CN111700648A - Liquid taking capsule, liquid taking system and capsule liquid taking method - Google Patents

Abstract

The application provides a liquid taking capsule and a liquid taking system having the same. The capsule includes a capsule housing, a wireless transmission module, a triggering device and a processing module, and the wireless transmission module, the triggering device and the processing module are all arranged in the capsule housing. The capsule shell is formed with a first accommodating part, a liquid inlet is formed on the side wall of the first accommodating part, and a sealing elastic sheet is blocked on the liquid inlet. The wireless transmission module receives the external liquid taking command and transmits the command to the processing module. The processing module controls the trigger device to perform the liquid taking operation according to the liquid taking command, and the trigger device reduces the air pressure in the first accommodating part, so that the first accommodating part A pressure difference is formed with the external environment, and the air pressure difference pushes the sealing elastic sheet to open the liquid inlet, so that the first accommodating part is communicated with the cavity environment. The capsule can easily and accurately perform the liquid taking operation in the cavity.

Description

Liquid taking capsule, liquid taking system and capsule liquid taking method

technical field

The invention relates to the field of medical devices, in particular to a liquid taking capsule, a liquid taking system and a capsule liquid taking method.

Background technique

Gastrointestinal disease is a common disease. During the diagnosis and treatment of gastrointestinal disease, it is sometimes necessary to remove the fluid in the stomach and intestines for analysis, so as to determine the diagnosis and treatment plan. In the prior art, a catheter endoscope is generally inserted into a subject's body to extract gastrointestinal juice or gastrointestinal tissue. Since it is difficult to insert the catheter endoscope into the body of the subject to operate, there are higher requirements for the operator. When the method is improperly performed, the subject may experience severe discomfort, causing the subject's physiological response, thereby affecting the sampling operation. In addition, the catheter endoscope cannot reach deeper parts such as the small intestine, which greatly limits the detection of diseases.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a liquid-taking capsule and a liquid-taking system having the same. The liquid-taking capsule can enter the cavity in the form of a capsule, and after reaching a predetermined position in the cavity, it is relatively easy and accurate to take the liquid from the position. liquid operation.

The present invention provides a liquid taking capsule, comprising a capsule shell, a wireless transmission module, a triggering device and a processing module, wherein the wireless transmission module, the triggering device and the processing module are all arranged in the capsule shell, and the The capsule shell is formed with a first accommodating part, a liquid inlet is formed on the side wall of the first accommodating part, a sealing elastic sheet is blocked at the liquid inlet, and the wireless transmission module receives external liquid taking command, and transmit the command to the processing module, the processing module controls the trigger device to perform a liquid taking operation according to the liquid taking command, and the trigger device reduces the air pressure in the first accommodating part, so that the first A pressure difference is formed between the accommodating part and the cavity environment, and the pressure difference pushes the sealing elastic sheet to open the liquid inlet, so that the first accommodating part communicates with the cavity environment.

Further, the capsule shell is further formed with a second accommodating part, a diaphragm is arranged between the first accommodating part and the second accommodating part, and the diaphragm separates the first accommodating part and the second accommodating part accommodating part; when the liquid is not taken, the air pressure of the second accommodating part and the average air pressure of the first accommodating part and the second accommodating part are all lower than the air pressure in the cavity, and the trigger device is connected to the After the liquid taking command is given, the second accommodating part and the first accommodating part are communicated, so that the pressure of the first accommodating part is lower than the pressure of the cavity environment.

Further, the triggering device includes a fixed seat, a solid hot melt that is heated and melted, a heating wire and an elastic member; the solid hot melt is arranged in the fixed seat, and the heating wire is electrically connected to the processing module. connected; the elastic member is fixed in the solid hot melt, and the elastic member is in a compressed state, and the elastic recovery direction of the elastic member is set towards the diaphragm; when the elastic member faces the diaphragm One end is provided with a needle body. When the processing module receives the liquid taking command, it controls the heating wire to heat the solid hot melt. After the solid hot melt is melted, the elastic member recovers and drives the The needle body punctures the septum, so that the first accommodating part communicates with the second accommodating part.

