CN110393613A - A kind of elbow joint prosthese - Google Patents
A kind of elbow joint prosthese Download PDFInfo
- Publication number
- CN110393613A CN110393613A CN201910750166.8A CN201910750166A CN110393613A CN 110393613 A CN110393613 A CN 110393613A CN 201910750166 A CN201910750166 A CN 201910750166A CN 110393613 A CN110393613 A CN 110393613A
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- China
- Prior art keywords
- lug
- humerus
- hole
- elbow joint
- shaft
- 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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- 210000002310 elbow joint Anatomy 0.000 title claims abstract description 72
- 210000002758 humerus Anatomy 0.000 claims abstract description 126
- 230000006835 compression Effects 0.000 claims abstract description 8
- 238000007906 compression Methods 0.000 claims abstract description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 230000013011 mating Effects 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 239000010936 titanium Substances 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 4
- 210000000623 ulna Anatomy 0.000 description 14
- 210000000988 bone and bone Anatomy 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 8
- 239000002639 bone cement Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 7
- 108010048734 sclerotin Proteins 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000001364 upper extremity Anatomy 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 240000002299 Symphytum officinale Species 0.000 description 1
- 235000005865 Symphytum officinale Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
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
- A61F2/38—Joints for elbows or knees
- A61F2/3804—Joints for elbows or knees for elbows
-
- 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
- A61F2/38—Joints for elbows or knees
- A61F2/3804—Joints for elbows or knees for elbows
- A61F2002/3822—Humeral components
-
- 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
- A61F2/38—Joints for elbows or knees
- A61F2/3804—Joints for elbows or knees for elbows
- A61F2002/3831—Ulnar components
Abstract
The present invention relates to medical prosthesis technical fields, disclose a kind of elbow joint prosthese.The elbow joint prosthese includes: artificial body of the humerus, the first lug extended along the length direction far from artificial body of the humerus and the second lug are respectively formed on the opposite two sides of the connecting pin of artificial body of the humerus, it is provided with first through hole in first lug, second through-hole coaxial with first through hole is provided on the second lug；Ulnar prosthesis is provided with third through-hole on one end opposite with connecting pin of ulnar prosthesis；Rotating assembly, rotating assembly include shaft, and shaft is used to be rotatablely connected artificial body of the humerus and ulnar prosthesis also cross first through hole, the second through-hole and third through-hole.Wherein, shaft is arranged to the axial stretching along shaft, so that the second end of shaft can be placed under compression in the second through-hole after the first end of shaft can be placed in first through hole in the initial state.The elbow joint prosthese can be improved the precision being fixedly connected with pulp cavity, to guarantee the stability after its connection.
Description
Technical field
The present invention relates to medical prosthesis technical field more particularly to a kind of elbow joint prostheses.
Background technique
Elbow joint prosthese is to be used to plant instead of the surgery at human body sufferer elbow joint position applied in Elbow replacement art
Enter object, is mainly made of artificial body of the humerus, ulnar prosthesis and joint shaft.Artificial body of the humerus is used to be connected with the humerus of human body,
For ulnar prosthesis for being connected with the ulna of human body, joint shaft is used to connect the end of artificial body of the humerus and ulnar prosthesis so that the two
It is relatively rotatable to each other.
However, elbow joint prosthese is when in use, there are the deficiencies of following several respects: on the one hand, due to elbow joint prosthese
It is that artificial body of the humerus and ulnar prosthesis are connected by joint shaft, needs that first ulnar prosthesis and artificial body of the humerus exist when in use
After the completion of people's Ligation in vitro, then ulnar prosthesis and artificial body of the humerus be integrally fixed in corresponding pulp cavity, easily caused in this way
The inaccuracy for the position that ulnar prosthesis and artificial body of the humerus are fixed in pulp cavity, to cause operative failure or need to retighten vacation
Position of the body in pulp cavity, and then increase the operation difficulty of doctor during operation；On the other hand, elbow joint prosthese is often by ulna
Certain gap is designed between prosthese and artificial body of the humerus, while so that ulnar prosthesis can be rotated relative to artificial body of the humerus, also
Swing of the ulnar prosthesis relative to artificial body of the humerus can be realized by the gap, to avoid the radius because of human body in rotation and swing
The shear stress of generation passes on elbow joint prosthese, bone cement or bone interface and causes the loosening of elbow joint prosthese or showing for dislocation
As occurring, but this also to produce biggish shaking problem between ulnar prosthesis and artificial body of the humerus to a certain extent, thus
It is be easy to cause the loosening of artificial body of the humerus or ulnar prosthesis, reduces the connective stability of elbow joint prosthese, or even is larger in gap
When, it is also easy to cause the abrasion of the articular surface of the elbow joint of human body.
In view of the deficiencies of the prior art, those skilled in the art is badly in need of seeking a kind of elbow joint prosthese, can mention
The precision that height is fixedly connected with pulp cavity, to guarantee the stability after its connection.
Summary of the invention
In order to improve the precision being fixedly connected with pulp cavity, to guarantee the stability after its connection, the invention proposes one
Kind elbow joint prosthese.
Elbow joint prosthese according to the present invention includes: artificial body of the humerus, is divided on the opposite two sides of the connecting pin of artificial body of the humerus
It is not formed with and is provided with the in the first lug extended of length direction and the second lug far from artificial body of the humerus, first lug
One through-hole is provided with second through-hole coaxial with first through hole on the second lug；Ulnar prosthesis, ulnar prosthesis with connecting pin phase
Pair one end on be provided with third through-hole；And rotating assembly, rotating assembly include shaft, shaft is used for logical also cross first
Artificial body of the humerus and ulnar prosthesis are rotatablely connected by hole, the second through-hole and third through-hole.Wherein, shaft is arranged to edge
The axial stretching of shaft, so that after the first end of shaft can be placed in first through hole in the initial state, the second end energy of shaft
It is enough to be placed in the second through-hole under compression, so that one end opposite with connecting pin of ulnar prosthesis is rotatably connected on first
Between lug and the second lug.
Further, the first end of shaft and second end are all provided with that be set to can be along the axial stretching of shaft.
Further, rotating assembly further include be set in shaft between first lug and ulnar prosthesis and position
Two humerus axle sleeves between the second lug and ulnar prosthesis, two humerus axle sleeves are sliding with first lug and the second lug respectively
Dynamic connection.
Further, opposite two side of first lug and the second lug has been respectively formed on the first notch, the first slot
Mouth is connected to the outer edge of first lug and the second lug respectively, the side opposite with first lug and the second lug of humerus axle sleeve
The first sliding block matched with the first notch is respectively formed on face.
Further, the edge of the first notch has tapered on the outer peripheral direction of first lug or the second lug
Width.
Further, the second notch, the second slot are also formed on opposite two side of first lug and the second lug
Mouthful be located at the first notch in or the second notch be located at outside the first notch, humerus axle sleeve it is opposite with first lug or the second lug
The second sliding block matched with the second notch is also respectively formed on side.
Further, outer peripheral one end of the close humerus axle sleeve of the second sliding block is formed with expanding trough, expanding trough construction
At can elasticity be connected in the second notch.
Further, it is also formed with threaded hole on first lug and the second lug, rotating assembly further includes and threaded hole spiral shell
The screw for being used for fixed rotating shaft and/or humerus axle sleeve of line connection.
Further, connecting pin further includes the joint face for connecting first lug and the second lug, and elbow joint prosthese further includes
The cushion block being removably attached on joint face, cushion block one end opposite with connecting pin with ulnar prosthesis form mating spherical surfaces.
Further, it is formed with titanium pearl sinter layer on the surface of artificial body of the humerus, is formed with titanium pearl on the surface of ulnar prosthesis
Spray coating.
