Nail bin assembly for disposable endoscope cutting anastomat

Abstract

A positioning assembly is arranged between a nail bin and a nail bin seat, the rear end of the nail bin is connected with the rear end of the nail bin seat through a clamping assembly, the front end of the nail bin is connected with the front end of the nail bin seat through a locking assembly, a plurality of protruding parts are oppositely arranged on the two sides of a tissue contact surface on the nail bin, and the protruding parts are connected with the nail bin seat through a locking assembly. The two sides of the tissue contact face are each provided with two elastic attaching pieces. The positioning assembly, the clamping assembly and the locking assembly are arranged, so that the nail bin and the nail bin seat are quickly mounted and dismounted, and the operation is simple and convenient; the protruding part is arranged on the tissue contact surface, so that the friction force of the nail bin is increased, and the situations of slippage and overflow of the tissue are reduced; the elastic attaching piece is arranged on the tissue contact face, the adaptability of the nail bin assembly and the tissue is improved, damage to the tissue is reduced, the adhesive force between the nail bin assembly and the surface of the tissue can be enhanced through the adsorption layer, and the positioning stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and specifically relates to a staple cartridge assembly for a disposable laparoscopic cutting stapler. Background Technique

[0002] The staple cartridge assembly for a disposable laparoscopic cutting stapler is a medical consumable specifically designed for laparoscopic surgery. As a part of the laparoscopic cutting stapler, it is mainly used for cutting and suturing tissues during minimally invasive surgery. The staple cartridge assembly is discarded after single use, aiming to ensure the sterility of surgical instruments, reduce the risk of cross-infection, and at the same time simplify the preparation work of surgical instruments and subsequent disinfection procedures.

[0003] The existing staple cartridge assemblies for disposable laparoscopic cutting staplers are inconvenient to install and disassemble, unable to meet the requirements of users for quick loading and unloading. Moreover, when the existing staple cartridge assemblies for disposable laparoscopic cutting staplers are anastomosing, the tissues will slip or overflow, resulting in poor anastomosis effect. Content of the Utility Model

[0004] The purpose of the utility model is to provide a staple cartridge assembly for a disposable laparoscopic cutting stapler to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A staple cartridge assembly for a disposable laparoscopic cutting stapler includes a staple cartridge and a staple cartridge seat. A positioning component is arranged between the staple cartridge and the staple cartridge seat. The rear ends of the staple cartridge and the staple cartridge seat are connected by a clamping component, and the front ends of the staple cartridge and the staple cartridge seat are connected by a locking component. On both sides of the tissue contact surface of the staple cartridge, a plurality of protruding parts are relatively arranged. The protruding parts are fixedly connected to the tissue contact surface. The height of the protruding parts gradually increases from the rear end to the front end, and the density of the protruding parts gradually becomes larger from the rear end to the front end. Two elastic fitting parts are respectively arranged on both sides of the tissue contact surface. The two elastic fitting parts are respectively arranged in the middle and at the front end of the tissue contact surface. The elastic fitting parts are slidably connected to the tissue contact surface. The elasticity of the elastic fitting part at the front end is less than the elasticity of the elastic fitting part in the middle.

[0007] As a further scheme of the utility model: The positioning component includes a positioning groove arranged on the bottom surface of the staple cartridge and a positioning plate fixedly connected in the staple cartridge seat. The positioning plate is slidably connected to the positioning groove.

[0008] As a further scheme of the utility model: The clamping component includes clamping blocks fixedly connected to the outer sides of two side walls of the staple cartridge and clamping grooves on the inner sides of two side walls of the staple cartridge seat. The clamping blocks and the clamping grooves are relatively arranged at the rear ends of the staple cartridge and the staple cartridge seat, and the clamping blocks and the clamping grooves are clamped and connected.

[0009] As a further solution of the utility model: a limiting box is fixedly connected inside the front end of the staple cartridge, and two opposite limiting grooves are provided on two side walls of the limiting box.

[0010] As a further solution of the utility model: the locking assembly includes a pressing plate, a pressing column, a sliding box, a sliding block, a connecting rod, a sliding rod, an arc-shaped groove, a return-shaped frame, a locking column, a elastic sheet, a first telescopic rod, a first spring and a locking groove. The lower end of the pressing plate is fixedly connected with the pressing column, the pressing column is slidably connected with the upper wall of the staple cartridge, the lower part of the pressing column is fixedly connected with the sliding box, the sliding box is arranged inside the limiting box and is slidably connected with the limiting box. Two sliding blocks are slidably connected to two opposite sides inside the sliding box, an elastic sheet is arranged between the two sliding blocks, two connecting rods are fixedly connected to the opposite sides of the two sliding blocks away from each other, the two connecting rods extend out of the sliding box and are slidably connected with the limiting grooves, the other ends of the two connecting rods are fixedly connected to the opposite sides of the two sliding rods, the two sliding rods are slidably connected inside the arc-shaped groove, a return-shaped frame is arranged outside the sliding rods, the inner wall of the return-shaped frame is slidably connected with the sliding rods, the outer wall of the return-shaped frame is slidably connected with the inner wall of the staple cartridge, the opposite sides of the two return-shaped frames are fixedly connected with the locking column, the locking column penetrates out of the staple cartridge and is slidably connected with the staple cartridge, the lower part of the sliding box is fixedly connected with the first telescopic rod, the other end of the first telescopic rod is fixedly connected to the bottom wall of the staple cartridge, a first spring is sleeved outside the first telescopic rod, and locking grooves are provided on the opposite sides of the inner sides of the two side walls of the staple cartridge seat, and the locking grooves are inserted and connected with the locking column.

[0011] As a further solution of the utility model: two handles are fixedly connected to two opposite side walls at the front end of the staple cartridge.

[0012] As a further solution of the utility model: the elastic fitting includes a sleeve, an inner cylinder, a second telescopic rod, a second spring and an adsorption layer. The sleeve is sleeved outside the inner cylinder, the inner wall of the sleeve is slidably connected with the inner cylinder, the outer wall of the sleeve is slidably connected with the staple cartridge, a second telescopic rod is arranged inside the sleeve and the inner cylinder, the upper end of the second telescopic rod is fixedly connected with the top wall of the sleeve, the lower end is fixedly connected with the bottom wall of the staple cartridge, a second spring is sleeved outside the second telescopic rod, and the upper end of the sleeve is fixedly connected with the adsorption layer.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. A staple cartridge assembly for a disposable endoscopic cutting stapler realizes the quick installation and disassembly of the staple cartridge and the staple cartridge seat by setting a positioning assembly, a clamping assembly and a locking assembly, is simple and convenient to operate, has a stable structure, and can be operated by a user with one hand;

[0015] 2. By arranging protrusions on the tissue contact surface, the friction force of the staple cartridge is increased, and the situation of tissue slipping and overflowing is reduced. By arranging protrusions with different densities and heights from the rear end to the front end of the staple cartridge, the overall stability of the staple cartridge is realized;

[0016] 3. By providing an elastic fitting on the tissue contact surface, the adaptability between the cartridge assembly and the tissue is improved, reducing damage to the tissue. Moreover, the adsorption layer can enhance the adhesion to the tissue surface and improve the stability of positioning. The elastic difference of the elastic fitting realizes the stability of the cartridge assembly. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a cartridge assembly for a disposable laparoscopic cutting stapler.

[0018] Figure 2 It is a schematic structural diagram of the cartridge in a cartridge assembly for a disposable laparoscopic cutting stapler.

[0019] Figure 3 It is a schematic structural diagram of the cartridge from another angle in a cartridge assembly for a disposable laparoscopic cutting stapler.

[0020] Figure 4 It is a schematic structural diagram of the cartridge base in a cartridge assembly for a disposable laparoscopic cutting stapler.

[0021] Figure 5 It is a sectional view of a cartridge assembly for a disposable laparoscopic cutting stapler along the A-A direction.

[0022] Figure 6 It is a schematic structural diagram of the elastic fitting in a cartridge assembly for a disposable laparoscopic cutting stapler.

[0023] In the figure: 1, cartridge; 11, pusher groove; 12, staple exit buckle; 13, tissue contact surface; 14, positioning groove; 15, limit box; 16, limit groove; 2, cartridge base; 21, positioning plate; 3, locking assembly; 31, pressing plate; 32, pressing column; 33, sliding box; 34, slider; 35, connecting rod; 36, sliding rod; 37, arc groove; 38, return frame; 39, locking column; 310, elastic sheet; 311, first telescopic rod; 312, first spring; 313, locking groove; 41, block; 42, clamping groove; 5, protrusion; 6, elastic fitting; 61, sleeve; 62, inner cylinder; 63, second telescopic rod; 64, second spring; 65, adsorption layer; 7, handle. Detailed Implementation Modes

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer toFigures 1 to 6 In the embodiment of the present utility model, a cartridge assembly for a disposable endoscopic cutting stapler includes a cartridge 1 and a cartridge seat 2. A positioning assembly is provided between the cartridge 1 and the cartridge seat 2. The rear ends of the cartridge 1 and the cartridge seat 2 are connected by a clamping assembly, and the front ends of the cartridge 1 and the cartridge seat 2 are connected by a locking assembly 3. On both sides of the tissue contact surface 13 of the cartridge 1, a plurality of protrusions 5 are oppositely provided. The protrusions 5 are fixedly connected to the tissue contact surface 13. The height of the protrusions 5 gradually increases from the rear end to the front end, and the density of the protrusions 5 gradually becomes larger from the rear end to the front end. On both sides of the tissue contact surface 13, two elastic fitting members 6 are respectively provided. The two elastic fitting members 6 are respectively arranged in the middle and at the front end of the tissue contact surface 13. The elastic fitting members 6 are slidably connected to the tissue contact surface 13. The elasticity of the elastic fitting member 6 at the front end is less than the elasticity of the elastic fitting member 6 in the middle.

[0026] When the disposable endoscopic cutting stapler is anastomosing, the human tissue is prone to slippage or overflow. Therefore, protrusions 5 and elastic fitting members 6 are provided on the tissue contact surface 13 to increase the friction force of the cartridge 1. However, the pressing force of the cartridge on the tissue at the front end is relatively small, resulting in the tissue at the front end of the cartridge 1 being prone to slippage. Therefore, the height of the protrusions 5 gradually increases from the rear end to the front end, and the density of the protrusions 5 gradually becomes larger from the rear end to the front end to increase the friction force at the front end of the cartridge 1 and ensure the stability of the anastomosis between the cartridge 1 and the tissue. In order to ensure that the disposable endoscopic cutting stapler can be anastomosed smoothly, the elasticity of the elastic fitting member 6 at the front end is less than the elasticity of the elastic fitting member 6 in the middle.

[0027] The positioning assembly includes a positioning groove 14 provided on the bottom surface of the cartridge 1 and a positioning plate 21 fixedly connected inside the cartridge seat 2. The positioning plate 21 is slidably connected to the positioning groove 14. When installing the cartridge 1 into the cartridge seat 2, the positioning plate 21 is inserted into the positioning groove 14, which plays a role in positioning the installation of the cartridge 1 and at the same time plays a role in guiding the movement of the cartridge 1, making the installation more convenient.

[0028] The clamping assembly includes clamping blocks 41 fixedly connected to the outer sides of the two side walls of the cartridge 1 and clamping grooves 42 on the inner sides of the two side walls of the cartridge seat 2. The clamping blocks 41 and the clamping grooves 42 are oppositely arranged at the rear ends of the cartridge 1 and the cartridge seat 2, and the clamping blocks 41 and the clamping grooves 42 are clamped and connected. When installing the cartridge 1, after the cartridge 1 is inserted into the cartridge seat 2, the clamping blocks 41 and the clamping grooves 42 at the rear end are clamped for pre-fixation.

