A stimulation and acquisition device

Abstract

This invention relates to the field of stimulation acquisition technology, specifically disclosing a stimulation and acquisition device, including a packaging tube, an acquisition head, and stimulation electrodes. The acquisition head and stimulation electrodes are integrated and installed inside the packaging tube. The end of the packaging tube is sealed by a hemispherical plug, and an inner tube is eccentrically arranged on the surface of the hemispherical plug. The acquisition head slides inside the inner tube through an elastic tube assembly. The movement posture of the acquisition head within the inner tube includes axial sliding and axial rotation. The angle of axial rotation of the acquisition head along the inner tube is less than 360°. By integrating the stimulation electrodes and the acquisition head, and utilizing the arc-shaped elastic posture of the acquisition head, dynamic and diversified acquisition is achieved through axial sliding and axial rotation, improving acquisition quality. The optimized structure achieves axial sliding and axial rotation while avoiding the problem of inaccurate repositioning caused by the twisting of the elastic wire.

Description

Technical Field

[0001] This invention relates to the field of stimulation acquisition technology, specifically a stimulation and acquisition device. Background Technology

[0002] Electrophysiological techniques use electrodes to precisely apply external stimulation pulses to tissues while simultaneously collecting electrophysiological response data from the target area to assess tissue function. In common clinical procedures, physicians often need to alternate between stimulation and data acquisition in the same area. However, due to the limited functionality of current devices, which separate data acquisition and stimulation, frequent instrument changes or electrode repositioning are necessary. This is not only time-consuming and labor-intensive but can also lead to regional localization errors, thus affecting the effectiveness of experiments or treatments.

[0003] If the collection and stimulation are designed in an integrated manner, and the collection location is fixed, it is not conducive to the operator adjusting the collection location to find the best collection point. Summary of the Invention

[0004] The purpose of this invention is to provide a stimulation and acquisition device that integrates a stimulation electrode with an acquisition head. Utilizing an arc-shaped, elastic acquisition head, dynamic and diverse acquisition is achieved through axial sliding and rotation, providing doctors with more acquisition points and enabling the search for optimal acquisition locations, thus improving acquisition quality. The optimized structure achieves axial sliding and rotation while avoiding the problem of inaccurate repositioning caused by elastic wire twisting, resulting in more precise control, lower manufacturing difficulty, and more accurate acquisition, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A stimulation and acquisition device includes an encapsulation tube, an acquisition head, and a stimulation electrode. The acquisition head and the stimulation electrode are integrated and installed inside the encapsulation tube, and the end of the encapsulation tube is encapsulated by a hemispherical plug.

[0007] The hemispherical plug has an inner tube eccentrically arranged on its surface. The acquisition head slides inside the inner tube through an elastic tube assembly. The movement of the acquisition head inside the inner tube includes axial sliding and axial rotation. The angle of rotation of the acquisition head along the axial direction of the inner tube is less than 360°. When the acquisition head slides out along the axial direction of the inner tube, it moves in an arc away from the apex of the hemispherical plug.

[0008] The elastic tube assembly consists of a shaped elastic wire and a double-lumen tube. The tail end of the collection head is fixedly connected to a connecting part, which is fixedly connected to the inside of one cavity of the double-lumen tube. The other cavity of the double-lumen tube is filled with a shaped elastic wire, and the end of the shaped elastic wire is bent when not under stress.

[0009] As a further embodiment of the present invention: the internal insertion tube includes a contact tube and a sliding positioning tube, the contact tube is used to house the acquisition head, the size of the contact tube is larger than the size of the acquisition head, and the sliding positioning tube is used to house the dual-lumen tube.

[0010] As a further embodiment of the present invention: two symmetrically distributed limiting posts are fixedly connected to the inner wall of the sliding positioning tube near the acquisition head. Two sets of motion limiting components are installed on the outer wall of the double-lumen tube. The motion limiting components consist of an end protrusion disposed at the port of the double-lumen tube and a plurality of olive-shaped protrusions equidistantly disposed behind the end protrusion. The two sides of the end protrusion have straight sections, and two adjacent straight sections form a limiting channel that cooperates with the limiting posts.

