Sampling equipment for severe pulmonary infection sputum sample

Abstract

The invention discloses a severe pulmonary infection sputum sample sampling device, and relates to the technical field of medical sampling instruments.The severe pulmonary infection sputum sample sampling device comprises a sampling tank and a negative pressure pipe, a mounting cabin is fixedly installed on the sampling tank, a filtering module used for filtering sputum sample particles is further arranged outside the sampling tank, and a detection module used for detecting a sputum sample is further arranged on the sampling tank; the sampling tank is connected with the detection module through a transfer pipe, the filtering module comprises a filtering box installed on the mounting cabin in a sealed mode, a sampling pipe used for sucking a sputum sample is arranged on the filtering box, a sputum suction head is fixedly installed at the end, extending out of the filtering box, of the sampling pipe, and filtering holes distributed in an arrayed mode are formed in the side, close to the sputum suction head, of the filtering box. The filter holes are formed in the filter box, and the filter membrane is arranged at the joint of the sampling tank and the mounting cabin, so that secondary filtration of a sputum sample is realized, large particles and fine impurities in the sputum sample can be effectively removed, and a pure sample can be obtained without additional filtration steps.

Description

Technical Field

[0001] This invention relates to the field of medical sampling device technology, specifically to a sputum sample collection device for severe lung infections. Background Technology

[0002] In clinical practice, severe pulmonary infection is a type of acute and critical illness that progresses rapidly and has a high mortality rate. It is commonly seen in patients with acute exacerbations of chronic obstructive pulmonary disease, severe pneumonia, and acute respiratory distress syndrome.

[0003] These infections are mostly caused by pathogens such as bacteria, viruses, and fungi. Timely identification of the pathogen type and drug sensitivity characteristics is crucial for accurately formulating anti-infection treatment plans and reducing patient mortality. Sputum, as the direct secretion from pulmonary infection lesions, contains pathogen information and inflammatory markers, which are core evidence for achieving the above diagnostic goals. Therefore, accurate sputum sampling and testing are a key step in the diagnosis and treatment process of severe pulmonary infections.

[0004] Sputum sample collection from patients with severe pulmonary infections primarily relies on sampling bottles equipped with negative pressure tubes and sampling tubes. The operating principle involves connecting the negative pressure tube to a negative pressure source, using negative pressure to draw sputum from the patient's respiratory tract into the sampling tube, which is then collected in the sampling bottle. The initially collected sputum sample often contains airway mucosal slough, purulent secretion clots, and other particulate matter, requiring additional filtration before testing. In subsequent reagent addition and testing, the reagents must be manually mixed according to the specified ratio and titrated one by one onto the test strip or reaction container containing the sputum sample, which is highly susceptible to reagent leakage or sample splashing, causing contamination. Summary of the Invention

[0005] In view of the problems existing in the prior art, the present invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a sputum sample collection device for patients with severe pulmonary infections. The problem it aims to solve is that sputum sampling for patients with severe pulmonary infections mainly uses a sampling bottle with a negative pressure tube and a sampling tube, where negative pressure is used to draw in and collect the sputum. However, the initial sputum sample contains particulate matter such as airway mucosal slough, requiring additional filtration; furthermore, when reagents are manually prepared and titrated onto test strips or reaction containers, leakage or splashing can easily occur, causing contamination.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a sputum sample collection device for severe pulmonary infection, comprising a sampling container and a negative pressure tube, wherein a mounting chamber is fixedly installed on the sampling container, and a filter module for filtering sputum particles is provided outside the sampling container, and a detection module for detecting sputum is also provided on the sampling container, and the sampling container is connected to the detection module through a transfer tube;

[0008] The filtration module includes a filter box that is sealed and installed on the mounting compartment. The filter box is equipped with a sampling tube for sputum sampling. A suction head is fixedly installed at one end of the sampling tube extending outside the filter box. The filter box has a series of filter holes on the side near the suction head. The filter box is connected to the sampling container through the filter holes. The filter box is also equipped with a sliding groove for disassembling and installing the mounting compartment.

