Nail cartridge assembly for surgical instrument and surgical instrument

Abstract

The present application relates to a nail magazine assembly and surgical instrument for surgical instruments. The nail magazine assembly includes a nail magazine body and a nail pusher slider. The nails can be installed inside the nail magazine body, and the nail pusher slider can slide relative to the nail magazine body. When the nail magazine body is full of nails, the nail pusher slider protrudes from the nail magazine body, so that when the nail magazine assembly is installed on the nail magazine seat, the nail pusher slider can push the first transmission assembly to move toward the proximal end; when the nail magazine body is not full of nails or there are no nails, when the nail magazine assembly is installed on the nail magazine seat, the nail pusher slider cannot push the first transmission assembly to move. The nail magazine assembly for surgical instruments provided by the present application can identify empty nail magazines or used nail magazines, greatly reducing the surgical risks caused by empty nail magazines or used nail magazines.

Description

Technical Field

[0001] The present application relates to the technical field of medical instruments, and in particular to a nail magazine assembly for surgical instruments and a surgical instrument. Background Art

[0002] Surgical instruments are commonly used in medicine to replace manual suturing. The main working principle is to use a cutting knife to cut the tissue and use titanium nails to anastomose the tissue, similar to a stapler.

[0003] There are two types of cutting and stapling actions: manual drive and electric drive. Compared with manual drive, electric surgical instruments are more labor-saving and easy to operate, and the cutting and stapling process is also more stable.

[0004] Before a surgical instrument performs cutting, it is generally necessary to identify the nail magazine. The purpose of identification is to avoid an empty nail magazine or the installation of a used nail magazine, thereby avoiding surgical risks caused by the nail magazine.

[0005] At present, the identification of the nail magazine of most surgical instruments is achieved through a purely mechanical structure, which leads to a relatively complex structure of the nail magazine, which further leads to a complex structure of the surgical instrument. Summary of the invention

[0006] In view of this, the embodiments of the present application provide a nail magazine assembly for a surgical instrument and a surgical instrument to solve at least one problem existing in the background technology.

[0007] In a first aspect, an embodiment of the present application provides a staple cartridge assembly, comprising:

[0008] The surgical instrument comprises a staple cartridge seat and a first transmission assembly, wherein the staple cartridge seat is used to operably support the staple cartridge assembly therein, and a distal end of the first transmission assembly can contact the staple cartridge assembly, and the staple cartridge assembly comprises:

[0009] A staple cartridge body, inside of which staples can be installed;

[0010] A nail-pushing slider, which can slide relative to the nail magazine body;

[0011] When the staple cartridge body is filled with the staples, the staple pushing slider protrudes from the staple cartridge body, so that when the staple cartridge assembly is installed on the staple cartridge seat, the staple pushing slider can push the first transmission assembly to move toward the proximal end;

[0012] When the staple cartridge body is not filled with the staples or has no staples, when the staple cartridge assembly is installed on the staple cartridge seat, the staple pushing slider cannot push the first transmission assembly to move.

[0013] In combination with the first aspect of the present application, in an optional embodiment, the nail magazine body has at least one slide groove, which extends along a first direction. The nail pushing slider is slidably connected to the slide groove, and the nail pushing slider moves along the first direction under the action of external force to push the nail out.

[0014] In combination with the first aspect of the present application, in an optional embodiment, the side wall of the nail pushing slider is provided with a first bayonet portion, the nail magazine body is provided with a first buckle portion, the first buckle portion is located on the inner wall of the slide groove, and the first bayonet portion matches the first buckle portion;

[0015] When the staple cartridge body is filled with the staples, the first buckle portion is engaged with the first bayonet portion to prevent the staple-pushing slider from moving relative to the slide groove.

[0016] In a second aspect, an embodiment of the present application provides a surgical instrument, comprising a staple cartridge body according to any one of the first aspects; the surgical instrument further comprises:

[0017] A nail cartridge seat, used for operably supporting the nail cartridge assembly located therein;

[0018] A first transmission assembly, the distal end of which is close to the proximal end of the staple cartridge seat;

[0019] a control assembly, comprising a trigger, the trigger being located at a proximal end of the first transmission assembly;

[0020] Wherein, when the nail magazine assembly is installed on the nail magazine seat,

[0021] The proximal end of the nail-pushing slider contacts the distal end of the first transmission assembly and is capable of pushing the first transmission assembly to move toward its proximal end, and the first transmission assembly acts on the trigger, so that the trigger activates the surgical instrument;

[0022] When the proximal end of the nail-pushing slider does not contact the distal end of the first transmission assembly, the surgical instrument is in an inactive state.

[0023] In conjunction with the second aspect of the present application, in an optional implementation manner, the first transmission assembly includes:

[0024] A trigger slider, wherein the proximal end of the pin-pushing slider can contact the distal end of the trigger slider;

[0025] A trigger push rod, wherein the driving force generated by the pin push slider is transmitted to the trigger push rod via the trigger slider;

[0026] The circular tube push rod, the trigger push rod transmits the driving force generated by the nail pushing slider to the circular tube push rod, and the circular tube push rod acts on the trigger to activate the surgical instrument.

[0027] In conjunction with the second aspect of the present application, in an optional implementation manner, the first transmission assembly further includes:

[0028] A button slider, the distal end of which contacts the proximal end of the circular tube push rod, the button slider transmits the pushing force generated by the pin push slider to the trigger, and the trigger is electrically connected to the control component to activate the surgical instrument.

[0029] In conjunction with the second aspect of the present application, in an optional embodiment, the button slider is provided with a first elastic member, and the first elastic member can contact the trigger during the movement of the button slider, so that the trigger activates the surgical instrument.

[0030] In conjunction with the second aspect of the present application, in an optional embodiment, the surgical instrument further includes:

[0031] A second elastic member connected to the first transmission assembly;

[0032] When the nail magazine assembly is separated from the nail magazine seat, the first transmission assembly moves toward its distal end and to its original position under the elastic force of the second elastic member.

[0033] In conjunction with the second aspect of the present application, in an optional implementation, the trigger slider is provided with a second bayonet portion, the distal end of the trigger push rod is provided with a second buckle portion, and the second buckle portion matches the second bayonet portion, so that the trigger push rod and the trigger slider move synchronously;

[0034] A third bayonet portion is provided at the distal end of the circular tube push rod, and a third buckle portion is provided at the proximal end of the trigger push rod. The third buckle portion matches the third bayonet portion, so that the circular tube push rod and the trigger push rod move synchronously.

[0035] In conjunction with the second aspect of the present application, in an optional embodiment, the surgical instrument further includes a prompt component, and when the trigger triggers and activates the surgical instrument, the prompt component presents prompt information.

[0036] The nail magazine assembly for surgical instruments provided in the embodiment of the present application changes the size or position of the nail pushing slider so that the nail magazine assembly can push the first transmission assembly to move a certain distance when installed on the nail magazine seat, thereby activating the surgical instrument. When the nail magazine body is used or empty, the nail magazine assembly cannot push the first transmission assembly when it is installed on the nail magazine seat, and the surgical instrument cannot be activated or operated, thereby identifying the empty nail magazine or the used nail magazine, greatly reducing the surgical risks caused by the empty nail magazine or the used nail magazine.

[0037] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0039] Figure 1 A schematic diagram of the overall structure of the surgical instrument provided in an embodiment of the present application;

[0040] Figure 2a A schematic diagram of a portion of the structure of a nail cartridge assembly installed on a nail cartridge seat in a surgical instrument provided in an embodiment of the present application;

[0041] Figure 2b A schematic diagram of a portion of the structure of a surgical instrument provided in an embodiment of the present application without a staple cartridge assembly installed;

[0042] Figure 3a A schematic diagram of the structure of a surgical instrument provided in an embodiment of the present application in which a staple cartridge assembly is not installed on a staple cartridge seat;

[0043] Figure 3b A schematic diagram of a state in which a staple cartridge assembly in a surgical instrument provided in an embodiment of the present application is installed on a staple cartridge seat;

[0044] Figure 4 A schematic diagram of the structure of a handle assembly of a surgical instrument provided in an embodiment of the present application;

[0045] Figure 5 A schematic diagram of the three-dimensional structure of a trigger push rod in a nail magazine assembly provided in an embodiment of the present application;

[0046] Figure 6 A schematic diagram of the three-dimensional structure of a round tube push rod in a surgical instrument provided in an embodiment of the present application;

[0047] Figure 7 A schematic diagram of the overall structure of a staple cartridge assembly for a surgical instrument provided in an embodiment of the present application;

[0048] Figure 8 A top view of a staple cartridge body in a staple cartridge assembly for a surgical instrument provided in an embodiment of the present application;

[0049] Fig. 9 for Figure 8 The enlarged view of point A in the middle;

[0050] Fig.10 A schematic structural diagram of a nail pushing slider in a nail magazine assembly of a surgical instrument provided in an embodiment of the present application.

[0051] Reference numerals:

[0052] 1. End actuator;

[0053] 10. Nail magazine assembly; 11. Nail magazine body; 111. Slide groove; 112. First buckle portion; 12. Nail-pushing slider; 121. First bayonet portion;

[0054] 13. Jaw assembly; 131. Nail magazine seat; 132. Nail support seat;

[0055] 14. second elastic member; 15. push blade;

[0056] 2. casing assembly; 21. outer casing;

[0057] 3. Handle assembly; 30. First transmission assembly; 31. Trigger slider; 311. Second bayonet portion; 32. Trigger push rod; 321. Second buckle portion; 33. Round tube push rod; 331. Third bayonet portion; 332. Push rod flange; 34. Key slider; 341. First elastic member; 35. Control assembly; 351. Trigger; 36. Housing; 37. Key. DETAILED DESCRIPTION

[0058] In order to make the technical solutions and beneficial effects of the present invention more clearly understandable, the following is a detailed description by listing specific embodiments. The drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application belongs.

[0059] In the description of the present invention, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of simplified description of the present invention, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be understood as a limitation to the present invention.

[0060] In the present invention, the terms "first" and "second" are only used for the purpose of clear description and cannot be understood as the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly include at least one of the features. In the description of the present invention, "multiple" means at least two, such as two, three, etc.; "several" means at least one, such as one, two, three, etc., unless otherwise clearly and specifically defined.

[0061] In the present invention, unless otherwise clearly defined, the terms "install", "connect", "connect", "fix", "set", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the present invention, unless otherwise clearly defined, a first feature being “on”, “above”, “above”, “below”, “below”, “below” or “below” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact with each other through an intermediate medium. Moreover, a first feature being “on”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0063] like Figure 1 and Figure 4 As shown, an embodiment of the present invention provides a surgical instrument, for example, a stapler. The stapler is a commonly used minimally invasive surgical instrument. The following embodiments are described using the stapler as an example. The stapler includes an end actuator assembly 1, a sleeve assembly 2 and a handle assembly 3. The two ends of the sleeve assembly 2 are respectively connected to the end actuator assembly 1 and the handle assembly 3.

[0064] The handle assembly 3 includes a housing 36, a button 37, a second transmission assembly (not shown in the figure), a control assembly 35 and a drive assembly (not shown in the figure). The button 37, the control assembly 35 and the drive assembly are installed in the housing 36. The two ends of the second transmission assembly are respectively connected to the drive assembly and the end actuator assembly 1. The control assembly 35 is electrically connected to the drive assembly and the button 37. The operator sends an execution instruction to the control assembly 35 through the button 37. The drive assembly drives the second transmission assembly to perform an action based on the instruction of the control assembly 35, and drives the end actuator assembly 1 to further perform cutting, anastomosis and other actions. As an example, the drive assembly includes a motor and a power module, and the motor and the power module are both located in the housing 36.

[0065] One end of the sleeve assembly 2 is connected to the shell 36. The sleeve assembly 2 includes an outer sleeve 21. The second transmission assembly is inserted into the outer sleeve 21. The end execution assembly 1 follows the second transmission assembly to perform cutting, anastomosis and other actions under the driving force of the motor.

