CN109528366B - Displacement-preventing vertebral body prosthesis - Google Patents
Displacement-preventing vertebral body prosthesis Download PDFInfo
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- CN109528366B CN109528366B CN201811552526.5A CN201811552526A CN109528366B CN 109528366 B CN109528366 B CN 109528366B CN 201811552526 A CN201811552526 A CN 201811552526A CN 109528366 B CN109528366 B CN 109528366B
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- vertebral body
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- cord
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 18
- 239000007769 metal material Substances 0.000 claims 1
- 238000002513 implantation Methods 0.000 abstract description 7
- 241001079814 Symphyotrichum pilosum Species 0.000 abstract description 3
- 235000004224 Typha angustifolia Nutrition 0.000 abstract description 3
- 229920000742 Cotton Polymers 0.000 description 18
- 230000004308 accommodation Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000001356 surgical procedure Methods 0.000 description 6
- 238000010146 3D printing Methods 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 229910001069 Ti alloy Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 230000001575 pathological effect Effects 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 208000024891 symptom Diseases 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 206010034156 Pathological fracture Diseases 0.000 description 1
- 206010041549 Spinal cord compression Diseases 0.000 description 1
- 208000005250 Spontaneous Fractures Diseases 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 206010013990 dysuria Diseases 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 210000000278 spinal cord Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Classifications
-
- 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
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (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 relates to an anti-displacement vertebral body prosthesis, which comprises a vertebral body main body and at least one limiting rope, wherein the limiting rope is connected with the vertebral body main body and forms a U-shaped structure, and the limiting ropes positioned on two sides of the vertebral body main body are connected with connecting rods positioned on two sides above the vertebral body main body. The anti-displacement vertebral prosthesis has the advantages that the dislocation problem of the vertebral body main body is avoided after the anti-displacement vertebral prosthesis is implanted; the anti-displacement vertebral body prosthesis is connected with the nail rod system to form a whole, so that the fixation efficiency of vertebral body implantation is improved; simple operation, convenient use and high operation efficiency.
Description
Technical Field
The invention relates to the technical field of spine defect area reconstruction, in particular to an anti-displacement vertebral body prosthesis.
Background
In actual life, the bone of the vertebral body of the vertebral column of a patient is seriously damaged due to infection, trauma or tumor, and the spinal cord of the patient with pathological fracture of the vertebral body can be seriously pressed, so that the symptoms such as serious paralysis of lower limbs, dysuria and the like are caused, the pathological vertebral body of the patient is usually required to be excised through surgery for surgical treatment of the patient, and a vertebral body prosthesis (usually a titanium net, an artificial vertebral body or an existing emerging 3D printing artificial vertebral body) is used for reconstructing a vertebral column defect area after the pathological vertebral body excision in the surgery.
After implantation of the vertebral body prosthesis, the conventional vertebral body prosthesis may be displaced during long term use, for example, after the patient is vertically walked after being recovered after operation, the vertebral body prosthesis is displaced forward due to gravity, spinal stress or external force, that is, from the rear edge of the vertebral body to the front edge of the vertebral body, and the serious cases may occur that the vertebral body prosthesis is completely dislocated forward. After the vertebral body prosthesis is displaced, the stability of the vertebral column is reduced, the vertebral column is instable, the physiological curvature of the vertebral column is changed, even serious spinal cord compression is repeated, the postoperative symptoms are repeated again, the serious patient needs to be repaired by secondary operation, the postoperative recovery time and the treatment cost of the patient are increased, the life quality of the patient is reduced, and the serious condition often occurs in the segments with larger physiological curvature of the vertebral column, such as the titanium mesh after the lumbar 4 and lumbar 5 vertebral body is excised or the patient with artificial vertebral body reconstruction.
Therefore, there is a need for a vertebral prosthesis that avoids the displacement of the vertebral prosthesis during long term use, secures the vertebral prosthesis, and reduces the probability of secondary surgery.
Disclosure of Invention
The invention aims at overcoming the defects in the prior art and provides an anti-displacement vertebral body prosthesis.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides an anti-displacement centrum prosthesis, includes centrum main part and at least one spacing cotton rope, spacing cotton rope with centrum main part is connected and forms "U" shape structure, is located centrum main part both sides spacing cotton rope with be located the connective bar of the top both sides of centrum main part is connected.
