Automatic ligation structure of ligation device

Abstract

The present invention provides an automatic ligation structure of a ligation device, comprising: a housing; a ring driving component, which can move along the front-to-back direction of the housing; a ring driving rack is provided on the outer surface of the ring driving component; a suction pipe is arranged inside the housing, and a push block is sleeved at the front end of the suction pipe, and the push block is connected to the front end of the ring driving component; a tension spring is arranged inside the housing, and the rear end position of the tension spring is fixed; a driving pull rod is connected to the front end of the tension spring, and a pull rod rack is also provided on the driving pull rod; a gear is movably arranged inside the housing and is located between the pull rod rack and the ring driving rack; a tightening pull rod can move along the front-to-back direction of the housing; an elastic ligation line, and a slipknot is tied at the front end of the ligation line to form a ring set, and the ring set is sleeved at the front end of the suction pipe; a trigger is movably installed inside the housing. The present invention controls the steps of sleeve removal of hemorrhoids and tightening of hemorrhoids with a ring set by a trigger, so that the operation process becomes quick.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to an automatic ligation structure of a ligation device. Background Art

[0002] The automatic hemorrhoid ligation is to use a special automatic hemorrhoid ligation device to put a special rubber ring or elastic coil on the base of the hemorrhoid or the mucosa on the hemorrhoid at an appropriate position 1.5 to 3 cm above the tooth line, and block the blood supply of the hemorrhoid or reduce venous reflux by tightening and strangling, reduce the congestion and hypertrophy of the hemorrhoid or blood stasis, so that it will produce ischemia, atrophy, and necrosis, and the ligated tissue will gradually fall off, and the wound tissue will be repaired and healed. The ligation process is time-saving and labor-saving. It can be completed by one person alone, without anesthesia, and can be left after treatment. It is mildly painful and has rare complications. No scars are left after the operation, and the normal structure and appearance of the rectum and anal canal are not destroyed, which can bring great convenience to subsequent treatment. The biggest problem with the rubber ring currently used is whether the continuous effect of the rubber ring's adduction force can be maintained during its contraction process. If the rubber ring cannot maintain the adduction force, the rubber ring will not achieve a complete tightening and chronic cutting effect, which will cause the rubber ring to fall off and the treatment to be incomplete. At the same time, it may also cause more serious complications, such as bleeding caused by premature detachment of the rubber ring. Currently, the ligation stapler using elastic wire is mainly manually ligated. Although it is more convenient than traditional hemorrhoidectomy, it has more steps. The tightness of the ligation is manually determined, which can easily lead to ligation failure. How to design a ligation device that can combine the steps of the ligation operation and control it through a single switch, so as to achieve one-step operation, ensure the safety of the operation, and improve the efficiency of the operation is a problem that technical personnel in this field need to solve. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide an automatic ligation structure of a ligation device to solve the above-mentioned problems existing in the prior art.

[0004] To achieve the above-mentioned purpose and other related purposes, the present invention provides an automatic ligation structure of a ligation device, comprising:

[0005] case;

[0006] A ring driving component is arranged inside the shell and can move along the front-rear direction of the shell; a ring driving rack is arranged on the outer side surface of the ring driving component;

[0007] An air intake pipe is arranged inside the shell, and the front end of the air intake pipe passes through the shell; a push block is sleeved on the front end of the air intake pipe, and the push block is connected to the front end of the ring sleeve driving component;

[0008] A tension spring is arranged inside the housing, and a rear end position of the tension spring is fixed;

[0009] A driving rod is arranged inside the shell and can move along the front-rear direction of the shell, the rear end of the driving rod is connected to the front end of the tension spring, and a rod rack is also arranged on the rear end of the driving rod;

[0010] A gear, movably disposed inside the housing and between the pull rod rack and the ring sleeve driving rack;

[0011] A tightening rod is disposed inside the housing and can move along the front-rear direction of the housing, and the front end of the tightening rod is located in front of the front end of the driving rod;

