US5269782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bipolar medical coagulation and cauterizing instrument
Assignee: SELECT MEDIZIN-TECHNIK HERMANN SUTTER GmbH
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Filing: 1992-04-16
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Granted: 1993-12-14
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Expires: 2012-04-16
Abstract
Abstract A bipolar medical coagulation and/or cauterizing instrument has two elongated electrodes with first end portions which constitute the working end of the instrument and second end portions which are connectable to different poles of a high-frequency generator. The intermediate portions of the electrodes are surrounded by deformable insulators which are shrunk onto the respective electrodes and are confined in a tubular member serving to prevent the electrodes from moving relative to each other. To this end, the intermediate portions have cross sections which are out-of-round and/or which vary in the longitudinal direction of the respective electrodes. The insulators closely follow the outlines of the respective intermediate portions, and the tubular member closely follows the outlines of the insulators.
Inventors
- 👤 Hermann Sutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:02
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1402
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
89 words
A bipolar medical instrument comprising two elongated electrodes having neighboring first end portions, second end portions and intermediate portions between the respective first and second end portions; means for insulating said electrodes from each other, including tubular insulators surrounding and closely following outlines of said intermediate portions; and means for preventing movements of said electrodes relative to each other, including a tubular member confining said intermediate portions and having cross-sections closely following outlines of said insulators, said intermediate portions and said insulators having outlines which are out of round.
Claim 2
Dependent Claim
89 words
A bipolar medical instrument comprising two elongated electrodes having neighboring first end portions, second end portions and intermediate portions between the respective first and second end portions; means for insulating said electrodes from each other, including tubular insulators surrounding and closely following outlines of said intermediate portions; and means for preventing movements of said electrodes relative to each other, including a tubular member confining said intermediate portions and having cross-sections closely following outlines of said insulators, said intermediate portions and said insulators having outlines which are out of round.
Claim 3
Dependent Claim
21 words
The instrument of claim 1, wherein at least one of said intermediate portions and the respective insulator has a polygonal outline.
Claim 4
Dependent Claim
24 words
The instrument of claim 1, wherein at least one of said insulators is a deformable hose which is shrunk onto the respective intermediate portion.
Claim 5
Dependent Claim
25 words
The instrument of claim 1, wherein the first end portion of at least one of said electrodes is inclined relative to the respective intermediate portion.
Claim 6
Dependent Claim
35 words
The instrument of claim 1, wherein said intermediate portions are substantially parallel to each other and said first end portions are substantially parallel to each other and are inclined relative to the respective intermediate portions.
Claim 7
Dependent Claim
45 words
The instrument of claim 1, wherein one of said first end portions extends beyond said tubular member through a first distance and the other of said first end portions extends beyond said tubular member through a second distance which equals or approximates said first distance.
Claim 8
Dependent Claim
13 words
The instrument of claim 1, wherein said first end portions have different shapes.
Claim 9
Dependent Claim
14 words
The instrument of claim 1, wherein said first end portions have different cross sections.
Claim 10
Dependent Claim
36 words
The instrument of claim 1, wherein one of said first end portions has a first cross section and the other of said first end portions has a second cross section larger than said first cross section.
Claim 11
Dependent Claim
15 words
The instrument of claim 9, wherein at least one of said cross sections is circular.
Claim 12
Dependent Claim
35 words
The instrument of claim 1, wherein at least a portion of one of said electrodes comprises a first material and at least a portion of the other of said electrodes comprises a different second material.
Claim 13
Dependent Claim
14 words
The instrument of claim 1, wherein one of said electrodes comprises a heat-resistant material.
Claim 14
Dependent Claim
11 words
The instrument of claim 12, wherein said one electrode contains tungsten.
Claim 15
Dependent Claim
14 words
The instrument of claim 1, wherein at least one of said electrodes contains steel.
References Cited (Backward Citations)
US4076028A
Cited
US4732149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-13 | 1997-06-14 | 1997-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-13 | 2001-06-14 | 2001-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-13 | 2005-06-14 | 2005-12-14 | $7700.00 | Window Closed / Lapsed |