Lymphangiogenesis inducing device

Abstract

A lymphangiogenesis inducing device includes: a puncture member including a distal end portion configured to puncture living tissue, and a through hole penetrating the puncture member along a central axis and extending from the distal end portion toward a proximal end; and a rod-shaped body inserted into the through hole and configured to be moved so as to protrude from the distal end portion. The rod-shaped body includes a shaft portion, and a wound imparting structure including at least one protrusion located on the shaft portion and configured to impart a wound to the living tissue.

What is claimed is: 
     
         1 . A lymphangiogenesis inducing device comprising:
 a puncture member comprising a distal end portion configured to puncture living tissue, and a through hole penetrating the puncture member along a central axis and extending from the distal end portion toward a proximal end; and   a rod-shaped body inserted into the through hole and configured to be moved so as to protrude from the distal end portion, wherein:   the rod-shaped body comprises a shaft portion, and a wound imparting structure comprising at least one protrusion located on the shaft portion and configured to impart a wound to the living tissue.   
     
     
         2 . The lymphangiogenesis inducing device according to  claim 1 , wherein:
 the at least one protrusion comprises a plurality of protrusions protruding outward from the shaft portion.   
     
     
         3 . The lymphangiogenesis inducing device according to  claim 2 , wherein:
 the plurality of protrusions comprises protrusions located at different axial positions and different circumferential positions of the shaft portion.   
     
     
         4 . The lymphangiogenesis inducing device according to  claim 2 , wherein:
 the protrusions have the same protruding height from the shaft portion in a state in which the protrusions are located in the through hole and in a state in which the protrusions are located outside the through hole.   
     
     
         5 . The lymphangiogenesis inducing device according to  claim 2 , wherein:
 the protrusions have a protruding height from the shaft portion that increases when the protrusions transition from a state in which the protrusions are located in the through hole to a state in which the protrusions are located outside the through hole.   
     
     
         6 . The lymphangiogenesis inducing device according to  claim 5 , wherein:
 the protrusions are folded inward when in the state in which the protrusions are located in the through hole, and open outward and protrude when in the state in which the protrusions are outside the through hole.   
     
     
         7 . The lymphangiogenesis inducing device according to  claim 1 , wherein:
 the protrusion is a spiral protrusion.   
     
     
         8 . The lymphangiogenesis inducing device according to  claim 1 , wherein:
 the wound imparting structure has a configuration in which protrusion of the wound imparting structure from the distal end portion and retraction of the wound imparting structure into the through hole are repeatable.   
     
     
         9 . A method of forming a wound using a lymphangiogenesis inducing device, the method comprising:
 providing the lymphangiogenesis inducing device, which comprises:
 a puncture member comprising a distal end portion configured to puncture living tissue, and a through hole penetrating the puncture member along a central axis and extending from the distal end portion toward a proximal end, and 
 a rod-shaped body inserted into the through hole and configured to be moved so as to protrude from the distal end portion, wherein: 
 the rod-shaped body comprises a shaft portion, and a wound imparting structure comprising at least one protrusion located on the shaft portion and configured to impart a wound to the living tissue. 
   identifying a blocked lymphatic vessel;   identifying a regeneration route connecting the blocked lymphatic vessel and an adjacent lymphatic vessel;   puncturing the living tissue with the lymphangiogenesis inducing device while the rod-shaped body is located in the through hole;   passing the lymphangiogenesis inducing device through the regeneration route;   pulling back the puncture member along the regeneration route while the rod-shaped body is left in the living tissue;   pulling back the rod-shaped body along the regeneration route such that the at least one protrusion forms a wound in the living tissue along the regeneration route.   
     
     
         10 . The method according to  claim 9 , wherein:
 the at least one protrusion comprises a plurality of protrusions protruding outward from the shaft portion.   
     
     
         11 . The method according to  claim 10 , wherein:
 the plurality of protrusions are comprises protrusions located at different axial positions and different circumferential positions of the shaft portion.   
     
     
         12 . The method according to  claim 10 , wherein:
 the protrusions have the same protruding height from the shaft portion in a state in which the protrusions are located in the through hole and in a state in which the protrusions are located outside the through hole.   
     
     
         13 . The method according to  claim 10 , wherein:
 the protrusions have a protruding height from the shaft portion that increases when the protrusions transition from a state in which the protrusions are located in the through hole to a state in which the protrusions are located outside the through hole.   
     
     
         14 . The method according to  claim 13 , wherein:
 the protrusions are folded inward when in the state in which the protrusions are located in the through hole, and open outward and protrude when in the state in which the protrusions are outside the through hole.   
     
     
         15 . The method according to  claim 9 , wherein:
 the protrusion is a spiral protrusion.   
     
     
         16 . The method according to  claim 9 , wherein:
 the wound imparting structure has a configuration in which protrusion of the wound imparting structure from the distal end portion and retraction of the wound imparting structure into the through hole are repeatable.