Pressure-adjustable craniocerebral protective cap

Abstract

The invention relates to the technical field of medical instruments, and provides a pressure-adjustable craniocerebral protective cap in order to solve the technical problems that bandaging after an existing craniocerebral operation cannot be adjusted in time according to craniocerebral pressure, and the pressure cannot be measured and accurately controlled, the pressure-adjustable craniocerebral protective cap comprises a cap body, an opening is formed in the cap body, the opening is of a folded edge design, and a plurality of through holes are formed in the surface of the cap body; an elastic bridle is arranged on the lower edge of the cap body and is used for adjusting the tightness degree of the cap body; the air bag penetrates through the through hole in the surface of the cap body, and the inner side of the air bag is communicated with a human craniocerebral defect area; the pressure adjusting structure is arranged on the outer side of the air bag, communicates with the interior of the air bag and is used for conducting adaptive adjustment when the pressure of the air bag changes. Self-adaptive adjustment can be carried out according to intracranial pressure changes, meanwhile, the device can be tightly attached to a craniocerebral defect area, and intracranial pressure fluctuation caused by factors such as external pressure changes or slight collision of the head is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a pressure-adjustable skull cap. Background Art

[0002] Neurosurgery is very common in cranial surgeries due to various reasons such as craniocerebral injury, brain tumor resection, and cerebral hemorrhage. Some patients will have skull defects after surgery. Once the skull is defective, the brain loses its complete protection and is not only susceptible to direct impact from external forces, causing secondary injuries, but also the balance of intracranial pressure will be disrupted, affecting the blood circulation in the brain and the normal circulation of cerebrospinal fluid, thereby adversely affecting the recovery of neurological function, and even threatening the patient's life in severe cases.

[0003] Application No. 202022759298.8 discloses a skull bone removal protective cap for neurosurgery, comprising an outer layer, an inner layer, a cylinder and a movable sleeve. The outer layer is provided with a groove, a threaded cylinder is embedded in the groove, a screw rod is threadedly connected to the threaded cylinder, the lower surface of the outer layer is fixedly connected to a first spring, the other end of the first spring is fixedly connected to the upper surface of the inner layer, the upper surface of the inner layer is fixedly connected to a bearing, and a rotating shaft is movably inserted in the bearing.

[0004] The above solution can adjust the internal space of the protective cap by adjusting the distance between the inner layer and the outer layer, making it easier for patients with different head circumferences to wear and use. However, the amount of pressure it exerts on the brain tissue depends on the doctor's experience and cannot be adjusted in time according to the intracranial pressure. Moreover, its pressure cannot be measured and accurately controlled. It is only effective for protruding brain tissue and is ineffective for those with mild brain tissue depression. Summary of the Invention

[0005] In response to the above problems, the present invention aims to provide a pressure-adjustable cranial protective cap that can adaptively adjust according to changes in intracranial pressure, and can closely fit the cranial defect area, thereby avoiding intracranial pressure fluctuations caused by external pressure changes or slight collisions to the head, and providing patients with reliable protection for the cranial protective cap. The main idea of ​​the technical solution adopted by the present invention is: the pressure-adjustable brain protection cap is composed of a cap body of adjustable size, an airbag connected to the brain defect area, and a pressure regulating structure that can adaptively adjust the airbag pressure changes. The pressure regulating structure contains a pressure regulating chamber divided into a balance chamber and a pressure relief chamber. The pressure is indicated by a pressure sensing mechanism, the pressure is relieved and an alarm is sounded at high pressure by the pressure relief mechanism, and the pressure is replenished at low pressure by the pressure replenishing mechanism, so as to achieve effective protection of the brain defect area and airbag pressure regulation.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A pressure-adjustable skull cap comprising: The cap body is provided with an opening, the opening is folded, and a plurality of through holes are opened on the surface; The air bag penetrates the through hole provided on the surface of the cap body, and the inner side is connected with the brain defect area of ​​the human body; The pressure regulating structure is arranged on the outside of the airbag and is connected to the inside of the airbag, and is used to make adaptive adjustments when the airbag pressure changes.

[0007] In order to separate the different functional areas of pressure regulation, functions such as pressure sensing, pressure relief and pressure replenishment can be carried out independently and orderly.

[0008] Furthermore, the pressure regulating structure includes: The pressure regulating chamber is divided into a balance chamber and a pressure relief chamber by a partition plate, and a communication hole communicating with the airbag is opened at the bottom of the balance chamber; A pressure sensing mechanism is provided inside the balance chamber and is used to indicate the magnitude of the pressure; The pressure relief mechanism includes a pressure relief transmission member and a pressure relief member, which is used to release part of the pressure under high pressure conditions; The pressure replenishing mechanism is arranged on one side of the pressure regulating chamber and is connected to the balance chamber for replenishing the required pressure under low pressure conditions.

[0009] In order to more intuitively present whether the pressure is in a low, normal or high pressure state, clear pressure information is provided to users so that they can take corresponding measures in time.

[0010] Furthermore, the pressure sensing mechanism includes: The guide rail is horizontally arranged inside the balance chamber and passes through the low-pressure warning area and the high-pressure warning area; The slider has a sliding groove at the bottom and is slidably connected to the guide rail and the inner wall of the balance chamber.

[0011] In order to relieve the airbag pressure in time when the airbag pressure is too high, the pressure relief transmission part cooperates with the pressure relief part to trigger the pressure relief process by moving the slider when the pressure is too high.

[0012] Furthermore, the pressure relief transmission element includes: a first elastic member, one end of which is connected to the slider and the other end of which is connected to the partition plate; The pressure relief trigger rod has one end connected to the slider and the other end sliding in the sliding hole on the partition plate, and is used to trigger the pressure relief part to release pressure.

[0013] Furthermore, the pressure relief member includes: The pressure relief channel is opened inside the pressure relief chamber, and a pressure relief pipe and an audible alarm pipe are respectively provided at both ends of the pressure relief channel, and the pressure relief pipe is connected to the interior of the airbag; A blocking channel is provided inside the pressure relief chamber and is arranged perpendicularly to the pressure relief channel. A plug is slidably provided inside the blocking channel. One end of the plug is connected to the sliding hole, and the other end is connected to the second elastic member.

[0014] In order to replenish the pressure in time when the airbag pressure is insufficient, and maintain effective protection for the brain defect area.

[0015] Furthermore, the pressure compensation mechanism includes: The pressure booster is provided on one side of the pressure regulating chamber, with an air filling hole on one side and an adjusting plate on the other side; The regulating rod is arranged to pass through the pressure boosting cylinder, wherein the portion located inside the pressure boosting cylinder is connected to the pressure boosting transmission member, and the portion located outside the pressure boosting cylinder is connected to the pressure boosting regulating member; The pressure compensating member is connected to the communicating channel and the pressure compensating cylinder and is used for triggering the pressure compensating transmission member to compensate for the pressure.

[0016] Furthermore, the pressure-compensating transmission element includes: A push plate is arranged on the adjusting rod, and a limit head is provided on one side of the push plate; One end of the third elastic member is connected to the push plate, and the other end is connected to the adjustment plate.

[0017] Furthermore, the pressure compensation regulating component includes: The knob is threadedly connected to the portion of the regulating rod located outside the pressure-boosting cylinder; The pressure regulator is slidably arranged on the adjustment rod and abuts against the knob to adjust different support forces.

[0018] Furthermore, the pressure-compensating component includes: The pressure compensation channel is provided at the outlet end of the communication channel and is connected to the pressure compensation cylinder. The pressure compensation is opened by sliding a pressure compensation blocking rod provided in the communication channel. The pressure compensating tube has one end connected to the outlet end of the pressure compensating channel and the other end communicated with the interior of the airbag.

[0019] The beneficial effects of the present invention are: 1. The pressure sensing mechanism of the present invention is provided with a guide rail and a slider slidably connected to the guide rail inside the balance chamber. At the same time, by dividing the pressure sensing mechanism into a low-pressure warning area and a high-pressure warning area, when the slider moves to the corresponding area, it can intuitively indicate the pressure in the airbag. Medical staff or users can quickly understand the pressure status by observing the position of the slider and take corresponding measures in time.

[0020] 2. The pressure relief mechanism of the present invention connects the pressure relief trigger rod with the slider. When the pressure is too high, the slider moves to drive the pressure relief trigger rod to trigger the pressure relief part. The setting of the pressure relief channel can effectively release the excessive pressure in the airbag. At the same time, the sound alarm tube can sound an alarm to remind relevant personnel to pay attention. The design of the blocking channel and the plug, combined with the second elastic part, ensures that the pressure relief channel is in a closed state under normal pressure, thereby improving the safety and reliability of the pressure relief mechanism.

[0021] 3. The pressure-compensating mechanism of the present invention opens the pressure-compensating channel by sliding a pressure-compensating blocking rod arranged in the connecting channel. Subsequently, the third elastic member pushes the push plate to the left, squeezing the gas inside the gas-compensating cylinder into the airbag through the one-way valve disc, and quickly replenishing the pressure in the airbag. At the same time, the supporting force is adjusted by the pressure-compensating adjusting member, thereby realizing the control of the gas-compensating speed and helping to judge the gas residue in the chamber, avoiding the rapid influx of a large amount of gas into the airbag at the moment the gas-compensating channel is opened, resulting in a sharp change in the airbag pressure, greatly improving the stability of the cranial and brain protection compression, and preventing harm to the patient due to sudden pressure changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 Schematic diagram of the connection between the airbag and the pressure regulating structure of the present invention; Figure 4 This is a schematic diagram of the pressure regulation structure of the present invention; Figure 5 For the present invention Figure 4 Schematic cross-section; Figure 6 This is a schematic diagram of the internal structure of the pressure regulating chamber of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram from top view; Figure 8 Schematic diagram of the positional relationship between the pressure sensing mechanism and the pressure relief mechanism of the present invention; Figure 9 A schematic diagram of the connection between the pressure sensing mechanism and the pressure relief transmission member of the present invention; Figure 10 Schematic diagram of the pressure replenishing mechanism of the present invention; Figure 11 For the present invention Figure 10 Schematic cross-section; Figure 12 This is a schematic diagram of the connection relationship between the pressure-compensating transmission component and the pressure-compensating adjustment component of the present invention; Figure 13 This is a schematic structural diagram of the pressure regulator of the present invention; Figure 14 This is a schematic diagram of the one-way valve disc structure of the present invention; Figure 15 This is a schematic diagram of the modeling of the present invention.

[0023] Among them: 1. Cap body; 101. Folding edge; 102. Through hole; 103. Elastic band; 2. Airbag; 3. Pressure regulating chamber; 301. Partition plate; 3011. Sliding hole; 302. Balance chamber; 3021. Connecting hole; 303. Pressure relief chamber; 304. Connecting channel; 4. Pressure sensing mechanism; 401. Guide rail; 402. Slider; 403. Low pressure warning area; 404. High pressure warning area; 5. Pressure relief mechanism; 6. Pressure relief transmission member; 601. First elastic member; 602. Pressure relief trigger lever; 7. Pressure relief member; 701. Pressure relief channel; 702. Pressure relief pipe ; 703, sound alarm tube; 704, blocking channel; 705, plug; 706, second elastic part; 8, pressure-compensating mechanism; 801, pressure-compensating cylinder; 8011, inflation hole; 8012, adjusting plate; 802, adjusting rod; 803, pressure-compensating transmission part; 8031, push plate; 8032, limit head; 8033, third elastic part; 804, pressure-compensating adjusting part; 8041, knob; 8042, pressure regulator; 9, pressure-compensating part; 901, pressure-compensating channel; 902, pressure-compensating blocking rod; 903, fourth elastic part; 904, one-way valve disc; 905, pressure-compensating pipe. DETAILED DESCRIPTION

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0025] The inventors have found that the current clinical method of applying pressure bandage after cranial surgery is to exert pressure on the brain defect area by adjusting the position of the elastic patch and the fastening sleeve. The amount of pressure exerted on the brain tissue depends on the doctor's experience and cannot be adjusted in time according to the intracranial pressure. Moreover, the pressure cannot be measured and accurately controlled. It is only effective for bulging brain tissue and is ineffective for those with mild brain depression.

