CN217660299U - Hip joint revision prosthesis - Google Patents
Hip joint revision prosthesis Download PDFInfo
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- CN217660299U CN217660299U CN202123038343.1U CN202123038343U CN217660299U CN 217660299 U CN217660299 U CN 217660299U CN 202123038343 U CN202123038343 U CN 202123038343U CN 217660299 U CN217660299 U CN 217660299U
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Abstract
The utility model relates to a medical false block, in particular to a hip joint revision prosthesis. The hip revision prosthesis comprises an acetabular cup, wherein the acetabular cup is hemispherical, the acetabular cup is provided with first through holes, and the distance between any two adjacent first through holes is equal. The parts of the hip joint revision prosthesis, which are contacted with the hip joint, of the utility model are all designed or printed with porous structures, thereby achieving the bone growth of the prosthesis-bone interface and realizing the long-term stability of the prosthesis.
Description
Technical Field
The utility model relates to a medical false block, in particular to a hip joint revision prosthesis.
Background
Total hip joint replacement surgery is one of the most successful surgeries in the field of orthopedic treatment since the 20 th century. However, after the first total hip replacement operation, the operation needs to be rebuilt again or many times because of the failure of infection, osteolysis, loosening and the like.
The revision hip surgery is more complicated than the initial hip prosthesis replacement. Firstly, particles generated by long-term abrasion of the artificial hip joint can cause the dissolution of the bone around the artificial block, thereby forming the bone defect around the artificial block with a large range and a complex structure; secondly, for the hip joint prosthesis with failed bone cement type, the bone cement is difficult to take, and irregular bone defects are easy to form; thirdly, infection around the artificial hip joint often causes infectious bone resorption and bone defect with complex shapes.
The conventional revision of a hip joint prosthesis can be solved by standardized acetabulum prostheses, reinforcing rings, self-block or homogeneous heterogeneous bone transplantation, bone cement filling and the like, but the conventional revision of a hip joint prosthesis cannot be solved or has poor curative effect on revision of a hip joint with large-range complex bone defects. The reason is as follows: 1. the complex and huge bone defects are filled by simply adopting bone cement, the necrosis and absorption of peripheral bones can be caused by the heat production of the bone cement, and a bone-bone cement interface exists between the bone cement and the peripheral bones, so the long-term curative effect is not ideal; 2. the pressing bone grafting is also commonly applied to the structural filling of complex bone defects, but the bone grafting needs to be absorbed and reconstructed, so that the early mechanical strength is poor, and the displacement of a dummy block is generated due to the change of the mechanical strength in the process of absorption and reconstruction; 3. the mechanical strength of the structural bone graft is better than that of the granular bone graft in the early stage, but in the processes of gradual bone absorption and creeping substitution, the mechanical strength is gradually reduced, and the displacement, the looseness and the like of a dummy block can be caused; 4. the reinforcing ring can strengthen the firmness of hip joint particles, bone blocks or other structures, so that the fixing stability of the main acetabular cup block component is partially increased, but the biomechanical requirements of hip joint movement can not be completely met, and the reinforcing ring structure is also a standard part and cannot be completely matched with the hip joint of a patient.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a hip revision prosthesis for solving the technical problems existing in the prior art.
To achieve the above objects and other related objects, the present invention provides a solution including the following features.
The utility model provides a hip joint revision prosthesis, including the acetabular cup, the acetabular cup is hemispherical, the acetabular cup has first through-hole, arbitrary adjacent two distance between the first through-hole equals.
According to the technical scheme of the application, the distance between the centers of two adjacent first through holes is 7-17 mm. Preferably, the distance between the centers of two adjacent first through holes is 12mm.
According to the technical scheme of the application, the inner diameter of the acetabular cup is 45-55 mm, and the outer diameter of the acetabular cup is 52-62 mm. Preferably, the inner diameter of the acetabular cup is 49mm, and the outer diameter of the acetabular cup is 57mm.
According to the technical scheme of the application, the aperture of the first through hole is 5-8 mm. Preferably, the aperture of the first through hole is 7-7.3 mm. Specifically, the first through hole is circular.
