CN103393431A - Lower limb stress recording device - Google Patents
Lower limb stress recording device Download PDFInfo
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- CN103393431A CN103393431A CN2013103270883A CN201310327088A CN103393431A CN 103393431 A CN103393431 A CN 103393431A CN 2013103270883 A CN2013103270883 A CN 2013103270883A CN 201310327088 A CN201310327088 A CN 201310327088A CN 103393431 A CN103393431 A CN 103393431A
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Abstract
A lower limb stress recording device comprises a lower limb brace unit, a lower limb stress sensing unit and a lower limb stress data recording and storing unit. The lower limb stress sensing unit comprises a machine body and a digital display assembly, wherein the machine body is provided with a stress sensor. The stress sensor senses an analog voltage signal and outputs the analog voltage signal to an analog-digital converter; the analog-digital converter converts the analog voltage signal into a digital signal after amplifying the analog voltage signal, and then outputs the digital signal to a central processing unit; the central processing unit converts the digital signal into stress value data and outputs the stress value data to a digital displayer for display. The stress value data obtained by the lower limb stress sensing unit are recorded and stored in the central processing unit; a curve chart of tested stress and a test process are displayed synchronously through connection between synchronous test and analysis software and a computer; test data can be imported in an EXCEL and other office software or the test curve chart can be saved in various formats for medical statistics and scientific research and analysis.
Description
Technical field
The present invention relates to a kind of Electronic medical device, especially be applied to the lower limb stress recording equipment of patient with bone fracture.
Background technology
In clinical medicine work, early stage application lower limb traction before patients with lower limbs fracture operation, can alleviating pain, alleviates tissue edema, effectively prevents lower limb muscles tissue, nervus vasculairs to be stabbed by fracture end.Yet the size of traction strength determines the effectiveness of lower limb traction, and traction strength is too small inoperative, and hyper-traction can cause the limbs infringement.When the clinician goes lower limb traction in the past, main self-dependent experience, trailing weight can not get accurate surveying record and control, is difficult to guarantee the traction therapeutic effect.
The scientific research discovery, at Patients with Fractures of Lower Limbs, early postoperative period gives the suitable fine motion of fracture end and stress stimulation can significantly promote the growth of callus, the healing of acceleration fracture.Fine motion makes fracture end have vertical compressive stress, increase the metabolic activity of osteocyte, osteoblast etc., impel the PGE2 burst size to increase, promote angiogenesis, fine motion stress can cause the damage repeatedly of callus, causes repeatability fracture early reaction, discharges many biochemical mediators, mitogen, the osteogenesis factor etc., thereby induce local mesenchymal cell propagation, be divided into osteoblast or chondroblast, promote union of fracture.Therefore, new fractures theory thinks, the postoperative early stage suitable limited heavy burden activity of leaving the bed of patients with lower limbs fracture is conducive to fractures.
Yet, different fine motion stress parameters have different impacts to union of fracture, stress is crossed conference and is caused even fragmentation of internal fixation objects of fracture delayed union, nonunion, and understressing is inoperative, thereby the treatment of fracture end fine motion stress stimulation needs accurately to control the stress that fracture end bears.Owing to not having at present corresponding armarium to be used for real-time sensing, the record of the treatment of fracture end fine motion stress stimulation, patient can't accurately control the negative G of hindering limb, cause the treatment of most fracture of the lower limb, still require patient in the therapeutic process of initial 2-3 month, strict bed rest, do not allow the heavy burden activity of leaving the bed.Long-term bed, be unfavorable for union of fracture, and patient not only health reaches endurable mentally, and easily causes the complication such as decubital ulcer, phlebothrombosis, amyotrophy, osteoporosis, nonunion, pulmonary infection.
Relevant references:
" pulsating stress promotes the biomechanics experiment of union of fracture ". " the Orthopedic Journal of China " 1999.6 (6): 442
" experimentation of influence of controlled low frequency micromovement on fracture healing ". " Chinese orthopaedic trauma magazine " 2005,7 (8): 744
" the controlled fine motion of fracture segment low frequency affects the experimentation of callus mineralising and mechanical characteristic " [J]. Shanghai Communications University's journal: medicine, 2008,28 (12): 1491-1495.
