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Transdermal therapeutic system with pressure generating device

  • US 9,895,521 B2
  • Filed: 02/12/2016
  • Issued: 02/20/2018
  • Est. Priority Date: 08/23/2013
  • Status: Active Grant
First Claim
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1. A transdermal therapeutic system (10) for introducing liquid or liquefiable substance into skin (2) of a patient, including a system support (21) comprising a concave body including a cover part (26) and wall parts (27) adjoining the cover part (26), the cover part (26) and the wall parts (27) in operative arrangement to form a shell (25), an interior (28) of the system support (21) is delimited on five sides by the shell (25), the system support (21) includes a support part (23) including a bearing surface (24) facing toward the skin (2) in an operative position, at least one advancing element (31) is arranged in the interior (28) of the system support (21) and is flush with the bearing surface (24) or it protrudes from the bearing surface (24) in the direction of the skin (2) in the operative position, and at least one active substance reservoir (41) which is elastically deformable at least in some regions and which is embedded into the advancing element (31), wherein, on an application side (11) of the transdermal therapeutic system (10), the shell (25) of the system support (21) surrounds the advancing element (31), and the latter surrounds the active substance reservoir (41), and wherein the advancing element (31) comprises a swelling body (31) which is expanded by liquid uptake, characterized in that the system support (21) is deformation-resistant at least in some regions.

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