DE4441870C1 - Extractor for hip joints - Google Patents

Extractor for hip joints

Info

Publication number
DE4441870C1
DE4441870C1 DE4441870A DE4441870A DE4441870C1 DE 4441870 C1 DE4441870 C1 DE 4441870C1 DE 4441870 A DE4441870 A DE 4441870A DE 4441870 A DE4441870 A DE 4441870A DE 4441870 C1 DE4441870 C1 DE 4441870C1
Authority
DE
Germany
Prior art keywords
collar
slot
ring
shaped recess
cone
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.)
Expired - Fee Related
Application number
DE4441870A
Other languages
German (de)
Inventor
Wolfgang Zach
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE4441870A priority Critical patent/DE4441870C1/en
Priority to DE9418861U priority patent/DE9418861U1/en
Application granted granted Critical
Publication of DE4441870C1 publication Critical patent/DE4441870C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • A61F2/02—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
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4607—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of hip femoral endoprostheses
    • 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
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4612—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of shoulders
    • 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
    • A61F2/4637—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis
    • 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
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30112—Rounded shapes, e.g. with rounded corners
    • A61F2002/30131—Rounded shapes, e.g. with rounded corners horseshoe- or crescent- or C-shaped or U-shaped
    • 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
    • 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
    • A61F2002/30339—Double cones, i.e. connecting element having two conical connections, one at each of its opposite ends
    • 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
    • A61F2002/30574—Special structural features of bone or joint prostheses not otherwise provided for with an integral complete or partial collar or flange
    • 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
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3625—Necks
    • 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
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3625—Necks
    • A61F2002/3631—Necks with an integral complete or partial peripheral collar or bearing shoulder at its base
    • 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
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/365—Connections of heads to necks
    • 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
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3652—Connections of necks to shafts
    • 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
    • A61F2/40—Joints for shoulders
    • A61F2/4014—Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral shafts
    • A61F2002/4037—Connections of heads to necks
    • 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
    • A61F2/40—Joints for shoulders
    • A61F2/4014—Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral shafts
    • A61F2002/4044—Connections of necks to shafts
    • 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
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2002/4619—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof for extraction
    • 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
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2002/4625—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof with relative movement between parts of the instrument during use
    • A61F2002/4627—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof with relative movement between parts of the instrument during use with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument
    • 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
    • A61F2/4637—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis
    • A61F2002/4641—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis for disconnecting
    • 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
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A61F2230/0013—Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped

Abstract

The extractor has a U-shaped grip (1) which is threaded by two adjusting screws (5) and with the free ends of the screws braced against the insides of thrust rings (6). Each pressure ring has a shaped recess to locate the bearing pivot (17) and a lip (3) which grips into a slot around the neck of the bearing. The screw fasteners are tightened to separate the ball joint (17) from its mounting. The ball joint mounting can be a simple conical joint (16) which is released through axial pressure on the ball joint w.r.t. the ball joint mounting. The U-shaped grip has thrust ring and a correspondingly shaped housing for the thrust ring. After fitting the extractor the thrust ring and housing are rotated at 180 deg. to each other to lock onto the joint mounting.

Description

Die Erfindung betrifft eine Ausziehvorrichtung zum Entfernen von Doppelkonus-Adapter oder Steckkugelkopf bei Schaftendopro­ thesen mit Innen- oder Außenkonus am proximalen Ende gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a pull-out device for removal of double cone adapter or plug-in ball head at Schaftsdopro theses with inner or outer cone at the proximal end according to the generic term of claim 1.

Bekannte Vorrichtungen, in Gestalt eines Trennhebels oder Mei­ ßels mit gabelförmiger Keilspitze haben den Nachteil, daß die aufzubringenden Hebel- oder Schlagkräfte als Querkräfte und Biegemomente auf Knochen und Prothese einwirken.Known devices, in the form of a separating lever or Mei Chisels with fork-shaped chisel tips have the disadvantage that the lever or impact forces to be applied as transverse forces and Apply bending moments to the bone and prosthesis.

Beschädigung von Knochen, Prothese, Adapter und Kugelkopf müs­ sen oftmals in Kauf genommen werden. Darüberhinaus ist eine Verletzung des umliegenden Gewebes durch Abgleiten oder Bruch der empfindlichen Keilspitzen nicht auszuschließen.Bone, prosthesis, adapter and ball head must be damaged are often accepted. Furthermore, there is one Injury to the surrounding tissue from slipping or breaking sensitive wedge tips cannot be excluded.

Die Aufgabe der Erfindung besteht darin, die Ausziehvorrich­ tung der im Oberbegriff des Anspruches 1 angegebenen Art in­ soweit zu verbessern, daß ein Entfernen von Adapter bzw. Kugel­ kopf querkraft- und biegemomentfrei, ohne den Sitz der Prothese zu beeinträchtigen, erfolgen kann.The object of the invention is the pull-out device device of the type specified in the preamble of claim 1 To be improved to the extent that removal of the adapter or ball Head free of lateral force and bending moment, without the seat of the prosthesis can affect.

Darüber hinaus soll sie kompakt ausgebildet und einfach im Auf­ bau sein, so daß eine verletzungsfreie sichere Handhabung auch bei beengten Platzverhältnissen gewährleistet ist.In addition, it should be compact and easy to open be built so that safe, injury-free handling too is guaranteed in confined spaces.

Zur Lösung dieser Aufgabe sind bei der Erfindung die im kenn­ zeichnenden Teil des Anspruches 1 angegebenen Merkmale vorge­ sehen, wobei noch in den dem Anspruch 1 folgenden Ansprüchen für die Aufgabenlösung vorteilhafte und förderliche Weiterbil­ dungen beansprucht sind.To solve this problem are in the invention in the kenn drawing part of claim 1 specified features see, still in the claims following claim 1 Advantageous and beneficial further training for the task solution applications are claimed.

Die Ausziehvorrichtung besteht also aus einem Spannring mit ei­ ner schlitzförmigen Aussparung und zwei quer zur Aussparung ge­ genüberliegend angeordneten Spannschrauben, sowie einem Druck­ ring mit ebenfalls schlitzförmiger Aussparung und einem Füh­ rungsbund zum Einlegen des vorgenannten Spannringes.The pull-out device consists of a clamping ring with egg ner slot-shaped recess and two across the recess opposite clamping screws, as well as a pressure ring with a slot-shaped recess and a guide covenant for inserting the aforementioned clamping ring.

Die schlitzförmige Aussparung des Spannringes besteht im Quer­ schnitt aus einer trichterartigen Erweiterung sowie einem um­ laufenden Steg, dessen lichte Weite um ein Spiel größer als der größte Durchmesser des Adapter- bzw. Prothesenkonus ist und dessen Dicke um ein Spiel kleiner ist als die Breite des Spaltes zwischen dem Kragenende der Prothese und dem Bund des Doppelko­ nus-Adapters bzw. des Steckkugelkopfes. Die trichterartige Er­ weiterung ermöglicht auch bei Kurzhals-Steckkugelköpfen ein kol­ lisionsfreies Aufstecken der Vorrichtung.The slot-shaped recess of the clamping ring is in the cross cut out of a funnel-like extension and one running jetty, the clear width of which is a game larger than that largest diameter of the adapter or prosthesis cone is and whose thickness is one game less than the width of the gap between the collar end of the prosthesis and the collar of the Doppelko adapter or the plug-in ball head. The funnel-like he Extension also allows a col with short-neck plug-in ball heads lection-free attachment of the device.

Die schlitzförmige Aussparung des Druckringes ist um ein Spiel größer als der größte Durchmesser des Kragenendes der Prothese und der Innendurchmesser des Führungsbundes ist um ein Spiel grö­ ßer als der Außendurchmesser des Spannringes. The slot-shaped recess of the pressure ring is a game larger than the largest diameter of the collar end of the prosthesis and the inside diameter of the guide collar is one game larger ß than the outer diameter of the clamping ring.  

