Patent US3911930A successfully refreshed from Google Patents.
US4459978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical retractor device
Assignee: ENDOSCOPY SURGICAL SYSTEMS Inc WHITE HAVEN PA A CORP OF
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Filing: 1982-05-17
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Granted: 1984-07-17
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Expires: 2002-05-17
Abstract
Abstract An expandable fingers medical device which improves surgical speed and precision and enhances patient care and recovery by minimizing anesthesia time, trauma, infection and iatrogenic complications and increases viability of anastomosis. The medical device has fingers which expand and spread out in response to actuation of a control assembly. In the illustrative embodiment, the control assembly has a wrist mounting which holds the fingers and a wire rope for pulling the fingers against the cammed end of a tube. A threaded rod is secured to the distal end of the wire rope for threaded engagement with an internally threaded knob. When the knob is turned in one direction, the rod and wire rope are pulled causing the fingers to cam against the cammed end of the tube, thereby causing the fingers to spread apart. When the knob is turned in the opposite direction, the rod and wire rope are pushed causing the fingers to retract.
Inventors
- 👤 Constantine Kotsanis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:18
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B90/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
122 words
A medical device, comprising: tube means having a cammed end and a distal end; wrist mounting means axially spaced from said tube means; a plurality of fingers each having an unattached end and an attached end connected to said wrist mounting means, each of said fingers having a cam-engaging surface facing generally inwardly and towards said cammed end of said tube means; and pulling means extending through said tube means for pulling said inward cam-engaging surfaces of said fingers into camming engagement with said cammed end of said tube means to move said fingers from a retracted position to an expanded position to engage against the internal wall of a tubular organ and retain the medical device at a desired anatomical site.
Claim 2
Dependent Claim
122 words
A medical device, comprising: tube means having a cammed end and a distal end; wrist mounting means axially spaced from said tube means; a plurality of fingers each having an unattached end and an attached end connected to said wrist mounting means, each of said fingers having a cam-engaging surface facing generally inwardly and towards said cammed end of said tube means; and pulling means extending through said tube means for pulling said inward cam-engaging surfaces of said fingers into camming engagement with said cammed end of said tube means to move said fingers from a retracted position to an expanded position to engage against the internal wall of a tubular organ and retain the medical device at a desired anatomical site.
Claim 3
Dependent Claim
38 words
A medical device in accordance with claim 1 wherein each of said fingers has a proximal phalanx and a distal phalanx and said cam-engaging surface is positioned intermediate and connected to said proximal phalanx and said distal phalanx.
Claim 4
Dependent Claim
23 words
A medical device in accordance with claim 2 wherein each of said fingers has a hooked end extending outwardly from said distal phalanx.
Claim 5
Dependent Claim
16 words
A medical device in accordance with claim 1 wherein said pulling means includes a wire rope.
Claim 6
Dependent Claim
19 words
A medical device in accordance with claim 4 wherein said wire rope is connected to said wrist mounting means.
Claim 7
Dependent Claim
42 words
A medical device in accordance with claim 4 wherein said pulling means includes a threaded rod clampingly engaging said wire rope and an internally threaded control knob seated upon said distal end of said tube means for threadedly engaging said threaded rod.
Claim 8
Dependent Claim
15 words
A medical device in accordance with claim 1 wherein said tube means is generally L-shaped.
Claim 9
Dependent Claim
27 words
A medical device in accordance with claim 1 further including a C-ring for clamping said fingers against said lumen when said fingers are in an expanded position.
Claim 10
Dependent Claim
21 words
A medical device in accordance with claim 8 wherein said C-ring defines a plurality of notches which provide a suturing guide.
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) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |