Flow guide type dried blood spot collecting mechanism

Abstract

The invention discloses a flow guide type dried blood spot collection mechanism which comprises a bottom collection sleeve, a blood collection piece, a connecting cylinder, a flow guide assembly, a collection air bag and a blood suction tube. Blood is automatically collected through the blood suction tube, then the collection air bag is connected to the upper end of the connecting cylinder in a sleeving mode to be closed, the adjusting ring body rotates and drives the two moving blocks to move upwards, the moving blocks drive the flow guide cylinder to move upwards through the connecting rod, and the upper end of the flow guide cylinder is connected to the periphery of the lower end of the blood suction tube in a sleeving mode; due to the fact that the guide cylinder is located over the blood sampling piece, when the vent hole is closed by hand and the collecting air bag is squeezed, blood can be dripped downwards from the blood suction tube through the guide cylinder, the blood can be dripped onto the blood sampling piece in an aligned mode, and stability and reliability of blood dripping are improved.

Description

Technical Field

[0001] The invention belongs to the field of dried blood spot collection, and in particular relates to a diversion type dried blood spot collection mechanism. Background Art

[0002] The dried blood spot detection technology is a technology that drips whole blood onto a filter paper, dries it, and forms a dried blood spot, which is then extracted to detect the analyte in the dried blood spot sample. The blood spot is usually collected by a micro-capillary connected to an air bag, and then dripped onto a blood collection card. When the blood on the blood collection card dries, a dried blood spot is formed. During the detection, the dried blood spot is placed in a suitable container, and the analyte is extracted with an appropriate extraction liquid, which is finally detected by a detection instrument. When the above structure adds whole blood to the blood-absorbing filter paper, when the air bag is squeezed, once the dripping acceleration is too fast or the dripping amount is large at the moment, the blood will drip onto other parts of the container, so that the filter paper does not absorb the predetermined volume of blood, affecting the subsequent test results. At the same time, the length of the blood suction tube is different for different test requirements, so it is necessary to adjust the blood suction tube conveniently and stably according to different lengths to improve the convenience and flexibility of use. Summary of the invention

[0003] In view of the above-mentioned deficiencies of the prior art, the present invention solves the problem of providing a diversion type dry blood spot collection mechanism which is stable in dripping blood, convenient in adjustment and flexible in use.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows: A guide type dry blood spot collection mechanism, comprising a bottom collection sleeve, a blood collection piece, a connecting tube, a guide assembly, a collection air bag, and a blood suction tube; a blood collection piece is installed in the middle of the upper end of the bottom collection sleeve; the bottom collection sleeve is installed at the lower end of the connecting tube; the lower end of the collection air bag is connected to the blood suction tube; a vent hole is provided on the side of the collection air bag; the collection air bag is plugged and installed at the upper end of the connecting tube and drives the blood suction tube to be inserted into the connecting tube; the guide assembly is installed on the connecting tube; the guide assembly comprises a guide tube, a connecting rod, a moving block, and an adjusting ring body; the upper and lower ends of the guide tube are open, and a connecting rod is installed on both sides of the guide tube; a moving block is installed on the outer end of the connecting rod; the moving block slides up and down and is clamped on the side of the connecting tube; the adjusting ring body is rotatably installed on the outer side of the surrounding of the connecting tube; the adjusting ring body rotates and drives the two moving blocks to move upward, and the moving block drives the guide tube to move upward through the connecting rod, and makes the upper end of the guide tube sleeved on the outer side of the surrounding of the lower end of the blood suction tube; the guide tube is located directly above the blood collection piece.

[0005] Furthermore, the guide assembly also includes a threaded column and a gear block; a driving ring groove is provided on the outer side of the connecting tube; an adjusting slide rail is respectively provided on both sides of the connecting tube; a moving block is respectively installed in the adjusting slide rail for sliding up and down; a threaded column is rotatably installed in the adjusting slide rail, and the threaded column is respectively screwed with the moving block; the upper end of the threaded column extends to the side of the driving ring groove; a gear block is installed on the upper end of the threaded column, and the gear block is located in the driving ring groove; the adjusting ring body is rotatably clamped and installed at the driving ring groove; the inner side of the adjusting ring body is meshed with the two gear blocks, and the adjusting ring body rotates and drives the two gear blocks to rotate.

[0006] Furthermore, positioning ring holes are respectively provided around the upper and lower sides of the driving ring groove; and the upper and lower sides of the adjusting ring body are respectively slidably installed in the positioning ring holes through limiting teeth.

[0007] Furthermore, the lower end of the guide tube is in a conical structure that is larger at the top and smaller at the bottom.

[0008] Furthermore, a positioning ring is provided on the outer sides of the collection air bag; the positioning ring abuts against the upper end of the connecting tube.

[0009] Furthermore, the longitudinal cross-section of the bottom collection sleeve is a U-shaped structure; the inner side surfaces around the upper end of the bottom collection sleeve are screwed to the lower end of the connecting tube through threads.

[0010] Furthermore, a containing ring body is provided in the middle of the upper end of the bottom collection sleeve; and the blood collection piece is installed in the containing ring body.

[0011] Furthermore, the blood suction tube is made of capillary glass tube material.

[0012] Furthermore, the blood collection sheet is a blood absorbing filter paper.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention automatically collects blood through a blood suction tube, and then the collection air bag is sleeved on the upper end of the connecting tube for sealing, and then the ring body is adjusted to rotate and drive the two moving blocks to move upward, and the moving blocks then drive the guide tube to move upward through the connecting rod, and the upper end of the guide tube is sleeved on the outer periphery of the lower end of the blood suction tube. Since the guide tube is located directly above the blood collection piece, when the vent is closed by hand and the collection air bag is squeezed, blood will drip downward from the blood suction tube through the guide tube, so that the blood can be aligned and dripped onto the blood collection piece, thereby improving the stability and reliability of blood dripping.

[0014] 2. The present invention can rotate the adjusting ring body to drive the gear block to rotate, and the two gear blocks respectively drive the threaded columns to rotate, and the threaded columns rotate and drive the moving block to move up and down, and then the moving block drives the guide tube to move up and down through the connecting rod. In this way, it can be conveniently adjusted up and down according to blood suction tubes of different lengths and capacities, and the use is more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 It is a schematic diagram of the split structure of the present invention.

[0017] Figure 3 It is a schematic structural diagram of the guide tube of the present invention being sleeved upwardly on the lower end of the blood suction tube.

[0018] Figure 4 For the present invention Figure 3 Schematic diagram of the local enlarged structure.

[0019] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure on one side. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] like Figures 1 to 5 As shown, a guide type dry blood spot collection mechanism comprises a bottom collection sleeve 1, a blood collection piece 2, a connecting tube 3, a guide assembly 4, a collection air bag 5, and a blood suction tube 6; the blood collection piece 2 is installed in the middle of the upper end of the bottom collection sleeve 1; the bottom collection sleeve 1 is installed at the lower end of the connecting tube 3; the lower end of the collection air bag 5 is connected to the blood suction tube 6; a vent hole is provided on the side of the collection air bag 5; the collection air bag 5 is plugged and installed at the upper end of the connecting tube 3 and drives the blood suction tube 6 to be inserted into the connecting tube 3; the guide assembly 4 is installed on the connecting tube 3; the guide assembly 4 comprises a guide tube 41, a connecting rod 42, and a moving block 43. , adjusting ring body 44; the upper and lower ends of the guide tube 41 are open, and a connecting rod 42 is respectively installed on both sides of the guide tube 41; a moving block 43 is respectively installed on the outer ends of the connecting rods 42; the moving blocks 43 are slidably connected to the side of the connecting tube 3 up and down; the adjusting ring body 44 is rotatably installed on the outer side of the connecting tube 3; the adjusting ring body 44 rotates and drives the two moving blocks 43 to move upward, and the moving blocks 43 drive the guide tube 41 to move upward through the connecting rod 42, and make the upper end of the guide tube 41 be sleeved on the outer side of the lower end of the blood suction tube 6; the guide tube 41 is located directly above the blood collection sheet 2.

[0022] like Figures 1 to 5As shown, in order to adjust the ring body 44 so that the guide tube 41 can be controlled to move up and down, further, the guide assembly 4 also includes a threaded column 45 and a gear block 46; a driving ring groove 31 is provided on the outer side of the connecting tube 3; an adjusting slide rail 32 is respectively provided on both sides of the connecting tube 3; a moving block 43 is respectively installed in the adjusting slide rail 32 for sliding up and down; a threaded column 45 is respectively rotatably installed in the adjusting slide rail 32, and the threaded column 45 is respectively threadedly screwed with the moving block 43; the upper end of the threaded column 45 extends to the side of the driving ring groove 31; a gear block 46 is installed on the upper end of the threaded column 45, and the gear block 46 is located in the driving ring groove 31; the adjusting ring body 44 is rotatably clamped and installed at the driving ring groove 31; the inner side of the adjusting ring body 44 is meshed with the two gear blocks 46, and the adjusting ring body 44 rotates and drives the two gear blocks 46 to rotate.

[0023] like Figures 1 to 5 As shown, in order to improve the stable rotation of the adjusting ring body 44, further, the upper and lower sides of the driving ring groove 31 are respectively provided with positioning ring holes 311; the upper and lower sides of the adjusting ring body 44 are respectively slidably installed in the positioning ring holes 311 through the limiting teeth 441. In order to improve the stability of the discharge, further, the lower end of the guide tube 41 is a conical structure with a larger upper part and a smaller lower part. In order to improve the plug-in stability of the collection airbag 5, further, the outer side of the collection airbag 5 is provided with a positioning ring 51; the positioning ring 51 is abutted against the upper end of the connecting tube 3. In order to facilitate the disassembly of the bottom collection sleeve 1 and take out the blood collection piece 2, further, the longitudinal section of the bottom collection sleeve 1 is a U-shaped structure; the inner side surface of the upper end of the bottom collection sleeve 1 is screwed to the lower end of the connecting tube 3. Further, the middle of the upper end of the bottom collection sleeve 1 is provided with a receiving ring body 11; the blood collection piece 2 is installed in the receiving ring body 11. Further, the blood suction tube 6 is made of capillary glass tube material. Further, the blood collection piece 2 is a blood suction filter paper.

[0024] The present invention automatically collects blood through the blood suction blood vessel 6, and then the collection air bag 5 is sleeved on the upper end of the connecting tube 3 to be closed, and then the two moving blocks 43 are driven to move upward by rotating the adjusting ring body 44, and the moving blocks 43 then drive the guide tube 41 to move upward through the connecting rod 42, and make the upper end of the guide tube 41 sleeved on the outside around the lower end of the blood suction blood vessel 6. Since the guide tube 41 is located directly above the blood collection piece 2, when the vent hole is closed by hand and the collection air bag 5 is squeezed, blood will drip downward from the blood suction blood vessel 6 through the guide tube 41, so that the blood can be aligned and dripped onto the blood collection piece 2, thereby improving the stability and reliability of blood dripping.

[0025] The present invention can rotate the adjusting ring body 44 to drive the gear block 46 to rotate, and the two gear blocks 46 respectively drive the threaded column 45 to rotate, and the threaded column 45 rotates and drives the moving block 43 to move up and down, and then the moving block 43 drives the guide tube 41 to move up and down through the connecting rod 42. In this way, the blood suction tube 6 of different lengths and capacities can be conveniently adjusted up and down, and the use is more flexible.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flow-guiding dry blood spot collection mechanism, characterized in that: The invention comprises a bottom collection sleeve, a blood collection piece, a connecting tube, a flow guide assembly, a collection air bag and a blood suction tube; a blood collection piece is installed in the middle of the upper end of the bottom collection sleeve; the bottom collection sleeve is installed at the lower end of the connecting tube; the lower end of the collection air bag is connected to the blood suction tube; a vent hole is provided on the side of the collection air bag; the collection air bag is plugged and installed at the upper end of the connecting tube and drives the blood suction tube to be inserted into the connecting tube; the flow guide assembly is installed on the connecting tube; the flow guide assembly comprises a flow guide tube, a connecting rod, a moving block and an adjusting ring body; the upper and lower ends of the flow guide tube are open, and a connecting rod is installed on both sides of the flow guide tube respectively; a moving block is installed on the outer end of the connecting rod respectively; the moving block slides up and down and is clamped on the side of the connecting tube; the adjusting ring body is rotatably installed on the outer side of the surrounding of the connecting tube; the adjusting ring body rotates and drives the two moving blocks to move upward, and the moving block drives the flow guide tube to move upward through the connecting rod, and makes the upper end of the flow guide tube sleeved on the outer side of the surrounding of the lower end of the blood suction tube; the flow guide tube is located directly above the blood collection piece.

2. The flow-guiding dry blood spot collection mechanism according to claim 1, characterized in that: The guide assembly also includes a threaded column and a gear block; a driving ring groove is provided on the outer side of the connecting tube; an adjusting slide rail is respectively provided on both sides of the connecting tube; a moving block is respectively installed in the adjusting slide rail for sliding up and down; a threaded column is rotatably installed in the adjusting slide rail, and the threaded column is respectively screwed with the moving block; the upper end of the threaded column extends to the side of the driving ring groove; a gear block is installed on the upper end of the threaded column, and the gear block is located in the driving ring groove; the adjusting ring body is rotatably clamped and installed at the driving ring groove; the inner side of the adjusting ring body is meshed with the two gear blocks, and the adjusting ring body rotates and drives the two gear blocks to rotate.

3. The flow-guiding dry blood spot collection mechanism according to claim 2, characterized in that: Positioning ring holes are respectively arranged around the upper and lower sides of the driving ring groove; the upper and lower sides of the adjusting ring body are respectively slidably installed in the positioning ring holes through limiting teeth.

4. The flow-guiding dry blood spot collection mechanism according to claim 1, characterized in that: The lower end of the guide tube is in a conical structure that is larger at the top and smaller at the bottom.

5. The flow-guiding dry blood spot collection mechanism according to claim 1, characterized in that: A positioning ring is arranged on the outer sides of the collecting air bag; the positioning ring abuts against the upper end of the connecting tube.

6. The flow-guiding dry blood spot collection mechanism according to claim 1, characterized in that: The longitudinal section of the bottom collection sleeve is in a U-shaped structure; the inner side surfaces around the upper end of the bottom collection sleeve are screwed to the lower end of the connecting tube through threads.

7. The flow-guiding dry blood spot collection mechanism according to claim 1, characterized in that: A containing ring body is arranged in the middle of the upper end of the bottom collection sleeve; the blood collection piece is installed in the containing ring body.

8. The flow-guiding dry blood spot collection mechanism according to claim 1, characterized in that: The blood suction tube is made of capillary glass tube material.

9. The flow-guiding dry blood spot collection mechanism according to claim 1, characterized in that: The blood collection sheet is a blood absorbing filter paper.

Images