CN116510105A - Medical pump device and in-vitro life support system - Google Patents
Medical pump device and in-vitro life support system Download PDFInfo
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- CN116510105A CN116510105A CN202210079778.0A CN202210079778A CN116510105A CN 116510105 A CN116510105 A CN 116510105A CN 202210079778 A CN202210079778 A CN 202210079778A CN 116510105 A CN116510105 A CN 116510105A
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- heat
- pump
- heat dissipation
- motor
- housing
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 82
- 238000001704 evaporation Methods 0.000 claims description 13
- 230000008020 evaporation Effects 0.000 claims description 12
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- 238000009833 condensation Methods 0.000 claims description 11
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- 206010018910 Haemolysis Diseases 0.000 abstract description 5
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Classifications
-
- 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
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
-
- 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
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/1621—Constructional aspects thereof
-
- 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
-
- 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
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/104—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body
- A61M60/109—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body incorporated within extracorporeal blood circuits or systems
- A61M60/113—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body incorporated within extracorporeal blood circuits or systems in other functional devices, e.g. dialysers or heart-lung machines
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/81—Pump housings
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/845—Constructional details other than related to driving of extracorporeal blood pumps
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Cardiology (AREA)
- Vascular Medicine (AREA)
- Urology & Nephrology (AREA)
- Mechanical Engineering (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides a medical pump device, the device comprising: the device comprises a pump head, a pump upper cover, a pump shell, a motor and a heat dissipation assembly; the pump head is connected with the pump upper cover; the pump casing is adapted to the pump upper cover to form an accommodating space; the motor and the heat dissipation assembly are positioned in the accommodating space; the heat dissipation assembly is used for conducting heat in the accommodating space to the pump shell. The device is used for guiding the heat of the motor in the pump head to the pump casing, so that hemolysis of blood cells in the pump head caused by overhigh temperature is avoided.
Description
Technical Field
The invention relates to the technical field of extracorporeal membrane oxygenation, in particular to a medical pump device and an extracorporeal life support system.
Background
An extracorporeal life support system typically includes a connection tube, a medical pump, an oxygenator, an oxygen supply tube, and a host. The medical pump mainly realizes body fluid flow by driving the centrifugal pump head to rotate and generally consists of a pump head and a driving pump machine.
When the medical pump is operated, the generated heat can affect body fluid and surrounding tissue cells. Too high a temperature can affect the service life of insulating materials inside the medical pump motor and the running stability of the motor, and further can improve the hemolysis degree of blood cells. Researches prove that when the temperature of human erythrocytes is too high, the hemolysis degree can be greatly improved; when the temperature of the implanted artificial device in human tissue is too high, the surrounding tissue is damaged, and inflammation can be caused at the implantation position; even necrosis of surrounding cellular tissue; when the blood temperature is too high, the oxygen carrying capacity of hemoglobin is reduced and even its structural function is impaired. Accordingly, there is a need for a medical pump device and an in vitro life support system to ameliorate the above problems.
Disclosure of Invention
The object of the present invention is to provide a medical pump device and an in vitro life support system for guiding the heat of a motor in a pump head to a pump housing, avoiding hemolysis of blood cells in the pump head due to excessive temperature.
In a first aspect, the present invention provides a medical pump apparatus, the apparatus comprising: the device comprises a pump head, a pump upper cover, a pump shell, a motor and a heat dissipation assembly; the pump head is connected with the pump upper cover; the pump casing is adapted to the pump upper cover to form an accommodating space; the motor and the heat dissipation assembly are positioned in the accommodating space; the heat dissipation assembly is used for conducting heat in the accommodating space to the pump shell.
The medical pump device has the beneficial effects that the heat from the motor is conducted to the pump shell through the heat dissipation component arranged in the pump shell, the original heat dissipation path is changed, the heat transferred to the pump head is reduced, the pump shell dissipates the heat into the air, the thermal damage to blood cells is reduced, the hemolysis of the blood cells in the pump head caused by overhigh temperature is avoided, the use safety is improved, the tissue damage and inflammation of the blood cells caused by high temperature are avoided, and the oxygen carrying capacity of hemoglobin in the blood cells is not influenced.
