CN201564584U - Minimal invasion femur near-end internal fixation system - Google Patents
Minimal invasion femur near-end internal fixation system Download PDFInfo
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- CN201564584U CN201564584U CN2009202847375U CN200920284737U CN201564584U CN 201564584 U CN201564584 U CN 201564584U CN 2009202847375 U CN2009202847375 U CN 2009202847375U CN 200920284737 U CN200920284737 U CN 200920284737U CN 201564584 U CN201564584 U CN 201564584U
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Abstract
The utility model minimal invasion femur near-end internal fixation system relates to an internal fixation system used for femur near-end burst fracture, femur neck fracture, tuberosity fracture and femur cadreman fracture, which comprises an internal fixation steel plate, an internal fixation screw nail and a locking apparatus; wherein, the internal fixation steel plate adopts a gooseneck boom nail steel plate or a femur near-end steel plate, the gooseneck boom nail steel plate is composed of a head part and a rod part; the femur near-end steel plate is composed of the head part and the rod part; the locking apparatus comprises a rotating pin, a sliding pin, a spring and a locking tray; the internal fixation screw nail comprises a combined pulling force screw nail or a combined hollow nail, a hollow nail, a spongy bone screw nail, a corticalsubstance bone screw nail and a locking screw nail; the combined pulling force screw nail is composed of a connecting casing tube, a connecting sleeve and a pulling force screw nail; the combined hollow screw nail is composed of a hollow nail and a screw nail casing tube. The connection and the fixation adopt the internal fixation steel plate and the internal fixation screw nail by the locking apparatus, which can simplify the operation steps, shorten the surgery time and reduce the cut.
Description
Technical field
What this utility model proximal thighbone internal fixation system with minimal invasion related to is a kind of internal fixation system that is used near end of thighbone comminuted fracture, fracture of femoral neck, tuberosity fracture and femur backbone fracture.
Background technology
Traditional fractured near end of thighbone internal fixation method is the large-scale surgical operation of a kind of direct-view at present, the product structure complexity, and operation easier is big, long incision, wound surface is big, has the multiple possibility that causes severe complication, and the post-operative recovery time is long.
Summary of the invention
The purpose of this utility model is to provide a kind of proximal thighbone internal fixation system with minimal invasion at above-mentioned weak point, adopt internal fixation steel plate, internal fixation screw, pass through locking device, be connected and fixed, step can simplify the operation, shorten operating time, otch is little, reduces the misery of patient in the art, postoperative reduces bed rest time, reduces the probability of the generation of complication.
Proximal thighbone internal fixation system with minimal invasion takes following scheme to realize
The proximal thighbone internal fixation system with minimal invasion structure comprises internal fixation steel plate, internal fixation screw and locking device.Internal fixation steel plate can adopt gooseneck boom nail steel plate or near end of thighbone steel plate, described gooseneck boom nail steel plate is made up of head and bar portion, the head of gooseneck boom nail steel plate is provided with step, can be used for installing the femoral bone tuberosity steel plate, step is provided with slotted eye, can be used for installing hollow nail, rear side at step is provided with joint sleeve and screw grommet installing hole, 125 °～145 ° of installing hole and steel plate and angles, in installing hole, be provided with anti-rotation projection, the rear side of installing hole is provided with the stepped hole that locking device is installed, and the bottom surface of stepped hole is provided with counterbore, and the face of counterbore is provided with sliding tray, the bar portion of gooseneck boom nail steel plate is provided with the pressurization hole, the pressurization hole is made up of slotted eye and ball hole, and the pressurization hole is used for installing os integumentale screw and hollow nail, and the pressurization hole is provided with 2 at least.Bar portion at gooseneck boom nail steel plate can be provided with conical screw hole, is used for installing lock screw, and the bottom of gooseneck boom nail steel plate is provided with arc groove.
Described near end of thighbone steel plate has the physiology arc, is made up of head, bar portion; The head of near end of thighbone steel plate is provided with step, can be used for installing the femoral bone tuberosity steel plate, step is provided with slotted eye, be used for installing hollow nail, rear side at step is provided with joint sleeve and screw grommet installing hole, 125 °～145 ° of installing hole and steel plate and angles, in installing hole, be provided with anti-rotation projection, the rear side of installing hole is provided with the stepped hole that locking device is installed, the bottom surface of stepped hole is provided with counterbore, and the face of counterbore is provided with sliding tray, and the bar portion of near end of thighbone steel plate is provided with the pressurization hole, the pressurization hole is made up of slotted eye and ball hole, the pressurization hole is used for installing os integumentale screw and hollow nail, and the pressurization hole is provided with two at least, can be provided with conical screw hole in the bar portion of near end of thighbone steel plate, be used for installing lock screw, the bottom of gooseneck boom nail steel plate is provided with arc groove.
Described tuberosity steel plate front end is provided with 3 branches, all be provided with a screw mounting hole on each branch, be used for installing cancellous bone screw, tuberosity steel plate rear end is provided with a projection, high spot is provided with a screw mounting hole, reverse side at high spot is provided with groove, is used for cooperating with the step of gooseneck boom nail steel plate or near end of thighbone steel plate head, can follow closely steel plate or near end of thighbone steel plate to tuberosity steel plate and gooseneck boom by hollow nail and install and fix and be in the same place.
Described locking device comprises rotating dog, sliding pin, spring and locking plate, sliding pin is installed in the sliding pin installing hole of spring, spring is installed in the spring mounting hole of locking plate, by rotating dog sliding pin, spring, locking plate is installed in the locking device stepped hole of internal fixation steel plate.Described locking plate is a step axle, the step axle is provided with the installation through hole of a rotating dog, the groove that installs and fixes that installs and fixes groove or screw grommet that backward step and joint sleeve are installed matches, be used for joint sleeve or screw grommet, step surface is provided with spring mounting hole, be used for installing and fixing spring, a side of the big end of locking plate is provided with the inclined-plane, is used for dodging joint sleeve after the installation.Described spring is the metal cylinder spring, and metal cylinder is provided with two elastic grooves, is used for providing tensile force to locking plate.One end of described sliding pin is provided with sphere, is used for sliding in the bottom surface sliding tray of the locking device stepped hole of internal fixation steel plate.Described rotating dog is the step pin, the small end of step is installed in the rotating dog installing hole of locking plate, backward step is installed to be cooperated in the stopper slot of joint sleeve or the stopper slot of screw grommet, be used for limiting the installation site of joint sleeve and screw grommet, one side of the big end of rotating dog is provided with the inclined-plane, be used for dodging lag screw after the installation, the end face of big end is provided with flat recess, the back flat recess is installed is used to adorn slotting Rotating opener.
Described internal fixation screw comprises that combination type lag screw or combined hollow are followed closely, hollow nail, cancellous bone screw, os integumentale screw and lock screw.Described knockdown lag screw is made up of joint sleeve, adapter sleeve and lag screw, by adapter sleeve lag screw is fixed in the installing hole of joint sleeve.Described lag screw is a hollow, and an end of lag screw is provided with cancellous threads, and the other end is provided with inner hexagonal hole and limited step, and limited step is used for installing adapter sleeve.Described joint sleeve is a hollow, be provided with the lag screw installing hole, be used for installing lag screw, bottom in the screw mounting hole is provided with limited step, the outer surface on joint sleeve top is provided with anti-rotation arc groove, cooperate with projection anti-rotation in the sleeve pipe installing hole on the internal fixation steel plate, prevent the joint sleeve rotation, joint sleeve top is provided with and installs and fixes groove and stopper slot, cooperate with locking device, upper end at joint sleeve is provided with the inclined-plane, and the upper surface flush of back and internal fixation steel plate is installed.Described stop collar is the metal cylinder of hollow.
Described combined hollow screw is by hollow nail, screw grommet is formed, hollow nail is installed in the screw hole of screw grommet, described screw grommet is the step axle of a hollow, the big end of step axle is that the cross section is a triangle, oval, square or circular hollow sleeve, the end of big end is provided with a conical surface, be convenient to insert in the neck of femur, the outer surface of the big end of screw grommet is provided with three screw mounting holes, be used for installing hollow nail, screw grommet is provided with knitting material filler opening, the outer surface of the big end of screw grommet is provided with some apertures, the outer surface of the big end of screw grommet is provided with six exterior fixation bracket installing holes, be distributed in the both sides of outer surface, three holes of one side, screw grommet small end outer surface be provided with anti-rotation arc groove, cooperate with projection anti-rotation in the sleeve pipe installing hole on the internal fixation steel plate, screw grommet small end outer surface is provided with and installs and fixes groove and stopper slot, cooperate with locking device, the end of screw grommet small end is provided with the inclined-plane, and the upper surface flush of back and internal fixation steel plate is installed.
Described hollow nail is a hollow, and an end of hollow nail is provided with cancellous threads, and the other end is provided with inner hexagonal hole, and head of screw is spherical.Described os integumentale screw is solid, and an end of screw is provided with the cortical bone screw thread, and the other end is provided with inner hexagonal hole, and head of screw is spherical.
Described cancellous bone screw is solid, and an end of screw is provided with cancellous threads, and the other end is provided with inner hexagonal hole, and head of screw is spherical.
Described lock screw is solid, and an end of screw is provided with the cortical bone screw thread, and the other end is provided with quincunx hole, and head of screw is taper, and the conical surface is provided with screw thread.
Reasonable in design, the compact conformation of proximal thighbone internal fixation system with minimal invasion adopts internal fixation steel plate, internal fixation screw, is connected and fixed by locking device, and fixed form is solid and reliable.The step that can simplify the operation shortens operating time, and otch is little, goes out insufficiency of blood, reduces the misery of patient in the art, and postoperative reduces bed rest time, but makes the early stage just out-of-bed activity of patient, and knitting rate height reduces the probability of the generation of complication.Proximal thighbone internal fixation system with minimal invasion can be used near end of thighbone comminuted fracture, fracture of femoral neck, tuberosity fracture and femur backbone fracture and make internal fixation system.
Description of drawings
The utility model is described in further detail below with reference to accompanying drawing:
Fig. 1 is proximal thighbone internal fixation system with minimal invasion embodiment 1.
Fig. 2 is proximal thighbone internal fixation system with minimal invasion embodiment 2.
Fig. 3 is the lag screw sketch map 1 of proximal thighbone internal fixation system with minimal invasion.
Fig. 4 is the lag screw sketch map 2 of proximal thighbone internal fixation system with minimal invasion.
Fig. 5 is the joint sleeve sketch map 1 of proximal thighbone internal fixation system with minimal invasion.
Fig. 6 is the joint sleeve sketch map 2 of proximal thighbone internal fixation system with minimal invasion.
Fig. 7 is the adapter sleeve sketch map of proximal thighbone internal fixation system with minimal invasion.
Fig. 8 is the locking plate sketch map of proximal thighbone internal fixation system with minimal invasion.
Fig. 9 is the spring sketch map of proximal thighbone internal fixation system with minimal invasion.
Figure 10 is the sliding pin sketch map of proximal thighbone internal fixation system with minimal invasion.
Figure 11 is the gooseneck boom nail steel plate sketch map of proximal thighbone internal fixation system with minimal invasion.
Figure 12 is the gooseneck boom nail steel plate upward view of proximal thighbone internal fixation system with minimal invasion.
Figure 13 is the rotating dog sketch map of proximal thighbone internal fixation system with minimal invasion.
Figure 14 is the tuberosity steel plate sketch map of proximal thighbone internal fixation system with minimal invasion.
Figure 15 is the tuberosity steel plate upward view of proximal thighbone internal fixation system with minimal invasion.
Figure 16 is the cancellous bone screw sketch map of proximal thighbone internal fixation system with minimal invasion.
