Patent US1674038A successfully refreshed from Google Patents.
Patent US5496294A successfully refreshed from Google Patents.
US5496294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter with kink-resistant distal tip
Assignee: Target Therapeutics Inc
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Filing: 1994-07-08
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Granted: 1996-03-05
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Expires: 2014-07-08
Abstract
Abstract This invention is a surgical device. In particular, it is a catheter suitable for treating a tissue target within the body, which target is accessible through the vascular system. Central to the invention is the use of a multi-component distal section having an interior stiffener and an exterior tubing member.
Inventors
- 👤 Robert Hergenrother
- 👤 June Lim
- 👤 Roger Farnholtz
- 👤 Kim Nguyen
- 👤 Edward Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:42
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0067; A61M25/008; A61M25/0043; A61M25/005; A61M25/0052; A61M25/0054
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
83 words
A catheter section comprising: an elongate tubular member having a proximal end and a distal end and a passageway defining an inner lumen extending between those ends, the distal end of the elongate tubular member comprising: a.) an inner stiffener liner of a first liner material in coaxial relationship with an outer tubular cover, b.) an outer tubular cover comprising a polyethylene blend containing at least 12% EVA, and c.) at least a distal radiopaque marker located distally of said inner stiffener liner.
Claim 2
Dependent Claim
83 words
A catheter section comprising: an elongate tubular member having a proximal end and a distal end and a passageway defining an inner lumen extending between those ends, the distal end of the elongate tubular member comprising: a.) an inner stiffener liner of a first liner material in coaxial relationship with an outer tubular cover, b.) an outer tubular cover comprising a polyethylene blend containing at least 12% EVA, and c.) at least a distal radiopaque marker located distally of said inner stiffener liner.
Claim 3
Dependent Claim
13 words
The catheter section of claim 1 wherein the inner liner material comprises polyethylene.
Claim 4
Dependent Claim
24 words
The catheter section of claim 1 wherein the section has a lateral flexibility measured as a deflection force of no more than 3.0 gm.
Claim 5
Dependent Claim
24 words
The catheter section of claim 3 wherein the section has a lateral flexibility measured as a deflection force of no more than 2.2 gm.
Claim 6
Dependent Claim
23 words
The catheter section of claim 1 where the liner material and cover material are radiation sterilizable without substantial degradation of their physical attributes.
Claim 7
Dependent Claim
18 words
The catheter section of claim 1 where at least one of the liner and cover materials are radiopaque.
Claim 8
Dependent Claim
85 words
A catheter section comprising: an elongate tubular member having a proximal end and a distal end and a passageway defining an inner lumen extending between those ends, the distal end of the elongate tubular member comprising: a.) an inner stiffener liner of a first liner material comprising a helically wound metallic ribbon stiffener in coaxial relationship with an outer tubular cover, b.) an outer tubular cover comprising a cover material, and c.) at least a distal radiopaque marker located distally of said inner stiffener liner.
Claim 9
Dependent Claim
85 words
A catheter section comprising: an elongate tubular member having a proximal end and a distal end and a passageway defining an inner lumen extending between those ends, the distal end of the elongate tubular member comprising: a.) an inner stiffener liner of a first liner material comprising a helically wound metallic ribbon stiffener in coaxial relationship with an outer tubular cover, b.) an outer tubular cover comprising a cover material, and c.) at least a distal radiopaque marker located distally of said inner stiffener liner.
Claim 10
Dependent Claim
15 words
The catheter section of claim 7 wherein the inner stiffener liner comprises a superelastic alloy.
Claim 11
Dependent Claim
12 words
The catheter section of claim 8 wherein the superelastic alloy is nitinol.
Claim 12
Dependent Claim
20 words
The catheter section of claim 9 wherein the outer cover material comprises a polyethylene blend containing at least 12% EVA.
Claim 13
Dependent Claim
24 words
The catheter section of claim 7 wherein the section has a lateral flexibility measured as a deflection force of no more than 3.0 gm.
Claim 14
Dependent Claim
24 words
The catheter section of claim 11 wherein the section has a lateral flexibility measured as a deflection force of no more than 2.2 gm.
Claim 15
Dependent Claim
30 words
The catheter section of claim 8 where the ribbon stiffener comprises a ribbon having a thickness between 0.5 mil and 1.0 mil and a width between 2.5 and 8.0 mil.
Claim 16
Dependent Claim
24 words
The catheter section of claim 7 wherein the section has a lateral flexibility measured as a deflection force of no more than 3.0 gm.
Claim 17
Dependent Claim
24 words
The catheter section of claim 14 wherein the section has a lateral flexibility measured as a deflection force of no more than 2.2 gm.
Claim 18
Dependent Claim
18 words
The catheter section of claim 14 where at least one of the liner and cover materials are 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) | 1999-03-05 | 1999-09-04 | 2000-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-03-05 | 2003-09-04 | 2004-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-03-05 | 2007-09-04 | 2008-03-05 | $7700.00 | Window Closed / Lapsed |