Brain wave signal acquisition device

Abstract

The invention relates to a brain wave signal acquisition device, belongs to the technical field of medical instruments, and solves the problems that in the prior art, a brain wave signal acquisition device is implanted into the cerebral cortex of a human body through craniotomy, the trauma of a patient is large, the surgical risk is high, and various complications can be caused. The brain wave signal acquisition device comprises a bracket main body, an electrode plate and a conductive wire; the stent body is of an open curled cylindrical structure composed of a plurality of grid units, openings are formed in the two axial ends of the stent body, and gaps are formed in the curled butt joint positions on the side wall face of the stent body. The electrode plates are arranged on the grid units; the conductive wire is wound on the stent main body, one end of the conductive wire is connected with the electrode plate, and the other end of the conductive wire is wound to the near end of the stent main body. The brain wave signal acquisition can be realized without a craniotomy operation, so that the trauma to a patient is small, and the operation risk is obviously reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, and in particular relates to an electroencephalogram signal acquisition device. BACKGROUND

[0002] There is a kind of electroencephalogram signal acquisition device in the prior art which is implanted into the subcortex of the human brain by craniotomy for signal collection. However, the scheme of implanting the electroencephalogram signal acquisition device into the subcortex of the human brain by craniotomy has the problems of great trauma to the patient, high risk of surgery and causing various complications. SUMMARY

[0003] In view of the above analysis, the embodiments of the present application aim to provide an electroencephalogram signal acquisition device to solve the problems of great trauma to the patient, high risk of surgery and causing various complications in the scheme of implanting the electroencephalogram signal acquisition device into the subcortex of the human brain by craniotomy in the prior art.

[0004] The purpose of the present application is achieved as follows: An electroencephalogram signal acquisition device, comprising: a support body, the support body being an open crimped cylindrical structure composed of a plurality of grid units, the support body having openings at both axial ends, and a crimped butt joint position on the side wall surface of the support body forming a gap; an electrode sheet, the electrode sheet being arranged on the grid unit; a conductive wire, the conductive wire being wound on the support body, one end of the conductive wire being connected to the electrode sheet, and the other end being wound to the proximal end of the support body.

[0005] Further, the outline of the grid unit defines the shape of the grid unit as a rhombus by the solid rib, and the connecting line of two opposite acute angles of the rhombus is arranged parallel to the axis of the support body; adjacent two grid units have a common solid rib.

[0006] Further, the solid rib of at least part of the grid units comprises a wide rib and a narrow rib.

[0007] Further, among the two opposite acute angles of the grid unit, the solid rib constituting one of the acute angles is a wide rib, and the solid rib constituting the other acute angle is a narrow rib.

[0008] Further, the number of grid units of the stent body in the planar unfolded state has the following arrangement rule from the proximal end to the distal end of the stent body: the number of grid units in each column increases from one to four, and from the first column with four grid units, the number of grid units in each column is arranged alternately in four and three, and the number of grid units at the distal end of the stent body is four; in each column with four grid units, the acute angle solid rib close to the proximal end is a narrow rib, and the acute angle solid rib close to the distal end is a wide rib.

[0009] Further, the stent body is made of memory alloy, and the stent body is laser engraved, and the grid units are distributed in 360° spiral symmetry.

[0010] Further, the grid unit is provided with a leg, and the electrode sheet is arranged on the leg.

[0011] Further, the shape of the leg is one or a combination of circular, circular ring, oval, and groove.

[0012] Further, the plurality of electrode sheets are arranged on the circumferential side wall of the stent body, so that the electrode sheets are arranged at positions every 90°.

[0013] Further, the solid rib of the stent body is provided with a groove for winding the conductive wire.

[0014] Further, the outer diameter of the stent body is 2mm-6mm, the wall thickness of the cylindrical stent body is 0.05mm-0.5mm; the electrode sheet is a circular sheet structure, the diameter is 0.1mm-1mm, and the thickness is 0.01mm-0.1mm.