[0011] As a further embodiment of the present invention: the olive-shaped protrusion has two arc-shaped guide surfaces, and an arc-shaped chamfer is provided at the arc-shaped guide surface on the bending side of the shaping elastic wire. A diamond-shaped channel is formed between the end protrusion and the olive-shaped protrusion, and between the two olive-shaped protrusions. The straight part is connected to multiple diamond-shaped channels along the axial direction of the double-lumen tube.

[0012] As a further aspect of the present invention: the sampling head has an arc-shaped surface, and when the sampling head moves in an arc shape away from the vertex of the hemispherical plug, the arc-shaped surface comes into contact with the tissue.

[0013] As a further embodiment of the present invention: the collecting head is housed inside the contact tube, and the top of the collecting head is flush with the apex of the hemispherical plug.

[0014] As a further embodiment of the present invention: the surface of the hemispherical plug is provided with a hole, the contact tube and the sliding positioning tube are inserted into the interior of the encapsulation tube through the hole, and the space between the stimulation electrode and the contact tube and the sliding positioning tube is filled with insulating filler, which includes insulating adhesive and insulating ceramic.

[0015] As a further embodiment of the present invention: the front end of the encapsulation tube is an open bevel, the stimulation electrode and the acquisition head are exposed to the outside, and the top end of the acquisition head is flush with the end face of the stimulation electrode at the bevel of the encapsulation tube.

[0016] As a further embodiment of the present invention: the diameter of the contact tube is such that the acquisition head rotates inside the contact tube, the diameter of the sliding positioning tube at the end away from the acquisition head is reduced, and the reduced end of the sliding positioning tube is slidably sealed with the double-lumen tube.

[0017] A control component is provided at the end of the dual-lumen tube. The control component is fixedly connected to the dual-lumen tube and drives the dual-lumen tube to rotate or slide along the axial direction of the sliding positioning tube.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This technical solution integrates the stimulation electrode with the acquisition head. Utilizing the arc-shaped elastic acquisition head, dynamic and diverse acquisition is achieved through axial sliding and rotation, providing doctors with more acquisition points and enabling the search for the optimal acquisition point, thus improving acquisition quality. The optimized structure achieves axial sliding and rotation while avoiding the problem of inaccurate repositioning caused by elastic wire twisting, resulting in more precise control, lower manufacturing difficulty, and more accurate and effective acquisition. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A three-dimensional schematic diagram of a stimulation and acquisition device;

[0022] Figure 2 A schematic front cross-sectional view of a stimulation and acquisition device;

[0023] Figure 3 A schematic diagram illustrating the use of a stimulation and acquisition device;

[0024] Figure 4 This is a schematic diagram showing the interaction between an elastic tube assembly and a collection head in a stimulation and collection device.

[0025] Figure 5 for Figure 4 A comparative diagram showing the view from above and below;

[0026] Figure 6 A schematic diagram of a shaped elastic filament in a stimulation and collection device;

[0027] Figure 7 This is a schematic diagram of another form of a stimulation and acquisition device;

[0028] In the diagram: 1. Encapsulation tube; 11. Hemispherical plug; 2. Inner tube; 21. Contact tube; 22. Sliding positioning tube; 221. Limiting post; 3. Acquisition head; 31. Arc-shaped surface; 32. Connecting part; 4. Stimulating electrode; 5. Shaped elastic wire; 6. Dual-lumen tube; 7. Motion limiting component; 71. End protrusion; 711. Straight part; 72. Olive-shaped protrusion; 721. Arc-shaped guide surface; 722. Arc-shaped chamfer; 8. Control component. Detailed Implementation

[0029] Please see Figures 1-7 Example 1:

[0030] This embodiment aims to enable the acquisition head 3 to change acquisition points within a certain range within the acquisition area, adjust to the optimal acquisition area, and improve the accuracy of the acquired data.

