Integrated blood taking needle easy to operate

Abstract

The integrated blood taking needle easy to operate comprises a shell, a needle head installation base, a locking sliding sleeve and a blood storage bag shell are sequentially connected in the shell from left to right in a sliding mode, the outer diameter of the needle head installation base and the outer diameter of the locking sliding sleeve are both matched with the inner diameter of the shell, and an unlocking puncture structure is arranged between the needle head installation base and the locking sliding sleeve. Needle holes allowing the puncture needle to penetrate through are formed in the right side of the locking sliding sleeve and the blood storage bag shell; the right end of the shell is open, the left end of the blood storage bag shell abuts against the right end of the locking sliding sleeve, the right end of the blood storage bag shell extends out of the shell, and an anti-disengaging buckle is arranged on the outer side wall of the blood storage bag shell. A blood storage bag is arranged in the blood storage bag shell, a pressing structure for extruding the blood storage bag is further arranged in the shell, a check ring for the blood storage bag to abut against is arranged at the right end of the locking sliding sleeve, and an opening for the pressing structure to stretch into is formed in the left end of the blood storage bag shell. Operation can be completed with one hand, a patient can complete blood sampling by himself / herself, and operation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of medical tools, and particularly relates to an integrated blood collection needle which is easy to operate. Background Art

[0002] For blood type detection, blood glucose detection, uric acid detection, micro-method erythrocyte sedimentation rate, micro-hematocrit and other tests, capillary blood collection is required, and the capillary blood collection takes fingertip blood or earlobe blood. The existing capillary blood collection methods mostly use fingertip blood collection, that is, after using a blood collection needle to puncture the finger surface, the finger is squeezed, and then the squeezed blood is collected by a capillary tube and then transferred to a container for storage or directly detected. This process has many steps and requires switching different tools, bringing a lot of inconvenience to some patients who need to often complete blood collection by themselves, and there is also a risk of contaminating the human body or blood sample when the wound is exposed to the air for a long time.

[0003] CN209315887U discloses a new type of blood collection needle, including a needle tube and a holding part arranged at the tail end of the needle tube. An elastic blood storage sac is arranged on the holding part, and the needle tube is used as a blood suction channel to directly suck blood. This technical solution requires the tip of the needle tube to be inserted into the human body all the time until the blood sucking is completed, and a certain insertion depth needs to be maintained all the time, with high operation difficulty and the risk of secondary insertion of the needle tube. Therefore, it is necessary to propose an easy-to-operate blood collection device that integrates skin puncture and blood sample collection. Content of the Utility Model

[0004] The utility model aims to solve the technical problems existing in the prior art, and particularly innovatively proposes an easy-to-operate integrated blood collection needle, which can be operated with one hand, and patients can complete blood collection by themselves, with simple operation.

[0005] To achieve the above object, the utility model provides an easy-to-operate integrated blood collection needle, including a housing. A needle head mounting seat, a locking sliding sleeve and a blood storage sac housing are sequentially and slidably connected in the housing from left to right. The outer diameters of the needle head mounting seat and the locking sliding sleeve match the inner diameter of the housing. A first compression spring is arranged between the left side of the needle head mounting seat and the left side wall of the housing. A puncture needle is horizontally mounted on the right side of the needle head mounting seat. A second compression spring is arranged between the needle head mounting seat and the locking sliding sleeve, and the elastic coefficient of the first compression spring is greater than that of the second compression spring. The first compression spring is in a compressed state in the initial state. An unlocking puncture structure for unlocking the puncture needle is arranged between the needle head mounting seat and the locking sliding sleeve. Needle holes for the puncture needle to pass through are arranged on both the right side of the locking sliding sleeve and the blood storage sac housing. When the second compression spring is in the maximum compressed state, it can just make the puncture needle pierce out of the blood storage sac housing.

[0006] The right end of the shell is open, the left end of the blood storage bag shell is against the right end of the locking sleeve, the right end of the blood storage bag shell extends out of the shell, and an anti-drop buckle is provided on the outer side wall of the blood storage bag shell;

[0007] A blood storage bag is arranged in the blood storage bag shell, and a compression structure for squeezing the blood storage bag is also arranged in the shell. A retaining ring for the blood storage bag to abut against is arranged at the right end of the locking sleeve, and an opening for the compression structure to extend into is arranged at the left end of the blood storage bag shell. The compression structure passes through the retaining ring to squeeze the blood storage bag, and the blood storage bag is squeezed by the compression piece. A yield structure for the puncture needle to pass through is provided on the compression structure.

