Release device for releasing a medical implant from a catheter and catheter having a release device and method for clamping an implant therein
First Claim
1. A release device for releasing a medical self-expanding implant from an insertion device, in the case of which the self-expanding implant can be released by way of a relative motion between inner and outer shafts, comprising a clamping unit for clamping the self-expanding implant in the insertion device, having a proximal end which is distant from a distal end of the insertion device, and a clamping unit distal end which faces the distal end of the insertion device, wherein the clamping unit comprises a cup-shaped socket that accepts a proximal end of the self-expanding implant, wherein the cup-shaped socket is configured to withstand radial forces of the self-expanding implant, and a plug connector is fixed on the inner shaft that presses the self-expanding implant against the outer shaft and is separated by an axial distance from the cup-shaped socket, wherein the plug connector and the cup-shaped socket cooperate to clamp the self-expanding implant there between in a clamped state when the self-expanding implant is within the outer shaft and to release the self-expanding implant via proximal retraction of the outer shaft to release a distal end of the self-expanding implant followed by retraction of the inner and outer shafts to release a proximal end of the self-expanding implant.
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Accused Products
Abstract
An embodiment of the invention relates to a release device for releasing a medical implant from an insertion device, in the case of which the implant can be released by way of a relative motion between a first and a second insertion element, comprising a clamping element for clamping the implant in the insertion device, having a proximal end which is distant from a distal end of the insertion device in the state of use, and a distal end which faces the distal end of the insertion device in the state of use, wherein the clamping unit comprises a first component and at least one second component, which clamp the implant there between in the clamped state. The invention further relates to an insertion device comprising such a release device and a method for clamping an implant in an insertion device.
21 Citations
16 Claims
- 1. A release device for releasing a medical self-expanding implant from an insertion device, in the case of which the self-expanding implant can be released by way of a relative motion between inner and outer shafts, comprising a clamping unit for clamping the self-expanding implant in the insertion device, having a proximal end which is distant from a distal end of the insertion device, and a clamping unit distal end which faces the distal end of the insertion device, wherein the clamping unit comprises a cup-shaped socket that accepts a proximal end of the self-expanding implant, wherein the cup-shaped socket is configured to withstand radial forces of the self-expanding implant, and a plug connector is fixed on the inner shaft that presses the self-expanding implant against the outer shaft and is separated by an axial distance from the cup-shaped socket, wherein the plug connector and the cup-shaped socket cooperate to clamp the self-expanding implant there between in a clamped state when the self-expanding implant is within the outer shaft and to release the self-expanding implant via proximal retraction of the outer shaft to release a distal end of the self-expanding implant followed by retraction of the inner and outer shafts to release a proximal end of the self-expanding implant.
Specification