CN105769119A - Knee joint soft tissue balance measuring device and measuring method thereof - Google Patents
Knee joint soft tissue balance measuring device and measuring method thereof Download PDFInfo
- Publication number
- CN105769119A CN105769119A CN201510390837.6A CN201510390837A CN105769119A CN 105769119 A CN105769119 A CN 105769119A CN 201510390837 A CN201510390837 A CN 201510390837A CN 105769119 A CN105769119 A CN 105769119A
- Authority
- CN
- China
- Prior art keywords
- soft tissue
- knee joint
- measurement apparatus
- gap
- connector
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention provides a knee joint soft tissue balance measuring device and measuring method. The measuring device comprises a reference plate, a movable plate, a base body, a driver, a gap indicator, an outward rotating indicator and a load indicator, wherein the reference plate is fixedly connected to the base body; the movable plate is rotatably connected to the driver; the gap indicator is connected with the driver; the outward rotating indicator is connected with the movable plate; the load indicator is connected with the driver; and the driver is arranged on the base body. The measuring device and the measuring method provided by the invention have the advantages that the extending gap, the knee bending gap, the thighbone physiological outward rotating angle and the exerted load can be integrally measured at the same time; before the knee bending gap is formed, the prejudgment can be performed according to parameters obtained through measurement and the original soft tissue balance conditions; and the knee bending gap conforming to the physiological feature is determined, so that the expected perfect soft tissue balance can be obtained.
Description
Technical field
The present invention relates to a kind of operation tool used in total knee replacement is performed the operation, particularly a kind of knee joint soft tissue balance measurement apparatus and measuring method thereof.
Background technology
Knee joint is mainly made up of femur, tibia and patella, and joint capsule is attached to the periphery of each bone articular cartilage, and the surrounding of joint capsule has ligament to reinforce, the joint capsule at knee joint place, ligament, muscle, tendon, nerve, blood vessel etc. constitute knee joint soft tissue.
Along with the arrival of aging society, pathologic changes of knee joint has become as a kind of common disease affecting life of elderly person quality.Total knee arthroplasty is a kind of effective ways for the treatment of pathologic changes of knee joint in late period.Total knee replacement refers to replace with artificial prosthesis and has been subjected to badly damaged and can not exercise the knee joint of normal function, thus eliminating kneed pain, recovers its stability and mobility.The knee joint schematic diagram that Figure 1A and Figure 1B respectively total knee replacement is forward and backward, knee-joint prosthesis mainly includes femoral prosthesis, tibial prosthesis, is positioned at low friction pad sheet (generally being become by ultrahigh molecular weight polyethylene) between the two and patellar prosthesis.
In order to install prosthese, it is necessary to femur and tibia are cut off, so that the bone profile after cutting off can match with the installed surface of prosthese.Such as, for tibia, cut off step and mainly include cutting off of proximal tibia (referring to the one end near heart)；For femur, cut off step and mainly include cutting off of distal femur (referring to the one end away from heart) and the osteotomy between femur preartis, postartis, inclined-plane and condyle.
As shown in Figure 2 A, cut off and formed after distal femur cuts off face 200 completing distal femur, also need to by special osteotomy instrument, such as four-in-one osteotomy plate 205, femur preartis 201, postartis 202, remotely located the first inclined-plane cut off between face 200 and preartis 201 and remotely located the second inclined-plane cut off between face 200 and postartis 202 are carried out osteotomy, then also to carry out osteotomy between condyle 203.Distal femur cuts off the hole 204 on surface 200 for positioning and install osteotomy plate 205.
Completing the femur schematic diagram after osteotomy as shown in Figure 2 B, the distal femur ultimately formed as we can see from the figure cuts off face 200a, femur preartis cuts off face 201a, femoral-posterior condyles is cut off and cut off face 203a between face 202a, condyle, connects femur preartis and cut off face 201a and distal femur is cut off the first inclined-plane 206a of face 200a and connects femoral-posterior condyles and cut off face 202a and distal femur cuts off the second inclined-plane 207a of face 200a.Fig. 2 C is the schematic diagram on the femur after femoral prosthesis is installed to osteotomy.
In total knee arthroplasty, it is the committed step affecting operative effect that restoration and reconstruction knee joint stretches gap to the balance in gap of going down on one's knees, the balance of interior lateral gap and the equalization of strain of corresponding soft tissue.
In current total knee arthroplasty, for stretching gap, it is when knee joint is stretched, the supporting conventional osteotomy apparatus that user is provided by knee-joint prosthesis supplier, after carrying out the cutting off of distal femur and proximal tibia, using general clearance measurement block to check and assess the precision cut off, and take the circumstances into consideration to make corresponding osteotomy and/or Soft Tissue Treatment, suitable stretching gap thus obtaining.
And for going down on one's knees gap, usually when knee joint is gone down on one's knees, the outward turning angle that user is given on the instrument according to the condyle of femur size model measured and producer's offer, determine the placement location of four-in-one osteotomy plate, after cutting off femoral-posterior condyles, use general clearance measurement block to check and assess the precision cut off, and compare inspection with stretching gap, then take the circumstances into consideration to make corresponding osteotomy and/or Soft Tissue Treatment, thus obtaining suitable gap of going down on one's knees.
In above process, not only need more than one piece operating theater instruments carry out with the use of, and, owing to the outward turning angle on the instrument that producer provides is given, usually it is not inconsistent with the outward turning situation of the femur of patient own, therefore this way being manually set femur outward turning angle, it is likely that bring huge difficulty to follow-up osteotomy and soft tissue balance.Additionally, balance owing to stretching gap and the balance in gap of going down on one's knees, interior outside soft tissue depends entirely on the experience of user, even if it is equal with gap length of going down on one's knees to accomplish to stretch gap, but cannot quantify the respective loads applied, namely corresponding soft tissue tension balance.Therefore, it does not have realize soft tissue balance veritably, more before gap of going down on one's knees is formed, according to the physiological conditions of patient itself, it is determined that outward turning angle, soft tissue balance cannot be carried out.
In more existing patent documentations, have been described for the measuring device in some total knee arthroplastys, such as, disclosed in Chinese Patent Application No. 200620014638.1 total knee replacement soft tissue balance etc. measuring device, and lateral balance tonometry device inside and outside knee joint disclosed in Chinese Patent Application No. 200820124249.3, but these measuring devices all can only be measured and kneed stretch gap length and the gap length of going down on one's knees after femoral-posterior condyles is cut off, the outward turning angle of femoral-posterior condyles cannot be measured, also the respective loads applied cannot be quantified, thus can not before gap of going down on one's knees is formed, physiological conditions according to patient itself carries out soft tissue balance, simply measure the size stretching gap and gap of going down on one's knees, real soft tissue balance cannot be realized.
Summary of the invention
First purpose of the present invention is in that to provide a kind of knee joint soft tissue balance measurement apparatus and measuring method thereof, so that user is before gap of going down on one's knees is formed, namely before femoral-posterior condyles is cut off, physiological conditions according to patient self, determine the gap and stretch gap, the balance of interior lateral gap and corresponding equalization of strain of going down on one's knees of balance, realizing real soft tissue balance, thus reducing the uncertainty of the surgical technic varied with each individual, improving the postoperative effect of artificial full knee joint transposing.
In order to realize this goal of the invention, the invention provides a kind of knee joint soft tissue balance measurement apparatus, including: datum plate, movable plate, matrix, driver, gap indicator, outward turning indicator and load indicator, wherein, described datum plate is fixedly connected to described matrix；Described movable plate is rotatably connected to described driver by rotating shaft, and under the driving of described driver, away from or near described datum plate；Described gap indicator is connected with described driver, kneed stretches gap and the size in gap of going down on one's knees for measuring；Described outward turning indicator is connected with described movable plate, cuts off the angle in face and/or the outward turning angle of femoral-posterior condyles for measuring distal femur；Described load indicator is connected with described driver, when being used for measuring soft tissue balance, and the size of institute's femur and tibia imposed load；Described driver is arranged at described matrix.
The invention provides a kind of knee joint soft tissue balance measuring method, including: under knee joint straight configuration, make described datum plate contact proximal tibia cut off face, under the driving of described driver, make described movable plate contact distal femur cut off face；Reading according to described outward turning indicator for displaying, it may be judged whether need to carry out again osteotomy and/or soft tissue balance, as otherwise carried out next step, then carry out again osteotomy and/or soft tissue balance in this way until the reading of described outward turning indicator for displaying is zero；According to the reading on described matrix, it is thus achieved that the numerical value that gap (is namely stretched) in the first gap, and according to the reading on described load indicator, it is thus achieved that the numerical value of the first load；Cut off face from described distal femur and described proximal tibia cuts off and takes out described measurement apparatus between face；Under knee sprung state, described datum plate is contacted proximal tibia and cuts off face, under the driving of described driver, make described movable plate contact femoral-posterior condyles；By the postartis thickness in described first gap and selected femoral prosthesis, described femoral-posterior condyles and the proximal tibia face of cutting off are strutted to correct position；Or the numerical value according to the first load, struts described femoral-posterior condyles and tibial plateau to correct position；Now, according to the reading on described load indicator and gap indicator, it is thus achieved that the numerical value in the second load and the second gap；And the comparative result according to the numerical value of described first load and the numerical value of described second load, it may be judged whether need further Soft Tissue Treatment；Or the comparative result of the numerical value in the numerical value in foundation the first gap and the second gap, it may be judged whether need further Soft Tissue Treatment；Meanwhile, according to the reading in described outward turning indicator, it is thus achieved that the outward turning angle of femoral-posterior condyles.
By technique scheme, the invention provides the knee joint soft tissue balance comprehensive measurement device of a kind of multifunctional unit and measuring method thereof, after the measurement apparatus using the present invention, it is not necessary to re-use clearance measurement block.The size of the external load applied is provided simultaneously, farthest the personal experience of operating doctor is quantified by numerical value.Therefore, it can before gap of going down on one's knees is formed, according to the physiological conditions measuring parameter and the patient itself obtained, it is determined that meet the gap of going down on one's knees of its feature, thus obtaining intended perfect soft tissue balance.The big data analysis of the concrete outward turning number of degrees, it is possible to provide strong ocular proof for China's clinical research.
A kind of knee joint soft tissue balance measurement apparatus of offer is provided, in order to user carry out stretching gap and go down on one's knees clearance measurement and soft tissue balance time, reduce owing to patella overturns the impact that soft tissue balance is brought.
In order to realize this goal of the invention, the invention provides a kind of knee joint soft tissue balance measurement apparatus, it includes datum plate, movable plate, matrix, driver and gap indicator；Wherein, described datum plate is fixedly connected to described matrix；Described movable plate is rotatably connected to described driver by rotating shaft, and under the driving of described driver, away from or near described datum plate；Described gap indicator is connected with described driver, for measuring the kneed size stretching gap and gap of going down on one's knees；Described movable plate and described datum plate bias relative to described matrix；Described driver is arranged at described matrix.
Pass through technique scheme, described movable plate and described datum plate bias relative to described matrix, therefore, user can be implemented in patella original position and bend and stretch gap soft tissue balance, farthest reduces in traditional operation owing to patella overturns the impact that soft tissue balance is brought.
It is yet a further object of the present invention to provide a kind of knee joint soft tissue balance measurement apparatus, in order to stretch gap and gap of going down on one's knees in measurement and balance after, the result measuring balance is directly output to subsequent procedures apparatus, formation slitless connection.
In order to realize this goal of the invention, the invention provides a kind of knee joint soft tissue balance measurement apparatus, it includes datum plate, movable plate, matrix, driver, gap indicator and osteotomy guider；Described datum plate is fixedly connected to described matrix；Described movable plate is rotatably connected to described driver by rotating shaft, and under the driving of described driver, away from or near described datum plate；Described gap indicator is connected with described driver, for measuring the kneed size stretching gap and gap of going down on one's knees；Described driver is arranged at described matrix；Described osteotomy guider and described datum plate keep being mutually perpendicular to, and keep synchronizing moving with described movable plate, and described osteotomy guider has at least one pair of pilot hole, and the line of said two pilot hole is paralleled with described datum plate.
Pass through technique scheme, can realize using the pilot hole on osteotomy guider as hole, location, squeeze into locating pin, slitless connection is formed with the operating procedure of subsequent installation osteotomy plate, thus for the suitable outward turning angle of condyle of femur, no longer artificially set by force, but the physiological conditions completely in accordance with patient's body determines suitable angle, after gap of going down on one's knees is formed, it is thus achieved that intended perfect soft tissue balance.
Accompanying drawing explanation
The knee joint schematic diagram that Figure 1A and Figure 1B respectively total knee replacement is forward and backward；
Fig. 2 A to 2C is that femur cuts off and prosthese scheme of installation；
Fig. 3 is the structural representation of the knee joint soft tissue balance measurement apparatus of a preferred embodiment of the present invention；
Fig. 4 is the decomposing schematic representation of the section components in the measurement apparatus shown in Fig. 3；
Fig. 5 is the decomposing schematic representation of section components in the driver shown in Fig. 3；
Fig. 6 is the structural representation of the movable plate shown in Fig. 3 and the first connector；
Fig. 7 is the decomposing schematic representation of the outward turning measuring device shown in Fig. 3；
Fig. 8 is the structural representation after installing osteotomy guider on the movable plate shown in Fig. 6；
Fig. 9 is the structural representation of the knee joint soft tissue balance measurement apparatus of another embodiment；
Figure 10 is the structural representation of the knee joint soft tissue balance measurement apparatus after being mounted with osteotomy guider.
Detailed description of the invention
The knee joint soft tissue balance measurement apparatus and the measuring method thereof that the present invention are proposed below in conjunction with the drawings and specific embodiments are described in further detail.According to description below and claims, advantages and features of the invention will be apparent from.It should be noted that, accompanying drawing all adopts the form simplified very much and may not use ratio accurately, only in order to convenience, the purpose aiding in illustrating the embodiment of the present invention lucidly.
Refer to Fig. 3, it is the structural representation of knee joint soft tissue balance measurement apparatus of a preferred embodiment of the present invention, and described measurement apparatus mainly includes datum plate 10, movable plate 20, matrix 30, driver 40, gap indicator 50, outward turning indicator 60, load indicator 70 and lock 80.Introduce their structure, effect and annexation thereof in detail below.
