Catheter assembly
First Claim
Patent Images
1. A catheter assembly comprising:
- a catheter which comprises;
a shaft comprised of flexible polymer material, said shaft having a distal end and a proximal end, said shaft possessing a periphery, andan inflatable/deflatable balloon provided on the distal end portion of the shaft, said inflatable/deflatable balloon having a distal end and a proximal end;
a covering sheath for covering said catheter together with a guidewire, said covering sheath comprising a synthetic resin material, said covering sheath having a distal end and a proximal end;
said catheter having a lumen extending in said catheter for insertion of the guidewire therethrough, said lumen having a first opening on the distal end of the shaft and a second opening on the periphery of the shaft at a location spaced proximally from said first opening, said second opening being covered by said covering sheath, said covering sheath having a length equal to or less than the length of the catheter shaft minus the length of the balloon,said covering sheath having guidewire passage means for enabling passage of the guidewire from an interior of the covering sheath to an exterior of the covering sheath,said guidewire being secured between said covering sheath and said shaft, and said catheter shaft having first and second opposite peripheral sides, said balloon being provided on said first peripheral side while said second opening is provided on said second peripheral side.
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Accused Products
Abstract
A highly safe catheter assembly exhibiting excellent torque transmission, pushability and kink resistance and operation of a guidewire is provided. The catheter assembly comprises a catheter having a lumen extending between an opening on its distal end and an opening in its periphery in distal end portion of the catheter for insertion of a guidewire therethrough, and a covering sheath for covering said catheter together with the guidewire, said covering sheath having a guidewire passage means for enabling passage of said guidewire from its interior to its exterior. The catheter of this assembly may be a PTCA catheter.
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Citations
18 Claims
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1. A catheter assembly comprising:
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a catheter which comprises; a shaft comprised of flexible polymer material, said shaft having a distal end and a proximal end, said shaft possessing a periphery, and an inflatable/deflatable balloon provided on the distal end portion of the shaft, said inflatable/deflatable balloon having a distal end and a proximal end; a covering sheath for covering said catheter together with a guidewire, said covering sheath comprising a synthetic resin material, said covering sheath having a distal end and a proximal end; said catheter having a lumen extending in said catheter for insertion of the guidewire therethrough, said lumen having a first opening on the distal end of the shaft and a second opening on the periphery of the shaft at a location spaced proximally from said first opening, said second opening being covered by said covering sheath, said covering sheath having a length equal to or less than the length of the catheter shaft minus the length of the balloon, said covering sheath having guidewire passage means for enabling passage of the guidewire from an interior of the covering sheath to an exterior of the covering sheath, said guidewire being secured between said covering sheath and said shaft, and said catheter shaft having first and second opposite peripheral sides, said balloon being provided on said first peripheral side while said second opening is provided on said second peripheral side. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A catheter assembly comprising:
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a catheter which comprises; a shaft comprised of flexible polymer material, said shaft having a distal end and a proximal end, said shaft possessing a periphery, and an inflatable/deflatable balloon provided on the distal end portion of the shaft, said inflatable/deflatable balloon having a distal end and a proximal end; a covering sheath for covering said catheter together with a guidewire, said covering sheath comprising a synthetic resin material, said covering sheath having a distal end and a proximal end; said catheter having a lumen extending in said catheter for insertion of the guidewire therethrough, said lumen having a first opening on the distal end of the shaft and a second opening on the periphery of the shaft at a location spaced proximally from said first opening, said second opening being covered by said covering sheath, said covering sheath having a length equal to or less than the length of the catheter shaft minus the length of the balloon, said covering sheath having guidewire passage means for enabling passage of the guidewire from an interior of the covering sheath to an exterior of the covering sheath, said guidewire being secured between said covering sheath and said shaft, and said catheter shaft being made of a flexible polymer material, and said covering sheath being made of a material having a rigidity higher than the catheter shaft. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A catheter assembly comprising:
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a catheter which comprises; a shaft having a distal end and a proximal end, said shaft possessing a periphery, and an inflatable/deflatable balloon having a distal end and a proximal end, said inflatable/deflatable balloon being provided on a distal end portion of the shaft; a covering sheath for covering said catheter together with a guidewire, said covering sheath having a distal end and a proximal end; said catheter having a lumen extending in said catheter for insertion of the guidewire therethrough, said lumen having a first opening on the distal end of the shaft and a second opening on the periphery of the shaft at a location spaced proximally from said first opening; said covering sheath having guidewire passage means for enabling passage of said guidewire from an interior of said covering sheath to an exterior of said covering sheath, said guidewire passage means being a slit formed between two overlapping opposite edges of a sheet curled by contraction force; and said guidewire being secured between said covering sheath and said shaft. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification