US20010025199A1 - Artificial finger joint - Google Patents

Artificial finger joint Download PDF

Info

Publication number
US20010025199A1
US20010025199A1 US09/813,441 US81344101A US2001025199A1 US 20010025199 A1 US20010025199 A1 US 20010025199A1 US 81344101 A US81344101 A US 81344101A US 2001025199 A1 US2001025199 A1 US 2001025199A1
Authority
US
United States
Prior art keywords
joint
abutment
pocket
position
guide pin
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.)
Granted
Application number
US09/813,441
Other versions
US6423097B2 (en
Inventor
Markus Rauscher
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.)
Zimmer GmbH
Original Assignee
Zimmer GmbH
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
Priority to EP00810236 priority Critical
Priority to EP00810236 priority
Priority to EP00810236.0 priority
Application filed by Zimmer GmbH filed Critical Zimmer GmbH
Assigned to SULZER ORTHOPEDICS LTD. reassignment SULZER ORTHOPEDICS LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RAUSCHER, MARKUS
Publication of US20010025199A1 publication Critical patent/US20010025199A1/en
Application granted granted Critical
Publication of US6423097B2 publication Critical patent/US6423097B2/en
Assigned to ZIMMER GMBH reassignment ZIMMER GMBH TRANSFORMATION WITHOUT LIQUIDATION Assignors: SULZER ORTHOPEDICS LTD
Application status is Active legal-status Critical
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/42Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
    • A61F2/4241Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108Shapes
    • A61F2002/3011Cross-sections or two-dimensional shapes
    • A61F2002/30112Rounded shapes, e.g. with rounded corners
    • A61F2002/30113Rounded shapes, e.g. with rounded corners circular
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108Shapes
    • A61F2002/3011Cross-sections or two-dimensional shapes
    • A61F2002/30138Convex polygonal shapes
    • A61F2002/30153Convex polygonal shapes rectangular
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108Shapes
    • A61F2002/3011Cross-sections or two-dimensional shapes
    • A61F2002/30138Convex polygonal shapes
    • A61F2002/30156Convex polygonal shapes triangular
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108Shapes
    • A61F2002/3011Cross-sections or two-dimensional shapes
    • A61F2002/30159Concave polygonal shapes
    • A61F2002/30179X-shaped
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30621Features concering the anatomical functioning or articulation of the prosthetic joint
    • A61F2002/30649Ball-and-socket joints
    • A61F2002/30662Ball-and-socket joints with rotation-limiting means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/3082Grooves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878Special external or bone-contacting surfaces, 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878Special external or bone-contacting surfaces, 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
    • A61F2002/30884Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/42Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
    • A61F2/4241Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers
    • A61F2002/4243Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers for interphalangeal joints, i.e. IP joints
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/42Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
    • A61F2/4241Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers
    • A61F2002/4251Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers for metacarpo-phalangeal joints, i.e. MCP or MP joints, e.g. knuckle joints
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004Rounded shapes, e.g. with rounded corners
    • A61F2230/0006Rounded shapes, e.g. with rounded corners circular
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0017Angular shapes
    • A61F2230/0019Angular shapes rectangular
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0017Angular shapes
    • A61F2230/0023Angular shapes triangular
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028Shapes in the form of latin or greek characters
    • A61F2230/0058X-shaped
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2310/00Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005The prosthesis being constructed from a particular material
    • A61F2310/00011Metals or alloys
    • A61F2310/00023Titanium or titanium-based alloys, e.g. Ti-Ni alloys
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2310/00Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005The prosthesis being constructed from a particular material
    • A61F2310/00011Metals or alloys
    • A61F2310/00029Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium

Abstract

The invention shows an artificial finger joint comprising a convex joint head (1) and comprising a concave joint shell (2) which can be fastened independently of one another with a respective shaft (3, 4) in a bone end (5, 6) and which can be moved in an articulation plane from an extension position (7) with parallel shaft axes (8, 9) into a hyperextension position (10) or into an articulation end position (11). A guide pin (12) projects out of the joint shell (2) in the direction of its shaft axis (9) and protrudes into a pocket (13) of the joint head (1), with the pocket (13) having a first abutment (16) for the guide pin (12) in the hyperextension position (10). A second abutment (17) between the joint shell (2) and the joint head prevents a tilting of the guide pin (12) and shaft (4) of the joint shell (2) about the first abutment (16) in the hyperextension position (10).

Description

  • The invention relates to an artificial finger joint comprising a convex joint head and comprising a concave joint shell which can be fastened independently of one another with a respective shaft in a bone end and which can be moved in an articulation plane from an extension position with parallel shaft axes into a hyperextension position or into an articulation end position. [0001]
  • Artificial finger joints occur between the metacarpal bone and the finger bone or between individual finger bones. In order to be able to operate at a finger joint of this kind, the surgeon must expose the bone ends and push aside minute blood vessels, nerves and tendons without overstretching them. It is therefore usual with the lateral pushing aside, which would cause a stretching, to bring the joint into articulation position, in which both bone ends are exposed for a resection. Accordingly it is an advantage when the joint head and the joint pan can be inserted independently of one another and can be brought into engagement as in a natural joint without the above mentioned overstretching arising. [0002]
  • Thus the patent specification U.S. Pat. No. 4,231,121 shows a finger joint which consists of a joint head with a formed on shaft and of a joint shell with a formed on shaft, which can be pushed together in an articulation position. The freedom of movement goes from an extension position into a hyperextension position or into an articulation end position. An embodiment of this kind has the disadvantage that in the end positions, for example in the hyperextension, a sliding off of the joint shell from the joint head can take place when a transverse force arises since the equilibrium state depends substantially on the force with which the two joint parts are held together by the ligaments which surround them. [0003]
  • The object of the invention is to improve artificial finger joints in this regard. This object is satisfied in that a guide pin projects out of the joint shell in the direction of its shaft axis and protrudes into a pocket of the joint head, with the pocket having a first abutment for the guide pin in the hyperextension position; and in that a second abutment is present between the joint shell and the joint head in the hyperextension position and prevents a tilting of the guide pin and the shaft of the joint shell about the first abutment. [0004]
  • The invention has the advantage that, through the provision of a second abutment in a position in which a first abutment is reached for the hyperextension position and would provide a momentary center for a continuation of the rotation, the movement is stopped. [0005]
  • Further advantageous improvements result from the subordinate claims 2 to 12. [0006]
  • Thus it is advantageous that through a corresponding design of the pocket, pivotal angles α from 80° to 130° between the hyperextension position and the articulation end position are possible which lie in the pivotal range of a natural finger joint. [0007]
  • One embodiment provides a cap which is formed on at the joint shell in the direction of the hyperextension position and which when the hyperextension position is reached encounters a second abutment at the joint head which is displaced by a distance S beyond a point of rotation at the joint head in the direction towards the shaft of the latter. An advantage of this cap is that it holds specific ligaments at a distance and is at the same time guided by these ligaments. The guide pin can project from the joint shell as a round pin, which is simple in the manufacturing technology. A further advantage of this cap consists in that the palmar luxation is suppressed in a grasping movement. [0008]
  • A further embodiment provides for the pocket having beyond a point of rotation an undercut extension with a second abutment which is arranged oppositely to the first abutment in order to stop the guide pin, which is extended beyond the point of rotation, when it encounters the first abutment. This embodiment has the advantage that the second abutment lies within the joint head and can not disturb externally. [0009]
  • Between the guide pin and the pocket, a clearance from the lateral guiding cheeks can be provided which amounts to more than 5% of the width of the guide pin in order to enable an articulation in a laterally slightly angled off position of the shaft axes. This has the advantage that fingers can articulate parallel to one another in spite of the splay position of the metacarpal bone. [0010]
  • With a rectangular cross-section of the guide pin the clearance from the guiding cheeks can be adjusted in such a manner that a rotational securing is achieved through a rectangular diagonal which is longer than the spacing of the guiding cheeks. A guide pin which is reduced by the amount of the clearance from the guiding cheeks has the advantage that the degrees of freedom as in a natural finger joint are present for the joint movements. [0011]
  • A further advantage consists in that the bearing surfaces of the joint head and the bearing shell are congruent in the hyperextension position in order to be able to take up the greatest bearing forces in this position, that the curvature of the joint head may however increase in the articulation direction in order not to tension the ligaments too strongly during the articulation. [0012]
  • Analogously to the restriction of the movement in the hyperextension, a third abutment can be provided in the articulation end position and a tilting about this third abutment can be prevented through a fourth abutment, which for example is likewise provided in the pocket and acts on the guide pin. [0013]
  • In order to realize a pocket with undercut abutments in a simple manufacturing technology, a pocket without undercuttings can first be produced in which subsequently provided bolts form the undercuttings and the abutments. The joint head and the joint shell are advantageously manufactured of body compatible metals, for example of titanium or titanium alloys or cobalt-chromium-molybdenum alloys. The frictional relationships between the articulation surfaces can be improved when one of the surfaces consists of plastic, for example of polyethylene or PEAK (polyaryl ether ketone). [0014]
  • In the following the invention will be illustrated with reference to exemplary embodiments. Shown are: [0015]
  • FIG. 1 schematically, a highly enlarged longitudinal section of an artificial finger joint in accordance with the invention in the hyperextension position; [0016]
  • FIG. 2 schematically, a side view of the joint head of FIG. 1; [0017]
  • FIG. 3 schematically, a view of the end side of the joint head of FIG. 2 with a rectangular guide pin which protrudes into the pocket; [0018]
  • FIG. 4 schematically, a longitudinal section analogous to FIG. 1 in which abutments for a guide pin are formed by subsequently inserted bolts; [0019]
  • FIG. 5 schematically, a side view of the joint head of FIG. 4; [0020]
  • FIG. 6 schematically, a view of the end side of the joint head of FIG. 5; [0021]
  • FIG. 7 schematically, a further solution analogous to FIG. 1 in which the joint head can be manufactured as an injection molded part with a mold separation perpendicular to the hyperextension; [0022]
  • FIG. 8 schematically, a view of the end side of the joint head of FIG. 7; [0023]
  • FIG. 9 schematically, a side view of the joint shell and the guide pin of FIG. 8; [0024]
  • FIG. 10 schematically, a longitudinal section through a further embodiment of an artificial finger joint with a cap which is formed on at the joint shell; [0025]
  • FIG. 11 schematically, a view of the joint head of FIG. 10; [0026]
