Anastomat body and anastomat

Abstract

The application provides an anastomat body and an anastomat. The anastomat body comprises a limiting piece, a first pushing piece and a second pushing piece. The limiting piece is provided with a receiving space and a plurality of sliding grooves which are communicated with the receiving space in the circumferential direction. The second pushing piece comprises a plurality of sliding blocks which are sequentially arranged in the circumferential direction. When the jaws are opened, at least part of the second pushing piece is located in the receiving space, and the sliding blocks are located in the sliding grooves. In this state, the first pushing piece is forced to abut against the second pushing piece, and after the sliding blocks move along the sliding grooves and move out of the sliding grooves, the second pushing piece rotates and abuts against the limiting piece, so that the jaws are switched and locked in the closed state. When the jaws are closed, the first pushing piece is forced to abut against the second pushing piece to make it rotate, so that the sliding blocks enter the sliding grooves, and the jaws are switched to the opened state. By making the first pushing piece abut against the second pushing piece to make it advance and retreat, when the second pushing piece abuts against the limiting piece after advancing, the jaws can be locked in the closed state, and the anastomat body has a simple structure.

Description

Technical Field

[0001] This application relates to the field of medical devices, and more particularly to a stapler body and a stapler. Background Technology

[0002] With the continuous development of medical device technology, electric staplers are gradually replacing traditional manual sutures or conventional staplers. Electric staplers utilize electric drive systems and automated control technology, enabling rapid and accurate connection and closure of tissues during surgery. This significantly reduces surgical time and trauma, minimizes the risk of tissue damage, bleeding, and infection, and promotes patient recovery and healing. Furthermore, electric staplers can provide consistent anastomosis force and pressure, unaffected by variations in manual operation, thus lowering the technical requirements for the operator.

[0003] In related technologies, electric staplers are complex in structure because they need to selectively move components such as jaws and cutting blades, and also require a locking structure to keep the jaws closed. Summary of the Invention

[0004] This application provides a simple anastomosis device body and anastomosis device.

[0005] This application provides a stapler body, including: a jaw driving assembly for switching jaws connected to the stapler body between a closed state and an open state. The jaw driving assembly includes a limiting member, a first pushing member, and a second pushing member. The limiting member has a receiving space and a plurality of sliding grooves arranged along the circumferential direction of the receiving space and communicating with the receiving space. The second pushing member includes a plurality of sliders arranged sequentially along its circumferential direction. In the open state, at least a portion of the second pushing member is located within the receiving space, and the sliders are located within the sliding grooves. In this state, the first pushing member is forced against the second pushing member. After the sliders move along the sliding grooves and move out of the sliding grooves, the second pushing member rotates and abuts against the limiting member, so that the jaws are switched and locked in the closed state. In the closed state, the first pushing member is forced against the second pushing member, and the second pushing member rotates, so that the sliders enter the sliding grooves, and the jaws are switched to the open state.

[0006] Furthermore, the first pusher includes a plurality of first helical teeth, and the second pusher includes a plurality of second helical teeth. When the first pusher abuts against the second pusher, the first helical teeth abut against the second helical teeth.

[0007] Furthermore, the first pusher includes a first columnar portion and a rod-shaped portion connected to the first columnar portion, the first helical tooth is disposed at the free end of the first columnar portion, the first columnar portion forms a cavity, the second pusher includes a second columnar portion, the second helical tooth and the slider are disposed on the second columnar portion, and the free end of the second columnar portion is assembled in the cavity.

[0008] Furthermore, the jaw drive assembly includes an elastic element, which is compressed when the second pusher moves out of the receiving space, and the elastic force of the elastic element causes the second pusher to enter the receiving space.

[0009] Furthermore, the jaw drive assembly includes a top block, the second pusher is rotatably connected to the top block and moves the top block forward, and the top block compresses the elastic member when it moves.

[0010] Furthermore, the stapler body includes a housing, the housing has a receiving cavity, the top block and the elastic element are located in the receiving cavity, the top block can move forward and backward along the receiving cavity, and the opposite ends of the elastic element abut against the housing and the top block respectively.

[0011] Furthermore, the receiving space and the slide are disposed on the housing.

[0012] Furthermore, the jaw drive assembly includes a sleeve fixed to the top block, the sleeve being connected to the jaws, and the top block moving the sleeve forward and backward.

[0013] Furthermore, the anastomosis device body includes a stop member, which can switch between a stop position and a non-stop position. In the stop position, the stop member abuts against the first push member, so that the first push member abuts against the second push member; in the non-stop position, the stop member disengages from abutting against the first push member.

[0014] Furthermore, the anastomosis device body includes a power unit that drives the abutting member to rotate between the abutting position and the non-abutting position.

[0015] Furthermore, the anastomosis device body includes a transmission mechanism, the transmission mechanism includes a first gear, the power device drives the first gear to rotate, and the first gear drives the abutment member to rotate.

[0016] Furthermore, the stapler body includes a cutting blade drive assembly, the cutting blade drive assembly includes a rack, the transmission mechanism includes a second gear, the first gear includes a plurality of first teeth and a toothless portion, when the abutment member abuts against the first push member, the second teeth of the second gear are located at the toothless portion, when the jaws are in the closed state, the first gear drives the second gear to rotate and the second gear drives the rack to move forward and backward, so as to drive the cutting blade connected to the stapler body to fire and retract.

[0017] Furthermore, in the open state, the power device rotates clockwise in the first direction, the second gear does not rotate, and when the abutment abuts against the first pusher, the jaws switch from the open state to the closed state. When the power device continues to rotate in the first direction, the first gear drives the second gear to rotate. In the closed state, the power device rotates counterclockwise in the second direction opposite to the first direction, the first gear drives the second gear to rotate, and when the abutment abuts against the first pusher, the jaws switch from the closed state to the open state.

[0018] This application also provides a stapler, including jaws and / or a cutting blade and the stapler body described above.

[0019] Compared with the prior art, the stapler body of this application is equipped with a limiting member, a first pushing member and a second pushing member. The first pushing member abuts against the second pushing member to make it move forward and backward. When the second pushing member moves forward and abuts against the limiting member, the jaws can be locked in a closed state. The stapler body has a simple structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the stapler according to an embodiment of this application.

[0021] Figure 2 yes Figure 1 The schematic diagram shown is of the stapler body, in which only a portion of the stapler body's components are shown.

[0022] Figure 3 yes Figure 2 A schematic diagram of the anastomosis device body from another perspective.

[0023] Figure 4 yes Figure 1 A schematic diagram of the casing is shown.

[0024] Figure 5 yes Figure 4 An enlarged view of the circled portion at point A of the outer casing shown.

[0025] Figure 6 yes Figure 3A schematic diagram of the first pusher component of the anastomosis device body.

[0026] Figure 7 yes Figure 3 A schematic diagram of the second pusher component of the anastomosis device body.

[0027] Figure 8 yes Figure 1 The side view of the anastomosis device body shown shows the abutment disengaging from the abutment of the first pusher.

[0028] Figure 9 yes Figure 8 The diagram shows a cross-sectional view of the anastomosis device along line X1-X1.

[0029] Figure 10 yes Figure 1 The side view of the anastomosis device body shown shows the abutting member abutting against the first pushing member.

[0030] Figure 11 yes Figure 10 An enlarged view of the circled portion at point B on the body of the anastomosis device shown.

[0031] Figure 12 yes Figure 1 The side view of the anastomosis device body shown shows the first pusher abutting against the limiting member.

[0032] Figure 13 yes Figure 12 A schematic cross-sectional view of the anastomosis device body along line X2-X2.

[0033] Figure 14 yes Figure 13 An enlarged view of the circled portion at point C in the cross-sectional schematic diagram shown.

[0034] Figure 15 yes Figure 3 The diagram shows the abutment detaching from the first pusher when it abuts against it.

[0035] Figure 16 yes Figure 1 The diagram shows the body of the stapler, in which the stapler is in electric mode.

[0036] Figure 17 yes Figure 16 An enlarged view of the D prescription box portion of the anastomosis device body shown.

[0037] Figure 18 yes Figure 1 The diagram shows the body of the stapler, in manual mode.

[0038] Figure 19 yes Figure 18An enlarged view of the E prescription box portion of the anastomosis device body shown.

[0039] Figure 20 yes Figure 16 The diagram shows the stopper, the second elastic device, and the first limiting shaft of the anastomosis device body.

[0040] Figure 21 yes Figure 4 A schematic diagram of the casing from another perspective.

