NZ531099A - Total metatarso-phalangeal prosthesis, and ancillary devices for fitting this prosthesis - Google Patents
Total metatarso-phalangeal prosthesis, and ancillary devices for fitting this prosthesisInfo
- Publication number
- NZ531099A NZ531099A NZ531099A NZ53109904A NZ531099A NZ 531099 A NZ531099 A NZ 531099A NZ 531099 A NZ531099 A NZ 531099A NZ 53109904 A NZ53109904 A NZ 53109904A NZ 531099 A NZ531099 A NZ 531099A
- Authority
- NZ
- New Zealand
- Prior art keywords
- metatarsal
- implant
- phalangeal
- implants
- prosthesis
- Prior art date
Links
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/14—Surgical saws ; Accessories therefor
- A61B17/15—Guides therefor
-
- 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
- A61F2/30—Joints
- A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
- A61F2/4225—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for feet, e.g. toes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/067—Measuring instruments not otherwise provided for for measuring angles
-
- 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
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/30205—Three-dimensional shapes conical
- A61F2002/3021—Three-dimensional shapes conical frustoconical
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- 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
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/30205—Three-dimensional shapes conical
- A61F2002/30214—Three-dimensional shapes conical having tapered sections of different conicities
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- 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
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/30205—Three-dimensional shapes conical
- A61F2002/30217—Three-dimensional shapes conical hollow cones, e.g. tubular-like cones
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- 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
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/30224—Three-dimensional shapes cylindrical
-
- 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
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
- A61F2002/30345—Multiple conical connection, i.e. the protrusion and recess having several tapered sections of different complementary conicities
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- 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
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
-
- 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
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
- A61F2002/30616—Sets comprising a plurality of prosthetic parts of different sizes or orientations
-
- 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
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
-
- 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
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
- A61F2002/30884—Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
-
- 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
- A61F2/30—Joints
- A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
- A61F2/4225—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for feet, e.g. toes
- A61F2002/4233—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for feet, e.g. toes for metatarso-phalangeal joints, i.e. MTP joints
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- 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
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4657—Measuring instruments used for implanting artificial joints
- A61F2002/4668—Measuring instruments used for implanting artificial joints for measuring angles
-
- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
-
- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0067—Three-dimensional shapes conical
-
- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0069—Three-dimensional shapes cylindrical
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Cardiology (AREA)
- Vascular Medicine (AREA)
- Dentistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Transplantation (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Prostheses (AREA)
- Materials For Medical Uses (AREA)
Abstract
Description
Claims (20)
- CLAIMS Total metatarso-phalangeal prosthesis comprising a metatarsal implant (1) comprising an anchoring rod (4) intended to be arranged longitudinally in the metatarsal (M) , and a head (6) situated at the end of the rod, intended to be applied against the resected surface of the end of the metatarsal, and having an articular surface (10) , and a phalangeal implant (2) having a body (14) intended to be introduced axially into the phalanx, and a rim (16) situated at the proximal end of said part and capable of presenting an articular surface (18) complementing the articular surface (10) presented by the body of the metatarsal implant, wherein the head (6) of the metatarsal implant has, opposite the articular surface (10), an inclined and plane rear face (7) intended to bear against a resected surface of the metatarsal (M) , said rear face (7) forming, with the plane perpendicular to the axis of the anchoring rod (4) , an angle of 20° + 5° so as to extend rearwards towards the top, starting from the lower base of the metatarsal, and in that the articular surface (10) of said head and said inclined rear face (7) meet at a lower point (11) , forming the lowest point of the metatarsal implant, the distance between the axis of the anchoring rod (4) and said lowest point (11) being determined in such a way that the implant head (6) does not extend into the sesamoid grooves disposed on the lower base of the metatarsal.
- Prosthesis according to Claim 1, wherein said articular surface (18) of the phalangeal implant (2) is carried by a separate plug (3) which can be - 20 - introduced into and held in the phalangeal implant (2) .
- Prosthesis according to one of the preceding claims, wherein the articular surface (10) of the body of the implant has only a single radius in the sagittal plane and a single radius in the horizontal plane, the articular face (18) of the phalangeal implant being congruent and being carried by a plug (3) which is able to turn about the axis of the phalangeal implant.
