Gun barrel capable of automatically cutting elastic thread at one time and ligation device

Abstract

The invention relates to a gun barrel capable of automatically cutting an elastic thread at a time. The pushing pipe is inserted into the inner side of the gun barrel body; the sleeve is arranged on the inner side of the push pipe, and a connecting pipe is arranged on the sleeve; the thread cutter is rotationally arranged on the push pipe; the broach assembly is arranged on the inner side of the gun barrel body; the broaching tool assembly comprises a broaching tool rod and a broaching tool plate, and a pressing tool connecting rod is arranged at a notch in the head of the broaching tool rod and abuts against the thread cutting tool; the tail part of the broach rod is connected with a broach plate, and a bending part is arranged at the free end of the broach plate; the stay wire assembly is arranged on the inner side of the gun barrel body; the stay wire assembly comprises a stay wire rod and a stay wire plate, one end of the stay wire plate is provided with a buckle used for being connected with the stay wire rod, and the buckle is provided with a boss matched with the bent part; the knotted elastic thread sleeves the end part of the sleeve, and the knotted end of the elastic thread is fixedly connected with the stay wire rod. According to the automatic cutting device, the elastic thread can be automatically cut, operation is easy, and the consistency of the loop ligature tightening degree and the consistency of the thread breaking position can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a gun barrel and a ligature device for automatically cutting elastic lines at one time. Background Art

[0002] Hemorrhoids are a common anorectal disease that has a serious impact on the patient's quality of life and health. In recent years, with the continuous development of medical device technology, band ligation, as an informal surgical treatment method, has gradually been favored by clinicians in major hospitals.

[0003] There are currently two types of treatment options for hemorrhoids. One is surgical treatment, which is complicated to operate, takes a long time to recover, and can easily cause pain to patients during and after the operation. The other is to use band ligation, because the hemorrhoid band ligation device achieves the treatment purpose by causing ischemia and necrosis of hemorrhoidal tissue through band ligation, which improves the comfort of patients compared to traditional surgery. Since band ligation has a wide range of applicability and can be used for internal hemorrhoids, external hemorrhoids, and mixed hemorrhoids, many patients can accept it. For doctors, treatment can be completed more quickly and accurately, greatly shortening the treatment time. And because the band ligation uses an elastic elastic line that can be freely stretched and retracted according to the size of the hemorrhoidal tissue, it reduces the stimulation and damage to the hemorrhoidal tissue, thereby reducing the possibility of recurrence, which also means that patients can recover faster and reduce the extra burden caused by the recurrence of the disease.

[0004] The purpose of the hemorrhoid ligation device is to be easy to operate. However, the hemorrhoid ligation device currently still requires the doctor to manually cut after completing the ligation step, which requires the doctor to have certain skills and experience. If the operation is improper, it may increase the working time and difficulty; because the doctor needs to manually cut the elastic line, the hemorrhoid ligation device can only be used to treat external hemorrhoids, and surgery is still required for internal hemorrhoids, which greatly reduces the applicability of the ligation device.

[0005] Therefore, a structure capable of automatically cutting elastic wires is needed to solve the deficiencies in the prior art. Summary of the invention

[0006] To this end, the technical problem to be solved by the present invention is to overcome the problem of elastic line cutting during the use of the ligature in the prior art, and to provide a disposable barrel and a ligature for automatically cutting the elastic line, which can realize automatic cutting of the elastic line, and the line breaking action is automatically completed after tightening the line without the need for additional operations, which has the advantage of simple operation, and can achieve consistency in the ligature tightening degree and consistency in the line breaking position.

[0007] In a first aspect, in order to solve the above technical problems, the present invention provides a gun barrel for automatically cutting elastic wires at one time, comprising: A barrel body, which is detachably connected to the gun body; A push tube, which is inserted into the inner side of the barrel body; A sleeve, which is arranged on the inner side of the push tube, and the sleeve is provided with a connecting tube matching the negative pressure tube in the gun body; A thread cutter, rotatably arranged on the push tube; A broach assembly is arranged on the inner side of the barrel body and is used to control the rotation of the wire cutter; the broach assembly includes a broach rod and a broach plate, and is arranged in parallel with the push tube; a pressure connecting rod is arranged at the notch of the head of the broach rod, and the pressure connecting rod abuts against the wire cutter; the tail of the broach rod is connected to the broach plate, and a bending portion is arranged at the free end of the broach plate; A wire pulling assembly is arranged on the inner side of the barrel body and is arranged in parallel with the push tube; the wire pulling assembly includes a wire pulling rod and a wire pulling plate, the wire pulling plate and the wire pulling rod are arranged on the same horizontal line, and one end of the wire pulling plate is provided with a buckle for connecting with the wire pulling rod, and the buckle is provided with a boss adapted to the bending part, and when the wire pulling plate is separated from the wire pulling rod, the boss on the wire pulling plate is connected with the bending part of the broaching plate; The elastic line is sleeved on the end of the sleeve after being knotted, and the knotted end of the elastic line is fixedly connected to the pull rod.

