A surgical instrument

Abstract

This application discloses a surgical instrument comprising a handle assembly, a barrel assembly, an actuator assembly, and a reset mechanism. The reset mechanism can switch a driven component to a second driving state. In the second driving state, the reset mechanism can rotate the driven component, which in turn drives a drive transmission assembly to move. This allows the actuator assembly to switch to a first actuator state when the jaw assembly is closed via a firing transmission mechanism, and to switch to a second actuator state when the jaw assembly is open via a bending transmission mechanism. In the event of a transmission failure, the reset mechanism must first switch the driven component to the second driving state to unlock the fault. Then, the reset mechanism rotates the driven component to reset the actuator assembly's state.

Description

[0001] This application claims priority to the patent with application number 2024119760274. Technical Field

[0002] This application relates to the field of medical device technology, specifically to a surgical instrument. Background Technology

[0003] Currently, minimally invasive surgery occupies an important position in surgical procedures, and staplers are commonly used surgical instruments in minimally invasive surgery. Existing staplers consist of an operating handle and an end effector, with the operating handle connected to the end effector via a slender barrel. The working principle of the stapler is to clamp the jaws of the end effector at a specific position near the lesion, cut the tissue using the firing mechanism of the end effector, and simultaneously suture using the staple cartridge assembly of the distal effector. Furthermore, in some surgical instruments, the operating handle can also control the bending movement of the end effector.

[0004] Taking the transmission system of an electric stapler as an example, the motor in its operating handle drives the firing component in the end effector to move and / or rotate the end effector through a gear and rack transmission structure. Because the operating handle of the electric stapler contains electronic control components, when components such as the PCB board, battery, or motor malfunction, the firing component cannot return to its proper position, causing the jaws to fail to open, and / or the end effector to fail to return to its un-rotated state (usually at a 0° angle to the aforementioned slender barrel). This makes it difficult for the end effector to exit the body, potentially requiring additional surgical intervention and causing unintended damage to the patient. Summary of the Invention

[0005] The main objective of this invention is to provide a surgical instrument with a reset mechanism for unlocking faults and resetting the state of the end effector in the event of a transmission failure.

[0006] In a first aspect, one embodiment provides a surgical instrument, comprising:

[0007] A handle assembly includes an active drive component, a driven drive component, and a drive transmission component. The driven drive component is switchable between a first drive state and a second drive state. In the first drive state, the driven drive component drives the active drive component and the drive transmission component, enabling the drive transmission component to move based on the rotation of the active drive component and under the transmission of the driven drive component. In the second drive state, the driven drive component disengages the drive connection between the active drive component and the drive transmission component.

[0008] A barrel assembly, the proximal end of which is connected to the handle assembly, the barrel assembly including a firing transmission mechanism and a bending transmission mechanism, wherein the drive transmission assembly can selectively drive at least one of the firing transmission mechanism and the bending transmission mechanism to move when it moves.

[0009] An actuator assembly, wherein the distal end of the barrel assembly is rotatably connected to the actuator assembly, the actuator assembly including a jaw assembly and a firing member, the jaw assembly being switchable between an open state and a closed state;

[0010] When the jaw assembly is in the closed state, the firing member can move between the proximal and distal ends of the actuator assembly based on the movement of the drive transmission assembly and under the transmission of the firing transmission mechanism; the firing member has a first position on its movement path, and when the firing member is in the first position, the actuator assembly is switched to a first actuator state that allows the jaw assembly to switch to the open state;

[0011] When the jaw assembly is in the open state, the actuator assembly can perform a bending motion based on the movement of the drive transmission assembly and under the transmission of the bending transmission mechanism; the bending path of the actuator assembly has a second position at a preset angle with the barrel assembly, and when the actuator assembly bends to the second position, the actuator assembly switches to a second actuator state;

[0012] The system includes a reset mechanism that can drive the driven component to switch to the second driving state. In the second driving state, the reset mechanism can drive the driven component to rotate and drive the drive transmission component to move, so that the actuator component can switch to the first actuator state when the jaw assembly is in the closed state through the transmission of the firing transmission mechanism, and switch to the second actuator state when the jaw assembly is in the open state through the transmission of the bending transmission mechanism.

[0013] In one embodiment, the handle assembly further includes a clutch mechanism, and the drive transmission assembly is configured as a rack assembly, the rack assembly including a firing rack and a bending rack; the clutch mechanism is switchable between an engaged state and a disengaged state, in the engaged state, the clutch mechanism drives the bending rack to the bending transmission mechanism; in the disengaged state, the clutch mechanism releases the drive connection between the bending rack and the bending transmission mechanism;

[0014] When the clutch mechanism is in the disengaged state, the reset mechanism can drive the firing rack and the bending rack to move, so that the firing component can move to the first position based on the movement of the firing rack and under the transmission of the firing transmission mechanism; when the clutch mechanism is in the engaged state, the reset mechanism can drive the firing rack and the bending rack to move, so that the actuator assembly can bend to the second position based on the movement of the bending rack and under the transmission of the bending transmission mechanism.

[0015] In one embodiment, the reset mechanism includes an unlocking member and a reset member. The active driving member is configured as a driving gear, the driven driving assembly is configured as a driven gear assembly, and the drive transmission assembly is configured as a rack assembly. The unlocking member can switch from a locked state to an unlocked state to drive the driven gear assembly from a first driving state to a second driving state. The unlocking member has a mounting portion, and the reset member is movably mounted on the mounting portion. When the unlocking member is in the unlocked state, the reset member can cooperate with the driven gear assembly and drive the driven gear assembly to rotate, thereby driving the rack assembly to move through the driven gear assembly, so that the actuator assembly switches between the first actuator state and the second actuator state.

[0016] In one embodiment, the driven component includes a driven gear and a rotating shaft, the rotating shaft being coaxially connected to the driven gear, and the unlocking member being rotatably connected to the rotating shaft; the unlocking member forms a first angle with the rotating shaft in the locked state, and a second angle with the rotating shaft in the unlocked state.

[0017] When the unlocking member switches from the locked state to the unlocked state, it rotates relative to the rotating shaft from a first angle to a second angle, and drives the driven gear to move away from the driving gear along its axial direction until they are separated, so that the driven gear assembly switches to the second driving state.

[0018] In one embodiment, the mounting portion is configured as a through mounting cavity, and at least a portion of the reset member is movably disposed within the mounting cavity; when the unlocking member is switched to the unlocked state, one end of the reset member near the rotating shaft can pass through the mounting cavity and engage with the rotating shaft, so that the reset member can rotate within the mounting cavity and drive the driven gear to rotate through the rotating shaft.

[0019] In one embodiment, a locking structure is further included to prevent the unlocking member from rotating relative to the pivot member from a second angle to a first angle, thereby preventing the unlocking member from switching from the unlocked state to the locked state.

[0020] In one embodiment, the locking structure includes a locking groove and a locking block. The locking block is used to engage with the locking groove when the unlocking member is switched to the unlocked state, so as to generate a resisting force that prevents the unlocking member from rotating relative to the pivot member from a second angle to a first angle.

[0021] In one embodiment, the locking block has a guide side and an abutment side disposed opposite to each other. The guide side has a guide ramp, which guides the locking block to embed into the locking groove when the unlocking member rotates relative to the pivot member from a first angle to a second angle. The abutment side abuts against the inner wall of the locking groove when the locking block engages with the locking groove, thereby generating a resisting force that prevents the unlocking member from rotating relative to the pivot member from the second angle to the first angle.

[0022] In one embodiment, the locking structure includes a self-locking groove and a self-locking protrusion. The self-locking protrusion abuts against the self-locking groove when the unlocking member switches to the unlocked state, thereby generating a resisting force that prevents the unlocking member from rotating relative to the pivot member from a second angle to a first angle. The self-locking protrusion has a guide arc surface, which guides the self-locking protrusion into the self-locking groove and abuts against it when the unlocking member rotates relative to the pivot member from a first angle to a second angle.

[0023] In one embodiment, the driven component is configured as a driven gear assembly, and the drive transmission component is configured as a rack assembly. The driven gear assembly includes a single driven gear. When the driven component is in the first driving state, the driven gear meshes with the driving gear. When the driven component is in the second driving state, the driven gear disengages from the driving gear. Furthermore, when the driven component is in both the first driving state and the second driving state, the driven gear meshes with the rack assembly.

[0024] In one embodiment, a closing locking mechanism is further included, which is switchable between a locked state and a released state; when the jaw assembly is in the closed state, the closing locking mechanism can switch to the locked state to keep the jaw assembly in the closed state; when the firing member is in the first position, the closing locking mechanism can switch to the released state to switch the jaw assembly to the open state.

[0025] Secondly, one embodiment provides a surgical instrument, comprising:

[0026] The handle assembly includes a drive gear, a single driven gear, and a rack assembly. The driven gear is switchable between a first driving state and a second driving state. In the first driving state, the driven gear meshes with the drive gear, and in the second driving state, the driven gear disengages from the drive gear. The driven gear meshes with the rack assembly in both the first and second driving states. When the driven gear is switched to the first driving state, it can rotate with the drive gear to drive the rack assembly.

[0027] A barrel assembly, the proximal end of which is connected to a handle assembly for transmitting the movement of the rack assembly;

[0028] An actuator assembly, wherein the distal end of the barrel assembly is connected to the actuator assembly, the actuator assembly including a jaw assembly and a firing member, the jaw assembly being switchable between an open state and a closed state;

[0029] When the jaw assembly is in the closed state, the firing member can move between the proximal and distal ends of the actuator assembly based on the movement of the rack assembly and under the drive of the barrel assembly; the firing member has a first position on its movement path, and when the firing member is in the first position, the actuator assembly is switched to a first actuator state that allows the jaw assembly to switch to the open state;

[0030] The system also includes a reset mechanism comprising an unlocking component and a reset component. The unlocking component is capable of switching from a locked state to an unlocked state, thereby driving the driven gear to switch from the first driving state to the second driving state. The unlocking component has a mounting portion, and the reset component is movably mounted on the mounting portion. When the unlocking component is in the unlocked state, the reset component can cooperate with the driven gear assembly and drive the driven gear assembly to rotate, thereby driving the rack assembly to move through the driven gear assembly, so that the actuator assembly switches to the first actuator state.

