Closed blood bag sampler

Abstract

The utility model relates to the technical field of medical instruments, in particular to a closed blood bag sampler, and aims to solve the technical problems of blood sample pollution and leakage risks when small samples are extracted in the prior art. The closed blood bag sampler comprises a sampling bag, a conveying pipeline and a heat sealing device. The sampling bag is fixedly connected to the outer side of the blood bag through the conveying pipeline, the conveying pipeline is provided with the easily-folded plug, the heat sealing device is clamped to the conveying pipeline, the easily-folded plug controls the sampling bag to be communicated with the blood bag, then the blood bag and the sampling bag are separated in the mode that the conveying pipeline is fused through heat sealing, the operation process is simplified, and the technical requirement is met. And a totally-closed blood bag sampling process is realized. The technical problems of blood sample pollution and leakage risks in an existing blood bag sample extraction process are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a closed blood bag sampler. Background Art

[0002] In the processing of blood samples, it is crucial to prevent contamination and ensure the purity of samples. The existing method uses sterile scissors to cut the tubing and extract the sample with a syringe, but this process has the risk of contamination and relies on strict condition control, such as scissors sterilization, environmental cleanliness, standardized operation and syringe quality. Negligence in any link may cause sample contamination and affect the test results. In addition, the heat sealing step after sample extraction also has risks. Failure of heat sealing may cause sample leakage and environmental pollution, which increases the complexity of the operation and technical requirements.

[0003] The current blood bag sample extraction process has the risk of blood sample contamination and leakage. Utility Model Content

[0004] The utility model aims to provide a closed blood bag sampler to solve the technical problem of blood sample contamination and leakage risks when extracting small samples in the related art.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0006] The closed blood bag sampler provided by the utility model comprises: a sampling bag, a conveying pipeline and a heat sealing device. The sampling bag is connected to the bag body through the conveying pipeline; the conveying pipeline can be switched from a cut-off state to a conducting state so that the bag body is connected to the sampling bag so that the blood in the bag body can enter the sampling bag along the conveying pipeline; the heat sealing device is installed on the conveying pipeline, and is used to heat-seal and melt the conveying pipeline to separate the bag body from the sampling bag and maintain the closed state of the bag body and the sampling bag.

[0007] Specifically, the delivery pipeline includes a catheter and an easy-to-break plug. The catheter is a hollow tube, and the easy-to-break plug is installed on the catheter. When sampling, the easy-to-break plug is broken to make the catheter conductive.

[0008] Specifically, the conduit includes an easy-to-break section and at least one extension section. The easy-to-break section is a hose, and the easy-to-break section is equipped with the easy-to-break plug, which is used to switch the conveying pipeline from a cut-off state to a conducting state. One end of the extension section is connected to the easy-to-break section, and the extension section is equipped with the heat sealing device.

[0009] Specifically, the sampling bag is made of a transparent material and a scale is provided on the surface of the sampling bag for confirming the volume of the sample obtained in the sampling bag.

[0010] Specifically, the heat sealing device includes a shell, a heating component and a pressing component. The heating component and the pressing component are both installed on the shell, and the heating component is connected to the pressing component. The inner wall of the shell is provided with a heat insulating layer, the heating component is used to generate heat to melt the conveying pipeline, and the pressing component is used to apply pressure to the melted conveying pipeline.

[0011] Specifically, the heating assembly includes a reaction chamber and an activation component, wherein a plurality of compartments for separating and storing reaction raw materials and catalysts are arranged in the reaction chamber. One end of the activation component is connected to the housing, and the other end is connected to the compartments, and is used to break the closed state between the compartments so that each of the reaction raw materials and the catalysts can contact to stimulate the reaction to generate heat and gas.

[0012] Specifically, the heating assembly further includes a pressure relief valve installed in the reaction chamber. The pressure relief valve can release gas inside the reaction chamber to prevent the reaction chamber from exploding due to internal pressure.

