CN206507933U - A kind of outside fixed frame for external osteosynthesis device for measuring force - Google Patents
A kind of outside fixed frame for external osteosynthesis device for measuring force Download PDFInfo
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- CN206507933U CN206507933U CN201621226037.7U CN201621226037U CN206507933U CN 206507933 U CN206507933 U CN 206507933U CN 201621226037 U CN201621226037 U CN 201621226037U CN 206507933 U CN206507933 U CN 206507933U
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- foil gauge
- wire
- wire foil
- support bar
- display module
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Abstract
The utility model discloses a kind of outside fixed frame for external osteosynthesis device for measuring force, the device includes sensory package, amplifier module and display module；The sensory package includes the first wire foil gauge, the second wire foil gauge, the 3rd wire foil gauge and the 4th wire foil gauge being arranged on the support bar.The apparatus structure advantages of simple, circuit working stability, debugging are simple.By each foil gauge formation resistance strain type sensor in the sensory package, stress inside exterior fixing rack can be measured by the sensor, and shown by display module.Facilitate medical personnel that support bracket fastened tightness is adjusted in good time according to the stress measured, and determine to remove the support bracket fastened date.
Description
Technical field
The utility model is related to technical field of medical instruments, more particularly to a kind of outside fixed frame for external osteosynthesis device for measuring force.
Background technology
The method of traditional external fixation of fracture largely relies on the experience of doctor, it is impossible to conveniently, quantify, in time
Understand support bracket fastened tightness, thus have impact on the effect for the treatment of fracture, or even bring some adverse consequences.According to analysis
With experiment, in fracture healing process, bone is gradually reduced for support bracket fastened intensity requirement, fixed support support bar it is interior
Power and deformation are gradually decreased.Therefore, it is necessary to by measuring the internal force of support bracket fastened support bar come really during fractures
Determine fracture mechanical characteristic, so as to preferably monitor fracture healing process, growing state and limbs blood according to bone
The support bracket fastened tightness of liquid circulatory condition timely adjustment, and finally determine to remove the support bracket fastened date.
Utility model content
The utility model provides a kind of outside fixed frame for external osteosynthesis device for measuring force.
The utility model provides following scheme：
A kind of outside fixed frame for external osteosynthesis device for measuring force, the exterior fixing rack includes support bar, and described device includes sensing
Component, amplifier module and display module；
The sensory package includes the first wire foil gauge, the strain of the second wire being arranged on the support bar
Piece, the 3rd wire foil gauge and the 4th wire foil gauge；The first wire foil gauge and second wire
Foil gauge is connected by the first wire, and the second wire foil gauge passes through the second wire with the 3rd wire foil gauge
It is connected, the 3rd wire foil gauge is connected with the 4th wire foil gauge by privates, the 4th metal
Silk foil gauge is connected with the first wire foil gauge by privates；
Wherein, second wire is connected and the privates are connected and are connected respectively with the both positive and negative polarity of dc source,
First wire is connected and input respectively with the amplifier module of the privates is connected；The amplifier module
Output end is connected with the display module.
It is preferred that：The first wire foil gauge, the second wire foil gauge, the 3rd wire foil gauge
And the 4th wire foil gauge is the wire foil gauge that nominal value is 120 ohm.
It is preferred that：The length direction of the first wire foil gauge and the 3rd wire foil gauge prolongs the support
Bar it is axially arranged, the length direction of the second wire foil gauge and the 4th wire foil gauge is perpendicular to the branch
Strut it is axially arranged.
It is preferred that：The amplifier module is model 5G7650 integrated operational amplifier.
It is preferred that：The integrated operational amplifier of the model 5G7650 output end connection active low-pass filter after with
The display module is connected.
It is preferred that：The display module includes connected digital analog converter and LCD display, the digital analog converter with
The active low-pass filter is connected.
It is preferred that：The support bar is to be respectively arranged with the sensory package on three, three support bars.