Preferably, the limit cord is an integral cord.
Preferably, the cone body comprises at least one limit groove, the limit groove is positioned at the bottom side of the cone body, and the limit rope is embedded into the limit groove.
Preferably, the spacing cotton rope is split type cotton rope, spacing cotton rope includes first cotton rope and second cotton rope, first cotton rope with the second cotton rope symmetry respectively sets up the both sides of centrum main part, first end of first cotton rope with one side of centrum main part is connected, the first end of second cotton rope with the opposite side of centrum main part is connected.
Preferably, the first cord comprises a first positioning device disposed at a second end of the first cord;
the second cord includes a second positioning device disposed at a second end of the second cord.
Preferably, the vertebral body main body comprises at least one first connecting device and at least one second connecting device, the first connecting device and the second connecting device are symmetrically arranged at two sides of the vertebral body main body respectively, a first end of the first wire rope is connected with the first connecting device, and a second end of the second wire rope is connected with the second connecting device.
Preferably, the vertebral body main body comprises at least one first accommodating groove and at least one second accommodating groove, and the first accommodating groove and the second accommodating groove are respectively and symmetrically arranged at two sides of the vertebral body main body;
the first end of the first rope is arranged in the first accommodating groove, and the second end of the first rope is arranged outside the first accommodating groove;
the first end of the second rope is arranged in the second accommodating groove, and the second end of the second rope is arranged outside the second accommodating groove.
Preferably, the first accommodating groove comprises a first fixed base and a first through hole, the first fixed base is arranged in the first accommodating groove, the first fixed base is connected with the first end of the first rope, the first through hole is arranged at the outer side of the first accommodating groove, and the second end of the first rope passes through the first through hole and is positioned outside the first accommodating groove;
the second holding groove includes second fixed base and second through-hole, second fixed base sets up in the second holding groove, second fixed base with the second end of second cotton rope is connected, the second through-hole sets up the outside of second holding groove, the second end of second cotton rope passes the second through-hole is located outside the second holding groove.
Preferably, the first rope includes a first anti-back device, the first anti-back device is disposed at the second end of the first rope, and the first anti-back device is located outside the first through hole, so that the second end of the first rope does not enter the first accommodating groove;
the second rope comprises a second anti-return device, the second anti-return device is arranged at the second end of the second rope, and the second anti-return device is positioned at the outer side of the second through hole, so that the second end of the second rope does not enter the second accommodating groove.
Preferably, the spacing cord is made of a metal or metal alloy material.
Preferably, the limit cord is made of titanium alloy material.
Compared with the prior art, the invention has the following technical effects:
the displacement-preventing vertebral body prosthesis provided by the invention has the advantages that the dislocation of the vertebral body main body is avoided after the displacement-preventing vertebral body prosthesis is implanted; the anti-displacement vertebral body prosthesis is connected with the nail rod system to form a whole, so that the fixation efficiency of vertebral body implantation is improved; simple operation, convenient use and high operation efficiency.
Drawings
FIG. 1 is a schematic diagram of an exemplary embodiment of the present invention.
Fig. 2 is a schematic view of a vertebral body according to an exemplary embodiment of the present invention.
Fig. 3 is a schematic diagram of a preferred embodiment of the present invention.
Fig. 4 is a schematic diagram of a preferred embodiment of the present invention.
Fig. 5 is a schematic illustration of the connection of the first cord to the first attachment device in accordance with a preferred embodiment of the present invention.
Fig. 6 is a schematic illustration of the connection of a second cord to a second attachment device in accordance with a preferred embodiment of the present invention.
Fig. 7 is a schematic diagram of a preferred embodiment of the present invention.
Fig. 8 is a schematic view of the connection of the first cord to the first receiving groove in accordance with a preferred embodiment of the present invention.
Fig. 9 is a schematic diagram of the connection of a second cord to a second receiving groove in accordance with a preferred embodiment of the present invention.
Fig. 10 is a schematic diagram of a preferred embodiment of the present invention.
Fig. 11 is a schematic diagram of a preferred embodiment of the present invention.
Fig. 12 is a schematic diagram of a preferred embodiment of the present invention.
