US20150282926A1 - Gravity sensitive silicone breast implants - Google Patents
Gravity sensitive silicone breast implants Download PDFInfo
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- US20150282926A1 US20150282926A1 US14/679,788 US201514679788A US2015282926A1 US 20150282926 A1 US20150282926 A1 US 20150282926A1 US 201514679788 A US201514679788 A US 201514679788A US 2015282926 A1 US2015282926 A1 US 2015282926A1
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- gravity sensitive
- breast implant
- implant
- sensitive silicone
- silicone breast
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/12—Mammary prostheses and implants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/14—Macromolecular materials
- A61L27/18—Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/04—Macromolecular materials
- A61L31/06—Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0076—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof multilayered, e.g. laminated structures
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0073—Quadric-shaped
- A61F2230/0076—Quadric-shaped ellipsoidal or ovoid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0073—Quadric-shaped
- A61F2230/008—Quadric-shaped paraboloidal
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2400/00—Materials characterised by their function or physical properties
- A61L2400/12—Nanosized materials, e.g. nanofibres, nanoparticles, nanowires, nanotubes; Nanostructured surfaces
Definitions
- Implantable devices Today, the augmentation and reconstruction of the human breast, requiring the use of an implant, has become a fairly common practice in the art of plastic and reconstructive surgery.
- Typical long-term implantable devices which are often selected for these procedures, include round or preformed anatomically shaped silicone gel-filled implants.
- implantable devices for breast augmentation are needed.
- the present invention provides, in various embodiments, a gravity sensitive silicone breast implant that has a soft, natural feel and is capable of adapting shape after implantation responsive to gravity, according to movements of the patient.
- the invention provides a gravity sensitive silicone breast implant comprising a flexible multilayer shell and a cohesive silicone gel filler with a high elasticity and a low viscosity.
- the implant is configured to shift its maximum point of projection when subjected to gravity.
- the flexible multilayer shell of the implant reaches at least 25% elongation at forces of about 1.4 N to about 1.9 N and at least 50% elongation at forces of about 1.8 N to about 2.2 N when tested in accordance with ASTM D412.
- the silicone gel filler reaches about 2 mm to about 29 mm protrusion in a cone cohesion test and will not detach from the cone when tested in accordance with ASTM F703.
- the flexible multilayer shell has a nano-textured outer surface. In other embodiments, the flexible multilayer shell has a micro-textured outer surface.
- the flexible multilayer shell has a thickness of about 0.008 in to about 0.030 in.
- the flexible multilayer shell includes at least one low diffusion barrier layer.
- the low diffusion barrier layer comprises a polysiloxane backbone having at least 10 mole percent of a pendant chemical group that retards permeation of silicone gel through the low diffusion barrier layer.
- the low diffusion barrier layer comprises a polydimethylsiloxane backbone having at least 10 mole percent of a pendant chemical group comprising at least one of a phenyl group and a fluorine group.
- the low diffusion barrier layer comprises a polydimethylsiloxane backbone having at least 10 mole percent of a pendant chemical group comprising at least one of a diphenyl group, a methylphenyl group, a trifluoropropyl group, and mixtures thereof
- the low diffusion barrier layer has a color.
- the gravity sensitive silicone breast implant has a round base.
- the gravity sensitive silicone breast implant has an oval base.
- FIG. 1 shows the variation in the shape and the shifting of the maximum point of projection from the apex of a gravity sensitive silicone breast implant of the present invention, according to some embodiments.
- FIG. 2 shows the variation in the shape and the shifting of the maximum point of projection from the apex of the breast implant before implantation and after implantation when the patient is standing up, according to some embodiments.
- FIG. 3 shows two possible base variations of the invention, at left, where A and B are different measures (oval base) and, at right, where A and B are equal measures (round base).
- Typical silicone gel-filled breast implants are mammary augmentation devices constructed of a shell comprising successive cross-linked layers of silicone elastomer, which gives the implants their elasticity and integrity. All silicone gel-filled implants are composed, at least, of the above-mentioned shell, a silicone patch, and silicone gel fill.
- Preformed anatomical implants work on the basis of retaining at all times after implantation a predefined form that is viewed as anatomically correct for the breasts. This is achieved by means of creating an implant that retains its form by utilizing a highly cohesive filling gel with a high viscosity and a low elasticity, together with a shell made to maintain its form at all times. The aesthetic result is very good, as long as the patient is upright, motionless, and as long as the breasts are not touched.