[0013] Specifically, the pressing assembly includes a first cylinder and a second cylinder. The first cylinder and the second cylinder are respectively located on both sides of the delivery pipeline, and the second cylinder includes a cylinder body, a piston and an ejection rod. The cylinder body is connected to the reaction chamber, the piston is inserted into the cylinder body and connected to the ejection rod, and an arc-shaped groove is provided on the end of the ejection rod away from the piston. The piston and the ejection rod are made of heat-conducting materials, and the reaction of the reaction chamber is used to release heat and gas to heat and push the ejection rod to make the first cylinder and the second cylinder approach each other.

[0014] Specifically, it comprises two heat-sealing devices arranged at intervals. After heat-sealing is completed, an area separated from the bag body and the sampling bag is formed between the two heat-sealing devices, which is used to separate the bag body and the sampling bag.

[0015] Furthermore, it also includes multiple groups of the delivery pipelines and the sampling bags.

[0016] Based on the above technical solutions, the beneficial effects of the present invention are analyzed as follows:

[0017] The utility model provides a closed blood bag sampler, comprising:

[0018] Sampling bag, conveying pipeline and heat sealing device. The sampling bag is connected to the bag body through the conveying pipeline; the conveying pipeline can be switched from a cut-off state to a conducting state so that the bag body is connected to the sampling bag so that the blood in the bag body can enter the sampling bag along the conveying pipeline; the heat sealing device is installed on the conveying pipeline, and is used to heat-seal and melt the conveying pipeline to separate the bag body from the sampling bag and maintain the closed state of the bag body and the sampling bag.

[0019] In specific applications, the bag body is rotated or turned over several times to ensure the uniformity of the sample. The conveying pipeline is switched from the cut-off state to the on-state to connect the bag body and the sampling bag, and the required sample is moved into the sampling bag through the on-state conveying pipeline. A heat sealing device is used to heat-seal and fuse the conveying pipeline to separate the bag body from the sampling bag.

[0020] It can be seen that compared with the existing technology, the closed blood bag sampler is provided with a delivery pipeline and a sampling bag connected to the outside of the blood bag, and the blood bag and the sampling bag are separated by heat-sealing and fusing the delivery pipeline, which simplifies the operation process and technical requirements and realizes a fully closed blood bag sampling process. The technical problem of blood sample contamination and leakage risks in the current blood bag sample extraction process is overcome. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the overall structure of a closed blood bag sampler provided in an embodiment of the utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of the structure of the heat sealing device;

[0024] Figure 3 Schematic diagram of the cutaway structure of the heat sealing device Figure 1 ;

[0025] Figure 4 Schematic diagram of the cutaway structure of the heat sealing device Figure 2 ;

[0026] Figure 5 A schematic diagram of the structure of the activated component.

[0027] icon:

[0028] 001, bag body;

[0029] 100. Sampling bag;

[0030] 200, delivery pipeline; 210, catheter; 211, easy-to-break section; 212, extension section; 220, easy-to-break plug;

[0031] 300, heat sealing device; 310, housing; 320, heating assembly; 321, reaction chamber; 322, activation component; 323, pressure relief valve; 330, pressing assembly; 331, first cylinder; 332, second cylinder; 3321, cylinder body; 3322, piston; 3323, ejection rod. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0035] The current blood bag sample extraction process has the risk of blood sample contamination and leakage.

[0036] In view of this, the utility model provides a closed blood bag sampler, comprising:

[0037] The sampling bag 100, the delivery pipeline 200 and the heat sealing device 300. The sampling bag 100 is connected to the bag body 001 through the delivery pipeline 200; the delivery pipeline 200 can be switched from the isolation state to the conduction state so that the bag body 001 is connected with the sampling bag 100, so that the blood in the bag body 001 can enter the sampling bag 100 along the delivery pipeline 200; the heat sealing device 300 is installed on the delivery pipeline 200, and is used to heat-seal and melt the delivery pipeline 200 to separate the bag body 001 from the sampling bag 100 and keep the bag body 001 and the sampling bag 100 in a closed state.

[0038] Based on the above technical solutions, the closed blood bag sampler provided by the utility model can achieve the following technical effects:

[0039] The closed blood bag sampler is provided with a delivery pipeline 200 and a sampling bag 100 connected to the outside of the blood bag, and the blood bag and the sampling bag 100 are separated by heat-sealing and fusing the delivery pipeline 200, thereby simplifying the operation process and technical requirements, and realizing a fully closed blood bag sampling process. The technical problem of blood sample contamination and leakage risks in the current blood bag sample extraction process is overcome.

[0040] The following combination Figures 1 to 5 The structure and shape of the closed blood bag sampler provided in this embodiment are described in detail:

[0041] In this embodiment, the reaction raw materials are quicklime, sodium bicarbonate and water;

[0042] Regarding the structure of the delivery pipeline 200, specifically:

[0043] The delivery pipeline 200 includes a catheter 210 and an easy-to-break plug 220. The catheter 210 is a hollow tube, and includes an easy-to-break section 211 and at least one extension section 212. The easy-to-break section 211 is a hose, and the easy-to-break plug 220 is installed on the easy-to-break section 211, which is used to switch the delivery pipeline 200 from a cut-off state to a conducting state. When sampling, the easy-to-break plug 220 is broken to make the catheter 210 conductive. One end of the extension section 212 is connected to the easy-to-break section 211, and the extension section 212 is installed with a heat sealing device 300. The extension section 212 is used to increase the distance between the bag body 001 and the sampling bag 100 and the heat sealing device 300 to prevent the blood components from being damaged by heat.

[0044] In the solution of this embodiment, the sampling bag 100 is made of a transparent material and a scale is set on the surface of the sampling bag 100 for confirming the volume of the sample obtained in the sampling bag 100.

[0045] Regarding the structural composition of the heat sealing device 300, specifically:

[0046] The heat sealing device 300 includes a housing 310, a heating component 320 and a pressing component 330, and the heating component 320 and the pressing component 330 are both installed on the housing 310. The inner wall of the housing 310 is provided with an insulating layer to prevent heat loss. Among them, the insulating layer can be set to a nano-SiOx coating or a polyurethane foam material deposited on the surface of the polyethylene film. Specifically, the heating component 320 includes a reaction chamber 321, an activation component 322 and a pressure relief valve 323, and a sandwich compartment for storing quicklime, water and sodium bicarbonate is provided in the reaction chamber 321. Among them, water and sodium bicarbonate are separately sealed and packaged with plastic films. One end of the activation component 322 is connected to the housing 310, and the other end is connected to the water-containing film in the sandwich compartment. The activation component 322 is used to destroy the water-containing film between the sandwich compartments so that water and quicklime contact and react to release heat, thereby stimulating the sodium bicarbonate in the film to be heated and decomposed into carbon dioxide and water vapor to expand the film, and then the quicklime, water and sodium bicarbonate react synergistically to generate a large amount of heat and gas. The pressure relief valve 323 is installed in the activation component 322. The pressure relief valve 323 can release the gas inside the reaction chamber 321 to prevent the reaction chamber 321 from exploding due to excessive gas pressure inside.

[0047] Specifically, the activation component 322 is a cylindrical structure threadedly connected to the housing 310, and a plurality of sharp protrusions are provided at one end of the activation component 322 close to the water-containing film. A boss is provided on the inner wall of the housing 310 at the connection of the activation component 322, which is used to prop up the water-containing film to prevent the sharp protrusions from piercing the water-containing film when placed normally. A plurality of protrusions are provided at one end of the activation component 322 away from the delivery pipeline 200, which play an anti-slip role and are used to rotate the activation component 322 close to the water-containing film and make the sharp protrusions pierce the water-containing film.

[0048] Specifically, the pressing assembly 330 includes a first cylinder 331 and a second cylinder 332. The first cylinder 331 and the second cylinder 332 are respectively located on both sides of the conveying pipeline 200, and the second cylinder 332 includes a cylinder body 3321, a piston 3322 and a push rod 3323. The cylinder body 3321 is connected to the reaction chamber 321, and the piston 3322 is inserted into the cylinder body 3321 and connected to the push rod 3323. The push rod 3323 is provided with an arc-shaped groove on the end away from the piston 3322 to provide uniform heat distribution. The piston 3322 and the push rod 3323 are made of heat-conducting materials, and the reaction of the reaction chamber 321 is used to release heat and gas to heat and push the push rod 3323 to make the first cylinder 331 and the second cylinder 332 close to each other. The heat of the ejector rod 3323 is used to melt the conveying pipeline 200, and the extrusion between the first cylinder 331 and the second cylinder 332 is used to apply pressure to the melted conveying pipeline 200 to complete the heat sealing of the conveying pipeline 200. The heat conductive material can be stainless steel, aluminum alloy or copper.

[0049] In the solution of this embodiment, the sampler includes two heat-sealing devices 300 arranged at intervals. After the heat-sealing is completed, an area separated from the bag body 001 and the sampling bag 100 is formed between the two heat-sealing devices 300. The separation area is cut open with scissors to separate the bag body 001 and the sampling bag 100. The separation area is used to maintain the closed state of the bag body 001 and the sampling bag 100, avoid sample failure or misdiagnosis caused by contamination, and improve the safety and reliability of blood samples.

[0050] In an optional solution of this embodiment, the catheter 210 has two extension sections 212, and the extension sections 212 are connected to two sections of the easy-to-break section 211, and the two heat-sealing devices 300 are respectively clamped on the two extension sections 212. After the heat sealing is completed, the easy-to-break section 211 is located in the partition area, and the easy-to-break plug 220 is pulled out to separate the bag body 001 and the sampling bag 100, avoiding the risk of damaging the closed state of the bag body 001 and the sampling bag 100 due to operating errors when using sharp tools.

[0051] In the optional solution of this embodiment, the sampler also includes multiple sets of delivery pipelines 200 and sampling bags 100. Each sampling bag 100 is independent of each other, and can perform multiple samplings without pollution risks at different time periods. After sampling, if the sample is contaminated or lost due to improper operation, it can be directly sampled again, which improves work efficiency and sample utilization, which is of great significance for blood quality monitoring and blood safety supervision.

[0052] In summary, the specific working process of the closed blood bag sampler provided in this embodiment is as follows:

[0053] Rotate or flip the blood bag several times to ensure the uniformity of the sample. Break the easy-to-break plug 220 in the delivery pipeline 200 to connect the bag body 001 and the sampling bag 100, press the bag body 001 to squeeze the blood in the bag body 001 into the sampling bag 100, and use the scale set on the surface of the sampling bag 100 to assist in extracting the required sample volume.

[0054] The activation component 322 is rotated, and the sharp protrusion pierces the water storage film in the clamping compartment of the reaction chamber 321 as the activation component 322 is screwed in. The water flows out and reacts with the quicklime to release heat, thereby triggering the sodium bicarbonate encapsulated in the film to decompose by heat to produce carbon dioxide and water vapor. After the film is ruptured, the diffused water vapor further enhances the heat release of the reaction between the quicklime and water. The reaction produces a large amount of heat and gas. Due to the insulated closed shell 310, the heat is conducted along the piston 3322 to the ejection rod 3323, and the extension section 212 fitted with the ejection rod 3323 is melted. The gas generated by the reaction gathers in the reaction chamber 321 and pushes the piston 3322 and the ejection rod 3323 to squeeze the melted extension section 212 to complete the heat sealing, and the excess gas in the reaction chamber 321 is discharged by the pressure relief valve 323.

[0055] After the extension section 212 is cooled and solidified, the activation component 322 is rotated in the reverse direction to open the pressure relief valve 323, thereby eliminating the high pressure environment in the reaction chamber 321 and separating the heat sealing device 300 from the conveying pipeline 200. The used easy-to-break plug 220 is pulled out of the easy-to-break section 211 to separate the bag body 001 from the sampling bag 100, and the bag body 001 and the sampling bag 100 can both remain sealed.

