Automatic retractable blood collection needle

Abstract

The utility model provides an automatically retractable blood collection needle, relating to the technical field of blood collection needles. The utility model comprises a blood collection needle body, one end of the blood collection needle body is fixedly connected with a hose, one end of the hose is fixedly connected with a connecting plug, a retraction device is arranged on the outer surface of one end of the blood collection needle body, and a protective device is arranged on one end of the connecting plug, the retraction device comprises a groove block and a clamping block, the inner wall of the groove block is slidably connected with the outer surface of one end of the blood collection needle body, and the outer surface of one end of the hose is connected with one side of the groove block through a penetration. The utility model provides a retraction device, and after blood collection is completed, it is only necessary to press the pressing block downward to pull one end of the clamping block out of the clamping groove. Under the resetting action of the first spring, the blood collection needle body can be quickly driven to retract into the inner wall of the groove block, so as to avoid the needle being exposed to the outside after use, causing accidental punctures and cross infections, thereby improving the use effect.

Description

Technical Field

[0001] The utility model relates to the technical field of blood collection needles, in particular to an automatic retractable blood collection needle. Background Art

[0002] A lancet is an instrument used to collect blood samples during medical examinations. It is usually used to puncture peripheral blood vessels. The other end is connected to a blood tube to draw blood into the test tube.

[0003] When using a blood collection needle to collect blood during the blood test, since traditional blood collection needles generally use a single-wing or double-wing needle seat structure, the needle tip is exposed after use, which can easily cause accidental punctures and cross-infections, and can also easily cause environmental pollution, resulting in inconvenience in use. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an automatic retractable blood collection needle.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an automatically retractable blood collection needle, comprising a blood collection needle body, one end of the blood collection needle body is fixedly connected to a hose, one end of the hose is fixedly connected to a connecting plug, a retraction device is arranged on the outer surface of one end of the blood collection needle body, one end of the connecting plug is provided with a protective device, the retraction device comprises a groove block and a card block, the inner wall of the groove block is slidably connected to the outer surface of one end of the blood collection needle body, the outer surface of one end of the hose is connected to one side of the groove block through a penetration, and the inner wall of the groove block is connected to the outer surface of one end of the blood collection needle body. A first spring is symmetrically fixedly connected to the wall, one end of the first spring is fixedly connected to one side of the blood collection needle body, a card slot is opened on one side of the blood collection needle body, a round rod is symmetrically fixedly connected to one side of the card block, the outer surface of the round rod is connected through the inner wall of the groove block, one end of the round rod is fixedly connected to a pressing block, one end of the card block passes through one side of the groove block and extends into the inner wall and is inserted into the inner wall of the card slot, one end of the round rod is sleeved with a second spring on the outer surface of one end, and the two ends of the second spring are respectively fixedly connected to the pressing block and one side of the groove block.

[0006] The effect achieved by the above components is: by setting the retraction device, when using the blood collection needle body for blood collection, it is necessary to manually press the pressing block to one end to a certain position, driving the second spring to contract and at the same time driving the round rod to slide to one end to a certain position in the inner wall of the groove block, driving the card block to slide out from one side of the inner wall of the groove block to the other side, and then holding the single wing on the blood collection needle body to slide it outward to a certain position in the inner wall of the groove block, driving the hose to slide to a certain position, and driving the first spring to stretch, so that the blood collection needle body is completely exposed, then releasing the pressing block, and the second spring Under the resetting action, one end of the card block can be driven to be stuck into the inner wall of the card slot, and the exposed blood collection needle body can be fixed and limited to facilitate the blood collection operation. When collecting blood, the connecting plug is inserted into the test tube, and the blood will flow into the hose through the blood collection needle body, and then flow into the test tube through the connecting plug. After the blood collection is completed, you only need to press the pressing block downward to pull one end of the card block out of the card slot. Under the resetting action of the first spring, the blood collection needle body can be quickly driven to retract into the inner wall of the groove block, so as to avoid the needle being exposed after use, causing accidental punctures and cross infections, thereby improving the use effect.

[0007] Preferably, a plurality of protrusions are fixedly connected to one side of the pressing block, and the plurality of protrusions are arranged at equal distances.

[0008] The effect achieved by the above components is: by setting the protrusion, the contact friction force on one side of the pressing block can be increased, so that when the pressing block is pressed manually, the finger is not likely to slide on the pressing block, which facilitates operation.

[0009] Preferably, a rubber block is fixedly connected to the outer surface of one end of the clamping block, and the rubber block is inserted into the inner wall of the clamping slot with the aid of the clamping block.

[0010] The effect achieved by the above components is that by arranging the rubber block, the card block is not easy to shake after being inserted into the card slot, and the connection can be more firmly, which is convenient for the use of the blood collection needle body.

[0011] Preferably, a telescopic rod is symmetrically fixedly connected to the inner wall of the groove block, one end of the telescopic rod is fixedly connected to one side of the blood collection needle body, and the outer surface of the telescopic rod is sleeve-connected to the inner wall of the first spring.

[0012] The effect achieved by the above components is that by arranging the telescopic rod, the inner wall of the first spring can be supported and reinforced, so that it is not easy to be damaged during use, thereby increasing the service life of the first spring.

[0013] Preferably, sliders are symmetrically fixedly connected to both sides of the blood collection needle body, and sliding grooves are symmetrically opened on both sides of the inner wall of the groove block, and the inner wall of the sliding groove is slidably connected to the outer surface of the slider.

[0014] The effect achieved by the above components is: by providing the slider and the slide groove, the two sides of the blood collection needle body can be limited in the inner wall of the groove block, so that it is not easy to shake when sliding up and down.

[0015] Preferably, the protective device includes a protective cover, a threaded groove is provided on one side of the connecting plug, a threaded ring block is fixedly connected to one side of the protective cover, the outer surface thread of the threaded ring block is inserted into the inner wall of the threaded groove, and one end of the connecting plug is inserted into the inner walls of the protective cover and the threaded ring block.

[0016] The effect achieved by the above-mentioned components is: by setting up the protective device, after the blood collection is completed, the connecting plug is pulled out of the test tube, the protective cover can be manually put on the outer surface of one end of the connecting plug, and then the threaded ring block at one end of the connecting plug is screwed into the threaded groove, so that the protective cover can be fixed on one side after protecting the connecting plug, so that the blood in the hose is not easy to flow out from the inner wall of the connecting plug during the later processing, causing environmental pollution.

[0017] Preferably, a plurality of anti-slip strips are fixedly connected to the outer surface of the protective cover, and the anti-slip strips are made of rubber.

[0018] The effect achieved by the above components is: by setting the anti-slip strip, the contact friction of the outer surface of the protective cover can be increased, so that it is not easy to fall off when it is manually held, and it is convenient to install and remove it.

[0019] Preferably, a connecting rope is fixedly connected to one side of the protective cover, and one end of the connecting rope is fixedly connected to an outer surface of one end of the connecting plug.

[0020] The effect achieved by the above components is that the protective cover can be fixed on the outer surface of one end of the connecting plug by setting the connecting rope, so that it is not easy to be lost when it is removed.

[0021] Compared with the prior art, the advantages and positive effects of the utility model are:

[0022] In the utility model, by providing a retraction device, after the blood collection is completed, it is only necessary to press the pressing block downward to pull one end of the card block out of the card slot. Under the resetting action of the first spring, the blood collection needle body can be quickly driven to retract into the inner wall of the groove block, thereby avoiding the needle tip being exposed to the outside after use, causing accidental punctures and cross infections, and improving the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2This is a schematic diagram of the three-dimensional structure of the body of the blood collection needle of the utility model;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the groove block of the utility model;

[0026] Figure 4 for Figure 3 A three-dimensional schematic diagram of the structure of the middle part;

[0027] Figure 5 It is a three-dimensional structural schematic diagram of the protective cover of the utility model.

[0028] Legend: 1. Blood collection needle body; 2. Retraction device; 3. Protective device; 4. Hose; 5. Connecting plug; 21. Groove block; 22. First spring; 23. Slot; 24. Round rod; 25. Block; 26. Pressing block; 27. Second spring; 28. Bump; 29. ​​Rubber block; 210. Slide groove; 211. Sliding block; 212. Telescopic rod; 31. Threaded groove; 32. Protective cover; 33. Threaded ring block; 34. Anti-slip strip; 35. Connecting rope. DETAILED DESCRIPTION

[0029] Embodiment 1, as Figure 1-5As shown, an automatic retractable blood collection needle comprises a blood collection needle body 1, one end of the blood collection needle body 1 is fixedly connected to a hose 4, one end of the hose 4 is fixedly connected to a connecting plug 5, a retracting device 2 is arranged on the outer surface of one end of the blood collection needle body 1, one end of the connecting plug 5 is provided with a protective device 3, the retracting device 2 comprises a groove block 21 and a clamping block 25, the inner wall of the groove block 21 is slidably connected to the outer surface of one end of the blood collection needle body 1, the outer surface of one end of the hose 4 is connected to one side of the groove block 21, the inner wall of the groove block 21 is symmetrically fixedly connected to a first spring 22, and the first One end of the spring 22 is fixedly connected to one side of the blood collection needle body 1, and a slot 23 is provided on one side of the blood collection needle body 1. A round rod 24 is symmetrically fixedly connected to one side of the clamping block 25. The outer surface of the round rod 24 is connected to the inner wall of the groove block 21 through a penetration, and one end of the round rod 24 is fixedly connected to a pressing block 26. One end of the clamping block 25 passes through one side of the groove block 21 and extends into the inner wall and is then inserted into the inner wall of the slot 23. A second spring 27 is sleeved on the outer surface of one end of the round rod 24, and the two ends of the second spring 27 are respectively fixedly connected to the pressing block 26 and one side of the groove block 21. When the blood collection needle body 1 is used for blood collection, the single-wing slide groove of the blood collection needle body 1 is in a hollow state, which is convenient for the user to observe the blood return phenomenon in the internal hose from the inner wall side of the single-wing slide. When collecting blood, first manually press the pressing block 26 to a certain position at one end, drive the second spring 27 to contract, and at the same time drive the round rod 24 to slide to a certain position at one end in the inner wall of the groove block 21, drive the clamping block 25 to slide out from one side of the inner wall of the groove block 21, and then hold the single wing on the blood collection needle body 1 to slide it outward to a certain position in the inner wall of the groove block 21, drive the hose 4 to slide to a certain position, and drive the first spring 22 to stretch, and the blood collection needle body 1 is completely exposed, at this time, the pressing block 26 is released, and under the reset action of the second spring 27, one end of the card block 25 can be driven to be stuck in the inner wall of the card slot 23, and the exposed blood collection needle body 1 is fixed and limited to facilitate the blood collection operation. When collecting blood, the connecting plug 5 is inserted into the test tube, and the blood will flow into the hose 4 through the blood collection needle body 1, and then flow into the test tube through the connecting plug 5. After the blood collection is completed, it is only necessary to press the pressing block 26 downward to pull one end of the card block 25 out of the card slot 23. Under the reset action of the first spring 22, the blood collection needle body 1 can be quickly driven to retract into the inner wall of the groove block 21, so as to avoid the needle being exposed to the outside after use, causing accidental punctures and cross infections, thereby improving the use effect.

[0030] Reference Figure 2-4As shown, this embodiment discloses that one side of the pressing block 26 is fixedly connected with a plurality of protrusions 28, and the plurality of protrusions 28 are arranged at equal distances. By providing the protrusions 28, the contact friction force on one side of the pressing block 26 can be increased, so that when the pressing block 26 is pressed manually, the finger is not likely to slide on the pressing block 26, and it is convenient to operate it. A rubber block 29 is fixedly connected to the outer surface of one end of the card block 25, and the rubber block 29 is inserted into the inner wall of the card slot 23 with the help of the card block 25. By providing the rubber block 29, the card block 25 is not likely to shake after being inserted into the card slot 23, and can be connected more firmly, which is convenient for the use of the blood collection needle body 1.

[0031] Reference Figure 2-4 As shown, this embodiment discloses that the inner wall of the groove block 21 is symmetrically fixedly connected with a telescopic rod 212, one end of the telescopic rod 212 is fixedly connected to one side of the blood collection needle body 1, and the outer surface of the telescopic rod 212 is sleeved and connected with the inner wall of the first spring 22. By providing the telescopic rod 212, the inner wall of the first spring 22 can be supported and reinforced, so that it is not easy to be damaged during use, and the service life of the first spring 22 is improved. Both sides of the blood collection needle body 1 are symmetrically fixedly connected with sliders 211, and both sides of the inner wall of the groove block 21 are symmetrically provided with slide grooves 210, and the inner wall of the slide groove 210 is slidably connected with the outer surface of the slider 211. By providing the slider 211 and the slide groove 210, the two sides of the blood collection needle body 1 can be limited in the inner wall of the groove block 21, so that it is not easy to shake when sliding up and down.

[0032] Reference Figure 5 As shown, this embodiment discloses that the protection device 3 includes a protection cover 32, a thread groove 31 is provided on one side of the connection plug 5, a threaded ring block 33 is fixedly connected to one side of the protection cover 32, the outer surface of the threaded ring block 33 is threadedly inserted into the inner wall of the thread groove 31, and one end of the connection plug 5 is inserted into the inner wall of the protection cover 32 and the threaded ring block 33. After the blood collection is completed, after the connection plug 5 is pulled out of the test tube, the protection cover 32 can be manually sleeved on the outer surface of one end of the connection plug 5, and then the threaded ring block 33 at one end is screwed into the thread groove 31, so that the protection cover 32 can be fixed and limited on one side after protecting the connection plug 5, so that the blood in the hose 4 is not easy to flow out from the inner wall of the connection plug 5 during the later processing, causing environmental pollution.

[0033] Reference Figure 5As shown, the present embodiment discloses that the outer surface of the protective cover 32 is fixedly connected with a plurality of anti-slip strips 34, and the anti-slip strips 34 are made of rubber. By providing the anti-slip strips 34, the contact friction force of the outer surface of the protective cover 32 can be increased, so that it is not easy to fall off when it is manually held, and it is convenient to install and remove it. A connecting rope 35 is fixedly connected to one side of the protective cover 32, and one end of the connecting rope 35 is fixedly connected to the outer surface of one end of the connecting plug 5. By providing the connecting rope 35, the protective cover 32 can be limited and fixed on the outer surface of one end of the connecting plug 5, so that it is not easy to be lost when it is removed.

[0034] Working principle: when using the blood collection needle body 1 for blood collection, the single-wing slide groove of the blood collection needle body 1 is in a hollow state, so that the user can observe the blood return phenomenon in the internal hose from the inner wall side of the single-wing slide. When collecting blood, first manually press the pressing block 26 to a certain position at one end, drive the second spring 27 to contract, and at the same time drive the round rod 24 to slide to a certain position at one end in the inner wall of the groove block 21, drive the clamping block 25 to slide out from one side of the inner wall of the groove block 21, and then hold the single wing on the blood collection needle body 1 to slide one end and the slider 211 outwards to a certain position in the inner wall of the groove block 21 and the slide groove 210 respectively, drive the hose 4 to slide to a certain position, and drive the first spring 22 and the telescopic rod 212 to stretch, so as to collect blood. The blood collection needle body 1 is completely exposed. At this time, the pressing block 26 is released. Under the reset action of the second spring 27, one end of the block 25 and the rubber block 29 can be driven to be stuck in the inner wall of the slot 23, and the exposed blood collection needle body 1 is fixed and limited to facilitate the blood collection operation. When collecting blood, the connecting plug 5 is inserted into the test tube, and the blood will flow into the hose 4 through the blood collection needle body 1, and then flow into the test tube through the connecting plug 5. After the blood collection is completed, it is only necessary to press the pressing block 26 downward to pull one end of the block 25 out of the slot 23. Under the reset action of the first spring 22, the blood collection needle body 1 can be quickly driven to retract into the inner wall of the groove block 21, so as to avoid the needle being exposed after use, causing accidental punctures and cross infections, thereby improving the use effect.

