... assist via direct cardiac compression without abnormally inverting the curvature of the heart. The actions and features described above were mapped to particular design solutions and assessed in an acute implantation in an ovine model of acute heart failure (esmolol overdose). A balloon catheter...

... the line of any residual medication. The risk of infection due to the introduction of bacteria in the catheter hub is increased with the number of times the hub is accessed. In addition, the two-step process adds millions of nursing hours per year and is prone to error. The goal of this effort...

...Trevor Bruns; John Tucker; D. Caleb Rucker; Philip Swaney; Emad Boctor; E. Clif Burdette; Jessica Burgner; Robert Webster 15 06 2011 15 06 2011 catheters prosthetics surgery Concentric tube continuum devices, known as active cannulas, consist of multiple precurved elastic...

...Stephen Howard; Cory Kasprzak; Chris Rolfes; Paul A. Iaizzo 15 06 2011 15 06 2011 biomechanics biomedical materials blood vessels cardiovascular system catheters surgery Clinical access to the left atrium and/or to the left ventricle for medical device delivery, from...

...Chris Rolfes; Paul Iaizzo 14 06 2011 14 06 2011 cardiology catheters defibrillators drug delivery systems surgery A longstanding controversy in the field of cardiac surgery is whether or not to repair the pericardium on completion of open heart surgery. The device...

...Alex Ryan; George Mallin; Paul A. Iaizzo 14 06 2011 14 06 2011 biomechanics cardiovascular system catheters haemodynamics haemorheology In vivo animal models have been and remain the “gold standard” for medical device testing. However, these models sometimes present...

...Samuel B. Kesner; Robert D. Howe 13 06 2011 13 06 2011 biomedical ultrasonics cardiovascular system catheters surgery Cardiac catheters allow clinicians to minimally invasively interact with the beating heart without stopping the heart or opening the chest. However...

...Ryan Goff; Paul A. Iaizzo; John C. Bischof 13 06 2011 13 06 2011 biological tissues biomedical ultrasonics biothermics catheters radiation therapy temperature sensors This paper presents the preliminary development of a novel cryoablation catheter for the delivery...

...Alexander H. Slocum, Jr.; Anand Jagannath; Tyrel Waagen; Arvind K. Agnihotri; Robert A. Levine 13 06 2011 13 06 2011 bellows catheters diseases haemodynamics physiological models pulsatile flow surgery Percutaneous treatments for heart disease have created new...

... the gap between the air and the tube’s wall, the air bubbles slowly rise and allow urine to travel downward. The resistance of such film flow is significant and the urine may become stagnant or backflow, resulting in painful pressure on a sensitive part of the body. Bacterial colonization of catheters...

...) cryogel membranes were tested for their ability to stretch with uniaxial tension tests and for puncture strength with a modified ASTM method. Additionally, PVA cryogel covered stents were made by coating expanded bare metal stents. These covered stents were then hand-crimped onto a balloon catheter...

... shown that mild hypothermia, reducing tissue temperatures by 2 – 4 ° C , has the potential to save heart tissue that is not adequately perfused with blood. This paper describes the design of a cooling guide catheter that can provide rapid, local cooling to heart tissue during emergency angioplasty...

...James P. Kennedy; Richard A. Lasher; Donald Solomon; Robert W. Hitchcock Bacterial colonization of needleless injection sites (NISs) frequently results in catheter related bloodstream infections (CRBSIs). Hospitals have instituted protocols aimed at disinfecting NIS prior to access. Furthermore...

... of time spent in iterative design cycles. An overview of the design process will be presented and discussed within the context of a specific case study–the rapid design/fabrication of a chordal cutting device. Experimental results will be used to assess: (i) The performance of the catheter in maneuvering...

...W. Elkhatib; A. Noreddin Central venous catheter (CVC)-associated infections have substantial impacts on morbidity, mortality, and overall cost of health care. Acinetobacter baumannii causes severe infections, survives on abiotic surfaces, colonizes and develops resistant biofilm on different...

... with the medical device industry to reduce the quantity of packaging and waste associated with cardiac catheters, reduce the use of toxic cleaning solvents, minimize the use of PVC, and research safer disinfection and sterilization methods. This poster includes case studies of the above mentioned projects...

... fixed human hearts studied had negative ostia heights, but the effect on coronary flow is not known. blood vessels cardiovascular system catheters diagnostic radiography endoscopes haemorheology 09 07 2009 2009 American Society of Mechanical Engineers ...

... is a multi-port infusion catheter incorporated into a temporary pacing lead. Placement of the device would be trivial for surgeons, who routinely place temporary pacing leads prior to closing the chest. Removal of the device post-operatively would be equally simple. More complex iterations include...

... tissue damage. Cryoablation was performed using a prototype balloon catheter cryoablation system (Boston Scientific Corporation). CT visualization of iceball formation was assessed both in vitro and in vivo. Initial in vitro studies were performed in agarose gel phantoms immersed in a 37 ° C water bath...

...Alexander H. Slocum, Jr.; William R. Bosworth; Anirban Mazumdar; Miguel A. Saez; Martin L. Culpepper; Robert A. Levine, MD This paper focuses on the design and implementation of a percutaneous catheter-based device to provide physicians with an externally controlled tool capable of manipulating...