EP3982885A1 - Endoprothesen-revisionsvorrichtung, sortiment aus wenigstens einer endoprothese und wenigstens einer endoprothesen-revisionsvorrichtung sowie revidierte endoprothese - Google Patents
Endoprothesen-revisionsvorrichtung, sortiment aus wenigstens einer endoprothese und wenigstens einer endoprothesen-revisionsvorrichtung sowie revidierte endoprotheseInfo
- Publication number
- EP3982885A1 EP3982885A1 EP20731070.7A EP20731070A EP3982885A1 EP 3982885 A1 EP3982885 A1 EP 3982885A1 EP 20731070 A EP20731070 A EP 20731070A EP 3982885 A1 EP3982885 A1 EP 3982885A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- endoprosthesis
- heat transfer
- revision
- transfer body
- revised
- 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.)
- Pending
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
- A61F2/38—Joints for elbows or knees
- A61F2/3859—Femoral components
-
- 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 for implanting artificial joints
- A61F2/4603—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof
-
- 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 for implanting artificial joints
- A61F2/4603—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/461—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof of knees
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0271—Thermal or temperature sensors
-
- 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
- A61F2002/30448—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using adhesives
- A61F2002/30449—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using adhesives the adhesive being cement
-
- 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
- A61F2/3094—Designing or manufacturing processes
- A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
- A61F2002/30957—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using a positive or a negative model, e.g. moulds
-
- 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 for implanting artificial joints
- A61F2/4603—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2002/4619—Special tools for implanting artificial joints 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 for implanting artificial joints
- A61F2/4603—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2002/4622—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof having the shape of a forceps or a clamp
-
- 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 for implanting artificial joints
- A61F2002/4631—Special tools for implanting artificial joints the prosthesis being specially adapted for being cemented
-
- 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 for implanting artificial joints
- A61F2002/465—Special tools for implanting artificial joints using heating means
-
- 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 for implanting artificial joints
- A61F2002/4688—Special tools for implanting artificial joints having operating or control means
- A61F2002/469—Special tools for implanting artificial joints having operating or control means electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/18—Means for temperature control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/18—Means for temperature control
- B01L2300/1838—Means for temperature control using fluid heat transfer medium
Definitions
- Endoprosthesis revision device assortment of at least one endoprosthesis and at least one endoprosthesis revision device as well as revised endoprosthesis
- the invention relates to an endoprosthesis revision device for the revision of an endoprosthesis from a bone structure of a living being.
- the invention also relates to an assortment of at least one endoprosthesis and at least one such endoprosthesis revision device as well as an endoprosthesis revised by means of such an endoprosthesis revision device.
- a revision of an endoprosthesis is the removal of an endoprosthesis that has already been inserted in a person or animal.
- Reasons for the revision of an endoprosthesis can e.g. aseptic loosening, infection, or periprosthetic fracture, or cases of sliding partner problems, soft tissue defects and dislocations. It is known to remove an endoprosthesis in a purely mechanical way, but this is a particularly complex and stressful process for the patient because of the poor accessibility in particular of the bone cement with which the endoprosthesis is attached to the bone.
- There are already proposals to remove an endoprosthesis by means of ultrasound or the supply of high-frequency signals in a more gentle manner e.g. in DE 40 41 063 A1 or DE 10 2006 005 224 B4.
- the invention is based on the object of showing more universally applicable options for revising an endoprosthesis.
- an endoprosthesis revision device for the revision of an endoprosthesis from a bone structure of a living being, aufwei send a heat transfer body made of metal, which has a heating facility and a heat transfer surface through which the heat fed into the heat transfer body by means of a Beauchungsvor direction is transferred to one of the Outer surface of the endoprosthesis to be revised facing away from the bone structure can be transferred, the heat transfer surface being at least substantially adapted in terms of shape to the shape of the outer surface of the endoprosthesis to be revised.
- the endoprosthesis revision device With the endoprosthesis revision device according to the invention, a comparatively quick removal of the endoprosthesis from the bone structure is possible, please include, for example, in a period of one minute or a few minutes.
- a heat transfer body made of metal which can heat the endoprosthesis relatively quickly from the outside due to its heating option and the heat transfer surface, so that the bone cement with which the endoprosthesis is attached to the Chen structure is attached, can be heated and is easily detachable when the glass transition temperature is reached.
- the endoprosthesis revision device is placed or put on with its heat transfer surface on the outer surface of the endoprosthesis to be revised.
