Thermal cautery surgical forceps

• US 6,235,027 B1
• Filed: 01/21/1999
• Issued: 05/22/2001
• Est. Priority Date: 01/21/1999
• Status: Expired due to Term

• Current Assignee: Garrett D. Herzon
• Original Assignee: Garrett D. Herzon
• Inventors: Herzon, Garrett D.
• Primary Examiner(s): Leubecker, John P.
• Assistant Examiner(s): Ram, Jocelyn
• Application Number:
  US09/235,229
• Time in Patent Office: 852 Days
• Field of Search: 606/27, 606/28, 606/29, 606/30, 606/31, 606/41, 606/42, 606/49, 606/52, 606/51
• US Class Current: 606/51
• CPC Class Codes: A61B 18/04 by heating by applying electromagnetic radiation A61B18/18; hyperthermia using electric or magnetic fields, radiation or ultrasound A61N
• CPC Class Codes: A61B 18/08 by means of electrically-heated probes
• CPC Class Codes: A61B 18/085 Forceps, scissors
• CPC Class Codes: A61B 18/10 Power sources therefor
• CPC Class Codes: A61B 2017/00734 battery operated
• CPC Class Codes: A61B 2018/00404 Blood vessels other than those in or around the heart
• CPC Class Codes: A61B 2018/00595 Cauterization

Abstract

A portable, thermal cauterizing forceps device for use in surgery. The device incorporates a pair of ceramic heater elements mounted within the tips of the tines of a forceps. The forceps is used to grasp tissue or blood vessels and apply heat to effect cauterization. In the case of the first embodiment of the invention, the forceps instrument incorporates a battery and control electronics. The thermal-forceps is of a self-contained wireless, handheld disposable design. In a second embodiment of the invention, the forceps handpiece is connected to an external power source. Both embodiments of the forceps incorporate set of rapidly heating ceramic heater elements that may be composed of silicon nitride. An LED provides the operator feedback as to the operating level of the heaters and/or battery reserve. Enhancements to the second embodiment include a rechargeable power supply, variable control of the heater temperature, as well as a, digital display of the tip temperature.

Claims

1. A thermocautery surgical forceps comprising:

a surgical forceps body including a pair of elongate tine members extending from the forceps body to respective free end tip portions spaced from the forceps body, the tine members being mounted to the forceps body in a manner providing resilient compressible movement of the tine members between a normally open position wherein the tines are disposed in aligned, parallel, spaced-apart relationship and a squeezed closed position wherein the tip portions of the tine members are disposed in confronting abutting relationship;

said tip portions of the tine members comprising respective ceramic heater elements having opposed flat gripping and heating surfaces defined on inner facing surfaces of resdective portions, the heater elements connected to power source leads; and

the tine members capable of being squeezed together toward their squeezed closed position to grippingly, squeezably engage tissue to be cauterized between the flat gripping and heating surfaces of said ceramic heater elements with the flat gripping and heating surfaces applying substantially uniform pressure and heat to the tissue gripped between the flat gripping and heating surfaces.

2. A thermocautery surgical forceps as defined in claim 1, wherein the ceramic heater elements comprise silicon nitride.

3. A thermocautery surgical forceps as defined in claim 1, further including a switch operationally electrically connected to the ceramic heater elements and the power source leads, and which is effective to automatically turn the ceramic heater elements on to heat the tissue contact surfaces to elevated tissue cauterizing temperature as the tines are moved from the normally open position to the squeezed closed position.

4. A thermocautery surgical forceps as defined in claim 1, which is sterilized and intended for one time disposable use.

5. A thermocautery surgical forceps as defined in claim 1, further comprising a rechargeable battery.

6. The forceps according to claim 1, wherein said flat gripping and heating surfaces are non-stick heating surfaces.

7. A method for thermocauterizing tissue, comprising the steps of:

squeezably grippingly engaging tissue to be cauterized between tip portions of a thermocautery surgical forceps including a pair of spaced and opposed tine members each having tip portions, each tip portion including a ceramic heater element with a flat gripping and heating surface; and

activating the ceramic heater elements to heat the flat gripping and heating surfaces thereof to tissue cauterizing temperature and thereby applying substantially uniform pressure and heat to a tissue gripped between the gripping and heating surfaces.

8. The forceps according to claim 7, wherein said flat gripping and heating surfaces are non-stick heating surfaces.

9. A thermocautery forceps kit comprising:

a surgical forceps body including a pair of elongate tine members extending from the forceps body to respective free end tip portions spaced from the forceps body, the tine members being mounted to the forceps body in a manner providing resilient compressible movement of the tine members between a normally open position wherein the tines are disposed in aligned, parallel, spaced-apart relationship and a squeezed closed position wherein the tip portions of the tine members are disposed in confronting abutting relationship;

said tip portions of the tine members comprising respective ceramic heater elements having opposed flat gripping and heating surfaces defined on inner facing surfaces of respective tip portions, the heater elements connected to power source leads;

the tine members capable of being squeezed together toward their squeezed closed position to grippingly, squeezably engage tissue to be cauterized between the flat gripping and heating surfaces of said ceramic heater elements with the flat gripping and heating surfaces applying substantially uniform pressure and heat to the tissue gripped between the flat gripping and heating surfaces; and

the thermocautery forceps kit further comprising a heat-resistant holster assembly for holding the forceps body.

10. A thermocautery surgical forceps as defined in claim 9, further comprising at least one battery.

11. A thermocautery surgical forceps as defined in claim 10, wherein at least one battery comprises four 3 volt lithium batteries.

12. A thermocautery surgical forceps as defined in claim 10, wherein at least one battery comprises two 9 volt batteries.

13. A thermocautery surgical forceps as defined in claim 10, wherein the battery comprises an 11.5 volt battery.

14. A thermocautery surgical forceps as defined in claim 9, further comprising a 12 volt DC power supply unit that is connected to the forceps via said power source leads.

15. A thermocautery surgical forceps kit as defined in claim 9, further comprising a rechargeable battery.

16. The forceps according to claim 9, wherein said flat gripping and heating surfaces are non-stick heating surfaces.

17. A thermocautery surgical forceps comprising:

a surgical forceps body including a pair of elongate tine members extending from the forceps body to respective free end tip portions spaced from the forceps body, the tine members being mounted to the forceps body in a manner providing resilient compressible movement of the tine members between a normally open position wherein the tines are disposed in aligned, parallel, spaced-apart relationship and a squeezed closed position wherein the tip portions of the tine members are disposed in confronting abutting relationship;

said tip portions of the tine members comprising respective ceramic heater elements having opposed flat gripping and heating surfaces applying substantially uniform pressure and heat to the tissue gripped between the flat gripping and heating surfaces; and

the forceps connected to power source leads.

18. A thermocautery surgical forceps as defined in claim 17, further comprising a 110 v AC power supply connected to said power source leads.

19. A thermocautery surgical forceps as defined in claim 17, further comprising a 12 v DC power supply unit connected to said power source leads.

20. The forceps according to claim 17, wherein said flat gripping and heating surfaces are non-stick heating surfaces.