Anastomat capable of manually controlling opening and closing of jaw
By using a manually controlled mechanical transmission structure, the problems of delayed operation and inaccurate angle control of existing electric staplers have been solved, enabling rapid and precise opening and closing of the stapler jaws, thus improving surgical efficiency and safety.
Patent Information
- Application Number
- CN202511628580.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-07
- Publication Date
- 2026-03-27
AI Technical Summary
In existing electric staplers with replaceable staple cartridges, the opening and closing of the jaws is controlled by a motor, resulting in low operating efficiency, significant delay, and inability to precisely control the opening and closing angle, which affects the speed of the operation.
It adopts a manually controlled mechanical transmission structure, which drives the transmission rack component through the closing handle to achieve precise opening and closing of the jaws, and is equipped with an unlocking button to prevent accidental operation and ensure safety.
It enables zero-delay opening and closing of the jaws, improving the convenience and safety of operation, allowing for rapid location and precise cutting of lesions, and improving surgical efficiency.
Smart Images
Figure CN121730908A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the medical anastomat manufacturing technical field, specifically speaking, it is a kind of anastomat that can manually control the opening and closing of the jaw, which is reasonable in structure, easy to operate, can realize the opening and closing of the jaw without time delay, and can accurately control the opening and closing angle of the jaw, and is convenient for quickly finding lesion tissue. BACKGROUND
[0002] In endoscopic surgery, endoscopic instruments are usually used to perform medical procedures, and anastomosis is usually used for esophagus, gastrointestinal resection, disconnection and anastomosis, and can also be used for resection and disconnection of lung, liver, gallbladder and pancreas. During the operation, the lesion tissue to be resected needs to be clamped by the jaw part of the anastomat. During the operation, the surgeon needs to open and close the jaw part of the anastomat to turn over the tissue so as to accurately find the lesion tissue to be resected.
[0003] In the existing replaceable cartridge electric anastomat, the opening and closing of the jaw of the anastomat is completely controlled by pressing the closing button to rotate the motor to drive the I-shaped knife to advance and retreat, thereby realizing the closing and opening of the anastomat. When clamping and turning over the tissue, the action frequency of the motor is greatly increased, which not only slows down the efficiency, but also the control mode has operation delay between the closing handle and the jaw, the operation experience is poor, the opening and closing angle of the jaw of the anastomat cannot be accurately controlled, and the operation cannot be quickly carried out. SUMMARY
[0004] The present application proposes a kind of anastomat that can manually control the opening and closing of the jaw, which is reasonable in structure, easy to operate, can realize the opening and closing of the jaw without time delay, and can accurately control the opening and closing angle of the jaw by manually operating the closing handle, and is convenient for quickly finding lesion tissue.
[0005] The present application achieves the following measures: An anastomat capable of manually controlling the opening and closing of the jaw is provided with a support sleeve, an adjusting knob, a holding and operating part, wherein the front section of the support sleeve is provided with a nail abutting seat and a nail cartridge, the nail abutting seat and the nail cartridge jointly constitute the jaw of the anastomat, an I-shaped knife is located at the back of the jaw, the holding and operating part is provided with a main body framework, the top of the main body framework is provided with a transmission rack part coaxially arranged along the support sleeve, the I-shaped knife is connected with the transmission rack part through an I-shaped knife pull rod in the support sleeve, the lower back part of the main body framework is provided with a motor for driving the transmission rack part to pull the I-shaped knife pull rod and then push the I-shaped knife to close the jaw or pull back the I-shaped knife to open the jaw, characterized in that a manual opening and closing driving mechanism is further arranged on the main body framework, the manual opening and closing driving mechanism comprises a closing handle, a closing transmission branch arm and a slider part, wherein the closing handle is hinged to the lower part of the main body framework through a torsion spring pin shaft and a closing handle torsion spring, the upper end of the closing handle is connected with the slider part through the closing transmission branch arm, the slider part is slidably connected with the main body framework and located at the front end of the transmission rack part, the slider part is further connected with the transmission rack part, so that when the closing handle is pulled tight, the slider part is moved through the closing transmission branch arm, the slider part drives the transmission rack part to pull the I-shaped knife pull rod and then drives the I-shaped knife to push the jaw to close; when the closing handle is released, the closing transmission branch arm is rotated, the slider part connected with the closing transmission branch arm is moved and slidably connected with the main body framework to return to the original position, the slider part 7 drives the transmission rack part to return to the original position through the I-shaped knife pull rod, and the I-shaped knife is pulled back to the original position, at this time the jaw is opened.
