A multifunctional venous blood specimen collection auxiliary device

Abstract

The present application relates to a kind of multifunctional venous blood specimen collection auxiliary device, it includes: shell, top and bottom are equipped with opening;Needle holder, it is installed on the shell, the needle holder is equipped with fixed hole, and the fixed hole is used to fix blood taking needle;And test tube holder, it is installed on the inner wall of the shell, and the test tube holder is located below the needle holder, and the test tube holder is used to fix blood culture bottle.By needle holder fixed blood taking needle, by test tube holder fixed blood culture bottle or test tube, can free both hands for medical staff, facilitate examination and adjust blood taking needle, can be tightly fixed together with blood taking needle and blood culture bottle, prevent blood taking needle from automatically exiting blood culture bottle, avoid pollution.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a multifunctional auxiliary device for collecting venous blood samples. Background Technology

[0002] Currently, venous blood sample collection is a common nursing procedure in clinical nursing work. For cancer patients, each time a new patient is admitted, there are many tests to be done, requiring more than a dozen blood collection tubes. When collecting venous blood, nurses may encounter situations such as no blood return in the puncture needle or poor blood flow. In these cases, nurses need to use both hands to check and adjust the puncture needle. In addition, when collecting venous blood for culture, since each blood culture bottle contains 5-10ml of blood, nurses need to secure the puncture needle and the blood culture bottle tightly together to prevent the puncture needle from automatically exiting the blood culture bottle, which causes great inconvenience to medical staff and patients. Summary of the Invention

[0003] This invention provides a multifunctional venous blood sample collection auxiliary device to solve the problems in related technologies where nurses need to free up their hands to check and adjust the blood collection needle, and where the blood collection needle and blood culture bottle need to be tightly fixed together to prevent the blood collection needle from automatically exiting the blood culture bottle.

[0004] In a first aspect, a multifunctional venous blood specimen collection auxiliary device is provided, comprising: a housing having openings at both the top and bottom; a needle holder mounted on the housing, the needle holder having a fixing hole for fixing a blood collection needle; and a test tube holder mounted on the inner wall of the housing, the test tube holder being located below the needle holder for fixing a blood culture bottle.

[0005] In some embodiments, the needle holder includes: a first support including a first long shaft and a first fixed wing connected to each other; a second support including a second long shaft and a second fixed wing connected to each other; the first long shaft and the second long shaft are respectively mounted on opposite sides of the housing, the first fixed wing and the second fixed wing extend toward each other, the ends of the first fixed wing and the second fixed wing that are close to each other form the fixing hole, and the distance between the first fixed wing and the second fixed wing is adjustable.

[0006] In some embodiments, the front end of the first fixed wing is provided with a first curved portion, the front end of the second fixed wing is provided with a second curved portion, the first curved portion and the second curved portion form the fixing hole, and a fixing ring is sleeved on the outer side of the first curved portion and the second curved portion. The inner diameter of the fixing ring is adjustable, so that the distance between the first curved portion and the second curved portion is adjustable.

[0007] In some embodiments, the second fixed wing has a movable hole at one end near the second long axis, through which the second long axis passes. The movable hole can move along the length of the second long axis and adjust the angle between the second fixed wing and the second long axis.

[0008] In some embodiments, the first long shaft is connected to a flow stop clamp via a connecting rod, the flow stop clamp being located above the needle holder and used to clamp the blood collection needle connecting tube.

[0009] In some embodiments, the test tube holder includes: a button mounted on the inner wall of the housing; a fixing rod mounted on the button, the fixing rod being spaced apart from the housing, the end of the fixing rod away from the button being movable toward the housing; and a limiting block disposed at the end of the fixing rod away from the button, the limiting block protruding toward the housing.

[0010] In some embodiments, the cross-sectional dimensions of the limiting block gradually decrease from the end closer to the button to the end farther away from the button.

[0011] In some embodiments, the multifunctional venous blood sample collection auxiliary device further includes a fixing bracket with an inclined surface at the top, and the housing is mounted on the fixing bracket with the axis of the housing parallel to the inclined surface.

[0012] In some embodiments, the top two sides of the fixed bracket are provided with fixed protrusions, and the housing is provided with grooves that match the fixed protrusions. The housing is snapped onto the fixed protrusions through the grooves.

[0013] In some embodiments, a baffle is provided at the lower end of the inclined surface, and the two ends of the baffle are connected to the fixed bracket through foldable baffle wings. The baffle, the baffle wings and the inclined surface form a groove.

[0014] The beneficial effects of the technical solution provided by this invention include:

[0015] This invention provides a multifunctional venous blood sample collection auxiliary device. The blood collection needle is fixed by a needle holder, and the blood culture bottle or test tube is fixed by a test tube holder. This frees up the hands of medical staff, making it easier to check and adjust the blood collection needle. The blood collection needle and the blood culture bottle can be tightly fixed together to prevent the blood collection needle from automatically exiting the blood culture bottle and avoid contamination. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a multifunctional venous blood sample collection auxiliary device provided in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of a fixing bracket for a multifunctional venous blood sample collection auxiliary device provided in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of a test tube holder for a multifunctional venous blood specimen collection auxiliary device provided in an embodiment of the present invention.

[0020] Numbering on the map:

[0021] 1. Housing; 2. Needle holder; 21. Fixing hole; 22. First long axis; 23. First fixing wing; 24. First curved part; 25. Second long axis; 26. Second fixing wing; 27. Second curved part; 28. Movable hole; 29. ​​Fixing ring; 3. Test tube holder; 31. Button; 32. Fixing rod; 33. Limiting block; 4. Fixing bracket; 41. Inclined surface; 42. Fixing protrusion; 43. Baffle; 44. Baffle wing; 45. Venous blood specimen collection sequence diagram; 5. Drain clamp; 6. LED light. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] This invention provides a multifunctional venous blood sample collection auxiliary device, which solves the problems in related technologies where nurses need to free up their hands to check and adjust the blood collection needle, and where the blood collection needle and blood culture bottle need to be tightly fixed together to prevent the blood collection needle from automatically exiting the blood culture bottle.

[0024] See Figure 1As shown, a multifunctional venous blood specimen collection auxiliary device provided by an embodiment of the present invention may include: a housing 1, which has openings at both the top and bottom. The housing 1 is a hollow cylinder with openings at both the top and bottom. A blood collection needle can be inserted and fixed through the top opening of the housing 1, and a blood culture bottle can be inserted and fixed through the bottom opening of the housing 1; a needle holder 2, which is installed on the housing 1. The needle holder 2 has a fixing hole 21 for fixing the blood collection needle. The diameter of the fixing hole 21 is slightly larger than the diameter of the blood collection needle, so that the blood collection needle can be locked in the fixing hole. The center of the fixing hole 21 is preferably located on the axis of the housing 1, so that the blood collection needle is positioned within the housing. The body 1 is positioned at the very center, facilitating the alignment of the blood culture bottle with the blood collection needle; and a test tube holder 3 is installed on the inner wall of the body 1, located below the needle holder 2. The test tube holder 3 is used to secure the blood culture bottle, fixing it below the blood collection needle. After the blood collection needle is inserted into the blood culture bottle, it can tightly fix the blood collection needle and the blood culture bottle together, preventing the blood collection needle from automatically exiting the blood culture bottle. This frees up the hands of medical personnel, making it easier to check and adjust the blood collection needle. It is sturdy, durable, simple in structure, easy to operate, reusable, and inexpensive. It can be used alone or in combination to meet various needs.

[0025] See Figure 1 As shown, the needle holder 2 may further include: a first support, which includes a first long shaft 22 and a first fixed wing 23 connected to each other; a second support, which includes a second long shaft 25 and a second fixed wing 26 connected to each other; the first long shaft 22 and the second long shaft 25 are respectively installed on opposite sides of the housing 1, the first fixed wing 23 and the second fixed wing 26 extend in a direction that approaches each other, and the ends of the first fixed wing 23 and the second fixed wing 26 that approach each other form the fixing hole 21, and the distance between the first fixed wing 23 and the second fixed wing 26 is adjustable.

