Hand-held tools or implements used by health professionals for the performance of surgical tasks.
A tough, malleable, iron-based alloy containing up to, but no more than, two percent carbon and often other metals. It is used in medicine and dentistry in implants and instrumentation.
The destroying of all forms of life, especially microorganisms, by heat, chemical, or other means.
Time period from 1501 through 1600 of the common era.
The presence of an infectious agent on instruments, prostheses, or other inanimate articles.
The removal of contaminating material, such as radioactive materials, biological materials, or CHEMICAL WARFARE AGENTS, from a person or object.
Rendering pathogens harmless through the use of heat, antiseptics, antibacterial agents, etc.
Stainless steel. A steel containing Ni, Cr, or both. It does not tarnish on exposure and is used in corrosive environments. (Grant & Hack's Chemical Dictionary, 5th ed)
The prevention of access by infecting organisms to the locus of potential infection.
Time period from 1601 through 1700 of the common era.
Surgical procedures conducted with the aid of computers. This is most frequently used in orthopedic and laparoscopic surgery for implant placement and instrument guidance. Image-guided surgery interactively combines prior CT scans or MRI images with real-time video.
ENDOSCOPES for examining the abdominal and pelvic organs in the peritoneal cavity.
Methods of creating machines and devices.
A rare transmissible encephalopathy most prevalent between the ages of 50 and 70 years. Affected individuals may present with sleep disturbances, personality changes, ATAXIA; APHASIA, visual loss, weakness, muscle atrophy, MYOCLONUS, progressive dementia, and death within one year of disease onset. A familial form exhibiting autosomal dominant inheritance and a new variant CJD (potentially associated with ENCEPHALOPATHY, BOVINE SPONGIFORM) have been described. Pathological features include prominent cerebellar and cerebral cortical spongiform degeneration and the presence of PRIONS. (From N Engl J Med, 1998 Dec 31;339(27))
The performance of surgical procedures with the aid of a microscope.
Small proteinaceous infectious particles which resist inactivation by procedures that modify NUCLEIC ACIDS and contain an abnormal isoform of a cellular protein which is a major and necessary component. The abnormal (scrapie) isoform is PrPSc (PRPSC PROTEINS) and the cellular isoform PrPC (PRPC PROTEINS). The primary amino acid sequence of the two isoforms is identical. Human diseases caused by prions include CREUTZFELDT-JAKOB SYNDROME; GERSTMANN-STRAUSSLER SYNDROME; and INSOMNIA, FATAL FAMILIAL.
Procedures that avoid use of open, invasive surgery in favor of closed or local surgery. These generally involve use of laparoscopic devices and remote-control manipulation of instruments with indirect observation of the surgical field through an endoscope or similar device.
Hand-held tools or implements especially used by dental professionals for the performance of clinical tasks.
The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.
Assessment of psychological variables by the application of mathematical procedures.

Management of intracranial aneurysms by surgical and endovascular treatment--modalities and results from a series of 395 cases. (1/650)

The selective occlusion of saccular intracranial aneurysms may be achieved by two techniques: microsurgical clipping and endovascular coiling. Each of them have particular indications which need to be defined. From September 1992 to June 1996, 395 consecutive patients with small or large aneurysms were treated either by surgery (n = 102) or by endovascular coiling (n = 293). Coiling was chosen each time the shape of the aneurysm seemed to be appropriate for this treatment: narrow neck and ratio neck diameter by sac diameter less than one third. Satisfying results with complete or subtotal obliteration and no recanalization on the following controls at 1, 6, 12, and 36 months were obtained in 92% before retreatment and in 98.8% after retreatment. Unsatisfying results were observed after surgery in seven cases and in 25 cases after embolization. After retreatment, it remains three post-surgical and two post-endovascular cases. Good and excellent clinical outcome was noted in 90% for small aneurysms and in 86.5% for large ones. Mortality is of 4.8% in the overall series. In a series in which were applied both types of treatment, surgery in 25% and endovascular techniques in 75%, good results in terms of efficiency and clinical results were achieved. These results are as good as the best series in which surgery was the only choice. Therefore with appropriate selection, endovascular treatment is a good alternative for treatment of the majority of saccular aneurysms.  (+info)

Titanium aneurysm clips: mechanical characteristics and clinical trial. (2/650)

Titanium clip is well documented to reduce the artifact observed in computed tomography (CT) or magnetic resonance (MR) imaging and improve the quality of these images. There are, however, some demerits based on metallic characteristics including large spring portions, lack of long and fenestration clips, and difficulties to produce. We examined the mechanical characteristics of Sugita titanium aneurysm clips (product of 6 aluminium-4 vanadium-titanium) and investigate the safety in clinical use and the imaging quality compared with those of cobalt (Co) alloy clips. On mechanical test, Sugita titanium clips showed no significant difference in closing force compared with the conventional Co alloy clips. The closing force reduced about 10% after 100 times repeated opening in titanium clips in contrast with no remarkable changes in Co alloy clips. Sixty-four patients with ruptured or unruptured cerebral aneurysms (total number of 71 aneurysms) were treated with Sugita titanium clips through the microsurgical technique. None of the unfavorable outcome occurred in related to the titanium clips. Neither clip dislocation nor deformation was experienced in this series during the follow-up period. The clip artifacts seen in CT and MR image were markedly reduced, however, MR angiography had less quality to resolve anatomical structures due to an existence of vessel gap. These results indicate that in spite of some disadvantages, Sugita titanium clips allow safe and beneficial use routinely in aneurysm surgery insofar as the complete clipping is obtained.  (+info)

