A manually resettable motorized cutting and stapling device

Abstract

The application discloses a manually-resettable electric cutting and suturing device, which is internally provided with a driving gear, a sliding gear and a manual reset mechanism in a hand-held part of the electric cutting and suturing device, the manual reset mechanism comprises an operating handle and a sliding gear pushing assembly; the operating handle is rotatably installed on a rotating shaft arranged in the hand-held part, and an outwardly extending pawl is slidably arranged on the operating handle; the sliding gear pushing assembly comprises a cam, a pin shaft, a connecting rod, a limiting sliding block and a pushing spring; the limiting sliding block is slidably arranged in the hand-held part and connected with the pushing spring at a rear end, and a front end of the limiting sliding block is in space interference with a movement track of the pin shaft. Under the premise of meeting the manual back cutting, the pawl structure is adjusted and the limiting sliding block is arranged, so that the locking state of the cam can be released through the subsequent operation of the limiting sliding block, the cam drives the sliding gear to return to the initial state, the whole mechanism is reset to the initial state, and the repeated use of the product is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, in particular to an electric cutting and suturing device capable of manual reset. BACKGROUND

[0002] Laparoscopic surgery uses modern camera technology and high-tech surgical instruments and equipment to complete complex intra-thoracic / abdominal surgery under a thoracic / abdominal wall cannula or a small incision. To complete laparoscopic surgery, only 1-3 1.5 cm small holes in the thoracic / abdominal wall are needed. During surgery, the surgeon inserts the laparoscope into the cannula and cooperates with surgical equipment such as a blood vessel clamp to perform resection and anastomosis of lesions such as lung cancer.

[0003] Currently, there are two types of laparoscopic staplers: one is a manual laparoscopic stapler, which controls the firing of the staple cartridge assembly to suture the tissue by hand. During use, the user needs to manually hold the firing handle several times to make the mechanical transmission mechanism of the stapler push the staple cartridge assembly to close and form. The manual laparoscopic stapler requires a certain skill of the actual operation of the doctor, and improper operation may cause the sutured tissue to be pulled and torn.

[0004] The other is an electric laparoscopic stapler. This stapler allows the surgeon to control all movements of the laparoscopic stapler by touching the keys on the laparoscope fixed handle with his fingers. Although the electric laparoscopic stapler is simpler and more convenient to operate than the manual stapler, when the power supply of the electric stapler fails or malfunctions, the electrician needs to pull the reset button to withdraw the stapler from the thoracic / abdominal wall hole. The current mainstream electric cutting and suturing device with a reset button; the specific structure is shown in CN102176869A. The reset button hooks the rack through the lever principle. Although the electric laparoscopic stapler can be reset when the electric function fails, the user needs to forcibly reset the tablet before resetting, which is relatively troublesome. Moreover, this type of reset device is not very convenient to operate, and it is easy to shake during operation, which affects the surgery. In addition, after the traditional manual reset device, it cannot be used again, and subsequent maintenance requires complete disassembly and reassembly, which is relatively troublesome. SUMMARY

[0005] The purpose of the present application is to provide an electric cutting and suturing device capable of manual reset, which retains the manual reset function and optimizes the operation handle and sliding gear push assembly to reset the entire mechanism to the initial state, realizing the reuse of the product.

[0006] The present application is achieved by the following technical scheme: an electric cutting and suturing device capable of manual reset, the main body of which is an electric cutting and suturing device. A motor, a driving gear, a sliding gear, a reset spring, a transmission rod, a control unit, and a button are arranged in the hand-held part of the electric cutting and suturing device. Transmission teeth and reset teeth extending forward and backward are arranged on both different sides of the transmission rod.

[0007] Further comprising a manual reset mechanism, the manual reset mechanism comprises an operating handle and a sliding gear pushing assembly;

[0008] The operating handle is rotatably installed on the rotating shaft provided in the handheld part, and an outwardly extending pawl is slidingly installed on the operating handle; the pawl is designed to slide over the reset tooth when moving from the fifth position to the sixth position; when the pawl moves from the sixth position to the fifth position, the pawl cooperates with the reset tooth to drive the transmission rod back;

[0009] The sliding gear pushing assembly comprises a cam, a pin shaft, a connecting rod, a limiting slider, a pushing spring and a pressing block; the cam is located on the second side of the rotating disc and is rotatably installed on the rotating shaft, and a pin shaft is provided on the outer side of the cam; the second side of the rotating disc is provided with a limiting block, which is arranged to have spatial interference with the protruding area of the cam; the pressing block is located above the sliding gear, and the cam and the pressing block are connected through the connecting rod;

[0010] The limiting slider is slidingly installed in the handheld part in a front-rear direction and is connected to the pushing spring at the rear end, and the front end of the limiting slider has spatial interference with the movement track of the pin shaft.

[0011] Compared with the prior art, the beneficial effects of the present application are:

[0012] 1. Under the premise of meeting the manual return of the tool, the pawl structure is adjusted and the limiting slider is provided; the locking state of the cam is released by operating the limiting slider, so that the cam drives the sliding gear to return to the initial state, and finally the entire mechanism is reset to the initial state, realizing the reuse of the product. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a side view of the present application without the handheld part shell;

[0014] Figure 2 It is a structure schematic diagram of the second side direction of the rotating disc after removing the handheld part shell of the present application;

[0015] Figure 3 It is a structure schematic diagram after separating the sliding gear and the transmission rod on the basis of Figure 2 ;

[0016] Figure 4 It is a structure schematic diagram of the first side direction of the rotating disc after removing the handheld part shell of the present application;

[0017] Figure 5 It is a state diagram of the transmission rod back; Figure 4

[0018] Figure 6 It is a structure schematic diagram of the operating handle. ​

[0019] Labeling Explanation: 11 Handheld Part, 111 Rotating Shaft, 112 Mounting Slot, 12 Motor, 13 Drive Gear, 14 Sliding Gear, 15 Return Spring, 16 Transmission Rod, 161 Transmission Gear, 162 Retracting Gear, 17 Button, 18 Limit Shaft, 19 Bracket, 2 Operating Handle, 21 Turntable, 211 Guide Cavity, 212 Limit Block, 22 Handle, 23 Elastic Component, 24 Sliding Insert, 241 Pawl, 31 Cam, 32 Pin, 33 Linkage, 34 Limit Slider, 35 Push Spring, 36 Pressure Block, 37 Lever. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings:

[0021] like Figures 1-6 As shown: A manually reset electric cutting and sewing device, the main body of which is an electric cutting and sewing device, and the hand-held part 11 of the electric cutting and sewing device is provided with a motor 12, a drive gear 13, a sliding gear 14, a reset spring 15, a transmission rod 16, a control unit and a button 17.

[0022] The button 17 is electrically connected to the motor 12 via the control unit, and the drive gear 13 is mounted on the rotating shaft of the motor 12; the sliding gear 14 and the return spring 15 are sequentially sleeved on the limiting shaft 18 provided in the handheld part 11, and the return spring 15 pushes the sliding gear 14 to keep the sliding gear 14 in the first position; the transmission rod 16 is installed in the bracket 19 provided in the handheld part 11 and can slide back and forth;

[0023] When the sliding gear 14 is in the first position, the sliding gear 14 meshes with both the drive gear 13 and the transmission gear 161, so that the transmission rod 16 moves back and forth through the forward and reverse rotation of the motor 12.

[0024] The transmission rod 16 has transmission teeth 161 and retraction teeth 162 extending in the front and back directions on two different sides.

[0025] It also includes a manual reset mechanism, which includes an operating handle 2 and a sliding gear push assembly;

[0026] The operating handle 2 is rotatably mounted on a rotating shaft 111 inside the handheld part 11. An outwardly extending pawl 241 is slidably mounted on the operating handle 2. The pawl 241 is designed to slide past the return tooth 162 when moving from the fifth position to the sixth position. When the pawl 241 moves from the sixth position to the fifth position, the pawl 241 and the return tooth 162 cooperate to drive the transmission rod 16 to retract.

[0027] Specifically, the operation handle 2 comprises a rotating disc 21 and a handle 22, the rotating disc 21 is rotatably installed in the rotating shaft 111 provided in the handheld part 11, a guide cavity 211 extending to the circumferential surface of the rotating disc 21 is formed on the first side of the rotating disc 21, an elastic member 23 and a sliding block 24 are arranged in the guide cavity 211, the sliding block 24 is abutted by the elastic member 23 and is pushed outward by the elastic member 23, a pawl 241 is arranged on the outer side of the sliding block 24, and the pawl 241 extends out of the rotating disc 21 through a through hole provided on the outer side of the guide cavity 211.

