CN114129308A - 3D prints fixed integration back way neck pillow and fuses false body - Google Patents
3D prints fixed integration back way neck pillow and fuses false body Download PDFInfo
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- CN114129308A CN114129308A CN202111344531.9A CN202111344531A CN114129308A CN 114129308 A CN114129308 A CN 114129308A CN 202111344531 A CN202111344531 A CN 202111344531A CN 114129308 A CN114129308 A CN 114129308A
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- 230000010354 integration Effects 0.000 title claims description 4
- 230000004927 fusion Effects 0.000 claims abstract description 69
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 238000010146 3D printing Methods 0.000 claims abstract description 10
- 241001079814 Symphyotrichum pilosum Species 0.000 claims abstract description 10
- 235000004224 Typha angustifolia Nutrition 0.000 claims abstract description 10
- 230000008468 bone growth Effects 0.000 claims abstract description 5
- 230000001054 cortical effect Effects 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims abstract description 4
- 238000005516 engineering process Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000010894 electron beam technology Methods 0.000 claims description 3
- 206010067484 Adverse reaction Diseases 0.000 abstract description 2
- 230000006838 adverse reaction Effects 0.000 abstract description 2
- 210000000103 occipital bone Anatomy 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 3
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 210000003484 anatomy Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000000399 orthopedic effect Effects 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- 208000000860 Compassion Fatigue Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 206010052779 Transplant rejections Diseases 0.000 description 1
- 230000000735 allogeneic effect Effects 0.000 description 1
- 238000003759 clinical diagnosis Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000000642 iatrogenic effect Effects 0.000 description 1
- 210000003692 ilium Anatomy 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002188 osteogenic effect Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Images
Classifications
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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
- A61F2/28—Bones
-
- 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
- A61F2002/30985—Designing or manufacturing processes using three dimensional printing [3DP]
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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
The invention discloses a 3D printing, fixing and fusing integrated posterior cervical pillow fusion prosthesis which comprises a fusion part arranged between an occiput and a spinous process, wherein the fusion part is of a porous metal structure convenient for bone growth, the upper end of the fusion part is attached to cortical bone below an occiput node, and the lower end of the fusion part is provided with a dovetail-shaped opening structure clamped with the spinous process; the fixing part is positioned on the curved surface of the fusion part and is integrally formed with the fusion part, the fixing part is of a solid metal structure, and the fixing part comprises a longitudinal beam positioned on the axis of the fusion part and transverse connecting beams which are symmetrical relative to the longitudinal beam and transversely arranged; the longitudinal beam comprises a nail placing part positioned at the upper end of the transverse connecting beam and a bearing beam positioned at the lower end of the nail placing part, and the nail placing part is provided with a occipital screw hole; the two ends of the transverse connecting beam are provided with cervical vertebra connecting rod joints, and the prosthesis is fixedly connected with a cervical vertebra nail rod system through the cervical vertebra connecting rod joints. The invention integrates the fixing and fusing functions, simplifies the operation process and avoids the adverse reaction caused by bone grafting.
Description
Technical Field
The invention relates to an implant in an orthopedic body, in particular to a 3D printing, fixing and fusing integrated posterior cervical pillow fusion prosthesis.
Background
In the process of clinical diagnosis and treatment of orthopedics department, the injury and instability of the upper cervical vertebra caused by various diseases such as trauma, tumor, inflammation and the like can be often seen, and the stability of the head and the neck of a patient needs to be recovered by a posterior cervical pillow fusion operation.
At present, the cervical and occipital fusion mainly comprises two parts, namely, the cervical vertebra and the occipital bone are fixed through a nail rod or nail plate system, but the fixation stability of the nail rod or the nail plate is relatively poor, and the implant can be loosened, displaced and even broken after the operation; in order to avoid the above situation, usually after the fixation is completed, an autologous ilium, a variant or an artificial bone block is also selected to be placed between the occiput and the normal cervical spinous process and vertebral plate, and bone grafting fusion is performed to further enhance the stability of the postoperative head and neck.
However, autologous bone has limited sources and causes secondary trauma; the allograft bone may have the consequences of graft rejection reaction, graft bone absorption, poor healing and the like. Due to the defects and limitations of bone grafting fusion, the current operation effect of neck pillow fusion is difficult to meet the health requirements of the operation of a clinician and a patient.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a 3D printing, fixing and fusing integrated posterior cervical pillow fusion prosthesis which does not need bone grafting and integrates fixing and fusing functions.
