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WO2012009735A1 - Prothèse - Google Patents

Prothèse Download PDF

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Publication number
WO2012009735A1
WO2012009735A1 PCT/ZA2011/000048 ZA2011000048W WO2012009735A1 WO 2012009735 A1 WO2012009735 A1 WO 2012009735A1 ZA 2011000048 W ZA2011000048 W ZA 2011000048W WO 2012009735 A1 WO2012009735 A1 WO 2012009735A1
Authority
WO
WIPO (PCT)
Prior art keywords
tip
articulating
base
prosthesis according
extended position
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/ZA2011/000048
Other languages
English (en)
Inventor
Robert Ian Campbell
Deon Johan De Beer
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.)
VAAL UNIVERSITY OF TECHNOLOGY
Original Assignee
VAAL UNIVERSITY OF TECHNOLOGY
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
Application filed by VAAL UNIVERSITY OF TECHNOLOGY filed Critical VAAL UNIVERSITY OF TECHNOLOGY
Publication of WO2012009735A1 publication Critical patent/WO2012009735A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • A61F2/68—Operating or control means
    • A61F2/70—Operating or control means electrical
    • 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
    • A61F2/54—Artificial arms or hands or parts thereof
    • A61F2/58—Elbows; Wrists ; Other joints; Hands
    • A61F2/583—Hands; Wrist joints
    • A61F2/586—Fingers
    • 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
    • A61F2/5044—Designing or manufacturing processes
    • A61F2/5046—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, finite-element analysis or CAD-CAM techniques
    • 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
    • A61F2/78—Means for protecting prostheses or for attaching them to the body, e.g. bandages, harnesses, straps, or stockings for the limb stump
    • A61F2/80—Sockets, e.g. of suction type
    • 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
    • A61F2/5044—Designing or manufacturing processes
    • A61F2/5046—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, finite-element analysis or CAD-CAM techniques
    • A61F2002/5047—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, finite-element analysis or CAD-CAM techniques using mathematical models
    • A61F2002/5049—Computer aided shaping, e.g. rapid prototyping
    • 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
    • A61F2/5044—Designing or manufacturing processes
    • A61F2/5046—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, finite-element analysis or CAD-CAM techniques
    • A61F2002/505—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, finite-element analysis or CAD-CAM techniques using CAD-CAM techniques or NC-techniques
    • 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
    • A61F2/5044—Designing or manufacturing processes
    • A61F2/5046—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, finite-element analysis or CAD-CAM techniques
    • A61F2002/5052—Direct moulding or reforming to the stump
    • 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
    • A61F2/68—Operating or control means
    • A61F2002/6827—Feedback system for providing user sensation, e.g. by force, contact or position
    • 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
    • A61F2/76—Means for assembling, fitting or testing prostheses, e.g. for measuring or balancing, e.g. alignment means
    • A61F2002/7615—Measuring means
    • A61F2002/7635—Measuring means for measuring force, pressure or mechanical tension
    • 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
    • A61F2/76—Means for assembling, fitting or testing prostheses, e.g. for measuring or balancing, e.g. alignment means
    • A61F2002/7615—Measuring means
    • A61F2002/7665—Measuring means for measuring temperatures

Definitions

  • This invention relates to prostheses, more particularly to an articulating prosthesis. More particularly, but not exclusively, the invention relates to an articulating prosthesis for a finger or a toe, which may be simply produced to specifically attach the prosthesis to a stub of a given finger or toe, or to the hand or foot itself in the absence of a stub. The invention furthermore also extends to a method of manufacturing such prosthesis.
  • Articulating fingers are generally complex in design, as they require numerous mechanical parts to facilitate articulation.
  • conventional prosthesis requires an inherent adjustment, which allows it to fit the stub of a finger. These features generally result in a complex manufacturing process and prosthesis, which in the long term does not provide a snug fit between the stub of the finger articulating prosthesis. Present realisation process are this also expensive and not readily accessible by people in distant areas. Multiple parts negatively impact on reliability and the cost effectiveness of maintenance.
  • the present invention therefore, addresses the development of a novel articulating prosthesis, which at least partly alleviates the disadvantages mentioned above.
  • an articulating prosthesis including: a base adapted to be mountable on a stub of an amputated finger; a tip which is pivotably securable to the base, in order for the tip to be displaceable between an extended position, in which the tip and the base is substantially longitudinally aligned, and a retracted position, in which the tip is angularly displaced relative to the base, with the tip being biased towards the extended position; and actuating means for displacing the tip from the extended position to the retracted position.
  • the base includes a receiving formation for receiving the stub of the finger, and an anchoring formation which is securable to the hand or stub.
  • each of the tip, receiving formation and anchoring formation is provided for each of the tip, receiving formation and anchoring formation to be in the form of unitary bodies.
  • the tip may be biased towards the extended position by way of a spring or another suitable resilient element.
  • the actuating means may be in the form of a flexible elongate element extending between the base and the tip, and more particularly between the anchoring formation and the tip.
  • the actuating element prefferably configured to displace the tip from the extended position to the retracted position when a tensile force is exerted on the actuating element, and for the tip to be returned to the extended position by the biasing means when the tensile force exerted on the actuating element is removed.
  • the base and the tip may be made of various polymer materials, including a polyamide, polyester or a polyethylene; while an attachment means which pivotally attaches the stationary body to the movable body may be made of either a metal or an appropriate polymer.
  • the biasing means may include a metal spring, a metal wire, a metal rod and a rod, wire or spring made of an appropriate polymer.
  • At least the tip comprises a unitary body having zones of different hardness and resilience.
  • a process is provided whereby the patient's hands, both the afflicted hand as well as the other or both afflicted hands - are modelled such that it is possible to construct a data representation of the hands in a location remote from the patient.
  • the data representation or model is used to plan the prosthesis and to customize it for the patient's hands.
  • the final data model is inputted to a digital manufacturing machine and a prosthesis is grown.
  • the prosthesis is sent to the patient for fit and use.
  • Figure 1 is a photograph showing a perspective view of the prosthesis in accordance with the invention.
  • Figure 2 shows the prosthesis of Figure 1 from an opposite side
  • Figure 3 is a photograph of the prosthesis of Figure 1 and 2 mounted on a stub of a partially amputated finger;
  • Figure 4 shows the mounted prosthesis of Figure 3 from an opposite side
  • FIG. 5 is a schematic flow diagram of the method of realizing and manufacturing the prosthesis. DESCRIPTION OF PREFERRED EMBODIMENT
  • an articulating finger prosthesis is generally indicated by reference numeral 10.
  • the prosthesis includes a base 20 and a tip 30, which pivotably secured to the base 20.
  • the base comprises a receiving formation 21 configured and dimensioned to snugly fit over the stub of an amputated finger, and an anchoring formation 22 to which the actuating means 40 is attached as is described in more detail below.
  • the tip 30 is pivotable secured to the base 20, and more particularly to the receiving formation 21 of the base, and is pivotable between an extended position in which the tip is 30 is substantially longitudinally aligned with the base 20, and a retracted position in which the tip is angularly displaced relative to the base 20.
  • the tip 30 is biased towards the extended position by way of suitable biasing means 50.
  • the anchoring formation 22 is mounted on the remaining stub or joint of the finger, and the end of the joint is inserted into the receiving formation 21.
  • a tensile force is exerted on the actuating means 40, thus causing the tip 30 to be displaced against the bias to a retracted or bent position.
  • the tension in the actuating means 40 is released, and the bias exerted by the biasing means 50 causes the tip to return to the extended position. In this way the position of the tip 30 can be controlled by movement of the stub or remaining joint on the hand.
  • the prosthesis may include sensors to provide various signals to the patient, including proximity and pressure and temperature.
  • the prosthesis will include ubiquitous intelligence emulating the sensory feedback ordinarily provided by natural fingers.
  • the various parts of the prosthesis may be designed and manufactured to fulfill both the functional and aesthetic requirements.
  • the skin may be designed and grown to more closely emulate the natural finger.
  • the prosthesis will replace lost functionality to a patient - but may equally be used by fully fit customers desiring enhanced functionality, particularly as a form of exoskeleton with embedded intelligence.
  • the concept might also have particular value where the patient has relatively little finger loss - in which case the more compact embodiment of the current concept would enable a solution to be generated for the patient.
  • the more compact embodiment further enables the design and manufacture of a toe prosthesis.
  • the product realisation and manufacturing process comprises the following steps:
  • Step 1 A measuring kit is requested by patient or a person acting on patient's behalf - indicating the scope of loss of fingers.
  • the scope of loss may be used to adjust the size of the measuring kit to be supplied to a particular patient.
  • the process - measuring kits may be distributed to relevant service points (hospitals, doctors) as part of marketing.
  • Step 2 Measuring kit is used to mould the left and right hands of the patient.
  • Step 3 Moulds are used to cast representations of the patient's hands.
  • the representations are digitally scanned creating 3D data models of the patient's hands.
  • the cavities inside the moulds may be scanned directly.
  • the patient's hands might be scanned directly.
  • Step 4 A generic model of a prosthesis is customized to fit the requirements of the patient.
  • Step 5 The customized generic model is inputted in a dig ital manufacturing machine and the prosthesis is grown.
  • a special feature is to vary the hardness of the material during the build in order to attain the elements of bone and muscle and skin during the same manufacturing run.
  • Step 6 The patient fits and uses the prosthesis.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Transplantation (AREA)
  • Vascular Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Cardiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Manufacturing & Machinery (AREA)
  • Prostheses (AREA)

