Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Reexamination Certificate
1998-03-12
2001-03-13
Kennedy, Sharon (Department: 3763)
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
C604S104000, C428S037000
Reexamination Certificate
active
06200290
ABSTRACT:
BACKGROUND OF THE INVENTION
I. Field of the Invention
The present invention is generally directed to dilatation balloons containing polyesteretheramide copolymer.
II. Related Art
The use of balloon catheters for coronary angioplasty is known in the art. In an angioplasty procedure, a partially occluded blood vessel, i.e., one containing a stenosis, is treated by the use of an expanding balloon member which presses the stenosis back against the vessel wall. Typically, the expander member or balloon is carried on the distal end of a dilatation catheter which is routed through the vascular system to a location within, for example, a coronary artery containing a stenotic lesion. Following placement of the expander member across the lesion as desired, fluid is introduced into the proximal end of the catheter to inflate the expander member to a relatively high pressure, thereby restoring patency to the vessel. Coronary angioplasty procedures and angioplasty devices are described in detail in Vliestra et al., “Coronary Balloon Angioplasty,” Blackwell Scientific Publications (1994).
Medical balloons that are known in the art are disclosed in the following documents: U.S. Pat. Nos. 4,964,853 and 4,994,032 to Sugiyama et al; U.S. Pat. Nos. 4,906,244, 5,108,415, 5,156,612, 5,236,659, and 5,304,197, to Pinchuk et al; U.S. Pat. Nos. 5,226,880 and 5,334,148 to Martin; U.S. Pat. No. 5,250,069 to Nobuyoshi et al; U.S. Pat. No. 5,328,468 to Kaneko et al.; European Patent Application No. 0 566 755; and Japanese laid-open patent application No. 58-188463. (All documents cited herein, including the foregoing, are incorporated herein in their entireties for all purposes.)
It is an object of the present invention to provide a balloon for an angioplasty device which is made, at least in part, of polyesteretheramide copolymer.
Other objects and advantages of the invention will become apparent to those skilled in the art through familiarization with the specification and claims herein.
SUMMARY OF THE INVENTION
In sum, the present invention relates to a balloon for an angioplasty device having a single polymeric layer. The layer may. have from about 20 to about 100 weight percent polyesteretheramide copolymer and from about 0 to about 80 weight percent polyamide. The layer contains substantially no polyetheramide having substantially no ester linkages. The polyesteretheramide copolymer may be a block or random copolymer. The polyesteretheramide copolymer may have a hardness of from about 45 Shore D to about 78 Shore D, preferably from about 55 Shore D to about 75 Shore D, and more preferably from about 63 to about 72 Shore D. Even more preferably, the polyesteretheramide copolymer may have a hardness selected from about 63 Shore D, about 70 Shore D, and about 72 Shore D. The single polymeric layer may contain at least about 2 weight percent polyamide such as nylon 12, nylon 11, nylon 6, nylon 6/6, nylon 4/6, and combinations thereof. The single polymeric layer may further contain at least about 2 weight percent polymer such as polyester copolymer, polyurethane copolymer, polyethylene, and combinations thereof. The polymeric layer may have at least about 40 weight percent polyesteretheramide copolymer and more preferably at least about 80 weight percent polyesteretheramide copolymer. The balloon may have from about 20 to about 80 weight percent nylon 12 and about 20 to about 80 weight percent polyesteretheramide copolymer, preferably about 60 weight percent nylon 12 and about 40 weight percent polyesteretheramide copolymer. Alternatively, the balloon may have about 25 to about 80 weight percent nylon 4/6 and about 20 to about 75 weight percent polyesteretheramide copolymer, preferably about 65 weight percent nylon 4/6 and about 35 weight percent polyesteretheramide copolymer.
The present invention also relates to a balloon for an angioplasty device having a single polymeric layer consisting essentially of a polyesteretheramide copolymer. The polyesteretheramide copolymer may be a block or random copolymer. The polyesteretheramide copolymer may have a hardness of from about 45 Shore D to about 78 Shore D, preferably from about 55 Shore D to about 75 Shore D, and more preferably about 63 to about 72 Shore D. Even more preferably the polyesteretheramide copolymer may have a hardness selected from 63 Shore D, 70 Shore D, and 72 Shore D. The balloon may consist of polyesteretheramide.
The present invention also relates to a balloon for an angioplasty device having a single polymeric layer having (a) at least 91 weight percent polyesteretheramide copolymer, (b) from 0 to 9 weight percent polyamide, and (c) from 0 to 9 weight percent of a polymer other than polyesteretheramide and polyamide. The balloon may have at least about 95 weight percent polyesteretheramide copolymer.
