CN110623702B - Osteotomy measuring device - Google Patents
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- CN110623702B CN110623702B CN201910979251.1A CN201910979251A CN110623702B CN 110623702 B CN110623702 B CN 110623702B CN 201910979251 A CN201910979251 A CN 201910979251A CN 110623702 B CN110623702 B CN 110623702B
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- 238000005259 measurement Methods 0.000 claims abstract description 87
- 238000012545 processing Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000013500 data storage Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 12
- 238000001914 filtration Methods 0.000 description 8
- 210000000988 bone and bone Anatomy 0.000 description 7
- 210000003141 lower extremity Anatomy 0.000 description 6
- 210000000689 upper leg Anatomy 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 238000007781 pre-processing Methods 0.000 description 3
- 238000011883 total knee arthroplasty Methods 0.000 description 3
- 210000003423 ankle Anatomy 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000000629 knee joint Anatomy 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000011882 arthroplasty Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 210000004417 patella Anatomy 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 210000002303 tibia Anatomy 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1657—Bone breaking devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
- A61B17/1675—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the knee
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00017—Electrical control of surgical instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/061—Measuring instruments not otherwise provided for for measuring dimensions, e.g. length
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/067—Measuring instruments not otherwise provided for for measuring angles
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Veterinary Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
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- Orthopedic Medicine & Surgery (AREA)
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- Surgical Instruments (AREA)
Abstract
The application provides a measuring device of osteotomy volume, the device includes: the measuring structure comprises a measuring body part, a ranging module, a sliding measuring module and an angle measuring module; the power supply unit is positioned in the accommodating cavity and comprises a Hall switch; and the magnetic part is matched with the Hall switch, and the Hall switch is closed under the condition that the distance between the magnetic part and the Hall switch is smaller than or equal to the preset distance. When the measuring structure is in a non-working state, the magnetic part is controlled to be far away from the measuring device, the measuring device measures and obtains measurement data, the measurement data comprises coordinates of each measuring point on the surface of the femoral condyle in a preset space coordinate system, and the coordinate value of the measurable point is further used as an osteotomy quantity reference value, so that accurate osteotomy in a three-dimensional space can be realized.
Description
Technical Field
The application relates to the field of detection, in particular to a measuring device for bone cutting quantity.
Background
Total knee arthroplasty, one of the primary arthroplasty, is a well-established procedure, and the success or failure of total knee arthroplasty and the study of factors affecting its clinical efficacy have been a continuing concern. The method has the advantages that good clinical long-term curative effects are obtained, the selection of indications, the selection of prostheses, the accuracy of surgical skills and the management before perioperative operations are important, and particularly, the requirements on the surgical skills are high, so that the method is required to accurately cut bones and put prostheses in three-dimensional space, pay attention to balance and stability of soft tissues such as gaps and ligaments when knee joints are bent and stretched, and ensure that femoral, tibial and patella prosthesis components are positioned accurately.
The most important goal of total knee arthroplasty is to restore the lower limb force lines and balance the knee flexion-extension gap. The lower limb force line is an imaginary straight line from the rotation center of the femoral head to the midpoint of the inner ankle and the outer ankle, and represents the mechanical conduction line of the normal lower limb of the human body in the loading position. For normal people, the distal femur side of the lower limb has an eversion angle of 5-7 degrees with the force line, and the proximal tibia side has an eversion angle of 2-3 degrees with the line, so that the anatomical factors must be considered when knee joint osteotomies in TKA operations are performed, so that the lower limb force line is reconstructed to an ideal state that eversion tends to 0 degrees, and accurate osteotomies are key links for ensuring the accuracy of the lower limb force line.
With the popularization of intelligent devices, people use the intelligent devices more frequently, and the power consumption of the intelligent devices is also larger, so that the standby time of the intelligent devices is shorter.
All new-born intelligent devices, as well as the past intelligent mobile phones, computers and other devices, use batteries as energy sources. The lower the power consumption of these or devices, the longer their standby time. However, contrary to this, the higher the performance of the device, the higher the power consumption of the device, and the frequency of use of the device also increases the power consumption of the device. Therefore, in order to prolong the service life of the device, when the user does not use the intelligent device, related services in the device can be stopped/suspended, so that the electric quantity can be effectively saved.
However, when the service in the smart device is in a stop/disable/pause state, the smart device remains in standby mode and is not powered down, and still consumes power, which is obviously not managed by the stored power of the smart device. The power supply is completely cut off through the power switch, so that standby electric quantity consumption can be avoided to the greatest extent, and if the intelligent equipment in the shutdown mode is restored to the standby state again, the intelligent equipment needs to be awakened.
The prior wake-up technology generally wakes up the intelligent equipment in the shutdown mode through the physical press switch, and the problems that the sterilization requirement before the operation tool operation and the secondary pollution caused by the press switch after the sterilization are difficult to meet. If the software is used for waking up, the intelligent device must be kept in a standby mode, and is not powered off, and still consumes electric quantity, which obviously does not use the stored electric quantity management of the intelligent device.
Disclosure of Invention
The main aim of the application is to provide a measuring device for bone cutting quantity, which solves the problems that the awakening technology of the measuring device for bone cutting quantity in the prior art can produce secondary pollution and more power consumption.
In order to achieve the above object, according to one aspect of the present application, there is provided a measurement device for osteotomy amount, the device comprising: the measuring structure comprises a measuring body part, a ranging module, a sliding measuring module and an angle measuring module, wherein the measuring body part is provided with an accommodating cavity, the ranging module, the sliding measuring module and the angle measuring module are positioned in the accommodating cavity, the measuring structure can move along the length direction of the measuring structure, the ranging module is used for measuring the distance between each measuring point on the surface of a femoral condyle and a reference plane, the reference plane is a plane where a preset point of the ranging module is located, the reference plane is parallel to an XY plane in a preset space coordinate system, the sliding measuring module is used for measuring the distance between a projection point and an origin of coordinates, the origin of coordinates is the origin of the preset space coordinate system, the projection point is the projection of the measuring point on the XY plane in the preset space coordinate system, the angle measuring module is used for measuring the included angle between a preset connecting line and an X axis, and the preset connecting line is the connecting line of the projection point and the origin of coordinates; the power supply unit is positioned in the accommodating cavity and comprises a Hall switch, and the Hall switch is used for controlling whether the power supply unit supplies power to at least the measuring structure or not; and the magnetic part is matched with the Hall switch, and the Hall switch is closed under the condition that the distance between the magnetic part and the Hall switch is smaller than or equal to a preset distance.
Further, the measuring body part comprises a first end and a second end, the measuring body part further comprises an intermediate part positioned between the first end and the second end, and the ranging module is positioned in the accommodating cavity corresponding to the first end.
Further, the sliding measurement module and the angle measurement module are positioned in the accommodating cavity corresponding to the middle part at intervals.
Further, the ranging module includes: a laser emitting structure for emitting ranging laser light from the predetermined point to the measurement point; and the laser receiving structure is used for receiving the ranging laser reflected from the measuring point back to the preset point.
Further, the measuring device further includes: and the data processing unit is positioned in the accommodating cavity.
Further, the data processing unit includes: the data storage module is used for storing the measurement data of the measurement structure; the wireless data transmission module is used for transmitting the measurement data to a computer or mobile equipment; the micro control module is used for calculating the measurement data; and the power supply circuit is electrically connected with the data storage module, the wireless data transmission module and the micro control module respectively.
Further, the measuring device further includes: the positioning structure comprises a mounting groove; the support piece comprises a third end and a fourth end, the third end is positioned in the mounting groove, the fourth end protrudes out of the positioning structure, the measuring body part is connected with the third end, and the middle part is connected with the fourth end.
Further, the positioning structure includes: the mounting groove is positioned on the positioning body part, and the positioning body part is provided with a positioning hole; the locating piece is arranged in the locating hole in a penetrating way.
