Blood oxygenation structure

Abstract

The utility model belongs to the technical field of medical instruments, and discloses a blood oxygenation structure which comprises a shell, a blood inlet, a blood outlet, an air inlet and an air outlet, the blood inlet, the blood outlet, the air inlet and the air outlet are communicated with the shell, a fiber membrane layer is further arranged in the shell, an oxygenation cylinder with two open ends is rotatably connected in the shell, and the fiber membrane layer is arranged in the oxygenation cylinder. A rotating gear ring is arranged on the outer wall of the oxygenation cylinder, a motor is arranged on the shell, a sector gear is fixed on an output shaft of the motor, and the sector gear is meshed with the rotating gear ring. The motor drives the fan-shaped gear to rotate, and when the fan-shaped gear is meshed with the rotating gear ring, the oxygenation cylinder is driven to rotate, so that the rotation of the fibrous membrane layer is realized, and the condition that blood is coagulated in the fibrous membrane layer is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a blood oxygenation structure. Background Art

[0002] Extracorporeal membrane oxygenation (ECMO) is an extracorporeal technique that can provide extended cardiac and respiratory support for people whose hearts and lungs are unable to provide sufficient gas exchange or perfusion to sustain life. The technology of extracorporeal membrane oxygenation mainly originates from extracorporeal circulation, which provides short-term support and inhibits natural circulation. After the blood is oxygenated through the oxygenation structure and then introduced into the body, oxygen is transferred to the venous blood, and carbon dioxide is removed from the venous blood, ultimately achieving the purpose of converting venous blood into arterial blood.

[0003] The blood oxygenation structure realizes the oxygenation of blood and oxygen by allowing the blood and oxygen to flow through the fiber tube, and then introduces it into the body. The blood flows by itself in the fiber tube, and there may be a situation of flow stagnation. Long-term stagnation is likely to cause blood coagulation, resulting in thrombosis, and thus affecting the use. Summary of the Utility Model

[0004] The utility model aims to provide a blood oxygenation structure, and the utility model aims to solve the technical problems existing in the prior art.

[0005] To achieve the above object, the utility model provides the following technical solution: a blood oxygenation structure, including a housing, a blood inlet, a blood outlet, an air inlet, and an air outlet communicated with the housing. A fiber membrane layer is further provided in the housing. An oxygenation cylinder with both ends open is rotatably connected in the housing, and the fiber membrane layer is arranged in the oxygenation cylinder. A rotating gear ring is provided on the outer wall of the oxygenation cylinder, and a motor is provided on the housing. A sector gear is fixed on the output shaft of the motor, and the sector gear meshes with the rotating gear ring.

[0006] Advantages of this technical solution:

[0007] When the motor drives the sector gear to rotate, when the sector gear meshes with the rotating gear ring, the oxygenation cylinder rotates accordingly, and then drives the fiber membrane layer to rotate. Therefore, the blood will rotate during oxygenation, which can reduce the occurrence of blood coagulation and further reduce the probability of thrombosis.

[0008] In another preferred embodiment of the utility model, the oxygenation cylinder includes a large-diameter portion in the middle and small-diameter portions at both ends of the large-diameter portion. The rotating gear ring is arranged on the outer periphery of the large-diameter portion. A dial block is provided at the top of the large-diameter portion, and a support block is provided in the housing. A spring is provided between the dial block and the support block.

[0009] Advantages: When the oxygenation cylinder rotates, it compresses the spring. When the sector gear and the rotating gear ring are disengaged, it resets under the action of the spring, thereby realizing the reciprocating rotation of the oxygenation cylinder.

[0010] In another preferred embodiment of the present utility model, a flow dividing plate is provided between the fiber membrane layer and the blood inlet in the housing, and a plurality of flow dividing holes are evenly distributed on the flow dividing plate.

[0011] Beneficial effects: The flow dividing plate and the flow dividing holes can achieve the flow division of blood, thereby improving the uniformity of blood flow and the oxygenation effect.

[0012] In another preferred embodiment of the present utility model, the flow dividing plate is located in the oxygenation cylinder, and the flow dividing plate is fixed to the inner wall of the housing.

[0013] Beneficial effects: The flow dividing plate is placed in the oxygenation cylinder, which is convenient for flow division.

[0014] In another preferred embodiment of the present utility model, a filter screen is provided between the fiber membrane layer and the blood outlet in the housing.

[0015] Beneficial effects: The filter screen can filter the blood and puncture the bubbles in the blood.

[0016] In another preferred embodiment of the present utility model, a heating cavity is provided on the outer periphery of the blood inlet on the housing, and a water inlet and a water outlet are provided in the heating cavity.

[0017] Beneficial effects: By adding hot water through the water inlet, the blood introduced into the oxygenation structure can be heated, so that the blood maintains a certain temperature, thereby reducing blood coagulation and reducing the stimulation caused when the blood enters the body.

[0018] In another preferred embodiment of the present utility model, an inlet pipe is connected to the blood inlet, the inlet pipe passes through the heating cavity, and the part of the inlet pipe located in the heating cavity is spiral.

[0019] Beneficial effects: The inlet pipe is spirally arranged, which can extend the flow path, thereby improving the heat exchange effect.

[0020] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0021] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0022] Figure 1 is a longitudinal sectional view of an embodiment of the present application.

[0023] Figure 2 is a transverse sectional view of the oxygenation cylinder in an embodiment of the present application.

[0024] The reference numerals in the drawings of the specification include: housing 1, heating chamber 2, water inlet 3, water outlet 4, inlet pipe 5, oxygenation cylinder 6, fiber membrane layer 7, motor 8, reducer 9, sector gear 10, rotating gear ring 11, block 12, support block 13, flow dividing plate 14, flow dividing holes 15, filter screen 16, spikes 17, blood outlet 18, air inlet 19, air outlet 20. Detailed implementation manners

[0025] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein 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 by referring to the drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "vertical", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0027] In the description of the present utility model, unless otherwise specified and defined, it should be noted that the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, they can be mechanical connections or electrical connections, or the internal communication of two elements. They can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] The present utility model provides a blood oxygenation structure, as Figure 1 shown. In a preferred embodiment of the present utility model, it includes a housing 1. A blood inlet is communicated with the top of the housing 1, and a blood outlet 18 is communicated with the bottom of the housing 1. A heating chamber 2 is fixed to the top end of the housing 1. A water inlet 3 is provided at the top of the heating chamber 2, and a water outlet 4 is provided at the bottom of the heating chamber 2. An inlet pipe 5 is communicated with the blood inlet. The inlet pipe 5 passes through the heating chamber 2 and is communicated with the blood inlet, and the part of the inlet pipe 5 located in the heating chamber 2 is spiral.

[0029] An oxygenation cylinder 6 with both ends open is provided in the housing 1. The oxygenation cylinder 6 includes a large-diameter section in the middle and small-diameter sections at the upper and lower ends of the large-diameter section. The middle part of the housing 1 protrudes outwards, and the large-diameter section of the oxygenation cylinder 6 is located in the protruding part. The oxygenation cylinder 6 is filled with a fiber membrane layer 7, which can be used to realize the oxygenation of blood.

[0030] A motor 8 is fixed on the protruding part of the housing 1. A speed reducer 9 is coaxially fixed on the output shaft of the motor 8, and a sector gear 10 is coaxially fixed on the output shaft of the speed reducer 9. A rotating gear ring 11 is fixed on the outer ring of the large-diameter section of the oxygenation cylinder 6, and the sector gear 10 can rotate to mesh with the rotating gear ring 11.

[0031] Combined Figure 2 As shown, a dial block 12 is provided on the upper surface of the large-diameter section of the oxygenation cylinder 6, a support block 13 is provided inside the protruding part of the housing 1, and a spring is provided between the dial block 12 and the support block 13. In this embodiment, a compression spring is used for the spring, and the specific model is set according to actual requirements.

[0032] A flow dividing plate 14 is fixed inside the top of the housing 1. The flow dividing plate 14 is located inside the oxygenation cylinder 6. A number of flow dividing holes 15 are provided on the flow dividing plate 14, which can achieve uniform flow division of the continuous pages. A connecting strip is fixed on the top of the flow dividing plate 14, and the connecting strip is fixed on the top of the housing 1, so that the flow dividing plate 14 is in contact with the oxygenation cylinder 6, but the flow dividing plate 14 does not rotate with the oxygenation cylinder 6. A filter screen 16 is also fixed at the bottom of the housing 1, and spikes 17 are provided on the top of the filter screen 16. The filter screen 16 is in contact with the bottom of the oxygenation cylinder 6.

[0033] It also includes an air inlet 19 and an air outlet 20. The air inlet 19 is located below the oxygenation cylinder 6, and the air outlet 20 is located below the flow dividing plate 14. An air inlet pipe is connected to the air inlet 19, and the air inlet pipe is connected to the housing 1. An air outlet pipe is connected to the air outlet 20, and the air outlet pipe passes through the oxygenation cylinder 6 and is connected to the oxygenation cylinder 6. The part of the air outlet pipe between the oxygenation cylinder 6 and the housing 1 is a flexible part, which can move with the rotation of the oxygenation cylinder 6, thereby facilitating the export of gas.

[0034] The specific implementation process is as follows:

[0035] Blood is introduced into the housing 1 through the introduction pipe 5 and the blood inlet. When the blood flows through the introduction pipe 5, it will complete heat exchange in the heating chamber 2, so that the blood maintains a certain temperature, which can avoid the stimulation caused by low temperature when input into the patient's body and improve the comfort of use. At the same time, it can reduce the coagulation of blood.

[0036] After the blood enters the housing 1, it accumulates on the flow dividing plate 14 and flows downward after being divided by the flow dividing holes 15. The blood can evenly enter the fiber membrane layer 7. Then, oxygen is introduced through the air inlet 19. During the flow of oxygen, it undergoes oxygenation with the blood and is then exported through the blood outlet 18. The oxygenated blood will be filtered by the filter screen 16 and then exported to reduce the bubbles in the blood. The spikes 17 on the filter screen 16 can also pierce the bubbles in the blood.

[0037] During the process of re - blood oxygenation, the motor 8 operates. By rotating the sector gear 10 to engage with the rotating gear ring 11, it can drive the oxygenation cylinder 6 to rotate. And the dial 12 squeezes the spring. When the sector gear 10 disengages from the rotating gear ring 11, under the action of the spring reset, the oxygenation cylinder 6 rotates in the reverse direction. Furthermore, the fiber membrane layer 7 rotates synchronously therewith, which can reduce the condensation of blood in the fiber membrane layer 7.

[0038] In the description of this specification, the description with reference to terms such as "preferred embodiment", "one embodiment", "some embodiments", "example", "specific example" or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0039] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A blood oxygenation structure, comprising a housing, a blood inlet, a blood outlet, an air inlet and an air outlet connected to the housing, and a fiber membrane layer is also provided in the housing, characterized in that: An oxygenation cylinder with openings at both ends is rotatably connected in the shell, and the fiber membrane layer is arranged in the oxygenation cylinder; a rotating gear ring is arranged on the outer wall of the oxygenation cylinder, and a motor is arranged on the shell. A fan gear is fixed on the output shaft of the motor, and the fan gear is meshed with the rotating gear ring.

2. A blood oxygenation structure according to claim 1, characterized in that: The oxygenation cylinder includes a large diameter part in the middle and small diameter parts at both ends of the large diameter part. The rotating gear ring is arranged on the outer periphery of the large diameter part. A shift block is arranged at the top of the large diameter part. A support block is arranged in the shell. A spring is arranged between the shift block and the support block.

3. A blood oxygenation structure according to claim 2, characterized in that: A diversion plate is arranged between the fiber membrane layer and the blood inlet in the shell, and a plurality of diversion holes are evenly distributed on the diversion plate.

4. A blood oxygenation structure according to claim 3, characterized in that: The splitter plate is located in the oxygenation cylinder, and the splitter plate is fixed to the inner wall of the shell.

5. A blood oxygenation structure according to claim 4, characterized in that: A filter screen is arranged in the shell between the fiber membrane layer and the blood outlet.

6. A blood oxygenation structure according to claim 5, characterized in that: A heating cavity is arranged on the outer periphery of the blood inlet of the shell, and a water inlet and a water outlet are arranged in the heating cavity.

7. A blood oxygenation structure according to claim 6, characterized in that: The blood inlet is connected with an introduction tube, which passes through the heating chamber, and the part of the introduction tube located in the heating chamber is spiral.

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