CN111166997A

CN111166997A - Medical catheter equipped with thin film electrode and manufacturing method thereof

Info

Publication number: CN111166997A
Application number: CN201811239105.7A
Authority: CN
Inventors: 叶茂林
Original assignee: Shenzhen Med Link Electronics Tech Co ltd
Current assignee: Shenzhen Med Link Electronics Tech Co ltd
Priority date: 2018-10-23
Filing date: 2018-10-23
Publication date: 2020-05-19

Abstract

The present invention relates to a medical catheter equipped with a membrane electrode and a method for manufacturing the same. The medical catheter comprises a catheter, a conducting circuit, an electrode and a conducting contact which are attached to the wall of the catheter, and an insulating film covering the conducting circuit. The conductive lines, electrodes and conductive contacts are all conductive ink printed on the wall of the catheter by a printing process. The conductive ink is made of an ink including a conductive metal material component or a carbonaceous conductive paste component. According to the invention, the thin-film-shaped electrode, the conductive circuit and the conductive contact are printed on the catheter by using conductive ink, so that the flexibility of the catheter is not influenced, the friction coefficient of the contact between the catheter and a human organ is greatly reduced, the damage of the insertion and extraction of the catheter to the mucosa and the surface tissue of the human organ is effectively prevented, the difficulty of the insertion and extraction operation of the catheter is reduced compared with the prior art, and the operation efficiency is improved.

Description

Medical catheter equipped with thin film electrode and manufacturing method thereof

Technical Field

The present invention relates to accessories for medical devices, and more particularly to medical catheters for use in interventional procedures.

Background

The prior art is used for internal intervention treatment's pipe to dispose the electrode mostly, the electrode is made with conductive metal material usually, for example, the stainless steel spring electrode of winding outside the pipe, prior art electrode structure has not only reduced the holistic flexibility of pipe, has increased the degree of difficulty of intubate operation, and the electrode of stereoplasm probably rubs the human body when the pipe plug operation in addition, causes influence or harm to the organ mucosa, needs the professional of rich experience to accomplish the operation, and the operation efficiency is reduced, and medical personnel's the operation degree of difficulty has been increased.

Disclosure of Invention

The invention aims to solve the technical problem of avoiding the defects of the prior art and provides a medical catheter which is provided with a film electrode, does not influence the flexibility of the catheter and reduces the friction coefficient and a manufacturing method thereof.

The technical problem to be solved by the invention can be realized by adopting the following technical scheme:

a medical catheter with a film electrode is designed and manufactured and used for medical electric equipment. The conductive lines, electrodes and conductive contacts are all conductive ink printed on the wall of the catheter by a printing process. The conductive ink is made of an ink including a conductive metal material component or a carbonaceous conductive paste component. The insulating film is an insulating ink printed on the conductive line by means of a printing process. The insulating ink is made of an ink including an insulating material component. The conductive circuit is electrically connected with the electrode and the conductive contact respectively, and the conductive contact is electrically connected with an electrical connection port of the medical electrical equipment, so that an electrical signal is transmitted between the electrode and the medical electrical equipment through the conductive contact and the conductive circuit.

Specifically, the catheter is also provided with at least one balloon sleeved on the catheter. For the portion of the catheter covered by the balloon envelope, the electrodes, conductive contacts and conductive traces are attached to the wall of the balloon.

In addition, the conduit includes a main tube, and at least one branch tube. At least one pipeline cavity is arranged in the conduit. The branch pipes are communicated with the main pipe by means of the pipe cavity, or more than two branch pipes are communicated through the main pipe by means of the pipe cavity. The electrode is attached to the pipe wall of at least one of the main pipe and the branch pipe, the conductive contact is also attached to the pipe wall of at least one of the main pipe or the branch pipe, and the conductive circuit is attached to the pipe wall of at least one of the main pipe and the branch pipe along the axial direction, so that the electrode and the conductive contact are electrically connected through the conductive circuit.

More specifically, the main pipe and/or the branch pipe is also provided with at least one balloon sleeved on the pipe wall. For the portion of the vessel wall covered by the balloon envelope, the electrodes, conductive contacts and conductive traces are attached to the wall of the balloon envelope.

The technical problem to be solved by the invention can also be solved by adopting the following technical scheme:

a manufacturing method of a medical catheter provided with a membrane electrode is provided, which comprises the following steps:

preparing conductive ink by using a conductive metal material or a carbonaceous conductive adhesive as a component;

preparing insulating ink by using an insulating material as a component;

printing conductive ink on the wall of the conduit by a printing process, so as to attach a film-shaped electrode, a conductive circuit and a conductive contact on the wall of the conduit; the conductive contact is used for electrically connecting an electric connection port of the medical electrical equipment, so that an electric signal can be transmitted between the electrode and the medical electrical equipment through the conductive contact and the conductive circuit;

insulating ink is printed on the conductive circuit by means of a printing process, so that a film-shaped insulating film is covered on the conductive circuit.

When the catheter is provided with the saccule, the manufacturing method of the medical catheter with the film electrode specifically comprises the following steps:

preparing insulating ink by using an insulating material as a component;

sleeving at least one saccule on the catheter;

printing conductive ink on the wall of the catheter by a printing process, wherein the conductive ink is printed on the wall of the balloon when the catheter wall covered by the balloon is met, so that the catheter is continuously attached with a film-shaped electrode, a conductive circuit and a conductive contact; the conductive contact is used for electrically connecting an electric connection port of the medical electrical equipment, so that an electric signal can be transmitted between the electrode and the medical electrical equipment through the conductive contact and the conductive circuit;

When the catheter is provided with the branch structure, the manufacturing method of the medical catheter provided with the membrane electrode specifically comprises the following steps:

preparing insulating ink by using an insulating material as a component;

forming a conduit with a main pipe and at least one branch pipe connected to each other; at least one pipeline cavity which is isolated from each other is arranged in the main pipe, so that the branch pipes are communicated with the main pipe by virtue of the pipeline cavity, or more than two branch pipes are communicated by the main pipe by virtue of the pipeline cavity;

printing conductive ink on the pipe walls of the main pipe and/or the branch pipes by a printing process, so as to attach film-shaped electrodes, conductive circuits and conductive contacts on the pipe walls of the guide pipes; the conductive contact is used for electrically connecting an electric connection port of the medical electrical equipment, so that an electric signal can be transmitted between the electrode and the medical electrical equipment through the conductive contact and the conductive circuit;

When the catheter has both the balloon and the branch structure, the manufacturing method of the medical catheter provided with the film electrode more specifically comprises the following steps:

preparing insulating ink by using an insulating material as a component;

sleeving at least one saccule on the main pipe and/or the branch pipe;

printing conductive ink on the wall of the main pipe and/or the branch pipe by a printing process, wherein the conductive ink is printed on the wall of the saccule when the pipe wall covered by the saccule is met, so that the catheter is continuously attached with a film-shaped electrode, a conductive circuit and a conductive contact; the conductive contact is used for electrically connecting an electric connection port of the medical electrical equipment, so that an electric signal can be transmitted between the electrode and the medical electrical equipment through the conductive contact and the conductive circuit;

Compared with the prior art, the medical catheter with the membrane electrode and the manufacturing method thereof have the technical effects that:

according to the invention, the thin-film-shaped electrode, the conductive circuit and the conductive contact are printed on the catheter by using conductive ink, so that the flexibility of the catheter is not influenced, the friction coefficient of the contact between the catheter and a human organ is greatly reduced, the damage of the insertion and extraction of the catheter to the mucosa and the surface tissue of the human organ is effectively prevented, the difficulty of the insertion and extraction operation of the catheter is reduced compared with the prior art, and the operation efficiency is improved.

Drawings

FIG. 1 is a schematic front view of a front projection of a first embodiment of the medical catheter with a thin film electrode and a method for manufacturing the same according to the present invention;

3 FIG. 3 2 3 is 3 an 3 enlarged 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3

FIG. 3 is an enlarged partial schematic view of the indicated portion D of FIG. 2;

FIG. 4 is an enlarged cross-sectional view of B-B shown in FIG. 1;

FIG. 5 is an enlarged cross-sectional view of C-C shown in FIG. 1;

FIG. 6 is an enlarged partial schematic view of the indicated portion E of FIG. 5;

FIG. 7 is a schematic front view of a front projection of a second embodiment of the present invention;

FIG. 8 is an enlarged cross-sectional view of F-F shown in FIG. 7;

FIG. 9 is an enlarged cross-sectional view of G-G shown in FIG. 7;

fig. 10 is an enlarged cross-sectional view of H-H shown in fig. 7.

Detailed Description

The embodiments are described in further detail below with reference to the attached drawings.

