CN109567987A - Single condyle knee-joint prosthesis - Google Patents
Single condyle knee-joint prosthesis Download PDFInfo
- Publication number
- CN109567987A CN109567987A CN201910105017.6A CN201910105017A CN109567987A CN 109567987 A CN109567987 A CN 109567987A CN 201910105017 A CN201910105017 A CN 201910105017A CN 109567987 A CN109567987 A CN 109567987A
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- CN
- China
- Prior art keywords
- position limiting
- support portion
- shin bone
- limiting structure
- interconnecting piece
- 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
- 210000000629 knee joint Anatomy 0.000 title claims abstract description 49
- 210000002303 tibia Anatomy 0.000 claims abstract description 80
- 238000000034 method Methods 0.000 description 5
- 210000000689 upper leg Anatomy 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 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
- A61F2/3859—Femoral 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
- A61F2/3886—Joints for elbows or knees for stabilising knees against anterior or lateral dislocations
-
- 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
- A61F2/389—Tibial 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30518—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts
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 present invention provides a kind of single condyle knee-joint prosthesis.Single condyle knee-joint prosthesis includes: tibial plateau prosthesis assembly, including shin bone interconnecting piece and the support portion being arranged on shin bone interconnecting piece；Lateral femoral condyle prosthesis is arranged on support portion, and support portion has the arc chute cooperated with lateral femoral condyle prosthesis towards the surface of lateral femoral condyle prosthesis；Limit assembly is arranged on shin bone interconnecting piece, and limit assembly includes multiple position limiting structures, and at least two position limiting structures are located at the forward and backward side of support portion, to support portion limit stops；Wherein, at least one position limiting structure at least two position limiting structures and shin bone interconnecting piece are detachably connected.The problem of being easy abjection present invention efficiently solves the support portion of single condyle knee-joint prosthesis in the prior art.
Description
Technical field
The present invention relates to orthopaedics the field of medical instrument technology, in particular to a kind of single condyle knee-joint prosthesis.
Background technique
Currently, overhauling probability there are 4.6% after patient carries out knee joint single condyle replacement operation.Wherein, revision procedure
In since the probability overhauled of support portion (polyethylene liner) dislocation is 33%, i.e., single condyle knee-joint prosthesis in the prior art
In support portion (polyethylene liner) dislocation easily occurs and influences the stability of single condyle knee-joint prosthesis, reduce single condyle knee joint
The use reliability of prosthese.
Summary of the invention
The main purpose of the present invention is to provide a kind of single condyle knee-joint prosthesis, are closed with solving single condyle knee in the prior art
The problem of support portion of section prosthese is easy abjection.
To achieve the goals above, the present invention provides a kind of single condyle knee-joint prosthesis, comprising: tibial plateau prosthese group
Part, including shin bone interconnecting piece and the support portion being arranged on shin bone interconnecting piece；Lateral femoral condyle prosthesis is arranged on support portion, support
Portion has the arc chute cooperated with lateral femoral condyle prosthesis towards the surface of lateral femoral condyle prosthesis；Limit assembly, setting are connected in shin bone
In portion, limit assembly includes multiple position limiting structures, and at least two position limiting structures are located at the forward and backward side of support portion, to branch
Support part limit stops；Wherein, at least one position limiting structure at least two position limiting structures removably connects with shin bone interconnecting piece
It connects.
Further, at least two position limiting structures include the first position limiting structure and the second position limiting structure, the first position limiting structure
It is detachably connected with shin bone interconnecting piece, single condyle knee-joint prosthesis further include: fastener, the first position limiting structure by fastener with
Shin bone interconnecting piece and/or shin bone connection.
Further, the first position limiting structure includes the first protrusion, has the first recess portion on support portion, and the first protrusion protrudes into the
In one recess portion with the first recesses fit so that the first position limiting structure is to support portion limit stops.
Further, shin bone interconnecting piece has via hole, the first position limiting structure further include: the first noumenon, the first protrusion and the
The connection of one ontology and the one end for being located at the first noumenon, the first noumenon are threaded through in via hole, are connected so that the first protrusion is located at shin bone
Towards the side of support portion, the other end of the first noumenon connects after there is the through-hole passed through for fastener, fastener to pass through through-hole in portion
It connects on shin bone.
Further, have limiting stand terrace, limiting stand terrace and shin bone interconnecting piece towards support portion on the first noumenon
Surface limit stops, so that the first protrusion is correspondingly arranged with the first recess portion.
Further, the second position limiting structure includes the second protrusion, and support portion has the second recess portion, and the second protrusion protrudes into second
In recess portion with the second recesses fit so that the second position limiting structure is to support portion limit stops.
Further, the second position limiting structure further includes the second ontology connecting with the second protrusion, and second projects through second
Ontology is connect with shin bone interconnecting piece；Wherein, the second position limiting structure is made with shin bone interconnecting piece of processing technology is integrally formed.
Further, the first recess portion is the first groove-like structure and/or the second recess portion is the second groove-like structure.
Further, the first protrusion has the first arcwall face towards the side of support portion, and the first groove-like structure is and first
Compatible first arc groove of arcwall face.
Further, the second protrusion has the second arcwall face towards the side of support portion, and the second groove-like structure is and second
Compatible second arc groove of arcwall face.
Further, limit assembly further includes third position limiting structure, and third position limiting structure is located at the side of support portion, and first
Position limiting structure and the second position limiting structure are located at third position limiting structure towards the side of support portion.
It applies the technical scheme of the present invention, during shin bone is moved relative to femur, lateral femoral condyle prosthesis is along branch
The surface of support part is slided, to meet knee joint normal function.In above process, at least two position limiting structures are located at support
The two sides in portion with to support portion limit stops, and then prevent support portion from deviating from from shin bone interconnecting piece and influencing single condyle knee joint
The use reliability of prosthese, and then solve the problems, such as that the support portion of single condyle knee-joint prosthesis in the prior art is easy abjection,
Improve the use reliability of single condyle knee-joint prosthesis.Wherein, at least one position limiting structure at least two position limiting structures with
Shin bone interconnecting piece is detachably connected, complete lateral femoral condyle prosthesis installation after, by with shin bone interconnecting piece be detachably connected to
A few position limiting structure is mounted on shin bone interconnecting piece, to carry out limit stops to support portion.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic perspective view of the embodiment of single condyle knee-joint prosthesis according to the present invention；
Fig. 2 shows the main views of the shin bone interconnecting piece of single condyle knee-joint prosthesis in Fig. 1；
Fig. 3 shows the top view of the shin bone interconnecting piece in Fig. 2；
Fig. 4 shows the main view of the support portion of single condyle knee-joint prosthesis in Fig. 1；
Fig. 5 shows the top view of the support portion in Fig. 4；
Fig. 6 shows the shin bone interconnecting piece in Fig. 2 and the main view after the assembly of the first position limiting structure；
Fig. 7 shows the schematic perspective view of the first position limiting structure of single condyle knee-joint prosthesis in Fig. 1；And
Fig. 8 shows the schematic perspective view of another angle of the first position limiting structure in Fig. 7.
Wherein, the above drawings include the following reference numerals:
10, tibial plateau prosthesis assembly；11, shin bone interconnecting piece；111, via hole；12, support portion；121, the first recess portion；
122, the second recess portion；123, arc chute；20, lateral femoral condyle prosthesis；30, limit assembly；31, the first position limiting structure；311, first
Protrusion；312, the first noumenon；312a, limiting stand terrace；32, the second position limiting structure；321, the second protrusion；322, the second ontology；
33, third position limiting structure；40, fastener.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
It should be pointed out that unless otherwise specified, all technical and scientific terms used in this application have and the application
The normally understood identical meanings of person of an ordinary skill in the technical field.
In the present invention, in the absence of explanation to the contrary, the noun of locality used is usually directed to attached drawing as " upper and lower "
Shown in for direction, or on vertical, vertical or gravity direction；Similarly, it for ease of understanding and retouches
It states, " left and right " is usually for shown in the drawings left and right；" inside and outside " refers to the inside and outside of the profile relative to each component itself,
But the above-mentioned noun of locality is not intended to restrict the invention.
In order to solve the problems, such as that the support portion of single condyle knee-joint prosthesis in the prior art is easy abjection, this application provides
A kind of list condyle knee-joint prosthesis.
