Needle cartridge disassembling device for suture device and endoscope suture device

Abstract

The present application relates to the technical fields of medical devices, in particular to a needle magazine dismounting device for a suture device and an endoscope suture device, which can meet the working requirements of the endoscope suture device, and realize the quick cooperation and dismounting of the needle magazine and the needle magazine. The needle magazine box is matched with the needle magazine, characterized in that the needle magazine box is formed by the buckling of the upper cover (2) and the lower cover (1) of the needle magazine, the rear end of the needle magazine box is provided with a needle box opening (D-1), the needle magazine box is provided with a needle magazine accommodating cavity, the needle magazine accommodating cavity is arranged along the length direction of the needle magazine box and is communicated with the needle box opening (D-1), the needle magazine box is further provided with a needle magazine or needle magazine dismounting mechanism, the needle magazine or needle magazine dismounting mechanism comprises a needle magazine top pin assembly and a needle magazine top rod assembly, and the needle magazine top pin assembly and the needle magazine top rod assembly are arranged on the two sides of the needle magazine accommodating cavity respectively.

Description

Technical field:

[0001] The present invention relates to the technical field of medical devices, in particular to a needle magazine disassembly device for a stapler and an endoscopic stapler, which can meet the working requirements of an endoscopic stapler and realize the rapid assembly and disassembly of a needle magazine and a needle bin. Background technology:

[0002] During endoscopic surgery, an endoscopic suturing device is typically used to suture wounds. The device comprises a main gun body, a needle cartridge, and a needle cartridge assembly. During use, the rear end of the needle cartridge is connected to the front end of the gun body, and the needle cartridge and needle cartridge assembly are matingly connected. This mating connection between the needle cartridge and the cartridge assembly enables the release of a suture needle or suture thread, thereby completing the suturing process. During use, the needle cartridge and the cartridge assembly must be precisely connected and easily assembled and disassembled. If medical personnel are solely responsible for docking and disassembling the cartridge and the needle cartridge, accidents can easily occur, such as improper docking of the cartridge, difficulty in disassembling the cartridge and the needle cartridge, or the suture needle in the cartridge piercing the operator. Summary of the invention:

[0003] In view of the shortcomings and deficiencies in the prior art, the present invention proposes a needle magazine disassembly and assembly device for a stapler and an endoscopic stapler that can meet the working requirements of an endoscopic stapler and realize rapid assembly and disassembly of a needle magazine and a needle cartridge.

[0004] The present invention is achieved by the following measures:

[0005] The invention relates to a needle magazine disassembly and assembly device for a suturing device, which is provided with a needle magazine box matched with the needle magazine, and is characterized in that the needle magazine box is formed by a needle magazine upper cover (2) and a needle magazine lower cover (1) being fastened together, a needle magazine opening (D-1) is provided at the rear end of the needle magazine box, a needle magazine accommodating chamber is provided in the needle magazine box, the needle magazine accommodating chamber is arranged along the length direction of the needle magazine box and is communicated with the needle magazine opening (D-1), a needle magazine or needle magazine disassembly and assembly mechanism is also provided on the needle magazine box, the needle magazine or needle magazine disassembly and assembly mechanism includes a needle magazine ejector pin assembly and a needle magazine ejector rod assembly, the needle magazine ejector pin assembly and the needle magazine ejector rod assembly are respectively arranged on both sides of the needle magazine accommodating chamber, wherein a needle magazine ejector pin (4) and an ejector pin spring (7) are provided in the needle magazine ejector pin assembly, the needle magazine ejector pin (4) is composed of an ejector pin button (4-1) located outside a side wall of the needle magazine box and a pin rod located inside the needle magazine box, the pin rod The needle box is provided with a push pin spring (7) arranged in a direction perpendicular to the central axis of the needle box accommodating chamber, so that when the push pin button (4-1) is pressed, the end of the pin rod approaches and enters the needle box accommodating chamber, and when the push pin button (4-1) is released, the push pin spring (7) pushes the needle box push pin (4) away from the needle box accommodating chamber; the needle box push rod assembly is provided with a needle box push rod (5) and a push rod spring (8), the needle box push rod (5) includes a push rod button (5-4) located outside the other side wall of the needle box, and a push rod ramp block (5-1) located in the needle box and inserted into or withdrawn from the upper surface of the needle box along the side of the needle box accommodating chamber, the push rod spring (8) is located in the needle box and abuts against the needle box push rod (5) to drive the push rod ramp block (5-1) away from the upper surface of the needle box in the needle box accommodating chamber when the push rod button (5-4) is released.

[0006] The rear end of the needle box accommodating cavity in the needle box box of the present invention is the needle box opening (D-1), and the front end is provided with a needle box positioning column adapted to the front end of the needle box to facilitate rapid and accurate docking of the needle box with the needle box box.

[0007] The needle magazine upper cover (2) and the inner wall of the needle magazine lower cover (1) of the needle magazine box of the present invention are respectively provided with grooves corresponding to the needle magazine ejector pin (4) and the needle magazine ejector rod (5), so as to guide the movement trajectory of the needle magazine ejector pin (4) or the needle magazine ejector rod (5) located inside the needle magazine box. Furthermore, in order to improve the matching stability between the needle magazine ejector rod (5) and the ejector rod spring (8), the needle magazine ejector rod (5) also includes a spring guide column, which is arranged in the needle magazine box and matches the ejector rod spring (8).

[0008] In order to ensure the reliability of the push rod ramp block (5-1) in the needle magazine push rod (5) (i.e., stably inserting the push rod ramp block (5-1) above the needle magazine along the side of the needle magazine accommodating cavity or withdrawing it to the side of the needle magazine accommodating cavity), the needle magazine push rod (5) is provided with two push rod spring guide pillars symmetrical to each other, and two push rod springs (8) respectively sleeved on the two push rod spring guide pillars are provided. The inner wall of the needle magazine upper cover (2) and the inner wall of the needle magazine lower cover (1) of the needle magazine box are respectively provided with push rod guide grooves that match the two push rod spring guide pillars and their corresponding push rod springs, thereby limiting the movement trajectories of the two push rod spring guide pillars and the push rod springs, so that when the push rod button (5-4) is pressed, the end wedge-shaped body of the push rod ramp block (5-1) located in the needle magazine box is inserted into the upper surface of the needle magazine, specifically, inserted between the needle magazine and the front end component of the needle bin.

[0009] The upper surface of the needle magazine of the present invention is provided with a needle magazine cover groove (A-1) that matches the front end of the needle magazine, and the rear end of the needle magazine (A) is provided with a symmetrically arranged and elastic left leg and right leg of the needle magazine, and the left leg and the right leg of the needle magazine form a U-shaped rear end of the needle magazine, and the outer sides of the left leg and the right leg of the needle magazine are respectively provided with a needle magazine left leg button and a needle magazine right leg button for pressing the left leg or the right leg of the needle magazine along the outer side to deform the left leg or the right leg of the needle magazine. When the needle magazine is placed in the needle magazine accommodating cavity of the needle magazine box, the left leg button and the right leg button of the needle magazine are respectively opposite to the pin rod end of the needle magazine top pin (4) and the top rod end of the needle magazine top rod (5), and the outer sides of the ends of the left leg and the right leg of the needle magazine are respectively provided with a chimeric boss; the front inner part of the needle magazine The wall is provided with an engaging groove that matches the engaging boss. When the rear end of the needle magazine extends into the front part of the needle warehouse, the engaging boss is fastened with the engaging groove to realize the connection between the rear end of the needle magazine and the needle warehouse; further, the front end of the needle warehouse is also provided with a needle warehouse pull block (B-1) corresponding to the upper surface of the needle magazine, and the needle warehouse pull block (B-1) is installed on the needle warehouse via a pull block spring (B-3). The lower side of the needle warehouse pull block (B-1) and the upper surface of the needle magazine (A) are provided with matching engaging grooves and engaging bosses. When the needle magazine and the needle warehouse are placed in the needle magazine box, the end wedge-shaped body of the push rod slope block (5-1) is inserted into or withdrawn from between the needle warehouse pull block (B-1) and the upper surface of the needle magazine (A) to detach the needle warehouse pull block (B-1) and the engaging groove and engaging boss that match the upper surface of the needle magazine (A) or make the two easy to push and lock.

[0010] The needle magazine box of the present invention is further provided with a suture accommodating chamber, which is separated from the needle magazine accommodating chamber. Furthermore, a ventilation hole is provided at the bottom plate of the needle magazine box in the suture accommodating chamber to facilitate sterilization of the suture accommodating chamber. Furthermore, a suture winding column is provided in the suture accommodating chamber, and the suture is wound on the suture winding column. Preferably, an array of ventilation holes conforming to the outer contour of the suture winding column is provided on the bottom plate of the needle magazine box. When in use, the suture is wound around the winding column for storage. The purpose of providing the winding column is to prevent the suture from being knotted in the suture accommodating chamber, which is not conducive to the extraction of the suture. When suturing, the suture can be directly extracted from the suture accommodating chamber by pulling the suture needle.

[0011] The present invention also proposes an endoscopic stapler, which is provided with a stapler gun body, a needle magazine, a needle box and the stapler needle box disassembly and assembly device as described above, wherein the rear end of the needle magazine is connected to the stapler gun body, the needle magazine is connected to the needle box, and the front end of the needle box is placed into the needle box accommodating cavity along the needle box opening (D-1) of the stapler needle box disassembly and assembly device.

[0012] Compared with the prior art, the present invention has the following advantages: easy operation, the needle magazine can be installed and removed simply by pressing the ejector pin button and the ejector rod button, which significantly simplifies the installation and removal steps of the stapler needle magazine and improves the applicability, safety and reliability of the stapler. Description of the drawings:

[0013] Attachment Figure 1 It is a schematic diagram of the assembly structure of the endoscopic stapler of the present invention.

[0014] Attachment Figure 2 This is a schematic diagram of the needle bin and needle cartridge before assembly in the present invention.

[0015] Attachment Figure 3 It is a schematic structural diagram of a needle box in the present invention.

[0016] Attachment Figure 4 This is a schematic diagram of the needle cartridge being placed in the needle cartridge box according to the present invention.

[0017] Attachment Figure 5 This is a structural diagram of the needle box of the present invention, wherein Figure 5 Figure a is a schematic diagram of the needle box from the first angle. Figure 5 (b) is a schematic diagram of the needle magazine structure from a second angle.

[0018] Attachment Figure 6 Schematic diagram of the exploded structure of the needle magazine box in the present invention.

[0019] Attachment Figure 7 It is a structural schematic diagram of the needle magazine ejector in the present invention.

[0020] Attachment Figure 8 It is a structural schematic diagram of the upper cover of the needle box in the present invention.

[0021] Attachment Figure 9 This is a structural diagram of the lower cover of the needle magazine box of the present invention, wherein Figure 9 In the middle, a is a top view. Figure 9 b is a schematic diagram of the second angle, Figure 9 Figure c is a schematic diagram from the third angle.

[0022] Attachment Figure 10 This is a schematic diagram of the needle magazine box and the needle magazine in the present invention.

[0023] Attachment Figure 11 This is a schematic diagram of the needle magazine box, needle magazine and needle bin in the present invention.

[0024] Attachment Figure 12 For attachment Figure 11 Schematic diagram from another angle.

[0025] Attachment Figure 13 This is a schematic diagram of the suture thread lead-out state when the present invention is in working condition.

[0026] Attachment Figure 14 It is a schematic diagram of the internal structure of the needle magazine box of the present invention.

[0027] Figure numerals: A needle box, A-1 needle box cover slot, A-2 needle box leg boss, A-3 needle box leg left button, A-4 needle box leg right button, A-5 needle box arc slot, B needle bin, B-1 needle bin pull block, B-1-1 needle bin pull block boss, B-2 needle bin groove, B-3 pull block spring, C suturing instrument, D-1 needle box port; 1 needle box lower cover, 1-1 suture thread winding column, 1-2 needle box positioning column, 1 -3 lower cover ejector slot, 1-4 lower cover ejector pin slot, 2 needle magazine upper cover, 2-1 upper cover ejector slot, 2-2 upper cover ejector pin slot, 3 needle magazine upper cover, 4 needle magazine ejector pin, 4-1 ejector pin button, 5 needle magazine ejector, 5-1 ejector ramp block, 5-2 ejector cylindrical pin, 5-3 ejector spring guide column, 5-4 ejector button, 6 needle magazine lower cover, 6-1 lower cover vent hole, 7 ejector pin spring, 8 ejector spring, 9 suture line. Specific implementation method:

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Example:

[0030] This example provides a needle box installation and removal device for a stapler, as shown in the attached Figure 5 、 6As shown in , 8 and 9, the device is provided with a needle magazine lower cover 1, the ejector spring 8 cooperates with one side of the ejector cylindrical pin 5-2 of the needle magazine ejector 5 and is placed in the lower cover ejector groove 1-3 of the needle magazine lower cover 1, and the other side of the ejector cylindrical pin 5-2 is placed in the upper cover ejector groove 2-1 of the needle magazine upper cover 2, the needle magazine ejector pin 4 cooperates with the ejector spring 7 and is placed in the lower cover ejector groove 1-4 and the upper cover ejector groove 2-2, the needle magazine lower cover 1 and the needle magazine upper cover 2 are buckled together, the needle magazine lower cover 6 is buckled with the needle magazine lower cover 1, and the needle magazine upper cover 3 is buckled with the needle magazine upper cover 2;

[0031] In this example, the needle cartridge A is placed in the groove of the needle cartridge lower cover 1 (i.e., the needle cartridge accommodating cavity). When the needle cartridge A is placed in the needle cartridge accommodating cavity of the needle cartridge case, the needle cartridge arc groove A-5 at the front end of the needle cartridge A is in close contact with the needle cartridge positioning column 1-2 in the needle cartridge case. After placement, the top end of the needle cartridge ejector pin 4 is aligned with the edge of the right button A-4 of the needle cartridge support leg, and the ejector cylindrical pin 5-2 is aligned with the edge of the left button A-3 of the needle cartridge support leg.

[0032] In this example, the needle cartridge case is further provided with a suture accommodating cavity, and the suture 9 in the needle cartridge is stored by winding the suture winding column 1-1 in the needle cartridge lower cover 1, and the needle cartridge lower cover 6 can seal the suture 9 in the needle cartridge A. The needle cartridge lower cover 6 is provided with a lower cover vent 6 to facilitate sterilization of the needle cartridge A and the suture 9;

[0033] In this example, when installing the needle magazine, insert the needle magazine B into the needle magazine through the insertion port D-1. When the needle magazine leg boss A-2 is in place with the needle magazine groove B-2, a "click" sound will be heard due to the certain elasticity of the needle magazine legs (the left and right legs of the needle magazine here can be made of metal or other materials with certain elasticity). After hearing the sound, the thumb and index finger simultaneously press the ejector pin button 4-1 of the needle magazine ejector pin 4 and the ejector button 5-4 of the needle magazine ejector rod 5. The ejector spring guide column 5-3 on the needle magazine ejector rod 5 will overcome the elastic force of the ejector spring 8 and move inward along the ejector groove 2-1 of the upper cover and the ejector groove 1-3 of the lower cover. The needle magazine ejector rod 5 is provided with an ejector rod slope block 5-1, which will move to between the needle bin pull block B-1 and the needle magazine A. The inclined surface structure on the ejector rod slope block 5-1 will support the needle bin pull block B-1. After being supported, under the action of the spring force of the pull block spring B-3, the needle bin pull block B-1 will move forward a part. At this time, release the index finger and thumb, and the needle magazine ejector pin 4 and the needle magazine ejector rod 5 will return to their original positions under the action of the spring force. After the ejector rod slope block 5-1 returns to its original position, the needle bin pull block boss B-1-1 on the needle bin pull block B-1 is stuck in the needle magazine cover groove A-1. The needle magazine box is removed, and the suture thread 9 can be directly pulled out of the needle magazine box through the suture thread winding column 1-1. Figure 13 As shown;