Zum Ausziehen des Doppelkonus-Adapters wird der Spannring in den Führungsbund des Druckringes so eingelegt, daß die schlitzförmi­ gen Aussparungen beider Teile deckungsgleich übereinanderliegen. Anschließend werden Druck- und Spannring gleichzeitig auf das Kragenende bzw. den Spalt zwischen Kragenende und Adapterbund gesteckt, und der Spannring um ca. 180° gegenüber dem Druckring radial gedreht. Die dadurch erreichte Verriegelung beider Teile mit dem Doppelkonus-Adapter gestattet ein sicheres und problem­ loses Durchführen des Ausziehvorganges. Durch das wechselseitige gleichmäßige Anziehen der Spannschrauben wird der Druckring ge­ gen den Kragen der Prothese und der umlaufende Steg des Spann­ ringes gegen den Bund des Adapters gepreßt und somit ein quer­ kraft-, stoß- und biegemomentfreies Ausziehen des Adapters er­ reicht.To pull out the double cone adapter, the clamping ring is inserted into the Guide collar of the pressure ring inserted so that the slot-shaped cutouts of both parts are congruent one above the other. Then the pressure and tension ring are simultaneously on the Collar end or the gap between the collar end and the adapter collar inserted, and the clamping ring by approx. 180 ° in relation to the pressure ring turned radially. The locking of both parts achieved thereby with the double cone adapter allows a safe and problem loose execution of the extraction process. Through the mutual evenly tightening the clamping screws, the pressure ring is ge against the collar of the prosthesis and the circumferential bridge of the instep ring pressed against the collar of the adapter and thus a cross pulling the adapter free of force, shock and bending moment enough.

Das Aus- bzw. Abziehen eines Steckkugelkopfes erfolgt sinngemäß der oben beschriebenen Vorgehensweise. Beschädigungen von Kno­ chen, Prothese, Adapter oder Steckkugelkopf sind hierbei eben­ falls nahezu ausgeschlossen.A plug-in ball head is extracted or removed analogously the procedure described above. Damage to Kno Chen, prosthesis, adapter or plug-in ball head are even here if almost impossible.

Die kompakte Bauweise und sichere Fixierung der Vorrichtung er­ laubt auch im engen Wundbereich eine problemlose Handhabung und gute Zugänglichkeit.The compact design and secure fixation of the device he allows easy handling and even in narrow wound areas good accessibility.

Die erfindungsgemäße Vorrichtung ist auf Grund ihrer einfachen Teilestruktur kostengünstig herstellbar.The device according to the invention is due to its simple Part structure can be produced inexpensively.

Die Erfindung wird im folgenden anhand von Zeichnungen erläu­ tert, die vorteilhafte Ausführungsbeispiele darstellen. Darin zeigen:The invention is explained below with reference to drawings tert, which represent advantageous embodiments. In this demonstrate:

Fig. 1 die Vorderansicht des Spannringes mit Spannschrauben, in verkleinerter Darstellung, Fig. 1 is a front view of the clamping ring with the clamping screws, in reduced scale,

Fig. 2 die Vorderansicht des Druckringes in verkleinerter Dar­ stellung, Fig. 2 is a front view of the pressure ring position in a reduced Dar,

Fig. 3 die Vorderansicht der kompl. Vorrichtung mit deckungsglei­ chen Aussparungen, Fig. 3 is the front view of the compl. Device with congruent recesses,

Fig. 4 ein um 90° nach oben geklappter Schnitt der Anordnung in Fig. 3, Fig. 4 is a 90 ° to the top folded section of the arrangement in Fig. 3,

Fig. 5 die Vorderansicht der kompl. Vorrichtung, verriegelt durch drehen des Spannringes um 180°, Fig. 5 is the front view of the compl. Device, locked by turning the clamping ring by 180 °,

Fig. 6 die Seitenansicht der kompl. Vorrichtung im Halbschnitt mit Prothese und Doppelkonus-Adapter, Fig. 6 is a side view of the compl. Half-cut device with prosthesis and double cone adapter,

Fig. 7 einen um 90° nach unten geklappten Schnitt der Anordnung in Fig. 6, Fig. 7 shows a 90 ° folded-down section of the arrangement in Fig. 6,

Fig. 8 einen um 90° nach unten geklappten Schnitt der Anordnung in Fig. 6, jedoch mit Festkonusprothese und Kurzhalssteck­ kugelkopf. Fig. 8 is a 90 ° down section of the arrangement in Fig. 6, but with a fixed-cone prosthesis and short-necked ball head.

Fig. 1 und Fig. 2 zeigen die Einzelteile der Ausschlagvorrichtung, wobei in Fig. 1 der Spannring 1 mit der schlitzförmigen Ausspar­ ung 2, dem umlaufenden Steg 3, der trichterartigen Erweiterung 4 und den Spannschrauben 5 dargestellt ist und Fig. 2 den Druck­ ring 6 mit der schlitzförmigen Aussparung 7 und den Führungs­ bund 8 zeigt. Fig. 1 and Fig. 2 show the individual parts of the deflection device, wherein in Fig. 1 the clamping ring 1 with the slot-shaped recess ung 2 , the circumferential web 3 , the funnel-like extension 4 and the clamping screws 5 is shown and Fig. 2 the pressure ring 6 with the slot-shaped recess 7 and the guide collar 8 shows.

Fig. 3 und Fig. 4 zeigen die kompl. Ausziehvorrichtung mit dem in den Führungsbund 8 des Druckringes 6 eingelegten Spannring 1, sowie die deckungsgleich übereinanderliegenden schlitzförmigen Aussparungen 2 und 7. Fig. 3 and Fig. 4 show the compl. Pull-out device with the tension ring 1 inserted into the guide collar 8 of the pressure ring 6 , as well as the slot-like recesses 2 and 7 lying congruently one above the other.

In Fig. 5, Fig. 6 und Fig. 7 ist die auf das Kragenende 9 der Pro­ these 10 und dem Spalt 11 des Doppelkonus-Adapters 12 gesteckte Ausziehvorrichtung dargestellt, wobei durch das Verdrehen des Spannringes 1 um 180° die Ausziehvorrichtung sicher mit dem Doppelkonus-Adapter 12 verriegelt ist. Durch das abwechselnde gleichmäßige Anziehen der Spannschrauben 5 wird der Druckring 6 gegen den Kragen 13 der Prothese 10 und der umlaufende Steg 3 des Spannringes 1 gegen den Bund 14 des Doppelkonus-Adapters 12 gepreßt und eine querkraftfreie, knochen- und gewebeschonende Entfernung des Doppelkonus-Adapters 12 ermöglicht.In Fig. 5, Fig. 6 and Fig. 7, the pull-out device shown on the collar end 9 of the prosthesis 10 and the gap 11 of the double-cone adapter 12 is shown, the pull-out device being secured by rotating the clamping ring 1 by 180 ° Double cone adapter 12 is locked. The alternating, even tightening of the tensioning screws 5 presses the pressure ring 6 against the collar 13 of the prosthesis 10 and the circumferential web 3 of the tensioning ring 1 against the collar 14 of the double cone adapter 12, and a removal of the double cone adapter that is gentle on the shear force and bone-friendly 12 allows.

Fig. 8 zeigt die Pestkonusprothese 15 mit dem Außenkonus 16 und dem darauf gesteckten Kurzhalskugelkopf 17 sowie die aufgesteck­ te und verriegelte Ausziehvorrichtung. Analog der vorbeschrie­ benen Weise wird auch hier der Druckring 6 gegen den Kragen 13 der Festkonusprothese 15 und der umlaufende Steg 3 des Spann­ ringes 1 gegen den Bund 18 des Kurzhalskugelkopfes 17 gepreßt, und der Kurzhalskugelkopf 17 sicher und problemlos entfernt. Fig. 8 shows the plague cone prosthesis 15 with the outer cone 16 and the short-neck ball head 17 plugged thereon as well as the plugged-in and locked pull-out device. Analogous to the manner described above, the pressure ring 6 is pressed against the collar 13 of the fixed-cone prosthesis 15 and the circumferential web 3 of the clamping ring 1 against the collar 18 of the short-necked ball head 17 , and the short-necked ball head 17 is removed safely and easily.

Claims (5)

1. Ausziehvorrichtung zum Entfernen von Doppelkonus-Adapter oder Steckkugelkopf bei Schaftendoprothesen mit Innen- bzw. Prothesenaußenkonus am proximalen Ende, bestehend aus einem Spannring mit schlitzförmiger Aussparung (2), und zwei Spannschrauben, sowie einem Druckring mit ebenfalls schlitzförmiger Aussparung (7), dadurch gekennzeichnet, daß der Spannring (1) mit der schlitzförmigen Aussparung (2) und den Spannschrauben (5) so in den Führungsbund (8) des Druckringes (6) eingelegt ist, daß die schlitzförmigen Aussparungen (2) und (7) deckungsgleich übereinander liegen und somit die Vorrichtung auf das Kragenende (9) der Schaftendoprothese mit Doppelkonus-Adapter (12) oder Prothesenaußenkonus (16) und einen Spalt (11) am Kragenende (9) steckbar ist.1. Pull-out device for removing double cone adapter or plug-spherical head at Schaftendoprothesen with inner and prostheses outer cone at the proximal end, consisting of a clamping ring with a slit-shaped recess (2), and two clamping screws, and a pressure ring, also with a slot-shaped recess (7), characterized characterized in that the clamping ring ( 1 ) with the slot-shaped recess ( 2 ) and the clamping screws ( 5 ) is inserted into the guide collar ( 8 ) of the pressure ring ( 6 ) in such a way that the slot-shaped recesses ( 2 ) and ( 7 ) lie congruently one above the other and thus the device can be plugged onto the collar end ( 9 ) of the shaft endoprosthesis with a double cone adapter ( 12 ) or outer prosthesis cone ( 16 ) and a gap ( 11 ) at the collar end ( 9 ). 2. Ausziehvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Drehen des Spannringes (1) um 180° die aufgesteckte Vorrichtung mit dem Doppelkonus-Adapter (12) bzw. dem Prothesenaußenkonus (16) verriegelt.2. Extracting device according to claim 1, characterized in that the rotation of the clamping ring ( 1 ) by 180 ° locks the attached device with the double cone adapter ( 12 ) or the outer prosthesis cone ( 16 ). 3. Ausziehvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die schlitzförmige Aussparung (2) im Querschnitt aus einer trichterartigen Erweiterung (4) zur Aufnahme des Steckkugelkopfes (17) mit Kurzhals sowie einem umlaufenden Steg (3) besteht, dessen lichte Weite um ein Spiel größer als der größte Durchmesser des Doppelkonus-Adapters (12) bzw. des Prothesenaußenkonus (16) ist, und dessen Dicke um ein Spiel kleiner ist als die Breite des Spaltes (11).3. Extracting device according to claim 1, characterized in that the slot-shaped recess ( 2 ) in cross section from a funnel-like extension ( 4 ) for receiving the plug-in ball head ( 17 ) with a short neck and a circumferential web ( 3 ), the clear width of a game is larger than the largest diameter of the double cone adapter ( 12 ) or the outer prosthesis cone ( 16 ), and its thickness is a game smaller than the width of the gap ( 11 ). 4. Ausziehvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die schlitzförmige Aussparung (7) des Druckringes (6) um ein Spiel größer als der Durchmesser des Kragenendes (9) ist und der Innendurchmesser des Führungsbundes (8) um ein Spiel größer ist als der Außendurchmesser des Spannringes (1).4. Extracting device according to claim 1, characterized in that the slot-shaped recess ( 7 ) of the pressure ring ( 6 ) is larger by a game than the diameter of the collar end ( 9 ) and the inner diameter of the guide collar ( 8 ) by a game larger than that Outside diameter of the clamping ring ( 1 ). 5. Ausziehvorrichtung nach einem der Ansprüche 1-4, dadurch gekennzeichnet, daß das Anziehen der Spannschrauben (5) den Druckring (6) gegen einen Kragen (13) am proximalen Ende der Schaftendoprothese und den umlaufenden Steg (3) gegen einen Bund (14 bzw. 18) preßt.5. Extracting device according to one of claims 1-4, characterized in that the tightening of the clamping screws ( 5 ) the pressure ring ( 6 ) against a collar ( 13 ) at the proximal end of the shaft endoprosthesis and the circumferential web ( 3 ) against a collar ( 14 or 18 ) presses.
DE4441870A 1994-11-24 1994-11-24 Extractor for hip joints Expired - Fee Related DE4441870C1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE4441870A DE4441870C1 (en) 1994-11-24 1994-11-24 Extractor for hip joints
DE9418861U DE9418861U1 (en) 1994-11-24 1994-11-24 Pull-out device for removing the double-cone adapter or plug-in ball head for shaft endoprostheses with an inner or outer cone at the proximal end

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4441870A DE4441870C1 (en) 1994-11-24 1994-11-24 Extractor for hip joints
DE9418861U DE9418861U1 (en) 1994-11-24 1994-11-24 Pull-out device for removing the double-cone adapter or plug-in ball head for shaft endoprostheses with an inner or outer cone at the proximal end

Publications (1)

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DE4441870C1 true DE4441870C1 (en) 1996-03-28

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DE4441870A Expired - Fee Related DE4441870C1 (en) 1994-11-24 1994-11-24 Extractor for hip joints
DE9418861U Expired - Lifetime DE9418861U1 (en) 1994-11-24 1994-11-24 Pull-out device for removing the double-cone adapter or plug-in ball head for shaft endoprostheses with an inner or outer cone at the proximal end

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Cited By (5)

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EP0811360A2 (en) * 1996-06-07 1997-12-10 Johnson & Johnson Medical Limited Extraction device
EP1106148A1 (en) * 1999-11-25 2001-06-13 Steinicke Maschinen- und Werkzeugbau AG Extracting instrument for disconnecting individual parts of an endoprosthesis
EP1169981A1 (en) * 2000-07-07 2002-01-09 Sulzer Orthopädie AG Ball head pulling device for a shaft prosthesis
US9615941B2 (en) 2007-05-02 2017-04-11 Zimmer, Inc. Orthopedic tool for altering the connection between orthopedic components
CN108135584A (en) * 2015-07-27 2018-06-08 黑普创新技术有限责任公司 The tool and method of femoral cup and acetabular ball are detached in the hip prosthesis of implantation

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DE4310834C1 (en) * 1993-04-02 1994-10-13 Wolfgang Zach Extraction device for removing and driving in shaft endoprostheses with a smooth conical or cylindrical proximal end

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DE7601139U1 (en) * 1976-05-26 Aesculap-Werke Ag Vormals Jetter & Scheerer, 7200 Tuttlingen Surgical instrument for inserting and withdrawing a joint endoprosthesis
US3818514A (en) * 1971-08-09 1974-06-25 Thackray C F Ltd Femoral prosthesis with removable protective sheath
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0811360A2 (en) * 1996-06-07 1997-12-10 Johnson & Johnson Medical Limited Extraction device
EP0811360A3 (en) * 1996-06-07 1998-11-11 Johnson & Johnson Medical Limited Extraction device
US6013082A (en) * 1996-06-07 2000-01-11 Johnson & Johnson Professional, Inc. Extraction device
EP1106148A1 (en) * 1999-11-25 2001-06-13 Steinicke Maschinen- und Werkzeugbau AG Extracting instrument for disconnecting individual parts of an endoprosthesis
EP1169981A1 (en) * 2000-07-07 2002-01-09 Sulzer Orthopädie AG Ball head pulling device for a shaft prosthesis
US9615941B2 (en) 2007-05-02 2017-04-11 Zimmer, Inc. Orthopedic tool for altering the connection between orthopedic components
CN108135584A (en) * 2015-07-27 2018-06-08 黑普创新技术有限责任公司 The tool and method of femoral cup and acetabular ball are detached in the hip prosthesis of implantation

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