In the present embodiment, datum plate 10 and movable plate 20 are the two boards shape thing being shaped like, and all have uniform thickness and even curface.Movable plate 20 is rotatablely arranged at the top of datum plate 10, and there is poised state and rotation status, when movable plate 20 is in poised state, movable plate 20 is paralleled with datum plate 10, when movable plate 20 is in rotation status, movable plate 20 is not parallel with datum plate 10.
Datum plate 10 defines a datum level, illustrates in order to convenient, and the length direction of datum plate 10 is defined as X-direction, and width is defined as Y-direction, then described datum level can adopt X-Y plane to represent, the direction being perpendicular to datum level is defined as Z-direction.All directions forward defines, as shown in Figure 3.Above-mentioned movable plate 20 is paralleled with datum plate 10 and is referred to: the upper surface of movable plate 20 is parallel to described datum level.
Datum plate 10 and movable plate 20 can be regular shape, can also be irregularly shaped, datum plate 10 shown in Fig. 3 and movable plate 20 substantially kidney ellipsoid, and middle has the breach (see Fig. 3 and 6) of an indent in the direction of the width, the physiological structure being mainly designed to cooperation measurand of this shape.Certainly, in other embodiments, described datum plate and movable plate can also be shape, the two boards shape thing varied in size, tablet or other suitable shape any, and the present invention is without limitation.
Matrix 30 extends along the Z direction, and therefore, matrix 30 is set to vertical relative to datum plate 10.As it is shown on figure 3, matrix 30 has cylindrical-shaped structure, inner hollow.Certainly, those skilled in the art are it is contemplated that matrix 30 can also have rectangular structure or other structures, and the present invention is without limitation.Datum plate 10 is set to be relatively fixed with matrix 30, and movable plate 20 is connected to driver 40, and its concrete annexation will be described below.
Gap indicator 50 includes gap scale substrate 51 and gap instruction parts 52 (see Fig. 4 and Fig. 5), in the present embodiment, gap scale substrate 51 and matrix 30 are structure as a whole, gap scale substrate 51 is provided with gap scale, for showing the size of the distance between movable plate 20 and datum plate 10.Gap instruction parts 52 are connected with driver 40, and therefore, under the driving of driver 40, gap instruction parts 52 along matrix 30, move relative to datum plate 10 in z-direction together with movable plate 20.In the process, there is Tong Bu change in the distance between movable plate 20 and datum plate 10, and described distance can be read by the gap scale on gap scale substrate 51.
Please referring also to Fig. 3 to Fig. 5, as mentioned above, driver 40 is connected with movable plate 20, for driving movable plate 20 to move up and down relative to datum plate 10, in the present embodiment, driver 40 includes first handle 41, second handle the 42, first actuator the 43, first elastic component the 44, second actuator 45 and the second elastic component 46.Matrix 30 is fixed in one end of first handle 41, and the other end grips for user, and datum plate 10 is fixed on one end of first handle 41, thus being indirectly secured to matrix 30.One end of second handle 42 is rotatably coupled described first actuator 43, and the other end grips for user, and the first articulated section 411 of first handle 41 is connected with the second articulated section 421 of second handle 42.First actuator the 43, first elastic component the 44, second actuator the 45, second elastic component 46 is stacked in matrix 30 successively from bottom to up.
Please referring also to Fig. 3 to Fig. 6, the first connector 22 (see Fig. 6) and the second connector 11 (see Fig. 3) it is additionally provided with outside matrix 30, first connector 22 is used for connecting movable plate 20 and the second actuator 45, thus connecting movable plate 20 and driver 40, the second connector 11 is used for connecting datum plate 10 and first handle 41.First connector 22 and the second connector 11 be arranged in parallel.Press first handle 41 and second handle 42 when user after, second handle 42 drives the first actuator 43 to move up, thus driving the second actuator 45 to move up in matrix 30, the first connector 22 is driven to drive movable plate 20 to move up relative to datum plate 10.
Please referring also to Fig. 4 and Fig. 5, matrix 30 is further opened with the first sliding tray 31, locating dowel 32 is also included in matrix 30, first actuator the 43, first elastic component the 44, second actuator 45 and the second elastic component 46 are sheathed on locating dowel 32, first sliding tray 31 is opened on matrix 30 along the Z direction, in order to the first actuator 43 is connected with outside second handle 42 and moves up and down relative to matrix 30.
Second actuator 45 includes central part 451, pair of outer adjutage 452 and external tabs 453.Central part 451 is connected with outside adjutage 452, and it is arranged at the inside of matrix 30, and outside adjutage 452 is sheathed on the outside of matrix 30, and external tabs 453 connects outside adjutage 452 and the first connector 22 respectively.Central part 451, pair of outer adjutage 452 and external tabs 453 can be one-body molded, and the present invention is without limitation.
It is preferred that when the second actuator 45 is under the driving of second handle 42, when moving up and down along the Z direction, outside adjutage 452 moves up and down also along the outer surface of matrix 30.In the present embodiment, gap instruction parts 52 are arranged on outside adjutage 452, are used for indicating gap scale, and it is preferred that both are structure as a whole, so that total is more compact and accurate.Matrix 30 is further opened with the second sliding tray (not shown), in order to the part that central part 451 is connected with outside adjutage 452 is from its traverse.
Asking for an interview Fig. 3, Fig. 6 and Fig. 7, movable plate 20 has rotating shaft 21, and rotating shaft 21 is connected with the first connector 22, so that movable plate 20 can rotate around the axis of rotating shaft 21.Movable plate 20 is also connected with outward turning indicator 60, in order to while movable plate 20 rotates, and drives outward turning indicator 60 to be operated.Specifically, outward turning indicator 60 includes outward turning scale substrate 61 and outward turning instruction parts 62, outward turning scale substrate 61 is fixed on the first connector 22, and outer surface is provided with outward turning scale, and rotating shaft 21 and outward turning instruction parts 62 are connected, thus driving outward turning instruction parts 62 to move on outward turning scale substrate 61.
Specifically, outward turning indicator 60 also includes STATEMENT OF FEDERALLY SPONSORED 63, STATEMENT OF FEDERALLY SPONSORED 63 and rotating shaft 21 are connected by form fit, STATEMENT OF FEDERALLY SPONSORED 63 has little tooth, outward turning instruction parts 62 are provided with linkage portion 621, linkage portion 621 is also equipped with little tooth, drives linkage portion 621 to link by STATEMENT OF FEDERALLY SPONSORED 63, it may be achieved the driving to outward turning instruction unit part 62.
Certainly, these are only that driver 40 drives movable plate 20, movable plate 20 to link a kind of embodiment of outward turning indicator 60, in fig .9, it can also be seen that the another embodiment of driver 40, it is similar with implementation explained before, and first elastic component the 44, second actuator 45 and the second elastic component 46 are still sheathed on locating dowel 32, but the difference is that, first actuator 43 fixes with the locating dowel 32 in matrix 30, and the first actuator 43 is positioned at outside matrix 30.
Person in the art is after with reference to above-described embodiment, may be made that multiple mapping mode, make movable plate 20 under the driving of driver 40, move up and down (such as V belt translation, Chain conveyer, gear drive, Worm-drive and lead screw transmission) along the Z direction and the axis about rotating shaft rotates, outward turning indicator 60 is when movable plate 20 rotates, outward turning instruction parts 62 move (such as STATEMENT OF FEDERALLY SPONSORED 63 and linkage portion 621 frictional drive, or linkage portion 621 directly link) with rotating shaft 21 on outward turning scale substrate 61.The present invention is without limitation.
