CN112774441A - Filtering temperature changing device - Google Patents
Filtering temperature changing device Download PDFInfo
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- CN112774441A CN112774441A CN202011611174.3A CN202011611174A CN112774441A CN 112774441 A CN112774441 A CN 112774441A CN 202011611174 A CN202011611174 A CN 202011611174A CN 112774441 A CN112774441 A CN 112774441A
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- 238000001914 filtration Methods 0.000 title claims abstract description 142
- 239000008280 blood Substances 0.000 claims abstract description 80
- 210000004369 blood Anatomy 0.000 claims abstract description 80
- 239000012528 membrane Substances 0.000 claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000000306 component Substances 0.000 claims abstract description 24
- 230000000740 bleeding effect Effects 0.000 claims abstract description 14
- 239000008358 core component Substances 0.000 claims abstract description 14
- 230000008859 change Effects 0.000 claims description 35
- 238000005192 partition Methods 0.000 claims description 16
- 239000011148 porous material Substances 0.000 claims description 8
- 239000000565 sealant Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 21
- 238000005374 membrane filtration Methods 0.000 abstract 1
- 239000012510 hollow fiber Substances 0.000 description 11
- 208000032843 Hemorrhage Diseases 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000009529 body temperature measurement Methods 0.000 description 4
- 230000017531 blood circulation Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 208000007536 Thrombosis Diseases 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 206010028024 Mouth haemorrhage Diseases 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007675 cardiac surgery Methods 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/34—Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/18—Heating or cooling the filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/04—Liquids
- A61M2202/0413—Blood
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Cardiology (AREA)
- Water Supply & Treatment (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a filtering temperature-changing device which comprises a filtering component, an inner core component, a temperature-changing component and a shell component, wherein the filtering component comprises a filtering support piece and a filtering membrane, the filtering membrane is wound on the filtering support piece in a staggered mode and surrounds to form an inner space, the filtering membrane is of a corrugated structure, the inner core component and the temperature-changing component are sequentially sleeved outside the filtering component, and the shell component comprises an outer shell, a first cover body and a second cover body; the outer shell is sleeved outside the temperature-changing assembly, and the first cover body and the second cover body are respectively arranged at two opposite ends of the outer shell; the blood inlet of the outer shell is communicated with the outside of the filtering membrane through the outside of the temperature changing component and the inner core component; the bleeding port of the second cover body is communicated with the inner space of the filtering membrane; the water outlet of the first cover body and the water inlet of the second cover body are respectively communicated with the inside of the temperature changing assembly. This application is through the setting of fold structure filtration membrane for the inside filtration membrane filtration area increase of filtration temperature changing device, thereby increased filtration efficiency and effect.
Description
Technical Field
The invention relates to the technical field of temperature changing devices, in particular to a filtering temperature changing device.
Background
Blood temperature changers are currently widely used in cardiac surgery and other clinical application scenarios where extracorporeal circulation is required. In order to filter the micro-thrombus in the blood, a filtering membrane is often added in the blood temperature changer; in order to secure the filtering effect, it is generally necessary to secure a sufficient contact surface area between the filtering membrane and blood, and therefore, it is generally necessary to dispose the filtering membrane on the outer circumference of the temperature changer. However, in the prior art, in the process of contacting the filtering membrane with blood, the micro-plugs with larger molecules need to be blocked outside the filtering membrane, if the blood is not flushed sufficiently, the micro-plugs can block the filtering membrane, especially when the blood consistency of a patient is higher or the ratio of the macromolecules in the blood is higher due to abnormality, the blocking condition of the filtering membrane is particularly obvious, and when the filtering membrane is blocked to a certain degree, the filtering efficiency and the filtering effect are greatly reduced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a filtering temperature changing device.
The invention discloses a filtering temperature changing device, which comprises:
a filter assembly comprising a filter support and a filter membrane; the filtering membranes are wound on the filtering support in a staggered manner and surround to form an inner space, and the filtering membranes are in a folded structure;
the inner core component is sleeved outside the filtering component;
the temperature changing component is sleeved outside the inner core component; and
the shell assembly comprises an outer shell, a first cover body and a second cover body; the outer shell is sleeved outside the temperature-changing assembly, and the first cover body and the second cover body are respectively arranged at two opposite ends of the outer shell; the outer shell is provided with a blood inlet which is communicated with the outside of the filtering membrane through the outside of the temperature changing component and the inner core component; the second cover body is provided with a bleeding port and a water inlet, and the bleeding port is communicated with the inner space of the filtering membrane; the first cover body is provided with a water outlet, and the water inlet and the water outlet are respectively communicated with the inside of the temperature changing assembly.
According to an embodiment of the present invention, the filtering support includes a plurality of first support bars and a plurality of second support bars; the plurality of first supporting rods are sequentially arranged at intervals along the first circumferential direction, and the plurality of second supporting rods are sequentially arranged at intervals along the second circumferential direction; the diameter of the first circumference is smaller than that of the second circumference, and the center points of the first circumference and the second circumference are overlapped; the filtering membrane is sequentially wound on the first supporting rod and the second supporting rod.
According to an embodiment of the present invention, the filtering support further comprises two support rod mounting seats; two ends of the first supporting rod and two ends of the second supporting rod are respectively arranged on the two supporting rod mounting seats.
According to an embodiment of the present invention, the pore diameter of the filtration pore of the filtration membrane gradually increases in the direction from the blood inlet to the blood outlet.
According to one embodiment of the invention, the intervals between the filtering holes of the filtering membrane are gradually reduced along the direction from the blood inlet to the blood outlet, and the density of the filtering holes is changed from dense to sparse.
According to an embodiment of the present invention, the core assembly includes a core tube; the inner core pipe is provided with a plurality of first through holes; the inner core pipe is sleeved outside the filter component.
According to one embodiment of the invention, the temperature change component comprises a temperature change part and two rubber sealing parts, wherein the temperature change part is sleeved outside the inner core component; the two sealing glue pieces are respectively arranged at two opposite ends of the temperature change piece; the blood inlet is communicated with the outside of the temperature changing piece; the water inlet and the water outlet are respectively communicated with the inside of the temperature changing piece.
According to one embodiment of the present invention, the temperature change assembly further comprises a divider member; the partition plate piece is sleeved outside the temperature changing piece and is provided with a plurality of second through holes; the blood inlet is communicated with the outside of the temperature changing part through the partition plate part.
According to one embodiment of the present invention, a temperature change member is a hollow fiber membrane.
According to an embodiment of the present invention, the outer housing further has a pressure measuring port.
According to an embodiment of the present invention, the second cover further has a temperature measuring port; the temperature measuring port is communicated with the bleeding port.
According to an embodiment of the present invention, the second cover further has an exhaust port; the exhaust port communicates with the interior space of the filter membrane.
The beneficial effect of this application lies in: the filtering area of the filtering membrane in the filtering temperature changing device is increased through the arrangement of the filtering membrane with the folded structure, the effect of the conventional arrangement on the outer circumference can be achieved in the inner circumference of the filtering temperature changing device, the flowing channel of the blood gradually changes from a large circumference to a small circumference, and the flowing pressure of the blood in the filtering temperature changing device is also a gradually changing process; meanwhile, the filtering membrane with the fold structure can further be washed by the folding back of the macromolecular micro-plugs in the blood in the fold area, so that the filtering efficiency and effect are enhanced; by arranging the filtering holes with different sizes and the gaps among the holes, on one hand, the drainage and shunting effect on blood can be achieved, on the other hand, micro-plugs with different molecular sizes can be subjected to graded filtering, and the filtering efficiency and effect are greatly enhanced; in addition, the filtering temperature changing device is also integrated with the functions of pressure measurement, temperature measurement and bubble capture, and the filtering temperature changing effect of the filtering temperature changing device is further improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of a filtration temperature-changing device in this embodiment;
FIG. 2 is a cross-sectional view of the filter temperature change device of this embodiment;
FIG. 3 is a schematic structural diagram of a filter assembly according to the present embodiment;
FIG. 4 is a transverse cross-sectional view of the filter assembly of this embodiment;
FIG. 5 is a schematic view of the present embodiment after deployment of the filtering membrane;
FIG. 6 is a schematic structural diagram of an inner core assembly according to the present embodiment;
FIG. 7 is a schematic view of the structure of the septal element of this embodiment.
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
It should be noted that all the directional indications such as up, down, left, right, front and rear … … in the embodiment of the present invention are only used to explain the relative positional relationship, movement, etc. between the components in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.
In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
For further understanding of the contents, features and effects of the present invention, the following embodiments are enumerated in conjunction with the accompanying drawings, and the following detailed description is given:
referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a filtration temperature changing device in this embodiment, fig. 2 is a cross-sectional view of the filtration temperature changing device in this embodiment, fig. 3 is a schematic structural diagram of a filtration assembly in this embodiment, and fig. 4 is a transverse cross-sectional view of the filtration assembly in this embodiment. The filter temperature change device in this embodiment includes a filter assembly 1, a core assembly 2, a temperature change assembly 3, and a housing assembly 4. The filtering assembly 1 comprises a filtering support 11 and a filtering membrane 12, wherein the filtering membrane 12 is wound on the filtering support 11 in a staggered manner and surrounds to form an inner space, and the filtering membrane 12 is of a corrugated structure. The inner core component 2 is sleeved outside the filtering component 1. The temperature changing component 3 is sleeved outside the inner core component 2. The housing assembly 4 includes an outer housing 41, a first cover 42 and a second cover 43; the outer casing 41 is sleeved outside the temperature change assembly 3, and the first cover 42 and the second cover 43 are respectively disposed at two opposite ends of the outer casing 41; the outer shell 41 is provided with a blood inlet 411, and the blood inlet 411 is communicated with the outside of the filtering membrane 12 through the outside of the temperature changing component 3 and the inside core component 2; the second lid 43 has a blood outlet 431 and a water inlet 432, and the blood outlet 431 communicates with the internal space of the filter membrane 12; the first cover 42 has a water outlet 421, and the water inlet 432 and the water outlet 421 are respectively communicated with the inside of the temperature varying assembly 3.
Through the setting of fold structure filtration membrane 12 for the filtration membrane 12 filtration area increase inside the filtration temperature changing device, also can reach the effect of conventional setting at the outer circumference in the interior circumference of filtering the temperature changing device, and the filtration membrane 12 of fold structure, the macromolecule micro-plug in the blood can further be washed away at the folding back of fold region, has strengthened filtration efficiency and effect.
Referring back to fig. 3 and 4, further, the filtering support 11 includes a plurality of first support bars 111 and a plurality of second support bars 112. The plurality of first support bars 111 are sequentially spaced along a first circumferential direction (not shown), and the plurality of second support bars 112 are sequentially spaced along a second circumferential direction. The first circumference has a diameter smaller than that of the second circumference (not shown), and the first circumference overlaps with a center point of the second circumference. The filter membrane 12 is wound around the first support rod 111 and the second support rod 112 in this order. Preferably, the filter support 11 further comprises two support bar mounts 113. Both ends of the first supporting rod 111 and both ends of the second supporting rod 112 are respectively mounted on the two supporting rod mounting seats 113.
Specifically, the cross section of the mounting seat 113 is circular. The first support rod 111 and the second support rod 112 are both long rod-shaped, and the first support rod 111 and the second support rod 112 have the same length. Both ends of each first support rod 111 are vertically arranged on two installation bases 113, and the plurality of first support rods 111 are arranged along a first circumference direction, and the plurality of first support rods 111 are close to the inner ring of the installation bases 113, and the center point of the first circumference overlaps with the center point of the installation bases 113. Similarly, two ends of each second support rod 112 are vertically disposed on the two mounting seats 113, the plurality of second support rods 112 are arranged along the second circumferential direction, the plurality of second support rods 112 are close to the outer ring of the mounting seats 113, and the center point of the second circumferential is overlapped with the center point of the mounting seats 113. In this embodiment, the first supporting rods 111 and the second supporting rods 112 are disposed at intervals, a second supporting rod 112 is disposed between two adjacent first supporting rods 111, and a first supporting rod 111 is disposed between two adjacent second supporting rods 112. The height of the filter membrane 12 is the same as the length of the first support bar 111. The filter membrane 12 is sequentially wound around the first support rod 111 and the second support rod 112 to finally form a cylindrical shape having a pleated structure, so that an inner space is formed in the filter membrane 12 around the first support rod 111 and the second support rod 112. Thus, the first support rods 111 and the second support rods 112 arranged at intervals are used as supports, so that the filtering membrane 12 can be supported inside the filtering temperature changing device in a corrugated structure, the filtering area of the filtering membrane 12 is increased, and the filtering efficiency and the filtering effect are improved.
With continued reference to FIGS. 1-5, FIG. 5 is a schematic view of the present embodiment after deployment of the filtering membrane. Further, the pore diameter of the filter pores 121 of the filter membrane 12 gradually increases in the direction from the blood inlet 411 to the blood outlet 431. Preferably, the interval between the filtering holes 121 on the filtering membrane 12 is gradually reduced along the direction from the blood inlet 411 to the blood outlet 431, and the density of the filtering holes 121 is changed from dense to sparse.
Blood flows towards the direction of bleeding mouth 431 by advancing blood mouth 411, and the aperture and the setting in hole through filtration pore 121 on filtration membrane 12 are different, in order to play the drainage reposition of redundant personnel effect to blood on the one hand, on the other hand still can carry out stage filtration to the micro-plug of different molecular sizes, strengthens filtration efficiency and effect by a wide margin. Specifically, after entering from the blood inlet 411, the blood enters the inner core assembly 2 through the temperature changing assembly 3, and flows from one end of the inner core assembly 2 close to the blood inlet 411 to one end of the blood inlet 411 close to the blood outlet 431; normally, the shortest path of blood flow is from the filtering membrane 12 near the blood inlet 411 to the blood outlet 431 after crossing the internal space of the filtering membrane 12. When the aperture of the filtering hole 121 close to the blood inlet 411 is small and the pitch of the holes is large, the power required for traversing the filtering membrane 12 is larger, and similarly, the aperture of the filtering hole 121 close to the blood outlet 431 is large and the pitch of the holes is small, and the power required for traversing the filtering membrane 12 is smaller, so that the blood is easily guided to the outside of the filtering membrane 12 as much as possible and then traverses into the inner space of the filtering membrane 12, the utilization rate of the filtering membrane 12 close to one end of the blood outlet 431 is improved, and the filtering efficiency and the filtering effect are increased.
With continued reference to fig. 2 and 6, fig. 6 is a schematic structural view of the core assembly in this embodiment. Further, the core assembly 2 includes a core tube 21. The inner core tube 21 is formed with a plurality of first through holes 211. The inner core tube 21 is sleeved outside the filter assembly 1. Specifically, the inner core tube 21 is cylindrical, the plurality of first through holes 211 are uniformly distributed on the side wall of the inner core tube 21, the inner core tube 21 is sleeved outside the filtering membrane 12 and the two mounting seats 113, and two ends of the inner core tube 21 are respectively connected with the two mounting seats 113. The structure of the first through holes 211 uniformly distributed on the inner core tube 21 can facilitate the blood to uniformly disperse and enter the outside of the filtering membrane 12.
With continued reference to fig. 2 and 7, fig. 7 is a schematic structural view of the septal element of this embodiment. Furthermore, the temperature change component 3 includes a temperature change member 31 and two sealant members 32, and the temperature change member 31 is sleeved outside the core component 2. The two glue sealing pieces 32 are respectively arranged at two opposite ends of the temperature changing piece 31; the blood inlet 411 communicates with the outside of the temperature change member 31; the water inlet 432 and the water outlet 421 are respectively communicated with the inside of the temperature varying member 31. The hollow fiber membrane of the temperature changing member 31 in the present embodiment is specifically constituted by a plurality of hollow fiber tubes capable of exchanging heat, and the temperature of blood passing through the outside can be changed by passing temperature-changing water through the inside of the hollow fiber tubes. Of course, in other embodiments, a stainless steel thin tube can be used as the temperature changing member 31. The sealant 32 is used to fix and seal the ends of the plurality of hollow fiber tubes, and in a specific application, the sealant is fixed to the end of the temperature change member 31, and then cut and corrected.
Preferably, the temperature change assembly 3 further includes a divider member 33. The partition member 33 is sleeved outside the temperature changing member 31, and the partition member 33 is provided with a plurality of second through holes 331; the blood inlet 411 communicates with the outside of the temperature changing member 31 through the partition member 33. Specifically, the partition member 33 is cylindrical, the plurality of second through holes 331 are uniformly distributed on the sidewall of the partition member 33, the partition member 33 is sleeved outside the temperature changing member 31 and the two sealant members 32, and two ends of the partition member 33 are respectively connected with the two sealant members 32. The plurality of second through holes 331 uniformly distributed in the partition member 33 are configured to facilitate the blood to uniformly disperse and enter the outside of the temperature varying member 31.
Referring to fig. 1 and 2 again, the outer casing 41 is cylindrical and is sleeved outside the partition member 33, and a gap is formed between the outer casing 41 and the partition member 33. The blood inlet 411 is tubular, and is vertically disposed on the outer wall of the outer housing 41 and communicates with the inside of the outer housing 41, and the blood inlet 411 is located at one end of the outer housing 41 close to the first cover 42. The first cover 42 is in the shape of a cover, and has a boss 422 and an annular channel 423 formed therein. The first cover 42 covers one end of the outer casing 41, the boss 422 is connected to the mounting base 113, the annular channel 423 corresponds to the sealing member 32, and the interior of the hollow fiber tube of the temperature change member 31 is communicated with the annular channel 423. The water outlet 421 is tubular, is vertically disposed on the sidewall of the first cover 42, and is communicated with the annular channel 423 inside the first cover 42. The second cover 43 is in the form of a cover having a bleeding passage 435 and a water inlet passage 436 therein. The bleeding channel 435 communicates with the internal space surrounded by the filter membrane 12, and the bleeding port 431 is tubular, is provided perpendicularly to the side wall of the second cover 43, and communicates with the bleeding channel 435 inside the second cover 43. The water inlet passage 436 communicates with the inside of the hollow fiber tube of the temperature changing member 31, and the water inlet 432 is tubular, is provided vertically to the side wall of the second cover 43, and communicates with the water inlet passage 436 inside the second cover 43.
The filtration temperature-changing process of the filtration temperature-changing device in this embodiment is as follows: human blood enters from the blood inlet 411, then enters the outside of the hollow fiber tube of the temperature changing part 31 through the second through holes 331 uniformly distributed on the partition part 33, then enters the outside of the filtering membrane 12 through the first through holes 211 uniformly distributed on the inner core tube 21, then is filtered by the filtering membrane 12, enters the bleeding channel 435 through the inner space of the filtering membrane 12, and finally flows out from the blood outlet 431. Meanwhile, the temperature-changing water enters the water inlet channel 436 from the water inlet 432, enters the inside of the hollow fiber tube of the temperature changing member 31, passes through the annular channel 423, and is discharged from the water outlet 421. The temperature-changing water passes through the inside of the hollow fiber tube of the temperature changing member 31, the blood passes through the outside of the hollow fiber tube of the temperature changing member 31, and the purpose of raising or lowering the blood can be achieved by exchanging heat between the temperature-changing water and the blood, so that the temperature-changing process of the blood is completed, and the blood after temperature change is recycled into the human body. And blood flows out through the filtering membrane 12 at last, because the existence of the fold structure of the filtering membrane 12, the blood can be in full contact with the filtering membrane 12, and the micro-thrombus in the blood is filtered out, so that the blood filtering efficiency and effect are ensured.
Referring back to fig. 1 and 2, further, the outer housing 41 also has a pressure tap 412. Specifically, the pressure measuring port 412 is tubular, is provided on the outer wall of the outer casing 41, and communicates with the inside of the outer casing 41. Through the provision of the pressure tap 412 to facilitate testing of the internal pressure of the filter temperature change device.
Preferably, the second cover 43 further has a temperature measuring port 433; the temperature measuring port 433 is communicated with the bleeding port 431. Specifically, the temperature measuring port 433 is tubular, is provided on the outer wall of the bleeding port 431, and communicates with the inside of the bleeding port 431. Through the setting of temperature measurement mouth 433 to carry out the temperature measurement to the blood that flows out and filter the temperature change device, thereby can carry out nimble regulation to the alternating temperature effect of filtering the temperature change device according to the temperature of flowing out blood.
Preferably, the second cover 43 further has a vent 434. The gas outlet 434 communicates with the inner space of the filter membrane 12. Specifically, the exhaust port 434 is tubular, is disposed on the outer wall of the second cover 43, and is communicated with the bleeding channel 435 of the second cover 43. An isolation diaphragm is disposed within the exhaust port 434, which is capable of passing gas therethrough while blocking blood. In this way, by providing the exhaust port 434, the excess gas in the blood can be removed, and the generation of blood bubbles can be avoided.
In summary, in the embodiment, by the arrangement of the filter membrane with the pleated structure, the filtering area of the filter membrane inside the filtering temperature varying device is increased, and the effect of the conventional arrangement on the outer circumference can be achieved in the inner circumference of the filtering temperature varying device, the flow channel of blood gradually changes from one large circumference to one small circumference, and the flow pressure of blood in the filtering temperature varying device is also a gradual change process, so that compared with the flow channel of conventional blood diffusing from the inner circumference to the outer circumference, the flow pressure of blood is subjected to a process of being rapidly increased and then gradually decreased, and the filtering temperature varying device of the present application causes less damage to blood; meanwhile, the filtering membrane with the fold structure can further be washed by the folding back of the macromolecular micro-plugs in the blood in the fold area, so that the filtering efficiency and effect are enhanced; through setting up the filtration pore of equidimension not and the clearance between hole and the hole, can play the drainage reposition of redundant personnel effect to blood on the one hand, on the other hand still can carry out stage filtration to the micro-plug of different molecular sizes, strengthens filtration efficiency and effect by a wide margin. In addition, the filtering temperature changing device is also integrated with the functions of pressure measurement, temperature measurement and bubble capture, and the filtering temperature changing effect of the filtering temperature changing device is further improved.
The above is merely an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. A filtered temperature change device, comprising:
a filtering assembly (1) comprising a filtering support (11) and a filtering membrane (12); the filtering membranes (12) are wound on the filtering support pieces (11) in a staggered mode and surround to form an inner space, and the filtering membranes (12) are of a corrugated structure;
the inner core component (2) is sleeved outside the filtering component (1);
the temperature changing component (3) is sleeved outside the inner core component (2); and
a case assembly (4) including an outer case (41), a first cover (42), and a second cover (43); the outer shell (41) is sleeved outside the temperature change component (3), and the first cover body (42) and the second cover body (43) are respectively arranged at two opposite ends of the outer shell (41); the outer shell (41) is provided with a blood inlet (411), and the blood inlet (411) is communicated with the outside of the temperature changing component (3) and the outside of the inner core component (2) and the filtering membrane (12); the second cover body (43) is provided with a blood outlet (431) and a water inlet (432), and the blood outlet (431) is communicated with the inner space of the filtering membrane (12); the first cover body (42) is provided with a water outlet (421), and the water inlet (432) and the water outlet (421) are respectively communicated with the inside of the temperature changing assembly (3).
2. The filter temperature change device according to claim 1, wherein said filter support (11) comprises a plurality of first support bars (111) and a plurality of second support bars (112); a plurality of the first support bars (111) are arranged along a first circumferential direction, and a plurality of the second support bars (112) are arranged along a second circumferential direction; the diameter of the first circumference is smaller than that of the second circumference, and the first circumference is overlapped with the center point of the second circumference; the filtering membrane (12) is sequentially wound on the first supporting rod (111) and the second supporting rod (112).
3. The filter temperature changing device according to claim 2, wherein said filter support (11) further comprises two support rod mounts (113); two ends of the first supporting rod (111) and two ends of the second supporting rod (112) are respectively arranged on the two supporting rod mounting seats (113).
4. The filter temperature changing device according to claim 1, wherein the pore size of the filter pores (121) of the filter membrane (12) becomes gradually larger along the direction from the blood inlet (411) to the blood outlet (431).
5. The filter temperature change device according to claim 1, wherein said core assembly (2) comprises a core tube (21); the inner core tube (21) is provided with a plurality of first through holes (211); the inner core pipe (21) is sleeved outside the filter assembly (1).
6. The filtering temperature change device according to claim 1, characterized in that said temperature change member (3) comprises a temperature change member (31) and two sealant members (32), said temperature change member (31) being sleeved outside said core member (2); the two glue sealing pieces (32) are respectively arranged at two opposite ends of the temperature changing piece (31); the blood inlet (411) is communicated with the outside of the temperature changing part (31); the water inlet (432) and the water outlet (421) are respectively communicated with the inside of the temperature changing part (31).
7. The filter temperature change device according to claim 6, wherein said temperature change assembly (3) further comprises a divider member (33); the partition plate (33) is sleeved outside the temperature changing part (31), and a plurality of second through holes (331) are formed in the partition plate (33); the blood inlet (411) is communicated with the outside of the temperature changing member (31) through the partition member (33).
8. The filter temperature change device according to claim 1, wherein the outer housing (41) further has a pressure tap (412).
9. The filter temperature change device according to claim 1, wherein said second cover (43) further has a temperature measuring port (433); the temperature measuring port (433) is communicated with the bleeding port (431).
10. The filter temperature change device according to claim 1, wherein said second cover (43) further has a vent (434); the gas outlet (434) communicates with the internal space of the filter membrane (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011611174.3A CN112774441A (en) | 2020-12-30 | 2020-12-30 | Filtering temperature changing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011611174.3A CN112774441A (en) | 2020-12-30 | 2020-12-30 | Filtering temperature changing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112774441A true CN112774441A (en) | 2021-05-11 |
Family
ID=75753887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011611174.3A Pending CN112774441A (en) | 2020-12-30 | 2020-12-30 | Filtering temperature changing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112774441A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117599274A (en) * | 2024-01-05 | 2024-02-27 | 江苏赛腾医疗科技有限公司 | Membrane oxygenator |
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| EP1031810A2 (en) * | 1999-02-26 | 2000-08-30 | Tadayoshi Nagaoka | Filter-heat exchanger |
| RU2229921C2 (en) * | 1999-05-20 | 2004-06-10 | Прэтт энд Уитни Кэнэдэ Корп. | Combined unit of heat exchanger and fluid medium filter |
| US20040216434A1 (en) * | 2003-05-02 | 2004-11-04 | Gunderson Larry T. | Filter with efficiently sealed end |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117599274A (en) * | 2024-01-05 | 2024-02-27 | 江苏赛腾医疗科技有限公司 | Membrane oxygenator |
| CN117599274B (en) * | 2024-01-05 | 2024-04-23 | 江苏赛腾医疗科技有限公司 | Membrane oxygenator |
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Application publication date: 20210511 |