Blood separating and sampling device

Abstract

The utility model relates to a blood separating and sampling device which comprises a test tube, the tube cap is detachably arranged on the test tube, a catheter is arranged on the tube cap, and the lower end of the catheter is located in the test tube; the sampling pipe is arranged in the guide pipe in a lifting manner, and a sampling channel is arranged in the sampling pipe; a flexible plug and a bottom end cover are respectively arranged at the upper end and the lower end of the sampling tube and are used for plugging the sampling channel; the flexible plug protrudes out of the upper end face of the pipe cap, and a sampling opening communicated with the sampling channel is formed in the lower end of the sampling pipe. When the sampling tube is in a closed state, the bottom end cover is propped against the conduit, so that liquid in the test tube is prevented from entering the conduit and the sampling channel; a needle tube is arranged at one end of the sampler, the sampling tube descends to enable the sampling opening to enter the liquid at the bottom of the test tube, and the needle tube pierces the flexible plug to suck the liquid in the test tube into the sampler. The utility model provides a blood separating and sampling device which can be used for carrying out sample collection on a specific layer of a centrifugally layered blood sample.

Description

Technical Field

[0001] The utility model relates to the technical field of medical detection equipment, in particular to a blood separation and sampling device. Background Art

[0002] Blood sampling is a common healthcare procedure that involves drawing at least one drop of blood from a patient. Blood samples are typically obtained from hospitalized, home care, and emergency room patients via a finger prick, heel stick, or venipuncture. Blood samples can also be obtained through a venous or arterial line. Once collected, the blood sample can be analyzed to obtain medically useful information, including, for example, chemical composition, hemogram, and coagulation.

[0003] When analyzing blood samples, a certain amount of blood sample is often placed in a test tube and then placed in a centrifuge for centrifugation. After centrifugation, the blood in the test tube is in a stratified state.

[0004] During the test, the liquid in the test tube is analyzed layer by layer by aspirating it layer by layer. When only the liquid in the bottom layer or a certain layer needs to be analyzed, the upper layer of liquid needs to be completely removed before the liquid sample of the specific layer can be collected. Therefore, the existing technology is not efficient in collecting samples of specific layers and the operation is relatively cumbersome. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a blood separation sampling device which can collect samples from a specific layer of a blood sample after centrifugation and stratification.

[0006] In order to solve the above problems, the technical solution adopted by the present invention is:

[0007] A blood separation and sampling device, comprising:

[0008] test tube;

[0009] a tube cap, detachably mounted on the test tube, with a conduit disposed thereon, the lower end of the conduit being located within the test tube;

[0010] A sampling tube is arranged in a liftable manner in the catheter, and a sampling channel is provided in the sampling tube; flexible plugs and bottom end caps are respectively provided at the upper and lower ends of the sampling tube for sealing the sampling channel; the flexible plug protrudes from the upper end surface of the tube cap, and a sampling port connected to the sampling channel is provided at the lower end of the sampling tube; when the sampling tube is in a closed state, the bottom end cap abuts against the catheter to prevent the liquid in the test tube from entering the catheter and the sampling channel;

[0011] A sampler is provided with a needle tube at one end, the sampling tube is lowered so that the sampling port enters the liquid at the bottom of the test tube, and the needle tube pierces the flexible plug to draw the liquid in the test tube into the sampler.

[0012] As an embodiment of the present application, a threaded portion is arranged at the upper portion of the sampling tube, a catheter threaded portion is arranged at the top of the catheter corresponding to the threaded portion, the threaded portion is screwed with the catheter threaded portion, and rotating the sampling tube can drive the sampling tube to rise and fall in the catheter.

[0013] As an embodiment of the present application, an upper sealing sleeve is arranged below the threaded portion on the sampling tube, and a lower sealing sleeve is arranged above the bottom end cover at the lower end of the sampling tube, the upper sealing sleeve and the lower sealing sleeve are in abutment with the inner wall of the catheter to block the catheter.

[0014] As an embodiment of the present application, a tube top portion is arranged above the threaded portion on the sampling tube, and the tube top portion protrudes from the cap;

[0015] An upper end of the tube top portion is provided with a tube top groove in communication with the sampling channel, and the flexible plug is embedded in the tube top groove to block the upper end of the sampling channel.

[0016] As an embodiment of the present application, a tab is arranged at one side of the tube top portion to assist the operator in rotating the sampling tube.

[0017] As an embodiment of the present application, the tab is connected with the cap through a connecting rib, a preset breaking point is arranged on the connecting rib, and after the preset breaking point is broken, the tab can rotate relative to the cap.

[0018] As an embodiment of the present application, a pop-up cap is arranged on the cap, a pull ring is arranged on the pop-up cap, the pop-up cap is separated from the cap by pulling the pull ring, and the cavity in the test tube is in communication with the outside.

[0019] As an embodiment of the present application, a test tube threaded portion is arranged at the top of the test tube, the cap is screwed with the test tube threaded portion, an annular limiting flange is arranged on the test tube corresponding to the test tube threaded portion, and the cap is in abutment to enable the cap to be screwed in place.

[0020] As an embodiment of the present application, the sampler is an injector, after the needle tube of the injector pierces the sampling channel, the piston rod of the injector is pulled to draw the liquid at the bottom of the test tube into the needle cylinder of the injector.

[0021] As an embodiment of the present invention, the sampler includes a negative pressure test tube, a capillary hose connected to the negative pressure test tube, and a needle tube connected to the capillary hose. After the needle tube pierces the sampling channel, the liquid at the bottom of the test tube is drawn into the negative pressure test tube by using negative pressure.

[0022] The beneficial effects of adopting the above technical solution are:

[0023] The test tube of the present application is provided with a catheter on the tube cap, and a sampling tube is provided in the catheter which can be raised and lowered. After the sampling tube is lowered, the sampling port at the bottom thereof enters a specific layer, and then the needle of the sampler pierces the flexible plug at the top of the sampling tube, so that the sampler and the sampling channel inside the sampling tube are connected. Then, the sampler can be used to suck the liquid of the specific layer into the sampler through the sampling port, the sampling channel, and the needle in sequence, thereby completing the sampling of the sample of the specific layer. This method does not need to take out the liquid on the upper layer of the specific layer layer by layer during sampling, thereby increasing the efficiency of sampling.

[0024] The tube cap of the present application is provided with an easy-open cover. When it is necessary to sample the upper liquid, it is only necessary to pull open the easy-open cover to achieve communication between the inside and outside of the test tube, and then the upper liquid in the test tube can be extracted, instead of opening the tube cap, thereby avoiding the contamination of the upper liquid caused by the rising of the catheter during the process of opening the tube cap.

[0025] The tube cap of the present application can be provided with a plurality of conduits, and sampling tubes can be provided in the conduits in a manner that can be raised and lowered, so that sampling of multiple layers of samples can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of this embodiment.

[0027] Figure 2 Schematic diagram of the structure of the test tube, tube cap and sampling tube of this embodiment.

[0028] Figure 3 yes Figure 2 A structural diagram from another angle.

[0029] Figure 4 Schematic diagram of the structure of the upper end of the sampling tube of this embodiment.

[0030] Figure 5 Schematic diagram of the structure of the lower end of the sampling tube of this embodiment.

[0031] Including: 100 test tube; 101 test tube thread portion; 102 limiting flange;

[0032] 200 pipe cap; 201 catheter; 202 catheter thread portion;

[0033] 300 easy-open lid;

[0034] 400 sampling tube;

[0035] 1 Upper sealing sleeve; 2 Threaded portion; 3 Tube top; 4 Pick; 5 Flexible plug; 6 Lower sealing sleeve; 7 Sampling port; 8 Bottom end cap. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described clearly and completely below in conjunction with specific embodiments.

