Hand-held instrument holder for surgical use

• US 20040220554A1
• Filed: 05/05/2003
• Published: 11/04/2004
• Est. Priority Date: 06/24/2000
• Status: Active Grant

• Current Assignee: Viant AS&O Holdings, LLC (Viant Medical, LLC)
• Original Assignee: Precimed, Inc. (Greatbatch Incorporated)
• Inventors: Lechot, Andre, Fehlbaum, Philippe
• Granted Patent: US 7,296,804 B2
• Time in Patent Office: Days
• US Class Current: 606/1
• CPC Class Codes: A61B 17/1617 with mobile or detachable parts
• CPC Class Codes: A61B 17/1666 for the acetabulum
• CPC Class Codes: A61B 2017/00464 for use with different instruments with hole for different instruments A61B2017/22072
• CPC Class Codes: A61B 2090/0813 Accessories designed for easy sterilising, i.e. re-usable
• CPC Class Codes: Y10T 279/17717 Rotary eccentric-cam sleeve
• CPC Class Codes: Y10T 279/17752 Ball or roller jaws
• CPC Class Codes: Y10T 279/17803 Rotary cam sleeve
• CPC Class Codes: Y10T 279/32 Means to prevent jaw loosening
• CPC Class Codes: Y10T 279/3481 Tool or workpiece ejector
• CPC Class Codes: Y10T 408/907 including detailed shank
• CPC Class Codes: Y10T 408/953 Clamping jaws

Abstract

A surgical instrument holder has a shank having a coupling end, a handle attached to an opposite end of the shank, a coupling device, and a locking mechanism. The coupling end has an interface thereon for receiving an instrument. The locking mechanism has an annular locking component, a spring, a ring which slides on the shank, and a locking device. The annular locking component is mounted so as to slide along the shank. The locking device cooperates with the locking component so as to lock the instrument onto the interface. The spring biases the locking component in a locking direction and bears on the ring. The ring is disengageably lockable to the shank via a connection device so as to enable quick disassembly for cleaning and component sterilization.

Claims

1. A surgical instrument holder comprising a shank having first driveable end and second coupling end, the second end comprising a coupling device having an interface for receiving a surgical instrument and held in functional assembly to the shank by a releasable locking mechanism comprised of a ring slideably disposed about the shank, a spring biased against the coupling device by the ring, and a connection device retaining the ring in a fixed position during use, whereupon release of the connection device enables quick disassembly of the ring, spring and coupling device for cleaning and component sterilization.

2. The surgical instrument holder of claim 1, wherein the interface has a locking device for locking the instrument onto the interface.

3. The surgical instrument holder of claim 1, wherein the coupling device comprises a coupling sleeve against which the spring is biased by the ring, the sleeve being slideable about the shank so as to operate a ball-detent mechanism.

4. The surgical instrument holder of claim 1, wherein a handle is attached to the first end of the shank.

5. The surgical instrument holder of claim 1, wherein the ring locks over the coupling end of the shank, and the shank has a smaller diameter than the coupling end, so that when the ring is unlocked and slid back along the shank, cleaning access to all surfaces of the locking mechanism is facilitated.

6. The surgical instrument holder of claim 1, wherein the interface is a recess in the coupling end of the shank.

7. The surgical instrument holder of claim 6, wherein the recess is cylindrical and coaxial with a central axis of the shank.

8. The surgical instrument holder of claim 7, wherein a chamfered surface is disposed within the recess to align the instrument axially.

9. The surgical instrument holder of claim 8, wherein the chamfered surface is disposed on an annular piston which slides within the recess, biased toward the instrument by an elastic device, wherein further, a locking element prevents the annular piston from exiting the recess, the piston contacting the instrument as the instrument enters the recess prior to and as the instrument is aligned with the ball-detent, so as to enable locking of the instrument in an axially aligned configuration.

10. The surgical instrument holder of claim 1, wherein the spring is a helical compression spring.

11. The surgical instrument holder of claim 2, wherein the locking device is disposed in the coupling end of the shank.

12. The surgical instrument holder of claim 2, wherein the locking device comprises at least one ball-detent.

13. The surgical instrument holder of claim 12, wherein the locking device comprises at least three circumferentially spaced apart ball-detents.

14. The surgical instrument holder of claim 1, wherein the locking direction is toward the coupling end of the shank.

15. The surgical instrument holder of claim 1, wherein the connection device is a bayonet mechanism.

16. The surgical instrument holder of claim 15, wherein the bayonet mechanism is comprised of a bayonet slot and a locking pin.

17. The surgical instrument holder of the claim 16, wherein the bayonet slot is disposed on the shank.

18. The surgical instrument holder of claim 12, wherein the interface is a recess including a hexagonal female portion for engaging a corresponding surface of the instrument.

19. The surgical instrument holder of claim 18, wherein the ball-detent is adjacent the hexagonal female portion.

20. The surgical instrument holder of claim 19, wherein the ball-detent is received into an annular recess in the instrument, the locking component sliding over the ball detent to bias the ball into the recess to minimize play in the connection.

21. The surgical instrument holder of claim 20, wherein the holder is adapted to hold a large AO fitting.

22. The surgical instrument holder of claim 1, wherein the interface is a recess intersected by a transverse slot wherein a wall of the slot engages a corresponding flat surface of the instrument.

23. The surgical instrument holder of claim 22, wherein the recess includes a seat shaped to receive the end of the instrument about its entire circumference.

24. The surgical instrument holder of claim 23, wherein the ball-detent enters an annular groove in the instrument along an axis perpendicular to the flat surface of the instrument.

25. The surgical instrument holder of claim 24, wherein the locking component slides over the ball detent to bias the ball into the recess in order to minimize play in the connection.

26. The surgical instrument holder of claim 1, wherein the holder is adapted to hold a small AO fitting.

27. The surgical instrument holder of claim 7, wherein the shank is hollow along its length so as to provide a channel facilitating chip removal.

28. A surgical instrument holder providing a connection to a surgical instrument, comprising a shank a shank having first driveable end and second coupling end, a T-bar handle attached to the first end of the shank, a coupling device, and a locking mechanism, wherein the coupling end has an internal recess therein for receiving an instrument, wherein the locking mechanism comprises an annular locking sleeve, a helical spring, a ring which slides on the shank, and a ball-detent, the annular locking sleeve mounted so as to slide along the shank, the ball-detent being disposed in the coupling end of the shank and received into an annular recess in the instrument, the locking sleeve sliding over the ball detent to bias the ball into the recess to minimize play in the connection, wherein the spring biases the locking sleeve in a locking direction and bears on the ring, the ring being disengageably lockable to the coupling end of the shank via a bayonet mechanism comprised of a bayonet slot and a locking pin so as to enable quick disassembly for cleaning and component sterilization.