US3730186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable implantable artery-constricting device
Assignee: University of California
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Filing: 1971-03-05
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Granted: 1973-05-01
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Expires: 1991-03-05
Abstract
Abstract A device, completely implantable within the human body, for restricting the flow of blood through a major blood vessel, such as an artery, especially the pulmonary artery. An inflatable, flexible annulus, generally circular in shape but not a closed circle, has a non-distensible outer wall so that upon inflation all distention or expansion is inward. The device is placed around an artery or other blood vessel, and the ring may then be closed, as by suturing together preformed tabs attached to the annulus, or by suturing together the ends of an overlapping tape, for instance, to firmly hold the vessel. Upon inflation, inward distention of the inflatable annulus constricts the vessel, and flow of blood therethrough is accordingly restricted. Inflation and deflation are effected through a self-sealing hollow bulb and a non-distensible tube connecting the bulb to the interior of the inflatable annulus, pressure fluid being introduced into the bulb by a fine hypodermic needle. The device may be wholly contained within the patient''s body, and all surfaces thereof are of a substance, such as a medical elastomer, that is compatible with and resistant to the action of body fluids.
Inventors
- 👤 L Edmunds
- 👤 S Braley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:07
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/0208; A61B; A61B17/00; A61B17/12; A61B17/122; A61B17/132; A61B17/135; A61B2017/00535; A61B2017/00557; Y; Y10; Y10S; Y10S128/00; Y10S128/25
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
195 words
A totally implantable adjustable extravascular occluding band adapted to restrict flow of blood through an artery or other major blood vessel, including in combination: a flexible, inflatable annulus having an incomplete unclosed, generally circular shape, having two ends, each of which is closed, and having a hollow interior, a distensible inner wall, and a non-distensible outer wall, said inflatable annulus forming an artery-receiving space bounded by said inner wall, having a hollow interior and being adapted to penetration by a hypodermic needle, and comprising an upper chamber, a lower chamber, an impervious diaphragm separating said chambers, silicone rubber gel disposed in said upper chamber, shield means in said lower chamber to protect said lower chamber from penetration by a needle, said shield means being a metal sink having a bottom and a side wall, said sink fitting snugly within said lower chamber substantially covering the side wall and base of said chamber, and having an aperture in said bottom registering with the central passage of a flexible connecting tube, and a non-distensible flexible, twist-resistant tube having a central passage providing a conduit between the interior of said bulb and said hollow interior of said annulus.
Claim 2
Dependent Claim
195 words
A totally implantable adjustable extravascular occluding band adapted to restrict flow of blood through an artery or other major blood vessel, including in combination: a flexible, inflatable annulus having an incomplete unclosed, generally circular shape, having two ends, each of which is closed, and having a hollow interior, a distensible inner wall, and a non-distensible outer wall, said inflatable annulus forming an artery-receiving space bounded by said inner wall, having a hollow interior and being adapted to penetration by a hypodermic needle, and comprising an upper chamber, a lower chamber, an impervious diaphragm separating said chambers, silicone rubber gel disposed in said upper chamber, shield means in said lower chamber to protect said lower chamber from penetration by a needle, said shield means being a metal sink having a bottom and a side wall, said sink fitting snugly within said lower chamber substantially covering the side wall and base of said chamber, and having an aperture in said bottom registering with the central passage of a flexible connecting tube, and a non-distensible flexible, twist-resistant tube having a central passage providing a conduit between the interior of said bulb and said hollow interior of said annulus.
Claim 3
Dependent Claim
17 words
The band of claim 1 wherein said diaphragm extends to form an annular flange around said bulb.
Claim 4
Dependent Claim
10 words
The band of claim 1 wherein said metal is titanium.
Claim 5
Dependent Claim
17 words
The band of claim 1 having a baffle in said sink spaced from and protecting said aperture.
Claim 6
Dependent Claim
27 words
The band of claim 1 wherein said sink has an aperture of a plurality of small holes arranged in a pattern to register with said central passage.
Claim 7
Dependent Claim
163 words
In an adjustable occluding band adapted to be totally implanted in a human body and to restrict flow of blood through an artery or other major blood vessel, and comprising generally a flexible, inflatable, hollow annulus adapted to receive an artery or other major blood vessel, a needle-penetrable bulb and a non-distensible flexible tube connecting the interior of said annulus and the interior of said bulb, the improvement wherein said bulb is non-distensible and self-sealing and comprises an upper chamber, a lower chamber an impervious diaphragm separating said chambers, a shield means in said lower chamber to protect said lower chamber from puncture by a needle, said shield means being a metal sink having a bottom and a side wall, said sink fitting snugly within said lower chamber substantially covering said side wall and bottom of said chamber, and having an aperture in said bottom registering with the central passage of said flexible tube, and means to anchor said bulb within said body.
Claim 8
Dependent Claim
163 words
In an adjustable occluding band adapted to be totally implanted in a human body and to restrict flow of blood through an artery or other major blood vessel, and comprising generally a flexible, inflatable, hollow annulus adapted to receive an artery or other major blood vessel, a needle-penetrable bulb and a non-distensible flexible tube connecting the interior of said annulus and the interior of said bulb, the improvement wherein said bulb is non-distensible and self-sealing and comprises an upper chamber, a lower chamber an impervious diaphragm separating said chambers, a shield means in said lower chamber to protect said lower chamber from puncture by a needle, said shield means being a metal sink having a bottom and a side wall, said sink fitting snugly within said lower chamber substantially covering said side wall and bottom of said chamber, and having an aperture in said bottom registering with the central passage of said flexible tube, and means to anchor said bulb within said body.
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |