US4210146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical instrument with flexible blade
Assignee: Individual
•
Filing: 1978-06-01
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Granted: 1980-07-01
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Expires: 1998-06-01
Abstract
Abstract A surgical instrument with a bendable blade which moves with respect to an opening in the instrument tip to make a shearing action to cut tissue which enters the opening.
Inventors
- 👤 Anton Banko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:49
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/00736; A61F9/00763
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
139 words
A surgical instrument comprising: a hollow tubular member having a tip portion which tapers to a smaller diameter than the major part of the member, said tapered tip having an opening formed therein, a shaft within said tubular member, means for reciprocating said shaft toward and away from said tapered tip of said tubular member, a blade mounted on said shaft and having a first portion adapted to move within the tapered tip of said tubular member, said blade formed to deform by engaging the tubular member and to conform to the tapered shape of the tip as the blade is moved further into said tip so that the blade makes a shearing cut of material in the tip opening in cooperation with the wall of the tubular member surrounding the opening as the blade sweeps across the opening.
Claim 2
Dependent Claim
139 words
A surgical instrument comprising: a hollow tubular member having a tip portion which tapers to a smaller diameter than the major part of the member, said tapered tip having an opening formed therein, a shaft within said tubular member, means for reciprocating said shaft toward and away from said tapered tip of said tubular member, a blade mounted on said shaft and having a first portion adapted to move within the tapered tip of said tubular member, said blade formed to deform by engaging the tubular member and to conform to the tapered shape of the tip as the blade is moved further into said tip so that the blade makes a shearing cut of material in the tip opening in cooperation with the wall of the tubular member surrounding the opening as the blade sweeps across the opening.
Claim 3
Dependent Claim
30 words
A surgical instrument as in claim 1 wherein said blade is formed of a piece of sheet material which is bent to conform to the shape of the tubular member.
Claim 4
Dependent Claim
49 words
A surgical instrument as in claim 1 wherein said first portion of said blade has a sharpened edge to sever material entering said opening of the tubular member tapered tip portion by a shearing action between said sharpened edge and the wall of the tubular member surrounding said opening.
Claim 5
Dependent Claim
18 words
A surgical instrument as in claim 1 wherein said front portion of said blade includes a sharpened edge.
Claim 6
Dependent Claim
49 words
A surgical instrument as in claim 1 wherein said blade is formed as a generally arcuate surface, a portion of said surface being removed to provide a hinge area about which the blade can bend when force is applied thereto by contact with the inner wall of the tip.
Claim 7
Dependent Claim
36 words
A surgical instrument as in claim 5 wherein the cutout portion of the blade surface is generally arcuate and the blade surface tapers from the end of the cutout portion toward the tip of the blade.
Claim 8
Dependent Claim
34 words
A surgical instrument as in claim 1 wherein said means for reciprocating said shaft comprises a cam and cam follower, motor means for rotating said cam, and said shaft being attached to said cam.
Claim 9
Dependent Claim
25 words
A surgical instrument as in claim 1 wherein the blade is formed to decrease its diameter as it is moved further into the tapered tip.
Claim 10
Dependent Claim
32 words
A surgical instrument as in claim 8 wherein the blade has a portion which is also found to deform inwardly of the tip as the blade is moved further into the tip.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-01 | 1983-12-31 | 1984-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-01 | 1987-12-31 | 1988-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-01 | 1991-12-31 | 1992-07-01 | $7700.00 | Window Closed / Lapsed |