IMPLANTABLE HYBRID LEAD AND METHOD OF MANUFACTURING THE SAME

Abstract

In an implantable hybrid lead and a method of manufacturing the implantable hybrid lead, the implantable hybrid lead includes a conduit, a line electrode and a plurality of electrode terminals. The conduit has a fine channel through which a medicine is injected. The line electrode is inserted to and is combined with an outside of the conduit, and applies electrical simulation to a selected portion of a living body. A plurality of electrode terminals is disposed at an end of the conduit by a predetermined distance.

Claims

1. An implantable hybrid lead comprising: a conduit having a fine channel through which a medicine is injected; a line electrode inserted to and combined with an outside of the conduit, and applying electrical simulation to a selected portion of a living body; and a plurality of electrode terminals disposed at an end of the conduit by a predetermined distance.

2. The implantable hybrid lead of claim 1, wherein the line electrode is a thin film electrode or thin film multi electrodes array.

3. The implantable hybrid lead of claim 1, wherein the line electrode is coiled around an outer surface of the conduit to be connected with the conduit, by a predetermined distance.

4. A method of manufacturing an implantable hybrid lead, the method comprising: manufacturing a thin film electrode by MEMS; manufacturing a conduit using a liquid biocompatible polymer, the conduit having a fine channel through which a medicine is injected; and inserting and combining the thin film electrode with an outside of the conduit to be packaged.

5. A method of manufacturing an implantable hybrid lead, the method comprising: manufacturing thin film multi electrodes array by MEMS; manufacturing a conduit using a liquid biocompatible polymer, the conduit having a fine channel through which a medicine is injected; and inserting and combining the thin film multi electrodes array with an outside of the conduit to be packaged.

6. The method of one of claims 4 and 5, the method further comprising: inserting the conduit having the fine channel to which the thin film electrode or the thin film multi electrodes array is attached, into a mold, and injecting the liquid biocompatible polymer for molding.

7. The method of one of claims 4 and 5, wherein the thin film electrode or the thin film multi electrodes array is coiled around an outer surface of the conduit to be connected with the conduit, by a predetermined distance.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIGS. 1A to 1D are perspective views illustrating conventional implantable leads;

[0019] FIGS. 2A to 2C are side views illustrating an implantable hybrid lead according to an example embodiment of the present invention; and

[0020] FIG. 3 is a flow chart illustrating a method of manufacturing the implantable hybrid lead of FIGS. 2A to 2C.

REFERENCE NUMERALS

[0021] 110: thin film electrode (line electrode) [0022] 120: conduit having a fine channel [0023] 130: electrode terminal

DETAILED DESCRIPTION

[0024] The invention is described more fully hereinafter with Reference to the accompanying drawings, in which embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0025] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0026] As used herein, the singular forms a, an and the are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms comprises and/or comprising, when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

[0027] Hereinafter, the embodiments of the present invention will be described in detail with reference to the accompanied drawings. In addition, the same reference numerals will be used to refer to the same or like parts and any further repetitive explanation concerning the above elements will be omitted.

[0028] FIGS. 2A to 2C are side views illustrating an implantable hybrid lead according to an example embodiment of the present invention.

[0029] As illustrated in FIGS. 2A to 2C, the implantable hybrid lead according to the present example embodiment includes a conduit 120, a line electrode 110 and a plurality of electrode terminals 130. The conduit 120 has a fine channel through which a medicine is injected. The line electrode 110 is inserted to and is combined with an outside of the conduit 120, and applies electrical simulation to a selected portion of a living body. The electrode terminals 130 are disposed at an end of the conduit by a predetermined distance.

[0030] Here, the line electrode 110 is a thin film electrode or thin film multi electrodes array.

[0031] In addition, the line electrode 110 is coiled around an outer surface of the conduit 120 to be connected with the conduit 120, by a predetermined distance.

[0032] The conduit 120 is a flexible polydimethylsiloxane (PDMS) conduit.

[0033] The implantable hybrid lead may be used to be inserted into a human body in a short term or may be implanted into the human body for a long term. A thickness of the implantable hybrid lead may be between about 600 m and about 2,000 m, but not limited thereto.

[0034] In addition, the implantable hybrid lead is flexible so as to be inserted or positioned into an inside of a curved human body, and is biocompatible to be nontoxic with a long term usage.

[0035] A method of manufacturing the implantable hybrid lead is explained below.

[0036] FIG. 3 is a flow chart illustrating a method of manufacturing the implantable hybrid lead of FIGS. 2A to 2C.

[0037] Referring FIG. 3, in the method of manufacturing the implantable hybrid, a thin film electrode 110 or thin film multi electrodes array is manufactured by MEMS manufacturing processes (step S110). Here, the thin film electrode or the thin film multi electrodes array is formed on a substrate and then are removed from the substrate. For example, a UV photo-sensitive material such as polyimide having relatively high heat-resistance, chemical-resistance and biocompatibility is spin-coated on the substrate, to be formed as a bottom surface. Then, a metal thin film is formed on the bottom surface by chemical vapor deposition or physical vapor deposition, and is partially etched to form a predetermined pattern. Then, the UV photo-sensitive material is spin-coated on the predetermined pattern again, to be formed as an upper surface. Since the MEMS manufacturing processes are prior arts and further explanation on the processes are omitted. Here, the substrate may include a silicon wafer, a glass substrate, a quartz substrate, etc.

[0038] Then, the conduit 120 is manufactured using a liquid biocompatible polymer, and the conduit 120 has a fine channel through which a medicine is injected (step S120). Here, the conduit 120 may include the polydimethylsiloxane (PDMS) and is flexible. For example, a liquid polydimethylsiloxane is injected into a plastic or metal mold, and a heat is applied to the plastic or metal mold, so that the flexible conduit 120 may be manufactured by polymerization. Here, the thickness of the conduit 120 may be controlled by changing the thickness of the injected liquid polydimethylsiloxane.

[0039] Then, the thin film electrode 110 or the thin film multi electrodes array is inserted and combined with an outside of the conduit 120 to be packaged into together (step S130). Here, a surface of the outside of the conduit 120 is treated by an oxygen plasma treatment to increase a surface energy and then the package may be performed, but not limited thereto.

[0040] Then, the conduit 120 having the fine channel to which the thin film electrode 110 or the thin film multi electrodes array is attached, is inserted into a mold, and the liquid biocompatible polymer is injected for molding (step S140). For example, for manufacturing the molding, the PDMS conduit 120 to which the thin film electrode 110 or the thin film multi electrodes array is attached, is inserted into the metal or the plastic mold, and the liquid PDMS is injected.

[0041] Here, the thin film electrode 110 or the thin film multi electrodes array is coiled around the outer surface of the conduit 120 to be connected with the conduit 110, by a predetermined distance. For example, the thin film electrode 110 is coiled around the translucent PDMS conduit 120 like a ribbon, and is packaged by the molding. Here, the thin film electrode 110 is connected to the electrode terminal 130 of the end of the conduit 120.

[0042] In the present invention, the conduit, the PDMS conduit and the conduit having the fine channel are substantially same with each other.

[0043] Although the exemplary embodiments of the present invention have been described, it is understood that the present invention should not be limited to these exemplary embodiments but various changes and modifications can be made by one ordinary skilled in the art within the spirit and scope of the present invention as hereinafter claimed.