US 11,730,936 B2
Applicator device
Maikel Hendriks, Amsterdam (NL); and Pieternella Anna Maria Bouter, Amsterdam (NL)
Assigned to MEDICAL BRANDS RESEARCH B.V., Amsterdam (NL)
Appl. No. 16/346,595
Filed by MEDICAL BRANDS RESEARCH B.V., Amsterdam (NL)
PCT Filed Nov. 8, 2017, PCT No. PCT/EP2017/078588
§ 371(c)(1), (2) Date May 1, 2019,
PCT Pub. No. WO2018/087140, PCT Pub. Date May 17, 2018.
Claims priority of application No. 16197752 (EP), filed on Nov. 8, 2016; and application No. 16203647 (EP), filed on Dec. 13, 2016.
Prior Publication US 2019/0255305 A1, Aug. 22, 2019
Int. Cl. A61M 35/00 (2006.01); A61K 8/36 (2006.01); A61K 8/81 (2006.01); A45D 34/04 (2006.01); B65D 83/00 (2006.01)
CPC A61M 35/003 (2013.01) [A45D 34/042 (2013.01); A61K 8/36 (2013.01); A61K 8/8147 (2013.01); B65D 83/0005 (2013.01); A45D 2200/055 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An applicator device comprising an applicator tip and a container part, wherein the container part comprises:
(i) a container comprising a container wall, a valve, and a plunger, wherein the container wall, the valve, and the plunger together define a storage volume for containing a liquid, wherein the plunger comprises a first end, a second end and a concavely shaped circumferential wall bridging the first and second ends, wherein the circumferential wall sealingly contacts the container wall, and wherein during use the first end contacts the liquid and the second end does not contact the liquid; and
(ii) a plunger advance system functionally coupled to the plunger and configured to advance the plunger for reducing the storage volume for expelling at least part of the liquid via said valve to said tip, wherein the plunger advance system is arranged outside the storage volume; wherein
(a) the valve comprises a first spring system comprising a first spring material comprising a stainless steel material comprising a molybdenum content in a range of 0.5-7 wt. %, and wherein
(b) the plunger advance system comprises a second spring system comprising a second spring material comprising a stainless steel material comprising a molybdenum content in a range of 0.5-7 wt. %, and wherein
(c) the plunger advance system comprises a polymer selected from the group consisting of polypropylene (PP), ethylene chlorotrifluoroethylene (ECTFE), and polyoxymethylene (POM);
and wherein
(d) the plunger advance system comprises a spindle system comprising a ratchet system comprising a first element and a second element, wherein the second spring system is configured to provide the first element and the second element to engage on each other.