US4168708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blood vessel occlusion means suitable for use in anastomosis
Assignee: Medical Engineering Corp
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Filing: 1977-04-20
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Granted: 1979-09-25
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Expires: 1997-04-20
Abstract
Abstract A T-shaped blood vessel occluder has a stem with a pair of opposing arms at one end forming a bar. Generally conically shaped solid bulbs are connected to the extremities of the bar. The occluder is insertable through an incision in the blood vessel with the arms and bulbs extending in opposite directions along the vessel. A section of the blood vessel is thus sealed off at both ends for anastomosis for other purposes.
Inventors
- 👤 Derward Lepley, Jr.
- 👤 Donald C. Mullen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:12
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/11; A61B17/12027; A61B17/1204; A61B17/12045; A61B17/12099; A61B17/12109; A61B17/12131; A61B17/12136; A61B17/12159; A61B2017/1107; A61B2017/1135; A61B2017/12127
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
178 words
An occluder adapted to be inserted and removed through an incision in a blood vessel to temporarily seal off a section of said blood vessel which includes the incision, said occluder including: means for assisting the placement of the occluder in the blood vessel, said means comprising a relatively rigid, elongated stem having a pair of ends; a pair of flexible arms forming a bar having a central portion thereof connected at one end of said stem, said arms having a diameter smaller than the normal diameter of the blood vessel to be occluded; and a pair of non-inflatable, generally conical bulbs, each of said bulbs being connected at its base to a respective end of said bar, said bulbs having a diameter which is larger than that of the arms and the blood vessel and sufficient hardness to form fluid tight seals with the wall of the blood vessel without dislodging any sclerotic plaque which may be present in the blood vessel, the conical portions of said bulbs being imperforate surfaces to prevent any fluid passage therethrough.
Claim 2
Dependent Claim
178 words
An occluder adapted to be inserted and removed through an incision in a blood vessel to temporarily seal off a section of said blood vessel which includes the incision, said occluder including: means for assisting the placement of the occluder in the blood vessel, said means comprising a relatively rigid, elongated stem having a pair of ends; a pair of flexible arms forming a bar having a central portion thereof connected at one end of said stem, said arms having a diameter smaller than the normal diameter of the blood vessel to be occluded; and a pair of non-inflatable, generally conical bulbs, each of said bulbs being connected at its base to a respective end of said bar, said bulbs having a diameter which is larger than that of the arms and the blood vessel and sufficient hardness to form fluid tight seals with the wall of the blood vessel without dislodging any sclerotic plaque which may be present in the blood vessel, the conical portions of said bulbs being imperforate surfaces to prevent any fluid passage therethrough.
Claim 3
Dependent Claim
21 words
The occluder of claim 1 in which the bulbs have a Shore A durometer hardness of about 35 to about 60.
Claim 4
Dependent Claim
31 words
The occluder of claim 1 in which the stem and bar provide a generally T-shaped configuration to said occluder and space said bulbs in a direction generally normal to said stem.
Claim 5
Dependent Claim
16 words
The occluder according to claim 1 wherein the bulbs are formed of a physiologically inert material.
Claim 6
Dependent Claim
14 words
The occluder according to claim 1 wherein the bulbs are formed of silicone rubber.
Claim 7
Dependent Claim
19 words
The occluder according to claim 1 wherein the other end of the stem provides a tab suitable for grasping.
Claim 8
Dependent Claim
32 words
The occluder of claim 1 wherein the bar is of sufficient stiffness to resist the displacement of said bulbs by fluid pressure in the blood vessel once the occluder is in position.
References Cited (Backward Citations)
US3095877A
Cited
US3392922A
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US3834394A
Cited
US3768102A
Cited
US3815578A
Cited
US3889685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-24 | 1983-03-26 | 1983-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-24 | 1987-03-26 | 1987-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-24 | 1991-03-26 | 1991-09-25 | $7700.00 | Window Closed / Lapsed |