Further, the triggering device includes a solid hot melt that is heated and melted and a heating wire that is in contact with the solid hot melt, the diaphragm is provided with a communication hole that communicates with the first accommodating portion and the second accommodating portion, The solid hot melt is blocked in the communication hole, the heating wire is electrically connected to the processing module, and the processing module controls the heating wire to melt the solid hot melt after receiving the liquid taking command. When the object is heated, the solid hot melt is melted, so that the first accommodating part is communicated with the second accommodating part.

Further, a second accommodating part is also formed in the capsule shell, a diaphragm is arranged between the first accommodating part and the second accommodating part, and the triggering device includes a fixing seat, a solid hot melt that is heated and melted , a heating wire and an elastic member, the solid hot melt is arranged in the fixing seat, the heating wire is electrically connected with the processing module, and the elastic member is in a deformed state and is sealed in the solid hot melt Inside, when the processing module receives the liquid taking command, it controls the heating wire to heat the solid hot melt. After the solid hot melt is melted, the elastic member recovers and drives the diaphragm to expand the Describe the volume in the first accommodating part.

Further, the triggering device is disposed in the first accommodating portion, and the elastic member is in a compressed state and fixed in the solid hot melt.

Further, the triggering device is disposed in the second accommodating portion, the elastic member is connected with the diaphragm, and the elastic member is in a stretched state and fixed in the solid hot melt.

Further, the melting point of the solid hot melt is 45°C-55°C.

Further, the solid hot melt is paraffin.

Further, the position detection module is an optical imaging system, and a transparent layer is formed on a portion of the capsule housing corresponding to the lens of the optical imaging system.

Further, the liquid inlet is located outside the shooting angle of the lens.

Further, a liquid absorbing device is also arranged in the first accommodating part.

A liquid taking system includes the above-mentioned liquid taking capsule and a control module, wherein the control module receives a position signal sent by the liquid taking capsule, and sends a liquid taking command to the liquid taking capsule.

A method for taking liquid from a capsule, when the above-mentioned liquid taking capsule reaches the liquid taking position, the control module sends a liquid taking command to the liquid taking capsule;

The wireless transmission module of the liquid-taking capsule receives the liquid-taking command, and sends the liquid-taking command to the processing module;

The processing module controls the trigger device to reduce the air pressure of the first accommodating part until the air pressure of the first accommodating part is lower than the pressure of the cavity environment, so as to form a pressure difference;

The sealing elastic sheet is separated from the liquid inlet under the action of the pressure difference to open the liquid inlet, so that the first accommodating portion is communicated with the cavity environment through the liquid inlet.

To sum up, in the present invention, through the setting of the trigger device, the air pressure difference is formed inside and outside the first accommodating part, so that the sealing elastic sheet opens the liquid inlet, and the liquid can be taken. After the liquid extraction is completed, since there is no air pressure difference, or the air pressure difference is reduced, the sealing shrapnel closes the liquid inlet again, preventing the outside liquid from entering again. After the liquid-taking capsule reaches a predetermined position in the cavity, the liquid-taking operation can be performed at the position relatively easily and accurately.

The above description is only an overview of the technical solutions of the present invention, in order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand , the following specific preferred embodiments, and in conjunction with the accompanying drawings, are described in detail as follows.

Description of drawings

FIG. 1 is a schematic cross-sectional structure diagram of a liquid-taking capsule provided in a first embodiment of the present invention.

FIG. 2 is a system block diagram of the liquid-taking capsule provided by the first embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a liquid-taking capsule triggering device and a diaphragm according to a second embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a liquid-taking capsule triggering device and a diaphragm provided by a third embodiment of the present invention.

FIG. 5 is a system block diagram of a liquid taking system provided by an embodiment of the present invention.

Detailed ways

In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the present invention is described in detail below with reference to the accompanying drawings and preferred embodiments.

