The evolution of breast implants

Peters, Walter

doi:10.4172/plastic-surgery.1000340

Cited by 9 publications

(14 citation statements)

References 25 publications

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“…Collagen-based wound dressings have long been used to cover burn wounds and treat ulcers. 36,56,110 They have a distinctive practical and economic advantage compared to growth-factor and cell-based treatment of full-thickness wounds and have been formulated in a number of different ways (Table I). An unconventional form consisting of powdered avian collagen is effective at expediting chronic wound healing.…”

Section: Wound Dressingsmentioning

confidence: 99%

Collagen‐based biomaterials for wound healing

2014

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With its wide distribution in soft and hard connective tissues, collagen is the most abundant of animal proteins. In vitro, natural collagen can be formed into highly organized, three-dimensional scaffolds that are intrinsically biocompatible, biodegradable, non-toxic upon exogenous application, and endowed with high tensile strength. These attributes make collagen the material of choice for wound healing and tissue engineering applications. In this article, we review the structure and molecular interactions of collagen in vivo; the recent use of natural collagen in sponges, injectables, films and membranes, dressings, and skin grafts; and the on-going development of synthetic collagen mimetic peptides as pylons to anchor cytoactive agents in wound beds.

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Section: Wound Dressingsmentioning

confidence: 99%

Collagen‐based biomaterials for wound healing

2014

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“…Introducing a metal catheter into the leaflet valve mechanism fills this type of implant. These particular implants, like all other leaflet valve saline implants, are now known to have a high deflation rate (19)(20)(21). Similar high deflation rates have also been found among leaflet valve saline-filled implants that were made by other manufacturers, including Dow Corning Corporation (USA) and McGhan, INAMED Aesthetics (USA) (19,20).…”

Section: Cases 2 and 3 -Alteration Of Leaflet Valve Mechanismmentioning

confidence: 53%

“…These particular implants, like all other leaflet valve saline implants, are now known to have a high deflation rate (19)(20)(21). Similar high deflation rates have also been found among leaflet valve saline-filled implants that were made by other manufacturers, including Dow Corning Corporation (USA) and McGhan, INAMED Aesthetics (USA) (19,20). The failure of these leaflet valve saline-filled implants was likely due to a faulty valve mechanism, possibly secondary to fibrous tissue growing into the leaflet valve (19,21).…”

Section: Cases 2 and 3 -Alteration Of Leaflet Valve Mechanismmentioning

confidence: 99%

Autoinflation of Saline-Filled Inflatable Breast Implants

Peters

2006

Canadian Journal of Plastic Surgery

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Spontaneous autoinflation of saline-filled breast implants is a rare phenomenon; only 20 cases have been reported in the world literature. Over the past seven years, three patients have presented with significant unilateral autoinflation of their smooth, single-lumen, round, saline-filled implants. This developed at various times: progressively over 23 years with a Simaplast implant; between the ninth and 10th year after augmentation with a leaflet valve implant; and slowly over the first four years with a leaflet valve implant. The etiology of the autoinflation was shown to be different for the two types of implants. The Simaplast implant had likely been injected with a hypertonic filling solution -one that was twice as concentrated as 'normal saline'. This would have created an osmotic gradient, which would have facilitated autoexpansion by diffusion. The implant solution remained clear and transparent. In addition, there were no detectable levels of glucose, uric acid or albumin in the fluid. By contrast, auto-inflation of the leaflet valve implants likely resulted from mechanical alterations of the valve mechanism. This type of implant is known to have a high deflation rate, with frequent partial deflations. It is interesting that one of the patients with the leaflet valve implants presented with an autoexpansion on one side and a partial deflation on the other side. Both implants were from the same lot number. The same mechanism that caused partial deflations may have also allowed fluid from the implant pocket to pass through the valve into the lumen of these implants. This could allow glucose, protein and cellular elements to enter into the lumen (these would not pass through an intact elastomeric shell) which would create an osmotic gradient, allowing water to enter the elastomeric shell by diffusion. The fluid in these leaflet valve implants was brownish yellow, very viscous and turbid. It contained elevated levels of glucose and uric acid which would not have passed through the elastomeric shell. Over the past 10 years, four different theories have been proposed in an attempt to explain the etiology of autoinflation. However, the findings of the present study indicate that there are only two mechanisms -a hypertonic filling solution and alterations of the valve mechanism.Key Words: Autoinflation; Saline-filled breast implants L'autogonflement des implants mammaires remplis de sérum physiologique L'autogonflement spontané des implants mammaires remplis de sérum physiologique est un phénomène rare, puisque 20 cas seulement ont été déclarés dans les publications mondiales. Depuis sept ans, trois patients ont présenté un autogonflement unilatéral important de leurs implants remplis de sérum physiologique ronds, souples et monolumières. Cette occurrence se déclare à divers moments : progressivement, sur une période de 23 ans, avec des implants Simaplast; entre la neuvième et la dixième année suivant l'augmentation mammaire avec des implants avec valve; et lentement, au cours des quatre premières années, avec...

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“…Polyethylene sponge implants (Polystan) in different forms became popular as a new solution for severe complications caused by first generation sponge prostheses. 1 However, these products caused complications at short notice. New developments in silicone gel implants in 1963 ended the era of sponges.…”

Section: Introductionmentioning

confidence: 99%

A Rare Case of Two Different Kinds of Long-Lasting Breast Implants in the Same Patient

Engin

2016

Turk J Plast Surg

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Sponge implants were used for aesthetic and reconstructive breast surgery 60 years ago. Major capsular contracture and its uncontrolled clinical symptoms were seen in nearly all cases. With the development of silicone gel implants these sponges were no longer used. This case report presents a patient who had aesthetic breast augmentation with polyethylene (Polystan) sponge implants. One of the implants lasted for 40 years, and the other implant was rejected because of a localized infection seven years after surgery, which was replaced with a silicone gel implant that lasted for 34 years.

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The evolution of breast implants

Cited by 9 publications

References 25 publications

Collagen‐based biomaterials for wound healing

Collagen‐based biomaterials for wound healing

Autoinflation of Saline-Filled Inflatable Breast Implants

A Rare Case of Two Different Kinds of Long-Lasting Breast Implants in the Same Patient

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