A Hollow Silicone Finger Prosthesis with Modified Metal-Mesh Conformer

Saxena, Kanupriya; Sharma, Anil Kumar; Hussain, Mohd Abid Zahir; Thombare, Ram; Bhasin, Saranjit Singh

doi:10.1007/s13191-012-0204-z

Cited by 8 publications

(14 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hand and finger prostheses can include both aesthetic prostheses [292,293] and functional prostheses that include robotic elements that are covered with a cosmetic glove. [294] PVC and silicone are often used for the external materials and can enclose the electronics to make the prosthesis aesthetically pleasing and offer increased protection to the electronics.…”

Section: Prosthetic Hands and Fingersmentioning

confidence: 99%

Past, Present, and Future of Soft‐Tissue Prosthetics: Advanced Polymers and Advanced Manufacturing

et al. 2020

View full text Add to dashboard Cite

past 30 years, [12,13] it is only the last decade that has seen its rapid development as part of the fourth industrial revolution. [14] This change in practice is evidenced by the significant fraction of recent literature describing advances in 3D printed prostheses, including technological advances [4,15-18] and clinical reports. [19,20] Further innovations involving collaborations between clinicians, academics, and industry, promise even greater capabilities. The future will see 3D printers that can mix materials as desired during fabrication [21] and those that can 3D print organic semiconductors and piezoelectric polymers for sensing and bionics [22-24] (Figure 1). This report is focused on polymers for soft tissue, external, personalized, prosthetics with clinical applications for the ear, [25] nose, [26] eye, [27] face, [28] breast, [29] and hand. [30] The characteristics of both traditional and 3D printable polymeric materials, as well as current advanced manufacturing technologies and those in development, are also reviewed. The earliest evidence of prosthetics dates back to ≈2300 BC, where Egyptian mummies have been discovered with eye, nose, and genital reconstructions fashioned from plaster packed with mud, sand, linen, butter, or soda (Figure 1). [31] Wood, cloth, natural waxes, resins, and metals were later used as the material of choice for rudimentary prostheses. [32] Prostheses remained relatively unchanged for thousands of years until the 16th century, where prosthetic noses and eyes were made from parchment, wax, wood, hard rubber, gold, silver, and copper. [33] Metals continued as a fundamental material throughout the 19th century, largely due to their ability to be shaped and molded as needed. [34,35] One of the first polymers to be used in prosthetics, poly(methyl methacrylate) (PMMA), was developed in response to the glass shortages in the World Wars of the 20th Century. [36] This polymer went on to become the most common prosthetic material of the time, and still finds use today in artificial eyes [33] and prosthetic substructures. [37] Further innovations in the 20th century produced many new polymers, such as vinyls, copolymers, plastisols, and one of the most significant materials in prosthetics, silicone. [38] Discovered in the early 1900s by Fredrick Kipping, silicone was first used in prosthetics by George W Barnhart in 1960. [39] This versatile polymer remains a primary prosthetic material today due to its soft tissue-like properties, ease of manipulation, chemical inertness, durability, and excellent biocompatibility. [40,41] The search for alternative materials Millions of people worldwide experience disfigurement due to cancers, congenital defects, or trauma, leading to significant psychological, social, and economic disadvantage. Prosthetics aim to reduce their suffering by restoring aesthetics and function using synthetic materials that mimic the characteristics of native tissue. In the 1900s, natural materials used for thousands of years in prosthetics were replaced by syntheti...

show abstract

Section: Prosthetic Hands and Fingersmentioning

confidence: 99%

Past, Present, and Future of Soft‐Tissue Prosthetics: Advanced Polymers and Advanced Manufacturing

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Reproduced with permission from Taylor & Francis (Ariani et al, 2012), (b) Prosthetic finger; (left) brass rod connected to a ring for attachment of hollow silicone prosthesis. Reproduced with permission from Springer (Saxena et al, 2014). (c) Facial prosthesis retained by attachment to spectacles.…”

Section: Patient Wellbeingmentioning

confidence: 99%

“…The typical fabrication methodology used irreversible hydrocolloid to take an impression of the defect, followed by the creation of a positive cast using dental stone. The final wax patterns were then sculpted using either an impression of the contralateral finger (Shanmuganathan et al, 2011;Jacob et al, 2012;Aydin et al, 2013;Raghu et al, 2013;Saxena et al, 2014) or a donor finger (Arora et al, 2011;Kaira and Dabral, 2014) for their shape. Attachment strategies for non-functional prosthetic fingers include a glove fit over the stump of the remaining finger (Arora et al, 2011;Shanmuganathan et al, 2011;Jacob et al, 2012;Kaira and Dabral, 2014), implants (Aydin et al, 2013), or by a ring (Arora et al, 2011;Raghu et al, 2013).…”

