Hollow small diameter tool holder for surgical use
View Patent ↗A surgical tool holder comprises a shank having first driveable end and second coupling end, the second end comprising a coupling device having interfaces for mating with corresponding structures on the inside of a hollow surgical tool, a first interface mating with a centering structure near a base end of the tool and a second interface mating with a second structure adjacent to a forward end of the tool, the tool being held in functional assembly to the shank by a releasable locking mechanism comprised of a locking sleeve slideably disposed about the shank, a spring biased against the coupling device by the locking sleeve, and a connection device retaining the locking sleeve in a fixed position during use, whereupon release of the connection device enables quick disassembly of the locking sleeve, spring and coupling device for cleaning and component sterilization.
1. A surgical tool holder comprising a shank having first driveable end and second coupling end, the second end comprising a coupling device having interfaces for mating with corresponding structures of a hollow surgical tool, a first interface mating with a centering structure near a base end of the tool and a second interface mating with a second structure adjacent to an opposite apex end of the tool and distal from the base end of the tool, the tool being held in functional assembly to the shank by a releasable locking mechanism comprised of a locking sleeve slideably disposed about the shank, a spring biased against the coupling device by the locking sleeve, and a connection device retaining the locking sleeve in a fixed position during use, whereupon release of the connection device enables quick removal of the locking sleeve, spring and coupling device for cleaning and component sterilization, and wherein the second interface is a transverse bayonet recess in the end of the shank and which mates with a cross bar.
2. The surgical tool holder of claim 1 , wherein the coupling device comprises a locking device for locking the tool onto the shank.
3. The surgical tool holder of claim 2 , wherein the locking device is disposed in the coupling end of the shank.
4. The surgical tool holder of claim 2 , wherein the locking device comprises at least one centering shoulder structure keyed to the tool.
5. The surgical tool holder of claim 4 , wherein the at least one centering structure is a flange.
6. The surgical tool holder of claim 4 , wherein the centering shoulder structure comprises at least three circumferentially spaced apart centering pins, wherein the centering pins are keyed to contours in the capture sleeve.
7. The surgical tool holder of claim 1 , wherein the coupling device comprises a capture sleeve against which the spring is biased by the locking sleeve, the capture sleeve being slideable along the shank, constrained to rotate with the shank and having at least one contour for mating with a corresponding contour on the centering structure.
8. The surgical tool holder of claim 7 , wherein the corresponding contour on the centering structure is an exterior surface of a centering pin.
9. The surgical tool holder of claim 7 , wherein the centering structure is a flange attached to a locking sleeve.
10. The surgical tool holder of claim 9 , wherein the flange mates with a locking structure on the tool.
11. The surgical tool holder of claim 7 , wherein when the locking sleeve is unlocked and slid back along the shank, cleaning access to all surfaces of the locking mechanism is facilitated.
12. The surgical tool holder of claim 7 , wherein the locking device comprises contours in the capture sleeve which mate with three circumferentially spaced apart centering pins attached to the tool.
13. The surgical tool holder of claim 1 , wherein a handle is attached to the connection device.
14. The surgical tool holder of claim 1 , wherein the second interface is a recess in a forward end of the shank.
15. The surgical tool holder or claim 1 , wherein the spring is a helical compression spring.
16. The surgical tool holder of claim 1 , wherein the connection device comprises a bayonet mechanism.
17. The surgical tool holder of claim 16 , wherein the bayonet mechanism is comprised of a bayonet slot and a locking pin.
18. The surgical tool holder of the claim 17 , wherein the bayonet slot is disposed on the shank.
19. A small diameter hollow surgical tool for use with a tool holder, the tool having a first and second coupling interface and a centering structure near a base end of the tool, the tool holder comprising a shank having first driveable end and second coupling end, the second end comprising a coupling device having two interfaces for mating with the corresponding first and second coupling interface of the surgical tool, the first interface of the tool holder mating with the centering structure and the second interface of the tool holder mating with a cross bar distal from the base end and adjacent to an opposite apex end of the tool, and wherein the first interface of the tool holder is a flange which includes a locking interface that mates with a corresponding locking interface on the tool, to prevent relative rotation of the flange and the tool.
20. The surgical tool of claim 19 , wherein the tool is held in functional assembly to the shank by a releasable locking mechanism comprised of a locking sleeve slideably disposed about the shank, a spring biased against the coupling device by the locking sleeve, and a connection device retaining the locking sleeve in a fixed position during use, whereupon release of the connection device enables easy removal of the locking sleeve, spring and coupling device for cleaning and component sterilization.
21. A surgical tool holder for mating with corresponding structures of a hollow surgical tool comprising:
a shank having first driveable end and second coupling end,
the second end comprising a coupling device having
a first interface mating with a centering structure near a base end of the tool and
a second interface mating with a second structure adjacent to an opposite apex end of the tool and distal from the base end of the tool,
wherein the second interface is a transverse bayonet recess in the end of the shank and which mates with a cross bar, and
the tool being held in functional assembly to the shank by
a releasable locking mechanism comprised of
a locking sleeve slideably disposed about the shank,
a spring biased against the coupling device by the locking sleeve, and
a connection device retaining the locking sleeve in a fixed position during use,
whereupon release of the connection device enables quick removal of the locking sleeve, spring and coupling device for cleaning and component sterilization.