Unipolar endoprosthesis of hip joint
(Однополюсной эндопротез тазобедренного сустава конструкции С.В. Архипова)
Patent Application RU94038343A
Inventor
Сергей Васильевич Архипов
Original Assignee
Sergey Vasilyevich Arkhipov
Application 94038343/14A events
1994-10-11 Application filed by С.В. Архипов
1994-10-11 Priority to RU94038343/14A
1996-08-20 Publication of RU94038343A
Claims
1. Unipolar endoprosthesis of hip joint of
the design of S.V. Arkhipov comprising a removable head and a leg, fixedly connected
by means of conjugated conical surfaces, in the form of a rod having a shank in
the distal part, and in the proximal part, a support platform with a neck fixed
to it at an angle to the longitudinal axis of the leg, having a conical surface
connected to the corresponding conical hole in the removable head,
characterized in that the removable head contains a through hole through which
a flexible artificial ligament of the head passes, one end motionless with of
the connections with the element attaching ligaments to bones and the other
with a leg, it is fixedly attached by its ends artificial ligament flexible
legs which their second ends are attached to the element attaching ligaments to
bones, wherein one number of legs and a tangles.
2. The endoprosthesis according to claim 1,
characterized in that the removable head from the side of its connection with
the neck is covered by a flexible artificial ligament in the form of a loop,
with dimensions that ensure its retention on the head, and fixed at its ends to
the ligament fastening element to the bones.
3. The endoprosthesis according to claim 1,
2, characterized in that a groove is made on the surface of the conical opening
of the removable head, in which a flexible artificial ligament of the head
passing through the through hole in the removable head is fixedly fixed between
the conical surface of the neck and the surface of the groove.
4. The endoprosthesis according to claim 1-3,
characterized in that the leg has a cavity, and the shank is made in the form
of a collet, which includes a screw with a spacer wedge, the screw protruding
above the surface of the proximal end of the leg, on the outer surface of the
shank are made of rotational screw grooves , oblique transverse protrusions and
depressions.
5. Endoprosthesis according to 1-4 were,
characterized in that the collet has three lobes formed with three
screw-sectional view taken along the longitudinal axes of symmetry derotation
helical grooves, the width of the grooves is made commensurate with a lobe
width.
6. Endoprosthesis according p.1-5,
characterized in that the proximal portion of the stem has a porous coating
thereon and arranged derotation protrusions.
7. Endoprosthesis according p.1-6,
characterized in that the proximal portion of the stem has tapped holes.
8. Endoprosthesis according p.1-7,
characterized in that the support platform has two components, one of which is
perpendicular to the longitudinal axis of the leg and the other of the
longitudinal axis of the neck, and the support platform covers the top end of
the proximal femur.
9. Endoprosthesis according p.1-8,
characterized in that the fastening element is formed ligaments to bones in the
form of a rod having at one end of the longitudinal slits, and at the other end
through a transverse bore and made of a metal with shape memory.
10. The endoprosthesis according to claim 1 to
9, characterized in that the proximal part of the removable head has the shape
of a truncated ball, the middle part is the shape of a cylinder, and the distal
shape of the truncated cone, with the large base facing the neck of the endoprosthesis leg.
11. An endoprosthesis according to claim
1-10, characterized in that the proximal part of the removable head has
longitudinal recesses.
Description of the invention
Description in Russian is available at the link: 1994(a)АрхиповСВ (the blog has a translation function).
External links:
Arkhipov S.V. Unipolar endoprosthesis of hip joint designed by S.V. Arkhipova. Application for invention №94038343 (038228) dated October 11, 1994. [in Russian] (Архипов СВ. Однополюсной эндопротез тазобедренного сустава конструкции С.В. Архипова. Заявка на изобретение №94038343 (038228) от 11.10.1994.) [patents.google]
Keywords:
ligamentum capitis femoris, ligamentum teres, ligament of head of femur, endoprosthesis, subtotal, unipolar, hip joint, hip
ENDOPROSTHESES AND IMPLANTS
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