Sample collection device convenient for monitoring blood concentration of human body

Abstract

The invention discloses a sample collection device convenient for human body blood concentration monitoring, which comprises a blood collection indwelling needle, a soft connecting tube, a three-way connecting piece, an infusion tube, a soft drainage tube and a vacuum blood collection tube, the three-way connecting piece comprises a packaging shell, the interior of the packaging shell is fixedly connected with two isolation plates, and a circulation space is formed between the two isolation plates; a communicating port A, a communicating port B and a communicating port C are fixedly communicated with the outside of the circulation space, the tail end of the infusion tube and the head end of the soft drainage tube are fixedly connected with communicating conical heads, and the tail end of the soft drainage tube is fixedly communicated with a bottle plug puncture head. When blood sampling is carried out in the midway of transfusion, the plugging block can open the blood sampling channel and block the transfusion channel by directly connecting the soft drainage tube to the communication port C, so that transfusion can be stopped and blood sampling can be carried out without other operations for switching the communication relationship among the soft connection tube, the transfusion tube and the soft drainage tube; therefore, medical staff can be assisted in quickly collecting blood samples.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sample preservation, in particular to a sample collection device for monitoring human blood drug concentration. BACKGROUND

[0002] Blood drug concentration monitoring is guided by pharmacokinetic principles, analyzes and determines the concentration of drugs in blood to evaluate efficacy or determine dosing regimens, individualizes dosing regimens to improve drug treatment level, and achieves safe, effective and reasonable drug use in clinic. Blood drug concentration monitoring requires blood sample collection from patients after taking medicine. The time point of blood sample collection is usually within 1-2 hours after taking medicine, and standard vacuum blood collection tubes are required, usually 2-3 milliliters of sample.

[0003] After searching, the utility model patent with Chinese patent number CN 214907018 U discloses a sample collection device for monitoring human blood drug concentration, which comprises an infusion tube, a medical three-way valve, a flow guide pipe, a blood collection tube, a connecting pipe and a needle. The tail of the needle is provided with a connecting pipe, the other end of the connecting pipe is provided with a medical three-way valve, and the infusion tube is connected to the medical three-way valve and installed on the opposite side of the connecting pipe. Compared with the prior art, the utility model patent with Chinese patent number CN 214907018 U can analyze the blood drug concentration by the blood in the blood collection tube, detect the blood drug concentration, and reduce the pain of patients without the need for secondary blood sampling. It is more convenient to collect blood and is convenient for multiple blood collection.

[0004] However, the above-mentioned sample collection device for monitoring human blood drug concentration needs to be manually rotated by medical staff to switch the connection relationship between the connecting pipe, the infusion tube and the flow guide pipe when selecting infusion or blood collection, and cannot automatically switch the connection relationship between the connecting pipe, the infusion tube and the flow guide pipe, thereby limiting the blood collection speed. Therefore, a sample collection device for monitoring human blood drug concentration is needed to assist medical staff to quickly collect blood samples. SUMMARY

[0005] The purpose of the present application is to solve the problem that the prior art cannot automatically switch the connection relationship between the connecting pipe, the infusion tube and the flow guide pipe, thereby limiting the blood collection speed. A sample collection device for monitoring human blood drug concentration is provided.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0007] A sample collection device for easy monitoring of human blood drug concentration includes a blood collection needle, a flexible connecting tube, a three-way connector, an infusion tube, a flexible drainage tube, and a vacuum blood collection tube. The three-way connector includes a sealing shell for encapsulation. Two isolation plates are fixedly connected inside the sealing shell, forming a flow space between the two isolation plates and a receiving space between the two isolation plates and the sealing shell. The flow space is externally connected to a connecting port A, a connecting port B, and a connecting port C. The connecting port A is fixedly connected to the flexible connecting tube. Rubber connecting tubes are fixedly connected to the outside of both the connecting port B and the connecting port C. A connecting conical head that can enter the interior of the rubber connecting tube is fixedly connected to the end of the infusion tube and the beginning of the flexible drainage tube. A bottle stopper puncture head that can enter the interior of the vacuum blood collection tube is fixedly connected to the end of the flexible drainage tube.

[0008] The above technical solution further includes:

[0009] The blood collection indwelling needle is fixedly connected to the flexible connecting tube, the flexible connecting tube is fixedly connected to the A connecting port, the A connecting port and the B connecting port are positioned opposite each other, the infusion tube is detachably connected to the B connecting port, and the flexible drainage tube is detachably connected to the C connecting port and the vacuum blood collection tube.

[0010] The circulation space is fixedly connected with sealing block A, sealing block B and sealing block C. The circulation space is provided with three sealing plates for sealing the A connection port, the B connection port and the C connection port. Sealing gaskets are fixedly connected to the inner side of each of the three sealing plates. A blocking block is fixedly connected to the outer side of the sealing plate inside the C connection port.

[0011] When the sealing plate inside the C-connector is closed, the sealing block comes into contact with the A-sealing block and the C-sealing block; when the sealing plate inside the C-connector is open, the sealing block comes into contact with the B-sealing block and the C-sealing block.

[0012] An infusion channel is formed between the A-connecting port, the A-sealing block, the B-sealing block, the blocking block, the C-sealing block, and the B-connecting port. A blood collection channel is formed between the A-sealing block, the B-sealing block, the blocking block, the C-sealing block, and the C-connecting port. The medication inside the infusion tube can enter the patient's body through the infusion channel, the A-connecting port, the flexible connecting tube, and the blood collection indwelling needle. Blood can enter the vacuum blood collection tube through the blood collection indwelling needle, the flexible connecting tube, the A-connecting port, the blood collection channel, the C-connecting port, and the flexible drainage tube.

[0013] All three sealing plates are rotatably connected inside the flow space via rotating rods, the ends of the three rotating rods extend rotatably into the interior of the receiving space, and a return torsion spring is fixedly connected to the outside of each of the three rotating rods.

[0014] Connecting discs are fixedly connected to the ends of the two rotating rods near the A and B connecting ports. A gear ring is provided on the outside of the connecting disc. The gear ring is rotatably connected to the inside of the accommodating space through a rotating cylinder. A one-way driving member is provided between the symmetrical connecting disc and the gear ring. The connecting disc near the B connecting port can drive the gear ring on its outside clockwise through the one-way driving member. The gear ring near the A connecting port can drive the connecting disc on its inside clockwise through the one-way driving member.

[0015] The one-way drive component includes a sliding groove and a drive groove symmetrically formed on the outer side of the connecting plate and the inner side of the gear ring. A one-way drive block located inside the drive groove is slidably connected inside the sliding groove. A return spring is fixedly connected between the one-way drive block and the sliding groove. When the connecting infusion tube is inserted into the B-connecting port, the connecting conical head at its end abuts against the sealing gasket, causing the sealing plate outside to drive the rotating rod and the connecting plate to rotate clockwise. The connecting plate then drives the gear ring outside to rotate clockwise through the one-way drive component.

[0016] The interior of the accommodating space is symmetrically connected to a rotating shaft, and an incomplete gear is fixedly connected to the end of the rotating shaft. The incomplete gear can rotate counterclockwise and mesh with an external gear ring. A synchronous driving element is provided between the symmetrical rotating shafts. The two rotating shafts and the two incomplete gears rotate synchronously through the synchronous driving element.

[0017] An iron plate is embedded on the outer side of the sealing plate near the A-connection port. An electromagnetic plate that can attract the iron plate when energized is fixedly embedded on the outer side of the A-sealing block. A touch switch connected to the electromagnetic plate is embedded on the outer side of the C-sealing block. A battery module connected to the touch switch is disposed inside the accommodating space. When a soft drain tube is inserted into the C-connection port, the connecting conical head at its end abuts against the sealing gasket, causing the sealing plate to activate the touch switch, which energizes the electromagnetic plate, thereby opening the sealing plate outside the A-connection port.

[0018] The present invention has the following beneficial effects:

[0019] 1. This invention automatically opens both the B and A ports by directly connecting the infusion tube at the B port, allowing the medication inside the infusion tube to enter the patient's body for infusion through the B port, infusion channel, A port, flexible connecting tube, and blood collection indwelling needle.

[0020] 2. This invention automatically opens both the C and A ports by directly connecting a soft drainage tube to the C port without affecting the A port. This allows blood to pass through the blood collection needle, soft connecting tube, A port, blood collection channel, C port, soft drainage tube, and bottle stopper puncture head into the vacuum blood collection tube for blood collection.

[0021] 3. When blood is drawn during infusion, the present invention allows the sealing block to contact the sealing blocks B and C by directly connecting a soft drainage tube at the C-connector, thereby triggering a switch. This causes the sealing block to open the blood collection channel and block the infusion channel, thus stopping the infusion and allowing blood to be drawn. By removing the soft drainage tube from the C-connector, the C-connector and the blood collection channel are closed, and the infusion channel is opened, thus stopping blood drawing and allowing the infusion to continue.

[0022] In summary, this invention eliminates the need for additional operations to switch the connections between the flexible connecting tube, infusion tube, and flexible drainage tube, thereby assisting medical personnel in quickly collecting blood samples. Attached Figure Description

[0023] Figure 1 This is a split diagram of a sample collection device for easy monitoring of human blood drug concentration proposed in this invention;

[0024] Figure 2 This is a schematic diagram of the first structure of the tee connector in this invention;

[0025] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0026] Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point B;

[0027] Figure 5 This is a schematic diagram of the second structure of the tee connector in this invention;

[0028] Figure 6 This is a schematic diagram of the third structure of the tee connector in this invention;

[0029] Figure 7 This is a schematic diagram of the structure of the present invention without the infusion tube and the soft drainage tube connected;

[0030] Figure 8 This is a schematic diagram of the structure of the infusion tube of the present invention;

[0031] Figure 9 This is a schematic diagram of the structure of the flexible drainage tube of the present invention;

[0032] Figure 10 This is a schematic diagram of the structure of the present invention, which connects the infusion tube and the flexible drainage tube simultaneously.

[0033] In the diagram: 1. Blood collection indwelling needle; 2. Flexible connecting tube; 3. T-connector; 30. Encapsulation shell; 31. Isolation plate; 32. Flow space; 33. Receiving space; 34. A connecting port; 35. B connecting port; 36. C connecting port; 37. Rubber connecting tube; 38. A sealing block; 39. B sealing block; 40. C sealing block; 41. Sealing plate; 42. Sealing gasket; 43. Blocking block; 44. Infusion channel; 45. Blood collection channel; 46. Rotating rod; 47. 48. Reset torsion spring; 49. Connecting disc; 50. Gear ring; 51. Rotating cylinder; 52. One-way drive component; 53. Sliding groove; 54. Drive groove; 55. One-way drive block; 56. Reset spring; 57. Rotating shaft; 58. Incomplete gear; 59. Synchronous drive component; 50. Connecting iron plate; 51. Electromagnetic plate; 52. Touch switch; 53. Battery module; 4. Infusion tube; 54. Soft drainage tube; 55. Vacuum blood collection tube; 66. Connecting conical head; 77. Bottle stopper puncture head. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figures 1-10 As shown, the present invention proposes a sample collection device for easy monitoring of human blood drug concentration, including a blood collection indwelling needle 1, a flexible connecting tube 2, a three-way connector 3, an infusion tube 4, a flexible drainage tube 5, and a vacuum blood collection tube 6. The blood collection indwelling needle 1 is fixedly connected to the flexible connecting tube 2, and the blood collection indwelling needle 1 and the flexible connecting tube 2 can be fixed to the patient's blood collection skin with medical tape.

[0036] The three-way connector 3 includes a packaging shell 30 for encapsulation. Two isolation plates 31 are fixedly connected inside the packaging shell 30, forming a flow space 32 between the two isolation plates 31. A receiving space 33 is formed between the two isolation plates 31 and the packaging shell 30. The flow space 32 is fixedly connected to an A-port 34, a B-port 35, and a C-port 36. The A-port 34 and the B-port 35 are positioned opposite each other. The A-port 34 is fixedly connected to the flexible connecting tube 2. The B-port 35 and the C-port 36 are both fixedly connected to rubber connecting tubes 37. The end of the infusion tube 4 and the beginning of the flexible drainage tube 5 are both fixedly connected to a connecting conical head 7 that can enter the interior of the rubber connecting tube 37. That is, the flexible connecting tube 2 is fixedly connected to the A-port 34, the infusion tube 4 is detachably connected to the B-port 35, and the end of the flexible drainage tube 5 is fixedly connected to a bottle stopper puncture head 8 that can enter the interior of the vacuum blood collection tube 6. The flexible drainage tube 5 is detachably connected to the C-port 36 and the vacuum blood collection tube 6.

[0037] Inside the flow space 32, sealing blocks A 38, B 39, and C 40 are fixedly connected. Three sealing plates 41 are also installed inside the flow space 32 to seal the A-connection port 34, B-connection port 35, and C-connection port 36. Sealing gaskets 42 are fixedly connected to the inner sides of each of the three sealing plates 41. Initially, the three sealing plates 41 seal the inner sides of the A-connection port 34, B-connection port 35, and C-connection port 36, respectively. A blocking block 43 is fixedly connected to the outer side of the sealing plate 41 inside the C-connection port 36. When the sealing plate 41 inside the C-connection port 36 closes, the blocking block 43 contacts the A-connection block 38 and the C-connection block 40, thus opening the infusion channel 44 and opening the sealing plate 41 inside the C-connection port 36. This allows the blocking block 43 to contact the sealing blocks 39 and 40, i.e., the blood collection channel 45 is open and the infusion channel 44 is closed. The infusion channel 44 is formed between the A connecting port 34, the A sealing block 38, the B sealing block 39, the blocking block 43, the C sealing block 40 and the B connecting port 35. The medication inside the infusion tube 4 can enter the patient's body through the infusion channel 44, the A connecting port 34, the flexible connecting tube 2 and the blood collection indwelling needle 1. The blood collection channel 45 is formed between the A sealing block 38, the B sealing block 39, the blocking block 43, the C sealing block 40 and the C connecting port 36. Blood can enter the vacuum blood collection tube 6 through the blood collection indwelling needle 1, the flexible connecting tube 2, the A connecting port 34, the blood collection channel 45, the C connecting port 36 and the flexible drainage tube 5.

[0038] Three sealing plates 41 are rotatably connected to the interior of the flow space 32 via rotating rods 46. The ends of the three rotating rods 46 extend rotatably into the interior of the receiving space 33. A return torsion spring 47 is fixedly connected to the exterior of each of the three rotating rods 46. A connecting plate 48 is fixedly connected to the ends of the two rotating rods 46 closest to the A connecting port 34 and the B connecting port 35. A gear ring 49 is provided on the exterior of the connecting plate 48. The gear ring 49 is rotatably connected to the interior of the receiving space 33 via a rotating cylinder 50. A one-way driving element 51 is provided between the symmetrical connecting plate 48 and the gear ring 49. The one-way driving element 51 includes a sliding groove 510 and a driving groove 511 symmetrically formed on the outer side of the connecting plate 48 and the inner side of the gear ring 49. The internal sliding connection of 10 is a one-way driving block 512 located inside the driving groove 511. A return spring 513 is fixedly connected between the one-way driving block 512 and the sliding groove 510. The connecting plate 48 near the B connection port 35 can drive the gear ring 49 outside it clockwise through the one-way driving member 51. That is, when the connecting infusion tube 4 is inserted into the B connection port 35, the connecting cone head 7 at its end abuts against the sealing gasket 42, so that the sealing plate 41 outside it drives the rotating rod 46 and the connecting plate 48 to rotate clockwise. The connecting plate 48 then drives the gear ring 49 outside it to rotate clockwise through the one-way driving member 51. The gear ring 49 near the A connection port 34 can drive the connecting plate 48 inside it clockwise through the one-way driving member 51.

[0039] The interior of the accommodating space 33 is symmetrically connected to rotating shafts 52. An incomplete gear 53 is fixedly connected to the end of each rotating shaft 51. The incomplete gear 53 can rotate counterclockwise and mesh with its external gear ring 49. A synchronous drive 54 is provided between the symmetrical rotating shafts 51, allowing the two rotating shafts 51 and the two incomplete gears 53 to rotate synchronously. A connecting iron plate 55 is embedded on the outer side of the sealing plate 41 near the A-connection port 34, and an electrically conductive... The electromagnetic plate 56 adsorbs the connecting iron plate 55. A touch switch 57 connected to the electromagnetic plate 56 is embedded on the outside of the C sealing block 40. A battery module 58 connected to the touch switch 57 is installed inside the accommodating space 33. When the soft drain tube 5 is inserted into the C connecting port 36, the connecting conical head 7 at its end abuts against the sealing gasket 42, so that the sealing plate 41 outside it touches the touch switch 57, so that the electromagnetic plate 56 is energized to adsorb the connecting iron plate 55, thereby opening the sealing plate 41 outside the A connecting port 34.

[0040] In this embodiment: as follows Figure 7 As shown, A connecting port 34, B connecting port 35 and C connecting port 36 are all sealed by the sealing gasket 42 and sealing plate 41 on their inner sides;

[0041] like Figure 7 and Figure 8As shown, when the connecting infusion tube 4 is inserted into the B-connecting port 35, its end connecting conical head 7 abuts against the sealing gasket 42 and the sealing plate 41, causing the sealing plate 41 to open and drive the rotating rod 46 and the connecting plate 48 to rotate clockwise. The clockwise rotating connecting plate 48 then drives its external gear ring 49 to rotate clockwise through the one-way drive member 51. The clockwise rotating gear ring 49 drives its external incomplete gear 53 to rotate counterclockwise. Through the action of the synchronous drive member 54, the incomplete gear 53 near the A-connecting port 34 rotates counterclockwise synchronously, making... The gear ring 49 near the A connection port 34 rotates clockwise. The clockwise rotation of the gear ring 49 drives the connecting plate 48 inside it to rotate clockwise through the one-way drive 51. The connecting plate 48 then drives the sealing plate 41 inside the A connection port 34 to rotate clockwise through the rotating rod 46 and open. That is, connecting the infusion tube 4 will automatically open the B connection port 35 and the A connection port 34, so that the medicine inside the infusion tube 4 can enter the patient's body through the B connection port 35, the infusion channel 44, the A connection port 34, the flexible connecting tube 2 and the blood collection indwelling needle 1 for infusion.

[0042] When it is necessary to stop the infusion, disconnect the connecting conical head 7 that connects the infusion tube 4 and its end from the B connection port 35. This will reset the sealing plate 41 inside the B connection port 35 and the A connection port 34, thus closing the B connection port 35 and the A connection port 34.

[0043] like Figure 7 and Figure 9 As shown, when the flexible drainage tube 5 is inserted into the C-connecting port 36, its end connecting conical head 7 will abut against the sealing gasket 42 and the sealing plate 41, causing the outer sealing plate 41 to drive the sealing block 43 to contact the B sealing block 39 and the C sealing block 40, and trigger the touch switch 57 on the outside of the C sealing block 40, so that the electromagnetic plate 56 is energized and attracts the connecting iron plate 55, thereby causing the sealing plate 41 inside the A-connecting port 34 to rotate clockwise and open, and the sealing plate 41 inside the A-connecting port 34 rotates clockwise and opens. During the clockwise rotation of the hand, the external connecting plate 48 rotates clockwise as well, while the external gear ring 49 remains unaffected. This means that connecting the soft drainage tube 5 automatically opens the C connection port 36 and the A connection port 34 without affecting the A connection port 34. This allows blood to pass through the blood collection indwelling needle 1, soft connecting tube 2, A connection port 34, blood collection channel 45, C connection port 36, soft drainage tube 5, and bottle stopper puncture head 8 into the vacuum blood collection tube 6 for blood collection.

