CN203138658U - Vertebral pedicle fixing device capable of adjusting length - Google Patents
Vertebral pedicle fixing device capable of adjusting length Download PDFInfo
- Publication number
- CN203138658U CN203138658U CN 201320093135 CN201320093135U CN203138658U CN 203138658 U CN203138658 U CN 203138658U CN 201320093135 CN201320093135 CN 201320093135 CN 201320093135 U CN201320093135 U CN 201320093135U CN 203138658 U CN203138658 U CN 203138658U
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- China
- Prior art keywords
- connecting rod
- sliding sleeve
- nut
- scale
- screwed cap
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Abstract
The utility model discloses a vertebral pedicle fixing device capable of adjusting length. The vertebral pedicle fixing device comprises a front nail, a connecting rod, a sliding sleeve and a screwed cap, wherein an exiting guiding step is further arranged at the joint of the front nail and the connecting rod; the screwed cap is arranged at the back end of the sliding sleeve; an external screw thread matched with the screwed cap is arranged on the outer surface of the sliding sleeve; the screwed cap enables the back end surface of the connecting rod to abut against the inner side surface at the semi-closed end of the screwed cap when the sliding sleeve is in threaded connection with the screwed cap, so that the connecting rod and the sliding sleeve are relatively fixed; a measuring scale is arranged at the back end of the connecting rod; and the part of the measuring scale provided with scales is exposed outside the screwed cap after penetrating through a through hole in the screwed cap. The exiting guiding step is arranged at the joint of the front nail and the connecting rod so as to facilitate the disassembling of the front nail, the length of a vertebral pedicle is adjusted and prolonged through the threaded connection between the sliding sleeve and the screwed cap, and accurate data is read through the measuring scale, so that the purposes of increasing the spinal canal and intervertebral foramina, improving the stenosis degree, contacting the neurothlipsis and reducing the pressure are achieved, and the vertebral pedicle fixing device, as a fixing device, is used in surgical operations of lumbar spinal stenosis.
Description
Technical field
This utility model relates to a kind of fixation of pedicle device that can regulate length.
Background technology
Along with the work living habit that the modern is bad is thought in the aggravation of aged tendency of population, the sickness rate of lumbar spinal stenosis is more and more higher.Lumbar spinal stenosis refers to that the hyperosteogeny that caused by a variety of causes or proliferation of fibrous tissue, plumpness cause sagittal diameter shortening, stimulation and the pressuring neural root of Taper Pipe or nerve root canal or cauda equina nerve and a series of clinical symptoms of causing; Lumbar spinal stenosis can be monoplane (adjacent two cones, intervertebral disc, little joint and suporting ligament), or many planes (involving two or more gaps).Its typical clinical manifestation is: the bilateral nerve is walked lamely, and intermittent thigh or shank radiated pain are stood, sx when activity or waist hyperextension for a long time, sits, crouches or alleviate during the waist flexing.
Invalid to regular expectant treatment for some, lumbago and skelalgia, numbness of lower limbs, intermittent claudication continue to increase the weight of, and carrying out property of neurological disorder sign increases the weight of, and influence the work life, and patient requires to make the life better quality person, unnecessary operative treatment.
Present operation method mainly adopts through excision decompression, pedicle screw fixation and intervertebral fusion arts such as way of escape vertebral plate, articular processes, thereby enlarges Taper Pipe, reaches releasing to the purpose of the compressing of nerve.
Yet, not only directly influence the stability of lumbar vertebra after the decompression of traditional vertebral plate, and dura mater loses the barrier of skeleton, forming dura mater and muscle connects sticking, so cause epidural scarring formation, decompression position osteanagenesis etc. easily, be the main cause of operative failure, bring big painful to the patient.
The utility model content
The purpose of this utility model is to provide a kind of fixation of pedicle device that can regulate length.
