Catheter assembly of the hypodermic embedment type
First Claim
1. A catheter assembly of the hypodermic embedment type, which is used by being embedded in its entirety under the skin, the assembly comprising:
- a hypodermically embedable medicament infusion implement including a housing and at least one inlet port and at least one outlet port, said at least one inlet port and at least one outlet port being in communication with said housing; and
a balloon catheter having distal and proximal ends, and having a balloon at said distal end thereof;
said at least one outlet port of said medicament infusion implement connected to said proximal end of said catheter;
said at least one inlet port has mounted therein a resilient member which allows insertion of a needle and which self closes off after withdrawal of the needle;
said medicament infusion implement further including a first chamber for balloon inflation and a second chamber for medicament infusion defined in said housing, a first inlet port and a first outlet port in communication with said first chamber, and a second inlet port and a second outlet port in communication with said second chamber;
said first and second inlet ports having at least one dimension which is different from each other;
said balloon catheter including a tube body having a distal end, at least one expandable and contractible balloon disposed around the periphery of said tube body near said distal end of said tube body, a first lumen formed in said tube body in communication with said balloon, and a second lumen formed in said tube body and opening at a further distal end portion of said tube body beyond said balloon; and
said first lumen having a proximal end connected to said first outlet port and said second lumen having a proximal end connected to said second outlet port.
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Accused Products
Abstract
A catheter assembly of the hypodermic embedment type for infusing a fluid medicament such as a carcinostatic agent into a body cavity such as a blood vessel for therapeutic purposes, includes a medicament infusion implement having an inlet port and an outlet port and a catheter connected to the implement outlet port. The device is used by inserting and indwelling the catheter in a body cavity and embedding the implement beneath the skin. Treatment can be repeated any number of desired times with the catheter assembly kept indwelled in the body, resulting in a significant reduction of the burden to the patient as compared with the prior art technique requiring insertion and withdrawal of a catheter every time when treatment is made. Also, the danger of infection during the treatment is eliminated, as compared to the prior art technique where the catheter is percutaneously inserted.
270 Citations
18 Claims
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1. A catheter assembly of the hypodermic embedment type, which is used by being embedded in its entirety under the skin, the assembly comprising:
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a hypodermically embedable medicament infusion implement including a housing and at least one inlet port and at least one outlet port, said at least one inlet port and at least one outlet port being in communication with said housing; and a balloon catheter having distal and proximal ends, and having a balloon at said distal end thereof; said at least one outlet port of said medicament infusion implement connected to said proximal end of said catheter; said at least one inlet port has mounted therein a resilient member which allows insertion of a needle and which self closes off after withdrawal of the needle; said medicament infusion implement further including a first chamber for balloon inflation and a second chamber for medicament infusion defined in said housing, a first inlet port and a first outlet port in communication with said first chamber, and a second inlet port and a second outlet port in communication with said second chamber; said first and second inlet ports having at least one dimension which is different from each other; said balloon catheter including a tube body having a distal end, at least one expandable and contractible balloon disposed around the periphery of said tube body near said distal end of said tube body, a first lumen formed in said tube body in communication with said balloon, and a second lumen formed in said tube body and opening at a further distal end portion of said tube body beyond said balloon; and said first lumen having a proximal end connected to said first outlet port and said second lumen having a proximal end connected to said second outlet port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification