Device and method for making a variable surface breast implant

• US 9,688,006 B2
• Filed: 12/13/2013
• Issued: 06/27/2017
• Est. Priority Date: 12/13/2012
• Status: Active Grant

• Current Assignee: Allergan Incorporated (Abbvie Incorporated)
• Original Assignee: Allergan Incorporated (Abbvie Incorporated)
• Inventors: Van Epps, Dennis, Nieto, Robert L., Renteria, Claudia, Ngo, Phat, Schuessler, David
• Primary Examiner(s): Khare, Atul P.
• Application Number:
  US14/106,524
• Publication Number:
  US 20140180412A1
• Time in Patent Office: 1,292 Days
• Field of Search: 264301, 264305, 264306
• CPC Class Codes: A61F 2/0077 Special surfaces of prostheses, e.g. for improving ingrowth A61F2/30767 takes precedence
• CPC Class Codes: A61F 2/12 Mammary prostheses and implants
• CPC Class Codes: A61F 2240/001 Designing or manufacturing processes
• CPC Class Codes: B05D 1/18 performed by dipping
• CPC Class Codes: B05D 5/02 to obtain a matt or rough surface
• CPC Class Codes: B29C 2791/001 Shaping in several steps
• CPC Class Codes: B29C 37/0053 Moulding articles characterised by the shape of the surface, e.g. ribs, high polish mould construction therefor B29C33/42; surface shaping of articles B29C59/00; by incorporating filler in or near the surface B29C70/64
• CPC Class Codes: B29C 41/02 for making articles of definite length, i.e. discrete articles
• CPC Class Codes: B29C 41/025 having hollow walls
• CPC Class Codes: B29C 41/08 Coating a former, core or other substrate by spraying or fluidisation, e.g. spraying powder spray-up of reinforcing fibres B29C70/305
• CPC Class Codes: B29C 41/14 Dipping a core B29C41/10 takes precedence
• CPC Class Codes: B29C 41/34 Component parts, details or accessories; Auxiliary operations
• CPC Class Codes: B29C 41/38 Moulds, cores or other substrates
• CPC Class Codes: B29C 41/40 Cores
• CPC Class Codes: B29K 2995/0072 Roughness, e.g. anti-slip
• CPC Class Codes: B29L 2031/7532 Artificial members, protheses

Abstract

Devices and methods are provided for making a variable textured breast implant when used in conjunction with a breast implant mandrel having a molding surface and a stem depending therefrom.

Claims

1. A method for making a textured breast implant, the method comprising the steps of:

providing a breast implant mandrel comprising a base and a stem depending from the base, the mandrel being covered with a silicone elastomer shell;

providing a device comprising;

a member structured to engage the breast implant mandrel, the member including a base-engaging distal portion and a stem-engaging proximal portion depending from the base-engaging distal portion,

wherein the base-engaging distal portion comprises a base-engaging surface, an aperture defined in the base-engaging surface, and a proximally sloping rim circumscribing the base-engaging surface, and

wherein the stem-engaging proximal portion is structured to receive the stem of the mandrel,

securing the device to the mandrel over the silicone elastomer shell;

coating the breast implant mandrel with a tacky elastomer;

immersing the breast implant mandrel and device secured thereto into a bath of texturing particles;

removing the device from the mandrel;

curing the tacky elastomer; and

removing the texturing particles after the curing,

wherein the member provides a barrier preventing the texturing particles from contacting a portion of the mandrel and silicone elastomer shell thereover during the immersing so that the portion remains smooth or untextured after the curing.

2. The method of claim 1 further comprising, prior to the removing step, repeating the steps of coating and immersing to reach a desired texture thickness.

3. The method of claim 1 wherein the base-engaging surface of the device is a substantially conically shaped surface.

4. The method of claim 1 wherein the base-engaging surface is a substantially conically shaped surface and the aperture is disposed generally in a center of the conically shaped surface.

5. The method of claim 1 wherein the proximally sloping rim slopes at an angle substantially equal to a slope of the mandrel base such that the proximally sloping rim substantially aligns with the mandrel base when the device is secured to the mandrel so that the mandrel is seated in the base-engaging portion.

6. A method for making a textured breast implant, the method comprising the steps of:

providing a breast implant mandrel having a particle-coated tacky surface over a base of the mandrel, the mandrel comprising a stem depending from the base;

providing a device comprising;

a member structured to engage the breast implant mandrel, the member including a base-engaging distal portion and a stem-engaging proximal portion depending from the base-engaging distal portion,

wherein the base-engaging distal portion comprises a base-engaging surface, an aperture defined in the base-engaging surface, and a proximally sloping rim circumscribing the base-engaging surface, and

wherein the stem-engaging proximal portion structured to receive the stem of the mandrel,

securing the device to the breast implant mandrel such that the device covers a portion of the particle coated tacky surface;

immersing the breast implant mandrel and device secured thereto into an elastomeric dispersion to form an elastomer coating on the mandrel;

immersing the breast implant mandrel and device secured thereto into a bath of texturing particles over the elastomer coating;

removing the device from the mandrel;

curing the elastomer coating; and

removing the texturing particles thereby producing a textured breast implant having a variable textured surface,

wherein the member provides a barrier preventing the dispersion and the texturing particles from contacting the portion of the particle coated tacky surface covered by the device during the immersing steps so that the covered portion comprises fewer textured layers than an exposed portion of the tacky surface subjected to the immersing steps.

7. A method for making a variable textured breast implant, the method comprising the steps of:

providing a breast implant mandrel having a molding surface and a stem depending therefrom, with a cured elastomeric breast implant shell disposed on the molding surface;

providing a device comprising a member structured to engage the breast implant mandrel, the member including a base-engaging distal portion and a stem-engaging proximal portion depending from the base-engaging distal portion, the base-engaging distal portion comprising a base-engaging surface for engaging the molding surface, an aperture defined in the base-engaging surface, and a proximally sloping rim circumscribing the base-engaging surface;

positioning the device onto the mandrel over a portion of the shell;

contacting the cured elastomeric implant shell on the molding surface with a tacky elastomer;

contacting the tacky elastomer with texturing particles;

removing the device from the mandrel; and

removing the texturing particles from the tacky elastomer to thereby create a variable textured breast implant,

wherein the device provides a barrier preventing the tacky elastomer and texturing particles from contacting the shell portion during the contacting with tacky elastomer and texturing particles so that the shell portion remains smooth or untextured after the removing.

8. The method of claim 7 further comprising, after the step of contacting with texturing particles, repeating, at least once, the steps of contacting with tacky elastomer and contacting with texturing particles, to form a layered elastomer and particle coating having a desired thickness.