Suture Needles

タイトルまたは説明

Suture Needle 

Suture: PGA; PGLA; PDO; Nylon; Catgut; Silk; Polyester; Polypropylene, Stainless steel wire 
Size: 8/0, 7/0, 6/0, 5/0, 4/0, 3/0, 2/0, 1/0, 0#, 1#, 2#, 3# 
Length: *5cm, , *0cm, *5cm, **0cm, **5cm, **0cm 
Needle: Straight, 1/2 circle, 1/2 circle (double), 1/4 circle, 1/4 circle (double) 
3/8 circle, 3/8 circle (double), 5/8 circle, loop round 
6mm, 8mm, *2mm, *8mm, *2mm, *0mm, *5mm, *0mm, *0mm 
Round bodied, round bodied (heavy), curved cutting, curved cutting(heavy) 
Reverse cutting, reverse cutting (heavy), tapercut, micro-point spatula curved 
Package: *2 PCS/box, *****0 box/carton 

Suture Characteristics 
Absorbable Sutures 
The absorbable surgical sutures are made from either "natural" or synthetic polymers. 
Natural 
Collagen: The collagen sutures are derived from the submucosal layer of ovine small intestine or the serosal layer bovine small intestine "gut. " This collagenous tissue is treated with an aldehyde solution, which cross-links and strengthens the suture and makes it more resistant to enzymatic degradation. Suture materials treated in this way are called plain gut. 
Surgical gut, plain: Tensile strength is maintained for ***0 days postimplantation (variable with individual patient characteristics), and absorption is complete within *0 days. This type of suture is used for (1) repairing rapidly healing tissues that require minimal support and (2) ligating superficial blood vessels. Surgical gut, fast-absorbing: This type of suture is indicated for epidermal use (required only for **7 d) and is not recommended for internal use. 
Surgical gut, chromic (treated with chromium salt): 
O Tensile strength is maintained for ****4 days. The absorption rate is slowed by chromium salt (*0 d). Tissue reaction is due to the noncollagenous material present in these sutures. Also, patient factors affect rates of absorption and make tensile strength somewhat unpredictable. 
O Salthouse and colleagues demonstrated that the mechanism by which gut reabsorbs is the result of sequential attacks by lysosomal enzymes. 3 Natural fiber absorbable sutures have several distinct disadvantages. First, these natural fiber absorbable sutures have a tendency to fray during knot construction. Second, there is considerably more variability in their retention of tensile strength than is found with the synthetic absorbable sutures. A search for a synthetic substitute for collagen sutures began in the ***0s. Soon, procedures were perfected for the synthesis of high molecular weight polyglycolic acid, which LED to the development of the polyglycolic acid sutures.