Anastomat body and anastomat
Through the coordination of the pin and the counter-top member, the closed and open state switching of the electric stapler jaw is achieved, solving the complex structure problems in the prior art and improving the simplicity and reliability of the equipment.
Patent Information
- Application Number
- CN202411503843.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2024-12-17
AI Technical Summary
The existing electric stapler has a complex structure and requires a complex locking structure to achieve the closing and open state switching of the jaws, which affects the simplicity and reliability of the equipment.
Using jaw drive assembly including a pin and a counter-top member, the jaws are switched between the closed and open states through the movement of the pin and the rotation of the pin and the rotation of the pin, thus eliminating the complex locking structure and making the structure simpler. .
The jaws are switched smoothly between closed and open states, without the need for complex locking structures, improving the structural simplicity and reliability of the stapler and reducing operational complexity.
Smart Images
Figure CN119138957A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of medical devices, and in particular to a stapler body and a stapler. Background Art
[0002] With the continuous development of medical device technology, electric staplers are gradually replacing traditional manual suturing or conventional staplers. Electric staplers use electric drive systems and automated control technology to quickly and accurately connect and seal tissues during surgery, significantly reducing operation time and surgical trauma, reducing the risk of tissue damage, bleeding and infection, and promoting patient recovery and healing. Secondly, electric staplers can provide consistent anastomosis force and pressure, which is not affected by changes in manual operation, reducing the technical requirements of the operator.
[0003] In the related art, since the electric stapler needs to move selectively with components such as the jaws and the cutting knife, a locking structure is also provided to keep the jaws in a closed state, resulting in a complex structure of the electric stapler. Summary of the invention
[0004] The present application provides a stapler body and a stapler with a simple structure.
[0005] The present application provides a stapler body, comprising: a jaw drive assembly, a push rod and a power device, wherein the jaw drive assembly comprises a push rod, and the push rod moves to switch the jaws connected to the stapler body between a closed state and an open state, the push rod comprises an outwardly convex first arc portion and an inwardly concave second arc portion, the first arc portion extends a first length along the circumferential direction of the push rod, the second arc portion is connected to the first arc portion and extends a second length along the circumferential direction of the push rod, the push rod can switch between a push state and a non-pushing state, in the push state, the first arc portion abuts against the end of the push rod so that the jaws are switched to the closed state, in the non-pushing state, the end of the push rod is located in a recessed groove surrounded by the second arc portion so that the jaws are switched to the open state, and the power device can drive the push rod to rotate so that the push rod switches between the push state and the non-pushing state.
[0006] Furthermore, the push rod includes a rod body and a rolling member rotatably connected to the rod body. In the abutting state, the rolling member abuts against the first arc-shaped portion. When the abutting member rotates, the rolling member rolls along the first arc-shaped portion.
[0007] Furthermore, the rod body includes a first ear portion and a second ear portion that are arranged opposite to each other, the rolling element is located between the first ear portion and the second ear portion, and the rolling element is axially connected to the first ear portion and the second ear portion.
[0008] Furthermore, the stapler body includes a transmission mechanism, and the transmission mechanism includes a first gear. The power device drives the first gear to rotate, and the first gear rotates with the abutting member.
[0009] Furthermore, the push piece is fixed to the first gear, the diameter of the first gear is larger than the diameter of the push piece, the first gear includes a convex edge extending outward from the bottom end of the push piece, the convex edge is located below the push rod, and the shape of the outer contour of the circumferential direction of the convex edge is the same as the shape of the outer contour of the circumferential direction of the push piece.
[0010] Furthermore, the first gear includes a plurality of first tooth portions and a toothless portion, the stapler body includes a cutting knife driving assembly, the cutting knife driving assembly includes a rack, and the transmission mechanism includes a second gear. In the non-affecting state, the second tooth portion of the second gear is located at the toothless portion, and in the abutting state, the first gear drives the second gear to rotate and the second gear drives the rack forward and backward to fire and retract the cutting knife connected to the stapler body.
[0011] Further, in the open state, the power device rotates forward in a first direction, the first gear rotates, and the second gear does not rotate. When the first gear rotates with the abutting piece to the abutting state, 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 rotates with the second gear to complete the firing of the cutting knife. When the cutting knife completes firing, the power device reverses in a second direction opposite to the first direction, the first gear rotates with the second gear, and the cutting knife completes retraction. When the cutting knife completes retraction, when the first gear rotates with the abutting piece to the non-rebutting state, the jaws switch from the closed state to the open state.
[0012] Furthermore, the stapler body includes a top block and a sleeve fixed to the top block, the sleeve is connected to the jaws, the top block moves the sleeve forward and backward, and the push rod is connected to the top block.
[0013] Furthermore, the stapler body includes a shell, the shell is provided with a receiving cavity, the top block is located in the receiving cavity, the top block can move forward and backward along the receiving cavity, the stapler body includes an elastic member, the opposite ends of the elastic member are respectively abutted against the shell and the top block, the top block squeezes the elastic member when moving forward, and the elastic force of the elastic member causes the top block to move backward.
[0014] The embodiment of the present application also provides a stapler, comprising jaws and / or a cutting knife and the above-mentioned stapler body.
[0015] Compared with the prior art, the anastomosis device body of the present application includes a push piece and a push rod. The movement of the push rod causes the jaws to switch between an open state and a closed state. The push piece includes a first convex arc portion and a second concave arc portion. During the rotation of the push piece, the push piece drives the push rod forward or backward. The jaws can be switched between an open state and a closed state through the cooperation between the push piece and the push rod. There is no need to set up a complicated locking structure, and the structure is simpler. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic diagram of a stapler according to an embodiment of the present application;
[0017] Figure 2 yes Figure 1 A schematic diagram of a stapler body is shown, wherein only a portion of the components of the stapler body are shown;
[0018] Figure 3 yes Figure 2 A schematic diagram of another viewing angle of the stapler body shown;
[0019] Figure 4 yes Figure 1 A schematic diagram of the connection between the stapler's ejector rod, ejector block, sleeve, rack and mandrel is shown, wherein only a portion of the sleeve and mandrel is shown;
[0020] Figure 5 yes Figure 2 A schematic diagram of the first gear of the stapler body shown;
[0021] Figure 6 yes Figure 1 A schematic diagram of a stapler body of the stapler shown, wherein the abutment member is in a non-abutment state;
[0022] Figure 7 yes Figure 6 A schematic cross-sectional view of the stapler body along line X1-X1 is shown;
[0023] Figure 8 yes Figure 1 A schematic diagram of a stapler body of the stapler shown, wherein the abutting member is in an abutting state;
[0024] Fig. 9 yes Figure 8 A schematic cross-sectional view of the stapler body along line X2-X2 shown;
[0025] Fig.10 yes Figure 2 A schematic diagram of the ejector rod of the stapler body shown;
[0026] Fig.11 yes Figure 2 A schematic diagram of the push member and the push rod when they push against each other;
[0027] Fig.12 yes Figure 8 A schematic diagram of the top block of the stapler body shown;
[0028] Fig.13 yes Figure 1 A schematic diagram of a stapler body is shown, wherein the stapler is in electric mode;
[0029] Fig.14 yes Fig.13 An enlarged view of the prescription frame portion A of the stapler body shown;
[0030] Fig.15 yes Figure 1 A schematic diagram of a stapler body is shown, wherein the stapler is in manual mode;
[0031] Fig.16 yes Fig.15 An enlarged view of the B prescription frame portion of the stapler body shown;
[0032] Fig.17 yes Fig.16 A schematic diagram of the stopper, the first elastic device and the first limiting axis of the stapler body shown;
[0033] Fig.18 yes Figure 1 A schematic diagram of the housing shown;
[0034] Fig.19 yes Fig.16 A schematic diagram of the connection between the connecting member, the third gear and the fourth gear shown;
[0035] Fig. 20 yes Fig.19 The schematic diagram shown is a schematic diagram after being cut away.
[0036] Description of the accompanying drawings: stapler, 300; stapler body, 100; jaws, 200; power device, 1; abutment member, 2; first arc-shaped portion, 21; second arc-shaped portion, 22; recessed groove, 220; second hole, 23; transmission mechanism, 3; first gear, 31; first shaft portion, 310; first tooth portion, 311; toothless portion, 312; convex edge, 313; second gear, 32; second shaft portion, 320; second tooth portion part, 321; third gear, 33; third shaft, 330; third tooth, 331; fourth gear, 34; fourth tooth, 341; recess, 342; fifth gear, 35; fifth tooth, 351; connecting member, 36; operating hole, 361; shoulder, 362; first connecting member, 363; second connecting member, 364; jaw drive assembly, 4; push rod, 40; rod body, 401; first ear, 4011 ; second ear, 4012; protrusion, 4013; rolling element, 402; sleeve, 41; top block, 42; groove, 420; through hole, 421; cutting knife drive assembly, 5; rack, 51; sixth tooth, 511; spindle, 52; shell, 6; receiving cavity, 61; second assembly hole, 62; second groove, 63; first limiting portion, 64; first limiting hole, 641; second limiting portion, 65; second limiting Hole, 651; receiving hole, 66; slide groove, 67; elastic member, 7; stop member, 81; base, 811; first groove portion, 8111; ear portion, 812; first assembly hole, 8121; first elastic device, 82; assembly portion, 821; third assembly hole, 8211; first stop portion, 822; second stop portion, 823; first limiting shaft, 83; second elastic device, 84; fixing member, 9; convex rib, 91. DETAILED DESCRIPTION
[0037] Here, the technical solutions in the embodiments (or "implementations") of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0038] If there are terms involving directional indications or positional relationships in the embodiments of the present application (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 relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance.
[0039] Ginseng Figures 1 to 3The stapler 300 of the embodiment of the present application includes a stapler body 100 and a jaw 200 and / or a cutting knife (not shown) connected to the stapler body 100. The stapler body 100 includes a power device 1, a push member 2, a transmission mechanism 3, a jaw drive assembly 4, a cutting knife drive assembly 5 and a housing 6.
[0040] In some embodiments, the power device 1 provides a power source, and drives the abutment member 2 to rotate through the transmission mechanism 3, so that the jaw drive assembly 4 switches the jaw 200 between a closed state and an open state. In the closed state, the jaw 200 is closed to clamp the tissue; in the open state, the jaw 200 is opened to loosen the tissue.
[0041] In some embodiments, the power device 1 can directly drive the abutting member 2 to rotate.
[0042] In some embodiments, the power device 1 provides a power source, and drives the cutting knife driving assembly 5 to fire and retract the cutting knife through the transmission mechanism 3. When the cutting knife is fired, the cutting knife moves forward to cut and suture tissue.
[0043] In some embodiments, the transmission mechanism 3 includes a first gear 31 , a second gear 32 , a third gear 33 , a fourth gear 34 and a fifth gear 35 .
[0044] In some embodiments, the first gear 31 rotates to rotate with the support member 2 to drive the jaw drive assembly 4 to move, and the jaw drive assembly 4 switches the jaw 200 between a closed state and an open state; the first gear 31 rotates with the second gear 32; the second gear 32 moves with the cutting knife drive assembly 5, and the cutting knife drive assembly 5 drives the cutting knife to fire and retract; the third gear 33 rotates with the first gear 31; the fifth gear 35 rotates with the third gear 33 and the fourth gear 34; the fifth gear 35 is connected to the rotating shaft (not shown) of the power device 1; the rotating shaft rotates the fifth gear 35.
[0045] In some embodiments, the cutting blade driving assembly 5 includes a rack 51, and the second gear 32 drives the rack 51 forward and backward.
[0046] The forward movement in this specification refers to the movement toward the front of the stapler body 100 ; the backward movement in this specification refers to the movement toward the rear of the stapler body 100 .
[0047] In some embodiments, the first tooth portion 311 of the first gear 31 meshes with the second tooth portion 321 of the second gear 32, the third tooth portion 331 of the third gear 33 meshes with the first tooth portion 311 of the first gear 31, the fourth tooth portion 341 of the fourth gear 34 meshes with the fifth tooth portion 351 of the fifth gear 35, the fourth gear 34 is connected to the third gear 33 via a connector 36, and along the height direction of the stapler body 100, the third gear 33 is located above the fourth gear 34; the second tooth portion 321 of the second gear 32 meshes with the sixth tooth portion 511 of the rack 51.
[0048] In some embodiments, the fourth gear portion 341 may be connected to the third gear portion 331 in an integral manner, that is, the third gear 33 and the fourth gear 34 are combined into one.
[0049] In some embodiments, the fourth gear 34 and the fifth gear 35 may be eliminated, and the third gear 33 may be fixed on the rotating shaft of the power device 1 .
[0050] In some embodiments, the third gear 33 , the fourth gear 34 , and the fifth gear 35 may be eliminated, and the first gear 31 is fixed on the rotating shaft of the power device 1 .
[0051] In some embodiments, along the height direction of the stapler body 100, the top end of the second tooth portion 321 is meshed with the first tooth portion 311, and the bottom end of the second tooth portion 321 is meshed with the sixth tooth portion 511. In some embodiments, the top end and the bottom end of the second tooth portion 321 may be directly connected or connected via a toothless connection portion.
[0052] In some embodiments, the first gear 31 is provided with a toothless portion 312, and along the circumferential direction of the first gear 31, the toothless portion 312 is located between the two first tooth portions 311, and during the rotation of the first gear 31, when the first tooth portion 311 is meshed with the second tooth portion 321, the first gear 31 rotates with the second gear 32, and when the toothless portion 312 cooperates with the second tooth portion 321, the first gear 31 cannot rotate with the second gear 32, and the second gear 32 does not rotate.
[0053] In some embodiments, the height of some of the first tooth portions 311 is relatively low. Along the circumferential direction of the first gear 31, the first tooth portion 311 with a relatively low height is located between two first tooth portions 311 with relatively high heights, and the toothless portion 312 is located between the two first tooth portions 311 with relatively high heights. Along the height direction of the stapler body 100, the toothless portion 312 is located below the first tooth portion 311 with a relatively low height.
[0054] In some embodiments, the transmission mechanism 3 is rotatably disposed on the housing 6 .
[0055] In some embodiments, the transmission mechanism 3 is located in the space enclosed by the shell 6 .
[0056] In some embodiments, the stapler body 100 includes a first shaft portion 310, a second shaft portion 320, and a third shaft portion 330 fixed to the housing 6. The first gear 31 is rotatably assembled on the first shaft portion 310, the second gear 32 is rotatably assembled on the second shaft portion 320, and the connecting member 36 is rotatably assembled on the third shaft portion 330.
[0057] Ginseng Figure 1 and Figure 4 In some embodiments, the jaw drive assembly 4 includes a push rod 40, the push member 2 rotates to move the push rod 40, and the push rod 40 moves to switch the jaw 200 between a closed state and an open state.
[0058] In some embodiments, the jaw drive assembly 4 includes a sleeve 41 , which is connected to the jaw 200 , and the push rod 40 moves to carry the sleeve 41 forward and backward to achieve closing and opening of the jaw 200 .
[0059] In some embodiments, the cutting knife driving assembly 5 includes a core shaft 52, and the core shaft 52 connects the rack 51 and the cutting knife. The rack 51 drives the core shaft 52 forward and backward, and the core shaft 52 drives the cutting knife to fire and retreat.
[0060] In some embodiments, the mandrel 52 is located within the sleeve 41 .
[0061] Ginseng Figures 5 to 9 The abutting member 2 includes a first convex arc portion 21 and a second concave arc portion 22. The first arc portion 21 extends along the circumferential direction of the abutting member 2 by a first length, and the second arc portion 22 is connected to the first arc portion 21 and extends along the circumferential direction of the abutting member 2 by a second length.
[0062] The abutting member 2 can be switched between an abutting state and a non-abutting state. In the abutting state, the first arc-shaped portion 21 abuts against the end of the push rod 40, so that the jaws 200 are switched to the closed state; in the non-abutting state, the end of the push rod 40 is located in the concave groove 220 surrounded by the second arc-shaped portion 22, so that the jaws 200 are switched to the open state.
[0063] When the abutting member 2 abuts against the outwardly convex first arc-shaped portion 21, the jaw 200 can be locked in a closed state without providing a complicated locking structure. The stapler body 100 has a simple structure and better reliability, which can prevent the jaw 200 from opening accidentally.
[0064] In some embodiments, the first length is greater than the second length. The first length and the second length can be set according to actual needs, and the present application does not limit the first length and the second length.
[0065] In some embodiments, the push member 2 is fixed or integrally arranged with the first gear 31, the diameter of the first gear 31 is larger than the diameter of the push member 2, the first gear 31 includes a flange 313 extending outward from the bottom end of the push member 2, the flange 313 is located below the push rod 40, and the shape of the outer contour of the flange 313 in the circumferential direction is the same as the shape of the outer contour of the push member 2 in the circumferential direction, so as to reduce the contact area with the push rod 40, thereby reducing friction and ensuring the smooth rotation of the push member 2.
[0066] In some embodiments, the abutting member 2 and the first gear 31 are driven by different power sources.
[0067] In some embodiments, the abutting member 2 and the first gear 31 are fixed to the same shaft, and the power device 1 drives the shaft to rotate so as to drive the abutting member 2 and the first gear 31 to rotate synchronously.
[0068] In some embodiments, the first gear 31 is provided with a first hole (not shown), and the resisting member 2 is provided with a second hole 23, and the first hole is aligned with the second hole 23 for the first shaft portion 310 to pass through, so as to realize the rotation of the first gear 31 and the resisting member 2 relative to the housing 6.
[0069] Ginseng Figure 10 to Figure 11 The push rod 40 includes a rod body 401 and a rolling member 402 rotatably connected to the rod body 401. In the abutting state, the rolling member 402 abuts against the first arc-shaped portion 21. When the abutting member 2 rotates, the rolling member 402 rolls along the first arc-shaped portion 21. The provision of the rolling member 402 can ensure the smooth rotation of the abutting member 2, especially in the transition stage when the top end of the push rod 40 moves out of the recessed groove 220, which can prevent the abutting member 2 from being stuck due to the inability to rotate, thereby ensuring the normal use of the stapler 300.
[0070] In some embodiments, in the non-affecting state, the second arc-shaped portion 22 contacts the end of the push rod 40 .
[0071] In some embodiments, in the non-abutting state, the second arc-shaped portion 22 does not contact the end of the push rod 40 .
[0072] In some embodiments, the rod body 401 includes a first ear 4011 and a second ear 4012 that are arranged opposite to each other, the rolling element 402 is located between the first ear 4011 and the second ear 4012 , and the rolling element 402 is axially connected to the first ear 4011 and the second ear 4012 .
[0073] In some embodiments, along the length direction of the push rod 40 , the rolling member 402 protrudes from the first ear 4011 and the second ear 4012 to prevent the first ear 4011 and the second ear 4012 from contacting the abutting member 2 and affecting the rotation of the abutting member 2 .
[0074] In some embodiments, along the length direction of the push rod 40 , the rolling member 402 may not protrude from the first ear 4011 and the second ear 4012 , and a portion of the abutting member 2 protrudes between the first ear 4011 and the second ear 4012 .
[0075] Ginseng Figure 6 , Figure 8 and Figure 11 to Figure 12 In some embodiments, the stapler body 100 includes a top block 42, the sleeve 41 is fixed to the top block 42, and the top rod 40 moves to move the top block 42 and the sleeve 41 forward and backward to achieve the closing and opening of the jaws 200.
[0076] In some embodiments, the push rod 40 includes a protrusion 4013 , and the top block 42 is provided with a groove 420 , and the protrusion 4013 is received in the groove 420 to increase the stability of the connection between the push rod 40 and the top block 42 .
[0077] The protrusion 4013 may also be disposed on the top block 42 , and correspondingly, the groove 420 is disposed on the top rod 40 .
[0078] In some embodiments, the top rod 40 may be integrally provided with the top block 42 .
[0079] In some embodiments, the top rod 40 may be detachably connected to the top block 42 .
[0080] In some embodiments, the top rod 40 may be fixed to the top block 42 and cannot be removed.
[0081] In some embodiments, the protrusion 4013 is disposed on the rod body 401 and is disposed opposite to the rolling element 402 .
[0082] In some embodiments, the top block 42 is provided with a through hole 421 for the core shaft 52 to pass through.
[0083] The housing 6 is further provided with a receiving cavity 61 , and the top block 42 is located in the receiving cavity 61 and can move along the receiving cavity 61 to move forward and backward.
[0084] In some embodiments, the stapler body 100 includes an elastic member 7, the opposite ends of which are respectively abutted against the shell 6 and the top block 42. When the top block 42 moves forward, it squeezes the elastic member 7, and the elastic force of the elastic member 7 causes the top block 42 to retreat.
[0085] In some embodiments, the elastic member 7 may be a spring or other elastic body.
[0086] Ginseng Figures 1 to 3 and Figures 6 to 10 In the initial state of the stapler 300 of the embodiment of the present application, the jaws 200 are in an open state, and the end of the push rod 40 is located in the concave groove 220 surrounded by the second arc-shaped portion 22. At this time, the power device 1 is started, and the power device 1 rotates forward in the first direction to drive the fifth gear 35 to rotate, and the fifth gear 35 rotates with the fourth gear 34 and the third gear 33, and the third gear 33 rotates with the first gear 31 until the top of the push rod 40 moves out of the concave groove 220, so that the outwardly convex first arc-shaped portion 21 of the abutting member 2 abuts against the push rod 40, and the jaws 200 are switched to a closed state. During this process, the second gear 32 does not rotate, and the rack 51 stops, that is, the cutting knife does not fire.
[0087] At this time, as the first gear 31 continues to rotate, the first tooth portion 311 meshes with the second tooth portion 321, the first gear 31 drives the second gear 32 to rotate, the second gear 32 drives the rack 51 to move forward, and the cutting knife is fired. In this process, since the first arc portion 21 always abuts against the push rod 40, the jaws 200 always remain in the closed state.
[0088] After firing, the power device 1 reverses in a second direction opposite to the first direction. During this process, the first gear 31 rotates with the second gear 32 to retract the cutting knife. After the cutting knife is retracted, the toothless portion 312 of the first gear 31 cooperates with the second gear 32. When the first gear 31 continues to rotate, the second gear 32 does not rotate. When the first gear 31 rotates until the top end of the push rod 40 enters the recessed groove 220, the jaws 200 switches to the open state, that is, the stapler 300 returns to the initial state.
[0089] exist Figure 6 In the embodiment, the counterclockwise direction is the first direction, and the clockwise direction is the second direction. This application does not limit the first direction.
[0090] Ginseng Figures 13 to 16 The stapler body 100 can be switched between an electric mode and a manual mode. When the electric mode of the stapler body 100 fails, the jaws 200 can be opened and the cutting knife can be retracted through the manual mode, thereby further improving the safety of the stapler body 100 and avoiding medical accidents.
[0091] In the electric mode, the fourth tooth portion 341 of the fourth gear 34 is meshed with the fifth tooth portion 351 of the fifth gear 35. In the manual mode, the fourth tooth portion 341 of the fourth gear 34 is disengaged from the fifth tooth portion 351 of the fifth gear 35, and an external operating member can be assembled on the connecting member 36. By manually operating the external operating member, the external operating member rotates with the third gear 33, and the third gear 33 rotates with the first gear 31, so as to realize the operation of the stapler body 100.
[0092] In some embodiments, when the electric power fails, the connecting member 36 is pressed downward to switch to the manual mode, and the fourth gear 34 moves downward to disengage from the fifth gear 35 .
[0093] In some embodiments, the stapler body 100 further includes a stopper 81. In the manual mode, the stopper 81 is located above the connecting member 36 to prevent it from moving upward, thereby ensuring that the stapler body 100 remains in the manual mode.
[0094] The retaining member 81 can move between a first position and a second position. In the first position, the retaining member 81 is located above the connecting member 36, and the stapler body 100 is in a manual mode; in the second position, the retaining member 81 is located on one side of the connecting member 36, and the stapler body 100 is in an electric mode.
[0095] Ginseng Figures 16 to 18 In some embodiments, the stapler body 100 further includes a first elastic device 82, the first elastic device 82 abuts against the stopper 81, and the other end abuts against the shell 6 to ensure that the stopper 81 remains in the first position.
[0096] When the blocking member 81 moves from above the connecting member 36 to the second position, the blocking member 81 squeezes the first elastic device 82. When the connecting member 36 is pressed downward to the first position, the elastic force of the first elastic device 82 pushes against the blocking member 81, causing it to automatically move to above the connecting member 36 without manual operation, making it more convenient to use.
[0097] In some embodiments, the first elastic device 82 may be a torsion spring or other elastic body.
[0098] In some embodiments, the retaining member 81 is rotatably connected to the housing 6. The retaining member 81 includes a base 811 and a pair of ears 812 extending from the base 811. When the stapler body 100 is in manual mode, the retaining member 81 is located above the connecting member 36.
[0099] The pair of ears 812 are respectively provided with first assembly holes 8121. The housing 6 is provided with a second assembly hole 62. The stapler body 100 further includes a first limiting shaft 83, which passes through the first assembly hole 8121 and is assembled in the second assembly hole 62 to realize the rotation of the stopper 81.
