72 results about "Intracranial Cavity" patented technology

An endoscopic system and method that is adaptable for therapeutic applications as well as sensor operation and is capable of producing 3-dimensional human vision simulated imaging with real dynamic convergence, not virtual convergence. Applications may include use in any space, including but not limited to, intra-abdominal cavities, intra-thoracic cavities, and intra-cranial cavities. Further, two or more diagnostic / sensor probes may be used, with at least two being the same kind to create the 3-dimensional effect, such as but not limited to, camera, ultrasound, and magnetic-resonance imaging. Diagnostic / sensor probes are each mounted to the end of a different arm, with the other ends of the two arms both being attached to the same hinge that allows them to turn freely on the same axis from side-to-side within a 180 degree angle range of movement on the distal end of a main tubular shaft system. Medical, as well as other applications, are contemplated.

A method and device for reducing the damaging effects of radiant energy, blast, or concussive events includes applying pressure to at least one jugular vein to reduce the egress of blood from the cranial cavity during or before the incidence of the imparting event. Reducing blood outflow from the cranial cavity increases intracranial volume and / or pressure of the cerebrospinal fluid to reduce the risk of traumatic brain injury and injuries to the spinal column. Reducing blood outflow further increases the intracranial pressure and volume, and thereby increases the pressure and volume of the cochlear fluid, the vitreous humor and the cerebrospinal fluid to thereby reduce the risk of injury to the inner ear, internal structure of the eye and of the spinal column. In addition, increasing intracranial pressure and volume reduces the likelihood of brain injury and any associated loss of olfactory function

The invention discloses a treatment instrument for intracranial pressure monitoring and drainage and replacement of cerebrospinal fluid. The treatment instrument combines the drainage treatment technology of a cerebrospinal fluid waist penetrating pipe with the computer virtual instrument technology. The treatment instrument comprises an outer connecting pipe, a pressure monitoring branch, a drainage loop and a replacement loop, wherein the pressure sensor transfers real-time pressure of the cranial cavity to a control system; and the drainage loop and the replacement loop feed back drainage amount and replacement amount to the control system which controls a drainage device / replacement device to work or stop so as to drain / replace the cerebrospinal fluid. The instrument can be widely applicable to places where the intracranial pressure of a patient needs to be continuously monitored and drainage and replacement needs to be carried out on the cerebrospinal fluid in the neurology department and the neurosurgery department, replaces the current manual drainage and replacement operations carried out according to experience, realizes automation of the sections such as pressure monitoring, drainage and replacement in treatment and can continuously acquire and store real-time data in treatment.

The present invention relates to devices and systems that alter intracranial compliance, cerebral blood flow and / or intracranial pressure pulsatility / waveform by oscillating the contraction and expansion of a compressible composition within the cranial or spinal cavities such that they increase intracranial capacity. The contraction and expansion of the compressible composition in the oscillating compliance devices can be due to an individual's intracranial pressure, the result of the expansion and compression of a reservoir which is mediated by the contractility of the heart or driven by a pump gaited to a biorhythm. The invention also relates to methods for protecting an individual's brain from abnormal arterial pulsations and for altering an individual's cerebral blood flow using the devices and systems of the invention. The oscillating compliance devices can be used to treat several diseases and / or conditions characterized by altered / abnormal intracranial compliance, cerebral blood flow and / or intracranial pressure pulsatility / waveform, including hydrocephalus, stroke, dementia and migraine headaches, vasospasms, congestive heart failure, cardiopulmonary bypass or carotid endarterectomy.

A method and device for reducing the damaging effects of radiant energy, blast, or concussive events includes applying pressure to at least one jugular vein to reduce the egress of blood from the cranial cavity during or before the incidence of the imparting event. Reducing blood outflow from the cranial cavity increases intracranial volume and / or pressure of the cerebrospinal fluid to reduce the risk of traumatic brain injury and injuries to the spinal column. Reducing blood outflow further increases the intracranial pressure and volume, and thereby increases the pressure and volume of the cochlear fluid, the vitreous humor and the cerebrospinal fluid to thereby reduce the risk of injury to the inner ear, internal structure of the eye and of the spinal column. In addition, increasing intracranial pressure and volume reduces the likelihood of brain injury and any associated loss of olfactory function.

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.

A method and device for reducing the damaging effects of radiant energy, blast, or concussive events includes applying pressure to at least one jugular vein to reduce the egress of blood from the cranial cavity during or before the incidence of the imparting event. Reducing blood outflow from the cranial cavity increases intracranial volume and / or pressure of the cerebrospinal fluid to reduce the risk of traumatic brain injury and injuries to the spinal column. Reducing blood outflow further increases the intracranial pressure and volume, and thereby increases the pressure and volume of the cochlear fluid, the vitreous humor and the cerebrospinal fluid to thereby reduce the risk of injury to the inner ear, internal structure of the eye and of the spinal column. In addition, increasing intracranial pressure and volume reduces the likelihood of brain injury and any associated loss of olfactory function.

The object of providing a cerebrospinal fluid drainage system 1 which reacts precisely to changes in pressure in the cerebrospinal fluid, with ease of operation, is achieved by the present invention in that a pump 5 is used for draining the cerebrospinal fluid (liquor), wherein operating measured values supplied by sensors act as controlled variable for the operation of the pump. The pressure in the liquor line currently measured by a pressure sensor 10, the liquor pressure in the intracranial cavity being treated, measured intracorporeally by a pressure sensor, and / or the volume of liquor already pumped out, as operating measured value, can, for example, serve as the basis for operational control of the pump of the liquor drainage system. The liquor drainage system according to the invention has the advantage that the liquor is drained not only simply on the basis of the excess pressure in the intracranial cavity being treated, but is actively pumped out of the intracranial cavity in a controlled manner, in particular with constant measurement of the liquor pressure. In this way the pumping capacity can be regulated depending on requirement and the drainage pressure or the liquor pressure kept reliably within a specific pressure range.

A system which includes a first sensor placed proximate to a perfusion field of an artery receiving blood which emanates from the cranial cavity is configured to monitor pulsations of the artery receiving blood which emanates from the cranial cavity artery. A second sensor placed proximate to a perfusion field of an artery which does not receive blood emanating from the cranial cavity and approximately the same distance from the heart as the first sensor configured to monitor pulsations of the artery which does not receive blood emanating from the cranial cavity. A third sensor placed distally from a heart is configured to monitor pulsations of a distal artery. A processing system responsive to signals from the first, second, and third sensors is configured to determine intracranial pressure.

The invention discloses a method for determining a craniotomy approaching channel through 3D modeling of medical images and belongs to the technical field of medicines. The method comprises steps as follows: a cranial cavity image of a patient is acquired; 3D modelling is performed on the cranial cavity image, and a 3D model of a cranial cavity is obtained, wherein the 3D model of the cranial cavity comprises a skull, blood vessel distribution in the skull and tumor; on the basis of the position of tumor, the position where craniotomy is performed formally is determined on the skull in the 3Dmodel of the cranial cavity; the relation between the position where craniotomy is performed formally and the position of tumor is determined with the position where craniotomy is performed formally as a datum point, and an approaching channel is constructed; the approaching channel is output. With the application of the method, before a doctor formally implements the craniotomy operation, the doctor can have a comprehensive knowledge about the craniotomy operation, the doctor is assisted in rapidly and accurately finding the tumor position, the operation time is shortened, and the operation risk is reduced; besides, when the doctor formally implements the craniotomy operation, the doctor is helped to determine the process of operation instruments, and the operation instruments can accurately reach the tumor position.

A system for reducing the damaging effects of radiant energy, blast, or concussive events includes applying pressure to at least one jugular vein to reduce the egress of blood from the cranial cavity during or before the incidence of the imparting event. Reducing blood outflow from the cranial cavity increases intracranial volume and / or pressure of the cerebrospinal fluid to reduce the risk of traumatic brain injury and injuries to the spinal column. Reducing blood outflow further increases the intracranial pressure and volume, and thereby increases the pressure and volume of the cochlear fluid, the vitreous humor and the cerebrospinal fluid to thereby reduce the risk of injury to the inner ear, internal structure of the eye and of the spinal column. In addition, increasing intracranial pressure and volume reduces the likelihood of brain injury and any associated loss of olfactory function