CN103445854B - Locator for vertebral arch pedicle screw implanting operation - Google Patents
Locator for vertebral arch pedicle screw implanting operation Download PDFInfo
- Publication number
- CN103445854B CN103445854B CN201310374995.3A CN201310374995A CN103445854B CN 103445854 B CN103445854 B CN 103445854B CN 201310374995 A CN201310374995 A CN 201310374995A CN 103445854 B CN103445854 B CN 103445854B
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- China
- Prior art keywords
- locating
- rod
- arm
- baseline rod
- pedicle screw
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Abstract
The invention discloses a locator for a vertebral arch pedicle screw implanting operation. The locator comprises two opening arms which are hinged together, wherein one end of each opening arms is provided with a handle, the other ends of the two opening arms are respectively and fixedly connected with a locating rod which is in orthogonal connection with the opening arm, outstretched locating sections are respectively arranged at the bottoms of the two locating rods, and the end faces of the locating sections are arc-shaped faces adaptive to the bottom edge of a vertebral arch pedicle; an outward extending reference rod is connected to at least one locating rod, a locating block is connected to the reference rod in a sliding manner and is located on the reference rod through a locking device, a locating hole which is used for inserting an opening needle and an opening guide drill is formed in the locating block, and a long hole which is formed corresponding to the locating hole and extends along the length direction of the reference rod is formed in the reference rod. The locator for the vertebral arch pedicle screw implanting operation has the advantages that the accuracy of lumbar pedicle screw implanting can be improved, the screw holding force is increased, and an operation operating space between every two adjacent vertebrae is increased.
Description
Technical field
The present invention relates to a kind of pedicle screw implant surgery localizer.
Background technology
Pedicle of lumbar vertebral arch internal fixtion posterior decompression bone grafting generally adopts adjacent vertebral bodies to insert pedicle screw, intervertebral spinal fusion place removal of disc, process intervertebral space, bone-graft fusion.During operation, insert pedicle screw by the intersection point of transverse process centrage and superior articular process's extension cord, then (intervertebral foramina), by apparatus removal of disc, processes intervertebral space, bone-graft fusion between upper and lower pedicle of vertebral arch.Because pedicle nail inserts pedicle of vertebral arch center cancellous bone portion, the hold of screw is weak relative to cortical bone, and narrow space between adjacent two pedicle screws is not easy to the instrumentations such as disc removal, intervertebral space process and bone-graft fusion.For ensure surgical effect, inserting of pedicle screw preferably can cut part cortical bone, and can not penetrate completely, and at utmost can increase intervertebral can operation technique space.The optimum position inserting pedicle of lumbar vertebral arch screw is pedicle of vertebral arch upper and lower 1/4th or 3/4ths place (entry point be upper 1/4th of upper vertebral body pedicle of vertebral arch and lower 3/4ths of the next vertebral body pedicle of vertebral arch), the pedicle of vertebral arch size of different people is different and the difference epicentral pedicle of vertebral arch size of same people is also different, thus above-mentioned position is not scale position, also can not carry out pinpoint localizer now.
Summary of the invention
The present invention is directed to the pedicle screw implant surgery localizer that the problems referred to above provide a kind of open a way pin registration thus the implantation degree of accuracy of guarantee pedicle nail.
In order to solve the problems of the technologies described above, the invention provides a kind of pedicle screw implant surgery localizer of following structure, it comprises hinged two and struts arm, two one end strutting arm are respectively equipped with hands handle, the other end is connected with the locating rod of connection orthogonal with strutting arm respectively, the bottom of two locating rods is respectively equipped with overhanging positioning section, the end face of positioning section is the cambered surface adapted to pedicle of vertebral arch bottom edge, wherein at least one locating rod is connected with outward extending baseline rod, baseline rod slidably connects locating piece and locating piece is positioned on baseline rod by locking device, locating piece is provided with the locating hole penetrated for open circuit pin and open circuit guide bur, baseline rod is provided with arrange and the elongated hole that along baseline rod length direction extend corresponding with locating hole.
The cross section of described baseline rod is on-circular cross-section, and locating piece has the through hole adapted with baseline rod cross section, and described locking device is the clamping screw be screwed onto on locating piece.
The cross section of described locating rod is circular, baseline rod is connected with and is rotationally connected block, be rotationally connected block and be rotationally connected on the securing lever, locating rod is also bolted with the lock(ing) bolt that locking is rotationally connected block.
Described baseline rod is provided with graduation mark.
Wherein one strut lower registration arm arm being connected with arc setting, the center of arc and two of lower registration arm struts the hinged center superposition of arm, the surface of lower registration arm is provided with uniform groove, and another struts arm and to be overlapped in lower registration arm and faying surface is provided with location lobe.
