A disposable electric stapler

Abstract

The present invention relates to the technical field of staplers, and discloses a disposable electric stapler, including an operation part which is used to control the execution part to perform actions such as clamping, cutting and suturing. Through the motion planning of the closing group and the suturing group of the present invention, that is, after the two move synchronously to complete the clamping of the lesion tissue, and after the closing group is locked by the locking component, the suturing group moves alone to cut and suture the lesion tissue, forming a distinct motion priority, thereby ensuring a stable clamping force on the lesion tissue. At the same time, after the closing group is locked by the locking component, the suturing group drives the execution part to perform cutting and suturing actions, avoiding the overflow of the lesion tissue when the execution part cuts and sutures the lesion tissue, which causes the closing group to retract. Furthermore, when the titanium nails form a constricting pressure on the lesion tissue and cause the overflow of the lesion tissue, the lesion tissue forms a reverse acting force on the closing group, resulting in the imbalance of the stability of the closing group is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of staplers, and particularly to a disposable electric stapler. Background Art

[0002] The stapler was the world's first suture device and has been used for gastrointestinal anastomosis for nearly a century. It was not until 1978 that tubular staplers were widely used in gastrointestinal surgery. Generally, staplers are divided into disposable or reusable ones, imported or domestic ones. It is a device used in medicine to replace traditional manual suturing. Due to the development of modern technology and the improvement of manufacturing techniques, the staplers used clinically are reliable in quality, convenient to use, tight and of appropriate tightness. Especially, its advantages such as rapid suturing, simple operation, few side effects and surgical complications have also enabled the resection of tumors that could not be removed in the past.

[0003] When using a stapler to clamp and suture and cut the diseased tissue, the diseased tissue is clamped by a clamping assembly, and then the diseased tissue is sutured with suturing titanium nails. When the titanium nails are sutured, the titanium nails form a constriction on the diseased tissue, resulting in the overflow of the diseased tissue, thereby causing the diseased tissue to form a reverse force on the clamping device, making the stability of the clamping mechanism unbalanced, resulting in a change in the position of the diseased tissue, and further resulting in a stitching deviation and causing a wrinkling phenomenon, which affects the healing of the sutured part of the diseased tissue.

[0004] In addition, the stapler is mainly used for resection and suture of diseased tissue. At present, except for skin staplers, other types of staplers mostly act on the human body interior. In addition to the execution end (staple cartridge end), the cannula on the operating end will also enter the human body under the action of the puncture tube, and there is some blood on its surface. Recycling easily leads to cross-infection.

[0005] In response to the problems in the related art, no effective solution has been proposed yet. Summary of the Invention

[0006] (I) Technical Problems to be Solved

[0007] In view of the deficiencies of the prior art, the present invention provides a disposable electric stapler, which has the advantages of self-locking after firing and resetting, and clear movement priorities for clamping and suturing, and solves the problems of cross-infection caused by recycling and the overflow of diseased tissue caused by the constriction of titanium nails on the diseased tissue, thereby causing the diseased tissue to form a reverse force on the clamping device and making the stability of the clamping mechanism unbalanced.

[0008] (II) Technical Solutions

[0009] To solve the technical problems of cross-infection caused by the above-mentioned recycling and the strangulation of the diseased tissue by titanium nails, resulting in the overflow of the diseased tissue, and thus the diseased tissue forms a reverse force on the clamping device, causing the instability of the clamping mechanism, the present invention provides the following technical solutions:

[0010] A disposable electric stapler, comprising an operating part and an executing part, wherein the operating part is used to control the executing part to clamp, cut and suture the diseased tissue, the operating part includes a handle, a closing group and a suturing group are arranged in the handle, the closing group is used to drive the executing part to bind the diseased tissue, and the suturing group is used to drive the executing part to cut and suture the diseased tissue;

[0011] When the closing group and the suturing group move synchronously until the closing group drives the executing part to complete the binding of the diseased tissue, the closing group is locked by a locking component. After the closing group is locked by the locking component, the suturing group is triggered to move independently to drive the executing part to cut and suture the diseased tissue.

[0012] Preferably, the movements of the closing group and the suturing group are driven by a power group and a power switching group;

[0013] When the closing group and the suturing group move synchronously, the power group acts on the closing group through the power switching group to drive the closing group to move and synchronously drive the suturing group to move in the same direction;

[0014] After the closing group is locked by the locking component, the power switching group operates to transfer the driving force of the power group from the closing group to the suturing group for driving the suturing group to move independently.

[0015] Preferably, the closing group and the suturing group are connected by a connecting member, so that the closing group and the suturing group can slide relative to each other after the closing group is locked by the locking component, and the suture length is changed by controlling the displacement amount when the suturing group moves relative to the closing group.

[0016] Preferably, after the suturing group moves independently to drive the executing part to complete the suturing of the diseased tissue, it moves in the reverse direction to the initial position when the executing part sutures the diseased tissue, and after it moves to the initial position, it continues to move in the reverse direction to release the locking of the locking component on the closing group, so that the closing group and the suturing group move in the reverse direction synchronously to drive the executing part to release the binding of the diseased tissue.

[0017] Preferably, after the suturing group moves in the reverse direction under the action of the power group and the power switching group to release the binding of the diseased tissue, it is reset, so that the power switching group is engaged with the self-locking group to limit its degree of freedom.

[0018] Preferably, the closing group includes a binding power connection block and a binding drive rod, the suture group includes a suture power connection block and a suture drive rod, and the binding power connection block and the suture power connection block are connected by a connecting member, so that they can not only move synchronously, but also move independently after any one of them is locked;

[0019] Wherein the binding drive rod is fixedly installed on the binding power connection block. After the binding power connection block and the suture power connection block move synchronously until the binding power connection block is locked by the locking component, the suture power connection block is attached to the suture drive rod.

[0020] Preferably, the connecting member includes a T-shaped block and a T-shaped cavity. The T-shaped block is fixedly installed on the suture power connection block, the T-shaped cavity is opened on the binding power connection block, and the T-shaped block and the T-shaped cavity are slidably matched;

[0021] The two ends of the T-shaped block are slidably matched with pressure spring guide rods. The pressure spring guide rods are fixedly installed on the surface of the T-shaped cavity. A pressure spring is fixedly installed on one side of the T-shaped block. The pressure spring is coaxially arranged with the pressure spring guide rods. At the same time, a ring pressure sensor is coaxially arranged with the pressure spring guide rods. One end of the pressure spring is fixedly installed on the ring pressure sensor, and the ring pressure sensor is fixedly installed on the surface of the T-shaped cavity.

[0022] Preferably, the locking component includes an unlocking bolt group and a locking bolt group. The unlocking bolt group is arranged on the binding power connection block, and the locking bolt group is fixedly installed in the handle. When the binding power connection block moves to the position where the unlocking bolt group and the locking bolt group are coaxial, the locking bolt group squeezes the unlocking bolt group along its central axis direction, so that the unlocking bolt group moves along its central axis direction to complete the locking of the locking bolt group to the binding power connection block;

[0023] Wherein the locking bolt group includes a locking column and a lock head. The lock head moves relative to the locking column along its central axis direction. One end of the lock head is fixedly installed with a spring seat. The spring seat is slidably matched with the inner wall of the locking column. One side of the spring seat is fixedly installed with one end of a locking spring, and the other end of the locking spring is fixedly installed on the inner wall of the locking column;

[0024] The unlocking bolt group includes a guiding block opened on the binding power connection block. A locking groove is opened on the guiding block. An unlocking bolt is slidably fitted on the inner wall of the locking groove. A spring plate is fixedly installed in the middle of the unlocking bolt. One side of the spring plate is fixedly installed with an unlocking spring. The unlocking spring is fixedly installed on the locking groove. And one end of the unlocking bolt is flush with the surface of the guiding block before the unlocking spring deforms.

[0025] A relief groove is opened on the lower surface of the suture power connection block to provide a movement space for the unlocking bolt after displacement.

[0026] Preferably, the power group includes a motor and a helical gear assembly. The motor drives the driving gear to rotate through the helical gear assembly. The driving gear meshes with a rack to drive the rack to move in a direction close to the execution part.

[0027] The power switching group includes a motor. The motor is embedded and fixedly installed on one side of the rack. The motor is fixedly installed with a Z-shaped switching rod. One end of the Z-shaped switching rod is fixedly installed with an arc-shaped slider. The arc-shaped slider is slidably fitted with an upper arc-shaped slide rail and a lower arc-shaped slide rail. The upper arc-shaped slide rail and the lower arc-shaped slide rail are respectively fixedly installed on one side of the suture power connection block and the binding power connection block. And when the two move synchronously on the binding power connection block, one side of them coincides.

[0028] Preferably, the self-locking group is used to limit the position of the Z-shaped switching rod. The self-locking group includes a U-shaped lock catch. On both sides inside the U-shaped lock catch, self-locking cone blocks are slidably fitted along a direction perpendicular to the inner side surface. One end of the self-locking cone block extends into the U-shaped lock catch and is fixedly installed with a self-locking seat. One side of the self-locking seat is fixedly installed with a self-locking spring. And the self-locking spring is fixedly installed in the U-shaped lock catch.

[0029] (III) Beneficial effects

[0030] Compared with the prior art, the present invention provides a disposable electric stapler, which has the following beneficial effects:

[0031] 1. Through the motion planning of the closing group and the suturing group of the present invention, that is, after the two move synchronously to complete the clamping of the diseased tissue, and after locking the closing group through the locking component, the suturing group moves independently to cut and suture the diseased tissue, forming a distinct motion priority, thereby ensuring a stable clamping force on the diseased tissue. At the same time, after locking the closing group with the locking component, the suturing group drives the execution part to perform cutting and suturing actions, avoiding the overflow of the diseased tissue when the execution part cuts and sutures the diseased tissue, which causes the closing group to retract. Furthermore, when the titanium nail forms a constricting pressure on the diseased tissue and the diseased tissue overflows, resulting in a reverse force of the diseased tissue on the closing group and causing the imbalance of the stability of the closing group, this problem is solved.

