US4563180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High flow catheter for injecting fluids
Assignee: Medtronic Inc
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Filing: 1984-06-29
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Granted: 1986-01-07
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Expires: 2004-06-29
Abstract
Abstract There is disclosed a high flow catheter for injecting fluids into a mammalian body. The catheter has an inside diameter, a proximal end for attachment to a fluid source and a distal end for insertion into the body. The inside diameter of the catheter varies over its length from a minimum at the proximal end to a maximum at the distal end.
Inventors
- 👤 James E. Jervis
- 👤 Dennis A. Caponigro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:41
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0021; A61M25/0023; A61M25/0043; A61M25/0054
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
80 words
A catheter for injecting fluids into a mammalian body, the catheter having an inside diameter, a proximal end for attachment to a fluid source, and a distal end for insertion into the body; the inside diameter of the catheter varying over its length from a minimum at the proximal end to a maximum at the distal end, and having a wall thickness varying over its length from a maximum at the proximal end to a minimum at the distal end.
Claim 2
Dependent Claim
80 words
A catheter for injecting fluids into a mammalian body, the catheter having an inside diameter, a proximal end for attachment to a fluid source, and a distal end for insertion into the body; the inside diameter of the catheter varying over its length from a minimum at the proximal end to a maximum at the distal end, and having a wall thickness varying over its length from a maximum at the proximal end to a minimum at the distal end.
Claim 3
Dependent Claim
13 words
The catheter of claim 1 having a constant outside diameter over its length.
Claim 4
Dependent Claim
27 words
The catheter of claim 1 having an outside diameter varying over its length from a maximum at the proximal end to a minimum at the distal end.
Claim 5
Dependent Claim
14 words
The catheter of claim 1 wherein the inside diameter tapers toward the proximal end.
Claim 6
Dependent Claim
14 words
The catheter of claim 1 wherein the outside diameter tapers toward the distal end.
Claim 7
Dependent Claim
18 words
The catheter of claim 1 wherein the distal inside diameter is about 1.4 times the proximal inside diameter.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-06 | 1989-07-08 | 1990-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-06 | 1993-07-08 | 1994-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-06 | 1997-07-08 | 1998-01-07 | $7700.00 | Window Closed / Lapsed |