CN220459456U - Novel knee joint pressure measuring instrument for knee joint replacement - Google Patents
Novel knee joint pressure measuring instrument for knee joint replacement Download PDFInfo
- Publication number
- CN220459456U CN220459456U CN202321700739.4U CN202321700739U CN220459456U CN 220459456 U CN220459456 U CN 220459456U CN 202321700739 U CN202321700739 U CN 202321700739U CN 220459456 U CN220459456 U CN 220459456U
- Authority
- CN
- China
- Prior art keywords
- knee joint
- pressure
- pressure sensor
- knee
- novel
- 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
- 210000000629 knee joint Anatomy 0.000 title claims abstract description 62
- 238000004891 communication Methods 0.000 claims abstract description 21
- 210000002303 tibia Anatomy 0.000 claims abstract description 6
- 210000003127 knee Anatomy 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 238000011882 arthroplasty Methods 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 230000003044 adaptive effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000007812 deficiency Effects 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 abstract description 3
- 241000463219 Epitheca Species 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 210000004872 soft tissue Anatomy 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 208000012659 Joint disease Diseases 0.000 description 2
- 208000003947 Knee Osteoarthritis Diseases 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 201000008482 osteoarthritis Diseases 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011883 total knee arthroplasty Methods 0.000 description 2
- 208000006820 Arthralgia Diseases 0.000 description 1
- 208000002193 Pain Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000013150 knee replacement Methods 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 206010043827 tibia fracture Diseases 0.000 description 1
Landscapes
- Prostheses (AREA)
Abstract
The utility model discloses a novel knee joint pressure measuring instrument for knee joint replacement, and relates to the technical field of medical instruments. This a novel knee joint pressure measuring apparatu for knee joint replacement is accomplished the back through the artificial knee joint replacement osteotomy, place this knee joint pressure measuring device between patient's knee joint femoral prosthesis and shin bone prosthesis, then activity patient knee joint is the motion of buckling and stretching, pressure sensor detects pressure this moment, main control chip obtains pressure sensor's pressure data and sends through wireless communication module, doctor obtains wireless communication module's knee joint pressure data through outside receiving device, thereby carry out adaptive treatment to the patient, high accuracy through the instrument detects and realizes accurate atress judgement, even not the doctor that experience is very abundant, also can accurate effectual judgement state of an illness, the problem of professional medical personnel deficiency has been slowed down.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a novel knee joint pressure measuring instrument for knee joint replacement.
Background
In knee joint diseases, knee osteoarthritis is a major cause of pain in the legs and feet of elderly patients due to degeneration of the knee joint. As the population ages increasingly, the number of patients suffering from knee osteoarthritis continues to rise.
In the aspect of knee joint treatment, total knee arthroplasty is one of the more successful operation methods for treating knee joint diseases at present, a femoral prosthesis is used for replacing a femoral surface in operation, a tibial prosthesis and a tibial gasket are used for replacing a tibial surface, and a contact surface between the femoral prosthesis and the tibial gasket forms a knee joint plane after operation. The total knee arthroplasty can relieve the knee joint pain of the patient and greatly improve the life quality of the patient. However, the knee joint is a complex joint of the human body, and the difficulty of the total knee replacement operation is self-evident. Besides accurate osteotomy, correct ligament loosening and soft tissue balancing are the key of the operation, so that the loosening of soft tissues around a tibial plateau is particularly paid attention to in the operation, proper tightness of the knee joint is ensured, the internal and external lateral pressures are as same as possible, a doctor with special experience is required to judge, when the traditional auxiliary soft tissue balancing device is used, the area covered by an internal sensor is often smaller, so that the measurement of the knee joint pressure is inaccurate, meanwhile, the shell of the traditional auxiliary soft tissue balancing device is made of hard materials and integrally formed, and a layer of flexible soft rubber is covered on the upper shell of some auxiliary soft tissue balancing devices, so that the loss of the pressure is effectively reduced, but the manufacturing process of the auxiliary soft tissue balancing device is complex and the cost is higher.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a novel knee joint pressure measuring instrument for knee joint replacement, which solves the problems of inaccurate detection effect, insufficient medical staff and high manufacturing cost of the existing detection device.
In order to achieve the above purpose, the utility model is realized by the following technical scheme: a novel knee joint pressure measuring apparatu for knee joint replacement art, including epitheca and inferior valve, its characterized in that: the upper shell and the lower shell are connected together through a sealing ring, a hollow cavity is formed inside the upper shell and the lower shell after being connected and sealed, the surface of the cavity is provided with a pressure control unit, the pressure control unit comprises a main control chip, a wireless communication module and a plurality of pressure sensors, the pressure sensors are fixed on two sides of the cross section of the cavity, the pressure sensors are also fixed on the lower shell, the main control chip is respectively connected with the wireless communication module through a circuit and the pressure sensors, the shape of the outer surface of the upper shell is matched with the shape of the bone-cutting surface of the tibia, and the two sides of the inner part of the upper shell are respectively provided with an extrusion part, and the extrusion parts and the pressure sensors are in contact through media.
Preferably, a pressing plate is arranged between the pressing part and the pressure sensor, the pressing plate is composed of a metal plate and force transmission rubber, fixing holes matched with the pressure sensors in number and position are formed in the metal plate, the force transmission rubber is paved in the fixing holes, and the force transmission rubber is attached to a force sensing area of the pressure sensor.
Preferably, a balance plate is fixed in the lower shell, the pressure sensor is placed on the surface of the balance plate, a plurality of support ribs are transversely and longitudinally interweaved and uniformly distributed in the two side areas of the lower shell, a support surface is formed at the top of each support rib, and the balance plate is placed on the support surface.
Preferably, the inner parts of the upper shell and the lower shell are provided with control circuit boards, the surfaces of the control circuit boards are provided with a main control chip and a wireless communication module, and the surfaces of the lower shell are provided with buckles.
Preferably, a battery is arranged on the surface of the control circuit board and used for supplying power to the main control chip and the pressure sensor, and a copper leakage area is reserved on the control circuit board.
Preferably, the upper shell, the sealing ring and the lower shell are fixedly connected in an adhesive mode.
Advantageous effects
The present utility model provides a novel knee pressure gauge for knee arthroplasty. Compared with the prior art, the method has the following beneficial effects:
(1) This a novel knee joint pressure measuring apparatu for knee joint replacement is accomplished the back through the artificial knee joint replacement osteotomy, place this knee joint pressure measuring device between patient's knee joint femoral prosthesis and shin bone prosthesis, then activity patient knee joint is the motion of buckling and stretching, pressure sensor detects pressure this moment, main control chip obtains pressure sensor's pressure data and sends through wireless communication module, doctor obtains wireless communication module's knee joint pressure data through outside receiving device, thereby carry out adaptive treatment to the patient, high accuracy through the instrument detects and realizes accurate atress judgement, even not the doctor that experience is very abundant, also can accurate effectual judgement state of an illness, the problem of professional medical personnel deficiency has been slowed down.
(2) The novel knee joint pressure measuring instrument for knee joint replacement has the advantages of being capable of measuring knee joint pressure in total knee joint replacement, covering a larger effective measuring area, simultaneously measuring pressure of internal and external condyles, simultaneously measuring the knee joint pressure accurately, being easy to manufacture, low in cost and the like.
Drawings
FIG. 1 is a perspective view of the present utility model;
FIG. 2 is a front cross-sectional view of the present utility model;
FIG. 3 is a side cross-sectional view of the present utility model;
FIG. 4 is an enlarged view of area A of FIG. 3 in accordance with the present utility model;
FIG. 5 is a disassembled perspective view of the present utility model;
FIG. 6 is a perspective view of a pressure control unit of the present utility model shown in an exploded configuration;
fig. 7 is a flow chart of the operation of the pressure control unit of the present utility model.
In the figure: the device comprises a 1-upper shell, a 101-extrusion part, a 2-pressure control unit, a 201-battery seat, a 202-battery, a 203-pressing plate, a 2031-metal plate, 2032-force transmission rubber, a 204-control circuit board, a 2041-copper leakage area, a 2042-main control chip, a 205-pressure sensor, a 2051-force sensing area, a 206-balance plate, a 3-sealing ring, a 4-lower shell, a 401-buckle, 402-supporting ribs and a 403-supporting surface.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-7, the present utility model provides two technical solutions:
example 1
The utility model provides a novel knee joint pressure measuring apparatu for knee joint replacement, including epitheca 1 and inferior valve 4, epitheca 1 and inferior valve 4 link together through sealing washer 3, sealing washer 3 is made by rubber, the inside cavity chamber that forms after epitheca 1 and inferior valve 4 connect seal, the surface of cavity is provided with pressure control unit 2, pressure control unit 2 includes main control chip 2042, wireless communication module and a plurality of pressure sensor 205, pressure sensor 205 symmetric distribution is in the cross section both sides of cavity, the cross section both sides of cavity are all fixed with pressure sensor 205, pressure sensor 205 is also fixed on inferior valve 4, pressure sensor 205 is supported by inferior valve 4, main control chip 2042 is connected with wireless communication module electricity through circuit and pressure sensor 205 respectively, main control chip 2042 receives the pressure data of pressure sensor 205 collection, and send these data through wireless communication module, epitheca 1 surface shape and tibia bone face looks adaptation, the inside both sides of epitheca 1 all are equipped with squeeze 101, squeeze 101 and pressure sensor 205 are film pressure sensor through the medium contact, when epitheca 1 receives pressure, this pressure is given corresponding pressure sensor 205 via squeeze 101.
Example two
The novel knee joint pressure measuring instrument for knee joint replacement comprises an upper shell 1 and a lower shell 4, wherein the upper shell 1, a sealing ring 3 and the lower shell 4 are fixedly connected in an adhesive mode, the upper shell 1 and the lower shell 4 are connected together through the sealing ring 3, a control circuit board 204 is arranged in the upper shell 1 and the lower shell 4, a battery 202 is arranged on the surface of the control circuit board 204 and is used for supplying power to a main control chip 2042 and a pressure sensor 205, a copper leakage area 2041 is reserved on the control circuit board 204, a battery 202 is arranged on the control circuit board 204 and is used for supplying power to the main control chip 2042 and the pressure sensor 205, a voltage output end of the battery 202 is electrically connected with a voltage input end of the main control chip 2042 and a voltage input end of the pressure sensor 205, a battery seat 201 is welded on the control circuit board 204, the battery 202 is clamped on the battery seat 201 and is communicated with the copper leakage area 2041 to form a power supply loop, the pressure control device comprises a main control chip 2042, a pressure sensor 205, a buckle 401, a pressure control unit 2, a pressure sensor 205 and a control circuit board 204, wherein the main control chip 2042 and the wireless communication module are arranged on the surface of the control circuit board 204, the buckle 401 is used for fixing the control circuit board 204, the sealing ring 3 is made of rubber, a hollow cavity is formed inside the upper shell 1 and the lower shell 4 after the upper shell 1 and the lower shell 4 are connected and sealed, the pressure control unit 2 comprises the main control chip 2042, the wireless communication module and the pressure sensor 205, the knee joint pressure measuring device is placed between a knee joint femoral prosthesis and a tibia prosthesis of a patient after the artificial knee joint replacement bone cutting is completed, then the knee joint of the patient is moved to bend and stretch, the pressure sensor 205 detects pressure, the main control chip 2042 obtains pressure data of the pressure sensor 205 and sends out through the wireless communication module, the doctor obtains the knee joint pressure data sent by the wireless communication module through the external receiving device, thereby carrying out adaptive treatment on the patient, realizing accurate stress judgment through high-precision detection of the instrument, accurately and effectively judging the illness state even if not a doctor with quite abundant experience, relieving the problem of deficiency of professional medical staff, symmetrically distributing the pressure sensors 205 on two sides of the cross section of the cavity, both sides of the cross section of the cavity are fixedly provided with the pressure sensors 205, the pressure sensors 205 are also fixed on the lower shell 4, the inside of the lower shell 4 is fixedly provided with the balance plate 206, the pressure sensors 205 are placed on the surface of the balance plate 206, a plurality of support ribs 402 are transversely and longitudinally interweaved and uniformly distributed on the two side areas of the lower shell 4, the tops of the support ribs 402 form a support surface 403, the balance plate 206 is placed on the support surface 403, the pressure sensors 205 are supported by the lower shell 4, the main control chip 2042 is respectively and electrically connected with the wireless communication module through a circuit and the pressure sensor 205, the main control chip 2042 receives pressure data acquired by the pressure sensor 205 and sends the data through the wireless communication module, the shape of the outer surface of the upper shell 1 is matched with the shape of the tibia bone fracture surface, two sides of the inner part of the upper shell 1 are respectively provided with an extrusion part 101, a pressing plate 203 is arranged between the extrusion part 101 and the pressure sensor 205, the extrusion part 101 and the pressure sensor 205 are contacted through the pressing plate 203 to transmit force information, the pressing plate 203 is composed of a metal plate 2031 and force transmission rubber 2032, the metal plate 2031 is provided with fixing holes matched with the pressure sensor 205 in number and position, the force transmission rubber 2032 is paved in the fixing holes, the force transmission rubber 2032 is attached to a force sensing area 2051 of the pressure sensor 205, the extrusion part 101 is contacted with the pressure sensor 205 through a medium, the pressure sensor 205 is a film pressure sensor, when the upper shell 1 is stressed, the pressure is transmitted to the corresponding pressure sensor 205 through the pressing part 101, and the novel knee joint pressure measuring instrument for knee joint replacement has the advantages of being capable of measuring knee joint pressure in total knee joint replacement, covering a larger effective measuring area, simultaneously measuring the pressure of internal and external condyles, simultaneously measuring the pressure of the knee joint, along with easy manufacturing, low cost and the like.
And all that is not described in detail in this specification is well known to those skilled in the art.
When the artificial knee joint replacement osteotomy device is in operation, after the artificial knee joint replacement osteotomy is completed, the knee joint pressure measuring device is placed between a knee joint femoral prosthesis and a tibial prosthesis of a patient, then the knee joint of the patient is moved to conduct flexion and extension movements, at the moment, the pressure sensor 205 detects pressure, the main control chip 2042 obtains pressure data of the pressure sensor 205 and sends the pressure data through the wireless communication module, and a doctor obtains the knee joint pressure data sent by the wireless communication module through an external receiving device, so that the patient is subjected to adaptive treatment.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. Novel knee joint pressure measuring instrument for knee joint replacement, including upper shell (1) and inferior valve (4), its characterized in that: the upper shell (1) and the lower shell (4) are connected together through a sealing ring (3), a hollow cavity is formed inside the upper shell (1) and the lower shell (4) after being connected and sealed, and a pressure control unit (2) is arranged on the surface of the cavity;
the pressure control unit (2) comprises a main control chip (2042), a wireless communication module and a plurality of pressure sensors (205), wherein the pressure sensors (205) are fixed on two sides of the cross section of the cavity, the pressure sensors (205) are also fixed on the lower shell (4), the main control chip (2042) is electrically connected with the wireless communication module through circuits and the pressure sensors (205) respectively, the shape of the outer surface of the upper shell (1) is matched with the shape of the tibia bone section, the two sides of the inner portion of the upper shell (1) are respectively provided with an extrusion part (101), and the extrusion parts (101) and the pressure sensors (205) are in contact with each other through media.
2. The novel knee pressure gauge for knee arthroplasty of claim 1 wherein: the pressure sensor is characterized in that a pressing plate (203) is arranged between the pressing part (101) and the pressure sensor (205), the pressing plate (203) is composed of a metal plate (2031) and force transmission rubber (2032), fixing holes matched with the pressure sensor (205) in number and position are formed in the metal plate (2031), the force transmission rubber (2032) is paved in the fixing holes, and the force transmission rubber (2032) is attached to a force sensing area (2051) of the pressure sensor (205).
3. The novel knee pressure gauge for knee arthroplasty of claim 2 wherein: the inside of inferior valve (4) is fixed with balance board (206), pressure sensor (205) are placed on the surface of balance board (206), a plurality of supporting ribs (402) of horizontal and vertical interweaving equipartition in inferior valve (4) both sides region, supporting rib (402) top forms holding surface (403), balance board (206) are placed on holding surface (403).
