WO1999056819A1 - Dispositif d'administration transdermique de medicament par ionophorese - Google Patents
Dispositif d'administration transdermique de medicament par ionophorese Download PDFInfo
- Publication number
- WO1999056819A1 WO1999056819A1 PCT/FR1999/001024 FR9901024W WO9956819A1 WO 1999056819 A1 WO1999056819 A1 WO 1999056819A1 FR 9901024 W FR9901024 W FR 9901024W WO 9956819 A1 WO9956819 A1 WO 9956819A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- strip
- electronic circuit
- slots
- battery
- face
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/04—Electrodes
- A61N1/0404—Electrodes for external use
- A61N1/0408—Use-related aspects
- A61N1/0428—Specially adapted for iontophoresis, e.g. AC, DC or including drug reservoirs
- A61N1/0432—Anode and cathode
- A61N1/044—Shape of the electrode
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/325—Applying electric currents by contact electrodes alternating or intermittent currents for iontophoresis, i.e. transfer of media in ionic state by an electromotoric force into the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/04—Electrodes
- A61N1/0404—Electrodes for external use
- A61N1/0408—Use-related aspects
- A61N1/0428—Specially adapted for iontophoresis, e.g. AC, DC or including drug reservoirs
- A61N1/0448—Drug reservoir
Definitions
- the present invention relates to a transdermal drug delivery device by iontophoresis.
- the device described in the aforementioned document comprises a programmable electronic module, capable of controlling, for a given medication, more or less long treatment times according to the needs of the patient.
- this module can be separated from the set of electrodes containing a medicament, and can be adapted to another set of electrodes containing another medicament.
- a single transdermal administration of a drug by iontophoresis is sufficient.
- the duration of treatment generally between 15 and 90 minutes, is fixed for a given drug. All the possibilities of variable programming or change of drugs mentioned above are then superfluous.
- the object of the present invention is to provide a device which integrates these constraints.
- a device for transdermal administration of drug by iontophoresis comprising an assembly including at least one electrode attached to a charged reservoir. of said drug and a counter electrode, an electronic circuit and an electric battery, said electronic circuit making it possible to produce a therapeutic electric current from the energy supplied by said battery, said current flowing between said two electrodes, said reservoir and the skin of a patient applied against it, said electronic circuit comprising means for conforming a time program for administration of the medicament to the discharge curve over time of said battery, from a fully charged state of said battery to to a state close to exhaustion.
- said means comprise a current generator supplied by a switching power supply and controlled by a voltage proportional to that measured at the terminals of said battery.
- - Figure 1 is a top view of the electrode assembly of the device according to the invention
- - Figure 2 is a bottom view of this set of electrodes
- - Figure 3 is a top view of an adhesive support for fixing the electrode assembly on the patient's skin
- - Figure 4 is a top view of the set of electrodes positioned in the adhesive support, in the unfolded situation and according to a first embodiment of the device for triggering the treatment;
- FIG. 5 is a side view of the device shown in Figure 4, positioned on the skin of a patient;
- FIG. 6 is a top view of the set of electrodes positioned in the adhesive support, in a folded situation and according to a second embodiment of the device for triggering the treatment;
- FIG. 7 is a side view of the device shown in Figure 6;
- FIG. 8 is a flowchart describing the operation of the electronic circuit of the device according to the invention.
- FIG. 9 shows a characteristic discharge curve of a battery that can power the electronic circuit of the device according to the invention.
- FIGS. 1 and 2 show a set of electrodes A intended to equip the device according to the invention.
- the body of this assembly consists of a sheet of flexible material, such as Bendflex or Kapton (registered trademarks), cut so as to substantially form a strip 1 comprising first 2 and second 3 rounded ends.
- This strip comprises a fold line 4 transverse to its length, located at the junction of the first rounded end 2 with the rest of the strip.