[0009] As a preferred embodiment of the sputum sample collection device for severe pulmonary infection described in this invention, wherein: a filter membrane corresponding to the filter holes is provided at the connection between the sampling can and the mounting chamber; the bottom end of the negative pressure tube extends into the sampling can; and a negative pressure connector for connecting a negative pressure device is provided at one end of the negative pressure tube protruding from the sampling can; and a filter head is fixedly installed at one end of the transfer tube located in the sampling can.

[0010] As a preferred embodiment of the sputum sample collection device for severe pulmonary infection described in this invention, the detection module includes a detection tank connected to the sampling tank via a transfer tube. The detection tank has a mixing chamber for mixing the detection solvent. One end of the transfer tube passing through the detection tank is located in the mixing chamber. A negative pressure control valve is fixedly installed at the end of the transfer tube away from the filter head, and the negative pressure control valve is provided with a negative pressure connector for connecting to a negative pressure device.

[0011] As a preferred embodiment of the sputum sample collection device for severe pulmonary infection described in this invention, the detection tank is further provided with a quantitative titration tank, and the quantitative titration tank is filled with a detection reagent. The bottom end of the quantitative titration tank is provided with a titration valve tube for quantitative titration, and one end of the titration valve tube passing through the detection tank is located in the mixing chamber.

[0012] As a preferred embodiment of the sputum sample collection device for severe pulmonary infection described in this invention, the detection container is further provided with a detection chamber for detecting sputum samples, and the mixing chamber is connected to the detection chamber through a liquid guide groove, wherein the end of the liquid guide groove near the detection chamber is inclined downward.

[0013] As a preferred embodiment of the sputum sample collection device for severe pulmonary infection described in this invention, a hydraulic U-shaped tube is fixedly installed in the detection tank, and an airtight plug is fixedly installed at one end of the hydraulic U-shaped tube below the mixing chamber. A vertically distributed pressure boosting tube is provided on the airtight plug. A connector for a pressure boosting device is provided at one end of the pressure boosting tube protruding from the detection tank. A lifting piston for lifting the test strip is movably connected to the end of the hydraulic U-shaped tube away from the airtight plug.

[0014] As a preferred embodiment of the sputum sample collection device for severe pulmonary infection described in this invention, the lifting piston is provided with an integrally formed airtight rod, one end of which extends into a hydraulic U-shaped tube, and the airtight rod is also provided with vertically distributed top rods, and the test strip is mounted on the lifting piston through a test strip holder.

[0015] As a preferred embodiment of the sputum sample collection device for severe pulmonary infection described in this invention, a sealing pad is provided above the lifting piston, and the sealing pad is installed in a sealed fit with the detection chamber, and the top end of the top rod is in contact with the sealing pad.

[0016] In summary, the present invention has at least one of the following beneficial effects:

[0017] 1. This invention achieves secondary filtration of sputum samples by setting filter holes in the filter box and setting a filter membrane at the connection between the sampling container and the mounting chamber. It can effectively remove larger particles and fine impurities, and obtain pure samples without additional filtration steps.

[0018] 2. This invention achieves automatic quantitative addition of test reagents through a quantitative titration vessel and titration valve tube, replacing the manual addition of reagents. At the same time, the sealing gasket and the airtight cooperation of the detection chamber effectively prevent leakage of reagents or samples during the processing.

[0019] 3. The present invention does not use expensive electronic components in its overall structure and is designed for single use, which not only reduces equipment costs but also avoids cross-contamination problems that may be caused by repeated use. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a cross-sectional perspective view of the present invention;

[0023] Figure 3 This is a structural diagram showing the assembly of the sampling tank and the filtration module of the present invention.

[0024] Figure 4 This is a structural diagram of the filtering module of the present invention;

[0025] Figure 5 A structural diagram showing the assembly of the quantitative titration vessel and the detection module of this invention:

[0026] Figure 6 This is a cross-sectional view of the detection module of the present invention:

[0027] Figure 7 This is a structural diagram showing the assembly of the lifting piston and the test paper according to the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Sampling container; 2. Negative pressure tube; 3. Mounting chamber; 4. Filter box; 401. Filter holes; 402. Slide groove; 5. Sampling tube; 501. Suction head; 6. Filter membrane; 7. Transfer tube; 701. Negative pressure control valve; 702. Negative pressure connector; 8. Filter head; 9. Detection container; 901. Mixing chamber; 902. Detection chamber; 903. Liquid guide groove; 10. Hydraulic U-tube; 11. Airtight plug; 1101. Pressure boosting tube; 12. Lifting piston; 1201. Airtight rod; 1202. Top rod; 13. Test strip; 1301. Test strip holder; 14. Quantitative titration container; 1401. Titration valve tube; 15. Sealing gasket. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] This invention discloses a sputum sample collection device for patients with severe lung infections.

[0032] Example 1

[0033] Reference Figure 1-7This invention provides a sputum sample collection device for severe pulmonary infections, comprising a sampling container 1 and a negative pressure tube 2. A mounting chamber 3 is fixedly installed on the sampling container 1, and a filter module for filtering sputum particles is also provided outside the sampling container 1. A detection module for detecting sputum samples is also provided on the sampling container 1. The sampling container 1 is connected to the detection module via a transfer tube 7. The filter module includes a filter box 4 sealed on the mounting chamber 3, and a sampling tube 5 for aspirating sputum samples is provided on the filter box 4. A suction head 501 is fixedly installed at one end of the sampling tube 5 extending outside the filter box 4. A series of filter holes 401 are arranged on the side of the filter box 4 near the suction head 501, and the filter box 4 is connected to the sampling container 1 through the filter holes 401. A sliding groove 402 for disassembling and installing the mounting chamber 3 is also provided on the filter box 4. The sampling container 1, as the initial collection container for sputum samples, has good sealing and pressure resistance. The device features a removable cover. When the cover is not removed, the sampling container 1 and the filter box 4 remain in a sealed connection. The negative pressure tube 2 is connected to the inside of the sampling container 1 to introduce negative pressure for sputum aspiration. The mounting chamber 3 is an integrally formed structure with the sampling container 1, providing a stable mounting base for the filter box 4 and enabling the transfer of negative pressure within the sampling container 1. The filter box 4 adopts a sealed design and is detachably connected to the mounting chamber 3 via a sliding groove 402. The sampling tube 5 is a flexible medical catheter, and the suction head 501 installed at its end extending outside the filter box 4 is ergonomically designed to reduce irritation to the patient's respiratory tract. The filter holes 401 can perform preliminary filtration of the aspirated sputum, blocking larger particles. The filter box 4 is connected to the sampling container 1 through the filter holes 401, allowing the filtered sputum to smoothly enter the sampling container 1, thus achieving preliminary sputum filtration and collection. Since the device does not use expensive electronic components, it is assumed to be for single use only.

[0034] The connection between the sampling container 1 and the mounting chamber 3 is provided with a filter membrane 6 corresponding to the filter holes 401. The bottom end of the negative pressure tube 2 extends into the sampling container 1, and the end of the negative pressure tube 2 protruding from the sampling container 1 is provided with a negative pressure connector 702 for connecting to the negative pressure device. The end of the transfer tube 7 located in the sampling container 1 is fixedly installed with a filter head 8. The filter membrane 6 is made of high-precision medical filter material, which can further filter out fine particles that cannot be blocked by the filter holes 401, and will not affect the transmission of negative pressure. The negative pressure tube 2 can be connected to the negative pressure device to ensure that negative pressure can be effectively introduced into the sampling container 1. The filter head 8 is made of high-density filter material, which can prevent tiny impurities that may remain in the sampling container 1 from entering the transfer tube 7, avoiding clogging of the transfer tube 7 or affecting subsequent testing.

[0035] The detection module includes a detection container 9 connected to the sampling container 1 via a transfer tube 7. The detection container 9 has a mixing chamber 901 for mixing the detection solvent. One end of the transfer tube 7 passes through the detection container 9 and is located in the mixing chamber 901. A negative pressure control valve 701 is fixedly installed at the end of the transfer tube 7 furthest from the filter head 8, and the negative pressure control valve 701 has a negative pressure connector 702 for connecting to a negative pressure device. The detection container 9 is made of transparent medical-grade material for easy observation of the internal reaction. The detection container 9 also has a removable cover. The cover plate allows the test strip 13 to be fed into the detection chamber 902. The mixing chamber 901 is a specially designed cavity structure for the thorough mixing of sputum samples and test reagents. Sputum in the sampling container 1 can smoothly enter the mixing chamber 901 through the transfer tube 7. The negative pressure control valve 701 installed on the transfer tube 7 can precisely control the magnitude and opening and closing of the negative pressure, thereby controlling the speed and amount of sputum entering the mixing chamber 901. The negative pressure connector 702 on the negative pressure control valve 701 is also a standard interface, which can be connected to a negative pressure device to provide power for the transfer of sputum.

[0036] The test tank 9 is also equipped with a quantitative titration tank 14, which is filled with test reagents. The bottom of the quantitative titration tank 14 is equipped with a titration valve tube 1401 for quantitative titration, and one end of the titration valve tube 1401 passes through the test tank 9 and is located in the mixing chamber 901. The quantitative titration tank 14 is used to store test reagents and has a precise quantitative control function through the titration valve tube 1401. The test reagents can be dripped into the mixing chamber 901 according to the set dosage, avoiding dosage errors and leakage problems that occur when adding manually.

[0037] The testing container 9 is also equipped with a testing chamber 902 for detecting sputum samples. The mixing chamber 901 is connected to the testing chamber 902 through a liquid guide groove 903. The liquid guide groove 903 is inclined downward at one end near the testing chamber 902. The testing chamber 902 is the area for detecting sputum samples. The test strip 13 can be placed inside. Before sampling, the test strip 13 is placed on the test strip holder 1301 with tweezers. The inclined design of the liquid guide groove 903 can utilize gravity to allow the mixed sputum and reagent mixture to flow smoothly into the testing chamber 902.

[0038] A hydraulic U-tube 10 is fixedly installed in the test tank 9, and an airtight plug 11 is fixedly installed at one end of the hydraulic U-tube 10 below the mixing chamber 901. The airtight plug 11 is provided with vertically distributed pressure boosting pipes 1101. The end of the pressure boosting pipe 1101 protruding from the test tank 9 is provided with a connector for connecting to a pressure boosting device. The end of the hydraulic U-tube 10 away from the airtight plug 11 is movably connected to a lifting piston 12 for lifting the test paper 13. The airtight plug 11 has good sealing performance to prevent leakage of sealing oil and seepage of liquid in the mixing chamber 901. The pressure boosting pipe 1101 on the airtight plug 11 is connected to an external pressure boosting device. By applying pressure to the pressure boosting pipe 1101, the sealing oil in the hydraulic U-tube 10 can be pushed to flow. The lifting piston 12 movably connected at the end of the hydraulic U-tube 10 away from the airtight plug 11 can move up and down under the push of hydraulic oil.

[0039] The lifting piston 12 is provided with an integrally formed airtight rod 1201, and one end of the airtight rod 1201 extends into the hydraulic U-tube 10. The airtight rod 1201 is also provided with vertically distributed top rods 1202, and the test strip 13 is installed on the lifting piston 12 through the test strip holder 1301. The airtight rod 1201 is tightly fitted with the inner wall of the hydraulic U-tube 10 to ensure the effectiveness of hydraulic transmission.

[0040] A sealing gasket 15 is provided above the lifting piston 12, and the sealing gasket 15 is installed in a sealed fit with the detection chamber 902. The top end of the push rod 1202 is in contact with the sealing gasket 15. When the lifting piston 12 rises, the push rod 1202 on the airtight rod 1201 can lift the sealing gasket 15, allowing the mixture to enter the detection chamber 902. When the lifting piston 12 falls, the push rod 1202 no longer lifts the sealing gasket 15. The sealing gasket 15 is sealed in the detection chamber 902 to prevent liquid leakage and external contamination during the detection process.

[0041] During sputum sampling from patients with severe pulmonary infections using the device, in the sampling stage, the negative pressure connector 702 of the negative pressure tube 2 is first connected to the negative pressure device. At this time, the sampling container 1 and the filter box 4 are kept in a sealed connection. Medical staff place the suction head 501 in a suitable position in the patient's airway. After activating the negative pressure device, negative pressure is introduced into the sampling container 1 through the negative pressure tube 2 and transferred to the filter box 4 through the mounting chamber 3. Under the action of negative pressure, the patient's sputum enters the sampling tube 5 through the suction head 501 and then flows into the filter box 4. The filter holes 401 on the side of the filter box 4 near the suction head 501 perform preliminary filtration of the sputum, blocking larger particles. As the sputum continues to enter the sampling container 1 through the filter holes 401, the filter membrane 6 at the connection between the sampling container 1 and the mounting chamber 3 further filters fine particles. Finally, the pure sputum sample is collected in the sampling container 1. During this process, the filter membrane 6... It does not affect the transmission of negative pressure, ensuring smooth sampling. The filter box 4 is detachably connected to the mounting compartment 3 via the slide 402, which facilitates subsequent processing.

[0042] During the sample transfer and test preparation stage, the negative pressure connector 702 of the negative pressure control valve 701 on the transfer tube 7 needs to be connected to the negative pressure device. After opening the negative pressure control valve 701, the sputum in the sampling container 1 flows through the transfer tube 7 under negative pressure. The filter head 8 at the end of the transfer tube 7 intercepts residual micro-impurities to avoid contaminating subsequent steps. After the sputum enters the mixing chamber 901 of the test container 9 through the transfer tube 7, the negative pressure control valve 701 is closed to stop sample delivery. At this time, the quantitative titration container 14 accurately drips the test reagent into the mixing chamber 901 according to the set dosage through the titration valve tube 1401 at the bottom, realizing the automatic mixing of sputum sample and reagent without manual addition, reducing the risk of leakage.

[0043] During the testing phase, the mixed sputum and reagent mixture flows into the detection chamber 902 via the guide channel 903 (which is tilted at the end near the detection chamber 902, utilizing gravity). Before testing, the removable cover of the detection container 9 must be removed, and the test strip 13 is installed on the lifting piston 12 through the test strip holder 1301. Then, the cover is closed. Before the mixture enters the detection chamber 902, pressure is applied to the hydraulic U-shaped tube 10 through the pressurization tube 1101. The sealing oil pushes the lifting piston 12 upward, and the push rod 1202 on the airtight rod 1201 lifts the sealing gasket 15, allowing the mixture to smoothly enter the detection chamber 902. Subsequently, the pressure is released, the lifting piston 12 descends, and the push rod 1202 disengages from the sealing gasket 15. The sealing gasket 15 and the detection chamber 902 are sealed together to prevent leakage of the mixture. The test strip 13 reacts upon contact with the mixture, and medical personnel detect the reaction through the transparent detection container 902. Observe the test results and complete the entire testing process;

[0044] It is worth noting that because the device does not use expensive electronic components, it is intended for single use only, thus avoiding the risk of cross-contamination caused by reuse and further ensuring the safety of the test.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A sputum sample collection device for severe pulmonary infections, characterized in that: It includes a sampling container (1) and a negative pressure tube (2). The sampling container (1) is fixedly installed with a mounting compartment (3), and the outside of the sampling container (1) is also provided with a filter module for filtering sputum particles. The sampling container (1) is also provided with a detection module for detecting sputum. The sampling container (1) is connected to the detection module through a transfer tube (7). The filtration module includes a filter box (4) that is sealed and installed on the mounting compartment (3), and the filter box (4) is provided with a sampling tube (5) for sputum sampling. The sampling tube (5) extends to one end of the filter box (4) and is fixedly installed with a suction head (501). The filter box (4) has a filter hole (401) arranged on the side near the suction head (501). The filter box (4) is connected to the sampling container (1) through the filter hole (401). The filter box (4) is also provided with a sliding groove (402) for disassembly and installation of the mounting compartment (3).

2. The sputum sample collection device for severe pulmonary infections according to claim 1, characterized in that, The connection between the sampling tank (1) and the mounting compartment (3) is provided with a filter membrane (6) corresponding to the filter hole (401). The bottom end of the negative pressure tube (2) extends into the sampling tank (1), and the end of the negative pressure tube (2) protruding from the sampling tank (1) is provided with a negative pressure connector (702) for connecting the negative pressure device. The end of the transfer tube (7) located in the sampling tank (1) is fixedly installed with a filter head (8).

3. The sputum sample collection device for severe pulmonary infections according to claim 1, characterized in that, The detection module includes a detection tank (9) connected to the sampling tank (1) via a transfer tube (7). The detection tank (9) has a mixing chamber (901) for mixing the detection solvent. One end of the transfer tube (7) passing through the detection tank (9) is located in the mixing chamber (901). A negative pressure control valve (701) is fixedly installed at the end of the transfer tube (7) away from the filter head (8), and a negative pressure connector (702) for connecting to a negative pressure device is provided on the negative pressure control valve (701).

4. The sputum sample collection device for severe pulmonary infections according to claim 3, characterized in that, The detection vessel (9) is also provided with a quantitative titration vessel (14), and the quantitative titration vessel (14) is filled with detection reagents. The bottom end of the quantitative titration vessel (14) is provided with a titration valve tube (1401) for quantitative titration, and one end of the titration valve tube (1401) passing through the detection vessel (9) is located in the mixing chamber (901).

5. The sputum sample collection device for severe pulmonary infections according to claim 3, characterized in that, The detection container (9) is also provided with a detection chamber (902) for detecting sputum samples, and the mixing chamber (901) is connected to the detection chamber (902) through a liquid guide groove (903). The liquid guide groove (903) is inclined downward at one end near the detection chamber (902).

6. The sputum sample collection device for severe pulmonary infections according to claim 5, characterized in that, A hydraulic U-tube (10) is fixedly installed in the test tank (9), and an airtight plug (11) is fixedly installed at one end of the hydraulic U-tube (10) below the mixing chamber (901). A vertically distributed pressure boosting pipe (1101) is provided on the airtight plug (11). A connector for connecting the pressure boosting device is provided at one end of the pressure boosting pipe (1101) protruding from the test tank (9). A lifting piston (12) for lifting the test paper (13) is movably connected at one end of the hydraulic U-tube (10) away from the airtight plug (11).

7. The sputum sample collection device for severe pulmonary infections according to claim 6, characterized in that, The lifting piston (12) is provided with an integrally formed airtight rod (1201), and one end of the airtight rod (1201) extends into the hydraulic U-tube (10). The airtight rod (1201) is also provided with vertically distributed top rods (1202), and the test strip (13) is installed on the lifting piston (12) through the test strip holder (1301).

8. The sputum sample collection device for severe pulmonary infections according to claim 7, characterized in that, A sealing pad (15) is provided above the lifting piston (12), and the sealing pad (15) is installed in a sealed fit with the detection chamber (902), and the top end of the push rod (1202) is in contact with the sealing pad (15).

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