CN112930028A - Flexible electrode with ductility and preparation method - Google Patents

Flexible electrode with ductility and preparation method Download PDF

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Publication number
CN112930028A
CN112930028A CN202110118928.XA CN202110118928A CN112930028A CN 112930028 A CN112930028 A CN 112930028A CN 202110118928 A CN202110118928 A CN 202110118928A CN 112930028 A CN112930028 A CN 112930028A
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China
Prior art keywords
electrode
flexible
silver
flexible film
branch
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Granted
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CN202110118928.XA
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Chinese (zh)
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CN112930028B (en
Inventor
熊墨勇
袁剑雄
李丙军
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Youerlai Changzhou Medical Technology Co ltd
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Youerlai Changzhou Medical Technology Co ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/11—Printed elements for providing electric connections to or between printed circuits
    • H05K1/118—Printed elements for providing electric connections to or between printed circuits specially for flexible printed circuits, e.g. using folded portions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/40—Detecting, measuring or recording for evaluating the nervous system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04—Tracheal tubes
    • A61M16/0402—Special features for tracheal tubes not otherwise provided for
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0277—Bendability or stretchability details
    • H05K1/0283—Stretchable printed circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/03—Use of materials for the substrate
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
    • H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/22—Secondary treatment of printed circuits
    • H05K3/28—Applying non-metallic protective coatings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
    • H05K3/4007—Surface contacts, e.g. bumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/12—Manufacturing methods specially adapted for producing sensors for in-vivo measurements
    • A61B2562/125—Manufacturing methods specially adapted for producing sensors for in-vivo measurements characterised by the manufacture of electrodes

Abstract

The invention discloses a flexible electrode with ductility and a preparation method thereof, which are mainly applied to the field of medical instruments; a flexible electrode, comprising: a flexible film; one side of the flexible film is provided with a flexible conductive circuit, and the whole or part of the other side of the flexible film is provided with an elastic gum layer; the position of the back side of the flexible film, which is not adhered with the elastic back glue layer, is provided with a PET film, or the positive electrode and the negative electrode consist of a silver electrode and a copper electrode, and the silver electrode and the copper electrode are connected in a pressing way or are connected through rivets. The conductive circuit is arranged on the flexible film, and the flexible film is further adhered to the outer wall of a carrier such as a tracheal cannula and the like through a back adhesive layer; the flexible electrode has very good flexibility, and it can be along with the bending deformation of carriers such as trachea cannula and deform, but flexible electrode can not influence its function of conduction signal because of the deformation of carriers such as trachea cannula, and then influence the monitoring result, simultaneously need bear tensile strength's position, through being equipped with the PET membrane in the dorsal corresponding position of flexible membrane to improve its tensile strength.

Description

Flexible electrode with ductility and preparation method
Technical Field
The invention relates to the technical field of flexible electrodes and application, in particular to a flexible electrode with ductility and a preparation method thereof.
Background
In the medical field, the function and the state of corresponding tissues of a human body are monitored by monitoring or collecting various electric signals of the human body, the flexible electrode has a conductive function, can realize the collection and the conduction of various electric signals corresponding to the human body, and can be well applied to the field. Meanwhile, in intubation components such as an endotracheal intubation used for surgical operations, continuous detection of nerves is realized by arranging electrodes on the outer wall of the intubation. However, since most of the endotracheal intubation and other intubation tubes are flexible tubes, the conventional method for disposing electrodes on the intubation tubes is as follows:
1. various signals of a human body are collected or transmitted through the metal conducting wire, the metal conducting wire is hard and easily scratches the human body tissue, the contact area with the human body tissue is small, the collected or transmitted signals are insufficient, and the result error of monitoring the human body tissue is high.
2. Various signals of a human body are collected or transmitted through the metal sheet, the contact area of the metal sheet relative to the metal filaments and the human body tissue is relatively large, but the human body tissue has various shapes, and the method is not easy to operate for small cavities.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a flexible electrode with ductility and a preparation method thereof.
The invention discloses a flexible electrode with ductility, comprising: a flexible film;
one side of the flexible film is provided with a flexible conductive circuit, and the whole or part of the other side of the flexible film is provided with an elastic back glue layer.
As a further improvement of the invention, the flexible conductive circuit comprises a plurality of pairs of positive and negative electrodes, the positive and negative electrodes comprise electrode tips and electrode wires, one end of each electrode wire is connected with the electrode tip, and the other end of each electrode wire is connected to a connector; each pair of positive and negative electrodes is composed of conductive paste or conductive powder printed on the flexible film;
the conductive paste is silver paste or silver compound paste, and the conductive powder is silver powder or silver compound powder; the flexible film is a TPU film; the elastic back glue layer is of a three-layer structure, wherein the middle layer is a thin film, and the outer two layers are glue layers.
As a further improvement of the present invention,
the flexible film comprises a detection part and a connecting part which are connected, and the detection part and the connecting part form an obtuse angle; the electrode tip is arranged on the detection part, and the electrode wire is arranged on the connecting part;
alternatively, the first and second electrodes may be,
the flexible membrane comprises a detection part, a first branch, a second branch and a leading-out part; the first branch and the second branch are arranged in parallel at intervals, one end of the first branch and one end of the second branch are connected with the detection part, the other end of the first branch and the other end of the second branch are connected with the leading-out part, the first branch or the second branch is arranged in parallel with the axis of the detection part, and the first branch or the second branch is arranged perpendicular to the axis of the leading-out part; the electrode tip is arranged on the detection part, one part of the electrode wires are arranged on the first branch, the other part of the electrode wires are arranged on the second branch, and the tail ends of the electrode wires are converged and led out on the leading-out part.
As a further improvement of the invention, the electrode tips are corrugated, the distance between adjacent electrode tips is greater than 0.1mm, the electrode wires are linear, the distance between adjacent electrode wires is greater than 0.1mm, the joint is a standard joint, the electrode tips and the electrode wires are attached with anti-oxidation layers, and insulating oil is brushed on the oxidation layers of the electrode wires to form insulating layers;
the flexible electrode is pasted on a carrier for potential detection, and the carrier comprises one of a pipe body, a plate body and a block body; when the carrier is a pipe body, the distance between the central lines of the first branch and the second branch is half of the circumference of the pipe body.
As a further improvement of the invention, a PET film is arranged at the position of the back side of the flexible film, which is not adhered with the elastic back glue layer.
As a further improvement of the invention, the positive electrode and the negative electrode are composed of a silver electrode and a copper electrode, the silver electrode and the copper electrode are connected in a pressing mode or are connected through a rivet, and an elastic back glue layer is arranged on a joint of the silver electrode and the copper electrode and on the back side of the flexible film corresponding to the silver electrode.
As a further improvement of the invention, the positive and negative electrodes consist of silver electrodes and copper electrodes, and the silver electrodes and the copper electrodes are connected in a pressing way or connected through rivets; the joint of silver electrode and copper electrode and the silver electrode corresponds the dorsal part of flexible membrane is equipped with the elasticity gum layer, the copper electrode corresponds the dorsal part of flexible membrane is equipped with the PET membrane.
The invention provides a preparation method of a flexible electrode, which comprises the following steps:
preparing a flexible film;
printing conductive slurry or conductive powder on the upper side of the flexible film to form a flexible conductive circuit;
an elastic back glue layer is stuck on the back side part of the flexible film;
and a PET film is arranged at the position where the elastic back glue layer is not adhered to the back side of the flexible film.
The invention also provides a preparation method of the flexible electrode, which comprises the following steps:
preparing a flexible film;
printing silver paste or silver powder on the upper side of the flexible film to form a silver electrode;
the upper side of the flexible film is lapped with the silver electrode to form a copper electrode, and the silver electrode is connected with the copper electrode in a pressing mode or connected through a rivet;
and adhering an elastic back glue layer to the joint of the silver electrode and the copper electrode and the back side of the flexible film corresponding to the silver electrode.
The invention also provides a preparation method of the flexible electrode, which comprises the following steps:
preparing a flexible film;
printing silver paste or silver powder on the upper side of the flexible film to form a silver electrode;
the upper side of the flexible film is lapped with the silver electrode to form a copper electrode, and the silver electrode is connected with the copper electrode in a pressing mode or connected through a rivet;
an elastic back glue layer is pasted on the joint of the silver electrode and the copper electrode and the back side of the flexible film corresponding to the silver electrode;
and adhering a PET film on the back side of the flexible film corresponding to the copper electrode.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the flexible conductive circuit is arranged on the flexible film, and the flexible film is further adhered to the surface of a carrier needing to be bent or curved through the elastic back glue layer; it increases the ductility of the flexible electrode; the problem of poor contact caused by bending or curved surface of the carrier can be avoided;
according to the invention, the silver electrode and the copper electrode are connected on the flexible film in a printing manner, the back side of the flexible film is provided with the elastic back glue layer and the inelastic PET film, one end of the elastic back glue layer of the flexible electrode is pasted on the surface of a carrier needing to be bent or curved, and the end of the flexible electrode, provided with the PET film, of the back side is connected with the joint, which leads out the copper electrode, of the connector and an external connector, so that the problems of poor contact such as cracking and the like caused by the direct connection of the flexible silver electrode and the external connector are;
the flexible electrode has good flexibility, can deform along with the bending deformation of carriers such as the tracheal cannula and the like, but cannot influence the signal conduction function of the flexible electrode due to the deformation of the carriers such as the tracheal cannula and the like so as to influence the monitoring result; meanwhile, at the position needing to bear the tensile strength, the corresponding position on the back side of the flexible film is provided with the PET film, so that the tensile strength of the flexible film is improved.
Drawings
FIG. 1 is a longitudinal cross-sectional view of a disclosed malleable flexible electrode, in accordance with one embodiment of the present invention;
FIG. 2 is a schematic diagram of a malleable flexible electrode, according to one embodiment of the present disclosure;
FIG. 3 is another schematic diagram of a malleable flexible electrode, in accordance with one embodiment of the present disclosure;
FIG. 4 is a top view of a malleable flexible electrode, in accordance with another embodiment of the present invention;
FIG. 5 is a transverse cross-sectional view of FIG. 4;
fig. 6 is a schematic structural view of a nerve-monitoring endotracheal tube according to an embodiment of the present invention.
In the figure:
10. a flexible film; 11. a detection unit; 12. a connecting portion; 13. a first branch; 14. a second branch; 15. a lead-out section; 20. a flexible conductive circuit; 21. positive and negative electrodes; 22. an electrode tip; 23. an electrode wire; 30. an elastic gum layer; 40. a joint; 50. a through hole; 60. tracheal intubation; 61. inserting a tube; 62. positioning the cuff; 63. a PVC small hose; 64. a cuff inflation valve; 65. a cannula fitting; 70. silver paste electrodes; 71. a copper electrode; 72. a PET film.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention is described in further detail below with reference to the attached drawing figures:
as shown in fig. 1, the present invention provides a flexible electrode with ductility, which can be applied to a tube body for nerve detection, such as a tracheal cannula (silicone tube or PVC tube), and can also be applied to other structures requiring ductility of the electrode, such as a sheet-shaped or block-shaped carrier; it includes: a flexible film 10, a flexible conductive circuit 20 and an elastic backing layer 30; wherein, one side of the flexible film 10 is provided with a flexible conductive circuit 20, and the whole or part of the other side of the flexible film 10 is provided with an elastic gum layer 30.
Specifically, the method comprises the following steps:
the flexible conductive circuit 20 of the present invention includes a plurality of pairs of positive and negative electrodes 21, preferably four pairs of positive and negative electrodes 21 as shown in fig. 2 and 3; the positive and negative electrodes 21 can form a loop by themselves, the conductive circuits have certain elasticity, when the flexible film deforms along with stretching, bending, folding and the like, the conductive circuits cannot be disconnected, and each pair of positive and negative electrodes 21 consists of conductive paste or conductive powder printed on the flexible film 10; the flexible film 10 is a thin film made of TPU or PET film, preferably TPU film; the conductive paste used for printing is a metal paste or a paste of a metal compound, preferably a silver paste or a silver compound paste; the conductive powder used for printing is a metal powder or a powder of a metal compound, preferably a silver powder or a silver compound powder.
Each electrode of the positive and negative electrodes 21 of the present invention comprises an electrode head 22 and an electrode wire 23, one end of the electrode wire 23 is connected with the electrode head 22, and the other end is connected with a joint 40; the electrode tips of the positive and negative electrodes 21 form a sensing point for transmitting the sensed potential to an external monitor or the like through the electrode wire 23 and the connector 40. Further, the electrode tips 22 are corrugated, the distance between adjacent electrode tips 22 is greater than 0.1mm, the electrode wires 23 are linear, and the distance between adjacent electrode wires 23 is greater than 0.1 mm; the connector 40 is a standard connector and can be directly connected with corresponding equipment (such as a monitor and the like); the electrode tip 22 and the electrode wire 23 are provided with an anti-oxidation layer to prevent the electrode and the electrode wire from being oxidized; the electrode wire 23 may be coated with an insulating oil on the oxidation-resistant layer to form an insulating layer.
As shown in fig. 2, as a structure of the flexible electrode, the flexible film 10 of the present invention includes a detection portion 11 and a connection portion 12 which are integrated, the detection portion 11 is in a short rectangular shape (four corners are in arc transition), the connection portion 12 is in a long rectangular shape, wherein, as a feasible size design, the length and width of the detection portion 11 is 55mm and 36mm, and the length and width of the connection portion 12 is 340mm and 8.5 mm; the long edge of the detection part 11 and the long edge of the connecting part 12 form an obtuse angle and are in arc transition, and the preferred angle is 120-145 degrees; through the obtuse angle connection of the detection part 11 and the connection part 12, the connection part 12 can be wound on the tube body in the spiral upward direction after the detection part 11 is pasted on the tube body, so that the flexible electrode is stressed on the tube body uniformly and most scales on the tube body can be exposed, and the reading of the flexible electrode is not influenced.
As shown in fig. 2, the present invention provides an electrode tip 22 on the sensing part 11 and an electrode wire 23 on the junction part 12; eight electrode wires 23 are correspondingly connected to the electrode head 22, and the other ends are connected to corresponding pins of the joint 40. Further, the electrode tip 22 of the present invention is corrugated, and the corrugated design can increase the area of the electrode tip on the detection portion 11 on the premise of limited detection portion area, thereby improving the detection accuracy; furthermore, the width of the electrode tip 22 is 3-4 mm, and the distance between the connected electrode tips is 0.5-1 mm; further, the electrode wires 23 of the present invention are linear and have a width of 0.5mm, and the space between the connected electrode wires 23 is 0.5 mm; further, the joint 40 of the present invention is preferably a dupont joint; further, the present invention brushes an insulating oil on the electrode wire 23 (at the position of the dotted frame shown in fig. 2), thereby forming an insulating layer.
As shown in fig. 3, as another structure of the flexible electrode, the flexible membrane 10 of the present invention includes a detection portion 11, a first branch 13, a second branch 14 and a lead-out portion 15 which are integrated, the detection portion 11 is in a short rectangular shape (four corners are in arc transition), the first branch 13, the second branch 14 and the lead-out portion 15 are in a long rectangular shape, wherein, as a feasible size design, the length and width of the detection portion 11 is 55mm and 36mm, the length and width of the first branch 13 and the second branch 14 is 138mm and 7.5mm, the junction of the first branch 13 or the second branch 14 is in a tapered transition of 22mm, and the length and width of the lead-out portion 15 is 58mm and 13.5 mm; the first branch 13 and the second branch 14 are arranged in parallel at intervals, and a closed through hole 50 is formed between the first branch and the second branch; one end of the first branch 13 and one end of the second branch 14 are connected with the detection part 11, the other end of the first branch 13 and the other end of the second branch 14 are connected with the leading-out part 15, the first branch 13 or the second branch 14 are arranged in parallel with the axis of the detection part 11, and the first branch 13 or the second branch 14 is arranged perpendicular to the axis of the leading-out part 15 and is in circular arc transition at the connection position. Furthermore, the distance between the central lines of the first branch 13 and the second branch 14 is half of the circumference of the pipe body, the design of the structure ensures that the first branch 13 can be pasted on the upper side wall of the pipe body, and the second branch 14 is symmetrically pasted on the lower side wall of the pipe body, so that the stress of the flexible electrode on the pipe body is uniform; meanwhile, the scales on the pipe body can be exposed by the design of the through hole 50, and the reading of the pipe body is not influenced; further, the width of the through hole 50 is preferably 1/4 of the cannula circumference. .
As shown in fig. 3, eight electrode tips 22 are arranged on the detection part 11, four electrode wires 23 are arranged on the first branch 13, the rest four electrode wires 23 are arranged on the second branch 14, and the tail ends of the eight electrode wires 23 are converged and led out on the leading-out part 15; based on the above structure, one end of the eight electrode wires 23 is correspondingly connected to the electrode head 22, and the other end is connected to the corresponding pin of the joint 40. Further, the electrode tip 22 of the present invention is corrugated, and the corrugated design can increase the area of the electrode tip on the detection portion 11 on the premise of limited detection portion area, thereby improving the detection accuracy; furthermore, the width of the electrode tip 22 is 3-4 mm, and the distance between the connected electrode tips is 0.5-1 mm; further, the electrode wires 23 of the present invention are linear and have a width of 1mm, and the space between the connected electrode wires 23 is 0.5 mm; further, the joint 40 of the present invention is preferably a dupont joint; further, the present invention brushes an insulating oil on the electrode line 23 (at the position of the dotted frame shown in fig. 3), thereby forming an insulating layer. Further, in the present invention, a transparent sheet having a thickness of 0.2mm may be attached to the lead-out portion 15.
The elastic back glue layer 30 has a three-layer structure, wherein the middle layer is a thin film, and the outer two layers are glue layers; the gum thickness is less than 0.2mm, has elasticity, and deformation along with the deformation of flexible membrane can select different gums simultaneously according to pasting the difference of material.
Taking the existing trachea cannula as an example, the trachea cannula comprises a cannula, a positioning cuff, a PVC small hose, a cuff inflation valve and a cannula joint; the invention can paste the flexible electrode on the positioning cuff, and then completes the nerve connection monitoring.
Because the flexible electrode adopts the elastic silver electrode, the flexible film and the elastic gum layer, when the flexible electrode is adhered to the carrier (the tracheal cannula), one part of the flexible electrode is adhered to the tracheal cannula, and the other part of the flexible electrode is suspended and then connected with the electrode joint, as shown in fig. 6; when the silver paste electrode is connected with the standard electrode joint 40, if the strength of the silver paste electrode is low, the silver paste electrode is easy to crack at the joint of the silver paste electrode and the joint, so that the problem of poor contact between the electrode and an interface is caused; to this end, the invention adopts the following solution:
the first solution is:
according to the invention, the PET film is arranged at the position where the elastic back glue layer is not adhered to the back side of the flexible film, and the strength of the suspended flexible film is increased by arranging the PET film, so that the overall strength of the flexible electrode is improved, and the cracking problem of the silver paste electrode when being connected with a standard electrode joint can be avoided.
The preparation method comprises the following steps: preparing a flexible film; printing conductive slurry or conductive powder on the upper side of the flexible film to form a flexible conductive circuit; an elastic back glue layer is stuck on the back side part of the flexible film; and a PET film is arranged at the position where the elastic back glue layer is not adhered to the back side of the flexible film.
The second solution is:
the invention fixes the joint position of the silver electrode and the copper electrode on the flexible film, and realizes the connection of the silver electrode and the copper electrode during printing. The method specifically comprises the following steps: the positive electrode and the negative electrode consist of a silver electrode and a copper electrode, the silver electrode and the copper electrode are connected in a pressing way or are connected through a rivet, and the pressing way is preferably adopted; and the joints of the silver electrodes and the copper electrodes and the back sides of the flexible films corresponding to the silver electrodes are provided with elastic back glue layers. Based on the structure, the joint of the silver electrode and the copper electrode is fixed on a carrier (the tube wall of the tracheal cannula) through the elastic gum layer, so that the joint is not easy to crack; and the firmness and the stability of the connection between the lead-out copper electrode and an external joint are enhanced.
The preparation method comprises the following steps: preparing a flexible film; printing silver paste or silver powder on the upper side of the flexible film to form a silver electrode; a copper electrode is arranged on the upper side of the flexible film in a lap joint mode, and the silver electrode is connected with the copper electrode in a pressing mode or connected through a rivet; and an elastic back glue layer is adhered to the joint of the silver electrode and the copper electrode and the back side of the flexible film corresponding to the silver electrode.
The third solution is:
the invention fixes the joint position of the silver electrode and the copper electrode on the flexible film, and realizes the connection of the silver electrode and the copper electrode during printing. The method specifically comprises the following steps:
the invention fixes the joint position of the silver electrode and the copper electrode on the flexible film, and realizes the connection of the silver electrode and the copper electrode during printing. The method specifically comprises the following steps: as shown in fig. 4 and 5, the positive and negative electrodes 21 of the present invention are composed of a silver electrode 71 and a copper electrode 72 connected with each other, the joint of the silver electrode 71 and the copper electrode 72 and the back side of the flexible film 10 corresponding to the silver electrode 71 are provided with an elastic back glue layer 30, and the back side of the flexible film 10 corresponding to the copper electrode 72 is provided with an inelastic PET film 73; based on the structure, the double reinforcement mode of the PET film and the copper electrode is adopted, namely, the joint of the silver electrode 71 and the copper electrode 72 is fixed on a carrier (the tube wall of the tracheal cannula) through the elastic back glue layer 30 and is not easy to crack; and the lead-out copper electrode 72 enhances the firmness and stability of the connection with the external tab.
The preparation method comprises the following steps: printing silver paste or silver powder on the upper side of the flexible film 10 from the left end to form a silver electrode 71; the copper electrode 72 is arranged on the upper side of the flexible film 10 in a lap joint mode, the silver electrode 71 is connected with the copper electrode 72 in a pressing mode or connected through a rivet, and the specific printing length of the silver electrode 71 and the copper electrode 72 and the lap joint length of the joint are subject to actual requirements; an elastic backing layer 30 is attached to the joint of the silver electrode 71 and the copper electrode 72 and to the back side of the flexible film corresponding to the silver electrode 71, and a PET film 73 is attached to the back side of the flexible film corresponding to the copper electrode 72.
As shown in fig. 6, the present invention provides a nerve-monitoring endotracheal intubation, which relates to the field of medical devices and simultaneously realizes the functions of human respiratory tract and nerve monitoring; it includes: the intubation 61, the positioning cuff 62, the PVC small hose 63, the cuff inflation valve 64 and the intubation joint 65 form a complete endotracheal intubation 60; simultaneously, still include: a flexible electrode; the flexible electrode is adhered to the outer wall of the cannula 61 above the positioning cuff 62; the flexible electrode comprises a flexible film 10, a flexible conductive circuit 20 and an elastic gum layer 30, wherein the flexible conductive circuit 20 is arranged on one side of the flexible film 10, and the elastic gum layer 30 is arranged on the whole or part of the other side of the flexible film 10. Furthermore, the flexible electrode can be applied to other structures which have requirements on the ductility of the electrode, such as sheet-shaped and block-shaped carriers, besides the tracheal intubation (silicone tube or PVC tube).
Specifically, the method comprises the following steps:
in the structure of the trachea cannula 60, the inserting end of a cannula 61 is provided with a positioning cuff 62, the other end is provided with a cannula joint 65, and the cannula 61 is provided with scales; the PVC small hose 63 is inserted into the cannula 61 from the middle part of the cannula 61, one end of the PVC small hose 63 is communicated with the positioning cuff 62 to realize the inflation and positioning of the positioning cuff 62, the other end is provided with a cuff inflation valve 64, and the cuff inflation valve 64 is connected with an inflation end (not shown in the figure); the flexible electrode is completely attached to the insertion tube due to the shape design, and the flexible electrode is prevented from wrinkling, excessive burrs and the like after attachment; for example, when the insertion tube is a cylindrical tube, the pasting part of the flexible electrode is unfolded to be square and has a width not larger than the circumference of the insertion tube; when the intubation tube is an arc tube with a certain radian, the pasting part of the flexible electrode can be in a matched shape, so that the pasting part can be matched with the structure of the intubation tube; meanwhile, the invention needs to ensure that the scale can be exposed out of the cannula after the flexible electrode is pasted; for example, the flexible electrode can be hollowed at the position corresponding to the scale so as to expose the scale after being pasted; or a spiral wound flexible electrode to display a scale or the like.
The invention has the advantages that:
according to the invention, the flexible conductive circuit is arranged on the flexible film, and the flexible film is further adhered to the surface of a carrier needing to be bent or curved through the elastic back glue layer; it increases the ductility of the flexible electrode; the problem of poor contact caused by bending or curved surface of the carrier can be avoided;
according to the invention, the silver electrode and the copper electrode are connected on the flexible film in a printing manner, the back side of the flexible film is provided with the elastic back glue layer and the inelastic PET film, one end of the elastic back glue layer of the flexible electrode is pasted on the surface of a carrier needing to be bent or curved, and the end of the flexible electrode, provided with the PET film, of the back side is connected with the joint, which leads out the copper electrode, of the connector and an external connector, so that the problems of poor contact such as cracking and the like caused by the direct connection of the flexible silver electrode and the external connector are;
the flexible electrode has good flexibility, can deform along with the bending deformation of the tracheal cannula, but cannot influence the signal conduction function of the flexible electrode due to the deformation of the tracheal cannula so as to influence the monitoring result; meanwhile, the back film is added at the position needing to bear the tensile strength so as to improve the tensile strength of the back film.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A malleable flexible electrode, comprising: a flexible film;
one side of the flexible film is provided with a flexible conductive circuit, and the whole or part of the other side of the flexible film is provided with an elastic back glue layer.
2. The flexible electrode according to claim 1, wherein the flexible conductive circuit comprises a plurality of pairs of positive and negative electrodes, the positive and negative electrodes comprise electrode tips and electrode wires, one end of each electrode wire is connected with the electrode tip, and the other end of each electrode wire is connected with a connector; each pair of positive and negative electrodes is composed of conductive paste or conductive powder printed on the flexible film;
the conductive paste is silver paste or silver compound paste, and the conductive powder is silver powder or silver compound powder; the flexible film is a TPU film; the elastic back glue layer is of a three-layer structure, wherein the middle layer is a thin film, and the outer two layers are glue layers.
3. The flexible electrode of claim 1,
the flexible film comprises a detection part and a connecting part which are connected, and the detection part and the connecting part form an obtuse angle; the electrode tip is arranged on the detection part, and the electrode wire is arranged on the connecting part;
alternatively, the first and second electrodes may be,
the flexible membrane comprises a detection part, a first branch, a second branch and a leading-out part; the first branch and the second branch are arranged in parallel at intervals, one end of the first branch and one end of the second branch are connected with the detection part, the other end of the first branch and the other end of the second branch are connected with the leading-out part, the first branch or the second branch is arranged in parallel with the axis of the detection part, and the first branch or the second branch is arranged perpendicular to the axis of the leading-out part; the electrode tip is arranged on the detection part, one part of the electrode wires are arranged on the first branch, the other part of the electrode wires are arranged on the second branch, and the tail ends of the electrode wires are converged and led out on the leading-out part.
4. The flexible electrode of claim 3, wherein the electrode tips are corrugated and the spacing between adjacent electrode tips is greater than 0.1mm, the electrode wire is linear and the spacing between adjacent electrode wires is greater than 0.1mm, the joint is a standard joint, the electrode tips and the electrode wire are attached with an anti-oxidation layer, and the oxidation layer of the electrode wire is brushed with insulating oil to form an insulating layer;
the flexible electrode is pasted on a carrier for potential detection, and the carrier comprises one of a pipe body, a plate body and a block body; when the carrier is a pipe body, the distance between the central lines of the first branch and the second branch is half of the circumference of the pipe body.
5. The flexible electrode according to any one of claims 1 to 4, wherein a PET film is provided on the back side of the flexible film at a position where the elastic backing layer is not adhered.
6. The flexible electrode according to any one of claims 2 to 4, wherein the positive electrode and the negative electrode are composed of a silver electrode and a copper electrode, the silver electrode and the copper electrode are connected in a pressing mode or are connected through a rivet, and an elastic back glue layer is arranged on the joint of the silver electrode and the copper electrode and on the back side of the flexible film corresponding to the silver electrode.
7. The flexible electrode according to any one of claims 2 to 4, wherein the positive and negative electrodes are composed of silver electrodes and copper electrodes, and the silver electrodes and the copper electrodes are connected in a pressing manner or through rivets; the joint of silver electrode and copper electrode and the silver electrode corresponds the dorsal part of flexible membrane is equipped with the elasticity gum layer, the copper electrode corresponds the dorsal part of flexible membrane is equipped with the PET membrane.
8. A method of making a flexible electrode according to claim 5, comprising:
preparing a flexible film;
printing conductive slurry or conductive powder on the upper side of the flexible film to form a flexible conductive circuit;
an elastic back glue layer is stuck on the back side part of the flexible film;
and a PET film is arranged at the position where the elastic back glue layer is not adhered to the back side of the flexible film.
9. A method of making a flexible electrode according to claim 6, comprising:
preparing a flexible film;
printing silver paste or silver powder on the upper side of the flexible film to form a silver electrode;
the upper side of the flexible film is lapped with the silver electrode to form a copper electrode, and the silver electrode is connected with the copper electrode in a pressing mode or connected through a rivet;
and adhering an elastic back glue layer to the joint of the silver electrode and the copper electrode and the back side of the flexible film corresponding to the silver electrode.
10. A method of making a flexible electrode according to claim 7, comprising:
preparing a flexible film;
printing silver paste or silver powder on the upper side of the flexible film to form a silver electrode;
the upper side of the flexible film is lapped with the silver electrode to form a copper electrode, and the silver electrode is connected with the copper electrode in a pressing mode or connected through a rivet;
an elastic back glue layer is pasted on the joint of the silver electrode and the copper electrode and the back side of the flexible film corresponding to the silver electrode;
and adhering a PET film on the back side of the flexible film corresponding to the copper electrode.
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