CN107126588B - On-bladed blood pump with buffer layer - Google Patents
On-bladed blood pump with buffer layer Download PDFInfo
- Publication number
- CN107126588B CN107126588B CN201710466104.5A CN201710466104A CN107126588B CN 107126588 B CN107126588 B CN 107126588B CN 201710466104 A CN201710466104 A CN 201710466104A CN 107126588 B CN107126588 B CN 107126588B
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- blood
- separator
- rotor
- spiral case
- cavity
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- 210000004369 blood Anatomy 0.000 title claims abstract description 217
- 239000008280 blood Substances 0.000 title claims abstract description 217
- 239000000872 buffer Substances 0.000 title claims abstract description 51
- 239000007853 buffer solution Substances 0.000 claims abstract description 68
- 239000007788 liquid Substances 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000006378 damage Effects 0.000 abstract description 14
- 206010018910 Haemolysis Diseases 0.000 abstract description 9
- 230000008588 hemolysis Effects 0.000 abstract description 9
- 230000036770 blood supply Effects 0.000 abstract description 8
- 208000027418 Wounds and injury Diseases 0.000 abstract description 7
- 208000014674 injury Diseases 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 230000017531 blood circulation Effects 0.000 abstract description 5
- 230000001732 thrombotic effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 9
- 239000007787 solid Substances 0.000 description 8
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000005381 potential energy Methods 0.000 description 5
- 230000001141 propulsive effect Effects 0.000 description 5
- 241000237858 Gastropoda Species 0.000 description 4
- 208000007536 Thrombosis Diseases 0.000 description 4
- 230000004087 circulation Effects 0.000 description 4
- 230000001186 cumulative effect Effects 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 3
- 210000003743 erythrocyte Anatomy 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—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
- A61M60/40—Details relating to driving
-
- 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
- A61M60/818—Bearings
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Mechanical Engineering (AREA)
- Anesthesiology (AREA)
- Cardiology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- External Artificial Organs (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of on-bladed blood pumps with buffer layer.The on-bladed blood pump with buffer layer includes spiral case, rotor, guiding subassembly, power plant and the first separator, the spiral case is equipped with the first cavity and the first inlet being connected to first cavity, the first liquid outlet, buffer inlet and buffer solution outlet, first separator and the rotor are arranged in first cavity, the second inlet and the second liquid outlet that first separator is equipped with the second cavity and is connected to second cavity.The confession that such mode carries out blood should be able to make the blood flow of needs supply be in laminar condition, blood is not susceptible to haemolysis and thrombotic phenomena, the mode of laminar flow will not squeeze blood simultaneously, avoid the destruction to blood, buffer solution can be injected as needed simultaneously, it is smaller to blood injury, prolonged blood supply can be carried out, it disclosure satisfy that the requirement for supplying blood for a long time, ensure the quality of blood.
Description
Technical field
The present invention relates to blood conveying devices, more particularly to a kind of on-bladed blood pump with buffer layer.
Background technology
Conventional blood pump, blood are promoted by blade, and blade can bring bigger motive force to blood, but also bring along
Bigger disturbance, blood are generally kept in turbulent flow state.Since wheel speed is excessively high, make the red blood cell in blood and leaf
Impact damage occurs for piece and pump wall etc., is easy to cause red blood cell breakage, by haemolysis caused by red blood cell breakage still ten
Divide serious.This pump can only use the shorter time.Be unfavorable for using need the occasion of long-time stable blood supply (such as in liver
In the case that perfusion etc. needs blood supply above for 24 hours, the blood pump that blade promotes is difficult to meet the requirements).In occlusion pump rotation process
Larger injury can also cause blood to the extruding of pipeline, can not use for a long time.
Invention content
Based on this, it is necessary to which the problems such as being easy to happen haemolysis for blood, can not supply for a long time provides one kind and be not easy to send out
Raw haemolysis, the on-bladed blood pump with buffer layer that can be supplied for a long time.
A kind of on-bladed blood pump with buffer layer, including spiral case, rotor, guiding subassembly, power plant and first separate
Part, the first inlet, the first liquid outlet, the buffer inlet that the spiral case is equipped with the first cavity and is connected to first cavity
And buffer solution outlet, first separator and the rotor are arranged in first cavity, first separator is set
The second inlet and the second liquid outlet for having the second cavity and being connected to second cavity, first separator are set in institute
It states on rotor, is fixedly connected by the guiding subassembly between first separator and the rotor, first separator
Inner wall and the outer wall of the rotor between form laminar flow channel, the inner wall of the both ends of first separator with the spiral case
Offset, first separator can be rotated relative to the spiral case, the outer wall of first separator and the inner wall of the spiral case it
Between be enclosed buffer solution accommodating chamber, the buffer solution accommodating chamber and the buffer inlet and the buffer solution outlet,
First inlet, second inlet, the laminar flow channel, second liquid outlet and first liquid outlet are successively
Connection, the power plant is for driving the rotor to rotate.
The above-mentioned on-bladed blood pump with buffer layer, when work, power plant drives rotor rotation, blood enter spiral case it
After will enter laminar flow channel in, the blood into laminar flow channel will carry out laminar flow under the drive of rotor and the first separator, together
When laminar flow channel in blood will generate certain potential energy, this part blood will be discharged by the outlet of laminar flow channel, it is final all
Blood is exported by the first liquid outlet, carries out the supply of blood, can be injected in buffer inlet during conveying blood slow
Fliud flushing, the buffer solution of injection certain pressure can reduce blood and enter in buffer solution accommodating chamber in buffer solution accommodating chamber, big absolutely
Part blood will be located in laminar flow channel, and conveying power foot reduces the extruding to blood, while can increase buffering if necessary
The pressure of liquid, makes buffer solution enter in blood；The blood stream that the confession of blood should be able to be such that needs supply is carried out in this manner
Dynamic to be in laminar condition, blood is not susceptible to haemolysis and thrombotic phenomena, while the mode of laminar flow will not squeeze blood, delays
The setting of fliud flushing accommodating chamber can be such that blood is in laminar flow channel, avoid the destruction to blood, while can note as needed
Enter buffer solution, it is smaller to blood injury, prolonged blood supply can be carried out, disclosure satisfy that and supply wanting for blood for a long time
It asks, ensures the quality of blood.
Above-mentioned technical proposal is further described below：
The spiral case includes feed liquor portion, side plate and bottom plate, the feed liquor portion, the side plate in one of the embodiments,
And the bottom plate is fixedly connected sequentially to form first cavity, the feed liquor portion is equipped with first inlet, the feed liquor
The diameter in portion gradually increases along the flow direction of blood, and the side plate is equipped with first liquid outlet, and the rotor includes promotion part
And support portion, the promotion part are fixedly connected with the support portion, the diameter of the promotion part gradually increases along the flow direction of blood
Greatly, tangential chambers are formed between the support portion and the side plate, first separator is set on the promotion part, and described
It is fixedly connected by the guiding subassembly between one separator and the promotion part, first separator is located at the promotion part
Between the feed liquor portion.Feed liquor portion diameter from top to bottom gradually increases the size that can reduce buffer solution accommodating chamber, promotion part
Diameter from top to bottom gradually increases the laminar flow channel that can make up arc, can increase blood by the cooperation of such structure and push away
Into portion and the contact area of the first separator, blood makes the blood of output more stablize, output effect by by the propulsive force of bigger
Fruit is more preferable.
The guiding subassembly includes several conducting elements circumferentially in one of the embodiments,.
Further include the second separator in one of the embodiments, second separator is located at first separator
Between the rotor, the guiding subassembly is two groups, and guiding subassembly described in one of which is for being fixedly connected with described second point
Spacing body and the rotor, guiding subassembly described in another group is for being fixedly connected with first separator and second separator.
Increase by the second separator, the contact area with blood can be increased, increase laminar flow power, conveying effect is more preferable.
The first cavity diameter of the spiral case gradually increases along the flow direction of blood in one of the embodiments, described
The diameter of first separator inner wall gradually increases along the flow direction of blood, and the diameter of the rotor gradually increases along the flow direction of blood
Greatly.The diameter of rotor and the first separator gradually increases along the flow direction of blood, the inside in the outside of rotor and the first separator
Increase with the contact area of blood, larger contact area be provided, the diameter of spiral case from top to bottom gradually increase can reduce it is defeated
Go out the size in channel, reduces the amount that blood enters output channel.
The power plant includes the first magnet and first rotating shaft, the first rotating shaft one in one of the embodiments,
End is fixedly connected with the spiral case, and the other end is connect with the rotor is used to support the rotor, and the first magnet fixation is set
It sets on the rotor, first magnet is used to coordinate with magnetic power machine, the rotor is driven to rotate.First magnet can
It is rotated under the drive of magnetic power machine, the structure of the on-bladed blood pump with buffer layer can be simplified in this manner,
It avoids introducing excessive structure, ensure integrally-built reliable, stable.
The power plant further includes bearing in one of the embodiments, and the rotor is set in the first rotating shaft
On, the bearing is set in the first rotating shaft and is arranged between the first rotating shaft and the rotor.The setting of bearing
Rotation can be made more to stablize.
The power plant further includes water seal in one of the embodiments, the water seal be located at the rotor, first turn
In the space that axis and bearing surround and on the downside of the bearing.The setting of water seal can make bearing, first rotating shaft and blood
Contact area reduces, and reduces erosion of the blood to first rotating shaft and bearing.
The power plant includes the second magnet in one of the embodiments, and second magnet is fixed with rotor to be connected
It connects, second magnet is used to be supported the rotor with magnetic suspended basement cooperation and for driving the rotor to rotate.
Rotor is driven to rotate by maglev mode, the influence smaller in rotary course for blood, while avoiding in rotary course
Friction, increase usage time.
Second magnet is annular magnet in one of the embodiments,.
The inner wall of the spiral case is equipped with corresponding recessed with the both ends of the first separator in one of the embodiments,
Slot.The setting of groove makes separator more stablize.
The power plant includes the second shaft in one of the embodiments, and second shaft is solid with the rotor
It is fixed to connect and extend to outside the spiral case, for being connect with driving device.Rotor rotation, structure letter are driven by the second shaft
It is single, production cost can be reduced.
Description of the drawings
Fig. 1 is 1 sectional view of on-bladed blood pump embodiment with buffer layer described in the embodiment of the present invention；
Fig. 2 is 2 sectional view of on-bladed blood pump embodiment with buffer layer described in the embodiment of the present invention；
Fig. 3 is 3 sectional view of on-bladed blood pump embodiment with buffer layer described in the embodiment of the present invention；
Fig. 4 is 4 sectional view of on-bladed blood pump embodiment with buffer layer described in the embodiment of the present invention.
Specific implementation mode
The present invention will be further described in detail in the following with reference to the drawings and specific embodiments.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly anchored to another
On element or another element can also be fixed on by element placed in the middle.When an element be known as " connection " another
Element, it can be directly to another element or can also be to be connected to another yuan by element placed in the middle
Part.
Embodiment 1
Fig. 1 is please referred to, a kind of on-bladed blood pump with buffer layer, including snail are disclosed in one embodiment of the present of invention
Shell 101, rotor 103, guiding subassembly 104, power plant 105 and the first separator 102, the spiral case 101 are equipped with the first cavity
The first inlet 114, the first liquid outlet 115, buffer inlet 116 and the buffer solution outlet being connected to with first cavity
117, first separator 102 and the rotor 103 are arranged in first cavity, and first separator 102 is set
The second inlet 121 and the second liquid outlet 122 for having the second cavity and being connected to second cavity, first separator
102 are set on the rotor 103, pass through the guiding subassembly 104 between first separator 102 and the rotor 103
It is fixedly connected, forms laminar flow channel 106 between the inner wall and the outer wall of the rotor 103 of first separator 102, described the
Inner wall of the both ends of one separator 102 with the spiral case 101 offsets, and first separator 102 can the spiral case 101 relatively
Rotation, buffer solution accommodating chamber 107, institute are enclosed between the outer wall and the inner wall of the spiral case 101 of first separator 102
It states buffer solution accommodating chamber 107 to be connected to the buffer inlet 116 and buffer solution outlet 117, first inlet
114, second inlet 121, the laminar flow channel 106, second liquid outlet 122 and first liquid outlet 115 according to
Secondary connection, the power plant 105 is for driving the rotor 103 to rotate.
The above-mentioned on-bladed blood pump with buffer layer, when work, power plant 105 drives rotor 103 to rotate, and blood enters
It will enter in laminar flow channel 106 after spiral case 101, the blood into laminar flow channel 106 will be in rotor 103 and the first separator
Laminar flow is carried out under 102 drive, while the blood in laminar flow channel 106 will generate certain potential energy, this part blood will be by layer
The outlet of circulation road 106 is discharged, and final whole blood is exported by the first liquid outlet 115, carries out the supply of blood, in conveying blood
During can inject buffer solution in buffer inlet 116, the buffer solution of injection certain pressure in the buffer solution accommodating chamber 107
Blood can be reduced to enter in buffer solution accommodating chamber 107, most blood will be located in laminar flow channel 106, conveying power foot,
The extruding to blood is reduced, while the pressure of buffer solution can be increased if necessary, buffer solution is made to enter in blood；By such
The confession that mode carries out blood should be able to make the blood flow of needs supply be in laminar condition, and blood is not susceptible to haemolysis and thrombus
Phenomenon, while the mode of laminar flow will not squeeze blood, the setting of buffer solution accommodating chamber 107 can make blood be in laminar flow
In channel 106, the destruction to blood is avoided, while buffer solution can be injected as needed, it is smaller to blood injury, it can carry out
Prolonged blood supply disclosure satisfy that the requirement for supplying blood for a long time, ensure the quality of blood.
Please refer to Fig. 1, optionally, spiral case 101 include feed liquor portion 111, side plate 112 and bottom plate 113, the feed liquor portion 111,
The side plate 112 and the bottom plate 113 are fixedly connected sequentially to form first cavity, and the feed liquor portion 111 is equipped with described the
The diameter of one inlet 114, the feed liquor portion 111 gradually increases along the flow direction of blood, and the side plate 112 is equipped with described first
Liquid outlet 115, the rotor 103 include promotion part 131 and support portion 132, and the promotion part 131 is solid with the support portion 132
Fixed connection, the diameter of the promotion part 131 gradually increase along the flow direction of blood, the support portion 132 and the side plate 112 it
Between form tangential chambers 108, first separator 102 is set on the promotion part 131, first separator 102 and institute
It states and is fixedly connected by the guiding subassembly 104 between promotion part 131, first separator 102 is located at the promotion part 131
Between the feed liquor portion 111.111 diameter of feed liquor portion from top to bottom gradually increases the ruler that can reduce buffer solution accommodating chamber 107
Very little, 131 diameter of promotion part from top to bottom gradually increases the laminar flow channel 106 that can make up arc, passes through the cooperation of such structure
Blood and promotion part 131 and the contact area of the first separator 102, blood can be increased to be made by the propulsive force of bigger defeated
The blood gone out is more stablized, and output effect is more preferable.
Fig. 1 is please referred to, optionally, guiding subassembly 104 includes several conducting elements circumferentially.
Fig. 1 is please referred to, optionally, the first cavity diameter of spiral case 101 gradually increases along the flow direction of blood, and described first
The diameter of 102 inner wall of separator gradually increases along the flow direction of blood, and the diameter of the rotor 103 is gradual along the flow direction of blood
Increase.The diameter of rotor 103 and the first separator 102 gradually increases along the flow direction of blood, the outside of rotor 103 with first point
The contact area of the inside of spacing body 102 and blood increases, and provides larger contact area, the diameter of spiral case 101 from top to bottom by
The cumulative size that can reduce output channel greatly reduces the amount that blood enters output channel.
Fig. 1 is please referred to, optionally, power plant 105 includes the first magnet 151 and first rotating shaft 152, the first rotating shaft
152 one end are fixedly connected with the spiral case 101, and the other end is connect with the rotor 103 is used to support the rotor 103, described
First magnet 151 is fixed on the rotor 103, first magnet 151 be used for magnetic power machine 105 cooperation,
The rotor 103 is driven to rotate.First magnet 151 can rotate under the drive of magnetic power machine 105, in this manner can
Enough structures for simplifying the on-bladed blood pump with buffer layer avoid introducing excessive structure, and guarantee is integrally-built reliably, stablizes.
Fig. 1 is please referred to, optionally, power plant 105 further includes bearing 153, and the rotor 103 is set in described first turn
On axis 152, the bearing 153 is set in the first rotating shaft 152 and is arranged in the first rotating shaft 152 and the rotor
Between 103.The setting of bearing 153 can be such that rotation more stablizes.
Please refer to Fig. 1, optionally, power plant 105 further includes water seal 154, the water seal 154 be located at the rotor 103,
In the space that first rotating shaft 152 and bearing 153 surround and positioned at 153 downside of the bearing.The setting of water seal 154 can make bearing
153, first rotating shaft 152 and the contact area of blood reduce, and reduce erosion of the blood to first rotating shaft 152 and bearing 153.
Fig. 1 is please referred to, optionally, the inner wall of spiral case 101 is equipped with corresponding recessed with the both ends of first separator 102
Slot.The setting of groove makes separator more stablize.
Embodiment 2
Fig. 2 is please referred to, a kind of on-bladed blood pump with buffer layer, including snail are disclosed in one embodiment of the present of invention
Shell 201, rotor 203, guiding subassembly 204, power plant 205 and the first separator 202, the spiral case 201 are equipped with the first cavity
The first inlet 214, the first liquid outlet 215, buffer inlet 216 and the buffer solution outlet being connected to with first cavity
217, first separator 202 and the rotor 203 are arranged in first cavity, and first separator 202 is set
The second inlet 221 and the second liquid outlet 222 for having the second cavity and being connected to second cavity, first separator
202 are set on the rotor 203, pass through the guiding subassembly 204 between first separator 202 and the rotor 203
It is fixedly connected, forms laminar flow channel 206 between the inner wall and the outer wall of the rotor 203 of first separator 202, described the
Inner wall of the both ends of one separator 202 with the spiral case 201 offsets, and first separator 202 can the spiral case 201 relatively
Rotation, buffer solution accommodating chamber 207, institute are enclosed between the outer wall and the inner wall of the spiral case 201 of first separator 202
It states buffer solution accommodating chamber 207 to be connected to the buffer inlet 216 and buffer solution outlet 217, first inlet
214, second inlet 221, the laminar flow channel 206, second liquid outlet 222 and first liquid outlet 215 according to
Secondary connection, the power plant 205 is for driving the rotor 203 to rotate.
The above-mentioned on-bladed blood pump with buffer layer, when work, power plant 205 drives rotor 203 to rotate, and blood enters
It will enter in laminar flow channel 206 after spiral case 201, the blood into laminar flow channel 206 will be in rotor 203 and the first separator
Laminar flow is carried out under 202 drive, while the blood in laminar flow channel 206 will generate certain potential energy, this part blood will be by layer
The outlet of circulation road 206 is discharged, and final whole blood is exported by the first liquid outlet 215, carries out the supply of blood, in conveying blood
During can inject buffer solution in buffer inlet 216, the buffer solution of injection certain pressure in the buffer solution accommodating chamber 207
Blood can be reduced to enter in buffer solution accommodating chamber 207, most blood will be located in laminar flow channel 206, conveying power foot,
The extruding to blood is reduced, while the pressure of buffer solution can be increased if necessary, buffer solution is made to enter in blood；By such
The confession that mode carries out blood should be able to make the blood flow of needs supply be in laminar condition, and blood is not susceptible to haemolysis and thrombus
Phenomenon, while the mode of laminar flow will not squeeze blood, the setting of buffer solution accommodating chamber 207 can make blood be in laminar flow
In channel 206, the destruction to blood is avoided, while buffer solution can be injected as needed, it is smaller to blood injury, it can carry out
Prolonged blood supply disclosure satisfy that the requirement for supplying blood for a long time, ensure the quality of blood.
Please refer to Fig. 2, optionally, spiral case 201 include feed liquor portion 211, side plate 212 and bottom plate 213, the feed liquor portion 211,
The side plate 212 and the bottom plate 213 are fixedly connected sequentially to form first cavity, and the feed liquor portion 211 is equipped with described the
The diameter of one inlet 214, the feed liquor portion 211 gradually increases along the flow direction of blood, and the side plate 212 is equipped with described first
Liquid outlet 215, the rotor 203 include promotion part 231 and support portion 232, and the promotion part 231 is solid with the support portion 232
Fixed connection, the diameter of the promotion part 231 gradually increase along the flow direction of blood, the support portion 232 and the side plate 212 it
Between form tangential chambers 208, first separator 202 is set on the promotion part 231, first separator 202 and institute
It states and is fixedly connected by the guiding subassembly 204 between promotion part 231, first separator 202 is located at the promotion part 231
Between the feed liquor portion 211.211 diameter of feed liquor portion from top to bottom gradually increases the ruler that can reduce buffer solution accommodating chamber 207
Very little, 231 diameter of promotion part from top to bottom gradually increases the laminar flow channel 206 that can make up arc, passes through the cooperation of such structure
Blood and promotion part 231 and the contact area of the first separator 202, blood can be increased to be made by the propulsive force of bigger defeated
The blood gone out is more stablized, and output effect is more preferable.
Fig. 2 is please referred to, optionally, guiding subassembly 204 includes several conducting elements circumferentially.
Fig. 2 is please referred to, further includes the second separator 209 optionally, second separator 209 is located at described first point
Between spacing body 202 and the rotor 203, the guiding subassembly 204 is two groups, and guiding subassembly 204 described in one of which is for solid
Surely second separator 209 and the rotor 203 are connected, guiding subassembly 204 described in another group is for being fixedly connected with described the
One separator 202 and second separator 209.Increase by the second separator 209, the contact area with blood can be increased, added
Big laminar flow power, conveying effect are more preferable.
Fig. 2 is please referred to, optionally, the first cavity diameter of spiral case 201 gradually increases along the flow direction of blood, and described first
The diameter of 202 inner wall of separator gradually increases along the flow direction of blood, and the diameter of the rotor 203 is gradual along the flow direction of blood
Increase.The diameter of rotor 203 and the first separator 202 gradually increases along the flow direction of blood, the outside of rotor 203 with first point
The contact area of the inside of spacing body 202 and blood increases, and provides larger contact area, the diameter of spiral case 201 from top to bottom by
The cumulative size that can reduce output channel greatly reduces the amount that blood enters output channel.
Fig. 2 is please referred to, optionally, power plant 205 includes the first magnet 251 and first rotating shaft 252, the first rotating shaft
252 one end are fixedly connected with the spiral case 201, and the other end is connect with the rotor 203 is used to support the rotor 203, described
First magnet 251 is fixed on the rotor 203, first magnet 251 be used for magnetic power machine 205 cooperation,
The rotor 203 is driven to rotate.First magnet 251 can rotate under the drive of magnetic power machine 205, in this manner can
Enough structures for simplifying the on-bladed blood pump with buffer layer avoid introducing excessive structure, and guarantee is integrally-built reliably, stablizes.
Fig. 2 is please referred to, optionally, power plant 205 further includes bearing 253, and the rotor 203 is set in described first turn
On axis 252, the bearing 253 is set in the first rotating shaft 252 and is arranged in the first rotating shaft 252 and the rotor
Between 203.The setting of bearing 253 can be such that rotation more stablizes.
Please refer to Fig. 2, optionally, power plant 205 further includes water seal 254, the water seal 254 be located at the rotor 203,
In the space that first rotating shaft 252 and bearing 253 surround and positioned at 253 downside of the bearing.The setting of water seal 254 can make bearing
253, first rotating shaft 252 and the contact area of blood reduce, and reduce erosion of the blood to first rotating shaft 252 and bearing 253.
Fig. 2 is please referred to, optionally, the inner wall of spiral case 201 is equipped with corresponding recessed with the both ends of first separator 202
Slot.The setting of groove makes separator more stablize.
Embodiment 3
Fig. 3 is please referred to, a kind of on-bladed blood pump with buffer layer, including snail are disclosed in one embodiment of the present of invention
Shell 301, rotor 303, guiding subassembly 304, power plant 305 and the first separator 302, the spiral case 301 are equipped with the first cavity
The first inlet 314, the first liquid outlet 315, buffer inlet 316 and the buffer solution outlet being connected to with first cavity
317, first separator 302 and the rotor 303 are arranged in first cavity, and first separator 302 is set
The second inlet 321 and the second liquid outlet 322 for having the second cavity and being connected to second cavity, first separator
302 are set on the rotor 303, pass through the guiding subassembly 304 between first separator 302 and the rotor 303
It is fixedly connected, forms laminar flow channel 306 between the inner wall and the outer wall of the rotor 303 of first separator 302, described the
Inner wall of the both ends of one separator 302 with the spiral case 301 offsets, and first separator 302 can the spiral case 301 relatively
Rotation, buffer solution accommodating chamber 307, institute are enclosed between the outer wall and the inner wall of the spiral case 301 of first separator 302
It states buffer solution accommodating chamber 307 to be connected to the buffer inlet 316 and buffer solution outlet 317, first inlet
314, second inlet 321, the laminar flow channel 306, second liquid outlet 322 and first liquid outlet 315 according to
Secondary connection, the power plant 305 is for driving the rotor 303 to rotate.
The above-mentioned on-bladed blood pump with buffer layer, when work, power plant 305 drives rotor 303 to rotate, and blood enters
It will enter in laminar flow channel 306 after spiral case 301, the blood into laminar flow channel 306 will be in rotor 303 and the first separator
Laminar flow is carried out under 302 drive, while the blood in laminar flow channel 306 will generate certain potential energy, this part blood will be by layer
The outlet of circulation road 306 is discharged, and final whole blood is exported by the first liquid outlet 315, carries out the supply of blood, in conveying blood
During can inject buffer solution in buffer inlet 316, the buffer solution of injection certain pressure in the buffer solution accommodating chamber 307
Blood can be reduced to enter in buffer solution accommodating chamber 307, most blood will be located in laminar flow channel 306, conveying power foot,
The extruding to blood is reduced, while the pressure of buffer solution can be increased if necessary, buffer solution is made to enter in blood；By such
The confession that mode carries out blood should be able to make the blood flow of needs supply be in laminar condition, and blood is not susceptible to haemolysis and thrombus
Phenomenon, while the mode of laminar flow will not squeeze blood, the setting of buffer solution accommodating chamber 307 can make blood be in laminar flow
In channel 306, the destruction to blood is avoided, while buffer solution can be injected as needed, it is smaller to blood injury, it can carry out
Prolonged blood supply disclosure satisfy that the requirement for supplying blood for a long time, ensure the quality of blood.
Please refer to Fig. 3, optionally, spiral case 301 include feed liquor portion 311, side plate 312 and bottom plate 313, the feed liquor portion 311,
The side plate 312 and the bottom plate 313 are fixedly connected sequentially to form first cavity, and the feed liquor portion 311 is equipped with described the
The diameter of one inlet 314, the feed liquor portion 311 gradually increases along the flow direction of blood, and the side plate 312 is equipped with described first
Liquid outlet 315, the rotor 303 include promotion part 331 and support portion 332, and the promotion part 331 is solid with the support portion 332
Fixed connection, the diameter of the promotion part 331 gradually increase along the flow direction of blood, the support portion 332 and the side plate 312 it
Between form tangential chambers 308, first separator 302 is set on the promotion part 331, first separator 302 and institute
It states and is fixedly connected by the guiding subassembly 304 between promotion part 331, first separator 302 is located at the promotion part 331
Between the feed liquor portion 311.311 diameter of feed liquor portion from top to bottom gradually increases the ruler that can reduce buffer solution accommodating chamber 307
Very little, 331 diameter of promotion part from top to bottom gradually increases the laminar flow channel 306 that can make up arc, passes through the cooperation of such structure
Blood and promotion part 331 and the contact area of the first separator 302, blood can be increased to be made by the propulsive force of bigger defeated
The blood gone out is more stablized, and output effect is more preferable.
Fig. 3 is please referred to, optionally, guiding subassembly 304 includes several conducting elements circumferentially.
Fig. 3 is please referred to, further includes the second separator 309 optionally, second separator 309 is located at described first point
Between spacing body 302 and the rotor 303, the guiding subassembly 304 is two groups, and guiding subassembly 304 described in one of which is for solid
Surely second separator 309 and the rotor 303 are connected, guiding subassembly 304 described in another group is for being fixedly connected with described the
One separator 302 and second separator 309.Increase by the second separator 309, the contact area with blood can be increased, added
Big laminar flow power, conveying effect are more preferable.
Fig. 3 is please referred to, optionally, the first cavity diameter of spiral case 301 gradually increases along the flow direction of blood, and described first
The diameter of 302 inner wall of separator gradually increases along the flow direction of blood, and the diameter of the rotor 303 is gradual along the flow direction of blood
Increase.The diameter of rotor 303 and the first separator 302 gradually increases along the flow direction of blood, the outside of rotor 303 with first point
The contact area of the inside of spacing body 302 and blood increases, and provides larger contact area, the diameter of spiral case 301 from top to bottom by
The cumulative size that can reduce output channel greatly reduces the amount that blood enters output channel.
Fig. 3 is please referred to, optionally, power plant 305 includes the second magnet 351, second magnet 351 and rotor 303
It is fixedly connected, second magnet 351 is used to be supported the rotor 303 with magnetic suspended basement cooperation and for driving institute
State the rotation of rotor 303.Rotor 303 is driven to rotate by maglev mode, the influence smaller in rotary course for blood, together
When avoid friction in rotary course, increase usage time.
Fig. 3 is please referred to, optionally, the second magnet 351 is annular magnet.
Fig. 3 is please referred to, optionally, the inner wall of spiral case 301 is equipped with corresponding recessed with the both ends of first separator 302
Slot.The setting of groove makes separator more stablize.
Embodiment 4
Fig. 4 is please referred to, a kind of on-bladed blood pump with buffer layer, including snail are disclosed in one embodiment of the present of invention
Shell 401, rotor 403, guiding subassembly 404, power plant 405 and the first separator 402, the spiral case 401 are equipped with the first cavity
The first inlet 414, the first liquid outlet 415, buffer inlet 416 and the buffer solution outlet being connected to with first cavity
417, first separator 402 and the rotor 403 are arranged in first cavity, and first separator 402 is set
The second inlet 421 and the second liquid outlet 422 for having the second cavity and being connected to second cavity, first separator
402 are set on the rotor 403, pass through the guiding subassembly 404 between first separator 402 and the rotor 403
It is fixedly connected, forms laminar flow channel 406 between the inner wall and the outer wall of the rotor 403 of first separator 402, described the
Inner wall of the both ends of one separator 402 with the spiral case 401 offsets, and first separator 402 can the spiral case 401 relatively
Rotation, buffer solution accommodating chamber 407, institute are enclosed between the outer wall and the inner wall of the spiral case 401 of first separator 402
It states buffer solution accommodating chamber 407 to be connected to the buffer inlet 416 and buffer solution outlet 417, first inlet
414, second inlet 421, the laminar flow channel 406, second liquid outlet 422 and first liquid outlet 415 according to
Secondary connection, the power plant 405 is for driving the rotor 403 to rotate.
The above-mentioned on-bladed blood pump with buffer layer, when work, power plant 405 drives rotor 403 to rotate, and blood enters
It will enter in laminar flow channel 406 after spiral case 401, the blood into laminar flow channel 406 will be in rotor 403 and the first separator
Laminar flow is carried out under 402 drive, while the blood in laminar flow channel 406 will generate certain potential energy, this part blood will be by layer
The outlet of circulation road 406 is discharged, and final whole blood is exported by the first liquid outlet 415, carries out the supply of blood, in conveying blood
During can inject buffer solution in buffer inlet 416, the buffer solution of injection certain pressure in the buffer solution accommodating chamber 407
Blood can be reduced to enter in buffer solution accommodating chamber 407, most blood will be located in laminar flow channel 406, conveying power foot,
The extruding to blood is reduced, while the pressure of buffer solution can be increased if necessary, buffer solution is made to enter in blood；By such
The confession that mode carries out blood should be able to make the blood flow of needs supply be in laminar condition, and blood is not susceptible to haemolysis and thrombus
Phenomenon, while the mode of laminar flow will not squeeze blood, the setting of buffer solution accommodating chamber 407 can make blood be in laminar flow
In channel 406, the destruction to blood is avoided, while buffer solution can be injected as needed, it is smaller to blood injury, it can carry out
Prolonged blood supply disclosure satisfy that the requirement for supplying blood for a long time, ensure the quality of blood.
Please refer to Fig. 4, optionally, spiral case 401 include feed liquor portion 411, side plate 412 and bottom plate 413, the feed liquor portion 411,
The side plate 412 and the bottom plate 413 are fixedly connected sequentially to form first cavity, and the feed liquor portion 411 is equipped with described the
The diameter of one inlet 414, the feed liquor portion 411 gradually increases along the flow direction of blood, and the side plate 412 is equipped with described first
Liquid outlet 415, the rotor 403 include promotion part 431 and support portion 432, and the promotion part 431 is solid with the support portion 432
Fixed connection, the diameter of the promotion part 431 gradually increase along the flow direction of blood, the support portion 432 and the side plate 412 it
Between form tangential chambers 408, first separator 402 is set on the promotion part 431, first separator 402 and institute
It states and is fixedly connected by the guiding subassembly 404 between promotion part 431, first separator 402 is located at the promotion part 431
Between the feed liquor portion 411.411 diameter of feed liquor portion from top to bottom gradually increases the ruler that can reduce buffer solution accommodating chamber 407
Very little, 431 diameter of promotion part from top to bottom gradually increases the laminar flow channel 406 that can make up arc, passes through the cooperation of such structure
Blood and promotion part 431 and the contact area of the first separator 402, blood can be increased to be made by the propulsive force of bigger defeated
The blood gone out is more stablized, and output effect is more preferable.
Fig. 4 is please referred to, optionally, guiding subassembly 404 includes several conducting elements circumferentially.
Fig. 4 is please referred to, further includes the second separator 409 optionally, second separator 409 is located at described first point
Between spacing body 402 and the rotor 403, the guiding subassembly 404 is two groups, and guiding subassembly 404 described in one of which is for solid
Surely second separator 409 and the rotor 403 are connected, guiding subassembly 404 described in another group is for being fixedly connected with described the
One separator 402 and second separator 409.Increase by the second separator 409, the contact area with blood can be increased, added
Big laminar flow power, conveying effect are more preferable.
Fig. 4 is please referred to, optionally, the first cavity diameter of spiral case 401 gradually increases along the flow direction of blood, and described first
The diameter of 402 inner wall of separator gradually increases along the flow direction of blood, and the diameter of the rotor 403 is gradual along the flow direction of blood
Increase.The diameter of rotor 403 and the first separator 402 gradually increases along the flow direction of blood, the outside of rotor 403 with first point
The contact area of the inside of spacing body 402 and blood increases, and provides larger contact area, the diameter of spiral case 401 from top to bottom by
The cumulative size that can reduce output channel greatly reduces the amount that blood enters output channel.
Fig. 4 is please referred to, optionally, the inner wall of spiral case 401 is equipped with corresponding recessed with the both ends of first separator 402
Slot.The setting of groove makes separator more stablize.
Fig. 4 is please referred to, optionally, power plant 405 includes the second shaft 451, second shaft 451 and the rotor
403 are fixedly connected and extend to outside the spiral case 401, for being connect with driving device.Rotor is driven by the second shaft 451
403 rotations, it is simple in structure, production cost can be reduced.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of on-bladed blood pump with buffer layer, including spiral case, rotor, guiding subassembly, power plant and the first separator,
The first inlet and the first liquid outlet that the spiral case is equipped with the first cavity and is connected to first cavity, described first separates
Part and the rotor are arranged in first cavity, first separator be equipped with the second cavity and with second cavity
The second inlet and the second liquid outlet of connection, first separator is set on the rotor, first separator with
It is fixedly connected by the guiding subassembly between the rotor, the power plant is for driving the rotor to rotate, feature
It is, the spiral case is additionally provided with the buffer inlet being connected to first cavity and buffer solution outlet, first separator
Inner wall and the outer wall of the rotor between form laminar flow channel, the inner wall of the both ends of first separator with the spiral case
It offsets, first separator can be rotated relative to the spiral case, and the inner wall of the outer wall and the spiral case of first separator encloses
Conjunction forms buffer solution accommodating chamber, the buffer solution accommodating chamber and the buffer inlet and the buffer solution outlet, described
First inlet, second inlet, the laminar flow channel, second liquid outlet and first liquid outlet connect successively
It is logical.
2. the on-bladed blood pump according to claim 1 with buffer layer, which is characterized in that the spiral case includes feed liquor
Portion, side plate and bottom plate, the feed liquor portion, the side plate and the bottom plate are fixedly connected sequentially to form first cavity, described
Feed liquor portion is equipped with first inlet, and the diameter of the feed liquor portion gradually increases along the flow direction of blood, and the side plate is equipped with
First liquid outlet, the rotor include promotion part and support portion, and the promotion part is fixedly connected with the support portion, described
The diameter of promotion part gradually increases along the flow direction of blood, forms tangential chambers between the support portion and the side plate, and described
One separator is set on the promotion part, is fixed by the guiding subassembly between first separator and the promotion part
Connection, first separator is between the promotion part and the feed liquor portion.
3. the on-bladed blood pump according to claim 1 with buffer layer, which is characterized in that further include the second separator,
Second separator is between first separator and the rotor, and the guiding subassembly is two groups, one of which institute
Guiding subassembly is stated for being fixedly connected with second separator and the rotor, guiding subassembly described in another group is for being fixedly connected
First separator and second separator.
4. the on-bladed blood pump according to claim 1 with buffer layer, which is characterized in that the first cavity of the spiral case
Diameter gradually increases along the flow direction of blood, and the diameter of the first separator inner wall gradually increases along the flow direction of blood, institute
The diameter for stating rotor gradually increases along the flow direction of blood.
5. the on-bladed blood pump according to claim 1 with buffer layer, which is characterized in that the power plant includes the
One magnet and first rotating shaft, described first rotating shaft one end are fixedly connected with the spiral case, and the other end connect with the rotor and is used for
The rotor, first magnet is supported to be fixed on the rotor, first magnet is used for and magnetic power machine
Coordinate, the rotor is driven to rotate.
6. the on-bladed blood pump according to claim 5 with buffer layer, which is characterized in that the power plant further includes
Bearing, the rotor are set in the first rotating shaft, and the bearing is set in the first rotating shaft and is arranged described
Between one shaft and the rotor.
7. the on-bladed blood pump according to claim 6 with buffer layer, which is characterized in that the power plant further includes
Water seal, the water seal are located in the space that the rotor, first rotating shaft and bearing surround and on the downside of the bearings.
8. the on-bladed blood pump according to claim 1 with buffer layer, which is characterized in that the power plant includes the
Two magnet, second magnet are fixedly connected with the rotor, and second magnet is used to coordinate to the rotor with magnetic suspended basement
It is supported and for driving the rotor to rotate.
9. the on-bladed blood pump according to claim 1 with buffer layer, which is characterized in that set on the inner wall of the spiral case
There is groove corresponding with the both ends of the first separator.
10. the on-bladed blood pump according to claim 1 with buffer layer, which is characterized in that the power plant includes
Second shaft, second shaft are fixedly connected with the rotor and extend to outside the spiral case, for being connect with driving device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710466104.5A CN107126588B (en) | 2017-06-19 | 2017-06-19 | On-bladed blood pump with buffer layer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710466104.5A CN107126588B (en) | 2017-06-19 | 2017-06-19 | On-bladed blood pump with buffer layer |
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| Publication Number | Publication Date |
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| CN107126588A CN107126588A (en) | 2017-09-05 |
| CN107126588B true CN107126588B (en) | 2018-09-14 |
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| CN201710466104.5A Active CN107126588B (en) | 2017-06-19 | 2017-06-19 | On-bladed blood pump with buffer layer |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4233989A3 (en) | 2017-06-07 | 2023-10-11 | Shifamed Holdings, LLC | Intravascular fluid movement devices, systems, and methods of use |
| WO2019094963A1 (en) | 2017-11-13 | 2019-05-16 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| CN117959583A (en) | 2018-02-01 | 2024-05-03 | 施菲姆德控股有限责任公司 | Intravascular blood pump and methods of use and manufacture |
| JP2022540616A (en) | 2019-07-12 | 2022-09-16 | シファメド・ホールディングス・エルエルシー | Intravascular blood pump and methods of manufacture and use |
| WO2021016372A1 (en) | 2019-07-22 | 2021-01-28 | Shifamed Holdings, Llc | Intravascular blood pumps with struts and methods of use and manufacture |
| US11724089B2 (en) | 2019-09-25 | 2023-08-15 | Shifamed Holdings, Llc | Intravascular blood pump systems and methods of use and control thereof |
| CN111878410B (en) * | 2020-08-26 | 2024-05-17 | 广东顺德工业设计研究院(广东顺德创新设计研究院) | Isolated organ mechanical perfusion device and blood pump thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1383811A (en) * | 1972-01-03 | 1974-02-12 | Bio Medicus Inc | Impeller pumps for pumping blood or similarly delicate fluids |
| JPH01198556A (en) * | 1988-02-02 | 1989-08-10 | Mitsubishi Electric Corp | Blood pump |
| US4984972A (en) * | 1989-10-24 | 1991-01-15 | Minnesota Mining And Manufacturing Co. | Centrifugal blood pump |
| JPH07136247A (en) * | 1993-11-16 | 1995-05-30 | Toyobo Co Ltd | Centrifugal pump for blood |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2284396B1 (en) * | 2006-04-20 | 2008-10-16 | Salvador Merce Vives | PUMP FOR BLOOD PERFUSION. |
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- 2017-06-19 CN CN201710466104.5A patent/CN107126588B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1383811A (en) * | 1972-01-03 | 1974-02-12 | Bio Medicus Inc | Impeller pumps for pumping blood or similarly delicate fluids |
| JPH01198556A (en) * | 1988-02-02 | 1989-08-10 | Mitsubishi Electric Corp | Blood pump |
| US4984972A (en) * | 1989-10-24 | 1991-01-15 | Minnesota Mining And Manufacturing Co. | Centrifugal blood pump |
| JPH07136247A (en) * | 1993-11-16 | 1995-05-30 | Toyobo Co Ltd | Centrifugal pump for blood |
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Inventor after: Lin Chao Inventor after: Huo Feng Inventor after: Liang Mingju Inventor after: Tan Xiaoyu Inventor after: Ren Xiaolong Inventor after: Lin Yanzhi Inventor after: Zhou Weijin Inventor after: Li Jiayu Inventor before: Lin Chao Inventor before: Lin Yanzhi |
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Effective date of registration: 20200806 Address after: 528300 Room 801, 8th Floor, Research Institute Building, Phase II, Sanle Road North 1, Residential Committee, Beijiao Town, Shunde District, Foshan City, Guangdong Province Patentee after: GUANGDONG DINGWOSHENG MEDICAL INSTRUMENT Co.,Ltd. Address before: Beijiao Town, Shunde District of Guangdong city of Foshan province Sanle 528300 northbound, Guangdong Industrial Design City Plaza two B2 District three floor Patentee before: GUANGDONG SHUNDE INDUSTRIAL DESIGN INSTITUTE (GUANGDONG SHUNDE INNOVATIVE DESIGN INSTITUTE) |