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Surgical Instruments

  1. How to Choose a Scalpel Blade for Your Application
    March 05, 2021
    WPI’s disposable scalpels come in many styles and are ideal for students, researchers, and crafters. Here we will describe some of the uses for these popular blades.     Scalpel blades come in a variety of shapes so that you can choose the ones best suited to your application.   The #10 blade is a commonly used blade for surgical applications. It is used for making large incisions through skin and subcutaneous tissues. It is similar to the #20 blade, which is somewhat larger. The #20 blade is used for larger incisions through thicker tissues or for dissection of the soft tissues in larger animals.   Blades #
  2. Disposable Scalpels – Perfect for Researchers, Students and Crafters
    March 05, 2021
    WPI’s disposable scalpels come in eight different styles and can be used for a wide variety of applications. Here you can see what makes WPI inexpensive, disposable scalpels such a popular tool.     Disposable scalpels are perfect for one-time surgical uses, dissections, woodworking, taxidermy, clay modeling and more. They are ideal for students, researchers, and crafters. WPI disposable scalpels have surgical stainless-steel blades installed on plastic handles. The plastic handle of the scalpel is textured to ensure a firm grip, and it is lightweight for comfortable use. The handle includes a handy, integrated 6 cm metric ruler etched on it. They come sterile and individually wrapped, with 10 blades in e
  3. Benefits of Black Coated Instruments
    September 06, 2019
    Benefits of black coated surgical instruments Black coated surgical instruments are not only visually more attractive than the stainless-steel ones, there are several other benefits as provided below: -        Non reflective surface reduces eye-fatigue   -        Has prolonged life -        Up to 10 times harder than stainless steel -        60% lower wear rate than stainless steel -        Corrosion resistant due to oxidized aluminum coating -        Anti-allergic due to the absence of Chromium and Nickel coating  -        Easy to clean Making of the black coating instruments The black coatings are created by applying a layer of Titanium Aluminum Nitrate (TiAIN) to the instrument, using an environmentally friendly Physical Vapor Deposition (PVD) process. In this process Titanium and Aluminum are magnetron-sputtered onto the substrate in a va
  4. Non-Reflective Instruments Minimize Glare when Working under Lights
    August 09, 2019
    Whether you are working with your surgical instruments under bright lights or using a microscope, non-reflective black surgical instruments offer a distinct advantage. The titanium coating not only hardens and protects the cutting edge, but it also minimizes reflection from the surface of your instruments while you are working. They are corrosion resistant and biocompatible.  See Selection
  5. How to Clean Surgical Instruments Using an Ultrasonic Cleaner
    March 13, 2019
    Prior to sterilizing surgical instruments, it is a good idea to make sure you have cleaned them to remove blood, tissue and all other organic material.  If soiled materials dries or is baked onto the instruments, it will interfere with microbial inaction and can compromise the sterilization process. Cleaning is the removal of foreign material (e.g., soil and organic material) from objects and is normally accomplished using water with detergents or enzymatic products. The most common type of mechanical automatic cleaner is the ultrasonic cleaner. Ultrasonic cleaners are used in conjunction with detergents and enzymatic cleaners.  Ultrasonic cleaning removes particulates by cavitation (bubbles) and implosion. Waves o
  6. Get a Clean Consistent Cut Every Time with Biopsy Punches
    August 22, 2018
    Clean, Consistent Cut Every Time When you need to quickly take minimally invasive, small samples, the biopsy punch is an easy choice. The biopsy punch is a hand held, pencil-shaped instrument with a slender, pencil-like body. It is lightweight with a hollow, circular, stainless steel, cutting tip. In 1887 Edward Lawrence Keyes, the first president of the American Association of Genitourinary Surgeons, was the first doctor who documented the importance of using the biopsy punch for dermatological diagnostics. He observed that the skin tissue samples can be obtained without complications, minimal bleeding and no need for suturing. Uses for Biopsy Punches Punches are not solely used in dermatology. Biopsy punches are also designed for therapeutics, cosmetic
  7. How Do I Select Appropriate Surgical Instruments for My Application?
    March 13, 2018
    When you are selecting surgical instruments for a procedure, here are a few key points to consider What procedure are you performing? Published research papers usually indicate which instruments other researchers have used for similar procedures. The correct surgical instrument for a particular procedure makes a difference on the outcome of that technique. What is the size of your subject? An instrument that is perfect for a 200­–300 g rat (about 22–25 cm long) may not be the best choice for a neo-natal mouse of about 15 g (about 1–2.5 cm long). How often will the instrument be used? If you perform more than 100 cuts per day, a pair of titanium scissors or a pair of scissors with tungsten carbide inserts would be worth considering. They stay sharp longer. In this article we will consider some of these factors and offer a few tips for selecting an appropriate pair of scissors, tweezers and forceps. Types of Surgical Instruments Most of our surgical instruments can be used for general surgery in a research laboratory setting. Instruments may be roughly categorized by function: Cutting instruments include scissors, surgical blades, knives and scalpels. Grasping or holding instruments include hemostatic forceps and tissue forceps. Retractors, which hold incisions open or hold an organ (or tissue) out of the way, include Gelpi, Weitlaner and US Army style instruments. In addition to surgical instruments, we have many accessories available, which include all the extras needed for surgery. These include clamps, from large towel clamps to delicate vessel clips and bulldog clamps, drills, sutures, binocular loupes, biopsy punches and more. Cutting Instruments 14003-G Vannas ScissorsScissors are cutting instrument with two blades joined together at a pivot point so that the sharp edges glide against each other to shear material that is between the blades. Here are some tips to keep in mind when selecting an appropriate pair of surgical scissors: Fine tip scissors (like Vannas, Castroviejos and McPhersons) are ideal for use in very restricted spaces. They are perfect for right or left hand use, and are designed for ophthalmological procedures, which require a delicate incision of tissue. You can make quick, accurate cuts with minimal tissue damage using these sharp blades. Curve tipped scissors are a good choice when you want to avoid cutting underlying tissues. Scissors designed with a heavier construction (like Metzenbaum, Mayo and SuperCut scissors) are useful for cutting fur, thicker tissue or vessels. 501745 Metzenbaum ScissorsThe length of the scissor tips should match the depth of the incision you need to make.  Scissors made with a heavier construction can be used to cut fur, thicker tissue, bones and muscle. 503261 Iris SuperCut ScissorsOur black handled surgical scissors designate our SuperCut scissors. These scissors have one on razor sharp blade and one micro-serrate blade. The sharp edge gives a clean cut with minimal tissue damage, and the serrated edge actually holds the tissue to prevent it from slipping while you are making an incision. Scissors with tungsten carbide inserts have golden handles. Tungsten carbide instruments are more durable, hold an edge longer and last longer than stainless steel instrument. Scissors with on black handle and one gold handle are both serrated and have tungsten carbide blade inserts, giving you the very best of both worlds. Spring scissors are perfect for left or right hand use. They are designed for neurosurgical, vascular, microsurgical and ophthalmological uses. 504075 Sapphire BladeSapphire blades may be used in microsurgery, dissection and related applications. They are not as hard as a diamond, but still hundreds of times harder then a razor blade. Sapphire blades can cuts with minimum pressure, without tearing or damaging the specimen. The blades are corrosion free and resistant to saline solution. They offer a super sharp cutting edge, and they work with stainless steel or titanium handles. These blades may be autoclaved up to 200ºC. Some common types of scissors include: Vannas scissors are delicate spring scissors, which are perfect for right or left hand use. They are used frequently in ophthalmic and neurosurgical applications. The fine scissor blades are sharp. Vannas scissors work well under a dissection microscope. Castroviejo scissors were designed for ophthalmologic procedures, which require a delicate incision of tissue. You can make quick, accurate cuts with minimal tissue damage using these sharp blades. McPherson-Vannas scissors were originally designed for ophthalmologic work requiring fine delicate blades for such intricate work. Vannas Scissors Castroviejo Scissors McPherson-Vannas Scissors Grasping Instruments Surgical forceps may be broadly divided into two categories, ring forceps (also called hemostats, hemostatic forceps and locking forceps) and thumb forceps (frequently called tweezers or pinning forceps). Here are some tips to keep in mind when selecting an appropriate pair of forceps: Reverse forceps are self-closing. You squeeze them to open them. They provide uniform tension. Ceramic tipped forceps are non-porous, corrosion and heat resistant and insulated. Straight tips on forceps are used for general precision work, and slightly curved or fully curved tips provide more visibility Reverse Forceps Ceramic Tipped Forceps   15921 Halsted Mosquito ForcepsRing forceps, also called hemostats or locking forceps, are an instrument for grasping, holding firmly or exerting traction upon objects especially for delicate operations. They are hinged and look like ring scissors. Frequently, hemostatic forceps have a locking mechanism called a ratchet, which is used for clamping. The jaws of the locking forceps gradually come together as each increment of the ratchet is employed. Locking hemostatic forceps may be called clamps and are used to securely hold tissue. When they are used to control blood flow, they are called hemostats. Hemostats are typically used to compress blood vessels or other tubular structures to obstruct the flow of blood or fluids. Common types of ring forceps include: Kelly hemostats can be used to clamp larger vessels or grasp tissue. Kelly hemostats and Rochester forceps look similar. However, Kelly hemostats have shorter serrations. Rochester hemostats can reach a little deeper. Kelly-Rankin Hemostats Rochester-Oschner Hemostats Hartman Mosquito forceps have fine, short tips and a serrated jaw. Hartman Mosquito hemostats are used as hemostats for clamping small blood vessels and in fine tissue dissection when the incision is shallow. Use them to clamp small blood vessels or hold fine sutures. For a lighter and longer hemostat, try the Halstead Mosquito Forceps. Hartman Mosquito Forceps Halstead Mosquito Forceps Allis tissue forceps have sharp teeth for gripping heavy tissue. Because they can cause damage, they typically hold tissue that is to be removed. Crile hemostats are similar to Halsted Mosquito forceps, but they are a little larger. Rochester-Oschner forceps are heavy hemostats designed for clamping large vessels or grasping dense tissue. They are serrated for grasping and often have teeth at the tip, too. Stars and stripes tips of Rochester-Carmalt forcepsRochester-Carmalt forceps, nicknamed the "stars and stripes hemostat," are characterized by the longitudinal serrations that run the length of the blade with cross-hatching at the tip. These large, crushing hemostatic forceps are a choice instrument for clamping blood vessels and large tissues or ligating pedicles. Rochester-Pean hemostatic forceps are designed with full horizontal serrations for clamping larger tissue and vessels.  Rochester-Oschner Forceps  Rochester-Carmalt Forceps Rochester-Pean Thumb forceps are spring forceps used by compression between your thumb and forefinger and are used for grasping, holding or manipulating body tissue. They have no ratchet in the handle. Two broad categories of thumb forceps are dressing forceps and tissue forceps. Dressing forceps are used when dressing wounds and removing dressings. Very fine dressing forceps are also used in eye surgery. Tissue forceps generally have teeth, which offer a better grip on tissues while minimizing tissue damage. Common types of thumb forceps include: Adson tissue forceps are designed for grasping delicate tissues, and they have 1x2 teeth. Bonn tissue forceps are designed for delicate work, and they include a tying platform to assist when you are tying sutures.  Adson Tissue Forceps Bonn Tissue Forceps  Foerster tissue forceps work well when handling delicate tissue. These serrated forceps have the unique octagonal keyhole in the handle, giving your tactical feedback and control. The keyhole also gives you a better grip, especially when you are wearing gloves. When you need a firm grip and minimal tissue trauma, the Foerster forceps are an excellent choice. Iris forceps are designed for use in ophthalmologic work. The Iris dressing forceps are serrated and the Iris tissue forceps have 1x2 teeth. Graefe forceps have a horizontal row of 6 (or 8) small teeth for grasping tissue. They are most commonly use in ophthalmologic applications.   Iris Dressing Forceps
  8. Surgical Instrument Care and Handling
    June 19, 2015
    The proper care and handling of your valuable surgical instruments will improve their longevity and function. Choose a protocol appropriate for your environment from the cleaning techniques below. See the videos here. RINSING Immediately after use, rinse instruments under warm or cool running water to remove all blood, body fluids and tissue. Dried soils may damage the instrument surface and make cleaning very difficult. Do not use hot water as this will coagulate proteinous substances. CLEANING TECHNIQUES Time, temperature, and agitation play important roles in the cleaning process. Time — the efficiency of cleaning chemicals is often time dependant Temperature — higher temperature cleaning solutions result in better cleaning Agitation — whethe
  9. Caring for your Surgical Instrument Investment
    October 17, 2014
    What's the difference between cleaning, disinfecting and sterilizing? Let's take a look. This is the first in a series of four videos to discuss some best practices in caring for your surgical instrument investment.   In video #2, you can see how to manually clean surgical instruments. It is loaded with tips. This video is the second in a series of four to discuss some best practices in caring for your surgical instrument investment.    In video #3, you can see how to mechanically clean surgical instruments using an ultrasonic cleaner. This video is loaded with tips. This video is the third in a series of four to discuss some best practices in
  10. WPI Instruments featured in JoVE Video on Cross-Pollination
    October 03, 2013
    WPI surgical instruments were recently featured in a JoVE video that demonstrates a new method for cross pollinating grasses.   More Info Jiang, H., Barbier, H., Brutnell, T. Methods for Performing Crosses in Setaria viridis, a New Model System for the Grasses. J. Vis. Exp. (80), e50527, doi:10.3791/50527 (2013).
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