[0037] like Figures 1 to 5 A blood separation sampling device is shown, comprising:

[0038] Test tube 100;

[0039] a tube cap 200 detachably mounted on the test tube 100 , on which a conduit 201 is mounted, the lower end of which is located within the test tube 100 ;

[0040] A sampling tube 400 is arranged in a liftable manner within the conduit 201. A sampling channel is provided within the sampling tube 400. Flexible plugs 5 and bottom end caps 8 are provided at the upper and lower ends of the sampling tube 400, respectively, for sealing the sampling channel. The flexible plug 5 protrudes beyond the upper end surface of the tube cap 200. A sampling port 7 communicating with the sampling channel is provided at the lower end of the sampling tube 400. When the sampling tube 400 is closed, the bottom end cap 8 abuts against the lower end surface of the conduit 201, preventing the liquid in the test tube 100 from entering the conduit 201 and the sampling port 7.

[0041] The sampler is provided with a needle at one end. The sampling tube 400 descends so that the sampling port 7 enters the liquid at the bottom of the test tube 100. The needle pierces the flexible plug 5 to draw the liquid in the test tube 100 into the sampler.

[0042] See also Figure 2 and Figure 3 The sampling tube 400 is provided with a threaded portion 2 on the upper portion, and a catheter threaded portion 202 is provided on the top of the catheter 201 corresponding to the threaded portion 2. The threaded portion 2 is threadedly connected to the catheter threaded portion 202. Rotating the sampling tube 400 can drive the sampling tube 400 to rise and fall in the catheter 201.

[0043] See also Figures 2 to 5An upper sealing sleeve 1 is provided on the sampling tube 400 below the threaded portion 2, and a lower sealing sleeve 6 is provided at the lower end of the sampling tube 400 above the bottom end cover 8. The upper sealing sleeve 1 and the lower sealing sleeve 6 both abut against the inner wall of the conduit 201 to seal the conduit 201, so that the sampling tube 400 can ensure the sealing of the conduit 201 in both the closed state and the descending state to prevent liquid from entering the conduit 201.

[0044] See also Figure 2 and Figure 4 The sampling tube 400 is provided with a tube top 3 above the threaded portion 2. The tube top 3 protrudes from the tube cap 200. A tube top groove communicating with the sampling channel is formed at the upper end of the tube top 3. The flexible plug 5 is embedded in the tube top groove to seal the upper end of the sampling channel.

[0045] See also Figure 2 and Figure 4 A paddle 4 is provided on one side of the tube top 3 to assist the operator in rotating the sampling tube 400. In this embodiment, the tube cap is made of PET. The paddle 4 is connected to the tube cap 200 via a connecting rib with a pre-set breaking point. Upon breaking of the pre-set breaking point, the paddle 4 can rotate relative to the tube cap 200, thereby ensuring that the sampling tube 400 is not accidentally rotated and liquid cannot enter the sampling channel when sampling at a specific level is not being performed.

[0046] See also Figure 2 and Figure 3 The tube cap 200 is provided with an easy-open cover 300, and the easy-open cover 300 is provided with a pull ring. By pulling the pull ring, the easy-open cover 300 is separated from the tube cap 200, so that the cavity in the test tube 100 is connected to the outside world, which is used for extracting the top layer of liquid in the test tube 100, adding reagents, and other operations.

[0047] See also Figures 1 to 3 The top of the test tube 100 is provided with a test tube thread portion 101, and the tube cap 200 is threadedly connected to the test tube thread portion 101. The test tube 100 is provided with an annular limiting flange 102 corresponding to the test tube thread portion 101, which is used for the tube cap 200 to abut against so that the tube cap 200 can be screwed into place.

[0048] Preferably, the sampler is a syringe. After the needle of the syringe pierces the sampling channel, the piston rod of the syringe is pulled to draw the liquid at the bottom of the test tube 100 into the barrel of the syringe.