[0006] The transmission rack part comprises a transmission rack and a transmission rack movable slider, wherein a straight slot-shaped slider straight slot is formed on the transmission rack, a slider straight slot hole shaft is formed on the inner wall of the slider straight slot, the transmission rack movable slider is provided with a movable slider straight slot matched with the slider straight slot hole shaft, the movable slider straight slot is connected with the transmission rack through the slider straight slot hole shaft, because the shape of the movable slider straight slot is a straight slot structure, the transmission rack movable slider can slide relative to the transmission rack, the slider straight slot provides effective space for the sliding of the transmission rack movable slider; the front end of the transmission rack is further provided with a slider pin plug block located on one side of the front end of the slider straight slot, which is used for cooperating with the slider pin in the slider part; the front end of the transmission rack movable slider is provided with a pull rod groove for connecting with the I-shaped knife pull rod, the rear end of the transmission rack movable slider is provided with a movable slider straight slot, the lower part of the transmission rack movable slider is provided with a slider pin slot matched with the slider pin in the slider part, when in use, the slider pin can be inserted into the slider pin slot to drive the transmission rack movable slider to move.
[0007] The front end of the slider body of the slider component is close to the I-shaped knife, the rear end is close to the closing handle, slider tension spring pins are symmetrically arranged on the two sides of the slider body and are used for being connected with the slider tension spring, slider tension spring columns are arranged on the main body framework and are used for cooperating with the slider tension spring, the slider tension spring columns are located at the rear end of the framework slide and are used for cooperating with the slider tension spring to limit the initial position of the slider component, a hole cavity for accommodating the pin spring and the slider pin is arranged on the top surface of the slider body, a vertical slot is arranged on the slider pin, the pin block shaft is inserted into the vertical slot of the slider pin in the hole cavity on the outer side of the slider body, and the slider pin is prevented from being taken out of the hole cavity under the action of the pin spring below the slider body; the slider body is arranged at the lower part of the main body framework and is located at the front side of the closing handle, a slider rail pin is arranged on the outer side of the upper part of the slider body, the slider rail pin is embedded in the framework slide on the main body framework, the upper and lower surfaces of the slider rail pin are flat surfaces, the inner wall of the framework slide is effectively matched, the moving stability is improved, the framework slide is arranged in parallel with the support sleeve, is located at the middle and lower parts of the main body framework, is located below the transmission rack component and is located at the front side of the top of the closing handle, a slider guide column is arranged at the front end of the slider body, the slider guide column is arranged in parallel with the support sleeve, is in a cylindrical shape, a strip-shaped protrusion is arranged along the central axis of the cylindrical body on the outer side of the slider guide column, the upper and lower surfaces of the strip-shaped protrusion are flat surfaces, the slider guide column is matched with the slider guide column track at the middle and lower parts of the main body framework, the slider guide column is embedded in the slider guide column track, and the slider guide column can stably move along the slider guide column track, so that the sliding stability is improved from the front side of the slider body; in addition, a slider slide is further arranged on the outer side of the lower part of the slider body, the slider slide is a strip-shaped block which is convex to the side surface of the slider body, a framework base slide which is used for cooperating with the slider slide is arranged on the main body framework, is located at the bottom of the main body framework, the upper and lower surfaces of the slider slide are flat surfaces, the slider slide is embedded in the framework base slide, the contact area of the slider slide and the framework base slide is effectively improved, and the movement of the slider body is further corrected and stabilized; a notch is arranged at the rear end of the slider body, a slider joint pin is arranged in the notch, the upper end of the closing transmission support arm is connected with the slider body through the slider joint pin, so that the top of the closing handle can drive the slider body to move through the closing transmission support arm.
