CN214762471U

CN214762471U - Body fluid drainage device

Info

Publication number: CN214762471U
Application number: CN202023350644.3U
Authority: CN
Inventors: 江千里; 姚巧睿; 吕愉芳; 陈启燕; 马炳荣; 王元美; 王正源; 谢燕辞; 刘慧滢; 陈全凤; 龚意雯
Original assignee: Suzhou Minglie Membrane Material Co ltd
Current assignee: Suzhou Minglie Membrane Material Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-11-19
Anticipated expiration: 2030-12-31

Abstract

The utility model provides a body fluid drainage device, which comprises a drainage tube, a fluid collection part and a cell enrichment part, wherein the drainage tube is used for the circulation of body fluid; the cell enrichment part is arranged on the drainage tube; the cell enrichment member has magnetism to magnetically attract and collect magnetized cells in the body fluid flowing through the cell enrichment member. The body fluid drainage device can be used for leading out and collecting body fluid and simultaneously can be used for timely and effectively enriching the cast-off cells, so that the cells can be sampled, detected and analyzed in time, the enriched cells can be used for detecting related cytology, molecular science and the like, and effective data is provided for clinical diagnosis and treatment of diseases and prognosis improvement of the diseases. In addition, the collected cells can be cultured and stored in vitro, which has important significance for the diagnosis of primary diseases, the individual screening of sensitive medicines, the selection of optimal treatment schemes and other researches.

Description

Body fluid drainage device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a body fluid drainage device.

Background

Drainage is the means of drawing fluid from a body cavity (e.g., chest, abdomen, etc.) or wound by suction or gravity, and common drainage fluids include ascites, pleural fluid, cerebrospinal fluid, and the like.

In clinical practice, for ascites drainage operation, placing an abdominal drainage tube for drainage is an important means for preventing and treating postoperative complications after abdominal surgery and treating partial abdominal diseases in internal medicine. In the above operation process, there is often a case that cells fall off into body cavities such as the abdominal cavity, and if the cells are tumor cells, the tumor cells may be planted and spread in the abdominal cavity, causing the diffusion of the tumor or the long-term recurrence. Therefore, the accumulated liquid in the abdominal cavity is drained in time, and the cast-off cells in the drainage liquid are accurately captured and enriched, thereby having important clinical significance for diagnosis, treatment and prognosis of primary diseases.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a body fluid drainage device, when drainage goes out the body fluid, can also enrich the cell in the drainage liquid to realize follow-up monitoring and culture amplification high-efficiently.

In order to achieve the above object, the present invention provides a body fluid drainage device, which comprises a drainage tube, a fluid collection part and a cell enrichment part, wherein the drainage tube is used for body fluid to circulate, and two ends of the drainage tube are respectively an inlet end and an outlet end; the liquid collecting piece is communicated with the outlet end of the drainage tube, and the liquid collecting piece is used for collecting body fluid; the cell enrichment part is arranged on the drainage tube; the cell enrichment member has magnetism so as to magnetically adsorb and collect magnetized cells in the body fluid flowing through the cell enrichment member.

Optionally, the cell-enriching member includes a spherical magnetic bead disposed inside the drain tube and disposed on a flow path of the body fluid.

Optionally, the cell enrichment member further comprises a shell, the shell is coated on the outer surface of the magnetic bead, and the shape of the shell is matched with the shape of the magnetic bead.

Optionally, the shell is made of a biocompatible polymeric material.

Optionally, the position of the drainage tube corresponding to the magnetic beads is an accommodating area, and the part of the drainage tube outside the accommodating area is a non-accommodating area; the outer surface of the drainage tube at the accommodating area protrudes outwards from the outer surface of the drainage tube at the non-accommodating area, and the outer diameter of the cell enrichment part is larger than the inner diameter of the drainage tube at the non-accommodating area.

Optionally, the inner surface of the drainage tube at the accommodation area is an arc-shaped surface.

Optionally, a taking and placing opening is formed in the drainage tube at the accommodating area, and a taking and placing cover is arranged at the taking and placing opening to open or close the taking and placing opening.

Optionally, the cell enrichment member is an air bag accommodated inside the inlet end of the drainage tube, and the surface of the air bag is provided with magnetic micro-magnet particles; the body fluid drainage device further comprises an inflation tube which is communicated with the air bag and is arranged outside the drainage tube so as to enable the air bag to expand to extend out of the inlet end of the drainage tube by inflating or filling the inflation tube.

Optionally, the balloon is an umbrella in an inflated state, an outer surface of the umbrella facing the inlet end of the drainage tube.

Optionally, the gasbag includes the gasbag main part, set up in gasbag main part surface and with the inside a plurality of umbrella face pipes that communicate of gasbag main part and with the gasbag main part is fixed and with the umbrella face pipe intercommunication umbrella stalk pipe, umbrella stalk pipe with the gas tube intercommunication.

Optionally, the inner surface of the umbrella structure is provided with the micro-magnet particles.

Optionally, the body fluid drainage device further comprises a photoelectric detection unit disposed on the drainage tube, the photoelectric detection unit being closer to the outlet end than the cell enrichment member; the photoelectric detection unit is used for detecting the light transmittance of the surface of the cell enrichment piece.

Optionally, the body fluid drainage device further comprises a flow meter arranged on the drainage tube and an alarm electrically connected with the flow meter, wherein the flow meter is arranged near the outlet end and is positioned on a flow path of the body fluid; the flow meter is used for detecting the flow of the body fluid in the drainage tube so as to transmit a flow signal to the alarm to control the alarm to alarm.

Optionally, the body fluid drainage device further comprises a three-way connector, the three-way connector has three connecting ports, two of the three connecting ports are respectively communicated with the outlet end of the drainage tube and the liquid collecting part, and the other connecting port is used for externally connecting an injector or a negative pressure suction device.

Optionally, the body fluid drainage device further comprises a flow rate controller, the flow rate controller is disposed on the drainage tube and is close to the inlet end, and the flow rate controller is used for controlling the flow rate of the body fluid in the drainage tube.

Optionally, the liquid collecting part comprises a drainage bag, a suspension rope arranged at the top of the drainage bag and a liquid discharge valve arranged at the bottom of the drainage bag, and the drainage bag is used for collecting body fluid.

According to the above technical scheme, the beneficial effects of the utility model are that:

the utility model discloses a body fluid drainage device can also carry out timely effectual enrichment to the cell that drops in the body fluid that the drainage goes out when drawing forth and collecting the body fluid to be convenient for the cell can in time be taken a sample, detected and the analysis, and the cell of enrichment can be used to carry out the detection in aspects such as relevant cytology and molecular, provides effectual data for the clinical diagnosis of disease and the prognosis of improving the disease. In addition, the collected cells can be cultured and stored in vitro, which has important significance for the diagnosis of primary diseases, the individual screening of sensitive medicines, the selection of optimal treatment schemes and other researches.

Drawings

FIG. 1 is a schematic view of an embodiment of the body fluid drainage device of the present invention;

FIG. 2 is an enlarged view of a portion of the body fluid drainage device shown in FIG. 1 at A;

FIG. 3 is a schematic structural view of another embodiment of the body fluid drainage device of the present invention;

FIG. 4 is an enlarged partial view of the body fluid drainage device of FIG. 3 at B;

FIG. 5 is a schematic view of the expanded state of the cell-enriching member in the body fluid drainage device shown in FIG. 3.

The reference numerals are explained below: 100. a body fluid drainage device; 10. a drainage tube; 11. an inlet end; 12. an outlet end; 13. an accommodating area; 14. a non-accommodation area; 15. a taking and placing port; 16. a taking and placing cover; 20. a liquid collecting member; 21. a drainage bag; 22. a suspension cord; 23. a tapping valve; 30. a cell enrichment member; 31. magnetic beads; 32. a housing; 34. an airbag main body; 35. an umbrella surface tube; 40. a photodetecting unit; 50. a flow meter; 60. an alarm; 70. a flow rate controller; 80. a three-way connector; 90. and an inflation tube.

Detailed Description

Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

For further explanation of the principles and construction of the present invention, reference will now be made in detail to the preferred embodiments of the present invention, which are illustrated in the accompanying drawings.

The present application provides a body fluid drainage device 100, the body fluid drainage device 100 includes a drainage tube 10, a liquid collecting member 20 and a cell enriching member 30.

The drainage tube 10 is a transparent soft silicone tube for body fluid to flow through, and the two ends of the drainage tube 10 are respectively an inlet end 11 and an outlet end 12. A liquid trap 20 is in communication with the outlet end 12 of the drain tube 10, the interior of the liquid trap 20 being for collecting body fluids. The cell enrichment member 30 is disposed on the drainage tube 10, and the cell enrichment member 30 has magnetism to magnetically attract and collect magnetized cells in the body fluid flowing through the cell enrichment member 30.

With the body fluid drainage device 100 of the present application, it is necessary to first magnetize the cells. Specifically, a cell magnetization reagent, such as a tumor cell specific antibody-bound nano magnetic bead, a magnetic nanoparticle specifically bound to a cell, a clinically usable nuclear magnetic resonance contrast agent phenanthrene magnetic field, or the like, may be added to the drained ascites, pleural fluid, or cerebrospinal fluid, or the body cavity after the operation is completed. Such agents can bind to cells that are shed in body fluids, thereby magnetizing the cells without interfering with the inherent biological properties of the cells.

The body fluid drainage device 100 of the application can also timely and effectively enrich the exfoliated cells in the drained body fluid while leading out and collecting the body fluid, so that the cells can be timely sampled, detected and analyzed, the enriched cells can be used for detecting related cytology, molecular science and the like, and effective data is provided for clinical diagnosis and treatment of diseases and prognosis improvement of the diseases.

In addition, the collected cells can be cultured and stored in vitro, which has important significance for the diagnosis of primary diseases, the individual screening of sensitive medicines, the selection of optimal treatment schemes and other researches.

Referring to fig. 1 and 2, an embodiment of the present application provides a body fluid drainage device 100, in which a cell enrichment member 30 of the body fluid drainage device 100 includes a spherical magnetic bead 31 and a shell 32 coated on an outer surface of the magnetic bead 31.

The shape of the housing 32 is adapted to the shape of the magnetic beads 31, and is spherical. The magnetic beads 31 are provided inside the drain tube 10 together with the housing 32 and are arranged on the flow path of the body fluid. In the present embodiment, the magnetic beads 31 have a permanent magnet core and have a magnetic adsorption capability. The shell 32 is made of a biocompatible polymer material to enhance the safety and applicability of the cell-enriched component 30.

The cell enrichment member 30 of the present embodiment is disposed inside the drainage tube 10, and when the body fluid enters the drainage tube 10 and flows through the cell enrichment member 30, the magnetic beads 31 inside the housing 32 can capture the magnetized cells in the body fluid by magnetic force, so that the magnetized cells are adsorbed on the housing 32, so that the magnetized cells are enriched on the surface of the cell enrichment member 30.

Further, the drainage tube 10 is disposed in the containing region 13 corresponding to the magnetic bead 31, and the portion of the drainage tube 10 outside the containing region 13 is the non-containing region 1413. In the present embodiment, the outer surface of the drainage tube 10 at the accommodating area 13 protrudes outward from the outer surface of the drainage tube 10 at the non-accommodating area 1413, that is, the outer wall of the drainage tube 10 at the accommodating area 13 is convex.

The cell enrichment member 30 is disposed in the accommodation region 13 of the drainage tube 10, and the outer diameter of the cell enrichment member 30 of the present embodiment, i.e., the outer diameter of the housing 32, is larger than the inner diameter of the drainage tube 10 at the non-accommodation region 1413. When the body fluid flows through the interior of the drain tube 10, the cell-enriching member 30 rolls in the receiving area 13 with the flow of the body fluid. Since the outer diameter of the housing 32 is larger than the inner diameter of the drainage tube 10 at the non-accommodation region 1413, the cell enrichment member 30 can only move in the accommodation region 13 and can not enter the non-accommodation region 1413 of the drainage tube 10, thereby ensuring the efficient collection of cells in the body fluid by the cell enrichment member 30.

The inner surface of draft tube 10 at receiving area 13 is curved in this embodiment. The curved inner surface is adapted to the bulbous outer shell 32 to allow the cell enrichment member 30 to roll more stably within the containment region 13 for effective contact with body fluids within the drain tube 10.

In this embodiment, the drainage tube 10 in the accommodation area 13 is provided with an access opening 15. The access opening 15 is provided with an access cover 16 for opening or closing the access opening 15. By opening the cover 16, the medical personnel can directly take out the cell-enriched component 30 from the access opening 15, thereby avoiding cutting the drainage tube 10 and damaging the drainage tube 10.

After the cell collection of the cell enrichment part 30 is finished, the medical staff can open the taking and placing cover 16, take out the magnetic beads 31 with the shell 32 from the taking and placing port 15 on the drainage tube 10, and then collect the cells on the surface of the shell 32.

Further, the body fluid drainage device 100 of the present embodiment further includes a photodetecting unit 40. The photodetecting unit 40 is disposed on the drain tube 10, and the photodetecting unit 40 is closer to the outlet end 12 of the drain tube 10 than the position where the cell enrichment member 30 is disposed on the drain tube 10.

The photoelectric detection unit 40 is made of an optical fiber material and is used for detecting the transmittance of the surface of the cell-enriched member 30. When the cell enrichment member 30 does not adsorb cells, the cell enrichment member 30 is in the original color under the irradiation of the external light, and the transmittance detected by the photoelectric detection unit 40 is the maximum.

As the cells accumulate on the surface of the cell-enriching member 30, the transmittance of the light detected by the photodetecting unit 40 gradually decreases as the number of cells increases. The photoelectric detection unit 40 can judge the number or density of the aggregated cells on the surface of the cell enrichment member 30 through the change of the transmittance, and synthesize related images, videos or data so as to provide medical personnel to judge and analyze in real time and know the information of the captured cells in time.

For the photodetecting unit 40 of this embodiment, an alarm can be independently configured, and the alarm is electrically connected to the photodetecting unit 40, and the alarm can perform early warning according to the transmittance value detected by the photodetecting unit 40. Specifically, the photoelectric detection unit 40 is used for detecting the transmittance of the surface of the cell-enriched member 30, so as to transmit a transmittance signal to the alarm to control the alarm to alarm.

Specifically, a threshold value of the transmittance of the alarm is set, and when the transmittance reaches the threshold value, it indicates that the number of cells collected on the cell enrichment member 30 has reached the set limit. During the circulation of the body fluid in the drainage tube 10, more and more cells are gathered on the cell-enriched component 30, and the transmittance value of the cell-enriched component 30 detected by the photoelectric detection unit 40 changes continuously. When the transmittance reaches a critical value, a large number of cells have accumulated on the cell-enriching member 30, the photoelectric detection unit 40 transmits a detection signal to the alarm, and the alarm gives an alarm accordingly.

The medical staff can take out the cell-enriched component 30 with a large amount of cells accumulated in the drainage tube 10 in time according to the alarm of the alarm, check the cell-enriched component 30 and replace the cell-enriched component 30 with a new one. Or the drainage tube 10 is replaced in time to avoid the internal blockage of the drainage tube 10, and the drainage tube 10 carrying the cell enrichment member 30 is inspected.

Further, the body fluid drainage device 100 of the present embodiment further includes a flow meter 50 and an alarm 60. Wherein, flowmeter 50 sets up on drainage tube 10, and alarm 60 is connected with flowmeter 50 electricity.

In this embodiment, flow meter 50 is disposed proximate to outlet end 12 of drain tube 10 and downstream of cell enrichment member 30. The flow meter 50 is located in the flow path of the body fluid for detecting the flow rate of the body fluid in the drain tube 10. The flow meter 50 of the present embodiment incorporates a control chip, and the control chip is electrically connected to the alarm 60.

When the flow rate of the body fluid flowing through the drainage tube 10 exceeds the critical value set by the flow meter 50, the flow meter 50 can transmit the flow signal to the control chip, and the control chip can transmit the signal to the alarm 60 and send out the early warning signal in time.

During the detection process of the flow meter 50, the medical staff can monitor the drainage speed and the flow of the drainage tube 10 in real time and control the flow of the drainage tube 10 in a targeted manner. Through the early warning signal that alarm 60 sent, medical personnel can in time change album liquid spare 20 to improve the security of body fluid drainage, realize the treatment of becoming more meticulous of disease.

With the body fluid drainage device 100 of the present embodiment, the photodetecting unit 40 and the flow meter 50 can share one alarm 60, i.e., both the photodetecting unit 40 and the flow meter 50 are electrically connected to the alarm 60 and transmit signals to the alarm 60. Different alarm signal types are set, so that medical personnel can distinguish light transmittance signal alarm or flow signal alarm.

In this embodiment, the body fluid drainage device 100 further includes a flow rate controller 70, and the flow rate controller 70 is provided on the drain tube 10. The flow rate controller 70 is disposed near the inlet end 11 of the draft tube 10 and upstream of the cell enrichment member 30. Flow controller 70 is used to control the flow rate of the body fluid within drain tube 10. Medical personnel can regulate and control the flow rate of body fluid in the drainage tube 10 in real time through the flow rate controller 70 according to the flow in the drainage tube 10 that the flowmeter 50 detected, avoid puncture back body fluid velocity of flow too fast and arouse the discomfort of disease, improve the security.

Further, the body fluid drainage device 100 of the present embodiment further includes a three-way connector 80. This three-way connector 80 has three connectors, two of which are disposed oppositely and connected with the outlet end 12 of the drainage tube 10 and the liquid collecting member 20 respectively, so as to realize the communication between the drainage tube 10 and the inside of the liquid collecting member 20. The other connecting port is used for externally connecting an injector or a negative pressure suction apparatus.

When the body fluid is sticky and is not easy to drain, an injector or a negative pressure suction device can be connected to the connecting port of the three-way connector 80 to suck the body fluid in the drainage tube 10, so that the blockage of the drainage tube 10 is avoided, and the smooth body fluid drainage is ensured.

In the present embodiment, the liquid trap 20 includes a drainage bag 21, a suspension string 22, and a liquid discharge valve 23. Wherein, drainage bag 21 is made of transparent soft material, and the inside of drainage bag 21 is used for collecting the body fluid. The surface of the drainage bag 21 is provided with scales so that medical staff can check the collection amount of body fluid in real time. The drainage bag 21 of this embodiment can also be replaced with a drainage bottle.

A suspension cord 22 is provided at the top of the drainage bag 21 to suspend the drip chamber 20 at the bedside or to facilitate lifting by the patient during mobility. Drain valve 23 sets up in the bottom of drainage bag 21, and this drain valve 23 arranges in drainage bag 21 bottom and this drainage bag 21 internal connection's connecting pipe on, can discharge the inside body fluid of drainage bag 21 through this drain valve 23 to supply medical personnel chemical examination to handle.

Referring to fig. 3 to 5, another embodiment of the present application provides a body fluid drainage device 100, in which the cell enrichment member 30 of the body fluid drainage device 100 is a balloon housed inside the inlet end 11 of the drainage tube 10, and the surface of the balloon is provided with magnetic micro-magnet particles. The micro-magnet particles may be permanent magnets, electromagnets or paramagnetic magnets.

The body fluid drainage device 100 further includes an inflation tube 90, the inflation tube 90 communicating with the balloon and being disposed outside the drainage tube 10. The balloon is inflated by inflating or filling the inflation tube 90 so that it extends out of the inlet end 11 of the catheter 10.

The cell enrichment member 30 of this embodiment is an air bag, which is expanded from the inlet end 11 of the drainage tube 10, when the body fluid enters the drainage tube 10, the body fluid will contact with the air bag first, the micro-magnet particles on the surface of the air bag can capture the magnetized cells in the body fluid by magnetic force, so that the magnetized cells are adsorbed on the outer surface of the air bag, and the magnetized cells are enriched on the surface of the cell enrichment member 30. When the body fluid drainage device 100 is not in use, the balloon is received inwardly in the drain tube 10.

In this example, the surface of the balloon is a micromagnetic mesh film, which is a semipermeable polymer film having micromagnetic particles on the film. After the cell collection of the cell enrichment member 30 is finished, the medical staff can take down the micro-magnet net film on the surface of the air bag and collect the cells on the film.

Further, the balloon of the present embodiment has an umbrella-like structure in the inflated state, and the outer surface of the umbrella-like structure faces the inlet end 11 of the drainage tube 10. The umbrella-like structure is adapted to secure the drain tube 10 within a body cavity and maximize drainage of bodily fluids.

When the body fluid is collected, the body fluid is firstly contacted with the air bag with the umbrella-shaped structure, and magnetized cells in the body fluid are adsorbed by the micro-magnet particles on the surface of the air bag. The body fluid after cell enrichment enters the drainage tube 10 from the interior of the umbrella structure and is finally collected by the liquid collecting part 20.

In the present embodiment, the airbag includes an airbag main body 34, a canopy tube 35, and a handle tube (not shown in the drawings). Wherein the interior of the balloon body 34 is used for inflation or fluid filling. The umbrella surface tube 35 is provided on the surface of the airbag main body 34 and communicates with the inside of the airbag main body 34. The stem tube is fixed to the airbag main body 34 and communicates with the canopy tube 35, which communicates with the sea inflation tube 90.

When the interior of the inflation tube 90 is inflated or charged, gas or liquid enters the umbrella face tube 35 via the umbrella stem tube and enters the interior of the airbag main body 34 through the umbrella face tube 35, thereby inflating the airbag main body 34. The balloon body 34 in an inflated state extends from the inlet end 11 of the catheter 10, and the umbrella shaft tube is left inside the catheter 10. The port of the balloon in the inflated state communicates with the interior of the drain 10 so that the body fluid flows through the balloon and into the drain 10.

The balloon of this embodiment is in an inflated state with the outer surface of the umbrella-like structure balloon facing the inlet end 11 of the drain 10. In this embodiment, the micro-magnet particles may be provided only on the inner surface of the balloon, i.e. the inner surface of the balloon is provided with a micro-magnet mesh membrane through which the magnetized cells in the body fluid are collected. And after the cells and the body fluid are collected, removing the micro-magnet net film on the surface of the air bag.

To the body fluid drainage device of this application, when drawing body fluid and collecting, can also carry out timely effectual enrichment to the cell that drops in the body fluid of drainage to be convenient for the cell can in time be taken a sample, detected and analyzed, the cell of enrichment can be used to carry out the detection in aspects such as relevant cytology and molecular, provides effectual data for the clinical diagnosis and treatment of disease and the prognosis of improving the disease. In addition, the collected cells can be cultured and stored in vitro, which has important significance for the diagnosis of primary diseases, the individual screening of sensitive medicines, the selection of optimal treatment schemes and other researches.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A body fluid drainage device, comprising:

the drainage tube is used for flowing the donor liquid, and two ends of the drainage tube are respectively an inlet end and an outlet end;

the liquid collecting part is communicated with the outlet end of the drainage tube, and the interior of the liquid collecting part is used for collecting body fluid;

the cell enrichment part is arranged on the drainage tube; the cell enrichment member has magnetism so as to magnetically adsorb and collect magnetized cells in the body fluid flowing through the cell enrichment member.

2. The body fluid drainage device according to claim 1, wherein the cell-enriching member comprises a spherical magnetic bead which is provided inside the drainage tube and arranged on a flow path of the body fluid.

3. The body fluid drainage device according to claim 2, wherein the cell-enriching member further comprises a casing, the casing is coated on the outer surface of the magnetic bead, and the shape of the casing is matched with the shape of the magnetic bead.

4. The body fluid drainage device according to claim 3, wherein the housing is made of a biocompatible polymeric material.

5. The body fluid drainage device according to claim 2, wherein the drainage tube is arranged corresponding to the magnetic beads as a containing area, and the part of the drainage tube outside the containing area is a non-containing area; the outer surface of the drainage tube at the accommodating area protrudes outwards from the outer surface of the drainage tube at the non-accommodating area, and the outer diameter of the cell enrichment part is larger than the inner diameter of the drainage tube at the non-accommodating area.

6. The body fluid drainage device according to claim 5, wherein the inner surface of the drainage tube at the receiving area is an arc-shaped surface.

7. The body fluid drainage device according to claim 5, wherein the drainage tube in the accommodation region is provided with a taking and placing opening, and a taking and placing cover is arranged at the taking and placing opening to open or close the taking and placing opening.

8. The body fluid drainage device according to claim 1, wherein the cell-enriching member is a balloon housed inside the inlet end of the drainage tube, and the surface of the balloon is provided with magnetic micro-magnet particles; the body fluid drainage device further comprises an inflation tube which is communicated with the air bag and is arranged outside the drainage tube so as to enable the air bag to expand to extend out of the inlet end of the drainage tube by inflating or filling the inflation tube.

9. The body fluid drainage device according to claim 8, wherein the balloon is an umbrella in an inflated state, an outer surface of the umbrella facing the inlet end of the drainage tube.

10. The body fluid drainage device according to claim 9, wherein the balloon comprises a balloon body, a plurality of umbrella surface tubes disposed on a surface of the balloon body and communicating with an interior of the balloon body, and a umbrella stem tube fixed to the balloon body and communicating with the umbrella surface tubes, the umbrella stem tube communicating with the inflation tube.

11. The body fluid drainage device according to claim 9, wherein the inner surface of the umbrella structure is provided with the micro-magnet particles.

12. The body fluid drainage device according to claim 1, further comprising a photodetecting unit disposed on the drainage tube, the photodetecting unit being closer to the outlet end than the cell enriching member; the photoelectric detection unit is used for detecting the light transmittance of the surface of the cell enrichment piece.

13. The body fluid drainage device according to claim 1, further comprising a flow meter disposed on the drainage tube and an alarm electrically connected to the flow meter, the flow meter being disposed adjacent to the outlet end and on a flow path of the body fluid; the flow meter is used for detecting the flow of the body fluid in the drainage tube so as to transmit a flow signal to the alarm to control the alarm to alarm.

14. The body fluid drainage device according to claim 1, further comprising a three-way connector having three connection ports, wherein two of the connection ports are respectively communicated with the outlet end of the drainage tube and the liquid collecting member, and the other connection port is used for externally connecting a syringe or a negative pressure suction device.

15. The body fluid drainage device of claim 1, further comprising a flow controller disposed on the drainage tube and adjacent to the inlet end, the flow controller for controlling a flow rate of body fluid within the drainage tube.

16. The body fluid drainage device according to claim 1, wherein the liquid collecting member comprises a drainage bag, a suspension string provided at the top of the drainage bag, and a drain valve provided at the bottom of the drainage bag, and the inside of the drainage bag is used for collecting body fluid.