According to the technical scheme of the application, the number of the first through holes is 16-31. Preferably, the number of the first through holes is 18 to 21. Specifically, the number of the first through holes is 19.
According to the technical scheme of the application, the acetabulum acetabular bone further comprises a universal filling block and a plurality of first connecting pieces, wherein the universal filling block is hemispherical and is used for supplementing and forming the acetabulum fossa and bone defects around the acetabulum fossa; the universal filling block is provided with a plurality of second through holes; the universal spacer includes a first mating face;
in use, the first connector is adapted to extend through the first and second through-holes to connect the acetabular cup and the universal filler block such that the first mating surface matingly fits with an outer surface of the acetabular cup.
Preferably, the universal filling block has a diameter of 35 to 45mm.
Preferably, the number of the second through holes is 2.
According to the technical scheme of the application, the acetabulum acetabular bone filling device further comprises an acetabulum filling block and a plurality of second connecting pieces, wherein the acetabulum filling block is not more than one fourth of a sphere and is used for supplementing and forming an acetabulum socket and bone defects around the acetabulum socket; the acetabulum filling block is provided with a plurality of third through holes;
the acetabular filler block includes a second mating surface;
in use, the second connector is adapted to extend through the first and third through-holes to connect the acetabular cup and the acetabular filler block such that the second mating surface matingly fits with the outer surface of the acetabular cup.
Preferably, the acetabulum filling block further comprises a fixing surface, wherein the fixing surface is provided with a fixing hole, and the fixing hole fixes the acetabulum filling block and the hip joint through a fixing part.
According to the technical scheme of the application, the device further comprises an ilium filling block and a plurality of third connecting pieces, wherein a fourth through hole is formed in the ilium filling block;
the ilium filling block is used for supplementing an ilium defect and comprises a third matching surface;
in use, the third connector is used to penetrate the first through hole and the fourth through hole to connect the acetabular cup and the iliac filling block so that the third mating surface is matched with the outer surface of the acetabular cup in a matching manner.
Preferably, the iliac filling block tapers in cross-section in a direction away from the acetabular cup.
More preferably, a plurality of second fixing holes are arranged on the ilium filling block with the gradually reduced cross section, and the second fixing holes fix the ilium filling block with the ilium of the hip joint through second fixing pieces.
According to the technical scheme, the sitting bone connecting piece comprises a sitting bone filling block and a plurality of fourth connecting pieces, wherein a fifth through hole is formed in the sitting bone filling block;
the ischial filling block is in a round table shape and is used for supplementing ischial defects, and the ischial filling block comprises a fourth matching surface;
in use, a fourth connector is used to extend through the first and fifth through holes to connect the acetabular cup and the ischial filler block such that the fourth mating surface mates with the outer surface of the acetabular cup.
Preferably, the area of the cross section of the fourth matching surface is 3-8 cm 2 。
Preferably, the height of the truncated cone-shaped ischium filling block is 0.5-1.2 cm.
Preferably, the ischial filling block tapers in cross-section in a direction away from the acetabular cup.
More preferably, the area of the cross-section of the progressively decreasing ischial filling blocks does not exceed 4cm 2 。
According to the technical scheme, the device further comprises a pubis filling block and a plurality of fifth connecting pieces, wherein a sixth through hole is formed in the ischium filling block;
the pubis filling block is in a round table shape and used for supplementing a pubis defect, and the pubis filling block comprises a fifth matching surface;
in use, a fifth connector is adapted to extend through the first and sixth through holes to connect the acetabular cup and the pubic filler block such that the fifth mating surface matingly fits with the outer surface of the acetabular cup.
Preferably, the area of the cross section of the fifth matching surface is 7-14 cm 2 。
Preferably, the height of the cone-shaped pubis filling block is 1.0-2.0 cm.
Preferably, the pubic filling block tapers in cross-section in a direction away from the acetabular cup.
More preferably, the area of the cross-section of the tapered pubic infill is no more than 3cm 2 。
According to the technical scheme of the application, the first connecting piece, the second connecting piece, the third connecting piece, the fourth connecting piece and the fifth connecting piece are spongy nails and/or locking nails.
According to the technical scheme of the application, the first fastener and the second fastener are spongy nails and/or locking nails.
Compared with the prior art, the utility model discloses following beneficial effect has:
1) The hip joint revision prosthesis of the utility model can be flexibly selected and assembled to achieve the adaptation with the complex bone defect shape of the patient.
2) The utility model discloses a hip joint revision prosthesis can finely tune the position in nail hole according to the remaining hip joint's of patient's pelvis quality, from ensureing initial stability.
4) The utility model discloses a hip joint revision prosthesis can be nimble and meticulous selection, adjustment false body structure, reaches the remaining hip joint of best matching patient, need not to plant bone or a small amount of bone grafting, has stopped bone cement fundamentally and has filled the hip joint defect.
5) The hip revision prosthesis of the utility model can fully match the residual hip joint of the patient, and ensures to obtain immediate stability by combining the design of unique spongy nails and/or locking nails.
6) The parts of the hip joint revision prosthesis in contact with the hip joint are all designed or printed with porous structures, thereby achieving the bone growth of the prosthesis-bone interface and realizing the long-term stability of the prosthesis.
Drawings
Fig. 1 is a schematic structural view of the acetabular cup of the invention.
Fig. 2 shows a second structural schematic view of the acetabular cup of the invention.
Fig. 3 is a third schematic structural view of the acetabular cup of the invention.
Fig. 4 is a schematic structural diagram of the universal filling block of the present invention.
Fig. 5 is a second schematic structural diagram of the universal filling block of the present invention.
Fig. 6 is a schematic view showing the effect of the acetabular cup and the universal filling block of the invention in use.
Fig. 7 is a schematic view showing the effect of the acetabular cup and the universal filling block of the invention when in use.
Fig. 8 shows a schematic structural view of the acetabular filling block of the present invention.
Fig. 9 shows a second schematic structural view of the acetabular filler block of the invention.
Fig. 10 is a schematic view showing the effect of the acetabular cup and the acetabular filling block of the invention in use.
Fig. 11 shows a second effect schematic diagram of the acetabular cup and the acetabular filler block of the invention in use.
Fig. 12 is a schematic structural view of the iliac filling block of the present invention.
Fig. 13 is a second schematic structural view of the iliac filling block of the present invention.
Fig. 14 is a schematic view showing the effect of the acetabular cup and the iliac filling block of the present invention in use.
Fig. 15 is a second schematic view showing the effect of the acetabular cup and the iliac filling block of the present invention in use.
Fig. 16 is a schematic structural view of the ischial filling block of the present invention.
Fig. 17 is a second schematic view of the ischial filling block of the present invention.
Figure 18 shows one of the effects of the acetabular cup and ischial filling block of the present invention in use.
Fig. 19 shows a second effect of the acetabular cup and the ischial filling block of the present invention in use.
Fig. 20 shows a schematic view of the pubic bone filling block of the present invention.
Fig. 21 shows the effect of the acetabular cup of the invention in use in a hip joint.
Fig. 22 shows an effect diagram of the acetabular cup and the universal filling block of the invention used in cooperation with a hip joint.
Fig. 23 shows the effect of the acetabular cup and the acetabular filling block of the invention in cooperation with a hip joint.
Fig. 24 shows the effect of the acetabular cup and the iliac filling block of the invention in cooperation with a hip joint.
The drawings in fig. 1 to 24 are explained as follows
1. Tailbone
2. Sacrum
3. Ilium bone
4. Pubis bone
5. Ischia
100. Acetabular cup
101. Through hole
200. Universal filling block
201. Second via 201
202. First mating face
300. Acetabulum filling block
301. Third through hole
302. Second mating face
303. Fixing surface
304. Fixing hole
400. Ilium filling block
401. Fourth through hole
402. Third mating surface
403. Second fixing hole
500. Ischial filling block
501. The fifth through hole
502. Fourth mating surface
600. Pubic bone filling block
601. The sixth through hole
602. The fifth mating surface
Detailed Description
The embodiments of the present invention are described below with reference to specific examples, and other advantages and effects of the present invention will be apparent to those skilled in the art from the disclosure in the specification.
Please refer to fig. 1 to 24. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Fig. 1 to 3 show one to three schematic structural views of the acetabular cup. The utility model provides a hip joint revision prosthesis, including acetabular cup 100, acetabular cup 100 is hemispherical, acetabular cup 100 has first through-hole 101, arbitrary adjacent two distance between the first through-hole 101 equals.
In a specific embodiment, the distance between the centers of two adjacent first through holes 101 is 7 to 17mm. Preferably, the distance between the centers of two adjacent first through holes 101 is 12mm.
In one specific embodiment, the acetabular cup 100 has an inner diameter of 45 to 55mm and the acetabular cup 100 has an outer diameter of 52 to 62mm. Preferably, the inner diameter of the acetabular cup 100 is 49mm, and the outer diameter of the acetabular cup 100 is 57mm.
In a specific embodiment, the first through hole 101 has a hole diameter of 5 to 8mm. Preferably, the aperture of the first through hole 101 is 7 to 7.3mm. Specifically, the first through hole 101 is circular.
In a specific embodiment, the number of the first through holes 101 is 16 to 31. Preferably, the number of the first through holes 101 is 18 to 21. Specifically, the number of the first through holes 101 is 19. First through-hole 101 number can be adjusted according to actual need in this application to in a flexible way adjustment position, cooperation angle between each filling block and the acetabular cup, ensure to the utmost that there can be suitable hole site between each filling block and the acetabular cup, in order to utilize the integration to connect.
Fig. 4 to 5 show one and two schematic structural diagrams of a universal filling block. The hip revision prosthesis of the utility model also comprises a universal filling block 200 and a plurality of first connecting pieces, wherein the universal filling block 200 is hemispherical and is used for supplementing and forming an acetabular fossa and bone defects around the acetabular fossa; a plurality of second through holes 201 are formed in the universal filling block 200; the universal filler block 200 includes a first mating surface 202, and the first mating surface 202 mates snugly with the outer surface of the acetabular cup 100.
In a specific embodiment, the universal spacer 200 has a diameter of 35 to 45mm.
In a specific embodiment, the number of the second through holes 201 is 2; the 2 second through holes 201 are oppositely arranged.
Fig. 6-7 show one and two schematic views of the effects of the acetabular cup and the universal filler block in use. In use, the first connector is employed to extend through the first and second through- holes 101, 201 to connect the acetabular cup 100 and the universal filler block 200 such that the first mating surface 202 mates with an outer surface of the acetabular cup 100.
Fig. 8 to 9 show one and two schematic structural views of the acetabular filling block. The hip revision prosthesis of the utility model also comprises an acetabulum filling block 300 and a plurality of second connecting pieces, wherein the acetabulum filling block 300 is a sphere which is not more than one fourth and is used for supplementing and forming an acetabulum socket and bone defects around the acetabulum socket; the acetabulum filling block 300 is provided with a plurality of third through holes 301; the acetabular filler block 300 includes a second mating surface 302, and the second mating surface 302 matingly fits with the outer surface of the acetabular cup 100.
In one embodiment, the acetabular filler block 300 further includes a fixation surface 303, the fixation surface 303 defines a plurality of first fixation holes 304, and a first fixation member is adapted to extend through the fixation holes 304 to secure the acetabular filler block 300 to the acetabular socket and surrounding bone tissue in use.
Fig. 10-11 show one and two schematic views of the effects of the acetabular cup and the acetabular filler block in use. In use, the second connector is used to extend through the first and third through holes 101, 301 to connect the acetabular cup 100 and the acetabular filler block 300 such that the second mating surface 302 mates snugly with the outer surface of the acetabular cup 100.
Fig. 12-13 show one and two schematic structural views of the iliac filling block. The hip joint revision prosthesis of the utility model also comprises an ilium filling block 400 and a plurality of third connecting pieces, wherein the ilium filling block 400 is used for supplementing the ilium defect; a fourth through hole 401 is formed in the ilium filling block 400; the iliac filling block 400 includes a third mating surface 402, the third mating surface 402 matingly engaging the outer surface of the acetabular cup 100. The shape of the iliac filling block 400 can meet iliac loss in different defect directions and is not limited to the structure given in the application.
In a particular embodiment, the iliac filling block 400 tapers in cross-section in a direction away from the acetabular cup 100.
In a more specific embodiment, a plurality of second fixing holes 403 are arranged on the ilium filling block 400 with the gradually reduced cross section, and the second fixing holes 403 fix the ilium filling block 400 with the ilium of the hip joint through second fixing pieces. The number of the second fixing holes 403 is at least 1, preferably 2, 3 or 4.
Fig. 14-15 show one and two schematic views of the effects of the acetabular cup and the iliac filling block in use. In use, the third connector is used to extend through the first through hole 101 and the fourth through hole 401 to connect the acetabular cup 100 and the iliac filling block 400 such that the third mating surface 402 mates with the outer surface of the acetabular cup 100.
As shown in fig. 16 to 17, it is one to two of the schematic structural diagrams of the ischial filling blocks. The hip joint revision prosthesis of the utility model also comprises an ischium filling block 500 and a plurality of fourth connecting pieces, wherein the ischium filling block 500 is in a round table shape and is used for supplementing ischium defects; the ischial filling block 500 is provided with a fifth through hole 501, the ischial filling block 500 comprises a fourth matching surface 502, and the fourth matching surface 502 is matched with the outer surface of the acetabular cup 100 in a matching manner.
In a specific embodiment, the cross-sectional area of the fourth mating surface 502 is 3 to 8cm 2 。
In a specific embodiment, the ischial filling blocks 500 have a height of 0.5 to 1.2cm.
In a particular embodiment, the ischial filling blocks 500 taper in cross-section in a direction away from the acetabular cup 100.
In a more specific embodiment, the area of the cross-section of the tapered ischial filling blocks 500 is no more than 4cm 2 . Preferably 2 to 4cm 2 。
Fig. 18-19 show one and two schematic views of the effects of the acetabular cup and the ischial filling block in use. In use, a fourth connecting member is used to penetrate through the first through hole 101 and the fifth through hole 501 to connect the acetabular cup 100 and the ischial filling block 500, so that the fourth mating surface 502 matches with the outer surface of the acetabular cup 100, and meanwhile, the fourth connecting member can be fixed to the ischial bones, thereby realizing through-type integrated fixation.
Fig. 20 is a schematic view of the structure of the pubic filling block. The hip joint revision prosthesis of the utility model also comprises a pubis filling block 600 and a plurality of fifth connecting pieces, wherein the pubis filling block 600 is in a round platform shape and is used for supplementing the pubis defect; a sixth through hole 601 is formed in the pubis filling block 600, and the pubis filling block 600 comprises a fifth matching surface 602; in use, a fifth connector is used to extend through the first and sixth through holes 601 to connect the acetabular cup 100 to the pubic filler block 600 such that the fifth mating surface 602 mates with the outer surface of the acetabular cup 100.
In a specific embodiment, the area of the cross section of the fifth mating surface 602 is 7-14 cm 2 。
In a specific embodiment, the pubic filling block 600 has a height of 1.0-2.0 cm.
In a particular embodiment, the pubic filler block 600 tapers in cross-section in a direction away from the acetabular cup 100.
In a specific embodiment, the area of the cross-section of the tapered pubic filling block 600 is no more than 7cm 2 . Preferably 3 to 7cm 2 。
In a specific embodiment, the first connector, the second connector, the third connector, the fourth connector, and the fifth connector are cancellous nails and/or locking nails.
In a particular embodiment, the first and second fasteners are cancellous and/or locked nails.
