CN109223115B - An elastic thread ligation device - Google Patents

Abstract

The invention provides an elastic thread ligation device, which includes a gun head and a gun body, a rotating device is provided at the joint between the gun head and the gun body, and the gun head includes a gun head casing, a gun barrel and an elastic wire tube arranged on the gun barrel The launching device, the elastic line tube launching device includes at least one elastic line tube and the corresponding elastic line tube launching device button, the elastic line tube plug and the slot, and also includes at least one elastic line, one end of the elastic line is connected to the corresponding elastic line The tubes are connected, and the other end passes through the threading hole on the sleeve of the gun head, and an elastic thread loop is formed in the form of a slipknot to be sleeved on the sleeve of the gun head in reverse. Press the button of the elastic wire tube launching device, the elastic wire tube will fall off from the slot, pull the elastic wire tube to move the elastic wire loop forward until it breaks away from the sleeve of the gun head, pull the elastic wire in the opposite direction to make the loop hole at the front end of the elastic wire zoom out. The elastic thread ligation device provided by the invention has the advantages of simple structure, convenient operation and better effect.

Description

An elastic thread ligation device

technical field

The invention relates to the technical field of medical devices, in particular to an elastic thread ligation device.

Background technique

"Hemorrhoid ligation (also known as hemorrhoid rubber ring ligation, hemorrhoid suction ligation, etc.)" is a common method for the treatment of hemorrhoids. ) bandage at the root (or base) of the internal hemorrhoid, thereby using the elastic retraction force of the rubber ring to block the blood supply of the hemorrhoid, making it necrotic, shrinking, and falling off, so as to achieve the purpose of healing. The traditional instruments used to perform ligation in the past are extremely crude, time-consuming, labor-intensive, and prone to complications. In order to change this situation, in the past ten years, there has been an automatic device that makes the ligation operation simple and easy, that is, the automatic hemorrhoid ligation device (also known as the continuous-fire hemorrhoid ligation device, the continuous-fire hemorrhoid ligation device, and the continuous-fire hemorrhoid ligation device). wait). The advantages of using this device for ligation surgery are: simple, fast, and accurate operation; it takes only 5 to 10 minutes; the probability of complications is low; patients generally do not need anesthesia, and the pain is mild; most patients do not need to be hospitalized. Treatment is inexpensive.

CN102727275B discloses a hemorrhoid ligation device, which solves the troublesome operation of the existing ligation device, the long operation time, and the technical deficiency that the elastic rubber ring cannot be uniformly ligated on the root of the hemorrhoid. The adopted scheme is to include: the hemorrhoid ligation part And the hemorrhoid ligation control part, the hemorrhoid ligation control part includes: the hand-held ligation device housing, the suction piston control slide, the speed change and reversing gear, the suction piston control trigger, the ligation rubber ring pusher control slide and ligation The rubber pusher controls the trigger. The suction piston controls the trigger through the gear transmission to control the suction piston, and the rubber ring pusher controls the trigger through the gear transmission to control the rubber ring pusher to realize the ligation of the rubber ring to ligate the root of the hemorrhoid. The ligation device in the reference document has a simple structure, is fast and convenient, and has an accurate ligation position.

CN201230887Y discloses a continuous-fire hemorrhoid sucker, which includes a body, a tube body arranged at the front end of the body, and a plurality of stretched rubber rings that are sequentially placed on the tube body, placed behind the tube body and connected to the tube body. The negative pressure suction joint connected to the inner cavity, the rubber ring ejection device arranged on the body, the front end of the tube body is covered with a launcher connected to the inner cavity of the tube, and the rubber ring is set on the launcher; the rubber ring ejection device It includes at least one pulling wire and a winding device arranged in the body, the front end of the pulling wire is wound on the winding device, the tail end of the pulling wire passes through the body and is folded back through the nozzle of the launching head, and It is connected with the rubber ring along the outer wall of the emitting head through a traction mechanism.