[0026] Based on the above findings, this application proposes a pressure-adjustable cranial protection cap that can adaptively adjust according to changes in intracranial pressure, and at the same time can closely fit the cranial defect area, avoiding intracranial pressure fluctuations caused by external pressure changes or minor collisions to the head, and providing patients with a reliable cranial protection device.

[0027] Example See Figures 1-15The present application discloses a pressure-adjustable skull cap, comprising a cap body 1 made of a gel pad material to reduce pressure sores and discomfort that may be caused by long-term wearing. The cap body 1 is hemispherical as a whole to fit the contour of the human head. An opening is provided on it, and a folded edge 101 is designed at the opening. The width of the folded edge 101 is about 2-3 cm, which can be adjusted according to the size of the head contour of different patients, and can effectively prevent the edge of the opening from scratching the patient's skin. The lower edge of the cap body 1 is provided with an elastic band 103 by sewing or hot pressing. The cap body 1 can be firmly fixed to the patient's head through the contraction force of the elastic material, and the two ends of the elastic band 103 can be connected by Velcro.

[0028] It is worth mentioning that, by using the elastic band 103 and the cap body structure that can be folded in half, one only needs to open the folded cap body 1, quickly place it in the appropriate position on the head, and then use the elastic band 103 to simply fix it. This can achieve convenient wearing and reduce the impact of the wearing process on the wound. After the dressing is changed, the elastic band 103 can be used to quickly bandage the wound, shortening the dressing change and bandaging time.

[0029] Furthermore, the cap body 1 is provided with a plurality of through holes 102, which are mainly located in the human cranial defect area. The position and size of the through holes 102 can be adjusted according to actual needs. An airbag 2 is provided at the through hole 102. The inner side of the airbag 2 is connected to the human cranial defect area, and the outer side is connected to the pressure regulating structure. The airbag 2 is a circular sheet structure, and its diameter is slightly larger than the diameter of the through hole 102 on the surface of the cap body 1 so that it can be tightly embedded in the through hole 102. Preferably, the airbag 2 is embedded in the through hole 102 on the surface of the cap body 1 by interference fit to ensure a tight connection and prevent gas leakage.

[0030] It should be noted that the inner side of the airbag 2 is connected to the human brain defect area, and the outer side is connected to the pressure regulating structure. When the patient's head is subjected to a slight external impact or pressure change, the airbag 2 can absorb part of the impact force through its own elastic deformation, thereby reducing the damage to the brain. At the same time, the airbag 2 acts as a medium between the pressure regulating structure and the brain, transmitting the pressure changes to the pressure regulating structure, triggering the corresponding regulation mechanism, and making adaptive adjustments.

[0031] The pressure regulating structure includes a pressure regulating chamber 3 , a pressure sensing mechanism 4 , a pressure relief mechanism 5 and a pressure compensation mechanism 8 .

[0032] Specifically, the pressure regulating chamber 3 is used to monitor and regulate the pressure inside the airbag 2. The pressure regulating chamber 3 is divided into a balance chamber 302 and a pressure relief chamber 303 by a partition plate 301. The bottom of the balance chamber 302 is provided with a connecting hole 3021 connected to the interior of the airbag 2.

[0033] The pressure sensing mechanism 4 is disposed inside the balancing chamber 302 to indicate the magnitude of the pressure, and includes a guide rail 401 and a slider 402 .

[0034] The guide rail 401 is horizontally disposed within the balancing chamber 302, extending through the pre-defined low-pressure warning zone 403 and high-pressure warning zone 404 within the balancing chamber 302. A slider 402 is mounted on the guide rail 401. A slot is defined at the bottom of the slider 402, which slidably connects to the guide rail 401 and the inner wall of the balancing chamber 302.

