CN207202926U - Patellar fracture internal fixation device - Google Patents
Patellar fracture internal fixation device Download PDFInfo
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- CN207202926U CN207202926U CN201720182104.8U CN201720182104U CN207202926U CN 207202926 U CN207202926 U CN 207202926U CN 201720182104 U CN201720182104 U CN 201720182104U CN 207202926 U CN207202926 U CN 207202926U
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Abstract
A kind of patellar fracture internal fixation device is the utility model is related to, described fixator includes upper end fixing device, fixing lower, pressue device；Described upper end fixing device includes upper end fixed plate, upper end fixed claw, upper end raised plate；Described upper end fixed claw is connected to the side of upper end fixed plate；The outer surface of the upper end fixed plate is provided with upper end raised plate；Described fixing lower includes lower end fixed plate, lower end fixed claw, lower end raised plate；The outer surface of the lower end fixed plate is provided with lower end raised plate.Its advantage is shown：The internal fixing device for patellar fracture is fixed after sclerite by upper end fixed claw and lower end fixed claw, can be by tightening middle pressurization screw rod, sclerite pressurization is gathered, multiple locking nail are also distributed with fixing device, according to fracture site and it can need to fix broken bone piece using screw, so as to reach good fixed fracture effect.Patient can be allowed early stage to carry out functional training, function of joint is obtained good recovery.
Description
Technical field
Technical field of medical instruments is the utility model is related to, is a kind of patellar fracture internal fixation device specifically.
Background technology
Patellar fracture is one of common fracture of knee, with the aggravation of social population's aging and the hair of communications and transportation
Exhibition, the incidence of patellar fracture substantially increase, and are divided into transecting type fracture, upper pole or lower pole fracture, powder according to the form of fracture line
Broken fracture, stringer fissure fracture and osteochondral fracture, kneecap are the important components of Quadriceps mechanism, and it means to stretch after fracturing
Knee device is by serious infringement.Therefore most comminuted patellar need to consider operative treatment.Therapeutic purposes are weights
The continuity of Quadriceps mechanism is built, recovers the smooth of facies articularis patellae and reaches the strong fixation for allowing early ambulant.
, it is necessary to be resistant to the interior fixation of high-tension during patellar fracture operative treatment, generally use multipurpose is locked in the prior art
Determine steel plate (X-shaped steel plate), patella claw, tension band wiring and carry out interior fixation.However, exist in actual use following
Deficiency and defect.
Multipurpose locking steel plate (X-shaped steel plate) only has four screw holes, may be only available for kneecap body portion transverse fracture, it is impossible to
Fractured for the pole up and down of comminuted fracture and kneecap；
Patella claw is integral type overall structure, and size is fixed, though there are multiple models, because being difficult often in individual difference art
Select suitable model；Because patella claw is integral type structure, it is difficult to which the contraction simultaneously of adjusting size, claw and body portion often occurs hollow
Phenomenon, or even there is de- pawl phenomenon, so fixation sclerite is relatively difficult during operation, and there is no pressurization, to comminuted
Fracture fixation effect it is not strong.Patella claw using when need medical worker single-handedly to fix, but this single-handedly make patella claw and kneecap
The mode that bone is combined closely, due to strength very little, and gradual pressurization can not be carried out so that patella claw can not be tight with kneecap
Close combination, and then there is the larger phenomenon in fracture gap, cause union required time longer, brought to patient's action life
Inconvenience.
Tension band wiring is most traditional method, but easily steel wire slips, and steel wire is difficult to tighten and causes Kirschner wire
Skid off, skin irritatin pain, it is easily bad to pole fracture and comminuted fracture fixed effect under kneecap.Patient is influenceed to enter early stage
Row knee joint training.It is reported that during using patella fracture with tensile band wire, the case for having up to 47% can occur
Various complication, such as fixture stimulate skin and hypodermis, and Kirschner wire is loosened, is broken, displacement is even passed outside skin.
Chinese patent literature CN201020502998.2, applying date 2010.08.25, patent name are：One kind treats kneecap
The encircling fixator of fracture, a kind of encircling fixator for treating patellar fracture is disclosed, belongs to orthopedic medical device technical field,
For avoiding the generation of multiple complications, reset fracture fixation accurate, firm, its technical scheme is：It is by surrounded slice and side
Fork composition, surrounded slice is strip thin slice, and there are the radian to match with kneecap upper periphery or following peripheral, the both sides of surrounded slice in its axial direction
There are multiple sides to pitch, the upper and lower surface of the direction of side fork along kneecap, there are multiple screws in the plate face of surrounded slice.It is this to encircle admittedly
The advantages of determining guider is that the patellar fracture of the interim fixed reset of fixator can be used in art, is discontented with if X-ray examination resets
Meaning, can further it adjust until anatomical reduction；Screw is easy to accurately insert guide pin and screw is finally fixedly secured；It can use minimally invasive
Operation, it is small to soft tissue injury, be advantageous to protect kneecap blood fortune, beneficial to union.But on one kind can adjusting size,
It is brought into close contact with kneecap, sclerite is gathered in gradual pressurization, and can fix the patellar fracture internal fixation device of broken bone piece then without corresponding
Disclosure.
In summary, need badly one kind can adjusting size, be brought into close contact with kneecap, sclerite is gathered in gradual pressurization, and
The patellar fracture internal fixation device of broken bone piece can be fixed, and report is yet there are no on this bone fracture internal fixing device.
The content of the invention
The purpose of this utility model is to be directed to deficiency of the prior art, there is provided kind can adjusting size, it is close with kneecap
Fitting, sclerite is gathered in gradual pressurization, and can fix the patellar fracture internal fixation device of broken bone piece.
To achieve the above object, the utility model adopts the technical scheme that：
A kind of patellar fracture internal fixation device, described fixator include upper end fixing device, fixing lower, pressurization dress
Put；Described upper end fixing device connects fixing lower by pressue device；Described upper end fixing device includes upper end
Fixed plate, upper end fixed claw, upper end raised plate；Described upper end fixed claw is connected to the side of upper end fixed plate, and upper end is fixed
Pawl is at least one；The outer surface of the upper end fixed plate is provided with upper end raised plate；Under described fixing lower includes
Hold fixed plate, lower end fixed claw, lower end raised plate；Described lower end fixed claw is connected to the side of lower end fixed plate, and lower end is solid
Pawl is determined at least one；The outer surface of the lower end fixed plate is provided with lower end raised plate；The pressue device is by pressurization screw rod
Formed with slide bar, or pressue device is made up of two pressurization screw rods；Described upper end raised plate is with lower end raised plate by adding
Screw rod and slide bar connection, or upper end raised plate is pressed to be connected with lower end raised plate by two pressurization screw rods；Described upper end
Fixed plate and lower end fixed plate are provided with locking nail, lock in nail and assemble lock screw.
As a kind of perferred technical scheme, the quantity of described upper end fixed claw is three.
As a kind of perferred technical scheme, the upper end fixed claw and upper end fixed plate are integrally formed.
As a kind of perferred technical scheme, the quantity of described lower end fixed claw is two.
As a kind of perferred technical scheme, described lower end fixed claw and lower end fixed plate are integrally formed.
As a kind of perferred technical scheme, described upper end fixing device, fixing lower, pressue device are using doctor
It is made of titanium or titanium alloy etc materials.
As a kind of perferred technical scheme, four locking nail, two locking nails are set in described upper end fixed plate
Hole communicates through upper end raised plate with the external world, and the pore size distribution of another two locking nail is on the both sides of upper end raised plate, upper end fixed plate
Four locking the T-shaped distributions of nail.
As a kind of perferred technical scheme, the locking nail in described lower end fixed plate is three, three locking nails
Hole is linearly distributed.
As a kind of perferred technical scheme, the inner surface of described upper end fixed plate and lower end fixed plate is arc knot
The outer surface plane structure type of structure, upper end fixed plate and lower end fixed plate.
As a kind of perferred technical scheme, described upper end fixed claw and lower end fixed claw are bow-shaped structural shape
Formula.
