WO2007113607A1 - Assembly consisting of head and movable neck for preparing the implantation of an artificial hip - Google Patents

Assembly consisting of head and movable neck for preparing the implantation of an artificial hip Download PDF

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Publication number
WO2007113607A1
WO2007113607A1 PCT/IB2006/000791 IB2006000791W WO2007113607A1 WO 2007113607 A1 WO2007113607 A1 WO 2007113607A1 IB 2006000791 W IB2006000791 W IB 2006000791W WO 2007113607 A1 WO2007113607 A1 WO 2007113607A1
Authority
WO
WIPO (PCT)
Prior art keywords
frustoconical
head
frustoconical portion
cylindrical
diameter
Prior art date
Application number
PCT/IB2006/000791
Other languages
French (fr)
Inventor
Sheila Ragbir
Original Assignee
Mariasal Investment N.V.
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 Mariasal Investment N.V. filed Critical Mariasal Investment N.V.
Priority to US12/296,135 priority Critical patent/US20100161069A1/en
Priority to PCT/IB2006/000791 priority patent/WO2007113607A1/en
Priority to EP06755835A priority patent/EP2001412A1/en
Publication of WO2007113607A1 publication Critical patent/WO2007113607A1/en

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
    • A61F2/4684—Trial or dummy prostheses
    • 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
    • A61F2002/30354—Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
    • 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
    • A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/30487—Circumferential cooperating grooves and beads on cooperating lateral surfaces of a mainly longitudinal connection
    • 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
    • A61F2002/3053—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements having additional means for preventing unwanted connections
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
    • A61F2002/30879—Ribs
    • A61F2002/30881—Circumferential ribs, flanges or fins
    • 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
    • A61F2002/3611—Heads or epiphyseal parts of femur
    • 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
    • A61F2002/365—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
    • 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
    • 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

Definitions

  • Assembly consisting of head and movable neck for preparing the implantation of an artificial hip
  • the present invention relates to the technical sector which deals with the production of the various components necessary for performing the implantation of an artificial hip.
  • an artificial hip i.e. a movable neck on which a spherical head is mounted, which are made of plastic material and are used for tests and measurements during an operation in order to define as precisely as possible the dimensions and the positioning of the abovementioned parts of the final artificial hip which must be implanted.
  • This configuration of the parts is such that, very frequently, when handling them in order to simulate an operation, forced engagement occurs between their frustoconical surfaces which makes disengagement thereof awkward and difficult, with complications which are easy to imagine and a loss of time which is prejudicial in a surgical environment.
  • the said fmstoconical hole has a cylindrical extension from the side walls of which an annular protrusion projects slightly, and the flat end of the frustoconical portion of the neck has, projecting from it, a coaxial cylindrical protrusion with a slightly smaller diameter which may be introduced coaxially into the abovementioned extension of the frustoconical hole in the head, remaining constrained there as a result of the interference caused by the existence of the said annular protrusion and owing to the elasticity of the plastic materials with which the abovementioned so-called "test" neck and head are made.
  • the height of the said cylindrical protrusion in the axial direction is less than or the same as that of the said extension so that, when it is inserted fully inside the latter, the flat surface of the end of the frustoconical portion of the neck bears against a concentric shoulder formed in the head around the abovementioned cylindrical extension of its frustoconical hole before engagement occurs between the inclined surfaces of the fmstoconical portion of the neck and the frustoconical hole in the head.
  • the present invention therefore relates to an assembly consisting of head and movable neck for simulating the modular parts of an artificial hip as described in the accompanying Claim 1.
  • - Fig. 1 is a longitudinal section through the said example of embodiment of an assembly according to the invention, with a movable neck introduced only partly into the frustoconical hole of a spherical head;
  • FIG. 2 is the same longitudinal section as in Figure I 5 with the movable neck introduced completely into the said frustoconical hole of the head inside which it remains constrained.
  • a spherical head 2 has a frustoconical hole 2t provided with a blind, coaxial, cylindrical extension 5, from the side walls of which an annular protrusion 6 (enlarged in the drawing for the sake of illustrative clarity) projects inwards.
  • the flat end 3e of the frustoconical portion 3t of a movable neck 3 has, coaxially formed thereon, a cylindrical protrusion 4 having a diameter D smaller than that of the said frustoconical portion 3t opposite its flat end 3e.
  • the internal diameter d of the abovementioned annular protrusion 6 is slightly smaller than, or rather substantially equal to, with slight interference, the diameter D of the abovementioned cylindrical protrusion 4 of the frustoconical portion 3t of the neck 3, and, the height H of the said cylindrical extension 5 is also greater than or equal to the height h of the cylindrical protrusion 4 and is calculated so that, when the latter is inserted over its entire height inside the said cylindrical extension 5, as shown in Figure 2, the said flat end 3e of the frustoconical portion 3t of the neck 3 bears against the already mentioned shoulder 7 formed on the head 2 concentrically with respect to the said cylindrical extension 5 of its frustoconical hole 2t, preventing forced engagement occurring between the inclined surfaces of the parts.
  • the predefined object of the inventor has thus been achieved.

Landscapes

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

Abstract

An assembly (1) consisting of head (2) and movable neck (3) for preparing the implantation of an artificial hip is described, the head (2) and the movable neck (3) having, respectively, a frustoconical hole (2t) and a frustoconical portion (3t) able to be inserted in a complementary manner therein. In the assembly (1) according to the invention, the flat end (3e) of the said frustoconical portion (3t) has, coaxially formed or mounted thereon, a cylindrical protrusion (4) having a diameter (D) smaller than the diameter of the frustoconical portion (3t) opposite its said flat end (3e) and the said frustoconical hole (2t) has a coaxial, blind, cylindrical extension (5) from the side walls of which an annular protrusion (6) having an internal diameter (d) which produces a slight interference with the diameter (D) of the said cylindrical protrusion (4) of the frustoconical portion (3t) projects, and the height (H) of the said cylindrical extension (5) of the frustoconical hole (2t) is greater than or equal to the height (h) of the abovementioned cylindrical protrusion (4) so that, when the latter (4) is inserted over its entire height inside the said cylindrical extension (5), the said flat end (3e) of the frustoconical portion (3t) bears against a concentric shoulder (7) formed on the head (2) around the said cylindrical extension (5) before forced engagement occurs between the surfaces of the frustoconical portion (3t) of the neck (3) and the frustoconical hole (2t) in the head (2).

