| 主权项 |
1. A transseptal needle assembly, comprising:
a) an assembly handle, comprising:
i) a housing having a housing sidewall comprising an inner housing surface defining a housing lumen extending along a longitudinal axis from a proximal housing end wall at a proximal housing open end to a distal housing open end;ii) a sleeve comprising a sleeve sidewall having an inner sleeve surface defining a sleeve lumen extending along the longitudinal axis from a proximal sleeve open end to a distal sleeve open end, wherein the sleeve is received in the housing lumen;iii) a slug comprising a slug sidewall having an inner slug surface defining a slug lumen extending from a proximal slug open end to a distal slug open end, wherein the slug is received in the sleeve lumen with the proximal slug open end adjacent to the proximal sleeve open end; andiv) an end cap comprising a cap sidewall having an inner cap surface defining a cap lumen extending for a cap length from a proximal cap open end to a distal cap end wall at a distal cap open end; and b) an elongated cannula comprising a cannula sidewall having an inner cannula surface defining a cannula lumen extending from a distal cannula portion having a distal cannula open end to a proximal cannula portion having a proximal cannula open end, c) wherein:
i) the proximal cannula portion is received in the slug lumen,ii) the slug is received in the sleeve lumen, andiii) the sleeve is received in the housing lumen, and d) wherein the distal cannula portion having the distal cannula open end extends distally from the assembly handle, and e) wherein with the proximal cannula portion received in the slug lumen of the slug received in the sleeve, in turn, received in the housing, the distal cap end wall contacts the proximal housing end wall to thereby fixedly house the proximal cannula end inside the assembly handle. |
