Surgical instrument

Abstract

Provided is a surgical instrument, comprising a jaw assembly, a steering drive structure, and a locking member. The steering drive structure comprises an operating assembly and a driving assembly drivably connected to the operating assembly. The driving assembly is drivably connected to the jaw assembly. The operating assembly has a first state and a second state. The locking member is drivably connected to the operating assembly. The locking member has a first position and a second position. When the operating assembly is in the first state, the locking member is in the first position, and the locking member locks the driving assembly. The locking member is configured to: in response to the operating assembly being switched from the first state to the second state, be driven by the operating assembly to move from the first position to the second position, so as to release the locking of the driving assembly. When the operating assembly is in the second state and the locking member is in the second position, in response to the operating assembly moving, the driving assembly drives the jaw assembly to rotate. By means of the locking member located in the first position that can restrict the jaw assembly from driving the driving assembly to move, the rotation of the jaw assembly is restricted.

Description

Surgical instruments

[0001] This application claims priority to Chinese Patent Application No. 202510097503.3, filed on January 21, 2025, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0002] Embodiments of this disclosure relate to a surgical instrument. Background Technology

[0003] Surgical staplers are commonly used surgical instruments in medicine that replace manual suturing. Their main working principle is to use a scalpel to sever tissue and titanium staples to anastomose it, similar to a stapler. Depending on the body part they are used for, staplers can be divided into various types. For surgical staplers, the working principle involves inserting a cannula of a precisely positioned trocar into the patient's body at the surgical site. This creates a longitudinal incision in the tissue, and staples are applied to the opposite sides of the incision, thereby severing and anastomosing the tissue. Summary of the Invention

[0004] The embodiments disclosed herein are intended to provide a surgical instrument.

[0005] This disclosure is achieved through the following technical solution:

[0006] A surgical instrument, comprising:

[0007] Jaw assembly;

[0008] A steering drive structure includes an operating component and a drive component drivably connected to the operating component, the drive component being drivably connected to the jaw assembly, and the operating component having a first state and a second state.

[0009] A locking element, which is drivably connected to the operating component, has a first position and a second position;

[0010] When the operating component is in the first state, the locking member is located in the first position and the locking member locks the driving component; the locking member is configured to: in response to the operating component switching from the first state to the second state, the locking member is driven by the operating component to move from the first position to the second position to release the lock on the driving component;

[0011] When the operating component is in the second state and the locking member is in the second position, the driving component drives the jaw assembly to rotate in response to the movement of the operating component.

[0012] For example, the surgical instrument further includes an elastic element connected to the locking element;

[0013] In response to the operating component switching from the first state to the second state, the operating component drives the locking member to move from the first position to the second position, and the elastic member deforms to store energy.

[0014] For example, in response to the operating component switching from the second state to the first state, the elastic element restores its deformation to release energy, thereby driving the locking element to move from the second position to the first position.

[0015] For example, when the locking member is in the first position, it abuts against the drive assembly to restrict the movement of the drive assembly, thereby locking the drive assembly;

[0016] When the locking member is in the second position, it disengages from the drive component to release the movement restriction on the drive component, thereby releasing the lock on the drive component.

[0017] For example, the drive assembly includes a transmission element and an actuator drivably connected to the transmission element, the actuator being drivably connected to the jaw assembly;

[0018] The operating component is drivably connected to the transmission member, which is configured to convert the motion of the operating component into the movement of the actuator to drive the jaw assembly to rotate.

[0019] When the locking member is in the first position, it abuts against the transmission member or the actuator to restrict the movement of the actuator, thereby locking the drive assembly;

[0020] When the locking member is in the second position, it disengages from the transmission member or the actuator to release the movement restriction on the actuator, thereby releasing the lock on the drive assembly.

[0021] For example, the locking element includes a supporting portion;

[0022] The abutting part is configured such that, in response to the locking member being in the first position, the abutting part is located on the movement path of the actuator to abut the actuator, thereby restricting the movement of the actuator;

[0023] In response to the locking member being in the second position, the abutting part disengages from the movement path of the actuator to release its abutment against the actuator, thereby releasing the movement restriction on the actuator.

[0024] For example, the transmission component includes a first transmission part and a second transmission part tractably connected to the first transmission part, the operating component is drivably connected to the first transmission part, and the second transmission part is connected to the actuator;

[0025] When the locking member is in the first position, it abuts against the first transmission part and / or the second transmission part to restrict the transmission between the first transmission part and the second transmission part, thereby restricting the movement of the actuator;

[0026] When the locking member is in the second position, it disengages from the first transmission part and / or the second transmission part to release the transmission restriction on the first transmission part and the second transmission part, thereby releasing the restriction on the movement of the actuator.

[0027] For example, the first transmission part includes a first transmission structure, the second transmission part includes a second transmission structure, and the first transmission part and the second transmission part perform transmission through the cooperation of the first transmission structure and the second transmission structure;

[0028] When the locking member is in the first position, it abuts against the first transmission structure and / or the second transmission structure to restrict the transmission between the first transmission part and the second transmission part, thereby restricting the movement of the actuator;

[0029] When the locking member is in the second position, it disengages from the first transmission structure and / or the second transmission structure to release the transmission restriction on the first transmission part and the second transmission part, thereby releasing the restriction on the movement of the actuator.

[0030] For example, both the first transmission structure and the second transmission structure are toothed structures.

[0031] For example, the operating component includes an operating handle and a mating part, the operating handle being drivably connected to the driving component and the locking part; the operating handle has a fixed position and a movable position;

[0032] When the operating component is in the first state, the operating handle is in a fixed position, and the mating part cooperates with the operating handle in the fixed position to restrict the first movement of the operating handle, thereby restricting the operating handle from driving the driving component and the locking part.

[0033] In response to a second movement of the operating handle relative to the mating member, the operating handle moves from the fixed position to the active position, the mating member disengages from the operating handle in the active position to release the first movement restriction on the operating handle, thereby switching the operating component from the first state to the second state, and the operating handle drives the locking member to move from the first position to the second position.

[0034] When the operating component is in the second state and the locking member is in the second position, the driving component drives the jaw assembly to rotate in response to the first movement of the operating handle.

[0035] For example, the first motion is rotation, and the second motion is movement.

[0036] For example, the operating handle is provided with a guide portion, the guide portion including a transition surface, a first portion having a first height and a second portion having a second height, the first portion and the second portion being connected through the transition surface, and the first height being greater than the second height;

[0037] In response to a second movement of the operating handle relative to the mating member, the operating handle moves from the fixed position to the active position, and the guide drives the locking member abutting thereon to move from the first position to the second position.

[0038] For example, the surgical instrument further includes an elastic element connected to the locking element, the elastic element being configured to bias the locking element toward the operating handle.

[0039] For example, one of the operating handle and the mating component includes a mating part, and the other includes a locking groove;

[0040] When the operating component is in the first state, the operating handle is located in the fixed position, and the mating part is inserted into the locking groove to restrict the first movement of the operating handle;

[0041] In response to a second movement of the operating handle relative to the mating member, the operating handle moves from the fixed position to the active position, and the mating part separates from the locking groove to release the first movement restriction on the operating handle, thereby switching the operating component from the first state to the second state.

[0042] For example, the jaw assembly includes a staple cartridge seat and a staple anchor seat rotatably connected to the staple cartridge seat; the jaw assembly has an open state and a closed state;

[0043] When the jaw assembly is in the open state, the pin seat and the staple cartridge seat are at a certain angle to each other; when the jaw assembly is in the closed state, the pin seat and the staple cartridge seat are parallel or approximately parallel.

[0044] For example, the surgical instrument also includes a drivably connected outer sheath and control assembly, the outer sheath being drivably connected to the jaw assembly;

[0045] In response to the operation of the control component, the control component drives the outer sleeve to move, thereby driving the anvil to rotate relative to the staple cartridge seat, causing the jaw assembly to switch between the open state and the closed state. Attached Figure Description

[0046] Figure 1 is a schematic diagram of the overall structure of a surgical instrument according to an embodiment of the present disclosure;

[0047] Figure 2 is a schematic diagram of the jaw assembly according to an embodiment of the present disclosure;

[0048] Figure 3 is a schematic diagram of the structure of a cutting blade assembly according to an embodiment of the present disclosure;

[0049] Figure 4 is a schematic diagram of the structure of a surgical instrument according to an embodiment of the present disclosure at the position of the rotation drive structure.

[0050] Figure 5 is a schematic diagram of the structure of a control component according to an embodiment of the present disclosure;

[0051] Figure 6 is a schematic diagram of the jaw assembly of one embodiment of the present disclosure in the direct striking state;

[0052] Figure 7 is a schematic diagram of the structure of a surgical instrument according to an embodiment of the present disclosure at the position of the angle turning component, wherein the jaw assembly is in a straight-hitting state.

[0053] Figure 8 is a schematic diagram of the jaw assembly of one embodiment of the present disclosure in a bent state;

[0054] Figure 9 is a structural schematic diagram of an angle steering component according to an embodiment of the present disclosure (I);

[0055] Figure 10 is a structural schematic diagram (II) of the angle steering component according to one embodiment of the present disclosure;

[0056] Figure 11 is a schematic diagram of the cooperation between the angle steering component and the fixing component according to an embodiment of the present disclosure;

[0057] Figure 12 is a schematic diagram of the steering drive structure according to one embodiment of the present disclosure (I).

[0058] Figure 13 is a schematic diagram of the steering drive structure according to one embodiment of the present disclosure (II).

[0059] Figure 14 is a magnified view of part A in Figure 13;

[0060] Figure 15 is a schematic diagram of a partial explosion structure of a surgical instrument according to an embodiment of the present disclosure.

[0061] Figure 16 is a bottom view of the steering drive structure of an embodiment of the present disclosure in the first state.

[0062] Figure 17 is a magnified view of part B in Figure 16;

[0063] Figure 18 is a schematic diagram of the steering drive structure in the first state according to an embodiment of the present disclosure;

[0064] Figure 19 is a partial structural schematic diagram of the steering drive structure of an embodiment of the present disclosure in the first state.

[0065] Figure 20 is a schematic diagram of the steering drive structure of one embodiment of the present disclosure in the second state (a).

[0066] Figure 21 is a schematic diagram of the steering drive structure of one embodiment of the present disclosure in the second state (II);

[0067] Figure 22 is a partial structural schematic diagram of the steering drive structure of an embodiment of the present disclosure in the second state.

[0068] Figure 23 is a schematic diagram of the structure of the operating handle according to an embodiment of the present disclosure;

[0069] Figure 24 is an assembly diagram of the mating parts, the resetting parts, and the transmission parts according to an embodiment of the present disclosure;

[0070] Figure 25 is an exploded structural diagram of the jaw assembly and sleeve assembly according to an embodiment of the present disclosure.

[0071] Figure 26 is a schematic diagram of the assembly of the jaw assembly and the angle steering component according to an embodiment of the present disclosure;

[0072] Figure 27 is a structural schematic diagram of the angle steering component according to one embodiment of the present disclosure (III);

[0073] Figure 28 is a schematic diagram of the assembly of the angle steering component and the actuator according to an embodiment of the present disclosure, wherein the jaw assembly is in a straight-on state;

[0074] Figure 29 is a schematic diagram of the assembly of the angle steering component and the actuator according to an embodiment of the present disclosure, wherein the jaw assembly is in a bent state;

[0075] Figure 30 is a schematic diagram of the connection between the jaw assembly and the sleeve assembly according to an embodiment of the present disclosure;

[0076] Figure 31 is a cross-sectional view of position AA in Figure 30;

[0077] Figure 32 is a structural schematic diagram of the staple cartridge seat and the staple seat according to an embodiment of the present disclosure;

[0078] Figure 33 is a schematic diagram of the jaw assembly in the closed state according to an embodiment of the present disclosure;

[0079] Figure 34 is a structural schematic diagram of the jaw assembly in the open state according to an embodiment of the present disclosure.

[0080] The reference numerals in the above figures are:

[0081] 10-jaw assembly, 110-pin cartridge seat, 111-slanted oblique groove, 120-pin seat, 121-first driven part, 122-second driven part, 123-pin;

[0082] 20-Sleeve assembly, 210-Outer sleeve, 211-Pipe body, 212-Drive tube, 213-First drive component, 214-Second drive component, 220-Inner sleeve, 221-Rotating shaft;

[0083] 30 - Cutting blade assembly, 310 - Blade head, 320 - Blade holder, 330 - Mandrel;

[0084] 40-Steering drive structure, 410-Operating component, 420-Operating handle, 421-Guide part, 4211-First part, 4212-Transition surface, 4213-Second part, 422-Mating part, 430-Mating component, 431-Locking groove, 440-Reset component, 450-Drive assembly, 460-Transmission component, 461-First transmission part, 462-Second transmission part, 463-Drive gear, 464-Driven gear, 465-Upper gear, 466-Lower gear, 470-Actuator, 471-Push rod, 472-Protrusion;

[0085] 50-Control component, 510-Cut blade drive component, 520-Power source, 521-Gear, 522-Motor;

[0086] 60-Angle steering component, 610-Outer peripheral surface, 611-Middle arc surface, 612-First side surface, 613-Second side surface, 620-Connecting part, 630-Wall part, 640-Steering hole, 650-Abutting part, 660-Stop part;

[0087] 70-Locking component, 710-Body, 720-Supporting part;

[0088] 80 - Elastic element;

[0089] 910 - Motion conversion structure, 920 - Fixing component, 931 - Upper housing, 932 - Lower housing. Detailed Implementation

[0090] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0091] It is important to understand that the terms "proximal" and "distal" used in this article are relative to the healthcare worker operating the stapler's handle. "Proximal" refers to the part closer to the healthcare worker, while "distal" refers to the part farther away. That is, the handle is proximal, and the jaw assembly is distal. For example, the proximal end of a component refers to the end relatively closer to the handle, and the distal end refers to the end relatively closer to the jaw assembly. The terms "upper" and "lower" are relative to the position of the anvil and stapler seat on the jaw assembly; specifically, the anvil is "upper," and the stapler seat is "lower." However, staplers can be used in many orientations and positions, so these terms expressing relative positional relationships are not limited or absolute.

[0092] In this invention, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, a movable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements, such as contact. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. It should be noted that when "connected" or "linked" is preceded by a qualifier, it has the meaning defined by that qualifier, excluding only obviously excluded cases, but not other possible cases. For example, "detachable connection" refers to a detachable connection, excluding an integral part, but movable connections are not excluded.

[0093] A specific embodiment of the present invention discloses a surgical instrument, which can be a stapler. Referring to Figures 1, 2, and 3, the surgical instrument includes a jaw assembly 10, a cannula assembly 20, a cutting blade assembly 30, and a control assembly 50. The jaw assembly 10 includes a staple cartridge seat 110 and an anvil seat 120 rotatably connected. The jaw assembly 10 has an open state and a closed state. Referring to Figure 1, the jaw assembly 10 is in the open state, and the staple cartridge seat 110 and the anvil seat 120 are at an angle to each other. Referring to Figure 2, the jaw assembly 10 is in the closed state, and the staple cartridge seat 110 and the anvil seat 120 are close to each other to clamp tissue. The staple cartridge seat 110 and the anvil seat 120 are parallel or substantially parallel to each other. One end of the cannula assembly 20 is rotatably connected to the jaw assembly 10, and the other end is connected to the control assembly 50. The surgeon can control the jaw assembly 10 and the cutting blade assembly 30 through the control assembly 50 so that the jaw assembly 10 clamps the tissue in the closed state, and the cutting blade assembly 30 runs within the jaw assembly 10. During operation, the cutting blade assembly 30 cuts the tissue and drives the titanium staples to anastomose the tissue.

[0094] In some embodiments of this disclosure, referring to FIG4, the surgical instrument further includes a steering drive structure 40, which drives the jaw assembly 10 to rotate relative to the cannula assembly 20. During the operation, when the jaw assembly 10 is in the open state inside the patient's body, the surgeon operates the steering drive structure 40 to drive the jaw assembly 10 to rotate relative to the cannula assembly 20. After the jaw assembly 10 is rotated to a suitable position, the surgeon operates the control component 50 to switch the jaw assembly 10 from the open state to the closed state, clamping and squeezing the patient's tissue. After squeezing, the surgeon operates the control component 50 to move the cutting blade assembly 30 distally to advance the blade and cut the tissue clamped by the jaw assembly 10. After cutting, the cutting blade assembly 30 moves proximally to retract the blade and return the cutting blade assembly 30 to its original position. After retraction, the surgeon operates the steering drive structure 40 to drive the jaw assembly 10 to rotate relative to the cannula assembly 20 to reset, facilitating removal from the patient's body.

[0095] For example, referring to Figures 3 and 5, the control assembly 50 includes a cutting blade drive 510 and a power source 520. The power source 520 drives the cutting blade assembly 30 to move distally via the cutting blade drive 510 to achieve cutting advance, and the power source 520 drives the cutting blade assembly 30 to move proximally via the cutting blade drive 510 to achieve cutting retraction. The cutting blade assembly 30 includes a blade head 310, a blade shank 320, and a mandrel 330. The blade head 310 is disposed within the jaw assembly 10 for cutting tissue. The blade shank 320 is connected to the blade head 310, and the mandrel 330 is connected to the blade shank 320. The blade shank 320 and the mandrel 330 extend along the axial direction of the sleeve assembly 20, and the cutting blade drive 510 is connected to the mandrel 330. The power source 520 includes a motor 522 and a gear 521. When the motor 522 drives the gear 521 to rotate in the forward direction, it drives the cutting blade drive 510 to move to the distal end. The cutting blade drive 510 acts on the spindle 330 and the blade bar 320. The spindle 330 and the blade bar 320 move to the distal end along the axial direction of the sleeve assembly 20, thereby pushing the cutter head 310 to move to the distal end within the jaw assembly 10 to achieve cutting. When the motor 522 drives the gear 521 to rotate in the reverse direction, it drives the cutting blade drive 510 to move to the proximal end. The cutting blade drive 510 acts on the spindle 330 and the blade bar 320. The spindle 330 and the blade bar 320 move to the proximal end along the axial direction of the sleeve assembly 20, thereby driving the cutter head 310 to move to the proximal end within the jaw assembly 10 to achieve cutting.

[0096] For example, in some embodiments of this disclosure, referring to Figures 6 to 9, the surgical instrument further includes an angle-deflecting component 60, which is connected to the jaw assembly 10 and rotatably connected to the cannula assembly 20. The surgeon drives the angle-deflecting component 60 to rotate by operating the steering drive structure 40, thereby causing the jaw assembly 10 to rotate relative to the cannula assembly 20. The jaw assembly 10 has a straight-thrust state and a bent-thrust state. Referring to Figures 6 and 7, when the jaw assembly 10 is in the straight-thrust state, the length direction of the jaw assembly 10 is collinear with the axial direction of the cannula assembly 20, and the shank 320 extends along the axial direction of the cannula assembly 20. Referring to Figure 8, when the jaw assembly 10 is in the bent-thrust state, the length direction of the jaw assembly 10 forms an angle with the axial direction of the cannula assembly 20, and the shank 320 undergoes bending deformation.

[0097] Before the jaw assembly 10 is switched to the closed state in the patient's body to clamp the tissue, the jaw assembly 10 can rotate relative to the cannula assembly 20 via the angle steering element 60. After the jaw assembly 10 is switched to the closed state to clamp the tissue, the jaw assembly 10 needs to be fixed to prevent the jaw assembly 10 from continuing to rotate relative to the cannula assembly 20 and pulling the tissue during subsequent operations.

[0098] For example, in some embodiments of this disclosure, referring to Figures 9 and 10, the angle steering member 60 has an outer peripheral surface 610. The outer peripheral surface 610 is arranged around the rotation axis of the angle steering member 60 on its outer periphery. The outer peripheral surface 610 includes a central arc surface 611, a first side surface 612, and a second side surface 613, with the first side surface 612 and the second side surface 613 located on opposite sides of the central arc surface 611. The angle steering member 60 also includes a connecting portion 620 and a wall portion 630. The wall portion 630 has a certain thickness. The connecting portion 620 is disposed on the inner side of the wall portion 630, and the outer peripheral surface 610 is located on the outer side of the wall portion 630. The wall portion 630 separates the connecting portion 620 from the outer peripheral surface 610.

[0099] For example, referring to Figures 4 and 11, the surgical instrument also includes a motion conversion structure 910 and a fixation member 920. The cannula assembly 20 includes an outer cannula 210 and an inner cannula 220. The outer cannula 210 is fitted over the inner cannula 220 and is movable relative to the inner cannula 220. The outer cannula 210 is connected to the fixation member 920 via the motion conversion structure 910. The outer cannula 210 has a proximal position and a distal position. Correspondingly, the fixation member 920 has a locked state and an unlocked state. Each connecting portion 620 of the angle steering member 60 is located proximal to the rotation axis of the angle steering member 60. The fixation member 920 moves from the unlocked state to the proximal position to the locked state. When locked, the fixation member 920 cooperates with the connecting portion 620 of the angle steering member 60 to fix the angle steering member 60 in the corresponding position. When the outer sleeve 210 is in the proximal position, the jaw assembly 10 is in the open state, the retainer 920 is in the unlocked state, and the jaw assembly 10 is rotatable relative to the sleeve assembly 20. When the outer sleeve 210 moves from the proximal position to the distal position, the jaw assembly 10 switches to the closed state, and the outer sleeve 210 drives the retainer 920 to move proximally via the motion conversion structure 910, causing the retainer 920 to switch from the unlocked state to the locked state. The retainer 920 fixes the angle-deflecting member 60, preventing the angle-deflecting member 60 from rotating, thereby preventing the jaw assembly 10 from rotating relative to the sleeve assembly 20. With this setting, the jaw assembly 10 can be fixed in direction while closing, preventing the jaw assembly 10 from rotating and pulling on the tissue after clamping it. The motion conversion structure 910 in this application can employ a lever or other similar structure. For example, the rotating part of the lever is mounted on the frame of the surgical instrument. The lever is rotatable relative to the frame via the rotating part. The lever includes a first part located on one side of the rotating part and a second part located on the other side of the rotating part. The first part is connected to the outer sleeve 210, and the second part is connected to the fixing member 920. When the outer sleeve 210 moves from the proximal position to the distal position, the outer sleeve 210 drives the first part to rotate around the rotating part, thereby driving the second part to rotate synchronously, causing the fixing member 920 connected to the second part to move proximally, thus switching from the unlocked state to the locked state. When the outer sleeve 210 moves from the distal position to the proximal position, the outer sleeve 210 drives the first part to rotate around the rotating part, thereby driving the second part to rotate synchronously, causing the fixing member 920 connected to the second part to move distally, thus switching from the locked state to the unlocked state.

[0100] When the jaw assembly 10 is in the open state, the angle steering member 60 is not fixed by the fixing member 920, and the angle steering member 60 can be driven to rotate by the steering drive structure 40, thereby driving the jaw assembly 10 to rotate relative to the cannula assembly 20. However, when the jaw assembly 10 is in the open state, in order to prevent the surgeon from accidentally operating the steering drive structure 40 during the operation, and to allow the jaw assembly 10 to rotate without needing to rotate, the steering drive structure 40 itself has a locking function.

[0101] For example, in some embodiments of this disclosure, referring to Figures 1, 12 to 15, the surgical instrument includes a jaw assembly 10, a steering drive structure 40, and a locking member 70. The steering drive structure 40 includes an operating component 410 and a drive component 450 drivably connected to the operating component 410. The drive component 450 is drivably connected to the jaw assembly 10, and the operating component 410 has a first state and a second state. The locking member 70 is drivably connected to the operating component 410 and has a first position and a second position.

[0102] When the operating component 410 is in the first state, the locking member 70 is in the first position and locks the drive component 450. The locking member 70 is configured such that, in response to the operating component 410 switching from the first state to the second state, the locking member 70 is driven by the operating component 410 to move from the first position to the second position to release the lock on the drive component 450. When the operating component 410 is in the second state and the locking member 70 is in the second position, in response to the movement of the operating component 410, the drive component 450 drives the jaw assembly 10 to rotate.

[0103] Because there are assembly gaps between the operating component 410 and the driving component 450, as well as between the various components of the driving component 450, even if the operating component 410 is not operated in the first state, the driving component 450 can actually move within a certain range. When the jaw assembly 10 is interfered with by other tissues or subjected to other external forces in the patient's body, the jaw assembly 10 will also rotate, and drive the driving component 450 to move at the same time. If the surgeon switches the jaw assembly 10 to the closed state by operating the control component 50, the angle steering component 60 will be locked in the wrong position by the fixing component 920, resulting in the actual cut tissue being inconsistent with the intended cut tissue.

[0104] Therefore, in this scheme, when the operating component 410 is in the first state, the locking member 70 located in the first position locks the driving component 450 to restrict its movement. When the jaw assembly 10 is interfered with by other tissues or subjected to other external forces within the patient's body, the jaw assembly 10 can be restricted from driving the driving component 450, preventing the jaw assembly 10 from rotating and avoiding discrepancies between the actual cut tissue and the intended cut tissue. When the surgeon switches the operating component 410 from the first state to the second state according to the needs of the surgery, the locking member 70 moves from the first position to the second position under the drive of the operating component 410 to release the lock on the driving component 450. When the operating component 410 is in the second state and the locking member 70 is in the second position, the surgeon operates the operating component 410 to cause the driving component 450 to drive the jaw assembly 10 to rotate to the appropriate position.

[0105] With this configuration, when the operating component 410 is in the first state, the driving component 450 can be locked by the locking member 70 to prevent the jaw assembly 10 from rotating undesirably when it is interfered with by other tissues or subjected to other external forces, thereby avoiding discrepancies between the actual tissue cut and the intended tissue cut; at the same time, when the operating component 410 switches from the first state to the second state, the operating component 410 drives the locking member 70 to unlock the driving component 450, preventing the locking member 70 from restricting the rotation of the jaw assembly 10.

[0106] For example, when the operating component 410 is in the first state, it is locked, and its movement is restricted. This restricts the operation component 410 from driving the jaw assembly 10 to rotate via the drive component 450, preventing the surgeon from accidentally operating the operating component 410 during surgery. The drive component 450 allows the jaw assembly 10 to rotate without being required, and the drive component 450 is locked by the locking member 70. The jaw assembly 10 cannot be interfered with by other tissues or subjected to other external forces, thus preventing unwanted movement. When the operating component 410 switches from the first state to the second state, it drives the locking member 70 from the first position to the second position, releasing the lock on the drive component 450. When the operating component 410 is in the second state, it is unlocked, its movement is not restricted, and it can then drive the jaw assembly 10 to rotate via the drive component 450.

[0107] For example, in some embodiments of this disclosure, referring to Figures 13, 14, and 15, the surgical instrument further includes an elastic element 80 connected to a locking element 70; in response to the operating component 410 switching from a first state to a second state, the operating component 410 drives the locking element 70 to move from a first position to a second position, and the elastic element 80 deforms to store energy. The elastic element 80 ensures that the locking element 70 in the first position reliably holds the operating component 410 in place, and that the movement of the locking element 70 driven by the operating component 410 is stable and reliable.

[0108] In other embodiments of this disclosure, in response to the operation component 410 switching from the second state to the first state, the elastic element 80 restores its deformation to release energy, thereby driving the locking element 70 to move from the second position to the first position. The energy stored by the deformation of the elastic element 80 acts on the locking element 70, driving the locking element 70 to move from the second position to the first position, realizing linkage with the operation component 410, and making operation convenient.

[0109] For example, referring to Figures 13, 14, and 15, the locking member 70 includes a body 710 and a supporting portion 720 disposed on the body 710. The top end of the body 710 abuts against the operating component 410. The elastic member 80 is a spring, which is sleeved on the body 710. One end of the spring abuts against the supporting portion 720, and the other end of the spring abuts against the lower housing 932. Referring to the orientation shown in Figures 13 and 14, the elastic member 80 applies an elastic force to the locking member 70, so that the body 710 of the locking member 70 remains abutting against the operating component 410. When the operating component 410 switches from a first state to a second state, the operating component 410 drives the body 710 to move downward, so that the locking member 70 moves downward from the first position to the second position. During this process, the supporting portion 720 acts on the elastic member 80, so that the elastic member 80 is compressed to store energy. When the operating component 410 switches from the second state to the first state, the elastic member 80 restores its deformation to release energy. The elastic member 80 acts on the supporting part 720, driving the body 710 to move upward, so that the locking member 70 automatically moves upward from the second position to the first position.

