Manual anastomat capable of preventing mistaken touch

Abstract

The mistaken touch prevention manual anastomat comprises a jaw assembly, a cutter bar, an outer sleeve and a handheld part, the jaw assembly is arranged at the front end of the outer sleeve, and the cutter bar is arranged in the outer sleeve in a penetrating mode; a closing control assembly is arranged in the handheld part to drive the outer sleeve to drive the jaw assembly to be opened and closed through axial movement, and a percussion control assembly is arranged in the handheld part to drive the cutter bar to axially move in the jaw assembly. A control handle is connected into the handheld part in a pivoted mode through a connecting shaft, and the control handle is selectively in transmission connection with the closing control assembly or the percussion control assembly through a switching mechanism. According to the scheme, the control handle is used for being connected with the closing control assembly and the percussion control assembly, the cutter bar can only stretch out in the jaw closing state, the jaw assembly can only be opened when the cutter bar retracts into the outer sleeve, the cutter bar is prevented from stretching out in the opening state of the jaw assembly, and use safety is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a manual stapler capable of preventing accidental touch. Background Art

[0002] A stapler is a commonly used medical device that can clamp tissue to complete incision and anastomosis. Its distal actuator clamps the tissue through the jaw assembly, and then uses the internal staple cartridge and knife rod to achieve tissue separation and anastomosis. It is easy and quick to operate, greatly improving surgical efficiency.

[0003] Conventional staplers, such as those disclosed in publication number CN115813472A, include a gun body assembly and a jaw assembly, wherein a cutting bar is disposed within the jaw assembly. The operating principle is that the jaws close to clamp tissue, and then the bar moves and extends to complete the cutting. Therefore, the control mechanism for the jaw assembly and the bar are two independent control mechanisms, both of which are achieved by rotating a handle. Specifically, a closing handle and a firing handle are disposed within the firing section to control the closing of the jaw assembly and the cutting of the bar, respectively. However, the structures, drive schemes, and placement of the two handles are very similar, which can easily lead to users accidentally touching the handles during use, resulting in operational errors.

[0004] How to ensure that the knife rod is fired and cut when the jaws are closed is a problem that needs to be solved urgently. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a manual stapler that can prevent accidental contact.

[0006] The purpose of the present invention is achieved through the following technical solutions: The anti-accidental-touch manual stapler comprises a jaw assembly, a knife rod, an outer sleeve, and a handheld portion. The jaw assembly is arranged at the front end of the outer sleeve, the knife rod is passed through the outer sleeve, a closing control assembly is arranged in the handheld portion to drive the outer sleeve to drive the jaw assembly to open and close by axial movement, and a firing control assembly is arranged in the handheld portion to drive the knife rod to move axially in the jaw assembly; a control handle is pivotally connected to the handheld portion through a connecting shaft, and the control handle can be selectively connected to the closing control assembly or the firing control assembly through a switching mechanism, and the closing control assembly includes a closing connecting plate , locking connecting piece, the center of the closed connecting plate is provided with a recessed portion extending backward, and its front end, rear end and bottom end are respectively convex relative to the center, the front end of the closed connecting plate is transmission-connected with the tail end of the outer sleeve, the bottom end of the closed connecting plate is pivotally connected to the connecting shaft through a first torsion spring, and a driving protrusion matching the concave portion is convexly provided on one side of the inner end of the control handle, and the control handle is pivoted to make the driving protrusion clamped in the concave portion to drive the closed connecting plate to rotate counterclockwise around its bottom end, and the counterclockwise rotation of the closed connecting plate drives the outer sleeve to move axially forward synchronously until the jaws are driven The assembly is closed; the locking connection comprises a release knob and a locking rod, the inner end of the release knob is rotatably built into the hand-held part through a second torsion spring, the front side of the release knob is convexly provided with a first end, and the rear side is concavely provided with a notch, the locking rod extends axially and is sleeved with a first spring that drives it to move axially forward, the front end of the locking rod is straight and slides into contact with the rear side wall of the release knob to drive the first end to slide into contact with the rear end of the closing connecting plate, and when the closing connecting plate is rotated counterclockwise to its limit position, the front end of the locking rod slides into the notch to lock the release knob, and at the same time, the first end and the rear end of the closing connecting plate The end abuts against the closed connecting plate to lock the jaw assembly so that the jaw assembly remains in a closed state; the firing control assembly includes a firing rack fixed to the tail end of the knife rod, and the control handle pivots to push the firing rack axially forward, and the tail end of the locking rod is tilted up and opposite to the tail end of the firing rack. When the firing rack moves axially backward to its initial position, the firing rack abuts against the tail end of the locking rod and drives it to move backward to unlock the release knob, and the release knob rotates in the opposite direction to reset to unlock the closed connecting plate, and the closed connecting plate rotates clockwise and drives the outer sleeve to move synchronously axially backward to drive the jaw assembly to open.

[0007] Preferably, a second end that bulges outward is formed on the top of the rear side of the release knob, and a slot is formed on the top surface of the second end. A limit block that matches the slot is provided above the release knob, and the locking rod drives the release knob to rotate counterclockwise until the limit block engages with the slot.

[0008] Preferably, a latch is pivotally provided below the second end, and the rear side of the latch abuts against a second spring that drives it to pivot counterclockwise toward the release knob, so that when the release knob is rotated counterclockwise to its limit position, the latch pivots and abuts against the bottom of the second end to lock the release knob; the interior of the latch is hollow to allow the front end of the locking rod to pass through, and the front end of the locking rod is formed into a hook shape to hook the top of the latch, and when the locking rod moves axially backward, the latch is driven to pivot clockwise to separate from the second end to unlock the release knob.

[0009] Preferably, the rear end of the closed connecting plate and the end face of the first end are matching inclined surfaces. When the release knob is locked, the rear end face of the closed connecting plate abuts against the end face of the first end, and the outer end of the release knob protrudes outward from the hand-held portion to form a handle.

[0010] Preferably, an axially extending guide sleeve is provided in the hand-held part, the locking rod is passed through the guide sleeve, one end of the first spring is fixed on the locking rod, and the other end abuts against the inner wall of the guide sleeve to drive the locking rod to move axially forward.

[0011] Preferably, a fixing seat is fixed to the tail end of the outer sleeve, and a return spring is sleeved on the outer sleeve. The two ends of the return spring abut between the front end of the fixing seat and the inner wall of the shell of the hand-held part to drive the outer sleeve to move axially backward; the bottom pivot of the fixing seat is connected to a connecting rod, and the other end of the connecting rod is connected to the front end pivot of the closed connecting plate.

[0012] Preferably, the switching mechanism includes a reset fork and a firing safety, a slot is provided on the front side of the inner end of the control handle, the reset fork is inserted into the slot, and a third spring is abutted between the inner end of the reset fork and the bottom of the slot, and a socket is provided in the firing rack, the reset fork pivots synchronously with the control handle, and is inserted into the socket under the elastic force of the third spring to lock the firing rack; the firing safety is radially inserted in the driving protrusion, and at least one end of the firing safety protrudes outward On the hand-held part, a driving groove is provided on the side wall of the firing safety, and the inner walls of the driving groove are inclined on both sides to form a driving inclined surface. A connecting protrusion is convexly provided on the proximal side wall of the reset fork, and the connecting protrusion is embedded in the driving groove and slidably abuts against the driving inclined surface. By pressing the firing safety to move radially, the driving inclined surface synchronously presses the connecting protrusion, so that the reset fork retracts until it is separated from the socket to unlock the firing rack. At this time, the control handle can be switched to connect to the firing control assembly.

[0013] Preferably, the firing control assembly includes a firing paddle, which is arranged at the top of the inner end of the control handle, and the interior of the firing paddle is hollow so that the reset fork can pass through, and a tooth portion is formed at the bottom of the firing rack. When the firing rack is unlocked, the control handle drives the firing paddle to pivot and shift the teeth one by one to drive the firing rack to move axially forward.

[0014] Preferably, the firing control assembly further includes a retracting pull tab, a reset button, a reset rod and a step pin, a group of the step pins being fixed at intervals on the side of the firing rack, a group of inclined holes being obliquely provided on the retracting pull tab, and the step pins being passed through one of the inclined holes one by one, the proximal end of the firing rack having a first strip hole extending axially, the proximal end of the retracting pull tab having a second strip hole perpendicular to the first strip hole, the reset rod radially passing through the first strip hole and the second strip hole, an axially extending strip slot being provided on the hand-held shell, the reset button being respectively fixed on the two ends of the reset rod protruding from the strip slot, when the reset button is axially pulled to move along the first strip hole, the retracting pull tab can be driven to move downward synchronously along the inclined hole to drive the top of the firing paddle to separate from the tooth portion of the firing rack; when the reset button is axially pulled to move along the strip slot, the firing rack can be pulled to move synchronously axially until its initial position.

[0015] Preferably, a strip groove is provided in the middle of the bottom of the firing rack along its extension direction, and the width of the strip groove matches the top of the reset fork.

[0016] The beneficial effects of the present invention are mainly reflected in: 1. A recess with an opening is provided on the closing connecting plate to cooperate with the control handle to form a detachable connection relationship, so that the control handle can only drive the closing connecting plate to rotate in one direction by pivoting. On the one hand, such a connection relationship can complete the closing operation of the jaw assembly in one step, and at the same time, a locking connection is provided to lock the closing connecting plate to lock the closed state of the jaw assembly. On the other hand, such a connection relationship requires that the control handle must first be connected to the closing control assembly, and can only be separated from the closing connecting plate after the jaw assembly is closed, and then connected to the firing control assembly through the switching mechanism, and the closing control assembly needs to be unlocked by resetting the firing rack. Through such a connection sequence, the knife rod can only be extended in the jaw closed state, and the jaw assembly can only be opened when the knife rod is retracted in the outer sleeve, so as to prevent the knife rod from extending when the jaw assembly is opened, thereby ensuring safety in use; 2. A matching inclined surface is formed between the first end and the rear end of the closed connecting plate to form a surface contact between the two, thereby enhancing the effectiveness of the abutment between the two and preventing them from disengaging. A matching latch is provided on the rear side of the release knob, and the latch is used to press against the second end to lock the release knob, forming a hard limit for the release knob, further enhancing the locking of the release knob and ensuring the locking effect of the closed connecting plate; 3. The protrusion of the release knob is set to be a handle protruding from the handheld part, so that the user can manually turn the release button to prevent the closing control component from being stuck between the closing connecting plate and the release knob and being unable to retract. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The technical solution of the present invention will be further described below with reference to the accompanying drawings: Figure 1 : Schematic diagram of the internal structure of an embodiment of the present invention in an initial state; Figure 2 : Schematic diagram of the internal structure of the jaw assembly when the control handle drives the jaw assembly in an embodiment of the present invention; Figure 3 : Figure 2 A magnified schematic diagram of part A; Figure 4 : Schematic diagram of the internal structure of the control handle when switching to connect to the firing control component in an embodiment of the present invention; Figure 5 : Schematic diagram of the internal structure of the control handle driving the axial movement of the knife rod in an embodiment of the present invention; Figure 6 : Schematic diagram of the internal structure of the firing rack when it is reset in an embodiment of the present invention; Figure 7 : Schematic diagram of a firing rack in an embodiment of the present invention; Figure 8 : Schematic diagram of a release knob in an embodiment of the present invention; Figure 9 : A cross-sectional view of the connection between the control handle and the switching mechanism in an embodiment of the present invention. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0019] In the description of the scheme, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience and simplification of 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. Therefore, they should not be understood as limitations on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Moreover, in the description of the scheme, with the operator as a reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0020] like Figures 1 to 9As shown, the present invention discloses an anti-accidental-touch manual stapler, comprising a jaw assembly 1, a knife rod 2, an outer sleeve 3, and a handheld portion 4. The jaw assembly 1 is arranged at the front end of the outer sleeve 2, the knife rod 2 is passed through the outer sleeve 3, a closing control assembly is provided in the handheld portion 4 to drive the outer sleeve 3 to drive the jaw assembly 1 to open and close by axial movement, and a firing control assembly is provided in the handheld portion 4 to drive the knife rod 2 to move axially in the jaw assembly 1; a control handle 5 is pivotally connected to the handheld portion 4 through a connecting shaft 401, and the control handle 5 is switched The mechanism can be selectively connected to the closing control component or the firing control component in a transmission manner. The closing control component includes a closing connecting plate 601 and a locking connecting piece. The center of the closing connecting plate 601 is provided with a recessed portion 602 with an opening extending backward, and its front end, rear end and bottom end are respectively convex relative to its center. The front end of the closing connecting plate 601 is connected to the tail end of the outer sleeve 3 in a transmission manner. The bottom end of the closing connecting plate 601 is pivotally connected to the connecting shaft 401 through a first torsion spring. One side of the inner end of the control handle 5 is provided with a driving protrusion 501 that matches the concave portion 602. The control handle 5 pivots to allow the driving protrusion 501 to be clamped in the recess 602, so as to drive the closing connecting plate 601 to rotate counterclockwise around its bottom end. The counterclockwise rotation of the closing connecting plate 601 drives the outer sleeve 3 to move axially forward synchronously until the jaw assembly 1 is driven to close; the locking connection member includes a release knob 603 and a locking rod 604. The inner end of the release knob 603 is rotatably built into the handheld part 4 through a second torsion spring. The front side of the release knob 603 is convexly provided with a first end 6031 and the rear side is concavely provided with a notch 6032. The locking rod 604 extends axially. The locking rod 604 is extended and sleeved with a first spring 6041 that drives it to move axially forward. The front end of the locking rod 604 is straight and slidably abuts against the rear side wall of the release knob 603 to drive the first end 6031 to slide and abut against the rear end of the closed connecting plate 601. When the closed connecting plate 601 rotates counterclockwise to its limit position, the front end of the locking rod 604 slides into the recess 6032 to lock the release knob 603. At the same time, the first end 6031 abuts against the rear end of the closed connecting plate 601 to lock the closed connecting plate 601, so that the jaw assembly 1 remains in a closed state.The firing control assembly includes a firing rack 701 fixed to the rear end of the knife bar 2. The control handle 5 pivots to move the firing rack 701 axially forward. The rear end of the locking rod 604 tilts upward and faces the rear end of the firing rack 701. When the firing rack 701 moves axially backward to its initial position, the firing rack 701 abuts the rear end of the locking rod 604 and drives it backward to unlock the release knob 603. The release knob 603 rotates in the opposite direction to reset, unlocking the closing connecting plate 601. The closing connecting plate 601 rotates clockwise and drives the outer sleeve 3 to move axially backward synchronously, driving the jaw assembly 1 to open.

[0021] In this solution, a recess 602 with an opening is provided on the closing connecting plate 601 to cooperate with the control handle 5 to form a detachable connection relationship, so that the control handle 5 can only drive the closing connecting plate 601 to rotate in one direction by pivoting. Such a connection relationship can complete the closing operation of the jaw assembly 1 in one step, and at the same time, a locking connector is provided to lock the closing connecting plate 601 to lock the closed state of the jaw assembly 1. At this time, the closing connecting plate 601 moves to its counterclockwise limit position, which is also the pivot limit position of the control handle 5. Therefore, when the control handle 5 is connected to the closing control assembly, the control handle 5 pivoting will not affect the position of the closing connecting plate 601; on the other hand, such a connection relationship requires that the control handle 5 must first be connected to the closing control assembly, and can only be separated from the closing connecting plate 601 after the jaw assembly 1 is closed, and then connected to the firing control assembly through the switching mechanism, and the closing control assembly needs to be unlocked by resetting the firing rack 701. This connection sequence not only meets the operating requirements and usage habits, but also makes the knife bar 2 only extend when the jaw assembly 1 is closed, and the jaw assembly 1 can only open when the knife bar 2 is retracted in the outer sleeve 3, avoiding the knife bar 2 from extending when the jaw assembly 1 is open, ensuring safety in use. The connection relationship between the jaw assembly 1 and the outer sleeve 2 is a prior art and is not the focus of this solution, so it will not be described here.

