Patent ID: 11865021
Assignee: Q3 MEDICAL DEVICES LIMITED
Field: Medical technology (Instruments)
Classification: CPC A  B | IPC A  B

Claim 0:
1. A bidirectional stent, comprising:
a cylinder-shaped stent body comprising a plurality of axially arranged rows of struts encircling a central lumen and a plurality of axially arranged alternating rows of s-shaped connectors and rows of opposite s-shaped connectors encircling the central lumen,
wherein openings are between each of the s-shaped connectors arranged in alternating rows, and
wherein each row of s-shaped connectors is flanked on both sides by rows of opposite s-shaped connectors and each row of opposite s-shaped connectors is flanked on both sides by rows of s-shaped connectors,
wherein each of said rows of struts consists of struts inter-connected to form a wave-pattern with alternating peaks and troughs, wherein each peak has a tip and each trough has a bottom,
wherein each peak in a row of struts is connected at its tip to a peak at its tip in an adjacent row of struts by an s-shaped connector or opposite s-shaped connector,
wherein said s-shaped connectors in the same row of said s-shaped connectors have the same configuration,
and
wherein when the stent is in a resting state, each peak in each row of struts is attached to one end of an s-shaped connector or an opposite s-shaped connector that is attached at its other end to a facing peak of an adjacent row with said facing peak being at an angle to said each peak, and each of said s-shaped connectors or opposite s-shaped connectors has a body having a continuous curve with an inflexion point, and
wherein when said stent is subject to twist, said rows of s-shaped connectors and opposite s-shaped connectors contract or expand in an alternating manner to form a peristaltic shape in said stent body, and said rows of s-shaped connectors or opposite s-shaped connectors that are contracting form a neck shape, and said rows of s-shaped connectors or opposite s-shaped connectors that are expanding form a peristaltic shape, and said neck shape has a lesser radius than the radius of the peristaltic shape at its greatest expanse, thus allowing said stent body to be reversibly twisted clockwise or counter-clockwise from one end of said stent body by a full turn without causing permanent deformation of said struts and said s-shaped connectors or opposite s-shaped connectors in said stent body.