CN209611429U - Knee-joint prosthesis - Google Patents
Knee-joint prosthesis Download PDFInfo
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- CN209611429U CN209611429U CN201822221158.8U CN201822221158U CN209611429U CN 209611429 U CN209611429 U CN 209611429U CN 201822221158 U CN201822221158 U CN 201822221158U CN 209611429 U CN209611429 U CN 209611429U
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- knee
- joint prosthesis
- condyle
- tibial insert
- tibial
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Abstract
The utility model provides a kind of knee-joint prosthesis, comprising: tibial plateau；Pedestal, pedestal are arranged on tibial plateau；Tibial insert, tibial insert are set on the base, and in the lateral surfaces for being parallel to tibial plateau pivotably；Condyle of femur, condyle of femur are contacted with tibial insert.The utility model solves the problems, such as that the relative position between tibial insert and condyle of femur in the prior art is fixed.
Description
Technical field
The utility model relates to the field of medical instrument technology, in particular to a kind of knee-joint prosthesis.
Background technique
Knee joint is the important weight-bearing joints of lower limb, and knee joint degenerative osteoarthropathy is the common disease of the elderly, needle
It to serious diseases of knee joint, needs to select knee replacements as treatment means, to improve knee joint steadily in the long term
Function.Knee-joint prosthesis purely mechanic at present is widely used as the prosthese in knee replacements.
But purely mechanic knee-joint prosthesis in the prior art, the relative position between tibial insert and condyle of femur are fixed
, result in this way knee-joint prosthesis can not according to the practical anatomy and knee-joint prosthesis of patient it is in use it is practical by
Power situation is adjusted.
Utility model content
The main purpose of the utility model is to provide a kind of knee-joint prosthesis, to solve tibial insert in the prior art
The problem that relative position between condyle of femur is fixed.
To achieve the goals above, the utility model provides a kind of knee-joint prosthesis, comprising: tibial plateau；Pedestal, bottom
Seat is arranged on tibial plateau；Tibial insert, tibial insert are set on the base, and in the lateral surfaces for being parallel to tibial plateau
It is interior pivotable；Condyle of femur, condyle of femur are contacted with tibial insert.
Further, knee-joint prosthesis further include: pressure sensor, pressure sensor are arranged on tibial insert, are used for
The pressure that detection tibial insert is subject in condyle of femur rotation process；Pressure analyzer, pressure analyzer are set on the base simultaneously
It is electrically connected with pressure sensor, for obtaining pressure and being compared analysis with setting pressure, according to the result of comparative analysis
It controls tibial insert and rotates set angle.
Further, knee-joint prosthesis further includes driving assembly, and pressure analyzer controls tibial insert by driving assembly
Rotate set angle；Wherein, driving assembly includes: actuator, and actuator is set on the base, actuator and pressure analyzer electricity
Connection；First gear structure, first gear structure are set on the output shaft of actuator；Second gear structure, second gear knot
The bottom of tibial insert is arranged in structure, and second gear structure is engaged with first gear structure.
Further, first gear structure and second gear structure are face gear.
Further, knee-joint prosthesis further include: enclosing part, enclosing part are connected between pedestal and tibial insert, and with
Pedestal and tibial insert surround confined space, and actuator, first gear structure, second gear structure and pressure analyzer are respectively positioned on
In confined space.
Further, enclosing part is fabricated from a flexible material.
Further, pressure analyzer includes bluetooth module, and pressure analyzer passes through bluetooth module for the knot of comparative analysis
Fruit is sent out.
Further, knee-joint prosthesis further includes power supply unit, and power supply unit is arranged on tibial plateau, for being pressure
Sensor, pressure analyzer or actuator power supply.
Further, condyle of femur includes spaced entocondyle and external condyle, and pedestal and tibial insert are two, and two
A pedestal is arranged on tibial plateau at intervals, and two tibial inserts are arranged in correspondingly on two pedestals, entocondyle
It is separately positioned on two tibial inserts with external condyle.
Further, the upper surface of tibial insert is curved surface compatible with condyle of femur.
Using the technical solution of the utility model, pedestal is provided on tibial plateau, tibial insert is set on the base,
And in the lateral surfaces for being parallel to tibial plateau pivotably.In this way, the relative position between tibial insert and condyle of femur is can
It, can be according to the practical anatomy and knee-joint prosthesis of patient actual loading situation in use come to shin bone with adjusting
Relative position between gasket and condyle of femur is adjusted, and so as to improve the force environment of knee-joint prosthesis, it is false to promote knee joint
The service life of body.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
In the accompanying drawings:
Fig. 1 shows a kind of structural schematic diagram of the knee-joint prosthesis of alternative embodiment according to the present utility model；
Fig. 2 shows the partial structure diagrams of the knee-joint prosthesis in Fig. 1；
Fig. 3 shows the partial structure diagram of the driving assembly of the knee-joint prosthesis in Fig. 1；
Fig. 4 shows the driving assembly of the knee-joint prosthesis in Fig. 1 and the working principle diagram of power supply unit.
Wherein, the above drawings include the following reference numerals:
10, tibial plateau；20, pedestal；30, tibial insert；40, condyle of femur；41, entocondyle；42, external condyle；43, femur
Condyle ontology；50, pressure analyzer；60, driving assembly；61, output shaft；62, first gear structure；70, enclosing part；81, it generates electricity
Device；811, input shaft；812, the first tooth-shape structure；813, the second tooth-shape structure；814, connecting shaft；82, electric storage device；83,
Output lead；84, connecting line.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole realities
Apply example.Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as practical new to this
Type and its application or any restrictions used.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, is fallen within the protection scope of the utility model.
In order to solve the problems, such as that the relative position between tibial insert and condyle of femur in the prior art is fixed, this is practical new
Type provides a kind of knee-joint prosthesis.
As shown in Figures 1 to 4, knee-joint prosthesis includes tibial plateau 10, pedestal 20, tibial insert 30 and condyle of femur 40,
Pedestal 20 is arranged on tibial plateau 10, and tibial insert 30 is arranged on pedestal 20, and in the transverse direction for being parallel to tibial plateau 10
In surface pivotably, condyle of femur 40 is contacted with tibial insert 30.
In this application, pedestal 20 is provided on tibial plateau 10, tibial insert 30 is arranged on pedestal 20, and flat
Row is in pivotable in the lateral surfaces of tibial plateau 10.In this way, the relative position between tibial insert 30 and condyle of femur 40 is can
It, can be according to the practical anatomy and knee-joint prosthesis of patient actual loading situation in use come to shin bone with adjusting
Relative position between gasket 30 and condyle of femur 40 is adjusted, and so as to improve the force environment of knee-joint prosthesis, promotes knee and closes
Save the service life of prosthese.
As shown in Figures 2 to 4, knee-joint prosthesis further includes pressure sensor and pressure analyzer 50, and pressure sensor is set
It sets on tibial insert 30, the pressure being subject in 40 rotation process of condyle of femur for detecting tibial insert 30, pressure analyzer
50 are arranged on pedestal 20 and are electrically connected with pressure sensor, for obtaining pressure and being compared analysis with setting pressure, with
Tibial insert 30, which is controlled, according to the result of comparative analysis rotates set angle.In this way, knee-joint prosthesis can be according to condyle of femur 40
The stress condition at each position rotates to control tibial insert 30, so as to improve the force environment of knee-joint prosthesis, realizes knee joint
The intelligent of prosthese is adjusted, and promotes the service life of knee-joint prosthesis.
Optionally, pressure sensor is arranged on the surface that tibial insert 30 is contacted with condyle of femur 40.
