Abstract: A piercing device includes a tube (10) formed with a needle tip (12). The needle tip (12) includes a bevel having a bevel length (BL) that extends at a bevel angle from a base of a heel (14) to a sharp distal, radially outer edge of the needle tip (12). A reversed edge (17) is formed as a reversed edge angle on the heel (14) of the bevel. The bevel angle is an acute angle, and the reversed edge angle is an obtuse angle.

Abstract: The invention relates to a double stent comprising two coaxially arranged stents (2, 3), wherein a first membrane (4) being arranged between a first inner stent (2) and the second outer stents (3), and a second membrane (5) being arranged on the second stent (3), with the membrane ends of the first and second membrane (4, 5) being brought together at the ends of the stents (2, 3) and folded over onto the inside of the first stent (2) and secured/fixed there.

Abstract: The invention relates to an introducer sheath for catheters to be inserted into a vascular system comprising a connecting valve (2) and an insertion tube (3) having a proximal portion (4) and a distal portion (5), said distal portion (5) being of reduced diameter in comparison with the proximal portion (4), and to enable its diameter to be reversibly changed the insertion tube (3) is provided with longitudinally extending expansion elements with incisions (11, 11?, 12) designed as predetermined breaking points.

Abstract: The invention relates to a medical device delivery system comprising a catheter shaft having a proximal end and a distal end portion; an expandable member provided at the distal end portion of the shaft, the expandable member having a delivery configuration and a deployed configuration; the expandable member being folded around the catheter shaft in its delivery configuration; characterized in that a coating is disposed on at least a portion of the outer surface area of the expandable member in its delivery configuration such that the coating does not cover portions of the expandable member located inside the folds of the expandable member in its delivery configuration; and an expandable medical device is mounted on the expandable member in the delivery configuration with the coating being disposed between the expandable member and the expandable medical device.

Abstract: The invention relates to a balloon catheter, in particular for the widening of stents in fenestrations and for T-branch protheses, being provided with a balloon (4), a supply line in the catheter (2) leading to the balloon (4), which allows the balloon (4) to be pressurized, and a central lumen (3) for a guidewire, with the balloon (4) in the expanded state having at least two areas (P, D, M) of different diameter, with these areas merging into one another by forming a step.

Abstract: The invention relates to a medical device, the medical device comprising a balloon catheter, a first stent, and a second stent; the balloon catheter having a shaft and an inflatable balloon mounted to the shaft at the distal end the balloon having a distal portion having a first outer diameter and a proximal portion having a second outer diameter, wherein the first diameter is smaller than the second diameter and a transition region located between the distal portion and the proximal portion, a first stent having a first nominal diameter mounted on the distal portion of the balloon and a second stent having a second nominal diameter mounted on the proximal portion of the balloon, a distal portion of the second stent overlapping a proximal portion of the first stent, wherein the proximal end of the first stent is positioned proximal to the distal end of the second stent, the medical device further comprising a pre-cannulation means providing a passage from the interior of the second stent to the exterior of th

Abstract: The invention relates to a release system for a self-expanding endoprosthesis, comprising a catheter, an endoprosthesis (2) having a first volume-reduced shape under an external constraint and, after elimination of the external constraint, assuming a second expanded shape at the placement site and being movably arranged in the catheter, a means for holding (6, 7) the endoprosthesis (2) in the catheter as well as means suitable to exert the external force on the endoprosthesis (2), wherein the means for exerting the external force on the endoprosthesis (2) is a tubular film (3) whose distal end encloses the endoprosthesis (2) in its reduced-volume form and whose proximal end extends to the proximal end of the catheter in such a way that it can be withdrawn from the endoprosthesis (2) thus eliminating the external constraint.

Abstract: Stent graft consisting of a stent (1) comprising a plurality of ring segments (3, 4) having a meandering configuration arranged side by side and connected with each other by connecting webs (6), and at least one membrane (2) covering the entire outer side of the stent (1), being wrapped inwards around the ends of the stent and fixed between loops of ring segments (4) and connecting webs (6) that join the adjacent ring segments (3, 4) with each other, wherein the membrane (2) is fixed between at least two loops of the second ring segment (4), viewed from the ends of the stent (1), and the connecting webs (6) to the neighboring terminal ring segment (3).

Abstract: Stent graft comprising a stent (1) having a plurality of ring segments (3) arranged side by side and connected with each other by connecting webs (7) having a meandering pattern, and at least one membrane (2), characterized in that a plurality of connecting webs (7) between adjacent ring segments (3) are provided with flexible tongues (6), which are arranged in a form-closed manner in the connecting webs (7) and which are resiliently movable against the connecting webs (7), wherein the membrane (2) being clamped between flexible tongues (6) and connecting webs (7).

Abstract: The invention relates to a chimney stent graft with a tubular stent graft body (2) and at least one sealing element (3), wherein the sealing element (3) encloses the stent graft body (2) in a middle section and the sealing element (3) comprises a sponge- and/or tangle-like, elastic structure. The sealing element (3) provides for sealing of the gap forming between the chimney stent graft (1) and the vessel wall or further parallel stent grafts, resp., and thus prevents leakage.

Abstract: The invention relates to a balloon catheter, in particular for the widening of stents in fenestrations, being provided with a first inner balloon (4), a second outer balloon (5), with said second balloon (5) completely enclosing the first balloon (4), separate supply lines in the catheter (2) leading to the first (4) and second balloon (5), which allow the balloons (4, 5) to be pressurized independently of one another, a central lumen (3) for a guidewire, wherein in the expanded state, both balloons (4, 5) in the proximal region (P) have a diameter which is enlarged in relation to that of the distal region (D).

Abstract: Vascular stent, in particular made of an in vivo degradable plastic material, having individual ring segments (2), the webs (4) of which are of meandering configuration, and comprising connecting webs (3) arranged between adjacent ring segments (2), said webs converging in connection points (7) with the webs (4) of the ring segments (2), with recesses (9a, 9b) being arranged at angles of the connection points (7) that are compressed when the vascular stent (1) is expanded, said recesses being open towards the edge and extending through the ring segment webs (4) and connecting webs (3), with a view to reducing stresses arising during the expansion of the vascular stent (1).

Abstract: The invention relates to a double stent comprising 2 coaxially arranged stents, wherein a first membrane is arranged between a first inner stent and a second outer stent and a second membrane is arranged on the second stent and wherein the membrane ends of the first and second membrane are brought together at the ends of the stents and are folded over onto the inside of the first stent and clamped under flexible tongues of the first stent.

Abstract: The invention relates to an introducer sheath for catheters to be inserted into a vascular system comprising a connecting valve (2) and an insertion tube (3) having a proximal portion (4) and a distal portion (5), said distal portion (5) being of reduced diameter in comparison with the proxirmal portion (4), and to enable its diameter to be reversibly changed the insertion tube (3) is provided with longitudinally extending expansion elements with incisions (11, 11?, 12) designed to as predetermined breaking points.

Abstract: The invention relates to a stent (12) to be positioned in the bifurcation/branching (14) of a blood vessel (16), wherein the stent (12) is composed of a plurality of meshes (10) and has a distal (18) and a proximal end (20), characterized in that the stent is provided with a retaining element (22) that passes through oppositely arranged meshes (10) at the proximal end (20) of the stent (12).

Abstract: The invention relates to an introducer sheath for catheters to be inserted into a vascular system comprising a connecting valve (2) and an insertion tube (3) having a proximal portion (4) and a distal portion (5), said distal portion (5) being of reduced diameter in comparison with the proximal portion (4), and to enable its diameter to be reversibly changed the insertion tube (3) is provided with longitudinally extending expansion elements with incisions (11, 11?, 12) designed as predetermined breaking points.

Abstract: The invention relates to a release system for a self-expanding endoprosthesis, comprising a catheter, an endoprosthesis (2) having a first volume-reduced shape under an external constraint and, after elimination of the external constraint, assuming a second expanded shape at the placement site and being movably arranged in the catheter, a means for holding (6, 7) the endoprosthesis (2) in the catheter as well as means suitable to exert the external force on the endoprosthesis (2), wherein the means for exerting the external force on the endoprosthesis (2) is a tubular film (3) whose distal end encloses the endoprosthesis (2) in its reduced-volume form and whose proximal end extends to the proximal end of the catheter in such a way that it can be withdrawn from the endoprosthesis (2) thus eliminating the external constraint.

Abstract: The invention relates to a double stent comprising 2 coaxially arranged stents, wherein a first membrane is arranged between a first inner stent and a second outer stent and a second membrane is arranged on the second stent and wherein the membrane ends of the first and second membrane are brought together at the ends of the stents and are folded over onto the inside of the first stent and clamped under flexible tongues of the first stent.

Abstract: The invention relates to a balloon catheter, in particular for the widening of stents in fenestrations, being provided with a first inner balloon (4), a second outer balloon (5), with said second balloon (5) completely enclosing the first balloon (4), separate supply lines in the catheter (2) leading to the first (4) and second balloon (5), which allow the balloons (4, 5) to be pressurized independently of one another, a central lumen (3) for a guidewire, wherein in the expanded state, both balloons (4, 5) in the proximal region (P) have a diameter which is enlarged in relation to that of the distal region (D).

Abstract: Vascular stent, in particular made of an in vivo degradable plastic material, having individual ring segments (2), the webs (4) of which are of meandering configuration, and comprising connecting webs (3) arranged between adjacent ring segments (2), said webs converging in connection points (7) with the webs (4) of the ring segments (2), with recesses (9a, 9b) being arranged at angles of the connection points (7) that are compressed when the vascular stent (1) is expanded, said recesses being open towards the edge and extending through the ring segment webs (4) and connecting webs (3), with a view to reducing stresses arising during the expansion of the vascular stent (1).