CN209450643U - A kind of anticreep pedicle nail - Google Patents
A kind of anticreep pedicle nail Download PDFInfo
- Publication number
- CN209450643U CN209450643U CN201822157977.0U CN201822157977U CN209450643U CN 209450643 U CN209450643 U CN 209450643U CN 201822157977 U CN201822157977 U CN 201822157977U CN 209450643 U CN209450643 U CN 209450643U
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- attachment base
- anticreep
- plug screw
- card slot
- hold
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Abstract
The utility model discloses a kind of anticreep pedicle nails, are related to the field of medical instrument technology.Including screw body, the top of screw body is equipped with bulb, and is fastenedly connected with nail seat by bulb, and the top of nail seat is equipped with countersunk head slot, and the outside of nail seat is connected with attachment base.The anticreep pedicle nail, by the way that attachment base is arranged, plug screw, groove, card slot and card column, it realizes with anti-loose effect, assembly is simple, stable connection and practical advantage, plug screw is interted by groove into attachment base, pass through the threaded connection of plug screw and attachment base, downward precession, and so that card column is coincide and snap onto card slot, two kinds of connection types are used simultaneously, it connect attachment base closely with plug screw stronger, reliably, it can make what hold-down bars was completed to be adjacent to, fastening, ensure that hold-down bars anticreep pedicle of vertebral arch that is fixed on firm always nails on, and simplify installation step, it is easy to operate, meet the needs of patient's safe handling for a long time.
Description
Technical field
The utility model relates to the field of medical instrument technology, specially a kind of anticreep pedicle nail.
Background technique
Backbone is the major bearing structures of human body, and structure is complicated, has weight bearing, keeps total balance of the body, movement, protection spinal cord
And the function of internal organ, extremely important effect is played in the physiological activity of human normal, when backbone occur it is more serious
When fracturing or the lesions such as tumor of spine occur, the operation of spine structure reconstruction need to be often carried out, to stablize backbone, maintains daily physiology
The application of activity or weight bearing, internal fixation of spine technology has had the history of decades, it is considered that truly intraspinal
It is fixed to start from the 1950s, PaulHarrington has developed in the first way of escape to correct scoliosis and remaining orthopedic
Fixed system, that is, Harrington system, and reported clinical applications result in 1962, with spinal biomechanics research and
The development of material science, internal fixation of spine technology achieve huge advance, backbone degenerative disease, tumor of spine, wound with
And it is widely applied in the operative treatments such as Spondylitis.
Currently, the art formula that spinal reconstruction uses is more, but strongest internal fixation formula is generally pedicle nail bar system
Interior fixation, existing pedicle nail bar system by hold-down bars, enter bone screws, locking head, connecting plate and locking plug screw constitute, but its
Assembling process is cumbersome, and is limited by its reasons in structure, human body be vibrated or the continuous contractile motion of muscle under, can also send out
Raw locking head screw locks the risk that plug screw is loosened, fallen off, and further results in locking head or hold-down bars, connecting plate fall off,
The locking plug screw or locking head screw, locking head, hold-down bars and connecting plate to fall off easily causes other illnesss in human body, has pole
Big security risk is not able to satisfy the needs that patient's long-term safety uses.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model provides a kind of anticreep pedicle nail, has with anti-loose effect
Fruit, assembly be simple, stable connection and it is practical the advantages that, solve the components such as existing locking plug screw, locking head and easily loosen,
Assemble inconvenient problem.
(2) technical solution
There is simple anti-loose effect, assembly, stable connection and practical purpose, the utility model for realization is above-mentioned
Provide the following technical solutions: a kind of anticreep pedicle nail, including screw body, the top of the screw body are equipped with bulb, and
It is fastenedly connected with nail seat by bulb, the top of the nail seat is equipped with countersunk head slot, and the outside of the nail seat is connected with attachment base, institute
The front for stating attachment base is equipped with U-shaped opening, and the inside of the attachment base is equipped with hold-down bars, and the top of the hold-down bars is equipped with spiral shell
Plug, the top of the plug screw are equipped with interior hexagonal blind hole, and the upper end inner wall of the attachment base is equipped with groove, and the bottom of the groove is set
There is card slot, the both ends of the plug screw are equipped with card column, the plug screw and attachment base and are clamped by card slot and card column.