- the heat transfer surface Due to the shape of the heat transfer surface, which is adapted to the shape of the outer surface of the endoprosthesis to be revised, good heat transfer to the endoprosthesis is possible so that it can also be heated quickly.
- the heat transfer surface corresponds, for example, essentially to a type of negative of the outer surface of the endoprosthesis to be revised facing away from the bone structure.
- the endoprosthesis revision device is thus set up to transfer heat from the heat transfer body via its heat transfer surface to the endoprosthesis, e.g. for direct heat transfer or for indirect heat transfer.
- the heat transfer surface of the heat transfer body is in direct contact with the endoprosthesis; in the case of indirect heat transfer, at least one intermediate layer can also be present between the heat transfer surface and the endoprosthesis, e.g. a layer of thermal paste.
- the endoprosthesis revision device is thus based on a heat transfer principle without the need to feed other forms of energy into the endoprosthesis in order to carry out the revision of the endoprosthesis.
- the endoprosthesis revision device is particularly suitable for carrying out the desired revision of the endoprosthesis solely through the transfer of heat from the heat transfer body heated by means of the heating device to the endoprosthesis.
- the invention is particularly suitable for use on endoprostheses which, in contrast to a hip endoprosthesis, are not predominantly anchored within the bone, but are attached to the outside of the bone, i.e. for endoprostheses that essentially envelop part of the bone structure and not vice versa .
- the device according to the invention does not heat the endoprosthesis from the inside, but rather from the outside, that is, over an outer surface of the endoprosthesis to be revised, which protrudes from the bone structure.
- the heat transfer body thus encloses at least part of the endoprosthesis during the revision process.
- the heat transfer body can be made from tool steel, stainless steel, other steel, aluminum and / or Invar, for example.
- the bone cement can, for example, be a bone cement that is customary in medicine, for example a PMMA-based bone cement.
- the possibility of heating the heat transfer body can be implemented in different ways.
- the endoprosthesis revision device or the heat transfer body can have its own heating device, which is arranged on or in the heat transfer body.
- the heat transfer body can also be designed without its own heating device.
- the heating option is that the heat transfer body is suitable for being heated by means of an external heating device, for example by heat transfer from the heating device to a surface of the heat transfer body other than the heat transfer surface with which the heat is transferred to the Endoprosthesis is transferred.
- the heating of the heat transfer body can e.g. done inductively.
- a heating device separate from the heat transfer body can be provided in the form of an induction coil device, which inductively heats the heat transfer body.
- the induction coil device can also be arranged in such a way that it induces an electric current in the metallic endoprosthesis and in this way directly heats the endoprosthesis.
- the induction coil device can be arranged on or in the heat transfer body, for example; it can be integrated into the heat transfer body, for example.
- the heat fed into the heat transfer body by the heating device can be convectively introduced almost homogeneously into the endoprosthesis via the heat transfer surface, possibly via a heat transfer medium explained below.
- the heat is distributed in the direction of the bone cement.
- the area of the bone cement directly connected to the endoprosthesis melts on the surface, while the deeper ones Layers of bone cement protect the bone structure from unwanted heat input.
- the heat transfer body with the endoprosthesis fixed to it is detached from the bone structure. It is advantageous here if the pull-off forces that are exerted on the heat transfer body increase with increasing heating, so that the detachment of the endoprosthesis can be carried out as gently as possible.
- the parts of the endoprosthesis revision device that come into contact with a living being, in particular the heat transfer body, can advantageously be made of sterilizable material.
- a handle On the heat transfer body, in particular on its rear side facing away from the heat transfer surface, a handle can be arranged, for example, by means of which handling is simplified for the user.
- the heat transfer body has one or more receiving chambers for receiving electrically operable heating elements which can be inserted into a respective receiving chamber.
- each heating element can be inserted.
- a heating element can be formed, for example, as a commercially available heating cartridge.
- the receiving chambers can for example have a cylindrical or a conical cross section. This allows the heat transfer body and thus also the endoprosthesis to be heated up quickly.
- the heating device can also have a heating foil which is arranged on the heat transfer body in the region of the heat transfer surface.
- the longitudinal axes of the receiving chambers are arranged essentially parallel to one another. This allows an inexpensive, space-saving accommodation of a large number of Heating elements on the heat transfer body. In addition, a favorable cable routing of the electrical supply lines of the heating elements is made possible.
- the heat transfer body is essentially completely or predominantly covered with a heat insulation layer on its outer surfaces that are not the heat transfer surface.