[0035] It's worth noting that the pressure sensing mechanism 4 intuitively reflects the internal pressure of the airbag 2 by changing the position of the slider 402 on the guide rail 401. When the pressure in the airbag 2 changes, gas enters the balancing chamber 302 through the communication hole 3021, pushing the slider 402 to slide on the guide rail 401. Based on the position of the slider 402 (i.e., the low-pressure warning zone 403, the normal pressure zone, or the high-pressure warning zone 404), medical personnel or patients can promptly understand the pressure status of the airbag 2 and take appropriate measures.

[0036] Next, the pressure relief mechanism 5 includes a pressure relief transmission part 6 and a pressure relief part 7, which are used to release part of the pressure under high pressure conditions.

[0037] Specifically, the pressure relief transmission member 6 is arranged inside the balance chamber 302 on a side away from the communicating hole 3021 , and includes a first elastic member 601 and a pressure relief trigger rod 602 .

[0038] One end of the first elastic member 601 is fixedly connected to the slider 402, and the other end is fixedly connected to the partition plate 301. One end of the pressure relief trigger rod 602 is fixedly connected to the slider 402, and the other end is a free end, which can slide in the sliding hole 3011 on the partition plate 301, and pass through the sliding hole 3011 into the pressure relief chamber 303 to trigger the pressure relief member 7 to start the pressure relief function.

[0039] The pressure relief member 7 is disposed within the pressure relief chamber 303 and includes a pressure relief channel 701 and a blocking channel 704. The pressure relief channel 701 is vertically disposed within the pressure relief chamber 303, one end of which communicates with the interior of the airbag 2 via a pressure relief pipe 702, and the other end of which is connected to an audible alarm pipe 703. It should be noted that the audible alarm pipe 703 is actually a gas outlet pipe, internally provided with one or more structures similar to whistles or horns. When high-pressure gas passes through these structures at high speed, it causes the air column to vibrate, producing a loud sound.

[0040] The blocking channel 704 is provided within the pressure relief chamber 303 and is arranged perpendicularly to the pressure relief channel 701. A plug 705 is slidably disposed within the blocking channel 704. One end of the plug 705 is disposed on the side of the sliding hole 3011 away from the pressure relief trigger rod 602, and the other end is connected to a second elastic member 706. The other end of the second elastic member 706 is fixed to the inner wall of the pressure relief chamber 303. It should be noted that the plug 705 and the blocking channel 704 are precisely matched to ensure that the plug 705 can slide freely within the blocking channel 704 and has good sealing performance.

[0041] When the pressure inside airbag 2 is too high, gas enters the balancing chamber 302, pushing the slider 402 toward the partition plate 301. This drives the pressure relief trigger rod 602 through the sliding hole 3011 and pushes the plug 705, causing the plug 705 to compress the second elastic member 706 and open the pressure relief passage 701. At this point, some of the high-pressure gas inside the airbag 2 is discharged through the pressure relief pipe 702, and the audible alarm pipe 703 sounds an alarm, alerting medical staff or the patient to the excessive pressure. When the pressure drops to a normal range, the first elastic member 601 and the second elastic member 706 return the slider 402 and plug 705 to their original positions, closing the pressure relief passage 701.

[0042] Next, the pressure-compensating mechanism 8 includes a pressure-compensating cylinder 801 , an adjusting rod 802 , a pressure-compensating transmission member 803 , a pressure-compensating adjusting member 804 and a pressure-compensating member 9 , and is used to partially compensate for the pressure under low-pressure conditions.

[0043] Specifically, the pressure-boosting cylinder 801 is arranged on one side of the pressure regulating chamber 3 , and an inflation hole 8011 is provided on one side thereof for connecting to an external inflation device, and the cylinder wall on the other side is an adjustment plate 8012 with a plurality of adjustment holes.

[0044] The regulating rod 802 is provided through the pressure-compensating cylinder 801 . The portion of the regulating rod 802 located inside the pressure-compensating cylinder 801 is provided with a pressure-compensating transmission component 803 , and the portion of the regulating rod 802 located outside the pressure-compensating cylinder 801 is provided with a pressure-compensating regulating component 804 .

