CN112023158B

CN112023158B - Oxygenator fixing device and modularized ECMO (electro-chemical mechanical mo) extracorporeal membrane pulmonary oxygenation trolley using same

Info

Publication number: CN112023158B
Application number: CN202010884552.9A
Authority: CN
Inventors: 张静; 于红军; 张少华; 孙杰; 李伟
Original assignee: Baosihao Medical Apparatus And Instruments Suzhou Co ltd
Current assignee: Baosihao Medical Apparatus And Instruments Suzhou Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2023-07-07
Anticipated expiration: 2040-08-28
Also published as: CN112023158A

Abstract

The invention discloses an oxygenator fixing device and a modularized ECMO external membrane lung oxygenation trolley using the same, wherein the modularized ECMO external membrane lung oxygenation trolley comprises a base part, a column part arranged on the base part and a detachable laminate part arranged on the column part, one side of the column part is provided with the oxygenator fixing device, the other side of the column part is provided with a second oxygenator fixing device, the oxygenator fixing device comprises a first bracket and a positioning seat, the first bracket comprises a positioning part and a movable arm assembly which are connected with each other, and the movable arm assembly can stretch and shrink; the positioning seat comprises a seat body and a positioning disc arranged on the seat body, wherein the seat body is detachably connected with the movable arm assembly, and a plurality of positioning bodies are arranged on the positioning disc in the circumferential direction. The invention integrates all components and accessories of the ECMO, forms a transfer system of the ECMO, can quickly transfer, has simple structure design and low production cost, is suitable for mass production, and can effectively improve the working efficiency of doctors.

Description

Oxygenator fixing device and modularized ECMO (electro-chemical mechanical mo) extracorporeal membrane pulmonary oxygenation trolley using same

Technical Field

The invention relates to the technical field of medical equipment, in particular to an oxygenator fixing device and a modularized ECMO external membrane pulmonary oxygenation trolley using the same.

Background

External membrane oxygenation (extracorporeal membrane oxygenation, ECMO), also known as an in vitro vitamin system, was first applied clinically in 1972, and has become an effective treatment for patients with severe cardiopulmonary disorders. ECMO is generally composed of the following parts: an intravascular cannula, a connecting pipe, a power pump, an oxygenator, an oxygen supply pipe, a monitoring and control system and the like.

Because ECMO has the characteristics of high risk and high operation requirement in the use process, medical staff is required to be connected with various devices quickly and accurately and ensure the normal use of the various devices in clinical use. ECMO devices are expensive and less configured in hospitals, so rapid transport is required to meet clinical usage requirements of different operating rooms on ECMO devices. In addition, as the environment is worsened, the requirements for ECMO use are increasing increasingly for patients with severe cardiopulmonary diseases, so that improving the efficiency of ECMO equipment in different operating rooms is becoming a serious issue for clinical use in hospitals. The existing ECMO transfer trolley equipment is not good in integration level, various ECMO accessories cannot be integrated together, various accessories cannot be adjusted according to actual use conditions, and in addition, the equipment and the accessories are not fast connected, so that inconvenience is brought to medical staff; moreover, the human-computer engineering can not be well met, and the left and right positions and the height position can not be adjusted according to clinical use requirements.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the modularized ECMO external membrane pulmonary oxygenation trolley which integrates all components and accessories of ECMO, forms a transfer system of ECMO, can rapidly transfer, and has flexible position adjustment and convenient operation of all parts.

The invention also provides an oxygenator fixing device which can be used for rapidly and stably locking the adult oxygenator accessory and can be used for randomly adjusting the installation position.

The invention also provides a fixing device of the pediatric oxygenator, which can adapt to blood reservoirs with different sizes and specifications.

The invention is realized by the following technical scheme:

an oxygenator fixation device comprising a first bracket and a positioning seat, the first bracket comprising a positioning portion and a movable arm assembly that are connected to each other, the positioning portion being used for positioning the oxygenator fixation device on a support body, the movable arm assembly being extendable and retractable; the positioning seat is used for being matched with and installing a first oxygenator, the positioning seat comprises a seat body and a positioning disc arranged on the seat body, the seat body is detachably connected with the movable arm assembly, a plurality of positioning bodies are arranged on the circumference of the positioning disc, and the positioning bodies are used for being clamped with the oxygenator.

Optionally, one end of the base is provided with a clamping part matched with the movable arm assembly, and the clamping part is detachably connected with the movable arm assembly; the top of the other end of the seat body is provided with the positioning disc; the locating disc comprises a first disc body and a second disc body which are arranged in a stacked mode, a plurality of clamping holes extending along the radial direction are formed in the circumferential direction of the first disc body, and a plurality of locating bodies are fixed in the clamping holes.

Optionally, a positioning rod for positioning the oxygenator is also arranged in the base; the positioning rod comprises a rod body and a pin body arranged at one end of the rod body, the rod body is telescopically arranged in the first mounting hole, and the pin body can pass through the second mounting hole; the surface of the rod body is provided with a flange, the inner wall of the first mounting hole is provided with a boss, an elastic body is arranged between the flange and the boss, and the elastic body normally biases the rod body so that the pin body can penetrate out of the second mounting hole.

Optionally, the location portion includes the body, locates a pair of arm lock and the regulation pole of body one end is formed with the block mouth between a pair of the arm lock, be equipped with the screw hole on the arm lock, it can match to adjust the pole and locate threaded hole, it is arranged in to adjust the pole the butt is located the supporter in the block mouth.

Optionally, the connecting arm includes a first movable arm and a second movable arm that are movably connected to each other, the first movable arm is movably connected to the positioning portion, and the second movable arm is movably connected to the base; the first movable arm and the second movable arm are foldable.

The modularized ECMO external membrane pneumoconiosis trolley comprises a base part, a column part arranged on the base part, a laminate part detachably arranged on the column part, and an oxygenator fixing device arranged on one side of the column part.

Optionally, the base part comprises a supporting table and a travelling wheel positioned below the supporting table; the stand column part comprises a plurality of stand columns fixed on the supporting table, and the oxygenator fixing device is detachably arranged on the stand columns

Optionally, a plurality of movable clamping bodies are arranged on each upright, and the laminate part comprises a first bearing table and a second bearing table which are layered on the clamping bodies.

Optionally, the blood storage device further comprises a second oxygenator fixing device arranged on the other side of the upright post part, wherein the second oxygenator fixing device comprises a second extensible and contractible bracket, a supporting rod, a blood storage device fixing device arranged on the supporting rod and a second oxygenator positioning structure, one end of the second bracket is detachably connected with the upright post part, and the supporting rod is detachably connected with the other end of the second bracket.

Optionally, the blood storage device fixing device comprises a clamping ring assembly, a clamping ring control assembly and a sliding seat, wherein the clamping ring assembly comprises a base, a pair of clamping ring arms rotatably arranged on the base and a sliding rod movably connected with the clamping ring arms, the sliding rod is slidably arranged in the sliding seat, and the clamping ring control assembly is arranged in the sliding seat and used for unlocking and limiting the sliding rod; the sliding seat is movably connected to the supporting rod.

Optionally, the sliding seat comprises a first part for installing the clamping ring assembly and the clamping ring control assembly, a locking structure, a second part for installing the locking structure and a socket hole penetrating through the first part and the second part, and the first part is provided with a first limiting hole extending horizontally and transversely, a second limiting hole extending longitudinally and a third limiting hole; the clamping ring control assembly comprises a push switch, a push block and an elastic body which are sequentially arranged from top to bottom, wherein the push block and the elastic body are movably arranged in a second limiting hole, the push switch is movably arranged in a third limiting hole, the push switch is abutted against one side surface of the push block, the elastic body is connected with the other opposite side surface of the push block, and the elastic body biases the push switch to be always exposed out of the third limiting hole; the supporting rod is slidably arranged in the socket hole; the sliding seat is movably connected with the supporting rod through the locking structure.

Optionally, the locking structure includes locating a pair of latch segment of second part one end, locate the locking hole of latch segment and locate the locking lever in the locking hole, the socket runs through a pair of the latch segment, the locking lever with the locking hole is provided with assorted screw thread.

Compared with the prior art, the invention has the advantages that:

1. according to the invention, the adult oxygenator accessory is fixed on the first oxygenator fixing device in a mode that the chassis bayonet and the positioning rod are simultaneously limited, so that the adult oxygenator can be locked quickly and stably, the locking and the dismounting of the adult oxygenator are more convenient and quick, the scale on the shell is not blocked, and the guide tube inserted outside the oxygenator is not blocked.

2. In the invention, the child oxygenator accessory adopts two adjustable clamping ring arms to replace a fixed metal ring, and can be suitable for blood reservoirs with different sizes and specifications.

3. According to the invention, the first oxygenator fixing device and the second oxygenator fixing device are detachably connected with the upright post through the extensible and contractible support, so that the left and right and height positions can be adjusted at will according to actual working conditions, and the operation is convenient.

4. The ECMO external membrane pulmonary oxygenation trolley integrates various components and accessories of the ECMO, forms a transfer system of the ECMO, can rapidly transfer the ECMO, has a simple structure design, is low in production cost, is suitable for mass production, and can effectively improve the working efficiency of doctors.

Drawings

FIG. 1 is a schematic illustration of the structure of a modular ECMO external membrane lung oxygenation cart according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of a base portion according to an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of a column portion according to an embodiment of the present invention;

FIG. 4 is an exploded view of a first oxygenator fixation device according to an embodiment of the present invention;

fig. 5 is a schematic view showing the structure of a first oxygenator fixing apparatus according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a positioning seat according to an embodiment of the invention.

FIG. 7 is a schematic view of a positioning plate and oxygenator combined structure according to an embodiment of the present invention.

FIG. 8 is a schematic view of a positioning rod mated with an oxygenator according to an embodiment of the present invention.

FIG. 9 is a schematic view of a second oxygenator fixation device according to an embodiment of the present invention.

Fig. 10 is an exploded view of a second oxygenator fixation device according to an embodiment of the present invention.

FIG. 11 is a schematic view of a clamp ring assembly according to an embodiment of the invention.

Fig. 12 is a schematic view of the structure of a clamping ring arm according to an embodiment of the present invention.

Fig. 13 is a schematic structural view of a sliding seat according to an embodiment of the invention.

FIG. 14 is a cross-sectional view of a slide mount mated with a clamp ring assembly in accordance with an embodiment of the present invention.

Fig. 15 is a cross-sectional view of a slide mount according to an embodiment of the present invention.

Fig. 16 is a schematic structural view of a push switch according to an embodiment of the present invention.

FIG. 17 is a schematic view of an unlocked slide bar according to an embodiment of the present invention.

Detailed Description

The technical scheme of the invention is further described in non-limiting detail below with reference to the preferred embodiments and the accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. refer to the azimuth or positional relationship based on the azimuth or positional relationship shown in the drawings. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

As shown in fig. 1, a modularized ECMO external membrane pulmonary oxygenation trolley according to an embodiment of the present invention includes a base portion 1 for walking and transferring, a column portion 2 provided on the base portion 1, and a laminate portion provided on the column portion 2, wherein the column portion 2 is provided with a first oxygenator fixing device 3 and a second oxygenator fixing device 4, the first oxygenator fixing device 3 is used for supporting and fixing an adult oxygenator 40, the second oxygenator fixing device 4 is used for supporting and fixing a pediatric oxygenator 20, and the base portion 1 and the laminate portion are used for placing a power box 60, a control system 10, a monitoring system 30, and the like for external membrane oxygenation, so that the transfer device according to the embodiment of the present invention integrates various components and accessories for external membrane oxygenation, forms a transfer system for external membrane oxygenation, and can be quickly transferred. Specifically, details will be described below.

As shown in fig. 2, the base portion 1 includes a supporting table 101 and a plurality of travelling wheels 102 located below the supporting table 101, the supporting table 101 has a substantially rectangular frame structure, the travelling wheels 102 are 4 universal wheels fixed below the supporting table 101, and it is envisioned that a skilled person can set the shape of the supporting table 101 and the number and kind of travelling wheels according to needs.

As shown in fig. 3, the column part 2 includes a plurality of columns 201 fixed to the support table 101, and a connecting rod 203 is provided between two adjacent columns 201. In an alternative embodiment, the columns 201 are provided with 4, four being rectangular in shape and fixed to the support table 101 of the base portion 1. Each upright 201 is further provided with a plurality of movable clamping bodies 202, and the clamping bodies 202 can slide up and down along the upright 201 and are locked and fixed. In an alternative embodiment, the clamping body 202 has a substantially square structure, one end of the clamping body is provided with a pair of clamping arms for clamping the upright 201, the clamping arms are provided with threaded third locking rods and holes for adjusting clamping force, the clamping arms can be loosened or locked by rotating the third locking rods, and the clamping body 202 on the upright 201 can be used for supporting the laminate part. Further, a hanging rod 204 is provided above the adjacent two pillars 201.

As shown in fig. 1, the laminate part includes a first carrying table 5 and a second carrying table 6 layered on the clamping body 202, the first carrying table 5 is used for placing the monitoring system 30, the second carrying table 6 is used for placing the control system 10, and the number of carrying tables and the components used for placing can be set by a technician as required, which is not limited herein. The first bearing table 5 can be of a flat plate structure, the second bearing table 6 can be of a box body structure, and the shapes of the first bearing table and the second bearing table can be adjusted according to requirements. The post 201 also has an ultrafiltration filter 50 attached thereto. The first bearing table 5 and the second bearing table 6 are directly placed on the clamping body 202 of the upright post 201, so that the heights of the first bearing table 5 and the second bearing table 6 can be freely adjusted by adjusting the heights of the clamping body 202, and the method is convenient, quick, time-saving and labor-saving.

As shown in fig. 4, the first oxygenator fixing device 3 includes a first bracket 3a and a positioning seat 3b, the first bracket 3a includes a positioning portion 302 and a movable arm assembly connected to each other, the positioning portion 302 is used to position the first oxygenator fixing device 3 on a support body, that is, the upright 201, the movable arm assembly is extendable and retractable, and the positioning seat 3b is used to cooperatively mount the first oxygenator fixing device 3. The positioning part 302 is detachably connected with the upright 201, so that the disassembly, assembly and adjustment of the installation height are convenient, and the position of the first oxygenator fixing device 3 on the upright 2 can be adjusted at will.

As shown in fig. 4 and 5, the positioning portion includes a body 302, a pair of clamp arms 3021 disposed at one end of the body 302, and an adjusting rod 301, wherein a clamping opening is formed between the pair of clamp arms 3021, the clamping opening is in clearance fit with the upright 201, a threaded hole 3022 is formed in one of the clamp arms 3021, and the adjusting rod 301 is disposed in the threaded hole 3022 in a matching manner. The adjusting lever 301 comprises a handle portion, a screw and an abutting joint which are connected with each other, the handle portion and the abutting joint are respectively located at two ends of the screw, the screw is matched with the threaded hole 3022, and the abutting joint can be controlled to be abutted to be fixed or separated from the upright 201 by rotating the handle portion, so that detachable installation is achieved.

As shown in fig. 4, the movable arm assembly includes a first connecting arm 303 and a second connecting arm 305, wherein, one end of the first connecting arm 303 matched with the body 302 is provided with a connecting hole, a first locking rod 304 is arranged in the connecting hole, the inner wall of the connecting hole and the outer wall of the first locking rod 304 are provided with matched threads, and locking or rotatable connection between the first connecting arm 303 and the body 302 can be realized by rotating the first locking rod 304. Similarly, the first connecting arm 303 and the second connecting arm 305 are provided with a connecting hole and a first locking lever 304 at the mating ends, and the other end of the second connecting arm 305 is connected to the positioning seat 3b. Furthermore, the first connecting arm 303 and the second connecting arm 305 may also be located at different heights so that both can be folded rotatably. The movable connection of the first connecting arm 303 and the second connecting arm 305 makes it possible to adjust the position of the positioning seat 3b in the left-right direction at will, and the operation is convenient.

As shown in fig. 4 and 6, the positioning seat 3b includes a seat body 311 and a positioning disk 307, one end of the seat body 311 is provided with a clamping portion matched with the connecting arm, and the top of the other end of the seat body 311 is provided with the positioning disk 307. The base 311 and the second connecting arm 305 are connected through the middle rod 313, the clamping part comprises a pair of claw arms 311, a first locking hole 3111 arranged on the claw arms 311 and a locking rod 310 arranged in the first locking hole 3111, after the claw arms 311 are clamped with the middle rod 313, the claw arms are locked or unlocked through the locking rod 310, and therefore detachable connection between the base 311 and the second connecting arm 305 is achieved. In an alternative embodiment, the first locking hole 3111 is a threaded hole and the locking bar 310 is a threaded bar, the locking bar 310 being either locked or unlocked by rotation; or the first locking hole 3111 is a general hole, and one end of the locking lever 310 is provided with threads and bolts.

As shown in fig. 6 and 7, the positioning plate 307 includes a first plate 3073 and a second plate 3074 that are stacked, a plurality of radially extending clamping holes are provided in the circumferential direction of the first plate 3073, and a plurality of positioning bodies 3071 are fixed in the clamping holes. In an alternative embodiment, the diameter of the first disc 3073 is smaller than that of the

second disc

3074, and 4 clamping holes are uniformly formed in the circumferential direction of the first disc 3073, and each clamping hole is provided with a positioning body 3071, however, a technician may also set other numbers of positioning bodies 3071. The positioning body 3071 adopts a round pin. The positioning plate 307 is fixedly connected with the base 311 through a pin and a set screw 306. During installation, as shown in fig. 7, the bottom of the adult oxygenator 40 is provided with a circular clamping groove, the clamping groove is sleeved on the positioning disk 307, a plurality of arc-shaped grooves 4001 are formed in the inner wall of the clamping groove, positioning grooves 4002 are formed in one end of each arc-shaped groove 4001, the number and positions of the arc-shaped grooves 4001 are matched with those of the positioning bodies 3071, the adult oxygenator 40 is rotated by an angle to enable the positioning bodies 3071 to enter the positioning grooves 4002, and therefore the adult oxygenator 40 can be clamped on the positioning disk 307, and the mounting is convenient, quick, time-saving and labor-saving.

To prevent the adult-sized oxygenator 40 from rotating on the positioning disk 307, a positioning rod 309 for positioning the adult-sized oxygenator 40 is also provided. As shown in fig. 6, the other end of the base 311 is provided with a first mounting hole 3113, the second disk 3074 is provided with a second mounting hole 3072, the first mounting hole 3113 and the second mounting hole 3072 are correspondingly communicated, and the positioning rod 309 comprises a rod 3093 and a handle and a pin 3091 respectively positioned at two ends of the rod 3093. The rod body 3093 is located in the first mounting hole 3113, the pin body 3091 passes through the second mounting hole 3072, the outer surface of the rod body 3093 is provided with a flange 3092, the inner wall of the first mounting hole 3113 is provided with a boss, an elastic piece 308 is arranged between the flange 3092 and the boss, and the elastic piece 308 normally biases the rod body 3093 so that the pin body 3091 extends out of the second mounting hole 3072. The elastic member 308 is optionally sleeved on the rod 3093 by a spring. As shown in fig. 8, an axially extending pin hole 4003 is further provided in the bottom clamping groove of the adult oxygenator 40, after the clamping groove of the adult oxygenator 40 is sleeved on the positioning disk 307, the pin body 3091 of the positioning rod 309 abuts against the inner wall of the clamping groove to force the positioning rod 309 to be pressed downwards, and when the adult oxygenator 40 rotates by an angle, the positioning rod 309 resets to enable the pin body 3091 to enter the pin hole 4003 to achieve positioning. Through the combined use of the positioning disk 307 and the positioning rod 309, the locking and the dismounting of the adult oxygenator 40 are more convenient and quick, the scale on the shell is not blocked, and the guide tube inserted outside the oxygenator is not blocked.

