Surgical device having interchangeable components and methods of use

• US 20070260257A1
• Filed: 03/30/2007
• Published: 11/08/2007
• Est. Priority Date: 07/11/2005
• Status: Active Grant

• Current Assignee: Kyphon SARL (Medtronic Plc)
• Original Assignee: Kyphon SARL (Medtronic Plc)
• Inventors: Phan, Christopher
• Granted Patent: US 8,021,365 B2
• Time in Patent Office: Days
• US Class Current: 606/84
• CPC Class Codes: A61B 17/16 Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans arthroscopic bone cutters A61B17/320016; dental implant drills potentially for other surgical use A61C8/0089; bone grinders A61F2/4644, A22C17/06; A61B17/1662 takes precedence over all other subgroups except A61B17/17
• CPC Class Codes: A61B 17/1617 with mobile or detachable parts
• CPC Class Codes: A61B 17/1671 for the spine
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 17/8875 Screwdrivers, spanners or wrenches
• CPC Class Codes: A61B 2017/00261 Discectomy
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/2929 with a head rotatable about the longitudinal axis of the shaft
• CPC Class Codes: A61B 2090/031 torque limiting
• CPC Class Codes: A61B 90/03 Automatic limiting or abutting means, e.g. for safety
• CPC Class Codes: A61C 1/186 with torque adjusting or limiting means
• CPC Class Codes: B25B 23/1427 by mechanical means

Abstract

A surgical device, kit, and/or method for interchanging components of the surgical device can include a handle, a docking assembly, a shaft assembly, a coupler assembly, and a surgical implement. The handle can have a lever pivotably connected to the handle, and the docking assembly secured to the handle. The docking assembly can include a docking rod operably attached to the lever and axially slidable within the docking assembly. The shaft assembly can include a shaft rod axially slidable within a detachable shaft and removably attachable to the docking rod. The coupler assembly can be adapted to releasably secure the shaft assembly to the docking assembly. The surgical implement can be attached to a distal end of the shaft rod operable with the lever. The shaft assembly and surgical implement may be interchanged on the handle with other shaft assemblies and surgical implements.

Claims

1. A surgical device comprising:

a handle having a lever pivotably connected thereto;

a docking assembly secured to the handle and having a docking rod operably attached to the lever and axially slidable within the docking assembly;

a shaft assembly comprising a shaft rod axially slidable within a detachable shaft and removably attachable to the docking rod;

a coupler assembly adapted to releasably secure the shaft assembly to the docking assembly; and

a surgical implement attached to a distal end of the shaft rod operable with the lever.

2. The device of claim 1, further comprising internal threads in the distal end of the docking rod, and external threads on the proximal end of the shaft rod adapted to matingly thread into and out of the internal threads in the docking rod.

3. The device of claim 1, the docking assembly further comprising a docking assembly housing and a projection extending at a substantially 90 degree angle from the docking rod and in contact with the docking assembly housing so as to prevent the docking rod from rotating within the docking assembly housing.

4. The device of claim 1, further comprising external threads on a distal end of the docking assembly, and the coupler assembly further comprising a coupler cap having internal threads adapted to matingly thread onto and off of the external threads of the docking assembly.

5. The device of claim 1, wherein the shaft assembly further comprises a shaft shoulder attached to a proximal end of the detachable shaft and adapted to abut against a distal surface of the docking assembly, and wherein the coupler assembly further comprises a sleeve fixedly attachable about the proximal end of the detachable shaft and a coupler cap axially slidable about the sleeve over the shaft shoulder and onto the docking assembly and adapted to secure the shaft assembly to the docking assembly.

6. The device of claim 4, wherein the coupler assembly further comprises a cap retention mechanism adapted to maintain the coupler cap about the coupler assembly sleeve.

7. The device of claim 4, further comprising external threads on a distal end of the docking assembly, the external threads having a thread notch, the shaft shoulder further comprising a shoulder flat, and the coupler assembly further comprising a thread key extending from a proximal end of the coupler assembly sleeve, wherein the thread key is alignable with the shoulder shaft and insertable into the thread notch so as to orient the surgical implement relative to the handle and prevent the shaft assembly and surgical implement from rotating.

8. The device of claim 1, further comprising a plurality of shaft assemblies, each shaft assembly having a different configuration and removably attachable to the docking assembly.

9. The device of claim 1, wherein the surgical implement comprises a curette tip.

10. A surgical device comprising:

a handle; and

an elongated member configured such that a distal end of the elongated member can be percutaneously placed into a tissue in a patient'"'"'s body, the elongated member configured to releasably extend from the handle.

