×

Apparatus for preventing loss of a composition during a medical procedure

  • US 6,203,526 B1
  • Filed: 08/21/1998
  • Issued: 03/20/2001
  • Est. Priority Date: 08/22/1997
  • Status: Expired due to Fees
First Claim
Patent Images

1. An apparatus for delivering a composition to a target area of a tissue, the apparatus traversing a track in the tissue, the apparatus comprising:

  • an elongate tubular inner member having a proximal end, a distal end and a lumen extending from the proximal end to the distal end of the inner member, said lumen adapted to receive a fluid at the proximal end of the inner member, and means for delivering said fluid from the distal end of the inner member to the target tissue by way of the lumen;

    an elongate tubular central member having a proximal end, a distal end and a lumen extending from said central member proximal end to said central member distal end, said tubular inner member being coaxially positioned in said lumen of said central member;

    an elongate tubular outer member having a proximal end, a distal end, lumen extending from said outer member proximal end to said outer member distal end, said tubular central member being coaxially located in said lumen of said outer member; and

    means for inhibiting a migration of said composition along the track from said target area comprising a selectively, radially expandable sleeve biased toward a radially expanded position when the apparatus is stationary in said tissue, is sufficiently radially compressible to permit movement of said apparatus in said tissue, wherein said radially expandable sleeve has a proximal end and a distal end, said proximal end and distal ends being restrained from expanding, and said proximal end and distal end are separated by an expandable portion having a predetermined length and wherein the proximal end of the sleeve is engaged by the distal end of the outer member and the distal end of the sleeve is engaged by the distal end of central member and, wherein movement of said central member relative to the outer member causes a reduction in a distance between said proximal and distal ends of said sleeve so that said expandable portion of said sleeve expands radially outward.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×