An apparatus for vertically aligning a given point on a pressure transducer unit with a desired point an a patient, the apparatus comprising: (a) a light source; (b) a housing adapted to contain the light source; (c) at least one leveling tube having a leveling axis that is substantially parallel to...http://www.google.es/patents/US5280789?utm_source=gb-gplus-sharePatente US5280789 - Apparatus and method for measuring fluid pressure in a medical patient
Apparatus and method for measuring fluid pressure in a medical patient
