CN105342684B - A kind of U-shaped pedicle nail - Google Patents
A kind of U-shaped pedicle nail Download PDFInfo
- Publication number
- CN105342684B CN105342684B CN201510744222.9A CN201510744222A CN105342684B CN 105342684 B CN105342684 B CN 105342684B CN 201510744222 A CN201510744222 A CN 201510744222A CN 105342684 B CN105342684 B CN 105342684B
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- Prior art keywords
- nail
- rod
- screw
- transverse opening
- type groove
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
- A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
- A61B17/862—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the periphery of the screw head
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
A kind of U-shaped pedicle nail of the present invention, including U-shaped nail, lock nut, closing piece and nail rod, the U-shaped nail is provided with screw division, screw division upper end is provided with nail seat, the nail seat side is provided with the U-type groove of insertion, U-type groove upper end is provided with female thread, lower end is respectively equipped with the transverse opening groove of insertion on its two side, the lock nut is provided with the external screw thread with the screw-internal thread fit, and be threaded onto in the female thread, lock nut upper end is provided with tooling hole, the closing piece is movably linked to the lower end of the lock nut, the nail rod is put into from U-type groove and goes in the transverse opening groove, it is characterized in that：The one side of the transverse opening groove or two sides are set to the inclined-plane of open-like shape, and with nail rod into two linear contact lays, for propping up the nail rod, the lower end of the closing piece is provided with lock body, the lock body transverse ends are respectively equipped with two voussoirs, by lock nut by the two voussoirs press-in nail rod of the lock body and the space of U-type groove, rod wedging is followed closely by described.
Description
Technical field
The present invention relates to orthopedic medical device field, especially a kind of U-shaped pedicle nail.
Background technology
Minimally Invasive Surgery is widely used in recent years, and application of the minimally invasive U-shaped pedicle nail in spinal operation is also more next
It is more, it is adaptable to treat the diseases such as thoracic and lumbar vertebral posterior short segment wound, tumor and unstable spine.Current minimally invasive U-shaped pedicle of vertebral arch
Nail, is mainly made up of U-shaped nail, locking jackscrew and nail rod.The locking mode of its nail rod, is the U-shaped nail seat by jackscrew with U-shaped nail
, when coupling mechanism force is larger, there is nail seat two side softened or support deformation in the screw-internal thread fit on two side and pressing pin rod
Defect, so as to cause to follow closely the possibility that rod loosens or exits, and, postoperative time return period is longer, and during this, human body needs
Activity, can make pedicle nail that prolonged fine motion occurs, and so as to simple jackscrew directly compresses mode, there is also loosening or even move back
The possibility of rod, and structural volume is larger, is unfavorable for the suture and treatment of otch.
The content of the invention
The invention discloses a kind of U-shaped pedicle nail, overcomes drawbacks described above, which mainly includes U-shaped nail, lock nut, closing piece
With nail rod, it is described it is U-shaped nail be provided with screw division, the screw division upper end is provided with nail seat, and the nail seat side is provided with the U-shaped of insertion
Groove, the U-type groove upper end are provided with female thread, and lower end is respectively equipped with transverse opening groove, the transverse opening groove on its two side
With the nail seat axis as axle, by two side port of the U-type groove, rotating Vortex is formed, and the lock nut is provided with and the female thread
The external screw thread of cooperation, and be threaded onto in the female thread, the lock nut upper end is provided with tooling hole, to connect external tool and rotate
The lock nut, the closing piece are movably linked to the lower end of the lock nut, and the nail rod is put into from U-type groove and goes to and described laterally opens
Mouth groove, it is characterised in that：The one side of the transverse opening groove or two sides are set to the inclined-plane towards U-type groove open-like shape, and with
Nail rod and makes the small semicircle of the nail rod be in U-type groove into two linear contact lays for propping up the nail rod, the closing piece
Lower end is provided with lock body, and the lock body transverse ends are respectively equipped with voussoir, and the two voussoirs press-in of the lock body is followed closely rod and U by lock nut
Between type groove sidewall, by nail rod wedging.The voussoir and the face that contacts of nail rod, be set to the nail seat axis be
Axle, the face of downward spiralization so as to remain and the nail rod linear contact lay.The upper end of the lock body is provided with screw rod, described
The light axle portion less than screw flight bottom footpath is provided between screw rod and the lock body, the lower end of the lock nut is provided with is matched somebody with somebody with the screw rod
The screwed hole of conjunction, is provided with cavity between the screwed hole upper end and the tooling hole, the screw rod is threaded through the screwed hole and is placed in institute
State in cavity, while the screwed hole is placed in the smooth axle portion, the screw thread and the external screw thread of the screwed hole of the lock nut are set
It is oppositely oriented, prevent during lock nut closing piece and freely deviate from for rotating.
