Modular battery powered handheld surgical instrument with motor drive

Inventors: Frederick E. Shelton, IV (Hillsboro, OH); David C. Yates (Morrow, OH); Kevin L. Houser (Springboro, OH); Jeffrey D. Messerly (Cincinnati, OH); Jason L. Harris (Lebanon, OH); Adam D. Hensel (Gahanna, OH)

Assignee: Cilag GmbH International

A61B17/320092 A61B17/320068 A61B18/1206 A61B18/1445 A61B18/1447 H01M6/02 H01M6/5044 H01M10/425 H01M10/46 H01M10/48 H01M50/20 A61B2017/003 A61B2017/00017 A61B2017/0023 A61B2017/00026 A61B2017/00039 A61B2017/0046 A61B2017/00084 A61B2017/00119 A61B2017/00123 A61B2017/00323 A61B2017/00398 A61B2017/00464 A61B2017/00477 A61B2017/00734 A61B2017/00876 A61B2017/320072 A61B2017/320073 A61B2017/320074 A61B2017/320078 A61B2017/320094 A61B2017/320095 A61B2018/0063 A61B2018/00297 A61B2018/00601 A61B2018/00607 A61B2018/00684 A61B2018/00767 A61B2018/00791 A61B2018/00827 A61B2018/00875 A61B2018/00898 A61B2018/00904 A61B2018/00946 A61B2018/00988 A61B2018/00994 A61B2018/1226 A61B2018/1455 A61B2034/252 A61B2090/061 A61B2560/0209 A61B2560/0475 A61B2562/0219 H01M2220/30

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Quick Facts

Patent No.: US 11,229,450
App. No.: 15/382,292
Granted: Jan 25, 2022
Kind: B2

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Abstract

A surgical instrument includes a handle assembly; a shaft assembly and an end effector. The shaft assembly includes an exterior shaft, a first clutch positioned within the exterior shaft to drive a first function of the surgical instrument when engaged. A second clutch within the exterior shaft to drive a second function when engaged. A rotary driver is positioned within the exterior shaft and configured to rotate within the exterior shaft. The rotary driver includes a first clutch engagement mechanism to engage the first clutch and a second clutch engagement mechanism configured to engage the second clutch independent of the first clutch engagement mechanism engaging the first clutch, such that, at different times both the first clutch and the second clutch are engaged simultaneously only the first clutch is engaged only the second clutch is engaged and neither the first clutch nor the second clutch is engaged simultaneously.

Claims (67)

1. A system comprising:

a surgical instrument comprising:

a handle assembly;

a shaft assembly coupled to the handle assembly; and

an end effector coupled to a distal end of the shaft assembly;

the shaft assembly comprising:

an exterior shaft;

a first clutch positioned within the exterior shaft and configured to drive a first function of the surgical instrument when engaged with a first clutch engagement mechanism;

a second clutch positioned within the exterior shaft and configured to drive a second function of the surgical instrument when engaged with a second clutch engagement mechanism; and

a rotary driver positioned within the exterior shaft and configured to rotate within the exterior shaft, the rotary driver comprising:

the first clutch engagement mechanism configured to engage the first clutch; and

the second clutch engagement mechanism configured to engage the second clutch independent of the first clutch engagement mechanism engaging the first clutch, such that, at different times:

the first clutch is engaged with the first clutch engagement mechanism and the second clutch is engaged with the second clutch engagement mechanism simultaneously;

only the first clutch is engaged with the first clutch engagement mechanism without the second clutch being engaged with the second clutch engagement mechanism;

only the second clutch is engaged with the second clutch engagement mechanism without the first clutch being engaged with the first clutch engagement mechanism; and

neither the first clutch nor the second clutch is engaged with the first clutch engagement mechanism or the second clutch engagement mechanism.

2. The system of claim 1 , wherein the first clutch comprises a cavity containing a first magnetorheological fluid configured to be magnetized in the presence of an electric current.

3. The system of claim 2 , wherein the first clutch engagement mechanism comprises an electrical conduit configured to cause the first clutch engagement mechanism to engage the first clutch by generating an electrical current near the first magnetorheological fluid that causes a magnetic attraction between the first clutch and the first clutch engagement mechanism.

4. The system of claim 3 , wherein:

the second clutch comprises a cavity containing a second magnetorheological fluid configured to be magnetized in the presence of an electric current; and

the second clutch engagement mechanism comprises a second electrical conduit configured to cause the second clutch engagement mechanism to engage the second clutch by generating a second electrical current that causes a magnetic attraction between the second clutch and the second clutch engagement mechanism.

5. The system of claim 1 , wherein the first function comprises a rotation of the distal end of the shaft assembly.

6. The system of claim 1 , wherein the second function comprises a closure of a pair of jaws of the end effector.

7. The system of claim 1 , wherein the shaft assembly further comprises:

an articulation joint;

a proximal shaft component coupled to the handle assembly; and

a distal shaft component coupled to the proximal shaft component and configured to articulate about the articulation joint.

8. The system of claim 7 , wherein the rotary driver further comprises a proximal rotary shaft component coupled to the handle assembly and a distal rotary shaft component coupled to the proximal rotary shaft component and configured to articulate about the articulation joint as the distal shaft component articulates.

9. The system of claim 8 , wherein the distal rotary shaft component comprises the first clutch engagement mechanism and the second clutch engagement mechanism.

10. The system of claim 9 , wherein:

the proximal shaft component comprises a third clutch positioned within the exterior shaft and configured to drive a third function of the surgical instrument when engaged; and

the proximal rotary shaft component comprises a third clutch engagement mechanism configured to engage the third clutch independent of the first and second clutch engagement mechanisms engaging the first clutch and the second clutch, respectively.

11. The system of claim 10 , wherein the third function comprises an articulation of the distal shaft component about the articulation joint.

12. The system of claim 1 , wherein the surgical instrument further comprises a locking mechanism.

13. A surgical instrument comprising:

a handle assembly;

a generator assembly;