[0028] The sliding gear pushing assembly comprises a cam 31, a pin shaft 32, a connecting rod 33, a limiting sliding block 34, a pushing spring 35 and a pressing block 36; the cam 31 is located on the second side of the rotating disc 21 and is rotatably installed on the rotating shaft 111, the pin shaft 32 is arranged on the outer side of the cam 31, and a limiting block 212 is arranged on the second side of the rotating disc 21, the limiting block 212 is arranged to have spatial interference with the protruding area of the cam 31; the pressing block 36 is located above the sliding gear 14; the pressing block 36 is arranged above the sliding gear 14 and is sleeved on the limiting shaft 18, the cam 31 and the pressing block 36 are connected through the connecting rod 33, so that when the operation handle 2 in the third position is moved to the fourth position, the limiting block abuts against the protruding area of the cam 31 to drive the cam 31 to rotate and push the pressing block to move the sliding gear 14 from the first position to the second position, thereby allowing the sliding gear 14 to be engaged with only the driving gear 13;

[0029] When the pawl 241 moves from the fifth position to the sixth position and the pawl 241 is moved past the return tooth 162, the sliding block 24 reciprocates in the guide cavity 211;

[0030] When the operation handle 2 is controlled to return from the fourth position to the third position, the pawl 241 is engaged with the return tooth 162, so that the pawl 241 returns from the sixth position to the fifth position, thereby driving the transmission rod 16 to return;

[0031] The limiting sliding block 34 is installed in the handheld part 11 in a front-and-back sliding manner and the rear end is connected with the pushing spring 35, and the front end of the limiting sliding block 34 has spatial interference with the movement track of the pin shaft 32.

[0032] Specifically, the front end of the limiting sliding block 34 is arranged to allow only the pin shaft 32 to move from the seventh position to the eighth position when the pin shaft 32 contacts the limiting sliding block 34, and not to allow the pin shaft 32 to return from the eighth position to the seventh position; the limiting sliding block 34 is also designed to allow the pin shaft 32 to return from the eighth position to the seventh position by being driven by an external force other than the pin shaft 32 after the limiting sliding block 34 is moved.

[0033] The initial position of each component is expressed as N position, where N is an odd number, such as the first, third, fifth, and seventh positions, and the terminal position of each component is expressed as M position, where M is an even number, such as the second, fourth, sixth, and eighth positions.

[0034] The use is as follows:

[0035] During the movement of the operation handle 2 from the third position to the fourth position, the limiting block 212 cooperates with the cam 31 to drive the cam 31 to rotate, the connecting rod 33 drives the pushing block 36 to move the sliding gear 14 from the first position to the second position, the corresponding pawl 241 moves from the fifth position to the sixth position, and when the pawl 241 is pushed over the return tooth 162, the sliding block 24 reciprocates in the guide cavity 211, and during this process, the pin shaft 32 also moves from the seventh position to the eighth position. During this process, the pin shaft 32 pushes the limiting sliding block 34 to move, and when the pin shaft 32 passes through the limiting sliding block 34, the limiting sliding block 34 resets to block the pin shaft 32 from returning from the eighth position to the seventh position, thereby ensuring that the sliding gear 14 cannot return from the second position to the first position, and subsequent reciprocating operation of the operation handle 2 will not hinder the return of the transmission rod 16.

[0036] Subsequently, during the movement of the operation handle 2 from the fourth position to the third position, the pin shaft 32 is blocked by the limiting sliding block 34, and the movement range of the limiting block is mainly in the non-protruding area of the cam 31, so the cam 31 cannot be brought back by the operation handle 2. Accordingly, the operation handle 2 can drive the pawl 241 to move from the sixth position to the fifth position, and since the pawl 241 cooperates with the return tooth 162, the transmission rod 16 is driven to return. By repeatedly pushing the operation handle 2, the transmission rod 16 is finally returned.

[0037] Subsequently, the limiting sliding block can be operated to release the locking state of the cam, thereby ensuring that the cam drives the sliding gear to return to the initial state, and finally resetting the entire mechanism to the initial state to realize repeated use of the product.

[0038] The limiting sliding block 34 is provided with a push rod 37, and the push rod 37 extends out of the hand-held part 11. The push rod 37 facilitates the user to push the limiting sliding block 34 to release the locking state, so that the invention returns to the initial state.

[0039] The cooperation surface of the limiting sliding block 34 and the pin shaft 32 is divided into a slope that allows the pin shaft 32 to pass through and a blocking surface that blocks the return of the pin shaft 32.

[0040] The hand-held part 11 is provided with a placing groove 112, the operating handle 2 is placed in the placing groove 112, and the placing groove 112 is provided with a cover plate. When the manual trigger is not used, the operating handle can be hidden by covering the cover plate.

[0041] Finally, it should be noted that the above only for the preferred embodiments of the present application, and is not intended to limit the application, although the foregoing detailed description of the application has been made with reference to the foregoing embodiments, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A manually resettable electric cutting and suturing device, a main body being the electric cutting and suturing device, a motor (12), a driving gear (13), a sliding gear (14), a reset spring (15), a transmission rod (16), a control unit and a button (17) being arranged in a hand-held part (11) of the electric cutting and suturing device; transmission teeth (161) and reset teeth (162) extending forward and backward are arranged on two different sides of the transmission rod (16); characterized in that Further comprising a manual reset mechanism, the manual reset mechanism comprising an operating handle (2) and a sliding gear pushing assembly; The operating handle (2) is rotatably arranged on a rotating shaft (111) arranged in the hand-held part (11), and an outwardly extending pawl (241) is slidingly arranged on the operating handle (2); the pawl (241) is designed to slide over the reset teeth (162) when moving from the fifth position to the sixth position; the pawl (241) and the reset teeth (162) cooperate when the pawl (241) moves from the sixth position to the fifth position, driving the transmission rod (16) to reset; The sliding gear pushing assembly comprises a cam (31), a pin shaft (32), a connecting rod (33), a limiting sliding block (34), a pushing spring (35) and a pressing block (36); the cam (31) is arranged on the second side of the rotating disc (21) and is rotatably arranged on the rotating shaft (111), the pin shaft (32) is arranged on the outer side of the cam (31), and the second side of the rotating disc (21) is provided with a limiting block (212), which is arranged to have spatial interference with the protruding area of the cam (31); the pressing block (36) is arranged above the sliding gear (14), and the cam (31) and the pressing block (36) are connected by the connecting rod (33); The limiting sliding block (34) is slidingly arranged in the hand-held part (11) and connected to the pushing spring (35) at the rear end, and the front end of the limiting sliding block (34) has spatial interference with the movement track of the pin shaft (32).

2. The manually resettable, electrically powered cutting and stapling device according to claim 1, wherein: The button (17) is electrically connected to the motor (12) through the control unit, and the driving gear (13) is arranged on the rotating shaft of the motor (12); the sliding gear (14) and the reset spring (15) are sequentially arranged on the limiting shaft (18) arranged in the hand-held part (11), and the reset spring (15) pushes the sliding gear (14), so that the sliding gear (14) is maintained at the first position; the transmission rod (16) is arranged in the bracket (19) arranged in the hand-held part (11) and can slide forward and backward; When the sliding gear (14) is at the first position, the sliding gear (14) is engaged with the driving gear (13) and the transmission teeth (161) at the same time.

3. The manually resettable motorized cutting and stapling device according to claim 1, wherein: The operation handle (2) comprises a rotating disc (21) and a handle (22), the rotating disc (21) is rotatably installed on a rotating shaft (111) arranged in the handheld part (11), a guide cavity (211) extending to the circumferential surface of the rotating disc (21) is arranged on the first side of the rotating disc (21), an elastic member (23) and a sliding block (24) are arranged in the guide cavity (211), the elastic member (23) abuts against the sliding block (24) and pushes the sliding block (24) outward, a pawl (241) is arranged on the outer side of the sliding block (24), and the pawl (241) extends out of the rotating disc (21) from a through hole arranged on the outer side of the guide cavity (211).

4. The manually resettable motorized cutting and stapling device according to claim 1, wherein: The front end of the limiting sliding block (34) is arranged to allow the pin shaft (32) to move from the seventh position to the eighth position and not to return from the eighth position to the seventh position when the pin shaft (32) is in contact with the limiting sliding block (34); the limiting sliding block (34) is also designed to allow the pin shaft (32) to return from the eighth position to the seventh position by being driven by an external force other than the pin shaft (32) after the limiting sliding block (34) is moved.

5. The manually resettable, electrically powered cutting and stapling device according to claim 4, wherein: The limiting sliding block (34) is provided with a lever (37), and the lever (37) extends out of the handheld part (11).

6. The manually resettable, electrically powered cutting and stapling device according to claim 4, wherein: The cooperation surface of the limiting sliding block (34) and the pin shaft (32) is divided into a slope surface allowing the pin shaft (32) to pass through and a blocking surface blocking the pin shaft (32) from returning.

7. The manually resettable motorized cutting and stapling device according to claim 1, wherein: The handheld part (11) is provided with a placing groove (112), the operation handle (2) is placed in the placing groove (112), and the placing groove (112) is provided with a cover plate.

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