The hemorrhoid suction ligation device disclosed in the above-mentioned literature (also known as the hemorrhoid ligation device) and other types of hemorrhoid ligation devices at home and abroad have a common feature, that is, they mostly use "rubber rings" as a ligation device for the hemorrhoid root. The basic material; and the raw materials that can be used to make the apron include natural rubber, latex or silica gel.

The clinical efficacy of hemorrhoid rubber ring ligation is directly related to the two technical indicators of "the inner diameter of the rubber ring" and "the elastic retraction force of the rubber ring". The use of aprons as ligation materials has some inherent disadvantages: ① Due to the inherent characteristics of natural rubber (or latex, silica gel, etc.), the inner diameter of the apron cannot be infinitely small, and generally can only be made into 2.0-2.5mm ( At least not less than 1.5mm), otherwise the ligation is easily broken when stretched. This means that within the size range of 2.0 to 2.5 mm in diameter (at least not less than 1.5 mm), the bandaged hemorrhoid tissue will not be affected by any elastic retraction force, and the ulcer formed after the final tissue necrosis and detachment is also within 2.0 mm. ~2.5mm (at least not less than 1.5mm); ②When the rubber ring is installed on the ligation device in a stretched state, it is prone to fatigue gradually and the inner hole diameter becomes larger as time goes on; ③Affected by climate, environment, etc. Affected by various factors, the rubber ring is prone to aging over time, thus weakening the elastic recoil force.

Due to the influence of the above factors, it may lead to the following consequences: ① slippage of the rubber ring in a short period of time after the operation, resulting in failure of treatment; 5%); ③ incomplete necrosis of hemorrhoids, delayed healing of the ulcer surface, affecting the curative effect.

Aiming at the problems of the rubber ring as the ligation material, there are also literatures disclosing elastic thread ligation devices using elastic thread as the ligation material:

CN203988202U discloses a kind of automatic elastic line ligation device, comprises gun barrel, gun body and pulling wire, and pulling wire passes through gun barrel and its rear end is positioned in gun body, and the front end of pulling wire stretches out gun barrel and folds back on On the outer wall of the gun barrel front end; also include at least one elastic line, the elastic line is arranged along the outer wall of the gun barrel, the front end of the elastic line forms an adjustable ring sleeve on the outer wall of the gun barrel front end, the ring sleeve and the pulling line The front ends are connected; pull the traction line backwards, and the traction line drives the ring to move to the nozzle of the barrel until it comes out of the nozzle; push forward against the force of the front end of the elastic line, and pull the tail end of the elastic line backward at the same time , these two forces resist the traction so that the aperture of the collar shrinks gradually.

Although the automatic elastic thread ligation device disclosed in the above-mentioned comparative document uses elastic thread as the ligation material, it also solves a series of treatment problems caused by using rubber rings as the ligation material in the past, but there are still the following deficiencies:

1. During the operation of the automatic elastic thread ligation device disclosed in this reference document, it is necessary to hold the ligation device with one hand, hold the force point with one hand, and pull the elastic thread with the other hand to reduce the inner diameter of the ring; at least two people are required to complete the operation. The operation is troublesome and the work efficiency is low.

2. Although the automatic elastic thread ligation device disclosed in this reference document can be equipped with at least one elastic thread at the same time for multiple surgical operations, the ring sleeve is driven by the traction line to move to the mouth of the barrel until it reaches the mouth of the barrel. In the process of prolapse, it is easy to launch two or more rings at the same time, and the misoperation rate is high, which causes waste in the operation process and increases the operation cost.

3. The automatic elastic thread ligation device disclosed in this reference document needs to set a traction line during the operation and use, and each time a loop is launched, the traction line needs to be set once, which is very troublesome to operate.

Therefore, it is of great significance to develop an elastic thread ligation device with simple structure and convenient operation that can be operated by a single person and accurately, for improving the success and convenience of the ligation operation. In view of the above problems, the inventors respectively disclosed two elastic thread ligation devices with different structures and elastic thread setting methods in the published patent documents CN201510929952.6 and CN 201510713422.8. The present invention intends to further improve on this basis and provide a An elastic thread ligation device with more convenient operation and better effect.

