CN116212237A - Electrode lead, electro-stimulation system having the same, and method of manufacturing the electrode lead - Google Patents
Electrode lead, electro-stimulation system having the same, and method of manufacturing the electrode lead Download PDFInfo
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- CN116212237A CN116212237A CN202310267286.9A CN202310267286A CN116212237A CN 116212237 A CN116212237 A CN 116212237A CN 202310267286 A CN202310267286 A CN 202310267286A CN 116212237 A CN116212237 A CN 116212237A
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- 238000002513 implantation Methods 0.000 claims abstract description 7
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- 239000002861 polymer material Substances 0.000 claims description 3
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- 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
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/3605—Implantable neurostimulators for stimulating central or peripheral nerve system
- A61N1/3606—Implantable neurostimulators for stimulating central or peripheral nerve system adapted for a particular treatment
- A61N1/36062—Spinal stimulation
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- 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
- A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
- A61N1/0551—Spinal or peripheral nerve electrodes
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- Orthopedic Medicine & Surgery (AREA)
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Abstract
The present disclosure relates to an electrode lead for an electrical stimulation system adapted to be at least partially implanted in a human body for applying electrical stimulation. The electrode lead comprises an elongated body member having a plurality of conductive channels extending along a length thereof, each conductive channel being filled with a conductive fluid; and a plurality of output electrode contacts attached to the outer surface of the body member, wherein each conductive channel extends to a corresponding output electrode contact, and the conductive fluid within each conductive channel is electrically connected to the corresponding output electrode contact to transfer an electrical pulse stimulation signal generated by the control device of the electrical stimulation system to the corresponding output electrode contact. Because the conductive channel is formed on the matrix and the conductive fluid is filled in the conductive channel, the electrode lead is softer, and the operation difficulty and the discomfort of a patient after implantation are reduced; in addition, because the conductive fluid can be filled in the conductive channel rapidly, the preparation time of the electrode lead is saved, the difficulty of the process is reduced, the production efficiency is improved, and the production cost is reduced.
Description
Technical Field
The present disclosure relates to the field of medical devices, and in particular, to an electrode lead for an electrical stimulation system, an electrical stimulation system having the same, and a method of manufacturing the electrode lead.
Background
Spinal cord electrostimulation, a therapy commonly used for neuropathic pain. One end of the stimulating electrode is inserted into the vertebral canal of the human body by utilizing minimally invasive surgery, the other end of the stimulating electrode is connected with the control device, and the control device sends out an electric pulse stimulating signal to stimulate spinal nerves at specific positions, so that pain signals sent to the brain by the nerves at the specific positions are blocked, and the purpose of relieving pain is achieved. The nerve regulating method has the advantages of small trauma, no damage to nerves and the like, and is widely applied.
In the prior art, because the electrode leads are thinner, wires distributed in the electrode leads are denser, and the wires are mutually insulated, the electrode leads have complex production process, lower production efficiency and lower yield, and therefore, the production cost is higher.
It is the finer leads that have more wires distributed therein, and thus the leads are stiffer, which can lead to a number of undesirable consequences, such as greater difficulty in the surgical implantation procedure, and increased risk of accidental injury to the patient. In addition, such therapies often require the implantation of therapeutic devices into the body for extended periods of time, even permanently, and thus comfort and therapeutic effects are equally important to the patient. During patient activity, stiff electrode leads are prone to undesirable contact with surrounding tissue, causing discomfort to the patient.
Disclosure of Invention
The present disclosure aims to solve the problems of stiffness and high cost of electrode leads of conventional electrical stimulation systems.
In a first aspect, the present disclosure provides an electrode lead of an electrical stimulation system adapted to be at least partially implanted in a human body to apply electrical stimulation. The electrode lead includes an elongated body member and a plurality of output electrode contacts. The body member has a plurality of conductive channels extending along a length thereof, each of the conductive channels being filled with a conductive fluid. A plurality of output electrode contacts are attached to the outer surface of the body member, wherein each conductive channel extends to a corresponding output electrode contact, and the conductive fluid within each conductive channel is electrically connected to the corresponding output electrode contact to transfer an electrical pulse generated by the control device of the electrical stimulation system to the corresponding output electrode contact.
In this implementation, by creating a conductive channel in the substrate and filling it with a conductive fluid, an electrical connection of the control device to the electrode contacts is achieved, and the electrical pulses generated by the control device can be transferred to the electrode contacts through the conductive fluid filled in the conductive channel.
According to the structure disclosed by the invention, the conductive fluid can endow the electrode lead with better flexibility, so that the electrode lead is safely implanted into a human body in the operation process, and the operation difficulty is reduced. In addition, due to the better flexibility of the lead, the electrode lead can be well adapted to the bending of the spine to avoid discomfort to the patient when the patient performs normal life activities after operation.
In addition, the conductive fluid can quickly fill the conductive channel, so that the preparation time of the electrode lead is saved, and the difficulty of a processing technology is reduced. In addition, the conductive channel filled with the conductive fluid also improves the effectiveness of electric signal transmission, thereby improving the yield of the electrode lead.
Through the above effects, the electrode lead provided by the present disclosure can reduce or eliminate discomfort to a patient and reduce production costs.
In an exemplary embodiment, the body member is further provided with a plurality of first connection holes extending from the outside to the inside, each first connection hole intersecting a corresponding conductive channel; each output electrode contact is provided with a convex first connecting part, and the first connecting part of each output electrode contact is inserted into a corresponding first connecting hole. That is, each conductive path corresponds to an output electrode contact and vice versa.
According to the electrode lead provided by the disclosure, the first connecting part of the output electrode contact is inserted into one first connecting hole, and the first connecting part can be communicated into the conductive channel for realizing the electric connection of the output electrode contact and the conductive fluid in the conductive channel. Each first connection hole corresponds to one conductive via such that each conductive via is in electrical communication with only a corresponding one of the output electrode contacts. Thus avoiding mixing of the electrical pulse stimulation signals, resulting in mutual interference of the stimulation signals. In addition, the first connecting part of the output electrode contact is fixed in the first connecting hole in a plugging manner, so that the output electrode contact is more firmly connected with the main body piece. On the other hand, due to the fixed mode of grafting, the part of the output electrode contact on the surface of the main body part can be detached from the attachment of the main body part without considering the bending of the main body part, so that the surface area of the output electrode contact can be increased, the coverage range is enlarged, and the stimulation effect is improved.
In an exemplary embodiment, the electrode lead further comprises a plurality of input electrode contacts configured to be electrically coupled with the control device to receive electrical pulses from the control device, wherein each conductive channel extends between a corresponding input electrode contact and a corresponding output electrode contact to electrically connect the corresponding input electrode contact and the corresponding output electrode contact by a conductive fluid therein.
By sequentially connecting the control device, the input electrode contacts, the conductive channels and the output electrode contacts and enabling the input electrode contacts and the output electrode contacts to correspond one by one, the signal received by the input electrode contacts can be uniquely and directionally transmitted to the corresponding output electrode contacts so as to finish the stimulation of the target nerve.
In an exemplary embodiment, the body member is further provided with a plurality of second connection holes extending from the outside to the inside in a radial direction thereof, each second connection hole intersecting a corresponding conductive path; each input electrode contact is provided with a convex second connecting part, and the second connecting part of each input electrode contact is inserted into a corresponding second connecting hole. That is, each conductive path corresponds to one input electrode contact, that is, one input electrode contact corresponds to one output electrode contact.
According to the electrode lead provided by the disclosure, each second connecting hole corresponds to one conductive channel, and the second connecting part of the input electrode contact is inserted into one second connecting hole, so that each conductive channel is only in electrical communication with a corresponding input electrode contact. Mixing of the electrical pulse stimulation signals is thereby further avoided, resulting in mutual interference of the stimulation signals. In addition, the second connecting part of the input electrode contact is fixed in the second connecting hole in a plugging manner, so that the input electrode contact is more firmly connected with the main body piece.
In an exemplary embodiment, the plurality of conductive vias are isolated from each other.
Since by isolating the conductive paths from each other, each conductive path corresponds to only one input electrode contact and one output electrode contact. The electric pulse stimulation signals are prevented from being mixed due to the communication between the conductive channels.
In one possible implementation, the conductive fluid is a conductive gel.
In one possible implementation, the conductive gel includes a matrix and conductive fibers doped therein.
By doping the conductive fibers into the matrix of the conductive gel, the conductive fibers can meet the flexibility requirement of the electrode lead and the conductivity of the conductive gel at the same time, so that a good conductive effect is achieved.
In one possible implementation, the matrix comprises an organic polymeric material and a hydrogel, the organic polymeric material being selected from one or more of a polyester, a polyamide and a polyolefin.
With prolonged implantation of the electrode lead, sealability between the electrode lead body member and the electrode contacts attached thereto may be reduced, thereby resulting in exposure of the interior of the electrode lead to patient body fluids, which is susceptible to contamination. Therefore, the organic polymer material and the hydrogel material are used as the matrix of the conductive gel, so that the damage to human bodies caused by the exposure of the inside of the electrode lead to the body fluid of a patient can be effectively reduced or avoided.
In an exemplary embodiment, the plurality of output electrode contacts includes a plurality of output electrode contact sets spaced apart along the length of the elongated body member, each output electrode contact set having a plurality of electrode contacts spaced apart along the circumference of the elongated body member.
According to the electrode lead provided by the disclosure, in the same electrode contact group, the orientations of different electrode contacts are different, and thus the coverage range of electric pulse stimulation signals generated by different electrodes is also different. Compared with the annular electrode contacts in the traditional electrode lead, in the electrode lead provided by the disclosure, the coverage area of the single electrode contact in each electrode contact set is smaller, so that other parts of spinal nerves can not or less be stimulated while a target spot is accurately covered, and further accurate directional stimulation can be realized. Therefore, the electrode lead provided by the disclosure can reduce side effects caused by redundant stimulation, and is more beneficial to the health of patients.
In a second aspect, the present disclosure also provides an electrical stimulation system adapted to provide electrical stimulation to a human body, the electrical stimulation system comprising: the electrode lead provided in the first aspect is suitable for implantation in a human body; and a control device configured to generate an electrical pulse and to be coupled with the electrode lead in a manner capable of delivering the electrical pulse to the electrode lead.
Due to the adoption of the electrode lead provided in the first aspect, the electric stimulation system provided by the disclosure can accurately cover the target spot and simultaneously can not or less stimulate other parts of spinal nerves, so that accurate directional stimulation can be realized. Therefore, the spinal cord stimulation system provided by the disclosure can reduce side effects caused by redundant stimulation, and is more beneficial to the health of patients.
In a third aspect, the present disclosure also provides a method of manufacturing an electrode lead of an electrical stimulation system, the electrode lead being adapted to be at least partially implanted in a human body to apply electrical stimulation. The manufacturing method comprises the following steps: providing an elongated body member having a plurality of conductive channels extending along a length thereof to provide a receiving space for a conductive medium; each conductive channel is filled with a conductive fluid. Here, the outer surface of the body member has a plurality of electrode contacts attached thereto; each conductive path extends to a corresponding electrode contact and the conductive fluid within each conductive path is electrically connected to a corresponding output electrode contact to transfer electrical pulses generated by the control device of the electrical stimulation system between the electrode contact and the conductive fluid.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings that are required to be used in the embodiments will be briefly described below.
It is to be understood that the following drawings illustrate only certain embodiments of the present disclosure and are therefore not to be considered limiting of its scope, for the person of ordinary skill in the art may admit to other equally relevant drawings without inventive effort.
It should be understood that the same or similar reference numerals are used throughout the drawings to designate the same or similar elements (components or portions thereof).
It should be understood that the figures are merely schematic and that the dimensions and proportions of the elements (components or portions thereof) in the figures are not necessarily accurate.
Fig. 1 is a schematic view of an in vivo structure of an electro-stimulation system according to an embodiment of the present disclosure.
Fig. 2 is a schematic view of the structure of an electrode lead of the electro-stimulation system shown in fig. 1.
Fig. 3 is a schematic radial cross-sectional view of the electrode lead shown in fig. 2.
Fig. 4 is an axial cross-sectional view of the electrode lead shown in fig. 2.
Fig. 5 is a flow chart illustrating a method of manufacturing an electrode lead of an electrical stimulation system according to one embodiment of the disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present disclosure.
Exemplary Electrical stimulation System
Fig. 1 is a schematic diagram of an electrical stimulation system 100 according to one embodiment of the present disclosure. The electro-stimulation system 100 will be described more clearly below in connection with fig. 1.
As shown in fig. 1, in general, the electrical stimulation system 100 includes an electrode lead 110 and a control device 120, and the electrode lead 110 receives an electrical pulse stimulation signal from the control device 120 and transmits the electrical pulse stimulation signal to a target spinal nerve, thereby achieving stimulation of the target spinal nerve.
While in this embodiment, the electrical stimulation system 100 is used to deliver electrical pulse stimulation signals to spinal nerves of a patient, in other embodiments, the electrical stimulation system 100 provided by the present disclosure may also be used to deliver electrical pulse stimulation signals to other parts of a patient's body.
Exemplary electrode leads
Fig. 2 is a schematic structural view of the electrode lead 110.
As shown in fig. 2, the electrode lead 110 includes an elongated body member 112 and a plurality of output electrode contact sets 114 attached to an outer surface of the body member 112 configured to emit an electrical pulse stimulation signal therethrough toward a target spinal nerve.
The plurality of output electrode contact sets 114 are arranged to extend from the end portions to the intermediate portion along the length direction L of the body member 112 and are arranged at intervals. It is understood that the end of the electrode lead 110 travel is the location to be stimulated. It should be noted that although only 8 output electrode contact sets 114 are shown in the embodiment shown in fig. 2, in other embodiments of the present disclosure, the electrode lead 110 may include any other number of output electrode contact sets 114.
Each output electrode contact set 114 in turn includes three output electrode contacts 114a, 114b, 114c spaced apart along the circumference of the body member 112. It should be noted that, although in the embodiment shown in fig. 2, 3 output electrode contacts 114a, 114b, 114c are included in each output electrode contact set 114, in other embodiments, each output electrode contact set 114 may include any other number of output electrode contacts, and the present disclosure is not limited to this number. For example, in some examples, each output electrode contact set 114 may include only one electrode contact.
The output electrode contacts 114a, 114b, 114c have a stimulation surface and an attachment surface, the attachment surface being attached to an outer surface of the body member 112, the stimulation surface facing away from the attachment surface and being adapted to emit an electrical pulse stimulation signal to the target area.
According to the electrode lead 110 provided by the present disclosure, in the same output electrode contact set 114, the orientations of different output electrode contacts 114a, 114b, 114c are different, and thus the coverage of the electrical pulse stimulation signals generated by the different output electrode contacts 114a, 114b, 114c are also different. Compared with the traditional electrode lead with the annular electrode contact, in the electrode lead 110 provided by the disclosure, the coverage area of the single electrode contact is smaller and has more accurate orientation, so that other parts of spinal nerves can not or less be stimulated while the target point is accurately covered, and further accurate directional stimulation can be realized. Therefore, the electrode lead 110 provided by the present disclosure can reduce the side effects caused by excessive stimulation, and is more beneficial to the health of patients.
Fig. 3 is a schematic radial cross-sectional view of the electrode lead 110.
As shown in fig. 3, the electrode lead 110 further has a plurality of conductive channels 116 extending along the length direction L of the body member 112 inside the body member 112, wherein the body member 112 is preferably constructed of a flexible insulating material for isolating the conductive channels 116 from electrical communication with each other.
