Device for measuring intracranial blood flow

Abstract

A device for measuring intracranial blood flow comprises a first flexible metal electrode and a second flexible metal electrode, the first flexible metal electrode is fixedly embedded in the middle of a first silica gel sheet, and the second flexible metal electrode is fixedly embedded in the middle of a second silica gel sheet; a flexible ultrasonic probe array is installed between the first flexible metal electrode and the second flexible metal electrode, and the two sides of the flexible ultrasonic probe array are connected with the first flexible metal electrode and the second flexible metal electrode respectively. A flexible connector is arranged between the first silica gel sheet and the second silica gel sheet; and the outer side of the flexible connector is connected with external data processing equipment through a data transmission line. The device overcomes the defects in the prior art, is tightly attached to an operation area of a patient after the osteoclavicular decompression operation during use, can dynamically monitor the blood vessel and blood perfusion condition of the brain in the operation area in real time for a long time, forms a visual cerebral perfusion function diagram, and is convenient for observing the postoperative condition of the patient more visually and conveniently.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a device for measuring intracranial blood flow. Background Art

[0002] In neurosurgery, decompressive craniectomy is commonly used to treat increased intracranial pressure and cerebral edema caused by craniocerebral trauma, spontaneous cerebral hemorrhage, etc. The existing technology lacks a device that can monitor brain blood vessels and blood perfusion in a long-term, real-time, and dynamic manner. Therefore, clinical evaluation can only rely on cranial CT for postoperative evaluation, but CT cannot monitor brain blood flow in real time. CT and other imaging examinations can only provide brain blood flow during a single examination and cannot perform long-term dynamic monitoring; each CT examination requires manual operation, which increases the workload of medical staff; it is impossible to generate a continuous and intuitive brain perfusion function map, making it difficult to quickly judge the patient's postoperative recovery. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the utility model provides a device for measuring intracranial blood flow, which overcomes the shortcomings of the existing technology and has a reasonable design. When in use, it can be tightly attached to the surgical area of ​​the patient after craniotomy decompression surgery, and can perform long-term real-time dynamic monitoring of the brain blood vessels and blood perfusion in the surgical area, forming an intuitive cerebral perfusion function map, which is convenient for more intuitive and convenient observation of the patient's postoperative condition.

[0004] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] A device for measuring intracranial blood flow, comprising a first flexible metal electrode and a second flexible metal electrode, wherein the first flexible metal electrode is fixedly embedded in the middle of a first silicone sheet, and the second flexible metal electrode is fixedly embedded in the middle of a second silicone sheet;

[0006] A flexible ultrasonic probe array is fixedly installed between the first flexible metal electrode and the second flexible metal electrode, the upper and lower sides of the flexible ultrasonic probe array are respectively connected to the first flexible metal electrode and the second flexible metal electrode, and the first silicone sheet is fixedly connected to the second silicone sheet;

[0007] A flexible connector is also fixedly installed between the first silicone sheet and the second silicone sheet, and the pins of the flexible connector are electrically connected to the flexible ultrasound probe array, the first flexible metal electrode and the second flexible metal electrode respectively, and the pins of the flexible connector are connected to an external data processing device through a data transmission line.

[0008] Preferably, the outer surface of the first silicone sheet and / or the second silicone sheet is coated with a medical adhesive, and a protective film layer is adhered to the outside of the medical adhesive.

[0009] Preferably, the outer surface of the first flexible metal electrode and / or the second flexible metal electrode is coated with conductive gel.

[0010] Preferably, the flexible connector includes a flexible substrate, a pin array is fixedly mounted on the surface of the flexible substrate, the pins in the pin array are respectively connected to the corresponding first flexible metal electrode, the second flexible metal electrode or the flexible ultrasound probe array; a pin-type interface is fixedly mounted on the outer side of the flexible substrate, each pin of the pin array is respectively connected to each pin input end of the pin-type interface through a wire, and each pin output end of the pin-type interface is connected to each wire of the data transmission line.

[0011] Preferably, the outer surface of each pin in the pin array is covered with an insulating layer.

[0012] Preferably, the first silicone sheet and the second silicone sheet are connected and fixed by thermal compression.

[0013] Preferably, the first flexible metal electrode and the second flexible metal electrode are respectively embedded between the first silicone sheet and the second silicone sheet by pre-embedded molding.

[0014] Compared with the prior art, the device for measuring intracranial blood flow of the utility model has the following beneficial effects: the utility model uses a silicone sheet to tightly attach the flexible metal electrode and the flexible ultrasonic probe array to the surgical area after the patient's craniotomy decompression surgery, and controls the flexible ultrasonic probe array to transmit ultrasonic signals and receive reflected ultrasonic signals through an external data processing device to convert them into electrical signals, and transmit the electrical signals to the external data processing device for data processing, thereby realizing real-time dynamic monitoring of the brain blood vessels and blood perfusion in the surgical area, and forming a continuous and intuitive brain perfusion function map, which is convenient for long-term real-time observation of the patient's postoperative condition, timely adjustment of the diagnosis and treatment plan, and improvement of the patient's postoperative prognosis. In addition, the patient's brain electrical activity signal can be collected through the flexible metal electrode, and the ultrasonic signal and the brain electrical activity signal can be combined with the external data processing equipment for analysis, providing more comprehensive information for diagnosis and treatment. The flexible metal electrode can ensure good coupling between the flexible ultrasonic probe array and the surgical area of ​​the head, and the measurement accuracy is high. In addition, the flexible metal electrode and the flexible ultrasound probe array are both flexible and bendable, and can adapt to the shape of the surgical area on the head during application and operation, so that the surgical area of ​​the patient and the flexible ultrasound probe array are not squeezed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a three-dimensional exploded structure of the utility model;

[0016] Figure 2 A schematic diagram of the structure of the flexible connector in the utility model;

[0017] Figure 3 A schematic diagram of the use state of the utility model;

[0018] Description of the numbers in the figure:

[0019] 1. First flexible metal electrode; 2. Second flexible metal electrode; 3. First silicone sheet; 4. Second silicone sheet; 5. Flexible ultrasound probe array; 6. Flexible connector; 61. Flexible substrate; 62. Pin array; 63. Pin interface; 7. Data transmission line. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings and embodiments of the present invention.

[0021] Embodiment 1, as Figure 1-3 As shown, a device for measuring intracranial blood flow includes a first flexible metal electrode 1 and a second flexible metal electrode 2, wherein the first flexible metal electrode 1 is fixedly embedded in the middle of a first silicone sheet 3, and the second flexible metal electrode 2 is fixedly embedded in the middle of a second silicone sheet 4;

[0022] A flexible ultrasonic probe array 5 is fixedly installed between the first flexible metal electrode 1 and the second flexible metal electrode 2, and the upper and lower side surfaces of the flexible ultrasonic probe array 5 are respectively connected to the first flexible metal electrode 1 and the second flexible metal electrode 2, and the first silicone sheet 3 is fixedly connected to the second silicone sheet 4 for wrapping and fixing the flexible ultrasonic probe array 5; a flexible connector 6 is also fixedly installed between the first silicone sheet 3 and the second silicone sheet 4, and the pins of the flexible connector 6 are respectively electrically connected to the flexible ultrasonic probe array 5, the first flexible metal electrode 1 and the second flexible metal electrode 2; the pins of the flexible connector 6 are connected to an external data processing device (not shown in the figure) through a data transmission line 7 arranged on the outside.

[0023] The working principle of the utility model is: when in use, the first silicone sheet 3 or the second silicone sheet 4 is tightly applied to the surgical area after the patient's craniotomy decompression surgery to ensure that the first flexible metal electrode 1 or the second flexible metal electrode 2 is in good contact with the skin. Then the data transmission line 7 is connected to the external data processing device. Then the external data processing device is started, and the flexible ultrasonic probe array 5 is controlled by the external data processing device to transmit ultrasonic signals and receive reflected ultrasonic signals, and the reflected ultrasonic signals are converted into electrical signals and transmitted to the external data processing device for data processing, so as to realize real-time dynamic monitoring of the cerebral blood vessels and blood perfusion in the surgical area, and form a continuous and intuitive cerebral perfusion function map, so as to facilitate more intuitive and convenient observation of the patient's postoperative condition, so as to adjust the diagnosis and treatment plan in time, and help to better improve the patient's postoperative prognosis.