4. A novel knee pressure gauge for knee arthroplasty according to claim 3, wherein: the inner parts of the upper shell (1) and the lower shell (4) are provided with a control circuit board (204), the surface of the control circuit board (204) is provided with a main control chip (2042) and a wireless communication module, and the surface of the lower shell (4) is provided with a buckle (401).
5. The novel knee pressure gauge for knee arthroplasty of claim 4 wherein: the surface of the control circuit board (204) is provided with a battery (202) for supplying power to the main control chip (2042) and the pressure sensor (205), and a copper leakage area (2041) is reserved on the control circuit board (204).
6. The novel knee pressure gauge for knee arthroplasty of claim 1 wherein: the upper shell (1), the sealing ring (3) and the lower shell (4) are fixedly connected in an adhesive mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321700739.4U CN220459456U (en) | 2023-06-30 | 2023-06-30 | Novel knee joint pressure measuring instrument for knee joint replacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321700739.4U CN220459456U (en) | 2023-06-30 | 2023-06-30 | Novel knee joint pressure measuring instrument for knee joint replacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220459456U true CN220459456U (en) | 2024-02-09 |
Family
ID=89780763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321700739.4U Active CN220459456U (en) | 2023-06-30 | 2023-06-30 | Novel knee joint pressure measuring instrument for knee joint replacement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220459456U (en) |
-
2023
- 2023-06-30 CN CN202321700739.4U patent/CN220459456U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103565438B (en) | Ligament balance regulates auxiliary device and knee joint bending thereof and outward turning angle computation method | |
| US8197549B2 (en) | System and method for prosthetic fitting and balancing in joints | |
| Mündermann et al. | In vivo knee loading characteristics during activities of daily living as measured by an instrumented total knee replacement | |
| Dumbleton et al. | Dynamic interface pressure distributions of two transtibial prosthetic socket concepts. | |
| Johnston et al. | Measurement of hip-joint motion during walking: evaluation of an electrogoniometric method | |
| Von Eisenhart et al. | Quantitative determination of joint incongruity and pressure distribution during simulated gait and cartilage thickness in the human hip joint | |
| Kim et al. | Strain distribution in the proximal human femur: an in vitro comparison in the intact femur and after insertion of reference and experimental femoral stems | |
| CN109708782B (en) | Knee joint prosthesis gasket three-dimensional force sensor and contact stress measuring method thereof | |
| JP2012500667A (en) | Force sensing method for partial and total knee arthroplasty | |
| CN105832448A (en) | Intelligent knee joint tibia platform test pad module | |
| CN202740012U (en) | Ligament balance regulation auxiliary device | |
| CN110638476A (en) | Gap-adjustable knee joint pressure measuring device for total knee joint replacement | |
| CN220459456U (en) | Novel knee joint pressure measuring instrument for knee joint replacement | |
| CN113116353A (en) | Pressure measurement system and pressure measurement method for knee joint replacement surgery | |
| CN109009038A (en) | Health monitoring shoes | |
| CN211187302U (en) | Gap-adjustable knee joint pressure measuring device for total knee joint replacement | |
| CN215584483U (en) | Adjustable knee joint pressure measuring device for total knee joint replacement | |
| CN116530975A (en) | Device and method for evaluating knee joint unicondylar pressure and stress point movement track | |
| CN213641423U (en) | Knee joint pulley pressure sensing type thighbone examination mould | |
| CN220423978U (en) | Soft tissue pressure measuring device in total knee replacement operation | |
| CN111214316A (en) | Artificial hip joint pressure measuring instrument | |
| CN219021208U (en) | Knee joint pressure measuring device | |
| CN219700214U (en) | Gap measurement and soft tissue balance pressure test equipment for knee joint replacement | |
| CN221013282U (en) | Knee joint pressure measuring device with independent measurement of inner side and outer side | |
| KR100446075B1 (en) | Pulse counter based on bioelectrical impedance analysis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |