US 10,888,659 B2
Medical delivery device
Maxime Gaillot, Basel (CH); Roberta Leah, Basel (CH); Declan Reilly, Basel (CH); Mark Digby Teucher, Bath (GB); Paul Graham Hayton, Bristol (GB); Jonathan Paul Ridley, Bristol (GB); and James Robert Coop, Bristol (GB)
Assigned to HOFFMANN-LA ROCHE INC., Little Falls, NJ (US)
Appl. No. 16/62,006
Filed by HOFFMANN-LA ROCHE INC., Little Falls, NJ (US)
PCT Filed Dec. 13, 2016, PCT No. PCT/EP2016/080845
§ 371(c)(1), (2) Date Jun. 13, 2018,
PCT Pub. No. WO2017/102757, PCT Pub. Date Jun. 22, 2017.
Claims priority of application No. 15199909 (EP), filed on Dec. 14, 2015; application No. 15199911 (EP), filed on Dec. 14, 2015; application No. 15199913 (EP), filed on Dec. 14, 2015; application No. 15199915 (EP), filed on Dec. 14, 2015; and application No. 16167999 (EP), filed on May 3, 2016.
Prior Publication US 2019/0015593 A1, Jan. 17, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 5/20 (2006.01); A61M 5/315 (2006.01); A61M 5/178 (2006.01); A61J 1/20 (2006.01); A61M 5/32 (2006.01); A61M 5/24 (2006.01); A61M 5/31 (2006.01)
CPC A61M 5/204 (2013.01) [A61J 1/20 (2013.01); A61J 1/2006 (2015.05); A61J 1/2096 (2013.01); A61M 5/1782 (2013.01); A61M 5/20 (2013.01); A61M 5/2422 (2013.01); A61M 5/3146 (2013.01); A61M 5/3158 (2013.01); A61M 5/31505 (2013.01); A61M 5/31525 (2013.01); A61M 5/31528 (2013.01); A61M 5/31536 (2013.01); A61M 5/31551 (2013.01); A61M 5/31553 (2013.01); A61M 5/31561 (2013.01); A61M 5/31571 (2013.01); A61M 5/3213 (2013.01); A61M 2005/3126 (2013.01); A61M 2205/58 (2013.01); A61M 2205/581 (2013.01); A61M 2205/582 (2013.01); A61M 2205/583 (2013.01)] 31 Claims
OG exemplary drawing
 
1. A medical delivery device comprising:
a rod element having a stem with a longitudinal axis, a first thread arrangement, a distal end and a proximal end;
a dosage member comprising a delivery orifice, a second thread arrangement, and a chamber body with a distal end, a proximal end and a hollow interior, wherein the stem of the rod element extends into the hollow interior of the chamber body of the dosage member and the delivery orifice is arranged adjacent to the proximal end of the stem of the rod element; and
a switching mechanism for changing the medical delivery device from a dosing status to a delivery status, the switching mechanism including a disengaging structure,
wherein in the dosing status of the medical delivery device,
the rod element is movable along its longitudinal axis relative to the delivery orifice of the dosage member by the first thread arrangement of the stem of the rod element and the second thread arrangement of the dosage member engaging with and travelling along each other, wherein a dosage chamber is formed in the interior of the chamber body of the dosage member between the stem of the rod element and the delivery orifice which dosage chamber increases when the rod element moves away from the delivery orifice, and moving the rod element along its longitudinal axis by applying an axial force to the rod element is prevented by the engagement between the first thread arrangement of the stem of the rod element and the second thread arrangement of the dosage member, and
wherein in the delivery status of the medical delivery device,
the rod element is movable along its longitudinal axis relative to the delivery orifice by applying an axial force to the rod element, and moving the rod element along its longitudinal axis by travelling the first thread arrangement of the stem of the rod element and the second thread arrangement along each other is prevented by the disengaging structure of the switch element which disengages the first thread arrangement of the stem of the rod element from the second thread arrangement of the dosage member upon changing the medical delivery device from the dosing status to the delivery status.