CN110353769A - An elastic thread ligation device with single drive and thread trimmer - Google Patents

Abstract

The invention discloses a single-drive thread-cutting elastic thread ligation device, which comprises a gun body, on which at least one telescopic driving device, a negative pressure tube and a plurality of elastic threads are arranged; Set on the gun head of the gun body, the other end of the elastic line is connected with the wire take-up device, and the wire take-up device is arranged on the gun body; one end of the negative pressure tube extends to the gun head and communicates with the outside world, and the other end of the negative pressure tube is connected with the outside world. The negative pressure device is connected; the gun body is equipped with a tangent rod, and the front end of the tangent rod forms a blade, and the blade is set against the slipknot formed by the elastic thread. Thread cutting rod, the rear end of the thread cutting rod is opposite to the output end of the telescopic driving device, each telescopic driving device corresponds to multiple thread cutting rods, and corresponds to the distance between the rear end of each thread cutting rod of the same telescopic driving device and the output end of the telescopic driving device Not equal. The invention is applied in the field of medical equipment.

Description

An elastic thread ligation device with single drive and thread trimmer

technical field

The invention relates to medical device technology, in particular to an elastic thread ligation device with a single driving thread trimmer.

Background technique

The patent document whose application number is CN109124717A discloses an elastic thread ligation device with a thread cutting device, including a gun head, a gun body, a negative pressure tube and at least one elastic thread, the gun head is a hollow tubular structure, and the At least one threading hole is provided in the pipe wall of the gun head, and the threading hole includes a first hole arranged at the front end of the threading hole and a second hole at the rear end of the threading hole, and the first hole is arranged at the front end of the gun head. mouth end, the second orifice is arranged on the tube wall of the gun head, and the negative pressure tube passes through the gun body after being connected with the negative pressure device and extends to the gun head; the gun body is provided with at least one power driving device;

The elastic thread forms an elastic thread rope sleeve in the form of a slipknot and is sleeved on the outer wall of the gun head. The elastic thread is passed through the first hole, passed through the threading hole, and then passed through the second hole and connected to the electric drive device. connected; the hole diameter of the threading hole is greater than the diameter of the elastic line and smaller than the diameter of the slipknot, and each elastic line corresponds to a threading hole; the two sides of the gun head are respectively provided with blades, and the blades are located at the first orifice and Between the second openings and the blade edge of the blade is arranged near the second opening; the gun body is provided with a push-pull driver, and the output end of the push-pull driver is provided with a push rod, and the push rod extends to the second The hole is supported against the elastic lines, and each elastic line corresponds to a push rod.

The elastic thread ligation device in the above-mentioned comparative document cuts the elastic thread by squeezing the push rod and the blade, and each push rod needs to be provided with a push-pull type driver, so the number of push-pull type drive parts is too large, and the structure is not simplified enough. Increased manufacturing costs and maintenance costs.

In addition, the elastic thread ligation device in the above-mentioned reference document needs to be provided with a separate blade, and the elastic thread can be cut off only when the blade cooperates with the push rod. For the blade that is set separately, how to fix the blade firmly and how to make the blade ensure that the blade and the push rod correspond well all need to go through cumbersome design. After a long time of use, the fixed blade is still easy to loosen, so there are still many troubles. There may also be continuous cutting when cutting the thread.

Contents of the invention

The main purpose of the present invention is to provide a single-drive thread-cutting elastic thread ligation device, a telescopic drive device can push multiple push rods to cut the thread, no separate blades are required, the structure is simplified, and the manufacturing cost and maintenance cost are saved .

In order to achieve the above object, the present invention proposes a single-drive thread trimming elastic thread ligation device, which includes a gun body, and the gun body is provided with at least one telescopic drive device, a negative pressure tube and a plurality of elastic threads;

One end of the elastic line is sleeved on the gun head of the gun body in the form of a slipknot, and the other end of the elastic line is connected with a wire take-up device, and the wire take-up device is arranged on the gun body;

One end of the negative pressure tube extends to the gun head and communicates with the outside world, and the other end of the negative pressure tube is connected with the negative pressure device;

A tangent bar is movable on the gun body, and the front end of the tangent bar forms a blade, and the blade abuts against the slipknot formed by the elastic thread. Corresponding to a thread cutting rod, the rear end of the thread cutting rod is opposite to the output end of the telescopic drive device, each telescopic drive device corresponds to multiple thread cutting rods, and the rear end of each thread cutting rod corresponding to the same telescopic drive device is connected to the output end of the telescopic drive device The distance between the ends varies.

As a further improvement, the output end of the telescopic drive device is provided with a push plate, the plate surface of the push plate is opposite to the rear end of each corresponding thread cutting rod, and the rear end of each thread cutting rod corresponding to the same push plate is in contact with the push plate. The distance between the boards varies.

As a further improvement, the telescopic driving device includes a telescopic driving member and a first switch, the telescopic driving member is electrically connected to the first switch and the power supply device respectively, and the first switch is arranged on the gun body.

As a further improvement, the telescopic drive is a linear motor.

As a further improvement, the telescopic drive is a hydraulic cylinder.

As a further improvement, the telescopic driving member is an air cylinder.

As a further improvement, the front part of the thread cutting rod is tubular, the end of the tubular part of the thread cutting rod forms a beveled blade, the sharp part of the beveled blade is close to the gun body, and the beveled blade is set against the elastic line to form a blade. of the slipknot.

As a further improvement, the wire take-up device includes a wire take-up drive device, a wire reel, a wire storage box, and a guide device respectively arranged on the gun body. The end of the elastic wire close to the gun body is connected with a polyester thread, and each polyester thread They are respectively wound on the guide device, and each polyester thread is also wound and set in the wire storage box and passes through the wire storage box. One ends of the wires are respectively wound on the winding disks, and the winding disks are connected with the drive device for driving the wires.

As a further improvement, the wire storage box includes a box body, and a plurality of wire storage pieces are inserted in the box body, the number of the wire storage pieces is equal to the number of polyester threads, and each polyester thread is wound on the corresponding storage on the line.

As a further improvement, a first threading hole is provided in the wire storage piece, the two ends of the first threading hole are respectively located on the two end faces of the wire storage piece, and the end of each polyester thread close to the winding reel passes through the first threading hole Then wind it on the winding reel.

Compared with the prior art, the beneficial effects of the technical solution of the present invention:

The single-drive thread-cutting elastic thread ligation device of the present invention covers the patient's affected part through the negative pressure tube at the gun head. After the negative pressure device generates negative pressure, the thread is taken up by the thread take-up device so that the slipknot formed by the elastic thread is placed on the patient's chest. After the lesion is taken up to a certain extent, the thread cutting rod is pushed by the telescopic drive device, so that the blade formed at the front end of the thread cutting rod squeezes the elastic thread to cut off the elastic thread. The present invention does not need a separate blade, but a blade is provided at the front end of the thread cutting rod, and the elastic thread can be cut directly through the blade at the front end of the thread cutting rod, which saves materials, simplifies the structure, saves installation steps, and is easy to operate and easy to replace .

In addition, there are multiple elastic threads in the present invention, and each elastic thread is correspondingly provided with a thread cutting rod, therefore, the number of thread cutting rods is also multiple. However, the principles of the present invention require only one telescoping drive to be provided. It is mainly because the distance between the rear end of different thread cutting rods and the output end of the telescopic driving device is different, so that the telescopic driving device can squeeze different thread cutting rods when extruding. Compared with the thread trimming method in the patent document with the application number CN109124717A, the present invention saves the number of telescopic driving devices, simplifies the structure, and saves manufacturing cost and maintenance cost.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative effort.

