MEDICAL DEVICE FOR REMOVING CONCRETIONS
First Claim
1. A medical device for removing concretions from hollow organs of the body, with a functional element, which has a rotationally symmetrical lattice structure and a means for holding a concretion in the lattice structure, and a catheter for introducing the functional element into the body and for removing it therefrom, the functional element being convertible from a compressed state in the catheter into an expanded state outside the catheter, in which the functional element is arranged distally from the catheter,whereinthe lattice structure has a cutting region with webs, which, during use, at least partially radially penetrate the concretion during the conversion of the functional element from the compressed state into the expanded state, and the holding means comprises at least one holding element, which is surrounded proximally and distally in the longitudinal direction as well as in the circumferential direction of the lattice structure by lattice cells and/or meshes of the cutting region, the lattice cells and/or meshes of the cutting region being arranged in the same cylindrical lateral surface of the lattice structure.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical device for removing concretions from hollow organs of the body, with a functional element, which has a rotationally symmetrical lattice structure, and a device for holding a concretion in the structure, and a catheter for introducing the element into the body and removing it. The element can be converted from a compressed state in the catheter to an expanded state outside the catheter, in the expanded state the element is arranged distally from the catheter. The structure has a cutting area with webs, adapted so they at least partially pass radially through the concretion when the element is converted from the compressed to the expanded state. A holding element is connected on one hand to the structure and on the other hand to a guide wire arranged in the catheter, so that the holding element is deflected radially inwards in the expanded state of the functional element.
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Citations
16 Claims
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1. A medical device for removing concretions from hollow organs of the body, with a functional element, which has a rotationally symmetrical lattice structure and a means for holding a concretion in the lattice structure, and a catheter for introducing the functional element into the body and for removing it therefrom, the functional element being convertible from a compressed state in the catheter into an expanded state outside the catheter, in which the functional element is arranged distally from the catheter,
wherein the lattice structure has a cutting region with webs, which, during use, at least partially radially penetrate the concretion during the conversion of the functional element from the compressed state into the expanded state, and the holding means comprises at least one holding element, which is surrounded proximally and distally in the longitudinal direction as well as in the circumferential direction of the lattice structure by lattice cells and/or meshes of the cutting region, the lattice cells and/or meshes of the cutting region being arranged in the same cylindrical lateral surface of the lattice structure.
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16. A medical device for removing concretions from hollow organs of the body, with a functional element, which has a rotationally symmetrical lattice structure and a means for holding a concretion in the lattice structure, and a catheter for introducing the functional element into the body and for removing it therefrom, the functional element being convertible from a compressed state in the catheter into an expanded state outside the catheter, in which the functional element is arranged distally from the catheter,
wherein the lattice structure has a cutting region with webs, which are adapted in such a way that they at least partially radially penetrate the concretion during the conversion of the functional element from the compressed state into the expanded state, and the holding means comprises at least one holding element, which is connected to the lattice structure and also to the guide wire arranged in the catheter in such a way that the holding element is deflected radially inwardly in the expanded state of the functional element.
Specification