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36 Cards in this Set
- Front
- Back
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Categories of surgical needles |
✔ swaged/ eyeless ✔ eyed |
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This type of surgical needle is readily available, less traumatic on the tissue, always sharp and sterility is always guaranteed. |
Swaged needles |
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This type of surgical needle is reusable, less expensive but less efficient and more traumatic than swaged needles. |
Eyed needles |
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Parts of a surgical needle |
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Double-armed suture needle is used in ___. |
Cardiovascular surgery |
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TRUE OR FALSE. Too large a needle diameter results in increased tissue trauma |
True |
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TRUE OR FALSE. The needles that exceed a length-to-diameter ratio of 8:1 may tend to buckle or bend easily |
True |
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Common needle shapes |
◾ straight ◾ half curved ◾ parts of circle |
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Where do you use straight needles? |
Best used near body surfaces |
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Where do you use half-curved needles? |
Small wounds and wounds deep within the cavity |
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Types of needle point |
✔ noncutting (taper) ✔ cutting |
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These are round needles with no edges |
Noncutting (taper) needles |
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Where do you use noncutting needles? |
✔ viscera ✔ fat ✔ muscles |
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These needles are ground and honed to produce an edge that penetrates dense tissues |
Cutting needles |
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Types of cutting needles |
◾ conventional ◾ reverse ◾ tapered |
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The cutting edge of this needle is along the concave surface |
Conventional curved cutting needles |
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The cutting edge of this needle is along the convex surface |
Reverse curved cutting |
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Advantages of reverse cutting needle |
✔ minimize risk of cutting out the tissue ✔ increased needle strength |
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Type of cutting needle that combine a round shaft with a cutting point |
Tapered cutting needles |
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TRUE OR FALSE. Tapered cutting needles are used when both delicate and dense tissue are to be penetrated |
True |
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Requirements to be met when choosing suture needles |
✔ needle makes a hole large enough to introduce the suture material ✔ architecture of sutured tissue is not weak ✔ foreign bodies are not introduced into the wound ✔ material and design minimizes trauma/damage and breakage ✔ large enough and appropriate shape to permit precise, accurate and smootn suturing |
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Group of material that is used most extensively as tissue adhesives |
Cyanoacrylates |
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Uses of tissue adhesives |
✔ oral surgery ✔ intestinal anastomosis ✔ control of hemorrhage ✔ microvascular anastomosis ✔ cutaneous incision (MOST COMMON) ✔ skin grafts |
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Uses of surgical staplers |
✔ GI anastomosis ✔ skin apposition ✔ pulmonary resection ✔ cardiovascular resection ✔ hepatic resection |
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1st use of surgical stapling |
Gastric and duodenal transection |
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These are single, rectangular staplers that are placed while the slightly everted skin edges are he,d together by thumb forceps |
Skin staples |
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Advatages of surgical staplers |
✔Consistency of application ✔Security of hemostasis ✔Improved efficiency ✔Utility in areas of difficult accessibility |
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Primary precaution when using stapling instruments |
Amount of tissue to be stapled is not excessive |
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Advatages of ligating clips |
✔ ease of application ✔ high strength ✔ structural stability ✔ improved security |
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1st use of ligating clips |
Small silver clips used to control bleeding during brain tumor excision |
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Metallic clips are ade from: |
◾tantalum ◾stainless steel ◾titanium |
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Absorbable clips are made from: |
◾polyglactin 910 ◾ polydioxanone |
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Uses of ligating clips |
✔ neutering ✔ splenectomy ✔ mastectomy ✔ amputation ✔ tumor excision ✔ nephrectomy ✔ intestinal resectiom ✔ liver biopsy |
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Disadvantages of ligating clips |
✔ relative instability of clip applicator ✔ insecurity of clip ✔ permanence of metallic clips to tissue ✔ limited to vessels less than 11mm in diameter |
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Other needle point types |
✔ Blunt point needles ◾ can dissect through friable tissue without cutting ◾used for soft, parenchymal organs (eg. Spleen, liver) ✔ Tapercut needles ◾ combination of reverse cutting edge tip and taperpoint body ◾ used for suturing dense, tough fibrous tisse (eg. Tendon), and cardiovascular procedures (eg. Vascular grafts) |
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Characteristics of surgical needles |
◾Surgical yield- angular deformation a needle can withstand before becoming permanently deformed ◾Ductility- needle's resistance to breaking after a specified amount of bending ◾Sharpness- related to the angle of the point and the taper ratio of the needle |