Treatment and results of partially thrombosed giant aneurysms. (3/650)

Partially thrombosed giant aneurysms are one of the most difficult diseases in the neurosurgical field. We have had 18 of these cases namely, three in vertebral artery, four in basilar artery, four in internal carotid artery, five in middle cerebral artery, and two in anterior communicating artery. Nine aneurysms were clipped, two aneurysms were removed with anastomosis, two cases were treated interventionally, and five cases were treated conservatively because of serpentine and fusiform types of aneurysms in internal carotid artery bifurcation. These conservatively treated patients died due to infarction. When surgery is selected in the thrombosed giant aneurysms, the approach is the most important to secure the neck. Three-dimensional computed tomography angiography was useful to plan the strategy for surgery. If the neck is big enough for placement of a clip, arterial reconstruction is the choice. The reconstruction must be done including an adequate size of the artery because of the thick wall. If the aneurysm neck is too small to reconstruct, aneurysmectomy with anastomosis is one of the choices.  (+info)

Technical points to improve surgical results in cases with basilar tip aneurysms. (4/650)

Surgical results in 82 cases with aneurysm (61 ruptured and 21 unruptured) of the bifurcation of the basilar artery were analyzed and the causes of unfavorable outcome and its measures were discussed. Operation was performed in grade I, II, III, or IV of the Hunt and Kosnik's classification for the patients with ruptured aneurysm. Both in ruptured and unruptured cases, patient's age was not considered. As it turned out, 10 elderly (70 years old or older) cases (8 ruptured and 2 unruptured) were included in this study. Unilateral pterional approach was adopted for all but one case, and temporary clip and/or division of the hypoplastic posterior communicating artery was actively used. Surgery was completed with clipping of the aneurysm in all but six cases and overall surgical result consists of 70% of favorable outcomes. The main causes of unfavorable outcome were surgical procedures and primary brain damage due to subarachnoid hemorrhage. And the factors influenced to increase surgical technical damage to the brain were the patient's age, size of the aneurysm, and/or height of the neck from biclinoids line. The outcome of the higher grade (grade III or IV) in elderly cases was miserable, whereas it was not different from anterior circulation aneurysms in younger cases. From the result we concluded that the surgical indication for elderly cases should be limited in cases with lower grade (grade I or II) without large and/or high-positioned aneurysm. To obtain further improvement of the surgical result in younger cases, additional surgical techniques have to be considered to avoid the injury of perforating arteries from P1 and to reduce the pressure of the brain retraction which are the most important hazards for aneurysm surgery in this area.  (+info)

Factors influencing surgical outcome of the basilar bifurcation aneurysms. (5/650)

To contribute to a better understanding of the clipping operation of the basilar bifurcation aneurysm, factors influencing the surgical outcome were analyzed in 80 patients. The age range of the patients was 34-74 years, with a mean age of 58.4 years, and there were 61 females and 19 males. Fifty-eight patients had been admitted because of subarachnoid hemorrhage and a basilar bifurcation aneurysm ruptured in 49 patients. The size of the aneurysms ranged between 2 and 19 mm with a mean of 7.9 +/- 3.9 mm. The height of the aneurysm neck was between -10 and 17 mm measured above a biclinoid line with a mean of 4.8 +/- 5.2 mm. Pterional approach was utilized in 72 patients and subtemporal in eight. Optic unroofing or removal of anterior clinoid process were performed in five patients, zygomatic osteotomy in 10, posterior clinoid removal in seven, and anterior petrosectomy in one. A bridging vein of the temporal lobe was divided in 16 patients. A short and/or hypoplastic posterior communicating artery was divided in 11 patients. Temporary occlusion of the basilar trunk was performed in 39 patients. Surgical outcome (Glasgow Outcome Scale) at 3 months after the operation was good recovery in 42 (53%), moderately disabled in 23 (29%), severely disabled in five (6%), vegetative survival in two (3%), and dead in eight (10%). The aneurysm size proved to be a single preoperative factor which significantly correlated with the surgical outcome (Spearman's rank correlation test, p < 0.0001). Division of the posterior communicating artery significantly contributed to the surgical outcome as an intraoperative factor (Mann-Whitney's U test, p = 0.01). The larger the aneurysm size was, the more often the posterior communicating artery was sectioned. Extreme care should be taken to obliterate a large aneurysm with a clip graft especially when division of the posterior communicating artery is required.  (+info)

Management of aneurysms of the vertebral artery-posterior inferior cerebellar artery complex. (6/650)

Aneurysms of the vertebral artery (VA) and posterior inferior cerebellar artery (PICA) account for only about 3% of all diagnosed intracranial aneurysms. The surgical therapy of these aneurysms is complex and difficult due to the close topographical relationship between the neurovascular structures. Here, we report upon 27 patients with 29 such aneurysms. Of these, 22 patients (81%) were hospitalized because of a subarachnoid hemorrhage. Sixteen of these patients (72%) had an additional intraventricular hemorrhage. Twenty-one patients (78%) were surgically treated for their aneurysms, three of them also for an associated arteriovenous malformation. Aneurysms of the VA and the proximal PICA were exposed via a transcondylar (n = 11) or lateral suboccipital (n = 3) approach, those originating from the distal PICA via a paramedian suboccipital (n = 7) route. Endovascular therapy was used in three patients. A patient with a fusiform aneurysm of the vertebrobasilar junction was treated with a ventriculoperitoneal shunt only. Three aneurysms with a complex morphology were not treated. Of the patients operated upon, two died postoperatively due to vasospasm. Two other patients developed an incomplete dorsolateral medullary syndrome. One individual was lost for follow-up. The median follow-up period was 4.6 years (range 3-86 months). Both, the overall mortality (2/27) and morbidity (2/27) were 7.5%, respectively. Our results show that even complex vascular lesions of the posterior fossa can be treated with a satisfactory long-term outcome in the majority of our patients (85%). The multimodal management and an individually tailored microsurgical approach are key issues for the treatment of such aneurysms.  (+info)

Experimental and clinical evaluation of the harmonic scalpel in thoracic surgery. (7/650)

The Harmonic Scalpel is an ultrasonic instrument for cutting and coagulating tissue. We are reporting our evaluation of the Harmonic Scalpel safety and efficacy in both experimental and clinical thoracic surgery. First, we confirmed the safety in thoracic surgery by following two preliminary studies using the Harmonic Scalpel. 1: Pulmonary parenchyma was incised using "Coagulating Shears" to evaluate hemostasis and air leakage. 2: Pulmonary hilar vessels were contacted directly with "Dissecting Hook" blade at optimum cutting power mode to evaluate potential vascular wall injury by the Harmonic Scalpel. Subsequently, the Harmonic Scalpel was used for a partial lung resection due to metastatic lung cancer. Particular application was for a chest wall incision, interlobar separation of the lung, and dissection of a pulmonary artery, in lung cancer operations. We concluded that cutting and hemostasis of pulmonary parenchyma could be achieved with minimal tissue damage using the Harmonic Scalpel. Compared to electric coagulation, the Harmonic Scalpel minimizes tissue charring and dissection, and eliminates thermal injury in thoracic surgery.  (+info)

High-pressure trocar insertion technique. (8/650)

BACKGROUND: The majority of laparoscopic complications occur at the time of Veress needle and trocar insertion. Although not very frequent, they increase the morbidity and mortality of both diagnostic and operative laparoscopic procedures. Alternative techniques of trocar insertion have been described but have not completely eliminated the risk of injury. TECHNIQUE: After Veress needle insertion and establishment of pneumoperitoneum to 25 to 30 mm Hg, insertion of a short trocar is performed in the deepest part of the umbilicus without elevation of the anterior abdominal wall. The result is a parietal peritoneal puncture directly beneath the umbilicus. The high-pressure setting used during initial insertion of the trocar is lowered as soon as safe abdominal entry is documented. EXPERIENCE: The trocar insertion technique described above was performed in 3041 procedures. No vascular injury occurred. There were two bowel perforations. No complications related to the increased intra-abdominal pressure were observed. CONCLUSION: The high-pressure abdominal entry technique has the advantage of reducing intra-abdominal trocar-related injuries without requiring additional instrumentation or additional training.  (+info)

Surgical instruments are specialized tools or devices that are used by medical professionals during surgical procedures to assist in various tasks such as cutting, dissecting, grasping, holding, retracting, clamping, and suturing body tissues. These instruments are designed to be safe, precise, and effective, with a variety of shapes, sizes, and materials used depending on the specific surgical application. Some common examples of surgical instruments include scalpels, forceps, scissors, hemostats, retractors, and needle holders. Proper sterilization and maintenance of these instruments are crucial to ensure patient safety and prevent infection.

I'm sorry for any confusion, but "steel" is not a medical term. It is a term used to describe an alloy made primarily of iron and carbon. If you have any medical questions or terms you would like defined, I'd be happy to help!

Sterilization, in a medical context, refers to the process of eliminating or removing all forms of microbial life, including fungi, bacteria, viruses, spores, and any other biological agents from a surface, object, or environment. This is typically achieved through various methods such as heat (using autoclaves), chemical processes, irradiation, or filtration.

In addition, sterilization can also refer to the surgical procedure that renders individuals unable to reproduce. This is often referred to as "permanent contraception" and can be performed through various methods such as vasectomy for men and tubal ligation for women. It's important to note that these procedures are typically permanent and not easily reversible.

I believe there might be a bit of confusion in your question. A "history" in medical terms usually refers to the detailed account of a patient's symptoms, illnesses, and treatments over time. It is a crucial part of the medical record and helps healthcare professionals understand the patient's health status and inform their care plans.

On the other hand, "16th century" refers to a specific period in history, spanning from 1501 to 1600 AD.