Fig. 1 is the exploded schematic view of the elastic thread ligation device;

Fig. 2 is a partially enlarged schematic diagram of part A of Fig. 1;

Fig. 3 is a schematic diagram of disassembling the elastic thread ligation device;

Fig. 4 is another exploded schematic view of the elastic thread ligation device;

Fig. 5 is a schematic diagram of the structure of the wire storage box;

Fig. 6 is a schematic diagram of another structure of the wire storage box;

Fig. 7 is a schematic diagram of the structure of the wire storage sheet and the polyester thread;

Fig. 8 is a schematic diagram of the structure of the wire storage sheet;

Fig. 9 is a schematic structural view of the anus lens barrel;

Fig. 10 is another schematic structural view of the anus lens barrel;

Figure 11 is a schematic diagram of the relationship between the thread cutting rod, the push plate, and the telescopic driving device;

Fig. 12 is a schematic diagram of the relationship between the gun head and the thread cutting rod.

The markings in the figure represent the following:

1 gun body; 2 negative pressure tube; 3 elastic thread, 31 polyester thread, 32 tangent rod, 33 push plate; 4 gun head, 41 second threading hole, 42 fuse piece, 43 detection channel; 5 guiding device, 51 rotating rod , 52 guide wheel; 6 wire storage box, 61 box body, 611 card hole, 62 wire storage sheet, 621 card, 622 first threading hole, 63 column; 7 winding reel, 71 winding rod, 72 winding wheel, 73 winding slots; 8 take-up driving parts, 81 first gears, 82 second gears; 9 anus lens barrels, 91 clips, 92 clips, 93 concave holes, 94 protrusions.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

In addition, in the present invention, descriptions such as "first", "second" and so on are used for description purposes only, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two or more, such as three, unless otherwise specifically defined.

In the present invention, unless otherwise specified and limited, the terms "connection" and "fixation" should be understood in a broad sense, for example, "fixation" can be a fixed connection, a detachable connection, or an integral body; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be an internal communication between two elements or an interaction relationship between two elements, unless otherwise clearly defined. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In addition, the technical solutions of the various embodiments of the present invention can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered as a combination of technical solutions. Does not exist, nor is it within the scope of protection required by the present invention.

Please refer to FIG. 1 to FIG. 12 , a single-drive thread trimmer elastic thread ligation device includes a gun body 1, and the gun body 1 is provided with at least one telescopic drive device, a negative pressure tube 2 and a plurality of elastic threads 3;

One end of the elastic thread 3 is sleeved on the gun head 4 of the gun body 1 in the form of a slipknot, and the other end of the elastic thread 3 is connected with the wire take-up device, and the wire take-up device is arranged on the gun body 1;

One end of the negative pressure tube 2 extends to the gun head 4 and communicates with the outside world, and the other end of the negative pressure tube 2 is connected with a negative pressure device, and the negative pressure device is a negative pressure machine;

The gun body 1 is movable with a tangent bar 32, the front end of the tangent bar 32 forms a blade, and the blade abuts against the slipknot formed by the elastic thread 3, the quantity of the tangent bar 32 is equal to the quantity of the elastic thread 3, and each elastic thread 3 corresponds to A thread cutting rod 32, the rear end of the thread cutting rod 32 is opposite to the output end of the telescopic drive device. The distance between the outputs varies.

In this embodiment, in principle, only one telescopic driving device needs to be provided, but it is also possible to arrange two or more telescopic driving devices, and each telescopic driving device can correspond to multiple thread cutting rods 32 . As shown in Fig. 11 and Fig. 12, the number of elastic force lines 3 and thread cutting rods 32 in Fig. 11 and Fig. 12 is four, but only one telescopic drive device is provided. For example, the distances between the rear ends of four thread cutting rods 32 and the output ends of the telescopic drive device are successively 3mm, 6mm, 9mm, and 12mm. Elastic thread 3 is cut off. When cutting the thread again, the output end of the telescopic driving device advances 3mm again, then the elastic thread 3 at the original distance of 6mm can be cut off, and by analogy, the remaining elastic thread 3 can be cut successively without interfering with each other. The operation is also relatively simple.

