CN209789927U - Reusable anorectal ligation device with automatic wire tightening function - Google Patents

Abstract

The utility model discloses a reusable anorectal ligation device with an automatic wire tightening function, which is gun-shaped as a whole and comprises a handle and a ligation mechanism, wherein the ligation mechanism is detachably connected with the handle, and a firing mechanism for firing the ligation mechanism and a suction mechanism for providing negative pressure for the ligation mechanism are arranged in the handle; the loop ligature mechanism comprises an inner gun barrel, a push sleeve, a stringing assembly and a filtering assembly, wherein the stringing assembly is used for looping focal tissues, the filtering assembly is used for filtering foreign matters, the push sleeve is sleeved on the inner gun barrel and can move relative to the inner gun barrel, a reset preventing structure used for preventing the push sleeve from resetting after moving is arranged between the push sleeve and the inner gun barrel, and a tightening device used for automatically tightening the stringing assembly is installed on the handle. The utility model discloses can prevent that medical personnel used repeatedly as the mechanism is pricked to cover of consumptive material to can prevent that the foreign matter from getting into inside supporting handle, can avoid infecting, simultaneously, need not many people cooperation can accomplish the tight line, the operation safety.

Description

reusable anorectal ligation device with automatic wire tightening function

Technical Field

the utility model relates to the field of medical equipment, especially, relate to a repeatedly usable type anorectal ligation device with automatic stringing function.

Background

The common method for treating hemorrhoids adopts a ligation operation, and the principle is that a special rubber ring is ligated at the root or the base of the hemorrhoids, and the blood supply of the hemorrhoids is blocked by the elastic retraction force of the rubber ring, so that the hemorrhoids are necrotized, atrophied and shed, thereby achieving the purpose of healing; at present, the instruments for performing the ligation operation generally adopt a ligation device, the ligation device adsorbs superior mucosa of the primary hemorrhoid through vacuum, and the superior artery of the hemorrhoid is immediately blocked after the ligation of elastic threads, so as to achieve the purpose of minimally invasive hemorrhoid.

The existing ligation device on the market is mostly in a hand gun type, the ligation device can only be used once, and under the requirements of low cost and low consumption of medical appliances, the condition that one patient adopts one set of treatment appliance is not beneficial to reducing the medical cost. Meanwhile, most of the existing ligation devices form negative pressure through an external vacuum pump, when the ligation devices are held by hands for operation, the external vacuum pump needs to be additionally operated, the operation condition of the vacuum pump is concerned, the operation is troublesome, the attention of doctors is dispersed, the operation time is long, and the smooth operation is not facilitated.

the patent number is 201610036268X, the invention name is 'repeatedly usable type ligation device', the suction pipe and the push rod part can be disassembled and assembled, one patient corresponds to a set of the replaceable suction pipe and the replaceable push rod, so that the ligation device can be repeatedly used, the use of medical staff is facilitated, and the medical cost is reduced; meanwhile, in order to prevent human tissues from being sucked into the vacuum pump in the negative pressure suction process, a storage tank is arranged between the vacuum pump and the suction pipe.

According to the technical scheme, 1, a set of structure is not provided to prevent the same set of suction tube and push rod from being reused, and if medical care personnel do not replace the suction tube and the push rod due to busy reasons and the like, the problems of bacteria cross infection and the like can occur, so that the treatment and the rehabilitation of patients are not facilitated; 2. the storage tank still needs to be cleaned, and if the storage tank is not cleaned or the disinfection effect of the medical requirement cannot be achieved, bacteria are easy to breed, and the storage tank is not favorable for repeated use. In addition, the suction pipe of the existing ligation device and other parts used for contacting the focus can not realize filtration, and can not effectively prevent human tissues from being sucked into the vacuum pump in the negative pressure suction process. The existing common ligation device can not automatically tighten the elastic thread, and when a focus is ligated, a plurality of persons still need to cooperate to tighten the thread, which affects the holding of medical care personnel on the ligation device and may cause complications.

disclosure of Invention

the utility model discloses a solve the weak point among the prior art, provide a repeatedly usable type anus intestines ligation ware with automatic tight line function, can prevent medical personnel's used repeatedly and construct as the ligation mechanism of consumptive material to can prevent that the foreign matter from getting into inside the supporting handle, can avoid infecting, simultaneously, need not many people cooperation can accomplish tight line, the operation safety.

The technical scheme adopted by the utility model to solve the above problems is to provide a reusable anorectal ligation device with an automatic wire tightening function, which is gun-shaped as a whole and comprises a handle and a ligation mechanism, wherein the ligation mechanism is detachably connected with the handle, and a firing mechanism for firing the ligation mechanism and an attraction mechanism for providing negative pressure for the ligation mechanism are arranged in the handle;

The loop ligature mechanism comprises an inner gun barrel, a pushing sleeve, a stringing component for loop ligaturing focus tissues and a filtering component for filtering foreign matters, wherein the pushing sleeve is sleeved on the inner gun barrel and can displace relative to the inner gun barrel;

The firing mechanism comprises a firing switch, a guide pushing block and a vent pipe top seat, the vent pipe top seat is fixedly connected in the handle, the guide pushing block is connected on the vent pipe top seat in a sliding manner, the firing switch is rotationally connected on the handle and is in transmission connection with the guide pushing block, a tension spring is arranged between the guide pushing block and the vent pipe top seat, and the inner gun tube is detachably connected on the vent pipe top seat;

The suction mechanism comprises a four-way pipe, a negative pressure pump and a pressure relief assembly for relieving pressure of the ligation mechanism, the four-way pipe is provided with a first interface, a second interface, a third interface and a fourth interface, the first interface is communicated with a top seat of the vent pipe, the second interface is communicated with an air suction port of the negative pressure pump through a negative pressure pump connecting conduit, the pressure relief assembly is installed at the third interface, and the fourth interface is connected with a sensor connecting conduit;

An electric control device for controlling the negative pressure pump is also arranged in the handle.

preferably, the wire tightening assembly is mounted on the push sleeve through a fixing ring, the wire tightening assembly comprises an elastic wire, a wire tightening pipe, a wire tightening cap and a wire tightening clamping head, the front end of the elastic wire is provided with the ring sleeve with an adjustable aperture, the middle part of the elastic wire penetrates through the wire tightening pipe, the front end of the wire tightening pipe is provided with the wire tightening cap, the rear end of the wire tightening pipe is provided with the wire tightening clamp connector, the ring sleeve is limited by the wire tightening cap, and the rear end of the elastic wire is limited by the wire tightening clamping head;

The tightening device comprises a winding wheel and a motor driving the winding wheel to rotate, the motor is fixedly installed inside the handle, the motor is in transmission connection with a rotating shaft of the winding wheel, the winding wheel is arranged on the outer side of the handle and located on the rear side of the elastic wire, and the rear end of the elastic wire is connected to the winding wheel.

preferably, the one end of interior barrel is suction nozzle portion, the other end of interior barrel is grafting portion, use the position of suction nozzle portion place as preceding, use grafting portion place position as the back, the fixed intercommunication of grafting portion is in the rear side of suction nozzle portion, be provided with joint portion between suction nozzle portion and the grafting portion, joint portion is close to grafting portion one side, the guide way has been seted up to the symmetry in the joint portion, link up around the guide way, sliding connection has the promotion to overlap the stopper in the guide way, the third joint groove has been seted up to the tank bottom of guide way, the symmetry is provided with first buckle in the joint portion.

Preferably, the specific structure of the anti-reset structure is as follows: the tail end symmetry that promotes the cover is provided with the second buckle, and the one side that is close to interior barrel axis on the promotion cover stopper is provided with second joint groove, and second buckle joint is provided with the third buckle at second joint inslot, and the one side of keeping away from interior barrel axis on the promotion stopper is provided with the third buckle, before the promotion cover takes place the displacement to the internal barrel relatively, and the third buckle is located second joint inslot, promotes the cover and takes place the displacement back to the internal barrel relatively, and the third buckle joint is at third joint inslot.

Preferably, the pressure release subassembly includes the pressure release key, releases lid and compression spring, and the one end and the sliding connection that the pressure release key stretches out the third interface are in the third interface, and pressure release lid threaded connection sets up between pressure release key and the pressure release lid compression spring installs pressure release key sealing washer between pressure release key and the third interface, releases and installs pressure release lid sealing washer between lid and the third interface.

preferably, an exhaust port of the negative pressure pump is connected with an exhaust guide pipe, an exhaust joint is arranged on the exhaust guide pipe, and a one-way valve is arranged in the exhaust joint; the exhaust joint is clamped at the bottom of the handle, and an exhaust joint sealing ring is arranged between the exhaust joint and the handle; the periphery of the negative pressure pump is wrapped with a damping sleeve.

Preferably, a battery and the electric control device are installed inside the handle, a battery bin is arranged in the handle, the battery is installed in the battery bin, the battery is respectively and electrically connected with the electric control device and the negative pressure pump, the negative pressure pump is arranged below the battery, the electric control device is electrically connected with the pressure sensor, a probe of the pressure sensor is arranged in the sensor connecting conduit, one end of the sensor connecting conduit is closed, the other end of the sensor connecting conduit is communicated with the four-way pipe, the negative pressure pump is connected with a power key through a wire, and the power key is installed on the handle; the electric control device is also connected with a display screen, and the display screen is arranged on the handle; the rear part of the handle is provided with a charging port and a light transmitting port, and the charging port is provided with a dustproof protective cover; the light transmitting opening is provided with a light transmitting piece which is convenient for the LED to be pasted for light transmission.

Preferably, the vent pipe top seat comprises a barrel connecting part and a pipeline connecting part, negative pressure channels which are mutually communicated are arranged in the barrel connecting part and the pipeline connecting part, the barrel connecting part and the inner barrel are coaxially arranged, the tail end of the inner barrel is inserted in the barrel connecting part, and the pipeline connecting part is communicated with the suction mechanism;

The bilateral symmetry of barrel connecting portion is provided with the guided way, has seted up first joint groove on the guided way, and the first buckle joint on the interior barrel joint portion is in first joint inslot.

preferably, a left trip key and a right trip key are installed on the handle, the left trip key and the right trip key are respectively matched with the first buckle on the clamping part of the inner gun tube, and an L-shaped retaining wall is arranged in the handle.

preferably, the filtering component comprises a filtering seat, a filtering membrane is arranged in the filtering seat, and a filtering sealing ring is arranged on the outer wall of the filtering seat.

adopt above-mentioned technical scheme, the utility model has the advantages of it is following:

The utility model discloses a mechanism is pricked to cover can dismantle through first buckle and connect on supporting handle, is equipped with left and right trip key simultaneously, and it is convenient to dismantle.

The utility model discloses use tightening means to tighten up the elastic wire automatically, can liberate medical personnel's both hands, need not many people cooperation can accomplish the tight line to make the apparatus grip more stably, improve the operation success rate, reduce the emergence of operation risk and complication.

the utility model discloses a prevent that reset structure accessible third buckle joint prevents barrel and promotion cover in the used repeatedly in the third joint inslot, and when accomplishing once promotion action, it is spacing by the third joint groove on the interior barrel joint portion to promote the cover stopper, and unable return can realize preventing used repeatedly the utility model discloses the function of well cover bundle mechanism (consumptive material), reach the disposable requirement of consumptive material.

The utility model discloses a filtration membrane can prevent that the foreign matter from getting into supporting handle inside from the inside of crossing the filter seat, and it can prevent that the foreign matter from getting into supporting handle inside between filter seat and the interior rifle pipe to filter the sealing washer, and second anti-skidding arris and third anti-skidding arris can make and cross the filter seat and fix in interior rifle intraductally steadily, avoid sliding and drop etc.. The filtering component arranged in the inner gun tube effectively prevents human tissues from being sucked into the negative pressure pump in the negative pressure suction process, the service life of the negative pressure pump can be prolonged, and the cost is saved.

the periphery of the negative pressure pump in the utility model is coated with a damping sleeve (such as a silica gel sleeve), which can reduce vibration and noise; the exhaust joint is provided with a one-way valve which can ensure smooth exhaust. The utility model provides a negative pressure pump sets up in the below of battery, makes the handle structure more compact, reduces the handle volume, simultaneously, with negative pressure pump and battery integration inside the handle, need not to pay attention to external vacuum pump behavior in addition, has avoided dispersion medical personnel's attention, and convenient operation is favorable to going on smoothly of operation.

The utility model discloses a dustproof protecting cover and the joint interference fit that charges, the hole interference fit that corresponds the position on each sealing washer and left handle shell, the right handle shell, they form airtight space with the inside L type barricade of handle simultaneously, effectively protect electrically controlled device, battery and negative pressure pump, avoid external bacterium and sterilization influence. After one case is finished, the dustproof protective cover is pressed in place, and the handle can be sterilized and prepared for reuse next time.

The utility model discloses can prevent that medical personnel reuse from pricking the mechanism as the cover of disposable consumptive material to can prevent that the foreign matter from getting into inside the supporting handle, can avoid cross infection, operate safety, simultaneously, the utility model discloses a tightening means can liberation medical personnel's both hands, need not many people cooperation can accomplish the stringing, reduces the operation risk.

Drawings

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

fig. 2 is a second schematic perspective view of the inside of the handle of the present invention;

Fig. 3 is an external structural view of the present invention;

FIG. 4 is an exploded view of a part of the structure of the present invention;

FIG. 5 is an enlarged partial schematic view at A in FIG. 2;

FIG. 6 is an enlarged partial schematic view at B of FIG. 2;

Fig. 7 is a schematic perspective view of the ligation mechanism of the present invention;

FIG. 8 is an exploded view of the components of FIG. 7;

FIG. 9 is a schematic plan view of the ligation mechanism and the firing mechanism of the present invention;

FIG. 10 is a schematic cross-sectional view taken from above in FIG. 9;

FIG. 11 is a schematic view of a partial cross-sectional structure of the push sleeve of the present invention before moving;

Fig. 12 is a schematic view of the partial section structure of the push sleeve after moving in the present invention;

FIG. 13 is an enlarged partial schematic view at C of FIG. 12;

fig. 14 is a right side view of fig. 3.

Reference numerals: 11. 12 parts of a left handle shell, 13 parts of a left trip key, 14 parts of a right trip key, 15 parts of an L-shaped retaining wall, 16 parts of a battery compartment, 17 parts of a dustproof protective cover and 18 parts of a light-transmitting piece;

21. inner barrel, 22, pushing sleeve, 23, tightening assembly, 24, filtering assembly;

211. the gun barrel comprises a sucker part, a 212, an inserting part, a 213, a clamping part, a 214, a guide groove, a 215, a pushing sleeve limiting block, a 216, a third clamping groove, a 217, a first buckle and a 218 inner gun tube sealing ring;

221. a second buckle 222, a second buckle groove 223, a third buckle 224 and a limit ring;

232. A tightening pipe, 233, a tightening cap, 234, a tightening joint and 235, a ring sleeve; 237. a fixing ring, 238, a clamping position, 239, a first anti-slip edge;

241. A filter seat 242, a filter membrane 243, a filter sealing ring 244, a second anti-slip edge 245 and a third anti-slip edge; 251. a winding wheel, 252 motor control keys;

31. A trigger switch, 32, a guide pushing block, 33, a vent pipe top seat and 34, an extension spring;

321. A guide cavity, 322, a push rod, 323, a transmission block, 324 and a limit step;

331. Barrel connection, 332, pipe connection, 334, guide rail, 335, first snap groove, 336, vent seat gasket, 337, vent seat gasket;

41. a four-way pipe, 42, a negative pressure pump, 43, a pressure relief assembly, 44, a negative pressure pump connecting conduit and 45, a sensor connecting conduit;

421. Exhaust conduit, 422, exhaust joint, 423, check valve, 424, exhaust joint sealing ring, 425, damping sleeve;

431. A pressure relief key, 432, a pressure relief cover, 433, a compression spring, 434, a pressure relief key sealing ring, 435, a pressure relief cover sealing ring;

5. Electric control device, 51 battery, 52 power key, 54 display screen.

Detailed Description

as shown in fig. 1 to 14, the utility model discloses a repeatedly usable type anus intestines ligation ware with automatic tight line function, its whole is rifle shape, including handle and ligation mechanism, ligation mechanism and the detachable connection of handle, the handle includes left handle shell 11 and right handle shell 12, and left handle shell 11 and the mutual lock assembly of right handle shell 12 form the rifle shell, are provided with the firing mechanism that is used for the firing ligation mechanism in the handle and provide the suction mechanism of negative pressure for ligation mechanism.

the mechanism is pricked to cover includes interior barrel 21, promote cover 22, be used for the tight line subassembly 23 of the focus tissue of the bundle and be used for filtering the filter assembly 24 of foreign matter, promote cover 22 cover establish including barrel 21 on and promote cover 22 can take place the displacement relatively barrel 21 relatively, it prevents the structure that resets to be equipped with between promotion cover 22 and the interior barrel 21 to be used for preventing that promote cover 22 from reseing after the displacement, tight line subassembly 23 sets up and is equipped with one at least along the outer wall that promotes cover 22, tight line subassembly 23 is installed on promotion cover 22, in barrel 21 including filter assembly 24 installs, install the tightening means who is used for automatic tight line subassembly 23 that tightens on the handle.

The one end of interior barrel 21 is suction nozzle portion 211, the other end of interior barrel 21 is grafting portion 212, use preceding suction nozzle portion 211 position, use grafting portion 212 position as the back, grafting portion 212 fixed intercommunication is in the rear side of suction nozzle portion 211, be provided with joint portion 213 between suction nozzle portion 211 and the grafting portion 212, joint portion 213 is close to grafting portion 212 one side, guide way 214 has been seted up to the symmetry on joint portion 213, link up around guide way 214, sliding connection has promotion cover stopper 215 in guide way 214, third joint groove 216 has been seted up to the tank bottom of guide way 214, the symmetry is provided with first buckle 217 on joint portion 213, joint portion 213 can dismantle with firing mechanism through first buckle 217 and be connected.

The specific structure of the anti-reset structure is as follows: the tail end symmetry of promotion cover 22 is provided with second buckle 221, one side that is close to interior barrel 21 axis on promotion cover stopper 215 is provided with second joint groove 222, second buckle 221 joint is in second joint groove 222, one side of keeping away from interior barrel 21 axis on the promotion stopper is provided with third buckle 223, before promotion cover 22 takes place the displacement in relative interior barrel 21, third buckle 223 is located second joint groove 222, after promotion cover 22 takes place the displacement in relative interior barrel 21, third buckle 223 joint is in third buckle groove 216, once promote the action when accomplishing, it is spacing by third buckle groove 216 on interior barrel 21 joint portion 213 to promote cover stopper 215, unable return can prevent used repeatedly the utility model discloses a ligation mechanism reaches the disposable operation requirement of consumptive material.

The plug part 212 of the inner barrel 21 is provided with an inner barrel sealing ring 218, which plays a sealing role when the plug part 212 is detachably connected to a matched handle, and keeps the sealing performance of the working state.

The stringing assembly 23 comprises an elastic string, a stringing tube 232, a stringing cap 233 and a stringing clamping head 234, wherein the front end of the elastic string is provided with a ring sleeve 235 with adjustable aperture (the front end of the elastic string winds around a ring and forms a slipknot with the elastic string), the middle part of the elastic string is penetrated in the stringing tube 232, the front end of the stringing tube 232 is provided with the stringing cap 233, the rear end of the stringing tube 232 is provided with the stringing clamping head 234, the ring sleeve 235 is limited by the stringing cap 233, and the rear end of the elastic string is limited by the stringing clamping head 234; before operation, the ring sleeve 235 is sleeved on the inner barrel 21 and is limited and arranged at the front end face of the pushing sleeve 22, and when the rear end of the elastic line is pulled backwards, the hole diameter of the ring sleeve 235 at the front end of the elastic line is gradually reduced.

The inner diameter of the pushing sleeve 22 is matched with the outer diameter of the inner gun tube 21, when the pushing sleeve 22 is displaced relative to the inner gun tube 21, the front end surface of the pushing sleeve 22 pushes out the ring sleeve 235 at the front end of the elastic line, so that the ring sleeve 235 is tied at the root of the hemorrhoid.

The stringing assembly 23 further comprises a fixing ring 237 installed on the pushing sleeve 22, the tail of the pushing sleeve 22 is fixedly provided with a limit ring 224, the fixing ring 237 is installed between the limit ring 224 and the clamping portion 213 of the inner barrel 21, the fixing ring 237 is provided with a clamping position 238, and the tail of the stringing tube 232 is installed in the clamping position 238.

The tightening device comprises a winding wheel 251 and a motor for driving the winding wheel 251 to rotate, the motor is fixedly arranged in the handle and is in transmission connection with a rotating shaft of the winding wheel 251 through a speed reducer, the winding wheel 251 is arranged on the outer side of the handle and is positioned on the rear side of elastic wires, and the rear ends of the elastic wires are detachably connected to the winding wheel 251. The rear end of the elastic thread is provided with a fixing ring 237, the winding wheel 251 is provided with a fixing hook, and the elastic thread can be connected to the fixing hook of the winding wheel 251 through the fixing ring 237 at the rear end of the elastic thread, so that the elastic thread is wound by the winding wheel 251 under the driving of the motor, and finally the action of tightening the elastic thread is realized.

the elastic wire is automatically tightened by the tightening device, so that the hands of medical staff can be liberated, the wire tightening can be completed without cooperation of multiple people, the instrument is more stably held, the success rate of the operation is improved, and the operation risk and complications are reduced.

the inner wall of the fixing ring 237 is provided with a plurality of first anti-slip ribs 239 at uniform intervals along the circumferential direction, so as to prevent the fixing ring 237 from rotating on the push sleeve 22.

the filtering assembly 24 comprises a filtering seat 241, a filtering membrane 242 is installed in the filtering seat 241, and a filtering sealing ring 243 is installed on the outer wall of the filtering seat 241, so that foreign matters are prevented from being sucked into the matching handle, the negative pressure pump 42 and other reusable parts are protected, and the service life of the whole structure is prolonged. Specifically, the filter seat 241 includes a front filter seat 241 and a rear filter seat 241, the front filter seat 241 is installed in the suction nozzle portion 211 of the inner barrel 21, the rear filter seat 241 is installed in the insertion portion 212 of the inner barrel 21, a plurality of second anti-slip ribs 244 are evenly arranged on the outer wall of the front filter seat 241 along the axial direction at intervals, a plurality of third anti-slip ribs 245 are evenly arranged on the outer wall of the rear filter seat 241 along the axial direction at intervals, the filter membrane 242 is installed in the front filter seat 241, the filter sealing ring 243 is installed on the outer wall of the rear filter seat 241, the filter membrane 242 can prevent foreign matters from entering the matching handle from the inside of the filter seat 241, the filter sealing ring 243 can prevent foreign matters from entering the matching handle from the space between the filter seat 241 and the inner barrel 21, and the filter seat 241 can be stably fixed in the inner barrel 21 by the second anti-slip ribs 244 and the third anti-slip ribs.

The firing mechanism comprises a firing switch 31, a guide pushing block 32 and a vent pipe top seat 33, the vent pipe top seat 33 is fixedly connected in the handle, the guide pushing block 32 is slidably connected on the vent pipe top seat 33, the firing switch 31 (trigger) is rotatably connected on the handle and is in transmission connection with the lower end of the guide pushing block 32, a tension spring 34 is arranged between the guide pushing block 32 and the vent pipe top seat 33 and used for resetting the firing switch 31 after the pushing sleeve 22 is displaced, and the inner gun tube 21 is detachably connected on the vent pipe top seat 33.

breather pipe footstock 33 includes barrel connecting portion 331 and pipeline connecting portion 332, is provided with the negative pressure passageway of mutual intercommunication in barrel connecting portion 331 and the pipeline connecting portion 332, and barrel connecting portion 331 sets up with interior barrel 21 coaxial and the tail end of interior barrel 21 is pegged graft in barrel connecting portion 331, and pipeline connecting portion 332 communicates with the attraction mechanism.

The bilateral symmetry of barrel connecting portion 331 is provided with guided way 334, has seted up first joint groove 335 on the guided way 334, and the first buckle 217 joint on the joint portion 213 of interior barrel 21 is in first joint groove 335, sets up guided way 334 and can carry on spacingly to the direction promotion piece 32, prevents that its dislocation from leading to unable promotion push sleeve 22.

A left trip key 13 and a right trip key 14 are arranged on the handle, and the left trip key 13 and the right trip key 14 are respectively matched with a first buckle 217 on the clamping part 213 of the inner gun tube 21; left side trip key 13 is the same with right trip key 14's structure, and left side trip key 13 includes presses the splenium, and it exposes handle and unsettled setting to press the splenium, presses the one end of splenium to connect resilience portion, and resilience portion fixes on the handle inner wall. The handle is internally provided with an L-shaped retaining wall 15 which effectively isolates the negative pressure pump 42 from the electric control device 5 and prevents the negative pressure pump from being influenced by external bacteria and sterilization.

A vent seat gasket 336 is mounted between the rear end of the inner barrel 21 and the barrel connecting portion 331, and a vent seat gasket 337 is mounted on the duct connecting portion 332.

a guide cavity 321 which is through from front to back is arranged in the guide pushing block 32, the guide pushing block 32 is connected to the vent pipe top seat 33 in a sliding mode through the guide cavity 321, push rods 322 which are matched with the pushing sleeve limiting block 215 are symmetrically arranged at the front end of the guide pushing block 32, and a transmission block 323 which is in contact with the trigger switch 31 is arranged at the lower portion of the guide pushing block 32.

the push rod 322 is provided with a limit step 324, the length of the limit step 324 is smaller than that of the push sleeve limit block 215, and the length of the push sleeve limit block 215 is larger than the displacement stroke of the push sleeve 22, so that the push action is prevented from being invalid.

the suction mechanism comprises a four-way pipe 41, a negative pressure pump 42 and a pressure relief assembly 43 for relieving pressure of the ligation mechanism, the four-way pipe 41 is provided with a first interface, a second interface, a third interface and a fourth interface, the first interface is communicated with the vent pipe top seat 33, the second interface is communicated with the air suction port of the negative pressure pump 42 through a negative pressure pump connecting conduit 44, the pressure relief assembly 43 is installed at the third interface, and the fourth interface is connected with a sensor connecting conduit 45; the inner gun tube 21, the vent pipe top seat 33, the four-way pipe 41, the negative pressure pump connecting conduit 44 and the negative pressure pump 42 are communicated in sequence to form a negative pressure pumping channel.

Third interface is the cross setting with the trunk line of four-way pipe 41, and pressure release subassembly 43 includes pressure release key 431, pressure release lid 432 and compression spring 433, and pressure release key 431 stretches out the one end and the sliding connection of third interface in the third interface, and pressure release lid 432 threaded connection sets up between pressure release key 431 and the pressure release lid 432 compression spring 433 presses compression spring 433 through pressure release key 431, can open the one end of third interface and carry out the pressure release, installs pressure release key sealing washer 434 between pressure release key 431 and the third interface, installs pressure release lid sealing washer 435 between pressure release lid 432 and the third interface.

An exhaust duct 421 is connected to an exhaust port of the negative pressure pump 42, an exhaust joint 422 is installed on the exhaust duct 421, a check valve 423 is installed in the exhaust joint 422, and the check valve 423 can be a duckbill valve; the exhaust joint 422 is clamped at the bottom of the handle, and an exhaust joint sealing ring 424 is arranged between the exhaust joint 422 and the handle; the periphery of the negative pressure pump 42 is wrapped with the damping sleeve 425, and the negative pressure pump 42 can be wrapped with a silica gel sleeve, so that vibration can be reduced, and noise can be reduced.

An electric control device 5 for controlling the negative pressure pump 42 is also arranged in the handle. The electric control device 5 can be a PLC, an integrated circuit or a single chip microcomputer. The single chip microcomputer can adopt MSP430G 2332.

the battery 51 and the electric control device 5 are installed inside the handle, the battery bin 16 is arranged in the handle, the battery 51 is installed in the battery bin 16, the battery 51 is respectively and electrically connected with the electric control device 5 and the negative pressure pump 42, the negative pressure pump 42 is arranged below the battery 51, the electric control device 5 is electrically connected with the pressure sensor, the probe of the pressure sensor is arranged in the sensor connecting conduit 45, one end of the sensor connecting conduit 45 is closed, the other end of the sensor connecting conduit 45 is communicated with the four-way pipe, the negative pressure pump 42 is connected with the power key 52 through a wire, and the power key 52 is installed on the handle; the electronic control device 5 is also connected with a display screen 54, and the display screen 54 is arranged on the handle.

In specific application, the electric control device 5 can be a PCB (printed circuit board), the PCB is fixed in the handle, and the PCB is provided with parts such as a pressure sensor, a display screen 54, a self-locking switch, a patch LED (light emitting diode), a buzzer, a charging connector and the like; the handle is provided with a charging port and a light transmitting port, the charging port is provided with a dustproof protective cover 17, the dustproof protective cover 17 is a lifting buckle cover, the charging joint can be exposed by lifting the dustproof protective cover 17, and the charging joint can be shielded after the dustproof protective cover 17 is buckled on the handle; the light transmitting opening is provided with a light transmitting piece 18 which facilitates the light transmission of the surface-mounted LED. The handle is provided with a motor control key 252, the motor control key 252 and the motor are respectively connected with the electric control device 5 through wires, and when the elastic wires need to be tightened, the motor can be started by pressing the motor control key 252.

The dustproof protective cover 17 is in interference fit with the charging connector, the sealing rings are in interference fit with the holes in the corresponding positions on the left handle shell 11 and the right handle shell 12, and the sealing rings and the L-shaped retaining wall 15 in the handle form a closed space, so that the electric control device 5, the battery 51 and the negative pressure pump 42 are effectively protected from being influenced by external bacteria and sterilization. After one case is completed, the dust-proof protective cover 17 is pressed in place, and the handle can be sterilized and prepared for reuse next time.

During operation, the ligation mechanism is arranged in a first clamping groove 335 of a top seat 33 of an air pipe in the handle through the front end of the handle, a power key 52 is pressed down, a negative pressure pump 42 starts to work to find a part needing ligation, when the display screen 54 displays that the negative pressure value is in the range of-0.08 to-0.10 MPa, a trigger switch 31 is knocked, a guide pushing block 32 pushes a pushing sleeve limiting block 215 and a pushing sleeve 22 under the action of the trigger switch 31, a ring sleeve 235 of elastic wires is pushed to the position needing ligation, the elastic wires are tightened through a tightening device, then the elastic wires are cut off, a wire tightening device is taken out, a pressure relief key 431 is pressed down to relieve pressure, the handle is withdrawn, the power key 52 is pressed down to close the power, and ligation of the part is completed.

When one-time pushing action is completed, the pushing sleeve limiting block 215 is limited in position by the two third buckles 223 at one end of the inner gun tube 21 and cannot return, so that the ligation mechanism cannot be reused, and the disposable use requirement of consumables is met. The left and right trip keys 13 and 14 on the left and right handle shells are pressed to take out the ligation mechanism for the next ligation action.

The utility model discloses not only can prevent that medical personnel's reuse from organizing as the cover of disposable consumptive material to prick the mechanism, can also prevent that the foreign matter from getting into inside the supporting handle, can avoid infecting, operation safety.

The negative pressure pump 42, the elastic line, the motor, the speed reducer, the filtering film 242, the filtering sealing ring 243, the pressure sensor, the display screen 54, the self-locking switch, the patch LED, the buzzer and the charging connector are conventional devices, and the specific structure is not detailed.

The above embodiments are not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification of the above embodiments.

Claims (10)

1. The utility model provides a repeatedly usable type anus intestines ligation ware with automatic tight line function, its whole is rifle shape, includes handle and ligation mechanism, its characterized in that: the ligation mechanism is detachably connected with the handle, and a firing mechanism for firing the ligation mechanism and an attraction mechanism for providing negative pressure for the ligation mechanism are arranged in the handle;

The loop ligature mechanism comprises an inner gun barrel, a pushing sleeve, a stringing component for loop ligaturing focus tissues and a filtering component for filtering foreign matters, wherein the pushing sleeve is sleeved on the inner gun barrel and can displace relative to the inner gun barrel;

The firing mechanism comprises a firing switch, a guide pushing block and a vent pipe top seat, the vent pipe top seat is fixedly connected in the handle, the guide pushing block is connected on the vent pipe top seat in a sliding manner, the firing switch is rotationally connected on the handle and is in transmission connection with the guide pushing block, a tension spring is arranged between the guide pushing block and the vent pipe top seat, and the inner gun tube is detachably connected on the vent pipe top seat;

The suction mechanism comprises a four-way pipe, a negative pressure pump and a pressure relief assembly for relieving pressure of the ligation mechanism, the four-way pipe is provided with a first interface, a second interface, a third interface and a fourth interface, the first interface is communicated with a top seat of the vent pipe, the second interface is communicated with an air suction port of the negative pressure pump through a negative pressure pump connecting conduit, the pressure relief assembly is installed at the third interface, and the fourth interface is connected with a sensor connecting conduit;

An electric control device for controlling the negative pressure pump is also arranged in the handle.

2. the reusable anorectal ligation device with the automatic wire tightening function according to claim 1, wherein the anorectal ligation device comprises: the tightening assembly is arranged on the push sleeve through a fixing ring and comprises an elastic wire, a tightening pipe, a tightening cap and a tightening joint head, the front end of the elastic wire is provided with a ring sleeve with adjustable aperture, the middle part of the elastic wire penetrates through the tightening pipe, the front end of the tightening pipe is provided with the tightening cap, the rear end of the tightening pipe is provided with the tightening joint head, the ring sleeve is limited by the tightening cap, and the rear end of the elastic wire is limited by the tightening joint head;

The tightening device comprises a winding wheel and a motor driving the winding wheel to rotate, the motor is fixedly installed inside the handle, the motor is in transmission connection with a rotating shaft of the winding wheel, the winding wheel is arranged on the outer side of the handle and located on the rear side of the elastic wire, and the rear end of the elastic wire is connected to the winding wheel.

3. The reusable anorectal ligation device with the automatic wire tightening function according to claim 2, wherein the anorectal ligation device comprises: the one end of interior barrel is suction nozzle portion, the other end of interior barrel is grafting portion, use the position of suction nozzle portion place as preceding, use grafting portion position as the back, the fixed intercommunication of grafting portion is in the rear side of suction nozzle portion, be provided with joint portion between suction nozzle portion and the grafting portion, joint portion is close to grafting portion one side, the guide way has been seted up to the symmetry in the joint portion, link up around the guide way, sliding connection has the promotion to overlap the stopper in the guide way, the third joint groove has been seted up to the tank bottom of guide way, the symmetry is provided with first buckle in the joint portion.

4. The reusable anorectal ligation device with the automatic wire tightening function according to claim 3, wherein the anorectal ligation device comprises: the specific structure of the anti-reset structure is as follows: the tail end symmetry that promotes the cover is provided with the second buckle, and the one side that is close to interior barrel axis on the promotion cover stopper is provided with second joint groove, and second buckle joint is provided with the third buckle at second joint inslot, and the one side of keeping away from interior barrel axis on the promotion stopper is provided with the third buckle, before the promotion cover takes place the displacement to the internal barrel relatively, and the third buckle is located second joint inslot, promotes the cover and takes place the displacement back to the internal barrel relatively, and the third buckle joint is at third joint inslot.

5. The reusable anorectal ligation device with the automatic wire tightening function according to claim 1, wherein the anorectal ligation device comprises: the pressure release subassembly includes the pressure release key, pressure release lid and compression spring, and the one end and the sliding connection that the pressure release key stretches out the third interface are in the third interface, and pressure release lid threaded connection sets up between pressure release key and the pressure release lid compression spring installs pressure release key sealing washer between pressure release key and the third interface, installs pressure release lid sealing washer between pressure release lid and the third interface.

6. The reusable anorectal ligation device with the automatic wire tightening function according to claim 1, wherein the anorectal ligation device comprises: an exhaust port of the negative pressure pump is connected with an exhaust guide pipe, an exhaust joint is arranged on the exhaust guide pipe, and a one-way valve is arranged in the exhaust joint; the exhaust joint is clamped at the bottom of the handle, and an exhaust joint sealing ring is arranged between the exhaust joint and the handle; the periphery of the negative pressure pump is wrapped with a damping sleeve.

7. the reusable anorectal ligation device with the automatic wire tightening function according to claim 1, wherein the anorectal ligation device comprises: the battery and the electric control device are installed inside the handle, the battery bin is arranged in the handle, the battery is installed in the battery bin, the battery is respectively and electrically connected with the electric control device and the negative pressure pump, the electric control device is electrically connected with the pressure sensor, a probe of the pressure sensor is arranged in the sensor connecting conduit, one end of the sensor connecting conduit is closed, the other end of the sensor connecting conduit is communicated with the four-way pipe, the negative pressure pump is connected with a power key through a wire, and the power key is installed on the handle; the electric control device is also connected with a display screen, and the display screen is arranged on the handle; the rear part of the handle is provided with a charging port and a light transmitting port, and the charging port is provided with a dustproof protective cover; the light transmitting opening is provided with a light transmitting piece which is convenient for the LED to be pasted for light transmission.

8. the reusable anorectal ligation device with the automatic wire tightening function according to claim 3 or 4, wherein the anorectal ligation device comprises: the vent pipe top seat comprises a gun pipe connecting part and a pipeline connecting part, negative pressure channels which are mutually communicated are arranged in the gun pipe connecting part and the pipeline connecting part, the gun pipe connecting part and the inner gun pipe are coaxially arranged, the tail end of the inner gun pipe is inserted in the gun pipe connecting part, and the pipeline connecting part is communicated with the suction mechanism;

The bilateral symmetry of barrel connecting portion is provided with the guided way, has seted up first joint groove on the guided way, and the first buckle joint on the interior barrel joint portion is in first joint inslot.

9. the reusable anorectal ligation device with the automatic wire tightening function according to claim 8, wherein the anorectal ligation device comprises: the handle is provided with a left trip key and a right trip key, the left trip key and the right trip key are respectively matched with the first buckle on the clamping part of the inner gun tube, and the handle is internally provided with an L-shaped retaining wall.

10. The reusable anorectal ligation device with an automatic wire tightening function according to any one of claims 1 to 7, wherein the anorectal ligation device comprises: the filtering component comprises a filtering seat, a filtering membrane is arranged in the filtering seat, and a filtering sealing ring is arranged on the outer wall of the filtering seat.