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 method of conducting a medical procedure on a surgical site using a guide wire, the method comprising the steps of: placing a surgical tool at a surgical site, said surgical tool having a guiding through bore which terminates in a distal end opening; passing a guide wire having a manipulative end, a center portion and an operative end through said guiding through bore, said operative end configured to be traversable between a first configuration and a second configuration configured to limit forward axial motion of said guide wire into said surgical site; and traversing said guide wire from said first configuration to said second configuration by passing said guide wire operative end beyond said opening of said through bore, said second configuration defined by said operative end having a deformed projected area that is greater than the cross sectional area of the guide wire when in said first configuration, wherein said operative end includes two equally sized deployable free ends which diverge from a common region of said guide wire, each said free end having a first linear portion and a second portion which diverges from the longitudinal axis of said guide wire at a bend, said bend positioned between said common region of said guide wire and a distal end of said free end, wherein each said bend is positioned at a predetermined location within said free end to provide a predetermined separation angle, wherein each said free end contains at least one bone or tissue engagement member.
2. The method of conducting a medical procedure on a surgical site using a guide wire according to claim 1 further including the step of traversing said guide wire from said second configuration to said first configuration by retracting said guide wire from said surgical site, whereby retracting said operative end from a position extending past said opening of said surgical tool to a position within said through bore results in a cross sectional area that is less than the area of said projected area when in said second configuration.
3. The method of conducting a medical procedure on a surgical site using a guide wire according to claim 1 wherein said treatment site is bone or bone tissue.
4. The method of conducting a medical procedure on a surgical site using a guide wire according to claim 1 wherein said tissue engagement member includes a plurality of teeth provided on an inner surface of the free end.
5. The method of conducting a medical procedure on a surgical site using a guide wire according to claim 1 wherein said bend of each said free end is positioned closer to said distal end of said free end.
6. The method of conducting a medical procedure on a surgical site using a guide wire according to claim 1 wherein said bend of each said free end is positioned closer to said point where said free ends diverge from a common region of said guide wire.
7. The method of conducting a medical procedure on a surgical site using a guide wire according to claim 1 wherein each said bend is positioned at a predetermined location within said free ends to provide an angle of at least 30 degrees.
8. The method of conducting a medical procedure on a surgical site using a guide wire according to claim 1 wherein each said bend is positioned at a predetermined location within said free ends to provide an angle of at least 50 degrees.
9. The method of conducting a medical procedure on a surgical site using a guide wire according to claim 1 wherein each said free end is constructed from a flexible material.
10. The method of conducting a medical procedure on a surgical site using a guide wire according to claim 1 wherein each said free end is constructed from a memory metal alloy.
11. The method of conducting a medical procedure on a surgical site using a guide wire according to claim 1 wherein said memory metal alloy is a super-elastic material.
12. The method of conducting a medical procedure on a surgical site using a guide wire according to claim 1 wherein the memory metal alloy includes Nitinol.
13. The method of conducting a medical procedure on a surgical site using a guide wire according to claim 1 wherein each said deployable end is constructed from a memory metal alloy.
14. The method of conducting a medical procedure on a surgical site using a guide wire according to claim 1 wherein each said deployable end is constructed of a resiliently deformable spring material.
15. The method of conducting a medical procedure on a surgical site using a guide wire according to claim 1 wherein each said deployable end has a deformable portion made of a plastically deformable material.
16. The method of conducting a medical procedure on a surgical site using a guide wire according to claim 1 wherein each said free end is self deployable.