A kind of U-shaped pedicle nail of the present invention, simple structure are easy to operate, employ screw press and coordinate wedge lock side
Formula, with bigger coupling mechanism force and locking power, therefore, steadiness and the safety of spinal operation are enhanced, so as to effectively carry
The success rate of high operation.
Description of the drawings：
Fig. 1 is a kind of schematic diagram of U-shaped the first embodiment of pedicle nail of the present invention；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the cross-sectional schematic of lock nut in Fig. 1；
Fig. 4 is the schematic diagram of closing piece in Fig. 1.
Fig. 5 is the upward view of Fig. 4；
Fig. 6 is a kind of schematic diagram of U-shaped second embodiment of pedicle nail of the present invention；
In accompanying drawing：1st, 5U sprigs, 2 lock nuts, 3 closing pieces, 4 nail rods, 6 lock-screws, 1-1,5-1 transverse opening groove, 1-2 are oblique
Face, 2-1 screwed holes, 2-2 cavitys, 3-1 lock bodies, 3-2 screw rods, 3-3 light axle portions, 3-4 voussoirs, 5-2 suspended walls, the 6-1 conical surfaces.
Embodiment：
Fig. 1 to Fig. 5 shows a kind of the first embodiment of U-shaped pedicle nail of the present invention.
The invention discloses a kind of U-shaped pedicle nail of self-locking, overcomes drawbacks described above, which mainly includes U-shaped nail 1, lock nut
2nd, closing piece 3 and nail rod 4, the U-shaped nail 1 are provided with screw division, and the screw division upper end is provided with nail seat, and the nail seat side is provided with to be passed through
Logical U-type groove, the U-type groove upper end are provided with female thread, and lower end is respectively equipped with transverse opening groove 1-1 on its two side, described
With the nail seat axis as axle, by two side port of the U-type groove, rotating Vortex is formed transverse opening groove 1-1, and the lock nut 2 sets
There is the external screw thread with the screw-internal thread fit, and be threaded onto in the female thread, 2 upper end of the lock nut is provided with tooling hole, to even
Connect external tool and rotate the lock nut 2, the closing piece 3 is movably linked to the lower end of the lock nut 2, and the nail rod 4 is from U-type groove
It is put into and goes in the transverse opening groove 1-1, it is characterised in that：The one side of the transverse opening groove 1-1 or two sides set
Be the inclined-plane 1-2 towards U-type groove open-like shape, and and the nail is made into two linear contact lays for propping up the nail rod 4 with nail rod
The small semicircle of rod 4 is in U-type groove, and the lower end of the closing piece is provided with lock body 3-1, and the lock body 3-1 transverse ends are respectively equipped with
Voussoir 3-4, mountain lock nut 2 are pressed into the two voussoir 3-4 of the lock body 3-1 simultaneously between nail rod and U-shaped groove sidewall, by the nail rod
4 lockings.The face that the voussoir 3-4 is contacted with the nail rod 4, is set to the nail seat axis as axle, the face of downward spiralization,
Which is made to remain and the nail rod linear contact lay.The upper end of the lock body 3-1 is provided with screw rod 3-2, the screw rod 3-2 and the lock
Light axle portion 3-3 less than the screw rod 3-2 core diameters of thread is provided between body 3-1, the lower end of the lock nut 2 is provided with and the screw rod 3-2
The screwed hole 2-1 of cooperation, is provided with cavity 2-2 between screwed hole 2-1 upper ends and the tooling hole, the screw rod 3-2 is threaded through spiral shell
Pit 2-1 is placed in the cavity 2-2, while the screwed hole 2-1 is placed in smooth axle portion 3-3, arranges the screwed hole 2-1
Screw thread and the external thread rotary to conversely, preventing closing piece 3 from coming off from mountain during for rotating lock nut 2.
Fig. 6 shows a kind of second embodiment of U-shaped pedicle nail of the present invention.
A kind of second embodiment of U-shaped pedicle nail of the present invention, mainly including U-shaped nail 5 and nail rod 4, the U-shaped nail
5 lower ends are provided with screw division, and the upper end of the screw division is provided with nail seat, and the nail seat side is provided with the U-type groove of insertion, described U-shaped
Transverse opening groove 5-1, and the rotating Vortex by two side port of U-type groove with the nail seat axis as axle are respectively equipped with groove two side
Form, the transverse opening groove 5-1 forms two suspended wall 5-2 with the upper end of the nail seat, it is characterised in that：A kind of U-shaped pedicle of vertebral arch
Nail also includes that lock-screw 6, the one side of the transverse opening groove 5-1 or two sides are set to the inclined-plane towards U-type groove open-like shape,
And be fitted close with the nail rod 4 into two linear contact lays, or the shape of the transverse opening groove 5-1 bottom lands with nail rod, for supporting
Nail rod 4 is stated in residence, and on two suspended wall 5-2, the outside of the nail rod 4 is respectively provided with the screw hole of up/down perforation suspended wall 5-2, the horizontal stroke
The hole coaxial with the screw hole is respectively equipped with the downside of open slot 5-1,6 upper end of the lock-screw is provided with external screw thread and institute
Screw hole cooperation is stated, external screw thread lower end is provided with conical surface 6-1, and conical surface lower end is provided with bar, during use, the nail rod 4 is placed in described
In transverse opening groove 5-1, take two pieces of lock-screws 6 and screw in the screw hole respectively, the bar inserts the hole, the cone
Face coordinates the inclined-plane or bottom land of the transverse opening groove 5-1 to lock the nail rod 4.The locking mechanism is more directly more effectively solved
The pine for following closely rod of having determined moves back problem.
Claims (5)
1. a kind of U-shaped pedicle nail, mainly including U-shaped nail (1), lock nut (2), closing piece (3) and nail rod (4), the U-shaped nail (1)
Screw division is provided with, the screw division upper end is provided with nail seat, and the nail seat side is provided with the U-type groove of insertion, and the U-type groove upper end sets
There is female thread, lower end is respectively equipped with transverse opening groove (1-1) on its two side, and the transverse opening groove (1-1) is with the nail
Seat axis is axle, and by two side port of the U-type groove, rotating Vortex is formed, and the lock nut (2) is provided with and the screw-internal thread fit
External screw thread, and be threaded onto in the female thread, lock nut (2) upper end is provided with tooling hole, and the closing piece (3) is movably linked to institute
The lower end of lock nut (2) is stated, the nail rod (4) is placed in the transverse opening groove (1-1), it is characterised in that：The transverse opening groove
(1-1) one side or two sides is set to towards the open inclined-plane of U-type groove (1-2), with nail rod into two linear contact lays, and is made described
The small semicircle of nail rod (4) is in U-type groove, and the lower end of the closing piece is provided with lock body (3-1), lock body (3-1) transverse ends
Voussoir (3-4) is respectively equipped with, by lock nut (2) by two voussoirs (3-4) of the lock body (3-1), while being pressed into nail rod and U-type groove side
Between wall, by nail rod (4) locking.
2. a kind of U-shaped pedicle nail according to claim 1, it is characterised in that：The voussoir (3-4) and nail rod (4)
The face of contact, is set to the nail seat axis as axle, the face of downward spiralization so as to remains and connects with the nail rod line
Touch.
3. a kind of U-shaped pedicle nail according to claim 1, it is characterised in that：The upper end of the lock body (3-1) is provided with screw rod
(3-2) the light axle portion (3-3) less than screw rod (3-2) core diameter of thread, is provided between the screw rod (3-2) and the lock body (3-1),
The lower end of the lock nut (2) is provided with the screwed hole (2-1) coordinated with the screw rod (3-2), the screwed hole (2-1) upper end with it is described
Cavity (2-2) is provided between tooling hole, the screw rod (3-2) is threaded through the screwed hole (2-1) and is placed in the cavity (2-2),
The screwed hole (2-1) is placed in the smooth axle portion (3-3) simultaneously.
