Abstract:
A dialysis catheter includes an entirely subcutaneous first section, with an exterior interface via penetration of the overlying subcutaneous skin layer. In addition the first section of the dialysis catheter includes a detachable portion that enables insertion via a guidewire instead of a peel-away sheath. The dialysis catheter has a layered design that minimizes risk of infection.
Abstract:
An intraventricular access device 100 may include more than one catheter 110 and a container 120. The catheter may include an aspiration lumen 110a and an infusion lumen 110b. A distal end of the intraventricular portion of the catheter may be positionable, during use, in a subject's brain fluid. The container may be coupled to a proximal end of the aspiration lumen. The proximal end of the aspiration lumen may be in fluid communication with the container. The proximal end of the infusion lumen may be in communication with an infusion pump. The device inhibits cross contamination between a first fluid in the aspiration lumen and a second fluid in the infusion lumen. The container may include a barrier positioned between a proximal opening of the aspiration lumen and at least a portion of the infusion lumen adjacent to and/or associated with the container.
Abstract:
A matter elimination catheter includes a catheter body extending from a catheter proximal portion to a catheter distal portion. The catheter body includes an infusion lumen, an aspiration lumen fluidly isolated from the infusion lumen, and a septum interposed between the infusion and aspiration lumens. A drive shaft is within the infusion lumen and is configured to provide rotation near the catheter distal portion. A guide wire lumen is within the drive shaft, and the infusion lumen, the drive shaft and the guide wire lumen are fluidly separated from the aspiration lumen with the septum. In one example, fluid bearings are formed between one or more of the catheter body and drive shaft or the drive shaft and a guide wire or guide wire liner when supplied with infusion fluid through the infusion lumen.
Abstract:
Embodiments may include extracorporeal cooling of cerebrospinal fluid (CSF) or circulating heat transfer fluid within a catheter in the CSF-containing space.
Abstract:
Dispositif de canule (1) pour la circulation du sang dans un poumon artificiel caractérisé en ce qu'il comprend : - une première lumière (LA), dite lumière d'aspiration, comprenant au moins un orifice permettant l'aspiration d'un volume de sang; - une seconde lumière (Ll), dite lumière d'injection, comprenant au moins un orifice permettant l'injection d'un volume de sang, caractérisée en ce que la lumière d'injection (Ll) et la lumière d'aspiration (LA) sont maintenues solidaire sur au moins une portion de leur longueur, lesdites lumières étant étanches l'une de l'autre, la lumière d'injection (Ll) comportant un élément déformable (STN) maintenu sur une portion de son extrémité distale, ledit élément déformable (STN) comportant un premier agencement dit de « passage » et un second agencement dit « de maintien », le passage du premier agencement au second agencement s'effectuant par une modification du diamètre dudit élément déformable (STN).
Abstract:
A veno-arterial extracorporeal membrane oxygenation system includes a dual lumen drainage cannula configured for withdrawing blood from a patient's vasculature in a manner that provides a perfusion of oxygenated blood with reduced carbon dioxide content while unloading the left ventricle, with two points of access to the patient's vasculature. The dual lumen drainage cannula has a first drainage tube and a second drainage tube co-axially aligned with the first drainage tube. The first and second drainage tubes are fluidly coupled to a connector. A blood pump having a pump inlet is configured for fluidly connecting with the connector, while an oxygenator having an oxygenator inlet is configured for fluidly connecting with a pump outlet. An infusion cannula is configured for fluidly connecting with an oxygenator outlet for infusing oxygenated blood into a patient's bloodstream.
Abstract:
A convection enhanced delivery device (10) comprises a support member (12) and an elongated microcatheter (14) carried by the support member. The microcatheter projects lengthwise away from the support member. The microcatheter includes a catheter lumen extending in a first direction. A fluid conduit (16) carried by the support member. The fluid conduit includes a conduit lumen that extends in a second direction different than the first direction. The conduit lumen is in fluid communication with the catheter lumen. An inlet port (18) and a connecting port (20) are also carried by the support member. The inlet port is in fluid communication with the fluid conduit. The connecting port is separate from the inlet port and is in fluid communication with the fluid conduit. The connecting port is configured to engage an end portion of an external fluid conduit such that the external fluid conduit projects away from the connecting port and from the support member.
Abstract:
Catheter apparatuses, systems, and methods for introducing a catheter into a patient's body. In one embodiment, a catheter apparatus includes a catheter body having a first lumen capable of fluid communication via a first distal opening and a second lumen capable of fluid communication via a second distal opening, a first intra-catheter stiffener element for disposition through the first lumen such that a distal end thereof is distal in relation to the first distal opening, and a second intra-catheter stiffener element configured for disposition through the second lumen such that a distal end thereof is distal in relation to the second distal opening, one of the first intra-catheter stiffener element distal end and the second intra-catheter stiffener element distal end capable of receiving and accommodating the other of the first intra-catheter stiffener element distal end and the second intra-catheter stiffener element distal end.
Abstract:
The invention provides a catheter for placement within a vessel of a patient. The catheter comprises an elongated catheter body, a septum extending longitudinally through the interior of the catheter body from the dividing the interior of the catheter body into a first lumen and a second lumen. Each lumen has curved or angled internal walls at the distal end of the catheter that terminate at ports located on opposing sides of the catheter body. The invention also provides a method for exchanging fluids in a patient comprising the step of positioning the catheter of the present invention in communication with a fluid-containing vessel of a patient. The method is particularly well-suited for hemodialysis, plasmapheresis, and other therapies which require removal and return of blood from a patient.