Operation assembly of electric endoscope anastomat

Abstract

A push block and a reset spring are arranged on a handle of an operation assembly of the electric endoscope cutting anastomat, and a driving groove is formed in the lower bottom face of a driving sliding block of a driving piece. And the push block on the handle is inserted into the driving groove of the driving slide block. The reset spring drives the handle to rotate in the opening direction between the handle and the anastomat body, and the driving piece drives the nail bin assembly and the nail anvil assembly to execute the opening action. The handle overcomes the acting force of the reset spring to rotate in the closing direction with the anastomat body, and then the driving piece drives the nail bin assembly and the nail anvil assembly to execute the closing action. The driving switch controls the motor assembly to drive the driving groove of the driving sliding block to move forwards, so that the push block of the handle is separated from the driving groove of the driving sliding block and then is pressed on the lower bottom face of the driving sliding block under the acting force of the reset spring, and the handle does not rotate any more. The motor assembly drives the driving groove of the driving sliding block to move backwards to the push block of the handle, and the push block of the handle is inserted into the driving groove of the driving sliding block again under the acting force of the reset spring.

Description

Technical Field

[0001] The present invention relates to an operating assembly of an electric laparoscopic stapler used in laparoscopic surgery. Background Art

[0002] In laparoscopic surgery, various laparoscopic staplers are usually used in surgeries to form organ and tissue channels in the abdominal and thoracic cavities and to close organ and tissue incisions; they are used in surgeries on organs and tissues in the excretory and reproductive systems; they are particularly suitable for anastomosis surgeries on organs and tissues that are difficult to expose and operate, which can reduce surgical trauma, shorten operation time, and improve surgical quality.

[0003] The electric laparoscopic stapler adopts continuous firing operation during the cutting and anastomosis process to prevent the U-shaped stapler from rebounding after bending, and can be bent into a suitable and consistent B-shaped stapler. The incision of the tissue at the cutting site is also smooth, which can ensure the requirements of the operation. As described in US Patent US20190290266A1: The electric laparoscopic stapler includes an actuator, an extension assembly and an operating assembly. The extension assembly connects the operating assembly and the actuator. The actuator includes a stapler body, an electric control circuit, an electronic control circuit, a handle and a drive member. The electric control circuit includes a power supply, a motor assembly and a normally open drive switch. The handle can rotate on the stapler body. The drive member can move back and forth in the stapler body to control the action of the stapler assembly and the anvil assembly. In this electric laparoscopic stapler, the handle and the release button are used to control the opening and closing actions of the actuator respectively, and the electric control circuit and the electronic control circuit are used to control the firing action. When the handle and the release button are used to control the opening and closing actions of the actuator respectively, the safety switch locks the drive switch. When the stapling operation is completed by closing the drive switch, the reverse indicator light is on. At this time, the user releases the drive switch, and the end switch is closed, so that the drive motor automatically rotates in the reverse direction, driving the drive member to return. The first unsatisfactory aspect of this electric laparoscopic stapler is that when the cutting and stapling operation is completed, the motor needs to rotate in the reverse direction to drive the drive member to return; at this time, the user needs to pay attention to whether the reverse indicator light is on, which affects the attention to the surgical site; the motor rotates from forward to stop and then reverse during the load period, and the motor will shake, affecting the feel and consuming a lot of electricity. The second unsatisfactory aspect of this electric laparoscopic stapler is that when the handle and the release button are used to control the opening and closing actions of the actuator respectively, the safety switch is required to lock the drive switch, and the added electrical components not only take up space, but also increase product costs and increase operation steps. The third unsatisfactory aspect of this electric laparoscopic stapler is that in order to realize the automatic cutting and stapling operation, the electric control circuit, the electronic control circuit (including various sensors) and the operating assembly use more components, which makes the space occupied larger, the weight larger, and the product cost higher. The fourth unsatisfactory aspect of this electric laparoscopic stapler is that the motor is installed in the handle, which makes the shape of the handle unsuitable for long-term holding and exertion, and the user is prone to fatigue. Summary of the invention

[0004] The electric laparoscopic stapler of the present invention comprises an actuator assembly, an extension assembly and an operating assembly. The extension assembly connects the operating assembly and the actuator assembly. The extension assembly may include a joint assembly. The actuator assembly includes a stapler body, an electric control circuit, a handle and a drive member. The electric control circuit includes a power supply, a motor assembly and a normally open drive switch. The power supply may be an internal battery or an external power supply. The handle can rotate on the stapler body. The drive member can move back and forth in the stapler body to control the movement of the stapler assembly and the anvil assembly.

