Electric stapler

Abstract

The present invention discloses an electric stapler, belonging to the technical field of medical devices. The first driving assembly of the electric stapler includes a guide rail member, the main body of the guide rail member is provided with a spiral guide groove around its own axis, and the spiral guide groove includes a variable radius channel and a constant radius channel that are connected; the lower half of the outer edge of the guide rail member is provided with a tooth segment and a toothless segment; one end of the linkage rod is slidably connected to the spiral guide groove, and the other end of the linkage rod is used to connect with the push tube of the sleeve assembly to drive the jaw assembly to open or close; a firing rack, one end of the firing rack can be meshed and transmitted with the toothed segment of the guide rail member, and the other end of the firing rack is used to push and pull the firing assembly along the first direction. The present invention enables the jaw assembly and the firing assembly to work selectively in linkage, reduces the number of internal parts of the electric stapler, simplifies the doctor's operating steps, avoids misoperation, and ensures the smooth progress of the operation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an electric stapler. Background Art

[0002] With the popularization of electrosurgical instruments, electric staplers have been widely used in open or minimally invasive general surgery, thoracic surgery, urology, etc. in order to reduce the burden on doctors' hands and the adverse effects of hand shaking during firing.

[0003] A medical stapler is a medical device frequently used in surgical operations on physiological tissues. In the process of "closing, stapling, and cutting" on physiological tissues, each operation of the commonly used staplers is performed by an independent mechanism, requiring doctors to perform the operation multiple times. The operation steps are usually cumbersome and prone to misoperation, which may even cause the failure of the operation.

[0004] Therefore, it is urgent to provide an electric stapler to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an electric stapler, which enables the jaw assembly and the firing assembly to work in conjunction with each other selectively, thereby reducing the number of internal parts of the electric stapler, simplifying the doctor's operating steps, avoiding misoperation, and ensuring the smooth progress of the operation.

[0006] In order to achieve the above objectives, the following technical solutions are provided:

[0007] An electric stapler comprises a sleeve assembly and a jaw assembly and a handle shell respectively arranged at opposite ends of the sleeve assembly along a first direction, wherein a firing assembly is arranged in the sleeve assembly, and the electric stapler further comprises a first driving assembly, wherein the first driving assembly comprises:

[0008] A guide rail member is rotatably arranged in the handle shell, wherein the main body of the guide rail member is provided with a spiral guide groove around its own axis, and the spiral guide groove includes a variable radius channel and a constant radius channel connected to each other; the lower half of the outer edge of the guide rail member is provided with a tooth segment and a toothless segment;

[0009] A linkage rod, one end of which is slidably connected to the spiral guide groove, and the other end of which is used to be connected to the push tube of the sleeve assembly to drive the jaw assembly to open or close; and

[0010] A firing rack, one end of which can mesh with the toothed segment of the guide rail member for transmission, and the other end of which is used to push and pull the firing assembly along the first direction X; when one end of the linkage rod is located in the variable radius channel, the firing rack corresponds to the toothless segment; when one end of the linkage rod is located in the equal radius channel, the firing rack meshes with the toothed segment.

[0011] As an optional solution of the electric stapler, the first drive assembly further includes:

[0012] a first electric drive; and

[0013] The first transition gear set, the first electric drive member and the first transition gear set are both arranged in the handle shell, the upper half of the outer edge of the guide rail member is provided with a full tooth segment, and the first electric drive member is meshed and transmitted with the full tooth segment of the guide rail member through the first transition gear set.

[0014] As an optional solution of the electric stapler, the first drive assembly further includes:

[0015] The second transition gear set is arranged in the handle shell, the lower half of the second transition gear set is meshed with the firing rack for transmission, and the upper half of the second transition gear set can be meshed with the toothed section of the guide rail member for transmission.

[0016] As an optional solution of the electric stapler, the outer wall of the rotating knife holder of the sleeve assembly is provided with a push rod that can slide along the first direction, and the electric stapler also includes a second drive assembly, and the second drive assembly includes:

[0017] A push block, used for slidingly slidably disposed in the handle shell along the first direction;

[0018] A rotating ring, the outer wall of which is rotatably connected to the push block, and one end of the rotating tool holder is inserted through the inner wall of the rotating ring; and

[0019] A positioning column passes through the rotating ring and is fixedly connected to the push rod.