  • FIG. 12 schematically, a bearing surface which is manufactured as a plastic part and which can be pushed on at the joint shell of FIG. 10; [0027]
  • FIG. 13 schematically, the joint shell of FIG. 10 with reduced dimensions for the reception of the plastic part in FIG. 12; and [0028]
  • FIG. 14 schematically, a side view of the joint shell of FIG. 10.[0029]
  • The figures of the exemplary embodiment show an artificial finger joint comprising a convex joint head [0030] 1 and a concave joint shell 2 which can be fastened independently of one another with a respective shaft 3, 4 at a bone end 5, 6 and can be moved in an articulation plane from an extension position 7 with parallel shaft axes 8, 9 into a hyperextension position 10 or into an articulation end position 11. A guide pin 12 projects from the joint shell 2 in the direction of the shaft axis of the latter and protrudes into a pocket 13 of the joint head 1, with the pocket 13 having a first abutment 16 for the guide pin 12 in the hyperextension position 10. A second abutment 17 between the joint shell 2 and the joint head prevents in the hyperextension position 10 a tilting of the guide pin 12 and the shaft 4 of the joint shell 2 about the first abutment 16.
  • In the following, identical reference symbols are used for identical functions. [0031]
  • In the exemplary embodiment of FIGS. 1, 2 and [0032] 3 the joint head 1 is anchored with a shaft 3 in a bone end 5. The anchoring is assisted through ribs 24 at the shaft 3. The joint head 1 is provided with a spherical bearing surface 26, the center 19 of which forms a point of rotation on the shaft axis 8. The side surfaces of the joint head 1 have a flattening 27. A pocket 13 with lateral guide cheeks 14, 15 is worked in into the joint head 1. In the hyperextension position 10 of the joint shell 2 the pocket 13 forms a first abutment 16 for the guide pin 12, which projects from the joint shell 2 in the direction of its shaft axis 9, and in the articulation end position 11 a third abutment 21 for the guide pin 12. The pocket 13 is undercut and has an extension 20. Within this extension 20 the guide pin 12, which is prolonged beyond the point of rotation 19, can co-rotate and encounters in the hyperextension position 10 a second abutment 17, which is rotated by 180° with respect to the first abutment 16 and prevents a tilting of the guide pin 12 and its associated shaft 4 about the first abutment 16. The situation is similar in the articulation end position, in which a fourth abutment 22 prevents a tilting about the third abutment 21. The joint shell 2 rotates with its concave bearing shell about the center 19. It is likewise anchored with a shaft 4 and with ribs 24 in a bone end 6. The joint shell can be moved out of an extension position, in which both shaft axes align with one another in their projection (FIG. 1) by a partial angle α1 into a hyperextension position 10 or by a partial angle α2 into an articulation end position 11, with the movement in each case being limited by two cooperating abutments 16, 17; 21, 22. The pivotal angle α of the joint corresponds to the sum of α1 and α2 and amounts to for example 110°.
  • In FIG. 3 the cross-section [0033] 25 of a rectangular guide pin 12 is drawn in which has a total clearance 28 from the guide cheeks 14, 15 of the pocket 13 which corresponds to 40% of the shaft thickness. Nevertheless the rectangular cross-section prevents with a diagonal, which is longer than the spacing of the guide cheeks 14, 15, an extreme rotation of the guide pin 12 and of its associated shaft 4 about the shaft axis 9.
  • The manufacture of the extension [0034] 20 of the pocket 13 can be carried out in different ways. In a guide pin 12 with round cross-section the extension 20 can be pre-bored and then machined to a finish with a finger milling machine. Another possibility consists in securing one guide cheek 14 to the joint head 1 only after the production of the extension 20. A further possibility is shown in FIGS. 4, 5 and 6.
  • In FIGS. 4, 5 and [0035] 6 the joint head 1 is conceived as an injection molded part. The shaft 3, the ribs 24 and the joint head 1 are provided in a single piece. The pocket 13 and its extension 20 are dimensioned without undercutting for a mold removal in the direction of the shaft axis 8. The first abutment 16 and the third abutment 21 are formed by boundaries of the pocket 13. The second abutment 17 for the hyperextension position 10 is formed by a subsequently introduced bolt 23. Likewise the fourth abutment 22 for the articulation end position 11 is formed by a subsequently introduced bolt 23. With two bolts 23 all abutments 16, 21, 17, 22 could in principle be realized with the bolts; but then however the lever arm for a torque which is to be taken up becomes shorter. The joint shell 2 with the guide pin 12 can be formed the same as in FIG. 1.
  • In FIGS. 7, 8 and [0036] 9 an injection molded part without bolts is proposed for the joint head 1, with a fourth abutment being omitted. A slit-shaped extension 20 of the pocket 13 forms an undercutting in the direction of the extension 7 with a second abutment 17 for the hyperextension position 10, with a mold removal being possible in the direction of the hyperextension. The guide pin 12, which projects beyond the point of rotation 19, has been reduced in width at its tip in order to be able to engage into the slit-shaped extension 20 and to encounter the second abutment 17 in the hyperextension position, whereas the first abutment 16 is formed by the shoulders for the wider part of the guide pin 12 which remain adjacently to the slit. In the normally more weakly stressed articulation end position 11 there is a third abutment 21, which does not completely exclude a tilting about this abutment. The securing elements, the shafts 3, 4 and the ribs 24 as well as the outer dimensions are formed as in FIG. 1.
  • A further embodiment for an artificial finger joint is shown in FIGS. [0037] 10 to 14. A joint head 1 with a shaft 3 having a shaft axis 8 and with ribs 24 is provided. It forms a spherical bearing surface 26 with a point of rotation 19. The side surfaces are provided with flattenings 27. A pocket 13, which reaches from the hyperextension position 10 up to the articulation end position 11, forms lateral guide cheeks 15 and a first abutment 16 and a third abutment 21 for a guide pin 12, which protrudes out of the joint shell 2 into the pocket 13. FIG. 12 shows a plastic injection molded part which can be pushed on onto a joint shell 2 in FIG. 13 as a plastic bearing surface 29. The thus pushed together joint shell 2 (FIG. 14) can be anchored with a shaft 4 and ribs 24. The guide pin 12 projects in the direction of the shaft axis 9 of the joint shell 2. A cap 18 is formed on at the actual bearing shell in the direction of the hyperextension. In the hyperextension position 10 (FIG. 10) of the bearing shell 2 and the joint head 1 this cap 18 projects by an amount S beyond the point of rotation 19 in its projection onto the shaft axis 8 of the joint head and encounters at the outer contour of the joint head a second abutment 17, which prevents a tilting about the first abutment 16. The joint shell 2 can be pivoted out of an extension position 7, in which the projected shaft ends 8, 9 coincide, by a partial angle α1 into the hyperextension position 10 or by a partial angle α2 into the articulation end position 11. The sum of the two partial angles lies between 100° and 110°. The cap 18 is cut off laterally in analogy with the flattenings 27. This has the advantage that the lateral ligaments can form a rotational securing about the shaft axis 9.

