Bladder drainage medicine perfusion device

Abstract

The invention relates to a bladder drainage medicine perfusion device. A urethral catheter is a three-chamber catheter provided with a urination drainage chamber, a water injection chamber and a medicine perfusion chamber, wherein the three chambers of the urethral catheter are respectively independent; the urination drainage chamber is positioned in the center of the urethral catheter, the upper end of the urethral catheter is closed, the side wall on the upper end is provided with a drainage port which is communicated with the urination drainage chamber, and the end surface of the lower end of the urethral catheter is provided with an outlet of the urination drainage chamber which is communicated with a urine drainage bag; the water injection chamber and the medicine perfusion chamber are respectively arranged in the side wall of the urethral catheter; a water injection port on the upper end of the water injection chamber is communicated with a positioning sac, a water injection hole on the lower end of the water injection chamber is connected with a water injection interface, and the water injection interface is provided with a switch; and a medicine perfusion port on the upper end of the medicine perfusion chamber extends through the side wall of the urethral catheter, a medicine perfusion hole on the lower end of the medicine perfusion chamber is connected with a medicine perfusion interface, the medicine perfusion interface is connected with a medicine perfusion pump capable of adjusing the flow rate through a catheter, and one end of the medicine perfusion pump is connected with a medicine tank. The bladder drainage medicine perfusion device is simple in structure and convenient to use, has a urethral catheterization function, and can continuously and slowly perfuse medicine into the bladder as required.

Description

technical field [0001] The invention relates to a medical device, in particular to a bladder drainage drug infusion device. Background technique [0002] Bladder perfusion is a commonly used local drug therapy method in the bladder cavity in clinical practice. It is mainly used for postoperative preventive chemotherapy of bladder tumors and perfusion and flushing of cystitis. The usual method is to pass diluted drugs through the urinary catheter once. Inject the drug into the patient's bladder and keep the drug in the bladder for 0.5 to 2 hours. However, the disadvantage of this method is that because the drug is injected into the patient's bladder once through the catheter, the drug is not continuous during the perfusion process, and the drug will be excreted in a short period of time due to the limitation of the patient's bladder capacity. , shortening the retention time of the drug in the bladder, especially for patients with interstitial cystitis, it is more likely that...

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Problems solved by technology

However, the disadvantage of this method is that because the drug is injected into the bladder of the patient at one time through the catheter, the drug is not continuous during the infusion process, and the drug will be excreted in a short period of time due to the limitation of the bladder capacity of the patient. , shortening the retention time of the drug in the bladder, especially for patients with interstitial cystitis, it is more likely that the drug effect will be insufficient due to the short contact time between the bladder mucosa and the drug, thereby affecting the curative effect and causing waste of the drug; At the same time, because the drug is injected into the bladder of the patient at one time through the catheter, the concentration of the drug is high. In the preventive infusion chemotherapy of bladder cancer, the high concentration of chemotherapy drugs will greatly stimulate the bladder, which may cause burns of the bladder mucosa and form a chemical reaction. Cystitis, symptoms such as frequent urination, urgency, painful urination and hematuria

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