[0100] The first elastic device 82 includes an assembly portion 821 and a first stop portion 822 and a second stop portion 823 disposed on the assembly portion 821. The assembly portion 821 is provided with 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 stop portion 822 abuts against the base portion 811, and the second stop portion 823 abuts against the housing 6.
[0101] In some embodiments, the base 811 is provided with a first groove 8111, and the shell 6 is provided with a second groove 63. The first resisting portion 822 is located in the first groove 8111 to prevent the first resisting portion 822 from being displaced, thereby ensuring that the first resisting portion 822 resists against the base 811; the second resisting portion 823 is located in the second groove 63 to prevent the second resisting portion 823 from being displaced, thereby ensuring that the second resisting portion 823 resists against the shell 6.
[0102] In some embodiments, the housing 6 includes a first limiting portion 64, the first limiting portion 64 surrounds a first limiting hole 641, the base 811 passes through the first limiting hole 641 and can move along the width direction of the first limiting hole 641 to move to the top of the connecting member 36 or move away from the top of the connecting member 36 to one side thereof. The provision of the first limiting portion 64 can increase the reliability of the blocking member 81.
[0103] In some embodiments, the housing 6 further includes a second limiting portion 65, which surrounds a second limiting hole 651. The base 811 passes through the first limiting hole 641 and the second limiting hole 651 and can move along the width direction of the first limiting hole 641 and the second limiting hole 651 to move to the top of the connecting member 36 or move away from the top of the connecting member 36 to one side thereof. The provision of the second limiting portion 65 can increase the reliability of the blocking member 81.
[0104] Ginseng Fig.14 In some embodiments, the stapler body 100 further includes a second elastic device 84. When the connecting member 36 moves downward, it squeezes the second elastic device 84, and the resisting force of the second elastic device 84 resists the connecting member 36 upward, causing it to move upward.
[0105] When the connecting member 36 is pressed downward, the connecting member 36 squeezes the second elastic device 84, and when the retaining member 81 is removed from above the connecting member 36, the elastic force of the second elastic device 84 pushes the connecting member 36 upward, so that the fourth tooth portion 341 of the fourth gear 34 is meshed with the fifth tooth portion 351 of the fifth gear 35, and the stapler 300 is restored to the electric mode. The second elastic device 84 is set, when the retaining member 81 is removed from above the connecting member 36, the push force of the second elastic device 84 pushes the connecting member 36 upward, so that the stapler body 100 automatically returns to the electric mode, and the operation is simple and convenient; at the same time, it ensures that the stapler 300 remains in the electric mode, ensuring the normal operation of the stapler 300.
[0106] In some embodiments, the second elastic device 84 may be a spring or other elastic body.
[0107] The top end of the connecting member 36 can be used to assemble an external operating member to rotate the connecting member 36 and the third gear 33. Figures 19 to 20 In some embodiments, the connecting member 36 is provided with an operating hole 361 for inserting the end of the external operating member to rotate with the connecting member 36. Optionally, the top end of the connecting member 36 can also be assembled into the hole of the external operating member.
[0108] In some embodiments, the operating hole 361 matches the shape of the end of the operating member, and both are shaped to ensure that the external operating member can rotate with the connecting member 36.
[0109] In some embodiments, the stapler body 100 includes a fixing member 9 sleeved on the connecting member 36, and the connecting member 36 can rotate relative to the fixing member 9. When the blocking member 81 is in the second position, the blocking member 81 blocks the fixing member 9.
[0110] In some embodiments, the fixing member 9 includes a convex rib 91. The housing 6 is provided with a receiving hole 66 and a slide groove 67 communicating with the receiving hole 66, the fixing member 9 is received in the receiving hole 66, and the convex rib 91 is received in the slide groove 67 and can move along the slide groove 67. The provision of the convex rib 91 can prevent the fixing member 9 from rotating when the connecting member 36 is pressed down, and at the same time, can provide a guide for the connecting member 36 to move up and down.
[0111] In some embodiments, a stop shoulder 362 is provided at the top of the connecting member 36. The fixing member 9 is located between the stop shoulder 362 and the fourth gear 34. The setting of the stop shoulder 362 can prevent the fixing member 9 from detaching from the connecting member 36 upward.
[0112] In some embodiments, the connecting member 36 includes a first connecting member 363 and a second connecting member 364 fixed together, the third gear 33 and the fourth gear 34 are integrally arranged with the first connecting member 363, and the shoulder 362 is arranged on the second connecting member 364 to facilitate assembly of the fixing member 9.
[0113] In some embodiments, the second elastic device 84 is disposed around the periphery of the third shaft portion 330 .
[0114] In some embodiments, a recess 342 is formed on the fourth gear 34 , and a top end of the second elastic device 84 is received in the recess 342 to increase the stability of the second elastic device 84 .
[0115] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without causing conflicts. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.
Claims
1. A stapler body, characterized in that: include: A jaw drive assembly, comprising a push rod, the push rod moves to switch the jaws connected to the stapler body between a closed state and an open state; A push member, comprising a first arc-shaped portion convex outwardly and a second arc-shaped portion concave inwardly, wherein the first arc-shaped portion extends a first length along the circumferential direction of the push member, and the second arc-shaped portion is connected to the first arc-shaped portion and extends a second length along the circumferential direction of the push member, and the push member can be switched between a push state and a non-pushing state, in which the first arc-shaped portion abuts against the end of the push rod so that the jaws are switched to the closed state, and in the non-pushing state, the end of the push rod is located in a concave groove surrounded by the second arc-shaped portion so that the jaws are switched to the open state; The power device can drive the abutting member to rotate so that the abutting member switches between the abutting state and the non-abutting state.
2. The stapler body according to claim 1, characterized in that: The push rod includes a rod body and a rolling member rotatably connected to the rod body. In the abutting state, the rolling member abuts against the first arc-shaped portion. When the abutting member rotates, the rolling member rolls along the first arc-shaped portion.
3. The stapler body according to claim 2, characterized in that: The rod body includes a first ear portion and a second ear portion that are arranged opposite to each other. The rolling element is located between the first ear portion and the second ear portion. The rolling element is axially connected to the first ear portion and the second ear portion.
4. The stapler body according to claim 1, characterized in that: The stapler body includes a transmission mechanism, and the transmission mechanism includes a first gear. The power device drives the first gear to rotate, and the first gear drives the abutting member to rotate.
5. The stapler body according to claim 4, characterized in that: The push piece is fixed to the first gear, the diameter of the first gear is larger than the diameter of the push piece, the first gear includes a convex edge extending outward from the bottom end of the push piece, the convex edge is located below the push rod, and the shape of the outer contour of the circumferential direction of the convex edge is the same as the shape of the outer contour of the circumferential direction of the push piece.
6. The stapler body according to claim 4, characterized in that: The first gear includes a plurality of first tooth portions and a toothless portion, the stapler body includes a cutting knife driving assembly, the cutting knife driving assembly includes a rack, and the transmission mechanism includes a second gear. In the non-affecting state, the second tooth portion of the second gear is located at the toothless portion. In the abutting state, the first gear drives the second gear to rotate and the second gear drives the rack forward and backward to fire and retract the cutting knife connected to the stapler body.
7. The stapler body according to claim 6, characterized in that: In the open state, the power device rotates forward in the first direction, the first gear rotates, and the second gear does not rotate. When the first gear rotates with the abutting member to the abutting state, 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 rotates with the second gear to complete the firing of the cutting knife. When the cutting knife has completed firing, the power device reverses in a second direction opposite to the first direction, the first gear drives the second gear to rotate, and the cutting knife completes retraction. When the cutting knife has completed retraction, the first gear drives the abutment to rotate to the non-abutment state, and the jaws switch from the closed state to the open state.
8. The stapler body according to any one of claims 1 to 7, characterized in that: The stapler body comprises a top block and a sleeve fixed to the top block, the sleeve is connected to the jaws, the top block carries the sleeve forward and backward, and the push rod is connected to the top block.
9. The stapler body according to claim 8, characterized in that: The stapler body includes a shell, the shell is provided with a receiving cavity, the top block is located in the receiving cavity, the top block can move forward and backward along the receiving cavity, the stapler body includes an elastic member, the opposite ends of the elastic member are respectively abutted against the shell and the top block, the top block squeezes the elastic member when moving forward, and the elastic force of the elastic member causes the top block to move backward.
10. A stapler, characterized in that: The invention comprises jaws and / or a cutting knife and a stapler body as claimed in any one of claims 1 to 9.