阅读说明：本技术 一种连续多发套扎器 (Continuous multi-loop ligation device ) 是由 何昌辉 何浩翔 陆剑文 于 2021-07-23 设计创作，主要内容包括：本发明披露一种连续多发套扎器,为至少具有套管及把手的本体,本体还包括连接套管及把手的外壳。套管是由内管与外管构成,内管可借由外壁设有滑柱滑动于外管内壁的滑槽中。内管的前端设有套设多个胶圈的吸头,相对于吸头的一端设有绕线单元,胶圈受到弹力线所拉引,且弹力线贯穿内管并绕接在绕线单元上,由绕线单元调节弹力线的松紧。外壳挖设有镂空部以卡接设在绕线单元上的旋扣,移动旋扣可带动内管跟随移动,旋转旋扣可带动绕线单元旋转,以卷绕弹力线。内管的末端与软管连接,软管旁接侧向突出的排气管,且排气管的气孔裸露于外壳之外。外壳装设扳机,其末端设有弹性的密封件,扳机经扣动后,密封件对应地覆盖在排气管的气孔上,将气孔封闭。(The invention discloses a continuous multi-loop ligature device which is a body at least provided with a sleeve and a handle, and the body also comprises a shell for connecting the sleeve and the handle. The sleeve pipe is composed of an inner pipe and an outer pipe, and the inner pipe can slide in a sliding groove in the inner wall of the outer pipe by means of a sliding column arranged on the outer wall of the inner pipe. The front end of inner tube is equipped with the suction head that the cover established a plurality of rubber rings, is equipped with the wire winding unit for the one end of suction head, and the rubber ring receives the elastic thread to draw, and the elastic thread runs through the inner tube and the duplex winding is on the wire winding unit, adjusts the elasticity of elastic thread by the wire winding unit. The shell is dug to be equipped with fretwork portion and establishes the spinner on the wire winding unit with the joint, removes the spinner and can drive the inner tube and follow the removal, and rotatory spinner can drive the wire winding unit rotatory to the elastic line of coiling. The end of the inner tube is connected with the hose, an exhaust pipe protruding laterally is connected beside the hose, and an air hole of the exhaust pipe is exposed out of the shell. The trigger is installed to the shell, and its end is equipped with elastic sealing member, and the trigger is through pulling the back, and the sealing member covers on the gas pocket of blast pipe correspondingly, closes the gas pocket.)

1. A continuous multiple loop ligature apparatus, comprising a body having at least a sleeve and a handle, the body further comprising a housing connecting the sleeve and the handle, characterized in that:

the sleeve is composed of an inner pipe and an outer pipe, the outer pipe is sleeved on the periphery of the inner pipe, a sliding groove is formed in the inner wall of the outer pipe, a sliding column is arranged on the outer wall of the inner pipe in a protruding mode, the sliding groove of the outer pipe is matched with the sliding column of the inner pipe, and the sliding column of the inner pipe can move along the sliding groove of the outer pipe to enable the inner pipe to protrude out of the outer pipe; the front end of the inner pipe is provided with a suction head, one end of the suction head is provided with a winding unit, the suction head is sleeved with a plurality of rubber rings, the rubber rings are pulled by elastic wires, the elastic wires penetrate through the inner pipe and are wound on the winding unit, and the tightness of the elastic wires is adjusted by the winding unit; the winding unit comprises a rotary buckle clamped in a hollow part of the shell, the rotary buckle is exposed out of the shell, and the rotary buckle is moved in the hollow part of the shell to drive the inner pipe to move along with the shell; the rotating buckle drives the winding unit to rotate after rotating so as to wind the elastic line;

the shell is provided with an inner cavity, a hose is accommodated in the inner cavity in the handle, one end of the hose is connected with the inner pipe, and the other end of the hose is connected with an external suction unit; an exhaust pipe protruding laterally is connected beside the hose, and an air hole of the exhaust pipe is exposed out of the shell; and

the shell in the sleeve pipe with install the trigger between the handle, the end of trigger is equipped with the sealing member, the sealing member has elasticity, the trigger can touch after the knot the blast pipe, the sealing member correspondingly covers the blast pipe on the gas pocket, and then with the gas pocket seals.

2. The continuous multi-hair ligation device according to claim 1, wherein the bottom of the handle is externally connected with a negative pressure suction fitting to connect with the hose, and the hose is connected with the external suction unit through the negative pressure suction fitting.

3. The continuous multi-hair ligation device according to claim 1, wherein after the external suction unit is connected to the hose, the external suction unit is activated to make the inner tube, the hose, and the exhaust tube present a negative pressure so that the suction head of the inner tube can suck a target object by the negative pressure, and after sucking the target object, the winding unit is rotated to surround the elastic thread so that a slipknot connecting the rubber ring and the elastic thread is released, and the rubber ring is separated from the elastic thread and falls from the suction head, thereby trapping the sucked target object.

4. The continuous multi-hair ligator according to claim 1 wherein when said target is captured by said rubber band, said trigger is reset and said sealing member is removed from said air vent of said air vent tube, opening said air vent to eliminate said negative pressure.

5. The continuous multi-hair ligation device according to claim 1, wherein a valve switch is provided between the inner tube and the hose, the valve switch is connected to the trigger via a valve driving rod, the trigger is actuated to drive the valve driving rod to push the valve switch, and the valve switch is opened to communicate the inner tube and the hose.

6. The continuous multi-hair ligation device according to claim 1, wherein the hose and the sealing member are silicone or rubber.

7. The continuous multi-hair ligation device according to claim 1, wherein the inner diameter of the hose is smaller than the inner diameter of the inner tube, and wherein at least 1 electrostatic streamer is disposed within the hose.

8. The continuous multi-hair ligation device according to claim 1, wherein the winding unit comprises a reel in threaded engagement with the inside of the spinner.

9. The continuous multi-hair ligation device according to claim 8, wherein one end of the elastic thread is wound around the reel, and the other end of the elastic thread is arranged on the outer periphery of the suction head through the outer tube; the elastic thread is made of core-spun silk made of real silk wrapped polyester.

10. The continuous multi-hair ligation device according to claim 1, wherein the external suction unit is a negative pressure pump, or a suction motor.

Technical Field

The invention belongs to the technical field of surgical medical instruments, and particularly relates to a continuous multi-loop ligature device.

Background

The hemorrhoid ligation operation is a common method for treating hemorrhoids and has curative effect, but the hemorrhoid ligation operation which is clinically implemented at present is usually completed by the bare-handed operation of an operator under local anesthesia or other anesthesia, which not only wastes time and labor and is difficult to operate, but also easily causes bleeding and pain. The principle is that a specially-made rubber ring (such as a rubber ring, a latex ring, a silica gel ring, an elastic coil and the like) is sleeved and tied at the root part (or the base part) of a hemorrhoid focus tissue, the blood supply of the hemorrhoid is blocked by using the elastic retraction force of the rubber ring, so that ischemia, atrophy and necrosis are generated, the sleeved and tied tissue gradually falls off, the hemorrhoid focus tissue is sucked at the pipe orifice of a sleeved and tied device by using a negative pressure suction head, and after the suction of a negative pressure generator is stopped, the hemorrhoid focus tissue is released from the pipe orifice of the sleeved and tied device, so that hemorrhoid, phlebangioma and the like are cleaned, the wound surface tissue is repaired and healed, and the healing purpose can be achieved.

The existing negative pressure suction ligation device generally needs to be operated by multiple persons when in use, cannot realize continuous emission, wastes time and labor, is inconvenient to operate, cannot be adjusted according to the use habit of doctors, and cannot realize the stretching of a sleeve. Therefore, the application range of the vacuum suction ligation device is limited, and the flexibility and the applicability of the vacuum suction ligation device are seriously influenced. The ligation device can only realize negative pressure to the bottom once in work, and needs to be operated again once focal tissues are not adsorbed in place, so that the psychological burden of a patient is increased, and the ligation device is unfavorable for treatment; on the other hand, the ligation device can only be provided with one rubber ring for ligation, the continuous hair function cannot be realized, if the continuous hair ligation is realized, one rubber ring is inevitably installed again for operation, the operation time is repeatedly increased, and the pain of a patient is difficult to relieve.

In order to continuously launch a ligation rubber ring for multiple times in the existing negative pressure suction ligation device, chinese patent publication No. CN112315534A discloses a continuous ligation device for multiple times, wherein an elastic thread operating mechanism is arranged below a gun barrel, after each negative pressure suction, the elastic thread is loosened by manually turning the elastic thread operating mechanism, so that the elastic thread is separated from the tube orifice to sheath the hemorrhoid, and then the elastic thread operating mechanism is manually turned again to enable the elastic thread to shrink tightly and firmly sheath the base part of the hemorrhoid. Although the elastic thread ligation device can continuously and frequently emit the elastic thread, the length of the elastic thread which is loosened is not easy to adjust, so that the ligation time can be prolonged due to the fact that the elastic thread is too far away from the haemorrhoids. Therefore, there is a need to design a continuous multi-hair ligation device which is easy to ligate and simple to operate.

The background section is only used for illustrating the invention, and therefore the disclosure in the background section may include some known technologies which are not known to those of ordinary skill in the art. The statements in the "background" section do not represent that matter or the problems which may be solved by one or more embodiments of the present invention, but are known or appreciated by those skilled in the art before filing the present application.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a continuous multi-loop ligation device, which can achieve the purposes of rapidly absorbing targets such as hemorrhoids, phlebangioma and the like by negative pressure through tightly or loosely rotating elastic threads by fingers and starting negative pressure operation by pulling a trigger, and pull the elastic threads and a rubber ring apart so that the rubber ring can sleeve the targets to rapidly complete the operation.

To achieve the above object, the present invention provides a continuous multi-hair ligation device, which is a body at least having a sleeve and a handle, the body further comprising a housing connecting the sleeve and the handle. The sleeve is composed of an inner pipe and an outer pipe, the outer pipe is sleeved on the periphery of the inner pipe, a sliding groove is formed in the inner wall of the outer pipe, a sliding column is arranged on the outer wall of the inner pipe in a protruding mode, the sliding groove of the outer pipe is matched with the sliding column of the inner pipe, and the sliding column of the inner pipe can move along the sliding groove of the outer pipe to enable the inner pipe to protrude out of the outer pipe forwards. The front end of the inner tube is provided with a suction head, one end of the suction head is provided with a winding unit, the suction head is sleeved with a plurality of rubber rings, the rubber rings are pulled by elastic wires, the elastic wires penetrate through the inner tube and are wound on the winding unit in a parallel mode, and the tightness of the elastic wires is adjusted by the winding unit; the winding unit comprises a rotary buckle clamped in the hollow part of the shell, the rotary buckle is exposed out of the shell, and the inner pipe is driven to move along with the rotary buckle by moving in the hollow part of the shell; the rotating buckle drives the winding unit to rotate after rotating so as to wind the elastic line. The outer shell is provided with an inner cavity, the inner cavity in the handle is used for accommodating a hose, one end of the hose is connected with the inner pipe, and the other end of the hose is connected with an external suction unit; the side of the hose is connected with an exhaust pipe which protrudes laterally, and an air hole of the exhaust pipe is exposed out of the shell; and the shell is provided with a trigger between the sleeve and the handle, the tail end of the trigger is provided with a sealing piece, the sealing piece has elasticity, the trigger can touch the exhaust pipe after being buckled, and the sealing piece correspondingly covers the air hole of the exhaust pipe so as to seal the air hole.

In a preferred embodiment, the bottom of the handle is externally connected with a negative pressure suction connector to be connected with a hose, and the hose is connected with an external suction unit through the negative pressure suction connector.

In a preferred embodiment, after the external suction unit is connected to the hose, the external suction unit is activated to make the inner tube, the hose and the exhaust pipe present a negative pressure, so that the suction head of the inner tube can suck the target object by the negative pressure, and after sucking the target object, the winding unit is rotated to surround the elastic thread, so that the loose joint of the rubber ring and the elastic thread is released, and the rubber ring is separated from the elastic thread and falls from the suction head, thereby trapping the sucked target object.

In a preferred embodiment, when the target is covered by the rubber ring, the trigger is reset, and the sealing element is separated from the air hole of the exhaust pipe, so that the air hole is opened to eliminate the negative pressure.

In a preferred embodiment, a valve switch is arranged between the inner tube and the hose, the valve switch is connected with the trigger through a valve driving rod, the trigger drives the valve driving rod to push the valve switch after being pulled, and the valve switch is opened so that the inner tube is communicated with the hose.

In a preferred embodiment, the hose and the sealing member are made of silicone or rubber.

In a preferred embodiment, the inner diameter of the hose is smaller than the inner diameter of the inner pipe, and at least 1 electrostatic streamer is arranged in the hose.

In a preferred embodiment, the winding unit includes a reel threadedly engaged with the inside of the spinning ring.

In a preferred embodiment, one end of the elastic wire is wound on the reel, and the other end of the elastic wire penetrates through the outer pipe and is arranged on the periphery of the suction head; the elastic thread is made of core-spun silk of real silk wrapped terylene.

In a preferred embodiment, the external suction unit is a negative pressure pump, or a suction motor.

The continuous multi-hair ligation device provided by the invention overcomes the defect that the hemorrhoid ligation device is difficult to operate in the prior art, so that a doctor can use the device smoothly during operation, and can grow or shorten the length of the inner tube in real time when the operation distance needs to be adjusted so as to contact with a target tissue more quickly. The trigger structure is improved, and the sealing piece is additionally arranged to cover the air hole of the exhaust pipe, so that the air suction/exhaust means can be simply controlled, and the operation convenience is improved.

Drawings

Figure 1 is a front view of a continuous multi-gang ligation apparatus according to the disclosed technique;

FIG. 2A is a schematic view of an assembly showing a cannula of a continuous multi-round ligator, in accordance with the disclosed technique;

FIG. 2B is a perspective schematic view of an outer tube of a continuous multiloop ligator, according to the disclosed technique;

FIG. 3 is a schematic diagram showing the internal structure of a continuous multi-round ligator, in accordance with the disclosed technique;

FIG. 4 is a schematic diagram showing an exemplary configuration of a hose to inner tube connection of a continuous multi-gang ligator, in accordance with the disclosed technique;

FIG. 5 is a schematic diagram showing an exploded view of the inner tube and tip of a continuous multiloop ligator, according to the disclosed technique;

FIG. 6A is a schematic diagram illustrating an exploded view of a wire winder unit of a continuous multi-gang ligator, in accordance with the disclosed technique; and

figure 6B is a schematic diagram showing a rotation buckle of a continuous multi-gang ligation device in a perspective view in the Y-direction, in accordance with the techniques disclosed herein.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer and to implement the present invention, technical features and embodiments of the present invention are specifically illustrated in the accompanying drawings and described in detail, and preferred embodiments are exemplified. The drawings referred to below are schematic representations relating to the features of the invention and are not necessarily drawn to scale. The description of the embodiments related to the present invention will not be repeated, except for those skilled in the art.

Referring to fig. 1, fig. 1 is a front view of the continuous multiple ligation device according to the present invention, and fig. 1 is a front view of the continuous multiple ligation device viewed in the XZ plane, as shown in fig. 1, a main body 1 of the continuous multiple ligation device at least includes a handle 200 suitable for being held by a hand and a sleeve 20 connected to the handle 200, the sleeve 20 is composed of an outer tube 21 and an inner tube 22, an inner diameter of the outer tube 21 is larger than an inner diameter of the inner tube 22, the outer tube 21 can be fitted around an outer circumference of the inner tube 22, and the outer tube 21 is connected to a housing 10 to form the main body 1. Referring to fig. 2A and 2B, fig. 2A is a schematic view of a bushing assembly; fig. 2B shows a perspective schematic view of the outer tube. As shown in fig. 2A and 2B, the inner wall of the outer tube 21 is provided with a sliding slot 210, the outer wall of the inner tube 22 is provided with a sliding column 220 in a protruding manner, the outer tube 21 and the inner tube 22 are matched to model, i.e., the mold is opened, so that the sliding slot 210 of the outer tube 21 and the sliding column 220 of the inner tube 22 are matched with each other, the sliding column 220 of the inner tube 22 can move along the sliding slot 210 of the outer tube 21 to protrude the inner tube 22 from the outer tube 21, and the length of the protruding portion of the inner tube 22 from the outer tube 21 can be adjusted. In fig. 1, the housing 10 comprises an operating section 100 in an L-shaped configuration with the handle 200, i.e. the operating section 100 is located between the outer tube 21 and the handle 200. The side or top of the operation section 100 may be hollowed with a hollow portion 101. fig. 1 shows an embodiment where the hollow portion 101 is disposed on the side of the operation section 100, and the bottom trigger 40 of the operation section 100 and the handle 200 correspondingly extend downward.

Next, referring to fig. 1 and fig. 3, fig. 3 is a schematic diagram of an internal structure of the continuous multi-strand ligation device. As shown in fig. 1 and 3, the housing 10 has an inner cavity, and the inner cavity in the handle 200 accommodates a hose 30, one end of the hose 30 is connected to the inner tube 22, and the other end can be connected to an external suction unit (not shown). Specifically, the bottom of the handle 200 is externally connected to a negative pressure suction connector 50 and connected to the hose 30, and the hose 30 is connected to an external suction unit, which may be a negative pressure pump or a suction motor, through the negative pressure suction connector 50. The flexible tube 30 is connected to the exhaust pipe 31 protruding laterally, and the air hole 310 of the exhaust pipe 31 is exposed outside the housing 10. The trigger 40 is provided at its distal end with a sealing member 41, and the sealing member 41 has elasticity, and is preferably made of silicone rubber or rubber. The trigger 40 can touch the exhaust pipe 31 after being pulled, and the sealing member 41 correspondingly covers the air hole 310 of the exhaust pipe 31, thereby sealing the air hole 310.

Referring to fig. 4, another embodiment of the present invention is shown in fig. 4, which is a schematic view of an exemplary configuration of a hose connected to an inner tube. As shown in fig. 4, the inner diameter of the hose 30 is smaller than the inner diameter of the inner tube 22, the inner tube 22 is connected to the hose 30 through the adapter 7, the valve switch 8 is disposed between the inner tube 22 and the hose 30, the valve switch 8 is connected to the trigger 40 through the valve driving rod 80, the trigger 40 drives the valve driving rod 80 to push the valve switch 8 after being pushed, and the valve switch 8 is turned on, so that the inner tube 22 and the hose 30 communicate with the hose 30. In this embodiment, the base of the trigger 40 may be provided with a return spring 9, the return spring 9 allowing the trigger 40 to spring back when the finger releases the trigger 40. In order to reduce the accumulation of suspended matters in the air in the hose 30, in the embodiment of fig. 3, at least 1 electrostatic streamer 301 may be disposed inside the hose 30, and the material thereof is a low-density textile fabric with certain water absorption and wear resistance, including nylon, polyester, or spandex. The length of the electrostatic streamers 301 is less than the length of the hose 30 or the inner tube 22 and the width is less than the inner diameter of the hose 30. After the external suction unit is started, the airflow entering the hose 30 and the inner tube 22 forms turbulent flow, and the electrostatic ribbon 301 is driven to rub against the inner wall of the tube body to generate static electricity, so that the effect of adsorbing suspended pollutants in the airflow is achieved.

With continued reference to fig. 1 and 3, the inner tube 22 has a suction head 23 at the front end and a winding unit at the rear end. The suction head 23 is sleeved with a plurality of rubber rings 28, the rubber rings 28 are pulled by elastic wires 201 wound on the outer wall of the inner tube 22 at one end opposite to the suction head 23, the elastic wires 201 penetrate through the inner tube 22 and are wound and connected on a winding unit at the rear end, and the tightness of the elastic wires 201 is adjusted by the winding unit. In one embodiment, the suction head 23 and the inner tube 22 can be integrally formed, and the suction head 23 at the front end is designed into a bell mouth shape, and the inner diameter of the suction head is larger in the front and smaller in the rear. In another embodiment, the suction head 23 can be externally connected to the inner tube 22, please refer to fig. 5, and fig. 5 shows an exploded structure diagram of the inner tube and the suction head. As shown in fig. 5, the suction head 23 is clamped at the front end of the inner tube 22, wherein two grooves 221 are circumferentially formed on the front end side wall of the inner tube 22, the two grooves 221 are respectively formed on the outer walls of the two sides of the inner tube 22, the grooves 221 penetrate the side wall of the inner tube 22 into a hole, a protrusion 223 is further arranged in each groove 221, a clamping rail 222 is formed on the inner wall of the inner tube 22 perpendicular to the grooves 221, and the clamping rail 222 is communicated with the grooves 221. More specifically, the rear end of the suction head 23 is integrally provided with a clamping section 231, the outer diameter of the clamping section 231 is smaller than the inner diameter of the suction head 23, the suction head 23 and the clamping section 231 are transited through a cylinder, the periphery of the rear end of the clamping section 231 is provided with a clamping key 232, the axial width of the clamping key 232 is slightly smaller than that of the groove 221, the size of the protrusion 223 just allows the clamping key 232 to pass through in a rotating manner, the number of the clamping keys 232 is 2, the clamping keys are respectively arranged on two sides of the periphery of the clamping section 231, the position between the two clamping keys 232 corresponds to the position between the two grooves 221, and when the rotation locking is carried out, the two clamping keys 232 just pass through the protrusion 223. The clamping section 231 at the rear of the clamping key 232 is further integrally connected with a sealing section 233, the rear end of the sealing section 233 can contact with a retaining pillar (not shown) arranged in the radial direction of the groove 221, and a rubber pad (not shown) is additionally arranged between the sealing section 233 and the retaining pillar, so that the suction head 23 is clamped with the inner tube 22 in a sealing manner.

In one embodiment, referring to fig. 6A, fig. 6A shows an exploded view of the winding unit, as shown in fig. 6A, the winding unit 6 includes a spinning ring 60 and a winding reel 61 connected to each other, the spinning ring 60 may be in a straight shape or a cross shape, and a screw tip 62 is provided at the center thereof to be screwed with the winding reel 61 and disposed at the end of the inner tube 22 in pairs. In fig. 1, when viewed from the XZ plane, the rotating buckle 60 is clamped in the hollow portion 101 of the housing 10 and exposed outside the housing 10, and the inner tube 22 can be driven to move along by moving the rotating buckle 60 in the hollow portion 101 of the housing 10. The reel 61 includes a center post 601, a first stop ring 611, and a second stop ring 612, wherein a spool bearing 610 is connected between the first stop ring 611 and the second stop ring 612, the center post 601, the first stop ring 611, the second stop ring 612, and the spool bearing 610 are integrally formed, the diameter of the first stop ring 611 is larger than the diameter of the second stop ring 612, and the diameter of the second stop ring 612 is larger than the diameter of the spool bearing 610. Referring to fig. 6A and 6B, fig. 6B shows a perspective view of the spinning ring in the Y direction of the connection between the reel 61 and the spinning ring 60. As shown in fig. 6A and 6B, the reel 61 is screwed to the inside of the turn buckle 60 through the center post 601, the center of the turn buckle 60 has a screw tip 62 along the Y-axis direction, and the screw tip 62 has a screw thread that can be screwed to the center post 601 of the reel 61. One end of the elastic thread 201 is wound on the reel 61, the other end of the elastic thread penetrates through the inner tube 22 and then is connected with the rubber ring 28 arranged on the periphery of the suction head 23 in a loose joint mode, as the elastic thread 201 wound on the reel 61 is more and more, the first rubber ring 28 is pulled and the loose joint is loosened, so that the first rubber ring 28 is separated from the suction head 23 to sleeve the haemorrhoid tissues, and the rest rubber ring 28 is left to be used when the ligation is fired next time. Alternatively, in one embodiment, a plurality of blades may be provided radially around the periphery of the suction port of the suction head 23, and the rubber ring 28 is cut by the blades to be disconnected from the elastic wire 201 when being pulled down from the suction head 23. In addition, the spinning ring 60 can be used for driving the spinning reel 61 to rotate; the spinning ring 60 is rotated to rotate the reel 61, thereby tightening the elastic wire 201.

In one embodiment, a continuous multi-gang ligator is provided that can be recycled for reuse multiple times after sterilization. The hose 30 is made of silica gel or rubber, and can be elastically stretched in the inner cavity, and when the inner tube 22 moves forwards and protrudes out of the outer tube 21 to be stretched, the elastic hose 30 has the following traction adaptability. In addition, in one embodiment, the exhaust pipe 31 adjacent to the hose 30 is preferably a plastic pipe or a rubber pipe to increase contact elasticity with the sealing member 41 provided at the trigger 40, thereby preventing the sealing member 41 from being easily worn after a long period of use. The outer tube 21 and the inner tube 22 are made of medical stainless steel, the outer wall (the side in contact with the rubber ring 28) is subjected to sand blasting treatment, and the inner wall (the side not in contact with the rubber ring 28) keeps smooth. Before use, the outer wall of the inner tube 22 is soaked with physiological saline to reduce the static friction force between the rubber ring 28 and the outer wall surface of the inner tube 22, and the phenomenon that 2 or more rubber rings 28 are ejected at a time is avoided. The elastic thread 201 is made of a core-spun silk material of real silk wrapped with terylene. Wherein 1 ply of polyester fiber with 8 to 10 deniers is used as a core, 3 plies of real silk fiber with 12 to 21 deniers are used as wrapping silk, and 9 plies of core-spun silk are twisted into one ply to obtain the yarn. The elastic thread 201 is also soaked with physiological saline before use. Adopt the wire rod of other materials, can absorb the body fluid of affected part in the use, lead to the inner wall frictional force of elastic line 201 and inner tube 22 to increase, or lead to elastic line 201 elasticity reduction after absorbing water, or lead to elastic line 201 to absorb water the back extension, above-mentioned condition all can add the control degree of difficulty in the use. The core spun yarn made of real silk-wrapped terylene is used as the material of the elastic thread 201, so that the problem caused by the adoption of common elastic fiber in the using process can be avoided. The elastic thread 201 is disposable, and is disposed after each use, and a new elastic thread 201 is replaced before the next use.

The working principle process of the continuous multi-loop ligation device comprises the following steps: when the handle 200 is held by a hand during operation, the negative pressure suction connector 50 is connected to the external suction unit and started to make the inside of the hose 30 in a negative pressure state, the trigger 40 is pulled to trigger the valve switch 8, the valve switch 8 is opened to communicate the hose 30 with the inner tube 22, the hose 30 and the exhaust pipe 31 all present negative pressure, and the suction head 23 of the inner tube 22 sucks in external air. After the trigger 40 is pulled, the air hole 310 of the exhaust pipe 31 is blocked by the sealing member 41. The suction head 23 is aligned with the haemorrhoidal tissue and the turnbuckle 60 on the housing 10 can be moved, if necessary, to travel within the hollowed-out portion 101 to adjust the elongated length of the inner tube 22 until the suction head 23 can pick up haemorrhoidal tissue. Then, the elastic thread 201 is wound by turning the reel 61 with the thumb until the loop of the rubber ring 28 connected to the elastic thread 201 is released to release the rubber ring 28, the rubber ring 28 is dropped off the suction head 23 by the elastic force and is caught by the sucked hemorrhoidal tissue, and the rubber ring 28 is automatically contracted and tightly caught by the hemorrhoidal tissue. At the same time, the finger is removed from the trigger 40, the trigger 40 is reset, the sealing element 41 is separated from the exhaust tube 31 to open the air hole 310, so as to eliminate the negative pressure state, and the sucked hemorrhoidal tissues and the rubber ring 28 are discharged from the suction head 23 to be separated from the ligation device, thereby completing the operation. For the next operation, the trigger 40 is pulled to start the negative pressure operation, i.e. the process, so that the hemorrhoid tissues can be continuously and repeatedly pricked and removed.

Compared with the prior art, the invention has the following advantages:

the structure is simple: the trigger 40, the handle 200 and the toggle device which can be configured in a plurality of numbers are omitted, so that the advantage of simple structure and convenient manufacture is realized. In addition, the air path is optimized, the closed space in the shell 10 is simplified into only two main air paths, a negative pressure cylinder is omitted, and a pressure relief means is also simplified, so that although the air paths are simplified, the adsorption/exhaust effect is not good.

Convenience: the sealing element 41 is arranged on the trigger 40, and the trigger 40 is pulled to drive the sealing element 41 to move so as to cover the air hole of the exhaust pipe 31, so that a closed space is formed; and the trigger 40 is pulled to open the communication between the hose 30 and the inner tube 22, so as to trigger the airtight space to start the negative pressure mode. The requirement of intelligent operation is met, and the doctor can perform the operation more smoothly.

Easy operability: the elastic thread 201 penetrates through the inner tube 22 and is connected with the rubber ring 28 through a slipknot, so that the rubber ring 28 can be continuously pushed away from the suction head 23, the problem that multiple continuous loop ligatures are not required to be operated is solved, the operation convenience is greatly improved, and the hemorrhoid operation is smoothly executed.

Controllable adjustability: the sleeve 20 sleeved by the outer tube 21 and the inner tube 22 can adjust the length of the inner tube 22 protruding out of the outer tube 21 through a manual fine adjustment mode, so that the suction head 23 can be aligned more quickly to contact with the hemorrhoidal tissues, the operation efficiency can be improved, the time can be saved, and the pain of a patient can be relieved.

The above description is only for the preferred embodiment of the present invention and should not be used to limit the scope of the present invention; while the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.