It should be noted that successful attaching is the result of several factors, some of which are:
1. Matching the suture diameter to the proper hole size.
2. Selecting needle diameters large enough for the wall thickness around the suture to withstand the necessary closure.
3. Selecting the proper attaching dies to match the wire size and correct amount of closure.
4. Frequent inspection of the attaching dies to insure they are not chipped, cracked, or worn out.
5. Proper adjustment of the attaching equipment to prevent over-closing of the hole.
6. Number of closures made with the attaching dies.
7. The amount that a suture material can be compressed.
8. Suture diameter variation or out-of-roundness.
A problem with any one, or combination, of these factors can cause the needle barrels to fail (fracture or crack) during the attaching process and/or result in premature suture pullout at higher levels than the normal attaching losses. DCE representatives would be happy to assist you, on a consulting basis, in identifying the proper hole and suture attaching equipment parameters to achieve successful attaching of your suture application.
Needle Hole Description:
Tapped holes have threads inside and may be used when attaching Gut or other monofilament sutures.
The threads grip the suture providing greater pull strength.
Smooth holes are generally used with multifilament braid sutures. This hole compresses the suture without
cutting the outer strands. Smooth holes may also be used with monofilament sutures.