Helical hollow strand ureteral stent
A stent is provided that includes a body extending between a distal and a proximal end. The body is defined by a plurality of elongated members, with each elongated member extending between a distal end that is coterminous with the distal end of the body and a proximal end that is coterminous with the proximal end of the body. Each of the plurality of elongated members are arranged so as to define a lumen extending along the length of the respective plurality of elongated members, the lumen extending between the distal and proximal ends of the body so as to form a lumen length. Each of the plurality of elongated members are configured to permit drainage of a fluid from within the lumen to an environment external the stent along the entire lumen length.
1. A method for placing a ureteral stent, comprising:
providing a ureteral stent, the stent comprising a body extending between a distal end and a proximal end, the body defined by a plurality of elongated members, each elongated member extending between a distal end that is coterminous with the distal end of the body and a proximal end that is coterminous with the proximal end of the body, wherein each of the plurality of elongated members are arranged so as to define a lumen extending along the length of the plurality of elongated members, the lumen extending between the distal and proximal ends of the body so as to form a lumen length, wherein each of the plurality of elongated members are attached to adjacent elongated members at the distal end and proximal end forming continuous gaps between adjacent elongated members to permit drainage of a fluid from within the lumen through the gaps to an environment external the stent along the entire lumen length, wherein each of the plurality of elongated members are arranged so as to define a fixed outside diameter of the body; and
advancing the ureteral stent into a ureter of a patient until the ureteral stent is positioned within the ureter,
wherein the plurality of elongated members comprise a first plurality of elongated members and a second plurality of elongated members, wherein the first plurality of elongated members form an inner layer of the body to define the lumen, and the second plurality of elongated members form an outer layer of the body that surrounds the inner layer and each of the plurality of elongated members extend in a helical pattern to define a surface of the body and the lumen;
the first plurality of elongated members extend around and along the lumen in a clockwise helical pattern; and
the second plurality of elongated members extend around and along the lumen in a counterclockwise helical pattern.
2. The method of claim 1 , further comprising:
advancing a guide wire into the ureter before the step of advancing the ureteral stent into the ureter;
wherein the step of advancing the ureteral stent into the ureter further comprising advancing the ureteral stent over the guide wire;
wherein the distal end of the body and the proximal end of the body are polished so as to ease advancement of the stent.
3. The method of claim 2 , further comprising:
removing the guide wire from the ureter.
4. The method of claim 1 , further comprising:
removing the ureteral stent from the ureter.
5. The method of claim 1 , wherein:
the gaps between the adjacent elongated members extend continuously from the distal end of the body to the proximal end of the body.