As shown in Figures 2 to 4, knee-joint prosthesis further includes driving assembly 60, and pressure analyzer 50 passes through driving assembly 60
It controls tibial insert 30 and rotates set angle；Wherein, driving assembly 60 includes actuator, first gear structure 62 and second gear
Structure, actuator are arranged on pedestal 20, and actuator is electrically connected with pressure analyzer 50, and first gear structure 62 is set in driving
On the output shaft 61 of part, second gear structure setting is in the bottom of tibial insert 30, and second gear structure and first gear knot
Structure 62 engages.In this way, the stress condition at each position for the condyle of femur 40 that pressure sensor will test and passing in the form of data
It transports in pressure analyzer 50, pressure analyzer 50 is compared according to the data information received with setting pressure, then will
Adjustment signal is exported into actuator, and actuator is rotated by driving first gear structure 62, and first gear structure 62 rotates simultaneously
Second gear structure and tibial insert 30 is driven to rotate synchronously, so that controlling tibial insert 30 carries out inward turning or outward turning, Jin Ergai
The force environment of kind knee-joint prosthesis, promotes the service life of knee-joint prosthesis.
Knee-joint prosthesis provided by the present application, by setting pressure sensor, pressure analyzer 50 and driving assembly, thus
It can be realized the intelligent automatic regulated of knee-joint prosthesis.
Optionally, first gear structure 62 and second gear structure are face gear.
As shown in Figure 1 to Figure 3, knee-joint prosthesis further includes enclosing part 70, and enclosing part 70 is connected to pedestal 20 and shin bone pad
Between piece 30, and confined space, actuator, first gear structure 62, second gear knot are surrounded with pedestal 20 and tibial insert 30
Structure and pressure analyzer 50 are respectively positioned in confined space.In such manner, it is possible to protect the component in confined space, it is made to be not easy to be damaged
It is bad.
Optionally, enclosing part 70 is fabricated from a flexible material.In this way, carrying out the adjusting of inward turning or outward turning in tibial insert 30
Cheng Zhong, enclosing part 70 can deformation occurs therewith without being damaged, and promotes the service life of enclosing part 70.
Optionally, pressure analyzer 50 includes bluetooth module, and pressure analyzer 50 passes through bluetooth module for comparative analysis
As a result it is sent out, is supported to provide data for the recovery situation that doctor evaluates patient.
Optionally, knee-joint prosthesis further includes power supply unit, and power supply unit is arranged on tibial plateau 10, for being pressure
Sensor, pressure analyzer 50 or actuator power supply.
As shown in Figure 1, condyle of femur 40 includes spaced entocondyle 41 and external condyle 42, pedestal 20 and tibial insert 30
It is two, two pedestals 20 are arranged at intervals on tibial plateau 10, and two tibial inserts 30 are arranged in correspondingly
On two pedestals 20, entocondyle 41 and external condyle 42 are separately positioned on two tibial inserts 30.In this way, two tibial inserts 30
It is respectively that entocondyle 41 and external condyle 42 provide support during condyle of femur 40 is rotated relative to tibial plateau 10.
Optionally, condyle of femur 40 further includes the condyle of femur ontology 43 for connecting entocondyle 41 and external condyle 42.
As shown in Fig. 2, the upper surface of tibial insert 30 is curved surface compatible with condyle of femur 40.
Optionally, as shown in Figures 2 to 4, power supply unit includes power generator 81 and electric storage device 82, power generator 81 with
Condyle of femur 40 connects, and the rotation of condyle of femur 40 is to drive power generator 81 to generate electricity.Specifically, knee joint provided by the present application is had
The patient of prosthese is in kneed bending and stretching motion process, and condyle of femur 40 can be rotated relative to tibial plateau 10, the mistake
Biological energy source is converted mechanical energy by journey, and then power generator 81 generates electricity under the driving of condyle of femur 40, which turns mechanical energy
Turn to electric energy.
As shown in figure 4, electric storage device 82 is connect with power generator 81 by connecting line 84, produced for storing power generator 81
Raw electric energy.In this way, by increasing electric storage device 82, the power storage that power generator 81 can be generated, to guarantee
Within a period of time that condyle of femur 40 does not rotate, electric storage device 82 still be able to for pressure sensor, pressure analyzer 50 or
Actuator power supply.
