PL74122Y1 - Acetabular cup of the hip joint endoprosthesis - Google Patents

Acetabular cup of the hip joint endoprosthesis

Info

Publication number
PL74122Y1
PL74122Y1 PL132413U PL13241322U PL74122Y1 PL 74122 Y1 PL74122 Y1 PL 74122Y1 PL 132413 U PL132413 U PL 132413U PL 13241322 U PL13241322 U PL 13241322U PL 74122 Y1 PL74122 Y1 PL 74122Y1
Authority
PL
Poland
Prior art keywords
hip joint
cup
joint endoprosthesis
porous
bone
Prior art date
Application number
PL132413U
Other languages
Polish (pl)
Other versions
PL132413U1 (en
Inventor
Oliwier Teodorowski
Martyna Loskot
Mateusz Pawlik
Original Assignee
Polvet Healthcare Teodorowski Spola Jawna
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 Polvet Healthcare Teodorowski Spola Jawna filed Critical Polvet Healthcare Teodorowski Spola Jawna
Priority to PL132413U priority Critical patent/PL74122Y1/en
Publication of PL132413U1 publication Critical patent/PL132413U1/en
Publication of PL74122Y1 publication Critical patent/PL74122Y1/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
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • 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
    • A61F2/34—Acetabular cups
    • A61F2002/3412—Acetabular cups with pins or protrusions, e.g. non-sharp pins or protrusions projecting from a shell surface
    • A61F2002/342—Acetabular cups with pins or protrusions, e.g. non-sharp pins or protrusions projecting from a shell surface the outer shell having circumferential protrusions parallel to the equatorial plane, e.g. circumferential fins or wings

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

Rozwiązaniem według wzoru użytkowego jest panewka endoprotezy stawu biodrowego, która umożliwia zwiększenie skuteczności trwałego połączenia z kością poprzez lepsze jej wrastanie i powodującą lepszą migrację komórek. Panewka endoprotezy stawu biodrowego posiada monolityczny korpus (1) z materiału polimerowego w kształcie czaszy, który na stronie zewnętrznej ma niejednorodna, porowatą powierzchnię (2), w tym pomiędzy zwojami (6) złożoną z połączonych ze sobą beleczek (3) w formie ziaren nieregularnych i kanalików (3') o zarysie esowatym.The solution according to the utility model is a hip joint endoprosthesis cup, which enables increased effectiveness of a permanent connection with bone through improved bone ingrowth and cell migration. The hip joint endoprosthesis cup has a monolithic body (1) made of a cup-shaped polymer material, which has a heterogeneous, porous surface (2) on the outer surface, including between the coils (6) composed of interconnected trabeculae (3) in the form of irregular grains and channels (3') with a sigmoid outline.

