WO2020228600A1 - 一种医疗器械 - Google Patents

一种医疗器械 Download PDF

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Publication number
WO2020228600A1
WO2020228600A1 PCT/CN2020/089155 CN2020089155W WO2020228600A1 WO 2020228600 A1 WO2020228600 A1 WO 2020228600A1 CN 2020089155 W CN2020089155 W CN 2020089155W WO 2020228600 A1 WO2020228600 A1 WO 2020228600A1
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WO
WIPO (PCT)
Prior art keywords
limit
reset
assembly
reset switch
elastic member
Prior art date
Application number
PCT/CN2020/089155
Other languages
English (en)
French (fr)
Inventor
唐传刚
廖梦辉
鲍明惠
Original Assignee
上海逸思医疗科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海逸思医疗科技有限公司 filed Critical 上海逸思医疗科技有限公司
Priority to US17/609,973 priority Critical patent/US20220218343A1/en
Publication of WO2020228600A1 publication Critical patent/WO2020228600A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • A61B17/07207—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously the staples being applied sequentially
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B17/115—Staplers for performing anastomosis in a single operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
    • A61B2017/00407—Ratchet means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • A61B2017/07214—Stapler heads
    • A61B2017/07285—Stapler heads characterised by its cutter

Definitions

  • the invention belongs to the technical field of medical devices, and relates to a medical device, in particular to a medical device that can be reset by an operating hand.
  • the stapler is a surgical instrument. Its working principle is to partially close the front end of the clamp to clamp the tissue, and then push the metal suture nails in the staple cartridge of the stapler into a compact shape, thereby stitching the tissues together.
  • the jaw part is also equipped with a cutting knife, which can cut the sutured tissue during the tissue suture process.
  • Figure 1 is a schematic structural diagram of an existing stapler; please refer to Figure 1, the stapler with the above-mentioned functions includes an actuator 4, an intermediate connecting body and a controller 2 (handle part); the handle part includes a reset cap 31, The reset cap 31 performs a reset operation.
  • the advancement of the firing rack is completed by pulling the firing trigger, and the gear on the trigger drives the firing rack to move forward.
  • the retreat of the firing rack is accomplished by pulling back the reset cap on the firing rack to drive the firing rack to move backwards; it is also called the resetting of the firing rack.
  • the actuator consists of a nail anvil assembly, a nail magazine assembly and a drive assembly.
  • the nail anvil assembly includes a nail forming surface, the nail forming surface includes a plurality of rows of nail grooves, and the nail grooves are used for forming metal suture nails.
  • the staple cartridge assembly generally includes a staple cartridge, suture staples, a staple push block, a staple push slider, and a staple cartridge seat.
  • the upper surface of the staple cartridge is the tissue contact surface, and the staple cartridge is installed in the staple cartridge seat.
  • the staple anvil assembly is movably connected to the proximal end of the staple cartridge assembly at the proximal end, and can be switched between an open state and a closed state.
  • the driving component is connected with the transmission mechanism, and is used for converting the action of firing the trigger into the closing, firing and opening actions of the actuator.
  • the nail anvil assembly and the nail cartridge seat each also include a longitudinal groove, and the longitudinal groove is used to accommodate the passage of the driving assembly.
  • the driving component moves to the distal end of the actuator through the above-mentioned longitudinal groove, it will drive the staple anvil component and the staple cartridge component from the open state to the closed state, and drive the push nail slider and the push block to eject the suture nails and place them
  • the nail anvil assembly is formed in the nail groove of the nail forming surface.
  • the drive assembly also includes a cutting knife for cutting the tissue between the rows of staple lines after the tissue is sutured by the staples.
  • the controller is used to manually control the operating equipment, and generally includes a fixed handle, a firing trigger relatively movably connected to the fixed handle, a set of transmission mechanisms that transmit the firing trigger action to the actuator, and a manual reset component.
  • a manual reset component When the staple cartridge component and the staple anvil component of the actuator are in the closed state, operating the manual reset component can drive the staple cartridge component and the staple anvil component to return to the open state.
  • the middle connecting body is movably connected with the distal end of the controller and connected with the proximal end of the actuator. The middle connecting body forms a connecting channel for transmitting the trigger action to the actuator.
  • the stomach and large intestine are generally thicker, and the tissue lumen is rich in wrinkles, and there may be incompletely separated fatty tissue on the surface; There are a large number of alveoli in the lung tissue. Therefore, when the actuator of the stapler closes and clamps the above-mentioned tissue for the first time, the tissue is generally difficult to be compressed due to the thickness of the tissue, wrinkles, adipose tissue or air bubbles in the tissue, etc. To the desired uniform thickness.
  • the doctor needs to release the instrument held by the other hand, and repeatedly operate the firing trigger and manual reset trigger of the stapler with both hands.
  • the doctor first needs to use the other hand to assist in pressing the firing safety button of the stapler to open the firing safety device before deciding to staple and cut the tissue, and then can operate the firing again.
  • the trigger performs subsequent actions, which brings inconvenience to the operation of the instrument and brings additional risks to the operation.
  • doctors sometimes operate different instruments with two hands. If a certain instrument requires two hands to operate at the same time, the doctor needs to release the other instrument first.
  • the controller of the instrument outside the body that is not under the control of the doctor may be displaced due to accidental touch during the operation. A small amount of displacement of the instrument controller may cause a large number of non-operational actuators at the distal end of the instrument. Controlled displacement: Because the actuator at the far end of the instrument is very close to the tissues and organs in the surgical target area, the uncontrolled displacement of the actuator may damage nearby tissues and organs.
  • the invention provides a medical device, which can facilitate the operator to complete the reset action of firing the medical device while holding the medical device with one hand.
  • a medical device includes an executing mechanism, a connecting mechanism, and a control mechanism.
  • the control mechanism is connected to the executing mechanism through the connecting mechanism;
  • the control mechanism includes a firing assembly, a reset mechanism and a limit assembly
  • the firing assembly After the firing assembly is fired, it can move in a first direction to realize the first action of the actuator;
  • the limit component is connected to the firing component, and the firing component can be restricted from moving in the second direction after the firing component moves a certain distance in the first direction;
  • the reset mechanism is connected to the limit assembly, and after the firing assembly is restricted by the limit assembly to move in the second direction, the reset mechanism can adjust the position of the limit assembly so that the limit assembly releases the limit on the firing assembly Position so that the firing assembly can move in the second direction.
  • the reset mechanism includes a reset switch and a transmission member, and the limit assembly includes a limit slider; the reset switch is linked with the transmission member, and the reset switch is moved to When the open position is reset, the transmission member will drive the limit slider to move in a preset direction, and the limit slider will release the limit on the firing assembly.
  • the reset switch and the transmission member can be integrated or connected separately.
  • the transmission member is a rotating structure or a sliding structure.
  • the transmission member is a rotating structure
  • the reset switch is linked with the first end of the rotating structure, and the reset switch is moved to the reset open position, and the second end of the rotating structure will drive the limit position
  • the slider moves in a preset direction, and the limit slider releases the limit on the firing assembly.
  • the reset mechanism further includes an elastic member of a rotating structure
  • the limit assembly further includes an elastic member of a limit slider
  • the elastic member of the rotating structure is connected to the rotating structure
  • the elastic member of the limit slider is connected to the The limit slider.
  • the elastic member of the rotating structure is a tension spring
  • the elastic member of the limiting slider is a torsion spring
  • the limit component includes a limit slider, a first elastic member, and a first reset switch elastic member;
  • the reset mechanism includes a reset switch; the first end of the first elastic member The reset switch is connected, and the second end is connected with the limit slider, so that the first elastic member can act in both directions with the reset switch and the limit slider; one end of the first reset switch elastic member is pressed on the reset switch, and the other end is fixed to the corresponding structure of the housing Up; when the reset switch is toggled to the reset on position, the reset switch is linked with the first end of the first elastic member, the first elastic member rotates to a set angle, and the second end of the first elastic member moves the limit slider toward the preset Set the direction to move, the limit slider releases the limit on the firing assembly.
  • the first elastic member is a torsion spring
  • the first reset switch elastic member is a torsion spring
  • the limit assembly includes at least one limit block, the limit block is arranged on the reset mechanism, and the reset mechanism includes a reset switch and a second reset switch elastic member;
  • the firing assembly includes a rack, and the rack is provided with a limit step; one end of the second reset switch elastic member acts on the reset switch, and the other end is fixed on the corresponding structure of the housing; the limit block is stuck on the limit step of the rack When the reset switch is toggled to the reset on position, the limit block on the reset switch moves to the non-limit position in the preset direction together, and the limit slider releases the limit on the firing assembly.
  • the elastic member of the second reset switch is a compression spring.
  • the limit assembly includes at least one limit block, the limit block is arranged on the reset mechanism, and the reset mechanism includes a reset switch and a third reset switch elastic member;
  • the firing assembly includes a rack, the rack is provided with a limit step, and the limit step occupies at least a certain width of the first lateral side; the limit block is stuck at the limit step of the rack; when the reset switch is toggled to reset on Position, the limit block on the reset switch is moved to the second side together, until the limit step on the rack is completely released.
  • the elastic member of the third reset switch is a compression spring.
  • control mechanism includes a pull-back component, the pull-back component is connected to the firing component, and can apply the pull-back force in the second direction to the firing component.
  • the firing assembly includes a rack, and one side of the rack with teeth is matched with the trigger assembly; the rack is provided with a pull-back connection mechanism, and the pull-back assembly cooperates with the pull-back connection mechanism.
  • the firing assembly is a firing rack assembly
  • the firing rack assembly further includes a reset cap and a reset piece.
  • the reset cap When the reset cap is applied with a set back tension, the reset cap drives The reset piece pushes open the limit slider, and the limit slider releases the limit on the firing assembly.
  • the actuator includes a clamp, a cutting blade part, and a clamp shrapnel;
  • the connecting mechanism includes a center push rod, and the firing assembly includes a rack;
  • the center push rod is connected to the cutting knife part.
  • the clamp When the cutting knife part is in the first position, the clamp can be pressed so that the clamp clamps the clamp shrapnel; when the cutting knife part is in the second position, the cutting knife part No longer pressing the clamp, the clamp opens under the action of the clamp shrapnel;
  • the center push rod moves in the second direction along with the rack, the center push rod is linked with the cutting knife part, the cutting knife part retracts to the back of the clamp, and the stop on the cutting knife part The structure no longer presses the clamp, and the clamp opens under the action of the clamp shrapnel.
  • the actuator is a detachable reloader, or the actuator is connected to a connecting mechanism.
  • the medical device includes a staple cartridge assembly, and the staple cartridge assembly is detachably mounted on the clamp of the actuator.
  • the medical device is a stapler.
  • the beneficial effect of the present invention is that the medical device proposed by the present invention can facilitate the operator to complete the reset action of the firing rack while holding the medical device (such as a stapler) with one hand.
  • Figure 1 is a schematic diagram of the structure of a conventional stapler.
  • Figure 2 is a schematic diagram of the structure of the stapler in an embodiment of the invention.
  • Fig. 3 is a schematic structural diagram of the stapler in an embodiment of the present invention (the state before reset and the reset operation is performed through the reset switch).
  • Figure 4 is a schematic diagram of the structure of the stapler in an embodiment of the present invention (state after reset).
  • Fig. 5 is a structural diagram of the stapler in an embodiment of the present invention (the state before reset and the reset operation is performed through the reset cap).
  • Fig. 6 is a structural schematic diagram of a stapler limit component in an embodiment of the present invention (state before reset).
  • Fig. 7 is a schematic structural diagram of a stapler limit component in an embodiment of the present invention (state after reset).
  • Fig. 8 is a schematic diagram of the structure of the stapler limit component in an embodiment of the present invention (state before reset).
  • Fig. 9 is a structural schematic diagram of a stapler limit component in an embodiment of the present invention (state after reset).
  • Fig. 10 is a schematic structural diagram of a stapler limit assembly in an embodiment of the present invention (front view of the state before reset).
  • Fig. 11 is a schematic structural diagram of a stapler limit assembly in an embodiment of the present invention (a side view of a state before reset).
  • Fig. 12 is a schematic structural diagram of a stapler limit component in an embodiment of the present invention (state after reset).
  • Figure 13 is a schematic view of the structure of the retractable assembly of the stapler in an embodiment of the present invention.
  • Figure 14 is a schematic diagram of the actuator structure of the stapler in an embodiment of the present invention.
  • Fig. 15 is a structural schematic diagram of a sliding structure of the transmission member of the stapler in an embodiment of the present invention.
  • near end will refer to the end of the device closest to the operator in use, while the term “distal” will refer to the end of the device furthest away from the operator.
  • the present invention discloses a medical device.
  • the medical device includes an actuator, a connecting mechanism, and a control mechanism.
  • the control mechanism is connected to the actuator through the connecting mechanism; the control mechanism includes a firing assembly, a reset mechanism and a limit assembly. After the firing assembly is fired, it can move in a first direction to realize the first action of the actuator.
  • the limit component is connected to the firing component, and the firing component can be restricted from moving in the second direction after the firing component moves a certain distance in the first direction.
  • the reset mechanism is connected to the limit assembly, and after the firing assembly is restricted by the limit assembly to move in the second direction, the reset mechanism can adjust the position of the limit assembly so that the limit assembly releases the limit on the firing assembly Position so that the firing assembly can move in the second direction.
  • the first direction is the distal movement direction along the center of the firing assembly
  • the second direction is the proximal movement direction along the center of the firing assembly
  • the first action of the actuator is the clamping action of the actuator (Of course it can also be an opening action, and the first action and reset action can be set as needed).
  • FIG 2 is a schematic structural diagram of the stapler in an embodiment of the present invention; please refer to Figure 2, in an embodiment of the present invention, the medical device is the stapler 1, and the stapler 1 includes a front end effector 4 (as the aforementioned The actuator), the intermediate connecting body 5 (as the above-mentioned connecting mechanism) and the handle part 2 at the rear end (as the above-mentioned control mechanism).
  • the handle part includes a firing rack assembly 3, a reset mechanism and a limit assembly.
  • the reset mechanism includes a reset switch 7.
  • the form of the reset switch 7 is not limited to buttons or keys, and its position is not limited to the side or rear end.
  • the reset switch 7 is switched from off to on, and the limit component linked with the reset switch 7 releases the limit on the firing rack assembly 3, so that the firing rack assembly 3 is reset.
  • the reset mechanism includes a reset switch and a transmission member, and the limit component includes a limit slider; the reset switch is linked with the transmission member, and the reset switch is toggled to reset on. Position, the transmission member moves the limit slider to a preset direction, and the limit slider releases the limit on the firing assembly.
  • the reset mechanism further includes an elastic member of a rotating structure, and the limiting component further includes an elastic member of a limiting slider, the elastic member of the rotating structure is connected to the rotating structure, and the limiting slider is elastic The piece is connected to the limit slider.
  • the reset switch and the transmission member can be integrated or connected separately.
  • the actuator includes a clamp, a cutting knife component, and a clamp shrapnel;
  • the connecting mechanism includes a center push rod, the firing assembly includes a rack;
  • the center push rod is connected to the cutting knife
  • the cutting knife member When the cutting knife member is in the first position, it can press the clamp so that the clamp clamps the clamp elastic piece; when the cutting knife member is in the second position, the cutting knife member no longer presses the clamp and clamps
  • the pliers are opened under the action of the clamp shrapnel; when the reset mechanism makes a firing action, the center push rod also moves in the second direction along with the rack, the center push rod is linked with the cutting blade part, and the cutting blade part retracts. To the rear of the clamp, the stop structure on the cutting blade part no longer presses the clamp, and the clamp opens under the action of the clamp shrapnel.
  • the transmission member is a rotating structure.
  • FIG. 3 is a schematic structural diagram of the stapler in an embodiment of the present invention (the state before reset and the reset operation is performed through the reset switch); please refer to FIG. 3, in an embodiment of the present invention, the firing rack assembly 3 includes a rack 33 .
  • the reset mechanism includes a reset switch 7, a rotating piece 71, and a rotating piece tension spring 72.
  • the front end effector 4 includes a clamp 41, a cutting blade part 42, and a clamp elastic piece 43; the staple cartridge 411 on the clamp 41 can be a fixed staple cartridge or a detachable and replaceable staple cartridge.
  • the limit component 8 includes a limit slider 83 and a limit slider torsion spring 84; the rotating leaf tension spring 72 is connected to the rotating plate 71, and the limit slider torsion spring 84 is connected to the limit slider 83.
  • the reset operation is performed through the reset switch 7, and the interaction relationship between the components of the stapler is as follows:
  • the reset switch 7 in Fig. 3 is in the closed state.
  • the clamp 41 is in the clamped state.
  • the reset switch 7 is linked with the left end of the rotating piece 71, the rotating piece 71 rotates clockwise for a certain angle, and the right end of the rotating piece 71 presses down the limit slider 83,
  • the rack 33 is pulled to reset by applying a return force
  • the center push rod 51 also retreats with the rack 33
  • the center push rod 51 and the cutting knife part 42 are linked to cut
  • the knife member 42 retreats to the back of the clamp 41, the stop structure 421 on the cutting knife member 42 no longer presses the clamp 41, and the clamp 41 is opened under the action of the clamp elastic piece 43.
  • the clamp 41 is in an open state.
  • the handle part further includes a pull-back assembly 6.
  • One end of the pull-back assembly 6 is connected to the firing rack assembly 3, and the other end is fixed on the corresponding structure of the housing, and can apply a pull-back force in the second direction to the firing assembly.
  • the reset switch 7 when the reset switch 7 is turned counterclockwise to a certain angle to the reset opening position, the right end of the rotating piece 71 presses down the limit slider 83, and the limit step 331 on the rack 33 is opened. 33 is pulled to reset under the action of the rack stop 61.
  • Figure 5 is a schematic structural diagram of the stapler in an embodiment of the present invention (the state before reset and the reset operation is performed through the reset cap); please refer to Figure 5, in another embodiment of the present invention, the firing rack assembly 3 includes a reset cap 31.
  • the reset piece 32 and the rack 33 can be reset through the reset cap 31.
  • the interaction relationship between the components is as follows: pull the reset cap 31 back, drive the reset piece 32 to push the limit slider in the lower limit assembly 8 83.
  • the firing rack assembly 3 is manually pulled back into position.
  • the transmission member is a sliding structure.
  • the transmission member is, for example, a sliding structure 73.
  • One end of the sliding structure 73 is connected with a reset switch, and the other end is connected with a limit slider 83.
  • the sliding structure 73 can slide along a preset track.
  • the sliding structure can slide along a preset track, such as linear sliding or curved sliding.
  • the limit component includes a limit slider, a first elastic member, and a first reset switch elastic member;
  • the reset mechanism includes a reset switch; the first end of the first elastic member The reset switch is connected, and the second end is connected with the limit slider, so that the first elastic member can act in both directions with the reset switch and the limit slider; one end of the first reset switch elastic member is pressed on the reset switch, and the other end is fixed to the corresponding structure of the housing Up; when the reset switch is toggled to the reset on position, the reset switch is linked with the first end of the first elastic member, the first elastic member rotates to a set angle, and the second end of the first elastic member moves the limit slider toward the preset Set the direction to move, the limit slider releases the limit on the firing assembly.
  • the first elastic member of the reset switch provides a holding force for the reset switch to stay at the limit position, and the first elastic member also provides a holding force for the reset switch to stay at the limit position.
  • Figure 6 is a schematic structural diagram of the stapler limit assembly in an embodiment of the present invention (pre-reset state), and Figure 7 is a structural schematic diagram of the stapler limit assembly in an embodiment of the present invention (post-reset state); please refer to Figure 6 7.
  • One end of the first reset switch elastic member 86 is pressed on the reset switch 7 and the other end is fixed on the corresponding structure of the housing.
  • the interaction relationship between the components of the limit assembly 8 is as follows: flip the reset switch 7 counterclockwise to a certain angle to the reset opening position, the reset switch 7 is linked with the left end of the first elastic member 85, and the first elastic member 85 rotates clockwise to a certain degree Angle, the right end of the first elastic member 85 moves the limiting slider 83 downward.
  • the first reset switch elastic member 86 provides a holding force for the reset switch 7 to stay at the limit position
  • the first elastic member 85 also provides a holding force for the reset switch 7 to stay at the limit position.
  • the first elastic member 85 is a torsion spring
  • the first reset switch elastic member 86 is a torsion spring.
  • the limit component includes at least one limit block, the limit block is arranged on the reset mechanism, and the reset mechanism includes a reset switch and a second reset switch elastic member;
  • the firing assembly includes a rack, and the rack is provided with a limit step; one end of the second reset switch elastic member acts on the reset switch, and the other end is fixed on the corresponding structure of the housing; the limit block is stuck on the limit step of the rack
  • the limit switch is toggled to the reset on position
  • the limit block on the reset switch moves to the non-limit position in the preset direction together, and the limit slider releases the limit on the firing assembly.
  • the second reset switch elastic member provides a holding force for the reset switch to stay at the limit position.
  • Figure 8 is a schematic structural diagram of the stapler limit assembly in an embodiment of the present invention (pre-reset state), and Figure 9 is a structural schematic diagram of the stapler limit assembly in an embodiment of the present invention (post-reset state);
  • the limit component is a limit block 71, which is arranged on the reset mechanism.
  • the limit block 71 is arranged corresponding to the upper limit step 331 of the rack 33.
  • the reset mechanism includes a reset switch 7 and a second reset switch elastic member 87.
  • One end of the second reset switch elastic member 87 acts on the reset switch 7 and the other end is fixed to the corresponding structure of the housing.
  • the limiting block 71 is stuck at the limiting step 331 of the rack 33.
  • the second reset switch elastic member 87 provides a holding force for the reset switch 7 to stay at the limit position.
  • the second reset switch elastic member 87 is a compression spring.
  • the limit component includes at least one limit block, the limit block is disposed on the reset mechanism, and the reset mechanism includes a reset switch and a third reset switch elastic member;
  • the firing assembly includes a rack, the rack is provided with a limit step, and the limit step occupies at least a certain width of the first lateral side; the limit block is stuck at the limit step of the rack; when the reset switch is toggled to reset on Position, the limit block on the reset switch is moved to the second side together, until the limit step on the rack is completely released.
  • the third reset switch elastic member provides a holding force for the reset switch to stay at the limit position.
  • Figures 10 to 12 are structural schematic diagrams of the stapler limiting component in an embodiment of the present invention; please refer to Figures 10 to 12, in an embodiment of the present invention, the limiting component is a limiting block 71, The block 71 is provided on the reset mechanism.
  • the reset mechanism includes a reset switch 7 and a third reset switch elastic member 88 (the reset switch 7 may also exist independently of the limit component 8); the limit block 71 is arranged corresponding to the upper limit step 331 of the rack 33. As shown in FIG. 11, the limiting block 71 is stuck at the limiting step 331 of the rack 33.
  • the third reset switch elastic member 88 provides a holding force for the reset switch 7 to stay at the limit position.
  • the third reset switch elastic member 88 is a compression spring.
  • Fig. 14 is a schematic structural diagram of the actuator of the stapler in an embodiment of the present invention.
  • the actuator 4 is a reloader (such as a nail magazine), and is detachably connected to the intermediate connecting body 5.
  • the actuator is an end effector, which is connected to the intermediate connecting body 5 (not shown).
  • the staple cartridge assembly is detachably mounted on the clamp of the actuator.
  • the medical device proposed by the present invention can facilitate the operator to complete the reset action of the firing rack while holding the medical device (such as a stapler) with one hand.

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Abstract

一种医疗器械(1)，包括：执行机构(4)、连接机构(5)以及控制机构(2)，控制机构(2)通过连接机构(5)连接执行机构(4)；控制机构(2)包括击发组件(3)、复位机构以及限位组件(8)；击发组件(3)被击发后能够向第一方向移动，实现执行机构(4)的第一动作；限位组件(8)连接击发组件(3)，在击发组件(3)向第一方向移动一定距离后能限制击发组件(3)向第二方向移动；复位机构连接限位组件(8)，在击发组件(3)被限位组件(8)限制向第二方向移动后，复位机构能调节限位组件(8)的位置，使限位组件(8)解除对击发组件(3)的限位，使得击发组件(3)可向第二方向移动。医疗器械可方便操作者在一只手在握住医疗器械(如吻合器)(1)的同时还能完成击发齿条(33)的复位动作。

Description

一种医疗器械 技术领域
本发明属于医疗器械技术领域，涉及一种医疗器械，尤其涉及一种可用操作手复位的医疗器械。
背景技术
近年来，市场上出现了设有复位机构的医疗器械，如吻合器。吻合器是一种外科手术器械，它的作用原理是通过前端夹钳部分闭合以夹持组织，再将吻合器钉仓中的金属缝合钉推出压紧成形，从而把组织缝合在一起。在有些吻合器中，钳口部分还装有切割刀，能在组织缝合的过程中把缝合好的组织切断开。
图1为现有的吻合器的结构示意图；请参阅图1，具有上述功能的吻合器包括有一个执行器4、中间连接体和控制器2(手柄部分)；手柄部分包括复位帽31，通过复位帽31进行复位操作。
通常，从夹持组织、推钉缝合、切割组织，到切割刀退出、松开组织的一系列动作，主要依靠一根中间连接体的中心推杆的前后运动实现，而中心推杆又与后端手柄部分的击发齿条相连。
击发齿条的前进是通过扣动击发扳机，扳机上的拨齿带动击发齿条向前运动完成。击发齿条的后退是通过回拉击发齿条上的复位帽，带动击发齿条向后运动完成；也称为击发齿条的复位。
执行器由钉砧组件、钉仓组件和驱动组件组成。钉砧组件包含一个钉成型面，钉成型面包含多排钉槽，钉槽用于金属缝合钉的成型。钉仓组件一般包括钉仓、缝合钉、推钉块和推钉滑块和钉仓座，钉仓的上表面为组织接触面，钉仓安装在钉仓座中。钉砧组件在近端与钉仓组件的近端可动地连接在一起，并可以在张开状态和关闭状态之间转换。驱动组件与传动机构连接，用于把击发扳机的动作转换为执行器的关闭、击发和张开动作。一般情况下，钉砧组件和钉仓座还各包含一个纵向槽，上述纵向槽用于容纳驱动组件通过。当驱动组件通过上述纵向槽向执行器的远端运动时，会驱使钉砧组件和钉仓组件从张开状态转换为关闭状态，并且驱使推钉滑块和推钉块顶出缝合钉并在钉砧组件的钉成型面的钉槽中成型。一般情况下，驱动组件还包括一个切割刀，用于在组织被缝合钉缝合后，在多排钉线之间切割组织。控制器用于手动控制操作器械，一般包括有一个固定手柄，一个与固定手柄相对可动连接的击发 扳机，一组传递击发扳机动作至执行器的传动机构，一个手动复位组件。当执行器的钉仓组件与钉砧组件处于闭合状态时，操作手动复位组件能驱使钉仓组件与钉砧组件恢复张开状态。中间连接体与控制器的远端可动地连接，并与执行器的近端连接在一起，中间连接体构成一个连接通道，用于实现将击发扳机的动作传递给执行器。
现有吻合器在进行击发齿条复位时，操作者需要用另一只手回拉复位帽完成复位。例如，在美国专利US5,865,361中，当击发吻合器的击发扳机时，吻合器的钉砧组件和钉仓组件将从张开状态转变为关闭状态，夹持住目标组织。在手术中，如果医生认为需要调整夹持组织的位置，那么医生需要用另一只手向回拉手动复位组件，驱使钉仓组件与钉砧组件恢复张开状态。在实际手术中，吻合器的目标组织包括胃、肺、大肠等组织，其中，胃和大肠这些组织一般比较厚，且组织内腔有丰富的折皱，表面可能还有未完全分离的脂肪组织；而肺组织里有大量的肺泡，因此，吻合器的执行器在第一次关闭并夹持上述组织时，由于组织的厚度、折皱、脂肪组织或者组织内的气泡等原因，组织一般难以被压缩至理想的均匀厚度。通过反复在同一部位夹持组织，可以有效消除上述因素引起的组织压缩不均匀现象，使吻合器在随后驱使钛钉吻合组织及切割组织时，钛钉成形高度均匀，吻合效果好，组织切缘光滑。要实现在同一组织部位反复夹持组织，医生需要松开另一只手握持的器械，反复用双手操作吻合器的击发扳机和手动复位扳机。另外，吻合器的执行器在正确夹持组织以后，医生在决定吻合和切割组织前，首先需要用另一只手辅助按下吻合器的击发保险按钮以打开击发保险装置，然后才能再次操作击发扳机执行后续动作，这给器械操作带来不便，给手术带来额外风险。在微创外科手术中，医生有时两只手分别操作不同的器械，如果某一器械需要两只手同时操作，医生需要先松开握持的另一个器械。在微创外科手术中，未受医生控制的器械位于体外的控制器有可能因为术中意外的触碰而移位，器械控制器的少量移位就可能造成器械远端的执行器的大量非受控移位；因器械远端的执行器与手术目标区内的组织和器官很靠近，执行器的非受控移位有可能损伤附近的组织和器官。在临时不操作器械室，有些医生会将该器械抽出体外，以避免风险；有些情况下，器械会由另外的医生临时接手扶握住；有时，医生只是松开器械，而将器械的远端压靠在某些组织上或组织的间隙中，这些举动要么会延长手术时间，要么存在损伤组织和器官的风险。
有鉴于此，如今迫切需要设计一种新的吻合器，以便克服现有吻合器存在的上述诸多缺陷。
发明内容
本发明提供一种医疗器械，可方便操作者在一只手在握住医疗器械的同时还能完成击发医疗器械的复位动作。
为解决上述技术问题，根据本发明的一个方面，采用如下技术方案：
一种医疗器械包括执行机构、连接机构以及控制机构，所述控制机构通过连接机构连接执行机构；
所述控制机构包括击发组件、复位机构以及限位组件；
所述击发组件被击发后能够向第一方向移动，实现执行机构的第一动作；
所述限位组件连接击发组件，在击发组件向第一方向移动一定距离后能限制所述击发组件向第二方向移动；
所述复位机构连接限位组件，在击发组件被限位组件限制向第二方向移动后，所述复位机构能调节所述限位组件的位置，使所述限位组件解除对击发组件的限位，使得所述击发组件可向第二方向移动。
作为本发明的一种实施方式，所述复位机构包括复位开关、传动件，所述限位组件包括限位滑块；所述复位开关与所述传动件连动，拨动所述复位开关至复位开启位置，所述传动件将驱使所述限位滑块向预设方向移动，所述限位滑块解除对所述击发组件的限位。
进一步地，所述复位开关和传动件可一体式，或分体连接。
进一步地，所述传动件是转动结构或者滑动结构。
进一步地，所述传动件为转动结构，所述复位开关与转动结构的第一端连动，拨动所述复位开关至复位开启位置，所述转动结构的第二端将驱使所述限位滑块向预设方向移动，所述限位滑块解除对所述击发组件的限位。
进一步地，所述复位机构还包括转动结构弹性件，所述限位组件还包括限位滑块弹性件，所述转动结构弹性件连接所述转动结构，所述限位滑块弹性件连接所述限位滑块。
进一步地，所述转动结构弹性件为拉簧，所述限位滑块弹性件为扭簧。
作为本发明的一种实施方式，所述限位组件包括限位滑块、第一弹性件、第一复位开关弹性件；所述复位机构包括复位开关；所述第一弹性件的第一端连接复位开关，第二端连接限位滑块，使得第一弹性件能与复位开关、限位滑块双向作用；第一复位开关弹性件一端压在复位开关上，另一端固定在外壳相应结构上；当拨动复位开关至复位开启位置，复位开关与第一弹性件的第一端连动，第一弹性件转动设定角度，第一弹性件的第二端将限位滑块向预设方向拨动，所述限位滑块解除对击发组件的限位。
进一步地，所述第一弹性件为扭簧，所述第一复位开关弹性件为扭簧。
作为本发明的一种实施方式，所述限位组件包括至少一限位块，所述限位块设置在所述复位机构上，所述复位机构包括复位开关、第二复位开关弹性件；所述击发组件包括齿条，齿条设有限位台阶；第二复位开关弹性件的一端作用于复位开关上，另一端固定于外壳相应结构上；所述限位块卡在齿条的限位台阶处；当拨动复位开关至复位开启位置，复位开关上的限位块一同向预设方向移动至非限位处，所述限位滑块解除对击发组件的限位。
进一步地，所述第二复位开关弹性件为压簧。
作为本发明的一种实施方式，所述限位组件包括至少一限位块，所述限位块设置在所述复位机构上，所述复位机构包括复位开关、第三复位开关弹性件；所述击发组件包括齿条，齿条设有限位台阶，限位台阶至少占据横向第一侧的一定宽度；所述限位块卡在齿条的限位台阶处；当拨动复位开关至复位开启位置，复位开关上的限位块一同向第二侧平移，至完全让开齿条上的限位台阶。
进一步地，所述第三复位开关弹性件为压簧。
作为本发明的一种实施方式，所述控制机构包括回拉组件，所述回拉组件连接所述击发组件，能向所述击发组件施加所述第二方向的回拉力。
进一步地，所述击发组件包括齿条，所述齿条有齿的一侧与所述扳机组件配合；所述齿条设有回拉连接机构，所述回拉组件与回拉连接机构配合。
作为本发明的一种实施方式，所述击发组件为击发齿条组件，所述击发齿条组件还包括复位帽、复位片，在复位帽被施以设定回拉力的状态下，复位帽带动复位片推开限位滑块，所述限位滑块解除对所述击发组件的限位。
作为本发明的一种实施方式，所述执行器包括夹钳、切割刀部件以及夹钳弹片；所述连接机构包括中心推杆，所述击发组件包括齿条；
所述中心推杆连接切割刀部件，所述切割刀部件在第一位置时，能压住夹钳，使得夹钳夹持夹钳弹片；所述切割刀部件在第二位置时，切割刀部件不再压住夹钳，夹钳在夹钳弹片的作用下张开；
在复位机构做出击发动作时，所述中心推杆跟随齿条一起向第二方向移动，中心推杆与切割刀部件连动，切割刀部件退至夹钳后方，切割刀部件上的挡块结构不再压住夹钳，夹钳在夹钳弹片的作用下张开。
作为本发明的一种实施方式，所述执行器为可拆卸的再装载器，或者所述执行器与连接机构连接。
进一步地，所述医疗器械包括钉仓组件，钉仓组件可拆卸地安装于所述执行器的夹钳上。
作为本发明的一种实施方式，所述医疗器械为吻合器。
本发明的有益效果在于：本发明提出的医疗器械，可方便操作者在一只手在握住医疗器械(如吻合器)的同时还能完成击发齿条的复位动作。
附图说明
图1为现有的吻合器的结构示意图。
图2为本发明一实施例中吻合器的结构示意图。
图3为本发明一实施例中吻合器的结构示意图(复位前状态并通过复位开关进行复位操作)。
图4为本发明一实施例中吻合器的结构示意图(复位后状态)。
图5为本发明一实施例中吻合器的结构示意图(复位前状态并通过复位帽进行复位操作)。
图6为本发明一实施例中吻合器限位组件的结构示意图(复位前状态)。
图7为本发明一实施例中吻合器限位组件的结构示意图(复位后状态)。
图8为本发明一实施例中吻合器限位组件的结构示意图(复位前状态)。
图9为本发明一实施例中吻合器限位组件的结构示意图(复位后状态)。
图10为本发明一实施例中吻合器限位组件的结构示意图(复位前状态主视图)。
图11为本发明一实施例中吻合器限位组件的结构示意图(复位前状态侧视图)。
图12为本发明一实施例中吻合器限位组件的结构示意图(复位后状态)。
图13为本发明一实施例中吻合器的回拉组件结构示意图。
图14为本发明一实施例中吻合器的执行机构结构示意图。
图15为本发明一实施例中吻合器的传动件为滑动结构的结构示意图。
具体实施方式
下面结合附图详细说明本发明的优选实施例。
为了进一步理解本发明，下面结合实施例对本发明优选实施方案进行描述，但是应当理解，这些描述只是为进一步说明本发明的特征和优点，而不是对本发明权利要求的限制。
该部分的描述只针对几个典型的实施例，本发明并不仅局限于实施例描述的范围。相同或相近的现有技术手段与实施例中的一些技术特征进行相互替换也在本发明描述和保护的范围内。
在附图和下面的说明书中，其中相似的附图标记表示相似或相同的元件，按照惯例，术
语“近端”将指的是在使用中设备的最靠近操作员的一端，而术语“远侧”将指的是设备的最远离操作员的一端。
本发明揭示了一种医疗器械，所述医疗器械包括：执行机构、连接机构以及控制机构，所述控制机构通过连接机构连接执行机构；所述控制机构包括击发组件、复位机构以及限位组件。所述击发组件被击发后能够向第一方向移动，实现执行机构的第一动作。所述限位组件连接击发组件，在击发组件向第一方向移动一定距离后能限制所述击发组件向第二方向移动。所述复位机构连接限位组件，在击发组件被限位组件限制向第二方向移动后，所述复位机构能调节所述限位组件的位置，使所述限位组件解除对击发组件的限位，使得所述击发组件可向第二方向移动。
在本发明的一实施例中，第一方向为沿击发组件中心向远端移动方向，第二方向为沿击发组件中心向近端移动方向；执行机构的第一动作为执行器的夹紧动作(当然也可以是张开动作，可根据需要设定第一动作和复位动作)。
图2为本发明一实施例中吻合器的结构示意图；请参阅图2，在本发明的一实施例中，所述医疗器械为吻合器1，吻合器1包括前端执行器4(作为上述的执行机构)、中间连接体5(作为上述的连接机构)和位于后端的手柄部分2(作为上述的控制机构)，所述手柄部分包括击发齿条组件3、复位机构以及限位组件。在本发明的一实施例中，复位机构包括复位开关7。
其中，复位开关7的形式不限于按钮或按键等，其位置不限于侧面或后端部分。复位开关7从关闭切换到开启，与复位开关7连动的限位组件解除对击发齿条组件3的限位，使得击发齿条组件3复位。
在本发明的一实施例中，所述复位机构包括复位开关、传动件，所述限位组件包括限位滑块；所述复位开关与传动件连动，拨动所述复位开关至复位开启位置，所述传动件将限位滑块向预设方向移动，所述限位滑块解除对所述击发组件的限位。在一实施例中，所述复位机构还包括转动结构弹性件，所述限位组件还包括限位滑块弹性件，所述转动结构弹性件连接所述转动结构，所述限位滑块弹性件连接所述限位滑块。
进一步地，所述复位开关和传动件可一体式，或分体连接。
在本发明的一实施例中，所述执行器包括夹钳、切割刀部件以及夹钳弹片；所述连接机构包括中心推杆，所述击发组件包括齿条；所述中心推杆连接切割刀部件，所述切割刀部件在第一位置时，能压住夹钳，使得夹钳夹持夹钳弹片；所述切割刀部件在第二位置时，切割刀部件不再压住夹钳，夹钳在夹钳弹片的作用下张开；在复位机构做出击发动作时，所述中 心推杆也跟随齿条一起向第二方向移动，中心推杆与切割刀部件连动，切割刀部件退至夹钳后方，切割刀部件上的挡块结构不再压住夹钳，夹钳在夹钳弹片的作用下张开。
在一实施例中，所述传动件是转动结构。
图3为本发明一实施例中吻合器的结构示意图(复位前状态并通过复位开关进行复位操作)；请参阅图3，在本发明的一实施例中，击发齿条组件3包括齿条33。复位机构包括复位开关7、转动片71、转动片拉簧72。前端执行器4包括夹钳41，切割刀部件42，夹钳弹片43；夹钳41上的钉仓411既可为固定式钉仓也可为拆卸替换式钉仓。限位组件8包括限位滑块83、限位滑块扭簧84；转动片拉簧72连接转动片71，限位滑块扭簧84连接限位滑块83。
在本发明的一实施例中，通过复位开关7进行复位操作，吻合器各组件零件相互作用关系如下：
如图3所示，图3中复位开关7为关闭状态，此时，夹钳41处于夹紧状态。当逆时针拨动复位开关7一定角度至复位开启位置，复位开关7与转动片71的左端连动，转动片71顺时针转动一定角度，转动片71右端将限位滑块83压下后，让开齿条33上对应的限位台阶331，齿条33被施加一回力被拉至复位，中心推杆51也跟随齿条33一起后退，中心推杆51与切割刀部件42连动，切割刀部件42退至夹钳41后方，切割刀部件42上的挡块结构421不再压住夹钳41，夹钳41在夹钳弹片43的作用下张开。如图4所示，为复位开关7的启动状态，夹钳41处于张开状态。其中转动片拉簧82和限位滑块扭簧84为限位组件8提供限位保持力。
如图13所示，在一实施例中，所述手柄部分还包括回拉组件6。回拉组件6一端连接击发齿条组件3，另一端固定在外壳相应结构上，能向所述击发组件施加第二方向的回拉力。结合图3和图13，当逆时针拨动复位开关7一定角度至复位开启位置，转动片71右端将限位滑块83下压后，让开齿条33上的限位台阶331，齿条33在齿条挡块61的作用下被拉至复位。
图5为本发明一实施例中吻合器的结构示意图(复位前状态并通过复位帽进行复位操作)；请参阅图5，在本发明的另一实施例中，击发齿条组件3包括复位帽31、复位片32和齿条33，可通过复位帽31进行复位操作，各组件零件相互作用关系如下：回拉复位帽31，带动复位片32推开压下限位组件8中的限位滑块83，击发齿条组件3手动拉回复位。
在一实施例中，所述传动件是滑动结构。
如图15所示，所述传动件例如为滑动结构73。滑动结构73一端连接复位开关，另一端连接限位滑块83。拨动复位开关，滑动结构73可沿着预设轨迹滑动。所述滑动结构可以沿着预设轨迹滑动，例如直线滑动或者曲线滑动。当滑动结构73将限位滑块83向预设方向移动后，让开齿条33上的限位台阶331，限位滑块83解除对击发组件的限位。
在本发明的一实施例中，所述限位组件包括限位滑块、第一弹性件、第一复位开关弹性件；所述复位机构包括复位开关；所述第一弹性件的第一端连接复位开关，第二端连接限位滑块，使得第一弹性件能与复位开关、限位滑块双向作用；第一复位开关弹性件一端压在复位开关上，另一端固定在外壳相应结构上；当拨动复位开关至复位开启位置，复位开关与第一弹性件的第一端连动，第一弹性件转动设定角度，第一弹性件的第二端将限位滑块向预设方向拨动，所述限位滑块解除对击发组件的限位。第一复位开关弹性件为复位开关停留于限位位置提供保持力，第一弹性件还为复位开关停留于在限位位置提供保持力。
图6为本发明一实施例中吻合器限位组件的结构示意图(复位前状态)，图7为本发明一实施例中吻合器限位组件的结构示意图(复位后状态)；请参阅图6、图7，在本发明的一实施例中，限位组件8包括限位滑块83、第一弹性件85、第一复位开关弹性件86；其中第一弹性件85的左端穿入复位开关7中，右端穿入限位滑块83中，使得第一弹性件85能与复位开关7、限位滑块83双向作用。第一复位开关弹性件86一端压在复位开关7上，另一端固定在外壳相应结构上。限位组件8中各组件零件相互作用关系如下：逆时针拨动复位开关7一定角度至复位开启位置，复位开关7与第一弹性件85的左端连动，第一弹性件85顺时针转动一定角度，第一弹性件85右端将限位滑块83向下拨动。其中，第一复位开关弹性件86为复位开关7停留于限位位置提供保持力，第一弹性件85还为复位开关7停留于在限位位置提供保持力。在一实施例中，第一弹性件85为扭簧，第一复位开关弹性件86为扭簧。
在本发明的一实施例中，所述限位组件包括至少一限位块，所述限位块设置在所述复位机构上，所述复位机构包括复位开关、第二复位开关弹性件；所述击发组件包括齿条，齿条设有限位台阶；第二复位开关弹性件的一端作用于复位开关上，另一端固定于外壳相应结构上；所述限位块卡在齿条的限位台阶处；当拨动复位开关至复位开启位置，复位开关上的限位块一同向预设方向移动至非限位处，所述限位滑块解除对击发组件的限位。第二复位开关弹性件为复位开关停留于限位位置提供保持力。
图8为本发明一实施例中吻合器限位组件的结构示意图(复位前状态)，图9为本发明一实施例中吻合器限位组件的结构示意图(复位后状态)；
限位组件为一限位块71，限位块71设置在复位机构上。限位块71与齿条33上限位台阶331对应设置。复位机构包括复位开关7、第二复位开关弹性件87。第二复位开关弹性件87一端作用于复位开关7上，另一端固定于外壳相应结构上。如图8所示，限位块71卡在齿条33的限位台阶331处。向下拨动复位开关7一定距离至复位开启位置，限位结构71一同向下移动至非限位处，如图9所示。第二复位开关弹性件87为复位开关7停留于限位位置提供保 持力。在一实施例中，第二复位开关弹性件87为压簧。
在本发明的一实施例中，所述限位组件包括至少一限位块，所述限位块设置在所述复位机构上，所述复位机构包括复位开关、第三复位开关弹性件；所述击发组件包括齿条，齿条设有限位台阶，限位台阶至少占据横向第一侧的一定宽度；所述限位块卡在齿条的限位台阶处；当拨动复位开关至复位开启位置，复位开关上的限位块一同向第二侧平移，至完全让开齿条上的限位台阶。第三复位开关弹性件为复位开关停留于限位位置提供保持力。
图10至图12为本发明一实施例中吻合器限位组件的结构示意图；请参阅图10至图12，在本发明的一实施例中，限位组件为一限位块71，限位块71设置在复位机构上。复位机构包括复位开关7、第三复位开关弹性件88(复位开关7也可以独立于限位组件8而存在)；限位块71与齿条33上限位台阶331对应设置。如图11所示，限位块71卡在齿条33的限位台阶331处。按下复位开关7至复位开启位置，限位块71一同向右平移(对应上限位块一同向第二侧平移)，至完全让开齿条33上限位台阶331，限位台阶331占据横向左侧的一定宽度(对应上述限位台阶占据横向第一侧一定宽度)，如图12所示。第三复位开关弹性件88为复位开关7停留于限位位置提供保持力。在一实施例中，第三复位开关弹性件88为压簧。
图14为本发明一实施例中吻合器的执行机构的结构示意图。请参阅图14，在本发明的一实施例中，所述执行器4为再装载器(例如钉匣)，可拆卸地与中间连接体5连接。在另一实施例中，执行器为端部执行器，与中间连接体5连接(图未示)。在一实施例中，钉仓组件可拆卸地安装于所述执行器的夹钳上。
综上所述，本发明提出的医疗器械，可方便操作者在一只手在握住医疗器械(如吻合器)的同时还能完成击发齿条的复位动作。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
这里本发明的描述和应用是说明性的，并非想将本发明的范围限制在上述实施例中。这里所披露的实施例的变形和改变是可能的，对于那些本领域的普通技术人员来说实施例的替换和等效的各种部件是公知的。本领域技术人员应该清楚的是，在不脱离本发明的精神或本质特征的情况下，本发明可以以其它形式、结构、布置、比例，以及用其它组件、材料和部件来实现。在不脱离本发明范围和精神的情况下，可以对这里所披露的实施例进行其它变形和改变。

Claims (19)

  1. 一种医疗器械，其特征在于，所述医疗器械包括：执行机构、连接机构以及控制机构，所述控制机构通过连接机构连接执行机构；
    所述控制机构包括击发组件、复位机构以及限位组件；
    所述击发组件被击发后能够向第一方向移动，实现执行机构的第一动作；
    所述限位组件连接击发组件，在击发组件向第一方向移动一定距离后能限制所述击发组件向第二方向移动；
    所述复位机构连接限位组件，在击发组件被限位组件限制向第二方向移动后，所述复位机构能调节所述限位组件的位置，使所述限位组件解除对击发组件的限位，使得所述击发组件可向第二方向移动。
  2. 根据权利要求1所述的医疗器械，其特征在于：
    所述复位机构包括复位开关、传动件，所述限位组件包括限位滑块；
    所述复位开关与所述传动件连动，拨动所述复位开关至复位开启位置，所述传动件将驱使所述限位滑块向预设方向移动，所述限位滑块解除对所述击发组件的限位。
  3. 根据权利要求2所述的医疗器械，其特征在于：
    所述传动件是转动结构或者滑动结构。
  4. 根据权利要求2所述的医疗器械，其特征在于：
    所述传动件为转动结构，所述复位开关与转动结构的第一端连动，拨动所述复位开关至复位开启位置，所述转动结构的第二端将驱使所述限位滑块向预设方向移动，所述限位滑块解除对所述击发组件的限位。
  5. 根据权利要求2所述的医疗器械，其特征在于：
    所述复位机构还包括转动结构弹性件，所述限位组件还包括限位滑块弹性件，所述转动结构弹性件连接所述转动结构，所述限位滑块弹性件连接所述限位滑块。
  6. 根据权利要求5所述的医疗器械，其特征在于：
    所述转动结构弹性件为拉簧，所述限位滑块弹性件为扭簧。
  7. 根据权利要求1所述的医疗器械，其特征在于：
    所述限位组件包括限位滑块、第一弹性件、第一复位开关弹性件；所述复位机构包括复位开关；
    所述第一弹性件的第一端连接复位开关，第二端连接限位滑块，使得第一弹性件能与复位开关、限位滑块双向作用；第一复位开关弹性件一端压在复位开关上，另一端固定在外壳相应结构上；
    当拨动复位开关至复位开启位置，复位开关与第一弹性件的第一端连动，第一弹性件转动设定角度，第一弹性件的第二端将限位滑块向预设方向拨动，所述限位滑块解除对击发组件的限位。
  8. 根据权利要求7所述的医疗器械，其特征在于：
    所述第一弹性件为扭簧，所述第一复位开关弹性件为扭簧。
  9. 根据权利要求1所述的医疗器械，其特征在于：
    所述限位组件包括至少一限位块，所述限位块设置在所述复位机构上，所述复位机构包括复位开关、第二复位开关弹性件；所述击发组件包括齿条，齿条设有限位台阶；
    第二复位开关弹性件的一端作用于复位开关上，另一端固定于外壳相应结构上；所述限位块卡在齿条的限位台阶处；
    当拨动复位开关至复位开启位置，复位开关上的限位块一同向预设方向移动至非限位处，所述限位滑块解除对击发组件的限位。
  10. 根据权利要求9所述的医疗器械，其特征在于：
    所述第二复位开关弹性件为压簧。
  11. 根据权利要求1所述的医疗器械，其特征在于：
    所述限位组件包括至少一限位块，所述限位块设置在所述复位机构上，所述复位机构包括复位开关、第三复位开关弹性件；所述击发组件包括齿条，齿条设有限位台阶，限位台阶至少占据横向第一侧的一定宽度；
    所述限位块卡在齿条的限位台阶处；
    当拨动复位开关至复位开启位置，复位开关上的限位块一同向第二侧平移，至完全让 开齿条上的限位台阶。
  12. 根据权利要求11所述的医疗器械，其特征在于：
    所述第三复位开关弹性件为压簧。
  13. 根据权利要求1所述的医疗器械，其特征在于：
    所述控制机构包括回拉组件，所述回拉组件连接所述击发组件，能向所述击发组件施加所述第二方向的回拉力。
  14. 根据权利要求13所述的医疗器械，其特征在于：
    所述击发组件包括齿条，所述齿条有齿的一侧与所述扳机组件配合；所述齿条设有回拉连接机构，所述回拉组件与回拉连接机构配合。
  15. 根据权利要求2-8任意一项所述的医疗器械，其特征在于：
    所述击发组件为击发齿条组件，所述击发齿条组件还包括复位帽、复位片，在复位帽被施以设定回拉力的状态下，复位帽带动复位片推开限位滑块，所述限位滑块解除对所述击发组件的限位。
  16. 根据权利要求1所述的医疗器械，其特征在于：
    所述执行器包括夹钳、切割刀部件以及夹钳弹片；所述连接机构包括中心推杆，所述击发组件包括齿条；
    所述中心推杆连接切割刀部件，所述切割刀部件在第一位置时，能压住夹钳，使得夹钳夹持夹钳弹片；所述切割刀部件在第二位置时，切割刀部件不再压住夹钳，夹钳在夹钳弹片的作用下张开；
    在复位机构做出击发动作时，所述中心推杆跟随齿条一起向第二方向移动，中心推杆与切割刀部件连动，切割刀部件退至夹钳后方，切割刀部件上的挡块结构不再压住夹钳，夹钳在夹钳弹片的作用下张开。
  17. 根据权利要求1所述的医疗器械，其特征在于：
    所述执行器为可拆卸的再装载器，或者所述执行器与连接机构连接。
  18. 根据权利要求15所述的医疗器械，其特征在于：
    所述医疗器械包括钉仓组件，钉仓组件可拆卸地安装于所述执行器的夹钳上。
  19. 根据权利要求1所述的医疗器械，其特征在于：
    所述医疗器械为吻合器。
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