Abstract

La présente invention concerne des prothèses, et plus particulièrement une prothèse articulée. Plus particulièrement, mais pas exclusivement, l'invention concerne une prothèse articulée pour doigt ou orteil, qui peut être produite de manière simple en vue de fixer spécifiquement la prothèse au moignon d'un doigt ou orteil donné, ou à la main ou au pied eux-mêmes en l'absence de moignon. En outre, l'invention s'étend également à un procédé de fabrication d'une telle prothèse. La prothèse comprend : une embase prévue pour pouvoir être montée sur un moignon de doigt amputé ; un bout susceptible d'être fixé de manière pivotante à l'embase et de se déplacer entre une position déployée et une position rétractée, un moyen d'actionnement servant à faire passer le bout de la position déployée à la position rétractée, le bout étant sollicité vers la position déployée.
PCT/ZA2011/000048 2010-07-16 2011-07-15 Prothèse Ceased WO2012009735A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA201005077 2010-07-16
ZA2010/05077 2010-07-16

Publications (1)

Publication Number Publication Date
WO2012009735A1 true WO2012009735A1 (fr) 2012-01-19

Family

ID=45469834

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2011/000048 Ceased WO2012009735A1 (fr) 2010-07-16 2011-07-15 Prothèse

Country Status (1)

Country Link
WO (1) WO2012009735A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US319776A (en) * 1885-06-09 Tebeitoby
WO1991007149A1 (fr) * 1989-11-15 1991-05-30 Ab Volvo Articulation artificielle destinee notamment a des articulations digitales
US20050043822A1 (en) * 2003-08-21 2005-02-24 Didrick Daniel Dean Articulated artificial finger assembly
CN101496750A (zh) * 2009-01-24 2009-08-05 哈尔滨工业大学 被动驱动型两自由度残疾人用假手指
CN201299671Y (zh) * 2008-07-14 2009-09-02 阙玉涛 佩戴式机械仿真手指

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US319776A (en) * 1885-06-09 Tebeitoby
WO1991007149A1 (fr) * 1989-11-15 1991-05-30 Ab Volvo Articulation artificielle destinee notamment a des articulations digitales
US20050043822A1 (en) * 2003-08-21 2005-02-24 Didrick Daniel Dean Articulated artificial finger assembly
CN201299671Y (zh) * 2008-07-14 2009-09-02 阙玉涛 佩戴式机械仿真手指
CN101496750A (zh) * 2009-01-24 2009-08-05 哈尔滨工业大学 被动驱动型两自由度残疾人用假手指

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