CN2449750Y - Improved circuit of small intermittent current medicine ion introducing-into apparatus - Google Patents
Improved circuit of small intermittent current medicine ion introducing-into apparatus Download PDFInfo
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- CN2449750Y CN2449750Y CN 00218007 CN00218007U CN2449750Y CN 2449750 Y CN2449750 Y CN 2449750Y CN 00218007 CN00218007 CN 00218007 CN 00218007 U CN00218007 U CN 00218007U CN 2449750 Y CN2449750 Y CN 2449750Y
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- current
- circuit
- small
- medicine ion
- ion introducing
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Abstract
The utility model belongs to the technical field of the medical therapeutic apparatus, which particularly relates to a circuit part of a small intermittent current medicine ion introducing-into apparatus. The existing medicine ion introducing-into apparatus has a small output power, and the output current is easy to affect by the contact resistance variation of the electrode plate and the human body. Thus, the introducing efficiency of the medicine is reduced. The utility model makes the output resistance small and the output current large to enhance the introducing efficiency of the medicine ion by the improvement of the oscillating circuit, the utility model can also monitor the variance of the current intensity, and the application of the utility model is safe.
Description
This utility model belongs to the medical therapeutic Instrument field, is specifically related to a kind of improvement circuit of small-sized interrupted current medicine ion introducing apparatus.
Past, use wider ion introducing apparatus in hospital, the family and be essentially the unidirectional current ion introducing apparatus, it reduces line voltage by transformator, becomes electric current output stably through over commutation, Filtering Processing, output voltage is generally below 100 volts, and output current is the 0-50 milliampere.But a large amount of clinical practices confirm that it is long to power up treatment time when using unidirectional current iontophoresis mode, produce the polarization electromotive force opposite in the tissue in vivo easily with applied voltage, it can offset applied voltage, hinders medicine ion and imports deep tissues, thereby reduced curative effect.Use the more pulsating (low frequency that is in recent years clinically, intermediate frequency) ion introducing apparatus, it has overcome the shortcoming of above-mentioned unidirectional current ion introducing apparatus to a certain extent, present design to the pulsating ion introducing apparatus, adopt electronic formula circuit form mostly, for example Chinese patent 97106277.3 discloses a kind of electronic formula ion introducing apparatus, it adopts the method for unidirectional square-wave frequency modulation intermediate frequency, produce unidirectional medium-frequency pulse voltage, electric current, its medicine ion imports efficient and improves, but its output is little, it is narrow mainly to show as output pulse width, the output impedance height, output current is subject to get an electric shock the indirectly influence of resistiveization of battery lead plate and human body, thereby reduced the efficient that medicine imports, the failure that will cause medicine ion to import when serious.In addition, for present commercially available small portable ion introducing apparatus, be the purpose of pursuing simplified design, reducing cost, usually the supervision of output current value there is not quantitative indicating device, and all decide by means of the sensation of human body self, the adjusting randomness of output current size is bigger, when regulating not at that time, also may cause the phenomenon because of the excessive patient of electric shock of electric current.
The purpose of this utility model is exactly by the improvement to existing medicine ion introducing apparatus circuit, and a kind of features simple structure is provided, and medicine imports the efficient height, and can monitor the newtype drug ion introducing apparatus of output current size.
To achieve these goals, this utility model provides a kind of small-sized interrupted current medicine ion introducing apparatus, and it mainly is made up of current rectifying and wave filtering circuit, constant-current circuit, pause switch circuit, level indicating circuit, output electrode.Wherein, the pause switch circuit adopts time-base integrated circuit to constitute agitator and drives miniature electro-magnetic relay, and the break-make by the control contact is to realize the conversion of unidirectional current-interrupted current (being commonly referred to alternating current); Also have, this utility model is used three light emitting diodes and is constituted three grades of level indicators, monitor weak, in, the variation of strong three kinds of current intensity.
The small-sized interrupted current medicine ion introducing apparatus that this utility model provides is by the improvement to oscillating circuit, make that output impedance reduces, output current increases, improved the importing efficient of medicine ion greatly, and the variation that it can also standby current intensity, use safer.
Below in conjunction with accompanying drawing and embodiment this utility model is further described.
The circuit structure diagram of the medicine ion introducing apparatus that Fig. 1 provides for this utility model
Fig. 2 is the layout of Fig. 1 discontinuous on-off circuit
Fig. 3 is the layout of level indicating circuit among Fig. 1
The structure of the small-sized interrupted current medicine ion introducing apparatus that this utility model provides is made up of current rectifying and wave filtering circuit 1, constant-current circuit 2, pause switch circuit 3, level indicating circuit 4, output electrode 5 as shown in Figure 1.
