14 results about "Shunting" patented technology

Endovascular assemblies may include a catheter, a shunt, and a wire. The shunt includes a frame and a liner secured about the frame. The wire extends through the catheter and is coupled to the shunt. The shunt is configured to move between a collapsed configuration and a radially expanded configuration in response to movement of the wire. Endovascular assemblies may be used to shunt a vessel.

This invention relates to the field of natural language processing technology, specifically to a triage method and system for neurological diseases, comprising the following steps: segmenting the syntactic structure of the patient's chief complaint text sequence and identifying nodes; calculating and quantifying the nesting degree of the patient's linguistic organization logic; and obtaining a syntactic potential depth value. This invention can filter out noise interference from complex clinical expressions and extract neurological syndrome features by comparing them with a preset internal capsule lesion pattern. By jointly analyzing feature tensors pointing to limb paralysis with syntactic potential depth values ​​below the normal threshold, dual cross-validation of somatic motor disorders and central cognitive impairment is achieved. Furthermore, by comparing with feature thresholds of peripheral nerve or spinal cord lesions, the specificity of identifying central acute and severe illnesses such as ischemic stroke is improved, optimizing the accuracy of emergency triage.

The invention relates to the technical field of medical instruments, in particular to an anatomical adaptive spinal cord and waist expansion epidural abdominal side electrode which comprises an electrode body, a plurality of contacts are arranged on the electrode body, an electrical stimulation generating device is connected to the outside of the electrode body, and the electrode body is configured to be implanted into the epidural abdominal side of a human spinal cord and waist expansion area. The electrode is directly implanted into the outer ventral side of the spinal epidural to stimulate the spinal motor neurons in a targeted manner, so that the problem of energy shunt of dorsal indirect stimulation is avoided, target neurons are effectively activated under low stimulation intensity, and side effects such as stabbing pain and numbness of a patient are reduced.

The invention relates to an electrical impedance tomography system for controlling hydrocephalus shunting and a storage medium, the electrical impedance tomography system for controlling hydrocephalus shunting comprises a brain impedance evaluation model module, an electrical impedance data acquisition module, a control module, a pressure-adjustable valve and a group of electrodes annularly distributed on the head of a human body; the brain impedance evaluation model module is used for generating a local area standard impedance range based on the physiological characteristic parameters of the patient; the local regions are a plurality of regions divided by the brain impedance evaluation model module into the whole brain; the electrical impedance data acquisition module is used for acquiring real-time local impedance sent by the electrodes; the real-time local impedance corresponds to a local area where the hydrocephalus position of the patient is located; and the control module is used for adjusting the pressure value of the pressure-adjustable valve based on the real-time local impedance and the local area standard impedance range. According to the invention, the problem of poor timeliness of hydrocephalus shunting is solved.

The application relates to the technical field of nerve electrophysiological monitoring, and discloses an intravascular brain electrode. The electrode comprises a flexible net-shaped support adopting an M-shaped weaving structure, a micro recording point independently arranged at a node of the support, and a flexible wire system. The support has a zero axial shortening characteristic and generates a mild radial supporting force after expansion; and the recording point has a directional collection structure for blocking blood shunt. The application realizes mechanical decoupling through M-shaped structure and node fixation, eliminates motion artifacts, improves the signal-to-noise ratio by using directional collection, and reduces the risk of thrombosis by cooperating with a high open hole rate, so that the technical problems of "uncertain measurement", "incomplete measurement" and "insecurity" are solved in one station.

A cerebral spinal fluid shunt plug includes a shunt plug housing having a shunt valve recess formed therein and a window recess with an access hole. The cerebral spinal fluid shunt plug also includes a shunt valve shaped and dimensioned for positioning within the shunt valve recess of the shunt plug housing and a lucent disk shaped and dimensioned for the passage through the central access hole of the shunt plug housing. In another embodiment, a cerebral spinal fluid shunt plug includes a shunt plug housing having a shunt valve recess formed therein and an intracranial monitoring device recess with an access hole. A shunt valve is positioned within the shunt valve recess of the shunt plug housing and an intracranial monitoring device is passed through the central access hole of the shunt plug housing.

The invention provides an AI-driven intelligent guiding method and system for gynecological medical resources, and relates to the technical field of resource guiding, and the method comprises the steps: receiving an initial symptom description, and then carrying out the matching of a correlation problem; performing semantic recombination, and outputting a plurality of fuzzy variant problems; progressive polling is executed, and a polling reply pair sequence is obtained; performing symptom mode membership mapping to obtain an initial membership degree vector sequence; carrying out confidence correction, and outputting a confidence membership degree vector sequence; performing question semantic clustering grouping to obtain K groups of symptom semantic question clusters of the K core symptom modes; mapping and aggregating to obtain K confidence membership degree vector sequences; matching a real-time shunting strategy; and the information is sent to a hospital guide terminal as a reference basis for dynamic scheduling of gynecological medical resources. According to the invention, the technical problem that patients are easily allocated to unsuitable diagnosis and treatment channels due to improper communication because the diagnosis and treatment diversion for patients often depends on simple communication and judgment based on static empirical rules in the prior art is solved.

The present disclosure relates to a shunt catheter assembly for draining cerebrospinal fluid (CSF) into a venous system of a lower spinal region. The shunt catheter assembly includes a sheath having an interior volume, a catheter disposed in the interior volume of the sheath and movable relative to the sheath, a first flange coupled to the catheter and disposed between the catheter and the sheath, and a second flange proximally located relative to the first flange and disposed between the catheter and the sheath. The first and second flanges are expandable between a compressed configuration when the first and second flanges are disposed in the interior volume of the sheath, and an expanded configuration when the first and second flanges are externally disposed relative to the sheath. The first flange is separably deliverable relative to the second flange.

The application relates to the field of artificial intelligence, in particular to a state updating method of a pulse neuron model and a pulse neural network, which are used to improve the stability of the pulse emission behavior of the pulse neuron model. The method comprises the following steps: according to the potassium state quantity of the pulse neuron model at the last moment, performing shunt adjustment on the input signal at the current moment to obtain a shunt signal, then updating the reset membrane potential at the last moment to obtain the initial membrane potential at the current moment; determining the emission pulse at the current moment according to the comparison result between the initial membrane potential at the current moment and a preset emission threshold; determining the potassium state quantity at the current moment according to the potassium state quantity at the last moment, the initial membrane potential at the current moment and the emission pulse at the current moment; and performing reset adjustment on the initial membrane potential at the current moment according to the emission pulse at the current moment, the potassium state quantity at the current moment and the emission threshold to obtain the reset membrane potential of the pulse neuron model at the current moment.

The invention relates to an anchoring mechanism and a device for percutaneous interventional therapy of hydrocephalus, the device comprises a shunting unit, the shunting unit comprises a shunting tube body, a one-way valve and an anchoring mechanism, the anchoring mechanism comprises a fixing part and an anchoring rod, one end of the anchoring rod is connected with the fixing part, the other end of the anchoring rod is a free end, and the anchoring mechanism is connected with the other end of the anchoring rod in an anchoring state. And the anchoring rod deviates relative to the fixed part, or the anchoring rod deviates from the shunting pipe body, so that a space for anchoring is formed. The invention provides a brand new anchoring mechanism which does not relate to an expansion structure, so that the volume of the device in the subarachnoid space can be reduced, and the intracranial occupation is reduced; the device can be used for treating hydrocephalus through an intervention method, open surgical operation is not involved, trauma is reduced during operation, surgical operation time is saved, the contact area of the device and blood is reduced, and therefore the risk of central nervous system injury and blood-related complications is reduced; and the possibility of postoperative infection can be greatly reduced by matching with an anchoring mechanism.

The invention relates to the technical field of medical materials, and discloses a skull drug injection interface for slow-release drug delivery of deep brain tissue, the skull drug injection interface comprises a titanium alloy matrix and a liquid storage port arranged on one side of the titanium alloy matrix, and one side of the liquid storage port close to the titanium alloy matrix is fixedly connected with an outer ring body; the side, close to the titanium alloy base body, of the outer ring body is fixedly connected with a clamping ring, and the side, away from the liquid containing opening, of the titanium alloy base body is provided with a flow dividing valve. According to the invention, preliminary positioning with the titanium alloy base body is realized through the nested structure of the inner ring body and the outer ring body, and then the clamping ring is accurately clamped into the clamping groove, so that the double fixing effects of axial limiting and circumferential rotation prevention are achieved. By means of the structural design, after the connector is implanted into the cranium of a patient, the connection stability of all parts is remarkably improved, and the problem of connection looseness and even breakage caused by physiological activities or external force disturbance after implantation is effectively solved.

The invention relates to the technical field of nerve electrophysiology monitoring, and discloses an intravascular brain electrode. The electrode comprises a flexible net-shaped support adopting an M-shaped braided structure; the micro recording point is independently arranged at a bracket node; and a flexible wire system. The stent has the characteristic of zero axial shortening, and mild radial supporting force is generated after expansion; and the recording point is provided with a directional collection structure for blocking blood shunting. According to the invention, mechanical decoupling is realized through fixation of the M-shaped structure and the node, and motion artifacts are eliminated; the signal-to-noise ratio is improved by utilizing directional acquisition; the thrombus risk is reduced in cooperation with the high aperture ratio, and therefore the technical problems of inaccurate measurement, incomplete measurement and unsafety are solved in a one-stop mode.

A method of shunting inhibition mechanism in a neuromorphic circuit is provided. The method comprises inputting excitatory signals to an artificial neuron soma having a resting membrane potential. Shunting conductances are input to the artificial neuron soma to multiply response to the excitatory signals in the artificial neuron soma, wherein the shunting conductances have a reversal potential approximately equal to the resting membrane potential of the artificial neuron, and wherein increasing the shunting conductances increases membrane conductance of the artificial neuron soma.