Driving Device, Surgical Instrument, and Operation Method of Surgical Instrument

Abstract

A driving device, a surgical instrument, and an operation method of the surgical instrument. The driving device is driven by a power assembly. The driving device includes a first driving assembly and a first motion conversion assembly. The first motion conversion assembly includes a first effective stroke structure and a first idle stroke structure. The driving device has a first state and a second state. In the first state, the power assembly drives the first effective stroke structure by the first driving assembly; and in the second state, the power assembly is coupled with the first idle stroke structure by the first driving assembly.

What is claimed is: 
     
         1 . A driving device, driven by a power assembly, the driving device comprising a first driving assembly and a first motion conversion assembly, wherein the first motion conversion assembly comprises a first effective stroke structure and a first idle stroke structure, the driving device has a first state and a second state, in the first state, the power assembly drives the first effective stroke structure by the first driving assembly; and in the second state, the power assembly is coupled with the first idle stroke structure by the first driving assembly. 
     
     
         2 . The driving device as claimed in  claim 1 , wherein the first motion conversion assembly comprises a first transmission member and a first output member engaged with the first transmission member, and in the first state, the first transmission member drives the first output member to move; and in the second state, the first output member is not driven. 
     
     
         3 . The driving device as claimed in  claim 2 , wherein the first driving assembly comprises a first gear, the first transmission member comprises a straight groove and an arc groove, the straight groove forms the first effective stroke structure, the arc groove forms the first idle stroke structure, the straight groove and the arc groove are disposed on the first gear. 
     
     
         4 . The driving device as claimed in  claim 3 , wherein the arc groove communicates with the straight groove to form a non-closed groove or a closed annular groove. 
     
     
         5 . The driving device as claimed in  claim 3 , wherein the first output member is a protruding column, the protruding column is disposed in the straight groove and the arc groove slidably, a radial distance between the first groove and a rotation center of the first gear increases or decreases along the straight groove, and the protruding column slides in the straight groove to convert rotation of the first gear into linear movement of the protruding column. 
     
     
         6 . The driving device as claimed in  claim 2 , wherein the first output member is a direct output member of the first motion conversion assembly, or an indirect output member of the first motion conversion assembly. 
     
     
         7 . The driving device as claimed in  claim 6 , wherein the direct output member is a protruding column, the indirect output member is a sleeve. 
     
     
         8 . An end actuator driving device, comprising the driving device as claimed in  claim 1 , wherein the driving device is configured to drive an end actuator to be opened or closed. 
     
     
         9 . A surgical instrument driving device, comprising the end actuator driving device as claimed in  claim 8 ; wherein the surgical instrument driving device comprises a cutting knife assembly driving device, which drives a cutting knife assembly to move forwards or backwards. 
     
     
         10 . The surgical instrument driving device as claimed in  claim 9 , wherein the cutting knife assembly driving device is driven by a power assembly; wherein the cutting knife assembly driving device comprises a second effective stroke structure and a second idle stroke structure, and the power assembly drives one of the first effective stroke structure and the second effective stroke structure. 
     
     
         11 . The surgical instrument driving device as claimed in  claim 9 , wherein the cutting knife assembly driving device comprises a second driving assembly and a second motion conversion assembly engaged with the second driving assembly, the second motion conversion assembly comprises a second transmission member and a second output member, the second transmission member comprises a second effective stroke structure and a second idle stroke structure, the cutting knife assembly driving device has a third state and a fourth state, and in the third state, the second effective stroke structure is engaged with the second output member; and in the fourth state, the second idle stroke structure is coupled with the second output member. 
     
     
         12 . The surgical instrument driving device as claimed in  claim 11 , wherein the second driving assembly comprises a second driving member, the second driving member and the second transmission member move synchronously, and in the third state and the fourth state, the second transmission member is always engaged with the power assembly through the second driving member. 
     
     
         13 . The surgical instrument driving device as claimed in  claim 11 , wherein the second effective stroke structure is a toothed portion disposed on the second transmission member, the second idle stroke structure is a non-toothed portion disposed on the second transmission member, and the second output member is a rack. 
     
     
         14 . A surgical instrument, comprising a transmission mechanism, an end actuator driven by the transmission mechanism, and a cutting knife assembly, wherein the transmission mechanism comprises the surgical instrument driving device as claimed in  claim 9 .