Patent EP0303487A2 successfully refreshed from Google Patents.
EP0303487A2
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EP
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Soft tip catheter
Assignee: CR Bard Inc
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Filing: 1988-08-11
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Granted: —
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Expires: 2008-08-11
Abstract
Abstract A guide catheter having a tubular body (10) with a wire-braided Teflon core (16) and a polyurethane jacket (18). The distal end of the jacket (18) is removed from the core (16), and a soft polyurethane tip (12) is applied to the core (16) over the region where the jacket (18) has been removed. The tip (12) overlaps the core (16) for approximately two millimeters and extends distally approximately two millimeters beyond the distal end of the core (16). The tip (12) may be applied to the core (16) as a separate tube bonded to it or be built up on the core by repeatedly dipping the top in a polyurethane slurry, or be molded onto the distal end of the core (16).
Inventors
- 👤 Richard M. Demello
- 👤 Robert J. Ham
- 👤 Michael F. Lang
- 👤 Gerry D. Ouellette
- 👤 Andrea T. Slater
- 👤 Frederick W. Trombley Iii
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 21:50
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; A61M25/001; A61L; A61L29/00; A61L29/04; A61L29/041; A61L29/08; A61L29/085; A61M25/0067; A61M25/0068; A61M25/0069; A61M25/008; B; B29; B29C; B29C41/00; B29C41/02; B29C41/20; B29C57/00; B29C65/00; B29C65/02; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C66/12; B29C66/122; B29C66/1222; B29C66/1224; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5344; B29C66/70; B29C66/72; B29C66/723; B29C70/00; B29C70/68; B29C70/74; B29C70/76; A61M2025/0081; A61M25/0012; A61M25/0043; A61M25/005; A61M25/01; A61M25/0105; A61M25/0108; B29C2793/00; B29C2793/0081; B29C41/14; B29C66/71; B29L; B29L2031/00; B29L2031/753; B29L2031/7542
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
80 words
An intravascular catheter comprising a main tubular body having distal and proximal ends, a step provided at the distal end of the body forming a section of reduced diameter extending to the distal end of the body, and a tip made of a material which is softer than the material of the body, secured to and overlapping the section of reduced diameter and secured to the step in the body, said tip extending distally beyond the end of the body.
Claim 2
Dependent Claim
80 words
An intravascular catheter comprising a main tubular body having distal and proximal ends, a step provided at the distal end of the body forming a section of reduced diameter extending to the distal end of the body, and a tip made of a material which is softer than the material of the body, secured to and overlapping the section of reduced diameter and secured to the step in the body, said tip extending distally beyond the end of the body.
Claim 3
Dependent Claim
18 words
A catheter as defined in claim 1 wherein the tip has a Durometer in the order of 85A.
Claim 4
Dependent Claim
20 words
A catheter as defined in claim 1 wherein the tip overlaps the section of reduced diameter by approximately two millimeters.
Claim 5
Dependent Claim
21 words
A catheter as defined in claim 1 wherein the tip extends distally approximately two millimeters beyond the end of the body.
Claim 6
Dependent Claim
23 words
A catheter as defined in claim 4 wherein the outer diameter of the tip is substantially the same as that of the body.
Claim 7
Dependent Claim
79 words
An intravascular catheter as defined in claim 1 further comprising the main tubular body having a relatively stiff core and a smooth outer jacket, said core extending distally beyond the end of the jacket, the tip made of a material which is softer than the material of the jacket secured to and overlapping the distal end of the core and secured to the distal end of the jacket, said tip extending distally beyond the distal end of the core.
Claim 8
Dependent Claim
19 words
A catheter as defined in claim 6 wherein a marker band is sandwiched between the tip and the core.
Claim 9
Dependent Claim
25 words
A catheter as defined in claim 6 wherein the core is made of a wire-braided material and the jacket and tip are made of polyurethane.
Claim 10
Dependent Claim
16 words
A catheter as defined in claim 6 wherein the tip has a Durometer of approximately 85A.
Claim 11
Dependent Claim
16 words
A catheter as defined in claim 9 wherein the jacket has a Durometer of approximately 55D.
Claim 12
Dependent Claim
48 words
A catheter as defined in claim 6 wherein the catheter comprises a guide catheter and further comprises: a core being formed from relatively hard wire braided Teflon, the outer jacket being formed from polyurethane, said tubular body having proximal and distal ends; the tip being formed from polyurethane.
Claim 13
Dependent Claim
28 words
A guide catheter as defined in claim 11 wherein the diameter of the end portion is reduced by the absence of the polyurethane outer jacket from the core.