Fig. 13 is a schematic diagram of a preferred embodiment of the present invention.
Wherein the reference numerals are as follows: a vertebral body main body 1; a limit rope 2; a connecting rod 3; a vertebral sub-body 4; a locking device 5; a connecting device 6 on the vertebral body; an inferior vertebral body connecting device 7; a limit groove 11; first connecting means 12; a second connection means 13; a first accommodation groove 14; a second accommodation groove 15; a first fixed base 16; a first through hole 17; a second fixed base 18; a second through hole 19; a first cord 21; a second cord 22; a first positioning device 23; a second positioning device 24; a first anti-back device 25; a second anti-recoil device 26.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The invention is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
Example 1
The present embodiment is an exemplary embodiment of the present invention, as shown in fig. 1, an anti-displacement vertebral body prosthesis, which includes a vertebral body main body 1 and a limiting string 2, wherein the limiting string 2 is connected with the vertebral body main body 1 to form a "U" structure, and two ends of the limiting string 2 are respectively connected with connecting rods 3 located above two sides of the vertebral body main body 1 to fix the vertebral body main body 1, so as to prevent the dislocation of the vertebral body main body 1.
Further, the vertebral body 1 may be a one-piece vertebral body, may be an expandable length vertebral body, or may be a detachably assembled vertebral body.
Further, the vertebral body 1 may be a conventional general vertebral body or a specially customized vertebral body by 3D printing.
In this embodiment, a 3D printing is used to describe a specially tailored one-piece vertebral body.
Further, the cone body 1 is made of titanium alloy material.
As shown in fig. 2, the bottom of the vertebral body main body 1 is provided with a limit groove 11, and when in use, the limit wire rope 2 is embedded into the limit groove 11 to prevent the limit wire rope 2 from moving in the axial direction of the vertebral body main body 1.
Further, the stopper cord 2 is an integral cord.
Further, the stopper thread 2 is made of a metal or metal alloy material. In this embodiment, the stopper wire 2 is made of a titanium alloy material.
On the basis of the above technical solution, further, the vertebral body main body 1 may be provided with a plurality of limiting grooves 11, and the limiting grooves 11 are disposed at certain intervals along the axial direction of the vertebral body main body 1. Correspondingly, the limit cords 2 are multiple, and the number of the limit cords 2 is smaller than or equal to the number of the limit grooves 11.
In one exemplary embodiment, as shown in fig. 3, the vertebral body main body 1 is provided with two limiting grooves 11 (not shown in the figure), two limiting ropes 2 are provided, and the limiting ropes 2 are in one-to-one correspondence with the limiting grooves 11.
The application method of the embodiment is as follows: implanting the vertebral body main body 1 to a spinal operation position, and after fixing, passing the first end of the limiting rope 2 through a limiting groove 11 at the bottom of the vertebral body main body 1; after the first end of the limiting rope 2 is exposed from the right side of the vertebral body main body 1, the first end of the limiting rope 2 is connected with the connecting rod 3 above the right side of the vertebral body main body 1, the second end of the limiting rope 2 is connected with the connecting rod 3 above the left side of the vertebral body main body 1, and then the redundant limiting rope 2 is sheared off, so that implantation of the displacement-preventing vertebral body prosthesis can be completed.
The invention has the advantages that after the vertebral body is implanted, the problem of dislocation of the vertebral body is prevented; the vertebral body is connected with the nail rod system to form a whole, so that the fixation efficiency of the vertebral body implantation is improved; simple operation, convenient use and high operation efficiency.
Example 2
The present embodiment is a preferred embodiment of the present invention, as shown in fig. 4, an anti-displacement vertebral body prosthesis, which comprises a vertebral body main body 1 and a limiting rope 2, wherein the limiting rope 2 is connected with the vertebral body main body 1 to form a "U" structure, and two ends of the limiting rope 2 are respectively connected with connecting rods 3 positioned above two sides of the vertebral body main body 1 to fix, so as to prevent the dislocation of the vertebral body main body 1.
In this embodiment, the 3D printing is also used to describe a specially tailored one-piece vertebral body.