Section: Prosthetic Hands and Fingersmentioning

confidence: 99%

“…Prosthetic fingernails typically employ a heat cured clear acrylic material further secured with RTV silicone or a cyanoacrylate adhesive (Arora et al, 2011;Kaira and Dabral, 2014). Saxena et al (2014) developed a separate prosthetic finger fabrication and attachment approach as depicted in Figure 3b. In this case, the wax pattern of the finger was designed to be hollow to allow for the insertion of a conically shaped brass rod (5 mm thick) to be inside the prosthesis for stability.…”

Section: Prosthetic Hands and Fingersmentioning

confidence: 99%

“…The final prosthetic finger was then attached to the stump of the patient's finger by connecting the brass rod with a ring at the base of the prosthesis. This was connected to another ring worn by the patient on their intact ring finger to ensure attachment and stability (Saxena et al, 2014).…”

Section: Prosthetic Hands and Fingersmentioning

confidence: 99%

See 2 more Smart Citations

Advancements in Soft-Tissue Prosthetics Part A: The Art of Imitating Life

Cruz

Ross

Powell

et al. 2020

Front. Bioeng. Biotechnol.

View full text Add to dashboard Cite

Physical disfigurement due to congenital defects, trauma, or cancer causes considerable distress and physical impairment for millions of people worldwide; impacting their economic, psychological and social wellbeing. Since 3000 B.C., prosthetic devices have been used to address these issues by restoring both aesthetics and utility to those with disfigurement. Internationally, academic and industry researchers are constantly developing new materials and manufacturing techniques to provide higher quality and lower cost prostheses to those people who need them. New advanced technologies including 3D imaging, modeling, and printing are revolutionizing the way prostheses are now made. These new approaches are disrupting the traditional and manual art form of prosthetic production which are laborious and costly and are being replaced by more precise and quantitative processes which enable the rapid, low cost production of patient-specific prostheses. In this two part review, we provide a comprehensive report of past, present and emerging soft-tissue prosthetic materials and manufacturing techniques. In this review, part A, we examine, historically, the ideal properts of a polymeric material when applied in soft-tissue prosthetics. We also detail new research approaches to target specific tissues which commonly require aesthetic restoration (e.g. ear, nose and eyes) and discuss both traditional and advanced fabrication methods, from hand-crafted impression based approaches to advanced manufactured prosthetics. We discuss the chemistry and related details of most significant synthetic polymers used in soft-tissue prosthetics in Part B. As advanced manufacturing transitions from research into practice, the five millennia history of prosthetics enters a new age of economic, personalized, advanced soft tissue prosthetics and with this comes significantly improved quality of life for the people affected by tissue loss.

show abstract

Cosmetic Glove-Like Finger Prosthesis—A Novel Technique: A Case Report

et al. 2020

View full text Add to dashboard Cite

Introduction Complete or partial finger loss is the most frequently encountered form of partial hand loss, which can result in physical, psychosocial, and economic damage to an individual. Thus, fabrication of a prosthesis that can offer a psychological, functional, and rehabilitative advantage can be a big morale booster to such individuals. Materials and Methods This clinical report presents a novel technique of prosthetic rehabilitation of a left thumb with thermoplastic resin and silicone material. Methods include making impressions of the donor and recipient finger, duplication of wax patterns of the donor finger, fabrication of a master cast for the fabrication of the finger using thermoplastic resin and silicone material, and external characterization. Results The thermoplastic resin silicone elastomeric prosthesis clearly fulfilled the patient's objective of restoring his defect with an aesthetically superior, lightweight prosthesis without the need to undergo any surgical procedures. The patient was comfortable using the prosthesis and was satisfied with the retention of the prosthesis. However, application of external characterization was required every 6 months. Discussion This article presents a new application of thermoplastic resin in maxillofacial prosthesis. This technique eliminates lengthy laboratory and clinical procedures and reduces the chair side time for practitioner and patient. It also is a cost-effective technique. Conclusion A convenient and affordable method of prosthetic rehabilitation of amputated fingers has been presented. The morale of the patient was also boosted to a great extent.

show abstract

A Hollow Silicone Finger Prosthesis with Modified Metal-Mesh Conformer

Cited by 8 publications

References 2 publications

Past, Present, and Future of Soft‐Tissue Prosthetics: Advanced Polymers and Advanced Manufacturing

Past, Present, and Future of Soft‐Tissue Prosthetics: Advanced Polymers and Advanced Manufacturing

Advancements in Soft-Tissue Prosthetics Part A: The Art of Imitating Life

Cosmetic Glove-Like Finger Prosthesis—A Novel Technique: A Case Report

Contact Info

Product

Resources

About