Medical injection and attraction platform

Abstract

The invention relates to a medical injection and attraction platform, which comprises a main control unit, an injection device, an attraction device and a feedback device. The medical injection and attraction platform comprises the following steps: an injection pump introduces normal saline into human organs; the normal saline is extracted out by a negative pressure pump; pressure in an organ is measured by a pressure sensor, so that when the pressure can reach a pre-set value, the main control unit adjusts the speed of injection and attraction; a satisfactory injection flow can be set by the platform, and the pressure can be also fed back to the platform by a pressure measuring device in a cavity, so as to automatically control and attract the negative pressure, therefore, the pressure in the cavity is maintained within a safety range. According to the invention, the actual pressure in the cavity can be dynamically displayed in real time; safety monitoring and controlling can be conducted to ensure the operative safety; the patients' death event can be avoided during the operative process; operative efficiency can be increased through automatic attraction for removing calculuses.

Description

technical field [0001] The invention relates to an accessory device for organ surgery, in particular to a medical perfusion suction platform, which is applied to medical equipment in percutaneous nephroscopy and ureteroscopy in urology or other professional intracavitary operations in the medical field. Background technique [0002] Percutaneous nephrolithotomy is the main treatment for upper urinary tract stones. Currently the most widely used methods are standard channel (20-24Fr) and microstomy (14-18Fr) percutaneous nephrolithotomy (Yuhico MP. KO R. The current status of percutaneous nephrolithotomy in the management of kidney stones Minerva Urol Nefrol. [J] 2008 ;60(3):159-175.). Microstomy percutaneous nephrolithotomy is an effective method for the treatment of kidney stones, and it is also the development trend of percutaneous nephrolithotomy. Microstomy percutaneous nephrolithotomy has small channels and less trauma, and it can be crushed with high-power holmium las...

AI Technical Summary

Problems solved by technology

However, stone removal methods mainly use high-pressure perfusion and forceps to remove stones. Infected stones release bacteria and heat sources are absorbed into the blood circulation with high-pressure perfusion fluid during surgery, causing intraoperative or postoperative fever, bacteremia, and even infectious diseases. Shock (Li LY, Gao X, Yang M, et al .Does a smaller tract in percutaneous nephrolithotomy contribute to less invasiveness A prospective comparative study[J]. Urology.2010 ;75(1):56-61.); standard channel Percutaneous nephrolithotomy combined with ultrasonic ballistic lithotripsy system can immediately remove stones, reduce or avoid forceps crushed stones and high-pressure water flow out of crushed stones, effectively reduce the pressure in the renal pelvis, and reduce toxins and pathogenicity in the process of lithotripsy. The absorption of pyrogens reduces the incidence of fever and bacteremia, and reduces fluid extravasation (Song L, Chen Z, Liu T, et al. The application of a patented system to minimally invasive percutaneous nephrolithotomy[J].J Endourol. 2011 Aug;25(8):1281-1286); however, standard channel percutaneous nephrolithotomy still cannot accurately adjust and monitor the pressure in the renal pelvis, and cannot completely eliminate the risks of high pressure in the renal pelvis and water perfusion

What is more concerned by urologists is intraoperative pressure in the renal pelvis. All current medical perfusion equipment at home and abroad only have two parameter settings: perfusion pressure and flow rate. The operator manually adjusts it through clinical experience, which is relatively random. and uncertainty, and it is difficult for those with less surgical experience or beginners to master

The perfusion pressure is too high, which leads to fluid reflux and extravasation in the cavity, especially when stones are combined with urinary tract infection, serious complications such as urogenous sepsis are prone to occur, and severe cases lead to patient death

Scholars at home and abroad have noticed the great harm caused by high pressure in the renal pelvis during percutaneous nephrolithotomy, but so far there is no good monitoring and solution

Images