Endocrine patient urine sampling and testing device

Abstract

The present application relates to the technical field of medical sampling equipment, and specifically relates to an endocrine patient urine sampling and detecting device, which comprises a pressure structure. The pressure structure can generate high-pressure gas through pressure difference. The high-pressure gas forms directional airflow during the movement of the liquid guide pipe, and performs full-coverage blowing and cleaning on the liquid outlet, the liquid storage inlet and the surrounding area. The attached liquid at the liquid outlet is blown into the liquid channel, and the attached liquid at the liquid storage inlet is blown into the liquid storage shell, so as to prevent the surface of the liquid storage shell from being contaminated by liquid residue, ensure the whole process of sampling and sample separation to be airtight and leak-free, effectively eliminate the risk of cross infection, ensure the purity of the urine sample and the detection accuracy, significantly improve the health safety and the diagnosis reliability of the device in biomedical engineering application, and meet the design requirements of high precision, high biological safety and standardization of medical sampling equipment in the biomedical engineering industry.

Description

Technical Field

[0001] This invention relates to the field of medical sampling equipment technology, and in particular to a urine sampling and testing device for endocrine patients. Background Technology

[0002] The endocrine patient urine sampling and testing device is a specialized medical sampling equipment developed by the biomedical engineering industry for the precise diagnosis of endocrine diseases. It is an important supporting product in the field of in vitro diagnostics and medical sampling instruments. The device includes a sterile sampling cup, a graduated measuring area, a sealing cap, a sample information card, and specialized test strips. The entire device is made of medical-grade PP leak-proof and non-slip material, featuring engineered designs such as anti-volatile, anti-contamination, and easy-grip characteristics. It effectively ensures the stability of urine samples and the reliability of test results, meeting the biomedical engineering requirements for the safety, accuracy, and standardization of clinical sampling instruments.

[0003] However, current traditional sampling devices are prone to urine residue dripping during sampling, causing contamination of the device's outer surface. This does not meet the core standards of biomedical engineering for the biosafety and accuracy of medical devices. Contaminated sampling devices can directly interfere with the quantitative detection of key indicators such as urinary hormones and metabolic markers, reducing the accuracy and reliability of endocrine disease diagnoses. Furthermore, contaminants on the device surface can easily lead to cross-infection, failing to meet the biosafety requirements for repeated home sampling scenarios. This hinders the practical application of biomedical engineering technology in home monitoring of endocrine diseases and chronic disease management. Summary of the Invention

[0004] Therefore, it is necessary to provide a urine sampling and testing device for endocrine patients that addresses the problem of easy liquid contamination during sampling in current urine sampling and testing devices for endocrine patients.

[0005] The above objectives are achieved through the following technical solutions: A urine sampling and testing device for endocrine patients, comprising: A liquid storage shell is provided for storing liquid, and the liquid storage shell is provided with a liquid storage inlet, through which the liquid enters the liquid storage shell.

[0006] A fixed sleeve is detachably mounted on the liquid storage housing. A liquid guide tube is slidably disposed coaxially inside the fixed sleeve. One end of the liquid guide tube near the liquid storage housing can enter the interior of the liquid storage housing through the liquid inlet. A liquid channel is provided inside the liquid guide tube. The liquid guide tube is provided with an inlet for connecting the external environment and the liquid channel and an outlet for connecting the liquid channel and the liquid storage housing. The inlet is located on the side wall of the liquid guide tube away from the liquid storage housing, and the outlet is located on the side wall of the liquid guide tube near the liquid storage housing.

[0007] The pressure structure generates high-pressure gas. When the liquid guide tube moves away from the liquid storage shell, the high-pressure gas can blow the residual liquid at the liquid outlet into the liquid channel and the residual liquid at the liquid inlet into the liquid storage shell.

[0008] Furthermore, the pressure structure includes a sealing piston, which is coaxially and separably sleeved on the outer wall of the liquid guide tube. The outer wall of the sealing piston is tightly fitted with the inner wall of the fixed sleeve. The sealing piston, the fixed sleeve, and the liquid guide tube can surround and form a sealed first chamber. When the liquid guide tube moves toward the liquid storage shell, the sealing piston moves synchronously with the liquid guide tube, and the pressure in the first chamber increases. When the liquid guide tube moves away from the liquid storage shell, the sealing piston separates from the liquid guide tube. When the first chamber is connected to the inside of the liquid storage shell, the high-pressure gas in the first chamber enters the liquid channel from the liquid outlet and enters the liquid storage shell from the liquid inlet.

[0009] Furthermore, the outer wall of the sealing piston is provided with a groove, and the inner wall of the fixing sleeve is provided with a limit ring. The groove can engage with the limit ring so that when the liquid guide tube moves away from the liquid storage shell, the sealing piston separates from the liquid guide tube.

[0010] Furthermore, an annular groove is provided on one end wall of the liquid guide tube near the liquid storage shell, allowing gas in the first chamber to enter the liquid storage shell through the annular groove.

[0011] Furthermore, the liquid storage shell is also provided with a vent hole, which is used to connect the inside of the liquid storage shell with the external environment.

[0012] Furthermore, it also includes a sealing structure, which is used to prevent liquid in the liquid storage shell from flowing out of the liquid storage shell after the fixed sleeve and the liquid guide tube are separated from the liquid storage shell.

[0013] Furthermore, the sealing structure includes a first sealing plate, which is slidably connected to the liquid storage shell and is used to seal the liquid storage inlet.

[0014] Furthermore, a first elastic element is provided between the first sealing plate and the liquid storage shell, and the elastic force of the first elastic element always brings the first sealing plate close to the liquid storage inlet.

[0015] Furthermore, the sealing structure includes a second sealing plate, which is slidably connected to the liquid storage shell and is used to seal the vent hole.

[0016] Furthermore, it also includes a vacuum sampling tube and a liquid extraction tube. The vacuum sampling tube is used to extract liquid samples; the liquid extraction tube is fixedly connected to the liquid storage shell and is used to transport the liquid in the liquid storage shell to the vacuum sampling tube.

[0017] The beneficial effects of this invention are: This invention provides a urine sampling and testing device for endocrine patients, comprising a pressure structure. The pressure structure generates high-pressure gas through a pressure difference, creating a directional airflow as the liquid guide tube moves. This airflow provides complete coverage cleaning of the outlet, reservoir inlet, and surrounding area, blowing away any adhering liquid at the outlet into the liquid channel and into the reservoir housing, preventing contamination of the housing surface due to liquid residue. This ensures no liquid leakage during sampling and device separation, eliminating the risk of cross-infection from liquid contact. Simultaneously, the high-pressure gas purging prevents secondary contamination of the sample by residual liquid, ensuring sample purity and significantly improving the device's hygiene and safety in clinical use, as well as the accuracy and reliability of the test results. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a urine sampling and testing device for endocrine patients provided in an embodiment of the present invention; Figure 2 for Figure 1 Front view of a urine sampling and testing device for patients with endocrine disorders; Figure 3 for Figure 1 A cross-sectional view of the urine sampling and testing device for patients with endocrine disorders in its initial state; Figure 4 for Figure 1 A cross-sectional view of the outlet of the liquid guide tube of the urine sampling and testing device for endocrine patients located inside the liquid storage shell; Figure 5 for Figure 1 A cross-sectional view showing the connection between the first chamber of the liquid guide tube of the urine sampling and testing device for endocrine patients and the inside of the liquid storage shell. Figure 6 for Figure 3 A magnified view of a section at point A in the middle; Figure 7 for Figure 4 A magnified view of a section at point B in the middle; Figure 8 for Figure 5 A magnified view of a section at point C.

[0019] in: 110. Liquid storage shell; 111. Vent hole; 120. Cover; 130. First sealing plate; 131. First conical sealing surface; 140. Second sealing plate; 150. First elastic element; 160. Limiting plate; 170. Sealing block; 180. Liquid extraction tube; 190. Sealing sheet; 210. Fixing sleeve; 211. Limiting ring; 220. Liquid inlet conduit; 230. Liquid outlet conduit; 240. Liquid guide tube; 241. Liquid channel; 242. Liquid inlet; 243. Liquid outlet; 244. Annular groove; 250. Pressing rod; 260. Sealing piston; 261. Slot; 310. Vacuum sampling tube. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0021] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] The following reference Figures 1 to 8 This invention describes a urine sampling and testing device for endocrine patients provided by an embodiment of the present invention.

[0024] An embodiment of the present invention provides a urine sampling and testing device for endocrine patients, comprising a liquid storage shell 110, a fixing sleeve 210, and a liquid guide tube 240.

[0025] The liquid storage shell 110 is a hollow container used to store liquid samples. A cap 120 is detachably installed on the top of the liquid storage shell 110. The cap 120 has a liquid inlet and a liquid outlet. Liquid enters the liquid storage shell 110 through the liquid inlet and the liquid sample is taken out from the liquid storage shell 110 through the liquid outlet.

[0026] The fixing sleeve 210 has a hollow cylindrical structure. The outer wall of the cover 120 has a threaded block with internal threads at the liquid inlet. The outer wall of the fixing sleeve 210 has an external thread that mates with the internal thread, allowing the fixing sleeve 210 to be detachably installed above the cover 120 of the liquid storage shell 110. The fixing sleeve 210 is coaxially arranged with the liquid inlet. An inlet conduit 220 and a drain conduit 230 are fixedly installed on the outer wall of the fixing sleeve 210. The inlet conduit 220 is a hollow tubular structure. One end of the inlet conduit 220 is the outlet end, which is connected to the inner wall of the fixed sleeve 210. The other end is the liquid inlet end. The inlet conduit 220 is used to guide external liquid into the interior of the fixed sleeve 210. The outlet conduit 230 is a hollow tubular structure. One end of the outlet conduit 230 is connected to the inner wall of the fixed sleeve 210. The connection position of the outlet conduit 230 is lower than the connection position between the inlet conduit 220 and the fixed sleeve 210. The other end of the outlet conduit 230 is the waste liquid outlet end. The outlet conduit 230 is used to guide liquid to be discharged to the outside of the fixed sleeve 210, and to discharge the useless initial liquid during the sampling process, so as to avoid the initial liquid entering the liquid storage shell 110 and affecting the sample purity.

[0027] The liquid guide tube 240 is a hollow tubular structure, coaxially and slidably connected to the inner wall of the fixed sleeve 210. The outer wall of the liquid guide tube 240 is in contact with the inner wall of the fixed sleeve 210, and the liquid guide tube 240 can reciprocate along the axial direction of the fixed sleeve 210. A gap exists between the middle wall of the liquid guide tube 240 and the inner wall of the fixed sleeve 210, allowing liquid to enter the drain conduit 230 along the wall of the liquid guide tube 240. A first through hole is provided on the wall of the fixed sleeve 210 away from the liquid storage shell 110, and a second through hole is provided on the wall of the fixed sleeve 210 near the liquid storage shell 110. A pressing rod 250 is coaxially fixedly connected to the end of the fluid guide tube 240 away from the fluid storage shell 110. The pressing rod 250 is a round rod with a diameter smaller than that of the fluid guide tube 240. The pressing rod 250 can pass through the first through hole and is used to provide driving force for the sliding of the fluid guide tube 240. That is, the patient can apply axial force to the pressing rod 250 to drive the fluid guide tube 240 to slide along the axis within the fixed sleeve 210. The axial length of the fluid guide tube 240 can penetrate the fixed sleeve 210, and when the fluid guide tube 240 slides downward along the inner wall of the fixed sleeve 210, the end of the fluid guide tube 240 near the fluid storage shell 110 can pass through the second through hole and the fluid inlet and extend into the interior of the fluid storage shell 110. A liquid channel 241 is opened inside the fluid guide tube 240, and an inlet 242 and an outlet 243 are provided on the fluid guide tube 240. The inlet 242 is located on the side wall of the liquid guide tube 240 near the liquid inlet conduit 220, and is used to connect the external environment and the liquid channel 241. When the liquid guide tube 240 slides down along the inner wall of the fixed sleeve 210, the position of the inlet 242 can completely correspond to the outlet end of the liquid inlet conduit 220, and the liquid guided by the liquid inlet conduit 220 can enter the inlet 242. The outlet 243 is located on the side wall of the liquid guide tube 240 near the liquid storage shell 110, and is used to connect the liquid channel 241 and the liquid storage shell 110. When the liquid guide tube 240 slides down along the inner wall of the fixed sleeve 210 and the liquid guide tube 240 extends into the liquid storage shell 110, the outlet 243 can be completely inside the liquid storage shell 110.

[0028] The inlet conduit 220, liquid channel 241, inlet 242 and outlet 243 together form the channel for liquid to enter the liquid storage shell 110. That is, the liquid enters the inlet 242 through the inlet conduit 220, then flows along the liquid channel 241 to the outlet 243, and finally is discharged into the interior of the liquid storage shell 110 from the outlet 243.

[0029] During the use of the detection device, in the initial state, the liquid guide tube 240 is in the upper position within the fixed sleeve 210, and the liquid inlet 242 is located above the outlet end of the liquid inlet conduit 220, not connected to the liquid inlet conduit 220 or the liquid outlet conduit 230. After the patient inserts the initial liquid into the fixed sleeve 210 through the liquid inlet conduit 220, it flows through the gap between the fixed sleeve 210 and the liquid guide tube 240, along the wall of the liquid guide tube 240, and completely flows out of the liquid outlet conduit 230. After the initial liquid flows out, the patient applies an axial force towards the liquid storage housing 110 to the pressing rod 250, driving the liquid guide tube 240 to slide downward within the fixed sleeve 210 until the liquid inlet conduit 220 connects with the liquid channel 241 through the liquid inlet 242, while the liquid outlet 243 passes through the liquid inlet and enters the liquid storage housing 110. At this point, subsequent valid liquid samples enter through the inlet tube 220, flow into the liquid channel 241 through the inlet 242, and then enter the liquid storage shell 110 through the outlet 243, completing the sampling. After sampling, the patient pulls the pressing lever 250 upwards, causing the guide tube 240 to return to its original position within the fixing sleeve 210. When the guide tube 240 returns to its original position, the outlet 243 moves into the fixing sleeve 210, with the end of the guide tube 240 near the liquid storage shell 110 positioned within the second through hole. The second through hole is sealed to prevent residual liquid from flowing out at the outlet 243 when the fixing sleeve 210 and guide tube 240 are disassembled. Subsequently, the fixing sleeve 210 and guide tube 240 are removed, and the sample inside the liquid storage shell 110 is obtained through the retrieval port.

[0030] However, during sampling, liquid can easily remain between the fixing sleeve 210 and the liquid storage shell 110, and drip from the fixing sleeve 210 and the liquid guide tube 240 during disassembly. Simultaneously, residual liquid adheres to the outlet 243 of the liquid guide tube 240 during resetting, and this residual liquid drips onto the surfaces of the liquid storage shell 110 and the cap 120, causing surface contamination. This contamination of the surfaces of the liquid storage shell 110 and the cap 120 can lead to operator hand contact with residual liquid, increasing the risk of cross-infection, which does not meet the biosafety design requirements for medical sampling devices in the biomedical engineering industry. Furthermore, if residual liquid is transported with the samples, it may contaminate the testing environment and interfere with the test results.

[0031] Based on this, the fluid sampling and detection device for endocrine patients provided in this embodiment of the invention further includes a pressure structure capable of generating high-pressure gas. When the liquid guide tube 240 moves away from the liquid storage shell 110, the high-pressure gas can purge the liquid at the outlet 243 and the inlet of the liquid storage shell. Residual liquid at the outlet 243 is purged into the liquid channel 241, and residual liquid at the inlet is purged into the liquid storage shell 110.

[0032] Specifically, the pressure structure includes a sealing piston 260. The upper wall of the liquid guide tube 240 is in contact with the inner wall of the fixed sleeve 210, while gaps exist between the middle and lower walls of the liquid guide tube 240 and the inner wall of the fixed sleeve 210. The sealing piston 260 is an annular structure, coaxially sleeved and separable on the outer wall of the middle section of the liquid guide tube 240. The outer wall of the sealing piston 260 is tightly in contact with the inner wall of the fixed sleeve 210, and the inner wall of the sealing piston 260 is also tightly in contact with the outer wall of the liquid guide tube 240, ensuring that liquid does not enter between the sealing piston 260, the fixed sleeve 210, and the liquid guide tube 240. The sealing piston 260, the fixed sleeve 210, the liquid guide tube 240, and the cap 120 together form a sealed first chamber.

[0033] The outer wall of the sealing piston 260 is provided with an annular groove 261. The inner wall of the fixed sleeve 210 near the liquid storage shell 110 is fixedly provided with an annular limiting ring 211. The size of the groove 261 is the same as the size of the limiting ring 211 on the inner wall of the fixed sleeve 210. The groove 261 can form a snap-fit ​​with the limiting ring 211. The limiting ring 211 is used to restrict the movement of the sealing piston 260 after it is snapped with the groove 261 of the sealing piston 260.

[0034] A vent hole 111 is fixedly provided on the side wall of the liquid storage shell 110. The vent hole 111 is used to keep the inside of the liquid storage shell 110 at normal pressure and ensure that a stable pressure difference can be formed between the inside of the liquid storage shell 110 and the first chamber.

[0035] In the initial state, the liquid guide tube 240 is located at the upper end inside the fixed sleeve 210, the liquid inlet 242 is located above the outlet end of the liquid inlet guide tube 220, and the upper wall of the sealing piston 260 is located at the outlet end of the liquid inlet guide tube 220. At this time, the first chamber is in a closed state.

[0036] When the liquid enters the fixed sleeve 210 from the inlet pipe 220, the liquid will flow along the upper wall of the sealing piston 260 and be discharged from the outlet pipe 230, thus realizing the discharge of the liquid.

[0037] After the initial fluid is drained, the patient applies an axial force towards the reservoir housing 110 to the guide tube 240 by pressing the lever 250, driving the guide tube 240 to slide downwards within the fixed sleeve 210. The guide tube 240 simultaneously moves the sealing piston 260 downwards until the groove 261 of the sealing piston 260 is fully engaged with the limiting ring 211 of the fixed sleeve 210, at which point the sealing piston 260 stops moving. The inlet 242 of the guide tube 240 is connected to the inlet conduit 220, and the outlet 243 of the guide tube 240 passes through the reservoir inlet and enters the reservoir housing 110. Simultaneously, as the guide tube 240 moves the sealing piston 260 downwards, the volume of the first chamber continuously decreases, and the internal pressure continuously increases. The effective fluid sample enters from the inlet conduit 220, flows through the inlet 242, the fluid channel 241, and the outlet 243 into the reservoir housing 110, completing the sampling process.

[0038] After sampling, the patient applies an axial force away from the reservoir housing 110 to the guide tube 240 by pressing the lever 250, causing the guide tube 240 to slide upwards. Because the groove 261 of the sealing piston 260 engages with the limiting ring 211, the sealing piston 260 cannot move upwards with the guide tube 240, thus separating the guide tube 240 from the sealing piston 260. The guide tube 240 continues to move upwards. When the guide tube 240 moves to the position where the outlet 243 is at the reservoir inlet, the first chamber and the interior of the reservoir housing 110 are fully connected through the outlet 243 and the reservoir inlet. At this time, the inlet 242 of the guide tube 240 is connected to the external environment, thus maintaining a normal pressure state within the liquid channel 241; the reservoir housing 110 is connected to the external environment through the vent 111, maintaining a normal pressure state. At this time, a high-pressure state is formed in the first chamber, and a pressure difference exists between the first chamber and the interior of the liquid storage shell 110, as well as between the first chamber and the interior of the liquid channel 241. Under the action of the pressure difference, the high-pressure gas in the first chamber flows towards the liquid storage shell 110 and the liquid channel 241, forming a high-pressure gas flow with a purging force. Part of the high-pressure gas flows along the liquid channel 241 of the liquid guide tube 240, forming a purging force on the residual liquid attached at the liquid outlet 243, completely purging the residual liquid into the liquid channel 241; another part of the high-pressure gas enters the interior of the liquid storage shell 110 through the liquid outlet 243 and the liquid inlet, forming a purging force on the residual liquid at the liquid inlet, completely purging the residual liquid into the interior of the liquid storage shell 110. After cleaning, the fixing sleeve 210 and the liquid guide tube 240 are unscrewed, and the sample is obtained from the liquid storage shell 110 through the liquid collection port.

[0039] Therefore, the high-pressure gas generated by the first chamber can purge the liquid remaining at the liquid outlet 243 along the liquid channel 241 when the liquid guide tube 240 moves up to the liquid outlet 243 at the liquid inlet position, and enter the liquid storage shell 110 to purge the liquid remaining at the liquid inlet, thereby ensuring that there is no liquid residue outside the detection device. After the fixed sleeve 210 and the liquid guide tube 240 are separated from the cover 120, the outer surfaces of the liquid storage shell 110 and the cover 120 are absolutely clean.

[0040] Furthermore, an annular groove 244 is provided on the outer wall of the end of the liquid guide tube 240 near the liquid storage shell 110. The annular groove 244 is an annular groove structure located outside the liquid outlet 243, and the axial dimension of the annular groove 244 is larger than the axial dimension of the liquid outlet 243. When the liquid guide tube 240 moves upward until the upper end of the annular groove 244 is higher than the upper end of the liquid inlet, the first chamber is connected to the interior of the liquid storage shell 110 through the annular groove 244, and the high-pressure gas in the first chamber flows into the interior of the liquid storage shell 110 through the annular groove 244. During this process, the high-pressure gas purges the inner wall of the liquid inlet and the area near the liquid inlet, thereby expanding the purging range of the high-pressure gas in the liquid inlet area and ensuring that there is no liquid residue around the liquid inlet and on the top of the cap 120.

[0041] In one embodiment, when the fixing sleeve 210 and the liquid guide tube 240 are separated from the cap 120, the liquid inside the liquid storage shell 110 may flow out from the liquid storage inlet, or the liquid may overflow from the vent 111 when shaken due to the vent 111 being connected to the outside, causing contamination of the surfaces of the liquid storage shell 110 and the cap 120. Based on this, the liquid sampling and detection device for endocrine patients provided in this embodiment of the invention further includes a sealing structure to prevent liquid from flowing out of the liquid storage shell 110.

[0042] Specifically, the sealing structure includes a first sealing plate 130, a first elastic element 150, and a second sealing plate 140. The first sealing plate 130 is slidably connected to the inner wall of the liquid storage shell 110, and can move along the axial direction of the liquid inlet, and can completely seal the liquid inlet. The first elastic element 150 is disposed between the first sealing plate 130 and the inner wall of the liquid storage shell 110. One end of the first elastic element 150 is fixedly connected to the inner wall of the liquid storage shell 110, and the other end is fixedly connected to the end of the first sealing plate 130 away from the liquid inlet. The elastic force of the first elastic element 150 always tends to make the first sealing plate 130 move towards the liquid inlet, pushing the first sealing plate 130 closer to the liquid inlet. The second sealing plate 140 is fixedly connected to the first sealing plate 130 and moves synchronously with the first sealing plate 130 within the liquid storage shell 110. The second sealing plate 140 can completely seal the vent 111.

[0043] As the fluid guide tube 240 moves downward into the reservoir housing 110, the end of the fluid guide tube 240 near the reservoir housing 110 contacts the end of the first sealing plate 130 near the reservoir inlet. The axial force applied by the patient to the fluid guide tube 240 overcomes the elastic force of the first elastic element 150, causing the first sealing plate 130 to move away from the reservoir inlet and the second sealing plate 140 to move away from the vent 111. At this time, the reservoir inlet remains unobstructed, the second sealing plate 140 is positioned away from the vent 111, and the vent 111 remains unobstructed, ensuring that the inside of the reservoir housing 110 is under normal pressure. When sampling is complete, the patient removes the axial force applied to the pressing rod 250, and the elastic force of the first elastic element 150 drives the first sealing plate 130 to slide towards the reservoir inlet until the first sealing plate 130 abuts against the wall of the cap 120, thus sealing the reservoir inlet. Simultaneously, the elastic force of the first elastic element 150 pushes the liquid guide tube 240 upward and detaches it from the liquid inlet. During this process, the second sealing plate 140 slides synchronously with the first sealing plate 130 until it completely covers and seals the vent hole 111, forming a sealed space inside the liquid storage shell 110. During the separation of the fixing sleeve 210 and the liquid guide tube 240 from the cap 120, the first sealing plate 130 always maintains the seal on the liquid inlet, and the second sealing plate 140 always maintains the seal on the vent hole 111.

[0044] Therefore, after the fixed sleeve 210 and the liquid guide tube 240 are separated from the cap 120, it can effectively prevent liquid from flowing out of the liquid storage shell 110 and avoid contamination of the surface of the liquid storage shell 110 and the cap 120 due to liquid overflow.

[0045] Furthermore, a limiting plate 160 is provided on the inner wall of the liquid storage shell 110. The limiting plate 160 is vertically fixed to the inner wall of the liquid storage shell 110, and the length direction of the limiting plate 160 is consistent with the sliding direction of the second sealing plate 140. The limiting plate 160 is used to guide the second sealing plate 140 to move stably along a preset trajectory within the liquid storage shell 110. When the liquid guide tube 240 is inserted into the liquid storage inlet and pushes the first sealing plate 130 away from the liquid storage inlet, the second sealing plate 140 slides under the guidance of the limiting plate 160, disengaging from the vent hole 111, ensuring that the vent hole 111 is unobstructed. When the first sealing plate 130 slides towards the liquid storage inlet under the elastic force of the first elastic member 150, the second sealing plate 140, which is fixedly connected to the first sealing plate 130, moves synchronously. At this time, the second sealing plate 140 slides along the length direction of the limiting plate 160, ensuring that the second sealing plate 140 can be aligned and completely seal the vent hole 111.

[0046] Furthermore, a sealing block 170 is fixedly installed on the lower wall of the cap 120 at the liquid inlet. A first conical sealing surface 131 is provided at the end of the first sealing plate 130 near the liquid inlet. The first conical sealing surface 131 has an outwardly convex conical structure. The sealing block 170 has an annular structure, with its side wall facing the interior of the liquid storage shell 110 being conical, and the taper is consistent with the first conical sealing surface 131 of the first sealing plate 130. The sealing block 170 is used to cooperate with the first conical sealing surface 131 to enhance the sealing effect of the liquid inlet. The first conical sealing surface 131 can guide the liquid to flow along the surface of the first conical sealing surface 131 into the interior of the liquid storage shell 110, preventing liquid residue at the edge of the liquid inlet. The upper wall of the first sealing plate 130 coincides with the lower wall of the liquid guide tube 240, and both have the same diameter, which can prevent liquid from being stored on the upper wall of the first sealing plate 130.

[0047] During device use, when the liquid guide tube 240 is lowered and inserted into the liquid storage inlet, the lower wall surface of the liquid guide tube 240 is completely in contact with the upper wall surface of the first sealing plate 130. As the liquid guide tube 240 continues to move downward, the first sealing plate 130 overcomes the elastic force of the first elastic element 150 and slides into the liquid storage shell 110. At this time, the first conical sealing surface 131 separates from the sealing block 170, the liquid storage inlet is unobstructed, and the liquid flows out along the outlet 243 of the liquid guide tube 240 and flows smoothly into the liquid storage shell 110 under the guidance of the first conical sealing surface 131. When sampling is completed and the liquid guide tube 240 moves upward and disengages from the liquid storage inlet, the elastic force of the first elastic element 150 drives the first sealing plate 130 to slide towards the liquid storage inlet. The first conical sealing surface 131 gradually approaches and finally tightly fits against the conical wall surface of the sealing block 170, forming an absolute seal and completely blocking the connection between the liquid storage inlet and the outside. During this process, since the lower wall of the liquid guide tube 240 and the upper wall of the first sealing plate 130 remain completely in contact before separation, the upper wall of the first sealing plate 130 does not come into contact with any liquid and remains in a liquid-free state.

[0048] In one embodiment, the fluid sampling and testing device for endocrine patients provided by this invention further includes a vacuum sampling tube 310 and a suction tube 180. The vacuum sampling tube 310 is a tubular structure with one open end and an internal vacuum state, made of medical-grade transparent material. The vacuum sampling tube 310 is used to extract and store liquid samples from the liquid storage shell 110 using internal vacuum negative pressure, preventing the samples from contacting the external environment. The suction tube 180 is a hollow tubular structure, vertically fixed at the liquid inlet of the cap 120. One end of the suction tube 180 communicates with the inside of the liquid storage shell 110, and the other end extends outside the liquid inlet, with its extended end sealingly connected to the open end of the vacuum sampling tube 310. The suction tube 180 is used to guide the liquid in the liquid storage shell 110 into the vacuum sampling tube 310.

[0049] When it is necessary to remove the liquid sample from the storage shell 110, align the open end of the vacuum sampling tube 310 with and insert it into the protruding end of the extraction tube 180 to form a sealed connection. Since the vacuum sampling tube 310 is under vacuum while the storage shell 110 is under normal pressure, the pressure difference between the two drives the liquid inside the storage shell 110 to flow along the extraction tube 180 and enter the vacuum sampling tube 310 through the channel of the extraction tube 180. When the required amount of liquid is reached in the vacuum sampling tube 310, remove the vacuum sampling tube 310 from the extraction tube 180 to complete the sample extraction. Simultaneously, during the process of the vacuum sampling tube 310 extracting liquid from the storage shell 110, the pressure inside the storage shell 110 gradually decreases as the liquid volume decreases, creating a negative pressure lower than the external environment. At this time, the negative pressure inside the liquid storage shell 110 will exert a pulling force on the first sealing plate 130 towards the inside of the liquid storage shell 110. When the negative pressure inside the liquid storage shell 110 reaches a certain value, the pulling force will overcome the elastic force of the first elastic element 150, driving the first sealing plate 130 to slide into the liquid storage shell 110, and simultaneously driving the second sealing plate 140 away from the vent hole 111, so that the liquid storage inlet and the vent hole 111 are opened. After the liquid storage inlet and the vent hole 111 are opened, the normal pressure air of the external environment enters the liquid storage shell 110, and the negative pressure inside the liquid storage shell 110 gradually disappears until it is consistent with the normal pressure of the external environment. At this time, the pulling force on the first sealing plate 130 weakens, and the elastic force of the first elastic element 150 pushes the first sealing plate 130 to slide towards the liquid storage inlet. The second sealing plate 140 simultaneously resets and re-seals the vent hole 111, and the liquid storage shell 110 returns to normal pressure and remains in a sealed state.