Description

Assembly consisting of head and movable neck for preparing the implantation of an artificial hip
The present invention relates to the technical sector which deals with the production of the various components necessary for performing the implantation of an artificial hip.
More particularly, it relates to those components of an artificial hip, i.e. a movable neck on which a spherical head is mounted, which are made of plastic material and are used for tests and measurements during an operation in order to define as precisely as possible the dimensions and the positioning of the abovementioned parts of the final artificial hip which must be implanted.
These components made of plastic material are faithful reproductions of a real movable neck and real spherical head and, as such, are assembled together by means of a conical fit between a frustoconical hole formed in the head and a frustoconical portion of the neck which is inserted in a complementary manner inside it.
This configuration of the parts is such that, very frequently, when handling them in order to simulate an operation, forced engagement occurs between their frustoconical surfaces which makes disengagement thereof awkward and difficult, with complications which are easy to imagine and a loss of time which is prejudicial in a surgical environment.
In order to overcome this drawback, the inventor of the subject of the present application has devised a "facsimile" of an artificial hip which, when used, avoids the risk of forced engagement mentioned above owing to various constructional measures which will be described more fully below.
In the spherical head forming part of the assembly of components which simulate an artificial hip according to the invention, the said fmstoconical hole has a cylindrical extension from the side walls of which an annular protrusion projects slightly, and the flat end of the frustoconical portion of the neck has, projecting from it, a coaxial cylindrical protrusion with a slightly smaller diameter which may be introduced coaxially into the abovementioned extension of the frustoconical hole in the head, remaining constrained there as a result of the interference caused by the existence of the said annular protrusion and owing to the elasticity of the plastic materials with which the abovementioned so-called "test" neck and head are made.
The height of the said cylindrical protrusion in the axial direction is less than or the same as that of the said extension so that, when it is inserted fully inside the latter, the flat surface of the end of the frustoconical portion of the neck bears against a concentric shoulder formed in the head around the abovementioned cylindrical extension of its frustoconical hole before engagement occurs between the inclined surfaces of the fmstoconical portion of the neck and the frustoconical hole in the head.
An undesirable forced engagement between the various components is thus avoided in a sure and reliable manner and the possibility is provided of being able to replace easily the said components during the preliminary operations which precede the fitting of the final prostheses. The present invention therefore relates to an assembly consisting of head and movable neck for simulating the modular parts of an artificial hip as described in the accompanying Claim 1.
A preferred example of embodiment of the assembly according to the invention will now be described in more detail with reference also to the accompanying drawings in which:
- Fig. 1 is a longitudinal section through the said example of embodiment of an assembly according to the invention, with a movable neck introduced only partly into the frustoconical hole of a spherical head;
- Fig. 2 is the same longitudinal section as in Figure I5 with the movable neck introduced completely into the said frustoconical hole of the head inside which it remains constrained.
If we consider Fig. 1 firstly, in this figure it can be seen how, in an assembly 1 according to the invention, a spherical head 2 has a frustoconical hole 2t provided with a blind, coaxial, cylindrical extension 5, from the side walls of which an annular protrusion 6 (enlarged in the drawing for the sake of illustrative clarity) projects inwards. A flat shoulder 7, which is concentric therewith, is formed around the base of this cylindrical extension 5.
The flat end 3e of the frustoconical portion 3t of a movable neck 3 has, coaxially formed thereon, a cylindrical protrusion 4 having a diameter D smaller than that of the said frustoconical portion 3t opposite its flat end 3e.
As can be seen in the drawing, the internal diameter d of the abovementioned annular protrusion 6 is slightly smaller than, or rather substantially equal to, with slight interference, the diameter D of the abovementioned cylindrical protrusion 4 of the frustoconical portion 3t of the neck 3, and, the height H of the said cylindrical extension 5 is also greater than or equal to the height h of the cylindrical protrusion 4 and is calculated so that, when the latter is inserted over its entire height inside the said cylindrical extension 5, as shown in Figure 2, the said flat end 3e of the frustoconical portion 3t of the neck 3 bears against the already mentioned shoulder 7 formed on the head 2 concentrically with respect to the said cylindrical extension 5 of its frustoconical hole 2t, preventing forced engagement occurring between the inclined surfaces of the parts.
By means of the already mentioned slight interference between the said annular cylindrical protrusion 6 and the said cylindrical protrusion 4 of the neck 3 the parts may be fixed together in a sufficiently reliable manner to perform the already described preliminary operations, with the possibility of easily disengaging them with minimum effort
The predefined object of the inventor has thus been achieved.

Claims

Claims
1. Assembly (1) consisting of head (2) and movable neck (3) for preparing the implantation of an artificial hip, the said head (2) and the said movable neck (3) having, respectively, a frustoconical hole (2t) and a frustoconical portion (3t) able to be inserted in a complementary manner therein, characterized in that the flat end (3e) of the said frustoconical portion (3t) has, coaxially formed or mounted thereon, a cylindrical protrusion (4) having a diameter (D) smaller than the diameter of the frustoconical portion (3t) opposite its said flat end (3e) and in that the said frustoconical hole (2t) has a coaxial, blind, cylindrical extension (5) from the side walls of which an annular protrusion (6) having an internal diameter (d) which produces a slight interference with the diameter (D) of the said cylindrical protrusion (4) of the frustoconical portion (3t) projects, and the height (H) of the said cylindrical extension (5) of the frustoconical hole (2t) is greater than or equal to the height (h) of the abovementioned cylindrical protrusion (4) so that, when the latter (4) is inserted over its entire height inside the said cylindrical extension (5), the said flat end (3e) of the frustoconical portion (3t) bears against a concentric shoulder (7) formed on the head
(2) around the said cylindrical extension (5) before forced engagement occurs between the surfaces of the frustoconical portion (3t) of the neck
(3) and the frustoconical hole (2t) in the head (2).
2. Assembly according to Claim 1, in which the profile of the section of the said annular protrusion (6) has the form of a circle arc.
PCT/IB2006/000791 2006-04-05 2006-04-05 Assembly consisting of head and movable neck for preparing the implantation of an artificial hip WO2007113607A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/296,135 US20100161069A1 (en) 2006-04-05 2006-04-05 Assembly consisting of head and movable neck for preparing the implantation of an artificial hip
PCT/IB2006/000791 WO2007113607A1 (en) 2006-04-05 2006-04-05 Assembly consisting of head and movable neck for preparing the implantation of an artificial hip
EP06755835A EP2001412A1 (en) 2006-04-05 2006-04-05 Assembly consisting of head and movable neck for preparing the implantation of an artificial hip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2006/000791 WO2007113607A1 (en) 2006-04-05 2006-04-05 Assembly consisting of head and movable neck for preparing the implantation of an artificial hip

Publications (1)

Publication Number Publication Date
WO2007113607A1 true WO2007113607A1 (en) 2007-10-11

Family

ID=37500338

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/000791 WO2007113607A1 (en) 2006-04-05 2006-04-05 Assembly consisting of head and movable neck for preparing the implantation of an artificial hip

Country Status (3)

Country Link
US (1) US20100161069A1 (en)
EP (1) EP2001412A1 (en)
WO (1) WO2007113607A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010129990A1 (en) * 2009-05-12 2010-11-18 Atlax Pty Ltd Atf Atlax Trust Hip prosthesis
WO2012099790A1 (en) * 2011-01-17 2012-07-26 Zimmer, Inc. Adapter for explant system

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8579985B2 (en) 2006-12-07 2013-11-12 Ihip Surgical, Llc Method and apparatus for hip replacement
CA2671523C (en) * 2006-12-07 2013-02-12 Anatol Podolsky Method and apparatus for total hip replacement
US8974540B2 (en) * 2006-12-07 2015-03-10 Ihip Surgical, Llc Method and apparatus for attachment in a modular hip replacement or fracture fixation device
WO2010129880A2 (en) * 2009-05-07 2010-11-11 Smith & Nephew, Inc. Modular trial heads for a prosthetic
CN105263447A (en) * 2012-09-27 2016-01-20 马萨诸塞总医院运营总医院公司 Femoral heads, mobile inserts, acetabular components, and modular junctions for orthopedic implants and methods of using femoral heads, mobile inserts, acetabular components, and modular junctions for orthopedic implants
DE102014119348A1 (en) * 2014-12-22 2016-06-23 Aesculap Ag Medical force measuring system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2290880A1 (en) * 1974-11-15 1976-06-11 Deaux Ets Head for artificial hip joint - has boss threaded through elastic inside spherical portion
US5405403A (en) * 1994-03-18 1995-04-11 Mikhail; W. E. Michael Femoral prosthesis with anti-rotation feature for ball
US5766261A (en) * 1996-02-01 1998-06-16 Osteonics Corp. Femoral revision broach with modular trial components and method
FR2796267A1 (en) * 1999-07-13 2001-01-19 Protheos Ind Assembly neck for femoral prosthesis has pins on neck engaging bores in end of medullary nail
DE19951141A1 (en) * 1999-10-23 2001-05-10 Corimed Kundenorientierte Medi Hip joint endoprosthesis has shaft, neck-piece, link connection and spherical bone-head
EP1258233A1 (en) * 2001-05-18 2002-11-20 Sulzer Orthopedics Ltd. Trial balls for hip prothesis

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2290880A1 (en) * 1974-11-15 1976-06-11 Deaux Ets Head for artificial hip joint - has boss threaded through elastic inside spherical portion
US5405403A (en) * 1994-03-18 1995-04-11 Mikhail; W. E. Michael Femoral prosthesis with anti-rotation feature for ball
US5766261A (en) * 1996-02-01 1998-06-16 Osteonics Corp. Femoral revision broach with modular trial components and method
FR2796267A1 (en) * 1999-07-13 2001-01-19 Protheos Ind Assembly neck for femoral prosthesis has pins on neck engaging bores in end of medullary nail
DE19951141A1 (en) * 1999-10-23 2001-05-10 Corimed Kundenorientierte Medi Hip joint endoprosthesis has shaft, neck-piece, link connection and spherical bone-head
EP1258233A1 (en) * 2001-05-18 2002-11-20 Sulzer Orthopedics Ltd. Trial balls for hip prothesis

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010129990A1 (en) * 2009-05-12 2010-11-18 Atlax Pty Ltd Atf Atlax Trust Hip prosthesis
WO2012099790A1 (en) * 2011-01-17 2012-07-26 Zimmer, Inc. Adapter for explant system
US8834480B2 (en) 2011-01-17 2014-09-16 Zimmer, Inc. Adapter for explant system

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