In order to achieve the purpose, the invention adopts the following technical scheme:
3D prints fixed integration back way neck pillow and fuses false body, include
The fusion part is arranged between the occiput and the spinous process and is in a curved surface shape, the fusion part is of a porous metal structure convenient for bone growth, the upper end of the fusion part is attached to cortical bone below the occipital tubercle, and the lower end of the fusion part is provided with a dovetail-shaped opening structure clamped with the spinous process;
the fixing part is positioned on the curved surface of the fusion part and integrally formed with the fusion part, the fixing part is of a solid metal structure, and the fixing part comprises a longitudinal beam positioned on the axis of the fusion part and transverse connecting beams which are symmetrical relative to the longitudinal beam and transversely arranged;
the longitudinal beam comprises a nail placing part positioned at the upper end of the transverse connecting beam and a bearing beam positioned at the lower end of the nail placing part, and the nail placing part is provided with occipital screw holes;
the two ends of the transverse connecting beam are provided with cervical vertebra connecting rod joints, and the prosthesis is fixedly connected with a cervical vertebra nail rod system through the cervical vertebra connecting rod joints.
Furthermore, the upper surface and the lower surface of the nail placing part are respectively in smooth connection with the upper surface and the lower surface of the fusion part, the bearing beam and the transverse connecting beam are embedded on the upper surface of the fusion part, and the upper surface of the bearing beam is in smooth connection with the upper surface of the fusion part.
Furthermore, two occipital screw holes which are arranged along the longitudinal direction are arranged on the nail placing part.
Furthermore, the cervical vertebra connecting rod joint is of a cylindrical structure, a connecting hole for the cervical vertebra connecting rod in the cervical vertebra nail rod system to transversely penetrate is formed in the cervical vertebra connecting rod joint, and the cervical vertebra connecting rod is fixedly connected with the cervical vertebra connecting rod joint through a connecting screw.
Furthermore, the longitudinal beam, the transverse connecting beam and the cervical vertebra connecting rod joint in the fusion part and the fixing part are integrally prepared and molded by adopting a metal 3D printing technology based on a laser selective melting or electron beam melting technology.
Furthermore, the width of the bearing beam is 4-6mm, and the thickness of the bearing beam is 2-5 mm.
Compared with the prior art, the invention has the following technical effects:
compared with the prior posterior cervical pillow fusion (comprising 2 parts, wherein 1 is the fixation of cervical vertebra and occipital bone, and 2 is the bone grafting fusion between occipital bone and cervical vertebra), the invention simplifies the operation process, and leads the fixation of cervical vertebra and occipital bone and the occipital neck fusion to be completed at one time through a prosthesis; the prosthesis can be matched with a traditional cervical vertebra nail rod system for use through the cervical vertebra connecting rod joint, and the applicability is strong; the fusion part adopting the porous structure is beneficial to bone growth of a bonding interface, thereby avoiding iatrogenic wound caused by bone grafting of a self-body bone and adverse reactions such as bone grafting rejection reaction, poor bone grafting healing, foreign body bone absorption and the like possibly generated by large foreign body bone grafting; the mechanical strength of the metal prosthesis is higher than that of autologous and allogeneic bone blocks, and the short-term stability after the neck pillow fusion is better; in the long term, the porous structure is beneficial to the bone ingrowth of the occiput, the spinous process of the cervical vertebra and the vertebral plate, biological fusion locking can be formed, the stability of the prosthesis and the internal fixing system is further enhanced, and the long-term safety and stability after the cervical pillow fusion of the patient are ensured.
Drawings
Fig. 1 is a schematic structural diagram of a 3D printed, fixed and fused integrated posterior cervical pillow fusion prosthesis according to an embodiment of the present invention;
fig. 2 is a side view of a 3D printed fixation-fusion integrated posterior cervical pillow fusion prosthesis according to embodiments of the present invention;
fig. 3 is a front view of a 3D printed, fixed and fused integrated posterior cervical pillow fusion prosthesis according to an embodiment of the present invention in a use state;
fig. 4 is a side view of a 3D printed fixation-fusion integrated posterior cervical pillow fusion prosthesis according to an embodiment of the present invention in a use state.
In the figure: 1. a fusion section; 2. a spandrel girder; 3. a nail placing part; 4. a cervical vertebra connecting rod joint; 5. occipital screw holes; 6. a transverse connecting beam; 7. a connecting screw; 8. a cervical vertebra connecting rod; 9. cervical vertebra screw.
Detailed Description
The following detailed description of the present invention is provided in connection with the accompanying drawings and examples.
Referring to fig. 1-4, the present embodiment provides a 3D printing, fixing and fusing integrated posterior cervical pillow fusion prosthesis, which includes a fusion portion 1 installed between an occiput and a spinous process and having a curved surface shape, wherein the specific size and radian of the fusion portion 1 are individually designed according to a three-dimensional CT of cervical vertebrae of a patient and an operation scheme; the fusion part 1 is of a porous metal structure convenient for bone growth, the upper end of the fusion part 1 is attached to cortical bone below the occipital tubercle, the lower end of the fusion part 1 is provided with a dovetail-shaped opening structure clamped with the spinous process, and the specific opening angle, shape and size of the opening structure and the appearance of a fusion interface between the spinous process and a vertebral plate are individually designed according to the three-dimensional CT of the cervical vertebra of a patient, so that the prosthesis is clamped with the spinous process, and the attachment is firm and tight, and the fusion is convenient;
the fixing part is positioned on the curved surface of the fusion part 1 and is integrally formed with the fusion part 1, and the fixing part is of a solid metal structure and is used for enhancing the supporting strength of the prosthesis; the fixing part comprises a longitudinal beam positioned on the central axis of the fusion part 1 and transverse connecting beams 6 which are symmetrical about the longitudinal beam and are transversely arranged;
the longitudinal beam comprises a nail placing part 3 positioned at the upper end of the transverse connecting beam 6 and a bearing beam 2 positioned at the lower end of the nail placing part 3, two occipital screw holes 5 which are longitudinally arranged are arranged on the nail placing part 3, the prosthesis can be fixed below an occipital tubercle through the occipital screw holes 5, and the occipital screw holes 5 are specifically arranged and designed before operation according to cervical vertebra three-dimensional CT modeling; the upper surface and the lower surface of the nail placing part 3 are respectively and smoothly jointed with the upper surface and the lower surface of the fusion part 1, namely, the lower surface of the nail placing part 3 is also attached to the cortical bone below the occipital tubercle, so that the prosthesis and the occipital bone are more firmly fixed; the bearing beam 2 and the transverse connecting beam 6 are embedded on the upper surface of the fusion part 1, and the upper surfaces of the bearing beam 2 and the transverse connecting beam 6 are smoothly connected with the upper surface of the fusion part 1; preferably, the width of the bearing beam 2 is 4-6mm, and the thickness is 2-5 mm;
two ends of the transverse connecting beam 6 are provided with cervical vertebra connecting rod joints 4, and the prosthesis is fixedly connected with a cervical vertebra nail rod system through the cervical vertebra connecting rod joints 4; wherein, the cervical vertebra nail rod system is a device for fixing cervical vertebra in the prior art, and comprises a cervical vertebra connecting rod 8 and a cervical vertebra screw 9; specifically, cervical vertebra connective bar connects 4 and fuses the cylindrical structure of portion 1 around it for the perpendicular to, and cervical vertebra connective bar connects and is equipped with the connecting hole that supplies 8 traversing of cervical vertebra connective bar on 4, and the top that the cervical vertebra connective bar connects 4 is equipped with the screw hole, and cervical vertebra connective bar 8 is fixed through 7 butts of connecting screw with the screw hole matching.
The longitudinal beam, the transverse connecting beam 6 and the cervical vertebra connecting rod joint 4 in the fusion part 1 and the fixing part are integrally prepared and molded by adopting a metal 3D printing technology based on a laser selective melting or electron beam melting technology.
The 3D printing, fixing and fusing integrated posterior cervical pillow fusing prosthesis provided in the embodiment is made of titanium alloy as a base material, and can be replaced by tantalum metal or other medical metal materials according to the surgical design requirements;
in addition, in order to promote the fusion between the prosthesis and the host bone, the invention also relates to the surface modification of the porous interface of the prosthesis contacting with the bone and the composite osteogenic factor.
The design and preparation procedures of the 3D printing, fixing and fusing integrated posterior cervical pillow fusion prosthesis provided by the invention are as follows:
modeling is carried out before an operation according to the cervical vertebra three-dimensional CT (scanning layer thickness is 0.625mm) of a patient, and a three-dimensional model of a posterior cervical pillow fusion prosthesis is designed in a computer by using Mimcs software according to the anatomical structure and the operation scheme; and finally, introducing the digitized three-dimensional model into titanium alloy or tantalum metal 3D printing equipment for integrated preparation and production.