In this embodiment, each conductive channel 116 is filled with a conductive fluid. For example, the conductive fluid may be a conductive gel capable of flowing; as another example, the conductive fluid may be a conductive liquid to fill the conductive via 116. For example, the conductive channel 116 may be filled with a conductive fluid by way of priming. As another example, the conductive channel 116 may be filled with a conductive fluid by negative pressure pumping. The conductive fluid can be quickly filled into the conductive channel 116, thereby saving the preparation time of the conductive medium matched with the size of the conductive channel 116. Because the conductive fluid can simply and quickly fill the conductive channel 116, the matching difficulty of the conductive medium and the conductive channel 116 is reduced, the difficulty of the production process is further reduced, the production efficiency is improved, and the production cost is reduced.
In the present embodiment, the two ends of the main body 112 are closed, i.e. the conductive channel 116 extends between the two ends of the main body 112 and does not penetrate the main body 112 along the length direction L of the main body 112 to avoid leakage of the conductive fluid.
Further, in this embodiment, good flexibility is imparted to the electrode lead 110 by the conductive medium. So that the electrode lead 110 can well adapt to the curvature of the spine while avoiding discomfort to the patient when the spine is subjected to normal curvature.
The conductive fluid is conductive gel, the conductive gel comprises a matrix and conductive fibers doped in the matrix, and the conductive fibers are doped in the matrix of the conductive gel, so that the flexibility of the electrode lead 110 is met and the conductivity of the conductive gel is met, and a good conductive effect is achieved.
For example, the matrix includes an organic polymer material selected from one or more of polyester, polyamide and polyolefin, and a biocompatible material such as hydrogel. So that the inside of the electrode lead 110 is prevented from being exposed to the body fluid of the patient due to the decrease of sealability, thereby causing damage to the human body.
Fig. 4 is an axial cross-sectional view of the electrode lead 110.
As shown in fig. 4, the body member 112 is further provided with a plurality of first connecting holes 1122 extending from the outside to the inside, each first connecting hole 1122 intersecting a corresponding conductive path 116, the first connecting holes 1122 for receiving output electrode contacts; each output electrode contact is provided with a protruding first connection portion 1142 on the fitting surface, and the first connection portion 1142 of each output electrode contact is inserted into a corresponding first connection hole 1122 and can pass into the conductive channel 116 for electrically connecting with the conductive fluid in the conductive channel 116. Each first connection hole 1122 corresponds to one conductive path 116, that is, each output electrode contact corresponds to one conductive path 116, and vice versa.
In the present embodiment, the conductive paths 116 extend to the end of the main body 112 to the first connecting holes 1122 and communicate with the first connecting holes 1122, and in other embodiments, the positional relationship between the first connecting holes 1122 and the corresponding conductive paths 116 may be arbitrary while ensuring that each first connecting hole 1122 corresponds to one conductive path 116.
The present disclosure provides electrode leads 110 in which each conductive pathway 116 is in electrical communication with only a respective one of the output electrode contacts 114. Thus avoiding mixing of the electrical pulse stimulation signals, resulting in mutual interference of the stimulation signals. In addition, the first connection portion 1142 of the output electrode contact is fixed in the first connection hole 1122 in a plugging manner, so that the output electrode contact is more firmly connected to the main body 112. On the other hand, due to the plugging fixing manner, the part of the output electrode contact on the surface of the main body member 112 can be removed from the attachment with the main body member 112 without considering the bending of the main body member 112, so that the surface area of the output electrode contact can be increased, the coverage area can be increased, and the stimulation effect can be improved.
Referring again to fig. 2, there are a plurality of input electrode contact sets 118 at the end of the body member 112 opposite the end at which the plurality of output electrode contact sets 114 are located. The plurality of input electrode contact sets 118 are configured to be electrically coupled to the control device 120 to receive electrical pulses from the control device 120, the input electrode contact sets 118 comprising a plurality of input electrode contacts 118a, 118b. The number of sets of input electrode contacts and the number of input electrode contacts per set corresponds to the output electrode contacts in the above embodiment, i.e. one output electrode contact per input electrode contact. Each conductive channel 116 extends between a corresponding input electrode contact and a corresponding output electrode contact such that the conductive fluid electrically connects the corresponding input electrode contact and the corresponding output electrode contact.