[0041] Figure 22 yes Figure 21 A schematic diagram of the outer casing from another perspective.

[0042] Figure 23 yes Figure 19 A schematic diagram of the connector shown.

[0043] Figure 24 yes Figure 23 The diagram shows a cross-sectional view of the connector.

[0044] Explanation of reference numerals: Anastomosing device, 300; Anastomosing device body, 100; jaws, 200; power unit, 1; transmission mechanism, 2; first gear, 21; first shaft, 210; first tooth, 211; toothless part, 212; first hole, 213; second gear, 22; second shaft, 220; second tooth, 221; third gear, 23; third shaft, 230; third tooth, 231; fourth gear, 24; fourth tooth. 241; Recess; 242; Fifth gear; 25; Fifth tooth; 251; Connector; 26; Operating hole; 261; Shoulder; 262; First connector; 263; Second connector; 264; Jaw drive assembly; 3; Sleeve; 30; Limiting member; 31; Receiving space; 311; Slide groove; 312; First push member; 32; First helical tooth; 321; First columnar part; 322; Cavity; 3221; Rod-shaped part; 323; Second free end, 3231; Second pusher, 33; Slider, 331; Second helical tooth, 332; Receiving groove, 333; Second columnar part, 334; Top block, 34; Through hole, 341; Rotating shaft, 342; Cutting blade drive assembly, 4; Rack, 41; Sixth tooth, 411; Mandrel, 42; Housing, 5; Receiving cavity, 51; Second assembly hole, 52; Second groove, 53; Third groove, 54; Receiving hole, 55; Groove, 56; Elastic element, 6; Abutting element, 7; Second hole, 71; First free end, 73; Abutting element, 81; Base, 811; First groove, 8111; Ear, 812; First assembly hole, 8121; Second elastic device, 82; Assembly part, 821; Third assembly hole, 8211; First abutting part, 822; Second abutting part, 823; First limiting shaft, 83; Third elastic device, 84; Fixing element, 9; Protruding rib, 91. Detailed Implementation

[0045] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0046] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0047] See Figures 1 to 3 The stapler 300 of this application includes a stapler body 100 and jaws 200 and / or a cutting blade (not shown) connected to the stapler body 100. The stapler body 100 includes a power unit 1, a transmission mechanism 2, a jaw drive assembly 3, and a cutting blade drive assembly 4.

[0048] The power unit 1 provides a power source, which drives the jaw drive assembly 3 to switch the jaws 200 between a closed state and an open state via the transmission mechanism 2. In the closed state, the jaws 200 are closed to clamp tissue; in the open state, the jaws 200 are open to release tissue.

[0049] The power unit 1 provides a power source, which drives the cutting blade drive assembly 4 to fire and retract the cutting blade via the transmission mechanism 2. When the cutting blade is fired, it advances to cut and suture tissue.

[0050] In some embodiments, the transmission mechanism 2 includes a first gear 21, a second gear 22, a third gear 23, a fourth gear 24, and a fifth gear 25.

[0051] In some embodiments, the first gear 21 rotates to move the jaw drive assembly 3, which in turn moves the jaws 200 between a closed and an open state; the first gear 21 rotates the second gear 22; the second gear 22 moves the cutting blade drive assembly 4, which in turn moves the cutting blade to fire and retract; the third gear 23 rotates the first gear 21; the fifth gear 25 rotates the third gear 23 and the fourth gear 24; the fifth gear 25 is connected to the shaft (not shown) of the power unit 1; and the shaft rotates the fifth gear 25.

[0052] In some embodiments, the cutting blade drive assembly 4 includes a rack 41, and the second gear 22 carries the rack 41 forward and backward.

[0053] In this manual, "forward" refers to moving the stapler body 100 forward; "backward" refers to moving the stapler body 100 backward.

[0054] In some embodiments, the first tooth 211 of the first gear 21 meshes with the second tooth 221 of the second gear 22, the third tooth 231 of the third gear 23 meshes with the first tooth 211 of the first gear 21, the fourth tooth 241 of the fourth gear 24 meshes with the fifth tooth 251 of the fifth gear 25, the fourth gear 24 and the third gear 23 are connected by the connector 26, and the third gear 23 is located above the fourth gear 24 along the height direction of the anastomosis device body 100; the second tooth 221 of the second gear 22 meshes with the sixth tooth 411 of the rack 41.

