Applicator and tissue interface module for dermatological device

• US 9,028,477 B2
• Filed: 09/03/2013
• Issued: 05/12/2015
• Est. Priority Date: 08/01/2011
• Status: Active Grant

• Current Assignee: miraDry, Inc. (Sientra Incorporated)
• Original Assignee: Miramar Labs, Inc. (Sientra Incorporated)
• Inventors: Ben-Haim, Yoav, Bentley, Peter J., Chun, Dong Hoon, Francis, Daniel, Johnson, Jessi E., Shan, Kevin, Su, Ted, Kim, Steven
• Primary Examiner(s): Peffley, Michael
• Assistant Examiner(s): FOWLER, DANIEL WAYNE
• Application Number:
  US14/017,070
• Publication Number:
  US 20140005645A1
• Time in Patent Office: 616 Days
• US Class Current: 606/33
• CPC Class Codes: A61B 18/1815 using microwaves
• CPC Class Codes: A61B 2017/00681 Aspects not otherwise provided for
• CPC Class Codes: A61B 2018/00023 closed, i.e. without wound contact by the fluid
• CPC Class Codes: A61B 2018/00291 using suction
• CPC Class Codes: A61B 2018/00452 Skin
• CPC Class Codes: A61B 2018/00821 measured by a thermocouple
• CPC Class Codes: A61N 5/04 Radiators for near-field treatment

Abstract

A tissue interface module has an applicator chamber on a proximal side of the tissue interface module and a tissue acquisition chamber on a distal side of the tissue interface module. The applicator chamber may include: an opening adapted to receive the applicator; an attachment mechanism positioned in the applicator chamber and adapted to attach the tissue interface module to the applicator; a sealing member positioned at a proximal side of the applicator chamber; and a vacuum interface positioned at a proximal side of the applicator chamber and adapted to receive a vacuum inlet positioned on a distal end of the applicator. The invention also includes corresponding methods.

Claims

1. A tissue interface module, said tissue interface module comprising:

an applicator chamber, said applicator chamber being positioned on a proximal side of said tissue interface module;

a tissue acquisition chamber, said tissue acquisition chamber being positioned on a distal side of said tissue interface module;

a bio-barrier positioned between, and in fluid communication with, said applicator chamber and said tissue acquisition chamber, said bio-barrier being;

substantially impermeable;

flexible; and

microwave transparent;

a vacuum path, said vacuum path extending from a distal end of said tissue acquisition chamber to a proximal end of said applicator chamber and comprising;

a filter;

a vacuum trap; and

an expandable aperture;

said vacuum path being adapted to facilitate the flow of air from said tissue acquisition chamber, through said expandable aperture, through said vacuum trap, through said filter and into said applicator chamber when the applicator chamber is attached to a vacuum source.

2. A tissue interface module according to claim 1, said tissue interface module further comprising:

an outer shell;

an inner insert, said inner insert;

being positioned in said outer shell to form a body of said tissue interface module;

a gasket, said gasket;

being positioned on said inner insert;

providing a vacuum seal between said inner insert and said outer shell on a distal side of said gasket,

being shaped to provide a vacuum seal to an applicator on a proximal side of said gasket; and

forming a portion of said vacuum trap.

3. A tissue interface module according to claim 2, said tissue interface module further comprising a reflector, said reflector:

reflecting at least a portion of any microwave energy entering said applicator chamber;

being electrically isolated from an applicator positioned in said applicator chamber;

being positioned between said outer shell and said inner insert; and

having a distal end surrounding at least a portion of said tissue acquisition chamber.

4. A tissue interface module according to claim 2, said tissue interface module further comprising a latch plate, said latch plate:

being positioned in said applicator chamber;

being positioned on said inner insert;

including an attachment surface, wherein said attachment surface forms a predetermined angle with said bio-barrier when said bio-barrier is in a first position.

5. A tissue interface module according claim 4 wherein said predetermined angle is between 17.5 degrees and 27.5 degrees.

6. A tissue interface module according claim 5 wherein said predetermined angle is approximately 22.5 degrees.