# US 10,307,601 B2 · Attachment mechanism for a fixation member of an implantable device

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- Number: US 10,307,601 B2
- Document ID: US10307601B2
- Status: Granted
- Kind: B2
- Application number: 14/950,007
- Filed: 2015-11-24
- Published: 2016-03-24
- Granted: 2019-06-04
- Earliest claimed: 2010-10-29
- Assignees: Medtronic, Inc.
- Applicants: Medtronic, Inc.
- Inventors: Kamal Deep Mothilal; George Patras; Albert H. Dunfee
- Web page: https://patentgrep.com/patent/US10307601B2

## CPC

- A61B 5/0215: by means inserted into the body
- A61B 5/6876: {Blood vessel}
- A61B 5/6882: {Anchoring means}
- A61N 1/057: {Anchoring means; Means for fixing the head inside the heart}
- A61N 1/37512: {Pacemakers}
- A61N 1/37516: {Intravascular implants}
- A61N 1/37518: {Anchoring of the implants, e.g. fixation}
- A61N 1/37205: {Microstimulators, e.g. implantable through a cannula}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B)

## Abstract

A fixation member configured to anchor an implantable medical device within a patient is attached to an implantable medical device by introducing at least a portion of the fixation member in a tube mechanically connected to the medical device, and plastically deforming the tube in order to pinch the fixation member within a hollow space of the tube.

## Claims

### Claim 1

A method comprising:
positioning a fixation member for a medical device in a hollow space defined by a tube configured to be mechanically connected to the medical device, the tube comprising a first end, a second end, a side surface extending between the first end and the second end, and a central longitudinal axis; and
applying a force directed radially toward the central longitudinal axis of the tube to the side surface of the tube to plastically deform the tube to pinch the fixation member within the hollow space.

### Claim 2 (depends on 1)

The method of claim 1 further comprising mechanically connecting the tube to the medical device.

### Claim 3 (depends on 2)

The method of claim 2, wherein mechanically connecting the tube to the medical device comprises at least one of welding or adhering the tube to the medical device.

### Claim 4 (depends on 1)

The method of claim 1 further comprising fabricating at least a portion of the medical device integral with the tube.

### Claim 5 (depends on 1)

The method of claim 1, wherein applying a force to plastically deform the tube to pinch the fixation member within the hollow space is executed by automated machinery.

### Claim 6 (depends on 1)

The method of claim 1, wherein the automated machinery indexes and positions the tube and the fixation member with respect to one another before applying the force.

### Claim 7

An attachment mechanism for a fixation member of an implantable medical device, the attachment mechanism comprising a tube, wherein the tube comprises a first end, a second end, a side surface extending between the first end and the second end, and a central longitudinal axis, and wherein the fixation member comprises a first portion and a second portion,
wherein the first portion is configured to extend within the tube at a substantially constant outer surface diameter for at least the length of the tube and the second portion is configured to expand to push against tissue, and
wherein the tube is configured to be connected to the implantable medical device and to be plastically deformed by a force directed radially toward the central longitudinal axis of the attachment mechanism and applied to the side surface to pinch the first portion of the fixation member within a hollow space defined by the tube.

### Claim 8 (depends on 7)

The attachment mechanism of claim 7, wherein the tube comprises titanium (Ti).

### Claim 9 (depends on 8)

The attachment mechanism of claim 8, wherein the titanium comprises an American Society for Testing and Materials (ASTM) grade titanium in a range from 1 to 5.

### Claim 10 (depends on 9)

The attachment mechanism of claim 9, wherein the titanium comprises an ASTM grade titanium in a range from grade 1 to 4.

### Claim 11 (depends on 10)

The attachment mechanism of claim 10, wherein the titanium comprises an ASTM grade titanium in a range from grade 1 to 2.

### Claim 12 (depends on 8)

The attachment mechanism of claim 8, wherein the titanium comprises an American Society for Testing and Materials (ASTM) grade 23 titanium.

### Claim 13 (depends on 7)

The attachment mechanism of claim 7, wherein the tube comprises a cylindrical tube.

### Claim 14 (depends on 7)

The attachment mechanism of claim 7, wherein the tube comprises a curvilinear cross-section or a rectilinear cross-section.

### Claim 15 (depends on 14)

The attachment mechanism of claim 14, wherein the tube comprises at least one of a circular cross-section, an elliptical cross-section, or a rectangular cross section.