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Balloon catheter

Jianguo Ma, Yuan Luo, René R Sevag Packard, Teng Ma, Yichen Ding, Parinaz Abiri, Yu-Chong Tai, Qifa Zhou, Kirk K Shung, Rongsong Li, Tzung Hsiai
Plaque rupture causes acute coronary syndromes and stroke. Intraplaque oxidized low density lipoprotein (oxLDL) is metabolically unstable and prone to induce rupture. We designed an intravascular ultrasound (IVUS)-guided electrochemical impedance spectroscopy (EIS) sensor to enhance the detection reproducibility of oxLDL-laden plaques. The flexible 2-point micro-electrode array for EIS was affixed to an inflatable balloon anchored onto a co-axial double layer catheter (outer diameter = 2 mm). The mechanically scanning-driven IVUS transducer (45 MHz) was deployed through the inner catheter (diameter = 1...
November 1, 2016: Sensors and Actuators. B, Chemical
Rafael Vilhena de Carvalho Fürst, Afonso César Polimanti, Sidnei José Galego, Maria Claudia Bicudo, Erik Montagna, João Antônio Corrêa
OBJECTIVE: To present a simple and affordable model able to properly simulate an ultrasound-guided venous access. DESIGN: The simulation was made using a latex balloon tube filled with water and dye solution implanted in a thawed chicken breast with bones. RESULTS: The presented model allows the simulation of all implant stages of a central catheter. The obtained echogenicity is similar to that observed in human tissue, and the ultrasound identification of the tissues, balloon, needle, wire guide and catheter is feasible and reproducible...
October 20, 2016: World Journal of Surgery
Roberto Gandini, Costantino Del Giudice
OBJECTIVES: The aim of this study was to evaluate the safety and efficacy of percutaneous catheter-delivered ultrasound energy to improve local paclitaxel delivery effects in patients with critical limb ischemia (CLI) treated for femoral-popliteal arterial disease. BACKGROUND: Treatment of patients with CLI continues to be the greatest challenge in peripheral artery disease; in particular, treatment of femoral-popliteal chronic total occlusion is characterized by poor primary patency...
October 24, 2016: JACC. Cardiovascular Interventions
Shigemitsu Shirai, Keisuke Hirano, Norihiro Kobayashi
It is difficult to treat a thrombotic embolism in the common femoral artery or popliteal artery (POP A), i.e., the non-stenting zone. We report a new technique for the treatment of thrombotic embolism in the non-stenting zone using a self-expandable nitinol stent. Case 1 had an external iliac artery (EIA) occlusion that occurred over several months. A self-expandable nitinol stent was placed in the right EIA lesion via a retrograde approach using a distal 9-Fr balloon protection guide catheter in the right femoral artery...
October 19, 2016: Catheterization and Cardiovascular Interventions
Takayuki Warisawa, Toru Naganuma, Sunao Nakamura
We report a case of percutaneous coronary intervention in a bifurcation lesion involving left circumflex (LCx) artery and 2 major posterolateral (PL) arteries. The target LCx had diffuse long and severely calcified lesion with the acute takeoff angle from the left main. Despite adequate lesion preparation with rotational atherectomy and balloon angioplasty, the stent was not deliverable, even with deep intubation of 7Fr-guiding catheter. Conventional use of guiding extension catheter (GEC) would have required removal of a wire from at least one PL because of the device interference in the GEC...
October 18, 2016: Cardiovascular Intervention and Therapeutics
Stanislav Pekarskiy, Andrei Baev, Viktor Mordovin, Galina Semke, Tatiana Ripp, Alla Falkovskaya, Ekaterina Sitkova, Valeria Lichikaki, Irina Zubanova, Maria Kuzmichkina, Sergei Popov
OBJECTIVE: A failure of endovascular renal denervation (RDN) as a series of point treatments equally distributed within main trunk of renal artery (Symplicity and other methods) was easily predictable. It may only be effective if all renal nerves closely follow the course of renal artery (RA) from aorta to the kidney. However, surgical studies demonstrated that proximally most renal nerves go at a distance from RA and join mainly its distal part. To evaluate whether denervation treatment in distal part of RA is more effective than conventional RDN...
September 2016: Journal of Hypertension
Weiguo Huang, Zheng Huang, Guofeng Xiao, Xiang Qin
We aimed to evaluate the long-term therapeutic effect of transurethral split of the prostate (TUSP) with a newly improved double-columnar balloon catheter on patients with benign prostatic hyperplasia (BPH).Total 565 BPH patients (mean age 73.6 years, range 46-94 years) who underwent TUSP surgery between January 2006 and January 2015 were included. Patient's baseline characteristics, prostate size, PSA, preoperative and postoperative maximum urinary flow rate (Qmax), postvoid residual (PVR), international prostate symptoms score (IPSS) and quality of life (QOL) score, perioperative data and postoperative complications were recorded...
October 2016: Medicine (Baltimore)
Sergio Conti, Massimo Moltrasio, Claudio Tondo, Gaetano Fassini
Cryoballoon ablation is a widely diffuse technology to perform paroxysmal atrial fibrillation ablation. The new generation cryoballoon catheters have been redesigned in order to improve the cooling capability. During cryoballoon ablation it is not unusual to observe the formation of a contrast dye ice-cap on top of the balloon itself. The automated balloon deflation before dissolution of the ice cap may increase the risk of embolization of large ice-mixed-contrast crystals in the systemic circulation. In the case hereby reported, we describe an uneventful embolization of this contrast dye ice cap in the systemic circulation...
October 17, 2016: Pacing and Clinical Electrophysiology: PACE
Michael Khoury, Juan Pablo Sandoval, Lars Grosse-Wortmann, Edgar Jaeggi, Rajiv R Chaturvedi
A 33-day-old infant with obstructed cor triatriatum sinister and partial anomalous pulmonary venous drainage presented with respiratory distress and fever. Her suprasystemic pulmonary hypertension was relieved by opening the connection to the right atrium using balloon atrial septoplasty and septostomy, and to the inferior chamber using balloon dilation of a fenestration in the dividing membrane. This enabled extubation and discharge, with elective surgical repair at 2 months. To our knowledge, this is the youngest patient to receive a catheter intervention for obstructed cor triatriatum sinister, providing relief of pulmonary hypertension and postponement of surgical repair...
July 15, 2016: Canadian Journal of Cardiology
Thandar Aye, Thanh Trung Phan, Douglas Findlay Muir, Nicholas John Linker, Richard Hartley, Andrew John Turley
AIM: This new laser facilitated 'inside-out' technique was used for transvenous pacemaker insertion in a pacemaker-dependent patient with bilateral subclavian occlusion and a failed epicardial system who is not suitable for a transfemoral approach. METHOD AND RESULTS: Procedure was undertaken under general anaesthesia with venous access obtained from right femoral vein and left axillary vein. 7F multipurpose catheter was used to enter proximal edge of the occluded segment of subclavian vein via femoral approach, which then supported stiff angioplasty wires and microcatheters to tunnel into the body of occlusion...
October 14, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Malte Kuniss, Harald Greiß, Dmitri Pajitnev, Ersan Akkaya, Nikolas Deubner, Andreas Hain, Lars Bodammer, Alexander Berkowitsch, Gian-Battista Chierchia, Christian W Hamm, Thomas Neumann
AIMS: Although the generation of linear lesions by ablation improves success rates in patients with persistent atrial fibrillation (AF), the procedure has been considered unsuitable for cryoablation balloon catheter technologies. We developed a technique for linear ablations, using second-generation cryoballoon technology. METHODS AND RESULTS: This was a single-arm, prospective study in 76 patients with persistent AF treated consecutively at our centre. Cryoablation was performed using a 28 mm second-generation cryoballoon...
October 12, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Haci Polat, Umut Gulacti
PURPOSE: To find answers to some catheter-related questions in hypospadias repair such as which type of catheter should be used, with which catheter balloon inflation volume, and when should the catheter be removed from the urethra? As catheter use and post-op retention time varies among surgeons in hypospadias repair. MATERIAL AND METHODS: Fifty-four 10 French all-silicone- and 54 latex Foley catheters were prepared and assigned to groups as senary. The catheter's balloons were inflated with 2, 3 and 5 mL of sterile water...
October 10, 2016: Urology Journal
Matthew E Smith, James R Tysome
OBJECTIVE: Balloon eustachian tuboplasty (BET) has entered clinical use as a treatment for eustachian tube dysfunction. Some surgeons perform myringotomy prior to BET due to concerns that the increase in middle ear (ME) pressure caused by BET may cause otic barotrauma. We investigated the ME pressure changes occurring during BET in cadavers. STUDY DESIGN: Human cadaver investigation of a surgical technique SETTING: Laboratory study at a tertiary referral center...
October 11, 2016: Otolaryngology—Head and Neck Surgery
Renan Maloni Augusto, André Luis Pereira Albuquerque, Thomas Jaeger, Carlos Roberto Ribeiro de Carvalho, Pedro Caruso
BACKGROUND: The use of esophageal catheters with microtransducer promises advantages over traditional catheters with air-filled balloons. However, performance comparisons between these 2 types of catheters are scarce and incomplete. METHODS: A catheter with a 9.5-cm air-filled balloon at the distal tip and a catheter with a microtransducer mounted within a flexible silicone rubber were tested in vitro and in vivo. In vitro, the response times of both catheters were compared, and the drift of the baseline pressure of the microtransducer catheter was evaluated over a 6-h period...
