CN2398981Y - Reduction fixed bone orthopedic appts. - Google Patents
Reduction fixed bone orthopedic appts. Download PDFInfo
- Publication number
- CN2398981Y CN2398981Y CN 99256980 CN99256980U CN2398981Y CN 2398981 Y CN2398981 Y CN 2398981Y CN 99256980 CN99256980 CN 99256980 CN 99256980 U CN99256980 U CN 99256980U CN 2398981 Y CN2398981 Y CN 2398981Y
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- osteological
- fixing
- orthopaedical
- reducing
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- 230000009467 reduction Effects 0.000 title abstract description 3
- 210000000988 bone and bone Anatomy 0.000 title abstract 2
- 230000000399 orthopedic effect Effects 0.000 title 1
- 238000005452 bending Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 2
- 230000002146 bilateral effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 239000007943 implant Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 231100000915 pathological change Toxicity 0.000 description 3
- 230000036285 pathological change Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 210000000080 chela (arthropods) Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 206010041569 spinal fracture Diseases 0.000 description 2
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 1
- 206010033892 Paraplegia Diseases 0.000 description 1
- 208000020307 Spinal disease Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 230000036244 malformation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
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Abstract
The utility model relates to a reduction fixing bone shape correcting device and comprises a fixing screw nail and a pushing and pulling force screw nail. A longitudinal connecting rod is connected between the fixing screw nail and the pushing and pulling force screw nail, and one end of the longitudinal connecting rod is provided with an end head with a through hole. The end head is connected with a polished rod, and the pushing and pulling force screw nail penetrates from the through hole of the end head of the longitudinal connecting rod. A gap is arranged between the through hole of the end head of the longitudinal connecting rod and the pushing and pulling force screw nail, and a fastening component causes the pushing and pulling force screw nail to be fixed. The upper end of the fixing screw nail is provided with a sliding path, and the polished rod penetrates from the sliding path to be locked by a locking apparatus. The projection of the extension line of the fixing screw nail and the extension line of the pushing and pulling force screw nail on the flat surface provided with a physiological curvature shaft line presents an included angle.
Description
This utility model relates to a kind of Osteological device in the medical instruments field, especially for spinal trauma or the malformation correction especially spondylolishesis fixed Osteological device that resets.
Spinal surgery is a field that has developed rapidly in the orthopaedics field since the eighties.Merge problems such as paraplegia, spinal column regression deformity, slippage for a long time at spinal fracture, variously design implants based on pedicle screw and constantly come out.But the biomechanics characteristic in the anatomic form of spinal column complexity and function and the three dimensions, make the design of pedicle screw implants again and use and exist outstanding difficult point, be the three-dimensional mechanical characteristic of spinal column, require implants to have multiple corrective force and three dimensions adjustability.The Osteological device that is used for the treatment of at present spinal disease in the world has representational have U.S. AO system and Steffee fluting steel plate and screw system.Steffee fluting steel plate and screw system are simple, firm, but have lost the three dimensions adjustability; AO system implants becomes the adjustable implants of real three dimensions with the labyrinth of universal joint, and the spinal fracture that makes various complex shapes is under the effect of the multiple corrective force of three dimensions, and anatomical reduction becomes possibility.But the labyrinth of universal joint has brought complicated operation, the easily loosening major defect in fixing back, thereby resetting of obtaining is lost just, loses acquired therapeutic effect.As a kind of improvement of said method, ZL93213258.8 discloses a kind of angle screw bilateral break-in nut Osteological device, includes an angle screw, bilateral break-in nut, fluting bolt and push-pull effort screw.The flat head of angle screw has U type opening and bends an angle, bilateral break-in nut is a hexahedron, respectively open a circular hole on its three faces, perforation can mutually, fluting bolt one end is put into flat U type opening, and both become the angle greater than 90 degree, and the bolt other end stretches in another circular hole of bolt, one section rib-loop tail is extended in the turret head upper end of push-pull effort screw, two through holes in addition of its break-through nut.After being connected and fixed, screw can be that 360 degree circular motion are done in the center of circle with the bolt shaft.This Osteological device has possessed three-dimensional multiple corrective force, and the only fixedly spinal segments of pathological changes and an adjacent joint spinal segments thereof.Though this improvement has greatly improved, but still exist some not make part.At first, after angle screw and push-pull effort screw are fixed on the spinal segment that becomes sick and the adjacent spinal segment thereof, when being connected two screws on bilateral break-in nut and the fluting bolt, need to regulate the distance and the angle between the place of being connected and fixed of two screws, need use two spanners, to be used for fixing in two nuts of angle screw earlier, be screwed into the appropriate location, the termination of angle screw is resisted against on this nut, another nut of turn is resisted against on the another side of angle screw again, simultaneously reverse then turn spanner, two nuts are fixed on the angle screw on the fluting bolt, from the aforesaid operations method as can be seen, outfit is many, complex operation step, required time is long, has increased operating difficulty.And, be plane contact between this orthotic push-pull effort screw and the bilateral break-in nut, can not allow the push-pull effort screw that certain low-angle inclination is arranged, also giving to perform a surgical operation makes troubles.Because patient's spinal lesion situation is very complicated, when two screws are implanted spinal column, want to be connected and fixed the adjustment that two screws need be done bigger distance and angle, the difficulty of operation is very big.Because the existence of above-mentioned defective is arranged, reduce the effect of terrible operation again.
The purpose of this utility model provides a kind of Osteological reducing and fixing orthopaedical device, be connected and fixed and adopt slip positioning and locking mode between the connecting rod of screw and motive force screw and the hold-down screw, and contact for sphere between push-pull effort screw and the connecting rod, make operation technique simple, convenient, reduced the difficulty of operation.
This utility model is achieved in that a kind of Osteological reducing and fixing orthopaedical device, include a hold-down screw, push-pull effort screw, be connected with a longitudinal rod between hold-down screw and the push-pull effort screw, described longitudinal rod one end is made as the termination that has through hole, is connected with one section polished rod on the termination; The push-pull effort screw penetrates from the through hole of longitudinal rod termination, the through hole of longitudinal rod termination and push-pull effort screw matched in clearance, and a securing member is fixed the push-pull effort screw; The hold-down screw upper end is provided with a slideway, and polished rod wears from slideway, and is locked by a locking device; The projection of the extended line of described hold-down screw extended line and push-pull effort screw on plane, physiological bending axis place is an angle.The slideway of described hold-down screw upper end can be open slot, and described locking device is the slip positioning and locking device.The opening of described open slot is positioned at the upper surface or the side of hold-down screw termination.Described slideway open slot inwall is provided with guide locating device provided.Described guide locating device provided chimeric with the slip positioning and locking device, the holding device of slip positioning and locking device is resisted against described polished rod on the bottom surface of open slot.The holding device of described locking device can be jackscrew.Describedly guide locating device providedly be provided with a direction recess or the protruding key that leads; Lead protruding key or direction recess of this direction recess or lead protruding key and slip positioning and locking device is corresponding chimeric.That the cross section of the described direction recess or the protruding key that leads can be is square, wedge shape, triangle, semicircle or arc.The described chimeric direction recess or the protruding key that leads mutually can be the parallel longitudinal groove, and it is big also can be an end opening, vertical wedge-shaped slot that an end opening is little.Lateral surface with the slip positioning and locking device on the described slideway open slot inwall is provided with block chalaza.Described block chalaza can be corresponding concave point or salient point on the lateral surface contact site of salient point on the slideway open slot inwall or concave point and slip positioning and locking device.The angle of described hold-down screw extended line and the angle that projection be of push-pull effort screw extended line on plane, physiological bending axis place is 0 ° to 60 °.The termination of described hold-down screw and threaded rod are the angle setting; The termination of described longitudinal rod and round bar are angle setting and curved arc transition.Be installed with an expansion loop in the through hole of described longitudinal rod termination.Described expansion loop is that sphere contacts with contact surface on the push-pull effort screw.Contact for sphere between the contact surface on the through hole end face of described longitudinal rod termination and the securing member of push-pull effort screw.The through hole end face of described longitudinal rod termination is that sphere contacts with contact surface on the push-pull effort screw.The through hole end face of described longitudinal rod termination has a segment concave surface, and a sphere boss is arranged on the contact surface of push-pull effort screw.There is a sphere boss through hole upper surface of described longitudinal rod termination, and the contact surface on the securing member of push-pull effort screw has a segment concave surface.The threaded end of described hold-down screw and push-pull effort screw can have the self tapping structure.
The utlity model has following advantage:
1, adopts a slip positioning and locking device, by the lateral surface on the slip positioning and locking device be located at hold-down screw termination openings groove inwall on guide locating device provided between cooperate, polished rod on the connecting rod is positioned in the open slot on the hold-down screw termination, again by the locking that is fixed of a holding device.When connecting two screws, can be easy to the connecting rod location, be locked on the hold-down screw, by a clamping clip or strut pincers and can regulate distance between two screws and rotatable arbitrarily angled easily.Only need screw holding device in the time of fixedly gets final product.Said structure is being installed, is locating, tightens simple to operate in the process, easy, has reduced operating difficulty.
2, a block chalaza is respectively arranged at slip positioning and locking device two lateral surface tops, respectively there is a block chalaza to match with the relevant position of open slot two medial surface of described hold-down screw termination, when connecting longitudinal rod and hold-down screw, slip positioning and locking device firm position, difficult slip comes off.
3, in an embodiment of the present utility model, the groove that is located on hold-down screw termination openings groove two medial surface can be the identical parallel slot of both ends open size, the slip positioning and locking device can import from the two ends of notch, in operation, increased the selection of installation direction, avoided in operation, being subjected to the restriction at some position and situation about can't install.
4, the push-pull effort screw is the sphere contact with contacting of longitudinal rod termination, there is a boss platform upper surface of the hole wall of longitudinal rod termination, is located on the locking member of the push-pull effort screw that penetrates this hole and has a circular concave to match with this boss platform on the adjacent side end face with this boss platform.There is a circular concave lower surface of longitudinal rod termination, matches with the boss platform of the grain-clamping table upper surface of the push-pull effort screw that passes this hole, can allow the push-pull effort screw under the situation of inclination certain angle with its locking.
5, this utility model adopts titanium steel or titanium alloy steel material, and is in light weight, and implant into body is highly profitable.
Further describe this utility model below in conjunction with accompanying drawing:
Fig. 1 is the exploded view of the angle screw bilateral break-in nut Osteological device of prior art.
Fig. 2 is the overall diagram of the angle screw bilateral break-in nut Osteological device of prior art.
Fig. 3 is an installation diagram of the present utility model.
Fig. 4 is a kind of user mode figure of the present utility model.
Fig. 5 is another kind of user mode figure of the present utility model.
Fig. 6 is an another kind of embodiment of the present utility model.
Fig. 7 is the third embodiment of the present utility model.
Fig. 8 is the axonometric chart of hold-down screw of the present utility model.
Fig. 9 is the front view of hold-down screw of the present utility model.
Figure 10 is the axonometric chart of this utility model slip positioning and locking device open mode.
Figure 11 is the front view of this utility model slip positioning and locking device open mode.
Figure 12 is the axonometric chart of this utility model slip positioning and locking device locking state.
The axonometric chart of this this utility model longitudinal rod of Figure 13.
Figure 14 is a push-pull effort screw of the present utility model.
Figure 15 is the hold-down screw that has angle of the present utility model.
Figure 16 is an embodiment of hold-down screw of the present utility model.
Figure 17 is an embodiment of hold-down screw of the present utility model.
Figure 18 be hold-down screw of the present utility model an embodiment.
Figure 19 be hold-down screw of the present utility model an embodiment.
Figure 20 is first kind of angle adjustment schematic diagram of the present utility model.
Figure 21 is second kind of angle adjustment schematic diagram of the present utility model.
Consult piece number brief description among the figure:
1. fluting bolt 11. angle screws 12,13. nuts 14. bilateral break-in nuts 15. have the push-pull effort screws now; 2. hold-down screw 21. open slots 22. grooves 23. block chalazas 24. open slot bottom surfaces; 3. slip positioning and locking device 31. projections 32. lower surfaces 33. block chalazas, 34. jackscrews; 4. longitudinal rod 41. polished rods 42. terminations 43. sphere boss, 44. through holes, 45. segment concave surfaces, 46. expansion loops; 5. threaded rod 52. grain-clamping tables 54. sphere boss 53. foot pieces of push-pull effort screw 51. push-pull effort screws; 6. securing member 61. segment concave surfaces; 7 hold-down screws, 70. hold-down screw terminations, 71. open slots, 72. protruding keys; 81. open slots, 82. inclined-planes, 8 hold-down screws, 80. hold-down screw terminations; Hole, 91. road, 9 hold-down screws, 90. hold-down screw terminations 92. screwed holes; 10 hold-down screws, 100. hold-down screw terminations, 101. open slots.
See also Fig. 1 and Fig. 2, angle screw 11 is fixed on the fluting bolt 1 by two nuts 12,13, and existing push-pull effort screw is connected on the bilateral break-in nut 14, and the turret head of existing push-pull effort screw and the contact surface of bilateral break-in nut are plane contact.
See also Fig. 3, Fig. 4 and Fig. 5, be installation diagram of the present utility model and different user mode figure.One end of longitudinal rod 4 is made as termination with holes 42, is connected with an end polished rod 41 on the termination.Polished rod 41 is located in the open slot 21 of hold-down screw 2 terminations, by a slip positioning and locking device 3 location and locking.The foot piece of push-pull effort screw 5 penetrates in the through hole 44 of termination 42 of longitudinal rod 4, by 6 lockings of a locking member.Gapped between the through hole 44 of longitudinal rod 4 terminations 42 and the push-pull effort screw 5, can make between the axis of push-pull effort screw 5 and through hole 44 has an angle.For sphere contacts, through hole 44 end faces on the termination 42 of longitudinal rod 4 have a segment concave surface 43, and a sphere boss 54 is arranged on the contact surface of push-pull effort screw 5 between through hole 44 end faces on the termination 42 of push-pull effort screw 5 and longitudinal rod 4.Also for sphere contacts, the end face of the through hole 44 on the termination 42 of longitudinal rod 4 has a sphere boss 43 between the termination 42 of locking member 6 and longitudinal rod 4, and the contact surface on the securing member 6 of push-pull effort screw has a segment concave surface 61.At contact surface is under the situation of sphere contact, push-pull effort screw 5 can with the axis of through hole 44 in certain low-angle location that has a down dip, the state of inclination is as shown in Figure 4 and Figure 5.
See also Fig. 6, be another kind of embodiment of the present utility model.The open slot of hold-down screw 10 is positioned at the side, termination, and the threaded rod of screw and the termination of screw are the angle setting.The structure of hold-down screw 10 can be referring to Figure 19.The polished rod 41 of longitudinal rod 4 is a straight-bar.The two screw extended lines angle that projection was on plane, physiological bending axis place can be contributed jointly by the angle that the termination was of the threaded rod of hold-down screw and hold-down screw and push-pull effort screw and the longitudinal rod termination formed low-angle of matched in clearance and form.Other situations and first kind of embodiment such as Fig. 3, Fig. 4 and shown in Figure 5 identical.
See also Fig. 7, the third embodiment of the present utility model.The open slot of hold-down screw 10 is positioned at the side, termination, and the threaded rod of screw and the termination of screw are the angle setting.The structure of hold-down screw 10 can be referring to Figure 19.The polished rod 41 of longitudinal rod 4 is angle setting and curved arc transition with the termination 42 that has through hole 44.The two screw extended lines angle that projection was on plane, physiological bending axis place can be formed by three parts, is promptly contributed jointly by the polished rod 41 of the angle that the termination was of the threaded rod of hold-down screw and hold-down screw, longitudinal rod 4 and termination 42 angulations that have through hole 44 and push-pull effort screw and the longitudinal rod termination formed low-angle of matched in clearance to form.Other situations and first kind of embodiment such as Fig. 3, Fig. 4 and shown in Figure 5 identical.
See also Fig. 8 and Fig. 9, Fig. 3 is the axonometric chart of hold-down screw of the present utility model.There is a U type open slot 21 termination of hold-down screw 2 upper ends, respectively is provided with a groove 22 on two medial surface of open slot 21, and this groove is as the guider of slip positioning and locking device 3, and is chimeric with the lateral surface of slip positioning and locking device 3.On two medial surface tops of open slot 21 and the block chalaza 23 of an indent arranged above groove 22, the block chalaza 33 of the evagination on the lateral surface of this block chalaza and slip positioning and locking device 3 engages.Fig. 4 is a front view on the termination of hold-down screw 3, and the bottom surface 24 of the open slot 21 on the termination is an arcwall face.Implant the spinal segments of pathological changes when the push-pull effort screw, when hold-down screw is implanted the sections adjacent with the pathological changes spinal segments, borehole jack on the longitudinal rod termination is gone on the foot piece of push-pull effort screw, again the polished rod of longitudinal rod is penetrated in the open slot 21 on the termination of hold-down screw 2, the slip of slip positioning and locking device is imported in the open slot 21, and the projection on the slip positioning and locking device lateral surface is embedded in the groove 22.Use a clamping clip to clamp the termination of slip positioning and locking device and hold-down screw, the block chalaza 33 of the evagination on the block chalaza 23 that makes indent on two medial surface of open slot 21 and the lateral surface of slip positioning and locking device 3 is fastened togather, the positioning and locking device that slides this moment can not slide again, and the polished rod on the longitudinal rod is positioned in the open slot 21.By a clamping clip or strut pincers and can regulate distance between hold-down screw and push-pull effort screw and rotatable arbitrarily angled at an easy rate, when regulating distance and angle, holding device holds out against polished rod on the bottom surface of open slot 21.