[0110] In some embodiments of this disclosure, referring to Figures 16, 17, and 18, when the locking member 70 is in the first position, it abuts against the drive assembly 450 to restrict the movement of the drive assembly 450, thereby locking the drive assembly 450. Referring to Figures 20 and 21, when the locking member 70 is in the second position, it disengages from the drive assembly 450 to release the movement restriction on the drive assembly 450, thereby releasing the lock on the drive assembly 450. This method of abutting and restricting movement makes locking the drive assembly 450 relatively simple, and the locking and unlocking methods of the locking member 70 are relatively convenient, avoiding increased structural complexity.

[0111] For example, referring to Figures 12 to 14, the drive assembly 450 includes a transmission member 460 and an actuator 470 drivably connected to the transmission member 460, the actuator 470 being drivably connected to the jaw assembly 10; the operation assembly 410 is drivably connected to the transmission member 460, the transmission member 460 being configured to convert the motion of the operation assembly 410 into the movement of the actuator 470 to drive the jaw assembly 10 to rotate;

[0112] When in the first position, the locking member 70 abuts against the transmission member 460 or the actuator 470 to restrict the movement of the actuator 470, thereby locking the drive assembly 450; when in the second position, the locking member 70 disengages from the transmission member 460 or the actuator 470 to release the restriction on the movement of the actuator 470, thereby releasing the lock on the drive assembly 450.

[0113] With this configuration, the operating component 410 drives the actuator 470 to move via the transmission component 460, and the movement of the actuator 470 drives the jaw assembly 10 to rotate. Both the transmission component 460 and the actuator 470 are located on the transmission path between the operating component 410 and the jaw assembly 10. Because there are assembly gaps between the transmission component 460 and the actuator 470, as well as in the structure of the transmission component 460 itself, the driving component 450 can still move even when the operating component 410 is in the first state; specifically, the actuator 470 can move a certain distance. Therefore, when the operating component 410 is in the first state, the locking component 70, located in the first position, abuts against the transmission component 460 or the actuator 470 to restrict the movement of the actuator 470, preventing the jaw assembly 10 from being interfered with by other tissues or subjected to other external forces within the patient's body, thus causing the jaw assembly 10 to rotate relative to the cannula assembly 20.

[0114] For example, in some embodiments of this disclosure, referring to Figures 17 and 19, the locking member 70 includes a body 710 and a supporting portion 720 disposed on the body 710; the supporting portion 720 is configured such that, in response to the locking member 70 being in a first position, the supporting portion 720 is located on the movement path of the actuator 470 to support the actuator 470, thereby restricting the movement of the actuator 470; referring to Figure 22, in response to the locking member 70 being in a second position, the supporting portion 720 disengages from the movement path of the actuator 470 to disengage from supporting the actuator 470, thereby releasing the restriction on the movement of the actuator 470.

[0115] For example, the operating component 410 drives the actuator 470 to move distally via the transmission component 460. The actuator 470 can push the angle steering component 60, causing the angle steering component 60 to rotate relative to the sleeve assembly 20, thereby enabling the jaw assembly 10 to rotate relative to the sleeve assembly 20. When the locking component 70 is in the first position, its abutting portion 720 is located on the movement path of the actuator 470. By abutting against the actuator 470, the movement of the actuator 470 is restricted, preventing the movement of the actuator 470 from driving the angle steering component 60 to rotate relative to the sleeve assembly 20, thereby restricting the rotation of the jaw assembly 10 relative to the sleeve assembly 20. When the locking component 70 is in the second position, its abutting portion 720 disengages from the movement path of the actuator 470, thus disengaging from the actuator 470. The actuator 470 can then continue to move, thereby driving the angle steering component 60 to rotate relative to the sleeve assembly 20, and thereby driving the jaw assembly 10 to rotate relative to the sleeve assembly 20. Since the actuator 470 acts directly on the angle-turning member 60 to make the jaw assembly 10 rotate relative to the sleeve assembly 20, this method can directly limit the actuator 470's action on the angle-turning member 60 by restricting the movement of the actuator 470, effectively limiting the rotation of the jaw assembly 10 relative to the sleeve assembly 20.

[0116] For example, referring to Figures 19 and 22, the actuator 470 includes a push rod 471 and a protrusion 472. The protrusion 472 is connected to the push rod 471, and the distal end of the push rod 471 is drivably connected to the jaw assembly 10. The transmission member 460 is configured to convert the movement of the operating member 410 into the movement of the push rod 471 to drive the jaw assembly 10. Referring to Figures 16 to 19, when the locking member 70 is in the first position, the abutment 720 is located on the movement path of the protrusion 472 to abut against the protrusion 472, thereby restricting the movement of the push rod 471. Referring to Figures 20 to 22, when the locking member 70 is in the second position, the abutment 720 disengages from the movement path of the protrusion 472 to disengage from the protrusion 472, thereby releasing the restriction on the movement of the push rod 471. For example, referring to the orientation shown in Figure 19, when the locking member 70 is in the first position, the abutting part 720 and the protrusion 472 overlap in the vertical direction. When the push rod 471 moves, the protrusion 472 on the push rod 471 is abutted by the abutting part 720, restricting the movement of the push rod 471. Referring to the orientation shown in Figure 22, when the locking member 70 is in the second position, the abutting part 720 and the protrusion 472 on the push rod 471 are completely offset in the vertical direction. When the push rod 471 moves, the protrusion 472 is prevented from being abutted by the abutting part 720, thereby releasing the restriction on the movement of the push rod 471.

[0117] For example, in another embodiment of this disclosure, referring to FIG15 and FIG16, the transmission member 460 includes a first transmission part 461 and a second transmission part 462 tractably connected to the first transmission part 461, the operation component 410 is drivably connected to the first transmission part 461, and the second transmission part 462 is connected to the actuator 470.

[0118] When in the first position, the locking member 70 abuts against the first transmission part 461 and / or the second transmission part 462 to restrict the transmission between the first transmission part 461 and the second transmission part 462, thereby restricting the movement of the actuator 470.

[0119] When the locking member 70 is in the second position, it disengages from the first transmission part 461 and / or the second transmission part 462 to release the transmission restriction on the first transmission part 461 and the second transmission part 462, thereby releasing the restriction on the movement of the actuator 470.

[0120] With this configuration, when the operating component 410 is in the second state, the surgeon operates the operating component 410 to drive the first transmission part 461 to move. The first transmission part 461 is connected to the second transmission part 462, causing the first transmission part 461 to drive the second transmission part 462 to move synchronously. During the movement of the second transmission part 462, the actuator 470 is moved, thereby driving the jaw assembly 10 to rotate. In this solution, when the operating component 410 is in the first state, the locking member 70 abuts against the first transmission part 461 and / or the second transmission part 462, thereby restricting the transmission between the first transmission part 461 and the second transmission part 462, preventing the first transmission part 461 from driving the second transmission part 462 to move synchronously, and ultimately restricting the movement of the actuator 470.

[0121] For example, the first transmission part 461 includes a first transmission structure, and the second transmission part 462 includes a second transmission structure. The first transmission part 461 and the second transmission part 462 transmit power through the cooperation of the first transmission structure and the second transmission structure. When in the first position, the locking member 70 abuts against the first transmission structure and / or the second transmission structure to restrict the transmission between the first transmission part 461 and the second transmission part 462, thereby restricting the movement of the actuator 470. When in the second position, the locking member 70 disengages from the first transmission structure and / or the second transmission structure to release the transmission restriction between the first transmission part 461 and the second transmission part 462, thereby releasing the restriction on the movement of the actuator 470.

[0122] For example, referring to Figures 15 to 22, both the first and second transmission structures are gear structures. The first transmission structure is a rack mounted on the actuator 470, and the second transmission structure includes a driving gear 463 and a driven gear 464 meshing with the driving gear 463. The driven gear 464 includes an upper gear 465 and a lower gear 466 arranged side by side, wherein the upper gear 465 meshes with the driving gear 463, and the lower gear 466 meshes with the rack. When the operating component 410 is in the second state, the surgeon drives the driving gear 463 to rotate by operating the operating component 410. When the driving gear 463 rotates, it drives the upper gear 465 of the driven gear 464 to rotate. The upper gear 465 and the lower gear 466 are connected by a connecting shaft to rotate synchronously. When the lower gear 466 rotates, it drives the rack to move, thereby driving the actuator 470 to move. When the operating component 410 is in the first state, by restricting the transmission of the first transmission part 461 and the second transmission part 462, the movement of the first transmission part 461 driven by the second transmission part 462 is restricted, and the movement of the actuator 470 is ultimately restricted.

[0123] For the operation component 410 to switch from the first state to the second state, and for the operation component 410 to drive the locking member 70 to move from the first position to the second position, the solutions in some embodiments of this disclosure can be adopted.

[0124] For example, referring to Figures 15, 23, and 24, the operating component 410 includes an operating handle 420 and a mating member 430. The operating handle 420 is drivably connected to the driving component 450 and the locking member 70. The operating handle 420 has a fixed position and a movable position. When the operating component 410 is in the first state, the operating handle 420 is in the fixed position, and the mating member 430 engages with the operating handle 420 in the fixed position to limit the first movement of the operating handle 420, thereby limiting the driving of the driving component 450 and the locking member 70 by the operating handle 420.

[0125] In response to the second movement of the operating handle 420 relative to the mating member 430, the operating handle 420 moves from the fixed position to the active position, and the mating member 430 disengages from the operating handle 420 in the active position to release the first movement restriction on the operating handle 420, so that the operating component 410 switches from the first state to the second state, and the operating handle 420 drives the locking member 70 to move from the first position to the second position; when the operating component 410 is in the second state and the locking member 70 is in the second position, in response to the first movement of the operating handle 420, the driving component 450 drives the jaw assembly 10 to rotate.

[0126] With this configuration, the mating part 430 engages with the operating handle 420 in a fixed position to restrict the first movement of the operating handle 420, thereby restricting the operating handle 420 from causing the drive assembly 450 to move. This prevents the surgeon from accidentally operating the operating handle 420 during surgery, causing the jaw assembly 10 to rotate when it is not needed. When it is necessary to operate the steering drive structure 40 to rotate the jaw assembly 10, the surgeon can operate the operating handle 420 to make it move a second time relative to the mating part 430, so that the operating handle 420 moves from the fixed position to the active position. The mating part 430 disengages from the operating handle 420 in the active position. At this time, the operating handle 420 can perform the first movement, and the operating assembly 410 switches from the first state to the second state. During the second movement of the operating handle 420 relative to the mating part 430, the locking part 70 can be driven to move from the first position to the second position to unlock the drive assembly 450. This method simplifies overall operation and enables the linkage between the operating component 410 and the locking element 70. It prevents the locking element 70 from still locking the drive component 450 and restricting the normal function of the steering drive structure 40 when the operating component 410 is in the second state. When the operating component 410 is in the second state and the locking element 70 is in the second position, the surgeon can operate the operating handle 420 to rotate it, thereby driving the drive component 450 to move, and ultimately driving the jaw assembly 10 to rotate.

[0127] For example, the first motion is rotation, and the second motion is translation.

[0128] For example, in some embodiments of this disclosure, referring to Figures 22 and 23, one of the operating handle 420 and the mating member 430 includes a mating portion 422 and the other includes a locking groove 431; when the operating component 410 is in the first state, the operating handle 420 is in a fixed position, and the mating portion 422 is inserted into the locking groove 431 to restrict the first movement of the operating handle 420.

[0129] In response to the second movement of the operating handle 420 relative to the mating part 430, the operating handle 420 moves from the fixed position to the active position, and the mating part 422 separates from the locking groove 431 to release the first movement restriction on the operating handle 420, so that the operating component 410 switches from the first state to the second state.

[0130] For example, the surgical instrument also includes an upper housing 931, a mating part 422 is provided at the bottom of the operating handle 420, a mating part 430 is fixedly connected to the upper housing 931, and the mating part 430 is provided with a plurality of locking grooves 431, the driving gear 463 of the transmission member 460 is partially disposed inside the mating part 430, and a reset member 440 is provided inside the mating part 430, the reset member 440 includes a reset spring, the mating part 422 of the operating handle 420 is connected to the reset member 440, and the reset spring abuts against the mating part 422; the side wall corresponding to the part of the driving gear 463 located inside the mating part 430 has an opening, the opening allowing the mating part 422 of the operating handle 420 to extend out to achieve insertion with the locking grooves 431.

[0131] When the operating assembly 410 is in the first state, the operating handle 420 is in a fixed position, and the return spring abuts against the mating part 422. By applying an elastic force to the operating handle 420, the mating part 422 engages with one of the locking slots 431 of the mating member 430, restricting the rotation of the operating handle 420 relative to the mating member 430, thereby restricting the operating handle 420 from driving the drive assembly 450 to rotate. When the surgeon operates the operating handle 420 to move it relative to the mating member 430, the operating handle 420 moves from the fixed position to the movable position, the mating part 422 separates from the locking slot 431, and the operating handle 420 can rotate relative to the mating member 430. The operating assembly 410 then switches from the first state to the second state. At this time, the surgeon can rotate the operating handle 420, which drives the drive assembly 450 to rotate, thereby causing the jaw assembly 10 to rotate. When the jaw assembly 10 is rotated to the appropriate position, the surgeon stops operating the operating handle 420. Under the action of the reset member 440, the operating handle 420 moves from the active position to the fixed position. The mating part 422 of the operating handle 420 extends out of the opening on the side wall of the drive gear 463 and is inserted into the locking groove 431 at the corresponding position, restricting the rotation of the operating handle 420. The operating assembly 410 returns to the first state.

[0132] For example, in some embodiments of this disclosure, referring to Figures 17, 18, 20 and 23, the operating handle 420 is provided with a guide portion 421, the guide portion 421 including a transition surface 4212, a first portion 4211 having a first height and a second portion 4213 having a second height, the first portion 4211 and the second portion 4213 being connected by the transition surface 4212, the first height being greater than the second height;

[0133] In response to the second movement of the operating handle 420 relative to the mating member 430, the operating handle 420 moves from a fixed position to an active position, and the guide 421 drives the locking member 70, which is held thereto, to move from a first position to a second position.

[0134] The structure of the guide portion 421 allows the second movement of the operating component 410 relative to the mating member 430 to directly drive the locking member 70 from the first position to the second position. For example, when the operating component 410 is in the first state, the operating handle 420 is in the fixed position, and the top end of the locking member 70 abuts against the first portion 4211 of the guide portion 421. At this time, the locking member 70 is in the first position, locking the driving component 450. When the operating handle 420 performs a second movement relative to the mating member 430, the operating handle 420 moves from the fixed position to the movable position, and the operating component 410 switches from the first state to the second state. During the movement of the operating handle 420 from the fixed position to the movable position, the transition surface 4212 drives the locking member 70, which abuts against it, to move from the first position to the second position. When the locking member 70 is in the second position, the top end of the locking member 70 abuts against the second portion 4213 of the guide surface. Referring to the orientation shown in Figures 19 and 22, since the height of the first part 4211 is greater than the height of the second part 4213, the height of the locking member 70 in the first position is higher than its height in the second position. When the locking member 70 is at the height of the second position, the drive assembly 450 can be unlocked.

[0135] For example, in some embodiments of this disclosure, the surgical instrument further includes an elastic element 80 connected to a locking element 70, configured to bias the locking element 70 toward the operating handle 420. The elastic element 80 allows the locking element 70 to remain abutting against the guide portion 421 and move from a first position to a second position under the guidance of the guide portion 421, while simultaneously deforming to store energy. When the locking element 70 is in the second position, the elastic element 80 biases the locking element 70 against the first portion 4211 of the guide portion 421. At this time, the operating handle 420 performs a second movement relative to the mating member 430, moving from an active position to a fixed position. Due to the presence of the transition surface 4212, the elastic element 80 can release the stored energy and recover its deformation, thereby driving the locking element 70 to move from the second position to the first position.

[0136] For example, in some embodiments of this disclosure, referring to Figures 25 and 26, the jaw assembly 10 is rotatably connected to the sleeve assembly 20 via an angle-deflecting member 60. During movement, the actuator 470 of the drive assembly 450 acts on the angle-deflecting member 60, driving it to rotate relative to the sleeve assembly 20, thereby enabling the jaw assembly 10 to rotate relative to the sleeve assembly 20. For example, the angle-deflecting member 60 has a turning hole 640, and the inner sleeve 220 of the sleeve assembly 20 is provided with a rotating shaft 221. The rotating shaft 221 is inserted into the turning hole 640, and the axis of the rotating shaft 221 coincides with the axis of the turning hole 640. The interaction between the rotating shaft 221 and the turning hole 640 allows the angle-deflecting member 60 to be rotatably connected to the sleeve assembly 20.

[0137] For example, referring to Figures 27, 28, and 29, the angle rotating member is provided with an abutment portion 650 and a stop portion 660 spaced apart from the abutment portion 650, forming a mating space between the abutment portion 650 and the stop portion 660. When the jaw assembly 10 is in the straight-handed state, the distal end of the actuator 470 abuts against the abutment portion 650. The surgeon operates the operating component 410 to move the actuator 470 distally into the mating space and pushes the abutment portion 650 within the mating space, causing the angle rotating member 60 to rotate, and the jaw assembly 10 switches from the straight-handed state to the curved-handed state.

[0138] When the actuator 470 stops moving distally, the distal end of the actuator 470 is limited by the abutment portion 650 and the stop portion 660 within the mating space. At the same time, the driving assembly 450 is locked by the locking member 70, and the movement of the actuator 470 is restricted. Even if the jaw assembly 10 is interfered with by other tissues or subjected to other external forces within the patient's body, the angle steering member 60 cannot drive the actuator 470 to move. Meanwhile, the actuator 470 is limited by the abutment portion 650 and the stop portion 660 within the mating space, restricting the rotation of the angle steering member 60, and ultimately restricting the rotation of the jaw assembly 10.

[0139] For example, as shown in Figures 28 and 29, the actuator 470 adopts a push rod 471 structure, with two push rods 471 provided. In response to the surgeon's operation of the operating component 410, the drive component 450 drives the right push rod 471 to move distally, and the left push rod 471 moves proximally accordingly. Meanwhile, the angle steering component 60 is provided with two pairs of abutment portions 650 and stop portions 660. When the right push rod 471 moves distally, it enters the corresponding mating space and pushes the corresponding abutment portion 650, causing the angle steering component 60 to rotate counterclockwise, thereby causing the jaw assembly 10 to rotate counterclockwise relative to the cannula assembly 20. Similarly, in response to the surgeon's operation of the operating component 410, the drive component 450 drives the left push rod 471 to move distally, the right push rod 471 to move proximally, and the left push rod 471 moves distally to enter the corresponding mating space and pushes the corresponding abutment portion 650, causing the angle steering component 60 to rotate clockwise, thereby causing the jaw assembly 10 to rotate clockwise relative to the cannula assembly 20.

[0140] For example, in some embodiments of this disclosure, the surgical instrument further includes a drivably connected outer sheath 210 and a control component 50, the outer sheath 210 being drivably connected to the jaw assembly 10; in response to the control component 50 being operated, the control component 50 drives the outer sheath 210 to move, thereby driving the pin seat 120 to rotate relative to the pin cartridge seat 110, causing the jaw assembly 10 to switch between an open state and a closed state.

[0141] For example, a motion conversion mechanism is provided between the outer tube 210 and the anvil 120 of the jaw assembly 10. The motion conversion mechanism converts the linear motion of the outer tube 210 into the rotation of the anvil 120, thereby enabling the jaw assembly 10 to switch between an open state and a closed state. When the control component 50 drives the outer tube 210 to move proximally, the motion conversion mechanism drives the anvil 120 to rotate upward, and the jaw assembly 10 is in the open state. When the control component 50 drives the outer tube 210 to move distally, the motion conversion mechanism drives the anvil 120 to rotate downward, and the jaw assembly 10 is in the closed state.

[0142] Referring to Figures 30, 31, and 32, the outer tube 210 includes a connected tube body 211 and a drive tube 212. The drive tube 212 drives the anvil seat 120 to rotate upwards or downwards to open or close the jaw assembly 10. The tube body 211 and the drive tube 212 are connected by a hinge. The motion conversion mechanism includes a first drive member 213 and a second drive member 214 disposed on the drive tube 212, and a first driven portion 121 and a second driven portion 122 disposed on the anvil seat 120. The first drive member 213 drives the anvil seat 120 to open; the first drive member 213 is a protrusion disposed on the drive tube 212, and the protrusion extends obliquely to the lower right. The second drive member 214 drives the anvil seat 120 to close; the second drive member 214 is a drive surface at the distal end of the drive tube 212. The first driven portion 121 can mate with the first drive member 213; the first driven portion 121 is a protrusion disposed on the anvil seat 120, and the protrusion extends upwards. The second driven part 122 can be mated with the second driving member 214, and the second driven part 122 is the abutment surface near the end of the abutment seat 120.

[0143] Referring to Figures 30 and 32, a guide mechanism is also provided between the pin seat 120 and the pin cartridge seat 110. The guide mechanism includes a pin 123 provided on the pin seat 120 and an oblique waist-shaped groove 111 provided on the pin cartridge seat 110. The oblique waist-shaped groove 111 extends upward at an angle from the proximal end to the distal end.

[0144] Referring to the state changes in Figures 34 to 33, when the jaw assembly 10 needs to be closed, the tube body 211 of the outer sleeve 210 pushes the drive tube 212 to move distally. The second drive member 214 of the drive tube 212 abuts against the second driven part 122 of the anvil seat 120. The pin 123 moves from the near-lower end of the oblique waist-shaped groove 111 to the far-upper end, and the anvil seat 120 pivots downward, putting the jaw assembly 10 in the closed state. Referring to the state changes in Figures 33 to 34, when the jaw assembly 10 needs to be opened, the tube body 211 of the outer sleeve 210 pulls the drive tube 212 to move proximally. The first drive member 213 of the drive tube 212 abuts against the first driven part 121 of the anvil seat 120. The pin 123 moves from the far-upper end of the oblique waist-shaped groove 111 to the near-lower end, and the anvil seat 120 pivots upward, putting the jaw assembly 10 in the open state.

[0145] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0146] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this disclosure and are not intended to limit the scope of protection of this disclosure. All equivalent implementations or modifications made without departing from the spirit of the art of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A surgical instrument, comprising: Jaw assembly; A steering drive structure includes an operating component and a drive component drivably connected to the operating component, the drive component being drivably connected to the jaw assembly, and the operating component having a first state and a second state. A locking element, which is drivably connected to the operating component, has a first position and a second position; When the operating component is in the first state, the locking member is located in the first position, and the locking member locks the driving component; The locking element is configured such that, in response to the operating component switching from the first state to the second state, the locking element is driven by the operating component to move from the first position to the second position to release the locking of the operating component; When the operating component is in the second state and the locking member is in the second position, the driving component drives the jaw assembly to rotate in response to the movement of the operating component.

2. The surgical instrument of claim 1, wherein, The surgical instrument further includes an elastic element connected to the locking element; In response to the operating component switching from the first state to the second state, the operating component drives the locking member to move from the first position to the second position, and the elastic member deforms to store energy.

3. The surgical instrument of Claim 2, wherein, In response to the operating component switching from the second state to the first state, the elastic element restores its deformation to release energy, and the elastic element drives the locking element, causing the locking element to move from the second position to the first position.

4. The surgical instrument of Claim 1, wherein, When the locking member is in the first position, it abuts against the driving component to restrict the movement of the driving component and thereby lock the driving component. When the locking member is in the second position, it disengages from the drive component to release the movement restriction on the drive component, thereby releasing the lock on the drive component.

5. The surgical instrument of claim 4, wherein, The drive assembly includes a transmission element and an actuator drivably connected to the transmission element, the actuator being drivably connected to the jaw assembly; The operating component is drivably connected to the transmission member, which is configured to convert the motion of the operating component into the movement of the actuator to drive the jaw assembly to rotate. When the locking member is in the first position, it abuts against the transmission member or the actuator to restrict the movement of the actuator, thereby locking the drive assembly; when the locking member is in the second position, it disengages from the transmission member or the actuator to release the movement restriction on the actuator, thereby releasing the lock on the drive assembly.

6. The surgical instrument of claim 5, wherein, The locking element includes a supporting part; The abutting part is configured such that, in response to the locking member being in the first position, the abutting part is located on the movement path of the actuator to abut the actuator, thereby restricting the movement of the actuator; In response to the locking member being in the second position, the abutting part disengages from the movement path of the actuator to release its abutment against the actuator, thereby releasing the movement restriction on the actuator.

7. The surgical instrument of Claim 5, wherein, The transmission component includes a first transmission part and a second transmission part that is tractably connected to the first transmission part. The operating component is drivably connected to the first transmission part, and the second transmission part is connected to the actuator. When the locking member is in the first position, it abuts against the first transmission part and / or the second transmission part to restrict the transmission between the first transmission part and the second transmission part, thereby restricting the movement of the actuator; When the locking member is in the second position, it disengages from the first transmission part and / or the second transmission part to release the transmission restriction on the first transmission part and the second transmission part, thereby releasing the restriction on the movement of the actuator.

8. The surgical instrument of Claim 7, wherein, The first transmission part includes a first transmission structure, and the second transmission part includes a second transmission structure. The first transmission part and the second transmission part transmit power through the cooperation of the first transmission structure and the second transmission structure. When the locking member is in the first position, it abuts against the first transmission structure and / or the second transmission structure to restrict the transmission between the first transmission part and the second transmission part, thereby restricting the movement of the actuator; When the locking member is in the second position, it disengages from the first transmission structure and / or the second transmission structure to release the transmission restriction on the first transmission part and the second transmission part, thereby releasing the restriction on the movement of the actuator.

9. The surgical instrument according to claim 8, wherein, Both the first transmission structure and the second transmission structure are toothed structures.

10. The surgical instrument according to claim 1, wherein, The operating component includes an operating handle and a mating part, the operating handle being drivably connected to the driving component and the locking part; the operating handle has a fixed position and a movable position; When the operating component is in the first state, the operating handle is in a fixed position, and the mating part cooperates with the operating handle in the fixed position to restrict the first movement of the operating handle, thereby restricting the operating handle from driving the driving component and the locking part. In response to a second movement of the operating handle relative to the mating member, the operating handle moves from the fixed position to the active position, the mating member disengages from the operating handle in the active position to release the first movement restriction on the operating handle, thereby switching the operating component from the first state to the second state, and the operating handle drives the locking member to move from the first position to the second position. When the operating component is in the second state and the locking member is in the second position, the driving component drives the jaw assembly to rotate in response to the first movement of the operating handle.

11. The surgical instrument of Claim 10, wherein, The first motion is rotation, and the second motion is translation.

12. The surgical instrument according to claim 10 or 11, wherein, The operating handle is provided with a guide portion, which includes a transition surface, a first portion having a first height, and a second portion having a second height. The first portion and the second portion are connected through the transition surface, and the first height is greater than the second height. In response to a second movement of the operating handle relative to the mating member, the operating handle moves from the fixed position to the active position, and the guide drives the locking member abutting thereon to move from the first position to the second position.

13. The surgical instrument according to claim 12, wherein, The surgical instrument also includes an elastic element connected to the locking element, the elastic element being configured to bias the locking element toward the operating handle.

14. The surgical instrument according to any one of claims 10-13, wherein, One of the operating handle and the mating component includes a mating part, and the other includes a locking groove; When the operating component is in the first state, the operating handle is located in the fixed position, and the mating part is inserted into the locking groove to restrict the first movement of the operating handle; In response to a second movement of the operating handle relative to the mating member, the operating handle moves from the fixed position to the active position, and the mating part separates from the locking groove to release the first movement restriction on the operating handle, thereby switching the operating component from the first state to the second state.

15. The surgical instrument according to any one of claims 1 to 14, wherein, The jaw assembly includes a staple cartridge seat and a staple anchor seat rotatably connected to the staple cartridge seat; the jaw assembly has an open state and a closed state. When the jaw assembly is in the open state, the pin seat and the staple cartridge seat are at a certain angle to each other; when the jaw assembly is in the closed state, the pin seat and the staple cartridge seat are parallel or approximately parallel.

16. The surgical instrument according to claim 15, wherein, The surgical instrument also includes a drivably connected outer sheath and a control assembly, the outer sheath being drivably connected to the jaw assembly; In response to the operation of the control component, the control component drives the outer tube to move, and the outer tube drives the pin holder to rotate relative to the pin cartridge seat, so that the jaw assembly switches between the open state and the closed state.

Images