The object of the present invention is to provide a liquid-taking capsule and a liquid-taking system having the same, the liquid-taking capsule enters the cavity, and the liquid-taking operation is performed at the liquid-taking position. The cavity is a closed space body with a certain pressure, and the cavity contains fluid (liquid and/or gas). The environment in the cavity (ie the cavity environment) may be a gas environment or a liquid environment. After the liquid taking capsule enters the cavity, in a gas environment or in a liquid environment but not taking liquid, under the combined action of the internal pressure of the liquid taking capsule, the pre-tightening force of the sealing shrapnel 112 and the pressure of the cavity environment, the sealing shrapnel 112 is sealed into the cavity. The liquid port 111 prevents liquid and/or gas from entering the liquid capsule. After the liquid-taking capsule moves to the liquid-taking position, it is in a liquid environment and performs the liquid-taking operation. Under the combined action of the internal pressure of the liquid-taking capsule, the pre-tightening force of the sealing elastic sheet 112 and the environmental pressure of the cavity, the sealing elastic sheet 112 is separated from the liquid inlet 111, so that the liquid enters the liquid-taking capsule. After the liquid taking capsule completes the liquid taking operation, the cavity environment may be a liquid environment or a gas environment, but under the combined action of the internal pressure of the liquid taking capsule, the pre-tightening force of the sealing shrapnel 112 and the pressure of the cavity environment, the sealing shrapnel 112 will be regenerated. The liquid inlet 111 is sealed to effectively prevent liquid and/or gas from entering the liquid-taking capsule.

FIG. 1 is a schematic cross-sectional structure diagram of the liquid-taking capsule provided by the first embodiment of the present invention, and FIG. 2 is a system block diagram of the liquid-taking capsule provided by the first embodiment of the present invention. As shown in FIG. 1 and FIG. 2 , the liquid taking capsule provided by the present invention includes a capsule housing 10, a wireless transmission module 30, a triggering device 40 and a processing module 50. The wireless transmission module 30, the triggering device 40 and the processing module 50 are all provided with in the capsule shell 10 . The capsule shell 10 is formed with a first accommodating portion 11, and a liquid inlet 111 is formed on the side wall of the first accommodating portion 11. In this embodiment, the liquid inlet 111 is formed on the capsule shell 10. The opening 111 is blocked with a sealing elastic sheet 112 , and the sealing elastic sheet 112 is arranged on the inner side of the capsule housing 10 . The wireless transmission module 30 receives the external liquid taking command and transmits the liquid taking command to the processing module 50 . The processing module 50 controls the trigger device 40 to perform a liquid taking operation according to the liquid taking command. The triggering device 40 reduces the air pressure in the first accommodating part 11 to form a pressure difference between the first accommodating part 11 and the environment outside the cavity. The force of the pressure difference acting on the sealing elastic sheet 112 and the pre-tightening force of the sealing elastic sheet 112 work together to push the sealing elastic sheet 112 away, and open the liquid inlet 111, so that the liquid in the cavity enters the first accommodating portion 11, and the interior is completed. of liquid. Wherein, the wireless transmission module 30 and the processing module 50 and the like may be integrated on the same circuit board 70, or may be provided separately on different circuit boards.

It is worth mentioning that, in the embodiment of the present application, electrical components such as the position detection module 20 , the wireless transmission module 30 , the trigger device 40 and the processing module 50 are arranged in the capsule housing 10 . The components work normally after the liquid extraction is completed, and the electrical components in the capsule housing 10 can be insulated, so that the electrical components work normally in an environment where liquid exists. Among them, the insulating treatment can be Parylene treatment or the like, that is, a thin film or coating is formed on the surface of the electrical components, so as to protect the electrical components.

In this embodiment, the presence of the sealing elastic sheet 112 prevents the liquid and/or gas in the cavity environment from entering the first accommodating portion 11 when the liquid extraction is not started. Specifically, the sealing elastic sheet 112 has a pre-tightening force from the inside of the first accommodating portion 11 toward the liquid inlet 111 . ) and will not be lower than the force exerted on the sealing elastic sheet 112 by the external air pressure, and the sealing elastic sheet 112 will closely adhere to the side wall of the capsule shell 10 around the liquid inlet 111 , thereby forming a seal at the liquid inlet 111 .

When the liquid-taking capsule reaches the liquid-taking position (which may be a predetermined position calculated according to time, or an accurate position observed in real time), the external control module will send a liquid-taking command to the liquid-taking capsule through the wireless transmission module 30 . The processing module 10 reduces the air pressure in the first accommodating part 11 through the triggering device 40 , so that the pressure in the first accommodating part 11 is lower than the external pressure. At this time, a pressure difference is formed inside and outside the first accommodating portion 11 , and the pressure difference can generate a pressing force on the sealing elastic sheet 112 , so that the sealing elastic sheet 112 is separated from the liquid inlet 111 , and the liquid in the cavity can enter the first accommodating portion 11 . . As the liquid enters the first accommodating portion 11, the pressure difference between the inside and outside of the first accommodating portion 11 gradually decreases. When the force of the pressure difference acting on the sealing elastic sheet 112 is smaller than the pre-tightening force of the sealing elastic sheet 112 itself, the sealing elastic sheet 112 can be reset. Close the liquid inlet 111.

During the process of the liquid taking capsule being discharged from the cavity (after the liquid taking is completed), the sealing elastic sheet 112 will resist the pressure of the cavity environment through its own pre-tightening force, and then keep the liquid inlet 111 sealed. After the liquid taking capsule moves to other positions , the liquid in other positions will not enter the liquid extraction capsule again, preventing the liquid in different positions from mixing. That is, after the liquid-taking capsule reaches a predetermined position in the cavity, the liquid-taking operation can be performed relatively easily and accurately at the position. It should be noted that, in this embodiment, the cavity environment may be a gas environment, a liquid environment, or the like.

Further, the capsule housing 10 is further formed with a second accommodating part 12 , and a diaphragm 13 is formed between the second accommodating part 12 and the first accommodating part 11 . Wherein, the diaphragm 13 is used to separate the first accommodating portion 12 and the second accommodating portion 11 . In this embodiment, the edge of the diaphragm 13 is fixedly connected to the inner wall of the capsule housing 10 , and the diaphragm 13 can prevent the air in the first accommodating part 11 from communicating with the air in the second accommodating part 12 .

When the liquid taking operation is not performed, the air pressure of the second accommodating part 12 is lower than the pressure of the cavity environment, and the average air pressure of the second accommodating part 12 and the first accommodating part 11 is the same (that is, the second accommodating part 12 and the first accommodating part 11) is lower than the pressure of the cavity environment, the trigger device 40 communicates the second accommodating part 12 and the first accommodating part 11 after receiving the liquid taking command, so that the first accommodating part 11 and the second accommodating part 12 The air pressure in the entire capsule shell 10 (ie, the entire capsule shell 10 ) is less than the pressure of the cavity environment, thereby forming a pressure difference with the cavity environment where the capsule shell 10 is located, pushing the sealing elastic sheet 112 to open the liquid inlet 111 . That is to say, the liquid in the cavity environment of the cavity pushes the sealing elastic sheet 112, so that the first accommodating part 11 and the cavity environment are connected through the liquid inlet 111, so that the liquid can flow from the outside of the capsule shell 10 through the liquid inlet under the action of pressure 111 enters the first accommodating part 11 to achieve the effect of collecting liquid.

That is, in this embodiment, the triggering device 40 balances the gas pressures in the first accommodating portion 11 and the second accommodating portion 12 , so that the force exerted on the sealing elastic sheet 112 in the capsule housing 10 is reduced. Preferably, when the liquid taking operation is not performed, the air pressure in the first accommodating portion 11 is greater than the pressure given to the sealing elastic sheet 112 by the cavity environment, so as to ensure that the sealing elastic sheet 112 has better sealing performance when the liquid extraction operation is not performed.

It is worth mentioning that, in other embodiments of the present application, when the liquid taking operation is not performed, the air pressure in the first accommodating portion 11 may also be less than or equal to the pressure in the cavity. At this time, the sum of the pressure acting on the sealing elastic sheet 112 by the first accommodating portion 11 and the pre-tightening force of the sealing elastic sheet 112 itself is greater than the pressure acting on the sealing elastic sheet 112 by the cavity environment. Accordingly, it is ensured that the sealing elastic sheet 112 seals the first accommodating portion 11 well when the liquid taking operation is not performed.

A first through hole 14 and a second through hole 15 are formed on the side walls of the second accommodating portion 12 and the first accommodating portion 11 respectively, and sealing plugs ( not shown). In the preparation stage for taking the liquid, the air in the second accommodating part 12 can be extracted through the second through hole 15, and at the same time, the first accommodating part 11 can be pressurized through the first through hole 14, so as to satisfy the requirements of the second accommodating part 12 and the first accommodating part 11. The first through hole 14 and the second through hole 15 are sealed by the sealing plug. In some embodiments, gas is pre-stored in the first accommodating part 11 , including but not limited to air, nitrogen or noble gas inert gas and other gases that can adjust the pressure without harming the human body, and the second accommodating part 12 can be pre-formed as negative pressure state.

In addition, the liquid-taking capsule of the present application is also provided with a magnetic member (not shown). Specifically, the magnetic member is disposed in the capsule housing 10 and can be made of ferromagnetic materials such as rubidium magnets, and is used to drive the liquid-taking capsule to move and change the posture of the liquid-taking capsule under the control of an external magnet.

In the embodiment of the present application, the trigger device 40 includes a fixed seat 41 , a solid hot melt 42 that can be melted after heating, a heating wire 43 and a trigger element, wherein the trigger element can act on the diaphragm 13 to change the first accommodating portion 11 pressure within. Preferably, in order to adapt to a narrow space structure such as a capsule, the trigger member may be an elastic member 44 that is simple in structure and suitable for installation, such as an elastic member.

In an embodiment of the present application, the trigger element is an elastic element 44 with a needle body. Referring to FIG. 1 , the trigger device 40 includes a fixing base 41 , a solid hot melt 42 that can be melted after heating, a heating wire 43 and an elastic member 44 . The solid hot melt 42 is disposed in the fixing seat 41 . The heating wire 43 is in contact with the solid hot melt 42 , preferably the heating wire 43 is at least partially sealed within the solid hot melt 42 . The elastic member 44 is sealed in the solid hot melt 42, and the elastic member 44 is in a compressed state, and the elastic recovery direction of the elastic member 44 is set toward the diaphragm 13 (or the elastic member 44 can be in contact with the diaphragm 13 during the elastic recovery process). A needle body (not shown) is provided at one end of the elastic member 44 facing the diaphragm 13 , and the heating wire 43 is electrically connected to the processing module 50 . When the processing module 50 receives the liquid taking command, the heating wire 43 is controlled to heat the solid hot melt 42. After the solid hot melt 42 is melted, the elastic member 44 recovers under the action of its own deformation, and drives the needle to pierce the diaphragm. 13. Make the second accommodating part 12 communicate with the first accommodating part 11, so as to reduce the air pressure in the first accommodating part 11. Wherein, the needle body can be fixedly installed on the end of the elastic member 44 close to the septum 13 through the connecting piece, and the sharp end of the needle body faces the septum 13 . In other embodiments, the needle body can also be integrally formed with the elastic member 44 .

In the present embodiment, the triggering device 40 is arranged in the first accommodating part 11 . It is understood that the triggering device 40 can also be arranged in the second accommodating part 12 . As long as the elastic member 44 can be released after the solid hot melt 42 is melted, the elastic member 44 drives the needle body to puncture the septum 13 , so that the second accommodating portion 12 communicates with the first accommodating portion 11 .

In this embodiment, the melting point of the solid hot melt 42 may be 45°C-55°C. Preferably, the solid hot melt 42 may be paraffin. It is worth mentioning that for the human body, the safety threshold of temperature is 55°C to 60°C, and the temperature below this range will not cause harm to the human body. In the present application, the melting point of the solid hot melt 42 meets the above requirements, so the liquid-taking capsule provided in the present application has high safety and reliability.

Further, in this embodiment, the liquid taking capsule further includes a position detection module 20 . The position detection module 20 detects the real-time position of the liquid taking capsule and transmits the position signal to the processing module 50 . The processing module 50 transmits the position signal through the wireless transmission module 30 . The control module obtains the exact position of the liquid-taking capsule according to the signal. The position detection module 20 may be an optical imaging system, and a transparent layer is formed on the portion of the capsule housing 10 corresponding to the lens of the optical imaging system to ensure that the optical imaging system is not blocked. Preferably, in some embodiments, the above-mentioned liquid inlet 111 is located outside the shooting angle of view (not shown in the figure) of the lens of the optical imaging system.

Further, as shown in FIG. 2 , a power supply module 60 is also provided in the capsule housing 10 to supply power to the position detection module 20 , the processing module 50 , the trigger device 40 and the wireless transmission module 30 . In this embodiment, the position detection module 20 , the processing module 50 and the wireless transmission module 30 are disposed in the first accommodating portion 11 . It can be understood that the above modules can also be arranged in the second accommodating portion 12 .

In this embodiment, the liquid inlet 111 is further provided with a sealing member (not shown) to facilitate the sealing between the liquid inlet 111 and the sealing elastic sheet 112 . In this embodiment, the sealing member may be a sealing sheet or a backflow prevention valve, so as to prevent the liquid entering the first accommodating portion 11 from flowing back out of the first accommodating portion.

In this embodiment, a liquid absorbing device (not shown), such as a sponge, is also provided in the first accommodating part 11 , so as to facilitate the absorption and preservation of the liquid entering the first accommodating part 11 . In some embodiments, the liquid absorbing device may be filled in the first container 11 . In other embodiments, the capsule housing 10 is provided with a position detection module 20 or an image capture device (not shown), and the liquid absorption device is disposed outside the viewing angle of the position detection module 20 or the image capture device, so as to ensure the position The detection module 20 or the image capture device operates normally.

FIG. 3 is a schematic structural diagram of a liquid-taking capsule triggering device and a diaphragm according to a second embodiment of the present invention. FIG. 3 shows a schematic structural diagram of the solid hot melt 42 when it is not melted. As a modification of the above embodiment, in the second embodiment of the present invention, the diaphragm 13 is provided with a communication hole 46 connecting the first accommodating portion 11 and the second accommodating portion 12 , and a solid hot melt is blocked in the communication hole 46 object 42 , the heating wire 43 is in contact with the solid hot melt 42 and is connected to the processing module 50 . After the processing module 50 receives the liquid taking command, the heating wire 43 is controlled to start heating, so that the solid hot melt 42 is melted, and the two sides of the diaphragm 13 are connected, so that the air pressure in the first accommodating part 11 is reduced, so that the cavity The liquid in the environment can push the sealing elastic sheet 112 away and enter the first accommodating part 11 . In FIG. 3 , the heating wire 43 is located on the side wall of the solid hot melt 42 facing the first accommodating portion 11 ; and in another embodiment, the heating wire 43 may be arranged on the solid hot melt 42 facing the second On the side wall of one side of the accommodating portion 12; in another embodiment, the heating wire 43 can also be disposed in the solid hot melt, and is electrically connected to the processing module 50 and/or the power module 60, which is no longer described here. Repeat.

FIG. 4 is a schematic structural diagram of the liquid-taking capsule triggering device and the diaphragm 13 according to the third embodiment of the present invention. FIG. 4 shows a schematic view of the structure after the solid hot melt 42 is melted and the elastic member 44 is recovered. As shown in FIG. 4 , in the third embodiment of the present invention, similar to the first embodiment, the trigger device 40 also includes a fixed seat 41 , a solid hot melt 42 , a heating wire 43 and an elastic member 44 (ie, a trigger member 44 ). ). The solid hot melt 42 is disposed in the fixed seat 41 , the heating wire 43 is in contact with the solid hot melt 42 , and the elastic member 44 is sealed in the solid hot melt 42 . In this embodiment, the triggering device 40 is disposed in the first accommodating portion 11 , the elastic member 44 is in a compressed state, the elastic recovery direction of the elastic member 44 is disposed toward the diaphragm 13 , and the heating wire 43 is electrically connected to the processing module 50 . The difference is that when the processing module 50 receives the liquid taking command, the heating wire 43 is controlled to heat the solid hot melt 42 to release the elastic member 44, and the elastic member 44 pushes the diaphragm 13 to move toward the second accommodating portion 12, In order to increase the volume of the first accommodating part 11 . In this embodiment, the diaphragm 13 is an elastic member, and can be deformed under the action of the elastic member 44 to adjust the volume of the first accommodating part 11 and the second accommodating part 12 , thereby changing the air pressure in the first accommodating part 11 .

In this embodiment, since the volume of the first accommodating portion 11 is increased, when the first accommodating portion 11 is sealed, the air pressure in the first accommodating portion 11 will decrease to form a pressure difference with the cavity environment.

It can be understood that, in this embodiment, the air pressure in the second accommodating portion 12 may no longer be limited.