[0031] Thirdly, one embodiment provides a surgical instrument, comprising:

[0032] The handle assembly includes a drive gear, a single driven gear, and a rack assembly. The driven gear is switchable between a first driving state and a second driving state. In the first driving state, the driven gear meshes with the drive gear, and in the second driving state, the driven gear disengages from the drive gear. The driven gear meshes with the rack assembly in both the first and second driving states. When the driven gear assembly switches to the first driving state, it rotates following the drive gear to drive the rack assembly.

[0033] A barrel assembly, the proximal end of which is connected to a handle assembly for transmitting the movement of the rack assembly;

[0034] An actuator assembly, wherein the distal end of the barrel assembly is connected to the actuator assembly, the actuator assembly including a jaw assembly and a firing member, the jaw assembly being switchable between an open state and a closed state;

[0035] When the jaw assembly is in the closed state, the firing member can move between the proximal and distal ends of the actuator assembly based on the movement of the rack assembly and driven by the barrel assembly; when the rack assembly moves closer to the barrel assembly, the barrel assembly drives the firing member to move toward the distal end of the actuator assembly; when the rack assembly moves away from the barrel assembly, the barrel assembly drives the firing member to a first position, so that the actuator assembly switches to a first actuator state that allows the jaw assembly to switch to the open state;

[0036] The device includes a reset mechanism that can drive the driven gear to switch to the second driving state. When the driven gear switches to the second driving state, the reset mechanism can selectively drive the driven gear to rotate in opposite first and second directions. When the driven gear rotates in the first direction, it drives the rack assembly to move closer to the barrel assembly, thereby driving the firing member to move toward the distal end of the actuator assembly. When the driven gear rotates in the second direction, it drives the rack assembly to move away from the barrel assembly, thereby switching the jaw assembly to the first actuator state.

[0037] Fourthly, one embodiment provides a surgical instrument, comprising:

[0038] A handle assembly includes an active drive component, a driven drive component, and a drive transmission component. The driven drive component is switchable between a first drive state and a second drive state. In the first drive state, the driven drive component drives the active drive component and the drive transmission component, enabling the drive transmission component to move based on the rotation of the active drive component and under the transmission of the driven drive component. In the second drive state, the driven drive component disengages the drive connection between the active drive component and the drive transmission component.

[0039] A barrel assembly, the proximal end of which is connected to a handle assembly for transmitting the motion of the drive transmission assembly;

[0040] An actuator assembly, wherein the distal end of the barrel assembly is rotatably connected to the actuator assembly, the actuator assembly including a jaw assembly and a firing member, the jaw assembly being switchable between an open state and a closed state;

[0041] When the jaw assembly is in the open state and the driven assembly is in the first driven state, the actuator assembly can perform a bending motion based on the rotation of the active drive member and under the transmission of the drive transmission assembly and the barrel assembly.

[0042] The actuator assembly includes an operating mechanism that can switch the driven component to the second driving state. When the driven component is in the second driving state and the jaw assembly is in the open state, the operating mechanism can drive the driven component to rotate and drive the drive transmission assembly to move through the driven component, so that the actuator assembly can perform bending motion.

[0043] Fifthly, one embodiment provides a surgical instrument, comprising:

[0044] A handle assembly includes an active drive component, a driven drive component, and a drive transmission component. The driven drive component is switchable between a first drive state and a second drive state. In the first drive state, the driven drive component drives the active drive component and the drive transmission component, enabling the drive transmission component to move based on the rotation of the active drive component and under the transmission of the driven drive component. In the second drive state, the driven drive component disengages the drive connection between the active drive component and the drive transmission component.

[0045] A barrel assembly, the proximal end of which is connected to a handle assembly for transmitting the motion of the drive transmission assembly;

[0046] An actuator assembly, wherein the distal end of the barrel assembly is connected to the actuator assembly, the actuator assembly including a jaw assembly and a firing member, the jaw assembly being switchable between an open state and a closed state;

[0047] When the jaw assembly is in the closed state, the firing member can move between the proximal and distal ends of the actuator assembly based on the movement of the drive transmission assembly and under the transmission of the barrel assembly; the firing member has a first position on its movement path, and when the firing member is in the first position, the actuator assembly is switched to a first actuator state that allows the jaw assembly to switch to the open state;

[0048] A reset mechanism includes an unlocking component and a reset component. The unlocking component can switch from a locked state to an unlocked state to drive the driven component to switch from a first driving state to a second driving state. The reset component can cooperate with the driven component when the unlocking component is in the unlocked state and drive the driven component to rotate, so that the driven component drives the drive transmission component to move, thereby switching the actuator component to the first actuator state.

[0049] The device includes a housing having a first opening; the driven component includes a pivot member, which is located inside the housing when the unlocking member is in the locked state; when the unlocking member switches from the locked state to the unlocked state, it drives the pivot member to move toward the first opening, and at least a portion of the pivot member extends out of the first opening.

[0050] In one embodiment, the housing further has a mounting groove, at least a portion of the reset mechanism is disposed in the mounting groove, and the first opening communicates with the mounting groove; when the unlocking member is in the unlocked state, at least a portion of the rotating shaft extends into the mounting groove from the first opening.

[0051] Sixthly, one embodiment provides a surgical instrument, comprising:

[0052] A handle assembly includes an active drive component, a driven drive component, and a drive transmission component. The driven drive component is switchable between a first drive state and a second drive state. In the first drive state, the driven drive component drives the active drive component and the drive transmission component, enabling the drive transmission component to move based on the rotation of the active drive component and under the transmission of the driven drive component. In the second drive state, the driven drive component disengages the drive connection between the active drive component and the drive transmission component.

[0053] A barrel assembly, the proximal end of which is connected to a handle assembly for transmitting the motion of the drive transmission assembly;

[0054] An actuator assembly, wherein the distal end of the barrel assembly is connected to the actuator assembly, the actuator assembly including a jaw assembly and a firing member, the jaw assembly being switchable between an open state and a closed state;

[0055] When the jaw assembly is in the closed state, the firing member can move between the proximal and distal ends of the actuator assembly based on the movement of the drive transmission assembly and under the transmission of the barrel assembly; the firing member has a first position on its movement path, and when the firing member is in the first position, the actuator assembly is switched to a first actuator state that allows the jaw assembly to switch to the open state;

[0056] A reset mechanism includes an unlocking component and a reset component. The unlocking component can switch from a locked state to an unlocked state to drive the driven component to switch from a first driving state to a second driving state. The reset component can cooperate with the driven component when the unlocking component is in the unlocked state and drive the driven component to rotate, so that the driven component drives the drive transmission component to move, thereby switching the actuator component to the first actuator state.

[0057] The housing has a mounting slot and a cover for opening and closing the mounting slot; when the unlocking member is in the locked state, the reset mechanism is located within the mounting slot and allows the cover to close the mounting slot; when the unlocking member is in the unlocked state, at least a portion of the reset mechanism extends out of the mounting slot, and the unlocking member is subjected to a force that prevents it from switching to the unlocked state, thereby preventing the cover from closing the mounting slot.

[0058] In one embodiment, a locking structure is further included to prevent the unlocking element from switching from the unlocked state to the locked state.

[0059] According to the surgical instrument of the above embodiment, the surgical instrument includes a handle assembly, a barrel assembly, an actuator assembly, and a reset mechanism. The handle assembly includes an active drive member, a driven drive assembly, and a drive transmission assembly. The driven drive assembly is switchable between a first drive state and a second drive state. In the first drive state, the driven drive assembly drives the active drive member and the drive transmission assembly, enabling the drive transmission assembly to move based on the rotation of the active drive member and under the transmission of the driven drive assembly. In the second drive state, the driven drive assembly disengages the drive connection between the active drive member and the drive transmission assembly. The proximal end of the barrel assembly is connected to the handle assembly. The barrel assembly includes a firing mechanism and a bending mechanism. When the drive transmission assembly moves, it can selectively drive at least one of the firing mechanism and the bending mechanism. The distal end of the barrel assembly is rotatably connected to the actuator assembly. The actuator assembly includes a jaw assembly and a firing member. The jaw assembly is switchable between an open state and a closed state. When the jaw assembly is in the closed state, the firing member can move between the proximal and distal ends of the actuator assembly based on the movement of the drive transmission assembly and under the transmission of the firing transmission mechanism. The firing member has a first position along its movement path. When the firing member is in the first position, the actuator assembly switches to a first actuator state that allows the jaw assembly to switch to the open state. When the jaw assembly is in the open state, the actuator assembly can perform a bending movement based on the movement of the drive transmission assembly and under the transmission of the bending transmission mechanism. The bending path of the actuator assembly has a second position at a preset angle to the barrel assembly. When the actuator assembly bends to the second position, the actuator assembly switches to a second actuator state. The reset mechanism can drive the driven assembly to switch to the second drive state. In the second driving state, the driven component can be driven to rotate by the reset mechanism, and the driven component can be driven to move by the driven component, so that the actuator component can switch to the first actuator state by the transmission of the firing transmission mechanism when the jaw assembly is in the closed state, and switch to the second actuator state by the transmission of the bending transmission mechanism when the jaw assembly is in the open state.

