Surgery – Diagnostic testing – Measuring fluid pressure in body
Reexamination Certificate
2005-03-29
2005-03-29
Marmor, Charles (Department: 3736)
Surgery
Diagnostic testing
Measuring fluid pressure in body
C600S560000, C600S587000
Reexamination Certificate
active
06872183
ABSTRACT:
A system and method for detecting perforations in a body cavity. In accordance with the method of the invention, a fluid (liquid or gas) is delivered into a body cavity to slightly pressurize the cavity. A pressure sensing system monitors the pressure within the cavity for a predetermined test period. If cavity pressure is not substantially sustained during the test period, the physician is alerted to further assess the cavity for perforations before initiating treatment within the cavity. In a preferred form of the system, a medical treatment system such as an RF ablation system is provided with perforation detection functionality. The system preferably includes a pre-test and post-test lockout system. The lockout system prevents RF power delivery unless, during a predetermined test period, the pressure sensing system determines that no perforation exists, or unless a previously performed perforation detection procedure determined a perforation was present but the lockout system was subsequently overridden by the physician.
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D.R. Flum et al., “The accuracy of gastric insufflation in testing for gastroesoesophageal perforatons during laparoscopic Nissen fundoplication,”Medscap from WebMD(Oct.-Dec. 1999), “Abstract Medline/Aidsline,” printed Jun. 23, 2004 from htt;//intapp.medscape.com/px/medlineapp/getdoc?ord=3&searched=3&have_local_holdin . . ., one page in length.
Miller Dean T.
O'Hara Mike
Sampson Russell M.
Truckai Csaba
Cytyc Surgical Product
Marmor Charles
Stallman & Pollock LLP
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