Yougandh Chitre,Gene A. Bornzin,John R. Helland,Eric Falkenberg,Kevin L. Morgan,Sheldon Williams,Michael Yang,Andrew W. McGarvey
申请号：
US12973800
公开号：
US08311648B1
申请日:
2010.12.20
申请国别(地区):
US
年份:
2012
代理人:
摘要：
A delivery apparatus for accessing the pericardial space of a heart including an elongated body defining a lumen and a piercing member that extends from a distal portion of the elongated body for piercing tissue of the heart. A spring expands from a distal end of the piercing member in response to the distal end of the piercing member passing through the tissue and into the pericardial space. An electrode located on the spring in order to sense signals indicative of a distal end of the spring passing through the tissue and into the pericardial space.
