Devices for retrieving an obstruction in a bodily duct of a patient

A device for capturing and removing an obstruction in a bodily duct of a patient, the device comprising:

• a cylindrical body having a circumference and a longitudinal axis and including a plurality of closed cell structures arranged in a plurality of diagonal rows disposed around the longitudinal axis, at least some of the plurality of closed cell structures being substantially the same shape and size, the at least some of the plurality of closed cells structures of substantially the same shape and size including a first and second cell structures that occupy a same circumferential location in the cylindrical body, the first and second cell structures being longitudinally separated from one another by no less than two diagonal rows of closed cell structures, the second cell structure being located nearer the first cell structure than any of another of the at least some of the plurality of closed cell structures of substantially the same shape and size that are also longitudinally aligned with the first cell structure,
• the plurality of closed cell structures each includes first, second, third, fourth, fifth and sixth struts, each of the first, second, third, fourth, fifth and sixth struts having a proximal end and a distal end, the proximal end of the first strut being coupled to the proximal end of the second strut, the distal end of the third strut being coupled to the distal end of the fourth strut, the distal end of the first strut being coupled to the proximal end of the fifth strut, the proximal end of the third strut being coupled to the distal end of the fifth strut, the distal end of the second strut being coupled to the proximal end of the sixth strut, the proximal end of the fourth strut being coupled to the distal end of the sixth strut,
• the proximal and distal ends of the fifth strut are longitudinally aligned with one another and reside at a first circumferential location, the proximal and distal ends of the sixth strut being longitudinally aligned with one another and residing at a second circumferential location, the second circumferential location being spaced apart from the first circumferential location.