Balloon catheter assembly
First Claim
Patent Images
1. A balloon catheter assembly, comprising:
- an expandable balloon having an opening in a proximal end portion thereof and including a marker made of an X-ray opaque substance;
an inner tube having a distal end portion which is removably inserted in said opening of said balloon;
an intermediate tube coaxially surrounding said inner tube with a space therebetween;
a chuck at a distal end of said intermediate tube, said chuck comprising a plurality of expandable and contractible holding portions; and
an outer tube surrounding said intermediate tube with a space therebetween;
said chuck being closed when pulled into said outer tube and pressed by said distal end of said outer tube to thereby hold said proximal end portion of said balloon, and said chuck being opened when pushed out of said distal end of said outer tube, to thereby release said proximal end portion of said balloon.
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Accused Products
Abstract
A balloon catheter assembly including a balloon and a catheter. The catheter has a chuck and a multi-tube unit including at least an inner tube and an outer tube arranged slidably and coaxially with the inner tube. The balloon is removably fixed to the distal portion of the inner tube by the chuck which is pulled into the outer tube to be closed, and which is extended from the outer tube to be opened. The catheter is introduced to a required dwelling portion in a blood vessel by a tubular guide sheath having an inner diameter such that the guide sheath admits the catheter, and the expanded balloon is left in the dwelling portion to occlude the blood vessel.
394 Citations
30 Claims
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1. A balloon catheter assembly, comprising:
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an expandable balloon having an opening in a proximal end portion thereof and including a marker made of an X-ray opaque substance; an inner tube having a distal end portion which is removably inserted in said opening of said balloon; an intermediate tube coaxially surrounding said inner tube with a space therebetween; a chuck at a distal end of said intermediate tube, said chuck comprising a plurality of expandable and contractible holding portions; and an outer tube surrounding said intermediate tube with a space therebetween; said chuck being closed when pulled into said outer tube and pressed by said distal end of said outer tube to thereby hold said proximal end portion of said balloon, and said chuck being opened when pushed out of said distal end of said outer tube, to thereby release said proximal end portion of said balloon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 26)
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11. A balloon catheter assembly comprising:
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an expandable balloon having an opening in a proximal end portion, said proximal end portion having an outer peripheral surface; an inner tube having a distal portion removably inserted in said opening of said balloon; a chuck at said distal portion of said inner tube, said chuck surrounding said distal portion of said inner tube, and said chuck having a plurality of holding portions extending radially outwardly at distal ends thereof; and an outer tube coaxially surrounding said inner tube with a space therebetween, said outer tube having a distal end, said chuck being adapted to be closed when said inner tube is pulled in said outer tube by pushing said holding portions inwardly by said distal end of said outer tube to hold said proximal portion of said balloon on said outer peripheral surface thereof, and adapted to release said proximal portion of said balloon when projected from said distal end of said outer tube to be disengaged therefrom. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. The balloon catheter assembly, comprising:
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a balloon; a balloon catheter including a multi-tube unit comprising an inner tube, an outer tube coaxial with said inner tube, and a chuck for selectively holding and releasing said balloon, said multi-tube unit having a distal end portion communicating with said balloon, said outer tube having a distal end at which said chuck is selectively opened and closed; and a guide sheath comprising a tube body having such an inner diameter that said guide sheath admits said balloon catheter so as to introduce said balloon to a required dwelling portion. - View Dependent Claims (23, 24, 25)
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27. A balloon catheter assembly, comprising:
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an expandable balloon having an opening in a proximal end portion thereof; an inner tube having a distal end portion which is removably inserted in said opening of said balloon; an intermediate tube coaxially surrounding said inner tube with a space therebetween; a chuck at a distal end of said intermediate tube, said chuck comprising a plurality of expandable and contractible holding portions; and an outer tube surrounding said intermediate tube with a space therebetween; said chuck being closed when pulled into said outer tube and pressed by said distal end of said outer tube to thereby hold said proximal end portion of said balloon, and said chuck being opened when pushed out of said distal end of said outer tube, to thereby releases said proximal end portion of said balloon; and
whereinsaid intermediate tube and said outer tube have proximal ends connected to respective check valves; said intermediate tube extends outward from said outer tube via said check valve connected to said outer tube; and said inner tube extends outward from said intermediate tube via said check valve connected to said intermediate tube, such that a body fluid is prevented from flowing reversely when said distal portion of said catheter is inserted in a body. - View Dependent Claims (28)
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29. A balloon catheter assembly, comprising:
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an expandable balloon having an opening in a proximal end portion thereof; an inner tube having a distal end portion which is removably inserted in said opening of said balloon; an intermediate tube coaxially surrounding said inner tube with a space therebetween; a chuck at a distal end of said intermediate tube, said chuck comprising a plurality of expandable and contractible holding portions; and an outer tube surrounding said intermediate tube with a space therebetween; said chuck being closed when pulled into said outer tube and pressed by said distal end of said outer tube to thereby hold said proximal end portion of said balloon, and said chuck being opened when pushed out of said distal end of said outer tube, to thereby release said proximal end portion of said balloon; and wherein said balloon has a circular middle portion which is thick such that said balloon takes a bottle-gourd shape when expanded.
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30. A balloon catheter assembly, comprising:
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an expandable balloon having an opening in a proximal end portion thereof; an inner tube having a distal end portion which is removably inserted in said opening of said balloon; an intermediate tube coaxially surrounding said inner tube with a space therebetween; a chuck at a distal end of said intermediate tube, said chuck comprising a plurality of expandable and contractible holding portions; and an outer tube surrounding said intermediate tube with a space therebetween; said chuck being closed when pulled into said outer tube and pressed by said distal end of said outer tube to thereby hold said proximal end portion of said balloon, and said chuck being opened when pushed out of said distal end of said outer tube, to thereby release said proximal end portion of said balloon; said balloon being molded from at least one material selected from the group consisting of silicone rubber, polyurethane and latex; and said balloon including a mesh molded from at least one material selected from the group consisting of nylon, polyethelene terephthalate and polyurethane, said mesh being buried therein so as to restrict the expansion degree of said balloon.
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Specification