Contents of the invention

The technical problem solved by the present invention is to provide an elastic thread ligation device with simple structure, convenient operation and better effect.

In order to achieve the above purpose, the adopted technical scheme is as follows:

An elastic thread ligation device, comprising a gun head and a gun body, the gun head and the gun body are rotatably connected;

The gun head includes a gun head casing, a gun barrel and an elastic wire tube launching device;

The gun head sleeve is a hollow sleeve structure, and the gun head sleeve is provided with a threading hole; the gun head sleeve is fixedly sleeved on the front end of the gun barrel;

The elastic line tube launching device is arranged on the gun barrel, and the elastic line tube launching device includes at least one elastic line tube and a corresponding elastic line tube launching device button, an elastic line tube plug and a slot;

The elastic line launching device also includes at least one elastic line arranged along the outer wall of the gun head, one end of the elastic line is connected with the corresponding elastic line tube, the elastic line tube is fixed on the draw-in slot, and the other end of the elastic line Pass through the threading hole on the gun head sleeve, and the elastic line forms a loop of elastic wire in the form of a slipknot, which is reversely sleeved on the gun head sleeve;

Press the button of the elastic wire tube launching device, the elastic wire tube corresponding to the button of the elastic wire tube launching device will fall off from the slot, pull the elastic wire tube to move the elastic wire ring forward until it breaks away from the sleeve of the gun head, reverse Pull the elastic thread to reduce the diameter of the loop hole at the front end of the elastic thread.

Further, a cylindrical slideway is provided on the gun tip sleeve.

Further, the inner hole of the gun tip sleeve is oval.

Further, a rotating device is provided at the connection between the gun head and the gun body, and the rotating device makes the rotation angle between the gun head sleeve and the gun barrel range from 0° to 360°.

Further, a negative pressure tube is provided in the gun body, the front end of the negative pressure tube is connected to the gun barrel, and the end of the negative pressure tube is provided with a negative pressure joint, and the gun barrel and the negative pressure tube are in the elastic thread ligation device. Create a negative pressure line.

Further, the negative pressure tube and the gun barrel are sealed and inserted through the sealing insert.

Further, the negative pressure tube is composed of a negative pressure tube 1, a hose and a negative pressure tube 2 which are sequentially sealed and connected.

Further, the negative pressure tube 1 is provided with a negative pressure switch that can move back and forth, the connection between the negative pressure switch and negative pressure tube 1 is provided with a sealing ring, and the end of the negative pressure switch is provided with a switch plug .

Further, the button of the elastic tube launching device is marked with a mark for identifying the elastic line, and the position of the mark corresponds to the position of the elastic line tube.

Further, the elastic thread is composed of a mesh braided layer wrapped around the elastic strip, both of which are made of polymer materials, and the mesh braided layer stretches when the elastic strip is stretched.

Said scheme of the present invention has following beneficial effect:

1. The connection mode of the gun head and the gun body of the elastic thread ligation device provided by the present invention is changed from the original buckle connection to the rotary locking connection. During operation, the right hand holds the gun body, and the left hand rotates the rotating device to make the gun The body remains still, and the gun head rotates 0-360° until the ideal surgical angle is found, which is easy to operate and has good surgical effect.

2. The elastic thread ligation device provided by the present invention is provided with an elastic thread tube launching device. When setting the elastic line, press the button of the elastic line tube launching device (the button marks respectively correspond to the elastic line tubes on the card slot, which one needs to be used) Press the corresponding identification button), the corresponding elastic line tube will fall off from the slot, pull the elastic line tube to move the elastic line loop forward until it is detached from the sleeve of the gun head, then pull the elastic line in the opposite direction to make the loop at the front end of the elastic line The hole diameter of the sleeve is reduced, the structure is simple, and the operation is convenient.

