US5725513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin wall catheter with reinforcing sleeve
Assignee: Boston Scientific Scimed Inc
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Filing: 1997-02-03
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Granted: 1998-03-10
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Expires: 2017-02-03
Abstract
Abstract A diagnostic catheter comprises an inner layer of substantially unmodified polyamide over which is a reinforcing means and an outer layer of polymer having a hardness of 50 Shore D to 70 Shore D, along with a suitable radiopaque filler. Affixed either directly to the end of the above tubular body or to a stem member secured to that tubular body is a soft-tip formed from a blend of PEBA whose hardness is such that the catheter can be considered as having an atraumatic tip. The resulting catheter exhibits excellent torque and column strength characteristics while providing a relatively large diameter lumen for a given outside diameter.
Inventors
- 👤 Byung H. Ju
- 👤 Michael G. O'Connor
- 👤 Eric M. Lovgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:28
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0043; A61M25/0045; A61L; A61L29/00; A61L29/04; A61L29/049; A61L29/06; A61L29/14; A61L29/18; A61M25/005; A61M2025/0098; A61M25/0067; A61M25/0068; A61M25/0069
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
81 words
An intravascular catheter comprising: an elongated tubular body having a proximal end, a distal end and a lumen extending therebetween, the tubular body comprising: (a) an inner layer consisting essentially of an unmodified polyamide polymer; (b) a reinforcing means at least partially surrounding the inner layer; and (c) an outer polymeric layer having a predetermined durometer hardness in the range of from about 50 Shore D to about 75 Shore D, the outer layer at least partially covering said reinforcing means.
Claim 2
Dependent Claim
81 words
An intravascular catheter comprising: an elongated tubular body having a proximal end, a distal end and a lumen extending therebetween, the tubular body comprising: (a) an inner layer consisting essentially of an unmodified polyamide polymer; (b) a reinforcing means at least partially surrounding the inner layer; and (c) an outer polymeric layer having a predetermined durometer hardness in the range of from about 50 Shore D to about 75 Shore D, the outer layer at least partially covering said reinforcing means.
Claim 3
Dependent Claim
41 words
The intravascular catheter of claim 1 and further including an annular soft-tip member bonded to the distal end of the tubular body member, the soft-tip member comprising a blend of resins and having a hardness less than about 45, Shore D.
Claim 4
Dependent Claim
17 words
The intravascular catheter of claim 1 wherein the inner layer is of a 100 percent polyamide polymer.
Claim 5
Dependent Claim
28 words
The intravascular catheter of claim 3 wherein the inner layer has a wall thickness in the range of from about 0.001 to 0.008 inches (0.0025 to 0.0203 cm).
Claim 6
Dependent Claim
16 words
The intravascular catheter of claim 4 wherein the wall thickness is about 0.0025 inches (0.0064 cm).
Claim 7
Dependent Claim
20 words
The intravascular catheter of claim 1 wherein the reinforcing means is totally embedded between the inner layer and outer layer.
Claim 8
Dependent Claim
16 words
The intravascular catheter of claim 1 wherein the outer layer further comprises a radiopaque filler material.
Claim 9
Dependent Claim
23 words
The intravascular catheter of claim 1 wherein the outer layer is a blend of Nylon-12 polyamide, polyether block amide, and a radiopaque filler.
Claim 10
Dependent Claim
49 words
The intravascular catheter of claim 1 wherein the lumen is of a diameter in the range of from about 0.026 to 0.080 inch (0.066 to 0.203 cm) and the outer layer has an outer diameter in the range of from about 0.039 to 0.110 inch (0.099 to 0.279 cm).
Claim 11
Dependent Claim
49 words
The intravascular catheter of claim 8 wherein the lumen is of a diameter in the range of from about 0.026 to 0.080 inch (0.066 to 0.203 cm) and the outer layer has an outer diameter in the range of from about 0.039 to 0.110 inch (0.099 to 0.279 cm).
Claim 12
Dependent Claim
32 words
The intravascular catheter of claim 8 wherein the blend comprises 19.3% by weight polyamide, 44.5% by weight PEBA, 36% by weight BaSO 4 radiopaque filler and 0.2% by weight of a pigment.
Claim 13
Dependent Claim
32 words
The intravascular catheter of claim 1 wherein the outer layer includes a polyether block amide (PEBA) of a predetermined hardness in the range of from about 50 Shore to 75 Shore D.
Claim 14
Dependent Claim
33 words
The intravascular catheter of claim 1 wherein the outer layer is a blend comprising 63.8% by weight 72D PEBA, 36% by weight BaSO 4 radiopaque filler and 0.2% by weight of a pigment.
Claim 15
Dependent Claim
42 words
The intravascular catheter of claim 1 wherein said reinforcing means is a braided metal sleeve configuration of filaments and said sleeve extends from said proximal portion of the tubular body toward the distal portion of the tubular body by a predetermined distance.
Claim 16
Dependent Claim
25 words
The intravascular catheter of claim 1 wherein said reinforcing means is a perforated metal tube or a metal tube made of a shape memory alloy.
Claim 17
Dependent Claim
21 words
The intravascular catheter of claim 1 wherein said reinforcing means comprises a polymer forming a mesh, a tube, or a fabric.
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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) | 2001-03-09 | 2001-09-08 | 2002-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-09 | 2005-09-08 | 2006-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-09 | 2009-09-08 | 2010-03-10 | $7700.00 | Window Closed / Lapsed |