Endocardiac lead having an active fastening means

摘要: An endocardiac lead of the type including a conductive spiral winding 2 placed inside sheath 1 made flexible material being insensitive to body fluids. This is electrically connected an electrode 3 intended for brought into contact with inner wall heart. The hollow and accommodates along its centerline deformable helix 6 fastening heart muscle. diameter smaller than outer undeformed 6. presents sufficient longitudinal elasticity modulus retractable mechanical deformation, while will substantially recover initial shape during extraction out secure tissue. may be nickel-titanium based alloy. deformation having notch 13 against which abut extraction.