Far-end radial artery puncture auxiliary device and operation method thereof

Abstract

The invention relates to the field of medical auxiliary supplies, in particular to a far-end radial artery puncture auxiliary device which comprises a connecting block and an arm support arranged on the connecting block, a direction adjusting assembly is arranged in the arm support, a wrist support is rotatably connected to the direction adjusting assembly, an angle adjusting assembly is arranged in the wrist support, and the angle adjusting assembly is rotatably connected to the wrist support. A hand support is fixedly connected to the angle adjusting assembly, the wrist support and the hand support are both located above the connecting block, and restraint straps are arranged on the wrist support and the hand support. Adjustment of the radial artery puncture angle is achieved through the angle adjusting assembly, so that the hand is in the optimal puncture posture, the radial artery puncture part is located above and fully exposed through adjustment of the direction adjusting assembly, stable support is provided for the hand, puncture is facilitated, and the puncture success rate is increased; the technical problem that in the prior art, in the puncture process, adjustment of the puncture position and hand restraint cannot be achieved at the same time is solved.

Description

Technical Field

[0001] The invention relates to the field of medical auxiliary products, and in particular to a distal radial artery puncture auxiliary device and an operating method thereof. Background Art

[0002] Distal radial artery puncture technology is a new interventional surgical puncture technology developed in recent years. It is a new interventional approach and an effective supplement to conventional approaches. Clinical practice in recent years has shown that this technology is more operable and safer than traditional radial artery puncture in certain situations (including but not limited to: when conventional radial artery puncture fails (spasm, hematoma, etc.), when the radial artery pulse is unclear during secondary interventional surgery, when bilateral radial arteries are used to treat CTO, or when the radial artery is acute or chronic occluded). At the same time, since the patient's hand can be naturally placed on the abdomen during the operation, it brings better comfort to the patient and makes the operation more convenient for the operator. In addition, clinical data show that the distal radial artery puncture technology has a lower chance of postoperative complications than traditional radial artery puncture. Before puncture, it is necessary to determine the puncture position and assist in fixing the hand before puncture, and an auxiliary positioning device is required.

[0003] After searching, the Chinese patent with application number 202221549446.6 discloses a distal radial artery puncture arm support, including a support plate, a long groove is provided in the middle of the support plate, a soft cushion that can move along the long groove is provided in the long groove, and a wooden handle is provided on one side of the top surface of the support plate, the wooden handle is arranged obliquely, and the connection end of the wooden handle and the support plate is close to one side of the soft cushion. This application adopts a soft cushion that moves in the long groove of the support plate to meet the needs of patients with different arm lengths; during puncture, the patient holds the wooden handle with his right hand, and by fine-tuning the angle to the left or right, the distal radial artery is exposed in the best position, which is convenient for a one-time puncture success and convenient operation during the operation, saving time and reducing intraoperative risks.

[0004] The above-mentioned arm rest can only support the arm during radial artery puncture, but cannot restrict the arm or adjust the angle of the hand, which may cause the patient's arm to move during the puncture, resulting in puncture failure. Summary of the invention

[0005] The radial artery puncture process in the above-mentioned prior art cannot achieve multiple functions of arm support, restriction and hand angle adjustment, which may lead to a technical problem that the patient's arm moves during the puncture process, resulting in puncture failure.

[0006] Technical idea: Based on the problems of the prior art, the present application provides a distal radial artery puncture assisting device, which achieves the purpose of providing support and restriction during distal radial artery puncture by means of the setting of an arm rest, a wrist rest, a hand rest and a restraint belt. Furthermore, by means of the mutual cooperation between the angle adjustment component, the azimuth adjustment component and the thumb limit block, the patient's hand is adjusted to the optimal puncture posture, so that the puncture site is fully exposed and the support is stable, thereby improving the accuracy of the puncture.

[0007] To achieve the above object, the technical solution adopted by the present invention is: The present application provides a distal radial artery puncture assisting device, comprising a connecting block and an arm rest arranged on the connecting block, wherein an orientation adjustment component is arranged in the arm rest, a wrist rest is rotatably connected to the orientation adjustment component, an angle adjustment component is arranged in the wrist rest, a hand rest is fixedly connected to the angle adjustment component, the wrist rest and the hand rest are both located above the connecting block, and restraint belts are arranged on the wrist rest and the hand rest.

[0008] In detail, the connecting block is a rectangular parallelepiped structure, the arm rest is an L-shaped structure, and the hand rest is a trapezoidal structure.

[0009] Furthermore, an L-shaped groove is provided on the connecting block, a lifting plate is slidably arranged in the L-shaped groove, a support plate is fixedly connected to the lifting plate, and an airbag A is arranged on the support plate.

[0010] Specifically, the lifting plate is an L-shaped structure.

[0011] Furthermore, the arm support is a hollow structure with an opening at the bottom, and a movable opening for the lifting plate to move up and down is provided on the front side of the arm support, and an airbag B is provided in the arm support, and the airbag B is connected to the airbag A through a connecting hose.

[0012] In the above technical solution, the angle adjustment assembly includes a chassis, a spring, an engaging toothed disc A, a connecting platform, an engaging toothed disc B and a pushing disc; A chassis is fixedly connected to the left side surface of the wrist rest, a spring is fixedly connected to the chassis, and an engaging gear disk A is fixedly connected to the end of the spring; a connecting platform is fixedly provided in the engaging gear disk A, and a pushing disk is rotatably connected to the end of the connecting platform; the engaging gear disk A is meshed with the engaging gear disk B fixedly connected to the wrist rest; there is a certain gap between the engaging gear disk B and the pushing disk, and the pushing disk is fixedly connected to the palm rest.

[0013] It should be noted that a cavity is provided in the wrist rest, and the spring, meshing gear plate A, connecting platform and meshing gear plate B are all arranged in the cavity in the wrist rest, and the pushing plate is located on the outside of the wrist rest.

[0014] Furthermore, the azimuth adjustment assembly includes a rotating shaft, a gear, a slide rail and a rack; A slide rail is fixedly connected to the right inner wall of the arm rest, and a rack is slidably arranged in the slide rail; one end of the rack is fixedly connected to the lifting plate, and the other end is meshed with a gear; a rotating shaft is fixedly connected to the wrist rest, and the rotating shaft is rotatably connected to the arm rest, and a gear is fixedly connected to the end of the rotating shaft.

[0015] Preferably, a thumb limit block is connected to the right end of the palm rest, a card block is provided on the thumb limit block, the card block is engaged with a card strip provided on the right side of the palm rest, and two telescopic rods are slidably provided on the right side of the palm rest, and the end of each telescopic rod is fixedly connected to the thumb limit block.

[0016] In detail, the thumb limit block is an L-shaped structure, and the thumb can be accommodated under the thumb limit block.

[0017] Furthermore, two mounting brackets are fixedly connected to the bottom of the connection block, and each of the mounting brackets is threadedly connected with a screw.

[0018] In the above technical solution, a method for operating a distal radial artery puncture assist device comprises the following steps: S1: The whole device is fixedly mounted on the bed or desktop through the mounting frame; S2: Place the patient's arm on the armrest, place the thumb in the thumb limit block, and restrain the patient's wrist and back of the hand with a restraint belt; S3: The angle of the palm rest is adjusted by rotating the angle adjustment component; S4: The wrist and hand rests are flipped synchronously, and the wrist and the side of the hand are supported by the orientation adjustment component during the flipping process.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention fixes the entire device on a bed or a table by means of screws and a mounting frame, thereby placing the device in a stable state, which facilitates supporting and fixing the patient's hand for puncture.

[0020] 2. The present invention supports and limits the patient's arm, wrist, palm and thumb through an arm rest, a wrist rest, a hand rest, a thumb limit block and a restraint belt, thereby keeping the patient's hand in a stable state during radial artery puncture, further improving the success rate of puncture.

[0021] 3. The present invention pushes the push disk to release the engagement between the meshing toothed disk A and the meshing toothed disk B, and further adjusts the patient's hand to the most suitable puncture angle by rotating the hand rest, and then releases the push disk. Under the elastic force of the spring, the meshing toothed disk A and the meshing toothed disk B are meshed and locked again, so that the hand rest stably supports and fixes the patient's hand.

[0022] 4. The present invention drives the wrist rest and the hand rest to flip synchronously through the hand. During the flipping process, the gear rotates to drive the rack to move upward along the slide rail. During the movement of the rack, the lifting plate, the support plate on the lifting plate and the airbag A are driven to move. Then, the gas in the airbag B is squeezed into the airbag A through the connecting hose through the lifting plate, so that the airbag A expands. Then, the airbag A wraps and stably supports the side of the flipped hand, and the flipped hand makes the radial artery puncture site upward and fully exposed, which is more conducive to the doctor's puncture. This greatly reduces the puncture deviation caused by improper hand position, improves the accuracy of puncture, and reduces the probability of repeated punctures. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a three-dimensional diagram of the structure of the initial state of the present invention; Figure 2 For the present invention Figure 1 Middle top view; Figure 3 For the present invention Figure 2 Middle main view; Figure 4 For the present invention Figure 3 center right view; Figure 5 It is a three-dimensional diagram of the structure in the state of use of the present invention; Figure 6 For the present invention Figure 5 Middle top view; Figure 7 For the present invention Figure 6 Middle main view; Figure 8 For the present invention Figure 7 center right view; Fig. 9 This is a three-dimensional diagram of the structure of the azimuth adjustment component of the present invention; Fig.10This is a three-dimensional diagram of the angle adjustment component structure of the present invention; Fig.11 The present invention Fig.10 Exploded view in ; Fig.12 It is a three-dimensional diagram of the connection structure between the hand rest and the thumb limit block of the present invention; Fig.13 This is a three-dimensional diagram of the palm rest structure of the present invention; In the figure: 1. connecting block; 101. lifting plate; 102. supporting plate; 103. airbag A; 2. arm support; 201. airbag B; 202. connecting hose; 3. azimuth adjustment assembly; 301. rotating shaft; 302. gear; 303. slide rail; 304. rack; 4. wrist rest; 5. angle adjustment assembly; 501. chassis; 502. spring; 503. meshing gear disc A; 504. connecting platform; 505. meshing gear disc B; 506. pushing plate; 6. hand support; 7. restraint belt; 8. thumb limit block; 9. clamping block; 10. clamping strip; 11. telescopic rod; 12. mounting bracket; 13. screw. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "front end", "back end", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0027] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] The inventors have found that in the existing radial artery puncture process, due to the lack of effective auxiliary devices, it is difficult for the patient to maintain the best hand posture, which not only increases the difficulty of puncture, but also may lead to puncture failure, causing the patient to suffer from multiple punctures. At the same time, unstable hand position will also affect the accuracy of puncture and increase the risk of complications. For medical staff, it takes more time and energy to adjust the patient's hand posture, and the operation process is cumbersome, which reduces work efficiency.

[0029] Based on the above findings, the present application provides a distal radial artery puncture assisting device, comprising a connecting block 1 and an arm rest 2 arranged on the connecting block 1, wherein an azimuth adjustment component 3 is arranged inside the arm rest 2, a wrist rest 4 is rotatably connected to the azimuth adjustment component 3, an angle adjustment component 5 is arranged inside the wrist rest 4, a hand rest 6 is fixedly connected to the angle adjustment component 5, the wrist rest 4 and the hand rest 6 are both located above the connecting block 1, and a restraint belt 7 is arranged on the wrist rest 4 and the hand rest 6. Embodiment 1

[0030] Reference Figure 1-13 As shown, the present application provides a distal radial artery puncture assisting device, comprising a connecting block 1 and an arm rest 2 arranged on the connecting block 1, wherein an orientation adjustment component 3 is arranged inside the arm rest 2, a wrist rest 4 is rotatably connected to the orientation adjustment component 3, an angle adjustment component 5 is arranged inside the wrist rest 4, a hand rest 6 is fixedly connected to the angle adjustment component 5, the wrist rest 4 and the hand rest 6 are both located above the connecting block 1, and restraint belts 7 are arranged on the wrist rest 4 and the hand rest 6.

[0031] The arm support 2, the wrist support 4 and the hand support 6 can support the hand and the arm, thereby providing support for the hand during radial artery puncture, thereby preventing the hand from shaking due to loss of support.

[0032] In particular, the restraint belt 7 provided on the wrist support 4 and the hand support 6 can further restrain the hands, thereby avoiding the problem of puncture failure caused by the patient moving his hands due to puncture pain.

[0033] Preferably, the ends of the restraint belt 7 can be connected by Velcro, so that it can be adjusted according to the arms of different patients to achieve restraint and binding of the patient's hands.

[0034] Furthermore, an L-shaped groove is provided on the connecting block 1 , a lifting plate 101 is slidably arranged in the L-shaped groove, a support plate 102 is fixedly connected to the lifting plate 101 , and an airbag A 103 is arranged on the support plate 102 .

[0035] Furthermore, the arm support 2 is a hollow structure with an opening at the bottom, and a movable opening for the lifting plate 101 to move up and down is provided on the front side of the arm support 2, and an airbag B201 is provided in the arm support 2, and the airbag B201 is connected to the airbag A103 through a connecting hose 202.

[0036] Specifically, the angle adjustment assembly 5 includes a chassis 501, a spring 502, an engaging toothed disc A 503, a connecting platform 504, an engaging toothed disc B 505 and a pushing disc 506; A chassis 501 is fixedly connected to the left side surface of the wrist rest 4, a spring 502 is fixedly connected to the chassis 501, and an engaging toothed disc A503 is fixedly connected to the end of the spring 502; a connecting platform 504 is fixedly sleeved inside the engaging toothed disc A503, and a pushing disc 506 is rotatably connected to the end of the connecting platform 504; the engaging toothed disc A503 is meshed with an engaging toothed disc B505 fixedly connected to the wrist rest 4; there is a certain gap between the engaging toothed disc B505 and the pushing disc 506, and the pushing disc 506 is fixedly connected to the palm rest 6.

[0037] In order to achieve a better puncture angle during hand puncture, the push disk 506 is pushed to release the engagement between the meshing toothed disk A503 and the meshing toothed disk B505, and the patient's hand is further adjusted to the most suitable puncture angle by rotating the hand rest 6. Then the push disk 506 is released, and under the elastic force of the spring 502, the meshing toothed disk A503 and the meshing toothed disk B505 are meshed and locked again, so that the hand rest 6 stably supports and fixes the patient's hand.

[0038] Furthermore, the azimuth adjustment assembly 3 includes a rotating shaft 301, a gear 302, a slide rail 303 and a rack 304; A slide rail 303 is fixedly connected to the right inner wall of the arm rest 2, and a rack 304 is slidably arranged inside the slide rail 303; one end of the rack 304 is fixedly connected to the lifting plate 101, and the other end is meshed with the gear 302; a rotating shaft 301 is fixedly connected to the wrist rest 4, the rotating shaft 301 is rotatably connected to the arm rest 2, and a gear 302 is fixedly connected to the end of the rotating shaft 301.

[0039] To facilitate puncture, the patient's hand needs to be turned over so that the radial artery puncture site is located above and fully exposed, thereby improving the success rate and accuracy of the puncture, and also reducing the workload of medical staff.

[0040] During the specific operation, the wrist rest 4 and the hand rest 6 are synchronously flipped by the hand. During the flipping process, the gear 302 rotates to drive the rack 304 to move upward along the slide rail 303. During the movement of the rack 304, the lifting plate 101 and the support plate 102 on the lifting plate 101 and the airbag A103 are driven to move. Then, the gas in the airbag B201 is squeezed into the airbag A103 through the connecting hose 202 through the lifting plate 101, so that the airbag A103 expands, and then the airbag A103 wraps and stably supports the side of the flipped hand, and the flipped hand makes the radial artery puncture site upward and fully exposed, which is more conducive to the doctor's puncture. This greatly reduces the puncture deviation caused by improper hand position, improves the accuracy of puncture, and reduces the probability of repeated punctures. Embodiment 2

[0041] On the basis of the first embodiment, in order to better expose the puncture site, the thumb is separated and restricted from other fingers by a thumb limit block 8 connected to the right end of the hand rest 6 .

[0042] Specifically, a card block 9 is provided on the thumb limit block 8, and the card block 9 is engaged with a card strip 10 provided on the right side of the palm rest 6, and two telescopic rods 11 are slidably provided on the right side of the palm rest 6, and the end of each telescopic rod 11 is fixedly connected to the thumb limit block 8.

[0043] The position of the thumb limit block 8 is adjusted according to the fingers of different patients, so that the puncture site of the patient is exposed as fully as possible. The block 9 and the card strip 10 are disengaged by extending the telescopic rod 11, and the telescopic rod 11 is further slid to drive the thumb limit block 8 to move and then adjust the position of the thumb limit block 8. After adjustment, the telescopic rod 11 is compressed, so that the block 9 and the card strip 10 are engaged and locked, so as to achieve the restriction of the patient's thumb.

[0044] Furthermore, in order to keep the overall device stable, two mounting frames 12 are fixedly connected to the bottom of the connecting block 1, each mounting frame 12 is threadedly connected with a screw 13, and the mounting frame 12 is clamped to the bedside or table side, and the mounting frame 12 is further connected and fixed to the bedside or table side by screwing the screw 13, thereby improving the stability of the overall device and facilitating puncture of the patient's radial artery. Specific application cases:

[0045] Now, in combination with Example 1 and Example 2, the specific application of a distal radial artery puncture assisting device of the present application in distal radial artery puncture is described in detail.

[0046] The distal radial artery puncture technique uses the distal radial artery on the back of the hand, that is, the radial artery located in the radial fossa, as the arterial access site for interventional technology. The direct advantages of the distal radial artery puncture technique are that it can reduce the complications of major bleeding, increase the comfort of patients, reduce the risk of closure of the radial artery near the forearm, and recover faster after surgery. In addition, for patients who undergo multiple punctures for treatment, puncturing from the distal end can greatly protect the patency of the arterial access and facilitate the success of multiple punctures.

[0047] Before puncture, the mounting frame 12 is clamped to the bedside or tableside, and the mounting frame 12 is further connected and fixed to the bedside or tableside by screwing the screw 13 .

[0048] The patient places his arm on the arm rest 2, and the patient's wrist and hand are fixed by the restraint belt 7. In order to present a better puncture angle during the hand puncture process, the push disk 506 is pushed to release the engagement between the meshing gear disk A503 and the meshing gear disk B505, and the patient's hand is further adjusted to the most suitable puncture angle by rotating the hand rest 6, and then the push disk 506 is released. Under the elastic force of the spring 502, the meshing gear disk A503 and the meshing gear disk B505 are meshed and locked again, so that the hand rest 6 stably supports and fixes the patient's hand.

[0049] The position of the thumb limit block 8 is adjusted according to the fingers of different patients, so that the puncture site of the patient is exposed as fully as possible. The block 9 and the card strip 10 are disengaged by extending the telescopic rod 11, and the telescopic rod 11 is further slid to drive the thumb limit block 8 to move and then adjust the position of the thumb limit block 8. After adjustment, the telescopic rod 11 is compressed, so that the block 9 and the card strip 10 are engaged and locked, so as to achieve the restriction of the patient's thumb.

[0050] Furthermore, the wrist rest 4 and the hand rest 6 are synchronously flipped by the hand, and during the flipping process, the gear 302 rotates to drive the rack 304 to move upward along the slide rail 303, and during the movement of the rack 304, the lifting plate 101 and the support plate 102 and the airbag A103 on the lifting plate 101 are driven to move, and then the gas in the airbag B201 is squeezed into the airbag A103 through the connecting hose 202 by the lifting plate 101, so that the airbag A103 expands, and then the airbag A103 wraps and stably supports the side of the flipped hand, and the flipped hand makes the radial artery puncture site upward and fully exposed, which is more conducive to the doctor's puncture, which greatly reduces the puncture deviation caused by improper hand position, improves the accuracy of puncture, and reduces the probability of repeated puncture.

[0051] After fixing the patient's hand, the medical staff began to prepare for the puncture. The medical staff placed their left hand about 1 cm proximal to the puncture point, pressed the direction of the artery with the index finger and middle finger, and held the blood return cavity and needle handle of the indwelling needle with the thumb and middle finger of the right hand respectively; the needle tip was beveled upward and inserted directly into the blood vessel at an angle of 30°-45°. After the needle was inserted, the puncture angle was lowered when blood returned, and the needle core was slowly retracted. At the same time, the right hand held the needle wing to insert the cannula along the direction of the blood vessel until the needle core was completely retracted.

[0052] It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these 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. A distal radial artery puncture assisting device, comprising a connecting block (1) and an arm support (2) arranged on the connecting block (1), characterized in that: The arm rest (2) is provided with an orientation adjustment component (3), the orientation adjustment component (3) is rotatably connected to a wrist rest (4), the wrist rest (4) is provided with an angle adjustment component (5), the angle adjustment component (5) is fixedly connected to a hand rest (6), the wrist rest (4) and the hand rest (6) are both located above the connection block (1), and restraint belts (7) are both provided on the wrist rest (4) and the hand rest (6).

2. A distal radial artery puncture assisting device according to claim 1, characterized in that: An L-shaped groove is provided on the connection block (1), a lifting plate (101) is slidably arranged in the L-shaped groove, a support plate (102) is fixedly connected to the lifting plate (101), and an airbag A (103) is arranged on the support plate (102).

3. A distal radial artery puncture assisting device according to claim 2, characterized in that: The arm support (2) is a hollow structure with an opening at the bottom, and a movable opening for the lifting plate (101) to move up and down is provided on the front side of the arm support (2), and an airbag B (201) is arranged in the arm support (2), and the airbag B (201) is connected to the airbag A (103) via a connecting hose (202).

4. A distal radial artery puncture assisting device according to claim 3, characterized in that: The angle adjustment assembly (5) comprises a chassis (501), a spring (502), an engaging toothed disc A (503), a connecting platform (504), an engaging toothed disc B (505) and a pushing disc (506); A chassis (501) is fixedly connected to the left side of the wrist rest (4), a spring (502) is fixedly connected to the chassis (501), and an end of the spring (502) is fixedly connected to a meshing gear disk A (503); A connecting platform (504) is fixedly sleeved inside the meshing toothed disc A (503), and an end of the connecting platform (504) is rotatably connected to a pushing disc (506); The meshing toothed disc A (503) meshes with a meshing toothed disc B (505) fixedly connected to the wrist rest (4); There is a certain gap between the meshing toothed disc B (505) and the pushing disc (506), and the pushing disc (506) is fixedly connected to the hand rest (6).

5. A distal radial artery puncture assisting device according to claim 4, characterized in that: The azimuth adjustment component (3) comprises a rotating shaft (301), a gear (302), a slide rail (303) and a rack (304); A slide rail (303) is fixedly connected to the right inner wall of the arm support (2), and a rack (304) is slidably arranged inside the slide rail (303); One end of the rack (304) is fixedly connected to the lifting plate (101), and the other end is meshed with the gear (302); A rotating shaft (301) is fixedly connected to the wrist support (4), the rotating shaft (301) is rotatably connected to the arm support (2), and a gear (302) is fixedly connected to the end of the rotating shaft (301).

6. A distal radial artery puncture assisting device according to claim 5, characterized in that: The right side end of the hand rest (6) is connected to a thumb limit block (8), the thumb limit block (8) is provided with a clamping block (9), the clamping block (9) is engaged with a clamping strip (10) provided on the right side surface of the hand rest (6), and two telescopic rods (11) are slidably provided on the right side surface of the hand rest (6), and the end of each telescopic rod (11) is fixedly connected to the thumb limit block (8).

7. A distal radial artery puncture assisting device according to claim 6, characterized in that: Two mounting frames (12) are fixedly connected to the bottom of the connection block (1), and each mounting frame (12) is threadedly connected with a screw (13).

8. The method for operating the distal radial artery puncture assisting device according to claim 7, characterized in that: The following steps are involved: S1: The whole device is fixedly mounted on a bed or a table through a mounting frame (12); S2: placing the patient's arm on the arm rest (2), placing the thumb in the thumb limit block (8), and restraining the patient's wrist and back of the hand with a restraint belt (7); S3: adjusting the angle of the palm rest (6) by rotating the angle adjustment component (5); S4: Synchronously flipping the wrist support (4) and the hand support (6), and supporting the wrist and the side of the hand through the orientation adjustment component (3) during the flipping process.

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