US3665520A - Surgically implantable breast prosthesis - Google Patents
Surgically implantable breast prosthesis Download PDFInfo
- Publication number
- US3665520A US3665520A US78863A US3665520DA US3665520A US 3665520 A US3665520 A US 3665520A US 78863 A US78863 A US 78863A US 3665520D A US3665520D A US 3665520DA US 3665520 A US3665520 A US 3665520A
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- United States
- Prior art keywords
- container
- back wall
- prosthesis
- wall
- prolongation
- 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.)
- Expired - Lifetime
Links
- 210000000481 breast Anatomy 0.000 title claims abstract description 32
- 239000004744 fabric Substances 0.000 claims abstract description 22
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 11
- 210000000779 thoracic wall Anatomy 0.000 claims abstract description 9
- 229920001577 copolymer Polymers 0.000 claims description 13
- 229920000728 polyester Polymers 0.000 claims description 8
- 230000001737 promoting effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 18
- 210000001519 tissue Anatomy 0.000 abstract description 15
- 210000003484 anatomy Anatomy 0.000 abstract description 10
- 210000001099 axilla Anatomy 0.000 abstract description 7
- 229920004934 Dacron® Polymers 0.000 abstract description 5
- 210000002976 pectoralis muscle Anatomy 0.000 abstract description 5
- 239000005020 polyethylene terephthalate Substances 0.000 abstract description 5
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
- 231100000241 scar Toxicity 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 210000005075 mammary gland Anatomy 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 239000013464 silicone adhesive Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012611 container material Substances 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 125000005375 organosiloxane group Chemical group 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
Images
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
- A61F2/02—Prostheses implantable into the body
- A61F2/12—Mammary prostheses and implants
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S128/00—Surgery
- Y10S128/21—Silicone
Definitions
- a surgically implantable breast prosthesis formed from a flexible container having a front wall and a back wall; the front wall having an outer shape approximately that of the human breast and the back wall having a shape approximately that of the chest wall.
- the container includes a prolongation extending angularly outwardly toward the axilla region of the anatomy and overlying the pectoral muscle.
- the container is filled with a silicone gel and a fabric impregnated with the same material used to form the container is secured to the back wall to increase the rigidity of the back wall.
- a strip of Dacron felt is secured to the outer periphery of the back wall around the axilla prolongation and a small portion of the back wall of the container to support the prosthesis by tissue ingrowth into the Dacron felt.
- the breast prosthesis of the present invention retains the natural appearance of the breast by the inclusion of a prolongation on the prosthesis which extends outwardly from'the breast area towards the axilla region of the anatomy. This prolongation when implanted in the patent will overlie the pectoral muscle.
- This prosthesis is held in position by a strip of felt material provided around the periphery of the back wall of the prolongation and around a portion of the back wall of the container. Tissue ingrowth is promoted only in the region of the strip of material leaving the major portion of the back wall free. Since the major portion of the back wall of the prosthesis is now physiologically inert, the prosthesis has greater freedom to follow the natural movements of the breast.
- Distortion of the prosthesis by the force of the scar tissue is minimized by a fabric material which has been pre-impregnated with the polycarbonate material used to form the container and is secured to the inside surface of the back wall of the container.
- This fabric mesh increases the rigidity of the back wall with sufficient force to counteract the forces of tissue ingrowth.
- the fabric mesh extends across the entire back wall of the container and also across the back wall of the prolongation.
- FIG. I is a front view of a portion of the anatomy showing the approximate location of the prosthesis of this invention.
- FIG. 2 is a front view of a prosthesis according to this invention for implanting on the right side of the patient;
- FIG. 4 is a section view taken on line 4-4 of the prosthesis of FIG. 2 showing the position of the fabric mesh.
- FIG. 1 of the drawing the location of the prosthesis is shown in position in the right upper torso of the anatomy 12.
- the prosthesis 10 is so located that it follows generally the same contour for the right side of the anatomy as shown for the normal breast line 14 on the left side of the anatomy.
- the prosthesis 10 can be located behind the mammary gland of the patient to augment the appearance of the breast but will not interfere with the ability of the patient to nurse in the normal way, and does not interfere in any way with the functioning of the mammary gland.
- the breast prosthesis 10 is formed from a container which is filled with a soft gel 22.
- the container 20 is made of a material that has characteristics that resemble that of the normal human breast, such as softness and resiliency. The material must also be of a type which does not cause tissue reaction after implantation.
- a suitable material for the container 20 is an organopolysiloxane polycarbonate block copolymer.
- the container 20 is formed with a front wall 24 having the general shape of a natural breast and a back wall 26 which follows the contour of the chest. In this respect, the back wall 26 has a generally concave appearance to fit comfortably against the chest wall.
- the container 20 can be formed on a mold having the general shape of the prosthesis. The mold is dipped in a liquid copolymer and rotated to form the container on the outside of the mold. The mold is repeatedly dipped and rotated to cure the copolymer until the container has the desired wall thickness.
- the wall of the container formed of this material has the same thickness and has little, if any, rigidity, being very soft and very flexible in compression but has great tensile strength. It should be noted that the edge or peripheral wall 25 of the container is round or curved as seen in FIG. 4.
- the container 20 is formed with a prolongation 28 which is arranged to extend outwardly from the breast area toward the axilla region 30 of the anatomy.
- the prolongation 28 should overlie the area 32 of the pectoral muscle 32 and should be tapered outwardly toward the outer end.
- the axillary prolongation 28 follows the anatomical contour of the anatomy, thus providing a more natural appearance when implanted in the breast.
- the container 20 is filled with the silicone gel 22 to give the prosthesis the proper shape and resiliency.
- Silicone gel made in accordance with U.S. Pat. No. 3,020,260 which issued on Feb. 6, 1962 and entitled, Organosiloxane Potting Compound is a good example of a gel suitable for use in the prosthesis of this invention.
- the preferred gel for use in this invention is a liquid methyl silicone resin capable of being vulcanized to an elastomer blended with a dimethyl silicone fluid.
- a suitable fluid is General Electics VISCASIL and an appropriate resin recommended for this use is General Electrics elastomeric resin TRV-6l5.
- the proportion of resin to fluid may vary from 1:1 to 1:10 in order to obtain the proper gel consistency.
- the resin contains RzSiO-l/2 groups, RzSiO groups, and SiOz groups, where R represents methyl groups. The ratio of the groups one to the other determines the consistency of the gel.
- Means are provided in the backwall 26 of the container 20 for stiffening or increasing the rigidity of the back wall in compression and thereby resist the tendency of the container to be deformed due to the force of the scar tissue.
- the scar tissue ingrowth in the entire back wall of a prosthesis as described in Cronin U.S. Pat. No. 3,293,663 tends to deform the prosthesis forcing the rigid edges of the prosthesis outward.
- a bulge will eventually appear around the periphery of the breast of the patient.
- a bio-compatible fabric material 40 such as a polyester, polypropylene or polyamide fabric in the form of a mesh which is secured to the back wall 26 of the container 20.
- the fabric material can be secured to the inside of the back wall or embedded therein. Any suitable means can be used for securing the fabric to the back wall, such as a silicone adhesive, or by heat sealing, or by laminating with the copolymer.
- the fabric material 40 can be initially impregnated with the 'organosiloxane copolymer and cured to reduce the probability of tissue ingrowth and to increase the rigidity of the mesh.
- the impregnated mesh 40 can be secured to either the inside or outside surface of the back wall of the container. Impregnating the mesh with the copolymer will prevent tissue ingrowth if secured to the outside of the container.
- the fabric mesh 40 thereby increases the strength of the back wall in compression without increasing the thickness of the container nor the strength of the front wall 24.
- the prosthesis 10 is secured to the chest wall of the patient by means of a strip 50 of felt-like material formed from a polyester material such as Dacron which is provided around the periphery of the axillary prolongation 28, and across the top portion of the back wall 26 of the container.
- the strip of felt S limits the amount of tissue ingrowth and at the same time provides sufficient support to maintain the prosthesis in position.
- the felt strip 50 is secured to the container by a silicone adhesive and is provided only along the upper edges of the prosthesis. The felt-like material limits the penetration of the adhesive to one side of the strip leaving the other side free for tissue ingrowth.
- the prosthesis is secured to the area of the pectoral musclealong the upper portion of the container only since the normal forces acting on the prosthesis are downward, thus leaving the major portion of the back wall 26 free or unattached to the chest wall.
- This arrangement for supporting the prosthesis in the breast allows for a more natural amount of movement of the breast.
- Another important feature of the present invention is the elimination of any ridge or bulge around the prosthesis 10 which can be seen or felt after the prosthesis has been implanted in the patient. This has been achieved by forming the container as an integral unit having a curved wall or edge 25 between the front and back walls. Since the container material has no compressive strength and is very thin, the edge 25 will collapse when touched and cannot be felt through the skin of the patient.
- the prosthesis of this invention includes a number of important features which have not previously been available in a breast prosthesis.
- the most important of these features is the axillary prolongation which tapers outwardly toward the axilla region of the patient. This prolongation provides a more natural appearance to the prosthesis after implant.
- the felt strip which is used to support and maintain the implant in position allows for greater freedom of movement of the prosthesis again providing a more natural appearance.
- the curved edge provided between the front wall and back wall of the container has eliminated the bulge or ridge which generally occurs around the prosthesis.
- the fabric material secured to the back wall of the container has increased the strength or rigidity of the back wall of the container so that the prosthesis does not become distorted after implant.
- a surgically implantable breast prosthesis comprising,
- a flexible container having a front wall and a back wall, said front wall having an outer shape approximating that of the human breast, and said back wall having an outer shape approximating that of the chest wall,
- said container including a prolongation formed by said back and said front wall and extending angularly outwardly toward the axillary region of the anatomy,
- prosthesis according to claim 1 including means secured to the inside of said back wall for maintaining the shape of the prosthesis.
- the prosthesis according to claim 1 including a polyester fabric mesh impregnated with an organosiloxane copolymer secured to said back wall of said container.
- the prosthesis according to claim 1 including a polyester fabric mesh impregnated with an organosiloxane copolymer secured to the inside surface of the back wall of said container.
- a surgically implantable breast prosthesis comprising,
- a flexible container having a front wall and a back wall, said front wall having a shape approximating that of the human breast, said back wall having a shape approximating that ofthe chest wall,
- said container including an axillary prolongation
- said stiffening means comprises a fabric mesh impregnated with an organosiloxane copolymer prior to being attached to said container.
- prosthesis according to claim 6 including means secured to the periphery of the back wall of said prolongation for promoting tissue ingrowth to secure the prosthesis in position.
- said container includes a curved wall around the periphery of said container formed integral with said front wall and said back wall.
- a surgically implantable prosthesis comprising,
Abstract
A surgically implantable breast prosthesis formed from a flexible container having a front wall and a back wall; the front wall having an outer shape approximately that of the human breast and the back wall having a shape approximately that of the chest wall. The container includes a prolongation extending angularly outwardly toward the axilla region of the anatomy and overlying the pectoral muscle. The container is filled with a silicone gel and a fabric impregnated with the same material used to form the container is secured to the back wall to increase the rigidity of the back wall. A strip of Dacron felt is secured to the outer periphery of the back wall around the axilla prolongation and a small portion of the back wall of the container to support the prosthesis by tissue ingrowth into the Dacron felt.
Description
United States Patent Perras et al.
[ 51 May 30, 1972 [541 SURGICALLY IMPLANTABLE BREAST PROSTHESIS [72] Inventors: Colette Perras, Lacombe, Montreal; Jacques Papillon, St. Lambert, Montreal,
21 Appl. No.: 78,863
FOREIGN PATENTS OR APPLICATIONS 1,506,271 11/1967 France ..3/36 1,506,272 11/1967 France ..3/36
Primary Examiner-Richard A. Gaudet Assistant Examiner-Ronald L. Frinks Attomey-Ronald E. Barry and James E. Nilles 1 ABSIRACT A surgically implantable breast prosthesis formed from a flexible container having a front wall and a back wall; the front wall having an outer shape approximately that of the human breast and the back wall having a shape approximately that of the chest wall. The container includes a prolongation extending angularly outwardly toward the axilla region of the anatomy and overlying the pectoral muscle. The container is filled with a silicone gel and a fabric impregnated with the same material used to form the container is secured to the back wall to increase the rigidity of the back wall. A strip of Dacron felt is secured to the outer periphery of the back wall around the axilla prolongation and a small portion of the back wall of the container to support the prosthesis by tissue ingrowth into the Dacron felt.
12 Claims, 4 Drawing Figures SURGICALLY IMPLANTABLE BREAST PROSTHESIS BACKGROUND OF THE INVENTION Gel-filled silicone rubber breast prostheses have been employed for anumber of years to maintain the natural appearance of the breast. The most common breast prostheses of the gel filled type is shown in U. S. Pat. No. 3,293,663 issued to T. D. Cronin on Dec. 27, 1966. This prosthesis included a flexible container having an outer peripheral ridge and a fabric material secured to the back wall of a flexible container to secure the container to the chest wall. This prosthesis is implanted solely within the breast area of the patient. It has been found, however, that due to the natural tendency of the body to reject foreign objects, the prosthesis tends tolose its shape SUMMARY OF THE INVENTION The breast prosthesis of the present invention retains the natural appearance of the breast by the inclusion of a prolongation on the prosthesis which extends outwardly from'the breast area towards the axilla region of the anatomy. This prolongation when implanted in the patent will overlie the pectoral muscle. This prosthesisis held in position by a strip of felt material provided around the periphery of the back wall of the prolongation and around a portion of the back wall of the container. Tissue ingrowth is promoted only in the region of the strip of material leaving the major portion of the back wall free. Since the major portion of the back wall of the prosthesis is now physiologically inert, the prosthesis has greater freedom to follow the natural movements of the breast.
Distortion of the prosthesis by the force of the scar tissue is minimized by a fabric material which has been pre-impregnated with the polycarbonate material used to form the container and is secured to the inside surface of the back wall of the container. This fabric mesh increases the rigidity of the back wall with sufficient force to counteract the forces of tissue ingrowth. The fabric mesh extends across the entire back wall of the container and also across the back wall of the prolongation.
Other objects and advantages will be apparent from the following description when read in connection with the accompanying drawings.
TI-IE DRAWINGS FIG. I is a front view of a portion of the anatomy showing the approximate location of the prosthesis of this invention;
FIG. 2 is a front view of a prosthesis according to this invention for implanting on the right side of the patient;
F [6.3 is a back view of the prosthesis of FIG. 2; and
FIG. 4 is a section view taken on line 4-4 of the prosthesis of FIG. 2 showing the position of the fabric mesh.
DESCRIPTION OF THE INVENTION Referring to FIG. 1 of the drawing, the location of the prosthesis is shown in position in the right upper torso of the anatomy 12. The prosthesis 10 is so located that it follows generally the same contour for the right side of the anatomy as shown for the normal breast line 14 on the left side of the anatomy. The prosthesis 10 can be located behind the mammary gland of the patient to augment the appearance of the breast but will not interfere with the ability of the patient to nurse in the normal way, and does not interfere in any way with the functioning of the mammary gland.
In accordance with the invention, the breast prosthesis 10 is formed from a container which is filled with a soft gel 22. The container 20 is made of a material that has characteristics that resemble that of the normal human breast, such as softness and resiliency. The material must also be of a type which does not cause tissue reaction after implantation. A suitable material for the container 20 is an organopolysiloxane polycarbonate block copolymer.
The container 20 is formed with a front wall 24 having the general shape of a natural breast and a back wall 26 which follows the contour of the chest. In this respect, the back wall 26 has a generally concave appearance to fit comfortably against the chest wall. The container 20 can be formed on a mold having the general shape of the prosthesis. The mold is dipped in a liquid copolymer and rotated to form the container on the outside of the mold. The mold is repeatedly dipped and rotated to cure the copolymer until the container has the desired wall thickness. The wall of the container formed of this material has the same thickness and has little, if any, rigidity, being very soft and very flexible in compression but has great tensile strength. It should be noted that the edge or peripheral wall 25 of the container is round or curved as seen in FIG. 4.
The container 20 is formed with a prolongation 28 which is arranged to extend outwardly from the breast area toward the axilla region 30 of the anatomy. The prolongation 28 should overlie the area 32 of the pectoral muscle 32 and should be tapered outwardly toward the outer end. The axillary prolongation 28 follows the anatomical contour of the anatomy, thus providing a more natural appearance when implanted in the breast.-
The container 20 is filled with the silicone gel 22 to give the prosthesis the proper shape and resiliency. Silicone gel made in accordance with U.S. Pat. No. 3,020,260 which issued on Feb. 6, 1962 and entitled, Organosiloxane Potting Compound is a good example of a gel suitable for use in the prosthesis of this invention. The preferred gel for use in this invention is a liquid methyl silicone resin capable of being vulcanized to an elastomer blended with a dimethyl silicone fluid. A suitable fluid is General Electics VISCASIL and an appropriate resin recommended for this use is General Electrics elastomeric resin TRV-6l5. The proportion of resin to fluid may vary from 1:1 to 1:10 in order to obtain the proper gel consistency. The resin contains RzSiO-l/2 groups, RzSiO groups, and SiOz groups, where R represents methyl groups. The ratio of the groups one to the other determines the consistency of the gel.
Means are provided in the backwall 26 of the container 20 for stiffening or increasing the rigidity of the back wall in compression and thereby resist the tendency of the container to be deformed due to the force of the scar tissue. In this respect, it has been found that the scar tissue ingrowth in the entire back wall of a prosthesis as described in Cronin U.S. Pat. No. 3,293,663 tends to deform the prosthesis forcing the rigid edges of the prosthesis outward. A bulge will eventually appear around the periphery of the breast of the patient. This is prevented by means of a bio-compatible fabric material 40 such as a polyester, polypropylene or polyamide fabric in the form of a mesh which is secured to the back wall 26 of the container 20. The fabric material can be secured to the inside of the back wall or embedded therein. Any suitable means can be used for securing the fabric to the back wall, such as a silicone adhesive, or by heat sealing, or by laminating with the copolymer.
The fabric material 40 can be initially impregnated with the 'organosiloxane copolymer and cured to reduce the probability of tissue ingrowth and to increase the rigidity of the mesh. The impregnated mesh 40 can be secured to either the inside or outside surface of the back wall of the container. Impregnating the mesh with the copolymer will prevent tissue ingrowth if secured to the outside of the container. The fabric mesh 40 thereby increases the strength of the back wall in compression without increasing the thickness of the container nor the strength of the front wall 24.
The prosthesis 10 is secured to the chest wall of the patient by means of a strip 50 of felt-like material formed from a polyester material such as Dacron which is provided around the periphery of the axillary prolongation 28, and across the top portion of the back wall 26 of the container. The strip of felt S limits the amount of tissue ingrowth and at the same time provides sufficient support to maintain the prosthesis in position. The felt strip 50 is secured to the container by a silicone adhesive and is provided only along the upper edges of the prosthesis. The felt-like material limits the penetration of the adhesive to one side of the strip leaving the other side free for tissue ingrowth. The prosthesis is secured to the area of the pectoral musclealong the upper portion of the container only since the normal forces acting on the prosthesis are downward, thus leaving the major portion of the back wall 26 free or unattached to the chest wall. This arrangement for supporting the prosthesis in the breast allows for a more natural amount of movement of the breast.
Another important feature of the present invention is the elimination of any ridge or bulge around the prosthesis 10 which can be seen or felt after the prosthesis has been implanted in the patient. This has been achieved by forming the container as an integral unit having a curved wall or edge 25 between the front and back walls. Since the container material has no compressive strength and is very thin, the edge 25 will collapse when touched and cannot be felt through the skin of the patient.
