Flexible shaft extender and method of using same

• US 8,888,762 B2
• Filed: 05/02/2013
• Issued: 11/18/2014
• Est. Priority Date: 07/30/2004
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Whitman, Michael P.
• Primary Examiner(s): Dvorak, Linda
• Assistant Examiner(s): SMITH, KAITLYN ELIZABETH
• Application Number:
  US13/875,640
• Publication Number:
  US 20130240596A1
• Time in Patent Office: 565 Days
• Field of Search: 606/1, 227/178.1, 227/180.1
• US Class Current: 606/1
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/1626 Control means; Display units
• CPC Class Codes: A61B 17/1631 Special drive shafts, e.g. flexible shafts A61B17/1642, A61B17/164 take precedence
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 2017/003 Steerable
• CPC Class Codes: A61B 2017/00482 with a code
• CPC Class Codes: A61B 2017/320032 Details of the rotating or oscillating shaft, e.g. using a flexible shaft
• CPC Class Codes: A61B 2090/0803 Counting the number of times an instrument is used
• CPC Class Codes: F16C 1/10 Means for transmitting linear movement in a flexible sheathing, e.g. "Bowden-mechanisms" guiding-sheathings F16C1/26
• CPC Class Codes: Y10T 74/2042 and hand operator

Abstract

An extender for use in an electro-mechanical surgical system that includes a surgical attachment that may be detachably coupled to an electro-mechanical driver device via a flexible shaft. The extender is a substantially rigid extender that includes a proximal end that may be detachably coupled to a distal end of the flexible shaft. The extender also includes a distal end that may be detachably coupled to the surgical attachment. The extender also includes at least one rotatable drive shaft configured to engage and be secured with a respective rotatable drive shaft of the flexible shaft such that rotation of the respective rotatable drive shaft of the flexible shaft by the electro-mechanical driver device causes the at least one rotatable drive shaft of the extender to rotate, thereby rotating a complementary connector of the surgical attachment so as to operate the surgical attachment. The extender may include a memory unit and a data cable that transfers data from the memory unit to an electro-mechanical driver device. Additionally or alternatively, the extender may include a data cable that transfers data from a memory unit in the surgical attachment to the electro-mechanical driver device. Advantageously, the extender is autoclavable.

Claims

1. An electro-mechanical surgical system, comprising:

an electro-mechanical driver device including a flexible shaft including a pair of rotatable drive members extending along a length thereof; and

an extender having;

a proximal end including a handle having a handle cap assembly configured to detachably couple to a distal end of the flexible shaft, the handle cap assembly including;

a handle cap including at least two orifices;

a key plate; and

a quick connect collar mounted to a proximal end of the handle cap and retained thereagainst by the key plate; and

a distal end configured to be detachably coupled to a proximal end of a surgical attachment,

wherein each orifice of the at least two orifices is configured to engage and rotatably secure to a corresponding one of the pair of rotatable drive members of the electro-mechanical driver device such that rotation of the pair of rotatable drive members causes at least two rotatable shafts of the extender to rotate thereby transmitting a force to the surgical attachment so as to operate the surgical attachment.

2. The electro-mechanical surgical system of claim 1, wherein the handle cap has at least one aperture at the proximal end thereof.

3. The electro-mechanical surgical system of claim 2, wherein a distal end of the key plate seats within the at least one aperture at the proximal end of the handle cap.

4. The electro-mechanical surgical system of claim 1, wherein the quick connect collar is configured to facilitate coupling and uncoupling the extender to the distal end of the flexible shaft.

5. The electro-mechanical surgical system of claim 1, wherein the key plate includes a corresponding pair of orifices that align with the at least two orifices of the handle cap.

6. The electro-mechanical surgical system of claim 1, further comprising a pair of drive sockets, each drive socket of the pair of drive sockets being rotatably retained within a corresponding one of the at least two orifices of the handle cap.

7. The electro-mechanical surgical system of claim 6, wherein each drive socket of the pair of drive sockets have mounted thereon:

a bearing spacer,

a sealing element and

a bearing, wherein the bearing spacer, the sealing element, and the bearing are configured to rotatably retain each drive socket of the pair of drive sockets in the corresponding one of the at least two orifices of the handle cap.

8. The electro-mechanical surgical system of claim 7, wherein the sealing element of each drive socket of the pair of drive sockets and seal elements provided at the distal end of the extender prevent moisture from entering the extender to allow sterilization of the extender via an autoclave.

9. The electro-mechanical surgical system of claim 1, wherein the key plate includes at least one aperture defined therethrough that is configured to provide access for a wiring harness retained within the handle cap assembly.

10. The electro-mechanical surgical system of claim 9, wherein a proximal end of the wiring harness is accessible through the at least one aperture defined through the key plate and includes a connector for connection to a data transfer cable of the flexible shaft.

11. The electro-mechanical surgical system of claim 10, wherein a distal end of the wiring harness extends out of the distal end of the extender for communicating data from the surgical attachment to the data transfer cable of the flexible shaft.

12. The electro-mechanical surgical system of claim 1, wherein the surgical attachment is a surgical stapler-cutter.

13. The electro-mechanical surgical system of claim 1, wherein the extender is flexible.

14. An electro-mechanical surgical system, comprising:

an electro-mechanical driver device including a pair of rotatable drive members projecting from a distal end thereof;

an extender having;

a proximal end including a handle having a handle cap assembly configured to detachably couple to the distal end of the electro-mechanical driver device, the handle cap assembly including;

at least two orifices, each orifice of the at least two orifices configured to engage and rotatably secure to a corresponding one of the pair of rotatable drive members of the electro-mechanical driver device; and

a pair of drive sockets, wherein each drive socket of the pair of drive sockets is rotatably retained within a corresponding one of the at least two orifices of the handle cap assembly, each drive socket of the pair of drive sockets having mounted thereon;

a bearing spacer;

a sealing element; and

a bearing, wherein the bearing spacer, the sealing element, and the bearing are configured to rotatably retain each drive socket of the pair of drive sockets in the corresponding one of the at least two orifices; and

a distal end configured to be detachably coupled to a proximal end of a surgical attachment, wherein a rotation of either of the pair of rotatable drive members causes a corresponding one of a pair of rotatable shafts of the extender to rotate thereby transmitting a force to the surgical attachment so as to operate the surgical attachment.

15. The electro-mechanical surgical system of claim 14, wherein the pair of shafts of the extender are rotatable shafts.

16. The electro-mechanical surgical system of claim 14, wherein the sealing element of each drive socket of the pair of drive sockets and seal elements provided at the distal end of the extender prevent moisture from entering the extender to allow sterilization of the extender via an autoclave.

17. The electro-mechanical surgical system of claim 14, wherein the surgical attachment is a surgical stapler-cutter.