[0020] As an optional solution of the electric stapler, the second drive assembly further includes:

[0021] A second electric drive component is disposed in the handle housing;

[0022] A lead screw, one end of which is drivingly connected to the second electric drive member, and the other end of which extends along the first direction;

[0023] a nut threadedly connected to the lead screw; and

[0024] A latch pin passes through the nut and is plugged into the push block.

[0025] As an optional solution for the electric stapler, the outer wall of the push rod of the sleeve assembly is provided with an avoidance cutout, the outer wall of the rotating knife holder of the sleeve assembly is provided with a first limiting groove, and the electric stapler further includes a third drive assembly, and the third drive assembly includes:

[0026] The rotating shell has a first limiting portion disposed therein, and the limiting end of the first limiting portion passes through the avoidance cutout and is engaged with the first limiting groove. The rotating shell is used to drive the rotating tool holder to rotate.

[0027] As an optional solution for the electric stapler, a second limiting portion is provided in the rotating shell, and the third driving assembly further includes:

[0028] a gear ring, embedded in the second limiting portion of the rotating shell; and

[0029] The third electric drive component is arranged in the handle shell, and the third electric drive component can be drivingly connected to the gear ring.

[0030] As an optional solution for the electric stapler, the outer ring of the gear ring is provided with a protrusion, the second limiting portion is provided with a second limiting groove, and the protrusion is engaged with the second limiting groove.

[0031] As an optional solution for the electric stapler, the inner ring of the gear ring is provided with transmission teeth, and the third drive assembly further includes:

[0032] The third transition gear set is rotatably disposed in the handle shell, and the third electric drive component is transmission-connected to the transmission gear via the third transition gear set.

[0033] As an optional solution for the electric stapler, the electric stapler further includes a control module, which is disposed in the handle shell, and the first electric drive component, the second electric drive component and the third electric drive component are all electrically connected to the control module.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The electric stapler provided by the present invention further includes a first drive assembly, wherein the guide rail member of the first drive assembly is rotatably disposed in the handle shell, the linkage rod of the first drive assembly is slidably connected to the spiral guide groove of the guide rail member, the linkage rod is used to connect to the push tube of the sleeve assembly to drive the jaw assembly to open or close, the firing rack of the first drive assembly is meshed with the toothed segment of the guide rail member for transmission, and the firing rack is used to connect to the firing assembly. During the operation, the guide rail part is rotated forward, one end of the linkage rod slides along the variable radius channel of the spiral guide groove, and the firing rack corresponds to the toothless section of the guide rail part. As the radius of the variable radius channel gradually increases, the linkage rod can push the push tube forward in a first direction and approach the jaw assembly, thereby closing the jaw assembly, and the firing rack does not move. The guide rail part continues to be rotated forward, so that one end of the linkage rod slides along the equal radius channel of the spiral guide groove and the firing rack engages with the toothed section of the guide rail part. The firing rack pushes the firing assembly forward in the first direction and fires, and the linkage rod does not push the push tube to keep the jaw assembly closed. After the operation is completed, the guide rail part is rotated in the opposite direction to reset the firing rack and the linkage rod and open the jaw assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0037] Figure 1 It is a schematic diagram of the assembly of the electric stapler in the embodiment of the present invention;

[0038] Figure 2 An exploded schematic diagram of the jaw assembly and the front end of the push rod in an embodiment of the present invention;

[0039] Figure 3 It is a schematic diagram of the structure of the first driving assembly, the push rod assembly, the firing assembly and the jaw assembly in an embodiment of the present invention;

[0040] Figure 4 It is a schematic diagram of the structure of the guide rail member in an embodiment of the present invention;

[0041] Figure 5 It is a schematic diagram of the structure in which the guide rail member drives the firing rack through the second transition gear set in an embodiment of the present invention;

[0042] Figure 6 It is a structural schematic diagram of a state in which the first driving assembly is in control of the jaw assembly in an embodiment of the present invention;

[0043] Figure 7It is a structural schematic diagram of the first driving component entering a state of controlling the firing component in an embodiment of the present invention;

[0044] Figure 8 is a structural schematic diagram of the second driving assembly in an initial state in an embodiment of the present invention;

[0045] Fig. 9 It is a structural schematic diagram of the second driving assembly in the embodiment of the present invention in the left swing state;

[0046] Fig.10 It is a structural schematic diagram of the second driving assembly in the embodiment of the present invention in the right swing state;

[0047] Fig.11 A cross-sectional view of the cooperation between the second driving assembly and the rotating tool holder in an embodiment of the present invention;

[0048] Fig.12 Schematic diagram of an explosion of the second drive assembly in an embodiment of the present invention (the latch is not shown);

[0049] Fig.13 It is a schematic diagram of the structure of the cooperation between the second driving assembly and the push tube assembly in an embodiment of the present invention;

[0050] Fig.14 It is a schematic diagram of the structure of the rotating shell in an embodiment of the present invention;

[0051] Fig.15 A schematic diagram of the structure of the gear ring in an embodiment of the present invention;

[0052] Fig.16 Schematic diagram of the structure of the control module in the embodiment of the present invention.

[0053] Reference numerals:

[0054] 100, sleeve assembly; 101, push tube; 1011, avoidance incision; 1012, limiting ear; 1013, avoidance hole; 102, rotating knife holder; 1021, first limiting groove; 103, push rod; 200, jaw assembly; 201, nail magazine seat; 2011, sliding hole; 2012, round hole; 202, nail support seat; 2021, rotating shaft; 2022, raised limiting edge; 2023, slope surface; 203, angle control member; 300, handle shell; 400, firing assembly; 401, cutting knife assembly; 402, spindle; 500, control module; 600, swing head transmission assembly; 601, first transmission gear; 602, second transmission gear; 603, sliding member;

[0055] 1. First drive assembly; 2. Second drive assembly; 3. Third drive assembly;

[0056] 11. Guide rail; 111. Spiral guide groove; 1111. Variable radius channel; 1112. Equal radius channel; 112. Toothed segment; 113. Non-toothed segment; 114. Full toothed segment; 12. Linkage rod; 13. Firing rack; 14. First electric drive; 15. First transition gear set; 16. Second transition gear set; 17. Sliding block; 18. Bearing;

[0057] 21. Push block; 211. Second plug hole; 212. Positioning groove; 22. Rotating ring; 221. Pin hole; 23. Positioning column; 24. Second electric drive member; 25. Lead screw; 26. Nut; 261. Threaded hole; 262. First plug hole; 27. Pin;

[0058] 31. Rotating shell; 311. First limiting portion; 312. Second limiting portion; 3121. Second limiting groove; 32. Gear ring; 321. Protruding portion; 322. Transmission tooth; 33. Third electric drive member; 34. Third transition gear set;

[0059] X, first direction. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0061] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0062] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0064] In order to enable the jaw assembly and the firing assembly to work in conjunction with each other, reduce the number of internal parts of the electric stapler, simplify the doctor's operation steps, avoid misoperation, and ensure the smooth progress of the operation, this embodiment provides an electric stapler,

[0065] The following combination Figures 1 to 16 The specific contents of this embodiment are described in detail. Figures 1 to 7 As shown, the electric stapler in this embodiment includes a sleeve assembly 100 and a jaw assembly 200 and a handle shell 300 respectively arranged at opposite ends of the sleeve assembly 100 along a first direction X, and a firing assembly 400 is arranged in the sleeve assembly 100.

[0066] The jaw assembly 200 includes a nail magazine seat 201 and a pivotable anvil seat 202, wherein the nail magazine seat 201 is provided with a sliding hole 2011 and a circular hole 2012, and the anvil seat 202 is provided with a rotating shaft 2021, a protruding limiting edge 2022 and a slope surface 2023, wherein the rotating shaft 2021 can rotate and slide in the sliding hole 2011, and the rotating shaft 2021 can rotate in the circular hole 2012. The sleeve assembly 100 includes a push tube 101 and a rotating blade holder 102 located in the push tube 101, the jaw assembly 200 is arranged at the front end of the rotating blade holder 102, and the firing assembly 400 is located in the rotating blade holder 102, and the firing assembly 400 is fired and reset by moving forward and backward along a first direction. The tube wall at the front end of the push tube 101 is provided with an avoidance hole 1013 and a limiting ear 1012. The limiting ear 1012 can abut against the raised limiting edge 2022 and rotate the anvil seat 202. When the push tube 101 of the sleeve assembly 100 moves forward, the push tube 101 pushes the slope surface 2023 to close the jaw assembly 200; when the push tube 101 of the sleeve assembly 100 moves backward, the limiting ear 1012 pulls the raised limiting edge 2022 to open the jaw assembly 200. When the rotating tool holder 102 drives the jaw assembly 200 to rotate, the avoidance hole 1013 on the tube wall at the front end of the push tube 101 can allow the raised limiting edge 2022 to rotate to avoid structural interference.

[0067] Among them, Figure 3 Combination Figure 4 and Figure 5As shown, the electric stapler further comprises a first driving assembly 1, which comprises a guide rail member 11, a linkage rod 12 and a firing rack 13. The guide rail member 11 is rotatably arranged in the handle shell 300, and the main body of the guide rail member 11 is provided with a spiral guide groove 111 around its own axis, and the spiral guide groove 111 comprises a variable radius channel 1111 and a constant radius channel 1112 that are connected; the lower half of the outer edge of the guide rail member 11 is provided with a toothed section 112 and a toothless section 113, and the central angle corresponding to the toothless section 113 is equal to the central angle corresponding to the variable radius channel 1111, and the central angle corresponding to the toothed section 112 is equal to the central angle corresponding to the constant radius channel 1112. One end of the linkage rod 12 is slidably connected to the spiral guide groove 111 through a bearing 18, and the other end of the linkage rod 12 is used to connect to the push tube 101 of the sleeve assembly 100 to drive the jaw assembly 200 to open or close. For example, in this embodiment, a slider 17 is fixedly sleeved on the push tube 101, and the other end of the linkage rod 12 is connected to the slider 17. One end of the firing rack 13 can be meshed with the toothed segment 112 of the guide rail member 11 for transmission, and the other end of the firing rack 13 is connected to the firing assembly 400 and is used to push and pull the firing assembly 400 along the first direction X. When one end of the linkage rod 12 is located in the variable radius channel 1111, the firing rack 13 corresponds to the toothless segment 113; when one end of the linkage rod 12 is located in the equal radius channel 1112, the firing rack 13 is meshed with the toothed segment 112.

[0068] In short, the electric stapler provided in this embodiment has a first drive component 1 added therein, wherein the guide member 11 of the first drive component 1 is rotatably disposed in the handle shell 300, the linkage rod 12 of the first drive component 1 is slidably connected to the spiral guide groove 111 of the guide member 11, the linkage rod 12 is used to connect to the push tube 101 of the sleeve assembly 100 to drive the jaw assembly 200 to open or close, the firing rack 13 of the first drive component 1 is meshed with the toothed segment 112 of the guide member 11 for transmission, and the firing rack 13 is used to connect to the firing assembly 400. The operation is performed and the guide rail 11 is rotated forward, one end of the linkage rod 12 slides along the variable radius channel 1111 of the spiral guide groove 111, and the firing rack 13 corresponds to the toothless section 113 of the guide rail 11. As the radius of the variable radius channel 1111 gradually increases, the linkage rod 12 can push the push tube 101 to move forward along the first direction X and approach the jaw assembly 200, thereby closing the jaw assembly 200, and the firing rack 13 does not move; the guide rail continues to rotate forward. Part 11, when one end of the linkage rod 12 slides along the equal-radius channel 1112 of the spiral guide groove 111 and the firing rack 13 engages with the toothed section 112 of the guide rail part 11, the firing rack 13 pushes the firing assembly 400 to move forward along the first direction X and fires, and the linkage rod 12 does not push the push tube 101 to keep the jaw assembly 200 closed; after the operation is completed, the guide rail part 11 is rotated in the reverse direction to reset the firing rack 13 and the linkage rod 12 and open the jaw assembly 200.

