CN113288381B - Combined external fixing frame for fracture and using method thereof - Google Patents
Combined external fixing frame for fracture and using method thereof Download PDFInfo
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- CN113288381B CN113288381B CN202110599717.2A CN202110599717A CN113288381B CN 113288381 B CN113288381 B CN 113288381B CN 202110599717 A CN202110599717 A CN 202110599717A CN 113288381 B CN113288381 B CN 113288381B
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements for external osteosynthesis, e.g. distractors, contractors
- A61B17/66—Alignment, compression or distraction mechanisms
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
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Abstract
The invention relates to a combined external fixation frame for fracture and a use method thereof, wherein the fixation frame comprises: the plurality of fixing nails are respectively used for fixing on bones at two sides of the fracture; the two fixed connecting rods are respectively and fixedly connected with the fixed nails at the two sides of the fracture part through the fixed connecting pieces; the deformable connecting piece is in a hollow tubular shape, and two ends of the deformable connecting piece are respectively connected with the near ends of the two fixed connecting rods, so that the two fixed connecting rods are connected to form an integral structure; the deformable connecting piece is provided with a grouting port, and after the position of the fixed connecting rod is adjusted, normal-temperature fast-setting hardened slurry is injected into the deformable connecting piece through the grouting port to prevent the deformable connecting piece from deforming.
Description
Technical Field
The invention relates to the technical field of fracture positioning, in particular to a combined external fracture fixation frame and a using method thereof.
Background
The fracture external fixation bracket is an appliance for fixing fracture and is positioned outside a limb body and mainly formed by connecting an external fixation bracket rod through an external fixation screw. The external fixing bracket is mainly used for treating various open fracture injuries of limbs with serious damage, maintains the stability and position of the fracture as much as possible and reduces the risk of fracture dislocation.
The external fixing bracket has certain disadvantages, such as nail path infection looseness, fracture dislocation and the like. Particularly, the external fixing frame with the single-rod multi-nail structure has poor mounting and adjusting operation accuracy, low adjustable range and the like.
In order to overcome the problems of poor mounting and fixing precision and poor adjustable operability, the prior art arranges a coupler with an adjustable angle in the middle of a transverse connecting rod, such as a universal joint type external fracture fixing device disclosed in the Chinese invention patent application with the patent application number of 201110385693.7, wherein the universal joint or the coupler has the defects of complex structure, poor stability and the like; although the circular ring-shaped orthopedic frame has better adjustability and accuracy, a plurality of steel nails are needed to be fixed, the risk is high, the injury to bones and human bodies is large, and the structure is more complex.
Disclosure of Invention
The invention aims to provide a combined external fixation frame for fracture and a use method thereof, which are flexible to adjust and convenient to operate.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the utility model provides a modular external fixation frame for fracture which key technology lies in, includes:
the plurality of fixing nails are respectively used for fixing on bones at two sides of the fracture;
the number of the fixed connecting pieces corresponds to that of the fixed nails, and the fixed connecting pieces are used for being fixed on the fixed nails and providing a structure connected with the fixed connecting rods;
the two fixed connecting rods are respectively and fixedly connected with the fixed nails on the two sides of the fracture part through the fixed connecting pieces;
the deformable connecting piece is in a hollow tubular shape, and two ends of the deformable connecting piece are respectively connected with the near ends of the two fixed connecting rods, so that the two fixed connecting rods are connected to form an integral structure;
be provided with the slip casting mouth on the deformable connecting piece, after adjusting fixed connection pole position, through the slip casting mouth to but pour into the thick liquids of normal atmospheric temperature rapid solidification sclerosis into in the deformable connecting piece, realize the solidification of deformable connecting piece, make it can not warp.
As a further improvement of the present invention, a first length adjustment mechanism is disposed on the fixed connection rod, and the length of the fixed connection rod can be adjusted by the first length adjustment mechanism.
