Oxygenator

Abstract

The invention provides an oxygenator, and belongs to the technical field of oxygenators, the oxygenator comprises an oxygenation shell, two ends of the oxygenation shell are respectively provided with a sealing cover I and a sealing cover II in a sealing manner, two ends of the oxygenation shell are respectively and fixedly connected with a group of fixing seats I, and the sealing cover I and the sealing cover II are respectively and fixedly connected with a group of fixing seats II; the first fixing seats and the second fixing seats are arranged in a one-to-one correspondence mode, and the first fixing seats and the second fixing seats are connected through assembly parts. The assembly part comprises a cover body I and an embedding unit; a magnet is fixedly connected in the first cover body, an iron block is fixedly connected in the second cover body, a connecting unit is arranged on the side, close to the first cover body, of the pulling unit, the return unit is connected with the pulling unit, a fixed connecting unit is arranged in the pulling unit, and a rotating unit is arranged on the peripheral wall of the pulling unit. The oxygenator solves the problems that leakage is caused by looseness of an existing oxygenator in the using process, stable assembly between the sealing cover and the oxygenation shell cannot be guaranteed, and normal use of the oxygenator cannot be guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of oxygenator technology, and specifically relates to an oxygenator. Background Technology

[0002] A membrane oxygenator is a medical device that replaces the lungs during cardiac arrest. It regulates the O2 and CO2 levels in the blood and is an essential medical device for cardiovascular surgery, as well as for treating acute respiratory illnesses and awaiting lung transplantation. Its principle involves drawing venous blood from the body, passing it through the membrane oxygenator's temperature-controlled oxygenation system for O2 and CO2 exchange, transforming it into arterial blood, and then returning it to the patient's arterial system. This maintains the oxygenated blood supply to the body's organs and tissues, temporarily replacing the function of the lungs during surgery. Simultaneously, it provides doctors with a quiet, bloodless, and clear surgical environment to facilitate the procedure.

[0003] Existing technology CN219743501U discloses an oxygenator, including an oxygenation shell, a first sealing cover at the top of the oxygenation shell, and a second sealing cover at the bottom of the oxygenation shell. An axially arranged spindle is disposed inside the oxygenation shell, and an oxygenation cavity is formed between the outer wall of the spindle and the inner wall of the oxygenation shell. An oxygenation membrane is disposed within the oxygenation cavity. A bleeding port communicating with the oxygenation cavity is provided at the bottom of the oxygenation shell. An oxygen inlet communicating with the oxygenation cavity is provided on the first sealing cover, and an oxygenated gas outlet communicating with the oxygenation cavity is provided on the second sealing cover. The spindle has an axially penetrating blood inlet channel, the top of which communicates with the oxygenation cavity. An axially inserted blood inlet connector is provided on the second sealing cover, a portion of which extends into the blood inlet channel, and the other portion of which remains outside the second sealing cover. The spindle also has a temperature-changing cavity located on the outer periphery of the blood inlet channel, and at least one opening communicating with the temperature-changing cavity is provided on the second sealing cover. The first and second sealing covers in this oxygenator are both detachably assembled with the oxygenation shell. This is achieved by using an L-shaped groove pre-drilled on the sealing cover and a limiting rod fixed on the oxygenation shell. The assembly of the sealing cover and the oxygenation shell is completed by engaging the limiting rod in the corresponding L-shaped groove. However, this assembly method may loosen during the use of the oxygenator, causing leakage. It cannot guarantee a stable assembly between the sealing cover and the oxygenation shell, and thus cannot guarantee the normal use of the oxygenator. Summary of the Invention

[0004] This invention provides an oxygenator, the purpose of which is to solve the problem that existing oxygenators may loosen during use, causing leakage, and cannot guarantee a stable assembly between the sealing cap and the oxygenator shell, thus failing to ensure the normal use of the oxygenator.

[0005] This invention provides an oxygenator, comprising an oxygenation shell, with a sealing cover 1 and a sealing cover 2 respectively sealed at both ends of the oxygenation shell, and a set of fixing seats 1 fixedly connected to each end of the oxygenation shell, and a set of fixing seats 2 fixedly connected to each of the sealing cover 1 and the sealing cover 2, with fixing seats 1 and fixing seats 2 arranged one-to-one, and the fixing seats 1 and fixing seats 2 connected to each other via an assembly. The assembly includes a housing and a connecting unit; A magnet is fixedly connected to the first cover. One side of the inside of the first cover is fixedly connected to the first connecting post. The first connecting post is fixedly connected to the first fixed base. The second cover is installed on the side of the first cover that is farther away from the first connecting post. The second cover is fixedly connected to the second fixed base. An iron block is fixedly connected to the second cover. The iron block and the magnet are interlocked and attracted to each other. A lever unit is installed on the outer side of the second cover that is close to the first cover. A connecting unit is installed on the side of the lever unit that is close to the first cover. A return unit is installed on the side of the second cover that is farther away from the first cover. The return unit is connected to the lever unit. A fixed unit is installed in the lever unit. A rotating unit is installed on the peripheral wall of the lever unit. The connecting unit includes a connecting cylinder and a pressing table. The connecting cylinder is fixedly connected to the wall of the first cover. A groove is reserved on the side of the connecting cylinder near the second cover. The pressing table is fixedly connected in the groove. The connecting unit and the pressing table are connected. A locking unit is installed on the peripheral wall of the connecting cylinder. The lever unit includes a rotating cylinder. The rotating cylinder is screwed onto the outer wall of the second cover near the side of the first cover. A ring-shaped opening is reserved on the outer wall of the rotating cylinder, and a traction bar is installed in the ring-shaped opening. The connecting unit includes an arched plate. The rotating cylinder is fixedly connected to the arched plate on the side farther from the cover. The arched plate is located in the reserved opening on the left side of the connecting cylinder. A constraint platform is fixedly connected to the side wall of the arched plate. One side of the constraint platform and one side of the pressure platform are in contact with each other. The fixed connection unit includes a bending opening. A bending opening is reserved on the peripheral wall of the rotating cylinder. The support cylinder is fixedly connected to the left side inside the bending opening. An insert block is movably installed on the right side inside the bending opening. A traction wire is movably installed in the support cylinder. One side of the traction wire is fixedly connected to the insert block, and the other side of the traction wire is fixedly connected to the traction bar. A spiral beryllium copper wire II is wound around the outside of the traction wire. One side of the spiral beryllium copper wire II is fixedly connected to the support cylinder, and the other side of the spiral beryllium copper wire II is fixedly connected to the insert block. An insert interface I is reserved in the center of the pressure table, and the insert block is inserted into the insert interface I.

[0006] Furthermore, the return unit includes an assembly cylinder and a spiral beryllium copper wire 1. The assembly cylinder is fixedly connected to the outer wall of the cover body 2 on the side farther away from the cover body 1. The spiral beryllium copper wire 1 is clamped to the outer wall of the cover body 2. One side of the spiral beryllium copper wire 1 is fixedly connected to the rotating cylinder, and the other side of the spiral beryllium copper wire 1 is fixedly connected to the assembly cylinder.

[0007] Furthermore, the rotating unit includes a lever cylinder, which is screwed onto the peripheral wall of the rotating cylinder. A traction bar is fixedly connected to the lever cylinder, and several lever blocks are fixedly connected at equal intervals to the peripheral wall of the lever cylinder.

[0008] Furthermore, the locking unit includes a groove, and a groove is reserved on the peripheral wall of the connecting cylinder. A fitting seat is movably installed in the groove. Several spiral beryllium copper wires are fixedly connected at equal intervals at the lower end of the fitting seat. The other side of the spiral beryllium copper wires is fixedly connected to the inner wall of the groove. The spiral beryllium copper wires deform when compressed or pulled under the action of external force, and can return to their original shape axially when the external force is removed. A pressure block is fixedly connected to the top of the fitting seat. A fitting interface is reserved at the top inside the cylinder, and the fitting seat is fitted into the fitting interface.

[0009] Furthermore, a silicone tube is fixedly connected to the side of the rotating cylinder that is farther away from the cover body one, and an assembly cylinder is fixedly connected to the peripheral wall of the cover body two, with the silicone tube fixedly connected to the peripheral wall of the assembly cylinder.

[0010] Furthermore, a guide seat is fixedly connected to the peripheral wall of the connecting cylinder, and the pressing block is movably installed in the guide seat.

[0011] Furthermore, a pulling cylinder is fixed to the peripheral wall of the side of the cover that is farther away from the second cover, and several patterns are reserved at equal intervals on the peripheral wall of the pulling cylinder.

