Needle box dismounting and mounting device for stitching instrument and endoscope stitching instrument

Abstract

The invention relates to the technical field of medical instruments, in particular to a needle box dismounting and mounting device for a stitching instrument and the endoscope stitching instrument, and the needle box dismounting and mounting device and the endoscope stitching instrument can meet the working requirements of the endoscope stitching instrument and achieve rapid matched dismounting and mounting of a needle box and a needle bin. The needle box is formed by buckling a needle box upper cover (2) and a needle box lower cover (1), a needle box opening (D-1) is formed in the rear end of the needle box, a needle box containing cavity is formed in the needle box, the needle box containing cavity is arranged in the length direction of the needle box and communicated with the needle box opening (D-1), a needle box or needle bin disassembling and assembling mechanism is further arranged on the needle box, and the needle box opening (D-1) is communicated with the needle box opening (D-1). The needle box or needle bin disassembling and assembling mechanism comprises a needle box ejector pin assembly and a needle box ejector rod assembly, and the needle box ejector pin assembly and the needle box ejector rod assembly are arranged on the two sides of the needle box containing cavity respectively.

Description

Technical field:

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

[0002] In endoscopic surgery, an endoscopic suturing device is usually used to suture the wound, which includes a gun body, a needle bin and a needle magazine component. When in use, the rear end of the needle bin is connected to the front end of the gun body, and the needle bin is connected with the needle magazine component. Through the connection between the needle bin and the needle magazine component, the release of the suture needle or suture thread can be achieved, thereby completing the suturing. During use, the connection between the needle magazine and the needle magazine should correspond accurately, and the disassembly and assembly are simple. If the docking and disassembly work of the needle magazine and the needle magazine is completed by medical staff alone, it is easy to cause accidents such as poor docking of the needle magazine, difficulty in disassembly of the needle magazine and the needle magazine, or the suture needle in the needle magazine stabbing 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 coordination and disassembly of a needle magazine and a needle bin.

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

[0005] A needle magazine disassembly and assembly device for a suturing device, comprising a needle magazine box matched with the needle magazine, characterized in that the needle magazine box is formed by a needle magazine upper cover (2) and a needle magazine lower cover (1) being buckled together, a needle magazine opening (D-1) being provided at the rear end of the needle magazine box, a needle magazine accommodating chamber being provided in the needle magazine box, the needle magazine accommodating chamber being arranged along the length direction of the needle magazine box and being communicated with the needle magazine opening (D-1), a needle magazine or needle magazine disassembly and assembly mechanism being further provided on the needle magazine box, the needle magazine or needle magazine disassembly and assembly mechanism comprising 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 being respectively arranged at two 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 magazine ejector pin (4) is arranged in a direction perpendicular to the central axis of the needle magazine accommodating chamber, and a pin ejector spring (7) is sleeved on the pin rod, so that when the pin ejector button (4-1) is pressed, the end of the pin rod approaches and enters the needle magazine accommodating chamber, and when the pin ejector button (4-1) is released, the pin ejector spring (7) pushes the needle magazine ejector pin (4) away from the needle magazine accommodating chamber; the needle magazine ejector pin assembly is provided with a needle magazine ejector pin (5) and a pin ejector spring (8), the needle magazine ejector pin (5) comprises a pin ejector button (5-4) located outside the other side wall of the needle magazine box, and a pin ejector ramp 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 accommodating chamber, the pin ejector spring (8) is located in the needle magazine box and abuts against the needle magazine ejector pin (5) to drive the pin ejector ramp block (5-1) away from the upper surface of the needle magazine in the needle magazine accommodating chamber when the pin ejector 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 a 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 case upper cover (2) and the inner wall of the needle case lower cover (1) of the needle case box of the present invention are respectively provided with grooves corresponding to the needle case push pin (4) and the needle case push rod (5), so as to guide the movement trajectory of the needle case push pin (4) or the needle case push rod (5) located inside the needle case box. Furthermore, in order to improve the matching stability between the needle case push rod (5) and the push rod spring (8), the needle case push rod (5) also includes a spring guide column, which is arranged in the needle case box and matches with the push rod spring (8).

[0008] In order to ensure the reliability of the push rod slope block (5-1) in the needle magazine push rod (5) (i.e., stably insert the push rod into the upper part of the needle magazine along the side of the needle magazine accommodating cavity or withdraw to the side of the needle magazine accommodating cavity), the present invention provides two push rod spring guide pillars symmetrical to each other in the needle magazine push rod (5), and correspondingly provides two push rod springs (8) respectively sleeved on the two push rod spring guide pillars, and push rod guide grooves matching the two push rod spring guide pillars and their corresponding push rod springs are respectively provided on 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, thereby limiting the movement trajectory of the two push rod spring guide pillars and the push rod spring, so that when the push rod button (5-4) is pressed, the end wedge-shaped body of the push rod slope 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 with 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 also 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 push pin (4) and the push rod end of the needle magazine push 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 fitting 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 bin, the engaging boss is fastened with the engaging groove to realize the connection between the rear end of the needle magazine and the needle bin; further, 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, and 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 engaging grooves and engaging bosses. When the needle magazine and the needle bin 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 bin pull block (B-1) and the upper surface of the needle magazine (A) to detach the engaging groove and engaging boss that match the needle bin pull block (B-1) and the upper surface of the needle magazine (A) or to facilitate the two to be pushed and locked.

[0010] The needle magazine box of the present invention is further provided with a suture accommodating chamber, and the suture accommodating chamber 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 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. When in use, the suture is wound on 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] Attached Figure 1 It is a schematic diagram of the assembly structure of the endoscopic stapler of the present invention.

[0014] Attached Figure 2 It is a schematic diagram of the needle bin and the needle magazine before assembly in the present invention.

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

[0016] Attached Figure 4 It is a schematic diagram of the state in which the needle cartridge is placed in the needle cartridge box in the present invention.

[0017] Attached Figure 5 is a schematic diagram of the structure of the needle box in 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 box at a second angle.

[0018] Attached Figure 6 It is a schematic diagram of the exploded structure of the needle magazine box in the present invention.

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

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

[0021] Attached Fig. 9 FIG. 1 is a schematic diagram of a structure of a needle case lower cover of a needle case box of the present invention, wherein Fig. 9 In the figure a is a top view. Fig. 9 Figure b is a schematic diagram of the second angle. Fig. 9 Figure c is a schematic diagram from the third angle.

[0022] Attached Fig.10 It is a schematic diagram of the matching state of the needle magazine box and the needle magazine in the present invention.

[0023] Attached Fig.11 It is a schematic diagram of the matching state of the needle magazine box, the needle magazine and the needle bin in the present invention.

[0024] Attached Fig.12 For attachment Fig.11 Schematic diagram from another angle.

[0025] Attached Fig.13 It is a schematic diagram of the suture thread lead-out state in the working state of the present invention.

[0026] Attached Fig.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 suture instrument, D-1 needle box mouth; 1 needle box lower cover, 1-1 suture thread winding column, 1-2 needle box positioning column, 1 -3 lower cover push rod slot, 1-4 lower cover push pin slot, 2 needle magazine upper cover, 2-1 upper cover push rod slot, 2-2 upper cover push pin slot, 3 needle magazine upper cover, 4 needle magazine push pin, 4-1 push pin button, 5 needle magazine push rod, 5-1 push rod ramp block, 5-2 push rod cylindrical pin, 5-3 push rod spring guide column, 5-4 push rod button, 6 needle magazine lower cover, 6-1 lower cover vent hole, 7 push pin spring, 8 push rod spring, 9 suture line. Specific implementation method:

[0028] The present invention will be further described below in conjunction with 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 put into 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 put into 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 put into the lower cover ejector groove 1-4 and the upper cover ejector groove 2-2, the needle magazine lower cover 1 is buckled with the needle magazine upper cover 2, 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 (i.e., the needle cartridge accommodating cavity) of the needle cartridge lower cover 1. When the needle cartridge A is placed in the needle cartridge accommodating cavity of the needle cartridge box, the needle cartridge arc groove A-5 at the front end of the needle cartridge A is close to the needle cartridge positioning column 1-2 in the needle cartridge box. 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 leg, and the ejector cylindrical pin 5-2 is aligned with the edge of the left button A-3 of the needle cartridge leg.

[0032] In this example, the needle box is further provided with a suture accommodating cavity, and the suture 9 in the needle box is stored by winding the suture winding column 1-1 in the needle box lower cover 1, and the needle box lower cover 6 can seal the suture 9 in the needle box A, and the needle box lower cover 6 is provided with a lower cover vent hole 6, which is convenient for sterilizing the needle box A and the suture 9;

[0033] In this example, when the needle magazine is installed, the needle magazine B is inserted 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 can be heard because the needle magazine legs have a certain elasticity (the left and right legs of the needle magazine here can be made of metal or other materials with a 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 rod button 5-4 of the needle magazine ejector rod 5. The ejector rod spring guide column 5-3 on the needle magazine ejector rod 5 will overcome the elastic force of the ejector rod spring 8 and move inward along the ejector rod groove 2-1 of the upper cover and the ejector rod groove 1-3 of the lower cover. The needle magazine ejector 5 is provided with an ejector ramp block 5-1, which will move to between the needle magazine pull block B-1 and the needle magazine A. The inclined surface structure on the ejector ramp block 5-1 will support the needle magazine pull block B-1. After being supported, under the action of the spring force of the pull block spring B-3, the needle magazine 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 5 will return to their original positions under the action of the spring force. After the ejector ramp block 5-1 returns to its original position, the needle magazine pull block boss B-1-1 on the needle magazine 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. Fig.13 As shown;

[0034] When taking out the needle magazine, insert needle magazine A and needle magazine B into the needle magazine through the insertion port D-1 of the needle magazine, press the push pin button 4-1 of the needle magazine push pin 4 and the push rod button 5-4 of the needle magazine push rod 5 with the thumb and index finger at the same time, the push rod spring guide column 5-3 on the needle magazine push rod 5 will overcome the elastic force of the push rod spring 8 and move inward along the upper cover push rod groove 2-1 and the lower cover push rod groove 1-3, the needle magazine push pin 4 overcomes the spring elastic force of the push pin spring 7 and moves inward along the upper cover push pin groove 2-2 and the lower cover push pin groove 1-4, the needle magazine push rod 5 is provided with a push rod ramp block 5-1, which will move to between the needle magazine pull block B-1 and the needle magazine A, and the push rod ramp The inclined surface structure on the slope block 5-1 will support the needle bin pull block B-1. After being supported, the needle bin pull block boss B-1-1 can be disengaged from the needle magazine cover groove A-1. At the same time, the push rod cylindrical pin 5-2 is aligned with the edge of the left button A-3 of the needle magazine leg, and the top of the needle magazine push pin 4 is aligned with the edge of the right button A-4 of the needle magazine leg. The needle magazine leg boss A-2 is disengaged from the needle bin groove B-2 by pressing, and the needle magazine box is pulled outward. The push rod cylindrical pin 5-2 and the needle magazine push pin 4 can push the left button A-3 and the right button A-4 of the needle magazine leg to disengage the needle magazine A in the needle magazine box from the needle bin B.

[0035] 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.

Claims

1. A needle magazine disassembly and assembly device for a suturing device, provided with a needle magazine box matching with the needle magazine, characterized in that: The needle magazine box is formed by a needle magazine upper cover (2) and a needle magazine lower cover (1) that are 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. 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 in the needle magazine box. The pin rod is arranged in a direction perpendicular to the central axis of the needle magazine accommodating chamber. 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) comprises 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 accommodating cavity. The ejector pin spring (8) is located in the needle magazine box and abuts against the needle magazine ejector pin (5) so as to drive the ejector pin slope block (5-1) away from the upper surface of the needle magazine in the needle magazine accommodating cavity when the ejector pin button (5-4) is released.

2. The needle magazine disassembly and assembly device for a stapler according to claim 1, characterized in that: The rear end of the needle box accommodating cavity in the needle box is a 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.

3. The needle magazine disassembly and assembly device for a stapler according to claim 1, characterized in that: The inner walls of the needle case upper cover (2) and the needle case lower cover (1) of the needle case box are respectively provided with grooves corresponding to the needle case top pin (4) and the needle case top rod (5), so as to guide the movement trajectory of the needle case top pin (4) or the needle case top rod (5) located inside the needle case box.

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

5. The needle magazine disassembly and assembly device for a stapler according to claim 1, characterized in that: 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 push rod ramp block (5-1) above the needle magazine along the side of the needle magazine accommodating cavity or withdraw it 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. Push rod guide grooves matching the two push rod spring guide pillars and their corresponding push rod springs are respectively provided on 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, thereby limiting the movement trajectory of the two push rod spring guide pillars and the push rod spring, 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.

6. The needle magazine disassembly and assembly device for a stapler according to claim 1, characterized in that: The upper surface of the needle box is provided with a needle box cover plate groove (A-1) matched with the front end of the needle box, and the rear end of the needle box (A) is provided with a symmetrically arranged and elastic left leg and a right leg of the needle box, and the left leg and the right leg of the needle box form a U-shaped rear end of the needle box, and the outer sides of the left leg and the right leg of the needle box are respectively provided with a needle box left leg button and a needle box right leg button for pressing the left leg or the right leg of the needle box along the outer side to deform the left leg or the right leg of the needle box. When the needle magazine is placed in the needle magazine accommodating cavity of the needle magazine box, the button of the left leg of the needle magazine and the button of the right leg 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 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 matching 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 and assembly 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, and the needle bin pull block (B-1) is installed on the needle bin via a pull block spring (B-3), and the lower side of the needle bin pull block (B-1) and the upper surface of the needle magazine (A) are provided with matching fitting grooves and fitting bosses, and when the needle magazine and the needle bin 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 bin pull block (B-1) and the upper surface of the needle magazine (A), so as to detach the fitting grooves and fitting bosses matching the needle bin pull block (B-1) and the upper surface of the needle magazine (A) or facilitate the two to be pushed and locked.

8. The needle magazine disassembly and assembly device for a stapler according to claim 1, characterized in that: A suture accommodating chamber is also provided in the needle magazine box, and 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 disassembly and assembly device for a stapler according to claim 8, characterized in that: A suture winding column is arranged in the suture accommodating cavity, and the suture is wound on the suture winding column. An air vent array conforming to the outer contour of the suture winding column is correspondingly arranged on the bottom plate of the needle magazine box.

10. An endoscopic stapler, comprising a stapler gun body, a needle magazine, a needle box, and a stapler needle box disassembly and assembly device as described in any one of claims 1 to 9, 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.

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