REFERENCES:
patent: 4154244 (1979-05-01), Becker et al.
patent: 4254774 (1981-03-01), Boretos
patent: 4331786 (1982-05-01), Foy et al.
patent: 4332920 (1982-06-01), Foy et al.
patent: 4385635 (1983-05-01), Ruiz
patent: 4413989 (1983-11-01), Schejeldahl et al.
patent: 4490421 (1984-12-01), Levy
patent: 4563181 (1986-01-01), Wijayarathna et al.
patent: 4675361 (1987-06-01), Ward, Jr.
patent: 4786556 (1988-11-01), Hu et al.
patent: 4820270 (1989-04-01), Hardcastle et al.
patent: 4886506 (1989-12-01), Lovegren
patent: 4898591 (1990-02-01), Jang et al.
patent: 4906244 (1990-03-01), Pinchuk et al.
patent: 4917667 (1990-04-01), Jackson
patent: 4938676 (1990-07-01), Jackowski et al.
patent: 4950239 (1990-08-01), Gahara et al.
patent: 4950257 (1990-08-01), Hibbs et al.
patent: 4952357 (1990-08-01), Euteneuer
patent: 4964853 (1990-10-01), Sugiyama et al.
patent: 4994032 (1991-02-01), Sugiyama et al.
patent: 5108415 (1992-04-01), Pinchuk et al.
patent: 5156612 (1992-10-01), Pinchuk et al.
patent: 5226880 (1993-07-01), Martin
patent: 5236659 (1993-08-01), Pinchuk et al.
patent: 5246420 (1993-09-01), Kraus et al.
patent: 5250069 (1993-10-01), Nobuyoshi et al.
patent: 5264260 (1993-11-01), Saab
patent: 5281677 (1994-01-01), Onwunaka et al.
patent: 5290306 (1994-03-01), Trotta et al.
patent: 5295978 (1994-03-01), Fan et al.
patent: 5300048 (1994-04-01), Drewes, Jr. et al.
patent: 5304134 (1994-04-01), Kraus et al.
patent: 5304135 (1994-04-01), Shonk
patent: 5304197 (1994-04-01), Pinchuk et al.
patent: 5304340 (1994-04-01), Downey
patent: 5328468 (1994-07-01), Kaneko et al.
patent: 5334148 (1994-08-01), Martin
patent: 5335675 (1994-08-01), Wheeler, deceased et al.
patent: 5342386 (1994-08-01), Trotta
patent: 5344400 (1994-09-01), Kaneko et al.
patent: 5348538 (1994-09-01), Wang et al.
patent: 5358486 (1994-10-01), Saab
patent: 5397306 (1995-03-01), Nobuyoshi et al.
patent: 5433713 (1995-07-01), Trotta
patent: 5500180 (1996-03-01), Anderson et al.
patent: 5545133 (1996-08-01), Burns et al.
patent: 5554120 (1996-09-01), Chen et al.
patent: 5556383 (1996-09-01), Wang et al.
patent: 5565523 (1996-10-01), Chen et al.
patent: 5747591 (1998-05-01), Chen et al.
patent: 5830182 (1998-11-01), Wang et al.
patent: 5849846 (1998-12-01), Chen et al.
patent: 5879369 (1999-03-01), Ishida
patent: 5921957 (1999-07-01), Killion et al.
patent: 697219 A2 (1983-02-01), None
patent: 117093 A3 (1984-08-01), None
patent: 274411 A2 (1988-07-01), None
patent: 513459 A1 (1992-11-01), None
patent: 537069 A1 (1993-04-01), None
patent: 540858 A1 (1993-05-01), None
patent: 420488 B1 (1993-07-01), None
patent: 566755 A1 (1993-10-01), None
patent: 592885 A2 (1994-04-01), None
patent: 2651681 (1983-02-01), None
patent: 58-188463 (1983-11-01), None
patent: 8401513 (1984-04-01), None
patent: 9001345 (1990-02-01), None
patent: 9208512 (1992-05-01), None
patent: 9219316 (1992-11-01), None
patent: 9523619 (1995-09-01), None
Atochem, “PEBAX Polyether Block Amide” (Dec. 1987) , pp. 1-22.
Huls America Inc. “Engineering Thermoplastics” (Oct. 1988) , pp. 1-88.
Flesher, “Polyether block amide, high-performance TPE,” Modern Plastics, Sep. 1987, pp. 100,105,106 and 110.
Dupont, “Hytrel®” 11p. product brochure dated 10/91.
Koch, “Pebax (Polyether Block Amide)”, Advances in Polymer Technology, vol. 2
Kennedy Sharon
Schneider (USA) Inc.
Thompson Michael M
Vidas Arrett & Steinkraus
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