[0026] In this embodiment, both the first and second supports are L-shaped plates, symmetrically arranged on both sides of the housing 1. The first long axis 22 and the second long axis 25 extend to the top of the housing 1. The first fixed wing 23 and the second fixed wing 26 extend radially along the housing 1 and eventually converge at a point on the axis of the housing 1 to form a fixing hole 21. When the blood collection needle is inserted into the fixing hole 21 and fixed to the blood culture bottle, the amount of blood in the blood culture bottle can be easily viewed during blood collection. The distance between the first fixed wing 23 and the second fixed wing 26 is adjustable, so that the size of the fixing hole 21 can also be adjusted, making it convenient to install and remove the blood collection needle.

[0027] An LED light is provided above the needle holder 2. The connecting rod used to connect the needle holder 2 is telescopic and movable, which makes it convenient for medical staff to check the patient's identity and blood sample collection information, and to assess whether the blood flow of the blood collection needle is unobstructed and whether the blood collection volume is sufficient.

[0028] See Figure 1 As shown, the front end of the first fixed wing 23 may be provided with a first curved portion 24, and the front end of the second fixed wing 26 may be provided with a second curved portion 27. The first curved portion 24 and the second curved portion 27 form the fixing hole 21. A fixing ring 29 is sleeved on the outer side of the first curved portion 24 and the second curved portion 27. The inner diameter of the fixing ring 29 is adjustable, so that the distance between the first curved portion 24 and the second curved portion 27 is adjustable.

[0029] In this embodiment, the first curved portion 24 is formed by bending the front end of the first fixed wing 23 upward, and the second curved portion 27 is formed by bending the front end of the second fixed wing 26 upward. The first curved portion 24 and the second curved portion 27 are recessed in a direction away from each other, forming a roughly cylindrical channel to fix the blood collection needle. The fixing ring 29 is spiral-shaped. Twisting the fixing ring 29 can extend or retract it, thereby changing the distance between the first curved portion 24 and the second curved portion 27, and thus changing the size of the fixing hole 21. The surface of the fixing ring 29 is provided with dot-shaped protrusions to play an anti-slip role. The surface of the fixed wing that contacts the fixing ring 29 is provided with threads. By adjusting the fixing ring 29, the blood collection needle outlet end is fixed, which makes it more convenient to adjust the size of the fixing hole 21.

[0030] In other embodiments, the size of the fixing hole 21 can also be adjusted in other ways, such as by connecting a telescopic structure between the first bent portion 24 and the second bent portion 27, or by snapping the first bent portion 24 and the second bent portion 27 together with a buckle.

[0031] See Figure 1 As shown, in some optional embodiments, the second fixed wing 26 may have a movable hole 28 at one end near the second long axis 25, through which the second long axis 25 passes. The movable hole 28 can move along the length direction of the second long axis 25 and adjust the angle between the second fixed wing 26 and the second long axis 25.

[0032] In this embodiment, the first curved portion 24 and the second curved portion 27 at one end of the second long axis 25 are fixed by a fixing ring 29. The movable hole 28 at the other end of the second long axis 25 can move along the second long axis 25, so that the second long axis 25 changes from a horizontal direction to an inclined direction. When the second long axis 25 is inclined, the blood collection needle can be adjusted from a vertical direction to an inclined direction, so that the tip of the blood collection needle can contact the tube wall and inject blood into the test tube along the tube wall, thus avoiding mechanical hemolysis.

[0033] In other embodiments, the angle of the blood collection needle can also be adjusted in other ways. For example, the direction of the fixing hole 21 can be adjusted by adjusting the fixing ring 29, thereby adjusting the angle of the blood collection needle. Alternatively, the blood collection needle can be manually pushed outward to make it contact the wall of the test tube.

[0034] See Figure 1 As shown, in some embodiments, the first long shaft 22 can be connected to a flow stop clamp 5 via a connecting rod. The flow stop clamp 5 is located above the needle holder 2 and is used to clamp the blood collection needle connecting tube.

[0035] In this embodiment, the front end of the flow-stopping clip 5 has two spheres to prevent injury to patients and medical personnel. The connecting rod of the flow-stopping clip 5 has good rigidity and extensibility and mobility. After blood collection, the blood collection needle connecting tube can be clamped by the flow-stopping clip 5 first, and then the blood collection needle can be pulled out from the blood culture bottle or test tube. The flow-stopping clip 5 can hold the blood collection needle connecting tube and stop blood flow, thereby effectively preventing blood leakage from the front end of the blood collection needle and reducing contamination.

[0036] See Figure 3 As shown, the test tube holder 3 may include: a button 31, which is installed on the inner wall of the housing 1; a fixing rod 32, which is installed on the button 31, the fixing rod 32 being spaced apart from the housing 1, and the end of the fixing rod 32 away from the button 31 being movable toward the housing 1; and a limiting block 33, which is provided at the end of the fixing rod 32 away from the button 31, and the limiting block 33 protruding toward the housing 1.

[0037] In this embodiment, there are two test tube holders 3, which are respectively set on opposite sides of the housing 1. The fixing rod 32 is parallel to the inner wall of the housing 1 and spaced apart. A spring is connected between the fixing rod 32 and the inner wall of the housing 1, so that the fixing rod 32 has a certain elasticity. In use, the test tube or blood culture bottle can be pushed into the inner side of the housing 1 through the lower opening of the housing 1. During the process, the fixing rod 32 and the limiting block 33 need to be pushed outward. After the test tube or blood culture bottle is pushed into the housing 1, the outer wall of the test tube or blood culture bottle can be clamped by the fixing rod 32. The limiting block 33 can limit the test tube or blood culture bottle in the axial direction, so that the test tube or blood culture bottle is fixed on the test tube holder 3 and fixed together with the blood collection needle above it, which facilitates blood collection.

[0038] In other embodiments, test tubes or blood culture bottles can also be fixed by other mechanisms, such as by setting a fixing sleeve inside the housing 1, or by using tape or brackets.

[0039] See Figure 3 As shown, preferably, the cross-sectional dimensions of the limiting block 33 can gradually decrease from the end closer to the button 31 to the end farther away from the button 31.

[0040] In this embodiment, the limiting block 33 is an inverted right triangle. The side of the limiting block 33 has an inclined surface that slopes from top to bottom toward the inner wall of the housing 1. When the test tube or blood culture bottle is pushed between the fixing rods 32, the inclined surface can play a guiding role and facilitate the push-in. The top of the limiting block 33 has a horizontal surface, which can block the bottom of the test tube or blood culture bottle to prevent it from falling and improve safety.

[0041] In other embodiments, the limiting block 33 may also be other shapes, such as square, round, or other irregular shapes.

[0042] See Figure 2 As shown, in some embodiments, the multifunctional venous blood sample collection auxiliary device may further include a fixed bracket 4, the top of which is provided with an inclined surface 41, the housing 1 is mounted on the fixed bracket 4, and the axis of the housing 1 is parallel to the inclined surface 41.

[0043] In related technologies, test tubes or blood culture bottles are usually set horizontally. When checking the blood volume, nurses need to squat down to check if the blood volume is sufficient, which causes great inconvenience to medical staff and patients. In this embodiment, after the test tube and blood collection needle are installed on the needle holder 2 and the test tube holder 3, the housing 1 can be installed on the fixing bracket 4. The fixing bracket 4 has an inclined surface 41, so that the test tube located above the fixing bracket 4 is also set at an angle. Medical staff only need to look at the inclined surface 41 to read the blood volume of the test tube. For example, if 5ml of blood needs to be collected, the scale of the test tube is set on the inclined surface 41 with the medical staff facing it. When the blood in the test tube exceeds the 5ml mark, it means that more than or equal to 5ml of blood has been collected. Therefore, it is no longer necessary to squat down to check the blood volume, reducing the physical discomfort of medical staff, improving work efficiency, and increasing the satisfaction of patients and medical staff.

[0044] See Figure 2 As shown, in some embodiments, the top two sides of the fixed bracket 4 may be provided with fixed protrusions 42, and the housing 1 may be provided with grooves that match the fixed protrusions 42. The housing 1 is snapped onto the fixed protrusions 42 through the grooves.

[0045] In this embodiment, the fixing protrusion 42 is perpendicular to the inclined surface 41, and the opening of the groove faces a direction perpendicular to the axis of the housing 1. A groove is provided on each side of the housing 1. When the housing 1 is installed onto the fixing bracket 4, the fixing protrusion 42 is simply inserted into the groove of the housing 1. A spring sheet can be provided at the upper end of the fixing protrusion 42 to hold the groove in place and prevent the housing 1 from falling off. The bottom surface of the fixing bracket 4 has dotted protrusions to increase friction and prevent the fixing bracket from sliding.

[0046] In other embodiments, the fixing bracket 4 can also fix the housing 1 by other structures, such as by setting a bracket at the bottom of the housing 1 to support the housing 1, or by fixing the housing 1 by straps or Velcro.

[0047] See Figure 2 As shown, in some embodiments, the lower end of the inclined surface 41 is provided with a baffle 43, and the two ends of the baffle 43 are connected to the fixed bracket 4 through foldable baffle wings 44. The baffle 43, the baffle wings 44 and the inclined surface 41 form a groove.

[0048] In this embodiment, the groove formed by the baffle 43, the baffle wing 44 and the inclined surface 41 can catch the shell 1 or the blood culture bottle, preventing the blood culture bottle from slipping and breaking, thus providing safety. When not in use, the baffle wing can be folded onto the inclined surface 41 to reduce space occupation.

[0049] See Figure 2As shown, in some embodiments, the inclined surface 41 is also provided with a venous blood sample collection sequence diagram 45, which is helpful for medical staff to verify the patient's identity and blood sample collection information, check the venous blood sample collection sequence in a timely manner, and reduce the incidence of adverse events.

[0050] When medical personnel collect venous blood samples from patients, after assessing the blood vessels and preparing the necessary equipment, they place the outlet end of the venous blood collection needle between the first fixing wing 23 and the second fixing wing 26, adjust the fixing ring 29 to fix the outlet end of the blood collection needle onto the fixing hole 21, and then pass the blood collection needle connecting tube through the stop clamp 5. If blood culture is being collected, the fixing protrusion 42 and the groove need to be engaged to connect the housing 1 to the fixing bracket 4. When blood reflux occurs after venous puncture, the collection tube is pushed upwards through the bottom end of the housing 1. At this time, the blood collection tube is fixed inside the housing 1 by the tube retainer 3, and the blood collection needle is inserted into the blood collection tube. The blood collection needle connecting tube is pushed away from the stop clamp 5, and then the second fixing wing 26 is pressed downwards. 6. The end near the movable hole 28 allows blood to flow along the tube wall into the blood collection tube. When changing the tube, first push the blood collection needle connecting tube into the stop clamp 5, and then press the buttons 31 on both sides to separate the blood collection needle from the blood collection tube. When collecting venous blood samples, the LED light 6 can be turned on, which helps medical staff to verify the patient's identity and blood sample collection information. At the same time, it can better assess situations such as no blood return in the blood collection needle after puncture or poor blood flow in the blood collection needle. In addition, when collecting venous blood culture samples, medical staff can squat down and pay attention to the scale of the blood culture bottle at all times. They only need to keep their eyes on the inclined surface 41 of the fixed bracket 4, which reduces the physical discomfort of medical staff, improves work efficiency, and increases the satisfaction of patients and medical staff.

[0051] The principle of the multifunctional venous blood sample collection auxiliary device provided in this embodiment of the invention is as follows:

[0052] By securing the blood collection needle tightly to the blood collection tube, contamination caused by the needle automatically retracting is prevented; by adjusting the blood collection needle to inject blood along the tube wall into the test tube, mechanical hemolysis is avoided; the blood volume in the test tube can be read simply by looking at the inclined plane 41, thus improving work efficiency.

[0053] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0054] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0055] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A multifunctional auxiliary device for collecting venous blood samples, characterized in that, It includes: The housing (1) has openings at both the top and bottom; A needle holder (2) is mounted on the housing (1). The needle holder (2) is provided with a fixing hole (21) for fixing the blood collection needle. And a test tube holder (3), which is installed on the inner wall of the housing (1), the test tube holder (3) is located below the needle holder (2), and the test tube holder (3) is used to fix the blood culture bottle; The needle holder (2) includes: The first support includes a first long shaft (22) and a first fixed wing (23) that are interconnected. The second support includes a second long shaft (25) and a second fixed wing (26) that are interconnected. The first long shaft (22) and the second long shaft (25) are respectively installed on opposite sides of the housing (1). The first fixed wing (23) and the second fixed wing (26) extend toward each other. The ends of the first fixed wing (23) and the second fixed wing (26) that are close to each other form the fixing hole (21). The distance between the first fixed wing (23) and the second fixed wing (26) is adjustable. The first fixed wing (23) has a first curved part (24) at its front end, and the second fixed wing (26) has a second curved part (27) at its front end. The first curved part (24) and the second curved part (27) form the fixing hole (21). A fixing ring (29) is sleeved on the outer side of the first curved part (24) and the second curved part (27). The inner diameter of the fixing ring (29) is adjustable, so that the distance between the first curved part (24) and the second curved part (27) is adjustable. The second fixed wing (26) has a movable hole (28) at one end near the second long axis (25). The second long axis (25) passes through the movable hole (28). The movable hole (28) can move along the length direction of the second long axis (25) and adjust the angle between the second fixed wing (26) and the second long axis (25). The test tube fixator (3) includes: Button (31), which is mounted on the inner wall of the housing (1); A fixing rod (32) is mounted on the button (31). The fixing rod (32) is spaced apart from the housing (1). The end of the fixing rod (32) away from the button (31) can move towards the housing (1). A limiting block (33) is provided at one end of the fixing rod (32) away from the button (31), and the limiting block (33) protrudes in a direction away from the housing (1).

2. The multifunctional venous blood specimen collection auxiliary device as described in claim 1, characterized in that: The first long shaft (22) is connected to a flow stop clamp (5) via a connecting rod. The flow stop clamp (5) is located above the needle holder (2) and is used to clamp the blood collection needle connecting tube.

3. The multifunctional venous blood specimen collection auxiliary device as described in claim 1, characterized in that: The cross-sectional dimensions of the limiting block (33) gradually decrease from the end closer to the button (31) to the end farther away from the button (31).

4. The multifunctional venous blood specimen collection auxiliary device as described in claim 1, characterized in that: The multifunctional venous blood specimen collection auxiliary device also includes a fixed bracket (4), the top of which is provided with an inclined surface (41), and the housing (1) is installed on the fixed bracket (4), with the axis of the housing (1) parallel to the inclined surface (41).

5. The multifunctional venous blood specimen collection auxiliary device as described in claim 4, characterized in that: The top two sides of the fixed bracket (4) are provided with fixed protrusions (42), and the housing (1) is provided with grooves that match the fixed protrusions (42). The housing (1) is snapped onto the fixed protrusions (42) through the grooves.

6. The multifunctional venous blood specimen collection auxiliary device as described in claim 4, characterized in that: The lower end of the inclined surface (41) is provided with a baffle (43), and the two ends of the baffle (43) are connected to the fixed bracket (4) through foldable baffle wings (44). The baffle (43), the baffle wings (44) and the inclined surface (41) form a groove.

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