October 11, 2016: Respiratory Care
A K Aderoba, B N Olagbuji, A L Akintan, O L Oyeneyin, O O Owa, J A Osaikhuwuomwan
OBJECTIVE: To determine the outcomes and factors associated with postpartum haemorrhage (PPH) treatment with condom-catheter uterine balloon tamponade (C-UBT). DESIGN: Prospective observational study. SETTING: A secondary healthcare facility in Nigeria. POPULATION: Women with PPH refractory to first-line treatment. METHODS: Demographic and clinical characteristics were compared in women with successful and unsuccessful treatment...
October 11, 2016: BJOG: An International Journal of Obstetrics and Gynaecology
Mahtab Hassanpourfard, Ranajay Ghosh, Thomas Thundat, Aloke Kumar
Using a microfabricated porous media mimic platform, we investigated the clogging dynamics of bacterial biomass that accumulated in the device due to the formation of bacterial streamers. Particularly, we found the existence of a distinct clogging front which advanced via pronounced 'stick-slip' of the viscoelastic bacterial biomass over the solid surface of the micro pillar. Thus, the streamer, the solid surface, and the background fluidic media defined a clear three-phase front influencing these advancing dynamics...
October 18, 2016: Lab on a Chip
Carlos A Hinojosa, Javier E Anaya-Ayala, Alejandra Lopez-Mendez, Zeniff Gomez-Arcive, Hugo Laparra-Escareno, Cesar Cuen-Ojeda, Rene Lizola, Adriana Torres-Machorro
Exhaustion of superficial veins coupled with the presence of intrathoracic central venous occlusions remains a significant obstacle for hemodialysis access creation; complex arteriovenous graft (AVG) configurations have been described. The axillary-iliac AVG was first reported in 1987, and few authors have explored this access. We evaluated our experience with this AVG configuration utilizing the early cannulation (EC) graft Flixene™ (Atrium ™, Hudson, NH, USA). Eight patients (75 % men; mean age 37 ± 10 years) with End-Stage Renal Disease (ESRD) underwent axillo-iliac AVG creation with Flixene™ grafts; all had exhausted peripheral veins, occluded thoracic central veins, and inadequate femoral veins...
October 5, 2016: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
Mamas A Mamas, Sudhakar George, Karim Ratib, Chun Shing Kwok, Abdelnasir Elkhazin, Kully Sandhu, Julie Stubbs, Pamela Luxford, James Nolan
BACKGROUND: While the uptake of transradial access site is growing, there are concerns about associated radial injury. We report a feasibility study of a technique that enables both 5Fr diagnostic and PCI cases to be undertaken without an arterial sheath using conventional diagnostic and guide catheters with a modified balloon assisted tracking (BAT) technique. METHODS: We performed a prospective single center pilot study to assess the feasibility and effectiveness of sheathless radial artery access and BAT to perform coronary angiography and angioplasty using conventional 5 Fr diagnostic and guide catheters...
September 18, 2016: Cardiovascular Revascularization Medicine: Including Molecular Interventions
Sarwar Noori Mahmood, Hewa Mahmood Toffeq
Background: Percutaneous nephrostolithotomy is an important approach for removing kidney stones. Puncturing and dilatation are two mandatory steps in percutaneous nephrolithotomy (PCNL). Uncommonly, during dilatation, the dilators can cause direct injury to the main renal vein or to their tributaries. Case Presentation: A 75-year-old female underwent PCNL for partial staghorn stone in the left kidney. During puncturing and dilatation, renal vein tributary was injured, and the nephroscope entered the renal vein and inferior vena cava, which was clearly recognized...
2016: J Endourol Case Rep
B Ajlani, G Gibault-Genty, G Cherif, E Blicq, S Azzaz, P Schiano, M Brami, L Sarfati, C Charbonnel, R Convers-Domart, B Livarek, J-L Georges
BACKGROUND: Massive intracoronary thrombus is associated with adverse procedural results including failed aspiration and unfavourable reperfusion. We aim to evaluate the effect of the intracoronary administration of antithrombotic agents via a perfusion catheter in patients with ST-segment elevation myocardial infarction (STEMI) presenting with a large thrombus burden and failed aspiration. METHODS: We retrospectively analyzed the thrombus burden, the TIMI grade flow, and the myocardial Blush in 25 consecutive STEMI patients with a large thrombus burden and failed manual aspiration, who received intracoronary infusion of glycoprotein IIb/IIIa inhibitors (N=17) or bivalirudine (N=8) via a 6F-infusion catheter (ClearWay™ RX) RESULTS: Mean age was 67±14 years, 16 patients (64 %) presented with anterior STEMI, and 7 (28 %) with cardiogenic shock...
September 29, 2016: Annales de Cardiologie et D'angéiologie
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