CN217660172U - Knee joint gap balance measuring device - Google Patents
Knee joint gap balance measuring device Download PDFInfo
- Publication number
- CN217660172U CN217660172U CN202220594853.2U CN202220594853U CN217660172U CN 217660172 U CN217660172 U CN 217660172U CN 202220594853 U CN202220594853 U CN 202220594853U CN 217660172 U CN217660172 U CN 217660172U
- Authority
- CN
- China
- Prior art keywords
- balancer shaft
- knee joint
- measuring device
- paddle
- balance measuring
- 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.)
- Active
Links
Images
Abstract
The utility model relates to the technical field of knee joint gap balance measuring devices, in particular to a knee joint gap balance measuring device, which is characterized by comprising an insertion limit handle, a balancer shaft, a gap width device and a shinbone paddle, wherein the insertion limit handle is fixed above the right side of the balancer shaft, and the gap width device and the shinbone paddle are arranged in the middle part of the balancer shaft; the gap width device and the tibia paddle are fixedly connected through a cylindrical pin and a screw; the lower end of the insertion limiting handle is provided with a first joint which is matched with a first through hole on the right side of the balancer shaft; a hole which can enable the balancer shaft to freely slide is arranged between the gap width device and the tibia paddle; an interface is arranged at the left port of the balancer shaft; a femoral paddle is fixed on the interface of the balancer shaft; and a size adjuster is arranged on the interface of the balancer shaft. The beneficial effects of the utility model are that, optimized the function that the product used, simultaneously can also be accurate, reach the purpose of operation fast effectively.
Description
Technical Field
The utility model belongs to the technical field of knee joint clearance balance measuring device technique and specifically relates to a knee joint clearance balance measuring device.
Background
The balance of the extension and flexion gaps in the total knee replacement is the key of successful operation, most of the surgeons adopt a measuring osteotomy method to perform femoral posterior condylar osteotomy by utilizing a femoral anatomical marking line at present, the method cannot accurately reflect the extension and flexion gaps and the tension of soft tissues at the inner side and the outer side of the knee joint, the flexion gap is easily larger than the extension gap after the operation, the tension of the inner side and the outer side is unbalanced, and the postoperative joint instability is caused, so that the operation failure is caused. The gap balancing device can avoid the situation as much as possible; the original measurement osteotomy method too depends on the normally developed knee joint, and is not suitable for some patients with development deformity.
SUMMERY OF THE UTILITY MODEL
In order to overcome the current deficiency, the utility model provides a knee joint clearance balance measuring device.
The utility model provides a technical scheme that its technical problem adopted is: a knee joint gap balance measuring device is characterized by comprising an insertion limiting handle, a balancer shaft, a gap width device and a tibia paddle, wherein the insertion limiting handle is fixed above the right side of the balancer shaft, and the gap width device and the tibia paddle are arranged in the middle of the balancer shaft; the gap width device and the tibia paddle are fixedly connected through a cylindrical pin and a screw; the lower end of the insertion limiting handle is provided with a first joint, and the first joint is matched with a first through hole on the right side of the balancer shaft; and a hole which can enable the balancer shaft to freely slide is arranged between the gap width device and the tibia paddle.
According to another embodiment of the present invention, further comprising that the balancer shaft is a hollow cylinder, and the surface is provided with evenly distributed scale grooves; the scale groove can be locked by a first button of the gap width gauge.
According to the utility model discloses a further embodiment, further include, the balancer axle left side port is equipped with the interface.
According to another embodiment of the present invention, further comprising a femoral paddle fixed to the interface of the balancer shaft; the lower end of the femur oar is provided with a head joint II matched with the interface of the balancer shaft.
According to another embodiment of the present invention, further comprising a size adjuster provided on the interface of the balancer shaft.
According to the utility model discloses a further embodiment, further include, the size adjuster lower extreme be equipped with interface assorted joint three, the left side is equipped with the screw hole, the rear portion is equipped with two internal thread connection of circular through-hole have marrow chamber pole, marrow chamber pole one end be equipped with screw hole assorted screw thread.
According to another embodiment of the present invention, further comprising, an adjustment measurer is installed in the second through hole; the adjusting measurer comprises an outer sleeve, a guide rod, a nut and a second button; the lower end of the outer sleeve is matched with the through hole, the upper end of the outer sleeve is provided with a second button, and a guide rod is inserted in the middle of the outer sleeve; and a nut is arranged on the left side of the guide rod.
According to another embodiment of the present invention, further comprising an inner hexagonal screw hole is provided above the gap width device; the inner hexagonal screw hole is matched and fixed with the fourth joint at the lower end of the pound value meter; and a fifth connector matched with the notch of the T-shaped quick-change handle is arranged at the upper end of the weighing value meter.
