Spring fixing structure of hemostix

Abstract

The utility model discloses a hemostix spring fixing structure, and relates to the technical field of blood sampling instruments. A fixed cylinder is arranged at the top end of the bottom cylinder, threaded protrusions are arranged on the outer surface of the fixed cylinder, an outer cylinder is arranged on the outer side of the fixed cylinder in a sliding mode, an inner cylinder is connected to the top end in the outer cylinder and arranged on the inner side of the fixed cylinder in a sliding mode, a spring is arranged between the outer cylinder and the inner cylinder, and one end of the spring is connected with the fixed cylinder. A supporting block is slidably arranged in the inner cylinder, and a blood taking needle is arranged at the top end of the supporting block. The spring can be stably compressed and rebounded through the inner barrel and the outer barrel, it is guaranteed that the blood taking needle can be stably pierced out, it is avoided that the blood taking needle inclines to affect use, meanwhile, the spring can be limited through the limiting component after use, and the safety of the blood taking needle is improved. Therefore, cross infection caused by the fact that the blood taking needle leaks outwards to prick a person can be avoided, and the blood taking needle can be conveniently recycled.

Description

Technical Field

[0001] The utility model relates to the technical field of blood sampling instruments, in particular to a spring fixing structure of a blood sampling instrument. Background Art

[0002] In the medical blood collection field, disposable blood collection devices are popular among medical staff and patients for their small size, safety, and ease of use. They are currently widely used in various medical institutions and among diabetic patients. These devices feature a built-in ejection mechanism, a compact structure, and are disposable, making them safe and convenient, thus offering great market development prospects.

[0003] Chinese utility model patent application number 202221443793.0 discloses a new spring fixing device for a safety blood collection needle. The above technical solution can promptly detect the deflection of the spring to avoid danger during the puncture process, and is convenient for disassembly and maintenance.

[0004] However, in actual use, the above technical solution is difficult to restrict the spring after blood collection is completed. Therefore, after the blood is collected and rebounds, when it is pressed again, the blood collection needle is still easy to leak out through the through hole, which is very easy to cause secondary harm to people, thereby causing cross infection and is not conducive to recycling and processing.

[0005] Therefore, a blood sampling device spring fixing structure is proposed. Utility Model Content

[0006] In order to solve the problems existing in the prior art, the utility model provides a spring fixing structure for a blood sampling device.

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0008] The top end of the fixing cylinder is fixed with a fixing cylinder, and the outer surface of the fixing cylinder is provided with a threaded protrusion, and the outer cylinder is slidably provided with an outer cylinder, and the inner top end of the outer cylinder is connected to the inner cylinder, and the inner cylinder is slidably arranged in the inner side of the fixing cylinder, and a spring is provided between the outer cylinder and the inner cylinder, and one end of the spring is connected to the fixing cylinder and the inner cylinder. A support block is slidably provided inside the inner cylinder, and a blood collection needle is provided at the top end of the support block. The outer cylinder and the inner cylinder are provided with a through hole adapted for the blood collection needle. A limiting member for limiting the position of the outer cylinder is provided on the fixing cylinder, and the limiting member includes a fixing ring arranged on the outer side of the fixing cylinder and a limiting ring slidably arranged on the outer side of the fixing cylinder, a first magnetic ring is provided at the top of the fixing ring, and a second magnetic ring is provided at the bottom end of the limiting ring that is magnetically connected to the first magnetic ring, and a threaded groove adapted for the threaded protrusion is provided on the inner side of the limiting ring.

[0009] Furthermore, a clearance groove is provided on the bottom tube, a telescopic sleeve is provided at the inner bottom end of the bottom tube, a telescopic rod is slidably provided in the telescopic sleeve, and a scale line groove is provided on the outer surface of the telescopic rod.

[0010] Furthermore, a threaded rod is threadedly connected to the bottom cylinder and the fixed cylinder, a connecting disc is provided at the bottom end of the threaded rod, the connecting disc is rotatably connected to the telescopic rod, and the threaded rod is rotatably connected to the support block.

[0011] Furthermore, a second sliding groove is provided on the support block, and a second sliding block adapted to the second sliding groove is provided inside the inner cylinder.

[0012] Furthermore, a first sliding block is provided on the inner side of the outer cylinder, and a first sliding groove adapted to the first sliding block is provided on the outer side of the fixed cylinder.

[0013] Furthermore, a friction sleeve is sleeved on the outer side of the limiting ring.

[0014] The beneficial effects of the utility model are as follows:

[0015] The utility model can ensure that the spring can be stably compressed and rebounded by providing the inner cylinder and the outer cylinder, so that the blood collection needle can be smoothly inserted and prevented from being skewed and affecting its use. At the same time, after use, the spring can be limited by the provided limiting component, thereby preventing the blood collection needle from leaking out and pricking people and causing cross infection, and facilitating its recovery and treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 It is a front view of the utility model;

[0018] Figure 3 It is a cross-sectional view of the utility model;

[0019] Figure 4 It is an enlarged view of part A of the present utility model.

[0020] Figure numerals: 1. bottom cylinder; 101. give way groove; 2. fixed cylinder; 201. threaded protrusion; 202. first slide groove; 3. limiting member; 301. fixed ring; 302. first magnetic ring; 303. second magnetic ring; 304. limiting ring; 305. threaded groove; 306. friction sleeve; 4. telescopic sleeve; 401. telescopic rod; 402. scale line groove; 5. threaded rod; 501. connecting disk; 502. support block; 5021. second slide groove; 503. blood collection needle; 6. outer cylinder; 601. first slider; 7. inner cylinder; 701. second slider; 8. through hole; 9. spring. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0024] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0025] like Figure 1-4As shown, a spring fixing structure of a blood collection device includes a bottom cylinder 1, a fixing cylinder 2 is provided at the top of the bottom cylinder 1, a threaded protrusion 201 is provided on the outer surface of the fixing cylinder 2, an outer cylinder 6 is slidably provided on the outer side of the fixing cylinder 2, an inner cylinder 7 is connected to the inner top of the outer cylinder 6, and the inner cylinder 7 is slidably provided on the inner side of the fixing cylinder 2, a spring 9 is provided between the outer cylinder 6 and the inner cylinder 7, one end of the spring 9 is connected to the fixing cylinder 2, a support block 502 is slidably provided inside the inner cylinder 7, and the support block 502 The top of the fixed cylinder 2 is provided with a blood collection needle 503, and a through hole 8 is provided on the outer cylinder 6 and the inner cylinder 7 to match the blood collection needle 503. The fixed cylinder 2 is provided with a limiting member 3 for limiting the position of the outer cylinder 6. The limiting member 3 includes a fixed ring 301 provided on the outside of the fixed cylinder 2 and a limiting ring 304 slidably provided on the outside of the fixed cylinder 2. The top of the fixed ring 301 is provided with a first magnetic ring 302, and the bottom of the limiting ring 304 is provided with a magnetic connection with the first magnetic ring 302. The second magnetic ring 303 is connected, and the inner side of the limiting ring 304 is provided with a threaded groove 305 that is compatible with the threaded protrusion 201; specifically, the spring 9 is arranged between the inner tube 7 and the outer tube 6, and the inner tube 7 and the outer tube 6 can slide on the fixed tube 2, thereby ensuring that the spring 9 will not be skewed. After the blood collection is completed, it is ensured that it can pop out normally. At the same time, during use, the outer tube 6 can protect the spring 9 and prevent the spring 9 from being blocked by the hand and difficult to rebound. After it pops out, pull the limiting ring 304 to disengage it from the fixed ring 301, and then rotate the limiting ring 304 so that it can be rotated to the bottom of the outer tube 6, thereby fixing the position of the outer tube 6. After the blood collection is completed, the outer tube 6 can be prevented from continuing to press downward, thereby preventing the blood collection needle 503 from leaking out, thereby avoiding injuring others and causing cross infection, and it can also be convenient for it to be recycled.

[0026] like Figure 2 As shown, a clearance groove 101 is provided on the bottom tube 1, a telescopic sleeve 4 is provided at the inner bottom end of the bottom tube 1, a telescopic rod 401 is slidably provided inside the telescopic sleeve 4, and a scale line groove 402 is provided on the outer surface of the telescopic rod 401; specifically, the clearance groove 101 facilitates observation of the scale on the telescopic rod 401, and also facilitates rotation of the threaded rod 5.

[0027] As shown in Figure 3, a threaded rod 5 is threadedly connected to the bottom cylinder 1 and the fixed cylinder 2. A connecting disc 501 is provided at the bottom end of the threaded rod 5. The connecting disc 501 is rotatably connected to the telescopic rod 401, and the threaded rod 5 is rotatably connected to the support block 502. Specifically, rotating the threaded rod 5 can drive the support block 502 to rise and fall, thereby adjusting the height of the lancet 503, so that it can adapt to the use of people with different skin thicknesses.

[0028] like Figure 3As shown, a second slide groove 5021 is provided on the support block 502, and a second slider 701 adapted to the second slide groove 5021 is provided inside the inner tube 7; specifically, the second slider 701 slides inside the second slide groove 5021, which can ensure the stability of the support block 502, and further ensure that the blood collection needle 503 is in an upright state to prevent it from tilting.

[0029] like Figure 3 As shown, a first slider 601 is provided on the inner side of the outer cylinder 6, and a first slide groove 202 adapted to the first slider 601 is opened on the outer side of the fixed cylinder 2; specifically, the first slider 601 slides inside the first slide groove 202 to ensure the stable movement of the outer cylinder 6.

[0030] like Figure 4 As shown, a friction sleeve 306 is sleeved on the outer side of the limiting ring 304; specifically, the friction sleeve 306 can easily drive the limiting ring 304 to rotate.

[0031] In summary: the spring 9 is arranged between the inner tube 7 and the outer tube 6, and the inner tube 7 and the outer tube 6 can slide on the fixed tube 2, thereby ensuring that the spring 9 will not be skewed. After the blood collection is completed, it is ensured that it can pop out normally. At the same time, the outer tube 6 can protect the spring 9 during use, and can also prevent the spring 9 from being blocked by the hand and difficult to rebound. After it pops out, pull the limiting ring 304 to disengage it from the fixed ring 301, and then rotate the limiting ring 304 so that it can be rotated to the bottom of the outer tube 6, thereby fixing the position of the outer tube 6. Therefore, after the blood collection is completed, the outer tube 6 can be prevented from continuing to press downward, thereby preventing the blood collection needle 503 from leaking out, thereby avoiding injuring others and causing cross infection, and it can also be convenient for it to be recycled.

[0032] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A blood sampling device spring fixing structure, characterized in that: The invention comprises a bottom cylinder (1), a fixed cylinder (2) is provided at the top of the bottom cylinder (1), a threaded protrusion (201) is provided on the outer surface of the fixed cylinder (2), an outer cylinder (6) is slidably provided on the outer side of the fixed cylinder (2), an inner cylinder (7) is connected to the inner top of the outer cylinder (6), and the inner cylinder (7) is slidably provided on the inner side of the fixed cylinder (2), a spring (9) is provided between the outer cylinder (6) and the inner cylinder (7), one end of the spring (9) is connected to the fixed cylinder (2), a support block (502) is slidably provided inside the inner cylinder (7), a blood collection needle (503) is provided at the top of the support block (502), and the outer cylinder (6) and the inner cylinder (7) are opened. A through hole (8) is provided which is compatible with the blood collection needle (503); a limiting member (3) is provided on the fixed cylinder (2) for limiting the position of the outer cylinder (6); the limiting member (3) comprises a fixed ring (301) arranged on the outside of the fixed cylinder (2) and a limiting ring (304) slidably arranged on the outside of the fixed cylinder (2); a first magnetic ring (302) is provided at the top of the fixed ring (301); a second magnetic ring (303) magnetically connected to the first magnetic ring (302) is provided at the bottom of the limiting ring (304); a thread groove (305) which is compatible with the threaded protrusion (201) is provided on the inner side of the limiting ring (304).

2. A blood sampling device spring fixing structure according to claim 1, characterized in that: The bottom tube (1) is provided with a clearance groove (101), the inner bottom end of the bottom tube (1) is provided with a telescopic sleeve (4), a telescopic rod (401) is slidably provided in the telescopic sleeve (4), and a scale line groove (402) is provided on the outer surface of the telescopic rod (401).

3. A blood sampling device spring fixing structure according to claim 2, characterized in that: A threaded rod (5) is threadedly connected to the bottom cylinder (1) and the fixed cylinder (2); a connecting disc (501) is provided at the bottom end of the threaded rod (5); the connecting disc (501) is rotatably connected to the telescopic rod (401); and the threaded rod (5) is rotatably connected to the support block (502).

4. The blood sampling device spring fixing structure according to claim 1, characterized in that: A second sliding groove (5021) is provided on the support block (502), and a second sliding block (701) adapted to the second sliding groove (5021) is provided inside the inner cylinder (7).

5. The blood sampling device spring fixing structure according to claim 1, characterized in that: A first sliding block (601) is provided on the inner side of the outer cylinder (6), and a first sliding groove (202) adapted to the first sliding block (601) is provided on the outer side of the fixed cylinder (2).

6. The blood sampling device spring fixing structure according to claim 1, characterized in that: A friction sleeve (306) is sleeved on the outer side of the limiting ring (304).

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