Safety blood taking needle structure

Abstract

The utility model discloses a safety type blood taking needle structure, and relates to the technical field of medical instruments. The device comprises a storage seat, a movable column is arranged in the storage seat, and a needle head is installed at the top of the movable column; an adjusting assembly is arranged at the bottom of the storage base and comprises a handle, and a rotary knob is arranged at the bottom of the handle. Through the arrangement of the limiting assembly, before a medical worker takes blood, the adhesive tape can be manually torn to be separated from the annular groove, limiting on the sliding rod is canceled, then the handle is directly moved, the puncture hole is aligned with the blood taking position of a patient, pressing blood taking is conducted, and the blood taking convenience can be improved; when blood sampling needs to be carried out on adults, the knob and the screw rod are manually rotated, the moving column and the needle head are jacked upwards by driving the moving pipe, the puncture length of the needle head is increased, and it is guaranteed that medical workers can successfully sample blood at a time.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to a safety blood collection needle structure. Background Technology

[0002] A lancet is a medical device used for blood collection, widely used in clinical laboratories, hospitals, and other medical settings. It is designed to safely and quickly collect blood samples from a patient's veins or skin for various medical tests and diagnoses. A lancet typically consists of a needle, a syringe, and a connector. The needle is generally made of stainless steel and undergoes special treatment to improve its sharpness and corrosion resistance.

[0003] Currently, the length of blood collection needles is fixed during use, making it impossible to accurately distinguish the puncture depth for adults and children. Medical staff need to control the puncture depth by feel. When drawing blood from children, it is easy to insert the needle too deeply, resulting in slow wound healing. When drawing blood from adults, it may result in insufficient puncture depth, requiring multiple punctures, which is very inconvenient.

[0004] To address these issues, we provide a safety-designed blood collection needle structure. Utility Model Content

[0005] The purpose of this invention is to provide a safe blood collection needle structure. By cooperating with the adjustment component and the limiting component, it solves the problem that the existing blood collection needles lack the function of adjusting the needle insertion depth, requiring medical staff to control the insertion depth by feel.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a safety blood collection needle structure, including a storage base, a movable column is provided inside the storage base, and a needle is installed on the top of the movable column;

[0008] The storage base is provided with an adjustment component at the bottom. The adjustment component includes a handle, a knob at the bottom of the handle, a screw fixedly connected to the top of the knob, and the top of the screw passes through the inside of the handle and is threadedly connected to a moving tube.

[0009] The top of the handle is provided with a limiting component, which includes a sealing shell that extends through the top of the storage base. A sliding groove is provided inside the sealing shell, and sliding rods are fixedly connected to both sides of the sealing shell.

[0010] The present invention is further configured such that the limiting component also includes an annular groove, the annular groove is formed on the surface of the storage base, and adhesive tape is adhered inside the annular groove.

[0011] The present invention is further configured such that a support ring is fixedly connected to the surface of the movable column, and the support ring is slidably connected to the inner wall of the storage seat.

[0012] The present invention is further configured such that a spring is sleeved on the surface of the movable column, and the top and bottom ends of the spring are fixedly connected to the sealing shell and the support ring, respectively.

[0013] The present invention is further configured such that the slide rod is slidably connected to the inner wall of the slide groove, and one side of the slide groove is connected to the annular groove.

[0014] The present invention is further configured such that a puncture hole is provided on the top of the sealing shell, and a sealing membrane is installed inside the puncture hole.

[0015] The present invention is further configured such that a fixing tube is connected to the bottom of the storage base, an installation tube is threadedly connected to the surface of the fixing tube, and the bottom of the installation tube is fixedly connected to the handle.

[0016] The present invention is further configured such that the surface of the screw is slidably connected to the inner wall of the handle via a bearing, and a slider is fixedly connected to one side of the moving tube, the slider being slidably connected to the inner wall of the handle.