[0044] When blood collection needs to be stopped, the soft drainage tube 5 and its end connecting cone head 7 are pulled out from the C connecting port 36, which will reset the sealing plate 41 inside the C connecting port 36 and the A connecting port 34, thus closing the C connecting port 36 and the A connecting port 34. During the reset process of the sealing plate 41, the connecting plate 48 will be driven to rotate counterclockwise through the rotating rod 46. The counterclockwise rotating connecting plate 48 will drive the gear ring 49 outside it to rotate counterclockwise through the one-way drive member 51. The counterclockwise rotating gear ring 49 will drive the incomplete gear 53 outside it to rotate clockwise. Through the action of the synchronous drive member 54, the incomplete gear 53 near the B connecting port 35 will rotate clockwise synchronously, while the connecting plate 48 inside it will not be affected.

[0045] like Figure 8 and Figure 10 As shown, when blood is drawn during infusion, the connecting cone 7 at the end of the soft drainage tube 5 can be directly inserted into the C connecting port 36, so that it abuts against the sealing plate 41 inside the C connecting port 36, so that the blocking block 43 contacts the B sealing block 39 and the C sealing block 40 and triggers the trigger switch 57, thereby opening the blood collection channel 45 and blocking the infusion channel 44. The electromagnetic plate 56 is energized to maintain the open state of the sealing plate 41 inside the A connecting port 34, so that the infusion can be stopped and blood can be drawn.

[0046] When blood collection is completed and infusion needs to continue, the soft drainage tube 5 and its end connecting cone head 7 are pulled out from the C-connector 36. This will reset the sealing plate 41 and the blocking block 43 inside the C-connector 36, closing the C-connector 36 and the blood collection channel 45 and opening the infusion channel 44, thus allowing infusion to continue.

[0047] This sample collection device for monitoring human blood drug concentration does not require any other operation to switch the connection between the flexible connecting tube 2, the infusion tube 4 and the flexible drainage tube 5, thereby assisting medical personnel to quickly collect blood samples.

[0048] Project source: Bi Kehe Major Special Project

[2023] No. 2-3.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sample collection device for easy monitoring of human blood drug concentration, comprising a blood collection indwelling needle (1), a flexible connecting tube (2), a three-way connector (3), an infusion tube (4), a flexible drainage tube (5), and a vacuum blood collection tube (6), characterized in that: The three-way connector (3) includes a packaging shell (30) for encapsulation. Two isolation plates (31) are fixedly connected inside the packaging shell (30). A flow space (32) is formed between the two isolation plates (31). A receiving space (33) is formed between the two isolation plates (31) and the packaging shell (30). An A connection port (34), a B connection port (35), and a C connection port (36) are fixedly connected to the outside of the flow space (32). The A connection port (34) is fixedly connected to the flexible connecting tube (2). A rubber connecting tube (37) is fixedly connected to the outside of both the B connection port (35) and the C connection port (36). A connecting conical head (7) that can enter the inside of the rubber connecting tube (37) is fixedly connected to the end of the infusion tube (4) and the beginning of the flexible drainage tube (5). A bottle stopper puncture head (8) that can enter the inside of the vacuum blood collection tube (6) is fixedly connected to the end of the flexible drainage tube (5).

2. The sample collection device for convenient monitoring of human blood drug concentration according to claim 1, characterized in that: The blood collection indwelling needle (1) is fixedly connected to the flexible connecting tube (2), the flexible connecting tube (2) is fixedly connected to the A connecting port (34), the A connecting port (34) and the B connecting port (35) are opposite to each other, the infusion tube (4) is detachably connected to the B connecting port (35), and the flexible drainage tube (5) is detachably connected to the C connecting port (36) and the vacuum blood collection tube (6).

3. The sample collection device for convenient monitoring of human blood drug concentration according to claim 1, characterized in that: The circulation space (32) is fixedly connected with sealing block A (38), sealing block B (39) and sealing block C (40). The circulation space (32) is provided with three sealing plates (41) for sealing the A connection port (34), the B connection port (35) and the C connection port (36). The inner side of each of the three sealing plates (41) is fixedly connected with a sealing gasket (42). The outer side of the sealing plate (41) inside the C connection port (36) is fixedly connected with a blocking block (43).

4. The sample collection device for convenient monitoring of human blood drug concentration according to claim 3, characterized in that: The sealing plate 4 (1) inside the C-connection port (36) is closed, causing the sealing block (43) to contact the A-sealing block (38) and the C-sealing block (40). The sealing plate (41) inside the C-connection port (36) is opened, causing the sealing block (43) to contact the B-sealing block (39) and the C-sealing block (40).

5. A sample collection device for convenient monitoring of human blood drug concentration according to claim 3, characterized in that: An infusion channel (44) is formed between the A connecting port (34), the A sealing block (38), the B sealing block (39), the blocking block (43), the C sealing block (40), and the B connecting port (35). A blood collection channel (45) is formed between the A sealing block (38), the B sealing block (39), the blocking block (43), the C sealing block (40), and the C connecting port (36).

6. The sample collection device for convenient monitoring of human blood drug concentration according to claim 1, characterized in that: All three sealing plates (41) are rotatably connected inside the flow space (32) via rotating rods (46), and the ends of the three rotating rods (46) extend rotatably into the receiving space (33). All three rotating rods (46) are fixedly connected to a return torsion spring (47) on their exterior.

7. A sample collection device for convenient monitoring of human blood drug concentration according to claim 6, characterized in that: A connecting plate (48) is fixedly connected to the ends of the two rotating rods (46) near the A connecting port (34) and the B connecting port (35). A gear ring (49) is provided on the outside of the connecting plate (48). The gear ring (49) is rotatably connected to the inside of the accommodating space (33) through the rotating cylinder (50). A one-way driving member (51) is provided between the symmetrical connecting plate (48) and the gear ring (49). The connecting plate (48) near the B connecting port (35) can drive the gear ring (49) on its outside clockwise through the one-way driving member (51). The gear ring (49) near the A connecting port (34) can drive the connecting plate (48) on its inside clockwise through the one-way driving member (51).

8. A sample collection device for convenient monitoring of human blood drug concentration according to claim 7, characterized in that: The one-way drive member (51) includes a sliding groove (510) and a drive groove (511) symmetrically opened on the outside of the connecting disc (48) and the inside of the gear ring (49). The sliding groove (510) is slidably connected to a one-way drive block (512) located inside the drive groove (511). A return spring (513) is fixedly connected between the one-way drive block (512) and the sliding groove (510).

9. A sample collection device for easy monitoring of human blood drug concentration according to claim 7, characterized in that: The interior of the accommodating space (33) is symmetrically connected to a rotating shaft (52). The end of the rotating shaft (51) is fixedly connected to an incomplete gear (53). The incomplete gear (53) can rotate counterclockwise and mesh with its external gear ring (49). A synchronous drive (54) is provided between the symmetrical rotating shafts (51).

10. A sample collection device for convenient monitoring of human blood drug concentration according to claim 3, characterized in that: A connecting iron plate (55) is embedded on the outside of the sealing plate (41) near the A connection port (34). An electromagnetic plate (56) that can attract the connecting iron plate (55) when energized is fixedly embedded on the outside of the A sealing block (38). A touch switch (57) connected to the electromagnetic plate (56) is embedded on the outside of the C sealing block (40). A battery module (58) connected to the touch switch (57) is disposed inside the accommodating space (33).

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