RESUME The prosthesis of this invention includes a number of important features which have not previously been available in a breast prosthesis. The most important of these features is the axillary prolongation which tapers outwardly toward the axilla region of the patient. This prolongation provides a more natural appearance to the prosthesis after implant. The felt strip which is used to support and maintain the implant in position allows for greater freedom of movement of the prosthesis again providing a more natural appearance. The curved edge provided between the front wall and back wall of the container has eliminated the bulge or ridge which generally occurs around the prosthesis. The fabric material secured to the back wall of the container has increased the strength or rigidity of the back wall of the container so that the prosthesis does not become distorted after implant.
We claim:
1. A surgically implantable breast prosthesis comprising,
a flexible container having a front wall and a back wall, said front wall having an outer shape approximating that of the human breast, and said back wall having an outer shape approximating that of the chest wall,
said container including a prolongation formed by said back and said front wall and extending angularly outwardly toward the axillary region of the anatomy,
a silicone gel filling the inside of said container, and
means secured to the periphery of the back wall of said axillary prolongation for permitting tissue ingrowth from the area of the pectoral muscle.
2. The prosthesis according to claim 1 including means secured to the inside of said back wall for maintaining the shape of the prosthesis.
3. The prosthesis according to claim 1 including a polyester fabric mesh impregnated with an organosiloxane copolymer secured to said back wall of said container.
4. The prosthesis according to claim 1 including a polyester fabric mesh impregnated with an organosiloxane copolymer secured to the inside surface of the back wall of said container.
5. The prosthesis according to claim I wherein said back wall and said front wall are formed as an integral unit having an arcuate wall around the outer periphery of said container.
6. A surgically implantable breast prosthesis comprising,
a flexible container having a front wall and a back wall, said front wall having a shape approximating that of the human breast, said back wall having a shape approximating that ofthe chest wall,
said container including an axillary prolongation,
a silicone'gel filling the inside ofsaid container, and means for stiffening said back wall.
7. The prosthesis according to claim 6 wherein said stiffening means comprises a polyester fabric.
8. The prosthesis according to claim 6 wherein said stiffening means comprises a fabric mesh impregnated with an organosiloxane copolymer prior to being attached to said container.
9. The prosthesis according to claim 6 including means secured to the periphery of the back wall of said prolongation for promoting tissue ingrowth to secure the prosthesis in position.
10. The prosthesis according to claim 6 wherein said container includes a curved wall around the periphery of said container formed integral with said front wall and said back wall.
11. A surgically implantable prosthesis comprising,
a flexible container molded from an organosiloxane copolymer and having an axillary prolongation,
a silicone gel completely filling said container,
means attached to said container for stiffening the back portion ofsaid container, and
means secured to the periphery of said prolongation for promoting tissue ingrowth.
12. The prosthesis according to claim 1 wherein said con tainer is formed with a curved wall around the periphery.
Claims (11)
- 2. The prosthesis according to claim 1 including means secured to the inside of said back wall for maintaining the shape of the prosthesis.
- 3. The prosthesis according to claim 1 including a polyester fabric mesh impregnated with an organosiloxane copolymer secured to said back wall of said container.
- 4. The prosthesis according to claim 1 including a polyester fabric mesh impregnated with an organosiloxane copolymer secured to the inside surface of the back wall of said container.
- 5. The prosthesis according to claim 1 wherein said back wall and said front wall are formed as an integral unit having an arcuate wall around the outer periphery of said container.
- 6. A surgically implantable breast prosthesis comprising, a flexible container having a front wall and a back wall, said front wall having a shape approximating that of the human breast, said back wall having a shape approximating that of the chest wall, said container including an axillary prolongation, a silicone gel filling the inside of said container, and means for stiffening said back wall.
- 7. The prosthesis according to claim 6 wherein said stiffening means comprises a polyester fabric.
- 8. The prosthesis according to claim 6 wherein said stiffening means comprises a fabric mesh impregnated with an organosiloxane copolymer prior to being attached to said container.
- 9. The prosthesis according to claim 6 including means secured to the periphery of the back wall of said prolongation for promoting tissue ingrowth to secure the prosthesis in position.
- 10. The prosthesis according to claim 6 wherein said container includes a curved wall around the periphery of said container formed integral with said front wall and said back wall.
