CN202859279U - Novel minimally invasive hollow breakable long-tail screw - Google Patents
Novel minimally invasive hollow breakable long-tail screw Download PDFInfo
- Publication number
- CN202859279U CN202859279U CN 201220523901 CN201220523901U CN202859279U CN 202859279 U CN202859279 U CN 202859279U CN 201220523901 CN201220523901 CN 201220523901 CN 201220523901 U CN201220523901 U CN 201220523901U CN 202859279 U CN202859279 U CN 202859279U
- Authority
- CN
- China
- Prior art keywords
- screw
- shaped cover
- hollow
- ball
- shaped
- Prior art date
- 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
Images
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model discloses a novel minimally invasive hollow breakable long-tail screw which comprises a hollow bone screw, a U-shaped cover, a connecting bar and a plug screw. The hollow bone screw is provided with a spherical head. A spherical bearing surface is arranged at the bottom of the U-shaped cover, a bone screw extending out hole is arranged in the extending end of the spherical bearing surface, a cover body of the U-shaped cover is provided with a symmetrically arranged U-shaped groove with an opening towards the extending direction of the cover body, and a thread structure is arranged on the portion close to the bottom of an internal cavity of the U-shaped cover. The connecting bar is arranged in the U-shaped groove. The plug screw with a fastening structure is arranged on the thread structure portion of the internal cavity of the u-shaped cover and pressed on a connecting rod, and a gasket is arranged between the spherical head and the spherical bearing surface. The novel minimally invasive hollow breakable long-tail screw is characterized in that the cover body of the U-shaped cover is provided with several fragile grooves which are circumferential arranged. Compared with the prior art, the novel minimally invasive hollow breakable long-tail screw has the advantages that the design is rational, the structure is novel and unique, the production and processing are easy, the clinical operation is convenient, and the risk of operation failure is greatly reduced.
Description
Technical field
This utility model relates to the spinal surgery technical field of medical instruments, especially relates to the broken long-tail screw of a kind of novel Wicresoft hollow.
Background technology
The percutaneous cervical arc root screw internal fixation is one of main flow direction of minimally invasive spine development at present, has represented the frontier science and technology of spinal surgery.
The tradition posterior approach is peeled off the exposure operative region by muscle, and the multifidi damage for the inboard is complete especially.Cut off on the one hand the syntenosis of multifidi and spinous process and vertebral plate in the stripping process, the postoperative multifidi has reduced the contractile function of muscle, so that the myogenesis disuse atrophy by muscular tissue and bone sex organization scar healing.To the protection of paraspinal muscle in the posterior lumbar spinal surgery, caused gradually the extensive concern of international orthopedics circle, the damage that studies confirm that paraspinal muscle becomes lumbar and back pain and handicapped new reason behind the operation in patients.MISS has the advantages such as wound is little, rehabilitation is fast with respect to conventional therapy, can well avoid its generation.
Wicresoft's pedicle nail is designed with a variety of at present, mantis system such as Stryker company, the Viper system of Depuy company, and the longitude system of Sofamor company all are that hollow screw adds lengthening sleeve or the long-tail hollow screw is set up the percutaneous passage basically.But can interfere when in some cases, particularly waist 5 sacrums 1 are installed lengthening sleeve or long-tail nail and can't install.And under Wicresoft's channel system, when in single small incision, two screws being installed, just more be difficult to operation with lengthening sleeve or long-tail nail.
The utility model content
The purpose of this utility model is exactly in order to address the above problem, and provides a kind of novel Wicresoft hollow broken long-tail screw, fractures according to the situation of installing in operation, avoids interfering.
To achieve these goals, this utility model adopts following technical scheme:
The broken long-tail screw of a kind of novel Wicresoft hollow, it comprises:
The bone screw of hollow, it has the ball-type head;
U-shaped cover, the extending end that its bottom has ball-type supporting surface and this ball-type supporting surface has bone screw and stretches out the hole, the cover body that is positioned at U-shaped cover is provided with opening towards the U-shaped groove that overlaps the body bearing of trend and be arranged symmetrically with, and U-shaped cover inner chamber is provided with helicitic texture near its base section;
Pitman, it is installed on U-shaped groove;
Be provided with the plug screw of fastening structure, it is installed on the helicitic texture part of U-shaped cover inner chamber and is installed with on connecting rod;
Be provided with packing ring between described ball-type head and the ball-type supporting surface, it is characterized in that, the cover body of described U-shaped cover has the easy fault trough of some circumferential arrangement.
As further improvement of the utility model being described easy fault trough is equidistantly arranged along the cover body.
As further improvement of the utility model being described easy fault trough equidistantly is furnished with three or many easy fault troughs along cover body extending direction.
As further improvement of the utility model being have the active segment for the bone screw rotation between the ball-type head of described bone screw and the thread segment, the set bone screw of the U-shaped cover of the diameter of this active segment is stretched out the aperture in hole.
As further improvement of the utility model being the sidewall of described U-shaped cover is provided with two holes one, described hole one has with U-shaped cover and is one and can produces the thin-walled of deformation, and the outer wall of described packing ring is provided with two holes two that cooperate with two holes one of two U-shaped covers.
As further improvement of the utility model being the position of described thin-walled is near the inner chamber of U-shaped cover.
As further improvement of the utility model being the inside of described packing ring has the Internal Spherical Surface that cooperates with the ball-type head.
Compared with prior art, the utility model has the advantage of that the broken long-tail screw designs of novel Wicresoft hollow is reasonable, novel structure, uniqueness, production and processing is simple, and clinical manipulation is very convenient, can greatly reduce the risk of operative failure.
Description of drawings
Fig. 1 is the broken long-tail bolt structure of a kind of novel Wicresoft hollow sketch map.
Fig. 2 is the broken long-tail screw of a kind of novel Wicresoft hollow cutaway view.
Fig. 3 a is U-shaped nested structure sketch map in the broken long-tail screw of a kind of novel Wicresoft hollow.
Fig. 3 b is U-shaped cover cutaway view in the broken long-tail screw of a kind of novel Wicresoft hollow.
Fig. 4 a is bone screw structural representation in the broken long-tail screw of a kind of novel Wicresoft hollow.
Fig. 4 b is the right view of bone screw among Fig. 4 a.
Fig. 4 c is the cutaway view of bone screw among Fig. 4 a.
Fig. 5 a is the broken long-tail screw of a kind of novel Wicresoft hollow middle washer structural representation.
Fig. 5 b is the cutaway view of Fig. 5 a middle washer.
Fig. 6 a is screw plug structure sketch map in the broken long-tail screw of a kind of novel Wicresoft hollow.
Fig. 6 b is the cutaway view of plug screw among Fig. 6 a.
Among the figure: the 1-bone screw; The 2-packing ring; The 3-U jacket; The 4-pitman; The 5-plug screw; 11-ball-type head; The 12-active segment; 21-hole two; The 22-Internal Spherical Surface; 31-ball-type supporting surface; 32-hole one; 33-U type groove; The easy fault trough of 34-.
The specific embodiment
For technological means, creation characteristic that this utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth this utility model.
Shown in Fig. 1-6, the broken long-tail screw of a kind of novel Wicresoft hollow, it comprises: the bone screw 1 of hollow, it has ball-type head 11; U-shaped cover 3, the extending end that its bottom has ball-type supporting surface 31 and this ball-type supporting surface has bone screw and stretches out the hole, the cover body that is positioned at U-shaped cover is provided with opening towards the U-shaped groove 33 that overlaps the body bearing of trend and be arranged symmetrically with, U-shaped cover inner chamber is provided with helicitic texture near its base section, and bone screw 1 is fitted by its ball-type head 11 and U-shaped cover 3 bottom ball-type supporting surfaces 31; Pitman 4, it is installed on U-shaped groove; Be provided with the plug screw 5 of fastening structure, it is installed on the helicitic texture part of U-shaped cover inner chamber and is installed with on connecting rod, and the fastening structure of plug screw is to be located at its inner chamber and to be convenient to utilize instrument with its groove shape structure that screws; Be provided with packing ring 2 between described ball-type head and the ball-type supporting surface, the cover body of described U-shaped cover has the easy fault trough 34 of some circumferential arrangement, can fracture according to patient's situation and not affect and wear excellent visuality, described easy fault trough 34 can equidistantly be arranged along the cover body, spacing each other arranges according to the needs of operation, here, described easy fault trough equidistantly is furnished with three or many easy fault troughs along cover body extending direction.
