Claims
- 1. A loop electrode for use in an electrocautery probe having two arms between which said electrode is mounted, said electrode comprising:
- a substantially U-shaped conductive member angled proximally relative to a plane substantially perpendicular to a longitudinal axis of the electrocautery probe, the conductive member having a cross section defining a broad lower surface edge.
- 2. A loop electrode according to claim 1, wherein:
- said cross section further defines an upper surface, a leading distal surface, a lower distal surface and a proximal surface.
- 3. A loop electrode according to claim 2, wherein:
- said lower distal and proximal surfaces form a lower proximal edge having an obtuse angle, and said leading distal surface and said lower distal surface form a lower distal edge.
- 4. A loop electrode according to claim 3, wherein:
- said lower distal edge has an angle of approximately 95.degree.-105.degree., and said lower proximal edge has an angle of approximately 135.degree.-150.degree..
- 5. A loop electrode according to claim 3, wherein:
- said upper surface has a length of approximately 0.043-0.061 inches.
- 6. A loop electrode according to claim 5, wherein:
- said leading distal surface extends approximately 0.018-0.022 inches between said upper surface and said lower distal surface, and said lower distal surface extends approximately 0.024-0.032 inches between said leading distal surface and said proximal surface.
- 7. A loop electrode according to claim 1, wherein:
- said cross section defines a sharp upper distal edge and a sharp upper proximal edge.
- 8. A loop electrode according to claim 7, wherein:
- said upper distal edge has an angle of approximately between 55.degree.-65.degree., and said upper proximal edge has an angle of approximately 42.degree.-52.degree..
- 9. A loop electrode according to claim 1, wherein:
- said U-shaped conductive member has a height approximately 0.180-0.220 inches.
- 10. The loop electrode of claim 1, wherein the conductive member is angled approximately 25.degree. to 35.degree. proximally relative to the plane substantially perpendicular to the longitudinal axis.
- 11. An electrocautery probe for use with a resectoscope, comprising:
- a) a pair of conductive arms having proximal and distal ends, said arms joined together at their proximal ends;
- b) an electrode lead coupled to said proximal ends of said conductive arms and extending proximally therefrom, said electrode lead defining a longitudinal axis; and
- c) a substantially U-shaped electrode angled proximally relative to a plane substantially perpendicular to the longitudinal axis, the electrode having two upper ends, each of which is coupled to a respective one of said distal ends of said pair of conductive arms, said electrode having a cross section which defines a broad flat lower surface and at least one edge.
- 12. An electrocautery probe according to claim 11, wherein:
- said arms lie in a first plane which is skewed from said axis of said electrode lead.
- 13. An electrocautery probe according to claim 11, wherein:
- said cross section further defines an upper surface, a leading distal surface, a lower distal surface and a proximal surface.
- 14. An electrocautery probe according to claim 13, wherein:
- said lower distal and proximal surfaces form a lower proximal edge having an obtuse angle, and said leading distal surface and said lower distal surface form a lower distal edge.
- 15. An electrocautery probe according to claim 14, wherein:
- said lower distal edge has an angle of approximately 95.degree.-105.degree., and said lower proximal edge has an angle of approximately 135.degree.-150.degree..
- 16. An electrocautery probe according to claim 14, wherein:
- said upper surface has a length of approximately 0.043-0.061 inches.
- 17. An electrocautery probe according to claim 16, wherein:
- said leading distal surface extends approximately 0.018-0.022 inches between said upper surface and said lower distal surface, and said lower distal surface extends approximately 0.024-0.032 inches between said leading distal surface and said proximal surface.
- 18. An electrocautery probe according to claim 11, wherein:
- said cross section defines a sharp upper distal edge and a sharp upper proximal edge.
- 19. An electrocautery probe according to claim 18, wherein:
- said upper distal edge has an angle of approximately between 55.degree.-65.degree., and said upper proximal edge has an angle of approximately 42.degree.-52.degree..
- 20. An electrocautery probe according to claim 11, further comprising:
- d) an insulative sheath extending over said arms and terminating at said distal end of said arms in a straight edge substantially perpendicular to a plane formed by said arms.
- 21. An electrocautery probe according to claim 11, wherein:
- said U-shaped member has a height approximately 0.180-0.220 inches.
- 22. An electrocautery probe according to claim 11, further comprising:
- d) a mounting sleeve for slideably coupling said probe to the resectoscope, said mounting sleeve made of a material which reduces capacitive coupling.
- 23. The electrocautery probe of claim 11, wherein the U-shaped electrode is angled approximately 25.degree. to 35.degree. proximally relative to the plane substantially perpendicular to the longitudinal axis.
Parent Case Info
This application is a continuation-in-part of U.S. Ser. No. 08/425,386, filed on Apr. 20, 1995, now U.S. Pat. No. 5,569,244, the complete disclosure of which is hereby incorporated by reference herein.
US Referenced Citations (45)
Foreign Referenced Citations (1)
Number |
Date |
Country |
3707-403 |
Sep 1987 |
DEX |
Non-Patent Literature Citations (4)
Entry |
Product Literature for WEDGE.TM.; Microvasive, Boston Scientific Corporation; 2 pages. |
VaporTome.TM. Resection Electrode Instructions for Use; Cataolg No. VE-LG; Circon ACMI; 6 pages. |
Product Literature for STORZ Electrodes, Curettes, Cannulas,; 1 page. |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
425386 |
Apr 1995 |
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