[0008] The holding and operating part in the application is further provided with a locking mechanism, which comprises an unlocking button, a button supporting arm, a supporting arm tension spring, and an unlocking button blocking shaft. The outer shell of the holding and operating part is a handle shell, the unlocking button is located on the side of the handle shell, a shell sliding groove is formed on the handle shell, the shell sliding groove is inclined from top to bottom, the unlocking button is fixedly connected with the button supporting arm in the handle shell through the shell sliding groove, the front end of the button supporting arm is connected with the unlocking button blocking shaft on the main body framework, the unlocking button blocking shaft is provided with an unlocking button blocking block which can abut against the closing blocking block on the top of the closing handle, one end of the supporting arm tension spring is hung on the supporting arm tension spring hook on the button supporting arm, and the other end is hung on the supporting arm tension spring stand column of the main body framework. During the process of pulling up the closing handle, the inclined surface of the closing blocking block on the top of the closing handle pushes the unlocking button blocking block, so that the unlocking button blocking shaft overcomes the tension of the supporting arm tension spring, thereby rotating the unlocking button blocking block. When the closing handle is pulled up completely, the closing blocking block will pass the unlocking button blocking block, the unlocking button blocking block returns to the initial position under the action of the supporting arm tension spring, and blocks the closing blocking block, thereby preventing the closing handle from returning under the action of the closing handle torsion spring and the closing transmission arm pushing force. At this time, the jaws of the anastomat are completely closed, and even if the closing handle is released, the jaws will not be opened, and the locking is completed. When the operation is completed, the unlocking button is pressed, the unlocking button drives the button supporting arm to rotate downward, the button supporting arm rotating drives the unlocking button blocking shaft to overcome the tension of the supporting arm spring, so that the unlocking button blocking block is separated from the closing blocking block, and the locking is released. Thereafter, the closing handle can be pulled back to the original position under the action of the closing handle torsion spring and the closing transmission arm, and cooperates with the slider spring to pull back the slider part.
[0009] Compared with the prior art, the opening and closing of the anastomat control jaws is completely controlled by the closing handle, and the internal transmission is completely realized by mechanical transmission, so that the operation delay does not occur. In clinical use, when the anastomat jaws are used to turn the lesion tissue, the closing handle can be controlled at will to realize the operation, which is convenient and fast. In addition, by providing the unlocking button, after the closing handle is completely closed, the anastomat jaws are in the closed state, and the closing of the jaws can be released by pressing the unlocking button. The position of the unlocking button is not on the same operation straight line as the closing handle, the hidden danger of misoperation is eliminated, and the safety of the instrument is increased. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is a general assembly structure diagram of the application.
[0011] Figure 2 It is a sectional structure diagram of the anastomat handle part in the application.
[0012] Figure 3 It is a partial three-dimensional structure diagram of the closing handle in the application.
[0013] Figure 4 It is a partial transmission structure diagram of the closing handle in the application.
[0014] Figure 5 Structure diagram of the closed handle in the semi-closed state of the present application.
[0015] Figure 6 Structure diagram of the closed handle in the fully closed state of the present application.
[0016] Figure 7 Structure diagram of the closed handle in the semi-closed state of the present application. Figure 7 (a) is the A-A direction sectional view, and (b) is the top view of the closed handle.
[0017] Figure 8 Structure diagram of the closed handle in the semi-closed state of the present application.
[0018] Figure 9 Structure diagram of the closed handle in the semi-closed state of the present application.
[0019] Figure 10 Structure diagram of the closed handle in the semi-closed state of the present application. Figure 10 (a) is the A-A direction sectional view, and (b) is the top view of the closed handle.
[0020] Figure 11 Structure diagram of the closed handle in the semi-closed state of the present application. Figure 11 (a) is the first angle structure diagram of the main body framework, and (b) is the second angle structure diagram of the main body framework.
[0021] Figure 12 Structure diagram of the closed handle in the semi-closed state of the present application.
[0022] Figure 13 Structure diagram of the closed handle in the semi-closed state of the present application.
[0023] Figure 14 Structure diagram of the closed handle in the semi-closed state of the present application.