[0066] The end effector assembly 1 includes a jaw assembly 13 and a staple cartridge assembly 10. The jaw assembly 13 includes a staple cartridge seat 131 and an anvil seat 132 pivotally connected to the staple cartridge seat 131. The staple cartridge seat 131 is used to operably support the staple cartridge assembly 10 therein. The anvil seat 132 has a selective open position and a closed position. The anvil seat 132 cooperates with the staple cartridge seat 131 and the staple cartridge assembly 10 to clamp or loosen biological tissue.

[0067] The end execution assembly 1 also includes a push blade 15. When the nail support 132 cooperates with the nail magazine seat 131 and the nail magazine assembly 10 to clamp the biological tissue, the second transmission assembly drives the push blade 15 to cut the biological tissue under the driving force of the motor.

[0068] It should be noted that the second transmission assembly includes multiple transmission mechanisms, which can respectively drive the push blade 15, the nail support 132 and other components to perform actions. The specific implementation principle of this part is described in detail in the relevant patents and will not be elaborated here.

[0069] According to the related technology, when an empty nail magazine or a used nail magazine is identified by mechanical means, the motor receives the operation instruction sent by the control component 35, and the second transmission component is driven by the motor to act. However, based on the configuration of the mechanical structure, the second transmission component cannot drive the end execution component 1 to perform the action, thereby identifying the nail magazine as an empty nail magazine or a used nail magazine. Repeated operations like this may cause damage to the stapler, affecting the operating accuracy of the stapler.

[0070] Based on this, the stapler provided in the embodiment of the present application, when an empty stapler or a used stapler is installed in the stapler holder 131, the stapler will not be activated and the second transmission assembly will not operate, which can greatly reduce unnecessary operations on the stapler, not only ensuring the operation accuracy of the stapler, but also increasing the service life of the stapler.

[0071] It should be noted that if Figure 1 As shown, the end close to the handle assembly 3 is the proximal end, and the end close to the end execution assembly 1 is the distal end; or the end close to the operator is the proximal end, and the end away from the operator is the distal end, and the operator holds the handle of the handle assembly 3.

[0072] Specifically, Figure 2a , Figure 2b , Figure 3a and Figure 3b As shown, the stapler further includes a first transmission assembly 30 , the distal end of which is close to the proximal end of the staple cartridge seat 131 , and the control assembly 35 includes a trigger 351 , which is located at the proximal end of the first transmission assembly 30 . Figure 2b and Figure 3a A schematic diagram showing a state in which the staple cartridge assembly 10 is not installed in the staple cartridge seat 131 is shown. Figure 2a and Figure 3b The schematic diagram shows the state where the nail magazine assembly 10 is installed in the nail magazine seat 131.

[0073] Figure 3b When the staple cartridge body 11 is filled with staples, when the staple cartridge assembly 10 is installed in the staple cartridge seat 131, the staple push slider 12 can contact the first transmission assembly 30 and push the first transmission assembly 30 along the first direction. Figure 3b The arrow s1 direction shown in the figure moves toward the proximal end, and the first transmission assembly 30 can contact the trigger 351 after moving a certain distance. The trigger 351 triggers the control assembly 35 and activates the stapler, so that the stapler can be further operated.

[0074] In an optional embodiment, before the nail magazine assembly 10 is installed on the nail magazine seat 131, the control assembly 35 and the button 37 are electrically disconnected. It can be understood that when the operator presses the button 37, the control assembly 35 cannot receive instructions, and thus the end execution assembly 1 cannot perform cutting, stapling and other actions.

[0075] When the staple magazine assembly 10 filled with staples is installed in the staple magazine seat 131, the stapler slider 12 pushes the first transmission assembly 30 to move and act on the trigger 351. The trigger 351 is triggered to enable the control assembly 35 to be electrically connected to the button 37, that is, to activate the stapler. When the operator presses the button 37, the control assembly 35 can receive the operation instruction issued by the button 37, and the control assembly 35 sends an execution instruction to the motor, so that the motor drives the second transmission assembly to drive the end execution assembly 1 to perform the action.

[0076] When a used staple cartridge assembly 10 or an empty staple cartridge assembly 10 is installed in the staple cartridge seat 131, the stapler push slider 12 cannot contact the first transmission assembly 30, and thus cannot trigger the trigger 351, thereby failing to activate the stapler. The control assembly 35 and the button 37 are still electrically disconnected, and the stapler cannot perform any action.

