CN215083043U - Extracorporeal circulation artificial membrane lung - Google Patents
Extracorporeal circulation artificial membrane lung Download PDFInfo
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- CN215083043U CN215083043U CN202120382999.6U CN202120382999U CN215083043U CN 215083043 U CN215083043 U CN 215083043U CN 202120382999 U CN202120382999 U CN 202120382999U CN 215083043 U CN215083043 U CN 215083043U
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Abstract
The utility model relates to an oxygenator technical field discloses an artificial membrane lung of extracorporal circulatory system, is provided with the partition structure on the lateral wall of inner tube, and partition liquid chamber in the inner tube of partition structure, the cross-sectional area of dividing the liquid chamber diminishes to the top by bottom gradually, is provided with a plurality of water conservancy diversion holes along the axial on the lateral wall of inner tube, divides the liquid chamber to communicate through a plurality of water conservancy diversion holes and oxygenation chamber, is provided with the drain pipe on the lateral wall of urceolus bottom, drain pipe and oxygenation chamber intercommunication. The utility model provides an artificial membrane lung for extracorporeal circulation, the blood in the liquid separating cavity can get into the oxygenation cavity by the water conservancy diversion hole of any position of inner tube axial, improves the oxygenation efficiency of blood. The cross-sectional area of the liquid separation cavity is gradually reduced from the bottom to the top, the aperture of the flow guide hole is gradually increased from the bottom to the top, and the blood flow flowing into the oxygenation cavity from each axial position of the liquid separation cavity is ensured to be consistent. The liquid outlet pipe and the liquid inlet pipe are arranged at the bottom end of the artificial membrane lung, so that the pressure drop of blood flowing into and out of the artificial membrane lung is reduced.
Description
Technical Field
The utility model relates to an oxygenator technical field especially relates to an artificial membrane lung of extracorporal circulatory system.
Background
The membrane oxygenator is used to introduce venous blood out of body, exchange oxygen and carbon dioxide to become arterial blood, and return it to the arterial system of patient for maintaining the supply of oxygenated blood to viscera and tissue. For increasing the oxygenation efficiency of the artificial membrane lung of extracorporal circulation, the blood inlet and the outlet axial position of the artificial membrane lung of extracorporal circulation common on the market are respectively arranged at the lower side (upside) of the inner cylinder and the upper side (downside) of the outer cylinder of the artificial membrane lung of extracorporal circulation, the arrangement mode of the blood outlet and the inlet can effectively increase the length of the flow path when the blood flows into the artificial membrane lung, the oxygenation efficiency of the artificial membrane lung is improved, but the arrangement mode inevitably increases the pressure drop when the blood flows through the artificial membrane lung, the blood flow passing through the upper end and the lower end of the artificial membrane lung is difficult to ensure the same, and the oxygenation efficiency of the blood is influenced.
How to reduce the pressure drop flowing into and out of the artificial membrane lung during blood circulation while considering the efficiency of blood oxygenation exchange is an urgent problem to be solved.
SUMMERY OF THE UTILITY MODEL
Based on the above problem, an object of the utility model is to provide an artificial membrane lung of extracorporeal circulation can guarantee the oxygenation efficiency of the inside blood of artificial membrane lung to reduce the pressure drop when blood flows in and flows out the artificial membrane lung.
In order to achieve the purpose, the utility model adopts the following technical proposal:
an extracorporeal circulation artificial membrane lung comprising:
the upper cover is provided with an air inlet pipe;
the oxygenation assembly comprises an inner cylinder and an outer cylinder which are coaxial and arranged at intervals, the upper cover is sleeved at the top end of the outer cylinder, an oxygenation cavity is defined by the outer cylinder and the inner cylinder, oxygenation membrane filaments are arranged in the oxygenation cavity, a partition plate structure is arranged on the side wall of the inner cylinder, the partition plate structure partitions a liquid separation cavity in the inner cylinder, the cross-sectional area of the liquid separation cavity is gradually reduced from bottom to top, a plurality of flow guide holes are axially formed in the side wall of the inner cylinder, the liquid separation cavity is communicated with the oxygenation cavity through the plurality of flow guide holes, a liquid inlet pipe is arranged at the bottom end of the inner cylinder and communicated with the liquid separation cavity, a liquid outlet pipe is arranged on the side wall of the bottom end of the outer cylinder and communicated with the oxygenation cavity;
the lower cover is sleeved at the bottom end of the outer barrel, an air outlet pipe is arranged on the lower cover, and the air outlet pipe is communicated with the air inlet pipe through the oxygenation membrane wire.
As the utility model discloses an optimal selection scheme of extrinsic cycle artificial membrana lung, can dismantle on the inner tube and be provided with the liquid distribution board, the baffle structure is including first trapezoidal plate, hang plate and the second trapezoidal plate that splices in proper order, the top of hang plate is provided with the roof, and the bottom is provided with the bottom plate, first trapezoidal plate the hang plate second trapezoidal plate the roof the bottom plate with the liquid distribution board amalgamation forms the liquid distribution chamber, the area of roof is less than the area of bottom plate.
As the utility model discloses an optimal selection scheme of extrinsic cycle artificial membrane lung, it is a plurality of the water conservancy diversion hole along axial evenly spaced distribution in divide on the liquid board, the aperture in water conservancy diversion hole is by bottom to top grow gradually.
As the optimized proposal of the extracorporeal circulation artificial membrane lung of the utility model, every the diversion hole is a straight hole with equal diameter, every the axis of the diversion hole is vertical to the axis of the inner cylinder.
As the utility model discloses an optimal selection scheme of extracorporeal circulation artificial membrane lung, the water conservancy diversion hole is in be provided with the multiseriate along circumference interval on the liquid distribution plate.
As the utility model discloses an optimal selection scheme of extracorporeal circulation artificial membrane lung, cover down and be provided with and dodge the hole, the feed liquor pipe runs through in proper order dodge the hole with the bottom plate, and stretch into divide the liquid intracavity.
As the preferred proposal of the extracorporeal circulation artificial membrane lung of the utility model, the liquid outlet pipe is positioned on one side of the flow guide hole which is far away from the inclined plate.
As the utility model discloses an optimal selection scheme of extrinsic cycle artificial membrane lung, the upper cover with all be provided with the support protrusion in the lower cover, the support protrusion of upper cover with the top of inner tube is pegged graft, the support protrusion of lower cover with the bottom of inner tube is pegged graft.
As the utility model discloses an optimal selection scheme of extrinsic cycle artificial membrane lung, the upper cover with all be provided with annular holding tank in the lower cover, annular holding tank coaxial set up in outside the support protrusion, the top of urceolus with the top of oxygenation membrane silk all is located in the annular holding tank of upper cover, the urceolus bottom with the bottom of oxygenation membrane silk all is located in the annular holding tank of lower cover.
As the utility model discloses an optimal selection scheme of extracorporeal circulation artificial membrane lung, the extracorporeal circulation artificial membrane lung still include with the heat transfer unit of feed liquor pipe intercommunication, heat transfer unit is used for maintaining the temperature when blood extracorporeal circulation.
The utility model has the advantages that:
the utility model provides an artificial membrane lung of extrinsic cycle, blood let in the branch liquid intracavity in the inner tube via the feed liquor pipe, the blood that divides the liquid intracavity again via a plurality of water conservancy diversion holes that distribute along the axial in getting into the oxygenation membrane silk in the oxygenation chamber, carry out the oxygenation by the oxygen that the intake pipe of upper cover let in and the blood in the oxygenation membrane silk, the carbon dioxide that the oxygenation produced is again via the outlet duct discharge of lower cover. Because the lateral wall of inner tube all is provided with the water conservancy diversion hole along the axial, consequently, divide the blood in the liquid chamber to get into the oxygenation intracavity by inner tube axial optional position to make blood flow to urceolus bottom drain pipe via different flow paths, and then guarantee that whole oxygenation membrane silk can both be full of blood, improve the oxygenation efficiency of blood. Meanwhile, the cross-sectional area of the liquid separating cavity is gradually reduced from the bottom to the top, namely, the pressure in the liquid separating cavity is gradually increased from the bottom to the top, so that the blood flow flowing into the oxygenation cavity from each axial position of the liquid separating cavity can be ensured to be consistent, and the uniformity of the blood flow in different paths is further ensured. In addition, the liquid inlet pipe is arranged at the bottom end of the inner barrel, and the liquid outlet pipe is arranged at the bottom end of the outer barrel, so that the pressure drop of blood flowing into and out of the artificial membrane lung can be reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a front view of an extracorporeal circulation artificial membrane lung provided in an embodiment of the present invention;
FIG. 2 is a longitudinal cross-sectional view of FIG. 1;
FIG. 3 is a transverse cross-sectional view of FIG. 1;
FIG. 4 is a front view of an inner cylinder of an extracorporeal circulation artificial membrane lung according to an embodiment of the present invention;
fig. 5 is a longitudinal sectional view of fig. 4.
In the figure:
1-covering the upper cover; 2-inner cylinder; 3-outer cylinder; 4-oxygenation membrane filaments; 5-a separator structure; 6-liquid separation cavity; 7-lower cover; 8-a heat exchange unit;
11-an air inlet pipe; 21-diversion holes; 22-a liquid inlet pipe; 23-a liquid separating plate; 31-a liquid outlet pipe;
51-a first trapezoidal plate; 52-inclined plate; 53-a second trapezoidal plate; 54-a top plate; 55-a bottom plate;
71-an air outlet pipe; 72-support protrusions.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 5, the present embodiment provides an extracorporeal circulation artificial membrane lung including an upper cap 1, an oxygenation assembly and a lower cap 7.
Wherein, the upper cover 1 is provided with an air inlet pipe 11; the oxygenation assembly comprises an inner barrel 2 and an outer barrel 3 which are coaxial and arranged at intervals, an upper cover 1 is sleeved at the top end of the outer barrel 3, the outer barrel 3 and the inner barrel 2 define an oxygenation cavity, oxygenation membrane filaments 4 are arranged in the oxygenation cavity, a partition plate structure 5 is arranged on the side wall of the inner barrel 2, the partition plate structure 5 partitions a liquid separation cavity 6 in the inner barrel 2, the cross-sectional area of the liquid separation cavity 6 is gradually reduced from bottom to top, a plurality of flow guide holes 21 are axially arranged on the side wall of the inner barrel 2, the liquid separation cavity 6 is communicated with the oxygenation cavity through the plurality of flow guide holes 21, a liquid inlet pipe 22 is arranged at the bottom end of the inner barrel 2, the liquid inlet pipe 22 is communicated with the liquid separation cavity 6, a liquid outlet pipe 31 is arranged on the side wall of the bottom end of the outer barrel 3, and the liquid outlet pipe 31 is communicated with the oxygenation cavity; the lower cover 7 is sleeved at the bottom end of the outer cylinder 3, an air outlet pipe 71 is arranged on the lower cover 7, and the air outlet pipe 71 is communicated with the air inlet pipe 11 through the oxygenation membrane wire 4.
In this embodiment, the upper cover 1 and the lower cover 7 have hollow chambers therein, the air inlet pipe 11 is communicated with the chamber of the upper cover 1, and the air outlet pipe 71 is communicated with the chamber of the lower cover 7. The top and the bottom of oxygenation membrane silk 4 all are provided with and seal the glue, have seted up the air vent on sealing the glue, and oxygen can get into the cavity of upper cover 1 via intake pipe 11, gets into oxygenation membrane silk 4 via the air vent on the sealing glue on oxygenation membrane silk 4 top again. Carbon dioxide gas generated by oxygenation can be discharged into the cavity of the lower cover 7 through the vent holes on the sealing glue at the bottom end of the oxygenation membrane wire 4 and then discharged out of the artificial membrane lung through the air outlet pipe 71.
In the extracorporeal circulation artificial membrane lung provided by the embodiment, blood is introduced into the liquid separating chamber 6 in the inner cylinder 2 through the liquid inlet pipe 22, the blood in the liquid separating chamber 6 enters the oxygenation membrane filaments 4 in the oxygenation chamber through the plurality of axially distributed flow guide holes 21, oxygen introduced through the air inlet pipe 11 of the upper cover 1 performs oxygenation with the blood in the oxygenation membrane filaments 4, and carbon dioxide generated by oxygenation is discharged through the air outlet pipe 71 of the lower cover 7. Because the inner tube 2 lateral wall in minute liquid chamber 6 all is provided with water conservancy diversion hole 21 along the axial on, consequently, divide the blood in the liquid chamber 6 and can get into the oxygenation intracavity by inner tube 2 axial optional position to make blood flow to urceolus 3 bottom drain pipe 31 via different flow path, and then guarantee that whole oxygenation membrane silk 4 can both be full of blood, improve the oxygenation efficiency of blood. Meanwhile, the cross-sectional area of the liquid separating cavity 6 is gradually reduced from the bottom to the top, namely the pressure in the liquid separating cavity 6 is gradually increased from the bottom to the top, so that the blood flow flowing into the oxygenation cavity from each position along the axial direction of the liquid separating cavity 6 can be ensured to be consistent, and the uniformity of the blood flow of different paths is further ensured. In addition, the liquid inlet pipe 22 is arranged at the bottom end of the inner cylinder 2, and the liquid outlet pipe 31 is arranged at the bottom end of the outer cylinder 3, so that the pressure drop of blood flowing into and out of the artificial membrane lung can be reduced.
In this embodiment, it is preferable that the air inlet pipe 11 is located on a side wall of the upper cover 1, the air outlet pipe 71 is located on a side wall of the lower cover 7, and the air inlet pipe 11 and the air outlet pipe 71 are located on the same axis.
As shown in fig. 1 and 2, the extracorporeal circulation artificial membrane lung optionally further comprises a heat exchange unit communicated with the liquid inlet pipe 22, and the heat exchange unit is used for maintaining the temperature of the blood during extracorporeal circulation. The blood after heat exchange by the heat exchange unit is introduced into the liquid separation cavity 6 through the liquid inlet pipe 22, so that the blood can maintain a certain temperature in the extracorporeal circulation process. Preferably, the heat exchange unit comprises a heat exchanger, wherein warm water with the temperature of 37 ℃ is stored in the heat exchanger, so that the normal body temperature of blood can be maintained.
As shown in fig. 2 and 3, optionally, the liquid distribution plate 23 is detachably disposed on the inner cylinder 2, the partition structure 5 includes a first trapezoidal plate 51, an inclined plate 52 and a second trapezoidal plate 53 which are sequentially spliced, a top plate 54 is disposed on the top of the inclined plate 52, a bottom plate 55 is disposed on the bottom of the inclined plate, the first trapezoidal plate 51, the inclined plate 52, the second trapezoidal plate 53, the top plate 54, the bottom plate 55 and the liquid distribution plate 23 are spliced to form the liquid distribution chamber 6, and the area of the top plate 54 is smaller than that of the bottom plate 55. In this embodiment, a notch is formed in the side wall of the inner cylinder 2, the liquid separation plate 23 is a curved plate, and the liquid separation plate 23 can be just spliced with the notch of the inner cylinder 2. First trapezoidal plate 51 and second trapezoidal plate 53 are right angle trapezoidal plate, and the right angle side of right angle trapezoidal plate leans on with the lateral wall of inner tube 2, and the minute liquid chamber 6 that forms through two right angle trapezoidal plate amalgamations diminishes along axial cross sectional area gradually. The arrangement mode enables the pressure in the liquid dividing cavity 6 to be gradually increased from the bottom to the top, and when the blood in the liquid dividing cavity 6 flows out through the flow guide holes 21, the blood flow in the flow guide holes 21 at all positions along the axial direction can be ensured to be consistent, and the uniformity of the flow field of the blood is improved.
For convenience of processing, in the present embodiment, preferably, the first trapezoidal plate 51, the inclined plate 52, the second trapezoidal plate 53, the top plate 54 and the bottom plate 55 are integrally formed with the inner cylinder 2, and the liquid separation plate 23 is clamped with the side wall of the inner cylinder 2, so as to facilitate assembly and disassembly. In other embodiments, the liquid separation plate 23 and the inner cylinder 2 can be integrally formed, and the partition structure 5 is disposed on the sidewall of the inner cylinder 2. The present embodiment does not specifically limit the processing manner of the liquid separation chamber, as long as the variation of the cross-sectional area of the liquid separation chamber 6 can be achieved.
As shown in fig. 4 and 5, optionally, a plurality of diversion holes 21 are distributed on the liquid separation plate 23 at equal intervals along the axial direction, and the aperture of the diversion holes 21 gradually increases from the bottom to the top. In other embodiments, the distribution of the plurality of diversion holes 21 may also be non-equally spaced. The pore diameter distribution mode of the flow guide holes 21 is designed into gradually changed holes gradually enlarged from the bottom to the top, so that the resistance borne by the blood on the upper side of the liquid separation cavity 6 is smaller, the blood easily flows into the oxygenation membrane wire 4 in the oxygenation cavity, the blood flow flowing out of the flow guide holes 21 at all positions in the liquid separation cavity 6 along the axial direction is ensured to be approximately the same, the uniformity of the blood flowing in the oxygenation membrane wire 4 is further improved, and the blood oxygenation efficiency is improved.
Optionally, the diversion holes 21 are arranged in a plurality of rows on the liquid separation plate 23 at intervals along the circumferential direction. In this embodiment, the diversion holes 21 are preferably arranged in three rows to ensure the total flow of blood flowing out of the aliquoting chamber 6. In other embodiments, the aperture of the diversion holes 21 and the number and distribution of the diversion holes 21 can be changed according to actual needs to adjust the balance relationship between the oxygenation efficiency and the pressure drop of the extracorporeal circulation artificial membrane lung.
Further, as shown in fig. 2 and 5, each of the guiding holes 21 is a straight hole with a constant diameter, and an axis of each of the guiding holes 21 is perpendicular to an axis of the inner cylinder 2. In this embodiment, the liquid separating chamber 6 is directly communicated with the oxygenation chamber through the flow guide holes 21, and the oxygenation membrane filaments 4 are attached to the outer side wall of the inner cylinder 2, so that blood in the liquid separating chamber 6 can directly enter the oxygenation chamber through the flow guide holes 21, and the flow guide holes 21 are designed into straight holes with equal diameters, which is beneficial to guiding the blood in the liquid separating chamber 6 to the oxygenation chamber. In other embodiments, the diversion hole 21 may also be designed as a gradual hole, i.e. a non-uniform hole, according to actual requirements, so as to adjust the flow rate of blood in the liquid separation chamber 6.
In another embodiment, the shape of the separating chamber 6 may not be trapezoidal. For example, the liquid separation chamber 6 divided by the partition plate structure 5 is conical, and the cross-sectional area of the liquid separation chamber 6 becomes gradually smaller from the bottom end to the top end. The shape of the liquid-separation chamber 6 is not particularly limited as long as variation in the cross-sectional area of the liquid-separation chamber 6 can be achieved. Of course, the shape of the liquid dividing chamber 6 can be designed according to the actual oxygenator structure and the arrangement mode of the oxygenation membrane filaments 4, and the size, the number and the arrangement mode of the diversion holes 21 are changed by combining the shape of the liquid dividing chamber 6, so that the relationship between oxygenation efficiency and pressure drop is optimized. The pressure drop of blood flowing into and out of the artificial membrane lung is reduced while the oxygenation efficiency is ensured.
As shown in fig. 2, optionally, an avoiding hole is formed in the lower cover 7, and the liquid inlet pipe 22 sequentially penetrates through the avoiding hole and the bottom plate 55 and extends into the liquid separating chamber 6. One end of the liquid inlet pipe 22 extending out of the avoidance hole is connected with a blood outflow pipe of the heat exchange unit, and the blood after heat exchange treatment enters the liquid separation chamber 6 and then enters the oxygenation membrane wire 4 through the flow guide hole 21 for oxygenation. In this embodiment, the liquid inlet pipe 22 is disposed at the bottom end of the inner cylinder 2, so as to reduce the pressure drop when blood flows into the artificial membrane lung and ensure the uniformity of blood flow.
As shown in fig. 2, outlet pipe 31 is optionally located on a side of inclined plate 52 remote from baffle hole 21. That is, the outlet pipe 31 faces the diversion holes 21, the flow direction of the blood in the outlet pipe 31 is opposite to the flow direction of the blood in the diversion holes 21, and the outlet pipe 31 is located at the lower side of the outer cylinder 3, so that the blood at the lower end of the liquid separation chamber 6 only needs to enter the oxygenation membrane filaments 4 through the diversion holes 21 at the lower part, then flows to the outlet pipe 31 along the circumferential direction of the oxygenation membrane filaments 4, and flows out of the artificial membrane lung, and this blood flow path is short, so the stay time of the blood in the oxygenation membrane filaments 4 is relatively short, and the pressure is reduced. Blood at the upper end of the liquid separation cavity 6 needs to enter the oxygenation membrane filaments 4 through the upper flow guide holes 21, the blood flows along the circumferential direction of the oxygenation membrane filaments 4 and the axial direction of the oxygenation membrane filaments 4, and then flows out of the artificial membrane lung through the liquid outlet pipe 31, the blood flow path is long, the blood can perform sufficient oxygenation in the oxygenation membrane filaments 4, and the oxygenation efficiency is improved. Through the arrangement mode, the oxygenation efficiency of the blood is ensured while the blood flowing uniformity is improved. In addition, the outlet tube 31 is provided below the outer tube 3, and reduces the pressure drop when the blood flows out.
With continued reference to fig. 2, optionally, a supporting protrusion 72 is disposed in each of the upper cover 1 and the lower cover 7, the supporting protrusion 72 of the upper cover 1 is inserted into the top end of the inner cylinder 2, and the supporting protrusion 72 of the lower cover 7 is inserted into the bottom end of the inner cylinder 2. Further, all be provided with the annular holding tank in upper cover 1 and the lower cover 7, the annular holding tank is coaxial to be set up outside supporting protrusion 72, and the top of urceolus 3 and the top of oxygenation membrane silk 4 all are located the annular holding tank of upper cover 1, and the bottom of urceolus 3 and the bottom of oxygenation membrane silk 4 all are located the annular holding tank of lower cover 7. In this embodiment, the top and bottom ends of the outer cylinder 3 and the inner cylinder 2 are respectively sealed by the upper cover 1 and the lower cover 7 to ensure the sealing performance of the oxygenation chamber.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious modifications, rearrangements and substitutions without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. An extracorporeal circulation artificial membrane lung, comprising:
the air inlet pipe (11) is arranged on the upper cover (1);
the oxygenation assembly comprises an inner barrel (2) and an outer barrel (3) which are coaxial and arranged at intervals, wherein the upper cover (1) is sleeved at the top end of the outer barrel (3), the outer barrel (3) and the inner barrel (2) define an oxygenation cavity, oxygenation membrane filaments (4) are arranged in the oxygenation cavity, a partition plate structure (5) is arranged on the side wall of the inner barrel (2), the partition plate structure (5) partitions a liquid separation cavity (6) in the inner barrel (2), the cross-sectional area of the liquid separation cavity (6) is gradually reduced from bottom to top, a plurality of flow guide holes (21) are axially arranged on the side wall of the inner barrel (2), the liquid separation cavity (6) is communicated with the oxygenation cavity through the flow guide holes (21), a liquid inlet pipe (22) is arranged at the bottom end of the inner barrel (2), the liquid inlet pipe (22) is communicated with the liquid separation cavity (6), and a liquid outlet pipe (31) is arranged on the side wall at the bottom end of the outer barrel (3), the liquid outlet pipe (31) is communicated with the oxygenation cavity;
the lower cover (7) is sleeved at the bottom end of the outer cylinder (3), an air outlet pipe (71) is arranged on the lower cover (7), and the air outlet pipe (71) is communicated with the air inlet pipe (11) through the oxygenation membrane wire (4).
2. The extracorporeal circulation artificial membrane lung of claim 1, wherein the liquid distribution plate (23) is detachably disposed on the inner cylinder (2), the partition structure (5) comprises a first trapezoidal plate (51), an inclined plate (52) and a second trapezoidal plate (53) which are sequentially spliced, a top plate (54) is disposed at the top of the inclined plate (52), a bottom plate (55) is disposed at the bottom of the inclined plate (52), the first trapezoidal plate (51), the inclined plate (52), the second trapezoidal plate (53), the top plate (54), the bottom plate (55) and the liquid distribution plate (23) are spliced to form the liquid distribution chamber (6), and the area of the top plate (54) is smaller than that of the bottom plate (55).
3. The extracorporeal circulation artificial membrane lung of claim 2, wherein a plurality of the diversion holes (21) are distributed on the liquid separation plate (23) at equal intervals along the axial direction, and the aperture of the diversion holes (21) is gradually increased from the bottom to the top.
4. The extracorporeal circulation artificial membrane lung of claim 3, wherein each of the diversion holes (21) is a straight hole of a constant diameter, and an axis of each of the diversion holes (21) is perpendicular to an axis of the inner cylinder (2).
5. The extracorporeal circulation artificial membrane lung of claim 3, wherein the flow guide holes (21) are provided in a plurality of rows circumferentially spaced on the liquid separation plate (23).
6. The extracorporeal circulation artificial membrane lung of claim 2, wherein an avoiding hole is formed in the lower cover (7), and the liquid inlet pipe (22) sequentially penetrates through the avoiding hole and the bottom plate (55) and extends into the liquid distribution chamber (6).
7. The extracorporeal circulation artificial membrane lung of claim 2, wherein the outlet duct (31) is located on a side of the inclined plate (52) remote from the flow guide hole (21).
8. The extracorporeal circulation artificial membrane lung of claim 1, wherein a support protrusion (72) is provided in each of the upper cover (1) and the lower cover (7), the support protrusion (72) of the upper cover (1) is inserted into the top end of the inner cylinder (2), and the support protrusion (72) of the lower cover (7) is inserted into the bottom end of the inner cylinder (2).
9. The extracorporeal circulation artificial membrane lung of claim 8, wherein an annular receiving groove is provided in each of the upper cover (1) and the lower cover (7), the annular receiving groove is coaxially provided outside the supporting protrusion (72), the top end of the outer cylinder (3) and the top end of the oxygenated membrane filaments (4) are both located in the annular receiving groove of the upper cover (1), and the bottom end of the outer cylinder (3) and the bottom end of the oxygenated membrane filaments (4) are both located in the annular receiving groove of the lower cover (7).
10. The extracorporeal circulation artificial membrane lung of any one of claims 1 to 9, further comprising a heat exchange unit in communication with the fluid inlet tube (22), the heat exchange unit being configured to maintain a temperature of the blood during extracorporeal circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120382999.6U CN215083043U (en) | 2021-02-20 | 2021-02-20 | Extracorporeal circulation artificial membrane lung |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120382999.6U CN215083043U (en) | 2021-02-20 | 2021-02-20 | Extracorporeal circulation artificial membrane lung |
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| CN215083043U true CN215083043U (en) | 2021-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116271306A (en) * | 2023-05-24 | 2023-06-23 | 北京清瀚医疗科技有限公司 | Polygonal artificial membrane lung for in-vitro carbon dioxide removal and preparation method thereof |
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2021
- 2021-02-20 CN CN202120382999.6U patent/CN215083043U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116271306A (en) * | 2023-05-24 | 2023-06-23 | 北京清瀚医疗科技有限公司 | Polygonal artificial membrane lung for in-vitro carbon dioxide removal and preparation method thereof |
| CN116271306B (en) * | 2023-05-24 | 2024-03-12 | 北京清瀚医疗科技有限公司 | Polygonal artificial membrane lung for in-vitro carbon dioxide removal and preparation method thereof |
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