SURGICAL INSTRUMENT

• US 20120330287A1
• Filed: 03/15/2010
• Published: 12/27/2012
• Est. Priority Date: 03/15/2010
• Status: Abandoned Application

• Current Assignee: Aden Ltd.
• Original Assignee: Aden Ltd.
• Inventors: Yim, Jin Whan
• Application Number:
  US13/581,520
• Publication Number:
  US 20120330287A1
• Time in Patent Office: Days
• US Class Current: 606/1
• CPC Class Codes: A61B 2034/305 Details of wrist mechanisms at distal ends of robotic arms
• CPC Class Codes: A61B 34/70 Manipulators specially adapted for use in surgery
• CPC Class Codes: A61B 34/71 Manipulators operated by drive cable mechanisms

Abstract

Provided is a surgical instrument, including: a shaft; a wrist member including a guide member, a wrist body connected to the guide member and formed with a plurality of installation holes, and a plurality of protruding members each disposed to face the wrist body and having an insertion groove, and connected to the shaft; a plurality of effectors each connected to the wrist member by a pin; a support driving unit having first through fourth rotation members inserted into pins that are mounted on the wrist member, respectively, and each first and second wires connected to the plurality of effectors and the first through fourth rotation members, respectively; a main driving unit connected to the support driving unit by wire and having at least one driving unit. The main driving unit enables the entire wrist member to perform a yaw motion by rotating the entire wrist member, and enables the plurality of effectors to perform a pitch motion by simultaneously rotating the plurality of effectors into a single direction, and enables the plurality of effectors to perform a forceps motion of rotating into a direction increasing or decreasing a distance between the plurality of effectors.

Claims

1. A surgical instrument, comprising:

a shaft;

a wrist member comprising a guide member, a wrist body connected to the guide member and formed with a plurality of installation holes, and a plurality of protruding members each disposed to face the wrist body and having an insertion groove, and connected to the shaft;

a plurality of effectors each comprising a capstan, a protruding member integrally formed with the capstan and formed with an insertion hole, a fixing member inserted into the insertion hole of the protruding member, and an end effector formed on the capstan to perform a pitch motion by rotation of the capstan, and connected to the wrist member by a pin;

a support driving unit having first through fourth rotation members inserted into pins that are mounted on the wrist member, respectively, and each comprising a pair of idler pulleys, and first and second wires connected to the plurality of effectors and the first through fourth rotation members, respectively;

a main driving unit connected to the support driving unit by wire and having at least one driving unit,

wherein the main driving unit enables the entire wrist member to perform a yaw motion by rotating the entire wrist member, and enables the plurality of effectors to perform a pitch motion by simultaneously rotating the plurality of effectors into a single direction, and enables the plurality of effectors to perform a forceps motion of rotating into a direction increasing or decreasing a distance between the plurality of effectors.

2. The surgical instrument of claim 1, wherein the shaft comprises:

a hollow member;

a support member mounted on the hollow member and formed with a plurality of guide holes; and

a plurality of protruding members disposed to face the support member and each formed with an insertion hole in which a pin is to be inserted,

wherein an inclined surface is formed between the support member and each of the plurality of protruding members.

3. The surgical instrument of claim 1, wherein the wrist body of the wrist member further comprises a plurality of insertion holes that is connected to the plurality of installation holes and in which a pin is to be inserted, and each of the plurality of insertion holes is formed to be inclined.

4. The surgical instrument of claim 1, wherein a diameter of the first and second rotation members of the support driving unit is formed to be less than a diameter of the third and fourth rotation members.

5. The surgical instrument of claim 1, wherein a radius of the first and second rotation members of the support driving unit is formed to be 0.3 to 0.9 folds of a radius of the third and fourth rotation members.

6. The surgical instrument of claim 1, wherein, between the first and second wires of the support driving unit, the first wire is connected to one capstan among the plurality of effectors and one idler pulley among the first through fourth rotation members to be crossed in an “

S”

shape or an inverse “

S”

shape, and the second wire is connected to another capstan among the plurality of effectors and another idler pulley to be crossed in the “

S”

shape or the inverse “

S”

shape.

7. The surgical instrument of claim 1, wherein each of the first and second wires of the support driving unit is fixed to the capstan by the fixing member of an effector in the case of being connected to each capstan, and is inserted and thereby mounted to be guided and thereby moved by a plurality of guide holes formed in a support member of the shaft.

8. The surgical instrument of claim 1, wherein the main driving unit comprises:

a first main driving unit spaced apart from the shaft to enable the wrist member to perform the yaw motion based on a pin;

a second main driving unit mounted on front or rear of the first main driving unit and connected to a wire through the first main driving unit to enable one of the plurality of effectors to perform the pitch motion based on the pin; and

a third main driving unit disposed to face the second main driving unit and connected to the wire through the first main driving unit to enable another one of the plurality of effectors to perform the pitch motion based on the pin.

9. The surgical instrument of claim 8, wherein the first main driving unit comprises:

a pair of first rotation guide members connected to the first wire;

a pair of second rotation guide members connected to the second wire; and

a seesaw motion member mounted on both sides of each of the pair of first rotation guide members and the pair of second rotation guide members to perform a seesaw motion by rotation of a first rotation shaft, and enabling the wrist member to perform the yaw motion based on a first pin by adjusting a position of the first wire and the second wire.

10. The surgical instrument of claim 8, wherein the first main driving unit comprises:

a pair of first rotation guide members connected to the first wire;

a pair of second rotation guide members connected to the second wire;

a pair of first support rotation guide members mounted on front of the pair of first rotation guide members and connected to the first wire;

a pair of second support rotation guide members mounted on rear of the pair of first rotation guide members and connected to the first wire;

a pair of third support rotation guide members mounted on front of the pair of second rotation guide members and connected to the second wire;

a pair of fourth support rotation guide members mounted on rear of the pair of pair of second rotation guide members and connected to the second wire; and

a linear motion member mounted with the pair of first rotation guide members and the pair of second rotation guide members on both sides of the linear motion member, respectively, to perform a linear motion, and enabling the wrist member to perform the yaw motion based on a first pin by adjusting a position of the first wire and the second wire.

11. The surgical instrument of claim 10, wherein the idler pulley is applied to each of the pair of first and second rotation guide members and the pair of first through fourth support rotation guide members of the first main driving unit.

12. The surgical instrument of claim 8, wherein each of the first and second main driving units comprises:

a second rotation shaft mounted on front or rear of a first wire driving source; and

a pulley connected to the second rotation shaft and rotating by rotation of the second rotation shaft to adjust a position of the first wire or the second wire, and

the pulley is mounted so that the pair of first rotation guide members and the pair of second rotation guide members cross each other.

13. The surgical instrument of claim 12, wherein when the second rotation shaft provided to each of the first and second main driving units rotates in the same direction, each of the first and second main driving units enables the plurality of effectors to perform the pitch motion by simultaneously rotating the plurality of effectors into a single direction, and when the second rotation shaft rotates into a different direction, each of the first and second main driving units enables the plurality of effectors to perform the forceps motion of rotating into a direction increasing or decreasing a distance between the plurality of effectors.

14. A surgical instrument, comprising:

a shaft;

a wrist member comprising a guide member, a wrist body connected to the guide member and formed with a plurality of installation holes, and a plurality of protruding members each disposed to face the wrist body and having an insertion groove, and connected to the shaft;

a plurality of effectors each connected to the wrist member by a pin;

a support driving unit having first through fourth rotation members inserted into pins that are mounted on the wrist member, respectively, and first and second wires sequentially connected to the plurality of effectors and the first through fourth rotation members, respectively; and

a main driving unit comprising a first main driving unit connected to the first and second wires to enable the plurality of effectors to perform a pitch motion by simultaneously rotating the plurality of effectors into a single direction, a second main driving unit mounted on front or rear of the first main driving unit and connected to the first wire through the first main driving unit, and a third main driving unit disposed to face the second main driving unit and connected to the second wire through the first main driving unit, and the main driving unit connected to the support driving unit using a wire and mounted to be twisted at a predetermined angle with respect to the plurality of effectors,

wherein the second main driving unit and the third main driving unit of the main driving unit rotate into the same direction to thereby enable the entire wrist member to perform a yaw motion by rotating the entire wrist member, or rotate into different directions to thereby enable the plurality of effectors to perform a forceps motion of rotating into a direction increasing or decreasing a distance between the plurality of effectors.

15. The surgical instrument of claim 14, wherein a radius of the first and second rotation members of the support driving unit is formed to be 0.3 to 0.9 folds of a radius of the third and fourth rotation members.

16. The surgical instrument of claim 14, wherein the first and second wires of the support driving unit is formed as a single closed loop wire by the main driving unit twisted and thereby mounted with respect to the effectors.

17. The surgical instrument of claim 14, wherein the main driving unit is twisted by 90 degrees with respect to the plurality of effectors and thereby is mounted.

18. The surgical instrument of claim 14, wherein the first main driving unit comprises:

a pair of first rotation guide members connected to the first wire;

a pair of second rotation guide members connected to the second wire; and

a seesaw motion member mounted on both sides of each of the pair of first rotation guide members and the pair of second rotation guide members to perform a seesaw motion by rotation of a first rotation shaft, and enabling the plurality of effectors to perform the pitch motion by adjusting a loop position of the first wire and the second wire to thereby simultaneously rotate the plurality of effectors into a single direction.

19. The surgical instrument of claim 14, wherein the first main driving unit comprises:

a pair of first rotation guide members connected to the first wire;

a pair of second rotation guide members connected to the second wire;

a pair of first support rotation guide members mounted on front of the pair of first rotation guide members and connected to the first wire;

a pair of second support rotation guide members mounted on rear of the pair of first rotation guide members and connected to the first wire;

a pair of third support rotation guide members mounted on front of the pair of second rotation guide members and connected to the second wire;

a pair of fourth support rotation guide members mounted on rear of the pair of pair of second rotation guide members and connected to the second wire; and

a linear motion member mounted with the pair of first rotation guide members and the pair of second rotation guide members on both sides of the linear motion member, respectively, to perform a linear motion, and enabling the plurality of effectors to perform the pitch motion by adjusting a loop position of the first wire and the second wire to thereby simultaneously rotate the plurality of effectors into a single direction.

20. The surgical instrument of claim 14, wherein each of the second and third main driving units comprises:

a second rotation shaft mounted on front or rear of a first wire driving source; and

a pulley connected to the second rotation shaft and rotating by rotation of the second rotation shaft to adjust a position of the first wire or the second wire, and

the pulley is mounted so that the pair of first rotation guide members and the pair of second rotation guide members cross each other.

21. The surgical instrument of claim 14, wherein each of the second and third main driving units is provided with a pulley, and is configured to enable the entire wrist member to perform the yaw motion by rotating the entire wrist member when the pulleys rotate into the same direction, and to enable the plurality of effectors to perform the forceps motion of rotating into a direction increasing or decreasing a distance between the plurality of effectors when the pulleys rotate into different directions.

22. A surgical instrument, comprising:

a plurality of effectors;

a wrist member comprising a guide member, a wrist body connected to the guide member and formed with a plurality of installation holes, and a plurality of protruding members each disposed to face the wrist body and having an insertion groove, and connected to the effector;

a shaft comprising a hollow member, a support member connected to the hollow member, and a protruding member formed on each of both sides of the support member, and connected to the wrist member;

a support driving unit comprising a pair of rotation members and at least one wire; and

a main driving unit having a plurality of driving units for operating the at least one wire of the support driving unit,

wherein the main driving unit comprises a first main driving unit connected to the first and second wires to enable the plurality of effectors to perform a pitch motion by simultaneously rotating the plurality of effectors into a single direction, a second main driving unit mounted on front or rear of the first main driving unit and connected to the first wire through the first main driving unit, and a third main driving unit disposed to face the second main driving unit and connected to the second wire through the first main driving unit, and the main driving unit is connected to the support driving unit using a wire and mounted to be twisted at a predetermined angle with respect to the plurality of effectors,

the main driving unit comprises a pair of first and second rotation guide members connected to the first and second wires, respectively, a pair of first through fourth support rotation guide members mounted on front and rear of the first and second rotation guide members, respectively, and a linear motion member mounted on each of both sides of each of the first and second rotation guide members to perform a linear motion, and enabling the plurality of effectors to perform the pitch motion by adjusting a loop position of the first and second wires and thereby simultaneously rotating the plurality of effectors into a single direction,

each of the second and third main driving units comprises a second rotation shaft mounted on front or rear of the first main driving unit and a pulley connected to the second rotation shaft and rotating by rotation of the second rotation shaft to adjust a position of the first wire or the second wire, and

a diameter of the first and second rotation members of the driving unit is formed to be less than a diameter of the third and fourth rotation members in order to decrease a diameter of a capstan.

23. A surgical instrument, comprising:

a plurality of effectors each comprising a capstan, a protruding member integrally formed with the capstan and formed with an insertion hole, and a fixing member inserted into the insertion hole of the protruding member;

a wrist member comprising a guide member, a wrist body connected to the guide member and formed with a plurality of installation holes, and a plurality of protruding members each disposed to face the wrist body and having an insertion groove, and connected to the effector;

a shaft comprising a hollow member, a support member connected to the hollow member, and a protruding member formed on each of both sides of the support member, and connected to the wrist member;

a support driving unit comprising a pair of plural rotation members and at least one wire; and

a main driving unit having a plurality of driving units for operating the at least one wire of the support driving unit,

wherein the main driving unit comprises a first main driving unit connected to the first and second wires to enable the plurality of effectors to perform a pitch motion by simultaneously rotating the plurality of effectors into a single direction, a second main driving unit mounted on front or rear of the first main driving unit and connected to the first wire through the first main driving unit, and a third main driving unit disposed to face the second main driving unit and connected to the second wire through the first main driving unit, and the main driving unit is connected to the support driving unit,

the main driving unit comprises a pair of first rotation guide members connected to the first wire, a pair of second rotation guide members connected to the second wire, and a seesaw motion member mounted on both sides of each of the pair of first rotation guide members and the pair of second rotation guide members to perform a seesaw motion by rotation of a first rotation shaft, and enabling the plurality of effectors to perform the pitch motion by adjusting a loop position of the first wire and the second wire to thereby simultaneously rotate the plurality of effectors into a single direction,

and the main driving unit is twisted by 90 degrees with respect to either the plurality of effectors or the wrist member and thereby is mounted.