CN110403687A - A kind of minimally invasive fixed device of tibial eminence fracture - Google Patents
A kind of minimally invasive fixed device of tibial eminence fracture Download PDFInfo
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- CN110403687A CN110403687A CN201910697066.3A CN201910697066A CN110403687A CN 110403687 A CN110403687 A CN 110403687A CN 201910697066 A CN201910697066 A CN 201910697066A CN 110403687 A CN110403687 A CN 110403687A
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- stick
- cannulated sleeve
- fixing piece
- traction rope
- umbrella crown
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- 210000002303 tibia Anatomy 0.000 claims abstract description 45
- 230000001737 promoting effect Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000009827 uniform distribution Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- 230000006378 damage Effects 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 3
- 238000001356 surgical procedure Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000002324 minimally invasive surgery Methods 0.000 abstract description 2
- 230000000399 orthopedic effect Effects 0.000 abstract description 2
- 208000010392 Bone Fractures Diseases 0.000 description 31
- 206010017076 Fracture Diseases 0.000 description 31
- 238000010586 diagram Methods 0.000 description 9
- 208000027418 Wounds and injury Diseases 0.000 description 6
- 210000000988 bone and bone Anatomy 0.000 description 6
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 206010023230 Joint stiffness Diseases 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 208000015181 infectious disease Diseases 0.000 description 3
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 210000003127 knee Anatomy 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000522 condylus lateralis femoris Anatomy 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 210000000629 knee joint Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/683—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/685—Elements to be fitted on the end of screws or wires, e.g. protective caps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/846—Nails or pins, i.e. anchors without movable parts, holding by friction only, with or without structured surface
Abstract
A kind of minimally invasive fixed device of tibial eminence fracture, belongs to orthopedic medical device technical field, for carrying out minimally invasive fixation to tibial eminence fracture.Its technical solution is: cannulated sleeve is inserted in the fixed jack of shin bone, between fixed jack is located at below shin bone end face and tibial tubercle, fixing piece is located at the upper end of cannulated sleeve, stick is promoted to be located at the rear of fixing piece, the upper end of stick is promoted to withstand on the lower end of fixing piece, the outer wall of fixing piece and propulsion stick is to be slidably matched with cannulated sleeve inner wall, and fixing piece is connected with the upper end of traction rope, and the lower end of traction rope is stretched out along cannulated sleeve backward outside the fixed jack of shin bone.The configuration of the present invention is simple, clinical manipulation are convenient, surgical procedure is easy, it can be fractured by minimally invasive fixed tibial intercondyloid spine, avoid the disadvantages of operation wound caused by open reduction and Kirschner wire fixation method is big, damage is big, the defect of reduction fixation operation performance difficulty under arthroscope is also overcomed, is progress of the Minimally Invasive Surgery in orthopaedic medical treatment technology.
Description
Technical field
The present invention relates to the devices that a kind of pair of tibial eminence fracture carries out minimally invasive fixation, belong to orthopedic medical device technology
Field.
Background technique
Currently, tibial eminence fracture disease incidence is about 3/,100,000, as what traffic accident and people took exercises increases
And it is in raising trend.Tibial eminence fracture was reported by Poncet in 1875 first earliest, was mostly damaged by traffic accident and movement
Caused by wound, common injury mechanism is that rotation stress merges hyperextension damage.Tibial eminence fracture belongs to intraarticular damage, clinically
It the use of more intercondyloid spine fracture classification system is to be proposed by Meyers in nineteen fifty-nine, the analysis system is according to displacement degree
Such fracture is divided into 3 types: I type intercondyloid spine fracture for fracture without displacement, and II type intercondyloid spine fracture is transposition of partial fracture, III type
Intercondyloid spine fracture is displacement fracture completely.I type, which is fractured, takes the mode of conservative therapy, and III type fracture needs operative treatment, but II
There are still disagreements for the therapeutic modality of type fracture.
