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 Title: |
US4561445:
Elongated needle electrode and method of making same
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Berke, Joseph J.; West Bloomfield, MI 48033
Michael, Charles T.; Troy, MI
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| Assignee: |
Berke; Joseph J., West Bloomfield, MI
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| Published / Filed: |
1985-12-31
/ 1983-05-25
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| Application Number: |
US1983000498143
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| IPC Code: |
Advanced:
A61B 5/0492;
A61B 17/34;
Core:
A61B 5/0488;
more...
IPC-7:
A61B 5/04;
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| U.S. Class: |
Current:
600/372;
163/005;
604/274;
Original:
128/642;
604/274;
163/005;
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| Field of Search: |
128/642,734,784,741,303.18,329 R,329 A,339,340
604/239,272-274
163/1;5
D24/024,25
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| Priority Number: |
| 1983-05-25 |
US1983000498143 |
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| Abstract: |
A improved needle and method of forming the improved needle from an elongated cylindrical shank. The needle is formed by first cutting or grinding one end of the shank to create a first bevel surface disposed at an angle to the longitudinal axis of the needle. Thereafter as many as five additional bevel surfaces are formed or ground at the end of the shank with each bevel surface removing at least a portion of the peripheral edge of a previously formed bevel surface.
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| Attorney, Agent or Firm: |
Cullen, Sloman, Cantor, Grauer, Scott & Rutherford ;
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| Primary / Asst. Examiners: |
Cohen, Lee S.;
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| INPADOC Legal Status: |
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| Family: |
None
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First Claim:
Show all 10 claims |
What is claimed is:
1. An improved needle electrode comprising:
- an elongated insulated body of generally circular cross-section having a first end, a second end and a longitudinal axis;
- an inner conductive electrode in said elongated body extending from the first to the second end of said body;
- a first bevel surface formed at the first end of said body and positioned at an angle relative to the longitudinal axis of the elongated body to form a point at said first end thereby providing an exposed bevel surface area of said inner electrode;
- a first peripheral edge being defined as the intersection of the first bevel with the circumference of said elongated body; and
- a second bevel surface formed at one end of said first bevel surface remote from said point;
- a second peripheral edge defined as the intersection of the second bevel with the circumference of said elongated body;
- said second bevel reducing the exposed surface area of the exposed bevel surface of the inner electrode.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 32 U.S. patent(s) that reference this one
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