Optionally, the heat dissipation assembly includes at least one first heat dissipation element and/or at least one second heat dissipation element, where the first heat dissipation element and the second heat dissipation element are disposed around the motor in different arrangements.
Optionally, each of the first heat dissipation element and the second heat dissipation element includes a heat dissipation fin, a heat dissipation tube, and a heat conduction portion connecting the heat dissipation fin with the heat dissipation tube, where the heat conduction portion of the first heat dissipation element is used to be attached to or adjacent to an outer wall of the motor so as to conduct heat of the motor to the pump casing.
Optionally, the radiating pipe contains the working medium, the radiating pipe includes the tube shell and is located the liquid suction core of tube shell inboard.
Optionally, the radiating pipe includes evaporation section, condensation section and is located evaporation section with the thermal-insulated section between the condensation section.
Optionally, the device further comprises a magnetic levitation coil; an impeller is arranged in the pump head, and a magnet is arranged on one side provided with the impeller; the magnetic suspension coil is used for generating a magnetic field to support the magnet; the heat conduction part of the second heat dissipation part is used for being attached to or adjacent to the outer wall of the magnetic suspension coil.
Optionally, a first heat pipe connection hole and a second heat pipe connection hole for respectively at least partially accommodating the heat dissipation pipes of the first heat dissipation piece and the second heat dissipation piece are formed on the inner side of the pump casing.
Optionally, a shell cooling fin is arranged on one side of the pump shell, and the shell cooling fin is fin-like, plate-like or rod-like.
Optionally, the housing heat sink and the heat sink assembly are at least partially made of metal or alloy.
In a second aspect, the present invention provides an in vitro life support system comprising: a medical pump apparatus as in the first aspect; the oxygenator is used for being matched with the medical pump device to exchange gas.
Drawings
FIG. 1 is an exploded view of a medical pump device provided by the present invention;
fig. 2 is a schematic view of the overall structure of a medical pump device according to the present invention;
FIG. 3 is a schematic view of a pump casing according to the present invention;
fig. 4 is a schematic structural diagram of a second heat dissipation element according to the present invention;
fig. 5 is a schematic structural diagram of a first heat dissipation element according to the present invention;
fig. 6 is a schematic perspective view of a heat pipe according to the present invention;
fig. 7 is an internal schematic view of a radiating pipe provided by the present invention;
fig. 8 is a schematic diagram of a heat transfer process of a heat dissipating assembly according to the present invention.
Reference numerals in the drawings:
100. a pump head;
200. a pump upper cover;
300. a heat dissipation assembly; 301. a heat sink; 302. a heat radiating pipe; 303. a heat conducting agent; 304. a first heat sink; 305. a second heat sink;
400. a magnetic levitation coil;
500. a motor;
600. a pump housing; 601. a housing fin; 602. a first heat pipe connection hole; 603. a second heat pipe connection hole;
701. a tube shell; 702. a wick; 703. an evaporation section; 704. a condensing section; 705. a heat insulation section; 706. a liquid-vapor interface; 707. a vapor-liquid interface.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. Unless otherwise defined, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and the like means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof without precluding other elements or items.
FIG. 1 is an exploded view of a medical pump device provided by the present invention; fig. 2 is a schematic view of the overall structure of a medical pump device according to the present invention.