[0012] The beneficial effects of this invention are as follows: The present invention achieves initial locking through the cooperation of the constraint table and the pressure table, assists in the engagement of the interlocking block and the interlocking interface to form a second locking, and coordinates the locking unit to lock the lever cylinder multiple times, thus forming a stable connection structure. The leak-proof structure is formed by the silicone tube and the assembly tube to protect the internal parts. The cooperation of the guide seat and the pressure block ensures that the parts can still maintain stable movement under repeated use, ensuring the long-term use of the structure. The evenly spaced arrangement of the lever blocks allows for quick disassembly by rotating the lever cylinder, greatly improving ease of use.

[0013] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention; Figure 2 This is a schematic diagram of the assembly structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the interlocking unit structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the magnet structure in an embodiment of the present invention; Figure 5 This is an embodiment of the present invention. Figure 4 A magnified structural diagram at point M; Figure 6 This is a schematic diagram of the silicone tube structure according to an embodiment of the present invention; Figure 7 This is an embodiment of the present invention. Figure 6 A magnified structural diagram at point N; Figure 8 This is a schematic diagram of the structure at the bend in an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure at the rotating cylinder in an embodiment of the present invention; Reference numerals: 1. Oxygenated shell; 2. Sealing cover one; 3. Sealing cover two; 4. Fixing base one; 5. Fixing base two; 6. Assembly component; 61. Cover one; 62. Interlocking unit; 621. Connecting cylinder; 622. Pressing platform; 63. Connecting unit; 631. Arched plate; 632. Constraint platform; 64. Actuating unit; 641. Rotating cylinder; 642. Ring-shaped opening; 643. Traction bar; 65. Return unit; 651. Assembly cylinder; 652. Spiral beryllium copper wire one; 66. Fixing unit; 661. Bending opening; 662 663. Supporting cylinder; 664. Inserting block; 665. Traction line; 666. Spiral beryllium copper wire II; 667. Inserting interface I; 68. Rotating unit; 69. Turning cylinder; 60. Turning block; 610. Locking unit; 611. Trench; 62. Inserting seat; 63. Inserting interface II; 64. Spiral beryllium copper wire III; 65. Pressing block; 666. Silicone cylinder; 617. Assembly cylinder; 618. Guide seat; 619. Magnet; 610. Connecting post I; 611. Cover II; 612. Iron block; 613. Pulling cylinder. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages 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. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0016] Reference Figures 1-9 This invention provides an oxygenator comprising an oxygenation shell 1, with a sealing cover 2 and a sealing cover 3 respectively sealed at both ends of the oxygenation shell 1. A set of fixing seats 4 are fixedly connected to each end of the oxygenation shell 1, and a set of fixing seats 5 are fixedly connected to the sealing cover 2 and the sealing cover 3 respectively. The fixing seats 4 and the fixing seats 5 are arranged in a one-to-one correspondence, and the fixing seats 4 and the fixing seats 5 are connected to each other via an assembly 6.

[0017] It should also be noted that the oxygenation shell 1, sealing cover 1 2 and sealing cover 2 3 are all existing technologies and will not be described in detail here.

[0018] By installing assembly 6, not only can the oxygenation shell 1 be quickly assembled and disassembled with sealing cover 1 and sealing cover 2 and sealing cover 2 and sealing cover 3, but the stability of the assembly between the oxygenation shell 1 and sealing cover 1 and sealing cover 2 and sealing cover 2 and sealing cover 3 can also be guaranteed.

[0019] Assembly 6 includes a cover 61 and a connecting unit 62; A magnet 612 is fixedly connected to the cover 61. A connecting post 613 is fixedly connected to one side of the cover 61. The connecting post 613 is fixedly connected to the fixing seat 4. A cover 614 is installed on the side of the cover 61 that is farther away from the connecting post 613. The cover 614 is fixedly connected to the fixing seat 5. An iron block 615 is fixedly connected to the cover 614. The iron block 615 and the magnet 612 are interlocked and attracted to each other. A lever unit 64 is installed on the outer side of the cover 614 that is close to the cover 61. A connecting unit 63 is installed on the side of the lever unit 64 that is close to the cover 61. A return unit 65 is installed on the side of the cover 614 that is farther away from the cover 61. The return unit 65 is connected to the lever unit 64. A fixing unit 66 is installed in the lever unit 64. A rotating unit 67 is installed on the peripheral wall of the lever unit 64. Among them, a pulling cylinder 617 is fixedly connected to the peripheral wall of the side of the cover 61 that is farther away from the cover 614. The peripheral wall of the pulling cylinder 617 has several patterns reserved at equal intervals. The installation of the pulling cylinder 617 makes it convenient for the user to pull the cover 61 to perform changes.

[0020] The lever unit 64 includes a rotating cylinder 641, a ring-shaped opening 642, and a traction bar 643. The rotating cylinder 641 is screwed onto the outer wall of the second cover 614 near the first cover 61. The ring-shaped opening 642 is reserved on the outer wall of the rotating cylinder 641, and the traction bar 643 is installed in the ring-shaped opening 642. The connecting unit 63 includes an arched piece 631 and a constraint platform 632. The side of the rotating cylinder 641 that is farther away from the cover body 614 is fixed to the arched piece 631. The arched piece 631 is located in the opening reserved on the left side of the connecting cylinder 621. The constraint platform 632 is fixed to the side wall of the arched piece 631. One side of the constraint platform 632 and one side of the pressure platform 622 are in contact with each other. The return unit 65 includes an assembly cylinder 651 and a spiral beryllium copper wire 652. The assembly cylinder 651 is fixed to the outer wall of the cover body 614 on the side farther from the cover body 61. The spiral beryllium copper wire 652 is clamped to the outer wall of the cover body 614. One side of the spiral beryllium copper wire 652 is fixed to the rotating cylinder 641, and the other side of the spiral beryllium copper wire 652 is fixed to the assembly cylinder 651. The spiral beryllium copper wire 652 deforms when rotating under the action of external force, and can be restored circumferentially when the external force is removed. Among them, the rotating cylinder 641 is fixedly connected to the side of the cover 61 that is farther away from the cover 61. The assembly cylinder 610 is fixedly connected to the peripheral wall of the cover 614. The silicone cylinder 69 is fixedly connected to the peripheral wall of the assembly cylinder 610. The installation of the silicone cylinder 69 protects the spiral beryllium copper wire 652.

[0021] The fixed connection unit 66 includes a bending opening 661, a support cylinder 662, a connecting block 663, a traction wire 664, a spiral beryllium copper wire 665, and a connecting interface 666. The bending opening 661 is pre-formed on the peripheral wall of the rotating cylinder 641. The support cylinder 662 is fixedly connected to the left side inside the bending opening 661, and the connecting block 663 is movably installed on the right side inside the bending opening 661. The traction wire 664 is movably installed in the support cylinder 662, and one side of the traction wire 664 is fixedly connected to the connecting block 663. The other side of 664 is fixedly connected to the traction bar 643. The outer side of the traction line 664 is wrapped with a spiral beryllium copper wire 665. One side of the spiral beryllium copper wire 665 is fixedly connected to the support cylinder 662. The other side of the spiral beryllium copper wire 665 is fixedly connected to the interlocking block 663. Under the action of external force, the spiral beryllium copper wire 665 deforms when compressed or pulled. It can return to its original shape axially when the external force is removed. The center of the compression platform 622 is reserved with an interlocking interface 666. The interlocking block 663 is interlocked in the interlocking interface 666. The rotating unit 67 includes a lever cylinder 671 and lever blocks 672. The lever cylinder 671 is screwed onto the peripheral wall of the rotating cylinder 671. The traction bar 643 is fixedly connected to the lever cylinder 671. Several lever blocks 672 are fixedly connected at equal intervals to the peripheral wall of the lever cylinder 671. Through the installation of the rotating unit 67, the user can rotate the lever cylinder 671 during operation to move the traction bar 643. The movement of the traction bar 643 pulls the traction line 664 to perform a movement. The movement of the traction line 664 pulls the interlocking block 663 to move to the left, moving it out of the interlocking interface 666 reserved in the center of the pressing table 622. After moving, rotate the lever 671 to make the rotating cylinder 641 rotate. The rotating cylinder 641 rotates and pulls the constraint table 632 to rotate forward and separate from the pressure table 622. After separation, the magnet 612 and the iron block 615 can be quickly disassembled. Through the installation of the fixing unit 66, the rotating cylinder 641 and the pressure table 622 are connected. The installed return unit 65 supports the rotating cylinder 641. Through the connection of the constraint table 632 and the pressure table 622, the first cover 61 and the second cover 614 can be connected. The installed lever 64 pulls the connecting unit 63 to rotate. The connecting unit 62 includes a connecting cylinder 621 and a pressing table 622. The connecting cylinder 621 is fixedly connected to the wall of the first cover 61. A groove is reserved on the side of the connecting cylinder 621 near the second cover 614, and the pressing table 622 is fixedly connected in the groove. The connecting unit 66 and the pressing table 622 are connected. A locking unit 68 is installed on the peripheral wall of the connecting cylinder 621. The locking unit 68 includes a groove 681, a connecting seat 682, a second connecting interface 683, a spiral beryllium copper wire 684, and a pressing block 685. The groove 681 is reserved on the peripheral wall of the connecting cylinder 621, and the connecting seat 622 is movably installed in the groove 681. 82. Several spiral beryllium copper wires 684 are fixedly connected at equal intervals at the lower end of the fitting seat 682. The other side of the spiral beryllium copper wires 684 is fixedly connected to the inner wall of the channel 681. The spiral beryllium copper wires 684 deform when compressed or pulled under the action of external force, and can return to their original shape axially when the external force is removed. The top of the fitting seat 682 is fixedly connected to the pressure block 685. The top of the inside of the lever cylinder 671 is reserved with the fitting interface 683. The fitting seat 682 is fitted into the fitting interface 683. The lever cylinder 671 is constrained by the installed locking unit 68 and connected by the installed fitting unit 62 and connecting unit 63. In this process, a guide seat 611 is fixedly connected to the peripheral wall of the connecting cylinder 621, and a pressing block 685 is movably installed in the guide seat 611, thereby constraining the pressing block 685 through the installed guide seat 611.

[0022] The specific implementation method is as follows: When assembling the oxygen shell 1 with the sealing cover 2 or the sealing cover 3, when connecting the cover 61 and the cover 614, the magnet 612 and the iron block 615 quickly attract each other. At this moment, the pressing platform 622 on the connecting cylinder 621 and the constraint platform 632 on the rotating cylinder 641 touch. As the fitting operation ends, the deformation of the spiral beryllium copper wire 652 causes the rotating cylinder 641 to rotate, and the constraint platform 632 on the traction arch plate 631 is fitted into the space between the pressing platform 622 and the connecting cylinder 621. This achieves the initial locking purpose, and the insert block 663 in the fixing unit 66, with the cooperation of the spiral beryllium copper wire 665, automatically inserts into the insert interface 666 on the pressing table 622, achieving the purpose of locking the connection again. Then, the insert seat 682 on the locking unit 68 moves upward under the deformation force of the spiral beryllium copper wire 684 and inserts into the insert interface 683 on the lever cylinder 671 to prevent the lever cylinder 671 from being accidentally rotated. This structure can ensure the stability of the connection to prevent loosening during use. When disassembling the oxygen housing 1 and sealing cap 1 or sealing cap 2 or sealing cap 3, the user presses the insert 682 downwards via the pressure block 685 to move it out of the insert interface 2 683, thus releasing the stop. Then, the user rotates the lever 671 via the lever 672, causing the lever 671 to rotate and move the traction bar 643. The traction bar 643 moves and pulls the traction line 664, thereby removing the insert 663 from the insert interface 1 666. Then, the user rotates the lever 671 to pull the rotating lever 641 to press the insert 682. The resistance of the spiral beryllium copper wire 652 causes the constraint table 632 to move away from the space between the pressure table 622 and the connecting cylinder 621. At this time, the magnet 612 and the iron block 615 can be pulled apart. During use, the silicone tube 69 and the assembly tube 610 form a leak-proof structure to protect the spiral beryllium copper wire 652 and other parts inside. At the same time, the grooves on the pulling tube 617 are reserved for easy use and ensure smooth use. Not only is the connection stable, but the assembly and disassembly are also very convenient.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An oxygenator, comprising an oxygenation shell, wherein a sealing cover first and a sealing cover second are respectively sealed at both ends of the oxygenation shell, characterized in that, Each end of the oxygenation shell is fixedly connected to a set of fixing seats one, and each of the sealing cap one and sealing cap two is fixedly connected to a set of fixing seats two. Fixing seats one and fixing seats two are provided in a one-to-one correspondence, and the fixing seats one and fixing seats two are connected by an assembly component. The assembly includes a housing and a connecting unit; A magnet is fixedly connected to the first cover. One side of the inside of the first cover is fixedly connected to the first connecting post. The first connecting post is fixedly connected to the first fixed base. The second cover is installed on the side of the first cover that is farther away from the first connecting post. The second cover is fixedly connected to the second fixed base. An iron block is fixedly connected to the second cover. The iron block and the magnet are interlocked and attracted to each other. A lever unit is installed on the outer side of the second cover that is close to the first cover. A connecting unit is installed on the side of the lever unit that is close to the first cover. A return unit is installed on the side of the second cover that is farther away from the first cover. The return unit is connected to the lever unit. A fixed unit is installed in the lever unit. A rotating unit is installed on the peripheral wall of the lever unit. The connecting unit includes a connecting cylinder and a pressing table. The connecting cylinder is fixedly connected to the wall of the first cover. A groove is reserved on the side of the connecting cylinder near the second cover. The pressing table is fixedly connected in the groove. The connecting unit and the pressing table are connected. A locking unit is installed on the peripheral wall of the connecting cylinder. The lever unit includes a rotating cylinder. The rotating cylinder is screwed onto the outer wall of the second cover near the side of the first cover. A ring-shaped opening is reserved on the outer wall of the rotating cylinder, and a traction bar is installed in the ring-shaped opening. The connecting unit includes an arched plate. The rotating cylinder is fixedly connected to the arched plate on the side farther from the cover. The arched plate is located in the reserved opening on the left side of the connecting cylinder. A constraint platform is fixedly connected to the side wall of the arched plate. One side of the constraint platform and one side of the pressure platform are in contact with each other. The fixed connection unit includes a bending opening. A bending opening is reserved on the peripheral wall of the rotating cylinder. The support cylinder is fixedly connected to the left side inside the bending opening. An insert block is movably installed on the right side inside the bending opening. A traction wire is movably installed in the support cylinder. One side of the traction wire is fixedly connected to the insert block, and the other side of the traction wire is fixedly connected to the traction bar. A spiral beryllium copper wire II is wound around the outside of the traction wire. One side of the spiral beryllium copper wire II is fixedly connected to the support cylinder, and the other side of the spiral beryllium copper wire II is fixedly connected to the insert block. An insert interface I is reserved in the center of the pressure table, and the insert block is inserted into the insert interface I.

2. An oxygenator according to claim 1, characterized in that: The return unit includes an assembly cylinder and a spiral beryllium copper wire 1. The assembly cylinder is fixedly connected to the outer wall of the cover body 2 on the side farther away from the cover body 1. The spiral beryllium copper wire 1 is clamped to the outer wall of the cover body 2. One side of the spiral beryllium copper wire 1 is fixedly connected to the rotating cylinder, and the other side of the spiral beryllium copper wire 1 is fixedly connected to the assembly cylinder.

3. An oxygenator according to claim 1, characterized in that: The rotating unit includes a lever cylinder, which is screwed onto the peripheral wall of the rotating cylinder. A traction bar is fixed in the lever cylinder, and several lever blocks are fixed at equal intervals on the peripheral wall of the lever cylinder.

4. An oxygenator according to claim 3, characterized in that: The locking unit includes a groove. A groove is reserved on the peripheral wall of the connecting cylinder. A locking seat is movably installed in the groove. Several spiral beryllium copper wires are fixedly connected at equal intervals at the lower end of the locking seat. The other side of the spiral beryllium copper wires is fixedly connected to the inner wall of the groove. The spiral beryllium copper wires deform when compressed or pulled under the action of external force and can return to their original shape axially when the external force is removed. A pressure block is fixedly connected to the top of the locking seat. A locking interface is reserved at the top inside the cylinder. The locking seat is locked into the locking interface.

5. An oxygenator according to claim 1, characterized in that: A silicone tube is fixed to the side of the rotating cylinder that is farther away from the cover body one. An assembly cylinder is fixed to the peripheral wall of the cover body two, and the silicone tube is fixed to the peripheral wall of the assembly cylinder.

6. An oxygenator according to claim 4, characterized in that: A guide seat is fixed to the peripheral wall of the connecting cylinder, and the pressure block is movably installed in the guide seat.

7. An oxygenator according to claim 1, characterized in that: A pulling cylinder is fixed to the peripheral wall of the side of the cover that is farther away from the cover. Several patterns are reserved at equal intervals on the peripheral wall of the pulling cylinder.

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