It is resetted currently, the therapeutic modality of tibial eminence fracture can be generally divided under open reduction and Kirschner wire fixation and arthroscope
Inside fix 2 kinds.Shankbone treated by Internal Fixation Openreduction intercondyloid spine fracture operation wound is big, destroys knee joint peripheral medial and lateral
Support the structures such as band, it is possible to cause the complication such as infection and joint stiffness；Reduction fixation treatment shin bone is intercondylar under arthroscope
Spine trauma fracture is small, and complication rate is low, but long using Arthroscopic Treatment learning cycle, it is difficult to promote in basic hospital.With
Extensive development of the minimal invasive techniques in medical field, increasingly show the superiority of minimal invasive techniques, orthopaedics minimal invasive techniques also by
To the welcome of medical worker and patient, becomes the following bone surgery and develop important directions.Currently, having no using minimal invasive techniques to shin
The report of bone intercondyloid spine implementation reduction fixation, it is quite necessary to which researching and designing implements intercondylar spine of tibia using minimal invasive techniques multiple
Fixed utensil or device in position promote minimal invasive techniques in orthopaedics to expand the technological means of intercondylar spine of tibia reduction fixation
The development of medical field.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of minimally invasive fixed devices of tibial eminence fracture, pass through this
The minimally invasive fixed device of kind can be fractured with fixed tibial intercondyloid spine, avoid wound of performing the operation caused by existing open reduction and Kirschner wire fixation method
Wound is big, damage is big, is possible to the shortcomings that causing the complication such as infection and joint stiffness, also overcomes reduction fixation under arthroscope
Operation performance difficulty is not easy the defect carried out extensively, provides for minimal invasive operation tibial eminence fracture reduction fixation
New technical support.
The technical solution for solving above-mentioned technical problem is:
A kind of minimally invasive fixed device of tibial eminence fracture, it includes cannulated sleeve, fixing piece, promotes stick, traction rope, hollow
Sleeve is straight barrel, and cannulated sleeve is inserted in the fixed jack of shin bone, and the upper end of fixed jack is located at the intercondyloid spine bone of shin bone
Shin bone end face below folded block, the lower end of fixed jack are located on the shin bone side wall below tibial tubercle, the upper end of cannulated sleeve
With shin bone end face, fixing piece and propulsion stick are respectively inserted into cannulated sleeve, and fixing piece is located at the upper end of cannulated sleeve, pushes away
Be located at the rear of fixing piece into stick, the upper end of stick promoted to withstand on the lower end of fixing piece, fixing piece and promote the outer wall of stick with it is hollow
Sleeve lining is to be slidably matched, and fixing piece is connected with the upper end of traction rope, and the lower end of traction rope is along cannulated sleeve to extending back
Out outside the fixed jack of shin bone.
The minimally invasive fixed device of above-mentioned tibial eminence fracture, the fixing piece are the hold-down bars of cylindrical body, hold-down bars
The internal diameter of cylinder diameter and cannulated sleeve matches, and is provided with cord hole, traction rope along the central axis of hold-down bars length direction
Upper end pass through hold-down bars cord hole turn back backward, shin bone is stretched out together along cannulated sleeve in the top and bottom of traction rope backward
Fixed jack outside.
The minimally invasive fixed device of above-mentioned tibial eminence fracture, the cylindrical sides of the hold-down bars have along barred body length
The groove in direction promotes the barred body side of stick to have the groove along barred body length direction, the barred body groove and propulsion stick of hold-down bars
Barred body groove it is opposite, traction rope embedded in hold-down bars and promote stick groove in.
The minimally invasive fixed device of above-mentioned tibial eminence fracture, the fixing piece are columnar umbrella crown, the cylinder of umbrella crown
The internal diameter of shape diameter and cannulated sleeve matches, and the cylindrical front end of umbrella crown has arc-shaped top surface to close, the cylinder rear portion of umbrella crown
Have multiple press strips, the length direction of press strip along umbrella crown length direction, multiple press strips around umbrella crown circumference uniform distribution, press strip
Lower end is opposite with the upper end of stick is promoted, and the inner wall of arc-shaped top surface of umbrella crown is connected with the upper end of traction rope, under traction rope
End is stretched out from umbrella crown lower end, is stretched out backward outside the fixed jack of shin bone along cannulated sleeve.
The minimally invasive fixed device of above-mentioned tibial eminence fracture, the front of the propulsion stick below the umbrella crown are taper, cone
The front end of shape is extend into the circular umbrella crown cylinder bore of multiple press strips of umbrella crown, the inner wall of cannulated sleeve to the outer wall of press strip into
Row constraint, so that the rear end of taper is withstood on the lower end surface of the press strip of umbrella crown, promotes the barred body side of stick to have along barred body length
The lower end of the groove in direction, traction rope is stretched out in the groove for promoting stick from umbrella crown lower end.