[0055] In some embodiments, the fourth tooth 241 may be connected vertically to the third tooth 231 as a single unit, that is, the third gear 23 and the fourth gear 24 are combined into one.

[0056] In some embodiments, the fourth gear 24 and the fifth gear 25 may be omitted, and the third gear 23 may be fixed on the shaft of the power unit 1.

[0057] In some embodiments, the third gear 23, the fourth gear 24 and the fifth gear 25 may be omitted, and the first gear 21 is fixed on the shaft of the power unit 1.

[0058] In some embodiments, along the height direction of the stapler body 100, the top end of the second tooth 221 engages with the first tooth 211, and the bottom end of the second tooth 221 engages with the sixth tooth 411. In some embodiments, the top and bottom ends of the second tooth 221 can be directly connected, or they can be connected through a toothless connecting portion.

[0059] In some embodiments, the first gear 21 is provided with a toothless portion 212. Along the circumferential direction of the first gear 21, the toothless portion 212 is located between two first teeth 211. During the rotation of the first gear 21, when the first teeth 211 mesh with the second teeth 221, the first gear 21 drives the second gear 22 to rotate. When the toothless portion 212 engages with the second teeth 221, the first gear 21 cannot drive the second gear 22 to rotate, and the second gear 22 does not rotate.

[0060] In some embodiments, a portion of the first tooth 211 is lower in height, and along the circumferential direction of the first gear 21, the lower-height first tooth 211 is located between the two higher-height first teeth 211, and the toothless portion 212 is located between the two higher-height first teeth 211, and along the height direction of the anastomosis device body 100, the toothless portion 212 is located below the lower-height first tooth 211.

[0061] See Figure 1 As shown, in some embodiments, the jaw drive assembly 3 includes a sleeve 30, which moves forward and backward. The sleeve 30 is connected to the jaws 200 to realize the closing and opening of the jaws 200.

[0062] In some embodiments, the cutting blade drive assembly 4 includes a spindle 42 that connects the rack 41 to the cutting blade. The rack 41 carries the spindle 42 forward and backward, and the spindle 42 carries the cutting blade to fire and retract.

[0063] In some embodiments, the mandrel 42 is located inside the sleeve 30.

[0064] In some embodiments, the closing and opening of the jaws 200 can also be achieved by the forward and backward movement of the second rack (not shown).

[0065] See Figures 2 to 7 In some embodiments, the jaw drive assembly 3 includes a limiting member 31, a first pushing member 32, and a second pushing member 33. The limiting member 31 is provided with a receiving space 311 and a plurality of sliding grooves 312 arranged along the circumferential direction of the receiving space 311 and communicating with the receiving space 311.

[0066] In some embodiments, the first pusher 32 includes a plurality of first helical teeth 321. The second pusher 33 includes a plurality of sliders 331 and a plurality of second helical teeth 332 that engage with the plurality of first helical teeth 321.

[0067] In some embodiments, the first pushing member 32 includes a first columnar portion 322 and a rod-shaped portion 323 connected to the first columnar portion 322. The first helical tooth 321 is disposed at the free end of the first columnar portion 322.

[0068] In some embodiments, the second pusher 33 includes a second columnar portion 334, and the second helical tooth 332 and the slider 331 are disposed on the second columnar portion 334.

[0069] In some embodiments, the first columnar portion 322 forms a cavity 3221, and the free end of the second columnar portion 334 is assembled in the cavity 3221 to prevent the second pusher 33 from disengaging from the first pusher 32 and to ensure that the first pusher 32 and the second pusher 33 smoothly abut against each other.

[0070] See Figures 8 to 9In the open state, at least a portion of the second pusher 33 is located within the receiving space 311, and the slider 331 is located within the groove 312. See also: Figures 10 to 11 The first pushing member 32 is forced against the second pushing member 33. After the slider 331 moves along the slide groove 312 and moves out of the slide groove 312, see [link to previous section]. Figures 12 to 14 The second pusher 33 rotates so that the slider 331 deviates from the groove 312, and the second pusher 33 abuts against the limiting member 31 so that the jaws 200 switch and lock in the closed state.

[0071] See Figures 12 to 14 In the closed state, the first pusher 32 is forced to push against the second pusher 33. Figures 10 to 11 In the open state, the second pusher 33 rotates, causing the slider 331 to enter the groove 312, and the jaws 200 switch to the open state. Figures 8 to 9 The state.

[0072] The stapler body 100 of this application, through the setting of the limiting member 31, the first pushing member 32 and the second pushing member 33, the first pushing member 32 abuts against the second pushing member 33 to make it move forward and backward. When the second pushing member 33 moves forward and abuts against the limiting member 31, the jaws 200 can be locked in a closed state. There is no need to set a complex locking structure. The stapler body has a simple structure and good reliability, which can prevent the jaws 200 from opening accidentally.

[0073] See Figures 4 to 5 and Figure 8 The anastomosis device body 100 includes a housing 5, and the transmission mechanism 2 is rotatably disposed on the housing 5.

[0074] In some embodiments, the transmission mechanism 2 is located within the space enclosed by the housing 5.

[0075] In some embodiments, the anastomosis device body 100 includes a first shaft portion 210, a second shaft portion 220, and a third shaft portion 230 fixed to the housing 5. The first gear 21 is rotatably mounted on the first shaft portion 210, the second gear 22 is rotatably mounted on the second shaft portion 220, and the connector 26 is rotatably mounted on the third shaft portion 230.

[0076] See Figures 4 to 5In some embodiments, the limiting member 31 is part of the housing 5, which encloses the receiving space 311 and is provided with the sliding groove 312. The anastomosis device body 100 not only has a simple structure and reduces the number of parts, but also omits the step of assembling the limiting member 31. Optionally, the limiting member 31 can also be assembled and fixed with the housing 5.

[0077] The jaw drive assembly 3 includes a top block 34, the sleeve 30 is fixed to the top block 34, and the second pusher 33 is rotatably connected to the top block 34 and can abut against the top block 34 to make it move forward and backward.

[0078] In some embodiments, the top block 34 is provided with a through hole 341 for the mandrel 42 to pass through.

[0079] In some embodiments, the housing 5 is further provided with a receiving cavity 51, and the top block 34 clamps within the receiving cavity 51 and is movable along the receiving cavity 51.

[0080] In some embodiments, the stapler body 100 includes an elastic element 6, which is compressed when the second pusher 33 is removed from the receiving space 311, and the elastic force of the elastic element 6 causes the second pusher 33 to enter the receiving space 311.

[0081] In some embodiments, the elastic member 6 is located within the receiving cavity 51, and the opposite ends of the elastic member 6 abut against the top block 34 and the housing 5, respectively. When the first pusher 32 abuts against the second pusher 33, the top block 34 advances along the receiving cavity 51 and squeezes the elastic member 6, and the elastic member 6 provides a pushing force for the top block 34 to retract.

[0082] In some embodiments, the elastic element 6 may be a spring or other elastic body.

[0083] See Figure 9 In some embodiments, the top block 34 is provided with a rotating shaft 342, and the second pusher 33 is provided with a receiving groove 333. The rotating shaft 342 is received in the receiving groove 333 to limit the second pusher 33 and prevent it from falling off.

[0084] See Figure 3 and Figure 15 In some embodiments, the anastomosis device body 100 includes a stop member 7, which can switch between a stop position and a non-stop position. In the stop position, the stop member 7 abuts against the first push member 32 to allow the second push member 33 to move. In the non-stop position, the stop member 7 disengages from abutting against the first push member 32.

[0085] In some embodiments, the power unit 1 drives the abutting member 7 to switch between the abutting position and the non-abutting position.

[0086] In some embodiments, the first gear 21 rotates the abutting member 7 to switch between the abutting position and the non-abutting position.

[0087] In some embodiments, the first gear 21 may be omitted, and the abutment 7 and the second gear 22 may be driven by different power sources.

[0088] In some embodiments, the abutting member 7 is integrally formed with the first gear 21, resulting in a simpler structure; alternatively, the abutting member 7 and the first gear 21 can also be separately formed.

[0089] In some embodiments, the first gear 21 is provided with a first hole 213, and the abutment 7 is provided with a second hole 71. The first hole 213 and the second hole 71 are aligned so that the first shaft portion 210 passes through, thereby enabling the first gear 21 and the abutment 7 to rotate relative to the housing 5.

[0090] In some embodiments, the first free end 73 of the abutment 7 and the second free end 3231 of the first pusher 32 are both arc-shaped to ensure that the abutment 7 can abut against the first pusher 32 during rotation, so as to make it move forward.

[0091] See Figures 8 to 15 In the initial state, the jaws 200 of the anastomosis device 300 of this application are in an open state. At this time, the power device 1 is activated, and the power device 1 rotates clockwise in a first direction to drive the fifth gear 25 to rotate. The fifth gear 25 drives the fourth gear 24 and the third gear 23 to rotate, and the third gear 23 drives the first gear 21 to rotate until the abutment 7 abuts against the first pusher 32.

[0092] During this process, the second tooth 221 of the second gear 22 engages with the toothless part 212 of the first gear 21, and the second gear 22 does not rotate, that is, the cutting blade stops moving.

[0093] When the abutting member 7 abuts against the first pushing member 32, the first pushing member 32 abuts against the second pushing member 33. After the slider 331 moves along the slide groove 312 and moves out of the slide groove 312, the second pushing member 33 rotates, causing the slider 331 to deviate from the slide groove 312 and abut against the limiting member 31, so that the jaws 200 are locked in the closed state. At this time, as the first gear 21 continues to rotate, the first tooth 211 meshes with the second tooth 221, the first gear 21 drives the second gear 22 to rotate, the second gear 22 drives the rack 41 forward, and the cutting blade fires.

[0094] After firing, the power unit 1 reverses in a second direction opposite to the first direction. During this process, the first gear 21 rotates along the second gear 22 to retract the cutting blade. After the cutting blade retracts, the toothless part 212 of the first gear 21 engages with the second gear 22. As the first gear 21 continues to rotate, the second gear 22 does not rotate. When the first gear 21 rotates to the point where the abutment 7 abuts against the first pusher 32, the first pusher 32 abuts against the second pusher 33. The second pusher 33 rotates so that the slider 331 enters the groove 312, and the jaws 200 switch to the open state, that is, the stapler 300 returns to its initial state.

[0095] exist Figure 8 In this application, the first direction is counterclockwise and the second direction is clockwise. This application does not limit the first direction.

[0096] See Figures 16 to 24 The stapler body 100 can switch between electric and manual modes. When the electric mode of the stapler body 100 fails, the opening of the jaws 200 and the retraction of the cutting blade can still be controlled in manual mode, thereby further improving the safety of the stapler body 100 and avoiding medical accidents.

[0097] In the electric mode, the fourth tooth 241 of the fourth gear 24 meshes with the fifth tooth 251 of the fifth gear 25. In the manual mode, the fourth tooth 241 of the fourth gear 24 disengages from the fifth tooth 251 of the fifth gear 25. An external operating component can be assembled on the connecting member 26. By manually operating the external operating component, the external operating component rotates the third gear 23, which in turn rotates the first gear 21, thereby enabling the anastomosis device body 100 to operate.

[0098] In some implementations, when the electric motor fails, pressing down on the connector 26 switches to the manual mode, and the fourth gear 24 moves downward to disengage from the fifth gear 25.

[0099] In some embodiments, the stapler body 100 further includes a stop 81, which, in the manual mode, is positioned above the connector 26 to prevent it from moving upward, ensuring that the stapler body 100 remains in the manual mode.

[0100] The stop member 81 is movable between a first position and a second position. In the first position, the stop member 81 is located above the connector 26, and the stapler body 100 is in manual mode; in the second position, the stop member 81 is located to one side of the connector 26, and the stapler body 100 is in electric mode.

[0101] In some embodiments, the anastomosis device body 100 further includes a second elastic device 82, which abuts against the stop member 81 at one end and against the housing 5 at the other end, to ensure that the stop member 81 remains in the first position.

[0102] When the stopper 81 moves away from above the connector 26 to the second position, the stopper 81 presses against the second elastic device 82. When the connector 26 is pressed down to the first position, the elastic force of the second elastic device 82 abuts against the stopper 81, causing it to move above the connector 26.

[0103] In some embodiments, the second elastic device 82 may be a torsion spring or other elastic body.

[0104] In some embodiments, the abutment 81 is rotatably connected to the housing 5. The abutment 81 has a base 811 and a pair of ears 812 extending from the base 811. The pair of ears 812 are respectively provided with first assembly holes 8121. The housing 5 is provided with a second assembly hole 52. The anastomosis device body 100 also includes a first limiting shaft 83, which passes through the first assembly hole 8121 and is assembled in the second assembly hole 52 to realize the rotation of the abutment 81.

[0105] The second elastic device 82 includes an assembly portion 821 and a first abutment portion 822 and a second abutment portion 823 disposed on the assembly portion 821. The assembly portion 821 has a third assembly hole 8211 for the first limiting shaft 83 to pass through. The assembly portion 821 is located between the pair of ears 812, the first abutment portion 822 abuts against the base portion 811, and the second abutment portion 823 abuts against the housing 5.

[0106] In some embodiments, the base 811 is provided with a first groove 8111, the housing 5 is provided with a second groove 53, the first abutment 822 is located in the first groove 8111 to prevent the first abutment 822 from displacing and to ensure that the first abutment 822 abuts against the base 811; the second abutment 823 is located in the second groove 53 to prevent the second abutment 823 from displacing and to ensure that the second abutment 823 abuts against the housing 5.

[0107] In some embodiments, the housing 5 is provided with a third groove 54, and when the abutment 81 is located above the connector 26, the free end 8112 of the base 811 is located in the third groove 54 to ensure that the abutment 81 remains above the connector 26.

[0108] See Figures 16 to 17 In some embodiments, the stapler body 100 further includes a third elastic device 84. When the connector 26 moves downward, it compresses the third elastic device 84, and the pushing force of the third elastic device 84 pushes the connector 26 upward, causing it to move upward.

[0109] When the connector 26 is pressed downwards, it compresses the third elastic device 84. When the stopper 81 moves away from above the connector 26, the elastic force of the third elastic device 84 pushes upwards against the connector 26, causing the fourth tooth 241 of the fourth gear 24 to mesh with the fifth tooth 251 of the fifth gear 25, and the stapler 300 returns to the electric mode. The third elastic device 84 ensures that the stapler 300 remains in the electric mode, ensuring the normal operation of the stapler 300.

[0110] In some embodiments, the third elastic device 84 may be a spring or other elastic body.

[0111] The top end of the connector 26 is available for assembling an external operating component to rotate the connector 26 and the third gear 23. See also Figures 23 to 24 In some embodiments, the connector 26 is provided with an operating hole 261 for the end of the external operating member to be inserted to rotate the connector 26. Optionally, the top end of the connector 26 may also be assembled into the hole of the external operating member.

[0112] In some embodiments, the shape of the operating hole 261 matches the shape of the end of the operating member, both being irregularly shaped, to ensure that the external operating member can rotate with the connecting member 26.

[0113] See Figures 22 to 24 In some embodiments, the stapler body 100 includes a fixing member 9 sleeved on the connector 26, and the connector 26 is rotatable relative to the fixing member 9. When the abutment 81 is in the second position, the abutment 81 abuts against the fixing member 9.

[0114] In some embodiments, the fastener 9 includes a rib 91. The housing 5 has a receiving hole 55 and a groove 56 communicating with the receiving hole 55. The fastener 9 is received in the receiving hole 55, and the rib 91 is received in the groove 56 and is movable along the groove 56. The rib 91 prevents the fastener 9 from rotating when the connector 26 is pressed down, and at the same time provides guidance for the vertical movement of the connector 26.

[0115] In some embodiments, the top end of the connector 26 is provided with a shoulder 262. The fixing member 9 is located between the shoulder 262 and the fourth gear 24. The shoulder 262 prevents the fixing member 9 from detaching upward from the connector 26.

[0116] In some embodiments, the connector 26 includes a first connector 263 and a second connector 264 fixed together, the third gear 23 and the fourth gear 24 are integrally formed with the first connector 263, and the shoulder 262 is disposed on the second connector 264 to facilitate the assembly of the fastener 9.

[0117] In some embodiments, the third elastic device 84 is arranged around the periphery of the third shaft portion 230.

[0118] In some embodiments, the fourth gear 24 is provided with a recess 242, and the top end of the third elastic device 84 is received in the recess 242 to increase the stability of the third elastic device 84.