As shown in fig. 5 to 6, the limiting cord 2 is a split cord, and includes a first cord 21 and a second cord 22, where a first end of the first cord 21 is connected with one side of the vertebral body main body 1, a first end of the second cord 22 is connected with the other side of the vertebral body main body 1, and the first cord 21 and the second cord 22 are symmetrically arranged.
At the second end of the first cord 21, a first positioning device 23 is provided, the first positioning device 23 being adapted to rapidly position the second end of the first cord 21.
A second positioning device 24 is provided at the second end of the second cord 22, the second positioning device 24 being adapted to rapidly position the second end of the second cord 22.
Further, the first positioning device 23 has a size larger than the first cord 21, and the second positioning device 24 has a size larger than the second cord 22.
Further, the first positioning device 23 and the second positioning device 24 may have a spherical shape, a rod shape, or a disc shape.
The two sides of the vertebral body main body 1 are symmetrically provided with a first connecting device 12 and a second connecting device 13, the first connecting device 12 is connected with a first rope 21, the second connecting device 13 is connected with a second rope 22, the first connecting device 12 is connected with the first rope 21 in an integrated manner, and the second connecting device 13 is connected with the second rope 22 in an integrated manner.
When not in use, as shown in fig. 5 to 6 (fig. 5 to 6 are perspective views), the first cord 21 is wound around the first connecting device 12 to form a spring-like structure, thereby reducing the volume occupied by the first cord 21. The second cord 22 is wound around the second connecting device 13 to form a spring-like structure, thereby reducing the volume occupied by the second cord 22.
In use, the second end of the first cord 21 is quickly positioned by the first positioning device 23, and then the first cord 21 is pulled out to make the first cord 21 in a stretched and straightened state. Similarly, the second end of the second cord 22 is quickly positioned by the second positioning device 24, and then the second cord 22 is pulled out to make the second cord 22 in a stretched and straightened state.
On the basis of the above technical solution, further, the vertebral body main body 1 may be provided with a plurality of groups of first connecting devices 12 and second connecting devices 13, the plurality of first connecting devices 12 are arranged on one side of the vertebral body main body 1 along the axial direction of the vertebral body main body 1 at intervals, the plurality of second connecting devices 13 are arranged on the other side of the vertebral body main body 1 along the axial direction of the vertebral body main body 1 at intervals, one first connecting device 12 and one second connecting device 13 are correspondingly arranged, and the number of the first connecting devices 12 is the same as the number of the second connecting devices 13.
Correspondingly, there are a plurality of first cords 21 and second cords 22, and the number of first cords 21 is the same as the number of first connecting devices 12, and the number of second cords 22 is the same as the number of second connecting devices 13.
When in use, the vertebral body main body 1 with the proper quantity of the limiting ropes 2 is selected according to the operation requirement.
The application method of the embodiment is as follows: after the vertebral body main body 1 is implanted to a spinal surgery position for fixation, the second end of the first rope 21 is quickly positioned by the first positioning device 23, then the first rope 21 is pulled out, the first rope 21 is in a stretched and straightened state, and then the first rope 21 is connected with the connecting rod 3 on the same side; the second end of the second wire rope 22 is quickly positioned by using the second positioning device 24, then the second wire rope 22 is pulled out, the second wire rope 22 is in a stretched and straightened state, and then the second wire rope 22 is connected with the connecting rod 3 at the same side; and then cutting off the redundant first thread rope 21 and the redundant second thread rope 22 respectively, thus completing the implantation of the anti-displacement vertebral prosthesis.
The embodiment has the advantages that the limit cord and the vertebral body main body are integrally designed, so that the limit cord does not need to be measured in operation and complicated operation (namely, the limit cord passes through the bottom of the vertebral body); the positioning device is utilized to rapidly position the head end of the rope, so that the time for searching the head end of the rope is reduced; the cotton rope is spring-like winding design, can significantly reduce the cotton rope volume.
Example 3
The present embodiment is a preferred embodiment of the present invention, as shown in fig. 7, an anti-displacement vertebral body prosthesis, which comprises a vertebral body main body 1 and a limiting rope 2, wherein the limiting rope 2 is connected with the vertebral body main body 1 to form a "U" structure, and two ends of the limiting rope 2 are respectively connected with connecting rods 3 positioned above two sides of the vertebral body main body 1 to fix, so as to prevent the dislocation of the vertebral body main body 1.