The invention provides a method for manufacturing a medical catheter with a membrane electrode, which comprises the following steps:

preparing insulating ink by using an insulating material as a component;

as shown in fig. 1 to 10, a conductive ink is printed on the wall of the conduit 5 by means of a printing process, so that a film-like electrode 1, a conductive line 2 and a conductive contact 3 are attached to the wall of the conduit 5; the conductive contact 3 is used for electrically connecting an electrical signal port of the medical electrical equipment, so that an electrical signal can be transmitted between the electrode 1 and the medical electrical equipment through the conductive contact 3 and the conductive circuit 2;

insulating ink is printed on the conductive path 2 by a printing process, thereby covering the conductive path 2 with a film-like insulating film 4.

The printing process refers to a process capable of firmly and stably attaching the conductive ink to the guide tube 5 and the insulating ink to the wire line 2. In various embodiments of the present invention, the printing process is, but not limited to, a pad printing or screen printing process.

Based on the manufacturing method, the invention provides a medical catheter with a film electrode, which is used for medical electrical equipment. Medical electrical equipment such as an electrocardiogram pacing device, various therapeutic apparatuses, a vital sign monitoring device and the like. The medical electrical equipment should be provided with an electrical connection port for transmitting electrical signals with the electrode. As shown in fig. 1 to 10, the medical catheter includes a catheter 5, at least one film-like conductive circuit 2 attached to a wall of the catheter 5, at least one film-like electrode 1 and at least one film-like conductive contact 3, and an insulating film 4 covering the conductive circuit. The electrodes 1, conductive tracks 2 and conductive contacts 3 can be attached to both the outer and inner tube walls of the conduit 5. The conductive track 2, the electrodes 1 and the conductive contacts 3 are all conductive ink printed on the wall of the catheter by means of a printing process. The conductive ink is made of an ink including a conductive metal material component or a carbonaceous conductive paste component. The insulating film 4 is an insulating ink printed on the conductive line 2 by means of a printing process. The insulating ink is made of an ink including an insulating material component. The conductive line 2 electrically connects the electrode 1 and the conductive contact 3, respectively, and the conductive contact 3 electrically connects an electrical connection port of the medical electrical apparatus so that an electrical signal is transmitted between the electrode 1 and the medical electrical apparatus through the conductive contact 3 and the conductive line 2.

According to the invention, the thin film-shaped electrode 1, the conductive circuit 2 and the conductive contact 3 are printed on the catheter 5 by using conductive ink, the flexibility of the catheter 5 is not influenced, the friction coefficient of the contact between the catheter 5 and human organs is greatly reduced, the damage of the catheter to mucous membranes and surface tissues of the human organs due to the insertion and extraction of the catheter is effectively prevented, the difficulty of the insertion and extraction operation of the catheter 5 is reduced compared with the prior art, and the operation efficiency is improved.

The catheter 5 of the present invention is a catheter for use in various therapeutic and monitoring interventions. The specific structures of various catheters 5 are different due to different purposes, and the electrode 1, the conductive circuit 2, the conductive contact 3 and the insulating film 4 are printed on the wall of the catheter 5, so that the structure of the catheter 5 is not changed and is not influenced, and the scheme of the invention is suitable for various medical catheters. The following description is given of specific examples of the implementation of the invention on different catheter 5 structures in only two embodiments.

In a first embodiment of the present invention, as shown in fig. 1 to 6, the catheter 5 is used as an endotracheal tube, and at least one balloon 54 is provided on the catheter 5. The balloon 54 should be provided with an air chamber therein which communicates with the catheter 5. Then, the position of the electrode 1 can be set on the endotracheal tube according to the condition to be treated or the monitored part, and the conductive circuit 2 and the conductive contact 3 can be set correspondingly according to the actual situation. Then, for the part of the catheter 5 covered by the balloon 54 in a sleeving manner, the electrode 1, the conductive contact 3 and the conductive circuit 2 which should be arranged on the catheter part are attached to the balloon wall of the balloon 54, and the conductive ink attached to the balloon wall of the balloon 54 is one of the electrode 1, the conductive contact 3 and the conductive circuit 2, which is required according to the actual application of the catheter 5. As shown in fig. 1 to 6, two conductive inks are printed on the wall of the catheter 5 and the large wall of the balloon 54, each conductive ink including a conductive line 2 disposed along the axis of the catheter, and electrodes 1 and conductive contacts 3 disposed at both ends of the conductive line 2, respectively. As shown in fig. 1 to 3, the electrodes 1 are printed on the wall of the balloon 54. As shown in fig. 1 and 4, the conductive line 2 is covered with an insulating film 4. As shown in fig. 1, 5 and 6, the conductive contacts 3 are attached to the end of the catheter 5 where the balloon 54 is not located. The enlarged scale of fig. 2, 4 and 5 is not consistent, the thickness of the electrode 1, the conductive track 2 and the conductive contact 3 should be consistent, and the thickness of the insulating film 4 is also substantially the same as the thickness of the conductive track 2, so that the conductive ink printed on the conduit 5 is smooth; moreover, because the thicknesses of the electrode 1, the conductive circuit 2, the conductive contact 3 and the insulating film 4 are far smaller than the radius of the catheter 5, and no thickness transition which can cause obvious body feeling exists between the insulating film 4 and the electrode 1 and the conductive contact 3, the mucosa or superficial tissues of human organs cannot be damaged when the catheter 5 is inserted and pulled out.

In the first embodiment of the present invention, as shown in fig. 2, 4 and 5, a conduit lumen 53 is further provided in the conduit 5 to extend through the conduit 5.

Based on the structure, the manufacturing method of the medical catheter with the membrane electrode specifically comprises the following steps:

preparing insulating ink by using an insulating material as a component;

sleeving at least one balloon 54 on the catheter 5;

printing conductive ink on the wall of the catheter 5 by means of a printing process, the conductive ink being printed on the wall of the balloon 54 when encountering the wall covered by the balloon 54, whereby the catheter 5 is continuously attached with the film-like electrode 1, the conductive line 2 and the conductive contact 3; the conductive contact 3 is used for electrically connecting an electrical connection port of the medical electrical equipment, so that an electrical signal can be transmitted between the electrode 1 and the medical electrical equipment through the conductive contact 3 and the conductive circuit 2;

In a second embodiment of the invention, shown in fig. 7 to 10, the catheter 5 is used as a urinary catheter and comprises a main tube 51 and at least one branch tube 52. At least one conduit cavity 53 is provided in the conduit 5. The branch pipe 52 communicates with the main pipe 52 via the pipe chamber 53, or two or more branch pipes communicate with the main pipe 51 via the pipe chamber 53. The electrode 1 is attached to the pipe wall of at least one of the main pipe 51 and the branch pipe 52, the conductive contact 3 is also attached to the pipe wall of at least one of the main pipe 51 or the branch pipe 52, and the conductive circuit 2 is axially attached to the pipe wall of at least one of the main pipe 51 and the branch pipe 52, so that the electrode 1 and the conductive contact 3 are electrically connected through the conductive circuit 2. In the second embodiment of the present invention, the electrode 1, the conductive trace 2, and the conductive contact 3 are attached to the main pipe 51, and it is obvious that the electrode 1, the conductive trace 2, and the conductive contact 3 may be provided on the branch pipe 52. When there are a plurality of electrodes 1, the electrodes 1 may be provided on the respective branch pipes 52, or the electrodes 1 may be provided on both the main pipe 51 and the branch pipes 52, as necessary. The enlarged scale of fig. 8 to 10 is not uniform, the thicknesses of the electrode 1, the conductive line 2 and the conductive contact 3 should be uniform, and the thickness of the insulating film 4 is also substantially the same as that of the conductive line 2.

preparing insulating ink by using an insulating material as a component;

forming the duct 5 with a main duct 51 and at least one branch duct 52 connected to each other; at least one pipe chamber 53 isolated from each other is provided in the main pipe 5, so that the branch pipes 52 communicate with the main pipe 51 via the pipe chamber 53, or two or more branch pipes 52 communicate with the main pipe 51 via the pipe chamber 53;

printing conductive ink on the pipe wall of the main pipe 51 and/or the branch pipe 52 by a printing process, so as to attach the film-shaped electrode 1, the conductive circuit 2 and the conductive contact 3 on the pipe wall of the conduit; the conductive contact 3 is used for electrically connecting an electrical connection port of the medical electrical equipment, so that an electrical signal can be transmitted between the electrode 1 and the medical electrical equipment through the conductive contact 3 and the conductive circuit 2;

In a second embodiment of the present invention, as shown in fig. 7, the catheter 5 is also provided with a balloon structure, so that the main tube 51 and/or the branch tube 52 are further provided with at least one balloon sleeved on the tube wall. In the second embodiment of the invention, the electrode 1, the conductive circuit 2 or the conductive contact 3 do not need to be arranged on the tube wall covered by the saccule, and when the arrangement is needed, the electrode 1, the conductive contact 3 and the conductive circuit 2 are attached to the wall of the saccule for the tube wall covered by the saccule in a sleeved mode.

Based on the above structure, the method for manufacturing a medical catheter with a membrane electrode more specifically comprises the following steps:

preparing insulating ink by using an insulating material as a component;

forming the duct 5 with a main duct 51 and at least one branch duct 52 connected to each other; at least one pipe chamber 53 isolated from each other is provided in the main pipe 51, so that the branch pipes 52 communicate with the main pipe 51 via the pipe chamber 53, or two or more branch pipes 52 communicate with the main pipe 51 via the pipe chamber 53;

sleeving at least one balloon on main pipe 51 and/or branch pipe 52;

printing conductive ink on the wall of the main tube 51 and/or branch tube 52 by means of a printing process, the conductive ink being printed on the wall of the balloon when encountering the wall covered by the balloon, whereby the catheter is continuously attached with the film-like electrode 1, conductive line 2 and conductive contact 3; the conductive contact 3 is used for electrically connecting an electrical connection port of the medical electrical equipment, so that an electrical signal can be transmitted between the electrode 1 and the medical electrical equipment through the conductive contact 3 and the conductive circuit 2;

Claims

1. A medical catheter with a film electrode is used for medical electrical equipment; the method is characterized in that:

comprises a catheter, at least one film-shaped conducting circuit, at least one film-shaped electrode and at least one film-shaped conducting contact which are attached to the wall of the catheter, and an insulating film which covers the conducting circuit;

the conductive circuit, the electrode and the conductive contact are conductive ink printed on the pipe wall of the conduit by means of a printing process; the conductive ink is made of ink containing conductive metal material components or carbonaceous conductive adhesive components; the insulating film is insulating ink printed on the conducting circuit by means of a printing process; the insulating ink is made of ink comprising insulating material components;

the conductive circuit is electrically connected with the electrode and the conductive contact respectively, and the conductive contact is electrically connected with an electrical connection port of the medical electrical equipment, so that an electrical signal is transmitted between the electrode and the medical electrical equipment through the conductive contact and the conductive circuit.

2. The medical catheter with a thin film electrode according to claim 1, wherein:

the catheter is also provided with at least one saccule sleeved on the catheter;

for the portion of the catheter covered by the balloon envelope, the electrodes, conductive contacts and conductive traces are attached to the wall of the balloon.

3. The medical catheter with a thin film electrode according to claim 1, wherein:

the conduit comprises a main pipe and at least one branch pipe;

at least one pipeline cavity is arranged in the conduit;

the branch pipes are communicated with the main pipe by virtue of the pipeline cavity, or more than two branch pipes are communicated by virtue of the pipeline cavity;

the electrode is attached to the pipe wall of at least one of the main pipe and the branch pipe, the conductive contact is also attached to the pipe wall of at least one of the main pipe or the branch pipe, and the conductive circuit is attached to the pipe wall of at least one of the main pipe and the branch pipe along the axial direction, so that the electrode and the conductive contact are electrically connected through the conductive circuit.

4. The medical catheter with a membrane electrode according to claim 3, wherein:

the main pipe and/or the branch pipe are/is also provided with at least one saccule sleeved on the pipe wall;

for the portion of the vessel wall covered by the balloon envelope, the electrodes, conductive contacts and conductive traces are attached to the wall of the balloon envelope.

5. A method for manufacturing a medical catheter provided with a membrane electrode, the method comprising the steps of:

comprises the following steps of (a) carrying out,

preparing insulating ink by using an insulating material as a component;

6. The method for manufacturing a membrane-electrode-equipped medical catheter according to claim 5, wherein:

comprises the following steps of (a) carrying out,

preparing insulating ink by using an insulating material as a component;

sleeving at least one saccule on the catheter;

7. The method for manufacturing a membrane-electrode-equipped medical catheter according to claim 5, wherein:

the method specifically comprises the following steps of,

preparing insulating ink by using an insulating material as a component;

8. The method for manufacturing a membrane-electrode-equipped medical catheter according to claim 7, wherein:

the method specifically comprises the following steps of,

preparing insulating ink by using an insulating material as a component;

sleeving at least one saccule on the main pipe and/or the branch pipe;