Noncontact magnetic sensing-type intracranial pressure monitoring device

Abstract

The invention relates to a noncontact magnetic sensing-type intracranial pressure monitoring device, which comprises an excitation source for generating an excitation signal and a reference signal, a magnetic sensing detection device surrounding a tested head and a phase discriminator, wherein the magnetic sensing detection device is connected to the output end of the excitation source, an alternating excitation magnetic field signal is generated according to an excitation signal provided by the excitation source, the excitation magnetic field signal runs through the entire tested head, the excitation magnetic field signal and a secondary magnetic field signal are superimposed together to form a superimposed magnetic field signal having phase change relative to the reference signal; the phase discriminator is used for detecting phase difference between the reference signal and the superimposed magnetic field signal, and the phase difference is used for reflecting the pressure variation of the wall of a cranial cavity caused by intracranial contents. Due to the adoption of the noncontact magnetic sensing-type intracranial pressure monitoring device, the defect that inductively coupled plasma (ICP) monitoring cannot sensitively reflect the variation of early lesion because the ICP is not increased greatly under the adjustment effect of cerebrospinal fluid and cerebral blood flow dynamics when the early lesion of the brain causes the increase of ICP can be overcome.

Description

technical field [0001] The invention belongs to the technical field of biomedical medical equipment, and in particular relates to a non-contact magnetic induction intracranial pressure monitoring device for neurology and surgery. Background technique [0002] All kinds of craniocerebral trauma, brain tumor, stroke, cerebral infarction, cerebral ischemia, encephalitis, epilepsy, cerebral hematoma, high altitude cerebral edema and other common diseases in neurology and surgery, most of the cases are violent, critical condition and high mortality rate . Most of these diseases are accompanied by increased intracranial pressure (ICP), which is one of the most common causes of patient deterioration, poor prognosis, secondary brain injury, and death. Accurate, rapid, objective and convenient ICP monitoring is an important means to observe changes in patients' conditions, make early diagnosis, determine treatment plan, guide clinical drug treatment, judge and improve prognosis. ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the cerebrospinal fluid and cerebral hemodynamics adjustment effect when the ICP rises caused by early brain lesions, so that the ICP rise is not large, resulting in the inability of direct ICP monitoring to reflect the changes of early lesions sensitively. A non-contact magnetic induction intracranial pressure monitoring device is proposed

Images