[0035] After the blood collection is completed and the connecting plug 5 is pulled out of the test tube, the protective cover 32 can be manually sleeved on the outer surface of one end of the connecting plug 5, and then the threaded ring block 33 at one end thereof can be screwed into the threaded groove 31, so that the protective cover 32 can be fixed on one side after protecting the connecting plug 5, so that the blood in the hose 4 is not easy to flow out from the inner wall of the connecting plug 5 during the subsequent processing, causing environmental pollution.

Claims

1. An automatically retractable blood collection needle, comprising a blood collection needle body (1), characterized in that: One end of the blood collection needle body (1) is fixedly connected to a hose (4), and one end of the hose (4) is fixedly connected to a connecting plug (5). A retraction device (2) is provided on the outer surface of one end of the blood collection needle body (1), and one end of the connecting plug (5) is provided with a protective device (3). The retraction device (2) comprises a groove block (21) and a clamping block (25). The inner wall of the groove block (21) is slidably connected to the outer surface of one end of the blood collection needle body (1). The outer surface of one end of the hose (4) is connected to one side of the groove block (21). The inner wall of the groove block (21) is symmetrically fixedly connected to a first spring (22). One end of the first spring (22) is connected to the blood collection needle body (1). One side of the blood collection needle body (1) is fixedly connected, one side of the blood collection needle body (1) is provided with a card slot (23), one side of the card block (25) is symmetrically fixedly connected with a round rod (24), the outer surface of the round rod (24) is connected to the inner wall of the groove block (21), one end of the round rod (24) is fixedly connected with a pressing block (26), one end of the card block (25) passes through one side of the groove block (21) and extends into the inner wall and is then inserted into the inner wall of the card slot (23), one end of the round rod (24) is sleeved with a second spring (27), and the two ends of the second spring (27) are respectively fixedly connected to the pressing block (26) and one side of the groove block (21).

2. The automatic retractable blood collection needle according to claim 1, characterized in that: A plurality of protrusions (28) are fixedly connected to one side of the pressing block (26), and the plurality of protrusions (28) are arranged at equal distances.

3. The automatic retractable blood collection needle according to claim 1, characterized in that: A rubber block (29) is fixedly connected to the outer surface of one end of the clamping block (25), and the rubber block (29) is inserted into the inner wall of the clamping slot (23) with the aid of the clamping block (25).

4. The automatically retractable blood collection needle according to claim 1, characterized in that: A telescopic rod (212) is symmetrically fixedly connected to the inner wall of the groove block (21), one end of the telescopic rod (212) is fixedly connected to one side of the blood collection needle body (1), and the outer surface of the telescopic rod (212) is sleeved and connected to the inner wall of the first spring (22).

5. The automatic retractable blood collection needle according to claim 1, characterized in that: Slide blocks (211) are symmetrically fixedly connected on both sides of the blood collection needle body (1), and slide grooves (210) are symmetrically opened on both sides of the inner wall of the groove block (21), and the inner wall of the slide groove (210) is slidably connected to the outer surface of the slide block (211).

6. The automatic retractable blood collection needle according to claim 5, characterized in that: The protective device (3) comprises a protective cover (32), a thread groove (31) is provided on one side of the connecting plug (5), a threaded ring block (33) is fixedly connected to one side of the protective cover (32), an outer surface of the threaded ring block (33) is threadedly inserted into the inner wall of the thread groove (31), and one end of the connecting plug (5) is inserted into the inner walls of the protective cover (32) and the threaded ring block (33).

7. The automatically retractable blood collection needle according to claim 6, characterized in that: A plurality of anti-slip strips (34) are fixedly connected to the outer surface of the protective cover (32), and the anti-slip strips (34) are made of rubber.

8. The automatically retractable blood collection needle according to claim 6, characterized in that: A connecting rope (35) is fixedly connected to one side of the protective cover (32), and one end of the connecting rope (35) is fixedly connected to the outer surface of one end of the connecting plug (5).

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