Medical implant with a fixing device

Patent metadata

Field	Value
Publication number	US-9827414-B2
Application number	US-201514803003-A
Country	US
Kind code	B2
Filing date	Jul 17, 2015
Priority date	Aug 21, 2014
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

Embodiments include a medical implant for insertion into the human and/or animal body. The medical implant includes a helical fixing device to fix the implant at a site of implantation, wherein the helical fixing device is one or more of coupled to a locking device on the fixing device and coupled to an implant surface. One or more of the locking device and the implant surface impedes an autonomous detachment of the fixing device.

First claim

What is claimed is:

1. A medical implant configured to be inserted into the human and/or animal body, comprising:
a helical fixing device that fixes the medical implant at a site of implantation;
a locking device that impedes an autonomous detachment of the helical fixing device from the site of implantation;
an implant surface; and,
a resorbable coating on the implant surface;
wherein the locking device is one or more of coupled to the helical fixing device and coupled to the implant surface,
wherein the locking device comprises one or more barbs on the helical fixing device,
wherein at least one barb of the one or more barbs is covered temporarily by the resorbable coating,
wherein the at least one barb comprises a spring force, and
wherein when the resorbable coating that is on the implant surface and that covers the at least one barb has dissolved, then the at least one barb
is deployed by the spring force,
forms an anti-twist mechanism, and
protrudes out from under the implant surface into the site of implantation to fix the medical implant at the site of implantation.

2. The medical implant as claimed in claim 1 , wherein the locking device further comprises one or more barbs on the implant surface.

3. The medical implant as claimed in claim 1 , wherein the resorbable coating fixes the at least one barb on one or more of the helical fixing device and the implant surface against the spring force of said at least one barb.

4. The medical implant as claimed in claim 1 , wherein one or more of the helical fixing device and the implant surface comprise one or more undercuts, wherein the one or more undercuts delimit one or more cavities, wherein the one or more cavities are temporarily filled with a resorbable material.

5. The medical implant as claimed in claim 1 , wherein the helical fixing device comprises an outer helix and an inner helix, wherein the inner helix is geometrically discordant with respect to the outer helix, such that a direction of movement of the inner helix is predefined.

6. The medical implant as claimed in claim 5 , wherein one or more of the outer helix and the inner helix comprise a sliding coating at least in regions.

7. The medical implant as claimed in claim 1 , wherein the locking device further comprises one or more spikes, wherein the one or more spikes are pushed out and are extended from the implant surface.

8. The medical implant as claimed in claim 7 , wherein the helical fixing device is coupled to an actuator, and wherein the actuator extends the helical fixing device from the implant surface.

9. The medical implant as claimed in claim 8 , wherein the actuator extends the one or more spikes from the implant surface simultaneously with the helical fixing device.

10. The medical implant as claimed in claim 1 , wherein one or more of the helical fixing device and the implant surface are coated at least in regions with a biocompatible adhesive.

11. The medical implant as claimed in claim 10 , wherein the biocompatible adhesive comprises at least one of fibrin glue and cyanoacrylate adhesive.

12. The medical implant as claimed in claim 1 , wherein the implant surface comprises a flat surface, such that when the at least one barb protrudes out from under the implant surface into the site of implantation the at least one barb protrudes out from the flat surface.

13. A medical implant configured to be inserted into the human and/or animal body, comprising:
a helical fixing device that fixes the medical implant at a site of implantation;
a locking device that impedes an autonomous detachment of the helical fixing device from the site of implantation;
an implant surface, wherein the implant surface comprises a flat surface; and,
a resorbable coating on the implant surface;
wherein the locking device is one or more of coupled to the helical fixing device and coupled to the implant surface,
wherein the locking device comprises one or more barbs on the helical fixing device,
wherein at least one barb of the one or more barbs is covered temporarily by the resorbable coating,
wherein the at least one barb comprises a spring force,
wherein when the resorbable coating that is on the implant surface and that covers the at least one barb has dissolved, then the at least one barb
is deployed by the spring force,
forms an anti-twist mechanism, and
protrudes out from under the implant surface into the site of implantation to fix the medical implant at the site of implantation, such the at least one barb protrudes out from the flat surface, and

wherein the locking device further comprises one or more spikes, wherein the one or more spikes are pushed out and are extended from the implant surface.

Assignees

• Biotronik Se & Co Kg

Inventors

• Doerr Thomas
• Diebold Michael

Classifications

• A61N1/05 Primary

  for implantation or insertion into the body, e.g. heart electrode (A61N1/06 takes precedence) · CPC title

• A61N1/057

  Anchoring means; Means for fixing the head inside the heart · CPC title

• A61B2017/0649

  Coils or spirals · CPC title

• A61B17/064

  Surgical staples, {i.e. penetrating the tissue} · CPC title

• A61N1/059 Primary

  Anchoring means · CPC title