35 results about "Nerve tract" patented technology

The invention provides a sandwich type composite membrane support which comprises a compact outer layer, a sandwich layer and an inner layer, wherein the compact outer layer, the sandwich layer and the inner layer are arranged from top to bottom; the compact outer layer is a polylactic acid membrane, the sandwich layer is prepared from biological active factor loaded mesoporous biological active glass balls, and the inner layer is a seed cell loaded chitosan membrane. Therefore, the problem that a single nerve tract which is damaged (but not died) cannot be repaired and treated by the prior art is solved; the problems that an existing drug carrier system cannot achieve directional medicine release and cannot ensure high concentrations of damaged partial factors are solved; the problems that most drug carrier systems are easy to degrade, the drug carrier amount is low, and medicine release cannot run through a spinal cord injury repairing process all the time are solved; the problems that the drug carrier systems is overlarge in volume, may compress spinal cord and meanwhile are not favorable for sewing endorhachis to cause leakage of cerebrospinal fluid are solved.

The invention relates to the technical field of medical science and discloses a method for increasing definition of Micro CT of a peripheral nerve image. The method comprises the steps that soft tissues such as peripheral nerves are dyed by a solution containing calcium ions; and the Micro CT is then used for scanning of the dyed soft tissues. By the method disclosed by the invention, the definition of the scanned image reaches a requirement for nerve tract reconstruction; and the problems of insufficient accuracy and the low image definition during the peripheral nerve three-dimensional reconstruction can be solved. The method disclosed by the invention is characterized in that calcium agent dyeing is carried out to peripheral nerve samples; an original structure of the human body soft tissues is fully maintained and the structure becomes applicable to the CT; and the problem that the CT cannot be applied during the soft tissue reconstruction is solved.

The invention relates to a flexible nerve tract electrode, which comprises a flexible substrate, an electrode unit, an electrode lead, a lead welding spot and an insulating layer, wherein the electrode lead is electrically connected with the electrode unit and the lead welding spot; the electrode unit, the electrode lead and the lead welding spot form an electrode assembly together; the electrode assembly is arranged on the flexible substrate; the insulating layer is arranged on the flexible substrate and covers the electrode lead; and the electrode unit is electrically connected with a nerve tract. The invention also relates to a preparation method for the flexible nerve tract electrode. The flexible nerve tract electrode can be used for distinguishing moving nerve tracts and sensory nerve tracts in a nerve trunk, and can realize functions of a nerve cannula and provide space protection for growth of broken and injured nerves; functional electrical stimulation can be applied to the broken and injured nerves, so that the growth of the broken and injured nerves is accelerated; and the repair state of the broken and injured nerves can be monitored in real time by acquiring electrical physiological information at two ends of the broken and injured nerves. Moreover, the flexible nerve tract electrode can also be used for acquiring nerve information of normal nerve tracts to realize intelligent control of external instruments.

The invention provides a method for establishing a live animal model for studying neuron autophagy. According to the method, the wing nerve tract of a live fruit fly is labeled with fluorescin, an autophagy-related gene is labeled with different fluorescin at the same time, and then the change of autophagy on the axon under the condition of wing damage handling or fruit fly drug feeding can be rapidly and clearly observed. The experimental result shows that neuron autophagy can be simply and directly studied with the animal model established through the method.