The solution that this utility model solves its technical problem is: a kind of fixation of pedicle device that can regulate length, it comprises preceding nail, connecting rod, be installed in rod rear end is outside and can move along connecting rod sliding sleeve and nut, nail and connecting rod are formed in one and form before described, the junction of preceding nail and connecting rod also is provided with withdraws from the guiding step, described nut is installed in the rear end of sliding sleeve, the outer surface of sliding sleeve is provided with the external screw thread that cooperates with described nut, one end of nut is semiclosed, the rear end face of connecting rod propped up the medial surface of the semiclosed end of nut when sliding sleeve and nut were threaded, make connecting rod and sliding sleeve relative fixed, fixedly there is scale the rear end of described connecting rod, and the part that is carved with scale on the described scale is exposed at outside the nut after passing through hole on the semiclosed end of nut.
As further improvement in the technical proposal, the front end of described sliding sleeve is provided with guide ledges.
As further improvement in the technical proposal, described connecting rod is hollow bar, nails on before described and is provided with plurality of through holes, and described through hole is communicated with the hollow hole of connecting rod, and the threaded one end of described scale is installed in the through hole.
As further improvement in the technical proposal, the outer surface of described preceding nail is provided with screw thread, projection or frosted structure.
As further improvement in the technical proposal, the outer surface of described sliding sleeve is provided with screw thread, projection or frosted structure.
As further improvement in the technical proposal, the external diameter of described sliding sleeve equals or is slightly larger than the external diameter of preceding nail.
As further improvement in the technical proposal, the scale precision on the described scale is 0.2 millimeter, and the position of being carved with scale on the scale is broken.
The beneficial effects of the utility model are: this utility model is provided with by the junction at preceding nail and connecting rod and withdraws from the guiding step, the dismounting of nail before being convenient to, and adjust and prolong the length of pedicle of vertebral arch by being threaded of sliding sleeve and nut, by reading initial position on the scale and the scale of final position, draw the extending length of pedicle of vertebral arch after the calculating, increase Taper Pipe and intervertebral foramina thereby reach, improve stenosis, the contact nerve compression, reach the purpose of decompression, can be used as fixture and be used for the lumbar spinal stenosis surgical operation.
Description of drawings
Below in conjunction with accompanying drawing and example this utility model is further described.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the enlarged drawing of broken circle institute frame choosing part among Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing, describe application of the present utility model in detail.
With reference to Fig. 1 ~ Fig. 2, a kind of fixation of pedicle device that can regulate length, nail 1 before it comprises, connecting rod 2, be installed in connecting rod 2 rear ends are outside and can move along connecting rod sliding sleeve 3 and nut 4, nail 1 and connecting rod 2 are formed in one and form before described, the junction of preceding nail 1 and connecting rod 2 also is provided with withdraws from guiding step 10, described nut 4 is installed in the rear end of sliding sleeve 3, the outer surface of sliding sleeve 3 is provided with the external screw thread that cooperates with described nut 4, one end of nut 4 is semiclosed, the rear end face of connecting rod propped up the medial surface of the semiclosed end of nut 4 when sliding sleeve 3 and nut 4 were threaded, make connecting rod 2 and sliding sleeve 3 relative fixed, fixedly there is scale 5 rear end of described connecting rod 3, and the part that is carved with scale on the described scale 5 is exposed at outside the nut 4 after passing through hole on the semiclosed end of nut 4.
Be provided with by the junction at preceding nail 1 and connecting rod 2 and withdraw from guiding step 10, the dismounting of nail 1 before being convenient to, and adjust and prolong the length of pedicle of vertebral arch by being threaded of sliding sleeve 3 and nut 4, by reading initial position on the scale 5 and the scale of final position, draw the extending length of pedicle of vertebral arch after the calculating, increase Taper Pipe and intervertebral foramina thereby reach, improve stenosis, contact nerve compression, reach the purpose of decompression, can be used as fixture and be used for the lumbar spinal stenosis surgical operation.
Be further used as preferred embodiment, the front end of described sliding sleeve 3 is provided with guide ledges 30, is convenient to sliding sleeve 3 and enters pedicle of vertebral arch.
Be further used as preferred embodiment, described connecting rod 2 is hollow bar, and described preceding nail 1 is provided with plurality of through holes 11, and described through hole 11 is communicated with the hollow hole of connecting rod 2, and the threaded one end of described scale 5 is installed in the through hole 11.。
Be further used as preferred embodiment, the outer surface of described preceding nail 1 is provided with screw thread, projection or frosted structure.
Be further used as preferred embodiment, the outer surface of described sliding sleeve 3 is provided with screw thread, projection or frosted structure, is convenient to sliding sleeve 3 and is fixed in the pedicle of vertebral arch.
Be further used as preferred embodiment, the external diameter of described sliding sleeve 3 equals or is slightly larger than the external diameter of preceding nail 1, is convenient to sliding sleeve 3 and is fixed in the pedicle of vertebral arch.
Be further used as preferred embodiment, the scale precision on the described scale 5 is 0.2 millimeter, and the position of being carved with scale on the scale 5 is broken, after the intact pedicle of vertebral arch displacement to be recorded, the scale portion of exposing outside nut 4 can be fractureed.
More than be that preferred embodiments of the present utility model is specified, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement under the prerequisite of this utility model spirit, the modification that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (7)
1. the fixation of pedicle device that can regulate length, it is characterized in that: it comprises preceding nail (1), connecting rod (2), be installed in connecting rod (2) rear end is outside and can move along connecting rod sliding sleeve (3) and nut (4), nail (1) and connecting rod (2) are formed in one and form before described, the junction of preceding nail (1) and connecting rod (2) also is provided with withdraws from guiding step (10), described nut (4) is installed in the rear end of sliding sleeve (3), the outer surface of sliding sleeve (3) is provided with the external screw thread that cooperates with described nut (4), one end of nut (4) is semiclosed, make sliding sleeve (3) and nut (4) when being threaded the rear end face of connecting rod prop up the medial surface of the semiclosed end of nut (4), make connecting rod (2) and sliding sleeve (3) relative fixed, fixedly there is scale (5) rear end of described connecting rod (3), and the part that is carved with scale on the described scale (5) is exposed at outside the nut (4) after passing through hole on the semiclosed end of nut (4).
2. the fixation of pedicle device that can regulate length according to claim 1, it is characterized in that: the front end of described sliding sleeve (3) is provided with guide ledges (30).
3. the fixation of pedicle device that can regulate length according to claim 1 and 2, it is characterized in that: described connecting rod (2) is hollow bar, nail (1) is provided with plurality of through holes (11) before described, described through hole (11) is communicated with the hollow hole of connecting rod (2), and the threaded one end of described scale (5) is installed in the through hole (11).
4. the fixation of pedicle device that can regulate length according to claim 3 is characterized in that: the outer surface of nail (1) is provided with screw thread, projection or frosted structure before described.
5. the fixation of pedicle device that can regulate length according to claim 3, it is characterized in that: the outer surface of described sliding sleeve (3) is provided with screw thread, projection or frosted structure.
6. the fixation of pedicle device that can regulate length according to claim 1, it is characterized in that: the external diameter of described sliding sleeve (3) equals or is slightly larger than the external diameter of preceding nail (1).
7. the fixation of pedicle device that can regulate length according to claim 1, it is characterized in that: the scale precision on the described scale (5) is 0.2 millimeter, the position of being carved with scale on the scale (5) is broken.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320093135 CN203138658U (en) | 2013-02-28 | 2013-02-28 | Vertebral pedicle fixing device capable of adjusting length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320093135 CN203138658U (en) | 2013-02-28 | 2013-02-28 | Vertebral pedicle fixing device capable of adjusting length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203138658U true CN203138658U (en) | 2013-08-21 |
Family
ID=48966222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320093135 Expired - Lifetime CN203138658U (en) | 2013-02-28 | 2013-02-28 | Vertebral pedicle fixing device capable of adjusting length |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203138658U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111358528A (en) * | 2020-03-23 | 2020-07-03 | 中国人民解放军总医院第八医学中心 | Hepatobiliary calculus removing device |
-
2013
- 2013-02-28 CN CN 201320093135 patent/CN203138658U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111358528A (en) * | 2020-03-23 | 2020-07-03 | 中国人民解放军总医院第八医学中心 | Hepatobiliary calculus removing device |
| CN111358528B (en) * | 2020-03-23 | 2021-01-19 | 中国人民解放军总医院第八医学中心 | Hepatobiliary calculus removing device |
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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 |
Granted publication date: 20130821 |
|
| CX01 | Expiry of patent term |