Balloon infuser

Abstract

Abstract PURPOSE:To finely control the flow rate of a drug liquid and to reduce the remaining thereof, by providing a flow rate control part which has the pipe connected to the liquid drug outflow part of a cock part and having at least one fine hole formed to the side part thereof and closed at the leading end thereof on the downstream side thereof. CONSTITUTION:In a balloon infuser A, a filter 20 made of a synthetic resin is provided between the drug liquid outflow part 13 of a cock part (b) and the pipe 21 of a flow rate control part (c), and the pore size of the filter 20 is determined with due regard to the relation between said pore size and that of the pores formed to the pipe 21 of the flow rate control part (c). That is, the filter 20 is provided in order to prevent that the fine pores 22 formed to the pipe 21 are clogged by the foreign matter in a drug liquid and the drug liquid does not flow in a predetermined flow rate or does not flow at all in the worst case and it is necessary to make the pore size of the filter 21 smaller than that of the pores 22. When the pore size of the pores 22 of the pipe 21 is set to 60mum, the average pore size of the filter 20 is pref. 50mum or less.

Inventors

• 👤 Hajime Tsujikawa

Bibliographic Details