Radially expandable axially non-contracting surgical stent

Details Radially expandable axially non-contracting surgical stent Radially expandable axially non-contracting surgical stent

1996-12-24

1999-02-09

Lewis, William

Surgery

Instruments

Internal pressure applicator

606 1, 606108, 606191, 606194, 606200, 623 1, 623 12, 128899, A61M 2900, A61F 206

Patent

active

058687823

ABSTRACT:
A surgical stent (10) is provided which can be radially expanded away from a central axis (2) within a body lumen, such as an artery. The stent (10) is formed from a series of struts (20) circumscribing a cylindrical contour of the stent (10). Each strut (20) has a series of bends (30) formed therein with each bend including at least one trough (32) and at least one crest (36). Gaps (40) are provided between adjacent struts (20). Each gap (40) is spanned by an axial element such as a tie bar (50). Each tie bar (50) attaches to adjacent struts (20) through troughs (32) so that when the stent (10) is radially expanded, the struts (20) are not drawn together, but rather maintain their position and the stent (10) hence maintains its axial length without contracting. Other elements can alternatively be provided between adjacent circumferential elements to provide varying degrees of flexibility between adjacent struts (20).

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