Device for perforating the heart wall
First Claim
1. A device (1) comprising a catheter (4) with a distal operating end having at least one electrode or pole and a connection between said electrode or said pole and a high frequency generator (5), said catheter being introducible intracardially into a heart (3), wherein said electrode or said pole on said distal operating end includes at least one needle (6) which can be inserted into a heart wall (2) from its inside, said at least one needle being retractable into said distal end of said catheter (4) and being extendable for sticking into the heart wall, said needle (6) being elastic and precurved, and transforms into a curved shape upon said needle being extended out of said distal end of said catheter (4) to generate channels running in the heart wall (2) for providing the heart wall with blood.
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Accused Products
Abstract
A device (1) serves for creating perforations, borings or perfusion channels in the heart wall (2), especially in the myocardium, for generating channels running in the heart wall (2) for supplying it with blood. So that the chest cavity need not be opened in an operation for introducing such perforations, the device (1) has a catheter (4) introducible intracardially into the heart (3), which has at least one electrode or pole on its operating end and has a connection of this electrode or pole to a high frequency generator (5). Moreover, this distal operating end has at least one needle (6) insertible into the heart wall (2) from the inside, which needle functions as a coagulation tool, so that the lumen of the channel generated by it remains open and can be supplied with fresh blood from the interior of the heart (3).
137 Citations
19 Claims
- 1. A device (1) comprising a catheter (4) with a distal operating end having at least one electrode or pole and a connection between said electrode or said pole and a high frequency generator (5), said catheter being introducible intracardially into a heart (3), wherein said electrode or said pole on said distal operating end includes at least one needle (6) which can be inserted into a heart wall (2) from its inside, said at least one needle being retractable into said distal end of said catheter (4) and being extendable for sticking into the heart wall, said needle (6) being elastic and precurved, and transforms into a curved shape upon said needle being extended out of said distal end of said catheter (4) to generate channels running in the heart wall (2) for providing the heart wall with blood.
- 11. A device (1) comprising a catheter (4) with a distal operating end having at least one electrode or pole and a connection between said electrode or said pole and a high frequency generator (5), said catheter being introducible intracardially into a heart (3), wherein said electrode or said pole on said distal operating end includes at least one tool (6) which can be repeatedly inserted into a heart wall (2) from its inside to generate channels running in the heart wall (2) for providing the heart wall with blood, a displacement path of said tool relative to the distal operating end of said catheter being adapted to be less than a thickness of the heart wall, and wherein said tool is rotatable relative to said catheter.
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16. A method of generating channels running in a heart wall (2) for providing the heart wall with blood, comprising:
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introducing a catheter (4) intracardially into a heart (3) of a patient; extending a high frequency pole or electrode in a form of a needle from a distal end of said catheter (4) and sticking said needle into the heart wall from inside of the patient'"'"'s heart; channels running in the heart wall (2) with said needle for providing the heart wall with blood; and transmitting high frequency energy to said needle from a high frequency generator connected to said needle for coagulation, forming permanent channels. - View Dependent Claims (17, 18, 19)
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Specification