CN111227895A

CN111227895A - Ligation anastomat

Info

Publication number: CN111227895A
Application number: CN202010152731.3A
Authority: CN
Inventors: 王永丽; 王强; 徐振锋; 陈月华; 殷凤芳; 邱永敬; 徐国良
Original assignee: Henan Tuoren Medica Device Co ltd
Current assignee: HENAN TUOREN MEDICA DEVICE Co.,Ltd.
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-06-05

Abstract

The invention discloses a ligation anastomat, which comprises: the device comprises a handle, a controller, a display, a ligation component, a negative pressure mechanism, a position sensor, a length sensor, a take-up mechanism, a shearing mechanism and a distance sensor, wherein the ligation component is used for sucking haemorrhoids and sleeving an elastic coil with an adjustable inner diameter on the haemorrhoids, the negative pressure mechanism is used for providing negative pressure for the ligation component to suck the haemorrhoids, the position sensor is used for extending into the anorectum of a patient to identify the position of an artery, the length sensor is used for detecting the length of the haemorrhoids sucked into the ligation component, the take-up mechanism is used for tightening the elastic coil when the length sensor detects that the length sucked into the ligation component reaches a standard, the shearing mechanism is used for shearing the connection between the elastic coil and an elastic line wound; the ligation component, the negative pressure mechanism, the position sensor, the length sensor, the wire rewinding mechanism, the distance sensor and the display are in signal connection with the controller. Can accurately position hemorrhoids, judge the distance between the hemorrhoids, control the ligation length of the hemorrhoids and improve the operation efficiency.

Description

Ligation anastomat

Technical Field

The invention relates to the technical field of medical instruments, in particular to a ligation anastomat.

Background

The common method for treating hemorrhoids adopts a ligation operation, and the principle is that a special rubber ring is sleeved and tied at the root or the base of an artery on the hemorrhoids, and the blood supply of the hemorrhoids is blocked by utilizing 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, which adsorbs hemorrhoids through vacuum and then sleeves the superior hemorrhoidal artery through elastic threads, so as to achieve the purpose of necrosis of the hemorrhoids.

The existing ligation device on the market adopts a hand-held gun type, generally comprises a handle and a ligation component connected with the handle, wherein the ligation component comprises an inner cavity tube and a pushing sleeve, the pushing sleeve is controlled by the handle to move towards the front end of an inner cavity tube so as to push and sleeve elastic wires wound at the front end of the inner cavity tube on hemorrhoids sucked into the inner cavity tube, and then the ligation is completed by tightening and cutting the elastic wires, the ligation device needs abundant working experience of medical staff in the use process, because the hemorrhoids are distributed along the artery in the anorectum, and the number of the hemorrhoids is multiple, the medical staff needs to judge the trend of the artery according to the experience so as to continuously ligate a plurality of hemorrhoids, and if the hemorrhoids are positioned by mistake, the pain of a patient is caused, the distance of the front end of the inner cavity tube needs to be judged by the experience of the medical staff, and the distance between adjacent hemorrhoid tissues is 2-3 cm under the general condition, if the distance is judged incorrectly, the hemorrhoid artery tissue can not be sucked, and the pain of the patient is also caused; meanwhile, the length of the hemorrhoid ligation can not be controlled, and an experienced doctor needs to control the length of hemorrhoid tissues by experience; in addition, the elastic thread needs to be tightened and cut by confirmation, which is very troublesome, cannot ensure the consistent cutting length of the elastic thread, consumes time and has low operation efficiency.

In summary, the technical staff in the field needs to solve the problems of accurately positioning hemorrhoids, accurately judging the distance between hemorrhoids, controlling the length of ligation of hemorrhoids, and ensuring the consistent cutting length of elastic thread to improve the operation efficiency.

Disclosure of Invention

In view of the above, the present invention is directed to a ligation stapler, which can accurately position hemorrhoids, accurately determine the distance between hemorrhoids, control the length of the ligation hemorrhoids, ensure the consistent elastic thread cutting length, and improve the operation efficiency.

In order to achieve the above purpose, the invention provides the following technical scheme:

a ligation stapler, comprising: the hemorrhoid treatment device comprises a handle, a controller, a display, a ligation component, a negative pressure mechanism, a position sensor, a length sensor, a take-up mechanism, a shearing mechanism and a distance sensor, wherein the ligation component is used for sucking hemorrhoids and sleeving an elastic coil with an adjustable inner diameter on the hemorrhoids, the negative pressure mechanism is used for providing negative pressure for the ligation component to suck the hemorrhoids, the position sensor is used for extending into the anus and the intestine of a patient to identify the position of an artery, the length sensor is used for detecting the length of the hemorrhoids sucked into the ligation component, the take-up mechanism is used for tightening the elastic coil when the length sensor detects that the length sucked into the ligation component reaches a standard, the shearing mechanism is used for shearing the connection of the elastic coil and an elastic wire wound on the take-up mechanism after the;

the ligation assembly is detachably arranged on the handle, the controller, the negative pressure mechanism and the distance sensor are all arranged in the handle, the display is arranged outside the handle, the position sensor and the length sensor are all arranged in the front end of the ligation assembly, the take-up mechanism is arranged on the ligation assembly, and the shearing mechanism is arranged outside the handle;

the ligation component, the negative pressure mechanism, the position sensor, the length sensor, the take-up mechanism, the distance sensor and the display are all in signal connection with the controller.

Preferably, the position sensor is a near-infrared sensing system, the near-infrared sensing system comprises a camera and a main light source, the camera and the main light source are both arranged in an inner cavity tube of the ligation assembly, and a first preset distance is arranged between the camera and the main light source and the front end part of the inner cavity tube.

Preferably, the length sensor is an infrared sensor, the infrared sensor is arranged in the inner cavity tube, and a second preset distance is arranged between the infrared sensor and the front end part of the inner cavity tube.

Preferably, shear mechanism including can follow the ligation mechanism length direction activity set up in actuating lever on the handle the front end fixedly connected with of actuating lever and edge the catch bar that actuating lever length direction set up, the front end of catch bar is equipped with shearing portion, the front end of elastic line passes shearing portion connect in elastic coil, be equipped with on the handle and be used for driving the driver of actuating lever forward motion, work as during the actuating lever forward motion, shearing portion cuts the front end of elastic line, in order to cut off elastic coil with elastic line's connection.

Preferably, the shearing part includes two rear end mutual articulated blades, two the front end cutting edge of blade is relative and all towards the elastic thread, the blade sets up in the bar sleeve, the telescopic front end of bar is equipped with the through wires hole, the front end of elastic thread passes the through wires hole connect in elastic coil.

Preferably, the blade resetting device comprises a resetting mechanism for resetting the blade, wherein the resetting mechanism comprises two elastic spring plates, and the two elastic spring plates are respectively arranged between the rear ends of the blade backs of the two blades and the strip-shaped sleeve.

Preferably, the take-up mechanism is including being used for the winding the tight line wheel of elastic line, the coaxial first gear that is provided with on the tight line wheel, be equipped with driving motor in the handle, install on driving motor's the output shaft with first gear engagement's second gear, the front end of elastic line with elastic coil connects, the tight line wheel is rotatable set up in on the handle, driving motor with controller signal connection.

Preferably, the distance sensor is a three-axis acceleration sensor.

Preferably, the ligation component comprises an inner cavity tube, a pushing sleeve and a driving mechanism, the pushing sleeve is movably sleeved on the periphery of the inner cavity tube, the driving mechanism is arranged in the handle, the driving mechanism can push the pushing sleeve along the axial direction of the pushing sleeve, and the driving mechanism is in signal connection with the controller.

Preferably, the handle is sleeved with a disposable antibacterial shell.

The invention provides a ligation anastomat, which comprises: the device comprises a handle, a controller, a display, a ligation component, a negative pressure mechanism, a position sensor, a length sensor, a take-up mechanism, a shearing mechanism and a distance sensor, wherein the ligation component is used for sucking haemorrhoids and sleeving an elastic coil with an adjustable inner diameter on the haemorrhoids, the negative pressure mechanism is used for providing negative pressure for the ligation component to suck the haemorrhoids, the position sensor is used for extending into the anorectum of a patient to identify the position of an artery, the length sensor is used for detecting the length of the haemorrhoids sucked into the ligation component, the take-up mechanism is used for tightening the elastic coil when the length sensor detects that the length sucked into the ligation component reaches a standard, the shearing mechanism is used for shearing the connection between the elastic coil and an elastic line wound;

the ligation component is detachably arranged on the handle, the controller and the negative pressure mechanism distance sensor are arranged in the handle, the display is arranged outside the handle, the position sensor and the length sensor are arranged inside the front end of the ligation component, the take-up mechanism is arranged on the ligation component, and the shearing mechanism is arranged outside the handle;

the ligation component, the negative pressure mechanism, the position sensor, the length sensor, the wire rewinding mechanism, the distance sensor and the display are in signal connection with the controller.

The scheme is characterized in that a position sensor is used for developing the focus tissue artery, a length sensor is used for quantifying and monitoring the length of the attracted hemorrhoids in real time, and the ligation component is controlled to automatically sleeve the elastic coil on the hemorrhoids according to the monitored length signal of the attracted hemorrhoids. The distance sensor can quantitatively display the moving spatial position in real time, and can accurately judge the distance between hemorrhoids. According to the detection of the sensor and the display of the detection result on the display screen, the image can be developed to facilitate the observation of an operator.

The problem of rely on experience finger-diagnosis artery on the haemorrhoids difficult, attract tissue length difficult quantitative control, non-automatic percussion, the degree of tightening up can not be quantified, the manual length inconsistent that cuts the elastic wire is solved, a series of actions pass through signal control's swift, quantization operation, have promoted operation efficiency, and whole process develops, monitors in real time, improves the accuracy, reduces the misery that the maloperation brought for the patient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a front side view of a ligation stapler according to the present invention;

FIG. 2 is a partial front view of a ligation stapler according to the present invention;

FIG. 3 is a side perspective view of a ligation stapler provided in accordance with the present invention;

FIG. 4 is a schematic view of a shearing mechanism provided by the present invention;

FIG. 5 is an enlarged view of a shearing mechanism provided by the present invention;

FIG. 6 is a schematic view of a take-up mechanism according to the present invention;

FIG. 7 is an enlarged view of the take-up mechanism provided in the present invention;

fig. 8 is an internal structural view of a shearing mechanism provided by the present invention.

In FIGS. 1-8:

1-shearing mechanism, 2-take-up mechanism, 3-infrared sensing system, 4-elastic coil, 5-inner cavity tube, 6-pushing sleeve, 7-driving mechanism, 8-driving rod, 9-trigger, 10-threading hole, 11-sleeve, 12-blade, 13-elastic sheet, 14-strip-shaped chute, 15-cross bar, 16-handle, 17-elastic line, 18-second gear, 19-driving motor, 20-pushing rod and 21-triaxial acceleration sensor.

Detailed Description

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

The core of the invention is to provide a ligation anastomat, which can accurately position hemorrhoids, accurately judge the distance between the hemorrhoids, control the length of the ligation hemorrhoids, ensure the consistent shearing length of elastic lines and improve the operation efficiency.

Referring to fig. 1 to 8, fig. 1 is a front side view of a ligation stapler according to the present invention; FIG. 2 is a partial front view of a ligation stapler according to the present invention; FIG. 3 is a side perspective view of a ligation stapler provided in accordance with the present invention; FIG. 4 is a schematic view of a shearing mechanism provided by the present invention; FIG. 5 is an enlarged view of a shearing mechanism provided by the present invention; FIG. 6 is a schematic view of a take-up mechanism according to the present invention; FIG. 7 is an enlarged view of the take-up mechanism provided in the present invention; fig. 8 is an internal structural view of a shearing mechanism provided by the present invention.

A ligation stapler, comprising: the hemorrhoid puncturing device comprises a handle 16, a controller, a display, a ligation component, a negative pressure mechanism, a position sensor, a length sensor, a take-up mechanism 2, a shearing mechanism 1 and a distance sensor, wherein the ligation component is used for sucking hemorrhoids and sleeving an elastic coil 4 with an adjustable inner diameter on the hemorrhoids, the negative pressure mechanism is used for providing negative pressure for the ligation component to suck the hemorrhoids, the position sensor is used for extending into the anus and intestine of a patient to identify the position of an artery, the length sensor is used for detecting the length of the hemorrhoids sucked into the ligation component, the take-up mechanism 2 is used for tightening the elastic coil 4 when the length sensor detects that the length sucked into the ligation component reaches the standard, the shearing mechanism 1 is used for shearing the connection of the elastic coil 4 and an elastic wire 17 wound on;

the ligation component is detachably arranged on the handle 16, the controller and the negative pressure mechanism distance sensor are both arranged in the handle 16, the display is arranged outside the handle 16, the position sensor and the length sensor are both arranged in the front end of the ligation component, the take-up mechanism 2 is arranged on the ligation component, and the shearing mechanism 1 is arranged outside the handle 16;

the ligation component, the negative pressure mechanism, the position sensor, the length sensor, the take-up mechanism 2, the distance sensor and the display are all in signal connection with the controller.

It should be noted that the elastic thread 17 is wound on the thread take-up mechanism 2, the elastic coil 4 is a front loop of the elastic thread 17, the elastic coil 4 is sleeved on the front end of the ligation assembly, one end of the ligation assembly close to the hemorrhoid is a front end, and one end of the ligation assembly close to the handle 16 is a rear end.

The distance sensor is in signal connection with a controller arranged in the handle 16, the obtained first hemorrhoid is used as an origin of coordinates, the distance of the current front end of the ligation mechanism matched with the last hemorrhoid can be obtained by the distance sensor by moving the ligation anastomat, and the controller is connected with the display to display the moving distance value; and a position sensor for identifying the trend of the artery and a length sensor for detecting the length of the hemorrhoid tissue sucked into the ligation component are arranged in the ligation component, and the position of the hemorrhoid and the length of the sucked ligation component are displayed on a display screen.

More specifically, a starting switch can be arranged on the handle 16 to facilitate starting, the starting switch on the handle 16 is pressed to start the negative pressure device, the ligation anastomat is moved according to the artery trend displayed on the display screen, negative pressure is generated in the ligation assembly to suck the haemorrhoids into the front end, when the length sensor detects that the length of the haemorrhoids sucked into the front end of the ligation assembly reaches the standard, the controller can control the ligation mechanism to sleeve the elastic coil 4 on the haemorrhoids, the take-up mechanism 2 is controlled to tighten the elastic wire 17 to tighten the haemorrhoids, a tension signal of the take-up mechanism 2 can be transmitted to the controller, and after the required tension is reached, the shearing mechanism 1 is controlled to shear the connection between the elastic wire 17 and the elastic coil 4, so that the ligation of the haemorrhoids is completed. When the next hemorrhoid is sleeved and pricked, the distance sensor can detect the distance of the next hemorrhoid and transmit signals to the controller, the controller transmits the signals to the display for displaying, the moving distance is controlled according to the distance displayed by the display, the next hemorrhoid can be accurately positioned, and then the sleeving and pricking can be completed by repeating the steps. The subsequent hemorrhoid ligation refers to the steps, and is convenient and quick.

Preferably, the elastic threads 17 are cellulose filaments. The conventional elastic thread 17 is easily released after the ligation. The cellulose silk that this scheme adopted bionic technology to make replaces traditional elastic thread 17, improves the reliability of ligation, reduces the possibility that the ligation pine takes off, improves the reliability of product ligation.

When the controller controls the self ligation mechanism to fix the elastic coil 4 to the hemorrhoids, the controller controls the take-up mechanism 2 to rotate to be synchronously tensioned, so that the operation efficiency is improved, and the operation is more intelligent.

According to the scheme, the focal tissue artery is developed by the position sensor, the length of the attracted hemorrhoids is quantitatively monitored in real time by the length sensor, and the ligation component is controlled to automatically sleeve the elastic coil 4 on the hemorrhoids according to the monitored length signal of the attracted hemorrhoids. The distance sensor can quantitatively display the moving spatial position in real time, and can accurately judge the distance between hemorrhoids. According to the detection of the sensor and the display of the detection result on the display screen, the image can be developed to facilitate the observation of an operator.

The problem of rely on experience to indicate that the artery is difficult on the haemorrhoids, attract tissue length to be difficult to quantitative control, non-automatic percussion, the degree of tightening up can not quantify, the manual length of cutting the elastic wire 17 is inconsistent is solved, a series of actions pass through signal control's swift, quantization operation, have promoted operation efficiency, and whole process develops, monitors in real time, improves the accuracy, reduces the misery that the maloperation brought for the patient.

On the basis of the above embodiment, as a further preferred option, the position sensor is a near-infrared sensing system, the near-infrared sensing system includes a camera and a main light source, the camera and the main light source are both arranged in the inner lumen tube 5 of the ligation assembly, and a first preset distance is arranged between the front end portions of the camera and the main light source and the inner lumen tube 5.

It should be noted that the first predetermined distance between the near-infrared sensor system and the front end of the inner lumen 5 is used to accommodate the insertion of the hemorrhoid, and the near-infrared sensor system is used to identify the trend of the artery through the inner lumen 5 inserted into the anorectum of the patient.

The specific principle of the near infrared sensing system is as follows: the camera at the orifice of the inner cavity tube 5 and the main light source face an imaging part, because hemoglobin has strong infrared light absorption capacity, and oxyhemoglobin and deoxyhemoglobin have strong near infrared light absorption capacity relative to other tissues, the main light source is a near infrared LED lamp with the wavelength of 760nm, and near infrared rays emitted by the main light source can be absorbed by hemoglobin in arterial blood vessels, so that the reflected light intensity is reduced, reflected light of the main light source is collected by the camera and displayed in an image processed by display equipment, the brightness of the blood vessels is darker, and the thickness, the shape and the layout of the arterial blood vessels can be accurately distinguished. Through the processing of the display, the medical staff can distinguish the artery and vein blood of the punctured area.

The embodiment adopts the LED cold light source for illumination, the camera and the display screen, can develop and record video, and is convenient for an operator to observe the focus condition so as to make accurate action, reduce misoperation and improve operation efficiency.

On the basis of the above embodiment, as a further preferable mode, the length sensor is an infrared sensor 3, the infrared sensor 3 is disposed in the inner lumen 5, and a second preset distance is provided between the infrared sensor 3 and the front end portion of the inner lumen 5.

It should be noted that the specific principle of the infrared sensor 3 is as follows: the infrared sensor 3 is a sensor which uses infrared rays as a medium to complete a measurement function, the infrared rays are also called infrared rays, and the infrared sensor has the properties of reflection, refraction, scattering, interference, absorption and the like, and the infrared sensor 3 does not contact with a measured object during measurement and has no friction, and has the advantages of high sensitivity, quick response and the like.

The infrared sensor 3 is mainly composed of an infrared detector, an infrared receiver, a radiation modulator, a signal processing system, a display screen and the like. The length of the hemorrhoid tissue is absorbed, and phase displacement generated by reciprocating the high-frequency modulated infrared ray on a distance to be measured is used for calculation.

The light beam degree is △ t, so that the length D is obtained according to D-C △ t/2, wherein the length D represents the light beam speed, the light beam is not limited by the interference of other light sources and the use environment, the light beam has the advantages of reliable work, strong anti-interference capability, high response speed, long service life and the like, in addition, although infrared rays are invisible light, the emission frequency of the infrared rays is generally about 38kHz, the detection distance is generally short, and the light beam is suitable for the ligation anastomat by adopting a reflection type.

A second preset distance is arranged between the infrared sensor 3 and the front end of the inner cavity tube 5 and used for accommodating inhaled hemorrhoidal tissues, and the first preset distance and the second preset distance can be the same or different.

In order to facilitate replacement of the ligation assembly, the near infrared sensor and the infrared sensor are connected with a fixed contact arranged on the ligation device through a movable contact, so that the assembly is convenient to disassemble, assemble and replace.

On the basis of the above embodiment, as a further preferred, the cutting mechanism 1 includes a driving rod 8 that is movably disposed on the handle 16 along the length direction of the ligation mechanism, the front end of the driving rod 8 is fixedly connected with a pushing rod 20 that is disposed along the length direction of the driving rod 8, the front end of the pushing rod 20 is provided with a cutting portion, the front end of the elastic thread 17 passes through the cutting portion and is connected to the elastic coil 4, the handle 16 is provided with a driver for driving the driving rod 8 to move forward, and when the driving rod 8 moves forward, the cutting portion cuts the front end of the elastic thread 17 to cut off the connection between the elastic coil 4 and the elastic thread 17.

It should be noted that the shearing mechanism 1 includes a shearing portion disposed at the ligation end of the ligation stapler, the elastic thread 17 connected to the elastic coil 4 passes through the shearing portion to be connected to the thread take-up mechanism 2 of the ligation stapler, the thread take-up mechanism 2 is used for tightening the elastic thread 17, the shearing portion is connected to the driving push rod 20 and the driving rod 8, and the push rod 20 and the driving rod 8 are used for driving the shearing portion to act to shear the elastic thread 17. The driver is started, the driver drives the driving rod 8 to move towards the front end, and the driving rod 8 synchronously drives the push rod 20 to move towards the front end so as to drive the shearing part to act. Preferably, the actuator is a trigger 9 hinged to a handle 16, one end of the trigger 9 being exposed from the handle 16 and the other end engaging the rear end of the drive rod. The trigger 9 is pulled to drive the driving rod to move to the front end by the trigger 9.

This embodiment simple structure, the processing of being convenient for, installation and operation can be realized cutting off to the elastic line 17 in the anus intestines outside the anus intestines through the transmission of driver.

On the basis of the above embodiment, as a further preferred, the cutting portion includes two blades 12 with their rear ends hinged to each other, the front cutting edges of the two blades 12 are opposite and face the elastic thread 17, the blades 12 are disposed in a bar-shaped sleeve, the front end of the bar-shaped sleeve is provided with a threading hole 10, and the front end of the elastic thread 17 passes through the threading hole 10 to be connected to the elastic coil 4.

It should be noted that two blades 12 are hinged on the outer side wall of the ligation mechanism and located at the front end of the ligation mechanism, the cutting edge of the blade 12 faces the

elastic line

17, and 2 blades 12 are driven to rotate relatively by a driver to cut the elastic line 17 passing between the 2 blades 12, so as to realize cutting.

Push rod and bar sleeve extend along the length direction of catch bar 20, and catch bar 20 alternates in bar sleeve, and catch bar 20 slides in bar sleeve, and two blades 12 articulate in bar sleeve through the round pin axle, and it realizes cuting to promote two blades 12 rotations in order to promote two blades to slip through actuating lever 8 promotion catch bar 20 to bar sleeve's front end, and the front end of actuating lever 8 alternates in sleeve 11, and is sliding fit.

The front end of the strip-shaped sleeve is provided with a threading hole 10 penetrating through the strip-shaped sleeve, and an elastic thread 17 penetrates through the threading hole 10 and is wound at the front end of the ligation mechanism to form an elastic coil 4.

The structure of the embodiment is simple, the two blades 12 are arranged in the strip-shaped sleeve, the blades 12 can be prevented from scratching tissues, the two blades 12 are arranged to cut the elastic line 17, the elastic line 17 can be cut more cleanly, and the cost is lower.

On the basis of the above embodiment, as a further preferred, the pushing rod 20 is provided with a strip-shaped sliding groove 14 which is consistent with the length direction of the pushing rod 20, a cross rod 15 is movably arranged in the strip-shaped sliding groove 14, and two ends of the cross rod 15 are connected to the inner wall of the strip-shaped sleeve.

It should be noted that, the quantity of spout can set up to one or more, when setting up to a plurality ofly, sets up a plurality of spouts along catch bar 20's length direction, and equal mobilizable horizontal pole 15 that is equipped with in every spout, the both ends of horizontal pole 15 respectively with the inner wall connection of sleeve 11, horizontal pole 15 and spout sliding fit, horizontal pole 15 can support catch bar 20, horizontal pole 15 can stably restrict the motion of catch bar 20 in bar spout 14, and prevent to drop.

On the basis of the above embodiment, as a further preferred, the blade resetting device includes a resetting mechanism for resetting the blade 12, the resetting mechanism includes two elastic pieces 13 having elasticity, and the two elastic pieces 13 are respectively disposed between the rear ends of the blade backs of the two blades 12 and the strip-shaped sleeve.

It should be noted that the reset mechanism is used for driving the two blades 12 after the cutting is completed to reset, and the two blades 12 can be continuously used for the next cutting after the first hemorrhoid is bound. The back of a knife blade of two blades 12 is contradicted with the inner wall of sleeve 11 through two shell fragments 13 respectively, specifically, during the cutting, shell fragment 13 is compressed, and after the cutting was accomplished, shell fragment 13 resumes elastic deformation, drives the cutting edge of 2 blades 12 and keeps away from mutually, this embodiment simple structure, the installation of being convenient for.

On the basis of the above embodiment, as a further preferable mode, the take-up mechanism 2 includes a take-up pulley for winding the elastic wire 17, a first gear is coaxially disposed on the take-up pulley, a driving motor 19 is disposed in the handle 16, a second gear 18 engaged with the first gear is mounted on an output shaft of the driving motor 19, the front end of the elastic wire 17 is connected with the elastic coil 4, the take-up pulley is rotatably disposed on the handle 16, and the driving motor 19 is in signal connection with the controller.

It should be noted that, the circumference side of tight line wheel is provided with the annular groove to hold elastic line 17, for better fixed elastic line 17, the bottom of slot is provided with the mounting hole, in order to fix elastic line 17 on tight line wheel, and follow tight line wheel and rotate.

The tightening wheel and the first gear are integrally arranged, one end of the elastic wire 17 is connected with the tightening wheel, the other end of the elastic wire 17 is wound at the front end of the ligation mechanism and is knotted to form the elastic coil 4, the elastic coil 4 formed by the elastic wire 17 is ligated on the haemorrhoid through the action of the ligation mechanism, and the tightening wheel is driven to rotate through the driving motor 19 to tighten the elastic wire 17 so as to tighten the haemorrhoid by the elastic wire 17; the driving motor 19 is connected to the controller through a current sensor, and the controller controls the start and stop of the driving motor 19 according to the received current signal to ensure the tensioning degree, it should be noted that when the elastic wire 17 is tightened, the current of the driving motor 19 changes correspondingly. The elastic coil 4 is tightened through gear transmission, and reliability is high.

In addition to the above embodiments, it is further preferable that the distance sensor is a triaxial acceleration sensor 21.

It should be noted that the three-axis acceleration sensor 21 works based on the basic principle of acceleration, which is a space vector, and on one hand, to accurately know the motion state of an object, components on three coordinate axes of the object must be measured; on the other hand, when the direction of the object movement is not known in advance, only the three-axis acceleration sensor 21 is used to detect the acceleration signal. Because the triaxial acceleration sensor 21 is also based on the gravity principle, the triaxial acceleration sensor 21 can realize a biaxial positive and negative 90-degree or biaxial 0-360-degree inclination angle, and the later-stage accuracy is higher than that of the biaxial acceleration sensor by being more than 60 degrees of the measurement angle through correction. Mounted to the handle 16 for detecting the distance and angle of travel to accurately reach the next hemorrhoid.

On the basis of the above embodiment, as a further preferred option, the ligation component comprises an inner lumen 5, a pushing sleeve 6 and a driving mechanism 7, the pushing sleeve 6 is movably sleeved on the periphery of the inner lumen 5, the driving mechanism 7 is arranged in the handle 16, the driving mechanism 7 can push the pushing sleeve 6 along the axial direction of the pushing sleeve 6, and the driving mechanism 7 is in signal connection with the controller.

It should be noted that the pushing sleeve 6 is sleeved on the inner cavity tube 5 and the pushing sleeve 6 can displace relative to the inner gun tube; in addition, the ends of the inner cavity tube 5 and the pushing sleeve 6 close to the hemorrhoids are front ends, the driving mechanism 7 drives the pushing sleeve 6 to slide towards the front end, the elastic coil 4 wound at the front end of the inner cavity tube 5 is pushed onto the hemorrhoids, and the elastic thread 17 is tightened by the take-up mechanism 2, so that the ligation of the hemorrhoids is realized. When the pushing sleeve 6 pushes the elastic coil 4 to be sleeved on the hemorrhoid, the controller controls the wire winding mechanism 2 to synchronously tighten the elastic coil 4, so that the operation efficiency is improved, and the operation is more intelligent.

Before ligation, one end of the elastic line 17 is looped to form an elastic coil 4 and is sleeved at the front end of the inner cavity tube 5, one ends of the inner cavity tube 5 and the pushing sleeve 6 close to the hemorrhoidal tissues are front ends, and the pushing sleeve 6 is pushed by the driving mechanism 7 in the handle 16 to slide towards the front end of the inner cavity tube 5 so as to push the elastic line 17 out and be sleeved on the aligned hemorrhoidal tissues. Preferably, the driving mechanism 7 is an electric push rod, and the electric push rod is in signal connection with the controller.

The ligation assembly adopted by the embodiment can automatically complete ligation according to the control signal of the controller, and is convenient and fast.

In addition to the above embodiments, it is further preferred that the handle 16 of the ligation device is sleeved with a disposable antibacterial shell.

It should be noted that the conventional anorectal ligation device is a disposable product, which increases the treatment cost of patients. In the embodiment, the handle 16 is covered with a disposable antibacterial shell which is used as a consumable, so that the time and cost for repeatedly sterilizing the handle 16 are reduced, and the handle 16 can be repeatedly used. The handle 16 is covered with a disposable antibacterial shell as a consumable, so that the treatment cost is reduced, and the sterilization difficulty and cross infection of the handle 16 are reduced.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The ligation stapler provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A ligation stapler, comprising: the hemorrhoid puncturing device comprises a handle (16), a controller, a display, a ligation component, a negative pressure mechanism, a position sensor, a length sensor, a take-up mechanism (2), a shearing mechanism (1) and a distance sensor, wherein the ligation component is used for sucking hemorrhoids and sleeving an elastic coil (4) with an adjustable inner diameter on the hemorrhoids, the negative pressure mechanism is used for providing negative pressure for the ligation component to suck the hemorrhoids, the position sensor is used for extending into the anorectum of a patient to identify the position of an artery, the length sensor is used for detecting the length of the hemorrhoids sucked into the ligation component, the take-up mechanism (2) is used for tightening the elastic coil (4) when the length sensor detects that the length sucked into the ligation component reaches a standard, the shearing mechanism (1) is used for connecting the elastic coil (4) with an elastic wire (17) wound on the take-up mechanism (2) after the take;

the ligation assembly is detachably arranged on the handle (16), the controller, the negative pressure mechanism and the distance sensor are all arranged in the handle (16), the display is arranged outside the handle (16), the position sensor and the length sensor are all arranged inside the front end of the ligation assembly, the wire rewinding mechanism (2) is arranged on the ligation assembly, and the shearing mechanism (1) is arranged outside the handle (16);

the ligation component, the negative pressure mechanism, the position sensor, the length sensor, the take-up mechanism (2), the distance sensor and the display are all in signal connection with the controller.

2. The ligation anastomat according to claim 1, wherein the position sensor is a near infrared sensing system, the near infrared sensing system comprises a camera and a main light source, the camera and the main light source are both arranged in an inner lumen (5) of the ligation assembly, and a first preset distance is arranged between the camera and the main light source and the front end of the inner lumen (5).

3. The ligation anastomat according to claim 2, wherein the length sensor is an infrared sensor (3), the infrared sensor (3) is arranged in the inner lumen (5), and a second preset distance is arranged between the infrared sensor (3) and the front end of the inner lumen (5).

4. The ligation anastomat according to claim 1, wherein the shearing mechanism (1) comprises a driving rod (8) which is movably arranged on the handle (16) along the length direction of the ligation mechanism, the front end of the driving rod (8) is fixedly connected with a pushing rod (20) which is arranged along the length direction of the driving rod (8), the front end of the pushing rod (20) is provided with a shearing portion, the front end of the elastic thread (17) penetrates through the shearing portion to be connected with the elastic coil (4), the handle (16) is provided with a driver which is used for driving the driving rod (8) to move forward, and when the driving rod (8) moves forward, the shearing portion shears the front end of the elastic thread (17) so as to cut off the connection between the elastic coil (4) and the elastic thread (17).

5. The ligation anastomat according to claim 4, wherein the cutting portion comprises two blades (12) with rear ends hinged to each other, the front edges of the two blades (12) are opposite and face towards the elastic thread (17), the blades (12) are arranged in a strip-shaped sleeve, the front end of the strip-shaped sleeve is provided with a threading hole (10), and the front end of the elastic thread (17) penetrates through the threading hole (10) to be connected with the elastic coil (4).

6. The ligation anastomat according to claim 5, characterized by comprising a reset mechanism for resetting the blades (12), wherein the reset mechanism comprises two elastic sheets (13), and the two elastic sheets (13) are respectively arranged between the rear ends of the knife backs of the two blades (12) and the strip-shaped sleeve.

7. The ligation anastomat according to any one of claims 1 to 6, wherein the take-up mechanism (2) comprises a take-up wheel for winding the elastic wire (17), a first gear is coaxially arranged on the take-up wheel, a driving motor (19) is arranged in the handle (16), a second gear (18) meshed with the first gear is arranged on an output shaft of the driving motor (19), the front end of the elastic wire (17) is connected with the elastic coil (4), the take-up wheel is rotatably arranged on the handle (16), and the driving motor (19) is in signal connection with the controller.

8. The ligation stapler according to claim 7, wherein the distance sensor is a three-axis acceleration sensor (21).

9. The ligation anastomat according to claim 8, wherein the ligation assembly comprises an inner lumen (5), a pushing sleeve (6) and a driving mechanism (7), the pushing sleeve (6) is movably sleeved on the periphery of the inner lumen (5), the driving mechanism (7) is arranged in the handle (16), the driving mechanism (7) can push the pushing sleeve (6) along the axial direction of the pushing sleeve (6), and the driving mechanism (7) is in signal connection with the controller.

10. The ligation stapler according to claim 9, wherein the handle (16) is externally sheathed with a disposable antibacterial shell.