A disposable blood collection pen

Abstract

The utility model discloses a disposable blood collection pen belonging to the technical field of blood collection pens, comprising a blood collection pen body, a fixing sleeve fixedly installed on the outer periphery of the bottom of the blood collection pen body, limiting grooves are provided on the inner wall surfaces on both sides of the interior of the fixing sleeve, a protective sleeve is slidably connected to the inner bottom end of the fixing sleeve, limiting blocks are fixedly arranged on both sides of the top of the protective sleeve, the limiting blocks extend to the inside of the limiting groove and are slidably connected to the inner wall thereof, an ejection spring is fixedly arranged inside the limiting groove, and the two ends of the ejection spring are respectively fixedly connected to the top wall of the limiting groove and the top of the limiting block, and the fixing sleeve and the slidable and retractable protective sleeve are arranged on the outer periphery of the bottom end of the blood collection pen body to protect the blood collection needle, so that in the process of using the blood collection pen body, the protective sleeve covers the outer periphery of the blood collection needle, plays a certain protective role, avoids the risk of accidental scratches, and improves the safety of the blood collection pen when in use.

Description

Technical Field

[0001] The utility model belongs to the technical field of blood collection pens, and in particular relates to a disposable blood collection pen. Background Art

[0002] The laboratory is a bridge between clinical medicine and basic medicine, including clinical chemistry, clinical microbiology, clinical immunology, hematology, fluidology, blood transfusion and other branch disciplines. Blood test is an important part of the laboratory. The blood draw volume is generally 2-20 ml, and no more than 50 ml. It is one of the methods commonly used in medicine to test whether the patient's body fluids are normal. Generally, a blood collection pen is used to draw blood from the patient.

[0003] At present, the end of the existing disposable blood collection pen is mostly protected by a needle cap. When in use, the needle cap is removed to expose the blood collection needle and insert it into the patient's body to draw blood from the patient. After the needle cap is removed, the blood collection needle is directly exposed to the outside world. Improper operation may easily cause scratches to the operator or the patient, which is dangerous. Therefore, we propose a disposable blood collection pen. Utility Model Content

[0004] The purpose of the utility model is to provide a disposable blood collection pen to solve the existing problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a disposable blood collection pen, comprising a blood collection pen body, a fixed sleeve and a protective sleeve, wherein a fixed sleeve is fixedly installed on the bottom periphery of the blood collection pen body, and limiting grooves are provided on the inner wall surfaces on both sides of the interior of the fixed sleeve, and a protective sleeve is slidably connected to the inner bottom end of the fixed sleeve, and limiting blocks are fixedly arranged on both sides of the top end of the protective sleeve, and the limiting blocks extend to the interior of the limiting groove and are slidably connected to the inner wall thereof, and an ejection spring is fixedly arranged inside the limiting groove, and the two ends of the ejection spring are respectively fixedly connected to the top wall of the limiting groove and the top of the limiting block.

[0006] Preferably, a blood collection needle is provided at the bottom of the lancing pen body, and the blood collection needle is installed at the bottom center position of the lancing pen body by means of a sleeve connection.

[0007] Preferably, a through slot is formed on the top of the protective sleeve, and the blood collection needle passes through the through slot and extends to the interior of the protective sleeve.

[0008] Preferably, a needle cap is provided on the outer periphery of the bottom of the lancing pen body, and the needle cap is sleeved on the outer periphery of the bottom of the lancing pen body.

[0009] Preferably, a convex edge is provided at the bottom of the protective sleeve, the diameter of the convex edge is larger than the inner circle diameter of the fixing sleeve, and the top of the needle cap is in close contact with the convex edge.

[0010] Preferably, the inner top of the needle cap and the outer periphery of the bottom protrusion of the lancing pen body are both provided with connecting threads, and the needle cap is threadedly connected to the lancing pen body via the connecting threads.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. By arranging a fixed sleeve and a slidable and retractable protective sleeve on the outer periphery of the bottom end of the lancing pen body, the lancing needle is protected. When the lancing pen body is used, the protective sleeve covers the outer periphery of the lancing needle, plays a certain protective role, avoids the risk of accidental scratches, and improves the safety of the lancing pen when in use.

[0013] 2. The ejection spring is provided so that the protective cover has the function of resetting after contraction, so that after blood collection, the contracted protective cover can be quickly ejected with the ejection spring, thereby realizing the automatic protection function and greatly improving the protection effect of the blood collection needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the protective cover structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the internal structure of the protective cover of the utility model.

[0017] In the figure: 1. lancing pen body; 2. fixing sleeve; 3. protective sleeve; 4. limiting groove; 5. ejection spring; 6. limiting block; 7. through groove; 8. convex edge; 9. needle cap; 10. lancing needle; 11. connecting thread. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3The utility model provides a technical solution for a disposable blood collection pen: it includes a blood collection pen body 1, a fixed sleeve 2 and a protective sleeve 3. The fixed sleeve 2 is fixedly installed on the outer periphery of the bottom of the blood collection pen body 1. The inner wall surfaces on both sides of the fixed sleeve 2 are provided with limiting grooves 4. The inner bottom end of the fixed sleeve 2 is slidably connected with the protective sleeve 3. The protective sleeve 3 is made of transparent plastic material. Limiting blocks 6 are fixedly arranged on both sides of the top of the protective sleeve 3. The limiting blocks 6 extend to the inside of the limiting groove 4 and are slidably connected to the inner wall thereof. An ejection spring 5 is fixedly arranged inside the limiting groove 4. The two ends of the ejection spring 5 are respectively fixedly connected to the top wall of the limiting groove 4 and the top of the limiting block 6.

[0020] Specifically, a blood collection needle 10 is provided at the bottom of the lancing pen body 1, and the blood collection needle 10 is installed at the bottom center position of the lancing pen body 1 by means of a sleeve connection.

[0021] Specifically, a through slot 7 is formed on the top of the protective sleeve 3 , and the blood collection needle 10 passes through the through slot 7 and extends to the inside of the protective sleeve 3 .

[0022] Specifically, a needle cap 9 is provided on the outer periphery of the bottom of the lancing pen body 1 , and the needle cap 9 is sleeved on the outer periphery of the bottom of the lancing pen body 1 .

[0023] Specifically, a convex edge 8 is provided at the bottom of the protective sleeve 3 , the diameter of the convex edge 8 is larger than the inner circle diameter of the fixing sleeve 2 , and the top of the needle cap 9 is in close contact with the convex edge 8 .

[0024] Specifically, the inner top of the needle cap 9 and the outer periphery of the bottom protrusion of the lancing pen body 1 are both provided with connecting threads 11, and the needle cap 9 is threadedly connected to the lancing pen body 1 through the connecting threads 11.

[0025] In the present embodiment, under normal conditions, the needle cap 9 is fixed to the bottom of the lancing pen body 1 by connecting the thread 11, the lancing needle 10 is placed inside the needle cap 9, and the protective sleeve 3 is retracted to the inside of the fixing sleeve 2, the ejection spring 5 is in a compressed state, when in use, the needle cap 9 is rotated to remove the needle cap 9 from the bottom of the lancing pen body 1, at this time, under the action of the reset elastic force of the ejection spring 5, the limit block 6 is pushed to slide along the trajectory of the limit groove 4, so that the limit block 6 extends outward with the protective sleeve 3, thereby covering the lancing needle 10 inside to prevent the lancing needle 10 from being exposed, and observing the position of the lancing needle 10 through the protective sleeve 3 made of transparent plastic material, after aligning the lancing needle 10 with the patient's blood collection site, The blood collection needle 10 is inserted into the patient's body, and then the blood collection pen body 1 is operated to collect blood. During the process of the blood collection needle 10 piercing the patient's body, the bottom of the protective sleeve 3 contacts the patient and is subjected to pressure, causing the protective sleeve 3 to shrink toward the inside of the fixed sleeve 2, and the limiting block 6 slides inside the limiting groove 4 and compresses the ejection spring 5. After the blood collection is completed, the blood collection needle 10 is pulled out of the patient's body, and the pressure on the protective sleeve 3 disappears. The ejection spring 5 pushes the limiting block 6 to move along the trajectory of the limiting groove 4 again, thereby pushing the protective sleeve 3 out of the fixed sleeve 2 again, thereby protecting the blood collection needle 10, avoiding the blood collection needle 10 from being directly exposed to the outside, causing accidental scratches, and improving the safety of the blood collection pen body 1 when in use.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A disposable blood collection pen, comprising a blood collection pen body (1), a fixing sleeve (2) and a protective sleeve (3), characterized in that: A fixing sleeve (2) is fixedly installed on the outer periphery of the bottom of the blood collection pen body (1), and limiting grooves (4) are provided on the inner wall surfaces of both sides of the fixing sleeve (2). The inner bottom end of the fixing sleeve (2) is slidably connected with a protective sleeve (3), and limiting blocks (6) are fixedly arranged on both sides of the top of the protective sleeve (3), and the limiting blocks (6) extend to the inside of the limiting groove (4) and are slidably connected with the inner wall thereof. An ejection spring (5) is fixedly arranged inside the limiting groove (4), and the two ends of the ejection spring (5) are respectively fixedly connected with the top wall of the limiting groove (4) and the top of the limiting block (6).

2. A disposable blood collection pen according to claim 1, characterized in that: A blood collection needle (10) is provided at the bottom of the blood collection pen body (1), and the blood collection needle (10) is installed at the center position of the bottom of the blood collection pen body (1) by means of a sleeve connection.

3. A disposable blood collection pen according to claim 2, characterized in that: A through slot (7) is provided on the top of the protective sleeve (3), and the blood collection needle (10) passes through the through slot (7) and extends into the interior of the protective sleeve (3).

4. A disposable blood collection pen according to claim 1, characterized in that: The outer periphery of the bottom of the blood collection pen body (1) is provided with a needle cap (9), and the needle cap (9) is sleeved on the outer periphery of the bottom of the blood collection pen body (1).

5. A disposable blood collection pen according to claim 4, characterized in that: The bottom of the protective sleeve (3) is provided with a convex edge (8), the diameter of the convex edge (8) is larger than the inner circle diameter of the fixing sleeve (2), and the top of the needle cap (9) is in close contact with the convex edge (8).

6. A disposable blood collection pen according to claim 4, characterized in that: The inner top of the needle cap (9) and the outer periphery of the bottom protrusion of the lancing pen body (1) are both provided with connecting threads (11), and the needle cap (9) is threadedly connected to the lancing pen body (1) via the connecting threads (11).

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