Automatic arteriovenous blood extraction device capable of measuring blood glucose

Abstract

The present application relates to the technical field of medical devices, and discloses an automatic arteriovenous blood extraction device capable of measuring blood glucose, which comprises a shell and a blood sampling needle tube, the blood sampling needle tube comprises a puncture needle and a needle cylinder, and the puncture needle is in sliding sealing connection with the needle cylinder; a sliding assembly and a poking assembly are arranged in the shell, the sliding assembly comprises a sliding seat, a clamping channel penetrating through the sliding seat is arranged on the sliding seat, the poking assembly is arranged beside the sliding seat and is used for pushing the sliding seat to move, and a scale line is further arranged on the poking assembly; the shell is provided with a fixed cavity and a sliding cavity which are in communication with each other from top to bottom, the sliding seat is slidingly arranged in the sliding cavity, the needle cylinder of the blood sampling needle tube extends from one end of the shell to the fixed cavity, and the puncture needle penetrates out of the clamping channel of the sliding seat; a limiting support is further arranged at the bottom of the shell, a detector for detecting a blood vessel is arranged on the limiting support, and a through hole through which the puncture needle penetrates is arranged on the detector. The present application can solve the technical problems of great puncture difficulty and low accuracy of the existing arterial blood sampling.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an automatic arterial and venous blood extraction device capable of measuring blood glucose. Background Technology

[0002] Blood sampling is a routine clinical procedure, involving both venous and arterial blood samples. Common tests, such as complete blood count (CBC), blood biochemistry, tumor markers, erythrocyte sedimentation rate (ESR), and rheumatoid factor, typically use venous blood. Venous blood sampling is simple, convenient, and requires minimal technical skill. However, arterial blood is usually used for blood oxygenation analysis and acid-base balance assessment. Arterial blood can also be used to diagnose conditions like respiratory failure and pulmonary embolism. However, arteries are often located deep within the body and are difficult to access. For example, when drawing arterial blood from the radial artery in the arm, the common procedure involves healthcare professionals confirming the puncture site by feeling the pulse strength in the patient's arm. A needle is then inserted into the artery, and arterial blood is pumped into the collection tube under pressure. The needle is then withdrawn, and pressure is applied to stop the bleeding. The above-mentioned blood drawing method has the following technical problems in actual use: it is difficult to determine the puncture location and depth by relying on human experience. Only experienced and mature medical staff can be competent to draw arterial blood. Inexperienced medical staff often make puncture deviations during puncture, which can lead to multiple punctures or rupture of blood vessels, causing great puncture pain to patients. Summary of the Invention

[0003] The present invention aims to provide an automated arterial and venous blood extraction device capable of measuring blood glucose, in order to solve the technical problems of high difficulty in puncture and low accuracy in existing arterial blood collection.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An automated arterial and venous blood collection device for measuring blood glucose includes a housing and a blood collection needle tube detachably disposed within the housing. The blood collection needle tube includes a puncture needle and a syringe barrel, with the puncture needle and syringe barrel slidably and sealed together. The housing contains a sliding assembly for clamping the puncture needle and a actuating assembly for driving the sliding assembly to move. The sliding assembly includes a slide block with a through clamping channel. The actuating assembly is disposed beside the slide block for pushing the slide block to move and also has graduations for displaying the depth of needle insertion. The housing has a fixed cavity and a sliding cavity communicating with each other from top to bottom. The slide block is slidably disposed within the sliding cavity. The syringe barrel of the blood collection needle tube extends from one end of the housing into the fixed cavity, and the puncture needle exits through the clamping channel of the slide block. A limiting bracket is also provided at the bottom of the housing, and a detector for detecting blood vessels is disposed on the limiting bracket. The detector has a through hole for the puncture needle to pass through.

[0006] The principle and advantages of this scheme are:

[0007] 1. By installing a detector at the bottom of the housing, the location and depth of the artery can be determined before puncture. This is more accurate than determining the puncture location by manually pressing the pulse. A sliding seat is installed inside the housing to clamp the puncture needle. Since the puncture needle is dynamically sealed to the syringe, when the sliding seat is driven downward by the actuating component, the sliding seat moves the puncture needle in, thus achieving puncture. Because the actuating component is equipped with scale lines, the needle insertion distance can be determined according to the location and depth of the blood vessel (in addition, if the detector can only accurately determine the location of the blood vessel, the needle insertion distance can be gradually adjusted through the scale lines). Compared with the existing method of puncture needle insertion relying solely on the doctor's experience, this method can avoid the problem of the puncture needle puncturing the blood vessel, reduce the difficulty of puncture, and improve the success rate and accuracy of puncture for less experienced medical personnel, while avoiding the greater puncture pain caused to patients by multiple punctures.

[0008] 2. The blood collection needle is detachably connected to the housing, making it easy to replace the blood collection needle. The housing can be recycled after sterilization, reducing medical costs. In addition, different types of blood collection needles can be replaced, such as venous blood collection needles and blood glucose blood collection needles, which can be used for venous blood collection and blood glucose analysis of the collected blood samples at the same time.

[0009] 3. The puncture needle and syringe are connected in a sliding seal. During use, the sliding seat is moved by the actuating component, which in turn drives the puncture needle to enter the needle. Compared with the existing fixed structure of puncture needle and syringe, this application makes it easier to control the depth of puncture needle insertion and can reduce the problem of puncture failure caused by deviation during the puncture process.

[0010] 4. A clamping channel is provided inside the sliding seat. When the puncture needle passes through the clamping channel, the puncture needle can be clamped, so that the puncture needle and the sliding seat become a whole. This makes it easy to move the puncture needle through the sliding seat for needle insertion, and the operation is simple and convenient.

[0011] 5. The detector is equipped with a through hole for the puncture needle to pass through, which can ensure that the puncture position detected by the detector and the puncture needle insertion position are in the same area, while the detector will not affect the normal insertion of the puncture needle.

[0012] Preferably, as an improvement, the actuating assembly includes an actuating gear with scale lines on it; the housing also has a mounting cavity, one side of which communicates with the sliding cavity and the other side with the outside; the actuating gear is located inside the mounting cavity and partially extends out of the mounting cavity to the outside; the slide block has an actuating rack that meshes with the actuating gear on the side near the actuating gear, and rotating the actuating gear drives the slide block to move up and down in the sliding cavity.

[0013] Beneficial effects: By rotating the gear, the slide moves. Compared with the existing method of using a spring-loaded lever to control needle insertion, this application has higher controllability and precision. In addition, the gear is marked with scale lines, which can be used to understand the current needle insertion depth and avoid blood vessel rupture due to deep puncture.

[0014] Preferably, as an improvement, the housing is further provided with an adjustment mechanism for adjusting the height of the detector. The adjustment mechanism includes an intermediate gear and a first adjustment rack and a second adjustment rack that mesh with the intermediate gear. An adjustment cavity is provided inside the housing. The intermediate gear is rotatably disposed in the adjustment cavity. The first adjustment rack is slidably disposed on the inner wall of the adjustment cavity. The second adjustment rack is disposed on the side wall of the slide. The detector is fixed on the first adjustment rack by a connecting rod. One end of the connecting rod passes through the housing and is slidably connected to the housing.

[0015] Beneficial effects: By setting an adjustment mechanism, when the rotating gear drives the slide to slide downward, the second adjusting rack drives the middle gear to rotate clockwise, which in turn drives the first adjusting rack to move upward. The first adjusting rack drives the connecting rod to move upward, thereby causing the detector to move upward. That is, when the puncture needle penetrates the skin, the detector moves to the side away from the skin, which can avoid contamination of the detector when penetrating the skin.

[0016] Preferably, as an improvement, an elastic pad is also provided on the inner wall of the clamping channel.

[0017] Beneficial effect: The elastic pad further clamps the puncture needle, preventing relative sliding between the puncture needle and the slide.

[0018] Preferably, as an improvement, the blood collection needle also includes a flexible tube, one end of which is connected to the bottom of the syringe and the other end of which is connected to the puncture needle.

[0019] Beneficial effects: It can also be used with blood collection needles with tubing, making it widely applicable.

[0020] Preferably, as an improvement, the bottom of the slide is also provided with a clamping assembly extending out of the sliding cavity. The clamping assembly includes a rubber sleeve and an elastic clamp for squeezing the rubber sleeve, through which the puncture needle passes.

[0021] Beneficial effects: The clamping component can further clamp the puncture needle. After long-term use, the clamping force of the clamping channel on the puncture needle decreases. At this time, an elastic clamp can be put on the rubber sleeve. The elastic clamp squeezes the rubber sleeve, thereby making the rubber sleeve more firmly fix the puncture needle and ensure that the puncture needle is fixedly connected to the slide.

[0022] Preferably, as an improvement, it also includes a fixing bracket for fixing the arm, the fixing bracket having an arc-shaped groove and a soft pad inside the arc-shaped groove.

[0023] Beneficial effects: The fixation support can limit and fix the patient's arm, preventing the puncture from shifting due to the patient's arm movement during puncture, and the soft pad can improve the comfort of use.

[0024] Preferably, as an improvement, the syringe also contains a blood glucose test strip. The blood glucose test strip allows for blood glucose testing of the collected blood sample.

[0025] Preferably, as an improvement, the detector is an infrared temperature sensor. The location and depth of the artery are determined by utilizing the temperature difference between arterial blood and the skin.

[0026] Preferably, as an improvement, the housing is also provided with a controller and a display screen, both of which are electrically connected to the controller.

[0027] Beneficial effects: The detector transmits the detected signal to the controller, which processes it and displays the location or depth of the blood vessel on the screen. Attached Figure Description

[0028] Figure 1 This is a cross-sectional view of Embodiment 1 of the present invention.

[0029] Figure 2 for Figure 1 A cross-sectional view from another direction.

[0030] Figure 3 This is a schematic diagram of the venous blood collection needle in Embodiment 1 of the present invention.

[0031] Figure 4 This is a schematic diagram of the blood glucose collection needle in Embodiment 1 of the present invention.

[0032] Figure 5 This is Embodiment 1 of the present invention. Figure 1 An enlarged schematic diagram of the central adjustment mechanism.

[0033] Figure 6 This is a schematic diagram of the blood collection needle in Embodiment 2 of the present invention.

[0034] Figure 7 This is a schematic diagram of the structure in Embodiment 3 of the present invention.

[0035] Figure 8 This is a schematic diagram of the shell structure in Embodiment 4 of the present invention.

[0036] Figure 9 This is a schematic diagram of the structure in Embodiment 5 of the present invention.

[0037] Figure 10 This is a schematic diagram of the structure in Embodiment Six of the present invention. Detailed Implementation

[0038] The following detailed description illustrates the specific implementation method:

[0039] The reference numerals in the accompanying drawings include: housing 1, fixing cavity 11, artery 100, first housing 111, second housing 112, buckle 1121, sliding cavity 12, limiting groove 121, limiting rod 122, mounting cavity 13, adjusting cavity 15, sliding groove 151, limiting bracket 16, puncture needle 21, drainage tube 211, syringe 22, blood glucose test strip 222, tubing 23, slide 3, clamping channel 31, elastic pad 311, actuating rack 32, actuating gear 4, scale line 41, adjusting mechanism 5, intermediate gear 51, first adjusting rack 52, second adjusting rack 53, detector 6, connecting rod 61, rubber sleeve 71, elastic clamp 72, display screen 8, fixing support 9, arc-shaped groove 91, support support 92, opening 921.

[0040] Example 1

[0041] like Figure 1-5 As shown: An automatic arterial and venous blood collection device for measuring blood glucose includes a housing 1 and a blood collection needle detachably disposed within the housing 1. Specifically, in this embodiment, the blood collection needle includes a puncture needle 21 and a syringe 22, with the puncture needle 21 and syringe 22 slidably and sealingly connected. During use, the blood collection needle can be replaced as needed, for example, with a venous blood collection needle or a blood glucose collection needle, as detailed below. Figure 3 As shown, the venous blood collection needle also includes a drainage tube 211. The bottom of the drainage tube 211 is connected to the puncture needle 21, and the top of the drainage tube 211 extends out of the syringe 22 and is slidably connected to the top of the syringe 22. It can be connected to existing blood collection tubes for convenient storage after blood collection. Figure 4 As shown, the syringe 22 of the blood glucose sampling needle contains a blood glucose test strip 222, which can be used for both venous blood collection and blood glucose analysis of the collected blood sample. This embodiment will be described in detail using arterial blood from the radial artery in the arm as an example.

[0042] like Figure 1 As shown, the housing 1 is provided with a sliding assembly for clamping the puncture needle 21 and a toggle assembly for driving the sliding assembly to move. The sliding assembly includes a slide 3, on which a through clamping channel 31 is provided. In order to further ensure the clamping effect, an elastic pad 311 is also provided in the clamping channel 31. The elastic pad 311 can be made of rubber or silicone. The toggle assembly is located on one side of the slide 3 for pushing the slide 3 to move. The toggle assembly is also provided with a scale line 41 for displaying the insertion depth of the puncture needle 21.

[0043] Specifically, the housing 1 has a fixed cavity 11 and a sliding cavity 12 that are interconnected from top to bottom. The top of the fixed cavity 11 is connected to the outside, and the bottom of the sliding cavity 12 is connected to the outside. The slide block 3 is slidably disposed in the sliding cavity 12. Figure 2 As shown, in order to limit the slide block 3 and prevent it from detaching from the sliding cavity 12 when sliding within the sliding cavity 12, this embodiment also provides a limiting rod 122 on the side wall of the slide block 3, and a limiting groove 121 for the limiting rod 122 to be inserted into is provided on the inner wall of the sliding cavity 12. The limiting groove 121 is arranged along the vertical direction of the sliding cavity 12. The syringe 22 of the blood collection needle extends from the top of the housing 1 to the fixed cavity 11 and is tensioned and connected to the fixed cavity 11. The puncture needle 21 passes through the clamping channel 31 of the slide block 3.

[0044] like Figure 1 As shown, the actuating assembly includes an actuating gear 4, with scale lines 41 arranged around the actuating gear 4. The housing 1 also has a mounting cavity 13, one side of which is connected to the sliding cavity 12, and the other side has a strip-shaped opening for communication with the outside. The actuating gear 4 is arranged in the mounting cavity 13, with a portion extending into the sliding cavity 12 and the other portion extending out of the strip-shaped opening of the mounting cavity 13 to the outside. The slide block 3 has an actuating rack 32 that meshes with the actuating gear 4 on the side near the actuating gear 4. By rotating the actuating gear 4, the slide block 3 is driven to move up and down in the sliding cavity 12.

[0045] The bottom of the housing 1 is also provided with a limiting bracket 16. There is a distance between the inner side of the bottom of the limiting bracket 16 and the bottom of the sliding cavity 12 for the slide seat 3 to slide. The bottom of the limiting bracket 16 is provided with a detector 6 for detecting blood vessels. When in use, the bottom of the limiting bracket 16 contacts the skin, so that the detector 6 contacts the skin. The detector 6 is also provided with a through hole for the puncture needle 21 to pass through. In this embodiment, the detector 6 adopts an existing infrared temperature sensor, which uses the temperature difference between arterial blood and skin to determine the position or depth of arterial blood. In this embodiment, the detector 6 is slidably disposed at the bottom of the limiting bracket 16. Specifically, the bottom of the limiting bracket 16 is provided with a through hole, and the detector 16 is located in the through hole. The housing 1 is also provided with an adjustment mechanism 5 for adjusting the height of the detector 6.

[0046] like Figure 5 As shown, the adjustment mechanism 5 includes an intermediate gear 51 and a first adjustment rack 52 and a second adjustment rack 53 that mesh with the intermediate gear 51; an adjustment cavity 15 is provided inside the housing 1, and the adjustment cavity 15 is connected to the sliding cavity 12. The intermediate gear 51 is rotatably disposed in the adjustment cavity 15, and the first adjustment rack 52 is slidably disposed on the inner wall of the adjustment cavity 15. In order to limit the first adjustment rack 52, a sliding groove 151 is provided on the inner wall of the adjustment cavity 15, and the first adjustment rack 52 is slidably disposed in the sliding groove 151. The second adjustment rack 53 is disposed on the side wall of the slide block 3, and the second adjustment rack 53 extends into the adjustment cavity 15 and meshes with the intermediate gear 51; the detector 6 is fixed to the first adjustment rack 52 by a connecting rod 61. The connecting rod 61 has an L-shaped structure, and the vertical rod of the connecting rod 61 passes through the housing 1 and is slidably connected to the housing 1.

[0047] In this embodiment, a sterile cloth is also provided on the side of the limiting bracket 16 closest to the skin. The sterile cloth is attached to the limiting bracket 16 and is replaced with a new sterile cloth during use. Specifically, the method of using an automatic arterial and venous blood extraction device capable of measuring blood glucose is as follows:

[0048] First, install the blood collection needle on the housing 1, then make the bottom of the limiting bracket 16 contact the arm. Use the detector 6 to determine the position of the artery 100. After determining the position, manually push the actuating gear 4 to rotate. The rotation of the actuating gear 4 drives the actuating rack 32 to move downward, which in turn drives the slide 3 to move downward. Since the clamping channel 31 of the slide 3 clamps the puncture needle 21, the puncture needle 21 moves downward with the slide 3 to perform puncture. During this process, the depth of insertion of the puncture needle 21 can be checked by turning the scale line 41 on the actuating gear 4. When the puncture needle 21 pierces the artery 100, due to the high pressure inside the blood vessel, arterial blood enters the needle tube from the puncture needle 21, thereby realizing automatic blood sample collection. Because an adjustment mechanism 5 is set, when the puncture needle 21 is inserted, the detector 6 moves upward away from the skin along with the connecting rod 61 (e.g., Figure 1 (As shown by the dashed line in the middle) This can prevent contamination of the detector 6 when the skin is pierced; when the blood sample collected reaches the required amount, the puncture needle 21 is pulled out and the puncture point is pressed to stop the bleeding; then the blood collection tube is taken out, the blood sample is sent to the laboratory for testing, and the shell 1 is disinfected. After replacing it with a new blood collection tube, it can be used again.

[0049] Example 2

[0050] The difference between this embodiment and Embodiment 1 is that, as Figure 6 As shown, the blood collection needle also includes a flexible tube 23. One end of the flexible tube 23 is connected to the bottom of the syringe 22, and the other end is connected to the puncture needle 21. During use, the syringe 22 is tightened in the fixed cavity 11, the puncture needle 21 is fixed in the clamping channel 31 of the slide 3, and the flexible tube 23 is located in the sliding cavity 12, which provides a certain extension space for the flexible tube 23. When the puncture needle 21 moves downward to puncture, the flexible tube 23 is gradually straightened, and the blood sample passes through the puncture needle 21 and the flexible tube 23 in sequence before entering the syringe 22 for storage.

[0051] Example 3

[0052] The difference between this embodiment and Embodiment 2 is that, as Figure 7As shown, the bottom of the slide block 3 is also provided with a clamping assembly extending out of the sliding cavity 12. The clamping assembly includes a rubber sleeve 71 and an elastic clamp 72 for squeezing the rubber sleeve 71. The rubber sleeve 71 is fixed to the bottom of the slide block 3. In use, the puncture needle 21 passes through the rubber sleeve 71. Then, the elastic clamp 72 is put on the rubber sleeve 71. The elastic clamp 72 squeezes the rubber sleeve 71, thereby making the rubber sleeve 71 more firmly fix the puncture needle 21, ensuring that the puncture needle 21 is fixedly connected to the slide block 3. A part of the hose 23 can be located in the clamping channel 31, and another part is located in the extension space of the sliding cavity 12. When the slide block 3 moves downward, the part of the hose 23 located in the extension space is straightened.

[0053] Example 4

[0054] The difference between this embodiment and Embodiment 3 is that, as Figure 8 As shown, both the housing 1 and the slide 3 are two-part structures. Taking the housing 1 as an example, the housing 1 includes a first housing 111 and a second housing 112 that are semi-circular arcs. A torsion spring (not shown in the figure) is provided on one side of the first housing 111 and the second housing 112, and a buckle 1121 and a slot are provided on the other side, respectively. In use, the first housing 111 and the second housing 112 are opened apart, the blood collection needle is placed on either housing 1, and then the other housing 1 is closed and fixed by the buckle 1121 and the slot. Since the torsion spring is provided on one side of the two housings 1, the two housings 1 are further tightened under the force of the torsion spring, thereby fixing the blood collection needle on the housing 1. After blood collection is completed, the first housing 111 and the second housing 112 are opened apart again. Through the above-mentioned handling method, the contamination of the housing 1 can be avoided when removing the puncture needle 21, reducing the difficulty of subsequent disinfection.

[0055] Example 5

[0056] The difference between this embodiment and Embodiment 1 is that, as Figure 9 As shown, the housing 1 is also equipped with a controller (not shown in the figure) and a display screen 8. The display screen 8 and the detector 6 are both electrically connected to the controller. The detector 6 transmits the detected signal to the controller. After processing by the controller, the position or depth of the blood vessel is displayed on the display screen 8.

[0057] Example 6

[0058] The difference between this embodiment and Embodiment 1 is that, as Figure 10As shown, it also includes a fixation support 9 for fixing the arm. The fixation support 9 is provided with an arc-shaped groove 91, and a soft pad is provided inside the arc-shaped groove 91. When in use, the patient's arm is placed in the arc-shaped groove 91 to limit and fix the arm. A support support 92 can also be provided on the arc-shaped groove 91. The support support 92 is provided with an opening 921 for the housing 1 to pass through. After the blood collection needle is installed, the housing 1 is fixed in the opening 921 of the support support 92. Specifically, the outer wall of the housing 1 is provided with external threads, and the inner wall of the opening 921 is provided with internal threads. The housing 1 is fixed on the support support 92 through the threaded connection, which facilitates the support and positioning of the housing 1.

[0059] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An automatic arterial and venous blood extraction device capable of measuring blood glucose, characterized in that: The device includes a housing and a detachable blood collection needle tube housed within the housing. The blood collection needle tube includes a puncture needle and a syringe, with the puncture needle and syringe slidably sealed together. The housing contains a sliding assembly for clamping the puncture needle and a actuating assembly for driving the sliding assembly. The sliding assembly includes a slide block with a through clamping channel. The actuating assembly is positioned beside the slide block for pushing it to move. The actuating assembly includes an actuating gear with graduations on it and a marking for indicating puncture points. The housing has markings indicating the needle insertion depth. From top to bottom, the housing has a fixed cavity and a sliding cavity that communicate with each other. A slide block is slidably positioned within the sliding cavity. The syringe barrel of the blood collection needle extends from one end of the housing into the fixed cavity, and the puncture needle passes through the clamping channel of the slide block. The housing also has a mounting cavity, one side of which communicates with the sliding cavity, and the other side communicates with the outside. A gear is positioned within the mounting cavity and partially extends outwards. The slide block has a gear meshing with the gear on the side near the gear. Rotating the gear... The wheel drives the slide to move up and down within the sliding cavity. A limiting bracket is also provided at the bottom of the housing, with a detector for detecting blood vessels mounted on it. The detector has a through hole for the puncture needle to pass through. An adjustment mechanism for adjusting the height of the detector is also provided within the housing. The adjustment mechanism includes an intermediate gear and a first and second adjusting rack meshing with the intermediate gear. An adjustment cavity is provided within the housing, with the intermediate gear rotatably mounted within it. The first adjusting rack is slidably mounted on the inner wall of the adjustment cavity, and the second adjusting rack is mounted on the side wall of the slide. The detector is fixed to the first adjusting rack via a connecting rod, one end of which passes through the housing and is slidably connected to it. When the gear rotates, causing the slide to slide downwards, the second adjusting rack drives the intermediate gear to rotate clockwise, thereby causing the first adjusting rack to move upwards. The first adjusting rack then moves the connecting rod upwards, thus causing the detector to move upwards. A clamping assembly extending out of the sliding cavity is also provided at the bottom of the slide. The clamping assembly includes a rubber sleeve and an elastic clamp for squeezing the rubber sleeve, through which the puncture needle passes.

2. The automatic arterial and venous blood extraction device for measuring blood glucose according to claim 1, characterized in that: An elastic pad is also provided on the inner wall of the clamping channel.

3. The automatic arterial and venous blood extraction device for measuring blood glucose according to claim 2, characterized in that: The blood collection needle also includes a flexible tube, one end of which is connected to the bottom of the syringe, and the other end is connected to the puncture needle.

4. The automatic arterial and venous blood extraction device for measuring blood glucose according to claim 3, characterized in that: It also includes a fixing bracket for securing the arm, which has an arc-shaped groove with a soft pad inside.

5. The automatic arterial and venous blood extraction device for measuring blood glucose according to claim 1, characterized in that: The syringe also contains a blood glucose test strip.

6. The automatic arterial and venous blood extraction device for measuring blood glucose according to claim 1, characterized in that: The detector is an infrared temperature sensor.

7. The automatic arterial and venous blood extraction device for measuring blood glucose according to claim 1, characterized in that: The housing is also equipped with a controller and a display screen, both of which are electrically connected to the controller.

Images