A face mask and catheter combined oxygen supply structure switching device

Abstract

The application provides a mask and catheter combined oxygen supply structure switching device, belonging to the technical field of medical instruments. The device comprises a mounting shell, a switching mechanism, a control mechanism, a force storage mechanism, a time delay mechanism and a locking mechanism. The mounting shell is provided with an air inlet joint, a nasal oxygen tube joint and a mask joint. The air inlet joint is used for connecting an external oxygen source. The nasal oxygen tube joint is used for connecting a nasal oxygen tube and delivering low-flow oxygen. The mask joint is used for connecting an oxygen mask and delivering medium-high flow oxygen. The switching mechanism is sealingly installed in the mounting shell and comprises a switching valve core and an air storage bag. The switching valve core can move in the mounting shell. The device can avoid oxygen interruption during switching of the oxygen supply mode. Medical staff can complete oxygen flow adjustment and replacement of a patient oxygen delivery tool synchronously during automatic displacement of the valve core, realizing efficient cooperation of path switching, flow adjustment and tool replacement.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to a mask and catheter combined oxygen supply structure switching device. Background Technology

[0002] As a core means of treating respiratory diseases, the precise adaptation and safe switching of oxygen supply mode are directly related to the treatment effect and patient prognosis. In high-frequency operation scenarios such as emergency room and ICU, switching between nasal oxygen tube and mask is a key link in responding to the dynamic changes in the patient's condition. However, the existing oxygen supply mode and switching technology have significant clinical defects. Nasal oxygen cannulas contact the nasal mucosa through a nasal plug, with a maximum tolerance of 6L / min, suitable for mild to moderate hypoxia. Their advantages include comfort and no interference with eating or conversation. In contrast, face masks require a medium-to-high flow rate of 8-15L / min to maintain a stable oxygen concentration of 60%-95% and avoid... Retention, suitable for scenarios such as acute hypoxemia; Current switching procedures cannot simultaneously avoid the risks of high-flow stimulation and oxygen supply interruption. If the flow rate is adjusted to high before the nasal cannula is removed from the patient, the high-speed airflow will directly impact the nasal vestibule mucosa, leading to dryness, erosion, and even bleeding. Traditional switching relies on disconnecting the nasal cannula, adjusting the flow rate, and then putting on a mask. Even with skilled medical staff, this can result in a 3-5 second oxygen supply gap. For patients with acute hypoxemia (such as...), <88%), this gap period may cause a sudden drop of 5% in blood oxygen saturation, exacerbating the risk of tissue hypoxia. However, if the switch is made directly to avoid interruption, it will cause the aforementioned high-flow stimulation problem. The current mainstream three-way valve switching structure in clinical practice only has basic access switching function. The oxygen therapy switching design involves three actions: access control, flow adjustment, and equipment replacement. When switching the existing three-way valve, it is necessary to manually adjust the flow rate before turning the valve (which can easily cause high flow stimulation), or close the access first and then adjust the flow rate (which can easily create oxygen supply gaps). Furthermore, it relies entirely on the experience of medical staff to judge the timing and sequence of operations, which can easily lead to operational errors in busy emergency scenarios. Therefore, there is an urgent need for an integrated mask and tubing combination oxygen supply structure switching device that can coordinate pathway switching, flow regulation and device adaptation. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, this application provides a mask and catheter combined oxygen supply structure switching device that can avoid oxygen interruption during the switching of oxygen supply modes and automatically switch to reserve operation time for medical staff.

[0005] This application provides a mask and tubing combined oxygen supply structure switching device, including a mounting shell, a switching mechanism, a control mechanism, a power storage mechanism, a delay mechanism, and a locking mechanism. The mounting shell houses an air inlet connector, a nasal oxygen tubing connector, and a mask connector. The air inlet connector connects to an external oxygen source, the nasal oxygen tubing connector connects to a nasal oxygen tubing and delivers low-flow oxygen, and the mask connector connects to an oxygen supply mask and delivers medium- to high-flow oxygen. The switching mechanism is sealed within the mounting shell and includes a switching valve core and a gas reservoir. The switching valve core is movable within the mounting shell, and this displacement switches the communication between the nasal oxygen tubing connector, the oxygen supply connector, and the gas reservoir. The device features a switching mechanism for oxygen supply via a nasal cannula or mask, and a control mechanism located on one side of the mounting housing and connected to the switching valve core for receiving operation commands and driving the switching valve core to move within the mounting housing. A power storage mechanism connected to the control mechanism stores rotational potential energy in advance and stably transfers this energy to the control mechanism during switching operations. A delay mechanism connected to the control mechanism extends the time for the power storage mechanism to transmit power to the control mechanism, achieving sequential coordination between flow regulation and channel switching. A locking mechanism engages with the control mechanism to lock the control mechanism in position, ensuring the device is in a stable state for nasal cannula or mask oxygen supply.

