# US 8,540,747 B2 · K-wire and method for surgical procedures

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- Number: US 8,540,747 B2
- Document ID: US8540747B2
- Status: Granted
- Kind: B2
- Application number: 13/722,641
- Filed: 2012-12-20
- Published: 2013-05-02
- Granted: 2013-09-24
- Earliest claimed: 2009-06-26
- Assignees: Safe Wire Holdings, LLC
- Applicants: Wyatt Drake Geist; Arden Allen Geist, Sr.
- Inventors: Wyatt Drake Geist; Arden Allen Geist, Sr.
- Web page: https://patentgrep.com/patent/US8540747B2

## CPC

- A61B 17/8897: {Guide wires or guide pins}
- A61B 2017/564: {Methods for bone or joint treatment}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A surgical guide wire or K-wire and method of use are provided. The K-wire or guide wire has opposite end portions and a shank portion in between. One end portion has a deformable end portion that, once outside of a confining guide passage, can be deformed to present a projected forward facing area that is larger than the transverse cross section of the K-wire or guide wire while in the passage. The increased area will provide increased resistance to additional forward axial movement into the surgical site.

## Claims

### Claim 1

A method of conducting a medical procedure on bone tissue using a guide wire, the method including: placing a surgical tool end at a surgical site within bone tissue, said surgical tool having a through bore, said through bore terminating in an opening at the distal end of said surgical tool; traversing a guide wire in a first configuration to said surgical site by passing said guide wire through said through bore, said guide wire having an operative end portion; deforming a portion of said operative end portion to a second configuration after its exit from said through bore such that said deformed portion presents a projected area that is greater than the cross sectional area of the guide wire when traversing through said through bore, said deformed portion resisting forward traversal through said bone tissue; removing said guide wire from said surgical site, whereby said deformation is substantially reversible by reversing the traversal direction of said guide wire; said operative end portion includes a pair of opposed legs, said legs predisposed to move in an outward direction with respect to each other, wherein said legs diverge outwardly from a common area; a gap between said legs, wherein extending said gap length increases the speed upon which said legs diverge from each other within said bone tissue; one of said opposed legs is longer than the other and includes a tip portion that is constructed to overlap a tip portion of the second leg, wherein a first end portion of said one of said opposed legs includes a groove located near free end of said first end portion; a second end portion of other leg includes a projection located at free end of said second end portion, wherein said groove permits said projection to fit therein when in said first configuration.

### Claim 2 (depends on 1)

The method of claim 1 wherein the deforming occurs automatically.

### Claim 3 (depends on 1)

The method of claim 1 wherein the deforming is induced by increasing the temperature of the operative end portion.

### Claim 4 (depends on 1)

The method of claim 1 wherein the operative end portion has a deformable portion constructed of memory metal alloy.

### Claim 5 (depends on 1)

The method of claim 1 wherein the operative end portion has a deformable portion constructed of a spring material.

### Claim 6 (depends on 1)

The method of claim 1 wherein said forward traversal of said guide wire through said bone tissue causes outward deflection of said deformable portion further increasing said projected area.

### Claim 7 (depends on 6)

The method of claim 6 wherein said surgical tool is a jamshidi needle.

### Claim 8 (depends on 1)

The method of claim 1 wherein said operative end portion of said guide wire includes at least one laterally extending end portion.