Patent US4787892A successfully refreshed from Google Patents.
US4787892A
Expired / Lapsed
US
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Nephrostomy catheter with formed tip
Assignee: Kendall Co
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Filing: 1988-01-04
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Granted: 1988-11-29
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Expires: 2008-01-04
Abstract
Abstract A nephrostomy catheter comprising, an elongated shaft having a drainage lumen extending along the shaft and a distal end, and a formed tip bonded to the distal end of the shaft and having a distal opening communicating with the lumen to receive a guide wire.
Inventors
- 👤 Helmut W. G. Rosenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:24
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
124 words
A nephrostomy catheter assembly, comprising: an elongated shaft having a drainage lumen extending through the shaft, a distal end and an inflatable sleeve adjacent the distal end and attached to the shaft, and means for inflating the sleeve; a formed tip bonded to a distal end of the shaft and having a distal opening communicating with the lumen to receive a guide wire, said tip defining an inner flat shoulder; a hollow elongated stylet removably received in the drainage lumen of the catheter with a distal end defining a distal edge of the stylet engaging against the tip shoulder without passing through the opening; and an elongated guide wire received in and in direct contact with the stylet and passing through the tip opening.
Claim 2
Dependent Claim
124 words
A nephrostomy catheter assembly, comprising: an elongated shaft having a drainage lumen extending through the shaft, a distal end and an inflatable sleeve adjacent the distal end and attached to the shaft, and means for inflating the sleeve; a formed tip bonded to a distal end of the shaft and having a distal opening communicating with the lumen to receive a guide wire, said tip defining an inner flat shoulder; a hollow elongated stylet removably received in the drainage lumen of the catheter with a distal end defining a distal edge of the stylet engaging against the tip shoulder without passing through the opening; and an elongated guide wire received in and in direct contact with the stylet and passing through the tip opening.
Claim 3
Dependent Claim
32 words
The catheter of claim 1 wherein the tip has at least one drainage eye intermediate the opening and a proximal end of the tip, said drainage eye communicating with the drainage lumen.
Claim 4
Dependent Claim
10 words
The catheter of claim 1 wherein the tip is radiopaque.
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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) | 1991-11-29 | 1992-05-30 | 1992-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-29 | 1996-05-30 | 1996-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-29 | 2000-05-30 | 2000-11-29 | $7700.00 | Window Closed / Lapsed |