CN115837102A - Medical blood pumping device - Google Patents
Medical blood pumping device Download PDFInfo
- Publication number
- CN115837102A CN115837102A CN202211476558.8A CN202211476558A CN115837102A CN 115837102 A CN115837102 A CN 115837102A CN 202211476558 A CN202211476558 A CN 202211476558A CN 115837102 A CN115837102 A CN 115837102A
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- Prior art keywords
- wall
- bevel gear
- hollow
- shell
- casing
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- 238000005086 pumping Methods 0.000 title claims abstract description 49
- 210000004369 blood Anatomy 0.000 title claims abstract description 44
- 239000008280 blood Substances 0.000 title claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims description 21
- 230000000694 effects Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000004087 circulation Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 210000001772 blood platelet Anatomy 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000013130 cardiovascular surgery Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000003743 erythrocyte Anatomy 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The invention discloses a medical blood pumping device which comprises a pumping shell, wherein one end of the pumping shell is provided with a liquid outlet end, the top of the pumping shell is fixedly provided with a motor through welding, the output end of the motor is movably connected with a rotating shaft through a coupler, the rotating shaft movably penetrates through the outer wall of the pumping shell, one end of the rotating shaft is provided with a bevel gear transmission pair, the outer wall of the bevel gear transmission pair is fixedly provided with a fixed rod through welding, the fixed rod is fixedly welded with the inner wall of the pumping shell, one end of the bevel gear transmission pair is provided with a connecting rod, the outer wall of the connecting rod is fixedly provided with a reverse stirring sheet through welding, one end of the connecting rod is connected with a reverse mechanism, one end of the reverse mechanism is connected with a hollow shaft, the outer wall of the hollow shaft is provided with pump liquid blades, and the hollow shaft and the connecting rod are respectively and movably inserted into the upper inner wall and the lower inner wall of a square shell.
Description
Technical Field
The invention relates to the technical field of medical treatment, in particular to a medical blood pumping device.
Background
In a cardiovascular surgery operating room, blood transfusion is performed on blood vessels of a patient by using a blood pump, and because of the characteristics of smoothness in operation and low noise of a vane pump, the blood is pumped by the vane pump.
In the prior art, for example, in the blood pump of application No. 201811177548, when in use, blood forms a small vortex effect at a liquid outlet end, tiny substances such as red blood cells and blood platelets in the blood are thrown away outwards due to a centrifugal effect, and since the tube wall of the blood in the process from a pump body to the liquid outlet end is over-contracted, the tiny substances carried by the blood rotating at high speed have a greater probability of colliding with the tube wall, and with the increase of circulation times, the phenomenon of cell rupture in the blood can be caused, which affects the blood quality of a patient. Therefore, it is desirable to design a medical blood pumping device that avoids the occurrence of swirling during the evacuation process.
Disclosure of Invention
Technical problem to be solved
In view of the defects of the prior art, an object of the present invention is to provide a medical blood pumping device, so as to solve the problems in the background art mentioned above that, due to excessive contraction of the tube wall during the process from the pump body to the liquid outlet end, the blood rotating at high speed carries micro-substances and has a greater probability of colliding with the tube wall, and as the number of circulation times increases, the rupture of partial cells in the blood occurs.
(II) technical scheme
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a blood pumping device for medical treatment, includes the pumping casing, the one end of pumping casing is provided with out the liquid end, the top of pumping casing has the motor through welded fastening, the output of motor has the pivot through shaft coupling swing joint, the outer wall of pumping casing is run through in the pivot activity, the one end of pivot is provided with bevel gear transmission pair, bevel gear transmission pair's outer wall has the dead lever through welded fastening, the dead lever passes through welded fastening with the inner wall of pumping casing, the connecting rod is installed to bevel gear transmission pair's one end, the outer wall of connecting rod has reverse stirring piece through welded fastening, the one end of connecting rod is connected with the reversal mechanism, the one end of reversal mechanism is connected with the quill shaft, the outer wall of quill shaft is provided with pump liquid blade.
According to the technical scheme, the reversing mechanism comprises a square shell, the hollow shaft and the connecting rod are movably inserted into the upper inner wall and the lower inner wall of the square shell respectively, one end of the connecting rod is sleeved with a first bevel gear, the bottom of the hollow shaft is sleeved with a third bevel gear, a second bevel gear is movably mounted on the inner wall of one side of the square shell through a bearing, the first bevel gear is meshed with the second bevel gear, and the second bevel gear is meshed with the third bevel gear.
According to the technical scheme, the outer wall of the hollow shaft is fixedly provided with the hollow casing through welding, the interior of the hollow casing is communicated with the outer wall of the hollow shaft, the liquid pumping blades are fixedly arranged on the outer wall of the hollow casing through welding, the inner walls of the liquid pumping blades are integrally provided with the heating protrusions, and the heating protrusions are communicated with the hollow casing.