[0006] In some embodiments, the device further includes: an identification strip disposed on the outside of the housing and cooperating with the switching mechanism; a mounting frame, sealed and mounted on the mounting housing; an air inlet connector disposed on the top of the mounting frame and sealed and connected to an external oxygen supply source; a nasal cannula connector disposed on the outside side of the mounting frame and sealed and connected to the nasal cannula; two intermediate connectors, both disposed on the outside side of the mounting frame, serving as transitional connection components for pathway switching; and a mask connector disposed on the outside side of the mounting frame and sealed and connected to an oxygen delivery mask. The nasal cannula connector, the two intermediate connectors, and the mask connector are arranged sequentially along the length of the mounting frame.

[0007] In some embodiments, the switching mechanism includes: a sealing frame disposed inside the mounting frame to form a sealed guide space for the movement of the switching valve core; a switching valve core slidably embedded inside the sealing frame, the switching valve core having two independent gas delivery chambers, the gas delivery chambers being respectively connected to the nasal oxygen tube connector, the two intermediate connectors, and the mask connector; a sealing block fixedly disposed outside the sealing frame; a switching pin passing through the switching valve core, one end of the switching pin having an identification arrow, the identification arrow cooperating with the identification strip; and an air reservoir disposed outside the sealing frame and sealedly connected to the two intermediate connectors.

[0008] In some embodiments, the control mechanism includes: a short shaft, vertically disposed on one side of the mounting housing, the upper part of the short shaft having a hexagonal structure; a large gear, fixedly sleeved on the short shaft; a long shaft, vertically disposed inside the mounting frame, parallel to the short shaft; a small gear, fixedly sleeved on the long shaft, and the small gear meshing with the large gear; a helical groove post, fixedly sleeved on the side of the long shaft away from the small gear, with two helical grooves symmetrically formed on its outer side; a lifting frame, sleeved on the helical groove post, the other end of the lifting frame being fixedly connected to the switching pin; and two ball bearings, fixedly disposed on the inner wall of the lifting frame, the two ball bearings respectively embedded in the helical grooves corresponding to the helical groove post and capable of sliding along the grooves.

[0009] In some embodiments, the energy storage mechanism includes: a limiting seat, fixedly disposed on one side of the top of the mounting frame; a sliding sleeve, having an internal hexagonal receiving cavity, adapted to the hexagonal structure on the upper part of the short shaft and slidably sleeved on the short shaft; a spiral spring, one end of which is fixedly connected to the outer wall of the sliding sleeve; and an energy storage cap, slidably disposed on the limiting seat and fixedly connected to the other end of the spiral spring. The limiting seat is provided with a plurality of limiting blocks, and the outer side of the energy storage cap is provided with a plurality of limiting grooves, the limiting grooves being adapted to the corresponding limiting blocks.

[0010] In some embodiments, the delay mechanism includes: a fixed base, coaxially disposed inside the mounting housing with the short shaft; a rubber block, fixedly disposed inside the fixed base and coaxially sleeved on the end of the short shaft away from the power storage cap; a tapered column, embedded inside the rubber block, the rubber block having a tapered groove for accommodating the tapered column; and a screw, passing through the mounting housing and threadedly engaged with the mounting housing, the end of the screw being connected to the tapered column.

[0011] In some embodiments, the locking mechanism includes: a rotating shaft rotatably disposed on the mounting frame, the rotating shaft having a helical groove; a locking tooth fixedly disposed on the outside of the rotating shaft, the locking tooth being capable of meshing with the large gear; a torsion spring sleeved on the rotating shaft and located between the rotating shaft and the outer wall of the mounting frame; and a pressing rod slidably mounted on the limiting seat, the input end of the pressing rod abutting against the power-accumulating cap, the output end of the pressing rod being able to be embedded in the helical groove of the rotating shaft and slide along the groove.

[0012] In some embodiments, the power storage knob is provided with a rotation direction indicator on its outer side.

[0013] In some embodiments, the nasal oxygen tube connector, the two intermediate connectors, and the mask connector are all sealed and connected to the interior of the mounting housing.

[0014] Compared with the prior art, the technical solution provided in this application includes at least the following technical effects: This application provides a mask and catheter combined oxygen supply structure switching device that avoids oxygen interruption during oxygen supply mode switching and automatically switches to allow medical staff sufficient operation time. The device uses a reservoir bag to increase the oxygen flow rate during the switching process from nasal cannula to mask without interrupting oxygen supply, preventing high-flow oxygen from impacting the nasal cavity. It also provides temporary oxygen supply during switching, eliminating short-term oxygen supply gaps and preventing a sudden drop in blood oxygen saturation in patients with acute hypoxemia. The delay mechanism coordinates flow regulation and pathway switching, pre-setting the flow rate before slow switching to prevent high-flow airflow from directly impacting the nasal mucosa and causing dryness, erosion, and other damage. Simultaneously, the device integrates a power storage, switching, and locking structure. Medical staff complete the automatic tubing switching through power storage. During switching, the delay mechanism extends the power transmission time through damping, allowing the switching valve core to move automatically and smoothly at a preset speed, providing sufficient operation window for medical staff. During the automatic valve core displacement, medical staff can simultaneously complete oxygen flow regulation and patient oxygen delivery tool replacement operations, achieving efficient coordination of pathway switching, flow regulation, and tool replacement. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a mask and tubing combined oxygen supply structure switching device according to some embodiments of this application; Figure 2 This is a schematic diagram of the structure of the mounting shell and mounting frame according to some embodiments of this application; Figure 3 This is a schematic diagram of the mounting frame and various connectors in some embodiments of this application; Figure 4 This is a schematic diagram of the mounting frame and air reservoir in some embodiments of this application; Figure 5 This is a schematic diagram of the structure of the sealing frame according to some embodiments of this application; Figure 6 This is a schematic diagram of the switching mechanism in some embodiments of this application; Figure 7 This is a schematic diagram of the structure of the switching valve core in some embodiments of this application; Figure 8 This is a schematic diagram of the three states of the switching valve core in some embodiments of this application; Figure 9 This is a schematic diagram of the control mechanism in some embodiments of this application; Figure 10 This is a schematic diagram of the structure of the lifting frame according to some embodiments of this application; Figure 11This is a schematic diagram of the planar structure of the control mechanism in some embodiments of this application; Figure 12 This is a schematic diagram of the structure of the power-storing screw cap and short shaft according to some embodiments of this application; Figure 13 This is one of the exploded views of the energy storage mechanism in some embodiments of this application; Figure 14 This is a second exploded view of the energy storage mechanism according to some embodiments of this application; Figure 15 This is a schematic diagram of the delay mechanism in some embodiments of this application; Figure 16 This is a schematic diagram of the structure of the large gear and locking mechanism in some embodiments of this application; Figure 17 This is a schematic diagram of the locking mechanism in some embodiments of this application.

[0016] in, Figures 1 to 17 The correspondence between the reference numerals and component names in the attached drawings is as follows: 110. Mounting housing; 111. Identification strip; 120. Mounting frame; 121. Air inlet connector; 122. Nasal oxygen cannula connector; 123. Intermediate connector; 124. Mask connector 200. Switching mechanism; 210. Sealing frame; 220. Switching valve core; 230. Sealing block; 240. Switching pin; 250. Air reservoir; 300. Control mechanism; 310. Short shaft; 320. Large gear; 330. Long shaft; 340. Small gear; 350. Screw groove column; 360. Lifting frame; 361. Ball bearing; 400. Power storage mechanism; 410. Limiting seat; 420. Sliding sleeve; 430. Scroll spring; 440. Power storage cap; 500. Delay mechanism; 510. Fixing base; 520. Rubber block; 530. Conical column; 540. Screw; 600, Locking mechanism; 610, Rotating shaft; 620, Locking tooth; 630, Torsion spring; 640, Pressing rod. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0019] The following reference Figures 1 to 15 This application describes a mask and catheter combined oxygen supply structure switching device provided according to some embodiments.

[0020] like Figures 1 to 15 As shown, the mask and tubing combined oxygen supply structure switching device provided according to some embodiments of this application includes a mounting shell 110, a switching mechanism 200, a control mechanism 300, a storage mechanism 400, a delay mechanism 500, and a locking mechanism 600. The mounting shell 110 is equipped with an air inlet connector 121, a nasal oxygen tubing connector 122, and a mask connector 124. The air inlet connector 121 is used to connect to an external oxygen source, the nasal oxygen tubing connector 122 is used to connect to a nasal oxygen tubing and deliver low-flow oxygen, and the mask connector 124 is used to connect to an oxygen supply mask and deliver medium- to high-flow oxygen. The switching mechanism 200 is sealed within the mounting shell 110 and includes a switching valve core 220 and an air reservoir 250. The switching valve core 220 can move within the mounting shell 110, and this displacement switches the nasal oxygen tubing connector 122. The device switches between the oxygen supply connector and the gas storage bag 250, and the gas storage bag 250 can temporarily store oxygen; the control mechanism 300 is located on one side of the mounting shell 110 and is connected to the switching valve core 220 for receiving operation commands and driving the switching valve core 220 to move within the mounting shell 110; the energy storage mechanism 400 is poweredly connected to the control mechanism 300 for pre-storing rotational potential energy and stably transmitting the potential energy to the control mechanism 300 during switching operations; the delay mechanism 500 is connected to the control mechanism 300 for extending the time for the energy storage mechanism 400 to transmit power to the control mechanism 300, thereby achieving time-coordinated flow regulation and channel switching; the locking mechanism 600 engages with the control mechanism 300 to lock the position of the control mechanism 300 so that the device is in a stable state of nasal cannula oxygen supply or mask oxygen supply.

