Degassing kettle

Abstract

The utility model discloses a degassing kettle, which relates to the technical field of medical instruments and comprises a kettle body and a cover body arranged on the kettle body, a first connecting pipe arranged on the lower side in the kettle body is arranged in the kettle body, a second connecting pipe positioned in the kettle body is arranged on the cover body, and the inside of the kettle body is communicated with the outside through the first connecting pipe and the second connecting pipe. The first connecting pipes and the second connecting pipes are arranged in a staggered mode. Through the arrangement of the first connecting pipe and the second connecting pipe, gas in the pipeline can be well discharged, the gas is prevented from entering the second connecting pipe, and therefore bubbles can be prevented from entering blood along with replacement liquid.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially, relates to a degassing kettle. BACKGROUND

[0002] Continuous renal replacement therapy (CRRT) is a kind of extracorporeal blood purification treatment technology, and is the general term of all continuous, slow water and solute treatment methods.Blood purification refers to a kind of treatment method that one-time extracorporeal blood purification circulation pipeline is used to lead blood out of human body, remove endogenous or (and) exogenous toxins in patient's blood in blood purification device or dialyzer, and then send blood back into human body through one-time extracorporeal blood purification circulation pipeline.During continuous blood purification treatment, heated replacement fluid needs to be supplemented into blood access.

[0003] However, the replacement fluid contains bicarbonate, and when blood purification treatment is performed, gas will be precipitated after the replacement fluid is heated, and when there is gas in the heating pipeline, the gas cannot be discharged due to the closed pipeline, and can only enter the blood pipeline, which is not conducive to the treatment of patients and increases the risk of blood clotting.In addition, if the pipeline joint is not connected firmly, there is also a risk of gas entering the pipeline. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a degassing kettle, which can better discharge the gas in the pipeline.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a kettle body and a cover body arranged on the kettle body are included, a first connecting pipe is arranged at the lower side of the kettle body, a second connecting pipe is arranged in the kettle body, the first connecting pipe and the second connecting pipe are both connected with the inside and outside of the kettle body, and the first connecting pipe and the second connecting pipe are staggered.

[0006] The technical principle of the utility model is as follows: the replacement fluid is sucked into the kettle body through the first connecting pipe, and then sucked out through the second connecting pipe, the replacement fluid will cover the one end of the second connecting pipe in the kettle body, and the first connecting pipe and the second connecting pipe are both filled with replacement fluid.If bubbles enter the kettle body with the replacement fluid, the bubbles will rise to the liquid surface under the action of buoyancy, thereby discharging the gas in the replacement fluid in the kettle body, ensuring that there is no gas entering the second connecting pipe, and thus the gas in the pipeline can be better discharged.

[0007] Further, the distance between the horizontal plane where the end of the first connecting pipe away from the bottom of the kettle is located and the horizontal plane where the end of the first connecting pipe close to the bottom of the kettle is located is greater than the distance between the horizontal plane where the end of the second connecting pipe away from the top of the kettle is located and the horizontal plane where the end of the first connecting pipe close to the bottom of the kettle is located.

[0008] Further, the distance between the horizontal plane where the end of the first connecting pipe away from the bottom of the kettle is located and the horizontal plane where the end of the second connecting pipe away from the top of the kettle is located is between 10mm and 30mm.

[0009] Further, the distance between the horizontal plane where the end of the first connecting pipe away from the bottom of the kettle is located and the horizontal plane where the end of the first connecting pipe close to the bottom of the kettle is located is equal to the distance between the horizontal plane where the end of the second connecting pipe away from the top of the kettle is located and the horizontal plane where the end of the first connecting pipe close to the bottom of the kettle is located.

[0010] Further, the distance between the horizontal plane where the end of the first connecting pipe away from the bottom of the kettle is located and the horizontal plane where the end of the first connecting pipe close to the bottom of the kettle is located is less than the distance between the horizontal plane where the end of the second connecting pipe away from the top of the kettle is located and the horizontal plane where the end of the first connecting pipe close to the bottom of the kettle is located.

