DE29824993U1 - Protection cap for ball part of artificial ball and socket joint - Google Patents

Protection cap for ball part of artificial ball and socket joint

Info

Publication number
DE29824993U1
DE29824993U1 DE29824993U DE29824993U DE29824993U1 DE 29824993 U1 DE29824993 U1 DE 29824993U1 DE 29824993 U DE29824993 U DE 29824993U DE 29824993 U DE29824993 U DE 29824993U DE 29824993 U1 DE29824993 U1 DE 29824993U1
Authority
DE
Germany
Prior art keywords
protective cap
ball head
plate
ball
characterized
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 - Lifetime
Application number
DE29824993U
Other languages
German (de)
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.)
CeramTec GmbH
Original Assignee
CeramTec 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
Application filed by CeramTec GmbH filed Critical CeramTec GmbH
Priority to DE29824993U priority Critical patent/DE29824993U1/en
Priority to DE19813328A priority patent/DE19813328A1/en
Publication of DE29824993U1 publication Critical patent/DE29824993U1/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

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
    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4637Special 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/90Identification means for patients or instruments, e.g. tags
    • A61B90/92Identification means for patients or instruments, e.g. tags coded with colour
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/90Identification means for patients or instruments, e.g. tags
    • A61B90/94Identification means for patients or instruments, e.g. tags coded with symbols, e.g. text
    • 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
    • A61F2/0095Packages or dispensers for prostheses or other implants
    • 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
    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603Special 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
    • 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
    • A61F2002/30316The 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
    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331Connections 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
    • A61F2002/30332Conically- or frustoconically-shaped protrusion and recess
    • 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
    • A61F2002/30316The 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
    • A61F2002/30535Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30594Special structural features of bone or joint prostheses not otherwise provided for slotted
    • 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
    • A61F2002/30667Features concerning an interaction with the environment or a particular use of the prosthesis
    • A61F2002/3071Identification means; Administration of patients
    • 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
    • A61F2002/30667Features concerning an interaction with the environment or a particular use of the prosthesis
    • A61F2002/30718Means for protecting prosthetic parts, e.g. during operation
    • 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
    • A61F2/32Joints for the hip
    • A61F2/36Femoral heads ; Femoral endoprostheses
    • A61F2/3609Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3611Heads or epiphyseal parts of femur
    • 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
    • A61F2/32Joints for the hip
    • A61F2/36Femoral heads ; Femoral endoprostheses
    • A61F2/3609Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/365Connections of heads to necks
    • 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
    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2002/4681Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor by applying mechanical shocks, e.g. by hammering
    • 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
    • A61F2220/00Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033Connections 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
    • 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
    • A61F2250/00Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/0085Identification means; Administration of patients
    • A61F2250/0087Identification means; Administration of patients colour-coded
    • 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
    • A61F2250/00Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/0085Identification means; Administration of patients
    • A61F2250/0089Identification means; Administration of patients coded with symbols, e.g. dots, numbers, letters, words
    • 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
    • A61F2310/00179Ceramics or ceramic-like structures
    • A61F2310/00185Ceramics or ceramic-like structures based on metal oxides
    • A61F2310/00203Ceramics or ceramic-like structures based on metal oxides containing alumina or aluminium oxide

Abstract

Device for handling ball heads of joint prostheses, in which the surface of the respective ball head is covered by a protective cap before it is placed on the cone of a shaft, so that the protective cap is automatically held on the ball head and can be removed without tools characterized in that an attachment (9, 109, 209) in the form of a plate (10, 110, 210) is arranged on the pole (12) of the protective cap (2) and in that the plate (10, 110, 210) has such a shape and such an expansion relative to the protective cap (2) that it can be gripped behind on the side (18, 118, 218) facing the protective cap (2).

Description

  • The innovation concerns a facility for handling ball heads of joint prostheses correspond to the preamble of the first claim.
  • Joint prostheses in which a joint partner designed as a pan and the other joint partner as a spherical head is, which is rotatably mounted in the pan, are in particular as shoulder and hip joint prostheses known. These prostheses are generally modular. Hip endoprosthesis for example, consist of the pan that is in the hip bones, and the shaft that is inserted into the thigh bone. The shaft has a pin, the so-called cone, on which the Ball head is plugged on. Especially with this modular one Endoprosthesis are implant components to adapt to the physique of the patient different materials and sizes combined. For example become ball heads from a cobalt-chromium alloy or from an aluminum oxide ceramic on a cone made of a titanium or cobalt-chrome-molybdenum alloy attached. As a connection technology between metallic or ceramic ball heads and the cone, the press fit connection is used, especially the conical clamping. The ball head is made with a conical Bore placed on the cone. After attaching the ball head the cone is fixed by a blow on the ball head.
  • As from the publication "The principle of the cone connector for ceramic ball heads for hip endoprostheses "by G. Willmann, Mat.-wiss. U. Material Tech. 24, pages 315-319 (1993), is known all ceramics are brittle. With non-area initiated loads and in the event of damage to the surface Scratches can cause stress concentrations occur that lead to destruction of the ball head. For metallic ball heads can Scratches occur, which in turn cause abrasion in the surrounding area Can cause bearing shell.
  • Around the ball heads until the time of their use in the operating room from damage to protect, it is known to use a protective cap adapted to the spherical shape to provide. With ball heads, which differ only slightly in diameter become protective caps used with the same inner diameter. The protective caps are usually removed only in the operating room. A protective cap is in its lower area divided into slats, which the ball head to below its equatorial Reach around the diameter and the protective cap automatically hold the ball head. The ball heads the hip joint endoprosthesis are placed by hand on the shaft by the surgeon. To do this, the protective cap must be removed, which is in the vicinity of the Surgical wound due to gloves wetted by body fluids of the surgeon is difficult. When attaching a ball head can due to residues gloves are scratched on the polished surface. With metallic ball heads can that increase Lead abrasion in the pan. Moreover exists due to the large number of instruments used during a Operation can be used in addition the danger, the surface the ball heads to damage. Another difficulty with the operation is that the ball heads differ only slightly in diameter, can be recognized with certainty.
  • It is therefore the task of the present innovation the protective caps so that the handling of the ball heads during the Surgery facilitates the protection of the ball heads too while of being attached to the cone of the shaft and that the possibility the differentiation of different sizes and materials improved becomes.
  • The task is solved with Help of the characterizing features of the first claim. advantageous Refinements of the innovation are claimed in the subclaims.
  • The new device for handling of ball heads points to the pole of the protective cap, which the ball head from its Manufactured up to the time of insertion from damage protected should have an essay in the form of a plate. The plate has one such a shape and such an expansion compared to the protective cap, that they can be reached behind on the side facing the protective cap is. The plate can be round, polygonal or another Have peripheral shape.
  • While a conventional one Protective cap on a ball head by a surgeon during the Operation with body fluids wet gloves is very difficult to remove and the Ball head difficult to handle due to its polished surface is the new facility for handling ball heads Possibility, to hold the ball head securely until it sits on the shaft and to lead safely. The attachment offers the possibility the ball head with its conical opening aimed at the cone of the shaft. The surface on the plate of the essay can additionally as a face for the Fixing tool with which the ball head on the cone through a blow is pressed. The plate offers a larger area for Impact of the striking tool as a curved spherical surface. Farther will damage the sensitive, polished surface of the ball from damage the striking tool protected.
  • The surface of the ball head is always protected from damage during all of the handling until it is fixed on the cone of the shaft protected by surgical tools or by dirt. When the ball head is fixed on the cone of the shaft, the protective cap can be easily removed from the ball head with the help of the attachment that can be gripped behind. During the pulling process, the lamellae of the protective cap expand and release the ball head. The material of the device can be, for example, an impact-resistant, tough plastic.
  • In an advantageous embodiment, the plate is Innovation arranged so that it is perpendicular to the elongated Connection line from the center of the ball head to the pole of the protective cap stands. This is an orientation of the device for handling ball heads possible to the cone of the shaft. The surface the plate can be flat or slightly convex. That way she can also as a face for the Serve fixing tool.
  • In a further advantageous embodiment of the Innovation can be between the protective cap and the plate of the attachment a neck may be arranged. Through this neck, for example a length of can have about 1 cm, the possibility of the rear grip and thus the handling is made even easier. Moreover the neck offers the possibility a targeted introduction of the fixation force into the ball. At the The ball head is placed on the cone of the shaft force applied in the longitudinal direction exactly of the cone is initiated when the neck is aligned exactly in the longitudinal direction of the cone becomes.
  • The neck can also be in the form of a Stalks extended be and for example a length have up to 100 mm. Such a trained facility for handling ball heads can, for example, with ball heads are used that are not supplied covered with a protective cap have been. These can be used to prepare for the operation ball heads be used in such a device for handling. The The handle then serves as an alignment and insertion aid for the surgeon. Due to the Length of Stiels offers this facility a very good way of positioning and putting on the shaft.
  • A ball head can easily on the Cone of a shaft can be placed when the center line of the conical opening of the ball head is aligned so that it passes through the pole of the Protective cap of the new facility for handling. If the attachment has a neck or a stem for the plate, these can aligned in the direction of the cone. Then the cone was aligned and the opening in the ball head and this only needs to be pushed onto the cone become.
  • In a further embodiment of the The diameter of the plate can be changed in each case relationship to the diameter of the ball head. This makes it possible to already due one previously determined in relation to the diameter of the ball head Diameter of the plate an indication of the diameter of the ball head to give. For the surgeon will be able to distinguish between spherical heads of different diameters while the operation is much easier.
  • The possibility of differentiation the ball heads can be increased in a further embodiment of the innovation that the surface the plate facing away from the protective cap, a carrier Labeling is. This marking can be a label, a Engraving or color coding. The labeling can for example, provide information about the material of the ball head, its diameter, the type and the Size of his conical bore as well as the batch name and the manufacturer. For the surgeon would with that the possibility of differentiation even better and safer.
  • The innovation is based on exemplary embodiments explained in more detail.
  • Show it:
  • 1 a new device for handling ball heads in a perspective view,
  • 2 a section through the device, which is placed on a ball head, which is also cut,
  • 3 a top view of the plate,
  • 4 another device for handling with a neck between the plate and protective cap and
  • 5 a device for handling with a handle between the plate and protective cap.
  • In 1 is with 1 a new device for handling ball heads shown in perspective view enlarged. The protective cap 2 which, according to a further enlarged representation in 2 the ball head 4 is covered, starting from the equatorial diameter 3 of the ball head 4 in equally wide slats 5 divided, each by slot 6 are separated from each other. In the present exemplary embodiment there are eight slats of the same width 5 about the circumference of the protective cap 2 distributed that distributed the ball head 4 over the equatorial diameter 3 reach out. Each of the slats 5 is through a footbridge 7 strengthened. The jetty 7 also has the task that only a small area of the slats 5 on the surface of the ball head 4 is applied. This is the contact surface of the protective cap 2 and the friction exerted on the surface of the ball is also low. The slats 5 each have an annular shoulder at their lower end 8th on. These ring-shaped approaches 8th make it easier to put on the protective cap 2 on a ball head.
  • The protective cap 2 according to the innovation carries an essay 9 in the form of a plate 10 , The circumference of this circular plate 10 can also be polygonal or have any other shape. The diameter 19 the plate 10 can be chosen so that it can be related to the diameter 3 of the ball head 4 , The smaller the diameter 19 the smaller the diameter of the ball head, for example.
  • 2 shows a section through the new facility 1 for handling ball heads after 1 , The protective cap 2 is on a ball head 4 put on, which is cut and left in the left half of the protective cap. It can be seen from the sectional view that the plate in the present exemplary embodiment 10 with its flat surface 14 vertical, at right angles 15 , to the extended connecting line 11 from the center 13 of the ball head 4 to the pole 12 the protective cap 2 stands. The connecting line 11 between the pole 12 the protective cap 2 and the center 13 of the ball head 4 is also the center line of the conical hole 16 in the ball head 4 to accommodate the cone on the shaft. The center line of the conical hole runs for an ideal prerequisite for placing on the cone 11 through the pole 12 the protective cap 2 , As a result, the ball head is placed on the cone and fixed by means of an impact with a striking tool on the plate 10 much easier. The attachment has a manufacturing technology 9 an opening 17 which are towards the center line 11 , the connecting line between the center point 13 of the ball head 4 as well as the pole 12 the protective cap 2 runs.
  • The plate 10 has such an extent 19 opposite the protective cap 2 on that they're on the of the cap 2 facing side 18 is accessible. This expansion can be, for example, the largest outer diameter of the protective cap 2 correspond.
  • 3 shows a top view of the surface 14 the plate 10 , As can be seen, the surface is 14 Label holder 20 , The surface 14 can, for example, be provided with a label that provides information about the diameter, in the present case 32 mm, about the material, in the present case Al 2 O 3 , and about the type of cone, in the present case a Eurocone 12/14. The lettering can be printed or embossed. Colored markings or through-coloring of the material, preferably an impact-resistant plastic, can also be provided.
  • The embodiment in 4 shows a facility 101 for handling ball heads, which differs from the previous embodiment in that the attachment 109 on the protective cap 2 between the protective cap 2 and the plate 110 a neck 121 is arranged. Features that have remained unchanged from the previous exemplary embodiment are identified by the same reference numbers.
  • Due to the larger distance between the plate 110 and the protective cap 2 is page 118 of the plate 110 of the essay 109 much easier to access. The diameter 119 the plate 110 can therefore, for example, be less than in the previous exemplary embodiment.
  • In the embodiment according to 5 instructs the facility 201 for handling ball heads between the protective cap 2 and the plate 210 a neck that is in the shape of a stem 221 is extended and which can be up to 100 mm long. With such a handling aid, the positioning and insertion of the ball heads is particularly easy and precise.

Claims (8)

  1. Device for handling ball heads of joint prostheses, in which the surface of the respective ball head is covered by a protective cap before it is placed on the cone of a shaft, so that the protective cap is automatically held on the ball head and can be removed without tools is characterized in that on the pole ( 12 ) the protective cap ( 2 ) an essay ( 9 . 109 . 209 ) in the form of a plate ( 10 . 110 . 210 ) is arranged and that the plate ( 10 . 110 . 210 ) such a shape and such an expansion compared to the protective cap ( 2 ) that it is on the protective cap ( 2 ) facing side ( 18 . 118 . 218 ) is accessible.
  2. Device according to claim 1, characterized in that the plate ( 10 . 110 . 210 ) perpendicular to the extended connecting line ( 11 ) from the center ( 13 ) of the ball head ( 4 ) to the pole ( 12 ) the protective cap ( 2 ) stands.
  3. Device according to claim 1 or 2, characterized in that between the protective cap ( 2 ) and the plate ( 110 . 210 ) a neck ( 121 . 221 ) is arranged.
  4. Device according to claim 3, characterized in that the neck in the form of a stem ( 221 ) is extended.
  5. Device according to claim 4, characterized in that the length of the stem ( 221 ) is up to 100 mm.
  6. Device according to one of claims 1 to 5, characterized in that the connecting line ( 11 ) between the center point ( 13 ) of the ball head ( 4 ) and the pole ( 12 ) the protective cap ( 2 ) at the same time the center line of the conical bore ( 16 ) in the ball head ( 4 ) is.
  7. Device according to one of claims 1 to 6, characterized in that the diameter ( 19 . 119 . 219 ) the plate ( 10 . 110 . 210 ) in a given ratio to the diameter ( 3 ) of the ball head ( 4 ) stands.
  8. Device according to one of claims 1 to 7, characterized in that the surface ( 14 . 114 . 214 ) the plate ( 10 . 110 . 210 ) the protective cap ( 2 ) is facing away, bearer of a label ( 20 ) is.
DE29824993U 1998-03-26 1998-03-26 Protection cap for ball part of artificial ball and socket joint Expired - Lifetime DE29824993U1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE29824993U DE29824993U1 (en) 1998-03-26 1998-03-26 Protection cap for ball part of artificial ball and socket joint
DE19813328A DE19813328A1 (en) 1998-03-26 1998-03-26 Means for handling of ball heads of joint prostheses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE29824993U DE29824993U1 (en) 1998-03-26 1998-03-26 Protection cap for ball part of artificial ball and socket joint

Publications (1)

Publication Number Publication Date
DE29824993U1 true DE29824993U1 (en) 2003-12-11

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ID=29781196

Family Applications (1)

Application Number Title Priority Date Filing Date
DE29824993U Expired - Lifetime DE29824993U1 (en) 1998-03-26 1998-03-26 Protection cap for ball part of artificial ball and socket joint

Country Status (1)

Country Link
DE (1) DE29824993U1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017029173A1 (en) * 2015-08-19 2017-02-23 Depuy Ireland Unlimited Company An alignment guide
US9937048B2 (en) 2015-01-15 2018-04-10 Depuy Ireland Unlimited Company Femoral stem including an anchor to facilitate assembly and implantation
US10022234B2 (en) 2015-01-15 2018-07-17 Depuy Ireland Unlimited Company Assembly tool

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9937048B2 (en) 2015-01-15 2018-04-10 Depuy Ireland Unlimited Company Femoral stem including an anchor to facilitate assembly and implantation
US10022234B2 (en) 2015-01-15 2018-07-17 Depuy Ireland Unlimited Company Assembly tool
US10085838B2 (en) 2015-01-15 2018-10-02 Depuy Ireland Unlimited Company Assembly tool
US10368996B2 (en) 2015-01-15 2019-08-06 Depuy Ireland Unlimited Company Assembly tool
WO2017029173A1 (en) * 2015-08-19 2017-02-23 Depuy Ireland Unlimited Company An alignment guide

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Legal Events

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R207 Utility model specification

Effective date: 20040122

R150 Term of protection extended to 6 years

Effective date: 20040317

R151 Term of protection extended to 8 years

Effective date: 20041124

R152 Term of protection extended to 10 years

Effective date: 20060413

R071 Expiry of right