Device for connecting surgical clearing or drilling tool components

Claim 2

1 . A device for the coaxial connection of a surgical rotating tool to a shaft comprising: a shaft extending along a central axis from a front end to a rear end; a hollow body having a first end for engaging the front end of the shaft and a second end for engaging the tool, the hollow body further having a wall defining a cavity coaxial to the central axis, the wall having at least one plastically deformed impression defining at least one projection in communication with the cavity; and wherein at least one projection is engaged with the shaft to produce a rotatively and axially fixed connection between the shaft and the hollow body.

Claim 3

2 . The device of claim 1 , wherein the shaft is substantially circular cylindrical having a first diameter, the cavity is substantially circular cylindrical having a second diameter, wherein first and second diameters are dimensioned such that a close sliding fit is formed between the shaft and the cavity.

Claim 4

3 . The device of claim 1 , wherein the shaft is elastically deformed by the at least one projection.

Claim 5

4 . The device of claim 1 , wherein the shaft is plastically deformed by the at least one projection.

Claim 6

5 . The device of claim 1 , further comprising an axial stop for limiting the introduction of the shaft into the cavity, the axial stop being at a predetermined depth from the first end.

Claim 7

6 . The device of claim 1 , wherein the wall of the hollow body has a thickness between 0.1 mm and 1.0 mm.

Claim 8

7 . The device of claim 1 , wherein the at least one projection has a height of 0.05 mm to 0.70 mm measured from the wall toward the central axis.

Claim 9

8 . The device of claim 1 , wherein the hollow body and the surgical rotating tool are formed integrally.

Claim 10

9 . The device of claim 1 , wherein the rotating tool is a surgical clearing and drilling tool.

Claim 11

10 . A device for the coaxial connection of a surgical rotating tool to a shaft comprising: a substantially circular cylindrical member having a first end including a wall, the wall having an outer and inner surface, the inner surface defining a substantially circular cylindrical chamber having a central axis, the cylindrical member further having a second end for coupling to the tool; a shaft having a front end, the front end slidably engageable with the chamber; and wherein the outer surface of the wall has at least one impression corresponding to at least one projection on the inner surface in communication with the chamber such that the at least one projection engages the front end of the shaft to form a rotatively and axially locking connection between the shaft and the cylindrical member.

Claim 12

10 . A device for the coaxial connection of a surgical rotating tool to a shaft comprising: a substantially circular cylindrical member having a first end including a wall, the wall having an outer and inner surface, the inner surface defining a substantially circular cylindrical chamber having a central axis, the cylindrical member further having a second end for coupling to the tool; a shaft having a front end, the front end slidably engageable with the chamber; and wherein the outer surface of the wall has at least one impression corresponding to at least one projection on the inner surface in communication with the chamber such that the at least one projection engages the front end of the shaft to form a rotatively and axially locking connection between the shaft and the cylindrical member.

Claim 13

11 . A method of forming a fixed connection of a surgical rotating tool to a shaft, the method comprising the steps of: providing a shaft having a substantially circular cylindrical front end having a first diameter; providing a substantially circular cylindrical member having a first end including a wall, the wall having an outer and inner surface, the inner surface defining a substantially circular cylindrical chamber having a central axis and a second diameter, the cylindrical member further having a second end for coupling to the tool; inserting the front end of the shaft into the chamber, the diameters being dimensioned such that a sliding fit is formed between the shaft and the chamber; deforming the outer surface of the wall and forming at least one projection on the inner surface of the wall, the projection engaging the front end of the shaft thereby deforming the front end of the shaft to produce a rotatively and axially locking connection between the shaft and the cylindrical member.

Claim 14

11 . A method of forming a fixed connection of a surgical rotating tool to a shaft, the method comprising the steps of: providing a shaft having a substantially circular cylindrical front end having a first diameter; providing a substantially circular cylindrical member having a first end including a wall, the wall having an outer and inner surface, the inner surface defining a substantially circular cylindrical chamber having a central axis and a second diameter, the cylindrical member further having a second end for coupling to the tool; inserting the front end of the shaft into the chamber, the diameters being dimensioned such that a sliding fit is formed between the shaft and the chamber; deforming the outer surface of the wall and forming at least one projection on the inner surface of the wall, the projection engaging the front end of the shaft thereby deforming the front end of the shaft to produce a rotatively and axially locking connection between the shaft and the cylindrical member.