Blood sampling device

Abstract

The utility model provides a blood sampling device, which comprises a vacuum blood sampling assembly, a blood sampling assembly and a blood sampling assembly, the vacuum blood sampling assembly comprises a vacuum blood sampling tube and a piston, one end of the vacuum blood sampling tube is provided with a blood sampling opening part, the piston is positioned in the blood sampling opening part, the piston is hermetically connected with the inner wall of the vacuum blood sampling tube, and the piston can move in the vacuum blood sampling tube; the transfer assembly comprises a boosting tube and a driving needle, the driving needle is located in the boosting tube, one end of the driving needle is provided with a needle head, the other end of the driving needle is provided with a connector, the needle head is communicated with the connector, and the needle head can penetrate through the piston and then is communicated with the interior of the vacuum blood collection tube. Due to the fact that the blood collecting device is provided with the vacuum blood collecting assembly and the transferring assembly, after the vacuum blood collecting assembly is used for collecting blood, the blood collected by the vacuum blood collecting assembly can be transferred into other containers through the transferring assembly, a piston in the vacuum blood collecting tube does not need to be opened in the transferring process, blood leakage is avoided, and the blood collecting efficiency is improved. And the risk that blood is polluted is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a blood collection device. Background Technology

[0002] The process of using a platelet-rich plasma (PRP) generator involves drawing blood from the patient and then transferring the collected blood into the PRP generator. Currently, vacuum blood collection tubes are generally used for blood collection.

[0003] After blood is collected using a vacuum blood collection tube, the rubber stopper inside the tube needs to be opened during transfer. Blood is then drawn using a syringe and injected into a platelet-rich plasma (PRP) generator. During this process, the blood is at risk of contamination due to exposure. Summary of the Invention

[0004] This utility model provides a blood collection device to solve the problems existing in related technologies. The technical solution is as follows:

[0005] This utility model embodiment provides a blood collection device, including:

[0006] The vacuum blood collection assembly includes a vacuum blood collection tube and a piston. One end of the vacuum blood collection tube has a blood collection opening, and the piston is located inside the blood collection opening. The piston is sealed to the inner wall of the vacuum blood collection tube and can move inside the vacuum blood collection tube.

[0007] The transfer assembly includes a booster tube and a drive needle. The drive needle is located inside the booster tube. One end of the drive needle has a needle tip, and the other end of the drive needle has a connecting connector. The needle tip communicates with the connecting connector and can pierce the piston to communicate with the inside of the vacuum blood collection tube.

[0008] In one embodiment, the vacuum blood collection assembly further includes:

[0009] The tube cap is fitted onto one end of the vacuum blood collection tube. The tube cap is detachably connected to the piston. After the piston is separated from the tube cap, the piston can move away from the tube cap inside the vacuum blood collection tube. The tube cap has a first through hole in the middle.

[0010] In one embodiment, the pipe cap has a fixed block and a deformable block in the middle, the deformable block is connected to the fixed block, the outer peripheral surface of the deformable block is provided with a retaining strip, the piston is provided with a retaining groove, the retaining groove matches the retaining strip, and the deformable block is made of elastic material.

[0011] In one embodiment, one end of the piston has a liquid collecting groove recessed towards the center of the piston, and the other end of the piston has a groove recessed towards the center of the piston, with a slot located on the inner circumferential surface of the groove.

[0012] In one embodiment, there are two deformation blocks arranged symmetrically on an axis, and a deformation groove is provided between the ends of the two deformation blocks. A fixing block is connected to the two deformation blocks respectively.

[0013] In one embodiment, there is a gap between the fixed block and the deformable block, and a connector is provided in the gap. The fixed block and the deformable block are connected by the connector. The middle part of the fixed block has a second through hole, and the first through hole is connected to the second through hole.

[0014] In one embodiment, the diameter of the driving pin is smaller than the inner diameter of the deformable block, and the diameter of the driving pin is larger than the inner diameter of the fixed block.

[0015] In one embodiment, the end of the booster tube near the needle has a booster opening, through which the vacuum blood collection tube can enter the booster tube.

[0016] In one embodiment, the connecting joint protrudes from the other end of the booster tube and is threaded to the other end of the booster tube. The other end of the booster tube has an exhaust hole and a lever is provided on the end of the booster tube near the needle.

[0017] In one embodiment, the transfer assembly further includes an upper cover and a lower cover, the upper cover being movably connected to the drive needle and enclosing the needle tip therein; the lower cover being detachably connected to the connector and enclosing the connector therein.

[0018] The advantages or beneficial effects of the above technical solutions include at least the following:

[0019] The blood collection device of this embodiment includes a vacuum blood collection component and a transfer component. The vacuum blood collection component includes a vacuum blood collection tube and a piston. The piston is sealed to the inner wall of the vacuum blood collection tube and can move inside the vacuum blood collection tube. The transfer component includes a push tube and a drive needle. The drive needle is located inside the push tube, and one end of the drive needle has a needle tip, while the other end has a connecting connector. In use, the vacuum blood collection tube can be pre-filled with anticoagulant. When collecting blood from a patient, the blood collection needle is inserted into the piston and connected to the inside of the vacuum blood collection tube, utilizing the negative pressure inside the tube for blood collection. After blood collection, the blood collection needle is removed from the piston, and the vacuum blood collection tube is placed to one side of the drive needle. The needle tip of the drive needle pierces the piston and connects to the inside of the vacuum blood collection tube. An injection needle or infusion needle is then connected to the connecting connector, and the needle tip of the injection needle or infusion needle is inserted into the container. Next, the vacuum blood collection tube is pressed. During this pressing process, the piston is pushed by the drive needle to move inside the blood collection tube. The blood collected inside the vacuum blood collection tube is then transported to the injection needle or infusion needle via the drive needle, and transferred to a container via the injection needle or infusion needle. Because this embodiment of the blood collection device includes a vacuum blood collection component and a transfer component, after blood is collected using the vacuum blood collection component, the blood collected by the vacuum blood collection component can be transferred to another container via the transfer component. During the transfer process, it is not necessary to open the piston inside the vacuum blood collection tube, thus avoiding blood leakage and reducing the risk of blood contamination.

[0020] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0021] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed according to this utility model and should not be construed as limiting the scope of this utility model.

[0022] Figure 1 This is a cross-sectional view of the blood collection device;

[0023] Figure 2 This is a schematic diagram of the vacuum blood collection assembly.

[0024] Figure 3 A cross-sectional view of the vacuum blood collection assembly;

[0025] Figure 4 An exploded view of the vacuum blood collection assembly;

[0026] Figure 5 This is a schematic diagram of the pipe cap structure;

[0027] Figure 6 This is a schematic diagram of the piston structure;

[0028] Figure 7 A cross-sectional view of the transfer component;

[0029] Figure 8 An exploded view of the transfer components;

[0030] Figure 9 A schematic diagram showing the blood collection device in use;

[0031] Figure 10 This is a schematic diagram of another usage state of the blood collection device;

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Vacuum blood collection assembly; 2. Transfer assembly; 11. Vacuum blood collection tube; 12. Piston; 13. Blood collection opening; 21. Push tube; 22. Drive needle; 221. Needle tip; 222. Connecting connector; 14. Tube cap; 141. First through hole; 15. Fixing block; 16. Deformation block; 161. Locking strip; 121. Locking groove; 162. Deformation groove; 17. Connector; 151. Second through hole; 122. Liquid collection tank; 123. Groove; 211. Push opening; 212. Vent hole; 213. Paddle; 23. Upper cover; 24. Lower cover; 231. Needle sheath; 232. Limiting protrusion; 233. Limiting groove; 241. Protective seat; 242. Protective groove; 3. Injection needle. Detailed Implementation

[0034] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0035] like Figures 1 to 10As shown, this embodiment of the present invention provides a blood collection device, including a vacuum blood collection assembly 1 and a transfer assembly 2. The vacuum blood collection assembly 1 includes a vacuum blood collection tube 11 and a piston 12. One end of the vacuum blood collection tube 11 has a blood collection opening 13, and the piston 12 is located inside the blood collection opening 13. The piston 12 is sealed to the inner wall of the vacuum blood collection tube 11 and can move inside the vacuum blood collection tube 11. The transfer assembly 2 includes a push tube 21 and a drive needle 22. The drive needle 22 is located inside the push tube 21. One end of the drive needle 22 has a needle tip 221, and the other end has a connecting connector 222. The needle tip 221 communicates with the connecting connector 222 and can pierce the piston 12 to communicate with the inside of the vacuum blood collection tube 11.

[0036] In use, the blood collection device of this embodiment can pre-fill the vacuum blood collection tube 11 with an anticoagulant. When collecting blood from a patient, the blood collection needle is inserted into the piston 12 and connected to the inside of the vacuum blood collection tube 11, utilizing the negative pressure inside the vacuum blood collection tube 11 for blood collection. After blood collection, the blood collection needle is removed from the piston 12, and the vacuum blood collection tube 11 is placed to one side of the driving needle 22. The needle tip 221 of the driving needle 22 pierces the piston 12 and connects to the inside of the vacuum blood collection tube 11. An injection needle 3 or an infusion needle is connected to the connecting connector 222, and the needle tip 221 of the injection needle 3 or infusion needle is inserted into the container. Then, the vacuum blood collection tube 11 is pressed. During the pressing process, the driving needle 22 pushes the piston 12 to move inside the blood collection tube. The blood collected inside the vacuum blood collection tube 11 is transported through the driving needle 22 to the injection needle 3 or infusion needle, and then transferred to the container through the injection needle 3 or infusion needle. The blood collection device of this utility model embodiment is equipped with a vacuum blood collection component 1 and a transfer component 2. After blood is collected using the vacuum blood collection component 1, the blood collected by the vacuum blood collection component 1 can be transferred to other containers through the transfer component 2. During the transfer process, it is not necessary to open the piston 12 inside the vacuum blood collection tube 11, thus avoiding blood leakage and reducing the risk of blood contamination.

[0037] Since the vacuum blood collection assembly 1 includes a vacuum blood collection tube 11 and a piston 12, the piston 12 can seal the inside of the vacuum blood collection tube 11, keeping the inside of the vacuum blood collection tube 11 in a sealed state. Using the vacuum blood collection tube 11 for negative pressure blood collection is convenient and quick, reducing blood collection time and improving the patient's blood collection experience. In one embodiment, the piston 12 can be press-fitted with the vacuum blood collection tube 11 to achieve a sealed connection between the piston 12 and the vacuum blood collection tube 11.

[0038] In one embodiment, the vacuum blood collection assembly 1 further includes a cap 14, which is fitted onto one end of the vacuum blood collection tube 11. The cap 14 is detachably connected to the piston 12. After the piston 12 is separated from the cap 14, the piston 12 can move away from the cap 14 inside the vacuum blood collection tube 11. The cap 14 has a first through hole 141 in the middle. Because the cap 14 has a first through hole 141 in the middle, the blood collection needle and needle tip 221 can be inserted into the piston 12 through the first through hole 141.

[0039] To achieve a detachable connection between the cap 14 and the piston 12, a fixing block 15 and a deformation block 16 are provided in the middle of the cap 14. The deformation block 16 is connected to the fixing block 15, and a retaining strip 161 is provided on the outer peripheral surface of the deformation block 16. A retaining groove 121 is provided on the piston 12, and the retaining groove 121 matches the retaining strip 161. The deformation block 16 is made of an elastic material. Preferably, both the deformation block 16 and the cap 14 can be made of an elastic material, such as silicone, rubber, or plastic.

[0040] In one embodiment, the deformable block 16 and the pipe cap 14 can be integrally formed, and the deformable block 16 and the pipe cap 14 can also be connected together by means of adhesive or other methods. The deformable block 16 also has a first through hole 141 in the middle, and the fixing block 15 is located inside the first through hole 141.

[0041] In one embodiment, there are two deformation blocks 16 arranged symmetrically along an axis. A deformation groove 162 is formed between the ends of the two deformation blocks 16. A fixing block 15 is connected to each of the two deformation blocks 16. When subjected to external force, the two deformation blocks 16 can deform and move closer to each other. Preferably, the cross-sections of the two deformation blocks 16 are semi-circular.

[0042] To connect the fixed block 15 and the deformable block 16, a gap is provided between them, and a connecting member 17 is provided within the gap. The fixed block 15 and the deformable block 16 are connected by the connecting member 17. Preferably, there are four connecting members 17, which are spaced apart from each other. The fixed block 15 is connected to one of the deformable blocks 16 through two of the connecting members 17, and the fixed block 15 is connected to the other deformable block 16 through the other two connecting members 17. The fixed block 15 has a second through hole 151 in the middle, and the first through hole 141 communicates with the second through hole 151.

[0043] Since the fixed block 15 and the deformable block 16 are connected by the connector 17, the fixed block 15 and the connector 17 support the deformable block 16 and prevent it from deforming. When the deformable block 16 is not deformed, the piston 12 can be fixed by connecting the retaining strip 161 on the deformable block 16 to the retaining groove 121 on the piston 12, thus preventing the piston 12 from moving inside the vacuum blood collection tube 11.

[0044] In one embodiment, one end of the piston 12 has a liquid collection groove 122 recessed into the middle of the piston 12, and the other end of the piston 12 has a groove 123 recessed into the middle of the piston 12. The slot 121 is located on the inner circumferential surface of the groove 123, and the fixing block 15 and the deformation block 16 are both placed inside the groove 123.

[0045] In one embodiment, the diameter of the driving pin 22 is smaller than the inner diameter of the deformable block 16, and the diameter of the driving pin 22 is larger than the inner diameter of the fixed block 15.

[0046] In one embodiment, the end of the booster tube 21 near the needle tip 221 has a booster opening 211, through which the vacuum blood collection tube 11 can enter the booster tube 21. Furthermore, since the diameter of the driving needle 22 is smaller than the inner diameter of the deformable block 16, and the diameter of the driving needle 22 is larger than the inner diameter of the fixing block 15, the vacuum blood collection tube 11 can be limited by the fixing block 15 when it enters the booster tube 21 through the booster opening.

[0047] The connecting connector 222 protrudes from the other end of the booster tube 21 and is threadedly connected to the other end of the booster tube 21. In one embodiment, the other end of the booster tube 21 has a vent hole 212, and the end of the booster tube 21 near the needle tip 221 has a lever 213. Preferably, there are two levers 213, which are arranged opposite to each other on the outer peripheral surface of one end of the booster tube 21.

[0048] Since an exhaust port 212 is provided at the other end of the booster tube 21, the transfer assembly 2 can discharge the air in the booster tube 21 through the exhaust port 212 during use, so as to avoid the resistance generated in the booster tube 21 due to the increase of air pressure.

[0049] To prevent the drive needle 22 from being contaminated before use, the transfer assembly 2 also includes an upper cover 23 and a lower cover 24. The upper cover 23 is movably connected to the drive needle 22 and encloses the needle tip 221 inside it; the lower cover 24 is detachably connected to the connector 222 and encloses the connector 222 inside it.

[0050] In one embodiment, the upper cover 23 has a needle sleeve 231 in the middle for use with the needle 221. The needle sleeve 231 is directly fitted over the outside of the needle 221, thereby enclosing the needle 221 inside. The upper cover 23 also has a limiting protrusion 232. After the upper cover 23 is fitted onto the driving needle 22, the needle 221 is placed inside the needle sleeve 231, and the upper surface of the driving needle 22 abuts against the limiting protrusion 232. The upper cover 23 also has a limiting groove 233, the inner diameter of which matches the outer diameter of the driving needle 22, and the limiting protrusion 232 is placed inside the limiting groove 233.

[0051] In one embodiment, the lower cover 24 has a protective seat 241 at one end and a protective groove 242 in the middle. The lower cover 24 can be directly fitted onto the connecting joint 222, which is located within the protective groove 242. After the lower cover 24 is fitted onto the connecting joint 222, the protective seat 241 fits against the bottom of the booster tube 21, and the protective seat 241 can seal the exhaust port 212.

[0052] The working principle of the blood collection device in this embodiment is as follows:

[0053] like Figure 1 , Figure 8 , Figure 9 As shown, when drawing blood from a patient, the blood collection needle is first inserted into the piston 12 and connected to the inside of the vacuum blood collection tube 11. Blood is then drawn using the negative pressure within the vacuum blood collection tube 11. At this time, the piston 12 is fixed by the tube cap 14 and will not move. After blood collection, the blood collection needle is removed from the piston 12, and the upper cap 23 and lower cap 24 of the transfer assembly 2 are removed. Then, the vacuum blood collection tube 11 is inverted, and the needle tip 221 is inserted through the piston 12 until the fixing block 15 abuts against the upper surface of the drive needle 22. Next, an injection needle 3 or an infusion needle is connected to the connecting connector 222, and the needle tip 221 of the injection needle 3 or infusion needle is inserted into the container.

[0054] Using two fingers to grasp the two levers 213 on the push tube 21, press the vacuum blood collection tube 11 downwards. The drive needle 22 pushes the fixing block 15 and piston 12 upwards, thereby breaking the connector 17 between the fixing block 15 and the deformable block 16. After further pressing the vacuum blood collection tube 11, the drive needle 22 pushes the fixing block 15 and piston 12 upwards. The piston 12 is subjected to an upward thrust, and the piston 12 squeezes the deformable block 16, causing the deformable block 16 to contract and deform inwards, and the retaining strip 161 disengages from the retaining groove 121. At this time, the piston 12 can move inside the vacuum blood collection tube 11. As the piston 12 moves inside the vacuum blood collection tube 11 towards the other end of the vacuum blood collection tube 11, the pressure inside the vacuum blood collection tube 11 increases, and the blood is transported to the container through the drive needle 22, thereby completing the transfer of blood in the vacuum blood collection tube 11.

[0055] In this embodiment, blood can be collected using a vacuum blood collection tube 11, and the blood inside the vacuum blood collection tube 11 can be transferred to another container using the transfer assembly 2. During both blood collection and transfer, it is not necessary to open the piston 12, reducing the risk of blood contamination inside the vacuum blood collection tube 11. The blood transfer process is convenient and quick, and does not require operation on a clean bench.

[0056] It should be noted that the connecting member 17 of this utility model can be made of materials such as plastic or rubber. Its dimensions have been tested to ensure that it can support the deformable block 16, and that the connecting member 17 can be destroyed when the fixed block 15 is subjected to an upward thrust. The piston 12 of this utility model can also be made of materials such as rubber or silicone.

[0057] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0059] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A blood collection device, characterized in that, include: A vacuum blood collection assembly includes a vacuum blood collection tube and a piston. One end of the vacuum blood collection tube has a blood collection opening. The piston is located inside the blood collection opening and is sealed to the inner wall of the vacuum blood collection tube. The piston can move inside the vacuum blood collection tube. The transfer assembly includes a booster tube and a drive needle. The drive needle is located inside the booster tube. One end of the drive needle has a needle tip, and the other end of the drive needle has a connecting connector. The needle tip communicates with the connecting connector and can pierce the piston and communicate with the inside of the vacuum blood collection tube.

2. The blood collection device according to claim 1, characterized in that, The vacuum blood collection assembly also includes: A cap is fitted onto one end of the vacuum blood collection tube. The cap is detachably connected to the piston. After the piston is separated from the cap, the piston can move inside the vacuum blood collection tube away from the cap. The cap has a first through hole in the middle.

3. The blood collection device according to claim 2, characterized in that, The tube cap is provided with a fixing block and a deformation block in the middle. The deformation block is connected to the fixing block. A retaining strip is provided on the outer circumference of the deformation block. A retaining groove is provided on the piston. The retaining groove matches the retaining strip. The deformation block is made of elastic material.

4. The blood collection device according to claim 3, characterized in that, One end of the piston has a liquid collection groove recessed towards the center of the piston, and the other end of the piston has a groove recessed towards the center of the piston. The slot is located on the inner circumferential surface of the groove.

5. The blood collection device according to claim 3, characterized in that, There are two deformation blocks, which are arranged symmetrically on an axis. There is a deformation groove between the ends of the two deformation blocks. The fixing block is connected to the two deformation blocks respectively.

6. The blood collection device according to claim 3, characterized in that, There is a gap between the fixed block and the deformable block, and a connector is provided in the gap. The fixed block and the deformable block are connected by the connector. The middle part of the fixed block has a second through hole, and the first through hole is connected to the second through hole.

7. The blood collection device according to claim 3, characterized in that, The diameter of the driving pin is smaller than the inner diameter of the deformable block, and the diameter of the driving pin is larger than the inner diameter of the fixed block.

8. The blood collection device according to any one of claims 1 to 7, characterized in that, The booster tube has a booster opening at one end near the needle, through which the vacuum blood collection tube can enter the booster tube.

9. The blood collection device according to any one of claims 1 to 7, characterized in that, The connecting joint protrudes from the other end of the booster tube and is threaded to the other end of the booster tube. The other end of the booster tube has an exhaust hole and a lever is provided on the end of the booster tube near the needle.

10. The blood collection device according to any one of claims 1 to 7, characterized in that, The transfer assembly also includes an upper cover and a lower cover, the upper cover being movably connected to the drive needle, and the upper cover enclosing the needle tip inside it; The lower cover is detachably connected to the connecting joint, and the lower cover encloses the connecting joint inside it.

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