In the third embodiment, the triggering device 40 is located in the first accommodating portion 11. In order to enable the diaphragm 13 to move toward the second accommodating portion 12, the elastic member 44 should extend from the compressed state. Therefore, the elastic member 44 is in a solid state. The inside of the hot melt 42 needs to be in a compressed state.

As a modification of the above embodiment, the triggering device 40 can be located in the second accommodating portion 12 . At this time, the end of the elastic member 44 needs to be connected to the diaphragm 13 , and the elastic member 44 needs to be in a stretched state in the solid hot melt 42 . , after the solid hot melt 42 is melted, the elastic member 44 is released, and the elastic member 44 recovers, so as to pull the diaphragm 13 to move toward the second accommodating portion 12 .

In other embodiments of the present application, the diaphragm 13 may also be a piston sliding along the inner wall of the capsule housing 10 . Further, a sealing ring or the like is provided between the piston and the capsule housing 10 to prevent the gas in the first accommodating part 11 from flowing into the second accommodating part 12 . Wherein, the trigger member may be an elastic member 44 which is connected to the diaphragm 13 and controls the stop or movement of the diaphragm 13 .

To sum up, in the present invention, the triggering device 40 is provided to form a pressure difference inside and outside the first accommodating portion 11, so that the sealing elastic sheet 112 opens the liquid inlet 111, and the liquid can be taken. After the liquid extraction is completed, since there is no air pressure difference, or the air pressure difference is reduced, the sealing elastic sheet 112 can close the liquid inlet 111 again, and prevent the liquid in the cavity from entering again. After the liquid-taking capsule reaches a predetermined position in the cavity, the liquid-taking operation can be performed at the position relatively easily and accurately.

FIG. 5 is a system block diagram of a liquid taking system provided by an embodiment of the present invention. As shown in FIG. 5, the present invention also provides a liquid taking system, the liquid taking system includes the above-mentioned liquid taking capsule and a control module 80, the control module 80 receives the position signal sent by the wireless transmission module 30 in the liquid taking capsule, and A liquid taking command is sent to the wireless transmission module 30 of the liquid taking capsule, so that the liquid taking capsule completes taking liquid.

The invention also provides a liquid taking method. The method includes: after determining that the liquid taking capsule reaches the liquid taking position in the cavity, the control module sends a liquid taking command to the liquid taking capsule;

The wireless transmission module of the liquid-taking capsule receives the liquid-taking command, and sends the liquid-taking command to the processing module;

The processing module controls the trigger device to reduce the air pressure of the first accommodating part until the air pressure of the first accommodating part is less than the pressure of the cavity environment, and a pressure difference is formed inside and outside the first accommodating part;

The sealing shrapnel is separated from the liquid inlet under the action of the pressure difference to open the liquid inlet, so that the first accommodating part is communicated with the cavity environment through the liquid inlet.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. The technical personnel, within the scope of the technical solution of the present invention, can make some changes or modifications by using the technical content disclosed above to be equivalent embodiments of equivalent changes, provided that they do not depart from the technical solution content of the present invention, according to the technical solution of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solutions of the present invention.

Claims (13)

1. A liquid-taking capsule, characterized in that: comprising a capsule housing, a wireless transmission module, a triggering device and a processing module, and the wireless transmission module, the triggering device and the processing module are all arranged in the capsule housing , the capsule shell is formed with a first accommodating part, a liquid inlet is formed on the side wall of the first accommodating part, a sealing elastic sheet is blocked at the liquid inlet, and the wireless transmission module receives the external and transmits the command to the processing module, the processing module controls the trigger device to perform the liquid taking operation according to the liquid taking command, and the trigger device reduces the air pressure in the first accommodating part, so that all A pressure difference is formed between the first accommodating part and the cavity environment, and the pressure difference pushes the sealing elastic sheet to open the liquid inlet, so that the first accommodating part is communicated with the cavity environment. 2 . The liquid taking capsule according to claim 1 , wherein the capsule shell is further formed with a second accommodating part, and a diaphragm is arranged between the first accommodating part and the second accommodating part, so that the The diaphragm separates the first accommodating part and the second accommodating part; when liquid extraction is not performed, the air pressure of the second accommodating part and the average air pressure of the first accommodating part and the second accommodating part are the same. is lower than the air pressure in the cavity, the trigger device communicates with the second accommodating part and the first accommodating part after receiving the liquid taking command, so that the pressure of the first accommodating part is lower than that of the cavity environment pressure. 3. The liquid extraction capsule according to claim 2, wherein the triggering device comprises a fixed seat, a solid hot melt that is heated and melted, a heating wire and an elastic member; the solid hot melt is arranged on the fixed In the seat, the heating wire is electrically connected with the processing module; the elastic member is fixed in the solid hot melt, and the elastic member is in a compressed state, and the elastic recovery direction of the elastic member is toward the The diaphragm is arranged; a needle is arranged at the end of the elastic member facing the diaphragm, and when the processing module receives the liquid taking command, the heating wire is controlled to heat the solid hot melt, and the solid heat After the melt is melted, the elastic member recovers and drives the needle body to pierce the diaphragm, so that the first accommodating portion communicates with the second accommodating portion. 4. The liquid-taking capsule according to claim 2, wherein the triggering device comprises a solid-state hot-melt that is heated and melted and a heating wire that contacts the solid-state hot-melt; A communication hole between an accommodating part and the second accommodating part, the solid hot melt is sealed in the communication hole, the heating wire is electrically connected to the processing module, and the processing module is connected to the liquid sampling After the command, the heating wire is controlled to heat the solid hot melt, the solid hot melt is melted, and the first accommodating portion is communicated with the second accommodating portion. 5 . The liquid taking capsule according to claim 1 , wherein a second accommodating part is further formed in the capsule shell, and a diaphragm is arranged between the first accommodating part and the second accommodating part, so that the The trigger device includes a fixed seat, a solid hot melt heated and melted, a heating wire and an elastic member, the solid hot melt is arranged in the fixed seat, the heating wire is electrically connected with the processing module, and the heating wire is electrically connected to the processing module. The elastic member is in a deformed state and is sealed in the solid hot melt. When the processing module receives the liquid taking command, it controls the heating wire to heat the solid hot melt. After the solid hot melt is melted , the elastic member recovers and drives the diaphragm to expand the volume in the first accommodating part. 6 . The liquid-taking capsule according to claim 5 , wherein the triggering device is disposed in the first accommodating portion, and the elastic member is in a compressed state and sealed in the solid hot melt. 7 . 7 . The liquid taking capsule according to claim 5 , wherein the triggering device is arranged in the second accommodating portion, the elastic member is connected to the diaphragm, and the elastic member is in a stretched state and fixed. 8 . enclosed in the solid hot melt. 8 . The liquid extraction capsule according to claim 3 , wherein the melting point of the solid hot melt is 45° C.-55° C. 9 . 9. The liquid-taking capsule according to any one of claims 3-7, wherein the solid hot melt is paraffin. 10. The liquid-taking capsule according to claim 1, characterized in that: the liquid-taking capsule is further provided with a position detection module, and the position detection module is an optical imaging system, which is connected to the capsule shell on the capsule shell. The part corresponding to the lens of the optical imaging system is formed with a transparent layer; preferably, the liquid inlet is located outside the shooting angle of the lens. 11. The liquid taking capsule according to claim 1 or 10, characterized in that: a liquid absorption device is further arranged in the first accommodating part. 12. A liquid taking system, characterized in that: comprising the liquid taking capsule described in any one of claims 1-11, and a control module, the control module receives a position signal sent by the liquid taking capsule, and sends the The liquid-taking capsule sends a liquid-taking command. 13. A method for taking liquid from capsules, characterized in that: The liquid-taking capsule according to any one of claims 1-11 reaches the liquid-taking position, and the control module sends a liquid-taking command to the liquid-taking capsule; The wireless transmission module of the liquid-taking capsule receives the liquid-taking command, and sends the liquid-taking command to the processing module; The processing module controls the trigger device to reduce the air pressure of the first accommodating part until the air pressure of the first accommodating part is lower than the pressure of the cavity environment, so as to form a pressure difference; The sealing elastic sheet is separated from the liquid inlet under the action of the pressure difference to open the liquid inlet, so that the first accommodating portion is communicated with the cavity environment through the liquid inlet.

Images