View clinical trials related to Device Malfunction.
Filter by:The usual treatment for stuck rings includes a variety of techniques including use of ice to reduce swelling, use of lubricants, and sometimes the use of string or ring cutters. The success rate of these techniques is variable and cutting the ring is usually reserved as a last resort. Sometimes removal of a ring can take time, and can cause some small injury to the patient. Because of this, it is important to consider other methods for ring removal. This study is looking at using a device that uses compression to reduce swelling of the finger causing the ring to be stuck. This device has been approved for use in Canada. The purpose of this study is to evaluate how effective a compression device is at removing stuck rings. The study question is: how effective is a compression device at removing stuck rings? A Compression Device (CD) is a device that uses circumferential compression to reduce swelling around a stuck ring. The device is used by placing it near, but not over-top, the offending ring, and then is inflated compressing the finger. The device is applied, and the hand elevated, for approximately five minutes. The device is then removed, and with a small amount of lubricant, the ring is removed. All patients requiring ring removal at the QEII emergency department, if a compression device can be used safely, will be asked if they would like to be included in the study and have their ring removal attempted by a compression device. Following removal attempt, the clinician will document information about the ring removal. This will include some questions regarding the patient's experience with the removal. No identifying information or personal health information will be recorded. The investigators plan to collect information about use of the compression device for a period of one year. Following this time, the data will be analyzed to determine how effective the compression device is at removing rings including statements regarding patient experience. This information will be documented in a manuscript intended for publication and may be presented at academic conferences or other continuing education events. The investigators will be measuring the success rate of ring removal with the compression device. In addition, the investigators will record information on any side effects of use of the compression device, as well as patient experience including pain and satisfaction.
The purpose of this study is to prospectively evaluate intravascular ultrasound (IVUS) imaging as a tool for grading the presence and characterization of intravascular lead adherence (ILA, or scarring) to cardiovascular implantable electronic device (CIED) leads during transvenous lead extraction (TLE) procedures in a multi-center study. IVUS should identify the location and severity of these adhesions, which the investigators will then correlate to difficulty of the extraction procedure using metrics like pulses of laser energy delivered and time required to traverse an area of fibrosis or ILA. The investigators will be focusing primarily on the section from innominate vein (INNV) down through the superior vena cava (SVC) to the right atrium. Using IVUS to view blood vessels and the heart structure is approved by the Food and Drug Administration (FDA). Using it as described in this study is off label because of the manner in which it is advanced to the SVC, through the right atrium. While it is not restricted from use in this way, it is not specifically on-label. It should be noted that the use of IVUS during TLE procedures as proposed in this study is routine at the University of Chicago and patients will undergo this procedure regardless of participation in this study. The EP physician team regards the use of IVUS during TLE to be nonsignificant risk.
Lack of access to pacemakers is a major challenge to the provision of cardiovascular health care in Low and Middle Income Countries (LMIC). Post-mortem pacemaker utilization could be safe, efficacious, and ethically responsible means of delivering the needed care. Reconditioned pacemakers can provide therapy for patients with symptomatic bradycardia and no means of receiving a new device. The objective of the clinical trial is to determine if pacemaker reutilization can be shown to be a safe means of delivering pacemakers to patients in LMIC without resources. Consented patients in this multi-center trial will be randomized to undergo implantation of either a reconditioned device or a new device.