37 results about "Biomagnetism" patented technology

A tip for a biomagnetic particle transfer device generally includes a solid body made from a highly magnetically permeable material and having a shape adapted to concentrate a magnetic field generated by the transfer device on the body. The tip body preferably includes a truncated cone-shaped portion and a solid probe portion. The cone-shaped portion defines an attachment end engageable with an end of the transfer device and an apex opposite the attachment end. The probe portion extends from the apex of the cone-shaped portion, and the magnetic field is concentrated on the probe portion.

The present invention recognises and eliminates from a biomagnetic measurement signal interferences whose source is disposed in the direct vicinity of an object being measured. The invention utilises the SSS method that can be used to separate from one another the signals associated with the internal and external sources of a set of measurement sensors by calculating two series developments. The sources to be examined in the invention and disposed in the so-called intermediate space produce a component to both of the developments, and can, therefore, be detected by means of an analysis to be performed in a time domain. This division into components can be made using the Principal Component Analysis (PCA), the Independent Component Analysis (ICA) or the Singular Value Decomposition. Finally, the clarified interferences in the intermediate space can be eliminated from the measured signal using, for example, the linear algebraic orthogonal projection.

A biomagnetic measurement apparatus that readily enables the positional adjustment of a test object in biomagnetic measurement and a biomagnetic measurement method are provided. In biomagnetic measurement, in the case where the test object is a heart, for example, a permanent magnet is disposed on the body surface of the xiphoid process of a subject and the pectoral region is disposed under the bottom face of the cryogenic container. A processing unit stores the calibration curve of the permanent magnet and performs a process for estimating the positional relationship between the subject and the bottom face of the cryogenic container in accordance with the measurement result of the magnetic field strength of the permanent magnet. Also, the processing unit performs a process for estimating the distance between the body surface of the test object and the bottom face of the cryogenic container.

A biomagnetic measurement apparatus having functions to detect the release of a magnetic field lock in a SQUID fluxmeter operation circuit due to the influence of a much greater noise level than that of a biomagnetic signal, to notify an operator of the release of the magnetic field lock, and to automatically or manually revert to a state for allowing magnetic measurement. The release of the magnetic field lock occurs when an integrator of the fluxmeter operation circuit is saturated. Thus, a high pass filter is provided at a subsequent stage of the integrator, and a function is provided to judge that the integrator is in a saturated state when the noise level of the output after passing through the high pass filter is lower than a pre-set threshold. The biomagnetic measurement apparatus can detect a saturated state of the integrator, which is a cause for the release of the magnetic field lock of the SQUID fluxmeter operation circuit, and thereby when the loading of measured data is conducted in an appropriate operation range of a magnetic sensor, or even when a part of the loaded measured data is data outside an operation range of the magnetic sensor, it is possible to deal with the data so as to properly analyze it.

Disclosed herein is a biomagnetic measurement apparatus capable of visualizing cardiac electrical current distributions with information on the cardiac morphology of a subject. A magnetic field component in the z direction, vertical to the chest surface of a subject, is measured from two directions, front and back of the chest, and then to calculate the current distributions in the two directions and the distributions of the amplitudes of those current distributions. A three-dimensional standard heart model is created from average data on the cardiac morphology obtained from plural healthy subjects. An optimal position of the model is determined using the coordinates of the sinus node and the coordinates of the left ventricle. Then, a weight coefficient is obtained by front and back current distributions and front and back the distributions of the amplitudes of those current distributions on a set boundary of the model.

The object of the invention is to provide a biomagnetism measuring device using a high-performance cylindrical shielding apparatus provided with a flange-type plate having an opening formed on a circumferential face, an auxiliary cylinder in which one or plural cylindrical members are connected so that the central axis of the opening of the flange-type plate and each central axis of the cylindrical members are coincident, cylindrical shields having first, second and third angular ranges with the y-axis, a revolving door having a cutout in a portion parallel to the y-axis and acquired by integrating the cylindrical shields, shield bases for supporting the cylindrical shield to which the flange-type plate is connected in a circular-arc part at both ends, revolving parts for revolving the revolving door in a circumferential direction of the y-axis along a circumferential part of the cylindrical shield and opening or closing an opening in the circumferential direction, a cryostat arranged inside the opening of the auxiliary cylinder and the opening and a SQUID fluxmeter arranged on a measurement face parallel to an XY plane inside the cryostat held at low temperature and characterized in that the circumferential part of the cylindrical shield is inserted between the circumferential parts of the cylindrical shields when the revolving door is closed, cylindrical internal space is formed and an environmental magnetic field that invades the internal space is screened.

