Silicone Foley Catheter

The present invention relates to a silicone foley catheter

, and more specifically, a catheter which can be continuously or temporarily retained inside a blood vessel or the like of a patient so that medication liquid such as carcinostatic substance can be injected in an appropriate manner.

Conventionally, when medication liquid such as a carcinostatic substance is to be dosed to a patient, the medication liquid is generally injected into a blood vessel of the patient's body by using a syringe or an instillator. However, in this conventional method, there is a problem that the medication liquid affects not only cancer cells but also normal cells because the liquid is circulated throughout the body through the blood vessels.

Therefore, there has been an attempt to insert a silicone foley catheter into a blood vessel through the skin and the front end of the catheter is located at the inlet position of the arterial canal extending to an internal organ having cancer, so that the medication liquid is directly injected into the internal organ having the cancer and a significant carcinostatic effect is achieved with a relatively small amount of dose.

In this attempt, after the catheter has been inserted into the patient's body such that the front end of the catheter is located at the inlet position of the arterial canal extending to the targeted internal organ, the base portion side of the catheter is fixed on the patient's body so that the front end of the catheter should not move from the determined inlet position during the injection of the medication liquid.

However, in this conventional method, although the base portion side of the silicone foley catheter is fixed on the patient's body, the front end portion of the catheter could move from the determined position during the injection due to, for example, movement of patient's body during sleep, resulting in flow of the medication liquid to some internal organs other than the targeted one.

by: ericfu

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