After adopting said structure, the two hinged arms that strut are opened by hand-held handle part, locating rod props up the relative edge of two adjacent pedicles of vertebral arch, baseline rod is positioned at above transverse process centrage and superior articular process's outer rim intersection point, by the scale of baseline rod, determine pedicle of vertebral arch mid point and width, by the position of adjustment locating piece on baseline rod and orientation, make the locating hole of baseline rod drop on the best and enter to follow closely (pedicle of vertebral arch upper and lower 1/4th or 3/4ths place) above position, determine the inserting needle position of open circuit pin, squeeze into open circuit guide bur thus.Can be found out by foregoing description, the in-position of open circuit guide bur can accurately be fixed by the present invention, what improve pedicle screw inserts precision, improve the operability of operation, after inserting pedicle of lumbar vertebral arch screw by the present invention location, the hold of pedicle screw strengthens, and adjacent pedicle screw spacing increases, and increases the space of adjacent interspinous operation technique.
In sum, the present invention can improve inserting degree of accuracy and increasing the hold of screw of pedicle of lumbar vertebral arch screw, and increases adjacent interspinous operation technique space.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of the present invention;
Fig. 2 is the structural representation that Fig. 1 overlooks;
Fig. 3 is the structural representation analysed and observe along A-A line in Fig. 2;
Fig. 4 is the structural representation analysed and observe along B-B line in Fig. 2;
Fig. 5 is the schematic diagram of the present invention under surgical state.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail:
As shown in Figures 1 to 4, pedicle screw implant surgery localizer provided by the present invention comprises hinged two and struts arm 1, wherein one strut the lower registration arm 12 arm 1 being connected with arc setting, the center of arc and two of lower registration arm 12 struts the hinged center superposition of arm, the surface of lower registration arm 12 is provided with uniform groove, another struts arm 1 and to be overlapped in lower registration arm 12 and faying surface is provided with location lobe, by the groove in lower registration arm 12 and being engaged of location lobe strutting arm 1, abundant guarantee two struts the distraction angle of arm 1, namely ensure that two distraction angles strutting arm front end.Two one end strutting arm 1 are respectively equipped with handle 2, the other end is connected with the locating rod 3 of connection orthogonal with strutting arm 1 respectively, shown in composition graphs 1 and Fig. 2, being meant to of locating rod 3 setting orthogonal with strutting arm 1: locating rod 3 to stretch out direction vertical with the bearing of trend strutting arm 1, the bottom of two locating rods 3 is respectively equipped with overhanging positioning section 31, positioning section 31 is parallel to and struts arm 1, the end face of positioning section 31 is the cambered surface adapted to pedicle of vertebral arch bottom edge, wherein at least one locating rod 3 is connected with outward extending baseline rod 4, composition graphs 1 and Fig. 2, outward extending baseline rod 4 refers to and to arrange perpendicular to locating rod 3 and to be parallel to the developed surface that two strut arm, baseline rod 4 slidably connects locating piece 5 and locating piece 5 is positioned on baseline rod 4 by locking device, locating piece 5 is provided with the locating hole 6 penetrated for open circuit pin and open circuit guide bur, baseline rod 4 is provided with arrange and the elongated hole 7 that along baseline rod 4 length direction extend corresponding with locating hole 6, the diameter of locating hole 6 is greater than the width of elongated hole 7, can ensure that open circuit needle set has certain gradient to enter, as shown in Figure 3 and Figure 4, the cross section of baseline rod 4 is on-circular cross-section, locating piece 5 has the through hole adapted with baseline rod 4 cross section, described locking device is the clamping screw 8 be screwed onto on locating piece 5, baseline rod 4 is provided with graduation mark 11.The cross section of locating rod 3 is circular, baseline rod 4 is connected with and is rotationally connected block 9, being rotationally connected block 9 is rotatably connected on locating rod 3, namely be rotationally connected block 9 and be provided with the circular hole inserted for locating rod 3, locating rod 3 is also bolted with the lock(ing) bolt 10 that locking is rotationally connected block 9, by above-mentioned setting, baseline rod 4 can turn an angle around locating rod 3, so that baseline rod 4 is positioned at above pedicle of vertebral arch accurately.
As shown in Figure 5, using state of the present invention, the relative edge of two adjacent pedicles of vertebral arch is propped up by positioning section 31 end face, baseline rod 4 is positioned at above transverse process centrage and superior articular process's outer rim intersection point, by the scale of baseline rod, determine pedicle of vertebral arch mid point and width, by the position of adjustment locating piece 5 on baseline rod 4 and orientation, make the locating hole of baseline rod drop on the best and enter to follow closely (pedicle of vertebral arch upper and lower 1/4th or 3/4ths place) above position, determine the inserting needle position of open circuit pin accurately, squeeze into open circuit guide bur thus.
The above is specific constructive form of the present invention, and the present invention is not restricted to the described embodiments, and the art personnel, replaces all in protection scope of the present invention based on the equivalent variations of concrete structure in the present invention and parts.
Claims (3)
1. a pedicle screw implant surgery localizer, comprise hinged two and strut arm (1), two one end strutting arm (1) are respectively equipped with handle (2), the other end is connected with and the locating rod (3) strutting arm (1) orthogonal connection respectively, it is characterized in that: the bottom of two locating rods (3) is respectively equipped with overhanging positioning section (31), the end face of positioning section (31) is the cambered surface adapted to pedicle of vertebral arch bottom edge, wherein at least one locating rod (3) is connected with outward extending baseline rod (4), baseline rod (4) slidably connects locating piece (5) and locating piece (5) is positioned on baseline rod (4) by locking device, locating piece (5) is provided with the locating hole (6) penetrated for open circuit pin and open circuit guide bur, baseline rod (4) is provided with arrange and the elongated hole (7) that along baseline rod (4) length direction extend corresponding with locating hole (6), the cross section of baseline rod (4) is on-circular cross-section, and locating piece (5) has the through hole adapted with baseline rod (4) cross section, and described locking device is for being screwed onto the clamping screw (8) on locating piece (5), the cross section of locating rod (3) is circular, baseline rod (4) is connected with and is rotationally connected block (9), be rotationally connected block (9) and be rotatably connected on locating rod (3), locating rod (3) is also bolted with the lock(ing) bolt (10) that locking is rotationally connected block (9).
2. pedicle screw implant surgery localizer as claimed in claim 1, is characterized in that: described baseline rod (4) is provided with graduation mark (11).
3. pedicle screw implant surgery localizer as claimed in claim 1, it is characterized in that: wherein one strut the lower registration arm (12) arm (1) being connected with arc setting, the center of arc and two of lower registration arm (12) struts the hinged center superposition of arm, the surface of lower registration arm (12) is provided with uniform groove, and another struts arm (1) and is overlapped on that lower registration arm (12) is upper and faying surface is provided with location lobe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310374995.3A CN103445854B (en) | 2013-08-26 | 2013-08-26 | Locator for vertebral arch pedicle screw implanting operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310374995.3A CN103445854B (en) | 2013-08-26 | 2013-08-26 | Locator for vertebral arch pedicle screw implanting operation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103445854A CN103445854A (en) | 2013-12-18 |
| CN103445854B true CN103445854B (en) | 2015-06-10 |
Family
ID=49728989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310374995.3A Expired - Fee Related CN103445854B (en) | 2013-08-26 | 2013-08-26 | Locator for vertebral arch pedicle screw implanting operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103445854B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106037909B (en) * | 2016-05-19 | 2018-06-19 | 汤向阳 | Thoracolumbar disk screw entrance point and angle positioning device |
| CN107361837B (en) * | 2017-07-28 | 2019-10-18 | 河北瑞鹤医疗器械有限公司 | Pressurizing and propping device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2680212Y (en) * | 2003-09-30 | 2005-02-23 | 江永发 | Screw guiding and positioning device for vertebral arch pedicle |
| CN201135492Y (en) * | 2007-12-03 | 2008-10-22 | 上海市第六人民医院 | Femoral intramedullary nail needle insertion sights |
| CN101342088A (en) * | 2007-07-11 | 2009-01-14 | 南京医科大学附属南京第一医院 | Internal fixation screw positioner |
| CN201782814U (en) * | 2010-07-28 | 2011-04-06 | 徐兆万 | Aligner of cervical pedicle screw |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1442714A1 (en) * | 2003-02-03 | 2004-08-04 | Centerpulse Orthopedics Ltd. | Aiming aid for vertebrae |
| US7993376B2 (en) * | 2005-09-29 | 2011-08-09 | Depuy Spine, Inc. | Methods of implanting a motion segment repair system |
| CN201275138Y (en) * | 2008-10-30 | 2009-07-22 | 于杰 | Three-dimensional adjustable screw locater for vertebral pedicle |
-
2013
- 2013-08-26 CN CN201310374995.3A patent/CN103445854B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2680212Y (en) * | 2003-09-30 | 2005-02-23 | 江永发 | Screw guiding and positioning device for vertebral arch pedicle |
| CN101342088A (en) * | 2007-07-11 | 2009-01-14 | 南京医科大学附属南京第一医院 | Internal fixation screw positioner |
| CN201135492Y (en) * | 2007-12-03 | 2008-10-22 | 上海市第六人民医院 | Femoral intramedullary nail needle insertion sights |
| CN201782814U (en) * | 2010-07-28 | 2011-04-06 | 徐兆万 | Aligner of cervical pedicle screw |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103445854A (en) | 2013-12-18 |
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