Asking for an interview Fig. 3 and Fig. 5, in the present embodiment, load indicator 70 includes load scale substrate 71 and load instruction parts 72.Load scale substrate 71 is arranged at matrix 30 side, and it extends also along Z-direction, and is provided with load scale along the direction in the both sides of load scale substrate 71.Load scale substrate 71 and the first actuator 43 fix, and load instruction parts 72 are connected with driver 40, so that when second handle 42 drives the first actuator 43 to move, band dynamic loading scale substrate 71 and load instruction parts 72 do relative motion simultaneously.
It is noted that load instruction parts 72 may also set up in outside adjutage 452, and it is preferred that with outside adjutage 452 in integrative-structure.As shown in Figures 3 to 5, the lower section of the gap instruction externally-located adjutage 452 of parts 52, gap scale on gap scale substrate 51, gap scale is indicated, the end of the load instruction externally-located adjutage 452 of parts 72, points to load scale substrate 71, load scale is indicated, so that user is more convenient, obtain relevant parameter rapidly, and makes the structure of measurement apparatus more succinct, compact and be easy to operation.
Asking for an interview Fig. 3 and Fig. 4, in the present embodiment, lock 80 is arranged on first handle 41, and includes a pair press section 81, sticking department 82 and articulated section 83.Two press sections 81 are positioned at the both sides of same one end of lock 80, conveniently operating when pressing for any right-hand man of user and be used for left knee joint or right knee joint, and sticking department 82 is positioned at the other end of lock 80, for locking or discharging load indicator 70, articulated section 83 is between press section 81 and sticking department 82, for being connected with first handle 41.
Specifically, sticking department 82 having multiple little tooth, and the side of load indicator 70 also has multiple little tooth, by the engagement of between cog, load indicator 70 can be locked by lock 80.When after locking, owing to second handle cannot drive load indicator 70 to move, therefore, the first actuator 43 also cannot being driven to move, the position of movable plate 20 and datum plate 10 remains unchanged.When user pressure-locks the press section 81 of device 80, sticking department 82 is away from load indicator 70, i.e. releasable load indicator 70, driver 40 can operate.
It is preferred that reset components such as torsion spring can be used at articulated section 83 place so that after user unclamps press section 72, lock 80 automatically resets, lock load indicator 70.Certainly, the structure of lock 80 and set-up mode have multiple, the mechanism that can pass through other realizes the locking to driver 40, such as, locking device shown in Fig. 9, it can pass through the buckle 41a being arranged on first handle 41, and is arranged on the holding section 42b between second handle 42 and first handle 41, lock drive device 40, the present invention is without limitation.
Refer to Fig. 8 and Figure 10, preferably, knee joint soft tissue balance measurement apparatus in the present embodiment also includes osteotomy guider 90, it is removable installed in the top of movable plate 20, and it is perpendicular with datum plate 10, osteotomy guider 90 has at least one pair of pilot hole, and the line of pilot hole is paralleled by this with the datum level at datum plate 10 place.In the present embodiment, osteotomy guider 90 is removably vertically installed on the first connector 22.
Refer to Fig. 3 and Figure 10, more optimally, rotatable plate 20 and datum plate 10 can bias relative to matrix 30, say, that the projection on X/Y plane of the axis of the rotating shaft 21 of rotatable plate 20 and the central axis of datum plate 10 is without the projection on X/Y plane of the central axis of matrix 30.Further, rotatable plate 20 and datum plate 10 be optionally offset to two of matrix 30 not the either side in homonymy to adapt to left knee joint or the instructions for use of right knee joint.
Specifically, the first connector 22 is to be connected to the second actuator 45 in removably mode.Second connector 11 is also be connected to matrix 30 in removably mode.Datum plate 10 and the second connector 11 can be one-body molded, and the present invention is without limitation.When the first connector 22 is pulled down on the second actuator 45 together with rotatable plate 20, and second after connector 11 pulls down on first handle 41 together with datum plate 10, the first connector 22 and the second connector 11 is overturn with 180 degree, still the first connector 22 can be connected to the second actuator 45, second connector 11 is connected to first handle 41, and the upper and lower surface of rotatable plate 20 also can be printed on locative cue mark, for instance LEFT and RIGHT is to adapt to left knee joint or the instructions for use of right knee joint.
Further, the first connector 22 is coordinated by centrosymmetric structure with the second actuator 45, for instance, it is rectangular connecting portion that the first connector 22 has cross section, and the second actuator 45 has the slot of correspondence.After the first connector 22 turns over turnback, can still be by inserting this connecting portion the slot of the second actuator 45, it is achieved both are relatively fixed.Certainly, centrosymmetric structure can also be cross section is the structure of other shapes such as square, rhombus.Same, the second connector 11 coordinates also by centrosymmetric structure with first handle 41.
Pass through foregoing description, the structure of the knee joint soft tissue balance comprehensive measurement device in the present embodiment is very clear, next, will be described in this measurement apparatus advantage compared to existing measurement apparatus, and a kind of new measuring method by using this measurement apparatus to carry out so that before gap of going down on one's knees is formed, it is possible to according to the physiological conditions measuring parameter and the patient itself obtained, it is determined for compliance with the gap of going down on one's knees of its feature, thus obtaining intended perfect soft tissue balance.
In total knee arthroplasty, user is first according to actual demand and corresponding operation skill, implements distal femur and cuts off and cut off with proximal tibia, thus obtaining distal femur to cut off face and proximal tibia cuts off face.Stretch the knee joint of patient, and by the knee joint soft tissue balance measurement apparatus in the present embodiment, measure distal femur and cut off face and proximal tibia cuts off and stretches gap between face.Specifically, user grips first handle 41 and second handle 42, make datum plate 10 and movable plate 20 insert distal femur and cut off face and proximal tibia cuts off between face, and drive movable plate 20 away from datum plate 10, making movable plate 20 contact distal femur and cut off face, datum plate 10 contacts proximal tibia and cuts off face.
Now, if the outward turning instruction parts 61 in outward turning indicator 60 are not in zero-bit, namely illustrating distal femur to cut off face, cut off face with proximal tibia not yet parallel, interior lateral gap is uneven, then user is taken the circumstances into consideration again the soft tissue in osteotomy and/or internal outside and is processed, and adjusts the distal femur face of cutting off to cutting off face with proximal tibia parallel.Then, user can pass through the gap scale on matrix 30, read the numerical value in the first gap (namely stretching gap) that distal femur cuts off face and proximal tibia cuts off between face, read in the lump under this position, the numerical value of the first load on load indicator 70 simultaneously.
Then, user takes out described measurement apparatus, according to suitable operation skill, knee joint is placed in the position of going down on one's knees of 90 degree, more again this measurement apparatus is inserted between femoral-posterior condyles and tibia.It should be noted that femoral-posterior condyles now is not yet cut off, user grips first handle 41 and second handle 42 again, drives movable plate 20 away from datum plate 10, and contacts femoral-posterior condyles, and datum plate 10 contacts proximal tibia and cuts off face.
Owing to femur exists certain outward turning angle, therefore, the movable plate 20 of contact femoral-posterior condyles also can deflect, now, user can directly read the outward turning number of degrees of display in outward turning indicator 60, thus understanding the outward turning angle of now patient's femur itself, this outward turning angle shows the truth of the femoral-posterior condyles of patient, for follow-up big data analysis, significant, particularly can provide strong ocular proof for the clinical research of Chinese population femoral-posterior condyles.
User can be stretched gap by what record before and selected the postartis thickness of the femoral prosthesis installed afterwards, utilizes movable plate 20 and datum plate 10, struts femoral-posterior condyles and the proximal tibia face of cutting off to correct position；Or the physiological conditions according to the first load data recorded before and patient itself, utilizes this apparatus to strut femoral-posterior condyles and the proximal tibia face of cutting off to correct position.Now, need to again read off the numerical value of the second load and the second gap in load indicator 70 and gap indicator 50, and by the numerical value of described second load compared with the numerical value of described first load, the numerical value in the second gap and the numerical value in the first gap are compared, determine the size bending and stretching gap and corresponding equalization of strain, thus realizing real soft tissue balance.
Therefore, after employing the knee joint soft tissue balance comprehensive measurement device that the present embodiment provides, user can before carrying out femoral-posterior condyles and cutting off, anticipation is carried out to whether soft tissue balance can be obtained after cutting off, and whole process is bent and stretched the size in gap, the soft tissue situation of patient itself is all complied with in the balance of corresponding tension force and the determination of femur outward turning angle, the perfect soft tissue balance of real acquisition.
It is worth mentioning that, knee joint soft tissue balance comprehensive measurement device provided by the present invention also more preferably includes osteotomy guider 90, having at least one pair of pilot hole on osteotomy guider 90, the line of pilot hole is paralleled by this with the datum level at datum plate 10 place.The diverse location of pilot hole can correspond to the lateral femoral condyle prosthesis of different model.Therefore, when user is to stretching gap, after gap of going down on one's knees, the second load reading and described first load reading judge, after thinking that femoral-posterior condyles is cut off, perfect soft tissue balance can be obtained, then may select and utilize osteotomy guider 90, select suitable pilot hole, femoral-posterior condyles hammers into two pieces of steinman pins, so that follow-up osteotomy buttress carries out osteotomy according to the position of this steinman pin.
So, between femoral-posterior condyles surface and the femur platform after osteotomy go down on one's knees gap with stretch gap and balance each other, interior lateral gap balance, the first load and the second load balance each other, thus realizing perfect soft tissue balance.It is to say, by knee joint soft tissue balance measurement apparatus provided by the present invention, the measuring process of back and the osteotomy step of a rear step can be made to carry out slitless connection.
More preferably, in measurement process, can first remove or osteotomy guider 90 is not installed, so that the process of measurement is more convenient, and after determining femoral-posterior condyles and proximal tibia cuts off the relative position in face, then installing osteotomy guider 90, carry out nailing operation.
Further, in the introduction of knee joint soft tissue balance measurement apparatus, once refer to rotatable plate 20 and datum plate 10 can bias relative to matrix 30, such design can reduce the damage for patient's patella and corresponding soft tissue.Specifically, in total knee arthroplasty, user is firstly the need of cutting an art mouth at the knee joint place of patient, and this art mouth is positioned at the side of patella, in traditional operation, user needs to open the muscular tissue with patella, measurement, and utilize the measurement apparatus of the present embodiment, owing to rotatable plate 20 and datum plate 10 are optionally offset to left side or the right side of matrix 30, therefore, user can be implemented in patella original position and measure and soft tissue balance, farthest reduce in traditional operation owing to patella overturns the impact that soft tissue balance is brought.
Further, for the knee joint of left and right, art mouth is all positioned at kneed inner side, and for the right knee joint, so that patella keeps original position, rotor plate 20 and datum plate 10 need to be offset to the left side (as shown in Figure 3) of matrix 30；And for the knee joint on the left side, so that patella keeps original position, rotor plate 20 and datum plate 10 need to be offset to the right side of matrix 30.Therefore, user is optional to be pulled down the first connector 22 together with rotatable plate 20, second connector 11 is pulled down together with datum plate 10, after turning over turnback, they are respectively connecting to the second actuator 45 and first handle 41 again, to utilize same measurement apparatus, optionally carry out the kneed operation on the right or the left side.Therefore, described measurement apparatus can be simultaneously suitable for left and right knee joint.
In sum, the invention provides the knee joint soft tissue balance measurement apparatus of a kind of multifunctional unit and measuring method thereof, after the measurement apparatus using the present invention, it is not necessary to re-use clearance measurement block.For the suitable outward turning angle of femur, no longer artificially set by force, but the situation completely in accordance with patient's body determines suitable angle.The big data analysis of the outward turning number of degrees, it is possible to provide strong ocular proof for China's clinical research.It addition, use the measurement apparatus of the present invention, the size of the external load applied can be provided simultaneously, farthest the personal experience of operating doctor is quantified by numerical value.The result output of this measurement apparatus, is realized by osteotomy guider, with the use of subsequent procedures apparatus, formation slitless connection.And the Unique physical design of this measurement apparatus (being optionally biased), suitable in left and right knee joint, and make operating doctor can implement in patella original position and bend and stretch gap soft tissue balance, farthest reduce in traditional operation owing to patella overturns the impact that soft tissue balance is brought.
Foregoing description is only the description to present pre-ferred embodiments, not any restriction to the scope of the invention, any change that the those of ordinary skill in field of the present invention does according to the disclosure above content, modification, belongs to the protection domain of claims.
Claims (34)
1. a knee joint soft tissue balance measurement apparatus, it is characterised in that including:
Datum plate, movable plate, matrix, driver, gap indicator, outward turning indicator and load indicator,
Wherein, described datum plate is fixedly connected to described matrix；Described movable plate is rotatably connected to described driver by rotating shaft, and under the driving of described driver, away from or near described datum plate；Described gap indicator is connected with described driver, for measuring the kneed size stretching gap and gap of going down on one's knees；Described outward turning indicator is connected with described movable plate, cuts off the angle in face and/or the outward turning angle of femoral-posterior condyles for measuring distal femur；Described load indicator is connected with described driver, size when being used for measuring soft tissue balance, to femur and tibia institute imposed load；Described driver is arranged at described matrix.
2. knee joint soft tissue balance measurement apparatus according to claim 1, it is characterized in that, also including the first connector and the second connector, described first connector is connected with described driver, and described movable plate is connected with described first connector by described rotating shaft；Described second connector and described datum plate are relatively fixed, and are fixed on described matrix；Described first connector is set to parallel with described second connector.
3. knee joint soft tissue balance measurement apparatus according to claim 2, it is characterised in that described movable plate and described datum plate bias relative to described matrix.
4. knee joint soft tissue balance measurement apparatus according to claim 3, it is characterised in that described movable plate and described datum plate are optionally offset to the either side in the both sides of described matrix, to be selectively adapted to left knee joint or right knee joint.
5. knee joint soft tissue balance measurement apparatus according to claim 4, it is characterised in that the upper and lower surface of described movable plate is respectively arranged with locative cue mark.
6. knee joint soft tissue balance measurement apparatus according to claim 4, it is characterised in that described first connector is connected with described driver by centrosymmetric structure, and described second connector is fixed on described matrix also by centrosymmetric structure.
7. knee joint soft tissue balance measurement apparatus according to claim 2, it is characterized in that, also include osteotomy guider, described osteotomy guider and described datum plate keep being mutually perpendicular to, and keep synchronizing moving with described movable plate, and described osteotomy guider has at least one pair of pilot hole, the line of said two pilot hole is paralleled with described datum plate.
8. knee joint soft tissue balance measurement apparatus according to claim 7, it is characterised in that described osteotomy guider is removably connected with described first connector.
9. knee joint soft tissue balance measurement apparatus according to claim 2, it is characterised in that also including lock, described lock is connected with described driver, is used for locking or discharge described driver.
10. knee joint soft tissue balance measurement apparatus according to claim 9, it is characterised in that described lock matches with described load indicator, thus locking or discharging described gap indicator and load indicator.
11. knee joint soft tissue balance measurement apparatus according to claim 10, it is characterised in that described lock and described load indicator are engaged by tooth and realize locking.
12. knee joint soft tissue balance measurement apparatus according to claim 2, it is characterized in that, described outward turning indicator includes outward turning scale substrate and outward turning instruction parts, described outward turning scale substrate and described first connector are relatively fixed, described outward turning instruction parts are connected with the described rotating shaft of described movable plate, thus realizing linkage and indicating the anglec of rotation of correspondence.
13. knee joint soft tissue balance measurement apparatus according to claim 12, it is characterized in that, described outward turning indicator also includes STATEMENT OF FEDERALLY SPONSORED, described STATEMENT OF FEDERALLY SPONSORED and described rotating shaft fix, described outward turning instruction parts have linkage portion, described STATEMENT OF FEDERALLY SPONSORED coordinates with described linkage portion, thus realizing the linkage of described outward turning instruction parts and described movable plate.
14. knee joint soft tissue balance measurement apparatus according to claim 2, it is characterized in that, described gap indicator includes gap scale substrate and gap instruction parts, and described gap scale substrate and described matrix are integrative-structure, and described gap instruction parts are connected with described driver.
15. knee joint soft tissue balance measurement apparatus according to claim 14, it is characterized in that, described load indicator includes load scale substrate and load instruction parts, described load scale substrate and described load instruction parts are all connected with described driver, and under the driving of described driver, described load indicates parts and described load scale substrate generation relative motion.
16. knee joint soft tissue balance measurement apparatus according to claim 15, it is characterised in that described driver includes first handle, second handle, the first actuator, the first elastic component, the second actuator and the second elastic component；Described matrix is fixed in one end of described first handle, and one end of described second handle is rotatably coupled described first actuator, and described first handle is connected rotationally with described second handle；Described first elastic component, described second actuator, described second elastic component are stacked in described matrix successively from bottom to up.
17. knee joint soft tissue balance measurement apparatus according to claim 16, it is characterised in that described first connector is connected to described second actuator, and described second connector is connected to described first handle.
18. knee joint soft tissue balance measurement apparatus according to claim 16, it is characterised in that described second actuator includes central part, pair of outer adjutage and external tabs；Described central part is connected with described outside adjutage, and described central part is arranged at the inside of described matrix, and described outside adjutage is sheathed on the outside of matrix, and described external tabs connects described outside adjutage and described first connector respectively.
19. knee joint soft tissue balance measurement apparatus according to claim 18, it is characterised in that described gap instruction parts and described load instruction parts are all arranged on described outside adjutage.
20. knee joint soft tissue balance measurement apparatus according to claim 16, it is characterised in that described load scale substrate and described first actuator fix.
21. knee joint soft tissue balance measurement apparatus according to claim 16, it is characterised in that described matrix also includes the first sliding tray and the second sliding tray, is opened in the both sides of described matrix respectively.
22. knee joint soft tissue balance measurement apparatus according to claim 16, it is characterized in that, described matrix also includes locating dowel, described first elastic component, described second actuator and described second elastic component are sheathed in described locating dowel, described locating dowel and described first actuator fix, and are arranged in described matrix.
23. knee joint soft tissue balance measurement apparatus according to claim 16, it is characterized in that, described matrix also includes locating dowel, described first actuator, described first elastic component, described second actuator and described second elastic component are sheathed in described locating dowel, and described locating dowel is arranged in described matrix.
24. the measuring method that the knee joint soft tissue balance measurement apparatus according to claim 1 carries out, it is characterised in that comprise the steps:
Under knee joint straight configuration, make described datum plate contact proximal tibia cut off face, under the driving of described driver, make described movable plate contact distal femur cut off face；
Reading according to described outward turning indicator for displaying, it may be judged whether need to carry out again osteotomy and/or Soft Tissue Treatment, as otherwise carried out next step, then carry out again osteotomy and/or Soft Tissue Treatment in this way until the reading of described outward turning indicator for displaying is zero；
According to the reading on described matrix, it is thus achieved that the numerical value in the first gap, and according to the reading on described load indicator, it is thus achieved that the numerical value of the first load；
Cut off face from described distal femur and described proximal tibia cuts off and takes out described measurement apparatus between face；
Under knee sprung state, described datum plate is contacted proximal tibia and cuts off face, under the driving of described driver, make described movable plate contact femoral-posterior condyles；
By the postartis thickness in described first gap and selected femoral prosthesis, described femoral-posterior condyles and the proximal tibia face of cutting off are strutted to correct position；Or the numerical value according to the first load, struts described femoral-posterior condyles and tibial plateau to correct position；
Now, according to the reading on described load indicator and gap indicator, it is thus achieved that the numerical value in the second load and the second gap；And
Numerical value according to described first load and the comparative result of the numerical value of described second load, it may be judged whether need further Soft Tissue Treatment；Or the comparative result of the numerical value in the numerical value according to described first gap and described second gap, it may be judged whether need further Soft Tissue Treatment；
Meanwhile, according to the reading in described outward turning indicator, it is thus achieved that the outward turning angle of femoral-posterior condyles.
25. measuring method according to claim 24, it is characterised in that also include: when not carrying out further Soft Tissue Treatment, described knee joint soft tissue balance measurement apparatus is installed osteotomy guider；And by the pilot hole on described osteotomy guider, femoral-posterior condyles hammers into two pieces of positioning needles.
26. a knee joint soft tissue balance measurement apparatus, it is characterised in that including:
Datum plate, movable plate, matrix, driver and gap indicator；
Wherein, described datum plate is fixedly connected to described matrix；Described movable plate is rotatably connected to described driver by rotating shaft, and under the driving of described driver, away from or near described datum plate；Described gap indicator is connected with described driver, for measuring the kneed size stretching gap and gap of going down on one's knees；Described movable plate and described datum plate bias relative to described matrix；Described driver is arranged at described matrix.
27. knee joint soft tissue balance measurement apparatus according to claim 26, it is characterised in that described movable plate and described datum plate are optionally offset to the either side in the both sides of described matrix, to be selectively adapted to left knee joint or right knee joint.
28. knee joint soft tissue balance measurement apparatus according to claim 27, it is characterised in that the upper and lower surface of described movable plate is respectively arranged with locative cue mark.
29. knee joint soft tissue balance measurement apparatus according to claim 26, it is characterized in that, also include osteotomy guider, described osteotomy guider and described datum plate keep being mutually perpendicular to, and keep synchronizing moving with described movable plate, and described osteotomy guider has at least one pair of pilot hole, the line of said two pilot hole is paralleled with described datum plate.
30. knee joint soft tissue balance measurement apparatus according to claim 29, it is characterized in that, also including the first connector and the second connector, described first connector is connected with described driver, and described movable plate is connected with described first connector by described rotating shaft；Described second connector and described datum plate are relatively fixed, and are fixed on described matrix；Described first connector is set to parallel with the second connector.
31. knee joint soft tissue balance measurement apparatus according to claim 30, it is characterised in that described osteotomy guider is removably connected with described first connector.
32. a knee joint soft tissue balance measurement apparatus, it is characterised in that including:
Datum plate, movable plate, matrix, driver, gap indicator and osteotomy guider；
Wherein, described datum plate is fixedly connected to described matrix；Described movable plate is rotatably connected to described driver by rotating shaft, and under the driving of described driver, away from or near described datum plate；Described gap indicator is connected with described driver, for measuring the kneed size stretching gap and gap of going down on one's knees；Described driver is arranged at described matrix；Described osteotomy guider and described datum plate keep being mutually perpendicular to, and keep synchronizing moving with described movable plate, and described osteotomy guider has at least one pair of pilot hole, and the line of said two pilot hole is paralleled with described datum plate.
33. knee joint soft tissue balance measurement apparatus according to claim 32, it is characterized in that, also including the first connector and the second connector, described first connector is connected with described driver, and described movable plate is connected with described first connector by described rotating shaft；Described second connector and described datum plate are relatively fixed, and are fixed on described matrix；Described first connector is set to parallel with described second connector.
34. knee joint soft tissue balance measurement apparatus according to claim 33, it is characterised in that described osteotomy guider is removably connected with described first connector.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810416515.8A CN108836267B (en) | 2015-07-06 | 2015-07-06 | Knee joint soft tissue balance measuring device |
| CN201510390837.6A CN105769119B (en) | 2015-07-06 | 2015-07-06 | Knee joint soft tissue balance measuring device and its measurement method |
| PCT/CN2016/088619 WO2017005169A1 (en) | 2015-07-06 | 2016-07-05 | Knee joint soft tissue balance measurement device and measurement method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510390837.6A CN105769119B (en) | 2015-07-06 | 2015-07-06 | Knee joint soft tissue balance measuring device and its measurement method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810416515.8A Division CN108836267B (en) | 2015-07-06 | 2015-07-06 | Knee joint soft tissue balance measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105769119A true CN105769119A (en) | 2016-07-20 |
| CN105769119B CN105769119B (en) | 2019-03-26 |
Family
ID=56389888
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510390837.6A Active CN105769119B (en) | 2015-07-06 | 2015-07-06 | Knee joint soft tissue balance measuring device and its measurement method |
| CN201810416515.8A Active CN108836267B (en) | 2015-07-06 | 2015-07-06 | Knee joint soft tissue balance measuring device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810416515.8A Active CN108836267B (en) | 2015-07-06 | 2015-07-06 | Knee joint soft tissue balance measuring device |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN105769119B (en) |
| WO (1) | WO2017005169A1 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108378930A (en) * | 2018-05-03 | 2018-08-10 | 中国医学科学院整形外科医院 | A kind of measuring appliance |
| CN108403120A (en) * | 2017-02-10 | 2018-08-17 | 北京纳通医学科技研究院有限公司 | Femur outward turning locator |
| CN108969153A (en) * | 2018-08-09 | 2018-12-11 | 南通市第人民医院 | A kind of knee joint structural equation measuring device and its measurement method |
| CN109745156A (en) * | 2019-01-24 | 2019-05-14 | 付庆鹏 | A kind of gap balancing method knee prosthesis femur survey size mold |
| CN110897644A (en) * | 2019-12-06 | 2020-03-24 | 南京医科大学 | Dynamic soft tissue balance judgment method in total knee joint replacement based on generation countermeasure network |
| CN111134859A (en) * | 2020-01-16 | 2020-05-12 | 福建省立医院 | Knee joint flexion clearance distance measurement balance positioning tool |
| CN111568449A (en) * | 2020-06-02 | 2020-08-25 | 北京爱康宜诚医疗器材有限公司 | Joint soft tissue balance measuring device |
| CN111568448A (en) * | 2020-06-02 | 2020-08-25 | 北京爱康宜诚医疗器材有限公司 | Joint soft tissue balance measuring device |
| CN111759287A (en) * | 2020-08-04 | 2020-10-13 | 北京爱康宜诚医疗器材有限公司 | Joint soft tissue balance measuring device |
| CN113081162A (en) * | 2021-04-28 | 2021-07-09 | 北京力达康科技有限公司 | Patellar surface osteotomy measuring device and knee joint gap measuring device |
| WO2023109105A1 (en) * | 2021-12-14 | 2023-06-22 | 北京天智航医疗科技股份有限公司 | Surgical upper computer for total knee arthroplasty surgery, and total knee arthroplasty surgery system |
| CN110051456B (en) * | 2018-01-19 | 2024-01-19 | 苏州微创关节医疗科技有限公司 | Modularized flexion-extension clearance measurer/tibia prosthesis test mould |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328574B (en) * | 2017-08-04 | 2022-09-27 | 北京大学第三医院 | Knee joint stability and kinematics characteristic testing device |
| CN108451582B (en) * | 2018-03-12 | 2024-09-17 | 长沙市第三医院 | Auxiliary knee joint replacement gap balancing tool |
| CN111281480A (en) * | 2020-03-30 | 2020-06-16 | 北京市春立正达医疗器械股份有限公司 | Knee joint replacement femoral condyle midline positioning guider |
| CN111714166B (en) * | 2020-06-02 | 2022-09-27 | 柴瑞宝 | Multi-functional caliber that struts of orthopedics |
| CN112545722B (en) * | 2020-12-01 | 2023-04-25 | 雷鹏飞 | Knee joint replacement balancer combining osteotomy and gap balance measurement technology |
| CN115040266B (en) * | 2022-05-31 | 2024-10-01 | 北京市春立正达医疗器械股份有限公司 | Knee joint bending gap balancer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200948140Y (en) * | 2006-09-08 | 2007-09-19 | 深圳市福田区中医院 | Means for measuring balance of full knee joint replacing parenchyma |
| CN201299556Y (en) * | 2008-12-03 | 2009-09-02 | 徐辉 | A medial-lateral balance tension measuring device for knee joint |
| US20100100102A1 (en) * | 2008-10-16 | 2010-04-22 | Biomet Manufacturing Corp. | Method and apparatus for constant force tensor/ligament balancer |
| FR2949315B1 (en) * | 2009-08-28 | 2011-09-30 | Coxagone | SURGICAL INSTRUMENT |
| CN203400134U (en) * | 2013-05-11 | 2014-01-22 | 清华大学深圳研究生院 | Measurement device measuring pressure between two force bodies and pressure change |
| CN103519818A (en) * | 2013-10-22 | 2014-01-22 | 山东大学齐鲁医院 | Knee-joint gap balance tester |
| CN204797805U (en) * | 2015-07-06 | 2015-11-25 | 微创骨科医疗科技（苏州）有限公司 | Balanced measuring device of knee joint soft tissue |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7682362B2 (en) * | 2005-02-01 | 2010-03-23 | Smith & Nephew, Inc. | Lockable orientation stylus |
| GB0712290D0 (en) * | 2007-06-25 | 2007-08-01 | Depuy Orthopaedie Gmbh | Surgical instrument |
| GB0909918D0 (en) * | 2009-06-09 | 2009-07-22 | Depuy Ireland | A femoral sizing instrument |
| GB2516674A (en) * | 2013-07-29 | 2015-02-04 | Ramesh Chandra | Orthopaedic Apparatus |
| CN203988371U (en) * | 2014-06-30 | 2014-12-10 | 苏州瑞华医院有限公司 | A kind of osteotomy scale |
| CN204072097U (en) * | 2014-09-04 | 2015-01-07 | 北京大学第三医院 | A kind of medical measuring apparatus for measuring human synovial inner structure size |
-
2015
- 2015-07-06 CN CN201510390837.6A patent/CN105769119B/en active Active
- 2015-07-06 CN CN201810416515.8A patent/CN108836267B/en active Active
-
2016
- 2016-07-05 WO PCT/CN2016/088619 patent/WO2017005169A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200948140Y (en) * | 2006-09-08 | 2007-09-19 | 深圳市福田区中医院 | Means for measuring balance of full knee joint replacing parenchyma |
| US20100100102A1 (en) * | 2008-10-16 | 2010-04-22 | Biomet Manufacturing Corp. | Method and apparatus for constant force tensor/ligament balancer |
| CN201299556Y (en) * | 2008-12-03 | 2009-09-02 | 徐辉 | A medial-lateral balance tension measuring device for knee joint |
| FR2949315B1 (en) * | 2009-08-28 | 2011-09-30 | Coxagone | SURGICAL INSTRUMENT |
| CN203400134U (en) * | 2013-05-11 | 2014-01-22 | 清华大学深圳研究生院 | Measurement device measuring pressure between two force bodies and pressure change |
| CN103519818A (en) * | 2013-10-22 | 2014-01-22 | 山东大学齐鲁医院 | Knee-joint gap balance tester |
| CN204797805U (en) * | 2015-07-06 | 2015-11-25 | 微创骨科医疗科技（苏州）有限公司 | Balanced measuring device of knee joint soft tissue |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108403120A (en) * | 2017-02-10 | 2018-08-17 | 北京纳通医学科技研究院有限公司 | Femur outward turning locator |
| CN108403120B (en) * | 2017-02-10 | 2024-04-05 | 北京纳通医疗科技控股有限公司 | Femur external rotation positioner |
| CN110051456B (en) * | 2018-01-19 | 2024-01-19 | 苏州微创关节医疗科技有限公司 | Modularized flexion-extension clearance measurer/tibia prosthesis test mould |
| CN108378930A (en) * | 2018-05-03 | 2018-08-10 | 中国医学科学院整形外科医院 | A kind of measuring appliance |
| CN108969153A (en) * | 2018-08-09 | 2018-12-11 | 南通市第人民医院 | A kind of knee joint structural equation measuring device and its measurement method |
| CN109745156A (en) * | 2019-01-24 | 2019-05-14 | 付庆鹏 | A kind of gap balancing method knee prosthesis femur survey size mold |
| CN110897644A (en) * | 2019-12-06 | 2020-03-24 | 南京医科大学 | Dynamic soft tissue balance judgment method in total knee joint replacement based on generation countermeasure network |
| CN111134859A (en) * | 2020-01-16 | 2020-05-12 | 福建省立医院 | Knee joint flexion clearance distance measurement balance positioning tool |
| CN111568449A (en) * | 2020-06-02 | 2020-08-25 | 北京爱康宜诚医疗器材有限公司 | Joint soft tissue balance measuring device |
| CN111568448A (en) * | 2020-06-02 | 2020-08-25 | 北京爱康宜诚医疗器材有限公司 | Joint soft tissue balance measuring device |
| CN111759287A (en) * | 2020-08-04 | 2020-10-13 | 北京爱康宜诚医疗器材有限公司 | Joint soft tissue balance measuring device |
| CN113081162A (en) * | 2021-04-28 | 2021-07-09 | 北京力达康科技有限公司 | Patellar surface osteotomy measuring device and knee joint gap measuring device |
| CN113081162B (en) * | 2021-04-28 | 2022-08-05 | 北京力达康科技有限公司 | Patellar surface osteotomy measuring device and knee joint gap measuring device |
| WO2023109105A1 (en) * | 2021-12-14 | 2023-06-22 | 北京天智航医疗科技股份有限公司 | Surgical upper computer for total knee arthroplasty surgery, and total knee arthroplasty surgery system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105769119B (en) | 2019-03-26 |
| CN108836267A (en) | 2018-11-20 |
| WO2017005169A1 (en) | 2017-01-12 |
| CN108836267B (en) | 2021-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105769119A (en) | Knee joint soft tissue balance measuring device and measuring method thereof | |
| CN204797805U (en) | Balanced measuring device of knee joint soft tissue | |
| Lipke et al. | The role of incompetence of the anterior cruciate and lateral ligaments in anterolateral and anteromedial instability. A biomechanical study of cadaver knees. | |
| EP2110077B1 (en) | Device and method for knee ligament strain measurement | |
| LU102707B1 (en) | Squatting bionic device of human lower-limb joint | |
| JP5768053B2 (en) | An external support that is anatomically customized and mobile, its manufacturing method, and the use of an externally attached external support when determining the course of a joint | |
| CA2968167C (en) | Robotic knee testing apparatus and patient and apparatus set-up methods | |
| Haider et al. | Measurements of constraint of total knee replacement | |
| Ghosh et al. | The effect of femoral component rotation on the extensor retinaculum of the knee | |
| US12011285B2 (en) | Robotic joint testing apparatus and coordinate systems for joint evaluation and testing | |
| CN108451582A (en) | A kind of auxiliary knee prosthesis gap poising tool | |
| CN112006691B (en) | Knee joint replacement flexion-extension gap measurement balancing device | |
| Morrey et al. | Strength function after elbow arthroplasty | |
| Komdeur et al. | Dynamic knee motion in anterior cruciate impairment: a report and case study | |
| Ezechieli et al. | The influence of a single-radius-design on the knee stability | |
| Mears et al. | Inter-Rater reliability of clinical testing for laxity after knee arthroplasty | |
| Gabriel et al. | Passive strain distribution in the interosseous ligament of the forearm: implications for injury reconstruction | |
| BR112020015102A2 (en) | DYNAMIC BALANCE SHEET SYSTEM WITH PIN POSITIONING BLOCK | |
| Glasoe et al. | Criterion-related validity of a clinical measure of dorsal first ray mobility | |
| CN213371932U (en) | Joint soft tissue balance measuring device | |
| CN212394934U (en) | Joint soft tissue balance measuring device | |
| Markolf et al. | In vitro measurements of knee stability after bicondylar replacement. | |
| CN209547995U (en) | A kind of joint space struts pressure tester | |
| CN113633443A (en) | Knee joint operation auxiliary device | |
| Kennedy et al. | Medial and Anterior Instability of the Knee: An Anatomical and Clinical Study Using Stress Machines. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |