A device for monitoring depth of anesthesia and cerebral oxygen saturation

Abstract

This invention discloses a device for monitoring anesthesia depth and cerebral oxygen saturation, relating to the field of medical device technology. It includes a nursing bed with a support plate on one side. An anesthesia box is slidably mounted on the support plate, and a monitoring box is mounted on one side of the anesthesia box. The anesthesia box contains an anesthesia cavity, with an open end facing the nursing bed. A cylinder for supporting the patient's head is located within the anesthesia cavity. Several sets of positioning grooves are arranged in a circular array on the cylinder wall, and convex arc-shaped airbags are positioned within these grooves. The arc-shaped airbags are connected to air cavities arranged in a ring on the outer wall of the cylinder. These air cavities are connected to an inflation mechanism, which supplies air to the air cavities, causing the arc-shaped airbags to inflate and thus support the patient's head. A monitor is mounted on the monitoring box facing the anesthesia box to monitor the anesthesia depth and cerebral oxygen saturation, ensuring the stability of various patient characteristics during surgery.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a device for monitoring anesthesia depth and cerebral oxygen saturation. Background Technology

[0002] In clinical medical practice, anesthesia is essential for ensuring the safety and comfort of patients during surgery. While local anesthesia is used in a few cases, general anesthesia is currently the most common method. General anesthesia requires maintaining an appropriate depth of anesthesia depending on the type of surgery. This avoids excessively deep or shallow anesthesia, as excessively deep anesthesia can lead to postoperative brain damage, circulatory depression, and other complications, while insufficient anesthesia may make it difficult to suppress harmful intraoperative stimuli (such as stress responses), causing harm to the patient. In large surgeries, a depth of anesthesia mismatched with the surgical stimuli can have even more serious consequences. Therefore, during surgery, it is necessary to monitor the patient's depth of anesthesia to prevent serious postoperative complications and to prevent mismatched anesthesia from severely impacting the patient's prognosis.

[0003] During surgery, the patient is unconscious under general anesthesia. When the patient experiences an imbalance between oxygen supply and demand, they cannot provide timely feedback to the doctor as they would when awake. Over time, this can damage the function of vital organs, thus affecting the patient's postoperative recovery. Therefore, cerebral oxygen saturation monitoring can monitor the oxygen supply and demand of certain brain tissues in real time, preventing serious postoperative complications caused by oxygen imbalance. Summary of the Invention

[0004] The purpose of this invention is to provide a device for monitoring anesthesia depth and cerebral oxygen saturation, thereby solving the following technical problems:

[0005] When patients are in a state of oxygen supply and demand imbalance, they cannot provide timely feedback to doctors as they would when they are awake. Over time, this can cause damage to the function of vital organs, thereby affecting the patient's postoperative recovery and increasing certain risks during the surgical procedure.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] An anesthesia depth and cerebral oxygen saturation monitoring device includes a nursing bed, a support plate on one side of the nursing bed, an anesthesia box slidably mounted on the support plate, a monitoring box on one side of the anesthesia box, an anesthesia cavity inside the anesthesia box, and an opening end facing the nursing bed.

[0008] The anesthesia chamber contains a cylinder for supporting the patient's head. Several positioning grooves are arranged in a circular array on the cylinder wall. A raised arc-shaped airbag is arranged in the positioning groove. The arc-shaped airbag is connected to an air cavity arranged in a ring on the outer wall of the cylinder. The air cavity is connected to an inflation mechanism.

[0009] Preferably, the bottom of the support plate is provided with a driving mechanism, which is used to drive the anesthesia box to move towards the nursing bed so that the patient's head can be inserted into the anesthesia cavity.

[0010] Preferably, the drive mechanism includes a drive housing located at the bottom of the support plate, a first screw rotatably arranged in the drive housing, the first screw being fixedly connected to the output end of a drive motor located on the outside of the drive housing, and a first nut connected to the monitoring box being screwed onto the first screw.