[0034] When the needle cassette is taken out, the needle cassette A and the needle cartridge B are inserted into the needle box through the insertion of the needle box port D-1, the thumb and the index finger press the ejector pin button 4-1 of the needle cassette ejector pin 4 and the ejector rod button 5-4 of the needle cassette ejector rod 5 at the same time, the ejector rod spring guide column 5-3 on the ejector rod 5 will overcome the elastic force of the ejector rod spring 8, move inward along the upper cover ejector rod groove 2-1 and the lower cover ejector rod groove 1-3, the ejector pin 4 overcomes the spring force of the ejector pin spring 7, moves inward along the upper cover ejector pin groove 2-2 and the lower cover ejector pin groove 1-4, the ejector rod 5 is provided with an ejector rod slope block 5-1, which will move between the needle cartridge pull block B-1 and the needle cassette A, the slope structure on the ejector rod slope block 5-1 will support the needle cartridge pull block B-1-1, after supporting, the needle cartridge pull block B-1-1 can be separated from the needle cassette cover plate groove A-1, at the same time, the ejector rod cylindrical pin 5-2 is aligned with the edge of the needle cassette support leg left button A-3, the top end of the ejector pin 4 is aligned with the edge of the needle cassette support leg right button A-4, the needle cassette support leg boss A-2 is separated from the needle cartridge groove B-2 by pressing, and the needle cassette box is pulled outwards, the ejector rod cylindrical pin 5-2 and the ejector pin 4 can separate the needle cassette A and the needle cartridge B in the needle cassette box by pushing the needle cassette support leg left button A-3 and the needle cassette support leg right button A-4.

[0035] Compared with the prior art, the present application has the following advantages: simple operation, the installation and removal of the needle cassette can be realized by pressing the ejector pin button and the ejector rod button, which significantly simplifies the installation and removal steps of the suture needle cassette, and improves the applicability, safety and reliability of the suture device.

Claims

1. A needle magazine disassembly and assembly device for a suturing device, provided with a needle magazine box that matches the needle magazine, characterized in that: The needle magazine box is formed by the upper cover (2) of the needle magazine and the lower cover (1) of the needle magazine, and a needle magazine opening (D-1) is provided at the rear end of the needle magazine box. A needle magazine accommodating cavity is provided in the needle magazine box, and the needle magazine accommodating cavity is arranged along the length direction of the needle magazine box and is communicated with the needle magazine opening (D-1). The needle magazine box is also provided with a needle magazine or needle magazine disassembly and assembly mechanism, and the needle magazine or needle magazine disassembly and assembly mechanism includes a needle magazine ejector pin assembly and a needle magazine ejector rod assembly. The needle magazine ejector pin assembly and the needle magazine ejector rod assembly are respectively arranged on both sides of the needle magazine accommodating cavity, wherein a needle magazine ejector pin (4) and an ejector pin spring (7) are provided in the needle magazine ejector pin assembly. The needle magazine ejector pin (4) is composed of an ejector pin button (4-1) located outside a side wall of the needle magazine box and a pin rod located inside the needle magazine box. The pin rod is arranged in a direction perpendicular to the central axis of the needle magazine accommodating cavity. The needle magazine ejector pin assembly is provided with a needle magazine ejector pin (5) and an ejector pin spring (8). The needle magazine ejector pin (5) includes an ejector pin button (5-4) located outside the other side wall of the needle magazine box, and an ejector pin slope block (5-1) located in the needle magazine box and inserted into or withdrawn from the upper surface of the needle magazine along the side of the needle magazine chamber. The ejector pin spring (8) is located in the needle magazine box and abuts against the needle magazine ejector pin (5) to drive the ejector pin slope block (5-1) away from the upper surface of the needle magazine in the needle magazine chamber when the ejector pin button (5-4) is released. The rear end of the needle box (A) is provided with a symmetrical and elastic left and right legs. The outer sides of the left and right legs of the needle magazine are respectively provided with a needle magazine left leg button and a needle magazine right leg button for pressing the left or right leg of the needle magazine along the outer sides to deform the left or right leg of the needle magazine. When the needle magazine is placed in the needle magazine accommodating cavity of the needle magazine box, the left and right leg buttons of the needle magazine are respectively opposite to the pin rod end of the needle magazine eject pin (4) and the eject rod end of the needle magazine eject rod (5); When the push rod button (5-4) is pressed, the end wedge-shaped body of the push rod ramp block (5-1) located in the needle magazine box is inserted between the needle magazine and the front end component of the needle bin.

2. The needle magazine disassembly device for a stapler according to claim 1, characterized in that: The rear end of the needle magazine accommodating cavity in the needle magazine box is a needle magazine opening (D-1), and the front end is provided with a needle magazine positioning column adapted to the front end of the needle magazine to facilitate rapid and accurate docking of the needle magazine with the needle magazine box.

3. The needle magazine disassembly device for a stapler according to claim 1, wherein: Grooves corresponding to the needle magazine ejector pin (4) and the needle magazine ejector rod (5) are provided on the inner walls of the needle magazine upper cover (2) and the needle magazine lower cover (1) of the needle magazine box, respectively, so as to guide the movement trajectory of the needle magazine ejector pin (4) or the needle magazine ejector rod (5) located inside the needle magazine box.

4. The needle magazine disassembly device for a stapler according to claim 3, characterized in that: In order to improve the matching stability between the needle magazine ejector rod (5) and the ejector rod spring (8), the needle magazine ejector rod (5) further comprises a spring guide column, which is arranged in the needle magazine box and matches the ejector rod spring (8).

5. The needle magazine disassembly device for a stapler according to claim 1, wherein: In order to ensure the reliability of the push rod ramp block (5-1) in the needle magazine push rod (5), that is, to stably insert the needle magazine above the needle magazine along the side of the needle magazine accommodating cavity or withdraw to the side of the needle magazine accommodating cavity, two push rod spring guide pillars symmetrical to each other are provided in the needle magazine push rod (5), and two push rod springs (8) respectively sleeved on the two push rod spring guide pillars are provided. The inner wall of the needle magazine upper cover (2) and the inner wall of the needle magazine lower cover (1) of the needle magazine box are respectively provided with push rod guide grooves that match the two push rod spring guide pillars and their corresponding push rod springs, thereby limiting the movement trajectory of the two push rod spring guide pillars and the push rod springs.

6. The needle magazine disassembly device for a stapler according to claim 1, characterized in that: The upper surface of the needle magazine is provided with a needle magazine cover groove (A-1) that matches with the front end of the needle warehouse, the left leg of the needle magazine and the right leg of the needle magazine form a U-shaped rear end of the needle magazine, and the outer sides of the ends of the left leg of the needle magazine and the right leg of the needle magazine are respectively provided with an engaging boss; the front inner wall of the needle warehouse is provided with an engaging groove that matches with the engaging boss, and when the rear end of the needle magazine extends into the front of the needle warehouse, the engaging boss and the engaging groove are fastened to realize the connection between the rear end of the needle magazine and the needle warehouse.

7. The needle magazine disassembly device for a stapler according to claim 6, characterized in that: The front end of the needle bin is also provided with a needle bin pull block (B-1) corresponding to the upper surface of the needle magazine. The needle bin pull block (B-1) is installed on the needle bin via a pull block spring (B-3). The lower side of the needle bin pull block (B-1) and the upper surface of the needle magazine (A) are provided with matching interlocking grooves and interlocking bosses. When the needle magazine and the needle bin are placed in the needle magazine box, the end wedge of the push rod slope block (5-1) is inserted into or withdrawn from between the needle bin pull block (B-1) and the upper surface of the needle magazine (A) to detach the needle bin pull block (B-1) from the matching interlocking grooves and interlocking bosses on the upper surface of the needle magazine (A) or to facilitate the two to be pushed and locked.

8. The needle magazine disassembly device for a stapler according to claim 1, wherein: A suture accommodating chamber is also provided in the needle magazine box. The suture accommodating chamber is separated from the needle magazine accommodating chamber. A ventilation hole is provided at the bottom plate of the needle magazine box in the suture accommodating chamber to facilitate sterilization of the suture accommodating chamber.

9. The needle magazine assembling and disassembling device for a stapler according to claim 8, characterized in that: A suture winding column is provided in the suture accommodating cavity, and the suture is wound on the suture winding column. A ventilation hole array conforming to the outer contour of the suture winding column is correspondingly provided on the bottom plate of the needle magazine box.

10. An endoscopic suturing device comprising a suturing device gun body, a needle magazine, a needle cartridge, and a suturing device for assembling and disassembling a needle cartridge as claimed in any one of claims 1 to 9, wherein the rear end of the needle magazine is connected to the suturing device gun body, the needle magazine is connected to the needle cartridge, and the front end of the needle cartridge is placed into the needle cartridge accommodating cavity along the needle cartridge opening (D-1) of the suturing device for assembling and disassembling a needle cartridge.

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