Patent US3795246A successfully refreshed from Google Patents.
US3795246A
Expired / Lapsed
US
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Venocclusion device
Assignee: CR Bard Inc
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Filing: 1973-01-26
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Granted: 1974-03-05
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Expires: 1993-01-26
Abstract
Abstract A device designed to be implanted in a blood vessel such as the inferior vena cava, as a substitute for a tying or clamping operation on such vessel, the device being inserted in deflated condition through a simple incision, moved to the desired location, inflated to engage securely the wall of the vessel and then detached from the inserting means. The device comprises a generally cylindrical core body containing one or more one-way valves and having around its outer surface an inflatable balloon, the device being initially mounted on and inserted by an elongated catheter traversed by a needle through which inflation fluid is fed to the balloon; withdrawal of the needle after inflation permits the valve or valves to close and simultaneously separates the device from the catheter.
Inventors
- 👤 J Sturgeon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:52
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12131; A61B17/12136; A61B17/12099; A61B17/12109
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
138 words
A blood vessel occluding device comprising, a rigid cylindrical body having distal and proximal ends and an axial bore, means closing the distal end of said bore, a valve seat spaced from said closing means, to define a valve compartment between said closing means and said seat, a valve movable in said compartment toward and away from said seat, a passage extending outward from said compartment through the body wall, resilient means urging said valve toward engagement with said seat, a mass of self-sealing material substantially filling said bore proximally of said valve seat, means at the proximal end of said body for retaining said mass in said bore, and a sheath of stretchable fluid-impervious material sealed to said body distally and proximally of said passage and adapted to be inflated to form a balloon around said body.
Claim 2
Dependent Claim
138 words
A blood vessel occluding device comprising, a rigid cylindrical body having distal and proximal ends and an axial bore, means closing the distal end of said bore, a valve seat spaced from said closing means, to define a valve compartment between said closing means and said seat, a valve movable in said compartment toward and away from said seat, a passage extending outward from said compartment through the body wall, resilient means urging said valve toward engagement with said seat, a mass of self-sealing material substantially filling said bore proximally of said valve seat, means at the proximal end of said body for retaining said mass in said bore, and a sheath of stretchable fluid-impervious material sealed to said body distally and proximally of said passage and adapted to be inflated to form a balloon around said body.
Claim 3
Dependent Claim
31 words
A blood vessel occluding device according to claim 1 which includes a ring engaging the distal end portion of the sheath to hold it in sealing contact with the body surface.
Claim 4
Dependent Claim
26 words
A blood vessel occluding device according to claim 2 which includes a smoothly rounded distal tip element adapted to hold thE ring in sheath engaging position.
Claim 5
Dependent Claim
30 words
A blood vessel occluding device according to claim 1 wherein the valve seat and the mass retaining means are traversed axially by openings to permit passage of an inflating needle.
Claim 6
Dependent Claim
132 words
In combination, the occluding device as claimed in claim 1 and a positioning device comprising an elongated flexible catheter, a fitting on the distal end of the catheter having a socket adapted to receive the proximal end of the body and an axial opening, an elongated needle having a bore and a distal end, the bore terminating distally in an opening adjacent said distal end, and means for moving said needle axially relative to said catheter, the occluding device being associated with the positioning device with the proximal end of the body seated in the socket and the needle passing through the mass of material and projecting distally therefrom sufficiently to hold the valve off its seat and provide communication between the distal opening in the needle and the outwardly extending passage.
Claim 7
Dependent Claim
31 words
The combination according to claim 5 wherein the outer surface of the fitting forms a smooth continuation of the outer surface of the catheter at the distal end of the latter.
Claim 8
Dependent Claim
32 words
The combination according to claim 5 wherein the outer surface of the fitting forms a smooth continuation of the outer surface of the balloon sheath at the proximal end of the latter.
Claim 9
Dependent Claim
56 words
The combination according to claim 5 wherein the needle moving means includes a fitting on the proximal end of the catheter and a separate base element, the needle having its proximal end connected to said base element and passing through said proximal catheter fitting, and said base element being adapted to rest against said latter fitting.
Claim 10
Dependent Claim
37 words
The combination according to claim 8 which includes a flanged bushing threaded to the proximal catheter fitting and adapted to be positioned to determine the axial position of the separate base element relative to said latter fitting.
Claim 11
Dependent Claim
21 words
The combination according to claim 8 which includes means preventing rotation of said base element relative to said proximal catheter fitting.
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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |