CN209789930U - Electric anorectal ligation device for reducing cross infection - Google Patents

Abstract

The utility model discloses a reduce cross infection's electronic anus intestines ligation device, the electric drill comprises a handle, ligation mechanism, firing mechanism, attract mechanism and control mechanism, ligation mechanism includes interior barrel, promote the cover, tight line subassembly and filtering component, promote the cover and establish on the barrel including, firing mechanism includes trigger switch, the direction promotes piece and breather pipe footstock, breather pipe footstock fixed connection is in the handle, the direction promotes piece sliding connection on the breather pipe footstock, trigger switch rotates and connects on the handle, attract mechanism includes four-way pipe and negative pressure pump, the four-way pipe respectively with the breather pipe footstock, negative pressure pump, pressure relief component and sensor connecting pipe are linked together, control mechanism includes controller and infrared receiver, infrared receiver sets up on the inner wall of interior barrel, infrared receiver links to each other with the controller. The utility model discloses can prevent this disposable assembly of medical personnel reuse to can prevent that the foreign matter from getting into inside supporting handle, can avoid infecting, operation safety.

Description

Electric anorectal ligation device for reducing cross infection

Technical Field

The utility model relates to the field of medical equipment, especially, relate to an electronic anus intestines ligation device that reduces cross infection.

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 needs to be cleaned, and if the storage tank is not cleaned or the disinfection effect required by medical treatment cannot be achieved, bacteria are easy to breed, so that the storage tank is not beneficial to reuse; 3. the depth of the tissue sucked into the ligation device is not detected, so that the ligation device can fall off due to improper or loose state, and the operation effect is influenced; 4. the suction pipe of the prior 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 process of sucking negative pressure.

disclosure of Invention

The utility model discloses a solve the weak point among the prior art, provide an electronic anus intestines ligation device that reduces cross infection, can prevent that medical personnel used repeatedly this disposable subassembly, avoid cross infection to can detect the degree of depth of inhaling the inside tissue of ligation device, improve the precision of ligation.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

An electric anorectal ligation device capable of reducing cross infection 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, a suction mechanism for providing negative pressure for the ligation mechanism, a control mechanism and a storage battery are arranged in the handle;

The loop ligature mechanism comprises an inner gun barrel, a pushing sleeve, a line tightening 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 an air exhaust pipeline, a negative pressure pump and a pressure relief assembly for relieving pressure of the ligation mechanism, one end of the air exhaust pipeline is communicated with the vent pipe top seat, the other end of the air exhaust pipeline is communicated with an air exhaust port of the negative pressure pump, and the pressure relief assembly is arranged on the air exhaust pipeline;

Control mechanism includes controller, charging circuit, infra-red transmitter and infrared receiver, and infra-red transmitter and infrared receiver all set up on the inner wall of interior barrel, and the transmitting surface of infra-red transmitter sets up with infrared receiver's receiving face relatively, and infrared receiver links to each other with the controller, charging circuit's input connection is located the external adapter interface on the handle, and charging circuit's output links to each other with the battery, and the controller is the control connection negative pressure pump still.

preferably, the one end of interior barrel is suction nozzle portion, and the other end of interior barrel is grafting portion, with preceding in suction nozzle portion position, with grafting portion position as the back, the fixed intercommunication of grafting portion is 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, filtering component installs filtration membrane including filtering the seat in filtering the seat, filters the outer wall of seat and installs and filter the sealing washer, wherein, filters the seat including preceding filtration seat and back filtration seat, in the nozzle portion of barrel including preceding filtration seat installation, in the grafting portion of barrel including the back filtration seat installation, the outer wall of preceding filtration seat is equipped with a plurality of second antiskid arris along the even interval of axial, the outer wall of back filtration seat is equipped with a plurality of third antiskid arris along the even interval of axial, filtration membrane installs in the preceding filtration seat, filter the sealing washer and install the outer wall of filtering the seat at the back.

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, pressure release lid and compression spring, is equipped with the interface on the exhaust duct, and the pressure release key stretches out the one end and the sliding connection of interface in the interface, and pressure release lid screw thread 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 interface, installs pressure release lid sealing washer between pressure release lid and the 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, the charging circuit comprises a charging chip and a semiconductor diode, wherein an external adapter interface is connected with a first anode of the semiconductor diode, the first anode of the semiconductor diode is further grounded through a first resistor and a first capacitor in sequence, a common end of the first resistor and a second resistor is connected with an OVPSET end of the charging chip, a second anode of the semiconductor diode is connected with an output end of the charging device, a cathode of the semiconductor diode is grounded through a second resistor and a second capacitor in sequence, the external adapter interface is further connected with an ACP pin of the charging chip through a first switching tube and a second switching tube in sequence, a source of the first switching tube is connected with a source of the second switching tube and then connected with a CMSRC pin of the charging chip through a third resistor, a gate of the first switching tube is connected with a gate of the second switching tube and then connected with an ACRV pin of the charging chip through a fourth resistor, the TS pin of the charging chip is grounded through a fifth resistor, the TS pin of the charging chip is also connected with a first common terminal A through a sixth resistor, the STAT pin of the charging chip is sequentially connected with the first common terminal A through a first diode and a seventh resistor, the ISET pin of the charging chip is connected with the first common terminal A through an eighth resistor, the ISET pin of the charging chip is also grounded through a ninth resistor, the ACSET pin of the charging chip is connected with the first common terminal A through a tenth resistor, the ACSET pin of the charging chip is also grounded through an eleventh resistor, the VREF pin of the charging chip is grounded through a third capacitor, the VREF pin of the charging chip is also connected with the first common terminal A, the BATDRBATDRBATV pin of the charging chip is effective in low level, the drain electrode of the third switch is connected with the ACP pin of the charging chip through a thirteenth resistor, and both ends of the thirteenth resistor are connected with a fourth capacitor in parallel, the drain electrode of the third switching tube is also connected with the ACN pin of the charging chip, the ACN pin of the charging chip is grounded through a fifth capacitor, the source electrode of the third switching tube is connected with a second common terminal B, the SRN pin of the charging chip is connected with the second common terminal B, the SW pin of the charging chip is sequentially connected with the second common terminal B through a first inductor and a fourteenth resistor, both ends of the fourteenth resistor are connected with a sixth capacitor in parallel, the common terminal of the first inductor and the fourteenth resistor is connected with the SRP pin of the charging chip, the BTST pin of the charging chip is connected with the SW pin of the charging chip through a ninth capacitor, the second common terminal B is grounded through an eighth capacitor, the second common terminal B is connected with the anode of the semiconductor diode, the second common terminal outputs direct-current voltage and supplies power to the energy storage unit through an external interface, and the REGN pin of the charging chip is connected with the PGND pin of the charging chip through a ninth capacitor.

preferably, the output end of the controller is connected with the negative pressure pump through a switch circuit, the switch circuit comprises a fourth switch tube and a fifth switch tube, the grid electrode of the fourth switch tube is connected with the I/O port of the controller through a fifteenth resistor, the grid electrode of the fourth switch tube is grounded through a sixteenth resistor, the source electrode of the fourth switch tube is grounded, the drain electrode of the fourth switch tube is connected with the grid electrode of the fifth switch tube through a seventeenth resistor, the drain electrode of the fifth switch tube is grounded through an eighteenth resistor, the source electrode base of the fifth switch tube, the drain electrode of the fifth switch tube is grounded through a second diode, and the drain electrode of the fifth switch tube is connected with the negative pressure pump.

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, the control mechanism further comprises a pressure sensor and a display, the pressure sensor and the display are respectively connected with the controller, the air exhaust pipeline is further communicated with a sensor connecting pipeline, the end part of the sensor connecting pipeline is closed, and a probe of the pressure sensor is arranged in the sensor connecting pipeline.

the utility model discloses following beneficial effect has:

(1) 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.

(2) 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 the function of repeated consumptive material, reaches the disposable requirement of consumptive material.

(3) The filtering membrane of the utility model can prevent foreign matters from entering the matched handle from the inside of the filtering seat, the filtering sealing ring can prevent foreign matters from entering the matched handle from the space between the filtering seat and the inner gun tube, and the second anti-slip edge and the third anti-slip edge can stably fix the filtering seat in the inner gun tube, avoid sliding and falling off, and the like; 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.

(4) 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.

(5) 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.

(6) 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.

(7) The utility model discloses be provided with infra-red transmitter and infrared receiver on the inner wall of gun barrel including, infra-red transmitter and infrared receiver are used for detecting whether the degree of depth of inhaling the tissue reaches the setting value to close through controller control negative pressure pump, thereby realize improving the cover and prick the precision to the accurate control of the degree of depth of inhaling.

(8) The utility model discloses inside being fixed in the ligation ware with the battery, insert the power through the external adapter interface, and convert the power into stable direct current through charging chip and supply and store in the battery, when lithium battery overdischarge, charging chip charges with less electric current in the stage of charging in advance, thereby protect the lithium battery, get into the constant current stage after the stage of charging in advance, use great electric current to charge for the lithium battery promptly, get into the constant voltage stage after reaching the settlement voltage value, and automatic disconnection power supply after the completion of charging, need not to disinfect the battery after charging at every turn, not only save time, and convenient operation.

the utility model discloses can prevent this disposable assembly of medical personnel reuse, avoid cross infection to can detect the degree of depth of inhaling the inside tissue of ligation device, improve the precision of ligation.

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 schematic circuit diagram of the charging circuit of the present invention;

Fig. 15 is a schematic circuit diagram of the switching circuit of the present invention.

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 storage battery bin, 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 wire tightening pipe, 233, a wire tightening cap, 234, a wire tightening joint, 235, a loop, 236, a knot; 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;

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. The air suction pipeline 42, the negative pressure pump 43, the pressure relief assembly 44 and the sensor are connected with the 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. the control mechanism 51, the storage battery 52, the power key 53, the infrared transmitter 54, the display 55 and the infrared receiver.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

As shown in fig. 1 to 15, the utility model discloses a reduce cross infection's electronic anus intestines ligation device, its whole is rifle shape, including handle and ligation mechanism, ligation mechanism and the detachable connection of handle, handle include left handle shell 11 and right handle shell 12, and the mutual lock assembly of left handle shell 11 and right handle shell 12 forms the rifle shell, is provided with control mechanism 5 in the handle, is used for the trigger mechanism of trigger ligation mechanism, is used for providing the suction mechanism of negative pressure and is used for the battery 51 of being the ligation device power supply 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 ligature and be used for filtering the filter component 24 of foreign matter, promote cover 22 cover establish including barrel 21 on and promote cover 22 can take place the displacement relatively to barrel 21, it prevents the structure that resets to be equipped with to be used for preventing to promote behind the cover 22 displacement to promote between cover 22 and the interior barrel 21, tight line subassembly 23 sets up and is equipped with one at least along the outer wall of promoting cover 22, tight line subassembly 23 is installed on promoting cover 22, filter component 24 installs including in barrel 21.

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 that keeps away from interior barrel 21 axis on the promotion stopper 215 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 joint groove 216, once promote the action when accomplishing, it is spacing by third buckle groove 216 on the joint portion 213 of interior barrel 21 to promote cover stopper 215, unable return, can prevent used repeatedly the utility model discloses a ligation subassembly reaches the disposable 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 component 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 is looped around a ring and then forms a slipknot with the elastic string, the rear end of the elastic string is provided with a knot 236, the middle part of the elastic string is arranged in the stringing tube 232 in a penetrating way, 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 knot 236 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 inner wall of the fixing ring 237 is provided with a plurality of first anti-slip ribs 239 at even intervals along the circumferential direction, so that the fixing ring 237 is prevented from rotating on the push sleeve.

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, and the second anti-slip ribs 244 and the third anti-slip ribs 245 can stably fix the filter seat 241 in the inner barrel 21 to.

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 coaxial and the tail end of interior barrel is pegged graft in barrel connecting portion 331, and pipeline connecting portion 332 and suction mechanism communicate.

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 interior barrel joint portion 213 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 the first buckle 217 on the clamping part 213 of the inner gun tube; 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 and is free from the influence of 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 an air suction pipeline 41, a negative pressure pump 42, a sensor connecting conduit 44 and a pressure relief assembly 43 for relieving pressure of the ligation mechanism, one end of the air suction pipeline 41 is communicated with the vent pipe top seat 33, the air suction port of the negative pressure pump 42 at the other end is communicated, the pressure relief assembly 43 is arranged on the air suction pipeline 41, one end of the sensor connecting pipeline 44 is communicated with the air suction pipeline 41, the other end of the sensor connecting pipeline is arranged close to the control mechanism 5, and in the embodiment, the pressure relief assembly 43 is arranged on one side, close to the negative pressure pump 42, of the air; the inner gun tube 21, the vent pipe top seat 33, the air exhaust pipeline 41 and the negative pressure pump 42 are communicated in sequence to form an air exhaust negative pressure channel.

Be equipped with the interface on the air exhaust pipeline 41, 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 interface in the 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 interface and carry out the pressure release, installs pressure release key sealing washer 434 between pressure release key 431 and the interface, installs pressure release lid sealing washer 435 between pressure release lid 432 and the 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 is wrapped with a 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.

the handle is internally provided with a storage battery bin 16, a storage battery 51 is arranged in the storage battery bin 16, the storage battery 51 is respectively and electrically connected with the control mechanism and the negative pressure pump 42, the negative pressure pump 42 is arranged in the storage battery 51, a power supply key 52 is arranged on a power supply line of the negative pressure pump 42, and the power supply key 52 is arranged on the handle.

the control mechanism 5 comprises a controller, a charging circuit, a switch circuit, an infrared emitter 53, an infrared receiver 55, a pressure sensor and a display 54, wherein the infrared emitter 53 and the infrared receiver 55 are both arranged on the inner wall of the inner gun tube 21, the emitting surface of the infrared emitter 53 is arranged opposite to the receiving surface of the infrared receiver 55, the infrared emitter 53 and the infrared receiver 55 are used for detecting whether the depth of the absorbed tissue reaches a set value or not, a probe of the pressure sensor is arranged in a sensor connecting conduit 44, one end of the sensor connecting conduit 44 is closed, the other end of the sensor connecting conduit 44 is communicated with the air suction pipeline 41, the pressure sensor is used for detecting the negative pressure in the sensor connecting conduit 44, the infrared receiver 55 and the pressure sensor are both connected with the controller, when the infrared receiver 55 detects that the depth of the absorbed tissue reaches the set value, the controller controls the negative, at the same time, the pressure sensor detects the pressure in the sensor connection conduit 44 and displays it on the display 54 for reference by the medical personnel; the input end of the charging circuit is connected with an external adapter interface positioned on the handle, the output end of the charging circuit is connected with the storage battery 51, and the controller is connected with the negative pressure pump 42 through a switch circuit.

the charging circuit comprises a charging chip and a semiconductor diode, wherein a plug is arranged at an external adapter interface P1, the external adapter interface P1 is connected with a first anode of a semiconductor diode U2, the first anode of the semiconductor diode U2 is further grounded through a first resistor R1 and a first capacitor C1 in sequence, a common end of a first resistor R1 and a second resistor R2 is connected with an OVPSET pin of the charging chip U1, a second anode of the semiconductor diode U2 is connected with an output end of the charging device, a cathode of the semiconductor diode U2 is grounded through a second resistor R2 and a second capacitor C2 in sequence, the external adapter interface P1 is further connected with a pin of the charging chip U1 through a first switching tube Q1 and a second switching tube Q2 in sequence, a source of the first switching tube Q1 is connected with a source of a second switching tube Q2, and then is connected with a gate of a CMQ 2 of a gate of a first switch tube Q1 through a third resistor R3, the terminal is connected with an ACRV pin of a charging chip U1 through a fourth resistor R4, a TS pin of the charging chip U1 is grounded through a fifth resistor R5, a TS pin of a charging chip U1 is further connected with a first common terminal A through a sixth resistor R6, an STAT pin of the charging chip U1 is sequentially connected with the first common terminal A through a first diode D1 and a seventh resistor R7, an ISET pin of the charging chip U1 is connected with the first common terminal A through an eighth resistor R8, an ISET pin of the charging chip U1 is further grounded through a ninth resistor R9, an ACSET pin of the charging chip U1 is connected with the first common terminal A through a tenth resistor R10, a SET ACDRV pin of the charging chip U1 is further grounded through an eleventh resistor R11, a VREF pin of the charging chip U1 is grounded through a third capacitor C3, a VREF pin of the charging chip 686U 9 is further connected with the first common terminal BATA, a twelve switch DRDRDRV pin 69553 of the charging chip U2 is connected with a low-level switch R1 and a low-voltage transistor 82 3, the drain of the third switch tube Q3 is connected with the ACP pin of the charging chip U1 through a thirteenth resistor R13, both ends of the thirteenth resistor R13 are connected in parallel with a fourth capacitor C4, the drain of the third switch tube Q3 is further connected with the ACN pin of the charging chip U1, the ACN pin of the charging chip U1 is grounded through a fifth capacitor C5, the source of the third switch tube Q3 is connected with a second common terminal B, the SRN pin of the charging chip U1 is connected with the second common terminal B, the SW pin of the charging chip U1 is connected with the second common terminal B through a first inductor L1 and a fourteenth resistor R14 in sequence, both ends of the fourteenth resistor R14 are connected in parallel with a sixth capacitor C6, the common terminal of the first inductor L1 and the fourteenth resistor R14 is connected with the SRP pin of the charging chip U1, the st pin of the charging chip U1 is connected with the SW pin 9 of the charging chip U56 through a ninth capacitor C826952, the second common terminal B is connected with the anode of the semiconductor diode btp 8653 and the second common terminal B8, the second common terminal B outputs a dc voltage VBAT, supplies power to the lithium battery through the external interface P2, and the REGN pin of the charging chip U1 is connected to the PGND pin of the charging chip U1 through the ninth capacitor C9.

The first diode D1 is a light emitting diode, the light emitting diode is normally on during charging, the light emitting diode is off after charging is completed, and the light emitting diode flickers when the charging device fails, and the process is controlled by the charging chip U1.

The switch circuit comprises a fourth switch tube Q4 and a fifth switch tube Q5, the grid electrode of the fourth switch tube Q4 is connected with an I/O port P2.4 of the controller through a fifteenth resistor R15, the grid electrode of the fourth switch tube Q4 is also grounded through a sixteenth resistor R16, the source electrode of the fourth switch tube Q4 is grounded, the drain electrode of the fourth switch tube Q4 is connected with the grid electrode of the fifth switch tube Q5 through a seventeenth resistor R17, the drain electrode of the fifth switch tube Q5 is also grounded through an eighteenth resistor R18, the source electrode base of the fifth switch tube Q5, the drain electrode of the fifth switch tube Q5 is grounded through a second diode D2, and the drain electrode of the fifth switch tube Q5 is also connected with the negative pressure pump 42.

In this embodiment, the first switch tube Q1, the second switch tube Q2, and the fourth switch tube Q4 all employ N-channel enhancement mode field effect transistors, the third switch tube Q3 and the fifth switch tube Q5 all employ P-channel enhancement mode field effect transistors, the semiconductor diode U2 employs a BAT54C schottky diode, the charging chip U3 employs a BQ24133 lithium ion-lithium polymer independent battery charger, and the controller employs an MSP430G2332 type single chip microcomputer.

when the external adapter interface P1 is connected with a power supply, the external adapter provides the power supply for the whole machine, and simultaneously charges a built-in storage battery, when the storage battery is charged, a pre-charging stage exists, namely, a small current is used for charging the storage battery, the current is one tenth of a constant current stage, so that the storage battery is protected, after the pre-charging stage is finished, a constant current stage is entered, namely, a large current is used for charging the storage battery, after a set voltage value is reached, a constant voltage charging stage is entered, and the power supply is automatically disconnected after the charging is finished; when the external adapter is absent, the storage battery provides the power supply for the whole machine, and seamless switching is realized.

In addition, the external adapter kneck is equipped with dustproof protecting cover 17, dustproof protecting cover 17 is for lifting the buckle closure, it can expose the external adapter interface to lift dustproof protecting cover 17, dustproof protecting cover 17 lock back on the handle, can shelter from the external adapter interface, dustproof protecting cover 17 and external adapter interface interference fit, each sealing washer and left handle shell 11, the hole interference fit of corresponding position on the right handle shell 12, they form airtight space with the inside L type barricade 15 of handle simultaneously, with control mechanism, battery 51 and negative pressure pump 42 effectively protect, avoid external bacterium and sterilization influence. 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 the first clamping groove 335 of the air pipe top seat 33 in the handle through the front end of the handle, the position needing ligation is found, the power key 52 is pressed down, the negative pressure pump 42 starts to work, when the tissue reaches the position where the infrared receiver 55 is located, the infrared receiver 55 does not receive the infrared rays emitted from the infrared emitter 53, thereby outputting signals, controlling the negative pressure pump 42 to be closed through the controller, digging the trigger switch 31, pushing the sleeve limiting block 215 and the pushing sleeve 22 by the guiding pushing block 32 under the action of the trigger switch 31, pushing the ring sleeve 235 of the elastic thread to the position needing to be sleeved, the elastic thread is tightened through the clamping joint of the thread tightening pipe 232 at one end of the thread tightening pipe 232 and the thread knot 236, then the elastic thread is cut off, the thread tightening device is taken out, the pressure relief key 431 is pressed to relieve pressure, the handle is withdrawn, the power key 52 is pressed to turn off the power, and the ligation of a 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. Pressing the left and right trip keys 13 and 14 on the left and right handles takes the ligation mechanism out to prepare for the next ligation action.

The utility model discloses not only can prevent that medical personnel's reuse from regard as the mechanism is pricked to the cover of disposable consumptive material, avoid cross infection, can also detect the degree of depth that inhales the inside tissue of ligation device, improve the precision of ligation. When battery electric power is not enough, insert the power through the external adapter interface, convert the power into stable direct current power supply through the chip that charges and store in the battery, need not to disinfect the battery after charging at every turn, not only save time, convenient operation moreover.

The elastic thread, the filter membrane 242, the filter sealing ring 243, the pressure sensor, the display 54 and the external adapter interface are conventional devices, and the specific structure is not described in detail.

The utility model discloses can prevent that medical personnel's reuse from organizing as the cover of disposable consumptive material and prick the mechanism, avoid cross infection, can also detect the degree of depth that inhales the inside tissue of ligation device, improve the precision of ligation.

Claims (10)

1. The utility model provides a reduce cross infection's electronic anus intestines loop ligature ware, its whole is gun-shaped, includes handle and loop ligature mechanism, its characterized in that: the ligation mechanism is detachably connected with the handle, and a firing mechanism for firing the ligation mechanism, an attraction mechanism for providing negative pressure for the ligation mechanism, a control mechanism and a storage battery are arranged in the handle;

the loop ligature mechanism comprises an inner gun barrel, a pushing sleeve, a line tightening 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 an air exhaust pipeline, a negative pressure pump and a pressure relief assembly for relieving pressure of the ligation mechanism, one end of the air exhaust pipeline is communicated with the vent pipe top seat, the other end of the air exhaust pipeline is communicated with an air exhaust port of the negative pressure pump, and the pressure relief assembly is arranged on the air exhaust pipeline;

Control mechanism includes controller, charging circuit, infra-red transmitter and infrared receiver, and infra-red transmitter and infrared receiver all set up on the inner wall of interior barrel, and the transmitting surface of infra-red transmitter sets up with infrared receiver's receiving face relatively, and infrared receiver links to each other with the controller, charging circuit's input connection is located the external adapter interface on the handle, and charging circuit's output links to each other with the battery, and the controller is the control connection negative pressure pump still.

2. The electric anorectal ligation device for reducing cross infection according to claim 1, wherein the electric anorectal ligation device comprises: the one end of interior barrel is suction nozzle portion, and the other end of interior barrel is grafting portion, uses the position of suction nozzle portion place as preceding, uses grafting portion position as the back, and the fixed intercommunication of grafting portion is provided with joint portion between suction nozzle portion and the grafting portion at the rear side of suction nozzle portion, and joint portion is close to grafting portion one side, and 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 cover stopper in the guide way, and the third joint groove has been seted up to the tank bottom of guide way, and the symmetry is provided with first buckle in the joint portion.

3. The electric anorectal ligation device for reducing cross infection according to claim 2, wherein the electric anorectal ligation device comprises: the utility model discloses a filter assembly, including the filter seat, install filtration membrane in the filter seat, the outer wall of filtering the seat is installed and is filtered the sealing washer, wherein, filter seat and post-filtration seat including preceding filter seat, preceding filter seat is installed in the mouth of inhaling of gun-barrel including, in the grafting portion of gun-barrel including post-filtration seat is installed, the outer wall of preceding filter seat is equipped with the antiskid arris of a plurality of second along the even interval of axial, the outer wall of post-filtration seat is equipped with the antiskid arris of a plurality of third along the even interval of axial, filtration membrane is installed in the filter seat in the front, filter the sealing washer and install the outer wall of post-.

4. The electric anorectal ligation device for reducing cross infection according to claim 3, wherein the electric 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. A powered anorectal ligator according to any one of claims 1 to 4 wherein said device is adapted to reduce cross-infection by: the pressure release subassembly includes the pressure release key, pressure release lid and compression spring, is equipped with the interface on the exhaust duct, and the pressure release key stretches out the one end and the sliding connection of interface in the 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 interface, installs pressure release lid sealing washer between pressure release lid and the interface.

6. a powered anorectal ligator according to any one of claims 1 to 4 wherein said device is adapted to reduce cross-infection by: 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. A powered anorectal ligator according to any one of claims 1 to 4 wherein said device is adapted to reduce cross-infection by: the charging circuit comprises a charging chip and a semiconductor diode, wherein an external adapter interface is connected with a first anode of the semiconductor diode, the first anode of the semiconductor diode is further grounded through a first resistor and a first capacitor in sequence, a common end of the first resistor and a second resistor is connected with an OVPSET end of the charging chip, a second anode of the semiconductor diode is connected with an output end of a charging device, a cathode of the semiconductor diode is grounded through a second resistor and a second capacitor in sequence, the external adapter interface is further connected with an ACP pin of the charging chip through a first switching tube and a second switching tube in sequence, a source electrode of the first switching tube is connected with a source electrode of the second switching tube and then connected with a CMSRC pin of the charging chip through a third resistor, a gate electrode of the first switching tube is connected with a gate electrode of the second switching tube and then connected with an ACRV pin of the charging chip through a fourth resistor, and a pin of the charging chip is grounded through a fifth resistor, the TS pin of the charging chip is also connected with a first common terminal A through a sixth resistor, the STAT pin of the charging chip is sequentially connected with the first common terminal A through a first diode and a seventh resistor, the ISET pin of the charging chip is connected with the first common terminal A through an eighth resistor, the ISET pin of the charging chip is also grounded through a ninth resistor, the ACSET pin of the charging chip is connected with the first common terminal A through a tenth resistor, the ACSET pin of the charging chip is also grounded through an eleventh resistor, the VREF pin of the charging chip is grounded through a third capacitor, the VREF pin of the charging chip is also connected with the first common terminal A, the BATDRV pin of the charging chip is connected with the grid electrode of a third switch tube through a twelfth resistor, the BATDRV pin of the charging chip is effective in low level, the drain electrode of the third switch tube is connected with the ACP pin of the charging chip through a thirteenth resistor, the thirteenth resistor is connected with the fourth capacitor in parallel connection, and the drain electrode of the third switch tube is also connected with the AC, an ACN pin of the charging chip is grounded through a fifth capacitor, a source electrode of the third switching tube is connected with a second common terminal B, an SRN pin of the charging chip is connected with the second common terminal B, a SW pin of the charging chip is sequentially connected with the second common terminal B through a first inductor and a fourteenth resistor, a sixth capacitor is connected in parallel with two ends of the fourteenth resistor, the common terminal of the first inductor and the fourteenth resistor is connected with an SRP pin of the charging chip, a BTST pin of the charging chip is connected with an SW pin of the charging chip through a ninth capacitor, the second common terminal B is grounded through an eighth capacitor, the second common terminal B is connected with an anode of a semiconductor diode, the second common terminal outputs direct-current voltage and supplies power to the energy storage unit through an external interface, and a REGN pin of the charging chip is connected with a PGND pin of the charging chip through the ninth capacitor.

8. The electric anorectal ligation device for reducing cross infection according to claim 6, wherein the electric anorectal ligation device comprises: the output end of the controller is connected with the negative pressure pump through the switch circuit, the switch circuit comprises a fourth switch tube and a fifth switch tube, the grid electrode of the fourth switch tube is connected with the I/O port of the controller through a fifteenth resistor, the grid electrode of the fourth switch tube is grounded through a sixteenth resistor, the source electrode of the fourth switch tube is grounded, the drain electrode of the fourth switch tube is connected with the grid electrode of the fifth switch tube through a seventeenth resistor, the drain electrode of the fifth switch tube is grounded through an eighteenth resistor, the source electrode base of the fifth switch tube, the drain electrode of the fifth switch tube is grounded through a second diode, and the drain electrode of the fifth switch tube is connected with the negative pressure pump.

9. A reduced cross-infection electric anorectal ligator according to claim 3 or claim 4 wherein: 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.

10. the electric anorectal ligation device for reducing cross infection according to claim 8, wherein the electric anorectal ligation device comprises: the control mechanism further comprises a pressure sensor and a display, the pressure sensor and the display are connected with the controller respectively, the air exhaust pipeline is further communicated with a sensor connecting pipeline, the end portion of the sensor connecting pipeline is closed, and a probe of the pressure sensor is arranged in the sensor connecting pipeline.