CN108056846A - A kind of tibial base, anatomical form knee-joint prosthesis and mold - Google Patents

A kind of tibial base, anatomical form knee-joint prosthesis and mold Download PDF

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Publication number
CN108056846A
CN108056846A CN201810010421.0A CN201810010421A CN108056846A CN 108056846 A CN108056846 A CN 108056846A CN 201810010421 A CN201810010421 A CN 201810010421A CN 108056846 A CN108056846 A CN 108056846A
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China
Prior art keywords
point
tibial
camber line
point portion
line part
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Pending
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CN201810010421.0A
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Chinese (zh)
Inventor
石波
石宇洲
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Individual
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Individual
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Priority to CN201810010421.0A priority Critical patent/CN108056846A/en
Publication of CN108056846A publication Critical patent/CN108056846A/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/38Joints for elbows or knees
    • A61F2/3836Special connection between upper and lower leg, e.g. constrained
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/38Joints for elbows or knees
    • A61F2/389Tibial components
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30621Features concerning the anatomical functioning or articulation of the prosthetic joint
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30667Features concerning an interaction with the environment or a particular use of the prosthesis
    • A61F2002/30688Means for allowing passage or sliding of tendons or ligaments
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/3094Designing or manufacturing processes
    • A61F2/30942Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • A61F2002/30957Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using a positive or a negative model, e.g. moulds

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

The invention discloses a kind of tibial bases, anatomical form knee-joint prosthesis and mold, wherein tibial base includes tibial tray, and the elongation bar extended downwardly along the lower surface of tibial tray, in the wherein one side for the leading edge center line for deviateing tibial tray, and there is the first point portion and second point portion along side positioned at the lower of leading edge, there is the first point portion of connection and second point portion and the first raised longitudinally upward camber line portion on the leading edge, there is the first point portion of connection and second point portion and laterally down the second camber line portion of surface middle part protrusion on the lower surface of the tibial tray, it is formed and is surrounded from the first camber line portion and the second camber line portion for profile and to the concave cambered surface breach structure in tibial tray inside on the leading edge.The present invention in tibial base by being provided with cambered surface breach structure, lateral ligament shin bone stop before can retaining, so as to retain ALL.