[0060] When a surgical instrument experiences a transmission malfunction, if the user needs to unlock the malfunction and reset the actuator assembly, they must first use the reset mechanism to switch the driven component to the second drive state, thus unlocking the malfunction. Next, the reset mechanism rotates the driven component, which in turn moves the drive transmission component. Then, with the jaw assembly closed, the movement of the drive transmission component moves the firing mechanism, which in turn moves the firing element to the first position. At this point, the actuator assembly switches to the first actuator state, allowing the jaw assembly to open. After switching the jaw assembly to the open state, the user can continue to use the reset mechanism to rotate the driven component, which in turn moves the drive transmission component. This, in turn, moves the bending transmission mechanism, which in turn moves the actuator assembly to the second position. At this point, the jaw assembly switches to the second actuator state, thus resetting the actuator assembly to both the first and second actuator states. Attached Figure Description

[0061] Figure 1 This is a schematic diagram of the structure of a surgical instrument in normal operation according to one embodiment of this application;

[0062] Figure 2 For this application Figure 1 Enlarged view of point A in the middle;

[0063] Figure 3 This is a schematic diagram of the structure of a surgical instrument used during a repositioning operation in one embodiment of this application;

[0064] Figure 4 For this application Figure 3 Enlarged view of point B in the middle;

[0065] Figure 5 This is an exploded view of a surgical instrument in one embodiment of this application;

[0066] Figure 6 This is a cross-sectional view of an actuator component in one embodiment of this application;

[0067] Figure 7 This is a schematic diagram of the structure of the active driving element, the driven driving element, the driving transmission element and the reset mechanism working together in one embodiment of this application during normal operation;

[0068] Figure 8 This is a schematic diagram of the structure of the active driving element, the driven driving element, the driving transmission element and the reset mechanism working together in one embodiment of this application during normal operation, from another perspective.

[0069] Figure 9This is a schematic diagram of the structure of the drive transmission component, driven gear, and reset mechanism cooperating during normal operation in one embodiment of this application;

[0070] Figure 10 This is a schematic diagram of the structure of the drive transmission element, the driven gear, and the reset mechanism cooperating during a reset operation in one embodiment of this application.

[0071] Figure 11 This is a schematic diagram of the structure of the active driving element, the driven driving element, the driving transmission element and the reset mechanism cooperating during a reset operation in one embodiment of this application;

[0072] Figure 12 This is a schematic diagram of the structure of the driven member, the drive transmission member and the reset mechanism cooperating during a reset operation in one embodiment of this application;

[0073] Figure 13 This is a schematic diagram of the structure of the power source, active drive component, driven component, and drive transmission component of the driven drive component in the second drive state in one embodiment of this application;

[0074] Figure 14 This is a schematic diagram of the structure of the locking groove and the locking block cooperating during the reset operation of the reset mechanism in one embodiment of this application;

[0075] Figure 15 This is a schematic diagram of the structure from another perspective of the locking groove and locking block cooperating when the reset mechanism performs a reset operation in one embodiment of this application.

[0076] Figure 16 This is a cross-sectional view of the self-locking groove and the self-locking protrusion engaging during a reset operation in one embodiment of this application.

[0077] Figure 17 This is a cross-sectional view of the self-locking groove when the reset mechanism performs a reset operation in one embodiment of this application;

[0078] Figure 18 This is a schematic diagram of the internal structure of the self-locking groove and the self-locking protrusion cooperating when the reset mechanism performs a reset operation in one embodiment of this application;

[0079] Figure 19 This is a schematic diagram of the structure of the clutch mechanism connected to the bent rack in the engaged state in one embodiment of this application;

[0080] Figure 20 This is a schematic diagram of the clutch mechanism disengaging from the bent rack in one embodiment of this application.

[0081] Figure 21 This is an exploded view of the clutch mechanism in one embodiment of this application;

[0082] Figure 22 This is a simplified schematic diagram of the power transmission path of a surgical instrument during normal operation in one embodiment of this application;

[0083] Figure 23 This is a simplified schematic diagram of the power transmission path during the repositioning operation of a surgical instrument in one embodiment of this application;

[0084] Figure 24 This is a schematic diagram of the structure in one embodiment of the present application where the cover of the outer shell closes the first opening;

[0085] Figure 25 This is a schematic diagram of the structure of the outer shell with the cover open and the unlocking component switched to the unlocked state in one embodiment of this application;

[0086] Reference numerals: 100, Handle assembly; 110, Active drive component; 111, Drive gear; 120, Driven drive assembly; 121, Driven gear assembly; 122, Driven gear; 123, Shaft component; 130, Drive transmission assembly; 131, Rack assembly; 132, Firing rack; 133, Bending rack; 134, Slot; 140, Drive source; 141, Drive motor; 200, Barrel assembly; 210, Firing transmission mechanism; 211, First firing element; 212, Second firing element; 220, Bending transmission mechanism; 300, Clutch mechanism; 310, Clutch base; 320, Clutch; 321, Clutch channel; 322, Protrusion 323. Clutch body; 324. Clutch retaining ring; 325. Clutch contact part; 400. Actuator assembly; 410. Jaw assembly; 420. Firing member; 421. Cutting blade; 422. Push pin slider; 500. Reset mechanism; 510. Unlocking member; 511. Mounting part; 512. Mounting cavity; 520. Reset member; 530. Locking structure; 531. Locking groove; 532. Locking block; 533. Guide side; 534. Abutting side; 535. Guide slope; 536. Self-locking groove; 537. Self-locking protrusion; 538. Guide arc surface; 600. Outer shell; 610. First opening; 620. Mounting groove; 630. Cover. Detailed Implementation

[0087] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid obscuring the core parts of this application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0088] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0089] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0090] This embodiment provides a surgical instrument.

[0091] Please refer to Figure 1-23 The surgical instrument includes a handle assembly 100, a barrel assembly 200, an actuator assembly 400, and a reset mechanism 500.

[0092] Please continue to refer to this. Figure 1-1322 and 23, the handle assembly 100 includes an active drive member 110, a driven drive assembly 120, and a drive transmission assembly 130. The driven drive assembly 120 is switchable between a first drive state and a second drive state. In the first drive state, the driven drive assembly 120 drives the active drive member 110 and the drive transmission assembly 130, enabling the drive transmission assembly 130 to move based on the rotation of the active drive member 110 and under the drive of the driven drive assembly 120. In the second drive state, the driven drive assembly 120 disengages the drive connection between the active drive member 110 and the drive transmission assembly 130. The proximal end of the barrel assembly 200 is connected to the handle assembly 100. The barrel assembly 200 includes a firing transmission mechanism 210 and a bending transmission mechanism 220. When the drive transmission assembly 130 moves, it can selectively drive at least one of the firing transmission mechanism 210 and the bending transmission mechanism 220.

[0093] The distal end of the barrel assembly 200 is rotatably connected to the actuator assembly 400, which includes a jaw assembly 410 and a firing member 420. The jaw assembly 410 is switchable between an open and a closed state. When the jaw assembly 410 is closed, the firing member 420 moves between the proximal and distal ends of the actuator assembly 400 based on the movement of the drive transmission assembly 130 and driven by the firing transmission mechanism 210. The firing member 420 has a first position along its movement path, which, when in the first position, switches the actuator assembly 400 to a first actuator state that allows the jaw assembly 410 to switch to an open state. When the jaw assembly 410 is open, the actuator assembly 400 is capable of bending movement based on the movement of the drive transmission assembly 130 and driven by the bending transmission mechanism 220. The bending path of the actuator assembly 400 has a second position at a preset angle to the barrel assembly 200. When the actuator assembly 400 bends to the second position, it switches to a second actuator state. The reset mechanism 500 can drive the driven component 120 to switch to a second drive state. In the second drive state, the reset mechanism 500 can drive the driven component 120 to rotate, and through the driven component 120, drive the drive transmission component 130 to move, so that the actuator assembly 400 can switch to a first actuator state when the jaw assembly 410 is closed, through the transmission of the firing transmission mechanism 210, and switch to a second actuator state when the jaw assembly 410 is open, through the transmission of the bending transmission mechanism 220.

[0094] Please continue to refer to this. Figure 1-13In cases 22 and 23, when a transmission failure occurs in the surgical instrument, if the user needs to unlock the fault and reset the state of the actuator assembly 400, the driven component 120 must first be switched to the second drive state via the reset mechanism 500 to unlock the fault. Then, the driven component 120 is rotated via the reset mechanism 500, which in turn drives the drive transmission component 130 to move. Next, with the jaw assembly 410 in the closed state, the movement of the drive transmission component 130 drives the firing transmission mechanism 210 to move, which in turn drives the firing member 420 to move to the first position. At this point, the actuator assembly 400 switches to the first actuator state, allowing the jaw assembly 410 to switch to the open state. After switching the jaw assembly 410 to the open state, the user can continue to drive the driven component 120 to rotate through the reset mechanism 500, and drive the drive transmission component 130 to move through the driven component 120. Then, the drive transmission component 130 drives the bending transmission mechanism 220 to move through the bending transmission mechanism 220, and then drives the actuator assembly 400 to bend to the second position through the bending transmission mechanism 220. At this time, the jaw assembly 410 switches to the second actuator state, thereby achieving the purpose of resetting the actuator assembly 400 to the first actuator state and the second actuator state.

[0095] It should be noted that the firing member 420 can be a single cutting blade 421, or it can include a cutting blade 421 and a pusher slider 422 connected to the cutting blade 421. The movement of the firing member 420 between the proximal and distal ends of the actuator assembly 400 can be limited to the movement of only the cutting blade 421, only the pusher slider 422, or both the cutting blade 421 and the pusher slider 422. The "first position" is typically the initial position of the firing member 420 when it is not fired, and the "second position" is typically the position where the actuator assembly 400 forms a 0° angle with the barrel assembly 200. The reset mechanism 500 is configured to be manually operable, that is, the user can manually operate the reset mechanism 500 to unlock the fault and reset the actuator assembly 400 to the first actuator state and the second actuator state. In this embodiment, "distal end" refers to the end away from the operator when operating a surgical instrument, and "proximal end" refers to the end closer to the operator when operating a surgical instrument.

[0096] Please refer to Figure 1-11In one embodiment, as shown in 19-21, the handle assembly 100 further includes a clutch mechanism 300, and the drive transmission assembly 130 is configured as a rack assembly 131, which includes a firing rack 132 and a bending rack 133. The clutch mechanism 300 is switchable between an engaged state and a disengaged state. In the engaged state, the clutch mechanism 300 drives the bending rack 133 to the bending transmission mechanism 220. In the disengaged state, the clutch mechanism 300 releases the drive connection between the bending rack 133 and the bending transmission mechanism 220. When the clutch mechanism 300 is in the disengaged state, the reset mechanism 500 can move the firing rack 132 and the bending rack 133 to move the firing member 420 to a first position based on the movement of the firing rack 132 and under the drive of the firing transmission mechanism 210. When the clutch mechanism 300 is engaged, the reset mechanism 500 can drive the firing rack 132 and the bending rack 133 to move, so that the actuator assembly 400 can bend to the second position based on the movement of the bending rack 133 and under the transmission of the bending transmission mechanism 220.

[0097] When the user needs to reset the actuator assembly 400 to the first actuator state, the clutch mechanism 300 can be switched to the disengaged state, thereby disengaging the transmission connection between the bending rack 133 and the bending transmission mechanism 220. Then, the reset mechanism 500 drives the firing rack 132 and the bending rack 133 to move, and the firing rack 132 drives the firing transmission mechanism 210 to move. In turn, the firing transmission mechanism 210 drives the firing member 420 to move to the first position, thereby resetting the actuator assembly 400 to the first actuator state and avoiding the bending rack 133 from simultaneously driving the actuator assembly 400 to bend. When the user needs to reset the actuator assembly 400 to the second actuator state, the clutch mechanism 300 can be switched to the engaged state. The clutch mechanism 300 connects the bending rack 133 to the bending transmission mechanism 220. Then, the reset mechanism 500 drives the firing rack 132 and the bending rack 133 to move. The bending rack 133 then drives the bending transmission mechanism 220 to move, which in turn drives the actuator assembly 400 to bend to the second position, thereby resetting the actuator assembly 400 to the second actuator state.

[0098] It is understood that in this embodiment, the active drive component 110, the driven drive component 120, and the drive transmission component 130 are configured as a gear and rack drive structure. In other embodiments, they can also be replaced with a lead screw and slider drive structure or other suitable drive structures.

[0099] Please refer to Figure 1-12In one embodiment, the reset mechanism 500 includes an unlocking member 510 and a reset member 520. The active drive member 110 is configured as a drive gear 111, the driven drive assembly 120 is configured as a driven gear assembly 121, and the drive transmission assembly 130 is configured as a rack assembly 131. The unlocking member 510 can switch from a locked state to an unlocked state, thereby driving the driven gear assembly 121 from a first drive state to a second drive state. The unlocking member 510 has a mounting portion 511, and the reset member 520 is movably mounted on the mounting portion 511. When the unlocking member 510 is in the unlocked state, the reset member 520 can engage with the driven gear assembly 121 and drive the driven gear assembly 121 to rotate, thereby driving the rack assembly 131 to move, thus switching the actuator assembly 400 to a first actuator state and a second actuator state.

[0100] On the one hand, when it is necessary to reset the actuator assembly 400 to the first actuator state and the second actuator state, the user can first switch the unlocking member 510 from the locked state to the unlocked state, thereby driving the driven gear assembly 121 from the first drive state to the second drive state to achieve fault unlocking. Then, the reset member 520 is engaged with the driven gear assembly 121, and the reset member 520 drives the driven gear assembly 121 to rotate, which in turn drives the rack assembly 131 to move, so that the actuator assembly 400 switches to the first actuator state and the second actuator state. On the other hand, since the reset member 520 is installed in the mounting part 511 of the unlocking member 510, the user's additional operation of taking out the reset member 520 can be reduced, thereby simplifying the user's operation. Specifically, the driving gear 111 can be connected to the drive source 140, and the drive source 140 can drive the driving gear 111 to rotate. The drive source 140 can be a drive motor 141.

[0101] Please refer to Figure 1-12 In one embodiment, the driven drive assembly 120 includes a driven gear 122 and a rotating shaft 123. The rotating shaft 123 is coaxially connected to the driven gear 122, and an unlocking member 510 is rotatably connected to the rotating shaft 123. In the locked state, the unlocking member 510 forms a first angle with the rotating shaft 123; in the unlocked state, it forms a second angle with the rotating shaft 123. When the unlocking member 510 switches from the locked state to the unlocked state, it rotates relative to the rotating shaft 123 from the first angle to the second angle, and through the rotating shaft 123, drives the driven gear 122 axially away from the driving gear 111 until they separate, thereby switching the driven gear assembly 121 to the second drive state.

[0102] When the reset mechanism 500 is needed, the user can rotate the unlocking member 510, causing it to rotate relative to the rotating shaft 123 from a first angle to a second angle. This, through the rotating shaft 123, drives the driven gear 122 axially away from the driving gear 111 until they separate, thus switching the driven gear assembly 121 to a second driving state, thereby achieving fault unlocking. Specifically, in this embodiment, the first angle is approximately 90°, and the second angle is approximately 0°. In other embodiments, the first and second angles can also be 30°, 60°, or other suitable angles.

[0103] Please refer to Figure 1-12 In one embodiment, 16 and 17, the mounting portion 511 is configured as a through mounting cavity 512, and at least a portion of the reset member 520 is movably disposed within the mounting cavity 512. When the unlocking member 510 is switched to the unlocked state, the end of the reset member 520 near the rotating shaft 123 can pass through the mounting cavity 512 and engage with the rotating shaft 123, so that the reset member 520 can rotate within the mounting cavity 512 and drive the driven gear 122 to rotate via the rotating shaft 123.

[0104] When using the reset mechanism 500, after the user switches the unlocking member 510 to the unlocked state, the end of the reset member 520 near the rotating shaft 123 can then pass through the mounting cavity 512, engaging the reset member 520 with the rotating shaft 123. The user can then rotate the reset member 520 within the mounting cavity 512, driving the driven gear 122 to rotate via the rotating shaft 123. Specifically, the reset member 520 and the rotating shaft 123 can be engaged via a snap-fit, interference fit, magnetic fit, or other suitable connection method. The connection between the rotating shaft 123 and the unlocking member 510 is configured as an axial transmission connection along the rotating shaft 123, but this does not affect the rotation of the rotating shaft 123 relative to the unlocking member 510.

[0105] For details, please refer to Figure 9-13 When the surgical instruments are working normally, the drive source 140 and the driving gear 111 drive the driven gear 122 along... Figure 9 and Figure 13 Rotating in the direction indicated by the middle arrow R2 or R4, causing the rack assembly 131 to rotate along... Figure 9 and Figure 13 The linear motion indicated by the middle arrow L1. Please refer to... Figure 10 The unlocking element 510 can be a housing (not shown) movably connected to the handle assembly 100. When the unlocking element 510 rotates relative to the housing, the connection between the unlocking element 510 and the pivot 123 moves along... Figure 10The movement is in the direction indicated by the middle arrow L3. The housing may have a mounting slot (not shown), in which the unlocking member 510 is movably disposed. When the reset mechanism 500 is not in use, both the unlocking member 510 and the reset member 520 are enclosed in the mounting slot by a cover plate. When the reset mechanism 500 needs to be operated, the cover plate is opened first, and then the reset mechanism 500 is moved along... Figure 10 Middle arrow L2 or Figure 11 Rotate the device in the direction indicated by the middle arrow R3 to the upright position, so that the unlocking component 510 switches to the unlocked state. When the end of the reset component 520 and the end of the pivot component 123 are respectively a polygonal screw and a corresponding polygonal groove, it is necessary to continue along... Figure 11 Rotate the reset member 520 in the direction shown by R1 (or the opposite) to align the two. Press the reset member 520 during this process to engage it with the rotating shaft 123. Then rotate the reset member 520 along... Figure 12 Rotating in the direction indicated by the middle arrow R1 (or the opposite), thereby driving the rotating shaft 123 along... Figure 12 Rotating in the direction indicated by the middle arrow R2, thereby driving the rack assembly 131 along... Figure 12 The linear motion of the line indicated by the middle arrow L1.

[0106] Please refer to Figure 1-11 In one embodiment, the surgical instrument further includes a locking structure 530 for preventing the unlocking member 510 from rotating relative to the pivot member 123 from a second angle to a first angle, thereby preventing the unlocking member 510 from switching from an unlocked state to a locked state.

[0107] When the user switches the unlocking component 510 to the unlocked state, the added locking structure 530 generates a force that prevents the unlocking component 510 from rotating relative to the rotating shaft 123 from the second angle to the first angle. This prevents the unlocking component 510 from switching from the unlocked state to the locked state, thus avoiding the user accidentally switching the unlocking component 510 to the locked state when rotating the reset component 520, which would affect the operation of the reset mechanism 500.

[0108] Please refer to Figure 1-11 In one embodiment, the locking structure 530 includes a locking groove 531 and a locking block 532, wherein the locking block 532 is used to engage with the locking groove 531 when the unlocking member 510 is switched to the unlocked state, so as to generate a resisting force that prevents the unlocking member 510 from rotating relative to the pivot member 123 from a second angle to a first angle.

[0109] When the user switches the unlocking component 510 to the unlocked state, the locking block 532 engages with the locking groove 531, thereby generating a resisting force that prevents the unlocking component 510 from rotating relative to the pivot component 123 from a second angle to a first angle. In other embodiments, the locking structure 530 may also employ a damping structure, a magnetic structure, or other suitable structure to generate the aforementioned resisting force.

[0110] Please refer to Figure 1-11 In one embodiment, 14 and 15, the locking block 532 has a guide side 533 and an abutment side 534 disposed opposite to each other. The guide side 533 has a guide ramp 535, which guides the locking block 532 into the locking groove 531 when the unlocking member 510 rotates relative to the pivot member 123 from a first angle to a second angle. The abutment side 534 abuts against the inner wall of the locking groove 531 when the locking block 532 engages with the locking groove 531, thereby generating a resisting force that prevents the unlocking member 510 from rotating relative to the pivot member 123 from the second angle to the first angle.

[0111] During the process of the user switching the unlocking component 510 from the locked state to the unlocked state, the guide slope 535 guides the movement of the locking block 532 into the locking groove 531, thereby reducing the resistance of the unlocking component 510 in switching from the locked state to the unlocked state. When the unlocking component 510 is switched to the unlocked state, the contact side 534 abuts against the inner wall of the locking groove 531, thereby generating a resisting force that prevents the unlocking component 510 from rotating relative to the rotating shaft 123 from the second angle to the first angle. This helps to prevent the user from accidentally switching the unlocking component 510 from the unlocked state to the locked state during the operation of the reset mechanism 500.

[0112] Please refer to Figure 1-11 In one embodiment, as shown in 16-18, the locking structure 530 includes a self-locking groove 536 and a self-locking protrusion 537. The self-locking protrusion 537 abuts against the self-locking groove 536 when the unlocking member 510 switches to the unlocked state, generating a resisting force that prevents the unlocking member 510 from rotating relative to the pivot member 123 from a second angle to a first angle. The self-locking protrusion 537 has a guide arc surface 538, which guides the self-locking protrusion 537 into the self-locking groove 536 and abuts against it when the unlocking member 510 rotates relative to the pivot member 123 from a first angle to a second angle.

[0113] During the process of the user switching the unlocking component 510 from the locked state to the unlocked state, the guide arc surface 538 guides the movement of the self-locking protrusion 537 into the self-locking groove 536, thereby reducing the resistance of the unlocking component 510 in switching from the locked state to the unlocked state. After the unlocking component 510 is switched to the unlocked state, the self-locking protrusion 537 enters the self-locking groove 536 and abuts against the self-locking groove 536, generating a resisting force that prevents the unlocking component 510 from rotating relative to the rotating shaft 123 from the second angle to the first angle, thereby helping to prevent the user from accidentally switching the unlocking component 510 from the unlocked state to the locked state during the operation of the reset mechanism 500.

[0114] It is understood that the two locking structures 530 described above can be used individually or in combination. For example, when used in combination, the self-locking groove 536 and the self-locking protrusion 537 can be located inside the unlocking member 510, while the locking block 532 and the locking groove 531 can be located outside the unlocking member 510.

[0115] Please refer to Figure 1-11 In one embodiment, the driven drive assembly 120 is configured as a driven gear assembly 121, and the drive transmission assembly 130 is configured as a rack assembly 131. The driven gear assembly 121 includes a single driven gear 122. When the driven drive assembly 120 is in a first driving state, the driven gear 122 meshes with the driving gear 111. When the driven drive assembly 120 is in a second driving state, the driven gear 122 disengages from the driving gear 111. Furthermore, in both the first and second driving states, the driven gear 122 meshes with the rack assembly 131.

[0116] On the one hand, when using the reset mechanism 500, the user can use the unlocking component 510 to switch the driven drive assembly 120 from the first drive state to the second drive state, thereby switching the driven gear 122 from a state of engagement with the driving gear 111 to a state of disengagement from the driving gear 111. On the other hand, configuring the driven gear assembly 121 as a single driven gear 122 simplifies the structure of the driven gear assembly 121, thereby reducing the failure rate of the driven gear assembly 121. In other embodiments, the driven gear assembly 121 may also include multiple gears, as long as the transmission purpose can be achieved.

[0117] Please refer to Figure 1-11 In one embodiment, the surgical instrument further includes a closing locking mechanism (not shown) that is switchable between a locked state and a released state. When the jaw assembly 410 is in the closed state, the closing locking mechanism can switch to the locked state to keep the jaw assembly 410 closed. When the firing member 420 is in the first position, the closing locking mechanism can switch to the released state to switch the jaw assembly 410 to the open state.

[0118] On one hand, when the jaw assembly 410 is in the closed state, the closing locking mechanism can be switched to the locked state, thereby keeping the jaw assembly 410 in the closed state. On the other hand, when the user needs to switch the jaw assembly 410 from the closed state to the open state, the firing member 420 must first be moved to the first position, that is, the actuator assembly 400 must be switched to the first actuator state. Then, the closing locking mechanism is switched from the locked state to the released state, thereby switching the jaw assembly 410 to the open state.

[0119] Please refer to Figure 1-11 In one embodiment, as described in 19-21, the clutch mechanism 300 includes a clutch base 310 and a clutch 320. The clutch base 310 is connected to the proximal end of the bending transmission mechanism 220, and the clutch 320 is movably connected to the clutch base 310. The clutch 320 is movable between an engaged position and a disengaged position. When the clutch 320 moves to the engaged position, the clutch mechanism 300 switches to the engaged state; when the clutch 320 moves to the disengaged position, the clutch mechanism 300 switches to the disengaged state. Specifically, the clutch 320 is rotatable about a first axis to rotate to the engaged and disengaged positions. In this embodiment, the first axis is generally parallel to the barrel assembly 200. In other embodiments, the movement of the clutch 320 may be linear or other suitable.

[0120] Please refer to Figure 1-11 In one embodiment, as shown in 19-21, the clutch 320 has a clutch channel 321 extending along a first axis at its center, and a protrusion 322 is provided on the inner wall of the clutch channel 321. The rack 133 has a slot 134, the movement of which allows the slot 134 to extend into the clutch channel 321. The protrusion 322 is used to engage with the slot 134 in the clutch channel 321 when the clutch 320 is rotated to the engaged position, and to disengage from the slot 122 when the clutch 320 is rotated to the disengaged position. Specifically, the clutch 320 may include a clutch body 323, a clutch retaining ring 324, and a clutch contact portion 325, which are fixedly connected.

[0121] Please refer to Figure 1-11In one embodiment, the firing transmission mechanism 210 includes a first firing element 211 and a second firing element 212. The distal end of the first firing element 211 is connected to the firing member 420, and the proximal end of the second firing element 212 is connected to the firing rack 132. The proximal end of the first firing element 211 and the distal end of the second firing element 212 are disposed opposite to each other. When the clutch mechanism 300 is engaged, the first firing element 211 can move closer to and further away from the second firing element 212 under the drive of the firing drive member 130, and a gap is formed between the first firing element 211 and the second firing element 212. When the clutch mechanism 300 is disengaged, the first firing element 211 can move under the drive of the firing drive member 130 to engage with the second firing element 212, thereby driving the second firing element 212 and the firing member 420 to move.

[0122] When the user operates the actuator assembly 400 to perform a bending motion, the clutch mechanism 300 is engaged. The drive source 110 drives the bending rack 133 and the firing rack 132 to move simultaneously, and the firing rack 132 drives the first firing element 211 to move. At this time, because a gap is reserved between the first firing element 211 and the second firing element 212, the first firing element 211 will not drive the second firing element 212 and the firing component 420 to move, thereby avoiding the actuator assembly 400 being fired during bending. When the user operates the actuator assembly 400 to perform a firing motion, the clutch mechanism 300 is disengaged. The first firing element 211 can move under the drive of the firing rack 132 to engage with the second firing element 212, thereby driving the second firing element 212 and the firing component 420 to move, thus realizing the firing motion of the actuator assembly 400.

[0123] On the other hand, this embodiment also provides a surgical instrument.

[0124] Please refer to Figure 1-23 The surgical instrument includes a handle assembly 100, a barrel assembly 200, an actuator assembly 400, and a reset mechanism 500.

[0125] Please refer to Figure 1-11 The handle assembly 100 includes a drive gear 111, a single driven gear 122, and a rack assembly 131. The driven gear 122 is switchable between a first driving state and a second driving state. In the first driving state, the driven gear 122 meshes with the drive gear 111; in the second driving state, the driven gear 122 disengages from the drive gear 111, and in both the first and second driving states, the driven gear 122 meshes with the rack assembly 131. When switched to the first driving state, the driven gear 122 rotates with the drive gear 111 to drive the rack assembly 131.

[0126] The proximal end of the barrel assembly 200 is connected to the handle assembly 100 for transmitting the movement of the rack assembly 131. The distal end of the barrel assembly 200 is connected to the actuator assembly 400, which includes a jaw assembly 410 and a firing member 420. The jaw assembly 410 is switchable between an open and a closed state. When the jaw assembly 410 is in the closed state, the firing member 420, based on the movement of the rack assembly 131 and driven by the barrel assembly 200, moves between the proximal and distal ends of the actuator assembly 400. The firing member 420 has a first position along its movement path. When the firing member 420 is in the first position, the actuator assembly 400 is switched to a first actuator state that allows the jaw assembly 410 to switch to the open state.