The specific embodiment provided according to the utility model, the utility model discloses following technique effect：
Pass through the utility model, it is possible to achieve a kind of outside fixed frame for external osteosynthesis device for measuring force, should under a kind of implementation
Device can include sensory package, amplifier module and display module；The sensory package includes being arranged on the support bar
The first wire foil gauge, the second wire foil gauge, the 3rd wire foil gauge and the 4th wire foil gauge；It is described
First wire foil gauge is connected with the second wire foil gauge by the first wire, the second wire foil gauge with
The 3rd wire foil gauge is connected by the second wire, and the 3rd wire foil gauge is strained with the 4th wire
Piece is connected by privates, and the 4th wire foil gauge passes through privates phase with the first wire foil gauge
Even；Wherein, second wire is connected and the privates are connected and are connected respectively with the both positive and negative polarity of dc source, and described the
One wire is connected and input respectively with the amplifier module of the privates is connected；The output end of the amplifier module
It is connected with the display module.The apparatus structure advantages of simple, circuit working stability, debugging are simple.Pass through the sensory package
In each foil gauge formation resistance strain type sensor, stress shape inside exterior fixing rack can be measured by the sensor
State, and shown by display module.Facilitate medical personnel according to the stress measured to support bracket fastened elastic journey
Degree is adjusted in good time, and determines to remove the support bracket fastened date.
Certainly, implement any product of the present utility model to it is not absolutely required to while reaching all the above advantage.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
In required for the accompanying drawing that uses be briefly described, it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other accompanying drawings.
Fig. 1 is a kind of first structure signal for outside fixed frame for external osteosynthesis device for measuring force that the utility model embodiment is provided
Figure;
Fig. 2 is a kind of the second structural representation of outside fixed frame for external osteosynthesis device for measuring force that the utility model embodiment is provided
Figure；
Fig. 3 is a kind of the 3rd structural representation of outside fixed frame for external osteosynthesis device for measuring force that the utility model embodiment is provided
Figure.
In figure：Support bar 1, sensory package 2, the first wire foil gauge 201, the second wire foil gauge 202, the 3rd gold medal
Belong to silk foil gauge 203, the 4th wire foil gauge 204, amplifier module 3, display module 4, dc source 5.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art are obtained all belongs to
The scope protected in the utility model.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, a kind of outside fixed frame for external osteosynthesis device for measuring force provided for the utility model embodiment, such as
Shown in Fig. 1, Fig. 2, Fig. 3, the exterior fixing rack include support bar 1, described device include sensory package 2, amplifier module 3 and
Display module 4；
The first wire foil gauge 201, the second wire that the sensory package 2 includes being arranged on the support bar should
Become piece 202, the 3rd wire foil gauge 203 and the 4th wire foil gauge 204；The first wire foil gauge 201 with
The second wire foil gauge 202 is connected by the first wire, the second wire foil gauge 202 and the 3rd metal
Silk foil gauge 203 is connected by the second wire, the 3rd wire foil gauge 203 and the 4th wire foil gauge 204
It is connected by privates, the 4th wire foil gauge 204 passes through privates with the first wire foil gauge 201
It is connected；
Wherein, the both positive and negative polarity that second wire is connected and the privates are connected respectively with dc source 5 is connected,
First wire is connected and input respectively with the amplifier module 3 of the privates is connected；The amplifier module 3
Output end be connected with the display module 4.
The operation principle of device that the application is provided is, the first wire foil gauge 201, the second wire foil gauge 202,
After 3rd wire foil gauge 203 and the 4th wire foil gauge 204 are attached according to described connected mode, one right
Angle connects power supply, and another diagonal is used as exports, it is possible to form differential direct-current bridge, the electric bridge is exported by amplifier module
Signal be amplified and bridge-type change-over circuit conversion, may then pass through the display module and carry out the aobvious of pressure change
Show.The direct-current bridge can carry out the principle of weighing load measure using it, use the differential direct current of four foil gauge formation
Bridge can be to bone growth to the variable quantity of each strain sheet resistance values collection, and then pass through the change of each foil gauge resistance
The change to its pressure is calculated, so as to realize the monitoring of the internal force change to outside fixed frame for external osteosynthesis.
In actual applications, due to the active force suffered by support bar can not possibly just by support bar central axis, branch
Strut be stressed or pulling force outside, also endured cross force and Moment, it will bring error.In order to solve this problem,
The embodiment of the present application can be provided, the first wire foil gauge 201, the second wire foil gauge the 202, the described 3rd
Wire foil gauge 203 and the 4th wire foil gauge 204 are the wire foil gauge that nominal value is 120 ohm.
The differential direct-current bridge of equiarm can be formed using resistance same strain piece, the bridge measurement precision is higher also more to be stablized.Enter one
Step, the axial direction that the length direction of the first wire foil gauge and the 3rd wire foil gauge prolongs the support bar is set
Put, the length direction of the second wire foil gauge and the 4th wire foil gauge is perpendicular to the axial direction of the support bar
Set.By the connected mode of the electric bridge and the method to set up of each foil gauge, load over centre can be eliminated or side force is drawn
The error risen.The electric bridge uses direct current supply simultaneously, with certain temperature compensation function.
Because the signal that electric bridge is exported is weaker, it is therefore necessary to which computing can be carried out to a certain extent by being amplified, and be examined
It is static or quasistatic to consider support bracket fastened support bar stress, it is desirable to amp DC drift is fixed in amplifier module
It is small, it is the integrated operational amplifier that this embodiment of the present application can also provide that the amplifier module is model 5G7650.This is put
Big device is low drifting, high precision operating amplifier.Due to consideration that the work serious interference in hospital under 50 hertz frequencies, in order to
The reliability and stability of measurement are improved, the embodiment of the present application can also provide the integrated computation amplification of the model 5G7650
It is connected after the output end connection active low-pass filter of device with the display module.The active low-pass filter can be to 50 hertz
Interference is suppressed, can be to the Spline smoothing quick response of measured signal.Further, the display module includes what is be connected
Digital analog converter and LCD display, the digital analog converter are connected with the active low-pass filter.By amplification, filtering
Voltage signal afterwards is being sent to after digital analog converter carries out A/D conversions and can shown by the LCD display, for medical care people
Member and patient are checked.
In a word, the apparatus structure advantages of simple, circuit working stability, debugging are simple.By each in the sensory package
Individual foil gauge formation resistance strain type sensor, can measure stress inside exterior fixing rack, and lead to by the sensor
Display module is crossed to be shown.Medical personnel are facilitated to be entered in good time to support bracket fastened tightness according to the stress measured
Row regulation, and determine to remove the support bracket fastened date.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
Preferred embodiment of the present utility model is the foregoing is only, protection model of the present utility model is not intended to limit
Enclose.All any modification, equivalent substitution and improvements made within spirit of the present utility model and principle etc., are all contained in this reality
With in new protection domain.
Claims (7)
1. a kind of outside fixed frame for external osteosynthesis device for measuring force, the exterior fixing rack includes support bar, it is characterised in that described device
Including sensory package, amplifier module and display module；
The sensory package includes being arranged at the first wire foil gauge on the support bar, the second wire foil gauge, the
Three wire foil gauges and the 4th wire foil gauge；The first wire foil gauge and the second wire foil gauge
It is connected by the first wire, the second wire foil gauge is connected with the 3rd wire foil gauge by the second wire,
The 3rd wire foil gauge is connected with the 4th wire foil gauge by privates, the 4th wire strain
Piece is connected with the first wire foil gauge by privates；
Wherein, second wire is connected and the privates are connected and are connected respectively with the both positive and negative polarity of dc source, described
First wire is connected and input respectively with the amplifier module of the privates is connected；The output of the amplifier module
End is connected with the display module.
2. device according to claim 1, it is characterised in that the first wire foil gauge, second wire
Foil gauge, the 3rd wire foil gauge and the 4th wire foil gauge are the metal that nominal value is 120 ohm
Silk foil gauge.
3. device according to claim 2, it is characterised in that the first wire foil gauge and the 3rd metal
The length direction of silk foil gauge prolongs the axially arranged of the support bar, the second wire foil gauge and the 4th wire
The length direction of foil gauge is axially arranged perpendicular to the support bar.
4. device according to claim 1, it is characterised in that the amplifier module is model 5G7650 integrated computation
Amplifier.
5. device according to claim 4, it is characterised in that the integrated operational amplifier of the model 5G7650 it is defeated
It is connected after going out end connection active low-pass filter with the display module.
6. device according to claim 5, it is characterised in that the display module include connected digital analog converter and
LCD display, the digital analog converter is connected with the active low-pass filter.
7. the device according to any one of claim 1 to 6, it is characterised in that the support bar is three, three branch
The sensory package is respectively arranged with strut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621226037.7U CN206507933U (en) | 2016-11-15 | 2016-11-15 | A kind of outside fixed frame for external osteosynthesis device for measuring force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621226037.7U CN206507933U (en) | 2016-11-15 | 2016-11-15 | A kind of outside fixed frame for external osteosynthesis device for measuring force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206507933U true CN206507933U (en) | 2017-09-22 |
Family
ID=59861358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621226037.7U Active CN206507933U (en) | 2016-11-15 | 2016-11-15 | A kind of outside fixed frame for external osteosynthesis device for measuring force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206507933U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680073A (en) * | 2018-05-09 | 2018-10-19 | 广东工业大学 | A kind of disassembled vernier caliper and its installation method |
-
2016
- 2016-11-15 CN CN201621226037.7U patent/CN206507933U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680073A (en) * | 2018-05-09 | 2018-10-19 | 广东工业大学 | A kind of disassembled vernier caliper and its installation method |
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