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An electrode anchor

A technology for fixing anchors and electrodes, which is applied in the field of medical devices and can solve problems such as displacement, difficulty in operation, and difficulty in placing anchors.

Active Publication Date: 2021-03-16
BEIJING PINS MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing anchors often use structures such as barbs, spinous processes, and nails. Their disadvantage is that the peripheral nerves of the human spine are very sensitive. If barbs are used, they will stimulate the surrounding nerves for a long time, and the implanted device Most patients will feel very uncomfortable, so it is not suitable to use barbs around the spine
Many electrode anchors adopt the method of fastening the electrodes with surgical sutures. This method has obvious disadvantages. If the anchor is made of pure silica gel, the diameter of the inner hole should not be much larger than the diameter of the electrode, otherwise it will not be easy to tie. Tight, because the silicone surface has some stickiness, it is relatively difficult to place the anchor
In the process of tying the wire, the reliability depends entirely on the doctor's hand feeling. If it is too tight, the electrode will be easily damaged, and if it is loose, the fixing effect will not be ideal.
Because it operates in a small space, it is relatively difficult to operate when tying the thread
Moreover, there are many parts in some fixed anchors, not only the cost is high, but also the operation steps are complicated for doctors to use.
Moreover, some anchors often shift because they are not firmly fixed to the electrodes.

Method used

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Embodiment 2

[0031] Most of the configurations of this embodiment are the same as those of Embodiment 1, and all the features of Embodiment 1 that are not excluded in this embodiment can be applied to this embodiment.

[0032] Such as Figure 3-5 As shown, it is the embodiment of the second electrode anchor. The electrode anchor of the present invention is composed of a single component, and the main body structure is a cylinder. There is a through hole 201 in the longitudinal direction of the electrode anchor. The hole 201 passes directly through, and the fixed anchor is symmetrically distributed with four pairs of side wings 204 and 204', and a groove 202 is formed between the adjacent side wings 204 and 204', and 203 is a slender slit for the exhaust device on the fixed anchor. The fixed anchor also has a circumferential protrusion 205 in the middle. When the fixing anchor is used, surgical sutures can be bound at the groove of 202, and the slender slit of 203 can release excess air in...

Embodiment 3

[0034] The second embodiment can then evolve into a third embodiment, such as Figure 6-8 As shown, it is still made of silica gel material. In the third embodiment, the through hole 301 of the electrode fixing anchor is made into a circular arc-shaped track, thereby forming a curved part 306. There is a side wing 302 extending on one side of the fixing anchor. 302 includes three through-holes 303 , the fixing anchor has convex points 304 , and the end 305 is tapered. The electrode fixing anchor can be buckled and opened laterally, and an inner cavity 308 is formed when closed. Because the fixed anchor 301 is made into an arc-shaped track, the way of assembling the electrode cannot directly pass the electrode from one end of the electrode fixed anchor to the other end, such as Figure 7 , the side wings 302 can be opened to expose the inner cavity 308, and then the electrode 307 is placed in the inner cavity. The curved part of 306 can well hinder the relative movement between...

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Abstract

An electrode fixing anchor is used for fixing an electrode when the electrode is implanted in vivo and especially for fixing electrodes in spinal cord electrical stimulation. The electrode fixing anchor is formed by a single member having a through hole in the longitudinal direction for an electrode to pass and having a fixing device for fixing the electrode fixing anchor.

Description

technical field [0001] The invention relates to a fixed anchor, in particular to a fixed anchor used for implanting a fixed electrode in the body. It belongs to the technical field of medical equipment. Background technique [0002] Spinal cord stimulation equipment is often used clinically to suppress pain, treat spinal cord injuries, and so on. Spinal cord stimulation electrodes are used to stimulate the nerves in the spinal cord, and the electrodes need to be fixed in the epidural space of the spinal cord. In the prior art, the electrode can be fixed on the bone or surrounding tissue near the stimulation site by means of anchoring, pasting, fiber suture, bonding and the like. Existing anchors often use structures such as barbs, spinous processes, and nails. Their disadvantage is that the peripheral nerves of the human spine are very sensitive. If barbs are used, they will stimulate the surrounding nerves for a long time, and the implanted device Most patients will feel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N1/05
CPCA61N1/0551A61N1/0558
Inventor 王航宋春辉刘凯
Owner BEIJING PINS MEDICAL
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