Radial artery puncture catheterization auxiliary device

Abstract

The utility model discloses a radial artery puncture indwelling catheter auxiliary device which comprises a base, a containing groove is formed in the top end of the base, a finger placing plate is rotationally connected to the inner wall of the containing groove, a first fixing ring is fixedly connected to the top end of the finger placing plate, and a first connecting rope is fixedly connected to the left side of the finger placing plate. And the right side of the finger placing plate is fixedly connected with a second connecting rope. According to the radial artery puncture catheterization auxiliary device disclosed by the utility model, fingers of a patient can be fixed by arranging the first fixing ring; a finger placing plate, a connecting rope, a piston and an inflator pump are arranged and matched with fist-clenching and fist-loosening actions of the hand of a patient, so that a telescopic pipe can stretch out and draw back to drive a pressing plate to firmly abut against or be away from the ulnar artery and the radial artery of the patient, and therefore the device has the function of conducting an improved Allen test for examining the collateral circulation condition of the patient before puncture; and after blood sampling is completed, the puncture part of a patient can be effectively stopped from bleeding.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a radial artery puncture and catheterization auxiliary device. Background Art

[0002] The radial artery is one of the preferred sites for collecting blood samples. Before collecting blood from the radial artery, a modified Allen test is required to check the patient's collateral circulation, thereby ensuring normal blood flow in the hand when radial artery embolism occurs. The specific steps are: first, the patient clenches his fist while the medical staff presses the patient's ulnar artery and radial artery, and then observes the patient's palm. Then the patient loosens his fist, and finally the medical staff only loosens the patient's ulnar artery and observes the condition of the patient's palm and compares it with the previous situation. If the patient's palm is pale, it means that the collateral circulation is poor and radial artery puncture cannot be performed.

[0003] The patent document of application number CN202321343524.1 discloses a radial artery blood sampling auxiliary pad for infants, including a pad, a finger placement piece, an arm fixing piece and a wrist top piece are arranged on the pad, the wrist top piece is arranged between the finger placement piece and the arm fixing piece, and the setting position of the wrist top piece conforms to the placement position of the human wrist, the finger placement piece is provided with a finger placement groove, the notch of the finger placement groove is arranged on the side close to the wrist top piece, the arm fixing piece is provided with an arm fixing groove, the notch of the arm fixing groove is upward, and the two side walls of the notch of the arm fixing groove have a certain elasticity, and the two side walls of the notch of the arm fixing groove are respectively provided with a restraint belt and a buckle, and the restraint belt is connected and fixed by Velcro after passing through the buckle: the human finger is placed in the finger placement groove, the human arm is placed in the arm fixing groove, and the human wrist is placed on the upper end surface of the wrist top piece, so that the human wrist position is padded and fixed. The utility model can not only better expose the radial artery of the infant's wrist, but also effectively fix the infant's wrist, facilitate blood collection, prevent the arm from being dislocated due to the crying and agitation of the infant and cause puncture failure, and improve the success rate of blood collection.

[0004] The device in the above application does not have the function of performing a modified Allen test to check the patient's collateral circulation before puncture, resulting in an inability to accurately judge whether the patient is suitable for puncture before puncture, and an inability to stop bleeding at the blood collection site more easily and effectively after blood collection is completed. In response to the above problems, we have launched a radial artery puncture and catheterization auxiliary device. Utility Model Content

[0005] The utility model discloses a radial artery puncture and catheterization auxiliary device, aiming to solve the technical problems that the existing device does not have the function of performing a modified Allen test on a patient's collateral circulation before puncture and is not convenient for effective hemostasis of the blood sampling site after blood sampling is completed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A radial artery puncture and catheterization auxiliary device comprises a base, a receiving groove is provided at the top of the base, a finger plate is rotatably connected to the inner wall of the receiving groove, a first fixing ring is fixedly connected to the top of the finger plate, a first connecting rope is fixedly connected to the left side of the finger plate, a second connecting rope is fixedly connected to the right side of the finger plate, pistons are fixedly connected to the ends of the first connecting rope and the second connecting rope away from the finger plate, an air cylinder is sleeved on the surface of the piston, two telescopic tubes are fixedly connected to the bottom end of the air cylinder, and a pressure plate is fixedly connected to the bottom end of the telescopic tube.

[0008] By setting a first fixing ring, the patient's fingers can be fixed. By setting a finger plate, a connecting rope, a piston and an inflator and coordinating with the fist-clenching and fist-unclamping actions of the hands, the telescopic tube can be extended and retracted to drive the pressure plate to firmly press against or move away from the patient's ulnar artery and radial artery. This not only enables the device to have the function of performing a modified Allen test to check the patient's collateral circulation before puncture, but also can effectively stop bleeding at the patient's puncture site after blood sampling is completed.

[0009] In a preferred embodiment, the length of the first connecting rope is smaller than that of the second connecting rope, two chambers are arranged inside the inflatable cylinder, the second connecting rope is made of elastic material, the top surface of the finger plate is flush with the top surface of the base, the size of the containing groove is larger than the size of the finger plate, and the pressure plate is arc-shaped.

[0010] The length of the first connecting rope is smaller than that of the second connecting rope and two chambers are arranged inside the inflation cylinder to ensure that the radial artery can continue to be pressed while the ulnar artery is loosened. The top surface of the finger plate is flush with the top surface of the base to ensure that the arm can be placed flat on the top surface of the base, thereby ensuring the comfort of the arm during blood collection. The size of the containing groove is larger than that of the finger plate to ensure that the finger plate has sufficient room for movement. The arc-shaped pressing plate can make the pressing plate fit the curve of the arm better when pressing the puncture position, thereby effectively improving the tightness of the pressing.

[0011] The utility model provides a radial artery puncture and catheterization auxiliary device through improvement, which has the following improvements and advantages compared with the prior art:

[0012] Firstly, the utility model can fix the patient's fingers by providing a first fixing ring, and can make the telescopic tube extend and retract by providing a finger plate, a first connecting rope, a second connecting rope, a piston and an inflator and coordinating with the fist-clenching and fist-unclamping actions of the hands to drive the pressure plate to firmly press against or move away from the patient's ulnar artery and radial artery, thereby enabling the device to not only have the function of performing a modified Allen test to check the patient's collateral circulation before puncture, but also to effectively stop bleeding at the patient's puncture site after blood sampling is completed.

[0013] Second: In the utility model, the length of the first connecting rope is smaller than that of the second connecting rope and two chambers are arranged inside the inflation cylinder to ensure that the radial artery can continue to be pressed while the ulnar artery is loosened; the top surface of the finger plate is flush with the top surface of the base to ensure that the arm can be placed flat on the top surface of the base, thereby ensuring the comfort of the arm during blood collection; the size of the containing groove is larger than that of the finger plate to ensure that the finger plate has sufficient room for movement; the arc-shaped pressing plate can make the pressing plate fit the curve of the arm better when pressing the puncture position, thereby effectively improving the tightness of the pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the radial artery puncture and catheterization auxiliary device proposed by the utility model before the patient makes a fist.

[0015] Figure 2 This is a schematic diagram of the overall structure of the radial artery puncture and catheterization auxiliary device proposed by the utility model after the patient makes a fist.

[0016] Figure 3 The utility model is a schematic diagram of the left side cross-sectional structure of a radial artery puncture and catheterization auxiliary device.

[0017] Figure 4 This is a front view structural schematic diagram of a radial artery puncture and catheterization auxiliary device proposed by the utility model.

[0018] In the attached drawings: 1. base; 2. receiving groove; 3. finger plate; 4. first fixing ring; 5. first connecting rope; 6. piston; 7. inflator; 8. telescopic tube; 9. pressure plate; 10. slide groove; 11. support frame; 12. limiter; 13. second fixing ring; 14. timer; 15. anti-slip pad; 16. second connecting rope. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0021] The utility model discloses a radial artery puncture and catheterization auxiliary device which is mainly used in the scenario where the existing device does not have the function of performing a modified Allen test on the patient's collateral circulation before puncture and it is not convenient to effectively stop bleeding at the blood sampling site after blood sampling is completed.

[0022] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A radial artery puncture and catheterization auxiliary device includes a base 1, a containing groove 2 is opened at the top of the base 1, a finger plate 3 is rotatably connected to the inner wall of the containing groove 2, a first fixing ring 4 is fixedly connected to the top of the finger plate 3, a first connecting rope 5 is fixedly connected to the left side of the finger plate 3, and a second connecting rope 16 is fixedly connected to the right side of the finger plate 3. The first connecting rope 5 and the second connecting rope 16 are fixedly connected to a piston 6 at one end away from the finger plate 3, an inflating cylinder 7 is sleeved on the surface of the piston 6, two telescopic tubes 8 are fixedly connected to the bottom of the inflating cylinder 7, and a pressing plate 9 is fixedly connected to the bottom of the telescopic tube 8.

[0023] In this solution, the patient's fingers are first fixed by the first fixing ring 4, and after the fixation is completed, the patient is told to make a fist. During this process, as the fingers bend, the finger plate 3 will turn around the inner walls on the left and right sides of the receiving groove 2 toward the patient. Figure 2 As shown, when the finger plate 3 is rotated to be perpendicular to the bottom end of the base 1, the first connecting rope 5 and the second connecting rope 16 will shrink and the front end of the finger plate 3 will contact the piston 6. As the finger plate 3 continues to rotate, the piston 6 will move forward along the inflation tube 7 to inflate the telescopic tube 8. As the amount of inflation increases, the telescopic tube 8 will unfold and push the pressure plate 9 to move downward until the two pressure plates 9 are firmly against the patient's ulnar artery and radial artery respectively. After a few seconds, the patient is advised to slowly loosen his fist. During this process, as the fingers are straightened, the finger plate 3 will slowly return to the receiving groove 2. When the finger plate 3 is rotated to be perpendicular to the bottom end of the base 1, the first connecting rope 5 will be straightened and the second connecting rope 16 will still be partially bent. At this time, pay attention to the congestion of the patient's palm. As the finger plate 3 is rotated to be perpendicular to the bottom end of the base 1, the first connecting rope 5 will be straightened and the second connecting rope 16 will still be partially bent. At this time, pay attention to the congestion of the patient's palm. Continuing to rotate the piston 6 will move backward along the inflation tube 7 to evacuate the telescopic tube 8. As the amount of inflation decreases, the telescopic tube 8 will shrink and drive the pressure plate 9 to move upward until the pressure plate 9 is away from the patient's ulnar artery and radial artery in turn. When the patient feels that the pressure plate 9 no longer compresses the ulnar artery, he needs to temporarily stop loosening his fist. At this time, pay attention to the congestion of the patient's palm and compare it with the observation result just now. If the palm recovers redness in a shorter time, it means that the blood circulation is good and it is suitable for puncture. At this point, the modified Allen test for checking the collateral circulation is completed. After the puncture is completed, tell the patient to make a fist. Through the above steps, the pressure plate 9 can press the medical cotton placed just above the radial artery puncture site, so that the patient's puncture site can be effectively stopped.

[0024] The length of the first connecting rope 5 is smaller than that of the second connecting rope 16 and two chambers are arranged inside the inflation tube 7 to ensure that the radial artery can be pressed while the ulnar artery is released.

[0025] Furthermore, the top surface of the finger plate 3 is flush with the top surface of the base 1 to ensure that the arm can be placed flat on the top surface of the base 1, thereby ensuring the comfort of the arm during blood collection. The size of the receiving groove 2 is larger than the size of the finger plate 3 to ensure that the finger plate 3 has sufficient space for movement. The arc-shaped pressing plate 9 can make the pressing plate 9 fit the curve of the arm better when pressing the puncture position, thereby effectively improving the tightness of the pressing.

[0026] Reference Figure 2 In a preferred embodiment, two slide grooves 10 are provided at the top of the base 1 at the front end of the containing groove 2, and a support frame 11 is slidably connected in the slide groove 10. The inner wall of the support frame 11 is fixedly connected to the top of the pressure plate 9, and the left and right sides of the support frame 11 are fixedly connected to limit members 12.

[0027] After the modified Allen test, the patient will be punctured according to the actual situation. At this time, the bolts on the left and right sides of the limiter 12 are loosened and the support frame 11 is pulled backward so that it moves backward along the slide groove 10 until it is away from the arm, thereby preventing the support frame 11 from blocking the puncture. After the puncture is completed, the support frame 11 is pulled forward so that it moves forward along the slide groove 10 until it is directly above the puncture site, and then the bolts are tightened to fix the support frame 11, thereby preparing for subsequent hemostasis.

[0028] Reference Figure 1 and Figure 2 The top of the base 1 is located at the front end of the slide groove 10 and is fixedly connected to a second fixing ring 13 , the top of the base 1 is located at the rear end of the fingerboard 3 and is fixedly connected to a timer 14 , and the bottom of the base 1 is fixedly connected to an anti-slip pad 15 .

[0029] By setting the second fixing ring 13, the patient's wrist can be fixed, so as to prevent the patient's arm from being dislocated due to external force and other factors, resulting in puncture failure, and effectively improve the success rate of blood collection. By setting the timer 14, the medical staff can be reminded when the preset time is reached, which is beneficial to improve work efficiency. By setting the anti-slip pad 15, the friction between the device and the placement surface can be increased, so as to prevent the device from being displaced due to external force and other factors during use, which is beneficial to improve the success rate of blood collection.

[0030] The above are only preferred specific implementations of the utility model, but the protection scope of the utility model is not limited to them. The replacement can be a replacement of part of the structure, device, method steps, or a complete technical solution. Equivalent replacement or changes based on the technical solution of the utility model and its utility model concept should be included in the protection scope of the utility model.

Claims

1. A radial artery puncture and catheterization auxiliary device, comprising a base (1), characterized in that: The top of the base (1) is provided with a containing groove (2), the inner wall of the containing groove (2) is rotatably connected with a finger plate (3), the top of the finger plate (3) is fixedly connected with a first fixing ring (4), the left side of the finger plate (3) is fixedly connected with a first connecting rope (5), the right side of the finger plate (3) is fixedly connected with a second connecting rope (16), the first connecting rope (5) and the second connecting rope (16) are fixedly connected with a piston (6) at one end away from the finger plate (3), the surface of the piston (6) is provided with an inflating cylinder (7), the bottom end of the inflating cylinder (7) is fixedly connected with two telescopic tubes (8), and the bottom end of the telescopic tube (8) is fixedly connected with a pressure plate (9).

2. A radial artery puncture and catheterization auxiliary device according to claim 1, characterized in that: The length of the first connecting rope (5) is smaller than the length of the second connecting rope (16), two chambers are arranged inside the inflation cylinder (7), and the second connecting rope (16) is made of elastic material.

3. A radial artery puncture and catheterization auxiliary device according to claim 1, characterized in that: The top surface of the finger plate (3) is flush with the top surface of the base (1), the size of the receiving groove (2) is larger than the size of the finger plate (3), and the pressing plate (9) is arc-shaped.

4. A radial artery puncture and catheterization auxiliary device according to claim 1, characterized in that: The top of the base (1) is located at the front end of the containing groove (2) and has two slide grooves (10). A support frame (11) is slidably connected in the slide groove (10). The inner wall of the support frame (11) is fixedly connected to the top of the pressure plate (9). The left and right sides of the support frame (11) are fixedly connected to limiting members (12).

5. A radial artery puncture and catheterization auxiliary device according to claim 4, characterized in that: The top end of the base (1) is located at the front end of the slide groove (10) and is fixedly connected to a second fixing ring (13).

6. A radial artery puncture and catheterization auxiliary device according to claim 1, characterized in that: The top end of the base (1) is located at the rear end of the fingerboard (3) and is fixedly connected to a timer (14).

7. A radial artery puncture and catheterization auxiliary device according to claim 1, characterized in that: An anti-slip pad (15) is fixedly connected to the bottom end of the base (1).

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