[0069] The electric stapler provided in this embodiment simplifies the jaw opening and closing action and the mechanism for maintaining the jaw closed, thereby improving the stability and safety of the device. The variable diameter spiral guide groove 111 is used to drive the jaw assembly 200 to open or close, and the constant radius channel 1112 gradually changes to keep the jaw assembly 200 in a closed state.

[0070] Furthermore, if Figure 3 and Figure 4 As shown, the first drive assembly 1 also includes a first electric drive member 14 and a first transition gear set 15. The first electric drive member 14 and the first transition gear set 15 are both arranged in the handle shell 300. The upper half of the outer edge of the guide member 11 is provided with a full tooth segment 114. The first electric drive member 14 is meshed with the full tooth segment 114 of the guide member 11 through the first transition gear set 15. The first transition gear set 15 in this embodiment includes two transition gears. By adding the first transition gear set 15, the effect of reversing or reducing speed and increasing torque can be achieved.

[0071] In some application scenarios, a clutch mechanism may be provided on the two transition gears, and the two transition gears may be meshed or disengaged through the clutch mechanism, thereby maintaining or interrupting the driving force of the first electric drive component 14 on the guide rail component 11 .

[0072] Furthermore, if Figure 3 , Figure 4 and Figure 5 As shown, the first drive assembly 1 also includes a second transition gear set 16, which is disposed in the handle shell 300. The lower half of the second transition gear set 16 is meshed with the firing rack 13 for transmission, and the upper half of the second transition gear set 16 can be meshed with the toothed section 112 of the guide rail member 11 for transmission. In this embodiment, the second transition gear set 16 includes a transition gear. By adding the second transition gear set 16, the rotational motion of the guide rail member 11 can be converted into the linear motion of the firing rack 13, and the power of the guide rail member 11 is transmitted to the firing rack 13, so that the firing rack 13 can drive the firing assembly 400 to work. The firing assembly 400 includes a connected cutting knife assembly 401 and a spindle 402. The first firing assembly 400 is used to fire the jaw assembly 200, and the spindle 402 is fixedly connected to the firing rack 13.

[0073] Furthermore, if Figures 8 to 12 As shown, the tail of the jaw assembly 200 is provided with an angle control member 203, the outer wall of the rotating blade holder 102 of the sleeve assembly 100 is provided with a push rod 103 that can slide along the first direction X, and the push rod 103 is used to drive the swing head transmission assembly 600 to move, and the swing head transmission assembly 600 includes a first transmission gear 601, a second transmission gear 602 and a sliding member 603 with a rack, one end of the sliding member 603 is connected to the push rod 103, and the sliding member 603, the second transmission gear 602, the first transmission gear 601 and the angle control member 203 are meshed and transmitted in sequence, and the electric stapler also includes a second driving assembly 2, and the second driving assembly 2 includes a push block 21, a rotating ring 22 and a positioning column 23. The push block 21 is used to be slidably arranged in the handle shell 300 along the first direction X; the outer wall of the rotating ring 22 is rotatably connected to the push block 21, and one end of the rotating blade holder 102 is penetrated through the inner wall of the rotating ring 22. The positioning column 23 passes through the rotating ring 22 and is fixedly connected to the push rod 103. An annular rotating ring 22 is connected to the push block 21, and the rotating ring 22 can rotate freely inside the push block 21, so that the swing head control and the rotation control can be applied at the same time, so that all the actions of the stapler can be driven by electric power.

[0074] The cooperation between the sliding member 603 in this embodiment and the two second transmission gears 602 of different sizes and the first transmission gear 601 ensures that when the angle control member 203 approaches the sliding member 603, the sliding member 603 moves backward without causing interference.

[0075] When the push block 21 moves along the first direction X, the power can be transmitted to the push rod 103 through the rotating ring 22 and the positioning column 23, so that the push rod 103 is displaced along the first direction X, and the jaw assembly 200 swings left and right. The positioning column 23 includes a first positioning section and a second positioning section, the first positioning section is provided with a straight groove, and the second positioning section is used for fixed insertion with the push rod 103.