Compared with prior art, elbow joint prosthese of the invention has the advantages that following several respects:
1) elbow joint prosthese of the invention is by artificial body of the humerus with humerus by after first connect, then by ulnar prosthesis and humerus vacation
Body is connected, so that can accurately determine the shaft and human body of elbow joint prosthese before artificial body of the humerus is connect with ulnar prosthesis
Elbow joint rotation center position so that after elbow joint prosthetic replacement of the invention more with the elbow joint of human body
Match, and then can effectively improve its precision being fixedly connected with pulp cavity, to guarantee the stability after its connection；
2) elbow joint prosthese of the invention is by setting cushion block, to fill ulnar prosthesis relative between the shaking of artificial body of the humerus
Gap, additionally it is possible to the stability of connection of the effective raising elbow joint prosthese after displacement, effectively to avoid elbow joint because depositing
Clearance issues and caused by articular surface abrasion the phenomenon that occur；
3) elbow joint prosthese of the invention is in shaft by being arranged two humerus axle sleeves, and makes humerus axle sleeve respectively with
One lug and the second lug are slidably connected so that ulnar prosthesis by shaft be connected with artificial body of the humerus when, so as to more preferable
Control elbow joint prosthese rotation center, also make doctor connect ulnar prosthesis and when artificial body of the humerus preferably protects human body
Elbow joint left and right condyle；
4) ulnar prosthesis of elbow joint prosthese of the invention enables ulnar prosthesis by forming mating spherical surfaces with cushion block
It realizes and swings relative to artificial body of the humerus, so that the shear stress generated when the radius of human body is in rotation and swing is in ruler
When on bone prosthese, ulnar prosthesis can generate the swing of adaptability by mating spherical surfaces, so as to be effectively prevented from the oar because of human body
The shear stress that bone is generated in rotation and swing passes on elbow joint prosthese, bone cement or bone interface and causes elbow joint prosthese
Loosening or dislocation the phenomenon that occur.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element
Or part is generally identified by similar appended drawing reference.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is the structural schematic diagram of elbow joint prosthese according to the present invention；
Fig. 2 is the structural schematic diagram of artificial body of the humerus shown in FIG. 1；
Fig. 3 is the structural schematic diagram of ulnar prosthesis shown in FIG. 1；
Fig. 4 is the structural schematic diagram of the shaft of rotating assembly shown in FIG. 1；
Fig. 5 is the structural schematic diagram of the humerus axle sleeve of rotating assembly shown in FIG. 1；
Fig. 6 is the bolt structure schematic diagram of rotating assembly shown in FIG. 1；
Fig. 7 is the structural schematic diagram of cushion block shown in FIG. 1.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solution of the present invention.Following embodiment is only used for
Clearly illustrate technical solution of the present invention, therefore be only used as example, and cannot be used as a limitation and limit protection model of the invention
It encloses.
Fig. 1 shows the structure of elbow joint prosthese 100 according to the present invention.In conjunction with shown in Fig. 1 to Fig. 4, the elbow joint is false
Body 100 includes: artificial body of the humerus 1, is respectively formed on the opposite two sides of the connecting pin 11 of artificial body of the humerus 1 along far from artificial body of the humerus
The first lug 12 and the second lug 13 that 1 length direction extends, are provided with first through hole 121 in first lug 12, and second
Second through-hole 131 coaxial with first through hole 121 is provided on lug 13；Ulnar prosthesis 2, ulnar prosthesis 2 with connecting pin 11
Third through-hole 211 is provided on opposite one end 21；And rotating assembly 3, rotating assembly 3 include shaft 31, shaft 31 is used for
Also cross first through hole 121, the second through-hole 131 and third through-hole 211, artificial body of the humerus 1 and the rotation of ulnar prosthesis 2 are connected
It connects.Wherein, shaft 31 is arranged to the axial stretching along shaft 31, so that the first end 311 of shaft 31 can be in initial shape
After being placed in first through hole 121 under state, the second end 312 of shaft 31 can be placed under compression in the second through-hole 131, thus
One end 21 opposite with connecting pin 11 of ulnar prosthesis 2 is rotatably connected between first lug 12 and the second lug 13.