[0015] Compared with the prior art, the present application can at least achieve one of the following beneficial effects: a) The brain wave signal acquisition device provided by the present application does not need to be craniotomied, only needs to be inserted into the jugular vein of the neck like a traditional blood vessel stent, reaches the blood vessel near the motor cortex of the brain, and can be tightly attached to the inner wall of the blood vessel to realize brain wave signal acquisition, which has small trauma to the patient, significantly reduces the risk of surgery, and will not cause various complications.

[0016] b) The brain wave signal acquisition device provided by the present application adopts a stent body with an open curling structure, which can adapt to smaller inner diameter specifications of the catheter for transportation and smaller push resistance.

[0017] c) The brain wave signal acquisition device provided by the application adopts the design of wide and narrow entity ribs in the grid unit of the support body, which not only ensures the pushing property of the support body in the catheter, further improves the flexibility of the support body, but also maintains a good cylindrical shape under the condition of large-angle bending of the support body, effectively avoiding the collapse of part of the support body under the condition of large-angle bending.

[0018] d) The brain wave signal acquisition device provided by the application reserves support legs on the grid unit of the support body, increases the bonding area of the electrode sheet and the support body, and improves the firmness.

[0019] e) The brain wave signal acquisition device provided by the application sets grooves on the entity ribs of the support body, so that the conductive wire does not protrude outside the support diameter when winding on the support, and the conductive wire does not move randomly on the support, reducing the risk of electrode sheet failure. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0021] Figure 1 The first angle structure schematic diagram of the brain wave signal acquisition device provided by the application; Figure 2 The second angle structure schematic diagram of the brain wave signal acquisition device provided by the application; Figure 3 The structure schematic diagram of the support body in the planar unfolded state provided by the application; Figure 4 The local structure schematic diagram of the brain wave signal acquisition device provided by the application; Figure 5 The structure schematic diagram of the support body winding the conductive wire provided by the application; Figure 6 The structure schematic diagram of the support body provided by the application setting a circular support leg; Figure 7 The structure schematic diagram of the support body provided by the application setting a circular ring support leg; Figure 8 The structure schematic diagram of the support body provided by the application setting an oval support leg; Figure 9 The structure schematic diagram of the support body provided by the application setting a groove-shaped support leg.

[0022] Reference signs: 1, support body; 1-1, grid unit; 2, electrode sheet; 3, conductive wire; 4, wide rib; 5, narrow rib; 6, leg; 61, round leg; 62, circular ring leg; 63, oval leg; 64, groove-shaped leg; 7, gap; 8, groove; 9, transverse division line; 10, columnar division line. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. It should be explained that the embodiments and the features in the embodiments in the present disclosure can be combined, separated, interchanged and / or rearranged without conflict, if possible. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor fall within the scope of protection of the present application.

[0024] In the drawings, the size and relative size of the components can be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be carried out differently, a specific process sequence can be performed in an order different from that described. For example, two consecutively described processes can be performed substantially simultaneously or in an order opposite to that described. In addition, the same reference numerals represent the same components.

[0025] The terms used herein are for the purpose of describing specific embodiments and are not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, to the extent that the terms "including," "includes," "having," "has," "a," "an," "the," and / or " comprises," "comprising," are used in this specification, such terms are associated with an open-ended term having the same meaning as "comprising" and "containing" when applied to entities made up of more than one constituent. It is to be further noted that, as used herein, the terms "substantially," "approximately," and other similar terms are used as synonyms for "about," and are employed to designate an approximated value, a calculated value, and / or a value provided with an inherent deviation that would be recognized by one of ordinary skill in the art.