Claims (12)

1. Artificial finger joint comprising a convex joint head (1) and comprising a concave joint shell which can be fastened independently of one another with a respective shaft (3, 4) in a bone end (5, 6) and which can be moved in an articulation plane from an extension position (7) with parallel shaft axes (8, 9) into a hyperextension position (10) or into an articulation end position (11), characterized in that a guide pin (12) projects out of the joint shell (2) in the direction of the shaft axis (9) of the latter and protrudes into a pocket (13) of the joint head (1), with the pocket (13) having a first abutment (16) for the guide pin (12) in the hyperextension position (10); and in that a second abutment (17) is present between the joint shell (2) and the joint head (1) in the hyperextension position (10) and prevents a tilting of the guide pin (12) and the shaft (4) of the joint shell (2) about the first abutment (16).
2. Artificial finger joint in accordance with
claim 1
, characterized in that the pocket (13) permits a pivotal angle α between 80° and 130° between the hyperextension position (10) and the articulation end position (11).
3. Artificial finger joint in accordance with any one of the claims 1 or 2, characterized in that the concave joint shell (2) has in the direction of the hyperextension position a formed on cap (18) which when the hyperextension position (10) is reached encounters a second abutment (17) at the joint head which is displaced by a distance S from a point of rotation (19) in the joint head in the direction towards the shaft (3) of the latter.
4. Artificial finger joint in accordance with any one of the claims 1 or 2, characterized in that beyond a point of rotation (19) the pocket (13) has an undercut extension (20) with a second abutment (17) which is arranged oppositely to the first abutment (16); and in that the guide pin (12) protrudes outwardly beyond the point of rotation (19) into the undercut extension (20).
5. Artificial finger joint in accordance with any one of the
claims 1
to
4
, characterized in that the guide pin (12) has a round cross-section and a lateral total clearance (28) of more than 5% of its diameter from guide cheeks (14, 15) of the pocket (13).
6. Artificial finger joint in accordance with any one of the
claims 1
to
4
, characterized in that the guide pin (12) has a rectangular cross-section (25) and has a lateral total clearance (28) of more than 5% of its width from guide cheeks (14, 15) of the pocket (13).
7. Artificial finger joint in accordance with
claim 6
, characterized in that the rectangular cross-section has a diagonal which is longer than the spacing of the guide cheeks (14, 15) in order to achieve a rotational securing.
8. Artificial finger joint in accordance with any one of the
claims 1
to
7
, characterized in that the convex bearing surface of the joint head (1) and the concave bearing surface of the joint shell (2) are congruent in the hyperextension position; and in that the curvature of the convex bearing surface of the joint head (1) increases in the direction of the articulation.
9. Artificial finger joint in accordance with any one of the
claims 1
to
8
, characterized in that a third abutment (21) in the pocket (13) restricts the movement of the guide pin (12) in the articulation end position (11); and in that a fourth abutment (22) is present in the pocket (13) which prevents a tilting of the guide pin (12) and its shaft (4) about the third abutment (21).
10. Artificial finger joint in accordance with any one of the
claims 1
to
9
, characterized in that abutments (16, 17 b, 21, 22) are formed as bolts (23) which are subsequently fastened into the pocket (13).
11. Artificial finger joint in accordance with any one of the
claims 1
to
10
, characterized in that the joint head (1) and the joint shell (2) with their shafts (3, 4) consist of metal.
12. Artificial finger joint in accordance with any one of the
claims 1
to
11
, characterized in that the joint head (1) or the joint shell (2) have articulation surfaces which consist of plastic (29).
US09/813,441 2000-03-21 2001-03-20 Artificial finger joint Active US6423097B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP00810236 2000-03-21
EP00810236 2000-03-21
EP00810236.0 2000-03-21

