CN218106153U - Combined reconstruction device for acetabular bone defect - Google Patents
Combined reconstruction device for acetabular bone defect Download PDFInfo
- Publication number
- CN218106153U CN218106153U CN202220286469.6U CN202220286469U CN218106153U CN 218106153 U CN218106153 U CN 218106153U CN 202220286469 U CN202220286469 U CN 202220286469U CN 218106153 U CN218106153 U CN 218106153U
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- China
- Prior art keywords
- acetabular bone
- reconstruction device
- bone defect
- combined reconstruction
- lining part
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 29
- 230000007547 defect Effects 0.000 title claims description 22
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000006978 adaptation Effects 0.000 claims abstract description 6
- 239000000084 colloidal system Substances 0.000 claims abstract description 5
- 210000000588 acetabulum Anatomy 0.000 claims description 15
- 210000003692 ilium Anatomy 0.000 claims description 6
- 210000002239 ischium bone Anatomy 0.000 claims description 6
- 210000003689 pubic bone Anatomy 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 3
- 239000002861 polymer material Substances 0.000 claims description 3
- 230000003044 adaptive effect Effects 0.000 claims 4
- 230000002950 deficient Effects 0.000 abstract description 4
- 230000033228 biological regulation Effects 0.000 abstract description 2
- 239000007943 implant Substances 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 239000002639 bone cement Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 210000003484 anatomy Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000003076 Osteolysis Diseases 0.000 description 1
- 208000002847 Surgical Wound Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000000735 allogeneic effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 210000004394 hip joint Anatomy 0.000 description 1
- 238000011540 hip replacement Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 208000029791 lytic metastatic bone lesion Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 238000010883 osseointegration Methods 0.000 description 1
- 210000004197 pelvis Anatomy 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
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- Prostheses (AREA)
Abstract
The utility model discloses a defective combination of acetabular bone is rebuild device, including mounting and interior lining member, the mounting be provided with the ball socket appearance trench of the interior lining member of adaptation, interior lining member be super radius spherical structure, interior lining member is provided with the spherical groove of adaptation femoral head. Interior lining part by the inside outside adaptation in ball socket appearance trench to it is fixed to adjust installation angle and adopt the colloid, mounting and the defective position adaptation of acetabular bone and adopt locking screw fixed, the utility model discloses have fixed reliable, the stable function, simply easy-to-use, convenient regulation.
Description
Technical Field
The utility model relates to an orthopedics medical treatment field, concretely relates to defective combination of acetabular bone is rebuild device.
Background
With the popularity of artificial hip replacement surgery, the number of patients treated by this surgery is increasing every year, and the number of patients requiring revision is also increasing proportionally. Acetabular lateral bone defects present a significant challenge in artificial total hip revision. The main methods currently used to solve this problem include:
1. the bone grafting comprises the steps that the implantation of autologous bone and allogeneic bone is limited by the source of a supply area and cannot be supplied fully; the latter is expensive and has problems such as rejection. The two also have the possibility of loosening the hip joint prosthesis device due to osteolysis and absorption, and the patient is difficult to realize early underground movement and self-care of life
2. The artificial bone material represented by synthetic calcium phosphate can substitute for bone grafting to a certain extent, has no source problem, but still has questionable osseointegration capability and long-term effect, and is still difficult to realize early stabilization and movement.
3. The metal implant filling adopts the solid-state formed prefabricated metal implant for filling, so that the structural defect of the acetabulum can be effectively reconstructed, and the early stability of the acetabulum prosthesis is obtained. There are currently two forms of implementation of this technology: one is a built-up metallic implant represented by a spacer (fig. 1). The device can effectively provide a stress conduction effect and can play a good filling effect on limited bone defects around the acetabulum. However, for the cases with large bone mass defect around the acetabulum, a plurality of cushion blocks are needed to be used for filling, the assembly in the operation has considerable technical operation difficulty, and meanwhile, the mutual fixation between the cushion blocks also has great problems.
Another solution for metal implants is to use an integrally designed prefabricated product. The product realizes the functions of filling the bone defect area and acetabulum at the same time, and has no problem of fixation failure among components. However, the installation of this type of product is difficult during the operation, and in order to obtain a satisfactory anteversion angle and abduction angle to stabilize the artificial joint against dislocation, the installation of this product must be completely consistent with the preoperative design. However, the "fault tolerance" of these products is too low and clinical use is still greatly limited due to the inevitable differences between pre-operative planning and actual conditions, limited exposure of surgical incisions, intraoperative accidents, etc.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a structural design is reasonable, has fixed reliable, the function is stable, simple easy-to-use, the defective combination of acetabular bone rebuilds device of function of convenient regulation.
The utility model provides a technical scheme that above-mentioned problem adopted is: a combined reconstruction device for acetabular bone defects comprises a fixing part and an inner lining part, wherein the fixing part is provided with a ball socket-like groove matched with the inner lining part, the inner lining part is of a super-radius spherical structure, and the inner lining part is provided with a spherical groove matched with a femoral head. The lining piece is outwards adapted from the inner side of the ball socket-shaped groove, the installation angle is adjusted, the lining piece is fixed by adopting colloid, and the fixing piece is adapted to the position with the acetabulum defect and is fixed by adopting a locking screw.
And further: the mounting is provided with first pterygoid lamina, second pterygoid lamina and third pterygoid lamina, and adopts locking screw fixed with ilium, pubis, ischium position adaptation respectively.
And further: the screw fixing directions of the first wing plate, the second wing plate and the third wing plate are 90 degrees.
And further: the fixing piece is made of metal materials.
And further: the lining part is made of high-wear-resistant polymer material.
Compared with the prior art, the utility model, have following advantage and effect:
(1) The product is designed according to the anatomical structure of pelvis and the geometrical shape of bone defect, and the fixing part of the device can obtain the maximum host bone contact. Screw fixing holes are arranged in the ilium, the pubis, the ischium and the like, wherein the fixing directions of the screw fixing holes form a certain included angle, so that certain restraint is realized, the device can be effectively locked, and reliable fixation is obtained.
(2) The product has few components, is linked into a stable whole by bone cement after being assembled, does not have the conditions of assembly scattering, separation and the like, and has stable function;
(3) The product is simple and easy to use, and the inner lining part can adjust the angle, thereby ensuring the matching of the acetabulum and the femoral head, the stability of the joint and the good range of motion. Compared with a cushion block device, the design and assembly are simple, and geometric assembly does not need to be considered too much; compared with an acetabulum cup with an integrated design, the acetabulum cup has a higher fault tolerance rate and can accept a certain degree of angle deviation.
Drawings
Fig. 1 is a schematic structural view of the combined reconstruction device for acetabular bone defects according to the embodiment of the present invention.
Fig. 2 is a schematic structural view of the combined reconstruction device for acetabular bone defects according to the embodiment of the present invention.
Fig. 3 is a schematic view of the installation structure of the combined reconstruction device for acetabular bone defect of the embodiment of the invention.
The reference numbers: fixing part 1, interior lining part 2, ball socket appearance trench 11, spherical groove 21, locking screw 3, first pterygoid lamina 12, second pterygoid lamina 13, third pterygoid lamina 14, ilium 5, pubis 6, ischium 7.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Referring to fig. 1-3, the present embodiment relates to a combined reconstruction device for acetabular bone defect, which comprises a fixing member 1 and a lining member 2;
the fixing part 1 is matched with the acetabulum defect part, and the fixing part 1 is provided with fixing wings and fixed with the periphery of the acetabulum defect part by adopting locking screws 3; the specific fixed wing is divided into a first wing plate 12, a second wing plate 13 and a third wing plate 14, which are respectively matched with the positions of the ilium 5, the pubis 6 and the ischium 7 and fixed by adopting a locking screw 3, as shown in fig. 3, wherein the screw fixing directions of the first wing plate 12, the second wing plate 13 and the third wing plate 14 are arranged at 90 degrees;
the fixing part 1 is provided with a ball socket-shaped groove 11 matched with the inner lining part 2, the inner lining part 2 is of a super-radius spherical structure, the inner lining part 2 is provided with a spherical groove 21 matched with the femoral head, the inner lining part 2 is matched outwards from the inner side of the ball socket-shaped groove 11, a proper installation angle is adjusted, the inner lining part is fixed by adopting colloid, and the concrete colloid can be bone cement.
The fixing part 1 is made of metal material, such as medical titanium alloy material, the lining part 2 is made of wear-resistant high polymer material, such as high cross-linked polyethylene material,
the fixation member 1 of the device is designed in this embodiment to maximize host bone contact, depending on the pelvic anatomy and the geometry of the bone defect. Screw fixing holes are formed in the ilium 5, the pubis 6, the ischium 7 and the like, and the fixing directions of the screw fixing holes form a certain included angle, so that certain restraint is realized, the device can be effectively locked, and reliable fixation is achieved.
The device in the embodiment has few components, is linked into a stable whole by bone cement after being assembled, does not have the conditions of assembly scattering, separation and the like, and has stable function;
the device is simple and easy to use, and the inner lining part 2 can adjust the angle, thereby ensuring the matching of the acetabulum and the femoral head, the stability of the joint and the good range of motion. Compared with a cushion block device, the design and assembly are simple, and the geometric assembly is not required to be considered too much; compared with an acetabulum cup with an integrated design, the acetabulum cup has a higher fault tolerance rate and can accept a certain degree of angle deviation.
The above description of the present invention is intended to be illustrative. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (5)
1. A combined reconstruction device of an acetabular bone defect, comprising: the fixing part is provided with a ball socket-shaped groove of the adaptive lining part, the lining part is of a super-radius spherical structure and is provided with a spherical groove of an adaptive femoral head, the lining part is internally and externally adaptive to the ball socket-shaped groove, the installation angle is adjusted, the lining part is fixed by adopting colloid, and the fixing part is adaptive to the defect position of the acetabulum and fixed by adopting a locking screw.
2. The combined reconstruction device of an acetabular bone defect of claim 1, wherein: the mounting is provided with first pterygoid lamina, second pterygoid lamina and third pterygoid lamina, and adopts locking screw fixed with ilium, pubis, ischium position adaptation respectively.
3. The combined reconstruction device of an acetabular bone defect of claim 2, wherein: the screw fixing directions of the first wing plate, the second wing plate and the third wing plate are arranged at 90 degrees.
4. The combined reconstruction device of an acetabular bone defect of claim 1, wherein: the fixing piece is made of metal materials.
5. The combined reconstruction device of an acetabular bone defect of claim 1, wherein: the lining part is made of high-wear-resistant polymer material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220286469.6U CN218106153U (en) | 2022-02-11 | 2022-02-11 | Combined reconstruction device for acetabular bone defect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220286469.6U CN218106153U (en) | 2022-02-11 | 2022-02-11 | Combined reconstruction device for acetabular bone defect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218106153U true CN218106153U (en) | 2022-12-23 |
Family
ID=84493623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220286469.6U Active CN218106153U (en) | 2022-02-11 | 2022-02-11 | Combined reconstruction device for acetabular bone defect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218106153U (en) |
-
2022
- 2022-02-11 CN CN202220286469.6U patent/CN218106153U/en active Active
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