Device for splinting a cavity, organ duct and/or vessel
The invention relates to a device for splinting and/or maintaining a cavity, an organ duct and or a vessel in a human or animal body, said device including at least one compressible and self-expanding stent that is composed of at least three phases.
1. A stent for splinting and/or holding open of a pharynx in a human or animal body, wherein the stent comprises a distal end and a proximal end, is compressible in a tube, and is self-expanding, said stent further comprising a proximal functional phase, a distal functional phase, and a transition phase, wherein the transition phase is positioned between the two functional phases and wherein the stent has a net structure made of material comprising wire, fibre or thread, wherein a multiplicity of openings of the net structure of the transition phase are larger than the multiplicity of openings of the net structure of the two functional phases, wherein the functional phases and the transition phase are made of continuous wires, fibres, or threads extending from the proximal end to the distal end and back to the proximal end, that result in a closed, rounded end for each wire, fibre, or thread at the distal end of the stent and two open wire, fibre, or thread ends at the proximal end of the stent, wherein the number of wires, fibres or threads used to produce the stent matches the number of closed ends, and the transition phase consists of a twisting of at least two sections of the continuous wires, fibres or threads extending the length of the transition phase, wherein the distal functional phase of the stent has a greater expansion diameter than the proximal functional phase, wherein the pharynx is splinted and/or held open by at least the distal functional phase of the stent, and wherein the two open wires, fibres or threads at the proximal end are firmly fixed to a connecting element.
2. The device according to claim 1 , wherein the functional phases are constructed through the crossing of at least a section of the wire, fibre or thread.
3. The device according to claim 2 , wherein functional phases comprise a braiding and/or woven fabric and/or interlaid scrim with angles of opening in a longitudinal direction of the stent.
4. The device according to claim 1 , wherein the distal functional phase of the stent has a length of 0.5 cm to 20 cm, the tube has a length of 0.5 cm to 50 cm and the stent has a length of 2 cm to 50 cm.
5. The device according to claim 1 , wherein a total of 12, 18 or 24 wires, fibres or threads are used resulting in 12, 18 or 24 closed ends at the distal end, respectively.
6. The device according to claim 5 , wherein the 12, 18 or 24 wires, fibres or threads results in 24, 36 or 48 open wires, fibres or thread ends at the proximal end, respectively.
7. The device according to claim 1 , wherein the connecting element further comprises a screw thread.
8. The device according to claim 1 , further comprising a pulling element removably connected to the stent at the connecting element.
9. The device according to claim 1 , wherein the wires, fibres or threads of the stent has a diameter of preferably 0.001 mm to 2 mm.
10. The device according to claim 1 , wherein the wires, fibres or threads of the stent has a diameter of preferably 0.05 mm to 0.5 mm.
11. A treatment method for snoring and/or sleep apnea in a subject, the method comprising inserting the stent according to claim 1 through a subject's nose into the pharynx to open the pharynx, wherein the stent is inserted into the tube and inserting the tube in the nose of the subject up the pharynx, the tube is withdrawn from the nose to release the stent from the tube, the stent expands, wherein the pharynx is splinted and/or held open by at least the distal functional phase of the stent.