US4220155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for spaying large animals
Assignee: Colorado State University Research Foundation
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Filing: 1978-05-11
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Granted: 1980-09-02
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Expires: 1998-05-11
Abstract
Abstract This invention relates to a surgical tool for use in removing the ovaries from large animals that is characterized by a pair of telescoped tubes, the inner tube of the pair terminating in a pointed end movable from a retracted position recessed inside the outer to an extended position projecting therebeyond. The inner tube is also rotatable within the outer tube so as to bring a pair of oval-shaped openings into registry with one another, so as to receive the ovaries to be removed one at a time. These openings have knife-edged margins effective to excise the ovary inside the tubes upon rotation of the inner tube within the outer. A plunger is also housed within the inner tube effective upon extension from a normally retracted position to push an excised ovary into a storage area behind the point of the inner tube thus clearing the opening therein to receive the second one. The invention also encompasses the novel method for removing the ovaries from large animals which comprises inserting the tool into the vagina, extending the pointed end of the inner tube and puncturing the vaginal wall therewith, retracting the point and inserting the tool into the abdomen with the openings therein in registry with one another, manipulating the first of the two ovaries per rectum into the openings and rotating the inner tube relative to the outer to excise same, and removing the tool.
Inventors
- 👤 Cleon V. Kimberling
- 👤 Gary P. Rupp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:01
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3417; A61B17/32; A61B17/320016; A61D; A61D1/00; A61D1/06; A61B17/3421; A61B2017/345; A61B2017/3452
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
328 words
The surgical tool for excising the ovaries from large animals which comprises: an outer tubular member having an ovary-receiving opening in the wall thereof bordered by a sharpened inside edge, an inner tubular element telescoped within the outer tubular element cooperating therewith to define a close sliding fit for both relative axial and rotational movement, said inner tubular element terminating at one end in a point effective to puncture the wall of the animal's abdominal cavity, said inner tubular element having an ovary-receiving opening in the wall thereof bordered by a sharpened edge positioned and adapted to cooperate in aligned position with the sharpened edge of the opening in the outer tubular element upon relative movement therebetween to cut an ovary housed within the inner tubular element free of its connecting tissue, and said ovary-receiving opening of the inner tubular element being spaced from said point thereof a distance effective to leave a storage compartment therebetween of a size to house an excised ovary, first handle-forming means depending from the end of the inner tubular element opposite said pointed end thereof, said first handle-forming means being accessible beyond the adjacent end of the outer tubular element and adapted for use in reciprocating said inner tubular element between an extended position with its pointed end exposed beyond the corresponding end of said ouer tubular element and a retracted position withdrawn inside the latter, and said first handle-forming means also providing means for rotating the inner tubular element within said outer tubular element while the latter is held stationary, and a pushrod mounted for relative reciprocating movement within the inner tubular element between a retracted position on the opposite side of the ovary-receiving opening therein from the pointed end thereof and an extended position on the same side thereof, said pushrod being accessible from said opposite end of the inner tubular element and effective upon actuation with an excised ovary inside the latter to push same into said storage compartment.
Claim 2
Dependent Claim
328 words
The surgical tool for excising the ovaries from large animals which comprises: an outer tubular member having an ovary-receiving opening in the wall thereof bordered by a sharpened inside edge, an inner tubular element telescoped within the outer tubular element cooperating therewith to define a close sliding fit for both relative axial and rotational movement, said inner tubular element terminating at one end in a point effective to puncture the wall of the animal's abdominal cavity, said inner tubular element having an ovary-receiving opening in the wall thereof bordered by a sharpened edge positioned and adapted to cooperate in aligned position with the sharpened edge of the opening in the outer tubular element upon relative movement therebetween to cut an ovary housed within the inner tubular element free of its connecting tissue, and said ovary-receiving opening of the inner tubular element being spaced from said point thereof a distance effective to leave a storage compartment therebetween of a size to house an excised ovary, first handle-forming means depending from the end of the inner tubular element opposite said pointed end thereof, said first handle-forming means being accessible beyond the adjacent end of the outer tubular element and adapted for use in reciprocating said inner tubular element between an extended position with its pointed end exposed beyond the corresponding end of said ouer tubular element and a retracted position withdrawn inside the latter, and said first handle-forming means also providing means for rotating the inner tubular element within said outer tubular element while the latter is held stationary, and a pushrod mounted for relative reciprocating movement within the inner tubular element between a retracted position on the opposite side of the ovary-receiving opening therein from the pointed end thereof and an extended position on the same side thereof, said pushrod being accessible from said opposite end of the inner tubular element and effective upon actuation with an excised ovary inside the latter to push same into said storage compartment.
Claim 3
Dependent Claim
73 words
The surgical tool as set forth in claim 1 in which: second handle-forming means are mounted on the end of the outer tubular element adjacent the first handle-forming means, said second handle-forming means being adapted to be grasped by the fingers of the operator's hand in a manner to hold said outer tube stationary while the thumb and palm of the same hand are manipulated to extend or rotate said inner tubular element.
Claim 4
Dependent Claim
30 words
The surgical tool as set forth in claim 1 wherein: spring means extending between spaced abutments on the inner tubular element and pushrod normally bias the latter into retracted position.
Claim 5
Dependent Claim
65 words
The surgical tool as set forth in claim 1 wherein: front and rear centrally-apertured guides are mounted in axially-spaced relation within the inner tubular element, the pushrod is mounted for axially-slidable movement within said apertured guides, and in which a head is provided on the pushrod position and adapted to engage the front guide and cooperate therewith to limit the retractable movement of said rod.
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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) | 1983-09-02 | 1984-03-03 | 1984-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-02 | 1988-03-03 | 1988-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-02 | 1992-03-03 | 1992-09-02 | $7700.00 | Window Closed / Lapsed |