Multi-function surgical instruments

Patent metadata

Field	Value
Publication number	US-9579117-B2
Application number	US-201414276465-A
Country	US
Kind code	B2
Filing date	May 13, 2014
Priority date	Sep 25, 2013
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

A surgical instrument including housing having a shaft extending distally therefrom, an outer sleeve disposed about the shaft and selectively translatable relative to the shaft, a first drive shaft disposed within the shaft and translatable relative to the shaft independently of the outer sleeve, a second drive shaft disposed within the first drive shaft and coupled to the outer sleeve to translate in conjunction with the outer sleeve, and a rotatable nose wheel. The rotatable nose wheel is mounted about a distal end of the housing and is rotatably coupled to each of the outer sleeve, the shaft, the first drive shaft, and the second drive shaft such that rotation of the rotatable nose wheel effects corresponding rotation of the outer sleeve, the shaft, the first drive shaft, and the second drive shaft in conjunction with one another and relative to the housing.

First claim

What is claimed is:

1. A surgical instrument, comprising:
a housing having a shaft extending distally therefrom;
an outer sleeve disposed externally about the shaft and selectively translatable relative to the shaft;
a first drive shaft disposed within the shaft and translatable relative to the shaft independently of the outer sleeve;
a second drive shaft disposed within the first drive shaft and coupled to the outer sleeve to translate in conjunction with the outer sleeve; and
a rotatable nose wheel mounted about a distal end of the housing, the rotatable nose wheel disposed about the outer sleeve and rotatably coupled to each of the outer sleeve, the shaft, the first drive shaft, and the second drive shaft such that rotation of the rotatable nose wheel effects corresponding rotation of the outer sleeve, the shaft, the first drive shaft, and the second drive shaft in conjunction with one another and relative to the housing.

2. The surgical instrument according to claim 1 , wherein the rotatable nose wheel includes a transverse bar extending through an interior thereof and wherein each of the outer sleeve, the first drive shaft, and the second drive shaft define longitudinal slots configured to slidably receive the transverse bar to rotatably fix the outer sleeve, the first drive shaft, and the second drive shaft relative to one another and relative to the rotatable nose wheel.

3. The surgical instrument according to claim 2 , wherein the shaft defines an aperture configured to receive the transverse bar to longitudinally and rotatably fix the shaft relative to the rotatable nose wheel.

4. The surgical instrument according to claim 2 , further comprising a first bushing disposed about the outer sleeve, the first bushing including a pin extending through a longitudinal slot defined within the shaft, the longitudinal slot of the first drive shaft, and engaged within an aperture defined within the second drive shaft to longitudinally fix the outer sleeve and the second drive shaft to one another such that the outer sleeve and the second drive shaft translate in conjunction with one another independently of the shaft and the first drive shaft.

5. The surgical instrument according to claim 4 , further comprising an actuator assembly for longitudinally translating the outer sleeve and the second drive shaft between a retracted position and a deployed position, the actuator assembly including a linkage rotatably fixed relative to the housing and operably engaged to the first bushing for translating the outer sleeve and the second drive shaft relative to the housing regardless of the rotational orientation of the first bushing relative to the linkage.

6. The surgical instrument according to claim 1 , further comprising a second bushing coupled to each of the outer sleeve, the shaft, the first drive shaft, and the second drive shaft in fixed rotational orientation relative thereto, the second bushing including a pair of flanges rotatably fixed and slidably received within corresponding tracks defined within the rotatable nose wheel such that rotation of the rotatable nose wheel effects corresponding rotation of the outer sleeve, the shaft, the first drive shaft, and the second drive shaft.

7. The surgical instrument according to claim 6 , wherein the second bushing includes a pin extending therethrough for coupling the second bushing to each of the outer sleeve, the shaft, the first drive shaft, and the second drive shaft.

8. The surgical instrument according to claim 7 , wherein the pin of the second bushing extends through an aperture defined within the outer sleeve, a longitudinal slot defined within the shaft, a longitudinal slot defined within the first drive shaft, and an aperture defined within the second drive shaft to longitudinally fix the second bushing, the outer sleeve, and the second drive shaft to one another such that the second bushing, the outer sleeve, and the second drive shaft translate in conjunction with one another independently of the shaft and the first drive shaft.

9. The surgical instrument according to claim 8 , further comprising an actuator assembly for longitudinally translating the outer sleeve and the second drive shaft between a retracted position and a deployed position, the actuator assembly including a linkage rotatably fixed relative to the housing and operably engaged to the second bushing for translating the outer sleeve and the second drive shaft regardless of the rotational orientation of the second bushing relative to the linkage.

10. The surgical instrument according to claim 1 , further comprising an end effector assembly mounted at a distal end of the shaft, the rotatable nose wheel rotatable relative to the housing to rotate the end effector assembly relative to the housing.

11. The surgical instrument according to claim 1 , wherein the first drive shaft is coupled to the end effector assembly at a distal end of the first drive shaft, the first drive shaft translatable relative to the end effector assembly to manipulate the end effector assembly between a first condition and a second condition.

12. The surgical instrument according to claim 1 , further comprising a third drive shaft disposed within the second drive shaft, the third drive shaft translatable relative to the shaft independently of the outer sleeve and the first drive shaft, wherein the rotatable nose wheel is rotatably coupled to the third drive shaft such that rotation of the rotatable nose wheel effects corresponding rotation of the outer sleeve, the shaft, the first drive shaft, the second drive shaft, and the third drive shaft in conjunction with one another and relative to the housing.

13. A surgical instrument, comprising:
a housing having a shaft extending distally therefrom, the shaft defining a longitudinal slot and an aperture distally of the longitudinal slot;
an outer sleeve slidably disposed externally about the shaft, the outer sleeve defining a longitudinal slot and an aperture proximally of the longitudinal slot;
a first drive shaft slidably disposed within the shaft, the first drive shaft defining a longitudinal slot;
a second drive shaft disposed within the first drive shaft, the second drive shaft defining a longitudinal slot and an aperture proximally of the longitudinal slot;
a bushing disposed about the outer sleeve, the bushing including a pin extending through the aperture of the outer sleeve, the longitudinal slot of the shaft, the longitudinal slot of the first drive shaft, and the aperture of the second drive shaft to longitudinally fix the outer sleeve and the second drive shaft to one another and permit translation of the outer sleeve and the second drive shaft relative to the shaft and the first drive shaft; and
a rotatable nose wheel mounted about a distal end of the housing and disposed about the outer sleeve, the rotatable nose wheel including a transverse bar extending through the aperture of the shaft and the longitudinal slots of the outer sleeve, the first drive shaft, and the second drive shaft such that rotation of the rotatable nose wheel effects corresponding rotation of the outer sleeve, the shaft, the first drive shaft, and the second drive shaft in conjunction with one another and relative to the housing.

14. The surgical instrument according to claim 13 , further comprising an actuator assembly for longitudinally translating the outer sleeve and the second drive shaft between a retracted position and a deployed position, the actuator assembly including a linkage rotatably fixed relative to the housing and operably engaged to the bushing for translating the outer sleeve and the second drive shaft re

Assignees

• Covidien Lp

Inventors

• Kappus John J
• Heard David N

Classifications

• A61B18/1442

  Probes having pivoting end effectors, e.g. forceps · CPC title

• A61B2017/2912

  transmission of forces to actuating rod or piston · CPC title

• A61B2017/2929

  with a head rotatable about the longitudinal axis of the shaft · CPC title

• A61B2017/293

  with means preventing relative rotation between the shaft and the actuating rod · CPC title

• A61B2018/1475

  Electrodes retractable in or deployable from a housing · CPC title