- the strip also comprises a slit 5 transverse to its length, located at the junction of the second end 3 with the rest of the strip and shown in broken lines in FIGS. 1 and 2. The usefulness of this slot 5 will appear in the remainder of this description.
- the strip 1 is provided with a double-sided printed circuit 6, produced for example by photoengraving.
- the circuit 6 comprises a plurality of contact pads 7 intended to receive electronic components, the printed circuit 6 and all of these components forming the electronic circuit of the device according to the invention.
- the pads 7 are interconnected by conductive tracks, some of which, 8, are located on the face A1 of the strip, and the others, 9, of which are located on the face A2 of the strip.
- Metallized holes 10 ensure electrical contact between the tracks located on the face Al and those located on the face A2. 5
- Two conductive tracks 11,12 located on the face Al of the strip 1 connect two of the contact pads 7 to two contact pads 13,14, themselves themselves connected respectively, via two metallized holes, to an electrode 15 and to a counter-electrode 16 situated on the face A2 of the strip (see FIG. 2).
- the electrode 15, for example of circular contour, is centered with respect to the first rounded end 2 of the strip.
- the counter electrode 16, for example of rectangular contour is located between the part of the face A2 where the conductive tracks 9 are located and the second rounded end 3 of the strip.
- a conductive track 20 connects the metallized hole 19 to a contact pad 25, itself connected via a metallized hole to a contact pad 26 located on the face Al of the strip and centered with respect to the second rounded end 3.
- the distance dl between the contact pads 14 and 26 is substantially equal to twice that of the pad 26 at the junction of the second rounded end 3 with the rest of the strip.
- FIG. 3 shows an adhesive support B intended to fix the set of electrodes A to the skin of the patient.
- This adhesive support is cut from a conventional single-sided adhesive medical material, so as to substantially form a strip 27 comprising first 28 and second 29 rounded ends.
- the width of the strip 27 is greater than that of the strip 1, and is for example twice the width 6 of the strip 1.
- the length of the strip 27 is substantially equal to that of the strip 1.
- the strip 27 is provided with first 30 and second 31 slots, transverse to its length, located substantially and respectively at the junction of the first rounded end 28 with the rest of the strip and at the junction of the second rounded end 29 with the rest Of the band.
- the width of these slots is substantially equal to that of the strip 1, and the distance d2 which separates them is slightly less than that, d3, which separates the fold line 4 from the counter-electrode 16.
- the first slot 30 is connected to the edges of the strip 27 by a fold line 32.
- the strip 27 also includes a third slot 33 transverse to its length, located on the second rounded end 29, of width close to that of the slot 5 formed in the strip 1.
- the distance d4 from the second slot 31 to the third slot 33 is substantially equal to half of dl.
- the slot 33 is shown in broken lines in FIG. 3. The usefulness of this slot 33 will appear in the remainder of this description.
- Figure 4, and in Figure 5 where there is shown the device according to the invention in place on the skin 41 of a patient, the manner in which the set of electrodes A and the adhesive support B cooperate.
- Figure 5 where there is shown the device according to the invention in place on the skin 41 of a patient, the manner in which the set of electrodes A and the adhesive support B cooperate.
- Electronic components 34 are installed on the face A1 of the electrode assembly, in the area where the contact pads 7 are located.
- the two poles of a battery 35 are in contact, respectively, with the pad 14 and with the pad 7
- a tongue made of insulating material 36 is inserted between the battery 35 and the contact pad 26. This tongue projects outwards through the slot 5 of the strip 1.
- first 37 and second 38 tanks attached respectively to the electrode 15 and the counter electrode 16.
- These tanks consist, for example, in a layer of a material loaded with a substance : solution containing the drug to be administered for the reservoir attached to the counter-electrode, and neutral ionic solution such as NaCl for the reservoir attached to the electrode.
- These reservoirs are separated from the patient's skin 41 by permeable membranes 39, 40, and protected by shells (not shown) during storage.
