| A novel pressure sensor with an optical system for coil embolization of intracranial aneurysms. Laboratory investigation. | |
| | |
MedLine Citation:
|
PMID: 19249935 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
OBJECT: In endovascular coil embolization for an intracranial aneurysm, the excessive pressure created during coil insertion into an aneurysm can cause a catastrophic rupture or dislodge a microcatheter tip from the aneurysm dome, resulting in insufficient embolization. Such undue mechanical pressure can only be subjectively detected by the subtle tactile feedback the surgeon experiences. Therefore, the authors of this study developed a new sensor device to measure the coil insertion pressure via an optical system. METHODS: This novel sensor system consists of a hemostatic valve connected to the proximal end of a microcatheter (Y-connector). The sensor principle is based on an optical system composed of a light-emitting diode (LED) and a line sensor. The latter measures how much the coil-delivery wire slightly bends in response to the insertion pressure by detecting the wire shadow. This information is translated into a given force level. Experimental aneurysm embolization was performed using this optical sensor. A silicone aneurysm model and an in vivo model (porcine aneurysm model) were used in this study. Several surgeons manually performed the coil insertions. The sensor continuously monitored the mechanical force during the insertions. RESULTS: The sensor adequately recorded the coil insertion pressure during embolization. The presence of the sensor did not hinder the embolization procedure in any way. During embolization in the silicone aneurysm model, a sinusoid pattern of pressure occurred, reflecting actual clinical experience. Similar results were obtained in the in vivo study. CONCLUSIONS: This new sensor device adequately measures coil insertion pressure. This system provides potentially safer and more reliable aneurysm embolizations. |
| | |
Authors:
|
Noriaki Matsubara; Shigeru Miyachi; Yoshitaka Nagano; Tomotaka Ohshima; Osamu Hososhima; Takashi Izumi; Arihito Tsurumi; Toshihiko Wakabayashi; Masamichi Sakaguchi; Akihito Sano; Hideo Fujimoto |
Related Documents
:
|
16434415 - The fate of systemic blood pressure in patients after effectively stented coarctation. 17066325 - Biomechanics of the porcine basilar artery in hypertension. 9458975 - Myocyte necrosis is the basis for fibrosis in renovascular hypertensive rats. 12651175 - Aortic side branch perfusion alone does not account for high intra-sac pressure after e... 1954595 - Blood pressure response to the canadian aerobic fitness test. 6701395 - Single-nephron hemodynamics in one-kidney one-clip hypertension in the rat. |
Publication Detail:
|
Type: Evaluation Studies; Journal Article |
Journal Detail:
|
Title: Journal of neurosurgery Volume: 111 ISSN: 0022-3085 ISO Abbreviation: J. Neurosurg. Publication Date: 2009 Jul |
Date Detail:
|
Created Date: 2009-07-02 Completed Date: 2009-08-20 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0253357 Medline TA: J Neurosurg Country: United States |
Other Details:
|
Languages: eng Pagination: 41-7 Citation Subset: AIM; IM |
Affiliation:
|
Department of Neurosurgery, Nagoya University Graduate School of Medicine, Nagoya, Japan. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Electronics, Medical Embolization, Therapeutic / instrumentation* Equipment Design* Humans Intracranial Aneurysm / therapy* Models, Anatomic Pressure Silicones Transducers, Pressure* |
| Chemical | |
Reg. No./Substance:
|
0/Silicones |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Thrombosis and hemorrhage in the acute period following Gamma Knife surgery for arteriovenous malfor...
Next Document: Recent trends in the treatment of spontaneous intracerebral hemorrhage: analysis of a nationwide inp...