[0032] 2. After the relative displacement occurs between the suturing group and the closing group of the present invention, the cutting and suturing length is obtained according to the relative displacement amount between the suturing group and the closing group. Furthermore, the suturing length is controlled by controlling the displacement amount when the suturing group moves relative to the closing group.

[0033] 3. After the suturing group moves independently to drive the execution part to cut and suture the diseased tissue, the power group moves in the reverse direction to drive the suturing group to move in the reverse direction to the initial position of the suturing group when the execution part sutures the diseased tissue through the power switching group. Along with the continuous movement of the power group, the power group squeezes the locking component to release the locking of the locking component on the closing group, thereby realizing the release of the restraint on the diseased tissue after the cutting and suturing of the execution part is reset. Furthermore, during the reset process of the cutting and suturing, continuous clamping is performed on the suturing position to achieve the purpose of hemostasis at the suturing site.

[0034] 4. After the locking of the locking component on the closing group is released, the suturing group and the closing group move in the reverse direction to their initial positions under the action of the power group and the power switching group. Since the object connected to the free end of the power switching group is converted from the closing group to the suturing group at this time, the attitude of the power switching group changes. When the suturing group and the closing group move in the reverse direction to their initial positions, the power switching group is clamped by the self-locking group, making its attitude unable to change, thereby achieving the power switching that cannot clamp and suture the diseased tissue again. At the same time, the self-locking group is used to limit the degree of freedom of the power switching group, so that the power group cannot transmit power through the power switching group, thereby cutting off the operation of the execution part, preventing the stapler from being fired twice, and avoiding the cross-infection phenomenon caused by the repeated use of the stapler without disinfection. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a partial cross-sectional view of the three-dimensional structure of the present invention;

[0036] Figure 2 is the internal three-dimensional structure diagram of the present invention;

[0037] Figure 3 This is an exploded view of the internal three-dimensional structure of the present invention;

[0038] Figure 4 This is a partial structure diagram of the present invention;

[0039] Figure 5 This is one of the installation structure diagrams of the suture group and the closing group of the present invention;

[0040] Figure 6 This is the second installation structure diagram of the suture group and the closing group of the present invention;

[0041] Figure 7 This is one of the exploded views of the installation structure of the suture group and the closing group of the present invention;

[0042] Figure 8 This is the second exploded view of the installation structure of the suture group and the closing group of the present invention;

[0043] Figure 9 This is a three-dimensional structure diagram of the binding power connection block of the present invention;

[0044] Figure 10 This is a cross-sectional view of the three-dimensional structure of the binding power connection block of the present invention;

[0045] Figure 11 This is a three-dimensional structure diagram of the self-locking group of the present invention;

[0046] Figure 12 This is a cross-sectional view of the three-dimensional structure of the self-locking group of the present invention;

[0047] Figure 13 This is a simplified cross-sectional view of the locking bolt group of the present invention.

[0048] In the figure: 1. Handle; 2. Closing group; 201. Binding power connection block; 202. Binding drive rod; 3. Suture group; 301. Suture power connection block; 302. Suture drive rod; 4. Locking assembly; 401. Unlocking bolt group; 4011. Guide block; 4012. Locking groove; 4013. Unlocking bolt; 4014. Spring plate; 4015. Unlocking spring; 4016. Avoidance groove; 402. Locking bolt group; 4021. Locking column; 4022. Lock head; 4023. Spring seat; 4024. Locking spring; 5. Power group; 501. Motor; 502. Helical gear assembly; 503. Driving tooth; 504. Rack; 6. Power switching group; 601. Motor; 602. Z-shaped switching rod; 603. Arc-shaped slider; 604. Upper arc-shaped slide rail; 605. Lower arc-shaped slide rail; 7. Connecting piece; 701. T-shaped block; 702. T-shaped cavity; 703. Pressure spring guide rod; 704. Pressure spring; 705. Annular pressure sensor; 8. Self-locking group; 801. U-shaped lock catch; 802. Self-locking cone block; 803. Self-locking seat; 804. Self-locking spring. Detailed implementation mode

[0049] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0050] As introduced in the background art, there are deficiencies in the prior art. To solve the above technical problems, the present application proposes a disposable electric stapler.

[0051] Embodiment 1:

[0052] Please refer to Figures 1-3 , a disposable electric stapler, including an operation part and an execution part. The operation part is used to control the execution part to clamp, cut and suture the lesion tissue. The operation part includes a handle 1. A closing group 2 and a suture group 3 are arranged in the handle 1. The closing group 2 is used to drive the execution part to bind the lesion tissue, and the suture group 3 is used to drive the execution part to cut and suture the lesion tissue;

[0053] When the closing group 2 and the suture group 3 move synchronously until the closing group 2 drives the execution part to complete the binding of the lesion tissue, the closing group 2 is locked by the locking assembly 4. After the closing group 2 is locked by the locking assembly 4, the suture group 3 is triggered to move alone to drive the execution part to cut and suture the lesion tissue.