Claim 14
Dependent Claim
25 words
A guide catheter as defined in claim 11 wherein the relatively soft polyurethane tip includes a plurality of layers deposited one on top of another.
Claim 15
Dependent Claim
25 words
A guide catheter as defined in claim 12 wherein the relatively soft polyurethane tip includes a plurality of layers deposited one on top of another.
Claim 16
Dependent Claim
24 words
A guide catheter as defined in claim 11 wherein the relatively soft polyurethane tip is injection molded over the end portion of the body.
Claim 17
Dependent Claim
24 words
A guide catheter as defined in claim 12 wherein the relatively soft polyurethane tip is injection molded over the end portion of the body.
Claim 18
Dependent Claim
21 words
A guide catheter as defined in claim 11 wherein the tip overlaps the distal end of the body approximately two millimeters.
Claim 19
Dependent Claim
23 words
A guide catheter as defined in claim 11 wherein the tip extends distally approximately two millimeters beyond the distal end of the core.
Claim 20
Independent Claim
87 words
A method of making an intravascular catheter comprising the steps of providing a main tubular body having a wire-braided core and softer outer jacket, removing the jacket from the distal end of the body, providing a tubular tip of a material softer than the jacket and forcing its proximal end over the distal end of the body where the jacket has been removed and with the distal end of the tip extending distally beyond the distal end of the body, and securing the tubular tip in position.
Claim 21
Independent Claim
87 words
A method of making an intravascular catheter comprising the steps of providing a main tubular body having a wire-braided core and softer outer jacket, removing the jacket from the distal end of the body, providing a tubular tip of a material softer than the jacket and forcing its proximal end over the distal end of the body where the jacket has been removed and with the distal end of the tip extending distally beyond the distal end of the body, and securing the tubular tip in position.
Claim 22
Dependent Claim
26 words
A catheter as defined in claim 19 wherein the tip has a Durometer in the order of 85A and overlaps the body by approximately two millimeters.
Claim 23
Dependent Claim
20 words
A catheter as defined in claim 20 wherein the tip extends distally beyond the distal end of the tubular body.
Claim 24
Dependent Claim
89 words
A method of making an intravascular catheter as defined in claim 19 further comprising said step of providing a tubular tip comprising: providing a main tubular body with a step at its distal end to establish a distal section of reduced diameter, providing a slurry of soft plastic material and repeatedly dipping the distal end of the body into the slurry to build up a tip on the body of a material softer than the material of the body and which extends beyond the distal end of the body.
Claim 25
Dependent Claim
24 words
A method as defined in claim 22 and further forming radii on the distal end of the tip at the inner and outer diameters.
Claim 26
Dependent Claim
70 words
A method as defined in claim 19 further comprising: said step of providing a tubular tip comprising: providing a mold having a cavity in the shape of a catheter tip, inserting the distal end section of the body into the cavity, and introducing a plastic material into the cavity which is softer than the material of the body to mold a soft tip onto the distal end of the body.
Claim 27
Dependent Claim
19 words
A method as defined in claim 22 wherein the Durometer of the material of the tip is approximately 85A.
Claim 28
Dependent Claim
19 words
A method as defined in claim 24 wherein the Durometer of the material of the tip is approximately 85A.
Claim 29
Dependent Claim
105 words
A method as defined in claim 22 further comprising: said step of providing a main tubular body comprising the steps of: providing a main tubular body having a wire-braided core and softer outer jacket, removing the jacket from the distal end of the body, said step of providing a tubular tip comprising: providing a tubular tip of a material softer than the jacket and forcing its proximal end over the distal end of the body where the jacket has been removed and with the distal end of the tip extending distally beyond the distal end of the body, and securing the tubular tip in position.
Claim 30
Dependent Claim
32 words
A method as defined in claim 27, and further providing a marker band and mounting the band on the core adjacent the distal end of the jacket and under the tubular tip.
Claim 31
Dependent Claim
31 words
A method as defined in claim 27 and further forming radii at the inner and outer diameters of the distal end of the tip after it is secured to the body.
Claim 32
Dependent Claim
30 words
A method as defined in claim 27 and further applying a antithrombogenic coating to the catheter body and the tip proximally of approximately the last two millimeters of the tip.
Claim 33
Dependent Claim
52 words
A method as defined in claim 27 and further placing a heat shrink film over the proximal portion of the tubular tip and distal end of the jacket of the core, and heating the distal end of the assembly of body, tip, and shrink film to bond the tip to the core.
Claim 34
Dependent Claim
32 words
A method as defined in claim 31 and further providing a marker band and mounting the band on the core adjacent the distal end of the jacket and under the tubular tip.
References Cited (Backward Citations)
No citation records indexed.
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