[0029] Such as Figure 5As shown, a limit box 15 is fixedly connected inside the front end of the staple cartridge 1. Two opposite limit grooves 16 are provided on the two side walls of the limit box 15. The locking assembly 3 includes a pressing plate 31, a pressing column 32, a sliding box 33, a slider 34, a connecting rod 35, a sliding rod 36, an arc groove 37, a return frame 38, a locking column 39, a spring piece 310, a first telescopic rod 311, a first spring 312 and a locking groove 313. The lower end of the pressing plate 31 is fixedly connected with the pressing column 32. The pressing column 32 is slidably connected with the upper wall of the staple cartridge 1. The lower part of the pressing column 32 is fixedly connected with the sliding box 33. The sliding box 33 is arranged inside the limit box 15 and is slidably connected with the limit box 15. Two sliders 34 are slidably connected to the two opposite sides inside the sliding box 33. A spring piece 310 is arranged between the two sliders 34. The opposite sides of the two sliders 34 away from each other are fixedly connected with the connecting rod 35. The two connecting rods 35 extend out of the sliding box 33 and are slidably connected with the limit grooves 16. The other ends of the two connecting rods 35 are fixedly connected with the sliding rod 36. The two sliding rods 36 are slidably connected inside the arc groove 37. A return frame 38 is arranged outside the sliding rod 36. The inner wall of the return frame 38 is slidably connected with the sliding rod 36. The outer wall of the return frame 38 is slidably connected with the inner wall of the staple cartridge 1. The opposite sides of the two return frames 38 away from each other are fixedly connected with the locking column 39. The locking column 39 passes through the outside of the staple cartridge 1 and is slidably connected with the staple cartridge 1. The lower part of the sliding box 33 is fixedly connected with the first telescopic rod 311. The other end of the first telescopic rod 311 is fixedly connected to the bottom wall of the staple cartridge 1. A first spring 312 is sleeved outside the first telescopic rod 311. Locking grooves 313 are provided on the opposite sides of the inner sides of the two side walls of the staple cartridge base 2. The locking grooves 313 are inserted and connected with the locking columns 39.

[0030] When the staple cartridge 1 is installed, the locking assembly 3 at the front end of the staple cartridge 1 locks the staple cartridge 1. At this time, press the pressing plate 31 downward. The pressing plate 31 drives the pressing column 32 to move downward. The pressing column 32 drives the sliding box 33 to press the first telescopic rod 311 and the first spring 312 to move downward. The downward movement of the sliding box 33 drives the connecting rods 35 on both sides to move downward. The connecting rods 35 drive the sliding rod 36 to move downward and inward along the arc groove 37, driving the connected connecting rods 35 and the return frame 38 to move inward. The inward movement of the return frame 38 drives the locking column 39 to move inward into the staple cartridge 1, so that the staple cartridge 1 can be inserted into the staple cartridge base 2. After moving to the designated position, the rear end clamping assembly clamps the staple cartridge 1 and the staple cartridge base 2 for pre-fixation. Then, release the pressing on the pressing plate 31. Under the action of the first spring 312, the sliding box 33 moves upward, driving the connecting rod 35 to move upward. The connecting rod 35 drives the sliding rod 36 to move upward and outward in the arc groove 37, driving the locking column 39 to move outward and inserting it into the locking groove 313, thereby realizing the fixation of the staple cartridge 1. However, after use, when disassembling the staple cartridge 1, the steps are the same as the above operations. Press the pressing column 32 downward to release the locking of the two locking columns 39 with the locking grooves 313, so as to carry out disassembly. The operation is convenient and simple.

[0031] Two opposite handles 7 are fixedly connected to the two side walls at the front end of the staple cartridge 1. When disassembling the staple cartridge 1, the pressing plate 31 can be pressed by the thumb to unlock, and the index finger and middle finger are respectively placed under the handles 7 on both sides and lifted upward to remove the staple cartridge 1, facilitating the operation.

