CN107029346B

CN107029346B - Electrode fixing anchor

Info

Publication number: CN107029346B
Application number: CN201710274285.1A
Authority: CN
Inventors: 王航; 宋春辉; 刘凯
Original assignee: Beijing Pins Medical Co Ltd
Current assignee: Beijing Pins Medical Co Ltd
Priority date: 2017-04-25
Filing date: 2017-04-25
Publication date: 2021-03-16
Anticipated expiration: 2037-04-25
Also published as: CN107029346A

Abstract

An electrode fixing anchor is used for fixing an electrode when the electrode fixing anchor is implanted in a body, and is particularly used for fixing the electrode in spinal cord electrical stimulation. The electrode anchor is formed of a single member having a through hole in a longitudinal direction thereof for the electrode to pass through, and a fixing means for fixing the electrode anchor.

Description

Electrode fixing anchor

Technical Field

The invention relates to a fixing anchor, in particular to a fixing anchor for implanting a fixing electrode in a body. Belongs to the technical field of medical appliances.

Background

Spinal cord electrical stimulation devices are commonly used clinically to suppress pain, treat spinal cord injuries, and the like. Spinal cord stimulation electrodes treat by stimulating spinal nerves, and the electrodes need to be fixed in the spinal epidural space. In the prior art, the electrodes may be anchored to the bone or surrounding tissue near the stimulation site by anchoring, gluing, fiber suturing, adhesive bonding, or the like. The existing fixing anchor usually adopts structures such as barbs, spinous processes and nails, and the defects are that nerves around the spine of a human body are very sensitive, if the barbs are adopted, long-time stimulation is formed on the peripheral nerves, and a patient implanted with the fixing anchor feels very uncomfortable, so the barbs around the spine are not suitable for being adopted. Many electrode anchor have adopted the mode of fastening fixed electrode with the operation suture, and this kind of mode shortcoming is also very obvious, if the anchor constitutes for pure silica gel, and general hole diameter can not be too big than the electrode diameter, otherwise difficult the fastening because the silica gel surface has some viscidities, just is relative difficult when placing the anchor. In the wire binding link, the reliability completely depends on the hand feeling of a doctor, the electrode is easy to damage due to too tight binding, and the fixation effect is not ideal due to loose binding. Because the operation is performed in a small space, the operation is relatively difficult when the wire is tied. And part of the fixing anchors have more parts, so that the cost is high, and the operation steps are complicated when a doctor uses the fixing anchors. Moreover, some anchors are often displaced because of their weak fixation to the electrode. In order to solve the problems of the prior fixing anchor, a more practical fixing anchor is designed, and a plurality of designs which are suitable for being implanted into a human body and protecting an electrode are made on the appearance.

Disclosure of Invention

The invention provides an electrode anchor, which is composed of a single part, a through hole is formed in the longitudinal direction of the part for an electrode to pass through, and a fixing device is further included for fixing the electrode anchor.

Further, the single component also includes an anti-migration device.

Further, the single component is a cylinder.

Further, the cylinder has a circular arc-shaped track.

Further, the fixation means comprises at least one through hole.

Further, the fixing device further comprises at least one groove.

Further, the displacement prevention device comprises an exhaust device.

Further, the vent may be a continuous slit, an intermittent slit, and/or a through hole.

Further, the anti-displacement device also comprises a convex structure.

Further, the bulge structure is a circumferential bulge located in the middle of the fixing anchor.

Further, the protruding structure is a bump located on the fixing anchor.

Further, the single component is made of an elastically deformable material.

Furthermore, the material that has elasticity deformability is the silica gel material.

Further, the component includes at least one wing.

Further, the outer surface of the component has a convex point.

Further, the end of the cylinder is tapered.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention

FIG. 2 is a cross-sectional view of an embodiment of the present invention

FIG. 3 is a perspective view of the second embodiment of the present invention

FIG. 4 is a second assembly view of the present invention

FIG. 5 is a schematic diagram of the second embodiment of the present invention

FIG. 6 is a three-dimensional view of an embodiment of the present invention

FIG. 7 is a three-assembly view of the present invention

FIG. 8 is a schematic diagram of the third embodiment of the present invention

Detailed Description

The reference names of the invention are as follows:

101 through hole, 102 through hole, 103 groove, 103 'groove, 104 elongated slot, 105 wing, 201 embodiment two through hole, 202 embodiment two groove, 203 embodiment two elongated slot, 204', 204 embodiment two wing, 205 protruding structure, 206 electrode, 301 embodiment three through hole, 302 embodiment three wing, 303 embodiment three through hole, 304 bump, 305 taper end, 306 bend, 307 embodiment three electrode, 308 cavity.

As shown in FIGS. 1 and 2, in the first embodiment of the electrode anchor, the electrode anchor according to the present invention is formed of a single member having a cylindrical main body structure, a through hole 101 is formed in the longitudinal direction of the electrode anchor for the electrode to pass through, two through holes 102 and 102 ' are further formed in the electrode anchor, two wings 105 and 105 ' are further extended from the electrode anchor, a recess 103 is formed between the through hole 102 and the wings 105, and another recess 103 ' is formed between the through hole 102 ' and the wings 105 '. 104 is the vent on the anchor and is an elongated slot. It should be noted that the elongated slot is only one type of the vent device, and the vent device may be provided in the form of an intermittent slot, a plurality of through holes, and the like. The anchor is made of silica gel. When the fixing anchor is used, the fixing anchor directly penetrates through the through hole 101 in the middle of the fixing anchor, surgical sutures can be bound at the grooves 103 and 103', and excess air in the inner cavity can be released by the slender gap 104 during binding, so that the binding is more reliable. At the through holes of 102 and 102', the electrode anchor is fixed to the fascia tissue of the body with surgical sutures. The wings of 105 and 105' serve the purpose of reinforcement and prevention of flipping.

Example two

Most of the arrangements of this embodiment are the same as those of the first embodiment, and all the features of the first embodiment that are not excluded in this embodiment can be applied to this embodiment.

As shown in fig. 3 to 5, in the second embodiment of the electrode anchor, the electrode anchor according to the present invention is formed of a single member, and the main body structure of the electrode anchor is a cylinder, and a through hole 201 is formed in the longitudinal direction of the electrode anchor, the electrode 206 can directly pass through the through hole 201, the anchor is symmetrically provided with 4 pairs of wings 204 and 204 ', a

groove

202, 203 is formed between the adjacent wings 204 and 204', and is an elongated gap of the air exhausting means on the anchor, and a circumferential protrusion 205 is further formed in the middle of the anchor. When the fixing anchor is used, surgical sutures can be bound at the groove position of the fixing anchor 202, and the slender gap of the fixing anchor 203 can release redundant air in the inner cavity during binding, so that the binding is more reliable. After one turn of the anchor is tied with surgical sutures at the notch 202, the electrode anchor is secured to the fascia tissue of the body. In order to prevent the electrode and the anchor from moving relative to each other, a circumferential projection 205 is provided in the middle of the anchor as displacement prevention means. The lower part of the convex structure 205 contacts with human tissue to form a pivot, and the anchor is drawn into an arc shape after the two end parts are bound with wires, as shown in fig. 5, so that the electrode exists in the anchor in an arc-shaped bent state, and the friction force between the anchor and the electrode is increased. It should be noted that the protrusion located at the middle circumference of the anchor is only one way of the protrusion structure, and any protrusion structure that can be adapted to contact with the body and form a fulcrum after contacting with the human tissue so that the two ends of the anchor can be pulled into an arc shape after being tied with the thread is within the scope of the present invention, for example, a protrusion located on the anchor.

EXAMPLE III

The second embodiment can be further developed into a third embodiment, as shown in fig. 6 to 8, still made of silicone, in the third embodiment, the through hole 301 of the electrode anchor is made into a circular arc track to form a curved portion 306, a wing 302 extends from one side of the anchor, the wing 302 includes three through holes 303, the anchor has a convex point 304, the end 305 is tapered, the electrode anchor can be laterally buckled and opened, and an inner cavity 308 is formed when the electrode anchor is closed. Because the anchor 301 is made into a circular arc track, the electrode cannot be directly penetrated out from one end of the electrode anchor to the other end in the electrode assembling mode, as shown in fig. 7, the side wings 302 can be pulled open to expose the inner cavity 308, the electrode 307 is placed in the inner cavity, the relative movement between the electrode and the anchor can be well blocked by the bending part of 306, the electrode is fastened and fixed on surrounding fascia tissues by surgical sutures at the through holes of 303, and the tension of the anchor on the skin can be well relieved by the taper 30 at the end part. The end portions may also be tapered in the first and second embodiments. The bump 304 may hinder subcutaneous movement of the anchor, and it should be noted that in both embodiments one and two, there may be a structure similar to the bump 304.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. A spinal cord stimulating electrode anchor, comprising: the electrode binding device is composed of a single part, a through hole is formed in the longitudinal direction of the part and used for an electrode to pass through, the electrode binding device further comprises a fixing device used for fixing an electrode fixing anchor, the single part further comprises a displacement prevention device used for blocking relative movement between the electrode and the fixing anchor, and the displacement prevention device comprises an exhaust device which can release redundant air in an inner cavity during binding so that the binding is more reliable; the exhaust means is a continuous slit, an intermittent slit and/or a through hole.

2. The electrode anchor of claim 1, wherein the unitary member is a cylinder.

3. The electrode anchor of claim 2, wherein the cylinder has a circular arc shaped trajectory.

4. The electrode anchor of any one of claims 1-3, wherein the fixation device includes at least one through-hole.

5. The electrode anchor of any one of claims 1-3, wherein the fixation device further comprises at least one groove.

6. The electrode anchor of any one of claims 1-3, wherein the anti-migration apparatus further comprises a raised structure.

7. The electrode anchor of claim 6, wherein the projection arrangement is a circumferential projection located at an intermediate location of the anchor.

8. The electrode anchor of claim 6, wherein the raised structure is a bump on the anchor.

9. The electrode anchor of claim 1, wherein the unitary member is formed of a resiliently deformable material.

10. The electrode anchor of claim 9, wherein the resiliently deformable material is a silicone material.

11. The electrode anchor of claim 1, including at least one wing in the unitary member.

12. The electrode anchor of claim 1, wherein the outer surface of the unitary member has a convex point.

13. The electrode anchor of claim 2, wherein the end of the cylinder is tapered.