CN210521005U - Collector for removing polyp by gastrointestinal endoscope - Google Patents

Abstract

The utility model relates to a gastroenteroscope excision polyp collector, at least including the first catheter that is used for the drainage, a second bottle that is used for collecting the first bottle of polyp and is used for collecting the waste liquid, be provided with in the first bottle with first bottle inner wall sliding connection's support, wherein, exert exogenic action and make its relative first bottle along the condition that the first direction removed to the support under, first drain pipe is through first bottle and the inside intercommunication of second bottle, the first direction be with the support body looks vertically direction of support. The utility model discloses a set up the relation of the alternative intercommunication between first catheter, the first bottle is inside, second catheter and the second bottle, the user only needs from this to obtain the meat sample through the spiral cover after the imbibition finishes through the first body of rod of push-and-pull in the relative position of first bottle to take out once and can carry out the collection and the collection of secondary meat sample, convenient to use person continuous operation after the meat sample.

Description

Collector for removing polyp by gastrointestinal endoscope

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a gastroenteroscope excision polyp collector.

Background

Gastric polyps are prominent papillary tissues growing from the surface of the gastric mucosa, are small, often have no obvious symptoms, and are usually discovered accidentally during gastrointestinal barium meal radiography, gastroscopy or other-reason operations. The term "polyp" generally refers only to a protrusion observed with the naked eye. Gastric polyps are papillary polyps that grow proud of the surface of the gastric mucosa. Small hyperplastic or inflammatory polyps, which may be left untreated due to their non-cancerous potential, are treated by microwave or radio frequency if the patient so requires. For larger polyps and those with histologically confirmed adenomatous polyps, surgical removal is performed once found to avoid bleeding, obstruction or canceration of the polyps. Patients with gastrointestinal polyps need tumor-rectification and taking out for pathological biopsy after the polyps are resected by high-frequency electric loop extraction under a gastroscope or an enteroscope.

Usually, the endoscope main machine is connected with an aspirator, and when the gastrointestinal endoscope is operated, water and mucus in the cavity enter the aspirator through a suction hole channel. When the polyp is removed, the gastrointestinal endoscope is taken out through a special object grasping forceps or is sucked on the mirror surface through negative pressure and exits along with the gastrointestinal endoscope; the partially cut polyp slides into the intestinal cavity and is difficult to grasp, a doctor gives up grasping, and the patient is required to pay attention to discharge the polyp out of the body along with the excrement and then send for biopsy; and part of small polyps are easy to be sucked into the recovery bottle by mistake through negative pressure after being cut off and cannot be separated for inspection. For polyposis, the polyp is cut under a gastrointestinal endoscope, the polyp needs to be grabbed and withdrawn from the endoscope, the endoscope is put in again, a second polyp is searched, the polyp is cut off again, and the polyp is put in and taken out repeatedly, so that the patient suffers pain, the operation is delayed, and much inconvenience is caused.

The gastroenteroscope extirpation polyp collector of chinese patent (publication number is CN203483457U), including attracting the person in charge and retrieving the bottle, attract person in charge one end and connect the interface that the gastroenteroscope host computer attracts the pipe, the other end is connected and is retrieved the bottle, it still is connected with the air duct to retrieve the bottle, a serial communication port, attract person in charge to connect and be provided with the branch of attraction that the bypass shunted, the entrance point that attracts the branch is provided with the three way valve, the exit end that attracts the branch is provided with the filter screen. The polyp collector for removing the polyp through the gastrointestinal endoscope is simple in structure, low in manufacturing cost, convenient to use and install, capable of rapidly taking out the polyp, short in whole operation time, free of repeatedly inserting and pulling the endoscope, capable of effectively relieving pain of a patient, capable of guaranteeing integrity of a polyp specimen and free of influence on operation of removing the polyp.

Because gather the polyp through setting up the suction branch pipe among the gastroenteroscope excision polyp collector that this patent provided, nevertheless need dismantle when gathering the polyp and attract the branch pipe and extract whole filter screen again and carry out the secondary and shift to the polyp, could reach the pathology biopsy to the sample, under the condition of needing many times to gather the polyp sample in succession, dismantle repeatedly and attract the branch pipe, the operation process is complicated and time-consuming, and at the in-process that the filter screen that will carry residual liquid draws out, lead to medical operation environment contaminated or be infected with to operator's hand easily, the work burden that has increased the operator has just influenced operator's work efficiency.

