Tissue pad ultrasonic surgical instrument
First Claim
1. A tissue pad for use in an ultrasonic clamp coagulator, comprising a first tissue pad portion having a distal end and a proximal end, defining a length L, a first tissue engaging surface having a length corresponding to the length L and a cavity having an opening circumscribed by the first tissue engaging surface.
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Accused Products
Abstract
An ultrasonic clamp coagulator assembly that is configured to permit selective cutting, coagulation and clamping of tissue during surgical procedures. An elongated portion of the instrument can be configured for endoscopic applications and has an outside diameter of less than 6 mm. The construction includes a clamping mechanism, including a clamp arm pivotally mounted at the distal portion of the instrument, which is specifically configured to create a desired level of tissue clamping forces. The clamping mechanism includes a two-piece pad design and pad material that enables the higher tissue clamping forces and a force-limiting mechanism that effectively smoothes out abusive tissue forces.
255 Citations
34 Claims
- 1. A tissue pad for use in an ultrasonic clamp coagulator, comprising a first tissue pad portion having a distal end and a proximal end, defining a length L, a first tissue engaging surface having a length corresponding to the length L and a cavity having an opening circumscribed by the first tissue engaging surface.
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22. A tissue pad for use in an ultrasonic clamp coagulator, comprising:
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a) a first tissue pad portion having a first tissue engaging surface and a cavity having an opening circumscribed by the first tissue engaging surface; and b) a second tissue pad portion having a second tissue engaging surface and sized for mounting within the cavity. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. A tissue pad for use in an ultrasonic clamp coagulator, comprising:
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a) a first tissue pad portion made from a composition comprising PTFE, and having first and second ends, a rough tissue engaging surface disposed therebetween and a cavity having an opening circumscribed by the rough tissue engaging surface; and b) a second tissue pad portion sized for placement within the cavity and made from a composition comprising a polyimide and having a smooth tissue engaging surface. - View Dependent Claims (31, 32, 33, 34)
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Specification