摘要:
The invention relates to stents made of a material with an elongation at rupture of 30% or less and with a tubular base body which entirely or in parts comprises structural segments which are interconnected in longitudinal direction of the stents by means of transverse connectors and in which the structural segments comprise a zigzagging or undulating structure of a brace which is wrapped around the longitudinal axis of the stent. Due to the mechanical properties of the materials used, adaptation of the stent design is required. This is achieved in that in a turning region of the zigzagging or undulating structure the brace comprises a straight bending section aligned in circumferential direction.
摘要:
A stent is provided having a base body circumscribing a cylindrical shape and radially expandable from a contracted starting position into a dilated support position, including a plurality of meander-shaped struts disposed in the circumferential direction and arrayed on one another in the axial direction, each strut being meander-shaped in its coarse structure and made of a flexible material, and at least one axial connector in the axial direction, connecting the meander-shaped struts of two axially adjacent meandering curves, wherein the at least one axial connector connects the inside radius of a zenith point of a first meandering curve with a second meandering curve, characterized in that the at least one axial connector at the inside radius of the zenith point of the first meandering curve has an at least double-arm structure.
摘要:
A stent comprising a tubular base body having a lumen along a longitudinal axis. The base body has a plurality of circumferential support structures and one or more connectors. Two successive circumferential support structures are connected to one another via at least one connector. The stent is characterized in that one, multiple, or all support structures and/or connectors have a slotted passage, and the slotted passage is filled with a radiopaque material and has a curvature which increases at least toward one end of the slotted passage.
摘要:
A device for the minimally invasive insertion into a lumen of a hollow organ comprises a hose-shaped wall (3) with a multiplicity of piezoelectric fibers (4) embedded therein.
摘要:
The invention relates to stents made of a material with an elongation at rupture of 30% or less and with a tubular base body which entirely or in parts comprises structural segments which are interconnected in longitudinal direction of the stents by means of transverse connectors and in which the structural segments comprise a zigzagging or undulating structure of a brace which is wrapped around the longitudinal axis of the stent. Due to the mechanical properties of the materials used, adaptation of the stent design is required. This is achieved in that in a turning region of the zigzagging or undulating structure the brace comprises a straight bending section aligned in circumferential direction.
摘要:
A medical implant (10a, 10b), in particular a stent (12a, 12b), for implantation in an animal body and/or human body (14a, 14b), comprising a base body (16a, 16b) which includes at least two segments (18a, 18a′, 18b, 18b′; 20a, 20a′, 20b, 20b′) having at least two deflection points (24a, 24b; 26a, 26b) that are diametrically opposed in the axial direction (22a, 22b), and at least one adjusting means (28a, 28b; 30a, 30b) that acts on the deflection points (24a, 24b; 26a, 26b) to adjust an extension (32a, 32b) of the base body (16a, 16b) in the circumferential direction (34a, 34b).
摘要:
A medical implant (10a, 10b), in particular a stent (12a, 12b), for implantation in an animal body and/or human body (14a, 14b), comprising a base body (16a, 16b) which includes at least two segments (18a, 18a′, 18b, 18b′; 20a, 20a′, 20b, 20b′) having at least two deflection points (24a, 24b; 26a, 26b) that are diametrically opposed in the axial direction (22a, 22b), and at least one adjusting means (28a, 28b; 30a, 30b) that acts on the deflection points (24a, 24b; 26a, 26b) to adjust an extension (32a, 32b) of the base body (16a, 16b) in the circumferential direction (34a, 34b).It is provided that an axial distance (36a, 36b) between the two deflection points (24a, 24b; 26a, 26b) can be shortened using the adjusting means (28a, 28b; 30a, 30b).
摘要:
The invention concerns a stent comprising a longitudinal axis (12) and a peripheral wall (14) which is formed at least over a part of the length of the stent (10) by a lattice-like carrier structure (24) which is open at two ends. The carrier structure includes at least one bar (16) extending helically around the longitudinal axis in such a way as to provide a helical primary shape (26) for the peripherally extending bar with more than one helical turn. Besides the helical primary shape (26) the bar has a zigzag-like or meander-shaped secondary shape (30) with reversal points and associated reversal portions (32), between which extend bar portions (34) of the peripherally extending bar with an extension component in the longitudinal direction of the stent. The carrier structure further includes connecting bars (40) which respectively bridge over a helical turn of the helical primary structure and which at their two longitudinal ends attach to the bar portions (34) of the helical primary shape between two respective adjacent reversal points.
摘要:
A medical supporting implant, in particular a stent, comprises a tubular base body which is made up of bendable struts (2), such that at node points (4) of at least two struts (2), the bendable struts (2) form an acute angle (W) to one another which angle becomes larger on dilatation of the implant with plastic deformation of the struts (2) at the node point (4). At least a portion of the struts (2) between the plastic deformation areas (4) is provided with a telescoping ratchet mechanism (R) for irreversible lengthening of the respective struts (2) on dilatation.
摘要:
A stent is provided having a base body circumscribing a cylindrical shape and radially expandable from a contracted starting position into a dilated support position, including a plurality of meander-shaped struts disposed in the circumferential direction and arrayed on one another in the axial direction, each strut being meander-shaped in its coarse structure and made of a flexible material, and at least one axial connector in the axial direction, connecting the meander-shaped struts of two axially adjacent meandering curves, wherein the at least one axial connector connects the inside radius of a zenith point of a first meandering curve with a second meandering curve, characterized in that the at least one axial connector at the inside radius of the zenith point of the first meandering curve has an at least double-arm structure.