[0031] To clearly illustrate the structure, the figures in the attached diagram have been enlarged for easier observation.

[0032] The existing technology includes: a packaging tube 1, a collection head 3, and a stimulation electrode 4. The collection head 3 and the stimulation electrode 4 are integrated and installed inside the packaging tube 1, and the end of the packaging tube 1 is sealed by a hemispherical plug 11.

[0033] This embodiment improves the acquisition device with a plug at the front end of the encapsulation tube 1. The end of the encapsulation tube 1 is encapsulated by a hemispherical plug 11. The stimulation electrode 4 is in contact with the hemispherical plug 11, or the stimulation electrode 4 can protrude from the top of the hemispherical plug 11. The stimulation electrode 4 is located at the apex of the arc surface of the hemispherical plug 11. The specific situation can be adjusted according to the requirements. The technical solution needs to change the position of the acquisition head 3.

[0034] An inner tube 2 is eccentrically arranged on the surface of the hemispherical plug 11. The acquisition head 3 slides inside the inner tube 2 through the elastic tube assembly. The movement of the acquisition head 3 inside the inner tube 2 includes axial sliding and axial rotation. The angle of rotation of the acquisition head 3 along the axial direction of the inner tube 2 is less than 360°. When the acquisition head 3 slides out along the axial direction of the inner tube 2, the acquisition head 3 moves in an arc away from the apex of the hemispherical plug 11.

[0035] The elastic tube assembly consists of a shaped elastic wire 5 and a double-lumen tube 6. The tail end of the sampling head 3 is fixedly connected to a connecting part 32, which is fixedly connected to one cavity of the double-lumen tube 6. The other cavity of the double-lumen tube 6 is filled with the shaped elastic wire 5, and the end of the shaped elastic wire 5 is bent when not under stress.

[0036] The axis of the inner tube 2 is parallel to that of the encapsulation tube 1. The port of the inner tube 2 is eccentrically positioned on the surface of the hemispherical plug 11, and the sampling head 3 is housed inside the inner tube 2. In the elastic tube assembly, the shaped elastic wire 5 is in a bent state when not under stress. The shaped elastic wire 5 is housed inside the inner tube 2. Because the inner tube 2 radially limits the shaped elastic wire 5, the shaped elastic wire 5 is in a straight line or a state with an increased bending radius inside the inner tube 2, and undergoes elastic deformation.

[0037] When the acquisition head 3 moves axially within the inner cannula 2, please refer to [the relevant documentation]. Figure 3 The acquisition head 3 will move away from the vertex of the hemispherical plug 11, at which point the linear distance between the acquisition head 3 and the stimulation point increases. The acquisition head 3 is moving in a straight line relative to the stimulation point.

[0038] When the acquisition head 3 moves axially within the inner cannula 2, please refer to [the relevant documentation]. Figure 3 The acquisition head 3 will move towards the side closer to the vertex of the hemispherical plug 11. At this time, the straight distance between the tissue acquired by the acquisition head 3 and the stimulation point is shortened, and the acquisition head 3 is located in another direction from the stimulation point, thus forming dynamic and diversified acquisition, providing doctors with more acquisition points.

[0039] The purpose of using a shaped elastic wire 5 and a double-lumen tube 6 in the elastic tube assembly is to reduce manufacturing difficulty. The double-lumen tube 6 can be mass-produced using molds. One lumen of the double-lumen tube 6 is used to connect to the connector 32, and the other lumen of the double-lumen tube 6 is inserted into the shaped elastic wire 5. The shaped elastic wire 5 drives the double-lumen tube 6 to bend. At this time, the connector 32 does not need to consider elastic characteristics, but only signal transmission characteristics, such as conductors transmitting electrical signals or other transmission methods. The shaped elastic wire 5 can use its own elasticity to drive the double-lumen tube 6 to bend, and the double-lumen tube 6 drives the extension and displacement of the acquisition head 3. Since the shaped elastic wire 5 does not come into contact with tissue, the material selection for the shaped elastic wire 5 is wider. The shaped elastic wire 5 only needs to have elastic recovery capability and be in a bent posture under static conditions.

[0040] The inner tube 2 includes a contact tube 21 and a sliding positioning tube 22. The contact tube 21 is used to house the acquisition head 3. The size of the contact tube 21 is larger than that of the acquisition head 3. The sliding positioning tube 22 is used to house the double-lumen tube 6. The diameter of the contact tube 21 is sufficient for the acquisition head 3 to rotate inside the contact tube 21. The diameter of the sliding positioning tube 22 is reduced at the end away from the acquisition head 3, and the reduced end of the sliding positioning tube 22 is slidably sealed with the double-lumen tube 6.

[0041] The contact tube 21 collects the acquisition head 3, and the sliding positioning tube 22 houses the double-lumen tube 6. The double-lumen tube 6 is either straight or bent with a large diameter within the sliding positioning tube 22. The size of the contact tube 21 is larger than that of the acquisition head 3, allowing the acquisition head 3 to be in a bent position within the contact tube 21. When the acquisition head 3 rotates axially around the center of the inner insertion tube 2, the acquisition head 3 rotates within the contact tube 21. Because the acquisition head 3 is in a bent position, the trajectory of the contact point after rotation is close to a circle, thus forming multi-point contact within a smaller area.

[0042] Two symmetrically distributed limiting posts 221 are fixedly connected to the inner wall of the sliding positioning tube 22 near the acquisition head 3. Two sets of motion limiting components 7 are installed on the outer wall of the double-lumen tube 6. The motion limiting component 7 consists of an end protrusion 71 set at the port of the double-lumen tube 6 and multiple olive-shaped protrusions 72 equidistantly set behind the end protrusion 71. The two sides of the end protrusion 71 have straight surfaces 711. The two adjacent straight surfaces 711 form a limiting channel that cooperates with the limiting posts 221. The olive-shaped protrusion 72 has two arc-shaped guide surfaces 721. An arc-shaped chamfer 722 is opened at the arc-shaped guide surface 721 on the bending side of the shaping elastic wire 5. The end protrusion 71 and the olive-shaped protrusion 72 form interconnected diamond-shaped channels, and the straight surfaces 711 connect multiple diamond-shaped channels along the axial direction of the double-lumen tube 6.

[0043] To ensure sealing, the double-lumen tube 6 and the sliding positioning tube 22 employ a sliding seal. When the double-lumen tube 6 twists, the bending of the shaping elastic wire 5 causes sliding friction between the double-lumen tube 6 and the sliding positioning tube 22, which can easily lead to deformation of the double-lumen tube 6's bending posture. To ensure that the posture of the double-lumen tube 6 is fixed each time it is reset, a motion limiting component 7 is provided. The motion limiting component 7 is actually a multi-protrusion mechanism, which can be directly integrally molded by a mold to meet processing requirements. A limiting post 221 is provided at the end of the sliding positioning tube 22. Under normal circumstances, the limiting post 221 enters the straight part 711 through the channel between two adjacent arc-shaped guide surfaces 721, and is limited by the straight part 711 and the limiting post 221 to prevent the double-lumen tube 6 from twisting. When the double-lumen tube 6 twists, it moves into the sliding positioning tube 22. The arc-shaped guide surface 721 contacts the limiting post 221 and, under the influence of continuous tension, the double-lumen tube 6 gradually rotates until the limiting post 221 reaches between two adjacent arc-shaped guide surfaces 721, eventually reaching the straight section 711. At this point, the double-lumen tube 6 is in its initial posture. The purpose of the arc-shaped chamfer 722 is to allow for the bending posture of the double-lumen tube 6 through the arc surface.

[0044] Additional note: To reduce the deformation caused by friction in the torsional posture of the double-lumen tube 6, the overall length can be shortened.

