CN106388980B - A kind of femoral head inner supporting device - Google Patents
A kind of femoral head inner supporting device Download PDFInfo
- Publication number
- CN106388980B CN106388980B CN201611043772.9A CN201611043772A CN106388980B CN 106388980 B CN106388980 B CN 106388980B CN 201611043772 A CN201611043772 A CN 201611043772A CN 106388980 B CN106388980 B CN 106388980B
- Authority
- CN
- China
- Prior art keywords
- femoral head
- support body
- supporting device
- inner supporting
- head inner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/3611—Heads or epiphyseal parts of femur
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00011—Metals or alloys
- A61F2310/00035—Other metals or alloys
- A61F2310/00041—Magnesium or Mg-based alloys
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
- A61F2310/00796—Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
Abstract
The invention discloses a kind of femoral head inner supporting device, including the cylindrical support body with network structure, the front end of the support body is provided with the hemispherical supporting part with network structure, and the end of the support body is provided with the fixation kit being fixed on the support body on femoral head.Femoral head inner supporting device provided by the invention, the support body of the present invention is implanted in femoral head, the supporting part of support body front end is supported to femoral head, it is fixed on using the fixation kit of the present invention on the bone outside femoral head, you can the support body of the femoral head inner supporting device of the present invention and supporting part are fixed on the position that femoral head is implanted into.After the inner supporting device of the present invention fixes, situation about shifting will not occur over time, ensure that the support lasting to femoral head, ensure that the mechanical property of femoral head, prevent femoral head from collapsing again, ensure that the surgical procedure of patient is smoothed out.
Description
Technical field
The present invention relates to medicine equipment, is filled more particularly to the support for being used for supporting femoral head in a kind of implanted unit bone
Put.
Background technology
The bone at caput femoris necrosis is supported at present, the support meanss such as Patent No. for preventing bone from collapsing
201520151774.4, applying date 2015.03.17, entitled " a kind of mesh-supported device for being used to treat caput femoris necrosis "
Invention disclosed in eyelid retractor, including head, body portion and afterbody three parts, and head, body portion and afterbody are connected as a single entity and interior
Portion's engraved structure, with body portion axis angle into obtuse angle, head is curved hemisphere on head, and body portion is cylindric, is had on body portion wall
Multiple hexagon hollow out through holes, and supported on inwall with hexagonal network, after eyelid retractor implanted femur head's neck, head half
Spheroid is placed upwards, can be achieved to effective support of the femoral head collapsed.But the eyelid retractor of this structure is placed directly into need
The position to be supported, it is impossible to it is fixed, easily occur the phenomenon shifted over time, can not if eyelid retractor shifts
Femoral head is supported, femoral head also occurs that the phenomenon collapsed.
The content of the invention
The present invention solves the technical problem of a kind of femoral head inner supporting device is provided, support meanss of the invention are planted
After entering into femoral head, it can be fixed to outside femoral head, avoid the phenomenon of support meanss displacement, can realize to femoral head
Lasting is supported, and effectively prevents collapse of femoral head.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of femoral head inner supporting device, including tool
There is the cylindrical support body of network structure, the front end of the support body is provided with the hemispherical of network structure
Supporting part, the fixation kit being fixed on the support body on femoral head of the end setting of the support body.
Further, the fixation kit includes being provided with along the axis side of support body by the side of support body tip
The extension on the outside of femoral head and the fixed part being fixedly connected with the end of the extension are extended to edge.
Further, the extension includes the extension board connected with the support body tip and is slidedly assemblied in institute
The expansion plate on extension board is stated, locking member is provided between the extension board and the expansion plate.
Further, the fixed part includes the fixed plate of setting connected with the expansion plate end and at an angle,
The lateral surface of the fixed plate has the radian being bonded with the femoral head periphery, and being provided with fixing screws in the fixed plate wears
The fixing hole crossed.
Further, the femoral head inner supporting device also includes strutting group by what the hemispheric supporting part strutted
Part.
Further, described strutting assembly includes being installed in the support body lower end and axis and the support body
The guide plate that overlaps of axis, its axis is provided with pilot hole on the guide plate, in the pilot hole on the guide plate
Outside be provided with intercommunicating pore, the mobile pull bar for being inserted with hollow structure in the pilot hole, the front end of the pull bar with it is described
It is fixedly connected at the top of hemispheric supporting part, the rear end of the pull bar is freely set, and the rear end of the pull bar is installed with and institute
State the drive nut that the rear end face block of guide plate coordinates.
Further, the material of the femoral head inner supporting device is located at the magnesium conjunction using by magnesium alloy substrate and painting
The strontium-doped hydroxyapatite coating layer of auri external surface is formed；The magnesium alloy substrate is made up of component Mg, Ca, Sr and Zn, respectively
The weight percent content of component is respectively：Ca 0.25%, Sr 0.35%, Zn 2.65%, the Mg of surplus；It is described to mix strontium hydroxyl
The thickness that is coated with of base apatite coating is 0.1mm~0.3mm, and Sr weight percent content is in strontium-doped hydroxyapatite coating layer
8%~12%.
Further, the thickness that is coated with of the strontium-doped hydroxyapatite coating layer is 0.25mm.
Further, Sr weight percent content is 10% in the strontium-doped hydroxyapatite coating layer.
The beneficial effects of the invention are as follows：Femoral head inner supporting device provided by the invention, the support body of the present invention is planted
Enter into femoral head, the supporting part of support body front end is supported to femoral head, is fixed on using the fixation kit of the present invention
On bone outside femoral head, you can the support body of the femoral head inner supporting device of the present invention and supporting part are fixed on into femur
The position that head is implanted into.After the inner supporting device of the present invention fixes, situation about shifting will not occur over time,
The support lasting to femoral head is ensure that, the mechanical property of femoral head is ensure that, prevents femoral head from collapsing again, ensure that patient
Surgical procedure be smoothed out.
Further extension is stretching structure, can be applicable the marrow channel of different depth.
The strutting assembly further set, larger marrow channel need not be bored on femoral head when being implanted into early stage,
Larger Area of bearing equally can be obtained after implantation, the mechanical property of femoral head will not be damaged, while is increased to femur
The Area of bearing of head, further prevents collapsing for femoral head.
Further the material of the femoral head inner supporting device of the present invention uses magnesium alloy base of the component for Mg, Ca, Sr and Zn
Body, there is suitable mechanical property by rational composition design, and processing preparation technology, obtained femoral head inner supporting device
Can be with excellent decay resistance., can be further by being coated with strontium-doped hydroxyapatite coating layer in magnesium alloy substrate outer surface
The decay resistance of material is improved, while significantly improves the biocompatibility of material.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of femoral head inner supporting device of the present invention：
Fig. 2 is the stereogram of the embodiment of femoral head inner supporting device of the present invention；
Fig. 3 be femoral head inner supporting device of the present invention another embodiment in strutting assembly structural representation.
Embodiment
The present invention embodiment description in, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ",
The orientation of instruction such as " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " or
Position relationship is based on orientation shown in the drawings or position relationship, is for only for ease of the description present invention and simplifies description, without
It is instruction or implies that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that referring to
Show or imply relative importance or imply the quantity of the technical characteristic indicated by indicating.Thus, " first ", " second " are defined
Deng feature can express or implicitly include one or more this feature.In the description of the invention, unless otherwise
Illustrate, the implication of " multiple " refers to two or more.Term "and/or" used in this specification includes one or more
The arbitrary and all combination of related Listed Items.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly.For example, it may be being fixedly connected or being detachably connected, or it is integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
For the ease of understanding the present invention, below in conjunction with the accompanying drawings and specific embodiment, the present invention will be described in more detail.
The preferred embodiment of the present invention is given in accompanying drawing.But the present invention can realize in many different forms, and it is unlimited
In the embodiment described by this specification.On the contrary, the purpose for providing these embodiments makes to the disclosure
Understand more thorough and comprehensive.
As shown in figure 1, the femoral head inner supporting device of the present embodiment includes the cylindrical support sheet with network structure
Body 1, the front end of support body 1 are provided with the hemispherical supporting part 2 with network structure, and the end of support body 1 is set
Having will support body 1 to be fixed on the fixation kit 3 outside femoral head.
It is further preferred that fixation kit 3 includes the axle that body 1 is supported by the edge that the side of the end of support body 1 is set
Line direction edge extends the extension 31 on the outside of femoral head and is fixedly connected with the end of extension 31 and is used to be fixed on femur
Fixed part 32 on head.
It is further preferred that in order to be applicable the marrow channel of different depth, the adjustable length of above-mentioned extension 31, it is wrapped
Include and the connected extension board 311 in support body 1 end and the expansion plate 312 being slidedly assemblied on extension board 311, extension board
Locking member is provided between 311 and expansion plate 312 to be locked, locking member can be locked using screw.First adjusted during use
The length of whole good extension, so that above-mentioned fixed part 32 is located at outside femoral head, is then locked by screw.
In other examples, above-mentioned extension can also use the structure of the expansion plate of prior art.
It is further preferred that fixed part 32 includes being connected with the end of expansion plate 312 and the fixed plate of setting at an angle
321, the lateral surface of fixed plate 321 has the radian being bonded with femoral head periphery, and being provided with fixing screws in fixed plate 321 passes through
Fixing hole 322.
When in use, support body 1 and supporting part 2 are implanted in femoral head for the femoral head inner supporting device of the present embodiment
In chamber, extension 31 is stretched out along the inwall of marrow channel, the fixed plate 321 of fixed part 32 is fitted in the outer of femoral head
Side face, fixing screws are screwed on bone tissue through fixing hole 322 and fixed plate 321 are fixed on femoral head, thus will support
Body 1 and supporting part 2 are fixedly supported on the interior intracavitary of femoral head.Support body 1 and supporting part 2 over time, and will not be sent out
Raw movement, ensure persistently effective supporting femoral head.
During supporting femoral head, it is desirable to larger Area of bearing is obtained, if but prior art is hemispheric using increasing
The area of supporting part, it can so cause to need to drill out the marrow channel being relatively large in diameter on femoral head, can so cause to femur
The bone tissue of head produces larger destruction, the mechanical property of serious influence femoral head.Therefore the femoral head inner support of the present invention
Device is further provided with the strutting assembly 4 for strutting hemispheric supporting part 2.
The femoral head inner supporting device of the present invention only needs to drill out before implantation to be consistent with the support outer peripheral face size of body 1
The marrow channel of conjunction, after the implantation, strutting assembly 4 is opened, hemispheric supporting part 2 is strutted, to increase its Area of bearing.This
The strutting assembly of invention can make the present invention obtain larger Area of bearing, and and can ensures that the mechanical strength of femoral head will not be destroyed
And performance.
It is further preferred that as depicted in figs. 1 and 2, strutting assembly 4 include being installed in the support lower end of body 1 and axis with
The guide plate 41 for supporting the axis of body 1 to overlap, its axis is provided with pilot hole on guide plate 41, in guiding on guide plate 41
Intercommunicating pore 411 is provided with the outside of hole, the pull bar 42 for being inserted with hollow structure, the front end of the pull bar 42 and half are moved in pilot hole
The top of spherical supporting part 2 is fixedly connected, and rear end is freely set, and screw thread is provided with the outer peripheral face of the latter half of pull bar 42
43, pull bar 42 is located at the rotation of the rear end of guide plate 41 and is provided with the drive nut 44 coordinated with the rear end face block of guide plate 41.
When being strutted to supporting part 2, turn drive nut 44, to drive pull bar 42 to be moved to the outside of support body 1
Dynamic, the front end of pull bar 42 pulls supporting part 2, is radially expanded supporting part 2, to increase the area of the radial support of supporting part 2.
