Device for aiding a radiologist during percutaneous transluminal coronary angioplasty

• US 5,077,769 A
• Filed: 02/20/1991
• Issued: 12/31/1991
• Est. Priority Date: 06/29/1990
• Status: Expired due to Term

• Current Assignee: Siemens Gammasonics Incorporated
• Original Assignee: Siemens Gammasonics Incorporated
• Inventors: Franciose, Barbara D.
• Primary Examiner(s): Church, Craig E.
• Application Number:
  US07/657,808
• Time in Patent Office: 314 Days
• Field of Search: 378/99, 378/195, 378/196, 358/111
• US Class Current: 378/98.2
• CPC Class Codes: A61B 2017/22001 Angioplasty, e.g. PCTA
• CPC Class Codes: A61B 2034/301 for introducing or steering flexible instruments inserted into the body, e.g. catheters or endoscopes
• CPC Class Codes: A61B 2034/742 Joysticks
• CPC Class Codes: A61B 46/10 specially adapted for instruments, e.g. microscopes
• CPC Class Codes: A61B 6/4423 related to hygiene or sterilisation
• CPC Class Codes: A61B 6/467 characterised by special input means
• CPC Class Codes: A61B 6/481 involving the use of contrast agents
• CPC Class Codes: A61B 6/504 for diagnosis of blood vessels, e.g. by angiography
• CPC Class Codes: A61B 6/5235 combining images from the same or different ionising radiation imaging techniques, e.g. PET and CT
• CPC Class Codes: H04N 5/3205 using subtraction imaging techniques

Abstract

A control panel, which includes a programmable electroluminescent touch screen and a joystick, is mounted so as to be operable by the radiologist during a PTCA procedure. A bedside monitor displays fluoro and roadmap information during the procedure. The radiologist can adjust the relative weight of the roadmap information to the fluoro information by operating the joystick. The system automatically selects the appropriate roadmap based upon the angular orientation of the camera gantry, or alternatively selects the appropriate gantry position to correspond to that used to produce a satisfactory roadmap.

Claims

1. A device for use during percutaneous transluminal coronary angioplasty, comprising:

a gantry having mounted thereon an X-ray source and an image intensifier, said source and said intensifier being located in opposition across a patient, said gantry being controllably positionable within an angular configuration;

means for storing a plurality of opacified images obtained from said image intensifier, said storing means being operative to store in association with each of said plurality of opacified images the respective angular configuration of said gantry at which said each of said plurality of opacified images was obtained; and

bidirectional means for a) selecting the opacified image which most closely corresponds, in terms of viewing angle, to the present angular configuration of the gantry and b) adjusting the angular configuration of the gantry to correspond to the angular configuration of the gantry which was used to produce a selected opacified image.