According to another embodiment of the present invention, further comprising that the T-shaped quick-change handle comprises a handle, a quick-change rod, a sleeve and a sliding sleeve; a quick-change rod is fixed at the lower end of the handle; the lower end of the quick-change rod is welded with a sleeve, and the bottom of the quick-change rod is provided with a notch; and a sliding sleeve is arranged outside the sleeve.
The beneficial effects of the utility model are that, be applicable to the patient that anatomical landmarks are difficult to pinpoint, articular deformity, cut the bone based on the tibial plateau level, confirm the rectangle that equals through suitable soft tissue tension and stretch out the clearance of buckling. The function of using the product is optimized, and meanwhile, the purpose of operation can be accurately, quickly and effectively achieved.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural view of the present invention in a straightened position;
fig. 2 is a schematic structural view of the present invention in a flexed and extended position;
FIG. 3 is an assembled view of the T-shaped quick-release handle and the weight scale;
FIG. 4 is a schematic view of the structure of the insertion limiting handle;
FIG. 5 is a left side view of the gap width finder;
fig. 6 is a left side view of a tibial paddle;
FIG. 7 is a schematic view of a femoral paddle;
FIG. 8 is a left side view of the sizer;
FIG. 9 is a front view of the sizer;
FIG. 10 is a schematic diagram of the configuration of the adjustment gauge;
FIG. 11 is a schematic view of the structure of the pound value.
In the figure, 1, a plug-in limit handle, 1-1, a first connector, 2, a balancer shaft, 2-1, a first through hole, 2-2, a connector, 2-3, a scale groove, 3, a gap width device, 3-1, a first button, 3-2 and an inner hexagonal screw hole are arranged; 4. the device comprises a tibia paddle 5, a femur paddle 5-1, a joint II, a joint 6, a size adjuster 6-1, a joint III, a threaded hole 6-3, a through hole II, a through hole 7, a medullary cavity rod 8, an adjustment measurer 8-1, an outer sleeve 8-2, a guide rod 8-3, a nut 8-4 and a second button; 9. the device comprises a balance weight 9-1, four joints, 9-2 joints, five joints, 10, a T-shaped quick-change handle 10-1, a notch 10-2, a handle 10-3, a quick-change rod 10-4, a sleeve 10-5 and a sliding sleeve.
Detailed Description
As shown in fig. 1, the present invention is a schematic structural diagram of the knee joint gap balance measuring device, which is characterized in that the knee joint gap balance measuring device comprises an insertion limit handle 1, a balancer shaft 2, a gap width device 3 and a tibia paddle 4, wherein the insertion limit handle 1 is fixed above the right side of the balancer shaft 2, and the gap width device 3 and the tibia paddle 4 are arranged in the middle part; the gap width device 3 and the tibia paddle 4 are fixedly connected through a cylindrical pin and a screw; the lower end of the insertion limiting handle 1 is provided with a joint I1-1, and the joint I1-1 is matched with a through hole I2-1 on the right side of the balancer shaft 2; a hole which can enable the balancer shaft 2 to freely slide is arranged between the gap width device 3 and the tibia paddle 4.
Specifically, the insertion limit handle 1 is used for connecting the balancer shaft 2, and has an auxiliary supporting function in the operation process; the tibia paddle 4 is used for connecting the gap width device 3 and the balancer shaft 2, and is used for measuring the straightening gap and the force value in the straightening state in the operation process, so that the balance of the inner and outer side gaps in the straightening state is guaranteed.
According to another embodiment of the present invention, further comprising that the balancer shaft 2 is a hollow cylinder, and the surface is provided with evenly distributed scale grooves 2-3; the scale groove 2-3 can be locked by a first button 3-1 of the gap width gauge 3.
According to another embodiment of the present invention, it further comprises that the port on the left side of the balancer shaft 2 is provided with an interface 2-2.
According to another embodiment of the present invention, further comprising a femoral paddle 5 fixed to the interface 2-2 of the balancer shaft 2; the lower end of the femur oar 5 is provided with a head joint II 5-1 which is matched with the interface 2-2 of the balancer shaft 2.
According to another embodiment of the present invention, it further comprises a size adjuster 6 provided on the interface 2-2 of the balancer shaft 2.
According to the utility model discloses another embodiment, further include, the size adjuster 6 lower extreme is equipped with and connects three 6-1 with interface 2-2 assorted, and the left side is equipped with screw hole 6-2, and the rear portion is equipped with two circular through-holes two 6-3.
According to the utility model discloses a another embodiment, further include, threaded connection has marrow chamber pole 7 in screw hole 6-2, 7 one end of marrow chamber pole is equipped with the screw thread with screw hole 6-2 assorted.
Specifically, the medullary cavity rod 7 is used for connecting the size adjuster 6 to be inserted into the medullary cavity of the femur for positioning during operation.
According to another embodiment of the present invention, further comprising an adjustment measuring device 8 installed in the second through hole 6-3; the adjusting measurer 8 comprises an outer sleeve 8-1, a guide rod 8-2, a screw cap 8-3 and a second button 8-4; the lower end of the outer sleeve 8-1 is matched with the second through hole 6-3, the upper end of the outer sleeve is provided with a second button 8-4, and a guide rod 8-2 is inserted in the middle of the outer sleeve; and a screw cap 8-3 is arranged on the left side of the guide rod 8-2.
Specifically, the adjustment gauge 8 is used in conjunction with the sizer 6, which is used during the procedure to measure and select the specifications of the prosthesis; the size adjuster 6 is used for connecting the medullary cavity rod 7, the adjustment measurer 8 and the balancer shaft 2, is used for straightening a gap or a force value in a bending state and a straightening state in an operation process, positioning the position of the osteotomy plate, and measuring and selecting the specification of the prosthesis by using the adjustment measurer 8.
According to another embodiment of the present invention, further comprising an inner hexagonal screw hole 3-2 is provided above the gap width device 3; the inner hexagonal screw hole 3-2 is matched and fixed with a fourth end joint 9-1 of the pound value meter 9; the upper end of the pound value meter 9 is provided with a connector five 9-5 matched with a notch 10-1 of a T-shaped quick-change handle 10.
According to another embodiment of the present invention, further comprising that the T-shaped quick-change handle 10 comprises a handle 10-2, a quick-change rod 10-3, a sleeve 10-4 and a sliding sleeve 10-5; a quick-change rod 10-3 is fixed at the lower end of the handle 10-2; the lower end of the quick-change rod 10-3 is welded with a sleeve 10-4, and the bottom of the quick-change rod is provided with a notch 10-1; and a sliding sleeve 10-5 is arranged outside the sleeve 10-4.
During the specific operation process, when in use, the tibia paddle 4 is connected to the gap width device 3 and locked, the first button 3-1 on the gap width device 3 is pressed, the balancer shaft 2 is installed, the insertion limiting handle 1 is inserted into the balancer shaft 2, the femur paddle 5 is inserted into the upper end of the balancer shaft 2, after the assembly is completed, the first button 3-1 on the gap width device 3 is pressed, the gap width device 3 is slid to the rightmost end of the balancer shaft 2, the T-shaped quick-change handle 10 and the pound value meter 9 which are fixedly connected are used, the pound value meter 9 is inserted into the hexagonal screw hole 3-2 in the gap width device 3, the T-shaped quick-change handle 10 is rotated, the straightening gap of a patient is measured after the inside and outside gaps are balanced, and the reading on the pound value meter 9 is recorded. The femoral bone paddle 5 is detached, the medullary cavity rod 7 and the adjusting measurer 8 are sequentially arranged in the size adjuster 6 and then are integrally arranged in the balancer shaft 2, the same straightening gap or force value as that in the straightening state is obtained, the position of the osteotomy plate is positioned, and the adjusting measurer 8 is used for measuring and selecting the specifications of the prosthesis.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A knee joint gap balance measuring device is characterized by comprising an insertion limiting handle (1), a balancer shaft (2), a gap width device (3) and a tibia paddle (4), wherein the insertion limiting handle (1) is fixed above the right side of the balancer shaft (2), and the gap width device (3) and the tibia paddle (4) are arranged in the middle of the balancer shaft; the gap width device (3) and the tibia paddle (4) are fixedly connected through a cylindrical pin and a screw; the lower end of the insertion limiting handle (1) is provided with a first joint (1-1), and the first joint (1-1) is matched with a first through hole (2-1) on the right side of the balancer shaft (2); a hole which can enable the balancer shaft (2) to freely slide is arranged between the gap width device (3) and the tibia paddle (4).
2. The knee joint gap balance measuring device according to claim 1, wherein the balancer shaft (2) is a hollow cylinder, and the surface of the balancer shaft is provided with evenly distributed scale grooves (2-3); the scale groove (2-3) can be locked by a first button (3-1) of the gap width gauge (3).
3. The knee joint gap balance measuring device according to claim 1, wherein the balancer shaft (2) is provided with an interface (2-2) at a left side port.
4. The knee joint gap balance measuring device according to claim 3, wherein a femoral paddle (5) is fixed to the interface (2-2) of the balancer shaft (2); the lower end of the femur oar (5) is provided with a head joint II (5-1) which is matched with the interface (2-2) of the balancer shaft (2).
5. The knee joint gap balance measuring device according to claim 3, wherein a size adjuster (6) is provided on the interface (2-2) of the balancer shaft (2).
6. The knee joint gap balance measuring device according to claim 5, wherein the size adjuster (6) is provided with a third connector (6-1) at the lower end thereof, which is matched with the interface (2-2), a threaded hole (6-2) at the left side thereof, and two circular through holes (6-3) at the rear part thereof.
