Ultrasonic surgical shears and tissue pad for same

• US 20050192610A1
• Filed: 02/24/2005
• Published: 09/01/2005
• Est. Priority Date: 02/27/2004
• Status: Abandoned Application

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Cilag Gmbh International (Johnson & Johnson)
• Inventors: Houser, Kevin L., Vaitekunas, Jeffrey J., Faller, Craig N., Noschang, Sarah A., Neuenfeldt, Steven
• Application Number:
  US11/065,378
• Publication Number:
  US 20050192610A1
• Time in Patent Office: Days
• US Class Current: 606/169
• CPC Class Codes: A61B 17/320092 with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
• CPC Class Codes: A61B 2017/00831 Material properties
• CPC Class Codes: A61B 2017/2825 Inserts of different material in jaws
• CPC Class Codes: A61B 2017/320094 additional movable means performing clamping operation
• CPC Class Codes: A61B 2017/320095 with sealing or cauterizing means

Abstract

An ultrasonic-surgical-shears tissue pad has a tissue-pad body including a base material and at least one filler material. An alternate ultrasonic-surgical-shears tissue pad has a tissue-pad body having adjoining first and second regions, wherein the first region includes a first material and wherein the second region includes a second material. An ultrasonic surgical shears includes an ultrasonic surgical blade and a clamping arm which is operable to open and close toward the blade and which has a transversely and resiliently flexible distal tip. An alternate ultrasonic surgical shears includes an ultrasonic surgical blade, a clamping arm operable to open and close toward the blade, and a tissue pad attached to the clamping arm and having a clamping surface, wherein at least a portion of the tissue pad is resiliently flexible in a direction substantially perpendicular to the clamping surface.

Claims

8. An ultrasonic-surgical-shears tissue pad comprising:

an ultrasonic-surgical-shears tissue pad body having adjoining first and second regions, wherein the first region includes a first material and wherein the second region includes a second material which is a different material from the first material.

9. The ultrasonic-surgical-shears tissue pad of claim 8, wherein the first region consists essentially of the first material and wherein the second region consists essentially of the second material.

10. The ultrasonic-surgical-shears tissue pad of claim 8, wherein the first material has at least one property which has a different value from that of the second material, and wherein the at-least-one property is chosen from the group consisting of:

hardness, stiffness, lubricity, dynamic coefficient of friction, heat transfer coefficient, abradability, heat deflection temperature, and melt temperature.

11. The ultrasonic-surgical-shears tissue pad of claim 8, wherein the first material has a heat deflection temperature greater than 500 degrees Farenheight.

12. The ultrasonic-surgical-shears tissue pad of claim 8, wherein the first material has a melt temperature greater than 700 degrees Farenheight.

13. The ultrasonic-surgical-shears tissue pad of claim 8, wherein the first material has a dynamic coefficient of friction less than 0.3 at pressure-velocity values greater than 30,000 pounds per foot-second.

14. The ultrasonic-surgical-shears tissue pad of claim 8, wherein the first material consists essentially of a thermoset plastic material.

15. The ultrasonic-surgical-shears tissue pad of claim 14, wherein the base material consists essentially of a polyimide material.

16. The ultrasonic-surgical-shears tissue pad of claim 8, wherein the first region includes a base material and at least one filler material, and wherein the base material is the first material.

17. An ultrasonic surgical shears comprising:

a) an ultrasonic surgical blade; and

b) a clamping arm operable to open and close toward the blade and having a transversely and resiliently flexible distal tip.

1. An ultrasonic-surgical-shears tissue pad comprising:

an ultrasonic-surgical-shears tissue pad body including a base material and at least one filler material which is a different material from the base material.

2. The ultrasonic-surgical-shears tissue pad of claim 1, wherein the at-least-one filler material has at least one property which has a different value from that of the at-least-one property of the base material, and wherein the at-least-one property is chosen from the group consisting of:

hardness, stiffness, lubricity, dynamic coefficient of friction, heat transfer coefficient, abradability, heat deflection temperature, and melt temperature.

3. The ultrasonic-surgical-shears tissue pad of claim 1, wherein the base material has a heat deflection temperature greater than 500 degrees Farenheight.

4. The ultrasonic-surgical-shears tissue pad of claim 1, wherein the base material has a melt temperature greater than 700 degrees Farenheight.

5. The ultrasonic-surgical-shears tissue pad of claim 1, wherein the base material has a dynamic coefficient of friction less than 0.3 at pressure-velocity values greater than 30,000 pounds per foot-second.

6. The ultrasonic-surgical-shears tissue pad of claim 1, wherein the base material consists essentially of a thermoset plastic material.

7. The ultrasonic-surgical-shears tissue pad of claim 6, wherein the base material consists essentially of a polyimide material.

18. The ultrasonic surgical shears of claim 17, also including:

c) a tissue pad attached to the clamping arm and having a clamping surface, wherein at least a portion of the tissue pad is resiliently flexible in a direction substantially perpendicular to the clamping surface.

19. The ultrasonic surgical shears of claim 17, wherein the tissue pad comprises a tissue pad body having adjoining first and second regions, wherein the first region includes a first material and wherein the second region includes a second material which is a different material from the first material.

18-1. The ultrasonic surgical shears of claim 17, wherein the tissue pad comprises a tissue pad body including a base material and at least one filler material, wherein the at-least-one filler material has at least one property which has a different value from that of the at-least-one property of the base material, and wherein the at-least-one property is chosen from the group consisting of:

hardness, stiffness, lubricity, dynamic coefficient of friction, heat transfer coefficient, abradability, heat deflection temperature, and melt temperature.

20. An ultrasonic surgical shears comprising:

a) an ultrasonic surgical blade;

b) a clamping arm operable to open and close toward the blade; and

c) a tissue pad attached to the clamping arm and having a clamping surface, wherein at least a portion of the tissue pad is resiliently flexible in a direction substantially perpendicular to the clamping surface.

21. The ultrasonic surgical shears of claim 20, wherein the tissue pad comprises a tissue pad body including a base material and at least one filler material, wherein the at-least-one filler material has at least one property which has a different value from that of the at-least-one property of the base material, and wherein the at-least-one property is chosen from the group consisting of:

hardness, stiffness, lubricity, dynamic coefficient of friction, heat transfer coefficient, abradability, heat deflection temperature, and melt temperature.

22. The ultrasonic surgical shears of claim 20, wherein the tissue pad comprises a tissue pad body having adjoining first and second regions, wherein the first region includes a first material and wherein the second region includes a second material which is a different material from the first material.