[0021] In this embodiment, initially, the locking mechanism 600 is locked, the switching valve core 220 is constrained by the control mechanism 300, the air inlet 121 is closed, the air reservoir 250 is not inflated, and the external oxygen source enters the nasal oxygen tube connector 122 through the air inlet 121 and the chamber of the switching valve core 220, and then delivers low-flow oxygen to the patient through the nasal oxygen tube to achieve stable oxygen supply. When it is necessary to switch to high-flow oxygen delivery through the mask, the medical staff rotates the energy storage mechanism 400 to deform the energy storage component and store kinetic energy, and then presses down on the energy storage mechanism 400. At this time, the locking mechanism 600 is unlocked simultaneously, the energy storage mechanism 400 releases the stored potential energy and transmits the power to the control mechanism 300. At this time, the delay mechanism 500 is activated, which extends the power transmission time through the damping effect, causing the control mechanism 300 to drive the switching valve core 220 to slowly move downward, and the switching valve core 220 slowly moves downward, causing the nasal oxygen tube connector 122 to... 2. Connected to the top air inlet, during this process, medical staff can gradually increase the oxygen flow at the air inlet connector 121. At this time, the oxygen flow at the nasal oxygen tube connector 122 is diverted to the reservoir 250 by the top intermediate connector 123, achieving stable flow regulation. The switching valve core 220 continues to move down, gradually closing the nasal oxygen tube connector 122. At the same time, the two intermediate connectors 123 are connected by the reservoir 250, and the bottom intermediate connector 123 is connected to the mask connector 124. The oxygen stored in the reservoir 250 can be delivered to the mask connector 124. During this process, medical staff can switch the patient's nasal oxygen tube to an oxygen delivery mask. The switching valve core 220 is fully in place, and the air inlet connector 121 and the mask connector 124 are stably connected. The oxygen from the air inlet connector 121 is delivered to the oxygen supply mask through the upper intermediate connector 123, the reservoir 250, the lower intermediate connector 123, and the mask connector 124, completing the pathway switching.

[0022] In this design, the device uses the gas reservoir 250 to increase the oxygen flow rate during the switching process from the nasal cannula to the face mask while maintaining continuous oxygen supply. This prevents high-flow oxygen from impacting the nasal cavity and provides temporary oxygen supply during device switching, eliminating short-term oxygen supply gaps and preventing a sudden drop in blood oxygen saturation in patients with acute hypoxemia. The delay mechanism 500 coordinates the flow rate adjustment and pathway switching sequence, pre-setting the flow rate before slowly switching to prevent damage such as dryness and erosion caused by high-flow air directly impacting the nasal mucosa. Simultaneously, the device integrates a power storage, switching, and locking structure. Medical staff can automatically switch the tubing by storing power. During the switching process, the delay mechanism 500 extends the power transmission time through damping, allowing the switching valve core 220 to move automatically and smoothly at a preset speed. This provides ample operating time for medical staff, who can simultaneously adjust the oxygen flow rate and change the patient's oxygen delivery device during the automatic valve core displacement, achieving efficient coordination of pathway switching, flow rate adjustment, and device replacement.

[0023] In some possible embodiments, such as Figure 2 , Figure 3 As shown, it also includes: an identification strip 111, which is disposed on the outside of the housing and cooperates with the switching mechanism 200; a mounting frame 120, which is sealed and mounted on the mounting housing 110; an air inlet connector 121, which is disposed on the top of the mounting frame 120 and is sealed and connected to the external oxygen supply source; a nasal oxygen tube connector 122, which is disposed on the outside of the mounting frame 120 and is sealed and connected to the nasal oxygen tube; two intermediate connectors 123, which are both disposed on the outside of the mounting frame 120 and serve as transitional connection components for channel switching; and a mask connector 124, which is disposed on the outside of the mounting frame 120 and is sealed and connected to the oxygen delivery mask. The nasal oxygen tube connector 122, the two intermediate connectors 123, and the mask connector 124 are arranged sequentially along the length of the mounting frame 120.

[0024] In this embodiment, in the initial state, the sealed chamber of the mounting frame 120 ensures the sealed connection between the air inlet connector 121 and the nasal oxygen tube connector 122. The arrow on the label 111 points to the top. During switching, the switching valve core 220 slowly moves along the mounting frame 120, and the arrow on the label 111 moves synchronously to the middle area. At this time, the nasal oxygen tube connector 122 is connected to the upper intermediate connector 123. Medical staff can gradually increase the air inlet flow, and part of the oxygen flow is diverted to the intermediate connector 123. Then, the switching valve core 220 continues to move, sealing the nasal oxygen tube connector 122 and connecting it to the mask connector 124. At this time, medical staff can replace the patient's nasal oxygen tube with an oxygen delivery mask. The arrow on the label 111 points to the bottom. The label 111 allows medical staff to intuitively judge the current oxygen supply mode and switching progress, avoiding switching errors caused by blind operation.