There isn't a direct medical definition for 'History, 16th Century.' However, if you are interested in learning about the medical advancements and practices during that time, I would be happy to provide some information. The 16th century was marked by significant developments in anatomy, surgery, and pharmacology, thanks to pioneers like Andreas Vesalius, Ambroise Paré, and William Shakespeare, who incorporated medical themes into his plays.

Equipment contamination in a medical context refers to the presence of harmful microorganisms, such as bacteria, viruses, or fungi, on the surfaces of medical equipment or devices. This can occur during use, storage, or transportation of the equipment and can lead to the transmission of infections to patients, healthcare workers, or other individuals who come into contact with the contaminated equipment.

Equipment contamination can occur through various routes, including contact with contaminated body fluids, airborne particles, or environmental surfaces. To prevent equipment contamination and the resulting infection transmission, it is essential to follow strict infection control practices, such as regular cleaning and disinfection of equipment, use of personal protective equipment (PPE), and proper handling and storage of medical devices.

Decontamination is the process of removing, inactivating or destroying harmful contaminants from a person, object, environment or substance. In a medical context, decontamination typically refers to the removal of pathogens, toxic chemicals, or radioactive substances from patients, equipment, or surfaces in order to prevent infection or illness.

There are different methods and techniques for decontamination depending on the type and extent of contamination. For example, mechanical cleaning (such as washing with soap and water), chemical disinfection (using antimicrobial agents), radiation sterilization (using ionizing radiation), and heat sterilization (using steam or dry heat) are some common methods used in medical settings to decontaminate surfaces, equipment, and supplies.

Decontamination is an important process in healthcare settings, such as hospitals and clinics, as well as in emergency response situations involving hazardous materials or bioterrorism incidents. Proper decontamination procedures can help prevent the spread of infectious diseases, reduce the risk of chemical or radiation exposure, and protect the health and safety of patients, healthcare workers, and the public.

Disinfection is the process of eliminating or reducing harmful microorganisms from inanimate objects and surfaces through the use of chemicals, heat, or other methods. The goal of disinfection is to reduce the number of pathogens to a level that is considered safe for human health. Disinfection is an important step in preventing the spread of infectious diseases in healthcare settings, food processing facilities, and other environments where there is a risk of infection transmission.

It's important to note that disinfection is not the same as sterilization, which is the complete elimination of all microorganisms, including spores. Disinfection is generally less effective than sterilization but is often sufficient for most non-critical surfaces and objects. The choice between disinfection and sterilization depends on the level of risk associated with the item or surface being treated and the intended use of that item or surface.

I'm sorry for any confusion, but "Stainless Steel" is not a medical term. It is a type of steel that contains at least 10.5% chromium content by mass, and usually contains nickel as well. The chromium forms a passive film that protects the metal from corrosion and staining. Stainless steel is widely used in various industries including medicine, for example, in medical equipment and surgical instruments due to its resistance to rust and corrosion.

Asepsis is a state or practice of being free from infection or contamination, especially by pathogenic microorganisms. It is a set of procedures and practices used in medicine and healthcare to prevent infection and the spread of disease-causing microorganisms. Aseptic techniques include the use of sterile equipment, barriers, and environmental controls to prevent the introduction of microorganisms into a susceptible host.

There are two types of asepsis: medical and surgical. Medical asepsis involves practices that reduce the number of microorganisms in the environment, such as hand hygiene, use of personal protective equipment (PPE), and cleaning and disinfection of surfaces and equipment. Surgical asepsis is a more stringent form of asepsis that aims to create a sterile field during surgical procedures, using sterilized instruments, drapes, gowns, gloves, and other materials to prevent the introduction of microorganisms into the surgical site.

Maintaining aseptic techniques is critical in healthcare settings to prevent the transmission of infectious agents and protect patients from harm. Failure to follow aseptic practices can result in healthcare-associated infections (HAIs), which can cause significant morbidity, mortality, and increased healthcare costs.

I believe there might be a bit of confusion in your question. A "history" in medical terms usually refers to the detailed account of a patient's symptoms, illnesses, and treatments received, which is used by healthcare professionals to understand their health status and provide appropriate care. It is not typically associated with a specific century like the 17th century.

If you are asking for information about the medical practices or significant developments in the field of medicine during the 17th century, I would be happy to provide some insight into that. The 17th century was a time of great advancement in medical knowledge and practice, with several key figures and events shaping the course of medical history.

Some notable developments in medicine during the 17th century include:

1. William Harvey's discovery of the circulation of blood (1628): English physician William Harvey published his groundbreaking work "De Motu Cordis" (On the Motion of the Heart and Blood), which described the circulatory system and the role of the heart in pumping blood throughout the body. This discovery fundamentally changed our understanding of human anatomy and physiology.
2. The development of the microscope (1600s): The invention of the microscope allowed scientists to observe structures that were previously invisible to the naked eye, such as cells, bacteria, and other microorganisms. This technology opened up new avenues of research in anatomy, physiology, and pathology, paving the way for modern medical science.
3. The establishment of the Royal Society (1660): The Royal Society, a prominent scientific organization in the UK, was founded during this century to promote scientific inquiry and share knowledge among its members. Many notable scientists and physicians, including Robert Hooke and Christopher Wren, were part of the society and contributed significantly to the advancement of medical science.
4. The Smallpox Vaccination (1796): Although this occurred near the end of the 18th century, the groundwork for Edward Jenner's smallpox vaccine was laid during the 17th century. Smallpox was a significant public health issue during this time, and Jenner's development of an effective vaccine marked a major milestone in the history of medicine and public health.
5. The work of Sylvius de le Boe (1614-1672): A Dutch physician and scientist, Sylvius de le Boe made significant contributions to our understanding of human anatomy and physiology. He was the first to describe the circulation of blood in the lungs and identified the role of the liver in metabolism.

These are just a few examples of the many advancements that took place during the 17th century, shaping the course of medical history and laying the foundation for modern medicine.

Computer-assisted surgery (CAS) refers to the use of computer systems and technologies to assist and enhance surgical procedures. These systems can include a variety of tools such as imaging software, robotic systems, and navigation devices that help surgeons plan, guide, and perform surgeries with greater precision and accuracy.

In CAS, preoperative images such as CT scans or MRI images are used to create a three-dimensional model of the surgical site. This model can be used to plan the surgery, identify potential challenges, and determine the optimal approach. During the surgery, the surgeon can use the computer system to navigate and guide instruments with real-time feedback, allowing for more precise movements and reduced risk of complications.

Robotic systems can also be used in CAS to perform minimally invasive procedures with smaller incisions and faster recovery times. The surgeon controls the robotic arms from a console, allowing for greater range of motion and accuracy than traditional hand-held instruments.

Overall, computer-assisted surgery provides a number of benefits over traditional surgical techniques, including improved precision, reduced risk of complications, and faster recovery times for patients.

A laparoscope is a type of medical instrument called an endoscope, which is used to examine the interior of a body cavity or organ. Specifically, a laparoscope is a long, thin tube with a high-intensity light and a high-resolution camera attached to it. This device allows surgeons to view the abdominal cavity through small incisions, without having to make large, invasive cuts.

During a laparoscopic procedure, the surgeon will insert the laparoscope through a small incision in the abdomen, typically near the navel. The camera sends images back to a monitor, giving the surgeon a clear view of the organs and tissues inside the body. This allows for more precise and less invasive surgical procedures, often resulting in faster recovery times and fewer complications compared to traditional open surgery.

Laparoscopes are commonly used in a variety of surgical procedures, including:

1. Gynecological surgeries (e.g., hysterectomies, ovarian cyst removals)
2. Gallbladder removal (cholecystectomy)
3. Gastrointestinal surgeries (e.g., removing benign or malignant tumors)
4. Hernia repairs
5. Bariatric surgeries for weight loss (e.g., gastric bypass, sleeve gastrectomy)

While laparoscopes provide numerous benefits over open surgery, they still require specialized training and expertise to use effectively and safely.

Equipment design, in the medical context, refers to the process of creating and developing medical equipment and devices, such as surgical instruments, diagnostic machines, or assistive technologies. This process involves several stages, including:

1. Identifying user needs and requirements
2. Concept development and brainstorming
3. Prototyping and testing
4. Design for manufacturing and assembly
5. Safety and regulatory compliance
6. Verification and validation
7. Training and support

The goal of equipment design is to create safe, effective, and efficient medical devices that meet the needs of healthcare providers and patients while complying with relevant regulations and standards. The design process typically involves a multidisciplinary team of engineers, clinicians, designers, and researchers who work together to develop innovative solutions that improve patient care and outcomes.

Creutzfeldt-Jakob syndrome (CJD) is a rare, degenerative, and fatal brain disorder. It is caused by an abnormal form of protein called prion that can cause normal proteins in the brain to fold into abnormal shapes and accumulate, leading to damage and death of brain cells.

The symptoms of CJD usually develop over a period of several months and include rapidly progressing dementia, memory loss, confusion, coordination problems, muscle stiffness, twitching, and shaking. Some people may also experience visual hallucinations, changes in personality, or depression.

There are three main types of CJD: sporadic, inherited, and acquired. Sporadic CJD is the most common form and accounts for about 85% of all cases. It occurs spontaneously with no known cause. Inherited CJD is caused by a genetic mutation that is passed down from parents to their children. Acquired CJD is caused by exposure to contaminated tissue or bodily fluids, such as through a medical procedure or eating contaminated beef (variant CJD).

There is no cure for Creutzfeldt-Jakob syndrome and it is fatal, usually within a year of onset of symptoms. Treatment focuses on managing the symptoms and making the patient as comfortable as possible.

Microsurgery is a surgical technique that requires the use of an operating microscope and fine instruments to perform precise surgical manipulations. It is commonly used in various fields such as ophthalmology, neurosurgery, orthopedic surgery, and plastic and reconstructive surgery. The magnification provided by the microscope allows surgeons to work on small structures like nerves, blood vessels, and tiny bones. Some of the most common procedures that fall under microsurgery include nerve repair, replantation of amputated parts, and various types of reconstructions such as free tissue transfer for cancer reconstruction or coverage of large wounds.