- Preformed anatomical implants are hard and, once implanted, maintain their form independently of the position or action taken by the patient. These implants do not resemble the human tissue in movement or when touched. There is no natural interaction between the breast tissue and the silicone breast implant. Patients and their partners typically complain about how unnatural those implants feel and behave after implantation.
- the present invention provides, in various embodiments, an alternative to anatomical preformed breast implants that eliminates the above-described problems associated with their use, but maintains their positive aesthetic features.
- the invention provides a silicone breast implant: without an aggressively textured outer surface; with a consistency similar to human tissue; which replicates and allows the natural movements of the body; and/or which eliminates or greatly diminishes the problem of implant rotation.
- the present invention provides, in various embodiments, a gel-filled implant consisting of an internal cohesive silicone gel and a flexible silicone shell enclosing the gel. Once implanted, the implant will shift its point of maximum projection according to the movements of the patient, driven only by the force of gravity. This shifting enables the implant resemble the movement of natural breast tissue to obtain a real anatomical result.
- the implant has a sensation to touch soft enough to resemble the sensation of breast tissue.
- the implant of the present invention provides an improved, closer reproduction of natural breast tissue according to standard visual and tactile perceptions.
- the implant of the present invention advantageously adapts shape after implantation to give the natural look of traditional preformed anatomical implants, without the complications associated with rotation, implant hardness, and/or aggressive textures.
- the implant of the present invention when subjected to gravity, will advantageously shift the maximum point of projection to the lower pole of the implant when the patient is in a standing position. When the patient lays flat on her back, the implant will react as a natural breast and the maximum point of projection will move closer to the middle point of her breast.
- the implant can have a round or oval base where all four quadrants are equivalent.
- this condition allows the placement of the implant using the same techniques employed for the placement of non-anatomical breast implants, which makes for a simpler procedure.
- the breast implant of the present invention having a round base can rotate in its vertical axis without impairing that result.
- the surgeon may choose whether the physical characteristics of the patient call for the placement of the implant in a vertical alignment of the longest or shortest diameter of the implant with the patient's height. Due to the adaptation of the implant according to the gravity pull, the aesthetic result in case of a rotation would not be seriously affected, or would not be noticeable to a large degree, minimizing the possible complication. Since the gravity vector is equal in rotated or non-rotated implants, the maximum point of projection would tend to be localized in the same desired area.
- implants of the present invention Due to the described characteristics of the implants of the present invention that eliminate or diminish the incidence of rotation as a possible complication in breast augmentation procedures, the need for aggressive textures on the outer side of the implant shell is advantageously eliminated or diminished. Accordingly, implants of the present invention can have a smooth (e.g., nano-textured or micro-textured) outer surface throughout, thus negating the additional range of complications that can develop from the use of aggressive textures.
- the shell of the implant of the present invention is a multilayer structure with at least one low diffusion barrier layer included with (inside, outside, or nestled between) a plurality of standard silicone elastomer layers.
- the barrier layer(s) can be, for example, made of silicone elastomer comprising a polysiloxane backbone and having a minimum mole percentage of 10% of a substituted or pendant chemical group that retards permeation of silicone gel through the layer.
- the silicone elastomer present in the barrier layer(s) is a polydimethylsiloxane and the pendant chemical group is a phenyl group (e.g., a diphenyl group or a methylphenyl group), a fluorine group (e.g., a trifluoropropyl group), or a mixture thereof.
- the shell may comprise colored barrier layer(s) as described, for example, in U.S. patent application Ser. No. 13/412,221, which is incorporated herein by reference in its entirety.
- the step of forming the shell comprises coating a mold with a liquid elastomer; the shell may be formed by dipping, spraying, pouring, blowing or rotational molding, using a suitably shaped mold, coated with dispersion of a silicone elastomer and a solvent, allowing the solvent to volatize, and allowing the elastomer to cure.
- the implant of the present invention achieves a pliable sensation resembling breast tissue and the possibility of varying its shape from the use of an outer silicone elastomer shell that is able to stretch with the application of small forces which may come from the movement of the gel or the application of force by hand. This flexibility can be measured and demonstrated by calculating the stress of the shell at 25% and 50% elongation on the apex section of the shell.
- implants of the present invention comprise an outer shell having an average thickness ranging from 0.008 to 0.030 inches, and requiring forces at the apex from about 1.4 to about 1.9 N when tested for stress at 25% elongation and from about 1.8 to about 2.2 N when tested for stress at 50% elongation, measured according to ASTM D412.
