Pulse apparatus

Abstract

The invention discloses a pulse apparatus which comprises a framework and three identical and independent measuring heads. Each measuring head comprises a force sensor, a pre-loaded pressure adjusting mechanism and a measuring pressure head, a fixed end of the force sensor is fixed onto the framework, and the pre-loaded pressure adjusting mechanism is connected to a measuring end of the force sensor; each pre-loaded pressure adjusting mechanism comprises a support, a motor capable of rotating clockwise and anticlockwise, a lead screw and a nut, the motor is mounted on the support, the lead screw and a motor shaft of the motor rotate synchronously, and one end of the lead screw is supported on the support by a rolling bearing; and the measuring pressure heads are fixed onto the nuts, each nut and the corresponding lead screw are matched with each other in a helical movement manner, and rotation of each lead screw is converted into linear movement of the corresponding nut along the lead screw, so that the measuring pressure heads are driven to move in linear directions. The pulse apparatus has the advantages that acting force which is exerted by an arm of a patient to the measuring pressure heads can be accurately measured by the force sensors, and accordingly the pulse apparatus is good in repeated measurement precision and high system measurement precision.

Description

technical field [0001] The invention belongs to the technical field of medical diagnostic instruments, in particular to a pulse monitor. Background technique [0002] Pulse condition is a diagnostic term in traditional Chinese medicine. It is one of the important means of disease diagnosis in traditional Chinese medicine to rely on the finger to diagnose the radial artery of the patient, which is commonly known as the pulse signal. Chinese medicine applies different pressures to the patient's radial artery with fingers, and senses the patient's pulse under these different pressure states. Get what TCM calls Pulse Condition. Including frequency, rhythm, fullness, unobstructed condition, gentleness of momentum, amplitude of fluctuation, etc. According to the theory of traditional Chinese medicine, the formation of pulse condition is closely related to visceral qi and blood. For example, the heart governs the blood vessels, the lungs control the blood vessels, the spleen go...

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Problems solved by technology

[0007] However, the load cell used in the fast-positioning three-part multi-point pressure pulse monitor of the invention application No. 201110264635.9 is placed at the end of the measuring probe, and the distance between the three parts of the Cun Guan Chi for pulse diagnosis in traditional Chinese medicine is only about two centimeters. , in order to ensure that the three probes do not touch each other and achieve independent measurements, the size and structure of the sensors used are limited

The main beam of the load cell adopted in the embodiment in said patent is a sheet-type elastic beam with a size of only 14 mm long, 6 mm wide, and 0.8 mm thick. The linearity of the strain gauge load cell of this structure The accuracy is relatively low, and the sensitivity to the position of the force action point is relatively high. On the one hand, the accuracy of force measurement is difficult to reach a high level. On the other hand, when repeated measurements are made, due to the subtle The position deviation may cause the sensor output to change significantly, which will lead to differences in the results of the two measurements before and after, and the repeatability of the measurement results is low

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