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WO2000053129A1 - Prothese mammaire partiel autoformante pourvue d'un catalyseur - Google Patents

Prothese mammaire partiel autoformante pourvue d'un catalyseur Download PDF

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Publication number
WO2000053129A1
WO2000053129A1 PCT/US2000/006395 US0006395W WO0053129A1 WO 2000053129 A1 WO2000053129 A1 WO 2000053129A1 US 0006395 W US0006395 W US 0006395W WO 0053129 A1 WO0053129 A1 WO 0053129A1
Authority
WO
WIPO (PCT)
Prior art keywords
prosthetic device
bag
precursor
capsule
self
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2000/006395
Other languages
English (en)
Inventor
Louis F. Malice, Jr.
Robert J. Halley
Donna Mines
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Coloplast Corp
Original Assignee
Coloplast Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/267,319 external-priority patent/US6162250A/en
Application filed by Coloplast Corp filed Critical Coloplast Corp
Priority to AU38764/00A priority Critical patent/AU3876400A/en
Publication of WO2000053129A1 publication Critical patent/WO2000053129A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2/52—Mammary prostheses
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/12—Polysiloxanes containing silicon bound to hydrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups

Definitions

  • the present invention is directed to a self-forming prosthetic device.
  • the present invention is further directed to a method of making the self-forming prosthetic device.
  • Prosthetic devices are utilized in a variety of applications today.
  • Breast prosthetics are a common type of prosthetic device.
  • Other types of prosthetic devices include stump pads, shoe inserts, and the like.
  • a variety of prosthetic devices have been developed to provide comfort to a patient. These prosthetic devices comprise specific materials and have a specific shape in order to provide a desired feel and comfort level to the patient.
  • stump pads and shoe inserts which have a desired shape, feel and comfort for patients.
  • mastectomies In the event of breast cancer, surgeons often perform mastectomies in order to remove all or part of the cancerous breast. In recent years, surgeons have increasingly utilized partial mastectomies, such as lumpectomies and quadrectomies, when they are sufficient to remove the cancerous tissue from the breast.
  • patients can choose from a wide variety of prosthetic devices in order to provide a symmetrical appearance under clothing.
  • Patients who undergo partial mastectomies are presently able to choose a partial prosthesis.
  • partial breast prostheses are offered in a few different shapes, with each shape being available in a few different sizes. The patient must select an off-the-shelf partial prosthesis having a shape and size that provides the patient with the most symmetry under clothing.
  • the off-the-shelf partial prosthesis have shapes and sizes, which do not provide a good fit with the remaining portion of the patient's breast. Moreover, occasionally, because of scars or tissue wounds, even patients with full mastectomies can not find prostheses that provide a good fit. Therefore, there exists a need in the art for a prosthetic device that can be custom tailored to the size and shape of the patient's breast.
  • the present invention provides a self-forming prosthetic device, which conforms to a portion of a patient's body, such as a chest wall, a partial breast, a partial leg, a partial foot, or any other part of the body.
  • the prosthetic device is formed from a prosthetic device precursor, which includes at least two separate compartments A and B, wherein compartment A contains a curable material and compartment B contains at least one of a catalyst and a cross-linking agent.
  • the prosthetic device precursor is formed such that one of compartments A and B comprises a bag, and the other of compartments A and B comprises a capsule within the bag.
  • the prosthetic device precursor is formed such that compartments A and B are separate chambers within a bag, separated from one another by an interior film.
  • the catalyst or cross-linking agent is mixed with the curable material.
  • the prosthetic device precursor is then placed next to a patient's body, such as in the patient's bra, and cures to form a prosthetic device in the shape of the "mold" formed by the patient's chest wall or breast, and bra.
  • the present invention is further directed to a method of making a prosthetic device precursor and a self-forming prosthetic device.
  • the method of manufacture enables the production of a prosthetic device, which conforms specifically to a given patient's body or any other desired shape.
  • the present invention is also directed to a variety of uses for the self-forming prosthetic device.
  • the various aspects of the present invention may be more clearly understood and appreciated from a review of the following detailed description of the disclosed embodiments.
  • FIG. 1 depicts a rear view of a bra of the present invention.
  • FIG. 2 depicts a vertical cross-section of a molded outer cup of a bra of the present invention along line 100 of Fig. 1.
  • the present invention provides a self-forming article of manufacture, which is simple to use and quickly conforms to its surroundings.
  • the present invention is further directed to a method of making a self-forming article of manufacture and the multiple uses for the resulting article.
  • the self-forming article of manufacture may be used in any application that requires a molded object having a desired degree of softness and conformability. Suitable uses include, but are not limited to, using the self-forming article of manufacture as a prosthetic device, stump pad, shoe insert, or other molded object.
  • a particular suitable application for the self-forming article of manufacture is in the area of breast prosthesis.
  • the self-forming article of manufacture is referred to as a self-forming prosthetic device made from a prosthetic device precursor.
  • the self-forming article of manufacture has many uses other than as a prosthetic device.
  • the seff-forming article of manufacture is a prosthetic device that conforms to a patient's body (hereinafter referred to as "a self-forming prosthetic device").
  • the self-forming prosthetic device is suitable for use with any portion of a patient's body, including, but not limited to, the patient's chest wall, breast, leg, and foot.
  • the self-forming prosthetic device of the present invention allows a patient to choose an uncured, conformable prosthetic device precursor, which may be easily transformed into a cured, prosthetic device having a shape, which conforms to the patient's body and provides comfort and satisfaction to the patient.
  • the self-forming prosthetic device of the present invention is formed from a prosthetic device precursor.
  • the prosthetic device precursor comprising at least two separate compartments A and B, wherein compartment A contains a curable material and compartment B contains at least one of a catalyst and a cross- linking agent.
  • the prosthetic device precursor comprises compartments A and B, wherein one of compartments A and B comprises a bag, and the other of compartments A and B comprises a capsule within the bag.
  • a bag is filled with a curable material, a capsule within the bag, and one or more materials within the capsule.
  • the one or more materials within the capsule may include materials such as catalysts, cross-linking agents, and pigments as described below.
  • the bag may be formed from a thin film material having a desired appearance and texture.
  • the bag may comprise a variety of materials including, but not limited to, thermoplastic film- forming materials such as polyurethane, polyethylene, polypropylene, and polyester. Other suitable materials include castable or curable film-fomiing materials such as polyurethanes, silicones, and castable rubbers.
  • the bag material comprises one or more layers of a thin polyurethane film.
  • the edges of the bag are sealed to form a shape having a desired volume.
  • the film material used to form the bag desirably has a film thickness of up to about 5 mil. In one embodiment of the present invention, the film material has a film thickness of from about 1 mil to about 3 mil.
  • the bag may be made as described above, it should be noted that the bag may be made by any other method known to those of ordinary skill in the art. Suitable alternative methods for forming the bag include, but are not limited to, blow molding, dip coating of male molds, and spray coating of female molds. Further, it should be noted that the film of the bag may be modified as desired prior to or after bag formation. The appearance and texture of the film may also be modified after the bag is filled with curable material as described below. Suitable film treatments include, but are not limited to, thermoforming, laminating, embossing, texturing, pigmenting, or any other process, which gives the film a more realistic, comfortable, or attractive appearance and feel.
  • the film is thermoformed into a desired three-dimensional shape prior to forming the bag.
  • the film may be thermoformed, pigmented, and/or laminated to form a nipple for the final breast prosthesis.
  • a film embossed with a skin-like texture is used to make the bag.
  • a non-woven polyurethane material is laminated to the outside of the bag to create a more pleasing texture.
  • Other modifications to the bag include, but are not limited to, the incorporation of a valve into the bag. The valve enables the injection or removal of curable material from the bag to adjust the volume of the prosthetic device precursor.
  • valve may be used to inject one or more other materials into the bag, such as a catalyst or cross-linking agent to initiate or adjust the cure of the curable material within the bag.
  • a catalyst or cross-linking agent such as a catalyst or cross-linking agent to initiate or adjust the cure of the curable material within the bag.
  • Any valve may be used in the present invention as long as the valve is attachable to the bag and functions as desired.
  • the valve comprises a septum device, a ball cone check valve, or simply a tube extension of the bag that is heat sealed after injection of the curable material.
  • the bag is filled with an uncured material, which may be cured to form a hardened material having a desired amount of softness and texture.
  • Suitable curable materials include, but are not limited to, silicone gels and silicone gel systems, which cure at room temperature with the aid of at least one catalyst or cross-linking agent. The choice of a particular curable material may be made by one of ordinary skill in the art given a patient's particular needs (i.e., degree of softness, etc.). Suitable curable materials are well known in the art of making prosthetic devices, and any one may be used in the present invention. Suitable curable materials are disclosed in numerous publications including, but not limited to, U.S. Patents Nos. 5,534,609 and 5,741,877, both of which are incorporated by reference.
  • the curable material comprises a polydimethylsiloxane (CAS Reg. No. 63148-
  • a vinyldimethylsiloxy terminated polydimethylsiloxane (CAS Reg. No. 68951-99-5), a methylhydrosiloxane-dimethylsiloxane copolymer (CAS Reg. No. 68037-59-2), a hydride terminated polydimethylsiloxane, or a combination thereof.
  • other materials may be combined with the curable material.
  • Other additives include, but are not limited to, silicone oil, colorants, viscosity modifiers, cure inhibitors, cure accelerators, and fillers.
  • the capsule may be formed from any material, which provides a temporary enclosure for one or more encapsulated materials. Suitable materials for forming the capsule include, but are not limited to, polyethylene film, vinylidene chloride-containing copolymers, polyvinylidene chloride film, polyester film, polyvinyl chloride film, and polyurethane film. Desirably, the capsule is formed from a polyethylene film, available from Larsen Packaging (Fairmont, MN) or a SARANTM film, available from Dow Chemical
  • a capsule is formed from polyethylene film by forming an envelope from one or more sheets of polyethylene film and heat sealing the edges of the film with pressure. It should be noted that the edges of the capsule may be sealed by any other method known to those of ordinary skill in the art. Suitable methods for sealing the edges of the capsule include, but are not limited to, adhesively sealing the edges of the capsule.
  • the capsule may be a component separate from the above- described bag, or may be an integral part of the bag.
  • the capsule may be represented as one chamber of a multi-chamber bag.
  • the prosthetic device precursor comprises a multi- chamber bag, having compartments A and B, which are separated from one another by an interior film.
  • the curing material may be injected into its chamber (compartment A or B) through a first fill port.
  • the catalyst or cross-linking agent may be injected into its chamber (compartment B or A) through a second fill port. Once the fill ports are sealed, the self-forming precursor may be squeezed to break the film separating the two chambers.
  • the film separating the two chambers may be made weaker (i.e., have a lower burst strength) than the outer film material of the bag.
  • the thickness of the film separating the two chambers may (1) have a thickness less than the remaining film of the bag and/or (2) be formed from a different material, having a lower burst strength than the film material of the bag.
  • a removable plug or a valve may be present in the wall of the film separating the two chambers. In any case, once the film separating the two chambers is broken, the prosthetic device precursor material is kneaded, and cures into a desired shape.
  • One or more encapsulated materials may be present in one or more compartments of the prosthetic device precursor.
  • a catalyst material is enclosed within the capsule or placed within a chamber of the bag.
  • the catalyst material may be any catalyst material, which initiates the curing process of the curable material.
  • Suitable catalyst materials include, but are not limited to, platinum-containing catalysts. Suitable platinum-containing catalysts are disclosed in numerous publications including, but not limited to, U.S. Patents Nos. 5,534,609 and 5,741,877, both of which are incorporated by reference.
  • the catalyst material comprises a platinum- silicone complex.
  • platinum-silicone complex is used to describe a silicone-complexed-platinum species dissolved in silicone oil.
  • Such catalysts are available from a number of sources including, but not limited to, Catalyst PTS C OL (Wacker-Chemie GmbH; Germany), and Catalyst PC085 (United Chemical Technologies).
  • the amount of catalyst may vary depending upon the desired rate of cure and the curable material. Desirably, the amount of catalyst is up to about 3 wt% based on the total weight of catalyst and curable material. In one embodiment of the present invention, the amount of catalyst is from about 0.5 wt% to about 1.0 wt% based on the total weight of catalyst and curable material.
  • one or more additional materials may be combined and encapsulated along with the catalyst. Suitable additional materials include, but are not limited to, the above-mentioned additives.
  • a cross- linking agent is enclosed within the capsule or placed within a chamber of the bag.
  • the catalyst may be in the capsule or chamber along with the cross-linking agent or may be incorporated into the curable material within the sealed bag.
  • the cross-linking agent may be any cross-Unking agent, which enables cross-linking of the curable material within the bag.
  • Suitable cross- linking materials include, but are not limited to, hydride terminated polysiloxanes and hydride-containing polysiloxanes. Suitable cross-
  • Unking materials are disclosed in numerous pubUcations including, but not limited to, U.S. Patents Nos. 5,534,609 and 5,741,877, both of which are incorporated by reference.
  • the cross-Unking material comprises hydride terminated polysiloxanes or hydride- containing polysiloxanes available from United Chemical
  • cross-Unking materials having a hydride content of from about 0.5 to about 10.0 mmol/g of cross-linking material are particularly suitable for the present invention.
  • the amount of cross-linking material may vary depending upon the desired rate of cross-linking and the curable material. Desirably, the amount of cross-linking material is up to about 10 wt% based on the total weight of the curable composition, which includes any catalyst, cross-linking material, curable material, and additives. In one embodiment of the present invention, the amount of cross-Unking material is from about 0.5 wt% to about
  • a prosthetic device precursor and a self-forming prosthetic device are formed from an outer bag of polyurethane and a curable silicone mixture comprising one or more polydimethylsiloxanes (CAS Reg. No.
  • the polydimethylsiloxane has a viscosity of from about 100 cSt to about 10,000 cSt. More desirably, the polydimethylsiloxane has a viscosity of from about 100 cSt to about 1,000 cSt.
  • the vinyldimethylsiloxy terminated polydimethylsiloxane has a viscosity of from about 1,000 cSt to about 165,000 cSt
  • the methylhydrosiloxane- dimethylsiloxane copolymer has a viscosity of from about 5 cSt to about 1,000 cSt and a hydride content of from about 0.5 to about 5.0 mmol/g.
  • the present invention is further directed to a process of forming an article of manufacture.
  • the process may be used to form a variety of custom molded articles having a desired size, color, and softness, while providing substantially complete conformity to a desired surface, such as a patient's body.
  • a precursor to the article of manufacture is produced as described above, wherein the precursor comprises at least two separate compartments A and B, wherein compartment A contains a curable material and compartment B contains at least one of a catalyst and a cross-linking agent.
  • the prosthetic device precursor may comprise a bag (compartment A) and a capsule (compartment B) within the bag, or the prosthetic device precursor may comprise a multi- chamber bag, wherein compartments A and B are separate chambers within the bag, separated from one another by an interior film.
  • the capsule or interior film within the bag is broken so that the contents of compartments A and B may be mteraiixed.
  • the resulting mixture is mixed for about 5 to 10 minutes by kneading the precursor.
  • the precursor is then placed in a mold or other three-dimensional space, such as within a bra next to a patient's body in the case of a breast prosthesis.
  • the precursor is allowed to cure for about 15 minutes.
  • the resulting prosthesis conforms to the mold or three-dimensional space, such as a patient's existing body profile.
  • attachment systems such as hook-and-loop fasteners
  • Suitable attachment systems include, but are not limited to, those disclosed in U.S. Patents Nos. 5,071,433 to Naestoft et al. and 5,352,307 to Wild, both of which are incorporated by reference in their entirety.
  • the prosthetic device of the present invention may be prepared in a variety of ways.
  • two layers of polyurethane film are heat sealed together to form an oval bag with an inlet port on one end of the oval bag.
  • a small capsule containing a platinum catalyst in silicone oil is placed into the bag through the inlet port.
  • a mixture of siUcone curable materials is injected into the bag. The mixture is formulated to cure at room temperature when mixed with the platinum catalyst. Entrapped air is removed from the bag, and the inlet is heat sealed.
  • a patient is fitted with the prosthetic device precursor, which has the proper size and shape to match the patient's needs.
  • the capsule of catalyst is broken open and the bag is kneaded for approximately 5-10 minutes in order to thoroughly mix the catalyst into the curable siUcone mixture.
  • the bag is then placed in a desired three- dimensional space, such as in a patient's bra in the position in which the prosthetic device wiU be worn. After approximately 15 minutes, the Uquid cures into a silicone gel, which conforms to the desired three-dimensional space. It should be noted that mix time and cure time may vary depending on the curable material used, the catalyst, the size of the prosthetic device, and other factors.
  • the prosthetic device of the present invention may be prepared as follows. Two layers of polyurethane film are heat sealed together to form an oval bag with an inlet port on one end of the oval bag. A small capsule containing a cross-linking material is placed into the bag through the inlet port. A mixture of curable materials and catalyst is injected into the bag. The mixture is formulated to cross-link at room temperature when mixed with the cross-linking material. Entrapped air is removed from the bag, and the inlet is heat sealed. A patient is fitted with the prosthetic device precursor, which has the proper size and shape to match the patient's needs.
  • the capsule of cross-linking material is broken open and the bag is kneaded for approximately 5-10 minutes in order to thoroughly mix the cross-linking material into the curable siUcone mixture.
  • the bag is then placed in a desired three- dimensional space, such as within a patient's shoe in the position in which the prosthetic device will be worn. After approximately 15 minutes, the Uquid cures into a silicone gel, which conforms to the desired three-dimensional space.
  • mix time and cure time may vary depending on the curable material used, the cross-linking material, the size of the prosthetic device, and other factors.
  • a multi- layer prosthetic device may be formed, wherein at least one layer of the multi-layer prosthetic device comprises the self-forming prosthetic device of the present invention.
  • a multi-layer prosthetic device is a two-layer prosthetic device, wherein the front or outermost layer of the prosthetic device comprises a first pre-cured prosthetic device and the back or body- side layer comprises the self-fo ⁇ riing prosthetic device of the present invention.
  • the pre-cured prosthetic device layer may provide a preformed shape or other attribute to the resulting prosthetic device, while the self-forming layer provides a desired feel and comfort level for a patient.
  • a two-layer prosthetic device may be used as a breast prosthesis, wherein the pre-cured prosthetic device layer comprises breast components such as a nipple, while the self-forming portion provides conformability and comfort to the wearer's chest.
  • the self-forming prosthetic device may be used as a partial or fuU breast prosthesis.
  • the self-forming prosthetic device conforms to a specific wearer's chest waH and/or partial breast, a portion of which having been removed during a partial mastectomy procedure.
  • the self-forming breast prosthesis may be used with any commercially available bra.
  • the self-forming breast prosthesis may be used with a new bra as described below and shown in Figures 1 and 2.
  • the new bra may be a soft-cup and/or underwire bra with a molded foam inner cup and means for attaching a prosthetic device, such as the above-described self-forming breast prosthesis, to an inner surface of the cup.
  • Suitable attachment means may include, but are not limited to, hook-and-loop fasteners, adhesives, and snaps.
  • the attachment means comprises a loop lining on an inner surface of the cup and a hook material on the prosthetic device.
  • Suitable loop linings include, but are not limited to, Perma Loop and Brushed Tricot, both of which are 100% polyester fabrics available from Gehring Textiles (New York, NY).
  • the new bra may comprise one or more of the following main components: a molded cup 11; a center band 12; a back power net 13; and a strap extension 14 for a cushion shoulder strap.
  • the molded cup 11 of the new bra is desirably a three ply material as shown in Fig. 2.
  • the three ply material of molded cup 11 may comprise an outer cup layer 21, a middle cup layer 22, and an inner cup layer 23.
  • the outer cup layer 21 may comprise any moldable fabric, which can be used in the production of bras. Suitable moldable fabrics include, but are not limited to, 100% polyester fabric sold as Simplex No. KTS516, available from McMurray Fabrics (Aberdeen, NC).
  • the middle cup layer 22 may comprise any moldable foam material, which can be used in the production of bras. Suitable moldable foam materials include, but are not limited to, 100% polyurethane foam materials available from Moldworks, Inc. (Linden, NJ).
  • the inner cup layer 23 may comprise any attachment means described above. Desirably, the inner cup layer 23 comprises a loop material, and the loop material is laminated to a middle cup layer 23 in the form of a foam material.
  • the pUes of the molded cup are desirably "over-edged” and then attached, by sewing, to strap extension 14.
  • a center band 12 and back power net 13 may be attached to the molded cup with "bias binding" 15 for a smooth and comfortable finish.
  • the new bra provides a mean for attaching a prosthetic device to the bra, as weU as, provides support during the shaping process in the self- forming embodiment described above.
  • the new bra provides a more symmetrical appearance when worn with a prosthetic device, than obtained from the prosthetic device alone.
  • a self-forming prosthetic device was formed using the following procedure.
  • a bag was formed by heat sealing two sheets of polyurethane film having a thickness of 2.5 mil. at a temperature of about 385°F and a pressure of about 25 bar for about 2 seconds.
  • a curable material was formed by mixing the foUowing components:
  • Polydimethylsiloxane having a viscosity of 100 cSt 350 g
  • Methylhydrosiloxane-dimethylsiloxane copolymer having a viscosity of 45 cSt, hydride content of 1.7 mrnol/g 4g The curable composition was mixed and degassed.
  • a catalyst mixture was formed using the foUowing components:
  • the catalyst mixture was sealed in a small capsule having dimensions of about 1/4" diameter and 1" length.
  • the capsule was formed by folding a low molecular weight polyethylene film, PARAFILMTM (available from Van Waters & Rogers), into an envelope and heat sealing the edges of the envelope under pressure.
  • PARAFILMTM available from Van Waters & Rogers
  • the capsule and about 125 g of the curable composition were inserted into the bag through a fill port.
  • the fill port was heat sealed to form a prosthetic device precursor.
  • the precursor was squeezed to break the capsule.
  • the contents of the precursor were kneaded for about 5 to 10 minutes.
  • the precursor was placed in a cradle and allowed to cure for about 15 minutes.
  • the self-forming prosthetic device conformed to the shape of the cradle.
  • a self-forming prosthetic device was formed using the following procedure.
  • a bag was formed by heat sealing two sheets of polyurethane film having a thickness of 2.5 mil. at a temperature of about 385°F and a pressure of about 25 bar for about 2 seconds.
  • a curable material was formed by mixing the foUowing components:
  • the curable composition was mixed and degassed.
  • a cross-linker mixture was formed using the foUowing components:
  • Methylhydrosiloxane-dimethylsiloxane copolymer having a viscosity of 45 cSt, hydride content of 1.7 mmol/g 29.2g
  • a small capsule having dimensions of about 1/4 inch diameter and 1 to 1.5 inch length was prepared using two sheets of Saran film (available from Dow Chemicals).
  • the capsule was formed by heat sealing three sides of the sheets using an impulse sealer from American International Electric.
  • About 1.4 g of the cross-Unker mixture was placed in the capsule. Air was removed from the capsule and the fourth side was heat sealed.
  • the bag was placed in a mold.
  • the capsule and about 150 g of the curable composition were inserted into the bag through a fill port.
  • the mold was heated at approximately 120°C for about 30 minutes to thermally form the precursor bag into a desired shape and to seal the fill port.
  • the bag was removed from the mold and trimmed to make the self-forming prosthetic device precursor.
  • the capsule inside the precursor was squeezed to burst the capsule.
  • the contents of the capsule were then forced into the curable composition (i.e., similar to emptying a tube of toothpaste).
  • the precursor was kneaded for about 5 to 10 minutes and then placed in a cradle.
  • the precursor was allowed to cure for about 15 minutes.
  • the self-forming prosthetic device conformed to the shape of the cradle.
  • a self-forming prosthetic device was formed using the following procedure.
  • a bag was formed by heat sealing two sheets at a temperature of about 385°F and a pressure of about 25 bar for about 2 seconds.
  • One sheet of film was a polyurethane film having a thickness of 2.5 mil.
  • the other sheet of film was a polyurethane film having a thickness of 2.5 mU and embossed with a skin-like texture.
  • a curable material was formed by mixing the foUowing components:
  • Methylhydrosiloxane-dimethylsiloxane copolymer having a viscosity of 45 cSt, hydride content of 1.7 mmol/g 6.77 g
  • the curable composition was mixed and degassed.
  • a catalyst mixture was formed using the foUowing components:
  • Polydimethylsiloxane having a viscosity of 100 cSt 45.0 g
  • a small capsule having dimensions of about 1/4 inch diameter and 1 to 1.5 inch length was prepared using two sheets of Saran film (available from Dow Chemicals). The capsule was formed by heat sealing three sides of the sheets using an impulse sealer from American International Electric. About 0.35 g of the catalyst mixture was placed in the capsule. Air was removed from the capsule and the fourth side was heat sealed.
  • the capsule and about 100 g of the curable composition were inserted into the bag through a fill port.
  • the fill port was then sealed using the impulse sealer from American International
  • the bag was trimmed to make the self-forming prosthetic device precursor.
  • the capsule inside the precursor was squeezed to burst the capsule.
  • the contents of the capsule were then forced into the curable composition (i.e., simUar to emptying a tube of toothpaste).
  • the precursor was kneaded for about 5 to 10 minutes and then placed in a cradle.
  • the precursor was allowed to cure for about 15 minutes.
  • the self-forming prosthetic device conformed to the shape of the cradle.
  • EXAMPLE 4 Formation of a Self-Forming Prosthetic Device Having an Textured Film Surface
  • a self-forming prosthetic device was formed using the following procedure.
  • a bag was formed by heat sealing three sheets at a temperature of about 385°F and a pressure of about 25 bar for about 2 seconds.
  • Two sheets of film were polyurethane film having a thickness of 2.5 mU.
  • the third sheet of film, used as an outer layer, was a non-woven polyurethane material (9905 WB elastic non-woven) available from 3M, St. Paul, MN.
  • a curable material was formed by mixing the foUowing components:
  • Polydimethylsiloxane having a viscosity of 100 cSt 750 g
  • the curable composition was mixed and degassed.
  • a catalyst mixture was formed using the foUowing components:
  • Polydimethylsiloxane having a viscosity of 100 cSt 45.0 g
  • a small capsule having dimensions of about 1/4 inch diameter and 1 to 1.5 inch length was prepared using two sheets of Saran film (available from Dow Chemicals).
  • the capsule was formed by heat sealing three sides of the sheets using an impulse sealer from American International Electric.
  • About 0.45 g of the catalyst mixture was placed in the capsule. Air was removed from the capsule and the fourth side was heat sealed.
  • About 125 g of the curable composition were inserted into the bag between the two layers of polyurethane film through a fill port.
  • the precursor was positioned in a mold so that the fill port would not be sealed and the curable composition would not leak out.
  • the mold was heated at approximately 250°C for about 30 minutes to thermally form the precursor bag into a desired shape and to heat seal the non-woven layer to the adjacent polyurethane layer.
  • the capsule was then placed in the precursor bag through the fill port.
  • the fill port was then sealed using the impulse sealer from American International Electric.
  • the bag was trimmed to make the self-forming prosthetic device precursor.
  • a self-forming prosthetic device was formed using the following procedure.
  • a bag was formed by heat sealing two sheets of polyurethane film having a thickness of 2.5 mU. at a temperature of about 385°F and a pressure of about 25 bar for about 2 seconds.
  • a curable material was formed by mixing the foUowing components:
  • Polydimethylsiloxane having a viscosity of 100 cSt 750.0 g
  • the curable composition was mixed and degassed.
  • a cross-linker mixture was formed using the foUowing components:
  • MethylhydrosUoxane-dimethylsiloxane copolymer having a viscosity of 45 cSt, hydride content of 1.7 mmol/g 68.7 g
  • a small capsule having dimensions of about 1/4 inch diameter and 1 to 1.5 inch length was prepared using two sheets of Saran film (ava able from Dow Chemicals). The capsule was formed by heat sealing three sides of the sheets using an impulse sealer from
  • the capsule and about 100 g of the curable composition were inserted into the bag through a fiU port.
  • the fill port was then sealed using the impulse sealer from American International
  • the bag was trimmed to make the self-forming prosthetic device precursor.
  • the capsule inside the precursor was squeezed to burst the capsule.
  • the contents of the capsule were then forced into the curable composition (i.e., simUar to emptying a tube of toothpaste).
  • the precursor was kneaded for about 5 to 10 minutes and then placed in a cradle.
  • the precursor was allowed to cure for about 15 minutes.
  • the self-forming prosthetic device conformed to the shape of the cradle.
  • EXAMPLE 6 Formation of a Self-Forming Prosthetic Device Having Hook Material Attached Thereto
  • a self-forming prosthetic device was formed using the following procedure.
  • a bag was formed by heat sealing two sheets of polyurethane film having a thickness of 2.5 mil. at a temperature of about 385°F and a pressure of about 25 bar for about 2 seconds.
  • a curable material was formed by mixing the foUowing components:
  • Polydimethylsiloxane having a viscosity of 100 cSt 750.0 g
  • the curable composition was mixed and degassed.
  • a cross-Unker mixture was formed using the foUowing components:
  • Methylhydrosiloxane-dimethylsiloxane copolymer having a viscosity of 45 cSt, hydride content of 1.7 mmol/g 68.7 g
  • Harwick Pigment 83SP01 (available from Harwick Chemical Company) 8.1 g
  • a small capsule having dimensions of about 1/4 inch diameter and 1 to 1.5 inch length was prepared using two sheets of Saran film (available from Dow Chemicals). The capsule was formed by heat sealing three sides of the sheets using an impulse sealer from Dow Chemicals.
  • the bag was positioned in a mold so that the fill port was accessible and curable composition placed in the bag would not leak from the bag.
  • the capsule and about 100 g of the curable composition were inserted into the bag through the fill port.
  • a piece of hook material i.e., VELCROTM
  • the back of the hook material was coated with a heat seal polyurethane adhesive.
  • the mold was heated at approximately 120°C for about 30 minutes to thermally form the precursor bag into a desired shape, attach the hook material to the bag, and to heat seal the fill port. After the mold cooled, the bag was removed. The bag was trimmed to make the self-forming prosthetic device precursor.
  • the capsule inside the precursor was squeezed to burst the capsule.
  • the contents of the capsule were then forced into the curable composition (i.e., similar to emptying a tube of toothpaste).
  • the precursor was kneaded for about 5 to 10 minutes and then placed in a cradle.
  • the precursor was allowed to cure for about 15 minutes.
  • the self-forming prosthetic device conformed to the shape of the cradle.
  • a self-forming prosthetic device was formed using the following procedure.
  • a bag was formed by heat sealing two sheets of polyurethane film having a thickness of 2.5 mU. at a temperature of about 385°F and a pressure of about 25 bar for about 2 seconds.
  • a curable material was formed by mixing the foUowing components:
  • PolydimethylsUoxane having a viscosity of 100 cSt 74.4 g
  • Vinyldimethylsiloxy terminated polydimethylsiloxane having a viscosity of 2,000 cSt 19.8 g
  • Methylhydrosiloxane-dimethylsiloxane copolymer having a viscosity of 45 cSt, hydride content of 1.7 mmol/g 0.6 g
  • Filler material polyacrylonitrile microspheres having an average particle size of 60-90 micrometers and a density of about 30 kg/m 3 ) 4.0 g
  • the curable composition was mixed and degassed.
  • a catalyst mixture was formed using the foUowing components:
  • Harwick Pigment 83SP01 (available from Harwick Chemical Company) 16.0 g
  • a small capsule having dimensions of about 1/4 inch diameter and 1 to 1.5 inch length was prepared using two sheets of Saran film (available from Dow Chemicals).
  • the capsule was formed by heat seaUng three sides of the sheets using an impulse sealer from American International Electric.
  • About 0.5 g of the catalyst mixture was placed in the capsule. Air was removed from the capsule and the fourth side was heat sealed.
  • the capsule and about 48 g of the curable composition were inserted into the bag through a fill port.
  • the fill port was sealed using an impulse sealer from American International Electric.
  • Excess film of the bag was trimmed to make the self-forming prosthetic device precursor.
  • the capsule inside the precursor was squeezed to burst the capsule.
  • the contents of the capsule were then forced into the curable composition (i.e., similar to emptying a tube of toothpaste).
  • the precursor was kneaded for about 5 to 10 minutes and then placed in a cradle.
  • the precursor was allowed to cure for about 15 minutes.
  • the self-forming prosthetic device conforme
  • the resulting prosthetic device was lightweight compared to other prosthetic devices made without the filler material.
  • the pigment material may be added to the curable material as opposed to the capsule material as shown in Example 5.
  • attachments may be attached to the precursor bag using the same method as described in Example 6.

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Transplantation (AREA)
  • Veterinary Medicine (AREA)
  • Cardiology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Prostheses (AREA)

Abstract

L'invention concerne une prothèse autoformante, un procédé de fabrication de ladite prothèse autoformante ainsi qu'un soutien-gorge (100) destiné à être utilisé avec une prothèse sous la forme d'une prothèse mammaire.
PCT/US2000/006395 1999-03-12 2000-03-13 Prothese mammaire partiel autoformante pourvue d'un catalyseur Ceased WO2000053129A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU38764/00A AU3876400A (en) 1999-03-12 2000-03-13 Self-forming partial breast prosthesis with catalyst

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/267,319 US6162250A (en) 1998-03-12 1999-03-12 Self-forming partial breast prosthesis with encapsulated catalyst and a method of making the same
PCT/US1999/005512 WO1999045862A1 (fr) 1998-03-12 1999-03-12 Prothese mammaire partielle auto-façonnable
USPCT/US99/05512 1999-03-12
US09/267,319 1999-03-12

Publications (1)

Publication Number Publication Date
WO2000053129A1 true WO2000053129A1 (fr) 2000-09-14

Family

ID=26795476

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/006395 Ceased WO2000053129A1 (fr) 1999-03-12 2000-03-13 Prothese mammaire partiel autoformante pourvue d'un catalyseur

Country Status (2)

Country Link
AU (1) AU3876400A (fr)
WO (1) WO2000053129A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008060087A1 (de) 2008-12-02 2010-06-17 Amoena Medizin-Orthopädie-Technik GmbH Brustprothese

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5258036A (en) * 1992-01-15 1993-11-02 Carapace, Inc. Body part mold and method of making
US5658329A (en) * 1995-02-14 1997-08-19 Mentor Corporation Filling material for soft tissue implant prostheses and implants made therewith
US5713960A (en) * 1991-07-06 1998-02-03 Christensen; James Marlow Prosthesis with improved biocompatibility made with N-vinyl polymers
US5738812A (en) * 1994-04-15 1998-04-14 Amoena Medizin-Orthopadie-Technik Gmbh Process for the manufacture of breast prostheses
US5741877A (en) * 1995-02-21 1998-04-21 Tiffany; John S. Silicone pseudogel
US5824075A (en) * 1994-06-23 1998-10-20 Thielbar; Janice Marie Custom formed natural fit artificial breast appliance
US5888231A (en) * 1997-10-08 1999-03-30 Minnesota Mining And Manufacturing Company Custom-molded liner for artificial limb socket
US5902335A (en) * 1997-10-01 1999-05-11 Capital Marketing Technologies, Inc. Multiple section breast prosthesis
US5941909A (en) * 1995-02-14 1999-08-24 Mentor Corporation Filling material for soft tissue implant prostheses and implants made therewith

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5713960A (en) * 1991-07-06 1998-02-03 Christensen; James Marlow Prosthesis with improved biocompatibility made with N-vinyl polymers
US5258036A (en) * 1992-01-15 1993-11-02 Carapace, Inc. Body part mold and method of making
US5738812A (en) * 1994-04-15 1998-04-14 Amoena Medizin-Orthopadie-Technik Gmbh Process for the manufacture of breast prostheses
US5824075A (en) * 1994-06-23 1998-10-20 Thielbar; Janice Marie Custom formed natural fit artificial breast appliance
US5658329A (en) * 1995-02-14 1997-08-19 Mentor Corporation Filling material for soft tissue implant prostheses and implants made therewith
US5941909A (en) * 1995-02-14 1999-08-24 Mentor Corporation Filling material for soft tissue implant prostheses and implants made therewith
US5741877A (en) * 1995-02-21 1998-04-21 Tiffany; John S. Silicone pseudogel
US5902335A (en) * 1997-10-01 1999-05-11 Capital Marketing Technologies, Inc. Multiple section breast prosthesis
US5888231A (en) * 1997-10-08 1999-03-30 Minnesota Mining And Manufacturing Company Custom-molded liner for artificial limb socket

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008060087A1 (de) 2008-12-02 2010-06-17 Amoena Medizin-Orthopädie-Technik GmbH Brustprothese

Also Published As

Publication number Publication date
AU3876400A (en) 2000-09-28

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