[0024] Reference signs: nail seat 1, nail bin 2, handle shell 3, shell sliding groove 3-1, unlocking button 4, closing handle 5, closing block 5-1, button support arm 6, support arm tension spring hook 6-1, slider component 7, slider main body 7-1, slider guide column 7-1-1, slider sliding groove 7-1-2, slider tension spring pin 7-2, slider rail pin 7-3, slider joint pin 7-4, slider bolt 7-5, bolt straight groove 7-5-1, bolt spring 7-6, bolt block shaft 7-7, support arm tension spring 8, slider tension spring 9, main body framework 10, framework sliding groove 10-1, support arm tension spring stand 10-2, slider tension spring stand 10-3, unlocking button block shaft hole 10-4, torsion spring pin shaft hole 10-5, slider guide column rail 10-6, framework base sliding groove 10-7, transmission rack component 11, transmission rack movable slider 11-1, transmission rack 11-2, pull rod groove 11-1-1, movable slider straight groove 11-1-2, slider bolt slot 11-1-3, slider straight groove hole shaft 11-2-1, slider bolt pressing block 11-2-2, slider straight groove opening 11-2-3, motor 12, closing handle torsion spring 13, I-shaped knife pull rod 14, unlocking button block shaft 15, unlocking button block 15-1, I-shaped knife 16, closing transmission support arm 17, torsion spring pin shaft 18. DETAILED DESCRIPTION
[0025] The application will be further described below in conjunction with the drawings and examples.
[0026] The application provides an anastomat capable of manually controlling the opening and closing of the jaw, the transmission rack component of the anastomat is composed of a transmission rack movable slider and a transmission rack, the transmission rack movable slider is provided with a movable slider straight groove, the transmission rack is provided with a slider straight groove opening, the straight groove structure of the movable slider straight groove ensures that the transmission rack movable slider can be separately displaced by a distance relative to the transmission rack, and the slider straight groove opening structure provides displacement space for the sliding of the transmission rack movable slider; wherein the transmission rack movable slider on the transmission rack component is provided with a slider bolt slot, so that the slider bolt on the slider component can be smoothly inserted into the transmission rack movable slider, and the displacement of the slider component can drive the displacement of the transmission rack movable slider; The transmission rack on the transmission rack component of the anastomat is provided with a slider bolt pressing block, during the movement of the transmission rack to the direction of the I-shaped knife, the slider bolt can be pressed into the slider main body of the slider component, so that the transmission rack can be smoothly displaced under the pulling of the slider component; The slider main body of the anastomat is provided with a slider bolt, the upper surface of the slider bolt is a slope structure, the middle part is a straight groove opening structure, the slope structure ensures that the displacement of the transmission rack can be smoothly passed, the straight groove opening structure, the bolt block shaft and the bolt spring are matched with each other, so that the slider bolt can be extended and retracted up and down; The application is provided with a closing handle, a closing transmission branch arm, a slider component, a skeleton slide is arranged on the main body skeleton, and the four components jointly form a linkage structure, the manual pressing of the closing handle converts the rotary motion of the closing handle into the translational motion of the slider component on the skeleton slide; a slider slide and a slider guide column are arranged on the slider main body of the slider component, a slider tension spring pin and a slider track pin are arranged on the slider component, a skeleton slide, a skeleton base slide and a slider guide column track are arranged on the main body skeleton, the contact surface of the slider tension spring pin and the slider track pin with the skeleton slide is a plane structure; the slider slide is in contact with the skeleton base slide; the slider guide column is in contact with the slider guide column track; the three components jointly act to ensure the stable displacement of the slider component on the skeleton slide of the main body skeleton; the slider tension spring pin of the slider component is provided with a groove structure, one end of the slider tension spring is connected with the slider tension spring pin, and the other end is connected with a slider tension spring stand, the structure combination effectively ensures that the slider component can return to the initial position under the action of the slider tension spring tension; the branch arm tension spring hook structure is arranged on the button branch arm, one end of the branch arm tension spring is connected with the branch arm tension spring hook, and the other end is connected with a branch arm tension spring stand, the structure combination effectively ensures that the unlocking button stop block on the unlocking button stop shaft can return to the initial position under the action of the branch arm tension spring tension; the unlocking button stop block is arranged on the unlocking button