Apparatus for determining position of an endothracheal tube
Patent 5257636 Issued on November 2, 1993. Estimated Expiration Date: 
April 2, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 2, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3847157 Catheter locating device Endotracheal tube control device Probe for sensing characteristics of electrical devices utilizing a magnetic switch sensor biased by an encircling magnetic biasing means Method of and apparatus for determining very accurately the position of a device inside biological tissue Endotracheal catheter Patent #: 4593687 InventorAssigneeApplicationNo. 679539 filed on 04/02/1991US Classes:128/897, MISCELLANEOUS128/200.26, Means placed in body opening to facilitate insertion of breathing tube128/205.23, Indicator structure128/207.14, Respiratory gas supply means enters mouth or tracheotomy incision128/207.15, Breathing passage occluder600/424, With means for determining position of a device placed within a body600/585Flexible catheter guideExaminersPrimary: Howell, Kyle L.Assistant: Lacyk, John P. Attorney, Agent or FirmInternational ClassA61B 019/00AbstractAn apparatus for determining the optimum position of an endotracheal tube while allowing simultaneous ventilation of a patient with the endotracheal tube is disclosed. This apparatus contains a stylet, connecting means for adjustably and removably disposing the stylet within an endotracheal tube, means attached to the stylet for producing magnetic flux, and means for sensing the presence of magnetic flux.Other References
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