CN113197610B

CN113197610B - Disposable automatic hemorrhoid ligation device

Info

Publication number: CN113197610B
Application number: CN202110409057.7A
Authority: CN
Inventors: 施俭; 向长林
Original assignee: Suzhou Beinuo Medical Instruments Co Ltd
Current assignee: Suzhou Beinuo Medical Instruments Co Ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2022-07-01
Anticipated expiration: 2041-04-16
Also published as: CN113197610A

Abstract

The invention relates to the technical field of ligation device medical treatment, and discloses a disposable automatic hemorrhoid ligation device which comprises a percussion shell, a ligation rubber ring and a negative pressure joint, wherein a fixed handle is arranged at the tail end below the percussion shell, a movable handle is arranged in front of the fixed handle, the negative pressure joint is arranged at the tail end of the percussion shell, the end part of the movable handle is rotatably connected with the percussion shell through a rotating shaft, a percussion assembly is arranged above the movable handle, and the percussion assembly consists of a percussion block and a first compression spring. Be connected through negative pressure straw and vacuum machine, inhale the negative pressure lumen intraduct with the patient affected part, after the affected part arrives the trigger bar of negative pressure lumen pipe tail end, make the trigger bar move backward, the doctor can be through the translucent cover of negative pressure straw afterbody through the distance that the locating piece of observing the trigger bar afterbody removed, should be provided with the scale mark through the translucent cover outside, so that the removal degree of better observation locating piece, judge the degree that patient disease department inhales in the negative pressure lumen.

Description

Disposable automatic hemorrhoid ligation device

Technical Field

The invention relates to the technical field of ligation device medical treatment, in particular to a disposable automatic hemorrhoid ligation device.

Background

The ligation device adopts cardia peripheral vascular dissection operation for treatment, is accurate in hemostasis effect, simple in operation and wide in adaptation syndrome, then necrosis at the ligation position falls off to form shallow ulcer, compact scar tissue is generated in short time, and thrombus occlusion is formed in nearby varicose veins. A hemorrhoid ligation device is a medical device used for treating internal hemorrhoid, mixed hemorrhoid, lower sigmoid colon and rectal polyp. By utilizing the transparent suction head of the ligation device and the ring pushing cylinder with a plurality of observation holes, the blind vision phenomenon during ligation can be improved, and the reliability and the accuracy of ligation are enhanced.

When the hemorrhoid ligation device is used, a ligation rubber ring is arranged at the end part of the ligation device, then a mole root is sucked into the end part of the ligation device by using negative pressure, and the ligation rubber ring is pushed out of the end part of the ligation device by driving a push rod through a movable handle so as to be ligated on the mole root, thereby completing the ligation operation; however, in clinical operation, ligation cannot be completed once, for example, a ligation rubber ring falls off, the ligation is not performed at a designated position, or the ligation is broken, a mole root needs to be subjected to ligation for many times, negative pressure can only be cancelled at the moment, the mole root is pushed out of the ligation device, and the ligation rubber ring is reinstalled to perform new ligation, so that greater pain is brought to a patient, even the mole root is cracked, the operation cannot be performed, and the like; and when the nevus passes through the end of the negative pressure suction ligation device, the suction degree of the nevus can be judged only by watching the negative pressure index on the vacuum machine, but the suction degree can not be accurately judged due to different hemorrhoid inflammation degrees (such as size) of different patients and different suction degrees under the same pressure, and further the operation failure is caused.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a disposable automatic hemorrhoid ligation device, which has the advantages of capability of performing secondary ligation, perfection of the operation, capability of accurately observing the suction degree of nevus roots and the like, and solves the problems that only one-time ligation can be performed and the suction degree cannot be accurately judged at one time.

(II) technical scheme

In order to solve the technical problems that only one ligation can be carried out once and the degree of inhalation cannot be accurately judged, the invention provides the following technical scheme: a disposable automatic hemorrhoid ligation device comprises a percussion shell, a ligation rubber ring and a negative pressure joint, wherein a fixed handle is arranged at the tail end below the percussion shell, a movable handle is arranged in front of the fixed handle, the negative pressure joint is arranged at the tail part of the percussion shell, the end part of the movable handle is rotationally connected with the percussion shell through a rotating shaft, a percussion assembly is arranged above the movable handle, the percussion assembly consists of a percussion block and a first compression spring, the first compression spring is arranged at the front end of the percussion block, a first percussion connecting rod is arranged in the middle of the front end of the percussion block, the first percussion connecting rod extends outside the percussion shell, a second compression spring is arranged on the inner side of the middle part of the first percussion connecting rod, the end part of the second compression spring is provided with a second percussion connecting rod, and a percussion locking block is arranged below the end part of the second compression spring, the inside negative pressure straw that is provided with of second percussion connecting rod, negative pressure straw tip is provided with the ligation subassembly, the inside trigger bar that is provided with of negative pressure straw, the trigger bar afterbody is provided with the locating piece, first percussion connecting rod outside is provided with fixed loop bar, fixed loop bar afterbody pass through threaded connection pipe with percussion shell tip threaded connection.

Preferably, a movable handle mounting groove is formed in the middle of the lower portion of the percussion shell, the rotating shaft is located in the middle of the movable handle mounting groove, the movable handle mounting groove extends into the percussion shell, sector teeth are arranged at the end portion of the movable handle, and a reset spring is arranged between the movable handle and the fixed handle.

Preferably, the bottom of the firing block is provided with a bar-shaped tooth, the bar-shaped tooth is meshed with the sector-shaped tooth, guide blocks are arranged on two sides of the firing block, a guide groove is formed in the position, right opposite to the guide block, of the firing shell, one end of the first compression spring is fixedly connected with the front end of the firing block, and the other end of the first compression spring is fixedly connected with the front end of the inner cavity of the firing shell.

Preferably, one end of the first firing connecting rod is fixedly connected with the front end of the firing block, a secondary firing moving groove is formed in the middle of the first firing connecting rod and faces the position of the firing locking block, a groove is formed in the end of the first firing connecting rod, and a limiting convex ring is arranged at the middle of the first firing connecting rod and is located at the tail end of the second compression spring.

Preferably, the front end of the second compression spring is connected with the second firing connecting rod, the second compression spring is connected with the limiting convex ring, and the top of the firing locking block is fixedly connected with the lower part of the end part of the second compression spring, so that the firing locking block controls the end part of the second compression spring.

Preferably, the percussion locking piece includes arc base, arc lug and spacing spring, the arc base both sides are provided with the wedge, the arc lug is fixed to be set up arc base top middle part, arc lug and second compression spring tip below fixed connection, spacing spring is fixed in arc base below.

Preferably, a negative pressure cavity tube is arranged at the end part of the negative pressure suction tube, the negative pressure cavity tube is of a funnel-shaped structure, the ligation component is fixed on the outer side of the negative pressure cavity tube, the tail part of the negative pressure suction tube is connected with the negative pressure joint, and a transparent cover is arranged at the position, right opposite to the positioning block, of the negative pressure suction tube.

Preferably, the ligation assembly comprises a ligation rubber ring, a fixed port, a ligation transmission member and a rubber ring fixing groove, wherein the fixed port is fixedly connected with the outer side of the negative pressure cavity tube, the fixed port is of a circular tube-shaped structure, a plurality of positioning grooves are formed in the periphery of the fixed port, the ligation transmission member is rotatably connected with the positioning grooves, and the rubber ring fixing groove is formed in the tail of the positioning groove.

Preferably, the ligation transmission part comprises three transmission rods, an arc-shaped groove is formed in the end of each transmission rod, and one side, far away from the rubber ring fixing groove, of each arc-shaped groove is lower than the other side of each arc-shaped groove.

(III) advantageous effects

Compared with the prior art, the invention provides a disposable automatic hemorrhoid ligation device, which has the following beneficial effects:

1. this disposable automatic haemorrhoids ligation device, be connected with the vacuum machine through the negative pressure straw, inhale the negative pressure cavity intraduct with the patient affected part, after the affected part arrives at the trigger bar of negative pressure cavity pipe tail end, make the trigger bar remove backward, the doctor can pass through the translucent cover of negative pressure straw afterbody through the distance that the locating piece of observing the trigger bar afterbody removed, should be provided with the scale mark through the translucent cover outside, so that the removal degree of better observation locating piece, judge the degree that patient disease department inhales the negative pressure cavity intraductal.

2. The disposable automatic hemorrhoid ligation device is connected with the first firing connecting rod through the firing block, so that the first firing connecting rod can move forwards, when the first firing connecting rod is used for moving forwards, the ligation transmission part is pushed, and a ligation rubber ring on the ligation transmission part moves forwards under the driving of the ligation transmission part until the ligation transmission part is separated, and is ejected forwards to be ligated on an affected part, so that the primary hemorrhoid ligation operation is completed.

3. This disposable automatic haemorrhoids ligation device, make the upwards jack-up of percussion locking piece through spacing spring's tensile force, and keep off in second compression spring the place ahead through the arc lug, carry on spacingly to it, then when the secondary percussion shifting chute that first percussion connecting rod middle part was seted up removes to the arc base one side of percussion locking piece, extrude the wedge through secondary percussion shifting chute, make the arc base move down, wherein fixed loop bar is just seted up the locking groove to the position of arc base, make the percussion locking piece return the locking inslot portion, further make the arc lug break away from second compression spring, then second compression spring release elasticity, act on second percussion connecting rod, make second percussion connecting rod move forward, realize secondary percussion.

4. This disposable automatic haemorrhoids ligation device looses under the state through first compression spring, supports the percussion piece for the percussion piece is relatively fixed under the condition of not receiving external force, can not remove, and when the fan-shaped tooth of bar tooth cooperation through its bottom moves forward, backward power is applyed to the percussion piece to first compression spring, avoids the percussion piece quick travel under the drive of activity handle, and then has further prevented that one, the secondary percussion of ligation device front end goes on in step.

5. This disposable automatic haemorrhoids ligation device, make it accomplish the percussion ligation through first percussion connecting rod, break away from the arc wall when first ligation rubber ring, first percussion connecting rod continues to push forward the ligation driving medium and rotates this moment, and the back transfer line of ligation driving medium rotates out in the fluting of first percussion connecting rod tip, collude the ligation rubber ring inside the rubber ring fixed slot through the arc wall that its top front end is lower, then the secondary percussion shifting chute in the middle part of first percussion connecting rod pushes down the percussion locking piece, make the second percussion connecting rod launch forward under the effect of second compression spring, the second percussion connecting rod tip pushes the ligation driving medium once more, accomplish secondary ligation, prevent that one ligation operation can't reach the operation effect, need inhale again in the negative pressure chamber to patient department, make the operation time increase, bring more injury to the patient.

Drawings

FIG. 1 is a schematic overall perspective view of the present invention;

FIG. 2 is a schematic diagram of the overall explosive structure of the present invention;

FIG. 3 is an overall internal cross-sectional structural view of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3A;

FIG. 5 is an enlarged view of a portion of FIG. 3B;

FIG. 6 is an enlarged view of a portion of FIG. 3C according to the present invention;

FIG. 7 is one of the cross-sectional internal views of the firing housing of the present invention;

FIG. 8 is a second cross-sectional view of the interior of the firing housing of the present invention;

FIG. 9 is an exploded view of the cocking coupling tube of the present invention;

FIG. 10 is an enlarged view of a portion of FIG. 9 at D according to the present invention;

fig. 11 is a schematic view of the enlarged structure at E of fig. 9 according to the present invention.

In the figure: 1. a percussion housing; 11. fixing a handle; 12. a movable handle; 121. a rotating shaft; 122. sector-shaped teeth; 123. a return spring; 124. a locking key; 13. a movable handle mounting groove; 14. a guide groove; 2. sleeving and binding a rubber ring; 3. a negative pressure joint; 4. a firing assembly; 41. a percussion block; 411. a bar-shaped tooth; 412. a guide block; 42. a first compression spring; 5. a first firing link; 51. a second compression spring; 52. a secondary percussion moving groove; 53. grooving; 54. a limit convex ring; 6. a second firing link; 61. firing the locking block; 611. an arc-shaped base; 612. an arc-shaped bump; 613. a limiting spring; 614. a wedge block; 7. a negative pressure suction pipe; 71. a negative pressure lumen; 72. a transparent cover; 8. a ligation assembly; 81. a fixed port; 82. sheathing and binding a transmission piece; 821. a transmission rod; 822. an arc-shaped slot; 83. a rubber ring fixing groove; 84. positioning a groove; 9. a trigger lever; 91. positioning a block; 10. fixing the loop bar; 101. a threaded connection pipe; 102. and locking the grooves.

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. 1-11, a disposable automatic hemorrhoid ligation device comprises a percussion shell 1, a ligation rubber ring 2 and a negative pressure joint 3, wherein a fixed handle 11 is arranged at the tail end of the lower part of the percussion shell 1, a movable handle 12 is arranged in front of the fixed handle 11, the negative pressure joint 3 is arranged at the tail part of the percussion shell 1, the end part of the movable handle 12 is rotatably connected with the percussion shell 1 through a rotating shaft 121, a percussion assembly 4 is arranged above the movable handle 12, the percussion assembly 4 is composed of a percussion block 41 and a first compression spring 42, the first compression spring 42 is arranged at the front end of the percussion block 41, a first percussion connecting rod 5 is arranged in the middle of the front end of the percussion block 41, the first percussion connecting rod 5 extends out of the percussion shell 1, a second compression spring 51 is arranged at the inner side of the middle part of the first percussion connecting rod 5, a second percussion connecting rod 6 is arranged at the end part of the second compression spring 51, a percussion block 61 is arranged below the end part of the second compression spring 51, the inside negative pressure straw 7 that is provided with of second percussion connecting rod 6, the negative pressure straw 7 tip is provided with ligation subassembly 8, and the inside trigger bar 9 that is provided with of negative pressure straw 7, the 9 afterbody of trigger bar are provided with locating piece 91, and first percussion connecting rod 5 outside is provided with fixed loop bar 10, and fixed loop bar 10 afterbody passes through threaded connection pipe 101 and percussion shell 1 tip threaded connection.

Further, trigger shell 1 below middle part is provided with movable handle mounting groove 13, pivot 121 is located movable handle mounting groove 13 middle part, movable handle mounting groove 13 extends inside trigger shell 1, movable handle 12 tip is provided with fan-shaped tooth 122, be provided with reset spring 123 between movable handle 12 and the fixed handle 11, rotate through movable handle 12, and drive the fan-shaped tooth 122 of top, the bar tooth 411 of cooperation trigger piece 41 bottom, and then make trigger piece 41 move forward, movable handle 12 tip is provided with dead lock key 124 in addition, make movable handle 12 can lock after holding first.

Further, the bottom of the trigger block 41 is provided with a bar-shaped tooth 411, the bar-shaped tooth 411 is meshed with the sector-shaped teeth 122, guide blocks 412 are arranged on two sides of the trigger block 41, a guide groove 14 is formed in the position, facing the guide block 412, of the trigger housing 1, one end of the first compression spring 42 is fixedly connected with the front end of the trigger block 41, the other end of the first compression spring 42 is fixedly connected with the front end of the inner cavity of the trigger housing 1, the trigger block 41 is abutted to the front end of the first compression spring 42 in a loosening state, so that the trigger block 41 is relatively fixed without external force and cannot move, when the bar-shaped tooth 411 at the bottom of the trigger block is matched with the sector-shaped teeth 122 to move forwards, the first compression spring 42 applies backward force to the trigger block 41, the trigger block 41 is prevented from moving fast under the driving of the movable handle 12, and primary and secondary triggering at the front end of the ligation device is prevented from being performed synchronously.

Further, one end of the first firing connecting rod 5 is fixedly connected with the front end of the firing block 41, a secondary firing moving groove 52 is arranged in the middle of the first firing connecting rod 5 and faces the position of the firing locking block 61, a groove 53 is arranged at the end of the first firing connecting rod 5, a limiting convex ring 54 is arranged at the tail end of the second compression spring 51 in the middle of the first firing connecting rod 5, the first firing connecting rod 5 can move forward by connecting the firing block 41 with the first firing connecting rod 5, and when the first firing connecting rod 5 moves forward, pressure is applied to the second compression spring 51 through the limiting convex ring 54 in the first firing connecting rod.

Further, the front end of the second compression spring 51 is connected with the second firing link 6, the second compression spring 51 is connected with the limit convex ring 54, and the top of the firing locking block 61 is fixedly connected with the lower part of the end of the second compression spring 51, so that the firing locking block 61 controls the end of the second compression spring 51, the second compression spring 51 stores force and applies pressure to the second firing link 6 under the action of the limit convex ring 54 of the second compression spring 51 in the first firing link 5, and at this time, the top of the firing locking block 61 controls the second compression spring 51, so that the front end of the second compression spring 51 cannot move.

Further, the percussion locking block 61 comprises an arc base 611, an arc protrusion 612 and a limiting spring 613, wedge blocks 614 are arranged on two sides of the arc base 611, the arc protrusion 612 is fixedly arranged in the middle of the upper side of the arc base 611, the arc protrusion 612 is fixedly connected with the lower side of the end of the second compression spring 51, the limiting spring 613 is fixed below the arc base 611, the percussion locking block 61 is pushed upwards by the tensile force of the limiting spring 613, and is blocked in front of the second compression spring 51 through the arc protrusion 612 to limit the second compression spring, then when the secondary percussion moving groove 52 formed in the middle of the first percussion connecting rod 5 moves to one side of the arc base 611 of the percussion locking block 61, the wedge block 614 is pressed through the secondary percussion moving groove 52, so that the arc base 611 moves downwards, wherein the locking groove 102 is formed in the position where the fixed sleeve 10 faces the arc base 611, so that the percussion locking block 61 returns to the inside the locking groove 102, further disengaging the arcuate tab 612 from the second compression spring 51, the second compression spring 51 then releases the spring force acting on the second firing link 6, moving the second firing link 6 forward.

Furthermore, a negative pressure cavity tube 71 is arranged at the end of the negative pressure suction tube 7, the negative pressure cavity tube 71 is of a funnel-shaped structure, the ligation assembly 8 is fixed at the outer side of the negative pressure cavity tube 71, the tail of the negative pressure suction tube 7 is connected with the negative pressure joint 3, a transparent cover 72 is arranged at the position, right opposite to the positioning block 91, of the negative pressure suction tube 7, the tail of the negative pressure suction tube 7 is connected with an external vacuum machine through the negative pressure joint 3, the affected part of the patient is sucked into the negative pressure cavity tube 71, after the affected part reaches the trigger rod 9 at the tail end of the negative pressure cavity tube 71, the trigger rod 9 moves backwards, a doctor can judge the degree of the affected part of the patient sucked into the negative pressure cavity tube 71 by observing the moving distance of the positioning block 91 at the tail of the trigger rod 9 through the transparent cover 72 at the tail of the negative pressure suction tube 7, wherein a scale mark is arranged at the outer side of the transparent cover 72, so that the moving degree of the positioning block 91 can be better observed.

Furthermore, the ligation component 8 comprises a ligation rubber ring 2, a fixed port 81, a ligation transmission member 82 and a rubber ring fixing groove 83, the fixed port 81 is fixedly connected with the outer side of the negative pressure cavity tube 71, the fixed port 81 is of a circular tube structure, a plurality of positioning grooves 84 are formed in the periphery of the fixed port 81, the ligation transmission member 82 is rotatably connected with the positioning grooves 84, the rubber ring fixing groove 83 is formed in the tail portion of the positioning grooves 84, when the first trigger connecting rod 5 moves forwards, the ligation transmission member 82 is pushed, the ligation rubber ring 2 on the ligation transmission member 82 moves forwards until being separated from the ligation transmission member 82 under the driving of the ligation transmission member 82, and the ligation is ejected forwards to be ligated to the affected part.

Further, the ligation transmission member 82 is composed of three transmission rods 821, the end of the transmission rod 821 is provided with an arc-shaped slot 822, one side of the arc-shaped slot 822 far away from the rubber ring fixing groove 83 is lower than the other side, a ligation rubber ring 2 is firstly sleeved by the arc-shaped slot 822 at the end of the transmission rod 821, then the first firing link 5 is used for completing the firing ligation, when the first ligation rubber ring 2 is separated from the arc-shaped slot 822, the first firing link 5 continues to push the ligation transmission member 82 forwards to rotate, the next transmission rod 821 of the ligation transmission member 82 rotates out from the notch 53 at the end of the first firing link 5, the ligation rubber ring 2 in the rubber ring fixing groove 83 is hooked by the arc-shaped slot 822 with the lower top front end, then the secondary firing moving slot 52 in the middle of the first firing link 5 presses down the firing locking block 61, so that the second firing link 6 is ejected forwards under the action of the second compression spring 51, the end of the second firing link 6 pushes the ligation transmission member 82 again to complete the secondary ligation.

The working principle is as follows: when the percussion vacuum percussion device is used, the movable handle is locked through the locking key 124 on the movable handle 12, then the fixed loop bar 10 is taken down, the two ligation rubber rings 2 are sequentially sleeved on the rubber ring fixing groove 83 of the ligation component 8 and the arc-shaped groove 822 of the ligation transmission part 82, then the fixed loop bar 10 is in threaded connection with the percussion shell 1 again in a rotating mode, the installation of the ligation rubber rings 2 of the ligation device is completed, and then the negative pressure connector 3 at the tail part of the percussion shell 1 is connected with an external vacuum machine.

When carrying out the ligation operation to the patient, after finding the sick affected part of patient, the fixed handle 11 is handed to the doctor, aim at the sick affected part with the negative pressure lumen 71 of ligation ware tip, and start the negative pressure switch, utilize the vacuum machine to be connected with negative pressure straw 7, inhale inside negative pressure lumen 71 with the sick part of patient, after the affected part arrives at the trigger bar 9 of negative pressure lumen 71 tail end, make trigger bar 9 remove backward, the doctor can be through the translucent cover 72 of negative pressure straw 7 afterbody through the distance that the locating piece 91 of observing trigger bar 9 afterbody removed, judge the degree that the sick affected part of patient inhales in the negative pressure lumen 71, wherein the translucent cover 72 outside is provided with the scale mark, so that the better removal degree of observing locating piece 91.

Then, the doctor releases the locking key 124, holds the movable handle 12, and rotates the movable handle 12 to drive the upper sector-shaped teeth 122 to match with the strip-shaped teeth 411 at the bottom of the trigger block 41, so that the trigger block 41 moves forward, the trigger block 41 is connected with the first trigger connecting rod 5, so that the first trigger connecting rod 5 can move forward, when the first trigger connecting rod 5 moves forward, the ligation transmission member 82 is pushed, the ligation rubber ring 2 on the ligation transmission member 82 moves forward under the driving of the ligation transmission member 82 until being separated from the ligation transmission member 82, and the ligation is ejected forward to be ligated on an affected part, so that the hemorrhoid ligation operation is completed, the locking key 124 is pressed down to lock the movable handle 12, and at this time, the ligation device does not need to be separated from the affected part of the patient.

When the first ligation is finished, the doctor observes the ligation result between the ligation rubber ring 2 and the affected part to judge whether the operation is successful, when the primary ligation can not finish the hemorrhoid ligation operation, the doctor releases the locking key 124 again, grips the movable handle 12 again, moves the movable handle 12, makes the first firing connecting rod 5 move forward continuously, at this time, the secondary firing moving groove 52 arranged in the middle of the first firing connecting rod 5 moves to one side of the arc-shaped base 611 of the firing locking block 61, the wedge block 614 is pressed by the double firing moving slot 52, causing the arc base 611 to move downward, wherein, the position of the fixed loop bar 10 facing the arc-shaped base 611 is provided with a locking groove 102, so that the percussion locking block 61 retracts into the locking groove 102, further the arc-shaped convex block 612 is separated from the second compression spring 51, the second compression spring 51 then releases the spring force and acts on the second firing link 6, moving the second firing link 6 forward.

When the first ligation rubber ring 2 is separated from the arc-shaped groove 822, the first firing connecting rod 5 continues to push the ligation transmission member 82 forward to rotate, the rear transmission rod 821 of the ligation transmission member 82 rotates out of the groove 53 at the end of the first firing connecting rod 5, the ligation rubber ring 2 in the rubber ring fixing groove 83 is hooked through the arc-shaped groove 822 with the lower top front end, then the secondary firing moving groove 52 in the middle of the first firing connecting rod 5 presses the firing locking block 61 downwards, so that the second firing connecting rod 6 is ejected forward under the action of the second compression spring 51, the end of the second firing connecting rod 6 pushes the ligation transmission member 82 again, secondary ligation is completed, the doctor closes the negative pressure switch, the negative pressure cavity tube 71 loses negative pressure, and then the doctor takes out the ligation device to complete the ligation operation of the hemorrhoid patient.

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 automatic haemorrhoids ligation device, includes percussion shell (1), ligation rubber ring (2) and negative pressure joint (3), percussion shell (1) below tail end is provided with fixed handle (11), fixed handle (11) the place ahead is provided with movable handle (12), its characterized in that: the negative pressure joint (3) is arranged at the tail of the percussion shell (1), the end part of the movable handle (12) is rotatably connected with the percussion shell (1) through a rotating shaft (121), a percussion assembly (4) is arranged above the movable handle (12), the percussion assembly (4) consists of a percussion block (41) and a first compression spring (42), the first compression spring (42) is arranged at the front end of the percussion block (41), a first percussion connecting rod (5) is arranged in the middle of the front end of the percussion block (41), the first percussion connecting rod (5) extends to the outside of the percussion shell (1), a second compression spring (51) is arranged on the inner side of the middle part of the first percussion connecting rod (5), a second percussion connecting rod (6) is arranged at the end part of the second compression spring (51), and a percussion locking block (61) is arranged below the end part of the second compression spring (51), a negative pressure suction pipe (7) is arranged inside the second firing connecting rod (6), a ligation assembly (8) is arranged at the end part of the negative pressure suction pipe (7), a trigger rod (9) is arranged inside the negative pressure suction pipe (7), a positioning block (91) is arranged at the tail part of the trigger rod (9), a fixed loop rod (10) is arranged outside the first firing connecting rod (5), and the tail part of the fixed loop rod (10) is in threaded connection with the end part of the firing shell (1) through a threaded connecting pipe (101); one end of the first firing connecting rod (5) is fixedly connected with the front end of the firing block (41), a secondary firing moving groove (52) is formed in the position, opposite to the firing locking block (61), of the middle of the first firing connecting rod (5), a notch (53) is formed in the end of the first firing connecting rod (5), and a limiting convex ring (54) is arranged at the tail end, located on the second compression spring (51), of the middle of the first firing connecting rod (5); the front end of the second compression spring (51) is connected with the second firing connecting rod (6), the second compression spring (51) is connected with the limit convex ring (54), and the top of the firing locking block (61) is fixedly connected with the lower part of the end part of the second compression spring (51), so that the firing locking block (61) controls the end part of the second compression spring (51); the percussion locking block (61) comprises an arc-shaped base (611), an arc-shaped protruding block (612) and a limiting spring (613), wedge blocks (614) are arranged on two sides of the arc-shaped base (611), the arc-shaped protruding block (612) is fixedly arranged in the middle of the upper portion of the arc-shaped base (611), the arc-shaped protruding block (612) is fixedly connected with the lower portion of the end portion of a second compression spring (51), and the limiting spring (613) is fixed below the arc-shaped base (611); the ligation component (8) consists of a ligation rubber ring (2), a fixed port (81), a ligation transmission member (82) and a rubber ring fixing groove (83), the fixed port (81) is fixedly connected with the outer side of the negative pressure cavity tube (71), the fixed port (81) is of a circular tube-shaped structure, a plurality of positioning grooves (84) are formed in the peripheral side of the fixed port (81), the ligation transmission member (82) is rotatably connected with the positioning grooves (84), and the rubber ring fixing groove (83) is formed in the tail of the positioning grooves (84); the ligation transmission component (82) consists of three transmission rods (821), an arc-shaped groove (822) is arranged at the end part of each transmission rod (821), one side, far away from the rubber ring fixing groove (83), of the arc-shaped groove (822) is lower than the other side, a ligation rubber ring is firstly sleeved on the arc-shaped groove at the end part of each transmission rod, then a first trigger connecting rod is used for completing triggered ligation, when the first ligation rubber ring is separated from the arc-shaped groove, the first trigger connecting rod continuously pushes the ligation transmission component forwards to rotate, the next transmission rod of the ligation transmission component rotates out of a groove at the end part of the first trigger connecting rod, the ligation rubber ring in the rubber ring fixing groove is hooked through the arc-shaped groove with the lower top front end, then a secondary trigger moving groove in the middle of the first trigger connecting rod downwards presses a trigger ejection locking block, so that the second trigger connecting rod triggers forwards under the action of a second compression spring, and the end part of the second connecting rod pushes the ligation transmission component again, and finishing the secondary ligation.

2. The disposable automatic hemorrhoid ligation device according to claim 1, wherein: the utility model discloses a percussion mechanism, including percussion shell (1), pivot (121), activity handle mounting groove (13) and movable handle (12), the middle part in percussion shell (1) below is provided with movable handle mounting groove (13), pivot (121) are located activity handle mounting groove (13) middle part, activity handle mounting groove (13) extend in inside percussion shell (1), activity handle (12) tip is provided with fan-shaped tooth (122), activity handle (12) with be provided with reset spring (123) between fixed handle (11).

3. The disposable automatic hemorrhoid ligation device according to claim 2, wherein: the bottom of the firing block (41) is provided with strip-shaped teeth (411), the strip-shaped teeth (411) are meshed with the sector-shaped teeth (122), guide blocks (412) are arranged on two sides of the firing block (41), a guide groove (14) is formed in the position, right facing the guide blocks (412), of the firing shell (1), one end of a first compression spring (42) is fixedly connected with the front end of the firing block (41), the other end of the first compression spring (42) is fixedly connected with the front end of an inner cavity of the firing shell (1), a movable handle (12) rotates and drives the sector-shaped teeth (122) above the firing block (41) to be matched with the strip-shaped teeth (411) at the bottom of the firing block (41) to enable the firing block (41) to move forwards, the first compression spring (42) is supported against the firing block (41) in a relaxed state, so that the firing block (41) is relatively fixed without external force, and when the strip-shaped teeth (411) at the bottom of the firing block are matched with the sector-shaped teeth (122) to move forwards, the first compression spring (42) applies backward force to the firing block (41), so that the firing block (41) is prevented from moving rapidly under the driving of the movable handle (12), and further primary and secondary firing at the front end of the ligation device is prevented from being carried out synchronously.

4. The disposable automatic hemorrhoid ligation device according to claim 3, wherein: the end part of the negative pressure suction pipe (7) is provided with a negative pressure cavity pipe (71), the negative pressure cavity pipe (71) is of a funnel-shaped structure, the ligation component (8) is fixed on the outer side of the negative pressure cavity pipe (71), the tail part of the negative pressure suction pipe (7) is connected with the negative pressure joint (3), and a transparent cover (72) is arranged at the position, right facing the positioning block (91), of the negative pressure suction pipe (7).