CN112370220A - Height-adjustable and rotatable vertebral prosthesis - Google Patents
Height-adjustable and rotatable vertebral prosthesis Download PDFInfo
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- CN112370220A CN112370220A CN202011126315.2A CN202011126315A CN112370220A CN 112370220 A CN112370220 A CN 112370220A CN 202011126315 A CN202011126315 A CN 202011126315A CN 112370220 A CN112370220 A CN 112370220A
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- section
- connecting plate
- shaped connecting
- telescopic
- nut
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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
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
Abstract
The invention discloses a height-adjustable and rotatable vertebral body prosthesis, which belongs to the technical field of medical instruments and comprises a first vertebral body and a second vertebral body, wherein the first vertebral body comprises a first telescopic section and a first fixing section, the second vertebral body comprises a second telescopic section and a second fixing section, one end of the first telescopic section is arranged in the first fixing section and can axially move relative to the first fixing section, one end of the second telescopic section is arranged in the second fixing section and can axially move relative to the second fixing section, and the first telescopic section and the second telescopic section are rotatably connected. The invention can lengthen or shorten the distance between the first telescopic section and the second telescopic section and the distance between the first fixed section and the second fixed section respectively according to the height of the truncated vertebra during the operation, thereby facilitating the operation.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a rotatable vertebral body prosthesis with adjustable height.
Background
At present, spinal fracture, tumor, infection and degenerative diseases are related to multiple spinal diseases, patients with serious diseases mainly adopt surgical treatment, vertebral prosthesis is implanted into the bodies of the patients, and the adjacent vertebral bodies can be supported by the vertebral prosthesis to restore the function of the spinal column and complete the repair of the spinal column. The height of the traditional vertebral body prosthesis is generally fixed, the vertebral body prosthesis can not be flexibly matched according to the height of a truncated vertebral body during operation, and the operation is very inconvenient.
Disclosure of Invention
The present invention is directed to a height adjustable, rotatable vertebral body prosthesis that solves one or more of the problems set forth in the prior art and provides at least one useful alternative or creation.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides an adjustable height, rotatable centrum prosthesis, includes first centrum and second centrum, first centrum includes first flexible section and first canned paragraph, the second centrum includes flexible section of second and second canned paragraph, the one end setting of first flexible section is in the inside of first canned paragraph, and can be for first canned paragraph axial displacement, the one end setting of the flexible section of second is in the inside of second canned paragraph, and can be for second canned paragraph axial displacement, first flexible section and the flexible section rotatable coupling of second.
As a further improvement of the technical scheme, the top of the first fixing section is rotatably connected with a first nut, the first nut is provided with a first internal thread, one end of the first telescopic section is provided with a first external thread matched with the first internal thread, and one end of the first telescopic section is meshed with the first nut.
As a further improvement of the technical scheme, the top of the second fixing section is rotatably connected with a second nut, the second nut is provided with a second internal thread, one end of the second telescopic section is provided with a second external thread matched with the second internal thread, and one end of the second telescopic section is meshed with the second nut.
As a further improvement of the technical scheme, the other end of the first telescopic section is provided with a first U-shaped connecting plate, the other end of the second telescopic section is provided with a second U-shaped connecting plate, the first U-shaped connecting plate is rotatably connected with the second U-shaped connecting plate, and one end of the joint of the first U-shaped connecting plate and the second U-shaped connecting plate is arc-shaped.
As a further improvement of the above technical scheme, the first U-shaped connecting plate is provided with a first positioning hole, the second U-shaped connecting plate is provided with a second positioning hole, the width of the first U-shaped connecting plate is slightly smaller than that of the second U-shaped connecting plate, the second U-shaped connecting plate is sleeved on the outer side of the first U-shaped connecting plate, and the first positioning hole corresponds to the second positioning hole and is connected with the second positioning hole in a matching manner through a bolt and a nut.
As a further improvement of the above technical solution, the first U-shaped connecting plate is further provided with a third positioning hole, the second U-shaped connecting plate is further provided with an arc-shaped hole, and the third positioning hole corresponds to the arc-shaped hole and is connected by a bolt and a nut in a matching manner.
As a further improvement of the above technical solution, the side surface of the first fixing section and the side surface of the second fixing section are both provided with a plurality of fusion through holes.
As a further improvement of the above technical solution, the bottom surface of the first fixing section and the bottom surface of the second fixing section are both provided with a porous structure.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the first telescopic section, the first fixed section, the second telescopic section and the second fixed section are arranged, one end of the first telescopic section is arranged in the first fixed section and can axially move relative to the first fixed section, one end of the second telescopic section is arranged in the second fixed section and can axially move relative to the second fixed section, so that the distances between the first telescopic section and the second telescopic section and the first fixed section and the distances between the second telescopic section and the second fixed section can be respectively lengthened or shortened according to the height of a cut vertebra during operation, the operation is conveniently completed, and meanwhile, the first telescopic section and the second telescopic section can be rotatably connected, so that a patient can also bend after the operation.
Drawings
The invention is further described below with reference to the accompanying drawings and examples.
FIG. 1 is a front view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is an elevation view of a first vertebral body prosthesis of the present invention;
fig. 4 is an elevation view of a second vertebral prosthesis of the present invention.
In the figure, 100-the first cone, 110-the first telescopic section, 111-the first U-shaped connecting plate, 1111-the first positioning hole, 1112-the third positioning hole, 120-the first fixing section, 121-the first nut, 200-the second cone, 210-the second telescopic section, 211-the second U-shaped connecting plate, 2111-the second positioning hole, 2112-the arc-shaped hole, 220-the second fixing section, 221-the second nut, and 300-the fusion through hole.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if words such as "a plurality" are described, the meaning is one or more, the meaning of a plurality is two or more, more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1-4, in an embodiment of the present invention, a vertebral body prosthesis includes a first vertebral body 100 and a second vertebral body 200, the first vertebral body 100 includes a first telescopic section 110 and a first fixed section 120, the second vertebral body 200 includes a second telescopic section 210 and a second fixed section 220, one end of the first telescopic section 110 is disposed inside the first fixed section 120 and can move axially relative to the first fixed section 120, one end of the second telescopic section 210 is disposed inside the second fixed section 220 and can move axially relative to the second fixed section 220, and the first telescopic section 110 and the second telescopic section 210 are rotatably connected.
Referring to fig. 1, in some embodiments, a first nut 121 is rotatably connected to the top of the first fixed section 120, the first nut 121 is provided with a first internal thread, one end of the first telescopic section 110 is provided with a first external thread matching the first internal thread, and one end of the first telescopic section 110 is engaged with the first nut 121. Through upwards stretching first flexible section 110, first nut 121 can rotate, makes first flexible section 110 slowly take out from first fixed segment 120, and first flexible section 110 is connected with first fixed segment 120 all the time to make first centrum 100 lengthen, through pushing down first flexible section 110, first nut 121 can the direction rotation, makes first flexible section 110 slowly insert first fixed segment 120, thereby makes first centrum 100 shorten.
Referring to fig. 1, in some embodiments, a second nut 221 is rotatably connected to the top of the second fixed section 220, the second nut 221 is provided with a second internal thread, one end of the second telescopic section 210 is provided with a second external thread matching the second internal thread, and one end of the second telescopic section 210 is engaged with the second nut 221. Through stretching the second flexible section 210 downwards, second nut 221 can rotate, makes the second flexible section 210 slowly take out from the second fixed section 220, and the second flexible section 210 is connected with the second fixed section 220 all the time to make the second centrum 200 grow, through upwards pressing the second flexible section 210, second nut 221 can rotate in the direction, makes the second flexible section 210 slowly insert into the second fixed section 220, thereby makes the second centrum 200 shorten.
