Patent EP0520296A1 successfully refreshed from Google Patents.
US4282875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Occlusive device
Assignee: Individual
•
Filing: 1979-01-24
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Granted: 1981-08-11
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Expires: 1999-01-24
Abstract
Abstract The proposed device for the occlusion of brain vessels comprises an occlusive bulb of an elastic material. Its thicker head portion accommodates a metal plug, while the tail portion contains a valve made of the material of the bulb itself, through which the tip of a catheter is introduced. The pear-shaped valve points inside the bulb, and its neck bears a spring element. When the bulb is drawn along an occluded vessel, with better maneuverability, the bulb's cavity is more reliably sealed after the catheter has been detached therefrom.
Inventors
- 👤 Fedor A. Serbinenko
- 👤 Sergei I. Kljuchnikov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:33
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/20; A61F6/22; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12099; A61B17/12109; A61B17/12131; A61B17/12136
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
176 words
An occlusive device for use in plugging blood vessels of the brain, comprising: an elastic catheter having a distal tip with an opening therethrough, said distal tip having a thin walled elastic bulb releasably mounted thereon, said bulb having a thick spherical head portion accommodating a metal plug which provides means to dampen vibrations caused by the flow of blood, and a thick spherical tail portion containing a self-closing aperture surrounding and housing said distal tip of said catheter, wherein said aperture functions as a valve which closes upon removal of the distal tip of said catheter from the elastic bulb; said distal tip of the catheter having connecting or coupling enlargement means thereon which extends through the tail portion and which internally secures the tip within the bulb cavity said enlargement means adapted to prevent detachment of the tip from the bulb by the flow of blood; and wherein the opening in the distal tip of the catheter is relatively smaller in diameter and has a greater elasticity than the main body of the catheter.
Claim 2
Dependent Claim
176 words
An occlusive device for use in plugging blood vessels of the brain, comprising: an elastic catheter having a distal tip with an opening therethrough, said distal tip having a thin walled elastic bulb releasably mounted thereon, said bulb having a thick spherical head portion accommodating a metal plug which provides means to dampen vibrations caused by the flow of blood, and a thick spherical tail portion containing a self-closing aperture surrounding and housing said distal tip of said catheter, wherein said aperture functions as a valve which closes upon removal of the distal tip of said catheter from the elastic bulb; said distal tip of the catheter having connecting or coupling enlargement means thereon which extends through the tail portion and which internally secures the tip within the bulb cavity said enlargement means adapted to prevent detachment of the tip from the bulb by the flow of blood; and wherein the opening in the distal tip of the catheter is relatively smaller in diameter and has a greater elasticity than the main body of the catheter.
Claim 3
Dependent Claim
57 words
An occlusive device as claimed in claim 1, wherein the aperture-valve has a pear-shaped body with a central, longitudinal, self-closing canal directed towards the bulb cavity, which accommodates the introduction of the catheter, and clamping means on the neck of the pear-shaped valve, which, upon removal of the catheter, compress the neck and close the pear-shaped valve.
Claim 4
Dependent Claim
22 words
An occlusive device as claimed in claim 1, wherein the end of the distal tip of the catheter, is spherical in shape.
Claim 5
Dependent Claim
22 words
An occlusive device as claimed in claim 1, wherein the bulb is made of latex, and the catheter is made of polyethylene.
Claim 6
Dependent Claim
15 words
An occlusive device as claimed in claim 1, wherein the metal plug is x-ray detectable.
Claim 7
Dependent Claim
18 words
An occlusive device as claimed in claim 1, wherein said clamping means consist of a compressed spring element.
Claim 8
Dependent Claim
20 words
An occlusive device as claimed in claim 1, wherein said bulb contains a filler medium compatible to the human organism.
Claim 9
Dependent Claim
14 words
An occlusive device as claimed in claim 1, wherein the aperture-valve is a sphincter.
Claim 10
Dependent Claim
199 words
An occlusive device for use in plugging blood vessels of the brain, comprising: an elastic catheter having a distal tip with an opening therethrough, said distal tip having a thin walled elastic bulb releasably mounted thereon, said bulb having a thick spherical head portion accommodating a metal plug which provides means to dampen vibrations caused by the flow of blood, and a thick spherical tail portion containing a self-closing aperture surrounding and housing said distal tip of said catheter, wherein said aperture functions as a valve which closes upon removal of the distal tip of said catheter from the elastic bulb; said valve aperture having a pear-shaped body with a central, longitudinally self-closing canal directed towards the bulb cavity, which accommodates the introduction of the catheter, and connecting or coupling means on the neck of the pear-shaped valve, which upon removal of the catheter, compress the neck and close said pear-shaped valve; the distal tip of said catheter thereby being prevented from detaching from the bulb by the flow of blood; and wherein the opening in the distal tip of the catheter is relatively smaller in diameter and has a greater elasticity than the main body of the catheter.
Claim 11
Dependent Claim
199 words
An occlusive device for use in plugging blood vessels of the brain, comprising: an elastic catheter having a distal tip with an opening therethrough, said distal tip having a thin walled elastic bulb releasably mounted thereon, said bulb having a thick spherical head portion accommodating a metal plug which provides means to dampen vibrations caused by the flow of blood, and a thick spherical tail portion containing a self-closing aperture surrounding and housing said distal tip of said catheter, wherein said aperture functions as a valve which closes upon removal of the distal tip of said catheter from the elastic bulb; said valve aperture having a pear-shaped body with a central, longitudinally self-closing canal directed towards the bulb cavity, which accommodates the introduction of the catheter, and connecting or coupling means on the neck of the pear-shaped valve, which upon removal of the catheter, compress the neck and close said pear-shaped valve; the distal tip of said catheter thereby being prevented from detaching from the bulb by the flow of blood; and wherein the opening in the distal tip of the catheter is relatively smaller in diameter and has a greater elasticity than the main body of the catheter.
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) | 1984-08-10 | 1985-02-09 | 1985-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-10 | 1989-02-09 | 1989-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-10 | 1993-02-09 | 1993-08-11 | $7700.00 | Window Closed / Lapsed |