Radial artery puncture auxiliary device for intensive care medicine department

Abstract

The invention relates to the technical field of medical equipment, in particular to a radial artery puncture auxiliary device for the intensive care medicine department, which comprises a supporting plate, two side edges are symmetrically and fixedly connected to the outer wall of the supporting plate, a cushion is arranged at the upper end of the supporting plate, two sides of the supporting plate are of arc-shaped structures, and a fixing mechanism is mounted on one side of the supporting plate. A first groove is formed in one side of the lower end of the supporting plate, a second groove is formed in the other side of the lower end of the supporting plate, a sliding groove is formed in the inner wall of the second groove, an inner cavity is formed in the middle of the supporting plate, and the two ends of the inner cavity are communicated with the first groove and the sliding groove respectively. The two sides of the supporting plate are designed to be of an arc-shaped structure, the supporting plate conforms to the physiological curve of the hand of the human body, the use comfort is improved, the fixing mechanism and the elastic mechanism are arranged on one side of the supporting plate, and during use, a roller body of the fixing mechanism and the supporting plate form a synergistic effect through stable tension provided by the elastic mechanism to stably press the hand of a patient; the wrist of the patient is passively maintained at the standard reverse arch position, and stable conditions are created for follow-up radial artery puncture operation.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a radial artery puncture assist device for intensive care unit. Background Technology

[0002] In intensive care unit (ICU) clinical practice, hemodynamic monitoring is a core tool for assessing circulatory function in critically ill patients, guiding fluid resuscitation, and administering vasoactive drugs. The radial artery, due to its superficial location, ease of access, and relatively safe anatomical position, is the preferred site for invasive blood pressure monitoring and arterial blood sample collection. However, traditional radial artery puncture procedures heavily rely on the clinical experience and dexterity of healthcare professionals. In patients with obesity, weak vascular pulsation due to hypotension, peripheral circulatory disturbances causing vasoconstriction, or anatomical variations, difficulties in puncture localization and repeated punctures are common. This not only increases the risk of vascular injury, local bleeding, hematoma, and infection but also delays the timely acquisition of hemodynamic parameters due to prolonged procedures, affecting the accuracy and timeliness of diagnostic and treatment decisions. Therefore, there is an urgent need for a specialized device that can assist in localization and improve the success rate and safety of puncture to meet the needs of efficient hemodynamic monitoring in ICUs.

[0003] For example, patent publication number CN211534711U disclosed on September 22, 2020, a radial artery puncture aid device including a base that is movably covered with a leather sheath. One end of the base is fixedly connected to one end of a palm fixation strap arranged opposite to it. The other end of the palm fixation strap is provided with a snap fastener. A finger loop is fixedly provided on the palm fixation strap. The other end of the base is fixedly connected to one end of a forearm fixation strap arranged opposite to it. The other end of the forearm fixation strap is provided with a snap fastener. A support pad fixed on the base is provided between the palm fixation strap and the forearm fixation strap. The palm fixation strap is located at the palm part, the forearm fixation strap is located at the forearm part, and the support pad is located at the wrist joint part. Securely fixed, making the radial artery easier to locate and significantly improving the success rate of radial artery puncture on the first attempt: It effectively maintains the required reverse arch position for puncture, naturally straightens and fixes the blood vessel, making it less prone to displacement during puncture and easier to perform, solving the difficulty of radial artery slippage during puncture; The radial artery is closer to the body surface and easier to locate, with more accurate positioning, allowing nurses to more accurately locate the optimal puncture point and needle depth, further improving the success rate of puncture on the first attempt; Significantly reduces patient pain during puncture: It can tighten the skin at the puncture site, reducing resistance during puncture and significantly reducing pain; Reduces patient interference: The widened base increases stability and fixes the forearm and palm, reducing patient non-cooperation; Reduces manpower: It is easy to operate, and because it is securely fixed, there is no need for another nurse to hold the patient's forearm and palm, saving nurses' labor costs; Improves work efficiency: The high puncture success rate improves nurses' work efficiency; High practicality: The device is simple and convenient to operate and use, and nurses can easily master it. However, significant shortcomings remain in practical applications: The core design relies on the patient placing their wrist on a supporting pad to passively maintain a reverse arch position, thus bringing the radial artery close to the body surface. However, the supporting pad itself has a certain degree of deformation, and in a hospital bed setting, the mattress is prone to sinking under pressure, making it difficult for the device to provide stable support for the wrist. This makes it difficult to ensure the wrist is passively maintained in the standard reverse arch position, ultimately requiring the patient to actively adjust their posture to meet the puncture requirements, causing inconvenience during the procedure. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a radial artery puncture assist device for use in the intensive care unit.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a radial artery puncture auxiliary device for intensive care unit, including a support plate, two sides are symmetrically fixedly connected to the outer wall of the support plate, and a soft pad is provided at the upper end of the support plate; Both sides of the tray are arc-shaped and a fixing mechanism is installed on one side. A first groove is opened on one side of the lower end of the tray, and a second groove is opened on the other side of the lower end. A sliding groove is opened on the inner wall of the second groove. An inner cavity is opened in the middle of the tray. The two ends of the inner cavity are respectively connected to the first groove and the sliding groove. A tensioning mechanism is installed between the inner cavity and the sliding groove. The tensioning mechanism is connected to the fixing mechanism. The fixing mechanism includes a rotating shaft that extends longitudinally through the first groove and is fixedly connected to connecting plates at both ends. A roller is rotatably connected to one side of the two connecting plates, and two fixedly connected sleeve blocks are sleeved in the middle of the rotating shaft. The tensioning mechanism includes a slide rod and a first screw. The slide rod is movably connected in the inner cavity. One end of the slide rod is tied to the middle of the rotating shaft by a connecting rope. The other end of the slide rod is fixedly connected to a fixed plate. A fixed spring is sleeved on the outer side of the slide rod.

[0006] Specifically, a mounting sleeve is rotatably connected to the lower middle part of the tray. The mounting sleeve has a U-shaped structure and a second screw threaded through its lower side wall. A clamping plate is rotatably connected to the upper end of the second screw.

[0007] Specifically, two slots are symmetrically opened on the inner wall of the first groove, and a mounting plate is fixedly connected to one side of the first groove. A limiting plate is rotatably connected to the upper end of the mounting plate, and one end of the limiting plate is inserted into one of the slots.

[0008] Specifically, one end of the slide rod extends through the side wall of the inner cavity into the first groove.

[0009] Specifically, one end of the first screw is rotatably connected to the inner wall of the second groove, and a friction sleeve is fixedly connected to the outer side of one end. A threaded sleeve is fitted to the outer side of the other end of the first screw. The end of the threaded sleeve abuts against the fixed plate. The outer side of the threaded sleeve has a square structure that matches the groove.

[0010] Specifically, two mounting blocks are fixedly connected to the outer wall of the tray, and a placement plate is rotatably connected between the mounting blocks. The lower end of the placement plate abuts against the upper end of the mounting clip, and a placement groove is provided at the upper end of the placement plate.

[0011] Specifically, the fixed disk is slidably connected to the inner wall of the cavity, and the side wall is fixedly connected to one end of the fixed spring.

[0012] Specifically, a rubber sleeve is provided on the outer side of the roller body.

[0013] The beneficial effects of this invention are: (1) The tray of the present invention adopts an arc-shaped structure design on both sides, which fits the physiological curve of the human hand and improves the comfort of use. The tray is equipped with a fixing mechanism and a tightening mechanism on one side. When in use, the roller of the fixing mechanism works in synergy with the tray with the help of the stable tension provided by the tightening mechanism to firmly press the patient's hand, so that the patient's wrist is passively maintained in the standard reverse arch position, creating stable conditions for subsequent radial artery puncture operation.

[0014] (2) The lower end of the support plate of the present invention is specially provided with an installation clip. The clip has reliable clamping performance and can be firmly clamped to the edge of the bed during use, thereby accurately fixing the height and position of the support plate, effectively avoiding the problem of unstable support caused by the sinking of the pad, and providing continuous and stable support for the patient's wrist. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a front sectional view of the present invention during use; Figure 2 This is a schematic diagram of the mounting structure of the fixing mechanism of the present invention on the tray; Figure 3 This is a schematic diagram of the external structure when the present invention is in use; Figure 4 This is a side sectional view of the present invention in use; Figure 5 This is a front sectional view of the present invention when it is being stored.

[0017] In the diagram: 1. Support plate; 2. Fixing mechanism; 21. Rotating shaft; 22. Sleeve block; 23. Connecting plate; 24. Roller body; 25. Rubber sleeve; 3. First groove; 4. Second groove; 5. Inner cavity; 6. Slide groove; 7. Tightening mechanism; 71. Slide rod; 72. First screw; 73. Fixing disc; 74. Connecting rope; 75. Fixing spring; 76. Screw sleeve; 77. Friction sleeve; 8. Slot; 9. Mounting plate; 10. Limiting plate; 11. Mounting clamp; 12. Second screw; 13. Clamping plate; 14. Mounting block; 15. Placement plate; 16. Side. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0019] like Figures 1-5As shown, the present invention provides a radial artery puncture auxiliary device for intensive care unit, including a support plate 1, two sides 16 are symmetrically fixedly connected to the outer wall of the support plate 1, a soft pad is provided at the upper end of the support plate 1, and an installation clip 11 is rotatably connected to the middle of the lower end of the support plate 1. The installation clip 11 has a U-shaped structure and a threaded second screw 12 passes through the lower side wall. A clamping plate 13 is rotatably connected to the upper end of the second screw 12. Both sides of the tray 1 are arc-shaped and a fixing mechanism 2 is installed on one side. A first groove 3 is opened on the lower side of the tray 1. Two slots 8 are symmetrically opened on the inner wall of the first groove 3. An installation plate 9 is fixedly connected to one side of the first groove 3. A limit plate 10 is rotatably connected to the upper end of the installation plate 9. One end of the limit plate 10 is inserted into one of the slots 8. A second groove 4 is opened on the other side of the lower end. A sliding groove 6 is opened on the inner wall of the second groove 4. An inner cavity 5 is opened in the middle of the tray 1. The two ends of the inner cavity 5 are respectively connected to the first groove 3 and the sliding groove 6. A tensioning mechanism 7 is installed between the inner cavity 5 and the sliding groove 6. The tensioning mechanism 7 is connected to the fixing mechanism 2. The fixing mechanism 2 includes a rotating shaft 21, which runs longitudinally through the first groove 3 and is fixedly connected to both ends of a connecting plate 23. A roller body 24 is rotatably connected to one side of the two connecting plates 23. A rubber sleeve 25 is fitted on the outer side of the roller body 24. Two fixedly connected sleeve blocks 22 are fitted in the middle of the rotating shaft 21. The tensioning mechanism 7 includes a slide rod 71 and a first screw 72. The slide rod 71 is movably connected in the inner cavity 5. One end of the slide rod 71 extends through the side wall of the inner cavity 5 into the first groove 3. One end of the slide rod 71 is tied to the middle of the rotating shaft 21 by a connecting rope 74. The other end of the slide rod 71 is fixedly connected to a fixing plate 73. A fixing spring 75 is sleeved on the outer side of the slide rod 71. The fixing plate 73 is slidably connected to the inner wall of the inner cavity 5, and the side wall is fixedly connected to one end of the fixing spring 75. One end of the first screw 72 is rotatably connected to the inner wall of the second groove 4, and a friction sleeve 77 is fixedly connected on the outer side of one end. A threaded sleeve 76 is sleeved on the outer side of the other end of the first screw 72. The end of the sleeve 76 abuts against the fixing plate 73. The outer side of the sleeve 76 has a square structure that matches the slide groove 6. Specifically, two mounting blocks 14 are fixedly connected to the outer wall of the tray 1, and a placement plate 15 is rotatably connected between the mounting blocks 14. The lower end of the placement plate 15 abuts against the upper end of the mounting clip 11, and a placement groove is provided at the upper end of the placement plate 15.

[0020] In use, carry the device to the work site, rotate the mounting sleeve 11 from the lower end of the support plate 1, so that it is on the same side as the placement plate 15, and rotate the limiting plate 10 until it is rotated away from the lower end of the sleeve block 22 and inserted into one of the slots 8, ensuring that the rotating shaft 21 can rotate. Then, clamp the mounting sleeve 11 at the edge of the hospital bed, rotate the second screw 12 to move the clamp 13 upward until the clamp 13 is pressed against the hospital bed, fixing the device to the hospital bed. Then rotate the connecting plate 23 clockwise until the roller 24 is rotated above the support plate 1, expanding the space between the roller 24 and the support plate 1. During this process, the rotating shaft 21 will continuously wind the connecting rope 74, and the connecting rope 74 will continuously pull the slide rod 71. The slide rod 71 will continuously compress the fixing spring 75 through the fixing plate 73. At this time, the patient can place their forearm on the support plate 1. The soft pad on the top can prevent the patient from feeling uncomfortable. The side 16 can be used to position the forearm, making it easy to straighten the forearm. Pass the hand between the roller 24 and the support plate 1, with the wrist resting on the side of the support plate 1 in a reverse arch position. Then slowly release the roller 24. The fixing spring 75 pushes the fixing plate 73 to drive the slide rod 71 to slide, gradually removing the connecting rope 74 from the rotating shaft 21 and driving the rotating shaft 21 to rotate counterclockwise until the roller 24 is pressed on the patient's palm, keeping the patient's wrist in a reverse arch position, creating stable conditions for subsequent radial artery puncture. The rubber sleeve 25 on the roller 24 can prevent the roller 24 from squeezing the patient's palm for a long time, which would cause the patient to feel uncomfortable. Then flip the placement plate 15 until it is placed on the upper end of the mounting clip 11. Place the puncture tools in the placement groove on the placement plate 15, and then perform the puncture. After use, clean the waste liquid in the placement tank, turn the placement plate 15 back to its original position, turn the second screw 12 in the opposite direction to make the clamp 13 detach from the bed, remove the device, turn the installation sleeve 11 to the bottom of the support plate 1, and then turn the limiting plate 10 in the opposite direction to press the limiting plate 10 against the lower end of the sleeve block 22 so that the rotating shaft 21 cannot rotate. If the elasticity of the fixed spring 75 is found to be weakened during use, the first screw 72 can be rotated by the friction sleeve 77 to drive the screw sleeve 76 to squeeze the fixed plate 73, thereby squeezing the fixed spring 75, shortening the pitch of the fixed spring 75, temporarily restoring the elasticity of the fixed spring 75, and then the connecting rope 74 can be re-tied to the rotating shaft 21 to keep it in a straight state for continued use. Afterwards, the fixed spring 75 can be replaced during maintenance and repair.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A radial artery puncture auxiliary device for intensive care medicine, comprising a supporting plate (1), two side edges (16) are symmetrically and fixedly connected to the outer wall of the supporting plate (1), and a soft pad is arranged at the upper end of the supporting plate (1); characterized in that one side of the supporting plate (1) is in an arc-shaped structure and is provided with a fixing mechanism (2), a first groove (3) is arranged at one side of the lower end of the supporting plate (1), a second groove (4) is arranged at the other side of the lower end of the supporting plate (1), a sliding groove (6) is arranged in the inner wall of the second groove (4), an inner cavity (5) is arranged in the middle of the supporting plate (1), the two ends of the inner cavity (5) are communicated with the first groove (3) and the sliding groove (6) respectively, and a tension mechanism (7) is jointly arranged between the inner cavity (5) and the sliding groove (6); the fixing mechanism (2) comprises a rotating shaft (21), the rotating shaft (21) penetrates through the first groove (3) in the longitudinal direction, and the two ends of the rotating shaft (21) are fixedly connected with connecting plates (23), one side of the two connecting plates (23) is jointly and rotatably connected with a roller body (24), and the middle of the rotating shaft (21) is sleeved with two fixedly connected sleeve blocks (22); the tension mechanism (7) comprises a sliding rod (71) and a first screw rod (72), the sliding rod (71) is movably connected in the inner cavity (5), one end of the sliding rod (71) is bound to the middle of the rotating shaft (21) through a connecting rope (74), the other end of the sliding rod (71) is fixedly connected with a fixing disc (73), and the outer side of the sliding rod (71) is sleeved with a fixed spring (75).

2. The radial artery puncture auxiliary device for a critical care medical department according to claim 1, characterized in that: a mounting clamp sleeve (11) is rotatably connected to the middle of the lower end of the supporting plate (1), the mounting clamp sleeve (11) is in a U-shaped structure, a second screw rod (12) is threaded through the side wall of the lower end of the mounting clamp sleeve (11), and the upper end of the second screw rod (12) is rotatably connected with a clamping plate (13).

3. The radial artery puncture auxiliary device for a critical care medical department according to claim 1, characterized in that: two insertion grooves (8) are symmetrically arranged in the inner wall of the first groove (3), an installation plate (9) is fixedly connected to one side of the first groove (3), the upper end of the installation plate (9) is rotatably connected with a limiting plate (10), and one end of the limiting plate (10) is inserted into one of the insertion grooves (8).

4. The radial artery puncture auxiliary device for a critical medical department according to claim 1, characterized in that: one end of the sliding rod (71) extends to the first groove (3) through the side wall of the inner cavity (5).

5. The radial artery puncture auxiliary device for a critical medical department according to claim 1, characterized in that: one end of the first screw rod (72) is rotatably connected to the inner wall of the second groove (4), one end of the first screw rod (72) is sleeved with a fixedly connected friction sleeve (77) on the outer side, the other end of the first screw rod (72) is sleeved with a screw sleeve (76) which is threaded on the outer side, the end of the screw sleeve (76) abuts against the fixing disc (73), and the outer side of the screw sleeve (76) is in a square structure and matches the sliding groove (6).

6. The radial artery puncture assisting device for a critical care medical department according to claim 1, characterized in that: two installation blocks (14) are fixedly connected to the outer wall of the supporting plate (1), a placing plate (15) is rotatably connected between the installation blocks (14), the lower end of the placing plate (15) abuts against the upper end of the mounting clamp sleeve (11), and a placing groove is arranged in the upper end of the placing plate (15).

7. The radial artery puncture assisting device for use in an intensive care unit according to claim 1, characterized in that: the fixing disc (73) is slidably connected with the inner wall of the inner cavity (5), and the side wall is fixedly connected with one end of the fixed spring (75).

8. The radial artery puncture assisting device for a critical care medical department according to claim 1, characterized in that: The outer side of the roller body (24) is sleeved with a rubber sleeve (25).

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