US3741214A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Varicer bougie
Assignee: ASTRA-SJUCO AB
•
Filing: 1971-01-15
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Granted: 1973-06-26
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Expires: 1991-01-15
Abstract
Abstract A disposable varicer bougie comprising a flexible and tensile strength wire-like device having vein stripping means affixed to its rear end. The wire-like device has a front end which is helically shaped, preferably with a specified pitch, and preferably terminating in a tapered portion.
Inventors
- 👤 H Tillander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:57
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/00008
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
97 words
A disposable varicer bougie comprising a flexible and tensile strength wire-like device having a front-end, a rear-end and vein stripping means comprising an enlarged member (2) of a size larger than the vein fixedly attached to said rear-end, said front end (3) being formed in the shape of a single permanent spiral, helically shaped and terminating at an enlarged tip (4) in a single straight section extending forwardly from the spiral, whereby the front end (3) finds its way through a winding passage of a varicosed vein as the bougie is rotated about its axis during insertion.
Claim 2
Dependent Claim
97 words
A disposable varicer bougie comprising a flexible and tensile strength wire-like device having a front-end, a rear-end and vein stripping means comprising an enlarged member (2) of a size larger than the vein fixedly attached to said rear-end, said front end (3) being formed in the shape of a single permanent spiral, helically shaped and terminating at an enlarged tip (4) in a single straight section extending forwardly from the spiral, whereby the front end (3) finds its way through a winding passage of a varicosed vein as the bougie is rotated about its axis during insertion.
Claim 3
Dependent Claim
27 words
A varicer bougie according to claim 1, in which the helix at the front end (3) has a maximum pitch of three-fourths of a turn per cm.
Claim 4
Dependent Claim
18 words
A varicer bougie according to claim 2, in which the pitch is one-fourth of a turn per cm.
Claim 5
Dependent Claim
16 words
A varicer bougie according to claim 5, in which the spiral tapers conically towards the tip.
Claim 6
Dependent Claim
23 words
A varicer bougie according to claim 1, in which the wire-like device has a smooth external surface formed of a homogeneous plastic material.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |