Utilization of a hybrid material in a surface coating of an electrosurgical instrument

• US 6,951,559 B1
• Filed: 06/21/2002
• Issued: 10/04/2005
• Est. Priority Date: 06/21/2002
• Status: Active Grant

• Current Assignee: Megadyne Medical Products Incorporated (Johnson & Johnson)
• Original Assignee: Megadyne Medical Products Incorporated (Johnson & Johnson)
• Inventors: Greep, Darcy W.
• Primary Examiner(s): Peffley, Michael
• Assistant Examiner(s): ROANE, AARON F
• Application Number:
  US10/177,351
• Time in Patent Office: 1,201 Days
• Field of Search: 606 41- 52
• US Class Current: 606/41
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 2018/00107 Coatings on the energy applicator
• CPC Class Codes: A61B 2018/0013 non-sticking
• CPC Class Codes: A61B 2018/00136 with polymer

Abstract

Applying and utilizing a hybrid material in a surface coating to provide or enhance properties, attributes and/or characteristics to the surface, such as at least a portion of an electrosurgical electrode tip. The hybrid material includes a combination of at least one of an organic polymer, an inorganic polymer, or an organic material with at least one of a ceramic or a silicon. The presence of the hybrid material coating layer provides a high temperature stability that withstands the temperatures of electrosurgery and a flexibility to increase the durability of the surface. Other materials may be included in the surface coating, such as a fluoropolymer, a water-soluble polymer, catalytic particles that may be activated or other materials that enhance the properties, characteristics and/or attributes of the coated surface. Optionally, an additional covering layer may be applied over the hybrid material coating layer to enhance the characteristics of the coated surface.

Claims

1. An electrosurgical instrument comprising:

an electrode including an appropriately sized and configured conductive tip for performing an electrosurgical procedure; and

a coating on at least a portion of the tip, wherein the coating includes a hybrid material comprised of at least one of a polymer or organic material and at least one of a ceramic or silicon and a fluoropolymer.

2. An electrosurgical instrument as recited in claim 1, wherein the coating further includes an etching agent.

3. An electrosurgical instrument as recited in claim 1, wherein the coating further includes one or more catalytic particles.

4. An electrosurgical instrument as recited in claim 3, further comprising an energy source communicating with the tip to activate the catalytic particles, wherein the activated catalytic particles interact with eschar, which accumulated on the tip during an electrosurgical procedure, to release the eschar from the tip.

5. An electrosurgical instrument as recited in claim 4, wherein the energy source includes at least one of:

a heat source;

a light source;

a microwave source;

or

an electromagnetic radiation source.

6. An electrosurgical instrument as recited in claim 1, wherein the coating further comprises a water-soluble polymer.

7. An electrosurgical instrument as recited in claim 6, wherein the water-soluble polymer comprises at least one of:

(i) polyethylene oxide;

(ii) polyethylene glycol;

or

(iii) a copolymer of ethylene oxide.

8. An electrosurgical instrument as recited in claim 6, wherein the water-soluble polymer is a radical scavenger that reduces damage to a binder material during a process of gamma sterilization.

9. An electrosurgical instrument as recited in claim 6, wherein the water-soluble polymer is a carrier that deposits a factor on a contact area of a patient'"'"'s body during the electrosurgical procedure.

10. An electrosurgical instrument as recited in claim 9, wherein the factor includes at least one of:

(i) an antibiotic factor;

(ii) a healing factor;

(iii) an anti-adhesion factor;

(iv) an anti-tumor factor;

or

(v) a tumor necrosis factor.

11. An electrosurgical instrument as recited in claim 6, wherein the water-soluble polymer provides a low shear, sacrificial layer to the tip.

12. A tip that may be used in association with an electrosurgical electrode for performing an electrosurgical procedure, the tip comprising:

a substrate, and a coating applied to at least a portion of the substrate, wherein the coating includes a hybrid material comprised of at least one of a polymer or organic material and at least one of a ceramic or silicon and a fluoropolymer.

13. A tip as recited in claim 12, wherein the substrate is conductive.

14. A tip as recited in claim 13, wherein the substrate includes surgical stainless steel.

15. A tip as recited in claim 13, wherein the substrate includes roughened metal.

16. A tip as recited in claim 12, wherein the coating further includes an etching agent.

17. A tip as recited in claim 12, wherein the coating further includes a water-soluble polymer.

18. A tip as recited in claim 17, wherein the water-soluble polymer includes at least one of:

(i) polyethylene oxide;

(ii) polyethylene glycol;

or

(iii) a copolymer of ethylene oxide.

19. A tip as recited in claim 17, wherein the water-soluble polymer is a radical scavenger that reduces damage to a binder material during a process of gamma sterilization.

20. A tip as recited in claim 17, wherein the water-soluble polymer provides a low shear, sacrificial layer.

21. A tip as recited in claim 17, wherein the water-soluble polymer is a carrier that deposits a factor on a patient during an electrosurgical procedure.

22. A tip as recited in claim 21, wherein the factor comprises at least one of:

(i) an antibiotic factor;

(ii) a healing factor;

(iii) an anti-adhesion factor;

(iv) an anti-tumor factor;

or

(v) a tumor necrosis factor.

23. A tip as recited in claim 12, wherein the coating further includes one or more catalytic particles that may be activated to interact with eschar that accumulated on the tip during an electrosurgical procedure, and wherein the interaction breaks one or more bonds between the eschar and the tip to allow a release of the eschar from the tip.

24. A tip as recited in claim 23, wherein the coating includes a first layer and a second layer, wherein the second layer is on at least a portion of the first layer, and wherein the first layer includes the hybrid material and the second layer includes the catalytic particles and a binder material that comprises at least one of:

(i) a fluoropolymer;

(ii) a ceramic;

(iii) a silicon;

(iv) a metal;

or

(v) a sol gel deposition.

25. A tip as recited in claim 24, wherein the coating further includes a third layer, located on top of at least a portion of the binder material, that includes a water-soluble polymer.

26. A method for coating a tip of an electrosurgical electrode, the method comprising the acts of:

providing a tip of an electrosurgical electrode; and

applying a coating to the tip, wherein the coating includes a hybrid material comprised of at least one of a polymer or organic material and at least one of a ceramic or silicon and a fluoropolymer.

27. A method as recited in claim 26, wherein the tip is conductive, and wherein the act of applying a coating includes using at least one of:

(i) a dip process;

(ii) a spray process;

or

(iii) a low temperature application process.

28. A method as recited in claim 26, further comprising the act of mixing the hybrid material with a supplementary material prior to performing the act of applying the coating, and wherein the coating further includes the supplementary material.

29. A method as recited in claim 28, wherein the supplementary material includes at least one of:

(i) a water-soluble polymer;

or

(ii) a catalytic particle.

30. A method as recited in claim 29, wherein the act of mixing the hybrid material with the supplementary material further includes mixing the hybrid material with an etching agent, and wherein the coating further includes the etching agent.

31. A method as recited in claim 26, further comprising the act of applying a second coating onto at least a portion of the coating, wherein the second coating includes at least one of:

(i) a fluoropolymer;

(ii) a water-soluble polymer;

or

(iii) a catalytic particle.

32. A method as recited in claim 31, wherein the second coating includes at least one of:

(i) polyethylene oxide;

(ii) polyethylene glycol;

or

(iii) a copolymer of ethylene oxide.

33. A method as recited in claim 32, wherein the second coating includes a carrier that deposits a factor on a patient'"'"'s body during an electrosurgical procedure.