WO2021258711A1

WO2021258711A1 - Isolating ring, composite contact, and electrode and manufacturing method thereof

Info

Publication number: WO2021258711A1
Application number: PCT/CN2020/141956
Authority: WO
Inventors: 韩大计
Original assignee: 北京品驰医疗设备有限公司
Priority date: 2020-06-24
Filing date: 2020-12-31
Publication date: 2021-12-30
Also published as: CN111729193A; CN111729193B

Abstract

The present invention provides an isolating ring, a composite contact, and an electrode and a manufacturing method therefor. The isolating ring comprises: a ring body (31) that is made of an insulating material, has a hollow inner cavity (30), and is suitable for sleeving; and at least one mounting station (32) formed on the ring body (31), and suitable for mounting a sheet-shaped contact (2). Since the isolating ring in the present invention is made of an insulation material and has a hollow inner cavity, and after being sleeved on a stimulation section of the electrode, the isolating ring can not only position and fix the sheet-shaped contact, but also achieve insulation and barrier effects. The isolating ring in the present invention can assist in positioning and fixing the sheet-shaped contact, and can reduce the assembling difficulty of the sheet-shaped contact on the stimulation section, thereby improving the production efficiency.

Description

Manufacturing method of isolation ring, composite contact, electrode and electrode

Technical field

The invention relates to the technical field of implantable medical instruments, in particular to a method for manufacturing an isolation ring, composite contacts, electrodes and electrodes used in an implantable nerve electrical stimulation system.

Background technique

Deep brain stimulation (DBS) therapy is a treatment technique in which electrodes are implanted into a specific nucleus region in the deep part of the human brain through the use of three-dimensional precise positioning technology. Under the control of a pulse generator, electrical pulses are emitted through the electrodes to stimulate the target. The excitability of the nucleus can be changed by giving certain stimulation parameters to the pulse generator through external programming, and the nerve function can be adjusted. The pulse generator can adjust stimulation parameters such as frequency, pulse width, and voltage to maximize the neuromodulation function of DBS. With the development of neurostimulation technology, more and more symptoms have been proven to be effective using DBS, such as Parkinson’s disease, essential tremor or Parkinson’s disease tremor, dystonia, epilepsy, and obsessive-compulsive disorder. The symptoms of mental illness have been significantly improved after the use of neurostimulation therapy.

The main stimulation parameters adjusted by traditional DBS products are frequency, pulse width and voltage. In actual clinical practice, there is also a certain demand for the direction of electrode stimulation, because not only different areas of the brain have different stimulation effects, but also the corresponding functional areas in different directions have different effects. The stimulation end of the traditional electrode is a ring-shaped contact, and the direction of the stimulation cannot be controlled. It is difficult to achieve precise stimulation and cannot be optimally adjusted.

Chinese Patent Document CN105246542A discloses a segmented electrode guide formed of a prepared electrode with recesses or perforations and a manufacturing method thereof. The prepared electrode disclosed therein includes a single segmented electrode contact joined together by a connecting material. The segmented electrode contacts are formed into a group of multiple, and surround the circumference of the electrode guide, which can control the direction of stimulation. However, since the electrode contacts are formed by removing the connecting material by grinding or other methods, the process is difficult, the production efficiency is low, the yield is low, and the cost is high.

Summary of the invention

Therefore, the technical problem to be solved by the present invention is to overcome the technical disadvantages of high technical difficulty, low production efficiency, low yield, and high cost caused by the preparation of segmented electrode contacts by grinding and preparing electrodes in the prior art, thereby providing a An isolation ring that can reduce the difficulty of manufacturing segmented electrodes.

The invention also provides a composite contact used for positioning and installing the chip contact.

The present invention also provides an electrode with the above-mentioned composite contact and a manufacturing method of the electrode.

To this end, the present invention provides an isolation ring, including:

The ring body is made of insulating material and has a hollow inner cavity, which is suitable for sheathing;

At least one installation position is arranged on the ring body and is suitable for installing a sheet-shaped contact.

As a preferred solution, the ring body includes:

The first ring body is arranged in a ring shape and is located at one end of the ring body;

The second ring body is arranged in a ring shape and is located at the other end of the ring body;

A connecting block connects the first ring body and the second ring body and forms the installation position.

As a preferred solution, the number of connecting blocks is 1, 2, 3, 4, 5, 6, 7, or 8, so as to form 1, 2, 3, and 3 on the ring body. One, four, five, six, seven or eight installation positions.

The present invention also provides a composite contact, including:

Flake contacts

The isolation ring, the isolation ring is the isolation ring described in any one of the above, and the sheet contact is installed on the installation position.

The present invention also provides an electrode including a stimulation section, characterized in that the stimulation section includes:

A mandrel, a plurality of through grooves extending along the axial direction of the mandrel are provided on the outer wall;

There are a number of wires, which pass through the inside of the through slot;

Ring contacts and/or composite contacts are sleeved on the outer side of the mandrel, and the composite contacts are the aforementioned composite contacts;

One end of the wire is electrically connected with the ring contact and/or the sheet contact.

As a preferred solution, the wires are electrically connected to the ring contacts or the sheet contacts in the composite contacts in a one-to-one correspondence; the wires and the through slots are installed in a one-to-one correspondence.

As a preferred solution, at least one of the wires is a marking wire.

As a preferred solution, a through cavity is provided in the middle of the mandrel, and the through cavity extends along the axial direction of the mandrel, has two ends open, and does not communicate with the through groove.

The present invention also provides an electrode manufactured on the basis of a multi-lumen tube, including:

A multi-lumen tube is provided with a plurality of channels extending axially along the multi-lumen tube and open at both ends; the multi-lumen tube includes a first section, a second section and a third section, the first section and the The third section is located at both ends of the second section, and the outer layer of the first section and the third section of the multi-lumen tube is removed, exposing the channel, and making the channel form a channel. groove;

The wire is arranged inside the channel and/or the through slot;

At least one connecting contact and at least zero insulating rings are sleeved on the first section; the connecting contact is electrically connected to one end of the wire to form a connecting section;

At least zero ring contacts and at least one composite contact are sleeved on the third section, and a plug is installed at the end; the ring contact and/or the sheet contact in the composite contact and the The other end of the wire is electrically connected to form a stimulation section; the composite contact is the composite contact described in one of the above technical solutions.

As a preferred solution, at least two of the ring contacts are provided on the third section, and when the two ring contacts are arranged adjacent to each other, there is also a gap between the two adjacent ring contacts. The sleeve is equipped with an insulating ring.

As a preferred solution, the connection contacts sleeved on the first section and the ring contacts or sheet contacts sleeved on the third section are electrically connected in a one-to-one correspondence by the wires.

As a preferred solution, the wires are installed in the channel and/or the through slot in a one-to-one correspondence.

As a preferred solution, at least one of the wires is a marking wire.

As a preferred solution, a through cavity is provided in the middle of the multi-lumen tube, and the through cavity extends axially along the multi-lumen tube, has two ends open, and does not communicate with the channel.

As a preferred solution, a developing ring is provided on the outer wall of the second section.

The present invention also provides a method for manufacturing an electrode of one of the above technical solutions, which includes the following steps:

A certain length is selected from one end of the multi-lumen tube as the first section, a certain length is selected from the other end of the multi-lumen tube as the third section, and the part located between the first section and the third section is the second section;

Removing the outer layers of the first section and the third section, so that the part of the internal channel of the multi-lumen tube located in the first section and the third section is exposed to form a through groove;

One end of the wire is welded to the connecting contact, and the connecting contact and the insulating ring are sleeved on the first section; the wire is inserted through the through slot in the first section, and passes through the through slot in the second section. After the passage, pass through the through slot located in the third section;

Weld the other end of the wire with the sheet contact on the ring contact or the composite contact, and then bend the third section through the ring contact or the composite contact; make the ring contact Or the composite contact is sleeved on the third section; or, the other end of the wire is welded to the ring contact or the sheet contact; the third section is bent and passed through the ring contact, Installing the ring contact or the chip contact on the third section; installing an isolation ring and an insulating ring, and installing the chip contact on the isolation ring;

Or include the following steps,

Weld one end of the wire with the sheet-shaped contact on the ring contact or the composite contact, and then sleeve the ring contact or the composite contact on the third section; Pass through the three-section through slot, pass through the channel in the second section and then pass through the through slot in the first section; or, weld one end of the wire to the ring contact or the sheet contact; The ring contact is sleeved on the third section, so that the ring contact or the chip contact is installed on the third section; the isolation ring and the insulating ring are installed, and the chip contact Installed on the isolation ring;

The other end of the wire is welded to the connecting contact, and the first section is bent and passed through the connecting contact and the insulating ring, so that the connecting contact and the insulating ring are sleeved on the first section.

As a preferred solution, at least two of the ring contacts are provided on the third section, and when the two ring contacts are arranged adjacent to each other, it also includes two adjacent ring contacts. The step of sheathing an insulating ring in the middle.