Prions are misfolded proteins that can induce other normal proteins to also adopt the misfolded shape, leading to the formation of aggregates. These abnormal prion protein aggregates are associated with a group of progressive neurodegenerative diseases known as transmissible spongiform encephalopathies (TSEs). Examples of TSEs include bovine spongiform encephalopathy (BSE or "mad cow disease") in cattle, variant Creutzfeldt-Jakob disease (vCJD) in humans, and scrapie in sheep. The misfolded prion proteins are resistant to degradation by proteases, which contributes to their accumulation and subsequent neuronal damage, ultimately resulting in spongiform degeneration of the brain and other neurological symptoms associated with TSEs.

Minimally invasive surgical procedures are a type of surgery that is performed with the assistance of specialized equipment and techniques to minimize trauma to the patient's body. This approach aims to reduce blood loss, pain, and recovery time as compared to traditional open surgeries. The most common minimally invasive surgical procedure is laparoscopy, which involves making small incisions (usually 0.5-1 cm) in the abdomen or chest and inserting a thin tube with a camera (laparoscope) to visualize the internal organs.

The surgeon then uses long, slender instruments inserted through separate incisions to perform the necessary surgical procedures, such as cutting, coagulation, or suturing. Other types of minimally invasive surgical procedures include arthroscopy (for joint surgery), thoracoscopy (for chest surgery), and hysteroscopy (for uterine surgery). The benefits of minimally invasive surgical procedures include reduced postoperative pain, shorter hospital stays, quicker return to normal activities, and improved cosmetic results. However, not all surgeries can be performed using minimally invasive techniques, and the suitability of a particular procedure depends on various factors, including the patient's overall health, the nature and extent of the surgical problem, and the surgeon's expertise.

Dental instruments are specialized tools that dentists, dental hygienists, and other oral healthcare professionals use to examine, clean, and treat teeth and gums. These instruments come in various shapes and sizes, and each one is designed for a specific purpose. Here are some common dental instruments and their functions:

1. Mouth mirror: A small, handheld mirror used to help the dentist see hard-to-reach areas of the mouth and reflect light onto the teeth and gums.
2. Explorer: A sharp, hooked instrument used to probe teeth and detect cavities, tartar, or other dental problems.
3. Sickle scaler: A curved, sharp-edged instrument used to remove calculus (tartar) from the tooth surface.
4. Periodontal probe: A blunt, calibrated instrument used to measure the depth of periodontal pockets and assess gum health.
5. Dental syringe: A device used to inject local anesthesia into the gums before dental procedures.
6. High-speed handpiece: Also known as a dental drill, it is used to remove decay, shape teeth, or prepare them for fillings and other restorations.
7. Low-speed handpiece: A slower, quieter drill used for various procedures, such as placing crowns or veneers.
8. Suction tip: A thin tube that removes saliva, water, and debris from the mouth during dental procedures.
9. Cotton rolls: Small squares of cotton used to isolate teeth, absorb fluids, and protect soft tissues during dental treatments.
10. Dental forceps: Specialized pliers used to remove teeth or hold them in place while restorations are being placed.
11. Elevators: Curved, wedge-shaped instruments used to loosen or lift teeth out of their sockets.
12. Rubber dam: A thin sheet of rubber or latex that isolates a specific tooth or area during dental treatment, keeping it dry and free from saliva and debris.

These are just a few examples of the many dental instruments used in modern dentistry. Each one plays an essential role in maintaining oral health and providing effective dental care.

Reproducibility of results in a medical context refers to the ability to obtain consistent and comparable findings when a particular experiment or study is repeated, either by the same researcher or by different researchers, following the same experimental protocol. It is an essential principle in scientific research that helps to ensure the validity and reliability of research findings.

In medical research, reproducibility of results is crucial for establishing the effectiveness and safety of new treatments, interventions, or diagnostic tools. It involves conducting well-designed studies with adequate sample sizes, appropriate statistical analyses, and transparent reporting of methods and findings to allow other researchers to replicate the study and confirm or refute the results.

The lack of reproducibility in medical research has become a significant concern in recent years, as several high-profile studies have failed to produce consistent findings when replicated by other researchers. This has led to increased scrutiny of research practices and a call for greater transparency, rigor, and standardization in the conduct and reporting of medical research.

Psychometrics is a branch of psychology that deals with the theory and technique of psychological measurement, such as the development and standardization of tests used to measure intelligence, aptitude, personality, attitudes, and other mental abilities or traits. It involves the construction and validation of measurement instruments, including the determination of their reliability and validity, and the application of statistical methods to analyze test data and interpret results. The ultimate goal of psychometrics is to provide accurate, objective, and meaningful measurements that can be used to understand individual differences and make informed decisions in educational, clinical, and organizational settings.

