Needles & Sutures Surgical Unit 3 Mukhdoom BaharAli Roll No. 101.
Surgical Needles
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Transcript of Surgical Needles
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Surgical Needles
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Contents
1) Anatomy of A Surgical Needle2) Ideal Characteristics Of A Needle3) Shapes/Angle of Curvature4) Points5) Guidelines For Selection.6) Suturing Technique
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Anatomy of a Surgical Needle
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IDEAL CHARACTERISTICS OF A NEEDLE
• Made of high quality stainless steel as thin as possible without compromising strength.
• Stable in the grasp of a needle holder.• Able to carry suture material through tissue – minimal
trauma.• Sharp enough to penetrate tissue with minimal resistance.• Rigid to resist bending• Ductile to resist breaking during surgery.• Sterile and corrosion resistant – no micro organism, no foreign
materials.
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Needle Shapes
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Needle Points1. Cutting points : the cutting edge is on the concave surface. It is
used when tissue is difficult to penetrate such as skin and tendon
2. Reverse cutting: the cutting edge is on the convex surface and is ideal for skin, tendon sheath, or oral mucosa. Reverse cutting needles have more strength than conventional, and a reduced risk of cutting through tissue.
3. Taper point : used in soft tissue such as intestine and peritoneum, the sharp point is at the tip of needle
4. Blunt point : used for suturing friable tissue such as liver and kidney
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Conventional vs Reverse Cutting
Cutting edge on inside of circle
Skin Traumatic
Cutting edge on outside of circle
Skin Less traumatic than
cutting
Conventional Cutting Reverse Cutting
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Blunt vs Lancet
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Taper point vs Trocar point
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General Guidelines for Selection of Needle
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References
• Bailey & Love’s Short Practice of Surgery• http://midlevelu.com/blog/suturing-101-
needles-sizes-and-materials