[0076] Furthermore, the second drive assembly 2 also includes a second electric drive member 24, a lead screw 25, a nut 26 and a latch 27. The second electric drive member 24 is disposed in the handle housing 300. One end of the lead screw 25 is transmission-connected to the second electric drive member 24, and the other end of the lead screw 25 extends along the first direction X. The nut 26 is threadedly connected to the lead screw 25. The latch 27 passes through the nut 26 and is plugged into the push block 21. The second electric drive member 24 converts the rotational motion of the second electric drive member 24 into the linear motion of the nut 26 through the mechanism composed of the lead screw 25 and the nut 26, and then utilizes the cooperation of the latch 27 and the push block 21 to realize the automatic swing of the jaw assembly 200.

[0077] Specifically, the nut 26 is provided with a threaded hole 261 and a first insertion hole 262, the push block 21 is provided with a second insertion hole 211 and a limiting groove 212 for accommodating the rotating ring 22, the rotating ring 22 is provided with a pin hole 221, and the plug 27 can be sequentially inserted into the first insertion hole 262 and the second insertion hole 211. Preferably, the connection mode of the plug 27 with the nut 26 and the push block 21 in this embodiment is a pluggable connection.

[0078] In the mechanism of the swinging head action, the nut 26 and the push block 21 are connected by a pin 27, so that when the second electric drive component 24 fails (in the event of electric power failure), the angle control component 203 can be disconnected from the second electric drive component 24 by pulling out the pin 27, so that the angle control component 203 can be returned to its original position without the need for a complex mechanism or the addition of a separate tool.

[0079] Furthermore, if Figure 3 Combination Figures 13 to 15 As shown, the outer wall of the push rod 103 of the sleeve assembly 100 is provided with an avoidance cutout 1011, the outer wall of the rotating blade holder 102 of the sleeve assembly 100 is provided with a first limiting groove 1021, and the electric stapler further includes a third driving assembly 3, the third driving assembly 3 includes a rotating shell 31, a first limiting portion 311 is provided in the rotating shell 31, the limiting end of the first limiting portion 311 passes through the avoidance cutout 1011 and is engaged with the first limiting groove 1021, and the rotating shell 31 is used to drive the rotating blade holder 102 to rotate. The rotating blade holder 102 can be driven by rotating the rotating shell 31, so that the sleeve assembly 100 rotates as a whole.

[0080] Furthermore, a second limiting portion 312 is provided in the rotating shell 31, and the third driving assembly 3 further includes a gear ring 32 and a third electric driving member 33. The gear ring 32 is embedded in the second limiting portion 312 of the rotating shell 31; and the third electric driving member 33 is provided in the handle shell 300, and the third electric driving member 33 can be connected to the gear ring 32 in a transmission manner, so that the rotation of the rotating shell is driven by the third electric driving member 33.

[0081] Furthermore, the outer ring of the gear ring 32 is provided with a protrusion 321, and the second limiting portion 312 is provided with a second limiting groove 3121, and the protrusion 321 is engaged with the second limiting groove 3121. The cooperation between the protrusion 321 and the second limiting groove 3121 improves the stability of the connection between the gear ring 32 and the rotating shell 31.

[0082] Furthermore, the inner ring of the gear ring 32 is provided with a transmission tooth 322, and the third driving assembly 3 further includes a third transition gear set 34, which is rotatably disposed in the handle housing 300, and the third electric drive member 33 is transmission-connected with the transmission tooth 322 via the third transition gear set 34. In this embodiment, the third transition gear set 34 includes a transition gear, which can play a role in reducing speed and increasing torque.

[0083] Furthermore, if Fig.16 As shown, the electric stapler further includes a control module 500, which is disposed in the handle housing 300, and the first electric driver 14, the second electric driver 24, and the third electric driver 33 are all electrically connected to the control module 500. The control module 500 can control the start time and duration of the first electric driver 14, the second electric driver 24, and the third electric driver 33 according to the use requirements.

[0084] For example, the first electric drive 14, the second electric drive 24 and the third electric drive 33 may be, but are not limited to, motors. The handle housing 300 is provided with switch buttons corresponding to the control electric drives.

[0085] In summary, the electric stapler in this embodiment controls the first electric driver 14, the second electric driver 24 and the third electric driver 33 through the control module 500, so as to realize the fully automated operation of the electric stapler, simplify the operation of the stapler, reduce the operation difficulty, and reduce the risk of medical accidents caused by improper operation of the stapler during surgery. The specific working principle of the electric stapler in this embodiment is as follows:

[0086] 1. Closing and striking action mode:

[0087] 1. Jaw control action: the first electric drive member 14 drives the guide rail member 11 to rotate through the first transition gear set 15, and drives the linkage rod 12 to move forward and backward along the first direction X through the variable radius channel 1111 of the spiral guide groove 111. The bearing 18 ensures smooth movement between the spiral guide groove 111 and the linkage rod 12. The linkage rod 12 drives the slider 17 to move forward and backward. The slider 17 drives the push tube 101 of the sleeve assembly 100. The sleeve assembly 100 is connected to the jaw assembly 200, so as to realize the closing or opening of the jaws;

[0088] 2. Firing control action: the first electric drive member 14 drives the guide rail member 11 to rotate through the first transition gear group 15, drives the second transition gear group 16 through the toothed segment 112, the second transition gear group 16 drives the firing rack 13, the firing rack 13 drives the core shaft 402, and the core shaft 402 drives the cutting knife assembly 401 to move, thereby realizing the firing and retracting of the instrument.

[0089] State description: a. When the variable radius channel 1111 (progressive section) of the spiral guide groove 111 cooperates with the linkage rod 12, the toothless section 113 cooperates with the second transition gear set 16 and is in the jaw movement state; b. When the equal radius channel 1112 (circular section) of the spiral guide groove 111 cooperates with the linkage rod 12, the jaws are completely closed, and the toothed section 112 cooperates with the second transition gear set 16 and is in the firing state.

[0090] 2. Left and right head swing action mode:

[0091] The second electric drive component 24 drives the nut 26 to move forward and backward along the first direction X through the screw rod. The nut 26 drives the push rod 103 to move through the pin 27, the push block 21, the rotating ring 22 and the positioning column 23. The push rod 103 can slide back and forth in the tool holder groove of the rotating tool holder 102. The push rod 103 drives the angle control component 203 to rotate through the rack of the sliding component 603, the second transmission gear 602, and the first transmission gear 601. The angle control component 203 is fixed to the jaw assembly 200, thereby realizing the head swinging action.

[0092] State description: a. When the nut 26 moves forward along the first direction X, the jaw assembly 200 swings to the left; b. When the nut 26 moves backward along the first direction X, the jaw assembly 200 swings to the right;

[0093] 3. Rotation action mode:

[0094] The third electric drive member 33 drives the ring gear 32 to rotate through the third transition gear set 34 . The ring gear 32 is fixedly mounted on the rotating shell 31 . The rotating shell 31 is fixed to the rotating tool holder 102 of the sleeve assembly 100 , thereby driving the sleeve assembly 100 to rotate.