Moreover, on the one hand, since the skilled person in the art who is understood by the applicant is necessarily different from the examination department; on the other hand, since the inventor made the present invention while studying a large number of documents and patents, the disclosure should not be limited to the details and contents listed in the specification, but the present invention should not have the features of the prior art, but the present invention should have the features of the prior art, and the applicant reserves the right to increase the related art in the background art at any time according to the related specification of the examination guideline.

SUMMERY OF THE UTILITY MODEL

To the deficiency of the prior art, the utility model provides a gastroenteroscope extirpation polyp collector, at least including the first catheter that is used for the drainage, be used for collecting the polyp first bottle and be used for collecting the second bottle of waste liquid, be provided with in the first bottle be used for filtering the waste liquid and with first bottle inner wall sliding connection's support, wherein, right the support is applyed exogenic action and is made it relative under the condition that first bottle removed along the first direction, first catheter passes through first bottle with the inside intercommunication of second bottle, first direction be with the support body looks vertically direction of support.

According to a preferred embodiment, the polyp collector further comprises a first ball valve disposed between the first liquid guide tube and the second bottle body, and a second ball valve disposed between the first liquid guide tube and the first bottle body, wherein, when the holder moves relative to the first bottle body along a first direction so that the first ball valve is closed and the second ball valve is opened, the first liquid guide tube is disconnected from the second bottle body and the first liquid guide tube is communicated with the first bottle body.

According to a preferred embodiment, the polyp collector further comprises a first rod slidably connected to the inner wall of the first body and having one end fixedly connected to the support, and a second catheter having two ends respectively communicating with the inside of the first body and the inside of the second body, wherein the first body can be connected or disconnected with the second body through the second catheter in a manner that the first rod moves relative to the first body along a first direction.

According to a preferred embodiment, the first rod is fixedly connected with at least one fastening member, and when the first rod moves along a first direction relative to the first bottle body, the fastening member is in contact with or separated from an end surface of the second catheter, which is in an open state and is arranged on the inner wall of the first bottle body.

According to a preferred embodiment, the inner wall of the first bottle body is provided with a third through hole for taking out polyps, two ends of the third through hole are respectively communicated with the inside of the first bottle body and the outside of the first bottle body, and an included angle between the through hole penetrating direction of the third through hole and the first direction is an acute angle.

According to a preferred embodiment, at least one stop for moving a polyp is arranged on the holder in a fixed manner.

According to a preferred embodiment, the bracket is located above or below the third through hole in such a manner that the first rod moves in a first direction with respect to the first bottle.

According to a preferred embodiment, the outer wall of the third through hole is provided with a fourth through hole which is used for leading out waste liquid in the third through hole, and two ends of the fourth through hole are respectively communicated with the third through hole and the inner part of the first bottle body.

According to a preferred embodiment, a first hollow inner cavity and a second rod body movably connected to the inner wall of the first hollow inner cavity are arranged in the inner wall of the first bottle body, and the second rod body can move along a first direction relative to the first bottle body in a manner that one end of the second rod body is located above the support and abuts against the support.

According to a preferred embodiment, one end of the second rod body is rotatably connected to the first protruding shaft disposed on the first ball valve and the second protruding shaft disposed on the second ball valve, respectively.

The utility model provides a gastroenteroscopy excision polyp collector has following advantage at least:

the utility model discloses a set up the relation of the alternative intercommunication each other of first catheter, first bottle inside, second catheter and second bottle, the user only needs from this to obtain the meat sample of breathing through the spiral cover after the imbibition finishes through the relative position of the first body of rod of push-and-pull in first bottle to take out once and breath the collection and the collection of meat sample of breathing twice, convenient to use person continuous operation after the meat sample of breathing. Furthermore the utility model provides a filter has bigger filter area, can increase the filtration efficiency of the solid-liquid mixture of collecting.

Drawings

FIG. 1 is a simplified cross-sectional schematic view of a preferred embodiment of the collector provided by the present invention;

FIG. 2 is a simplified cross-sectional schematic view of a preferred second rod of the present invention; and

fig. 3 is a simplified side view of a fifth preferred rod of the present invention.

