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a magnetic drive

A magnetic drive and permanent magnet technology, applied in the field of medical equipment, can solve the problems of small output, low limit reliability, strong magnetic field, etc., to achieve the effect of improving magnetic drive force and overcoming low reliability

Active Publication Date: 2019-02-26
卓优医疗(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defects of small output force and low limit reliability in existing microneedle injection devices and needle-free injection devices, and provide a device with strong magnetic field, large output force, and reliable limit position independent of current. magnetic drive

Method used

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Embodiment Construction

[0015] figure 1 It is the overall structure diagram of the present invention, a kind of magnetic drive device, by sheath (1), outer circular iron core (2), outer permanent magnet (3), spacer (4), end cover (5), inner permanent magnet (6), an inner circular iron core (7), a coil (8) and a skeleton (9), wherein the coil (8) and the skeleton (9) are movable parts, and the rest are stationary parts. The radial inner side of the middle part of the sheath (1) is equipped with an outer circular iron core (2), and the radial inner side of the outer circular iron core (2) is equipped with an outer permanent magnet (3), and the radial inner side of the outer permanent magnet (3) is an inner The permanent magnet (6), the inner permanent magnet (6) is installed on the radially outer side of the inner circular iron core (7), one side of the inner permanent magnet (6) is fixedly connected with the end cover (5), and the end cover (5) is connected with the protective cover (5). The sleeve (...

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Abstract

The invention relates to a magnetic driving device, which is composed of a sheath, an external circular iron core, an external permanent magnet, a cushion block, an end cover, an internal permanent magnet, an internal circular iron core, a coil and a framework, wherein the coil and the framework are movable, and the remaining parts are static. The external permanent magnet and the internal permanent magnet are divided into nine circular rings, wherein each circular ring has a specific magnetizing direction, the magnetic field of an air gap position where the coil is located can be enabled to be substantially enhanced, and a magnetic driving force of a movable part of the coil along the axial direction is improved. The magnetic driving device can be enabled to realize automatic limiting in axial displacement through designing the axial length of each circular ring, and a defect of low reliability caused by limiting implemented through controlling the current in the prior art is overcome.

Description

technical field [0001] The invention relates to a magnetic driving device, which is suitable for medical injection, especially suitable for ophthalmic medical treatment, and belongs to the field of medical equipment. Background technique [0002] With the rapid development of medical science and technology, disease diagnosis, monitoring, sampling and on-site surgical treatment in vivo are becoming more and more minimally invasive and non-invasive. Painful, it is required to change the speed of the injection drug so that the drug can reach the lesion quickly. At the same time, higher requirements are put forward for the volume, quality and function of the eye drug injection device. At present, the existing domestic and foreign eye injection devices It is still mainly in the form of needles. In recent years, microneedles have appeared, but whether it is ordinary needles or microneedles, it is inevitable to contact the patient's eyes, which brings different degrees of pain to t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K33/18A61F9/00
CPCA61F9/0008H02K33/18
Inventor 周京华章小卫张贵辰陈亚爱温春雪胡长斌朴正国
Owner 卓优医疗(苏州)有限公司
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