Apparatus and system for implanting an autonomous intracardiac capsule
First Claim
1. A system for implantation of a capsule in a wall of the heart cavity, comprising:
- an autonomous capsule having a cylindrical body and at least one coupling finger secured to the cylindrical body and extending radially outward therefrom, wherein the cylindrical body comprises a projecting helical anchoring screw extending axially from one end of the cylindrical body, and wherein the anchoring screw comprises a plurality of coils having a helix direction; and
an implantation accessory having a proximal end and a distal end, the implantation accessory comprising a lead body and a helical guide extending axially from the lead body;
wherein the helical guide has an inner diameter that allows the capsule to be positioned within the inner diameter of the helical guide; and
wherein the helical guide comprises a plurality of coils having a second helix direction that is opposite to the first helix direction of the anchoring screw.
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Accused Products
Abstract
A system and method for implantation of an autonomous intracardiac capsule. The autonomous capsule includes a cylindrical body with an anchoring screw for penetrating a tissue wall, and at least one coupling finger radially projecting outwards. An implantation accessory includes a lead body and a helical guide, for guiding and driving by rotation the capsule. This helical guide is integral with the lead body, and its inner diameter is sufficient to contain that cylindrical body of the capsule therein. The helix direction of the helical guide is opposite to that of the anchoring screw such that continued rotational motion imparted on the lead body drives the anchoring screw into the target tissue and then emerges the capsule from the helical guide. The helical guide is resiliently compressible in axial direction, and its helix pitch is increased in the free distal end portion.
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Citations
23 Claims
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1. A system for implantation of a capsule in a wall of the heart cavity, comprising:
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an autonomous capsule having a cylindrical body and at least one coupling finger secured to the cylindrical body and extending radially outward therefrom, wherein the cylindrical body comprises a projecting helical anchoring screw extending axially from one end of the cylindrical body, and wherein the anchoring screw comprises a plurality of coils having a helix direction; and an implantation accessory having a proximal end and a distal end, the implantation accessory comprising a lead body and a helical guide extending axially from the lead body; wherein the helical guide has an inner diameter that allows the capsule to be positioned within the inner diameter of the helical guide; and wherein the helical guide comprises a plurality of coils having a second helix direction that is opposite to the first helix direction of the anchoring screw. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An autonomous intracardiac capsule, comprising:
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a cylindrical body and at least one coupling finger secured to the cylindrical body and extending radially outward therefrom; the cylindrical body having an outside diameter and, at a distal end, a projecting helical anchoring screw axially extending from the cylindrical body, to penetrate tissue of the wall of a cavity of the heart, the anchoring screw having a plurality of coils having a helix direction; the cylindrical body configured to be received by a helical guide on an implantation accessory having a helix direction that is opposite to the helix direction of the anchoring screw, and the at least one coupling finger configured to engage with the helical guide. - View Dependent Claims (13, 14, 15)
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16. A method of implanting an autonomous capsule in a tissue wall, comprising:
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providing a capsule for implantation by an implantation accessory, wherein the capsule comprises a cylindrical body and at least one coupling finger secured to the cylindrical body and extending radially outward therefrom, wherein the cylindrical body comprises a projecting helical anchoring screw extending axially from one end of the cylindrical body, and wherein the anchoring screw comprises a plurality of coils having a helix direction; wherein the implantation accessory comprises a lead body and a helical guide having a helix direction opposite of the helix direction of the anchoring screw; preparing the capsule for implantation by engaging the at least one coupling finger of the capsule with the helical guide and positioning the cylindrical body within the helical guide, wherein the at least one coupling finger is positioned such that as the capsule is engaged with the helical guide the helix is compressed; introducing the implantation accessory containing the capsule into a cavity of a body; positioning the anchoring screw at the target tissue wall and engaging the anchoring screw with the target tissue by imparting rotational movement on the lead body; once the anchoring screw has been engaged with the target tissue and the cylindrical body abuts the target tissue, continuing to impart rotational movement on the lead body, utilizing the opposite helix direction of the anchoring screw and the helical guide, to thereby rotate the helical guide about the cylindrical body to emerge the cylindrical body from the implantation accessory. - View Dependent Claims (17, 18, 19, 20, 21, 23)
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22. The method of 18, further comprising removing the implantation accessory from the body.
Specification