# US 2014/0190230 A1 · Nickel-titanium core guide wire

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- Number: US 2014/0190230 A1
- Document ID: US20140190230A1
- Status: Published application
- Kind: A1
- Application number: 14/209,243
- Filed: 2014-03-13
- Published: 2014-07-10
- Earliest claimed: 2010-10-28
- Assignees: Abbott Cardiovascular Systems Inc.
- Applicants: Abbott Cardiovascular Systems Inc.
- Inventors: William J. Boyle; Wayne E. Cornish; Raleigh A. Purtzer
- Web page: https://patentgrep.com/patent/US20140190230A1

## CPC

- A61M 25/09: Guide wires
- A61M 2025/09175: {having specific characteristics at the distal tip}
- Y10T 29/49986: Subsequent to metal working
- Y10T 29/5187: Wire working
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A guide wire for use in a medical procedure having a shapeable tip integral with and made from the distal end of a superelastic nitinol distal section of the guide wire, wherein the shapeable tip can be finger kinked. Such a guide wire includes an elongated core made from a superelastic nitinol alloy at the distal end, the distal end of the elongated core having a tapered section leading to a shapeable distal tip. The shapeable tip is an extension of the distal end of the nitinol distal section, and includes permanent strain hardening from at least two different radial directions imparting crystallographic texture in the radial directions that eliminate superelasticity so that permanent deformation can be achieved with finger pressure.

## Claims

### Claim at position 1

1-20. (canceled)

### Claim 21

A process for modifying a guide wire for use in a medical procedure, comprising:
cold working a binary nickel-titanium alloy wire in a range from 60% to 70% so that the superelastic properties of the wire are eliminated in favor of a linear elastic stress-strain profile.

### Claim 22 (depends on 21)

The guide wire of claim 21, wherein the wire is comprised of a 0.0032 inch wire stock.

### Claim 23 (depends on 21)

the guide wire of claim 21, wherein prior to cold working the wire, a distal section of the wire is pre-tinned.

### Claim 24 (depends on 23)

the guide wire of claim 23, wherein the pre-tinning includes application of a gold-tin coating on the distal section.