Needle-carried, transthoracic, cannula-type cardiac resuscitation instrument
Intrauterine surgical device
Right ventricular injection catheter; right ventricular angiographic method; and method of monitoring septal wall motion
ApplicationNo. 805633 filed on 02/26/1997
US Classes:606/213Sutureless closure
ExaminersPrimary: Recla, Henry J.
Assistant: Ho, Tan
Attorney, Agent or Firm
Foreign Patent References
International ClassA61B 017/08
AbstractA device for closing off a septal defect including a polymeric self-hardening material in a specific conformation which is delivered by a catheter means to the area of defect either directly on the cardiac tissue or into a balloon which spans both surfaces of the defect, and hardened in-situ by change in pH or ionic concentration, organic solvents, by permeation of a secondary material capable of precipitation, or by exposure to heat, light or laser energy. In blood, the device may be hardened through photopolymerization or a cooperative effect of coagulation, precipitation or ionization. The device can be made of biodegradable material impregnated with growth factors, mitogenic factors or other determinants which can improve tissue growth such that tissue ingrowth can occur over a period of time. The catheter itself may be an ultrasonic imaging catheter.