CN211214631U

CN211214631U - Prevent blockking up fistula gastric juice suction tube and fistula gastric juice suction means

Info

Publication number: CN211214631U
Application number: CN201921813994.3U
Authority: CN
Inventors: 周晓情; 肖正中; 吴柱月
Original assignee: Guangxi Zhuang Autonomous Region Institute of Animal Husbandry
Current assignee: Guangxi Zhuang Autonomous Region Institute of Animal Husbandry
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-08-11
Anticipated expiration: 2029-10-25

Abstract

The utility model provides a prevent blockking up stomach juice suction tube of fistula, including being responsible for, end pipe and recoil mechanism, the end pipe includes the body and seals the pipe end that connects in one end of body, the body is kept away from the one end of pipe end and is connected with the one end of being responsible for, the body, pipe and pipe end enclose into a suction channel jointly, the body and/or pipe end portion have offered a plurality of imbibition holes at intervals, each imbibition hole department has installed the filter screen; the main pipe is a hose, and a supporting metal wire is arranged in the pipe wall of the main pipe; the recoil mechanism comprises a recoil air bag, a connecting pipe, an air bag valve and a one-way air valve, the recoil air bag is connected with the main pipe through the connecting pipe, the air bag valve is arranged on the connecting pipe, and the one-way air valve is arranged on the recoil air bag; the main pipe is also provided with a main pipe control valve which is positioned on one side of the recoil air bag back to the liquid suction hole. The anti-blocking fistula gastric juice suction tube can prevent blockage when absorbing fistula gastric juice and is favorable for improving the working efficiency. The utility model also provides a fistula gastric juice suction means.

Description

Prevent blockking up fistula gastric juice suction tube and fistula gastric juice suction means

Technical Field

The utility model relates to a fistula gastric juice suction means, concretely relates to prevent blockking up fistula gastric juice suction tube.

Background

Rumen fluid is liquid in rumens of animals such as cattle and sheep, and research on feed in-vitro digestion, microbial flora and the like is often carried out by collecting rumen fluid in scientific research. The traditional rumen fluid is absorbed by taking a rubber hose or a special anti-bite tube as an absorption tube, directly inserting the tube into the rumen through the nasal cavity or oral cavity of animals such as cattle and sheep, and the like, and absorbing the liquid by matching with a vacuum bottle and a vacuum pump, wherein one or more liquid absorption holes are reserved at the head of the absorption tube. The suction tube has the following problems when sucking the liquid in the rumen: 1. referring to fig. 1, the rumen 200 is generally divided into three layers, a feed layer 210 at the bottom, a fistula gastric juice layer 230 at the middle, and a gas layer 250 at the top, and the fistula gastric juice layer 230 is generally thinner. During the extraction, must guarantee that the imbibition hole 65 of sucking tube can the suction rumen liquid in fistula gastric juice layer 230, and insert feed layer 210 with imbibition hole 65 very easily during actual operation, when the extraction of fistula gastric juice, fodder etc. in feed layer 210 are easily inhaled the sucking tube and lead to imbibition hole 65 or sucking tube to be stopped up, cause the absorption of rumen liquid to fail. 2. When the extraction tube is blocked, the extraction tube of the prior art needs to be taken out from the rumen 200, and the extraction tube is cleaned, sterilized or replaced by a new one and then inserted again, thereby wasting time and labor, having low working efficiency and easily causing damage to the nasal cavity, oral cavity or esophagus of an animal after being inserted for a plurality of times.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of above-mentioned technical problem at least, provide a prevent blockking up fistula gastric juice suction tube, and should prevent blockking up fistula gastric juice suction tube and can improve work efficiency.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

an anti-clogging fistula gastric juice suction tube comprises a main tube and a tip tube, wherein the tip tube comprises a tube body and a tube end part connected to one end of the tube body in a sealing manner, one end of the tube body, which is far away from the tube end part, is connected with one end of the main tube, the tube body and the tube end part jointly enclose a suction channel, a plurality of liquid suction holes are formed in the tube body and/or the tube end part at intervals, the liquid suction holes are communicated with the suction channel, and a filter screen is arranged at each liquid suction hole; the main pipe is a hose, and a supporting metal wire is arranged in the pipe wall of the main pipe; the anti-blocking fistula gastric juice suction tube further comprises a backflushing mechanism, the backflushing mechanism comprises a backflushing air bag, a connecting pipe, an air bag valve and a one-way air valve, the backflushing air bag, the air bag valve and the one-way air valve are all located outside the main tube, the backflushing air bag is connected with the main tube through the connecting pipe, the backflushing air bag is communicated with the suction channel, the air bag valve is arranged on the connecting pipe, and the one-way air valve is arranged on the backflushing air bag to allow external air to enter the backflushing air bag through the one-way; the main pipe is also provided with a main pipe control valve which is positioned on one side of the recoil air bag back to the liquid suction hole.