[0056] When improper operation results in sample contamination or loss, another set of transport pipelines 200 and sampling bags 100 are used to perform sampling again.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A closed blood bag sampler, characterized in that: include: A sampling bag (100), a delivery pipeline (200) and a heat sealing device (300); The sampling bag (100) is connected to the bag body (001) via the transport pipeline (200); The transport pipeline (200) can be switched from a cut-off state to a conducting state so that the bag body (001) is connected to the sampling bag (100), so that the blood in the bag body (001) can enter the sampling bag (100) along the transport pipeline (200); The heat sealing device (300) is installed on the conveying pipeline (200) and is used to heat seal and fuse the conveying pipeline (200) to separate the bag body (001) and the sampling bag (100) and maintain the sealed state of the bag body (001) and the sampling bag (100).

2. The closed blood bag sampler according to claim 1, characterized in that: The delivery pipeline (200) comprises a catheter (210) and a frangible plug (220); The conduit (210) is a hollow tube, and the conduit (210) is equipped with the easily breakable plug (220); When sampling, the frangible plug (220) is broken to make the catheter (210) conductive.

3. The closed blood bag sampler according to claim 2, characterized in that: The catheter (210) comprises a breakable section (211) and at least one extended section (212); The easily foldable section (211) is a hose, and the easily foldable section (211) is equipped with the easily foldable plug (220) for switching the conveying pipeline (200) from a cut-off state to a conducting state; One end of the extension section (212) is connected to the easily breakable section (211); The extension section (212) is equipped with the heat sealing device (300).

4. The closed blood bag sampler according to claim 1, characterized in that: The sampling bag (100) is made of a transparent material and a scale is provided on the surface of the sampling bag (100) for confirming the volume of the sample obtained in the sampling bag (100).

5. The closed blood bag sampler according to claim 1, characterized in that: The heat sealing device (300) comprises a housing (310), a heating component (320) and a pressing component (330); The heating component (320) and the pressing component (330) are both installed on the housing (310); The heating component (320) is connected to the pressing component (330); The inner wall of the shell (310) is provided with a heat insulating layer; The heating component (320) is used to generate heat to melt the delivery pipeline (200); The pressing assembly (330) is used to apply pressure to the melted conveying pipeline (200).

6. The closed blood bag sampler according to claim 5, characterized in that: The heating assembly (320) includes a reaction chamber (321) and an activation component (322); The reaction chamber (321) is connected to the pressing assembly (330); The reaction chamber (321) is provided with a plurality of compartments for separating and storing reaction raw materials and catalysts; One end of the activation component (322) is connected to the housing (310), and the other end is connected to the clamping compartment; The activation component (322) is used to destroy the closed state between the clamping chambers so that each of the reaction raw materials and the catalyst can contact each other to stimulate the reaction and generate heat and gas.

7. The closed blood bag sampler according to claim 6, characterized in that: The heating component (320) further comprises a pressure relief valve (323), wherein the pressure relief valve (323) is installed in the reaction chamber (321); The pressure relief valve (323) can release the gas inside the reaction chamber (321) to prevent the reaction chamber (321) from exploding due to internal pressure.

8. The closed blood bag sampler according to claim 6, characterized in that: The pressing assembly (330) comprises a first cylinder (331) and a second cylinder (332); The first cylinder (331) and the second cylinder (332) are respectively located on two sides of the delivery pipeline (200); The second cylinder (332) comprises a cylinder body (3321), a piston (3322) and a push rod (3323); The cylinder (3321) is connected to the reaction chamber (321); The piston (3322) is inserted into the cylinder body (3321) and connected to the ejection rod (3323); An arc-shaped groove is provided on one end of the ejection rod (3323) away from the piston (3322); The piston (3322) and the ejection rod (3323) are made of heat-conducting materials; The reaction of the reaction chamber (321) is used to release heat and gas to heat and push the ejection rod (3323) so that the first cylinder (331) and the second cylinder (332) are close to each other.

9. The closed blood bag sampler according to claim 1, characterized in that: It comprises two heat sealing devices (300) arranged at an interval; After the heat sealing is completed, an area separated from the bag body (001) and the sampling bag (100) is formed between the two heat sealing devices (300) for separating the bag body (001) and the sampling bag (100).

10. The closed blood bag sampler according to claim 1, characterized in that: It also includes a plurality of groups of the transport pipelines (200) and the sampling bags (100).

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