According to the technical scheme, the inner wall of the pump liquid blade is correspondingly provided with the extension flow channel, the extension flow channel is internally provided with the one-way valve, the conduction directions of the two one-way valves are opposite, the two extension flow channels are communicated with the inner wall of the heating boss, one of the two extension flow channels is communicated with the hollow shaft, and the other one of the extension flow channels is communicated with the hollow casing.
According to the technical scheme, the outer wall of the hollow shaft is rotatably sleeved with the fixed casing, one side of the fixed casing is fixedly provided with the extension branch pipe through welding, the extension branch pipe penetrates through the outer wall of the pumping shell, and the fixed casing and the hollow casing are aligned with each other.
According to the technical scheme, the outer wall of the hollow shaft is rotated and sleeved with the sealing sleeve, the sealing sleeve is attached to and arranged between the fixed sleeve shell and the hollow sleeve shell, and the fixed sleeve shell and the hollow sleeve shell are communicated with the sealing sleeve.
According to the technical scheme, one end of the extension branch pipe is in through connection with the heat exchanger, and one end of the heat exchanger is in through connection with one end of the hollow shaft.
According to the technical scheme, the reverse stirring sheet is uniformly provided with the hollow grooves which are of long strip-shaped structures.
(III) advantageous effects
Compared with the prior art, the invention has the following beneficial effects: according to the invention, the torque is reversed through the reversing mechanism, so that the rotation directions of the pump fluid blade and the reverse stirring sheet are opposite, and at the moment, the vortex is reversed or even disappears through the reverse stirring of the reverse stirring sheet by utilizing the friction force, so that tiny substances in blood are prevented from rotating at a high speed and impacting on the contraction section of the tube wall when the tiny substances are contracted through the liquid outlet end after leaving the pump fluid blade, the vortex is prevented from being generated, and the activity of the blood is more durable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal construction of the pumping housing of the present invention;
FIG. 3 is a schematic flow of the heating medium of the present invention;
FIG. 4 is a schematic view of the attachment structure of the connecting rod of the present invention;
FIG. 5 is a schematic view of the internal structure of the square housing of the present invention;
in the figure: 1. a pumping housing; 11. a liquid outlet end; 2. a heat exchanger; 3. fixing the casing; 31. an extension branch pipe; 32. sealing sleeves; 4. a hollow shaft; 5. a hollow casing; 51. a liquid pumping vane; 52. an extension flow passage; 521. a one-way valve; 53. heating the boss; 6. a square housing; 7. a reverse agitation blade; 71. a hollow groove; 8. a connecting rod; 9. a bevel gear transmission pair; 91. a rotating shaft; 92. a motor; 93. fixing the rod; 61. a first bevel gear; 62. a second bevel gear; 63. and a third bevel gear.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides the following technical solutions: a medical blood pumping device comprises a pumping shell 1, one end of the pumping shell 1 is provided with a liquid outlet end 11, the top of the pumping shell 1 is fixedly provided with a motor 92 through welding, the output end of the motor 92 is movably connected with a rotating shaft 91 through a coupler, the rotating shaft 91 movably penetrates through the outer wall of the pumping shell 1, one end of the rotating shaft 91 is provided with a bevel gear transmission pair 9, the outer wall of the bevel gear transmission pair 9 is fixedly provided with a fixed rod 93 through welding, the fixed rod 93 is fixedly welded with the inner wall of the pumping shell 1, one end of the bevel gear transmission pair 9 is provided with a connecting rod 8, the outer wall of the connecting rod 8 is fixedly provided with a reverse stirring sheet 7 through welding, one end of the connecting rod 8 is connected with a reverse mechanism, one end of the reverse mechanism is connected with a hollow shaft 4, the outer wall of the hollow shaft 4 is provided with a pump liquid blade 51, when the device is used for pumping blood, firstly, the motor 92 is started, and an output shaft thereof drives the rotating shaft 91 to rotate, then the rotating shaft 91 rotates, the bevel gear transmission pair 9 transmits the rotating torque to the connecting rod 8 to rotate the connecting rod, the reverse stirring piece 7 is driven to rotate, the torque is reversed through the reverse mechanism, the rotating direction of the hollow shaft 4 is opposite to that of the connecting rod 8, the rotating directions of the pumping liquid blade 51 and the reverse stirring piece 7 are opposite, pressure difference is generated by the rotation of the pumping liquid blade 51 to pump liquid, the liquid is pumped from one end of the pumping shell 1 to the liquid outlet end 11, the liquid just leaving the pumping liquid blade 51 still keeps a rotating vortex state, at the moment, the vortex is reversely stirred by the reverse stirring piece 7 through friction force to be in a reverse or even a vanishing state, and tiny substances in blood are prevented from rotating at high speed to impact on a tube wall contraction section when contracting through the liquid outlet end 11 after leaving the pumping liquid blade 51, vortex is prevented from being generated, and the activity of blood is improved;
the reversing mechanism comprises a square shell 6, a hollow shaft 4 and a connecting rod 8 are respectively movably inserted into the upper inner wall and the lower inner wall of the square shell 6, one end of the connecting rod 8 is sleeved with a first bevel gear 61, the bottom of the hollow shaft 4 is sleeved with a third bevel gear 63, a second bevel gear 62 is movably mounted on the inner wall of one side of the square shell 6 through a bearing, the first bevel gear 61 is meshed with the second bevel gear 62, the second bevel gear 62 is meshed with the third bevel gear 63, when the connecting rod 8 is driven to rotate in the forward direction, the first bevel gear 61 is driven to rotate in the forward direction, the second bevel gear 62 is driven to rotate, meanwhile, the hollow shaft 4 rotates in the reverse direction through the meshing of the second bevel gear 62 and the third bevel gear 63, torque in the opposite direction can be conveniently transmitted, the rotating directions of the hollow shaft 4 and the connecting rod 8 are opposite, and the design of the reversing mechanism is simple and compact;
the outer wall of the hollow shaft 4 is fixedly provided with a hollow casing 5 through welding, the inside of the hollow casing 5 is communicated with the outer wall of the hollow shaft 4, the pump liquid blade 51 is fixedly arranged on the outer wall of the hollow casing 5 through welding, the inner wall of the pump liquid blade 51 is integrally provided with a heating convex part 53, the heating convex part 53 is communicated with the hollow casing 5, blood is heated through the heating convex part 53, so that the blood entering the body of a patient is heated to a degree suitable for the body of the patient through the heat exchange effect of the heating convex part 53, compared with the heating performed by other heat exchangers or electric heaters, the contact area between the heating convex part 53 and the blood is larger in the heating mode, and at the moment, because of the vortex formed by pumping the blood, heat is rapidly diffused to the whole blood channel through the vortex, so that the temperature distribution is more uniform;
the inner wall of the pump fluid blade 51 is correspondingly provided with an extension flow channel 52, a one-way valve 521 is installed inside the extension flow channel 52, the conduction directions of the two one-way valves 521 are opposite, the two extension flow channels 52 are communicated with the inner wall of the heating bulge 53, one of the two extension flow channels 52 is communicated with the hollow shaft 4, the other one of the two extension flow channels is communicated with the hollow casing 5, blood entering the hollow shaft 4 firstly enters one of the extension flow channels 52 and then enters the heating bulge 53, the blood is cooled and then discharged from the other extension flow channel 52 to the inside of the hollow casing 5, the flow of a heating medium is convenient to realize, the heating medium is completely isolated from the blood, the normal blood pumping is not influenced, the heating medium cannot flow back through the one-way valve 521, and the flow direction of the heating medium is controlled;
the outer wall of the hollow shaft 4 is rotatably sleeved with a fixed casing 3, one side of the fixed casing 3 is fixedly provided with an extension branch pipe 31 through welding, the extension branch pipe 31 penetrates through the outer wall of the pumping shell 1, the fixed casing 3 and the hollow casing 5 are arranged in an aligned mode, a heat medium entering the hollow casing 5 can be discharged into the fixed casing 3 and discharged from the extension branch pipe 31, and therefore the heat medium can be conveniently discharged;
one end of the hollow shaft 4 extends out of the outer wall of the pumping shell 1 to prevent the heat medium from leaking and polluting blood, and one end of the hollow casing 5 extends out of the outer wall of the pumping shell 1 to also play a role in preventing blood from being polluted;
a sealing sleeve 32 is rotatably sleeved on the outer wall of the hollow shaft 4, the sealing sleeve 32 is arranged between the fixed casing 3 and the hollow casing 5 in a fitting manner, the fixed casing 3 and the hollow casing 5 are communicated with the sealing sleeve 32, the space between the fixed casing 3 and the hollow casing 5 is sealed through the sealing sleeve 32, a heat medium is prevented from flowing out of the sealing sleeve 32, and the sealing performance of the fixed casing 3 and the hollow casing 5 is improved;
one end of the extension branch pipe 31 is connected with the heat exchanger 2 in a penetrating way, one end of the heat exchanger 2 is connected with one end of the hollow shaft 4 in a penetrating way, a medium which flows out through the hollow casing 5 and is cooled by blood flows to the heat exchanger 2 to heat the medium, and the heated medium can enter the hollow shaft 4 again to realize the circulation of the heat medium;