[0025] In some possible embodiments, such as Figures 4 to 8 As shown, the switching mechanism 200 includes: a sealing frame 210, disposed inside the mounting frame 120, forming a sealed guide space for the movement of the switching valve core 220; the switching valve core 220, slidably embedded inside the sealing frame 210, having two independent gas delivery chambers, which can respectively communicate with the nasal oxygen tube connector 122, the two intermediate connectors 123, and the mask connector 124; a sealing block 230, fixedly disposed outside the sealing frame 210; a switching pin 240, passing through the switching valve core 220, with an identification arrow at one end, which cooperates with the identification strip 111; and an air reservoir 250, disposed outside the sealing frame 210 and sealedly connected to the two intermediate connectors 123.

[0026] In this embodiment, initially, the switching valve core 220 is positioned at the top of the sealing frame 210 under the constraint of the control mechanism 300. At this time, the top air delivery chamber inside the valve core connects to the air inlet connector 121 and the nasal oxygen tube connector 122, while the bottom air delivery chamber is sealed and the air reservoir 250 is not inflated. The external oxygen source enters the nasal oxygen tube connector 122 through the air inlet connector 121 and the top air delivery chamber. When switching is required, the switching valve core 220 slowly moves downward, and the top air delivery chamber of the valve core gradually connects the nasal oxygen tube connector 122 with the upper intermediate connector 123. At this time, medical staff simultaneously increase the oxygen supply flow rate, and a portion of the high-flow oxygen is injected through the upper intermediate connector 123. The reservoir 250 inflates, the switching valve core 220 continues to move downward, and the top gas delivery chamber gradually detaches from the nasal oxygen tube. Oxygen is delivered to the patient through the inlet connector 121, the top gas delivery chamber of the switching valve core 220, the upper intermediate connector 123, the reservoir 250, the lower intermediate connector 123, the bottom gas delivery chamber, and finally through the mask connector 124. The oxygen temporarily stored in the reservoir 250 is released synchronously during the switching process to replenish the oxygen leakage during mask switching. The medical staff simultaneously switch the patient's nasal oxygen tube to an oxygen delivery mask, and the valve core moves to the bottom position of the sealing frame 210. At this time, the inlet connector 121 is connected to the mask connector 124.

[0027] In some possible embodiments, such as Figures 9 to 12 As shown, the control mechanism 300 includes: a short shaft 310, vertically disposed on one side of the mounting housing 110, with the upper part of the short shaft 310 having a hexagonal structure; a large gear 320, fixedly sleeved on the short shaft 310; a long shaft 330, vertically disposed inside the mounting frame 120, parallel to the short shaft 310; a small gear 340, fixedly sleeved on the long shaft 330, and the small gear 340 meshes with the large gear 320; a spiral groove post 350, fixedly sleeved on the side of the long shaft 330 away from the small gear 340, with two spiral grooves symmetrically opened on its outer side; a lifting frame 360, sleeved on the spiral groove post 350, with the other end of the lifting frame 360 ​​fixedly connected to the switching pin 240; and two ball bearings 361, fixedly disposed on the inner wall of the lifting frame 360, with the two ball bearings 361 respectively embedded in the spiral grooves of the corresponding spiral groove posts 350 and able to slide along the grooves.

[0028] In this embodiment, medical staff store energy through the energy storage mechanism 400. After unlocking the locking mechanism 600, the energy storage mechanism 400 releases its kinetic energy, which is transmitted through the contact with the upper hexagonal structure of the short shaft 310, causing it to rotate clockwise around its own axis. This causes the large gear 320 fixed thereon to rotate clockwise synchronously. The large gear 320 drives the small gear 340 to rotate counterclockwise through tooth surface meshing. The rotation of the small gear 340 is transmitted to the long shaft 330, which in turn drives the helical column 350 to rotate counterclockwise synchronously. The two outer spiral grooves generate a spiral guiding effect as they rotate. The two balls 361 embedded in the spiral grooves roll along the spiral grooves under the thrust of the groove wall and move the lifting frame 360 ​​in a straight line. Since the lifting frame 360 ​​cannot rotate due to the constraint of the guide column of the mounting frame 120, the rotational motion of the spiral grooves is converted into the vertical downward motion of the lifting frame 360, which drives the switching pin 240 to move down synchronously. The switching pin 240 transmits the linear motion to the switching valve core 220, driving the valve core to move slowly down along the sealing frame 210.

[0029] In some possible embodiments, such as Figures 12 to 14 As shown, the power storage mechanism 400 includes: a limiting seat 410, which is fixedly disposed on one side of the top of the mounting frame 120; a sliding sleeve 420, which has a hexagonal cavity inside, which is adapted to the hexagonal structure on the upper part of the short shaft 310 and slidably disposed on the short shaft 310; a spiral spring 430, one end of which is fixedly connected to the outer wall of the sliding sleeve 420; and a power storage cap 440, which is slidably disposed on the limiting seat 410 and fixedly connected to the other end of the spiral spring 430. The limiting seat 410 is provided with multiple limiting blocks, and the power storage cap 440 is provided with multiple limiting grooves on the outer side, which are adapted to the corresponding limiting blocks.

