CN212817411U - Elliptical flat oxygenator - Google Patents
Elliptical flat oxygenator Download PDFInfo
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- CN212817411U CN212817411U CN202020620330.1U CN202020620330U CN212817411U CN 212817411 U CN212817411 U CN 212817411U CN 202020620330 U CN202020620330 U CN 202020620330U CN 212817411 U CN212817411 U CN 212817411U
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Abstract
The utility model discloses an oval flat oxygenator, wherein a blood shunting cavity with oval cross section enclosed by a blood isolation plate is arranged at the center in a shell, an oxygenation channel with oval cross section is formed between the shell and a water film isolation plate, and a heat exchange channel is formed between the water film isolation plate and the blood isolation plate; the lower half part of the shell is provided with an annular blood collecting area; the blood collecting area is provided with a blood outlet and a medicament injection opening; the upper half part of the shell is provided with an annular gas collecting area which is provided with an exhaust port; the bottom of the shell is provided with a blood inlet, the bottom of the blood shunting cavity is provided with a blood shunting channel, and the blood inlet is communicated with the blood shunting channel; the upper half part of the water film isolation plate is provided with a first blood circulation channel, and the lower half part of the blood isolation plate is provided with a second blood circulation channel; the gas inlet and the gas outlet are respectively communicated with the oxygenation channel; the temperature-changing liquid inlet and the temperature-changing liquid outlet are respectively communicated with the heat exchange channel. The utility model discloses increased the biggest blood area of contact, improved oxygenation efficiency, reduced the oxygenation resistance.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to an oval flat oxygenator.
Background
ECMO systems typically include a blood pump to provide an input flow, a membrane oxygenator to supply oxygen, heparin coated and pre-filled connecting tubing, a variable temperature water tank to maintain blood temperature, and various sensing devices such as blood oxygen saturation, venous line negative pressure sensing, and the like. The ECMO system on the market is large in size and complex in structural operation, is mainly used for maintaining life for a long time and is not beneficial to being used in emergency rescue. Meanwhile, the size is large, the operation is complex, and another problem is that the cost is too high, the rapid popularization and application cannot be realized, the method can be only used in a small number of large medical centers, and operators can use the method in clinical application only by needing a great deal of experience.
The hemodialysis and filtration system leads blood out of the body in a radial artery drainage mode and the like, and certain components in the blood are filtered out or added by a specific method to complete the treatment scheme of a patient.
Hemodialysis or filtration systems have a relatively small amount of blood to drain, are roller pump systems prone to blood damage, and cannot be used to relieve the symptoms of pulmonary dyspnea without the oxygenator to accomplish extracorporeal blood oxygenation. If the oxygenator is forcibly connected, the roller pump is more prone to blood damage under the same blood flow, and because the drainage quantity is insufficient, the blood flow speed is low, thrombus in the oxygenator can grow, and the life risk of a patient is increased.
Low resistance high oxygenation is therefore a key objective of oxygenator design.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an oval flat oxygenator improves blood area of contact, reduces the oxygenation resistance.
In order to realize the above purpose, the utility model adopts the following technical scheme:
an elliptical flat oxygenator comprising a housing, the cross section of the housing being elliptical; a blood shunting cavity with an oval cross section and surrounded by blood isolation plates is arranged in the center in the shell, a water film isolation plate is arranged between the side wall of the shell and the blood isolation plates, an oxygenation channel with an oval cross section is formed between the shell and the water film isolation plate, and a heat exchange channel is formed between the water film isolation plate and the blood isolation plate;
the lower half part of the shell is provided with an annular blood collecting area; the blood collection area is provided with a blood outlet, a medicament injection port, a Ruhr pressure sensor interface and a temperature sensor interface;
the upper half part of the shell is provided with an annular gas collection area; the gas collection area is provided with a first exhaust port and a second exhaust port;
the bottom of the shell is provided with a blood inlet, the vertical section of the bottom of the blood shunting cavity is V-shaped, the bottom of the blood shunting cavity is provided with a blood shunting channel, and the blood inlet is communicated with the blood shunting channel;
the upper half part of the water film isolation plate is provided with a first blood circulation channel which is used for communicating the oxygenation channel with the heat exchange channel;
the lower half part of the blood isolation plate is provided with a second blood circulation channel which is used for communicating the heat exchange channel with the blood shunt channel;
the bottom of the shell is provided with a gas inlet, the top of the shell is provided with a gas outlet, and the gas inlet and the gas outlet are respectively communicated with the oxygenation channel; the gas outlet is provided with a gas detection port;
the top of the shell is provided with a temperature-changing liquid inlet, the bottom of the shell is provided with a temperature-changing liquid outlet, and the temperature-changing liquid inlet and the temperature-changing liquid outlet are respectively communicated with the heat exchange channel.
