Exhaust pressure stabilizing venous pot and extracorporeal blood circulation passage comprising the same

Abstract

The present application relates to the technical field of medical devices, and discloses a kind of exhaust pressure stabilizing venous jug and contain the extracorporeal blood circulation passage of the venous jug, including drip jug, infusion hose, infusion hose is connected in the upper and lower end of drip jug, first outer frame and second outer frame are equipped on the infusion hose of drip jug lower end, gap is opened between first outer frame and second outer frame, bubble sensor detection assembly is screw-mounted on first outer frame.The bubble detection and stopping assembly and exhaust assembly are arranged at the venous jug, the air in infusion hose is detected by bubble sensor detection assembly, when the air in infusion hose is detected by bubble sensor detection assembly, second linear driver drives extrusion block extrusion infusion hose to pause infusion, exhaust assembly drives bubble detection and stopping assembly along infusion hose, air in pipe is lifted to the inside of venous jug, the liquid level height in venous jug is lifted, and a safe venous jug liquid level is maintained.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a pressure-stabilizing venous reservoir and an extracorporeal blood circulation pathway containing the venous reservoir. Background Technology

[0002] The intravenous drip chamber is the second-to-last structure (from top to bottom) in a disposable infusion set. Its functions include displaying the drip rate and the first venting of air. Some can also be used for emergency medication addition (such as cardiac stimulants). Utilizing the photoelectric effect of photoelectric devices, such as phototransistors and photodiodes, the relationship between output voltage and light intensity can be obtained based on the volt-ampere characteristic. When air bubbles are present in the blood delivery tube, the light intensity received by the photosensitive device changes due to light reflection and different media absorbing light differently, thus causing a change in the output voltage. Photoelectric systems offer advantages such as fast response, high precision, and non-contact operation, and are widely used in automated monitoring and control technologies. However, they are sensitive to the color of the medium and have difficulty distinguishing between liquid columns and air bubbles.

[0003] If air enters the venous chamber of the dialysis tubing during dialysis, it will trigger an air alarm, causing the venous clamp monitoring to close and the machine to stop operating, thus halting treatment. This can easily lead to blood clotting and pose a danger.

[0004] If the intravenous drip chamber could be equipped with an automatic venting structure, when air is detected in the chamber, it could be actively vented through this structure, causing the fluid level to rise automatically and maintaining a safe fluid level in the chamber, thus temporarily sustaining the dialysis process and improving safety. Summary of the Invention

[0005] In response to the above situation, this invention proposes a venous reservoir with venting and pressure stabilization function. It has a venting and pressure stabilization structure that can increase the internal hydraulic pressure to temporarily vent the gas when a leak is detected. Furthermore, an extracorporeal blood circulation pathway including the venous reservoir is proposed, which can issue a leak alarm when venting occurs. At this time, the system continues to work until the leak problem is resolved, thereby solving the problem that the prior art may cause the danger of blood clotting due to prolonged cessation of treatment.

[0006] To achieve the above objectives, one of the present invention provides the following technical solution:

[0007] The pressure-stabilizing intravenous drip chamber includes a drip chamber and an infusion tubing. The infusion tubing is connected to the upper and lower ends of the drip chamber. A first outer frame and a second outer frame are provided on the lower end of the drip chamber and the infusion tubing. A notch is provided between the first and second outer frames. A bubble sensor detection component is threaded onto the first outer frame. The opening of the second outer frame is provided with a docking slot and an elastic block for fixing. The lower end of the elastic block is embedded in the hole of the docking slot. A movable compression block is provided inside the second outer frame. The compression block divides the cavity of the second outer frame into an installation cavity and a tubing cavity. The infusion tubing is placed in the tubing cavity. A second linear actuator is provided in the installation cavity. The second linear actuator is connected to the compression block and drives the compression block to compress the infusion tubing in the tubing cavity. A one-way vent valve is provided outside the drip chamber.

[0008] Furthermore, the lower end of the drip pot is provided with a support frame, and the lower end of the support frame is provided with a first linear actuator. The telescopic end of the first linear actuator is provided with a connector, which is connected to the first outer frame through the first connector.

[0009] Furthermore, the first linear actuator extends and retracts, causing the first outer frame and the second outer frame to move along the infusion tubing;

[0010] Furthermore, the outer end of the docking bayonet is provided with a blocking plate, and the blocking plate is arc-shaped to block the squeezing block;

[0011] Furthermore, the extrusion surface of the extrusion block is designed in an arc shape, and the extrusion surface of the extrusion block is adapted to the inner arc surface of the elastic card block;

[0012] Furthermore, the docking slot is divided into a semi-circular channel and a waist hole. The waist hole is located at the bottom of the semi-circular channel. The cross-section of the extrusion block is designed as an inverted triangle. The lower end of the extrusion block is embedded in the waist hole. Multiple docking slots are distributed at equal intervals.

[0013] To achieve the above objectives, the second aspect of the present invention provides the following technical solution:

[0014] The extracorporeal blood circulation pathway includes the pressure-stabilizing venous reservoir described above.

[0015] Furthermore, it also includes an alarm that is electrically connected to the bubble sensor detection assembly.

[0016] Furthermore, it also includes a controller, which is electrically connected to the first linear driver, the second linear driver, and the bubble sensor detection assembly.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] On one hand, a bubble detection and stop component and an air venting component are installed at the infusion pot. The bubble detection and stop component detects air in the infusion tubing through a bubble sensor. When the bubble sensor detects air in the infusion tubing, the second linear actuator drives the squeezing block to squeeze the infusion tubing to stop the infusion. The air venting component drives the bubble detection and stop component to move along the infusion tubing, raising the air in the infusion tubing into the infusion pot, raising the liquid level in the infusion pot, and maintaining a safe liquid level in the infusion pot.

[0019] On the other hand, when this structure is connected to an external blood circulation pathway, it can use an alarm to alert users to leaks with sound or light, thereby enabling rapid handling, shortening maintenance time, and improving safety during use.

[0020] On the other hand, the controller can assess the level of air leakage and adjust the drive speed of the first and second linear drives to match the corresponding hydraulic requirements, so that the entire system can remain in normal working condition even when there is an air leak, thereby ensuring reliability and safety for a period of time. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the exhaust pressure stabilizing venous kettle of the present invention;

[0022] Figure 2 This is an exploded view of the overall structure of the exhaust pressure stabilizing venous kettle of the present invention;

[0023] Figure 3 This is a front view of the bubble detection and stopping component of the present invention;

[0024] Figure 4 This is a rear view of the bubble detection and stopping component of the present invention;

[0025] Figure 5 Figure 1 shows the use of the intravenous infusion vessel and its components in a disposable infusion set according to the present invention.

[0026] Figure 6 This is a schematic diagram of the extracorporeal blood circulation pathway of the present invention.

[0027] In the diagram: 1-Drip chamber; 2-Infusion tubing; 3-Support frame; 4-First linear actuator; 5-Connector; 6-First outer frame; 7-Second outer frame; 8-Bubble sensor detection assembly; 9-Mounting cavity; 10-Notch; 11-Matching bayonet; 12-Blocking plate; 13-Elastic locking block; 14-Squeezing block; 15-Second linear actuator; 16-Pipe cavity; 17-One-way exhaust valve; 18-Extracorporeal blood circulation pathway; 19-Alarm; 20-Controller. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the above description of the present invention, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is conventionally placed during use. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0033] One of the inventions: Ventilation and Pressure Stabilizing Vein Jar

[0034] like Figure 1-5As shown in the figure, this embodiment provides an exhaust pressure stabilizing intravenous drip chamber, which includes a drip chamber 1 and an infusion hose 2. The infusion hose 2 is connected to the upper and lower ends of the drip chamber 1. A first outer frame 6 and a second outer frame 7 are provided on the infusion hose 2 at the lower end of the drip chamber 1. A notch 10 is formed between the first outer frame 6 and the second outer frame 7. A bubble sensor detection component 8 is installed on the first outer frame 6 by means of a thread. At the opening of the second outer frame 7, there are a docking bayonet 11 and an elastic block 13 for fixing. The lower end of the elastic block 13 is embedded in the hole of the docking bayonet 11. An active extrusion block 14 is provided inside the second outer frame 7. The extrusion block 14 divides the cavity of the second outer frame 7 into an installation cavity 9 and a pipeline cavity 16. The infusion hose 2 is placed inside the pipeline cavity 16. A second linear driver 15 is provided inside the installation cavity 9. The second linear driver 15 is connected to the extrusion block 14 and drives the extrusion block 14 to compress the infusion hose 2 inside the pipeline cavity 16.

[0035] When the drip chamber 1 is connected to the infusion bag through a disposable infusion set, the liquid in the infusion bag drips into the drip chamber 1, and the drip chamber 1 discharges the gas. When the liquid level in the drip chamber 1 drops and air bubbles enter the infusion hose 2, the air bubbles flow along the infusion hose 2 to the first outer frame 6. The bubble sensor detection component 8 detects the air bubbles in the infusion hose 2. After detecting the presence of air bubbles, it transmits information to drive the second linear driver 15 to start. The second linear driver 15 expands and contracts to drive the extrusion block 14 to move towards the pipeline cavity 16, reducing the space of the pipeline cavity 16, thereby compressing the infusion hose 2 inside the pipeline cavity 16 and preventing the air bubbles in the infusion hose 2 from flowing.

[0036] In this embodiment, a blocking piece 12 is provided at the outer end of the docking bayonet 11. The blocking piece 12 is designed in an arc shape, and the blocking piece 12 blocks the extrusion block 14. The extrusion surface of the extrusion block 14 is designed in an arc shape, and the extrusion surface of the extrusion block 14 is adapted to the inner arc surface of the elastic block 13. The docking bayonet 11 is divided into a semi-circular channel and a waist-shaped hole. The waist-shaped hole is located at the bottom of the semi-circular channel. The cross-section of the extrusion block 14 is designed in an inverted triangle shape, and the lower end of the extrusion block 14 is embedded in the waist-shaped hole. Multiple docking bayonets 11 are evenly distributed. During installation, the first outer frame 6 can be designed as an open frame or a "mouth"-shaped frame. A slit needs to be opened at one corner of the "mouth"-shaped design to facilitate the insertion of the infusion hose 2. The second outer frame 7 uses the docking bayonet 11 and the elastic block 13 to achieve quick installation. The first outer frame 6 can also adopt the same structure to achieve quick installation, which can be adjusted according to the actual situation. The extrusion surface of the extrusion block 14 is adapted to the elastic block 13, which can effectively compress the infusion hose 2 and effectively block the continuous flow of air bubbles in the infusion hose 2.

[0037] In this embodiment, the lower end of the drip chamber 1 is provided with a support frame 3, the lower end of the support frame 3 is provided with a first linear actuator 4, the telescopic end of the first linear actuator 4 is provided with a connector 5, and is connected to the first outer frame 6 through the connector 5; the first linear actuator 4 is designed to drive the first outer frame 6 and the second outer frame 7 to move along the infusion tubing 2, which can lift the air bubbles in the infusion tubing 2 into the drip chamber 1, so that the liquid in the drip chamber 1 is kept at a safe liquid level.

[0038] In this embodiment, a one-way exhaust valve 17 is provided outside the drip chamber. When the first linear actuator continues to push, the liquid pressure increases, which increases the internal pressure of the drip chamber. At this time, on the one hand, it can prevent the further development of air leakage and ensure the normal operation of dialysis. On the other hand, when the internal pressure reaches a certain pressure, the gas can be discharged out through the one-way exhaust valve, thereby reducing the amount of internal gas and lowering the gas pressure.

[0039] Second aspect of this invention: Extracorporeal blood circulation pathway:

[0040] like Figure 6 As shown, this embodiment provides an extracorporeal blood circulation pathway 18 for kidney dialysis operations. This pathway includes a venting and pressure-stabilizing venous reservoir as described above. When gas enters the tubing within the extracorporeal blood circulation pathway and eventually reaches the venting and pressure-stabilizing venous reservoir, it is detected by the bubble sensor detection component. This activates the second linear actuator, which moves a squeezing block towards the tubing cavity, reducing the space within the cavity and thus preventing the flow of bubbles within the tubing. Furthermore, the first linear actuator can drive the first and second outer frames to rise, thereby moving the bubbles into the drip chamber and achieving a safe liquid level.

[0041] As an improvement to this embodiment, an alarm 19 is also included, which is electrically connected to the bubble sensor detection component. When the bubble sensor detection component detects bubbles in the pipeline, it transmits the information to the alarm, which then sounds an alarm, indicating that maintenance is required.

[0042] The alarm in this embodiment can be an audible alarm or a visual alarm, preferably a combination of audible and visual alarms. It can be combined with the bubble sensor detection component or they can be separate structures, without limitation.

[0043] As an improvement to this embodiment, a controller 20 is also included. The controller is electrically connected to the alarm, the first linear actuator, the second linear actuator, and the bubble sensor detection assembly. The controller can control each actuator, thereby achieving intelligent fault alarm and handling.

[0044] Specifically, when the bubble sensor detection component detects bubbles in the pipeline, it transmits the information to the controller. The controller then issues an alarm and adjustment command. Upon receiving the alarm command, the alarm device sounds an alarm. Simultaneously, upon receiving the adjustment command, the second linear actuator extends its drive end to compress the pipeline, preventing the bubbles from flowing within. After this is achieved, the first linear actuator is activated, causing the first and second outer frames to rise, thereby moving the bubbles into the dripper and reaching a safe liquid level.

[0045] At this point, dialysis continues without stopping, effectively preventing dangerous problems caused by prolonged cessation of treatment and resulting coagulation.

[0046] Of course, by setting it properly, the contact pressure between the first linear actuator, the second linear actuator and the pipeline can be adjusted to adjust the appropriate travel speed, thereby achieving the purpose of intelligent control.

[0047] Of course, it is necessary for this controller to connect with relevant external devices to achieve coordination with external devices and ensure the normal operation of kidney dialysis.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A pressure-stabilized exhaust venous pot, comprising a drip pot, a transfusion hose, the transfusion hose being connected to the upper and lower ends of the drip pot, characterized in that: The lower end of the drip bottle and the upper end of the infusion tube are provided with a first outer frame and a second outer frame, a gap is formed between the first outer frame and the second outer frame, a bubble sensor detection assembly is threadedly installed on the first outer frame, a docking socket and an elastic clamping block for fixation are arranged at the opening of the second outer frame, the lower end of the elastic clamping block is embedded in the hole of the docking socket, a movable extrusion block is arranged in the frame of the second outer frame, the extrusion block divides the cavity of the second outer frame into an installation cavity and a pipeline cavity, the infusion tube is arranged in the pipeline cavity, a second linear actuator is arranged in the cavity of the installation cavity, the second linear actuator is connected with the extrusion block, and the extrusion block is driven to compress the infusion tube in the pipeline cavity, a one-way exhaust valve is arranged outside the drip bottle, the lower end of the drip bottle is provided with a support frame, the lower end of the support frame is provided with a first linear actuator, the telescopic end of the first linear actuator is provided with a connecting head, the first connecting head is connected with the first outer frame, and the first linear actuator is telescopic to drive the first outer frame and the second outer frame to move along the infusion tube.

2. The vented holding venous reservoir according to claim 1, wherein: The outer end of the docking socket is provided with a blocking piece, and the blocking piece is designed in an arc shape.

3. The regulated-vent venous reservoir of claim 2, wherein: The extrusion surface of the extrusion block is designed in an arc shape, and the extrusion surface of the extrusion block is matched with the inner arc surface of the elastic clamping block.

4. The vented constant pressure venous reservoir of claim 3, wherein: The docking socket is divided into a semicircular channel and a waist hole, the waist hole is located at the bottom of the semicircular channel, the cross section of the extrusion block is designed in an inverted triangular shape, the lower end of the extrusion block is embedded in the waist hole, and a plurality of docking sockets are distributed at equal intervals.

5. Extracorporeal blood circulation circuit, characterized in that: The exhaust pressure stabilizing venous bottle comprises the exhaust pressure stabilizing venous bottle according to any one of claims 1-4.

6. The extracorporeal blood circulation circuit according to claim 5, characterized in that: The alarm is in electric connection with the bubble sensor detection assembly.

7. The extracorporeal blood circulation circuit according to claim 6, characterized in that: The controller is in electric connection with the first linear actuator, the second linear actuator and the bubble sensor detection assembly.

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