3. The negative pressure switch of the elastic thread ligation device of the present invention can move back and forth, so that the negative pressure pipeline can be opened or closed, so as to realize the deflated or inhaled state during the operation, and the operation is convenient.

4. A cylindrical slideway is newly added to the gun head sleeve of the elastic thread ligation device of the present invention, which solves the stuck problem of the elastic thread.

5. The inner hole of the gun tip casing of the elastic thread ligation device of the present invention is changed from the original circular shape to an oval shape, which greatly improves the lateral attraction of the gun tip sleeve port to the target tissue at the same negative pressure value, and is easy to operate and has a good effect. better.

Description of drawings

Fig. 1 is a schematic diagram of the split structure of the present invention.

Fig. 2 is a schematic diagram of the overall structure of the present invention.

Figure 3 is a top view of the present invention.

Fig. 4 is a bottom view of the present invention.

Fig. 5 is a schematic diagram of the structure of the gun tip sleeve of the present invention.

Fig. 6 is the first diagram of the structure of the negative pressure switch of the present invention.

Fig. 7 is the second diagram of the structure of the negative pressure switch of the present invention.

Fig. 8 is a schematic diagram of the position of the negative pressure switch before the operation.

Fig. 9 is a schematic diagram of the position of the negative pressure switch during the operation.

Fig. 10 is a schematic diagram of the position of the negative pressure switch after the operation.

Explanation of reference signs: 1. gun head casing; 101. slideway; 2. elastic wire tube; 3. elastic wire tube plug; 4. elastic wire tube launching device button; 5. card slot; 6. logo; 7. Gun barrel; 8, negative pressure tube one; 9, rotating device; 10, negative pressure switch; 11, sealing ring; 12, switch plug; 13, screw; 14, gun body; 15, hose; 16, negative pressure tube two.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

Example

As shown in Figure 1, a kind of elastic cord ligation device of the present embodiment comprises gun head and gun body 14, and the joint of gun head and gun body 14 is provided with rotating device 9, and the gun head is connected with gun body 14 through rotating device 9. Twist and lock connection. The gun head comprises a gun head casing 1, a gun barrel 7 and an elastic wire tube launching device. When rotating the rotating device 9, the gun body 14 can be kept still, while the gun head sleeve 1, the gun barrel 7 and the rotating device 9 rotate 0-360° together until an ideal operation angle is found, and the operation is very convenient.

The gun tip casing 1 is hollow, and is provided with a threading hole, and the outer side of the pipe wall is also provided with a groove, which corresponds to the protrusion at the front end of the gun barrel 7, so that the fixed socket of the gun tip sleeve 1 and the gun barrel 7 is realized.

The barrel 1 of the gun head is provided with a cylindrical slideway, which can effectively solve the problem of the sticky launch of the elastic thread and make the operation smoother. The inner hole of the cannula of the gun tip is set in an oval shape, thereby greatly improving the lateral attraction of the cannula port of the gun tip to the target tissue at the same negative pressure value, so that the operation effect is better.

As shown in FIG. 1 and FIG. 4 , the elastic wire tube launching device is arranged on the gun barrel 7 , which includes at least one elastic wire tube 2 , an elastic wire tube launching device button 4 , an elastic wire tube plug 3 and a slot 5 . One end of the elastic wire tube is tightly sleeved with the elastic wire tube plug 3 and fixed in the draw-in groove 5 . The elastic line tube launching device button 4 is marked with a mark 6, and the position of the mark corresponds to the position of the elastic line tube, and is used for marking the elastic line. When setting the elastic thread, which elastic thread is needed, just press the mark corresponding to the elastic thread, which is easy to operate.

The elastic thread launching device also includes at least one elastic thread arranged along the outer wall of the gun head of the ligation device, one end of the elastic thread is connected with the elastic thread tube 2, and the elastic line tube 2 is fixed on the draw-in groove 5, and the other end of the elastic thread Through the threading hole on the gun head sleeve 1, the elastic thread forms a loop of elastic wire in the form of a slipknot and is reversely sleeved on the gun head sleeve 1.

When the elastic line needs to be set, press the elastic line tube launcher button 4, the elastic line tube 2 corresponding to the elastic line tube launcher button 4 falls off from the slot, hold the ligator by hand, and the ligator gun Keep the head still, pull the elastic wire tube 2, and through the pulling force of the elastic wire, the elastic wire loop will move forward until it breaks away from the sleeve 1 of the gun head. Then pull the elastic thread in the opposite direction to reduce the hole diameter of the ring sleeve at the front end of the elastic thread, which is easy to operate.

The gun body 14 is provided with a negative pressure tube, and the front end of the negative pressure tube is sealed and plugged into the gun barrel 7 through a sealing connector. seat composition. The negative pressure pipe is composed of negative pressure pipe one 8, flexible pipe 15 and negative pressure pipe two 16 which are connected in sequence. The end of negative pressure pipe two 16 is connected with negative pressure connector.

Negative pressure tube 1-8 is provided with negative pressure switch 10 that can move back and forth, the junction of negative pressure switch 10 and negative pressure tube-8 is provided with sealing ring 11, and the end of negative pressure switch 10 is provided with switch plug 12.

The negative pressure switch 10 can move back and forth, and the three positions of the negative pressure switch 10 respectively correspond to the position before the operation in FIG. 8 , the position during the operation in FIG. 9 , and the position after the operation in FIG. 10 . The negative pressure switch 10 can make the negative pressure pipeline realize the state of opening or closing, so as to realize the state of deflating or inhaling during the operation, and the structure is simple and the operation is convenient.

The elastic thread is composed of a net-like braided layer wrapped around the elastic strip, both of which are made of polymer materials, and the net-like braided layer stretches when the elastic strip is stretched.

Taking this embodiment as a medical device as an example, its working process is as follows:

1. Connect the negative pressure connector to the negative pressure suction system, and move the negative pressure switch 10 to seal the negative pressure pipeline;

2. Hold the handle of the gun body 14 with your hand, align the port of the gun head sleeve 1 with the hemorrhoid tissue (or other tissues), turn on the negative pressure suction system, and the hemorrhoid tissue is sucked into the gun head sleeve 1;

3. Press an ideal button on the button 4 of the elastic wire tube launching device, let the corresponding elastic wire tube 2 fall off from the slot, hold the ligator with your hands, hold the gun head of the ligator, and pull the elastic The wire tube 2, through the pulling force of the elastic wire, moves the elastic wire loop forward until it breaks away from the sleeve 1 of the gun head of the ligation device;

4. Continue to use the gun head of the ligation device against the surgical site and the force point of the ring, and pull the elastic thread backward at the same time. Cut the elastic cord.

5. Move the negative pressure switch 10 forward to open the negative pressure pipeline, release the negative pressure, and complete a ligation operation.

After the procedure, the ligature is left on the hemorrhoidal tissue until the hemorrhoidal tissue falls off.

For ligation of hemorrhoid tissue at different angles, you can hold the handle of the gun with your right hand, and turn the rotating device with your left hand, so that the barrel of the gun head and the rotating device can rotate together to the ideal surgical angle (360°rotatable), while the gun handle remains still. The ligation of the lower tissue is carried out according to the above method, and one gun tip of this embodiment can be ligated four times continuously.

It is convenient to use the elastic thread ligation device of this embodiment to ligate the target tissue. The numbers 1, 2, 3, and 4 on the button 4 of the elastic thread tube 2 respectively correspond to the elastic thread tube 2 on the card slot. Which one is needed? Just select the elastic wire tube launching device button 4 corresponding to the number, which is easy to operate and improves work efficiency.

A cylindrical slideway is newly added to the sleeve of the gun head of the elastic thread ligation device in this embodiment, which solves the stuck problem of the elastic thread and improves the success rate of the operation.

The inner hole of the gun tip casing of the elastic thread ligation device in this embodiment is changed from the original circular shape to an oval shape, which greatly improves the lateral attraction of the gun tip sleeve port to the target tissue at the same negative pressure value, and the effect is better.