11. The device of claim 10, further comprising a plurality of the elongated members, each elongated member having a different configuration and removably attachable to the handle.

12. The device of claim 10, further comprising a docking mechanism secured to the handle for docking the elongated member to the handle.

13. The device of claim 10, further comprising a coupler mechanism adapted to releasably secure the elongated member to the handle.

14. The device of claim 10, wherein the distal end of the elongated member is configured to scrape bone.

15. A kit comprising:

a surgical device handle comprising a lever pivotably connected to the handle, and a docking assembly secured to the handle and having a docking rod operably attached to the lever and axially slidable within the docking assembly;

a plurality of shaft assemblies, each shaft assembly comprising a shaft rod axially slidable within a detachable shaft and removably attachable to the docking rod; and

a coupler assembly adapted to releasably secure each shaft assembly to the docking assembly.

16. The kit of claim 15, further comprising a surgical implement attached to a distal end of the shaft rod of each shaft assembly and operable with the lever.

17. The kit of claim 16, wherein the surgical implement attached to the shaft rod of each shaft assembly comprises a different surgical implement.

18. A method of using a surgical device, comprising:

providing a surgical device handle having a lever pivotably connected thereto, and a docking assembly secured to the handle and having a docking rod operably attached to the lever and axially slidable within the docking assembly;

providing a plurality of shaft assemblies, each shaft assembly comprising a shaft rod axially slidable within a detachable shaft and removably attachable to the docking rod, a coupler assembly adapted to releasably secure each shaft assembly to the docking assembly, and a surgical implement attached to a distal end of the shaft rod operable with the lever; and

selecting a first of the plurality of shaft assemblies;

removably attaching the shaft rod of the first shaft assembly to the docking rod;

releasably securing the first shaft assembly to the docking assembly with the coupler assembly; and

manipulating the handle and lever to operate the first shaft assembly surgical implement.

19. The method of claim 18, further comprising:

selecting a second of the plurality of shaft assemblies;

releasing the first shaft assembly from the docking assembly;

removing the shaft rod of the first shaft assembly from the docking rod;

removably attaching the shaft rod of the second shaft assembly to the docking rod;

releasably securing the second shaft assembly to the docking assembly with the coupler assembly; and

manipulating the handle and lever to operate the second shaft assembly surgical implement.

20. The method of claim 18, the docking rod having internal threads in the distal end of the docking rod, the shaft rod of each shaft assembly having external threads on the proximal end of the shaft rod, the removably attaching the shaft rod to the docking rod further comprising threading the shaft rod into the internal threads of the docking rod.

21. The method of claim 18, the docking assembly having external threads on a distal end of the docking assembly, the coupler assembly further comprising a coupler cap having internal threads, the releasably securing the first shaft assembly to the docking assembly with the coupler assembly further comprising threading the coupler cap onto the external threads of the docking assembly.

22. The method of claim 21, the docking assembly external threads having a thread notch, the detachable shaft of each shaft assembly further comprising a shaft shoulder attached to a proximal end of the detachable shaft and having a shoulder flat, and the coupler assembly further comprising a thread key extending from a proximal end of the coupler assembly, the releasably securing the first shaft assembly to the docking assembly with the coupler assembly further comprising aligning the thread key with the shoulder shaft and inserting the thread key into the thread notch so as to prevent the shaft assembly from rotating.

23. A method comprising:

inserting percutaneously into a tissue in a patient'"'"'s body a first elongated member having an operable distal portion and releasably extending from a handle;

placing at least the distal portion of the first elongated member into the tissue;

operating the distal portion of the first elongated member in the tissue;

removing the first elongated member from the tissue;

releasing the first elongated member from the handle;

attaching a second elongated member having an operable distal portion to the handle;

inserting percutaneously into the tissue at least the distal portion of the second elongated member; and

operating the distal portion of the second elongated member in the tissue.

24. The method of claim 23, the handle further comprising a lever adapted to be coupled to the distal portions of the first and second elongated members, wherein the operating the distal portions of the first and the second elongated members in the tissue further comprises actuating the lever.

25. The method of claim 23, wherein the operating the distal portions of the first and the second elongated members in the tissue further comprises rotating the distal portions axially.

26. The method of claim 23, wherein the operating the distal portions of the first and the second elongated members in the tissue further comprises displacing a cancellous bone within a bone.

27. The method of claim 23, wherein the operating the distal portions of the first and the second elongated members in the tissue further comprises scraping bone.