In other examples, the strutting assembly can also be umbrella support structure, and retracted state is in implantation,
, it is necessary to deploy when being expanded to supporting part after implantation, as shown in figure 3, the strutting assembly includes adjustment bar 51, adjustment bar 51
Upper end is provided with screw thread 52, and the threaded portion of adjustment bar 51 is installed with thread bush 53, and the bar portion turning set of adjustment bar 51, which is provided with, to be rotated
Set 54, the block on the axis direction of adjustment bar 51 of turning set 54 are set, and turning set 54 is fixedly installed under support body 1
End.Be hinged and be provided with along at least two uniform support claws 55 of its circumferential direction on the outer peripheral face of turning set 54, support claw 55 it is another
End is freely set, and is hinged between the outer peripheral face of thread bush 53 and the middle part of support claw 55 and is provided with strut 56.To supporting part 2
When being strutted, turn adjustment bar 51, the adjustment screw drive thread bush 53 of bar 51 moves up and down, to strut or withdraw support claw.
It is further preferred that the material of above-mentioned femoral head inner supporting device is located at this using by magnesium alloy substrate and painting
The strontium-doped hydroxyapatite coating layer of magnesium alloy substrate outer surface is formed；Magnesium alloy substrate is made up of component Mg, Ca, Sr and Zn, respectively
The weight percent content of component is respectively：Ca 0.25%, Sr 0.35%, Zn 2.65%, the Mg of surplus；Mix strontium hydroxyl phosphorus
The thickness that is coated with of lime stone coating is 0.1mm~0.3mm, and Sr weight percent content is 8% in strontium-doped hydroxyapatite coating layer
~12%.
It is further preferred that the thickness that is coated with of above-mentioned strontium-doped hydroxyapatite coating layer is 0.25mm.
It is further preferred that Sr weight percent content is 10% in above-mentioned strontium-doped hydroxyapatite coating layer.
The material that the femoral head inner supporting device of the present invention uses, work is prepared by rational composition design, and processing
Skill, there is suitable mechanical property and excellent decay resistance.It has been investigated that mechanical property of the alloying element to magnesium alloy
And decay resistance has a great influence.Appropriate Zn elements can improve the mechanical property of magnesium alloy, and micro Ca elements can show
The microscopic structure of Refining Mg Alloy is write, improves the mechanical property of magnesium alloy, increases the corrosion resistance of magnesium alloy.Appropriate strontium member
Activity plain then that Gegenbaur's cell can be improved, accelerate bone tissue healing.Strontium hydroxyl is mixed by being coated with magnesium alloy substrate outer surface
Apatite coating, the decay resistance of material can be further improved, while significantly improve the biocompatibility of material.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure transformation that bright specification and accompanying drawing content are made, or other related technical areas are directly or indirectly used in,
It is included within the scope of the present invention.
Claims (5)
1. a kind of femoral head inner supporting device, including the cylindrical support body with network structure, the support body
Front end is provided with the hemispherical supporting part with network structure, it is characterised in that the end of the support body is provided with
The fixation kit support body being fixed on femoral head, the femoral head inner supporting device are also included the hemispherical
The strutting assembly that struts of supporting part, described strutting assembly includes being installed in the support body lower end and axis and the branch
The guide plate that the axis of body overlaps is supportted, its axis is provided with pilot hole on the guide plate, in described on the guide plate
Intercommunicating pore is provided with the outside of pilot hole, the pull bar for being inserted with hollow structure, the front end of the pull bar are moved in the pilot hole
It is fixedly connected with the top of the hemispheric supporting part, the rear end of the pull bar is freely set, and the rear end rotation of the pull bar is set
There is the drive nut coordinated with the rear end face block of the guide plate.
2. femoral head inner supporting device according to claim 1, it is characterised in that the fixation kit is included by support originally
The axis direction for the edge support body that the side of body end is set along the extension extended on the outside of femoral head and with the extension
The fixed part that the end in portion is fixedly connected.
3. femoral head inner supporting device according to claim 2, it is characterised in that the extension includes and the support
The connected extension board of body tip and the expansion plate being slidedly assemblied on the extension board, the extension board and the expansion plate
Between be provided with locking member, the fixed part includes being connected with the expansion plate end and the fixed plate of setting at an angle,
The lateral surface of the fixed plate has the radian being bonded with the femoral head periphery, and being provided with fixing screws in the fixed plate wears
The fixing hole crossed, the material of the femoral head inner supporting device are located at the magnesium alloy substrate using by magnesium alloy substrate and painting
The strontium-doped hydroxyapatite coating layer of outer surface is formed；The magnesium alloy substrate is made up of component Mg, Ca, Sr and Zn, each component
Weight percent content is respectively：Ca 0.25%, Sr 0.35%, Zn 2.65%, the Mg of surplus；It is described to mix strontium hydroxy-apatite
The thickness that is coated with of stone coating is 0.1mm~0.3mm, in strontium-doped hydroxyapatite coating layer Sr weight percent content for 8%~
12%.
4. femoral head inner supporting device according to claim 3, it is characterised in that the strontium-doped hydroxyapatite coating layer
It is 0.25mm to be coated with thickness.
5. femoral head inner supporting device according to claim 4, it is characterised in that in the strontium-doped hydroxyapatite coating layer
Sr weight percent content is 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611043772.9A CN106388980B (en) | 2016-11-24 | 2016-11-24 | A kind of femoral head inner supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611043772.9A CN106388980B (en) | 2016-11-24 | 2016-11-24 | A kind of femoral head inner supporting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106388980A CN106388980A (en) | 2017-02-15 |
| CN106388980B true CN106388980B (en) | 2018-04-06 |
Family
ID=58081871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611043772.9A Active CN106388980B (en) | 2016-11-24 | 2016-11-24 | A kind of femoral head inner supporting device |
Country Status (1)
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| CN (1) | CN106388980B (en) |
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| CN202146350U (en) * | 2011-06-16 | 2012-02-22 | 北京爱康宜诚医疗器材股份有限公司 | Expansion-fixed femoral head internal support body |
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| CN104688390A (en) * | 2015-03-17 | 2015-06-10 | 苏州瑞华医院有限公司 | Net-shaped supporting device |
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| CN100594853C (en) * | 2008-05-16 | 2010-03-24 | 北京天新福医疗器材有限公司 | Metal bone support device for femoral head putrescence |
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| US9433451B2 (en) * | 2013-12-09 | 2016-09-06 | Acumed Llc | Hip fixation system with a compliant fixation element |
| CN206534736U (en) * | 2016-11-24 | 2017-10-03 | 河南理工大学 | A kind of femoral head inner supporting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1420747A (en) * | 2000-04-04 | 2003-05-28 | 库尔斯恩蒂斯股份公司 | Device for rotational stabilization of bone segments |
| CN2490992Y (en) * | 2001-06-29 | 2002-05-15 | 段德生 | External handle type artificial thigh-bone |
| CN201840550U (en) * | 2010-08-06 | 2011-05-25 | 刘德俊 | Inner reticular support used for femoral head necrosis |
| CN202146350U (en) * | 2011-06-16 | 2012-02-22 | 北京爱康宜诚医疗器材股份有限公司 | Expansion-fixed femoral head internal support body |
| CN102824208A (en) * | 2011-06-16 | 2012-12-19 | 王坤正 | Nickel-titanium shape memory alloy umbrella-titanium mesh femoral head internal supporting device |
| CN104688390A (en) * | 2015-03-17 | 2015-06-10 | 苏州瑞华医院有限公司 | Net-shaped supporting device |
| CN104814814A (en) * | 2015-03-17 | 2015-08-05 | 苏州瑞华医院有限公司 | Supporting device for treatment of femoral head necrosis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106388980A (en) | 2017-02-15 |
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