Wherein, current rectifying and wave filtering circuit 1 is by mains transformer B, bridge-type ballast D
0, dropping resistor R
0, filter capacitor C
0Form, after over commutation, Filtering Processing, be transformed into DC voltage stably through the alternating current after the transformator blood pressure lowering; Constant-current circuit 2 is according to audion T
1The I of (model TIP-50)
c-V
VcOutput characteristics designs, by regulator potentiometer W
1Size, can change the size of base current, thereby export required output current I
c
Pause switch circuit 3 is by time-base integrated circuit T
2, miniature electro-magnetic relay J and Resistor-Capacitor Unit form, the multivibrator by time-base integrated circuit and Resistor-Capacitor Unit formation is open close with control relay J contact K's, and DC current is become the intermittence electric current.
The layout of the small-sized interrupted current medicine ion introducing apparatus discontinuous on-off circuit 3 that this utility model provides as shown in Figure 2, it is with time-base integrated circuit T
2(model 555), miniature electro-magnetic relay J, Resistor-Capacitor Unit R
1, R
2, C
1Deng composition multivibrator, time-base integrated circuit T
2A docking point K adhesive and the disconnection of voltage pulse output control relay J of outfan (3) foot, thereby the control electric current is open close, realizes that DC current is transformed to exchange the intermittence electric current.
The relevant calculation formula of multivibrator is as follows:
Frequency of oscillation f=1.44/ (R
1+ 2R
2)
*1/C
1
Occupation efficiency D=R
2/ (R
1+ 2R
2)
By above formula as can be known, the frequency of oscillation of this multivibrator, output pulse width, intermittent time are by R
1, R
2, C
1Value decision.
In an exemplary embodiments of this circuit, R
1=4.7K Ω, R
2=100K Ω, C
1During=10 μ F, can draw the square wave that this multivibrator is exported frequency of oscillation f=0.7Hz, occupation efficiency D=0.49 according to computing formula.
The layout of the level indicating circuit 4 of the small-sized interrupted current medicine ion introducing apparatus that this utility model provides as shown in Figure 3, it is made up of three electrical chains, respectively indication weak, in, strong third gear intensity, by adjusting R
3, R
4, R
5Numerical value is demarcated three kinds of current intensity.When less electric current is exported, D
1The luminous tube conducting is luminous; When intermediate electric current is exported, D
1, D
2Conducting simultaneously is luminous; When big electric current is exported, D
1, D
2, D
3Conducting simultaneously is luminous.
The small-sized interrupted current medicine ion introducing apparatus that this utility model provides is owing to realize the generation of intermittence electric current by the break-make of control relay pair of contact, therefore have that output impedance is little, output current is big, output current is subjected to the little characteristics of " electrode-human body " contact resistance variable effect.In addition, this utility model adopts simple method, realized the objective indication to the current output value vision, thereby has only avoided subjective sensation artificially to set the shortcoming of electric current.
Claims (3)
1, a kind of improvement circuit of small-sized interrupted current medicine ion introducing apparatus is characterized in that the improvement circuit of this small-sized interrupted current medicine ion introducing apparatus is made up of current rectifying and wave filtering circuit (1), constant-current circuit (2), pause switch circuit (3), level indicating circuit (4), output electrode (5).
2, a kind of improvement circuit of small-sized interrupted current medicine ion introducing apparatus as claimed in claim 1, it is characterized in that wherein said pause switch circuit (3) adopts time-base integrated circuit to constitute multivibrator and drives miniature electro-magnetic relay, the break-make by the control contact is to realize the conversion of unidirectional current one interrupted current.
3, a kind of improvement circuit of small-sized interrupted current medicine ion introducing apparatus as claimed in claim 1, it is characterized in that wherein said level indicating circuit (4) uses three light emitting diodes and constitute three grades of flat indicators in Shen, monitor weak, in, the variation of strong three kinds of current intensity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00218007 CN2449750Y (en) | 2000-06-13 | 2000-06-13 | Improved circuit of small intermittent current medicine ion introducing-into apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00218007 CN2449750Y (en) | 2000-06-13 | 2000-06-13 | Improved circuit of small intermittent current medicine ion introducing-into apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2449750Y true CN2449750Y (en) | 2001-09-26 |
Family
ID=33583470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00218007 Expired - Fee Related CN2449750Y (en) | 2000-06-13 | 2000-06-13 | Improved circuit of small intermittent current medicine ion introducing-into apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2449750Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453132C (en) * | 2005-03-30 | 2009-01-21 | 上海塔瑞莎健康科技有限公司 | Trauma ulcer therapeutic equipment capable of promoting hyaluronic acid transdermal absorption |
-
2000
- 2000-06-13 CN CN 00218007 patent/CN2449750Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453132C (en) * | 2005-03-30 | 2009-01-21 | 上海塔瑞莎健康科技有限公司 | Trauma ulcer therapeutic equipment capable of promoting hyaluronic acid transdermal absorption |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |