The Charles Stark Draper Laboratory, Inc.

University of South Florida

Sri International

Kevin Andrew Hufford

Joseph L Charest

Christopher M DiBiasio

Stuart Richard Hart

Philip James Hipol

James Hsiao

Jeffrey T Borenstein

Daniel I Harjes

Ernest Soonho Kim

Mario Alves Simoes

Francy Lorena Sinatra

Alfredo Weitzenfeld

Mark Xavier Sweeney

Thomas P Low

Susana Lai-Yuen

Christopher V Trainor

Gerard Michael DiLeo

Gerard Michael Dileo

Susana K Lai Yuen

A multi-lumen catheter includes a primary lumen having a proximal end and a tip and a secondary lumen parallel to the primary lumen. The primary lumen and the secondary lumen share a wall. A port is defined in the wall proximate the tip of the primary lumen and provides fluidic communication between the primary lumen and the secondary lumen.

Seeping flow anti-clotting blood catheter

A catheter includes an elongated tube having a distal end and a proximal end. The elongated tube includes porous material having an interior and an exterior face. The interior face defines a lumen along a central axis of the elongated tube. The porous material is configured to flow a fluid between the interior face and the exterior face and to seep the fluid out of the porous material through the exterior face and interior face. A lining covers at least a portion of the exterior face and substantially limits perfusion through the exterior face at the portion of the exterior face covered by the lining. The catheter is impregnated with a material that prevents buildup of material on one of an inner face or an outer face of the catheter or the lining is coated with one or more of an anticoagulant, antibiotic, or antithrombotic.

An compact hydraulic manifold for transporting shear sensitive fluids is provided. A channel network can include a trunk and branch architecture coupled to a bifurcation architecture. Features such as tapered channel walls, curvatures and angles of channels, and zones of low fluid pressure can be used to reduce the size while maintaining wall shear rates within a narrow range. A hydraulic manifold can be coupled to a series of microfluidic layers to construct a compact microfluidic device.

Compact hydraulic manifold structure for shear sensitive fluids

The device and methods described herein relate to a seeping flow catheter. The seeping flow catheter includes a porous material. The inner face of the porous material defines the lumen of the catheter. The porous material is configured such that fluid can flow along the length of the catheter, between the inner face and outer face of the porous material. As the fluid flows through the porous material, the fluid can seep into the lumen of the catheter through the inner face or out of the catheter through the outer face of the porous material. Portions of the inner or outer face can include a lining that substantial reduces the perfusion of the fluid through the lined areas.

An electronic catheter stethoscope measures and analyzes acoustic fields and dynamic pressure variations in the gaseous or liquid fluid inside a conventional medical catheter that is positioned in a patient's urologic, digestive, reproductive, cardiovascular, neurological or pulmonary system. Measurement transducers are installed in a housing connectable to multiple preselected medical catheters. The transducers detect bodily functions that are transmitted to the preselected catheter from within the body. The transducers, housing, electrical interface and signal processing electronics are positioned outside the body.

Electronic catheter stethoscope

The present disclosure describes a catheter guide tool. More particularly, the catheter guide tool is a bi-stable device used for the insertion and advancement of a catheter. The catheter guide tool includes a gimbal. A guide axis runs through the gimbal. A catheter advancement mechanism is coupled to the gimbal and configured to advance the catheter along the guide axis. The guide tool also includes a pivot assembly coupling the gimbal to a support platform. The pivot assembly is configured to pivot the guide axis from a first position perpendicular to a target surface to a second position tangential to the target surface along a single primary plane of rotation of the gimbal.

Guide tool for catheter insertion

A laparoscopy tool includes a sheath and a control wire slideably disposed within a lumen of the sheath. The sheath has a diameter of less than 1.6 mm and is introduced through an abdominal incision. A handle axially displaces the control wire within the lumen and operates a conventional tip with wire-controlled opposing jaws that is introduced through the umbilicus and has a bore formed in its trailing end. A first set of blades in the bore engage grooves formed in the leading end of the control wire and a second set of blades engages the sheath to prevent sheath retraction. A cam displaces the second set of blades away from the sheath for sheath introduction and removal, and toward the sheath to prevent sheath retraction. The tip is removed through the umbilicus and the tool is removed through the abdominal incision when the surgery is completed.

Small diameter laparoscopic tool having releasable tip

Biodynamic feedthrough in a master control system can be mitigated. An accelerometer is used to measure the acceleration of an environment. In one embodiment, mitigation damping forces can then be determined based on the velocity of an effector of a haptic manipulator and the measured accelerations. The haptic manipulator applies the mitigation damping forces as force feedback. In another embodiment, biodynamic feedthrough can be filtered from the input signal. Parameters for a model can be accessed based on the position of the effector, and the model can be used to predict biodynamic feedthrough from the measured accelerations.

Growing community of inventors

St. Petersburg, FL, United States of America

Kevin Andrew Hufford