CN209285844U - Artificial dentata - Google Patents
Artificial dentata Download PDFInfo
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- CN209285844U CN209285844U CN201821836121.XU CN201821836121U CN209285844U CN 209285844 U CN209285844 U CN 209285844U CN 201821836121 U CN201821836121 U CN 201821836121U CN 209285844 U CN209285844 U CN 209285844U
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- hypocentrum
- dentata
- upper centrum
- artificial
- bulb
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Abstract
The utility model provides a kind of artificial dentata, comprising: upper centrum, upper centrum with atlas and axis for connecting；Hypocentrum is movably connect with upper centrum, and hypocentrum with Cervical vertebra for connecting.Since hypocentrum is movably connect with upper centrum, after being implanted into the artificial dentata, aloows atlas and axis with respect to Cervical vertebra activity, guarantee the mobility of articulatio atlantoepistrophica.
Description
Technical field
The utility model relates to the field of medical instrument technology, in particular to a kind of artificial dentata.
Background technique
Human body upper cervical spine is the one or two cervical vertebra, i.e. atlas and axis.Atlas and axis is different from Cervical vertebra structure, no intervertebral disc structure,
Be made of three joints and a plurality of ligament, i.e., dentoid process of axis and atlas and axis anterior arch posterior condylar face and atlas and axis transverse ligament,
The center joint of alar ligament composition, two level of approximation that the atlas and axis inferior articular surface and dentata superior articular surface of two sides are constituted are omited
It is formed with inclined articular surface.It is class axle shape that extensive region tooth, which hits exactly joint, cooperates jointly with the Lateral mass joint of both sides and completes atlas and axis
Between multidirectional activity: main rotary motion and a small amount of lateroflexion and anterior flexion and rear stretching movement.
Upper cervical spine operation is one of difficult point of field of spinal surgery, and that structure is complicated is changeable for the regional anatomic, adjoins important mind
Through, blood vessel, operating time is long, needs to have an X-rayed repeatedly in art, high to surgeon's clinical technology and skill requirement.
Currently, involving the tuberculosis of upper cervical spine, tumour etc. usually seriously destroys the important feature of atlas and axis, and spinal cord is oppressed,
And then cause the serious consequence of paralysis.This kind of patient, which needs to perform the operation, cuts off lesion, and the structure of destruction is rebuild and fixed,
To maintain the structural integrity and stabilization of cranio-cervical junction, normal physiological function is safeguarded.
In traditional operation, it is implanted in articulatio atlantoepistrophica using standard prosthese such as titanium net, only can satisfy certain support
Function, postoperative success rate is lower, because it can not be consistent with original anatomic form of patient, and easily cause and collapse, be broken etc.
Problem；It is popularized recently as 3D printing technique what backbone and upper cervical spine were applied, artificial customization centrum is gradually used in
In the valve replacement of dentata, but existing 3D printing prosthese is mostly integrally formed, and postoperative Atlanto-axial joint merges completely, not complete
The full physiological function for restoring patient's lesion region, can not restore the mobility of articulatio atlantoepistrophica, and the time easily causes dysfunction for a long time,
The problems such as prosthese fatigue fracture.
Utility model content
The utility model provides a kind of artificial dentata, living using the articulatio atlantoepistrophica of Using prosthesis in the prior art to solve
The problem of dynamic degree difference.
To solve the above-mentioned problems, the utility model provides a kind of artificial dentata, comprising: upper centrum, upper centrum are used for
It is connect with atlas and axis；Hypocentrum is movably connect with upper centrum, and hypocentrum with Cervical vertebra for connecting.
Further, upper centrum has arc groove, and hypocentrum has arc convex, and arc convex is rotatably arranged in arc
In shape slot.
Further, arc groove is half ball-and-socket, and hypocentrum includes main body and the bulb that protrusion is arranged in main body, and main body is used
It is connect in Cervical vertebra, bulb-type camber protrusion, bulb is at least partially disposed in half ball-and-socket, and bulb can be in half ball-and-socket
Middle rotation.