Description

A kind of tibial base, anatomical form knee-joint prosthesis and mold
Technical field
The invention belongs to manufactured products' technical fields in implantable bone joint, and in particular to a kind of tibial base, anatomical form Knee-joint prosthesis and mold.
Background technology
1879, French Segond doctor was based on Segond fracture and proposes a kind of hypothesis:Human knee joint is " precious there are one Expensive, wear-resisting, fibrous ligament ".Puzzlement of the hypothesis experience up to a century, until 2013, Belgian Univ Louvain Hospital Steven carries out 41 knee joints anatomical study, and the hypothesis ligament of Segond is found that in 40 (97%) knee joints, The tough band connection femur and preceding lateral tibial, outside, is defined as preceding lateral ligament (anterolateral before knee joint ligamentALL)。
As shown in Figure 1, PN:Nervus peroneus communis;PCL:Posterior cruciate ligament of knee;ACL:Anterior cruciate ligament;LM:Lateral meniscus;MM: Medial meniscus;MCL:Medial collateral ligament);LCL:Lateral collateral ligament;LFE:External epicondyle of femur;ALL femurs starting point is located at outside Ligamena collateralia (lateral collateral ligamentLCL) femoral insertion external epicondyle of femur (lateral femoral EpicondyleLFE) and close to it.
ALL shin bones stop is located at gerdy's tubercle (Gerdy tubercles) and the point midway of head of fibula leading edge, and anatomy is shown in ALL shin bones stop is there are shin bone apophysis, and we term it lateral ligament tubercle before shin bone (ALL tubercles).
The biomechanics Research of Kennedy MI (2015) is shown:ALL average maximum loads 175N (95% confidence interval, 139-211N), the rigidity of ALL is 20N/ millimeters (95%CI, 16-25N/ millimeters).In view of independent body's structure of ALL and dissection Degree is put, and ALL may move kneed axis to stablize has biomechanical significance with the rotational stabilization of shin bone.
Total knee replacement retains external epicondyle of femur at present, does not influence the femur starting point of ALL, still, Tibial osteotomy Lateral ligament shin bone stop osteotomy before instrument is gone with tibial prosthesis, does not retain lateral ligament tubercle (ALL tubercles) before shin bone, phase It is cut off when in ALL.
The content of the invention
It is an object of the invention to:For in existing tibial prosthesis when carrying out artificial knee replacement surgery, it is necessary to The problem of cutting off ALL provides a kind of tibial base, anatomical form knee-joint prosthesis and mold, lateral ligament shin before can retaining Bone stop, so as to retain ALL.
To achieve these goals, the technical solution adopted by the present invention is:
A kind of tibial base, the tibial base include tibial tray and are extended downwardly along the lower surface of tibial tray Elongation bar, deviate tibial tray leading edge center line wherein one side and positioned at leading edge it is lower along side have first Point portion and second point portion have the first point portion of connection and second point portion and the first raised longitudinally upward arc on the leading edge Line portion has the first point portion of connection and second point portion and laterally down surface middle part on the lower surface of the tibial tray Second camber line portion of protrusion forms on the leading edge and is surrounded from the first camber line portion and the second camber line portion by profile and to shin Concave cambered surface breach structure on the inside of bone pallet.
Preferably, lacked using the cross-section center by the first point portion and the tibial tray in second point portion as dot and cambered surface Quadrant area where mouth structure, is 34 ° -38 °, by second by the first point portion, the ray of dot and the angle of axis of ordinates Point portion, the ray of dot and the angle of axis of abscissas are 16-20 °.
Preferably, the first point portion and second point portion are connected and forms line part, the arc top in the second camber line portion and line part away from From the width b/10 that f1 is tibial tray, the arc top in the first camber line portion and the distance f2 of line part are f1+1mm.
Preferably, the intersection point of the arc vertex in the second camber line portion and the line part is located at the midpoint of line part, The intersection point of the arc vertex in the first camber line portion and the line part is located at the midpoint of line part.
Preferably, the intersection point of the arc vertex in the second camber line portion and the line part is located at the close vertical of line part First trisection point of coordinate;The arc vertex in the first camber line portion and the intersection point of the line part are located at line part Close to first trisection point of ordinate.
The present invention also provides a kind of anatomical form knee-joint prosthesis, including shin bone pad and femoral prosthesis and the shin Bone pedestal.
The present invention also provides a kind of molds of tibial base, and the mold is measured for incisura and boring positioning, described Mold includes positioning disk, and the positioning disk has the cross-sectional profiles structure identical with tibial tray, is provided on positioning disk Several location holes, which is characterized in that be provided on the positioning disk with the recess for projecting, longitudinally cutting out in the second camber line portion Structure.
Preferably, the mold further includes handle, and handle is connected to the side of positioning disk.
By adopting the above-described technical solution, the beneficial effects of the invention are as follows:
The present invention anatomical form knee-joint prosthesis, by being provided with cambered surface breach structure on tibial tray, can into During row artificial knee replacement surgery, lateral ligament shin bone stop before reservation, so as to retain preceding lateral ligament, i.e. ALL.
It, can simultaneously also by being provided with sunk structure corresponding with the cambered surface breach structure on the positioning disk of mold Retain ALL tubercles and carry out incisura, and can be when being drilled, lateral ligament shin bone stop before avoiding, the accurate of device to hole position is determined Position.
Description of the drawings
Fig. 1 is knee ligament distribution map.
Fig. 2 is the anatomical form articular prosthesis structure diagram of the present invention.
Fig. 3 is the tibial base structure diagram of the present invention.
Fig. 4 is the tibial base bottom view of the present invention.
Fig. 5 be Fig. 4 A to expansion view.
Fig. 6 is the tibial base bottom view of another embodiment of the invention.
Fig. 7 be Fig. 6 B to expansion view.
Fig. 8 is the mold structure diagram of the present invention.
Reference numeral:10- tibial bases, 11- tibial tray, 111- leading edges, 112- cambered surface breach structures, 113- first Camber line portion, the second camber lines of 114- portion, 12- elongation bars, 20- shin bones pad, 30- femoral prosthesis, 40- molds, 41- positioning disks, 42- Handle;
A1, a2 represent the first point portion and second point portion respectively;
B is the width of tibial tray;
F1 is the arc top in the second camber line portion and the distance of line part;
F2 is the arc top in the first camber line portion and the distance of line part.
Specific embodiment
With reference to Fig. 2-8, anatomical form knee-joint prosthesis of the invention includes tibial base 10, shin bone pad 20 and femoral prosthesis 30 three parts, the tibial base 10 include tibial tray 11 and the elongation extended downwardly along the lower surface of tibial tray 11 Bar 12, when carrying out artificial knee replacement surgery, it is necessary first to which the platform of tibial base 10 can be installed by cutting off out, pass through mould Tool 40 can measure the area size of excision, the hole position for installing tibial base 10 can also be determined by mold 40 Position, then convenient for punching.After excision and punching, the tibial base 10 and shin bone pad 20 can be installed, completed Installation to anatomical form knee-joint prosthesis.
The concrete structure of tibial base 10 is in the present embodiment, in its of 111 center line of leading edge of deviation tibial tray 11 Middle one side and there is the first point portion a1 and second point portion a2 along side positioned at the lower of leading edge 111, on the leading edge 111 With the first point portion a1 and second point portion a2 of connection and the first raised longitudinally upward camber line portion 113, the tibial tray 11 Lower surface on there is the first point portion a1 and second point portion a2 of connection and the second camber line of surface middle part protrusion laterally down Portion 114 forms on the leading edge 111 and is surrounded from the first camber line portion 113 and the second camber line portion 114 by profile and to shin bone The 11 concave cambered surface breach structure 112 in inside of pallet.By being provided with the cambered surface breach structure in tibial base 10 112, the shin bone stop of ALL can be avoided by the notch, and so that ALL tubercles are retained.
By the further restriction to cambered surface breach structure 112, the shin bone dead-centre position of ALL is accurately positioned.To pass through The cross-section center of the tibial tray 11 of some portion a1 and second point portion a2 is dot and 112 place quadrant of cambered surface breach structure Region is 34 ° -38 °, by second point portion a2, dot by the first point portion a1, the ray of dot and the angle of axis of ordinates The angle of ray and axis of abscissas is 16-20 °.Further preferably technical solution, by the first point portion a1, dot ray with The angle of axis of ordinates is 36 °, is 18 ° by second point portion a2, the ray of dot and the angle of axis of abscissas.Further limit It is fixed, it connects the first point portion a1 and second point portion a2 and forms line part, the arc top in the second camber line portion 114 and the distance f1 of line part are The width b/10 of tibial tray 11, the arc top in the first camber line portion 113 and the distance f2 of line part are f1+1mm.
With reference to Fig. 4-5, as the one of which embodiment of the present invention, the arc vertex in the second camber line portion 114 with The intersection point of the line part is located at the midpoint of line part, the arc vertex in the first camber line portion 113 and the line part Intersection point be located at the midpoint of line part.
With reference to Fig. 6-7, as another embodiment of the invention, the arc vertex in the second camber line portion 114 and institute The intersection point for the line part stated is located at first trisection point of the close ordinate of line part;The first camber line portion 113 The intersection point of arc vertex and the line part is located at first trisection point of the close ordinate of line part.
By the restriction of above two embodiment, the cambered surface breach structure 112 can adapt to make in a variety of crowds With.
According to the selection of the left leg and right leg used, cambered surface breach structure may be selected in the cambered surface breach structure 112 of the present invention Position where 112, such as left leg in use, if cambered surface breach structure 112 may be employed be located at when being directed to the leading edge 111 The tibial base 10 in the right.
The mold 40 of the present invention is measured for incisura and boring positioning, and the mold 40 includes positioning disk 41, described Positioning disk 41 has the cross-sectional profiles structure identical with tibial tray 11, several location holes are provided on positioning disk 41, It is characterized in that, is provided on the positioning disk 41 with the sunk structure for projecting, longitudinally cutting out in the second camber line portion 114.
Mold 40 further includes handle 42, and handle 42 is connected to the side of positioning disk 41.

Claims (8)

1. a kind of tibial base (10), the tibial base (10) includes tibial tray (11) and along tibial tray (11) The elongation bar (12) that lower surface extends downwardly, which is characterized in that in its of leading edge (111) center line of deviation tibial tray (11) Middle one side and positioned at leading edge (111) it is lower along side have the first point portion (a1) and second point portion (a2), the leading edge (111) there is the first point portion (a1) of connection and second point portion (a2) and the first raised longitudinally upward camber line portion (113) on, it is described Tibial tray (11) lower surface on there is the first point portion (a1) of connection and second point portion (a2) and laterally down among surface Second camber line portion (114) of position protrusion is formed by the first camber line portion (113) and the second camber line on the leading edge (111) Portion (114) is surrounded by profile and to concave cambered surface breach structure (112) on the inside of tibial tray (11).
2. tibial base (10) according to claim 1, which is characterized in that pass through the first point portion (a1) and second point portion (a2) cross-section center of tibial tray (11) is quadrant area where dot and cambered surface breach structure (112), by first Point portion (a1), the ray of dot and the angle of axis of ordinates are 34 ° -38 °, by second point portion (a2), ray and the horizontal stroke of dot The angle of reference axis is 16-20 °.
3. solution tibial base (10) according to claim 2, which is characterized in that the first point portion (a1) of connection and second point portion (a2) line part, the arc top in the second camber line portion (114) and the width b/10 that the distance f1 of line part is tibial tray (11) are formed, The arc top in the first camber line portion (113) and the distance f2 of line part are f1+1mm.
4. tibial base (10) according to claim 3, which is characterized in that the arc top in the second camber line portion (114) Point is located at the midpoint of line part with the intersection point of the line part, the arc vertex in the first camber line portion (113) and described The intersection point of line part is located at the midpoint of line part.
5. tibial base (10) according to claim 3, which is characterized in that the arc top in the second camber line portion (114) The intersection point of point and the line part is located at first trisection point of the close ordinate of line part;The first camber line portion (113) intersection point of arc vertex and the line part is located at first trisection point of the close ordinate of line part.
6. a kind of anatomical form knee-joint prosthesis, including shin bone pad (20) and femoral prosthesis (30), which is characterized in that further include as Tibial base (10) in claim 1-5 described in any one.
7. a kind of mold (40) of the tibial base (10) in 1-5 such as claim as described in any one, the mold (40) is used In incisura measurement and boring positioning, the mold (40) includes positioning disk (41), and the positioning disk (41) has and shin bone The identical cross-sectional profiles structure of pallet (11), positioning disk are provided with several location holes on (41), which is characterized in that described It is provided on positioning disk (41) with the sunk structure for projecting, longitudinally cutting out in the second camber line portion (114).
8. mold (40) according to claim 7, which is characterized in that the mold (40) further includes handle (42), Hand (42) is connected to the side of positioning disk (41).
CN201810010421.0A 2018-01-05 2018-01-05 A kind of tibial base, anatomical form knee-joint prosthesis and mold Pending CN108056846A (en)

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CN201810010421.0A CN108056846A (en) 2018-01-05 2018-01-05 A kind of tibial base, anatomical form knee-joint prosthesis and mold

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Application Number Priority Date Filing Date Title
CN201810010421.0A CN108056846A (en) 2018-01-05 2018-01-05 A kind of tibial base, anatomical form knee-joint prosthesis and mold

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113633436A (en) * 2020-04-27 2021-11-12 萨摩(重庆)医疗器材有限公司 3D prints trabecular tibia of metal bone and renovates cushion
CN113892999A (en) * 2021-10-13 2022-01-07 山东大学齐鲁医院(青岛) Thighbone perforating device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0517678D0 (en) * 2005-08-31 2005-10-05 Chana Gursharan S Knee prosthesis
US20070185581A1 (en) * 2006-02-07 2007-08-09 Howmedica Osteonics Corp. Tibial prosthesis with asymmetric articular surfaces
CN201500214U (en) * 2009-09-30 2010-06-09 北京纳通投资有限公司 Knee-joint prosthesis
CN104586544A (en) * 2015-01-15 2015-05-06 北京爱康宜诚医疗器材股份有限公司 High-flexion type knee joint prosthesis
CN106462659A (en) * 2014-03-19 2017-02-22 先进机械技术有限公司 System and method for ligament insertion in knee joint surgeries using adaptive migration of ligament insertion geometry
CN109172052A (en) * 2018-08-27 2019-01-11 常州华众生物科技有限公司 A kind of knee joint tibial system and knee joint medical device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0517678D0 (en) * 2005-08-31 2005-10-05 Chana Gursharan S Knee prosthesis
US20070185581A1 (en) * 2006-02-07 2007-08-09 Howmedica Osteonics Corp. Tibial prosthesis with asymmetric articular surfaces
CN201500214U (en) * 2009-09-30 2010-06-09 北京纳通投资有限公司 Knee-joint prosthesis
CN106462659A (en) * 2014-03-19 2017-02-22 先进机械技术有限公司 System and method for ligament insertion in knee joint surgeries using adaptive migration of ligament insertion geometry
CN104586544A (en) * 2015-01-15 2015-05-06 北京爱康宜诚医疗器材股份有限公司 High-flexion type knee joint prosthesis
CN109172052A (en) * 2018-08-27 2019-01-11 常州华众生物科技有限公司 A kind of knee joint tibial system and knee joint medical device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113633436A (en) * 2020-04-27 2021-11-12 萨摩(重庆)医疗器材有限公司 3D prints trabecular tibia of metal bone and renovates cushion
CN113892999A (en) * 2021-10-13 2022-01-07 山东大学齐鲁医院(青岛) Thighbone perforating device
CN113892999B (en) * 2021-10-13 2023-07-21 山东大学齐鲁医院(青岛) Femur perforating device

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