stop shaft, the closing handle is provided with a closing stop block, the closing stop block is a circular arc inclined surface structure, in the closing process of the closing handle, it is ensured that the closing stop block can smoothly overcome the corresponding branch arm tension spring tension of the unlocking button stop block, after being blocked by the unlocking button stop block, the unlocking button stop shaft and the closing handle can form a interlocking structure, after the button branch arm drives the unlocking button stop shaft to rotate by a certain angle, the interlocking of the unlocking button stop shaft and the closing handle is released, the pressing of the unlocking button is released, and the unlocking button can return to the initial position under the action of the branch arm tension spring tension. Embodiment
[0027] The example proposes a kind of anastomat capable of manually controlling jaw opening and closing, which is provided with nail seat 1, nail bin 2, handle shell 3, unlocking button 4, closing handle 5 and other components, wherein nail seat 1 is connected with nail bin 2, and the two are combined to form anastomat jaw, I-shaped knife 16 is located in the middle part of anastomat jaw; As Figure 1 Figure 2 Figure 4 Figure 7 Figure 8 As shown, unlocking button 4 is located outside handle shell 3, unlocking button 4 is fixedly connected with button branch arm 6, finger presses unlocking button 4, unlocking button 4 will move around shell sliding groove 3-1, button branch arm 6 is connected with unlocking button stop shaft 15, unlocking button stop shaft 15 is installed in unlocking button stop shaft hole 10-4 on main body skeleton 10, unlocking button stop shaft 15 is provided with unlocking button stop block 15-1, as Figure 3 Figure 11As shown, one end of the support arm tension spring 8 is hung on the support arm tension spring hook 6-1 on the button support arm 6, and the other end is hung on the support arm tension spring column 10-2 of the main frame 10. One end of the slider tension spring 9 is hung on the slider tension spring pin 7-2, and the other end is hung on the slider tension spring column 10-3.
[0028] like Figure 2 Figure 3 Figure 4 As shown, the closing handle 5 is mounted on the main frame 10 via a torsion spring pin 18. The closing handle torsion spring 13 is mounted in the closing handle 5 via the torsion spring pin 18. The closing handle 5 is provided with a closing stop 5-1. The longer end of the closing handle torsion spring 13 rests on the main frame 10, ensuring that when the closing handle 5 is pressed and released, it returns to its original position under the spring force of the closing handle torsion spring 13. The motor 12 is mounted on the main frame 10. Figure 8 Figure 9 Figure 10 As shown, the slider component 7 is mounted on the main frame 10. The slider component 7 consists of a slider body 7-1, a slider tension spring pin 7-2, a slider track pin 7-3, a slider joint pin 7-4, a slider pin 7-5, a pin spring 7-6, and a pin stop shaft 7-7. The pin spring 7-6 is installed inside the slider body 7-1, and the slider pin 7-5 is installed on the pin spring 7-6. The pin stop shaft 7-7 fixes the slider pin 7-5 in the slider body 7-1 by inserting the pin straight groove 7-5-1 on the slider pin 7-5. The slider tension spring pin 7-2 and the slider track pin 7-3 are installed on both sides of the slider body 7-1, and the protruding parts are installed on the skeleton slide 10-1 of the main frame 10. The closed transmission arm 17 is connected to the slider component 7 through the slider joint pin 7-4.
[0029] like Figure 7 Figure 8 Figure 10 Figure 12 Figure 13 Figure 14As shown, the slider pin 7-5 is inserted into the notch groove of the movable slider 11-1 of the transmission rack. One end of the I-type cutter pull rod 14 is installed in the pull rod groove 11-1-1 on the movable slider 11-1 of the transmission rack, and the other end is connected to the I-type cutter 16. The movable slider 11-1-2 on the transmission rack movable slider 11-1 is connected to the slider straight slot hole shaft 11-2-1 on the transmission rack 11-2. Because the hole of the slider straight slot hole shaft 11-2-1 is a straight slot structure, the movable slider 11-1 can slide relative to the transmission rack 11-2. The slider straight slot opening 11-2-3 provides effective space for the sliding of the transmission rack movable slider 11-1. The slider pin 7-5 is inserted into the slider pin slot opening 11-1-3. The movement of the slider pin 7-5 will drive the movement of the transmission rack movable slider 11-1. The transmission rack 11-2 is provided with a slider pin pressing block 11-2-2. Pushing the transmission rack 11-2 will press the slider pin 7-5 on the slider component 7 into the block body 7-1. Figure 9 Figure 10 As shown, the slider body 7-1 is provided with a slider guide post 7-1-1, and the main frame 10 is provided with a slider guide post track 10-6. When the slider component 7 slides on the main frame 10, the slider guide post track 10-6 will stabilize the slider component 7 through the slider guide post 7-1-1. The slider body 7-1 is provided with a slider slide 7-1-2, and the main frame 10 is provided with a frame base slide 10-7. The frame base slide 10-7 will stabilize the slider component 7 through the slider slide 7-1-2.
[0030] When using this example, as follows: Figures 1 to 14 As shown, when the closing handle 5 is manually moved towards the motor 12, it will overcome the elastic force of the closing handle torsion spring 13 and push the slider component 7 to overcome the tension of the slider spring 9 through the closing transmission support arm 17. The slider component 7 is provided with a slider spring pin 7-2 and a slider track pin 7-3. The upper and lower surfaces of the slider spring pin 7-2 and the slider track pin 7-3 are planar structures, which cooperate with the plane of the skeleton slide 10-1 on the main frame 10, so that the slider component 7 moves in the opposite direction to the closing handle 5 in the main frame 10. When the slider component 7 moves, the slider pin 7-5 on the slider component 7 will move synchronously, as shown. Figure 7As shown, since the slider bolt 7-5 is inserted into the slider bolt slot 11-1-3, the movement of the slider bolt 7-5 will drive the movement of the transmission rack movable slider 11-1, and the movement of the transmission rack movable slider 11-1 will drive the movement of the I-shaped knife pull rod 14, which will push the I-shaped knife 16 to move. During this process, the slider main body 7-1 is provided with a slider guide column 7-1-1, and the main body framework 10 is provided with a slider guide column track 10-6. When the slider component 7 slides on the main body framework 10, the slider guide column track 10-6 will stabilize the sliding of the slider component 7 through the slider guide column 7-1-1; the slider main body 7-1 is provided with a slider slide 7-1-2, and the main body framework 10 is provided with a framework base slide 10-7. The framework base slide 10-7 will stabilize the sliding of the slider component 7 through the slider slide 7-1-2.
[0031] As shown in Figure 5 As shown, after the I-shaped knife 16 moves, the anastomat jaw will be in a closed state. After the user releases the closure handle 5, the closure handle 5 will return to the initial position under the elastic force of the closure handle torsional spring 13, and pull the slider component 7 through the closure transmission branch 17. The slider component 7 will return to the initial position under the double pulling of the closure transmission branch 17 and the slider tension spring 9. During this process, since the slider bolt 7-5 in the slider component 7 is inserted into the slider bolt slot 11-1-3 of the transmission rack movable slider 11-1, the slider component 7 will drive the movable slider 11-1 to return to the initial position. The movable slider 11-1 will pull the I-shaped knife 16 back to the initial position through the I-shaped knife pull rod 14, and then the anastomat jaw will be reopened. This structure completely realizes the linkage of the movement of the closure handle 5 and the opening and closing of the anastomat jaw through mechanical structure transmission. This structure precisely controls the opening and closing angle of the anastomat jaw, and controls the opening and closing of the anastomat jaw through the closure handle 5 to continuously clamp and turn the tissue, so as to effectively locate the lesion tissue and precisely cut the lesion tissue, thereby increasing the applicability of the electric anastomat and greatly improving the surgical efficiency.
[0032] As shown in Figure 3 Figure 6 Figure 7As shown, the inclined surface of the closure block 5-1 pushes the unlocking button block 15-1 to rotate a certain angle against the tension of the arm tension spring 8 during the closure process. When the closure handle 5 is fully closed, the closure block 5-1 will completely pass the unlocking button block 15-1, and the unlocking button block 15-1 will return to the initial position under the tension of the arm tension spring 8. At this time, the unlocking button block 15-1 will block the closure block 5-1, preventing the closure handle 5 from returning to the initial position under the combined action of the closure handle torsion spring 13 and the closure transmission arm 17. At this time, the anastomosis clamp will be in a fully closed state. Since the unlocking button block 15-1 and the closure block 5-1 completely lock the closure handle 5, when the closure handle 5 is released, it will not return to the initial position under the combined action of the closure handle torsion spring 13 and the closure transmission arm 17.