The invention provides a nano magnetic bead for nucleic acid purification. A preparation method of the nano magnetic bead includes the processes of preparation and surface modification of nano microspheres. The biologically-magnetic microspheres of certain sizes are obtained through an aqueous phase reaction, groups capable of adsorbing nucleic acid are introduced to the surfaces of the biologically-magnetic microspheres, through the character that silicon dioxide is electrified to adsorb nucleic acid, multiple complex samples can be efficiently purified, and therefore automation of nucleic acid purification is achieved and the workload of working staff is greatly reduced. The nano magnetic bead has the advantages that dispersibility is good, cost is low, particle uniformity is good, and the size of the magnetic bead is high in controllability, the nano magnetic bead can be effectively used for diagnostic reagent earlier purification and clinical nucleic acid detection, and has wide application prospects and social and economic benefits in the field of sequencing and the fields of biologically-magnetic microsphere targeted therapy and biological medicine development.

A magnetic shielding apparatus having a high shielding effect. With the magnetic shielding apparatus having an opening (for example, a cylindrical magnetic shielding apparatus provided with a door), the door covering the opening is electrically and / or magnetically connected to a main body by means of electrically and / or magnetically connecting members. The magnetic shielding apparatus is higher in magnetic shielding factor than the conventional magnetic shielding apparatus, and a magnetic field measuring apparatus using the magnetic shielding apparatus, capable of measuring biomagnetism generated from an inspection target (a living body), with higher sensibility than before.

The invention discloses multifunctional intelligent acupuncture and moxibustion diagnosis and treatment instrument and an application method thereof. The diagnosis and treatment instrument comprises an acupuncture point detection module, an acupuncture point positioning module and an acupuncture and moxibustion therapy module which can be used separately or as a whole, wherein the acupuncture point detection module is used for collecting information of body surface impedance, acoustic electricity, infrared temperature, luminescence intensity, biomagnetism and electromyogram; the acupuncture point positioning module is used for lively and directly displaying the acupuncture point positions on a human 3D (three-dimensional) model, and conducting objective and accurate positioning by combining position relation of human skeleton, muscle, vessel, nerve, lymph or viscera and acupuncture points, without influence by body figure difference of users; and the acupuncture and moxibustion therapy module is used for realizing multiple treatment of oscillation massaging, infrared thermal therapy, electromagnetic treatment, pulse current treatment and the like. The multifunctional intelligent acupuncture and moxibustion diagnosis and treatment instrument and the application method thereof have the advantages of precisely detecting all physical characteristics of the acupuncture points, providing complete and reliable diagnosis reference and basis for patients and medical staff, providing accurate and reliable positioning results, and adopting multiple acupuncture and moxibustion therapy means so as to provide convenience to users.

The invention discloses a preparation method and equipment for novel biomagnetic ceramsite filling for water treatment. The preparation method comprises the steps of mixing activated magnetic powder,ceramsite, borax and titanium dioxide in a certain proportion, then mixing with water through a magnetic microbubble stirring and mixing device, performing granulation, drying, calcining, water washing, drying and magnetizing to form a magnetic ceramsite filling matrix, loading a surface material comprising coal, clay, neodymium iron boron and water on the surface of the magnetic ceramsite fillingmatrix in a rotary spray load device, and performing secondary drying, calcining and cooling to form the biomagnetic ceramsite filling. Membrane hanging is more easier; the prepared biomagnetic ceramsite filling has a promotion effect on microorganism aggregation of a biological membrane, so that the specific surface area of the surface of the biological membrane is increased; a removal effect ofthe biological membrane on pollutants is improved; ammonia-nitrogen removal efficiency can be greatly improved; and the popularization and application of the method and the equipment in actual sewage(waste water) biotreatment are facilitated.

A magnetic measuring apparatus includes an inclination gantry including a mount surface and an inclined surface that is inclined with respect to the mount surface, a cryostat disposed on the inclined surface, a cryocooling system connected to the cryostat, a sensor tube connected to the cryostat and including a curved surface that does not curve in a predetermined direction and curves in a direction orthogonal to the predetermined direction such that a center of the curved surface protrudes with respect to side edges of the curved surface, and a magnetic sensor that measures biomagnetism and is housed in the sensor tube such that a sensor surface of the magnetic sensor faces the curved surface. The sensor surface is inclined with respect to the mount surface in a direction that is the same as a direction in which the inclined surface is inclined.

A magnetic measuring apparatus includes an inclination gantry including a mount surface and an inclined surface that is inclined with respect to the mount surface, a cryostat disposed on the inclined surface, a cryocooling system connected to the cryostat, a sensor tube connected to the cryostat and including a curved surface that does not curve in a predetermined direction and curves in a direction orthogonal to the predetermined direction such that a center of the curved surface protrudes with respect to side edges of the curved surface, and a magnetic sensor that measures biomagnetism and is housed in the sensor tube such that a sensor surface of the magnetic sensor faces the curved surface. The sensor surface is inclined with respect to the mount surface in a direction that is the same as a direction in which the inclined surface is inclined.

The invention relates to a preparation method of a porous magnetic conductive biological ceramic electrode for a microbial fuel cell. The preparation method comprises the steps of the preparation of a porous ceramic plate, preparation of an anode electrode and preparation of a cathode electrode. By utilizing the advantages and the characteristics of conductivity and biocompatibility of a porous ceramic, the surface area of the electrode is increased, the electrode has biomagnetism, and is favorable for biofilm colonization and stripping, and the function of a biofilm in the electrode is improved; meanwhile, the electrode has the characteristics of good waterproof performance, good conductivity, good air permeability, low synthesis cost, and short production time, and thus has broad market prospects.

A Superconducting Quantum Interference Device (SQUID) magnetic sensor system and method can image organic transplant condition, such as status, acceptance, or rejection, in-vivo. This represents a major advane in transplant imaging technology with a new market for biomagnetic sensor devices. In-vivo transplant condition determination provides a greater range of imaging methodologies over existing methods in sensitivity, and enables early detection of rejection with the ability to determine the need for anti-rejection drugs.

The invention relates to a readout circuit based on SQUID (Superconducting Quantum Interference Device) offset voltage reversal and a method for inhibiting low-frequency noise. The readout circuit is characterized in that the offset reversal is realized by an offset reversal circuit in order to inhibit the generation of the low-frequency noises; and particularly, the readout circuit comprises an SBC(SQUID Boottrap Circuit)-structured SQUID low temperature part and an offset reversal readout circuit part. The main process of the method comprises the steps of: (1) regulating an input offset voltage in an amplifier; (2) loading an alternating-current square-wave offset voltage; (3) regulating a flux phase and compensating direct-current flux; (4) eliminating carrier waves; and (5) outputting in an integral feedback manner. The circuit related by the invention is simpler in structure and convenient for multi-channel integration, and can be widely applied to low-frequency measurements such as biomagnetism and geophysical exploration, etc.

The invention belongs to the field of biomagnetism and life health-care articles. The invention provides a jade permanent magnetic physical therapy instrument and a health-care method thereof, aiming to achieve effective health care and physiotherapy effects by a systemic energy field generated by ecological minerals and permanent magnets. The jade permanent magnetic physical therapy instrument includes a magnet bathing device and a connected jade unit that cooperatively take effect on the different parts of a human body, the magnet bathing device includes a bathing basin, a plurality of mineral pebbles having the particle size of 4-80mm are laid on the inner bottom plate of the bathing basin, a plurality of boss-shaped permanent magnetic components are symmetrically arranged under the outer bottom plate of the bathing basin, the upward polarities of the permanent magnetic components are the same, the connected jade unit is formed by the connection of a plurality of mineral plates having the area of 4-100cm<2>, and permanent magnetic small rings are arranged on the surfaces of the mineral plates. Through the adoption of the energy running water of the dissolved mineral elements and the acupoint magnetic therapy of the connected jade unit, the instrument and the health-care method thereof can uniquely cooperate with the homeopathy of quantum medicines, excites the restoration capability of a human-body self-healing system, and achieves the smooth spontaneous healing effect.