[0012] An elastic ligature wire, the front end of which is tied with a slipknot to form a loop sleeve, and the loop sleeve is sleeved on the front end of the suction pipe; the rear end of the ligature wire is connected to the front end of the tightening rod;

[0013] The front end of the driving pull rod is provided with a driving hook, and the rear end of the tightening pull rod is provided with a tightening hook, and the tightening hook is arranged opposite to the driving hook;

[0014] a trigger, movably mounted inside the housing;

[0015] When the automatic ligation structure is in an initial state, the trigger is against the rear end of the driving rod, the tension spring is stretched, the gear is engaged with the teeth of the rod rack, the gear is engaged with the teeth of the ring driving rack, the rod rack is in front of the ring driving rack, and there is an initial gap between the tightening hook and the driving hook.

[0016] Preferably, the ring sleeve driving component comprises: a driving positioning spring, a driving slider, a driven slider and a driven positioning spring;

[0017] The rear end of the driving positioning spring is fixed;

[0018] The driving slider can move along the front-rear direction of the housing; the rear end of the driving slider is connected to the front end of the driving positioning spring, and the ring driving rack is arranged on the outer side of the driving slider;

[0019] The driven slider can move along the front-rear direction of the housing, and the rear end of the driven slider contacts the front end of the driving slider;

[0020] The driven positioning spring is sleeved on the rear end of the driven slider and connected to the rear end of the driven slider, and the driven positioning spring is located between the air intake pipe and the driving slider.

[0021] Furthermore, the automatic ligation structure of the ligation device also includes: an trachea joint arranged inside the shell, and the trachea joint is arranged behind the suction pipe; the driving positioning spring and the driving slider are sleeved on the trachea joint, the rear end of the suction pipe is connected to the trachea joint, and the driven slider is arranged on the suction pipe.

[0022] Furthermore, the central axis of the driving positioning spring is colinear with the central axis of the driven positioning spring.

[0023] Furthermore, the central axis of the tension spring is parallel to the central axis of the driving slider.

[0024] Furthermore, the trigger is located below the driving rod, the driving rod is located below the tightening rod, and the tightening rod is located below the suction pipe.

[0025] As described above, the automatic ligation structure of the ligation device of the present invention has the following beneficial effects:

[0026] When the automatic ligation structure of the ligation device of the present invention is used, the medical staff rotates the trigger so that the trigger no longer presses against the rear end of the driving rod, and the restoring force of the tension spring drives the driving rod to move backward, and the rod rack on the driving rod pushes the ring driving rack on the ring driving component through the gear, so that the ring driving component moves forward, and the ring driving component drives the pushing block to move forward, and the pushing block pushes the ring set to remove the hemorrhoids; the restoring force of the tension spring will continue to drive the driving rod to move backward, and the driving hook of the driving rod will pull the ligation tightening hook The tightening hook of the rod and the tightening rod move backward with the driving rod, and the tightening rod tightens the ring set on the hemorrhoids; the present invention can control the steps of taking out the hemorrhoids and tightening the hemorrhoids with the ring set by a trigger, which can be completed in one step, making the operation process faster; the present invention can control the tightening degree of the ligation line by the tension spring to ensure that the tightened ring set has sufficient inward force; at the same time, the present invention is easy to operate with one hand, which is convenient for doctors and simplifies hemorrhoid surgery; the present invention ensures the safety of the operation and improves the efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram showing that the automatic ligation structure of the ligation device of this embodiment is in an initial state and no shell is provided.

[0028] Figure 2 It is a schematic structural diagram of the automatic ligation structure of the ligation device of this embodiment when the first stage of firing is completed and the shell is not provided.

[0029] Figure 3 It is a schematic structural diagram of the automatic ligation structure of the ligation device of this embodiment when the second stage of firing is completed and the shell is not provided.

[0030] Figure 4 It is a schematic diagram of the internal structure of the automatic ligation structure of the ligation device of this embodiment, in which the driving positioning spring, the driven positioning spring and the ligation wire are not provided.

[0031] Description of Figure Numbers

[0032] 100 Shell

[0033] 110 Trigger

[0034] 120 Shaft

[0035] 200 Ring drive parts

[0036] 210 Ring drive rack

[0037] 220 Drive positioning spring

[0038] 230 Drive Slider

[0039] 240 Follower Slider

[0040] 250 Follower positioning spring

[0041] 300 Suction pipe

[0042] 310 Push Block

[0043] 400 Extension Spring

[0044] 500 Drive rod

[0045] 510 tie rod rack

[0046] 520 Drive hook

[0047] 600 Gear

[0048] 700 Tighten the tie rod

[0049] 710 Tighten the hook

[0050] 800 Tie wire

[0051] 810 Ring Kit

[0052] 900 Air pipe connector DETAILED DESCRIPTION

[0053] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0054] Please refer to the attached drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the attached drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0055] like Figures 1 to 4 As shown, the automatic ligation structure of the ligation device of this embodiment includes:

[0056] Housing 100;

[0057] The ring driving component 200 is disposed inside the housing 100 and can move along the front-rear direction of the housing 100; a ring driving rack 210 is disposed on the outer surface of the ring driving component 200;

[0058] The air intake pipe 300 is arranged inside the housing 100, and the front end of the air intake pipe 300 passes through the housing 100; the front end of the air intake pipe 300 is sleeved with a push block 310, and the push block 310 is connected to the front end of the ring sleeve driving component 200;

[0059] The tension spring 400 is disposed inside the housing 100, and the rear end of the tension spring 400 is fixed;

[0060] The driving rod 500 is disposed inside the housing 100 and can move along the front-rear direction of the housing 100. The rear end of the driving rod 500 is connected to the front end of the tension spring 400. The rear end of the driving rod 500 is also provided with a rod rack 510.

[0061] The gear 600 is movably disposed inside the housing 100 and is located between the pull rod rack 510 and the ring sleeve driving rack 210;

[0062] The tightening rod 700 is disposed inside the housing 100 and can move along the front-to-back direction of the housing 100. The front end of the tightening rod 700 is located in front of the front end of the driving rod 500.

[0063] The ligature wire 800 has an elasticity, and the front end of the ligature wire 800 is tied with a slipknot to form a loop set 810, and the loop set 810 is sleeved on the front end of the suction pipe 300; the rear end of the ligature wire 810 is connected to the front end of the tightening rod 700;

[0064] A driving hook 520 is provided at the front end of the driving rod 500, and a tightening hook 710 is provided at the rear end of the tightening rod 700. The tightening hook 710 is arranged opposite to the driving hook 520.

[0065] A trigger 110 is movably mounted inside the housing 100;

[0066] When the automatic ligation structure is in the initial state, the trigger 110 is against the rear end of the driving rod 500, the tension spring 400 is stretched, the gear 600 is meshed with the teeth of the rod rack 510, the gear 600 is meshed with the teeth of the ring driving rack 210, the rod rack 510 is in front of the ring driving rack 210, and there is an initial gap between the tightening hook 710 and the driving hook 520.

[0067] When the automatic ligation structure of the ligation device of the present invention is used, the medical staff rotates the trigger 110 so that the trigger 110 no longer presses against the rear end of the driving rod 500, and the restoring force of the tension spring 400 drives the driving rod 500 to move backward, and the rod rack 510 on the driving rod 500 pushes the ring driving rack 210 on the ring driving component 200 through the gear 600, and the ring driving component 200 moves forward, and the ring driving component 200 drives the pushing block 310 to move forward, and the pushing block 310 pushes the ring set 810 out to remove the hemorrhoids, and the automatic ligation structure has completed the first stage of firing; because there is an initial interval between the tightening hook 710 and the driving hook 520, when the first stage of firing of the automatic ligation structure is completed, the tightening hook 710 and the driving hook 520 are not in contact;

[0068] After the first stage of firing of the automatic ligation structure is completed, the restoring force of the tension spring 400 will continue to drive the driving rod 500 to move backward, and the driving hook 520 of the driving rod 500 will pull the tightening hook 710 of the tightening rod 700. The tightening rod 700 moves backward with the driving rod 500, and the tightening rod 700 will tighten the ring kit 810 on the hemorrhoids. At this point, the automatic ligation structure has completed the second stage of firing; when the second stage of firing of the automatic ligation structure is completed, the ring driving rack 210 is disengaged from the gear 600.

[0069] The present invention can control the steps of removing hemorrhoids and tying the hemorrhoids with the ring set 810 by a trigger 110, that is, completing the steps of firing twice, achieving one-step completion, and making the operation process faster; the present invention can control the tightness of the ligature line 800 by the tension spring 400 to ensure that the ring set 810 has sufficient retraction force after tying; at the same time, the present invention is easy to operate with one hand, which is convenient for doctors and simplifies hemorrhoid surgery; the present invention ensures the safety of the operation and improves the efficiency of the operation.

[0070] The ring driving component 200 includes: a driving positioning spring 220, a driving slider 230, a driven slider 240 and a driven positioning spring 250;

[0071] The rear end of the driving positioning spring 220 is fixed;

[0072] The driving slider 230 can move along the front-to-back direction of the housing 100; the rear end of the driving slider 230 is connected to the front end of the driving positioning spring 220, and the ring driving rack 210 is disposed on the outer surface of the driving slider 230;

[0073] The driven slider 240 can move along the front-rear direction of the housing 100, and the rear end of the driven slider 240 contacts the front end of the driving slider 230;

[0074] The driven positioning spring 250 is sleeved on the rear end of the driven slider 240 and connected to the rear end of the driven slider 240 . The driven positioning spring 250 is located between the air intake pipe 300 and the driving slider 230 .

[0075] The rod rack 510 on the driving rod 500 pushes the ring-shaped driving rack 210 on the outer side of the driving slider 230 through the gear 600, and the driving positioning spring 220 is stretched, the driving slider 230 moves forward, the driving slider 230 pushes the driven slider 240 to move forward, and the driving slider 230 pushes the driven positioning spring 250 to compress, the driven slider 240 drives the push block 310 to move forward, and the push block 310 pushes out the ring set 810. After the rod rack 510 is disengaged from the gear 600, the restoring force of the driving positioning spring 220 drives the driving slider 230 to move backward and reset, and the restoring force of the driven positioning spring 250 drives the driven slider 240 to move backward and reset.

[0076] The automatic ligation structure of the ligation device also includes: an air pipe joint 900 disposed inside the housing 100, the air pipe joint 900 is disposed behind the air suction pipe 300; the driving positioning spring 220 and the driving slider 230 are sleeved on the air pipe joint 900, the rear end of the air suction pipe 300 is connected to the air pipe joint 900, and the driven slider 240 is disposed on the air suction pipe 300. This structure facilitates the installation of the driving positioning spring 220 and the driving slider 230, and is conducive to stably driving the slider 230 to push the driven slider 240 to move.

[0077] In order to make the internal structure of the automatic tying structure more compact, the central axis of the driving positioning spring 220 is colinear with the central axis of the driven positioning spring 250. The trigger 110 is located below the driving rod 500, the driving rod 500 is located below the tightening rod 700, and the tightening rod 700 is located below the suction pipe 300. The trigger 110 is movably connected to the housing 100 through the rotating shaft 120.

[0078] The central axis of the tension spring 400 is parallel to the central axis of the driving slider 230. The central axis of the tension spring 400 is parallel to the length direction of the driving rod 500, and the length direction of the driving rod 500 is the front-back direction of the driving rod 500. This structure enables the restoring force of the tension spring 400 to stably drive the driving rod 500 to move, and the driving rod 500 can stably drive the driving slider 230 to move.

[0079] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0080] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. An automatic ligation structure of a ligation device, characterized in that: include: Housing (100); A ring sleeve driving component (200) is arranged inside the housing (100) and can move along the front-rear direction of the housing (100); a ring sleeve driving rack (210) is arranged on the outer surface of the ring sleeve driving component (200); An air intake pipe (300) is arranged inside the shell (100), and the front end of the air intake pipe (300) passes through the shell (100); a pushing block (310) is sleeved on the front end of the air intake pipe (300), and the pushing block (310) is connected to the front end of the ring sleeve driving component (200); A tension spring (400) is arranged inside the housing (100), and the rear end position of the tension spring (400) is fixed; A driving rod (500) is disposed inside the housing (100) and is movable along the front-rear direction of the housing (100); the rear end of the driving rod (500) is connected to the front end of the tension spring (400); and a rod rack (510) is also disposed on the rear end of the driving rod (500); A gear (600) movably disposed inside the housing (100) and located between the pull rod rack (510) and the ring sleeve driving rack (210); A tightening rod (700) is disposed inside the housing (100) and is movable along the front-rear direction of the housing (100), and the front end of the tightening rod (700) is located in front of the front end of the driving rod (500); An elastic ligature (800) is provided, wherein the front end of the ligature (800) is tied with a slipknot to form a ring set (810), the ring set (810) is sleeved on the front end of the suction pipe (300), and the ring set (810) is located in front of the pushing block (310); the rear end of the ligature (800) is connected to the front end of the tightening pull rod (700); The front end of the driving pull rod (500) is provided with a driving hook (520), and the rear end of the tightening pull rod (700) is provided with a tightening hook (710), and the tightening hook (710) is arranged opposite to the driving hook (520); A trigger (110) movably mounted inside the housing (100); When the automatic ligation structure is in an initial state, the trigger (110) presses against the rear end of the driving rod (500), the tension spring (400) is stretched, the gear (600) engages with the teeth of the rod rack (510), the gear (600) engages with the teeth of the ring driving rack (210), the rod rack (510) is in front of the ring driving rack (210), and there is an initial gap between the tightening hook (710) and the driving hook (520).

2. The automatic ligation structure of the ligation device according to claim 1, characterized in that: The ring sleeve driving component (200) comprises: a driving positioning spring (220), a driving slider (230), a driven slider (240) and a driven positioning spring (250); The rear end of the driving positioning spring (220) is fixed; The driving slider (230) can move along the front-rear direction of the housing (100); the rear end of the driving slider (230) is connected to the front end of the driving positioning spring (220), and the ring-shaped driving rack (210) is arranged on the outer side surface of the driving slider (230); The driven slider (240) can move along the front-rear direction of the housing (100), and the rear end of the driven slider (240) contacts the front end of the driving slider (230); The driven positioning spring (250) is sleeved on the rear end of the driven slider (240) and connected to the rear end of the driven slider (240); the driven positioning spring (250) is located between the air intake pipe (300) and the driving slider (230).

3. The automatic ligation structure of the ligation device according to claim 2, characterized in that: Also includes: An air pipe joint (900) is arranged inside the shell (100), and the air pipe joint (900) is arranged behind the air intake pipe (300); the driving positioning spring (220) and the driving slider (230) are sleeved on the air pipe joint (900), the rear end of the air intake pipe (300) is connected to the air pipe joint (900), and the driven slider (240) is arranged on the air intake pipe (300).

4. The automatic ligation structure of the ligation device according to claim 3, characterized in that: The central axis of the driving positioning spring (220) is colinear with the central axis of the driven positioning spring (250).

5. The automatic ligation structure of the ligation device according to claim 2, characterized in that: The central axis of the tension spring (400) is parallel to the central axis of the driving slider (230).

6. The automatic ligation structure of the ligation device according to claim 2, characterized in that: The trigger (110) is located below the driving rod (500), the driving rod (500) is located below the tightening rod (700), and the tightening rod (700) is located below the suction pipe (300).

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