The minimally invasive fixed device of above-mentioned tibial eminence fracture, the cannulated sleeve, fixing piece, traction rope are absorbable material
Material production.
The beneficial effects of the present invention are:
Cannulated sleeve of the invention extend into shin bone end face from shin bone side, and fixing piece is under the promotion for promoting stick from cannulated sleeve
Shin bone end face is reached, fixing piece passes through the top that intercondyloid spine sclerite reaches intercondyloid spine sclerite, and drawing traction rope makes fixing piece
Compressing in the top of intercondyloid spine sclerite, from cannulated sleeve below be strained and fixed traction rope, make fixing piece by intercondyloid spine sclerite
It is fixed.
The present invention is the pioneering of minimally invasive fixed tibial intercondyloid spine sclerite, solves tibial eminence fracture block and is difficult to reset
Fixed problem provides new surgical instrument for minimal invasive operation tibial eminence fracture reduction fixation.Knot of the present invention
Structure is simple, clinical manipulation is convenient, surgical procedure is easy, can be fractured, be avoided existing by minimally invasive fixed tibial intercondyloid spine
Operation wound caused by open reduction and Kirschner wire fixation method is big, damage is big, is possible to cause the complication such as infection and joint stiffness
Disadvantage also overcomes reduction fixation operation performance difficulty under arthroscope, is not easy the defect carried out extensively, is Minimally Invasive Surgery in bone
Progress in section's medical technology has fabulous popularizing value.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention；
Fig. 2 is the use state diagram of Fig. 1；
Fig. 3 is the stationary state schematic diagram of Fig. 2；
Fig. 4 is another structural schematic diagram of the invention；
Fig. 5 is the use state diagram of Fig. 4；
Fig. 6 is the stationary state schematic diagram of Fig. 5；
Fig. 7 is hold-down bars and the groove structure schematic diagram for promoting stick；
Fig. 8 is the schematic diagram for promoting stick and umbrella crown in cannulated sleeve；
Fig. 9 is the schematic diagram for promoting stick to open umbrella crown.
In figure mark it is as follows: shin bone 1, intercondyloid spine sclerite 2, fixed jack 3, cannulated sleeve 4, hold-down bars 5, propulsion stick 6,
Traction rope 7, groove 8, umbrella crown 9, press strip 10, taper 11, fixinig plate 12.
Specific embodiment
The present invention is made of cannulated sleeve 4, fixing piece, propulsion stick 6, traction rope 7, and cannulated sleeve 4 is protruded into from 1 side of shin bone
Shin bone end face, fixing piece promote stick 6 promotion under from cannulated sleeve 4 reach shin bone end face, fixing piece pass through intercondyloid spine bone
Folded block 2 reaches the top of intercondyloid spine sclerite 2, and drawing traction rope 7 makes fixing piece compressing in the top of intercondyloid spine sclerite 2, from
Be strained and fixed traction rope 7 below cannulated sleeve 4, keeps fixing piece that intercondyloid spine sclerite 2 is fixed.
It is shown in figure, present invention needs punch on shin bone 1, and the upper end of the fixed jack 3 of shin bone 1 is located at the condyle of shin bone 1
Between the lower section of spine sclerite 2 shin bone end face, the lower end of fixed jack 3 is located on the shin bone side wall below tibial tubercle, hollow sleeve
Cylinder 4 is straight barrel, and cannulated sleeve 4 is inserted in the fixed jack 3 of shin bone 1, the upper end of cannulated sleeve 4 and shin bone end face.
Cannulated sleeve 4 of the invention, fixing piece, traction rope 7 are absorbable material production, in the intercondyloid spine bone to shin bone 1
Folded block 2 retains in vivo after being fixed, and is gradually absorbed by the body, and does not have to take out.
Fig. 1,2,3 show that fixing piece is the hold-down bars 5 of cylindrical body, cylinder diameter and the cannulated sleeve 4 of hold-down bars 5
Internal diameter matches, and hold-down bars 5 and propulsion stick 6 are respectively inserted into cannulated sleeve 4, and hold-down bars 5 is located at the upper end of cannulated sleeve 4,
It promotes stick 6 to be located at the rear of hold-down bars 5, the upper end of stick 6 is promoted to withstand on the lower end of hold-down bars 5, hold-down bars 5 is outer with propulsion stick 6
Wall is to be slidably matched with 4 inner wall of cannulated sleeve, and hold-down bars 5 is connected with the upper end of traction rope 7, and the lower end of traction rope 7 is along sky
Heart sleeve 4 is stretched out backward outside the fixed jack 3 of shin bone 1.
Fig. 1,2,3 show that the central axis of 5 length direction of hold-down bars is provided with cord hole, and the upper end of traction rope 7 passes through hold-down bars
5 cord hole is turned back backward, and the top and bottom of traction rope 7 stretch out the fixed jack 3 of shin bone 1 together along cannulated sleeve 4 backward
Outside.After hold-down bars 5 reaches the top of intercondyloid spine sclerite 2, the traction rope 7 of 5 upper end side of hold-down bars is pulled, hold-down bars 5 is by hanging down
Straight position is turned to horizontal position, and length is greater than perforation, will not retract, and the fixed jack of shin bone 1 is stretched out in the lower end of traction rope 7
It outside 3, is knotted and is fixed by fixinig plate 12, intercondyloid spine sclerite 2 is fixed to realize.
Fig. 7 shows that the cylindrical sides of hold-down bars 5 have the groove 8 along barred body length direction, promotes the barred body side of stick 6
There is the groove 8 along barred body length direction in face, and the barred body groove 8 of hold-down bars 5 and the barred body groove 8 of propulsion stick 6 are opposite, traction rope
7 in the groove 8 of hold-down bars 5 and propulsion stick 6, and traction rope 7 will not when pushing hold-down bars 5 and promoting stick 6 for such structure
It influences hold-down bars 5 and stick 6 is promoted smoothly to slide in cannulated sleeve 4.
Fig. 4,5,6 show that fixing piece is columnar umbrella crown 9, the cylinder-shaped diameter of umbrella crown 9 and the internal diameter of cannulated sleeve 4
Match, the cylindrical front end of umbrella crown 9 has arc-shaped top surface to close, and the cylinder rear portion of umbrella crown 9 there are multiple press strips 10, press strip 10
Length direction of the length direction along umbrella crown 9, the circumference uniform distribution of the circular umbrella crown 9 of multiple press strips 10, the lower end of press strip 10 and propulsion
The upper end of stick 6 is opposite, and the inner wall of the arc-shaped top surface of umbrella crown 9 is connected with the upper end of traction rope 7, and the lower end of traction rope 7 is from umbrella
9 lower end of cap is stretched out, and is stretched out backward outside the fixed jack 3 of shin bone 1 along cannulated sleeve 4, is knotted and is fixed by fixinig plate 12.
The front of Fig. 8,9 displays, the propulsion stick 6 of 9 lower section of umbrella crown are taper, and the front end of taper extend into the multiple of umbrella crown 9
In the circular umbrella crown cylinder bore of press strip 10.When promoting stick 6 and umbrella crown 9 to be in cannulated sleeve 4, cannulated sleeve 4 it is interior
Wall constrains the outer wall of the press strip 10 of umbrella crown 9, so that the rear end of the taper 11 of propulsion stick 6 withstands on the press strip 10 of umbrella crown 9
On lower end surface, umbrella crown 9 is pushed to advance forward；When umbrella crown 9 is pushed to outside 4 front end of cannulated sleeve, the press strip 10 of umbrella crown 9 is not
Constraint by 4 inner wall of cannulated sleeve again promotes the taper 11 of 6 front end of stick to strut the press strip 10 of umbrella crown 9 outward as umbrella, this
When pull back traction rope 7, the press strip 10 of umbrella crown 9 will be downwardly against the upper surface of intercondyloid spine sclerite 2 of shin bone 1, by intercondyloid spine
Sclerite 2 is fixed.Equally, the barred body side of stick 6 is promoted to have the groove 8 along barred body length direction, the lower end of traction rope 7
It is stretched out in the groove 8 for promoting stick 6 from 9 lower end of umbrella crown.
It is of the invention use process is as follows:
After entire patient anaesthetizes successfully, dorsal position is taken, routine disinfection paving is single.
It is drawn first using Zhang Shi traction restorer, gently retracts Zhang Shi traction restorer, make knee space slightly
It is broadening.After positioning knee space using 5mL syringe needle, the kirschner that 3 pieces of diameters are 2.5mm is placed in along the direction of syringe needle
Needle confirms the position of Kirschner wire needle end under the conditions of C-arm auxiliary perspective, is located at the upper of tibial eminence fracture block 2
Side.
Using condylus lateralis femoris as interim fulcrum, Kirschner wire tail end is proximally pushed, at this time the head end of Kirschner wire
Downward pressure is formed to intercondyloid spine sclerite 2, thus by 2 anatomical reduction of tibial eminence fracture block.
After C-arm has an X-rayed lower display effect satisfaction, sclerite is directed toward from the position of tibial tubercle lower section about 5cm and is set obliquely
Enter 1 piece of hollow nail guide pin, after adjustment observation guide pin position is correct under Perspective Conditions, using core drill reaming, and will be opposite
Intercondyloid spine sclerite 2 drills, and is then placed in cannulated sleeve 4 in the drilling of shin bone 1.
Replacement and fixation is carried out to intercondyloid spine sclerite 2 using hold-down bars 5 or umbrella crown 9 individually below.
Use the operation of hold-down bars 5:
Using promoting stick 6 that the hold-down bars 5 with traction rope 7 is pushed into cannulated sleeve 4, promote stick 6 that hold-down bars 5 is released hollow sleeve
The drilling that intercondyloid spine sclerite 2 is passed through after cylinder 4 reaches the top of intercondyloid spine sclerite 2；It exits and promotes stick 6, pull on hold-down bars 5
The traction rope 7 of side is held, hold-down bars 5 is turned to horizontal position by upright position, the both ends of traction rope 7 are then pulled together, Gu
Determine stick 5 and be pressed on 2 top of intercondyloid spine sclerite, the lower end of traction rope 7 pulls out outside the fixed jack 3 of shin bone 1, passes through fixinig plate 12
It knots and fixes, complete the replacement and fixation to intercondyloid spine sclerite 2.
Use the operation of umbrella crown 9:
Using promoting stick 6 that the umbrella crown 9 with traction rope 7 is pushed into cannulated sleeve 4, the press strip of the inner wall of cannulated sleeve 4 to umbrella crown 9
10 outer wall is constrained, so that the rear end of the taper of stick 6 is promoted to withstand on the lower end surface of press strip 10 of umbrella crown 9, is pushed forward
Umbrella crown 9 advances.Promote stick 6 that the drilling for passing through intercondyloid spine sclerite 2 after the release cannulated sleeve 4 of umbrella crown 9 is reached intercondyloid spine fracture
At this moment the top of block 2 promotes the taper 11 of 6 front end of stick to strut the press strip 10 of umbrella crown 9 outward as umbrella, exit propulsion stick 6, to
The press strip 10 of post-tensioning traction rope 7, umbrella crown 9 will be downwardly against the upper surface of intercondyloid spine sclerite 2 of shin bone 1, pull out traction
Rope 7, intercondyloid spine sclerite 2 is fixed, and the lower end of traction rope 7 pulls out outside the fixed jack 3 of shin bone 1, passes through fixinig plate 12
It knots and fixes, complete the replacement and fixation to intercondyloid spine sclerite 2.
The embodiment of the present invention is as follows:
Cannulated sleeve 4 is made by carbon fiber, outer diameter 4mm, internal diameter 3mm, length 70mm；
Hold-down bars 5 is made by carbon fiber, diameter 2.9mm, length 5mm；
The diameter for promoting stick 6 is 2.9mm, length 100mm；
Traction rope 7 is made by carbon fiber, diameter 0.5mm；
Umbrella crown 9 is made by carbon fiber, diameter 2.9mm, length 5.2mm, and wherein the length of press strip 10 is 3mm, and width is
0.8mm。
Claims (6)
1. a kind of minimally invasive fixed device of tibial eminence fracture, it is characterised in that: it includes cannulated sleeve (4), fixing piece, pushes away
Into stick (6), traction rope (7), cannulated sleeve (4) is straight barrel, and cannulated sleeve (4) is inserted in the fixed jack (3) of shin bone (1)
Interior, the upper end of fixed jack (3) is located at the shin bone end face below the intercondyloid spine sclerite (2) of shin bone (1), fixed jack (3)
Lower end is located on the shin bone side wall below tibial tubercle, the upper end of cannulated sleeve (4) and shin bone end face, fixing piece and propulsion
Stick (6) is respectively inserted into cannulated sleeve (4), and fixing piece is located at the upper end of cannulated sleeve (4), and stick (6) is promoted to be located at fixing piece
Rear, promote the upper end of stick (6) to withstand on the lower end of fixing piece, fixing piece and promote the outer wall of stick (6) and cannulated sleeve (4) interior
Wall be slidably matched, fixing piece is connected with the upper end of traction rope (7), the lower end of traction rope (7) along cannulated sleeve (4) backward
Stretch out the fixed jack (3) of shin bone (1) outside.
2. the minimally invasive fixed device of tibial eminence fracture according to claim 1, it is characterised in that: the fixing piece is
The internal diameter of the hold-down bars (5) of cylindrical body, the cylinder diameter and cannulated sleeve (4) of hold-down bars (5) matches, along hold-down bars
(5) central axis of length direction is provided with cord hole, and the cord hole that the upper end of traction rope (7) passes through hold-down bars (5) is turned back backward, drawn
The fixed jack (3) of shin bone (1) is stretched out outside backward together along cannulated sleeve (4) in the top and bottom of rope (7).
3. the minimally invasive fixed device of tibial eminence fracture according to claim 2, it is characterised in that: the hold-down bars
(5) cylindrical sides have the groove (8) along barred body length direction, and the barred body side of stick (6) is promoted to have along barred body length
The groove (8) in direction, the barred body groove (8) of hold-down bars (5) and promotes the barred body groove (8) of stick (6) traction rope (7) is embedding relatively
In hold-down bars (5) and the groove (8) of propulsion stick (6).
4. the minimally invasive fixed device of tibial eminence fracture according to claim 1, it is characterised in that: the fixing piece is
The internal diameter of columnar umbrella crown (9), the cylinder-shaped diameter and cannulated sleeve (4) of umbrella crown (9) matches, the cylindrical shape of umbrella crown (9)
Front end has arc-shaped top surface to close, and the cylinder rear portion of umbrella crown (9) has multiple press strips (10), and the length direction of press strip (10) is along umbrella
The length direction of cap, for multiple press strips (10) around the circumference uniform distribution of umbrella crown (9), the lower end of press strip (10) is upper with propulsion stick (6)
End is opposite, and the inner wall of the arc-shaped top surface of umbrella crown (9) is connected with the upper end of traction rope (7), and the lower end of traction rope (7) is from umbrella crown
(9) lower end is stretched out, and stretches out the fixed jack (3) of shin bone (1) outside backward along cannulated sleeve (4).
5. the minimally invasive fixed device of tibial eminence fracture according to claim 4, it is characterised in that: the umbrella crown (9)
The front of the propulsion stick (6) of lower section is taper (11), and multiple press strips (10) that the front end of taper (11) extend into umbrella crown (9) are surround
Umbrella crown cylinder bore in, the inner wall of cannulated sleeve (4) constrains the outer wall of press strip (10), so that the rear end of taper (11)
It withstands on the lower end surface of press strip (10) of umbrella crown (9), the barred body side of stick (6) is promoted to have the groove along barred body length direction
(8), the lower end of traction rope (79) is stretched out in the groove (8) for promoting stick (6) from umbrella crown (9) lower end.
6. the minimally invasive fixed device of tibial eminence fracture according to claim 1, it is characterised in that: the cannulated sleeve
(4), fixing piece, traction rope (7) are absorbable material production.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910697066.3A CN110403687A (en) | 2019-07-30 | 2019-07-30 | A kind of minimally invasive fixed device of tibial eminence fracture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910697066.3A CN110403687A (en) | 2019-07-30 | 2019-07-30 | A kind of minimally invasive fixed device of tibial eminence fracture |
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| CN108904023A (en) * | 2018-05-30 | 2018-11-30 | 兰州大学 | Posterior cruciate ligament of knee avulsion fracture fixes device |
| CN210962257U (en) * | 2019-07-30 | 2020-07-10 | 河北医科大学第三医院 | Minimally invasive fixing device for tibial intercondylar eminence fracture |
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