In this embodiment, the output end of the telescopic drive device is provided with a push plate 33, the plate surface of the push plate 33 is opposite to the rear end of each corresponding thread cutting rod 32, and the rear end of each thread cutting rod 32 corresponding to the same push plate 33 is opposite to the rear end of each thread cutting rod 32 The distances between the board surfaces of the pushing boards 33 are not equal. Setting the push plate 33 can increase the contact surface with each thread cutting rod 32 , so as to facilitate pushing the thread cutting rod 32 . If the push plate 33 is not provided, the output end of the telescopic drive device and each thread cutting rod 32 must have sufficient contact surfaces. Of course, on this condition, the effect will still be better after the push plate 33 is set.

In this embodiment, the telescopic drive device includes a telescopic drive member and a telescopic drive switch, the telescopic drive member is electrically connected to the telescopic drive switch and the power supply, and the telescopic drive switch is provided on the gun body 1 .

In this embodiment, the telescopic driving part is a linear motor, and the linear motor has a relatively stable thrust, so that the thread cutting rod 32 has a stable shearing force.

In this embodiment, the telescopic driving part is a hydraulic cylinder, and the thrust of the hydraulic cylinder is relatively large, so that the thread cutting rod 32 has a greater shearing force.

In this embodiment, the telescopic driving part is an air cylinder, and the control of the air cylinder is relatively convenient, so that the thread cutting rod 32 is easy to control.

In this embodiment, the front part of the thread cutting rod 32 is tubular, and the end of the tubular part of the thread cutting rod 32 forms a beveled blade, and the sharp part of the beveled blade is close to the gun body 1. slipknot.

The chamfer blade is made by making the front end of the tubular thread cutting rod 32 into a chamfer, and then the chamfer is made into a chamfer blade. Therefore, the bevel blade is integrated with the thread cutting rod 32 instead of being separately or additionally provided. The sharp part of the beveled blade is close to the gun body 1, and the beveled blade is against the slipknot formed by the elastic thread 3. It is easier to cut off the elastic line 3 by making the blade into a beveled blade, and the sharp part of the beveled blade is close to the gun body 1. On the one hand, the beveled blade can be better stressed when cutting the elastic line 3, and on the other hand, this can be avoided. The sharp part will cause injury to the staff.

The wire take-up device includes a wire take-up drive device, a wire reel 7, a wire storage box 6, and a guide device 5 respectively arranged on the gun body 1, and the elastic wire 3 is connected with a flexible wire near one end of the gun body. In this embodiment, The flexible thread can use fishing thread or cotton thread or polyester thread 31 or other threads with less elasticity. Preferably, the flexible thread is made of polyester thread 31 , and the flexible thread hereinafter is represented by polyester thread 31 . Each polyester thread 31 is respectively wound on the guide device 5, and each polyester thread 31 is also respectively wound and arranged in the wire storage box 6 and passed through the wire storage box 6, and each polyester thread 31 is wound and arranged in the wire storage box 6. Not equal, the end of each polyester thread 31 close to the wire storage box 6 is also wound on the winding reel 7 respectively, and the winding reel 7 is connected with the wire take-up driving device in transmission. Since the lengths of each polyester thread 31 wound in the wire storage box 6 are not equal, when the take-up driving device drives the winding reel 7 to rotate and take up the line, each polyester thread 31 can be tightened in turn without interfering with each other. Influence, simple operation, simplified structure.

As a further improvement, the polyester thread 31 and the elastic thread 3 are connected through a terminal, the polyester thread 31 is not as elastic as the elastic thread 3 , and the polyester thread 31 is more suitable for taking up the thread than the elastic thread 3 . The elastic thread 3 and the polyester thread 31 are connected through a connection terminal, and the connection terminal is a structure such as a clip that can connect the two. Or the elastic thread 3 and the polyester thread 31 can also be connected by knotting.

As a further improvement, the wire storage box 6 includes a box body 61, and a plurality of wire storage pieces 62 are inserted in the box body 61. The number of the wire storage pieces 62 is equal to the number of the polyester threads 31, and each polyester thread 31 is wound on the corresponding on the wire storage piece 62. The inside of the box body 61 is a hollow structure, and a plurality of wire storage pieces 62 can be inserted sequentially. In this embodiment, the number of wire storage pieces 62 is four. The top and bottom of the box body 61 are respectively provided with a plurality of columns 63 , and the box body 61 is detachably fixed on the gun body 1 through the columns 63 . The wire storage piece 62 is provided with a card 621 , and the box body 61 is provided with a card hole 611 , and the wire storage piece 62 is fixedly connected inside the box body 61 through the cooperation of the card 621 and the card hole 611 .

As a further improvement, a first threading hole 622 is provided in the thread storage piece 62, and the two ends of the first threading hole 622 are respectively located on the two end surfaces of the thread storage piece 62, and one end of each polyester thread 31 close to the winding reel 7 passes through the corresponding The first threading hole 622 is wound on the winding reel 7 afterward. The first threading hole 622 has a guiding effect for the polyester thread 31. When the winding reel 7 rotates and takes up the thread, each polyester thread 31 is drawn up in the corresponding first threading hole 622 to prevent the polyester threads 31 from interfering with each other.

Further improved, the guiding device 5 includes rotating the rotating rod 51 that is located in the gun body 1, and the rotating rod 51 is provided with a plurality of guide wheels 52, the number of the guide wheels 52 is equal to the number of the polyester threads 31, and each polyester thread 31 is one One is wound on the corresponding guide wheel 52. The polyester thread 31 bypasses the guide wheel 52 and is wound on the thread storage sheet 62, which can prevent the polyester threads 31 from interfering with each other, and also make the polyester threads 31 shrink more conveniently and smoothly.

As a further improvement, a plurality of second threading holes 41 are provided along the axial direction of the gun head 4, the number of the second threading holes 41 is equal to the number of elastic lines 3, and each second threading hole 41 is distributed on the same side of the gun head 4, Each second threading hole 41 is distributed along the circumferential direction of the gun head 4, and the slipknot of each elastic thread 3 is set behind the gun head 4 and passes through the corresponding second threading hole 41 respectively; The diameter increases sequentially. The scheme disclosed in the patent document CN109124717A "an elastic thread ligation device with a thread cutting device" is that the elastic thread 3 is evenly distributed along the circumferential direction of the gun head 4, and in further improvement, Each elastic thread 3 is only distributed on one side of the gun head 4, the purpose of doing like this is to make the volume of the gun head 4 smaller. In order to adapt to the same side of the gun head 4 where the elastic line 3 is arranged, the diameters of the guide wheels 52 from the middle to both ends on the rotating rod 51 increase successively, that is, the diameter of the guide wheels 52 near the two ends of the rotating rod 51 is larger than that in the middle of the rotating rod 51 The guide wheel 52 diameter will be bigger.

Further improved, the winding reel 7 includes a winding rod 71, the winding rod 71 is rotated and installed on the gun body 1, the winding rod 71 is provided with a winding wheel 72, and a plurality of winding wheels 72 are arranged along the circumference of the winding wheel 72. Wire slots 73, the number of winding slots 73 is not less than the number of polyester threads 31, and the winding rod 71 is connected to the wire take-up driving device in transmission. Each polyester thread 31 is wound in the corresponding winding slot 73, and when the winding rod 71 rotates, each polyester thread 31 is shrunk simultaneously, but because the lengths of each polyester thread 31 winding in the wire storage box 6 are not equal, therefore, winding At different moments when the wire wheel 72 rotates, different elastic threads 3 are actually contracted, and the contraction of each elastic thread 3 does not affect each other.

Further improved, the take-up drive device includes a take-up drive 8 and a first gear 81, the take-up drive 8 is arranged on the gun body 1, the take-up drive 8 is provided with a second gear 82, and the first gear 81 is set On the winding rod 71, a first gear 81 and a second gear 82 mesh. The take-up driver 8 is a stepper motor, and the stepper motor is connected with a stepper motor controller and a power supply. The power of the take-up driving member 8 is transmitted to the winding rod 71 through the first gear 81 and the second gear 82 , so that the winding rod 71 takes up the wire under the rotation of the take-up driving member 8 . Power is transmitted through the first gear 81 and the second gear 82, which can transmit relatively large loads and have a long service life.

As a further improvement of the above-mentioned technical solution, a detection channel 43 is provided in the gun head 4 of this embodiment, and the detection channel 43 extends to the gun body 1. An anus lens barrel 9 is set on the gun head 4, and one end of the negative pressure tube 2 extends To the gun head 4 and communicate with the outside world, the other end of the negative pressure tube 2 is connected with the negative pressure device. When the elastic thread ligation device is used to treat the patient or before the treatment, it slides into the anus through the anus lens barrel 9. On the one hand, it is to facilitate the operation, and on the other hand, the patient's affected part can be observed and monitored through the detection channel 43 combined with the anus lens barrel 9. detection. Therefore, compared with the existing ligation device, the ligation device disclosed in this embodiment also has a detection function. In order to save space and prevent the negative pressure tube 2 from interfering with the detection channel 43 , the negative pressure tube 2 is led out from the gun head 4 , and then extends from the outside to the rear end of the gun body 1 .

Further preferably, a detection element is inserted in the detection channel 43 , and the detection element is a tool similar to a camera, capable of detecting the condition of the patient's affected part. Specifically, the detection element is an endoscope.

Further preferably, the front end of the anus lens barrel 9 is inclined, so that the contact surface between the gun head 4 and the intestinal wall is larger during the operation, so that it is more convenient to suck the tissue during the ligation operation.

Further preferably, the angle between the inclined plane and the surface of the anus lens barrel 9 is 12° to 25°, preferably, the angle is 15°.

Further preferably, the diameter of the front end of the anus lens barrel 9 is smaller than the diameter of the rear end of the anus lens barrel 9, the front end of the anus lens barrel 9 is an end close to the end of the gun head 4, and the rear end of the anus lens barrel 9 is an end close to the rear end of the gun body 1, This is for the convenience of sliding the gun head 4 with the anus lens barrel 9 into the anus.

Further preferably, a buckle-type fixing device is provided between the anus lens barrel 9 and the gun head 4, and the disassembly and assembly between the anus lens barrel 9 and the gun head 4 is more convenient through the buckle-type fixing device.

Further preferably, the buckle-type fixing device includes a clamping strip 91 and a clamping seat 92, the clamping strip 91 is arranged on the outer wall of the gun head 4, the clamping strip 91 is arranged axially along the gun head 4, and the clamping seat 92 includes two parallel splints, two The splint is arranged on the inner wall of the anus lens barrel 9 , and the two splints are arranged axially along the anus lens barrel 9 , and the two splints form a snap fit with the clip strip 91 . When the anus lens barrel 9 is set on the gun head 4, the two splints are stuck on the clip 91, so that the connection between the anus lens barrel 9 and the gun head 4 is more firm.

Further preferably, concave holes 93 are respectively provided on opposite sides of the two splints, and protrusions 94 that cooperate with the concave holes 93 are respectively provided on both sides of the clip bar 91 . Through the cooperation between the concave hole 93 and the protrusion 94, the connection between the anus lens barrel 9 and the gun head 4 is more firm.

Further preferably, there are multiple buckle-type fixing devices, and each buckle-type fixing device is distributed along the circumferential direction of the outer wall of the gun head 4 and the inner wall of the anus lens barrel 9 . Preferably, the number of snap-in fixing devices is four, and the four snap-in fixing devices are evenly distributed along the circumferential direction of the outer wall of the gun head 4 and the inner wall of the anus lens barrel 9, so that there is a gap between the anus lens barrel 9 and the gun head 4. connection is stronger.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Under the conception of the present invention, the equivalent structural transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly/indirectly used in Other relevant technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. a kind of elastic thread looping and binding device of single driving trimming, which is characterized in that including gun body, the gun body is equipped at least one Retractable driving device, negative tube and Duo Gen elastic thread；

One end of the elastic thread is set in the pipette tips of gun body in the form of slip-knot, and the other end of the elastic thread and take-up fill Set connected, the take-up is located in gun body；

One end of the negative tube extends to pipette tips and is in communication with the outside, and the other end of the negative tube is connected with negative pressure device；

Tangent line bar is movably equipped in the gun body, the front end of the tangent line bar forms blade, and the blade is linear to elastic force is located at At slip-knot at, the quantity of the tangent line bar and the quantity of elastic thread are equal, the corresponding tangent line bar of every elastic thread, described to cut The rear end of line bar is opposite with retractable driving device output end, and each retractable driving device corresponds to more tangent line bars, corresponds to same stretch The rear end of each tangent line bar of contracting driving device and the distance between the retractable driving device output end are each unequal.

2. the elastic thread looping and binding device of single driving trimming according to claim 1, which is characterized in that the retractable driving device Output end be equipped with pushing plate, the plate face of the pushing plate is opposite with the rear end of corresponding each tangent line bar, the same pushing plate of correspondence Each tangent line bar rear end and the distance between the plate face of the pushing plate it is each unequal.

3. the elastic thread looping and binding device of the driving trimming of the list according to claim, which is characterized in that the retractable driving device It is electrical connected respectively including flexible actuator and first switch, the flexible actuator with first switch, power-supply device, described the One switch is located in gun body.

4. the elastic thread looping and binding device of the driving trimming of the list according to claim, which is characterized in that the flexible actuator is Linear motor.

5. the elastic thread looping and binding device of the driving trimming of the list according to claim, which is characterized in that the flexible actuator is Hydraulic cylinder.

6. the elastic thread looping and binding device of the driving trimming of the list according to claim, which is characterized in that the flexible actuator is Cylinder.

7. the elastic thread looping and binding device of single driving trimming according to any one of claims 1 to 6, which is characterized in that described to cut Line bar front is tubulose, and the end of the tangent line bar tubular portion forms scarf blade, the sharp portion of the scarf blade Close to gun body, the scarf blade is supported at the slip-knot for being located at elastic thread formation.

8. the elastic thread looping and binding device of single driving trimming according to any one of claims 1 to 6, which is characterized in that the receipts Line apparatus includes the take-up driving device being respectively provided in gun body, wire spool, Thread holder, guiding device, and the elastic thread is close One end of gun body is connected with flexible wires, and each flexible wires are wound around on guiding device respectively, and each flexible wires also curl setting storage line respectively In box and Thread holder is passed through, the length that each flexible wires winding is arranged in Thread holder is each unequal, and each flexible wires are close to Thread holder One end be also respectively wound around on wire spool, the transmission of the wire spool and take-up driving device is connected.

9. the elastic thread looping and binding device of single driving trimming according to claim 8, which is characterized in that the Thread holder includes box Body is inserted with muti-piece storage line piece in the box body, and the quantity of the storage line piece and the quantity of flexible wires are equal, and each flexible wires are one by one It is wrapped in corresponding storage line on piece.

10. the elastic thread looping and binding device of single driving trimming according to claim 9, which is characterized in that set in the storage line piece There is the first threading hole, the both ends of first threading hole are located at the both ends of the surface of storage line piece, and each flexible wires are close to wire spool One end is wrapped on wire spool after passing through the first threading hole.