The first blood circulation channel is a plurality of groups of symmetrical window channels, 4-12 window channels are arranged, and the window channels are provided with blocking cover openings for closing part of the window channels.
The second blood circulation channel is a plurality of groups of symmetrical window channels, 4-12 window channels are arranged, and the window channels are provided with blocking cover openings for closing part of the window channels.
The utility model discloses following technological effect has:
1. the elliptic oxygenation channel increases the maximum blood contact area and improves the oxygenation efficiency; namely, the thickness of the oxygenation channel can be reduced on the premise of keeping the oxygenation effect;
2. the blood shunting channel and the blood shunting plate are combined to shunt the blood at the inlet into a plurality of strands, so that the blood flowing efficiency is improved, the oxygenation temperature changing process is accelerated, and the oxygenation resistance is reduced.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a schematic diagram of the right-side structure of the present invention;
fig. 3 is a schematic top view of the present invention;
FIG. 4 is a schematic view of the A-A section structure of the present invention;
FIG. 5 is a schematic view of the cross-sectional structure of the utility model B-B;
FIG. 6 is a schematic view of the cross-sectional structure of the present invention;
FIG. 7 is a schematic structural view of the blood diversion cavity of the present invention;
fig. 8 is a schematic view of the oxygenation channel configuration of the present invention;
FIG. 9 is a schematic flow diagram of the gas of the present invention;
fig. 10 is a schematic view of the temperature swing fluid flow direction of the present invention;
fig. 11 is a schematic view of the blood flow direction of the present invention;
fig. 12 is a schematic view of the blood contacting surface of the oxygenation channel of the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and examples.
As shown in fig. 1 to 6, the cross section of the housing 101 of the oval flat oxygenator is oval; a blood shunting cavity 105 which is surrounded by the blood isolation plate 103 and has an oval cross section is arranged in the center of the shell 101, as shown in fig. 1, a water film isolation plate 102 is arranged between the side wall of the shell 101 and the blood isolation plate 103, an oxygenation channel 107 with an oval cross section is formed between the shell 101 and the water film isolation plate 102, and as shown in fig. 8, a heat exchange channel 108 is formed between the water film isolation plate 102 and the blood isolation plate 103;
the lower half part of the shell 101 is provided with an annular blood collection area 106; the blood collection area 106 is provided with a blood outlet 2, a medicament injection port 8, a luer pressure sensor interface 7 and a temperature sensor interface 12;
the upper half part of the shell 101 is provided with an annular gas collection area 109; the gas collection area 109 is provided with a first exhaust port 10 and a second exhaust port 11;
the bottom of the shell 101 is provided with a blood inlet 1, the vertical section of the bottom of the blood shunting cavity 105 is V-shaped, the bottom of the blood shunting cavity 105 is provided with a blood shunting channel 104, and the blood inlet 1 is communicated with the blood shunting channel 104;
the upper half part of the water film isolation plate 102 is provided with a first blood circulation channel 110 which is used for communicating the oxygenation channel 107 with the heat exchange channel 108;
the lower half part of the blood isolation plate 103 is provided with a second blood circulation channel 111 for communicating the heat exchange channel 108 with the blood shunt channel 104;
the bottom of the shell 101 is provided with a gas inlet 3, the top is provided with a gas outlet 4, and the gas inlet 3 and the gas outlet 4 are respectively communicated with an oxygenation channel 107; the gas outlet 4 is provided with a gas detection port 9;
the top of the shell 101 is provided with a temperature-changing liquid inlet 5, the bottom is provided with a temperature-changing liquid outlet 6, and the temperature-changing liquid inlet 5 and the temperature-changing liquid outlet 6 are respectively communicated with the heat exchange channel 108.
The first blood circulation channel 110 is a plurality of groups of symmetrical window channels, 4-12 window channels are arranged, and blocking cover openings are arranged in the window channels and used for closing part of the window channels.
The second blood circulation channel 111 is a plurality of groups of symmetrical window channels, 4-12 window channels are arranged, and blocking cover openings are arranged in the window channels and used for closing part of the window channels.
A water membrane separation plate 102 separating the oxygenation channel 107 and the heat exchange channel 108.
The blood separation plate 103 separates blood from the blood shunting cavity 105.
The blood collection area 106, the blood collection area before blood flow out, provides pressure regulation capability.
An oxygenation channel 107, the area where blood is oxygenated. The air-oxygen mixture flows in the oxygenation channel 107 from bottom to top, and the blood flows from inside to outside and from top to bottom outside the pipeline, so that oxygen exchange is realized.
And the gas collection area 109 realizes the functions of exhausting and regulating pressure.