- the set of electrodes A thus equipped is slid into the slots 30 and 31 of the adhesive support B, so that only the electronic components 34 appear on the side of the support B which is not coated with adhesive.
- the fold lines 4 and 32 coincide, and, in the first embodiment of the treatment triggering means, the tongue 36 passes through the slot 33 of the adhesive support B.
- FIG. 5 highlights the fact that only the periphery of the adhesive support B is bonded to the surface of the patient's skin 41, and furthermore that this support is bonded to the face A1 of the first rounded end 2 and to the face A2 of the second rounded end 3. 8
- FIGS 6 and 7 show the device according to the invention in storage configuration.
- the first rounded ends 2 and 28, respectively, of the set of electrodes A and of the adhesive support B, secured by gluing, are folded around the respective fold lines 4 and 32 against the face Al of the set of electrodes A. In this way, the size of the device is reduced. Furthermore, the components 34 of the electronic circuit are thus protected during storage and transport.
- the tongue 36 points outwards, crossing the slots 5 and 33, as it appears in FIGS. 4 and 5.
- a tongue made of insulating material 45 interposed between the battery 35 and the contact pad 26, points in the direction of the electronic components 3.
- This tongue is fixed to the adhesive face of the first rounded end 28 of the adhesive support B, so that the unfolding of this rounded end necessarily has the effect of removing the tongue from its initial position, thus achieving the electrical contacting of stack 35 with tablet 26.
- FIG 8 is a flowchart for understanding the operating principle of the electronic circuit of the device according to the invention.
- the battery 35 supplies this circuit from the moment when the tongue 36 or 45 has been removed.
- the circuit essentially comprises a current generator 46 supplied by a switching power supply 47 and controlled by the midpoint 48 of a divider bridge 49, constituted by resistors 50 and 51.
- the supply to 9 cutting 47 and the bridge 49 are both supplied by the voltage V ba tt delivered by the battery 35.
- the current generator 46 produces a so-called “therapeutic” current I th , intended to pass through the patient's skin between the electrode 15 and the counter electrode 16.
- the control voltage V of the current generator 46 proportional to the voltage V ba tt across the battery, is compared to a reference voltage using a comparator 52.
- the comparator co-orders the stopping of the current generator: the processing is finished.
- the threshold comparator 52 can be connected to a signaling device comprising for example an electroluminescent diode, making it possible to know when the treatment is finished.
- the control over time of the electronic circuit is ensured by the discharge of the battery 35, from a state of full charge thereof to a state close to exhaustion.
- the voltage delivered by the battery 35 cannot conventionally exceed a few volts.
- the transdermal administration of a drug by iontophoresis requires a much higher voltage, commonly of the order of several tens of volts (typically of the order of 25 to 30 volts). This is the role of switching power
- this control voltage is provided by the midpoint
- the voltage V then changes over time according to a function V (t) whose graph is substantially parallel and conforms to that of the characteristic V batt (t) representing the change over time of the voltage delivered by the battery, during d 'continuous operation of this battery.
- FIG. 9 provides a good understanding of this operating principle.
- This figure represents the characteristic discharge curve of a GOULD 6C100 type battery, which is an example of a battery that can be used to power the electronic circuit of the device according to the invention.
- the horizontal axis gives the time in hours, and the vertical axis gives the voltage V att across the battery, so that Figure 9 shows the time taken by V bat t to reach a determined value.
- the first part 53 shows a drop in V batt of approximately 1 volt in 5 minutes: this is the passage of V at from the electromotive force when empty to the voltage under load.
- the second part 54 of the curve which spans about 3 hours, looks like a plateau located around 4.5 volts.
- the initial over-intensity highlighted by the 53 ′ portion of the curve makes it possible to rapidly decrease (in about 5 minutes) the resistance of the patient's skin, and thus to prepare a favorable terrain for application. iontophoretic treatment.
- the plate portion 54 corresponds to the application of the therapeutic current.
- the part 55 ′ of the curve corresponds to the end of the treatment: the concomitant fall in V batt commands, by a threshold device such as the comparator 52, the stopping of the operation of the current generator 46.
- the effective duration of application of the therapeutic current to the patient can be perfectly predetermined, by choosing a combination of drug / stack / threshold level adapted to each case.
- the user removes the shells that protect the first 37 and second 38 tanks; then it unfolds the first rounded end 28 of the rounded support 27; it then fixes the device according to the invention to the patient's skin using the adhesive strip 27; then, in the case of the first embodiment of the device according to the invention, it removes the tongue 36 (in the second embodiment of the device according to the invention, the tongue 45 has already been removed when the opening of the first rounded end 28); finally when the end signal of 12 treatment appears, the user peels off the entire device from the patient's skin, and discards it.
- this device is very simple, so that it is even possible to envisage that it is used by the patient himself.
- control over time of the stopping of the electronic circuit could be carried out by a timer.
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Electrotherapy Devices (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99916959A EP1075304A1 (fr) | 1998-04-30 | 1999-04-29 | Dispositif d'administration transdermique de medicament par ionophorese |
JP2000546839A JP2002513655A (ja) | 1998-04-30 | 1999-04-29 | イオン電気導入による経皮的投薬用装置 |
CA002330806A CA2330806A1 (fr) | 1998-04-30 | 1999-04-29 | Dispositif d'administration transdermique de medicament par ionophorese |
AU35261/99A AU740690B2 (en) | 1998-04-30 | 1999-04-29 | Device for transdermal administration of medicine by iontherapy |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR98/05473 | 1998-04-30 | ||
FR9805473A FR2778108B1 (fr) | 1998-04-30 | 1998-04-30 | Dispositif d'administration transdermique de medicament par ionophorese |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999056819A1 true WO1999056819A1 (fr) | 1999-11-11 |
Family
ID=9525894
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/001024 WO1999056819A1 (fr) | 1998-04-30 | 1999-04-29 | Dispositif d'administration transdermique de medicament par ionophorese |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1075304A1 (fr) |
JP (1) | JP2002513655A (fr) |
AU (1) | AU740690B2 (fr) |
CA (1) | CA2330806A1 (fr) |
FR (1) | FR2778108B1 (fr) |
WO (1) | WO1999056819A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010075710A (ja) * | 2001-10-24 | 2010-04-08 | Power Paper Ltd | 経皮パッチ |
US8239017B2 (en) | 2003-06-30 | 2012-08-07 | Johnson & Johnson Consumer Companies, Inc. | Device for treatment of barrier membranes |
US8734421B2 (en) | 2003-06-30 | 2014-05-27 | Johnson & Johnson Consumer Companies, Inc. | Methods of treating pores on the skin with electricity |
US9044397B2 (en) | 2009-03-27 | 2015-06-02 | Ethicon, Inc. | Medical devices with galvanic particulates |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3016296B1 (fr) * | 2014-01-14 | 2021-06-25 | Feeligreen | Dispositif pour l'electrostimulation et/ou l'iontophorese |
FR3020958B1 (fr) * | 2014-05-19 | 2016-06-24 | Commissariat Energie Atomique | Dispositif d'electrode cutanee et dispositif d'electrostimulation integrant ce dispositif d'electrode. |
FR3031315B1 (fr) * | 2015-01-07 | 2020-01-10 | Feeligreen | Dispositif pour l'electrostimulation et/ou l'iontophorese comprenant un support et un boitier |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4713050A (en) * | 1984-10-12 | 1987-12-15 | Drug Delivery Systems Inc. | Applicator for non-invasive transcutaneous delivery of medicament |
DE4028125A1 (de) * | 1990-01-17 | 1991-07-18 | Klimke Markus | Applikationsvorrichtung fuer die geregelte dosierung verschiedener pharmakons mittels elektrischem strom zum perkutanen transport zur lokalen und systemischen therapie |
EP0558409A1 (fr) * | 1992-02-27 | 1993-09-01 | LABORATOIRES D'HYGIENE ET DE DIETETIQUE L.H.D. Société Anonyme dite: | Dispositif de génération d'une tension électrique de forme d'onde prédéterminée et appareil ionophorétique d'administration transdermique de médicaments muni d'un tel dispositif |
WO1996017651A1 (fr) * | 1994-12-08 | 1996-06-13 | Alza Corporation | Appareil d'administration par electrotransport |
WO1997011742A1 (fr) * | 1995-09-28 | 1997-04-03 | Becton Dickinson And Company | Systeme d'apport d'un medicament iontophoretique comrenant un timbre adhesif jetable |
FR2747313A1 (fr) | 1996-04-16 | 1997-10-17 | Lhd Lab Hygiene Dietetique | Dispositif d'administration transdermique de medicaments par ionophorese |
-
1998
- 1998-04-30 FR FR9805473A patent/FR2778108B1/fr not_active Expired - Fee Related
-
1999
- 1999-04-29 WO PCT/FR1999/001024 patent/WO1999056819A1/fr not_active Application Discontinuation
- 1999-04-29 EP EP99916959A patent/EP1075304A1/fr not_active Withdrawn
- 1999-04-29 CA CA002330806A patent/CA2330806A1/fr not_active Abandoned
- 1999-04-29 AU AU35261/99A patent/AU740690B2/en not_active Ceased
- 1999-04-29 JP JP2000546839A patent/JP2002513655A/ja active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4713050A (en) * | 1984-10-12 | 1987-12-15 | Drug Delivery Systems Inc. | Applicator for non-invasive transcutaneous delivery of medicament |
DE4028125A1 (de) * | 1990-01-17 | 1991-07-18 | Klimke Markus | Applikationsvorrichtung fuer die geregelte dosierung verschiedener pharmakons mittels elektrischem strom zum perkutanen transport zur lokalen und systemischen therapie |
EP0558409A1 (fr) * | 1992-02-27 | 1993-09-01 | LABORATOIRES D'HYGIENE ET DE DIETETIQUE L.H.D. Société Anonyme dite: | Dispositif de génération d'une tension électrique de forme d'onde prédéterminée et appareil ionophorétique d'administration transdermique de médicaments muni d'un tel dispositif |
WO1996017651A1 (fr) * | 1994-12-08 | 1996-06-13 | Alza Corporation | Appareil d'administration par electrotransport |
WO1997011742A1 (fr) * | 1995-09-28 | 1997-04-03 | Becton Dickinson And Company | Systeme d'apport d'un medicament iontophoretique comrenant un timbre adhesif jetable |
FR2747313A1 (fr) | 1996-04-16 | 1997-10-17 | Lhd Lab Hygiene Dietetique | Dispositif d'administration transdermique de medicaments par ionophorese |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010075710A (ja) * | 2001-10-24 | 2010-04-08 | Power Paper Ltd | 経皮パッチ |
US8239017B2 (en) | 2003-06-30 | 2012-08-07 | Johnson & Johnson Consumer Companies, Inc. | Device for treatment of barrier membranes |
US8734421B2 (en) | 2003-06-30 | 2014-05-27 | Johnson & Johnson Consumer Companies, Inc. | Methods of treating pores on the skin with electricity |
US9044397B2 (en) | 2009-03-27 | 2015-06-02 | Ethicon, Inc. | Medical devices with galvanic particulates |
Also Published As
Publication number | Publication date |
---|---|
CA2330806A1 (fr) | 1999-11-11 |
AU3526199A (en) | 1999-11-23 |
AU740690B2 (en) | 2001-11-08 |
FR2778108B1 (fr) | 2000-07-21 |
JP2002513655A (ja) | 2002-05-14 |
FR2778108A1 (fr) | 1999-11-05 |
EP1075304A1 (fr) | 2001-02-14 |
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