As a preferred solution, the method further includes the step of connecting the composite contact or the insulating ring and the multi-lumen tube as a whole by heat fusion.

As a preferred solution, it also includes between the connecting contact and the multi-lumen tube, or between the ring contact and the multi-lumen tube, or between the composite contact and the multi-lumen tube. The step of injecting glue or implanting fillers between the cavities for filling.

The technical scheme provided by the present invention has the following advantages:

1. The isolating ring of the present invention is provided with at least one installation position on the ring body for installing sheet contacts; the isolating ring itself is made of insulating material, has a hollow inner cavity, and is sleeved on the stimulation section of the electrode, not only It can provide positioning and fixation for sheet contacts, and can also play a role of insulation and barrier. Using the isolation ring of the present invention can assist the positioning and fixing of the sheet-like contacts, reduce the difficulty of assembling the sheet-like contacts on the stimulation section, and improve the production efficiency.

2. The isolation ring of the present invention includes a first ring body, a second ring body and a connecting block. The connecting block is used to connect the first ring body and the second ring body to form an installation position; the overall structure is simple, consisting of the first ring body and the second ring body. The elastic variability of the installation position formed by the second ring body and the connecting block facilitates the installation of the chip contacts.

3. In the insulating ring of the present invention, 1-8 connection blocks are provided, so that 1-8 installation positions are formed on the ring body for installing sheet contacts.

4. The present invention also provides a composite contact, which specifically installs the chip contact on the installation position of the isolation ring; the composite contact of the present invention first fixes the chip contact on the isolation ring, and then connects it to the isolation ring. After the wire is welded, it is installed to the stimulation section of the electrode, so that the positioning and fixing of the sheet-shaped contact are first completed, which facilitates the subsequent assembly, and thus can improve the production efficiency.

5. The present invention also provides an electrode including a stimulation section. After the sheet-shaped contact is installed on the isolation ring, it is then sheathed on the mandrel and electrically connected to the lead. The electrode structure of the present invention can first touch the sheet-shaped contact. The points are positioned and fixed, which can improve production efficiency.

6. The electrode of the present invention, the wire and the ring contact, or the chip contact in the composite contact, are electrically connected in a one-to-one correspondence, so that the ring contact or the chip contact in the composite contact can be mutually exclusive. The stimulus of conflict. The wires are installed in the corresponding slots in the corresponding positions to avoid mutual interference; in addition, at least one of the wires can be set as a marking wire, for example, the color of the marking wire is set to red, so as to serve as an orientation reminder; After the entire electrode is made, the location of each piece of contact has been clarified. When the electrode is implanted into the human body, according to the orientation of this marking wire, the medical staff can know the direction of each piece of contact. The orientation of the marking wire can be adjusted to adjust the electrode orientation, and then adjust the sheet contact to the target stimulation position.

7. In the electrode of the present invention, a through cavity is provided in the middle of the mandrel, the through cavity extends along the axial direction of the mandrel, and the two ends are open and do not communicate with the through groove; due to the soft material of the mandrel and poor rigidity, after the electrode is made, A guide wire (such as stainless steel wire, tungsten wire, etc.) can be inserted into the through cavity to enhance the hardness and facilitate subsequent implantation operations.

8. The electrode of the present invention is made on the basis of a multi-lumen tube. The multi-lumen tube is divided into three sections as a whole. The outer part of the first section is sheathed with a connecting contact and an insulating ring to form a connecting section; Ring contacts and composite contacts are sleeved on the outside, a plug is installed at the end to form a stimulating section, and the second section connects the connecting section and the stimulating section to form an extended section. The electrode of the present invention can be assembled with sheet-shaped contacts by directly sheathing composite contacts on the outside of the third section, which has the advantage of high production efficiency.

9. The present invention also provides a method for manufacturing an electrode. First, select the first section and the third section on the multi-lumen tube, remove the outer layer, and then install the connecting contact and the isolation ring, or the ring contact and the composite contact. Points, respectively forming a connecting section and a stimulating section; the manufacturing method of the present invention has high electrode manufacturing efficiency.

Description of the drawings

In order to more clearly illustrate the technical solutions in the prior art or specific embodiments of the present invention, the following briefly introduces the drawings used in the description of the prior art or specific embodiments.

Fig. 1 is a perspective view of the spacer ring of the present invention.

Figure 2 is a perspective view of the composite contact of the present invention.

Fig. 3 is a schematic diagram of the overall structure of the electrode of the present invention.

Fig. 4 is a cross-sectional view of the multi-lumen tube in Fig. 3.

Fig. 5 is a structural diagram of the second section of the multi-lumen tube and the third section after the outer layer is removed.

Fig. 6 is a cross-sectional view of the electrode in Fig. 3.

Fig. 7 is a perspective view of Fig. 6 with the multi-lumen tube removed.

Fig. 8 is an enlarged schematic diagram of the structure of the connecting section in Fig. 3.

Fig. 9 is a perspective view of Fig. 8 with the multi-lumen tube removed.

Fig. 10 is a schematic diagram of the structure of the marking guide wire being inserted and installed in a multi-lumen tube.

Fig. 11 is a cross-sectional view of an electrode stimulation section with a composite contact including three sheet-shaped contacts and a marked wire.

Fig. 12 is a cross-sectional view of an electrode stimulation section with a composite contact including four sheet-shaped contacts and a marked wire.

Figure 13 is a cross-sectional view of an electrode stimulation section with composite contacts including three sheet contacts and two labeled wires.

Figure 14 is a cross-section of an electrode stimulation section with composite contacts including two sheet contacts and two labeled wires.

Reference signs: 1. Ring contact; 2. Sheet contact; 8. Connecting contact; 3. Isolating ring; 30, Hollow cavity; 31, Ring body; 32, Mounting position; 33, First ring body 34. Second ring body; 35. Connecting block; 4. Electrode; 41. Connecting section; 42. Stimulating section; 43. Extension section; 5. Composite contact; 6. Lead; 7. Multi-lumen tube; 70. Passage; 71, first section; 72, second section; 73, third section; 74, through groove; 75, through cavity; 76, mandrel; 81, insulating ring; 82, developing ring; 92, plug.

detailed description

The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

This embodiment provides an isolation ring, as shown in FIG. 1, comprising: a ring body 31, an insulating material, with a hollow inner cavity 30, suitable for sleeves; three installation positions 32, which are arranged on the ring body 31 Above, suitable for installing chip contacts 2.

For the isolation ring 3, the number of installation positions 32 set on it can be adjusted according to actual needs, generally 1-8. The purpose is to fix the chip contacts 2 at multiple different positions, and then control the pulse The stimulus direction of the stimulus signal sent by the generator has the best therapeutic effect.

As shown in Fig. 6, the isolating ring 3 of this embodiment is made of insulating material, transparent and elastic, and can be made of polyurethane material. It has a hollow cavity and can be sleeved on the stimulation section 42 of the electrode 4. The sheet contact 2 provides positioning and fixation, and can also function as an insulation barrier, and can replace the insulating ring in the prior art. In the production of the electrode 4, the use of the isolating ring of the present invention can assist the positioning and fixing of the sheet-like contacts 2, reduce the difficulty of assembling the sheet-like contacts 2, and improve the production efficiency.

Specifically, the ring body 31 includes: a first ring body 33 arranged in a ring shape and located at one end of the ring body 31; a second ring body 34 arranged in a ring shape and located at the other end of the ring body 31; a connecting block 35 , The first ring body 33 and the second ring body 34 are connected, and the installation position 32 is formed. The isolating ring of the present invention has a simple overall structure, and the installation position formed by the first ring body 33, the second ring body 34 and the connecting block 35 is elastically deformable, which facilitates the installation of the sheet-shaped contacts.

As shown in Fig. 1, along the axial direction of the hollow cavity 30, the length of the first ring body 33 is 1/2 of the length of the second ring body 34. Also referring to Fig. 6, it is assumed that the length of the electrode 4 is A ring electrode 1, a composite electrode 5, a composite electrode 5, and a ring electrode 1 are sequentially arranged on the stimulation section 42. At this time, the first ring body 33 of the two composite electrodes 5 is relatively close, and the second ring body 34 is arranged on the ring electrode 1. Between the composite electrode 5, the composite electrode 5 and the ring electrode 1, the insulation barrier can be achieved at three positions and the same distance, and the use of an insulating ring can be avoided (material and process can be saved).

As a modified design solution, the length of the first ring body 33 can be the same as the length of the second ring body 34, or the length of the first ring body 33 can be twice the length of the second ring body 34, which plays a role Similar to the above, it is convenient to realize the insulation barrier distance and avoid the use of insulating rings. The length of the first ring body 33 and the second ring body 34 is mainly affected by the axial distance of the contacts during the design. When the two isolation rings are adjacent, the length of the first ring body 33 and the second ring body 34 can be produced according to The process can be combined to ensure the spacing.

In this embodiment, there are three connecting blocks 35, so that three installation positions 32 are formed on the ring body 31.

As a modified design solution, the number of connecting blocks 35 may also be 1, 2, 4, 5, 6, 7, or 8, so as to form 1, 2, 4, 4 on the ring body 31. One, five, six, seven or eight installation positions 32.

Example 2

This embodiment provides a composite contact 5, as shown in FIG. 2, comprising: a sheet-shaped contact 2; an isolating ring 3, the isolating ring 3 is the isolating ring 3 described in Embodiment 1, the sheet-shaped The contact 2 is installed on the installation position 32.

First install the chip contacts on the isolation ring 3 to form composite contacts 5, and then perform the subsequent welding or assembly process, no need to consider the positioning and fixing of the chip contacts 2, so the subsequent assembly procedures are simple. efficient.

Example 3

This embodiment provides an electrode, as shown in FIGS. 3 and 5-7, which includes a stimulation section 42 which includes a mandrel 76, and a plurality of axially extending axially along the mandrel 76 are provided on the outer wall. The through groove 74; the wire 6, which has a number of wires, passes through the inside of the through groove 74; the outer side of the mandrel 76 is sleeved with a ring contact 1 and a composite contact 5, and the composite contact 5 is embodiment 2 The composite contact 5 described in the; one end of the wire 6 is electrically connected to the ring contact 1 and the sheet contact 2.

In this embodiment, the mandrel 76 is actually processed by the multi-lumen tube 7, specifically, the outer layer of a section of the multi-lumen tube 7 is removed, and the channel 70 originally located inside the multi-lumen tube 7 is exposed to form a through groove 74.

The electrode of this embodiment directly adopts the structure of the composite contact 5 in embodiment 2 at the position of the stimulation section 42. That is, the structure of the electrode of this embodiment directly assembles the composite contact 5 to the mandrel 76 during assembly. However, since the chip contact 2 has been positioned and installed on the composite contact 5 first, after the composite contact 5 is installed on the mandrel 76, the chip contact 2 is installed at the same time, and the assembly efficiency is high.

The wires 6 are electrically connected to the sheet contacts 2 in the ring contact 1 or the composite contact 5 in a one-to-one correspondence, so as to provide mutual communication for the ring contacts or the sheet contacts in the composite contact. Non-conflicting stimulus signals. The wires 6 and the through slots 74 are installed in a one-to-one correspondence to avoid mutual interference.

In addition, at least one of the wires 6 is a marking wire. For example, the color of the marking wire is set to red to serve as an orientation reminder; after the entire electrode 4 is made, the location of each sheet contact 2 has been clarified. 4 When implanted in the human body, according to the orientation indication of the marking wire, the medical staff can know the orientation of each sheet contact 2 and the medical staff can adjust the orientation of the electrode 4 according to the orientation indication of the marking wire, and then adjust the piece The shaped contact 2 faces the target stimulation position, which improves the efficiency of the operation. As shown in Figure 11, there are three chip contacts 2 and the black one is a marking wire, which is one, which can indicate the 0° position; in Figure 12, there are four chip contacts 2 and the black one is a mark There are one wire, which can indicate the direction shown in the figure (240°); in Figure 13, there are three chip contacts 2 and the black ones are marked wires, and there are two wires, which can indicate the direction of 240° shown in the figure; In 14, there are two laminar contacts 2, and the black ones are marked wires, which are three, which can indicate the direction shown in the figure. The above are only examples. In practical applications, the number and positions of the marking wires can be set very flexibly.

A through cavity 75 is provided in the middle of the mandrel 76, and the through cavity 75 extends axially along the mandrel 76, has two ends open, and does not communicate with the through groove 74.

Since the mandrel 76 is made of soft material (usually made of polyurethane, silicone, etc.) and poor rigidity, after the electrode is made, a guide wire (such as stainless steel wire, tungsten wire, etc.) can be inserted into the cavity 75 to enhance the hardness , To facilitate subsequent implantation operations.

Example 4

This embodiment provides an electrode, which is specifically fabricated on the basis of a multi-lumen tube 7, as shown in FIGS. 3 and 5-10, including: a multi-lumen tube 7 provided with a plurality of edges along the multi-lumen tube 7 A channel 70 extending axially and open at both ends; the multi-lumen tube 7 includes a first section 71, a second section 72, and a third section 73. The first section 71 and the third section 73 are respectively located in the At both ends of the second section 72, the outer layers of the first section 71 and the third section 73 of the multi-lumen tube 7 are removed, exposing the channel 70, and making the channel 70 form a through groove 74; the wire 6, arranged in the channel 70 and/or the through groove 74;

The first section 71 is sleeved with 8

connection contacts

8 and 8 insulation rings 81; the insulation ring 81 is transparent and elastic, and is generally made of polyurethane and other materials; the connection contacts 8 and the One end of the wire 6 is electrically connected, thereby forming a connecting section 41;

The third section 73 is sleeved with two

ring contacts

1 and 2 composite contacts 5, each composite contact 5 has 3 sheet contacts, and a plug 92 is installed at the end; the ring contact Point 1 and/or the sheet contact 2 in the composite contact 5 is electrically connected to the other end of the wire 6 to form a stimulating section 42; the composite contact 5 is the composite contact described in claim 5 Contact 5.

This embodiment takes 8 connection contacts, 2 ring contacts, and 6 chip contacts as examples. In practice, multiple connection contacts, multiple ring contacts, and multiple composite contacts can be set as needed. Point, there is no specific restriction here.

In the electrode of this embodiment, the multi-lumen tube 7 is divided into three sections as a whole. The outer part of the first section 71 is sheathed with a connecting contact 8 and an insulating ring 81 to form a connecting section 41; the outer part of the third section 73 is sheathed with an annular contact Point 1 and composite contact 5 have a plug 92 installed at the end to form a stimulation section 42. The second section 72 connects the connection section 41 and the stimulation section 42 to form an extension section 43. In the electrode 4 of this embodiment, the sheet-shaped contact 2 can be assembled by directly sheathing the composite contact 5 on the outside of the third section 73, which has the advantage of high assembly efficiency.

As a possible technical solution, if two ring contacts 1 are provided on the third section 73, and the two ring contacts 1 are arranged adjacently, the two adjacently arranged An insulating ring 81 is also sleeved in the middle of the ring contact 1 for insulation and isolation.

The connection contacts 8 sleeved on the first section 71 are electrically connected to the ring contacts 1 or the sheet contacts 2 sleeved on the third section 73 through the wires 6 in a one-to-one correspondence. The wires 6 are installed in the channel 70 and/or the through slot 74 in a one-to-one correspondence. After the connecting end 41 is inserted into the pulse generator, the 8 stimulus signals sent by the pulse generator can be independently delivered to the ring contact 1 or the sheet contact 2 of the stimulation section 42 through the 8 wires 6 without interfering with each other.

As shown in Fig. 10, one of the plurality of wires 6 is set as a marking wire. In the same way, after the entire electrode 4 is made, the location of each piece of contact 2 has been clarified. When the electrode 4 is implanted inside the human body, according to the orientation of the marking wire, the medical staff can know each piece of contact. The orientation of the contact 2 can be adjusted according to the orientation of the marked wire to adjust the orientation of the electrode 4, and then the sheet-like contact 2 can be adjusted to the target stimulation position.

A through cavity 75 is provided in the middle of the multi-lumen tube 7, and the through cavity 75 extends axially along the multi-lumen tube 7, has two ends open, and does not communicate with the channel 70. Since the multi-lumen tube 7 has a soft material and poor rigidity, a guide wire (such as a stainless steel wire, a tungsten wire, etc.) can be inserted into the through cavity 75 after the electrode is made to enhance the hardness and facilitate subsequent implantation operations.

A developing ring 82 is provided on the outer wall of the second section 72. The developing ring is directional and is used to determine the radial direction of the electrode sheet contacts in the body, so as to facilitate the adjustment of specific stimulation directions during treatment. The developing ring belongs to the prior art and will not be described in detail here.

Example 5

This embodiment provides a method for manufacturing an electrode. The connecting section 41 is manufactured first, and then the stimulation section 42 is manufactured, which specifically includes the following steps:

A certain length is selected from one end of the multi-lumen tube 7 as the first section 71, and a certain length is selected from the other end of the multi-lumen tube 7 as the third section 73, which is located between the first section 71 and the third section 73 Is the second paragraph 72;

The outer layer of the first section 71 and the third section 73 is removed, so that the part of the internal passage 70 of the multi-lumen tube 7 located in the first section 71 and the third section 73 is exposed to form a channel Slot 74;

Make the connecting section 41; weld one end of the wire 6 to the connecting contact 8, and sleeve the connecting contact 8 and the insulating ring 81 one by one at intervals on the first section 71; remove the wire 6 from the first section 71 The through groove 74 of the section 71 penetrates, and after passing through the channel 70 in the second section 72, it passes through the through groove 74 in the third section 73;

Make a stimulus section 42; weld the other end of the wire 6 to the sheet contact 2 on the ring contact 1 or the composite contact 5, and then bend the third section 73 and pass through the ring contact 1 or The composite contact 5; the ring contact 1 or the composite contact 5 is sleeved on the third section 73.

As a modification, the step of making the stimulation section 42 can also be: welding the other end of the wire 6 with the ring contact 1 or the sheet contact 2; bending the third section 73 and passing through the ring contact 1; Install the ring contact 1 or the sheet contact 2 on the third section 73; install the isolating ring 3 and the insulating ring 81, and install the sheet contact 2 on the isolating ring 3 . In this way, the self-strength requirement of the composite contact 5 is relatively low, and the welding difficulty is low.

As a deformation, the stimulation section 42 can also be made first, and then the connecting section 41 is made. The specific manufacturing steps include:

Make the stimulation section 42; weld one end of the wire 6 to the sheet contact 2 on the ring contact 1 or the composite contact 5, and then set the ring contact 1 or the composite contact 5 on the first On the third section 73; pass the wire 6 through the through slot 74 located in the third section 73, and pass through the through slot 74 located in the first section 71 after passing through the channel 70 located in the second section 72;

Making the connecting section 41; welding the other end of the wire 6 with the connecting contact 8, and bending the first section 71 through the connecting contact 8 and/or the insulating ring 81, so that the connecting contact 8 and/or The insulating rings 81 are sleeved on the first section 71 one by one at intervals.

As a modification, the step of making the stimulation section 42 can also be: welding one end of the wire 6 with the ring contact 1 or the sheet contact 2; setting the ring contact 1 on the third section 73 to make The ring contact 1 or the chip contact 2 is installed on the third section 73; the isolation ring 3 and the insulation ring 81 are installed, and the chip contact 2 is installed on the isolation ring 3.

Both of the above-mentioned manufacturing methods can realize the manufacture of electrodes. It should be emphasized that the above-mentioned steps are not definite and unchanged. As long as the electrode manufacturing can be completed, one or some of the above-mentioned steps can be adjusted.

At least two of the ring contacts 1 are provided on the third section 73, and when the two ring contacts 1 are arranged adjacent to each other, it also includes a middle sleeve between the two adjacent ring contacts 1 The step of setting up an insulating ring 81.

It also includes the step of connecting the composite contact 5 or the insulating ring 81 and the multi-lumen tube 7 as a whole by heat fusion.

It also includes between the connecting contact 8 and the multi-lumen tube 7, or between the ring contact 1 and the multi-lumen tube 7, or between the composite contact 5 and the multi-lumen tube The step of injecting glue or implanting filler between the tubes 7 for filling.

Obviously, the foregoing embodiments are merely examples for clear description, and are not intended to limit the implementation manners. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is unnecessary and impossible to list all the implementation methods here. The obvious changes or changes derived from this are still within the protection scope created by the present invention.

Claims

An isolation ring, which is characterized in that it includes:

The ring body (31) is made of insulating material and has a hollow inner cavity (30), which is suitable for sheathing;

At least one installation position (32) is arranged on the ring body (31), and is suitable for installing a chip contact (2).
The isolation ring according to claim 1, wherein the ring body (31) comprises:

The first ring body (33) is arranged in a ring shape and is located at one end of the ring body (31);

The second ring body (34) is arranged in a ring shape and is located at the other end of the ring body (31);

A connecting block (35) connects the first ring body (33) and the second ring body (34), and forms the installation position (32).
A composite contact, which is characterized in that it includes:

Flake contacts (2);

An isolation ring (3), the isolation ring (3) is the isolation ring (3) according to any one of claims 1-2, and the sheet contact (2) is installed in the installation position (32) superior.
An electrode, including a stimulation section (42), characterized in that: the stimulation section (42) includes:

A mandrel (76), with a number of through grooves (74) extending axially along the mandrel (76) on the outer wall;

There are several wires (6), which pass through the inside of the through slot (74);

An annular contact (1) and/or a composite contact (5) is sleeved on the outer side of the mandrel (76), and the composite contact (5) is the composite contact (5) described in claim 3;

One end of the wire (6) is electrically connected with the ring contact (1) and/or the sheet contact (2).
An electrode manufactured on the basis of a multi-lumen tube (7), which is characterized in that it comprises:

The multi-lumen tube (7) is provided with a plurality of channels (70) extending axially along the multi-lumen tube (7) and opening at both ends; the multi-lumen tube (7) includes a first section (71), a The second section (72) and the third section (73), the first section (71) and the third section (73) are respectively located at both ends of the second section (72), the multi-lumen tube ( 7) The outer layers of the first section (71) and the third section (73) are removed to expose the channel (70), and make the channel (70) form a through groove (74);

The wire (6) is arranged inside the channel (70) and/or the through slot (74);

At least one connection contact (8) and at least zero insulation rings (81) are sleeved on the first section (71); the connection contact (8) is electrically connected to one end of the wire (6) , Thereby forming a connecting section (41);

At least zero ring contacts (1) and at least one composite contact (5) are sleeved on the third section (73); the ring contact (1) and/or the composite contact (5) The sheet-shaped contact (2) is electrically connected to the other end of the wire (6) to form a stimulation section (42); the composite contact (5) is the composite contact ( 5).
The electrode according to claim 5, characterized in that: the third section (73) is provided with at least two of the ring contacts (1), and the two ring contacts (1) are arranged adjacent to each other At this time, an insulating ring (81) is sleeved between the two adjacent annular contacts (1).
The electrode according to claim 5, characterized in that: the connecting contact (8) sleeved on the first section (71) and the ring contact (8) sleeved on the third section (73) 1) or the chip contacts (2) are electrically connected in one-to-one correspondence through the wires (6).
The electrode according to claim 5, characterized in that: at least one of the wires (6) is a marking wire.
The manufacturing method of the electrode according to any one of claims 5-8, comprising the following steps:

A certain length is selected from one end of the multi-lumen tube (7) as the first section (71), and a certain length is selected from the other end of the multi-lumen tube (7) as the third section (73), which is located in the first section (71) The middle part of the third paragraph (73) is the second paragraph (72);

The outer layer of the first section (71) and the third section (73) is removed, so that the inner channel (70) of the multi-lumen tube (7) is located in the first section (71) and the Part of the third section (73) is exposed to form a through groove (74);

Weld one end of the wire (6) with the connection contact (8), and sleeve the connection contact (8) and the insulating ring (81) on the first section (71); the wire (6) is located at the The through groove (74) of the first section (71) penetrates, and after the passage (70) in the second section (72), it passes through the through groove (74) in the third section (73) ；

Weld the other end of the wire (6) with the sheet contact (2) on the ring contact (1) or the composite contact (5), and then bend the third section (73) through the ring The contact (1) or the composite contact (5); the ring contact (1) or the composite contact (5) is sleeved on the third section (73); or, the wire The other end of (6) is welded to the ring contact (1) or the sheet contact (2); the third section (73) is bent and passed through the ring contact (1), so that the ring contact Point (1) or the chip contact (2) is installed on the third section (73); install the isolation ring (3) and the insulation ring (81), and install the chip contact (2) On the isolation ring (3);

Or include the following steps,

A certain length is selected from one end of the multi-lumen tube (7) as the first section (71), and a certain length is selected from the other end of the multi-lumen tube (7) as the third section (73), which is located in the first section (71) The middle part of the third paragraph (73) is the second paragraph (72);

The outer layer of the first section (71) and the third section (73) is removed, so that the inner channel (70) of the multi-lumen tube (7) is located in the first section (71) and the Part of the third section (73) is exposed to form a through groove (74);

Solder one end of the wire (6) with the sheet contact (2) on the ring contact (1) or the composite contact (5), and then connect the ring contact (1) or the composite contact (5) ) Is sleeved on the third section (73); the wire (6) is inserted from the through slot (74) located in the third section (73), through the channel located in the second section (72) (70) Then pass through the through slot (74) located in the first section (71); or, solder one end of the wire (6) to the ring contact (1) or the chip contact (2); The ring contact (1) is sleeved on the third section (73), so that the ring contact (1) or the chip contact (2) is installed on the third section (73) On; install the isolation ring (3) and the isolation ring (81), and install the sheet contact (2) on the isolation ring (3);

The other end of the wire (6) is welded to the connecting contact (8), and the first section (71) is bent and passed through the connecting contact (8) and the insulating ring (81), so that the connecting contact ( 8) and an insulating ring (81) are sleeved on the first section (71).
The method of manufacturing an electrode according to claim 9, characterized in that: at least two of the ring contacts (1) are provided on the third section (73), and two of the ring contacts (1) When they are arranged adjacently, it also includes the step of sheathing an insulating ring (81) between the two adjacently arranged annular contacts (1).