[0095] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An electric stapler, comprising a sleeve assembly (100) and a jaw assembly (200) and a handle shell (300) respectively arranged at opposite ends of the sleeve assembly (100) along a first direction (X), wherein a firing assembly (400) is arranged in the sleeve assembly (100), characterized in that: The invention also comprises a first drive assembly (1), wherein the first drive assembly (1) comprises: A guide rail member (11) is rotatably arranged in the handle shell (300), the main body of the guide rail member (11) being provided with a spiral guide groove (111) around its own axis, the spiral guide groove (111) comprising a variable radius channel (1111) and a constant radius channel (1112) being connected; a toothed section (112) and a toothless section (113) are provided at the lower half of the outer edge of the guide rail member (11), the central angle corresponding to the toothless section (113) being equal to the central angle corresponding to the variable radius channel (1111), and the central angle corresponding to the toothed section (112) being equal to the central angle corresponding to the constant radius channel (1112); a linkage rod (12), one end of which is slidably connected to the spiral guide groove (111), and the other end of which is used to be connected to the push tube (101) of the sleeve assembly (100) to drive the jaw assembly (200) to open or close; and a firing rack (13), one end of which can mesh with the toothed segment (112) of the guide rail member (11) for transmission, and the other end of which is used to push and pull the firing assembly (400) along the first direction (X); when one end of the linkage rod (12) is located in the variable radius channel (1111), the firing rack (13) corresponds to the toothless segment (113); when one end of the linkage rod (12) is located in the equal radius channel (1112), the firing rack (13) meshes with the toothed segment (112); The outer wall of the rotating blade holder (102) of the sleeve assembly (100) is provided with a push rod (103) which can slide along the first direction (X), and the electric stapler further comprises a second drive assembly (2), and the second drive assembly (2) comprises: A push block (21), used for being slidably disposed in the handle housing (300) along the first direction (X); A rotating ring (22), the outer wall of the rotating ring (22) is rotatably connected to the push block (21), and one end of the rotating tool holder (102) is inserted through the inner wall of the rotating ring (22); and A positioning column (23) passes through the rotating ring (22) and is fixedly connected to the push rod (103); The outer wall of the push rod (103) of the sleeve assembly (100) is provided with an avoidance notch (1011), the outer wall of the rotating blade holder (102) of the sleeve assembly (100) is provided with a first limiting groove (1021), and the electric stapler further includes a third driving assembly (3), and the third driving assembly (3) includes: The rotating shell (31) is provided with a first limiting portion (311) therein, and the limiting end of the first limiting portion (311) passes through the avoidance cutout (1011) and is engaged with the first limiting groove (1021). The rotating shell (31) is used to drive the rotating tool holder (102) to rotate.

2. The electric stapler according to claim 1, characterized in that: The first driving assembly (1) further comprises: A first electric drive (14); and A first transition gear set (15), the first electric drive member (14) and the first transition gear set (15) are both arranged in the handle shell (300), a full tooth segment (114) is arranged on the upper half of the outer edge of the guide member (11), and the first electric drive member (14) is meshed with the full tooth segment (114) of the guide member (11) through the first transition gear set (15) for transmission.

3. The electric stapler according to claim 2, characterized in that: The first driving assembly (1) further comprises: A second transition gear set (16), the second transition gear set (16) is arranged in the handle shell (300), the lower half of the second transition gear set (16) is meshed with the firing rack (13) for transmission, and the upper half of the second transition gear set (16) can be meshed with the toothed section (112) of the guide rail member (11) for transmission.

4. The electric stapler according to claim 2 or 3, characterized in that: The second driving assembly (2) further comprises: A second electric drive component (24) is disposed in the handle housing (300); a lead screw (25), one end of the lead screw (25) being drivingly connected to the second electric drive member (24), and the other end of the lead screw (25) extending along the first direction (X); a nut (26) threadedly connected to the lead screw (25); and The latch pin (27) passes through the nut (26) and is plugged into the push block (21).

5. The electric stapler according to claim 4, characterized in that: The rotating shell (31) is provided with a second limiting portion (312), and the third driving assembly (3) further comprises: A gear ring (32) is embedded in the second limiting portion (312) of the rotating shell (31); and A third electric drive component (33) is disposed in the handle housing (300), and the third electric drive component (33) can be transmission-connected to the gear ring (32).

6. The electric stapler according to claim 5, characterized in that: The outer ring of the gear ring (32) is provided with a protruding portion (321), the second limiting portion (312) is provided with a second limiting groove (3121), and the protruding portion (321) is engaged with the second limiting groove (3121).

7. The electric stapler according to claim 5, characterized in that: The inner ring of the gear ring (32) is provided with transmission teeth (322), and the third drive assembly (3) further comprises: The third transition gear set (34) is rotatably disposed in the handle housing (300), and the third electric drive member (33) is transmission-connected to the transmission gear (322) via the third transition gear set (34).

8. The electric stapler according to any one of claims 5 to 7, characterized in that: The electric stapler also includes a control module (500), which is disposed in the handle shell (300), and the first electric drive component (14), the second electric drive component (24) and the third electric drive component (33) are all electrically connected to the control module (500).

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