[0008] In one embodiment of the present invention, boss hooks are provided on both sides of the thread cutter in this embodiment, and a rectangular hole is provided on the push tube. The boss hooks are embedded in the rectangular hole, so that the thread cutter can rotate.

[0009] In one embodiment of the present invention, a wire clamping groove is provided on the wire pulling rod, and the knotted end of the elastic wire is clamped on the wire clamping groove.

[0010] In one embodiment of the present invention, a card slot is provided on the wire drawing plate, and the card slot is connected to the pull-back button on the gun body.

[0011] In one embodiment of the present invention, a hook is provided on the push tube, and a second flange is provided on the barrel body. When the push tube is horizontally moved into position, the hook is clamped onto the second flange.

[0012] In one embodiment of the present invention, a safety cap is provided on the sleeve.

[0013] In one embodiment of the present invention, the wire cutter is in a hook shape and is provided with a U-shaped groove for passing the elastic wire to be cut.

[0014] In one embodiment of the present invention, the blade of the cutting knife is designed to be inclined or flush.

[0015] In one embodiment of the present invention, a groove structure is provided on the push tube for cooperating with the blade of the wire cutter to shear the elastic wire.

[0016] In a second aspect, in order to solve the above technical problem, the present invention discloses a ligation device, comprising a gun body and the gun barrel for automatically cutting elastic wires as described in the first aspect, wherein the gun body and the gun barrel body are connected via a gun barrel connector.

[0017] The above technical solution of the present invention has the following beneficial effects compared with the prior art: (1) The gun barrel for automatically cutting the elastic wire of the present invention realizes automatic tightening of the elastic wire by pulling the wire drawing plate backward. When the elastic wire is tightened to the right position, the knife rod is pulled to cause the cutting knife to cut the elastic wire. The wire breaking action is automatically completed after the wire is tightened, and no extra operation is required. It has the advantage of simple operation and can achieve consistency in the tightening degree of the ligature and the consistency in the wire breaking position.

[0018] (2) The barrel body of the present invention is disposable. When the instrument completes automatic ligation and wire cutting at one point, the wire drawing plate will be separated from the retraction key, and the entire front end assembly of the barrel body can be removed from the instrument. After replacing a new barrel body, the surgery can be continued. This solution can ensure that the cutting knife is also disposable, ensuring the sharpness of the cutting knife.

[0019] (3) The ligation device of the present invention can realize a hemorrhoid ligation and wire breaking structure. The ligation and wire breaking of hemorrhoids can be completed within 5 seconds by using the device for ligation surgery, which can effectively shorten the operation time, make the operation more convenient, and reduce the probability of complications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the structure of the gun barrel for automatically cutting the elastic line at one time in the present invention; Figure 2 for Figure 1 The barrel section of the disposable automatic cutting elastic line shown; Figure 3 for Figure 1 An exploded view of the barrel of a disposable automatic elastic wire cutter is shown; Figure 4 It is a structural schematic diagram of the push pipe in the present invention; Figure 5 for Figure 4 A partial schematic diagram of the end of the middle thrust tube; Figure 6It is a structural schematic diagram of the broach assembly in the present invention; Figure 7 It is a partial structural schematic diagram of the broach rod in the present invention; Figure 8 It is a schematic diagram of the structure of the wire drawing assembly in the present invention; Fig. 9 It is a structural schematic diagram of the wire cutting knife in the present invention; Fig.10 It is a schematic diagram of the structure of the groove structure in the push tube and the wire cutting knife in the present invention; Fig.11 It is a schematic diagram of the thread cutting knife installed in the push tube in the present invention; Fig.12 A cross-sectional view of a tangent cutter with an inclined blade according to the present invention installed in a push tube; Fig.13 A paving diagram showing a flat-edged thread cutter installed in a push tube in the present invention; Fig.14 It is a schematic diagram of the structure of the straight line cutting knife in the present invention; Fig.15 It is a schematic diagram of the structure of the cylinder and the push tube in the present invention; Fig.16 It is a schematic diagram of the structure of the arc-shaped cutting knife in the present invention; Fig.17 for Fig.16 Schematic diagram of the structure of the middle arc cutting knife, elastic line and cylinder; Fig.18 It is a schematic diagram of the internal structure of the ligation device in the present invention; DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention. Embodiment 1