As shown in Figure 1, power generator 81 includes generator, the first tooth-shape structure 812 and the second tooth-shape structure 813, power generation
Machine is arranged on tibial plateau 10, and the first tooth-shape structure 812 is arranged on the input shaft 811 of generator, the second tooth-shape structure 813
It is arranged on condyle of femur 40, and the second tooth-shape structure 813 is engaged with the first tooth-shape structure 812, and condyle of femur 40 is rotated to drive the
The rotation of two tooth-shape structures 813, the second tooth-shape structure 813 drive the first tooth-shape structure 812 is synchronous with the input shaft 811 of generator to turn
It is dynamic.In this way, will drive the rotation of the second tooth-shape structure 813, the second tooth-shape structure when condyle of femur 40 rotates under the effect of external force
813 will drive the first tooth-shape structure 812 rotation being engaged with, and the first tooth-shape structure 812 drives 811 turns of input shaft of generator
It is dynamic, to drive power generator 81 to generate electricity by condyle of femur 40.
As shown in Figure 1, power generator 81 further includes connecting shaft 814, arc rack is along there are two its axial both ends settings
Connecting shaft 814, a connecting shaft 814 are connect with entocondyle 41, and a connecting shaft 814 is connect with external condyle 42.In this way, circle-arc tooth
Item is connect by connecting shaft 814 with condyle of femur 40, and arc rack is avoided to influence the normal rotation of condyle of femur 40.
As shown in figure 4, knee-joint prosthesis further includes output lead 83, electric storage device 82 passes through output lead 83 and pressure point
Parser 50 connects, for the power supply of pressure analyzer 50.
Knee-joint prosthesis provided by the utility model can intelligently adjust the interior outward turning of tibial insert 30 in patient's body, no
Doctor or patient is needed to intervene, to improve the intelligence degree of knee-joint prosthesis.Specifically, provided by the present application
Knee-joint prosthesis can adjust knee according to the mechanical environment of the practical dissection of patient and knee-joint prosthesis in use at any time
The parameter of articular prosthesis is preferably matched with the osteotomy surface of patient, improves the force environment of knee-joint prosthesis, and it is false to reduce knee joint
The abrasion of body improves the service life of knee-joint prosthesis.
In addition, knee-joint prosthesis provided by the present application can self-generating, electricity generating principle is by kneed bending
And stretching, extension drives the power generator 81 between entocondyle 41 and external condyle 42 to do reciprocating rotation, produces electricl energy, and be collected into storage
In device 82.Biological energy source can be converted mechanical energy by knee-joint prosthesis provided by the present application, be then converted to electric energy, power generation process is not
Need with extraneous connection, ensure that the closure of patient body fluid environment, also improve the intelligence degree of knee-joint prosthesis.
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, operation, device, component and/or their combination.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
Up to the unlimited the scope of the utility model processed of formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each shown in attached drawing
The size of a part is not to draw according to actual proportionate relationship.For skill known to person of ordinary skill in the relevant
Art, method and apparatus may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as awarding
Weigh part of specification.In shown here and discussion all examples, any occurrence should be construed as merely example
Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar
Label and letter similar terms are indicated in following attached drawing, therefore, once be defined in a certain Xiang Yi attached drawing, then with
In attached drawing afterwards do not need that it is further discussed.
In the description of the present invention, it should be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally,
Vertically, vertically, it is horizontal " and " pushing up, bottom " etc. indicated by orientation or positional relationship be normally based on orientation or position shown in the drawings
Relationship is set, is merely for convenience of describing the present invention and simplifying the description, in the absence of explanation to the contrary, these nouns of locality
Do not indicate that and imply that signified device or element must have a particular orientation or be constructed and operated in a specific orientation, because
This should not be understood as the limitation to scope of protection of the utility model；The noun of locality " inside and outside " refers to the wheel relative to each component itself
Wide is inside and outside.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for
Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this
The limitation of utility model protection range.
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 above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of knee-joint prosthesis characterized by comprising
Tibial plateau (10)；
Pedestal (20), the pedestal (20) are arranged on the tibial plateau (10)；
Tibial insert (30), the tibial insert (30) is arranged on the pedestal (20), and is being parallel to the tibial plateau
(10) in lateral surfaces pivotably；
Condyle of femur (40), the condyle of femur (40) contact with the tibial insert (30).
