Disclosure of Invention
The invention aims to provide a surgical instrument, which is simple, quick and convenient by arranging a first guide piece and a second guide piece, wherein the first guide piece and the second guide piece are matched with each other so as to enable a rod body device to be quickly connected with a working head.
The surgical instrument comprises a handle, a working head detachably connected with the handle and a rod body device detachably connected with the working head, wherein the working head comprises a shell, a rotating head arranged on the shell, a driving rod arranged in the shell and a first communication component, an opening which is formed in the shell and is used for enabling the first communication component to be connected with the outside is formed in the shell, a first guide piece is formed in the rotating head, the rod body device comprises a firing sleeve, a clamping bin component arranged in the firing sleeve and a butt joint part arranged on the firing sleeve body, the butt joint part comprises a butt joint shell used for being inserted into the rotating head and a second communication component arranged at the front end of the butt joint shell and used for being spliced with the first communication component, and a second guide piece which is matched with the first guide piece to adjust the butt joint position of the second communication component and the first communication component is formed on the butt joint shell.
Further, the first guide includes at least two first bosses disposed at intervals, and the second guide includes at least a second boss engaged between the at least two first bosses.
Further, the first boss and the second boss are in an arrow-shaped structure.
Further, the second communication assembly comprises a communication housing mounted on the butt joint housing and an electrical terminal arranged in the communication housing, the communication housing is formed with a rectangular opening for exposing the electrical terminal, and the first communication assembly comprises a butt joint interface spliced with the rectangular opening.
Further, the communication shell is of a cylindrical structure, an annular protruding portion is formed on the outer cylindrical surface of the communication shell in a protruding mode, and a first groove matched with the protruding portion is formed in the abutting-joint shell.
Further, the butt joint shell is of a cylindrical structure, a second groove is formed in the butt joint shell, and a ball body clamped with the second groove is arranged on the rotary head.
Further, the second communication assembly further comprises a supporting piece connected with the electric terminal, a first through hole is formed in the supporting piece, a second through hole corresponding to the first through hole is formed in the communication shell, and the driving rod sequentially penetrates through the second through hole and the first through hole to connect the bin clamping assembly and the firing sleeve.
Further, the rod body device further comprises a rod body assembly connected with the driving rod, the rod body assembly comprises a push rod connected with the clamping bin assembly and a firing rod used for pushing the firing sleeve, the firing rod is provided with a hollow part, the push rod is arranged in the hollow part and can slide relative to the firing rod, the push rod moves forward to enable the clamping bin assembly to clamp, and the push rod moves forward continuously to prop against the firing rod to drive the firing sleeve to fire.
Further, the firing sleeve is provided with a skirt edge, and the firing bar is provided with a protruding block and a first elastic piece arranged between the protruding block and the skirt edge so as to reset the firing bar.
Further, one end of the push rod is provided with a stop block, and a second elastic piece for resetting the push rod is arranged between the stop block and the protruding block.
The invention has the beneficial effects that the rotary head and the butt joint part are arranged, the rotary head is provided with the first guide piece, the butt joint part is provided with the second guide piece, and the first guide piece and the second guide piece are mutually matched, so that the rod body assembly and the working head are quickly and conveniently in butt joint.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Referring to fig. 1 to 9, a surgical instrument according to a preferred embodiment of the present invention includes a handle 1, a working head 2 detachably connected to the handle 1, and a shaft device 3 detachably connected to the working head 2, and any one of the handle 1, the working head 2, and the shaft device 3 is directly replaceable when damaged by the detachable connection, without replacing the surgical instrument as a whole, thereby saving medical costs and reducing economic stress of a patient. The working head 2 and the handle 1, and the working head 2 and the shaft device 3 can be detachably connected through clamping, screw thread matching, plugging and the like, and in the embodiment, the working head 2 and the handle 1 are connected through clamping, and the working head 2 and the shaft device 3 are connected through plugging.
The working head 2 includes a housing 21, a driving lever 23 provided in the housing 21, a first communication unit, and a rotary head 22 mounted on the housing 21, an opening 211 for connecting the first communication unit to the outside is provided in the housing 21, the opening 211 is provided in the rotary head 22, and a first guide 222 is formed in the rotary head 22. The shaft device 3 comprises a firing sleeve 31, a cartridge clamping assembly 33 arranged in the firing sleeve 31 and a butting part 32 arranged on the firing sleeve 31, wherein the butting part 32 comprises a butting shell 321 which is inserted into the rotary head 22 and a second communication assembly 322 which is arranged at the front end of the butting shell 321 and is spliced with the first communication assembly, and a second guide 323 which is matched with the first guide 222 to adjust the butting position of the second communication assembly 321 and the first communication assembly is formed on the butting shell 321. When the shaft device 3 is inserted into the rotary head 22, the first guide 222 and the second guide 323 cooperate with each other so that the first communication assembly and the second communication assembly 322 are in butt joint, and the driving rod 23 is connected with the cartridge assembly 33 and the firing sleeve 31.
In this embodiment, the first communication assembly and the second communication assembly 322 are not easy to dock, wherein the second communication assembly 322 includes a communication housing 3221 mounted on the docking housing 321 and an electrical terminal 3222 disposed in the communication housing 3221, the communication housing 3221 is formed with a rectangular opening 3225 for exposing the electrical terminal 3222, and the first communication assembly includes a mating interface plugged into the rectangular opening 3225, and the mating interface and the rectangular opening 3225 need to be completely aligned when docking. Therefore, the design of the first guide 222 and the second guide 323 is particularly important, so as to achieve the effects of rapidness, convenience and high efficiency. Specifically, the first guide 222 includes at least two first bosses 2221 disposed at intervals, the second guide 323 includes at least a second boss 3231 engaged between the at least two first bosses 2221, and the first boss 2221 and the second boss 3231 are in an arrow-shaped structure. When the plug-in connection is ready, the arrows of the first boss 2221 and the second boss 3231 are arranged oppositely, and after the plug-in connection is finished, the arrows of the first boss 2221 and the second boss 3231 are staggered and arranged oppositely.
Indeed, in other embodiments, the shapes of the first boss 2221 and the second boss 3231 may be other, and are not specifically limited herein according to the actual situation. The number of the first bosses 2221 and the second bosses 3231 is not particularly limited in this embodiment, and is determined according to practical situations.
The communication housing 3221 is in a cylindrical structure, the outer cylindrical surface of the communication housing 3221 protrudes to form an annular protruding portion 3224, a first groove 3211 matched with the protruding portion 3224 is formed in the abutting housing 321, and the second communication assembly 321 can rotate relative to the abutting housing 321. Correspondingly, the docking housing 3221 is also in a cylindrical structure, a second groove 3212 is arranged on the docking housing 3221, and a ball 221 engaged with the second groove 3212 is arranged on the rotating head 22.
The plugging process of the shaft device 3 and the rotary head 22 is to rotate the communication housing 3221 relative to the docking housing 321 to adjust the position of the second communication assembly 322, so that the second communication assembly 322 corresponds to the position of the first communication assembly, and the second boss 3231 corresponds to the interval position between the two first bosses 2221. When the shaft device 3 is inserted into the spin head 22, the position of the shaft device 3 is finely adjusted so that the second boss 3231 is matched with the first boss 2221 until the rectangular opening 3225 is completely docked with the docking port, and at this time, the second groove 3212 is engaged with the ball 221. After the shaft device 3 and the rotary head 22 are inserted, when the rotary head 22 rotates to adjust the angle of the shaft assembly 3, the docking housing 321 rotates compared with the second communication assembly 322 due to the fact that the second communication assembly 322 is docked with the first communication assembly and is kept still, so that the angle adjustment of the shaft device 3 is completed.
The clip bin assembly 33 comprises a clip tray for placing the ligating clip 332, a push clip 331 for pushing the ligating clip 332 to move forward, and a clamp 334 connected with the clip tray, the rod body device 3 further comprises a rod body assembly 34 connected with the driving rod 23, the rod body assembly 34 comprises a push rod 341 connected with the clip bin assembly 33 and a firing rod 342 connected with the firing sleeve 31, the firing rod 342 is provided with a hollow part, the push rod 341 is arranged in the hollow part and can slide relative to the firing rod 342, the push rod 341 moves forward to enable the clip bin assembly 33 to send the clip, and the push rod 341 moves forward continuously to abut against the firing rod 342 to drive the firing sleeve 31 to fire. As described above, the support 3223 is provided with the first through hole 3227, and the support 3223 is connected to the push rod 341 through the first through hole 3227. The through hole shell 21 is also provided with a second through hole 3226 corresponding to the position of the first through hole 3227, and the driving rod 23 sequentially penetrates through the second through hole 3226 and the first through hole 3227 to be in butt joint with the push rod 341 so as to push the push clamping piece 331 to send the clamp and drive the firing sleeve 31 to fire, so that the clamp 334 is closed.
The firing sleeve 31 has a skirt, the firing bar 342 is provided with a bump 3422 and a first elastic member 35 arranged between the bump 3422 and the skirt to reset the firing bar 342, one end of the push rod 341 is provided with a stop block 3411, and a second elastic member 36 arranged between the stop block 3411 and the bump 3422 to reset the push rod 341. Wherein the stop block 3411 has a diameter greater than or equal to the diameter of the firing bar 342 to prevent the push rod 341 from sliding into the firing bar 342.
The rotary head 22, the docking housing 321, and the communication housing 3221 may be provided separately or integrally, and are not particularly limited herein according to the actual situation.
The handle 1 is an electric handle 1, and comprises a handle shell 13 with a containing cavity, a motor 14 arranged in the containing cavity, a control circuit electrically connected with the motor 14, a first switch 11 and a second switch 12 which are arranged on the handle shell 13 and are coupled to the control circuit, a transmission mechanism 25 for converting radial force of the motor 14 into axial force is further arranged on the working head 2, and a driving rod 23 is connected with the transmission mechanism 25. Wherein the first switch 11 is used for driving the driving rod 23 to move forward, and the second switch 12 is used for driving the driving shaft to move backward. Indeed, the driving component, the control circuit, the first switch 11 and the second switch 12 may also be disposed in the working portion, and are not specifically limited herein according to practical situations.
The assembled surgical instrument is implemented by the motor 14 driving the drive rod 23 forward to push the push rod 341 forward to push the ligation clip 332 to move toward the clamp 334, at which time the second elastic member 36 is gradually compressed, the push rod 341 continues to move forward to abut against the firing rod 342 and drive the firing rod 342 forward to cause the first elastic member 35 to push the firing sleeve 31 forward until the ligation clip 332 is delivered to the clamp 334 while the firing sleeve 31 closes the clamp 334 to fire, at which time the first elastic member 35 is in a compressed state. The motor 14 drives the driving rod 23 to retract, the first elastic member 35 in a compressed state drives the firing rod 342 to reset under the action of its own elastic force after the external force is withdrawn, and the second elastic member 36 drives the push rod 341 to reset under the action of its own elastic force after the external force is withdrawn.
In summary, by providing the rotating head and the abutting portion 3222, the rotating head is provided with the first guiding element 222, the abutting portion 3222 is provided with the second guiding element 323, and the first guiding element 222 and the second guiding element 323 cooperate with each other to enable the shaft assembly to be fast abutted with the working head 2, so that the device is fast, convenient and efficient.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.