The utility model advantage is：
1st, a kind of patellar fracture internal fixation device of the present utility model is applied to the especially comminuted kneecap of all kinds of patellar fractures
Fracture internal fixaiion uses when performing the operation.The internal fixing device for patellar fracture fixes fracture by upper end fixed claw and lower end fixed claw
After block, sclerite pressurization can be gathered, fixing device middle part is also distributed with more by tightening middle pressurization screw rod
Individual locking nail, according to fracture site and it can need to fix broken bone piece using screw, so as to reach good fixed fracture effect
Fruit.Patient can be allowed early stage to carry out functional training, function of joint is obtained good recovery；
2nd, upper end fixing device can be adjusted by the screw rod that pressurizes, and the broken bone piece for being advantageous to comminuted patellar is consolidated
It is fixed；It is applied widely, it can apply on different size of kneecap；Upper end fixed claw can be adjusted as needed and lower end is fixed
The position of pawl, it is ensured that upper end fixed claw and lower end fixed claw closely can be attached on kneecap, true to kneecap environmental protection polymerization effect
Cut；
3rd, three upper end fixed claws in the fixed plate of upper end can fix the upper pole bone piece of kneecap, under two of lower end fixed plate
End fixed claw can fix the lower pole bone piece of kneecap, be shifted again after preventing the reduction of the fracture；
4th, pressurization screw rod is provided with pressue device, pressurization screw rod is the structure type of screw thread, on the one hand progressive can be pressurizeed,
Be advantageous to broken bone engagement, can preferably promote broken knitting to grow；On the other hand, the intensity of pressure is good, avoids the occurrence of upper end and fixes
Pawl and the displacement of lower end fixed claw, come off, cause to fix failure；
5th, be made of medical titanium or titanium alloy etc materials so that upper end fixed claw and lower end fixed claw can bending,
It is cheap and use should the cost of material is low；
6th, the utility model is simple in construction, reasonable in design, easy to operate in art, can effectively fix broken bone piece, make patient
Effective functional training just can be carried out compared with early stage, and avoids and caused during feature exercise the displacement again of fracture, is occurred
Different degrees of lower limb function is disabled；
7th, it is adjusted in pressue device using two pressurization screw rods, on the one hand provides reliable plus-pressure, fix tightly
Lean on；Another side can carry out pressurization regulation to both sides, and can be finely adjusted, and advantageously engage, can preferably promote in broken bone
Broken knitting growth；
8th, patellar fracture is one of common fracture of knee, with the aggravation of social population's aging and the hair of communications and transportation
Exhibition, the incidence of patellar fracture substantially increase, the hundreds thousand of examples of patellar fracture operation that China implements every year, therefore with wide
Potential applicability in clinical practice.In addition, bone fracture internal fixing device price is higher, it may have good economic benefit.
Brief description of the drawings
Accompanying drawing 1 is a kind of patellar fracture internal fixation device structural representation of the present utility model.
Accompanying drawing 2 is a kind of each part mark structure schematic diagram of patellar fracture internal fixation device.
Accompanying drawing 3 is another patellar fracture internal fixation device structural representation of the present utility model.
Embodiment
Embodiment provided by the utility model is elaborated below in conjunction with the accompanying drawings.
The reference and part being related in accompanying drawing are as follows：
1. the upper end fixed plate of upper end fixing device 11.
12. the upper end raised plate of upper end fixed claw 13.
2. the lower end fixed plate of fixing lower 21.
22. the lower end raised plate of lower end fixed claw 23.
The screw rod 3. pressue device 31. pressurizes
32. slide bar 4. locks nail
Embodiment 1
Referring to Fig.1 and 2, Fig. 1 is a kind of patellar fracture internal fixation device structural representation of the present utility model.Fig. 2 is
A kind of each part mark structure schematic diagram of patellar fracture internal fixation device, described fixator include upper end fixing device 1, lower end
Fixing device 2, pressue device 3；Described upper end fixing device 1 connects fixing lower 2 by pressue device 3.
Described upper end fixing device 1 includes upper end fixed plate 11, upper end fixed claw 12, upper end raised plate 13；Described
Upper end fixed claw 12 is connected to the side of upper end fixed plate 11, and upper end fixed claw 12 is at least one, preferably upper end fixed claw
12 quantity is three；The upper end fixed claw 12 and upper end fixed plate 11 are integrally formed；The upper end fixed plate 11
Outer surface is provided with upper end raised plate 13.
Described fixing lower 2 includes lower end fixed plate 21, lower end fixed claw 22, lower end raised plate 23；Described
Lower end fixed claw 22 is connected to the side of lower end fixed plate 21, and lower end fixed claw 22 is at least one, preferably lower end fixed claw
22 quantity is two；Described lower end fixed claw 22 and lower end fixed plate 21 are integrally formed；The lower end fixed plate 21
Outer surface be provided with lower end raised plate 23.
The pressue device 3 is made up of pressurization screw rod 31 and slide bar 32；Described upper end raised plate 13 and lower end raised plate
23 by pressurizeing screw rod 31 and slide bar 32 connects；Described upper end fixed plate 11 and lower end fixed plate 21 are provided with locking nail 4,
Lock screw is assembled in locking nail 4, locking nail 4 is the structure type of counterbore, and four are set preferably in upper end fixed plate 11
Nail 4 is locked, two locking nail 4 communicate through upper end raised plate 13 with the external world, and it is convex that another two locking nail 4 is distributed in upper end
The both sides of plate 13 are played, four locking 4 T-shaped distributions of nail in upper end fixed plate 11；It is preferred that the locking in lower end fixed plate 21
Nail 4 is three, and three locking nail 4 are linearly distributed；Described upper end fixed plate 11 and the inner surface of lower end fixed plate 21
For arcuate structure, the outer surface plane structure type of upper end fixed plate 11 and lower end fixed plate 21；Described upper end fixed claw 12
And lower end fixed claw 22 is bow-shaped structural form.
It should be noted that：
Described upper end fixed plate 11, upper end fixed claw 12 and upper end raised plate 13 forms upper end fixing device 1, described
Lower end fixed plate 21, lower end fixed claw 22 and lower end raised plate 23 form fixing lower 2, upper end fixing device 1 is logical
Over pressurizeed screw rod 31 can be adjusted, and this mainly has the function that following several respects：
1. doctor can be adjusted between upper end fixing device 1 and fixing lower 2 with the actual conditions of broken bone piece in art
Relative position, be advantageous to the fixation of the broken bone piece of comminuted patellar, and conventionally employed fixing device is integral type structure,
It can not be adjusted according to the actual conditions of broken bone piece, easily produce the displacement and articular surface out-of-flatness of broken bone piece, and use this
The fixing device of utility model, it can ensure that articular surface is smooth, broken bone piece will not shift；
2. it is applied widely, it can apply on different size of kneecap, and conventionally employed fixing device is integral type
Structure, size dimension are fixed, and model selection face is narrow, and accurate suitable dimension should be selected to different size of kneecap, and this is to manufacture
Business and use are made troubles；
3. pair comminuted kneecap encircles that polymerization effect is good, upper end fixing device 1 and the relative position of fixing lower 2
Putting to be adjusted, i.e., can adjust the position of upper end fixed claw 12 and lower end fixed claw 22 as needed, it is ensured that upper end fixed claw
12 and lower end fixed claw 22 closely can be attached on kneecap, it is definite to kneecap environmental protection polymerization effect.And conventionally employed fixation
Device, it is insecure when being fixed with, it may appear that it is hollow, influence fixed effect.
Described upper end fixed plate 11 and the inner surface of lower end fixed plate 21 are arcuate structure, are set according to kneecap anatomical shape
Meter forms, and the outer surface of this and kneecap fits；Upper end fixed plate 11 and the equally distributed multiple locking nails of lower end fixed plate 21
Hole 4, it according to fracture site and can need to fix using screw, meet the demand of different parts fracture fixation, can also reach
Good fixed fracture effect, locking nail 4 (set four locks using the distribution form of the present embodiment i.e. in upper end fixed plate 11
Determine nail 4, two locking nail 4 communicate through upper end raised plate 13 with the external world, and it is convex that another two locking nail 4 is distributed in upper end
The both sides of plate 13 are played, four locking 4 T-shaped distributions of nail in upper end fixed plate 11；It is preferred that the locking in lower end fixed plate 21
Nail 4 is three, and three locking nail 4 are linearly distributed) fixed effect is optimal.
Three upper end fixed claws 12 in upper end fixed plate 11 can fix the upper pole bone piece of kneecap, and the two of lower end fixed plate 21
Individual lower end fixed claw 22 can fix the lower pole bone piece of kneecap, be shifted again after preventing the reduction of the fracture.