Further, the positioning piece is a Kirschner wire.
Further, the measuring structure can rotate with the supporting piece as an axis and can move along the length direction of the measuring structure.
By means of the technical scheme, the movable magnetic part approaches the measuring device, the Hall switch is closed under the condition that the distance between the magnetic part and the Hall switch is smaller than or equal to a preset distance, the power supply unit is controlled to supply power to the measuring structure, when the measuring structure is in a non-working state, the magnetic part is controlled to be far away from the measuring device, the measuring device measures and obtains measurement data, the measurement data comprise coordinates of each measuring point on the surface of the femoral condyle in a preset space coordinate system, the coordinates comprise an X-axis coordinate, a Y-axis coordinate and a Z-axis coordinate, the accurate position of each measuring point is obtained according to the measured coordinate values, the coordinate values of the measurable points are used as reference values of the bone cutting amount, accurate bone cutting on a three-dimensional space can be achieved, the control of the measurement data is not needed through a key, a knob or a touch screen, a control program is greatly simplified, and secondary pollution is not caused in the data measurement process.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 is a schematic view showing a part of a structure of a measuring device for osteotomy amount according to an embodiment of the present application in use;
FIG. 2 is a schematic view showing a part of the structure of a measuring device for osteotomy quantity according to an embodiment of the present application;
FIG. 3 shows a schematic view of a portion of a measurement device for osteotomy amount according to an embodiment of the present application; and
fig. 4 shows a schematic partial structure of a measuring device for osteotomy amount according to an embodiment of the present application.
Wherein the above figures include the following reference numerals:
1. femur to be measured; 10. a positioning structure; 11. a mounting groove; 12. positioning the body part; 13. a positioning piece; 20. a support; 21. a third end; 22. a fourth end; 30. a measurement structure; 31. a measuring body portion; 32. a ranging module; 320. a laser emitting structure; 321. a laser receiving structure; 33. a sliding measurement module; 34. an angle measurement module; 35. a receiving chamber; 36. a first end; 37. a second end; 40. a data processing unit; 41. a data storage module; 42. a wireless data transmission module; 43. a micro control module; 44. a power supply circuit; 45. a preprocessing circuit; 450. a filtering module; 451. an amplifying module; 452. an analog-to-digital conversion module; 50. and a power supply unit.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Furthermore, in the description and in the claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
As described in the background art, in the prior art, secondary pollution and more power consumption are generated in the wake-up technology of the osteotomy measurement device, so as to solve the problem that secondary pollution and more power consumption are generated in the wake-up technology of the osteotomy measurement device.
Fig. 1 and 2 are schematic views of a portion of a device for measuring osteotomy amount according to an embodiment of the present application. As shown in fig. 1 and 2, the measuring apparatus includes:
a measurement structure 30 including a measurement body 31, a ranging module 32, a sliding measurement module 33, and an angle measurement module 34, wherein the measurement body 31 has a housing cavity 35, the ranging module 32, the sliding measurement module 33, and the angle measurement module 34 are located in the housing cavity 35, the measurement structure 30 is movable along a longitudinal direction of the measurement structure 30, the reference plane is a plane on which a predetermined point of the ranging module 32 is located, and is parallel to an XY plane in a predetermined spatial coordinate system, the sliding measurement module 33 is configured to measure a distance between a projection point and an origin of coordinates, the origin of coordinates is an origin of the predetermined spatial coordinate system, the projection point is a projection of the measurement point on the XY plane in the predetermined spatial coordinate system, the angle measurement module 34 is configured to measure an included angle between a predetermined connection line and an X axis, and the predetermined connection line is a connection line between the projection point and the origin of coordinates;
a power supply unit 50 disposed in the accommodating chamber 35, wherein the power supply unit 50 includes a hall switch (not shown) for controlling whether the power supply unit 50 supplies power to at least the measuring structure 30;
a magnetic part (not shown) adapted to the hall switch, wherein the hall switch is closed when a distance between the magnetic part and the hall switch is less than or equal to a predetermined distance.
In the scheme, the movable magnetic part approaches to the measuring device, the Hall switch is closed under the condition that the distance between the magnetic part and the Hall switch is smaller than or equal to a preset distance, and then the power supply unit is controlled to supply power to the measuring structure.
The method comprises the steps of defining a preset space coordinate system in advance, setting a certain distance between an XY plane in the preset space coordinate system and the femoral condyle surface, projecting each measuring point on the femoral condyle surface to the XY plane in the preset space coordinate system, obtaining the distance between each projecting point and a coordinate origin, combining the measured angles, and obtaining the X-axis coordinate and the Y-axis coordinate of each measuring point on the femoral condyle surface according to a trigonometric function principle. For example, as shown in fig. 3, a projection point P' of a certain measurement point P on the femoral condyle surface on the XY plane in a predetermined space coordinate system is located at a distance L from the origin of coordinates, the measured included angle is set to be a positive included angle with the X axis, and the included angle is θ.
In one embodiment of the present application, as shown in fig. 2, the measuring body 31 further includes a first end 36 and a second end 37, the measuring body 31 further includes an intermediate portion between the first end 36 and the second end 37, the ranging module 32 is located in the accommodating cavity 35 corresponding to the first end 36, and the ranging module 32 is disposed in the accommodating cavity 35 corresponding to the first end 36 to facilitate increasing the measuring range.
In an embodiment of the present application, as shown in fig. 2, the sliding measurement module 33 and the angle measurement module 34 are located in the accommodating cavity 35 corresponding to the middle portion at intervals, so that the measurement data measured by the sliding measurement module 33 and the angle measurement module 34 are more accurate, and in addition, how the relative positional relationship between the sliding measurement module 33 and the angle measurement module 34 is set can be set by those skilled in the art according to practical situations.
In one embodiment of the present application, the ranging module is a laser ranging module, as shown in fig. 2, where the ranging module 32 includes a laser emitting structure 320 and a laser receiving structure 321, and the laser emitting structure 320 is configured to emit ranging laser from the predetermined point to the measuring point; the laser receiving structure 321 is configured to receive the ranging laser light reflected from the measurement point back to the predetermined point. As shown in fig. 3, the laser light emitting structure emits laser light from a predetermined point O (a point on a reference plane) which is a point on the reference plane, which is parallel to and has a predetermined distance from an XY plane in the predetermined space coordinate system, to a measurement point P; a laser receiving structure for receiving the laser reflected from the measurement point P at the predetermined point O; and determining a first distance according to a time difference between the emission of the laser light and the reception of the laser light and according to the time difference and the propagation speed of the laser light. The laser has the characteristics of high precision and high energy, the laser ranging can be used for measuring a more accurate distance, the reflection characteristic of the laser is used for further combining the time difference and the propagation speed of the laser to determine a first distance, the reference plane is parallel to an XY plane in the preset space coordinate system and has a preset distance, the second distance is the distance between the reference plane and the XY plane of the preset space coordinate system, and the difference between the first distance and the second distance is calculated to obtain the Z-axis coordinate of each measuring point. As shown in fig. 3, a reference plane is set, and the reference plane has a certain distance from the XY plane of the predetermined space coordinate system, and the reference plane is set in a direction away from the femoral condyle surface, so that the femoral condyle surface is located between the reference plane and the XY plane of the space coordinate system, and the Z-axis coordinate of the measurement point can be determined according to the difference between the first distance and the second distance, as shown in fig. 3, the first distance is set as H2, the second distance is set as H1, and the Z-axis coordinate of the measurement point is set as H1-H2.
In one embodiment of the present application, the process of obtaining the first distance includes: as shown in fig. 3, laser light is emitted from a predetermined point O, which is a point on the reference plane that is parallel to and has a predetermined distance from the XY plane in the predetermined spatial coordinate system, toward the measurement point P; receiving the laser light reflected from the measurement point P at the predetermined point O; the first distance is determined based on a time difference between the emission of the laser light and the reception of the laser light, and based on the time difference and a propagation speed of the laser light, for example, if the time difference is Δt, the propagation speed of the laser light is v. Then h2= Δt×v, in this embodiment, a plane where the predetermined point is located and parallel to the XY plane in the predetermined spatial coordinate system is the reference plane.
In an embodiment of the present application, as shown in fig. 2, the measuring device further includes a data processing unit 40, where the data processing unit 40 is located in the accommodating cavity 35, so that the space utilization of the device is high, and space is saved.
In one embodiment of the present application, as shown in fig. 2 and 4, the data processing unit 40 includes a data storage module 41, a wireless data transmission module 42, a micro control module 43, and a power supply circuit 44, where the data storage module 41 is configured to store measurement data of the measurement structure 30; the wireless data transmission module 42 is used for transmitting the measurement data to a computer or a mobile device; the micro control module 43 is used for calculating the measurement data; the power supply circuit 44 is electrically connected to the data storage module 41, the wireless data transmission module 42, and the micro control module 43, respectively.
In one embodiment of the present application, as shown in fig. 1 and 4, the data processing unit 40 further includes a preprocessing circuit 45, where the preprocessing circuit 45 includes a filtering module 450, an amplifying module 451, and an analog-to-digital conversion module 452. Generally, due to the influence of external noise, noise signals are often doped in the measurement data, so that the noise signals in the measurement data are filtered by filtering the measurement data, more accurate measurement data can be obtained, and more accurate bone setting amount can be obtained according to the measurement data. Specifically, the filtering process may be a low-pass filtering process, a high-pass filtering process, a band-pass filtering process, or the like, and which filtering process is specifically selected is determined by one skilled in the art according to the specific nature of the detected measurement data. In addition, the measured measurement data is often small, for example, the size is 0 to 30mV, so the filtered measurement data is amplified, specifically, the amplification can be realized by connecting a front-end amplifying circuit, and the selection of the front-end amplifying circuit is selected by a person skilled in the art according to the actual situation; to facilitate information processing, the analog signal is converted to a digital signal, which can then be processed by a microprocessor.
In one embodiment of the present application, as shown in fig. 1 and 2, the measuring device further includes a positioning structure 10 and a supporting member 20, where the positioning structure 10 includes a mounting groove 11; the support 20 includes a third end 21 and a fourth end 22, the third end 21 is positioned in the mounting groove 11, the fourth end 22 protrudes from the positioning structure 10, the measuring body 31 is connected to the fourth end 22, and the intermediate portion is connected to the fourth end 22.
In one embodiment of the present application, as shown in fig. 1, the positioning structure 10 includes a positioning body 12 and a positioning member 13, the mounting groove 11 is located on the positioning body 12, and the positioning body 12 has a positioning hole; the positioning piece 13 is arranged in the positioning hole in a penetrating way (not shown in the figure); the positioning piece 13 is penetrated in the positioning hole. The positioning element 13 further ensures that the measuring device can be stably fixed on the femur 1 to be measured during use.
In one embodiment of the present application, as shown in fig. 1, the positioning member 13 is a k-wire, which is thinner, so as to further ensure that the measuring device can be more reliably fixed on the femur 1 to be measured.
In one embodiment of the present application, the magnetic portion is a magnet, and the magnetic strength of the magnet may be selected according to practical situations.
In one embodiment of the present application, as shown in fig. 2, the measuring device further includes a power unit 50, and the power unit 50 is located in the accommodating cavity 35. The power supply unit 50 supplies power to the above-described ranging module 32, sliding measurement module 33, angle measurement module 34, and data processing unit 40.
As shown in fig. 2, since the ranging module 32, the laser emitting structure 320, the laser receiving structure 321, the sliding measurement module 33, the angle measurement module 34, the data processing unit 40, and the power supply unit 50 are all located in the accommodation chamber 35, they are not visible from the outside, and in order to show the positions of the above structures, they are indicated by dotted lines in fig. 2.
From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:
according to the osteotomy measurement device, the magnetic part is moved to approach the measurement device, the Hall switch is closed under the condition that the distance between the magnetic part and the Hall switch is smaller than or equal to the preset distance, the power supply unit is controlled to supply power to the measurement structure, when the measurement structure is in a non-working state, the magnetic part is controlled to be far away from the measurement device, measurement data are measured by the measurement device, the measurement data comprise coordinates of each measurement point on the surface of the femoral condyle in a preset space coordinate system, the coordinates comprise an X-axis coordinate, a Y-axis coordinate and a Z-axis coordinate, the accurate position of each measurement point is obtained according to the measured coordinate values, the coordinate values of the measurable points are further used as osteotomy reference values, accurate osteotomy on a three-dimensional space can be achieved, the control of the measurement data is not needed through modes such as keys, knobs or touch screens, a control program is greatly simplified, and secondary pollution is not caused in the data measurement process.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (5)
1. A device for measuring osteotomy, comprising:
the measuring structure comprises a measuring body part, a ranging module, a sliding measuring module and an angle measuring module, wherein the measuring body part is provided with a containing cavity, the ranging module, the sliding measuring module and the angle measuring module are positioned in the containing cavity, the measuring structure can move along the length direction of the measuring structure, the ranging module is used for measuring the distance between each measuring point on the surface of a femoral condyle and a reference plane, the reference plane is a plane where a preset point of the ranging module is positioned, the reference plane is parallel to an XY plane in a preset space coordinate system, the sliding measuring module is used for measuring the distance between a projection point and an origin of coordinates, the origin of coordinates is the origin of coordinates in the preset space coordinate system, the projection point is the projection of the measuring point on the XY plane in the preset space coordinate system, the angle measuring module is used for measuring an included angle between a preset connecting line and an X axis, the preset connecting line is the projection point and the origin of coordinates, the measuring body part comprises a first end and a second end, and the measuring body part further comprises an intermediate part positioned between the first end and the second end;
the power supply unit is positioned in the accommodating cavity and comprises a Hall switch, and the Hall switch is used for controlling whether the power supply unit supplies power to at least the measuring structure or not;
the magnetic part is matched with the Hall switch, and the Hall switch is closed under the condition that the distance between the magnetic part and the Hall switch is smaller than or equal to a preset distance;
the ranging module includes:
a laser emitting structure for emitting ranging laser light from the predetermined point to the measurement point;
a laser receiving structure for receiving the ranging laser reflected back from the measurement point to the predetermined point;
the measuring device further includes:
the data processing unit is positioned in the accommodating cavity;
the data processing unit includes:
the data storage module is used for storing the measurement data of the measurement structure;
the wireless data transmission module is used for transmitting the measurement data to a computer or mobile equipment;
the micro control module is used for calculating the measurement data;
the power supply circuit is electrically connected with the data storage module, the wireless data transmission module and the micro control module respectively;
the measuring device further includes:
the positioning structure comprises a mounting groove;
the support piece comprises a third end and a fourth end, the third end is positioned in the mounting groove, the fourth end protrudes out of the positioning structure, the measuring body part is connected with the third end, and the middle part is connected with the fourth end;
the measuring structure can rotate with the supporting piece as an axis and can move along the length direction of the measuring structure.
2. The measurement device of claim 1, wherein the ranging module is located within a receiving cavity corresponding to the first end.
3. The measurement device of claim 2, wherein the sliding measurement module and the angle measurement module are positioned in the corresponding receiving cavity of the intermediate portion at intervals.
4. The measurement device of claim 1, wherein the positioning structure comprises:
the mounting groove is positioned on the positioning body part, and the positioning body part is provided with a positioning hole;
the locating piece is arranged in the locating hole in a penetrating way.
5. The measurement device of claim 4, wherein the positioning member is a k-wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910979251.1A CN110623702B (en) | 2019-10-15 | 2019-10-15 | Osteotomy measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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