The first blood circulation channel 110 is a blood flow channel through which blood enters the heat exchange channel 108 from the oxygenation channel 107. And a second blood flowing channel 111, wherein blood flows from the blood shunting channel 104 into the blood flowing channel of the heat exchanging channel 108. Multiple sets of symmetrical channels, 4-12 window channels. A blocking flap may be provided to close off part of the passageway.
As shown in fig. 9, the gas enters from the gas inlet 3, flows into the oxygenation channel 107, passes through the annular channel, is sufficiently oxygenated with blood, and is then discharged from the upper gas outlet 4.
As shown in fig. 10, the temperature-changing liquid enters from the temperature-changing liquid inlet 5, flows into the heat exchange channel 108, passes through the oval channel, completes heat exchange with blood, and then flows out from the temperature-changing liquid outlet 6 below.
As shown in fig. 11, blood enters from the upper blood inlet 1, enters along the central blood channel of the oxygenator, passes through the blood diversion channel 104, enters the heat exchange channel 108 at the second blood circulation channel 111, and flows from bottom to top in the heat exchange channel 108. The blood flows downwards through the first blood flow channel 110 in the upper half part of the heat exchange channel 108 into the oxygenation channel 107 to complete oxygenation, and finally flows towards the blood collection area 106 and flows out through the blood outlet 4.
As shown in fig. 12, the elliptical oxygenation channel 107 of the present invention increases the maximum blood contact area and improves oxygenation efficiency; i.e. the thickness of the oxygenation channel 107 can be reduced while maintaining the oxygenation effect.
All edges are rounded or curved in design. The connection method is generally bonding and ultrasonic welding.
Claims (3)
1. An elliptical flat oxygenator, comprising a housing (101), characterized in that the cross section of the housing (101) is elliptical; a blood shunting cavity (105) which is surrounded by a blood isolation plate (103) and has an oval cross section is arranged at the center in the shell (101), a water film isolation plate (102) is arranged between the side wall of the shell (101) and the blood isolation plate (103), an oxygenation channel (107) with an oval cross section is formed between the shell (101) and the water film isolation plate (102), and a heat exchange channel (108) is formed between the water film isolation plate (102) and the blood isolation plate (103);
the lower half part of the shell (101) is provided with an annular blood collection area (106); the blood collection area (106) is provided with a blood outlet (2), a medicament injection port (8), a luer pressure sensor interface (7) and a temperature sensor interface (12);
the upper half part of the shell (101) is provided with an annular gas collection area (109); the gas collection area (109) is provided with a first exhaust port (10) and a second exhaust port (11);
the bottom of the shell (101) is provided with a blood inlet (1), the vertical section of the bottom of the blood shunting cavity (105) is V-shaped, the bottom of the blood shunting cavity (105) is provided with a blood shunting channel (104), and the blood inlet (1) is communicated with the blood shunting channel (104);
the upper half part of the water film isolation plate (102) is provided with a first blood circulation channel (110) which is used for communicating the oxygenation channel (107) with the heat exchange channel (108);
a second blood circulation channel (111) is arranged on the lower half part of the blood isolation plate (103) and is used for communicating the heat exchange channel (108) with the blood shunting channel (104);
the bottom of the shell (101) is provided with a gas inlet (3), the top of the shell is provided with a gas outlet (4), and the gas inlet (3) and the gas outlet (4) are respectively communicated with an oxygenation channel (107); a gas detection port (9) is arranged on the gas outlet (4);
the top of the shell (101) is provided with a temperature-changing liquid inlet (5), the bottom of the shell is provided with a temperature-changing liquid outlet (6), and the temperature-changing liquid inlet (5) and the temperature-changing liquid outlet (6) are respectively communicated with the heat exchange channel (108).
2. The elliptical flat oxygenator of claim 1 wherein the first blood circulation passageway (110) is a plurality of sets of symmetrical window passageways with 4-12 window passageways with a blocking cover for closing a portion of the window passageways.
3. The elliptical flat oxygenator of claim 1 or 2, wherein the second blood circulation channel (111) is a plurality of sets of symmetrical window channels, and 4-12 window channels are provided, and the window channels are provided with blocking cover openings for closing part of the window channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020620330.1U CN212817411U (en) | 2020-04-23 | 2020-04-23 | Elliptical flat oxygenator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020620330.1U CN212817411U (en) | 2020-04-23 | 2020-04-23 | Elliptical flat oxygenator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212817411U true CN212817411U (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020620330.1U Active CN212817411U (en) | 2020-04-23 | 2020-04-23 | Elliptical flat oxygenator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212817411U (en) |
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2020
- 2020-04-23 CN CN202020620330.1U patent/CN212817411U/en active Active
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