[0032] As Figure 6 shown, in order to make the anastomosis operation more accurate and reliable, the present utility model improves the positioning accuracy between the staple cartridge 1 and the tissue in contact in terms of structure. An elastic fitting 6 is provided on the staple cartridge 1. The elastic fitting 6 includes a sleeve 61, an inner cylinder 62, a second telescopic rod 63, a second spring 64 and an adsorption layer 65. The sleeve 61 is sleeved outside the inner cylinder 62. The inner wall of the sleeve 61 is slidably connected to the inner cylinder 62, and the outer wall of the sleeve 61 is slidably connected to the staple cartridge 1. A second telescopic rod 63 is provided in the sleeve 61 and the inner cylinder 62. The upper end of the second telescopic rod 63 is fixedly connected to the top wall of the sleeve 61, and the lower end is fixedly connected to the bottom wall of the staple cartridge 1. A second spring 64 is sleeved outside the second telescopic rod 63. The upper end of the sleeve 61 is fixedly connected to the adsorption layer 65. When the elastic fitting 6 contacts the tissue, it can naturally adjust its own shape according to the shape and pressure of the tissue, thereby achieving good adaptability. Moreover, this deformation is relatively gentle and can reduce the possible damage to the tissue. The adsorption layer 65 can enhance the adhesion to the tissue surface and improve the stability of positioning.

[0033] The working principle of the present utility model is as follows: When installing the staple cartridge 1, first use the positioning component for positioning. The positioning plate 21 in the staple cartridge seat 2 is inserted into the positioning groove 14 of the staple cartridge 1. The positioning component plays a role in positioning the installation of the staple cartridge 1 and also plays a role in guiding the movement of the staple cartridge 1. Then, the rear ends of the staple cartridge 1 and the staple cartridge seat 2 are clamped through the clamping component. Then, the front ends of the staple cartridge 1 and the staple cartridge seat 2 are locked through the locking component 3. The locking component 3 can realize the rapid installation and disassembly of the staple cartridge 1, facilitating the user to quickly replace it after use. The protruding portions 5 and the elastic fitting 6 are provided on the tissue contact surface 13, which can increase the friction of the staple cartridge 1 and prevent the tissue from slipping or overflowing during the anastomosis of the disposable endoscopic cutting stapler. The elastic difference of the elastic fitting 6 and the height and density differences of the protruding portions 5 ensure the stability of the anastomosis between the staple cartridge 1 and the tissue.

[0034] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A staple cartridge assembly for a disposable laparoscopic cutting stapler, comprising a staple cartridge (1) and a staple cartridge seat (2), characterized in that: A positioning assembly is provided between the nail magazine (1) and the nail magazine seat (2); the rear ends of the nail magazine (1) and the nail magazine seat (2) are connected via a clamping assembly; the front ends of the nail magazine (1) and the nail magazine seat (2) are connected via a locking assembly (3); a plurality of protrusions (5) are provided on opposite sides of a tissue contact surface (13) on the nail magazine (1); the protrusions (5) are fixedly connected to the tissue contact surface (13); the height of the protrusions (5) gradually increases from the rear end to the front end; and the density of the protrusions (5) gradually increases from the rear end to the front end; two elastic fitting parts (6) are provided on both sides of the tissue contact surface (13); the two elastic fitting parts (6) are respectively arranged at the middle and front ends of the tissue contact surface (13); the elastic fitting parts (6) are slidably connected to the tissue contact surface (13); the elasticity of the elastic fitting part (6) at the front end is less than the elasticity of the elastic fitting part (6) at the middle.

2. A disposable stapler cartridge assembly for a laparoscopic cutting stapler according to claim 1, characterized in that: The positioning assembly comprises a positioning groove (14) arranged on the bottom surface of the nail magazine (1) and a positioning plate (21) fixedly connected in the nail magazine seat (2), and the positioning plate (21) is slidably connected to the positioning groove (14).

3. A disposable stapler cartridge assembly for a laparoscopic cutting stapler according to claim 2, characterized in that: The clamping assembly comprises a clamping block (41) fixedly connected to the outer sides of two side walls of the nail magazine (1) and a clamping slot (42) on the inner sides of two side walls of the nail magazine seat (2); the clamping block (41) and the clamping slot (42) are arranged at the rear ends of the nail magazine (1) and the nail magazine seat (2) relative to each other; the clamping block (41) and the clamping slot (42) are clamped and connected.

4. A disposable stapler cartridge assembly for a laparoscopic cutting stapler according to claim 3, characterized in that: A limit box (15) is fixedly connected to the front end of the nail magazine (1), and two limit grooves (16) are oppositely arranged on two side walls of the limit box (15).

5. The disposable stapler cartridge assembly for a laparoscopic cutting stapler according to claim 4, characterized in that: The locking assembly (3) comprises a pressing plate (31), a pressing column (32), a sliding box (33), a sliding block (34), a connecting rod (35), a sliding rod (36), an arc groove (37), a circular frame (38), a locking column (39), a spring sheet (310), a first telescopic rod (311), a first spring (312) and a locking groove (313). The lower end of the pressing plate (31) is fixedly connected to the pressing column (32), and the pressing column (32) is connected to the upper wall of the nail magazine (1). Sliding connection, a sliding box (33) is fixedly connected below the pressing column (32), the sliding box (33) is arranged in the limit box (15) and is slidably connected to the limit box (15), two sliding blocks (34) are slidably connected on both sides of the sliding box (33), a spring sheet (310) is arranged between the two sliding blocks (34), and a connecting rod (35) is fixedly connected to the two sides of the two sliding blocks (34) away from each other, and the two connecting rods (35) extend into the sliding box (33) The two connecting rods (35) are fixedly connected to the other ends of the two connecting rods (35) with a slide rod (36), and the two slide rods (36) are relatively slidably connected to the arc groove (37). A return frame (38) is provided outside the slide rod (36), and the inner wall of the return frame (38) is slidably connected to the slide rod (36), and the outer wall of the return frame (38) is slidably connected to the inner wall of the nail magazine (1). The two return frames (38) are fixedly connected to a locking column (39) on the side away from each other. ), the locking column (39) passes out of the nail magazine (1) and is slidably connected to the nail magazine (1), a first telescopic rod (311) is fixedly connected to the bottom of the sliding box (33), the other end of the first telescopic rod (311) is fixedly connected to the bottom wall of the nail magazine (1), a first spring (312) is provided on the outer sleeve of the first telescopic rod (311), and locking grooves (313) are oppositely provided on the inner sides of the two side walls of the nail magazine seat (2), and the locking grooves (313) are plug-connected with the locking column (39).

6. A disposable stapler cartridge assembly for a laparoscopic cutting stapler according to claim 5, characterized in that: Two handles (7) are fixedly connected oppositely to the two side walls at the front end of the nail magazine (1).

7. The disposable stapler cartridge assembly for a laparoscopic cutting stapler according to claim 1, characterized in that: The elastic fitting member (6) comprises a sleeve (61), an inner sleeve (62), a second telescopic rod (63), a second spring (64) and an adsorption layer (65); the sleeve (61) is sleeved outside the inner sleeve (62); the inner wall of the sleeve (61) is slidably connected to the inner sleeve (62); the outer wall of the sleeve (61) is slidably connected to the nail magazine (1); a second telescopic rod (63) is arranged inside the sleeve (61) and the inner sleeve (62); the upper end of the second telescopic rod (63) is fixedly connected to the top wall of the sleeve (61); the lower end is fixedly connected to the bottom wall of the nail magazine (1); the second spring (64) is arranged outside the second telescopic rod (63); and the upper end of the sleeve (61) is fixedly connected to the adsorption layer (65).

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