Described pressue device 3 includes pressurization screw rod 31 and slide bar 32, under use state, when upper end fixed claw 12 and under
After end fixed claw 22 fixes sclerite, by tightening pressurization screw rod 31, sclerite pressurization is gathered, pressurization screw rod 31 is screw thread
Structure type, on the one hand progressive can pressurize, be advantageous to the engagement of broken bone, can preferably promote broken knitting to grow；The opposing party
Face, the intensity of pressure is good, avoids the occurrence of upper end fixed claw 12 and lower end fixed claw 22 shifts, come off, cause to fix failure.
Described upper end fixing device 1, fixing lower 2, pressue device 3 use medical titanium or titanium alloy etc materials system
Into so that upper end fixed claw 12 and lower end fixed claw 22 can bending, and using should the cost of material is low, it is cheap, and pass
The fixing device of system is high using memorial alloy price, causes manufacturing cost and use cost to improve.
Embodiment 2
Fig. 3 is refer to, Fig. 3 is another patellar fracture internal fixation device structural representation of the present utility model.The present embodiment
Substantially the same manner as Example 1, its difference is, without slide bar 32 in pressue device 3 in the present embodiment, is pressurizeed after its slide bar 32
Screw rod 31 is replaced, i.e., the pressue device 3 in the present embodiment is made up of two pressurization screw rods 31, is added in pressue device 3 using two
Pressure screw rod 31 is adjusted, and on the one hand provides reliable plus-pressure, fixed；Another side can carry out pressurization tune to both sides
Section, and can be finely adjusted, advantageously engaged in broken bone, can preferably promote broken knitting to grow.
A kind of patellar fracture internal fixation device of the present utility model has following technique effect:
A kind of patellar fracture internal fixation device of the present utility model is applied to the especially comminuted kneecap bone of all kinds of patellar fractures
Used when rolling over internal fixation operation.The internal fixing device for patellar fracture fixes bone by upper end fixed claw 12 and lower end fixed claw 22
After folded block, sclerite pressurization can be gathered, fixing device middle part is also distributed by tightening middle pressurization screw rod 31
There are multiple locking nail 4, according to fracture site and can need to fix broken bone piece using screw, so as to reach good fixation bone
Roll over effect.Patient can be allowed early stage to carry out functional training, function of joint is obtained good recovery；Upper end fixing device 1 passes through
Pressurization screw rod 31 can be adjusted, and be advantageous to the fixation of the broken bone piece of comminuted patellar；It is applied widely, it can apply not
With on the kneecap of size；The position of upper end fixed claw 12 and lower end fixed claw 22 can be adjusted as needed, it is ensured that upper end is fixed
Pawl 12 and lower end fixed claw 22 closely can be attached on kneecap, definite to kneecap environmental protection polymerization effect；In upper end fixed plate 11
Three upper end fixed claws 12 can fix the upper pole bone piece of kneecap, two lower end fixed claws 22 of lower end fixed plate 21 can fix kneecap
The lower pole bone piece of bone, is shifted again after preventing the reduction of the fracture；Pressurization screw rod 31 is provided with pressue device 3, pressurization screw rod 31 is screw thread
Structure type, on the one hand progressive can pressurize, be advantageous to the engagement of broken bone, can preferably promote broken knitting to grow；The opposing party
Face, the intensity of pressure is good, avoids the occurrence of upper end fixed claw 12 and lower end fixed claw 22 shifts, come off, cause to fix failure；Using
Medical titanium or titanium alloy etc materials are made so that upper end fixed claw 12 and lower end fixed claw 22 can bending, and use the material
Expect that cost is low, it is cheap；The utility model is simple in construction, reasonable in design, easy to operate in art, can effectively fix broken bone
Block, patient relatively early stage just can be carried out effective functional training, and avoid and fracture is caused when carrying out feature exercise again
Displacement, it is disabled to there is different degrees of lower limb function；It is adjusted in pressue device 3 using two pressurization screw rods 31, on the one hand
Reliable plus-pressure is provided, it is fixed；Another side can carry out pressurization regulation to both sides, and can be finely adjusted, more added with
Engaged beneficial to broken bone, can preferably promote broken knitting to grow；Patellar fracture is one of common fracture of knee, with social man
The aggravation of mouth aging and the development of communications and transportation, the incidence of patellar fracture substantially increase, the kneecap bone that China implements every year
The hundreds thousand of examples of folding operation, therefore there is wide potential applicability in clinical practice.In addition, bone fracture internal fixing device price is higher, it may have
Good economic benefit.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
Art personnel, on the premise of the utility model method is not departed from, some improvement and supplement can also be made, these are improved and supplement
Also it should be regarded as the scope of protection of the utility model.
Claims (10)
1. a kind of patellar fracture internal fixation device, it is characterised in that described fixator includes upper end fixing device, dress is fixed in lower end
Put, pressue device；Described upper end fixing device connects fixing lower by pressue device；Described upper end fixing device
Including upper end fixed plate, upper end fixed claw, upper end raised plate；Described upper end fixed claw is connected to the side of upper end fixed plate,
Upper end fixed claw is at least one；The outer surface of the upper end fixed plate is provided with upper end raised plate；Dress is fixed in described lower end
Put including lower end fixed plate, lower end fixed claw, lower end raised plate；Described lower end fixed claw is connected to the one of lower end fixed plate
Side, lower end fixed claw are at least one；The outer surface of the lower end fixed plate is provided with lower end raised plate；The pressue device by
Pressurization screw rod and slide bar are formed, or pressue device is made up of two pressurization screw rods；Described upper end raised plate is raised with lower end
Plate is connected by screw rod and the slide bar connection of pressurizeing, or upper end raised plate with lower end raised plate by two pressurization screw rods；Institute
The upper end fixed plate and lower end fixed plate stated are provided with locking nail, lock in nail and assemble lock screw.
2. patellar fracture internal fixation device according to claim 1, it is characterised in that the quantity of described upper end fixed claw is
Three.
3. patellar fracture internal fixation device according to claim 2, it is characterised in that the upper end fixed claw is fixed with upper end
Plate is integrally formed.
4. patellar fracture internal fixation device according to claim 1, it is characterised in that the quantity of described lower end fixed claw is
Two.
5. patellar fracture internal fixation device according to claim 4, it is characterised in that described lower end fixed claw is consolidated with lower end
Fixed board is integrally formed.
6. according to any described patellar fracture internal fixation device in claim 1-5, it is characterised in that dress is fixed in described upper end
Put, fixing lower, pressue device are made of medical titanium or titanium alloy etc materials.
7. patellar fracture internal fixation device according to claim 1, it is characterised in that set four in described upper end fixed plate
Individual locking nail, two locking nail communicate through upper end raised plate with the external world, and the pore size distribution of another two locking nail is raised in upper end
The both sides of plate, four locking T-shaped distributions of nail in the fixed plate of upper end.
8. patellar fracture internal fixation device according to claim 1, it is characterised in that the locking in described lower end fixed plate
Nail is three, and three locking nail are linearly distributed.
9. patellar fracture internal fixation device according to claim 1, it is characterised in that described upper end fixed plate and lower end are consolidated
The inner surface of fixed board is the outer surface plane structure type of arcuate structure, upper end fixed plate and lower end fixed plate.
10. patellar fracture internal fixation device according to claim 8 or claim 9, it is characterised in that described upper end fixed claw and
Lower end fixed claw is bow-shaped structural form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720182104.8U CN207202926U (en) | 2017-02-28 | 2017-02-28 | Patellar fracture internal fixation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720182104.8U CN207202926U (en) | 2017-02-28 | 2017-02-28 | Patellar fracture internal fixation device |
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| Publication Number | Publication Date |
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| CN207202926U true CN207202926U (en) | 2018-04-10 |
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ID=61809312
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| CN201720182104.8U Expired - Fee Related CN207202926U (en) | 2017-02-28 | 2017-02-28 | Patellar fracture internal fixation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106901821A (en) * | 2017-02-28 | 2017-06-30 | 中国人民解放军第二军医大学第二附属医院 | A kind of patellar fracture internal fixation device |
-
2017
- 2017-02-28 CN CN201720182104.8U patent/CN207202926U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106901821A (en) * | 2017-02-28 | 2017-06-30 | 中国人民解放军第二军医大学第二附属医院 | A kind of patellar fracture internal fixation device |
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Granted publication date: 20180410 Termination date: 20190228 |