[0030] In this embodiment, medical staff hold the energy-storing cap 440 and rotate it counterclockwise. As the rotation angle increases, the spiral spring 430 is gradually tightened, the degree of elastic deformation increases, and the rotational mechanical energy is converted into stored elastic potential energy. Pressing down on the energy-storing cap 440 causes it to slide down along the limiting block of the limiting seat 410. At this time, the limiting groove of the energy-storing cap 440 engages with the limiting block of the limiting seat 410. The spiral spring 430 then recovers its elastic potential energy, causing the sliding sleeve 420 to rotate clockwise. Since the hexagonal cavity of the sliding sleeve 420 is compatible with the upper hexagonal structure of the short shaft 310, the sliding sleeve 420 drives the short shaft 310 to rotate clockwise synchronously, converting the stored elastic potential energy into the rotational kinetic energy of the short shaft 310.

[0031] In some possible embodiments, such as Figure 15As shown, the delay mechanism 500 includes: a fixed base 510, which is coaxially disposed inside the mounting housing 110 with the short shaft 310; a rubber block 520, which is fixedly disposed inside the fixed base 510 and coaxially sleeved on the end of the short shaft 310 away from the power storage cap 440; a conical column 530, which is embedded inside the rubber block 520, and the rubber block 520 has a conical groove for accommodating the conical column 530; and a screw 540, which passes through the mounting housing 110 and is threadedly engaged with the mounting housing 110, and the end of the screw 540 is connected to the conical column 530.

[0032] In this embodiment, when the short shaft 310 rotates, the rubber block 520 generates a frictional damping force with the outer wall of the short shaft 310, which hinders the rotation of the short shaft 310 and reduces its rotational speed. This reduces the speed at which the long shaft 330 drives the switching valve core 220 to move, thus extending the synchronous operation time for medical personnel. If medical personnel need to extend the operation time, they can rotate the screw 540 to move axially along the mounting shell 110. The screw 540 pushes the conical column 530 towards the rubber block 520. The conical surface of the conical column 530 presses against the conical groove wall of the rubber block 520, causing the rubber block 520 to undergo radial expansion deformation. This increases the adhesion between the wall of its axial hole and the outer wall of the short shaft 310, increases the frictional damping force, and shortens the operation time. Alternatively, the screw 540 can be rotated in the opposite direction to move the conical column 530 downward.

[0033] In some possible embodiments, such as Figure 16 , Figure 17 As shown, the locking mechanism 600 includes: a rotating shaft 610, rotatably mounted on the mounting frame 120, with a helical groove on the rotating shaft 610; a locking tooth 620, fixedly mounted on the outside of the rotating shaft 610, capable of meshing with the large gear 320; a torsion spring 630, sleeved on the rotating shaft 610 and located between the rotating shaft 610 and the outer wall of the mounting frame 120; and a pressing rod 640, slidably mounted on the limiting seat 410, with the input end of the pressing rod 640 abutting against the power storage cap 440, and the output end of the pressing rod 640 being able to be embedded in the helical groove of the rotating shaft 610 and slide along the groove.

[0034] In this embodiment, medical staff first lift the power-storing cap 440 upwards, the thrust at the input end of the compression rod 640 disappears, and the rotating shaft 610 rotates clockwise to reset under the tight torque of the torsion spring 630, driving the locking tooth 620 to rotate clockwise simultaneously. The spiral groove of the rotating shaft 610 pushes the output end of the compression rod 640 through the groove wall, causing the compression rod 640 to return to its axial position. The locking tooth 620 meshes with the large gear 320, locking the large gear 320. At this time, when medical staff rotate the power-storing cap 440, since the large gear 320 is locked and will not rotate, the spiral spring 430 is tightened when rotating the power-storing cap 440. At this time, the medical staff press down the power storage cap 440 and slide it downward along the axial direction of the limiting seat 410. Its bottom wall generates an axial thrust on the input end of the extrusion rod 640, pushing the extrusion rod 640 to move down along the guide hole of the limiting seat 410. The output end of the extrusion rod 640 is embedded in the spiral groove of the rotating shaft 610. As the extrusion rod 640 slides, it generates a radial component force along the spiral groove wall, driving the rotating shaft 610 to overcome the preload of the torsion spring 630 and rotate counterclockwise. The rotating shaft 610 drives the locking tooth 620 to rotate counterclockwise synchronously, so that the locking tooth 620 gradually disengages from the large gear 320, and the large gear 320 is unlocked and can rotate freely.

[0035] In some possible embodiments, such as Figure 2 As shown, the power storage knob has a rotation direction indicator on its outer side.

[0036] In this embodiment, the spiral spring 430 has a fixed energy storage rotation direction. If the energy storage cover 440 is rotated in the opposite direction, the spiral spring 430 will be stretched in the opposite direction, which will not only fail to achieve effective energy storage, but may also cause the spring to deform and fail. The rotation direction indicator indicates the correct energy storage rotation direction, guiding medical staff to rotate the knob along the arrow direction to ensure that the spiral spring 430 is tightly wound to store energy.

[0037] In some possible embodiments, the nasal oxygen tube connector 122, the two intermediate connectors 123, and the mask connector 124 are all in sealed communication with the interior of the mounting housing 110.

[0038] In this embodiment, the nasal oxygen tube connector 122, the two intermediate connectors 123, and the mask connector 124 are key interface components for oxygen delivery. They are sealed and connected to the inside of the sealed shell to ensure the stability of oxygen supply and prevent oxygen leakage.

[0039] When this mask and catheter combined oxygen supply switching device is in operation, in the initial state, the locking tooth 620 meshes with the large gear 320, and the gear set constrains the switching valve core 220 to the top position of the sealing frame 210. Its top air delivery chamber connects to the air inlet connector 121 and the nasal oxygen tube connector 122, the bottom air delivery chamber is closed, and the air reservoir 250 is not inflated. The external oxygen source enters the nasal oxygen tube connector 122 through the air inlet connector 121 and the top chamber of the switching valve core 220, delivering low-flow oxygen to the patient. The arrow marking the switching pin 240 points to the top position of the marking strip 111. The patient needs to... When switching from nasal cannula oxygen delivery to face mask oxygen delivery, medical staff rotate the energy-storing cap 440 counterclockwise along the rotation direction mark. The spiral spring 430 is wound up, generating elastic deformation and storing rotational potential energy. Then, the energy-storing cap 440 is pressed down, triggering the locking mechanism 600 to unlock. The energy-storing cap 440 pushes the compression rod 640 to slide axially. The compression rod 640 is driven to rotate counterclockwise through the spiral groove of the rotating shaft 610. The locking teeth 620 disengage from the large gear 320. At the same time, the delay mechanism 500 has been preset to a damping state. The spiral spring 430 drives the sliding sleeve 420 to rotate through the hexagonal... The shape-adaptive structure drives the short shaft 310 to rotate, and the large gear 320 meshes with the small gear 340 to achieve speed reduction and torque increase. The long shaft 330 drives the screw groove 350 to rotate. The screw groove 350 converts the rotational motion into the vertical downward movement of the lifting frame 360 ​​through the ball bearing 361, which drives the switching valve core 220 to slowly move down along the sealing frame 210. The valve core removes air as it descends. The top chamber connects the nasal oxygen tube connector 122 with the upper intermediate connector 123. Medical staff gradually increase the air intake flow. The high-flow oxygen portion is filled into the reservoir 250 through the intermediate connector 123 to avoid sudden flow changes impacting the mucous membrane. Arrow 111 points to the middle area. The valve core continues to move downward. The top chamber disengages from the nasal oxygen tube connector 122. The bottom chamber connects the reservoir 250 to the mask connector 124. The reservoir 250 releases oxygen for temporary oxygen supply. Medical staff simultaneously remove the nasal oxygen tube and put on the mask to eliminate the oxygen supply gap. The valve core moves to the bottom of the sealing frame 210. The air inlet connector 121 is stably connected through the top chamber of the switching valve core 220, the middle connector 123, the reservoir 250, the bottom chamber, and the mask connector 124. High-flow oxygen is continuously delivered. The arrow points to the bottom of the label 111.

[0040] In this application, it should be noted that the terms center, longitudinal, transverse, length, width, thickness, upper, lower, front, back, left, right, vertical, horizontal, top, bottom, inner, outer, axial, radial, circumferential, etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. The term "multiple" refers to two or more terms unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] In this application, unless otherwise expressly specified and limited, the first feature above or below the second feature may be in direct contact with the first feature, or in indirect contact with the first feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the first feature may mean the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" of the first feature may mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In this application, the terms "one embodiment," "some embodiments," "specific embodiments," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A mask and catheter combined oxygen supply structure switching device, characterized in that, include: The mounting housing is equipped with an air inlet connector, a nasal oxygen tube connector, and a mask connector. The air inlet connector is used to connect to an external oxygen supply source, the nasal oxygen tube connector is used to connect to a nasal oxygen tube and deliver low-flow oxygen, and the mask connector is used to connect to an oxygen supply mask and deliver medium- to high-flow oxygen. A switching mechanism is sealed and installed inside the mounting housing. The switching mechanism includes a switching valve core and an air reservoir. The switching valve core can move along the inside of the mounting housing. This displacement switches the connection state between the nasal oxygen tube connector, the oxygen supply connector and the air reservoir. The air reservoir can temporarily store oxygen. A control mechanism is disposed on one side of the mounting housing and is connected to the switching valve core for receiving operation commands and driving the switching valve core to move within the mounting housing. A power storage mechanism, which is poweredly connected to the control mechanism, is used to pre-store rotational potential energy and stably transfer the potential energy to the control mechanism during switching operations. A delay mechanism, connected to the control mechanism, is used to extend the time for the power storage mechanism to transmit power to the control mechanism, thereby achieving timing coordination between flow regulation and path switching. The locking mechanism engages with the control mechanism to lock the position of the control mechanism, ensuring the device is in a stable state for oxygen supply via nasal cannula or mask.

