Handheld surgical device having retractable portion

Abstract

A handheld surgical device having a working portion that can be covered or uncovered. The working portion of the handheld surgical device can have an advanced position or a retracted position, which can be controlled by one or more switch(s) at the handle portion of the handheld surgical device. The handheld surgical device can also include a shroud that can cover the working portion having a cutting blade driven by a powered motor. The shroud can also have a cutting edge, which is not driven by the powered motor.

What is claimed is: 
     
         1 . A handheld surgical device, comprising:
 a proximal portion, including:
 a handle having a contact surface that extends along a major length of the proximal portion, and 
 a switch operable to have a cover setting and an uncover setting; and 
   a distal portion, including:
 a neck portion including a cavity therein and an outer surface that extends along a major length of the distal portion, 
 a shroud connected to the neck portion and including a cutting edge, and 
 a working portion configured to cut a bone, drill into the bone, or both cut and drill into the bone, the working portion configured to move relatively toward the proximal portion to retract or move relatively from the proximal portion to extend, wherein at least a portion of the working portion is outside the cavity when extended; and 
   wherein in the cover setting, the working portion is retracted and contained in the cavity, and in the uncover setting, the working portion is extended and disposed outside of the cavity,   wherein the proximal portion and the distal portion are separable, and   wherein the contact surface and the outer surface are aligned.   
     
     
         2 . The device of  claim 1 , wherein the shroud is cup shaped. 
     
     
         3 . The device of  claim 1 , wherein the proximal portion includes a motor and a power supply to power the motor, wherein the motor is connected to the working portion and drives the working portion. 
     
     
         4 . The device of  claim 1 , wherein the working portion includes a cutting blade. 
     
     
         5 . The device of  claim 4 , wherein the cutting blade is a twist drill, oval-shaped, matchstick-shaped, pear-shaped, or fluted ball shaped. 
     
     
         6 . The device of  claim 5 , wherein the cover setting of the switch prevents the cutting blade from performing a function and enables the shroud to function. 
     
     
         7 . The device of  claim 5 , wherein the uncover setting provides the cutting blade to perform a cutting function and disables the shroud from the cutting function. 
     
     
         8 . The device of  claim 1 , wherein the working portion is approximately from 0.5 mm to 10.0 mm. 
     
     
         9 . The device of  claim 1 , wherein the switch is operable in a direction along the major length of the proximal portion. 
     
     
         10 . The device of  claim 1 , wherein the proximal portion and the distal portion are cylindrical. 
     
     
         11 . The device of  claim 1 , wherein the proximal portion has a first connection end and the distal portion has a second connection end, the first connection end and the second connection end abutting when the proximal portion and the distal portion are connected, and the first connection end and the second connection end have a matching geometry. 
     
     
         12 . A method of using a handheld surgical device including a proximal portion having a handle having a contact surface that extends along a major length of the proximal portion, and a switch operable to have a cover setting and an uncover setting; and a distal portion having a neck portion including a cavity therein and an outer surface that extends along a major length of the distal portion, a shroud connected to the neck portion and including a cutting edge, and a working portion configured to cut a bone, drill into the bone, or both cut and drill into the bone, the working portion configured to move relatively toward the proximal portion to retract or move relatively from the proximal portion to extend, wherein at least a portion of the working portion is outside the cavity when extended, the method comprising:
 moving working portion to extend from the cavity in the neck portion of the handheld surgical device by operating the switch disposed at the proximal portion of the handheld surgical device, wherein the working portion is not covered by a shroud and is operable to cut a removal portion.   
     
     
         13 . The method of  claim 12 , further comprising:
 retracting the motor-driven cutting blade into the cavity in the neck portion of the handheld surgical device by operating the switch, wherein the cutting blade is protected by the shroud.   
     
     
         14 . The method of  claim 12 , further comprising:
 powering a motor connected to the cutting blade such that the cutting blade rotates at a speed capable of cutting bone.