" impact and the mechanism of action of stress on union of fracture ". " Chinese biomedical engineering magazine " 2011,17 (1): 86
Summary of the invention
The object of the invention, the problem that while being to solve the treatment of the capable operation of present fracture limbs front haulage with postoperative loaded exercise, the stress application amount can't the Real-Time Monitoring record, provide a kind of sensing in real time, the suffered stress of record storage fracture limbs, the auxiliary lower limb stress recording equipment that carries out fracture traction and the treatment of fine motion stress stimulation.
For achieving the above object, lower limb stress recording equipment of the present invention comprises: a leg-holder unit; A lower limb stress sensing cell, be installed on leg-holder; A lower limb stress data record storage unit;
This leg-holder unit be a kind of stomach in the external fixer of hindering the limbs outside, can select respectively ankle brace, ankle shin calf brace, shin calf brace according to the fracture site difference, ankle shin calf femur brace.
This lower limb stress sensing cell comprises: mechanical body has push-pull bar, strain gauge; The numeral display module, comprise the analog-digital converter that is connected with described strain gauge, the central processing unit that is connected with described analog-digital converter and the character display that is connected with described central processing unit; Described strain gauge is pulled by the lower limb traction weight or by foot, is trampled and deform while promoting and to described analog-digital converter, export an analog voltage signal, described analog-digital converter changes into digital signal and described digital signal is exported to described central processing unit after described analog voltage signal is amplified, and described central processing unit is converted into the power Value Data with described digital signal and exports to described character display demonstration.
This lower limb stress data record storage unit: the power Value Data that is obtained by described lower limb stress sensing cell is recorded and is stored in described central processing unit, and can connect computer by a cover synchronism detection analysis software, simultaneous display test force curve chart and test process, this software has powerful memory storage function, test data can be imported WORD, various office softwares such as EXCEL or test curve figure is saved as various forms add up and the scientific research analysis.
Described character display is liquid crystal display.
Described strain gauge can be interior stomach formula or external; Described built-in strain gauge comprises standing part and crushed element, and by described standing part, is fixed on mechanical body, with described push-pull bar, is connected, and described push-pull bar is pulled by described lower limb traction weight or promotes while by foot, being trampled; Described external strain gauge is installed on the vola section of described leg-holder unit.
Described central processing unit is connected with computer.
Described central processing unit is connected with indicating device, and described indicating device is used to indicate the duty of described lower limb stress sensing record cell.
Described central processing unit is connected with the control signal outfan, and described control signal outfan is used for exporting control signal to control circuit when the power value of surveying arrives doctor's pre set force value, sends prompt tone, and prompting reaches correct power value.
beneficial effect of the present invention is: during for the treatment of the capable operation of present fracture limbs front haulage and postoperative heavy burden functional exercise, the stress application value can't Real-Time Monitoring, the problem of record storage, lower limb stress recording equipment of the present invention precise number control in real time, show and record the fracture limbs and draw or heavy burden stress, traction stresses or the heavy burden stress intensity that patient can accurately be controlled hinder limb, be conducive to the treatment of fracture end fine motion stress stimulation, accelerate growth of spur, promote union of fracture, the phlebothrombosis of effectively avoiding patient's long-term bed to cause, amyotrophy, osteoporosis, the generation of the complication such as nonunion.The power Value Data of storing in therapeutic process can connect computer by a cover synchronism detection analysis software, simultaneous display test force curve chart and test process, the capable powerful memory storage function of this software tool, test data can be imported WORD, various office softwares such as EXCEL or test curve figure is saved as various forms carry out medical statistics and medical scientific analysis.
Description of drawings
Fig. 1 is the schematic perspective view of the lower limb stress recording equipment of the embodiment of the present invention.
Fig. 2 is the lower limb stress sensing cell mechanical body structural representation of lower limb stress record dress stomach of the present invention.
Fig. 3 is the circuit block diagram of the lower limb stress data record storage unit of lower limb stress recording equipment of the present invention.
In figure, Reference numeral is expressed as:
1-leg-holder unit; 2-lower limb stress sensing cell; 3-lower limb stress sensing cell mechanical body; The 4-push-pull bar; The 5-strain gauge; The 6-fixing hole.
The specific embodiment
For fully understanding purpose of the present invention, feature and effect, hereby by following specific embodiment, and coordinate appended diagram, the present invention is done a detailed description.
As shown in Figure 1, the present embodiment provides a kind of lower limb stress recording equipment, comprise leg-holder unit 1, be fixed in the lower limb stress sensing cell 2 on leg-holder unit 1, described lower limb stress sensing cell 2 contains mechanical body 3, and described mechanical body 3 has push-pull bar 4, the strain gauge 5 that is connected with described push-pull bar 4, described strain gauge 5 comprises standing part and crushed element, and by described standing part, is fixed on described mechanical body 3; The numeral display module, be used for being pulled by described lower limb traction weight at described push-pull bar 4 or by foot, trampled while promoting and show the power value; Described digital display module (its circuit block diagram is seen Fig. 3) comprises the analog-digital converter that is connected with described strain gauge 5, the central processing unit that is connected with described analog-digital converter and the character display that is connected with described central processing unit; Described strain gauge crushed element deforms and to described analog-digital converter, exports an analog voltage signal when described push-pull bar 4 is pushed or pulls, described analog-digital converter changes into digital signal and described digital signal is exported to described central processing unit after described analog voltage signal is amplified, and described central processing unit is converted into the power Value Data with described digital signal and exports to described character display demonstration.By this lower limb stress data record storage unit, the power Value Data that is obtained by described lower limb stress sensing cell is recorded and is stored in described central processing unit, and can connect computer by a cover synchronism detection analysis software, simultaneous display test force curve chart and test process, this software has powerful memory storage function, test data can be imported WORD, various office softwares such as EXCEL or test curve figure is saved as various forms add up and the scientific research analysis.
In the present embodiment, described character display is liquid crystal display.
In the present embodiment, the described standing part of described strain gauge 5 has two fixing holes 6, inserting bolt in described fixing hole, and described strain gauge 5 is fixed on described mechanical body 3 by being threaded between described fixing hole 6 and described bolt.
In the present embodiment, described central processing unit is connected with computer.
In the present embodiment, described central processing unit is connected with indicating device, and described indicating device is used to indicate the duty of described lower limb stress recording equipment.
In the present embodiment, described central processing unit is connected with the control signal outfan, and described control signal outfan is used for exporting control signal to control circuit when the power value of surveying arrives doctor's pre set force value, sends prompt tone, and prompting reaches correct power value.
In the present embodiment, for the switch to described central processing unit, control, described central processing unit is connected with switching device, and at this, described switching device is keyboard.
In the present embodiment, in order to guarantee that described central processing unit has sufficient delivery, described central processing unit connects power supply circuits, when described central processing unit electric weight is not enough, charging signals of the described power supply circuits of meeting, described power supply circuits are received the backward described central processing unit charging of described charging signals.
The process of utilizing lower limb stress recording equipment that the present embodiment provides to carry out force measurement, record storage is:
when the early stage row of Patients with Fractures of Lower Limbs continues lower limb traction, wear the described lower limb stress of the present embodiment recording equipment, the doctor in charge can be according to the particular type of fracture, set the safe value of thrust of described lower limb stress sensing cell personalizedly, in hindering the limb traction process, described push-pull bar 3 is pulled by the lower limb traction weight, described push-pull bar 4 acts on described strain gauge 5 with described active force, the crushed element of described strain gauge 5 deforms, and to analog voltage signal of described analog-digital converter output, described analog-digital converter changes into digital signal and described digital signal is exported to described central processing unit after described analog voltage signal is amplified, described central processing unit is converted into the power Value Data with described digital signal and exports to described character display and show this power value.When actual value of thrust reached the safe value of thrust that the doctor presets, described central processing unit, to control signal outfan output control signal, sent prompt tone, and prompting reaches correct value of thrust, keeps this power value to carry out lower limb traction.
after the Patients with Fractures of Lower Limbs operation, leave the bed in early days the row limited heavy burden, during the treatment of fracture end fine motion stress stimulation, wear the described lower limb stress record of the present embodiment dress stomach, the doctor can be according to the particular type of fracture and the concrete methods of internal fixation of operation, this patient's safe negative G value is set on personalized ground on described lower limb stress recording equipment, leave the bed to hold up the wounded and turn into row and hinder the limited heavy burden therapeutic process of limb, described push-pull bar 4 contacts with ground, trampled promotion, described push-pull bar 4 acts on described strain gauge 5 with described active force, the crushed element of described strain gauge 5 deforms, and to analog voltage signal of described analog-digital converter output, described analog-digital converter changes into digital signal and described digital signal is exported to described central processing unit after described analog voltage signal is amplified, described central processing unit is converted into the power Value Data with described digital signal and exports to described character display and show this power value.When hindering limb actual negative gravity value while reaching the safe negative G value that the doctor presets, described central processing unit, to control signal outfan output control signal, sends prompt tone, and prompting reaches correct negative G value, the prompting patient proceeds weight training exercise, tramples till heavy burden all will hear prompt tone at every turn.
In above therapeutic process, the power Value Data that is obtained by described lower limb stress sensing cell is recorded and is stored in described central processing unit, described storage data can connect computer by a cover synchronism detection analysis software, simultaneous display test force curve chart and test process, this software has powerful memory storage function, test data can be imported WORD, various office softwares such as EXCEL or test curve figure is saved as various forms carry out medical statistics and medical scientific analysis.
Obviously, above-described embodiment is only for example clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make on the basis of the above description other multi-form variation or changes.Here need not also can't give all embodiments exhaustive.And the apparent variation of extending thus or the change still be in protection scope of the present invention within.
Claims (4)
1. lower limb stress recording equipment, be used for sensing, record traction and the heavy burden stress of the carrying of storage fracture limbs.This lower limb stress recording equipment comprises:
The leg-holder unit is to be placed in the external fixer of hindering the limbs outside;
Lower limb stress sensing cell, be arranged on the leg-holder unit, is used for sensing, shows the lower limb stress data;
Lower limb stress data record storage unit;
It is characterized in that:
Described lower limb stress sensing cell contains mechanical body, digital display module;
Described mechanical body has push-pull bar, strain gauge;
Described digital display module, comprise the analog-digital converter that is connected with described strain gauge, the central processing unit that is connected with described analog-digital converter and the character display that is connected with described central processing unit;
Described strain gauge is pulled by the lower limb traction weight or by foot, is trampled and deform while promoting and to described analog-digital converter, export an analog voltage signal, described analog-digital converter changes into digital signal and described digital signal is exported to described central processing unit after described analog voltage signal is amplified, and described central processing unit is converted into the power Value Data with described digital signal and exports to described character display demonstration.
Described lower limb stress data record storage unit, the power Value Data that is obtained by described lower limb stress sensing cell is recorded and is stored in described central processing unit, and can connect computer by a cover synchronism detection analysis software, simultaneous display test force curve chart and test process, this software has powerful memory storage function, test data can be imported WORD, various office softwares such as EXCEL or test curve figure is saved as various forms carry out medical statistics and scientific research analysis.
2. lower limb stress recording equipment according to claim 1 is characterized in that:
Described central processing unit is connected with indicating device, and described indicating device is used to indicate the duty of described lower limb stress recording equipment.
3. lower limb stress recording equipment according to claim 2 is characterized in that:
Described central processing unit is connected with the control signal outfan, and described control signal outfan is used for exporting control signal to control circuit when the power value of surveying arrives doctor's pre set force value, sends prompt tone, and prompting reaches correct power value.
4. lower limb stress recording equipment according to claim 3 is characterized in that:
Described central processing unit is connected with computer.
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| CN2013103270883A CN103393431A (en) | 2013-07-24 | 2013-07-24 | Lower limb stress recording device |
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| CN2013103270883A CN103393431A (en) | 2013-07-24 | 2013-07-24 | Lower limb stress recording device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108523908A (en) * | 2018-04-03 | 2018-09-14 | 丽水学院 | A kind of measuring device of batrachia four limbs pulling force |
| CN111449825A (en) * | 2020-03-16 | 2020-07-28 | 张立岩 | Adjustable fixed point temperature control lower limb external fixing device |
-
2013
- 2013-07-24 CN CN2013103270883A patent/CN103393431A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108523908A (en) * | 2018-04-03 | 2018-09-14 | 丽水学院 | A kind of measuring device of batrachia four limbs pulling force |
| CN108523908B (en) * | 2018-04-03 | 2020-12-11 | 丽水学院 | Measurement device for frog class four limbs pulling force |
| CN111449825A (en) * | 2020-03-16 | 2020-07-28 | 张立岩 | Adjustable fixed point temperature control lower limb external fixing device |
| CN111449825B (en) * | 2020-03-16 | 2022-05-10 | 北华大学 | Adjustable fixed-point temperature control lower limb external fixing device |
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Application publication date: 20131120 |