2. knee-joint prosthesis according to claim 1, which is characterized in that the knee-joint prosthesis further include:
Pressure sensor, the pressure sensor is arranged on the tibial insert (30), for detecting the tibial insert
(30) pressure being subject in the condyle of femur (40) rotation process；
Pressure analyzer (50), pressure analyzer (50) setting are on the pedestal (20) and electric with the pressure sensor
Connection, for obtaining the pressure and being compared analysis with setting pressure, to control institute according to the result of the comparative analysis
State tibial insert (30) rotation set angle.
3. knee-joint prosthesis according to claim 2, which is characterized in that the knee-joint prosthesis further includes driving assembly
(60), the pressure analyzer (50) controls the tibial insert (30) by the driving component (60) and rotates set angle；
Wherein, the driving component (60) includes:
Actuator, the actuator are arranged on the pedestal (20), and the actuator is electrically connected with the pressure analyzer (50)
It connects；
First gear structure (62), the first gear structure (62) are set on the output shaft (61) of the actuator；
Second gear structure, the second gear structure setting is in the bottom of the tibial insert (30), and the second gear
Structure is engaged with the first gear structure (62).
4. knee-joint prosthesis according to claim 3, which is characterized in that the first gear structure (62) and second gear
Structure is face gear.
5. knee-joint prosthesis according to claim 3, which is characterized in that the knee-joint prosthesis further include:
Enclosing part (70), the enclosing part (70) are connected between the pedestal (20) and the tibial insert (30), and with institute
It states pedestal (20) and the tibial insert (30) surrounds confined space, it is the actuator, the first gear structure (62), described
Second gear structure and the pressure analyzer (50) are respectively positioned in the confined space.
6. knee-joint prosthesis according to claim 5, which is characterized in that the enclosing part (70) is fabricated from a flexible material.
7. knee-joint prosthesis according to claim 2, which is characterized in that the pressure analyzer (50) includes bluetooth mould
The result of the comparative analysis is sent out by block, the pressure analyzer (50) by the bluetooth module.
8. knee-joint prosthesis according to claim 3, which is characterized in that the knee-joint prosthesis further includes power supply unit,
The power supply unit is arranged on the tibial plateau (10), for being the pressure sensor, the pressure analyzer (50)
Or the actuator power supply.
9. knee-joint prosthesis according to any one of claim 1 to 8, which is characterized in that the condyle of femur (40) includes
Spaced entocondyle (41) and external condyle (42), the pedestal (20) and the tibial insert (30) are two, two
The pedestal (20) is arranged at intervals on the tibial plateau (10), and two tibial inserts (30) set correspondingly
It sets on two pedestals (20), the entocondyle (41) and the external condyle (42) are separately positioned on two shin bone pads
On piece (30).
10. knee-joint prosthesis according to any one of claim 1 to 8, which is characterized in that the tibial insert (30)
Upper surface is compatible curved surface with the condyle of femur (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822221158.8U CN209611429U (en) | 2018-12-27 | 2018-12-27 | Knee-joint prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822221158.8U CN209611429U (en) | 2018-12-27 | 2018-12-27 | Knee-joint prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209611429U true CN209611429U (en) | 2019-11-12 |
Family
ID=68447565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822221158.8U Active CN209611429U (en) | 2018-12-27 | 2018-12-27 | Knee-joint prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209611429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109481096A (en) * | 2018-12-27 | 2019-03-19 | 北京爱康宜诚医疗器材有限公司 | Knee-joint prosthesis |
-
2018
- 2018-12-27 CN CN201822221158.8U patent/CN209611429U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109481096A (en) * | 2018-12-27 | 2019-03-19 | 北京爱康宜诚医疗器材有限公司 | Knee-joint prosthesis |
| CN109481096B (en) * | 2018-12-27 | 2024-05-28 | 北京爱康宜诚医疗器材有限公司 | Knee joint prosthesis |
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