[0127] Please continue to refer to this. Figure 1-11 16 and 17, the reset mechanism 500 includes an unlocking member 510 and a reset member 520. The unlocking member 510 can switch from a locked state to an unlocked state to drive the driven gear 122 from a first driving state to a second driving state. The unlocking member 510 has a mounting portion 511, and the reset member 520 is movably mounted on the mounting portion 511. When the unlocking member 510 is in the unlocked state, the reset member 520 can cooperate with the driven gear assembly 121 and drive the driven gear assembly 121 to rotate, so that the driven gear assembly 121 drives the rack assembly 131 to move, thereby switching the actuator assembly 400 to the first actuator state.

[0128] On the one hand, when a transmission failure occurs in the surgical instrument, if the user needs to unlock the fault and reset the state of the actuator assembly 400, the driven component 120 needs to be switched to the second drive state by the reset mechanism 500 to unlock the fault. Then, the driven component 120 is rotated by the reset mechanism 500, which in turn drives the drive transmission component 130. Next, with the jaw assembly 410 in the closed state, the movement of the drive transmission component 130 drives the firing transmission mechanism 210, which in turn drives the firing member 420 to the first position. At this point, the actuator assembly 400 switches to the first actuator state, allowing the jaw assembly 410 to switch to the open state. On the other hand, since the reset member 520 is installed within the mounting portion 511 of the unlocking member 510, the user's need to manually retrieve the reset member 520 is reduced, thus simplifying the user's operation.

[0129] On the other hand, this embodiment also provides a surgical instrument.

[0130] Please refer to Figure 1-23 The surgical instrument includes a handle assembly 100, a barrel assembly 200, an actuator assembly 400, and a reset mechanism 500.

[0131] Please refer to Figure 1-11 The handle assembly 100 includes a drive gear 111, a single driven gear 122, and a rack assembly 131. The driven gear 122 is switchable between a first driving state and a second driving state. In the first driving state, the driven gear 122 meshes with the drive gear 111; in the second driving state, the driven gear 122 disengages from the drive gear 111, and in both states, it meshes with the rack assembly 131. When switched to the first driving state, the driven gear assembly 121 rotates with the drive gear 111 to drive the rack assembly 131. The proximal end of the barrel assembly 200 is connected to the handle assembly 100 to transmit the movement of the rack assembly 131. The distal end of the barrel assembly 200 is connected to the actuator assembly 400, which includes a jaw assembly 410 and a firing member 420. The jaw assembly 410 is switchable between an open state and a closed state.

[0132] With the jaw assembly 410 in the closed state, the firing member 420 can move between the proximal and distal ends of the actuator assembly 400 based on the movement of the rack assembly 131 and driven by the barrel assembly 200. When the rack assembly 131 moves closer to the barrel assembly 200, the barrel assembly 200 drives the firing member 420 towards the distal end of the actuator assembly 400. When the rack assembly 131 moves away from the barrel assembly 200, the barrel assembly 200 drives the firing member 420 to a first position, causing the actuator assembly 400 to switch to a first actuator state that allows the jaw assembly 410 to switch to the open state.

[0133] Please continue to refer to this. Figure 1-11 The reset mechanism 500 can drive the driven gear 122 to switch to the second driving state. When the driven gear 122 switches to the second driving state, the reset mechanism 500 can selectively drive the driven gear 122 to rotate in opposite first and second directions. When the driven gear 122 rotates in the first direction, it drives the rack assembly 131 to move closer to the barrel assembly 200, thereby driving the firing member 420 to move toward the distal end of the actuator assembly 400. When the driven gear 122 rotates in the second direction, it drives the rack assembly 131 to move away from the barrel assembly 200, thereby switching the jaw assembly 410 to the first actuator state.

[0134] On the one hand, when a transmission failure occurs in the surgical instrument, if the user needs to unlock the fault and reset the state of the actuator assembly 400, the driven component 120 needs to be switched to the second drive state via the reset mechanism 500 to unlock the fault. Then, the driven component 120 is rotated via the reset mechanism 500, which in turn drives the drive transmission component 130. Next, with the jaw assembly 410 in the closed state, the movement of the drive transmission component 130 drives the firing transmission mechanism 210, which in turn drives the firing member 420 to the first position. At this point, the actuator assembly 400 switches to the first actuator state, allowing the jaw assembly 410 to switch to the open state. On the other hand, using a single driven gear 122 to achieve transmission between the drive gear 111 and the rack assembly 131 simplifies the transmission structure and reduces the transmission failure rate.

[0135] On the other hand, this embodiment also provides a surgical instrument.

[0136] Please refer to Figure 1-23 The surgical instrument includes a handle assembly 100, a barrel assembly 200, an actuator assembly 400, and an operating mechanism.

[0137] Please refer to Figure 1-11 The handle assembly 100 includes an active drive member 110, a driven drive assembly 120, and a drive transmission assembly 130. The driven drive assembly 120 is switchable between a first drive state and a second drive state. In the first drive state, the driven drive assembly 120 drives the active drive member 110 and the drive transmission assembly 130, enabling the drive transmission assembly 130 to move based on the rotation of the active drive member 110 and under the transmission of the driven drive assembly 120. In the second drive state, the driven drive assembly 120 disengages the drive connection between the active drive member 110 and the drive transmission assembly 130. The proximal end of the barrel assembly 200 is connected to the handle assembly 100 to transmit the movement of the drive transmission assembly 130. The distal end of the barrel assembly 200 is rotatably connected to the actuator assembly 400, which includes a jaw assembly 410 and a firing member 420. The jaw assembly 410 is switchable between an open state and a closed state.

[0138] Please continue to refer to this. Figure 1-11When the jaw assembly 410 is in the open state and the driven assembly 120 is in the first drive state, the actuator assembly 400 can perform a bending motion based on the rotation of the driving member 110 and under the transmission of the drive transmission assembly 130 and the barrel assembly 200. The operating mechanism can drive the driven assembly 120 to switch to the second drive state. When the driven assembly 120 is in the second drive state and the jaw assembly 410 is in the open state, the operating mechanism can drive the driven assembly 120 to rotate, and through the driven assembly 120, drive the drive transmission assembly 130 to move, so that the actuator assembly 400 can perform a bending motion.

[0139] When the user operates the mechanism, the jaw assembly 410 needs to be switched to the open state, and the driven component 120 is switched to the second drive state through the operating mechanism. Then, the driven component 120 is rotated through the operating mechanism, and the drive transmission component 130 is moved through the driven component 120, so that the actuator assembly 400 can perform a bending motion.

[0140] It should be noted that the "operating mechanism" can be operated manually. When the "operating mechanism" is used in an application environment that resets the actuator component 400, the "operating mechanism" can be considered equivalent to the "reset mechanism 500".

[0141] On the other hand, this embodiment also provides a surgical instrument.

[0142] Please refer to Figure 1-25 The surgical instrument includes a handle assembly 100, a barrel assembly 200, an actuator assembly 400, a reset mechanism 500, and a housing 600.

[0143] refer to Figure 1-13 22 and 23, the handle assembly 100 includes an active drive member 110, a driven drive assembly 120, and a drive transmission assembly 130. The driven drive assembly 120 is switchable between a first drive state and a second drive state. In the first drive state, the driven drive assembly 120 drives the active drive member 110 and the drive transmission assembly 130, enabling the drive transmission assembly 130 to move based on the rotation of the active drive member 110 and under the transmission of the driven drive assembly 120. In the second drive state, the driven drive assembly 120 disengages the drive connection between the active drive member 110 and the drive transmission assembly 130. The proximal end of the barrel assembly 200 is connected to the handle assembly 100 for transmitting the movement of the drive transmission assembly 130. The distal end of the barrel assembly 200 is connected to the actuator assembly 400, which includes a jaw assembly 410 and a firing member 420. The jaw assembly 410 is switchable between an open state and a closed state.

[0144] With the jaw assembly 410 in the closed state, the firing member 420 can move between the proximal and distal ends of the actuator assembly 400 based on the movement of the drive transmission assembly 130 and under the transmission of the barrel assembly 200. The firing member 420 has a first position along its movement path. When the firing member 420 is in the first position, it switches the actuator assembly 400 to a first actuator state that allows the jaw assembly 410 to switch to the open state. The reset mechanism 500 includes an unlocking member 510 and a reset member 520. The unlocking member 510 can switch from a locked state to an unlocked state to drive the driven drive assembly 120 from a first drive state to a second drive state. The reset member 520 can cooperate with the driven drive assembly 120 when the unlocking member 510 is in the unlocked state, and drive the driven drive assembly 120 to rotate, thereby driving the drive transmission assembly 130 to move, thus switching the actuator assembly 400 to the first actuator state.

[0145] Combination Figure 24 and Figure 25 The housing 600 has a first opening 610. The driven assembly 120 includes a pivot 123. When the unlocking member 510 is in the locked state, the pivot 123 is located inside the housing 600. When the unlocking member 510 switches from the locked state to the unlocked state, it drives the pivot 123 to move toward the first opening 610, and at least a portion of the pivot 123 extends out of the first opening 610.

[0146] By providing a first opening 610 on the housing 600, at least a portion of the pivot member 123 extends out of the first opening 610 when the unlocking member 510 switches from the locked state to the unlocked state. This improves the space utilization outside the first opening 610, thereby helping to reduce the size of surgical instruments. Specifically, the first opening 610 may be located as follows: Figure 24 and Figure 25 The upper part of the housing 600 is shown. The first opening 610 can directly connect the inside and outside of the housing, or the first opening 610 can be connected to a mounting groove 620, thereby indirectly connecting to the outside of the housing through the mounting groove 620.

[0147] Please refer to Figure 1-13 In one embodiment, the housing 600 further has a mounting groove 620, at least a portion of the reset mechanism 500 is disposed within the mounting groove 620, and a first opening 610 communicates with the mounting groove 620. When the unlocking member 510 is in the unlocked state, at least a portion of the pivot member 123 extends from the first opening 610 into the mounting groove 620.

