CN205126384U - Way board before auto -lock integral type cervical vertebra - Google Patents
Way board before auto -lock integral type cervical vertebra Download PDFInfo
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- CN205126384U CN205126384U CN201520796551.3U CN201520796551U CN205126384U CN 205126384 U CN205126384 U CN 205126384U CN 201520796551 U CN201520796551 U CN 201520796551U CN 205126384 U CN205126384 U CN 205126384U
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- snap ring
- screw thread
- sphere
- anterior cervical
- cervical plates
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Abstract
The utility model discloses a way board before auto -lock integral type cervical vertebra belongs to medical instrument technical field, the way edition of books body, snap ring, universal screw before the cervical vertebra, the sphere no. 1 of pore wall for taking serration groove no. 1 in locking hole, locking hole has been seted up before the cervical vertebra on the way edition of books body, the snap ring has the opening, and it is downthehole in the locking that the sphere no. 2 of snap ring outer wall for taking serration groove no. 2, snap ring pass through the elastic deformation assembly, and mutual gomphosis assembly is realized through serration groove no. 1 with setting up of serration groove no. 2 with sphere no. 2 to sphere no. 1, be equipped with screw thread no. 1 on the snap ring inner wall, the head lateral wall of universal screw is the circular conical surface, and be equipped with on the head lateral wall with a screw thread matched with screw thread no. 2, the head of universal screw passes through screw thread no. 1 and is connected in the snap ring with the cooperation screw in of screw thread no. 2. The utility model discloses the wholeness is good, and the edition of books body in way can not drop, become flexible before the cervical vertebra, and the nail can be moved back and secondary locking is carried out, operation process time weak point, easy operation, operation safety, reducible postsurgical is to the stimulation of esophagus and patient's foreign body sensation.
Description
Technical field
This utility model discloses a kind of self-locking integral type anterior cervical plates, belongs to technical field of medical instruments.
Background technology
In the process that modern economy develops rapidly, the sickness rate of cervical spondylosis is very high, and in the developing of cervical spondylosis, chronic strain, wound, congenital malformation or defect etc. all may become the pathogenic factors of cervical spondylosis.These pathological changes cause cervical spinal canal or intervertebral foramina distortion, narrow, stimulate, compressing cervical spinal cord, nerve root, and cause the disease of corresponding clinical symptoms.Drug therapy can not fundamentally be treated, and carrying out operative treatment becomes inevitable.
At present, mainly there is following shortcoming in the anterior cervical plates on market, as: nail-plate (anterior cervical plates body) easily comes off, loosen; Can not secondary locking, increase operating time; Nail-plate and the comprehensive docile of skeleton, affect blood fortune; The incisura of nail-plate is high, width is narrow, affects the life of patient.For addressing these problems, this case produces thus.
Utility model content
The purpose of this utility model is to provide short, simple to operate, handling safety of a kind of operation process time, the self-locking integral type anterior cervical plates less on the impact of patient's later life.
For achieving the above object, the technical scheme that this utility model adopts is:
A kind of self-locking integral type anterior cervical plates, comprises anterior cervical plates body, snap ring, Universal screw nail; Anterior cervical plates body offers lock hole, and the hole wall of lock hole is the sphere one of band serrated slot one; Snap ring is with opening, snap ring outer wall is the sphere two of band serrated slot two, snap ring is assemblied in lock hole by elastic deformation, and sphere one realizes mutually chimeric assemble (namely spherical calotte one be embedded in serrated slot two in, spherical calotte two be embedded in serrated slot one in) by serrated slot one with arranging of serrated slot two with sphere two; Snap ring inwall is provided with screw thread one; The head side wall of Universal screw nail is taper seat, and head side wall is provided with the screw thread two matched with screw thread one, and the head of Universal screw nail is coordinated to screw in be connected in snap ring by screw thread one and screw thread two.
This utility model self-locking integral type anterior cervical plates, is made up of anterior cervical plates body, snap ring, Universal screw nail.Snap ring is placed in the lock hole of anterior cervical plates body by elastic deformation, and Universal screw nail is by being threaded in snap ring.Because Universal screw nail head side wall is with tapering, therefore snap ring can be made in screwing operations to expand, and then serrated slot on anterior cervical plates body one and the serrated slot two on snap ring are embedded (namely the thorough holding of the sphere two of snap ring external belt serrated slot two is on the sphere one of anterior cervical plates body band serrated slot one) mutually, finally realize anterior cervical plates body, snap ring, Universal screw nail three tightly lock and be integrated.
Arrange owing to being with the sphere of serrated slot and considerably increase frictional force compared with the smooth sphere of other products, therefore the sphere one of lock hole band serrated slot one, combine with the sphere two of the band serrated slot two of snap ring outside, effectively can prevent loosening of snap ring and Universal screw nail, utilize the frictional force in snap ring and anterior cervical plates body contacts face to be greater than Universal screw nail withdraw force simultaneously, make Universal screw nail energy secondary use or repeatedly use, shorten operating time, reduce operation risk and cost.
As the further setting of such scheme, described screw thread one and screw thread two are triple thread.Universal screw nail and snap ring adopt triple thread to combine, make Universal screw nail can sooner, more stable screw-in anterior cervical plates body.
The lower surface of described anterior cervical plates body is arranged with step surface, the direct effect power between anterior cervical plates body and skeleton can be reduced, optimize the stress structure of operative site, the sclerotin change that the stress changes that prevention operation brings brings out, effectively can reduce the blood fortune impact on operative site periostal surface, shorten the bone fusion time.
Described anterior cervical plates body is the anterior cervical plates body that incisura is low, width is narrow, for patient provides comfortable physiological sensation.
In a word, this utility model self-locking integral type anterior cervical plates, good integrity, anterior cervical plates body can not come off, loosen, can move back nail and carry out secondary locking, operation process time short, simple to operate, handling safety, can reduce the stimulation of Post operation to esophagus and the foreign body sensation of patient.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of anterior cervical plates body in this utility model;
Fig. 3 is the plan structure schematic diagram of Fig. 2;
Fig. 4 is that A-A in Fig. 3 is to sectional structure schematic diagram;
Fig. 5 is the B portion structure for amplifying schematic diagram in Fig. 4;
Fig. 6 is the structural representation of Universal screw nail in this utility model;
Fig. 7 is the structural representation of snap ring in this utility model;
Fig. 8 is the sectional structure schematic diagram of Fig. 7.
Detailed description of the invention
Shown in composition graphs 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, this utility model self-locking integral type anterior cervical plates, comprises anterior cervical plates body 1, snap ring 2, Universal screw nail 3.Anterior cervical plates body 1 offers lock hole 11, the hole wall of lock hole 11 is the sphere 1 of band serrated slot 1.Snap ring 2 is with opening 21, and snap ring 2 outer wall is the sphere 2 23 of band serrated slot 2 22, and snap ring 2 is assemblied in lock hole 11 by elastic deformation, and sphere 1 realizes mutually chimeric assemble by serrated slot 1 with arranging of serrated slot 2 22 with sphere 2 23; Snap ring 2 inwall is provided with screw thread 1.The head side wall of Universal screw nail 3 is taper seat, and head side wall is provided with the screw thread 2 31 matched with screw thread 1, and the head of Universal screw nail 3 is coordinated to screw in be connected in snap ring 2 by screw thread 1 and screw thread 2 31.
In order to make, the assembling of Universal screw nail 3 is more quick, safety, and screw thread 1 and screw thread 2 31 are triple thread, namely adopt triple thread to combine between Universal screw nail 3 with snap ring 2.
For reducing the impact on blood fortune, this utility model is arranged with step surface 14 in the lower surface of anterior cervical plates body 1.
In order to provide more comfortable physiological sensation to patient, anterior cervical plates body 1 of the present utility model is the anterior cervical plates body that incisura is low, width is narrow.