By implementing the sequential connection of the control device 120, the input electrode contacts, the conductive channels 116, and the output electrode contacts, and having the input electrode contacts and the output electrode contacts in one-to-one correspondence, it is achieved that signals received by the input electrode contacts can be uniquely and directionally transmitted to the corresponding output electrode contacts to complete stimulation of the target nerve.
Referring again to fig. 4, a plurality of second connection holes 1124 are provided at an end of the body member 112 opposite to the end where the first connection holes 1122 are provided, and the plurality of second connection holes 1124 are arranged and are symmetrically arranged with respect to the first connection holes 1122 for receiving input electrode contacts, similar to the first connection holes 1122. Simply because there is no need for a stimulus range and bending, the second connection holes 1124 may be arranged more densely than the first connection holes 1122 so that input electrode contacts may be denser, and the size of the input electrode contacts may be smaller than that of the output electrode contacts, so that the size of one end of the electrode lead 110 for receiving the electric pulse stimulus signal from the control device 120 is reduced, thereby reducing the size of the control device 120. As such, for situations where it is desirable to implant the control device 120 into a patient, the spinal cord stimulation system 100 provided by the present disclosure is beneficial to reducing trauma to the patient and reducing the difficulty of surgery during the implantation process.
Referring again to fig. 1, the control device 120 receives one end of the input electrode contact of the electrode lead 110, is configured to generate an electrical pulse, and is coupled to the electrode lead 110 in a manner that enables delivery of the electrical pulse to the electrode lead 110. In this disclosure, the electric pulse may refer to a current pulse or a voltage pulse. As one example, the control device 120 may be directly electrically connected with the electrode lead 110.
In this embodiment, the control device 120 may be an Implantable Pulse Generator (IPG) that is easy for the patient to wear for a long period of time.
Exemplary electrode lead manufacturing methods
Fig. 5 is a flowchart illustrating a method S100 for manufacturing an electrode lead of an electrical stimulation system according to an embodiment of the disclosure. As shown in fig. 5, the manufacturing method S100 may include step S110 and step S120. For example, the manufacturing method S100 may be used to manufacture the electrode lead 110 in the above-described embodiment.
Step S110: an elongated body member 112 is provided.
The body member 112 has a plurality of conductive channels 116 extending along its length for providing a receiving space for a conductive medium. A plurality of first connection holes 1122 extending from the outside to the inside are provided in the body member 112, and each first connection hole 1122 intersects a corresponding conductive path 116. The body member 112 having the conductive vias 116 and the first connection holes 1122 may be formed by molding.
Step S120: each conductive via 116 is filled with a conductive fluid.
The conductive fluid may be poured into the conductive pathway 116 in communication therewith, for example, through an injection molding tool from one connection aperture (e.g., first connection aperture 1122), and simultaneously applied to the conductive pathway 116 at another connection aperture (e.g., second connection aperture 1124) in communication with the conductive pathway 116 using a negative pressure suction device, such that the conductive fluid injection is rapidly performed.
It should be understood that the term "include" and variations thereof as used in this disclosure are intended to be open-ended, i.e., including, but not limited to. The term "one embodiment" means "at least one embodiment," and the term "another embodiment" means "at least one other embodiment.
The specific features (elements) described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the disclosure does not further describe various possible combinations.
Those of ordinary skill in the art will appreciate that the elements or modules of the examples described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or as a combination of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the several embodiments provided in this application, it should be understood that the disclosed systems and apparatuses may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, and the division of the units or modules is merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or modules may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
In addition, each functional unit or module in the embodiments of the present application may be integrated in one processing unit or module, or each unit or module may exist alone physically, or two or more units or modules may be integrated in one unit or module.
The foregoing is merely a specific embodiment of the disclosure, but the protection scope of the disclosure is not limited thereto, and any person skilled in the art will recognize that changes and substitutions are within the technical scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (11)
1. An electrode lead of an electrical stimulation system, the electrode lead being adapted to be at least partially implanted in a human body for applying electrical stimulation, the electrode lead comprising:
an elongated body member having a plurality of conductive channels extending along a length thereof, each conductive channel being filled with a conductive fluid; and
a plurality of output electrode contacts attached to an outer surface of the body member, wherein each conductive channel extends to a corresponding output electrode contact, and a conductive fluid within each conductive channel is electrically connected to the corresponding output electrode contact to transfer an electrical pulse stimulation signal generated by a control device of the electrical stimulation system to the corresponding output electrode contact.
2. The electrode lead according to claim 1, wherein the body member is further provided with a plurality of first connection holes extending from the outside to the inside, each first connection hole intersecting a corresponding conductive path; each output electrode contact is provided with a convex first connecting part, and the first connecting part of each output electrode contact is inserted into a corresponding first connecting hole.
3. The electrode lead of claim 1, further comprising a plurality of input electrode contacts configured to be electrically coupled with the control device to receive an electrical pulse stimulation signal from the control device, wherein each conductive channel extends between a corresponding input electrode contact and a corresponding output electrode contact to electrically connect the corresponding input electrode contact and the corresponding output electrode contact by a conductive fluid therein.
4. The electrode lead according to claim 3, wherein the body member is further provided with a plurality of second connection holes extending from the outside to the inside in a radial direction thereof, each second connection hole intersecting a corresponding conductive path; each input electrode contact is provided with a convex second connecting part, and the second connecting part of each input electrode contact is inserted into a corresponding second connecting hole.
5. The electrode lead of any of claims 1-4, wherein the plurality of conductive channels are isolated from each other.
6. The electrode lead of any of claims 1-4, wherein the electrically conductive fluid is an electrically conductive gel.
7. The electrode lead of claim 6, wherein the conductive gel comprises a matrix and conductive fibers doped therein.
8. The electrode lead according to claim 7, wherein the matrix comprises an organic polymer material selected from one or more of polyester, polyamide and polyolefin and hydrogel.
9. The electrode lead of any of claims 1-4, wherein the plurality of output electrode contacts comprises a plurality of output electrode contact sets spaced apart along the length of the elongate body member, each output electrode contact set having a plurality of electrode contacts spaced apart along the circumference of the elongate body member.
10. An electrical stimulation system adapted to provide electrical stimulation to a human body, comprising:
the electrode lead of any one of claims 1 to 9, adapted for implantation into the human body; and
a control device configured to generate and couple with the electrode lead in a manner capable of delivering the electrical pulse stimulation signal to the electrode lead.
11. A method of manufacturing an electrode lead for an electrical stimulation system, the electrode lead being adapted to be at least partially implanted in a human body for applying electrical stimulation, the method comprising:
providing an elongated body member having a plurality of conductive channels extending along a length thereof disposed therein; and
filling each conductive channel with a conductive fluid, wherein a plurality of electrode contacts are attached to an outer surface of the body member; each conductive channel extends to a corresponding electrode contact, and conductive fluid in each conductive channel is electrically connected with the corresponding output electrode contact and is used for transmitting an electric pulse stimulation signal generated by a control device of the electric stimulation system between the electrode contact and the conductive fluid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310267286.9A CN116212237A (en) | 2023-03-15 | 2023-03-15 | Electrode lead, electro-stimulation system having the same, and method of manufacturing the electrode lead |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310267286.9A CN116212237A (en) | 2023-03-15 | 2023-03-15 | Electrode lead, electro-stimulation system having the same, and method of manufacturing the electrode lead |
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| CN116212237A true CN116212237A (en) | 2023-06-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117679634A (en) * | 2024-01-31 | 2024-03-12 | 苏州新云医疗设备有限公司 | Implanted electrode and electrical stimulation system |
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