Implantable capsule for leadless cardiac pacing

Patent metadata

Field	Value
Publication number	US-9433780-B2
Application number	US-201514744966-A
Country	US
Kind code	B2
Filing date	Jun 19, 2015
Priority date	Jun 25, 2014
Publication date	Sep 6, 2016
Grant date	Sep 6, 2016

Abstract

The invention relates to an implantable capsule, particularly an autonomous capsule of cardiac stimulation, comprising a tubular body provided at the distal end of an anchoring element with a helical screw adapted to penetrate tissue a wall of an organ of a patient, the body housing a set of functional elements of the capsule. It comprises an annular support integral with the body and coaxial therewith, said support surrounding the base of the anchoring element and comprising a series of openings radially extending. The base of the anchoring element comprises a series of rods or tubes projecting in a generally radial direction, and engaged in said openings to thereby secure the anchoring element to the support.

First claim

What is claimed is:

1. An implantable capsule including an autonomous capsule for cardiac stimulation, comprising:
a tubular body;
an anchoring element with a helical screw ( 14 ) adapted to penetrate into a tissue of a wall of a body of a patient;
a support coupled to the body and generally coaxial therewith, the support surrounding a base of the anchoring element and comprising a series of openings extending radially through the support,
a series of rods or tubes extending from a base of the anchoring element, the series of rods or tubes projecting in a radial direction and engaged in the openings to thereby secure the anchoring element to said support.

2. The capsule of claim 1 , further comprising a drug diffusion ring disposed within the support and wherein the number of openings is greater than the number of rods, so as to promote the movement of a drug towards the outside of the support.

3. The capsule of claim 1 , wherein the rods are welded to the anchoring element.

4. The capsule of claim 1 , wherein the rods are welded within the openings.

5. The capsule of claim 1 , wherein the support is welded to the body.

6. The capsule of claim 1 , wherein the body and the support are made of stainless steel, while the anchoring element and the rods are made of titanium alloy.

7. The capsule of claim 1 , wherein the openings are evenly distributed around the periphery of the support.

8. The capsule of claim 7 , wherein the rods are located in two adjacent openings, the other openings being free.

9. The capsule of claim 1 , wherein the openings have a cross section corresponding to the outer perimeter of the rods.

10. The capsule of claim 1 , wherein the openings comprise notches in the general form of a L extending from a free face of the support, allowing a bayonet mounting of the anchoring element in the support.

11. The capsule of claim 1 , wherein rods are hollow such that the rods are tubes.

12. The capsule of claim 1 , wherein the support is annular.

13. A method of assembling an implantable capsule such as a pacemaker autonomous capsule, the capsule comprising a tubular body provided at the distal end of an anchoring element with a helical screw adapted to penetrate into a tissue of a wall of an organ of a patient, the body housing a set of functional elements of the capsule, the method comprising the steps of:
a) fixing to the body, by welding in a position coaxial with said body, an annular support having a series of openings radially extending therein;
b) engaging a base of the anchoring element within said support;
c) engaging in the openings of the support a series of rods or tubes;
d) welding the rods or tubes on the base of the anchoring element, by laser welding through the inside of the support; and
e) welding the rods or tubes to the support material in their respective openings by laser welding externally to the support.

14. The method of claim 13 , wherein the body and the support are made of stainless steel, while the anchoring element and the rods or tubes are made of titanium alloy.

15. A method of assembling an implantable capsule such as a pacemaker autonomous capsule, said capsule comprising a tubular body provided at the distal end of an anchoring element with a helical screw adapted to penetrate into a tissue of a wall of an organ of a patient, the body housing a set of functional elements of the capsule, the method comprising the steps of:
a) fixing to the body by welding in a position coaxial with said body, an annular support having a series of openings extending radially and formed by L-shaped notches,
b) welding a series of rods or tubes on a base of the anchoring element by laser welding, said rods or tubes radially extending outwardly from the anchoring element;
c) pre-assembling the anchoring element, by its base, to the support, by bayonet mounting the rods or tubes into the notches; and
d) welding the rods or tubes to the support material in the slots, by laser welding externally to the support.

16. The method of claim 14 , wherein the body and the support are made of stainless steel, while the anchoring element and the rods or tubes are made of titanium alloy.

Assignees

• Sorin Crm Sas

Inventors

• Régnier Willy
• Ollivier Jean-François
• D'Hiver Philippe

Classifications

• B23K2203/05

  Operations & Transport · mapped topic

• B23K26/21

  by welding · CPC title

• B23K26/323

  involving parts made of dissimilar metallic material · CPC title

• A61N1/0575 Primary

  with drug delivery · CPC title

• A61B5/6882 Primary

  Anchoring means · CPC title