Orthopedic implant insertion handle and aiming guide
View Patent ↗An orthopaedic implant insertion instrument including an insertion handle and a radiolucent aiming guide and method of using same. The insertion handle may be formed of steel and is used for inserting an orthopaedic implant, such as an intramedullary nail or bone plate, into a patient. The radiolucent aiming guide is used to properly locate and guide a drill and/or other insertion instruments for installing fixation elements, such as screws, pins, nails, bolts, blades, etc., through the orthopaedic implant and into the affected bone to secure the implant in position and facilitate healing. The aiming guide is substantially hollow and tubular and is preferably formed of a carbon fiber material.
1. A radiolucent orthopedic implant insertion instrument comprising:
an insertion handle including a proximal end configured to couple to a distal end of an orthopedic implant; and
an aiming guide including a proximal end configured to couple to a distal end of the insertion handle so that the aiming guide extends distally therefrom, the aiming guide being formed as a substantially hollow structure of radiolucent material and having a plurality of transverse bores formed therethrough, the transverse bores being positioned and oriented so that, when the insertion handle is coupled to an implant and to the aiming guide, the transverse bores align with a target feature of the implant in such a way that axes of the transverse bores intersect the target feature and each respective transverse bore without intersecting a surface of any of the transverse bores, wherein the transverse bores have overlapping diameters.
2. The instrument of claim 1 , wherein the aiming guide is a tube of substantially circular cross-section.
3. The instrument of claim 1 , wherein the aiming guide is a tube of polygonal cross section.
4. The instrument of claim 1 , wherein the aiming guide has an open cross-section.
5. The instrument of claim 1 , wherein the aiming guide is removably connectable to the insertion handle.
6. The instrument of claim 5 , wherein the aiming guide is formed of carbon fiber.
7. The instrument of claim 5 , further comprising a coupling and a threaded coupling nut a first end of which engages one of the proximal end of the aiming guide and the distal end of the insertion handle, a second end of the coupling nut including an internal thread for engaging a threaded surface on the other of the distal end of the insertion handle and the proximal end of the aiming guide to secure the insertion handle to the aiming guide.
8. The instrument of claim 7 , wherein the proximal end of the aiming guide includes an opening sized and shaped to slidably receive therein a distal end of a coupling, a proximal end of the coupling being coupled to the distal end of the insertion handle when in an operative configuration, the threaded portion being formed on the insertion handle proximally of the distal end thereof which is coupled to the coupling, the aiming guide further including a fastener receiving opening-which, when the distal end of the coupling is received within the proximal end of the aiming guide in a desired orientation, aligns with a fastener receiving bore extending through the distal end of the coupling.
9. The instrument of claim 1 , wherein proximal and distal portions of the aiming guide are angled with respect to a substantially linear middle portion thereof.
10. The instrument of claim 9 , wherein the distal portion of the aiming guide has a first wall thickness and the proximal portion of the aiming guide has a second wall thickness, and the first wall thickness being greater than the second wall thickness.
11. The instrument of claim 10 , wherein the first wall thickness is approximately 4.5 mm and the second wall thickness is approximately 4 mm.
12. The instrument of claim 1 , wherein the insertion handle includes at least one bore for aligning a drill.
13. The instrument of claim 1 , wherein the insertion handle is formed of stainless steel, titanium, or titanium alloy.
14. A radiolucent orthopedic implant insertion instrument comprising:
an insertion handle having a proximal portion configured and dimensioned for removable connection to a distal portion of an orthopaedic implant; and
an aiming guide formed as a substantially hollow structure of radiolucent material and having a plurality of transverse bores formed therethrough, the aiming guide having a proximal portion configured and dimensioned for connection to a distal end of the insertion handle so that the aiming guide extends distally therefrom, a distal portion and a substantially linear middle portion disposed between the proximal and distal portions, wherein the proximal and distal portions are substantially tubular, wherein when the insertion handle is coupled to an implant and to the aiming guide, the transverse bores align with a respective target feature of the implant in such a way that axes of the transverse bores intersect the respective target feature and the transverse bores without intersecting a surface of any of the transverse bores, wherein the transverse bores have overlapping diameters.
15. The instrument of claim 14 , wherein the aiming guide is formed of carbon fiber.
16. The instrument of claim 15 , wherein the distal portion has a first wall thickness and the proximal portion has a second wall thickness, and the first wall thickness is being greater than the second wall thickness.
17. The instrument of claim 15 , wherein the middle portion of the aiming guide has at least one linear slot formed therethrough.
18. The instrument of claim 15 , wherein the transverse bores are configured for locating and aligning a drill or implant insertion tool.
19. The instrument of claim 15 , wherein one of the distal end of the insertion handle and the proximal end of the aiming guide includes and a threaded coupling nut and the other of the distal end of the insertion handle and the proximal end of the aiming guide includes a threaded portion configured and dimensioned to be secured within the coupling nut to secure the insertion handle to the aiming guide.
20. The instrument of claim 19 , wherein the proximal end of the aiming guide includes an opening sized and shaped to slidably receive therein a distal end of a coupling, a proximal end of the coupling being coupled to the distal end of the insertion handle when in an operative configuration, the threaded portion being formed on the insertion handle proximally of the distal end thereof which is coupled to the coupling, the proximal portion of the aiming guide further including which, when the distal end of the coupling is received within the proximal end of the aiming guide in a desired orientation, aligns with a fastener receiving bore extending through the distal end of the coupling.