US4805618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oviduct closing apparatus
Assignee: Olympus Corp
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Filing: 1988-04-11
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Granted: 1989-02-21
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Expires: 2008-04-11
Abstract
Abstract An oviduct-closing apparatus includes a body having a clamping portion. The clamping portion is prepared from a shape memory alloy. The clamping portion deforms into an open state engageable with an oviduct or a closed state capable of clamping the oviduct, in accordance with temperature change.
Inventors
- 👤 Yasuhiro Ueda
- 👤 Isao Nagai
- 👤 Naruto Shinkai
- 👤 Masaaki Nakazawa
- 👤 Toshiki Terayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:40
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/20; A61F6/206; A61F6/202; A61F6/204; A61F2/00; A61F2/0004
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
172 words
An oviduct-closing apparatus for closing an oviduct passage comprising: a body provided with a passage closing portion which is deformable to assume an open state for engagement with an oviduct, and a closed state capable of closing the oviduct passage, said portion being prepared from a shape memory alloy and deforming from the open to the closed state or vice versa according to a predetermined temperature change; a flexible support pipe means adapted to accommodate in its distal end at least a portion of said body; a probe means sized to slide through said pipe means toward said distal end, and adapted to be heated to a preselected temperature; wherein said body is constructed and arranged so that all of said body including said passage closing portion can be operatively applied to an oviduct when said body is inserted in the distal end of said flexible support pipe means, and the state of said passage closing portion is deformed by thermal contact with said probe means inserted into the support pipe means.
Claim 2
Dependent Claim
172 words
An oviduct-closing apparatus for closing an oviduct passage comprising: a body provided with a passage closing portion which is deformable to assume an open state for engagement with an oviduct, and a closed state capable of closing the oviduct passage, said portion being prepared from a shape memory alloy and deforming from the open to the closed state or vice versa according to a predetermined temperature change; a flexible support pipe means adapted to accommodate in its distal end at least a portion of said body; a probe means sized to slide through said pipe means toward said distal end, and adapted to be heated to a preselected temperature; wherein said body is constructed and arranged so that all of said body including said passage closing portion can be operatively applied to an oviduct when said body is inserted in the distal end of said flexible support pipe means, and the state of said passage closing portion is deformed by thermal contact with said probe means inserted into the support pipe means.
Claim 3
Dependent Claim
78 words
The apparatus according to claim 1, wherein said body is formed of plate-like shape memory alloy, and has an intermediate section and paired mutually facing clamping strips extending from the intermediate section; and said clamping strips are formed to be deformable between an open state in which said strips are separated from each other at the predetermined distance and a closed state in which said strips are drawn close to each other, thereby constituting said passage closing portion.
Claim 4
Dependent Claim
50 words
The apparatus according to claim 2, wherein said body is prepared from a unidirectional shape memory alloy having a predetermined transformation temperature so that when the body is heated to a higher level than the transformation temperature, said passage closing portion deforms from the open state to the closed state.
Claim 5
Dependent Claim
50 words
The apparatus according to claim 2, wherein said body is prepared from a unidirectional shape memory alloy having a predetermined transformation temperature so that when the body is heated to a higher level than the transformation temperature, said passage closing portion deforms from the closed state to the open state.
Claim 6
Dependent Claim
87 words
The apparatus according to claim 2, wherein said body is prepared from a 2-directional shape memory alloy having a high transformation temperature and a low transformation temperature so that when the body is heated to a higher level than that of the high transformation temperature, the passage closing portion deforms from the closed state to the open state and when the body is cooled to a lower level than that of the low transformation temperature, the clamping portion deforms from the closed state to the open state.
Claim 7
Dependent Claim
85 words
The apparatus according to claim 2, wherein said body is prepared from a 2-directional shape memory alloy having a high transformation temperature and a low transformation temperature so that when the body is heated to a higher level than that of the high transformation temperature, the passage closing portion deforms from the open state to the closed state and when the body is cooled a lower level than that of the low transformation temperature, the clamping portion deforms from the-open state to the closed state.
Claim 8
Dependent Claim
16 words
The apparatus according to claim 1, wherein said shape memory alloy is prepared from Ti-Ni alloy.
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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) | 1992-02-21 | 1992-08-22 | 1993-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-21 | 1996-08-22 | 1997-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-21 | 2000-08-22 | 2001-02-21 | $7700.00 | Window Closed / Lapsed |