the reverse stirring sheet 7 is uniformly provided with the hollow grooves 71, the hollow grooves 71 are of a long strip-shaped structure, when the reverse stirring sheet 7 rotates, in order to avoid the water flow from forming reverse vortex, the resistance of the water flow is reduced through the hollow grooves 71, a part of the water flow flows out through the hollow grooves 71, the contact area of the water flow is increased, and the vortex of the water flow is reduced by friction force as much as possible.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A medical blood pumping device comprising a pumping housing (1), characterized in that: the one end of pump sending casing (1) is provided with out liquid end (11), the top of pump sending casing (1) is through welded fastening has motor (92), the output of motor (92) has pivot (91) through shaft coupling swing joint, the outer wall of pump sending casing (1) is run through in pivot (91) activity, the one end of pivot (91) is provided with bevel gear transmission pair (9), the outer wall of bevel gear transmission pair (9) is through welded fastening has dead lever (93), dead lever (93) are through welded fastening with the inner wall of pump sending casing (1), connecting rod (8) are installed to the one end of bevel gear transmission pair (9), the outer wall of connecting rod (8) is through welded fastening has reverse stirring piece (7), the one end of connecting rod (8) is connected with reversal mechanism, the one end of reversal mechanism is connected with quill shaft (4), the outer wall of quill shaft (4) is provided with pump liquid blade (51).
2. The medical blood pumping device according to claim 1, wherein: the reversing mechanism comprises a square shell (6), a hollow shaft (4) and a connecting rod (8) are movably inserted into the upper inner wall and the lower inner wall of the square shell (6) respectively, a first bevel gear (61) is sleeved at one end of the connecting rod (8), a third bevel gear (63) is sleeved at the bottom of the hollow shaft (4), a second bevel gear (62) is movably mounted on the inner wall of one side of the square shell (6) through a bearing, the first bevel gear (61) is meshed with the second bevel gear (62), and the second bevel gear (62) is meshed with the third bevel gear (63).
3. The medical blood pumping device according to claim 2, wherein: the outer wall of the hollow shaft (4) is fixedly provided with a hollow casing (5) through welding, the interior of the hollow casing (5) is communicated with the outer wall of the hollow shaft (4), the pump liquid blades (51) are fixedly arranged on the outer wall of the hollow casing (5) through welding, the inner wall of each pump liquid blade (51) is integrally provided with a heating protruding part (53), and the heating protruding parts (53) are communicated with the hollow casing (5).
4. A medical blood pumping device according to claim 3, wherein: the inner wall of pump liquid blade (51) has seted up extension runner (52) correspondingly, the internally mounted of extension runner (52) has check valve (521), two the switching-on opposite direction of check valve (521), two it all link up each other with the inner wall of heating bellying (53) to extend runner (52), two one of them of extension runner (52) link up with hollow shaft (4) mutually, and another link up with hollow cover shell (5) mutually.
5. The medical blood pumping device according to claim 4, wherein: the outer wall of quill shaft (4) rotates to cup joint and has cup jointed fixed cover shell (3), one side of fixed cover shell (3) is through welded fastening has extension branch pipe (31), extend branch pipe (31) and pass the outer wall of pump sending casing (1), fixed cover shell (3) and cavity cover shell (5) are the setting of aliging each other.
6. The medical blood pumping device according to claim 5, wherein: the outer wall of quill shaft (4) rotates to be cup jointed and has been cup jointed seal cover (32), seal cover (32) laminating setting is between fixed cover shell (3) and hollow shell (5), fixed cover shell (3) and hollow shell (5) all link up with seal cover (32) mutually.
7. The medical blood pumping device according to claim 6, wherein: one end of the extension branch pipe (31) is connected with a heat exchanger (2) in a penetrating way, and one end of the heat exchanger (2) is connected with one end of the hollow shaft (4) in a penetrating way.
8. The medical blood pumping device according to claim 7, wherein: hollow groove (71) have evenly been seted up on reverse stirring piece (7), hollow groove (71) are rectangular shape structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211476558.8A CN115837102A (en) | 2022-11-23 | 2022-11-23 | Medical blood pumping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211476558.8A CN115837102A (en) | 2022-11-23 | 2022-11-23 | Medical blood pumping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115837102A true CN115837102A (en) | 2023-03-24 |
Family
ID=85576322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211476558.8A Withdrawn CN115837102A (en) | 2022-11-23 | 2022-11-23 | Medical blood pumping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115837102A (en) |
-
2022
- 2022-11-23 CN CN202211476558.8A patent/CN115837102A/en not_active Withdrawn
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20230324 |