FORM STABLE BREAST IMPLANT SIZER AND METHOD OF USE

• US 20090149953A1
• Filed: 11/20/2008
• Published: 06/11/2009
• Est. Priority Date: 12/10/2007
• Status: Abandoned Application

• Current Assignee: Allergan, Inc. (Canada) (Abbvie Incorporated)
• Original Assignee: Allergan, Inc. (Canada) (Abbvie Incorporated)
• Inventors: Torjesen, Erik, Schuessler, David J.
• Application Number:
  US12/275,111
• Publication Number:
  US 20090149953A1
• Time in Patent Office: Days
• US Class Current: 623/8
• CPC Class Codes: A61B 2017/00716 simulating physical properties
• CPC Class Codes: A61B 2090/061 for measuring dimensions, e.g. length
• CPC Class Codes: A61B 90/02 Devices for expanding tissue, e.g. skin tissue implements for holding wounds open, surgical tractors A61B17/02; implantable mammary prosthesis A61F2/12; dilators A61M29/00
• CPC Class Codes: A61B 90/06 Measuring instruments not otherwise provided for
• CPC Class Codes: A61F 2/12 Mammary prostheses and implants
• CPC Class Codes: A61F 2250/0059 temporary

Abstract

An insertable preformed sizer for a breast implant that regains its form after deformation and insertion into a cavity formed within breast tissue. The sizer is used to evaluate the size of the cavity and help determine proper sizes and shapes of breast implants to use. The implant sizer is intended to be disposable and is made of a cost-efficient material such as a medical grade foam or elastomer. The foam or elastomer material has the ability to be squeezed or collapsed into an extremely small delivery shape and then resiliently expand back to its original shape against the constraining forces of surrounding breast tissue.

Claims

1. A method of evaluating a desired size and shape of implant for a breast implant surgery, comprising:

preparing a patient for a breast implant surgery, including forming an incision opening to a cavity within breast tissue;

providing a preformed implant sizer made of a highly compressible material that enables the implant sizer to be compressed from a relaxed size approximating the size of a corresponding implant and having an uncompressed volume, to an insertion size that has an insertion volume less than the uncompressed volume;

compressing the implant sizer from its relaxed size to its insertion size;

inserting the compressed implant sizer through the incision and into the cavity, and permitting it to expand therein;

observing the external characteristics of the breast with the implant sizer inserted therein; and

removing the implant sizer from the cavity.

2. The method of claim 1, including compressing the implant sizer to an insertion size that has an insertion volume less than about 80% of the uncompressed volume.

3. The method of claim 2, including compressing the implant sizer to an insertion size that has an insertion volume less than about 50% of the uncompressed volume.

4. The method of claim 1, wherein the step of compressing comprises an act selected from the group consisting of:

folding the implant sizer, and

rolling the implant sizer into an elongated shape.

5. The method of claim 1, wherein the highly compressible material is made of a self-skinning foam.

6. A method of evaluating a desired size and shape of implant for a breast implant surgery, comprising:

preparing a patient for a breast implant surgery, including forming an incision opening to a cavity within breast tissue;

providing a preformed implant sizer made of a collapsible form including an anterior continuous wall and a posterior hollow space that enables the implant sizer to be collapsed from a relaxed size approximating the size of a corresponding implant and having an uncollapsed volume, to an insertion size that has an insertion volume less than the uncollapsed volume;

collapsing the implant sizer from its relaxed size to its insertion size;

inserting the collapsed implant sizer through the incision and into the cavity, and permitting it to expand therein;

observing the external characteristics of the breast with the implant sizer inserted therein; and

removing the implant sizer from the cavity.

7. The method of claim 6, wherein the implant sizer includes at least one hollow on a posterior side thereof that provides a fold relief about which the implant sizer can be folded.

8. The method of claim 6, wherein the step of collapsing comprises one of rolling the implant sizer into an elongated shape and folding the implant sizer.

9. The method of claim 6, wherein the collapsible form is made of highly compressible material.

10. The method of claim 9, wherein the highly compressible material is at least partially a foam.

12. The sizer of claim 13, wherein the highly compressible material can be compressed to less than about 50% of its uncompressed solid volume.

13. The sizer of claim 9, wherein the highly compressible material is a self-skinning foam.

11. An insertable sizer for a breast implant, comprising:

a preformed solid form made of a highly compressible material that can be compressed to less than about 80% of its uncompressed solid volume.

14. An insertable sizer for a breast implant, comprising:

a preformed collapsible form including an anterior continuous wall and a posterior hollow space.

15. The sizer of claim 14, wherein the collapsible form is made of highly compressible material.

16. The sizer of claim 15, wherein the highly compressible material is at least partially a foam.

17. The sizer of claim 14, wherein the collapsible form includes fold reliefs that determine a fold orientation.

18. A set of insertable breast implant sizers, comprising:

a marketed collection of at least two differently-sized or shaped preformed collapsible implant sizers that may be collapsed from a relaxed size approximating the size of a corresponding implant and having a relaxed volume, to an insertion size that has an insertion volume less than the relaxed volume.

19. The set of claim 18, wherein each implant sizer in the set is made of a highly compressible material.

20. The set of claim 18, wherein the set includes one base portion and a plurality of differently-sized profile portions each which couple to the base portion to form a complete sizer.