Artificial body of the humerus 1 when in use, is first plugged in the medullary cavity of humerus of human body by elbow joint prosthese 100 of the invention, with
So that artificial body of the humerus 1 is connected with humerus, and is located at the position in medullary cavity of humerus by adjusting artificial body of the humerus 1, so that coaxial arrangement
The axis of first through hole 121 and the second through-hole 131 in first lug 12 and the second lug 13 can be closed approximately with human body elbow
The rotation center of section is overlapped.Ulnar prosthesis 2 is plugged in the ulna pulp cavity of human body again, so that ulnar prosthesis 2 and human body
Ulna is connected, while shaft 31 being connected in third through-hole 211.The present invention is by being arranged to shaft 31 along its own
Axial stretching, enable shaft 31 to have initial length in the initial state and maximum compression under compression long
Degree, and by the way that initial length is set greater than the distance between first through hole 121 and the second through-hole 131, maximum compression is long
Degree is set smaller than that (first through hole 121 here and second is led to equal to the distance between first through hole 121 and the second through-hole 131
The distance between hole 131 can be regarded as the distance between first lug 12 and the second lug 13), ulnar prosthesis 2 is existed
Region insertion first lug 12 and the when shaft 31 is in maximum compression length between first lug 12 and the second lug 13
Between two lugs 13, and so that shaft 31 is connected to first through hole 121 and second when shaft 31 reverts to initial length and lead to
In hole 131, to complete the connection of ulnar prosthesis 2 Yu artificial body of the humerus 1, to complete the displacement of elbow joint prosthese 100, realize that elbow closes
The movable function of section.
By above-mentioned setting, compared with prior art, elbow joint prosthese 100 of the invention by first by artificial body of the humerus 1 with
Humerus connection, then ulnar prosthesis 2 is connected with artificial body of the humerus 1, so that before artificial body of the humerus 1 is connect with ulnar prosthesis 2, it can
The position of the rotation center of the shaft of elbow joint prosthese 100 and the elbow joint of human body is accurately determined, so that elbow of the invention
Articular prosthesis 100 more matches after displacement with the elbow joint of human body, is fixedly connected so as to effectively improve it with pulp cavity
Precision, guarantee its connection after stability.This just effectively avoids elbow joint prosthese in the prior art and needs in body
Outer grip ulnar prosthesis and artificial body of the humerus connect and then ulnar prosthesis and artificial body of the humerus are rapidly fixed in pulp cavity, and
The ulnar prosthesis and artificial body of the humerus of generation malposition fixed in pulp cavity, cause operative failure and needs to retighten vacation
The problem of position of the body in pulp cavity.
In a preferred embodiment, can be set to can be along turning for the first end 311 of shaft 31 and second end 312
The axial stretching of axis 31, so that ulnar prosthesis 2 is by shaft 31 and artificial body of the humerus 1 when being attached, it can be by pressing simultaneously
Contracting first end 311 and second end 312 is more convenient that shaft 31 is connected in first through hole 121 and the second through-hole 131, thus
So that ulnar prosthesis 2 and the connection of artificial body of the humerus 1 are more efficient and convenient.
Preferably, shaft 31 is chosen as elastic bayonet lock.
Preferably, first through hole 121 and the second through-hole 131 may each comprise for connecting first end 311 and second end 312
First sub-through hole (not shown), and the second sub-through hole (figure for being abutted with first end 311 and 312 elasticity of second end
In be not shown), the aperture of the first sub-through hole is greater than the aperture of the second sub-through hole, and the shape design of the second sub-through hole is triangle,
To improve the stability that first end 311 and second end 312 are abutted with the elasticity of the second sub-through hole.
Preferably, as shown in figure 5, rotating assembly 3, which may also include to be set in shaft 31, is located at first lug 12 and ruler
Two humerus axle sleeves 32 between bone prosthese 2, and between the second lug 13 and ulnar prosthesis 2, two humerus axle sleeves 32 divide
It is not slidably connected with first lug 12 and the second lug 13.By the setting, it is convex that humerus axle sleeve 32 can be effectively prevented from first
Contact between ear 12 and ulnar prosthesis 2, the second lug 13 and ulnar prosthesis 2, to effectively avoid because between metal material
Contact and caused by elbow joint prosthese 100 wear problem.
