5 Categories Of Medical Instruments Used In General Surgery
Generally, instruments can be divided into 5 categories according to their functions.
1. Cutting and dissecting instrument
These instruments usually have sharp edges or tips to cut through skin, tissue and suture material. Surgeons need to cut and dissect tissue to explore irregular growths and to remove dangerous or damaged tissue. These instruments have single or double razor-sharp edges or blades.
Scalpels, scissors and saws, which are the most traditional use.
Other examples include Elevators which can be both for cutting and lifting/retracting. Although diathermy/cautery are often used as more modern alternatives.
2. Grasping or holding instruments
Grasping and holding instruments are used to hold tissue, drapes or sponges.
Forceps and clamps. Forceps can be divided into two which are traumatic forceps (tissue crushing) and atraumatic forceps (tissue preserving, such as Debakey’s)
3. Hemostatic instruments
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. This includes instruments utilized for the cessation of bleeding.
Halsted Mosquito forceps.
Mixter “right angle” forceps.
Spencer Wells artery forceps.
Surgery is often considered to be about exposure. A multitude of retractors exist to aid in exposing the bodies cavities accessed during surgery.
The two basic types of retractors are the hand-held and the self-retaining forms.
The hand-held retractors allow an assistant to move tissue out of the way of the surgical instruments and protect the vital structures during the procedure.
Examples of hand-held retractors are:
Self-retaining retractors remain open unless closed. These have screws, ratchets or clamps which holds the retractor open. Self-retaining retractors allow hands-free operation during a procedure.
5. Tissue unifying instruments and materials
This is another category of surgical instruments that include tissue unifying instruments and materials such as needle holders, surgical needles, staplers, clips, adhesive tapes.
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