Adapter, extension, and connector assemblies for surgical devices

• US 10,226,254 B2
• Filed: 10/06/2015
• Issued: 03/12/2019
• Est. Priority Date: 10/21/2014
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Cabrera, Ramiro, Nelson, Anne
• Primary Examiner(s): Severson, Ryan J
• Assistant Examiner(s): Knauss, Christian
• Application Number:
  US14/875,766
• Publication Number:
  US 20160106406A1
• Time in Patent Office: 1,253 Days
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 2017/00367 Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence

Abstract

An assembly including an adapter assembly and an extension assembly for connecting an end effector to an electrosurgical instrument is provided. The adapter assembly includes first and second pusher assemblies configured for converting rotational motion into linear motion and a drive member for transferring rotational motion. The extension assembly includes at least one flexible band assembly for transferring the linear motion from the adapter assembly and a trocar assembly configured for converting rotational motion into linear motion. Also provided is a connection assembly for connecting a first tubular member to a second tubular member.

Claims

1. An assembly for operably connecting an end effector to an electrosurgical instrument, the assembly comprising:

an adapter assembly including,

a connector assembly;

a drive transfer assembly operably received through the connector assembly and including first, second, and third rotatable shafts;

a first pusher assembly operably connected to the first rotatable shaft for converting rotational motion from the first rotatable shaft to longitudinal movement to perform a first function;

a second pusher assembly operably connected to the second rotatable shaft for converting rotational motion from the second rotatable shaft to longitudinal movement to perform a second function; and

a drive member operably connected to the third rotatable shaft for transferring rotational motion from the third rotatable shaft to perform a third function; and

an extension assembly operably connected to a distal end of the adapter assembly, the extension assembly including at least one flexible band assembly operably connected to one of the first and second pusher assemblies.

2. The assembly of claim 1, wherein the first pusher assembly includes a first planetary gear assembly and the second pusher assembly includes a second planetary gear assembly.

3. The assembly of claim 2, wherein each of the first and second planetary gear assemblies includes a first planetary gear system and a second planetary gear system.

4. The assembly of claim 3, wherein each of the first and second planetary gear systems are configured to reduce a speed of rotation of the first and second rotatable shafts.

5. The assembly of claim 3, wherein the first pusher assembly includes a first drive screw operably connected to the first planetary gear assembly and the second pusher assembly includes a second drive screw operably connected to the second planetary gear assembly.

6. The assembly of claim 5, wherein the first pusher assembly includes a first pusher member operably received about the first drive screw and the second pusher assembly includes a second pusher member operably received about the second screw member.

7. The assembly of claim 6, wherein rotation of the first drive screw causes longitudinal movement of the first pusher member and rotation of the second drive screw causes longitudinal movement of the second pusher member.

8. The assembly of claim 1, wherein the adapter assembly further includes a base and a support structure rotatable relative to the base along a longitudinal axis, the connector assembly and the drive transfer assembly being disposed with in the base and the first and second pusher assemblies being disposed within the support structure.

9. The assembly of claim 1, wherein the connection assembly is configured for operable connection to the electrosurgical instrument.

10. The assembly of claim 1, wherein the extension assembly includes a second flexible band assembly operably connected to the other of the first and second pusher assemblies.

11. The assembly of claim 1, wherein the extension assembly includes a trocar assembly operably connected to the drive member.

12. The assembly of claim 11, wherein the trocar assembly converts rotational motion from the drive member into linear motion.

13. The assembly of claim 11, wherein a link assembly operably connects the trocar assembly to the drive member.

14. The assembly of claim 13, wherein the link assembly includes a first drive shaft pivotally connected to a second drive shaft and a coupling member pivotally connected to the second drive shaft.

15. The assembly of claim 1, wherein the drive transfer assembly and the first and second pusher assemblies are operably received within a single outer tube.