RELEASE DEVICE FOR RELEASING A MEDICAL IMPLANT FROM A CATHETER AND CATHETER COMPRISING A RELEASE DEVICE

• US 20140067037A1
• Filed: 11/28/2012
• Published: 03/06/2014
• Est. Priority Date: 08/30/2012
• Status: Active Grant

• Current Assignee: Biotronik AG (Biotronik SE & Company KG)
• Original Assignee: Biotronik AG (Biotronik SE & Company KG)
• Inventors: Fargahi, Amir
• Granted Patent: US 9,649,212 B2
• Time in Patent Office: Days
• US Class Current: 623/1.12
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/2439 Expansion controlled by filaments
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2002/9665 with additional retaining means

Abstract

A release device for releasing a medical implant from an insertion device, having an indirect or direct clamping body for clamping the implant in the insertion device, the clamping device having a proximal end, and having a distal end, wherein the clamping body has at least one web, at least one extension and at least two clamping surface regions, wherein the extension is oriented substantially in the radial direction of the clamping body, and wherein the at least two clamping surface regions are substantially pointing toward one another and are aligned substantially parallel to one another, wherein the at least one web or the at least one extension has at least one of the two clamping surface regions, and wherein the at least two clamping surface regions and/or the at least one extension connect/connects to at least one region of the implant in the clamped state.

Claims

1. A release device for releasing a medical implant from an insertion device, with which the implant can be released by a relative movement between a first and a second insertion element, the release device comprising an indirect or direct clamping body for clamping the implant in the insertion device, the clamping body comprising:

a proximal end, which is remote from a distal end of the insertion device during use, and comprising a distal end, which faces the distal end of the insertion device during use;

an outer cylinder spaced around an inner surface to form a receptacle for receiving the implant, the outer cylinder comprising an engagement element through which a received implant is capable of engagement; and

at least one web comprising at its distal end an extension that can be arranged so as to be oriented substantially in a radial direction relative to an inner axis of the clamping body, the extension configured to engage the received implant through the engagement element and within the receptacle to provide a clamped state.

2. The release device as claimed in claim 1, wherein the at least one web and/or the extension is formed resiliently.

3. The release device as claimed in claim 2, wherein the clamping body has a multiplicity of webs, which are distributed symmetrically over a peripheral edge of the clamping body.

4. The release device as claimed in claim 1, wherein the at least one web can be arranged relative to the inner axis of the clamping body at an angle (α

) of substantially 30°

, and/or wherein the extension is arranged on the at least one web at an angle (β

) of substantially 70°

.

5. The release device as claimed in claim 1, wherein the clamping body has a holding position in the clamped state and, when the holding position is released, has a neutral position, wherein the clamping body is movable into the neutral position by a resilience of the at least one web and/or the extension so as to release the the implant.

11. The release device as claimed in claim 1, wherein the clamping body is fastened to one of the insertion elements, in particular via its proximal end or its distal end.

15. The insertion device as claimed in claim 1, wherein the engagement element is an aperture sized to accept the extension and permits access to the received implant through the aperture.

6. (canceled)

7. The release device as claimed in claim 6, wherein the receptacle comprises a slit to receive the implant, wherein the slit extends at least along part of an edge of the clamping body.

8. The release device as claimed in claim 6, wherein the receptacle has at least one separating structure, which divides the receptacle into at least two receptacle sectors and/or which fixes the implant in the receptacle in a direction along an edge of the clamping body, at least in an intended insertion state.

9. The release device as claimed in claim 6, wherein the clamping body has at least one insertion aid, which is designed to guide insertion of the implant and which is arranged before the receptacle of the clamping body in a direction of supply when introducing the implant into the clamping body

10. (canceled)

12. An insertion device for insertion of a medical implant, which can be released by a relative movement between a first and a second insertion element, the insertion device comprising a release device for releasing the medical implant, the release device comprising an indirect and/or direct a clamping body for clamping the implant in the insertion device, the clamping body comprising:

a proximal end, which is remote from a distal end of the insertion device during use, and comprising a distal end, which faces the distal end of the insertion device during use;

an outer cylinder spaced around an inner surface to farm a receptacle for receiving the implant, the outer cylinder comprising an engagement element through which a received implant is capable of engagement; and

at least one web comprising at its distal end an extension that can be arranged so as to be oriented substantially in the radial direction relative to an inner axis of the clamping body, the extension configured to engage the received implant through the engagement element and within the receptacle to provide a clamped state.

13. The insertion device as claimed in claim 12, wherein a stopper is provided, which limits a movement of the implant in the direction of a proximal end of the insertion device or in the direction of the distal end of the insertion device, wherein the clamping body is formed integrally with the stopper.

14. The insertion device as claimed in claim 12, wherein the implant is a self-expanding implant and/or has no fastening elements.