Further, the support wire is helical.

Further, the main pipe, the pipe body and the pipe end are all made of rubber materials, and the pipe wall thickness of the pipe body and the pipe end is larger than that of the main pipe.

Further, the filter screen extends to the main pipe from the pipe end part and sequentially passes through the plurality of liquid suction holes.

Further, a plurality of imbibition holes have been seted up on the body at intervals, prevent blockking up fistula gastric juice suction tube still includes inflatable air bag and gas injection valve, inflatable air bag installs on the pipe wall of body, and with be located imbibition hole on the body is relative, the gas injection valve is located main outside of the tubes and with the person in charge is connected, still be equipped with inflation channel on preventing blockking up fistula gastric juice suction tube, inflation channel certainly the person in charge extends to the body, inflatable air bag passes through inflation channel with the gas injection valve intercommunication.

Further, the inflatable air bag is arranged in the pipe wall of the pipe body.

Furthermore, a counterweight is also arranged in the tube wall of the tube body, and the counterweight is opposite to the inflatable air bag.

Further, the end pipe is bullet-shaped.

Further, the gas injection valve comprises a shell, a spring and a steel ball, one end of the shell is connected with the outer wall of the main pipe, a gas injection channel is arranged in the shell in a penetrating way, the gas injection channel comprises a first gas injection channel, a second gas injection channel and a third gas injection channel which are sequentially communicated, the aperture of the first gas injection channel is gradually reduced along the direction far away from the second gas injection channel, the aperture of the third gas injection channel is smaller than that of the second gas injection channel so as to form a step part between the third gas injection channel and the second gas injection channel, the third gas injection channel is communicated with the suction channel, the spring and the steel ball are contained in the gas injection channel, the two opposite ends of the spring are respectively connected with the step part and the steel ball, and the steel ball can be contacted with the inner wall of the first gas injection channel so as to seal the gas injection channel, the steel ball can move towards the second gas injection channel under the pressure, so that the gas injection channel is communicated with the outside.

The utility model also provides a fistula gastric juice suction means, including preventing blockking up fistula gastric juice suction tube, container bottle, feed liquor pipe, vacuum tube and vacuum pump, prevent blockking up fistula gastric juice suction tube including main pipe and end pipe, end pipe includes body and seals the pipe tip of connecting in body one end, the body is kept away from the one end of pipe tip with the one end of main pipe is connected, main pipe, body and the pipe tip enclose into a suction passageway jointly, body and/or pipe tip go up the interval and have seted up a plurality of imbibition holes, a plurality of imbibition holes all with suction passageway intercommunication, each imbibition hole department has installed the filter screen; the main pipe is a hose, and a supporting metal wire is arranged in the pipe wall of the main pipe; the anti-blocking fistula gastric juice suction tube further comprises a backflushing mechanism, the backflushing mechanism comprises a backflushing air bag, a connecting pipe, an air bag valve and a one-way air valve, the backflushing air bag, the air bag valve and the one-way air valve are all located outside the main tube, the backflushing air bag is connected with the main tube through the connecting pipe, the backflushing air bag is communicated with the suction channel, the air bag valve is arranged on the connecting pipe, and the one-way air valve is arranged on the backflushing air bag to allow external air to enter the backflushing air bag through the one-way air; the main pipe is also provided with a main pipe control valve which is positioned on one side of the recoil air bag back to the liquid suction hole; one end of the liquid inlet pipe and one end of the vacuum pipe are both connected with the container bottle, the other end of the liquid inlet pipe is connected with one end of the main pipe, which is far away from the end head pipe, and the other end of the vacuum pipe is connected with the vacuum pump.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:

1. according to the anti-clogging fistula gastric juice suction tube, feed and other substances entering the anti-clogging fistula gastric juice suction tube are blocked through the filter screen at the liquid suction hole, so that large granular substances are prevented from entering the suction tube to cause blockage of the suction tube; when the liquid suction hole is blocked by the feed in the feed layer, gas is backflushed to the liquid suction hole through the backflushing air bag so as to clear the blockage at the liquid suction hole; the supporting metal wire is arranged in the pipe wall of the main pipe, and the supporting metal wire provides a supporting force for the main pipe to prevent the main pipe from being pressed by the inner wall of the esophagus and the like to collapse to cause blockage. Therefore, the anti-blocking fistula gastric juice suction tube can solve the problem that the residue blocks the liquid suction hole to cause the rumen juice suction failure, the suction tube does not need to be repeatedly inserted, the working efficiency is improved, and the damage to the nasal cavity, the oral cavity or the esophagus of an animal caused by the liquid taking process can be reduced.

2. When the anti-blocking fistula gastric juice suction tube is used, the inflatable air bag can be inflated, the buoyancy force of the inflatable air bag is utilized to enable the end tube to float on a rumen liquid layer in rumen, so that a liquid suction hole in the end tube is accurately positioned on the fistula gastric liquid layer; the end pipe is provided with the weight piece on the one side relative with the air bag, utilizes the weight piece can make the imbibition hole that sets up relative with the air bag be located the liquid level below of fistula stomach liquid layer to further ensure going on smoothly of absorption of fistula stomach juice.

3. The main pipe and the end pipe of the anti-clogging gastric juice suction pipe are made of rubber materials, so that the comfort level of animals can be improved during liquid taking, and the main pipe and the end pipe have certain flexibility and elasticity and are more beneficial to floating of the end pipe; the pipe wall thickness of end pipe is greater than the pipe wall thickness of being responsible for, not only does benefit to the installation of filter screen and counterweight, and makes end pipe weight great, ensures that the imbibition hole that is located the pipe end is located the liquid level below of fistula stomach liquid layer to the going on of imbibition.

4. Above-mentioned prevent blockking up stomach juice suction tube of fistula, the air bag of aerifing is installed in the pipe wall of end pipe for the end pipe outward appearance is smooth, does benefit to and inserts, and the end pipe adopts rubber materials to make, has elasticity, can not lead to the fact the hindrance to the bulging of air bag.

Drawings

Fig. 1 is a schematic view of a fistula stomach.

Fig. 2 is a schematic structural view of a fistula gastric juice suction device in use according to a preferred embodiment of the present invention.

Fig. 3 is a schematic sectional view of the fistula-proof gastric juice suction tube according to the preferred embodiment of the present invention.

Fig. 4 is a schematic bottom view of the anti-clogging fistula gastric juice aspiration tube shown in fig. 3.

Fig. 5 is a schematic cross-sectional view of the insufflation valve of the anti-clogging fistula gastric juice suction tube shown in fig. 3.

Fig. 6 is a partial structure view of the gastric juice sucking device of fig. 2.

Description of the main elements

100-fistula gastric juice suction device, 2-container bottle, 21-bottle body, 211-bottle mouth, 23-rubber plug, 3-liquid inlet pipe, 4-vacuum pipe, 5-vacuum pump, 6-anti-clogging fistula gastric juice suction pipe, 60-main pipe, 61-supporting metal wire, 62-end pipe, 621-pipe body, 623-pipe end, 63-suction channel, 64-recoil mechanism, 641-recoil air bag, 642-connecting pipe, 643-air bag valve, 644-one-way air valve, 65-liquid suction hole, 66-filter screen, 67-main pipe control valve, 68-air bag, 69-air injection valve, 691-shell, 692-spring, 693-steel ball, 694-air injection channel, 695-first air injection channel, 696-second gas injection channel, 697-third gas injection channel, 698-step part, 699-guide channel, 7-inflation channel, 8-weight part, 200-rumen, 210-feed layer, 230-fistula stomach liquid layer, 250-gas layer, 300-esophagus.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 2, a preferred embodiment of the present invention provides a fistula gastric juice suction device 100, which comprises a container bottle 2, a liquid inlet pipe 3, a vacuum pipe 4, a vacuum pump 5 and an anti-clogging fistula gastric juice suction pipe 6. The container bottle 2 is used for holding the fistula gastric juice of absorption, and the one end of feed liquor pipe 3 and the one end of vacuum tube 4 all are connected with container bottle 2, and the other end of feed liquor pipe 3 is connected with the one end of preventing blockking up fistula gastric juice suction tube 6, and the other end and the vacuum pump 5 of vacuum tube 4 are connected.

In this embodiment, the container bottle 2 includes a body 21 and a rubber stopper 23, and a bottle opening 211 communicating with the inner cavity of the body 21 is provided at the top of the body 21. The rubber plug 23 is installed at the bottle mouth 211, and two insertion holes (not shown) are opened on the rubber plug 23. One end of the liquid inlet pipe 3 and one end of the vacuum pipe 4 respectively penetrate through the two insertion holes to extend into the bottle body 21 and are communicated with the bottle body 21. The vacuum pump 5 is located outside the container bottle 2 and can make the inside of the container bottle 2 be negative pressure. The structure of the vacuum pump 5 is prior art and will not be described herein for brevity.

The anti-clogging fistula gastric juice suction tube 6 is used for being inserted into the fistula stomach 200 and can suck fistula gastric juice in the fistula stomach 200 under the action of the vacuum pump 5. Referring also to fig. 3, the anti-clogging gastric juice aspiration tube 6 includes a main tube 60, a tip tube 62 and a recoil mechanism 64. In the present embodiment, the main pipe 60 is a hose having a substantially hollow circular tube shape with both ends open, and one end of the main pipe 60 is connected to the end of the liquid inlet pipe 3 located outside the vessel bottle 2 by means of insertion or the like. Preferably, the main tube 60 is made of a rubber material. The supporting wires 61 are installed in the pipe wall of the main pipe 60, preferably, the supporting wires 61 are steel wires, and the supporting wires 61 are spirally distributed in the pipe wall of the main pipe 60.

The head pipe 62 is substantially bullet-shaped and connects and closes one end of the main pipe 60 remote from the liquid inlet pipe 3. The head pipe 62 includes a pipe body 621 and a pipe end 623 connected to one end of the pipe body 621 in a sealing manner. The end of the pipe 621 far away from the pipe end 623 is connected with the main pipe 60, the pipe 621, the pipe end 623 and the main pipe 60 enclose a suction channel 63, and the suction channel 63 is communicated with the liquid inlet pipe 3. In this embodiment, the end pipe 62, that is, the pipe 621 and the pipe end 623 are made of rubber material, the pipe 621, the pipe end 623 and the main pipe 60 are integrally molded, and the wall thickness of the pipe 621 and the wall thickness of the pipe end 623 are larger than the wall thickness of the main pipe 60. In this embodiment, the tube wall of the tube 621 and the tube wall of the tube end 623 are both provided with a plurality of liquid suction holes 65 at intervals, and the plurality of liquid suction holes 65 are both communicated with the suction channel 63. Referring to fig. 4, preferably, the tube wall of the tube 621 is provided with 3-4 rows of liquid suction holes 65, and a plurality of liquid suction holes 65 in each row are distributed at intervals along the axial direction of the tube 621. Each liquid suction hole 65 is provided with a filter screen 66, which specifically comprises: in this embodiment, the strainer 66 extends from the pipe end 623 to the main pipe 60, and passes through the plurality of liquid suction holes 65 in sequence.

The recoil mechanism 64 includes a recoil air cell 641, a connecting tube 642, an air cell valve 643, and a one-way air valve 644. The recoil air cell 641 is located outside the main tube 60, and it is connected to the main tube 60 through a connection tube 642, and the recoil air cell 641 is communicated with the suction passage 63 through the connection tube 642. Bladder valve 643 is mounted on connecting tube 642 and is located outside main tube 60 for controlling the opening and closing of connecting tube 642. The one-way gas valve 644 is installed on the recoil air bag 641 and located outside the main pipe 60, and is capable of allowing external gas to enter the recoil air bag 641 through the one-way gas valve 644 and not allowing gas to flow from the recoil air bag 641 to the outside through the one-way gas valve 644. The structure of the one-way valve 644 is well known in the art and will not be described herein for brevity. The main pipe 60 is also provided with a main pipe control valve 67, and the main pipe control valve 67 is positioned on the side of the recoil air bag 641 opposite to the liquid absorbing hole 65 and used for controlling the on-off of the main pipe 60. The structures of the main control valve 67 and the air bag valve 643 are all in the prior art, and are not described herein for brevity.

The anti-clogging fistula gastric juice suction tube 6 further comprises an inflatable air bag 68 and an air injection valve 69. The air bag 68 is mounted on the wall of the tube 621 and is disposed opposite to the liquid suction hole 65 on the tube 621. In the present embodiment, the inflatable bladder 68 is installed in the tube wall of the tube 621. The gas injection valve 69 is located outside the main pipe 60 and connected to the main pipe 60, and in the present embodiment, the gas injection valve 69 is located between the recoil air bag 641 and the head pipe 62. The anti-clogging fistula gastric juice suction tube 6 is also internally provided with an inflation channel 7, the inflation channel 7 extends from the main tube 60 to the tube body 621 of the end tube 62, and the inflation air bag 68 is communicated with the air injection valve 69 through the inflation channel 7. The tube wall of the tube 621 is further provided with a weight 8, and the weight 8 is disposed opposite to the inflatable bladder 68. In the present embodiment, the weight 8 is a metal block fixed to the side of the filter screen 66 facing the suction passage 63.

Referring also to fig. 5, in the present embodiment, the gas injection valve 69 includes a housing 691, a spring 692, and a steel ball 693. One end of the housing 691 is connected with the outer wall of the main pipe 60, a gas injection channel 694 is arranged in the housing 691 in a penetrating manner, and the gas injection channel 694 comprises a first gas injection channel 695, a second gas injection channel 696 and a third gas injection channel 697 which are sequentially communicated. The aperture of the first gas injection channel 695 is gradually smaller in a direction away from the second gas injection channel 696, the aperture of the third gas injection channel 697 is smaller than the aperture of the second gas injection channel 696 to form a step 698 between the third gas injection channel 697 and the second gas injection channel 696, and the third gas injection channel 697 is communicated with the suction channel 63. The spring 692 and the steel ball 693 are both accommodated in the gas injection channel 694, and opposite ends of the spring 692 are respectively connected with the stepped portion 698 and the steel ball 693. In the initial state, the steel ball 693 can contact with the inner wall of the first gas injection channel 695 under the action of the spring 692 to close the gas injection channel 694 to prevent gas leakage; the steel ball 693 is movable toward the second gas-injection passage 696 when pressurized, so that the gas-injection passage 694 communicates with the outside, thereby enabling outside gas to be injected into the inflation passage 7 from within the gas-injection valve 69.

In this embodiment, the housing 691 further defines a guide channel 699 therein, and the guide channel 699 is communicated with an end of the first gas injection channel 695 away from the second gas injection channel 696, and is coaxially disposed with the first gas injection channel 695, the second gas injection channel 696, and the third gas injection channel 697. The bore diameter of the guide channel 699 becomes progressively larger in a direction away from the first gas injection channel 695.

The total length of the anti-clogging fistula gastric juice suction tube 6 is preferably 1.5-2.5cm, the diameter of the main tube 60 is preferably 1.5-2.5cm, and the volume of the inflatable air bag 68 is preferably 50-100 ml; the diameter of the liquid suction hole 65 is about 4 mm; it is understood that in other embodiments, other dimensions may be provided as desired.

When the anti-clogging fistula gastric juice suction tube 6 is produced, in the forming procedure, the supporting metal wire 61, the filter screen 66, the counterweight 8 and the recoil air bag 641 are placed in a mold, glue is injected into the mold, and the supporting metal wire 61, the filter screen 66, the counterweight 8 and the recoil air bag 641 are combined with the glue into a whole after forming. The production of the rubber tube may also include other processes, which are known in the art and will not be described herein for brevity.

When the anti-blocking fistula gastric juice suction tube 6 is used, the anti-blocking fistula gastric juice suction tube mainly comprises the following steps:

step S1, coating a small amount of lubricant such as paraffin oil on the part of the anti-clogging fistula gastric juice suction tube 6 for inserting into the fistula stomach 200, and inserting into the rumen 200 of cattle and sheep through the nostrils or oral cavity of animals.

Step S2, connecting the fistula gastric juice extracting device 100 according to fig. 2.

Step S3, injecting about 50-100ml of air into the inflatable air bag 68 by a syringe (not shown, the structure of the syringe belongs to the prior art, and is not described herein for brevity) with a needle removed, specifically: a needle head seat used for connecting the syringe with the needle head is inserted into the gas injection channel 694 of the gas injection valve 69 along the guide channel 699, so that the needle head seat of the syringe is pressed against the steel ball 693, the steel ball 693 is driven to move towards the third gas injection channel 697, the steel ball 693 is separated from the inner wall of the first gas injection channel 695, at the moment, the first gas injection channel 695 is communicated with the syringe, and the spring 692 is compressed; the piston rod of the injector is pushed, the gas in the injector sequentially enters the inflatable air bag 68 through the gas injection channel 694 and the inflation channel 7, after the air is injected into the inflatable air bag 68, a bulge (figure 6) is formed on the pipe body 621, and the tip pipe 62 floats on the fistula gastric juice layer 230 of the fistula stomach under the buoyancy of the inflatable air bag 68; the liquid suction hole 65 is positioned below the liquid level of the fistula gastric juice layer 230 under the action of the gravity of the head pipe 62 and the gravity of the weight member 8. After the injection of air is completed, the syringe is pulled out from the air injection valve 69, and the steel ball 693 is automatically returned to contact with the inner wall of the first air injection passage 695 by the elastic restoring force of the spring 692, so as to prevent the gas inside the inflatable air bag 68 from leaking.

Step S4, the airbag valve 643 is closed, the main pipe control valve 67 is opened, the vacuum pump 5 makes the interior of the container bottle 2 be negative pressure, and rumen fluid enters the container bottle 2 for storage through the fluid suction hole 65, the suction channel 63 and the fluid inlet pipe 3 in sequence. In the process, when no rumen fluid is sucked, the anti-clogging fistula gastric fluid suction tube 6 can be properly rotated until fistula gastric fluid is sucked out. If the rumen fluid can not be sucked after the anti-clogging fistula gastric fluid suction tube 6 is rotated, the situation that the fluid suction hole 65 is blocked can occur, at this time, the vacuum pump 5 is suspended, the air bag valve 643 is opened, the main tube control valve 67 is closed, the recoil air bag 641 is pressed by hand for a plurality of times, so that the gas in the recoil air bag 641 is discharged towards the fistula stomach 200 through the suction channel 63 and the fluid suction hole 65, and the blockage is flushed away by reverse flushing.

And step S5, after sucking rumen fluid, sucking out the gas in the inflatable air bag 68 by using a syringe with a needle removed, and pulling out the anti-clogging fistula gastric fluid suction tube 6 from the body of the animal.

It is understood that the arrangement of the aspirating holes 65 is not limited to the present embodiment, and the aspirating holes 65 may be provided only on the tube head 623 or the tube body 621 as long as the aspirating holes 65 can aspirate the gastric fistula fluid.

It is to be understood that the weight member 8 is not limited to the metal block of the present embodiment as long as the weight thereof satisfies the requirement; the manner of attaching the weight 8 is not limited to this embodiment, and it is sufficient if it is provided in the tube 621 so as to face the inflatable bag 68.

The above description is for the detailed description of the preferred possible embodiments of the present invention, but the embodiments are not intended to limit the scope of the present invention, and all equivalent changes or modifications accomplished under the technical spirit suggested by the present invention should fall within the scope of the present invention.

Claims

1. An anti-clogging fistula gastric juice suction tube is characterized in that: the liquid suction device comprises a main pipe and an end head pipe, wherein the end head pipe comprises a pipe body and a pipe end part connected to one end of the pipe body in a sealing manner, one end of the pipe body, which is far away from the pipe end part, is connected with one end of the main pipe, the pipe body and the pipe end part jointly enclose a suction channel, a plurality of liquid suction holes are formed in the pipe body and/or the pipe end part at intervals, the liquid suction holes are communicated with the suction channel, and a filter screen is arranged at each liquid suction hole; the main pipe is a hose, and a supporting metal wire is arranged in the pipe wall of the main pipe; the anti-blocking fistula gastric juice suction tube further comprises a backflushing mechanism, the backflushing mechanism comprises a backflushing air bag, a connecting pipe, an air bag valve and a one-way air valve, the backflushing air bag, the air bag valve and the one-way air valve are all located outside the main tube, the backflushing air bag is connected with the main tube through the connecting pipe, the backflushing air bag is communicated with the suction channel, the air bag valve is arranged on the connecting pipe, and the one-way air valve is arranged on the backflushing air bag to allow external air to enter the backflushing air bag through the one-way; the main pipe is also provided with a main pipe control valve which is positioned on one side of the recoil air bag back to the liquid suction hole.

2. The anti-clogging gastric juice aspiration tube of claim 1, wherein: the support wire is helical.

3. The anti-clogging gastric juice aspiration tube of claim 1, wherein: the main pipe, the pipe body and the pipe end part are all made of rubber materials, and the pipe wall thickness of the pipe body and the pipe end part is larger than that of the main pipe.

4. The anti-clogging gastric juice aspiration tube of claim 1, wherein: the filter screen extends to from the pipe end to the main pipe and sequentially passes through the plurality of liquid suction holes.

5. The anti-clogging gastric juice aspiration tube of claim 1, wherein: the utility model discloses a prevent blockking up fistula gastric juice suction tube, including the body, the body is provided with a plurality of at intervals the imbibition hole, prevent blockking up fistula gastric juice suction tube still includes air bag and gas injection valve, air bag installs on the pipe wall of body, and with it is relative to be located imbibition hole on the body, the gas injection valve is located outside the main tube and with the main tube is connected, still be equipped with inflation channel on preventing blockking up fistula gastric juice suction tube, inflation channel certainly the main tube extends to the body, air bag passes through inflation channel with the gas injection valve intercommunication.

6. The anti-clogging gastric juice aspiration tube of claim 5, wherein: the inflatable air bag is arranged in the pipe wall of the pipe body.

7. The anti-clogging gastric juice aspiration tube of claim 6, wherein: the tube wall of the tube body is also provided with a counterweight part, and the counterweight part is opposite to the inflatable air bag.

8. The anti-clogging gastric juice aspiration tube of claim 1, wherein: the end pipe is bullet-shaped.

9. The anti-clogging gastric juice aspiration tube of claim 5, wherein: the gas injection valve comprises a shell, a spring and a steel ball, one end of the shell is connected with the outer wall of the main pipe, a gas injection channel is arranged in the shell in a run-through manner, the gas injection channel comprises a first gas injection channel, a second gas injection channel and a third gas injection channel which are sequentially communicated, the aperture of the first gas injection channel is gradually reduced along the direction far away from the second gas injection channel, the aperture of the third gas injection channel is smaller than that of the second gas injection channel so as to form a step part between the third gas injection channel and the second gas injection channel, the third gas injection channel is communicated with the suction channel, the spring and the steel ball are both contained in the gas injection channel, the opposite two ends of the spring are respectively connected with the step part and the steel ball, and the steel ball can be contacted with the inner wall of the first gas injection channel so as to seal the gas injection channel, the steel ball can move towards the second gas injection channel under the pressure, so that the gas injection channel is communicated with the outside.

10. A gastric juice fistula suction device, which is characterized in that: the anti-blocking fistula gastric juice suction tube comprises an anti-blocking fistula gastric juice suction tube, a container bottle, a liquid inlet tube, a vacuum tube and a vacuum pump, wherein the anti-blocking fistula gastric juice suction tube comprises a main tube and an end head tube, the end head tube comprises a tube body and a tube end part connected to one end of the tube body in a sealing manner, one end of the tube body, far away from the tube end part, is connected with one end of the main tube, the tube body and the tube end part jointly form a suction channel, a plurality of liquid suction holes are formed in the tube body and/or the tube end part at intervals, the plurality of liquid suction holes are communicated with the; the main pipe is a hose, and a supporting metal wire is arranged in the pipe wall of the main pipe; the anti-blocking fistula gastric juice suction tube further comprises a backflushing mechanism, the backflushing mechanism comprises a backflushing air bag, a connecting pipe, an air bag valve and a one-way air valve, the backflushing air bag, the air bag valve and the one-way air valve are all located outside the main tube, the backflushing air bag is connected with the main tube through the connecting pipe, the backflushing air bag is communicated with the suction channel, the air bag valve is arranged on the connecting pipe, and the one-way air valve is arranged on the backflushing air bag to allow external air to enter the backflushing air bag through the one-way air; the main pipe is also provided with a main pipe control valve which is positioned on one side of the recoil air bag back to the liquid suction hole; one end of the liquid inlet pipe and one end of the vacuum pipe are both connected with the container bottle, the other end of the liquid inlet pipe is connected with one end of the main pipe, which is far away from the end head pipe, and the other end of the vacuum pipe is connected with the vacuum pump.