[0023] Reference Figure 1-8As shown, the present invention provides a gun barrel for automatically cutting elastic wires at one time, comprising: a gun barrel body 9; a push tube 20, which is inserted and arranged on the inner side of the gun barrel body 9; a sleeve 10, which is arranged on the inner side of the push tube 20, and a connecting tube 101 is provided on the sleeve 10; a wire cutter 6, which is rotatably arranged on the push tube 20; a broaching assembly, which is arranged on the inner side of the gun barrel body 9 and is used to control the rotation of the wire cutter 6; the broaching assembly comprises a broaching rod 11 and a broaching plate 17, and is arranged in parallel with the push tube 20, and the head of the broaching rod 11 is A knife pressing connecting rod 21 is arranged at the notch 111 of the upper part, and the knife pressing connecting rod 21 is against the wire cutting knife 6; the tail of the knife pulling rod 11 is connected to the knife pulling plate 17, and the free end of the knife pulling plate 17 is provided with a bending portion 171; a wire pulling assembly is arranged on the inner side of the barrel body 9 and is arranged parallel to the push tube 20; the wire pulling assembly includes a wire pulling rod 5 and a wire pulling plate 19, and the wire pulling plate 19 and the wire pulling rod 15 are arranged on the same horizontal line, and one end of the wire pulling plate 19 is provided with a buckle 192 for connecting with the wire pulling rod, and the buckle 192 A boss 193 adapted to the bending portion 171 is provided on it. When the pulling plate 19 is separated from the pulling rod 5, the boss 193 on the pulling plate 19 is connected to the bending portion 171 of the broaching plate 17; the elastic line 4 is knotted and sleeved on the end of the sleeve 10, and the knotted end of the elastic line 4 is fixedly connected to the pulling rod 5.

[0024] like Fig. 9 As shown, in this embodiment, boss hooks 6b are provided on both sides of the thread cutter 6, and a rectangular hole 3c is provided on the push tube 20. The boss hooks 6b are embedded in the rectangular hole 3c, so that the thread cutter 6 can rotate.

[0025] Furthermore, the wire pulling rod 5 is provided with a wire clamping groove 51 , and the knotted end of the elastic wire 4 is clamped in the wire clamping groove 51 .

[0026] Furthermore, a slot 191 is provided on the wire drawing plate 19 , and the slot 191 is connected to the gun body 1 .

[0027] In this embodiment, the push tube 20 is provided with a hook 202 , and the barrel body 9 is provided with a second flange 91 . When the push tube 20 is horizontally moved into position, the hook 202 is clamped onto the second flange 91 .

[0028] Furthermore, a safety cap 2 is provided on the sleeve 10 .

[0029] In this embodiment, the wire cutting knife 2 is in the shape of a hook, and the blade of the cutting knife 6 is designed to be inclined. The wire cutting knife 2 is provided with a U-shaped groove 6a for passing the elastic wire 4 to be cut.

[0030] like Fig.10As shown, the push tube 20 is provided with a groove structure 204 for cooperating with the blade of the wire cutting knife 6 to shear the elastic wire 4 .

[0031] like Fig.11 As shown, a protrusion 3d is provided on the push tube 20 along the moving direction of the cutting knife 6. The purpose of this design is to better imitate the cutting method of scissors and achieve 100% cutting of the elastic line 4.

[0032] The cutting knife 6 is installed in an embedded manner. A rectangular hole 3c is dug out on the inner wall of the push tube 20. One end of the cutting edge of the cutting knife 6 is first placed in the rectangular hole 3c. Then, one side of the cutting knife U-shaped groove 6a is lifted to allow the cutting knife 6 to be inserted into the rectangular hole 3c. The boss hooks 6b on both sides of the cutting knife 6 are hung in the rectangular hole 3c on the inner wall 3b of the push tube. Fig.12 shown. Embodiment 2

[0033] Based on the gun barrel for automatically cutting elastic lines in Example 1, the cutting knife 6 can be designed as a flat blade structure, that is, the left and right ends of the blade are flush and not tilted. The other structures are still consistent with the structure of the cutting knife 6 in Example 1. The installation method is still embedded. The boss hooks 6b on both sides of the cutting knife 6 are hung in the rectangular holes 3c of the push tube 20. The design of the raised portion 3b is cancelled in the cutting knife space at the bottom of the push tube 20, and the outer wall 3a of the push tube is used as a support for the cutting knife 6 to cut the elastic line, as shown in Figure 13. Embodiment 3

[0034] The knife pressing connecting rod 21 is made into a straight line cutting knife 30, such as Fig.14 As shown, the original cutting knife 6 is removed, and the rectangular hole 3c in the push tube 20 is filled, and a cylinder 3e is made below the guide groove 203, as shown in FIG. Fig.15 As shown, the elastic wire 4 is passed through the bottom of the cylinder 3e. After the elastic wire 4 is stretched, the puller rod 11 drives the linear cutting knife 30 to move along the guide groove 203. During the movement, the linear cutting knife 30 cuts off the elastic wire 4 in the stretched state. Embodiment 4

[0035] The knife pressing connecting rod 21 is made into a design such as Fig.16 The arc-shaped cutting knife shown in the figure cuts into the cutting edge groove 31 along the cutting edge direction at the middle position of the blade, so that the elastic line 4 breaks during the cutting process. Fig.17 As shown, a schematic diagram of the elastic wire 4 is shown. Embodiment 5

[0036] The invention discloses a ligature device, comprising a gun barrel for automatically cutting elastic lines and a gun body in the first embodiment, wherein the gun barrel body is connected to the gun body through a gun barrel connecting piece.

[0037] like Fig.18 As shown, the barrel of the gun that automatically cuts the elastic line in this embodiment is installed on the gun body. During specific use, the safety cap 2 is removed from the sleeve 10, and the safety cap 2 must be removed before pulling the trigger 8. After pulling the trigger 8, the pull-back button 12 will drive the wire drawing rod 5 to stretch the elastic line 4 backward, and at the same time, the push tube 20 will push the elastic line 4 to slide down from the outer wall of the end of the sleeve 10 and be tied around the root of the hemorrhoid tissue. When the elastic line 4 is stretched to the specified position, the knife pulling rod 11 will drive the knife pressing connecting rod 21 to move in the guide groove 203, and push the wire cutting knife 6 to rotate during the movement, so that the wire cutting knife 6 will shear the elastic line 4 at the raised portion 3d in the cutting knife space during the rotation, thereby cutting off the elastic line 4 passing through the U-shaped groove 6a of the cutting knife.

[0038] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A barrel for automatically cutting elastic lines at one time, characterized in that: include: Barrel body; A push tube, which is inserted into the inner side of the barrel body; A sleeve, which is arranged on the inner side of the push tube, and a connecting pipe is provided on the sleeve; A thread cutter, rotatably arranged on the push tube; A broach assembly is arranged on the inner side of the barrel body and is used to control the rotation of the wire cutter; the broach assembly includes a broach rod and a broach plate, and is arranged in parallel with the push tube; a pressure connecting rod is arranged at the notch of the head of the broach rod, and the pressure connecting rod abuts against the wire cutter; the tail of the broach rod is connected to the broach plate, and a bending portion is arranged at the free end of the broach plate; A wire pulling assembly is arranged on the inner side of the barrel body and is arranged in parallel with the push tube; the wire pulling assembly includes a wire pulling rod and a wire pulling plate, the wire pulling plate and the wire pulling rod are arranged on the same horizontal line, and one end of the wire pulling plate is provided with a buckle for connecting with the wire pulling rod, and the buckle is provided with a boss adapted to the bending part, and when the wire pulling plate is separated from the wire pulling rod, the boss on the wire pulling plate is connected with the bending part of the broaching plate; The elastic line is sleeved on the end of the sleeve after being knotted, and the knotted end of the elastic line is fixedly connected to the pull rod.

2. The disposable gun barrel for automatically cutting elastic wire according to claim 1, characterized in that: Boss hooks are arranged on both sides of the thread cutter, and a rectangular hole is arranged on the push tube. The boss hooks are embedded in the rectangular hole, so that the thread cutter can perform rotational movement.

3. The disposable gun barrel for automatically cutting elastic wire according to claim 1, characterized in that: The wire pulling rod is provided with a wire clamping groove, and the knotted end of the elastic wire is clamped in the wire clamping groove.

4. The disposable gun barrel for automatically cutting elastic wire according to claim 3, characterized in that: The wire drawing plate is provided with a slot, and the slot is connected to a pull-back button on the gun body.

5. The disposable gun barrel for automatically cutting elastic wire according to claim 1, characterized in that: The push tube is provided with a hook, and the barrel body is provided with a second flange. When the push tube is horizontally moved into position, the hook is clamped on the second flange.

6. The disposable gun barrel for automatically cutting elastic wire according to claim 1, characterized in that: A safety cap is arranged on the sleeve.

7. The disposable gun barrel for automatically cutting elastic wire according to claim 1, characterized in that: The wire cutter is in the shape of a hook and is provided with a U-shaped groove for passing the elastic wire to be cut.

8. The disposable gun barrel for automatically cutting elastic wire according to claim 7, characterized in that: The blade of the cutting knife is designed to be inclined or flush.

9. The disposable gun barrel for automatically cutting elastic wire according to claim 7, characterized in that: The push tube is provided with a groove structure for cooperating with the blade of the wire cutter to shear the elastic wire.

10. A ligation device, characterized in that: It comprises a gun body and a gun barrel for automatically cutting elastic lines as claimed in any one of claims 1 to 9, wherein the gun body and the gun barrel body are connected via a gun barrel connector.

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