As shown in fig. 9, the pediatric oxygenator 20 is connected with a blood reservoir 70, the second oxygenator fixing device 4 includes a second bracket 4a, a support rod 409, a blood reservoir fixing device and a second oxygenator positioning structure 410, one end of the second bracket 4a is connected to the upright 201, the support rod 409 is connected to the other end of the second bracket 4a, the blood reservoir fixing device is movably disposed on the support rod 409, and the second oxygenator positioning structure 410 is disposed at the lower part of the support rod 409.

As shown in fig. 10, 11, 12, and 14, the structure of the second bracket 4a is substantially the same as that of the first bracket 3 a. The blood reservoir fixing device comprises a clamping ring assembly, a clamping ring control assembly, a sliding seat 403 and a locking structure arranged on the sliding seat 403, wherein the clamping ring assembly and the clamping ring control assembly are arranged in the sliding seat 403, and the sliding seat 403 is slidably arranged on the supporting rod 409. Specifically, the clamping ring assembly includes a base, a pair of clamping ring arms 401 movably disposed on the base, and a sliding rod 408 movably connected to the clamping ring arms 401, where the clamping ring arms 401 have an arc structure, one end of the clamping ring arms 401 is a free end, the other end of the clamping ring arms is provided with a kidney-shaped hole 4012, and a rotating shaft hole 4011 is disposed near the kidney-shaped hole 4012. One end of the slide bar 408 is movably disposed in the kidney-shaped hole 4012 and the other end thereof is engaged with the clamp ring control assembly. Specifically, one end of the sliding rod 408 may be movably disposed in the kidney-shaped hole 4012 by a pin 4081. The sliding rod 408 is circular, square or triangular in cross section, and is slidably disposed in the sliding seat 403. The base includes upper cover plate 409, lower cover plate 402 and is located the supporting shoe between the upper cover plate and the lower cover plate, is provided with pivot 4013 between upper cover plate 409 and the lower cover plate 402, and clamp ring arm 401 overlaps through pivot hole 4011 and locates on pivot 4013 for clamp ring arm 401 and base rotatable coupling. The upper cover plate 409 and the lower cover plate 402 are fixed to the top of the slide base 403 by rivets or screws.

As shown in fig. 13 and 15, the sliding seat 403 includes a first portion 4031 for mounting the clamping ring assembly and the clamping ring control assembly, a second portion 4032 for providing a locking structure, and a socket 4036 extending through the first portion 4031 and the second portion 4032, and the sliding seat 403 has a first gap 4037 and a second gap 4038 extending horizontally and laterally at two ends, the first gap 4037 and the second gap 4038 being located between the first portion 4031 and the second portion 4032, and the first gap 4037 is for receiving the lower cover plate 402. The first portion 4031 is provided with a first limiting hole 4033 extending horizontally and transversely, a second limiting hole 4034 extending longitudinally and a third limiting hole 4035, and the third limiting hole 4035 is positioned in the second limiting hole 4034 and communicated with the second limiting hole 4034. The first limiting holes 4033 are two and are used for inserting the sliding rod 408, and the length of the first limiting holes 4033 is smaller than that of the sliding seat 403. The second limiting hole 4034 is a slotted hole, and the third limiting hole 4035 is a circular hole positioned in the middle of the second limiting hole 4034. The first limiting hole 4033, the second limiting hole 4034 and the third limiting hole 4035 are mutually communicated.

As shown in fig. 10 and 16, the clamp ring control assembly includes a push switch 407, a push block 406 and an elastic body 405 sequentially disposed from top to bottom, where the push switch 407 is movably disposed in the third limiting hole 4035, and the push block 406 and the elastic body 405 are both movably disposed in the second limiting hole 4034. The lower end of the push switch 407 abuts against the upper side surface of the push block 406, the elastic body 405 is connected with the lower side surface of the push block 406, and the elastic body 405 biases the push switch 407 to be always exposed out of the second limiting hole 4034. The push switch 407 has a columnar structure, one end of the push switch, which is matched with the push block 406, is provided with a clamping groove 4071, and the push block 406 is positioned in the clamping groove 4071. A pin is arranged in the clamping groove 4071 and is connected with the pushing block 406. To ensure sufficient elasticity, the elastic body 405 is provided with two parts, which are located at both ends of the push block 406. The elastic body 405 may be a spring. A notch 4082 is provided near the other end of the slide bar 408, the shape of the notch 4082 matches the shape of the push block 406, and the notch 4082 is used for clamping the push block 406.

As shown in fig. 10 and 13, the second oxygenator positioning structure 410 is a positioning pin fixed at the bottom end of the supporting rod 409, the supporting rod 409 includes a straight rod section and a bent rod section that are integrally connected, the sliding seat 403 is slidably disposed in the straight rod section through the socket 4036, and the second oxygenator positioning structure 410 is fixed on the bent rod section. The locking structure comprises a pair of locking blocks 4040 arranged at one end of the second portion 4032, a second locking hole 4039 arranged in the locking blocks 4040 and a second locking rod 404 arranged in the second locking hole 4039, wherein the socket hole 4036 penetrates through the pair of locking blocks 4040, and the second locking rod 404 and the second locking hole 4039 are provided with matched threads. Specifically, the second locking hole 4039 of one of the locking blocks 4040 is a threaded hole, and the second locking lever 404 is engaged with the threaded second locking hole 4039 after being inserted from the unthreaded second locking hole 4039. Pulling the second locking bar 404 in the counterclockwise direction, the locking block 4040 is not pressed by the second locking bar 404, at this time, the sliding seat 403 is released, the sliding seat 403 can slide along the supporting bar 409, pushing the second locking bar 404 in the clockwise direction, the locking blocks 4040 are pressed by the second locking bar 404 to approach each other, at this time, the locking blocks 4040 clamp the supporting bar 409, and the sliding seat 403 cannot move relative to the vertical bar supporting bar 409.

In a normal state, as shown in fig. 17, the clamping ring arm 401 is in a contracted state, the notch 4082 of the sliding rod 408 is not engaged with the push block 406, the sliding rod 408 is in a free motion state, when the blood vessel 70 is placed in the clamping ring arm 401, because the shape of the blood vessel 70 is in an inverted cone shape, the clamping ring arm 401 can be slowly opened along with the placement of the blood vessel 70 so as to drive the sliding rod 408 to move forward, when the blood vessel 70 is placed in a certain depth, the notch 4082 of the sliding rod 408 is gradually overlapped with the push block 406, the push block 406 is upwards moved by the elastic force of the lower spring 405 along the guide angle of the sliding rod 408 until the push block is engaged with the notch 4082, and at the moment, the clamping ring arm 401 cannot move so as to lock the blood vessel 70; if the blood reservoir 70 is to be removed, the push switch 407 is depressed, causing the push block 406 to disengage downwardly out of the recess 4082 and the slide bar 408 to be unlocked, and the clamp ring arms 401 to be released to remove the blood reservoir 70. The clamping ring assembly can be expanded and contracted to change the clamping size, so that the aim of locking blood reservoirs with different specifications and sizes can be fulfilled.

The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. An oxygenator fixation device, comprising:

a first bracket including a positioning portion and a movable arm assembly connected to each other, the positioning portion being for positioning the oxygenator fixing device on a support body, the movable arm assembly being extendable and retractable;

the positioning seat is used for being matched with and installed with the first oxygenator and comprises a seat body and a positioning disc arranged on the seat body, the seat body is detachably connected with the movable arm assembly, a plurality of positioning bodies are arranged on the circumference of the positioning disc and are used for being clamped with the first oxygenator;

one end of the base body is provided with a clamping part matched with the movable arm assembly, and the clamping part is detachably connected with the movable arm assembly; the top of the other end of the seat body is provided with the positioning disc; the positioning disc comprises a first disc body and a second disc body which are arranged in a stacked manner, a plurality of clamping holes extending along the radial direction are formed in the circumferential direction of the first disc body, a plurality of positioning bodies are fixed in the clamping holes, a plurality of arc-shaped grooves are formed in the inner wall of the first oxygenator, and the positioning bodies enter the positioning grooves by rotating the first oxygenator by an angle;

a positioning rod for positioning the oxygenator is also arranged in the base body; the positioning rod comprises a rod body and a pin body arranged at one end of the rod body, the rod body is telescopically arranged in the first mounting hole, and the pin body can pass through the second mounting hole; the surface of the rod body is provided with a flange, the inner wall of the first mounting hole is provided with a boss, an elastic body is arranged between the flange and the boss, the elastic body is normally biased to the rod body so that the pin body can penetrate out of the second mounting hole, an axially extending pin hole is further formed in a clamping groove at the bottom of the first oxygenator, and the pin hole is matched with the pin body.

2. The oxygenator fixing device according to claim 1, wherein the positioning portion comprises a body, a pair of clamping arms arranged at one end of the body, and an adjusting rod, a clamping opening is formed between the clamping arms, threaded holes are formed in the clamping arms, the adjusting rod is arranged in the threaded holes in a matching mode, and the adjusting rod is used for abutting against the supporting body located in the clamping opening.

3. The oxygenator fixation device of claim 1 wherein the movable arm assembly comprises a first movable arm and a second movable arm movably coupled to each other, the first movable arm movably coupled to the positioning portion and the second movable arm movably coupled to the housing; the first movable arm and the second movable arm are foldable.

4. A modular ECMO epicardial pulmonary oxygenation trolley comprising a base part and a pillar part provided on the base part, characterized by further comprising a detachable laminate part provided on the pillar part, one side of the pillar part being provided with the oxygenator fixing device according to any one of claims 1 to 3.

5. The modular ECMO external membrane lung oxygenation cart of claim 4, wherein the base section includes a support stand and a road wheel located below the support stand; the stand column part comprises a plurality of stand columns fixed on the supporting table, and the oxygenator fixing device is detachably arranged on the stand columns.

6. The modular ECMO external membrane lung oxygenation trolley of claim 5, wherein each of the uprights is provided with a plurality of movable clamp bodies, the laminate section including a first load-carrying platform and a second load-carrying platform layered on the clamp bodies.

7. The modular ECMO external membrane lung oxygenation trolley of claim 4, further comprising a second oxygenator fixture disposed on the other side of the column section, the second oxygenator fixture comprising an extendable and retractable second bracket, a support rod, a blood reservoir fixture disposed on the support rod, and a second oxygenator positioning structure, one end of the second bracket being removably attached to the column section, and the support rod being removably attached to the other end of the second bracket.

8. The modular ECMO external membrane lung oxygenation trolley of claim 7, wherein the blood reservoir fixture includes a clamp ring assembly including a base, a pair of clamp ring arms rotatably disposed on the base, and a slide bar movably connected to the clamp ring arms, the slide bar slidably disposed within the slide seat, a clamp ring control assembly disposed within the slide seat for unlocking and limiting the slide bar; the sliding seat is movably connected to the supporting rod.

9. The modular ECMO external membrane pneumo frame of claim 8, wherein the sliding seat comprises a first portion for mounting the clamp ring assembly and clamp ring control assembly, a locking structure, a second portion for mounting the locking structure, and a socket hole penetrating the first portion and the second portion, the first portion having a first limit hole extending horizontally and a second limit hole extending longitudinally and a third limit hole, the sliding bar slidably disposed within the first limit hole; the clamping ring control assembly comprises a push switch, a push block and an elastic body which are sequentially arranged from top to bottom, wherein the push block and the elastic body are movably arranged in a second limiting hole, the push switch is movably arranged in a third limiting hole, the push switch is abutted against one side surface of the push block, the elastic body is connected with the other opposite side surface of the push block, and the elastic body biases the push switch to be always exposed out of the third limiting hole; the supporting rod is slidably arranged in the socket hole; the sliding seat is movably connected with the supporting rod through the locking structure.