[0011] Further, the distance between the side wall of the first connecting pipe and the side wall of the second connecting pipe is at least 30mm.

[0012] Further, the inner diameter of the second connecting pipe is greater than the inner diameter of the first connecting pipe.

[0013] Further, a pressure relief head is arranged on the cover and is in communication with the kettle.

[0014] The present application has the following beneficial effects:

[0015] 1. The first connecting pipe and the second connecting pipe are arranged to realize the function of exhausting gas, avoid the gas entering the second connecting pipe, and thus avoid the bubbles entering the blood along with the replacement liquid.

[0016] 2. The pressure relief head is connected with the blood purification equipment. When the pressure in the kettle is too large, the blood purification equipment detects that the pressure in the kettle is too large and then exhausts the gas in the kettle. The pressure in the kettle is released, and the liquid level in the replacement liquid kettle is automatically adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a structural schematic diagram of the present application;

[0018] Figure 2 Fig. 2 is a front view of the present application;

[0019] Figure 3It is the first sectional view of the utility model;

[0020] Figure 4 It is the second sectional view of the utility model;

[0021] Figure 5 It is the third sectional view of the utility model.

[0022] In the above-described drawings:

[0023] 1, kettle body;2, cover body;3, first connecting pipe;4, second connecting pipe;5, first connecting head;6, second connecting head;7, pressure relief head. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments; the structures described in various embodiments can be freely combined without structural or principle conflicts.

[0025] In the utility model, unless explicitly defined and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, or can be detachable connection, or can be integrated;Can be mechanical connection, or can be electrical connection;Can be directly connected, or can be indirectly connected through an intermediate medium, can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] In the description of the utility model, it should be pointed out that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly placed when the utility model product is used, only for the convenience of describing the utility model and simplifying the description, and is not indicative or implied that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.

[0027] Some embodiments of the utility model will be described below with reference to the drawings:

[0028] As Figures 1-5As shown, this utility model proposes a degassing kettle, including a kettle body 1 and a lid 2 disposed on the kettle body 1. A first connecting pipe 3 is disposed inside the kettle body 1 on the lower side of the kettle body 1, and a second connecting pipe 4 is disposed on the lid 2 inside the kettle body 1. Both the first connecting pipe 3 and the second connecting pipe 4 connect the inside of the kettle body 1 to the outside, and the first connecting pipe 3 and the second connecting pipe 4 are arranged alternately.

[0029] The lid 2 and the vessel body 1 can be integrally formed, or the lid 2 can be a sealing cap attached to the vessel body 1; preferably, the sealing cap is attached to the vessel body 1. The vessel body 1 is provided with a first connector 5 communicating with the first connecting pipe 3, and the lid 2 is provided with a second connector 6 communicating with the second connecting pipe 4. A container containing replacement fluid can be connected through the first connector 5. A peristaltic pump is connected to the second connector 6 via a pipe, allowing the replacement fluid in the vessel body 1 to be drawn into the blood purification device. The replacement fluid is drawn into the vessel body 1 through the first connecting pipe 3, submerging one end of the second connecting pipe 4 inside the vessel body 1, and then drawn out through the second connecting pipe 4. At this point, both the first connecting pipe 3 and the second connecting pipe 4 are filled with replacement fluid for patient treatment. This avoids the situation where gas in the heating pipeline cannot be expelled due to the sealed pipeline, allowing it to enter the blood pipeline, which is detrimental to patient treatment and increases the risk of coagulation. Clinically, the replacement fluid flow rate usually does not exceed 250 mL / min. When the replacement fluid enters the vessel body 1 from bottom to top through the first connecting pipe 3, the fluid will have an initial velocity due to the flow rate being within a certain range. The first connecting pipe 3 is a tapered tube with a diameter that gradually decreases from bottom to top, which can further enhance the initial velocity, causing the replacement fluid entering the vessel body 1 to continue to impact upwards for a certain distance. If air bubbles enter the vessel body 1 along with the replacement fluid, some of the air bubbles will be directly discharged into the vessel body 1, while the other air bubbles will rise and float to the surface under the action of buoyancy, thereby discharging the gas in the replacement fluid into the vessel body 1 and ensuring that no gas enters the second connecting pipe 4, thus effectively discharging the gas in the pipeline.