Publications (2)

Publication Number Publication Date
US20010025199A1 true US20010025199A1 (en) 2001-09-27
US6423097B2 US6423097B2 (en) 2002-07-23

Family

ID=8174606

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/813,441 Active US6423097B2 (en) 2000-03-21 2001-03-20 Artificial finger joint

Country Status (4)

Country Link
US (1) US6423097B2 (en)
AT (1) AT274884T (en)
DE (1) DE50103437D1 (en)
ES (1) ES2222970T3 (en)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6593451B1 (en) 2002-10-09 2003-07-15 Pragtech, Inc. Method of processing polyacrylonitrile
US20040070107A1 (en) * 2002-10-09 2004-04-15 Pragtech, Inc. Method of making lubricious polyacrylonitrile artificial joint components and resulting product
US20050085921A1 (en) * 2003-07-22 2005-04-21 Amitava Gupta Prosthetic wrist implant
US20060074492A1 (en) * 2004-09-09 2006-04-06 Theo Frey Endoprosthesis for a metatarsophalangeal joint
US20080097616A1 (en) * 2001-01-29 2008-04-24 Zimmer Technology, Inc. Constrained prosthetic knee with rotating bearing
US20080177262A1 (en) * 2005-04-14 2008-07-24 Marc Augoyard Intramedullar Osteosynthetic Device of Two Bone Parts, In Particular of the Hand and/or Foot
US20080249631A1 (en) * 2005-11-17 2008-10-09 Bioprofile Implant, more particularly partial ulnar head implant
EP2014263A1 (en) * 2007-07-09 2009-01-14 Zrinski AG Joint prosthetic with an anti-twist device
US20090281631A1 (en) * 2008-05-09 2009-11-12 Remi Sciences, Inc. Ulnar head prosthesis system
US20100131014A1 (en) * 2007-03-20 2010-05-27 Memometal Technologies Osteosynthesis device
US20100161068A1 (en) * 2007-07-09 2010-06-24 Zrinski Ag Prosthesis for part of a joint, with an expandable shaft
US20100217402A1 (en) * 2007-10-18 2010-08-26 Inbone Technologies, Inc. Fibular stiffener and bony defect replacer
US20100256770A1 (en) * 2007-11-07 2010-10-07 Gs Development Ab Artificial joint
US20110144644A1 (en) * 2008-09-09 2011-06-16 Memometal Technologies Resorptive intramedullary implant between two bones or two bone fragments
US8052755B2 (en) * 2008-05-09 2011-11-08 Remi Sciences, Inc. Ulnar head prosthesis system
US20130103158A1 (en) * 2011-09-21 2013-04-25 Linares Medical Devices, Llc Implantable elbow joint assembly with spherical inter-support
USRE44476E1 (en) 2001-01-29 2013-09-03 Zimmer, Inc. Constrained prosthetic knee with rotating bearing
US20140316530A1 (en) * 2013-04-23 2014-10-23 Bespa, Inc Metatarsalphalangeal Joint Apprartus and Method
US20150150607A1 (en) * 2012-05-22 2015-06-04 Lifenet Health Cortical Bone Pin
US20150182340A1 (en) * 2012-08-06 2015-07-02 Universite de Bordeaux Condylar prosthesis for a temporo-mandibular joint
US9078758B2 (en) 2011-05-12 2015-07-14 Howmedica Osteonics Corp. Wrist implant for carpal hemiarthroplasty
US9474561B2 (en) 2013-11-19 2016-10-25 Wright Medical Technology, Inc. Two-wire technique for installing hammertoe implant
US9498266B2 (en) 2014-02-12 2016-11-22 Wright Medical Technology, Inc. Intramedullary implant, system, and method for inserting an implant into a bone
US9498273B2 (en) 2010-06-02 2016-11-22 Wright Medical Technology, Inc. Orthopedic implant kit
US9504582B2 (en) 2012-12-31 2016-11-29 Wright Medical Technology, Inc. Ball and socket implants for correction of hammer toes and claw toes
US9545274B2 (en) 2014-02-12 2017-01-17 Wright Medical Technology, Inc. Intramedullary implant, system, and method for inserting an implant into a bone
US9549826B2 (en) 2004-12-01 2017-01-24 Mayo Foundation For Medical Research And Education Sigmoid notch implant
US9603643B2 (en) 2010-06-02 2017-03-28 Wright Medical Technology, Inc. Hammer toe implant with expansion portion for retrograde approach
US9724139B2 (en) 2013-10-01 2017-08-08 Wright Medical Technology, Inc. Hammer toe implant and method
US9724140B2 (en) 2010-06-02 2017-08-08 Wright Medical Technology, Inc. Tapered, cylindrical cruciform hammer toe implant and method
US9757168B2 (en) 2015-03-03 2017-09-12 Howmedica Osteonics Corp. Orthopedic implant and methods of implanting and removing same
US9808296B2 (en) 2014-09-18 2017-11-07 Wright Medical Technology, Inc. Hammertoe implant and instrument
US10080597B2 (en) 2014-12-19 2018-09-25 Wright Medical Technology, Inc. Intramedullary anchor for interphalangeal arthrodesis

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPQ282099A0 (en) * 1999-09-14 1999-10-07 Krishnan, Jeganath Metacarpo phalangeal joint prosthesis
ES2201917B1 (en) * 2002-08-14 2005-06-01 Mario Campo Martinez Metacarpophalangeal joint endoprosthesis.
DE10317766A1 (en) * 2003-04-15 2004-11-04 Siebel, Thomas, Dr. hip prosthesis
US7025789B2 (en) * 2003-04-29 2006-04-11 The University Of Hong Kong Prosthetic device and method for total joint replacement in small joint arthroplasty
ES2276180T3 (en) * 2004-02-25 2007-06-16 Zimmer Gmbh Partial pelvic endoprosthesis.
US7951198B2 (en) * 2005-05-10 2011-05-31 Acumed Llc Bone connector with pivotable joint
US8012214B2 (en) * 2005-09-27 2011-09-06 Randall Lane Acker Joint prosthesis
FR2940760B1 (en) 2009-01-08 2010-12-31 Memometal Technologies Orthopedic implant for digital arthroplasty
WO2010129880A2 (en) * 2009-05-07 2010-11-11 Smith & Nephew, Inc. Modular trial heads for a prosthetic
US9649194B2 (en) * 2009-07-10 2017-05-16 Peter Forsell Hip joint device
US9072564B2 (en) 2010-06-02 2015-07-07 Wright Medical Technology, Inc. Hammer toe implant and method
US9114018B2 (en) 2011-09-28 2015-08-25 Linares Medical Devices, Llc Implantable thumb joint assembly with spherical inter-support
US9132019B2 (en) 2012-10-22 2015-09-15 Andrew C. Weems Metacarpal-phalangeal prosthesis
FR3021524A1 (en) 2014-06-02 2015-12-04 Small Bone Innovations Internat Metacarpian anchoring rod, in particular for a trapezo-metacarpian prosthesis
ES2653538T3 (en) * 2015-02-04 2018-02-07 Alessandro Melozzi Enhanced hip prosthesis
US10098749B2 (en) 2015-07-31 2018-10-16 Ryan A. Jefferis Proximal interphalangeal joint prothesis

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3506982A (en) * 1965-06-21 1970-04-21 Cleveland Clinic Endoprosthetic joints
US3991425A (en) * 1975-11-20 1976-11-16 Minnesota Mining And Manufacturing Company Prosthetic bone joint devices
US4131957A (en) * 1977-08-12 1979-01-02 General Atomic Company Ball and socket prosthetic joint
US4231121A (en) 1979-07-05 1980-11-04 Wright Dow Corning Metacarpal-phalangeal prosthesis
JPS6446019U (en) 1987-09-18 1989-03-22
FR2620932B1 (en) * 1987-09-28 1997-03-07
DE4337922B4 (en) 1993-11-06 2004-10-07 Jakob, Charles B. joint prosthesis
US5674297A (en) 1995-12-08 1997-10-07 Lane; Lewis B. Metacarpophalangeal prosthesis