7. The knee joint gap balance measuring device according to claim 6, wherein a medullary cavity rod (7) is connected to the threaded hole (6-2) in a threaded manner, and a thread matched with the threaded hole (6-2) is arranged at one end of the medullary cavity rod (7).
8. The knee joint gap balance measuring device according to claim 6, wherein an adjustment measurer (8) is installed in the second through hole (6-3); the adjusting measurer (8) comprises an outer sleeve (8-1), a guide rod (8-2), a screw cap (8-3) and a second button (8-4); the lower end of the outer sleeve (8-1) is matched with the second through hole (6-3), the upper end of the outer sleeve is provided with a second button (8-4), and a guide rod (8-2) is inserted in the middle of the outer sleeve; and a nut (8-3) is arranged on the left side of the guide rod (8-2).
9. The knee joint gap balance measuring device according to claim 1, wherein an inner hexagonal screw hole (3-2) is arranged above the gap width device (3); the inner hexagonal screw hole (3-2) is matched and fixed with a joint IV (9-1) at the lower end of the pound value meter (9); the upper end of the pound value meter (9) is provided with a fifth connector (9-5) matched with the notch (10-1) of the T-shaped quick-change handle (10).
10. The knee joint gap balance measuring device according to claim 9, wherein the T-shaped quick-change handle (10) comprises a handle (10-2), a quick-change rod (10-3), a sleeve (10-4) and a sliding sleeve (10-5); a quick-change rod (10-3) is fixed at the lower end of the handle (10-2); the lower end of the quick-change rod (10-3) is welded with a sleeve (10-4), and the bottom of the quick-change rod is provided with a notch (10-1); a sliding sleeve (10-5) is arranged outside the sleeve (10-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220594853.2U CN217660172U (en) | 2022-03-18 | 2022-03-18 | Knee joint gap balance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220594853.2U CN217660172U (en) | 2022-03-18 | 2022-03-18 | Knee joint gap balance measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217660172U true CN217660172U (en) | 2022-10-28 |
Family
ID=83731659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220594853.2U Active CN217660172U (en) | 2022-03-18 | 2022-03-18 | Knee joint gap balance measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217660172U (en) |
-
2022
- 2022-03-18 CN CN202220594853.2U patent/CN217660172U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9962172B2 (en) | Ligament balancer and drill guide | |
| US5569261A (en) | Distal femoral cutting guide apparatus with anterior or posterior referencing for use in knee joint replacement surgery | |
| US5720752A (en) | Distal femoral cutting guide apparatus with anterior or posterior referencing for use in knee joint replacement surgery | |
| Jazrawi et al. | The effect of stem modularity and mode of fixation on tibial component stability in revision total knee arthroplasty | |
| Mullaji et al. | A comparison of coronal plane axial femoral relationships in Asian patients with varus osteoarthritic knees and healthy knees | |
| CA2201800C (en) | Method and apparatus for locating transepicondylar line in a joint that defines transverse action for a motion | |
| US9681963B2 (en) | Bone sizing guide | |
| US11033281B2 (en) | Knee resection and gap balancing instruments and techniques for kinematic alignment | |
| CN111759397A (en) | Distal bone defect of femoral condyle cuts bone locator | |
| GB2516674A (en) | Orthopaedic Apparatus | |
| CN217660172U (en) | Knee joint gap balance measuring device | |
| CN112155653B (en) | Multifunctional femur osteotomy positioner | |
| CN211409545U (en) | Thighbone condyle measurer | |
| CN111643195A (en) | Knee joint tissue balancer | |
| Cooper et al. | Factors affecting isometry of endoscopic anterior cruciate ligament reconstruction: the effect of guide offset and rotation | |
| Ray et al. | Critical evaluation of anterior drawer measurement methods in the ankle. | |
| CN112545722B (en) | Knee joint replacement balancer combining osteotomy and gap balance measurement technology | |
| Pillard et al. | Evaluation of a new method to determine the tibial tuberosity advancement distance required to reduce the patellar tendon-tibial plateau angle to 90 with the modified Maquet technique in dogs | |
| CN111134859A (en) | Knee joint flexion clearance distance measurement balance positioning tool | |
| CN219700215U (en) | Knee joint balancer | |
| CN213249800U (en) | Knee joint replacement eccentric multi-size millimeter-distance gap measurer | |
| CN211610108U (en) | Knee joint flexion clearance distance measurement balance positioning tool | |
| CN211674609U (en) | Femoral posterior condyle external rotation angle measurer | |
| Harding et al. | The importance of femoral intramedullary entry point in knee arthroplasty | |
| CN217696864U (en) | Multifunctional knee joint gap balancer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |