Patent ID: 8721522
Filing Date: 2014-05-13
Classification: A61F

Abstract:
1. An apparatus for tightening a biological organ that forms at least one of a pouch and a duct to change a cross-section of flow into said biological organ, said apparatus comprising: an implantable surgical ring having an open state and a closed state, wherein in said closed state, said implantable surgical ring forms a closed loop having an extension-medium axis, wherein said implantable surgical ring comprises: wherein said first ring-tightening chamber is attached to said second ring-tightening chamber, wherein said first and second ring-tightening chambers are configured to accommodate filling fluid, wherein said implantable surgical ring is configured to transition into a filling-fluid inflated state in which said implantable surgical ring tightens said biological organ by filling said first and said second ring-tightening chambers with filling fluid, wherein said first and second ring-tightening chambers are stepped along said extension-medium axis to an extent sufficient to avoid contacting each other when said surgical ring has transitioned into said filling-fluid inflated state, wherein, when said implantable surgical ring is in said filling-fluid inflated state, in which said implantable surgical ring is tightening said biological organ, said first ring-tightening chamber is configured to contact said biological organ along a first contact area, and said second ring-tightening chamber is configured to contact said biological organ along a second contact area, said first contact area being axially separate from said second contact area, there being a material-free clearance area between said first contact area and said second contact area, wherein said implantable surgical ring is configured to enable said biological organ to move without contacting said implantable surgical ring.