In preferred embodiment as shown in Figure 5, humerus axle sleeve 32 may include sleeve body 324 and be formed in axle sleeve sheet
The defining flange 325 of one end of body 324, defining flange 325 can be between first lug 12 and ulnar prosthesis 2, the second lugs
Between 13 and ulnar prosthesis 2, sleeve body 324 can be set in the third through-hole 211 of ulnar prosthesis 2.Pass through the setting, humerus
Axle sleeve 32 can also be effectively prevented from the contact between ulnar prosthesis 2 and shaft 31, thus further avoid because metal material it
Between contact and caused by elbow joint prosthese 100 wear problem.
In preferred embodiment as shown in Figure 2, on opposite two side of first lug 12 and the second lug 13
It can be formed with the first notch 14, the first notch 14 can be connected to the outer edge of first lug 12 and the second lug 13 respectively, the upper arm
It is respectively formed on the side opposite with first lug 12 and the second lug 13 of axis of bone set 32 and is matched with the first notch 14
The first sliding block 321 (as shown in connection with fig. 5).By the setting, the first sliding block 321 can make with being slidably matched for the first notch 14
Ulnar prosthesis 2, can in the first notch 14 by the way that the first sliding block 321 to be inserted into when being connected by rotating assembly 3 with artificial body of the humerus 1
The installation direction and installation site for effectively limiting ulnar prosthesis 2, can not only enable shaft 31 more quick in this way
It is connected with first through hole 121 and the second through-hole 131, to avoid the problem of its installation site inaccuracy, so as to better
The rotation center for controlling elbow joint prosthese 100, the doctor that is also more convenient for can be more preferable when connecting ulnar prosthesis 2 and artificial body of the humerus 1
Protection human body elbow joint left and right condyle, with it is more efficiently shorten elbow joint prosthese 100 time swap, improve elbow joint
The displacement efficiency of prosthese 100.
Preferably, as shown in Fig. 2, the edge of the first notch 14 is away from first lug 12 or the outer peripheral side of the second lug 13
There can be tapered width upwards.Here tapered width can be regarded as: the width of the first notch 14 from first lug 12 or
The outer edge of second lug 13 to first through hole 121 or the second through-hole 131 gradually becomes smaller, i.e., the first notch 14 may be configured to sector
Structure.In this way, the first sliding block 321 can be made when being slidably matched with the first notch 14, the first notch of the biggish opening having
14 first sliding blocks 321 of being more convenient for are slidably connected along multiple directions with it, so that the installation of humerus axle sleeve 32 is more square
Just quick.
Preferably, as shown in Fig. 2, may also be formed on opposite two side of first lug 12 and the second lug 13
Two notches 15, the second notch 15 can be located in the first notch 14 or the second notch 15 can be located at outside the first notch 14, humerus axle sleeve
Matched with the second notch 15 is also respectively formed on 32 side opposite with first lug 12 or the second lug 13
Two sliding blocks 322 (as shown in connection with fig. 5).By the setting, the second notch 15 and the second being slidably matched for sliding block 322 can be arranged to
Play guiding when being slidably connected in humerus axle sleeve 32 and first lug 12 or the second lug 13, in this way in ulnar prosthesis 2
When being connected by humerus axle sleeve 32 with artificial body of the humerus 1, it is capable of the precision of the more efficiently installation for improving shaft 31.It is preferred that
Ground, the second notch 15 can be located in the first notch 14.
What needs to be explained here is that connecting to improve shaft 31 with first through hole 121 and the second through-hole 131 accurate
Degree, can be by the slot bottom (i.e. the outer peripheral bottom surface far from first lug 12 or the second lug 13) of the first notch 14 and the second notch
15 slot bottom (i.e. the outer peripheral bottom surface far from first lug 12 or the second lug 13), which is all provided with, to be set to and first through hole 121 and
Two through-holes 131 are connected.In this way, being slidably connected by humerus axle sleeve 32 and first lug 12 or the second lug 13, directly
Shaft 31 is accurately pushed into first through hole 121 and the second through-hole 131 by ground, so that the installation of shaft 31 is more convenient,
And then the displacement efficiency of elbow joint prosthese 100 can be further improved.
