WO2024048495A1 - Implant de renforcement d'acétabulum et kit d'implant de renforcement d'acétabulum - Google Patents

Implant de renforcement d'acétabulum et kit d'implant de renforcement d'acétabulum Download PDF

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Publication number
WO2024048495A1
WO2024048495A1 PCT/JP2023/030883 JP2023030883W WO2024048495A1 WO 2024048495 A1 WO2024048495 A1 WO 2024048495A1 JP 2023030883 W JP2023030883 W JP 2023030883W WO 2024048495 A1 WO2024048495 A1 WO 2024048495A1
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WO
WIPO (PCT)
Prior art keywords
vertical frame
acetabular
pelvis
reinforcement implant
screw insertion
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Application number
PCT/JP2023/030883
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English (en)
Japanese (ja)
Inventor
多文 加畑
琢郎 上野
広幸 高橋
Original Assignee
国立大学法人金沢大学
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Application filed by 国立大学法人金沢大学 filed Critical 国立大学法人金沢大学
Publication of WO2024048495A1 publication Critical patent/WO2024048495A1/fr

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    • 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

Definitions

  • the present invention relates to an acetabular reinforcement implant and an acetabular reinforcement implant kit including the acetabular reinforcement implant.
  • THA total hip arthroplasty
  • a generally hemispherical socket may be attached to the acetabulum
  • an acetabular reinforcement implant may be attached to the pelvis to strengthen and reconstruct the acetabulum.
  • the acetabular reinforcement implant may also be used for revision when the socket attached to the acetabulum in THA ruptures.
  • Non-Patent Document 1 discloses an acetabular reinforcement implant 100 as shown in FIG.
  • the acetabular reinforcement implant 100 includes a dome portion 110, a pallet portion 120, and a hook portion 130.
  • the dome portion 110 includes a vertical frame 111 and a horizontal frame 112 that are curved along a spherical surface corresponding to an acetabulum and intersect with each other.
  • the pallet section 120 is bent upward from the vertical frame 111 of the dome section 110.
  • the pallet portion 120 is flat and screwed to the ilium.
  • the hook portion 130 extends downward from the vertical frame 111 of the dome portion 110. Hook portion 130 is engaged to the obturator foramen.
  • the acetabular reinforcement implant 100 has a symmetrical shape with respect to the center line of the vertical frame 111 of the dome part 110 so that it can be used for both the left foot and the right foot.
  • Non-Patent Document 2 describes an acetabular reinforcing implant that differs from the acetabular reinforcing implant 100 shown in FIG. 8 only in that the horizontal frame 112 is asymmetrical with respect to the center line of the vertical frame 111. Disclosed. Specifically, in this acetabular reinforcement implant, the length of the portion of the horizontal frame 112 located on the left side of the vertical frame 111 (the anterior branch for the left leg and the posterior branch for the right leg) when viewed from the inside of the dome portion 110. The length of the part located on the right side (posterior branch for left foot, anterior branch for right foot) differs between left foot and right foot. That is, in both the acetabular reinforcement implant for the left leg and the acetabular reinforcement implant for the right leg, the anterior branch is set shorter than the posterior branch.
  • the symmetrically shaped acetabular reinforcement implant 100 and the transverse frame 112 as described above the symmetrically shaped acetabular reinforcement implant is not designed to anatomically fit the pelvis. Therefore, they are often difficult to install. In addition, skill and experience are required to attach an acetabular reinforcement implant that is generally symmetrical or symmetrical except for the transverse frame to the pelvis.
  • an object of the present invention is to provide an acetabular reinforcement implant that can be easily attached to the pelvis. It is also an object of the present invention to provide an acetabular reinforcement implant kit including the acetabular reinforcement implant.
  • the present invention is an acetabular reinforcement implant that is attached to a pelvis, and includes a dome portion including a vertical frame and a horizontal frame that curve along a spherical surface corresponding to the acetabulum and intersect with each other, and a dome portion that extends upward from the vertical frame. a flat pallet portion that is bent and screwed to the ilium; and a hook portion that extends downwardly from the longitudinal frame and is engaged with the obturator foramen, the acetabular reinforcement implant being attached to the pelvis.
  • the hook portion is arranged such that the pallet portion is perpendicular to the medial-lateral direction of the pelvis, and a vertical axis obtained by projecting the center line of the vertical frame onto a plane along the pallet portion is parallel to the anterior pelvic plane. is inclined toward the front of the pelvis with respect to the vertical frame, and is twisted toward the front of the pelvis with respect to the vertical frame so as to approach the inside of the pelvis. provide.
  • the present invention also provides the above acetabular reinforcement implant, a resin augment interposed between the pallet portion of the acetabular reinforcement implant and the ilium, and the acetabular reinforcement implant.
  • an acetabular reinforcement implant kit comprising: a hemispherical liner cemented to the dome portion;
  • an acetabular reinforcement implant that can be easily attached to the pelvis, and an acetabular reinforcement implant kit including the acetabular reinforcement implant are provided.
  • FIG. 1 is a perspective view of an acetabular reinforcement implant according to an embodiment of the invention.
  • (a), (b) and (c) are top, front and bottom views of the acetabular reinforcement implant, respectively.
  • (a), (b) and (c) are a right side view, a rear view and a left side view of the acetabular reinforcement implant, respectively.
  • (a) and (b) are front and side views, respectively, of a pelvis with an acetabular reinforcement implant installed.
  • (a) and (b) are a front view and a side view of a pelvis, respectively, for explaining an acetabular reinforcement implant kit. It is a perspective view of an augment.
  • (a) to (c) are diagrams for explaining how to use the acetabular reinforcement implant kit.
  • FIG. 1 is a perspective view of a conventional acetabular reinforcement implant.
  • FIGS. 4(a) and 4(b) show an acetabular reinforcement implant 1 according to an embodiment of the present invention.
  • This acetabular reinforcement implant 1 is attached to a pelvis 9, as shown in FIGS. 4(a) and 4(b), and includes a dome portion 2, a pallet portion 3, and a hook portion 4.
  • the acetabular reinforcement implant 1 is made of titanium alloy.
  • the acetabular reinforcement implant 1 is for the left foot. That is, as shown in FIG. 2(b), in a front view seen from inside the dome portion 2, the left side is the front of the pelvis 9, and the right side is the rear of the pelvis 9.
  • the acetabular reinforcement implant 1 may be for the right leg.
  • the dome portion 2 includes vertical frames 21 that are curved along a spherical surface 10 (see FIGS. 3(a) and (c)) corresponding to the acetabulum 92 (see FIGS. 4(a) and (b)) and intersect with each other. and a horizontal frame 22.
  • the vertical frame 21 extends vertically with a constant width while curving along the spherical surface 10
  • the horizontal frame 22 extends horizontally with a constant width while curving along the spherical surface 10 (i.e., in the width direction of the vertical frame 21). ).
  • the horizontal frame 22 includes an anterior branch 23 located in front of the vertical frame 21 and a posterior branch 24 located in the rear of the vertical frame 21 in the anteroposterior direction of the pelvis 9.
  • the anterior branch 23 is shorter than the posterior branch 24.
  • the length L1 of the anterior branch 23 in the width direction of the vertical frame 21 is 30% or more and less than 50% of the diameter of the spherical surface 10
  • the length L1 of the anterior branch 23 in the width direction of the vertical frame 21 is 40% or more and 50% or less of the diameter of the spherical surface 10.
  • the anterior branch may protrude from the acetabulum and adversely affect the iliopsoas tendon located anteriorly.
  • the anterior branch 23 is shorter than the posterior branch 24 as in this embodiment, it is possible to prevent the anterior branch 23 from protruding from the acetabulum 92.
  • the lengths of the anterior branch 23 and the posterior branch 24 are set as described above, protrusion of the anterior branch 23 from the acetabulum 92 can be prevented as much as possible.
  • the anterior branch 23 may have the same length as the posterior branch 24.
  • the dome part 2 has a small anterior branch 25 that extends from the vertical frame 21 above the anterior branch 23 and extends laterally while curving along the spherical surface 10 , and a small anterior branch 25 that extends from the vertical frame 21 along the spherical surface 10 above the posterior branch 24 . It includes a minor posterior ramus 26 that extends laterally while being curved.
  • the lesser anterior branch 25 and the lesser posterior branch 26 have comparable lengths.
  • the pallet part 3 is bent upward from the vertical frame 21 of the dome part 2.
  • the pallet part 3 is flat and screwed to the ilium 91 (see FIGS. 4(a) and 4(b)).
  • the pallet part 3 is provided with a plurality of screw insertion holes 31 through which screws to be screwed into the ilium 91 are inserted.
  • the pallet portion 3 extends from the vertical frame 21 toward the front of the pelvis 9. In other words, the center of the pallet portion 3 is located further forward of the pelvis 9 than the center line 21a of the vertical frame 21. More specifically, the pallet portion 3 has a substantially boomerang-like shape that points upward, and one end thereof is connected to the vertical frame 21 .
  • the pallet part 3 does not necessarily need to extend from the vertical frame 21 toward the front of the pelvis 9, and the center of the pallet part 3 may be located on an extension of the center line 21a of the vertical frame 21.
  • the screw insertion hole 31 includes a first screw insertion hole 31A, a second screw insertion hole 31B, a third screw insertion hole 31C, and a fourth screw insertion hole 31D.
  • the number of screw insertion holes 31 may be two or three, or five or more.
  • the first screw insertion hole 31A is located above the vertical frame 21, the second screw insertion hole 31B is located in front of and above the first screw insertion hole 31A, and the third screw insertion hole 31C is located in the second It is located in front of and below the screw insertion hole 31B, and the fourth screw insertion hole 31D is located in front of and below the third screw insertion hole 31C.
  • the pallet portion 3 is provided with at least one wire insertion hole 32 through which a temporary fixing wire is inserted.
  • the number of wire insertion holes 32 is three.
  • the diameter of each wire insertion hole 32 is smaller than the diameter of the screw insertion hole 31.
  • One wire insertion hole 32 is located below the second screw insertion hole 31B and between the first screw insertion hole 31A and the third screw insertion hole 31C.
  • the remaining two wire insertion holes 32 are arranged along the contour of the pallet portion 3 above the third screw insertion hole 31C.
  • the hook portion 4 extends downward from the vertical frame 21 of the dome portion 2.
  • the hook portion 4 is engaged with the obturator hole 93 (see FIGS. 4(a) and 4(b)).
  • the hook portion 4 is formed by folding back a plate-like portion continuous with the vertical frame 21 in a direction opposite to the vertical frame 21 .
  • the hook portion 4 is inclined toward the front of the pelvis 9 with respect to the vertical frame 21 of the dome portion 2. Further, the hook portion 4 is twisted relative to the vertical frame 21 so as to move toward the front of the pelvis 9 and approach the inside of the pelvis 9.
  • the inclination and twist of the hook portion 4 are such that when the acetabular reinforcement implant 1 is attached to the pelvis 9, the pallet portion 3
  • the vertical axis 1A which is the projection of the center line 21a of the vertical frame 21 onto a plane that is perpendicular to the medial-lateral direction of the pallet part 3 and parallel to the anterior pelvic plane (APP), is set so that it is parallel to the anterior pelvic plane (APP).
  • APP is a plane that includes both anterior superior iliac spines and the pubic tubercle.
  • the vertical axis 1A of the acetabular reinforcement implant 1 is parallel to the Y-axis
  • the horizontal axis 1B of the acetabular reinforcement implant 1 is parallel to the Z-axis.
  • the inclination angle of the hook part 4 with respect to the vertical frame 21, that is, the angle ⁇ 1 between the center line 21a of the vertical frame 21 and the center line 4a of the hook part 4 (see FIG. 2(b)) is 10 degrees or more and 30 degrees or less. It is.
  • the twist angle of the hook part 4 with respect to the vertical frame 21, that is, the angle ⁇ 2 between the width direction of the vertical frame 21 and the width direction of the hook part 4 (see FIG. 2(a)) is 5 degrees or more and 15 degrees or less. be.
  • the acetabular reinforcement implant 1 since the acetabular reinforcement implant 1 has a shape anatomically compatible with the pelvis 9, the acetabular reinforcement implant 1 can be easily attached to the pelvis 9.
  • the angle of inclination of the hook portion 4 with respect to the vertical frame 21 is preferably 10 degrees or more and 30 degrees or less.
  • the hook portion 4 is twisted relative to the vertical frame 21 toward the front of the pelvis 9 and approaches the inside of the pelvis 9, and the twist angle of the hook portion 4 relative to the vertical frame 21 is 5. It is desirable that the angle is greater than or equal to 15 degrees.
  • the vertical axis 1A of the acetabular reinforcing implant 1 is parallel to the vertical direction along APP, so that the acetabular reinforcing implant 1 itself is aligned with the anatomy of the pelvis 9. It can be used as a guide for objective indicators. That is, if the acetabular reinforcement implant 1 is installed so that the vertical axis 1A of the acetabular reinforcement implant 1 is parallel to the vertical direction along the APP, it will be fixed to the dome part 2 of the acetabular reinforcement implant 1. It becomes possible to install the hemispherical liner 8 (see FIG. 7(c)) at the installation angle as planned before surgery. This makes it possible to ideally reconstruct the hip joint and achieve a wide range of joint motion. As a result, the effect of reducing the occurrence of complications such as dislocation and loosening of the acetabular reinforcing implant 1 is expected.
  • the pallet part 3 extends from the vertical frame 21 toward the front of the pelvis 9, a wide support area of the pallet part 3 by the ilium 91 can be secured.
  • the implant attachment angle when the acetabular reinforcement implant is attached to the pelvis is determined when the acetabular reinforcement implant 1 is used and when the conventional acetabular reinforcement implant 100 shown in FIG. 8 is used.
  • We verified how much deviation occurs from the target angle in (the flexion/extension angle of the implant with respect to APP, the adduction/abduction angle of the pallet part with respect to the plane perpendicular to APP, and the anteversion/reversion angle). .
  • Attachment of 1,100 acetabular reinforcement implants to the acetabular model was carried out by five examiners with different experience (an orthopedic surgeon with 28 years of experience, an orthopedic surgeon with 12 years of experience, an orthopedic surgeon with 7 years of experience, and an orthopedic surgeon with 5 years of experience).
  • the eye surgery was performed by an eye plastic surgeon and medical student.
  • the attachment of 1,100 acetabular reinforcement implants to the acetabular model by each examiner was performed three times at intervals of one week or more, and the implant attachment angle was measured each time.
  • the acetabular reinforcement implant 1 of this embodiment is statistically better than the conventional acetabular reinforcement implant 100 in terms of adduction/abduction angles, anteversion/retroversion angles, and flexion/extension angles of the implant.
  • the accuracy was significantly high (Mann-Whitney U test).
  • the average values of the absolute value errors with respect to the target installation angle for the acetabular reinforcement implant 1 of this embodiment and the conventional acetabular reinforcement implant 100 are 0.8 ⁇ 0.7 degrees and 3.1 ⁇ 1.7 degrees for adduction and abduction angles, respectively.
  • the anteversion and retroversion angles were 5.3 ⁇ 2.4 degrees and 11.1 ⁇ 4.0 degrees, respectively, and the flexion and extension angles were 1.5 ⁇ 1.1 degrees and 3.1 ⁇ 2.6 degrees, respectively.
