Actuating assembly for cutting stapler and cutting stapler

Abstract

The present disclosure relates to an actuator assembly for a cutting stapler, the actuator assembly comprising: a clamp head portion and a sleeve portion. The sleeve portion comprises: a cutting knife; a protective lock; a firing safety assembly mounted to the cutting knife, the firing safety assembly being configured to prevent repeated firing of the cutting knife; and a secondary docking prevention portion, the secondary docking prevention portion being configured to maintain the protective lock in a docking position when the cutting knife is withdrawn to an initial position, thereby preventing secondary docking between the actuator assembly and the firing assembly of the cutting stapler. The present disclosure also relates to a cutting stapler.

Description

Technical Field

[0001] The present disclosure relates to the technical field of surgical medical instruments, and in particular, to an actuator assembly for a cutting stapler. In addition, the present disclosure also relates to a cutting stapler. Background Art

[0002] Minimally invasive surgery is a new treatment method. The steps of minimally invasive surgery are the same as those of traditional surgery, but the trauma can be relatively small. The cutting stapler and its actuator suitable for minimally invasive surgery are instruments that can staple multiple staggered staples into human tissue in a straight line to achieve anastomosis, and can use a cutting knife to cut the tissue between the staple lines. It is also one of the instruments widely used in minimally invasive surgery, mainly used for tissue resection, transection and anastomosis in open or endoscopic surgery in abdominal surgery, gynecology, pediatrics and thoracic surgery.

[0003] However, the actuator components used in existing cutting staplers are mainly disposable. After the actuator components are used or the firing safety fails due to docking, adjustment and clamping of tissues, if the removed actuator components can be re-docked and reinstalled on the firing component of the cutting stapler, it will cause the actuator to fail to fire during firing and may even cause damage to the cutting stapler due to forced firing. Summary of the invention

[0004] The purpose of the present disclosure is to provide an improved actuator assembly for a cutting stapler and a cutting stapler, so as to solve the above-mentioned problems in the prior art.

[0005] According to a first aspect of the present disclosure, an actuator assembly for a cutting stapler is provided, the actuator assembly comprising: a clamp head portion; and a sleeve portion, wherein the distal end of the sleeve portion is connected to the clamp head portion, and the proximal end of the sleeve portion is configured to be connected to the firing assembly of the cutting stapler, the sleeve portion comprising: a cutting knife; and a protective lock, wherein the protective lock is arranged on the proximal side of the sleeve portion and is configured to be rotatable relative to the sleeve portion between a protective position and a docking position, and before the first docking of the actuator assembly with the firing assembly, the protective lock is in the protective position to lock the cutting knife The protective lock is maintained in the initial position, and when the execution assembly completes the first docking with the firing assembly, the protective lock rotates from the protective position to the docking position to allow the firing assembly to perform a firing operation and thus fire the cutting knife; a firing safety assembly installed to the cutting knife, the firing safety assembly is configured to prevent repeated firing of the cutting knife; and an anti-secondary docking portion, the anti-secondary docking portion is configured to maintain the protective lock in the docking position when the cutting knife is withdrawn to the initial position, thereby preventing secondary docking between the execution assembly and the firing assembly of the cutting stapler.

[0006] In one embodiment of the actuator assembly, the sleeve portion includes: a sleeve; a first shell half and a second shell half disposed in the sleeve, and the cutting knife and the firing safety assembly are disposed between the first shell half and the second shell half.

[0007] In one embodiment of the actuator, the anti-secondary docking portion includes: a narrow groove arranged on the first shell half; and a sliding member, the bottom side of the sliding member includes a protrusion, and the protrusion is respectively abutted against both sides of the narrow groove along the longitudinal direction, and the sliding member can slide within the longitudinal range defined by the narrow groove.

[0008] In one embodiment of the actuator assembly, the firing safety assembly comprises: a connecting member connected to the cutting knife, a fixing fork and a pivot pin, wherein the fixing fork is connected to the connecting member through the pivot pin and can rotate around the pivot pin.

[0009] In one embodiment of the actuator assembly, the first shell half includes a boss, and before the first firing of the cutting knife, the fixed fork of the firing safety assembly is crimped on the boss, so that during the first firing of the cutting knife, the fixed fork moves distally along the boss and passes over the protrusion of the sliding member.

