CN103445854A - Locator for vertebral arch pedicle screw implanting operation - Google Patents
Locator for vertebral arch pedicle screw implanting operation Download PDFInfo
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- CN103445854A CN103445854A CN2013103749953A CN201310374995A CN103445854A CN 103445854 A CN103445854 A CN 103445854A CN 2013103749953 A CN2013103749953 A CN 2013103749953A CN 201310374995 A CN201310374995 A CN 201310374995A CN 103445854 A CN103445854 A CN 103445854A
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- locating
- rod
- arm
- pedicle screw
- baseline rod
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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
The interior fixedly intervertebral bone graft fusion of pedicle of lumbar vertebral arch generally adopts adjacent vertebral bodies to insert pedicle screw, and intervertebral disc is extractd at the intervertebral spinal fusion place, processes intervertebral space, bone-graft fusion.During operation, by the intersection point of transverse process centrage and superior articular process's extension cord, insert pedicle screw, then (intervertebral foramina) extracts intervertebral disc by apparatus between upper and lower pedicle of vertebral arch, processes intervertebral space, bone-graft fusion.Because pedicle nail is inserted pedicle of vertebral arch center spongy bone part, a little less than the hold of screw is wanted with respect to cortical bone, narrow space between adjacent two pedicle screws, be not easy to the instrumentations such as disc removal, intervertebral space processing and bone-graft fusion.For guaranteeing surgical effect, inserting preferably of pedicle screw can be cut the part cortical bone, and can not penetrate fully, but and can at utmost increase intervertebral operation technique space.The optimum position of inserting the pedicle of lumbar vertebral arch screw is pedicle of vertebral arch upper and lower 1/4th or 3/4ths places (upper 1/4th and the next vertebral body pedicle of vertebral arch that entry point is upper vertebral body pedicle of vertebral arch lower 3/4ths), the pedicle of vertebral arch size of different people is different and the epicentral pedicle of vertebral arch size of difference same people is also different, thereby above-mentioned position is not the scale position, also can not carry out pinpoint localizer now.
Summary of the invention
Thereby the present invention is directed to the problems referred to above provides a kind of pin registration of opening a way to guarantee the pedicle screw implant surgery localizer of the implantation degree of accuracy of 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 that hinged two strut arm, two ends that strut arm are respectively equipped with the hands handle, the other end is connected with respectively and the locating rod that struts the arm quadrature and be connected, 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, be connected with outward extending baseline rod, slidably connecting locating piece and locating piece on baseline rod 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 the slotted hole that arrange and along baseline rod length direction extend corresponding to locating hole.
The cross section of described baseline rod is on-circular cross-section, and locating piece has the through hole adapted with the 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, is connected with on baseline rod and is rotationally connected piece, is rotationally connected piece and is rotatably connected on locating rod, also is bolted with the lock(ing) bolt that locking is rotationally connected piece on locating rod.
Described baseline rod is provided with graduation mark.
Wherein one strut on arm the lower registration arm that is connected with the arc setting, the center of arc of lower registration arm and two struts the hinged center superposition of arm, the surface of lower registration arm is provided with uniform groove, and another struts arm and is overlapped on lower registration arm and faying surface is provided with the location lobe.
After adopting said structure, hand-held handle part is opened the two hinged arms that strut, locating rod props up the relative edge of two adjacent pedicles of vertebral arch, baseline rod is positioned at transverse process centrage and superior articular process's outer rim intersection point top, scale by baseline rod, determine pedicle of vertebral arch mid point and width, by adjusting position and the orientation of locating piece on baseline rod, make the locating hole of baseline rod drop on the best and enter to follow closely top, position (pedicle of vertebral arch upper and lower 1/4th or 3/4ths places), determined the inserting needle position of open circuit pin, squeezed into thus the open circuit guide bur and get final product.By foregoing description, can find out, the present invention can be accurately fixing by the in-position of open circuit guide bur, improved the precision of inserting of pedicle screw, improved the operability of operation, after locating and insert the pedicle of lumbar vertebral arch screw by the present invention, the hold of pedicle screw strengthens, and the increase of adjacent pedicle screw spacing, the space that has increased adjacent intervertebral operation technique.
In sum, the present invention can improve inserting degree of accuracy and having increased the hold of screw of pedicle of lumbar vertebral arch screw, and has increased adjacent intervertebral operation technique space.
The 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 along in Fig. 2, the A-A line is analysed and observe;
Fig. 4 is the structural representation along in Fig. 2, the B-B line is analysed and observe;
Fig. 5 is the schematic diagram of the present invention under surgical state.
The specific embodiment
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 provided by the present invention comprises that with localizer hinged two strut arm 1, wherein one strut on arm 1 the lower registration arm 12 that is connected with the arc setting, the center of arc of lower registration arm 12 and two struts the hinged center superposition of arm, the surface of lower registration arm 12 is provided with uniform groove, another struts arm 1 and is overlapped on lower registration arm 12 and faying surface is provided with the location lobe, by the groove on lower registration arm 12 and the interlock that struts the location lobe of arm 1, fully guarantee that two strut the distraction angle of arm 1, guaranteed that two strut the distraction angle of arm front end.Two ends that strut arm 1 are respectively equipped with handle 2, the other end is connected with respectively and the locating rod 3 that struts arm 1 quadrature and be connected, shown in Fig. 1 and Fig. 2, locating rod 3 with the meaning that struts arm 1 quadrature setting is: locating rod 3 to stretch out direction vertical with the bearing of trend that struts 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, be connected with outward extending baseline rod 4, in conjunction with Fig. 1 and Fig. 2, outward extending baseline rod 4 refers to perpendicular to locating rod 3 and arranges and be parallel to two developed surfaces that strut arm, slidably connecting locating piece 5 and locating piece 5 on baseline rod 4 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 the slotted hole 7 that arrange and along baseline rod 4 length directions extend corresponding to locating hole 6, the diameter of locating hole 6 is greater than the width of slotted hole 7, the needle set that can guarantee to open a way 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 sections, 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, be connected with on baseline rod 4 and be rotationally connected piece 9, being rotationally connected piece 9 is rotatably connected on locating rod 3, be rotationally connected piece 9 and be provided with the circular hole inserted for locating rod 3, also be bolted with the lock(ing) bolt 10 that locking is rotationally connected piece 9 on locating rod 3, by above-mentioned setting, baseline rod 4 can turn an angle around locating rod 3, so that baseline rod 4 is positioned at the pedicle of vertebral arch top accurately.
As shown in Figure 5, using state of the present invention, prop up the relative edge of two adjacent pedicles of vertebral arch by positioning section 31 end faces, baseline rod 4 is positioned at transverse process centrage and superior articular process's outer rim intersection point top, scale by baseline rod, determine pedicle of vertebral arch mid point and width, by adjusting position and the orientation of locating piece 5 on baseline rod 4, make the locating hole of baseline rod drop on the best and enter to follow closely top, position (pedicle of vertebral arch upper and lower 1/4th or 3/4ths places), determined accurately the inserting needle position of open circuit pin, squeezed into thus the open circuit guide bur and get final product.
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, the equivalent variations based on concrete structure in the present invention and parts are replaced all in protection scope of the present invention.
Claims (5)
1. a pedicle screw implant surgery localizer, it is characterized in that comprising that hinged two strut arm (1), two ends that strut arm (1) are respectively equipped with handle (2), the other end is connected with respectively and the locating rod (3) that struts arm (1) quadrature and be connected, 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), be connected with outward extending baseline rod (4), slidably connecting locating piece (5) and locating piece (5) on baseline rod (4) 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 the slotted hole (7) that arrange and along baseline rod (4) length direction extend corresponding to locating hole (6).
2. pedicle screw implant surgery localizer as claimed in claim 1, it is characterized in that: the cross section of described baseline rod (4) is on-circular cross-section, 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).
3. pedicle screw implant surgery localizer as claimed in claim 1, it is characterized in that: the cross section of described locating rod (3) is for circular, be connected with on baseline rod (4) and be rotationally connected piece (9), be rotationally connected piece (9) and be rotatably connected on locating rod (3) above, also be bolted with the lock(ing) bolt (10) that locking is rotationally connected piece (9) on locating rod (3).
4. as the described pedicle screw implant surgery of any one in claim 1-3 localizer, it is characterized in that: described baseline rod (4) is provided with graduation mark (11).
5. pedicle screw implant surgery localizer as claimed in claim 1, it is characterized in that: wherein one strut on arm (1) the lower registration arm (12) that is connected with the 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, and arm (1) is overlapped on lower registration arm (12) above and faying surface is provided with the 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 true CN103445854A (en) | 2013-12-18 |
| CN103445854B CN103445854B (en) | 2015-06-10 |
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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 |
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| CN (1) | CN103445854B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106037909A (en) * | 2016-05-19 | 2016-10-26 | 汤向阳 | Thoracolumbar spine vertebral pedicle screw entrance point and angle positioning device |
| CN107361837A (en) * | 2017-07-28 | 2017-11-21 | 河北瑞鹤医疗器械有限公司 | Pressurizing and propping device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040176779A1 (en) * | 2003-02-03 | 2004-09-09 | Guido Casutt | Targeting aid |
| 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 |
| CN201275138Y (en) * | 2008-10-30 | 2009-07-22 | 于杰 | Three-dimensional adjustable screw locater for vertebral pedicle |
| CN201782814U (en) * | 2010-07-28 | 2011-04-06 | 徐兆万 | Aligner of cervical pedicle screw |
| US20110172722A1 (en) * | 2005-09-29 | 2011-07-14 | Depuy Spine, Inc. | Motion Segment Repair Systems and Methods |
-
2013
- 2013-08-26 CN CN201310374995.3A patent/CN103445854B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040176779A1 (en) * | 2003-02-03 | 2004-09-09 | Guido Casutt | Targeting aid |
| CN2680212Y (en) * | 2003-09-30 | 2005-02-23 | 江永发 | Screw guiding and positioning device for vertebral arch pedicle |
| US20110172722A1 (en) * | 2005-09-29 | 2011-07-14 | Depuy Spine, Inc. | Motion Segment Repair Systems and Methods |
| 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 |
| CN201275138Y (en) * | 2008-10-30 | 2009-07-22 | 于杰 | Three-dimensional adjustable screw locater for vertebral pedicle |
| CN201782814U (en) * | 2010-07-28 | 2011-04-06 | 徐兆万 | Aligner of cervical pedicle screw |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106037909A (en) * | 2016-05-19 | 2016-10-26 | 汤向阳 | Thoracolumbar spine vertebral pedicle screw entrance point and angle positioning device |
| CN107361837A (en) * | 2017-07-28 | 2017-11-21 | 河北瑞鹤医疗器械有限公司 | Pressurizing and propping device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103445854B (en) | 2015-06-10 |
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Granted publication date: 20150610 Termination date: 20160826 |