In preferred embodiment as shown in Figure 5, outer peripheral one end of the close humerus axle sleeve 32 of the second sliding block 322
It can be formed with expanding trough 323, expanding trough 323 is configured to elasticity and is connected in the second notch 15.It, can be by the setting
After second sliding block 322 is connected to the slot bottom of the second notch 15, abutted by expanding trough 323 with the elasticity of the second notch 15, so that
Humerus axle sleeve 32 is capable of fixing in first lug 12 and the second lug 13, so as to effectively improve humerus axle sleeve 32 and first
Stability after lug 12 and the connection of the second lug 13.
In preferred embodiment as shown in Figure 2, threaded hole may also be formed on first lug 12 and the second lug 13
16, rotating assembly 3 may also include the screw 33 for being used for fixed rotating shaft 31 and/or humerus axle sleeve 32 being threadedly coupled with threaded hole 16
It (as shown in connection with fig. 6), can be effective by screw 33 so that after ulnar prosthesis 2 connect by rotating assembly 3 with artificial body of the humerus 1
Raising connection between the two stability.
In preferred embodiment as shown in Figure 2, connecting pin 11 may also include connection first lug 12 and the second lug
13 joint face 111, elbow joint prosthese 100 may also include the cushion block 4 being removably attached on joint face 111, cushion block 4 and ruler
One end 21 opposite with connecting pin 11 of bone prosthese 2 can form mating spherical surfaces.Pass through above-mentioned setting, on the one hand, setting can be passed through
Cushion block 4 fill shaking gap of the ulnar prosthesis 2 relative to artificial body of the humerus 1, so as to effectively improve elbow joint prosthese 100
The stability of connection after displacement, with effectively avoid elbow joint due to existing clearance issues caused by articular surface mill
The phenomenon that damage, occurs；On the other hand, mating spherical surfaces are formed by ulnar prosthesis 2 and cushion block 4, also enables 2 phase of ulnar prosthesis
Artificial body of the humerus 1 is realized and is swung, so that the shear stress generated when the radius of human body is in rotation and swing is in ruler
When on bone prosthese 2, ulnar prosthesis 2 can generate the swing of adaptability by mating spherical surfaces, so as to be effectively prevented from because of human body
The shear stress that radius is generated in rotation and swing passes on elbow joint prosthese 100, bone cement or bone interface and elbow is caused to close
The phenomenon that saving the loosening or dislocation of prosthese 100 occurs.
In preferred embodiment as shown in Figure 7, cushion block 4 may include the top surface that mating spherical surfaces are formed with ulnar prosthesis 2
41, and be detachably fixed with joint face 111 bottom surface 42 of connection, it can be formed on bottom surface 42 for being connected with joint face 111
Connecting column (not shown) can be formed with the groove (not shown) for accommodating cushion block 4 on joint face 111 and be formed in
The connecting hole 112 (as shown in connection with fig. 2) for being connected with connecting column in groove.Preferably, the side of connecting pin 11 can also shape
The removal hole 113 (as shown in connection with fig. 2) that Cheng Youyu cushion block 4 is connected, in order to cushion block 4 installation and overhaul.
In a preferred embodiment, titanium pearl sinter layer can be formed on the surface of artificial body of the humerus 1 (not show in figure
Out), titanium pearl spray coating (not shown) can be formed on the surface of ulnar prosthesis 2.By the setting, titanium pearl sinter layer has
Biggish metal grain structure surface, the surface area of artificial body of the humerus 1 is capable of increasing, so as to effectively improve bone cement
Ground fixing intensity, simultaneously, additionally it is possible to improve the Bone Ingrowth effect of the contact surface of artificial body of the humerus 1 and humerus；And titanium pearl spray coating has
The surface for the lesser metal grain structure having can effectively improve the fixed effect of bone cement, to improve ulna vacation
The immediate fixed and fixed for a long time effect of bone cement of the body 2 after displacement.