In view of the problems with the prior art, the present invention provides a medical pump device for an extracorporeal life support system, as shown in fig. 1 and 2, the device comprising: pump head 100, pump top cover 200, pump housing 600, motor 500, and heat dissipating assembly 300. Catheters are arranged on two sides of the pump head 100 and are respectively used for leading body fluid into and out of the pump head 100. The pump head 100 is configured as a centrifugal pump. The pump upper cover 200 is arranged in a disc shape. The pump top cover 200 is located at one side of the pump head 100. The pump housing 600 is located on the underside of the pump top cover 200. The pump housing 600 is provided in a cylindrical shape. The pump upper cover 200 is fastened to the top end of the pump housing 600 by screws. The pump housing (600) is adapted to the pump upper cover (200) to form a receiving space. The motor (500) and the heat dissipation assembly 300 are located in the accommodating space. When the motor 500 is energized, the motor 500 drives the impeller (not shown) in the pump head 100 to rotate, thereby driving the body fluid in the pump head 100 to flow. When the motor 500 is operated, the generated heat is conducted to the pump housing 600 through the heat dissipation assembly 300. The pump housing 600 dissipates the heat into the air.
In other embodiments, the pump head 100 may be configured as any type of liquid pump; an impeller (not shown) may be rotatably coupled within the pump head 100. The pump cover 200 may be attached to the top end of the pump housing 600. The pump housing 600 may be provided in any solid geometry where hollow cavities exist. The pump top cover 200 may be any solid geometry that covers one side of the pump housing 600. The pump housing 600 may dissipate the heat to other heat dissipating mediums.
It should be noted that the heat dissipation assembly 300 is provided with a working medium. The working fluid near the proximal end of the motor 500 conducts heat to the distal end of the heat sink away from the motor 500 after being heated. The working medium is heated and converted into a gaseous state when in a liquid state, and is cooled and converted into a liquid state when in the gaseous state. By the phase change of the working medium when the working medium is positioned at the heated end and the cooled end of the heat radiation assembly 300, the phase change is changed from a liquid state to a gas state, or the working medium is changed from the gas state to the liquid state, so that rapid heat radiation is realized, and the heat radiation effect of the motor is ensured.
The heat dissipation assembly 300 includes at least one first heat dissipation element 304 and/or at least one second heat dissipation element 305, and the first heat dissipation element 304 and the second heat dissipation element 305 are disposed around the motor 500 in different arrangements.
It should be noted that the above-mentioned different arrangements may be any arrangement, for example, the heat dissipation portion of the first heat dissipation element 304 is located at a side of the motor 500, and the heat dissipation portion of the second heat dissipation element 305 is located at a top of the motor 500.
In some embodiments of the invention, the apparatus further comprises a magnetic levitation coil 400. An impeller (not shown) is arranged in the pump head, and a magnet is arranged on one side provided with the impeller (not shown); the magnetic levitation coil 400 is used to generate a magnetic field to support the magnet; the heat conduction part of the second heat dissipation part is used for being attached to or adjacent to the outer wall of the magnetic suspension coil. When the magnetic suspension coil is electrified, magnetic force is generated to act on the magnet, and the magnet drives the impeller (not shown in the figure) to be in a magnetic suspension state, so that the mechanical abrasion during the rotation of the impeller (not shown in the figure) is reduced, and the body fluid is prevented from being polluted.
In some embodiments of the invention, the magnetic levitation coil 400 is positioned below the pump upper cover 200. The magnetic levitation coil 400 generates a magnetic field that acts on the magnet when energized, causing the impeller (not shown) to levitate, reducing mechanical wear within the impeller (not shown) and the pump head 100.
In some embodiments of the present invention, the number of heat dissipation elements in the heat dissipation assembly 300 is 8, and the heat dissipation elements are disposed in the pump housing 600 in two layers. The first heat dissipation elements 304 on the upper layer are symmetrically disposed around the magnetic levitation coil 400. The second heat sink 305 positioned at the lower layer is circumferentially symmetrically disposed around the motor 500. The sufficient heat dissipation of the magnetic levitation coil 400 is achieved.
In other embodiments of the present invention, the number of heat dissipation elements in the heat dissipation assembly 300 is arbitrary, and may be distributed at any position of the pump casing according to the requirements.
Fig. 3 is a schematic structural view of a pump casing according to the present invention.
As shown in fig. 1 and 3, in some embodiments of the present invention, the pump housing 600 is provided with a first heat pipe connection hole 602 and a second heat pipe connection hole 603. The first heat sink 304 is partially inserted into the first heat pipe connection hole 602. The second heat sink 305 is partially inserted into the second heat pipe connection hole 603. This arrangement increases the contact area of the heat sink with the pump housing 600, ensuring adequate heat dissipation.
Fig. 4 is a schematic structural diagram of the second heat dissipation element 305 according to the present invention; fig. 5 is a schematic structural diagram of the first heat dissipation element 304 according to the present invention.
In some embodiments of the present invention, the heat pipes 302 of the first heat sink 304 and the second heat sink 305 are detachably connected, e.g., slidably connected, to the inner side of the pump casing 600 through the first heat pipe connection holes 602 and the second heat pipe connection holes 603 as shown in fig. 4 and 5.
In other embodiments, the heat pipe 302 may be attached to the inside of the pump housing 600 in other ways, such as by other connection members disposed on the inside of the pump housing 600.
In some embodiments of the present invention, the housing heat sink 601 is arranged around the pump housing 600 in a fin-like shape, and the housing heat sink 601 is fixedly connected or detachably connected to the outside of the pump housing 600. The number of the shell cooling fins 601 is a plurality, and a gap exists between every two adjacent shell cooling fins 601. This arrangement increases the heat dissipation area of the pump housing 600, facilitating heat dissipation.
In other embodiments, the housing fins 601 may be any three-dimensional shape, such as a plate or bar arrangement. The heat dissipation device is suitable for different heat dissipation scenes and is favorable for fully dissipating heat.
In some embodiments of the invention, a sealing ring is provided between the pump top cover 200 and the pump housing 600. The pump upper cover 200 is locked to the top side of the pump housing 600 by screws. The pump upper cover 200 compresses the sealing ring on the top end of the pump housing 600, so as to realize sealing connection. Is favorable for preventing water and dust, avoiding dust and water from entering the pump casing, and prolonging the service life of the medical pump device.
In other embodiments, the pump cap 200 may be adhered to the top end of the pump housing 600 by a sealant or other waterproof adhesive material. The pump top cover 200 may also be secured to the top end of the pump housing 600 by a seamless weld.
In some embodiments of the invention, the housing fins and the heat sink assembly are at least partially made of metal or alloy. This arrangement is advantageous for increasing the heat dissipation speed and sufficiently dissipating heat.
As shown in fig. 4, in some embodiments of the present invention, each of the first and second heat dissipation elements includes a heat dissipation plate 301, a heat dissipation tube 302, and a heat conduction portion 303 connecting the heat dissipation plate and the heat dissipation tube, and the heat conduction portion 303 of the first heat dissipation element is configured to be attached to or adjacent to an outer wall of the motor 500 so as to conduct heat of the motor to the pump housing 600. The heat conducting part 303 is attached to the outer wall of the motor 500, which is favorable for ensuring the heat dissipation area of the motor 500 and improving the heat dissipation effect of the motor 500.
In some embodiments of the present invention, the heat sink 301 may be provided in a fin shape. The heat dissipating pipe 302 is provided in a U-shape and one end is connected to the heat dissipating fin 301 through the heat dissipating part 303.
As shown in fig. 5, the first heat sink 304 includes a heat sink 301, a heat pipe 302, and a heat conductive portion 303. The heat sink 301 has one side connected to the end of the heat pipe 302 and the other side connected to the heat conducting part 303. The radiating pipe 302 is L-shaped. The heat conducting portion 303 is made of heat conducting silicone grease or other materials that facilitate heat conduction, and is shaped to match the shape of the magnetic levitation coil 400, so as to improve heat dissipation efficiency.
In other embodiments, the radiating pipe is configured as a Vapor Chamber (VC) or other thermally conductive element. The thermally conductive portion may be provided as a thermally conductive phase change material, a thermally conductive filler material, or other thermally conductive portion.
In some embodiments of the present invention, the heat sink 301 of the first heat sink 304 is made of copper or copper alloy. The heat sink 301 of the second heat sink 305 is made of aluminum or aluminum alloy.
In other embodiments, the heat sink 301 may be made of other metals or alloys.
Fig. 6 is a schematic perspective view of a heat pipe according to the present invention; fig. 7 is an internal schematic view of the radiating pipe provided by the invention.
In some embodiments, as shown in fig. 6 and 7, the heat dissipation tube 302 of each of the first heat dissipation element 304 and the second heat dissipation element 305 includes a tube housing 701 and a wick 702, and the wick 702 is distributed inside the tube housing 701. The radiating pipe 302 has an evaporation section 703 and a condensation section 704. When the liquid-vapor interface 706 of the evaporation section 703 of the heat dissipation tube 302 is heated, the liquid working medium in the liquid suction core 702 is evaporated, the gaseous working medium flows to the condensation section 704 under a slight pressure difference, the gaseous working medium is condensed into the liquid working medium at the vapor-liquid interface 707 of the condensation section 704 by releasing heat, and the liquid working medium flows back to the evaporation section 703 along the liquid suction core 702 by capillary force. The heat is transferred from the evaporator section 703 of the heat pipe 302 to the condenser section 704 without any change in the cycle.
Fig. 8 is a schematic diagram of a heat transfer process of a heat dissipating assembly according to the present invention.
It should be noted that, as shown in fig. 8, the heat transfer process of the radiating pipe includes the following steps:
s801, heat is transferred from a heat source to a liquid-vapor interface through a shell of a radiating pipe and a liquid suction core filled with working medium;
s802, evaporating the liquid working medium on a liquid-vapor interface in an evaporation section;
s803, enabling the gaseous working medium in the tube shell to flow from the evaporation section to the condensation section;
s804, condensing the gaseous working medium on a vapor-liquid interface in a condensing section:
s805, heat is transferred to a cold source from a vapor-liquid interface through a liquid suction core, a working medium and a tube shell:
s806, the condensed liquid working medium flows back to the evaporation section in the liquid absorption core due to capillary action.
In some embodiments, a heat insulation section 705 is disposed between the evaporation section 703 and the condensation section 704 of the heat dissipation assembly, and the heat insulation section 705 is configured to insulate heat in a partial area of the heat dissipation assembly 300 from the outside, so as to avoid the heat dissipation effect from being affected by the condensation of the gaseous working medium in advance.
In some embodiments, the wick has a capillary structure comprising a mesh, fiber, powder sinter, or grooved arrangement.
In some embodiments, the working fluid comprises at least one of water, methanol, acetone, sodium, mercury.
In some embodiments, the air pressure in the housing 701 is negative. This arrangement allows the evaporative condensation of the working fluid to occur at a temperature below the normal boiling point of the working fluid.
In some embodiments, the air pressure in the housing 701 is, for example, [ 1.3X10 ] -4 ,1.3×10 -3 ]Pa。
In some embodiments, the outside of the wick 702 is against the inside wall of the cartridge 701.
In the simulation test of the medical pump in the prior art, the temperature of the upper cover of the pump is 68.2 ℃, and the temperature of the shell of the pump is 53.77 ℃.
In the medical pump device according to the present invention, the heat radiation pipe 302, the heat radiation fins 301, the heat conduction portion 303, and the housing heat radiation fins 601 are provided in the pump housing 600 during the simulation test. The temperature of the pump upper cover 200 was 54.01 deg.c and the temperature of the pump housing 600 was 54.7 deg.c.
By arranging the radiating pipe 302, the radiating fin 301, the heat conducting part 303 and the housing radiating fin 601, the temperature of the pump upper cover 200 is reduced by 14.19 ℃, and damage to blood cells can be effectively reduced.
The present invention also provides an in vitro life support system comprising: the medical pump device as in any one of the preceding embodiments. The extracorporeal life support system further comprises an oxygenator. The oxygenator is used for being matched with the medical pump device to exchange gas.
It should be noted that a heat dissipation assembly 300 and the pump housing 600 may be disposed on one side of the oxygenator, so as to guide heat in the oxygenator to the pump housing 600.
In some embodiments of the invention, the medical pump device withdraws bodily fluids from the patient. Under the action of the oxygenator of the in-vitro life support system, oxygen is injected into the body fluid, carbon dioxide in the body fluid is separated out, and the body fluid is conveyed back into the human body.
While embodiments of the present invention have been described in detail hereinabove, it will be apparent to those skilled in the art that various modifications and variations can be made to these embodiments. It is to be understood that such modifications and variations are within the scope and spirit of the present invention as set forth in the following claims. Moreover, the invention described herein is capable of other embodiments and of being practiced or of being carried out in various ways.
Claims (10)
1. A medical pump device, the device comprising: the pump comprises a pump head (100), a pump upper cover (200), a pump shell (600), a motor (500) and a heat dissipation assembly (300);
the pump head (100) is connected with the pump upper cover (200);
-the pump housing (600) is adapted with the pump upper cover (200) to form a receiving space;
the motor (500) and the heat dissipation assembly (300) are positioned in the accommodating space;
the heat dissipation assembly (300) is used for conducting heat in the accommodating space to the pump casing (600).
2. The device according to claim 1, characterized in that the heat dissipating assembly (300) comprises at least one first heat dissipating member (304) and/or at least one second heat dissipating member (305), the first heat dissipating member (304) and the second heat dissipating member (305) being arranged around the motor (500) in different arrangements.
3. The apparatus of claim 2, wherein the device comprises a plurality of sensors,
each of the first heat dissipation element (304) and the second heat dissipation element (305) comprises a heat dissipation sheet (301), a heat dissipation tube (302) and a heat conduction portion (303) for connecting the heat dissipation sheet with the heat dissipation tube, wherein the heat conduction portion (302) of the first heat dissipation element (304) is used for being attached to or adjacent to the outer wall of the motor (500) so as to conduct heat of the motor to the pump casing (600).
4. A device according to claim 3, characterized in that the heat-radiating pipe (302) contains a working substance, which heat-radiating pipe comprises a pipe shell (701) and a wick (702) located inside the pipe shell (701).
5. A device according to claim 3, characterized in that the radiating pipe (302) comprises an evaporation section (703), a condensation section (704) and a heat insulation section (705) between the evaporation section (703) and the condensation section (704).
6. A device according to claim 3, characterized in that the device further comprises a magnetic levitation coil (400); an impeller is arranged in the pump head (100) and a magnet is arranged on one side provided with the impeller; the magnetic levitation coil (400) is used for generating a magnetic field to support the magnet; the heat conducting part (303) of the second heat radiating piece is used for being attached to or adjacent to the outer wall of the magnetic suspension coil (400).
7. The apparatus of claim 3, wherein the device comprises a plurality of sensors,
a first heat pipe connection hole (602) and a second heat pipe connection hole (603) for respectively accommodating the heat radiation pipe (302) of the first heat radiation member (304) and the second heat radiation member (305) are arranged on the inner side of the pump casing (600).
8. The device according to claim 1, characterized in that one side of the pump housing (600) is provided with housing fins (601), the housing fins (601) being fin-like, plate-like or rod-like.
9. The device of claim 8, wherein the housing heat sink (601) and the heat sink assembly (300) are at least partially made of metal or alloy.
10. An in vitro life support system, comprising: an oxygenator and a medical pump device according to any one of claims 1 to 9; the oxygenator is used for being matched with the medical pump device to exchange gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210079778.0A CN116510105A (en) | 2022-01-24 | 2022-01-24 | Medical pump device and in-vitro life support system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210079778.0A CN116510105A (en) | 2022-01-24 | 2022-01-24 | Medical pump device and in-vitro life support system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116510105A true CN116510105A (en) | 2023-08-01 |
Family
ID=87392683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210079778.0A Pending CN116510105A (en) | 2022-01-24 | 2022-01-24 | Medical pump device and in-vitro life support system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116510105A (en) |
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2022
- 2022-01-24 CN CN202210079778.0A patent/CN116510105A/en active Pending
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