Further, hypocentrum further includes connecting column, and the both ends of connecting column are connect with main body and bulb respectively.
Further, artificial dentata further include: locating part, locating part are used to arc convex being limited to upper centrum, with
Prevent arc convex from deviating from from arc groove.
Further, upper centrum further includes cylindrical hole, and cylindrical hole is connected to arc groove, has card on the side wall of cylindrical hole
Slot, locating part and card slot are clamped, and locating part has confined planes, confined planes and arc convex counter stopper.
Further, confined planes are arcwall face, the surface matching of arcwall face and arc convex.
Further, card slot is annular groove, and locating part is snap ring, and the internal diameter of snap ring is less than the diameter of cylindrical hole, snap ring
It is circumferential that there is notch.
Further, upper centrum has first through hole, and first through hole is for wearing fastener to connect with atlas and axis；With/
Or, hypocentrum has the second through-hole, the second through-hole is for wearing fastener to connect with Cervical vertebra.
Further, the face of upper centrum and sclerotin cooperation has trabecular bone structure；And/or hypocentrum and sclerotin cooperation
Face has trabecular bone structure.
Using the technical solution of the utility model, provide a kind of artificial dentata, in artificial dentata include upper centrum and
Hypocentrum, wherein upper centrum with atlas and axis for connecting, and hypocentrum with Cervical vertebra for connecting, movably due to hypocentrum
It is connect with upper centrum, therefore after being implanted into the artificial dentata, aloows atlas and axis with respect to Cervical vertebra activity, guarantee articulatio atlantoepistrophica
Mobility.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
In the accompanying drawings:
Fig. 1 shows the installation diagram of the artificial dentata of the embodiments of the present invention offer；
Fig. 2 shows the explosive views of Fig. 1；
Fig. 3 shows the cross-sectional view of Fig. 1；
Fig. 4 shows the cross-sectional view of Fig. 2；
Fig. 5 shows the structural schematic diagram of the locating part in Fig. 2.
Wherein, the above drawings include the following reference numerals:
10, upper centrum；11, arc groove；12, cylindrical hole；13, card slot；14, first through hole；20, hypocentrum；21, main body；
22, bulb；23, connecting column；24, the second through-hole；30, locating part；31, confined planes；32, notch.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical
Novel and its application or any restrictions used.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, is fallen within the protection scope of the utility model.
As shown in Figures 1 to 5, the embodiments of the present invention provide a kind of artificial dentata, comprising: upper centrum 10, on
Centrum 10 with atlas and axis for connecting；Hypocentrum 20 is movably connect with upper centrum 10, and hypocentrum 20 is used to connect with Cervical vertebra
It connects.
Using the technical solution of the present embodiment, a kind of artificial dentata is provided, includes upper 10 He of centrum in artificial dentata
Hypocentrum 20, wherein upper centrum 10 with atlas and axis for connecting, and hypocentrum 20 with Cervical vertebra for connecting, due to hypocentrum 20
It is movably connect with upper centrum 10, therefore after being implanted into the artificial dentata, aloows atlas and axis with respect to Cervical vertebra activity, protect
Demonstrate,prove the mobility of articulatio atlantoepistrophica.
In the present embodiment, upper centrum 10 has arc groove 11, and hypocentrum 20 has arc convex, and arc convex is rotatable
Ground is arranged in arc groove 11.By the cooperation of arc convex and arc groove 11 so that hypocentrum 20 can relatively upper 10 turns of centrum
It is dynamic, to guarantee the mobility of articulatio atlantoepistrophica.
As shown in Figure 3 and Figure 4, arc groove 11 is half ball-and-socket, and hypocentrum 20 includes that main body 21 and protrusion are arranged in main body 21
On bulb 22, for main body 21 for connect with Cervical vertebra, bulb 22 forms arc convex, and bulb 22 is at least partially disposed on partly
In ball-and-socket, bulb 22 can be dynamic in half ball-and-socket transfer.Bulb 22 is at least partially disposed in half ball-and-socket, lower vertebra may be implemented
Body 20 can make the activity of artificial dentata flexibly relative to the rotation of the multi-angle of the different directions of upper centrum 10, such set-up mode
It is convenient.In the present embodiment, bulb 22 and half ball-and-socket clearance fit, it is dynamic in half ball-and-socket transfer convenient for bulb 22 in this way.
In the present embodiment, hypocentrum 20 further includes connecting column 23, the both ends of connecting column 23 respectively with main body 21 and bulb
22 connections.Can be spaced apart by main body 21 and bulb 22 by connecting column 23, it can occur to turn to avoid main body 21 in this way
Interfere when dynamic with upper centrum 10.
As shown in Figures 2 to 5, artificial dentata further include: locating part 30, locating part 30 is for arc convex to be limited to
On centrum 10, to prevent arc convex from deviating from from arc groove 11.Arc convex and arc can be improved by the way that locating part 30 is arranged
The reliability that shape slot 11 cooperates.
As shown in figure 4, upper centrum 10 further includes cylindrical hole 12, cylindrical hole 12 is connected to arc groove 11, the side of cylindrical hole 12
There is card slot 13, locating part 30 and card slot 13 are clamped, and locating part 30 has confined planes 31, and confined planes 31 stop with arc convex on wall
Gear cooperation.Locating part 30 can be fixed by card slot 13, then be stopped by the confined planes 31 of locating part 30 with arc convex
Gear cooperation, to prevent arc convex from deviating from from arc groove 11.
Specifically, confined planes 31 are arcwall face, the surface matching of arcwall face and arc convex.On the one hand it can pass through in this way
Confined planes 31 limit to prevent arc convex from deviating from arc convex, on the other hand ensure that smoothly turning for arc convex
It is dynamic.
In the present embodiment, card slot 13 is annular groove, and locating part 30 is snap ring, and the internal diameter of snap ring is less than the straight of cylindrical hole 12
The circumferential direction of diameter, snap ring has notch 32.It, can be convenient for making snap ring that flexible deformation occur, with benefit in the circumferential setting notch 32 of snap ring
In the installation and removal of snap ring.In the present embodiment, the diameter of connecting column 23 is less than the internal diameter of snap ring, to guarantee that bulb 22 is smooth
Rotation.
As depicted in figs. 1 and 2, upper centrum 10 have first through hole 14, first through hole 14 for wear fastener with extensive region
Dentata connection；And/or hypocentrum 20 has the second through-hole 24, the second through-hole 24 is for wearing fastener to connect with Cervical vertebra.
It being reliably connected convenient for artificial dentata and skeleton by above-mentioned setting.In the present embodiment, main body 21 include ontology and
Plate body on the body is set, and the second through-hole 24 is located on plate body.
Further, upper centrum 10 and the face of sclerotin cooperation have trabecular bone structure；And/or hypocentrum 20 is matched with sclerotin
The face of conjunction has trabecular bone structure.In the face of upper centrum 10 or the cooperation of hypocentrum 20 and sclerotin, trabecular bone structure, Ke Yiyou are set
Effect induces Bone Ingrowth to reach the permanently effective fixation of artificial dentata.
In the present embodiment, the confined planes 31 of the outer surface of bulb 22, the inner surface of half ball-and-socket and snap ring are smooth
The activity relatively that can have both realized centrum 10 and hypocentrum 20 is arranged such in surface, while snap ring can effectively organize bulb 22
It exits, increases the safety of the device.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
Up to the unlimited the scope of the utility model processed of formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each shown in attached drawing
The size of a part is not to draw according to actual proportionate relationship.For skill known to person of ordinary skill in the relevant
Art, method and apparatus may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as awarding
Weigh part of specification.In shown here and discussion all examples, any occurrence should be construed as merely example
Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar
Label and letter similar terms are indicated in following attached drawing, therefore, once be defined in a certain Xiang Yi attached drawing, then with
In attached drawing afterwards do not need that it is further discussed.
In the description of the present invention, it should be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally,
Vertically, vertically, it is horizontal " and " pushing up, bottom " etc. indicated by orientation or positional relationship be normally based on orientation or position shown in the drawings
Relationship is set, is merely for convenience of describing the present invention and simplifying the description, in the absence of explanation to the contrary, these nouns of locality
Do not indicate that and imply that signified device or element must have a particular orientation or be constructed and operated in a specific orientation, because
This should not be understood as the limitation to scope of protection of the utility model；The noun of locality " inside and outside " refers to the wheel relative to each component itself
Wide is inside and outside.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for
Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this
The limitation of utility model protection range.
Claims (10)
1. a kind of artificial dentata characterized by comprising
Upper centrum (10), the upper centrum (10) with atlas and axis for connecting；
Hypocentrum (20) is movably connect with the upper centrum (10), and the hypocentrum (20) with Cervical vertebra for connecting.
2. artificial dentata according to claim 1, which is characterized in that the upper centrum (10) has arc groove (11), institute
Hypocentrum (20) are stated with arc convex, the arc convex is rotatably arranged in the arc groove (11).
3. artificial dentata according to claim 2, which is characterized in that the arc groove (11) is half ball-and-socket, the lower vertebra
Body (20) includes main body (21) and protrusion is arranged bulb (22) on the main body (21), the main body (21) be used for it is described
Cervical vertebra connection, the bulb (22) form the arc convex, and the bulb (22) is at least partially disposed on the hemisphere
In nest, the bulb (22) can be dynamic in the half ball-and-socket transfer.
4. artificial dentata according to claim 3, which is characterized in that the hypocentrum (20) further includes connecting column (23),
The both ends of the connecting column (23) are connect with the main body (21) and the bulb (22) respectively.
5. artificial dentata according to claim 2, which is characterized in that the artificial dentata further include:
Locating part (30), the locating part (30) is used to the arc convex being limited to the upper centrum (10), to prevent
Arc convex abjection from the arc groove (11).
6. artificial dentata according to claim 5, which is characterized in that the upper centrum (10) further includes cylindrical hole (12),
The cylindrical hole (12) is connected to the arc groove (11), has card slot (13) on the side wall of the cylindrical hole (12), the limit
Position part (30) and the card slot (13) be clamped, the locating part (30) have confined planes (31), the confined planes (31) with it is described
Arc convex counter stopper.
7. artificial dentata according to claim 6, which is characterized in that the confined planes (31) are arcwall face, the arc
The surface matching in face and the arc convex.
8. artificial dentata according to claim 6, which is characterized in that the card slot (13) is annular groove, the locating part
It (30) is snap ring, the internal diameter of the snap ring is less than the diameter of the cylindrical hole (12), and the circumferential direction of the snap ring has notch (32).
9. artificial dentata according to claim 1, which is characterized in that
The upper centrum (10) have first through hole (14), the first through hole (14) for wear fastener with the extensive region pivot
Vertebra connection；And/or
The hypocentrum (20) have the second through-hole (24), second through-hole (24) for wear fastener with the lower neck
Vertebra connection.
10. artificial dentata according to claim 1, which is characterized in that
The face of the upper centrum (10) and sclerotin cooperation has trabecular bone structure；And/or
The face of the hypocentrum (20) and sclerotin cooperation has trabecular bone structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821836121.XU CN209285844U (en) | 2018-11-08 | 2018-11-08 | Artificial dentata |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821836121.XU CN209285844U (en) | 2018-11-08 | 2018-11-08 | Artificial dentata |
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| Publication Number | Publication Date |
|---|---|
| CN209285844U true CN209285844U (en) | 2019-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821836121.XU Active CN209285844U (en) | 2018-11-08 | 2018-11-08 | Artificial dentata |
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| CN (1) | CN209285844U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109124833A (en) * | 2018-11-08 | 2019-01-04 | 北京爱康宜诚医疗器材有限公司 | Artificial dentata |
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2018
- 2018-11-08 CN CN201821836121.XU patent/CN209285844U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109124833A (en) * | 2018-11-08 | 2019-01-04 | 北京爱康宜诚医疗器材有限公司 | Artificial dentata |
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