Cited By (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8888857B2 (en) 2001-01-29 2014-11-18 Zimmer, Inc. Constrained prosthetic knee with rotating bearing
USRE44476E1 (en) 2001-01-29 2013-09-03 Zimmer, Inc. Constrained prosthetic knee with rotating bearing
US8268006B2 (en) 2001-01-29 2012-09-18 Zimmer, Inc. Constrained prosthetic knee with rotating bearing
US20080097616A1 (en) * 2001-01-29 2008-04-24 Zimmer Technology, Inc. Constrained prosthetic knee with rotating bearing
US20040070107A1 (en) * 2002-10-09 2004-04-15 Pragtech, Inc. Method of making lubricious polyacrylonitrile artificial joint components and resulting product
US20040195727A1 (en) * 2002-10-09 2004-10-07 Pragtech, Inc. Knee Meniscus implant
US6593451B1 (en) 2002-10-09 2003-07-15 Pragtech, Inc. Method of processing polyacrylonitrile
US20120150308A1 (en) * 2003-07-22 2012-06-14 Avanta Orthopaedics, Llc Prosthetic wrist implant
US8758445B2 (en) * 2003-07-22 2014-06-24 Avanta Orthopaedics, Llc Prosthetic wrist implant
US20050085921A1 (en) * 2003-07-22 2005-04-21 Amitava Gupta Prosthetic wrist implant
US9233004B2 (en) 2003-07-22 2016-01-12 Howmedica Osteonics Corp. Prosthetic wrist implant
US7625408B2 (en) * 2003-07-22 2009-12-01 Avanta Orthopaedics, Llc Prosthetic wrist implant
US8118876B2 (en) 2003-07-22 2012-02-21 Avanta Orthopaedics, Llc Prosthetic wrist implant
US20060074492A1 (en) * 2004-09-09 2006-04-06 Theo Frey Endoprosthesis for a metatarsophalangeal joint
US9549826B2 (en) 2004-12-01 2017-01-24 Mayo Foundation For Medical Research And Education Sigmoid notch implant
US10022167B2 (en) 2005-04-14 2018-07-17 Stryker European Holdings I, Llc Method of osteosyntheses or arthrodesis of two-bone parts, in particular of the hand and / or foot
US20080177262A1 (en) * 2005-04-14 2008-07-24 Marc Augoyard Intramedullar Osteosynthetic Device of Two Bone Parts, In Particular of the Hand and/or Foot
US9492215B2 (en) 2005-04-14 2016-11-15 Stryker European Holdings I, Llc Method of osteosyntheses or arthrodeses of two- bone parts, in particular of the hand and / or foot
US9283007B2 (en) 2005-04-14 2016-03-15 Stryker European Holdings I, Llc Device for osteosyntheses or arthrodeses of two- bone parts, in particular of the hand and / or foot
US8475456B2 (en) 2005-04-14 2013-07-02 Memometal Technologies Intramedullar osteosynthetic device of two bone parts, in particular of the hand and/or foot
US20080249631A1 (en) * 2005-11-17 2008-10-09 Bioprofile Implant, more particularly partial ulnar head implant
US8088168B2 (en) * 2005-11-17 2012-01-03 Tornier Sas Implant, more particularly partial ulnar head implant
US9839453B2 (en) 2007-03-20 2017-12-12 Stryker European Holdings I, Llc Osteosynthesis device
US9161789B2 (en) 2007-03-20 2015-10-20 Memometal Technologies Osteosynthesis device
US20100131014A1 (en) * 2007-03-20 2010-05-27 Memometal Technologies Osteosynthesis device
US8394097B2 (en) 2007-03-20 2013-03-12 Memometal Technologies Osteosynthesis device
US20100161068A1 (en) * 2007-07-09 2010-06-24 Zrinski Ag Prosthesis for part of a joint, with an expandable shaft
US20100137994A1 (en) * 2007-07-09 2010-06-03 Nicola Lindner Prosthesis for part of a joint, with an anti-twist element
WO2009007805A1 (en) * 2007-07-09 2009-01-15 Zrinski Ag Prosthesis for part of a joint, with an anti-twist element
US8491663B2 (en) 2007-07-09 2013-07-23 Zrinski Ag Prosthesis for part of a joint, with an anti-twist element
EP2014263A1 (en) * 2007-07-09 2009-01-14 Zrinski AG Joint prosthetic with an anti-twist device
US20100217402A1 (en) * 2007-10-18 2010-08-26 Inbone Technologies, Inc. Fibular stiffener and bony defect replacer
US8110006B2 (en) * 2007-10-18 2012-02-07 Inbone Technologies, Inc. Fibular stiffener and bony defect replacer
US8449620B2 (en) * 2007-11-07 2013-05-28 Gs Development Ab Artificial joint
US20100256770A1 (en) * 2007-11-07 2010-10-07 Gs Development Ab Artificial joint
US7875082B2 (en) * 2008-05-09 2011-01-25 Remi Sciences, Inc. Ulnar head prosthesis system
US20090281631A1 (en) * 2008-05-09 2009-11-12 Remi Sciences, Inc. Ulnar head prosthesis system
US8052755B2 (en) * 2008-05-09 2011-11-08 Remi Sciences, Inc. Ulnar head prosthesis system
US8414583B2 (en) 2008-09-09 2013-04-09 Memometal Technologies Resorptive intramedullary implant between two bones or two bone fragments
US10383671B2 (en) 2008-09-09 2019-08-20 Stryker European Holdings I, Llc Resorptive intramedullary implant between two bones or two bone fragments
US20110144644A1 (en) * 2008-09-09 2011-06-16 Memometal Technologies Resorptive intramedullary implant between two bones or two bone fragments
US9168074B2 (en) 2008-09-09 2015-10-27 Memometal Technologies Resorptive intramedullary implant between two bones or two bone fragments
US9498273B2 (en) 2010-06-02 2016-11-22 Wright Medical Technology, Inc. Orthopedic implant kit
US9949775B2 (en) 2010-06-02 2018-04-24 Wright Medical Technology, Inc. Hammer toe implant with expansion portion for retrograde approach
US9877753B2 (en) 2010-06-02 2018-01-30 Wright Medical Technology, Inc. Orthopedic implant kit
US9603643B2 (en) 2010-06-02 2017-03-28 Wright Medical Technology, Inc. Hammer toe implant with expansion portion for retrograde approach
US9724140B2 (en) 2010-06-02 2017-08-08 Wright Medical Technology, Inc. Tapered, cylindrical cruciform hammer toe implant and method
US9078758B2 (en) 2011-05-12 2015-07-14 Howmedica Osteonics Corp. Wrist implant for carpal hemiarthroplasty
US8840673B2 (en) * 2011-09-21 2014-09-23 Linares Medical Devices, Llc Implantable elbow joint assembly with spherical inter-support
US9114015B2 (en) 2011-09-21 2015-08-25 Linares Medical Devices, Llc Implantable elbow joint assembly with spherical inter-support
US20130103158A1 (en) * 2011-09-21 2013-04-25 Linares Medical Devices, Llc Implantable elbow joint assembly with spherical inter-support
US20150150607A1 (en) * 2012-05-22 2015-06-04 Lifenet Health Cortical Bone Pin
US20150182340A1 (en) * 2012-08-06 2015-07-02 Universite de Bordeaux Condylar prosthesis for a temporo-mandibular joint
US9517135B2 (en) * 2012-08-06 2016-12-13 Universite de Bordeaux Condylar prosthesis for a temporo-mandibular joint
US9504582B2 (en) 2012-12-31 2016-11-29 Wright Medical Technology, Inc. Ball and socket implants for correction of hammer toes and claw toes
US10278828B2 (en) 2012-12-31 2019-05-07 Wright Medical Technology, Inc. Ball and socket implants for correction of hammer toes and claw toes
US20140316530A1 (en) * 2013-04-23 2014-10-23 Bespa, Inc Metatarsalphalangeal Joint Apprartus and Method
WO2014176103A3 (en) * 2013-04-23 2015-05-07 Bespa, Inc. Metatarsalphalangeal joint apparatus and method
US9724139B2 (en) 2013-10-01 2017-08-08 Wright Medical Technology, Inc. Hammer toe implant and method
US9474561B2 (en) 2013-11-19 2016-10-25 Wright Medical Technology, Inc. Two-wire technique for installing hammertoe implant
US9675392B2 (en) 2013-11-19 2017-06-13 Wright Medical Technology, Inc. Two-wire technique for installing hammertoe implant
US9545274B2 (en) 2014-02-12 2017-01-17 Wright Medical Technology, Inc. Intramedullary implant, system, and method for inserting an implant into a bone
US9498266B2 (en) 2014-02-12 2016-11-22 Wright Medical Technology, Inc. Intramedullary implant, system, and method for inserting an implant into a bone
US9808296B2 (en) 2014-09-18 2017-11-07 Wright Medical Technology, Inc. Hammertoe implant and instrument
US10299840B2 (en) 2014-09-18 2019-05-28 Wright Medical Technology, Inc. Hammertoe implant and instrument
US10080597B2 (en) 2014-12-19 2018-09-25 Wright Medical Technology, Inc. Intramedullary anchor for interphalangeal arthrodesis
US9757168B2 (en) 2015-03-03 2017-09-12 Howmedica Osteonics Corp. Orthopedic implant and methods of implanting and removing same

Also Published As

Publication number Publication date
AT274884T (en) 2004-09-15
DE50103437D1 (en) 2004-10-07
ES2222970T3 (en) 2005-02-16
US6423097B2 (en) 2002-07-23

Similar Documents

Publication Publication Date Title
EP0069683B1 (en) Full knee-joint prosthesis
US8795380B2 (en) Orthopaedic knee prosthesis having controlled condylar curvature
US5928285A (en) Orthopaedic implant having an articulating surface with a conforming and translational surface
CA2533473C (en) Intervertebral implant comprising dome-shaped joint surfaces
ES2263923T3 (en) Posterior knee prosthesis constriction in varus-valgus.
US2696817A (en) Prosthetic elbow joint
AU2009219896B2 (en) Handle for a surgical instrument and surgical instrument assembly
US6818019B2 (en) Joint prosthesis
ES2213814T3 (en) Knee joint prosthesis.
US4249270A (en) Endoprosthesis for a knee joint
US8282649B2 (en) Extended articulation orthopaedic implant
AU2004200394B2 (en) Modular bone implant, tool, and method
US5879401A (en) Acetabular trial
US20110137316A1 (en) Total Knee Arthroplasty Method
US4955919A (en) Multi-component joint prosthesis with increased wall flexibility facilitating component assembly
EP1413264A2 (en) Tibial knee component with a mobile bearing
US6132469A (en) Acetabular liner extractor
EP1317911B1 (en) Elbow prosthesis
JP4986846B2 (en) Intervertebral disc prosthesis
US5951604A (en) Distal radioulnar joint prosthesis
JP2012508044A (en) Intervertebral interbody spacer and connecting plate assembly
EP0186471B1 (en) Knee prosthesis
JP3411786B2 (en) Tibial component of the replacement artificial knee
AU774707B2 (en) Anterior impacted bone graft and driver instruments
EP1633286B1 (en) Prosthetic device for total joint replacement in small joint arthroplasty

Legal Events

Date Code Title Description
AS Assignment

Owner name: SULZER ORTHOPEDICS LTD., SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:RAUSCHER, MARKUS;REEL/FRAME:011642/0251

Effective date: 20001222

STCF Information on status: patent grant

Free format text: PATENTED CASE

FPAY Fee payment

Year of fee payment: 4

AS Assignment

Owner name: ZIMMER GMBH, SWITZERLAND

Free format text: TRANSFORMATION WITHOUT LIQUIDATION;ASSIGNOR:SULZER ORTHOPEDICS LTD;REEL/FRAME:018515/0289

Effective date: 20040630

FPAY Fee payment

Year of fee payment: 8

FPAY Fee payment

Year of fee payment: 12