Controlled deformation catheters
First Claim
1. A catheter comprising a catheter body which extends from a proximal end to a distal end, along a longitudinal direction (X-X),the catheter body comprising a core embedded inside an outer covering layer, which is flexible being a hollow tubular body which defines a lumen,the core comprising a plurality of pairs of ribs which extend inside said outer covering layer, wherein said ribs extend from an attachment end, at which they connect to each other, to a free end, opposite the attachment end, wherein the line joining the attachment ends of the pairs of ribs defines a dorsal side of the catheter body,wherein the free ends of the ribs coupled in the same pairs are separate from each other, identifying at least one discontinuity of said ribs, said discontinuity being positioned on a ventral side, opposite said dorsal side,and wherein, a first plane (P) being defined perpendicular to a longitudinal element and passing through the attachment end of a rib, and a second plane (Q) being defined passing through the free end and through the attachment end of the same rib, said planes (P, Q) are inclined to each other so as to form an acute angle (A) on the side of the proximal end or of the distal end.
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Accused Products
Abstract
Catheters are provided which have a high capacity of axial (pushability) and rotational (torquability) movement with relative maximum flexibility and which, at the same time have the ability to adapt to at least partial variations of diameter under the thrust of other catheters or dilators travelling though the lumen or so as to flatten itself at least partially to travel through the lumen of other catheters, such as for example feed catheters.
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Citations
22 Claims
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1. A catheter comprising a catheter body which extends from a proximal end to a distal end, along a longitudinal direction (X-X),
the catheter body comprising a core embedded inside an outer covering layer, which is flexible being a hollow tubular body which defines a lumen, the core comprising a plurality of pairs of ribs which extend inside said outer covering layer, wherein said ribs extend from an attachment end, at which they connect to each other, to a free end, opposite the attachment end, wherein the line joining the attachment ends of the pairs of ribs defines a dorsal side of the catheter body, wherein the free ends of the ribs coupled in the same pairs are separate from each other, identifying at least one discontinuity of said ribs, said discontinuity being positioned on a ventral side, opposite said dorsal side, and wherein, a first plane (P) being defined perpendicular to a longitudinal element and passing through the attachment end of a rib, and a second plane (Q) being defined passing through the free end and through the attachment end of the same rib, said planes (P, Q) are inclined to each other so as to form an acute angle (A) on the side of the proximal end or of the distal end.
Specification