CN103203045B - Patient fluid collection metering device - Google Patents

Abstract

A device for collecting and measuring body fluid of a patient belongs to the technical field of medical equipment. Including liquid collection bag body; drainage mechanism, matched with the liquid collection bag body; liquid discharge mechanism, matched with the liquid collection bag body, features: the patient's body fluid inlet is set on the upper part of one side of the liquid collection bag body , set the patient's body fluid outlet at the lower part of one side of the liquid collection bag, and the drainage mechanism includes a fluid guide cup holder, a fluid guide cup, a catheter and a transition joint; the described liquid discharge mechanism includes a liquid discharge mechanism A pipe seat, a discharge pipe, a discharge valve and a limit seat of the discharge valve. Advantages: It helps medical staff to accurately grasp the patient's body fluid discharge per unit time, which is helpful for doctors to administer medicines to patients or adjust treatment plans; it is convenient to manufacture, and ensures the sealing effect to avoid leakage; it will not interfere with the surrounding environment Impact; it is convenient for medical staff to take samples for laboratory analysis.

Description

Patient fluid collection metering device

technical field

The invention belongs to the technical field of medical equipment, and in particular relates to a patient body fluid collection and metering device.

Background technique

The aforementioned patient body fluids such as urine and thoracoabdominal drainage fluid, etc., take the urine collector material for collecting patient urine as an example, which can be seen in large numbers in open Chinese patent documents, such as CN1282451C (medical use) for example. Semi-automatic urine metering storage), ZL02123886.3 (medical semi-automatic urine metering storage), ZL91225245.6 (disposable metering plastic urine bag), ZL94242826.9 (disposable precision metering double-chamber urine drainage device), ZL97211613 .3 (a bottle for measuring urine accumulation), ZL99209573.5 (urination measuring bottle), ZL01225226.3 (urine bag with accurate measurement) and ZL01268645.X (urine meter), etc. Take the equipment for collecting drainage fluid of patients after thoracoabdominal surgery as an example, such as CN2588988Y (Y-shaped drainage bag), CN2403425 (multifunctional drainage bag) and CN202113476U (drainage bag), etc.

The above-mentioned urine collection bag and drainage bag are similar in working principle and structure, so they can be used in many cases. Among them: In order to save resources and reduce the cost of use to reduce the economic burden of patients, most body fluid collection and metering devices appear in the form of plastic films. Specifically, the bag is made of plastic film, and the upper end of the bag is equipped with drainage The pipeline is equipped with a drain valve at the bottom of the bag. In addition, in order to grasp the amount of body fluid in the bag, scale marks are usually provided on one or both sides of the bag.

Not limited to the patient body fluid collection devices listed above generally have the following disadvantages: First, because the liquid discharge valve cannot be matched with a metering device such as a metering pump, it affects the medical staff's accurate grasp of the patient's body fluid volume, and ultimately affects the patient's medication. Therapeutic effect, because there is a causal relationship between the doctor's medication and the degree and volume of the patient's fluid discharge, although there are scale lines on the bag body, there are often large errors in observation with the scale line; A part of the drain valve tube bundle, so the drain valve usually hangs and extends out of the edge of the bag, so it is vulnerable to damage to the drain valve in links such as packaging, transportation and storage, and also interferes with surrounding objects during clinical use Third, because the drainage pipeline and the liquid discharge valve are usually combined in the bag body production process, it is not only troublesome to make, but also there is a risk of leakage due to poor sealing fit; fourth, because there is no medical staff for medical personnel. It is a component that randomly samples body fluids from patients for testing, so it is troublesome to take small samples of body fluids.

Aiming at the deficiencies in the above-mentioned prior art, the applicant has made a beneficial design, and the technical solution to be introduced below is produced under this background.

Contents of the invention

The task of the present invention is to provide a device that facilitates friendly matching between the discharge valve and the metering pump, so as to help medical personnel accurately grasp the patient's body fluid discharge per unit time, and facilitates the management of the discharge valve to avoid damage. And avoid interference with surrounding objects in the use state, which is beneficial to the convenience of manufacturing and ensures the sealing effect between the drainage pipeline and the liquid discharge valve and the bag, so as to prevent leakage and facilitate random sampling by medical personnel. A patient body fluid collection and metering device that improves medical staff's understanding of the patient's body fluid volume status.

The task of the present invention is accomplished in this way. A patient body fluid collection and metering device includes a fluid collection bag body with a bag cavity; Drainage mechanism, the drainage mechanism is matched with the bag body of the liquid collection bag, and communicated with the bag body cavity; a liquid discharge mechanism for leading out the liquid in the bag body cavity, the liquid discharge mechanism is matched with the body of the liquid collection bag, and It also communicates with the bag body cavity, and is characterized in that: a patient body fluid inlet is opened on the upper part of one side of the fluid collection bag, and the patient body fluid inlet communicates with the bag body cavity. The lower part of one side is provided with a patient's body fluid outlet, and the patient's body fluid outlet communicates with the bag body cavity, wherein the patient's body fluid inlet and the patient's body fluid outlet form a diagonal positional relationship with each other, and the drainage mechanism includes a fluid guide cup The cup holder, the fluid guide cup, the catheter tube and the transition joint, the fluid guide cup cup holder is fixed with the fluid collection bag at a position corresponding to the patient's body fluid inlet, and the cup holder chamber of the fluid guide cup holder is connected to the patient The body fluid inlet is connected, and the upper end of the guide cup is sealed with a cup cover. A gas-permeable film is placed between the cup cover and the guide cup, and a catheter joint is formed in the center of the cup cover. There are a group of vent cavities at intervals around the cover, the upper end of the catheter connector sticks out of the cup cover, and the lower end of the catheter connector protrudes into the catheter cavity of the catheter cup. The lower end extends with a cup seat matching joint sealingly matched with the cup seat of the liquid guiding cup. A one-way valve plate is arranged in the cavity and is located in the middle of the height direction of the guide cup cavity, and one end of the guide tube is matched with the upper end of the guide tube connector, and the guide tube lumen of the guide tube is connected to the upper end of the guide tube joint The catheter joint cavity of the catheter joint is connected, and the catheter joint cavity is communicated with the catheter cup cavity, and the transition joint is connected with the other end of the catheter, and a sampling device is arranged on the transition joint; The liquid discharge mechanism includes a liquid discharge pipe seat, a liquid discharge pipe, a liquid discharge valve, and a liquid discharge valve limit seat. The liquid discharge pipe seat is fixed with the liquid collection bag at a position corresponding to the patient's body fluid outlet, and the discharge pipe The discharge pipe seat chamber of the liquid pipe seat communicates with the patient's body fluid outlet, and one end of the discharge pipe is connected with the discharge pipe seat and communicates with the discharge pipe seat cavity. The discharge valve includes a valve body and a valve core. One side of the outer wall of the body extends a liquid discharge pipe fitting, and the other side extends a metering pump fitting, the other end of the liquid discharge pipe is connected to the liquid discharge pipe fitting, and the metering pump fitting is in use Matched with the metering pump, the valve core is set in the valve body cavity of the valve body, and a liquid discharge hole is opened on the valve core, and the liquid discharge hole penetrates from one side of the valve core to the other side, and at the same time, it is connected with the discharge hole. The discharge lumen of the liquid pipe communicates with the cavity of the metering pump connector of the metering pump connector. In the state, it is placed in the limited seat cavity of the limited seat of the discharge valve.

In a specific embodiment of the present invention, a lifting rod cavity is formed at the upper edge of the liquid collection bag body, and a lifting rod is arranged in the lifting rod cavity.

In another specific embodiment of the present invention, a handle cavity is formed on the upper part of the liquid collection bag body and in the center corresponding to the length direction of the handle.

In yet another specific embodiment of the present invention, a drainage tube relief hole is opened on one side of the upper edge of the liquid collection bag body and at a position corresponding to the drainage mechanism, and the drainage tube The liquid tube passes through the catheter give way hole.

In yet another specific embodiment of the present invention, metering marks are provided on the side of the liquid collection bag body.

In yet another specific embodiment of the present invention, the gas-permeable membrane is a gas-permeable and liquid-impermeable membrane.

In a further specific embodiment of the present invention, a sampling device seat is extended on the outer wall of one end of the transition joint, and the sampling device is arranged in the sampling device seat cavity of the sampling device seat. The seat cavity of the device communicates with the transition joint cavity of the transition joint, and the transition joint cavity communicates with the catheter lumen of the catheter.

In a further specific embodiment of the present invention, the sampling device includes a sampling pad and a restricting pad, and the sampling pad and the restricting pad are embedded in the cavity of the sampling device in a superimposed state, and The limiting pad is located on the outside of the sampling pad, and a sampling relief hole is opened in the center of the limiting pad.

In yet another specific embodiment of the present invention, a set of constricted flanges spaced apart from each other are formed on the outer wall of the other end of the transition joint.

In yet another specific embodiment of the present invention, a sheath is sleeved on the shrinkage flange.

One of the technical effects of the technical solution provided by the present invention, since the metering pump fitting joint of the valve body of the liquid discharge valve formed in the liquid discharge mechanism can be connected with the metering pump, it is helpful for medical staff to accurately grasp the patient's time in unit time. It is beneficial for doctors to administer medicines to patients or adjust treatment plans; secondly, since the drainage mechanism and liquid discharge mechanism can be made separately, they can be combined with the liquid collection bag at positions corresponding to the introduction and outlet of the patient's body fluids , so it can be conveniently manufactured, and ensure the sealing effect, avoiding leakage; third, because when the liquid discharge mechanism is in the non-discharge state, the metering pump joint can be placed on the liquid collection bag body through the liquid discharge valve to limit the seat tube, Therefore, it will not interfere with the surrounding environment; fourthly, because a sampling device is arranged on the transition joint of the drainage mechanism, it is convenient for medical personnel to take samples for laboratory analysis.

Description of drawings

Fig. 1 is a structural diagram of an embodiment of the present invention.

Detailed ways

In order to enable the examiners of the patent office, especially the public, to understand the technical essence and beneficial effects of the present invention more clearly, the applicant will describe in detail the following in the form of examples, but none of the descriptions to the examples is an explanation of the solutions of the present invention. Any equivalent transformation made according to the concept of the present invention which is merely formal but not substantive shall be regarded as the scope of the technical solution of the present invention.

Referring to Fig. 1, a liquid collection bag bag 1 with a bag cavity 11 is provided, taking the current position state shown in Fig. 1 as an example (hereinafter all related to orientations or directions such as up, down, left and right) The concept of sexuality is based on the position shown in FIG. 1 as an example), but it can also be in other shapes such as a circle, and the patient's body fluid introduction port 12 communicates with the bag body cavity 11. There is a patient's body fluid outlet 13 whose shape is as described for the patient's body fluid inlet 12 and also communicates with the bag cavity 11 on the left bottom of the fluid collection bag body 1 . As shown in the figure, the patient's body fluid inlet 12 and the patient's body fluid outlet 13 form a diagonal relationship with each other.

On the upper edge of the aforementioned liquid collection bag body 1, that is, at the position of the upper edge in the longitudinal direction, a lifting rod cavity 14 is formed, which is essentially a spacer between the two layers of films that constitute the liquid collecting bag body 1. Cavity, a lifting rod 141 made of plastic and having a circular cross-sectional shape is embedded in the lifting rod cavity 14 . And a handle cavity 15 is also formed on the upper part of the liquid collection bag body 1, the handle cavity 15 corresponds to the lower part of the center position in the length direction of the handle bar 141, and at the upper edge of the liquid collection bag body 1 In addition, a catheter relief hole 16 is provided at a position corresponding to the right end of the lifting rod 141, and a scale mark 17 is preferably printed on the outer wall of one side of the fluid collection bag body 1 .

A drainage mechanism 2 is provided, and the drainage mechanism 2 includes a fluid guide cup holder 21, a fluid guide cup 22, a catheter tube 23 and a transition joint 24. The position of the introduction port 12 is fixed with the liquid collection bag body 1 by hot-melt pressure welding, and the cup holder chamber 211 of the guide cup holder 21 communicates with the patient's body fluid introduction port 12 . The material of the guide cup 22 is the same as that of the guide cup holder 21, and the upper end of the guide cup 22 is equipped with a cup cover 221, and a ventilating cup is placed between the cup cover cavity of the cup cover 221 and the guide cup 22. Membrane 2211, the air-permeable membrane 2211 is an air-permeable and impermeable membrane. A catheter connector 2212 is formed at the central position of the cup cover 221, the upper end of the catheter connector 2212 protrudes from the cup cover 221, and the lower end protrudes or stretches into the guide cup chamber 222 of the guide cup 22, and The catheter connector cavity 22121 of the catheter connector 2212 communicates with the catheter cup cavity 222 . Around the cup cover 221 , that is, around the circumferential direction of the catheter fitting 2212 , a group of air leakage chambers 2213 are opened. Extending from the lower end of the guide cup 22 is a cup holder joint 223 that is sealingly matched with the guide cup holder 21 . A one-way valve plate 2221 is arranged in the aforementioned liquid guide cup chamber 222 and is generally located in the middle of the height direction of the liquid guide cup chamber 222. As can be seen from the figure, due to the setting of the one-way valve plate 2221, the liquid only The catheter joint 2212 can be introduced under the guide cup cavity 222, that is, under the one-way valve plate 2221, and the liquid that enters cannot flow out through the catheter joint 2212, that is, the patient who enters the bag cavity 11 There will be no backflow of bodily fluids. One end of the catheter tube 23 is matched with the upper end of the catheter connector 2212 , and the catheter lumen 231 of the catheter tube 23 communicates with the catheter connector cavity 22121 . The transition joint 24 is matched with the other end of the catheter 23 , and a sampling device 241 is arranged on the transition joint 24 . As shown in the figure, the aforementioned catheter tube 23 passes through the aforementioned catheter tube relief hole 16 .

Please continue to see Fig. 1, a sampling device seat 242 is extended on the outer wall of the upper end of one end of the aforementioned transition joint 24, that is, the position state shown in the figure, and the sampling device seat chamber 2421 of the sampling device seat 242 is connected to the transition joint cavity of the transition joint 24. 243 communicates, and the transition joint chamber 243 communicates with the aforementioned catheter lumen 231 , and the sampling device 241 is arranged in the sampling device seat cavity 2421 . On the outer wall of the other end of the transition joint 24 , that is, the lower end in the position shown in the figure, a set of constricted flanges 244 spaced apart from each other are formed. In order to prevent the constricted flange 244 from being polluted, a sheath 2441 is sleeved on the constricted flange 244. When in use, the sheath 2441 is pulled away from the constricted flange 244, otherwise it is placed on the constricted flange Type flange 244.

According to common sense, the transition joint 24 is used to connect with the drainage tube placed in the patient's body, that is to say, the constricted flange 244 is inserted into the drainage tube in the use state.

The aforementioned sampling device 241 includes a sampling pad 2411 and a limiting pad 2412. The sampling pad 2411 and the limiting pad 2412 are placed or embedded in the aforementioned sampling device seat cavity 2421 in a stacked state, and the limiting pad 2412 is located on the outside of the sampling pad 2411, and a sampling relief hole 24121 is opened in the central position of the restricting pad 2412, so that the syringe used for sampling can penetrate the sampling pad 2411 at the position corresponding to the sampling relief hole 24121, and pass through The sampling pad 2411 then penetrates into the transitional connection head chamber 243 for sampling, that is, extracting the patient's body fluid. The working principle of the sampling device 2411 can be found in the Chinese invention patent application publication number CN102907170A (needleless sampling connector).

Please still refer to Fig. 1, a liquid discharge mechanism 3 is provided, the liquid discharge mechanism 3 includes a liquid discharge pipe seat 31, a liquid discharge pipe 32, a liquid discharge valve 33 and a liquid discharge valve limiting seat 34, and the material is a plastic liquid discharge The tube base 31 is preferably fixed with the liquid collection bag body 1 by thermal fusion welding at a position corresponding to the patient's body fluid outlet 13, and the drain tube seat chamber 311 of the drain tube base 31 is connected to the patient's body fluid outlet. 13 connected. The discharge pipe 32 is preferably made of rubber, silicone tube or PVC hose (the aforementioned catheter 23 is the same example). The socket cavity 311 communicates with each other. The discharge valve 33 includes a valve body 331 and a valve core 332, and a discharge pipe fitting 3311 is extended on one side of the outer wall of the valve body 331 (the left side in the figure), while the other side (that is, the right side in the figure) There is a metering pump fitting 3312 extended, the other end of the aforementioned liquid discharge pipe 32 (that is, the right end in the figure) is connected with the liquid discharge pipe fitting 3311, and the metering pump fitting 3312 is connected to the metering pump when it is in use. Matching, the valve core 332 is set in the valve body cavity of the valve body 331, and a liquid discharge hole 3321 (also called a liquid hole) is opened on the core 332, and the liquid discharge hole 3321 penetrates from one side of the valve core 332 to the The other side, and at the same time communicate with the liquid discharge lumen of the liquid discharge pipe 32 and the metering pump fitting cavity of the metering pump fitting joint 3312. The liquid discharge valve limiting seat 34 is preferably fixed to the aforementioned side of the liquid collection bag body 1 by hot-melt pressure welding, and the aforementioned metering pump fitting 3312 is placed in the liquid discharging valve limiting seat when the liquid discharging mechanism 3 is not in use. 34 in the limited seat cavity 341.

When the spool 332 is pulled upwards, since the position of the discharge hole 3321 on the spool 332 is simultaneously connected with the cavity of the discharge pipe 32, that is, the cavity of the discharge pipe fitting 3311 and the cavity of the metering pump fitting 3312 The positions of the chambers are staggered, therefore, the whole liquid discharge mechanism 3 is in a non-working state, that is, a non-discharge state, and vice versa.

When using the present invention, the sheath 2441 is removed, and the shrinkage flange 244 is matched with one end of the drainage tube (not shown), and the other end of the drainage tube is implanted in the patient's body (if it is a catheterization, then The other end of the drainage tube is placed in the bladder of the patient. If the patient is drained after thoracoabdominal surgery, then the other end of the drainage tube is implanted in the patient's chest and abdominal cavity), and the body fluids from the patient's body pass through the transition joint 24, fluid guide The tube 23 , the catheter connector 2212 , the fluid guide cup 22 , the fluid guide cup holder 21 and the patient's bodily fluid inlet 12 enter the bag cavity 11 . When discharging liquid, then the metering pump fitting 3312 is displayed from the limited seat cavity 341, and the metering pump fitting 3312 is connected to the metering pump through a pipeline, and then the valve core 332 is pressed down so that the liquid discharging hole 3321 is in contact with the metering pump. The liquid discharge lumen of the liquid discharge pipe 32 and the chamber of the metering pump fitting 3312 are connected, and the body fluid of the patient in the bag cavity 11 enters the metering pump for metering. Inside the cavity 341. When a random sample is to be taken, it can then be drawn by means of a syringe with the sampling device 241 .

The structure of the present invention cannot be reused for different patients, so as to reflect safety and sanitation. In a word, the technical solution provided by the present invention objectively overcomes the deficiencies in the prior art, completes the task of the invention, and realizes the technical effect described by the applicant in the above technical effect column.

Claims (10)

1. A patient's body fluid collection metering device, comprising a liquid collection bag bag (1) with a bag body cavity (11); a bag body chamber ( 11) the drainage mechanism (2) inside, the drainage mechanism (2) is matched with the bag body (1) of the liquid collection bag, and communicates with the bag body cavity (11); one is used to draw out the liquid in the bag body cavity (11) The liquid discharge mechanism (3), the liquid discharge mechanism (3) is matched with the liquid collection bag body (1), and also communicates with the bag body cavity (11), it is characterized in that: in the liquid collection bag body ( The upper part of one side of 1) is provided with a patient's body fluid inlet (12), and the patient's body fluid inlet (12) communicates with the bag cavity (11), and on the side of the fluid collection bag bag (1) There is a patient's body fluid outlet (13) in the lower part of the body fluid outlet, and the patient's body fluid outlet (13) communicates with the bag body cavity (11), wherein the patient's body fluid inlet (12) and the patient's body fluid outlet (13) form a diagonal Positional relationship, the described drainage mechanism (2) comprises a guide cup cup holder (21), a guide cup (22), a catheter tube (23) and a transition joint (24), and the guide cup cup holder (21) is The position corresponding to the patient's body fluid inlet (12) is fixed with the liquid collection bag body 1, and the cup holder chamber (211) of the fluid guide cup holder (21) communicates with the patient's body fluid inlet (12), and the fluid guide The upper end of the cup (22) is sealed with a cup cover (221), and a gas-permeable membrane (2211) is placed between the cup cover (221) and the liquid guide cup (22), and the center of the cup cover (221) There is a catheter connector (2212) at the position, and a group of air leakage chambers (2213) are provided at intervals around the cup cover (221), and the upper end of the catheter connector (2212) sticks out of the cup cover (221) , and the lower end of the catheter joint (2212) penetrates into the catheter cavity (222) of the catheter cup (22), and a cup holder (21) extending from the lower end of the catheter cup (22) The cup seat matching joint (223) that is sealed and matched, the cup seat matching joint (223) penetrates into the cup seat cavity (211) of the liquid guide cup seat (21), and communicates with the cup seat cavity (211), A one-way valve plate (2221) is arranged in the middle of the height direction of the liquid guide cup chamber (222) and is located in the liquid guide cup chamber (222), and one end of the catheter tube (23) is connected with the catheter tube connector. The described upper end of (2212) fits, and the catheter lumen (231) of this catheter (23) communicates with the catheter connector cavity (22121) of catheter connector (2212), and the catheter connector The cavity (22121) communicates with the liquid guide cup cavity (222), and the transition joint (24) is matched with the other end of the catheter tube (23), and a sampling device (241) is arranged on the transition joint (24); The liquid discharge mechanism (3) includes a liquid discharge pipe seat (31), a liquid discharge pipe (32), a liquid discharge valve (33) and a liquid discharge valve limit seat (34), and the liquid discharge pipe seat (31) corresponds to The patient's body fluid outlet ( 13) is fixed to the liquid collection bag body (1), and the liquid discharge pipe seat cavity (311) of the liquid discharge pipe seat (31) communicates with the patient's body fluid outlet (13), and the liquid discharge pipe (32) One end is matched with the discharge pipe seat (31), and communicates with the discharge pipe seat cavity (311), and the discharge valve (33) includes a valve body (331) and a spool (332), and the valve body (331) One side of the outer wall is extended with a discharge pipe fitting (3311), while the other side is extended with a metering pump fitting (3312), and the other end of the discharge pipe (32) is matched with the discharge pipe fitting (3311). Connected, the metering pump fitting (3312) is connected with the metering pump in use, the valve core (332) is set in the valve body cavity of the valve body (331), and a liquid discharge hole ( 3321), the discharge hole (3321) penetrates from one side of the spool (332) to the other side, and is simultaneously connected with the discharge lumen of the discharge pipe (32) and the metering pump fitting (3312) The metering pump fittings are connected to the cavity, and the liquid discharge valve limiting seat (34) is fixed on the side of the liquid collection bag body (1), and the metering pump fittings (3312) are placed in the non-use state. In the limited seat cavity (341) of the liquid discharge valve limited seat (34). 2. The patient's body fluid collection and metering device according to claim 1, characterized in that a lifter cavity (14) is formed at the position of the upper edge of the liquid collection bag body (1), and in the lifter cavity ( 14) be provided with a handle bar (141) in it. 3. The patient's body fluid collection and metering device according to claim 2, characterized in that it is formed on the upper part of the fluid collection bag body (1) and in the center corresponding to the length direction of the lifting rod (14). There is a handle cavity (15). 4. The patient's body fluid collection and metering device according to claim 1, characterized in that it is located on one side of the upper edge of the fluid collection bag body (1) and at a position corresponding to the drainage mechanism (2). There is a drain hole (16), and the drain tube (23) passes through the drain hole (16). 5. The device for collecting and measuring body fluid of a patient according to claim 1, characterized in that a metering mark (17) is provided on the side of the fluid collection bag body (1). 6. The patient body fluid collection and metering device according to claim 1, characterized in that the gas permeable membrane (2211) is a gas permeable and liquid impermeable membrane. 7. The patient body fluid collection and metering device according to claim 1, characterized in that a sampling device seat (242) extends on the outer wall of one end of the transition joint (24), and the sampling device (241) is set In the sampling device seat cavity (2421) of the sampling device seat (242), the sampling device seat cavity (2421) communicates with the transition joint cavity (243) of the transition joint (24), and the transition joint cavity (243) communicates with the transition joint cavity (243) The catheter lumen (231) of the catheter (23) communicates. 8. The device for collecting and measuring patient body fluid according to claim 7, characterized in that said sampling device (241) comprises a sampling pad (2411) and a limiting pad (2412), and the sampling pad (2411) and limiting pad (2412) are embedded in the cavity (2421) of the sampling device in a superimposed state, and the restriction pad (2412) is located on the outside of the sampling pad (2411), and a central position of the restriction pad (2412) is opened. Sample relief hole (24121). 9. The patient's body fluid collection and metering device according to claim 1 or 7, characterized in that a group of constricted flanges (244) spaced apart from each other are formed on the outer wall of the other end of the transition joint (24). 10. The patient body fluid collection and metering device according to claim 9, characterized in that a sheath (2441) is sheathed on the constricted flange (244).