Have the active segment 12 for bone screw rotation between the ball-type head of described bone screw 1 and the thread segment, the set bone screw of the U-shaped cover of the diameter of this active segment is stretched out the aperture in hole, bone screw 1 can and U-shaped cover 3 between produce rotation and form angle.Can obtain very large angle between bone screw 1 and the U-shaped cover 3, thereby satisfy clinical demand.The angle that bone screw 1 and U-shaped cover 3 obtain is seen shown in Fig. 2.
The sidewall of described U-shaped cover 3 is provided with two holes 1, hole one is in symmetry status substantially, described hole 1 has with U-shaped cover and is one and can produces the thin-walled of deformation, the outer wall of described packing ring is provided with two holes 2 21 that cooperate with two holes one of two U-shaped covers, and the position of described thin-walled is convenient to thin-walled and is pressed into hole two near the inner chamber of U-shaped cover, thereby packing ring is fixing firmly, during installation U-shaped cover 3 thin-walleds are poured the Kong Erzhong of packing ring, prevent that packing ring 2 from dropping out, thereby make screw become as a whole.
The inside of described packing ring 2 has the Internal Spherical Surface 22 that cooperates with the ball-type head, and this Internal Spherical Surface 22 and bone screw 1 ball-type head 11 form fits.
The installation process of this device is, by with pitman 4 along being pressed in the U-shaped groove 33 of U-shaped cover 3, screw plug screw 5, pitman 4 is pressed on pressure to bone screw 1 on the U-shaped cover 3 bottom ball-type supporting surfaces 31 through packing ring 2, thereby forms closely fixing.
The above only is preferred implementation of the present utility model, and 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 under the prerequisite that does not break away from principle of the present utility model, carrying out, these improvement also should be considered as protection domain of the present utility model.
Claims (7)
1. broken long-tail screw of novel Wicresoft hollow, it comprises: the bone screw of hollow, it has the ball-type head; U-shaped cover, the extending end that its bottom has ball-type supporting surface and this ball-type supporting surface has bone screw and stretches out the hole, the cover body that is positioned at U-shaped cover is provided with opening towards the U-shaped groove that overlaps the body bearing of trend and be arranged symmetrically with, and U-shaped cover inner chamber is provided with helicitic texture near its base section; Pitman, it is installed on U-shaped groove; Be provided with the plug screw of fastening structure, it is installed on the helicitic texture part of U-shaped cover inner chamber and is installed with on connecting rod; Be provided with packing ring between described ball-type head and the ball-type supporting surface, it is characterized in that, the cover body of described U-shaped cover has the easy fault trough of some circumferential arrangement.
2. the broken long-tail screw of a kind of novel Wicresoft hollow as claimed in claim 1 is characterized in that, described easy fault trough is equidistantly arranged along the cover body.
3. the broken long-tail screw of a kind of novel Wicresoft hollow as claimed in claim 1 is characterized in that, described easy fault trough equidistantly is furnished with three or many easy fault troughs along cover body extending direction.
4. the broken long-tail screw of a kind of novel Wicresoft hollow as claimed in claim 1, it is characterized in that, have the active segment for the bone screw rotation between the ball-type head of described bone screw and the thread segment, the set bone screw of the U-shaped cover of the diameter of this active segment is stretched out the aperture in hole.
5. the broken long-tail screw of a kind of novel Wicresoft hollow as claimed in claim 1, it is characterized in that, the sidewall of described U-shaped cover is provided with two holes one, described hole one has with U-shaped cover and is one and can produces the thin-walled of deformation, and the outer wall of described packing ring is provided with two holes two that cooperate with two holes one of two U-shaped covers.
6. the broken long-tail screw of a kind of novel Wicresoft hollow as claimed in claim 5 is characterized in that, the position of described thin-walled is near the inner chamber of U-shaped cover.