[0033] As shown, Figure 6 Figure 7 Figure 8 Figure 12 Figure 13 Figure 14 As shown, when the lesion tissue is placed in the anastomosis clamp, the closure handle 5 is fully closed, the start button of the motor 12 is pressed, the gear of the motor 12 rotates, and the transmission rack 11-2 on the transmission rack component 11 moves. During the movement of the transmission rack 11-2, the slider pin press block 11-2-2 will smoothly pass through the inclined surface of the slider pin 7-5, and will press the slider pin 7-5 into the slider body 7-1 of the slider component 7 against the tension of the pin spring 7-6. Then the transmission rack 11-2 pushes the transmission rack movable slider 11-1 to move. Since the I-shaped knife pull rod 14 is clamped in the pull rod groove 11-1-1, it drives the I-shaped knife pull rod 14 to move, which pushes the I-shaped knife 16 to complete the cutting of the lesion tissue in the anastomosis clamp. After cutting, the start button of the motor 12 is released, the motor 12 reverses, the transmission rack 11-2 on the transmission rack component 11 returns to the initial position, and the I-shaped knife 16 returns to the initial position. The anastomosis clamp is opened, and the slider pin 7-5 in the slider component 7 is reinserted into the slider pin slot 11-1-3 in the transmission rack movable slider 11-1 under the tension of the pin spring 7-6. At this time, the I-shaped knife 16 returns to the initial position as shown in the figure. Figure 6The position shown; then, press the unlocking button 4 with the button arm 6 downward rotation, button arm 6 rotation with the unlocking button block shaft 15 to overcome the arm tension spring 8 force, make the unlocking button block 15-1 and closing block 5-1-1 off, closing handle 5 in the closing handle torsional spring 13 elastic effect under the initial position, and through the closing transmission arm 17 pull the slider component 7, slider component 7 in the closing transmission arm 17 and slider tension spring 9 double pull under the initial position, in this process, because the slider component 7 in the slider plug 7-5 insert transmission rack movable slider 11-1 slider plug slot 11-1-3 in the middle, slider component 7 will bring movable slider 11-1 back to the initial position, movable slider 11-1 through I type knife pull rod 14 will I type knife 16 pull back to the initial position, then, the anastomat jaw reopens, such as Figure 1 The position shown. At this time, one anastomat one working cycle is completed.
[0034] Compared with the prior art, the internal mechanical transmission structure is used to realize the linkage control of the closing handle and the anastomat jaw. This structure can accurately control the opening and closing angle of the anastomat jaw, and will not appear operation delay. The anastomat jaw is controlled to open and close to clamp and turn the tissue, so that the lesion tissue is effectively positioned and found, and the lesion tissue is accurately cut, thereby increasing the applicability of the electric anastomat and greatly improving the operation efficiency.
Claims
1. A stapler with manually controllable jaw opening and closing, comprising a support sleeve, an adjustment knob, and a grip and operating part, wherein the front section of the support sleeve has an anvil and a staple cartridge, and an I-type blade is located behind the staple cartridge; the grip and operating part has a main frame, and the top of the main frame has a transmission rack component coaxially arranged along the support sleeve; the I-type blade is connected to the transmission rack component via an I-type blade pull rod inside the support sleeve; the lower rear part of the main frame has a motor for driving the transmission rack component, so as to drive the transmission rack component to pull the I-type blade pull rod, thereby pushing the I-type blade to close the jaws or pulling back the I-type blade to open the jaws, characterized in that... The main frame is also equipped with a manual opening and closing drive mechanism, which includes a closing handle, a closing transmission arm, and a slider component. The closing handle is hinged to the lower part of the main frame via a torsion spring pin and a closing handle torsion spring. The upper end of the closing handle is connected to the slider component via the closing transmission arm. The slider component 7 slides with the main frame and is located at the front end of the rack and pinion transmission mechanism. The slider component is also connected to the rack and pinion transmission mechanism. When the closing handle is tightened, the slider component moves through the closing transmission arm. The slider component drives the transmission rack component to pull the blade pull rod, thereby pulling the I-type blade to close the jaws. When the closing handle is released, the closing transmission arm rotates. The slider component connected to the closing transmission arm moves and slides back to its original position with the main frame. The slider component moves back to its original position in conjunction with the transmission rack component and pulls the I-type blade back to its initial position via the I-type blade pull rod, opening the jaws.