[0045] Furthermore, a rhomboid channel is formed between the two olive-shaped protrusions 72. The long axis of the rhomboid channel can provide displacement space for the limiting post 221 to rotate axially along the sliding positioning tube 22. As mentioned above, the axial rotation angle of the acquisition head 3 is less than 360°. The rhomboid channel not only satisfies the angular rotation of the dual-cavity tube 6, but also enables positioning and resetting. This problem is solved in the simplest way, reducing the processing difficulty.

[0046] The sampling head 3 has an arc-shaped surface 31. When the sampling head 3 moves in an arc shape away from the vertex of the hemispherical plug 11, the arc-shaped surface 31 comes into contact with the tissue.

[0047] Since the sampling head 3 needs to bend and protrude, the curved surface 31 can avoid scratching damage to the tissue.

[0048] The sampling head 3 is housed inside the contact tube 21, and the top of the sampling head 3 is flush with the top of the hemispherical plug 11.

[0049] The stimulation electrode 4 is located at the top of the hemispherical plug 11, or it can protrude from the top of the hemispherical plug 11. Upon initial use, the acquisition head 3 and the stimulation electrode 4 make synchronous contact with the tissue. If the parameters initially acquired by the acquisition head 3 meet the requirements, no adjustment of the acquisition head 3 is necessary.

[0050] The surface of the hemispherical plug 11 has a hole. The contact tube 21 and the sliding positioning tube 22 are inserted into the encapsulation tube 1 through the hole. The space between the stimulation electrode 4 and the contact tube 21 and the sliding positioning tube 22 is filled with insulating filler, which includes insulating glue and insulating ceramic.

[0051] The advantage of having a hole in the hemispherical plug 11 is its simple processing. The contact tube 21 and sliding positioning tube 22 are inserted into the encapsulation tube 1 through the hole. Insulating glue or insulating ceramic is filled between the encapsulation tube 1 and the stimulation electrode 4, thus fixing the inner tube 2, encapsulation tube 1, and stimulation electrode 4. Furthermore, the contact tube 21 and sliding positioning tube 22 can also be obtained in a tubeless structure. For example, a core rod is inserted into the hole of the hemispherical plug 11, insulating glue is directly injected into the encapsulation tube 1, and after the glue cures, the core rod is removed, thus obtaining the contact tube 21 and sliding positioning tube 22. This allows for a smaller size design for the encapsulation tube 1 and reduces processing difficulty.

[0052] The front end of the encapsulation tube 1 is an open bevel, exposing the stimulation electrode 4 and the acquisition head 3 to the outside, and the top of the acquisition head 3 is flush with the end face of the stimulation electrode 4 at the bevel of the encapsulation tube 1.

[0053] Figure 7 In the puncture configuration, the acquisition head 3 and stimulation electrode 4 are both exposed to the outside. At this time, the acquisition head 3 can rotate inside the contact tube 21, and can still provide multiple acquisition points within a small range.

[0054] A control component 8 is provided at the end of the double-lumen tube 6. The control component 8 is fixedly connected to the double-lumen tube 6. The control component 8 drives the double-lumen tube 6 to rotate or slide along the sliding positioning tube 22 axially.

[0055] The control component 8 can be a rotating wheel or other handheld component. The control component 8 is connected to the dual-lumen tube 6. The position of the acquisition head 3 can be adjusted by rotating the control component 8 or sliding it along the axis of the inner tube 2.

[0056] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A stimulation and acquisition device, comprising an encapsulation tube (1), an acquisition head (3), and a stimulation electrode (4), characterized in that: The acquisition head (3) and the stimulation electrode (4) are integrated and installed inside the encapsulation tube (1), and the end of the encapsulation tube (1) is encapsulated by a hemispherical plug (11); The hemispherical plug (11) has an inner tube (2) eccentrically arranged on its surface. The acquisition head (3) slides inside the inner tube (2) through an elastic tube assembly. The movement of the acquisition head (3) inside the inner tube (2) includes axial sliding and axial rotation. The angle of rotation of the acquisition head (3) along the axial direction of the inner tube (2) is less than 360°. When the acquisition head (3) slides out along the axial direction of the inner tube (2), the acquisition head (3) moves in an arc away from the apex of the hemispherical plug (11). The elastic tube assembly consists of a shaped elastic wire (5) and a double-lumen tube (6). The tail end of the collection head (3) is fixedly connected to a connecting part (32). The connecting part (32) is fixedly connected to one cavity of the double-lumen tube (6). The other cavity of the double-lumen tube (6) is filled with a shaped elastic wire (5). The end of the shaped elastic wire (5) is bent when not under stress.

2. The stimulation and acquisition device according to claim 1, characterized in that: The internal insertion tube (2) includes a contact tube (21) and a sliding positioning tube (22). The contact tube (21) is used to house the acquisition head (3). The size of the contact tube (21) is larger than that of the acquisition head (3). The sliding positioning tube (22) is used to house the dual-lumen tube (6).

3. The stimulation and acquisition device according to claim 2, characterized in that: The sliding positioning tube (22) has two symmetrically distributed limiting posts (221) fixedly connected to the inner wall of one end near the acquisition head (3). The outer wall of the double cavity tube (6) is equipped with two sets of motion limiting components (7). The motion limiting component (7) consists of an end protrusion (71) set at the port of the double cavity tube (6) and a plurality of olive-shaped protrusions (72) equidistantly set behind the end protrusion (71). The two sides of the end protrusion (71) have straight parts (711). The two adjacent straight parts (711) form a limiting channel that cooperates with the limiting post (221).

4. The stimulation and acquisition device according to claim 3, characterized in that: The olive-shaped protrusion (72) has two arc-shaped guide surfaces (721). An arc-shaped chamfer (722) is provided at the arc-shaped guide surface (721) on the curved side of the shaping elastic wire (5). A diamond-shaped channel is formed between the end protrusion (71) and the olive-shaped protrusion (72), and between the two olive-shaped protrusions (72). The straight part (711) is connected to multiple diamond-shaped channels along the axial direction of the double-lumen tube (6).

5. The stimulation and acquisition device according to claim 1, characterized in that: The collection head (3) has an arc-shaped surface (31). When the collection head (3) moves in an arc shape away from the vertex of the hemispherical plug (11), the arc-shaped surface (31) comes into contact with the tissue.

6. The stimulation and acquisition device according to claim 2, characterized in that: The collecting head (3) is housed inside the contact tube (21), and the top of the collecting head (3) is flush with the top of the hemispherical plug (11).

7. The stimulation and acquisition device according to claim 2, characterized in that: The surface of the hemispherical plug (11) has a hole. The contact tube (21) and the sliding positioning tube (22) are inserted into the interior of the encapsulation tube (1) through the hole. The stimulation electrode (4) is filled with insulating filler between the contact tube (21) and the sliding positioning tube (22). The insulating filler includes insulating glue and insulating ceramic.

8. The stimulation and acquisition device according to claim 1, characterized in that: The front end of the encapsulation tube (1) is an open bevel, the stimulation electrode (4) and the acquisition head (3) are exposed to the outside, and the top of the acquisition head (3) is flush with the end face of the stimulation electrode (4) at the bevel of the encapsulation tube (1).

9. The stimulation and acquisition device according to claim 2, characterized in that: The diameter of the contact tube (21) is such that the acquisition head (3) rotates inside the contact tube (21), the diameter of the sliding positioning tube (22) at the end away from the acquisition head (3) is reduced, and the reduced end of the sliding positioning tube (22) is slidably sealed with the double-lumen tube (6).

10. The stimulation and acquisition device according to claim 2, characterized in that: The end of the double-lumen tube (6) is provided with a control component (8), which is fixedly connected to the double-lumen tube (6). The control component (8) drives the double-lumen tube (6) to rotate or slide along the sliding positioning tube (22) axially.

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