[0008] The locking mechanism is configured to lock the locking cam of the locking cam and lock the locking cam in a manner that the locking cam can move relative to the locking cam when the locking cam is in a locked position.

[0009] In the above solution: the shell is equipped with a sealing cover for covering the blood storage bag shell, thereby improving hygiene and avoiding external contamination as much as possible.

[0010] In the above scheme: the clamping structure includes a push block slidably connected to the outside of the shell and a clamping piece located in the locking sleeve for squeezing the blood storage bag. The push block passes through the shell, the locking sleeve and is fixedly connected to the clamping piece. The shell and the locking sleeve are both provided with sliding strip holes for the push block to slide left and right, which can stably squeeze the blood storage bag, thereby ensuring the subsequent absorption of the punctured blood.

[0011] In the above scheme: the clamping member includes a connecting ring and a clamping ring arranged at intervals on the left and right, a cross bar is connected between the connecting ring and the clamping ring, the push block is arranged at the top of the shell, the push rod is arranged at the top of the connecting ring, and the push rod passes through the shell and the locking sleeve in turn to be connected to the push block, and the structure is simple.

[0012] In the above solution: the top of the shell is provided with a push guide slot for the push block to slide left and right, and the sliding bar hole of the shell is provided at the bottom of the push guide slot to improve the pushing efficiency.

[0013] In the above solution, a puncture channel is recessed on the left side of the blood storage bag, and the puncture channel is used for the puncture needle to pass through, which can ensure that the needle holes of the blood storage bag punctured by the puncture needle are located on the same side, which is convenient for subsequent squeezing out of the stored blood.

[0014] In the above solution, the blood storage bag is made of rubber, which is a simple and easily available material.

[0015] In summary, the beneficial effects of the present invention are as follows: the unlocking puncture structure provided can lock the puncture needle in a retracted state, and can be unlocked when the finger presses the blood storage bag shell. After unlocking, the puncture needle punctures the finger under the action of the first compression spring, and the operation is simple. The blood storage bag provided can squeeze out the air under the action of the compression structure, and a negative pressure space is formed inside it, thereby sucking in the blood on the finger for storage. The blood storage bag is only punctured when the puncture needle is pierced, which can ensure that the inside of the blood storage bag is not contaminated by external air as much as possible. The puncture and storage of blood samples are integrated, with a simple structure and easy operation. After storage, the blood storage bag shell can be removed, the blood storage bag can be taken out, and sent to the detection equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the present utility model.

[0017] Figure 2 It is a cross-sectional view of the present utility model.

[0018] Figure 3 This is a schematic diagram of unlocking.

[0019] Figure 4 This is a schematic diagram of the puncture needle.

[0020] Figure 5 It is a schematic diagram of unlocking the limit slide, pressing the wedge block, and rotating the wedge block. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the following embodiments and accompanying drawings:

[0022] like Figures 1 to 5As shown, an easy-to-operate integrated blood collection needle includes a shell 1, in which a needle mounting seat 5, a locking sleeve 33 and a blood storage bag shell 34 are slidably connected from left to right in sequence. The outer diameters of the needle mounting seat 5 and the locking sleeve 33 match the inner diameter of the shell 1, and a first compression spring 51 is provided between the left side of the needle mounting seat 5 and the left side wall of the shell 1. A puncture needle 53 is horizontally installed in the center of the right side of the needle mounting seat 5, and a second compression spring 52 is provided between the needle mounting seat 5 and the locking sleeve 33, and the elastic coefficient of the first compression spring 51 is greater than the elastic coefficient of the second compression spring 52. The initial state of the first compression spring 51 is a compressed state, and an unlocking puncture structure for unlocking the puncture needle 53 is provided between the needle mounting seat 5 and the locking sleeve 33. There are needle holes for the puncture needle 53 to pass through on the right side of the locking sleeve 33 and the blood storage bag shell 34. When the second compression spring 52 is in the maximum compression state, it can just enable the puncture needle 53 to pierce out of the blood storage bag shell 34.

[0023] The unlocking puncture structure includes an unlocking limit slide groove 33a provided on the inner side wall of the locking sliding sleeve 33, and the unlocking limit slide groove 33a is connected to the left and right sides. A rotating wedge block 54 is provided on the right side of the needle mounting seat 5 and extends into the unlocking limit slide groove 33a. The length of the unlocking limit slide groove 33a extending up and down is greater than the length of the rotating wedge block 54 extending up and down. The wedge surface of the rotating wedge block 54 is set lower on the left and higher on the right. The rotating wedge block 54 abuts against the bottom side of the unlocking limit slide groove 33a, and the part where the unlocking limit slide groove 33a abuts against the rotating wedge block 54 is provided with a wedge surface that fits therewith. A pressing wedge block 11 is provided in the unlocking slide groove, and the left end of the pressing wedge block 11 is a wedge surface that is lower on the left and higher on the right. The right end of the pressing wedge block 11 is provided with a fixed connection between the locking sliding sleeve 33 and the housing 1, and a yield bar hole is provided in the unlocking limit slide groove 33a corresponding to the pressing wedge block 11.

[0024] The right end of the housing 1 is open, and the left end of the blood reservoir housing 34 abuts the right end of the locking sleeve 33, extending outside the housing 1. The housing 1 is equipped with a sealing cap 4 that covers the blood reservoir housing 34, enhancing hygiene and minimizing external contamination. An anti-detachment latch 32 is provided on the outer wall of the blood reservoir housing 34. The blood reservoir 31 is housed within the blood reservoir housing 34, allowing the blood reservoir housing 34 to be removed, thereby removing the blood reservoir 31.

[0025] Housing 1 also houses a compression structure 2 for squeezing the blood reservoir 31. The right end of the locking sleeve 33 is equipped with a retaining ring against which the blood reservoir 31 abuts. The left end of the blood reservoir housing 34 includes an opening for the compression structure 2, which passes through the retaining ring to squeeze the blood reservoir 31. The blood reservoir 31 is squeezed by the compression member 22, and the compression structure 2 is equipped with a clearance structure for the puncture needle 53 to pass through.

[0026] The pressing structure 2 includes a pushing block 21 slidably connected to the outside of the housing 1 and a pressing member 22 located inside the locking sleeve 33 for squeezing the blood storage bag 31. The pushing block 21 passes through the housing 1 and the locking sleeve 33 and is fixedly connected to the pressing member 22. Both the housing 1 and the locking sleeve 33 are provided with sliding strip holes for the pushing block 21 to slide left and right, which can stably squeeze the blood storage bag 31, thus ensuring the subsequent suction of the pricked blood.

[0027] The pressing member 22 includes a connecting ring and a pressing ring arranged at intervals left and right. A cross bar is connected between the connecting ring and the pressing ring. The pushing block 21 is arranged at the top of the housing 1, and a push rod is arranged at the top of the connecting ring. The push rod passes through the housing 1 and the locking sleeve 33 in sequence and is connected to the pushing block 21, with a simple structure. A pushing guiding chute 23 for the pushing block 21 to slide left and right is arranged at the top of the housing 1, and the sliding strip hole of the housing 1 is arranged at the bottom of the pushing guiding chute 23, which improves the pushing efficiency.

[0028] A puncture channel 31a is concavely provided on the left side of the blood storage bag 31 for the puncture needle 53 to pass through, which can ensure that the puncture holes of the blood storage bag 31 punctured by the puncture needle 53 are on the same side, facilitating the subsequent extrusion of the stored blood. Among them, the blood storage bag 31 is made of rubber, and the material is simple and easy to obtain.

[0029] During use, after the patient selects the position on the finger that needs to be blood sampled and aligns it with the hole in the middle of the blood storage bag 31, a slight inward pressure is applied. At this time, the locking sleeve 33 pushes the rotating wedge block 54 in the puncture assembly 5. When the rotating wedge block 54 exceeds the pressing wedge block 1, the compressed first compression spring 51 is released, shooting the puncture assembly 5 as a whole towards the finger direction and completing the puncture by the puncture needle 53. Subsequently, the second compression spring 52 is compressed and then rebounds, retracting the puncture needle 53 into the device interior.

[0030] After puncture, massage the finger to squeeze out and wipe off the tissue fluid on the skin surface, and then continue to squeeze out an appropriate amount of blood. Push the injection button 21 forward to compress the internal space of the rubber blood storage bag 31, and then align it with the blood bead on the finger. Pull the pushing block 21 backward to generate negative pressure in the blood storage bag 31 and collect the blood on the finger.

[0031] After the collection is completed, pinch the main body of the housing 1 and the outer shell of the blood storage bag 34 and pull outward to release the anti - detachment buckle 32. Subsequently, the blood in the blood storage bag 31 can be used for various detections, and gently applying pressure behind the blood storage bag 31 can squeeze out the blood.