As shown in Figure 1 and Figure 5, single condyle knee-joint prosthesis includes tibial plateau prosthesis assembly 10, lateral femoral condyle prosthesis 20 and limit
Hyte part 30.Wherein, tibial plateau prosthesis assembly 10 includes shin bone interconnecting piece 11 and the support being arranged on shin bone interconnecting piece 11
Portion 12.Lateral femoral condyle prosthesis 20 is arranged on support portion 12, and the surface of support portion 12 towards lateral femoral condyle prosthesis 20 has and condyle of femur
The arc chute 123 that prosthese 20 cooperates.Limit assembly 30 is arranged on shin bone interconnecting piece 11, and limit assembly 30 includes three limits
Structure, two position limiting structures are located at the forward and backward side of support portion 12, to 12 limit stops of support portion；Wherein, two limits
A position limiting structure and shin bone interconnecting piece 11 in structure is detachably connected.
Using the technical solution of the present embodiment, during shin bone is moved relative to femur, lateral femoral condyle prosthesis 20
It is slided along the surface of support portion 12, to meet knee joint normal function.In above process, two position limiting structures are located at branch
The two sides of support part 12 with to 12 limit stops of support portion, and then prevent support portion 12 from deviating from from shin bone interconnecting piece 11 and influencing
The use reliability of single condyle knee-joint prosthesis, and then the support portion for solving single condyle knee-joint prosthesis in the prior art is easy to take off
Out the problem of, improves the use reliability of single condyle knee-joint prosthesis.Wherein, a position limiting structure in two position limiting structures with
Shin bone interconnecting piece 11 is detachably connected, after the installation for completing lateral femoral condyle prosthesis 20, will detachably connect with shin bone interconnecting piece 11
The position limiting structure connect is mounted on shin bone interconnecting piece 11, to carry out limit stops to support portion 12.
It should be noted that the number of position limiting structure is without being limited thereto.Optionally, limit assembly 30 include four or five or
Six position limiting structures.In this way, above-mentioned setting so that limit assembly 30 to the position-limiting action of support portion 12 more preferably, further prevent propping up
Support part 12 deviates from and influences the use reliability of single condyle knee-joint prosthesis from shin bone interconnecting piece 11, reduces single condyle knee-joint prosthesis
Overhaul probability.
In the present embodiment, the forward and backward side of support portion 12 refers to: along the glide direction of support portion 12, two position limiting structures
It is located at the forward and backward side of support portion 12.
As shown in Fig. 1 to Fig. 3 and Fig. 6, two position limiting structures include the first position limiting structure 31 and the second position limiting structure 32, the
One position limiting structure 31 and shin bone interconnecting piece 11 are detachably connected, and single condyle knee-joint prosthesis further includes fastener 40.Wherein, first
Position limiting structure 31 is connect by fastener 40 with shin bone.In this way, when installing support portion 12 and lateral femoral condyle prosthesis 20, the first limit
Structure 31 and shin bone interconnecting piece 11 are in discrete state, when portion 12 to be supported is located on support portion 12, by fastener 40 by the
One position limiting structure 31 is assembled together with shin bone interconnecting piece 11, to prevent the first position limiting structure 31 from deviating from from shin bone interconnecting piece 11
And influence the use reliability of single condyle knee-joint prosthesis.
In the present embodiment, the first position limiting structure 31 is located at the front side of support portion 12.
Optionally, fastener 40 is titanium nail.
It should be noted that the connection type of fastener 40 is without being limited thereto.Optionally, fastener 40 and shin bone interconnecting piece 11
Connection prevents the two from occurring de- so that first position limiting structure 31 to be fixedly mounted on shin bone interconnecting piece 11 by fastener 40
From and influence the first position limiting structure 31 and the limit stops of support portion 12 acted on.
Optionally, fastener 40 is all connected with shin bone interconnecting piece 11 and shin bone.In this way, above-mentioned setting can further increase
The connective stability of first position limiting structure 31 and shin bone interconnecting piece 11, to promote the use reliability of single condyle knee-joint prosthesis.
As shown in Fig. 1, Fig. 4 and Fig. 5, the first position limiting structure 31 includes the first protrusion 311, is had on support portion 12 first recessed
Portion 121, the first protrusion 311 are protruded into cooperate with the first recess portion 121 in the first recess portion 121, so that 31 pairs of branch of the first position limiting structure
12 limit stops of support part.In this way, the first protrusion 311 and the first recess portion 121 cooperate, to realize the first position limiting structure 31 to support portion
12 limit stops cause support portion 12 from shin to prevent support portion 12 from tilting occurs in the side with the first recess portion 121
Deviate from bone interconnecting piece 11.Meanwhile the structure of above structure is simple, is easily worked, realizes.
Specifically, the present embodiment is based on clinical achievable basic demand, and the first limit is designed in the way of dismountable
Structure 31, the first position limiting structure 31 not only realizes the simple translation limit of support portion 12, when forward and backward tilting occurs for support portion 12
When, because limit height is enough, and there is the first recess portion 121 cooperated corresponding to its, so more can sufficiently, effectively play limit
Bit function.
In the other embodiments being not shown in the accompanying drawings, the first position limiting structure includes third recess portion, is had on support portion
Third protrusion, third protrusion protrude into third recess portion with third recesses fit so that the first position limiting structure limits support portion
Backstop.In this way, third protrusion and third recesses fit, to realize the first position limiting structure to the limit stops of support portion, to prevent
Support portion occurs tilting in the side with third protrusion and support portion is caused to be deviate from from shin bone interconnecting piece.Meanwhile above-mentioned knot
The structure of structure is simple, is easily worked, realizes.
As shown in figure 3, shin bone interconnecting piece 11 has via hole 111, the first position limiting structure 31 further includes the first noumenon 312.Its
In, the first protrusion 311 connect and is located at one end of the first noumenon 312 with the first noumenon 312, and the first noumenon 312 is threaded through via hole
In 111, so that the first protrusion 311 is located at shin bone interconnecting piece 11 towards the side of support portion 12, the other end of the first noumenon 312 has
It is connected on shin bone after thering is the through-hole passed through for fastener 40, fastener 40 to pass through through-hole.The structure of above structure is simple, is easy
Processing is realized.
Specifically, after portion 12 to be supported is placed on support portion 12, the first noumenon 312 is passed through into via hole 111, so that first
Protrusion 311 is arranged towards support portion 12.Later, fastener 40 is passed through into the through-hole on the first noumenon 312 and is tightened on shin bone,
The first position limiting structure 31 to be mounted on shin bone interconnecting piece 11.
As shown in fig. 7, having limiting stand terrace 312a, limiting stand terrace 312a and shin bone interconnecting piece on the first noumenon 312
11 towards support portion 12 surface limit stops so that the first protrusion 311 is correspondingly arranged with the first recess portion 121.In this way, first
During ontology 312 passes through via hole 111, limiting stand terrace 312a and shin bone interconnecting piece 11 on the first noumenon 312 are set
It abuts, to realize the positioning of the first protrusion 311, and then guarantees that the first protrusion 311 can be limited with the first recess portion 121 and cooperate, into
And guarantee the limit reliability of the first position limiting structure 31.
As shown in Figures 1 to 4, the second position limiting structure 32 includes the second protrusion 321, and support portion 12 has the second recess portion 122,
Second protrusion 321 is protruded into cooperate with the second recess portion 122 in the second recess portion 122, so that the second position limiting structure 32 is to support portion 12
Limit stops.In this way, the second protrusion 321 and the second recess portion 122 cooperate, to realize the second position limiting structure 32 to the limit of support portion 12
Position backstop causes support portion 12 to connect from shin bone to prevent support portion 12 from tilting occurs in the side with the second recess portion 122
Deviate from portion 11.Meanwhile the structure of above structure is simple, is easily worked, realizes.
In the other embodiments being not shown in the accompanying drawings, the second position limiting structure includes the 4th recess portion, is had on support portion
4th protrusion, the 4th protrusion protrude into the 4th recess portion with the 4th recesses fit so that the second position limiting structure limits support portion
Backstop.In this way, the 4th protrusion and the 4th recesses fit, to realize the second position limiting structure to the limit stops of support portion, to prevent
Support portion occurs tilting in the side with the 4th protrusion and support portion is caused to be deviate from from shin bone interconnecting piece.Meanwhile above-mentioned knot
The structure of structure is simple, is easily worked, realizes.
As shown in Fig. 2, the second position limiting structure 32 further includes the second ontology 322 connecting with the second protrusion 321, the second protrusion
321 are connect by the second ontology 322 with shin bone interconnecting piece 11.Wherein, the second position limiting structure 32 uses one with shin bone interconnecting piece 11
Body formed processing technology is made.In this way, above-mentioned setting guarantees that the second protrusion 321 can be arranged it with the second recess portion 122, in turn
When guaranteeing the second protrusion 321 and the second 122 limit stops of recess portion, it can prevent support portion 12 from occurring to tilt and lead to support portion 12
Deviate from from shin bone interconnecting piece 11.In addition, the structure of above structure is simple, it is easily worked, realizes.
In the present embodiment, the first recess portion 121 is the first groove-like structure, and the second recess portion 122 is the second groove-like structure.It is above-mentioned
The structure of structure is simple, is easily worked, realizes, reduces the processing cost of support portion 12.
In the present embodiment, the first groove-like structure extends to the side of support portion 12, and the second groove-like structure extends to support
The side in portion 12.In this way, on the one hand above-mentioned setting is more easier the processing of support portion 12, is easy, difficulty of processing is reduced；
On the other hand guarantee that the first protrusion can extend into the first groove-like structure, the second protrusion can extend into the second groove-like structure, into
And limit assembly 30 is improved to the limit reliability of support portion 12.
As shown in Figure 7 and Figure 8, the first protrusion 311 has the first arcwall face, the first channel-shaped knot towards the side of support portion 12
Structure is the first arc groove compatible with the first arcwall face.In this way, after the first protrusion 311 protrudes into the first groove-like structure, the
The inner surface of one protrusion 311 and the first groove-like structure, which can be realized, to be mutually twisted, to prevent support portion 12 to have the first channel-shaped knot
The side of structure occurs to tilt and deviate from from shin bone interconnecting piece 11.
As depicted in figs. 1 and 2, the second protrusion 321 has the second arcwall face, the second channel-shaped knot towards the side of support portion 12
Structure is the second arc groove compatible with the second arcwall face.In this way, after the second protrusion 321 protrudes into the second groove-like structure, the
The inner surface of two protrusions 321 and the second groove-like structure, which can be realized, to be mutually twisted, to prevent support portion 12 to have the second channel-shaped knot
The side of structure occurs to tilt and deviate from from shin bone interconnecting piece 11.
As shown in Figure 1 to Figure 3, limit assembly 30 further includes third position limiting structure 33, and third position limiting structure 33 is located at support
The side in portion 12, the first position limiting structure 31 and the second position limiting structure 32 are located at third position limiting structure 33 towards the one of support portion 12
Side.In this way, third position limiting structure 33 is located at the side of support portion 12, limit stops are carried out with the side to support portion 12, to protect
Card support portion 12 moves in shin bone interconnecting piece 11.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements:
During shin bone is moved relative to femur, lateral femoral condyle prosthesis is slided along the surface of support portion, to meet
Knee joint normal function.In above process, at least two position limiting structures are located at the two sides of support portion, to limit support portion
Position backstop, and then prevent support portion from deviating from and influencing the use reliability of single condyle knee-joint prosthesis from shin bone interconnecting piece, in turn
It solves the problems, such as that the support portion of single condyle knee-joint prosthesis in the prior art is easy abjection, improves single condyle knee-joint prosthesis
Use reliability.Wherein, at least one position limiting structure at least two position limiting structures and shin bone interconnecting piece are detachably connected,
After the installation for completing lateral femoral condyle prosthesis, at least one position limiting structure being detachably connected with shin bone interconnecting piece is mounted on shin bone
On interconnecting piece, to carry out limit stops to support portion.
Obviously, above-mentioned the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.
Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts all
Other embodiments should fall within the scope of the present invention.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, work, device, component and/or their combination.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so that presently filed embodiment described herein can be in addition to illustrating herein
Or the sequence other than those of description is implemented.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of list condyle knee-joint prosthesis characterized by comprising
Tibial plateau prosthesis assembly (10), including shin bone interconnecting piece (11) and the support being arranged on the shin bone interconnecting piece (11)
Portion (12)；
Lateral femoral condyle prosthesis (20), is arranged on the support portion (12), and the support portion (12) is towards the lateral femoral condyle prosthesis
(20) surface has the arc chute (123) cooperated with the lateral femoral condyle prosthesis (20)；
Limit assembly (30) is arranged on the shin bone interconnecting piece (11), and the limit assembly (30) includes multiple position limiting structures,
At least two position limiting structures are located at the forward and backward side of the support portion (12), to stop to the support portion (12) limit
Gear；Wherein, position limiting structure described at least one of at least two described position limiting structures and the shin bone interconnecting piece (11) are removable
It connects with unloading.
2. list condyle knee-joint prosthesis according to claim 1, which is characterized in that at least two position limiting structures include the
One position limiting structure (31) and the second position limiting structure (32), first position limiting structure (31) and the shin bone interconnecting piece (11) are removable
It connects with unloading, the list condyle knee-joint prosthesis further include:
Fastener (40), first position limiting structure (31) by the fastener (40) and the shin bone interconnecting piece (11) and/
Or shin bone connection.
3. list condyle knee-joint prosthesis according to claim 2, which is characterized in that first position limiting structure (31) includes the
One raised (311) have the first recess portion (121) on the support portion (12), and it is recessed that described first raised (311) protrude into described first
To cooperate with first recess portion (121) in portion (121), so that first position limiting structure (31) limits the support portion (12)
Position backstop.
4. list condyle knee-joint prosthesis according to claim 3, which is characterized in that the shin bone interconnecting piece (11) has via hole
(111), first position limiting structure (31) further include:
The first noumenon (312), described first raised (311) connect with the first noumenon (312) and are located at the first noumenon
(312) one end, the first noumenon (312) are threaded through in the via hole (111), so that described first raised (311) are located at
The shin bone interconnecting piece (11) is towards the side of the support portion (12), and the other end of the first noumenon (312) is with for institute
The through-hole that fastener (40) passes through is stated, the fastener (40) is connected on the shin bone after passing through the through-hole.
5. list condyle knee-joint prosthesis according to claim 4, which is characterized in that have limit on the first noumenon (312)
The table of position step surface (312a), the limiting stand terrace (312a) and the shin bone interconnecting piece (11) towards the support portion (12)
Face limit stops, so that described first raised (311) are correspondingly arranged with first recess portion (121).
6. list condyle knee-joint prosthesis according to claim 3, which is characterized in that second position limiting structure (32) includes the
Two raised (321), the support portion (12) have the second recess portion (122), and second recess portion is protruded into described second raised (321)
(122) to cooperate with second recess portion (122) in, so that second position limiting structure (32) limits the support portion (12)
Backstop.
7. list condyle knee-joint prosthesis according to claim 6, which is characterized in that second position limiting structure (32) further includes
The second ontology (322) connecting with described second raised (321), described second raised (321) pass through second ontology (322)
It is connect with the shin bone interconnecting piece (11)；Wherein, second position limiting structure (32) and the shin bone interconnecting piece (11) use one
Body formed processing technology is made.
8. list condyle knee-joint prosthesis according to claim 6, which is characterized in that first recess portion (121) is the first slot
Shape structure and/or second recess portion (122) are the second groove-like structure.
9. list condyle knee-joint prosthesis according to claim 8, which is characterized in that described first raised (311) are described in
The side of support portion (12) has the first arcwall face, and first groove-like structure is and first arcwall face compatible first
Arc groove.
10. list condyle knee-joint prosthesis according to claim 8, which is characterized in that described second raised (321) are described in
The side of support portion (12) has the second arcwall face, and second groove-like structure is and second arcwall face compatible second
Arc groove.
11. list condyle knee-joint prosthesis according to claim 2, which is characterized in that the limit assembly (30) further includes the
Three position limiting structures (33), the third position limiting structure (33) are located at the side of the support portion (12), first position limiting structure
(31) and second position limiting structure (32) is located at side of the third position limiting structure (33) towards the support portion (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910105017.6A CN109567987A (en) | 2019-02-01 | 2019-02-01 | Single condyle knee-joint prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910105017.6A CN109567987A (en) | 2019-02-01 | 2019-02-01 | Single condyle knee-joint prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109567987A true CN109567987A (en) | 2019-04-05 |
Family
ID=65918703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910105017.6A Pending CN109567987A (en) | 2019-02-01 | 2019-02-01 | Single condyle knee-joint prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109567987A (en) |
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| CN110538010A (en) * | 2019-09-17 | 2019-12-06 | 北京爱康宜诚医疗器材有限公司 | Unicondylar knee joint prosthesis |
| CN112674913A (en) * | 2021-01-14 | 2021-04-20 | 福州大学 | Unicondylar knee joint prosthesis capable of preventing looseness and working method thereof |
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