US5599576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical apparatus with scratch-resistant coating and method of making same
Assignee: Surface Solutions Laboratories Inc
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Filing: 1995-02-06
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Granted: 1997-02-04
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Expires: 2015-02-06
Abstract
Abstract A method for providing a medical apparatus with a protective surface coating is described. The method comprises applying to a medical apparatus a coating solution that contains a matrix polymer such as a urethane, and a reinforcing agent such as lamellar platelet and fiber additives, as micaceous pigments, flake pigments, tungsten powder and glass fiber, to increase the resistance of the medical apparatus to injury, such that the surface coating forms a protective, scratch- and puncture-resistant layer on the medical apparatus. The particles or fibers of the reinforcing agent may be oriented to provide the medical apparatus with additional resistance to injury. The coating is well suited to provide balloon catheters, particularly PET balloons, and the like with the toughness desirable for use in stent delivery and placement.
Inventors
- 👤 Margaret P. Opolski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:01
CPC Classifications
A; A61; A61L; A61L29/00; A61L29/12; A61L29/126; A61L29/08; A61L29/085; A61L29/14; A61L29/16; A61L2300/00; A61L2300/40; A61L2300/404; A61L2300/60; A61L2300/606
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
91 words
A method for providing a protective coating on a surface of a medical apparatus adapted for use within a patient, comprising: applying a coating solution to a surface of an implantable medical apparatus, such that a protective layer is formed upon the apparatus surface, wherein the coating solution comprises a matrix polymer which contains a reinforcing agent, the reinforcing agent having a higher surface hardness than the surface hardness of the medical apparatus, wherein a total coating thickness on the medical apparatus is no greater than about 3 mil (0.003 inch).
Claim 2
Independent Claim
91 words
A method for providing a protective coating on a surface of a medical apparatus adapted for use within a patient, comprising: applying a coating solution to a surface of an implantable medical apparatus, such that a protective layer is formed upon the apparatus surface, wherein the coating solution comprises a matrix polymer which contains a reinforcing agent, the reinforcing agent having a higher surface hardness than the surface hardness of the medical apparatus, wherein a total coating thickness on the medical apparatus is no greater than about 3 mil (0.003 inch).
Claim 3
Dependent Claim
37 words
A method for providing a protective coating on the surface of a medical apparatus in accordance with claim 1, wherein said protective layer has a thickness in the range of about 0.1 mil to about 3 mil.
Claim 4
Dependent Claim
27 words
A method for providing a providing a protective coating on a surface of a medical apparatus in accordance with claim 1, wherein the matrix polymer is urethane.
Claim 5
Dependent Claim
25 words
A method for providing a protective coating on a surface of a medical apparatus in accordance with claim 1, wherein the matrix polymer is epoxy.
Claim 6
Dependent Claim
33 words
A method for providing a providing a protective coating on a surface of a medical apparatus in accordance with claim 1, wherein the reinforcing agent of the coating solution comprises a lamellar material.
Claim 7
Dependent Claim
34 words
A method for providing a providing a protective coating on a surface of a medical apparatus in accordance with claim 5, wherein the lamellar reinforcing agent of the coating solution comprises a micaceous pigment.
Claim 8
Dependent Claim
32 words
A method for providing a providing a protective coating on a surface of a medical apparatus in accordance with claim 1, wherein the reinforcing agent of the coating solution comprises a fiber.
Claim 9
Dependent Claim
32 words
A method for providing a providing a protective coating on a surface of a medical apparatus in accordance with claim 7, wherein the fiber reinforcing agent of the coating solution comprises glass.
Claim 10
Dependent Claim
38 words
A method for providing a providing a protective coating on a surface of a medical apparatus in accordance with claim 1, wherein the reinforcing agent is selected from the group consisting of lamellar platelets, flake pigments and fibers.
Claim 11
Dependent Claim
31 words
A method for providing a protective coating on a surface of a medical apparatus in accordance with claim 1, further comprising applying a primer to the surface of the medical apparatus.
Claim 12
Dependent Claim
30 words
A method for providing a providing a protective coating on a surface of a medical apparatus in accordance with claim 1, wherein the coating solution further comprises a crosslinking agent.
Claim 13
Dependent Claim
22 words
A method for providing a protective coating on a medical apparatus in accordance with claim 11, wherein the crosslinking agent is aziridine.
Claim 14
Dependent Claim
26 words
A method for providing a protective coating on a surface of a medical apparatus in accordance with claim 1, wherein the medical apparatus comprises a catheter.
Claim 15
Dependent Claim
26 words
A method for providing a protective coating on a surface of a medical apparatus in accordance with claim 1, wherein the medical apparatus comprises a balloon.
Claim 16
Dependent Claim
37 words
A method for providing a protective coating on the surface of a medical apparatus in accordance with claim 1, wherein said protective layer has a thickness in the range of about 0.2 mil to about 2 mil.
Claim 17
Dependent Claim
37 words
A method for providing a protective coating on the surface of a medical apparatus in accordance with claim 1, wherein the step of applying a coating solution to the apparatus surface is performed two or more times.
Claim 18
Independent Claim
75 words
A method for providing a protective coating on the surface of an implantable medical apparatus adapted for use within a patient, comprising: applying a coating solution to a surface of the medical apparatus, the coating solution comprising a reinforcing agent, the reinforcing agent containing fibers, such that a protective coating is formed on the apparatus surface; and aligning the fibers on the surface of the medical apparatus in a direction parallel to the apparatus surface.
Claim 19
Independent Claim
75 words
A method for providing a protective coating on the surface of an implantable medical apparatus adapted for use within a patient, comprising: applying a coating solution to a surface of the medical apparatus, the coating solution comprising a reinforcing agent, the reinforcing agent containing fibers, such that a protective coating is formed on the apparatus surface; and aligning the fibers on the surface of the medical apparatus in a direction parallel to the apparatus surface.
Claim 20
Independent Claim
111 words
A method for providing a protective coating on the surface of an implantable medical apparatus adapted for use within a patient, comprising: applying a coating solution to a surface of the medical apparatus, such that a protective layer is formed upon the apparatus surface, such that a total coating thickness on the medical apparatus is no greater than about 3 mil, wherein the coating solution comprises a matrix polymer which contains a reinforcing agent, the reinforcing agent containing particles having a higher surface hardness than the surface hardness of the medical apparatus; and aligning the particles on the surface of the medical apparatus in a direction parallel to the apparatus surface.
Claim 21
Independent Claim
111 words
A method for providing a protective coating on the surface of an implantable medical apparatus adapted for use within a patient, comprising: applying a coating solution to a surface of the medical apparatus, such that a protective layer is formed upon the apparatus surface, such that a total coating thickness on the medical apparatus is no greater than about 3 mil, wherein the coating solution comprises a matrix polymer which contains a reinforcing agent, the reinforcing agent containing particles having a higher surface hardness than the surface hardness of the medical apparatus; and aligning the particles on the surface of the medical apparatus in a direction parallel to the apparatus surface.
Claim 22
Independent Claim
33 words
A method for providing a protective coating on the surface of a medical apparatus in accordance with any one of claims 1, 17 and 18, wherein said implantable medical apparatus is temporarily implantable.
References Cited (Backward Citations)
US3827115A
Cited
US3937990A
Cited
US4427823A
Cited
US4345058A
Cited
US4546018A
Cited
US4579882A
Cited
US4786453A
Cited
US5001008A
Cited
US4911718A
Cited
US5026607A
Cited
US5272012A
Cited
EP0480809A2
Cited
US5300558A
Cited
US5200263A
Cited
US5407612A
Cited
WO1993015781A1
Cited
US5474522A
Cited
US5338773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-02-04 | 2000-08-05 | 2001-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-02-04 | 2004-08-05 | 2005-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-02-04 | 2008-08-05 | 2009-02-04 | $7700.00 | Window Closed / Lapsed |