[0024] In addition, during use, the first flexible metal electrode 1 or the second flexible metal electrode 2 is in contact with the skin, and the first flexible metal electrode 1 or the second flexible metal electrode 2 can be used to collect the patient's EEG activity signal. The EEG activity signal can provide doctors with the patient's EEG activity status, thereby helping to evaluate the patient's neurological function. The EEG activity signal is transmitted to an external data processing device through a multi-pin header connector 6 for data processing. The external data processing device combines the ultrasonic signal and the EEG activity signal for analysis, which can provide more comprehensive information for diagnosis and treatment.

[0025] In addition, the first flexible metal electrode 1 or the second flexible metal electrode 2 is in contact with the skin, which can effectively ensure good coupling between the flexible ultrasound probe array 5 and the head, thereby improving measurement accuracy.

[0026] And because the first flexible metal electrode 1, the second flexible metal electrode 2 and the flexible ultrasonic probe array 5 are all flexible and bendable, the entire device has good adaptability during application and operation, thereby effectively protecting the patient's surgical area and the flexible ultrasonic probe array 5 from being squeezed.

[0027] In this embodiment, multiple devices of the present invention can be used simultaneously according to the size of the surgical area after the patient's decompressive craniectomy. Figure 3 As shown, multiple first silicone sheets 3 or second silicone sheets 4 are closely attached to the surgical area after the patient's decompressive craniectomy, thereby realizing the monitoring of intracranial blood flow in a larger area. When multiple devices are used in combination, each device can work independently without affecting each other, so as to ensure the accuracy and completeness of the monitoring.

[0028] Embodiment 2, as a further preferred embodiment of embodiment 1, the outer surface of the first silicone sheet 3 and / or the second silicone sheet 4 is coated with a medical adhesive, and a protective film layer is adhered to the outside of the medical adhesive, and the protective film layer is used to protect the medical adhesive. When the device is applied to the surgical area after the patient's craniectomy decompression surgery, the protective film layer on the outer surface of the first silicone sheet 3 or the second silicone sheet 4 is directly torn off, and the first silicone sheet 3 or the second silicone sheet 4 can be directly closely attached to the skin through the medical adhesive, ensuring that the device is stably attached during long-term monitoring and reducing interference caused by the movement of the device. In addition, in this embodiment, the surface of the first silicone sheet 3 and the second silicone sheet 4 is also provided with air holes to ensure that the skin in the surgical area breathes, reduce allergic or inflammatory reactions, and improve patient comfort.

[0029] Embodiment 3, as a further preferred embodiment of embodiment 1, the outer surface of the first flexible metal electrode 1 and / or the second flexible metal electrode 2 is coated with a conductive gel. The conductive gel can enhance the conductivity and fit between the skin and the first flexible metal electrode 1 or the second flexible metal electrode 2, while reducing irritation to the patient's skin.

[0030] Embodiment 4, as a further preferred solution of embodiment 1, the flexible connector 6 includes a flexible substrate 61, the flexible substrate 61 is made of polyimide material, and the thickness is 0.1mm-0.2mm; a pin array 62 is fixedly installed on the surface of the flexible substrate 61, and the pins in the pin array 62 are respectively connected to the corresponding first flexible metal electrode 1, the second flexible metal electrode 2 or the flexible ultrasound probe array 5; a pin interface 63 is fixedly installed on the outside of the flexible substrate 61, each pin of the pin array 62 is connected to each pin input end of the pin interface 63 through a wire, and each pin output end of the pin interface 63 is connected to each wire of the data transmission line 7, and the outer surface of each pin in the pin array 62 is coated with an insulating layer. By using multiple pins to transmit signals in parallel, ultrasonic signals, bioelectric signals, control signals and power signals can be transmitted simultaneously, thereby improving signal transmission efficiency. In addition, the flexible substrate 61 is made of polyimide material, so that the entire flexible connector 6 can be adaptively bent without affecting its performance. Thereby adapting to the curved shape of the patient's head. The outer surface of each pin in the pin array 62 is covered with an insulating layer, which can effectively prevent unnecessary electrical crosstalk between the pins and ensure clear and accurate signal transmission.

[0031] Embodiment 5, as a further preferred embodiment of embodiment 1, the first silicone sheet 3 and the second silicone sheet 4 are connected and fixed by heat pressing, which can effectively ensure the firm connection between the first silicone sheet 3 and the second silicone sheet 4, realize the stable fixation of the flexible ultrasound probe array 5, and further ensure that the stability and accuracy of the device can be maintained during the movement of the patient's head.

[0032] Embodiment 6, as a further preferred solution of embodiment 1, the first flexible metal electrode 1 and the second flexible metal electrode 2 are respectively embedded in the middle of the first silicone sheet 3 and the second silicone sheet 4 by pre-embedded molding. Pre-embedded molding can accurately embed the flexible metal electrode 1 and the second flexible metal electrode 2 into the first silicone sheet 3 and the second silicone sheet 4, so that the electrodes and the silicone sheet are seamlessly fitted, further improving the durability and reliability of the overall device.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for measuring intracranial blood flow, characterized in that: It comprises a first flexible metal electrode (1) and a second flexible metal electrode (2), wherein the first flexible metal electrode (1) is fixedly embedded in the middle of a first silicone sheet (3), and the second flexible metal electrode (2) is fixedly embedded in the middle of a second silicone sheet (4); A flexible ultrasonic probe array (5) is fixedly mounted between the first flexible metal electrode (1) and the second flexible metal electrode (2); the upper and lower sides of the flexible ultrasonic probe array (5) are respectively connected to the first flexible metal electrode (1) and the second flexible metal electrode (2); and the first silicone sheet (3) is fixedly connected to the second silicone sheet (4); A flexible connector (6) is also fixedly mounted between the first silicone sheet (3) and the second silicone sheet (4); pins of the flexible connector (6) are electrically connected to the flexible ultrasound probe array (5), the first flexible metal electrode (1) and the second flexible metal electrode (2), respectively; and the pins of the flexible connector (6) are connected to an external data processing device via a data transmission line (7).

2. The device for measuring intracranial blood flow according to claim 1, characterized in that: The outer surface of the first silicone sheet (3) and / or the second silicone sheet (4) is coated with a medical adhesive, and a protective film layer is adhered to the outside of the medical adhesive.

3. The device for measuring intracranial blood flow according to claim 1, characterized in that: The outer surface of the first flexible metal electrode (1) and / or the second flexible metal electrode (2) is coated with a conductive gel.

4. The device for measuring intracranial blood flow according to claim 1, characterized in that: The flexible connector (6) comprises a flexible substrate (61), a pin array (62) is fixedly mounted on the surface of the flexible substrate (61), the pins in the pin array (62) are respectively connected to the corresponding first flexible metal electrode (1), the second flexible metal electrode (2) or the flexible ultrasound probe array (5), a pin-type interface (63) is fixedly mounted on the outer side of the flexible substrate (61), each pin of the pin array (62) is respectively connected to a pin input end of the pin-type interface (63) via a wire, and each pin output end of the pin-type interface (63) is connected to a wire of a data transmission line (7).

5. The device for measuring intracranial blood flow according to claim 4, characterized in that: The outer surface of each pin in the pin array (62) is covered with an insulating layer.

6. The device for measuring intracranial blood flow according to claim 1, characterized in that: The first silicone sheet (3) and the second silicone sheet (4) are connected and fixed by thermal compression.

7. The device for measuring intracranial blood flow according to claim 1, characterized in that: The first flexible metal electrode (1) and the second flexible metal electrode (2) are respectively embedded between the first silicone sheet (3) and the second silicone sheet (4) by pre-embedded molding.

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