[0017] This utility model has the following beneficial effects:

[0018] This invention, through the setting of a limiting component, allows medical staff to manually tear open the tape before blood collection, causing the tape to detach from the annular groove, thus removing the limiting effect on the sliding rod. Then, the handle can be moved directly to align the puncture hole with the patient's blood collection position for pressing and blood collection, improving the convenience of blood collection. By adjusting the component settings, when blood collection is required for adults, the knob and screw can be manually rotated to drive the moving tube to lift the moving column and needle upward, increasing the needle puncture length and ensuring that medical staff can successfully collect blood on the first attempt.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0021] Figure 1 A three-dimensional structural diagram of a safety blood collection needle.

[0022] Figure 2 A cross-sectional view of the sealing shell and storage base in a safety blood collection needle structure;

[0023] Figure 3 This is a cross-sectional view of the handle and mounting tube in a safety blood collection needle structure.

[0024] Figure 4 This is a schematic diagram illustrating the adjustment of the needle tip in a safety blood collection needle structure.

[0025] Figure 5 This is a schematic diagram of needle puncture in a safety blood collection needle structure;

[0026] Figure 6 This is a schematic diagram showing the separation of the storage base and the handle in a safety blood collection needle structure.

[0027] In the attached diagram: 1. Storage base; 2. Moving column; 3. Needle; 4. Handle; 5. Knob; 6. Screw; 7. Moving tube; 8. Sealing shell; 9. Slide groove; 10. Slide rod; 11. Annular groove; 12. Adhesive tape; 13. Support ring; 14. Spring; 15. Puncture hole; 16. Fixing tube; 17. Installation tube; 18. Slider. Detailed Implementation

[0028] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] For a specific implementation example, please refer to Implementation Example 1. Figure 1-6 This utility model is a safety blood collection needle structure, including a storage base 1, a movable column 2 inside the storage base 1, and a needle 3 installed on the top of the movable column 2; an adjustment component is provided at the bottom of the storage base 1, the adjustment component includes a handle 4, a knob 5 is provided at the bottom of the handle 4, a screw 6 is fixedly connected to the top of the knob 5, the top of the screw 6 passes through the inside of the handle 4 and is threadedly connected to a movable tube 7; a limit component is provided at the top of the handle 4, the limit component includes a sealing shell 8, the sealing shell 8 passes through the top of the storage base 1, a sliding groove 9 is opened inside the sealing shell 8, and sliding rods 10 are fixedly connected to both sides of the sealing shell 8.

[0030] Specifically: the needle 3 is fixed to the moving column 2 and the support ring 13. When the bottom of the support ring 13 contacts the inner wall of the storage seat 1, the height between the top of the needle 3 and the top of the storage seat 1 is set to the puncture depth for children. The moving column 2 maintains a certain distance from the top of the inner wall of the storage seat 1, which is set to the adjustable height of the needle 3. The screw 6 has an external thread on its surface. When the screw 6 rotates, the moving tube 7 can be moved vertically by the action of the thread.

[0031] For a specific embodiment two, please refer to Figure 1-6Based on the first specific embodiment, the limiting component also includes an annular groove 11, which is formed on the surface of the storage base 1. Adhesive tape 12 is adhered inside the annular groove 11. A support ring 13 is fixedly connected to the surface of the moving column 2. The support ring 13 is slidably connected to the inner wall of the storage base 1. A spring 14 is sleeved on the surface of the moving column 2. The top and bottom ends of the spring 14 are fixedly connected to the sealing shell 8 and the support ring 13, respectively. The slide rod 10 is slidably connected to the inner wall of the slide groove 9. One side of the slide groove 9 is connected to the annular groove 11. A puncture hole 15 is formed on the top of the sealing shell 8. A sealing membrane is installed inside the puncture hole 15. A fixing tube 16 is connected to the bottom of the storage base 1. An installation tube 17 is threadedly connected to the surface of the fixing tube 16. The bottom of the installation tube 17 is fixedly connected to the handle 4. The surface of the screw 6 is slidably connected to the inner wall of the handle 4 through a bearing. A slider 18 is fixedly connected to one side of the moving tube 7. The slider 18 is slidably connected to the inner wall of the handle 4.

[0032] Specifically: the sealing shell 8 is slidably connected to the inner wall of the storage seat 1, the slide rod 10 is slidably connected to the inner wall of the slide groove 9, when the tape 12 is wrapped inside the annular groove 11, the tape 12 can prevent the slide rod 10 from moving downward, thus playing a limiting role, one side of the slide rod 10 passes through the annular groove 11, the spring 14 has the function of compression and energy storage, and can provide elastic support for the sealing shell 8 and the support ring 13, the sealing membrane is installed in the puncture hole 15, and can seal the top of the sealing shell 8, the handle 4 is threadedly connected to the storage seat 1 through the installation tube 17, and the handle 4 and the storage seat 1 can be separated after blood collection, so that the handle 4 can be reused.

[0033] The working principle of this utility model is as follows: When medical staff collect blood from children, they can manually tear off the tape 12. When the tape 12 separates from the annular groove 11, the limit on the slide bar 10 can be removed. Then, the handle 4 and the storage seat 1 are moved to align the puncture hole 15 with the blood collection position. Then, the handle 4 is pushed. When the sealing shell 8 comes into contact with the finger, the sealing shell 8 is pushed further. At this time, the needle 3 passes through the sealing film to puncture the finger and collect blood. After the blood collection is completed, the sealing shell 8 is reset under the action of the spring 14 to protect the needle 3 and play a protective role.

[0034] Then, manually rotate the separation handle 4 and the storage seat 1 to install the new storage seat 1 on top of the handle 4. When it is necessary to perform puncture on an adult, the knob 5 can be manually rotated. The knob 5, together with the screw 6, drives the moving tube 7 to move. The moving tube 7 pushes the moving column 2 and the needle 3, so that the needle 3 is completely pushed out of the storage seat 1, increasing the puncture depth of the needle 3 and ensuring that medical staff can successfully collect blood in one go.

[0035] All standard parts used in this invention can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through the control unit. The control circuit of the control unit can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. Therefore, the control method and circuit connection will not be explained in detail in this invention.

[0036] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A safety blood collection needle structure, comprising a storage base (1), characterized in that: The storage base (1) is provided with a movable column (2), and a needle (3) is installed on the top of the movable column (2). The storage base (1) is provided with an adjustment component at the bottom. The adjustment component includes a handle (4). A knob (5) is provided at the bottom of the handle (4). A screw (6) is fixedly connected to the top of the knob (5). The top of the screw (6) passes through the inside of the handle (4) and is threadedly connected to a moving tube (7). The handle (4) is provided with a limiting component at the top. The limiting component includes a sealing shell (8). The sealing shell (8) is disposed through the top of the storage base (1). A sliding groove (9) is provided inside the sealing shell (8). Sliding rods (10) are fixedly connected to both sides of the sealing shell (8).

2. The safety blood collection needle structure according to claim 1, characterized in that: The limiting component also includes an annular groove (11), which is formed on the surface of the storage base (1), and adhesive tape (12) is adhered inside the annular groove (11).

3. The safety blood collection needle structure according to claim 1, characterized in that: A support ring (13) is fixedly connected to the surface of the movable column (2), and the support ring (13) is slidably connected to the inner wall of the storage seat (1).

4. The safety blood collection needle structure according to claim 1, characterized in that: A spring (14) is fitted on the surface of the movable column (2), and the top and bottom ends of the spring (14) are fixedly connected to the sealing shell (8) and the support ring (13) respectively.

5. The safety blood collection needle structure according to claim 1, characterized in that: The slide rod (10) is slidably connected to the inner wall of the slide groove (9), and one side of the slide groove (9) is connected to the annular groove (11).

6. The safety blood collection needle structure according to claim 1, characterized in that: The top of the sealing shell (8) is provided with a puncture hole (15), and a sealing membrane is installed inside the puncture hole (15).

7. The safety blood collection needle structure according to claim 1, characterized in that: The storage base (1) has a fixed tube (16) at the bottom, and an installation tube (17) is threaded onto the surface of the fixed tube (16). The bottom of the installation tube (17) is fixedly connected to the handle (4).

8. The safety blood collection needle structure according to claim 1, characterized in that: The surface of the screw (6) is slidably connected to the inner wall of the handle (4) via a bearing, and a slider (18) is fixedly connected to one side of the moving tube (7), and the slider (18) is slidably connected to the inner wall of the handle (4).

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