Figure 17 is the os integumentale screw sketch map of proximal thighbone internal fixation system with minimal invasion.
Figure 18 is the lock screw sketch map of proximal thighbone internal fixation system with minimal invasion.
Figure 19 is the hollow nail sketch map 1 of proximal thighbone internal fixation system with minimal invasion.
Figure 20 is the hollow nail sketch map 2 of proximal thighbone internal fixation system with minimal invasion.
Figure 21 is the screw grommet sketch map 1 of proximal thighbone internal fixation system with minimal invasion.
Figure 22 is the screw grommet sketch map 2 of proximal thighbone internal fixation system with minimal invasion.
Figure 23 is the near end of thighbone steel plate sketch map of proximal thighbone internal fixation system with minimal invasion.
Figure 24 is the near end of thighbone steel plate upward view of proximal thighbone internal fixation system with minimal invasion.
The specific embodiment
With reference to accompanying drawing 1～24, proximal thighbone internal fixation system with minimal invasion comprises internal fixation steel plate, internal fixation screw and locking device 160.Joint sleeve 2 with knockdown lag screw 150, insert in the sleeve pipe installing hole of internal fixation steel plate, by operation tool, rotate the rotating dog 8 in the locking device 160 that is installed on the internal fixation steel plate, by joint sleeve 2 being locked with the step of its locking plate that together rotates 4.Internal fixation steel plate can adopt gooseneck boom nail steel plate 7 or near end of thighbone steel plate 170, described gooseneck boom nail steel plate 7 is made up of head and bar portion, the head of gooseneck boom nail steel plate 7 is provided with step 72, can be used for installing femoral bone tuberosity steel plate 9, step is provided with slotted eye 71, can be used for installing hollow nail 130, rear side at step is provided with joint sleeve 2 and screw grommet 140 installing holes 74,125 °～145 ° of installing hole 74 and steel plate 7 and angles, in installing hole 74, be provided with anti-rotation projection 73, the rear side of installing hole 74 is provided with the stepped hole 75 that locking device 160 is installed, the bottom surface of stepped hole is provided with counterbore 81, the face of counterbore is provided with sliding tray 80, the bar portion of gooseneck boom nail steel plate 7 is provided with the pressurization hole, pressurization hole 77 is made up of slotted eye and ball hole 76, and the pressurization hole is used for installing os integumentale screw 110 and hollow nail 130, and the pressurization hole is provided with 2 at least.Bar portion at gooseneck boom nail steel plate 7 can be provided with conical screw hole 78, is used for installing lock screw 120, and the bottom of gooseneck boom nail steel plate 7 is provided with arc groove 79.
Described near end of thighbone steel plate 170 has physiology arc 182, is made up of head, bar portion; The head of near end of thighbone steel plate is provided with step 171, can be used for installing femoral bone tuberosity steel plate 9, step is provided with slotted eye 172, be used for installing hollow nail 130, rear side at step is provided with joint sleeve 2 and screw grommet 140 installing holes 174,125 °～145 ° of installing hole 174 and steel plate 170 and angles, in installing hole 174, be provided with anti-rotation projection 173, the rear side of installing hole 174 is provided with the stepped hole 175 that locking device 160 is installed, the bottom surface of stepped hole 175 is provided with counterbore 180, the face of counterbore is provided with sliding tray 179, the bar portion of near end of thighbone steel plate 170 is provided with the pressurization hole, the pressurization hole is made up of slotted eye 177 and ball hole 178, the pressurization hole is used for installing os integumentale screw 110 and hollow nail 130, and the pressurization hole is provided with two at least, can be provided with conical screw hole 176 in the bar portion of near end of thighbone steel plate, be used for installing lock screw 120, the bottom of gooseneck boom nail steel plate 7 is provided with arc groove 181.