4. a kind of U-shaped pedicle nail according to claim 3, it is characterised in that：The screwed hole (2-1) of the lock nut (2)
Screw thread is oppositely oriented with the external screw thread of the lock nut (2).
5. a kind of U-shaped pedicle nail, mainly including U-shaped nail (5) and nail rod (4), U-shaped nail (5) lower end is provided with screw division, spiral shell
The upper end in nail portion is provided with nail seat, and nail seat side is provided with the U-type groove of insertion, and transverse opening groove (5- is respectively equipped with U-type groove two side
1), and with nail seat axis as axle the rotating Vortex by two side port of U-type groove is formed, the upper end of transverse opening groove (5-1) and nail seat
Form two suspended walls (5-2), it is characterised in that：A kind of U-shaped pedicle nail also includes lock-screw (6), the transverse opening groove (5-
1) one side or two sides is set to towards the open inclined-plane of U-type groove, or the shape of transverse opening groove (5-1) bottom land and nail rod
(4) be fitted close, and two linear contact lays formed with nail rod (4), be respectively provided with two suspended walls (5-2) on the outside of nail rod (4)
The screw hole of lower insertion suspended wall (5-2), is respectively equipped with the hole coaxial with screw hole, locking screw on the downside of transverse opening groove (5-1)
Nail (6) upper end is provided with external screw thread and is coordinated with the screw hole, and external screw thread lower end is provided with the conical surface (6-1), and conical surface lower end is provided with bar, nail
Rod (4) is placed in transverse opening groove (5-1), and lock-screw (6) screws in the screw hole respectively, and the bar inserts the hole, institute
Rod (4) locking will be followed closely in the inclined-plane or bottom land for stating transverse opening groove (5-1) described in cone match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510744222.9A CN105342684B (en) | 2015-10-29 | 2015-10-29 | A kind of U-shaped pedicle nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510744222.9A CN105342684B (en) | 2015-10-29 | 2015-10-29 | A kind of U-shaped pedicle nail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105342684A CN105342684A (en) | 2016-02-24 |
| CN105342684B true CN105342684B (en) | 2017-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510744222.9A Active CN105342684B (en) | 2015-10-29 | 2015-10-29 | A kind of U-shaped pedicle nail |
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| CN (1) | CN105342684B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2398981Y (en) * | 1999-12-15 | 2000-10-04 | 邹德威 | Reduction fixed bone orthopedic appts. |
| WO2007041702A2 (en) * | 2005-10-04 | 2007-04-12 | Alphaspine, Inc. | Pedicle screw system with provisional locking aspects |
| CN201185960Y (en) * | 2008-04-25 | 2009-01-28 | 刘伟强 | Medical vertebral pedicle screw nail mechanism |
| US20120303072A1 (en) * | 2011-05-26 | 2012-11-29 | Eisertech, Llc | Bone screw system with connecting portion |
| CN203647452U (en) * | 2013-12-09 | 2014-06-18 | 嘉兴德康医疗器械有限公司 | Vertebral pedicle compressing and locking device of spine screw-rod system |
| CN205181460U (en) * | 2015-10-29 | 2016-04-27 | 山东航维骨科医疗器械股份有限公司 | U type pedicle of vertebral arch nail |
-
2015
- 2015-10-29 CN CN201510744222.9A patent/CN105342684B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2398981Y (en) * | 1999-12-15 | 2000-10-04 | 邹德威 | Reduction fixed bone orthopedic appts. |
| WO2007041702A2 (en) * | 2005-10-04 | 2007-04-12 | Alphaspine, Inc. | Pedicle screw system with provisional locking aspects |
| CN201185960Y (en) * | 2008-04-25 | 2009-01-28 | 刘伟强 | Medical vertebral pedicle screw nail mechanism |
| US20120303072A1 (en) * | 2011-05-26 | 2012-11-29 | Eisertech, Llc | Bone screw system with connecting portion |
| CN203647452U (en) * | 2013-12-09 | 2014-06-18 | 嘉兴德康医疗器械有限公司 | Vertebral pedicle compressing and locking device of spine screw-rod system |
| CN205181460U (en) * | 2015-10-29 | 2016-04-27 | 山东航维骨科医疗器械股份有限公司 | U type pedicle of vertebral arch nail |
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| Publication number | Publication date |
|---|---|
| CN105342684A (en) | 2016-02-24 |
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