CN115040182A - A surgical instrument, stapler and cartridge assembly - Google Patents

Abstract

A surgical instrument that includes a handle assembly, a barrel assembly, a staple cartridge assembly, and an effector assembly is disclosed. The proximal end of the barrel assembly is connected to a handle assembly, which includes a drive mechanism. The actuator assembly comprises a first jaw and a second jaw, an installation cavity is formed between the first jaw and the second jaw, the nail bin assembly is arranged in the installation cavity, and the transmission mechanism extends into the installation cavity. The actuator assembly has a locking portion for locking with the drive mechanism to prevent axial movement of the drive mechanism along the actuator assembly. The transmission mechanism is provided with a first unlocking part, the nail bin assembly is provided with a second unlocking part, and when the nail bin assembly is installed in the installation cavity, the first unlocking part is matched with the second unlocking part so that the locking part is unlocked with the transmission mechanism. The safety function can be realized only by adding features on the existing parts without adding safety clamping pieces and spring driving structures with complex structures, so that the reliability of the safety function is improved.

Description

Translated fromChinese

一种外科手术器械、吻合器和钉仓组件A surgical instrument, stapler and cartridge assembly

技术领域technical field

本申请涉及医疗器械技术领域，具体涉及一种外科手术器械、吻合器和钉仓组件。The present application relates to the technical field of medical instruments, in particular to a surgical instrument, a stapler and a staple cartridge assembly.

背景技术Background technique

目前，微创手术占据了外科手术中的重要地位，而吻合器是微创手术中常用的手术器械。吻合器的工作原理是通过将远端执行器的钳口夹持在病灶部位附近的特定位置，通过远端执行器的切割刀对组织进行切除，并在切除的同时通过远端执行器的钉仓组件进行缝合。At present, minimally invasive surgery occupies an important position in surgery, and stapler is a commonly used surgical instrument in minimally invasive surgery. The working principle of the stapler is that by clamping the jaws of the distal effector at a specific position near the lesion site, the tissue is cut through the cutting knife of the distal effector, and the nails of the distal effector are passed through the distal effector at the same time. The compartment assembly is sutured.

远端执行器通常使用一次性的钉仓组件，一次性钉仓组件的内部设置保险装置，用以防止钉仓组件被触发装置二次触发。但是，一方面，现有的保险装置通常需要在触发装置运动路径上安装结构复杂的保险卡件和弹簧驱动机构，参与运动的零件较多，且对保险卡件的强度有较高要求，这导致保险装置的可靠性下降，且保险卡件失效后有掉落到人体内的风险。另一方面，现有的吻合器中，远端执行器的切割刀通常与驱动件固定连接，因此在对钉仓组件进行更换时无法对切割刀进行更换，切割刀的重复使用会降低切割刀的锋利度，从而降低手术质量，带来一定的医疗风险。The distal effector usually uses a disposable staple cartridge assembly, and a safety device is provided inside the disposable staple cartridge assembly to prevent the staple cartridge assembly from being triggered twice by the triggering device. However, on the one hand, the existing safety device usually needs to install a safety card with a complex structure and a spring drive mechanism on the movement path of the trigger device. There are many parts involved in the movement, and there is a high requirement for the strength of the safety card. As a result, the reliability of the safety device is reduced, and there is a risk of falling into the human body after the failure of the safety card. On the other hand, in the existing stapler, the cutting blade of the distal end effector is usually fixedly connected with the driving member, so the cutting blade cannot be replaced when the staple cartridge assembly is replaced, and the repeated use of the cutting blade will reduce the cutting blade Sharpness, thereby reducing the quality of surgery and bringing certain medical risks.

发明内容SUMMARY OF THE INVENTION

本发明主要解决的技术问题是：现有的保险装置可靠性较低、存在保险卡件掉落的风险，且现有的吻合器在对钉仓组件进行更换时无法对切割刀进行更换，切割刀的重复使用会降低切割刀的锋利度，从而降低手术质量。The main technical problems solved by the present invention are: the reliability of the existing safety device is low, there is a risk of the safety card falling off, and the existing stapler cannot replace the cutting blade when replacing the staple cartridge assembly, cutting Repeated use of the knife can reduce the sharpness of the cutting knife, thereby reducing the quality of the surgery.

第一方面，一种实施例中提供一种外科手术器械，包括：In a first aspect, an embodiment provides a surgical instrument, comprising:

手柄组件；handle assembly;

枪管组件，所述枪管组件的近端与手柄组件连接，所述枪管组件包括传动机构；a barrel assembly, the proximal end of the barrel assembly is connected with the handle assembly, and the barrel assembly includes a transmission mechanism;

钉仓组件，所述钉仓组件包括安装座、推钉件和切割刀，所述安装座具有多个用于安装缝合钉的安装位，所述推钉件活动设置在所述安装座上，所述切割刀与所述安装座活动连接，所述推钉件和所述切割刀能够从安装座的近端向远端运动；以及A staple cartridge assembly, the staple cartridge assembly includes a mounting seat, a nail pusher and a cutting knife, the mounting seat has a plurality of mounting positions for installing staples, and the nail pusher is movably arranged on the mounting seat, The cutting blade is movably connected with the mounting seat, and the nail pusher and the cutting blade can move from the proximal end to the distal end of the mounting seat; and

执行器组件，所述枪管组件的远端与所述执行器组件连接，所述执行器组件包括第一钳口和第二钳口，所述第一钳口与第二钳口活动连接，所述第一钳口和第二钳口能够相对运动以实现闭合和打开；所述第一钳口和第二钳口之间形成安装腔体，所述钉仓组件设置于所述安装腔体内，所述传动机构延伸到所述安装腔体内；an actuator assembly, the distal end of the barrel assembly is connected with the actuator assembly, the actuator assembly includes a first jaw and a second jaw, the first jaw is movably connected with the second jaw, The first jaw and the second jaw can move relatively to achieve closing and opening; an installation cavity is formed between the first jaw and the second jaw, and the staple cartridge assembly is arranged in the installation cavity , the transmission mechanism extends into the installation cavity;

所述执行器组件具有锁定部，所述锁定部用于与所述传动机构锁定，以阻止所述传动机构沿所述执行器组件的轴向运动；所述传动机构具有第一解锁部，所述钉仓组件具有第二解锁部，所述钉仓组件安装在所述安装腔体内时，所述第一解锁部与所述第二解锁部配合，以使所述锁定部与所述传动机构解锁；所述锁定部与所述传动机构解锁时，所述传动机构能够驱动推钉件和切割刀从安装座的近端向远端运动。The actuator assembly has a locking part, and the locking part is used for locking with the transmission mechanism to prevent the transmission mechanism from moving in the axial direction of the actuator assembly; the transmission mechanism has a first unlocking part, so The staple cartridge assembly has a second unlocking portion, and when the staple cartridge assembly is installed in the installation cavity, the first unlocking portion cooperates with the second unlocking portion, so that the locking portion is connected to the transmission mechanism Unlocking; when the locking portion and the transmission mechanism are unlocked, the transmission mechanism can drive the nail pusher and the cutting knife to move from the proximal end of the mounting seat to the distal end.

一种实施例中，所述锁定部与所述传动机构的远端抵触，以实现与所述传动机构的锁定；所述钉仓组件正确安装在所述安装腔体内时，所述第一解锁部与所述第二解锁部接触，以带动所述传动机构的远端脱离所述锁定部，从而实现与所述传动机构的解锁。In an embodiment, the locking portion interferes with the distal end of the transmission mechanism to achieve locking with the transmission mechanism; when the staple cartridge assembly is correctly installed in the installation cavity, the first unlocking The second unlocking portion is in contact with the second unlocking portion to drive the distal end of the transmission mechanism to disengage from the locking portion, thereby realizing the unlocking of the transmission mechanism.

一种实施例中，所述第一解锁部配置为朝向钉仓组件延伸的凸出部，所述第二解锁部配置为解锁槽，所述凸出部具有第一解锁导向面，所述解锁槽具有第二解锁导向面；所述凸出部嵌入所述解锁槽时，所述第一解锁导向面与第二解锁导向面接触，用以带动所述传动机构脱离所述锁定部。In one embodiment, the first unlocking portion is configured as a protruding portion extending toward the staple cartridge assembly, the second unlocking portion is configured as an unlocking slot, the protruding portion has a first unlocking guide surface, and the unlocking portion is configured as an unlocking groove. The slot has a second unlocking guide surface; when the protruding portion is inserted into the unlocking slot, the first unlocking guide surface contacts the second unlocking guide surface, so as to drive the transmission mechanism to disengage from the locking portion.

一种实施例中，所述第二解锁部位于所述切割刀朝向所述传动机构的一侧。In one embodiment, the second unlocking portion is located on the side of the cutting blade facing the transmission mechanism.

一种实施例中，所述第二解锁部位于所述推钉件朝向所述传动机构的一侧。In one embodiment, the second unlocking portion is located on the side of the nail pushing member facing the transmission mechanism.

一种实施例中，所述第二解锁件位于所述安装座朝向所述传动机构的一侧。In one embodiment, the second unlocking member is located on the side of the mounting seat facing the transmission mechanism.

一种实施例中，所述传动机构朝向所述钉仓组件的一侧具有配合槽，所述配合槽用于与所述切割刀配合。In one embodiment, a side of the transmission mechanism facing the staple cartridge assembly has a matching groove, and the matching groove is used for matching with the cutting knife.

一种实施例中，所述切割刀连接于所述推钉件朝向所述传动机构的一侧，所述第二解锁部位于所述切割刀朝向所述传动机构的一侧；所述第一解锁部配置为朝向钉仓组件延伸的凸出部，所述第二解锁部配置为解锁槽，所述凸出部具有第一解锁导向面，所述解锁槽具有第二解锁导向面；所述凸出部嵌入所述解锁槽时，所述第一解锁导向面与第二解锁导向面接触，用以带动所述传动机构脱离所述锁定部；所述传动机构朝向所述钉仓组件的一侧具有配合槽，所述配合槽用于与所述切割刀配合。In an embodiment, the cutting knife is connected to the side of the nail pushing member facing the transmission mechanism, and the second unlocking portion is located on the side of the cutting knife facing the transmission mechanism; the first The unlocking portion is configured as a protruding portion extending toward the staple cartridge assembly, the second unlocking portion is configured as an unlocking slot, the protruding portion has a first unlocking guide surface, and the unlocking slot has a second unlocking guide surface; the When the protruding part is inserted into the unlocking groove, the first unlocking guide surface contacts the second unlocking guide surface, so as to drive the transmission mechanism to disengage from the locking part; the transmission mechanism faces a first part of the staple cartridge assembly. The side has a mating groove for mating with the cutting knife.

一种实施例中，所述锁定部沿所述垂直于所述执行器组件的远端和近端连线的方向延伸。In one embodiment, the locking portion extends along the direction perpendicular to the line connecting the distal end and the proximal end of the actuator assembly.

一种实施例中，所述执行器组件还包括锁定弹片，所述锁定弹片位于所述传动机构的运动路径上，所述锁定弹片的弹性回复力用于驱动所述传动机构运动至与所述锁定部锁定。In an embodiment, the actuator assembly further includes a locking spring piece, the locking spring piece is located on the movement path of the transmission mechanism, and the elastic restoring force of the locking spring piece is used to drive the transmission mechanism to move to the same position as the transmission mechanism. The locking part is locked.

一种实施例中，所述传动机构包括配合件和驱动件，所述第一解锁部位于所述配合件朝向钉仓组件的一侧，所述驱动件与配合件连接，所述驱动件具有背离所述配合件延伸的凸起结构，所述锁定弹片可与所述凸起结构抵触。In one embodiment, the transmission mechanism includes a fitting member and a driving member, the first unlocking portion is located on the side of the fitting member facing the staple cartridge assembly, the driving member is connected with the fitting member, and the driving member has A protruding structure extending away from the matching piece, the locking elastic piece can collide with the protruding structure.

一种实施例中，所述钉仓组件还包括卡扣件，所述传动机构具有卡接部，所述卡扣件朝向所述传动机构的自由端能够靠近和远离所述安装座上的组织结合面运动，以实现与所述卡接部的卡接和解除卡接。In one embodiment, the staple cartridge assembly further includes a clip, the transmission mechanism has a clip portion, and the free end of the clip towards the transmission mechanism can approach and move away from the tissue on the mounting seat The joint surface moves, so as to realize the clamping and release of the clamping part with the clamping part.

一种实施例中，所述卡扣件连接于所述切割刀。In one embodiment, the clip is connected to the cutting blade.

一种实施例中，所述卡扣件的至少部分为弹性结构，所述安装座具有卡接导向面，所述传动机构带动所述推钉件和切割刀沿所述卡接导向面向所述执行器组件的远端运动时，所述卡接导向面与所述卡扣件抵触，以使所述卡扣件发生形变，并带动所述卡扣件的自由端靠近安装座上的组织结合面运动，以实现与所述卡接部卡接；所述传动机构带动所述推钉件和切割刀沿所述卡接导向面向所述执行器组件的近端运动时，所述卡扣件在弹性结构的弹性回复力作用下恢复形变，并带动所述卡扣件的自由端远离安装座上的组织结合面运动，以实现与所述卡接部解除卡接。In an embodiment, at least a part of the clip is an elastic structure, the mounting seat has a clip guide surface, and the transmission mechanism drives the nail pusher and the cutting knife to face the clip guide along the clip guide. When the distal end of the actuator assembly moves, the snap guide surface collides with the snap piece, so that the snap piece is deformed, and drives the free end of the snap piece to be close to the tissue combination on the mounting seat When the driving mechanism drives the nail pushing member and the cutting knife to move along the clamping guide and face the proximal end of the actuator assembly, the locking member Under the action of the elastic restoring force of the elastic structure, the deformation is restored, and the free end of the clip is driven to move away from the tissue joint surface on the mounting seat, so as to realize the release of the clip from the clip part.

第二方面，一种实施例中提供一种吻合器，包括：In a second aspect, an embodiment provides a stapler, comprising:

手柄组件；handle assembly;

枪管组件，所述枪管组件的近端与手柄组件连接，所述枪管组件包括传动机构；a barrel assembly, the proximal end of the barrel assembly is connected with the handle assembly, and the barrel assembly includes a transmission mechanism;

执行器组件，所述枪管组件的远端与所述执行器组件连接，所述执行器组件包括第一钳口和第二钳口，所述第一钳口与第二钳口活动连接，所述第一钳口和第二钳口能够相对运动以实现闭合和打开；an actuator assembly, the distal end of the barrel assembly is connected with the actuator assembly, the actuator assembly includes a first jaw and a second jaw, the first jaw is movably connected with the second jaw, The first jaw and the second jaw are capable of relative movement to achieve closing and opening;

所述第一钳口和第二钳口之间形成用于安装钉仓组件的安装腔体；所述传动机构延伸到所述安装腔体内；所述执行器组件具有锁定部，所述锁定部用于与所述传动机构锁定，以阻止所述传动机构沿所述执行器组件的轴向运动；所述传动机构具有第一解锁部，所述第一解锁部用于与钉仓组件的第二解锁部配合，以使所述锁定部与所述传动机构解锁；所述锁定部与所述传动机构解锁时，所述传动机构能够驱动钉仓组件的推钉件和切割刀从安装座的近端向远端运动。An installation cavity for installing the staple cartridge assembly is formed between the first jaw and the second jaw; the transmission mechanism extends into the installation cavity; the actuator assembly has a locking portion, and the locking portion It is used for locking with the transmission mechanism to prevent the transmission mechanism from moving in the axial direction of the actuator assembly; the transmission mechanism has a first unlocking part, and the first unlocking part is used for connecting with the first unlocking part of the staple cartridge assembly. The two unlocking parts cooperate to unlock the locking part and the transmission mechanism; when the locking part and the transmission mechanism are unlocked, the transmission mechanism can drive the nail pusher and the cutting knife of the staple cartridge assembly from the mounting seat. Proximal to distal movement.

一种实施例中，所述锁定部与所述传动机构的远端抵触，以实现与所述传动机构的锁定；所述钉仓组件正确安装在所述安装腔体内时，所述第一解锁部用于与所述第二解锁部接触，以带动所述传动机构的远端脱离所述锁定部，从而实现与所述传动机构的解锁。In an embodiment, the locking portion interferes with the distal end of the transmission mechanism to achieve locking with the transmission mechanism; when the staple cartridge assembly is correctly installed in the installation cavity, the first unlocking The part is used for contacting with the second unlocking part, so as to drive the distal end of the transmission mechanism to disengage from the locking part, so as to realize the unlocking of the transmission mechanism.

一种实施例中，所述第一解锁部配置为朝向钉仓组件延伸的凸出部，所述钉仓组件的第二解锁部配置为解锁槽，所述凸出部具有第一解锁导向面，所述解锁槽具有第二解锁导向面；所述凸出部嵌入所述解锁槽时，所述第一解锁导向面与第二解锁导向面接触，用以带动所述传动机构脱离所述锁定部。In one embodiment, the first unlocking portion is configured as a protruding portion extending toward the staple cartridge assembly, the second unlocking portion of the staple cartridge assembly is configured as an unlocking groove, and the protruding portion has a first unlocking guide surface , the unlocking groove has a second unlocking guide surface; when the protruding portion is inserted into the unlocking groove, the first unlocking guide surface contacts the second unlocking guide surface to drive the transmission mechanism to disengage the lock department.

一种实施例中，所述传动机构朝向所述钉仓组件的一侧具有配合槽，所述配合槽用于与钉仓组件的切割刀配合。In one embodiment, a side of the transmission mechanism facing the staple cartridge assembly has a matching groove, and the matching groove is used for matching with a cutting knife of the staple cartridge assembly.

一种实施例中，所述锁定部沿所述远端执行器的径向延伸。In one embodiment, the locking portion extends radially of the distal effector.

一种实施例中，还包括锁定弹片，所述锁定弹片位于所述传动机构和驱动件的运动路径上，所述锁定弹片的弹性回复力用于驱动所述传动机构运动至与所述锁定部抵触。In one embodiment, it further includes a locking elastic piece, the locking elastic piece is located on the movement path of the transmission mechanism and the driving member, and the elastic restoring force of the locking elastic piece is used to drive the transmission mechanism to move to the locking portion. conflict.

一种实施例中，所述传动机构包括配合件和驱动件，所述第一解锁部位于所述配合件朝向钉仓组件的一侧，所述驱动件与配合件连接，所述驱动件具有背离所述配合件延伸的凸起结构，所述锁定弹片与所述凸起结构抵触。In one embodiment, the transmission mechanism includes a fitting member and a driving member, the first unlocking portion is located on the side of the fitting member facing the staple cartridge assembly, the driving member is connected with the fitting member, and the driving member has A protruding structure extending away from the matching piece, the locking elastic piece collides with the protruding structure.

第三方面，一种实施例中提供一种钉仓组件，包括：In a third aspect, an embodiment provides a staple cartridge assembly, comprising:

安装座，所述安装座具有多个用于安装缝合钉的安装位；a mounting seat, the mounting seat has a plurality of mounting positions for installing staples;

推钉件，所述推钉件活动设置在所述安装座上；以及a nail pusher, the nail pusher is movably arranged on the mounting seat; and

切割刀，所述切割刀与所述安装座连接，所述推钉件和所述切割刀能够从安装座的近端向远端运动；所述钉仓组件具有第二解锁部，所述第二解锁部用于与吻合器的第一解锁部配合，以使吻合器的传动机构与所述吻合器的执行器组件的锁定部解锁。a cutting knife, the cutting knife is connected with the mounting seat, the nail pushing member and the cutting knife can move from the proximal end to the distal end of the mounting seat; the staple cartridge assembly has a second unlocking part, the first The two unlocking parts are used to cooperate with the first unlocking part of the stapler to unlock the transmission mechanism of the stapler and the locking part of the actuator assembly of the stapler.

一种实施例中，所述第二解锁部用于与传动机构的第一解锁部配合，以使吻合器的传动机构与所述吻合器的执行器组件的锁定部解锁。In one embodiment, the second unlocking portion is configured to cooperate with the first unlocking portion of the transmission mechanism, so as to unlock the transmission mechanism of the stapler and the locking portion of the actuator assembly of the stapler.

一种实施例中，所述第二解锁部位于所述切割刀朝向所述配合件的一侧。In one embodiment, the second unlocking portion is located on the side of the cutting blade facing the fitting member.

一种实施例中，所述第二解锁部位于所述推钉件朝向所述配合件的一侧。In one embodiment, the second unlocking portion is located on a side of the nail pushing member facing the fitting member.

一种实施例中，所述第二解锁件位于所述安装座朝向所述配合件的一侧。In one embodiment, the second unlocking member is located on the side of the mounting seat facing the matching member.

一种实施例中，所述第一解锁部配置为朝向钉仓组件延伸的凸出部，所述第二解锁部配置为解锁槽，所述凸出部具有第一解锁导向面，所述解锁槽具有第二解锁导向面；所述凸出部嵌入所述解锁槽时，所述第一解锁导向面与第二解锁导向面接触，用以带动所述配合件脱离所述锁定部。In one embodiment, the first unlocking portion is configured as a protruding portion extending toward the staple cartridge assembly, the second unlocking portion is configured as an unlocking slot, the protruding portion has a first unlocking guide surface, and the unlocking portion is configured as an unlocking groove. The groove has a second unlocking guide surface; when the protruding portion is inserted into the unlocking groove, the first unlocking guide surface contacts the second unlocking guide surface, so as to drive the matching piece to disengage from the locking portion.

一种实施例中，所述钉仓组件还包括卡扣件，所述传动机构具有卡接部，所述卡扣件朝向所述传动机构的自由端能够靠近和远离所述安装位所在的一侧运动，以实现与所述卡接部的卡接和解除卡接。In one embodiment, the staple cartridge assembly further includes a clip, the transmission mechanism has a clip portion, and the free end of the clip towards the transmission mechanism can be close to and away from a position where the installation position is located. side movement to realize the clamping and releasing of the clamping part.

一种实施例中，所述卡扣件连接于所述切割刀。In one embodiment, the clip is connected to the cutting blade.

一种实施例中，所述卡扣件的至少部分为弹性结构，所述安装座具有卡接导向面，所述传动机构带动所述推钉件和切割刀沿所述卡接导向面向所述执行器组件的远端运动时，所述卡接导向面与所述卡扣件抵触，以使所述卡扣件发生形变，并带动所述卡扣件的自由端靠近安装座所在的一侧运动，以实现与所述卡接部卡接；所述传动机构带动所述推钉件和切割刀沿所述卡接导向面向所述执行器组件的近端运动时，所述卡扣件在弹性结构的弹性回复力作用下恢复形变，并带动所述卡扣件的自由端远离安装座所在的一侧运动，以实现与所述卡接部解除卡接。In an embodiment, at least a part of the clip is an elastic structure, the mounting seat has a clip guide surface, and the transmission mechanism drives the nail pusher and the cutting knife to face the clip guide along the clip guide. When the distal end of the actuator assembly moves, the clamping guide surface collides with the clamping piece, so that the clamping piece is deformed and drives the free end of the clamping piece to be close to the side where the mounting seat is located move to realize the clamping connection with the clamping part; when the driving mechanism drives the nail pusher and the cutting blade to move along the clamping guide facing the proximal end of the actuator assembly, the clamping part is Under the action of the elastic restoring force of the elastic structure, the elastic structure recovers the deformation, and drives the free end of the clip to move away from the side where the mounting seat is located, so as to release the clip from the clip part.

依据上述实施例的外科手术器械、吻合器和钉仓组件。一方面，由于利用执行器组件上的解锁部实现对传动机构的锁定，利用传动机构上的第一解锁部和钉仓组件上的第二解锁部实现对传动机构的解锁，仅在现有零件上增加特征即可实现保险功能，而无需增加结构复杂的保险卡件和弹簧驱动结构，从而有利于提升保险功能可靠性，且避免了保险卡件失效后掉落到人体内的风险。另一方面，由于切割刀设置在钉仓组件的安装座上，每次更换钉仓组件时，同步实现了对切割刀的更换，从而有利于避免切割刀锋利度下降带来的医疗风险。Surgical instrument, stapler, and cartridge assembly in accordance with the above-described embodiments. On the one hand, because the unlocking part on the actuator assembly is used to realize the locking of the transmission mechanism, the first unlocking part on the transmission mechanism and the second unlocking part on the staple cartridge assembly are used to realize the unlocking of the transmission mechanism. The insurance function can be realized by adding features on the above, without adding a complex insurance card and a spring drive structure, which is beneficial to improve the reliability of the insurance function and avoid the risk of the insurance card falling into the human body after failure. On the other hand, since the cutting blade is arranged on the mounting seat of the staple cartridge assembly, the cutting blade is replaced synchronously every time the staple cartridge assembly is replaced, thereby helping to avoid medical risks caused by the decrease in the sharpness of the cutting blade.

附图说明Description of drawings

图1为本申请一种实施例中外科手术器械的结构示意图；1 is a schematic structural diagram of a surgical instrument in an embodiment of the application;

图2为本申请一种实施例中钉仓组件的剖视示意图；2 is a schematic cross-sectional view of a staple cartridge assembly in an embodiment of the present application;

图3为本申请一种实施例中钉仓组件立体视角的示意图；3 is a schematic diagram of a three-dimensional perspective of a staple cartridge assembly in an embodiment of the present application;

图4为本申请一种实施例中执行器组件和驱动机构的结构示意图；4 is a schematic structural diagram of an actuator assembly and a driving mechanism in an embodiment of the application;

图5为本申请一种实施例中传动机构与切割刀准备配合解锁的结构示意图；FIG. 5 is a schematic structural diagram of the transmission mechanism and the cutting knife preparing to cooperate and unlock in an embodiment of the application;

图6为本申请图5中A处的放大图；Fig. 6 is the enlarged view of place A in Fig. 5 of this application;

图7为本申请一种实施例中传动机构与切割刀配合解锁后装备击发的结构示意图；7 is a schematic structural diagram of the equipment firing after the transmission mechanism and the cutting knife cooperate and unlock in an embodiment of the application;

图8为本申请图7中B处的放大图；Fig. 8 is an enlarged view of the place B in Fig. 7 of the application;

图9为本申请一种实施例中传动机构和切割刀回退后准备分离的结构示意图；9 is a schematic structural diagram of the transmission mechanism and the cutting blade ready to be separated after retreating in an embodiment of the application;

图10为本申请图9中C处的放大图；Fig. 10 is an enlarged view of the place C in Fig. 9 of the application;

图11为本申请一种实施例中传动机构与锁定部锁定的结构示意图；FIG. 11 is a schematic structural diagram of locking the transmission mechanism and the locking portion in an embodiment of the application;

图12为本申请图11中D处的放大图；Fig. 12 is an enlarged view of the place D in Fig. 11 of the application;

图13为本申请一种实施例中传动机构与切割刀分离后继续向近端运动的结构示意图；13 is a schematic structural diagram of the transmission mechanism and the cutting knife continuing to move toward the proximal end after being separated in an embodiment of the application;

图14为本申请图13中E处的放大图；FIG. 14 is an enlarged view of the place E in FIG. 13 of the application;

附图标记：100、手柄组件；110、固定手柄；120、活动手柄；200、枪管组件；210、传动机构；211、第一解锁部；2111、凸出部；2112第一解锁导向面；212、配合槽；213、配合件；214、驱动件；215、凸起结构；216、卡接部；300、执行器组件；310、第一钳口；320、第二钳口；330、锁定部；340、锁定弹片；400、钉仓组件；410、安装座；411、卡接导向面；412、组织结合面；420、推钉件；430、切割刀；440、第二解锁部；441、解锁槽；442、第二解锁导向面；450、卡扣件。Reference numerals: 100, handle assembly; 110, fixed handle; 120, movable handle; 200, barrel assembly; 210, transmission mechanism; 211, first unlocking part; 2111, protruding part; 2112, first unlocking guide surface; 212, matching groove; 213, matching piece; 214, driving piece; 215, protruding structure; 216, clamping part; 300, actuator assembly; 310, first jaw; 320, second jaw; 330, locking part; 340, locking shrapnel; 400, staple cartridge assembly; 410, mounting seat; 411, clamping guide surface; 412, tissue joint surface; 420, nail pusher; 430, cutting knife; 440, second unlocking part; 441 , Unlocking slot; 442, Second unlocking guide surface; 450, Buckle.

具体实施方式Detailed ways

下面通过具体实施方式结合附图对本发明作进一步详细说明。其中不同实施方式中类似元件采用了相关联的类似的元件标号。在以下的实施方式中，很多细节描述是为了使得本申请能被更好的理解。然而，本领域技术人员可以毫不费力的认识到，其中部分特征在不同情况下是可以省略的，或者可以由其他元件、材料、方法所替代。在某些情况下，本申请相关的一些操作并没有在说明书中显示或者描述，这是为了避免本申请的核心部分被过多的描述所淹没，而对于本领域技术人员而言，详细描述这些相关操作并不是必要的，他们根据说明书中的描述以及本领域的一般技术知识即可完整了解相关操作。The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments have used associated similar element numbers. In the following embodiments, many details are described so that the present application can be better understood. However, those skilled in the art will readily recognize that some of the features may be omitted under different circumstances, or may be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application from being overwhelmed by excessive description, and for those skilled in the art, these are described in detail. The relevant operations are not necessary, and they can fully understand the relevant operations according to the descriptions in the specification and general technical knowledge in the field.

另外，说明书中所描述的特点、操作或者特征可以以任意适当的方式结合形成各种实施方式。同时，方法描述中的各步骤或者动作也可以按照本领域技术人员所能显而易见的方式进行顺序调换或调整。因此，说明书和附图中的各种顺序只是为了清楚描述某一个实施例，并不意味着是必须的顺序，除非另有说明其中某个顺序是必须遵循的。Additionally, the features, acts, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can also be exchanged or adjusted in order in a manner obvious to those skilled in the art. Therefore, the various sequences in the specification and drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a necessary order unless otherwise stated, a certain order must be followed.

本文中为部件所编序号本身，例如“第一”、“第二”等，仅用于区分所描述的对象，不具有任何顺序或技术含义。而本申请所说“连接”、“联接”，如无特别说明，均包括直接和间接连接(联接)。The serial numbers themselves, such as "first", "second", etc., for the components herein are only used to distinguish the described objects, and do not have any order or technical meaning. The "connection" and "connection" mentioned in this application, unless otherwise specified, include both direct and indirect connections (connections).

吻合器是微创手术中常用的手术器械，请参考图1，吻合器通常包括手柄组件100、枪管组件200和执行器组件300，枪管组件200包括闭合传动链和击发传动链，手柄组件100包括固定手柄110和至少一个活动手柄120。The stapler is a commonly used surgical instrument in minimally invasive surgery. Please refer to FIG. 1. The stapler usually includes ahandle assembly 100, abarrel assembly 200 and anactuator assembly 300. Thebarrel assembly 200 includes a closing drive chain and a firing drive chain, and a handle assembly. 100 includes a fixedhandle 110 and at least onemovable handle 120 .

在操作吻合器时，操作人员可以握持固定手柄110，通过细长的枪管组件200将执行器组件300伸入人体内的病灶部位。再通过活动手柄120触发闭合传动链，以使执行器组件300的钳口闭合，并夹持在病灶部位附近的特定位置。接着通过活动手柄120触发击发传动链，以使执行器组件300内的切割刀430对组织进行切除，并在切除的同时通过执行器组件300内的缝合钉进行组织缝合。When operating the stapler, the operator can hold the fixedhandle 110 and extend theactuator assembly 300 into the lesion site in the human body through theelongated barrel assembly 200 . Then, the closing transmission chain is triggered by themovable handle 120, so that the jaws of theactuator assembly 300 are closed and clamped at a specific position near the lesion site. The firing drive chain is then triggered by themovable handle 120, so that thecutter 430 in theactuator assembly 300 cuts the tissue, and the tissue is sutured by the staples in theactuator assembly 300 while cutting.

本实施例的中的“远端”指的是操作外科手术器械时远离操作者的一端，“近端”指的是操作外科手术器械时靠近操作者的一端。本实施例中的“轴向”指的是远端的中心与近端的中心连线的方向，“径向”指的是垂直于轴向的方向。In this embodiment, the "distal end" refers to the end away from the operator when the surgical instrument is operated, and the "proximal end" refers to the end close to the operator when the surgical instrument is operated. In this embodiment, "axial" refers to the direction of the line connecting the center of the distal end and the center of the proximal end, and "radial" refers to the direction perpendicular to the axial direction.

本实施例提供一种外科手术器械。This embodiment provides a surgical instrument.

请参考图1-14，该外科手术器械包括手柄组件100、枪管组件200、钉仓组件400和执行器组件300。Referring to FIGS. 1-14 , the surgical instrument includes ahandle assembly 100 , abarrel assembly 200 , acartridge assembly 400 and anactuator assembly 300 .

枪管组件200的近端与手柄组件100连接，枪管组件200包括传动机构210。钉仓组件400包括安装座410、推钉件420和切割刀430，安装座410具有多个用于安装缝合钉的安装位，推钉件420活动设置在安装座410上，切割刀430与安装座410活动连接，推钉件420和切割刀430能够从安装座410的近端向远端运动。枪管组件200的远端与执行器组件300连接，执行器组件300包括第一钳口310和第二钳口320，第一钳口310与第二钳口320活动连接，第一钳口310和第二钳口320能够相对运动以实现闭合和打开。第一钳口310和第二钳口320之间形成安装腔体，钉仓组件400设置于安装腔体内，传动机构210延伸到安装腔体内。The proximal end of thebarrel assembly 200 is connected to thehandle assembly 100 , and thebarrel assembly 200 includes atransmission mechanism 210 . Thestaple cartridge assembly 400 includes a mountingseat 410, astaple pushing member 420 and a cuttingknife 430. The mountingseat 410 has a plurality of mounting positions for installing staples, thestaple pushing member 420 is movably arranged on the mountingseat 410, and the cuttingknife 430 is connected to the mountingseat 430. Thebase 410 is movably connected, and thenail pusher 420 and thecutting blade 430 can move from the proximal end of the mountingbase 410 to the distal end. The distal end of thebarrel assembly 200 is connected with theactuator assembly 300, theactuator assembly 300 includes afirst jaw 310 and asecond jaw 320, thefirst jaw 310 is movably connected with thesecond jaw 320, and thefirst jaw 310 and thesecond jaw 320 can move relative to each other to achieve closing and opening. An installation cavity is formed between thefirst jaw 310 and thesecond jaw 320, thestaple cartridge assembly 400 is disposed in the installation cavity, and thetransmission mechanism 210 extends into the installation cavity.

执行器组件300具有锁定部330，锁定部330用于与传动机构210锁定，以阻止传动机构210沿执行器组件300的轴向运动。传动机构210具有第一解锁部211，钉仓组件400具有第二解锁部440，钉仓组件400安装在安装腔体内时，第一解锁部211与第二解锁部440配合，以使锁定部330与传动机构210解锁。锁定部330与传动机构210解锁时，传动机构210能够驱动推钉件420和切割刀430从安装座410的近端向远端运动。Theactuator assembly 300 has a lockingportion 330 for locking with thetransmission mechanism 210 to prevent thetransmission mechanism 210 from moving in the axial direction of theactuator assembly 300 . Thetransmission mechanism 210 has a first unlockingportion 211, and thestaple cartridge assembly 400 has a second unlockingportion 440. When thestaple cartridge assembly 400 is installed in the installation cavity, the first unlockingportion 211 cooperates with the second unlockingportion 440, so that the lockingportion 330 Unlock withtransmission 210. When the lockingportion 330 and thetransmission mechanism 210 are unlocked, thetransmission mechanism 210 can drive thenail pusher 420 and the cuttingknife 430 to move from the proximal end of the mountingseat 410 to the distal end.

一方面，由于利用执行器组件300上的锁定部330实现对传动机构210的锁定，利用传动机构210上的第一解锁部211和钉仓组件400上的第二解锁部440实现对传动机构210的解锁，仅在现有零件上增加特征即可实现保险功能，而无需增加结构复杂的保险卡件和弹簧驱动结构，从而有利于提升保险功能可靠性，且避免了保险卡件失效后掉落到人体内的风险。另一方面，由于切割刀430设置在钉仓组件400的安装座410上，每次更换钉仓组件400时，同步实现了对切割刀430的更换，从而有利于避免切割刀430锋利度下降带来的医疗风险。On the one hand, since the lockingpart 330 on theactuator assembly 300 is used to lock thetransmission mechanism 210 , the first unlockingpart 211 on thetransmission mechanism 210 and the second unlockingpart 440 on thestaple cartridge assembly 400 are used to realize the locking of thetransmission mechanism 210 . Unlocking, the insurance function can be realized only by adding features to the existing parts, without adding a complex insurance card and spring drive structure, which is beneficial to improve the reliability of the insurance function and avoid the insurance card falling after failure. risk to the human body. On the other hand, since thecutting blade 430 is disposed on the mountingseat 410 of thestaple cartridge assembly 400, thecutting blade 430 is replaced synchronously every time thestaple cartridge assembly 400 is replaced, which is beneficial to avoid the sharpness of thecutting blade 430 from decreasing. medical risks.

请参考图4-12，在实际的应用场景中，将钉仓组件400安装到安装腔体内后，传动机构210上的第一解锁部211与切割刀430上的第二解锁部440有一定的距离。请参考图6和8，操作者进行击发操作后，传动机构210向远端运动，使第一解锁部211与第二解锁部440配合，卡扣件450与卡接部216卡接，传动机构210推动切割刀430和推钉件420向远端运动完成击发。击发完成后，传动机构210带动切割刀430向近端运动，到达图10位置时，卡扣件450在自身弹性力作用下与卡接部216分离，传动机构210与切割刀430分离，且传动机构210继续运动至图14中的位置。如图12所示，当安装腔体内未设置钉仓组件400，或钉仓组件400的切割刀430未处于其初始位置时，操作者若再次进行击发操作，传动机构210向远端运动，由于此时第一解锁部211与第二解锁部440未配合，在锁定弹片340的弹性力作用下，传动机构210与锁定部330抵触，保险生效。4-12, in an actual application scenario, after thestaple cartridge assembly 400 is installed in the installation cavity, the first unlockingportion 211 on thetransmission mechanism 210 and the second unlockingportion 440 on the cuttingknife 430 have a certain relationship distance. Referring to FIGS. 6 and 8 , after the operator performs the firing operation, thetransmission mechanism 210 moves to the distal end, so that the first unlockingportion 211 cooperates with the second unlockingportion 440 , theclip 450 is engaged with the engagingportion 216 , and thetransmission mechanism 210 pushes the cuttingknife 430 and thepusher 420 to the distal end to complete the firing. After the firing is completed, thetransmission mechanism 210 drives the cuttingknife 430 to move toward the proximal end, and when it reaches the position shown in FIG. 10 , theclip 450 is separated from the clampingpart 216 under the action of its own elastic force, thetransmission mechanism 210 is separated from the cuttingknife 430 , and the transmission Themechanism 210 continues to move to the position in FIG. 14 . As shown in FIG. 12 , when thestaple cartridge assembly 400 is not installed in the installation cavity, or thecutter 430 of thestaple cartridge assembly 400 is not in its initial position, if the operator performs the firing operation again, thetransmission mechanism 210 moves to the distal end, because At this time, the first unlockingportion 211 does not cooperate with the second unlockingportion 440 , and under the elastic force of thelocking spring 340 , thetransmission mechanism 210 collides with the lockingportion 330 , and the insurance takes effect.

需要说明的是，钉仓组件400可以视为执行器组件300的一部分，例如，钉仓组件400可以与第一钳口310或第二钳口320固定连接或形成一体式结构。钉仓组件400也可以视为独立于执行器组件300的部件，例如，钉仓组件400可拆卸地安装于第一钳口310或第二钳口320，从而使钉仓组件400可以视为应用于执行器组件300的耗材。It should be noted that thestaple cartridge assembly 400 can be regarded as a part of theactuator assembly 300 , for example, thestaple cartridge assembly 400 can be fixedly connected with thefirst jaw 310 or thesecond jaw 320 or form an integral structure. Thestaple cartridge assembly 400 can also be considered a separate component from theactuator assembly 300, eg, thestaple cartridge assembly 400 is removably mounted to thefirst jaw 310 or thesecond jaw 320, so that thestaple cartridge assembly 400 can be considered an application Consumables for theactuator assembly 300.

请参考图4-12，可以理解的是，当钉仓组件400视为应用于执行器组件300的耗材时，本实施例提供一种吻合器，该吻合器包括手柄组件100、枪管组件200和执行器组件300。Referring to FIGS. 4-12 , it can be understood that when thestaple cartridge assembly 400 is regarded as a consumable applied to theactuator assembly 300 , the present embodiment provides a stapler, which includes ahandle assembly 100 and abarrel assembly 200 andactuator assembly 300.

枪管组件200的近端与手柄组件100连接，枪管组件200包括传动机构210。枪管组件200的远端与执行器组件300连接，执行器组件300包括第一钳口310和第二钳口320，第一钳口310与第二钳口320活动连接，第一钳口310和第二钳口320能够相对运动以实现闭合和打开。The proximal end of thebarrel assembly 200 is connected to thehandle assembly 100 , and thebarrel assembly 200 includes atransmission mechanism 210 . The distal end of thebarrel assembly 200 is connected with theactuator assembly 300, theactuator assembly 300 includes afirst jaw 310 and asecond jaw 320, thefirst jaw 310 is movably connected with thesecond jaw 320, and thefirst jaw 310 and thesecond jaw 320 can move relative to each other to achieve closing and opening.

第一钳口310和第二钳口320之间形成用于安装钉仓组件400的安装腔体。传动机构210延伸到安装腔体内。执行器组件300具有锁定部330，锁定部330用于与传动机构210锁定，以阻止传动机构210沿执行器组件300的轴向运动。传动机构210具有第一解锁部211，第一解锁部211用于与钉仓组件400的第二解锁部440配合，以使锁定部330与传动机构210解锁。锁定部330与传动机构210解锁时，传动机构210能够驱动钉仓组件400的推钉件420和切割刀430从安装座410的近端向远端运动。An installation cavity for installing thestaple cartridge assembly 400 is formed between thefirst jaw 310 and thesecond jaw 320 . Thetransmission mechanism 210 extends into the mounting cavity. Theactuator assembly 300 has a lockingportion 330 for locking with thetransmission mechanism 210 to prevent thetransmission mechanism 210 from moving in the axial direction of theactuator assembly 300 . Thetransmission mechanism 210 has a first unlockingportion 211 , and the first unlockingportion 211 is used to cooperate with the second unlockingportion 440 of thestaple cartridge assembly 400 to unlock the lockingportion 330 and thetransmission mechanism 210 . When the lockingportion 330 and thetransmission mechanism 210 are unlocked, thetransmission mechanism 210 can drive thestaple pusher 420 and the cuttingknife 430 of thestaple cartridge assembly 400 to move from the proximal end of the mountingseat 410 to the distal end.

请参考图1-3，本实施例还提供一种钉仓组件400，该钉仓组件400包括安装座410、推钉件420和切割刀430，钉仓组件400应用于上述的吻合器。1-3, the present embodiment further provides astaple cartridge assembly 400, thestaple cartridge assembly 400 includes a mountingseat 410, astaple pusher 420 and a cuttingknife 430, thestaple cartridge assembly 400 is applied to the above-mentioned stapler.

安装座410具有多个用于缝合钉的安装位。推钉件420活动设置在安装座410上。切割刀430与安装座410连接，推钉件420和切割刀430能够从安装座410的近端向远端运动。钉仓组件400具有第二解锁部440，第二解锁部440用于与吻合器的第一解锁部211配合，以使吻合器的传动机构210与吻合器的执行器组件300的锁定部330解锁。Mount 410 has multiple mounting locations for staples. Thenail pusher 420 is movably arranged on the mountingseat 410 . Thecutting blade 430 is connected with the mountingseat 410 , and thenail pusher 420 and thecutting blade 430 can move from the proximal end of the mountingseat 410 to the distal end. Thestaple cartridge assembly 400 has a second unlockingportion 440, and the second unlockingportion 440 is used to cooperate with the first unlockingportion 211 of the stapler to unlock thetransmission mechanism 210 of the stapler and the lockingportion 330 of theactuator assembly 300 of the stapler .

请参考图4-12，在一种实施例中，锁定部330与传动机构210的远端抵触，以实现与传动机构210的锁定。钉仓组件400正确安装在安装腔体内时，第一解锁部211与第二解锁部440接触，以带动传动机构210的远端脱离锁定部330，从而实现与传动机构210的解锁。Referring to FIGS. 4-12 , in one embodiment, the lockingportion 330 interferes with the distal end of thetransmission mechanism 210 to achieve locking with thetransmission mechanism 210 . When thestaple cartridge assembly 400 is correctly installed in the installation cavity, the first unlockingportion 211 contacts the second unlockingportion 440 to drive the distal end of thetransmission mechanism 210 to disengage from the lockingportion 330 , thereby unlocking thetransmission mechanism 210 .

通过锁定部330与传动机构210的远端抵触或脱离，实现锁定部330与传动机构210的锁定或解锁。采用这种锁定方式的好处在于，由于锁定方式较为简单和直接，有利于将锁定部330和传动机构210的结构设计得更简单，也无需额外增加结构复杂的零部件，从而增加了锁定和解锁过程的可靠性。当然，在其他实施例中，也可以通过阻尼锁定、电磁锁定或其他合适的锁定方式替换本实施例中的锁定方式。The locking or unlocking of the lockingportion 330 and thetransmission mechanism 210 is achieved by the lockingportion 330 being in contact with or disengaging from the distal end of thetransmission mechanism 210 . The advantage of using this locking method is that because the locking method is relatively simple and direct, it is beneficial to design the structures of the lockingportion 330 and thetransmission mechanism 210 to be simpler, and there is no need to add additional components with complex structures, thereby increasing the number of locking and unlocking. Process reliability. Of course, in other embodiments, the locking method in this embodiment can also be replaced by damping locking, electromagnetic locking or other suitable locking methods.

请参考图5-8，在一种实施例中，第一解锁部211配置为朝向钉仓组件400延伸的凸出部2111，第二解锁部440配置为解锁槽441，凸出部2111具有第一解锁导向面2112，解锁槽441具有第二解锁导向面442。凸出部2111嵌入解锁槽441时，第一解锁导向面2112与第二解锁导向面442接触，用以带动传动机构210脱离锁定部330。Referring to FIGS. 5-8 , in one embodiment, the first unlockingportion 211 is configured as a protrudingportion 2111 extending toward thecartridge assembly 400 , the second unlockingportion 440 is configured as an unlockingslot 441 , and the protrudingportion 2111 has a first An unlockingguide surface 2112 , and the unlockinggroove 441 has a second unlockingguide surface 442 . When the protrudingportion 2111 is inserted into the unlockingslot 441 , the first unlockingguide surface 2112 is in contact with the second unlockingguide surface 442 to drive thetransmission mechanism 210 to disengage from the lockingportion 330 .

当使用者将钉仓组件400安装到安装腔体内时，带动凸出部2111嵌入解锁槽441，并使第一解锁导向面2112与第二解锁导向面442接触，从而带动传动机构210脱离锁定部330。凸出部2111和解锁槽441的结构简单，且易于与钉仓组件400和传动机构210结合为一体式结构，从而有利于降低额外增加零件带来的组装复杂度和系统风险系数。在其他实施例中，也可以对凸出部2111和解锁槽441作简单的替换和变形，例如，可以更换凸出部2111和解锁槽441的位置，将凸出部2111设置在钉仓组件400上，将解锁槽441设置在传动机构210上。When the user installs thestaple cartridge assembly 400 into the installation cavity, the protrudingportion 2111 is driven into the unlockinggroove 441, and the first unlockingguide surface 2112 is brought into contact with the second unlockingguide surface 442, thereby driving thetransmission mechanism 210 to disengage the lockingportion 330. The protrudingportion 2111 and the unlockinggroove 441 have simple structures, and are easily combined with thestaple cartridge assembly 400 and thetransmission mechanism 210 as an integral structure, which is beneficial to reduce the assembly complexity and system risk factor caused by additional parts. In other embodiments, the protrudingpart 2111 and the unlockinggroove 441 can also be simply replaced and deformed. For example, the positions of theprotruding part 2111 and the unlockinggroove 441 can be replaced, and theprotruding part 2111 can be arranged on thestaple cartridge assembly 400 , the unlockingslot 441 is provided on thetransmission mechanism 210 .

请参考图5-8，在一种实施例中，第二解锁部440位于切割刀430朝向传动机构210的一侧。Referring to FIGS. 5-8 , in one embodiment, the second unlockingportion 440 is located on the side of thecutting blade 430 facing thetransmission mechanism 210 .

当使用者将钉仓组件400安装到安装腔体内时，切割刀430上的第二解锁部440与传动机构210上的第一解锁部211配合以实现解锁。第二解锁部440设置在切割刀430上的好处在于，当第二解锁部440与第一解锁部211配合时，既实现了解锁功能，又使传动机构210与切割刀430直接结合，使得传动机构210驱动切割刀430从安装座410的近端向安装座410的远端运动时，传动机构210的作用力直接作用于切割刀430，减少作用力在传动过程中的损耗，也有利于提升切割刀430运动的稳定性。When the user installs thestaple cartridge assembly 400 into the installation cavity, the second unlockingpart 440 on thecutting blade 430 cooperates with the first unlockingpart 211 on thetransmission mechanism 210 to realize unlocking. The advantage of disposing the second unlockingportion 440 on the cuttingknife 430 is that when the second unlockingportion 440 cooperates with the first unlockingportion 211 , the unlocking function is realized, and thetransmission mechanism 210 is directly combined with the cuttingknife 430 , so that the transmission When themechanism 210 drives the cuttingknife 430 to move from the proximal end of the mountingseat 410 to the distal end of the mountingseat 410, the force of thetransmission mechanism 210 directly acts on the cuttingknife 430, which reduces the loss of the force during the transmission process, and is also conducive to lifting Stability of the movement of thecutter 430.

在其他实施例中，第二解锁部440也可以设置在钉仓组件400的其他位置，例如，在一种实施例中，第二解锁部440也可以位于推钉件420朝向传动机构210的一侧。在另一种实施例中，第二解锁件还可以位于安装座410朝向传动机构210的一侧。In other embodiments, the second unlockingportion 440 may also be disposed at other positions of thestaple cartridge assembly 400 . For example, in one embodiment, the second unlockingportion 440 may also be located at a portion of thenail pushing member 420 facing thetransmission mechanism 210 . side. In another embodiment, the second unlocking member may also be located on the side of the mountingseat 410 facing thetransmission mechanism 210 .

请参考图9-12，在一种实施例中，传动机构210朝向钉仓组件400的一侧具有配合槽212，配合槽212用于与切割刀430配合。Referring to FIGS. 9-12 , in one embodiment, a side of thetransmission mechanism 210 facing thestaple cartridge assembly 400 has a matchinggroove 212 , and the matchinggroove 212 is used for matching with the cuttingknife 430 .

通过配合槽212与切割刀430的配合，有利于增加传动机构210推动切割刀430从安装座410的近端向远端运动时的稳定性，避免切割刀430在所切割组织的反作用力下晃动，从而有利于保证切割刀430切割组织时流畅度。The cooperation between the matchinggroove 212 and thecutting blade 430 is beneficial to increase the stability when thetransmission mechanism 210 pushes thecutting blade 430 to move from the proximal end to the distal end of the mountingseat 410, and avoids thecutting blade 430 from shaking under the reaction force of the tissue being cut. , so as to help ensure the smoothness of thecutting blade 430 when cutting tissue.

可以理解的是，上述方案锁定方案、第一解锁部211和第二解锁部440的具体结构方案以及第二解锁部440的位置布局方案可以结合使用。例如，请参考图5-8，在一种实施例中，切割刀430连接于推钉件420朝向传动机构210的一侧，第二解锁部440位于切割刀430朝向传动机构210的一侧。第一解锁部211配置为朝向钉仓组件400延伸的凸出部2111，第二解锁部440配置为解锁槽441，凸出部2111具有第一解锁导向面2112，解锁槽441具有第二解锁导向面442。凸出部2111嵌入解锁槽441时，第一解锁导向面2112与第二解锁导向面442接触，用以带动传动机构210脱离锁定部330。传动机构210朝向钉仓组件400的一侧具有配合槽212，配合槽212用于与切割刀430配合。It can be understood that, the above-mentioned scheme locking scheme, the specific structural scheme of the first unlockingportion 211 and the second unlockingportion 440, and the position layout scheme of the second unlockingportion 440 can be used in combination. For example, referring to FIGS. 5-8 , in one embodiment, thecutting blade 430 is connected to the side of thenail pushing member 420 facing thetransmission mechanism 210 , and the second unlockingportion 440 is located on the side of thecutting blade 430 facing thetransmission mechanism 210 . The first unlockingportion 211 is configured as a protrudingportion 2111 extending toward thestaple cartridge assembly 400 , the second unlockingportion 440 is configured as an unlockingslot 441 , the protrudingportion 2111 has a first unlockingguide surface 2112 , and the unlockingslot 441 has a second unlockingguide face 442. When the protrudingportion 2111 is inserted into the unlockingslot 441 , the first unlockingguide surface 2112 is in contact with the second unlockingguide surface 442 to drive thetransmission mechanism 210 to disengage from the lockingportion 330 . A side of thetransmission mechanism 210 facing thestaple cartridge assembly 400 has a matchinggroove 212 , and the matchinggroove 212 is used for matching with the cuttingknife 430 .

请参考图11-14，在一种实施例中，锁定部330沿垂直于执行器组件300的远端和近端连线的方向延伸。Referring to FIGS. 11-14 , in one embodiment, the lockingportion 330 extends in a direction perpendicular to the line connecting the distal end and the proximal end of theactuator assembly 300 .

使得传动机构210沿垂直于执行器组件300的远端和近端连线的方向运动，就能实现与锁定部330的抵触和脱离。由于传动机构210锁定和解锁的运动方向垂直于传动机构210击发切割刀430运动的方向，使得传动机构210的锁定和解锁动作不会干涉传动机构210的击发动作。By making thetransmission mechanism 210 move in a direction perpendicular to the connecting line between the distal end and the proximal end of theactuator assembly 300 , the interference and disengagement from the lockingportion 330 can be achieved. Since the movement direction of thetransmission mechanism 210 for locking and unlocking is perpendicular to the direction in which thetransmission mechanism 210 triggers the movement of the cuttingknife 430 , the locking and unlocking actions of thetransmission mechanism 210 will not interfere with the firing action of thetransmission mechanism 210 .

请参考图5-8，在一种实施例中，执行器组件300还包括锁定弹片340，锁定弹片340位于传动机构210的运动路径上，锁定弹片340的弹性回复力用于驱动传动机构210运动至与锁定部330锁定。Referring to FIGS. 5-8 , in one embodiment, theactuator assembly 300 further includes alocking spring piece 340 , the lockingspring piece 340 is located on the movement path of thetransmission mechanism 210 , and the elastic restoring force of the lockingspring piece 340 is used to drive thetransmission mechanism 210 to move. until locked with the lockingportion 330 .

当向执行器组件300的近端运动至锁定部330所在的位置时，可以通过锁定弹片340的弹性回复力驱动传动机构210运动至与锁定部330锁定。具体地，本实施例中，锁定弹片340的弹性回复力可以设置成垂直于执行器组件300的远端和近端连线的方向。在其他实施例中，也可以采用弹簧、弹性块或其他合适的弹性件替换锁定弹片340。When moving toward the proximal end of theactuator assembly 300 to the position where the lockingportion 330 is located, thetransmission mechanism 210 can be driven to be locked with the lockingportion 330 by the elastic restoring force of the lockingspring piece 340 . Specifically, in this embodiment, the elastic restoring force of the lockingelastic piece 340 can be set to be perpendicular to the direction of the connecting line between the distal end and the proximal end of theactuator assembly 300 . In other embodiments, the lockingspring 340 can also be replaced by a spring, an elastic block or other suitable elastic members.

请参考图5-8，在一种实施例中，传动机构210包括配合件213和驱动件214，第一解锁部211位于配合件213朝向钉仓组件400的一侧，驱动件214与配合件213连接，驱动件214具有背离配合件213延伸的凸起结构215，锁定弹片340可与凸起结构215抵触。Referring to FIGS. 5-8 , in one embodiment, thetransmission mechanism 210 includes afitting member 213 and a drivingmember 214 , the first unlockingportion 211 is located on the side of thefitting member 213 facing thestaple cartridge assembly 400 , and the drivingmember 214 and thefitting member 213 is connected, the drivingmember 214 has a protrudingstructure 215 extending away from the matchingmember 213 , and the lockingelastic piece 340 can interfere with the protrudingstructure 215 .

配合件213用于与钉仓组件400或锁定部330配合，通过驱动件214推动配合件213从执行器组件300的近端向远端运动。锁定弹片340的弹性回复力作用于凸起结构215，以带动驱动件214运动，进而通过驱动件214带动配合件213与锁定部330抵触。具体地，本实施例中，锁定弹片340的弹性回复力可以设置成垂直于执行器组件300的远端和近端连线的方向。The fitting 213 is used to cooperate with thestaple cartridge assembly 400 or the lockingpart 330 , and the drivingmember 214 pushes the fitting 213 to move from the proximal end of theactuator assembly 300 to the distal end. The elastic restoring force of the lockingspring piece 340 acts on the protrudingstructure 215 to drive the drivingmember 214 to move, and then the drivingmember 214 drives thefitting member 213 to collide with the lockingportion 330 . Specifically, in this embodiment, the elastic restoring force of the lockingelastic piece 340 can be set to be perpendicular to the direction of the connecting line between the distal end and the proximal end of theactuator assembly 300 .

请参考图5-8，在一种实施例中，钉仓组件400还包括卡扣件450，传动机构210具有卡接部216，卡扣件450具有连接端和自由端，卡扣件450朝向传动机构210的自由端能够靠近和远离安装座410上的组织结合面412所在的平面运动，以实现与卡接部216的卡接和解除卡接。Referring to FIGS. 5-8 , in one embodiment, thestaple cartridge assembly 400 further includes aclip 450 , thetransmission mechanism 210 has aclip portion 216 , theclip 450 has a connecting end and a free end, and theclip 450 faces The free end of thetransmission mechanism 210 can move close to and away from the plane where thetissue engaging surface 412 on the mountingbase 410 is located, so as to realize the engagement and release of the engagement with theengagement portion 216 .

可以通过将卡扣件450向靠近安装座410上的组织结合面412所在的平面运动，以实现与卡接部216的卡接，进而实现钉仓组件400与传动机构210的卡接配合。通过将卡扣件450向远离安装座410上的组织结合面412所在的平面运动，以实现与卡接部216的解除卡接，进而实现钉仓组件400与传动机构210的解除卡接，从而有利于提升钉仓组件400与传动机构210之间结合和分离的可靠性。Theclip 450 can be moved toward the plane close to the tissuejoint surface 412 on the mountingbase 410 to achieve clip connection with theclip portion 216 , thereby achieving clip joint cooperation between thestaple cartridge assembly 400 and thetransmission mechanism 210 . By moving theclip 450 away from the plane where the tissuejoint surface 412 on the mountingbase 410 is located, the clipping connection with the clippingportion 216 is released, and thestaple cartridge assembly 400 and thetransmission mechanism 210 are released from clipping, thereby It is beneficial to improve the reliability of the combination and separation between thestaple cartridge assembly 400 and thetransmission mechanism 210 .

需要说明的是，安装座410的组织结合面412指的是，在夹持组织时安装座410上与被夹持的组织接触的一面。可以理解的是，在进行组织缝合时，缝合钉从安装座410的组织结合面412被推出，以实现对组织的缝合。It should be noted that thetissue engaging surface 412 of the mountingseat 410 refers to the surface of the mountingseat 410 that is in contact with the clamped tissue when the tissue is clamped. It can be understood that when performing tissue suturing, the staples are pushed out from thetissue engaging surface 412 of the mountingseat 410 to achieve suturing of the tissue.

请参考图5-8，在一种实施例中，卡扣件450的连接端连接于切割刀430。Referring to FIGS. 5-8 , in one embodiment, the connecting end of theclip 450 is connected to thecutting blade 430 .

由于卡扣件450的连接端连接于切割刀430，当卡扣件450与卡接部216卡接时，可以将切割刀430与传动机构210紧密配合，使得传动机构210可以更稳定地带动切割刀430运动，进而有利于提升切割刀430的切割动作的可靠性。当卡扣件450与卡接部216解除卡接时，传动机构210可以与切割刀430分离，以完成切割刀430的退刀动作。在其他实施例中，卡扣件450的连接端也可以连接于推钉件420。Since the connecting end of theclip 450 is connected to thecutting blade 430, when theclip 450 is clipped with theclip portion 216, thecutting blade 430 can be closely matched with thetransmission mechanism 210, so that thetransmission mechanism 210 can drive the cutting more stably The movement of theknife 430 is beneficial to improve the reliability of the cutting action of the cuttingknife 430 . When the latchingmember 450 is released from the latchingportion 216 , thetransmission mechanism 210 can be separated from thecutting blade 430 to complete the retracting action of thecutting blade 430 . In other embodiments, the connecting end of theclip 450 may also be connected to thenail pusher 420 .

请参考图5-8，在一种实施例中，卡扣件450的至少部分为弹性结构，安装座410具有卡接导向面411，传动机构210带动推钉件420和切割刀430沿卡接导向面411向执行器组件300的远端运动时，卡接导向面411与卡扣件450抵触，以使卡扣件450发生形变，并带动卡扣件450的自由端靠近安装座410上的组织结合面412所在的平面运动，以实现与卡接部216卡接。传动机构210带动推钉件420和切割刀430沿卡接导向面411向执行器组件300的近端运动时，卡扣件450在弹性结构的弹性回复力作用下带动卡扣件450的自由端远离安装座410上的组织结合面412运动，以实现与卡接部216解除卡接。Referring to FIGS. 5-8 , in an embodiment, at least part of theclip 450 is an elastic structure, the mountingseat 410 has aclip guide surface 411 , and thetransmission mechanism 210 drives thepusher 420 and the cuttingknife 430 along the clip When theguide surface 411 moves to the distal end of theactuator assembly 300 , the clampingguide surface 411 is in contact with thebuckle piece 450 , so that thebuckle piece 450 is deformed and the free end of thebuckle piece 450 is brought close to the mountingbase 410 . The plane where the tissuejoint surface 412 is located moves to realize the snap-fit with the snap-onportion 216 . When thedriving mechanism 210 drives thepusher 420 and thecutting blade 430 to move toward the proximal end of theactuator assembly 300 along the clampingguide surface 411 , the clampingmember 450 drives the free end of the clampingmember 450 under the action of the elastic restoring force of the elastic structure. Move away from thetissue engaging surface 412 on the mountingbase 410 to achieve release from the engagingportion 216 .

使得操作者无需做额外的操作，仅通过传动机构210带动推钉件420和切割刀430向执行器组件300的远端和近端运动，就能自动实现卡扣件450与卡接部216的卡接和解除卡接，从而有利于简化操作者的操作。具体地，卡扣件450可以整体为弹性材质。The operator does not need to perform additional operations, and only drives thenail pusher 420 and the cuttingknife 430 to move toward the distal end and the proximal end of theactuator assembly 300 through thetransmission mechanism 210 , so that the engagement between thesnap element 450 and the engagingportion 216 can be automatically realized. The clamping and releasing of the clamping are beneficial to simplify the operation of the operator. Specifically, thefastener 450 may be made of elastic material as a whole.

在其他实施例中，卡扣件450也可以为刚性结构。例如，卡扣件450为刚性杆件，卡扣件450的连接端与切割刀430转动连接，卡接导向面411与卡扣件450抵触时，带动卡扣件450的自由端靠近安装座410上的组织结合面412所在的平面转动，以实现与卡接部216的卡接。可以在卡扣件450与切割刀430转动连接的一端设置扭簧，通过扭簧驱动卡扣件450的自由端远离安装座410上的组织结合面412所在的平面转动，以实现与卡接部216的解除卡接。In other embodiments, theclip 450 may also be a rigid structure. For example, theclip 450 is a rigid rod, and the connecting end of theclip 450 is rotatably connected to the cuttingknife 430 . When theclip guide surface 411 is in contact with theclip 450 , the free end of theclip 450 is driven to approach the mountingseat 410 . The plane where the tissuejoint surface 412 on the upper part is rotated is rotated to realize the clamping with the clampingpart 216 . A torsion spring can be provided at one end of theclip 450 that is rotatably connected to the cuttingknife 430, and the free end of theclip 450 is driven by the torsion spring to rotate away from the plane where the tissuejoint surface 412 on the mountingseat 410 is located, so as to realize the connection with the clip. 216 to release the card connection.

以上应用了具体个例对本发明进行阐述，只是用于帮助理解本发明，并不用以限制本发明。对于本发明所属技术领域的技术人员，依据本发明的思想，还可以做出若干简单推演、变形或替换。The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention, and are not intended to limit the present invention. For those skilled in the art to which the present invention pertains, according to the idea of the present invention, several simple deductions, modifications or substitutions can also be made.

Claims (30)

1. A surgical instrument, comprising:

a handle assembly;

a barrel assembly having a proximal end connected to the handle assembly, the barrel assembly including a drive mechanism;

the nail bin assembly comprises a mounting seat, a nail pushing piece and a cutting knife, the mounting seat is provided with a plurality of mounting positions for mounting suturing nails, the nail pushing piece is movably arranged on the mounting seat, the cutting knife is movably connected with the mounting seat, and the nail pushing piece and the cutting knife can move from the near end to the far end of the mounting seat; and

the distal end of the barrel assembly is connected with the actuator assembly, the actuator assembly comprises a first jaw and a second jaw, the first jaw and the second jaw are movably connected, and the first jaw and the second jaw can move relatively to realize closing and opening; an installation cavity is formed between the first jaw and the second jaw, the nail bin assembly is arranged in the installation cavity, and the transmission mechanism extends into the installation cavity;

the actuator assembly has a lock for locking with the transmission to prevent axial movement of the transmission along the actuator assembly; the transmission mechanism is provided with a first unlocking part, the nail bin assembly is provided with a second unlocking part, and when the nail bin assembly is installed in the installation cavity, the first unlocking part is matched with the second unlocking part so that the locking part is unlocked from the transmission mechanism; when the locking part and the transmission mechanism are unlocked, the transmission mechanism can drive the nail pushing piece and the cutting knife to move from the near end to the far end of the mounting seat.

2. The surgical instrument of claim 1, wherein the locking portion interferes with a distal end of the transmission mechanism to effect locking with the transmission mechanism; when the nail bin assembly is correctly installed in the installation cavity, the first unlocking part is in contact with the second unlocking part to drive the far end of the transmission mechanism to be separated from the locking part, so that unlocking of the transmission mechanism is achieved.

3. The surgical instrument of claim 1, wherein the first unlocking portion is configured as a projection extending toward the cartridge assembly and the second unlocking portion is configured as an unlocking slot, the projection having a first unlocking guide surface and the unlocking slot having a second unlocking guide surface; when the protruding part is embedded into the unlocking groove, the first unlocking guide surface is contacted with the second unlocking guide surface to drive the transmission mechanism to be separated from the locking part.

4. The surgical instrument of claim 1, wherein the second unlocking point is located on a side of the cutting burr facing the transmission mechanism.

5. The surgical instrument of claim 1, wherein the second unlocking location is located on a side of the staple pusher facing the drive mechanism.

6. The surgical instrument of claim 1, wherein the second unlocking member is located on a side of the mounting block facing the transmission mechanism.

7. The surgical instrument of claim 1, wherein a side of the transmission mechanism facing the cartridge assembly has a mating groove for mating with the cutting blade.

8. The surgical instrument of claim 1, wherein the cutting blade is coupled to a side of the staple pusher facing the drive mechanism, and the second unlocking point is located on a side of the cutting blade facing the drive mechanism; the first unlocking portion is configured as a protruding portion extending towards the cartridge assembly, the second unlocking portion is configured as an unlocking groove, the protruding portion has a first unlocking guide surface, and the unlocking groove has a second unlocking guide surface; when the protruding part is embedded into the unlocking groove, the first unlocking guide surface is contacted with the second unlocking guide surface to drive the transmission mechanism to be separated from the locking part; one side of the transmission mechanism facing the nail bin assembly is provided with a matching groove, and the matching groove is used for matching with the cutting knife.

9. The surgical instrument of claim 1, wherein the lock extends in the direction perpendicular to the line connecting the distal end and the proximal end of the effector assembly.

10. The surgical instrument of claim 1, wherein the actuator assembly further comprises a locking spring located in a path of movement of the transmission mechanism, wherein a resilient return force of the locking spring is used to drive the transmission mechanism to move into locking with the locking portion.

11. The surgical instrument of claim 10, wherein the transmission mechanism includes a mating element and a driving element, wherein the first unlocking portion is located on a side of the mating element facing the cartridge assembly, wherein the driving element is coupled to the mating element, wherein the driving element has a protruding structure extending away from the mating element, and wherein the locking spring can interfere with the protruding structure.

12. The surgical instrument of claim 1, wherein the cartridge assembly further comprises a catch, and wherein the transmission mechanism has a catch portion, the catch having a connecting end and a free end, the catch being movable toward the free end of the transmission mechanism toward and away from a plane of tissue engaging surfaces on the mounting block to engage and disengage the catch portion.

13. The surgical instrument of claim 12, wherein the connecting end of the clasp is connected to the cutting blade.

14. The surgical instrument of claim 12, wherein at least a portion of the latch member is of a resilient construction, the mounting base has a latch guide surface, and the drive mechanism drives the staple pusher and the cutting blade along the latch guide surface toward the distal end of the actuator assembly such that the latch guide surface abuts the latch member to deform the latch member and drive the free end of the latch member toward a plane in which the tissue engaging surface of the mounting base is located to engage the latch portion; when the transmission mechanism drives the nail pushing piece and the cutting knife to move towards the near end of the actuator assembly along the clamping guide surface, the clamping piece drives the free end of the clamping piece to move away from the plane where the tissue junction surface on the mounting seat under the action of the elastic restoring force of the elastic structure, so that clamping with the clamping portion is released.

15. An stapler, comprising:

a handle assembly;

a barrel assembly having a proximal end connected to the handle assembly, the barrel assembly including a drive mechanism;

the distal end of the barrel assembly is connected with the actuator assembly, the actuator assembly comprises a first jaw and a second jaw, the first jaw and the second jaw are movably connected, and the first jaw and the second jaw can move relatively to realize closing and opening;

a mounting cavity for mounting the nail cartridge assembly is formed between the first jaw and the second jaw; the transmission mechanism extends into the mounting cavity; the actuator assembly has a lock for locking with the transmission to prevent axial movement of the transmission along the actuator assembly; the transmission mechanism is provided with a first unlocking part which is used for being matched with a second unlocking part of the nail bin assembly so as to unlock the locking part and the transmission mechanism; when the locking part is unlocked with the transmission mechanism, the transmission mechanism can drive the nail pushing piece and the cutting knife of the nail bin assembly to move from the near end to the far end of the mounting seat.

16. The stapler of claim 15, wherein the locking portion interferes with a distal end of the transmission mechanism to effect locking with the transmission mechanism; when the nail bin assembly is correctly installed in the installation cavity, the first unlocking part is used for being in contact with the second unlocking part so as to drive the far end of the transmission mechanism to be separated from the locking part, and therefore unlocking of the transmission mechanism is achieved.

17. The stapler of claim 15, wherein the first unlocking portion is configured as a projection extending toward the cartridge assembly, the second unlocking portion of the cartridge assembly is configured as an unlocking slot, the projection having a first unlocking guide surface, the unlocking slot having a second unlocking guide surface; when the protruding part is embedded into the unlocking groove, the first unlocking guide surface is contacted with the second unlocking guide surface to drive the transmission mechanism to be separated from the locking part.

18. The stapler of claim 15, wherein a side of the drive mechanism facing the cartridge assembly has a mating slot for mating with a cutting knife of the cartridge assembly.

19. The stapler of claim 15, wherein the lock extends radially of the distal end effector.

20. The stapler of claim 15, further comprising a locking spring located on a movement path of the driving mechanism and the driving member, wherein an elastic restoring force of the locking spring is used for driving the driving mechanism to move to be interfered with the locking portion.

21. The stapler of claim 20, wherein the transmission mechanism includes a mating element and a driving element, the first unlocking portion is located on a side of the mating element facing the cartridge assembly, the driving element is connected to the mating element, the driving element has a protruding structure extending away from the mating element, and the locking spring abuts against the protruding structure.

22. A staple cartridge assembly, comprising:

a mounting seat, wherein the mounting seat is provided with a plurality of mounting positions for mounting suturing nails;

the nail pushing piece is movably arranged on the mounting seat; and

the cutting knife is connected with the mounting seat, and the nail pushing piece and the cutting knife can move from the near end to the far end of the mounting seat; the staple cartridge assembly is provided with a second unlocking part which is used for being matched with the first unlocking part of the anastomat so as to unlock the transmission mechanism of the anastomat and the locking part of the actuator assembly of the anastomat.

23. The staple cartridge assembly of claim 22, wherein said second unlocking portion is configured to cooperate with the first unlocking portion of the drive mechanism to unlock the drive mechanism of the stapler from the locking portion of the stapler's actuator assembly.

24. The staple cartridge assembly of claim 22, wherein said second unlocking point is located on a side of said cutting knife facing said mating member.

25. The staple cartridge assembly of claim 22, wherein said second unlocking portion is located on a side of said staple pusher facing said engagement member.

26. The staple cartridge assembly of claim 22, wherein said second unlocking member is located on a side of said mounting base facing said mating member.

27. The staple cartridge assembly of claim 22, wherein said first unlocking portion is configured as a projection extending toward said staple cartridge assembly, said second unlocking portion is configured as an unlocking slot, said projection having a first unlocking guide surface, said unlocking slot having a second unlocking guide surface; when the protruding part is embedded into the unlocking groove, the first unlocking guide surface is contacted with the second unlocking guide surface to drive the matching piece to be separated from the locking part.

28. The staple cartridge assembly of claim 22, further comprising a latch, wherein said transmission mechanism has a latch portion, wherein said latch has a connecting end and a free end, and wherein said latch is movable toward and away from a plane of tissue engagement surfaces on said mounting base toward said free end of said transmission mechanism to engage and disengage said latch portion.

29. The staple cartridge assembly of claim 28, wherein said connecting end of said clasp is connected to said cutting knife.

30. The staple cartridge assembly of claim 28, wherein at least a portion of the locking member is of an elastic structure, the mounting base has a locking guide surface, and the transmission mechanism drives the staple pusher and the cutting blade to move along the locking guide surface toward the distal end of the actuator assembly, so that the locking guide surface abuts against the locking member to deform the locking member and drive the free end of the locking member to move close to a plane where a tissue bonding surface on the mounting base is located to lock the locking member; the transmission mechanism drives the nail pushing piece and the cutting knife to move towards the near end of the actuator assembly along the clamping guide surface, the free end of the clamping piece is driven to move away from the plane where the tissue joint surface is located on the mounting seat under the action of elastic restoring force of the elastic structure, and clamping with the clamping portion is released.

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