Described tuberosity steel plate 9 front ends are provided with 3 branches 93, all be provided with a screw mounting hole 94 on each branch 93, be used for installing cancellous bone screw 100, tuberosity steel plate 9 rear ends are provided with a projection 92, high spot is provided with a screw mounting hole 91, reverse side at high spot is provided with groove 95, is used for cooperating with the step of gooseneck boom nail steel plate 7 or near end of thighbone steel plate head, can follow closely steel plate 7 or near end of thighbone steel plate to tuberosity steel plate 9 and gooseneck boom by hollow nail 130 and install and fix and be in the same place.
Described locking device 160 comprises rotating dog 8, sliding pin 6, spring 5, locking plate 4, sliding pin 6 is installed in the sliding pin installing hole 52 of spring 5, spring 5 is installed in the spring mounting hole 42 of locking plate 4, by rotating dog 8 sliding pin 6, spring 5, locking plate 4 is installed in locking device 160 stepped holes of internal fixation steel plate.Described locking plate 4 is a step axle, the step axle is provided with the installation through hole 44 of a rotating dog, the groove 142 that installs and fixes that installs and fixes groove 22 or screw grommet 140 that backward step 43 and joint sleeve 2 are installed matches, be used for joint sleeve 2 or screw grommet 140, step surface is provided with spring mounting hole 42, is used for installing and fixing spring 5, and a side of locking plate 4 big ends is provided with inclined-plane 41, be used for dodging joint sleeve 2 after the installation.Described spring 5 is the metal cylinder spring, and metal cylinder is provided with two elastic grooves 51, is used for providing tensile force to locking plate 4.One end of described sliding pin 6 is provided with sphere 61, is used for sliding in the bottom surface sliding tray 76 of the locking device stepped hole of internal fixation steel plate.Described rotating dog 8 is the step pin, the small end 81 of step is installed in the rotating dog installing hole 44 of locking plate 4, backward step is installed to be cooperated in the stopper slot of joint sleeve 2 or the stopper slot 143 of screw grommet 140, be used for limiting the installation site of joint sleeve and screw grommet, one side of rotating dog 8 big ends is provided with inclined-plane 83, be used for dodging lag screw 1 after the installation, the end face of big end is provided with flat recess 82, the back flat recess is installed is used to adorn slotting Rotating opener.
Described internal fixation screw comprises combination type lag screw 150 or combined hollow nail 151, hollow nail 130, cancellous bone screw 100, os integumentale screw 110 and lock screw 120.Described knockdown lag screw 150 is made up of joint sleeve 2, adapter sleeve 3 and lag screw 1, by adapter sleeve 3 lag screw 1 is fixed in the installing hole of joint sleeve 2.Described lag screw 1 is a hollow 15, and an end of lag screw 1 is provided with cancellous threads 12, and the other end is provided with inner hexagonal hole 14 and limited step 13, and limited step 13 is used for installing adapter sleeve 3.Described joint sleeve 2 is a hollow 26, be provided with lag screw 1 installing hole, be used for installing lag screw 1, bottom in the screw mounting hole is provided with limited step 24, the outer surface on joint sleeve 2 tops is provided with anti-rotation arc groove 21, cooperate with projection 75 anti-rotation in the sleeve pipe installing hole on the internal fixation steel plate 74, prevent joint sleeve 2 rotations, joint sleeve 2 tops are provided with and install and fix groove 22 and stopper slot 23, cooperate with locking device 160, be provided with inclined-plane 25 in the upper end of joint sleeve 2, the upper surface flush of back and internal fixation steel plate is installed.Described stop collar 3 is the metal cylinder of hollow 31.
Described combined hollow screw 151 is by hollow nail 130, screw grommet 140 is formed, hollow nail 130 is installed in the screw hole of screw grommet 140, described screw grommet 140 is the step axle of a hollow, the big end of step axle is that the cross section is a triangle, oval, square or circular hollow sleeve, the end of big end is provided with a conical surface 146, be convenient to insert in the neck of femur, the outer surface of screw grommet 140 big ends is provided with three screw mounting holes 144, be used for installing hollow nail 130, screw grommet 140 is provided with knitting material filler opening 148, the outer surface of screw grommet 140 big ends is provided with some apertures 147, the outer surface of screw grommet 140 big ends is provided with six exterior fixation bracket installing holes 145, be distributed in the both sides of outer surface, three holes of one side, screw grommet 140 small end outer surfaces be provided with anti-rotation arc groove 141, cooperate with projection 75 anti-rotation in the sleeve pipe installing hole on the internal fixation steel plate 74, screw grommet 140 small end outer surfaces are provided with and install and fix groove 142 and stopper slot 143, cooperate with locking device 160, the end of screw grommet 140 small ends is provided with inclined-plane 149, and the upper surface flush of back and internal fixation steel plate is installed.
