CN100467000C - Distal lockhole positioning system for interlocking of intramedullary nail - Google Patents
Distal lockhole positioning system for interlocking of intramedullary nail Download PDFInfo
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- CN100467000C CN100467000C CN 200610161642 CN200610161642A CN100467000C CN 100467000 C CN100467000 C CN 100467000C CN 200610161642 CN200610161642 CN 200610161642 CN 200610161642 A CN200610161642 A CN 200610161642A CN 100467000 C CN100467000 C CN 100467000C
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- intramedullary nail
- interlocking
- support
- positioning system
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Abstract
A fat-end lock hole locating system for the interlocking intramedullary nail is composed of a rigid endoscope with a guide rod inserted in said interlocking intramedullary nail and connected with computer system via CCD, a CCD, a supporter with connecting part linked with said interlocking intramedullary nail, a reference rod fixed to said supporter and with deformation reference rule and locating hole or marker, and a computer system.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, especially a kind of fixing screw hole positioning device of being convenient on definite interlocking intramedullary nail, specifically a kind of distal lockhole positioning system for interlocking of intramedullary nail.
Background technology
Interlocking intramedullary nail has been widely used in treating the key fracture of elongated tubular because its good and clinical curative effect, and it has fixation, avoid fracturing axially and the generation of rotation deformity.But because interlocking intramedullary nail is subjected to influencing its insertion end bigger distortion (other end change table amount is ignored than I) can taking place of key physiological feature when key implanting, and because the existence of human body individual variation, deflection has nothing in common with each other, if on the backbone, hole according to conventional method, the hole of being bored just is difficult to aim at the lockhole on the interlocking intramedullary nail insertion end so, distal locking nail usually can't correctly be aimed at the lockhole on the nail body, so that can't fix, must reorientate boring, so not only prolonged operating time, if hole too near causing screw fixing not firm, the postoperative nail loose, move back nail, the risk of complication such as increase postoperative infection chance.Therefore, exactly the distal lockhole on the interlocking intramedullary nail being positioned is to improve operation efficient, improve the key of operation quality, for this reason, vast orthopaedics worker is developing various external positioners and is overcoming the inaccurate problem of boring that causes because of the pinning distortion, what positioner commonly used at present adopted mostly is in-vitro simulated standard curvature location, but because the elongated tubular backbone has the physiology curvature, and individual variation is very big, so can't formulate unified standard, must cause the location inaccurate.For this reason, the applicant had once utilized the reflective principle design of optics a kind of optical positioning apparatus (see application number for details be 200510041034.6 application for a patent for invention), but this positioner is because complex structure, especially to the requirement height of laser generator, light reflection restraining factors are many, amount of calculation is bigger, design of follow-up system and manufacturing be difficulty comparatively, therefore its practicality is not high, develop a cover precision height for this reason, simple in structure, the navigation system of utilizing optical principle easy to use is still the task of top priority.
Summary of the invention
The complex structure that the objective of the invention is to exist, make Installation and Debugging inconvenience, problem that practicality is not strong, invent a kind of simple in structurely, make and easy to use the distal lockhole positioning system for interlocking of intramedullary nail that positioning accuracy is high at present optical positioning system.
Technical scheme of the present invention is:
A kind of interlocking intramedullary nail distal lockhole positioner, it is characterized in that it is mainly by rigid endoscope 2, CCD3, support 4, reference lever 5, computer system 6 is formed, support 4 is provided with the connector 11 that links to each other with interlocking intramedullary nail 1, rigid endoscope 2 stretches into the interlocking intramedullary nail 1 after connector 11 is passed in the outside of support 4, CCD3 is installed on the eyepiece end of rigid endoscope 2 and with computer system 6 and links to each other, in the end of interlocking intramedullary nail 1, position reference thing 7 is installed away from support 4, one end of reference lever 5 also be fixedly connected on the support 4 and its centrage parallel with the centrage of interlocking intramedullary nail 1, on the end of reference lever 5 away from support deflection reference scale 8 is installed, reference scale 8 parallels with support 4 and links to each other with the rigid section of reference lever 5 and do not produce displacement with the deformation section of reference lever 5; Be provided with on the reference lever 5 with interlocking intramedullary nail 1 on install the through hole 9 corresponding sleeve pipes of hold-down screw or indicate 10.