Instruments used in general surgery Medical instruments and implants "Surgical Instrument - an overview , ScienceDirect Topics ... Over time, many different kinds of surgical instruments and tools have been invented. Some surgical instruments are designed ... Classification of surgical instruments helps surgeons to understand the functions and purposes of the instruments. With the ... The expression surgical instrumentation is somewhat interchangeably used with surgical instruments, but its meaning in medical ...
The Retained Surgical Sponge." "General Instrument Sourcebook - KMedic" (PDF). Retrieved October 27, 2016. "Sterilized surgical ... Each surgical instrument has a bar code placed on it and nurses pass the items through a hand scanner. The bar code allows each ... A retained surgical instrument is any item inadvertently left behind in a patient's body in the course of surgery. There are ... 45-47 "Surgical Instruments Left in Patient's Body." Nursing Link. Gamble, Kate Huvane. "No Sponge Left Behind", Health Care ...
... surgical cutting tools, surgical instruments used in obstetrics and gynecology. There are dental instruments and an eye ... Surgical instruments used during the Gallipoli campaign (1915-1916) of World War I and the Turkish War of Independence (1919- ... Surgical Instruments and Health Museum (Turkish: Cerrahi Aletler ve Sağlık Müzesi) is a medical museum in Samsun, Turkey ... The museum owns a collection of over 15,000 historical surgical instruments and medical objects. The objects exhibited in the ...
... are scissors specially manufactured as surgical instruments, typically used for cutting sutures, dressings, ... "Commonly Used Surgical Instruments". facs.org. Retrieved 2022-02-23. Joanna Kotcher Fuller; Joanna Ruth Fuller (2012). Surgical ... Surgical scissors, Scissors, Surgical instruments, All stub articles, Medical equipment stubs). ... Surgical scissors are usually made of surgical steel. Some have tungsten carbide reinforcements along their cutting edges, the ...
Surgical Instrument. Jose Leandro Montalvo Guenard. Ponce, PR. U.S. Patent Office. Application Number 278,879. 13 June 1939. ... Montalvo Guenard invented an instrument that allowed eye surgeons to securely hold and readily manipulate the eye lens in ...
"Dissecting Scissors , Surgical Scissors , Surgical Instruments". Dissecting Scissors , Surgical Scissors , Surgical Instruments ... Autopsy instruments Autopsy instruments ( old set) dissection table Visible Proofs: Forensic Views forensic views the Body: ... Instruments used in Forensics, including autopsy dissections are as follows: Serological, chemical and genetic testings are ...
Materials and Instruments; Electrical Apparatus Manufacturers; Faro Materials; Ivory Goods; Locksmiths; Surgical Instruments; ... He also worked with cutler and surgical instrument maker Frederick Kesmodel at 817 Kearny Street before taking out his own ... Their product line expanded to surgical and dental instruments as well as barbers' cutlery. In 1870 Will & Finck opened a ... Will & Finck was a San Francisco company established in 1864 as cutlers, surgical instrument makers, locksmiths and bell ...
Circumcision surgical instruments should be distinguished from circumcision devices. Circumcision instruments are used at the ... The Gomco clamp is a surgical instrument used to perform circumcision in all age groups, but is mainly used in newborn ... The Gomco clamp, the Mogen clamp, and Unicirc are surgical instruments. Circumcision devices remain on the penis for 4 to 7 ... Circumcision surgical procedure in males involves either a conventional "cut and stitch" surgical procedure or use of a ...
"Brophy Tissue Forceps, Serrated, 1x2 Teeth, Straight 8" - Tissue Forceps - Forceps , Sklar Surgical Instruments". www.sklarcorp ...
"Doc Goodfellow's Surgical Instruments". Archived from the original on 2013-02-24. Retrieved March 5, 2013. Walter Noble Burns ( ... Sixteen doctors attended to Garfield and most probed the wound with their fingers or dirty instruments. Historians agree that ... Along with performing the first laparotomy, Goodfellow recorded several other surgical firsts, including performing the first ... instruments, sponges, and the area around the wound. He successfully repaired the miner's wounds and the miner, unlike the ...
... is a surgical instrument that allows surgeon to inspect areas around nerves, especially in the spine. Three main ... v t e (Surgical instruments, All stub articles, Medical equipment stubs). ... Younis, Zubair (28 October 2018). "Basic Surgical Orthopedic Instruments". Slideshare.net. Retrieved 4 August 2021. Duraisamy, ... there is also a specialized instrument, that is called malis nerve hook. ...
Surgical and dental instruments ; Wood-burning stoves, heat pumps, solar heaters and similar goods. Various excise taxes were ...
Instruments used in general surgery SAE International ASTM International Stainless Surgical Instruments. Boston Career ... Surgical cutting instruments are often made from 440 or 420 stainless due to its high hardness coupled with acceptable ... "ASTM F899 - Standard Specification for Wrought Stainless Steels for Surgical Instruments". ASTM. Retrieved 8 May 2019. (CS1 ... Surgical stainless steel is a grade of stainless steel used in biomedical applications. The most common "surgical steels" are ...
History of surgical instruments: 7. The first electrosurgical instruments: galvanic cauterization and electric cutting snare ... In September 1856 he demonstrated his galvano-surgical methods in Paris, of which, he was awarded the Montyon Prize by the ... In 1856 he became a full professor and director of the surgical-ophthalmologic clinic. During the Second Schleswig War (1864) ... He is best remembered for his pioneer work in galvanocautery, being credited with the standardization of its surgical ...
The Romans invented numerous surgical instruments, including the first instruments unique to women, as well as the surgical ... Susruta also described more than 125 surgical instruments in detail. Also remarkable is Sushruta's penchant for scientific ... ISBN 978-0-02-093400-4. "Surgical Instruments from Ancient Rome". Healthsystem.virginia.edu. Archived from the original on 2008 ... Some of the surgical cures listed, such as the opening of an abdominal abscess or the removal of traumatic foreign material, ...
"Surgical Instruments from Ancient Rome". University of Virginia Claude Moore Health Services Library. 2007. Retrieved 16 ... Examples of Class I devices include elastic bandages, examination gloves, and hand-held surgical instruments. Class II devices ... Melkerson MN (May 2, 2018). "Stereotaxic Instrument" (PDF). U.S. Food and Drug Administration. Surgical Robotics: Systems ... Medical devices such as pacemakers, insulin pumps, operating room monitors, defibrillators, and surgical instruments, including ...
"Surgical Instruments from Ancient Rome". Archived from the original on 2009-09-18. Retrieved 2008-11-07. Babylonian Talmud ( ... "Ancient Greek and Greco-Roman Methods in Modern Surgical Treatment of Cancer". Annals of Surgical Oncology. 17 (3): 665-7. doi: ... In the Muslim world, scholars Al-Zahrawi and Avicenna wrote about techniques and instruments used for cauterization. As late as ... Concern has also been raised regarding toxicity of the surgical smoke electrocautery produces. This contains chemicals that, ...
... primarily surgical. Pakistan is one of the largest manufacturers and exporters of surgical instruments. Pakistan's largest ... "World's Leading Surgical Instruments Producers". TradeFord. Khan, Mubarak Zeb (22 August 2016). "Pakistan's shadow surgical ... Surgical & Medical Instruments Industry of Pakistan (PDF) (Report). TDAP. Archived from the original (PDF) on 5 August 2020. ... The Sectoral Analysis of Surgical Instruments of Pakistan (PDF) (Report). PITAD. Retrieved 25 May 2019. Aaliya Ahmed (1 ...
... History Kirkup, John (2006). The Evolution of Surgical Instruments. Historyofscience.com. ISBN 0930405862. ... Surgical instrument manufacturers, Manufacturing companies established in 1932, British brands, 1932 establishments in England) ... Swann-Morton Ltd is a British manufacturer of scalpel handles, blades and other surgical equipment based in Sheffield, England ...
"Pakistan's shadow surgical instruments' sector". Mubarak Zeb Khan. Dawn News. Embassy of Mexico in Tehran, Iran Embassy of ... Pakistan's main exports to Mexico include: textiles, long grain rice, cotton and surgical instruments. Pakistan is Mexico's ...
Kirkup JR (2006). The Evolution of Surgical Instruments. Novato, California: Norman Publishing. pp. 419-37. ISBN 978-0-930405- ... They ranged from simple needles to multi-pointed and multi-bladed spring-operated instruments specifically designed for the ... with a wide variety of instruments used to achieve this. ...
... they are regarded as surgical instruments. It was stated that they might be the oldest surgical tools in the world. However, ... They are not surgical instruments. They are model tools. They, his mummy and the rest of the findings are in the Imhotep Museum ...
... bloody gynaecological and surgical instruments; references to IVF; spiders crawling across bellies and faces; snakes writhing; ...
Instruments used in general surgery CJS Thompson: Guide to the Surgical Instruments and Objects in the Historical Series with ... Controversy exists among collectors of antique surgical instruments that these types of fleams were made with the lancet so ... Kirkup, John R (2006). The Evolution of Surgical Instruments. Novato, CA: Norman Publishing. ISBN 0930405862.[page needed] ... These instruments are the progression from the early use of fish teeth, sharpened stones, and thorns used to penetrate blood ...
But surgical instruments, no way!" Both sides were intractable, and the venture died. One morning Ardeshir read an article in a ... Ardeshir described his plan to manufacture surgical equipment and asked for a loan. When Cama asked why Ardeshir did not ...
The variety and nature of the surgical instruments discovered in Roman remains indicate a good knowledge of surgery. Roman ... ISBN 978-1-4034-0520-3. "Surgical Instruments from Ancient Rome". University of Virginia Claude Moore Health Services Library. ... physicians used a variety of surgical procedures for dissection that were carried out using many different instruments ... Assistants with surgical hooks were used to stitch up large abdominal wounds. They were used to help separate the margins of ...
Milne, John (1907). Surgical Instruments in Greek and Roman times. Oxford: At the Clarendon Press. ISBN 978-859-100-771-4. ... Surgical Instruments from Ancient Rome (CS1 maint: multiple names: authors list, CS1 errors: missing periodical, CS1 Spanish- ... The rectal speculum also called the catopter was a dual-bladed surgical instrument in ancient Rome. Feminine specula were used ... When surgery was used, it involved the use of surgical instruments to penetrate the mother. Usually this procedure ended the ...
Specialized surgical instrument called a radiofrequency handpiece is used. It has 4 needles which enter the IAS and heat up to ... A combination of different surgical and non-surgical therapies may be optimal. A surgical treatment algorithm has been proposed ... There are many surgical options described for FI, and they can be considered in 4 general groups. Restoration and improvement ... Diversion may be a temporary measure in the management of FI, e.g. to allow healing of another surgical procedure, or it may be ...
Medical devices (syringes, surgical instruments, etc.) Implantable & in body medical items (catheter tubes, contact lenses, etc ...

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