In the application, the apertures of the first fixing hole, the second fixing hole, the first through hole, the second through hole, the third through hole, the fourth through hole, the fifth through hole and the sixth through hole are the same, so that the hip joint revision prosthesis can be flexibly selected and assembled to achieve the purpose of being matched with the complex bone defect shape of a patient.
FIG. 21 shows the effect of the acetabular cup in use in a hip joint. The hip joint comprises an ilium 3, a coccyx 1, a pubis 4, an ischial bone 5 and an acetabular fossa. In use, acetabular cup 100 is placed within the acetabular socket of the hip joint and acetabular cup 100 is secured to the acetabular socket by cancellous screws and/or locking screws or bone cement as known in the art through first through holes 101.
FIG. 22 shows an effect of the acetabular cup and universal filler block in use in conjunction with a hip joint. The acetabular cup 100 is placed in the acetabular socket of the hip joint and the universal filling block 200 is placed between the acetabular cup 100 and the acetabular socket for supplementing the formation of the acetabular socket and its peripheral bone defects; the first mating surface of universal filler block 200 mates snugly with the outer surface of acetabular cup 100. The universal filling block 200 is provided with a second through hole, and a first connecting piece penetrates through the first through hole and the second through hole to connect the acetabular cup 100 and the universal filling block 200, so that the first matching surface is matched with the outer surface of the acetabular cup 100 in a matching manner, and two ends of the first connecting piece can be fixed with the acetabular fossa.
Figure 23 shows the effect of the acetabular cup and acetabular filler block in use in conjunction with a hip joint. The acetabular cup 100 is arranged in the acetabulum of the hip joint, and the acetabular filling block 300 is arranged on the side edge of the acetabular cup 100 and is used for supplementing and forming an acetabular socket and bone defects around the acetabular socket; the acetabular filling block 300 comprises a second matching surface, and a third through hole is formed in the acetabular filling block 300. In use, the first through hole of the acetabular cup 100 and the third through hole of the acetabular filling block 300 are penetrated through by the second connector to connect the acetabular cup 100 and the acetabular filling block 300 such that the second mating surface fits snugly against the outer surface of the acetabular cup 100 and the two ends of the second connector can be secured to the acetabular socket, respectively.
FIG. 23 shows the effect of the acetabular cup and iliac filler block in use in conjunction with a hip joint. The acetabular cup 100 is arranged in the acetabulum of the hip joint, the ilium filling block is provided with a fourth through hole and further comprises a third matching surface, and the third matching surface of the ilium filling block 400 is matched with the outer surface of the acetabular cup 100 in a matching manner and is used for supplementing the ilium 3 defect. In use, a third connector is used to extend through the first through hole of the acetabular cup 100 and the fourth through hole of the iliac filling block 400 to connect the acetabular cup 100 and the iliac filling block 400 such that the third mating surface mates with the outer surface of the acetabular cup 100; along the direction far away from the acetabulum cup, the cross section of the ilium filling block 400 is gradually reduced, fixing holes 403 are arranged on the ilium filling block with gradually changed cross section, and the ilium filling block 400 and the ilium 3 of the hip joint can be fixed through second fasteners.
The utility model is determined according to the bone defect condition of the patient and is divided into the following four conditions,
the first condition is composed of an acetabulum cup, and a through hole on the outer surface of the acetabulum cup is in direct contact with an acetabulum socket of a human body;
the second case is: the acetabulum cup is composed of any one of a universal filling block, an acetabulum filling block, an ilium filling block, an ischium filling block and a pubis filling block, and the acetabulum cup;
the third case is: the acetabulum cup is composed of any two of a universal filling block, an acetabulum filling block, an ilium filling block, an ischium filling block and a pubis filling block;
the fourth case is: the acetabulum cup is composed of any three of a universal filling block, an acetabulum filling block, an ilium filling block, an ischium filling block and a pubis filling block;
the fifth case is: the acetabulum cup is composed of any four of a universal filling block, an acetabulum filling block, an ilium filling block, an ischium filling block and a pubis filling block;
the sixth case is: comprises a universal filling block, an acetabulum filling block, an ilium filling block, an ischium filling block, a pubis filling block and an acetabulum cup.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. The hip revision prosthesis comprises an acetabular cup and a universal filling block, wherein the acetabular cup is hemispherical and is provided with first through holes, the distance between any two adjacent first through holes is equal, the universal filling block is hemispherical and is used for supplementing and forming an acetabular socket and bone defects around the acetabular socket; the universal filling block is provided with a plurality of second through holes;
the universal spacer includes a first mating face;
in use, the first connector is employed to extend through the first and second through-holes to connect the acetabular cup and the universal filler block such that the first mating surface mates with an outer surface of the acetabular cup.
2. The hip revision prosthesis according to claim 1, wherein the distance between the centers of two adjacent first through holes is 7 to 17mm;
and/or the inner diameter of the acetabular cup is 45-55 mm, and the outer diameter of the acetabular cup is 52-62 mm;
and/or the aperture of the first through hole is 5-8 mm;
and/or the number of the first through holes is 16-31.
3. The revision hip prosthesis of claim 1, further comprising an acetabular filler block and a plurality of second connectors, the acetabular filler block being no more than one-quarter spherical for supplementing bone defects forming the acetabular socket and its periphery; the acetabulum filling block is provided with a plurality of third through holes;
the acetabular filler block comprises a second mating surface;
in use, the second connector is adapted to extend through the first and third through-holes to connect the acetabular cup and the acetabular filler block such that the second mating surface matingly fits with the outer surface of the acetabular cup.
4. The revision hip prosthesis of claim 3, wherein the acetabular filler block further comprises a fixation surface, the fixation surface defining a first fixation hole, the first fixation hole securing the acetabular filler block to the hip joint via a first fixation member.
5. The hip revision prosthesis of claim 1, further comprising an iliac filling block and a plurality of third connectors, wherein the iliac filling block is provided with a fourth through hole;
the ilium filling block is used for supplementing an ilium defect and comprises a third matching surface;
in use, the third connector is used to penetrate the first through hole and the fourth through hole to connect the acetabular cup and the iliac filling block so that the third mating surface is matched with the outer surface of the acetabular cup in a matching manner.
6. The hip revision prosthesis of claim 5, wherein the iliac filling block tapers in cross-section in a direction away from the acetabular cup.
7. The hip revision prosthesis of claim 1, further comprising an ischial filling block and a plurality of fourth connecting pieces, wherein a fifth through hole is formed in the ischial filling block;
the ischial filling block is in a round table shape and is used for supplementing ischial defects, and the ischial filling block comprises a fourth matching surface;
in use, a fourth connector is used to penetrate the first through hole and the fifth through hole to connect the acetabular cup and the ischial filling block so that the fourth mating surface is matched with the outer surface of the acetabular cup in a matching manner;
and/or, the ischial bone filling block is provided with a sixth through hole;
the pubis filling block is in a round table shape and used for supplementing a pubis defect, and the pubis filling block comprises a fifth matching surface; the fifth matching surface is matched with the outer surface of the acetabular cup in a matching way;
in use, a fifth connector is used to extend through the first and sixth through holes to connect the acetabular cup with the pubic filler block such that the fifth mating surface mates snugly with the outer surface of the acetabular cup.
8. The hip revision prosthesis of claim 7, wherein the ischial filling blocks taper in cross-section in a direction away from the acetabular cup;
and/or the cross-section of the pubic filling block gradually decreases in a direction away from the acetabular cup.
9. The hip revision prosthesis of claim 1, 3, 5 or 7, wherein the first, second, third, fourth, fifth connectors are cancellous and/or locking nails.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123038343.1U CN217660299U (en) | 2021-12-06 | 2021-12-06 | Hip joint revision prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123038343.1U CN217660299U (en) | 2021-12-06 | 2021-12-06 | Hip joint revision prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217660299U true CN217660299U (en) | 2022-10-28 |
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ID=83701082
Family Applications (1)
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| CN202123038343.1U Active CN217660299U (en) | 2021-12-06 | 2021-12-06 | Hip joint revision prosthesis |
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