Described be installed in the interlocking intramedullary nail 1 reference substance 7 or for luminous reference substance, or for not luminous reference substance, when it was luminous reference substance, described rigid endoscope 2 was not with illuminator, when reference substance 7 during for luminous reference substance not, described rigid endoscope 2 has illuminator.
Described reference lever 5 is made up of rigid section 501 and deformable segments 502, and wherein rigid section 501 links to each other with support 4, and rigid section 501 also is rigidly connected one and is used to install the connecting rod 503 of reference scale 8, described sleeve pipe or indicate that 10 are positioned on the deformable segments 502.
The length of described rigid section 501 is 10-15cm.
Described connector 11 and the support 4 whole tubular structures that link to each other, it can be connected with interlocking intramedullary nail 1 by conventional pin, pore structure or key, the realization of groove structure.
Beneficial effect of the present invention:
1, the data-handling capacity that the present invention is powerful with numeral taking photo technology and computer combines, thereby accurately determine the displacement of insertion end screw hole by the picture displacement of analyzing main deformation direction, computer programming is simple, can shorten operating time greatly, alleviate patient's misery, can substitute existing X-ray localization method fully, avoid operative doctor to be subjected to x-ray radiation.
2, compare with laser locating apparatus, the present invention has simple in structure, and is easily manufactured, and rigid endoscope, CCD photographic head, computer etc. are very sophisticated product and technology.
3, easy to use, surgical staff both can obtain the displacement of locking nail hole easily by computer screen, by the identical displacement of the projecting end of mobile reference lever, the sleeve pipe on the control reference bar or similarly the position of witness marker can implement boring easily.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is that the A of Fig. 1 is to view.
The structural representation of the interlocking intramedullary nail that Fig. 3 and the present invention match.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As shown in Figure 1, 2.
A kind of distal lockhole positioning system for interlocking of intramedullary nail; it is mainly by rigid endoscope 2 (should adopt the endoscope of rigid structure); CCD3 (charge-coupled image sensor); support 4; reference lever 5; computer system 6 is formed; support 4 is provided with the connector 11 that links to each other with interlocking intramedullary nail 1 (as shown in Figure 3); this connector 11 is and the support 4 whole tubular structures that link to each other; it can be by conventional pin; pore structure or key; the groove structure realizes realizing being connected with interlocking intramedullary nail 1; rigid endoscope 2 stretches into the interlocking intramedullary nail 1 after connector 11 is passed in the outside of support 4; CCD3 is installed between the eyepiece and computer of rigid endoscope 2; in the end of interlocking intramedullary nail 1, position reference thing 7 is installed away from support 4; this reference substance 7 can adopt luminous reference substance; also can adopt not luminous reference substance; when adopting luminous ginseng person's thing; described rigid endoscope 2 can be with illuminator; when reference substance 7 adopts not luminous reference substance; this has low-light illuminator (being made up of battery and light emitting diode and circuit thereof) rigid endoscope used 2; so that can normally obtain the image of object of reference; rigid endoscope 2 is sent into the image of reference substance 7 and is converted the signal that computer system 6 can be discerned among the CCD3 to by eyepiece, as shown in Figure 1.One end of reference lever 5 also be fixedly connected on the support 4 and its centrage parallel with the centrage of interlocking intramedullary nail 1, on the end of reference lever 5, deflection reference scale 8 is installed away from support, reference lever 5 is made up of rigid section 501 and deformable segments 502, wherein rigid section 501 links to each other with support 4, rigid section 501 also is rigidly connected one and is used to install the connecting rod 503 of reference scale 8, as shown in Figure 2, and described sleeve pipe or indicate that 10 are positioned on the deformable segments 502, as Fig. 1, shown in 2.
Using method of the present invention is:
The interlocking intramedullary nail 1 that at first will be prepared as patient's implantation before operation is installed on the support 4, rigid endoscope 2 is stretched in the picture position information via CCD3 conversion back input computer that obtains reference substance 7 in preceding interlocking intramedullary nail 1 insertion end of distortion the interlocking intramedullary nail 1 from the outside of support 4, take out rigid endoscope 2 then, utilizing implanting instrument that interlocking intramedullary nail 1 is inserted needs among the fixed backbone, because the deflection near the interlocking intramedullary nail that inserts mouthful position is little, therefore can be by the position that method is determined lockhole of contrasting of routine, it specifically determines method no longer narration same as the prior art.After interlocking intramedullary nail 1 is inserted the backbone, again foregoing rigid endoscope 2 is stretched into the interlocking intramedullary nail 1 from the outside of support 4, obtain the interlocking intramedullary nail 1 after the distortion insertion end reference substance 7 location drawing picture and handle by sending in the computer system 6 after the CCD3 conversion process, under the control of software, calculate the displacement of lockhole automatically, then rigid endoscope 2 is taken out from interlocking intramedullary nail 1 sterilization standby.Only need directly the cantilever end of reference lever 5 to be done the displacement of same amount this moment, displacement can be determined by the numerical value of reference scale 8, the key boring of position alignment human body of joining locating sleeve 10 on the deformable segments 502 of the reference lever 5 after the accurate displacement (or similarly telltale mark) then can process with interlocking intramedullary nail 1 on the accurate relative distal locking nail mounting hole of lockhole.
Claims (5)
1, a kind of distal lockhole positioning system for interlocking of intramedullary nail, it is characterized in that it comprises rigid endoscope (2), CCD (3), support (4), reference lever (5) and computer system (6), support (4) is provided with the connector (11) that links to each other with interlocking intramedullary nail (1), rigid endoscope (2) stretches into the interlocking intramedullary nail (1) after connector (11) is passed in the outside of support (4), CCD (3) is installed on the eyepiece end of rigid endoscope (2) and with computer system (6) and links to each other, in the end of interlocking intramedullary nail (1), position reference thing (7) is installed away from support (4), one end of reference lever (5) is fixedly connected on also that support (4) is gone up and its centrage is parallel with the centrage of interlocking intramedullary nail (1), on the end of reference lever (5) away from support deflection reference scale (8) is installed; Be provided with on the reference lever (5) with interlocking intramedullary nail (1) on install the corresponding sleeve pipe of lockhole (9) or the sign (10) of pinning.
2, distal lockhole positioning system for interlocking of intramedullary nail according to claim 1, it is characterized in that described be installed in the interlocking intramedullary nail (1) reference substance (7) or for luminous reference substance, or be not luminous reference substance, when it is luminous reference substance, described rigid endoscope (2) is not with illuminator, when reference substance (7) during for luminous reference substance not, described rigid endoscope (2) has illuminator.
3, distal lockhole positioning system for interlocking of intramedullary nail according to claim 1, it is characterized in that described reference lever (5) is made up of rigid section (501) and deformable segments (502), wherein rigid section (501) links to each other with support (4), the connecting rod (503) that rigid section (501) also is rigidly connected one and is used to install reference scale (8), described sleeve pipe or sign (10) are positioned on the deformable segments (502).
4, distal lockhole positioning system for interlocking of intramedullary nail according to claim 3, the length that it is characterized in that described rigid section (501) is 10-15cm.
5, distal lockhole positioning system for interlocking of intramedullary nail according to claim 1 is characterized in that the tubular structure of described connector (11) for linking to each other with support (4) integral body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610161642 CN100467000C (en) | 2006-12-29 | 2006-12-29 | Distal lockhole positioning system for interlocking of intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610161642 CN100467000C (en) | 2006-12-29 | 2006-12-29 | Distal lockhole positioning system for interlocking of intramedullary nail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN100998518A CN100998518A (en) | 2007-07-18 |
| CN100467000C true CN100467000C (en) | 2009-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610161642 Expired - Fee Related CN100467000C (en) | 2006-12-29 | 2006-12-29 | Distal lockhole positioning system for interlocking of intramedullary nail |
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| Country | Link |
|---|---|
| CN (1) | CN100467000C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104523329B (en) * | 2014-12-23 | 2017-10-10 | 王建明 | A kind of bone surgery positioner |
| CN106420037B (en) * | 2016-11-03 | 2023-09-29 | 黄雷 | Intramedullary nail guiding instrument |
| US10695135B2 (en) * | 2016-11-08 | 2020-06-30 | Kaohsiung Medical University | Non-invasive positioning system and method for screwing and fixing a bone |
| CN113143438B (en) * | 2021-03-01 | 2023-06-23 | 中国人民解放军总医院第四医学中心 | Percutaneous lumbar vertebrae vertebral plate articular process screw targeting device |
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2006
- 2006-12-29 CN CN 200610161642 patent/CN100467000C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN100998518A (en) | 2007-07-18 |
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Granted publication date: 20090311 Termination date: 20111229 |