List of reference numerals

1: first body 2: second rod 3: a first hollow inner cavity

4: a limiting block 5: and (6) a bracket: spring

7: first ball valve 8: the first liquid guide tube 9: first protruding shaft

10: fifth through hole 11: first through hole 12: sixth through hole

13: second protruding shaft 14: second hollow inner cavity 15: second ball valve

16: second through hole 17: third through hole 18: screw cap

19: fourth through hole 20: third rod body 21: second catheter

22: the fastener 23: air duct 24: baffle plate

25: fourth rod 26: thread groove 27: the fifth rod body

28: first rod 29: stabilizer bar 30: second bottle body

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

The first bottle body 1 at least comprises a second hollow cavity 14 and a second rod body 2 arranged in the second hollow cavity 14. The second rod body 2 is arranged in a first hollow inner cavity 3 of the inner wall of the first bottle body 1 in a sliding connection mode. The longitudinal extension direction of the second rod 2 is parallel to the first direction. The second rod body 2 is provided with a limiting block 4 with the longitudinal extension direction vertical to the first direction. The limiting block 4 is in extended abutting joint with the support 5 and is positioned above the support 5. Under the condition that the bracket 5 is moved along the first direction relative to the first bottle body 1 under the action of external force, the second rod body 2 moves along the first direction relative to the inner wall of the first bottle body 1 in a mode that the limiting block 4 is in abutting contact with the extension of the bracket 5. The end of the second rod 2 is provided with a spring 6 with one end fixedly connected to the inner wall of the first bottle 1. Under the condition that the bracket 5 is moved along the first direction by applying an external force to the bracket, the second rod 2 is moved along the first direction relative to the inner wall of the first bottle 1 in a manner that the spring 6 releases the elastic potential energy. The second rod 2 is moved towards the direction of approaching the bracket 5 in such a way that the spring 6 releases the elastic potential energy.

The polyp collector comprises at least a first ball valve 7. The first ball valve 7 is located in the first liquid guide pipe 8. Preferably, the tube body of the first liquid guide tube 8 fixedly connected with the outer wall of the first bottle body 1 is made of transparent hard plastic. For example PVC, HDPE, LDPE or PET, etc., thereby enabling a stable mounting of the first ball valve 7 on the inner wall of the first catheter 8. The first ball valve 7 is rotatably connected to the first liquid guide pipe 8 in a manner that the convex shafts arranged at the two ends penetrate through the inner wall of the first liquid guide pipe 8. The first convex shaft 9 of the first ball valve 7 is rotatably connected with the second rod body 2 in a mode of penetrating into the first hollow inner cavity 3. The first ball valve 7 is provided with a fifth through hole 10 with a through direction perpendicular to the first direction. Under the condition that the first protruding shaft 9 is exerted with external force to rotate along the first direction, the fifth through hole 10 is communicated or disconnected with the first liquid guide pipe 8.

The polyp collector comprises at least a second ball valve 15. The second ball valve 15 is located in the first through hole 11. The first through hole 11 is opened on the inner wall of the first bottle body 1. The interior of the first bottle body 1 is communicated with the interior of the first liquid guide pipe 8 through the first through hole 11. The second ball valve 15 is rotatably connected to the first through hole 11 in such a manner that the protruding shafts arranged at both ends penetrate through the inner wall of the first through hole 11. The second convex shaft 13 of the second ball valve 15 is rotatably connected with the second rod body 2 in a mode of penetrating into the first hollow inner cavity 3. The rotational connection is realized by means of transmission. The second ball valve 15 is provided with a sixth through hole 12, and the through direction of the sixth through hole is always coplanar with the first direction. When the second protruding shaft 13 is rotated in the second direction by an external force, the sixth through hole 12 is in communication with or out of communication with the first through hole 11. In the case where the sixth through hole 12 communicates with the first through hole 11, the interior of the first liquid guide tube 8 communicates with the interior of the first bottle 1.