[0005] The handle is provided with a push block and a return spring. The driving member is provided with a driving slider. The driving slider of the driving member can move forward and backward in the stapler body. The lower bottom surface of the driving slider is provided with a driving groove. The push block on the handle is inserted into the driving groove of the driving slider. The return spring drives the handle to rotate in the direction of opening with the stapler body, and the push block of the handle pushes the driving member to move backward, and the driving member drives the stapler assembly and the nail anvil assembly to perform the opening action. The handle overcomes the action of the return spring and rotates in the direction of closing with the stapler body, and the push block of the handle pushes the driving member to move forward; at this time, the driving member drives the stapler assembly and the nail anvil assembly to perform the closing action. The driving switch controls the motor assembly to drive the driving groove of the driving slider to move forward and drive the push block of the handle to overcome the action of the return spring, so that the handle continues to rotate in the direction of closing with the stapler body; until the push block of the handle is separated from the driving groove of the driving slider and is pressed on the lower bottom surface of the driving slider under the action of the return spring, so that the handle no longer rotates. The motor assembly drives the driving slot of the driving slider to move backward to the push block of the handle, and the force of the reset spring causes the push block of the handle to be reinserted into the driving slot of the driving slider.

[0006] The operating assembly includes a release button, a release spring, a blocking slider and a blocking spring. The force of the blocking spring causes the blocking slider to move in the direction of the driving slider. The release button overcomes the force of the release spring and pushes the blocking slider to move in the direction of leaving the driving slider. A blocking groove is provided on the lower bottom surface of the driving slider. The force of the blocking spring causes the blocking slider to be inserted into the blocking groove of the driving slider, and the blocking slider blocks the driving member from moving backward in the stapler body, but the contact between the inclined surface of the blocking slider and the inclined surface of the blocking groove cannot block the driving member from moving forward in the stapler body. The handle drives the driving member to move forward, so that the blocking groove of the driving slider moves to the blocking slider, and the force of the blocking spring causes the blocking slider to be inserted into the blocking groove of the driving slider, blocking the driving member from moving backward in the stapler body; at this time, pressing the release button drives the blocking slider to move in the direction of leaving the driving slider, so that the push block of the handle pushes the driving member to move backward under the action of the reset spring.

[0007] In this way, the handle can only control the driving member to drive the staple magazine assembly and the anvil assembly to perform the opening action and the closing action; during the period when the motor assembly controls the driving member to drive the staple magazine assembly and the anvil assembly to perform the tissue anastomosis action, the handle automatically withdraws from controlling the driving member; after the motor assembly controls the driving member to drive the staple magazine assembly and the anvil assembly to complete the tissue anastomosis, the handle automatically resumes controlling the driving member.

[0008] There is a top block on the drive switch. The top block of the drive switch presses against the handle, so that the drive switch cannot rotate on the stapler body and remains in a normally open state. When the handle rotates in the direction of closing with the stapler body to drive the stapler assembly and the anvil assembly to perform the closing action, the handle is separated from the top block of the drive switch, so that the drive switch can be in a closed state after rotating on the stapler body. In this way, when the handle and the release button are used to control the opening and closing actions of the actuator assembly respectively, there is no need for a safety switch to lock the drive switch, so that the technical effect of preventing the drive switch from controlling the motor assembly to drive the stapler assembly and the anvil assembly to perform the action of staple tissue before the stapler assembly and the anvil assembly complete the closing action can be achieved.

[0009] The stapler body has a position indicator mark and a pointer groove. The driving slider has a position pointer. The position pointer moves forward and backward in the pointer groove to indicate the forward and backward position of the driving member. The power supply has a battery box. The battery box has a battery box plug. The stapler body has a battery socket. When the battery box plug of the battery box is plugged into the battery socket of the stapler body, the battery in the battery box provides power to the motor assembly.

[0010] The operating assembly of the electric laparoscopic stapler of the present invention includes a cylindrical cam. The cylindrical cam includes a spiral groove and a linear groove. The spiral groove includes a first spiral groove and a second spiral groove. The spiral direction of the first spiral groove is opposite to that of the second spiral groove. The front end of the first spiral groove and the front end of the second spiral groove are connected and interpenetrated with each other. The front end of the linear groove located at the rear of the cylindrical cam and the rear ends of the first spiral groove and the second spiral groove are connected and interpenetrated with each other. The cylindrical cam can be formed by plastic or metal injection molding, or by metal cutting, stamping, extrusion or spinning, or by splicing. The motor assembly drives the cylindrical cam to rotate in the stapler body. After the drive switch is closed, the motor assembly is controlled to drive the cylindrical cam to rotate in the forward direction in the stapler body. The driving member includes a driving protrusion. The driving protrusion can rotate in the driving slider. The handle drives the driving protrusion of the driving member inserted into the linear groove of the cylindrical cam to move from the front end of the linear groove to the rear end of the linear groove, so that the driving member drives the nail magazine assembly and the nail anvil assembly to perform the opening action. The handle drives the driving protrusion of the driving member inserted into the linear groove of the cylindrical cam to move from the rear end of the linear groove to the front end of the linear groove, so that the driving protrusion of the driving member enters the front end of the linear groove and the rear end of the first spiral groove and the rear end of the second spiral groove of the cylindrical cam are connected and interpenetrated with each other, driving the nail magazine assembly and the nail anvil assembly to complete the closing action; at the same time, the driving protrusion of the driving member is blocked at the front end of the linear groove of the cylindrical cam and the rear end of the first spiral groove and the rear end of the second spiral groove are connected and interpenetrated with each other, so that the spiral groove of the cylindrical cam blocks the push block of the handle from pushing the driving protrusion of the driving member to move forward in the anastomosis device body. Afterwards, the drive switch controls the motor assembly to drive the cylindrical cam to rotate forward in the stapler body: first, the first spiral groove of the cylindrical cam drives the driving protrusion of the driving member to move forward in the stapler body, so that the cylindrical cam drives the driving member to move forward in the stapler body, and the driving member drives the staple magazine assembly and the staple anvil assembly to perform the action of stapling tissues until the driving protrusion of the driving member enters the front end of the first spiral groove and connects with the front end of the second spiral groove and penetrates each other to complete the action of stapling tissues; then, the second spiral groove of the cylindrical cam drives the driving protrusion of the driving member to move backward in the stapler body back to the front end of the linear groove of the cylindrical cam and the rear end of the first spiral groove and the rear end of the second spiral groove are connected with each other and penetrate each other.