[0054] When processing the diseased tissue, the execution part is inserted into the body through an auxiliary tool such as a puncture tube, and the position of the execution part is adjusted through the operation part so that the diseased tissue is located between the execution parts, facilitating the processing of the diseased tissue; after the position adjustment of the execution part is completed, the closing group 2 and the suture group 3 move synchronously, and the closing group 2 drives the execution part to bind the diseased tissue to complete the clamping of the diseased tissue. And after the execution part binds the diseased tissue (i.e., the clamping is completed), the closing group 2 is locked under the action of the locking component 4. After the closing group 2 is locked under the action of the locking component 4, the closing group 2 cannot move. At the same time, the locking of the closing group 2 triggers the independent movement of the suture group 3, so that the suture group 3 drives the execution part to cut and suture the diseased tissue;

[0055] Thus, through the motion planning of the closing group 2 and the suture group 3, that is, the two move synchronously to complete the clamping of the diseased tissue, and after the closing group 2 is locked by the locking component, the suture group 3 moves independently to cut and suture the diseased tissue, forming a distinct motion priority, thus ensuring a stable clamping force on the diseased tissue. At the same time, after the locking component 4 locks the closing group 2, the suture group 3 drives the execution part to perform the cutting and suturing action, avoiding the back-off of the closing group 2 caused by the overflow of the diseased tissue when the execution part cuts and sutures the diseased tissue. Furthermore, when the titanium nail forms a constricting pressure on the diseased tissue and causes the overflow of the diseased tissue, it causes a reverse force of the diseased tissue on the closing group, resulting in the imbalance of the stability of the closing group.

[0056] Further, referring to Figures 2-5 For the above-mentioned closing group 2 and suture group 3, the movements of the closing group 2 and the suture group 3 are driven by a power group 5 and a power switching group 6;

[0057] When the closing group 2 and the suture group 3 move synchronously, the power group 5 acts on the closing group 2 through the power switching group 6 to drive the closing group 2 to move and synchronously drive the suture group 3 to move in the same direction;

[0058] After the closing group 2 is locked by the locking component 4, the power switching group 6 operates so that the driving force of the power group 5 is transferred from the closing group 2 to the suture group 3 to drive the suture group 3 to move independently.

[0059] The closing group 2 and the suture group 3 are intermediate power transmission mechanisms, and the two are mainly used to transmit the power of the power group 5 to different positions on the execution part, so that the execution part achieves the purpose of clamping, cutting and suturing the diseased tissue. Specifically, in application, the process of power transmission is as follows:

[0060] Since one end of the power switching group 6 is fixedly installed on the power group 5 and the other end is a free end, when the two move synchronously, the free end of the power switching group 6 is connected to the closing group 2, connecting the closing group 2 to the power group 5. Thus, the power group 5 drives the closing group 2 to move. At the same time, the closing group 2 drives the suture group 3 to move synchronously. After the closing group 2 and the suture group 3 move to the position where the locking component 4 locks the closing group 2, the power switching group 6 moves so that the closing group 2 connected to the free end becomes the suture group 3. As a result, the suture group 3 continues to move under the condition that the closing group 2 is locked by the locking component 4, providing power for the suture group 3 and enabling the suture group 3 to drive the execution part to perform cutting and suturing on the lesion tissue.

[0061] Further, referring to Figures 5-7 , for the above-mentioned closing group 2 and suture group 3, the closing group 2 and the suture group 3 are connected by a connecting member 7, so that the closing group 2 and the suture group 3 can slide relative to each other after the closing group 2 is locked by the locking component 4, and the suture length is changed by controlling the displacement amount when the suture group 3 moves relative to the closing group 2.

[0062] Since the closing group 2 and the suture group 3 are connected by the connecting member 7, when the power group 5 drives the closing group 2 to move through the power switching group 6, the closing group 2 drives the connecting member 7 to move, thereby enabling the suture group 3 to move, achieving their synchronous movement. And after the closing group 2 is locked by the locking component 4, due to the action of the connecting member 7, the suture group 3 deforms relative to the closing group 2. Thus, while the closing group 2 stably provides the clamping force for the lesion tissue, the suture group 3 provides the driving force for the cutting and suturing of the lesion tissue.

[0063] In addition, after the suture group 3 and the closing group 2 have a relative displacement, the cutting and suturing length is obtained according to the relative displacement amount between the suture group 3 and the closing group 2. Then, the suture length is changed by controlling the displacement amount when the suture group 3 moves relative to the closing group 2, avoiding the cutting and suturing lengths being too long, increasing the healing time at the sutured part and affecting the rehabilitation efficiency.

[0064] Further, referring to Figures 7-9 , for the above-mentioned suture group 3, after the suture group 3 moves independently to drive the execution part to suture the lesion tissue, it moves in the reverse direction to the initial position when the execution part sutures the lesion tissue. And after it moves to the initial position, it continues to move in the reverse direction to release the locking of the closing group 2 by the locking component 4, so that the closing group 2 and the suture group 3 move in the reverse direction synchronously to drive the execution part to release the restraint on the lesion tissue.

