CN204708968U - Nest mortar rail pedicle screw and nest mortar rail chain type replacement and fixation dynamic pedicle screw system - Google Patents
Nest mortar rail pedicle screw and nest mortar rail chain type replacement and fixation dynamic pedicle screw system Download PDFInfo
- Publication number
- CN204708968U CN204708968U CN201520221545.5U CN201520221545U CN204708968U CN 204708968 U CN204708968 U CN 204708968U CN 201520221545 U CN201520221545 U CN 201520221545U CN 204708968 U CN204708968 U CN 204708968U
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- rail
- pedicle screw
- sidewall
- roof
- nest mortar
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Abstract
This utility model discloses a kind of nest mortar rail pedicle screw, and it comprises the hold-doun nut that holder, button and elasticity compress described button, the through hole that described holder has annular sidewall and limited by described annular sidewall; The top of described annular sidewall is provided with a pair U-type groove diametrically; The limited step be positioned at below described U-type groove is extended in the medial wall, bottom of described annular sidewall, and described limited step is limited jointly by the first roof and the first side wall that is connected with the first roof; Described button comprises screw rod and is arranged on the spherical head of described screw tip, the Lower Half of described head forms a pair nest mortar rail diametrically, and described each nest mortar rail limits jointly by the second roof with from the second sidewall that this second roof extends downward bottom this head; Described second roof and described first roof up and down against, described the first side wall and the second sidewall are arc surfaced sidewall, and form gap between described the first side wall and the second sidewall.
Description
Technical field
This utility model relates to spinal fusion and non-fused technique for fixing field, particularly relates to a kind of nest mortar rail pedicle screw and nest mortar rail chain type replacement and fixation dynamic pedicle screw system.
Background technology
Spinal stabilization operation is the problem that all spinal surgeries all need to consider at present, and in order to ensure the stability of spinal column, orthopaedics-spinal surgery doctor has to sacrifice spinal segments movable function and adopt spinal fusion fixing operation.But patient becomes straight neck or straight breast or straight waist and produces discomfort after spinal fusion is fixing, be become another morbid state from a kind of morbid state after all, therefore spinal column non-fused fixes emphasis and the focus that namely keep spinal column to have certain mobility fixing is the research of domestic and international spinal surgery always.
The pedicle screw system that postoperative patient spinal column can be made to realize limited activity is exactly a kind of spinal column non-fused technique for fixing.The reliability that existing dynamic pedicle screw or dynamic rod non-fused system require at the sagittal plane to spinal segments, coronalplane combined activities degree is not high, lacks design and the structure of fatigue resistance.The flexibility also having part screw system to lack power is accepted, and lacks the inhibitory action to shock, concussion etc.
Utility model content
The purpose of this utility model is to provide a kind of nest mortar rail pedicle screw and nest mortar rail chain type Flexible Reset fixes dynamic pedicle screw system, makes the spinal column of postoperative patient obtain elasticity and dynamically fix, is more conducive to the post-operative recovery of patient's spinal column.
For reaching above technical purpose, the technical solution adopted in the utility model is as follows:
A kind of nest mortar rail pedicle screw, the button that it comprises holder, pivotable is fixed on this retainer bottom and elasticity compress the hold-doun nut of described button, wherein,
The through hole that described holder has annular sidewall and limited by described annular sidewall, the top of described annular sidewall is provided with a pair U-type groove diametrically, the limited step be positioned at below described U-type groove is extended in the medial wall, bottom of described annular sidewall, and described limited step is limited jointly by the first roof and the first side wall that is connected with the first roof;
Described button comprises screw rod and is arranged on the spherical head of described screw tip, the Lower Half of described head forms a pair nest mortar rail diametrically, and described each nest mortar rail limits jointly by the second roof with from the second sidewall that this second roof extends downward bottom this head;
Described second roof and described first roof up and down against, described the first side wall and the second sidewall are arc surfaced sidewall, and form gap between described the first side wall and the second sidewall.
For realizing the purpose of this utility model, can make described button adjustable in limited range, the span of described the first side wall is less than the span of the second sidewall.
The implementation of described nest mortar rail has the following two kinds:
One, described head caves inward from its body and forms described second roof and the second sidewall.
Its two, described head extends described second roof and the second sidewall from its body.
For producing flexible fastening and/or alleviating the impulsive force of moving and producing, described first roof and the first side wall surface are provided with elastic cord breaker.Or described second roof and the second sidewall surfaces are provided with elastic cord breaker.
Further, described nest mortar rail pedicle screw also comprises the resilient infill being arranged on described holder inside.
A kind of nest mortar rail chain type replacement and fixation dynamic pedicle screw system, it comprises some foregoing nest mortar rail pedicle screws and the Orthopedic rod being connected multiple described nest mortar rail pedicle screw, and described Orthopedic rod is fastened in the U-type groove of described each holder.
Further, described pedicle screw system also comprises the resilient infill being arranged on described nest mortar rail pedicle screw inside, and described resilient infill comprises the adjusting pad of the top of the supporting pad be arranged on below described Orthopedic rod and the head being arranged on described button.
Particularly, described supporting pad is provided with the groove axially coordinated with described Orthopedic rod.
Selectively, described adjusting pad is made up of some wave washers.
Selectively, described resilient infill is one-body molded.
Compared with prior art, this utility model has following Advantageous Effects:
(1) nest mortar rail chain type replacement and fixation dynamic pedicle screw system of the present utility model, by being clasped and relative motion between the limited step that is arranged on holder medial wall and the nest mortar rail being arranged on button head surface, realize the limited adjustment of button, structure is simple, stressing conditions is clear and definite, and this fit structure good stability, use procedure safety is high, simultaneously because structure is simple, production and processing is convenient;
(2) nest mortar rail chain type replacement and fixation dynamic pedicle screw system of the present utility model, space between Orthopedic rod and button is filled with resilient infill, can by the shape of this resilient infill of adjustment and material, manufacture out the pedicle screw system with different adjusting range and elastic stress, realize personalized customization, to adapt to the operation needs of different patient;
(3) nest mortar rail chain type replacement and fixation dynamic pedicle screw system of the present utility model, utilize being clasped of described limited step and nest mortar rail, and the restriction of resilient infill, progressively reconstruction and the maintenance of patient's restoring backbone flexible fastening postcentrum sections mobility can be realized, can also control the hyperkinesia of postoperative vertebral body sections.
Accompanying drawing explanation
Fig. 1 is the perspective view of nest mortar rail pedicle screw of the present utility model.
Fig. 2 is the stereochemical structure decomposing schematic representation of Fig. 1.
Fig. 3 is the sectional view in the a-a direction of Fig. 1.
Fig. 4 is the sectional view in the b-b direction of Fig. 1.
Fig. 5 is the sectional structure enlarged drawing of holder in Fig. 3.
Fig. 6 is the sectional structure enlarged drawing of holder in Fig. 4.
Fig. 7 is the partial enlarged drawing of the sectional structure of button in Fig. 3.
Fig. 8 is the movable scope schematic diagram of button of nest mortar rail pedicle screw of the present utility model.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail.
With reference to figure 1-3, comprise holder 1 according to the nest mortar rail pedicle screw of this utility model embodiment, pivotable is fixed on the button 2 bottom this holder 1, the resilient infill 3 being filled in described holder 1 inside and screw lock at the top of described holder 1 to compress the hold-doun nut (not shown) of described button 2.
With reference to figure 2 ~ 6, the through hole that described holder 1 has annular sidewall 11 and limited by this annular sidewall 11, described through hole has top end opening 12 and bottom opening 13; A pair U-type groove 14 (Fig. 2 and Fig. 6) is diametrically formed downwards from the edge of described top end opening 12 along described annular sidewall 11; Extend the limited step 15 of the below being positioned at described U-type groove 14 for a pair from the medial wall of the annular sidewall 11 near described bottom opening 13, described limited step 15 is formed (Fig. 5 and Fig. 6) by the first roof 151 and the first side wall 152.
With reference to figure 2 ~ 4 and Fig. 7, described button 2 comprises screw rod 22 and is arranged on the spherical head 21 on described screw rod 22 top, the latter half of described head 21 forms the nest mortar rail 211 that can mate with described limited step 15 buckle for a pair, particularly, as shown in Figure 7, the body of described head 21 caves inward formation second roof 2111 and the second sidewall 2112 of extending downward bottom this head 21, described nest mortar rail 211 by the second roof 2111 and the second sidewall 2112 jointly formed by.Selectively, the body of this head 21 also can stretch out and form described second roof and extend to the second sidewall (not shown) bottom head 21.Further, the top of described head 21 also offers and gets nail 212 for what mount and dismount button.
With further reference to Fig. 3, Fig. 5 and Fig. 7, described button 2 inserts from the top end opening 12 of described holder 1 thus the screw rod 22 of button 2 is stretched out from its bottom opening 13, and described head 21 is then buckled in the inside of holder 1.Particularly, described head 21 is mated with described limited step 15 buckle by its nest mortar rail 211, more specifically, the second roof 2111 of described nest mortar rail 211 leans with the first roof about 151 of described limited step 15, and forms gap between described the first side wall 152 and the second sidewall 2112.Preferably, second sidewall 2112 of described nest mortar rail 211 is formed the cambered surface of coincideing with the radian of its head 21 body sphere, and, the first side wall 152 of described limited step 15 is also formed the cambered surface of coincideing with described second sidewall 2112 radian, wherein, the span of described the first side wall 152 is less than the span of the second sidewall 2112; When described the first side wall 152 is pressed close to mutually with the second sidewall 2112, between described holder 1 and button 2, there is round and smooth relative motion space.For reducing impulsive force between described limited step 15 and nest mortar rail 211 and frictional dissipation, cushion 16 (Fig. 5) is provided with at described first roof 151 and the first side wall 152 surface, or, be provided with cushion (not shown) on the surface of described second roof 2111 and the second sidewall 2112.
Nest mortar rail chain type replacement and fixation dynamic pedicle screw system of the present utility model comprises several above-described nest mortar rail pedicle screws and connects the Orthopedic rod of multiple described nest mortar rail pedicle screw.Described nest mortar rail pedicle screw can squeeze into the focus of the spinal column of patient, and stablizes the relative position of described multiple nest mortar rail pedicle screw by described Orthopedic rod, to help restoring backbone and to fix.
The Orthopedic rod of described connection multiple nest mortar rail pedicle screw is fastened in a pair U-type groove 14 of each nest mortar rail pedicle screw, and the hold-doun nut of screw lock at described holder 1 top directly compresses with described Orthopedic rod.Nest mortar rail pedicle screw system of the present utility model also comprises the resilient infill 3 in the space that is filled between described Orthopedic rod and button 2.
With reference to figure 2 ~ 4, described resilient infill 3 comprises the adjusting pad 32 above the supporting pad 31 be arranged on below described Orthopedic rod and the head 21 being arranged on described button 2.
In the present embodiment, the top of described supporting pad 31 is offered can the groove on Orthopedic rod surface described in support, and this groove is communicated with described U-type groove 14; Selectively, described supporting pad 31 also can be made up of the uniform elastomeric material of a thickness, and through bending or compacting, being formed can the groove (not shown) of Orthopedic rod described in support.Described adjusting pad 32 is made up of some wave washer laminations, or be made up of the elastomeric material of a cylindricality, for coordinating the mobilizable functional characteristic of adjustable of described button 2, the elasticity of described adjusting pad 32 should be slightly larger than described supporting pad 31.But described supporting pad 31 and adjusting pad 32 also can be one-body molded.
With reference to figure 8, utilize being clasped of described limited step 15 and nest mortar rail 211, described button 2 can be made to swing in certain angular range in the bottom of holder 1 (with the signal of the hunting range of the axis 23 of button), further, the elasticity of described resilient infill 3 compresses effect and limits the movable degree of this button 2, to realize the dynamically fixing effect of this utility model nest mortar rail chain type replacement and fixation dynamic pedicle screw system better.
In sum, this utility model nest mortar rail pedicle screw and reasonable, stressed clear and definite, the good stability of nest mortar rail chain type replacement and fixation dynamic pedicle screw system structure design, the suitability are wide, effective assisting patient post-operative recovery.
Above-described embodiment is this utility model preferably embodiment; but be not merely restricted to the described embodiments; change, the modification done under other any does not deviate from spirit of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be all included within protection domain of the present utility model.
Claims (12)
1. a nest mortar rail pedicle screw, the button that it comprises holder, pivotable is fixed on this retainer bottom and elasticity compress the hold-doun nut of described button, it is characterized in that:
The through hole that described holder has annular sidewall and limited by described annular sidewall, the top of described annular sidewall is provided with a pair U-type groove diametrically, the limited step be positioned at below described U-type groove is extended in the medial wall, bottom of described annular sidewall, and described limited step is limited jointly by the first roof and the first side wall that is connected with the first roof;
Described button comprises screw rod and is arranged on the spherical head of described screw tip, the Lower Half of described head forms a pair nest mortar rail diametrically, and described each nest mortar rail limits jointly by the second roof with from the second sidewall that this second roof extends downward bottom this head;
Described second roof and described first roof up and down against, described the first side wall and the second sidewall are arc surfaced sidewall, and form gap between described the first side wall and the second sidewall.
2. nest mortar rail pedicle screw as claimed in claim 1, is characterized in that: the span of described the first side wall is less than the span of the second sidewall.
3. nest mortar rail pedicle screw as claimed in claim 2, is characterized in that: described head caves inward from its body and forms described second roof and the second sidewall.
4. nest mortar rail pedicle screw as claimed in claim 2, is characterized in that: described head extends described second roof and the second sidewall from its body.
5. the nest mortar rail pedicle screw as described in claim 3 or 4, is characterized in that: described first roof and the first side wall surface are provided with cushion.
6. the nest mortar rail pedicle screw as described in claim 3 or 4, is characterized in that: described second roof and the second sidewall surfaces are provided with cushion.
7. nest mortar rail pedicle screw as claimed in claim 1, is characterized in that: it also comprises the resilient infill being arranged on described holder inside.
8. a nest mortar rail chain type replacement and fixation dynamic pedicle screw system, it is characterized in that: it comprises some nest mortar rail pedicle screws as claimed in claim 1 and the Orthopedic rod being connected multiple described nest mortar rail pedicle screw, and described Orthopedic rod is fastened in the U-type groove of described each holder.
9. nest mortar rail chain type replacement and fixation dynamic pedicle screw system as claimed in claim 8, it is characterized in that: it also comprises the resilient infill being arranged on described nest mortar rail pedicle screw inside, described resilient infill comprises the adjusting pad of the top of the supporting pad be arranged on below described Orthopedic rod and the head being arranged on described button.
10. nest mortar rail chain type replacement and fixation dynamic pedicle screw system as claimed in claim 9, is characterized in that: described supporting pad is provided with the groove axially coordinated with described Orthopedic rod.
11. nest mortar rail chain type replacement and fixation dynamic pedicle screw systems as claimed in claim 9, is characterized in that: described adjusting pad is for be made up of some wave washers.
12. nest mortar rail chain type replacement and fixation dynamic pedicle screw systems as claimed in claim 9, is characterized in that: described resilient infill is one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520221545.5U CN204708968U (en) | 2015-04-13 | 2015-04-13 | Nest mortar rail pedicle screw and nest mortar rail chain type replacement and fixation dynamic pedicle screw system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520221545.5U CN204708968U (en) | 2015-04-13 | 2015-04-13 | Nest mortar rail pedicle screw and nest mortar rail chain type replacement and fixation dynamic pedicle screw system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204708968U true CN204708968U (en) | 2015-10-21 |
Family
ID=54308003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520221545.5U Withdrawn - After Issue CN204708968U (en) | 2015-04-13 | 2015-04-13 | Nest mortar rail pedicle screw and nest mortar rail chain type replacement and fixation dynamic pedicle screw system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204708968U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104799931A (en) * | 2015-04-13 | 2015-07-29 | 李贵涛 | Glenoid rail chain type returning fixing and dynamic pedicle screw system |
| CN106580419A (en) * | 2017-01-11 | 2017-04-26 | 南京市第医院 | Bone screw for osteoporotic bone fixation |
| CN117717404A (en) * | 2024-02-08 | 2024-03-19 | 中国人民解放军总医院第一医学中心 | Bone screw combiner and spinal stabilization system |
-
2015
- 2015-04-13 CN CN201520221545.5U patent/CN204708968U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104799931A (en) * | 2015-04-13 | 2015-07-29 | 李贵涛 | Glenoid rail chain type returning fixing and dynamic pedicle screw system |
| CN106580419A (en) * | 2017-01-11 | 2017-04-26 | 南京市第医院 | Bone screw for osteoporotic bone fixation |
| CN106580419B (en) * | 2017-01-11 | 2019-05-03 | 南京市第一医院 | A kind of bone screws for osteoporosis bone fixation |
| CN117717404A (en) * | 2024-02-08 | 2024-03-19 | 中国人民解放军总医院第一医学中心 | Bone screw combiner and spinal stabilization system |
| CN117717404B (en) * | 2024-02-08 | 2024-05-10 | 中国人民解放军总医院第一医学中心 | Bone screw combiner and spinal stabilization system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151021 Effective date of abandoning: 20170707 |