  • the acetabular reinforcement implant 1 of this embodiment had a smaller mean square value of the examiner factor representing inter-examiner error than the conventional acetabular reinforcement implant 100.
  • the average square of the installation angles of the acetabular reinforcement implant 1 of this embodiment and the conventional acetabular reinforcement implant 100 are 0.82 and 3.17 for adduction and abduction angles, respectively, and 0.19 and 8.51 for anteversion and retroversion angles, respectively.
  • the flexion and extension angles were 33.1 and 142.0, respectively. That is, it was also found that the acetabular reinforcing implant 1 of this embodiment has a small error in the installation angle regardless of the amount of experience of the operator and no matter who installs it.
  • the acetabular reinforcement implant kit 5 includes, in addition to the acetabular reinforcement implant 1, an augment 6 interposed between the pallet portion 3 of the acetabular reinforcement implant 1 and the ilium 91, and the acetabular reinforcement implant 1. It includes a hemispherical liner 8 which is cemented to the dome part 2 of the device and an installation guide 7 for the liner 8.
  • the augment 6 is made of, for example, resin such as polyethylene or artificial bone such as hydroxyapatite. As shown by the two-dot chain line in FIGS. 6 and 5(a), the augment 6 is originally a columnar member extending with a constant cross-sectional shape similar to the pallet part 3, and is adjusted to an appropriate thickness during surgery. disconnected. The distance from the pallet part 3 of the acetabular reinforcement implant 1 to the ilium 91 can be measured using a 3D template before surgery.
  • the vertical axis 1A of the acetabular reinforcement implant 1 is aligned along the APP.
  • the acetabular reinforcement implant 1 can be installed parallel to the vertical direction.
  • the cut augment 6 is attached to the pallet part 3 of the acetabular reinforcement implant 1 from the back side.
  • the augment 6 is provided with a plurality of openings 61 at positions corresponding to the screw insertion holes 31 of the pallet part 3, through which screws to be screwed into the ilium 91 are inserted.
  • Each opening 61 may be a through hole or a notch.
  • the liner 8 is made of resin such as polyethylene. Inserted into the liner 8 is a femoral head that is attached to a stem that is implanted in the femur.
  • the liner 8 has a ring-shaped end surface forming a circular opening.
  • the installation guide 7 is for determining the installation angle of the liner 8.
  • the installation guide 7 can be attached to the pallet part 3 of the acetabular reinforcement implant 1 from the front side.
  • the installation guide 7 includes a base 71 having a shape similar to the pallet part 3, a circular arc part 73 along the periphery of the end surface of the liner 8, and an arm part 72 that connects the base 71 and the circular arc part 73.
  • the arc portion 73 is curved along the installation reference plane, and the outward opening angle, which is the angle of the installation reference plane with respect to the X axis of APP, is, for example, 32 to 40 degrees, and the angle of the installation reference plane with respect to the Z axis of APP.
  • the forward opening angle is, for example, 4.7 to 25.4 degrees.
  • installation guides 7 with different outward opening angles and different front opening angles be prepared.
  • an appropriate installation guide 7 can be used depending on the hip joint angle of each individual patient.
  • the installation guide 7 is attached to the pallet part 3 of the acetabular reinforcement implant 1.
  • cement is applied to the inner surface of the dome part 2, and the liner 8 is inserted into the dome part 2 as shown in FIG. 7(b).
  • the periphery of the end face of the liner 8 is aligned with the arcuate portion 73 of the installation guide 7.
  • the liner 8 can be installed at the installation angle according to the preoperative plan, or in other words, the preoperative plan can be accurately reproduced.
  • the installation guide 7 is removed, as shown in FIG. 7(c).
  • the present invention provides an acetabular reinforcement implant attached to a pelvis, the dome portion comprising a longitudinal frame and a transverse frame that are curved along a spherical surface corresponding to the acetabulum and intersect with each other;
  • the acetabular reinforcement implant includes a flat pallet portion bent upward from the vertical frame and screwed to the ilium, and a hook portion extending downward from the vertical frame and engaged with the obturator foramen.
  • the pallet part When attached to the pelvis, the pallet part is perpendicular to the medial and lateral direction of the pelvis, and a vertical axis obtained by projecting the center line of the vertical frame onto a plane along the pallet part is parallel to the anterior pelvic plane.
  • the hook portion is inclined toward the front of the pelvis with respect to the vertical frame, and is twisted relative to the vertical frame so as to approach the inside of the pelvis toward the front of the pelvis.
  • the acetabular reinforcement implant since the acetabular reinforcement implant has a shape that anatomically fits the pelvis, the acetabular reinforcement implant can be easily attached to the pelvis. Moreover, since the longitudinal axis of the acetabular reinforcement implant is parallel to the vertical direction along the APP, the acetabular reinforcement implant itself can be used as a guide for the anatomical index of the pelvis. In other words, if the acetabular reinforcement implant is installed so that the vertical axis of the acetabular reinforcement implant is parallel to the vertical direction along the APP, the hemispherical liner fixed to the dome of the acetabular reinforcement implant can be It becomes possible to install the device at the installation angle as planned before surgery. This makes it possible to ideally reconstruct the hip joint and achieve a wide range of joint motion. As a result, it is expected to be effective in reducing the occurrence of complications such as dislocation and loosening of the acetabular reinforcement implant.
  • the pallet portion may extend from the vertical frame toward the front of the pelvis. According to this configuration, a wide support area of the pallet part by the iliac bones can be ensured.
  • the pallet part is provided with a plurality of screw insertion holes, and the plurality of screw insertion holes are first screw insertion holes located above the vertical frame. a second screw insertion hole located in front of and above the first screw insertion hole; a third screw insertion hole located in front of and below the second screw insertion hole; and a third screw insertion hole located in front of the third screw insertion hole. It may also include a fourth screw insertion hole located below. According to this configuration, by inserting the screw into the third screw insertion hole or the fourth screw insertion hole, the acetabular reinforcement implant can be firmly fixed using the thick parent bone near the anterior inferior iliac spine. Can be done.
  • the pallet portion includes a plurality of screw insertion holes and at least one wire insertion hole having a smaller diameter than the plurality of screw insertion holes. may be provided. According to this configuration, the acetabular reinforcement implant can be temporarily fixed by passing the wire through the wire insertion hole. Thereby, the acetabular reinforcement implant can be easily fixed.
  • an inclination angle of the hook portion with respect to the vertical frame is 10 degrees or more and 30 degrees or less, and the torsion of the hook portion with respect to the vertical frame is The angle may be greater than or equal to 5 degrees and less than or equal to 15 degrees.
  • the horizontal frame includes an anterior branch located in front of the vertical frame and a rear branch located in the rear of the vertical frame in the anteroposterior direction of the pelvis. It has branches, and the anterior branch may be shorter than the posterior branch. In conventional acetabular reinforcement implants with a symmetrical shape, the anterior branch sometimes protrudes from the acetabulum. On the other hand, if the anterior branch is shorter than the posterior branch, it is possible to suppress the anterior branch from protruding from the acetabulum.
  • the length of the anterior branch in the width direction of the vertical frame is 30% or more and less than 50% of the diameter of the spherical surface, and
  • the length of the branch may be 40% or more and 50% or less of the diameter of the spherical surface. According to this configuration, protrusion of the anterior branch from the acetabulum can be prevented as much as possible.
  • the present invention provides the acetabular reinforcement implant according to any one of the first to seventh aspects, and a resin-made and a hemispherical liner cemented to the dome portion of the acetabular reinforcement implant.
  • a resin-made and a hemispherical liner cemented to the dome portion of the acetabular reinforcement implant According to this configuration, by adjusting the thickness of the augment according to the gap between the pallet part of the acetabular reinforcement implant and the ilium, the vertical axis of the acetabular reinforcement implant can be aligned with the vertical direction along the APP. Acetabular reinforcement implants can be placed in parallel.
  • the acetabular reinforcement implant kit includes an installation guide for determining an installation angle of the liner that can be attached to the pallet portion of the acetabular reinforcement implant. Further provision may be made. According to this configuration, the liner can be installed at an installation angle according to the preoperative plan, or in other words, the preoperative plan can be accurately reproduced.
  • Acetabular reinforcement implant 10 Spherical surface 2 Dome part 21 Vertical frame 22 Horizontal frame 23 Anterior branch 24 Posterior branch 3 Pallet part 31, 31A to 31D Screw insertion hole 32 Wire insertion hole 4 Hook part 5 Acetabular reinforcement implant kit 6 Augu ment 7 Installation guide 8 Liner 9 Pelvis 91 Ilium 92 Acetaburu 93 Obturator foramen

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  • 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

Un implant de renforcement d'acétabulum (1) selon un mode de réalisation comprend : une section de dôme (2) qui comprend un cadre vertical et un cadre horizontal qui se croisent et se courbe le long d'une surface sphérique qui correspond à l'acétabulum (92) ; une section de palette plate (3) qui est vissée à l'ilium (91) et est pliée vers le haut à partir du cadre vertical ; et une section de crochet (4) qui vient en prise avec le foramen d'obturateur et s'étend vers le bas à partir du cadre vertical. Lorsque l'implant de renforcement d'acétabulum (1) est fixé au bassin (9), la section de crochet (4) est inclinée par rapport au cadre vertical vers l'avant du bassin (9) et se tord de plus en plus vers l'avant du bassin (9) par rapport au cadre vertical dans la direction médiale du bassin (9), d'une manière telle que la section de palette (3) coupe la direction médio-latérale du bassin (9) et un axe vertical (1A), qui est une projection de la ligne centrale (21a) du cadre vertical (21) sur un plan s'étendant le long de la section de palette (3), est parallèle au plan pelvien.
PCT/JP2023/030883 2022-08-29 2023-08-28 Implant de renforcement d'acétabulum et kit d'implant de renforcement d'acétabulum WO2024048495A1 (fr)

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JP2022-135610 2022-08-29
JP2022135610A JP2024032130A (ja) 2022-08-29 2022-08-29 寛骨臼補強インプラントおよび寛骨臼補強インプラントキット

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2827504A1 (fr) * 2001-07-19 2003-01-24 Olivier Boudot Dispositif de reconstruction de la cavite cotyloidienne de l'articulation de la hanche
FR2854057A1 (fr) * 2003-04-23 2004-10-29 Rech S Et De Fabrication S E R Armature pour implant cotyloidien de prothese de hanche
CN101836906A (zh) * 2010-03-09 2010-09-22 上海晟实医疗器械科技有限公司 一种用于全髋关节翻修术的髋臼重建支架
CN103705317A (zh) * 2013-12-27 2014-04-09 北京爱康宜诚医疗器材股份有限公司 组配式髋臼假体

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2827504A1 (fr) * 2001-07-19 2003-01-24 Olivier Boudot Dispositif de reconstruction de la cavite cotyloidienne de l'articulation de la hanche
FR2854057A1 (fr) * 2003-04-23 2004-10-29 Rech S Et De Fabrication S E R Armature pour implant cotyloidien de prothese de hanche
CN101836906A (zh) * 2010-03-09 2010-09-22 上海晟实医疗器械科技有限公司 一种用于全髋关节翻修术的髋臼重建支架
CN103705317A (zh) * 2013-12-27 2014-04-09 北京爱康宜诚医疗器材股份有限公司 组配式髋臼假体

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