In addition, aiming at emergency patients, the prosthesis design and preparation period is long, and the prosthesis has a simple structure and high adaptability, so that the prostheses with 3 specifications, large, medium and small, can be prefabricated according to the anatomical structures of the upper cervical vertebrae of normal people, and are convenient for clinical use.
Claims (6)
1. The utility model provides a 3D prints fixed integration back way neck pillow and fuses false body which characterized in that: comprises that
The fusion part (1) is arranged between the occiput and the spinous process and is in a curved surface shape, the fusion part (1) is of a porous metal structure convenient for bone growth, the upper end of the fusion part (1) is attached to cortical bone below the occipital tubercle, and the lower end of the fusion part (1) is provided with a dovetail-shaped opening structure clamped with the spinous process;
the fixing part is positioned on the curved surface of the fusion part (1) and integrally formed with the fusion part (1), the fixing part is of a solid metal structure, and the fixing part comprises a longitudinal beam positioned on the central axis of the fusion part (1) and transverse connecting beams (6) which are symmetrical about the longitudinal beam and transversely arranged;
the longitudinal beam comprises a nail placing part (3) positioned at the upper end of the transverse connecting beam (6) and a bearing beam (2) positioned at the lower end of the nail placing part (3), and the nail placing part (3) is provided with an occipital screw hole (5);
the two ends of the transverse connecting beam (6) are provided with cervical vertebra connecting rod joints (4), and the prosthesis is fixedly connected with a cervical vertebra nail rod system through the cervical vertebra connecting rod joints (4).
2. The 3D printed, fixed and fused integrated posterior cervical pillow fusion prosthesis of claim 1, wherein: put the upper and lower surface of nail portion (3) respectively with the upper and lower surface smooth joint of fuse portion (1), spandrel girder (2) and transverse connection roof beam (6) are inlayed and are located the upper surface of fusing portion (1), and its upper surface with the upper surface smooth joint of fusing portion (1).
3. The 3D printed, fixed and fused integrated posterior cervical pillow fusion prosthesis of claim 1, wherein: two occipital screw holes (5) which are arranged along the longitudinal direction are arranged on the nail placing part (3).
4. The 3D printed, fixed and fused integrated posterior cervical pillow fusion prosthesis of claim 1, wherein: the cervical vertebra connecting rod joint (4) is of a cylindrical structure, a connecting hole for the cervical vertebra connecting rod (8) in the cervical vertebra nail rod system to transversely penetrate is formed in the cervical vertebra connecting rod joint (4), and the cervical vertebra connecting rod (8) is fixedly connected with the cervical vertebra connecting rod joint (4) through a connecting screw (7).
5. The 3D printed, fixed and fused integrated posterior cervical pillow fusion prosthesis of claim 1, wherein: the fusion part (1) and the longitudinal beam, the transverse connecting beam (6) and the cervical vertebra connecting rod joint (4) in the fixing part are integrally prepared and molded by adopting a metal 3D printing technology based on a laser selective melting or electron beam melting technology.
6. The 3D printed, fixed, fused, integrated posterior cervical pillow fusion prosthesis of any of claims 1-2, wherein: the width of the bearing beam (2) is 4-6mm, and the thickness of the bearing beam is 2-5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111344531.9A CN114129308A (en) | 2021-11-15 | 2021-11-15 | 3D prints fixed integration back way neck pillow and fuses false body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111344531.9A CN114129308A (en) | 2021-11-15 | 2021-11-15 | 3D prints fixed integration back way neck pillow and fuses false body |
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| Publication Number | Publication Date |
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| CN114129308A true CN114129308A (en) | 2022-03-04 |
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| CN202111344531.9A Pending CN114129308A (en) | 2021-11-15 | 2021-11-15 | 3D prints fixed integration back way neck pillow and fuses false body |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117958936A (en) * | 2024-03-29 | 2024-05-03 | 天津正天医疗器械有限公司 | Occipital cervical bone plate |
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| CN112155806A (en) * | 2020-10-23 | 2021-01-01 | 中国人民解放军空军军医大学 | Posterior spinal reconstruction device after laminectomy |
| CN112168431A (en) * | 2020-10-23 | 2021-01-05 | 中国人民解放军空军军医大学 | Functional bionic porous titanium alloy femoral head support rod and preparation method thereof |
| CN216455498U (en) * | 2021-11-15 | 2022-05-10 | 中国人民解放军空军军医大学 | 3D prints fixed integration back way neck pillow and fuses false body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117958936A (en) * | 2024-03-29 | 2024-05-03 | 天津正天医疗器械有限公司 | Occipital cervical bone plate |
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