2. The stapler with manually controllable jaw opening and closing according to claim 1, characterized in that, The transmission rack component includes a transmission rack and a movable slider. The transmission rack has a straight groove-shaped slider slot, and a slider slot hole shaft is formed on the inner wall of the slider slot. The movable slider has a movable slider slot that mates with the slider slot hole shaft. The movable slider slot is connected to the transmission rack via the slider slot hole shaft. Because the hole of the movable slider slot is a straight groove structure, the movable slider can slide relative to the transmission rack. The slider slot provides effective space for the sliding of the movable slider. The front end of the transmission rack also has a slider pin pressure block located on one side of the front end of the slider slot, for mates with the slider pin in the slider component. The front end of the movable slider has a pull rod groove for connecting to the I-type tool pull rod. The rear end of the movable slider has a movable slider slot, and the lower part of the movable slider has a slider pin slot that mates with the slider pin in the slider component. In use, the slider pin can be inserted into the slider pin slot to drive the movable slider of the transmission rack.
3. The anastomosis device with manually controllable jaw opening and closing according to claim 1, characterized in that, In the slider component, the end of the slider body near the I-shaped blade is the front end, and the end near the closing handle is the rear end. Slider spring pins are symmetrically arranged on both sides of the slider body for connection with the slider spring. A matching slider spring post is provided on the main frame. The slider spring post is located at the rear end of the frame slide rail and works with the slider spring to define the initial position of the slider component. A cavity is formed on the top surface of the slider body to accommodate the pin spring and the slider pin. A vertical slot is formed on the slider pin. The pin retainer is inserted from the outside of the slider body into the vertical slot of the slider pin in the cavity, preventing the slider pin from dislodging under the action of the pin spring below. The slider body is located at the lower part of the main frame and in front of the closing handle. A slider track pin is provided on the upper outer side of the slider body. The slider track pin is fitted into the frame slide rail on the main frame. Both the upper and lower surfaces of the slider track pin are flat surfaces to effectively fit against the inner wall of the frame slide rail, improving movement stability.
4. The stapler with manually controllable jaw opening and closing according to claim 3, characterized in that, The skeleton slide is arranged parallel to the support sleeve, located in the lower part of the main skeleton, below the transmission rack component and in front of the top of the closing handle; the front end of the slider body is provided with a slider guide post, which is arranged parallel to the support sleeve. The slider guide post is cylindrical in shape, and its outer side is provided with a strip-shaped protrusion arranged along the central axis of the cylindrical body. The upper and lower surfaces of the strip-shaped protrusion are flat and cooperate with the slider guide post track in the lower part of the main skeleton, so that after the slider guide post is embedded in the slider guide post track, it can move smoothly along the slider guide post track, thereby improving the stability of the sliding action from the front side of the slider body.
5. The stapler with manually controllable jaw opening and closing according to claim 4, characterized in that, The lower outer side of the slider body is also provided with a slider slide, which is a strip-shaped block protruding from the side surface of the slider body. Correspondingly, the main frame is provided with a frame base slide for cooperating with the slider slide, located at the bottom of the main frame. The upper and lower surfaces of the slider slide are both flat surfaces. By fitting into the frame base slide, the contact area between the two can be effectively increased, and the movement of the slider body can be further corrected and stabilized. A slot is opened at the rear end of the slider body, and a slider joint pin is set in the slot. The upper end of the closing transmission support arm is connected to the slider body through the slider joint pin, so that the top of the closing handle can push the slider body to move through the closing transmission support arm.
6. The anastomosis device with manually controllable jaw opening and closing according to claim 1, characterized in that, The grip and operation unit is also equipped with a locking mechanism, which includes an unlock button, a button support arm, a support arm spring, and an unlock button stop shaft. The outer shell of the grip and operation unit is a handle shell. The unlock button is located on the side of the handle shell. A shell groove is opened on the handle shell, which is inclined from top to bottom. The unlock button passes through the shell groove and is fixedly connected to the button support arm inside the handle shell. The front end of the button support arm is connected to the unlock button stop shaft on the main frame. The unlock button stop shaft is equipped with an unlock button stop block that can abut against the closing stop block at the top of the closed handle. One end of the support arm spring is hung on the support arm spring hook on the button support arm, and the other end is hung on the support arm spring column of the main frame.