[0065] After the suture group 3 moves independently to drive the actuator to cut and suture the lesion tissue, the power group 5 moves in the reverse direction to drive the suture group 3 to move in the reverse direction to the initial position of the suture group when the actuator sutures the lesion tissue through the power switching group 6. Along with the continuous movement of the power group 5, the power group 5 squeezes the locking component 4 to release the locking of the locking component 4 on the closing group 2. Thus, after the cutting and suturing of the lesion tissue by the actuator is reset, the restraint on the lesion tissue is released. Furthermore, during the reset process of cutting and suturing, continuous clamping of the suture position is achieved to stop bleeding at the suture site.

[0066] Further, referring to Figures 2-4 , for the above-mentioned suture group 3, after the suture group 3 moves in the reverse direction under the action of the power group 5 and the power switching group 6 to release the restraint on the lesion tissue and then resets, the power switching group 6 is engaged with the self-locking group 8 to limit its degree of freedom.

[0067] Thus, after the locking of the locking component 4 on the closing group 2 is released, the suture group 3 and the closing group 2 move in the reverse direction to their initial positions under the action of the power group 5 and the power switching group 6. Since the object connected to the free end of the power switching group 6 is converted from the closing group 2 to the suture group 3 at this time, the attitude of the power switching group 6 changes. When the suture group 3 and the closing group 2 move in the reverse direction to their initial positions, the power switching group 6 is engaged by the self-locking group 8, making its attitude unable to change. Thus, the power switching for suturing after the lesion tissue cannot be clamped again is achieved. At the same time, the self-locking group 8 is used to limit the degree of freedom of the power switching group 6, so that the power group 5 cannot transmit power through the power switching group 6, thereby cutting off the operation of the actuator and preventing the reuse of this stapler, avoiding the cross-infection phenomenon caused by repeated use.

[0068] Embodiment 2: Based on Embodiment 1

[0069] Further, referring to Figure 3 , and Figure 7 , for the above-mentioned closing group 2, the closing group 2 includes a restraint power connection block 201 and a restraint drive rod 202, the suture group 3 includes a suture power connection block 301 and a suture drive rod 302, and the restraint power connection block 201 and the suture power connection block 301 are connected by a connecting member 7, enabling them to not only move synchronously but also move independently after either of them is locked;

[0070] Wherein the restraint drive rod 202 is fixedly installed on the restraint power connection block 201. After the restraint power connection block 201 and the suture power connection block 301 move synchronously until the restraint power connection block 201 is locked by the locking component 4, the suture power connection block 301 fits with the suture drive rod 302;

[0071] When the power unit 5 drives the constrained power connection block 201 to move through the power switching unit 6, the constrained power connection block 201 synchronously drives the suture power connection block 301 to move through the connecting member 7. After the constrained power connection block 201 is locked by the locking assembly 4, at this time, the suture power connection block 301 is in contact with the suture driving rod 302, and the free end of the power switching unit 6 changes its position, so that the power unit 5 drives the suture power connection block 301 to continue to move, so that the execution part can perform cutting and suturing on the basis of clamping the diseased tissue.

[0072] Further, referring to Figures 6-10 , for the above-mentioned connecting member 7, the connecting member 7 includes a T-shaped block 701 and a T-shaped cavity 702. The T-shaped block 701 is fixedly installed on the suture power connection block 301, the T-shaped cavity 702 is opened on the constrained power connection block 201, and the T-shaped block 701 and the T-shaped cavity 702 are in sliding fit;

[0073] Both ends of the T-shaped block 701 are slidably fitted with pressure spring guide rods 703. The pressure spring guide rods 703 are fixedly installed on the surface of the T-shaped cavity 702. A pressure spring 704 is fixedly installed on one side of the T-shaped block 701. The pressure spring 704 is coaxially arranged with the pressure spring guide rod 703. At the same time, an annular pressure sensor 705 is coaxially arranged with the pressure spring guide rod 703. One end of the pressure spring 704 is fixedly installed on the annular pressure sensor 705, and the annular pressure sensor 705 is fixedly installed on the surface of the T-shaped cavity 702.

[0074] The principle of the constrained power connection block 201 and the suture power connection block 301 moving in cooperation through the connecting member 7 is as follows:

[0075] When the power unit 5 drives the constrained power connection block 201 to move through the power switching unit, since the T-shaped block 701 is fixedly installed on the suture power connection block 301, the T-shaped cavity 702 is opened on the constrained power connection block 201, and the T-shaped block 701 and the T-shaped cavity 702 are in sliding fit, the constrained power connection block 201 drives the T-shaped block 701 to move, and then drives the suture power connection block 301 to move, thus realizing the synchronous movement of the constrained power connection block 201 and the suture power connection block 301;

[0076] When the constrained power connection block 201 and the suture power connection block 301 move synchronously until the constrained power connection block 201 is locked by the locking assembly 4, the free end of the power switching assembly 6 changes its position, so that the power of the power unit 5 is transmitted to the suture power connection block 301, so that the suture power connection block 301 can move independently after the constrained power connection block 201 is locked by the locking assembly 4. The specific principle is:

[0077] When the restraint power connection block 201 is locked by the locking assembly 4, the power of the power group 5 is transmitted to the suture power connection block 301, causing the suture power connection block 301 to move relative to the restraint power connection block 201, so that the execution part can clamp the diseased tissue and then perform suture resection. When the suture power connection block 301 moves, the suture power connection block 301 drives the T-shaped block 701 to move in the T-shaped cavity 702, so that the T-shaped block 701 squeezes the compression spring 704, causing the compression spring 704 to deform and generate elastic force. Since one end of the compression spring 704 is fixedly installed on the annular pressure sensor 705, the annular pressure sensor 705 monitors its elastic force value in real time. According to the elastic force value and the spring coefficient of the compression spring 704, its deformation amount is calculated in real time, so as to calculate the length of the cutting and suturing of the diseased tissue in the execution part according to its deformation amount. Furthermore, the deformation amount of the suture power connection block 301 relative to the restraint power connection block 201 is changed by the pressure value detected by the annular pressure sensor 705, so as to achieve the purpose of controlling the length of the cutting and suturing of the diseased tissue in the execution part.

[0078] Further, referring to Figure 6 、 Figure 9 、 Figure 10 and Figure 13 For the above-mentioned locking assembly 4, the locking assembly 4 includes an unlocking bolt group 401 and a locking bolt group 402. The unlocking bolt group 401 is arranged on the restraint power connection block 201, and the locking bolt group 402 is fixedly installed in the handle 1. When the restraint power connection block 201 moves to the position where the unlocking bolt group 401 and the locking bolt group 402 are coaxial, the locking bolt group 402 squeezes the unlocking bolt group 401 along its central axis direction, causing the unlocking bolt group 401 to displace along its central axis direction to complete the locking of the restraint power connection block 201 by the locking bolt group 402;

[0079] Wherein: the locking bolt group 402 includes a locking column 4021 and a lock head 4022. The lock head 4022 moves relative to the locking column 4021 along its central axis direction. One end of the lock head 4022 is fixedly installed with a spring seat 4023. The spring seat 4023 is slidably matched with the inner wall of the locking column 4021, and one side of the spring seat 4023 is fixedly installed with one end of a locking spring 4024. The other end of the locking spring 4024 is fixedly installed on the inner wall of the locking column 4021;

[0080] The unlocking bolt group 401 includes a guiding block 4011 formed on the binding power connection block 201. A locking groove 4012 is formed on the guiding block 4011. An unlocking bolt 4013 is slidably engaged with the inner wall of the locking groove 4012. A spring plate 4014 is fixedly installed in the middle of the unlocking bolt 4013. An unlocking spring 4015 is fixedly installed on one side of the spring plate 4014. The unlocking spring 4015 is fixedly installed on the locking groove 4012, and one end of the unlocking bolt 4013 is flush with the surface of the guiding block 4011 before the unlocking spring 4015 deforms.

[0081] A relief groove 4016 is formed on the lower surface of the suture power connection block 301 to provide a movement space for the unlocking bolt 4013 after displacement.

[0082] Thus, when the binding power connection block 201 moves to drive the actuator to clamp the diseased tissue, since the guiding block 4011 is formed on the binding power connection block 201, with the movement of the binding power connection block 201, the guiding block 4011 contacts the lock head 4022, and with the continuous movement of the binding power connection block 201, the guiding block 4011 presses the lock head 4022, causing the lock head 4022 to press the locking spring 4024 through the spring seat 4023, compressing the locking spring 4024 to generate an elastic force. When the lock head 4022 fits with the surface of the guiding block 4011, the locking spring 4024 stops compressing. Then, with the continuous movement of the binding power connection block 201, the lock head 4022 is coaxial with the locking groove 4012. At this time, the lock head 4022 enters the locking groove 4012 under the elastic force of the locking spring 4024. Since one end of the unlocking bolt 4013 is flush with the surface of the guiding block 4011 before the unlocking spring 4015 deforms, when the lock head 4022 enters the locking groove 4012, it presses the unlocking bolt 4013 to displace, causing one end of the unlocking bolt 4013 to enter the relief groove 4016, completing the position locking of the binding power connection block 201; one end of the unlocking bolt 4013 entering the relief groove 4016 is wedge-shaped to facilitate the reset of the unlocking bolt 4013 under pressure.

[0083] When unlocking the binding power connection block 201, the suture power connection block 301 moves in the reverse direction, causing the relief groove 4016 to press the unlocking bolt 4013. The unlocking bolt 4013 is reset under the action of the elastic force generated by the unlocking spring 4015 when it is displaced and the pressing force of the relief groove 4016 on the unlocking bolt 4013, pushing the lock head 4022 out of the locking groove 4012. Thus, the suture power connection block 301 drives the binding power connection block 201 to reset through the T-shaped block 701, completing the unlocking of the binding power connection block 201.

[0084] Further, referring toFigures 3-5 The power unit 5 includes a motor 501 and a bevel gear assembly 502. The motor 501 drives the driving gear 503 to rotate through the bevel gear assembly 502. The driving gear 503 meshes with a rack 504 to drive the rack 504 to move in a direction close to the actuator;

[0085] The power switching group 6 includes a motor 601. The motor 601 is embedded and fixedly installed on one side of the rack 504. The motor 601 is fixedly installed with a Z-shaped switching rod 602. One end of the Z-shaped switching rod 602 is fixedly installed with an arc-shaped slider 603. The arc-shaped slider 603 is slidably engaged with an upper arc-shaped slide rail 604 and a lower arc-shaped slide rail 605. The upper arc-shaped slide rail 604 and the lower arc-shaped slide rail 605 are respectively fixedly installed on one side of the suture power connection block 301 and the restraint power connection block 201, and when the two move synchronously on the restraint power connection block 201, their one sides coincide.

[0086] The bevel gear group 502 is two bevel gears meshing with each other. The direction of power transmission is changed by the two bevel gears, so that one of the bevel gears is driven to rotate by the motor 501, and then the other bevel gear is driven to rotate. Since the other bevel gear is coaxially arranged with the driving gear 503, the driving gear 503 is driven to move. The driving gear 503 meshes with the rack 504, so that the rotation of the motor 501 drives the rack 504 to move in a direction close to or away from the actuator;

[0087] The motor 601 is fixedly installed on one side of the rack 504, and the output shaft of the motor 601 is fixedly installed with a Z-shaped switching rod 602. When the rack 504 drives the restraint power connection block 201 to move, the free end of the Z-shaped switching rod 602 drives the arc-shaped slider 603 to cooperate with the lower arc-shaped slide rail 605 on the restraint power connection block 201 to realize the power transmission to the restraint power connection block 201. When the rack 504 drives the suture power connection block 301 to move, the free end of the Z-shaped switching rod 602 drives the arc-shaped slider 603 to cooperate with the upper arc-shaped slide rail 604 on the suture power connection block 301 to realize the power transmission to the suture power connection block 301.

[0088] Further, referring to Figure 2 、 Figure 11 and Figure 12 The self-locking group 8 includes a U-shaped lock 801. On both sides of the inner side of the U-shaped lock 801, self-locking cone blocks 802 are slidably engaged along a direction perpendicular to the inner side surface. One end of the self-locking cone block 802 extends into the U-shaped lock 801 and is fixedly installed with a self-locking seat 803. One side of the self-locking seat 803 is fixedly installed with a self-locking spring 804, and the self-locking spring 804 is fixedly installed in the U-shaped lock 801;

[0089] Thus, when the binding power connection block 201 and the suture power connection block 301 are reset to the initial positions, the Z-shaped switching rod 602 presses the self-locking cone block 802, causing the self-locking cone block 802 to move towards both sides of the U-shaped lock 801, thereby enabling the self-locking spring 804 to generate elastic force. When the Z-shaped switching rod 602 passes through the self-locking cone block 802, the self-locking cone block 802 is reset under the action of the elastic force of the self-locking spring 804 to limit the position of the Z-shaped switching rod 602.

[0090] Embodiment 3: Based on Embodiment 2

[0091] As Figures 1-2 shown, a disposable electric stapler further includes a carrier mounting bracket, which is fixedly installed on the inner wall of the handle 1 and is used for the installation and guidance of the rack, the binding power connection block, the suture power connection block, etc., and is also used for the installation of the self-locking assembly and the locking group.

[0092] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A disposable electric stapler, comprising an operating part and an executing part, wherein the operating part is used to control the executing part to clamp, cut and suture the lesion tissue. It is characterized in that: The operating part includes a handle (1), and a closing group (2) and a suturing group (3) are arranged in the handle (1). The closing group (2) is used to drive the executing part to constrict the lesion tissue, and the suturing group (3) is used to drive the executing part to cut and suture the lesion tissue. When the closing group (2) and the suturing group (3) move synchronously until the closing group (2) drives the executing part to complete the constriction of the lesion tissue, the closing group (2) is locked by a locking component (4). After the closing group (2) is locked by the locking component (4), the suturing group (3) is triggered to move independently to drive the executing part to cut and suture the lesion tissue. The movements of the closing group (2) and the suturing group (3) are driven by a power group (5) and a power switching group (6). When the closing group (2) and the suturing group (3) move synchronously, the power group (5) acts on the closing group (2) through the power switching group (6) to drive the closing group (2) to move and synchronously drive the suturing group (3) to move in the same direction. After the closing group (2) is locked by the locking component (4), the power switching group (6) operates to transfer the driving force of the power group (5) from the closing group (2) to the suturing group (3) for driving the suturing group (3) to move independently. The closing group (2) and the suturing group (3) are connected by a connecting piece (7) so that the closing group (2) and the suturing group (3) can slide relative to each other after the closing group (2) is locked by the locking component (4), and the suture length is changed by controlling the displacement amount when the suturing group (3) moves relative to the closing group (2). The closing group (2) includes a constriction power connection block (201) and a constriction driving rod (202), and the suturing group (3) includes a suturing power connection block (301) and a suturing driving rod (302). The constriction power connection block (201) and the suturing power connection block (301) are connected by a connecting piece (7) so that they can not only move synchronously, but also the suturing power connection block (301) can move independently after the constriction power connection block (201) is locked. The constriction driving rod (202) is fixedly installed on the constriction power connection block (201). After the constriction power connection block (201) and the suturing power connection block (301) move synchronously until the constriction power connection block (201) is locked by the locking component (4), the suturing power connection block (301) fits with the suturing driving rod (302). The connecting member (7) includes a T-shaped block (701) and a T-shaped cavity (702). The T-shaped block (701) is fixedly installed on the suture power connection block (301), and the T-shaped cavity (702) is opened on the restraint power connection block (201), and the T-shaped block (701) and the T-shaped cavity (702) are in sliding fit; Pressure spring guide rods (703) are slidably fitted at both ends of the T-shaped block (701). The pressure spring guide rods (703) are fixedly installed on the surface of the T-shaped cavity (702). A pressure spring (704) is fixedly installed on one side of the T-shaped block (701). The pressure spring (704) is coaxially arranged with the pressure spring guide rods (703). At the same time, an annular pressure sensor (705) is coaxially arranged with the pressure spring guide rods (703). One end of the pressure spring (704) is fixedly installed on the annular pressure sensor (705), and the annular pressure sensor (705) is fixedly installed on the surface of the T-shaped cavity (702); The power group (5) includes a motor (501) and a helical gear assembly (502). The motor (501) drives the drive gear (503) to rotate through the helical gear assembly (502). The drive gear (503) meshes with a rack (504) to drive the rack (504) to move in a direction close to the execution part; The power switching group (6) includes a motor (601). The motor (601) is embedded and fixedly installed on one side of the rack (504). The motor (601) is fixedly installed with a Z-shaped switching rod (602). One end of the Z-shaped switching rod (602) is fixedly installed with an arc-shaped slider (603). The arc-shaped slider (603) is slidably fitted with an upper arc-shaped slide rail (604) and a lower arc-shaped slide rail (605). The upper arc-shaped slide rail (604) and the lower arc-shaped slide rail (605) are respectively fixedly installed on one side of the suture power connection block (301) and the restraint power connection block (201), and when the two move synchronously on the restraint power connection block (201) and the suture power connection block (301), one side of them coincides.

2. A disposable electric stapler according to claim 1, characterized in that: After the suture group (3) moves independently to drive the execution part to suture the lesion tissue and then moves in the reverse direction to the initial position when the execution part sutures the lesion tissue, and after it moves to the initial position, it continues to move in the reverse direction to release the locking of the locking component (4) on the closing group (2), so that the closing group (2) and the suture group (3) move in the reverse direction synchronously to drive the execution part to release the restraint on the lesion tissue.

3. A disposable electric stapler according to claim 2, characterized in that: After the suture group (3) moves in the reverse direction under the action of the power group (5) and the power switching group (6) to release the restraint on the lesion tissue, it is reset, so that the power switching group (6) is engaged with the self-locking group (8) to limit its degree of freedom.

4. A disposable electric stapler according to claim 3, characterized in that: the locking assembly (4) includes an unlocking bolt group (401) and a locking bolt group (402), the unlocking bolt group (401) is arranged on the binding power connection block (201), the locking bolt group (402) is fixedly installed in the handle (1), when the binding power connection block (201) moves to the coaxial center of the unlocking bolt group (401) and the locking bolt group (402), the locking bolt group (402) squeezes the unlocking bolt group (401) along its central axis direction, so that the unlocking bolt group (401) displaces along its central axis direction to complete the locking of the binding power connection block (201) by the locking bolt group (402); wherein the locking bolt group (402) includes a locking column (4021) and a lock head (4022), the lock head (4022) moves relative to the locking column (4021) along its central axis direction, one end of the lock head (4022) is fixedly installed with a spring seat (4023), the spring seat (4023) is slidably matched with the inner wall of the locking column (4021), and one end of a locking spring (4024) is fixedly installed on one side of the spring seat (4023), and the other end of the locking spring (4024) is fixedly installed on the inner wall of the locking column (4021); the unlocking bolt group (401) includes a guiding block (4011) opened on the binding power connection block (201), a locking groove (4012) is opened on the guiding block (4011), an unlocking bolt (4013) is slidably matched with the inner wall of the locking groove (4012), a spring plate (4014) is fixedly installed in the middle of the unlocking bolt (4013), an unlocking spring (4015) is fixedly installed on one side of the spring plate (4014), the unlocking spring (4015) is fixedly installed on the locking groove (4012), and one end of the unlocking bolt (4013) is flush with the surface of the guiding block (4011) before the unlocking spring (4015) deforms; a relief groove (4016) is opened on the lower surface of the suture power connection block (301) to provide a movement space for the unlocking bolt (4013) after it displaces.

5. A disposable electric stapler according to claim 4, characterized in that: the self-locking group (8) is used to limit the position of the Z-shaped switching rod (602), the self-locking group (8) includes a U-shaped lock catch (801), both sides inside the U-shaped lock catch (801) are slidably matched with self-locking cone blocks (802) along the direction perpendicular to the inner side surface, one end of the self-locking cone block (802) extends into the U-shaped lock catch (801) and is fixedly installed with a self-locking seat (803), a self-locking spring (804) is fixedly installed on one side of the self-locking seat (803), and the self-locking spring (804) is fixedly installed in the U-shaped lock catch (801).

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