[0045] Furthermore, the pressure-compensating transmission member 803 includes a push plate 8031 ​​and a third elastic member 8033 .

[0046] Specifically, the push plate 8031 ​​passes through the adjusting rod 802 and is fixedly connected to the adjusting rod 802. A limit head 8032 is provided on the side of the push plate 8031 ​​away from the adjusting plate 8012. On the one hand, the limit head 8032 prevents the push plate 8031 ​​from falling off the adjusting rod 802, and on the other hand, prevents the third elastic member 8033 from squeezing the push plate 8031 ​​to press against the left side of the pressure-compensating cylinder 801, leaving a certain gap between the push plate 8031 ​​and the side of the air-compensating cylinder close to the inflation hole 8011 to ensure normal entry of gas.

[0047] One end of the third elastic member 8033 is connected to the push plate 8031, and the other end is connected to the adjusting plate 8012. It has three main functions: one is buffering and resetting. It buffers the force when the knob 8041 adjusts the pressure compensation, and helps the push plate 8031 ​​and the adjusting rod 802 to reset after the pressure compensation is completed; the second is to adjust the pressure compensation intensity. The degree of compression itself is changed by the knob 8041, thereby adjusting the force of the push plate 8031 ​​to push the pressure compensation blocking rod 902, and controlling the pressure compensation speed and intensity; the third is to maintain structural stability, connect the push plate 8031 ​​and the adjusting plate 8012, prevent the push plate 8031 ​​from shaking and deviating, and ensure the reliable operation of the pressure compensation mechanism 8.

[0048] Furthermore, the pressure compensation adjustment component 804 includes a knob 8041 and a pressure regulator 8042 .

[0049] Specifically, the knob 8041 is threadedly connected to one side of the regulating rod 802 located outside the pressure-compensating cylinder 801 , and the surface of the knob 8041 is provided with an anti-slip texture for easy operation.

[0050] The pressure regulator 8042 is an elastic plate, which is slidably set on the adjustment rod 802. It can be stuck in different slots of the adjustment hole and abut against the knob 8041. When the knob 8041 is rotated, it can drive the adjustment rod 802 to move, change the opening degree of the pressure regulator 8042, and thus adjust its supporting strength.

[0051] Furthermore, the pressure compensating component 9 includes a pressure compensating channel 901 , a pressure compensating blocking rod 902 and a pressure compensating pipe 905 .

[0052] Specifically, a pressure-compensating channel 901 is provided at the outlet of the connecting channel 304 and communicates with the pressure-compensating cylinder 801. Pressure-compensating is enabled by sliding a pressure-compensating blocking rod 902 disposed within the connecting channel 304. A one-way valve flap 904 is provided at the outlet of the pressure-compensating channel 901. The one-way valve flap 904 is in the shape of a circular funnel, with several cutouts extending outward from the center of the disc body. These cutouts impart a certain degree of elasticity and deformability to the valve flap. When gas pressure-compensating is initiated, the gas pressure acts on the surface of the valve flap, overcoming resistance such as friction between the valve flap and the valve seat, causing the valve flap to open around the valve seat (or deforming to open through the cutouts), thereby allowing fluid to pass smoothly. If the gas attempts to reverse flow, the reverse pressure presses the valve flap tightly against the valve seat, utilizing the sealing surface between the valve flap and the valve seat to prevent fluid backflow. The cutouts also help the valve flap fit more closely to the valve seat, enhancing the sealing effect.

[0053] The pressure-compensating blocking rod 902 is slidably disposed in the communicating channel 304 , and a fourth elastic member 903 is sleeved thereon. One end of the fourth elastic member 903 is fixedly connected to the inside of the communicating channel 304 .

[0054] One end of the pressure compensating tube 905 is connected to the outlet end of the pressure compensating channel 901 , and the other end is communicated with the interior of the airbag 2 .

