Chuck for reciprocating surgical instrument
AssigneeMedtronic Xomed, Inc.
InventorLarry D. Estes
Life of this patent
Estimating the term…
Abstract
Devices are described relating to the retaining of surgical tools within the chuck of a reciprocating surgical instrument, such as a reciprocating saw. A securing chuck is disclosed for securing a surgical tool to a reciprocating surgical instrument that comprises a shaft and a securing member. The shaft defines an axis and has a cylindrical bore extending along the axis. The bore is shaped to receive a substantially rounded tool shank. A pair of transverse slots extends into the shaft along a plane passing through the axis for receiving a substantially flattened tool shank. The transverse slots intersect with the cylindrical bore. The securing member is carried by the shaft and is radially movable relative to the bore both inwardly and outwardly to secure the surgical tool in the chuck.
Claims20
A chuck for securing a surgical tool having a shank with a securing recess to a surgical instrument, comprising:
- a shaft extending along an axis and having a receptacle for receiving the shank of the tool;
- a securing member radially movable relative to the receptacle from a first position to a second position;
- a camming sleeve positioned about the shaft and having a cam surface that moves the securing member between the first position and the second position;
- and
- a retaining sleeve configured to retain the camming sleeve relative to the shaft with at least one ball member biased outwardly from the retaining sleeve to engage the camming sleeve, wherein the camming sleeve is rotatable relative to the retaining sleeve while being retained by the retaining sleeve.
A chuck for securing a surgical tool having a shank with a securing recess to a surgical instrument, comprising:
- a shaft extending along an axis and defining a receptacle for receiving the shank of the tool;
- a securing member movable into and out of the receptacle to secure the surgical tool in the receptacle;
- a camming sleeve positioned about the shaft and having a cam surface configured to move the securing member into and out of the receptacle;
- and
- at least one ball member biased outwardly from the shaft and configured to engage the camming sleeve to retain the camming sleeve relative to the shaft.
A chuck for securing a surgical tool having a shank with a securing recess to a surgical instrument, comprising:
- a shaft extending along an axis and defining a receptacle for receiving the shank of the tool;
- a securing member movable into and out of the receptacle to secure the surgical tool in the receptacle;
- a camming sleeve positioned about the shaft and having a cam surface configured to move the securing member into and out of the receptacle;
- and
- at least one ball member biased outwardly from the shaft and configured to engage the camming sleeve to retain the camming sleeve relative to the shaft;
- wherein the securing member includes an elongated contact head and a key portion extending from the elongated contact head, a first spring positioned on one side of the key portion configured to engage the elongated contact head, and a second spring on a second side of the key portion configured to engage the elongated contact head.
A chuck for securing a surgical tool having a shank with a securing recess to a surgical instrument, comprising:
- a shaft extending along an axis and defining a receptacle for receiving the shank of the tool;
- a securing member movable into and out of the receptacle to secure the surgical tool in the receptacle;
- a camming sleeve positioned about the shaft and having a cam surface configured to move the securing member into and out of the receptacle;
- and
- at least one ball member biased outwardly from the shaft and configured to engage the camming sleeve to retain the camming sleeve relative to the shaft;
- wherein the securing member includes an elongated contact head and a key portion extending from the elongated contact head, the key portion having a shape complimentary to the securing recess in the shank.
A chuck for securing a surgical tool having a shank with a securing recess to a surgical instrument, comprising:
- a shaft extending along an axis and defining a receptacle for receiving the shank of the tool;
- a securing member radially movable relative to the receptacle from a first position to a second position and including a key portion that is complementary to the securing recess of the surgical tool;
- a retaining sleeve positioned about the shaft and defining a slot for the securing member;
- and
- a camming sleeve positioned about the retaining sleeve and including a cam surface configured to move the securing member between the first position and the second position to enable the tool to be secured or removed from the shaft in a key-less manner;
- wherein the securing member includes an elongated contact head and the key portion extending from the elongated contact head, a first spring positioned on one side of the key portion configured to engage the elongated contact head, and a second spring on a second side of the key portion configured to engage the elongated contact head.
Dependencies are inferred from the claim text.