Peripheral blood collector with blood collection needle

Abstract

The invention discloses a peripheral blood collector with a blood taking needle, relates to the technical field of blood collectors, solves the problem of poor use effect of an existing blood taking needle, and adopts the technical scheme that the peripheral blood collector comprises a shell, a rubber head connected to the top of the shell, a pressing mechanism arranged in the shell, a needle handle, a needle head, a needle cap and a blood collecting tube, the interior of the rubber head is in a negative pressure state; the pressing mechanisms are arranged in the middle of the shell, the tops of the pressing mechanisms are connected with the rubber head, the needle handle is arranged between the pressing mechanisms, a pipeline of the needle handle is connected and communicated with the needle head, and the needle handle and the needle head move towards an opening in the bottom of the shell under pressing of the pressing mechanisms. The blood taking needle and the suction tube are fused together, so that the blood taking needle has the functions of the blood taking needle and the suction tube, after skin is punctured in a pressing mode, blood can be directly sucked and put into an anticoagulation tube, the operation steps and the probability of cross infection are reduced, the infection risk is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of blood sampling devices, in particular to a peripheral blood sampling device with a blood sampling needle. Background Art

[0002] At present, the commonly used method for peripheral blood collection is to first use a blood collection needle to puncture the finger, and then the medical staff will use a straw to draw blood, and then transfer it to a test tube with an anticoagulant. The blood collection needle and the straw are separated, and the operation is cumbersome, which affects work efficiency. During the blood collection process, since the blood is collected directly with a straw, the risk of blood contamination is high. Secondly, the blood collected with a straw may indirectly contact other objects during the transfer and storage process, which increases the risk of blood contamination and is not conducive to blood collection and subsequent detection accuracy. Summary of the invention

[0003] In view of the existing technical problems, the purpose of the present invention is to provide a peripheral blood collector with a blood collection needle to solve the above problems. The blood collection needle and the straw are integrated together so that it has the functions of the blood collection needle and the straw. After puncturing the skin, it can be used to directly draw blood and put it into an anticoagulant tube. There is no direct contact with medical staff during the blood collection process, and the contact with multiple containers during the transfer process after blood collection is avoided, thereby reducing the risk of blood contamination. The operation is simple and can achieve the purpose of rapid blood collection.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A peripheral blood collector with a blood collection needle comprises a shell, a rubber head connected to the top of the shell, a pressing mechanism arranged inside the shell, a needle handle, a needle, a needle cap and a blood collection tube, wherein the rubber head is arranged at the top of the shell, and the inside of the rubber head is in a negative pressure state; the pressing mechanism is arranged in the middle of the shell, and its top is connected to the rubber head, the needle handle is arranged between the pressing mechanisms, and a pipeline of the needle handle is connected to the needle head and is in communication, and the needle handle and the needle head move toward the bottom opening of the shell under the downward pressure of the pressing mechanism;

[0006] The pipeline at the top of the needle handle passes through the pressing mechanism and is connected to the inside of the rubber head through a thin tube; the tip of the needle protrudes from the bottom opening of the shell, and the needle cap is connected to the protruding needle; after blood collection, the needle handle is connected to the blood collecting tube to transfer the blood sample in the needle handle to the blood collecting tube.

[0007] Preferably, the blood collector includes an anticoagulant tube and a puncture device arranged on the top of the anticoagulant tube, the puncture device includes a deformable silicone sleeve and a pipette needle placed inside the silicone sleeve, the silicone sleeve is fixed on the top of the anticoagulant tube, and the pipette needle is adapted to the needle handle.

[0008] Preferably, the pressing mechanism includes a pressing switch, a first engaging member, a second engaging member and a compression spring, the end of the pressing switch is connected to the top of the first engaging member, the ends of the first engaging member and the second engaging member close to each other are provided with an engaging tooth structure, one end of the compression spring is fixed to the bottom of the second engaging member, and the other end thereof is fixed to the outer shell.

[0009] Preferably, the housing is provided with a mounting seat at the position where it is connected to the compression spring, a through hole is provided in the middle of the mounting seat, a protruding structure is provided on the top, and the protruding structure of the mounting seat is inserted into the inner circumference of the compression spring.

[0010] Preferably, the middle parts of the first engaging member and the second engaging member are hollow so as to allow the channel of the needle handle to pass through.

[0011] Preferably, the shell is provided with a needle channel below the mounting seat, and the needle handle passes through the needle channel and moves in the needle channel under the action of the pressing mechanism.

[0012] Preferably, the rubber head is made of a pressable silicone material.

[0013] Preferably, the housing and the rubber head are sealed.

[0014] In summary, the present invention has the following beneficial effects:

[0015] A pressable blood collection needle is used to puncture the skin and collect peripheral blood. The rubber head and the shell are sealed and connected, which has good safety. When in use, the skin is punctured with the protruding needle, and the push switch is pressed through the rubber head, so that the first engaging part and the second engaging part are matched with the compression spring to make the needle and the needle handle pass through the bottom opening of the shell. After the needle is removed, the blood is sucked with the front end of the needle handle. Since the inside of the rubber head is in a negative pressure contraction state, the peripheral blood can be quickly sucked into the pipe of the needle handle. After blood collection, the needle handle is connected to the blood collector, and the negative pressure inside the anticoagulant tube is used to suck the blood sample in the pipe of the needle handle into the anticoagulant tube, thereby achieving the purpose of blood collection and blood collection.

[0016] After the needle handle is connected to the pipette needle, the silicone sleeve is squeezed toward the anticoagulant tube, so that the pipette needle pierces the opening on the anticoagulant tube, connecting the needle handle and the anticoagulant tube.

[0017] On the whole, there is no direct contact with medical staff during the blood collection process, and the blood is avoided from contacting multiple containers during the transfer process after collection, which reduces the risk of blood contamination. The operation is simple, can achieve the purpose of rapid blood collection, and is conducive to subsequent testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic structural diagram of the peripheral blood collector of the present invention;

[0019] Figure 2 yes Figure 1 A magnified schematic diagram of the middle A area;

[0020] Figure 3 It is a schematic structural diagram of the blood collector of the present invention.

[0021] Figure numerals: 1. Shell; 2. Rubber head; 3. Pressing mechanism; 31. Press switch; 32. First engaging part; 33. Second engaging part; 34. Compression spring; 35. Engaging tooth structure; 4. Needle handle; 41. Blood collection tube; 42. Anticoagulant tube; 5. Needle; 6. Needle cap; 61. Silicone pad; 7. Blood collector; 71. Anticoagulant tube; 72. Silicone sleeve; 73. Pipette needle; 8. Mounting seat; 9. Needle channel. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0023] See also Figure 1-Figure 3 A typical embodiment of the present application provides a peripheral blood collector with a blood collection needle, including a shell 1, a rubber head 2, a pressing mechanism 3, a needle handle 4, a needle 5, a needle cap 6 and a blood collection tube 7. The shell 1 is a cylindrical structure with a small opening at the bottom and a large opening at the top. The interior of the shell 1 is a hollow structure. The shell 1 is composed of an upper cylinder and a lower cylinder. The upper cylinder and the lower cylinder are detachably connected by threads so that the structure inside the shell 1 can be disassembled. The bottom of the lower cylinder of the shell 1 is provided with an opening for the needle 5 and the needle handle 4 to pass through. The rubber head 2 is fixed and sealed to the top of the upper cylinder of the shell 1. The length of the shell 1 is 5 cm, and the length of the rubber head 2 is 2 cm. The rubber head 2 is made of a pressable silicone material. The rubber head 2 is a closed balloon structure. The diameter of the bottom opening of the rubber head 2 is smaller than the diameter of the top. The inside of the rubber head 2 is in a negative pressure state before use.

[0024] The pressing mechanism 3 is arranged on the upper tube part of the shell 1, and its top is in contact with the rubber head 2. The needle handle 4 is arranged between the pressing mechanisms 3. The pipeline on the top of the needle handle 4 passes through the pressing mechanism 3 and is connected to the rubber head 2 through a thin tube.

[0025] The pressing mechanism 3 is arranged in the middle of the shell 1, and the pressing mechanism 3 includes a pressing switch 31, a first meshing member 32, a second meshing member 33 and a compression spring 34. The pressing switch 31 is a pressing rod, and a circular pressing plate is provided on the top of the pressing rod. The bottom of the pressing switch 31 is fixedly connected to the top of the first meshing member 32. The first meshing member 32 and the second meshing member 33 are close to each other. The meshing tooth structure 35 of the first meshing member 32 and the second meshing member 33 match. Specifically, the meshing tooth structure 35 is two rows of twill teeth with a height difference.

[0026] The top end of the compression spring 34 is fixed to the bottom of the second engagement member 33, and the bottom end of the compression spring 34 is fixed to the housing 1. When the push switch 31 is pressed down, the first engagement member 32 is pressed down, so that the engagement teeth of the first engagement member 32 and the second engagement member 33 are staggered, thereby increasing the spacing between the first engagement member 32 and the second engagement member 33. Under the action of the compression spring 34, the first engagement member 32 and the second engagement member 33 are kept stably connected. In this process, the needle handle 4 drives the needle head 5 to move toward the bottom opening direction of the housing 1, so that the needle head 5 and the needle handle 4 pass through the housing 1.

[0027] The bottom end of the needle handle 4 is connected to the needle 5 and is in communication. The top of the needle handle 4 abuts against the pressing mechanism 3, and the tip of the needle 5 protruding from the bottom opening of the shell 1 is connected to the needle cap 6. A silicone pad 61 is provided inside the needle cap 6, and the needle 5 is tightly connected to the needle cap 6 through the silicone pad 61. Before use, the needle cap 6 is pulled off, which is conducive to the protruding tip of the needle 5 piercing the finger. Under the downward pressure of the pressing mechanism 3, the needle handle 4 and the needle 5 move toward the bottom opening of the shell 1, so that the needle handle 4 extends out of the shell 1 for blood collection. After blood collection, the needle handle is inserted into the blood collection tube to transfer the blood sample in the needle handle to the blood collection tube.

[0028] Specifically, the blood collector 7 includes an anticoagulant tube 71 and a puncture device 72 at the top of the anticoagulant tube. The puncture device 72 includes a deformable silicone sleeve 73 and a pipette needle 74. The silicone sleeve 73 is fixed at the top of the anticoagulant tube 71. The pipette needle 74 is fixed in the silicone sleeve 73. The connecting end of the pipette needle 74 is adapted to the needle handle 6, and the needle end is set downward. The middle part of the silicone sleeve 73 is hollow, and the surrounding side is a deformation area 75. After the blood collection is completed, the needle handle 5 is inserted into the connecting end of the pipette needle 74, and then the needle handle 5 and the pipette needle 74 are pressed downward toward the anticoagulant tube 71, so that the needle end of the pipette needle 74 is inserted into the anticoagulant tube 71. In the process, the extrusion deformation of the deformation area 75 on the surrounding side of the silicone sleeve 73 is used to make the pipette needle 74 movable.

[0029] When the pipette needle 74 is inserted into the anticoagulation tube 71 , the blood sample collected in the needle handle 5 can be quickly sucked into the anticoagulation tube 71 due to the negative pressure inside the anticoagulation tube 71 , thereby achieving the purpose of collecting blood samples.

[0030] In a preferred embodiment, in order to improve the stability of the compression spring 34 during the pressing process, the lower cylinder of the housing 1 is provided with a mounting seat 6 at the connection position with the compression spring 34, and a through hole is provided in the middle of the mounting seat 6, and the through hole is used to pass the needle handle 4. The middle part of the mounting seat 6 is upwardly protruded with a protruding structure, and the protruding structure of the mounting seat 6 is inserted into the inner circumference of the compression spring 34, so that the moving trajectory of the compression spring 34 remains straight.

[0031] The first engaging member 32 and the second engaging member 33 are hollow in the middle to allow the blood collection tube 41 of the needle handle 4 to pass through.

[0032] In order to ensure that the needle handle 4 does not deviate significantly during movement, a needle channel 7 is provided at the lower cylinder portion of the housing 1 below the mounting seat 6. The needle channel 7 is a straight cylinder. The needle handle 4 passes through the needle channel 7 and moves within the needle channel 7 under the action of the pressing mechanism 3. The movement trajectories of the needle handle 4 and the needle head 5 remain straight, thereby improving stability and safety.

[0033] In a preferred embodiment, in order to ensure safety, the distal collector is a disposable collector, and the collector is produced through aseptic processing. Aseptic processing of medical supplies is a routine operation in this field.

[0034] During operation, after using the protruding needle 5 to pierce the skin, the push switch 31 is pressed through the rubber head 2, so that the first engagement member 32 and the second engagement member 33 are matched with the compression spring 34 to make the needle handle 4 pass through the bottom opening of the shell 1. After removing the needle 5, the front end of the needle handle 4 is used to absorb blood. Since the inside of the rubber head 2 is in a negative pressure contraction state, the peripheral blood can be quickly absorbed into the needle handle 4 pipeline. After blood collection, the needle handle 4 is connected to the blood collector 7, and the negative pressure inside the anticoagulation tube 71 is used to absorb the blood sample in the needle handle 4 pipeline into the anticoagulation tube 71, so as to achieve the purpose of blood collection and blood collection.

[0035] In general, there is no direct contact with medical staff during the blood collection process, avoiding contact with multiple containers during the transfer process after blood collection, and reducing the risk of blood contamination. The operation is simple, and the purpose of rapid blood collection can be achieved, which is conducive to the subsequent detection and the purpose of rapid blood collection.

[0036] The present invention integrates a blood collection needle and a straw together so that it has the functions of a blood collection needle and a straw. After puncturing the skin, it can be used to directly draw blood and put it into an anticoagulant tube, reducing the operation steps and the contact with multiple containers during the blood collection process, thereby reducing the chance of cross infection, reducing the risk of blood infection, and improving work efficiency. It has the advantages of easy use, safety, and rapid blood collection.

[0037] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A peripheral blood collector with a blood collection needle, comprising a shell, a rubber head connected to the top of the shell, a pressing mechanism arranged inside the shell, a needle handle, a needle, a needle cap and a blood collection tube, wherein the rubber head is arranged at the top of the shell, and the inside of the rubber head is in a negative pressure state; the pressing mechanism is arranged in the middle of the shell, and its top is connected to the rubber head, the needle handle is arranged between the pressing mechanisms, and a pipeline of the needle handle is connected to the needle head and is in communication, and the needle handle and the needle head move toward the bottom opening of the shell under the downward pressure of the pressing mechanism; The pipeline at the top of the needle handle passes through the pressing mechanism and is connected to the inside of the rubber head through a thin tube; the tip of the needle protrudes from the bottom opening of the shell, and the needle cap is connected to the protruding needle; after blood collection, the needle handle is connected to the blood collecting tube to transfer the blood sample in the needle handle to the blood collecting tube.

2. A peripheral blood collector with a blood collection needle according to claim 1, characterized in that: The blood collector includes an anticoagulant tube and a puncture device arranged on the top of the anticoagulant tube. The puncture device includes a deformable silicone sleeve and a pipette needle placed inside the silicone sleeve. The silicone sleeve is fixed on the top of the anticoagulant tube, and the pipette needle is adapted to the needle handle.

3. A peripheral blood collector with a blood collection needle according to claim 1, characterized in that: The pressing mechanism includes a pressing switch, a first engaging member, a second engaging member and a compression spring. The end of the pressing switch is connected to the top of the first engaging member. The ends of the first engaging member and the second engaging member that are close to each other are provided with an engaging tooth structure. One end of the compression spring is fixed to the bottom of the second engaging member, and the other end thereof is fixed to the outer shell.

4. A peripheral blood collector with a blood collection needle according to claim 3, characterized in that: The housing is provided with a mounting seat at the position where it is connected to the compression spring. A through hole is provided in the middle of the mounting seat and a protruding structure is provided on the top. The protruding structure of the mounting seat is inserted into the inner circumference of the compression spring.

5. A peripheral blood collector with a blood collection needle according to claim 3, characterized in that: The middle parts of the first engaging member and the second engaging member are hollow so as to allow the channel of the needle handle to pass through.

6. A peripheral blood collector with a blood collection needle according to claim 3, characterized in that: The shell is provided with a needle channel below the mounting seat, and the needle handle passes through the needle channel and moves in the needle channel under the action of the pressing mechanism.

7. A peripheral blood collector with a blood collection needle according to claim 1, characterized in that: Preferably, the rubber head is made of a pressable silicone material.

8. The peripheral blood collector with a blood collection needle according to claim 1, characterized in that: Preferably, the housing and the rubber head are sealed.

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