CN111658049B

CN111658049B - Disposable negative pressure haemorrhoids ligation device

Info

Publication number: CN111658049B
Application number: CN202010593513.3A
Authority: CN
Inventors: 汤明程; 王建中; 汤文远
Original assignee: Taizhou Pinqing Medical Equipment Co ltd
Current assignee: Taizhou Pinqing Medical Equipment Co ltd
Priority date: 2020-06-27
Filing date: 2020-06-27
Publication date: 2022-10-21
Anticipated expiration: 2040-06-27
Also published as: CN111658049A

Abstract

The invention relates to a disposable negative pressure hemorrhoid ligation device, which comprises a shell; a piston cylinder; a negative pressure cylinder; a push cylinder; a ratchet wheel; a non-return pawl; a second pull cord; a guide wheel and a fixed block; a trigger is rotatably connected in the shell through a first rotating shaft, and a shifting plate is rotatably connected in the shell through a second rotating shaft; the piston cylinder is fixedly connected in the shell, a piston plate is connected in the piston cylinder in a sliding manner, and the piston plate is fixedly connected with the sliding plate through a push rod; a return spring is fixedly connected between the sliding plate and the piston cylinder; through the reciprocating type trigger that presses drive first stay cord work, so through the cooperation of first stay cord and piston plate, let form the negative pressure in piston cylinder and the negative pressure section of thick bamboo, can be fast with in the absorption head on the haemorrhoids suction negative pressure section of thick bamboo, still can be according to the size of haemorrhoids, the steerable frequency and the dynamics of pulling the trigger of doctor, and then the size of control negative pressure adsorption affinity, so this equipment convenient operation is swift, easy to carry out.

Description

Disposable negative pressure haemorrhoids ligation device

Technical Field

The invention relates to the technical field of hemorrhoid ligation devices, in particular to a disposable negative pressure hemorrhoid ligation device.

Background

The hemorrhoids are divided into internal hemorrhoids, external hemorrhoids, mixed hemorrhoids and the like according to different occurrence parts; there are two main theories about the etiology of hemorrhoids. First, by the theory of varicose veins, hemorrhoids are thought to be venous masses formed by extravasation, dilation and buckling of the venous plexus under the lower submucosa of the rectum and under the skin of the anal canal. However, the currently widely accepted theory is that Thomson's lower anal pad theory suggests that hemorrhoids are originally normal anatomical structures of the anal canal, i.e., vascular pads, and are ring-like sponge-like tissue strips at or above the dentate line by 1.5 cm. Only when the tissue of the anal pad is abnormal and has symptoms, the hemorrhoid can be treated, and the treatment aims at relieving the symptoms instead of eliminating the hemorrhoid. The factors inducing hemorrhoids are many, wherein constipation, long-term drinking, eating a large amount of irritant food and sedentary life are the main causes;

the hemorrhoid ligation is the most common effective method for treating hemorrhoid at present, the operation is simple and convenient, hospitalization is not needed, and the method is safe, reliable and economical. But at present, doctors usually operate by simple instruments or direct free hands in clinic. Is time consuming and labor intensive and may also cause bleeding that exacerbates patient suffering. At present, although some improvements are made in the technology of people, a plurality of pistol type hemorrhoid ligation devices are invented, but the operation is inconvenient;

in summary, the present application now proposes a disposable negative pressure hemorrhoid ligation device to solve the above-mentioned problems.

Disclosure of Invention

The invention aims to provide a disposable negative pressure hemorrhoid ligation device, which solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a disposable negative pressure hemorrhoid ligation device comprises a shell; a piston cylinder; a negative pressure cylinder; a push cylinder; a ratchet wheel; a non-return pawl; a second pull cord; a guide wheel and a fixed block; a trigger is rotationally connected in the shell through a first rotating shaft, and a shifting plate is rotationally connected in the shell through a second rotating shaft; the piston cylinder is fixedly connected in the shell, a piston plate is connected in the piston cylinder in a sliding mode, and the piston plate is fixedly connected with the sliding plate through a push rod; a return spring is fixedly connected between the sliding plate and the piston cylinder; the push rod is also fixedly connected with a first pull rope, and one end of the first pull rope penetrates through the fixed pulley and is fixedly connected with the trigger; the fixed pulley is fixedly arranged in the shell; one end of the piston cylinder is connected with a connecting pipe in an airtight manner, the connecting pipe is connected with the negative pressure cylinder in an airtight manner, a pipeline is fixedly connected to the piston cylinder and is positioned at the outer end of the shell, and a second one-way valve is arranged on the pipeline; the connecting pipe is provided with a first one-way valve; the negative pressure cylinder is fixedly connected to the shell; the push cylinder is sleeved on the negative pressure cylinder and is connected to the shell in a sliding manner, a fixed block is fixedly connected to the push cylinder in the shell, and a power spring is fixedly connected between the fixed block and the top end in the shell; the bottom end of the push cylinder is fixedly connected with a rack, the inner bottom end of the shell is fixedly connected with an installation frame, the installation frame is rotatably connected with a gear through a third rotating shaft, and the ratchet wheel is coaxially and fixedly connected with the gear; the gear is meshed with the rack; the bottom end of the mounting frame is fixedly connected with a fixed seat, a fourth rotating shaft is rotatably connected to the fixed seat, the non-return pawl is fixedly connected with the fourth rotating shaft, a torsion spring is sleeved on the fourth rotating shaft, and the torsion spring is clamped with the fixed seat; the torsion spring drives the non-return pawl to be clamped with the ratchet wheel through the rotating shaft; the position of the non-return pawl corresponding to the inner bottom end of the shell is fixedly provided with a guide wheel, one end of the second pull rope is fixedly connected with the non-return pawl, and the other end of the second pull rope penetrates through the guide wheel and the mounting frame to be fixedly connected with the shifting plate.

Preferably, the device further comprises a mounting seat; the elastic sheet and the adjusting bulge; set up on dialling the board and adjust the arch, the flexure strip passes through mount pad fixed connection in the casing, just the flexure strip is contradicted with adjusting the arch.

More preferably, the device also comprises an adjusting spring; and an adjusting spring is fixedly connected between the trigger and the inner wall of the shell.

More preferably, the device also comprises an exhaust pipe and an exhaust valve; still fixedly connected with blast pipe on the piston cylinder, just the blast pipe passes casing and fixedly connected with discharge valve.

More preferably, the device also comprises a positioning sleeve; the locating sleeve is fixedly connected in the shell, and the push cylinder penetrates through and is connected to the locating sleeve in a sliding mode.

More preferably, the rack is fixedly connected to the bottom end of the push cylinder through a connecting rod.

More preferably, an adsorption head is fixedly mounted at one end of the negative pressure cylinder.

More preferably, a ring pushing device is fixedly mounted at one end of the pushing cylinder.

More preferably, the outer end of the shell is further provided with anti-skid grains.

More preferably, a fixing sleeve is fixedly embedded in the mounting frame, and the second pull rope penetrates through the mounting frame through the fixing sleeve.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the shell, the piston cylinder and the negative pressure cylinder are mutually matched, and the reciprocating type pressing trigger is used for driving the first pull rope to work, so that negative pressure is formed in the piston cylinder and the negative pressure cylinder through the matching of the first pull rope and the piston plate, and then hemorrhoids can be quickly sucked into the adsorption head on the negative pressure cylinder.

2. According to the invention, through the mutual matching of the push cylinder, the ratchet wheel, the non-return pawl, the second pull rope, the guide wheel and the fixed block, when the haemorrhoids are sleeved and tied, the dial plate is pulled upwards, the push cylinder is pushed out through the adjusting spring, and then when the push cylinder slides outwards, the sleeved and tied ring is pushed out and tied at the root of the haemorrhoids through the action of the ring pushing device, so that a doctor can complete the operation with one hand, the device has a simple structure, is rapid and convenient, and is accurate in sleeved and tied position.

Drawings

FIG. 1 is a schematic structural view of a housing according to the present invention;

FIG. 2 is a schematic sectional view of the shell according to the present invention;

FIG. 3 is an enlarged schematic view of region A of FIG. 2;

FIG. 4 is an enlarged schematic view of region B of FIG. 2;

FIG. 5 is an enlarged schematic view of region C of FIG. 2;

FIG. 6 is an enlarged view of the area D in FIG. 3 according to the present invention;

FIG. 7 is a schematic sectional front view of the piston cylinder according to the present invention;

FIG. 8 is a side view of the fixing base of the present invention;

fig. 9 is a schematic structural view of the mounting bracket of the present invention.

In the reference symbols: 100. a housing; 110. anti-skid lines; 120. a fixed pulley; 130. a trigger; 131. a first rotating shaft; 140. dialing a plate; 141. a second rotating shaft; 142. an adjusting projection; 150. an elastic sheet; 160. a mounting seat; 170. adjusting the spring; 200. a piston cylinder; 210. a piston plate; 220. a push rod; 230. a sliding plate; 240. a return spring; 250. a first pull cord; 260. a connecting pipe; 270. a first check valve; 280. a pipeline; 281. a second one-way valve; 300. a negative pressure cylinder; 310. an adsorption head; 400. a push cylinder; 410. a positioning sleeve; 420. a connecting rod; 430. a rack; 440. a mounting frame; 450. a third rotating shaft; 460. a gear; 500. a ratchet wheel; 510. a fixed seat; 520. a non-return pawl; 530. a fourth rotating shaft; 540. a torsion spring; 600. a second pull cord; 610. a guide wheel; 620. fixing a sleeve; 700. a fixed block; 710. a power spring; 800. an exhaust pipe; 810. an exhaust valve; 900. a ring pushing device.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, a disposable negative pressure hemorrhoid ligation device comprises a housing 100; a piston cylinder 200; a negative pressure cylinder 300; a push cylinder 400; a ratchet 500; a check pawl 520; a second draw cord 600; a guide wheel 610 and a fixing block 700; a trigger 130 is rotatably connected in the housing 100 through a first rotating shaft 131, and a dial plate 140 is rotatably connected in the housing 100 through a second rotating shaft 141; the piston cylinder 200 is fixedly connected in the housing 100, a piston plate 210 is slidably connected in the piston cylinder 200, and the piston plate 210 is fixedly connected with a sliding plate 230 through a push rod 220; a return spring 240 is fixedly connected between the sliding plate 230 and the piston cylinder 200; the push rod 220 is also fixedly connected with a first pull rope 250, and one end of the first pull rope 250 passes through the fixed pulley 120 and is fixedly connected with the trigger 130; the fixed pulley 120 is fixedly installed in the housing 100; one end of the piston cylinder 200 is hermetically connected with a connecting pipe 260, the connecting pipe 260 is hermetically connected with a negative pressure cylinder 300, a pipeline 280 is fixedly connected to the piston cylinder 200, the pipeline 280 is located at the outer end of the casing 100, and a second one-way valve 281 is arranged on the pipeline 280; a first one-way valve 270 is arranged on the connecting pipe 260; the negative pressure cylinder 300 is fixedly connected to the housing 100; the push cylinder 400 is sleeved on the negative pressure cylinder 300, the push cylinder 400 is slidably connected to the shell 100, a fixing block 700 is fixedly connected to the push cylinder 400 in the shell 100, and a power spring 710 is fixedly connected between the fixing block 700 and the inner top end of the shell 100; the rack 430 is fixedly connected to the bottom end of the push cylinder 400, the mounting frame 440 is fixedly connected to the inner bottom end of the housing 100, the gear 460 is rotatably connected to the mounting frame 440 through the third rotating shaft 450, and the ratchet 500 is coaxially and fixedly connected to the gear 460; the gear 460 is meshed with the rack 430; the bottom end of the mounting frame 440 is fixedly connected with a fixed seat 510, a fourth rotating shaft 530 is rotatably connected to the fixed seat 510, the check pawl 520 is fixedly connected with the fourth rotating shaft 530, a torsion spring 540 is sleeved on the fourth rotating shaft 530, and the torsion spring 540 is clamped with the fixed seat 510; the torsion spring 540 drives the check pawl 520 to be clamped with the ratchet wheel 500 through the rotating shaft; a guide wheel 610 is fixedly installed at a position of the non-return pawl 520 corresponding to the inner bottom end of the housing 100, one end of the second pull rope 600 is fixedly connected with the non-return pawl 520, and the other end of the second pull rope 600 penetrates through the guide wheel 610 and the mounting frame 440 to be fixedly connected with the dial plate 140;

wherein, the third rotating shaft 450 is coaxially and fixedly connected with the gear 460 and the ratchet 500; however, the third shaft 450 is connected to the mounting bracket 440, so the gear 460 and the ratchet 500 are rotatably connected to the mounting bracket 440;

in the initial state, under the action of the rotation force of the torsion spring 540, the fourth rotation shaft 530 drives the non-return pawl 520 to be tightly engaged with the teeth on the ratchet 500; the check pawl 520 limits the ratchet 500 so that the ratchet 500 and the gear 460 can only rotate backwards in one direction;

wherein, the housing 100 can be made of plastic; the push cylinder 400 and the negative pressure cylinder 300 are made of transparent materials;

the first check valve 270 and the second check valve 281 may be various common check valves, and only can implement corresponding functions; the first check valve 270 can only supply air into the piston cylinder 200, and the second check valve 281 can only discharge air pressure in the piston cylinder 200;

therefore, the piston plate 210 reciprocates in the piston cylinder 200, and the piston cylinder 200 can form negative pressure in the negative pressure cylinder 300, so that the hemorrhoid can be adsorbed in the negative pressure cylinder 300 through the negative pressure cylinder 300;

wherein, the non-return pawl 520 can be driven to separate from the teeth on the ratchet wheel 500 by pulling the second pull rope 600;

wherein, the power spring 710 pushes the push cylinder 400 out;

further includes a mounting base 160; an elastic piece 150 and an adjustment protrusion 142; the dial plate 140 is provided with an adjusting protrusion 142, the elastic sheet 150 is fixedly connected in the casing 100 through the mounting seat 160, and the elastic sheet 150 abuts against the adjusting protrusion 142;

when the dial plate 140 moves upwards, the adjusting protrusion 142 extrudes the elastic sheet 150, and when the dial plate 140 is released, the elastic sheet 150 resets to restore the dial plate 140 to the initial position;

also included is an adjustment spring 170; an adjusting spring 170 is fixedly connected between the trigger 130 and the inner wall of the housing 100;

wherein, the adjusting spring 170 is extruded when the trigger 130 is pressed to and fro, and the trigger 130 can be reset in time through the adjusting spring 170;

further comprises an exhaust pipe 800 and an exhaust valve 810; an exhaust pipe 800 is also fixedly connected to the piston cylinder 200, and the exhaust pipe 800 penetrates through the housing 100 and is fixedly connected with an exhaust valve 810;

the exhaust valve 810 is a manual exhaust valve 810, after the use is finished, the exhaust valve 810 is manually controlled to exhaust the gas in the piston cylinder 200 and the negative pressure cylinder 300, and then the negative pressure cylinder 300 is taken down from the hemorrhoids;

also included is a locating sleeve 410; the positioning sleeve 410 is fixedly connected in the casing 100, and the push cylinder 400 penetrates through and is slidably connected to the positioning sleeve 410;

wherein, the positioning sleeve 410 ensures the push cylinder 400 to move linearly;

the rack 430 is fixedly connected to the bottom end of the push cylinder 400 through a connecting rod 420;

an adsorption head 310 is fixedly installed at one end of the negative pressure cylinder 300;

wherein, the hemorrhoids are adsorbed by the adsorption head 310;

a ring pushing device 900 is fixedly arranged at one end of the push cylinder 400;

wherein, the ligation ring is arranged on the ring pushing device 900, and then the ligation ring is pushed out to be ligated at the root of the hemorrhoids through the actions of the pushing cylinder 400 and the ring pushing device 900;

the ring pushing device 900 can be connected to the push cylinder 400 through a thread, so that the ring pushing device 900 can be used for one time, and the ring pushing device 900 can be replaced according to different patients;

the outer end of the shell 100 is also provided with anti-skid grains 110 to increase the friction force with the hand;

a fixing sleeve 620 is fixedly embedded in the mounting frame 440, and the second pull rope 600 passes through the mounting frame 440 through the fixing sleeve 620;

the working principle is as follows: when in use, the ligation ring is firstly arranged on the ring pushing device 900, then the pushing cylinder 400 is pushed into the shell 100, and the fixing block 700 compresses the power spring 710; therefore, the rack 430 drives the gear 460 and the ratchet 500 to rotate, and through the action of the check pawl 520, the ratchet 500 and the gear 460 can only rotate clockwise, and the to-be-pushed barrel 400 moves into the casing 100 to the maximum extent; at this time, since the gear 460 can only rotate in one direction, the position of the push cylinder 400 is relatively fixed after the rack 430 is meshed with the gear 460; then the adsorption head 310 is aligned to the hemorrhoids of the patient, then the trigger 130 is pressed in a reciprocating manner manually, the trigger 130 drives the first pulling rope 250 to move, the first pulling rope 250 pulls the push rod 220 to slide under the action of the fixed pulley 120, so the push rod 220 and the piston plate 210 slide in a reciprocating manner in the piston cylinder 200 under the action of the return spring 240, and meanwhile, the piston cylinder 200 and the negative pressure cylinder 300 form negative pressure through the cooperation of the first one-way valve 270 and the second one-way valve 281, the negative pressure cylinder 300 adsorbs the hemorrhoids through the adsorption head 310, and then according to the size of the hemorrhoids, a doctor can control the frequency and the force of the trigger 130 to be pulled, so that the size of the negative pressure adsorption force is controlled; after the hemorrhoids are completely absorbed in the adsorption head 310; when the dial plate 140 is toggled upwards, the adjusting protrusion 142 extrudes the elastic sheet 150 when the dial plate 140 moves upwards, meanwhile, the dial plate 140 retracts the second pull rope 600, the second pull rope 600 drives the check pawl 520 to rotate against the resistance of the torsion spring 540, and when the check pawl 520 leaves the ratchet 500 at a moment when the ratchet 500 is not engaged; the elastic force of the power spring 710 is released instantly, so the power spring 710 drives the push cylinder 400 to slide outwards, meanwhile, the rack 430 drives the gear 460 and the ratchet 500 to rotate anticlockwise, and when the push cylinder 400 slides outwards, the ligation ring is pushed out to be ligated at the root of the hemorrhoid through the action of the ring pushing device 900; after the operation is completed, the air outlet valve 810 is manually controlled to discharge the air in the piston cylinder 200 and the negative pressure cylinder 300, and then the negative pressure cylinder 300 is taken down from the hemorrhoids.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a disposable negative pressure haemorrhoids ligation device which characterized in that: comprises that

A housing (100);

a piston cylinder (200);

a negative pressure cylinder (300);

a push cylinder (400);

a ratchet (500);

a check pawl (520);

a second pull cord (600);

a guide wheel (610) and a fixed block (700);

a trigger (130) is rotatably connected in the shell (100) through a first rotating shaft (131), and a shifting plate (140) is rotatably connected in the shell (100) through a second rotating shaft (141);

the piston cylinder (200) is fixedly connected in the shell (100), a piston plate (210) is connected in the piston cylinder (200) in a sliding mode, and the piston plate (210) is fixedly connected with a sliding plate (230) through a push rod (220); a return spring (240) is fixedly connected between the sliding plate (230) and the piston cylinder (200); the push rod (220) is also fixedly connected with a first pull rope (250), and one end of the first pull rope (250) penetrates through the fixed pulley (120) to be fixedly connected with the trigger (130); the fixed pulley (120) is fixedly arranged in the shell (100);

one end of the piston cylinder (200) is connected with a connecting pipe (260) in an airtight manner, the connecting pipe (260) is connected with a negative pressure cylinder (300) in an airtight manner, a pipeline (280) is fixedly connected to the piston cylinder (200), the pipeline (280) is located at the outer end of the shell (100), and a second one-way valve (281) is arranged on the pipeline (280); a first one-way valve (270) is arranged on the connecting pipe (260); the negative pressure cylinder (300) is fixedly connected to the shell (100);

the push cylinder (400) is sleeved on the negative pressure cylinder (300), the push cylinder (400) is connected to the shell (100) in a sliding mode, a fixing block (700) is fixedly connected to the push cylinder (400) located in the shell (100), and a power spring (710) is fixedly connected between the fixing block (700) and the inner top end of the shell (100);

the bottom end of the push cylinder (400) is fixedly connected with a rack (430), the inner bottom end of the shell (100) is fixedly connected with a mounting frame (440), the mounting frame (440) is rotatably connected with a gear (460) through a third rotating shaft (450), and the ratchet wheel (500) is coaxially and fixedly connected with the gear (460); the gear (460) is meshed with the rack (430);

the bottom end of the mounting frame (440) is fixedly connected with a fixed seat (510), a fourth rotating shaft (530) is rotatably connected to the fixed seat (510), the check pawl (520) is fixedly connected with the fourth rotating shaft (530), a torsion spring (540) is sleeved on the fourth rotating shaft (530), and the torsion spring (540) is clamped with the fixed seat (510); the torsion spring (540) drives the check pawl (520) to be clamped with the ratchet wheel (500) through the rotating shaft;

the position of the non-return pawl (520) corresponding to the inner bottom end of the shell (100) is fixedly provided with a guide wheel (610), one end of the second pull rope (600) is fixedly connected with the non-return pawl (520), and the other end of the second pull rope (600) penetrates through the guide wheel (610) and the mounting frame (440) to be fixedly connected with the shifting plate (140).

2. The disposable negative pressure hemorrhoid ligation device according to claim 1, wherein: and also comprises

A mounting base (160);

an elastic sheet (150) and an adjusting protrusion (142);

an adjusting protrusion (142) is formed on the shifting plate (140), the elastic sheet (150) is fixedly connected in the shell (100) through the mounting seat (160), and the elastic sheet (150) is abutted against the adjusting protrusion (142).

3. The disposable negative pressure hemorrhoid ligation device according to claim 1, wherein: also comprises

An adjustment spring (170);

an adjusting spring (170) is fixedly connected between the trigger (130) and the inner wall of the shell (100).

4. The disposable negative pressure hemorrhoid ligation device according to claim 1, wherein: and also comprises

An exhaust pipe (800) and an exhaust valve (810);

the piston cylinder (200) is further fixedly connected with an exhaust pipe (800), and the exhaust pipe (800) penetrates through the shell (100) and is fixedly connected with an exhaust valve (810).

5. The disposable negative pressure hemorrhoid ligation device according to claim 1, wherein: also comprises

A positioning sleeve (410);

the locating sleeve (410) is fixedly connected in the shell (100), and the push cylinder (400) penetrates through and is connected to the locating sleeve (410) in a sliding mode.

6. The disposable negative pressure hemorrhoid ligation device according to claim 1, wherein: the rack (430) is fixedly connected to the bottom end of the push cylinder (400) through a connecting rod (420).

7. The disposable negative pressure hemorrhoid ligation device according to claim 1, wherein: one end of the negative pressure cylinder (300) is fixedly provided with an adsorption head (310).

8. The disposable negative pressure hemorrhoid ligation device according to claim 1, wherein: one end of the push cylinder (400) is also fixedly provided with a ring pushing device (900).

9. The disposable negative pressure hemorrhoid ligation device according to claim 1, wherein: the outer end of the shell (100) is also provided with anti-skid grains (110).

10. The disposable negative pressure hemorrhoid ligation device according to claim 1, wherein: a fixing sleeve (620) is fixedly embedded in the mounting frame (440), and the second pull rope (600) penetrates through the mounting frame (440) through the fixing sleeve (620).