- Prosthesis according to either of Claims 2 and 3, wherein the articular surface (18) of the plug (3) has on its periphery, particularly on a substantial part of the periphery of the lower half and/or of the periphery of the upper half, an indentation (20, 21) determining a convex edge for the clearance of the articulation in the position of flexion and/or of extension.
- Prosthesis according to one of Claims 2 to 4, wherein the phalangeal implant (2) has a hollow frustoconical anchoring body (14) continued, at its proximal end, by a head in the shape of a peripheral frustoconical rim (16), the plug (3) having a corresponding shape, namely a frustoconical distal portion (19) whose conicity corresponds to that of the body, and continued by a plateau (18) having a peripheral distal surface whose conicity corresponds to that of the rim (16) of the implant, which also means the plug can be given a particularly robust form.
- Prosthesis according to one of the preceding claims, wherein the proximal face (7), inclined at 20° ± 5°, of the head (6) of the metatarsal implant is continued, towards the top, by an upper face (8) forming, with the preceding one, a - 21 - dihedron, preferably with an obtuse angle of 145° ± 20°, intended to be applied against an upper resected plane inclined by the same angle in relation to the resected surface receiving the 5 proximal face (7) .
- 7. Set of metatarsal implants comprising several metatarsal implants (1) of different sizes, designed to form part of a prosthesis in 10 accordance with any one of Claims 1 to 6, the distance (h) between the axis of the anchoring rod (4) and the lowest point (11) being substantially constant for all the implants of the set. 15
- 8. Set of implants according to Claim 7, wherein the metatarsal implants (1) have the characteristics of Claim 6, the articular faces (10) of the heads (6) of these implants being dimensioned so as to meet the corresponding upper face (8) at an upper 20 point (12), at different predetermined respective distances from the axis of the anchoring rod (4).
- 9. Set of implants according to either of Claims 7 and 8, wherein the diameter of the rod (4) of the 25 metatarsal implants (1) is substantially constant.
- 10. Set of prostheses which comprises a set of metatarsal implants (1) in accordance with any one of Claims 7 to 9, several phalangeal implants (2) 3 0 of different sizes, and several plugs (3) also of different sizes, wherein the plug (3) whose articular surface (18) is congruent with the articular surface (18) of a given metatarsal implant can be received in at least two phalangeal 35 implants of consecutive sizes in order to form a prosthesis in accordance with any one of Claims 1 to 7. - 22 -
- 11. Set according to Claim 9, wherein the phalangeal implant (2) has a frustoconical body (14) having the same dimension for all the implants in the set, this cone" being followed by the frustoconical 5 rim (16) , only the diameter of the periphery of this rim (16) being variable from one implant to another in the set. Set according to either of Claims 10 and 11, comprising three metatarsal implants (1) , wherein the radii of curvature of the articular surface (10) are, respectively, 7 ± 0.5, 8 ± 0.5 and 9 ± 0.5 mm in the sagittal plane and 14 + 1, 16 ± 1 and 18 ± 1 mm in the horizontal plane, and the lowest points (11) in the sagittal plane are situated at a common distance (h) of between about 2 and 6 mm from the axis.
- 12 . 10 15
- 13. Set according to Claim 12, with four sizes of 2 0 phalangeal implants (2) , each implant having an implant body (14) with a distal end diameter of 4.7 + 2 mm and a diameter at•the periphery of the rim (16) of 12 + 1, 13.3 + 1, 14.6 + 1 and 16 ± 1 mm. 25 30
- 14. Set according to Claim 13, wherein it comprises three plugs (3) of different sizes, namely plugs with a diameter of 12 ± 0.5, 13 ± 0.5 and 14 ± 0.5 mm for a set of three plugs.
- 15. Ancillary position-marking device (31) adapted to cooperate with a prosthesis according to one of the claims 1 to 6, wherein said ancillary position-marking device has a body (32) equipped with a 3 5 cylindrical inner passage allowing the device in use to slide and to turn about a broach implanted axially in the metatarsal, and, starting from said Intellectual PrPpBrty I body (32), two bent arms (33, 34) whose ends are Office Of N.Z. I arranged spatially so as to be able to substantially 1 SEP 2005 1 into the sesamoid grooves, towards their distal i c r. P l V E D I - 23 - end at the lower part of the metatarsal, in such a way as to maintain the body (32) in a suitable axial and angular position in relation to said two sesamoid grooves, said body (32) additionally having 5 a means (35) for receiving and positioning of an ancillary metatarsal resecting device, extending parallel to the axis of the implant and hence to the broach, and at a distance from the metatarsal in the lateral direction towards the sagittal plane of the 10 patient.
- 16. Ancillary device according to Claim 15,wherein said receiving means (3 5) is a rod of non-circular cross section. 15
- 17. Ancillary device (40) for guiding the resecting of the metatarsal adapted to cooperate with a prosthesis according to one of the claims 1 to 6, wherein said ancillary device has a body (41) with a 2 0 passage allowing the device in use to slide on the receiving means of a position-marking ancillary device (31) according to either of claims 15 and 16, said body having means (42) for fixing it relative to the bone, said body (41) additionally 2 5 having at least one resection slit for the passage of an oscillating saw, said slit (44) being inclined by an angle of 70° +/- 20° with respect to the axis of the broach when the assembly is mounted on the metatarsal. 30
- 18. Ancillary device according to Claim 17, wherein it comprises a second slit (45) which is more inclined, so that said two slits (44, 45) thus make it possible to form firstly the resected surface receiving the rear face (7) of the head 3 5 (6) of the implant, and the second resected surface forming an obtuse angle, preferably of 145° + 20°, with the aforementioned resected surface. J Intellects Propon, Office 6* NX -7 SEP 2005 RECEIVED. - 24 - 10 15
- 19. Ancillary device (50) for phalangeal resection, adapted to cooperate with a prosthesis according to one of claims 1 to 6, wherein said ancillary device has a body (51) allowing the device in use to be fixed laterally on the cortical bone of the phalanx, at least one slit (53) for phalangeal - resection, and an extension (55) intended to bear against a corresponding end of the ancillary device (40) for metatarsal resection according to either of claims 17 and 18, in such a way as to exactly define the relative positions of the two resecting assemblies, the metatarsal and phalangeal resection slits being substantially parallel when the two ancillary resecting devices are combined.
- 20. Ancillary device according to Claim 19, wherein it comprises two parallel resection slits (53, 54) . DEPUY FRANCE & PIED INNOVATION 2 By their Attorneys 25 JAMES & WELLS
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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FR0309707A FR2858545B1 (en) | 2003-08-06 | 2003-08-06 | METATARSO-PHALANGIAN TOTAL PROSTHESIS, AND ANCILLARIES FOR THE ESTABLISHMENT OF THIS PROSTHESIS. |
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NZ531099A NZ531099A (en) | 2003-08-06 | 2004-02-10 | Total metatarso-phalangeal prosthesis, and ancillary devices for fitting this prosthesis |
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EP (1) | EP1508316B1 (en) |
JP (1) | JP2005052629A (en) |
AT (1) | ATE362352T1 (en) |
AU (1) | AU2004201647B2 (en) |
DE (1) | DE602004006471T2 (en) |
ES (1) | ES2285370T3 (en) |
FR (1) | FR2858545B1 (en) |
NZ (1) | NZ531099A (en) |
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WO2009073924A1 (en) * | 2007-12-12 | 2009-06-18 | Timothy Edward Schneider | Endoprosthesis for a metatarsophalangeal joint |
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FR3022137B1 (en) * | 2014-06-13 | 2016-06-03 | Serf Extremity | ASSEMBLY FORMED BY A PROSTHESIS OF METATARSO-PHALANGEAL ARTICULATION AND BY THE INSTRUMENTS FOR THE PLACEMENT OF THIS PROSTHESIS |
FR3023472B1 (en) * | 2014-07-10 | 2016-07-08 | Biotech Ortho | ARTHROPLASTY OF THE FOOT ASSEMBLY |
US20160015426A1 (en) | 2014-07-15 | 2016-01-21 | Treace Medical Concepts, Inc. | Bone positioning and cutting system and method |
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US10849663B2 (en) | 2015-07-14 | 2020-12-01 | Treace Medical Concepts, Inc. | Bone cutting guide systems and methods |
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2003
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- 2004-02-06 EP EP04290319A patent/EP1508316B1/en not_active Expired - Lifetime
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ATE362352T1 (en) | 2007-06-15 |
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FR2858545B1 (en) | 2005-11-04 |
FR2858545A1 (en) | 2005-02-11 |
DE602004006471T2 (en) | 2008-01-24 |
AU2004201647A1 (en) | 2005-02-24 |
EP1508316B1 (en) | 2007-05-16 |
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