CN108992213B - Acetabular cup with bone-like trabecula structure layer and manufacturing method thereof - Google Patents

Acetabular cup with bone-like trabecula structure layer and manufacturing method thereof Download PDF

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CN108992213B
CN108992213B CN201710417910.3A CN201710417910A CN108992213B CN 108992213 B CN108992213 B CN 108992213B CN 201710417910 A CN201710417910 A CN 201710417910A CN 108992213 B CN108992213 B CN 108992213B
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bone
acetabular cup
porous layer
metal substrate
layer
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CN108992213A (en
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唐飞
尚亚光
杨长桂
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Shanghai Boma Medical Technology Co ltd
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Shanghai Boma Medical Technology Co ltd
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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
    • 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
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • 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
    • A61F2/3094—Designing or manufacturing processes
    • A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • 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
    • A61F2/3094—Designing or manufacturing processes
    • A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • A61F2002/30943—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using mathematical models
    • 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
    • A61F2/3094—Designing or manufacturing processes
    • A61F2002/3097—Designing or manufacturing processes using laser
    • 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
    • A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
    • 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
    • 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
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Cardiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Transplantation (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Manufacturing & Machinery (AREA)
  • Prostheses (AREA)

Abstract

The invention discloses an acetabular cup with a bone-like trabecula structure layer, wherein the acetabular cup is composed of a metal substrate and a porous layer, a plurality of micropores are arranged inside and on the outer surface of the porous layer, a plurality of fixed teeth are arranged on the periphery of the porous layer, the porous layer is arranged on the periphery of the metal substrate, a fixing nail hole and an installation hole are arranged on the metal substrate, the fixing nail hole and the installation hole penetrate through the metal substrate and the porous layer, and the metal substrate is a hollow hemisphere. The acetabular cup with the trabecular bone-like structure layer adopts a trabecular bone-like structure, can adapt to individual diseases, and ensures the bonding strength and the initial stability of the implanted prosthesis; by adopting the selective laser fusion forming technology, the forming precision is high, the rapid forming can be realized, the design period is shortened, and the urgency of the patient requirements is met by matching with different individual requirements; the direction of the fixing nail hole can be freely adjusted, the optimal position design of the fixing nail hole is achieved, the structure is simple, and the use is convenient.

Description

Acetabular cup with bone-like trabecula structure layer and manufacturing method thereof
Technical Field
The invention relates to the technical field of medical instruments, in particular to an acetabular cup with a bone-like trabecular structure layer.
Background
The outer surface of the cup component of the hip joint replacement prosthesis is generally hemispherical, and a coating which can make the bone bond more firm is usually sprayed on the outer surface of the cup component, such as sand blasting, for example, hydroxyapatite and the like. Therefore, in the prior art, the treatment method of the surface of the mortar cup only can achieve the effect of surface combination, cannot achieve good biological fixation effect, and cannot achieve initial stability.
Disclosure of Invention
The invention aims to solve the technical problem of providing an acetabular cup with a bone-like trabecular structure layer, which can adapt to individual diseases by adopting the bone-like trabecular structure, can better ensure the bonding strength and the initial stability of the implanted prosthesis, and can effectively embed a fixing tooth into peripheral sclerotin to play a role in fixing when in use; the rapid modeling and the rapid molding can be realized, the design period is shortened, and the urgency of the requirements of patients is met by matching with different individual requirements; simple structure, convenient to use for solve the defect that prior art leads to.
The invention also provides a manufacturing method of the acetabular cup with the bone-like trabecular structure layer.
In order to solve the technical problems, the invention provides the following technical scheme: the acetabulum cup with a bone trabecula-like structure layer is characterized in that the acetabulum cup is composed of a metal substrate and a porous layer, a plurality of micropores are formed in the porous layer and on the outer surface of the porous layer, a plurality of fixed teeth are arranged on the periphery of the porous layer, the porous layer is arranged on the periphery of the metal substrate, fixing nail holes and mounting holes are formed in the metal substrate, the fixing nail holes and the mounting holes penetrate through the metal substrate and the porous layer, and the metal substrate is a hollow hemisphere.
The acetabular cup with the bone trabecular-like structural layer is characterized in that the porous layer is 1-2 mm thick.
The acetabular cup with the bone-like trabecular structure layer is characterized in that the fixing teeth are uniformly distributed on the periphery of the porous layer.
The acetabular cup with the bone-like trabecular structure layer is characterized in that the fixing teeth are chamfered sawteeth.
The acetabular cup with the trabecular bone-like structural layer is characterized in that the installation hole is formed in the porous layer.
The acetabular cup with the bone-like trabecular structure layer is characterized in that the metal base is provided with three consistent fixing nail holes.
The acetabular cup with the trabecular bone-like structure layer is characterized in that the porous layer is a titanium alloy porous layer, and the metal substrate is a titanium alloy substrate.
The acetabular cup with the bone-like trabecular structure layer comprises the following steps:
step 1: according to the hip joint replacement part of the patient, taking a piece of sample bone at the pelvic acetabular fossa of the patient;
step 2: analyzing the porosity, the pore size of micropores and the bone pillars in the bone of the obtained sample, and collecting the data of the porosity, the pore size of micropores and the bone pillars obtained after analysis;
and step 3: modeling the collected data of porosity, micropore aperture and bone branch in the sample bone to prepare an acetabular cup model;
and 4, step 4: and forming the modeled acetabular cup model by adopting a laser fusion technology to prepare an artificial acetabular cup, and sterilizing and disinfecting the formed artificial acetabular cup.
According to the technical scheme provided by the invention, the acetabular cup with the bone-like trabecular structure layer has the following effects:
1. the bone-like trabecula structure is adopted, the porous layer arranged on the periphery of the metal substrate is provided with the fixed teeth, and the inner part and the periphery of the porous layer are provided with the micropores to form the bone-like trabecula structure layer, so that the bone-like trabecula structure can adapt to individual diseases, can better ensure the bonding strength and the initial stability of the implanted prosthesis, and can effectively embed the fixed teeth into the surrounding sclerotin to play a role in fixation when in use;
2. by adopting the selective laser fusion forming technology, the forming precision is high, the rapid forming can be realized, the design period is shortened, and the urgency of the patient requirements is met by matching with different individual requirements;
3. the position of the fixing nail hole can be freely adjusted according to the damaged condition of the pelvis of the patient, the optimal position design of the fixing nail hole is achieved, the structure is simple, and the use is convenient.
Drawings
FIG. 1 is a schematic view of an acetabular cup having a trabecular bone-like structural layer in accordance with the present invention;
FIG. 2 is a cross-sectional view of an acetabular cup of the invention having a trabecular bone-like structural layer.
Wherein the reference numbers are as follows: metal substrate 101, porous layer 102, micropores 103, staple holes 104, mounting holes 105, and stationary teeth 201.
Detailed Description
In order to make the technical means, the characteristics, the purposes and the functions of the invention easy to understand, the invention is further described with reference to the specific drawings.
The invention provides an acetabular cup with a bone-like trabecular structure layer, and aims to ensure the bonding strength and the initial stability of a prosthesis after implantation, quickly shape and form, shorten the design period, meet the urgency of patient requirements according to different requirements of individuals, adjust the orientation of a fixing nail hole and achieve the optimal position design of the fixing nail hole.
As shown in fig. 1, an acetabular cup with a trabecular bone-like structure layer is composed of a metal base 101 and a porous layer 102, wherein a plurality of micropores 103 are arranged inside and on the outer surface of the porous layer 102, a plurality of fixing teeth 201 are arranged on the periphery of the porous layer 102, the porous layer 102 is arranged on the periphery of the metal base 101, a fixing nail hole 104 and an installation hole 105 are arranged on the metal base 101, the fixing nail hole 104 and the installation hole 105 both penetrate through the metal base 101 and the porous layer 102, and the metal base 101 is a hollow hemisphere.
As shown in fig. 2, the thickness of the porous layer 102 adopted by the acetabular cup with the trabecular bone-like structural layer provided by the embodiment is 1 mm-2 mm, and the plurality of micropores 103 arranged on the inner and outer surfaces of the porous layer 102 form the trabecular bone-like structure, so that the bonding strength and the initial stability of the acetabular cup after being implanted are ensured.
The fixing teeth 201 adopted by the acetabular cup with the bone-like trabecular structure layer provided by the embodiment are uniformly distributed on the periphery of the porous layer 102, wherein the fixing teeth 201 are chamfer sawteeth, the chamfer sawteeth 201 can be selected according to the damage condition of an acetabular fossa of a patient, the chamfer sawteeth 201 are adopted for patients with slow bone growth, the outer edges of the chamfer sawteeth can be embedded into peripheral bone to play a fixing role, the falling is prevented, the stability of initial implantation is ensured, and the chamfer sawteeth 201 can not be selected for patients with fast bone growth.
The installation hole 105 of the acetabular cup with the trabecular bone-like structural layer provided by the embodiment is arranged at the top of the metal substrate 101 and the porous layer 102, so that the acetabular cup is convenient to use during installation.
The metal base 101 adopted by the acetabular cup with the trabecular bone-like structure layer provided by the embodiment is provided with three consistent fixing nail holes 104, the positions of the three fixing nail holes 104 are fixed, and when the acetabular cup is manufactured, a proper fixing point can be selected according to the condition of a pelvis of a patient to set the positions of the fixing nail holes 104, so that the requirement of an individual patient can be met conveniently.
The porous layer 102 adopted by the acetabular cup with the trabecular bone-like structure layer provided by the embodiment is a titanium alloy porous layer, the titanium alloy porous layer is provided with a plurality of micropores 103, the micropores 103 are arranged in the titanium alloy porous layer and on the surface of the titanium alloy porous layer in an intricate and complex manner, when in use, patient bone can be easily attached to the inside of the micropores 103, so that the stability between the initial patient bone and the acetabular cup is ensured, wherein the diameter of the micropores 103 is 100-2000 micrometers, and the metal substrate 101 is a titanium alloy substrate.
The method for manufacturing the acetabular cup with the bone-like trabecular structure layer in the acetabular cup provided by the embodiment comprises the following steps:
step 1: according to the hip joint replacement part of a patient, taking a piece of sample bone at the pelvic acetabular fossa of the patient, wherein the bone of each patient is different, and aiming at each patient, taking a piece of sample bone to manufacture an acetabular cup;
step 2: analyzing the porosity, the pore size of micropores and the bone pillars in the bone of the obtained sample, collecting the data of the porosity, the pore size of micropores and the bone pillars obtained after analysis, and obtaining the bone trabecular structure most suitable for patients through analysis;
and step 3: modeling the collected data of porosity, micropore aperture and bone branch in the sample bone to prepare an acetabular cup model;
and 4, step 4: and forming the modeled acetabular cup model by adopting a laser fusion technology to prepare an artificial acetabular cup, and sterilizing and disinfecting the formed artificial acetabular cup.
The sterilized and disinfected artificial acetabular cup is subjected to vacuum packaging, so that pollution is prevented.
In conclusion, the acetabular cup with the bone-like trabecular structure layer can adapt to individual diseases by adopting the bone-like trabecular structure, the porous layer arranged on the periphery of the metal substrate is provided with the fixed teeth, and the micropores are arranged inside and outside the porous layer, so that the bonding strength and the initial stability of the implanted prosthesis can be better ensured, and the fixed teeth are effectively embedded into the surrounding sclerotin to play a role in fixation when in use; by adopting the selective laser fusion forming technology, the forming precision is high, the rapid forming can be realized, the design period is shortened, and the urgency of the patient requirements is met by matching with different individual requirements; the position of the fixing nail hole can be freely adjusted according to the damaged condition of the pelvis of the patient, the optimal position design of the fixing nail hole is achieved, the structure is simple, and the use is convenient.
Specific embodiments of the invention have been described above. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; various changes or modifications may be made by one skilled in the art within the scope of the claims without departing from the spirit of the invention, and without affecting the spirit of the invention.

