Blood transfusion and infusion air vent box

Abstract

The present invention discloses a blood transfusion and infusion air exhaust box, which comprises a box body. The box body is provided with a liquid inlet, a liquid outlet and at least one air exhaust port; the box body is provided with at least one air exhaust structure, and the air exhaust structure comprises a flow channel and a gas-liquid separation membrane. The liquid inlet and the liquid outlet are communicated with two ends of the flow channel. The flow channel is in a sheet shape, and the flow channel and the gas-liquid separation membrane are stacked; the air exhaust port is communicated with the flow channel, and the gas-liquid separation membrane is arranged between the air exhaust port and the flow channel. During use, the liquid medicine flows from the liquid inlet through the flow channel to the liquid outlet. By arranging the gas-liquid separation membrane, the air bubbles in the liquid medicine can pass through the gas-liquid separation membrane and be discharged from the air exhaust port, without the need for medical staff to manually discharge the air, which is relatively simple; since the flow channel is in a sheet shape and the thickness of the flow channel is relatively thin, the air bubbles in the flow channel are easy to contact the gas-liquid separation membrane, facilitating the discharge of the air bubbles.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to a blood transfusion and infusion air exhaust box. Background Art

[0002] During intravenous infusion or blood transfusion, air bubbles will be generated. Especially for heated blood and liquid medicine, more air bubbles will be produced. In order to prevent air bubbles from entering the blood vessels and causing harm to the human body, the existing method of separating air bubbles is to set a drip chamber on the infusion or blood transfusion tube. However, during the use of the drip chamber, when there is too much air in the drip chamber, medical staff need to pause the infusion or blood transfusion, manually discharge the air in the drip chamber, and then continue the infusion or blood transfusion. It cannot automatically exhaust air, and there is still a certain degree of inconvenience in use. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a blood transfusion and infusion air exhaust box.

[0004] The blood transfusion and infusion air exhaust box according to an embodiment of the present invention includes a box body. The box body is provided with a liquid inlet, a liquid outlet and at least one air exhaust port; the box body is provided with at least one air exhaust structure, and the air exhaust structure includes a flow channel and a gas-liquid separation membrane. The liquid inlet and the liquid outlet are communicated with two ends of the flow channel. The flow channel is in a sheet shape, and the flow channel and the gas-liquid separation membrane are stacked; the air exhaust port is communicated with the flow channel, and the gas-liquid separation membrane is arranged between the air exhaust port and the flow channel.

[0005] The blood transfusion and infusion air exhaust box according to an embodiment of the present invention has at least the following technical effects: During use, the liquid medicine flows from the liquid inlet through the flow channel to the liquid outlet. By setting the gas-liquid separation membrane, the air bubbles in the liquid medicine can pass through the gas-liquid separation membrane and be discharged from the air exhaust port, without the need for medical staff to manually discharge the air, which is relatively simple; since the flow channel is in a sheet shape and the thickness of the flow channel is relatively thin, the air bubbles in the flow channel are easy to contact the gas-liquid separation membrane, which is convenient for the discharge of air bubbles.

[0006] According to some embodiments of the present invention, the flow channel has a first flow section and a second flow section. The liquid inlet, the first flow section, the second flow section and the liquid outlet are sequentially communicated. The flow area of the second flow section is smaller than that of the first flow section, and the gas-liquid separation membrane is arranged between the first flow section and the air exhaust port. When performing intravenous infusion, the liquid medicine flows through the first flow section and the second flow section in sequence. Since the flow area of the second flow section is smaller than that of the first flow section, the flow velocity of the first flow section is smaller and the pressure is larger, which is beneficial to the discharge of air bubbles.

[0007] According to some embodiments of the present invention, the exhaust structure further includes a membranous member and a bump, both the membranous member and the bump are connected to the cartridge body; the membranous member and the gas-liquid separation membrane are stacked at intervals, a first flow section is defined between the membranous member and the gas-liquid separation membrane, a second flow section is defined between the membranous member and the bump, and the membranous member is disposed on the outer surface of the cartridge body. It is convenient to attach a heating element such as an electric heating sheet outside the membranous member to warm the liquid medicine.

[0008] According to some embodiments of the present invention, the membranous member is a transparent thin film. In this way, it can be seen from the outside whether there are bubbles in the flow channel, whether the bubbles are discharged, whether the gas-liquid separation membrane is damaged, etc., which is convenient for medical staff to adjust the position of the blood transfusion and infusion exhaust box in time or replace the blood transfusion and infusion exhaust box.

[0009] According to some embodiments of the present invention, the blood transfusion and infusion exhaust box further includes a heating device, the heating device is disposed outside the cartridge body, the heating device has a heating surface, and the heating surface is attached to the membranous member. When needed, the liquid medicine can be warmed, the heat exchange area between the liquid medicine in the flow channel and the heating device is large, and the heating efficiency is high.

[0010] According to some embodiments of the present invention, the cartridge body is provided with two of the exhaust structures, the gas-liquid separation membranes of the two exhaust structures are stacked at intervals front and back, and the exhaust port is disposed between the two exhaust structures. By providing two exhaust structures, the infusion speed is increased.

[0011] According to some embodiments of the present invention, a liquid inlet cavity and a liquid outlet cavity are provided in the cartridge body, the liquid inlet and the flow channels of the two exhaust structures are both communicated with the liquid inlet cavity, and the liquid outlet and the flow channels of the two exhaust structures are both communicated with the liquid outlet cavity. The liquid inlet cavity and the liquid outlet cavity can play a role in stabilizing the pressure, making the pressures in the two flow channels approximately equal, and the forces on the various components of the blood transfusion and infusion exhaust box are more balanced, and the structure is stable.

[0012] According to some embodiments of the present invention, an exhaust cavity is provided in the cartridge body, at least one of the exhaust ports is provided on the side wall of the exhaust cavity, a support grid is provided in the exhaust cavity, the support grid is disposed between the two gas-liquid separation membranes, and the support grid has a plurality of grid cavities, and each grid cavity is communicated with at least one of the exhaust ports. The support grid can simultaneously support the two gas-liquid separation membranes, prevent the gas-liquid separation membrane from collapsing inward, and keep the flow channel in a sheet shape with a small thickness.

[0013] According to some embodiments of the present invention, the box body is in the shape of a cuboid. The liquid inlet is arranged at the top of the box body, and the liquid outlet is arranged at the bottom of the box body. The flow channels of the two exhaust structures are respectively arranged on the front side and the rear side of the box body; the exhaust port is arranged on the left side or the right side of the box body. This facilitates the use of an external heating device to heat the liquid medicine in the flow channel. The heating device can be attached to the front side and the rear side of the box body, and the liquid inlet, the liquid outlet, and the exhaust port will not interfere with the setting of the heating device.

[0014] According to some embodiments of the present invention, the liquid inlet, the first flow section, the second flow section, and the liquid outlet are arranged in sequence from top to bottom. In this way, when infusing, the liquid medicine can flow through the first flow section and the second flow section from top to bottom. In the first flow section, the air bubbles can move upward under the action of buoyancy, which is equivalent to prolonging the time for the air bubbles to flow through the first flow section and is beneficial to the discharge of the air bubbles.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a schematic perspective view of a blood transfusion and infusion exhaust box according to an embodiment of the present invention;

[0018] Figure 2 is Figure 1 an enlarged right-side cross-sectional view of the liquid inlet in

[0019] Figure 3 is Figure 1 an enlarged right-side cross-sectional view of the liquid outlet in

[0020] Figure 4 is a schematic exploded view of a blood transfusion and infusion exhaust box according to an embodiment of the present invention.

[0021] In the drawings:

[0022] 100 - box body; 110 - liquid inlet; 111 - liquid inlet cavity; 120 - liquid outlet; 121 - liquid outlet cavity; 130 - exhaust port; 211 - first flow section; 220 - membrane member; 230 - gas-liquid separation membrane; 240 - convex block; 300 - support grid; 310 - grid cavity; 400 - heating device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only for explaining the present invention and should not be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the orientation descriptions, such as upper, lower, front, rear, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the present invention. In addition, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself. If the first and second are described only for the purpose of distinguishing technical features, they should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0026] Next, refer to Figures 1 to 4 to describe a blood transfusion and infusion air exhaust box according to an embodiment of the present invention.

[0027] A blood transfusion and infusion air exhaust box according to an embodiment of the present invention includes a box body 100. The box body 100 is provided with a liquid inlet 110, a liquid outlet 120, and at least one air exhaust port 130. The box body 100 is provided with at least one air exhaust structure. The air exhaust structure includes a flow channel and a gas-liquid separation membrane 230. The liquid inlet 110 and the liquid outlet 120 communicate with both ends of the flow channel. The flow channel is in a sheet shape, and the flow channel is stacked with the gas-liquid separation membrane 230. The air exhaust port 130 communicates with the flow channel, and the gas-liquid separation membrane 230 is arranged between the air exhaust port 130 and the flow channel.

[0028] For example, as Figure 1 shown, the liquid inlet 110 is arranged at the top of the box body 100, the liquid outlet 120 is arranged at the bottom of the box body 100, and the air exhaust port 130 is arranged on the right side of the box body 100; refer to Figure 2, the flow channel has a first flow segment 211 and a second flow segment. The first flow segment 211 is disposed below the liquid inlet 110. The gas-liquid separation membrane 230 is vertically arranged. An exhaust cavity is provided in the box body 100. The exhaust port 130 is provided on the cavity wall of the exhaust cavity. Taking the position of the outer surface of the box body 100 relative to the exhaust cavity as the outside, the gas-liquid separation membrane 230 covers the outside of the exhaust cavity, and the first flow segment 211 is disposed outside the gas-liquid separation membrane 230; Refer to Figure 3 , the second flow segment is disposed at the bottom of the first flow segment 211. The liquid outlet 120 is disposed below the second flow segment. A transparent film covers the outside of the flow channel. The transparent film can extend from the liquid inlet 110 to the liquid outlet 120. A convex block 240 is provided at the bottom of the exhaust cavity. The convex block 240 is disposed at the bottom of the gas-liquid separation membrane 230. The second flow segment is disposed outside the convex block 240. The convex block 240 protrudes outward relative to the gas-liquid separation membrane 230, so that the flow area of the second flow segment is smaller than that of the first flow segment 211; The flow channel can be disposed on a plane or in the shape of an arc surface.

[0029] During use, the liquid medicine flows from the liquid inlet 110 through the flow channel to the liquid outlet 120. By providing the gas-liquid separation membrane 230, the air bubbles in the liquid medicine can pass through the gas-liquid separation membrane 230 and be discharged from the exhaust port 130, without the need for medical staff to manually discharge the air, which is relatively simple; Since the flow channel is sheet-shaped and the thickness of the flow channel is relatively thin, the air bubbles in the flow channel are easily in contact with the gas-liquid separation membrane 230, facilitating the discharge of the air bubbles.

[0030] In some embodiments of the present invention, the flow channel has a first flow segment 211 and a second flow segment. The liquid inlet 110, the first flow segment 211, the second flow segment, and the liquid outlet 120 are sequentially connected. The flow area of the second flow segment is smaller than that of the first flow segment 211. The gas-liquid separation membrane 230 is disposed between the first flow segment 211 and the exhaust port 130. When intravenous infusion is performed, the liquid medicine flows through the first flow segment 211 and the second flow segment in sequence. Since the flow area of the second flow segment is smaller than that of the first flow segment 211, the flow rate of the first flow segment 211 is smaller and the pressure is larger, and the liquid medicine flows through the first flow segment 211 for a longer time, which is beneficial to the discharge of air bubbles.

[0031] In some embodiments of the present invention, the exhaust structure further includes a membrane-like member 220 and a convex block 240. Both the membrane-like member 220 and the convex block 240 are connected to the box body 100; The membrane-like member 220 and the gas-liquid separation membrane 230 are spaced and laminated. A first flow segment 211 is defined between the membrane-like member 220 and the gas-liquid separation membrane 230. A second flow segment is defined between the membrane-like member 220 and the convex block 240. The membrane-like member 220 is disposed on the outer surface of the box body 100. Refer to Figure 4, the edge of the membranous member 220 can be fixed on the box body 100 by bonding, so that the membranous member 220 hermetically covers the outer surface of the box body 100, and the membranous member 220 is the outer wall of the box body 100; the membranous member 220 has a certain elasticity. When the pressure in the flow channel increases, the membranous member 220 can expand outwards, increasing the thickness of the flow channel and improving the flow rate. In addition, the bump 240 is arranged inside the box body 100, and the surface of the membranous member 220 can be relatively flat, which is convenient for attaching heating elements such as electric heating sheets to the outside of the membranous member 220 to heat the liquid medicine. The thickness of the membranous member 220 can be 0.1 mm to 0.15 mm. With a smaller thickness and high heat transfer efficiency, the thickness of the first flow section 211 is less than 0.5 mm. The first flow section 211 is stacked with the membranous member 220, and the liquid medicine or blood in the first flow section 211 heats up quickly, enabling large-flow heating.

[0032] In some embodiments of the present invention, the membranous member 220 is a transparent film. The membranous member 220 can be a plastic film, so that it can be seen from the outside whether there are bubbles in the flow channel, whether the bubbles are discharged, and whether the gas-liquid separation membrane 230 is damaged, etc., which is convenient for medical staff to adjust the position of the blood transfusion and infusion exhaust box in time or replace the blood transfusion and infusion exhaust box.

[0033] In some embodiments of the present invention, the blood transfusion and infusion exhaust box further includes a heating device 400. The heating device 400 is arranged outside the box body 100, and the heating device 400 has a heating surface, and the heating surface is attached to the membranous member 220. The heating device 400 can be installed on an external support frame or can be detachably connected to the box body 100; the heating device 400 can be an electric heating plate, an electric heating wire or other suitable devices; when the number of exhaust structures is two, the number of heating devices 400 can be two, and the blood transfusion and infusion exhaust box is arranged between the two heating devices 400; it can heat the liquid medicine when needed, and the heat exchange area between the liquid medicine in the flow channel and the heating device 400 is large, and the heating efficiency is high.

[0034] In some embodiments of the present invention, the box body 100 is provided with two exhaust structures, and the gas-liquid separation membranes 230 of the two exhaust structures are stacked layer by layer at intervals front and back, and the exhaust port 130 is arranged between the two exhaust structures. The two exhaust structures are arranged symmetrically about the front and back. By setting two exhaust structures, the infusion speed is increased. The two exhaust structures are stacked and share the exhaust port 130, and the space utilization rate is high, which is beneficial to reducing the volume of the blood transfusion and infusion exhaust box.

[0035] In some embodiments of the present invention, a liquid inlet cavity 111 and a liquid outlet cavity 121 are arranged inside the box body 100. The liquid inlet 110 and the flow channels of the two exhaust structures are both communicated with the liquid inlet cavity 111, and the liquid outlet 120 and the flow channels of the two exhaust structures are both communicated with the liquid outlet cavity 121. Refer to Figure 2, the liquid inlet 110, the liquid inlet chamber 111, the first flow section 211, the second flow section, the liquid outlet chamber 121, and the liquid outlet 120 are arranged from top to bottom in sequence. The top of the liquid inlet chamber 111 is connected to the liquid inlet 110, the bottom of the liquid inlet chamber 111 is connected to the two first flow sections 211, and a diversion structure can be arranged in the liquid inlet chamber 111 to enable the liquid medicine to flow smoothly into the two first flow sections 211; the top of the liquid outlet chamber 121 is connected to the two second flow sections, and the bottom of the liquid outlet chamber 121 is connected to the liquid outlet 120; the liquid inlet chamber 111 and the liquid outlet chamber 121 can play a role in stabilizing the pressure, making the pressures in the two flow channels approximately equal, and the forces on the components of the blood transfusion and infusion air exhaust box are relatively balanced, and the structure is stable.

[0036] In some embodiments of the present invention, an exhaust chamber is provided in the box body 100. At least one exhaust port 130 is provided on the side wall of the exhaust chamber. A support grid 300 is provided in the exhaust chamber. The support grid 300 is arranged between the two gas-liquid separation membranes 230. The support grid 300 has a plurality of grid cavities 310, and each grid cavity 310 is connected to at least one exhaust port 130. Refer to Figure 4 , part of the exhaust chamber is the left chamber, part of the exhaust chamber is the right chamber, the left wall of the left chamber is provided with an exhaust port 130, and the right wall of the right chamber is provided with an exhaust port 130; the support grid 300 can simultaneously support the two gas-liquid separation membranes 230, preventing the gas-liquid separation membranes 230 from collapsing inward and enabling the flow channels to maintain a relatively thin sheet shape. The two exhaust structures share one support grid 300, and the space utilization rate is relatively high, which is beneficial to reducing the volume of the blood transfusion and infusion air exhaust box.

[0037] In some embodiments of the present invention, the box body 100 is in the shape of a cuboid. The liquid inlet 110 is provided at the top of the box body 100, the liquid outlet 120 is provided at the bottom of the box body 100, and the flow channels of the two exhaust structures are respectively arranged on the front side and the rear side of the box body 100; the exhaust port 130 is provided on the left side or the right side of the box body 100. This facilitates the use of an external heating device 400 to heat the liquid medicine in the flow channel. The heating device 400 can be attached to the front side and the rear side of the box body 100, and the liquid inlet 110, the liquid outlet 120, and the exhaust port 130 will not interfere with the setting of the heating device 400.

[0038] In some embodiments of the present invention, the liquid inlet 110, the first flow section 211, the second flow section, and the liquid outlet 120 are arranged in sequence from top to bottom. In this way, when infusing, the liquid medicine can flow from top to bottom through the first flow section 211 and the second flow section. In the first flow section 211, the air bubbles can move upward under the action of buoyancy, which is equivalent to extending the time for the air bubbles to flow through the first flow section 211, and is beneficial to the discharge of the air bubbles.

[0039] The above has specifically described the preferred embodiments of the present invention. However, the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent variations or substitutions without departing from the spirit of the present invention, and these equivalent variations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A blood transfusion and infusion air exhaust box, characterized in that: It includes a box body, and the box body is provided with a liquid inlet, a liquid outlet and at least one exhaust port; the box body is provided with at least one exhaust structure, and the exhaust structure includes a flow channel and a gas-liquid separation membrane. The liquid inlet and the liquid outlet are communicated with two ends of the flow channel. The flow channel is in a sheet shape, and the flow channel and the gas-liquid separation membrane are stacked; the exhaust port is communicated with the flow channel, and the gas-liquid separation membrane is arranged between the exhaust port and the flow channel; The flow channel has a first flow section and a second flow section. The liquid inlet, the first flow section, the second flow section and the liquid outlet are sequentially communicated. The flow area of the second flow section is smaller than that of the first flow section. The gas-liquid separation membrane is arranged between the first flow section and the exhaust port; The exhaust structure further includes a membrane-like member and a convex block, and both the membrane-like member and the convex block are connected to the box body; the membrane-like member and the gas-liquid separation membrane are stacked at intervals. A first flow section is defined between the membrane-like member and the gas-liquid separation membrane, and a second flow section is defined between the membrane-like member and the convex block. The membrane-like member is arranged on the outer surface of the box body; The box body is provided with two such exhaust structures, and the gas-liquid separation membranes of the two exhaust structures are stacked at intervals front and back. The exhaust port is arranged between the two exhaust structures, and the two exhaust structures share the exhaust port; The blood transfusion and infusion exhaust box further includes a heating device, and the heating device is arranged outside the box body. The heating device has a heating surface, and the heating surface is attached to the membrane-like member; An exhaust cavity is arranged inside the box body. At least one exhaust port is arranged on the side wall of the exhaust cavity. A support grid is arranged inside the exhaust cavity, and the support grid is arranged between the two gas-liquid separation membranes. The support grid has a plurality of grid cavities, and each grid cavity is communicated with at least one exhaust port.

2. The blood transfusion and infusion air vent box according to claim 1, wherein: The membrane-like member is a transparent thin film.

3. The blood transfusion and infusion air exhaust box according to claim 1, characterized in that: An inlet cavity and an outlet cavity are arranged inside the box body. The liquid inlet and the flow channels of the two exhaust structures are both communicated with the inlet cavity, and the liquid outlet and the flow channels of the two exhaust structures are both communicated with the outlet cavity.

4. The blood transfusion and infusion air venting box according to claim 1, characterized in that: The box body is in a cuboid shape. The liquid inlet is arranged at the top of the box body, the liquid outlet is arranged at the bottom of the box body, and the flow channels of the two exhaust structures are respectively arranged at the front side and the rear side of the box body; the exhaust port is arranged on the left side or the right side of the box body.

5. The blood transfusion and infusion air exhaust box according to claim 1, characterized in that: The liquid inlet, the first flow section, the second flow section and the liquid outlet are arranged sequentially from top to bottom.

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