In some embodiments, a first U-shaped connecting plate 111 is disposed at the other end of the first telescopic segment 110, a second U-shaped connecting plate 211 is disposed at the other end of the second telescopic segment 210, the first U-shaped connecting plate 111 and the second U-shaped connecting plate 211 are rotatably connected, and one end of a connection between the first U-shaped connecting plate 111 and the second U-shaped connecting plate 211 is arc-shaped. First U type connecting plate 111 is the arc with the one end of second U type connecting plate 211 junction, compares other shapes such as square and rotates more nimble.
In some embodiments, the first U-shaped connecting plate 111 is provided with a first positioning hole 1111, the second U-shaped connecting plate 211 is provided with a second positioning hole 2111, the width of the first U-shaped connecting plate 111 is slightly smaller than that of the second U-shaped connecting plate 211, the second U-shaped connecting plate 211 is sleeved on the outer side of the first U-shaped connecting plate 111, and the first positioning hole 1111 corresponds to the second positioning hole 2111 and is connected with the second U-shaped connecting plate 211 through a bolt and a nut in a matching manner. The first U-shaped connecting plate 111 and the second U-shaped connecting plate 211 rotate with bolts as pivots. In other embodiments, the width of the first U-shaped connecting plate 111 may also be slightly greater than the width of the second U-shaped connecting plate 211, and the first U-shaped connecting plate 111 is sleeved outside the second U-shaped connecting plate 211.
In some embodiments, the first U-shaped connecting plate 111 further has a third positioning hole 1112, the second U-shaped connecting plate 211 further has an arc-shaped hole 2112, and the third positioning hole 1112 corresponds to the arc-shaped hole 2112 and is connected by a bolt and a nut. The arc-shaped holes 2112 are formed, so that the rotating angle between the first U-shaped connecting plate 111 and the second U-shaped connecting plate 211 is limited within the angle of the arc-shaped holes 2112, and the affected part is prevented from being influenced by overlarge rotating amplitude.
In some embodiments, the side of the first fixing segment 120 and the side of the second fixing segment 220 are each provided with a plurality of fusion through holes 300. The fusion through-hole 300 is a through-hole structure, which can be used for integrating the bone inside the vertebral prosthesis and the residual vertebral bone around the vertebral prosthesis.
In some embodiments, the bottom surface of the first fixing section 120 and the bottom surface of the second fixing section 220 are provided with a porous structure. The porous structure is a bone-like trabecular structure, has an induction effect on bone ingrowth, and can enable human bone tissues to grow into the vertebral prosthesis, thereby realizing the fusion of the vertebral prosthesis.
During installation, the first fixing section 120, the second fixing section 220 and the lower section vertebra, the upper section vertebra passes through the fix with screw, according to the lower section vertebra, the first flexible section 110 of distance extension and the second flexible section 210 of upper section vertebra are stretched, make first U type connecting plate 111 and the butt joint of second U type connecting plate 211, and correspond with second locating hole 2111 through first locating hole 1111, connect through the cooperation of bolt and nut, third locating hole 1112 corresponds with arc hole 2112, connect through the cooperation of bolt and nut, thereby make first centrum 100 and second centrum 200 connect, accomplish the installation.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention as set forth in the claims appended hereto.
Claims (8)
1. The vertebral body prosthesis is characterized by comprising a first vertebral body and a second vertebral body, wherein the first vertebral body comprises a first telescopic section and a first fixing section, the second vertebral body comprises a second telescopic section and a second fixing section, one end of the first telescopic section is arranged in the first fixing section and can axially move relative to the first fixing section, one end of the second telescopic section is arranged in the second fixing section and can axially move relative to the second fixing section, and the first telescopic section is rotatably connected with the second telescopic section.
2. The vertebral prosthesis of claim 1 wherein a first nut is rotatably connected to the top of the first fixed segment, the first nut is provided with a first internal thread, one end of the first telescopic segment is provided with a first external thread matching the first internal thread, and one end of the first telescopic segment is engaged with the first nut.
3. The vertebral prosthesis of claim 1 wherein a second nut is rotatably connected to the top of the second fixed segment, the second nut is provided with a second internal thread, one end of the second telescopic segment is provided with a second external thread matching the second internal thread, and one end of the second telescopic segment is engaged with the second nut.
4. The vertebral prosthesis of claim 1, wherein a first U-shaped connecting plate is arranged at the other end of the first telescopic section, a second U-shaped connecting plate is arranged at the other end of the second telescopic section, the first U-shaped connecting plate and the second U-shaped connecting plate are rotatably connected, and one end of the joint of the first U-shaped connecting plate and the second U-shaped connecting plate is arc-shaped.
5. The vertebral prosthesis of claim 4, wherein the first U-shaped connecting plate is provided with a first positioning hole, the second U-shaped connecting plate is provided with a second positioning hole, the width of the first U-shaped connecting plate is slightly smaller than that of the second U-shaped connecting plate, the second U-shaped connecting plate is sleeved on the outer side of the first U-shaped connecting plate, and the first positioning hole corresponds to the second positioning hole and is connected with the second positioning hole in a matching manner through a bolt and a nut.
6. The vertebral prosthesis of claim 5, wherein the first U-shaped connecting plate is further provided with a third positioning hole, the second U-shaped connecting plate is further provided with an arc-shaped hole, and the third positioning hole corresponds to the arc-shaped hole and is connected with the arc-shaped hole in a matching manner through a bolt and a nut.
7. The vertebral prosthesis of claim 1 wherein the lateral surface of the first fixation segment and the lateral surface of the second fixation segment are each provided with a plurality of fusion through-holes.
8. The vertebral prosthesis of claim 1 wherein the bottom surface of the first fixation segment and the bottom surface of the second fixation segment are each provided with a porous structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011126315.2A CN112370220B (en) | 2020-10-20 | 2020-10-20 | Height-adjustable and rotatable vertebral prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011126315.2A CN112370220B (en) | 2020-10-20 | 2020-10-20 | Height-adjustable and rotatable vertebral prosthesis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112370220A true CN112370220A (en) | 2021-02-19 |
| CN112370220B CN112370220B (en) | 2022-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011126315.2A Active CN112370220B (en) | 2020-10-20 | 2020-10-20 | Height-adjustable and rotatable vertebral prosthesis |
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| Country | Link |
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| CN (1) | CN112370220B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5665122A (en) * | 1995-01-31 | 1997-09-09 | Kambin; Parviz | Expandable intervertebral cage and surgical method |
| US20060074490A1 (en) * | 2004-10-01 | 2006-04-06 | Sweeney Patrick J | Vertebral prosthesis and spinal fixation system |
| CN203710189U (en) * | 2014-03-05 | 2014-07-16 | 浙江科惠医疗器械有限公司 | Artificial vertebral body adjustable in angle and retractable in height |
| WO2017119862A1 (en) * | 2016-01-04 | 2017-07-13 | Алексей Сергеевич НЕХЛОПОЧИН | "las-3" expandable vertebral body replacement and method of implanting same |
| CN110840636A (en) * | 2019-11-20 | 2020-02-28 | 北京爱康宜诚医疗器材有限公司 | Vertebral body prosthesis |
-
2020
- 2020-10-20 CN CN202011126315.2A patent/CN112370220B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5665122A (en) * | 1995-01-31 | 1997-09-09 | Kambin; Parviz | Expandable intervertebral cage and surgical method |
| US20060074490A1 (en) * | 2004-10-01 | 2006-04-06 | Sweeney Patrick J | Vertebral prosthesis and spinal fixation system |
| CN203710189U (en) * | 2014-03-05 | 2014-07-16 | 浙江科惠医疗器械有限公司 | Artificial vertebral body adjustable in angle and retractable in height |
| WO2017119862A1 (en) * | 2016-01-04 | 2017-07-13 | Алексей Сергеевич НЕХЛОПОЧИН | "las-3" expandable vertebral body replacement and method of implanting same |
| CN110840636A (en) * | 2019-11-20 | 2020-02-28 | 北京爱康宜诚医疗器材有限公司 | Vertebral body prosthesis |
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| Publication number | Publication date |
|---|---|
| CN112370220B (en) | 2022-10-21 |
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