In this embodiment, by moving the negative pressure switch 10, the negative pressure pipeline is opened or closed, so as to achieve the state of deflating or inhaling air during the operation, with simple structure and convenient operation.

The gun head casing 1 and the gun barrel 7 of the elastic thread ligation device of this embodiment can realize 0-360° rotation relative to the gun body 14, realizing accurate fastening and ligation of hemorrhoid tissue. When the hemorrhoid tissue falls off, the wound surface is extremely small, which reduces the chance of complications and bleeding after hemorrhoid ligation, and also avoids other disadvantages of the previous rubber band ligation.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (9)

1. An elastic cord ligation device, comprising a gun head and a gun body, characterized in that: The connection between the gun head and the gun body is provided with a rotating device, and the rotating device makes the rotation angle of the gun head casing and the gun barrel relative to the gun body 0-360°. During the rotation of the gun head sleeve and the rotating device, the gun body remains still The gun head includes a gun head casing, a gun barrel and an elastic wire tube launching device; The gun tip sleeve is a hollow sleeve structure, and the gun tip sleeve is provided with a threading hole; the outside of the pipe wall of the gun tip sleeve is provided with a groove, and the front end of the gun barrel is provided with a groove corresponding to the groove. Protrusion, the gun head casing is fixedly sleeved on the front end of the gun barrel through the groove and the protrusion; The elastic line tube launching device is arranged on the gun barrel, and the elastic line tube launching device includes at least one elastic line tube and a corresponding elastic line tube launching device button, an elastic line tube plug and a slot; The elastic line launching device also includes at least one elastic line arranged along the outer wall of the gun head, one end of the elastic line is connected with the corresponding elastic line tube, the elastic line tube is fixed on the draw-in slot, and the other end of the elastic line Pass through the threading hole on the gun head sleeve, and the elastic line forms a loop of elastic wire in the form of a slipknot, which is reversely sleeved on the gun head sleeve; Press the button of the elastic wire tube launching device, the elastic wire tube corresponding to the button of the elastic wire tube launching device will fall off from the slot, pull the elastic wire tube to move the elastic wire ring forward until it breaks away from the sleeve of the gun head, reverse Pull the elastic thread to reduce the diameter of the loop hole at the front end of the elastic thread. 2 . The elastic thread ligation device according to claim 1 , wherein a cylindrical slideway is arranged on the gun tip sleeve. 3 . 3. The elastic thread ligation device according to claim 1, characterized in that, the inner hole of the gun tip sleeve is oval. 4. Elastic thread ligation device as claimed in claim 1, wherein a negative pressure tube is provided in the gun body, the front end of the negative pressure tube is connected to the gun barrel, and the end of the negative pressure tube is provided with a negative pressure joint, and the The gun barrel and the negative pressure tube form a negative pressure pipeline in the elastic thread ligation device. 5 . The elastic thread ligation device according to claim 4 , wherein the negative pressure tube and the gun barrel are sealed and inserted through a sealing insert. 6 . 6 . The elastic thread ligation device according to claim 4 , wherein the negative pressure tube is composed of a negative pressure tube 1 , a hose and a negative pressure tube 2 which are sequentially sealed and connected. 7 . 7. Elastic thread ligation device as claimed in claim 6, characterized in that, said negative pressure tube one is provided with a negative pressure switch which can move back and forth, and the connection between said negative pressure switch and negative pressure tube one is provided with A sealing ring, the end of the negative pressure switch is provided with a switch plug. 8 . The elastic thread ligation device according to claim 1 , wherein the button of the elastic thread tube launching device is marked with a mark for identifying the elastic thread, and the position of the mark corresponds to the position of the elastic thread tube. 9. Elastic thread ligation device as claimed in claim 1, characterized in that, said elastic thread is made of mesh braided layer wrapping elastic strips, both of which are made of polymer materials, and said mesh braided layer wraps elastic strips Stretch and stretch.