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US4834097A
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US
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Cardio-valve assist unit and method for performing cardio-valve replacement surgery
Assignee: RICHARDSON & ASSOCIATES Ltd A CORP OF MI
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Filing: 1988-03-31
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Granted: 1989-05-30
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Expires: 2008-03-31
Abstract
Abstract There is disclosed a method for effecting cardio-valve replacement surgery. A clamp adapted to be fastened to an ether screen has multiple arms. These arms are linked together by a double clamp having two parts which are pivotable with respect to each other and within which the arms are both rotatable and slidable and which arms are simultaneously clamped in whatever position they may have been set. The clamping is effected by a draw bolt passing through both parts of the double clamp. At the free end of the arms is a clamp adapted to hold a replacement cardio-valve holder. The clamps and the arms are adjusted to present a replacement valve in a position such that it can be sutured into the heart of the patient without the surgeon having concern about the possibility of malalignment of the valve or suturing.
Inventors
- 👤 James L. Phillips
- 👤 Dale W. Richardson
- 👤 J. Donald Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:34
CPC Classifications
A; A61; A61B; A61B90/00; A61B90/50; A61B90/57; A61B2090/571; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2427
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
78 words
A method for performing cardio-valve replacement surgery which comprises: affixing a replacement cardio-valve in a cardio-valve holding means; adjusting said cardio-valve holding means to a substantially fixed position where the replacement cardio-valve can be sutured into the heart; clamping said holding means to a support means in a position in proximity to an operating table; and clamping said holding means rigidly in said position relative to said operating table and; then suturing the replacement cardio-valve into the heart.
Claim 2
Independent Claim
78 words
A method for performing cardio-valve replacement surgery which comprises: affixing a replacement cardio-valve in a cardio-valve holding means; adjusting said cardio-valve holding means to a substantially fixed position where the replacement cardio-valve can be sutured into the heart; clamping said holding means to a support means in a position in proximity to an operating table; and clamping said holding means rigidly in said position relative to said operating table and; then suturing the replacement cardio-valve into the heart.
Claim 3
Dependent Claim
38 words
A method of claim 1 wherein said cardio-valve holding means is clamped in a clamp means comprising a bore having a larger end tapering to a smaller end and screw means threaded into movement toward said smaller end.
Claim 4
Dependent Claim
212 words
A method of claim 1 in which the adjusting and clamping steps are effected by a cardio-valve assist unit which comprises: first clamp means adapted to be clamped in a fixed position relative to an operating table; first arm means affixed to said first clamp means and rigidly projecting therefrom; second arm means; double-clamp means for connecting said second arm means to said first arm means; said double-clamp means comprising two parts mounted for rotation one relative to the other, one of which is adapted to receive said first arm means for slidable movement therein and the other of which is adapted to receive said second arm means for slidable movement therein and single clamping screw means adapted simultaneously to clamp said two parts on said arm means in any position to which they may have been adjusted and said two parts in fixed relation to each other; and third clamp means mounted in said second arm means for clamping a cardio-valve holding means to said second arm in rigid relation thereto; whereby, when a cardio-valve holding means having a cardio-valve therein is clamped in said third clamp means, the cardio-valve can be placed in position for suturing into the heart and held firmly in that position until the suturing is complete.
Claim 5
Dependent Claim
19 words
A method of claim 3 wherein said arm means are also mounted for rotatable movement in said clamp means.
Claim 6
Dependent Claim
20 words
A method of claim 3 wherein said cardio-valve holding means is clamped in position substantially normal to said second arm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-29 | 1992-11-28 | 1993-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-29 | 1996-11-28 | 1997-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-29 | 2000-11-28 | 2001-05-30 | $7700.00 | Window Closed / Lapsed |