This utility model self-locking integral type anterior cervical plates, utilizes the opening 21 on snap ring 2, is carried out by snap ring 2 loading in lock hole 11 after extruding produces elastic deformation, makes the centre of sphere of snap ring 2 lower than anterior cervical plates body 1 surface.Then, by Universal screw nail 3 by being threaded in snap ring 2.Because Universal screw nail 3 head side wall is with tapering, therefore snap ring 2 expansion can be made in screwing operations to strut, and then serrated slot on anterior cervical plates body 11 and the serrated slot 2 22 on snap ring 2 are embedded (namely the thorough holding of the sphere 2 23 of snap ring 2 external belt serrated slot 2 22 is on the sphere one 13 of anterior cervical plates body 1 with serrated slot 1) mutually, simultaneously the head of Universal screw nail 3 is also locked in snap ring 2, finally realizes anterior cervical plates body 1, snap ring 2, Universal screw nail 3 three in one formula tightly lock effect.
Because the sphere two 23 of snap ring 2 with serrated slot 2 22 assembles mutually with the sphere 1 of anterior cervical plates body 1 with serrated slot 1, add the contact friction force between snap ring 2 and anterior cervical plates body 1, the power making Universal screw nail 3 exit skeleton is less than the frictional force that snap ring 2 contacts with anterior cervical plates body 1.Therefore, can facilitate Universal screw nail 3 in operation process, exit anterior cervical plates body 1, realize operation process Universal screw nail 3 secondary locking and use, anterior cervical plates body 1 and snap ring 2 need not be dismantled, save time and cost.
The lowered zones 15 of anterior cervical plates body 1, reduces the impact of transporting periosteum blood by providing enough spaces.
Above-described embodiment only illustrates inventive concept of the present utility model for explaining, but not the restriction to this utility model rights protection, all changes utilizing this design this utility model to be carried out to unsubstantiality, all should fall into protection domain of the present utility model.
Claims (4)
1. a self-locking integral type anterior cervical plates, is characterized in that: comprise anterior cervical plates body, snap ring, Universal screw nail; Anterior cervical plates body offers lock hole, and the hole wall of lock hole is the sphere one of band serrated slot one; Snap ring is with opening, and snap ring outer wall is the sphere two of band serrated slot two, and snap ring is assemblied in lock hole by elastic deformation, and sphere one realizes mutually chimeric assemble by serrated slot one with arranging of serrated slot two with sphere two; Snap ring inwall is provided with screw thread one; The head side wall of Universal screw nail is taper seat, and head side wall is provided with the screw thread two matched with screw thread one, and the head of Universal screw nail is coordinated to screw in be connected in snap ring by screw thread one and screw thread two.
2. self-locking integral type anterior cervical plates as claimed in claim 1, is characterized in that: described screw thread one and screw thread two are triple thread.
3. self-locking integral type anterior cervical plates as claimed in claim 1 or 2, is characterized in that: the lower surface of described anterior cervical plates body is arranged with step surface.
4. self-locking integral type anterior cervical plates as claimed in claim 3, is characterized in that: described anterior cervical plates body is the anterior cervical plates body that incisura is low, width is narrow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520796551.3U CN205126384U (en) | 2015-10-15 | 2015-10-15 | Way board before auto -lock integral type cervical vertebra |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520796551.3U CN205126384U (en) | 2015-10-15 | 2015-10-15 | Way board before auto -lock integral type cervical vertebra |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205126384U true CN205126384U (en) | 2016-04-06 |
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ID=55612212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520796551.3U Active CN205126384U (en) | 2015-10-15 | 2015-10-15 | Way board before auto -lock integral type cervical vertebra |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205126384U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105213004A (en) * | 2015-10-15 | 2016-01-06 | 浙江嘉佑医疗器械有限公司 | Self-locking integral type anterior cervical plates |
| CN108294816A (en) * | 2018-02-05 | 2018-07-20 | 四川大学华西医院 | Low incisura zero margin apart from steel sheet of anterior cervical spine |
-
2015
- 2015-10-15 CN CN201520796551.3U patent/CN205126384U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105213004A (en) * | 2015-10-15 | 2016-01-06 | 浙江嘉佑医疗器械有限公司 | Self-locking integral type anterior cervical plates |
| CN108294816A (en) * | 2018-02-05 | 2018-07-20 | 四川大学华西医院 | Low incisura zero margin apart from steel sheet of anterior cervical spine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |