DE20321246U1 - Set for creating a metatarsophalangeal joint - Google Patents
Set for creating a metatarsophalangeal joint Download PDFInfo
- Publication number
- DE20321246U1 DE20321246U1 DE20321246U DE20321246U DE20321246U1 DE 20321246 U1 DE20321246 U1 DE 20321246U1 DE 20321246 U DE20321246 U DE 20321246U DE 20321246 U DE20321246 U DE 20321246U DE 20321246 U1 DE20321246 U1 DE 20321246U1
- Authority
- DE
- Germany
- Prior art keywords
- implant
- metatarsus
- set according
- cap
- stem
- 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
Links
- 210000000878 metatarsophalangeal joint Anatomy 0.000 title claims abstract description 4
- 239000007943 implant Substances 0.000 claims abstract description 30
- 210000003789 metatarsus Anatomy 0.000 claims abstract description 18
- 210000001255 hallux Anatomy 0.000 claims abstract description 5
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 210000000988 bone and bone Anatomy 0.000 description 13
- 241000207961 Sesamum Species 0.000 description 5
- 235000003434 Sesamum indicum Nutrition 0.000 description 5
- 208000008822 Ankylosis Diseases 0.000 description 4
- 206010023198 Joint ankylosis Diseases 0.000 description 4
- 210000002435 tendon Anatomy 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 210000003800 pharynx Anatomy 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 210000000845 cartilage Anatomy 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 210000002808 connective tissue Anatomy 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 210000002683 foot Anatomy 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000008407 joint function Effects 0.000 description 1
- 210000001872 metatarsal bone Anatomy 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 210000000824 sesamoid bone Anatomy 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
- A61F2/4225—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for feet, e.g. toes
-
- 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
- A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
- A61F2002/30649—Ball-and-socket joints
-
- 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
- A61F2/30907—Nets or sleeves applied to surface of prostheses or in cement
- A61F2002/30909—Nets
-
- 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
- A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
- A61F2/4225—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for feet, e.g. toes
- A61F2002/4233—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for feet, e.g. toes for metatarso-phalangeal joints, i.e. MTP joints
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (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
Set zur Erstellung eines Großzehengrundgelenkes, mindestens umfassend ein kappenförmiges, ballige Außenkonturen aufweisendes, auf den Metatarsus-Stumpf (1) der Großzehe zu setzendes und der Form von zwei Kugelteilabschnitten nachgebildetes Implantat (2) mit einem an der Basiskante (3) angeformten, in einem Kreissegment von 30° bis 180° umlaufenden Schild (4).set for creating a metatarsophalangeal joint, at least comprising a cap-shaped, spherical outer contours to the metatarsus stump (1) of the great toe putting and the shape of two ball sections imitated Implant (2) with a molded on the base edge (3), in one Circle segment from 30 ° to 180 ° revolving Shield (4).
Description
Die Erfindung betrifft ein Set zur Erstellung eines Großzehengrundgelenkes.The The invention relates to a set for creating a metatarsophalangeal joint.
In der Bundesrepublik Deutschland werden jährlich ca. 200.000 Operationen am Großzehengrundgelenk vorgenommen. Hierzu gibt es in der Praxis eine Reihe von Implantaten. Wenn diese ihre Gelenkfunktion auch zufriedenstellend wahrnehmen, besteht die Gefahr des Einsteifens des versorgten Gelenkes zwischen dem Metatarsus (Os metatarsale I) und der Grundphalanx (Phalanx proximalis hallucis) aufgrund einer Verklebung zwischen den so genannten Sesambeinen und dem umgebenenden Bindegewebe und dem bearbeiteten Knochen. Es besteht also die Gefahr einer Ankylose.In The Federal Republic of Germany annually receives about 200,000 operations at the big toe base joint performed. There are a number of implants in practice. If these also perform their joint function satisfactorily, there is the danger of stiffening the supplied joint between the Metatarsus (metatarsal bone I) and the phalanx proximalis (phalanx proximalis hallucis) due to a bond between the so-called sesame-legs and the surrounding connective tissue and the processed bone. It So there is a danger of ankylosis.
Vor diesem Hintergrund ist es die Aufgabe der vorliegenden Erfindung, ein eingangs genanntes Set anzugeben, welches der Gefahr einer Ankylose entgegentritt.In front In this context, it is the object of the present invention to specify a set mentioned at the beginning, which counteracts the danger of ankylosis.
Gelöst wird die Aufgabe durch ein Set gemäß dem Anspruch 1. Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.Is solved the task by a set according to the claim 1. Advantageous developments emerge from the dependent claims.
Demgegemäß weist das Set mindestens ein kappenförmiges, ballige Außenkonturen aufweisendes, auf den Metatarsus-Stumpf der Großzehe zu setzendes und der Form von zwei Kugelteilabschnitten nachgebildetes Implantat mit einem an der Basiskante angeformten, in einem Kreissegment von 30° bis 180° umlaufenden Schild auf.Accordingly, points the set at least one cap-shaped, spherical outer contours to be placed on the metatarsus stump of the big toe and the Form of two ball sections reproduced implant with a molded on the base edge, in a circular segment of 30 ° to 180 ° encircling Shield up.
Das Set weist also als Grundelement eine Art Kappenprothese auf, welche wie eine Gelenkkugel gegenüber der Grundphalanx beweglich ist. Entscheidendes Merkmal für die Langzeitstabilität ist das erwähnte Schild. Dieses wirkt mit den Sesambeinen und der Beugesehne zusammen, und zwar dergestalt, dass die Sesambeine mit dem bearbeiteten Knochen nicht in Kontakt kommen. Die Sesambeine und die Beugesehne werden vielmehr auf der Oberfläche des Implantates geführt.The Set therefore has as a basic element a kind of cap prosthesis, which like a ball of joints opposite the Grundphalanx is mobile. Decisive feature for the long-term stability is the mentioned Sign. This works together with the sesambas and the flexor tendon, in such a way that the sesame legs with the processed bone do not come in contact. The sesame legs and the flexor tendon will be rather on the surface guided the implant.
Der Metatarsus muss vor dem Aufsetzen der Kappenprothese mit geeigneten Werkzeugen, beispielsweise einer Fräse bearbeitet werden, woraus die Gefahr einer Ankylose resultieren würde, wäre ein Schild nicht vorgesehen. Bei Beugung des Gelenkes gleiten die Sesambeine auf dem Schild und auf der Kappenprothese entlang, zwischen sich die Beugesehne einfassend.Of the Metatarsus must be used before fitting the cap prosthesis with appropriate Tools, such as a milling machine to be processed, from which the Danger of ankylosis would result, a sign would not be provided. When flexing the joint, the sesame legs glide on the shield and along the cap prosthesis, between them the flexor tendon.
Der Knochen sollte so bearbeitet werden, dass das Schild bündig mit dem Knochen abschließt, also keine Stufe von dem Schild hin zum Knochen entsteht. Hierdurch wird das Entstehen hoher Kräfte im Bereich der Anlage des Schildes am Knochen vermieden.Of the Bones should be worked out so that the shield is flush with completes the bone, so there is no step from the shield to the bone. This will the emergence of high forces in the Avoiding the area of the shield's attachment to the bone.
Das Grundelement des erfindungsgemäßen Sets ist also eine Hemiprothese. Dabei läuft die Kappenprothese gegen die natürliche Konkavität in der Grundphalanx. Da das Implantat vorzugsweise aus einem körperverträglichen Metall besteht, läuft also Metall gegen Knochen/Knorpel.The Basic element of the kit according to the invention So it's a hemiprosthesis. The cap prosthesis runs against it The natural concavity in the pharynx. Since the implant is preferably made of a biocompatible Metal exists, runs So metal against bone / cartilage.
Zur weiteren Stabilisierung des Implantates auf dem Metatarsus-Stumpf ist vorzugsweise vorgesehen, dass das Implantat einen vom Polbereich zur konkaven offenen Seite abragenden, in den Metatarsus-Stumpf zu setzenden Stiel aufweist. Dementsprechend muss in diesem Falle der Metatarsus ausgebohrt oder ausgefräst werden, damit der Stiel in den Knochen hineingreifen kann.to further stabilization of the implant on the metatarsus stump it is preferably provided that the implant from the Polbereich protruding into the concave open side, into the metatarsus stump having to be set stem. Accordingly, in this case the metatarsus are drilled or milled out so that the stalk can reach into the bones.
Gemäß einer noch weiteren bevorzugten Ausführungsform ist vorgesehen, dass der Boden des Implantates eine dreidimensionale offenmaschige Raumnetzstruktur auf seiner Oberfläche aufweist. In diese und durch diese hindurch wachsen Knochentrapekel und sichern den Sitz der Kappenprothese auf dem Metatarsus-Stumpf. Hierdurch wird eine hohe Langzeitstabilität erreicht.According to one yet another preferred embodiment is provided that the bottom of the implant is a three-dimensional has open-mesh spatial network structure on its surface. In this and Bone traps grow through them and secure the seat the cap prosthesis on the metatarsus stump. This will be a high long-term stability reached.
Dem gleichen Ziel dient eine Maßnahme einer noch weiteren Weiterbildung des Implantates, bei dem die Oberfläche des Stiels zumindest teilweise mit einer dreidimensionalen offenmaschigen Raumnetzstruktur versehen ist. Auch in diese und durch diese hindurch wachsen Knochentrapekel und sorgen so für eine stabile Sekundärfixation.the same purpose serves a measure a still further development of the implant, wherein the surface of the Stems at least partially with a three-dimensional open-meshed Space network structure is provided. Also in this and through this grow bone trabeculae and thus ensure a stable secondary fixation.
Es kann bevorzugt vorgesehen sein, dass der Stiel einen ovalären Querschnitt aufweist. Diese Ausbildung dient der Rotationsstabilität der Kappenprothese.It may preferably be provided that the stem has an oval cross-section having. This training serves the rotational stability of the cap prosthesis.
Gemäß einer
anderen Ausführungsform weist
das Set zusätzlich
einen in die Grundphalanx einsetzbaren Phalanx-Stiel sowie einen
mit diesem verbindbaren Einsatz als Gleitpartner für das kappenförmige Implantat
mit einer zum Metatarsus-Stumpf hin offenen, der Form des Implantates angepassten
Konkavität.
Aus diesem Set kann demnach eine Totalprothese erstellt werden,
bei der das kappenförmige
Implantat sich gegenüber
einem künstlichen
Gleitpartner bewegen kann. Dieser Gleitpartner kann beispielsweise
aus Polyethylen hergestellt sein. Es kommt auch ein Gleitpartner
in Betracht, der aus einer Kompositkeramik (
Besonders vorteilhaft ist es, wenn auch die Oberfläche des Phalanx-Stiels zumindest teilweise eine dreidimensionale offenmaschige Raumnetzstruktur aufweist, in die und durch die hindurch wiederum Knochentrapekel wachsen können und so den Sitz des Stiels in der Grundphalanx sichert.It is particularly advantageous if the surface of the phalanx stem also at least partially has a three-dimensional open-mesh spatial network structure into and through which which can grow bone trabeculae and thus secure the seat of the stem in the Grundphalanx.
Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen näher erläutert. Hier zeigt:The The invention will be explained in more detail with reference to embodiments. Here shows:
Nachfolgend sind gleiche Teile mit denselben Bezugszeichen versehen.following the same parts are provided with the same reference numerals.
Einen
ersten Überblick
verschafft
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20321246U DE20321246U1 (en) | 2003-12-08 | 2003-12-08 | Set for creating a metatarsophalangeal joint |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20321246U DE20321246U1 (en) | 2003-12-08 | 2003-12-08 | Set for creating a metatarsophalangeal joint |
| DE2003158307 DE10358307A1 (en) | 2003-12-08 | 2003-12-08 | Set for production of large toe bottom joint, has cap-shaped spherical outer contours which can be placed on metatarsus stump of large toe along with implant having two spherical sections formed along bottom edge of stump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE20321246U1 true DE20321246U1 (en) | 2006-06-14 |
Family
ID=36371066
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE20321246U Expired - Lifetime DE20321246U1 (en) | 2003-12-08 | 2003-12-08 | Set for creating a metatarsophalangeal joint |
| DE2003158307 Withdrawn DE10358307A1 (en) | 2003-12-08 | 2003-12-08 | Set for production of large toe bottom joint, has cap-shaped spherical outer contours which can be placed on metatarsus stump of large toe along with implant having two spherical sections formed along bottom edge of stump |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2003158307 Withdrawn DE10358307A1 (en) | 2003-12-08 | 2003-12-08 | Set for production of large toe bottom joint, has cap-shaped spherical outer contours which can be placed on metatarsus stump of large toe along with implant having two spherical sections formed along bottom edge of stump |
Country Status (1)
| Country | Link |
|---|---|
| DE (2) | DE20321246U1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110184528A1 (en) | 2010-01-22 | 2011-07-28 | Osteomed L.P. | Resurfacing Implant |
| US8900318B2 (en) | 2011-09-28 | 2014-12-02 | Linares Medical Devices, Llc | Implantable hallux joint assembly with spherical inter-support |
| US20230190485A1 (en) | 2021-12-18 | 2023-06-22 | Richard Marks | Metatarsal arthroplasty devices, systems, and methods |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4787908A (en) * | 1987-04-30 | 1988-11-29 | Queen's University At Kingston | Metatarsal-phalangeal replacement joint |
| WO1996037169A1 (en) * | 1995-05-22 | 1996-11-28 | Plus Endoprothetik Ag | Endoprosthesis for a metatarso-phalangeal joint |
-
2003
- 2003-12-08 DE DE20321246U patent/DE20321246U1/en not_active Expired - Lifetime
- 2003-12-08 DE DE2003158307 patent/DE10358307A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE10358307A1 (en) | 2006-06-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R207 | Utility model specification |
Effective date: 20060720 |
|
| R150 | Term of protection extended to 6 years |
Effective date: 20070115 |
|
| R151 | Term of protection extended to 8 years |
Effective date: 20100108 |
|
| R081 | Change of applicant/patentee |
Owner name: OLMS, KAI-HINRICH, DR., DE Free format text: FORMER OWNER: ESKA IMPLANTS GMBH & CO.KG, 23556 LUEBECK, DE Effective date: 20101215 |
|
| R152 | Term of protection extended to 10 years | ||
| R082 | Change of representative |
Representative=s name: DEHNS, GB Representative=s name: DEHNS, LONDON, GB |
|
| R152 | Term of protection extended to 10 years |
Effective date: 20120116 |
|
| R081 | Change of applicant/patentee |
Owner name: OLMS, KAI-HINRICH, DR., DE Free format text: FORMER OWNER: ORTHODYNAMICS GMBH, 23556 LUEBECK, DE Effective date: 20120222 |
|
| R082 | Change of representative |
Representative=s name: DEHNS, GB Effective date: 20120222 |
|
| R071 | Expiry of right | ||
| R071 | Expiry of right |