US 9,808,372 B2
Therapeutic instrument and attachment thereof
Masanobu Inoue, Honjo (JP); Kikuo Mitomo, Honjo (JP); Masako Oooka, Tokyo (JP); and Kazuyuki Tokumo, Singapore (SG)
Assigned to Hoya Corporation, Tokyo (JP)
Appl. No. 13/813,950
Filed by Masanobu Inoue, Honjo (JP); Kikuo Mitomo, Honjo (JP); Masako Oooka, Tokyo (JP); and Kazuyuki Tokumo, Singapore (SG)
PCT Filed Aug. 2, 2011, PCT No. PCT/JP2011/067665
§ 371(c)(1), (2), (4) Date May 25, 2013,
PCT Pub. No. WO2012/018006, PCT Pub. Date Feb. 9, 2012.
Claims priority of application No. 2010-174336 (JP), filed on Aug. 3, 2010; and application No. 2011-030323 (JP), filed on Feb. 16, 2011.
Prior Publication US 2013/0245554 A1, Sep. 19, 2013
Int. Cl. A61F 9/00 (2006.01); A61M 37/00 (2006.01); A61F 2/14 (2006.01)
CPC A61F 9/0017 (2013.01) [A61F 2/148 (2013.01); A61M 37/0069 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A therapeutic instrument for storing and delivering a sheet-type therapeutic substance, the therapeutic instrument comprising:
a nozzle member having a tubular part defining an inner surface, a storage space that is configured to store the therapeutic substance in a deformed state, a tip end with an opening extending therethrough for charging and discharging the therapeutic substance, and a rear communication part for communicating with the storage space;
a flexible support member that is configured to support the sheet-type therapeutic substance and is movable relative to the nozzle member between a retracted position where a portion of the inner surface of the tubular part deforms the flexible support member and an extended position where the flexible support member is located outside the tubular part;
a stopper, which is movable relative to the nozzle member, that engages the portion of the inner surface of the tubular part that deforms the flexible support member to create an air-tight seal between the stopper and the nozzle member at a location adjacent to the tip end;
a needle member, which is movable with the stopper, having a hollow needle part with an open tip end that is located outside of the flexible support member; and
a pressure generator that selectively generates a negative pressure and a positive pressure within the tubular part of the nozzle member between the stopper and the tip end,
wherein the negative pressure draws the therapeutic substance into the tubular part, and
wherein the positive pressure pushes the therapeutic substance out of the tubular part when the therapeutic substance stored in the tubular part.