Catheter assembly
First Claim
1. A catheter assembly comprising:
- an outer catheter and an inner catheter that can be inserted into said outer catheter;
said outer catheter being comprised an outer catheter body comprising at least an inner layer, an outer layer, and a reinforcing layer interposed between them, a flexible soft tip attached to a distal end of said outer catheter body, and an outer catheter hub attached to a proximal end of said outer catheter body;
said inner catheter being comprised a hard proximal part, a distal part softer than said hard proximal part, and an inner catheter hub formed at a proximal end of the proximal part, and wherein said outer catheter hub and said inner catheter hub are adapted to be fixed each other so that said two catheters do not rotate and move relative to each other, when said outer catheter hub and said inner catheter hub engage each other, at least a part of said inner catheter protrudes from a distal end of said outer catheter, with the distance between the distal end of said outer catheter and a distal end of said inner catheter being no more than 10 mm.
1 Assignment
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Accused Products
Abstract
A catheter assembly (1), including an outer catheter (2) and an inner catheter (6) capable of being inserted into the outer catheter (2). The catheter assembly is characterized in that an outer catheter hub (5) and an inner catheter hub (9) are fixedly fitted to each other so that the two catheters are not rotated nor moved relative to each other, and when fitted to each other, at least a part of the tip of the inner catheter (6) is protruded by 10 mm or shorter from the tip of the outer catheter (2). When the inner catheter is inserted into the outer catheter, operabilities such as kink resistance, press-in performance, and torque transmission performance are excellent and the inner diameter thereof is increased when the catheter is used after indwelling. As a result, the range of choices of a catheter for treatment can be increased.
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Citations
20 Claims
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1. A catheter assembly comprising:
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an outer catheter and an inner catheter that can be inserted into said outer catheter;
said outer catheter being comprised an outer catheter body comprising at least an inner layer, an outer layer, and a reinforcing layer interposed between them, a flexible soft tip attached to a distal end of said outer catheter body, and an outer catheter hub attached to a proximal end of said outer catheter body;
said inner catheter being comprised a hard proximal part, a distal part softer than said hard proximal part, and an inner catheter hub formed at a proximal end of the proximal part, and wherein said outer catheter hub and said inner catheter hub are adapted to be fixed each other so that said two catheters do not rotate and move relative to each other, when said outer catheter hub and said inner catheter hub engage each other, at least a part of said inner catheter protrudes from a distal end of said outer catheter, with the distance between the distal end of said outer catheter and a distal end of said inner catheter being no more than 10 mm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification