초록 ▼

A valve having two elements each with a respective passageway, with one of the elements having a support and the other element having a shoulder, and a disc mounted between the elements and partially flexed over the support to form a seal on the shoulder preventing flow between the passageways until

A valve having two elements each with a respective passageway, with one of the elements having a support and the other element having a shoulder, and a disc mounted between the elements and partially flexed over the support to form a seal on the shoulder preventing flow between the passageways until a relative pressure differential between the passageways fully flexes the disc over the support to allow flow between the passageways.

대표청구항 ▼

A normally closed aspiration valve device comprising: a first body element having a first passageway therethrough and a shoulder disposed in an inner wall thereof; a second body element having a second passageway therethrough, a support member and a means for syringe attachment, said second body ele

A normally closed aspiration valve device comprising: a first body element having a first passageway therethrough and a shoulder disposed in an inner wall thereof; a second body element having a second passageway therethrough, a support member and a means for syringe attachment, said second body element attached to said first body element; and a flexible valve disc having a top surface, said disc mounted between said first and second body elements with said disc partially flexed, said first and second body elements and said disc forming a one-way valve, wherein said top surface of sale disc forms an annular seal with said shoulder preventing flow of a fluid between said first and second passageways, and wherein a fluid pressure drop in said second passageway increases the relative pressure in said first passageway such that said disc is further flexed away from said shoulder and allows fluid from said first passageway into said second passageway.