An auxiliary device for peripheral arterial blood sampling in newborns

By designing an auxiliary device that uses sector gears and telescopic components, the problem of poor arm fixation during blood collection in the neonatal peripheral artery is solved, precise adjustment of arm position and skin stretching are achieved, and the accuracy and convenience of blood collection are improved.

CN119745382AInactive Publication Date: 2025-04-04JIAXING MATERNAL & CHILD HEALTH HOSPITAL
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Patent Information

Application Number
CN202411878866.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-19
Publication Date
2025-04-04
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing auxiliary devices for blood collection of peripheral arteries in neonatal cannot effectively fix the newborn's arms, causing the arms to move and twist during blood collection, increasing the technical difficulty and cost of medical staff.

Method used

An auxiliary device is designed to drive the connecting rod to synchronously by the telescopic assembly to achieve precise adjustment of the arm position, and combine the pinch assembly to lift the wrist, stretch the skin, and fix the blood vessels.

Benefits of technology

This device can stabilize and fix the arms of the newborn, reduce arm movement during blood collection, improve the accuracy of puncture, reduce costs, and is suitable for large-scale popularization.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses an auxiliary device for neonatal peripheral arterial blood sampling in the field of medical devices, comprising a fixing plate with a groove, a plurality of through holes symmetrically formed on both side walls of the fixing plate, fixing rods slidingly fitted in the through holes, connecting rods arranged obliquely arranged on both sides of the fixing plate, the connecting rods sequentially passing through the fixing rods located on one side thereof, oblong holes provided on the fixing rods, a plurality of sliding shafts provided on the connecting rods, the sliding shafts all being slidably connected with the oblong holes; a sector gear fixedly connected to one end of the connecting rod close to the fixing plate, the sector gears all being located in the groove of the fixing plate and all being hinged to the side wall of the fixing plate, the adjacent sector gears meshing with each other; a telescopic assembly for driving the connecting rod to move toward the fixing plate is provided on the connecting rod. The present invention drives the connecting rods on both sides to move synchronously by the telescopic assembly through the mutual meshing between the sector gears, thereby accurately adjusting the position of the fixed arm of the neonate.
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Description

Technical Field

[0001] The invention belongs to the field of medical instruments, and in particular is an auxiliary device for peripheral arterial blood sampling of neonates. Background Art

[0002] Newborns belong to a special group. Their physical development and health status are the most concerned issues for their families. Therefore, early screening for various diseases is necessary for newborns to detect potential diseases in a timely manner and provide corresponding treatment. Neonatal peripheral arterial blood sampling can meet the needs of different clinical examinations, including but not limited to blood routine, electrolyte determination, liver function test, kidney function test and thyroid function test. These examinations are of great significance for evaluating the health status of newborns and detecting potential diseases in a timely manner.

[0003] When sampling blood from a newborn's peripheral artery, the blood sampling process requires high technical skills from medical staff, and it is necessary to avoid damaging the newborn, because the newborn's blood vessels are thin and the skin is tender. In response to this challenge, there are some auxiliary devices to help medical staff improve the success rate of blood sampling and reduce the discomfort of the newborn. This type of auxiliary device mainly relies on simple fixing belts or clamps to fix the newborn's arms or feet. Although this type of device has a certain auxiliary fixing effect, it cannot stretch the skin of the newborn's arm. If these functions need to be realized, additional control devices and sensors are often required, which greatly increases the cost of the device.

[0004] In summary, it is necessary to propose an auxiliary device to improve the convenience of peripheral arterial blood sampling in neonates. Summary of the invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide an auxiliary device for peripheral arterial blood sampling in neonates. Through the mutual engagement between the sector gears, the telescopic assembly drives the connecting rods on both sides to move synchronously, thereby accurately adjusting the position of the fixed arm of the neonate. Only one driving component is required to realize the operation of the device, and the cost is low, which is suitable for large-scale popularization.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: an auxiliary device for peripheral arterial blood sampling in neonates, comprising a fixed plate with a groove, a plurality of through holes symmetrically opened on both side walls of the fixed plate, fixed rods slidably fitted in the through holes, inclined connecting rods are provided on both sides of the fixed plate, the connecting rods pass through the fixed rods on one side in sequence, oblong holes are provided on the fixed rods, a plurality of sliding shafts are provided on the connecting rods, and the sliding shafts are slidably connected to the oblong holes; a sector gear is fixedly connected to one end of the connecting rod close to the fixed plate, the sector gears are located in the groove of the fixed plate and are hinged to the side wall of the fixed plate, and adjacent sector gears are meshed with each other; a telescopic component for driving the connecting rod to move toward the fixed plate is provided on the connecting rod; a pushing component for pushing the arm is provided on the fixed rod close to the telescopic component.

