Surgery – Miscellaneous – Methods
Patent
1989-03-28
1990-06-05
Pellegrino, Stephen C.
Surgery
Miscellaneous
Methods
604116, 606108, A61B 1700
Patent
active
049305255
ABSTRACT:
A guidance method for use in conjunction with a C.T. scanner allows a user to accurately place a drainage catheter, biopsy needle, or like catheter within a patient's body. A scan of the patient's body is made using the C.T. scanner to form a cross-sectional image of the target area within the patient's body. An insertion path is selected on the scanned cross-sectional image to reach the target area, and the lateral distance is determined between the vertical axis of the scanned image and the insertion site. The insertion angle and insertion distance along the insertion path are also computed from the cross-sectional image. The lighting system of the C.T. scanner projects a laser-generated longitudinal reference beam on to the patient's body corresponding with the vertical axis of the scanned image; the lighting system further projects at least one transverse beam on to the patient's body for designating the vertical plane through which an image was scanned. The insertion site is located by measuring upon the patient's body, along the transverse reference beam, the aforementioned lateral distance, starting from the longitudinal reference beam. The insertion site is marked, and th tip of the catheter is advanced into the insertion site, while maintaining the catheter within the transverse reference beam. The catheter is maintained at the computed insertion angle relative to a horizontal plane, and the catheter is advanced by the computed insertion distance to reach the target area.
REFERENCES:
patent: 2409432 (1946-10-01), Hubbard
patent: 2451183 (1948-10-01), Tantimonaco
patent: 4058114 (1977-10-01), Soldner
patent: 4212297 (1980-07-01), Frosch et al.
patent: 4341220 (1982-07-01), Perry
patent: 4583538 (1986-04-01), Onik et al.
patent: 4592352 (1986-06-01), Patil
patent: 4733661 (1988-03-01), Palestrant
Frederick et al., "A Light-Guidance System to be Used for CT-Guided Biopsy", Radiology, vol. 154, No. 2, Feb. 1985, pp. 535-536.
Hruby et al., "A New Device for CT-Guided Biopsy and Puncture: Experimental and Clinical Data", Scientific Program of the Radiological Society of North America, Dec. 1986, Works in Progress-General Diagnosis Abstracts, vol. 161 (P), p. 347.
LandOfFree
Method for performing C.T. guided drainage and biopsy procedures does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for performing C.T. guided drainage and biopsy procedures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for performing C.T. guided drainage and biopsy procedures will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-485551