- movement or conformation of the implant mass according to the gravity vector is obtained by using a cohesive silicone gel filler with a high elasticity and a low viscosity.
Abstract
Description
- This application claims the benefit of, and priority to, U.S. Provisional Application No. 61/975,474, filed Apr. 4, 2014, entitled “Gravity Sensitive Silicone Breast Implants,” which is incorporated herein by reference in its entirety.
- Today, the augmentation and reconstruction of the human breast, requiring the use of an implant, has become a fairly common practice in the art of plastic and reconstructive surgery. Typical long-term implantable devices, which are often selected for these procedures, include round or preformed anatomically shaped silicone gel-filled implants. However, such implants have a number of drawbacks, including but not limited to a hard, unnatural feel and behavior. Improved implantable devices for breast augmentation are needed.
- The present invention provides, in various embodiments, a gravity sensitive silicone breast implant that has a soft, natural feel and is capable of adapting shape after implantation responsive to gravity, according to movements of the patient.
- In one aspect, the invention provides a gravity sensitive silicone breast implant comprising a flexible multilayer shell and a cohesive silicone gel filler with a high elasticity and a low viscosity. The implant is configured to shift its maximum point of projection when subjected to gravity. The flexible multilayer shell of the implant reaches at least 25% elongation at forces of about 1.4 N to about 1.9 N and at least 50% elongation at forces of about 1.8 N to about 2.2 N when tested in accordance with ASTM D412. The silicone gel filler reaches about 2 mm to about 29 mm protrusion in a cone cohesion test and will not detach from the cone when tested in accordance with ASTM F703.
- In some embodiments, the flexible multilayer shell has a nano-textured outer surface. In other embodiments, the flexible multilayer shell has a micro-textured outer surface.
- In some embodiments, the flexible multilayer shell has a thickness of about 0.008 in to about 0.030 in.
- In some embodiments, the flexible multilayer shell includes at least one low diffusion barrier layer.
- In some embodiments, the low diffusion barrier layer comprises a polysiloxane backbone having at least 10 mole percent of a pendant chemical group that retards permeation of silicone gel through the low diffusion barrier layer.
- In some embodiments, the low diffusion barrier layer comprises a polydimethylsiloxane backbone having at least 10 mole percent of a pendant chemical group comprising at least one of a phenyl group and a fluorine group.
- In some embodiments, the low diffusion barrier layer comprises a polydimethylsiloxane backbone having at least 10 mole percent of a pendant chemical group comprising at least one of a diphenyl group, a methylphenyl group, a trifluoropropyl group, and mixtures thereof
- In some embodiments, the low diffusion barrier layer has a color.
- In some embodiments, the gravity sensitive silicone breast implant has a round base.
- In alternative embodiments, the gravity sensitive silicone breast implant has an oval base.
- Additional features and advantages of the present invention are described further below. This summary section is meant merely to illustrate certain features of the invention, and is not meant to limit the scope of the invention in any way. The failure to discuss a specific feature or embodiment of the invention, or the inclusion of one or more features in this summary section, should not be construed to limit the invention as claimed.
- The foregoing summary, as well as the following detailed description of the preferred embodiments of the application, will be better understood when read in conjunction with the appended drawings. For the purposes of illustrating the implants of the present application, there are shown in the drawings preferred embodiments. It should be understood, however, that the application is not limited to the precise arrangements and instrumentalities shown. In the drawings:
-
FIG. 1 shows the variation in the shape and the shifting of the maximum point of projection from the apex of a gravity sensitive silicone breast implant of the present invention, according to some embodiments. -
FIG. 2 shows the variation in the shape and the shifting of the maximum point of projection from the apex of the breast implant before implantation and after implantation when the patient is standing up, according to some embodiments. -
FIG. 3 shows two possible base variations of the invention, at left, where A and B are different measures (oval base) and, at right, where A and B are equal measures (round base). - Typical silicone gel-filled breast implants are mammary augmentation devices constructed of a shell comprising successive cross-linked layers of silicone elastomer, which gives the implants their elasticity and integrity. All silicone gel-filled implants are composed, at least, of the above-mentioned shell, a silicone patch, and silicone gel fill.
- The objective of most of the surgical procedures performed to increase breast size, including all reconstruction procedures, is to recreate the feel, look and behavior of the natural breast tissue. In the past, this objective has been addressed by means of creating preformed anatomical implants to reproduce the natural shape of the human breast. Nevertheless, this approach has created problems of its own that in many aspects deter from the original intention.
- Preformed anatomical implants work on the basis of retaining at all times after implantation a predefined form that is viewed as anatomically correct for the breasts. This is achieved by means of creating an implant that retains its form by utilizing a highly cohesive filling gel with a high viscosity and a low elasticity, together with a shell made to maintain its form at all times. The aesthetic result is very good, as long as the patient is upright, motionless, and as long as the breasts are not touched. Preformed anatomical implants are hard and, once implanted, maintain their form independently of the position or action taken by the patient. These implants do not resemble the human tissue in movement or when touched. There is no natural interaction between the breast tissue and the silicone breast implant. Patients and their partners typically complain about how unnatural those implants feel and behave after implantation.
- Additionally, traditional anatomical implants suffer from complications endemic to their kind Since they are preformed to have a teardrop-like form, they need to be implanted in a very precise position, and no deviation, movement or rotation is acceptable because it would show as a deformation of the breast. Rotation and misplacement of anatomical breast implants is very common and the only existing solution is re-operation.
- In an effort to avoid rotation and movement of preformed anatomical breast implants, manufacturing companies have opted to give these implants very rough and aggressive surface textures, with the purpose of making them adhere to the surrounding tissue, or at least create sufficient friction to avoid slippage. This approach has proven successful to some degree, but has created a new set of problems.
- Very aggressive surface textures on the outer shell of breast implants have been identified as the cause of newer complications originating in the shear forces causing irritation, which can develop into late seromas and double capsules, leading to the necessity of reoperation and additional procedures to attain a healthy and acceptable aesthetic outcome.
- The present invention provides, in various embodiments, an alternative to anatomical preformed breast implants that eliminates the above-described problems associated with their use, but maintains their positive aesthetic features. In various embodiments, the invention provides a silicone breast implant: without an aggressively textured outer surface; with a consistency similar to human tissue; which replicates and allows the natural movements of the body; and/or which eliminates or greatly diminishes the problem of implant rotation.
- The present invention provides, in various embodiments, a gel-filled implant consisting of an internal cohesive silicone gel and a flexible silicone shell enclosing the gel. Once implanted, the implant will shift its point of maximum projection according to the movements of the patient, driven only by the force of gravity. This shifting enables the implant resemble the movement of natural breast tissue to obtain a real anatomical result. The implant has a sensation to touch soft enough to resemble the sensation of breast tissue. The implant of the present invention provides an improved, closer reproduction of natural breast tissue according to standard visual and tactile perceptions.
- The implant of the present invention advantageously adapts shape after implantation to give the natural look of traditional preformed anatomical implants, without the complications associated with rotation, implant hardness, and/or aggressive textures. As shown, for example, in
FIGS. 1 and 2 , the implant of the present invention, when subjected to gravity, will advantageously shift the maximum point of projection to the lower pole of the implant when the patient is in a standing position. When the patient lays flat on her back, the implant will react as a natural breast and the maximum point of projection will move closer to the middle point of her breast. - As shown, for example, in
FIG. 3 , the implant can have a round or oval base where all four quadrants are equivalent. When employing a round base this condition allows the placement of the implant using the same techniques employed for the placement of non-anatomical breast implants, which makes for a simpler procedure. Even though the result resembles an anatomically correct breast, the breast implant of the present invention having a round base can rotate in its vertical axis without impairing that result. - When employing an oval base, the surgeon may choose whether the physical characteristics of the patient call for the placement of the implant in a vertical alignment of the longest or shortest diameter of the implant with the patient's height. Due to the adaptation of the implant according to the gravity pull, the aesthetic result in case of a rotation would not be seriously affected, or would not be noticeable to a large degree, minimizing the possible complication. Since the gravity vector is equal in rotated or non-rotated implants, the maximum point of projection would tend to be localized in the same desired area.
- Due to the described characteristics of the implants of the present invention that eliminate or diminish the incidence of rotation as a possible complication in breast augmentation procedures, the need for aggressive textures on the outer side of the implant shell is advantageously eliminated or diminished. Accordingly, implants of the present invention can have a smooth (e.g., nano-textured or micro-textured) outer surface throughout, thus negating the additional range of complications that can develop from the use of aggressive textures.
- In some embodiments, the shell of the implant of the present invention is a multilayer structure with at least one low diffusion barrier layer included with (inside, outside, or nestled between) a plurality of standard silicone elastomer layers. The barrier layer(s) can be, for example, made of silicone elastomer comprising a polysiloxane backbone and having a minimum mole percentage of 10% of a substituted or pendant chemical group that retards permeation of silicone gel through the layer. In some embodiments, the silicone elastomer present in the barrier layer(s) is a polydimethylsiloxane and the pendant chemical group is a phenyl group (e.g., a diphenyl group or a methylphenyl group), a fluorine group (e.g., a trifluoropropyl group), or a mixture thereof. In some embodiments, the shell may comprise colored barrier layer(s) as described, for example, in U.S. patent application Ser. No. 13/412,221, which is incorporated herein by reference in its entirety.
- Various systems and methods can be used for constructing a silicone implant elastomeric shell and they are contemplated in this invention. In some embodiments, the step of forming the shell comprises coating a mold with a liquid elastomer; the shell may be formed by dipping, spraying, pouring, blowing or rotational molding, using a suitably shaped mold, coated with dispersion of a silicone elastomer and a solvent, allowing the solvent to volatize, and allowing the elastomer to cure.
- In some embodiments, the implant of the present invention achieves a pliable sensation resembling breast tissue and the possibility of varying its shape from the use of an outer silicone elastomer shell that is able to stretch with the application of small forces which may come from the movement of the gel or the application of force by hand. This flexibility can be measured and demonstrated by calculating the stress of the shell at 25% and 50% elongation on the apex section of the shell. Existing silicone shelled breast implants have shells that require average forces from 2 to 3 Newtons (N) or higher when tested for stress at 25% elongation, and average forces from 2.7 to 3.5 N or higher when tested for stress at 50% elongation, measured according to ASTM D412 (Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers—Tension; see, e.g., www.astm.org/Standards/D412.htm). In contrast, in various embodiments, implants of the present invention comprise an outer shell having an average thickness ranging from 0.008 to 0.030 inches, and requiring forces at the apex from about 1.4 to about 1.9 N when tested for stress at 25% elongation and from about 1.8 to about 2.2 N when tested for stress at 50% elongation, measured according to ASTM D412.
- In some embodiments of the present invention, movement or conformation of the implant mass according to the gravity vector is obtained by using a cohesive silicone gel filler with a high elasticity and a low viscosity. The desired cohesiveness characteristics are preferably achieved using a gel that will attain a value in the range of 2 to 29 mm protrusion in the cone cohesion test and that will not detach from the cone, according to the test previewed in ISO 14607:2009 (Non-active surgical implants—Mammary implants—Particular requirements; see, e.g., www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm?csnumber=38760) and ASTM F703 (Standard Specification for Implantable Breast Prostheses; see, e.g., http://www.astm.org/Standards/F703.htm).
- While there have been shown and described fundamental novel features of the invention as applied to the preferred and exemplary embodiments thereof, it will be understood that omissions and substitutions and changes in the form and details of the disclosed invention may be made by those skilled in the art without departing from the spirit of the invention. Moreover, as is readily apparent, numerous modifications and changes may readily occur to those skilled in the art. Hence, it is not desired to limit the invention to the exact construction and operation shown and described and, accordingly, all suitable modification equivalents may be resorted to falling within the scope of the invention as claimed. It is the intention, therefore, to be limited only as indicated by the scope of the claims appended hereto.
Claims (11)
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US14/679,788 US20150282926A1 (en) | 2014-04-04 | 2015-04-06 | Gravity sensitive silicone breast implants |
US16/027,726 US11109956B2 (en) | 2014-04-04 | 2018-07-05 | Gravity sensitive silicone breast implants |
US17/398,332 US20210361410A1 (en) | 2014-04-04 | 2021-08-10 | Gravity sensitive silicone breast implants |
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US201461975474P | 2014-04-04 | 2014-04-04 | |
US14/679,788 US20150282926A1 (en) | 2014-04-04 | 2015-04-06 | Gravity sensitive silicone breast implants |
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US16/027,726 Active US11109956B2 (en) | 2014-04-04 | 2018-07-05 | Gravity sensitive silicone breast implants |
US17/398,332 Pending US20210361410A1 (en) | 2014-04-04 | 2021-08-10 | Gravity sensitive silicone breast implants |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017137853A2 (en) | 2016-02-09 | 2017-08-17 | Establishment Labs S.A. | Transponders and sensors for implantable medical devices and methods of use thereof |
WO2017196973A2 (en) | 2016-05-11 | 2017-11-16 | Establishment Labs S.A. | Medical implants and methods of preparation thereof |
WO2019246559A1 (en) | 2018-06-22 | 2019-12-26 | Establishment Labs S.A. | Systems and methods for simulation and modeling of combined augmentation procedures |
US10765501B2 (en) | 2008-08-13 | 2020-09-08 | Allergan, Inc. | Dual plane breast implant |
US10864661B2 (en) | 2012-12-13 | 2020-12-15 | Allergan, Inc. | Device and method for making a variable surface breast implant |
US10898607B2 (en) | 2009-03-27 | 2021-01-26 | Allergan, Inc. | Bioerodible matrix for tissue involvement |
CN112689485A (en) * | 2018-07-25 | 2021-04-20 | 制定实验室公司 | Implant with symmetrical shape |
US11202853B2 (en) | 2010-05-11 | 2021-12-21 | Allergan, Inc. | Porogen compositions, methods of making and uses |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120232652A1 (en) * | 2011-03-07 | 2012-09-13 | Rolando Mora | Implant with a visual indicator of a barrier layer |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5104409A (en) * | 1989-01-10 | 1992-04-14 | Baker James L | Mammary implant |
US20100226943A1 (en) * | 2004-02-17 | 2010-09-09 | University Of Florida | Surface topographies for non-toxic bioadhesion control |
US20120232652A1 (en) * | 2011-03-07 | 2012-09-13 | Rolando Mora | Implant with a visual indicator of a barrier layer |
-
2015
- 2015-04-06 US US14/679,788 patent/US20150282926A1/en not_active Abandoned
-
2018
- 2018-07-05 US US16/027,726 patent/US11109956B2/en active Active
-
2021
- 2021-08-10 US US17/398,332 patent/US20210361410A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5104409A (en) * | 1989-01-10 | 1992-04-14 | Baker James L | Mammary implant |
US20100226943A1 (en) * | 2004-02-17 | 2010-09-09 | University Of Florida | Surface topographies for non-toxic bioadhesion control |
US20120232652A1 (en) * | 2011-03-07 | 2012-09-13 | Rolando Mora | Implant with a visual indicator of a barrier layer |
Non-Patent Citations (2)
Title |
---|
Downloaded from <https://www.tga.gov.au/media-release/information-regarding-tests-have-been-conducted-silicone-gel-filled-breast-implants-manufactured-poly-implant-prothese-pip> on 11/11/2016. Online publication date of 12 Jan. 2012. * |
Therapeutic Goods Administration. "Information regarding tests that have been conducted on silicone gel filled breast implants manufactured by Poly-Implant Prothese (PIP)". (See continuation in V)... * |
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US10765501B2 (en) | 2008-08-13 | 2020-09-08 | Allergan, Inc. | Dual plane breast implant |
US10898607B2 (en) | 2009-03-27 | 2021-01-26 | Allergan, Inc. | Bioerodible matrix for tissue involvement |
US11202853B2 (en) | 2010-05-11 | 2021-12-21 | Allergan, Inc. | Porogen compositions, methods of making and uses |
US10864661B2 (en) | 2012-12-13 | 2020-12-15 | Allergan, Inc. | Device and method for making a variable surface breast implant |
WO2017137853A2 (en) | 2016-02-09 | 2017-08-17 | Establishment Labs S.A. | Transponders and sensors for implantable medical devices and methods of use thereof |
EP3556317A1 (en) | 2016-02-09 | 2019-10-23 | Establishment Labs S.A. | Transponders and sensors for implantable medical devices and methods of use thereof |
WO2017196973A2 (en) | 2016-05-11 | 2017-11-16 | Establishment Labs S.A. | Medical implants and methods of preparation thereof |
US20210346150A1 (en) * | 2016-05-11 | 2021-11-11 | Establishment Labs S.A. | Medical implants and methods of preparation thereof |
US11857409B2 (en) * | 2016-05-11 | 2024-01-02 | Establishment Labs Holdings, Inc. | Medical implants and methods of preparation thereof |
WO2019246559A1 (en) | 2018-06-22 | 2019-12-26 | Establishment Labs S.A. | Systems and methods for simulation and modeling of combined augmentation procedures |
CN112689485A (en) * | 2018-07-25 | 2021-04-20 | 制定实验室公司 | Implant with symmetrical shape |
US20210259823A1 (en) * | 2018-07-25 | 2021-08-26 | Establishment Labs S.A. | Implants with symmetric shape |
Also Published As
Publication number | Publication date |
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US20210361410A1 (en) | 2021-11-25 |
US11109956B2 (en) | 2021-09-07 |
US20190167414A1 (en) | 2019-06-06 |
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