Auxiliary device for preventing hematoma after radial artery intervention operation
By designing an auxiliary device for radial artery interventional procedures with a spring and a pressure sensor, patients were able to perform voluntary intermittent palm opening and closing movements, which solved the problem of blood circulation in the hand after interventional procedures, reduced bleeding and edema, and improved the practicality and safety of the device.
Patent Information
- Application Number
- CN202520548235.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-27
AI Technical Summary
Patients currently undergoing radial artery interventional procedures experience problems such as slowed blood flow in the hand, decreased skin temperature, darkened skin color, swelling, and pain. Furthermore, traditional opening and closing techniques lack stability and practicality, easily leading to bleeding and edema.
Design an auxiliary device that includes a palm grip and a finger grip, which uses spring rebound force to achieve intermittent opening and closing movements, and is equipped with a pressure sensor and a warning light to ensure automatic reminders and fixation for the patient during the compression hemostasis cycle.
It effectively prevents bleeding and edema, reduces the need for nurse monitoring, and improves the practicality and safety of patients' self-exercise.
Smart Images

Figure CN223831719U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of radial artery surgery technology, specifically to an auxiliary device for preventing hematoma after radial artery intervention. Background Technology
[0002] Radial artery compressors are commonly used in interventional procedures that block the radial artery. Typically, the compressor is released between 24 and 72 hours post-procedure, with the nurse gradually reducing the balloon pressure based on the recovery progress.
[0003] After extensive searching, a Chinese utility model patent (publication number CN221535568U) was found: a grip strengthener to promote recovery after radial artery surgery. However, the puncture site during interventional surgery can experience slowed blood flow in the hand due to hemostatic pressure, leading to decreased skin temperature, darkening of skin color, hand swelling, numbness, and occasionally pain and discomfort. The current main solution is to have the patient hold a solid, soft ball about the size of a fist, allowing the patient to perform opening and closing movements within their tolerance range to maintain unobstructed blood flow around the radial artery and reduce bleeding and edema at the puncture site.
[0004] However, this opening and closing technique has significant drawbacks. Firstly, some patients are afraid of pain and lack a clear understanding of how long to perform the opening and closing motion and how long each session should last. Nurses also cannot effectively remind and supervise each patient. Secondly, the solid soft ball cannot be fixed to the patient's hand and is very easy to fall off when the patient experiences numbness in their hand. Therefore, it has low practicality and cannot enable patients to perform effective exercises. Utility Model Content
[0005] The purpose of this invention is to provide an auxiliary device for preventing hematoma after radial artery intervention. It helps the patient to perform the opening and closing motion of the palm intermittently during the compression hemostasis cycle, so that the patient does not need to be reminded by the nurse, and at the same time avoids dropping the hand, thereby reducing the occurrence of hematoma.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary device for preventing hematoma after radial artery intervention, comprising a palm grip plate, a finger grip plate at the top of the palm grip plate, two springs symmetrically connected between the palm grip plate and the finger grip plate, a positioning rod welded to both ends of the palm grip plate, and a fixing ring welded to both ends of the finger grip plate and slidably connected through the positioning rod.
[0007] Preferably, a pressure sensor is attached to the side of the palm grip plate near the finger grip plate, a pressure plate for use with the pressure sensor is welded to the side of the finger grip plate near the palm grip plate, and a warning light for use with the pressure sensor is attached to the front of the palm grip plate.
[0008] Preferably, a limit block is welded to the end of the positioning rod away from the palm grip plate.
[0009] Preferably, both ends of the palm grip are fixedly connected with elastic straps, and the two elastic straps are fixedly connected with Velcro that is mutually adhesive.
[0010] Preferably, the finger grip plate has a finger groove on the side away from the palm grip plate.
[0011] Preferably, anti-slip pads are adhered to the sides of the palm grip and finger grip surfaces that are far from each other.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] This invention fixes the palm grip plate and finger grip plate in the palm of the hand. When the patient grips the palm grip plate and finger grip plate together with force, the spring rebounds and returns the grip plate to its original position. This allows the patient's hand to intermittently open and close, preventing the grip plate from falling out of the hand and thus providing effective exercise.
[0014] This invention utilizes a pressure plate that applies pressure to a pressure sensor when the patient presses on the palm or fingers of the pressure plate, causing a warning light to illuminate. When the patient stops pressing, the warning light stops flashing, allowing family members to easily notice and alert the patient without requiring nurses to constantly monitor the area, thus improving practicality. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a cross-sectional view of the structure of this utility model.
[0017] In the diagram: 1. Palm grip; 2. Finger grip; 3. Spring; 4. Positioning rod; 5. Fixing ring; 6. Pressure plate; 7. Pressure sensor; 8. Warning light; 9. Elastic strap; 10. Velcro; 11. Finger groove; 12. Anti-slip pad; 13. Limiting block. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Please see Figure 1 and Figure 2One embodiment of this utility model includes a palm grip plate 1, with a finger grip plate 2 at the top of the palm grip plate 1. Two springs 3 are symmetrically bolted between the palm grip plate 1 and the finger grip plate 2. Positioning rods 4 are welded to both ends of the palm grip plate 1, and fixing rings 5, which are slidably connected to the positioning rods 4, are welded to both ends of the finger grip plate 2. By fixing the palm grip plate 1 and the finger grip plate 2 in the palm, when the patient forcefully pulls the palm grip plate 1 and the finger grip plate 2 together, the springs 3 will return them to their original positions and open them. This allows the patient's palm to intermittently open and close, preventing it from falling out of the hand, thus providing effective exercise.
[0020] Furthermore, a limiting block 13 is welded to the end of the positioning rod 4 away from the palm grip plate 1. By setting the limiting block 13, the sliding distance of the positioning rod 4 can be limited, preventing the positioning rod 4 from sliding out of the interior of the fixing ring 5.
[0021] Furthermore, elastic straps 9 are fixedly connected to both ends of the palm grip plate 1, and Velcro 10 is fixedly connected between the two elastic straps 9. By wrapping the two elastic straps 9 around the patient's palm and then fixing them together with Velcro 10, the palm grip plate 1 and the finger grip plate 2 can be fixed inside the patient's palm.
[0022] Please see Figure 1 and Figure 2 In one embodiment of this utility model, a pressure sensor 7 is attached to the side of the palm grip plate 1 near the finger grip plate 2, and a pressure plate 6, which works in conjunction with the pressure sensor 7, is welded to the side of the finger grip plate 2 near the palm grip plate 1. An alarm light 8, which also works in conjunction with the pressure sensor 7, is attached to the front of the palm grip plate 1. When the patient presses the palm grip plate 1 and the finger grip plate 2, the pressure plate 6 applies pressure to the pressure sensor 7, causing the alarm light 8 to illuminate as a reminder. When the patient stops pressing, the alarm light 8 stops flashing, allowing family members to directly notice and remind the patient without requiring nurses to constantly monitor the area, thus improving practicality.
[0023] Furthermore, a finger groove 11 is provided on the side of the finger grip plate 2 away from the palm grip plate 1. By providing the finger groove 11, it is easy to lock the patient's four fingers inside the finger groove 11, thereby further improving stability and preventing them from slipping out of the palm.
[0024] Furthermore, anti-slip pads 12 are adhered to the opposite sides of the palm grip plate 1 and finger grip plate 2. The anti-slip pads 12 not only increase the friction for the patient to grip the palm grip plate 1 and finger grip plate 2, improving grip stability, but also allow the anti-slip pads 12 to be removed and replaced for easy disinfection and cleaning.
[0025] Working principle: First, the palm grip 1 and finger grip 2 are held in the palm, with the palm grip 1 inside the palm and the finger grip 2 at the base of the fingers. An elastic bandage 9 is wrapped around the patient's palm and secured with Velcro 10. Then, the patient presses the palm grip 1 and finger grip 2 with their fingers and palm respectively, overcoming the spring force of the spring 3, causing the palm grip 1 and finger grip 2 to adhere to each other. This causes the positioning rod 4 to slide inside the fixing ring 5, limiting the position of the palm grip 1 and finger grip 2. When the patient releases the pressure, the palm grip 1 and finger grip 2 are reset and opened by the rebound force of the spring 3, allowing the patient's palm to fully open and close.
[0026] Simultaneously, when the patient presses the palm grip plate 1 and finger grip plate 2 to make a palm opening and closing motion, the pressure plate 6 at the bottom of the finger grip plate 2 will approach the pressure sensor 7 and exert pressure on the pressure sensor 7. When the pressure sensor 7 is under pressure, the warning light 8 will light up to provide a reminder. In this way, as the patient continues to make the opening and closing motion, the warning light 8 can flash intermittently. When the patient stops due to pain, the warning light 8 will stop flashing, so that the patient's family can directly notice and remind them without the need for the nurse to constantly observe back and forth.
[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An auxiliary device for preventing hematoma after radial artery intervention, comprising a palm grip plate (1), characterized in that: The palm grip plate (1) is provided with a finger grip plate (2) at the top. Two springs (3) are symmetrically bolted between the palm grip plate (1) and the finger grip plate (2). Positioning rods (4) are welded to both ends of the palm grip plate (1). Fixed rings (5) that are slidably connected to the positioning rods (4) are welded to both ends of the finger grip plate (2). A pressure sensor (7) is attached to the side of the palm grip (1) near the finger grip (2). A pressure plate (6) for use with the pressure sensor (7) is welded to the side of the finger grip (2) near the palm grip (1). A warning light (8) for use with the pressure sensor (7) is attached to the front of the palm grip (1).
2. The auxiliary device for preventing hematoma after radial artery intervention according to claim 1, characterized in that: A limit block (13) is welded to the end of the positioning rod (4) away from the palm grip plate (1).
3. The auxiliary device for preventing hematoma after radial artery intervention according to claim 1, characterized in that: Both ends of the palm grip plate (1) are fixedly connected with elastic straps (9), and the two elastic straps (9) are fixedly connected with Velcro (10) that are glued to each other.
4. The auxiliary device for preventing hematoma after radial artery intervention according to claim 1, characterized in that: The finger grip plate (2) has a finger groove (11) on the side away from the palm grip plate (1).
5. The auxiliary device for preventing hematoma after radial artery intervention according to claim 1, characterized in that: Anti-slip pads (12) are glued to the sides of the palm grip (1) and finger grip (2) that are far apart from each other.
Citation Information
Patent Citations
Wrist developer for promoting postoperative recovery of radial artery
CN221535568U