US4622970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vascular everting instrument
Assignee: Johns Hopkins University
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Filing: 1985-08-29
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Granted: 1986-11-18
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Expires: 2005-08-29
Abstract
Abstract The invention concerns a means having two instruments for everting an end of a severed artery over a ferrule surrounding the artery. A handle of a flaring instrument is squeezed to rotate a head section. Arms mounted to the head section open in the manner of an iris-diaphragm mechanism to flare the arterial end. Another instrument, curved forceps, urge the artery via the ferrule into the head section such that the arterial end is everted over the ferrule. Two everted arterial ends may be joined by sutureless vascular anastomosis.
Inventors
- 👤 John J. Wozniak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:34
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/11; A61B90/00
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
96 words
A means for everting an end of a tubular body member, including a first instrument having: a rotatable means for positioning adjacent the end of the tubular body member: a flaring means connected to the rotatable means, for flaring the tubular body member end; an actuation means, coupled for rotating the rotatable means such that the tubular body member is flared; and said flaring means engaging the tubular body member end whereby as said instrument is moved longitudinally along said tubular body member while said tubular body member end is flared, said end will be everted.
Claim 2
Dependent Claim
96 words
A means for everting an end of a tubular body member, including a first instrument having: a rotatable means for positioning adjacent the end of the tubular body member: a flaring means connected to the rotatable means, for flaring the tubular body member end; an actuation means, coupled for rotating the rotatable means such that the tubular body member is flared; and said flaring means engaging the tubular body member end whereby as said instrument is moved longitudinally along said tubular body member while said tubular body member end is flared, said end will be everted.
Claim 3
Dependent Claim
16 words
A means as in claim 1 including a stationary means upon which the rotatable means rotates.
Claim 4
Dependent Claim
13 words
A means as in claim 2, the rotatable means further comprising a spool.
Claim 5
Dependent Claim
23 words
A means as in claim 3, including a locking means which engages said spool limiting the degrees through which the rotatable means turns.
Claim 6
Dependent Claim
21 words
A means as in claim 4, including a plurality of arms positioned in the stationary means, and engaged by the spool.
Claim 7
Dependent Claim
19 words
A means as in claim 5, including a plurality of guides mounted upon the spool, which engage the arms.
Claim 8
Dependent Claim
25 words
A means as in claim 6, the plurality of arms including extensions substantially at right angles to the arms, which flare the tubular member end.
Claim 9
Dependent Claim
13 words
A means as in claim 7, each of the extensions having a barb.
Claim 10
Dependent Claim
20 words
A means as in claim 8, the spool having a flanged end to which the plurality of guides are mounted.
Claim 11
Dependent Claim
21 words
A means as in claim 9, the plurality of guide means comprising a plurality of hoops within which the arms slide.
Claim 12
Dependent Claim
23 words
A means as in claim 10, the locking means comprising a collar, the spool having a neck to which the collar is secured.
Claim 13
Dependent Claim
18 words
A means as in claim 11, the stationary means having a recess upon which the spool flange slides.
Claim 14
Dependent Claim
17 words
A means as in claim 12, including a cable means linking the actuation means to the spool.
Claim 15
Dependent Claim
20 words
A means as in claim 13, including an affixing means via which the cable is fixed to the actuation means.
Claim 16
Dependent Claim
19 words
A means as in claim 14, the stationry means having a first radial slot through which the cable passes.
Claim 17
Dependent Claim
19 words
A means as in claim 15, the stationary means having a second radial slot opposite the first radial slot.
Claim 18
Dependent Claim
18 words
A means as in claim 16, the spool including an annular groove in which the cable is recessed.
Claim 19
Dependent Claim
23 words
A means as in claim 17, the actuation means including a biasing spring means for biasing the actuation means towards a return position.
Claim 20
Dependent Claim
21 words
A means as in claim 18, including a brake means for preventing movement of the actuation means towards the return position.
Claim 21
Dependent Claim
28 words
A means as in claim 19, the actuation means including a connector arm attached to an end of the cable and to which the biasing spring is fastened.
Claim 22
Dependent Claim
19 words
A means as in claim 20, the actuation means including a gear which is engaged by the brake means.
Claim 23
Dependent Claim
25 words
A means as in claim 21, the brake means including a spring and a plunger means which is urged toward the gear by the spring.
Claim 24
Dependent Claim
26 words
A means as in claim 22, including a return spring means linked to the spool via the cable for biasing the arms to a closed position.
Claim 25
Dependent Claim
53 words
A means as in claim 23, the actuation means including a grip, and a lever means rotatably pinned to the connector arm for sliding the connector arm parallel to the grip as the lever means is closed towards the grip, the biasing spring means being fastened between the grip and the connector arm.
Claim 26
Dependent Claim
16 words
A means as in claim 24, including a channel joining the grip to the stationary means.
Claim 27
Dependent Claim
37 words
A means as in claim 25, including a second instrument comprising a guiding means for urging the tubular body member end towards the first instrument and into the spool bore, for everting the tubular body member end.
Claim 28
Dependent Claim
15 words
A means as in claim 26, the guiding means comprising curved forceps with two arms.
Claim 29
Dependent Claim
23 words
A means as in claim 27, the curved forceps having a pair of tined guide elements, one at an end of each arm.
References Cited (Backward Citations)
US2086371A
Cited
US2940452A
Cited
US3040748A
Cited
US3316914A
Cited
US3606888A
Cited
US3908662A
Cited
US4144631A
Cited
US4470415A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-17 | 1990-05-19 | 1990-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-17 | 1994-05-19 | 1994-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-17 | 1998-05-19 | 1998-11-18 | $7700.00 | Window Closed / Lapsed |