2. The mask and catheter combined oxygen supply structure switching device according to claim 1, characterized in that, Also includes: An identification strip is provided on the outside of the housing and cooperates with the switching mechanism; The mounting frame is sealed and mounted on the mounting shell. An air inlet connector is located at the top of the mounting frame and is sealed to an external oxygen supply source. The nasal oxygen tube connector is located on the outer side of the mounting frame and is sealed to the nasal oxygen tube. Both intermediate connectors are located on the outside of the mounting frame, serving as transitional connection components for path switching; The mask connector is located on the outside of the mounting frame and is sealed to the oxygen delivery mask. The nasal oxygen tube connector, the two intermediate connectors, and the mask connector are arranged sequentially along the length of the mounting frame.

3. The mask and catheter combined oxygen supply structure switching device according to claim 2, characterized in that, The switching mechanism includes: A sealing frame is disposed inside the mounting frame to form a sealed guide space for the movement of the switching valve core; The switching valve core is slidably embedded inside the sealing frame. The switching valve core has two independent gas delivery chambers, which can be respectively connected to the nasal oxygen tube connector, the two intermediate connectors, and the mask connector. The sealing block is fixedly installed on the outside of the sealing frame; A switching pin is inserted inside the switching valve core, and one end of the switching pin is provided with an identification arrow, which cooperates with the identification strip; An air reservoir is located outside the sealing frame and is sealed to the two intermediate joints.

4. The mask and catheter combined oxygen supply structure switching device according to claim 3, characterized in that, The control mechanism includes: A short shaft is vertically disposed on one side of the mounting housing, and the upper part of the short shaft has a hexagonal structure; The large gear is fixedly sleeved on the short shaft; The long axis is vertically arranged inside the mounting frame and parallel to the short axis. A small gear is fixedly sleeved on the long shaft, and the small gear meshes with the large gear; A spiral groove post is fixedly sleeved on the side of the long shaft away from the pinion, and two spiral grooves are symmetrically opened on its outer side; A lifting frame is sleeved on the threaded column, and the other end of the lifting frame is fixedly connected to the switching pin. Two ball bearings are fixedly installed on the inner wall of the lifting frame. The two ball bearings are respectively embedded in the spiral grooves of the corresponding screw post and can slide along the grooves.

5. The mask and catheter combined oxygen supply structure switching device according to claim 4, characterized in that, The energy storage mechanism includes: A limiting seat is fixedly installed on one side of the top of the mounting frame; The sliding sleeve has a hexagonal cavity inside, which is adapted to the hexagonal structure on the upper part of the short shaft and is slidably sleeved on the short shaft; A spiral spring, one end of which is fixedly connected to the outer wall of the sliding sleeve; The power-accumulating screw cap is slidably mounted on the limiting seat and fixedly connected to the other end of the spiral spring. The limiting seat is provided with multiple limiting blocks, and multiple limiting grooves are opened on the outer side of the power-accumulating screw cap. The limiting grooves are adapted to the corresponding limiting blocks.

6. The mask and catheter combined oxygen supply structure switching device according to claim 5, characterized in that, The delay mechanism includes: A fixed base is coaxially disposed inside the mounting housing with the short shaft; A rubber block is fixedly installed inside the fixed base and coaxially sleeved on the end of the short axis away from the power storage cap; A conical column is embedded inside the rubber block, and a conical groove is formed inside the rubber block to accommodate the conical column; A screw is threaded through the mounting housing and threaded into the mounting housing, and the end of the screw is connected to the tapered column.

7. The mask and catheter combined oxygen supply structure switching device according to claim 5, characterized in that, The locking mechanism includes: A rotating shaft is rotatably mounted on the mounting frame, and the rotating shaft is provided with a spiral groove; A locking tooth is fixedly disposed on the outside of the rotating shaft, and the locking tooth can mesh with the large gear; A torsion spring is sleeved on the rotating shaft and located between the rotating shaft and the outer wall of the mounting frame; The extrusion rod is slidably mounted on the limiting seat, and the input end of the extrusion rod abuts against the power storage cap. The output end of the extrusion rod can be embedded in the spiral groove of the rotating shaft and slide along the groove.

8. The mask and catheter combined oxygen supply structure switching device according to claim 5, characterized in that, The power storage knob has a rotation direction indicator on its outer side.

9. The mask and catheter combined oxygen supply structure switching device according to claim 1, characterized in that, The nasal oxygen tube connector, the two intermediate connectors, and the mask connector are all sealed and connected to the inside of the mounting housing.

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