Temperature and pressure fiber-optic sensors applied to minimally invasive diagnostics and therapies

We present how fiber-optic temperature or pressure sensors could be applied to minimally invasive diagnostics and therapies. For instance a miniature pressure sensor based on micro-optical mechanical systems (MOMS) could solve most of the problems associated with fluidic pressure transduction presently used for triggering purposes. These include intra-aortic balloon pumping (IABP) therapy and other applications requiring detection of fast and/or subtle fluid pressure variations such as for intracranial pressure monitoring or for urology diagnostics. As well, miniature temperature sensors permit minimally invasive direct temperature measurement in diagnostics or therapies requiring energy transfer to living tissues. The extremely small size of fiber-optic sensors that we have developed allows quick and precise in situ measurements exactly where the physical parameters need to be known. Furthermore, their intrinsic immunity to electromagnetic interference (EMI) allows for the safe use of EMI-generating therapeutic or diagnostic equipments without compromising the signal quality. With the trend of ambulatory health care and the increasing EMI noise found in modern hospitals, the use of multi-parameter fiber-optic sensors will improve constant patient monitoring without any concern about the effects of EMI disturbances. The advantages of miniature fiberoptic sensors will offer clinicians new monitoring tools that open the way for improved diagnostic accuracy and new therapeutic technologies.

[1]  L. Marshall,et al.  The outcome with aggressive treatment in severe head injuries. Part II: acute and chronic barbiturate administration in the management of head injury. , 1979, Journal of neurosurgery.

[2]  J B Newell,et al.  Intraaortic balloon pumping for cardiac support: trends in practice and outcome, 1968 to 1995. , 1997, The Journal of thoracic and cardiovascular surgery.

[3]  B. North,et al.  Comparison among three methods of intracranial pressure recording. , 1986, Neurosurgery.

[4]  Simon Rioux,et al.  Miniature fiber optic pressure sensor for medical applications: an opportunity for intra-aortic balloon pumping (IABP) therapy , 2005, International Conference on Optical Fibre Sensors.

[5]  C. Avezaat,et al.  Intracranial Pressure VIII , 1993, Springer Berlin Heidelberg.

[6]  J. Miller,et al.  Inaccurate pressure readings for subarachnoid bolts. , 1986, Neurosurgery.

[7]  G. Maccioli,et al.  The intra-aortic balloon pump: a review. , 1988, Journal of cardiothoracic anesthesia.

[8]  Randall W. Smith,et al.  The outcome with aggressive treatment in severe head injuries: Part II: Acute and chronic barbiturate administration in the management of head injury , 1979 .

[9]  G Gambardella,et al.  Monitoring of brain tissue pressure with a fiberoptic device. , 1992, Neurosurgery.

[10]  Anthony Marmarou,et al.  A Fiberoptic Device Suitable for Subdural Pressure Measurement , 1993 .

[11]  M. Rosner,et al.  Significance of intracranial hypertension in severe head injury. , 1977, Journal of neurosurgery.

[12]  A Kantrowitz,et al.  Initial clinical experience with intraaortic balloon pumping in cardiogenic shock. , 1968, JAMA.

[13]  N. Kassell,et al.  TRANSMISSION OF INCREASED INTRACRANIAL PRESSURE. I. WITHIN THE CRANIOSPINAL AXIS. , 1964, Journal of neurosurgery.

[14]  R M Gardner,et al.  Direct blood pressure measurement--dynamic response requirements. , 1981, Anesthesiology.

[15]  Nino Stocchetti.  Head Injury. Pathophysiology and management , 2005, Acta Neurochirurgica.

[16]  石井 昌三,et al.  Intracranial pressure IX , 1994 .

[17]  J O Rowan,et al.  A clinical comparison of subdural screw pressure measurements with ventricular pressure. , 1983, Journal of neurosurgery.

[18]  E. Moss,et al.  Head Injury—Pathophysiology and Management, 2nd Edn. P. L. Reilly and R. Bullock (editors). Published by Hodder Arnold, London. Pp. 501; indexed; illustrated. Price £145.00. ISBN 0-340-80724-5 , 2005 .

[19]  A. Shafik,et al.  Ureteric profilometry. A study of the ureteric pressure profile in the normal and pathologic ureter. , 1998, Scandinavian journal of urology and nephrology.

[20]  A R Hopeman,et al.  Intra-aortic balloon pumping in cardiogenic shock. , 1976, Rocky Mountain medical journal.