[0049] Preferably, the sampler includes a negative pressure test tube, a capillary hose connected to the negative pressure test tube, and a needle tube connected to the capillary hose. After the needle tube pierces the sampling channel, the liquid at the bottom of the test tube 100 is drawn into the negative pressure test tube by using negative pressure.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A blood separation sampling device, characterized in that: It includes: Test tube (100); a tube cap (200) detachably mounted on the test tube (100), on which a conduit (201) is mounted, wherein the lower end of the conduit (201) is located within the test tube (100); A sampling tube (400) is arranged in a liftable manner in the conduit (201), and a sampling channel is provided in the sampling tube (400); a flexible plug (5) and a bottom end cover (8) are provided at the upper and lower ends of the sampling tube (400), respectively, for blocking the sampling channel; the flexible plug (5) protrudes from the upper end surface of the tube cap (200), and a sampling port (7) connected to the sampling channel is provided at the lower end of the sampling tube (400); when the sampling tube (400) is in a closed state, the bottom end cover (8) abuts against the conduit (201), thereby preventing the liquid in the test tube (100) from entering the conduit (201) and the sampling channel; The sampler has a needle at one end. The sampling tube (400) is lowered so that the sampling port (7) enters the liquid at the bottom of the test tube (100). The needle pierces the flexible plug (5) to draw the liquid in the test tube (100) into the sampler.

2. A blood separation sampling device according to claim 1, characterized in that: The upper portion of the sampling tube (400) is provided with a threaded portion (2), and the top of the catheter (201) is provided with a catheter threaded portion (202) corresponding to the threaded portion (2). The threaded portion (2) is threadedly connected to the catheter threaded portion (202). Rotating the sampling tube (400) can drive the sampling tube (400) to rise and fall in the catheter (201).

3. A blood separation sampling device according to claim 2, characterized in that: An upper sealing sleeve (1) is provided on the sampling tube (400) below the threaded portion (2), and a lower sealing sleeve (6) is provided at the lower end of the sampling tube (400) above the bottom end cover (8). Both the upper sealing sleeve (1) and the lower sealing sleeve (6) abut against the inner wall of the conduit (201) to seal the conduit (201).

4. A blood separation sampling device according to claim 2, characterized in that: A tube top (3) is provided on the sampling tube (400) above the threaded portion (2), and the tube top (3) protrudes from the tube cap (200); The upper end of the tube top (3) is provided with a tube top groove connected to the sampling channel, and the flexible plug (5) is embedded in the tube top groove to seal the upper end of the sampling channel.

5. A blood separation sampling device according to claim 4, characterized in that: A paddle (4) is provided on one side of the tube top (3) for assisting an operator in rotating the sampling tube (400).

6. A blood separation sampling device according to claim 5, characterized in that: The paddle (4) and the tube cap (200) are connected via a connecting rib, and a preset breaking point is provided on the connecting rib. After the preset breaking point breaks, the paddle (4) can rotate relative to the tube cap (200).

7. The blood separation sampling device according to claim 1, characterized in that: The tube cap (200) is provided with an easy-open cover (300), and the easy-open cover (300) is provided with a pull ring. By pulling the pull ring, the easy-open cover (300) is separated from the tube cap (200), so that the cavity in the test tube (100) is connected to the outside.

8. The blood separation sampling device according to claim 1, characterized in that: The top of the test tube (100) is provided with a test tube threaded portion (101), and the tube cap (200) is threadedly connected to the test tube threaded portion (101). The test tube (100) is provided with an annular limiting flange (102) corresponding to the test tube threaded portion (101) for abutting against the tube cap (200) so that the tube cap (200) is screwed into place.

9. The blood separation sampling device according to claim 1, characterized in that: The sampler adopts a syringe. After the needle of the syringe pierces the sampling channel, the piston rod of the syringe is pulled to draw the liquid at the bottom of the test tube (100) into the syringe barrel.

10. The blood separation sampling device according to claim 1, characterized in that: The sampler comprises a negative pressure test tube, a capillary hose connected to the negative pressure test tube, and a needle tube connected to the capillary hose. After the needle tube pierces the sampling channel, the liquid at the bottom of the test tube (100) is drawn into the negative pressure test tube by using negative pressure.

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