Guidewire and method for surgical procedures
View Patent ↗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.
1. A guide wire for use in a surgical procedure, the guide wire comprising: a manipulative end portion, an operative end portion and a center shank portion in between, the operative end portion having a first configuration for transfer through a guide passage and a second configuration when outside said guide passage, said second configuration presenting a larger projected transverse area than the first configuration, said operative end portion being constructed to provide for substantial recoverable deformation from the second configuration back to the first configuration upon axial movement of the guide wire through a through bore of a surgical device; said operative end portion comprising: two deformable ends which are deflected outwardly from a longitudinal axis of the guide wire, wherein each of said two deformable ends comprising a free end, a free length portion and a bend in between, wherein said free end is bendable outwardly at said bend and configured to engage bone or tissue, and said free length portion is located between said center shank portion and said bend and configured to allow additional flexibility to said free end; a groove width is provided between free length portions of said two deformable ends and extends along said longitudinal axis of the guide wire; a gripper teeth provided on inner side of said free end and configured to engage bone or tissue; wherein location of said bend, length of said free end and diameter of said guide wire can be vary to cause variations in width of the larger projected transverse area and permit significant control over deployment of the guide wire.
2. The guide wire of claim 1 wherein the operative end portion has a deformable portion constructed from a memory metal alloy.
3. The guide wire of claim 2 wherein the memory metal alloy includes Nitinol.
4. The guide wire of claim 1 wherein said operative end portion has a deformable portion made of a resiliently deformable spring material.
5. The guide wire of claim 1 wherein said operative end portion has a deformable portion made of a plastically deformable material.
6. The guide wire of claim 1 wherein the projected transverse area at least about 1.5 times the area of the first configuration.