7. the broken long-tail screw of a kind of novel Wicresoft hollow as claimed in claim 1 is characterized in that the inside of described packing ring has the Internal Spherical Surface that cooperates with the ball-type head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220523901 CN202859279U (en) | 2012-10-12 | 2012-10-12 | Novel minimally invasive hollow breakable long-tail screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220523901 CN202859279U (en) | 2012-10-12 | 2012-10-12 | Novel minimally invasive hollow breakable long-tail screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202859279U true CN202859279U (en) | 2013-04-10 |
Family
ID=48026046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220523901 Expired - Lifetime CN202859279U (en) | 2012-10-12 | 2012-10-12 | Novel minimally invasive hollow breakable long-tail screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202859279U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103919603A (en) * | 2014-04-18 | 2014-07-16 | 北京市奥斯比利克新技术开发有限公司 | Long-tail U-type vertebral pedicle locking device |
| CN105326544A (en) * | 2014-08-11 | 2016-02-17 | 天津康立尔生物科技有限公司 | Breakable pedicle screw |
-
2012
- 2012-10-12 CN CN 201220523901 patent/CN202859279U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103919603A (en) * | 2014-04-18 | 2014-07-16 | 北京市奥斯比利克新技术开发有限公司 | Long-tail U-type vertebral pedicle locking device |
| CN105326544A (en) * | 2014-08-11 | 2016-02-17 | 天津康立尔生物科技有限公司 | Breakable pedicle screw |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW200726428A (en) | Polyaxial screw | |
| CN203458462U (en) | Spinal pedicle screw | |
| CN202859279U (en) | Novel minimally invasive hollow breakable long-tail screw | |
| CN103750936B (en) | Top formula fracture fixation support in overcoat | |
| CN204931830U (en) | A kind of pedicle of vertebral arch fixed system | |
| CN208625834U (en) | A kind of adjustable double flute internal fixation device of spine and bone screws | |
| CN201076514Y (en) | Cervical posterior approach bolt | |
| CN201631359U (en) | Rod and plate inner fixation device for lumbar sacroiliac anatomical angles | |
| CN109549696A (en) | A kind of adjustable double flute internal fixation device of spine and bone screws | |
| CN204410945U (en) | The anterior approach cranium neck fixture improved | |
| CN209091592U (en) | Adjustable intramedullary nail | |
| WO2017166423A1 (en) | Locking and external-fixation device for treatment of tibial fracture | |
| CN206183355U (en) | Unipolar pedicle screw of wicresoft | |
| CN113303897A (en) | Assembled cortical bone screw | |
| CN202554039U (en) | Adjustable curet | |
| CN202365900U (en) | Internal fixation device of spine | |
| CN207613849U (en) | A kind of pedicle nail | |
| CN204839721U (en) | Nail ware is got in orthopedics special use | |
| CN203089330U (en) | Lumbar vertebrae fracture reduction device | |
| CN203483490U (en) | Horizontal connection device of spine nail bar | |
| CN204708958U (en) | Spinous process fixation device | |
| CN103800111A (en) | Inner sustaining type sleeve support for fracture fixation | |
| CN203915062U (en) | Novel Wicresoft articular process Universal screw nail | |
| CN208625839U (en) | The double pawl reduction fixture devices of Minimally Invasive Surgery of fracturing | |
| CN201949112U (en) | Fixed square block for percutaneous pedicle screw |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUANG XIAOMIN SHANGHAI RIZHI MEDICAL DEVICE CO., L Free format text: FORMER OWNER: HUANG XIAOMIN Effective date: 20130930 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130930 Address after: 181-5-104 No. 443000 Hubei city of Yichang province Yiling Wu Gang Road Patentee after: Zhao Hongwei Patentee after: Huang Xiaomin Patentee after: SHANGHAI REACH MEDICAL INSTRUMENT Co.,Ltd. Address before: 181-5-104 No. 443000 Hubei city of Yichang province Yiling Wu Gang Road Patentee before: Zhao Hongwei Patentee before: Huang Xiaomin |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |
|
| CX01 | Expiry of patent term |