CN201185926Y - Bevel protractor for imbedding medical vertebral pedicle nail - Google Patents
Bevel protractor for imbedding medical vertebral pedicle nail Download PDFInfo
- Publication number
- CN201185926Y CN201185926Y CNU2008200218482U CN200820021848U CN201185926Y CN 201185926 Y CN201185926 Y CN 201185926Y CN U2008200218482 U CNU2008200218482 U CN U2008200218482U CN 200820021848 U CN200820021848 U CN 200820021848U CN 201185926 Y CN201185926 Y CN 201185926Y
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- angle
- bevel protractor
- vertical
- pedicle
- transverse
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Abstract
The utility model relates to a medical pedicle screw implantation angle scale for accurately measuring angles in the pedicle screw implantation of orthopaedics spinal surgeries, of which body is formed by two rectangle metal scales vertical with each other, including a transverse angle ruler (2) with a transverse scale and a longitudinal angle ruler (3) with a longitudinal scale vertical with the transverse angle ruler, a longitudinal edge (4) and a bottom edge (1) vertical with each other which are provided under the two angle rulers as supports, the two angle rulers have a minimum angle scale (5) of 2.5 degrees, and the transverse angle ruler (2) is provided with a vertical needle (6).
Description
Technical field:
This utility model belongs to the medical bevel protractor that is used for accurately taking measurement of an angle when a kind of orthopaedics spinal operation is inserted pedicle nail.
Background technology:
The main effect of pedicle screw in spinal surgery is to fix by spinal column three posts, stablizes the motion segment of vertebral body, to promote the fusion of spinal column.The fixed system of various use pedicle screws is used to treat spinal fracture, tumor, deformity, the change of various moving back property row etc., and these systems utilize the pedicle screw to keep the stable until firm joint fusion of sections.Pedicle screw is different from general bone screw, anatomical features based on pedicle of vertebral arch, pedicle screw must be arranged on the unique correct passage of three dimensions, according to correct sagittal plane angle and horizontal plane angle, passes this narrow and small bone pipeline of pedicle of vertebral arch along the pedicle of vertebral arch major axis that is:.Because the diameter of pedicle of vertebral arch is limited, neck thoracic vertebral pedicle especially causes the difficulty of inserting of pedicle nail, and technology is difficult to be grasped.The existence of individual variation, and the existence of deformity of spine or fracture have more increased and have put the nail difficulty.Therefore, still there is higher misplace rate in inserting of screw at present, and misplace has become influences the principal element that this advanced technology is used.Pedicle nail placing direction deviation will the injured nerve root, vital tissues such as spinal cord, blood vessel, increases the weight of patient's symptom, and paralysis appears in severe patient, even dead.Be badly in need of at present the medical bevel protractor that a kind of accurate measurement pedicle nail is inserted angle clinically.
Summary of the invention:
Main task of the present utility model be for the spinal surgery doctor when inserting pedicle nail, provide a kind of easy to use, labelling is clear, measures bevel protractor accurately, inserts accuracy rate to improve pedicle nail, avoids the vital tissue damage, increases constant intensity.
This utility model is like this design: main body is made of mutually perpendicular two metal rules of rectangle, and the transverse design rule is horizontal bevel protractor, is vertical bevel protractor perpendicular to vertical rule of horizontal bevel protractor.There are mutually perpendicular longitudinal edge and base in two bevel protractors below as support.It is 2.5 that two bevel protractors have all designed least unit.Angle index.Design has a vertical pin on the horizontal bevel protractor, is convenient to take measurement of an angle.
Advantage of the present utility model is: simplicity of design, and easy to use, labelling is clear, measures accurately, can effectively improve pedicle nail and insert accuracy rate, avoids the vital tissue damage, increases constant intensity; The clinical demand amount is big, and production cost is low, has huge economic benefit and good market prospect.
Description of drawings:
Fig. 1 is structure principle chart of the present utility model (front).
Fig. 2 is structure principle chart of the present utility model (side).
Fig. 3 is user mode figure of the present utility model (measurement at f angle).
Fig. 4 is user mode figure of the present utility model (measurement at e angle).
Among Fig. 1, Fig. 2, the 1st, the base, the 2nd, horizontal bevel protractor, the 3rd, vertical bevel protractor, the 4th, longitudinal edge, the 5th, angle index, the 6th, pin hangs down.
The specific embodiment:
In conjunction with the accompanying drawings embodiment of the present utility model is described further (is example with waist 4 pedicles of vertebral arch): pass through position, art front side X-ray film according to imaging examination (X-ray film, CT, MRI) before patient's art, two vertebral plates connect a line up and down, the upper pedicle of vertebral arch longitudinal axis is drawn a line, two wire clamp angles are the f angle, the pedicle of vertebral arch longitudinal axis and center line angle (e angle).In the operation, the patient ventricumbent position is parallel to ground.Median incision behind the waist, incision appears spinous process of lumbar vertebra, vertebral plate, zygapophysial joints, transverse process root, determines into the nail point according to plan before the art.Surgical doctor is handed bevel protractor longitudinal edge (4), and bevel protractor base (1) is placed in two lamina surface up and down, and the pin (6) that hangs down is parallel to the rectangle face, and horizontal bevel protractor (2) can be measured the f angle, and vertical bevel protractor (3) can be measured the e angle.After determining nail point, can accurately insert pedicle nail according to these two angles.Because of there is angle index (5) on the bevel protractor two sides, can accurately insert the offside pedicle nail with method.
Claims (2)
1. the medical vertebral arch pedicle nail is inserted bevel protractor, it is characterized in that: main body is made of mutually perpendicular two metal rules of rectangle, the transverse design rule is horizontal bevel protractor (2), vertical rule perpendicular to horizontal bevel protractor is vertical bevel protractor (3), and there are mutually perpendicular longitudinal edge (4) and base (1) in two bevel protractors below as supporting.
2. insert bevel protractor according to the described medical vertebral arch pedicle of claim 1 nail, it is characterized in that: it is 2.5 ° angle index (5) that two bevel protractors all design least unit, and (2) design has the pin (6) that hangs down on the horizontal bevel protractor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200218482U CN201185926Y (en) | 2008-05-06 | 2008-05-06 | Bevel protractor for imbedding medical vertebral pedicle nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200218482U CN201185926Y (en) | 2008-05-06 | 2008-05-06 | Bevel protractor for imbedding medical vertebral pedicle nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201185926Y true CN201185926Y (en) | 2009-01-28 |
Family
ID=40308937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200218482U Expired - Fee Related CN201185926Y (en) | 2008-05-06 | 2008-05-06 | Bevel protractor for imbedding medical vertebral pedicle nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201185926Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114305641A (en) * | 2021-12-27 | 2022-04-12 | 慈溪市人民医院医疗健康集团(慈溪市人民医院) | Pedicle screw advances nail angle measuring subassembly |
-
2008
- 2008-05-06 CN CNU2008200218482U patent/CN201185926Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114305641A (en) * | 2021-12-27 | 2022-04-12 | 慈溪市人民医院医疗健康集团(慈溪市人民医院) | Pedicle screw advances nail angle measuring subassembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090128 Termination date: 20100506 |