An arterial blood vessel positioning and puncture device
Patent Information
- Application Number
- CN202611142072.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-30
- Publication Date
- 2026-10-09
AI Technical Summary
进针角度过大易穿透动脉后壁,角度过小则难以刺入血管;不同人员的操作手法、判断标准存在差异,难以形成统一的标准化操作流程,导致穿刺成功率、并发症发生率存在明显个体差异,不利于临床质量控制与技术推广,尤其在基层医疗机构,这种标准化缺失的问题更为突出
[0045]发明的有益效果是,能够精准定位、辅助控制角度、操作便捷、成本适宜、适配多场景的辅助装置,从根本上解决临床痛点、难点,填补现有技术与产品的空白,提升动脉穿刺的标准化、精准化水平,减轻医患负担,同时契合行业发展趋势,具备良好的临床应用价值与推广前景。
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Figure CN122874102A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical technology, and in particular to an arterial vessel localization and puncture device. Background Technology
[0002] Clinical arterial puncture relies primarily on the palpation of arterial pulsation by healthcare professionals for location. However, its accuracy is compromised by various factors. In obese or edematous patients, thick subcutaneous fat and tissue edema weaken the arterial pulsation, making accurate vessel location difficult. In patients with shock or hypotension, insufficient arterial filling and vessel collapse result in weak or absent pulsation, significantly increasing the difficulty of location. Elderly patients with hardened or tortuous blood vessels, and children with thin vessels, are also prone to location errors. Clinical statistics show that the success rate of traditional manual puncture is only 78% on the first attempt. Repeated punctures not only increase patient discomfort but also easily lead to complications such as vasospasm, hematoma (occurrence rate 8%), and pseudoaneurysms. Especially for critically ill patients, repeated punctures can delay emergency treatment and affect prognosis. Furthermore, junior healthcare professionals lack experience in arterial palpation, resulting in even lower accuracy. The margin for error for novice practitioners is extremely low, increasing clinical training costs and operational risks.
[0003] The angle of arterial puncture directly determines the success or failure of the puncture. Currently, it relies entirely on the nurse's clinical experience and judgment, lacking objective supporting evidence. An excessively large needle angle can easily penetrate the posterior wall of the artery, while an excessively small angle makes it difficult to puncture the blood vessel. Different personnel have different operating techniques and judgment standards, making it difficult to establish a unified standardized operating procedure. This results in significant individual differences in puncture success rate and complication rate, which is detrimental to clinical quality control and technology promotion. This lack of standardization is particularly prominent in primary healthcare institutions.
[0004] In emergency situations, patients are critically ill and have unstable vital signs, requiring rapid arterial puncture to monitor hemodynamics or administer medication. However, existing procedures are cumbersome and time-consuming, simple auxiliary devices have limited functions, and high-end devices are complex to operate, failing to meet the core requirements of "fast, accurate, and convenient" in emergency scenarios, which may delay the patient's treatment.
[0005] With the continuous development of medical technology, numerous studies and applications have been conducted both domestically and internationally regarding arterial puncture-assisted localization technologies and products. However, current technologies and products, both domestically and internationally, have many shortcomings in terms of functionality, adaptability, practicality, and accessibility, and cannot completely solve clinical pain points. The specific core issues are as follows:
[0006] (1) Insufficient positioning accuracy and poor adaptability
[0007] Traditional manual positioning relies entirely on experience, has low accuracy, and cannot be adapted to complex patients such as those with obesity, edema, or shock. Simple angle positioning frames cannot achieve vascular positioning and can only assist in controlling the angle, which is of no help to complex patients. Although ultrasound-assisted positioning can display blood vessels, the imaging effect is greatly affected by the performance of the equipment and the operator's proficiency. It is not accurate enough in locating deep or thin blood vessels and cannot provide simultaneous angle control.
[0008] (2) Single function and lack of integrated design
[0009] Existing auxiliary products are mostly fragmented and have limited functions: simple positioning frames can only control angles, and ultrasound positioning devices can only display blood vessels. In clinical practice, nurses need to prepare multiple devices at the same time, making the operation process cumbersome, increasing the workload of nursing staff, and reducing operational efficiency. Moreover, the functional fragmentation not only increases the use of consumables, but also raises the requirements for the operator's technical proficiency, which is not conducive to standardization and promotion, especially in primary medical institutions or emergency rescue scenarios.
[0010] Whether using traditional manual puncture or simple auxiliary devices and ultrasound-assisted positioning, all methods heavily rely on the operational experience and skills of medical staff, making it impossible to standardize the puncture procedure. Significant differences in the procedures performed by different medical personnel lead to unstable puncture success rates and complication rates, which is detrimental to clinical quality control.
[0011] Based on the above analysis, the existing solutions for arterial puncture assisted localization at home and abroad (including manual operation, simple auxiliary devices, ultrasound-assisted devices, etc.) all have significant shortcomings. They cannot completely solve clinical pain points and difficulties, nor can they meet unmet medical needs. Summary of the Invention
[0012] To solve the above-mentioned technical problems, the present invention provides an arterial vessel localization and puncture device.
[0013] This invention provides an arterial vessel localization and puncture device, comprising:
[0014] Wristbands that can fit the size of the patient's wrist;
[0015] A base mounted on the wristband for carrying the arterial vascular detector and needle insertion guide;
[0016] A needle guide component mounted on the base for guiding the angle at which the arterial puncture needle is inserted into the artery.
[0017] An artery vessel detector for detecting the location of an artery is installed at the bottom of the needle insertion guide component;
[0018] A limiting sleeve fitted onto the arterial puncture needle to restrict the depth of insertion;
[0019] During the movement of the wristband relative to the artery, the artery detector detects the pressure of the artery pulsation through one or more pressure-sensitive resistors, determines the location of the artery, and emits an audible / visual alert signal when the location of the artery is determined.
[0020] The needle guide component can rotate relative to the base to adjust the angle at which the arterial puncture needle enters the artery.
[0021] Preferably, the wristband includes:
[0022] A base mounting cavity is provided in the middle of the wristband and is used to mount the base.
[0023] A first joint portion is disposed on the left side of the base mounting cavity and used for fixing and installing the base, and a second joint portion is disposed on the right side of the base mounting cavity and used for fixing and installing the base;
[0024] A first wristband is provided at the upper end of the base mounting cavity and a second wristband is provided at the lower end of the base mounting cavity;
[0025] A wristband connecting component is provided in the first wristband and / or the second wristband for adapting and fixing the wristband to the patient's wrist according to the size of the patient's wrist.
[0026] Preferably, the base includes:
[0027] A needle guide component mounting cavity is provided in the middle of the base and is used to install the needle guide component.
[0028] A first base joint portion is disposed on the left side of the insertion cavity of the needle guide component and is used for fixed connection with the first joint portion; and a second base joint portion is disposed on the right side of the insertion cavity of the needle guide component and is used for fixed connection with the second joint portion.
[0029] A first base beam is disposed at the upper end of the insertion cavity of the needle guide component and connected to the first base joint and the second base joint respectively, and a second base beam is disposed at the lower end of the insertion cavity of the needle guide component and connected to the first base joint and the second base joint respectively.
[0030] Preferably, the needle guide component includes:
[0031] The needle guide body is located in the middle part of the base;
[0032] A needle guide hole is located in the middle of the needle guide body and is used to guide the angle at which the arterial puncture needle is inserted into the artery.
[0033] An adjusting component is provided at the upper end of the first base beam and is used to adjust the angle of the needle guide hole;
[0034] A first connecting rod is fixedly disposed at one end of the needle guide base and connected to the adjusting component via the first base beam;
[0035] A second connecting rod is fixedly installed at the other end of the needle guide base and connected to the second base beam.
[0036] Preferably, the needle guide base is a cuboid; the needle guide hole is an oblique through hole, and the angle between the axis of the needle guide hole and the upper surface of the needle guide base is 30 degrees or 15 degrees.
[0037] Preferably, the arterial vascular detector comprises:
[0038] The detection module is used to detect the patient's arterial blood vessels in real time during the movement of the wristband relative to the arterial blood vessels, and to acquire multiple vibration waveform signals located in and around the arterial blood vessels.
[0039] The signal acquisition module is used to preprocess each vibration waveform signal output by the detection module, identify and collect valid vibration waveform signals that conform to the characteristics of arterial pulsation;
[0040] The signal threshold determination module is used to compare and process the amplitudes of all valid vibration waveform signals collected by the sample collection module, select the valid vibration waveform signal with the largest amplitude, and use the valid vibration waveform signal with the largest amplitude as the arterial blood vessel threshold signal.
[0041] The signal comparison module is used to re-detect the patient's arterial blood vessels through the detection module and compare each acquired vibration waveform signal with the arterial blood vessel threshold signal.
[0042] An artery vessel determination module is used to determine the location of an artery vessel based on the comparison result output by the signal comparison module.
[0043] The prompting module is used to determine the location of the artery output by the module based on the artery and to issue an audible / visual prompt signal.
[0044] Preferably, the artery vessel determination module is specifically used to take the location of the vibration waveform signal that is the same as the artery vessel threshold signal detected again by the detection module as the artery vessel location.
[0045] The beneficial effects of the invention are that it provides an auxiliary device that can accurately locate, assist in controlling the angle, is easy to operate, is cost-effective, and is adaptable to multiple scenarios. It fundamentally solves clinical pain points and difficulties, fills the gaps in existing technologies and products, improves the standardization and precision of arterial puncture, reduces the burden on doctors and patients, and is in line with industry development trends. It has good clinical application value and promotion prospects. Attached Figure Description
[0046] Figure 1 This is a schematic diagram of the wristband structure of the arterial vessel positioning and puncture device provided by the present invention;
[0047] Figure 2 This is a side view of the wristband of the arterial vessel positioning and puncture device provided by the present invention;
[0048] Figure 3 This is a schematic diagram of the base structure of the arterial vessel positioning and puncture device provided by the present invention;
[0049] Figure 4 This is a schematic diagram of the needle insertion guide component of the arterial vessel positioning and puncture device provided by the present invention;
[0050] Figure 5 This is a schematic diagram showing the combination of the wristband, base, and needle insertion guide component of the arterial vessel positioning and puncture device provided by the present invention;
[0051] Figure 6 This is a cross-sectional view of the needle insertion guide section of the arterial vessel positioning and puncture device provided by the present invention (AA).
[0052] Figure 7 This is a schematic diagram of the arterial blood vessel detector module of the arterial blood vessel positioning and puncture device provided by the present invention;
[0053] Figure 8 This is a schematic diagram of one of the structures of the limiting sleeve for restricting the needle insertion depth of the arterial vessel positioning and puncture device provided by the present invention;
[0054] Figure 9 This is a second schematic diagram of the structure of the limiting sleeve for restricting the needle insertion depth of the arterial vessel positioning and puncture device provided by the present invention. Detailed Implementation
[0055] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In the following description, suffixes such as "module," "part," or "unit" used to denote elements are used only for the purpose of illustrative purposes and have no inherent meaning. Therefore, "module," "part," or "unit" may be used interchangeably.
[0056] Example 1
[0057] The arterial vessel localization and puncture device provided by this invention is a lightweight and portable structure, made of medical-grade materials. It is lightweight and compact (wristband design), making it easy to carry in various scenarios such as emergency rooms, internal medicine, surgery, obstetrics and gynecology, pediatrics, intensive care units, and operating rooms. The specific design is as follows: Figures 1-7 As shown, it includes:
[0058] Wristband 1 that can fit the size of the patient's wrist;
[0059] A base 2 mounted on the wristband 1 for supporting the arterial blood vessel detector 4 and the needle insertion guide component 3;
[0060] A needle guide component 3, mounted on the base 2, is used to guide the angle at which the arterial puncture needle 5 is inserted into the artery.
[0061] An arterial vessel detector 4 for detecting the location of an artery is installed at the bottom of the needle insertion guide component 3;
[0062] A limiting sleeve 6 is fitted onto the arterial puncture needle 5 to limit the depth of needle insertion;
[0063] During the movement of the wristband 1 relative to the artery, the artery detector 4 detects the pressure of the artery pulsation through one or more pressure-sensitive resistors, determines the position of the artery, and emits an audible / visual alert signal when the position of the artery is determined.
[0064] The needle guide component can rotate relative to the base 2 to adjust the angle at which the arterial puncture needle 5 enters the arterial vessel.
[0065] Furthermore, such as Figure 1 As shown, the wristband 1 includes:
[0066] A base mounting cavity 11 is provided in the middle part of the wristband 1 and is used to install the base 2;
[0067] A first joint 12, which is disposed on the left side of the base mounting cavity 11 and is used for fixing the base 2, and a second joint 13, which is disposed on the right side of the base mounting cavity 11 and is used for fixing the base 2, are also provided.
[0068] A first wristband 14 is provided at the upper end of the base mounting cavity 11 and a second wristband 15 is provided at the lower end of the base mounting cavity 11;
[0069] A wristband connecting component 16 is provided in the first wristband 14 and / or the second wristband 15 for adapting and fixing the wristband 1 to the patient's wrist according to the size of the patient's wrist.
[0070] It should be noted that the first connecting part 12 of the wristband 1 is provided with double-sided adhesive, and the first adhesive side of the double-sided adhesive is attached to the first connecting part 12. The second adhesive side is provided with an adhesive release layer. When the first connecting part 12 needs to be attached to the first base connecting part 21 of the base 2, the adhesive release layer on the second adhesive side is peeled off so that the first connecting part 12 is attached to the first base connecting part 21. The second connecting part 13 of the wristband 1 is also provided with double-sided adhesive, which will not be described in detail here.
[0071] The wristband 1 is made of medical silicone or other materials and can be fixedly installed on the wristband 1 at the position of the needle guide component 3 through the wristband connecting component 16 to prevent the device from shifting during operation.
[0072] Furthermore, such as Figure 2 As shown, the base 2 includes:
[0073] A needle guide component mounting cavity 25 is provided in the middle of the base 2 and is used to install the needle guide component.
[0074] A first base joint 21 is disposed on the left side of the needle insertion guide cavity 25 and is used for fixed connection with the first joint 12; and a second base joint 22 is disposed on the right side of the needle insertion guide cavity 25 and is used for fixed connection with the second joint 13.
[0075] A first base beam 23 is disposed at the upper end of the needle insertion guide cavity 25 and connected to the first base joint 21 and the second base joint 22 respectively, and a second base beam 24 is disposed at the lower end of the needle insertion guide cavity 25 and connected to the first base joint 21 and the second base joint 22 respectively.
[0076] Furthermore, such as Figure 3 As shown, the needle guide component 3 includes:
[0077] Needle guide body 34 is disposed in the middle part of the base 2;
[0078] The needle guide hole 35 is located in the middle of the needle guide base 34 and is used to guide the angle of the arterial puncture needle 5 into the arterial vessel.
[0079] An adjusting component 31 is provided on the upper end of the first base beam 23 and is used to adjust the angle of the needle guide hole 35;
[0080] A first connecting rod 32 is fixedly disposed at one end of the needle guide base 34 and connected to the adjusting component 31 via the first base beam 23;
[0081] A second connecting rod 33 is fixedly installed at the other end of the needle guide base 34 and connected to the second base beam 24.
[0082] The needle insertion guide hole 35 is compatible with commonly used clinical arterial puncture needles (18G, 20G), and can achieve an angle adjustment of 15°-45°. Figure 6 The diagram shows a cross-sectional view of the needle insertion guide component 3 (AA); wherein, the adjusting component 31 is fixed by a slot after the medical staff has adjusted the angle to prevent angle deviation during puncture; the medical staff can precisely adjust the angle according to the patient's blood vessel depth and body type, for example, for obese patients with deeper blood vessels, it can be adjusted to 30°-45°, such as... Figure 6 As shown in (c), the blood vessels in pediatric patients are more superficial, and the angle can be adjusted to 15°-25°. Figure 6 As shown in (b).
[0083] The needle guide base 34 is a cuboid with a height or thickness of about 5 mm. The needle guide hole 35 is an oblique through hole, and the angle between the axis of the needle guide hole 35 and the upper surface of the needle guide base 34 is 30 degrees or 15 degrees.
[0084] Furthermore, such as Figure 7 As shown, the arterial vascular detector 4 includes:
[0085] The detection module 401 is used to detect the patient's arterial blood vessels in real time during the movement of the wristband 1 relative to the arterial blood vessels, and to acquire multiple vibration waveform signals located in and around the arterial blood vessels.
[0086] The signal collection module 402 is used to preprocess each vibration waveform signal output by the detection module 401, identify and collect valid vibration waveform signals that conform to the characteristics of arterial pulsation.
[0087] The signal threshold determination module 403 is used to compare and process the amplitudes of all valid vibration waveform signals collected by the sample collection module 402, select the valid vibration waveform signal with the largest amplitude, and use the valid vibration waveform signal with the largest amplitude as the arterial blood vessel threshold signal.
[0088] The artery vessel determination module 404 is used to re-detect the patient's artery vessels through the detection module 401, compare each acquired vibration waveform signal with the artery vessel threshold signal, and determine the location of the artery vessel based on the comparison results.
[0089] The prompt module 405 is used to issue an audible / visual prompt signal based on the location of the artery output by the artery determination module 404.
[0090] The detection module 401 is a pressure sensor probe that can fit against the skin surface to avoid compressing blood vessels and affecting pulsation.
[0091] The arterial vascular detector 4 is detachably mounted on the needle insertion guide base 34. To ensure the safety of the needle insertion guide hole 35 on the needle insertion guide base 34, the needle insertion guide base 34 can be made of disposable material or can be reused multiple times, but it must be soaked in a safe solution for disinfection before each use to ensure safety.
[0092] Specifically, the artery vessel determination module 404 is used to take the position of the vibration waveform signal that is the same as the artery vessel threshold signal detected again by the detection module 401 as the artery vessel position.
[0093] Example 2
[0094] The present invention also provides an arterial vessel positioning and puncture system, comprising: the arterial vessel positioning and puncture device of Embodiment 1, an arterial vessel puncture needle 5, and a limiting sleeve 6 fitted on the arterial vessel puncture needle 5 to limit the depth of insertion, such as... Figures 8-9 As shown.
[0095] Furthermore, one end of the limiting sleeve 6 has an internal thread on its inner wall, which is rotated and fixedly connected to the external thread 51 of a predetermined length on the outer wall of the outer sheath of the arterial puncture needle 5. This is useful for cases where the blood vessels of slender or pediatric patients are relatively shallow. Figure 8 As shown, the number of rotations between the limiting sleeve 6 and the external thread 51 of a set length on the outer wall of the outer sheath of the arterial puncture needle 5 is relatively small, thus limiting the depth of the arterial puncture needle 5 by the limiting sleeve 6; when the blood vessels of obese patients are deeper, such as Figure 9 As shown, the number of rotations between the limiting sleeve 6 and the external thread 51 of a set length provided on the outer wall of the outer sheath of the arterial puncture needle 5 is relatively large, thereby limiting the depth of the arterial puncture needle 5 by the limiting sleeve 6.
[0096] Working principle: When the arterial puncture needle 5 is advanced through the needle guide hole 35 of the needle guide component 3, when the limiting sleeve 6 reaches the position of the needle guide hole 35, it cannot be advanced further to avoid the needle being inserted too deeply and damaging the tissue around the blood vessel, or the needle being inserted too shallowly and failing to reach the blood vessel lumen; the limiting sleeve 6 can be adjusted from 0.5-3cm to adapt to arterial vessels of different depths.
[0097] The arterial puncture needle 5 is provided with a scale. The insertion depth of the arterial puncture needle 5 is adjusted by rotating the number of rotations between the internal thread of the rotating limiting sleeve 6 and the external thread 51 of a set length provided on the outer wall of the outer sheath of the arterial puncture needle 5.
[0098] The wristband 1 and arterial vascular detector 4 in this invention are used to accurately identify the location and direction of arteries, and can fix the device to prevent it from shifting during operation. At the same time, it solves the problem of traditional positioning relying on experience and feel.
[0099] It should be noted that the needle insertion guide component 3 and the limiting sleeve 6 are used in conjunction to assist medical staff in controlling the puncture angle and depth, and to solve the problems of difficulty in controlling the angle and depth and easy deviation of the puncture needle.
[0100] In summary, this invention combines mechanical structure with simple electronic sensing technology to achieve precision, standardization, and convenience in arterial puncture. It achieves precise arterial positioning through pressure sensing and precise control of angle and depth through mechanical guidance, fundamentally solving the core pain points of existing puncture procedures. Furthermore, it is simple to operate, cost-effective, and suitable for use in various clinical scenarios and for diverse patient types.
[0101] The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but this does not limit the scope of the invention. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and spirit of the present invention should be within the scope of the present invention.
Claims
1. An arterial vessel localization and puncture device, comprising: Wristbands that can fit the size of the patient's wrist; A base mounted on the wristband for carrying the arterial vascular detector and needle insertion guide; A needle guide component mounted on the base for guiding the angle at which the arterial puncture needle is inserted into the artery. An artery vessel detector for detecting the location of an artery is installed at the bottom of the needle insertion guide component; A limiting sleeve fitted onto the arterial puncture needle to restrict the depth of insertion; During the movement of the wristband relative to the artery, the artery detector detects the pressure of the artery pulsation through one or more pressure-sensitive resistors, determines the location of the artery, and emits an audible / visual alert signal when the location of the artery is determined. The needle guide component can rotate relative to the base to adjust the angle at which the arterial puncture needle enters the artery.
2. The apparatus according to claim 1, characterized in that, The wristband includes: A base mounting cavity is provided in the middle of the wristband and is used to mount the base. A first joint portion is disposed on the left side of the base mounting cavity and used for fixing and installing the base, and a second joint portion is disposed on the right side of the base mounting cavity and used for fixing and installing the base; A first wristband is provided at the upper end of the base mounting cavity and a second wristband is provided at the lower end of the base mounting cavity; A wristband connecting component is provided in the first wristband and / or the second wristband for adapting and fixing the wristband to the patient's wrist according to the size of the patient's wrist.
3. The apparatus according to claim 2, characterized in that, The base includes: A needle guide component mounting cavity is provided in the middle of the base and is used to install the needle guide component. A first base joint portion is disposed on the left side of the insertion cavity of the needle guide component and is used for fixed connection with the first joint portion; and a second base joint portion is disposed on the right side of the insertion cavity of the needle guide component and is used for fixed connection with the second joint portion. A first base beam is disposed at the upper end of the insertion cavity of the needle guide component and connected to the first base joint and the second base joint respectively, and a second base beam is disposed at the lower end of the insertion cavity of the needle guide component and connected to the first base joint and the second base joint respectively.
4. The apparatus according to claim 3, characterized in that, The needle insertion guide component includes: The needle guide body is located in the middle part of the base; A needle guide hole is located in the middle of the needle guide body and is used to guide the angle at which the arterial puncture needle is inserted into the artery. An adjusting component is provided at the upper end of the first base beam and is used to adjust the angle of the needle guide hole; A first connecting rod is fixedly disposed at one end of the needle guide base and connected to the adjusting component via the first base beam; A second connecting rod is fixedly installed at the other end of the needle guide base and connected to the second base beam.
5. The apparatus according to claim 4, characterized in that, The needle guide base is a cuboid; the needle guide hole is an oblique through hole, and the angle between the axis of the needle guide hole and the upper surface of the needle guide base is 30 degrees or 15 degrees.
6. The apparatus according to claim 4, characterized in that, The arterial vascular detector includes: The detection module is used to detect the patient's arterial blood vessels in real time during the movement of the wristband relative to the arterial blood vessels, and to acquire multiple vibration waveform signals located in and around the arterial blood vessels. The signal acquisition module is used to preprocess each vibration waveform signal output by the detection module, identify and collect valid vibration waveform signals that conform to the characteristics of arterial pulsation; The signal threshold determination module is used to compare and process the amplitudes of all valid vibration waveform signals collected by the sample collection module, select the valid vibration waveform signal with the largest amplitude, and use the valid vibration waveform signal with the largest amplitude as the arterial blood vessel threshold signal. The signal comparison module is used to re-detect the patient's arterial blood vessels through the detection module and compare each acquired vibration waveform signal with the arterial blood vessel threshold signal. An artery vessel determination module is used to determine the location of an artery vessel based on the comparison result output by the signal comparison module. The prompting module is used to determine the location of the artery output by the module based on the artery and to issue an audible / visual prompt signal.
7. The apparatus according to claim 6, characterized in that, The artery vessel determination module is specifically used to determine the location of the vibration waveform signal that is the same as the artery vessel threshold signal detected again by the detection module as the artery vessel location.