An Evoked Potential Monitor for Real-time Monitoring of Cavernous Nerve Injury During Laparoscopic Surgery

Abstract

The invention discloses an evoked potential monitor for real-time monitoring of cavernous nerve damage during laparoscopic surgery, which comprises a stimulating signal output line, a host computer, an evoked potential recording line and a reference electrode line. The stimulation signal output line includes the nerve stimulation probe rod and the output line body connected in sequence. The output line body is connected to the nerve stimulation probe rod and the current stimulation output socket of the evoked potential monitor through the connecting plug; the evoked potential recording line includes positive and negative wires connected respectively. The needle recording electrode and its evoked potential recording line body, and the evoked potential recording line body are respectively connected to the evoked potential signal acquisition socket of the evoked potential monitor; the reference electrode line includes a needle-shaped reference electrode and a reference electrode line body, and the reference electrode line body is connected to the The reference signal acquisition socket of the evoked potential monitor. The invention can realize real-time monitoring of penis cavernous body nerve in laparoscopic radical prostatectomy or radical cystectomy and other pelvic operations.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to an evoked potential instrument for real-time monitoring of penile cavernous nerve damage during laparoscopy. Background technique [0002] Pelvic surgery such as radical prostatectomy and radical cystectomy often damages the cavernous nerve (CN) of the penis, and the incidence of postoperative erectile dysfunction (erectile dysfunction, ED) can reach 25-90%. affect the patient's quality of life. Although Walsh, Donker and other scholars designed bilateral CN-preserving radical prostatectomy and achieved certain results, 14-69% of patients still had ED to varying degrees after surgery. With the incidence of prostate cancer and bladder cancer becoming younger, patients have higher requirements for postoperative erectile function, and CN is usually required to be preserved during surgery. [0003] The main reasons for the difficulty in preserving the CN during surgery are:...

AI Technical Summary

Problems solved by technology

Studies have shown that ICP technology responds faster than CaverMap, has stable results, and has higher specificity and sensitivity. However, it takes about 10-60 seconds to measure ICP once, and it takes 1-2 minutes to wait for ICP to stabilize between each stimulation, which will lead to Prolonged surgery time

And like CaverMap, continuous intraoperative monitoring cannot be achieved, and intermittent nerve monitoring may still cause nerve damage

[0009] Accordingly, under the guidance of the precision medicine strategy, domestic and foreign scholars have carried out extensive attempts and a large number of studies, such as intraoperative laser nerve stimulation, dye fluorescence imaging, photoacoustic imaging and intraoperative nuclear magnetic resonance and other technologies to locate and monitor CN, but poor performance

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