The present invention discloses a catheter system, comprising: a catheter head having a lumen, a proximal end and a distal end, and an opening positioned at a bottom of the distal end; and a rotatable inner tube having a lumen positioned in the lumen and at a proximal end of the catheter head, the inner tube including a front end having an arcuate opening; wherein the rotatable inner tube can be rotated so that the arcuate opening thereon can be made to engage or disengage with the opening at the bottom of the distal end of the catheter head. The invention also provides a catheter system and method for re-entry of a vascular false lumen into a true lumen in a quick, accurate and low-risk way. The catheter system for re-entry of a vascular false lumen into a true lumen in a quick, accurate and low-risk way effectively solve the problems of difficult operation, inaccurate positioning, long operation time and easiness to cause acute occlusion and internal hemorrhage of the branch vessel when the guidewire is re-entering the true lumen in the prior art.

The present disclosure relates generally to materials and medical devices impregnated with antimicrobial compounds. More specifically, the materials are medical matrix materials comprising nanopores or nanochannels in which the antimicrobial compounds are disposed. In other embodiments, medical matrix materials comprises nanomaterials and antimicrobials distributed throughout the material. The materials described herein are useful for a broad spectrum of medical devices and consumer products. The present disclosure further provides methods of making the antimicrobial materials and medical devices disclosed herein.

A catheter assembly is constructed by reflow bonding an inner liner and an outer layer. The inner liner defines at least one lumen. The inner liner is made of a gamma-irradiated polymeric material that includes a polyether block amide and a gamma radiation activated cross-linking agent.

A catheter is made by coextruding first and second molten polymers, wherein the second molten polymer forms a flexible inner core and the first molten polymer forms exactly two bands on opposite sides of the inner core. The inner core is braided, and a third molten polymer extruded onto the braid to form a flexible jacket that encloses the braid, the bands and the inner core. The bands are more rigid than the inner core, and they provide preferential in-plane bending.

A catheter having a proximal end portion having gaps between axially adjacent portions of an element wire where an inner layer is joined to an outer layer through the gaps; and a distal end portion where the axially adjacent portions of the element wire come into contact with each other, and a cavity is provided between the inner layer and a coil body. The catheter has excellent followability to a guide wire and is capable of efficiently transmitting a pushing force and/or rotational force from an operator to the distal end of the catheter.

The present invention pertains to medical devices. More specifically, the present application is related to an aspiration catheter for a medical clot removal system and to a clot removal system comprising such an aspiration catheter. An aspiration catheter for a clot removal system has a distal section and a proximal section, wherein, in the distal section, a ratio of an outer diameter (D.sub.d) and an open lumen inner diameter (ID) is in a range between 1.05 and 1.09, and wherein a volume of the aspiration catheter is in a range between 0.2 cubic inches and 0.4 cubic inches.

A catheter assembly includes an outer shaft having an outer shaft body forming an outer shaft bore that receives an inner shaft. The outer shaft has a wire transition section. The catheter assembly includes an exit path connector coupled to the outer shaft body at the wire transition section. The exit path connector has a rigid body section separate and discrete from the outer shaft body and coupled to the outer shaft body. The body section defines an exit path connector bore that receives the inner shaft. The body section has a side exit port at a side of the body section being open to the exit path connector bore. The catheter assembly includes a catheter wire passing through the side exit port from an interior to an exterior of the cable exit port.

A steerable sheath includes an inner liner extending from a proximal end to a distal end of the steerable sheath. The inner liner includes a non-deflectable portion and a deflectable portion. The steerable sheath includes a first pull wire positioned along a first helical path around the circumference of the inner liner from a proximal end to a distal end of the non-deflectable portion of the inner liner and along a first straight path from a proximal end of the deflectable portion to a distal end of the deflectable portion. The steerable sheath includes a second pull wire positioned along a second helical path around the circumference of the inner liner from the proximal end to the distal end of the non-deflectable portion and along a second straight path from the proximal end of the deflectable portion to the distal end of the deflectable portion.

The invention provides an intermittent catheter comprising a hollow polymeric tubular body comprising a base polymer and further comprising an amphiphilic additive at and/or on an outer surface of the body, wherein one or both of the base polymer and the additive are independently cross-linked and/or the base polymer and additive are cross-linked with each other.

An intermittent urinary catheterisation assembly (1) for self-catheterisation comprises an intermittent urinary catheter (5) comprising a catheter tube. The catheter further comprises a conduit (4) extending longitudinally within the catheter tube and defining at least part of a flow path from a distal insertion end of the catheter to a proximal outlet end thereof, a measuring system for determining at least one fluid parameter in the flow path. The measuring system comprises at least one sensor element (35) configured to determine the at least one fluid parameter in the conduit and/or in a space in communication with the conduit and a signal processing device. In one aspect, the signal processing device comprises is detachable secured in relation to the connecting portion of the intermittent urinary catheter. In another aspect, the measuring system is securely connected to or integrated with the non-insertable portion of the catheter tube.