[0055] In the initial state, the pressure-compensating blocking rod 902 will block the pressure-compensating channel 901 to prevent the gas from flowing freely when pressure compensation is not needed. When the pressure of the airbag 2 is low, the pressure-compensating blocking rod 902 will be pushed by the fourth elastic member 903 toward the balance chamber 302, thereby opening the gas-compensating channel. At this time, the third elastic member 8033 pushes the push plate 8031 ​​to move to the left, squeezing the gas in the pressure air cavity through the one-way valve flap 904 into the airbag 2, thereby supplementing the pressure of the airbag 2 to ensure that the airbag 2 can have a good fixing and restraining effect on the skull depression, maintain the integrity of the cranial cavity structure and the stability of the cranial cavity pressure. When the pressure of the airbag 2 reaches the design range, the pressure-compensating blocking rod 902 will close the gas-compensating channel to prevent the gas from continuing to flow into the airbag 2, avoid excessive pressure in the airbag 2, and ensure the stability of the cranial protection compression.

[0056] It is worth noting that before using the device, when inflating the airbag 2 through the inflation hole 8011, turn the knob 8041 to push the pressure regulator 8042 to the position of different adjustment holes to adjust the support strength of the pressure regulator 8042. As the support effect of the pressure regulator 8042 changes, when the knob 8041 and the adjustment rod 802 move to the left, different degrees of resistance will be generated, thereby realizing the control of the gas replenishment speed, avoiding the gas outflow speed being too fast when the pressure replenishment channel 901 is opened, preventing the pressure of the airbag 2 from changing sharply, ensuring the stability of the cranial protection compression, and at the same time adjusting the leakage length of the rod 802, which can also reflect the gas residue in the chamber.

[0057] Application Examples The present invention can be applied to patients with skull defects after cranial surgery. The cap body 1 is opened, and the airbag 2 is partially placed on the part of the patient's head with skull defects. The elastic band 103 on the lower edge of the cap body 1 is used to wrap around the head and fixed with Velcro for easy wearing. The airbag 2 is inflated through the inflation hole 8011, and then the pressure of the airbag 2 is monitored in real time through the pressure sensing mechanism 4. When the pressure of the airbag 2 changes, the gas enters through the connecting hole 3021 at the bottom of the balance chamber 302, pushing the slider 402 to slide on the guide rail 401. Medical staff or patients can grasp the pressure status of the airbag 2 based on the position of the slider 402 in the low-pressure warning area 403, the normal pressure area or the high-pressure warning area 404.

[0058] If the pressure inside airbag 2 is too high, gas enters the balancing chamber 302, pushing the slider 402 toward the partition plate 301. This drives the pressure relief trigger rod 602 through the sliding hole 3011, pushing the plug 705, compressing the second elastic member 706 and opening the pressure relief passage 701. Some of the high-pressure gas inside airbag 2 is discharged through the pressure relief pipe 702, while the audible alarm pipe 703 sounds an alarm indicating excessive pressure. Once the pressure drops to normal, the first elastic member 601 and the second elastic member 706 return the slider 402 and plug 705 to their original position, closing the pressure relief passage 701.

[0059] When the pressure in airbag 2 is low, the pressure-compensating blocking rod 902 is pushed toward the balancing chamber 302 by the fourth elastic member 903, opening the pressure-compensating passage 901. The third elastic member 8033 pushes the push plate 8031 ​​leftward, forcing the gas in the pressure chamber through the one-way valve 904 and into the airbag 2 via the pressure-compensating pipe 905, thus replenishing the pressure. When the pressure in airbag 2 reaches the designed range, the pressure-compensating blocking rod 902 closes the pressure-compensating passage to prevent excessive pressure.

[0060] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure-adjustable head protection cap, characterized in that: include: A cap body (1) is provided with an opening, wherein the opening is provided with a folded edge (101), and a plurality of through holes (102) are provided on the surface; The air bag (2) is inserted through the through hole (102) provided on the surface of the cap body (1), and the inner side is connected to the brain defect area of ​​the human body; The pressure regulating structure is arranged outside the airbag (2) and communicates with the interior of the airbag (2), and is used to make adaptive adjustments when the pressure of the airbag (2) changes.

2. The pressure-adjustable head protection cap according to claim 1, characterized in that: The pressure regulating structure includes: The pressure regulating chamber (3) is divided into a balancing chamber (302) and a pressure relief chamber (303) by a partition plate (301), and a communicating hole (3021) communicating with the airbag (2) is provided at the bottom of the balancing chamber (302); A pressure sensing mechanism (4) is provided inside the balancing chamber (302) and is used to indicate the magnitude of the pressure; A pressure relief mechanism (5), comprising a pressure relief transmission member (6) and a pressure relief member (7), for releasing part of the pressure under high pressure conditions; The pressure replenishing mechanism (8) is arranged on one side of the pressure regulating chamber (3) and is connected to the balancing chamber (302) for replenishing the required pressure under low pressure conditions.

3. The pressure-adjustable head protection cap according to claim 2, characterized in that: The pressure sensing mechanism (4) comprises: A guide rail (401) is horizontally arranged inside the balancing chamber (302) and passes through the low-pressure warning area (403) and the high-pressure warning area (404); The slider (402) has a sliding groove at the bottom and is slidably connected to the guide rail (401) and the inner wall of the balance chamber (302).

4. The pressure-adjustable head protection cap according to claim 3, characterized in that: The pressure relief transmission member (6) comprises: A first elastic member (601), one end of which is connected to the slider (402) and the other end of which is connected to the partition plate (301); The pressure relief trigger rod (602) has one end connected to the slider (402) and the other end sliding in the sliding hole (3011) on the partition plate (301) for triggering the pressure relief member (7) to release pressure.

5. The pressure-adjustable head protection cap according to claim 4, characterized in that: The pressure relief member (7) comprises: A pressure relief channel (701) is provided inside the pressure relief chamber (303), with a pressure relief pipe (702) and a sound alarm pipe (703) provided at both ends thereof, and the pressure relief pipe (702) is connected to the interior of the airbag (2); The blocking channel (704) is provided inside the pressure relief chamber (303) and is arranged perpendicularly to the pressure relief channel (701). A plug (705) is slidably provided inside the blocking channel (704). One end of the plug (705) is connected to the sliding hole (3011), and the other end is connected to the second elastic member (706).

6. The pressure-adjustable head protection cap according to claim 5, characterized in that: The pressure replenishing mechanism (8) comprises: A pressure-compensating cylinder (801) is provided on one side of the pressure-regulating chamber (3), with an air-filling hole (8011) provided on one side and an adjusting plate (8012) provided on the other side; An adjusting rod (802) is provided through the pressure-boosting cylinder (801), wherein the portion located inside the pressure-boosting cylinder (801) is connected to a pressure-boosting transmission member (803), and the portion located outside the pressure-boosting cylinder (801) is connected to a pressure-boosting adjusting member (804); The pressure-compensating member (9) is connected to the communicating channel (304) and the pressure-compensating cylinder (801) and is used to trigger the pressure-compensating transmission member (803) to compensate for pressure.

7. The pressure-adjustable head protection cap according to claim 6, characterized in that: The pressure-compensating transmission component (803) comprises: A push plate (8031) is provided on the adjustment rod (802), and a limit head (8032) is provided on one side of the push plate (8031); The third elastic member (8023) has one end connected to the push plate (8031) and the other end connected to the adjustment plate (8012).

8. The pressure-adjustable head protection cap according to claim 7, characterized in that: The pressure compensation regulating component (804) comprises: The knob (8041) is threadedly connected to the portion of the regulating rod (802) located outside the pressure-boosting cylinder (801); The pressure regulator (8042) is slidably disposed on the regulating rod (802) and abuts against the knob (8041) for adjusting different supporting forces.

9. The pressure-adjustable head protection cap according to claim 8, characterized in that: The pressure-compensating component (9) comprises: The pressure-compensating channel (901) is provided at the outlet end of the communication channel (304) and is in communication with the pressure-compensating cylinder (801). The pressure-compensating function is opened by sliding a pressure-compensating blocking rod (902) provided in the communication channel (304); The pressure compensation tube (905) has one end connected to the outlet end of the pressure compensation channel (901) and the other end communicated with the interior of the airbag (2).

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