Described hollow nail 130 is a hollow 134, and an end of hollow nail 130 is provided with cancellous threads 131, and the other end is provided with inner hexagonal hole 133, and head of screw is spherical 132.Described os integumentale screw 110 is solid, and an end of screw is provided with cortical bone screw thread 111, and the other end is provided with inner hexagonal hole 113, and head of screw is spherical 112.
Described cancellous bone screw 100 is solid, and an end of screw is provided with cancellous threads 103, and the other end is provided with inner hexagonal hole 101, and head of screw is spherical 102.
Described lock screw 120 is solid, and an end of screw is provided with cortical bone screw thread 121, and the other end is provided with quincunx hole 123, and head of screw is 122 of taper, and the conical surface is provided with screw thread 122.
Operation principle:
Do a suitable skin otch at patient's near end of thighbone, determine the installation site of internal fixation screw, measure neck of femur length, select the screw of appropriate length,, near end of thighbone boring and tapping lag screw 1 is screwed in along the screw duct that near end of thighbone has been finished by operation tool.Internal fixation steel plate is inserted skin incision, pass through operation tool, the joint sleeve 2 of internal fixation steel plate and lag screw 150 is linked together, tool using, rotate the rotating dog 8 in the locking device 160 that is installed on the internal fixation steel plate, by joint sleeve 2 being locked with the step of its locking plate that together rotates 4.Pass through operation tool, bar portion at internal fixation steel plate, boring is also measured the degree of depth of key portion, select the appropriate length screw for use, with operation tool screw is screwed in the completed duct, the head of screw of hollow nail 130 and bone screw is installed in the ball hole of internal fixation steel plate, bar portion is screwed into two pieces of screws at least, operation needs according to the patient are screwed into dissimilar screws.According to patient's operation needs,, can be screwed into one piece of hollow nail 130 or tuberosity steel plate 9 is installed at the head step place of internal fixation steel plate.
Claims (10)
1. a proximal thighbone internal fixation system with minimal invasion is characterized in that comprising internal fixation steel plate, internal fixation screw and locking device; Internal fixation steel plate adopts gooseneck boom nail steel plate or near end of thighbone steel plate, described gooseneck boom nail steel plate is made up of head and bar portion, the head of gooseneck boom nail steel plate is provided with step, be used for installing the femoral bone tuberosity steel plate, step is provided with slotted eye, be used for installing hollow nail, rear side at step is provided with joint sleeve and screw grommet installing hole, 125 °～145 ° of installing hole and steel plate and angles, in installing hole, be provided with anti-rotation projection, the rear side of installing hole is provided with the stepped hole that locking device is installed, and the bottom surface of stepped hole is provided with counterbore, and the face of counterbore is provided with sliding tray, the bar portion of gooseneck boom nail steel plate is provided with the pressurization hole, the pressurization hole is made up of slotted eye and ball hole, and the pressurization hole is used for installing os integumentale screw and hollow nail, and the pressurization hole is provided with 2 at least; Bar portion at gooseneck boom nail steel plate is provided with conical screw hole, is used for installing lock screw, and the bottom of gooseneck boom nail steel plate is provided with arc groove;
Described near end of thighbone steel plate is made up of head, bar portion; The head of near end of thighbone steel plate is provided with step, be used for installing the femoral bone tuberosity steel plate, step is provided with slotted eye, be used for installing hollow nail, rear side at step is provided with joint sleeve and screw grommet installing hole, 125 °～145 ° of installing hole and steel plate and angles, in installing hole, be provided with anti-rotation projection, the rear side of installing hole is provided with the stepped hole that locking device is installed, the bottom surface of stepped hole is provided with counterbore, and the face of counterbore is provided with sliding tray, and the bar portion of near end of thighbone steel plate is provided with the pressurization hole, the pressurization hole is made up of slotted eye and ball hole, the pressurization hole is used for installing os integumentale screw and hollow nail, and the pressurization hole is provided with two at least, can be provided with conical screw hole in the bar portion of near end of thighbone steel plate, be used for installing lock screw, the bottom of gooseneck boom nail steel plate is provided with arc groove;