[0011] The driving protrusion of the driving member is flat. A toggle spring sheet is installed in the body of the anastomosis device at a position corresponding to the position where the front end of the linear groove of the cylindrical cam and the rear end of the first spiral groove and the rear end of the second spiral groove are connected and interpenetrated with each other. The handle drives the driving protrusion of the driving member inserted into the linear groove of the cylindrical cam to move from the rear end of the linear groove to the front end of the linear groove, so that the driving protrusion of the driving member enters the position where the front end of the linear groove and the rear end of the first spiral groove of the cylindrical cam and the rear end of the second spiral groove are connected and interpenetrated with each other, driving the nail magazine assembly and the nail anvil assembly to complete the closing action; at the same time, the toggle spring sheet toggle the driving protrusion in the driving slider to swing, so that the long end of the driving protrusion is inserted into the first spiral groove of the cylindrical cam.

[0012] There is a stop contact in the electric control circuit. The stop contact is in a normally closed state. There is a stop dial block on the driving member. When the motor assembly drives the spiral groove of the cylindrical cam to drive the driving protrusion of the driving member that enters the spiral groove to move backward and return to the front end of the linear groove of the cylindrical cam and the rear end of the first spiral groove and the rear end of the second spiral groove to connect and penetrate each other, the stop dial block of the driving member opens the stop contact, and the stop contact disconnects the electric control circuit, so that the motor assembly stops rotating. There is an emergency switch in the electric control circuit. When the emergency switch is closed, the motor assembly drives the cylindrical cam to rotate in the opposite direction in the anastomosis device body.

[0013] The motor assembly is fixedly installed in the cylindrical cam. The motor assembly drives the cylindrical cam to rotate in the stapler body. The drive shaft of the motor assembly is inserted into the stapler body, so that the stapler body prevents the drive shaft of the motor assembly from rotating in the stapler body. There are a collector ring and a collector contact in the electric control circuit. The collector ring is installed on the cylindrical cam. The lead of the motor assembly is connected to the collector ring, and the collector contact in the stapler body keeps in contact with the collector ring. When the drive switch is closed, the motor assembly rotates forward together with the cylindrical cam in the stapler body: first, the first spiral groove of the spiral groove of the cylindrical cam drives the driving protrusion of the driving member entering the first spiral groove to move forward in the stapler body, so that the cylindrical cam drives the driving member to move forward in the stapler body, and the driving member then drives the staple magazine assembly and the staple anvil assembly to perform the action of staple tissue; then, the second spiral groove of the spiral groove of the cylindrical cam drives the driving protrusion of the driving member entering the second spiral groove to move backward in the stapler body, so that the cylindrical cam drives the driving protrusion of the driving member to return to the front end of the linear groove of the cylindrical cam and the rear end of the first spiral groove and the rear end of the second spiral groove are connected and connected with each other.

[0014] When selecting a suitable cutting and stapling position, the handle is used to loosen and clamp the tissue, which is convenient for repeatedly performing the clamping, clamping and loosening operations, achieving the technical effect of not consuming the electric energy of the battery in the electric control circuit, and achieving the technical effect of facilitating the user to judge whether the nail magazine assembly and the nail anvil assembly are at a suitable tissue clamping thickness. The motor assembly driving the cylindrical cam does not need to rotate from forward to stop and then rotate in reverse during the load period, so the user does not need to judge whether the electric laparoscopic stapler has completed the action of stapling the tissue, nor does it need to judge whether to return, achieving the technical effect of reducing the time and energy spent by the user in judging and executing different operating procedures when operating the electric laparoscopic stapler, and can also achieve the technical effect of reducing the jitter of the motor assembly, improving the feel and reducing the energy consumption of the battery in the electric control circuit. Since the cylindrical cam has a force amplification effect, it can also achieve the technical effect of reducing the energy consumption of the battery in the electric control circuit. Before the nail magazine assembly and the nail anvil assembly complete the closing action, the linear groove of the cylindrical cam can achieve the technical effect that even if the drive switch is triggered by mistake, the motor assembly cannot be controlled to rotate. As the motor assembly drives the cylindrical cam to rotate forward in the stapler body, the driving member drives the staple magazine assembly and the staple anvil assembly to automatically complete the action of cutting the stapled tissue and returning. Only simple mechanical and electrical component control is required, and there is no need for an end point switch to control the motor assembly from forward rotation to stop and then reverse rotation. There is no need to use electronic components, software and displays for control. Therefore, the technical effects of reducing the energy consumption of the battery in the electric control circuit, reducing product costs and facilitating the use of low-cost and efficient radiation sterilization can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a zoomed-out right view of the electric laparoscopic stapler showing when the actuator is turned on; Figure 2 Yes means Figure 1 An appearance diagram of an operating component of an electric laparoscopic stapler; Figure 3 Yes means Figure 2 The appearance diagram of the operating assembly after some parts are removed; Figure 4 Yes means Figure 2 A bottom view of the driving protrusion in the linear groove; Figure 5 is a zoomed-out right side view of the electric laparoscopic stapler showing a closed actuator assembly; Figure 6 Yes means Figure 5 A right side view of the operating assembly after some parts are removed; Figure 7 Yes means Figure 5 A bottom view of the driving protrusion in the figure when it moves forward to the point where the spiral groove and the linear groove intersect; Figure 8 Yes means Figure 5 A bottom view of the driving protrusion in the figure when it moves back to the point where the spiral groove and the linear groove intersect; Fig. 9 is a zoomed-out right view of the electric laparoscopic stapler showing the execution assembly performing tissue stapling; Fig.10 Yes means Fig. 9 The appearance diagram of the operating components; Fig.11 Yes means Fig.10 A right side view of the operating assembly after some parts are removed; Fig.12 Yes means Fig.10 A bottom view of the driving protrusion in the spiral groove; Fig.13 It is a diagram showing the appearance of a cylindrical cam; Fig.14 Yes means Figure 2 The right side view of the motor assembly and some related parts; Fig.15 Yes means Figure 2 A front view of the battery box in FIG. Fig.16 Yes means Fig.15 The appearance of the battery box after removing some parts; Fig.17 Yes means Figure 2 Appearance diagram of the driving parts in FIG. Fig.18 Yes means Figure 2 Appearance diagram of the handle, driving slider, driving protrusion, release button, release spring, blocking slider and blocking spring; Fig.19 Yes means Fig.18 The appearance of the handle in ; Fig. 20 Yes means Fig.18 Appearance diagram of the release button, release spring, blocking slider and blocking spring in FIG. Fig.21 Yes means Fig.18 Appearance diagram of the driving slider and the driving protrusion in FIG. Fig. 22 Yes means Fig.21 The appearance diagram in another direction; Fig.23 It is a diagram showing the electric control circuit in the electric laparoscopic stapler. DETAILED DESCRIPTION

[0016] The following is a description of the best embodiment of the operating assembly of the electric laparoscopic stapler of the present invention by way of example and in conjunction with the accompanying drawings. In the accompanying drawings and the following description, the term "rear" refers to a position close to the operator of the electric laparoscopic stapler, and the term "front" refers to a position away from the operator of the electric laparoscopic stapler; the term "upper" refers to the upper part of the operator of the electric laparoscopic stapler, and the term "lower" refers to the lower part of the operator of the electric laparoscopic stapler; the terms of other positions and directions can be understood based on the accompanying drawings and the following description. In order to highlight the graphics and description of the operating assembly of the electric laparoscopic stapler, some components are not described in detail in the accompanying drawings. The structure, installation, use and operation process of the components of various electric laparoscopic staplers can refer to the patents cited in this specification and other related documents.

[0017] like Figures 1 to 11 and Fig.23 As shown, the electric laparoscopic stapler 1 of the present invention comprises an actuator 2, an extension assembly 3 and an operating assembly 4. The extension assembly 3 connects the operating assembly 4 and the actuator 2. The actuator 2 includes a stapler assembly 5 and a staple anvil assembly 6. The operating assembly 4 includes a stapler body 7, an electric control circuit 8, a handle 9 and a driving member 10. The electric control circuit 8 includes a motor assembly 11, a battery 12 and a normally open driving switch 13. The handle 9 can rotate on the stapler body 7. The driving member 10 can move back and forth in the stapler body 7 to control the action of the stapler assembly 5 and the staple anvil assembly 6.

[0018] like Figures 2 to 13 and Fig.17 As shown, the operating assembly 4 includes a cylindrical cam 14. The cylindrical cam 14 includes a spiral groove 15 and a linear groove 16. The spiral groove 15 includes a first spiral groove 17 and a second spiral groove 18. The spiral direction of the first spiral groove 17 is opposite to that of the second spiral groove 18. The front end of the first spiral groove 17 and the front end of the second spiral groove 18 are connected and interpenetrated with each other. The front end of the linear groove 16 located at the rear of the cylindrical cam 14 is connected and interpenetrated with the rear end of the first spiral groove 17 and the rear end of the second spiral groove 18. A toggle spring sheet 19 is installed at a position corresponding to the position where the front end of the linear groove 16 of the cylindrical cam 14 and the rear end of the first spiral groove 17 and the rear end of the second spiral groove 18 are connected and interpenetrated with each other in the anastomosis body 7. The motor assembly 11 drives the cylindrical cam 14 to rotate in the anastomosis body 7. After the drive switch 13 is closed, the motor assembly 11 is controlled to drive the cylindrical cam 14 to rotate in the forward direction in the anastomosis body 7. The driving member 10 includes a driving slider 20 and a driving projection 21. The driving slider 20 of the driving member 10 can move forward and backward in the stapler body 7. The driving projection 21 of the driving member 10 is flat. The driving projection 21 can rotate in the driving slider 20.

[0019] like Figures 1 to 13As shown, the handle 9 drives the driving protrusion 21 of the driving member 10 inserted into the linear groove 16 of the cylindrical cam 14 to move from the front end of the linear groove 16 to the rear end of the linear groove 16, so that the driving member 10 drives the nail magazine assembly 5 and the nail anvil assembly 6 to perform the opening action. The handle 9 drives the driving protrusion 21 of the driving member 10 inserted into the linear groove 16 of the cylindrical cam 14 to move from the rear end of the linear groove 16 to the front end of the linear groove 16, so that the driving protrusion 21 of the driving member 10 enters the front end of the linear groove 16 and the rear end of the first spiral groove 17 and the rear end of the second spiral groove 18 of the cylindrical cam 14 are connected and interpenetrated, driving the nail magazine assembly 5 and the nail anvil assembly 6 to complete the closing action; at this time, the spring sheet 19 is moved to move the driving protrusion 21 in the driving slider 20 to swing, so that the long end of the driving protrusion 21 is inserted into the first spiral groove 17 of the cylindrical cam 14. Thereafter, the drive switch 13 controls the motor assembly 11 to drive the cylindrical cam 14 to rotate forward in the stapler body 7: first, the first spiral groove 17 of the cylindrical cam 14 drives the driving protrusion 21 of the driving member 10 to move forward in the stapler body 7, so that the cylindrical cam 14 drives the driving member 10 to move forward in the stapler body 7, and the driving member 10 drives the staple magazine assembly 5 and the staple anvil assembly 6 to perform the tissue stapling action until the driving protrusion 21 of the driving member 10 enters the front end of the first spiral groove 17 and the front end of the second spiral groove 18 are connected and interpenetrated to complete the tissue stapling action; then, the second spiral groove 18 of the cylindrical cam 14 drives the driving protrusion 21 of the driving member 10 to move backward in the stapler body 7 back to the front end of the linear groove 16 of the cylindrical cam 14 and the rear end of the first spiral groove 17 and the rear end of the second spiral groove 18 are connected and interpenetrated.

[0020] like Figures 5 to 8 , Fig.15 , Fig.16 and Fig.23As shown, the electric control circuit 8 has a stop contact 22. The stop contact 22 is in a normally closed state. The drive member 10 has a stop dial block 23. When the motor assembly 11 drives the spiral groove 15 of the cylindrical cam 14 to drive the drive protrusion 21 of the drive member 10 that enters the spiral groove 15 to move backward and return to the position where the front end of the linear groove 16 of the cylindrical cam 14 and the rear ends of the first spiral groove 17 and the second spiral groove 18 are connected and interpenetrated with each other, the stop dial block 23 of the drive member 10 opens the stop contact 22, and the stop contact 22 disconnects the electric control circuit 8, so that the motor assembly 11 stops rotating. The electric control circuit 8 has an emergency switch 24. When the emergency switch 24 is closed, the motor assembly 11 drives the cylindrical cam 14 to rotate in the opposite direction in the stapler body 7. The battery 12 is installed in the battery box 25. The battery box 25 has a battery box plug 42. The stapler body 7 has a battery socket 26. When the battery box plug 42 of the battery box 25 is inserted into the battery socket 26 of the stapler body 7 , the battery 12 in the battery box 25 provides electrical energy to the motor assembly 11 .

[0021] like Figure 7 , Figure 8 , Fig.12 , Fig.14 and Fig.23 As shown, the motor assembly 11 is fixedly installed in the cylindrical cam 14. The motor assembly 11 drives the cylindrical cam 14 to rotate in the stapler body 7. The drive shaft 27 of the motor assembly 11 is inserted into the stapler body 7, so that the stapler body 7 prevents the drive shaft 27 of the motor assembly 11 from rotating in the stapler body 7. The electric control circuit 8 includes a collector ring 28 and a collector contact 29. The collector ring 28 is installed on the cylindrical cam 14. The lead of the motor assembly 11 is connected to the collector ring 28, and the collector contact 29 in the stapler body 7 keeps in contact with the collector ring 28. When the drive switch 13 is closed, the motor assembly 11 rotates forward together with the cylindrical cam 14 in the stapler body 7: first, the first spiral groove 17 of the spiral groove 15 of the cylindrical cam 14 drives the driving protrusion 21 of the driving member 10 entering the first spiral groove 17 to move forward in the stapler body 7, so that the cylindrical cam 14 drives the driving member 10 to move forward in the stapler body 7, and the driving member 10 then drives the staple magazine assembly 5 and the staple anvil assembly 6 to perform the action of staple tissue; then, the second spiral groove 18 of the spiral groove 15 of the cylindrical cam 14 drives the driving protrusion 21 of the driving member 10 entering the second spiral groove 18 to move backward in the stapler body 7, so that the cylindrical cam 14 drives the driving protrusion 21 of the driving member 10 to return to the position where the front end of the linear groove 16 of the cylindrical cam 14 and the rear end of the first spiral groove 17 and the rear end of the second spiral groove 18 are connected and interpenetrated with each other.

[0022] like Figure 2 , Figure 5 , Fig.10 , Fig.18 , Fig.19 and Fig. 22 As shown, the handle 9 is provided with a push block 30 and a return spring 31. A drive groove 32 is provided on the lower bottom surface of the drive slider 20. The push block 30 on the handle 9 is inserted into the drive groove 32 of the drive slider 20. The return spring 31 drives the handle 9 to rotate in the direction of opening with the stapler body 7, and the push block 30 of the handle 9 pushes the drive member 10 to move backward, and the drive member 10 drives the stapler assembly 5 and the nail anvil assembly 6 to perform the opening action. The handle 9 overcomes the action of the return spring 31 and rotates in the direction of closing with the stapler body 7, and the push block 30 of the handle 9 pushes the drive member 10 to move forward, so that the drive protrusion 21 moves forward in the linear groove 16 of the cylindrical cam 14; at this time, the drive member 10 drives the stapler assembly 5 and the nail anvil assembly 6 to perform the closing action. The drive switch 13 controls the motor assembly 11 to drive the drive groove 32 of the drive slider 20 to move forward, driving the push block 30 of the handle 9 to overcome the action of the return spring 31, so that the handle 9 continues to rotate in the direction of closing with the stapler body 7. Until the push block 30 of the handle 9 is separated from the driving groove 32 of the driving slider 20, it is pressed on the lower bottom surface of the driving slider 20 under the force of the return spring 31, so that the handle 9 does not rotate any more. The motor assembly 11 drives the driving groove 32 of the driving slider 20 to move backward to the push block 30 of the handle 9, and the force of the return spring 31 causes the push block 30 of the handle 9 to be reinserted into the driving groove 32 of the driving slider 20.

[0023] like Figure 2 , Figure 3 , Figure 5 , Figure 6 , Fig.18 , Fig. 20 and Fig. 22As shown, the operating assembly 4 includes a release button 33, a release spring 34, a blocking slider 35 and a blocking spring 36. The force of the blocking spring 36 causes the blocking slider 35 to move in the direction of approaching the driving slider 20. The release button 33 overcomes the force of the release spring 34 to push the blocking slider 35 to move in the direction of leaving the driving slider 20. A blocking groove 37 is provided on the lower bottom surface of the driving slider 20. The force of the blocking spring 36 causes the blocking slider 35 to be inserted into the blocking groove 37 of the driving slider 20, and the blocking slider 35 blocks the driving member 10 from moving backward in the stapler body 7, but the contact between the inclined surface of the blocking slider 35 and the blocking groove 37 cannot prevent the driving member 10 from moving forward in the stapler body 7. The handle 9 drives the driving member 10 to move forward, so that the blocking groove 37 of the driving slider 20 moves to the blocking slider 35, and the force of the blocking spring 36 causes the blocking slider 35 to be inserted into the blocking groove 37 of the driving slider 20, blocking the driving member 10 from moving backward in the stapler body 7; at the same time, the driving protrusion 21 of the driving member 10 is blocked in the spiral groove 15 where the front end of the linear groove 16 of the cylindrical cam 14 and the rear end of the first spiral groove 17 and the rear end of the second spiral groove 18 are connected and interpenetrated with each other, so that the spiral groove 15 of the cylindrical cam 14 blocks the push block 30 of the handle 9 from pushing the driving protrusion 21 of the driving member 10 to move forward in the stapler body 7; at this time, pressing the release button 33 drives the blocking slider 35 to move in the direction of separating from the driving slider 20, so that the push block 30 of the handle 9 pushes the driving member 10 to move backward under the action of the reset spring 31.

[0024] like Figure 2 , Figure 3 , Figure 5 , Figure 6 , Fig.10 , Fig.11 and Fig.23 As shown, there is a top block 38 on the drive switch 13. The top block 38 of the drive switch 13 presses on the handle 9, so that the drive switch 13 cannot rotate on the stapler body 7 and remains in a normally open state. When the handle 9 rotates in the direction of closing with the stapler body 7 to drive the stapler assembly 5 and the staple anvil assembly 6 to perform a closing action, the handle 9 is separated from the top block 38 of the drive switch 13, so that the drive switch 13 can be in a closed state after rotating on the stapler body 7.

[0025] like Figure 1 , Figure 5 , Fig. 9 , Fig.17 and Fig.21 As shown, the stapler body 7 is provided with a position indication mark 39 and a pointer groove 40. The driving slide block 20 is provided with a position pointer 41. The position pointer 41 moves forward and backward in the pointer groove 40 to indicate the front and rear position of the driving member 10.

Claims

1. An operating assembly of an electric laparoscopic stapler, the electric laparoscopic stapler comprising an actuator assembly, an extension assembly and an operating assembly; the extension assembly connects the operating assembly and the actuator assembly; the actuator assembly comprises a stapler body, an electric control circuit, a handle and a driving member; the electric control circuit comprises a power supply, a motor assembly and a normally open driving switch; the handle can rotate on the stapler body; the driving member can move back and forth in the stapler body to control the movement of the stapler body and the anvil assembly; Features: The handle is provided with a push block and a return spring; the drive member is provided with a drive slider; the drive slider of the drive member can move forward and backward in the stapler body; a drive groove is provided on the lower bottom surface of the drive slider; the push block on the handle is inserted into the drive groove of the drive slider; the return spring drives the handle to rotate in the direction of opening with the stapler body, then the push block of the handle pushes the drive member to move backward, and the drive member drives the staple cartridge assembly and the staple anvil assembly to perform the opening action; the handle overcomes the action of the return spring and rotates in the direction of closing with the stapler body, then the push block of the handle pushes the drive member forward The drive switch controls the motor assembly to drive the driving slot of the driving slider to move forward, driving the push block of the handle to overcome the force of the reset spring, so that the handle continues to rotate in the direction of closing with the stapler body; until the push block of the handle is separated from the driving slot of the driving slider and is pressed on the lower bottom surface of the driving slider under the force of the reset spring, so that the handle no longer rotates; the motor assembly drives the driving slot of the driving slider to move backward to the push block of the handle, and the force of the reset spring causes the push block of the handle to be reinserted into the driving slot of the driving slider.

2. The operating assembly of the electric laparoscopic stapler according to claim 1, characterized in that: The operating assembly includes a release button, a release spring, a blocking slider and a blocking spring; the force of the blocking spring causes the blocking slider to move in the direction toward the driving slider; the release button overcomes the force of the release spring to push the blocking slider to move in the direction of leaving the driving slider; a blocking groove is provided on the lower bottom surface of the driving slider; the force of the blocking spring causes the blocking slider to be inserted into the blocking groove of the driving slider, then the blocking slider blocks the driving member from moving backward in the stapler body, but the contact between the inclined surface of the blocking slider and the inclined surface of the blocking groove cannot block the driving member from moving forward in the stapler body; the handle drives the driving member to move forward, so that the blocking groove of the driving slider moves to the blocking slider, then the force of the blocking spring causes the blocking slider to be inserted into the blocking groove of the driving slider, blocking the driving member from moving backward in the stapler body; at this time, pressing the release button drives the blocking slider to move in the direction of leaving the driving slider, so that the push block of the handle pushes the driving member to move backward under the action of the reset spring.

3. The operating assembly of the electric laparoscopic stapler according to claim 1, characterized in that: The driving switch is provided with a top block; the top block of the driving switch is pressed against the handle, so that the driving switch cannot rotate on the stapler body and remains in a normally open state; when the handle rotates in the direction of closing with the stapler body to drive the stapler magazine assembly and the staple anvil assembly to perform a closing action, the handle is separated from the top block of the driving switch, so that the driving switch can be in a closed state after rotating on the stapler body.

4. The operating assembly of the electric laparoscopic stapler according to claim 1, characterized in that: The stapler body is provided with a position indication mark and a pointer groove; the driving slider is provided with a position pointer; the position pointer moves forward and backward in the pointer groove to indicate the front and rear position of the driving member.

5. The operating assembly of the electric laparoscopic stapler according to claim 1, characterized in that: The power source includes a battery box; the battery box has a battery box plug; the stapler body has a battery socket; when the battery box plug of the battery box is plugged into the battery socket of the stapler body, the battery in the battery box provides electrical energy to the motor assembly.

