Needlescopic instrument with reusable handle and detachable needle assembly
A surgical device may include a disposable needle assembly, a reusable handle assembly, and a retractable slide. The handle assembly may include a ratchet mechanism, a locking mechanism, an arming mechanism, and a cage. A method for inserting and releasing the disposable needle assembly from the reusable handle assembly is also disclosed herein.
1. An apparatus comprising:
a disposable needle assembly including a needle shaft having a lumen and an end effector coupled to an end effector shaft extending through the lumen; and
a reusable handle assembly including a housing, a sliding shaft, and a retraction slide,
wherein the disposable needle assembly is insertable into the reusable handle assembly to removably couple the needle shaft to the sliding shaft and to removably couple the end effector shaft to the retraction slide for independent control of the needle shaft and the end effector.
2. The apparatus of claim 1 , wherein the reusable handle assembly includes a trigger coupled to the sliding shaft configured to translate the needle shaft.
3. The apparatus of claim 2 , wherein the reusable handle includes a ratchet configured to prevent return of the trigger and the needle shaft throughout a stroke.
4. The apparatus of claim 3 , wherein the reusable handle includes a ratchet switch configured to disable the ratchet.
5. The apparatus of claim 1 , wherein the reusable handle assembly includes a spring that proximally biases the sliding shaft.
6. The apparatus of claim 1 , wherein the reusable handle assembly includes a spring that distally biases the retraction slide.
7. The apparatus of claim 1 , wherein the reusable handle assembly includes a button configured to disengage a rim from one or more grooves in the retraction slide.
8. The apparatus of claim 7 , wherein the button is spring biased, and the one or more grooves includes a first groove configured to engage the rim with the retraction slide in a distal direction and a second groove configured to engage the rim with the retraction slide in a proximal direction.
9. The apparatus of claim 1 , wherein the retraction slide includes a portion that extends out of the housing to be manipulated by a user.
10. The apparatus of claim 1 , wherein the end effector includes a pair of grasper arms.
11. The apparatus of claim 10 , wherein the sliding shaft is configured to push the needle shaft over the pair of grasper arms into a closed configuration.
12. The apparatus of claim 1 , wherein the reusable handle assembly includes a plurality of latches configured to receive and release the disposable needle assembly for removal.
13. The apparatus of claim 12 , wherein the reusable handle assembly includes a release bar configured to release the plurality of latches from the disposable needle assembly.
14. The apparatus of claim 13 , wherein the release bar includes a plurality of horizontal grooves that receive pins of the plurality of latches.
15. The apparatus of claim 13 , wherein the release bar includes a plurality of vertical grooves that receive pins connected to the housing.
16. A handle assembly configured to actuate a disposable needle assembly, the disposable needle assembly including a needle shaft having a lumen and an end effector coupled to an end effector shaft extending through the lumen, the handle assembly comprising:
a housing, a sliding shaft, and a retraction slide,
wherein the disposable needle assembly is insertable into the handle assembly to removably couple the needle shaft to the sliding shaft and to removably couple the end effector shaft to the retraction slide for independent control of the needle shaft and the end effector.
17. The handle assembly of claim 16 , further comprising a trigger coupled to the sliding shaft and configured to translate the needle shaft.
18. The handle assembly of claim 16 , further comprising a spring that proximally biases the sliding shaft.
19. The handle assembly of claim 16 , further comprising a spring that distally biases the retraction slide.
20. The handle assembly of claim 16 , further comprising a button configured to disengage a rim from one or more grooves in the retraction slide.