[0010] In one embodiment of the actuator, the first shell half also includes a step portion, and after the first firing of the cutting knife is completed, as the cutting knife is withdrawn to the initial position, the fixing fork slides from the boss to the step portion and abuts against the protrusion to drive the sliding member to withdraw together, and when the cutting knife is withdrawn to the initial position, the fixing fork is clamped between the boss of the first shell half and the protrusion of the sliding member and pushes the sliding member to the proximal extended position, thereby keeping the protection lock in the docking position.

[0011] According to a second aspect of the present disclosure, there is provided a cutting stapler, comprising: an actuating assembly as described in any one of the above embodiments; and a firing assembly, the actuating assembly being removably connectable to the actuating assembly.

[0012] The beneficial effect of the embodiment of the present disclosure is that by providing an anti-secondary docking portion in the execution assembly of the cutting stapler, it is possible to ensure that the execution assembly of the cutting stapler cannot be secondarily docked with the firing assembly after the execution assembly is used or after the firing safety fails due to docking adjustment of the clamped tissue, thereby ensuring the safety of operation and preventing the cutting stapler from being damaged due to misoperation. In addition, the anti-secondary docking portion used in the embodiment of the present disclosure has a simple structure and is easy to install, and is applicable to different cutting staplers and execution assemblies of the cutting stapler. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Various objects, features and advantages of the present disclosure will become more apparent by considering the following description of the preferred embodiments of the present disclosure in conjunction with the accompanying drawings. The accompanying drawings are merely exemplary illustrations of the present disclosure and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always represent the same or similar parts. It should be understood that the drawings given are merely exemplary illustrations of the present disclosure. For those of ordinary skill in the art, modifications and variations can be made based on these drawings to obtain other feasible embodiments.

[0014] Figure 1 is an exploded schematic diagram of an actuator assembly of a cutting stapler according to the present disclosure.

[0015] Figure 2A-2B is a schematic diagram of a protection lock in an execution component according to the present disclosure, Figure 2A shows the protection lock in the protection position, Figure 2B The dongle is shown in the docked position.

[0016] Figure 2C A firing assembly of a cutting stapler is shown and a docking slot therein capable of docking with a protective lock is shown.

[0017] Figure 3A-3B Schematic diagrams of sliding members in the execution assembly according to the present disclosure at different angles.

[0018] Figure 4 is a schematic diagram of a first housing half in an actuator assembly according to the present disclosure.

[0019] Figure 5A-5B It is a schematic diagram of a firing safety assembly and a cutting knife in an execution assembly according to the present disclosure.

[0020] Fig. 6A It is a partial schematic diagram of the execution assembly according to the present disclosure, showing the positional relationship between the sliding member and the protection lock before the execution assembly of the cutting stapler and the firing assembly are first docked.

[0021] Figure 6B It is a partial schematic diagram of the execution assembly according to the present disclosure, showing the positional relationship between the sliding member and the firing safety assembly before the first firing of the cutting knife.

[0022] Figure 7 is a partial schematic diagram of an execution assembly according to the present disclosure, illustrating the positional relationship between a slide and a firing safety assembly during the withdrawal of a cutting knife.

[0023] Figures 8A-8CIt is a partial schematic diagram of the execution assembly according to the present disclosure, showing the positional relationship between the slide and the firing safety assembly when the cutting knife is withdrawn to the initial position.

[0024] List of reference numerals:

[0025] 10- pliers head; 20- sleeve; 21- first connecting piece; 22- second connecting piece; 23- first shell half; 24- second shell half; 25- protection lock; 26- firing safety assembly; 27- cutting knife; 28- sliding member; 30- firing assembly; 31- docking groove; 231: narrow groove; 232: boss; 233: step portion; 251- locking tongue; 261: connecting member; 262: fixing fork; 263: pivot pin; 281- protrusion. DETAILED DESCRIPTION

[0026] The present disclosure will be described below with reference to the accompanying drawings, wherein the accompanying drawings show preferred embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in a variety of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the technical features in the embodiments disclosed herein can be combined in various ways to provide more additional embodiments. Those skilled in the art may appropriately modify the detailed configuration without departing from the main purpose of the present disclosure.

[0027] It should be understood that the same reference numerals represent the same elements throughout the drawings. In the drawings, the dimensions of certain features may be distorted for clarity.

[0028] Unless otherwise specified, the terms (including technical and scientific terms) used herein shall have the meanings that are generally understood by those of ordinary skill in the art to which the present disclosure relates. Unless otherwise specified, the terms "including" and "comprising" used in the specification and claims shall be interpreted as open-ended meanings, that is, "including" and "comprising" shall be interpreted as synonymous with the terms "including at least" or "comprising at least".

[0029] Unless otherwise specified, the terms “upper”, “lower”, “top”, “bottom”, etc. used in the present disclosure refer only to the relative positions of the device and its related components in the state as shown in the drawings.

[0030] Unless otherwise specified, the term “distal side” used in the present disclosure refers to a side away from an operator of the cutting stapler, and the term “proximal side” refers to a side close to the operator of the cutting stapler.

[0031] It should be understood that the terms used in the specification are only used to describe specific embodiments and are not intended to limit the present disclosure. For the sake of brevity and / or clarity, well-known functions or structures may not be described in detail.

[0032] The first embodiment of the present disclosure provides an actuator component for a cutting stapler, wherein the cutting stapler is used to perform operations such as cutting and stapling on human tissue. It can be a linear cutting stapler, including a firing component and an actuator component. The firing component is used to drive the actuator component to complete corresponding operations, and the actuator component is used to perform operations such as cutting and stapling on human tissue.

[0033] Figure 1 is an exploded schematic diagram of an actuator assembly of a cutting stapler according to the present disclosure. The cutting stapler includes an actuator assembly (see Figure 1 ) and firing assembly 30 (see Figure 2C The firing assembly 30 can be connected to the execution assembly and can adopt the structure of any firing assembly in the prior art. Therefore, the structure of the firing assembly will not be described in detail in this disclosure.

[0034] like Figure 1 As shown, the execution assembly of the cutting stapler includes a clamp head 10 and a sleeve portion. The distal end of the sleeve portion is connected to the clamp head 10, and the proximal end of the sleeve portion is configured to be connected to the firing assembly 30 of the cutting stapler. Specifically, the clamp head 10 is used to specifically perform operations such as cutting and anastomosis on human tissue. The clamp head 10 may include a nail magazine seat and an anvil seat, and the anvil seat may be connected to the nail magazine seat in an articulated manner. In addition, the nail magazine can be removably installed in the nail magazine seat.

[0035] In addition, if Figure 1 As shown, the sleeve portion may include a sleeve 20, a first connecting piece 21, a second connecting piece 22, a first housing half 23, a second housing half 24, a protection lock 25, a firing safety assembly 26, a cutting knife 27, etc. The related parts of the sleeve portion are connected to the pliers head 10 through the first connecting piece 21 and the second connecting piece 22. The first housing half 23 and the second housing half 24 are arranged in the sleeve 20, and the firing safety assembly 26 is installed to the cutting knife 27, and the firing safety assembly 26 and the cutting knife 27 are arranged between the first housing half 23 and the second housing half 24. The firing safety assembly 26 is configured to prevent the repeated firing of the cutting knife 27, and its specific structure will be described in detail below. The cutting knife 27 is connected to the firing assembly through a transmission mechanism, and such a transmission mechanism can be arranged in the sleeve portion and / or the firing assembly.

[0036] See also Figure 1 as well as Figure 2A-2CAs shown, the protection lock 25 is arranged at the proximal side of the sleeve part and is configured to be able to be in a protection position ( Figure 2A ) and docking position ( Figure 2B ). Figure 2A and 2C As shown, the protection lock 25 includes a locking tongue 251, and the firing assembly 30 includes an engagement groove 31. The locking tongue 251 can achieve docking of the actuator assembly and the firing assembly via the engagement groove 31. Before the first docking of the actuator assembly and the firing assembly of the cutting stapler, the protection lock 25 is in the protection position to keep the cutting knife 27 in the initial position. Figure 2B As shown in FIG. 2C , when the actuator assembly of the cutting stapler completes the first docking with the firing assembly, the protection lock 25 rotates from the protection position to the docking position to allow the firing assembly to perform a firing operation to fire the cutting knife 27 .

[0037] An important improvement of the actuator assembly of the cutting stapler disclosed in the present invention is that a secondary docking prevention portion is provided. After the cutting knife 27 is fired for the first time and the cutting and stapling operation is completed, the secondary docking prevention portion is configured to keep the protection lock 25 in the docking position when the cutting knife 27 is withdrawn to the initial position, thereby preventing secondary docking between the actuator assembly and the firing assembly of the cutting stapler, thereby ensuring the safety of the operation and avoiding damage to the cutting stapler due to misoperation.

[0038] The following will be combined Figure 1-8C The preferred structure and operation process of the anti-secondary docking part are specifically described. However, those skilled in the art should understand that the specific structure and setting method of the anti-secondary docking part are not limited to Figure 1-8C In fact, those skilled in the art can conceive of other variations and modifications of the anti-secondary docking portion, as long as the anti-secondary docking portion can achieve the function of "preventing the secondary docking between the execution assembly and the firing assembly of the cutting stapler".

[0039] like Figure 3A-3B and Figure 4 As shown, the anti-secondary docking portion includes: a slot 231 provided on the first housing half 23; and a sliding member 28. The bottom side of the sliding member 28 includes a protrusion 281, and the protrusion 281 abuts against both sides of the slot 231 along the longitudinal direction, so that the sliding member 28 can slide within the longitudinal range defined by the slot 231.

[0040] like Figure 5A-5BAs shown, the firing safety assembly 26 includes: a connecting member 261 connected to the cutting knife 27, a fixing fork 262 and a pivot pin 263. The fixing fork 262 is connected to the connecting member 261 through the pivot pin 263 and can rotate around the pivot pin 263. Therefore, during the firing and withdrawal process of the cutting knife 27, the firing safety assembly 26 receives the firing force from the firing assembly 30 and drives the cutting knife 27 to move together.

[0041] like Fig. 6A As shown, before the first docking of the execution assembly of the cutting stapler with the firing assembly, the slide 28 is in the narrow groove 231 on the first shell half 23, the protection lock 25 is in the protection position, and the slide 28 does not affect the rotation of the protection lock 25 from the protection position to the docking position.

[0042] like Figure 6B As shown, the first housing half 23 includes a boss 232. Before the first firing of the cutting knife 27, the fixed fork 262 of the firing safety assembly 26 is pressed against the boss 232 so that during the first firing of the cutting knife, the fixed fork 262 can move distally along the boss 232 and pass over the protrusion 281 of the slide 28.

[0043] like Figure 7 As shown, the first housing half 13 also includes a step portion 233. After the first firing of the cutting knife 27 is completed, as the cutting knife 27 is withdrawn to the initial position, the fixing fork 262 will slide from the boss 232 to the step portion 233 and thus abut against the protrusion 281 of the sliding member 28 to drive the sliding member 28 to withdraw together.

[0044] Afterwards, if Figures 8A-8C As shown, when the cutting knife 27 is withdrawn to the initial position, the fixing fork 262 is clamped between the boss 232 of the first housing half 23 and the protrusion 281 of the sliding member 28 and pushes the sliding member 28 to the proximal extended position ( Figure 8C ).like Figure 8B and 8C As shown, the extended slide 28 holds the protection lock 25 in the docking position, at which the slide 28 cannot move because it is caught by the fixed fork 262, and the protection lock 25 cannot be rotated back from the docking position to the protection position. Therefore, it is ensured that the execution assembly of the cutting stapler cannot be docked with the firing assembly for a second time.

[0045] A second embodiment of the present disclosure provides a cutting stapler, which is used to perform operations such as cutting and stapling on human tissue. For example, it can be a linear cutting stapler, which includes a firing assembly and an execution assembly described in the first embodiment above, wherein the firing assembly is used to drive the execution assembly to complete corresponding operations, and the execution assembly is used to perform operations such as cutting and stapling on human tissue.

[0046] The above-mentioned embodiment of the present disclosure, by providing an anti-secondary docking portion in the execution assembly of the cutting stapler, can ensure that the execution assembly of the cutting stapler cannot be secondarily docked with the firing assembly after the execution assembly is used or after the firing safety fails due to docking adjustment of the clamped tissue, thereby ensuring the safety of operation and preventing the cutting stapler from being damaged due to misoperation. In addition, the anti-secondary docking portion used in the embodiment of the present disclosure has a simple structure and is easy to install, and is applicable to different cutting staplers and execution assemblies of the cutting stapler.

[0047] In addition, although exemplary embodiments have been described herein, the scope includes any and all embodiments based on the present disclosure with equivalent elements, modifications, omissions, combinations (e.g., various embodiments intersecting schemes), adaptations or changes. The elements in the claims will be interpreted broadly based on the language adopted in the claims, and are not limited to the examples described in this specification or during the implementation of this application, and the examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered as examples only, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.

[0048] The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more schemes thereof) can be used in combination with each other. For example, a person of ordinary skill in the art can use other embodiments when reading the above description. In addition, in the above-mentioned specific embodiments, various features can be combined together to simplify the present disclosure. This should not be interpreted as an intention that a disclosed feature that is not required to be protected is necessary for any claim. On the contrary, the subject matter of the present disclosure may be less than all the features of a specific disclosed embodiment. Thus, the following claims are incorporated into the specific embodiments as examples or embodiments, wherein each claim is independently a separate embodiment, and it is considered that these embodiments can be combined with each other in various combinations or arrangements.

[0049] The scope of the present disclosure should be determined with reference to the attached claims and the full scope of equivalent forms granted by these claims. The above embodiments are only exemplary embodiments of the present disclosure and are not intended to limit the present disclosure. The protection scope of the present disclosure is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present disclosure within the essence and protection scope of the present disclosure, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present disclosure.

Claims

1. An actuator assembly for a cutting stapler, characterized in that: The execution components include: The clamp head; and A sleeve portion, the distal end of the sleeve portion is connected to the clamp head, and the proximal end of the sleeve portion is configured to be connected to the firing assembly of the cutting stapler, Wherein, the sleeve portion comprises: Cutting knife; a protection lock, the protection lock being arranged at the proximal side of the sleeve portion and being configured to be rotatable between a protection position and a docking position relative to the sleeve portion, wherein before the execution assembly docks with the firing assembly for the first time, the protection lock is in the protection position to keep the cutting knife in the initial position, and when the execution assembly completes the first docking with the firing assembly, the protection lock is rotated from the protection position to the docking position to allow the firing assembly to perform a firing operation so as to fire the cutting knife; a firing safety assembly mounted to the cutting knife, the firing safety assembly being configured to prevent repeated firing of the cutting knife; and The anti-secondary docking portion is configured to keep the protection lock in the docking position when the cutting knife is withdrawn to the initial position, thereby preventing the secondary docking between the execution assembly and the firing assembly of the cutting stapler.

2. The actuator according to claim 1, characterized in that: The sleeve portion comprises: a sleeve; a first shell half and a second shell half arranged in the sleeve, and the cutting knife and the firing safety assembly are arranged between the first shell half and the second shell half.

3. The execution assembly according to claim 2, characterized in that: The anti-secondary docking portion includes: a narrow groove arranged on the first shell half; and a sliding member, the bottom side of the sliding member includes a protrusion, which is respectively abutted against both sides of the narrow groove along the longitudinal direction by the protrusion, and the sliding member can slide within the longitudinal range defined by the narrow groove.

4. The execution assembly according to claim 3, characterized in that: The firing safety assembly includes: a connecting piece connected to the cutting knife, a fixing fork and a pivot pin, wherein the fixing fork is connected to the connecting piece through the pivot pin and can rotate around the pivot pin.

5. The execution assembly according to claim 4, characterized in that: The first shell half includes a boss, and before the first firing of the cutting knife, the fixed fork of the firing safety assembly is crimped on the boss, so that during the first firing of the cutting knife, the fixed fork moves distally along the boss and passes over the protrusion of the sliding member.

6. The actuator according to claim 5, characterized in that: The first shell half also includes a step portion. After the first firing of the cutting knife is completed, as the cutting knife is withdrawn to the initial position, the fixing fork slides from the boss to the step portion and abuts against the protrusion to drive the sliding member to withdraw together, and when the cutting knife is withdrawn to the initial position, the fixing fork is clamped between the boss of the first shell half and the protrusion of the sliding member and pushes the sliding member to the proximal extended position, thereby keeping the protection lock in the docking position.

7. A cutting stapler, characterized in that: The cutting stapler comprises: An execution component according to any one of claims 1 to 6; and A firing assembly is provided to which the actuator assembly can be removably coupled.

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