In this embodiment, the 3D printing is also used to describe a specially tailored one-piece vertebral body.
As shown in fig. 8 to 9, the limiting cord 2 is a split cord, and includes a first cord 21 and a second cord 22, where a first end of the first cord 21 is connected with one side of the vertebral body main body 1, a first end of the second cord 22 is connected with the other side of the vertebral body main body 1, and the first cord 21 and the second cord 22 are symmetrically arranged.
At the second end of the first cord 21, a first positioning device 23 is provided, the first positioning device 23 being adapted to rapidly position the second end of the first cord 21.
A second positioning device 24 is provided at the second end of the second cord 22, the second positioning device 24 being adapted to rapidly position the second end of the second cord 22.
The two sides of the vertebral body main body 1 are symmetrically provided with a first accommodating groove 14 and a second accommodating groove 15, a first wire rope 21 is arranged in the first accommodating groove 14, and a second wire rope 22 is arranged in the second accommodating groove 15.
The first receiving groove 14 is provided in the inside of one side of the vertebral body main body 1, the first receiving groove 14 includes a first fixing base 16 and a first through hole 17, the first fixing base 16 is provided in the first receiving groove 14, the first through hole 17 is provided outside the first receiving groove 14, and the first through hole 17 penetrates one side of the vertebral body main body 1, so that the first receiving groove 14 communicates with the outside.
The second accommodation groove 15 is arranged in the other side of the cone body 1, the second accommodation groove 15 and the first accommodation groove 14 are symmetrically arranged, the second accommodation groove 15 comprises a second fixing base 18 and a second through hole 19, the second fixing base 18 is arranged in the second accommodation groove 15, the second through hole 19 is arranged on the outer side of the second accommodation groove 15, and the second through hole penetrates through the other side of the cone body 1, so that the second accommodation groove 15 is communicated with the outside.
The first end of the first cord 21 is connected to the first fixing base 16 and integrally connected, and a first positioning device 23 and a first anti-return device 25 are sequentially disposed at the second end of the first cord 21, wherein the first anti-return device 25 and the first positioning device 23 are both located outside the first through hole 17.
The inner diameter of the first throughbore 17 is larger than the outer diameter of the first cord 21 and the first anti-recoil device 25 is sized larger than the inner diameter of the first throughbore 17 to prevent the first anti-recoil device 25 from entering the first receiving slot 14.
The first positioning means 23 have a size greater than or equal to the size of the first anti-back-off means 25.
The first end of the second cord 22 is connected with the second fixing base 17 and is integrally connected, and a second positioning device 24 and a second anti-return device 26 are sequentially arranged at the second end of the second cord 22, wherein the second anti-return device 26 and the second positioning device 24 are both positioned outside the second through hole 19.
The second throughbore 19 has an inner diameter greater than the outer diameter of the second cord 22 and the second anti-recoil device 26 is sized larger than the inner diameter of the second throughbore 19 to prevent the second anti-recoil device 26 from entering the second receiving slot 15.
The second positioning device 24 has a size greater than or equal to the size of the second anti-backup device 26.
Further, the first and second retraction preventing devices 25 and 26 may have a ball shape, a disc shape, a rod shape, etc., and may be capable of locking the first and second through holes 17 and 19, thereby preventing the second end of the first wire 21 from entering the first accommodating groove 14 and the second end of the second wire 22 from entering the second accommodating groove 15.
Further, the first positioning device 23 and the second positioning device 24 may have a spherical shape, a rod shape, or a disc shape.
Further, only one of the first positioning device 23 and the first retraction preventing device 25 can be reserved, so that the positioning function and the retraction preventing function can be realized, and meanwhile, the volume of the first rope 21 is reduced, and the manufacturing cost of materials is reduced.
Further, only one of the second positioning device 24 and the second anti-return device 26 can be reserved, so that the positioning function and the anti-return function can be realized, and meanwhile, the volume of the second rope 22 is reduced, and the manufacturing cost of materials is reduced.
When not in use, as shown in fig. 8-9 (fig. 8-9 are perspective views in partial cross-section), the first cord 21 is wound and disposed within the first receiving groove 14 to form a spring-like structure, thereby reducing the volume occupied by the first cord 21. The second cord 22 is wound in the second accommodating groove 15 to form a spring-like structure, so that the volume occupied by the second cord 22 is reduced.
In use, the second end of the first cord 21 is quickly positioned by the first positioning device 23, and then the first cord 21 is pulled out of the first accommodating groove 14, so that the first cord 21 is in a stretched and straightened state. Similarly, the second end of the second cord 22 is quickly positioned by the second positioning device 24, and then the second cord 22 is pulled out of the second accommodating groove 15, so that the second cord 22 is in a stretched and straightened state.
On the basis of the above technical solution, further, the cone body 1 may be provided with a plurality of groups of first accommodating grooves 14 and second accommodating grooves 15, the plurality of first accommodating grooves 14 are arranged on one side of the cone body 1 along the axial direction of the cone body 1 at intervals, the plurality of second accommodating grooves 15 are arranged on the other side of the cone body 1 along the axial direction of the cone body 1 at intervals, one first accommodating groove 14 and one second accommodating groove 15 are correspondingly arranged, and the number of the first accommodating grooves 14 is the same as the number of the second accommodating grooves 15.
Correspondingly, there are a plurality of first cords 21 and second cords 22, and the number of first cords 21 is the same as the number of first accommodating grooves 14, and the number of second cords 22 is the same as the number of second accommodating grooves 15.
When in use, the vertebral body main body 1 with the proper quantity of the limiting ropes 2 is selected according to the operation requirement.
The application method of the embodiment is as follows: after the vertebral body main body 1 is implanted to a spinal surgery position for fixation, the second end of the first rope 21 is quickly positioned by the first positioning device 23, then the first rope 21 is pulled out of the first accommodating groove 14, the first rope 21 is in a stretched and straightened state, and then the first rope 21 is connected with the connecting rod 3 at the same side; the second end of the second wire rope 22 is quickly positioned by the second positioning device 24, then the second wire rope 22 is pulled out of the second accommodating groove 15, the second wire rope 22 is in a stretched and straightened state, and then the second wire rope 22 is connected with the connecting rod 3 at the same side; and then cutting off the redundant first thread rope 21 and the redundant second thread rope 22 respectively, thus completing the implantation of the anti-displacement vertebral prosthesis.
The advantage of this embodiment lies in, is favorable to setting up the holding tank in centrum both sides, makes spacing cotton rope winding accomodate in the holding tank, is hidden design, further reduces spacing cotton rope's occupation volume.
Example 4
This embodiment is a preferred embodiment of the present invention, which is substantially the same as embodiment 1, except that: the vertebral body main body 1 is a vertebral body with adjustable length.
As shown in fig. 10, the vertebral body main body 1 is in nested sliding connection with the vertebral body auxiliary body 4, a groove (not shown in the figure) is formed at a first end of the vertebral body main body 1, a second end of the vertebral body auxiliary body 4 is nested in the groove of the vertebral body main body 1, and the second end of the vertebral body auxiliary body 4 reciprocates in the groove along the axial direction of the vertebral body main body 1.
The first end of the vertebral body 1 is provided on one side with a locking means 5 and the second end of the vertebral body 4 is provided on one side with a locking groove (not shown in the figures). After the auxiliary vertebral body 4 moves to a certain specific position, the locking device 5 is connected with the locking groove to limit the position of the auxiliary vertebral body 4, so that the auxiliary vertebral body 4 does not move any more.
At least one limiting groove 11 is provided at the bottom side of the vertebral body main body 1.
Further, a limit groove 11 may be provided on the bottom side of the vertebral body sub-body 4.
The method of use of this embodiment is substantially the same as that of embodiment 1, and will not be described in detail here.
Example 5
This embodiment is a preferred embodiment of the present invention, which is substantially the same as embodiment 2, except that: the vertebral body main body 1 is a vertebral body with adjustable length.
As shown in fig. 11, the vertebral body main body 1 is in nested sliding connection with the vertebral body auxiliary body 4, a groove (not shown in the figure) is formed at a first end of the vertebral body main body 1, a second end of the vertebral body auxiliary body 4 is nested in the groove of the vertebral body main body 1, and the second end of the vertebral body auxiliary body 4 reciprocates in the groove along the axial direction of the vertebral body main body 1.
