CN110192935A - Elbow joint prosthese - Google Patents
Elbow joint prosthese Download PDFInfo
- Publication number
- CN110192935A CN110192935A CN201910404719.4A CN201910404719A CN110192935A CN 110192935 A CN110192935 A CN 110192935A CN 201910404719 A CN201910404719 A CN 201910404719A CN 110192935 A CN110192935 A CN 110192935A
- Authority
- CN
- China
- Prior art keywords
- humerus
- ulna
- hole
- elbow joint
- lug
- 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.)
- Pending
Links
- 210000002310 elbow joint Anatomy 0.000 title claims abstract description 53
- 210000002758 humerus Anatomy 0.000 claims abstract description 106
- 210000000623 ulna Anatomy 0.000 claims abstract description 76
- 230000013011 mating Effects 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 240000002299 Symphytum officinale Species 0.000 claims 1
- 235000005865 Symphytum officinale Nutrition 0.000 claims 1
- 210000000784 arm bone Anatomy 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 9
- 210000000988 bone and bone Anatomy 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 7
- 239000002639 bone cement Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 210000001364 upper extremity Anatomy 0.000 description 2
- 206010023204 Joint dislocation Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000010008 shearing 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
-
- 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
- A61F2002/3813—Joints for elbows or knees for elbows for ulno-humeral joints
-
- 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, artificial body of the humerus includes humerus handle and the humerus neck being connected with humerus handle, the first lug extended along the length direction far from humerus handle and the second lug are respectively formed on the opposite two sides of the end of humerus neck, it is provided with first through hole in first lug, the second through-hole is provided on the second lug；Ulnar prosthesis, ulnar prosthesis include the ulna handle, ulna neck and head of ulna being sequentially connected, and are provided with the third through-hole for extending transversely through head of ulna on head of ulna；Rotating assembly, rotating assembly include the connecting shaft for sequentially passing through first through hole, third through-hole and the second through-hole, and the ulna axle sleeve being set on the region between first lug and the second lug of connecting shaft.Wherein, the inner surface of the outer surface of ulna axle sleeve and third through-hole forms mating spherical surfaces.Elbow joint prosthese of the invention can be improved 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.Current existing elbow joint prosthese is mainly made of artificial body of the humerus, ulnar prosthesis, joint shaft pinning and axle sleeve.Humerus
Prosthese with the humerus of human body for being connected, and ulnar prosthesis with the ulna of human body for being connected, and joint shaft pinning is for connecting humerus
The end of prosthese and ulnar prosthesis is so that the two is relatively rotatable to each other, to realize that the movable function of elbow joint prosthese, axle sleeve are arranged
Between artificial body of the humerus and joint shaft pinning, ulnar prosthesis and joint shaft pinning, to avoid the contact between metal material.
However, elbow joint prosthese in the prior art is in order to adapt to the shearing that the radius of human body is generated in rotation and swing
Stress often designs certain gap at the rotation connection by ulnar prosthesis by axle sleeve and joint shaft pinning, for example, by ulna vacation
Certain gap is designed between body and axle sleeve, while so that ulnar prosthesis can be rotated relative to artificial body of the humerus, moreover it is possible to pass through
Biggish gap, which is realized, to be swung, so that the shear stress that the radius for effectively avoiding human body is generated in rotation and swing passes to
The phenomenon that loosening or dislocation of elbow joint prosthese caused by elbow joint prosthese, bone cement or bone interface, occurs.But this also one
Determine to produce biggish shaking problem in degree between ulnar prosthesis and artificial body of the humerus, thus be easy to cause artificial body of the humerus or
The loosening of ulnar prosthesis reduces the connective stability of elbow joint prosthese.Even when gap is larger, it is also easy to cause human body
The abrasion of the articular surface of elbow joint.
In view of the deficiencies of the prior art, those skilled in the art is badly in need of seeking a kind of stability that can be improved after connection
Elbow joint prosthese, to make up the deficiencies in the prior art.
Summary of the invention
In order to improve the stability after connection, to make up the deficiencies in the prior art, the invention proposes a kind of elbow passes
Save prosthese.
Elbow joint prosthese according to the present invention includes: artificial body of the humerus, and artificial body of the humerus includes humerus handle and is connected with humerus handle
Humerus neck, the extended along the length direction far from humerus handle is respectively formed on the opposite two sides of the end of humerus neck
One lug and the second lug are provided with first through hole in first lug, the second through-hole are provided on the second lug；Ulnar prosthesis,
Ulnar prosthesis includes the ulna handle, ulna neck and head of ulna being sequentially connected, and is provided on head of ulna and extends transversely through head of ulna
Third through-hole；Rotating assembly, rotating assembly include the connection for sequentially passing through first through hole, third through-hole and the second through-hole
Axis, and the ulna axle sleeve being set on the region between first lug and the second lug of connecting shaft.Wherein, ulna axle sleeve
Outer surface and third through-hole inner surface formed mating spherical surfaces so that ulnar prosthesis can relative to artificial body of the humerus rotate and put
It is dynamic.
Further, ulna axle sleeve include sleeve body and be formed on the periphery wall surface of sleeve body and third through-hole
Inner surface mating spherical surfaces the first spherical surface, the width in the axial direction along sleeve body of the first spherical surface is greater than the axis of third through-hole
Upward width.
Further, ulna axle sleeve further includes two circles being connected with the first spherical surface being formed on the both ends of sleeve body
Circumferential surface.
Further, the inner surface of ulna axle sleeve also with the outer surface of connecting shaft formed mating spherical surfaces, sleeve body it is interior
Surface is formed with the second spherical surface with the outer surface mating spherical surfaces of connecting shaft, and the outer surface of connecting shaft is formed with and the second spherical balls
The third spherical surface of face cooperation, the width in the axial direction along sleeve body of the second spherical surface are less than the axis along connecting shaft of third spherical surface
Upward width.
Further, rotating assembly further include two be respectively sleeved between connecting shaft and first through hole, connecting shaft and the
Humerus axle sleeve between two through-holes.
Further, artificial body of the humerus further includes the extension side that first lug and the second lug are in reverse to from the end of humerus neck
To the flange with humerus handle at angle extended.
Further, it is formed with titanium pearl sinter layer on the surface of artificial body of the humerus, is formed with metal on the surface of ulnar prosthesis
Magma spray coating.
Further, the shape design of the cross section of humerus handle is triangle, and the shape design of the cross section of ulna handle is
Quadrangle.
Further, groove is also formed on the end of humerus neck.
Further, in ulnar prosthesis relative in the maximum situation of rotational angle of artificial body of the humerus, the length of ulna handle
The angular range of the length direction of direction and humerus handle is 10 ° to 15 °.
Compared with prior art, elbow joint prosthese of the invention is realized by the mating spherical surfaces of ulnar prosthesis and artificial body of the humerus
Swing, make the third through-hole of ulnar prosthesis without forming gap between the ulna axle sleeve of the prior art, so as to effective
Avoid the shaking problem for because of existing gap elbow joint prosthese being generated after displacement in the prior art, and then not only
The stability of connection of the elbow joint prosthese after displacement is improved, also effectively avoids the elbow joint of human body because between existing
Gap problem and caused by articular surface abrasion 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 diagrammatic cross-section along the direction A-A of elbow joint prosthese shown in FIG. 1；
Fig. 3 is the structural schematic diagram of artificial body of the humerus shown in FIG. 1；
Fig. 4 is the structural schematic diagram of ulnar prosthesis shown in FIG. 1；
Fig. 5 is the structural schematic diagram of ulna axle sleeve shown in Fig. 2；
Fig. 6 is the structural schematic diagram of humerus axle sleeve shown in Fig. 2；
Fig. 7 is the structural schematic diagram followed closely outside pin shaft shown in Fig. 2；
Fig. 8 is the structural schematic diagram followed closely in pin shaft shown in Fig. 2.
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.
Figures 1 and 2 show that the structure of elbow joint prosthese 100 according to the present invention.In conjunction with shown in Fig. 1 to Fig. 4, which is closed
Section prosthese 100 includes: artificial body of the humerus 1, and artificial body of the humerus 1 includes humerus handle 11 and 12 (such as Fig. 3 of humerus neck being connected with humerus handle 11
It is shown), it is respectively formed on the opposite two sides of the end 13 of humerus neck 12 and extends along the length direction far from humerus handle 11
First lug 14 and the second lug 15 (as shown in Figure 2), be provided with first through hole 141, the second lug 15 in first lug 14
On be provided with the second through-hole 151；Ulnar prosthesis 2, ulnar prosthesis 2 include ulna handle 21, ulna neck 22 and the ruler being sequentially connected
Bone 23 (as shown in Figure 4) is provided with the third through-hole 231 for extending transversely through head of ulna 23 on head of ulna 23；Rotating assembly 3 turns
Shaft assembly 3 includes the connecting shaft 31 for sequentially passing through first through hole 141, third through-hole 231 and the second through-hole 151, and set
The ulna axle sleeve 32 (as shown in Figure 2) being located on the region between first lug 14 and the second lug 15 of connecting shaft 31.
Wherein, the inner surface of the outer surface of ulna axle sleeve 32 and third through-hole 231 forms mating spherical surfaces, so that ulnar prosthesis 2 being capable of phase
Artificial body of the humerus 1 is rotated and is swung.
The humerus handle 11 of artificial body of the humerus 1 when in use, is plugged in the humerus marrow of human body by elbow joint prosthese 100 of the invention
It is intracavitary, to realize the connection of the humerus of artificial body of the humerus 1 and human body, the ulna handle 21 of ulnar prosthesis 2 is plugged in the ulna of human body
In pulp cavity, to realize the connection of the ulna of ulnar prosthesis 2 and human body, meanwhile, the upper arm connected by the connecting shaft 31 of rotating assembly 3
Bone prosthese 1 and ulnar prosthesis 2 so that the elbow joint of human body after the displacement of elbow joint prosthese 100, can be realized ulna relative to
The rotation of humerus, to realize the movable function of elbow joint.Compared with prior art, elbow joint prosthese 100 of the invention exists
It is provided with ulna axle sleeve 32 between connecting shaft 31 and the third through-hole 231 of head of ulna 23, the outer surface of the ulna axle sleeve 32 can
Mating spherical surfaces are formed with the inner surface of through-hole 231, so that ulnar prosthesis 2 can be relative to artificial body of the humerus 1 while rotation
It can also be realized and be swung by mating spherical surfaces, the shear stress generated when the radius of human body is in rotation and swing is in ulna vacation
When on body 2, ulnar prosthesis 2 can generate the swing of adaptability by mating spherical surfaces.
The swing realized relative to artificial body of the humerus 1 by mating spherical surfaces by above-mentioned setting, ulnar prosthesis 2 keeps ulna false
The third through-hole 231 of body 2 is existing so as to effectively avoid without forming gap between the ulna axle sleeve of the prior art
The shaking problem for because of existing gap elbow joint prosthese being generated after displacement in technology, and then not only increase elbow joint
The stability of connection of the prosthese 100 after displacement, caused by also effectively avoiding elbow joint due to existing clearance issues
The phenomenon that abrasion of articular surface, occurs.
It is worth noting that, in the prior art, ulnar prosthesis at axle sleeve and the rotation connection of joint shaft pinning by setting
The gap of meter also may be present between axle sleeve and joint shaft pinning, at this point, can match the spherical surface of elbow joint prosthese 100 of the invention
Conjunction is formed between the inner surface of ulna axle sleeve 32 and the outer surface of connecting shaft 31, to form another elbow joint of the invention
The example scheme of prosthese 100, the program is identical as the effect that above scheme is realized, which is not described herein again.