Described locking device comprises rotating dog, sliding pin, spring and locking plate; Sliding pin is installed in the sliding pin installing hole of spring, spring is installed in the spring mounting hole of locking plate, by rotating dog sliding pin, spring, locking plate is installed in the locking device stepped hole of internal fixation steel plate, described locking plate is a step axle, the step axle is provided with the installation through hole of a rotating dog, the groove that installs and fixes that installs and fixes groove or screw grommet that backward step and joint sleeve are installed matches, be used for joint sleeve or screw grommet, step surface is provided with spring mounting hole, be used for installing and fixing spring, one side of the big end of locking plate is provided with the inclined-plane, be used for dodging joint sleeve after the installation, described rotating dog is the step pin, and the small end of step is installed in the rotating dog installing hole of locking plate, backward step is installed is cooperated in the stopper slot of joint sleeve or the stopper slot of screw grommet, be used for limiting the installation site of joint sleeve and screw grommet, one side of the big end of rotating dog is provided with the inclined-plane, is used for dodging lag screw after the installation, and the end face of big end is provided with flat recess;
Described internal fixation screw comprises that combination type lag screw or combined hollow are followed closely, hollow nail, cancellous bone screw, os integumentale screw and lock screw; Described knockdown lag screw is made up of joint sleeve, adapter sleeve and lag screw, lag screw is fixed in the installing hole of joint sleeve by adapter sleeve; Described lag screw is a hollow, and an end of lag screw is provided with cancellous threads, and the other end is provided with inner hexagonal hole and limited step, and limited step is used for installing adapter sleeve; Described joint sleeve is a hollow, be provided with the lag screw installing hole, be used for installing lag screw, bottom in the screw mounting hole is provided with limited step, the outer surface on joint sleeve top is provided with anti-rotation arc groove, cooperate with projection anti-rotation in the sleeve pipe installing hole on the internal fixation steel plate, prevent the joint sleeve rotation, joint sleeve top is provided with and installs and fixes groove and stopper slot, cooperate with locking device, upper end at joint sleeve is provided with the inclined-plane, and the upper surface flush of back and internal fixation steel plate is installed;
Described combined hollow screw is by hollow nail, screw grommet is formed, hollow nail is installed in the screw hole of screw grommet, described screw grommet is the step axle of a hollow, the big end of step axle is that the cross section is a triangle, oval, square or circular hollow sleeve, the end of big end is provided with a conical surface, be convenient to insert in the neck of femur, the outer surface of the big end of screw grommet is provided with three screw mounting holes, be used for installing hollow nail, screw grommet is provided with knitting material filler opening, the outer surface of the big end of screw grommet is provided with some apertures, the outer surface of the big end of screw grommet is provided with six exterior fixation bracket installing holes, be distributed in the both sides of outer surface, three holes of one side, screw grommet small end outer surface be provided with anti-rotation arc groove, cooperate with projection anti-rotation in the sleeve pipe installing hole on the internal fixation steel plate, screw grommet small end outer surface is provided with and installs and fixes groove and stopper slot, cooperate with locking device, the end of screw grommet small end is provided with the inclined-plane, and the upper surface flush of back and internal fixation steel plate is installed.
2. proximal thighbone internal fixation system with minimal invasion according to claim 1, it is characterized in that described tuberosity steel plate front end is provided with 3 branches, all be provided with a screw mounting hole on each branch, be used for installing cancellous bone screw, tuberosity steel plate rear end is provided with a projection, high spot is provided with a screw mounting hole, reverse side at high spot is provided with groove, be used for cooperating, can follow closely steel plate or near end of thighbone steel plate to tuberosity steel plate and gooseneck boom by hollow nail and install and fix and be in the same place with the step of gooseneck boom nail steel plate or near end of thighbone steel plate head.
3. proximal thighbone internal fixation system with minimal invasion according to claim 1 is characterized in that described hollow nail is a hollow, and an end of hollow nail is provided with cancellous threads, and the other end is provided with inner hexagonal hole, and head of screw is spherical.
4. proximal thighbone internal fixation system with minimal invasion according to claim 1 is characterized in that described os integumentale screw is solid, and an end of screw is provided with the cortical bone screw thread, and the other end is provided with inner hexagonal hole, and head of screw is spherical.
5. proximal thighbone internal fixation system with minimal invasion according to claim 1 is characterized in that described cancellous bone screw is solid, and an end of screw is provided with cancellous threads, and the other end is provided with inner hexagonal hole, and head of screw is spherical.
6. proximal thighbone internal fixation system with minimal invasion according to claim 1 is characterized in that described lock screw is solid, and an end of screw is provided with the cortical bone screw thread, and the other end is provided with quincunx hole, and head of screw is taper, and the conical surface is provided with screw thread.
7. proximal thighbone internal fixation system with minimal invasion according to claim 1, the spring that it is characterized in that described locking device is the metal cylinder spring, metal cylinder is provided with two elastic grooves, is used for providing tensile force to locking plate.
8. proximal thighbone internal fixation system with minimal invasion according to claim 1 is characterized in that an end of the sliding pin of described locking device is provided with sphere, is used for sliding in the bottom surface sliding tray of the locking device stepped hole of internal fixation steel plate.
9. proximal thighbone internal fixation system with minimal invasion according to claim 1, the adapter sleeve that it is characterized in that described knockdown lag screw is the metal cylinder of hollow.
10. proximal thighbone internal fixation system with minimal invasion according to claim 1 is characterized in that described near end of thighbone steel plate has the physiology arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202847375U CN201564584U (en) | 2009-12-07 | 2009-12-07 | Minimal invasion femur near-end internal fixation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202847375U CN201564584U (en) | 2009-12-07 | 2009-12-07 | Minimal invasion femur near-end internal fixation system |
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| CN201564584U true CN201564584U (en) | 2010-09-01 |
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| CN2009202847375U Expired - Lifetime CN201564584U (en) | 2009-12-07 | 2009-12-07 | Minimal invasion femur near-end internal fixation system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240223A (en) * | 2011-03-21 | 2011-11-16 | 练克俭 | Juvenile type osteoepiphysis-striding slidingly extending steel plate |
| CN108852493A (en) * | 2018-07-13 | 2018-11-23 | 王刚 | A kind of novel thighbone neck locked pressurized bone plate |
| WO2020030957A1 (en) * | 2018-08-10 | 2020-02-13 | Barath Gabor | Implant structure mainly for cortical implanting |
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2009
- 2009-12-07 CN CN2009202847375U patent/CN201564584U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240223A (en) * | 2011-03-21 | 2011-11-16 | 练克俭 | Juvenile type osteoepiphysis-striding slidingly extending steel plate |
| CN108852493A (en) * | 2018-07-13 | 2018-11-23 | 王刚 | A kind of novel thighbone neck locked pressurized bone plate |
| CN108852493B (en) * | 2018-07-13 | 2023-07-14 | 湖州学院 | Novel femur neck locking and pressurizing bone fracture plate |
| WO2020030957A1 (en) * | 2018-08-10 | 2020-02-13 | Barath Gabor | Implant structure mainly for cortical implanting |
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Granted publication date: 20100901 Effective date of abandoning: 20091207 |