32results about How to "Reduce foreign body reactions" patented technology

Zwitterionic microgels, zwitterionic microgel assemblies, their formulations and methods for their use.

The invention provides a microneedle array type brain-computer interface device and a preparation method thereof, comprising: using a non-conductive material as an insulating layer between needles, preparing a plurality of through holes in the insulating layer between the needles; preparing a plurality of metal pads on the conductive material layer The conductive material layer is arranged under the insulating layer between the needles, and the upper surface of the conductive material layer is connected to the lower surface of the insulating layer between the needles; the conductive material layer is processed into a micro columnar structure distributed in an array, so that the micro columnar structure Insulate each other; process the micro-columnar structure into a microneedle structure with a needle tip at the bottom to form a microneedle array layer distributed in an array with the needle tip facing down; prepare external leads for connecting external circuits above the microneedle array layer; Electrode points are prepared on the tip of the microneedle array layer; a microneedle array brain-computer interface device is obtained. The invention has the advantages of reducing the process steps of the microneedle array type brain-computer interface device, improving production efficiency and yield, reducing the processing cost of the device, and the like.