Claims

1. An integrated blood collection needle that is easy to operate, characterized in that: The invention comprises a shell (1), wherein a needle mounting seat (5), a locking sleeve (33) and a blood storage bag shell (34) are slidably connected in sequence from left to right in the shell (1), the outer diameters of the needle mounting seat (5) and the locking sleeve (33) are matched with the inner diameter of the shell (1), a first compression spring (51) is provided between the left side of the needle mounting seat (5) and the left side wall of the shell (1), a puncture needle (53) is horizontally installed at the center of the right side of the needle mounting seat (5), and a second compression spring (51) is provided between the needle mounting seat (5) and the locking sleeve (33). 2), and the elastic coefficient of the first compression spring (51) is greater than the elastic coefficient of the second compression spring (52), the initial state of the first compression spring (51) is a compressed state, an unlocking puncture structure for unlocking the puncture needle (53) is provided between the needle mounting seat (5) and the locking sleeve (33), and a needle hole for the puncture needle (53) to pass through is provided on the right side of the locking sleeve (33) and the blood storage bag shell (34), and the second compression spring (52) is in the maximum compression state, which can just make the puncture needle (53) pierce out of the blood storage bag shell (34); The right end of the shell (1) is open, the left end of the blood storage bag shell (34) abuts against the right end of the locking sleeve (33), the right end of the blood storage bag shell (34) extends outside the shell (1), and an anti-drop buckle (32) is provided on the outer side wall of the blood storage bag shell (34); A blood storage bag (31) is arranged in the blood storage bag shell (34), and a pressing structure (2) for squeezing the blood storage bag (31) is also arranged in the shell (1). A retaining ring for the blood storage bag (31) to abut against is arranged at the right end of the locking sleeve (33), and an opening for the pressing structure (2) to extend into is arranged at the left end of the blood storage bag shell (34). The pressing structure (2) passes through the retaining ring to squeeze the blood storage bag (31), and squeezes the blood storage bag (31) through the pressing member (22). A yield structure for the puncture needle (53) to pass through is arranged on the pressing structure (2).

2. An easy-to-operate integrated blood collection needle according to claim 1, characterized in that: The unlocking puncture structure includes an unlocking limit slide groove (33a) provided on the inner side wall of the locking slide sleeve (33), the unlocking limit slide groove (33a) is connected to the left and right sides, and a rotating wedge block (54) extending into the unlocking limit slide groove (33a) is provided on the right side of the needle mounting seat (5), the length of the unlocking limit slide groove (33a) extending up and down is greater than the length of the rotating wedge block (54) extending up and down, the wedge surface of the rotating wedge block (54) is set lower on the left and higher on the right, and the rotating wedge block (54) and the unlocking limit slide groove ( The bottom side of the locking sleeve (33) is abutted against the bottom side of the locking sleeve (33), and a wedge surface that fits the unlocking limit slot (33a) is provided at the position where the unlocking limit slot abuts against the rotating wedge block (54), a pressing wedge block (11) is provided in the unlocking limit slot and is pressed on the rotating wedge block (54), the left end of the pressing wedge block (11) is a wedge surface with a lower left side and a higher right side, the right end of the pressing wedge block (11) is provided with a fixed connection with the housing (1) through the locking sleeve (33), and a clearance strip hole is provided in the unlocking limit slot (33a) corresponding to the pressing wedge block (11).

3. The integrated blood collection needle according to claim 2, which is easy to operate, is characterized in that: The housing (1) is equipped with a sealing cover (4) for covering the blood storage bag housing (34).

4. An easy-to-operate integrated blood collection needle according to claim 1, characterized in that: The compression structure (2) comprises a push block (21) slidably connected to the outside of the housing (1) and a compression member (22) located in a locking sleeve (33) for squeezing the blood storage bag (31); the push block (21) passes through the housing (1), the locking sleeve (33) and is fixedly connected to the compression member (22); and the housing (1) and the locking sleeve (33) are both provided with a sliding bar hole for the push block (21) to slide left and right.

5. An integrated blood collection needle that is easy to operate according to claim 4, wherein: The pressing member (22) includes a connecting ring and a pressing ring spaced apart from each other on the left and right sides, a cross bar is connected between the connecting ring and the pressing ring, the push block (21) is arranged on the top of the housing (1), the push rod is arranged on the top of the connecting ring, and the push rod passes through the housing (1) and the locking sleeve (33) in sequence to be connected to the push block (21).

6. An easy-to-operate integrated blood collection needle according to claim 4, characterized in that: The top of the housing (1) is provided with a push guide slot (23) for the push block (21) to slide left and right, and the sliding strip hole of the housing (1) is provided at the bottom of the push guide slot (23).

7. An easy-to-operate integrated blood collection needle according to claim 1, characterized in that: A puncture channel (31a) is recessed on the left side of the blood storage bag (31), and the puncture channel (31a) is used for allowing a puncture needle (53) to pass through.

8. An easy-to-operate integrated blood collection needle according to claim 7, characterized in that: The blood storage bag (31) is made of rubber.

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