A miniature suture tensiometer for laparoscopic applications.

The tension applied to sutures can affect their performance. In laparoscopic procedures, the ability to tension sutures may be compromised by the confined space. The ability to accurately judge tension may also be compromised by lever arms of long instruments and interaction between the instrument and trocar. A miniature suture tensiometer that can be used in open and laparoscopic settings has been developed that demonstrates a maximum error of 0.05 lb over a 2-lb range. This device has been used in laparoscopic surgery to measure suture tension. The suture tension information gathered has been used in the development of a device that reliably delivers a secure knot in a laparoscopic setting.