- 11. A surgically implantable prosthesis comprising, a flexible container molded from an organosiloxane copolymer and having an axillary prolongation, a silicone gel completely filling said container, means attached to said container for stiffening the back portion of said container, and means secured to the periphery of said prolongation for promoting tissue ingrowth.
- 12. The prosthesis according to claim 1 wherein said container is formed with a curved wall around the periphery.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US7886370A | 1970-10-07 | 1970-10-07 |
Publications (1)
Publication Number | Publication Date |
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US3665520A true US3665520A (en) | 1972-05-30 |
Family
ID=22146649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US78863A Expired - Lifetime US3665520A (en) | 1970-10-07 | 1970-10-07 | Surgically implantable breast prosthesis |
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Cited By (66)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3896506A (en) * | 1974-01-21 | 1975-07-29 | George Hankin | Breast prosthesis |
US3911503A (en) * | 1974-01-21 | 1975-10-14 | George Hankin | Breast prosthesis |
US4019209A (en) * | 1976-04-22 | 1977-04-26 | Spenco Medical Corporation | Artificial breast form and method of forming |
US4095295A (en) * | 1977-03-28 | 1978-06-20 | Douglas Lake | Adjustable, fluid-filled breast implant |
US4100627A (en) * | 1976-05-27 | 1978-07-18 | Dow Corning Corporation | Low oiling gel filled flexible articles and gels therefor |
DE2920980A1 (en) * | 1978-05-25 | 1979-11-29 | Dow Corning | SURGICAL INPLANTABLE BREAST PROSTHESIS |
US4217889A (en) * | 1976-09-15 | 1980-08-19 | Heyer-Schulte Corporation | Flap development device and method of progressively increasing skin area |
FR2447183A1 (en) * | 1979-01-24 | 1980-08-22 | Hamas Robert | BREAST PROSTHESIS |
WO1981001650A1 (en) * | 1979-12-17 | 1981-06-25 | Dow Corning | Silicone gel-filled silicone rubber article possessing reduced surface-bleed |
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US4100627A (en) * | 1976-05-27 | 1978-07-18 | Dow Corning Corporation | Low oiling gel filled flexible articles and gels therefor |
US4217889A (en) * | 1976-09-15 | 1980-08-19 | Heyer-Schulte Corporation | Flap development device and method of progressively increasing skin area |
US4095295A (en) * | 1977-03-28 | 1978-06-20 | Douglas Lake | Adjustable, fluid-filled breast implant |
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US4205401A (en) * | 1978-05-25 | 1980-06-03 | Dow Corning Corporation | Mammary prosthesis which resists capsular contracture |
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WO1981001650A1 (en) * | 1979-12-17 | 1981-06-25 | Dow Corning | Silicone gel-filled silicone rubber article possessing reduced surface-bleed |
US4740208A (en) * | 1980-11-21 | 1988-04-26 | Cavon Joseph F | Cast gel implantable prosthesis |
US4298998A (en) * | 1980-12-08 | 1981-11-10 | Naficy Sadeque S | Breast prosthesis with biologically absorbable outer container |
US4372293A (en) * | 1980-12-24 | 1983-02-08 | Vijil Rosales Cesar A | Apparatus and method for surgical correction of ptotic breasts |
US4380569A (en) * | 1981-08-03 | 1983-04-19 | Spenco Medical Corporation | Lightweight preformed stable gel structures and method of forming |
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US4592755A (en) * | 1985-06-11 | 1986-06-03 | Ethyl Corporation | Mammary implant |
US5026394A (en) * | 1989-01-10 | 1991-06-25 | Baker James L | Mammary implant |
US5236454A (en) * | 1991-11-04 | 1993-08-17 | Miller Archibald S | Stacked breast implant |
US5407445A (en) * | 1992-05-20 | 1995-04-18 | Cytrx Corporation | Gel composition for implant prosthesis and method of use |
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US6290723B1 (en) | 1994-06-14 | 2001-09-18 | Winston A. Andrews | Method of making a synthetic triglyceride filler material |
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US20080138324A1 (en) * | 1999-11-05 | 2008-06-12 | Kleinsek Donald A | Hair mesenchymal cells |
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