[0026] Embodiment 1 One specific embodiment of the present application, as shown in Figures 1 to 5 discloses an electroencephalogram signal acquisition device, comprising a support body 1, an electrode sheet 2 and a conductive wire 3; The bracket body 1 is an open crimped cylinder structure composed of a plurality of grid units 1-1, the bracket body 1 has openings at both axial ends, and a gap 7 is formed at a crimped butt joint position on the side wall surface of the bracket body 1; the electrode sheet 2 is arranged on the grid unit 1-1; the conductive wire 3 is wound on the bracket body 1, one end of the conductive wire 3 is connected with the electrode sheet 2, and the other end is wound to the proximal end of the bracket body 1.

[0027] In the embodiment, the bracket body 1 is designed as an open crimping, specifically as an open crimped cylinder structure. That is to say, the bracket body 1 is a cylinder structure with openings at both axial ends formed by crimping operation. Here, “open” means that the side wall of the cylinder-shaped bracket body 1 is not closed, not a complete cylindrical surface, but has an axially arranged gap 7. Due to the existence of the axially arranged gap 7, the diameter of the bracket body 1 can be changed within a certain range, so as to adapt to smaller diameter specifications of the catheter for transportation and smaller pushing resistance, so that the collection device can reach the target position more smoothly.

[0028] In the embodiment, the outline of the grid unit 1-1 is defined by the solid rib, the shape of the grid unit 1-1 is a rhombus or an approximate rhombus, and the connecting line of two opposite acute angles of the rhombus is arranged parallel to the axis of the bracket body 1; the adjacent two grid units 1-1 have a shared solid rib. That is to say, the shape of the solid rib in the embodiment is not a straight line in strict sense, but can have appropriate bending, so that the grid unit 1-1 as a whole has a rhombic shape.

[0029] In the embodiment, the solid rib of at least part of the grid unit 1-1 includes a wide rib 4 and a narrow rib 5. Preferably, among the two opposite acute angles of the grid unit 1-1, the solid rib constituting one acute angle is the wide rib 4, and the solid rib constituting the other acute angle is the narrow rib 5. The wide rib 4 can improve the pushability of the bracket body 1 in the catheter, and the narrow rib 5 can improve the flexibility of the bracket.

[0030] In the embodiment, the bracket body 1 in the planar unfolded state has a transverse division line 9, the transverse division line 9 divides each column of grid units 1-1 into two parts with approximately equal areas, and can also be understood as that the transverse division line 9 divides each column of grid units 1-1 into two halves approximately symmetrical in upper and lower directions; each column of grid units 1-1 has a column division line 10, the column division line 10 divides all grid units 1-1 in each column into two parts with approximately equal areas in left and right directions, and the included angle between the transverse division line 9 and the column division line 10 is 80°-85°.

[0031] In one of the optional embodiments, the number of the grid units 1-1 of the stent body 1 in the planar unfolded state has the following arrangement rule from the proximal end to the distal end of the stent body 1: the number of the grid units 1-1 in each column increases from one to four, and from the first column with four grid units 1-1, the number of the grid units 1-1 in each column is arranged alternately in four and three, and the number of the grid units 1-1 at the distal end of the stent body 1 is four; in each column with four grid units 1-1, the acute angle solid rib close to the proximal end is the narrow rib 5, and the acute angle solid rib close to the distal end is the wide rib 4. The structure of the grid unit 1-1 using wide and narrow solid ribs not only ensures the pushability of the stent body 1 in the catheter, but also further improves the flexibility of the stent body, and can still maintain a good cylindrical shape under the condition of large-angle bending of the stent body, effectively avoiding the collapse of part of the stent body under the condition of large-angle bending.

[0032] In the embodiment, the material of the stent body 1 is a memory alloy, such as a nickel-titanium alloy, a cobalt-chromium alloy, and the like. The stent body 1 is laser engraved.

[0033] In one of the optional embodiments, the stent body 1 has a 360° helical symmetry structure, which can also be understood as that the plurality of grid units 1-1 of the stent body 1 are distributed in 360° helical symmetry. This structure can improve the contact ability of the electrode sheet with the target tissue.

[0034] In the embodiment, the grid unit 1-1 is provided with a leg 6, and the electrode sheet 2 is arranged on the leg 6 to increase the bonding area of the electrode sheet 2 with the stent body and improve the firmness. Preferably, the leg 6 is arranged on the narrow rib 5 of the grid unit 1-1, and the leg 6 can be reserved on the solid rib during laser engraving. In this way, the electrode sheet 2 is also arranged on the narrow rib 5, so as to reduce the push resistance of the stent body 1 in the catheter.

[0035] In one of the optional embodiments, the electrode sheet 2 is connected to the outside of the stent body 1 by adhesion or welding, so that the position of the electrode sheet 2 is higher than the outer diameter of the stent body 1, and the electrode sheet 2 is more fully attached to the blood vessel wall, and the signal acquisition is clearer. The conductive wire 3 has a plurality of wires, each wire 3 is connected to one electrode sheet 2, and the conductive wire 3 is wound on the stent body 1 after being connected to the electrode sheet 2. The plurality of conductive wires 3 converge at the proximal end of the stent body.

[0036] In the embodiment, the shape of the leg 6 can be one or a combination of a circle, a circular ring, an ellipse, and a groove. Figures 6 to 9The round leg 6-1, the circular ring leg 6-2, the oval leg 6-3 and the groove-shaped leg 6-4 are shown. The electrode sheet 2 is connected to the leg 6 by means of adhesion or welding, and the conductive wire 3 passes below the leg. By using the above-mentioned shaped legs, the adhesion area of the electrode sheet 2 to the support body 1 can be increased, and the connection firmness can be improved.

[0037] Preferably, the leg 6 is a circular ring leg, and the area of the circular ring leg 6-1 is less than or equal to the area of the electrode sheet 2. Since the circular ring leg has a central hole, the conductive wire 3 can pass through the central hole and be bonded by glue, and the glue will overflow from the central hole and further reinforce the surface of the leg, so that the adhesion is more firm.

[0038] In one optional embodiment, the electrode sheets 2 are uniformly distributed in the 360° direction of the diameter of the support body 1. It can also be understood that the plurality of electrode sheets 2 are dispersedly arranged on the circumferential side wall of the support body 1, so that the electrode sheets 2 are arranged at positions every 90°. This structure can make the brain wave signal acquisition device more complete in signal reception after being implanted in the human body.

[0039] In one optional embodiment, a groove 8 is designed on the part of the support body 1 for winding the conductive wire 3, and the conductive wire 3 can be routed along the groove 8, so that the conductive wire 3 does not protrude out of the outer diameter of the support body 1 when it is wound on the support body 1. Specifically, the solid rib of the support body 1 is provided with the groove 8 for winding the conductive wire 3, and the groove 8 is arranged on the outer surface and the upper and lower surfaces of the solid rib, and no groove is arranged on the inner surface of the solid rib, that is, the solid rib for winding the conductive wire is designed with three grooves. This structure can prevent the conductive wire 3 from piling up, overlapping, loosening and displacing on the support body 1 due to friction during the pushing process, thereby reducing the risk of failure of the electrode sheet 2.

[0040] In one optional embodiment, the outer diameter of the cylindrical support body 1 is 2-6 mm, and the wall thickness of the cylindrical support body 1, that is, the thickness of the solid rib, is 0.05-0.5 mm.

[0041] In this embodiment, the wide rib 4 and the narrow rib 5 have the same thickness but different widths. For example, the width of the wide rib 4 is 50-80 μm, and the width of the narrow rib 5 is 25-45 μm.

[0042] In one optional embodiment, the electrode sheet 2 is a circular or oval sheet. For example, the electrode sheet 2 is a circular sheet structure with a diameter of 0.1-1 mm and a thickness of 0.01-0.1 mm.

[0043] Compared with the prior art, the brain wave signal acquisition device provided in the embodiment has the following beneficial effects: 1. Without craniotomy, only need to insert the collection device into the jugular vein of the neck like a traditional vascular stent, to the blood vessel near the motor cortex of the brain, the collection device can adhere to the inner wall of the blood vessel, and the brain wave signal collection can be realized, which has small trauma to the patient, significantly reduces the risk of operation, and will not cause various complications.

[0044] 2. The stent body with an open curling structure can adapt to smaller diameter catheters for delivery and smaller push resistance.

[0045] 3. The grid unit of the stent body adopts a wide and narrow solid rib design, which not only ensures the pushability of the stent body in the catheter, but also further improves the flexibility of the stent body, and can still maintain a good cylindrical shape under large-angle bending, effectively avoiding the collapse of the stent body under large-angle bending.

[0046] 4. The grid unit of the stent body has a reserved leg, which increases the bonding area of the electrode sheet and the stent body and improves the firmness.

[0047] 5. By setting grooves on the solid ribs of the stent body, the conductive wire will not protrude outside the stent diameter when winding on the stent, and the conductive wire will not move randomly on the stent, reducing the risk of electrode sheet failure.

[0048] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An electroencephalogram signal acquisition device, characterized by comprising: The application relates to a stent, which comprises: a stent body (1) which is an open crimped cylinder structure composed of a plurality of grid units (1-1), the stent body (1) having openings at two axial ends, and slits (7) being formed at crimped butt joint positions on the side wall surface of the stent body (1); electrode sheets (2) arranged on the grid units (1-1); and a conductive wire (3) wound on the stent body (1), one end of the conductive wire (3) being connected with the electrode sheets (2), and the other end being wound to the proximal end of the stent body (1).

2. The brainwave signal acquisition apparatus according to claim 1, characterized by The profile of the grid unit (1-1) is defined by solid ribs, the shape of the grid unit (1-1) is a rhombus, and the connecting line of two opposite acute angles of the rhombus is arranged parallel to the axis of the stent body (1); and adjacent two grid units (1-1) have shared solid ribs.

3. The brainwave signal acquisition apparatus according to claim 2, characterized by At least part of the solid ribs of the grid unit (1-1) comprises wide ribs (4) and narrow ribs (5).

4. The brainwave signal acquisition apparatus according to claim 3, characterized by In the two opposite acute angles of the grid unit (1-1), the solid rib constituting one of the acute angles is a wide rib (4), and the solid rib constituting the other acute angle is a narrow rib (5).

5. The brainwave signal acquisition apparatus according to claim 4, characterized by In the planar unfolded state of the stent body (1), the number of the grid units (1-1) has the following arrangement rule from the proximal end to the distal end of the stent body (1): The number of the grid units (1-1) in each column increases from one to four, and starting from the column with four grid units (1-1) for the first time, the number of the grid units (1-1) in each column is arranged alternately in four and three, and the number of the grid units (1-1) at the distal end of the stent body (1) is four; In each column with four grid units (1-1), the solid rib close to the acute angle of the proximal end is a narrow rib (5), and the solid rib close to the acute angle of the distal end is a wide rib (4).

6. The brainwave signal acquisition apparatus according to claim 1, characterized by The stent body (1) is made of a memory alloy, the stent body (1) is laser-engraved, and the grid units (1-1) are distributed in 360-degree spiral symmetry.

7. The brainwave signal acquisition apparatus according to claim 1, characterized by The grid units (1-1) are provided with supporting legs (6), and the electrode sheets (2) are arranged on the supporting legs (6).

8. The brainwave signal acquisition apparatus according to claim 7, characterized by The shape of the supporting leg (6) is one or a combination of circular, circular ring, oval and groove.

9. The brainwave signal acquisition apparatus according to claim 1, characterized by A plurality of the electrode sheets (2) are arranged on the circumferential side wall of the stent body (1) in a dispersed manner, so that the electrode sheets (2) are arranged at positions every 90 degrees.

10. The brainwave signal acquisition apparatus according to claim 1, characterized by The solid ribs of the stent body (1) are provided with grooves (8) for winding the conductive wire (3).

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