[0011] Preferably, the anesthesia box has a sealing door that is slidably arranged at the open end, and the sealing door is slidably connected to a slide rail arranged on the open end. The two sealing doors are respectively connected to a pushing mechanism that pushes them to slide in the slide rail.

[0012] Preferably, the pushing mechanism includes a second screw arranged opposite to the anesthesia box body, a second nut that is screwed on the second screw and fixedly connected to the sealing door, and a gear fixedly installed at the end of the second screw. A bracket is arranged opposite to the support plate, and a rack plate for meshing with the gear is arranged at the end of the bracket.

[0013] Preferably, a movable plate is slidably arranged on the nursing bed, wherein a support is provided at the bottom of the nursing bed, and a guide rod fixedly connected to the movable plate is slidably arranged between the supports, and a return spring is arranged on the guide rod.

[0014] Preferably, the inflation mechanism includes cylinders arranged opposite to each other on both sides of the anesthesia box. The cylinders are fixedly connected to the mounting plate, and the other end of the mounting plate is rotatably connected to a gear. A piston is arranged in the cylinder, and the piston is connected to an adjustment mechanism that drives it to reciprocate in the cylinder. An air inlet pipe is provided at one end of the cylinder, and an air delivery pipe is provided at the other end of the cylinder.

[0015] Preferably, the gas delivery tube is connected to the gas delivery channel opened on the movable plate, and the bottom of the anesthesia box is provided with a corresponding connecting tube for connecting to the gas delivery channel, and the connecting tube is connected to the air chamber.

[0016] Preferably, the adjustment mechanism includes a turntable that is rotatably mounted on the mounting plate. The turntable is connected to a gear drive via a belt and a pulley. A pin is provided on one side of the upper edge of the turntable. The pin is movably embedded in a strip-shaped through groove in the push plate. The push plate is fixedly connected to the piston via a piston rod.

[0017] The beneficial effects of this invention are:

[0018] (1) When anesthetizing a patient, the patient first lies on the nursing bed and inserts the patient's head into the anesthesia chamber through the opening end. At the same time, the head is supported and positioned by the cylinder. Then, air is supplied to the air chamber through the inflation mechanism, causing the arc-shaped air bag to expand and support the patient's head. An anesthesia ventilator is installed inside the cylinder and the anesthesia ventilator cover is placed over the patient's mouth and nose to introduce anesthesia. At the same time, a monitoring instrument is installed on the side of the monitoring box facing the anesthesia box to monitor the depth of anesthesia and cerebral blood oxygen saturation, so as to ensure the stability of various characteristics of the patient during the operation.

[0019] (2) During the process of driving the anesthesia box towards the nursing bed, the driving mechanism of the present invention drives the sealing doors on both sides to move towards both sides at the same time, so that the opening end is in the open state, so that the patient's head can be inserted into the anesthesia cavity. After the treatment is completed, the driving mechanism drives the anesthesia box to move away from the nursing bed. At this time, the patient's head is removed from the anesthesia cavity. During this process, the driving mechanism pushes the sealing doors on both sides to move inward at the same time, so as to seal the opening end and prevent external bacteria and dust from entering the anesthesia cavity. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the structure of a device for monitoring anesthesia depth and cerebral oxygen saturation according to the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of a device for monitoring anesthesia depth and cerebral oxygen saturation according to the present invention. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the structure of a device for monitoring anesthesia depth and cerebral oxygen saturation according to the present invention. Figure 3 ;

[0024] Figure 4 This is a schematic diagram of the structure of a device for monitoring anesthesia depth and cerebral oxygen saturation according to the present invention. Figure 4 ;

[0025] Figure 5 This is a schematic diagram of the structure of a device for monitoring anesthesia depth and cerebral oxygen saturation according to the present invention. Figure 5 ;

[0026] Figure 6 This is a schematic diagram of the cylinder structure in the anesthesia depth and cerebral oxygen saturation monitoring device of the present invention;

[0027] Figure 7 This is a schematic diagram of the gas delivery channel in the anesthesia depth and cerebral oxygen saturation monitoring device of the present invention;

[0028] Figure 8 This is a schematic diagram of the arc-shaped airbag in the anesthesia depth and cerebral oxygen saturation monitoring device of the present invention;

[0029] Figure 9 This invention relates to a device for monitoring the depth of anesthesia and cerebral oxygen saturation. Figure 1 Enlarged structural diagram at point A in the middle.

[0030] In the diagram: 1. Nursing bed; 2. Monitoring box; 3. Support frame; 4. Connecting pipe; 5. Drive motor; 6. Second screw; 7. Turntable; 8. Drive housing; 9. Cylinder; 101. Support plate; 102. Movable plate; 103. Guide rod; 104. Return spring; 105. Support; 106. Gas supply channel; 201. Anesthesia chamber; 202. Sealing door; 203. Slide rail; 204. Anesthesia cavity; 3 01. Belt; 601. Second nut; 602. Rack plate; 603. Gear; 701. Pin; 702. Push plate; 703. Strip groove; 704. Piston rod; 705. Cylinder; 706. Air supply pipe; 707. Air inlet pipe; 708. Piston; 709. Mounting plate; 801. First screw; 802. First nut; 901. Positioning groove; 902. Arc-shaped airbag; 903. Air chamber. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1

[0033] Please see Figures 1-2 As shown, the present invention is a device for monitoring the depth of anesthesia and cerebral oxygen saturation, including a nursing bed 1, a support plate 101 arranged on one side of the nursing bed 1, an anesthesia box 201 slidably arranged on the support plate 101, a monitoring box 2 arranged on one side of the anesthesia box 201, an anesthesia cavity 204 provided inside the anesthesia box 201, and an opening end of the anesthesia box 201 facing the nursing bed 1.

[0034] In one embodiment of this example, the monitoring box 2 uses a bifrequency electroencephalogram (EEG) measuring instrument. Specifically, the bifrequency EEG mainly reflects the excitation or inhibition state of the cerebral cortex and information on sedation and hypnosis. It is not only closely related to normal physiological sleep, but can also effectively monitor the sedative component in the depth of anesthesia. An appropriate depth of anesthesia is beneficial to the patient's perioperative safety and reduces postoperative complications.

[0035] During general anesthesia, changes in electroencephalography (EEG) can reflect the degree of inhibition of the brain by anesthetic drugs. Biological indexing (BIS) is an analysis technique based on dual-spectrum EEG, which integrates multiple EEG parameters into a single index. These parameters include beta ratio, burst suppression ratio, relative synchronization of fast and slow waves, and 95% edge frequencies. In addition to analyzing the frequency spectrum and power spectrum of EEG, BIS also incorporates phase and harmonic analysis, containing both linear and nonlinear components while preserving the original EEG information, offering advantages in sensitivity and specificity.

[0036] BIS (Bipolar Ion Scale) can quantify the depth of sedation, ranging from 0 to 100. 100 represents complete wakefulness, and 0 represents complete cortical EEG inhibition. The smaller the value, the deeper the sedation, and vice versa. The recommended BIS for mild sedation is 65-85, and for deep sedation, it is 40-60 (deep sedation is often maintained during anesthesia). When BIS < 40, the primitive EEG burst is suppressed. Studies have shown that when BIS < 60, the command response disappears, and when BIS < 45, it may increase the 12-month mortality rate after surgery. During target-controlled infusion (TCI) propofol induction, a BIS between 45 and 60 suppresses the stress response and maintains hemodynamic stability.

[0037] The anesthesia cavity 204 contains a cylindrical body 9 for supporting the patient's head. Several sets of positioning grooves 901 are arranged in a circular array on the wall of the cylindrical body 9. In one embodiment, eight sets of positioning grooves 901 are provided. A raised, arc-shaped airbag 902 is arranged within each positioning groove 901. The arc-shaped airbag 902 is connected to an air cavity 903 arranged in a ring on the outer wall of the cylindrical body 9. The air cavity 903 is connected to an inflation mechanism. It can be explained that when anesthetizing a patient, the patient first lies on the nursing bed 1, and the head is placed... The patient's head is inserted into the anesthesia chamber 204 through the opening end, and the head is supported and positioned by the cylinder 9. Then, air is supplied to the air chamber 903 through the inflation mechanism, causing the arc-shaped air bag 902 to expand, thereby supporting the patient's head. An anesthesia ventilator is installed inside the cylinder 9, and the anesthesia ventilator cover is placed over the patient's mouth and nose to introduce anesthesia. At the same time, a monitor is installed on the side of the monitoring box 2 facing the anesthesia box 201 to monitor the patient's temperature and cerebral blood oxygen saturation to ensure the stability of the patient's various characteristics during the operation.

[0038] Please see Figure 3As a further embodiment of the present invention, the bottom of the support plate 101 is provided with a driving mechanism, which is used to drive the anesthesia box 201 to move toward the nursing bed 1 so that the patient's head can be inserted into the anesthesia cavity 204.

[0039] The driving mechanism includes a driving housing 8 disposed at the bottom of the support plate 101. A first screw 801 is rotatably disposed in the driving housing 8. The first screw 801 is fixedly connected to the output end of the driving motor 5 disposed on the outside of the driving housing 8. A first nut 802 connected to the monitoring box 2 is screwed on the first screw 801. Specifically, when the anesthesia box 201 is moved, the driving motor 5 is started to drive the first screw 801 to rotate. During the process of the first nut 802 moving on the first screw 801, the monitoring box 2 is moved, thereby realizing the synchronous driving of the anesthesia box 201 to move towards the nursing bed 1.

[0040] Please see Figure 4 The anesthesia chamber 201 has a sealing door 202 that is slidably arranged at the open end. The sealing door 202 is slidably connected to the slide rail 203 arranged on the open end. The two sealing doors 202 are respectively connected to the pushing mechanism that pushes them to slide in the slide rail 203. It should be noted that when the driving mechanism moves the anesthesia chamber 201 toward the nursing bed 1, the pushing mechanism drives the two sealing doors 202 to move to both sides at the same time, so that the open end is in the open state, so that the patient's head can be inserted into the anesthesia chamber 204. After the treatment is completed, the driving mechanism drives the anesthesia chamber 201 to move away from the nursing bed 1. At this time, the patient's head is removed from the anesthesia chamber 204. During this process, the pushing mechanism pushes the two sealing doors 202 to move inward at the same time to close the open end and prevent external bacteria and dust from entering the anesthesia chamber 204. Example

[0041] Based on Embodiment 1, the pushing mechanism includes a second screw 6 arranged opposite to the anesthesia box 201, a second nut 601 screwed onto the second screw 6 and fixedly connected to the sealing door 202, and a gear 603 fixedly installed at the end of the second screw 6. A bracket 3 is arranged opposite to the support plate 101, and a rack plate 602 for meshing with the gear 603 is arranged at the end of the bracket 3. It can be explained that during the process of driving the anesthesia box 201 to move towards the nursing bed 1, the gear 603 simultaneously meshes with the rack plate 602, causing the gear 603 to drive the second screw 6 to rotate. During the movement of the second screw 6, the second nut 601 drives the sealing door 202 to move to both sides. When the anesthesia box 201 is driven to move away from the nursing bed 1, the gear 603 rotates in the opposite direction, thereby causing the second nut 601 to drive the sealing door 202 to move inward to close the opening.

