Vascular surgical wristband

By designing a vascular surgery wristband that combines a PPG sensor and a pressure cushion, pressure-free blood flow signal acquisition and comfortable wearing are achieved. This solves the problems of existing wristbands being unable to monitor in real time and causing discomfort when untying them, thus improving the reliability of blood flow monitoring and patient comfort.

CN224292009UActive Publication Date: 2026-05-29THE SECOND AFFILIATED HOSPITAL TO NANCHANG UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
THE SECOND AFFILIATED HOSPITAL TO NANCHANG UNIV
Filing Date
2025-04-09
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing medical wristbands cannot monitor the physiological parameters of vascular surgery patients in real time, and traditional blood flow detection devices require frequent unbundling, leading to discomfort and discontinuous data.

Method used

A vascular surgery wristband was designed, which uses a wristband body and symmetrically distributed PPG sensors and pressure buffer pads, combined with a magnetic connection structure, to achieve pressure-free blood flow signal acquisition, which is processed by an ADPD1080 chip, and is equipped with ventilation holes and an adjustable tightness structure.

Benefits of technology

It enables reliable monitoring of blood flow signals without pressure, ensuring data continuity and patient comfort, reducing sweat buildup, and improving the stability and ease of information recognition of the wristband.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of vascular surgery medical care wrist strap, including wrist strap body, the both ends of wrist strap body are detachably connected, the center of wrist strap body is detachably connected with blood flow monitoring component, the blood flow monitoring component includes at least 2 PPG sensors and pressure buffer pad of symmetrical distribution, the pressure buffer pad is arranged at the bottom end of PPG sensor, the PPG sensor is adhered to skin by pressure buffer pad by buffer pad but does not compress blood vessel. The utility model is combined with wrist strap body, at least 2 PPG sensors and pressure buffer pad and the like structure of symmetrical distribution, avoid the compression of traditional finger clamp type probe to blood vessel, ensure that blood flow signal is real and reliable, and the detection of the above-mentioned blood flow signal can help medical staff to judge whether patient has thrombosis risk in time. The structure of pressure buffer pad is arranged, can avoid PPG sensor to compress patient skin when using, increase the comfort degree of medical care wrist strap in long-term wearing process.
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Description

Technical Field

[0001] This utility model relates to the field of vascular surgical auxiliary equipment technology, specifically to a vascular surgical medical wristband. Background Technology

[0002] Existing medical wristbands are mainly used for patient identification, while vascular surgery patients need continuous monitoring of limb blood flow (such as arterial pulsation, microcirculation perfusion, etc.) after surgery to prevent thrombosis or vasospasm.

[0003] Traditional monitoring methods have the following technical drawbacks:

[0004] 1. Ordinary medical wristbands only print basic patient information such as name and bed number, and cannot monitor physiological parameters in real time.

[0005] 2. Lack of Blood Flow Monitoring Module: Clinical practice relies on standalone blood flow monitors such as Doppler ultrasound, requiring frequent removal and re-attaching of the cuff, leading to patient discomfort and discontinuous data. Therefore, a vascular surgery wristband has become an urgent problem for society as a whole. Utility Model Content

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a vascular surgery medical wristband, including a wristband body, the two ends of the wristband body are detachably connected, and a blood flow monitoring component is detachably connected to the center of the wristband body. The blood flow monitoring component includes at least two symmetrically distributed PPG sensors and a pressure buffer pad. The pressure buffer pad is set at the bottom end of the PPG sensor. The PPG sensor fits the skin without compressing blood vessels through the pressure buffer pad.

[0007] Furthermore, the PPG sensor employs two symmetrically arranged reflective photoelectric sensors to acquire subcutaneous blood flow fluctuation signals. The PPG sensor is electrically connected to a signal processing module, which integrates an ADPD1080 chip to process the data acquired by the PPG sensor.

[0008] Furthermore, the pressure cushion is a honeycomb hollow cushion.

[0009] Furthermore, a magnetic mounting base is provided at the center of the wristband body, and a magnetic connection part is provided at the bottom of the PPG sensor. The PPG sensor is attracted to the magnetic mounting base through the magnetic connection part.

[0010] Furthermore, the magnetic mounting base is provided with mounting holes that mate with the magnetic mounting base.

[0011] The advantages of the utility model compared to the prior art are:

[0012] This invention combines a wristband body, at least two symmetrically distributed PPG sensors, and a pressure buffer pad to avoid the pressure on blood vessels caused by traditional finger clip probes, ensuring reliable blood flow signals. The detection of these blood flow signals helps medical personnel promptly determine if a patient is at risk of thrombosis. The pressure buffer pad design prevents the PPG sensors from compressing the patient's skin during use, increasing the comfort of the medical wristband during long-term wear.

[0013] This invention employs a structure with multiple ventilation holes, which increases the breathability of the medical wristband during prolonged wear and prevents sweat buildup. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a vascular surgery wristband according to the present invention;

[0015] Figure 2 This is an exploded view of a vascular surgery wristband according to the present invention. Figure 1 ;

[0016] Figure 3 This is an exploded view of a vascular surgery wristband according to the present invention. Figure 2 ;

[0017] Figure 4 This is a partial schematic diagram of a vascular surgery wristband according to the present invention.

[0018] The components include: 1. Wristband body; 2a. PPG sensor; 2b. Pressure buffer pad; 3. Magnetic mounting base; 4. Magnetic connection part; 5. Mounting hole; 6. Ventilation hole; 7. Slot; 8. Fixing hole; 9. Spherical protrusion; 10. Pressing part; 11. Mating groove. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] The present invention will be described in detail with reference to the accompanying drawings.

[0021] In a specific implementation, this utility model provides a vascular surgery wristband, including a wristband body 1. The two ends of the wristband body 1 are detachably connected, and a blood flow monitoring component is detachably connected to the center of the wristband body 1. The blood flow monitoring component includes at least two symmetrically distributed PPG sensors 2a and a pressure buffer pad 2b. The pressure buffer pad 2b is located at the bottom end of the PPG sensor 2a. The PPG sensor 2a fits the skin without compressing blood vessels through the pressure buffer pad 2b.

[0022] Example:

[0023] Each medical wristband contains the patient's identification information so that medical staff can identify the patient in a timely manner.

[0024] In use, the blood flow monitoring component of this invention includes at least two symmetrically distributed PPG sensors 2a and a pressure buffer pad 2b. The PPG sensor 2a adopts a dual-wavelength (530nm / 880nm) reflective photoelectric sensor to avoid the compression of blood vessels by traditional finger clip probes (actual pressure ≤15mmHg), ensuring that the blood flow signal is real and reliable.

[0025] The PPG sensor 2a conforms to the skin without compressing blood vessels through the pressure buffer pad 2b. This structure facilitates the long-term wearing of the medical wristband and increases the patient's comfort during extended periods of wear.

[0026] The PPG sensor 2a employs two symmetrically arranged reflective photoelectric sensors to acquire subcutaneous blood flow fluctuation signals. The dual PPG sensors combined with the ADPD1080 chip achieve a signal-to-noise ratio of 85dB. The PPG sensors 2a are electrically connected to a signal processing module, which integrates the ADPD1080 chip, to process the data acquired by the PPG sensors. The two PPG sensors 2a transmit the acquired blood flow signals to the integrated ADPD1080 chip, enabling accurate acquisition and analysis of the patient's blood flow signals. The processed data is then displayed on an electronic screen. This blood flow signal detection helps medical personnel promptly determine if a patient has a risk of thrombosis.

[0027] To avoid the PPG sensor from putting pressure on the patient's skin, the pressure cushion 2b is a honeycomb hollow cushion.

[0028] To facilitate the disassembly and installation of the blood flow monitoring module, a magnetic mounting base 3 is provided at the center of the wristband body 1, and a magnetic connection part 4 is provided at the bottom of the PPG sensor 2a. The PPG sensor 2a is attracted to the magnetic mounting base 3 through the magnetic connection part 4. The magnetic structure facilitates installation and disassembly, making it practical and convenient.

[0029] As a further explanation of this utility model, the magnetic mounting base 3 is provided with mounting holes 5 that cooperate with the magnetic mounting base 3.

[0030] As a further explanation of this utility model, the PPG sensor 2a is provided with a plurality of ventilation holes 6 around its periphery. The plurality of ventilation holes 6 are arranged in a circumferential array structure to allow ventilation at the wrist position and prevent sweating. The above-mentioned annular ventilation hole structure and the annular ventilation array reduce ambient light interference to 0.15 lux.

[0031] To facilitate adjustment of the tightness of the medical wristband, one end of the wristband body 1 is provided with multiple fixing holes 8, and the other end is provided with a spherical protrusion 9 that mates with the fixing holes 8. A pressing part 10 is provided at the end of the wristband body 1 near the spherical protrusion 9, and a mating groove 11 is formed on the pressing part 10 to mate with the spherical protrusion 9. The wristband body is worn on the patient's wrist, and the tightness of the wristband body 1 is adjusted by engaging the fixing holes 8 with the spherical protrusion 9. After the tightness is adjusted, the mating groove 11 on the pressing part 10 is used to lock and fix the wristband to the spherical protrusion 9. This structure increases the stability of the medical wristband when the patient uses it, preventing slippage due to unstable fixation during use.

[0032] To facilitate quick identification of patient information by medical staff, a card slot 7 is provided on the rear side of the wristband body 1 for placing patient information cards.

[0033] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A vascular surgery wristband, comprising a wristband body (1), wherein the two ends of the wristband body (1) are detachably connected, characterized in that: The wristband body (1) is detachably connected to a blood flow monitoring component. The blood flow monitoring component includes at least two symmetrically distributed PPG sensors (2a) and a pressure buffer pad (2b). The pressure buffer pad (2b) is located at the bottom end of the PPG sensor (2a). The PPG sensor (2a) fits the skin without compressing blood vessels through the pressure buffer pad (2b).

2. The vascular surgery wristband according to claim 1, characterized in that: The PPG sensor (2a) employs two symmetrically arranged reflective photoelectric sensors for acquiring subcutaneous blood flow fluctuation signals. The PPG sensor (2a) is electrically connected to a signal processing module, which integrates an ADPD1080 chip for processing the data acquired by the PPG sensor.

3. The vascular surgery wristband according to claim 1, characterized in that: The pressure cushioning pad (2b) is a honeycomb hollow cushioning pad.

4. The vascular surgery wristband according to claim 1, characterized in that: The wristband body (1) has a magnetic mounting base (3) at its center, and the PPG sensor (2a) has a magnetic connection part (4) at its bottom end. The PPG sensor (2a) is attracted to the magnetic mounting base (3) through the magnetic connection part (4).

5. A vascular surgery wristband according to claim 4, characterized in that: The magnetic mounting base (3) is provided with mounting holes (5) that cooperate with the magnetic mounting base (3).

6. A vascular surgery wristband according to claim 1, characterized in that: The PPG sensor (2a) has multiple ventilation holes (6) around its periphery, which are arranged in a circular array to allow for ventilation at the wrist position and prevent sweating.

7. A vascular surgery wristband according to claim 1, characterized in that: The wristband body (1) has a plurality of fixing holes (8) at one end and a spherical protrusion (9) that mates with the fixing holes (8) at the other end. The wristband body (1) has a pressing part (10) at one end near the spherical protrusion (9), and a mating groove (11) that mates with the spherical protrusion (9) is provided on the pressing part (10).

8. A vascular surgery wristband according to claim 1, characterized in that: The wristband body (1) has a card slot (7) on its rear side for placing patient information cards.