CN203915062U - Novel Wicresoft articular process Universal screw nail - Google Patents
Novel Wicresoft articular process Universal screw nail Download PDFInfo
- Publication number
- CN203915062U CN203915062U CN201420304850.6U CN201420304850U CN203915062U CN 203915062 U CN203915062 U CN 203915062U CN 201420304850 U CN201420304850 U CN 201420304850U CN 203915062 U CN203915062 U CN 203915062U
- Authority
- CN
- China
- Prior art keywords
- screw
- spherical head
- shaped cover
- ball
- supporting surface
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000012856 packing Methods 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 5
- 239000011796 hollow space material Substances 0.000 claims abstract description 4
- 208000008035 Back Pain Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000008930 Low Back Pain Diseases 0.000 description 1
- 208000019804 backache Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000001054 cortical effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The utility model discloses a kind of novel Wicresoft articular process Universal screw nail, it has: hollow screw, and it has spherical head and the undergauge section adjacent with spherical head, for the U-shaped cover of hollow screw is installed, the cover body of described U-shaped cover is provided with opening towards the U-shaped groove that overlaps body bearing of trend and be arranged symmetrically with, U-shaped cover inner chamber is provided with helicitic texture near its base section, U-shaped cover bottom has the ball-type supporting surface coordinating with the spherical head of screw, and the extending end of this ball-type supporting surface has screw and stretches out hole, the spherical head that is installed on ball-type supporting surface is installed with the hollow gasket being mated, this packing ring bottom has the spherical structure coordinating with spherical head, and this spherical structure, the hollow space of packing ring and ball-type supporting surface are common forms one for the rotation space of screw spherical head activity, described screw maximum rotation angle in rotation space is 0 to 70 degree.This product design is reasonable, and novel structure, uniqueness produce processing simply, and clinical manipulation is very convenient.
Description
Technical field
This utility model relates to spinal surgery technical field of medical instruments, especially relates to a kind of novel Wicresoft articular process Universal screw nail.
Background technology
The pedicle screw-rod fixed system in past has several large defects:
1. wound area is large;
2. soft tissue is peeled off extensively;
3. paraspinal muscle stop is destroyed;
4. clash in articular process and joint;
5. postoperative lumbago and backache often has generation.
Poor biomechanics characteristic greatly limits it and applies separately, so articular process of lumbar vertebra screw fixation method arouses attention again, more needs a kind of lumbar vertebra fixed form of Wicresoft more.
Utility model content
The purpose of this utility model is exactly in order to address the above problem, and a kind of novel Wicresoft articular process Universal screw nail is provided, and it has inherited the feature that interarticular screw wound is little, expense is low, and has incorporated the characteristic that pedicle nail fixes.Adopt distinctive V-arrangement to put nail, special cortical bone screw thread meets affirming of biomechanics characteristic simultaneously.
To achieve these goals, this utility model adopts following technical scheme:
Novel Wicresoft articular process Universal screw nail, it has: hollow screw (3), it has spherical head (30) and the undergauge section (31) adjacent with spherical head, for the U-shaped cover (1) of hollow screw is installed, the cover body of described U-shaped cover is provided with opening towards the U-shaped groove that overlaps body bearing of trend and be arranged symmetrically with, U-shaped cover inner chamber is provided with helicitic texture near its base section, U-shaped cover bottom has the ball-type supporting surface (10) coordinating with the spherical head of screw, and the extending end of this ball-type supporting surface has screw and stretches out hole, the spherical head that is installed on ball-type supporting surface is installed with the hollow gasket (2) being mated, this packing ring (2) bottom has the spherical structure (20) coordinating with spherical head, and this spherical structure, the hollow space of packing ring and ball-type supporting surface are common forms one for the rotation space of screw spherical head activity, described screw maximum rotation angle in rotation space is 70 degree.
As further improvement of the utility model is, the spherical place of described U-shaped cover is provided with the breach (11) for screw deflection.
Compared with prior art, the utlity model has following beneficial effect: reasonable in design, novel structure, uniqueness, produce processing simply, and clinical manipulation is very convenient.
Accompanying drawing explanation
Fig. 1 is novel Wicresoft articular process Universal screw nail general assembly drawing.
Fig. 2 is the result of use figure of novel Wicresoft articular process Universal screw nail, and its embodiment rotates freely wide-angle interarticular screw extreme angles.
Fig. 3 a is U-shaped cover front view in novel Wicresoft articular process Universal screw nail.
Fig. 3 b is U-shaped cover side view in novel Wicresoft articular process Universal screw nail.
Fig. 3 c is U-shaped cover right view in novel Wicresoft articular process Universal screw nail.
Fig. 3 d is D-D cutaway view in Fig. 3 c.
Fig. 4 a is novel Wicresoft articular process Universal screw nail middle washer front view.
Fig. 4 b is novel Wicresoft articular process Universal screw nail middle washer cutaway view.
Fig. 5 is bolt structure schematic diagram in novel Wicresoft articular process Universal screw nail.
Fig. 6 a is that V-type is put nail design sketch I.
Fig. 6 b is that V-type is put nail design sketch II.
The specific embodiment
For technological means, creation characteristic that this utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth this utility model.
As shown in Fig. 1～6b, novel Wicresoft articular process Universal screw nail, it comprises U-shaped cover 1, packing ring 2 and screw 3.
Referring to 5, this novel Wicresoft articular process Universal screw nail comprises a hollow screw 3, and it has spherical head 30 and the undergauge section 31 adjacent with spherical head, and this undergauge section 31 is isometrical, but external diameter is less than the main part of screw.
Referring to 3a～3d, this novel Wicresoft articular process Universal screw nail comprises that one for installing the U-shaped cover 1 of hollow screw, the cover body of described U-shaped cover is provided with opening towards the U-shaped groove that overlaps body bearing of trend and be arranged symmetrically with, U-shaped cover inner chamber is provided with helicitic texture near its base section, U-shaped cover bottom has the ball-type supporting surface 10 coordinating with the spherical head of screw, and the extending end of this ball-type supporting surface has screw and stretches out hole.
Referring to Fig. 4 a～4b, the spherical head that is installed on ball-type supporting surface is installed with the hollow gasket 2 being mated, and these packing ring 2 bottoms have the spherical structure 20 coordinating with spherical head.
Referring to Fig. 1～2, the hollow space of described spherical structure, packing ring and ball-type supporting surface are common forms one for the rotation space of screw spherical head activity, described screw maximum rotation angle in rotation space is 70 degree, referring to Fig. 2, in this figure, the axis of U-shaped cover and the axis angle of screw are 0-70 degree, and it is screw limit rotational angle.This structure is convenient to realize V-arrangement and is put nail, and described V-arrangement is put nail and is: the next vertebral body is inserted one piece of pedicle screw, upper vertebral body is inserted one piece of offside interarticular screw, adopts the universal characteristics design of articular process wide-angle, uses stub to connect.
Referring to Fig. 1,2, for convenience of the angular deflection of screw, the spherical place of described U-shaped cover is provided with the breach 11 for screw deflection.The size of this breach is less than the size of screw spherical head, and its barbed portion is for the undergauge section (referring to Fig. 2) in place of screw.
The foregoing is only preferred implementation of the present utility model, protection domain of the present utility model is not limited in above-mentioned embodiment, and every technical scheme that belongs to this utility model principle all belongs to protection domain of the present utility model.For a person skilled in the art, some improvement of carrying out under the prerequisite that does not depart from principle of the present utility model, these improvement also should be considered as protection domain of the present utility model.
Claims (2)
1. novel Wicresoft articular process Universal screw nail, it has: hollow screw (3), it has spherical head (30) and the undergauge section (31) adjacent with spherical head, for the U-shaped cover (1) of hollow screw is installed, the cover body of described U-shaped cover is provided with opening towards the U-shaped groove that overlaps body bearing of trend and be arranged symmetrically with, U-shaped cover inner chamber is provided with helicitic texture near its base section, it is characterized in that, U-shaped cover bottom has the ball-type supporting surface (10) coordinating with the spherical head of screw, and the extending end of this ball-type supporting surface has screw and stretches out hole, the spherical head that is installed on ball-type supporting surface is installed with the hollow gasket (2) being mated, this packing ring (2) bottom has the spherical structure (20) coordinating with spherical head, and this spherical structure, the hollow space of packing ring and ball-type supporting surface are common forms one for the rotation space of screw spherical head activity, described screw maximum rotation angle in rotation space is 70 degree.
2. novel Wicresoft according to claim 1 articular process Universal screw nail, is characterized in that, the spherical place of described U-shaped cover is provided with the breach (11) for screw deflection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420304850.6U CN203915062U (en) | 2014-06-10 | 2014-06-10 | Novel Wicresoft articular process Universal screw nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420304850.6U CN203915062U (en) | 2014-06-10 | 2014-06-10 | Novel Wicresoft articular process Universal screw nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203915062U true CN203915062U (en) | 2014-11-05 |
Family
ID=51810957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420304850.6U Expired - Lifetime CN203915062U (en) | 2014-06-10 | 2014-06-10 | Novel Wicresoft articular process Universal screw nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203915062U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106037832A (en) * | 2015-04-10 | 2016-10-26 | 柯惠Lp公司 | Adapter assemblies and electromechanical surgical systems |
-
2014
- 2014-06-10 CN CN201420304850.6U patent/CN203915062U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106037832A (en) * | 2015-04-10 | 2016-10-26 | 柯惠Lp公司 | Adapter assemblies and electromechanical surgical systems |
| CN106037832B (en) * | 2015-04-10 | 2020-05-12 | 柯惠Lp公司 | Adapter assembly and electromechanical surgical system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141105 |