The polyp collector comprises at least a fourth rod 25. One end of the fourth rod 25 is fixedly connected to the end of the second rod 2 in a manner that the rod extending direction of the fourth rod 25 is perpendicular to the first direction. Preferably, the other end of the fourth rod 25 is slidably connected to the first hollow cavity 3 through a stabilizer bar 29, so as to ensure that the two ends of the fourth rod 25 can stably move synchronously. The first protruding shaft 9 is a screw rod. The fourth rod 25 is provided with a thread groove 26 for connecting the first protruding shaft 9. The shape of the inner wall of the thread groove 26 is adapted to the shape of the outer wall of the first protruding shaft 9. Thus, when the second rod 2 drives the fourth rod 25 to move in the first direction, the first protruding shaft 9 rotates in the first direction in such a way that the first protruding shaft 9 is movably connected into the threaded groove 26. Thereby rotating the first ball valve 7 in the first direction and the fifth through hole 10 is connected or disconnected with the first liquid guide tube 8.

A fifth rod 27 is arranged in the first hollow cavity 3. The end of the fifth rod 27 is hinged to the end of the fourth rod 25 and the end of the second protruding shaft 13. One end of the fifth lever 27 is hinged to the end surface of the second protruding shaft 13 at a position off the center of the circle as viewed in a side view parallel to the first direction on the second protruding shaft 13. When the second shaft 2 moves in the first direction with respect to the inner wall of the first hollow cavity 3, the second protruding shaft 13 rotates with respect to the inner wall of the first hollow cavity 3. Thereby rotating the second ball valve 15 in a direction perpendicular to the first direction, and the sixth through hole 12 is brought into or out of communication with the first through hole 11.

A support 5 is arranged in the first bottle body 1. Preferably the shape of the support 5 is defined by an umbrella shape. The shape of the holder 5 is defined by a circle, seen in a top view of the holder 5 perpendicular to the first direction. Wherein the shape of the support 5 is adapted to the shape of the inner wall of the first body 1. When the collected liquid flows into the first bottle body 1 through the first through holes 11, the umbrella-shaped filter plate has a larger filtering area compared with the circular plate-shaped support 5, and the filtering efficiency can be increased. At least one second through hole 16 is formed on the bracket 5. The bracket 5 is fixedly connected with a baffle 24 for pushing the polyp to move. The shape of the flap 24 is defined by the elongated shape. The body of the flap 24 is parallel to said first direction. The longitudinal extension of the flap 24 is at an acute angle to the first direction. Because first body of rod 28 swing joint is in first bottle 1, when needing to take out the polyp, with first body of rod 28 pulling downwards for stop pulling first body of rod 28 when support 5 is located third through-hole 17 below, exert exogenic action to first body of rod 28 then and make its along first direction rotation relative first bottle 1, in this process because the setting of separation blade 24 the polyp can be promoted by separation blade 24, until it slides into in third through-hole 17 along support 5.

Preferably, the first body 1 includes at least a screw cap 18 therein. The screw cap 18 is fixed to the outer wall of the first bottle body 1 at the third through hole 17 in a rotating connection manner. The screw cap 18 is made of transparent material. Such as PVC, HDPE, LDPE or PET, etc. Preferably, an included angle between the through hole penetrating direction of the third through hole 17 and the first direction is an acute angle. So that the polyp falls into the third through hole 17 and then the screw cap 18 is taken down, and the polyp falls into the screw cap 18 along the third through hole 17, thereby directly obtaining the polyp sample required by the pathological biopsy on the side wall without being separated from the connection between any tube bodies.

Preferably, a fourth through hole 19 is formed on the inner wall of the first bottle body 1, and two ends of the fourth through hole are respectively communicated with the third through hole 17 and the inside of the first bottle body 1. The fourth orifice 19 is capable of draining any liquid that may accumulate in the third orifice 17.

The inner wall of the first bottle body 1 below the third through hole 17 is provided with a third rod body 20 in a fixed connection mode. In a case where the bracket 5 moves in the first direction to below the third through hole 17, the bracket 5 abuts against the third rod 20. Thereby alerting the user of the moving position of the stand 5. Or the user can control the moving position of the support 5 by directly observing the internal condition of the first bottle body 1 made of transparent material.

One end of the first rod 28, which is far away from the bracket 5, is slidably connected into the first bottle 1 according to the manner of fitting between the fastener 22 arranged on the outer wall of the first rod and the inner wall of the first bottle 1. The fastener 22 is secured to the first shank 28 in a manner that its shape is defined by a loop. The shape of the outer wall of the fastener 22 is defined by a wave shape, as viewed in a cross-sectional view of the fastener 22 parallel to the first direction. The fastener 22 has elasticity. The fastener 22 may be vulcanized rubber. Therefore, the outer wall of the fastening member 22 is compressed by the inner wall of the first bottle 1, so as to stabilize the first rod 28 in the first bottle 1, and enable the first rod 28 to move or rotate relative to the first bottle 1 along the first direction. At the same time, when the fastener 22 is positioned at the end of the second catheter tube 21, the elasticity is released by no longer being compressed by the inner wall of the first bottle 1, whereby the fastener 22 protrudes slightly into the second catheter tube 21, limiting the communication between the second catheter tube 21 and the first bottle 1.

The end of the first bottle body 1 is provided with a second catheter 21. The two ends of the second liquid guide tube 21 are respectively communicated with the inside of the first bottle body 1 and the inside of the second bottle body 30.

In the case where the first shaft 28 moves in a direction parallel to the first direction and toward the direction close to the first through hole 11, the fastening member 22 abuts against the inner wall of the first bottle 1 at the second liquid guide tube 21, thereby disconnecting the inside of the first bottle 1 from the inside of the second bottle 30. Preferably, at least two fasteners 22 are provided on the first rod 28. One of the fasteners 22 is used to control the communication between the interior of the first body 1 and the interior of the second body 30, and the other fastener 22 is used to further stabilize the first rod 28 from wobbling.

When polyp collection is not needed, the support 5 is located above the third through hole 17, the first ball valve 7 is opened, the second ball valve 15 is closed, the fastening piece 22 is located at the second liquid guide pipe 21, the inside of the first bottle body 1 is disconnected from the inside of the second bottle body 30, the negative pressure device is communicated with the second bottle body 30 through the air guide pipe 23 for suction, and the first liquid guide pipe 8 and the second bottle body 30 directly form a passage for guiding liquid.

Preferably, when the first rod 28 is forced to be located above the third through hole 17, the first rod 28 drives the second rod 2 to move upward through the stopper 4, and the first protruding shaft 9 and the first ball valve 7 are driven to rotate along the first direction by the way that the outer wall of the first protruding shaft 9 is in threaded connection with the thread groove 26, so that the inside of the first liquid guide tube 8 is communicated with the inside of the fifth through hole 10 and the inside of the second bottle 30. Meanwhile, the first rod 28 drives the second protruding shaft 13 and the second ball valve 15 to rotate through the fifth rod 27, so that the sixth through hole 12 is disconnected from the first through hole 11. Meanwhile, the movement of the first rod 28 drives the fastener 22 to move to the open port of the second liquid guide tube 21, so as to disconnect the communication between the second liquid guide tube 21 and the interior of the first bottle 1. Thereby completely disconnecting the interior of the first bottle 1 from the first catheter 8 and the second bottle 30, respectively.

When polyp needs to be collected, the support 5 is pulled, the support 5 is located below the third through hole 17 and abuts against the third rod body 20, at the moment, the first ball valve 7 is closed, the second ball valve 15 is opened, the fastening piece 22 is located below the second liquid guide pipe 21, the first bottle body 1 is communicated with the second bottle body 30, at the moment, the negative pressure device and the second bottle body 30 are communicated through the air guide pipe 23 for suction, the first liquid guide pipe 8, the first through hole 11, the first bottle body 1 is communicated with the second through hole 16, the second liquid guide pipe 21 and the second bottle body 30 in sequence, and therefore a liquid suction passage is formed. Therefore, the user only needs to push and pull the relative position of the first rod body 28 in the first bottle body 1, the polyp sample can be obtained through the screw cap 18 after the liquid absorption is finished, and the collection of the secondary polyp sample can be carried out after the primary polyp sample is taken out, so that the continuous operation of the user is convenient.

Preferably, when the first rod 28 is forced to be located below the third through hole 17, the first rod 28 drives the second rod 2 to move downward synchronously through the stopper 4, and the first protruding shaft 9 and the first ball valve 7 are driven to rotate along the first direction in a manner that the outer wall of the first protruding shaft 9 is in threaded connection with the thread groove 26, so that the inside of the first liquid guide tube 8 is disconnected from the fifth through hole 10 and the inside of the second bottle 30. Meanwhile, the first rod 28 drives the second protruding shaft 13 and the second ball valve 15 to rotate through the fifth rod 27, so that the sixth through hole 12 is communicated with the first through hole 11. Meanwhile, the movement of the first rod 28 drives the fastener 22 to move to the open port of the second liquid guide tube 21, and the second liquid guide tube 21 is communicated with the inside of the first bottle 1. So that the first liquid guide tube 8 can only communicate with the interior of the second bottle body 30 through the interior of the first bottle body 1.

It should be noted that the above-mentioned embodiments are exemplary, and those skilled in the art can devise various solutions in light of the present disclosure, which are also within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present specification and drawings are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims (10)

1. A polyp collector for gastrointestinal endoscope extirpation at least comprises a first liquid guide pipe (8) for drainage, a first bottle body (1) for collecting polyp and a second bottle body (30) for collecting waste liquid, and is characterized in that a support (5) which is used for filtering the waste liquid and is connected with the inner wall of the first bottle body (1) in a sliding mode is arranged in the first bottle body (1),

under the condition that the bracket (5) is applied with external force to move along a first direction relative to the first bottle body (1), the first liquid guide pipe (8) is communicated with the interior of the second bottle body (30) through the first bottle body (1), and the first direction is a direction perpendicular to the frame body of the bracket (5).

2. The gastroenteroscopic ablation polyp collector of claim 1, further comprising a first ball valve (7) disposed between the first catheter (8) and the second bottle (30), and a second ball valve (15) disposed between the first catheter (8) and the first bottle (1), wherein in a case where the holder (5) is moved in a first direction relative to the first bottle (1) such that the first ball valve (7) is closed and the second ball valve (15) is opened, the first catheter (8) is in a communication relationship with the second bottle (30) and the first catheter (8) is in a communication relationship with the first bottle (1).

3. The gastroenteroscopic ablation polyp collector as claimed in claim 2, further comprising a first rod (28) slidably connected to the inner wall of the first body (1) and having one end fixedly connected to the support (5), and a second catheter (21) having two ends respectively communicating with the inside of the first body (1) and the inside of the second body (30), wherein the first body (1) can communicate or disconnect with the second body (30) through the second catheter (21) in such a manner that the first rod (28) moves in a first direction relative to the first body (1).

4. The collector for polyp extirpation by gastrointestinal endoscope according to claim 3, characterized in that at least one fastening member (22) is fixedly attached to the first shaft (28), wherein the fastening member (22) is in an open state on the second catheter (21) and is in an abutting or non-abutting relationship with an end surface provided on the inner wall of the first body (1) when the first shaft (28) is moved in the first direction relative to the first body (1).

5. The collector for removing polyps by gastrointestinal endoscope according to claim 4, characterized in that the inner wall of the first bottle body (1) is opened with a third through hole (17) for taking out polyps, and both ends of the third through hole are respectively communicated with the inside of the first bottle body (1) and the outside of the first bottle body (1), and an included angle between a through hole penetrating direction of the third through hole (17) and the first direction is an acute angle.

6. Gastroenteroscopic extraction polyp collector according to claim 5, characterized in that at least one flap (24) for pushing a polyp is fixedly arranged on the support (5).

7. Gastroenteroscopic extraction polyp collector according to claim 6, characterized in that the holder (5) can be located above or below the third through hole (17) in such a way that the first shaft (28) moves in a first direction relative to the first body (1).

8. The collector for removing polyps by gastrointestinal endoscope according to claim 7, characterized in that the outer wall of the third through hole (17) is provided with a fourth through hole (19) for leading out waste liquid in the third through hole (17), and two ends of the fourth through hole are respectively communicated with the third through hole (17) and the inside of the first bottle body (1).

9. Gastroenteroscopic extraction polyp collector according to claim 8, characterized in that a first hollow lumen (3) and a second rod (2) movably connected to the inner wall of the first hollow lumen (3) are provided in the inner wall of the first body (1), the second rod (2) being movable in a first direction relative to the first body (1) in such a way that one end thereof is located above the holder (5) and abuts against the holder (5).

10. The collector for polyp extirpation by gastrointestinal endoscope according to claim 9, characterized in that one end of the second rod (2) is rotatably connected to a first protruding shaft (9) provided on the first ball valve (7) and a second protruding shaft (13) provided on the second ball valve (15), respectively.

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