DEVICE AND METHODS FOR MEMBRANE FILTER SUPPORT IN MEDICAL INFUSION SYSTEM Russian patent published in 2014 - IPC A61M5/165 A61M5/14 A61M5/38 A61M5/00 A61M39/28 

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to medical infusion systems, and more specifically to an integrated membrane filter support; a removable clip comprises a first bearing wall, a second bearing wall, and a blocking part. The first bearing wall has an internal surface, a first end and a second end opposite to the first end. The second bearing wall is opposite to the first bearing wall and has an internal surface, a first flange and a second end opposite to the first flange. The second end of the second bearing wall is rigidly and elastically connected to the first end of the first bearing wall to enable the first flange of the second bearing wall displacing towards the first bearing wall and therefrom. The blocking part is attached to the second end of the first bearing wall and constructed to couple and uncouple with the first flange of the second bearing wall. The clip is constructed to support a membrane filter case leaving filter vents open as the clip is assembled around the case, while the blocking part of the clip gears with the first flange of the second bearing wall of the clip, and as the filter is built into a fluid circuit. The filter case has a length that is a distance between a fluid inflow valve and a fluid outflow valve, and a width that extends approximately perpendicularly to the length, and a thickness. The filter case comprises a first side wall that comprises through vents nearby the inflow valve, and a second side wall attached to the first side wall along a case joint line. The first side wall comprises a first base surface, while the second side wall has a second base surface opposite to the first base surface. The first and second base surfaces are arranged on both sides of the joint line and face the respective surfaces of the first and second bearing walls of the clip, if the clip is assembled around the case. The case thickness is limited from the first base surface to the second bearing surface at the area surrounding a total perimetre of the specified surfaces, and makes a value lesser than the case length and width. The first bearing wall of the clip has a width that is limited from its first end to its second end. The width of the first bearing wall overlaps the width of the filter case, as the clip is assembled about the case. The internal surface of each of the first and second bearing walls of the clip is formed by a platform projecting inwards. Each platform has a width that is less than the width of the first bearing wall. The platforms are opposite each other and placed at a distance that is less than the case thickness, if the clip is assembled around the case, and the blocking part of the clip gears with the first flange of the second bearing wall of the clip. The clip is detachable from the case by uncoupling the blocking part with the first flange of the second bearing wall. A method for setting up the above membrane filter into the fluid circuit of a medical infusion system comprises the following stages. The membrane filter is set up between the coupled and opposite walls of the detachable clip. The internal surface of each of the opposite walls of the clip is fixed immediately adjacent to the respective base surface of the set-up filter by a simple push on at least one of the opposite walls of the clip to the other opposite wall. A first fluid piping system is attached to the inflow valve of the filter. A second fluid piping system is attached to the outflow valve of the filter. The medical infusion system for the radiopharmaceutical administration into a patient's body comprises the fluid flow circuit that supply pressure pulses from approximately 75 psi to approximately 125 psi, and a box. The box incorporates at least a portion of the fluid low circuit that in turn accommodates the above membrane filter. The filter case is surrounded by the above removable clip for supporting the case leaving the above filter vents open with the above clip and filter built in the box.

EFFECT: structural improvement.

15 cl, 4 dwg