Abstract: A nerve stimulator and a manufacturing method thereof. The nerve stimulator includes a glass substrate, and a plurality of metal pins provided on the substrate, wherein the metal pins form stimulation portions on one side of the substrate, and the density of the metal pins is greater than 15 Pin/mm2. The stimulation portions in the present nerve stimulator have a high density and a good stimulation effect. The processing method thereof is to cut out a high-density metal pin array first by using a metal underlayer, then the manufacturing method overcomes the deficiency in the prior art that it is rather difficult to manufacture a high density of nerve stimulation electrodes by using other substrates such as ceramics and the like.

Abstract: The present invention relates to the field of medical devices, and specifically to a packaging structure and a packaging method for a retinal prosthesis implanted chip, including a high-density stimulation electrode component processed by a glass substrate, wherein the stimulation electrode component comprises the glass substrate, and a plurality of stimulation electrodes and a pad structure provided on the glass substrate; the stimulation electrodes are formed through cutting out metal pins on the metal and then pouring with glass; the stimulation electrode component is connected to an ASIC chip; a glass packaging cover is covered on the ASIC chip, the glass packaging cover is provided with a metal feedthrough structure for communicating with the stimulation chip; and the packaging cover covers and encapsulates the pad structure.

Abstract: A method for calculating blood pressure based on pulse return wave transmission time, and a blood pressure monitor have been provided. The method includes the following steps: S1: collecting and storing pulse waveform data at a fingertip; S2: processing said pulse waveform data to obtain a heart rate and parameters of a plurality of pulse periods, detecting time axis coordinates of a primary wave starting point SPL1 of a pulse wave and a growth point SPL2 of a return wave in each of said pulse periods, and calculating a corresponding pulse return wave transmission time RWTT: RWTT=SPL2?SPL1; S3: calculating the pulse return wave transmission time RWTT in each of said pulse periods to form a RWTT array; and S4: calculating systolic and diastolic pressures based on said RWTT array and the heart rate.

Abstract: A method for calculating blood pressure based on pulse return wave transmission time, and a blood pressure monitor have been provided. The method includes the following steps: S1: collecting and storing pulse waveform data at a fingertip; S2: processing said pulse waveform data to obtain a heart rate and parameters of a plurality of pulse periods, detecting time axis coordinates of a primary wave starting point SPL1 of a pulse wave and a growth point SPL2 of a return wave in each of said pulse periods, and calculating a corresponding pulse return wave transmission time RWTT: RWTT=SPL2?SPL1; S3: calculating the pulse return wave transmission time RWTT in each of said pulse periods to form a RWTT array; and S4: calculating systolic and diastolic pressures based on said RWTT array and the heart rate.