[0022] In order to improve the smoothness of the control handle 5 driving the closed connecting plate 601, the inner contour of the recess 602 is an arc shape, and the outer contour of the driving protrusion 501 is an arc shape matching the recess 602, so that sliding friction is formed between the two to reduce wear between the two and improve smoothness.

[0023] Specific examples Figure 1 、 Figure 2 and Figure 8As shown, the rear top of the release knob 603 forms a protruding second end 6033, and the recess 6032 is formed between the second end 6033 and the rear side wall of the release knob 603. A slot 6034 is formed on the top surface of the second end 6033. A stopper 6035 is disposed above the release knob 603, matching the slot 6034. The locking rod 604 drives the release knob 603 to rotate counterclockwise until the stopper 6035 engages with the slot 6034. The release knob 603 can rotate clockwise under the torsion of the second torsion spring, and counterclockwise under the push of the locking rod 604. The slot 6034 and stopper 6035 define the counterclockwise rotation limit of the release knob 603, preventing the release knob 603 from excessive counterclockwise rotation and causing a failure of the contact between the release knob 603 and the closing connecting plate 601.

[0024] Furthermore, the abutment between the front end of the locking rod 604 and the recess 6032 can limit the further rotation of the release knob 603. In order to further ensure an effective locking effect on the release knob 603, a pin 605 is pivotally provided below the second end 6033, and the rear side of the pin 605 abuts against a second spring 606 that drives it to pivot counterclockwise toward the release knob 603, so that when the release knob 603 rotates counterclockwise to its limit position, the pin 605 pivots and abuts against the bottom of the second end 6033 to lock the release knob 603. At this time, the limit block 6035 and the pin 605 respectively abut against the upper and lower end surfaces of the second end 6033 to complete the preferred locking of the release knob 603. The interior of the bayonet 605 is hollow to allow the front end of the locking rod 604 to pass through. The front end of the locking rod 604 is formed into a hook shape to hook the top of the bayonet 605. When the locking rod 604 moves axially backward, the bayonet 605 is driven to pivot clockwise to separate from the second end 6033 to unlock the release knob 603.

[0025] A second recess matching the rear end of the closure connecting plate 601 is formed between the first end 6031 and the front side of the release knob 603, so that in an initial state, the rear end of the closure connecting plate 601 is slidably engaged in the second recess. When the closure connecting plate 601 rotates counterclockwise, its rear end slides along the inner wall of the second recess until the rear end surface of the closure connecting plate 601 abuts against the end surface of the first end 6031. Preferably, the rear end of the closure connecting plate 601 and the end surface of the first end 6031 are matching inclined surfaces, so that when the release knob 603 is locked, the rear end surface of the closure connecting plate 601 and the end surface of the first end 6031 form surface contact, thereby enhancing the effectiveness of the abutment between the two and preventing them from sliding away.

[0026] Preferably, the outer end of the release knob 603 protrudes from the handle 4 to form a handle. This structure allows the user to manually turn the release button 603 to prevent the closing connecting plate 601 and the release knob 603 from forming an equilibrium state and not retracting, or to prevent the closing control assembly from being stuck and unable to retract, thereby ensuring that the jaw assembly 1 can be opened and ensuring safe use.

[0027] An axially extending guide sleeve 402 is provided in the hand-held part 4, and the locking rod 604 is passed through the guide sleeve 402. One end of the first spring 6041 is fixed on the locking rod 604, and the other end abuts against the inner wall of the guide sleeve 402 to drive the locking rod 604 to move axially forward.

[0028] A fixed base 301 is fixed to the rear end of the outer sleeve 3. A return spring 302 is sleeved on the outer sleeve 3. The two ends of the return spring 302 abut between the front end of the fixed base 301 and the inner wall of the handle housing, driving the outer sleeve 3 to move axially backward. A connecting rod 607 is pivotally connected to the bottom of the fixed base 301. The other end of the connecting rod 607 is pivotally connected to the front end of the closed connecting plate 601. The connecting rod 607 is provided primarily to connect the front end of the closed connecting plate 601 with the fixed base 301. In other feasible embodiments, the front end of the closed connecting plate 601 can also be directly pivotally connected to the bottom of the fixed base 301.

[0029] like Figure 9As shown, the switching mechanism includes a reset fork 801 and a firing safety 802, a slot 502 is provided on the front side of the inner end of the control handle 5, the reset fork 801 is inserted into the slot 502, and a third spring 803 is abutted between the inner end of the reset fork 801 and the bottom of the slot 502, the firing rack 701 has a socket 702, the reset fork 801 pivots synchronously with the control handle 5, and is inserted into the socket 702 under the elastic force of the third spring 803 to lock the firing rack 701; the firing safety 802 is radially inserted in the driving protrusion 501, and at least one end of the firing safety 802 protrudes outward from the driving protrusion 501. The handheld portion 4 has a driving groove 804 on the side wall of the firing safety 802. The inner walls of the driving groove 804 are inclined on both sides to form a driving inclined surface. A connecting protrusion 805 is convexly provided on the proximal side wall of the reset fork 801. The connecting protrusion 805 is embedded in the driving groove 804 and slides against the driving inclined surface. By pressing the firing safety 802 to move radially, the driving inclined surface synchronously presses the connecting protrusion 805, so that the reset fork 801 retracts until it is separated from the socket 702, thereby unlocking the firing rack 701. Only at this time can the control handle 5 switch to connect to the firing control assembly to drive the firing rack 701 to move axially. Preferably, both ends of the firing safety 802 protrude from the handheld portion 4, so that the user can press the firing safety 802 from either side of the handheld portion 4.

[0030] The firing control assembly includes a firing paddle 703, which is arranged at the top of the inner end of the control handle 5, and the interior of the firing paddle 703 is hollow so that the reset fork 801 can pass through, and a tooth portion is formed at the bottom of the firing rack 701. When the firing rack 701 is unlocked, the control handle 5 drives the firing paddle 703 to pivot and shift the teeth one by one to drive the firing rack 701 to move axially forward.

[0031] A strip groove 7011 is provided in the middle of the bottom of the firing rack 701 along its extension direction, and the width of the strip groove 7011 matches the top of the reset fork 801, so that the reset fork 801 does not engage with the tooth portion during the pivoting process, thereby avoiding unnecessary wear on the tooth portion.

[0032] The firing control assembly also includes a knife-retracting pull tab 704, a reset button 705, a reset rod 706 and a step pin 707. A group of step pins 707 are fixed at intervals on the side of the firing rack 701. A group of inclined holes 708 are obliquely provided on the knife-retracting pull tab 704. The step pins 707 are passed through one of the inclined holes 708 one by one. The proximal end of the firing rack 701 has a first strip hole 709 extending axially. The proximal end of the knife-retracting pull tab 704 has a second strip hole 710 perpendicular to the first strip hole 709. The reset rod 706 radially passes through the first strip hole 709. 9. The second strip hole 710. An axially extending strip slot is provided on the shell of the hand-held part 4. The reset button 705 is respectively fixed to the two ends of the reset rod 706 protruding from the strip slot. When the reset button 705 is axially pulled to move along the first strip hole 709, the knife-retracting pull tab 704 can be driven to move downward along the inclined hole 708 synchronously, so as to drive the top of the firing paddle 703 to separate from the tooth portion of the firing rack 701; when the reset button 705 is axially pulled to move along the strip slot, the firing rack 701 can be pulled to move axially synchronously until its initial position.

[0033] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0034] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-accidental-touch manual stapler, comprising a jaw assembly (1), a knife bar (2), an outer sleeve (3), and a handheld portion (4), wherein the jaw assembly (1) is arranged at the front end of the outer sleeve (2), the knife bar (2) is inserted into the outer sleeve (3), a closing control assembly is arranged in the handheld portion (4) to drive the outer sleeve (3) to drive the jaw assembly (1) to open and close by axial movement, and a firing control assembly is arranged in the handheld portion (4) to drive the knife bar (2) to move axially in the jaw assembly (1); characterized in that: A control handle (5) is pivotally connected to the handheld portion (4) via a connecting shaft (401), and the control handle (5) can be selectively connected to the closing control component or the firing control component through a switching mechanism. The closing control assembly includes a closing connection plate (601) and a locking connection piece. The center of the closing connection plate (601) is provided with a recess (602) with an opening extending backward, and the front end, rear end and bottom end thereof are respectively convex relative to the center. The front end of the closing connection plate (601) is transmission-connected with the tail end of the outer sleeve (3). The bottom end of the closing connection plate (601) is pivotally connected to the connecting shaft (401) through a first torsion spring. One side of the inner end of the control handle (5) is convexly provided with a driving protrusion (501) matching the recess (602). The control handle (5) is pivoted to make the driving protrusion (501) clamped in the recess (602) to drive the closing connection plate (601) to rotate counterclockwise around its bottom end. The counterclockwise rotation of the closing connection plate (601) drives the outer sleeve (3) to synchronously move axially forward until the jaw assembly (1) is driven to close. The locking connection member comprises a release knob (603) and a locking rod (604). The inner end of the release knob (603) is rotatably built into the handheld portion (4) via a second torsion spring. The front side of the release knob (603) is provided with a first end (6031) convexly and the rear side is provided with a notch (6032). The locking rod (604) extends axially and is sleeved with a first spring (6041) that drives it to move axially forward. The front end of the locking rod (604) is straight and aligned with the rear side of the release knob (603). The first end (6031) is driven to slide and abut against the rear end of the closing connecting plate (601) by sliding against the wall, and when the closing connecting plate (601) is rotated counterclockwise to its limit position, the front end of the locking rod (604) slides into the recess (6032) to lock the release knob (603), and at the same time, the first end (6031) abuts against the rear end of the closing connecting plate (601) to lock the closing connecting plate (601), so that the jaw assembly (1) remains in a closed state; The firing control assembly includes a firing rack (701) fixed to the tail end of the knife rod (2), and the control handle (5) pivots to move the firing rack (701) axially forward. The tail end of the locking rod (604) is tilted upward and faces the tail end of the firing rack (701). When the firing rack (701) moves axially backward to its initial position, the firing rack (701) abuts against the tail end of the locking rod (604) and drives it to move backward to unlock the release knob (603). The release knob (603) rotates in the opposite direction to reset and unlock the closing connecting plate (601). The closing connecting plate (601) rotates clockwise and drives the outer sleeve (3) to move axially backward synchronously to drive the jaw assembly (1) to open.

2. The manual stapler according to claim 1, characterized in that: A second end (6033) that bulges outward is formed at the top of the rear side of the release knob (603), and a slot (6034) is formed on the top surface of the second end (6033). A limit block (6035) that matches the slot (6034) is provided above the release knob (603), and the locking rod (604) drives the release knob (603) to rotate counterclockwise until the limit block (6035) is engaged with the slot (6034).

3. The manual stapler according to claim 2, characterized in that: A latch (605) is pivotally provided below the second end (6033), and the rear side of the latch (605) abuts against a second spring (606) that drives it to pivot counterclockwise toward the release knob (603), so that when the release knob (603) rotates counterclockwise to its limit position, the latch (605) pivots and abuts against the bottom of the second end (6033) to lock the release knob (603); the interior of the latch (605) is hollow to allow the front end of the locking rod (604) to pass through, and the front end of the locking rod (604) is formed into a hook shape to hook the top of the latch (605). When the locking rod (604) moves axially backward, the latch (605) is driven to pivot clockwise to separate from the second end (6033) to unlock the release knob (603).

4. The manual stapler according to claim 3, characterized in that: The rear end of the closing connecting plate (601) and the end surface of the first end (6031) are matching inclined surfaces. When the release knob (603) is locked, the rear end surface of the closing connecting plate (601) abuts against the end surface of the first end (6031), and the outer end of the release knob (603) protrudes from the hand-held portion (4) to form a handle.

5. The manual stapler according to claim 4, characterized in that: An axially extending guide sleeve (402) is provided in the hand-held portion (4), and the locking rod (604) is inserted into the guide sleeve (402). One end of the first spring (6041) is fixed on the locking rod (604), and the other end abuts against the inner wall of the guide sleeve (402) to drive the locking rod (604) to move axially forward.

6. The manual stapler according to claim 5, characterized in that: A fixing seat (301) is fixed to the tail end of the outer sleeve (3), and a return spring (302) is sleeved on the outer sleeve (3). Both ends of the return spring (302) abut between the front end of the fixing seat (301) and the inner wall of the shell of the handheld part to drive the outer sleeve (3) to move axially backward; the bottom pivot of the fixing seat (301) is connected to a connecting rod (607), and the other end of the connecting rod (607) is connected to the front pivot of the closed connecting plate (601).

7. The manual stapler according to claim 6, characterized in that: The switching mechanism includes a reset fork (801) and a firing safety (802), a slot (502) is provided on the front side of the inner end of the control handle (5), the reset fork (801) is inserted into the slot (502), and a third spring (803) is abutted between the inner end of the reset fork (801) and the bottom of the slot (502), the firing rack (701) has a socket (702), the reset fork (801) pivots synchronously with the control handle (5), and is inserted into the socket (702) under the elastic force of the third spring (803) to lock the firing rack (701); the firing safety (802) is radially inserted into the driving protrusion (501), and the firing safety ( 802) has at least one end protruding from the handheld portion (4), a driving groove (804) is provided on the side wall of the firing safety (802), and both sides of the inner wall of the driving groove (804) are inclined to form a driving inclined surface, and a connecting protrusion (805) is provided on the proximal side wall of the reset fork (801), and the connecting protrusion (805) is embedded in the driving groove (804) and slidably abuts against the driving inclined surface, and by pressing the firing safety (802) to move radially, the driving inclined surface synchronously presses the connecting protrusion (805), so that the reset fork (801) retracts until it is separated from the socket (702), thereby unlocking the firing rack (701), and at this time the control handle (5) can be switched to connect to the firing control component.

8. The manual stapler according to claim 7, characterized in that: The firing control assembly includes a firing paddle (703), which is arranged at the top of the inner end of the control handle (5), and the interior of the firing paddle (703) is hollow so that the reset fork (801) can pass through, and a tooth portion is formed at the bottom of the firing rack (701). When the firing rack (701) is unlocked, the control handle (5) drives the firing paddle (703) to move the teeth one by one by pivoting to drive the firing rack (701) to move axially forward.

9. The manual stapler according to claim 7, characterized in that: The firing control assembly further includes a blade retraction tab (704), a reset button (705), a reset rod (706) and a step pin (707), a group of the step pins (707) are fixed at intervals on the side of the firing rack (701), a group of inclined holes (708) are obliquely provided on the blade retraction tab (704), and the step pins (707) are passed through one of the inclined holes (708) one by one, the proximal end of the firing rack (701) has a first strip hole (709) extending axially, the proximal end of the blade retraction tab (704) has a second strip hole (710) perpendicular to the first strip hole (709), and the reset rod (706) radially passes through the first strip hole (710). The handheld portion (4) is provided with an axially extending strip notch on its shell, and the reset button (705) is respectively fixed to the two ends of the reset rod (706) protruding from the strip notch. When the reset button (705) is axially pulled to move along the first strip hole (709), the knife-retracting pull tab (704) can be driven to move downward along the inclined hole (708) to drive the top of the firing paddle (703) to separate from the teeth of the firing rack (701); when the reset button (705) is axially pulled to move along the strip notch, the firing rack (701) can be pulled to move axially synchronously until its initial position.

10. The manual stapler according to claim 9, characterized in that: A strip groove (7011) is provided in the middle of the bottom of the firing rack (701) along its extension direction, and the width of the strip groove (7011) matches the top of the reset fork (801).

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