As a further improvement of the invention, the fixed connecting piece comprises a fixed connecting piece main body, one side of the fixed connecting piece main body is provided with a first positioning hole matched with the fixed nail, the other side of the fixed connecting piece main body is provided with a second positioning hole matched with the fixed connecting rod, the axis of the first positioning hole is vertical to the axis of the second positioning hole, the cross section of the first positioning hole is rectangular, so that the position of the first positioning hole and the fixed nail can be adjusted forwards and backwards, the outer side of the first positioning hole is provided with a vertical opening, and two sides of the opening are connected through locking screws.
As a further improvement of the invention, the cross section of the second positioning hole is a long round hole extending in the vertical direction, two through holes with internal threads are respectively arranged at the top and the bottom of the second positioning hole, an adjusting pin is arranged in each through hole, and the adjusting pin is in threaded fit with the through holes.
As a further improvement of the invention, the deformable connecting piece main body is a stainless steel corrugated pipe and comprises a corrugated pipe body and a grouting opening arranged on the corrugated pipe body, and connecting sleeves fixedly connected with the end parts of the fixed connecting rods are arranged at the left end and the right end of the corrugated pipe body.
As a further improvement of the invention, a plurality of tie bars are arranged in the corrugated pipe body.
As a further improvement of the invention, the left side and the right side of the deformable connecting piece are provided with air outlets.
As a further improvement of the invention, the device also comprises a plurality of annular fixed traction frames, each fixed traction frame corresponds to one fixing nail and is fixedly connected with the fixing nail, the fixed traction frames are provided with rubber pads which are used for being tightly contacted with the skin of a human body and increasing the friction resistance, at least two traction connecting rods penetrate through the plurality of fixed traction frames, and the traction connecting rods are provided with second length adjusting mechanisms capable of adjusting the lengths of the traction connecting rods.
As a further improvement of the invention, the fixed traction frame comprises two arc-shaped fixed plates which are symmetrically arranged and a connecting plate which is connected with the two arc-shaped fixed plates, the connecting plate has certain elasticity, the rubber pad is arranged on the connecting plate, and the upper ends of the arc-shaped fixed plates are respectively connected with the fixed nails through fixed plate connecting blocks.
The use method of the combined external fracture fixation frame comprises the following steps:
step 1: at least two fixing nails are respectively fixed on bones at two sides of the fracture part, and the four fixing nails are kept parallel to each other as much as possible and are positioned on the same plane;
step 2: the two fixed connecting rods are fixedly connected by a deformable connecting piece;
and step 3: fixing the corresponding fixed connecting rods on the fixed nails at the two sides through the fixed connecting pieces respectively, and adjusting the positions of the fixed connecting rods through the fixed connecting pieces;
and 4, step 4: the annular fixed traction frame with an opening is arranged at the position corresponding to the fixing nail and sleeved on the limb, the opening end of the annular fixed traction frame is fixedly connected with the fixing nail, the fixed traction frame is adjusted, and the rubber pad is arranged on the fixed traction frame and is in close contact with the skin of the limb to increase the friction force;
and 5: at least two traction connecting rods with adjustable lengths are arranged among the fixed traction frames;
step 6: simultaneously adjusting the length of the fixed connecting rod and the length of the traction connecting rod, and correcting the position of the bone;
and 7: injecting normal-temperature fast-setting and hardening slurry into the deformable connecting piece to ensure that the deformable connecting piece cannot be deformed during curing;
and 8: and (5) removing the fixed traction frame and the traction connecting rod, and keeping the fixed nail and the fixed connecting rod.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the combined external fixation frame for fracture provided by the invention can adjust the position and angle through the fixed connecting pieces with adjustable multiple dimensions, so that the problems of non-parallelism and angle difference among the fixed nails and space caused by the appearance of limbs are solved to a certain extent, and meanwhile, the deformable connecting pieces are arranged between the two fixed connecting rods, so that the deformable connecting pieces can be freely deformed in different angles and length directions, so that the operation of fixing and adjusting the fixed connecting rods is more flexible and convenient, after the fixed connecting rods are installed and adjusted, slurry solidified and hardened by rapid solidification at normal temperature is injected into the deformable connecting pieces to form rigid connecting pieces, the fixation of the position is realized, the integral fixation is more accurate, and the operation is flexible and convenient.
