Secondary percussion prevention mechanism of novel anastomat

Abstract

The utility model discloses a novel anastomat's secondary percussion prevention mechanism, including connecting piece, connecting piece in the first direction is connected with nail anvil and nail bin subassembly, nail anvil and nail bin subassembly are equipped with secondary percussion prevention subassembly, nail anvil is equipped with cutting knife motion chute, and the cutting knife motion chute is equipped with cutting knife motion chute. The cutting knife movement sliding groove is connected with a cutting knife in a sliding mode. The nail pushing device is simple in structure and reasonable in design, after the nail bin assembly is fired, the nail pushing block is located at the position away from the locking piece, namely, the nail pushing block does not abut against the locking piece, the locking piece is located in the cutting knife movement sliding groove at the moment, after firing is completed, the cutting knife can normally return to the initial position, and when the nail bin assembly is fired for the second time, the nail pushing block does not abut against the locking piece. The nail pushing block is located at the position far away from the locking piece, that is, the nail pushing block does not abut against the locking piece, at the moment, the locking piece is located in the cutting knife movement sliding groove, the cutting knife cannot run in the cutting knife movement sliding groove, self-locking can be formed, normal percussion of the nail bin assembly can be guaranteed, and repeated percussion can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of electric staplers, in particular to an anti-secondary-firing mechanism for a novel stapler. Background Art

[0002] In minimally invasive surgery, a laparoscopic cutting stapler is an important surgical instrument. The laparoscopic cutting stapler can enter through a small incision, enabling doctors to quickly and conveniently cut and anastomose tissues as needed. With the development of technology, staplers are more accepted by doctors because of their labor-saving and convenient operation.

[0003] Deficiencies of the prior art:

[0004] At present, when using a stapler, there is a possibility of secondary firing after the cartridge assembly is fired, which may cause harm to patients and poses a relatively high operation risk. Content of the Utility Model

[0005] The purpose of the utility model is to provide an anti-secondary-firing mechanism for a novel stapler to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An anti-secondary-firing mechanism for a novel stapler, including a connecting block, with the length direction and height direction of the connecting block being the first direction and the second direction respectively; the connecting block is connected with an anvil and a cartridge assembly in the first direction, the anvil and the cartridge assembly are provided with an anti-secondary-firing component, the anvil is provided with a cutting knife movement chute, the cutting knife movement chute is slidably connected with a cutting knife, and the anti-secondary-firing component includes:

[0007] A locking member, which is movably connected with the anvil;

[0008] A pusher block, which is arranged on the cartridge assembly;

[0009] An elastic member, which is arranged on the anvil and connects the locking member.

[0010] Preferably, the pusher block moves in the first direction on the cartridge assembly.

[0011] Preferably, the anvil and the cartridge assembly are arranged in the second direction and are connected by a rotating component.

[0012] Preferably, the cutting knife moves in the first direction in the cutting knife movement chute.

[0013] Preferably, the first direction and the second direction are perpendicular to each other.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The anti-secondary firing mechanism of the novel stapler is provided with an anti-secondary firing assembly, which includes a locking piece, a nail pushing block and an elastic piece. When the staple cartridge assembly is not fired, the nail pushing block abuts against the locking piece, and the locking piece is not in the cutting knife movement slot. The cutting knife can move away from the locking piece in a first direction on the cutting knife movement slot. When the staple cartridge assembly is fired, the nail pushing block is located away from the locking piece, that is, the nail pushing block does not abut against the locking piece. At this time, the locking piece is in the cutting knife movement slot. When the firing is completed, The cutting knife can return to its initial position normally. When the nail magazine assembly is fired for the second time, the nail pushing block is located away from the locking piece, that is, the nail pushing block does not interfere with the locking piece, and the elastic piece resets the locking piece. At this time, the locking piece is in the cutting knife movement slot, and the cutting knife cannot run in the cutting knife movement slot, which can form a self-locking function, which can not only ensure the normal firing of the nail magazine assembly, but also prevent repeated firing. In addition, by providing an anti-secondary firing assembly, it can effectively avoid the accidental firing of the nail magazine assembly after being fired, causing harm to the patient, thereby reducing operational risks.

[0016] 2. The new type of stapler has an anti-secondary firing mechanism, and the staple cartridge assembly can be replaced as needed to increase the life of the instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the nail magazine assembly of the utility model after one firing;

[0019] Figure 3 This is a schematic diagram of the nail magazine assembly of the utility model after the second firing;

[0020] In the figure: 110, connecting block; x, first direction; y, second direction; 120, nail anvil; 130, nail magazine assembly; 141, locking member; 142, nail pushing block; 143, elastic member; 121, cutting knife movement slide groove; 122, cutting knife. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0023] In the description of this patent, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "setting" shall be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "several" is two or more unless otherwise clearly and specifically defined.

[0025] Embodiment

[0026] Please refer to Figures 1-3As shown in the figure, the technical solution of the anti-secondary firing mechanism of a new stapler provided by the present utility model includes a connecting block 110. The length direction and height direction of the connecting block 110 are respectively the first direction x and the second direction y, and the first direction x and the second direction y are perpendicular to each other. The connecting block 110 is connected with an anvil 120 and a staple cartridge assembly 130 in the first direction x. The anvil 120 and the staple cartridge assembly 130 are arranged in the second direction y and are connected by a rotating assembly. The anvil 120 and the staple cartridge assembly 130 are provided with an anti-secondary firing assembly. The anvil 120 is provided with a cutting knife movement chute 121, and a cutting knife 122 is slidably connected to the cutting knife movement chute 121. The anti-secondary firing assembly includes a locking member 141 and a pusher block 142. The locking member 141 is movably connected to the anvil 120 through an elastic member 143. The pusher block 142 is arranged on the staple cartridge assembly 130. The pusher block 142 moves in the first direction x on the staple cartridge assembly 130. By providing the anti-secondary firing assembly, it can effectively avoid the accidental firing of the staple cartridge assembly 130 after being fired, causing harm to the patient, and reducing the operation risk. The cutting knife 122 moves in the first direction x in the cutting knife movement chute 121. When the staple cartridge assembly 130 is not fired, the pusher block 142 abuts against the locking member 141, and the locking member 141 is not in the cutting knife movement chute 121. The cutting knife 122 can move away from the locking member 141 in the first direction x on the cutting knife movement chute 121. When the staple cartridge assembly 130 is fired, the pusher block 142 is located at a position away from the locking member 141, that is, the pusher block 142 does not abut against the locking member 141. At this time, the locking member 141 is in the cutting knife movement chute 121. After the firing is completed, the cutting knife 122 can normally retract to the initial position. When the staple cartridge assembly 130 is fired a second time, the pusher block 142 is located at a position away from the locking member 141, that is, the pusher block 142 does not abut against the locking member 141. The elastic member 143 resets the locking member 141. At this time, the locking member 141 is in the cutting knife movement chute 121, and the cutting knife 122 cannot move in the cutting knife movement chute 121, and self-locking can be formed, which can not only ensure the normal firing of the staple cartridge assembly 130 but also prevent repeated firing.

[0027] The working principle of the present utility model is as follows:

[0028] When the anti-secondary firing mechanism of the new stapler of the present embodiment is in use, by providing an anti-secondary firing component and a sliding component, when the staple cartridge assembly 130 is fired, the nail pushing block 142 is located at a position away from the locking piece 141, that is, the nail pushing block 142 does not conflict with the locking piece 141. At this time, the locking piece 141 is in the cutting knife movement slot 121. When the firing is completed, the cutting knife 122 can normally retreat to the initial position. When the staple cartridge assembly 130 is fired for the second time, the nail pushing block 142 is located at a position away from the locking piece 141, that is, the nail pushing block 142 does not conflict with the locking piece 141, and the elastic piece 143 resets the locking piece 141. At this time, the locking piece 141 is in the cutting knife movement slot 121, and the cutting knife 122 cannot run in the cutting knife movement slot 121, which can form a self-locking, which can not only ensure the normal firing of the staple cartridge assembly 130, but also prevent repeated firing.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel anti-secondary firing mechanism of a stapler, comprising a connecting block (110), characterized in that: The length direction and height direction of the connecting block (110) are respectively a first direction (x) and a second direction (y); the connecting block (110) is connected with a nail anvil (120) and a nail magazine assembly (130) in the first direction (x); the nail anvil (120) and the nail magazine assembly (130) are provided with an anti-secondary firing assembly; the nail anvil (120) is provided with a cutting knife movement slide groove (121); the cutting knife movement slide groove (121) is slidably connected with a cutting knife (122); the anti-secondary firing assembly comprises: A locking member (141), wherein the locking member (141) is movably connected to the anvil (120); A nail pushing block (142), the nail pushing block (142) being arranged on the nail magazine assembly (130); An elastic member (143), wherein the elastic member (143) is arranged on the anvil (120) and connected to the locking member (141).

2. The novel anti-secondary firing mechanism of the stapler according to claim 1 is characterized in that: The nail pushing block (142) moves in the first direction (x) on the nail magazine assembly (130).

3. The novel anti-secondary firing mechanism of the stapler according to claim 1 is characterized in that: The nail anvil (120) and the nail magazine assembly (130) are arranged in the second direction (y) and are connected by a rotating assembly.

4. The novel anti-secondary firing mechanism of the stapler according to claim 1 is characterized in that: The cutting knife (122) moves in the first direction (x) in the cutting knife movement slot (121).

5. The novel anti-secondary firing mechanism of the stapler according to claim 1 is characterized in that: The first direction (x) and the second direction (y) are perpendicular to each other.

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