The first end of the vertebral body 1 is provided on one side with a locking means 5 and the second end of the vertebral body 4 is provided on one side with a locking groove (not shown in the figures). After the auxiliary vertebral body 4 moves to a certain specific position, the locking device 5 is connected with the locking groove to limit the position of the auxiliary vertebral body 4, so that the auxiliary vertebral body 4 does not move any more.
At least one first connecting device 12 and one second connecting device 13 are symmetrically arranged on both sides of the vertebral body main body 1.
On both sides of the vertebral body sub-body 4, the first connection means 12 and the second connection means 13 are not provided.
The method of use of this embodiment is substantially the same as that of embodiment 2, and will not be described in detail here.
Example 6
This embodiment is a preferred embodiment of the present invention, which is substantially the same as embodiment 3, except that: the vertebral body main body 1 is a detachable assembled vertebral body.
As shown in fig. 12, the first end of the vertebral body main body 1 is detachably connected with the upper vertebral body connecting device 6, and the second end of the vertebral body main body 1 is detachably connected with the lower vertebral body connecting device 7.
Further, the removable connection includes, but is not limited to, a nested connection, a bolted connection.
At least one first receiving groove 14 and at least one second receiving groove 15 are symmetrically provided at both sides of the vertebral body main body 1.
Further, the connecting device 6 on the vertebral body is symmetrically provided with at least one first receiving groove 14 and at least one second receiving groove 15 on both sides.
Further, the connecting device 7 on the vertebral body is symmetrically provided with at least one first receiving groove 14 and at least one second receiving groove 15 on both sides.
In particular, the vertebral body 1 must be provided with a first receiving groove 14 and a second receiving groove 15, and for the upper vertebral body connecting means 6 and the lower vertebral body connecting means 7, the upper vertebral body connecting means 6 and/or the lower vertebral body connecting means 7 provided with the first receiving groove 14 and the second receiving groove 15 may be selected according to the surgical needs.
As shown in fig. 13, the vertebral body main body 1, the upper vertebral body connecting device 6 and the lower vertebral body connecting device 7 are provided with a first accommodating groove 14 and a second accommodating groove 15, so that the vertebral body main body 1, the upper vertebral body connecting device 6 and the lower vertebral body connecting device 7 are respectively connected with the connecting rod 3 through the limiting ropes 2 to strengthen the fixing effect.
The method of use of this embodiment is substantially the same as that of embodiment 3, and will not be described in detail here.
The foregoing description is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present invention, and are intended to be included within the scope of the present invention.
Claims (5)
1. The anti-displacement vertebral body prosthesis is characterized by comprising a vertebral body main body (1) and at least one limiting rope (2), wherein the limiting rope (2) is connected with the vertebral body main body (1) and forms a U-shaped structure, and the limiting ropes (2) positioned at two sides of the vertebral body main body (1) are connected with connecting rods (3) positioned at two sides above the vertebral body main body (1);
the limiting wire rope (2) is a split wire rope, the limiting wire rope (2) comprises a first wire rope (21) and a second wire rope (22), the first wire rope (21) and the second wire rope (22) are symmetrically arranged on two sides of the vertebral body main body (1) respectively, a first end of the first wire rope (21) is connected with one side of the vertebral body main body (1), and a first end of the second wire rope (22) is connected with the other side of the vertebral body main body (1);
the vertebral body main body (1) comprises at least one first accommodating groove (14) and at least one second accommodating groove (15), and the first accommodating groove (14) and the second accommodating groove (15) are symmetrically arranged on two sides of the vertebral body main body (1) respectively;
a first end of the first rope (21) is arranged in the first accommodating groove (14), and a second end of the first rope (21) is arranged outside the first accommodating groove (14);
the first end of the second rope (22) is arranged in the second accommodating groove (15), and the second end of the second rope (22) is arranged outside the second accommodating groove (15);
the first accommodating groove (14) comprises a first fixed base (16) and a first through hole (17), the first fixed base (16) is arranged in the first accommodating groove (14), the first fixed base (16) is connected with the first end of the first wire rope (21), the first through hole (17) is arranged at the outer side of the first accommodating groove (14), and the second end of the first wire rope (21) penetrates through the first through hole (17) and is positioned outside the first accommodating groove (14);
the second holding groove (15) comprises a second fixed base (18) and a second through hole (19), the second fixed base (18) is arranged in the second holding groove (15), the second fixed base (18) is connected with the second end of the second rope (22), the second through hole (19) is arranged on the outer side of the second holding groove (15), and the second end of the second rope (22) penetrates through the second through hole (19) and is located outside the second holding groove (15).
2. The anti-displacement vertebral body prosthesis according to claim 1, wherein the first string (21) comprises a first positioning device (23), the first positioning device (23) being arranged at a second end of the first string (21);
the second cord (22) comprises a second positioning device (24), the second positioning device (24) being arranged at a second end of the second cord (22).
3. The anti-displacement vertebral body prosthesis according to claim 1, characterized in that the vertebral body (1) comprises at least one first connecting means (12) and at least one second connecting means (13), said first connecting means (12) and said second connecting means (13) being respectively arranged symmetrically on both sides of the vertebral body (1), a first end of the first string (21) being connected to said first connecting means (12) and a second end of the second string (22) being connected to said second connecting means (13).
4. The displacement-preventing vertebral body prosthesis according to claim 1, wherein the first string (21) comprises a first anti-recoil device (25), the first anti-recoil device (25) being arranged at the second end of the first string (21), the first anti-recoil device (25) being located outside the first through hole (17) such that the second end of the first string (21) does not enter the first receiving groove (14);
the second rope (22) comprises a second anti-return device (26), the second anti-return device (26) is arranged at the second end of the second rope (22), and the second anti-return device (26) is arranged at the outer side of the second through hole (19) so that the second end of the second rope (22) does not enter the second accommodating groove (15).
5. The anti-displacement vertebral body prosthesis according to claim 1, characterized in that the limit strand (2) is made of a metallic material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811552526.5A CN109528366B (en) | 2018-12-19 | 2018-12-19 | Displacement-preventing vertebral body prosthesis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811552526.5A CN109528366B (en) | 2018-12-19 | 2018-12-19 | Displacement-preventing vertebral body prosthesis |
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| CN109528366B true CN109528366B (en) | 2024-03-26 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2360648C1 (en) * | 2008-02-18 | 2009-07-10 | Павел Антонович Савченко | Device for surgical treatment of backbone |
| KR101216212B1 (en) * | 2011-08-16 | 2012-12-28 | 강지훈 | Implant for spondylodesis and method of manufacturing thereof |
| CN209770593U (en) * | 2018-12-19 | 2019-12-13 | 中国人民解放军第二军医大学第二附属医院 | Novel anti-displacement vertebral prosthesis |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2889937B1 (en) * | 2005-08-26 | 2007-11-09 | Abbott Spine Sa | INTERVERTEBRAL IMPLANT FOR LOMBO-SACRED JOINT |
| US8163024B2 (en) * | 2005-09-14 | 2012-04-24 | Premia Spine Ltd. | Adjustable spinal prostheses |
| US8246655B2 (en) * | 2009-01-09 | 2012-08-21 | Pioneer Surgical Technology, Inc. | Intervertebral implant devices and methods for insertion thereof |
| GB0922614D0 (en) * | 2009-12-23 | 2010-02-10 | Butterfield Forbes | Device |
| US20110301644A1 (en) * | 2010-06-08 | 2011-12-08 | Zimmer Spine | Spinal stabilization system |
| WO2013149134A2 (en) * | 2012-03-30 | 2013-10-03 | Olympus Biotech Corporation | Alif spinal implant |
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2018
- 2018-12-19 CN CN201811552526.5A patent/CN109528366B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2360648C1 (en) * | 2008-02-18 | 2009-07-10 | Павел Антонович Савченко | Device for surgical treatment of backbone |
| KR101216212B1 (en) * | 2011-08-16 | 2012-12-28 | 강지훈 | Implant for spondylodesis and method of manufacturing thereof |
| CN209770593U (en) * | 2018-12-19 | 2019-12-13 | 中国人民解放军第二军医大学第二附属医院 | Novel anti-displacement vertebral prosthesis |
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