Description

Opis wzoru Przedmiotem wzoru uzytkowego jest panewka endoprotezy stawu biodrowego, majaca zastoso- wanie do operacyjnego odnowienia funkcji stawu biodrowego, która mocuje sie w gniezdzie tkanki kost- nej „na wcisk". Znana jest do tego celu z europejskiego opisu patentowego EP0179736B1 sztuczna panewka, która mozna wkrecic w kosc, zweza sie w kierunku wkrecania i posiada samogwintujace boki nosne tworzace gwint. Obszar pozostawiony wolny jako rowek tnacy ma co najmniej jedno wglebienie z cze- sciami powierzchni, które sa skierowane zasadniczo poprzecznie do kierunku ruchu boków nosnych podczas wkrecania, lub ze obszar pozostawiony jako rowek skrawajacy ma co najmniej jedno takie wglebienie z co najmniej jedna strefa powierzchni, która posiada chropowatosc. Znany jest sztuczny staw z amerykanskiego opisu patentowego US4883491A1, gdzie proteza zawiera miseczke do stosowania jako czesc sztucznego stawu kulowego i panewki. Miseczka ma kulista powierzchnie zewnetrzna, na której jest uformowany gwint do polaczenia z koscia, wspomniana strona zewnetrzna zawiera czesc kopulowa i czesc podstawy, czesc kopulowa jest pokryta powloka porowata, a czesc podstawy zawiera gwint srubowy i wiele kolumn pokrytych powloka porowata, które rozciagaja sie od czesci kopulowej do obszaru podstawy kubka, w którym kielich ma najwieksza szerokosc, ze- wnetrzna powierzchnia kolumny z powloka porowata lezy zasadniczo na tej samej kuli co zewnetrzna powierzchnia kopuly z powloka porowata, przy czym wspomniany gwint sruby jest wolny od porowatej powloki i jest przerwany przez kolumny z powloka porowata, tak aby wytworzyc naprzemienny wzór kolumn gwintowanych przylegajacych do kolumn z powloka porowata, kolumny gwintowane zapewnia- jace wstepne mechaniczne zamocowanie protezy do kosci oraz kolumny pokryte porowata powloka umozliwiajace dlugotrwale zamocowanie poprzez wrastanie i przebudowe kosci. Znane jest równiez do tego celu rozwiazanie z europejskiego opisu patentowego EP3111892B1, gdzie implant ma, przynajmniej czesciowo, strukture powierzchni zawierajaca wzniesienia i wglebienia, gdzie zaglebienia maja strefy z porowata powloka, przy czym wzniesienia maja strefy niepowleczone, które przylegaja do stref pokrytych w zaglebieniach. Wzniesienia maja powlekane strefy, które przyle- gaja do powlekanych stref w zaglebieniach, przy czym grubosc warstwy porowatej powloki jest mniej sza na wzniesieniach niz w zaglebieniach. Wzniesienia maja powleczone strefy, które przylegaja do po- wleczonych stref w zaglebieniach, przy czym powloka jest mniej porowata na wzniesieniach niz w za- glebieniach. Wzniesienia maja powlekane strefy, które przylegaja do pokrytych stref w zaglebieniach, przy czym odpornosc na scieranie porowatej powloki jest wieksza na wzniesieniach niz w zaglebieniach i gdzie porowata powloka rozciaga sie zgodnie z konturem wglebien. Znany jest z polskiego opisu patentowego PL226891B1 porowaty implant polimerowy, który wedlug przykladu wykonania zastosowany zostal w otworze kosci biodrowej królika. Struktura nosna implantu wykonana zostala biodegradowalnego materialu polimerowego o porowatosci wynoszacej od 40% do 80%. Implant zostal wytworzony metoda druku przestrzennego. Powierzchnia struktury nosnej implantu pokryta zostala warstwa o grubosci 200 nm, dzieki której proliferacja komórek na im- plancie polimerowym byla wyzsza niz na analogicznym rusztowaniu polimerowym pozbawionym ta- kiej warstwy. Znany jest z amerykanskiego US20180200062A1 implant, w szczególnosci implant panewkowy, przeznaczony do wszczepiania w kosc, ma, przynajmniej czesciowo, strukture powierzchniowa z wypu- klymi czesciami i wglebieniami. Wglebienia maja strefy pokryte porowata powloka. Uniesione czesci albo nie sa w ogóle powlekane, albo sa powlekane w taki sposób, ze powloka ma w tych obszarach cienka warstwe lub wieksza odpornosc na scieranie. W ten sposób osiaga sie lepsza odpornosc na scie- ranie, gdy implant jest wprowadzany do kosci. Celem wzoru uzytkowego jest opracowanie konstrukcji panewki endoprotezy stawu biodrowego, która umozliwia zwiekszenie skutecznosci trwalego polaczenia z koscia poprzez lepsze jej wrastanie i powodujaca lepsza migracje komórek. Istota panewki endoprotezy stawu biodrowego wedlug wzoru uzytkowego posiadajacej monoli- tyczny korpus z materialu polimerowego w ksztalcie czaszy, który na stronie zewnetrznej ma niejedno- rodna, porowata powierzchnie otwarta i zaopatrzony jest od strony podstawy w gwint zewnetrzny z dwoma lub trzema zwojami poprzedzielany wzdluznymi pasami rozdzielajacymi, polega na tym, ze niejednorodna porowata powierzchnia w czesci gwintu zewnetrznego korpusu zajmuje powierzchnie pomiedzy zwojami laczac sie z porowata powierzchnia na wzdluznych pasach rozdzielajacych. Cala3 porowata powierzchnia korpusu jest w zakresie 800 -1200 µm i o grubosci warstwy 1 -2,5 mm, a stano- wia ja kanaliki i nieregularnie ulozone beleczki w formie ziaren nieregularnych o usrednionej wielkosci 60 mikrometrów, których zarysy maja ksztalt esowaty, skrecony przestrzennie wokól dluzszej osi, a ich grubosc wynosi 800 -1200 µm. Rozwiazanie wedlug wzoru uzytkowego, dzieki wypelnieniu powierzchni korpusu, w tym pomie- dzy zwojami gwintu, porowata powierzchnia o zakresie 800 -1200 µm i grubosci warstwy 1 -2,5 mm, zlozona z polaczonych ze soba beleczek w formie ziaren nieregularnych o usrednionej wielkosci 60 mi- krometrów umozliwia zwiekszenie powierzchni styku i adhezji z komórkami materialu biologicznego oraz sprzyja nanoszeniu hodowli komórkowych. Badania wykazaly, ze powierzchnia porowata panewki posiada zwiekszona energie powierzch- niowa w odniesieniu do surowego materialu budulcowego rzedu 61 mN/m, co warunkuje zwiekszenie zwilzalnosci powierzchni implantu, w porównaniu do panewki wykonanej z PEEK (polieteroeteroketon), gdzie energia powierzchniowa wyniosla ok. 44 mN/m, czy wykonanej z PA6 (poliamid 6), gdzie energia powierzchniowa wyniosla ok. 45 mN/m. Przedmiot wzoru uzytkowego jest uwidoczniony na rysunku, na którym fig. 1 przedstawia pa- newke endoprotezy stawu biodrowego w widoku aksonometrycznym, fig. 2 – panewke w przekroju po- dluznym, fig. 3 – wycinek panewki w widoku z przodu. Panewka endoprotezy stawu biodrowego posiada monolityczny korpus 1 z materialu polimero- wego w ksztalcie czaszy, który na stronie zewnetrznej, ma niejednorodna, porowata powierzchnie 2 zlozona z polaczonych ze soba beleczek 3 w formie ziaren nieregularnych, których zarysy maja ksztalt esowaty, skrecony przestrzennie wokól dluzszej osi i kanalików 3'. Panewka od strony podstawy 4 ma gwint 5 z trzema zwojami 6 poprzedzielany wzdluznymi pasami rozdzielajacymi 7. PL PL PLDescription of the model The subject of the utility model is a hip joint endoprosthesis cup, applicable for the surgical restoration of the hip joint function, which is mounted in the bone tissue socket by means of a "press-fit". For this purpose, an artificial cup is known from the European patent specification EP0179736B1, which can be screwed into the bone, is tapered in the direction of screwing in and has self-tapping bearing sides forming a thread. The area left free as a cutting groove has at least one recess with surface parts that are directed substantially transversely to the direction of movement of the bearing sides during screwing in, or that the area left free as a cutting groove has at least one such recess with at least one surface zone that has a roughness. An artificial joint is known from U.S. Patent No. US4883491A1, where the prosthesis includes a cup for use as part of an artificial ball and socket joint. The cup has a spherical outer surface on which a thread is formed for connection with bone, said outer surface includes a dome portion and a base portion, the dome portion is covered with a porous coating, and the base portion includes a screw thread and a plurality of columns covered with a porous coating that extend from the dome portion to a region of the base of the cup wherein the cup has its greatest width, the outer surface of the column with the porous coating lying substantially on the same sphere as the outer surface of the dome with the porous coating, said screw thread being free from the porous coating and interrupted by the columns with the porous coating so as to produce an alternating pattern of threaded columns adjacent to the columns with the porous coating, the threaded columns providing initial mechanical attachment of the prosthesis to the bone, and the columns covered with the porous coating enabling long-term attachment through bone ingrowth and remodeling. A solution for this purpose is also known from European patent EP3111892B1, wherein the implant has, at least in part, a surface structure comprising elevations and depressions, wherein the depressions have zones with a porous coating, the elevations having uncoated zones that are adjacent to coated zones in the depressions. The elevations have coated zones that are adjacent to coated zones in the depressions, wherein the thickness of the porous coating layer is less on the elevations than on the depressions. The elevations have coated zones that are adjacent to coated zones in the depressions, wherein the coating is less porous on the elevations than on the depressions. The elevations have coated zones that adhere to the coated zones in the depressions, with the abrasion resistance of the porous coating being greater on the elevations than in the depressions, where the porous coating extends along the contour of the depressions. A porous polymer implant is known from Polish patent description PL226891B1, which, according to an example embodiment, was used in the hip bone foramen of a rabbit. The implant's supporting structure was made of a biodegradable polymer material with a porosity of 40% to 80%. The implant was manufactured using a 3D printing method. The surface of the implant's supporting structure was covered with a 200 nm thick layer, which resulted in higher cell proliferation on the polymer implant than on a similar polymer scaffold without such a layer. Known from US patent US20180200062A1, an implant, specifically an acetabular implant, intended for implantation in bone has, at least partially, a surface structure with raised portions and recesses. The recesses have zones covered with a porous coating. The raised portions are either not coated at all or are coated in such a way that the coating in these areas has a thin layer or greater abrasion resistance. This achieves improved abrasion resistance when the implant is inserted into the bone. The purpose of the utility model is to develop a hip joint acetabular implant design that allows for increased effectiveness of a permanent connection to the bone through improved bone ingrowth and cell migration. The essence of the hip joint endoprosthesis cup according to the utility model having a monolithic body made of a polymeric material in the shape of a bowl, which on the external side has a heterogeneous, porous open surface and is provided on the base side with an external thread with two or three turns separated by longitudinal separating strips, consists in the fact that the heterogeneous porous surface in the part of the external thread of the body occupies the area between the turns, connecting with the porous surface on the longitudinal separating strips. The entire porous surface of the body is in the range of 800-1200 µm and has a layer thickness of 1-2.5 mm, and is composed of channels and irregularly arranged trabeculae in the form of irregular grains with an average size of 60 micrometers, the outlines of which are S-shaped, spatially twisted around the longer axis, and their thickness is 800-1200 µm. The solution according to the utility model, thanks to filling the surface of the body, including between the thread turns, with a porous surface in the range of 800-1200 µm and a layer thickness of 1-2.5 mm, composed of interconnected bars in the form of irregular grains with an average size of 60 micrometers, enables an increase in the contact surface and adhesion with the cells of the biological material and facilitates the application of cell cultures. The tests have shown that the porous surface of the acetabulum has an increased surface energy of 61 mN/m in relation to the raw building material, which determines the increased wettability of the implant surface, compared to acetabulum made of PEEK (polyetheretherketone), where the surface energy was approximately 44 mN/m, or made of PA6 (polyamide 6), where the surface energy was approximately 45 mN/m. The subject of the utility model is shown in the drawing, in which Fig. 1 shows the acetabulum of a hip joint endoprosthesis in an axonometric view, Fig. 2 – the acetabulum in a longitudinal cross-section, Fig. 3 – a section of the acetabulum in a front view. The acetabulum of the hip joint endoprosthesis has a monolithic body 1 made of a polymeric material in the shape of a bowl, which on the outside has a non-uniform, porous surface 2 composed of interconnected trabeculae 3 in the form of irregular grains, the outlines of which are S-shaped, spatially twisted around the longer axis and channels 3'. The acetabulum on the base side 4 has a thread 5 with three turns 6 separated by longitudinal dividing strips 7. PL PL PL

PL132413U 2022-01-26 2022-01-26 Acetabular cup of the hip joint endoprosthesis PL74122Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL132413U PL74122Y1 (en) 2022-01-26 2022-01-26 Acetabular cup of the hip joint endoprosthesis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL132413U PL74122Y1 (en) 2022-01-26 2022-01-26 Acetabular cup of the hip joint endoprosthesis

Publications (2)

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PL132413U1 PL132413U1 (en) 2025-05-19
PL74122Y1 true PL74122Y1 (en) 2025-10-13

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0065482A2 (en) * 1981-05-18 1982-11-24 Mecron Medizinische Produkte Gmbh Artificial hip socket
US4883491A (en) * 1986-01-21 1989-11-28 Joint Medical Products Corporation Porous-coated artificial joints
JP2012115368A (en) * 2010-11-30 2012-06-21 Japan Medical Materials Corp Component for acetabular cup
US20180200062A1 (en) * 2015-06-30 2018-07-19 Jossi Holding Ag Implant and method for coating an implant main body

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0065482A2 (en) * 1981-05-18 1982-11-24 Mecron Medizinische Produkte Gmbh Artificial hip socket
US4883491A (en) * 1986-01-21 1989-11-28 Joint Medical Products Corporation Porous-coated artificial joints
JP2012115368A (en) * 2010-11-30 2012-06-21 Japan Medical Materials Corp Component for acetabular cup
US20180200062A1 (en) * 2015-06-30 2018-07-19 Jossi Holding Ag Implant and method for coating an implant main body

Also Published As

Publication number Publication date
PL132413U1 (en) 2025-05-19

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