Catheter member with bondable layer
First Claim
1. An intraluminal catheter comprising:
- a) an elongated shaft having proximal and distal ends, a port in the distal end and a guidewire lumen extending therein to and in fluid communication with the port in the distal end;
b) the guidewire lumen being defined at least in part by a multilayered tubular member having an inner layer formed of a lubricious polymeric material and an outer layer formed of a polyolefin polymerized with up to about 35% by weight of a polymer having reactive monomer groups, the outer layer having a melting point lower than that of the inner layer; and
c) a catheter part fusion bonded to the outer layer of the multilayered tubular layer.
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Accused Products
Abstract
The invention is directed to a catheter formed at least in part of a multilayered member having a first layer which is fusion bondable to another catheter component such as the skirt of an inflatable balloon and a second layer which is adjacent the first layer having a melting point greater than the first layer so that the multilayered member of the catheter is not deformed when the other catheter component is fusion bonded to the first layer of the multilayered member. The second layer is preferably lubricious in nature. In one embodiment of the invention, the multilayered member is a tubular element with the lubricious second layer defining an inner lumen extending within the tubular element. The outer layer of the tubular member may extend beyond the distal end of the inner layer and form a non-traumatic distal tip. Alternatively, a flexible non-traumatic distal tip may be fusion bonded to at least the outer layer of the multilayered tubular member.
246 Citations
58 Claims
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1. An intraluminal catheter comprising:
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a) an elongated shaft having proximal and distal ends, a port in the distal end and a guidewire lumen extending therein to and in fluid communication with the port in the distal end; b) the guidewire lumen being defined at least in part by a multilayered tubular member having an inner layer formed of a lubricious polymeric material and an outer layer formed of a polyolefin polymerized with up to about 35% by weight of a polymer having reactive monomer groups, the outer layer having a melting point lower than that of the inner layer; and c) a catheter part fusion bonded to the outer layer of the multilayered tubular layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 56)
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16. An intraluminal catheter, comprising:
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a) an elongated catheter shaft having proximal and distal ends, a port in the distal end and a lumen extending therein; b) a first catheter part having a first polymer layer with a desired melting point formed of a polyolefin copolymerized with up to about 35% by weight of a polymer having reactive monomer groups, and a second polymer layer with a melting point greater than the melting point of the first polymer layer; and c) a second catheter part fusion bonded to the first polymer layer of the first catheter part. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A balloon dilatation catheter comprising:
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a) an elongated shaft having proximal and distal ends, a port in the distal end and a guidewire lumen extending therein to and in fluid communication with the port in the distal end; b) the guidewire lumen being defined at least in part by a multilayered tubular member having an inner layer formed of a lubricious polymeric material and an outer layer formed of a polyolefin polymerized with up to about 35% by weight of a polymer having reactive monomer groups, the outer layer having a melting point less than that of the lubricious polymeric material of the adjacent inner layer; and c) a catheter part fusion bonded to the outer layer of the inner tubular layer. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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33. An intraluminal catheter comprising:
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a) an elongated shaft having proximal and distal ends, a port in the distal end and a guidewire lumen extending therein to and in fluid communication with the port in the distal end; b) a multilayered tubular member having an inner layer formed of a lubricious polymeric material which defines in part the guidewire lumen and an outer layer formed of a polymeric material having a lower melting point than the melting point of the polymeric material of the inner layer; and c) a non-traumatic distal tip on the distal end of the catheter formed by an extension of the outer layer of the multilayered tubular member. - View Dependent Claims (34)
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35. An elongated catheter shaft, comprising:
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a) a catheter wall defining at least in part a lumen extending therein; b) an inner layer which defines at least in part the lumen extending within the shaft and which terminates at a location proximal to the distal end of the catheter; and c) an outer layer which is more flexible than the inner layer and which extends distally beyond the location where the inner layer terminates, forming a non-traumatic distal end of the catheter shaft. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. An elongated catheter shaft, comprising:
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a) a tubular member having a lumen, and having a port in an end of the tubular member in fluid communication with the lumen; b) an inner layer of the tubular member which defines at least in part the lumen extending therein and which is formed of lubricious polymeric material having a desired melting point; and c) an outer layer of the tubular member formed of a polymeric material which is more flexible than the inner layer polymeric material and which has a melting point at least 20°
C. less than the melting point of the inner layer. - View Dependent Claims (46, 47, 48, 49, 50, 53)
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51. An intralumenal catheter part comprising an elongated multilayered tubular member having an inner lubricious layer and an adjacent outermost polymeric layer formed of a polyolefin polymerized with up to about 35% by weight of a polymer having reactive monomer groups, the adjacent polymeric layer having a melting point of at least 20°
- C. less than the inner layer.
- View Dependent Claims (52, 54)
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55. An intraluminal catheter comprising:
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a) an elongated shaft having proximal and distal ends, a port in the distal end and a guidewire lumen extending therein to and in fluid communication with the port in the distal end; b) a multilayered tubular member having an inner layer formed of a lubricious polymeric material which defines in part the guidewire lumen and an outer layer formed of a polymeric material having a lower melting point than the melting point of the polymeric material of the inner layer; and c) a non-traumatic distal tip on the distal end of the catheter formed by a tubular member formed of flexible polymeric material which is secured to the outer layer of the multilayered tubular member or the distal end thereof, the distal tip having an outer layer and an inner layer, the inner layer being formed of low melting point polymeric material to facilitate fusion bonding to the outer layer of the multilayered tubular member. - View Dependent Claims (57, 58)
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Specification