In preferred embodiment as shown in Figure 2, artificial body of the humerus 1, which may also include from connecting pin 11, is in reverse to first lug
12 and second lug 13 the flange 17 that extends of extending direction.Pass through the setting, on the one hand, in artificial body of the humerus 1 and human body
After humerus connection, can by being abutted with the outer wall of humerus by the position at maximum stress in humerus of flange 17, so as to
The ability to bear of the humerus at this is effectively improved, thus play the surface of protection bone, bone cement and elbow joint prosthese 100
Effect；On the other hand, flange 17 abuts the risk for loosening and reversing that can also reduce artificial body of the humerus 1 with the outer wall of humerus, from
And it can further improve the stability after the connection of artificial body of the humerus 1.
In a preferred embodiment, the shape of the cross section of the humerus handle 18 of artificial body of the humerus 1 can be configured to triangle
Shape (as shown in connection with fig. 2), the shape of the cross section of the ulna handle 22 of ulnar prosthesis 2 can be configured to quadrangle (as shown in connection with fig. 3).
By the setting, it can make humerus handle 18 after the medullary cavity of humerus with human body is connect, the cross section of triangle can be improved its stabilization
Effect and its rotation in pulp cavity is avoided, the stability after connection so as to improve artificial body of the humerus 1；Likewise, ulna
After handle 22 is connect with the ulna pulp cavity of human body, the cross section of quadrangle can be such that the stress of ulna handle 22 more balances, so as to
The intensity of ulnar prosthesis 2 when in use is enough improved, while rotation of the ulnar prosthesis 2 in ulna pulp cavity can also be avoided, in turn
Stability and using effect after improving the connection of ulnar prosthesis 2.In addition, the said effect having, also helps adaptability
Design humerus handle 18 and ulna handle 22 fineness, for example, can design humerus handle 18 and ulna handle 22 is relatively thin, with suitable
For medullary cavity of humerus and the lesser patient of ulna pulp cavity；Humerus handle 18 and ulna handle 22 can also be designed is relatively thick, to be applicable in
In the very big osteotomy amount of needs such as fracture or tumour or in the presence of the patient of very big bone defect.
In a preferred embodiment, the situation in ulnar prosthesis 2 relative to the rotational angle maximum of artificial body of the humerus 1
Under, the angular range of the length direction of the length direction and artificial body of the humerus 1 of ulnar prosthesis 2 can be 10 ° to 15 °, so that this hair
Bright elbow joint prosthese 100 can satisfy the elbow joint carrying angle of human body after displacement, to realize height simulated humanbody
The effect of elbow joint.Elbow joint carrying angle is it is understood that the upper limb arm axle of human body is by the line of the humerus longitudinal axis, preceding arm axle and ruler
Bone long axis is consistent.The extended line of upper limb arm axle and preceding arm axle is crossed to form an angle opened outward, about 165 ° to 170 °, mends
Angle is 10 ° to 15 °, i.e., the length direction of the ulnar prosthesis 2 of elbow joint prosthese 100 of the invention and the length side of artificial body of the humerus 1
To angular range.
In a preferred embodiment, the connecting pin 11 of artificial body of the humerus 1 and the position of humerus handle 18 being connected can shapes
At there is multiple cambered surfaces, so that artificial body of the humerus 1 after the humerus with human body is connected, can be effectively protected in patient's use process
Sclerotin around artificial body of the humerus 1 causes to wear to avoid artificial body of the humerus 1 to sclerotin, so that artificial body of the humerus can be effectively prevented 1 week
Fracture phenomenon occurs for the sclerotin enclosed.Preferably, artificial body of the humerus 1 can by artificial body of the humerus in the market square structure secondary operation at
Arcuate structure.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.Especially, as long as there is no knots
Structure conflict, items technical characteristic mentioned in the various embodiments can be combined in any way.The present invention does not limit to
In specific embodiment disclosed herein, but include all technical solutions falling within the scope of the claims.
Claims (10)
1. a kind of elbow joint prosthese characterized by comprising
Artificial body of the humerus is respectively formed on the opposite two sides of the connecting pin of the artificial body of the humerus along far from the artificial body of the humerus
The first lug and the second lug that length direction extends are provided with first through hole, second lug in the first lug
On be provided with second through-hole coaxial with the first through hole；
Ulnar prosthesis is provided with third through-hole on one end opposite with the connecting pin of the ulnar prosthesis；And
Rotating assembly, the rotating assembly include shaft, and the shaft is used to lead to also cross the first through hole, described second
The artificial body of the humerus and the ulnar prosthesis are rotatablely connected by hole and the third through-hole,
Wherein, the shaft is arranged to the axial stretching along the shaft, so that the first end of the shaft can be first
After being placed in the first through hole under beginning state, the second end of the shaft can be placed in second through-hole under compression
In, so that one end opposite with the connecting pin of the ulnar prosthesis is rotatably connected on the first lug and described second
Between lug.
2. elbow joint prosthese according to claim 1, which is characterized in that the first end of the shaft and described second
End is all provided with that be set to can be along the axial stretching of the shaft.
3. elbow joint prosthese according to claim 2, which is characterized in that the rotating assembly further includes being set in described turn
On axis between the first lug and the ulnar prosthesis, and between second lug and the ulnar prosthesis
Two humerus axle sleeves, two humerus axle sleeves are slidably connected with the first lug and second lug respectively.
4. elbow joint prosthese according to claim 3, which is characterized in that the phase of the first lug and second lug
Pair two sides be respectively formed on the first notch, first notch respectively with the first lug and second lug
Outer edge connection, be respectively formed on the side opposite with the first lug and second lug of the humerus axle sleeve with
The first sliding block that first notch matches.
5. elbow joint prosthese according to claim 4, which is characterized in that the edge of first notch is convex away from described first
There is tapered width on the outer peripheral direction of ear or second lug.
6. elbow joint prosthese according to claim 4, which is characterized in that the phase of the first lug and second lug
Pair two sides on be also formed with the second notch, second notch is located in first notch or second notch position
In outside first notch, also distinguish on the side opposite with the first lug or second lug of the humerus axle sleeve
It is formed with the second sliding block matched with second notch.
7. elbow joint prosthese according to claim 6, which is characterized in that the close humerus axle sleeve of second sliding block
Outer peripheral one end be formed with expanding trough, the expanding trough is constructed to be permeable to elasticity and is connected in second notch.
8. elbow joint prosthese according to claim 3, which is characterized in that in the first lug and second lug also
It is formed with threaded hole, the rotating assembly further includes being threadedly coupled with the threaded hole for fixing the shaft and/or institute
State the screw of humerus axle sleeve.
9. elbow joint prosthese according to any one of claim 1 or 2, which is characterized in that the connecting pin further includes connecting
The joint face of the first lug and second lug is connect, the elbow joint prosthese further includes being removably attached to the company
Cushion block in junction, cushion block one end opposite with the connecting pin with the ulnar prosthesis form mating spherical surfaces.
10. elbow joint prosthese according to claim 1 or 2, which is characterized in that be formed on the surface of the artificial body of the humerus
Titanium pearl sinter layer is formed with titanium pearl spray coating on the surface of the ulnar prosthesis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910750166.8A CN110393613A (en) | 2019-08-14 | 2019-08-14 | A kind of elbow joint prosthese |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910750166.8A CN110393613A (en) | 2019-08-14 | 2019-08-14 | A kind of elbow joint prosthese |
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| CN110393613A true CN110393613A (en) | 2019-11-01 |
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| CN201910750166.8A Pending CN110393613A (en) | 2019-08-14 | 2019-08-14 | A kind of elbow joint prosthese |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115844597A (en) * | 2023-02-27 | 2023-03-28 | 北京积水潭医院 | Elbow joint prosthesis |
| CN116019613A (en) * | 2023-03-30 | 2023-04-28 | 北京爱康宜诚医疗器材有限公司 | Semi-elbow joint prosthesis |
| CN116919672A (en) * | 2023-07-31 | 2023-10-24 | 首都医科大学附属北京积水潭医院 | Elbow joint semi-limiting type prosthesis |
| CN116965981A (en) * | 2023-09-25 | 2023-10-31 | 北京爱康宜诚医疗器材有限公司 | Elbow joint prosthesis |
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