[0148] On the one hand, when the reset mechanism 500 is not needed, the mounting slot 620 at least partially accommodates the reset mechanism 500, thereby achieving storage of the reset mechanism 500 on the housing 600. On the other hand, when the reset mechanism 500 is used, at least a portion of the pivot member 123 extends from the first opening 610 into the mounting slot 620, thereby reusing the space of the mounting slot 620, which helps to reduce the size of the surgical instrument. Of course, when the unlocking member 510 is in the unlocked state, the pivot member 123 can also be further configured to extend at least partially from the mounting slot 620 to the outside of the housing 600.

[0149] On the other hand, this embodiment also provides a surgical instrument.

[0150] Please refer to Figure 1-23 The surgical instrument includes a handle assembly 100, a barrel assembly 200, an actuator assembly 400, a reset mechanism 500, and a housing 600.

[0151] refer to Figure 1-13 22 and 23, the handle assembly 100 includes an active drive member 110, a driven drive assembly 120, and a drive transmission assembly 130. The driven drive assembly 120 is switchable between a first drive state and a second drive state. In the first drive state, the driven drive assembly 120 drives the active drive member 110 and the drive transmission assembly 130, enabling the drive transmission assembly 130 to move based on the rotation of the active drive member 110 and under the transmission of the driven drive assembly 120. In the second drive state, the driven drive assembly 120 disengages the drive connection between the active drive member 110 and the drive transmission assembly 130. The proximal end of the barrel assembly 200 is connected to the handle assembly 100 for transmitting the movement of the drive transmission assembly 130.

[0152] The distal end of the barrel assembly 200 is connected to the actuator assembly 400, which includes a jaw assembly 410 and a firing member 420. The jaw assembly 410 is switchable between an open and a closed state. When the jaw assembly 410 is in the closed state, the firing member 420, driven by the movement of the drive transmission assembly 130 and the barrel assembly 200, moves between the proximal and distal ends of the actuator assembly 400. The firing member 420 has a first position along its movement path. When the firing member 420 is in the first position, the actuator assembly 400 is switched to a first actuator state that allows the jaw assembly 410 to switch to the open state. The reset mechanism 500 includes an unlocking member 510 and a reset member 520. The unlocking member 510 is switchable from a locked state to an unlocked state to drive the driven drive assembly 120 from a first drive state to a second drive state. The reset component 520 can cooperate with the driven component 120 when the unlocking component 510 is in the unlocked state, and drive the driven component 120 to rotate, so that the driven component 130 can move through the driven component 120, so that the actuator component 400 switches to the first actuator state.

[0153] Combination Figure 24 and 25 The housing 600 has a mounting slot 620 and a cover 630 for opening and closing the mounting slot 620. When the unlocking member 510 is in the locked state, the reset mechanism 500 is located within the mounting slot 620, allowing the cover 630 to close the mounting slot 620. When the unlocking member 510 is in the unlocked state, at least a portion of the reset mechanism 500 extends out of the mounting slot 620, and the unlocking member 510 is subjected to a force that prevents it from switching to the unlocked state, thus preventing the cover 630 from closing the mounting slot 620.

[0154] On the one hand, when the reset mechanism 500 is not needed, it is stored in the mounting slot 620 and closed by the cover 630. This prevents accidental activation of the reset mechanism 500 by the user, protects the reset mechanism 500, and maintains the flatness of the housing 600. On the other hand, when the unlocking member 510 switches to the unlocked state, at least a portion of the reset mechanism 500 extends out of the mounting slot 620, and the unlocking member 510 is subjected to a force that prevents it from switching to the unlocked state. This prevents the user from closing the mounting slot 620 again after using the reset mechanism 500 and using surgical instruments again, thus avoiding the surgical risks caused by reusing a faulty device.

[0155] Please refer to Figure 14-18 In one embodiment, the surgical instrument further includes a locking structure 530 for preventing the unlocking member 510 from switching from an unlocked state to a locked state.

[0156] The locking structure 530 generates a force that prevents the unlocking member 510 from switching to the unlocked state. Specifically, the locking structure 530 may include the locking groove 531 and locking block 532 mentioned above, as well as the self-locking groove 536 and guide arc surface 538 mentioned above, and may also include other suitable locking components.

[0157] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. A surgical instrument, characterized in that, include: The handle assembly includes an active drive component, a driven drive component, and a drive transmission component; The driven component can switch between a first driving state and a second driving state. In the first driving state, the driven component connects the active driving member to the drive transmission component, so that the drive transmission component can move based on the rotation of the active driving member and under the transmission of the driven component. In the second driving state, the driven component disconnects the drive connection between the active driving member and the drive transmission component. A barrel assembly, the proximal end of which is connected to the handle assembly, the barrel assembly including a firing transmission mechanism and a bending transmission mechanism, wherein the drive transmission assembly can selectively drive at least one of the firing transmission mechanism and the bending transmission mechanism to move when it moves. An actuator assembly, wherein the distal end of the barrel assembly is rotatably connected to the actuator assembly, the actuator assembly including a jaw assembly and a firing member, the jaw assembly being switchable between an open state and a closed state; When the jaw assembly is in the closed state, the firing member can move between the proximal and distal ends of the actuator assembly based on the movement of the drive transmission assembly and under the transmission of the firing transmission mechanism; the firing member has a first position on its movement path, and when the firing member is in the first position, the actuator assembly is switched to a first actuator state that allows the jaw assembly to switch to the open state; When the jaw assembly is in the open state, the actuator assembly can perform a bending motion based on the movement of the drive transmission assembly and under the transmission of the bending transmission mechanism; the bending path of the actuator assembly has a second position at a preset angle with the barrel assembly, and when the actuator assembly bends to the second position, the actuator assembly switches to a second actuator state; The system includes a reset mechanism that can drive the driven component to switch to the second driving state. In the second driving state, the reset mechanism can drive the driven component to rotate and drive the drive transmission component to move, so that the actuator component can switch to the first actuator state when the jaw assembly is in the closed state through the transmission of the firing transmission mechanism, and switch to the second actuator state when the jaw assembly is in the open state through the transmission of the bending transmission mechanism.

2. The surgical instrument as described in claim 1, characterized in that, The handle assembly further includes a clutch mechanism, and the drive transmission assembly is configured as a rack assembly, the rack assembly including a firing rack and a bending rack; the clutch mechanism is capable of switching between an engaged state and a disengaged state, in the engaged state the clutch mechanism drives the bending rack to the bending transmission mechanism; in the disengaged state the clutch mechanism releases the drive connection between the bending rack and the bending transmission mechanism. When the clutch mechanism is in the disengaged state, the reset mechanism can drive the firing rack and the bending rack to move, so that the firing component can move to the first position based on the movement of the firing rack and under the transmission of the firing transmission mechanism; when the clutch mechanism is in the engaged state, the reset mechanism can drive the firing rack and the bending rack to move, so that the actuator assembly can bend to the second position based on the movement of the bending rack and under the transmission of the bending transmission mechanism.

3. The surgical instrument as described in claim 1, characterized in that, The reset mechanism includes an unlocking component and a reset component. The active driving component is configured as an active gear, the driven component is configured as a driven gear assembly, and the drive transmission component is configured as a rack assembly. The unlocking component can switch from a locked state to an unlocked state to drive the driven gear assembly to switch from the first driving state to the second driving state. The unlocking component has a mounting portion, and the reset component is movably mounted on the mounting portion; the reset component can cooperate with the driven gear assembly when the unlocking component is in the unlocked state, and drive the driven gear assembly to rotate, so as to drive the rack assembly to move through the driven gear assembly, so as to switch the actuator assembly to the first actuator state and the second actuator state.

4. The surgical instrument as described in claim 3, characterized in that, The driven component includes a driven gear and a rotating shaft. The rotating shaft is coaxially connected to the driven gear, and the unlocking component is rotatably connected to the rotating shaft. In the locked state, the unlocking component forms a first angle with the rotating shaft, and in the unlocked state, the unlocking component forms a second angle with the rotating shaft. When the unlocking member switches from the locked state to the unlocked state, it rotates relative to the rotating shaft from a first angle to a second angle, and drives the driven gear to move away from the driving gear along its axial direction until they are separated, so that the driven gear assembly switches to the second driving state.

5. The surgical instrument as described in claim 4, characterized in that, The mounting part is configured as a through mounting cavity, and at least a portion of the reset member is movably disposed within the mounting cavity; when the unlocking member is switched to the unlocked state, one end of the reset member near the rotating shaft can pass through the mounting cavity and engage with the rotating shaft, so that the reset member can rotate within the mounting cavity and drive the driven gear to rotate through the rotating shaft.

6. The surgical instrument as described in claim 4, characterized in that, It also includes a locking structure for preventing the unlocking member from rotating relative to the pivot member from a second angle to a first angle, thereby preventing the unlocking member from switching from the unlocked state to the locked state.

7. The surgical instrument as described in claim 6, characterized in that, The locking structure includes a locking groove and a locking block. The locking block is used to engage with the locking groove when the unlocking member is switched to the unlocked state, so as to generate a resisting force that prevents the unlocking member from rotating relative to the rotating shaft from a second angle to a first angle.

8. The surgical instrument as described in claim 7, characterized in that, The locking block has a guide side and an abutment side disposed opposite to each other. The guide side has a guide slope, which is used to guide the locking block into the locking groove when the unlocking member rotates relative to the rotating shaft from a first angle to a second angle. The abutment side is used to abut against the inner wall of the locking groove when the locking block engages with the locking groove, so as to generate a resisting force that prevents the unlocking member from rotating relative to the rotating shaft from a second angle to a first angle.

9. The surgical instrument as described in claim 6, characterized in that, The locking structure includes a self-locking groove and a self-locking protrusion. The self-locking protrusion abuts against the self-locking groove when the unlocking member switches to the unlocked state, thereby generating a resisting force that prevents the unlocking member from rotating relative to the pivot member from a second angle to a first angle. The self-locking protrusion has a guide arc surface, which guides the self-locking protrusion into the self-locking groove and abuts against it when the unlocking member rotates relative to the pivot member from a first angle to a second angle.

10. The surgical instrument according to any one of claims 1-9, characterized in that, The driven component is configured as a driven gear component, and the drive transmission component is configured as a rack component. The driven gear component includes a single driven gear. When the driven component is in the first driving state, the driven gear meshes with the driving gear. When the driven component is in the second driving state, the driven gear disengages from the driving gear. Furthermore, when the driven drive assembly is in the first drive state and the second drive state, the driven gear meshes with the rack assembly.

11. The surgical instrument according to any one of claims 1-9, characterized in that, It also includes a closing locking mechanism that can switch between a locked state and a released state; when the jaw assembly is in the closed state, the closing locking mechanism can switch to the locked state so that the jaw assembly remains in the closed state; when the firing member is in the first position, the closing locking mechanism can switch to the released state so that the jaw assembly switches to the open state.

12. A surgical instrument, characterized in that, include: The handle assembly includes a drive gear, a single driven gear, and a rack and pinion assembly; The The driven gear can switch between a first driving state and a second driving state. In the first driving state, the driven gear meshes with the driving gear, and in the second driving state, the driven gear disengages from the driving gear. The driven gear meshes with the rack assembly in both the first driving state and the second driving state. When the driven gear switches to the first driving state, it can rotate with the driving gear to drive the rack assembly to move; A barrel assembly, the proximal end of which is connected to a handle assembly for transmitting the movement of the rack assembly; An actuator assembly, wherein the distal end of the barrel assembly is connected to the actuator assembly, the actuator assembly including a jaw assembly and a firing member, the jaw assembly being switchable between an open state and a closed state; When the jaw assembly is in the closed state, the firing member can move between the proximal and distal ends of the actuator assembly based on the movement of the rack assembly and under the drive of the barrel assembly; the firing member has a first position on its movement path, and when the firing member is in the first position, the actuator assembly is switched to a first actuator state that allows the jaw assembly to switch to the open state; And a reset mechanism, the reset mechanism including an unlocking component and a reset component, the unlocking component being able to switch from a locked state to an unlocked state to drive the driven gear to switch from the first driving state to the second driving state; The unlocking component has a mounting portion, and the reset component is movably mounted on the mounting portion; the reset component can cooperate with the driven gear assembly when the unlocking component is in the unlocked state, and drive the driven gear assembly to rotate, so as to drive the rack assembly to move through the driven gear assembly, so as to switch the actuator assembly to the first actuator state.

13. A surgical instrument, characterized in that, include: The handle assembly includes a drive gear, a single driven gear, and a rack and pinion assembly; The The driven gear can switch between a first driving state and a second driving state. In the first driving state, the driven gear meshes with the driving gear, and in the second driving state, the driven gear disengages from the driving gear. The driven gear meshes with the rack assembly in both the first driving state and the second driving state. When the driven gear assembly switches to the first driving state, it can rotate with the driving gear to drive the rack assembly to move; A barrel assembly, the proximal end of which is connected to a handle assembly for transmitting the movement of the rack assembly; An actuator assembly, wherein the distal end of the barrel assembly is connected to the actuator assembly, the actuator assembly including a jaw assembly and a firing member, the jaw assembly being switchable between an open state and a closed state; When the jaw assembly is in the closed state, the firing member can move between the proximal and distal ends of the actuator assembly based on the movement of the rack assembly and driven by the barrel assembly; when the rack assembly moves closer to the barrel assembly, the barrel assembly drives the firing member to move toward the distal end of the actuator assembly; when the rack assembly moves away from the barrel assembly, the barrel assembly drives the firing member to a first position, so that the actuator assembly switches to a first actuator state that allows the jaw assembly to switch to the open state; And a reset mechanism, which can drive the driven gear to switch to the second driving state; When the driven gear switches to the second driving state, the reset mechanism can selectively drive the driven gear to rotate in opposite first and second directions. When the driven gear rotates in the first direction, it drives the rack assembly to move closer to the barrel assembly, thereby driving the firing member to move toward the distal end of the actuator assembly. When the driven gear rotates in the second direction, it drives the rack assembly to move away from the barrel assembly, thereby switching the jaw assembly to the first actuator state.

14. A surgical instrument, characterized in that, include: The handle assembly includes an active drive component, a driven drive component, and a drive transmission component; The driven component can switch between a first driving state and a second driving state. In the first driving state, the driven component connects the active driving member to the drive transmission component, so that the drive transmission component can move based on the rotation of the active driving member and under the transmission of the driven component. In the second driving state, the driven component disconnects the drive connection between the active driving member and the drive transmission component. A barrel assembly, the proximal end of which is connected to a handle assembly for transmitting the motion of the drive transmission assembly; An actuator assembly, wherein the distal end of the barrel assembly is rotatably connected to the actuator assembly, the actuator assembly including a jaw assembly and a firing member, the jaw assembly being switchable between an open state and a closed state; When the jaw assembly is in the open state and the driven assembly is in the first driven state, the actuator assembly can perform a bending motion based on the rotation of the active drive member and under the transmission of the drive transmission assembly and the barrel assembly. The actuator assembly includes an operating mechanism that can switch the driven component to the second driving state. When the driven component is in the second driving state and the jaw assembly is in the open state, the operating mechanism can drive the driven component to rotate and drive the drive transmission assembly to move through the driven component, so that the actuator assembly can perform bending motion.

15. A surgical instrument, characterized in that, include: The handle assembly includes an active drive component, a driven drive component, and a drive transmission component; The driven component can switch between a first driving state and a second driving state. In the first driving state, the driven component connects the active driving member to the drive transmission component, so that the drive transmission component can move based on the rotation of the active driving member and under the transmission of the driven component. In the second driving state, the driven component disconnects the drive connection between the active driving member and the drive transmission component. A barrel assembly, the proximal end of which is connected to a handle assembly for transmitting the motion of the drive transmission assembly; An actuator assembly, wherein the distal end of the barrel assembly is connected to the actuator assembly, the actuator assembly including a jaw assembly and a firing member, the jaw assembly being switchable between an open state and a closed state; When the jaw assembly is in the closed state, the firing member can move between the proximal and distal ends of the actuator assembly based on the movement of the drive transmission assembly and under the transmission of the barrel assembly; the firing member has a first position on its movement path, and when the firing member is in the first position, the actuator assembly is switched to a first actuator state that allows the jaw assembly to switch to the open state; A reset mechanism, comprising an unlocking component and a reset component, wherein the unlocking component is capable of switching from a locked state to an unlocked state, thereby driving the driven component to switch from a first driving state to a second driving state; The reset component can cooperate with the driven component when the unlocking component is in the unlocked state, and drive the driven component to rotate, so as to drive the drive transmission component to move through the driven component, so as to switch the actuator component to the first actuator state; And a housing having a first opening; The driven component includes a rotating shaft, and when the unlocking component is in the locked state, the rotating shaft is located inside the housing; When the unlocking component switches from the locked state to the unlocked state, it drives the rotating shaft to move toward the first opening, and causes at least a portion of the rotating shaft to extend out of the first opening.

16. The surgical instrument as claimed in claim 15, characterized in that, The housing also has a mounting groove, at least a portion of the reset mechanism is disposed in the mounting groove, and the first opening communicates with the mounting groove; when the unlocking member is in the unlocked state, at least a portion of the rotating shaft extends into the mounting groove from the first opening.

17. A surgical instrument, characterized in that, include: The handle assembly includes an active drive component, a driven drive component, and a drive transmission component; The driven component can switch between a first driving state and a second driving state. In the first driving state, the driven component connects the active driving member to the drive transmission component, so that the drive transmission component can move based on the rotation of the active driving member and under the transmission of the driven component. In the second driving state, the driven component disconnects the drive connection between the active driving member and the drive transmission component. A barrel assembly, the proximal end of which is connected to a handle assembly for transmitting the motion of the drive transmission assembly; An actuator assembly, wherein the distal end of the barrel assembly is connected to the actuator assembly, the actuator assembly including a jaw assembly and a firing member, the jaw assembly being switchable between an open state and a closed state; When the jaw assembly is in the closed state, the firing member can move between the proximal and distal ends of the actuator assembly based on the movement of the drive transmission assembly and under the transmission of the barrel assembly; the firing member has a first position on its movement path, and when the firing member is in the first position, the actuator assembly is switched to a first actuator state that allows the jaw assembly to switch to the open state; A reset mechanism, comprising an unlocking component and a reset component, wherein the unlocking component is capable of switching from a locked state to an unlocked state, thereby driving the driven component to switch from a first driving state to a second driving state; The reset component can cooperate with the driven component when the unlocking component is in the unlocked state, and drive the driven component to rotate, so as to drive the drive transmission component to move through the driven component, so as to switch the actuator component to the first actuator state; The housing has a mounting slot and a cover for opening and closing the mounting slot; when the unlocking member is in the locked state, the reset mechanism is located within the mounting slot and allows the cover to close the mounting slot; when the unlocking member is in the unlocked state, at least a portion of the reset mechanism extends out of the mounting slot, and the unlocking member is subjected to a force that prevents it from switching to the unlocked state, thereby preventing the cover from closing the mounting slot.

18. The surgical instrument as claimed in claim 17, characterized in that, It also includes a locking structure for preventing the unlocking element from switching from the unlocked state to the locked state.

Images