[0050] Therefore, the pressure difference between the inside and outside of the liquid storage shell 110 controls the movement of the first sealing plate 130 and the second sealing plate 140, ensuring smooth liquid flow in the liquid storage shell 110 during sample extraction and automatically restoring and maintaining a normal pressure state during extraction. The dynamic balance between the elastic force of the first elastic element 150 and the pressure difference ensures the timeliness and accuracy of the movement of the first sealing plate 130 and the second sealing plate 140, solving the obstacle of negative pressure to sample extraction, while maintaining the sealing reliability of the liquid storage shell 110.

[0051] Furthermore, a sealing sheet 190 is fixedly installed on the end of the suction tube 180 that extends out of the liquid collection port. The sealing sheet 190 is a thin sheet structure made of medical-grade elastic sealing material, and its edges can cover the liquid collection port to form an absolute seal. The sealing sheet 190 is used to completely seal the outlet end of the suction tube 180 when no liquid collection operation is being performed, preventing external dust, impurities, or microorganisms from entering the suction tube 180 and causing contamination, while also preventing leakage of residual liquid samples inside the suction tube 180.

[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A urine sampling and testing device for endocrine patients, characterized in that, include: A liquid storage shell for storing liquid, the liquid storage shell being provided with a liquid storage inlet; A fixed sleeve is detachably mounted on the liquid storage shell. A liquid guide tube is slidably disposed coaxially inside the fixed sleeve. One end of the liquid guide tube near the liquid storage shell can enter the interior of the liquid storage shell through the liquid inlet. A liquid channel is provided inside the liquid guide tube. The liquid guide tube is provided with an inlet for connecting the external environment and the liquid channel and an outlet for connecting the liquid channel and the liquid storage shell. The inlet is located on the side wall of the liquid guide tube away from the liquid storage shell, and the outlet is located on the side wall of the liquid guide tube near the liquid storage shell. The pressure structure generates high-pressure gas. When the liquid guide tube moves away from the liquid storage shell, the high-pressure gas can blow the residual liquid at the liquid outlet into the liquid channel and the residual liquid at the liquid inlet into the liquid storage shell. The pressure structure includes a sealing piston, which is coaxially and separably sleeved on the outer wall of the liquid guide tube. The outer wall of the sealing piston is tightly fitted with the inner wall of the fixed sleeve. The sealing piston, the fixed sleeve, and the liquid guide tube can surround and form a sealed first chamber. When the liquid guide tube moves toward the liquid storage shell, the sealing piston moves synchronously with the liquid guide tube, and the pressure in the first chamber increases. When the liquid guide tube moves away from the liquid storage shell, the sealing piston separates from the liquid guide tube. When the first chamber is connected to the inside of the liquid storage shell, the high-pressure gas in the first chamber enters the liquid channel from the liquid outlet and enters the liquid storage shell from the liquid inlet. The liquid storage shell is also provided with a vent hole, which is used to connect the inside of the liquid storage shell with the external environment; It also includes a sealing structure, which is used to prevent liquid in the liquid storage shell from flowing out of the liquid storage shell after the fixed sleeve and the liquid guide tube are separated from the liquid storage shell; The sealing structure includes a first sealing plate, which is slidably connected to the liquid storage shell and is used to seal the liquid storage inlet. A first elastic element is provided between the first sealing plate and the liquid storage shell, and the elastic force of the first elastic element always makes the first sealing plate close to the liquid storage inlet; The sealing structure includes a second sealing plate, which is slidably connected to the liquid storage shell and is used to seal the vent hole.

2. The urine sampling and testing device for endocrine patients according to claim 1, characterized in that, The outer wall of the sealing piston is provided with a groove, and the inner wall of the fixed sleeve is provided with a limit ring. The groove can engage with the limit ring so that when the liquid guide tube moves away from the liquid storage shell, the sealing piston separates from the liquid guide tube.

3. The urine sampling and testing device for endocrine patients according to claim 1, characterized in that, An annular groove is provided on one end wall of the liquid guide tube near the liquid storage shell, allowing gas in the first chamber to enter the liquid storage shell through the annular groove.

4. The urine sampling and testing device for endocrine patients according to claim 1, characterized in that, It also includes a vacuum sampling tube and a liquid extraction tube. The vacuum sampling tube is used to extract liquid samples. The liquid extraction tube is fixedly connected to the liquid storage shell and is used to transport the liquid in the liquid storage shell to the vacuum sampling tube.

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