[0077] In another optional embodiment, before the staple cartridge assembly 10 is installed on the staple cartridge seat 131, the control assembly 35 is electrically connected to the button 37, but the control assembly 35 needs to receive two electrical signals at the same time to issue a command, namely, a first electrical signal issued by the button 37 and a second electrical signal issued after the trigger 351 is triggered. Therefore, before the stapler is activated, no action can be performed by pressing the button 37 alone.

[0078] When the stapler assembly 10 filled with staples is installed in the stapler seat 131, the stapler-pushing slider 12 pushes the first transmission assembly 30 to move and acts on the trigger 351, which triggers and sends out a second electrical signal. When the control assembly 35 receives the first electrical signal sent by the button 37, the control assembly 35 simultaneously receives the first electrical signal and the second electrical signal, activates the stapler, and then the control assembly sends instructions to the motor based on the first electrical signal, and the motor drives the end actuator assembly 1 to perform the action.

[0079] When a used nail magazine assembly 10 or an empty nail magazine assembly 10 is installed on the nail magazine seat 131, the nail pushing slider 12 does not contact the first transmission assembly 30, and the trigger cannot be triggered, so the control assembly 35 cannot receive the second electrical signal. Although the control assembly 35 can receive the first electrical signal, the stapler is not activated and cannot perform the action.

[0080] Furthermore, the stapler further includes a prompt component (not shown in the figure). When the trigger 351 triggers and activates the stapler, the control component 35 sends a prompt message based on the received second electrical signal.

[0081] As an example, a lamp bead is embedded in the housing 36, and the state of the staple cartridge assembly 10 installed in the staple cartridge seat 131 is prompted to the operator by the change of the lamp bead. As another example, when the lamp bead is green, it indicates that the staple cartridge body 11 is full of staples, and when the lamp bead is yellow, red or off, it indicates that the staple cartridge body 11 is not filled with staples or is not full of staples. It should be noted that the meaning represented by the color of the lamp bead can be set according to needs, and the embodiment of the present application is not limited thereto.

[0082] Also as an example, the prompt component is a sound prompt member, and when the stapler is activated, the sound prompt member emits a first prompt sound, and when the stapler is not activated, the sound prompt member does not emit a sound.

[0083] The prompting method of the prompting component in the embodiment of the present application may also be other methods, which are not limited in the embodiment of the present application.

[0084] The present application also provides a method for controlling a stapler, including the following:

[0085] When the control component 35 receives the second electrical signal sent by the trigger 351 and receives the first electrical signal sent by the button 37, the control component 35 sends a command to the motor so that the motor drives the second transmission component to drive the end actuator component 1 to perform an action.

[0086] It should be noted that during the use of the staple magazine assembly 10, the staple push slider 12 slides toward the distal end to push the staples out to achieve the suturing of biological tissue. Therefore, after the staple magazine assembly 10 is used, the position of the staple push slider 12 changes. When the staple magazine assembly 10 is installed on the staple magazine seat 131, the proximal end of the staple push slider 12 cannot contact the distal end of the first transmission assembly 30, the first transmission assembly 30 will not move, the stapler is in an inactive state, and the stapler cannot be operated.

[0087] In an optional embodiment, the trigger 351 is a micro switch. When the first transmission component 30 acts on the trigger 351 and causes the trigger 351 to displace to a critical point, it can trigger the control component 35 to achieve electrical connection with the trigger 351, and then send out an electrical signal. The micro switch has high sensitivity and a compact appearance, which can improve the sensitivity of the stapler and reduce the structural complexity of the stapler at the same time, thereby improving the intelligence of the stapler.

[0088] Of course, the trigger 351 in the present application is not limited to a micro switch. The trigger 351 can also be a photoelectric sensor, a Hall element, a pressure sensor, etc.

[0089] Figure 2a Schematic diagram of the state after the nail magazine assembly 10 is installed on the nail magazine seat 131 is shown in FIG. Figure 2b1 shows a schematic diagram of a state where the staple cartridge assembly 10 is not installed on the staple cartridge seat 131. After the staple cartridge assembly 10 is removed from the staple cartridge seat 131, the first transmission assembly 30 moves to the distal end under the action of the second elastic member 14 and moves to the original position, so that when the staple cartridge assembly 10 is installed on the staple cartridge seat 131 again, it can recognize an empty staple cartridge or a used staple cartridge again. The second elastic member 14 is preferably a compression spring, but is not limited thereto.

[0090] In an alternative embodiment, if Figure 2a and Figure 4 As shown, the first transmission assembly 30 includes a trigger slider 31, a trigger push rod 32 and a round tube push rod 33. When the staple cartridge body 11 is filled with staples and the staple cartridge assembly 10 is mounted on the staple cartridge seat 131, the proximal end of the staple push slider 12 contacts the distal end of the trigger slider 31 and can push the trigger slider 31 to move, and the driving force generated by the staple push slider 12 is transmitted to the trigger push rod 32 via the trigger slider 31, and the trigger push rod 32 then transmits the driving force generated by the staple push slider 12 to the round tube push rod 33, and the round tube push rod 33 moves and acts on the trigger 351 and triggers the trigger 351.

[0091] Figure 1 The overall structure of the stapler is shown in FIG. The end actuator assembly 1 can swing relative to the sleeve assembly 2 , and the sleeve assembly 2 can rotate relative to the handle assembly 3 .

[0092] Based on this, Figure 2b and Figure 5 As shown, the trigger slider 31 is provided with a second bayonet portion 311, and the distal end of the trigger push rod 32 is provided with a second buckle portion 321, and the second buckle portion 321 matches the second bayonet portion 311, so that the trigger push rod 32 moves synchronously with the trigger slider 31. The trigger push rod 32 is a sheet-like structure, and the second bayonet portion 311 matches the second buckle portion 321, which can prevent the trigger push rod 32 from being separated from the trigger slider 31 when the end actuator 1 performs a swinging action relative to the sleeve assembly 2, and further prevent the end actuator 1 from affecting the recognition effect of an empty nail magazine or a used nail magazine when performing a swinging action.

[0093] As an example, the second buckle portion 321 is a bent portion formed by bending the distal end of the trigger push rod 32, and the second bayonet portion 311 is a cutout provided on the trigger slider 31, and the bent portion is inserted into the cutout so that the trigger slider 31 and the trigger push rod 32 can move synchronously.

[0094] like Figure 4 and Figure 6As shown, the distal end of the round tube push rod 33 is provided with a third bayonet portion 331, and the proximal end of the trigger push rod 32 is provided with a third buckle portion, and the third buckle portion matches the third bayonet portion 331, so that the round tube push rod 33 and the trigger push rod 32 move synchronously. At least part of the area of ​​the round tube push rod 33 is located in the outer sleeve 21, and the proximal end of the round tube push rod 33 is located in the housing 36 of the handle assembly 3. When the sleeve assembly 2 rotates relative to the handle assembly 3, the round tube push rod 33 rotates synchronously with the outer sleeve 21. The third buckle portion matches the third bayonet portion 331, so that the round tube push rod 33 drives the trigger push rod 32 to rotate synchronously.

[0095] As an example, Figure 6 As shown, the third bayonet portion 331 is a notch extending along the axial direction of the round tube push rod 33, and the third buckle portion is the proximal end of the trigger push rod 32. The proximal end of the sheet-shaped trigger push rod 32 is inserted into the notch so that the trigger push rod 32 can follow the round tube push rod 33 to make rotational movement.

[0096] The proximal end of the circular tube push rod 33 is connected with a push rod flange 332 , and the push rod flange 332 is connected to the housing 36 , so that the sleeve assembly 2 can rotate relative to the handle assembly 3 .

[0097] In an alternative embodiment, if Figure 4 As shown, the first transmission component 30 also includes a button slider 34, the distal end of which is connected to the push rod flange 332. When the push rod flange 332 moves toward the proximal end under the pushing force of the pin push slider 12, the button slider 34 can contact the trigger 351 and enable the trigger 351 to be electrically connected to the control component 35, thereby triggering the trigger 351.

[0098] Furthermore, the key slider 34 is provided with a first elastic member 341, and the first elastic member 341 can contact the trigger 351 during the movement of the key slider 34 and trigger the trigger 351. The first elastic member 341 is a spring connected to the key slider 34, but is not limited thereto.

[0099] like Figure 7 As shown, the nail magazine assembly 10 provided in the embodiment of the present application includes a nail magazine body 11 and a nail pushing slider 12. The nail magazine body 11 is filled with nails, and the nail pushing slider 12 can slide relative to the nail magazine body 11. When the nail magazine body 11 is full of nails, the nail pushing slider 12 protrudes from the nail magazine body 11.

[0100] It can be understood that when the stapler body 11 is filled with staples and the stapler assembly 10 is installed on the stapler seat 131, the stapler pusher slider 12 protruding from the stapler body 11 can push the first transmission assembly 30 to move proximally and activate the stapler. When the stapler is activated, the first transmission assembly 30 moves distally under the action of the motor and acts on the stapler pusher slider 12, and the stapler pusher slider 12 moves along the first direction, i.e. Figure 8 Move in the direction of arrow s1 shown in the figure to push out the staples in the staple cartridge body 11, where the staples are used to suture biological tissues.

[0101] When the stapler body 11 is not filled with staples or has no staples, and the stapler assembly 10 is installed on the stapler seat 131, the stapler-pushing slider 12 cannot contact the first transmission assembly 30, and of course cannot push the first transmission assembly 30 to move. Therefore, the stapler cannot be activated, and the stapler cannot perform the next operation, thereby being able to identify an empty stapler or a used stapler, greatly reducing the surgical risks caused by using an empty stapler or a used stapler.

[0102] like Figure 8 , Fig. 9 and Fig.10 As shown, the staple cartridge body 11 has at least one slide groove 111, the slide groove 111 extends along a first direction, the staple pusher slider 12 is slidably connected to the slide groove 111, and the staple pusher slider 12 moves along the first direction under the action of an external force to push out the staples. As an example, Fig. 9 The four slide grooves 111 of the nail magazine body 11 are shown in FIG. Fig.10 It is shown in the figure that the nail pushing slider 12 includes four sliding plates, and the four sliding plates are matched with four sliding grooves 111 respectively.

[0103] Furthermore, a first snap-in portion 121 is provided on the side wall of the nail pushing slider 12, and a first buckle portion 112 is provided on the nail magazine body 11. The first buckle portion 112 is located on the inner wall of the slide groove 111. When the nail magazine body 11 is full of nails, the position of the nail pushing slider 12 in the slide groove 111 can make the first buckle portion 112 match the first snap-in portion 121. The clamping connection between the first buckle portion 112 and the first buckle portion 121 can greatly reduce the movement of the nail pushing slider 12 due to external force acting on it, resulting in erroneous operation.

[0104] As an example, the first bayonet portion 121 is a notch provided on the outer wall of the nail pushing slider 12, and the first buckle portion 112 is a protrusion provided on the nail magazine body 11. The protrusion and the notch are arc-shaped structures, which can improve the smoothness of the sliding of the nail pushing slider 12 when the first transmission assembly 30 acts on the nail pushing slider 12.

[0105] It should be noted that the force exerted by the first transmission assembly 30 on the nail-pushing slider 12 under the action of the motor is much greater than the blocking force generated by the first buckle portion 112 matching the first bayonet portion 121 .

[0106] It should be understood that the above embodiments are exemplary and are not intended to include all possible implementations included in the claims. Various modifications and changes may be made on the basis of the above embodiments without departing from the scope of the present disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form other embodiments of the present application that may not be explicitly described. Therefore, the above embodiments only express several implementations of the present application and do not limit the scope of protection of the patent of this application.

Claims

1. A surgical instrument, characterized in that: The surgical instrument comprises: A nail magazine assembly (10), the nail magazine assembly (10) comprising: A staple cartridge body (11), inside of which staples can be installed; A nail-pushing slider (12) which can slide relative to the nail magazine body (11); A nail magazine seat (131), used for operably supporting the nail magazine assembly (10) located therein; A first transmission assembly (30), the distal end of which is close to the proximal end of the nail magazine seat (131); a control assembly (35), which comprises a trigger (351), and the trigger (351) is located at the proximal end of the first transmission assembly (30); When the staple cartridge body (11) is filled with the staples, the staple pushing slider (12) protrudes from the staple cartridge body (11), so that when the staple cartridge assembly (10) is mounted on the staple cartridge seat (131), the staple pushing slider (12) can push the first transmission assembly (30) to move toward the proximal end; When the staple cartridge body (11) is not filled with the staples or has no staples, when the staple cartridge assembly (10) is mounted on the staple cartridge seat (131), the staple pushing slider (12) cannot push the first transmission assembly (30) to move; When the nail magazine assembly (10) is installed on the nail magazine seat (131), The proximal end of the nail-pushing slider (12) contacts the distal end of the first transmission assembly (30) and is capable of pushing the first transmission assembly (30) to move toward its proximal end, and the first transmission assembly (30) acts on the trigger (351), so that the trigger (351) activates the surgical instrument; When the proximal end of the nail-pushing slider (12) does not contact the distal end of the first transmission assembly (30), the surgical instrument is in an inactive state.

2. The surgical instrument according to claim 1, characterized in that The staple cartridge body (11) has at least one slide groove (111), the slide groove (111) extending along a first direction, the staple pushing slider (12) being slidably connected to the slide groove (111), and the staple pushing slider (12) moves along the first direction under the action of an external force to push the staples out.

3. The surgical instrument according to claim 2, characterized in that The side wall of the nail-pushing slider (12) is provided with a first snap-fit ​​portion (121), and the nail magazine body (11) is provided with a first snap-fit ​​portion (112), the first snap-fit ​​portion (112) is located on the inner wall of the slide groove (111), and the first snap-fit ​​portion (121) matches the first snap-fit ​​portion (112); When the staple cartridge body (11) is filled with the staples, the first buckle portion (112) is engaged with the first bayonet portion (121) to prevent the staple-pushing slider (12) from moving relative to the slide groove (111).

4. The surgical instrument according to claim 1, characterized in that The first transmission assembly (30) comprises: A trigger slider (31), wherein the proximal end of the pin-pushing slider (12) can contact the distal end of the trigger slider (31); A trigger push rod (32), wherein the driving force generated by the nail pushing slider (12) is transmitted to the trigger push rod (32) via the trigger slider (31); A circular tube push rod (33), wherein the trigger push rod (32) transmits the pushing force generated by the nail pushing slider (12) to the circular tube push rod (33), and the circular tube push rod (33) acts on the trigger (351) to activate the surgical instrument.

5. The surgical instrument according to claim 4, characterized in that The first transmission assembly (30) further comprises: A button slider (34), the distal end of the button slider (34) contacts the proximal end of the round tube push rod (33), the button slider (34) transmits the pushing force generated by the nail pushing slider (12) to the trigger (351), and the trigger (351) activates the surgical instrument.

6. The surgical instrument according to claim 5, characterized in that The button slider (34) is provided with a first elastic member (341), and the first elastic member (341) can contact the trigger (351) when following the movement of the button slider (34), so that the trigger (351) activates the surgical instrument.

7. The surgical instrument according to claim 1, characterized in that: Also includes: A second elastic member (14) connected to the first transmission assembly (30); When the nail magazine assembly (10) is separated from the nail magazine seat (131), the first transmission assembly (30) moves toward its distal end and to its original position under the elastic force of the second elastic member (14).

8. The surgical instrument according to claim 4, characterized in that The trigger slider (31) is provided with a second bayonet portion (311), and the distal end of the trigger push rod (32) is provided with a second buckle portion (321), and the second buckle portion (321) matches the second bayonet portion (311), so that the trigger push rod (32) and the trigger slider (31) move synchronously; A third bayonet portion (331) is provided at the distal end of the circular tube push rod (33), and a third buckle portion is provided at the proximal end of the trigger push rod (32), wherein the third buckle portion matches the third bayonet portion (331), so that the circular tube push rod (33) and the trigger push rod (32) move synchronously.

9. The surgical instrument according to claim 1, characterized in that The surgical instrument further comprises a prompt component, which presents prompt information when the trigger (351) triggers and activates the surgical instrument.

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