The combined external fracture fixation frame provided by the invention is used for performing external fracture fixation operation, and the fixation method is more flexible and convenient, high in accuracy and flexible in adjustable range.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of the installation process of the present invention.
Fig. 2 is a schematic structural view of the deformable connecting member.
Fig. 3 is a schematic view of the installation structure of the lacing wire in the deformable connecting piece.
Fig. 4 is a schematic top view of the fixed connection member.
Fig. 5 is a side view of the fixing link.
Fig. 6 is a perspective view of the fixing link.
Fig. 7 is a schematic view of a fixed traction frame structure.
Fig. 8 is a schematic structural view of the first length adjustment mechanism.
FIG. 9 is a schematic view of another embodiment of a fixed connection.
FIG. 10 is a cross-sectional structural view of another embodiment of a fixed connection.
Fig. 11 is an enlarged view of a part of the structure of fig. 10.
In the drawings:
100 limbs, 101 bones, 102 fractures;
1, fixing a nail;
2, fixing a connecting piece, 2-1, fixing a connecting piece main body, 2-2 first positioning holes, 2-3 second positioning holes, 2-4 openings, 2-5 locking screws, 2-6 deformation grooves and 2-7 adjusting pins;
3, a fixed connecting rod, 3-1, a first length adjusting mechanism, 3-2, a first connecting rod, 3-3, a second connecting rod, 3-4 adjusting sleeves, 3-5 connecting holes, 3-6 connecting pins, 3-7 limiting grooves, 3-8 limiting bulges and 3-9 sealing rings;
4 deformable connecting pieces, 4-1 corrugated pipe bodies, 4-2 transition parts, 4-3 grouting ports, 4-4 connecting sleeves, 4-5 exhaust ports, 4-6 tie bars, 4-7 positioning rings and 4-8 positioning tie bars;
5, fixing plate connecting blocks, 5-1 connecting block bodies, 5-2 positioning rods and 5-3 nuts;
6, an arc-shaped fixing plate, 6-1 connecting holes and 6-2 connecting lug plates;
7, a traction connecting rod and 7-1 a second length adjusting mechanism;
8 connecting plates, 9 rubber pads, 10 clamps and 11 jackscrews.
Detailed Description
For purposes of clarity and a complete description of the present invention, and the like, in conjunction with the detailed description, it is to be understood that the terms "central," "vertical," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing and simplifying the present invention, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
Example 1
As shown in fig. 1, a combined external fixation frame for fracture comprises:
four fixing nails 1 respectively used for fixing on bones 101 at both sides of a fracture 102;
the number of the four fixed connecting pieces 2 corresponds to that of the fixed nails 1, the four fixed connecting pieces are used for being fixed on the fixed nails 1 and providing a structure connected with the fixed connecting rods 3, and the fixed connecting pieces 2 are fixed connecting pieces with adjustable multiple dimensions and can move up and down, move back and forth, rotate horizontally, rotate vertically or swing;
the two fixed connecting rods 3 are respectively fixedly connected with the fixed nails 1 at two sides of the fracture part 102 through the fixed connecting pieces 2; two fixed nails 1 positioned on the left side fix a fixed connecting rod 3 through the fixed connecting pieces 2 on the fixed nails, and two fixed nails 1 positioned on the right side fix a fixed connecting rod 3 through the fixed connecting pieces 2 on the fixed nails;
the deformable connecting piece 4 is in a hollow tubular shape, and two ends of the deformable connecting piece are respectively connected with the near ends of the two fixed connecting rods 3, so that the two fixed connecting rods 3 are connected to form an integral structure;
and the deformable connecting piece 4 is provided with a grouting opening 4-3, after the position of the fixed connecting rod 3 is adjusted, normal-temperature fast-setting hardened slurry is injected into the deformable connecting piece 4 through the grouting opening 4-3, so that the deformable connecting piece 4 is cured and cannot be deformed.
As shown in fig. 1, a first length adjustment mechanism 3-1 is disposed on the fixed connecting rod 3, and the length of the fixed connecting rod 3 can be adjusted by the first length adjustment mechanism 3-1.