[0007] The following principles and beneficial effects are achieved by adopting the above scheme:

[0008] Basic principle: By placing the newborn's arm in the groove of the fixing plate, because both sides of the fixing plate are slidably matched with symmetrical fixing rods, and both sides of the fixing rods are penetrated by connecting rods, when the connecting rods on both sides move toward the fixing plate, the fixing rods can move toward the fixing plate accordingly. And because the connecting rods on both sides of the fixing plate are hinged with fan-shaped gears, and the adjacent fan-shaped gears are meshed with each other, the movements of the connecting rods on both sides can be kept corresponding to each other, and then the effect of extending the connecting rods on both sides to the outside of the fixing plate and contracting inward can be achieved through the telescopic assembly. When contracting inward, the fixing rods on both sides are close to each other, which can produce a fixing effect on the arm. After the arm is fixed, the wrist is lifted up by the jacking assembly; in this process, the fixing rods on both sides are in contact with the skin, so that the jacking assembly stretches the skin of the arm when it moves upward; when the skin is stretched, the artery is easier to observe, and the movement of the blood vessels can be reduced, and the accuracy of puncture is improved, thereby assisting medical staff to better complete the blood collection work.

[0009] Beneficial effects: 1. The present invention can stably fix the arm of a newborn through the cooperation of the fixing plate and the fixing rod, reducing its movement and twisting during the blood collection process. By adjusting the position of the fixing rod, the device can adapt to babies of different sizes, improving the versatility of the device.

[0010] 2. The present invention can lift the wrist of the newborn to a certain height through the design of the lifting component, so that the arm skin can be stretched. When the skin is stretched, the artery is easier to observe, and the movement of the blood vessels can be reduced, thereby improving the accuracy of puncture. On the one hand, it provides a good field of vision for medical staff; on the other hand, it can free the hands of medical staff to perform other operations, thereby better performing blood collection work and improving the practicality and convenience of the device.

[0011] 3. The present invention has a simple structure. Through the mutual meshing of the sector gears, the telescopic assembly drives the connecting rods on both sides to move synchronously, thereby more accurately adjusting the position of the arm. Only one driving component is required to realize the operation of the device. The cost is low and it is suitable for large-scale popularization.

[0012] Furthermore, the telescopic assembly includes a hydraulic rod, which is electrically connected to a controller; both ends of the hydraulic rod are hinged to their adjacent connecting rods; both side walls of the fixed plate are provided with sliding grooves for the movement of the hydraulic rod, and the hydraulic rods slide in cooperation with the sliding grooves; the hydraulic rod extends from the groove of the fixed plate to the outside of the fixed plate through the sliding grooves.

[0013] Beneficial effects: As the core component of the telescopic assembly, the hydraulic rod realizes telescopic movement through the hydraulic principle. When the controller issues a command, the hydraulic oil in the hydraulic rod will flow under pressure, thereby pushing the hydraulic rod to extend or shorten. The combination of the precise telescopic effect of the hydraulic rod and the guiding effect of the chute makes the entire device more accurate and stable when adjusting the position of the newborn's arm. This helps medical staff find the blood collection point more accurately and improves the success rate of blood collection.

[0014] Furthermore, the pushing assembly includes a pushing rod, and a sliding groove for the pushing rod to slide is opened at the bottom of the fixed plate; a first connecting rod is fixedly connected to the bottom wall of one of the fixed rods close to the hydraulic rod, and a second connecting rod is fixedly connected to the end of the first connecting rod away from the fixed rod, and an end of the second connecting rod away from the first connecting rod passes through the sliding groove and slides in cooperation with the sliding groove; the contact surfaces between the second connecting rod and the pushing rod are both inclined surfaces.

[0015] Beneficial effect: Because the fixed rod is fixedly connected with the first connecting rod, the first connecting rod is fixedly connected with the second connecting rod, and the second connecting rod passes through the sliding groove and slides with the sliding groove, when the fixed rod moves toward the groove of the fixed plate, it can drive the second connecting rod to move into the sliding groove. Because the contact surfaces of the second connecting rod and the top rod are both inclined surfaces, and the top rod is located in the sliding groove and slides with each other, when the second connecting rod moves toward the sliding groove, the inclined surfaces of the second connecting rod and the top rod can realize the upward movement of the top rod in the sliding groove. The upward movement of the top rod is realized by this transmission without the need for additional driving force, further reducing the production cost of the device.

[0016] Furthermore, one end of the fixing rod away from the connecting rod is fixedly connected with a buffer layer, and the material of the buffer layer is selected from one or more of rubber, silicone, polyurethane and soft foam.

[0017] Benefits: The cushioning layer reduces the pressure of the fixing bar on the baby's skin, reducing discomfort. This soft material fits better on the baby's skin and provides comfortable support.

[0018] Furthermore, the buffer layers above the top rods are all equipped with springs, and one end of the spring away from the buffer layer is fixedly connected to the fixing rod.

[0019] Beneficial effect: When the push rod moves upward, the design of adding a spring allows the buffer layer to contact the skin surface first and provide support for the arm; so that when the push rod moves upward, the skin of the arm can be clamped and stretched, which can further stretch the skin of the arm, thereby improving the blood collection efficiency of medical staff.

[0020] Furthermore, a fixing belt is fixedly connected in the groove of the fixing plate, and the fixing belt is located on the side of the hydraulic rod close to the fixing rod.

[0021] Beneficial effect: Through the design of the fixing belt, the position of the newborn's hand is fixed here, so that the push rod is located at the wrist position, which prevents the push rod from falling off from the groove of the fixing plate when the arm is pushed, thereby increasing the stability of the device fixation.

[0022] Furthermore, the symmetrical installation spacing of the fixing rods on the side far from the fixing belt is greater than the symmetrical installation spacing of the fixing rods on the side close to the fixing belt.

[0023] Beneficial effect: By gradually increasing the installation spacing, the fixing rod can better fit the human body curve, reduce its oppressive feeling, and further improve the comfort of the device.

[0024] Furthermore, a recycling box for storing medical waste is detachably connected to the bottom of the fixed plate.

[0025] Beneficial effects: Through the design of the recycling box, disinfection items and other wastes used in blood collection can be stored, providing a clean and tidy operating area for the blood collection area, thereby maintaining the hygiene of the operating area. By disassembling the recycling box and centrally processing the waste, the safety of the device is further improved.

[0026] Furthermore, a plurality of partitions are fixedly connected to the inner wall of the recovery box.

[0027] Beneficial effects: By dividing the recycling bin into several areas through partitions, different types of waste can be stored separately, reducing the risk of cross infection, helping to protect the safety of medical staff and patients and reducing the spread of infection within the hospital.

[0028] Furthermore, a lighting lamp is fixedly connected to the top of the recycling box, and the controller is used to control the operation of the lighting lamp.

[0029] Beneficial effects: The design of the lighting lamp enables medical staff to make adjustments based on actual lighting conditions, helping them to more clearly observe the skin, blood vessels and other details of the newborn, thereby more accurately locating the puncture point and reducing puncture failures or repeated punctures due to unclear vision. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1This is an axonometric diagram of an auxiliary device for peripheral arterial blood sampling in neonates according to an embodiment of the present invention.

[0031] Figure 2 The figure is a top cross-sectional view of a fixing plate in an auxiliary device for peripheral arterial blood sampling in neonates according to an embodiment of the present invention.

[0032] Figure 3 It is a front cross-sectional view of a push assembly in an auxiliary device for peripheral arterial blood sampling in neonates according to an embodiment of the present invention.

[0033] The figure marks in the drawings of the specification include: 1. fixed plate; 2. fixed rod; 3. connecting rod; 4. sector gear; 5. hydraulic rod; 6. push rod; 7. first connecting rod; 8. second connecting rod; 9. buffer layer; 10. spring; 11. fixing belt; 12. recovery box; 13. partition; 14. lighting lamp. DETAILED DESCRIPTION

[0034] The following is further described in detail through specific implementation methods:

[0035] Embodiment 1:

[0036] Basically as attached Figure 1-Figure 3 As shown:

[0037] An auxiliary device for peripheral arterial blood sampling in neonates comprises a fixing plate 1 with a groove, and both side walls of the fixing plate 1 are symmetrically provided with a plurality of through holes, and fixing rods 2 are slidably fitted in the through holes, and both sides of the fixing plate 1 are provided with obliquely arranged connecting rods 3, and the connecting rods 3 sequentially penetrate the fixing rods 2 located on one side thereof, and the fixing rods 2 are provided with oblong holes, and the connecting rods 3 are provided with a plurality of sliding shafts, and the sliding shafts are slidably connected with the oblong holes; one end of the connecting rods 3 close to the fixing plate 1 is bolted and fixedly connected with a sector gear 4, and the sector gears 4 are all located in the groove of the fixing plate 1 and are hinged to the side walls of the fixing plate 1, and adjacent sector gears 4 are meshed with each other; and a telescopic component for driving the connecting rod 3 to move toward the fixing plate 1 is provided on the connecting rod 3.

[0038] The telescopic assembly includes a hydraulic rod 5, which is electrically connected to a controller; both ends of the hydraulic rod 5 are hinged to the adjacent connecting rod 3; both side walls of the fixed plate 1 are provided with slide grooves for the movement of the hydraulic rod 5, and the hydraulic rod 5 slides with the slide grooves; the hydraulic rod 5 extends from the groove of the fixed plate 1 to the outside of the fixed plate 1 through the slide grooves. The hydraulic rod 5 realizes telescopic movement through the hydraulic principle. When the controller issues an instruction, the hydraulic oil in the hydraulic rod 5 will flow under pressure, thereby pushing the hydraulic rod 5 to extend or shorten. The combination of the precise telescopic effect of the hydraulic rod 5 and the guiding effect of the slide groove makes the entire device more accurate and stable when adjusting the position of the newborn's arm. This helps medical staff to find the blood collection point more accurately and improve the success rate of blood collection.

[0039] A fixing belt 11 is bolted and fixed in the groove of the fixing plate 1. The fixing belt 11 is located on the side of the hydraulic rod 5 close to the fixing rod 2. A jacking assembly for jacking the arm is provided on the fixing rod 2 close to the hydraulic rod 5. The jacking assembly includes a jacking rod 6. A sliding groove for sliding the jacking rod 6 is provided at the bottom of the fixing plate 1. A first connecting rod 7 is bolted and fixed to the bottom wall of one of the fixing rods 2 close to the hydraulic rod 5. A second connecting rod 8 is bolted and fixed to the end of the first connecting rod 7 away from the fixing rod 2. The end of the second connecting rod 8 away from the first connecting rod 7 passes through the sliding groove and slides with the sliding groove. The contact surfaces of the second connecting rod 8 and the jacking rod 6 are both inclined surfaces.

[0040] Because the fixing rod 2 is bolted to the first connecting rod 7, the first connecting rod 7 is bolted to the second connecting rod 8, and the second connecting rod 8 passes through the sliding groove and slides with the sliding groove, when the fixing rod 2 moves toward the groove of the fixing plate 1, it can drive the second connecting rod 8 to move into the sliding groove. Because the contact surfaces of the second connecting rod 8 and the top rod 6 are both inclined surfaces, and the top rod 6 slides in the sliding groove, when the second connecting rod 8 moves toward the sliding groove, the inclined surfaces of the second connecting rod 8 and the top rod 6 can realize the upward movement of the top rod 6 in the sliding groove. Figure 3 For example, when the left fixed rod 2 moves into the fixed plate 1, the first connecting rod 7 drives the second connecting rod 8 to move to the right. During the movement, the top rod 6 can be gradually moved upward by the inclined surface of the second connecting rod 8. This transmission realizes the movement process of the top rod 6 moving upward without additional driving force, further reducing the production cost of the device.

[0041] Specific implementation process: First, place the newborn's arm in the groove of the fixed plate 1, and fix the newborn's hand position at the fixing belt 11 in the groove, so that the newborn's wrist is located at the contact position of the push rod 6, to prevent the push rod 6 from falling off from the groove of the fixed plate 1 when the arm is pushed, thereby increasing the stability of the device fixation. Because the two side walls of the fixed plate 1 are slidably matched with symmetrical fixing rods 2, and the fixing rods 2 on both sides are penetrated by connecting rods 3, when the connecting rods 3 on both sides move relative to each other in the fixed plate 1, the fixing rods 2 can be realized to move relative to the fixed plate 1. And because the connecting rods 3 on both sides of the fixed plate 1 are hinged with fan gears 4, and the adjacent fan gears 4 are meshed with each other, the movements of the connecting rods 3 on both sides can be kept corresponding to each other.

[0042] The present invention can achieve the effect of extending the connecting rods 3 on both sides to the outside of the fixing plate 1 and contracting inwards through the hydraulic rod 5. When contracting inwards, the fixing rods 2 on both sides are close to each other to produce a fixing effect on the arm. After the arm is fixed, the wrist is lifted up by the push rod 6. In this process, the fixing rods 2 on both sides are in contact with the skin, so that the push rod 6 stretches the arm skin when moving upward. When the skin is stretched, the artery is easier to observe, and the movement of the blood vessels can be reduced, thereby improving the accuracy of puncture. On the one hand, it provides a good field of vision for medical staff; on the other hand, it allows medical staff to free their hands to perform other operations, thereby achieving better blood collection work and improving the practicality and convenience of the device.

[0043] The present invention has a simple structure. Through the mutual meshing between the sector gears 4, the hydraulic rod 5 drives the connecting rods 3 on both sides to move synchronously, so as to more accurately adjust the position of the arm. Only one driving component is needed to realize the operation of the device. The cost is low and it is suitable for large-scale popularization.

[0044] Embodiment 2:

[0045] Basically as attached Figure 1-Figure 3 As shown:

[0046] The difference from the above embodiment is that a buffer layer 9 is fixedly bonded to one end of the fixing rod 2 away from the connecting rod 3, and the material of the buffer layer 9 is selected from one or more of rubber, silicone, polyurethane and soft foam.

[0047] Specific implementation process: The buffer layer 9 can reduce the pressure of the fixing rod 2 on the baby's skin and reduce discomfort. This soft material can better fit the baby's skin and provide comfortable support.

[0048] Embodiment 3:

[0049] Basically as attached Figure 1-Figure 3 As shown:

[0050] The difference from the above embodiment is that the buffer layer 9 located above the top rod 6 is installed with a spring 10 , and one end of the spring 10 away from the buffer layer 9 is fixedly bonded to the fixing rod 2 .

[0051] Specific implementation process: when the push rod 6 moves upward, the design of adding the spring 10 allows the buffer layer 9 to contact the skin surface first and provide support for the arm; so that when the push rod 6 moves upward, the skin of the arm can be clamped and stretched, and the skin of the arm can be further stretched, thereby improving the blood collection efficiency of medical staff.

[0052] Embodiment 4:

[0053] Basically as attached Figure 1-Figure 3 As shown:

[0054] The difference from the above embodiment is that the symmetrical installation spacing of the fixing rods 2 on the side far from the fixing belt 11 is greater than the symmetrical installation spacing of the fixing rods 2 on the side close to the fixing belt 11 .

[0055] Specific implementation process: by gradually increasing the installation spacing of the fixing rods 2, the fixing rods 2 can better fit the human body curve, reduce the sense of oppression, and further improve the comfort of the device.

[0056] Embodiment 5:

[0057] Basically as attached Figure 1 As shown:

[0058] The difference from the above embodiment is that a recycling box 12 for storing medical waste is detachably connected to the bottom of the fixing plate 1 .

[0059] Specific implementation process: Through the design of the recycling box 12, the disinfection items and other wastes used in blood collection can be stored, providing a clean and tidy operating area for the blood collection area, thereby maintaining the hygiene of the operating area. By disassembling the recycling box 12 and centrally processing the waste, the safety of the device is further improved.

[0060] Embodiment 6:

[0061] Basically as attached Figure 1 As shown:

[0062] The difference from the above embodiment is that a plurality of partitions 13 are fixedly connected with bolts on the inner wall of the recovery box 12 .

[0063] Specific implementation process: The recycling box 12 is divided into several areas by the partition 13, which can classify and store different types of waste, reduce the risk of cross infection, help protect the safety of medical staff and patients, and reduce the spread of infection in the hospital.

[0064] Embodiment 7:

[0065] Basically as attached Figure 1 As shown:

[0066] The difference from the above embodiment is that a lighting lamp 14 is fixedly connected with bolts on the top of the recovery box 12 , and the controller is used to control the operation of the lighting lamp 14 .

[0067] Specific implementation process: Through the design of the lighting lamp 14, medical staff can make adjustments according to the actual lighting conditions, which helps medical staff to observe the skin, blood vessels and other details of the newborn more clearly, so as to locate the puncture point more accurately and reduce the puncture failure or repeated puncture due to unclear vision.

[0068] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An auxiliary device for peripheral arterial blood sampling in neonates, characterized in that: The invention comprises a fixing plate (1) with a groove, wherein both side walls of the fixing plate (1) are symmetrically provided with a plurality of through holes, and fixing rods (2) are slidably fitted in the through holes, and both sides of the fixing plate (1) are provided with connecting rods (3) arranged obliquely, and the connecting rods (3) sequentially penetrate the fixing rods (2) located on one side thereof, and the fixing rods (2) are provided with oblong holes, and the connecting rods (3) are provided with a plurality of sliding shafts, and the sliding shafts are slidably connected with the oblong holes; a sector gear (4) is fixedly connected to one end of the connecting rod (3) close to the fixing plate (1), and the sector gears (4) are located in the groove of the fixing plate (1) and are hinged to the side wall of the fixing plate (1), and adjacent sector gears (4) are meshed with each other; a telescopic component for driving the connecting rod (3) to move in the direction of the fixing plate (1) is provided on the connecting rod (3); and a pushing component for pushing the arm is provided on the fixing rod (2) close to the telescopic component.

2. The auxiliary device for neonatal peripheral arterial blood sampling according to claim 1, characterized in that: The telescopic assembly comprises a hydraulic rod (5), the hydraulic rod (5) being electrically connected to a controller; both ends of the hydraulic rod (5) are hingedly connected to the adjacent connecting rods (3); both side walls of the fixed plate (1) are provided with sliding grooves for the hydraulic rod (5) to move, and the hydraulic rod (5) is slidably matched with the sliding grooves; the hydraulic rod (5) extends from the groove of the fixed plate (1) to the outside of the fixed plate (1) through the sliding grooves.

3. The auxiliary device for neonatal peripheral arterial blood sampling according to claim 2, characterized in that: The push assembly comprises a push rod (6); a sliding groove for the push rod (6) to slide is formed at the bottom of the fixed plate (1); a first connecting rod (7) is fixedly connected to the bottom wall of one of the fixed rods (2) close to the hydraulic rod (5); an end of the first connecting rod (7) away from the fixed rod (2) is fixedly connected to a second connecting rod (8); an end of the second connecting rod (8) away from the first connecting rod (7) passes through the sliding groove and slides in cooperation with the sliding groove; the contact surfaces of the second connecting rod (8) and the push rod (6) are both inclined surfaces.

4. The auxiliary device for neonatal peripheral arterial blood sampling according to claim 3, characterized in that: One end of the fixing rod (2) away from the connecting rod (3) is fixedly connected with a buffer layer (9), and the material of the buffer layer (9) is selected from one or more of rubber, silica gel, polyurethane and soft foam.

5. The auxiliary device for neonatal peripheral arterial blood sampling according to claim 4, characterized in that: The buffer layer (9) located above the top rod (6) is equipped with a spring (10), and one end of the spring (10) away from the buffer layer (9) is fixedly connected to the fixing rod (2).

6. The auxiliary device for neonatal peripheral arterial blood sampling according to claim 5, characterized in that: A fixing belt (11) is fixedly connected in the groove of the fixing plate (1), and the fixing belt (11) is located on the side of the hydraulic rod (5) close to the fixing rod (2).

7. The auxiliary device for neonatal peripheral arterial blood sampling according to claim 6, characterized in that: The symmetrical installation spacing of the fixing rods (2) on the side away from the fixing belt (11) is greater than the symmetrical installation spacing of the fixing rods (2) on the side close to the fixing belt (11).

8. The auxiliary device for neonatal peripheral arterial blood sampling according to claim 7, characterized in that: A recycling box (12) for storing medical waste is detachably connected to the bottom of the fixed plate (1).

9. The auxiliary device for neonatal peripheral arterial blood sampling according to claim 8, characterized in that: A plurality of partitions (13) are fixedly connected to the inner side wall of the recovery box (12).

10. The auxiliary device for neonatal peripheral arterial blood sampling according to claim 9, characterized in that: A lighting lamp (14) is fixedly connected to the top of the recycling box (12), and the controller is used to control the operation of the lighting lamp (14).