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Telescopic percutaneous tissue dilation systems and related methods

  • US 9,387,313 B2
  • Filed: 08/02/2005
  • Issued: 07/12/2016
  • Est. Priority Date: 08/03/2004
  • Status: Active Grant
First Claim
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1. A percutaneous telescopic tissue dilation system, comprising:

  • a first dilation tube having a proximal end and a distal end, and at least two annular grooves disposed between the proximal end and the distal end;

    a second dilation tube having a proximal end, a distal end, and a lumen extending from the proximal end to the distal end, the lumen being dimensioned to accommodate at least a portion of the first dilation tube; and

    a dilation tube retention assembly effective in retaining the second dilation tube in a substantially fixed first position relative to the first dilation tube prior to dilation of tissue of an individual, wherein the dilation tube retention assembly engages with a first annular groove on the first dilation tube in the substantially fixed first position, and in releasing the second dilation tube from the substantially fixed first position to facilitate movement of the second dilation tube towards the distal end of the first dilation tube to a substantially fixed second position to dilate tissue of a patient, wherein the dilation tube retention assembly engages with a second annular groove on the first dilation tube in the substantially fixed second position, wherein each of the first and second annular grooves extend circumferentially around the first dilation tube;

    wherein in the second substantially fixed position, the distal end of the first dilation tube is adjacent the distal end of the second dilation tube and wherein in the first substantially fixed position and the second substantially fixed position the proximal end of the first dilation tube is entirely received within the lumen of the second dilation tube.

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