Medicine circulating type bladder instillation device

Abstract

The invention provides a medicine circulating type bladder instillation device. The medicine circulating type bladder instillation device comprises an instillation tube body, wherein the body is provided with an airbag for fixing an instillation tube; the airbag is provided with an airbag injection hole; the body is internally provided with a medicine jet flow cavity and a reflowing cavity; the jet flow cavity is provided with a medicine flowing-out hole and is located between the airbag and a far end of the instillation tube body; a mushroom head is arranged at one end of the reflowing cavity and the reflowing cavity is internally provided with a negative-pressure cavity; a negative-pressure suction hole and a medicine sucking-back opening of the negative-pressure cavity are formed in a lower surface of the mushroom head; the negative-pressure cavity is communicated with the medicine reflowing cavity through the negative-pressure suction hole and a short tube connected with the negative-pressure suction hole; the sucking-back opening is connected with a buffering chamber; an instillation liquid bag is arranged between a medicine outlet of the reflowing cavity and an inlet of the jet flow cavity; a liquid inlet is connected with an outlet of the reflowing cavity; a liquid outlet is connected with the inlet of the jet flow cavity; the jet flow cavity is internally provided with a jet flow valve and the direction of the jet flow valve is the same as a medicine jet flow direction; the reflowing cavity is internally provided with a reflowing valve and the direction of the reflowing valve is the same as a medicine reflowing direction.

Description

technical field [0001] The invention belongs to the technical field of bladder catheters, in particular to a drug circulation bladder perfusion device. Background technique [0002] In the current drug circulation perfusion therapy for bladder tumors, the negative pressure in the catheter of the perfusion tube will cause great damage to the bladder mucosa, which will lead to bladder mucosa folds, ischemia, and even necrosis and exfoliation. [0003] Among urinary system tumors of bladder tumors in my country, bladder tumors occupy the first place in both morbidity and mortality, and the incidence has been increasing in recent years. Bladder tumors are caused by environmental influences and external risk factors, but they are also related to the patient's genetic basis. Timely and early diagnosis is of great significance to the treatment of bladder tumors. The vast majority of bladder cancers originate from epithelial tissue, and more than 90% are transitional cell carcinom...

AI Technical Summary

Problems solved by technology

At present, some continuous circulation hyperthermic perfusion chemotherapy devices in the bladder have complex structures and occupy a large space, which seriously affects the efficiency of bladder perfusion therapy.

[0005] However, although the curative effect of continuous intravesical hyperthermic perfusion chemotherapy is obviously better than that of chemotherapy alone, if the operation method is improper, the perfusion time is too long or the amount of chemotherapy drugs is too large.

In addition, due to the negative pressure in the catheter formed by the continuous circulation of liquid, it is very easy to cause the unfilled bladder mucosa to be sucked into the inner port of the catheter. The chemical cystitis caused by long-term ischemic pressure and drug stimulation will make the patient urinate frequently and urgently. , dysuria and hematuria symptoms aggravated, severe cases lead to bladder mucosa detachment and necrosis, causing systemic side effects of chemotherapy, it takes 2-4 weeks or even longer to return to normal, seriously affecting the continuity of bladder infusion chemotherapy

[0006] In addition, for some patients with long-term perfusion, especially female patients, due to the short length of their urethra, long-term drug stimulation may cause their urethral spasm and atrophy, and overflow of the urethral orifice often occurs during perfusion fluid circulation

For many elderly male patients, the prostatic hyperplasia protrudes into the bladder and causes the bladder neck to be elevated, and the air bag is often unable to effectively seal the bladder neck, which in turn leads to the outflow of infused chemotherapy drugs.

As we all know, chemotherapy drugs are extremely toxic, and they may cause irreversible toxic damage when they flow out of the body, which seriously affects the safety of intravesical infusion chemotherapy.

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