Back to results
US 10,245,043 B2Granted
Surgical drill having a brake that, upon the drill bit penetrating through bone, prevents further insertion of the drill
AssigneeStryker Corporation
InventorMark M. Xie
Life of this patent
Estimating the term…
Abstract
A surgical drill for use with a drill bit. The drill includes a handpiece with a motor and a brake mechanism. The brake mechanism is a sliding rack adjacent a first end and a second end with a stop adjacent the drill bit. An actuator is mounted to the handpiece and a plunger is coupled to the actuator. A sensor asserts a signal when the drill bit penetrates bone. When the sensor asserts the signal indicting the drill bit penetrated bone, the actuator moves the plunger into engagement with the rack to prevent further insertion of the drill bit.
Claims11
A surgical drill assembly comprising:
- a handpiece with a motor, a chuck attached to the motor for releasably holding a drill bit to the motor so the drill bit can be rotated by the motor;
- a telescoping member having opposed proximal and distal ends, a proximal section of the telescoping member moveably mounted to the handpiece to allow the telescoping member to move proximally and distally along the handpiece and a stop attached to the distal end of the telescoping member so as to be located at a distal end of the drill assembly;
- a brake assembly is attached to said handpiece, said brake assembly including a member having:
- a brake that is moveably attached to said handpiece to move between engaged and disengaged positions with the telescoping member, wherein when the brake is in the engaged position with the telescoping member, said brake stops movement of the telescoping member;
- and
- an actuator, that in response to a command signal, selectively moves said brake from the disengaged position to the engaged position;
- wherein the telescoping member comprises a plurality of teeth, and the brake comprises a plunger moveable between the engaged and disengaged positions, such that the plunger is configured to engage the teeth of the telescoping member when the plunger is in the engaged position and the plunger is configured to disengage the teeth of the telescoping member when the plunger is in the disengaged position.
4 more elements
A surgical drill assembly comprising:
- a handpiece with a motor, a chuck attached to said motor for releasably holding a drill bit to said motor so the drill bit can be rotated by the motor;
- a telescoping member having opposed proximal and distal ends, a proximal section of the telescoping member moveably mounted to the handpiece to allow the telescoping member to move proximally and distally along the handpiece and a stop attached to the distal end of the telescoping member so as to be located at a distal end of the drill assembly, where at least a portion of said telescoping member is located proximal to the drill bit and is at least partially contained in the handpiece;
- and
- a brake that is moveably attached to said handpiece to move between engaged and disengaged positions with the telescoping member, wherein when the brake is in the engaged position with the telescoping member, said brake stops movement of the telescoping member;
- and
- an actuator, that in response to a command signal, selectively moves said brake from the disengaged position to the engaged position;
- said motor has a rotor with an axially extending throughbore;
- a portion of said telescoping member is slidably disposed in the throughbore of the motor rotor and extends out of a proximal end of the motor rotor;
- and
- said brake is mounted to the handpiece so as to be located proximal to the motor so as to engage a portion of the telescoping member that extends proximally from the motor.
7 more elements
A surgical drill comprising:
- a handpiece with a motor, a chuck attached to the motor for releasably holding a drill bit to the motor so the drill bit can be rotated by the motor;
- a telescoping member having opposed proximal and distal ends, a proximal section of the telescoping member moveably mounted to the handpiece to allow the telescoping member to move proximally and distally along the handpiece, the distal end shaped to abut tissue adjacent tissue into which the drill bit bores;
- and
- a retraction assembly attached to the telescoping member and capable of, simultaneously with actuation of the motor to rotate the drill bit retracting the telescoping member proximally so the distal end of the telescoping member is retracted proximally away from a distal end tip of the drill bit, wherein said retraction assembly is connected to said motor so that said motor, simultaneously with the rotation of the drill bit, causes the retraction assembly to retract the telescoping member proximally;
- wherein the telescoping member is a sleeve that is disposed over the drill bit.
2 more elements
Dependencies are inferred from the claim text.