6. The operating assembly of the electric laparoscopic stapler according to claim 1, characterized in that: The operating assembly includes a cylindrical cam; the cylindrical cam includes a spiral groove and a linear groove; the spiral groove includes a first spiral groove and a second spiral groove; the spiral direction of the first spiral groove is opposite to the spiral direction of the second spiral groove; the front end of the first spiral groove and the front end of the second spiral groove are connected with each other and penetrate each other; the front end of the linear groove located at the rear of the cylindrical cam is connected with the rear end of the first spiral groove and the rear end of the second spiral groove and penetrates each other; the motor assembly drives the cylindrical cam to rotate in the anastomosis device body; the drive switch is closed to control the motor assembly The cylindrical cam is driven to rotate forwardly in the stapler body; the driving member is provided with a driving protrusion; the driving protrusion can rotate in the driving slider; the handle drives the driving protrusion of the driving member inserted into the linear groove of the cylindrical cam to move from the front end of the linear groove to the rear end of the linear groove, so that the driving member drives the nail magazine assembly and the nail anvil assembly to perform the opening action; the handle drives the driving protrusion of the driving member inserted into the linear groove of the cylindrical cam to move from the rear end of the linear groove to the front end of the linear groove, so that the driving protrusion of the driving member enters the front end of the linear groove and the first spiral groove of the cylindrical cam. The rear end of the groove and the rear end of the second spiral groove are connected and interpenetrated with each other, driving the nail magazine assembly and the nail anvil assembly to complete the closing action. At the same time, the driving protrusion of the driving member is blocked at the front end of the linear groove of the cylindrical cam and the rear end of the first spiral groove and the rear end of the second spiral groove are connected and interpenetrated with each other, so that the spiral groove of the cylindrical cam blocks the push block of the handle to push the driving protrusion of the driving member to move forward in the stapler body; thereafter, the driving switch controls the motor assembly to drive the cylindrical cam to rotate forward in the stapler body: first, the first spiral groove of the cylindrical cam drives the driving member The driving protrusion of the driving member moves forward in the stapler body, so that the cylindrical cam drives the driving member to move forward in the stapler body, and the driving member drives the staple magazine assembly and the staple anvil assembly to perform the action of stapler tissue, until the driving protrusion of the driving member enters the front end of the first spiral groove and connects with the front end of the second spiral groove and penetrates each other to complete the action of stapler tissue, and then, the second spiral groove of the cylindrical cam drives the driving protrusion of the driving member to move backward in the stapler body and return to the front end of the linear groove of the cylindrical cam and the rear end of the first spiral groove and the rear end of the second spiral groove are connected with each other and penetrate each other.

7. The operating assembly of the electric laparoscopic stapler according to claim 6, characterized in that: The driving protrusion of the driving member is flat; a toggle spring sheet is installed in the anastomosis device body at a position corresponding to the position where the front end of the linear groove of the cylindrical cam is connected with and interpenetrated with the rear end of the first spiral groove and the rear end of the second spiral groove; the handle drives the driving protrusion of the driving member inserted into the linear groove of the cylindrical cam to move from the rear end of the linear groove to the front end of the linear groove, so that the driving protrusion of the driving member enters the position where the front end of the linear groove is connected with and interpenetrated with the rear end of the first spiral groove and the rear end of the second spiral groove of the cylindrical cam, driving the nail magazine assembly and the nail anvil assembly to complete the closing action; at the same time, the toggle spring sheet toggle the driving protrusion in the driving slider to swing, so that the long end of the driving protrusion is inserted into the first spiral groove of the cylindrical cam.

8. The operating assembly of the electric laparoscopic stapler according to claim 6, characterized in that: There is a stall contact in the electric control circuit; the stall contact is in a normally closed state; there is a stall shift block on the driving member; when the motor assembly drives the spiral groove of the cylindrical cam to drive the driving protrusion of the driving member entering the spiral groove to move backward and return to the front end of the linear groove of the cylindrical cam and the rear ends of the first spiral groove and the second spiral groove to be connected and interconnected with each other, the stall shift block of the driving member opens the stall contact, and the stall contact disconnects the electric control circuit, so that the motor assembly stops rotating.

9. The operating assembly of the electric laparoscopic stapler according to claim 6, characterized in that: The electric control circuit is provided with an emergency switch; when the emergency switch is closed, the motor assembly drives the cylindrical cam to rotate in the opposite direction in the stapler body.

10. The operating assembly of the electric laparoscopic stapler according to claim 6, characterized in that: The motor assembly is fixedly installed in the cylindrical cam; the motor assembly drives the cylindrical cam to rotate in the stapler body; the driving shaft of the motor assembly is inserted into the stapler body, so that the stapler body prevents the driving shaft of the motor assembly from rotating in the stapler body; there are collector rings and collector contacts in the electric control circuit; the collector rings are installed on the cylindrical cam; the leads of the motor assembly are connected to the collector rings, and the collector contacts in the stapler body keep in contact with the collector rings; when the driving switch is closed, the motor assembly and the cylindrical cam rotate forward in the stapler body: first, the first spiral groove of the cylindrical cam rotates in the first direction. The spiral groove drives the driving protrusion of the driving member entering the first spiral groove to move forward in the stapler body, so that the cylindrical cam drives the driving member to move forward in the stapler body, and the driving member then drives the staple magazine assembly and the staple anvil assembly to perform the action of staple tissue, and then, the second spiral groove of the spiral groove of the cylindrical cam drives the driving protrusion of the driving member entering the second spiral groove to move backward in the stapler body, so that the cylindrical cam drives the driving protrusion of the driving member to return to the front end of the linear groove of the cylindrical cam and the rear end of the first spiral groove and the rear end of the second spiral groove are connected and connected with each other.

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