In preferred embodiment shown in Fig. 5, ulna axle sleeve 32 may include sleeve body 321 and be formed in sleeve body
The first spherical surface 322 with the inner surface mating spherical surfaces of third through-hole 231 on 321 periphery wall surface, the first spherical surface 322 along axis
Cover the width that the width in the axial direction of ontology 321 can be greater than in the axial direction of third through-hole 231.By the setting, third can be improved
Swinging distance of the inner surface of through-hole 231 relative to the first spherical surface 322, so that ulnar prosthesis 2 can pass through third through-hole
231 realize the swing of greater angle with the mating spherical surfaces of sleeve body 321, so that 100 energy of elbow joint prosthese of the invention
The shear stress that enough radius for preferably adapting to human body are generated in rotation and swing, to improve the stability after its connection.
Preferably, ulna axle sleeve 32 may also include being connected on the both ends for being formed in sleeve body 321 with the first spherical surface 322
Two peripheries 323.By the setting, when third through-hole 231 inner surface relative to sleeve body 321 outer surface pendulum
When moving to maximum distance, i.e., when the end of third through-hole 231 is located at the marginal position of the first spherical surface 322, periphery 323 can have
The contact for avoiding head of ulna 23 with the surface of connecting shaft 31 of effect.
In a preferred embodiment, the inner surface of ulna axle sleeve 32 can also form ball with the outer surface of connecting shaft 31
Face cooperation, the inner surface of sleeve body 321 can be formed with the second spherical surface of the outer surface mating spherical surfaces of connecting shaft 31 (in figure not
Show), the outer surface of connecting shaft 31 can be formed with the third spherical surface (not shown) with 324 mating spherical surfaces of the second spherical surface, the
The width in the axial direction of sleeve body 321 of two spherical surfaces is smaller than the width in the axial direction of connecting shaft 31 of third spherical surface.
By the setting, ulnar prosthesis 2 can realize the mating spherical surfaces of second level, i.e. ruler by the outer surface of ulna axle sleeve 32 and connecting shaft 31
Bone prosthese 2 by the inner surface mating spherical surfaces of the outer surface of ulna axle sleeve 32 and third through-hole 231, then passes through ulna first again
The inner surface of axle sleeve 32 and the outer surface mating spherical surfaces of connecting shaft 31, it is opposite which can further improve ulnar prosthesis 2
In the swing angle of artificial body of the humerus 1.
In preferred embodiment as shown in Figure 2, rotating assembly 3 may also include two be respectively sleeved at connecting shaft 31 with
Humerus axle sleeve 33 between first through hole 141, between connecting shaft 31 and the second through-hole 151.As shown in connection with fig. 6, humerus axle sleeve 33
It may include the defining flange 312 of humerus sleeve body 331 with the one end for being formed in humerus sleeve body 311.Defining flange 312 can
Between first lug 14 and head of ulna 23, between the second lug 15 and head of ulna 23.Pass through the setting, humerus axle sleeve 33 1
Aspect can avoid connecting shaft 31 and first through hole 141, connecting shaft 31 and the second through-hole 151 by humerus sleeve body 331
Between contact, on the other hand, first lug 14 and head of ulna 23, the second lug can also be avoided by defining flange 312
Contact between 15 and head of ulna 23 is asked to wear caused by effectively avoiding due to the contact between metal material
Topic.
In preferred embodiment as shown in Figure 3, artificial body of the humerus 1 may also include to be in reverse to from the end of humerus neck 12 13
The flange 16 with humerus handle 11 at angle that the extending direction of first lug 14 and the second lug 15 extends.By the setting,
On the one hand, after artificial body of the humerus 1 is connect with the humerus of human body, can by flange 16 in humerus by the position at maximum stress
It is abutted with the outer wall of humerus, so as to effectively improve the ability to bear of the humerus at this, to play protection bone, bone cement
And the effect on the surface of elbow joint prosthese 100；On the other hand, flange 16 is abutted with the outer wall of humerus can also reduce humerus vacation
The risk for loosening and reversing of body 1, the stability after connection so as to further improve artificial body of the humerus 1.
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), metal magma spray coating (not shown) can be formed on the surface of ulnar prosthesis 2.Pass through the setting, titanium pearl sinter layer
The surface for the biggish metal grain structure having is capable of increasing the surface area of artificial body of the humerus 1, so as to effectively improve bone
Cement floor 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 metal magma
The surface for the lesser metal grain structure that spray coating has can effectively improve the fixed effect of bone cement, to improve
The immediate fixed and fixed for a long time effect of bone cement of the ulnar prosthesis 2 after displacement.
In a preferred embodiment, the shape of the cross section of humerus handle 11 can be configured to triangle, ulna handle 21
The shape of cross section can be configured to quadrangle.By the setting, it can make humerus handle 11 after the medullary cavity of humerus with human body is connect,
The rotation that the cross section of triangle can be improved its stablizing effect and avoid it in pulp cavity, so as to improve artificial body of the humerus 1
Connection after stability；Likewise, the cross section of quadrangle can make ruler after ulna handle 21 is connect with the ulna pulp cavity of human body
The stress of bone handle 21 more balances, and so as to improve the intensity of ulnar prosthesis 2 when in use, while ulna can also be avoided false
Rotation of the body 2 in ulna pulp cavity, and then improve stability and using effect after the connection of ulnar prosthesis 2.In addition, having
Said effect, also help adaptability design humerus handle 11 and ulna handle 21 fineness, for example, can be by humerus handle 11
Designed with ulna handle 21 it is relatively thin, to be suitable for medullary cavity of humerus and the lesser patient of ulna pulp cavity；It can also be by 11 He of humerus handle
Ulna handle 21 designs relatively thick, to be suitable for fracture or the trouble of the very big osteotomy amount of the needs such as tumour or the very big bone defect of presence
Person.
In preferred embodiment as shown in Figure 3, groove 121 may also be formed on the end 13 of humerus neck 12.Pass through
The setting, in elbow joint prosthese 100 when bending and stretching angle and reaching minimum, i.e. the opposite angle of rotation with artificial body of the humerus 1 of ulnar prosthesis 2
When degree is maximum, the junction that tissue (such as muscle) snaps fit onto artificial body of the humerus 1 Yu ulnar prosthesis 2, i.e. elbow joint can avoid
At the articular surface of prosthese 100, to have met the motion profile of tissue, to effectively reduce the knot of the elbow joint of human body
Structure.
In a preferred embodiment, in situation of the 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 humerus handle 11 of ulna handle 21 can be 10 ° to 15 °, so that of the invention
Elbow joint prosthese 100 can satisfy the elbow joint carrying angle of human body after displacement, to realize the elbow of height simulated humanbody
The effect in 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 ulna
Long axis is consistent.The extended line of upper limb arm axle and preceding arm axle is crossed to form an angle opened outward, and about 165 ° to 170 °, supplementary angle
It is 10 ° to 15 °, i.e., the folder of the length direction of the length direction and humerus handle 11 of 100 ulna handle 21 of elbow joint prosthese of the invention
Angular region.
In preferred embodiment as shown in Figure 2, connecting shaft 31 may include being socketed in ulna axle sleeve 32 and humerus axle sleeve
311 are followed closely outside pin shaft in 33, and follow closely 312 with following closely in the pin shaft that 311 are detachably connected outside pin shaft.Referring to figs. 7 and 8, it sells
It can be hollow tubular structure that 311 are followed closely outside axis, and 311 one end is followed closely outside pin shaft and can be equipped with first annular flange 314, nail 312 in pin shaft
The other end for being arranged to the nail 311 outside pin shaft is inserted into inside it, and one end of nail 312 is equipped with the second annular flange 315, pin in pin shaft
The other end of nail 312 is equipped with closure 316 in axis.By the setting, it may make that nail 312 passes through with nail 311 outside pin shaft in pin shaft
Closure 316 is simply locked and is dismantled, and so as to guarantee the accuracy of artificial body of the humerus 1 and the installation of ulnar prosthesis 2, improves hand
Art efficiency, meanwhile, also improve interchangeability of the elbow joint prosthese 100 in revision procedure.
It should be noted that unless otherwise indicated, technical term or scientific term used in this application should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.
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, the artificial body of the humerus include humerus handle and the humerus neck that is connected with the humerus handle, the end of the humerus neck
It is respectively formed on the opposite two sides in portion along the first lug extended of length direction far from the humerus handle and second convex
Ear is provided with first through hole in the first lug, is provided with the second through-hole on second lug；
Ulnar prosthesis, the ulnar prosthesis include the ulna handle, ulna neck and head of ulna being sequentially connected, and are set on the head of ulna
It is equipped with the third through-hole for extending transversely through the head of ulna；
Rotating assembly, the rotating assembly include for sequentially passing through the first through hole, the third through-hole and described
The connecting shaft of two through-holes, and the ruler being set on the region between the first lug and the second lug of the connecting shaft
Axis of bone set,
Wherein, the inner surface of the outer surface of the ulna axle sleeve and the third through-hole forms mating spherical surfaces, so that the ulna
Prosthese can be rotated and be swung relative to the artificial body of the humerus.
2. elbow joint prosthese according to claim 1, which is characterized in that the ulna axle sleeve includes sleeve body and formation
The first spherical surface with the inner surface mating spherical surfaces of the third through-hole on the periphery wall surface of the sleeve body, described first
The width in the axial direction of the sleeve body of spherical surface is greater than the width in the axial direction of the third through-hole.
3. elbow joint prosthese according to claim 2, which is characterized in that the ulna axle sleeve further includes being formed in the axis
Cover two peripheries being connected with first spherical surface on the both ends of ontology.
4. elbow joint prosthese according to claim 3, which is characterized in that the inner surface of the ulna axle sleeve also with the company
The outer surface of spindle forms mating spherical surfaces, and the inner surface of the sleeve body is formed with matches with the outer surface spherical surface of the connecting shaft
The second spherical surface closed, the outer surface of the connecting shaft are formed with the third spherical surface with the second spherical surface mating spherical surfaces, and described the
The width in the axial direction of the sleeve body of two spherical surfaces is less than the third spherical surface in the axial direction of the connecting shaft
Width.
5. elbow joint prosthese according to any one of claim 1 to 4, which is characterized in that the rotating assembly further includes
Two be respectively sleeved between the connecting shaft and the first through hole, the humerus between the connecting shaft and second through-hole
Axle sleeve.
6. elbow joint prosthese according to any one of claim 1 to 4, which is characterized in that the artificial body of the humerus further includes
The extending direction for being in reverse to the first lug and second lug from the end of the humerus neck is extending with the upper arm
Bone handle at angle flange.
7. elbow joint prosthese according to any one of claim 1 to 4, which is characterized in that the surface of the artificial body of the humerus
On be formed with titanium pearl sinter layer, metal magma spray coating is formed on the surface of the ulnar prosthesis.
8. elbow joint prosthese according to any one of claim 1 to 4, which is characterized in that the cross section of the humerus handle
Shape design be triangle, the shape design of the cross section of the ulna handle is quadrangle.
9. elbow joint prosthese according to any one of claim 1 to 4, which is characterized in that on the end of the humerus neck
It is also formed with groove.
10. elbow joint prosthese according to any one of claim 1 to 4, which is characterized in that opposite in the ulnar prosthesis
In the maximum situation of rotational angle of the artificial body of the humerus, the length side of the length direction of the ulna handle and the humerus handle
To angular range be 10 ° to 15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910404719.4A CN110192935A (en) | 2019-05-10 | 2019-05-10 | Elbow joint prosthese |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910404719.4A CN110192935A (en) | 2019-05-10 | 2019-05-10 | Elbow joint prosthese |
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| CN110192935A true CN110192935A (en) | 2019-09-03 |
Family
ID=67751466
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910404719.4A Pending CN110192935A (en) | 2019-05-10 | 2019-05-10 | Elbow joint prosthese |
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| CN (1) | CN110192935A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111616843A (en) * | 2020-06-30 | 2020-09-04 | 河北春立航诺新材料科技有限公司 | Elbow joint replacement prosthesis |
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