- the thermal insulation layer can be formed, for example, by a layer of Kera mikschaum, heat-resistant plastic, such as Kevlar, or the materials used for fire protection panels, for example accordingly the products of Brandenburger Isolation Technology, applied to the outer surface of the heat transfer body.
- the thermal insulation layer can have an additional protective coating on the outside, for example an aluminum coating. In this way, a comparatively smooth outer surface of the heat insulation layer can be achieved, so that the endoprosthesis revision device can be sterilized in a simple manner.
- one or more peeling hooks and / or peeling clamps are arranged on the heat transfer body, which are directed to overlap the endoprosthesis to be revised, so that the endoprosthesis to be revised by exerting a tensile force on the heat transfer body the bone structure can be removed.
- One advantage here is that the heat transfer body can be fixed in a simple manner to the endoprosthesis to be revised, so that it does not have to be permanently held by a user during the revision process.
- the puller hooks and / or puller clips can be used to remove the endoprosthesis from the bone structure by means of the aforementioned tensile force.
- At least one temperature sensor is arranged on or in the heat transfer body.
- the temperature sensor can, for example, detect an average temperature value of the heat transfer body and report it to a temperature control device.
- the endoprosthesis revision device has a temperature control device for regulating the average temperature generated by the heating device on the heat transfer body to a target value.
- the target value can for example be in the range from 300 to 350 ° C, for example at about 330 ° C.
- an elastically and / or plastically deformable heat transfer medium is applied to the heat transfer surface of the heat transfer body.
- the device can be used particularly universally, since the adaptation of the heat transfer surface with regard to the shape only has to correspond approximately to the shape of the outer surface. Small deviations can be compensated for by the heat transfer medium.
- the heat transfer medium can ensure good overall heat transfer from the heat transfer surface to the endoprosthesis will.
- the heat transfer medium can, for example, be a thermal paste, for example a silver-based thermoplastic, some other thermally conductive putty that gains ductility when heat is applied, a metal wool (for example steel wool) or a mixture of such materials.
- the area of the heat transfer surface on which the heat transfer medium is arranged can be surrounded on the circumferential side by one or more sealing lips. This prevents the heat transfer medium from escaping from the side.
- the heat transfer surface is predominantly flat or curved in a concave manner.
- the device can be used particularly universally, for example on the sub-elements of a knee joint endoprosthesis assigned to one another.
- the aforementioned object is also achieved by an assortment of at least one endoprosthesis and at least one endoprosthesis revision device of the type described above, the shape of which is at least essentially adapted to the shape of the outer surface of the endoprosthesis facing away from the bone structure.
- the advantages explained above can also be realized in this way.
- the range can be provided directly by manufacturers of endoprostheses. These have corresponding data sets that are determined by the shape of the outer surface of the endoprosthesis.
- the endoprosthesis revision device can easily be implemented with a heat transfer surface which is, so to speak, a counterpart (mirror image) to the outer surface of the endoprosthesis facing away from the bone structure.
- the invention makes it possible in particular to revise the endoprosthesis with little effort and in a very gentle manner on the patient.
- the endoprosthesis is practically free of bone cement immediately after the prosthesis revision.
- Tests have shown that it is easily possible for the revised endoprosthesis to be covered with residual bone cement to the extent of less than 10% immediately after the prosthesis revision without additional cleaning measures.
- the revised endoprosthesis is covered with residual bone cement immediately after the prosthesis revision without additional cleaning measures to less than 5% or less than 2%. Accordingly, the essential part of the bone cement remains on the bone structure, so that a kind of counterprint of the endoprosthesis previously attached there remains.
- FIG. 1 shows a side view of an endoprosthesis revision device 1 and a bone structure 10 with an endoprosthesis 11 attached thereto.
- the bone structure 10 can, for example, be the end of a femur remote from the hip.
- the endoprosthesis 11 is attached to the bone structure 10 by means of bone cement 12 with an inner side which is directed towards the bone structure 10.
- the endoprosthesis is an endoprosthesis that at least partially envelops the end of the bone structure 10.
- the endoprosthesis revision device 1 has a heat transfer body 2.
- the heat transfer body 2 is made of metal or is at least predominantly made of metal.
- several receiving chambers are arranged, in each of which electrically operated Fleizetti 3 are used.
- a temperature sensor 4 is also arranged.
- the meat elements 3 and the temperature sensor 4 are connected to a temperature control device 8 via a cable 9.
- the temperature control device 8 supplies the fleece elements 3 with electrical energy in order to control them specifically to give off heat.
- the temperature control device 8 uses the temperature sensor 4 to record the average temperature generated at the heat transfer body 2.
- the activation of the fleece elements 3 is continued in such a way that the average temperature of the heat transfer body 2 is maintained within predetermined limit values around the target value.
- the heating elements 3 can open into the cable 9 via an angled cable outlet, for example.
- the cable 9 can be guided in a corrugated metal tube.
- the heat transfer body 2 can be comfortably held and operated by the user while it is being heated by the heating device, it is covered with a heat insulation layer 7 on its outer surfaces that are not heat transfer surfaces 13, for example in the area of its rear side.
- the heat transfer body 2 has, on its side facing the endoprosthesis 11, a heat transfer surface 13 which, in terms of shape, is essentially adapted to the shape of the outer surface 14 of the endoprosthesis to be revised.
- An additional heat transfer medium 5 can be applied to the entire heat transfer surface 13 or a part of it, in particular a heat transfer medium which is easily deformable elastically and / or plastically by means of manually applied pressure.
- puller hooks and / or puller brackets 6 can also be arranged, which are set up to reach over the endoprosthesis 11 to be revised. In this way, by exerting a tensile force on the heat transfer body 2, the endoprosthesis 11 can be removed from the bone structure if the bone cement 12 has been liquefied by the heating.
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Transplantation (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
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019116271.8A DE102019116271A1 (de) | 2019-06-14 | 2019-06-14 | Endoprothesen-Revisionsvorrichtung, Sortiment aus wenigstens einer Endoprothese und wenigstens einer Endoprothesen-Revisionsvorrichtung sowie revidierte Endoprothese |
| PCT/EP2020/065675 WO2020249486A1 (de) | 2019-06-14 | 2020-06-05 | Endoprothesen-revisionsvorrichtung, sortiment aus wenigstens einer endoprothese und wenigstens einer endoprothesen-revisionsvorrichtung sowie revidierte endoprothese |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3982885A1 true EP3982885A1 (de) | 2022-04-20 |
Family
ID=71016552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20731070.7A Pending EP3982885A1 (de) | 2019-06-14 | 2020-06-05 | Endoprothesen-revisionsvorrichtung, sortiment aus wenigstens einer endoprothese und wenigstens einer endoprothesen-revisionsvorrichtung sowie revidierte endoprothese |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3982885A1 (de) |
| DE (1) | DE102019116271A1 (de) |
| WO (1) | WO2020249486A1 (de) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2751832A1 (de) * | 1977-11-19 | 1979-05-23 | Hanning Adolf | Kuehlvorrichtung zum kuehlen von knochenzement bei der implantation von endoprothesen |
| US4702236A (en) * | 1986-06-02 | 1987-10-27 | Samih Tarabichy | Revision arthroplasty method and related instrument |
| DE4041063A1 (de) * | 1990-12-20 | 1992-06-25 | Siemens Ag | Vorrichtung zum entfernen von implantierten gelenkprothesen |
| GB9306380D0 (en) * | 1993-03-26 | 1993-05-19 | Young Michael J R | Method and apparatus for removal of bone cement and ostealprostheses |
| GB2277448A (en) * | 1993-04-19 | 1994-11-02 | Paul Albert Thodiyil | Ultrasound apparatus and method for securing or removing a prosthesis |
| DE102006005224B4 (de) * | 2006-01-31 | 2008-09-04 | P + P Medical Gmbh | Vorrichtung zur Trennung einer aus einem elektrisch leitfähigen Material bestehenden Gelenkendoprothese von biologischen und/oder biokompatiblen Materialien |
| US8419640B1 (en) * | 2008-08-21 | 2013-04-16 | Subrata Saha | Removal of bone cement and implants by ultrasonic vibration methods |
| WO2016122938A1 (en) * | 2015-01-26 | 2016-08-04 | Rush University Medical Center | Implant removal devices and methods of use thereof |
| DE102015121779B4 (de) * | 2015-12-15 | 2018-03-29 | Gottfried Wilhelm Leibniz Universität Hannover | Revisionsfähige Endoprothese |
-
2019
- 2019-06-14 DE DE102019116271.8A patent/DE102019116271A1/de not_active Withdrawn
-
2020
- 2020-06-05 EP EP20731070.7A patent/EP3982885A1/de active Pending
- 2020-06-05 WO PCT/EP2020/065675 patent/WO2020249486A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102019116271A1 (de) | 2020-12-17 |
| WO2020249486A1 (de) | 2020-12-17 |
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