Device with implantable infusion chamber and a catheter extending therefrom
First Claim
1. A device comprising an infusion chamber which is implantable into the subcutaneous fatty tissue of a patient and which has region of elastic material, which can be pierced by means of an injection needle, and comprising a catheter which extends away from the infusion chamber and which can be introduced into a blood vessel, for example an artery, or another body cavity, characterised by the configuration in the form of a system which is implantable percutaneously with an insertion tube through a skin puncture opening.
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Accused Products
Abstract
There has been provided a catheter system which can be percutaneously implanted through a skin opening and which can be inserted for example by being pushed along a guide wire. An embodiment provides an infusion chamber which can be changed between a condition of reduced cross-section, upon being inserted, and a position of use which is expanded in relation thereto, in the implanted condition, and which is provided with expandable means which after expansion remain in the expanded condition, for shape retention purposes. The expansion means may be for example a balloon catheter which can be removed after the expansion operation. Another embodiment makes use of an infusion chamber which is of a stiff configuration.
172 Citations
19 Claims
- 1. A device comprising an infusion chamber which is implantable into the subcutaneous fatty tissue of a patient and which has region of elastic material, which can be pierced by means of an injection needle, and comprising a catheter which extends away from the infusion chamber and which can be introduced into a blood vessel, for example an artery, or another body cavity, characterised by the configuration in the form of a system which is implantable percutaneously with an insertion tube through a skin puncture opening.
- 4. A device comprising an infusion chamber which is implantable into the subcutaneous fatty tissue of a patient and which has a region of elastic material, which can be pierced by means of an injection needle, and comprising a catheter which extends away from the infusion chamber and which can be introduced into a blood vessel, for example an artery, or another body cavity, characterised in that the infusion chamber (10) is changeable between a condition which is reduced in cross-section and which permits percutaneous insertion for example by being pushed on over a guide wire (30), and a position of use in which it is expanded in comparison therewith (in the implanted condition), and is provided with expandable means (11, 44, 45) which remain in the expanded condition after the expansion operation and which hold the infusion chamber in the expansion position.
Specification