[0030] There are three installation methods for the first connecting pipe 3 and the second connecting pipe 4:

[0031] 1. For example Figure 3 As shown, the distance between the horizontal plane of the end of the first connecting pipe 3 furthest from the bottom of the kettle body 1 and the horizontal plane of the end of the first connecting pipe 3 closest to the bottom of the kettle body 1 is greater than the distance between the horizontal plane of the end of the second connecting pipe 4 furthest from the top of the kettle body 1 and the horizontal plane of the end of the first connecting pipe 3 closest to the bottom of the kettle body 1. The distance between the horizontal plane of the end of the first connecting pipe 3 furthest from the bottom of the kettle body 1 and the horizontal plane of the end of the second connecting pipe 4 furthest from the top of the kettle body 1 is between 10mm and 30mm.

[0032] By the above setting, the liquid level of the displacement liquid in the kettle body 1 can be made to cover the one end of the second connecting pipe 4 in the kettle body 1 while not covering the one end of the first connecting pipe 3 in the kettle body 1. In this way, the upper end of the first connecting pipe 3 is located above the liquid level, and the lower end of the second connecting pipe 4 is located below the liquid level. The gas bubbles brought in by the displacement liquid in the first connecting pipe 3 directly enter the inside of the kettle body 1. Due to the liquid seal of the displacement liquid, the gas cannot pass through the displacement liquid to enter the second connecting pipe 4, further ensuring that the displacement liquid sucked into the second connecting pipe 4 does not have gas bubbles. When the range of the interval is greater than 30 mm, it is not convenient to demold, and it is not convenient for the production of the product. When the range of the interval is less than 10 mm, there is a risk that the gas bubbles enter the second connecting pipe 4. Through experiments, it is found that the optimal height difference is 15 mm.

[0033] 2. As shown in Figure 4 the first connecting pipe 3 is located between the horizontal plane where the one end of the first connecting pipe 3 is located and the horizontal plane where the one end of the first connecting pipe 3 is located. The interval between the side wall of the first connecting pipe 3 and the side wall of the second connecting pipe 4 is at least 30 mm.

[0034] By the above setting, the horizontal plane where the upper end of the first connecting pipe 3 is located is located at the same level as the horizontal plane where the lower end of the second connecting pipe 4 is located. When the liquid level of the displacement liquid covers the lower end surface of the second connecting pipe 4, it also covers the upper end surface of the first connecting pipe 3, forming a liquid seal. This can avoid the gas entering the second connecting pipe 4 along with the first connecting pipe 3 into the kettle body 1. The interval between the side wall of the first connecting pipe 3 and the side wall of the second connecting pipe 4 is at least 30 mm, which can further avoid the gas entering the second connecting pipe 4.

[0035] 3. As shown in Figure 5 the interval between the horizontal plane where the one end of the first connecting pipe 3 is located and the horizontal plane where the one end of the first connecting pipe 3 is located is less than the interval between the horizontal plane where the one end of the first connecting pipe 3 is located and the horizontal plane where the one end of the first connecting pipe 3 is located. The interval between the side wall of the first connecting pipe 3 and the side wall of the second connecting pipe 4 is at least 30 mm.

[0036] By the above setting, the horizontal plane where the upper end of the first connecting pipe 3 is located is lower than the horizontal plane where the lower end of the second connecting pipe 4 is located. After the liquid level of the displacement liquid covers the upper end surface of the first connecting pipe 3, it covers the lower end surface of the second connecting pipe 4. This forms a liquid seal for the lower end surface of the second connecting pipe 4. The interval between the side wall of the first connecting pipe 3 and the side wall of the second connecting pipe 4 is at least 30 mm, which can avoid the gas entering the second connecting pipe 4 along with the first connecting pipe 3 into the kettle body 1.

[0037] Further, asFigures 3-5 As shown, the inner diameter of the second connecting pipe 4 is larger than that of the first connecting pipe 3.

[0038] Through the above setting, the liquid in the kettle body 1 is avoided to be too much, so that the second connecting pipe 4 will suck in gas. The liquid level of the replacement liquid in the kettle body 1 is at two-thirds of the entire kettle body 11, and when the liquid level exceeds the set height ± 5mm, an alarm will be given through the external device, so as to ensure the safety of the patient in use.

[0039] Further, as shown in FIG. 1, Figure 5 A pressure relief head 7 is arranged on the kettle body 1 and communicates with the kettle body 1.

[0040] When too much gas is sucked into the kettle body 1, the pressure in the kettle body 1 will become large. The pressure in the kettle body 1 should be kept between 60mmHg-150mmHg under normal circumstances, and should be kept between 60mmHg-100mmHg optimally. The pressure relief head 7 is connected to the blood purification device through a pipeline, and when the blood purification device detects that the pressure in the kettle body 1 is too large, the pressure in the kettle body 1 will be relieved through the pressure relief head 7.

Claims

1. A gas removal pitcher characterized by: The kettle body (1) and the cover body (2) are arranged on the kettle body (1), the first connecting pipe (3) is arranged in the kettle body (1) on the lower side, the second connecting pipe (4) is arranged in the cover body (2) and is located in the kettle body (1), the first connecting pipe (3) and the second connecting pipe (4) are both connected with the inside of the kettle body (1) and the outside, and the first connecting pipe (3) and the second connecting pipe (4) are staggered.

2. The gas removing kettle according to claim 1, wherein, The distance between the horizontal plane where the end of the first connecting pipe (3) away from the bottom of the kettle body (1) is located and the horizontal plane where the end of the first connecting pipe (3) close to the bottom of the kettle body is located is greater than the distance between the horizontal plane where the end of the second connecting pipe (4) away from the top of the kettle body (1) is located and the horizontal plane where the end of the first connecting pipe (3) close to the bottom of the kettle body is located.

3. The gas removing kettle according to claim 1, wherein, The distance between the horizontal plane where the end of the first connecting pipe (3) away from the bottom of the kettle body (1) is located and the horizontal plane where the end of the second connecting pipe (4) away from the top of the kettle body (1) is located is within the range of 10mm-30mm.

4. The gas removing kettle according to claim 1, wherein, The distance between the horizontal plane where the end of the first connecting pipe (3) away from the bottom of the kettle body (1) is located and the horizontal plane where the end of the first connecting pipe (3) close to the bottom of the kettle body is located is equal to the distance between the horizontal plane where the end of the second connecting pipe (4) away from the top of the kettle body (1) is located and the horizontal plane where the end of the first connecting pipe (3) close to the bottom of the kettle body is located.

5. The gas removing kettle according to claim 1, wherein The distance between the horizontal plane where the end of the first connecting pipe (3) away from the bottom of the kettle body (1) is located and the horizontal plane where the end of the first connecting pipe (3) close to the bottom of the kettle body is located is less than the distance between the horizontal plane where the end of the second connecting pipe (4) away from the top of the kettle body (1) is located and the horizontal plane where the end of the first connecting pipe (3) close to the bottom of the kettle body is located.

6. A gas removing pitcher according to claim 4 or 5, characterized in that The distance between the side wall of the first connecting pipe (3) and the side wall of the second connecting pipe (4) is at least 30mm.

7. A gas removing pitcher according to any one of claims 1 to 5, wherein, The inner diameter of the second connecting pipe (4) is greater than the inner diameter of the first connecting pipe (3).

8. The gas removing kettle according to claim 6, wherein, The inner diameter of the second connecting pipe (4) is greater than the inner diameter of the first connecting pipe (3).

9. A gas removing pitcher according to any one of claims 1, 2, 3, 4, 5 or 8, wherein, The cover body (2) is provided with a pressure relief head (7) in communication with the kettle body (1).

10. The gas removing kettle according to claim 6, wherein The cover body (2) is provided with a pressure relief head (7) in communication with the kettle body (1).

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