[0042] As a further embodiment of the present invention, please refer to... Figures 5-6 The nursing bed 1 is slidably provided with a movable plate 102. The bottom of the nursing bed 1 is provided with a support 105. A guide rod 103 fixedly connected to the movable plate 102 is slidably provided between the supports 105. A return spring 104 is provided on the guide rod 103. Specifically, in this embodiment, by providing a slidable movable plate 102 on the nursing bed 1, when the anesthesia box 201 is moved toward the nursing bed 1, the anesthesia box 201 can push the movable plate 102 to slide on the nursing bed 1 to push it out, so that the anesthesia box 201 is located on the nursing bed 1, so that the patient's head can be inserted into the anesthesia cavity 204. Example

[0043] Please see Figures 7-8 The inflation mechanism includes cylinders 705 arranged on both sides of the anesthesia box 201. Cylinders 705 are fixedly connected to mounting plates 709. The other end of mounting plates 709 is rotatably connected to gears 603. A piston 708 is arranged in cylinder 705. The piston 708 is connected to an adjustment mechanism that drives it to reciprocate in cylinder 705. An air inlet pipe 707 is provided at one end of cylinder 705. A one-way valve limited to air intake is arranged between air inlet pipe 707 and cylinder 705. An air delivery pipe 706 is provided at the other end of cylinder 705. A one-way valve limited to air exhaust is arranged between air delivery pipe 706 and cylinder 705. Air delivery pipe 706 is connected to an air delivery channel 106 opened on movable plate 102. A connecting pipe 4 for insertion into air delivery channel 106 is provided at the bottom of anesthesia box 201. The connecting pipe 4 is connected to air chamber 903.

[0044] It can be explained that during the process of the anesthesia box 201 being moved toward the nursing bed 1, the connecting pipe 4 at the bottom of the anesthesia box 201 is connected to the gas delivery channel 106 on the movable plate 102, so that the gas input to the gas delivery channel 106 is input into the air chamber 903 through the connecting pipe 4. When the anesthesia box 201 is moved away from the nursing bed 1, the connecting pipe 4 is separated from the gas delivery channel 106, and the gas in the arc-shaped air bag 902 is discharged.

[0045] Please see Figure 9 The adjustment mechanism includes a turntable 7 rotatably mounted on a mounting plate 709. The turntable 7 is connected to a gear 603 via a belt 301 and a pulley. A pin 701 is arranged on one side of the upper edge of the turntable 7. The pin 701 is movably embedded in a strip-shaped through groove 703 opened in a push plate 702. The push plate 702 is fixedly connected to a piston 708 via a piston rod 704. It can be explained that during the rotation of the gear 603, the turntable 7 is driven to rotate via the belt 301 and the pulley. The turntable 7 pushes the piston 708 to reciprocate in the cylinder 705 via the pin 701, the push plate 702, and the piston rod 704 to achieve the inflation effect.

[0046] The working principle of this invention is as follows: When anesthetizing a patient, the patient first lies on the nursing bed 1. The drive motor 5 is activated, driving the first screw 801 to rotate. As the first nut 802 moves along the first screw 801, it drives the monitoring box 2 to move, thus synchronously moving the anesthesia box 201 towards the nursing bed 1. The patient's head is inserted into the anesthesia chamber 204 through the opening, and the head is simultaneously supported and positioned by the cylinder 9. During the movement of the anesthesia box 201 towards the nursing bed 1, the gear 603 simultaneously meshes with the rack plate 602, causing the gear 603 to drive the second screw 6 to rotate. As the second nut 601 moves along the second screw 6, it drives the sealing door 202 to move to both sides. When the anesthesia box 201 moves towards the far... When the patient is moved away from the nursing bed 1, the gear 603 rotates in the opposite direction, which causes the second nut 601 to drive the sealing door 202 to move inward to close the opening. During the rotation, the gear 603 drives the turntable 7 to rotate through the belt 301 and pulley. The turntable 7 pushes the piston 708 to reciprocate in the cylinder 705 through the pin 701, push plate 702 and piston rod 704 to achieve the inflation effect and deliver air to the air chamber 903, causing the arc-shaped air bag 902 to expand and support the patient's head. The cylinder 9 is equipped with an anesthesia ventilator, and the anesthesia ventilator cover is placed over the patient's mouth and nose to administer anesthesia. At the same time, the monitoring box 2 is equipped with a monitor on the side facing the anesthesia box 201 to monitor the patient's temperature and cerebral blood oxygen saturation.

[0047] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0048] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A device for monitoring anesthesia depth and cerebral oxygen saturation, comprising a nursing bed (1), characterized in that, A support plate (101) is provided on one side of the nursing bed (1), and an anesthesia box (201) is slidably provided on the support plate (101). A monitoring box (2) is provided on one side of the anesthesia box (201). An anesthesia chamber (204) is provided inside the anesthesia box (201), and the anesthesia box (201) has an opening end facing the nursing bed (1). Among them, the anesthesia cavity (204) is provided with a cylinder (9) for supporting the patient's head. Several sets of positioning grooves (901) are arranged in a circular array on the cylinder wall (9). The positioning grooves (901) are provided with a convex arc-shaped airbag (902). The arc-shaped airbag (902) is connected to an air cavity (903) arranged in a ring on the outer wall of the cylinder (9). The air cavity (903) is connected to the inflation mechanism. The bottom of the support plate (101) is provided with a driving mechanism, which is used to drive the anesthesia box (201) to move towards the nursing bed (1); The drive mechanism includes a drive housing (8) arranged at the bottom of the support plate (101), a first screw (801) is rotatably arranged in the drive housing (8), the first screw (801) is fixedly connected to the output end of the drive motor (5) arranged on the outside of the drive housing (8), and a first nut (802) connected to the monitoring box (2) is screwed on the first screw (801). The anesthesia box (201) has a sealing door (202) that is slidably arranged at the open end. The sealing door (202) is slidably connected to the slide rail (203) arranged on the open end. The sealing doors (202) on both sides are respectively connected to the pushing mechanism that pushes them to slide in the slide rail (203). The pushing mechanism includes a second screw (6) arranged opposite to each other on the anesthesia box (201), a second nut (601) screwed on the second screw (6) and fixedly connected to the sealing door (202), and a gear (603) fixedly installed at the end of the second screw (6). A bracket (3) is arranged opposite to each other on the support plate (101), and a rack plate (602) for meshing with the gear (603) is arranged at the end of the bracket (3). The inflation mechanism includes cylinders (705) arranged opposite to each other on both sides of the anesthesia box (201). The cylinders (705) are fixedly connected to the mounting plate (709), and the other end of the mounting plate (709) is rotatably connected to the gear (603). A piston (708) is arranged in the cylinder (705). The piston (708) is connected to an adjustment mechanism that drives it to reciprocate in the cylinder (705). An air inlet pipe (707) is provided at one end of the cylinder (705), and an air delivery pipe (706) is provided at the other end of the cylinder (705). The adjustment mechanism includes a turntable (7) that is rotatably arranged on the mounting plate (709). The turntable (7) is connected to the gear (603) through a belt (301) and a pulley. A pin (701) is arranged on one side of the upper edge of the turntable (7). The pin (701) is movably embedded in the strip groove (703) opened in the push plate (702). The push plate (702) is fixedly connected to the piston (708) through the piston rod (704).

2. The anesthesia depth and cerebral oxygen saturation monitoring device according to claim 1, characterized in that, The nursing bed (1) is slidably provided with a movable plate (102). The bottom of the nursing bed (1) is provided with a support (105). The support (105) is slidably provided with a guide rod (103) fixedly connected to the movable plate (102) between the supports (105). A return spring (104) is provided on the guide rod (103).

3. The anesthesia depth and cerebral oxygen saturation monitoring device according to claim 1, characterized in that, The gas delivery tube (706) is connected to the gas delivery channel (106) opened on the movable plate (102), and the bottom of the anesthesia box (201) is provided with a connecting tube (4) for connecting to the gas delivery channel (106), and the connecting tube (4) is connected to the air chamber (903).

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