The technical program is advanced optimized, the attachment base is hollow cylinder, and the bottom of the attachment base is equipped with through-hole, institute
The upper end for stating screw body passes through through-hole and is fastenedly connected with nail seat, and the outer diameter of the nail seat is less than the internal diameter of attachment base, and model
It is trapped among between 3mm-5mm.
The technical program is advanced optimized, the hold-down bars passes through U-shaped opening and touches with the bottom connection of U-shaped opening, institute
The width for stating U-shaped opening is greater than the diameter of hold-down bars, and range is between 2mm-4mm.
The technical program is advanced optimized, the bottom of the U-shaped opening and the top of nail seat are concordant, the bottom of the hold-down bars
It is in contact at the top of portion and nail seat.
Advanced optimize the technical program, the upper end outer wall of the plug screw is equipped with the first screw thread layer, the attachment base it is upper
Inner wall is held to be equipped with the second screw thread layer, the plug screw is threadedly coupled by the first screw thread layer with the second screw thread layer with attachment base.
The technical program is advanced optimized, the groove is equal and interconnected with the width of card slot, the groove and card
The width of slot is greater than the diameter of card column, and range is between 2mm-5mm.
The technical program is advanced optimized, the card slot is set to the left and right sides of attachment base and is dislocation arrangement, and its
In a card slot upwardly extended along the circumferential direction of attachment base, another card slot is extended downwardly along the circumferential direction of attachment base.
(3) beneficial effect
Compared with prior art, the utility model provides a kind of anticreep pedicle nail, have it is following the utility model has the advantages that
The anticreep pedicle nail is realized by setting attachment base, plug screw, groove, card slot and card column with anti-loose effect
Fruit, assembly be simple, stable connection and practical advantage, and plug screw is interted by groove into attachment base, by plug screw and
The threaded connection of attachment base, downward precession, and so that card column is coincide and snap onto card slot, while using two kinds of connection types, make to connect
Joint chair closely connect stronger, reliable with plug screw, can make what hold-down bars was completed be adjacent to, fasten, it is ensured that hold-down bars begins
The firm anticreep pedicle of vertebral arch that is fixed on nails on eventually, and simplifies installation step, easy to operate, meets patient's safety for a long time
The needs used.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the main view of the utility model；
Fig. 3 is the attachment base left view of the utility model；
Fig. 4 is the attachment base top view of the utility model.
In figure: 1, screw body；2, bulb；3, nail seat；4, countersunk head slot；5, attachment base；6, U-shaped opening；7, hold-down bars；8,
Plug screw；9, interior hexagonal blind hole；10, groove；11, card slot；12, card column；13, through-hole；14, the first screw thread layer；15, the second screw thread
Layer.
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, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-4 is please referred to, the utility model discloses a kind of anticreep pedicle nail, including screw body 1, screw bodies 1
Top be equipped with bulb 2, and nail seat 3 is fastenedly connected with by bulb 2, the top of nail seat 3 is equipped with countersunk head slot 4, the outside of nail seat 3
It is connected with attachment base 5, the front of attachment base 5 is equipped with U-shaped opening 6, and the inside of attachment base 5 is equipped with hold-down bars 7, the top of hold-down bars 7
Portion is equipped with plug screw 8, and the top of plug screw 8 is equipped with interior hexagonal blind hole 9, and the upper end inner wall of attachment base 5 is equipped with groove 10, the bottom of groove 10
Portion is equipped with card slot 11, and the both ends of plug screw 8 are equipped with card column 12, plug screw 8 and attachment base 5 and are clamped by card slot 11 and card column 12, passed through
Attachment base 5, plug screw 8, groove 10, card slot 11 and card column 12 are set, realized with anti-loose effect, assembly is simple, connection is steady
Plug screw 8 is interted by groove 10 into attachment base 5, passes through the screw thread of plug screw 8 and attachment base 5 by fixed and practical advantage
Connection, downward precession, and so that card column 12 is coincide and snap onto card slot 11, while using two kinds of connection types, make attachment base 5 and spiral shell
Plug 8 closely connects stronger, reliable, can make what hold-down bars 7 was completed be adjacent to, fasten, it is ensured that hold-down bars 7 consolidates always
The anticreep pedicle of vertebral arch that is fixed on nail on, and simplify installation step, it is easy to operate, meet patient's safe handling for a long time
It needs.
Specifically, attachment base 5 is hollow cylinder, the bottom of attachment base 5 is equipped with through-hole 13, and the upper end of screw body 1 passes through
Through-hole 13 is simultaneously fastenedly connected with nail seat 3, and the outer diameter of nail seat 3 is less than the internal diameter of attachment base 5, and range is between 3mm-5mm.
Specifically, hold-down bars 7 passes through U-shaped opening 6 and touches with the bottom connection of U-shaped opening 6, the width of U-shaped opening 6 is greater than
The diameter of hold-down bars 7, and range is convenient for placing hold-down bars 7 between 2mm-4mm.
Specifically, the bottom of U-shaped opening 6 is concordant with the top of nail seat 3, the bottom of hold-down bars 7 connects with the top of nail seat 3
Touching enables hold-down bars 7 to be locked by the fastening of plug screw 8.
Specifically, the upper end outer wall of plug screw 8 is equipped with the first screw thread layer 14, the upper end inner wall of attachment base 5 is equipped with the second screw thread
Layer 15, plug screw 8 are threadedly coupled by the first screw thread layer 14 with the second screw thread layer 15 with attachment base 5.
Specifically, groove 10 is equal and interconnected with the width of card slot 11, card column 12 is enable smoothly to enter card slot 11
Interior, the width of groove 10 and card slot 11 is greater than the diameter of card column 12, and range is between 2mm-5mm, can avoid card column 12 with it is recessed
Slot 10, the spacing of card slot 11 are too small, easily stuck.
Specifically, card slot 11 is set to the left and right sides of attachment base 5 and is dislocation arrangement, and one of card slot 11 is along even
The circumferential direction of joint chair 5 upwardly extends, another card slot 11 is extended downwardly along the circumferential direction of attachment base 5, is connected with this to increase
The connection type of joint chair 5 and plug screw 8 keeps connection more firm.
When in use, first nail seat 3 is put into attachment base 5 and is fastenedly connected with screw body 1, be then placed in hold-down bars
7, then plug screw 8 is interted by groove 10 into attachment base 5, by the threaded connection of plug screw 8 and attachment base 5, downward precession, and
Make card column 12 coincide to snap onto card slot 11, be close to the bottom of plug screw 8 and the top of hold-down bars 7, while using two kinds of connections
Mode connect attachment base 5 closely with plug screw 8 stronger, reliable, can make what hold-down bars 7 was completed be adjacent to, fasten, really
It has protected the anticreep pedicle of vertebral arch that is fixed on firm always of hold-down bars 7 to nail on, and has simplified installation step, it is easy to operate, meet
The needs of patient's safe handling for a long time.
In conclusion the anticreep pedicle nail, by the way that attachment base 5, plug screw 8, groove 10, card slot 11 and card column 12 is arranged,
Realizing has the advantages that anti-loose effect, assembly simple, stable connection and practical, and plug screw 8 is interted by groove 10
Into in attachment base 5, by the threaded connection of plug screw 8 and attachment base 5, downward precession, and so that card column 12 is coincide and snap onto card slot 11
It is interior, while two kinds of connection types are used, it connect attachment base 5 closely with plug screw 8 stronger, reliable, 7 quilt of hold-down bars can be made
That completes is adjacent to, fastens, it is ensured that the anticreep pedicle of vertebral arch that is fixed on firm always of hold-down bars 7 nails on, and simplifies assembly
Step, it is easy to operate, meet the needs of patient's safe handling for a long time.
It should be noted that, in this document, such as the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (7)
1. a kind of anticreep pedicle nail, including screw body (1), it is characterised in that: the top of the screw body (1) is equipped with ball
Head (2), and be fastenedly connected with nail seat (3) by bulb (2), the top of the nail seat (3) is equipped with countersunk head slot (4), the nail seat
(3) outside is connected with attachment base (5), and the front of the attachment base (5) is equipped with U-shaped opening (6), the attachment base (5) it is interior
Portion is equipped with hold-down bars (7), and the top of the hold-down bars (7) is equipped with plug screw (8), and it is blind that the top of the plug screw (8) is equipped with interior hexagonal
The upper end inner wall in hole (9), the attachment base (5) is equipped with groove (10), and the bottom of the groove (10) is equipped with card slot (11), described
The both ends of plug screw (8) are equipped with card column (12), and the plug screw (8) and attachment base (5) are clamped by card slot (11) and card column (12).
2. a kind of anticreep pedicle nail according to claim 1, it is characterised in that: the attachment base (5) is hollow cylinder,
The bottom of the attachment base (5) is equipped with through-hole (13), the upper end of the screw body (1) pass through through-hole (13) and with nail seat (3)
It is fastenedly connected, the outer diameter of the nail seat (3) is less than the internal diameter of attachment base (5), and range is between 3mm-5mm.
3. a kind of anticreep pedicle nail according to claim 1, it is characterised in that: the hold-down bars (7) passes through U-shaped opening
(6) and with the bottom connection of U-shaped opening (6) it touches, the width of the U-shaped opening (6) is greater than the diameter of hold-down bars (7), and range
Between 2mm-4mm.
4. a kind of anticreep pedicle nail according to claim 1, it is characterised in that: the bottom of the U-shaped opening (6) and nail
The top of seat (3) is concordant, is in contact at the top of the bottom and nail seat (3) of the hold-down bars (7).
5. a kind of anticreep pedicle nail according to claim 1, it is characterised in that: the upper end outer wall of the plug screw (8) is set
Have the first screw thread layer (14), the upper end inner wall of the attachment base (5) is equipped with the second screw thread layer (15), the plug screw (8) with connect
Seat (5) is threadedly coupled by the first screw thread layer (14) with the second screw thread layer (15).
6. a kind of anticreep pedicle nail according to claim 1, it is characterised in that: the groove (10) and card slot (11)
Width is equal and interconnected, and the width of the groove (10) and card slot (11) is greater than the diameter of card column (12), and range exists
Between 2mm-5mm.
7. a kind of anticreep pedicle nail according to claim 1, it is characterised in that: the card slot (11) is set to attachment base
(5) the left and right sides is simultaneously dislocation arrangement, and one of card slot (11) is upwardly extended along the circumferential direction of attachment base (5), separately
One card slot (11) extends downwardly along the circumferential direction of attachment base (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822157977.0U CN209450643U (en) | 2018-12-21 | 2018-12-21 | A kind of anticreep pedicle nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822157977.0U CN209450643U (en) | 2018-12-21 | 2018-12-21 | A kind of anticreep pedicle nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209450643U true CN209450643U (en) | 2019-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822157977.0U Active CN209450643U (en) | 2018-12-21 | 2018-12-21 | A kind of anticreep pedicle nail |
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| Country | Link |
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| CN (1) | CN209450643U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111728683A (en) * | 2020-07-15 | 2020-10-02 | 四川大学华西医院 | Centrum embedded fixing device |
-
2018
- 2018-12-21 CN CN201822157977.0U patent/CN209450643U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111728683A (en) * | 2020-07-15 | 2020-10-02 | 四川大学华西医院 | Centrum embedded fixing device |
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