As shown in fig. 8, the first length adjustment mechanism 3-1 has the following specific structure: the fixed connecting rod 3 is of a two-section structure and comprises a first connecting rod 3-2 and a second connecting rod 3-3, a connecting hole 3-5 is formed in the end portion of the first connecting rod 3-2, a connecting pin 3-6 is arranged at the end portion of the second connecting rod 3-3, the connecting pin 3-6 is inserted into the connecting hole 3-5, the connecting pin and the connecting hole 3-5 are adaptive in shape and length, the cross sections of the connecting hole and the connecting pin are in a regular polygon shape, such as a square shape, a regular hexagon shape and the like, relative rotation of the first connecting rod 3-2 and the second connecting rod 3-3 is avoided, an adjusting sleeve 3-4 is arranged outside the connecting portion of the first connecting rod 3-2 and the second connecting rod 3-3, the adjusting sleeve 3-4 is matched with the first connecting rod 3-2 through threads, the other end of the adjusting sleeve 3-4 is embedded in a limiting groove 3-7 on the second connecting rod 3-3 through an annular limiting bulge 3-8 on the adjusting sleeve, and the first connecting rod 3-2 and the second connecting rod 3-3 move relatively by rotating the adjusting sleeve 3-4, so that the length of the fixed connecting rod 3 is adjusted. Because the dislocation displacement of the fracture part is small, precise threads can be arranged between the adjusting sleeve 3-4 and the first connecting rod 3-2 to realize precise fine adjustment, and the adjusting structure is simple, convenient to operate, small in overall size and convenient to install the fixed connecting rod 3.
As shown in fig. 4, 5 and 6, a specific embodiment of a multi-dimensional adjustable fixed connector is shown, the fixed connector 2 includes a fixed connector body 2-1, one side of the fixed connector body 2-1 is provided with a first positioning hole 2-2 adapted to the fixing nail 1, the other side of the fixed connector body is provided with a second positioning hole 2-3 adapted to the fixing connecting rod 3, and an axis of the first positioning hole 2-2 is perpendicular to an axis of the second positioning hole 2-3. The section of the first positioning hole 2-2 is rectangular, the left side wall and the right side wall of the first positioning hole are provided with tooth-shaped convex ridges for clamping the fixing nail 1, the width of the first positioning hole is matched with the diameter of the fixing nail 1, and the length direction of the first positioning hole is adjustable so as to realize displacement adjustment of the first positioning hole and the fixing nail 1 in the front-back direction. The lower end of the fixing nail 1 is of a self-tapping screw structure, and the upper end of the fixing nail can be provided with a vertical groove matched with the tooth-shaped convex edge or diamond embossing to increase the friction resistance.
The outer side of the first positioning hole 2-2 is provided with a vertical opening 2-4, the two sides of the opening are connected through a locking screw 2-5, the left outer side wall and the right outer side wall of the first positioning hole 2-2 are provided with vertical deformation grooves 2-6, the cross sections of the deformation grooves 2-6 are semicircular, and the function of the deformation grooves is that the locking screw 2-5 is screwed to enable the deformation grooves to be matched with the outer wall of the first positioning hole 2-2 to bend inwards to deform, so that the fixing nail 1 is clamped.
The cross section of the second positioning hole 2-3 is a long round hole extending in the vertical direction, two through holes with internal threads are respectively arranged at the top and the bottom of the second positioning hole 2-3, an adjusting pin 2-7 is arranged in each through hole, and the adjusting pins 2-7 are in threaded fit with the through holes. The fixed connecting rod 3 is inserted into the second positioning holes 2-3, the width of the second positioning holes 2-3 is equivalent to the diameter of the fixed connecting rod 3, so that the fixed connecting rod 3 can translate or swing up and down in the second positioning holes 2-3, and the up-down position and the inclination angle of the fixed connecting rod 3 can be adjusted by adjusting the positions of the four adjusting pins 2-7, so that flexible adjustment is realized.
As shown in fig. 9, 10 and 11, another embodiment of a multi-dimensional adjustable fixed connector includes a first connection block 12-1 and a second connection block 12-2, the first connection block 12-1 is provided with a first positioning hole 12-1-1 for connecting with a fixing nail 1, and the first positioning hole is a circular hole and is adapted to the fixing nail.
The outer side of the first positioning hole 12-1-1 is provided with a vertical opening 12-1-2, the two sides of the opening are connected through a locking screw 12-1-3, the left outer side wall and the right outer side wall of the first positioning hole are provided with vertical deformation grooves 12-1-4, the cross section of each deformation groove is semicircular, and the deformation grooves have the function that the locking screw is screwed to enable the deformation grooves to be matched with the outer wall of the first positioning hole to be bent inwards to realize clamping of the fixing nail 1.
One side of the first connecting block 12-1, which is spliced with the second connecting block 12-2, is provided with a spline groove 12-1-5, the center in the spline groove is provided with an adjusting boss 12-1-6, and the adjusting boss is provided with a thread adjusting hole.
The second connecting block 12-2 is provided with a second positioning hole 12-2-1, and the second positioning hole 12-2-1 is a round hole and is matched with the fixed connecting rod 3. A spline connecting column 12-2-2 matched with the spline grooves 12-1-5 is arranged on the second connecting block 12-2, a containing hole matched with the adjusting boss is formed in the spline connecting column, and the second connecting block is assembled on the first connecting block through the spline connecting column.
An adjusting rod 12-3 penetrates through the second connecting block and comprises an adjusting knob 12-3-1 and an adjusting rod main body 12-3-2 fixed on the adjusting knob, the adjusting rod main body penetrates through the second positioning hole 12-2-1 to be in threaded connection with a threaded adjusting hole in the adjusting boss, a locking boss 12-3-3 is arranged on the inner side of the adjusting knob 12-3-1, a locking clamping hook 12-2-3 is arranged on the outer side wall of the second connecting block corresponding to the locking boss, and after the locking boss 12-3-3 is pressed into the second connecting block to be matched with the locking clamping hook 12-2-3, the adjusting rod 12-3 and the second connecting block can only rotate relatively and cannot axially displace along the adjusting rod main body 12-3-2.
In order to match the multi-dimensional adjustable fixed connecting piece with the structure, a through hole is correspondingly arranged on the fixed rod 2 so as to lead the adjusting rod 12-3 to pass through. During the use, earlier with first connecting block and staple fixed connection, then insert the spline inslot of second connecting block with the spline spliced pole of second connecting block, notice angle regulation when inserting, then insert fixed link in the second connecting block again, still can adjust the cooperation angle of spline spliced pole and spline groove again this moment, the spline on the spline spliced pole is more, and then the angle that can adjust is littleer, and the control range is also more accurate. If 360 splines are provided thereon, the adjustment accuracy thereof is 1 °.
After the adjusting rod 12-3 is installed, the position of the second connecting block can be adjusted by rotating the adjusting rod, so that the second connecting block can generate displacement in the axial direction of the adjusting rod 12-3, and multi-dimensional adjustment can be realized by combining the spline fit relation of the first connecting block and the second connecting block. Meanwhile, the adjusting rod 12-3 plays a role in fixing the fixed connecting rod. The fixed connecting rod can adjust the horizontal displacement of the fixed connecting rod through the first length adjusting mechanism. The fixed connecting rod can be provided with a plurality of through holes.
As another embodiment, the adjusting knob 12-3-1 of the adjusting lever 12-3 may be disposed inside the second positioning hole, and is close to one side of the spline groove, and a limiting mechanism is disposed between the adjusting knob and an inner side wall of the second connecting block, so that the adjusting knob can rotate but cannot move back and forth, a cross-shaped or straight-shaped knife edge may be disposed on the adjusting knob 12-3-1, and a through hole is disposed on an outer side wall of the second connecting block, so that a screwdriver may pass through and screw the adjusting knob, and thus, the adjusting knob may be screwed by a screw thread fit between the adjusting lever and the adjusting boss, and the second connecting block may not rotate due to the constraint of the spline during the adjustment process, and the finer the screw thread is, the finer the adjustment range is. In this state, a fixing structure, such as a locking jackscrew, for fixing the connecting rod to the second positioning hole needs to be disposed on the second positioning hole. As shown in fig. 2, the main body of the deformable connecting piece 4 is a stainless steel corrugated pipe, and comprises a corrugated pipe body 4-1 and a grouting opening 4-3 arranged on the corrugated pipe body 4-1, the left and right ends of the corrugated pipe body 4-1 are provided with connecting sleeves 4-4 for being fixedly connected with the end parts of the fixed connecting rods 3, and sealing rings 3-9 are arranged between the connecting sleeves 4-4 and the fixed connecting rods 3 to prevent slurry from flowing out. The connecting sleeve 4-4 and the fixed connecting rod 3 can be fixedly connected through a hoop 10 or a jackscrew 11. Specifically, a smooth transition part 4-2 is arranged in the middle of the corrugated pipe body 4-1, and the grouting port 4-3 is arranged on the transition part 4-2.
A plurality of lacing bars 4-6 are arranged in the corrugated pipe body 4-1, as shown in fig. 2 and fig. 3, positioning rings 4-7 are fixedly arranged on the left side and the right side of the corrugated pipe body 4-1, positioning lacing bars 4-8 with poor transverse and longitudinal directions are arranged on the positioning rings 4-7, the positioning lacing bars 4-8 are integrally in a net structure, the lacing bars 4-6 are connected at net nodes of the positioning lacing bars, and the net structure formed by the positioning lacing bars 4-8 has a certain deformation space and the lacing bars 4-6 also have predetermined elasticity, so that when the deformable connecting piece 4 is pressed to be passively deformed, the lacing bars 4-6 and the positioning lacing bars 4-8 can be deformed accordingly to adapt to the deformation of the whole body and play a role in restraining the deformation of the whole body and reinforcing the structure.
The left side and the right side of the deformable connecting piece 4 are provided with air outlets 4-5, the air outlets 4-5 are used for quickly discharging air in the deformable connecting piece 4 when slurry is injected, so that the grouting process is quick and smooth, and the air outlets 4-5 have a heat dissipation function, so that the slurry is quickly cured.
As a further optimization, the external fracture fixation frame provided by the invention also comprises a plurality of annular fixed traction frames, and the annular fixed traction frames are only used for assisting correction in an operation and can be detached after correction.
Every fixed traction frame corresponds a staple 1, and with staple 1 fixed connection, be provided with on the fixed traction frame and be used for with human skin in close contact with and increase frictional resistance's cushion 9, it is a plurality of wear to be equipped with two at least traction connecting rods 7 between the fixed traction frame, be provided with the second length adjustment mechanism 7-1 of adjustable traction connecting rod 7 length on the traction connecting rod 7. The rubber pad 9 can be a silica gel pad or an adhesive sticker and is adhered to the skin of the limb.
As shown in fig. 7, the fixed traction frame comprises two arc-shaped fixed plates 6 symmetrically arranged and a connecting plate 8 connecting the two arc-shaped fixed plates 6, the connecting plate 8 has certain elasticity, the rubber pad 9 is arranged on the connecting plate 8, and the upper ends of the arc-shaped fixed plates 6 are respectively connected with the fixing nails 1 through fixed plate connecting blocks 5.
The fixing plate connecting block 5 is arranged on the fixing nail 1 through a connecting hole on the fixing plate connecting block, and the connecting structure of the fixing plate connecting block can be connected with the fixing nail 1 by adopting a structure of a fixing connecting piece 2. The fixed plate connecting block 5 comprises a connecting block body 5-1, positioning rods 5-2 are fixedly arranged on the left side and the right side of the connecting block body, a connecting lug plate 6-2 is arranged at the upper end of the arc-shaped fixed plate 6, the connecting lug plate 6-2 is fixedly connected with the positioning rods 5-2 through nuts 5-3, and the diameter of the fixed traction frame can be adjusted by adjusting the positions of the connecting lug plate 6-2 and the positioning rods 5-2, so that the fixed traction frame is in close contact with limbs.
A plurality of connecting holes 6-1 are uniformly distributed on the arc-shaped fixing plate 6, the traction connecting rod 7 is fixed on the fixed traction frame through the connecting holes 6-1 and is connected with all the fixed traction frames, and the length of the traction connecting rod 7 can be adjusted through a second length adjusting mechanism 7-1 on the traction connecting rod 7 so as to realize auxiliary correction of the fracture position. The structure of the second length adjusting mechanism 7-1 is the same as that of the first length adjusting mechanism 3-1.
Example 2
The application method of the combined external fracture fixation frame in the embodiment 1 comprises the following steps:
step 1: two fixing nails 1 are respectively fixed on bones at two sides of the fracture, and the four fixing nails are kept parallel to each other as much as possible and are positioned on the same plane.
Step 2: the two fixed connecting rods 3 are fixedly connected by a deformable connecting piece 4.
And step 3: the fixing nails on the two sides are respectively fixed with corresponding fixing connecting rods on the fixing nails through fixing connecting pieces, and the positions of the fixing connecting rods are adjusted through the fixing connecting pieces.
And 4, step 4: the position that corresponds the staple sets up the fixed traction frame cover that has the open-ended annular on the limbs to with the open end and the staple fixed connection of annular fixed traction frame, adjust fixed traction frame, and through set up the cushion and increase frictional force with limbs skin in close contact with on fixed traction frame.
And 5: at least two traction connecting rods with adjustable length are arranged between the fixed traction frames.
And 6: the length of the fixed connecting rod 3 and the length of the traction connecting rod are adjusted simultaneously, the position of the bone is corrected, the position is corrected through the first length adjusting mechanism and the second length adjusting mechanism, as shown in figure 1, the traction connecting rod is horizontally arranged, and the traction connecting rod can be obliquely arranged to realize multi-dimensional adjustment.
And 7: and injecting normal-temperature fast-setting hardened slurry into the deformable connecting piece 4 to ensure that the deformable connecting piece 4 cannot deform during curing.
And 8: and (5) removing the fixed traction frame and the traction connecting rod, and keeping the fixed nail and the fixed connecting rod.
Since the limb itself is irregularly shaped and it is difficult to ensure that the four pegs are parallel and in the same plane when the pegs 1 are inserted, this problem can be overcome by a fixed connection and a variable connection that are adjustable in multiple dimensions.
The normal-temperature rapid solidification hardening material adopted by the invention can be agar, and can also be a material prepared by the following formula:
the composite material is characterized by comprising epoxy resin 6101, a cardanol epoxy resin curing agent 2015, a curing accelerator DMP-30, acetone and zirconia ceramic balls with the particle size of 1-1.5 mm, wherein the weight parts of the epoxy resin 6101, the cardanol epoxy resin curing agent 2015, the curing accelerator DMP-30 and the acetone are 35-60 parts, 8-16 parts, 3-8 parts and 1-5 parts in sequence, and the volume ratio of the total volume of the epoxy resin 6101, the cardanol epoxy resin curing agent 2015, the curing accelerator DMP-30 and the acetone to the volume of the zirconia ceramic balls with the particle size of 1-1.5 mm is 1: 1.
Or rapid-setting cement, such as No. 1000 cement, is adopted, water is added at a proper time and stirred to prepare slurry, then the slurry is filled in a closed extrudable device, after all positions and angles of the fixing frame are adjusted, the slurry is rapidly injected through the slurry injection port, and then the changeability connecting piece is kept as far as possible to rapidly dissipate heat so as to ensure rapid setting of the connecting piece.
It is also possible to use a glue which sets quickly and has sufficient strength.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A combined external fixation frame for fracture is characterized by comprising:
a plurality of fixing nails (1) which are respectively used for fixing on bones at two sides of a fracture;
the number of the fixed connecting pieces (2) corresponds to that of the fixed nails (1), and the fixed connecting pieces are used for being fixed on the fixed nails (1) and providing a structure connected with the fixed connecting rods (3);
the two fixed connecting rods (3) are respectively and fixedly connected with the fixed nails (1) at the two sides of the fracture part through the fixed connecting pieces (2);
the deformable connecting piece (4) is in a hollow tubular shape, and two ends of the deformable connecting piece are respectively connected with the near ends of the two fixed connecting rods (3) so that the two fixed connecting rods (3) are connected to form an integral structure;
be provided with slip casting mouth (4-3) on deformable connecting piece (4), after adjusting fixed link (3) position, through slip casting mouth (4-3) to but pour into the thick liquids of normal atmospheric temperature rapid solidification sclerosis in deformable connecting piece (4), realize the solidification of deformable connecting piece (4), make it can not warp.
2. The combined external fixation frame for bone fracture as claimed in claim 1, wherein the fixed connecting rod (3) is provided with a first length adjusting mechanism (3-1), and the length of the fixed connecting rod (3) can be adjusted by the first length adjusting mechanism (3-1).
3. The modular external fracture fixation frame of claim 1, comprising: the fixing and connecting piece (2) comprises a fixing and connecting piece main body (2-1), a first positioning hole (2-2) matched with the fixing nail (1) is formed in one side of the fixing and connecting piece main body (2-1), a second positioning hole (2-3) matched with the fixing and connecting rod (3) is formed in the other side of the fixing and connecting piece main body, the axis of the first positioning hole (2-2) is perpendicular to the axis of the second positioning hole (2-3), the cross section of the first positioning hole (2-2) is rectangular, so that the position of the first positioning hole and the position of the fixing nail (1) can be adjusted forwards and backwards, a vertical opening (2-4) is formed in the outer side of the first positioning hole (2-2), and the two sides of the opening are connected through locking screws (2-5).
4. The modular external fracture fixation frame of claim 3, comprising: the cross section of the second positioning hole (2-3) is a long round hole extending in the vertical direction, two through holes with internal threads are respectively formed in the top and the bottom of the second positioning hole (2-3), an adjusting pin (2-7) is arranged in each through hole, and the adjusting pins (2-7) are in threaded fit with the through holes.
5. The combined external fixation frame for bone fracture as claimed in claim 1, wherein the deformable connecting member (4) is a stainless steel corrugated tube, and comprises a corrugated tube body (4-1), and a grouting port (4-3) provided on the corrugated tube body (4-1), and connecting sleeves (4-4) for fixedly connecting with the ends of the fixed connecting rods (3) are provided at the left and right ends of the corrugated tube body (4-1).
6. The combined external fixation frame for bone fracture of claim 5, wherein a plurality of tie bars (4-6) are arranged in the bellows body (4-1).
7. The combined external fixation frame for bone fracture of claim 5, wherein the deformable connecting piece (4) is provided with air vents (4-5) at the left and right sides.
8. The combined external fixation frame for bone fracture according to claim 1, further comprising a plurality of annular fixed traction frames, each fixed traction frame corresponds to one of the fixation nails (1) and is fixedly connected with the fixation nail (1), the fixed traction frames are provided with rubber pads (9) which are used for being in close contact with the skin of the human body and increasing the frictional resistance, at least two traction connecting rods (7) penetrate between the plurality of fixed traction frames, and the traction connecting rods (7) are provided with second length adjusting mechanisms (7-1) capable of adjusting the lengths of the traction connecting rods (7).
9. The combined external fixation frame for bone fracture as claimed in claim 8, wherein the fixation traction frame comprises two symmetrically arranged arc-shaped fixation plates (6) and a connection plate (8) connecting the two arc-shaped fixation plates (6), the connection plate (8) has a certain elasticity, the rubber pad (9) is arranged on the connection plate (8), and the upper end portions of the arc-shaped fixation plates (6) are respectively connected with the fixation nails (1) through fixation plate connection blocks (5).
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| CN202110599717.2A CN113288381B (en) | 2021-05-31 | 2021-05-31 | Combined external fixing frame for fracture and using method thereof |
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| CN102283699B (en) * | 2011-06-29 | 2013-01-16 | 成永忠 | Combination type ankle joint three-dimensional traction fixing frame |
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