Balloon catheter
First Claim
1. A balloon catheter comprising a balloon and a plurality of tubular members,wherein said balloon catheter has a structure in which a first tubular member having as one purpose thereof to allow a slidable guide wire to pass through the interior thereof;
- said first tubular member is comprised of multiple layers having an outermost layer provided; and
the outermost surface of said first tubular member is comprised of said outermost layer;
wherein the first tubular member is deployed passing through the interior of said balloon, and said balloon and the outer surface of said first tubular member are fused concentrically in the vicinity of the distal end of said catheter; and
wherein a Shore hardness of a material configuring the outermost surface of at least that portion of said first tubular member where said balloon is fused is lower than the Shore hardness of a material configuring said balloon.
3 Assignments
0 Petitions
Accused Products
Abstract
The present invention is a balloon catheter used primarily in treatment and surgery for the purpose of dilating lesion sites such as strictures or blockages in passages in the human body. The balloon catheter of the present invention has a structure wherein a guide wire passing tubular member is deployed passing through the interior of the expansion body, and the outer surface of the tubular member and the expansion body are concentrically fused near the distal end of the catheter. This is a balloon catheter that is characterized by the fact that the Shore hardness of the material configuring the outermost surface of the tubular member is smaller than the Shore hardness of the material configuring the expansion body. It is therefore possible to flexibly adjust the tip portion formed by securing the expansion body and the guide wire passing tubular member.
41 Citations
37 Claims
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1. A balloon catheter comprising a balloon and a plurality of tubular members,
wherein said balloon catheter has a structure in which a first tubular member having as one purpose thereof to allow a slidable guide wire to pass through the interior thereof; -
said first tubular member is comprised of multiple layers having an outermost layer provided; and the outermost surface of said first tubular member is comprised of said outermost layer; wherein the first tubular member is deployed passing through the interior of said balloon, and said balloon and the outer surface of said first tubular member are fused concentrically in the vicinity of the distal end of said catheter; and wherein a Shore hardness of a material configuring the outermost surface of at least that portion of said first tubular member where said balloon is fused is lower than the Shore hardness of a material configuring said balloon. - View Dependent Claims (4, 5, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 37)
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2. A balloon catheter comprising a balloon and a plurality of tubular members;
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wherein said balloon catheter has a structure in which a first tubular member having as one purpose thereof to allow a slidable guide wire to pass through the interior thereof; said first tubular member is comprised of multiple layers having an outermost layer provided; and the outermost surface of said first tubular member is comprised of said outermost layer; wherein the first tubular member is deployed passing through the interior of said balloon, and said balloon and the outer surface of said first tubular member are fused concentrically in the vicinity of the distal end of said catheter; and wherein flexural modulus of a material configuring the outermost surface of at least that portion of said first tubular member where said balloon is fused is lower than the flexural modulus of a material configuring said balloon.
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3. A balloon catheter comprising a balloon and a plurality of tubular members,
wherein said balloon catheter has a structure in which a first tubular member having as one purpose thereof to allow a slidable guide wire to pass through the interior thereof: -
said first tubular member is comprised of multiple layers having an outermost layer provided; and the outermost surface of said first tubular member is comprised of said outermost layer; wherein the first tubular member is deployed passing through the interior of said balloon, and said balloon and the outer surface of said first tubular member are fused concentrically in the vicinity of the distal end of said catheter; and wherein melting point of a material configuring the outermost surface of at least that portion of said first tubular member where said balloon is fused is lower than the melting point of a material configuring said balloon.
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6. A balloon catheter comprising a balloon and a plurality of tubular members,
wherein said balloon catheter has a structure in which a first tubular member having as one purpose thereof to allow a slidable guide wire to pass through the interior thereof is deployed passing through the interior of said balloon, and said balloon and outer surface of said first tubular member are secured concentrically in the vicinity of the distal end of said catheter, wherein said securing is done by thermally fusing said balloon and a material miscible with said first tubular member, or said balloon and a material that chemically reacts with said first tubular member, as a direct securing layer, or as at least one layer when securing portion is made multi-layer; - and
wherein Shore hardness of a material configuring the layer adjacent to said balloon is lower than the Shore hardness of a material configuring said balloon. - View Dependent Claims (9, 10, 33, 34, 35, 36)
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7. A balloon catheter comprising a balloon and a plurality of tubular members,
wherein said balloon catheter has a structure in which a first tubular member having as one purpose thereof to allow a slidable guide wire to pass through the interior thereof is deployed passing through the interior of said balloon, and said balloon and outer surface of said first tubular member are secured concentrically in the vicinity of the distal end of said catheter; -
wherein said securing is done by thermally fusing said balloon and a material miscible with said first tubular member, or said balloon and a material that chemically reacts with said first tubular member, as a direct securing layer, or as at least one layer when securing portion is made multi-layer; and wherein flexural modulus of a material configuring the layer adjacent to said balloon is lower than the flexural modulus of a material configuring said balloon.
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8. A balloon catheter comprising a balloon and a plurality of tubular members,
wherein said balloon catheter has a structure in which a first tubular member having as one purpose thereof to allow a slidable guide wire to pass through the interior thereof is deployed passing through the interior of said balloon, and said balloon and outer surface of said first tubular member are secured concentrically in the vicinity of the distal end of said catheter; -
wherein said securing is done by thermally fusing said balloon and a material miscible with said first tubular member, or said balloon and a material that chemically reacts with said first tubular member, as a direct securing layer, or as at least one layer when securing portion is made multi-layer; and wherein melting point of a material configuring the layer adjacent to said balloon is lower than the melting point of a material configuring said balloon.
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Specification