Claims (4)

1. The acetabular cup with the bone-like trabecular structure layer is characterized in that the acetabular cup is composed of a metal substrate and a porous layer, a plurality of micropores are formed in the porous layer and on the outer surface of the porous layer, a plurality of fixing teeth are formed on the periphery of the porous layer, the porous layer is arranged on the periphery of the metal substrate, fixing nail holes and mounting holes are formed in the metal substrate, the fixing nail holes and the mounting holes penetrate through the metal substrate and the porous layer, the metal substrate is a hollow hemisphere, the fixing teeth are uniformly distributed on the periphery of the porous layer, the fixing teeth are chamfered sawteeth, and the metal substrate is provided with three consistent fixing nail holes;
the manufacturing method of the acetabular cup comprises the following steps:
step 1: according to the hip joint replacement part of the patient, taking a piece of sample bone at the pelvic acetabular fossa of the patient;
step 2: analyzing the porosity, the pore size of micropores and the bone pillars in the bone of the obtained sample, and collecting the data of the porosity, the pore size of micropores and the bone pillars obtained after analysis;
and step 3: modeling the collected data of porosity, micropore aperture and bone branch in the sample bone to prepare an acetabular cup model;
and 4, step 4: molding the modeled acetabular cup model by adopting a laser fusion technology to prepare an artificial acetabular cup, and sterilizing and disinfecting the molded artificial acetabular cup;
moreover, the acetabular cup can better ensure the bonding strength and the initial stability of the prosthesis after the prosthesis is implanted.
2. The acetabular cup with the trabecular-like structural layer of claim 1, wherein the porous layer has a thickness of 1 mm to 2 mm.
3. The acetabular cup with the trabecular bone-like structural layer of claim 1, wherein the mounting hole is disposed on top of the metal base and the porous layer.
4. The acetabular cup with the trabecular bone-like structural layer of claim 1, wherein the porous layer is a titanium alloy porous layer and the metal substrate is a titanium alloy substrate.
CN201710417910.3A 2017-06-06 2017-06-06 Acetabular cup with bone-like trabecula structure layer and manufacturing method thereof Active CN108992213B (en)

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CN111281616B (en) * 2020-03-11 2023-08-04 北京市春立正达医疗器械股份有限公司 Total hip metal cup prosthesis and manufacturing method thereof
CN112656549A (en) * 2020-05-22 2021-04-16 北京科仪邦恩医疗器械科技有限公司 Surface treatment method of acetabulum prosthesis and acetabulum prosthesis
CN111603274B (en) * 2020-05-28 2023-08-04 北京市春立正达医疗器械股份有限公司 Personalized customized acetabular prosthesis
US20220233319A1 (en) * 2021-01-27 2022-07-28 b-ONE Medical (Suzhou) Co., Ltd. Artificial acetabular cup and manufacturing method thereof
CN114452050A (en) * 2022-02-08 2022-05-10 宽岳骨科公司 Artificial hip joint and method for manufacturing same

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