[0119] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An anastomosis device body, characterized by, The application relates to an anastomat, which comprises: a jaw driving assembly for driving a jaw connected with a body of the anastomat to switch between a closed state and an open state, the jaw driving assembly comprising a limiting piece, a first pushing piece and a second pushing piece, the limiting piece being provided with a receiving space and a plurality of sliding grooves arranged along a circumferential direction of the receiving space and communicated with the receiving space, the second pushing piece comprising a plurality of sliding blocks arranged along a circumferential direction of the second pushing piece in sequence; in the open state, at least part of the second pushing piece is located in the receiving space, and the sliding blocks are located in the sliding grooves, in this state, the first pushing piece is forced to abut against the second pushing piece, after the sliding blocks are moved along the sliding grooves and moved out of the sliding grooves, the second pushing piece rotates and abuts against the limiting piece, so that the jaw is switched and locked in the closed state; in the closed state, the first pushing piece is forced to abut against the second pushing piece, and the second pushing piece rotates, so that the sliding blocks enter the sliding grooves, and the jaw is switched to the open state; the first pushing piece comprises a plurality of first inclined teeth, the second pushing piece comprises a plurality of second inclined teeth, and when the first pushing piece abuts against the second pushing piece, the first inclined teeth abut against the second inclined teeth; the first pushing piece comprises a first columnar part and a rod-shaped part connected with the first columnar part, the first inclined teeth are arranged at a free end of the first columnar part, the first columnar part surrounds a cavity, the second pushing piece comprises a second columnar part, the second inclined teeth and the sliding blocks are arranged on the second columnar part, and a free end of the second columnar part is assembled in the cavity.

2. The stapler cartridge of claim 1, wherein: the jaw driving assembly comprises an elastic piece, when the second pushing piece moves out of the receiving space, the elastic piece is compressed, and the elastic force of the elastic piece enables the second pushing piece to enter the receiving space.

3. The stapler cartridge of claim 2, wherein: the jaw driving assembly comprises a top block, the second pushing piece is rotationally connected with the top block and advances with the top block, and the top block is compressed when moving.

4. The stapler cartridge of claim 3, wherein: the body of the anastomat comprises a shell, the shell is provided with a receiving cavity, the top block and the elastic piece are located in the receiving cavity, the top block can advance and retreat along the receiving cavity, and opposite ends of the elastic piece abut against the shell and the top block respectively.

5. The stapler cartridge of claim 4, wherein: the receiving space and the sliding grooves are arranged on the shell.

6. The stapler cartridge of claim 3, wherein: the jaw driving assembly comprises a sleeve fixed with the top block, the sleeve is connected with the jaw, and the top block advances and retreats with the sleeve.

7. The stapler cartridge of any of claims 1 to 6, wherein the cartridge body comprises a plurality of staple cavities arranged in a plurality of rows, each row comprising a plurality of staple cavities. the body of the anastomat comprises an abutting piece, the abutting piece can switch between an abutting position and a non-abutting position, in the abutting position, the abutting piece abuts against the first pushing piece, so that the first pushing piece abuts against the second pushing piece, and in the non-abutting position, the abutting piece is separated from the abutting against the first pushing piece.

8. The stapler cartridge of claim 7, wherein: the body of the anastomat comprises a power device, the power device drives the abutting piece to rotate between the abutting position and the non-abutting position.

9. The stapler cartridge of claim 8, wherein: The anastomat body comprises a transmission mechanism, the transmission mechanism comprises a first gear, the power device drives the first gear to rotate, and the first gear rotates with the abutting member.

10. The stapler cartridge of claim 9, wherein: The anastomat body comprises a cutting knife driving assembly, the cutting knife driving assembly comprises a rack, the transmission mechanism comprises a second gear, the first gear comprises a plurality of first teeth and a toothless part, when the abutting member abuts against the first push member, the second gear is located at the toothless part, when the jaw is in the closed state, the first gear rotates with the second gear, and the second gear drives the rack to advance and retreat, so as to drive the cutting knife connected with the anastomat body to fire and retreat.

11. The stapler cartridge of claim 10, wherein: In the open state, the power device rotates in a first direction, the second gear does not rotate, when the abutting member abuts against the first push member, the jaw switches from the open state to the closed state, and when the power device continues to rotate in the first direction, the first gear rotates with the second gear; In the closed state, the power device reverses in a second direction opposite to the first direction, the first gear rotates with the second gear, when the abutting member abuts against the first push member, the jaw switches from the closed state to the open state.

12. An anastomat characterized by comprising: The anastomat body comprises a transmission mechanism, the transmission mechanism comprises a first gear, the power device drives the first gear to rotate, and the first gear rotates with the abutting member.

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