Nail bin assembly specification identification mechanism and electric endoscope anastomat thereof

Abstract

The utility model relates to the technical field of anastomats, in particular to a nail bin assembly specification identification mechanism and an electric endoscope anastomat thereof. Comprising a displacement piece capable of moving backwards under the pushing of an inserting part of a nail bin assembly, an elastic piece arranged at the rear end of the displacement piece, a plurality of contacts arranged on the moving track of the elastic piece and a reset piece used for driving the displacement piece to reset. The displacement piece comprises a front push plate located at the front end and used for being in contact with the inserting part, a sleeve arranged outside the mandrel in a sleeving mode and capable of moving backwards under the thrust action of the front push plate and a rear push plate connected with the rear end of the sleeve, and a mounting block used for mounting an elastic piece is fixed to the rear push plate; according to the utility model, the displacement piece which can move backwards under the pushing of the inserting part of the nail bin assembly is utilized to drive the elastic sheet on the displacement piece to be in contact with different contacts so as to be conducted, so that different signals are given out; therefore, an operator can visually know the specification of the currently-adopted nail bin assembly in the operation process, and the control mechanism can be switched to different driving modes for subsequent operation.

Description

Technical Field

[0001] The utility model relates to the technical field of staplers, in particular to a staple cartridge assembly specification identification mechanism and an electric laparoscopic stapler thereof. Background Art

[0002] A stapler generally includes a gun body assembly and a staple cartridge assembly installed at the front end thereof. The titanium staples in the staple cartridge assembly can be driven by a control mechanism inside the gun body assembly to suture tissues.

[0003] The staple cartridge assembly has different specifications and can be used to suture tissues of different lengths. Therefore, during the operation, different specifications of staple cartridge assemblies can be installed on the gun body assembly to suture tissues of different lengths. Correspondingly, the control mechanism needs to correspond to different specifications of staple cartridge assemblies to select corresponding driving modes. Therefore, an identification mechanism needs to be designed to identify different specifications of staple cartridge assemblies. Summary of the Utility Model

[0004] In order to identify different specifications of staple cartridge assemblies so that the surgeon can intuitively understand the specifications of the currently used staple cartridge assembly and enable the control mechanism to switch to different driving modes for subsequent operations, the utility model adopts the following technical solutions: A staple cartridge assembly specification identification mechanism, the staple cartridge assembly is detachably installed at the front end of the gun body assembly of the stapler, the identification mechanism is arranged between the staple cartridge assembly and the gun body assembly, the gun body assembly includes a fixed seat and a mandrel that is arranged inside the fixed seat and can move back and forth. The identification mechanism includes a displacement member that can move backward under the push of the insertion part of the staple cartridge assembly, a spring piece arranged at the rear end of the displacement member, a plurality of spaced-apart contacts arranged on the moving track of the spring piece and used to contact the spring piece to form an electrical signal, and a reset member used to drive the displacement member to reset;

[0005] The displacement member includes a front push plate located at the front end and used to contact the insertion part, a sleeve sleeved outside the mandrel and can move backward under the thrust of the front push plate, and a rear push plate connected to the rear end of the sleeve. An installation block for installing the spring piece is fixed on the rear push plate.

[0006] Further, the installation block includes a connection part used to connect with the rear push plate, an installation part used to install the spring piece, and a guiding part that is slidably matched with the fixed seat.

[0007] Further, the spring piece includes a contact section used to contact the contact point and an installation section that bends forward from the rear end of the contact section. The rear end of the installation section bulges outwards on both sides to form a limiting part, and the front end has two oppositely arranged hooks. The installation part includes a through groove for the installation section to pass through, an abutting part arranged at the rear end of the through groove and used to abut against the limiting part, and a clamping block arranged at the front end of the through groove and used to cooperate with the hook. An elastic deformation groove is arranged between the two hooks.

[0008] Further, the reset member includes a collar sleeved outside the mandrel and fixed to the rear push plate. An elastic member is provided between the collar and the fixed seat, and stepped surfaces are provided at the ends of both of them close to each other. Both ends of the elastic member are respectively abutted against the two stepped surfaces.

[0009] Further, a sleeved portion for sleeving on the mandrel is formed by bending the front end of the rear push plate. The sleeved portion is arranged between the sleeve and the collar, and a clamping portion is protruded from the rear push plate. A clamping groove for the clamping portion to be inserted into is formed in the collar.

[0010] Further, a connecting block is provided between the front push plate and the sleeve. The connecting block includes a front connecting section for connecting with the front push plate and a rear connecting section sleeved outside the mandrel for pushing the sleeve to move backward. A protruding portion is protruded on the front connecting section, and a slot for the protruding portion to be inserted into is formed in the front push plate.

[0011] Further, a bracket is provided above the mounting block. The middle part of the bottom of the bracket protrudes so that grooves are formed by recessing both sides. The contact is installed inside one of the grooves. The elastic sheet is provided with two contact sections. The two contact sections correspond to the two grooves one by one, and each contact section is slidably arranged inside the groove corresponding to it.

[0012] Further, the cross section of the mandrel is in the shape of a major arc bow structure, which has a plane fitting with the front push plate.

[0013] Further, the connecting portion includes two protruding bumps, and a clamping groove for the bumps to be inserted into is formed in the rear push plate.

[0014] An electric laparoscopic stapler includes the above-mentioned staple cartridge assembly specification identification mechanism.

[0015] The beneficial effects of the present utility model: The present utility model uses a displacement member that can move backward under the push of the insertion portion of the staple cartridge assembly to drive the elastic sheet on it to contact different contacts and then conduct, so as to give different signals, enabling the operator to intuitively understand the specification of the currently used staple cartridge assembly during the operation and enabling the control mechanism to switch to different driving modes for subsequent operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present utility model will be further described below with reference to the drawings and embodiments.

[0017] Figure 1 is a schematic structural diagram of an electric ligator;

[0018] Figure 2 is Figure 1 a partial enlarged view of part A in

[0019] Figure 3 is the front view of the present utility model;

[0020] Figure 4 is the exploded view of the present utility model;

[0021] Figure 5 is the assembly schematic diagram of the mounting block, bracket, elastic piece and contact;

[0022] Figure 6 is the structural schematic diagram of the mounting block;

[0023] Figure 7 is the structural schematic diagram of the elastic piece;

[0024] In the figure:

[0025] 1. Staple cartridge assembly; 101. Insertion part;

[0026] 2. Gun body assembly; 201. Fixed seat; 202. Core shaft; 2021. Plane;

[0027] 3. Displacement part; 301. Front push plate; 3011. Slot; 302. Sleeve; 303. Rear push plate; 3031. Sleeve part; 3032. Clamping part; 3033. Card slot; 304. Connecting block; 3041. Front connecting section; 3042. Rear connecting section;

[0028] 4. Elastic piece; 401. Contact section; 402. Mounting section; 4021. Limiting part; 4022. Hook; 4023. Elastic deformation groove;

[0029] 5. Contact;

[0030] 6. Reset part; 601. Collar; 6011. Clamping groove; 602. Elastic part;

[0031] 7. Mounting block; 701. Through slot; 702. Abutting part; 703. Block; 704. Protrusion; 705. Guide groove;

[0032] 8. Bracket; 801. Slide groove. Detailed implementation manners

[0033] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner. Therefore, they only show the components related to the present utility model. Directions and references (such as up, down, left, right, etc.) can only be used to assist in the description of the features in the drawings. Therefore, the following specific implementation manners are not adopted in a restrictive sense, and the scope of the claimed subject matter is only defined by the appended claims and their equivalent forms.

[0034] Embodiment 1:

[0035] As Figure 1 and Figure 2As shown in the figure, a specification recognition mechanism for a staple cartridge assembly. The staple cartridge assembly 1 is detachably installed at the front end of the gun body assembly 2 of a stapler. The gun body assembly 2 includes a fixed seat 201 and a mandrel 202 that is disposed inside the fixed seat 201 and can move back and forth. The recognition mechanism is disposed between the staple cartridge assembly 1 and the gun body assembly 2. The recognition mechanism includes a displacement member 3 that can move backward under the push of the insertion portion 101 of the staple cartridge assembly 1, a spring piece 4 disposed at the rear end of the displacement member 3, a plurality of spaced-apart contacts 5 disposed on the movement trajectory of the spring piece 4 and used to contact the spring piece 4 to form an electrical signal, and a reset member 6 used to drive the displacement member 3 to reset. The other end of the contact 5 is connected to a circuit board. In this embodiment, three contacts 5 are provided, so that three different signals can be formed in contact with the spring piece 4 to represent three different specifications of the staple cartridge assembly 1.

[0036] The displacement member 3 includes a front push plate 301 located at the front end and used to contact the insertion portion 101, a sleeve 302 sleeved outside the mandrel 202 and capable of moving backward under the thrust of the front push plate 301, and a rear push plate 303 connected to the rear end of the sleeve 302.

[0037] Staple cartridge assemblies 1 of different specifications have insertion portions 101 of different lengths. When the insertion portions 101 of different lengths are installed at the front end of the gun body assembly 2, the displacement member 3 can be pushed to move different distances, so that the spring piece 4 at the rear end of the displacement member 3 is conducted with contacts 5 at different positions to form different electrical signals, and the specification model of the staple cartridge assembly 1 can be displayed on the display screen of the gun body assembly 2.

[0038] In some examples, as Figure 6 shown, an installation block 7 is fixed on the rear push plate 303. The installation block 7 includes a connection portion for connecting to the rear push plate 303, an installation portion for installing the spring piece 4, and a guiding portion that is slidably engaged with the fixed seat 201. The guiding portion includes a guiding groove 705 that cooperates with a guide rail on the bracket 8.

[0039] In some examples, as Figure 7 shown, the spring piece 4 includes a contact section 401 for contacting the contact 5 and an installation section 402 that bends forward from the rear end of the contact section 401. The front end of the contact section 401 is an arc structure and protrudes toward the contact 5; the rear end of the installation section 402 protrudes toward both sides to form a limiting portion 4021 and the front end has two oppositely arranged hooks 4022, as Figure 5 and Figure 6As shown, the installation part includes a through groove 701 for the installation section 402 to pass through, an abutting part 702 arranged at the rear end of the through groove 701 and used for abutting against the limiting part 4021, and a clamping block 703 arranged at the front end of the through groove 701 and used for cooperating with the hook 4022. An elastic deformation groove 4023 for elastic deformation is arranged between the two hooks 4022. During installation, first pass the installation section 402 through the through groove 701 until the limiting part 4021 abuts against the abutting part 702, and then make the two hooks 4022 approach each other through the elastic deformation groove 4023 and snap them into the clamping block 703 to fix the elastic sheet 4.

[0040] In some examples, such as Figure 3 As shown, the reset member 6 includes a collar 601 sleeved outside the core shaft 202 and fixed to the rear push plate 303. An elastic member 602 is arranged between the collar 601 and the fixed seat 201, and stepped surfaces are arranged at one ends of both of them close to each other. The elastic member 602 is a spring and its two ends respectively abut against the two stepped surfaces. When the staple cartridge assembly 1 is removed from the gun body assembly 2, the thrust of the insertion part 101 on the displacement member 3 disappears, and the rear push plate 303 moves forward under the elastic force of the elastic member 602, pushing the sleeve 302 forward, and then the sleeve 302 pushes the front push plate 301 to reset.

[0041] In some examples, a sleeved part 3031 for sleeving on the core shaft 202 is formed by bending the front end of the rear push plate 303. The sleeved part 3031 is arranged between the sleeve 302 and the collar 601. When the sleeve 302 moves backward, it can drive the sleeved part 3031 and the collar 601 to move backward synchronously, compressing the elastic member 602 for energy storage. A clamping part 3032 protrudes from the rear push plate 303. The collar 601 is provided with a clamping groove 6011 for the clamping part 3032 to snap into and a through groove for the rear push plate 303 to pass through. The clamping part 3032 snapping into the clamping groove 6011 can fix the collar 601 and the rear push plate 303.

[0042] In some examples, such as Figure 4 As shown, a connecting block 304 is arranged between the front push plate 301 and the sleeve 302. The connecting block 304 includes a front connecting section 3041 for connecting with the front push plate 301 and a rear connecting section 3042 sleeved outside the core shaft 202 and used for pushing the sleeve 302 to move backward. The rear connecting section 3042 is a cylinder. A protruding part protrudes from the front connecting section 3041. The front push plate 301 is provided with a slot 3011 for the protruding part to insert into.

[0043] In some examples, a bracket 8 is provided above the mounting block 7. The middle part of the bottom of the bracket 8 protrudes so that both sides are recessed to form a chute 801. The contact 5 is installed inside one of the chutes 801, and a positioning pin is provided on the bracket 8. The contact 5 is provided with a positioning hole for inserting the positioning pin to position it. The elastic piece 4 is provided with two contact sections 401. The two contact sections 401 correspond to the two chutes 801 one by one, and each contact section 401 is slidably arranged inside the corresponding chute 801.

[0044] In some examples, as Figure 3 shown, the cross-section of the mandrel 202 is a major arc bow structure, which has a plane 2021 that fits against the front push plate 301. When the front push plate 301 moves backward under the thrust of the staple cartridge assembly 1 or moves forward under the action of the reset member 6, it fits against the plane 2021 of the mandrel 202, thereby improving the stability of the front push plate 301 during the movement process.

[0045] In some examples, the connecting portion includes two protruding bumps 704. The rear push plate 303 is provided with a slot 3033 for the bumps 704 to be inserted into. The bumps 704 are inserted into the slot 3033 to fix the rear push plate 303 to the mounting block 7.

[0046] Working principle:

[0047] The staple cartridge assemblies 1 of different specifications have plug-in portions 101 of different lengths. When the plug-in portions 101 of different lengths are installed at the front end of the gun body assembly 2, they can push the displacement member 3 to move different distances, so that the elastic piece 4 at the rear end of the displacement member 3 is conducted with the contacts 5 at different positions to form different signals, and the specification model of the staple cartridge assembly 1 can be displayed on the display screen of the gun body assembly 2;

[0048] During installation, after the plug-in portion 101 is inserted and fixed, it pushes the front push plate 301 to move backward. The front push plate 301 pushes the sleeve 302 to move backward through the connecting block 304. The sleeve 302 pushes the rear push plate 303 and the collar 601 to move backward synchronously. During the backward movement of the collar 601, the elastic member 602 is compressed and stores energy. The rear push plate 303 drives the elastic piece 4 to move backward through the mounting block 7, and the elastic piece 4 is conducted with the contact 5 to form an electrical signal.

[0049] During disassembly, the plug-in portion 101 is separated from the gun body assembly 2, and the thrust on the front push plate 301 disappears. The rear push plate 303 moves forward under the elastic force of the elastic member 602, pushes the sleeve 302 to move forward, and then the sleeve 302 pushes the front push plate 301 to reset through the connecting block 304.

[0050] Based on the above-mentioned ideal embodiments of the present utility model as inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A staple cartridge assembly specification recognition mechanism, wherein the staple cartridge assembly (1) is detachably installed at the front end of the gun body assembly (2) of a stapler, the recognition mechanism is arranged between the staple cartridge assembly (1) and the gun body assembly (2), the gun body assembly (2) includes a fixed seat (201) and a mandrel (202) that is arranged inside the fixed seat (201) and can move back and forth, and is characterized in that: The recognition mechanism includes a displacement member (3) that can move backward under the push of the insertion part (101) of the staple cartridge assembly (1), a spring piece (4) arranged at the rear end of the displacement member (3), a plurality of contacts (5) that are spaced apart and used to contact the spring piece (4) to form an electrical signal on the moving track of the spring piece (4), and a reset member (6) for driving the displacement member (3) to reset; The displacement member (3) includes a front push plate (301) located at the front end and used to contact the insertion part (101), a sleeve (302) sleeved outside the core shaft (202) and capable of moving backward under the thrust of the front push plate (301), and a rear push plate (303) connected to the rear end of the sleeve (302). An installation block (7) for installing the spring piece (4) is fixed on the rear push plate (303).

2. The staple cartridge assembly specification recognition mechanism according to claim 1, wherein: The installation block (7) includes a connection part for connecting with the rear push plate (303), an installation part for installing the spring piece (4), and a guiding part that is slidably matched with the fixed seat (201).

3. The staple cartridge assembly specification identification mechanism according to claim 2, wherein: The spring piece (4) includes a contact section (401) for contacting the contact (5) and an installation section (402) that bends forward from the rear end of the contact section (401). The rear end of the installation section (402) protrudes outwards on both sides to form a limiting part (4021), and the front end has two oppositely arranged hooks (4022). The installation part includes a through slot (701) for the installation section (402) to pass through, an abutting part (702) arranged at the rear end of the through slot (701) and used to abut against the limiting part (4021), and a clamping block (703) arranged at the front end of the through slot (701) and used to cooperate with the hook (4022). An elastic deformation slot (4023) is arranged between the two hooks (4022).

4. The staple cartridge assembly specification identification mechanism according to claim 1, characterized in that: The reset member (6) includes a collar (601) sleeved outside the core shaft (202) and fixed to the rear push plate (303). An elastic member (602) is arranged between the collar (601) and the fixed seat (201), and both ends close to each other are provided with stepped surfaces. The two ends of the elastic member (602) are respectively abutted against the two stepped surfaces.

5. The staple cartridge assembly specification recognition mechanism according to claim 4, wherein; A sleeving part (3031) for sleeving on the core shaft (202) is formed by bending the front end of the rear push plate (303). The sleeving part (3031) is arranged between the sleeve (302) and the collar (601), and a clamping part (3032) protrudes from the rear push plate (303). A clamping slot (6011) for the clamping part (3032) to be inserted into is formed on the collar (601).

6. The staple cartridge assembly specification recognition mechanism according to claim 1, characterized in that: A connection block (304) is arranged between the front push plate (301) and the sleeve (302). The connection block (304) includes a front connection section (3041) for connecting with the front push plate (301) and a rear connection section (3042) sleeved outside the core shaft (202) for pushing the sleeve (302) to move backward. A protruding part protrudes from the front connection section (3041), and a slot (3011) for the protruding part to be inserted into is formed on the front push plate (301).

7. The staple cartridge assembly specification identification mechanism according to claim 3, characterized in that: Above the installation block (7), there is a bracket (8). The middle part of the bottom of the bracket (8) protrudes, causing the two sides to be recessed to form a sliding groove (801). The contact point (5) is installed inside one of the sliding grooves (801). The elastic sheet (4) is provided with two contact segments (401). The two contact segments (401) correspond to the two sliding grooves (801) one by one, and each contact segment (401) is slidably arranged inside the sliding groove (801) corresponding to it.

8. The staple cartridge assembly specification identification mechanism according to claim 1, characterized in that: The cross-section of the mandrel (202) is a major arc bow structure, which has a plane (2021) that fits the front push plate (301).

9. The cartridge assembly specification identification mechanism according to claim 2, characterized in that: The connecting part includes two protruding bumps (704). A clamping groove (3033) for the bumps (704) to be inserted into is formed on the rear push plate (303).

10. An electric endoscopic stapler, characterized in that: It includes a staple cartridge assembly specification recognition mechanism according to any one of claims 1-9.

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