CN211511973U - Anorectal ligation device - Google Patents

Abstract

The utility model relates to an anorectal ligation device, which comprises a gun body, a gun handle, a firing assembly and a gun barrel assembly. The gun handle is installed at the rear end of the gun body, and the gun barrel assembly is installed at the front end of the gun body. The assembly is installed in the gun body, and the front end of the barrel assembly is equipped with a composite sleeve tie ring, the composite sleeve tie ring includes an outer rubber ring and an inner elastic coil; the outer rubber ring is provided with an opening groove, and the free end of the inner elastic coil passes through It is connected with the barrel assembly through the opening slot; the firing assembly includes a firing handle, a tension spring, a sliding block, a driving gear unit and a driven rack block, the driving gear unit is installed on the sliding block, and the tension spring is installed on the Between the inner wall of the gun and the sliding block; the firing handle is hinged on the inner wall of the gun, and the upper end of the firing handle is connected with the sliding block; the driven rack block is installed in the gun body and can move back and forth, and the driven rack block A gear rack is arranged on the lower end face of the gear rack, and the gear rack is connected with the driving gear unit.

Description

An anorectal ligature

technical field

The utility model relates to the technical field of medical devices, in particular to an anorectal ligation device.

Background technique

A small rubber ring is inserted into the root of the internal hemorrhoid through an internal hemorrhoid ligator, and the strong elasticity and contraction force of the rubber ring are used to tie the tiny blood vessels, block the blood supply of the internal hemorrhoids, and cure the hemorrhoids from ischemia, necrosis, and fall off. The whole process of the ligation treatment is automated, time-saving, labor-saving, practical and simple; the patient is safer, free from taking medicine, no injection, and no cross infection. For example, Chinese Patent No. 201310430853.4 disclosed "Elastic Wire Setting Method and Automatic Elastic Wire Ligating Device" in Chinese Patent No. 201310430853.4 and "Continuously Launching Negative Pressure Suction Hemorrhoid Ligating Device" disclosed in 201620201038.X. technology implementation path.

The firing structure of traditional anorectal ligatures is relatively complicated, such as "ligation device" disclosed in Chinese patent application 88218876.3, "a reusable anorectal ligation device for reducing cross infection" disclosed in Chinese patent application 201910114606.0, etc., resulting in Production costs are higher.

Utility model content

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, and to provide an anorectal ligation device, which simplifies the firing structure of the traditional anorectal ligation device and reduces the production cost.

In order to achieve the above purpose, the technical scheme adopted by the present utility model is: a anorectal ligation device, comprising a gun body, a gun handle, a firing assembly and a gun barrel assembly, and the gun handle is installed at the rear end of the gun body, and the gun barrel assembly The front end of the gun body is installed, the firing assembly is installed in the gun body, and the front end of the barrel assembly is installed with a composite tie ring, which includes an outer rubber ring and an inner elastic coil; the outer rubber ring is provided with An open slot, the free end of the inner elastic coil is connected to the barrel assembly through the open slot; the firing assembly includes a firing handle, a tension spring, a sliding block, a driving gear unit and a driven rack block, and the driving gear unit is installed and then On the sliding block, the tension spring is installed between the inner wall of the gun and the sliding block; the firing handle is hinged on the inner wall of the gun, and the upper end of the firing handle is connected with the sliding block; the driven rack block is installed in the gun body It can move back and forth, and a gear rack is arranged on the lower end surface of the driven rack block, and the gear rack is connected with the driving gear unit.

As a further improvement of the present invention, the firing handle includes a main body and a torch body provided on the main body, the upper end surface of the torch body is a plane or arc surface, and both sides of the upper end surface are inclined surfaces; The included angle is not less than 30°; the intersections of the left and right sides of the torch body and the inclined plane are arc transition surfaces.

As a further improvement of the present invention, the sliding block is provided with a firing handle groove, and the firing handle groove is a rectangular groove.

As a further improvement of the present invention, the driving gear unit includes a mounting plate, a driving gear and a ratchet, the mounting plate is fixed on the sliding block, and the ratchet is connected between the mounting plate and the driving gear; the gear rack is connected to the sliding block. The drive gears mesh.

As a further improvement of the present invention, two ends of the driven rack block are provided with sliding rods, and the sliding rods are installed in the gun body.

As a further improvement of the present invention, the ratchet wheel includes an outer casing, a helical gear located in the outer casing, a mandrel and a one-way stop rod, the outer casing is fixed on the mounting plate; one end of the one-way stop rod is hinged and then attached to the inner wall of the outer casing , the other end is lapped on the helical teeth of the helical gear; the helical gear and the outer casing are fixed on the mandrel at the same time; the outer end of the mandrel is connected with the drive gear.

Due to the application of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art:

The firing structure of the traditional anorectal ligation device is simplified, and the production cost is reduced.

Description of drawings

Below in conjunction with accompanying drawing, the technical scheme of the present utility model is further described:

Accompanying drawing 1 is the outline structure schematic diagram of the present utility model;

Accompanying drawing 2 is the first structural schematic diagram of the firing assembly of the present invention;

Accompanying drawing 3 is the second schematic diagram of the firing assembly structure of the present invention;

Accompanying drawing 4 is the torch body structure schematic diagram of the present utility model;

Figure 5 is a schematic diagram of the ratchet structure of the present invention.

In the picture: 1, gun handle; 2, firing handle; 2-1, inclined plane; 2-2, arc transition surface; 2-3, torch body; 3, gun body; 4, barrel assembly; 5, slide bar ;6, driven rack block; 6-1, gear rack; 7, ratchet; 7-1, jacket; 7-2, one-way stop rod; 7-3, helical gear; 7-4, spindle; 8. Mounting plate; 9. Drive gear; 10. Tension spring; 11. Slide block; 11-1. Slot for firing handle; 12. Hinged shaft.

Detailed ways

The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

An anorectal ligation device as shown in Figures 1 to 5 includes a gun body 3, a gun handle 1, a firing assembly and a gun barrel assembly 4, the gun handle 1 is installed at the rear end of the gun body 3, and the gun barrel assembly 4 is installed At the front end of the gun body 3, the firing assembly is installed in the gun body 3, and the front end of the gun barrel assembly 4 is installed with a composite tie ring, which includes an outer rubber ring and an inner elastic coil; the outer rubber ring is provided with an opening Slot, the free end of the internal elastic coil is connected with the barrel assembly 4 through the open slot; the concrete structure and the use method of the composite ligature ring refer to "a kind of anorectal ligature device" disclosed by Chinese Patent Application No. 201611121501.0 and Chinese Patent Application No. 201820441245.1, "An Anorectal Ligator".

The firing assembly includes a firing handle 2, a tension spring 10, a sliding block 11, a driving gear unit and a driven rack block 6. The driving gear unit is installed on the sliding block 11, and the tension spring 10 is installed between the inner wall of the gun body 3 and the sliding block 11. time; the firing handle 2 is hinged on the inner wall of the gun body 3 through the hinge shaft 12, and the upper end of the firing handle 2 is connected with the sliding block 11; the driven rack block 6 is installed in the gun body 3 and can move back and forth, the driven rack block The lower end face of 6 is provided with a gear rack 6-1, which is connected with the drive gear 9 of the drive gear unit.

When firing, the firing handle 2 moves first, pushes the sliding block 11 to move through the firing handle groove 11-1, and the sliding block 11 drives the driving gear unit to move forward; since the ratchet is installed in the opposite direction, the driving gear 9 cannot rotate at this time, only The driven rack block 6 is driven to move forward by the gear rack 6-1, thereby completing the firing of the composite ligature ring. For details, please refer to "An Anorectal ligation device" disclosed in Chinese Patent Application No. 201611121501.0 and Chinese Patent Application No. 201820441245.1 Public "an anorectal ligation device".

When the firing is completed, the human hand no longer applies the firing force to the firing handle 2, and the sliding block 11 is reset under the action of the tension spring 10, and drives the firing handle 2 to reset. At this time, the ratchet has no binding force on the driving gear 9, and the driving gear 9 is driven by the sliding block 11 to rotate and return to its initial position. The gear rack 6-1 remains stationary. Repeat the above process to complete the firing of all composite ligatures.

To achieve the above purpose, the firing handle 2 includes a main body and a torch body 2-3 disposed on the main body. The torch body 2-3 gradually increases from bottom to top, and the maximum size matches that of the firing handle groove 11-1. The upper end surface of the torch body 2-3 is a plane or arc surface, and the two sides of the upper end surface are inclined surfaces 2-1, so as to ensure that the movement process will not cause interference.

The included angle between the left and right sides of the torch body 2-3 is not less than 30° to ensure that there will be no interference during the movement.

The intersections of the left and right sides of the torch body 2-3 and the inclined surfaces are arc transition surfaces 2-2 to ensure that no interference phenomenon occurs during the movement.

The sliding block 11 is provided with a firing handle slot 11-1. The firing handle slot 11-1 is a rectangular slot, which can convert the arc motion of the firing handle 2 into a linear motion without interference.

The driving gear unit includes a mounting plate 8 , a driving gear 9 and a ratchet. The mounting plate 8 is fixed on the sliding block 11 , and the ratchet is connected between the mounting plate 8 and the driving gear 9 ; the gear rack 6 - 1 is meshed with the driving gear 9 .

Both ends of the driven rack block 6 are provided with sliding rods 5, and the sliding rods 5 are installed in the gun body.

The ratchet includes an outer casing 7-1, a helical gear 7-3 located in the outer casing 7-1, a mandrel 7-4 and a one-way stop rod 7-2. The outer casing 7-1 is fixed on the mounting plate 8; the one-way stop One end of the rod 7-2 is hinged on the inner wall of the outer casing 7-1, and the other end is overlapped with the helical tooth surface of the helical gear 7-3, which has achieved the purpose of one-way stop; the helical gear 7-3 and the outer casing 7-1 are at the same time. Fix it on the mandrel 7-4; the outer end of the mandrel 7-4 is connected with the drive gear 9.

The above are only specific application examples of the present invention, and do not constitute any limitation to the protection scope of the present invention. All technical solutions formed by equivalent transformation or equivalent replacement shall fall within the protection scope of the present invention.

Claims (6)

1. an anorectal ligature, comprising gun body, gun handle, firing assembly and gun barrel assembly, described gun handle is installed the rear end of gun body again, gun barrel assembly is installed the front end of gun body again, and described firing assembly is installed In the gun body, the front end of the barrel assembly is equipped with a composite sleeve tie ring, the composite sleeve tie ring includes an outer rubber ring and an inner elastic coil; the outer rubber ring is provided with an opening groove, and the free end of the inner elastic coil passes through the opening The groove is connected with the barrel assembly, and is further characterized in that: the firing assembly includes a firing handle, a tension spring, a sliding block, a driving gear unit and a driven rack block, the driving gear unit is mounted on the sliding block, and the pulling The spring is installed between the inner wall of the gun and the sliding block; the firing handle is hinged on the inner wall of the gun, and the upper end of the firing handle is connected to the sliding block; the driven rack block is installed in the gun and can move back and forth, driven A gear rack is arranged on the lower end face of the rack block, and the gear rack is connected with the driving gear unit. 2. The anorectal ligation device according to claim 1, characterized in that: the firing handle comprises a main body and a torch body provided on the main body, and the upper end surface of the torch body is a plane or an arc surface, and both sides of the upper end surface The angle between the left and right sides of the torch body is not less than 30°; the intersections of the left and right sides of the torch body and the slope are arc transition surfaces. 3 . The anorectal ligation device according to claim 1 , wherein the sliding block is provided with a firing handle groove, and the firing handle groove is a rectangular groove. 4 . 4. The anorectal ligation device according to claim 1, wherein the driving gear unit comprises a mounting plate, a driving gear and a ratchet, the mounting plate is fixed on the sliding block, and the ratchet is connected to the mounting plate and the drive gear; the gear rack meshes with the drive gear. 5 . The anorectal ligation device according to claim 1 , wherein the two ends of the driven rack block are provided with sliding rods, and the sliding rods are installed in the gun body. 6 . 6. The anorectal ligation device according to claim 4, wherein the ratchet wheel comprises an outer casing, a helical gear positioned in the outer casing, a mandrel and a one-way stop rod, and the outer casing is fixed on a mounting plate; One end of the one-way stop rod is hinged on the inner wall of the casing, and the other end is overlapped on the helical teeth of the helical gear; the helical gear and the casing are fixed on the mandrel at the same time; the outer end of the mandrel is connected with the drive gear.

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