Medical instrument
A method includes actuating a lever to move a cannula of a medical instrument from a first extended position to second retracted position; and actuating the lever to move a stylet of the medical instrument from a third extended position to a fourth retracted position. Actuating the lever comprises moving the lever from a first lever position spaced apart from a housing of the medical instrument to a second lever position closer to the housing.
1. A method comprising:
moving a lever from a first lever position spaced apart from a housing of a medical instrument to a second lever position closer to the housing to move a cannula of the medical instrument from a cannula extended position to a cannula retracted position; and then
moving the lever from the first lever position to the second lever position to move a stylet of the medical instrument from a stylet extended position to a stylet retracted position.
2. The method of claim 1 further comprising releasing the lever after the cannula is moved to the cannula retracted position.
3. The method of claim 2 further comprising moving a linkage attached to the lever from a first linkage position in which the linkage is capable of moving the cannula to the cannula retracted position without moving the stylet to a different second linkage position in which the linkage is capable of moving the stylet to the stylet retracted position.
4. The method of claim 1 further comprising locking the lever after the stylet is moved.
5. The method of claim 1 further comprising sliding a trigger to release the stylet from the stylet retracted position.
6. The method of claim 1 further comprising pushing a trigger to release the stylet from the stylet retracted position.
7. The method of claim 1 wherein the cannula is moved to the cannula retracted position without moving the stylet.
8. A method comprising:
actuating a lever to move a cannula of a medical instrument from a cannula extended position to a cannula retracted position;
moving a linkage attached to the lever from a first linkage position in which the linkage is capable of moving the cannula to the cannula retracted position without moving a stylet to a different second linkage position in which the linkage is capable of moving the stylet to a stylet retracted position; and
actuating the lever to move a stylet of the medical instrument from a stylet extended position to the stylet retracted position, wherein actuating the lever comprises moving the lever from a first lever position spaced apart from a housing of the medical instrument to a second lever position closer to the housing.
9. The method of claim 8 further comprising locking the lever after the stylet is moved.
10. The method of claim 8 further comprising sliding a trigger to release the stylet from the stylet retracted position.
11. The method of claim 8 further comprising pushing a trigger to release the stylet from the stylet retracted position.