See also Figure 10, Figure 11, Figure 12, slip positioning and locking device 3 of the present utility model is a slide block.Device respectively has a projection 32 on 3 two outsides, and this projection 32 matches with the groove 22 of hold-down screw 2 upper end open grooves 21, and the polished rod 41 of longitudinal rod 4 is positioned between the arc lower surface 32 of open slot 21 and slip positioning and locking device 3.This carriage 3 is provided with a jackscrew 34 as holding device, polished rod 41 is withstood on the lower arcuate surface 24 of open slot 21, finishes lock out action.
See also Figure 13, Figure 14, an end of longitudinal rod 4 of the present utility model is provided with holes 44 termination 42, is connected with one section polished rod 41 on the termination 42.Polished rod 41 is positioned and is locked between the lower surface 32 of the open slot 21 of hold-down screw 2 and carriage 3, is fastened together with hold-down screw.Be installed with an expansion loop 46 in the through hole 44, can make longitudinal rod 4 and push-pull effort screw 5 under the locking of securing member 6, connect more fastening.Cooperate for sphere between the termination 42 that is provided with through hole 44 and push-pull effort screw 5 and the securing member 6 thereof.The upper surface of termination 42 is provided with sphere boss 43.The lower surface is provided with segment concave surface 45, the afterbody 52 of push-pull effort screw 5 can penetrate in the hole 44, the upper surface of the grain-clamping table 52 of push-pull effort screw 5 is provided with sphere boss 54, segment concave station 44 on the lower surface of sphere boss 54 and termination 42 matches, be the sphere contact, can allow to follow closely 5 in certain low-angle location positioning that tilts.There is a segment concave surface 61 lower surface of the securing member 6 of push-pull effort screw 5, and segment concave surface 61 cooperates with the sphere boss 43 of the upper surface of longitudinal rod termination 42, can allow push-pull effort screw 5 in certain low-angle position that tilts it to be fastened on the longitudinal rod 4.
See also Figure 15, have the hold-down screw 2 of angle for this utility model.Be an angle [alpha] setting between the termination of hold-down screw 2 and the threaded rod, this angle [alpha] can participate in the formation of the angle of two screw extended lines in assembling.
See also Figure 16, be the hold-down screw 7 of this utility model one embodiment.One open slot 71 is arranged on the termination 70, and a protruding key 72 is arranged at open slot two medial surface tops, protruding key 72 can with the groove fit of slip positioning and locking device lateral surface, finish location to the longitudinal rod polished rod.
See also Figure 17, be the hold-down screw 8 of this utility model one embodiment.One open slot 81 is arranged on the termination 80, and 81 liang of medial surface of open slot are the inclined-plane 82 that the surface tilts to the open slot bottom surface.Inclined-plane 82 can be abutted together with the lateral surface of corresponding inclination on the slip positioning and locking device lateral surface, finishes the location to the longitudinal rod polished rod.
See also Figure 18, be the hold-down screw 9 of this utility model one embodiment.The chute of termination 90 can be a hole, road 91 that connects, and a screwed hole 92 is arranged on 91 walls of duct, and polished rod can be located in 92, finishes the location.In the screwed hole 92 jackscrew can be arranged, polished rod be withstood on another medial surface in hole on the chute, lock.
See also Figure 19, be 10 of the hold-down screw of this utility model one embodiment, the open slot 101 of termination 100 is located at the side, termination.
See also Figure 20, be first kind of angle adjustment schematic diagram of the present utility model.Hold-down screw 2 is connected with longitudinal rod 4, and push-pull effort screw 5 cooperates with the via clearance of the termination of longitudinal rod 4, and push-pull effort screw 5 can be done the taper seat rotation under certain low-angle.Be the angle setting between the polished rod of longitudinal rod and the termination and a curved arc is arranged.The angle of the polished rod of longitudinal rod and the extended line of termination is a, and push-pull effort screw 5 is under naturalness, and its extended line has an identical angle a with the extended line of hold-down screw 2; When push-pull effort screw 5 can be done the taper seat rotation under certain low-angle, the maximum of the formed angle of extended line of the extended line of push-pull effort screw 5 and hold-down screw 2 was a1, and minima is a2.
See also Figure 21, be second kind of angle adjustment schematic diagram of the present utility model.Hold-down screw 2 is connected with longitudinal rod 4, and it is a that the termination of hold-down screw 2 and threaded rod form an angle; Push-pull effort screw 5 cooperates with the via clearance of the termination of longitudinal rod 4, and push-pull effort screw 5 can be done the taper seat rotation under certain low-angle.Push-pull effort screw 5 is under naturalness, and its extended line has an identical angle a with the extended line of hold-down screw 2; When push-pull effort screw 5 can be done the taper seat rotation under certain low-angle, the maximum of the formed angle of extended line of the extended line of push-pull effort screw 5 and hold-down screw 2 was a1, and minima is a2.
Claims (21)
1, a kind of Osteological reducing and fixing orthopaedical device, include a hold-down screw, push-pull effort screw, be connected with a longitudinal rod between hold-down screw and the push-pull effort screw, it is characterized by: described longitudinal rod one end is made as the termination that has through hole, is connected with one section polished rod on the termination; The push-pull effort screw penetrates from the through hole of longitudinal rod termination, the through hole of longitudinal rod termination and push-pull effort screw matched in clearance, and a securing member is fixed the push-pull effort screw; The hold-down screw upper end is provided with a slideway, and polished rod wears from slideway, and is locked by a locking device; The projection of the extended line of the extended line of described hold-down screw and push-pull effort screw on plane, physiological bending axis place is an angle.
2, a kind of Osteological reducing and fixing orthopaedical device as claimed in claim 1 is characterized by: the slideway of described hold-down screw upper end can be open slot, and described locking device is the slip positioning and locking device.
3, a kind of Osteological reducing and fixing orthopaedical device as claimed in claim 2 is characterized by: the opening of described open slot is positioned at the upper surface or the side of hold-down screw termination.
4, as claim 2 or 3 described a kind of Osteological reducing and fixing orthopaedical devices, it is characterized by: described slideway open slot inwall is provided with guide locating device provided.
5, a kind of Osteological reducing and fixing orthopaedical device as claimed in claim 4 is characterized by: described guide locating device provided chimeric with the slip positioning and locking device, the holding device of slip positioning and locking device is resisted against described polished rod on the bottom surface of open slot.
6, as claim 1 or 5 described a kind of Osteological reducing and fixing orthopaedical devices, it is characterized by: the holding device of described locking device can be jackscrew.
7, as claim 4 or 5 described a kind of Osteological reducing and fixing orthopaedical devices, it is characterized by: describedly guide locating device providedly be provided with a direction recess or the protruding key that leads; Lead protruding key or direction recess of this direction recess or lead protruding key and slip positioning and locking device is corresponding chimeric.
8, a kind of Osteological reducing and fixing orthopaedical device as claimed in claim 7 is characterized by: the cross section of the described direction recess or the protruding key that leads can be square, wedge shape, triangle, semicircle or arc.
9, a kind of Osteological reducing and fixing orthopaedical device as claimed in claim 7 is characterized by: the described chimeric direction recess or the protruding key that leads mutually can be the parallel longitudinal groove, and it is big also can be an end opening, vertical wedge-shaped slot that an end opening is little.
10, as claim 5 or 7 described a kind of Osteological reducing and fixing orthopaedical devices, it is characterized by: the lateral surface with the slip positioning and locking device on the described slideway open slot inwall is provided with block chalaza.
11 a kind of Osteological reducing and fixing orthopaedical devices as claimed in claim 10 is characterized by: described block chalaza can be corresponding concave point or salient point on the lateral surface contact site of salient point on the slideway open slot inwall or concave point and slip positioning and locking device.
12, a kind of Osteological reducing and fixing orthopaedical device as claimed in claim 1 is characterized by: the angle of described hold-down screw extended line and the angle that projection be of push-pull effort screw extended line on plane, physiological bending axis place is 0 ° to 60 °.
13, as claim 1 or 12 described a kind of Osteological reducing and fixing orthopaedical devices, it is characterized by: the termination of described hold-down screw and threaded rod are the angle setting.
14, as claim 1 or 12 described a kind of Osteological reducing and fixing orthopaedical devices, it is characterized by: the termination of described longitudinal rod and round bar are angle setting and curved arc transition.
15, a kind of Osteological reducing and fixing orthopaedical device as claimed in claim 1 is characterized by: be installed with an expansion loop in the through hole of described longitudinal rod termination.
16, a kind of Osteological reducing and fixing orthopaedical device as claimed in claim 15 is characterized by: described expansion loop is that sphere contacts with contact surface on the push-pull effort screw.
17, a kind of Osteological reducing and fixing orthopaedical device as claimed in claim 1 is characterized by: contact for sphere between the contact surface on the through hole end face of described longitudinal rod termination and the securing member of push-pull effort screw.
18, a kind of Osteological reducing and fixing orthopaedical device as claimed in claim 1 is characterized by: the through hole end face of described longitudinal rod termination is that sphere contacts with contact surface on the push-pull effort screw.
19, a kind of Osteological reducing and fixing orthopaedical device as claimed in claim 18 is characterized by: the through hole end face of described longitudinal rod termination has a segment concave surface, and a sphere boss is arranged on the contact surface of push-pull effort screw.
20, a kind of Osteological reducing and fixing orthopaedical device as claimed in claim 18 is characterized by: there is a sphere boss through hole upper surface of described longitudinal rod termination, and the contact surface on the securing member of push-pull effort screw has a segment concave surface.
21, as the described a kind of Osteological reducing and fixing orthopaedical device of above-mentioned arbitrary claim, it is characterized by: the threaded end of described hold-down screw and push-pull effort screw can have the self tapping structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99256980 CN2398981Y (en) | 1999-12-15 | 1999-12-15 | Reduction fixed bone orthopedic appts. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99256980 CN2398981Y (en) | 1999-12-15 | 1999-12-15 | Reduction fixed bone orthopedic appts. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2398981Y true CN2398981Y (en) | 2000-10-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99256980 Expired - Fee Related CN2398981Y (en) | 1999-12-15 | 1999-12-15 | Reduction fixed bone orthopedic appts. |
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| CN (1) | CN2398981Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105232137A (en) * | 2015-10-29 | 2016-01-13 | 山东航维骨科医疗器械股份有限公司 | Anti-loosing minimally-invasive U-shaped pedicle screw |
| CN105326546A (en) * | 2014-08-11 | 2016-02-17 | 天津康立尔生物科技有限公司 | Pedicle screw system |
| CN105342677A (en) * | 2015-11-25 | 2016-02-24 | 山东航维骨科医疗器械股份有限公司 | Pedicle screw |
| CN105342684A (en) * | 2015-10-29 | 2016-02-24 | 山东航维骨科医疗器械股份有限公司 | U-shaped pedicle screw |
| CN107440776A (en) * | 2017-07-20 | 2017-12-08 | 南京市第医院 | A kind of inner fixing device of the new lag screw joint pedicle screw treatment Hangman fracture of the way of escape |
-
1999
- 1999-12-15 CN CN 99256980 patent/CN2398981Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105326546A (en) * | 2014-08-11 | 2016-02-17 | 天津康立尔生物科技有限公司 | Pedicle screw system |
| CN105232137A (en) * | 2015-10-29 | 2016-01-13 | 山东航维骨科医疗器械股份有限公司 | Anti-loosing minimally-invasive U-shaped pedicle screw |
| CN105342684A (en) * | 2015-10-29 | 2016-02-24 | 山东航维骨科医疗器械股份有限公司 | U-shaped pedicle screw |
| CN105342684B (en) * | 2015-10-29 | 2017-03-29 | 山东航维骨科医疗器械股份有限公司 | A kind of U-shaped pedicle nail |
| CN105342677A (en) * | 2015-11-25 | 2016-02-24 | 山东航维骨科医疗器械股份有限公司 | Pedicle screw |
| CN107440776A (en) * | 2017-07-20 | 2017-12-08 | 南京市第医院 | A kind of inner fixing device of the new lag screw joint pedicle screw treatment Hangman fracture of the way of escape |
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