CN115920228B - Catheter pump - Google Patents
Catheter pump Download PDFInfo
- Publication number
- CN115920228B CN115920228B CN202211696529.2A CN202211696529A CN115920228B CN 115920228 B CN115920228 B CN 115920228B CN 202211696529 A CN202211696529 A CN 202211696529A CN 115920228 B CN115920228 B CN 115920228B
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- Prior art keywords
- ring
- fixed mounting
- pipe
- movable ring
- guide pipe
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- 239000008280 blood Substances 0.000 claims abstract description 32
- 210000004369 blood Anatomy 0.000 claims abstract description 32
- 210000002489 tectorial membrane Anatomy 0.000 claims abstract description 25
- 239000011248 coating agent Substances 0.000 claims abstract description 15
- 238000000576 coating method Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 230000007246 mechanism Effects 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 15
- 239000012528 membrane Substances 0.000 claims description 11
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 230000010412 perfusion Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 2
- 230000004087 circulation Effects 0.000 abstract description 10
- 210000005240 left ventricle Anatomy 0.000 description 17
- 239000000498 cooling water Substances 0.000 description 16
- 238000005192 partition Methods 0.000 description 16
- 210000001367 artery Anatomy 0.000 description 15
- 238000000926 separation method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 210000002376 aorta thoracic Anatomy 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000010247 heart contraction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The invention relates to the technical field of catheter pumps, and discloses a catheter pump. In the catheter pump, the supporting top plate is arranged in the coating film, and the deflection driving of the supporting top plate is realized through the relative movement relation of the driving shaft and the catheter, so that the supporting top plate supports the wall surface of the coating film, and the coating film keeps a circular passage. Prevent the tectorial membrane from producing deformation, ensured that blood from the support gets into through the circulation efficiency that tectorial membrane was discharged from blood exit end the highest.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a catheter pump.
Background
An interventional catheter pump device, abbreviated as a blood pump, can pump blood. Taking left ventricle assist as an example, in the prior art, a pump of an interventional catheter pump device is generally arranged in a left ventricle of a subject, an impeller of the pump is driven to rotate by a flexible shaft, and power is transmitted to the pump by driving the flexible shaft by a motor. Also, the catheter pump enables insertion into a patient's blood vessel and expansion after insertion in order to ensure stable contraction and expansion. During compression and expansion, both the rotor (e.g., impeller) and the housing are typically deformed accordingly, and the stability of the lobe gap size (also known as the lobe gap, i.e., the gap between the radially outer end of the impeller and the inner wall of the pump housing) is an important contributor to the operational stability of the blood pump.
As in chinese patent application CN111375097a, the axial deformation is reduced by a distance L between the top surface of the distal end of the support member and the projection of the top surface of the distal end of the blade (i.e., the top surface of the blade shaft) in the axial direction when the expandable tubular body is in the expanded state. The distal end of the support member is the end of the support member fixedly connected to the inner wall of the expandable tubular body. The axial deflection refers to the difference between the axial length of the expandable tubular body when in the fully expanded state and the axial length of the expandable tubular body when in the fully contracted state, and may be 3mm to 5mm. Because the distance L between the projection of the top surface of the support member and the top surface of the paddle shaft in the axial direction is less than or equal to the axial deformation amount, when the expandable tubular body is in the fully compressed state, the support member can be ensured to enter the first through hole entirely (it is understood that all the support member main body part can be omitted, and the distal end part connected with the inner wall of the expandable tubular body can be omitted), thereby effectively avoiding the occurrence of an additional rigid section at the distal end of the expandable tubular body and minimizing the damage to the aortic arch of the patient when entering the patient.
But there are also the following problems: when the catheter pump is operated after being placed in the left ventricle and the artery, the heart beats and drives blood to generate intermittent impact on the tectorial membrane tube, so that the tectorial membrane is easy to deform, and the circulation efficiency in the tectorial membrane is reduced.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides the catheter pump which has the advantages of ensuring that the tectorial membrane cannot deform during operation, ensuring the circulation efficiency of blood in the tectorial membrane and the like, and solves the problem that the circulation efficiency in the tectorial membrane is reduced due to the fact that intermittent impact is generated on the tectorial membrane tube by heart beating to drive the blood when the catheter pump is arranged in a left ventricle and an artery and the catheter pump is operated.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions: a catheter pump: comprises a machine body, an intervention component arranged on the machine body and an auxiliary mechanism arranged on the intervention component;
the interventional component comprises a bracket and a tectorial membrane, wherein the tectorial membrane is at least partially coated on the bracket, the distal end of the tectorial membrane is communicated with the bracket, and the proximal end of the tectorial membrane is provided with a blood outlet end;
the auxiliary mechanism comprises a supporting top plate, and a plurality of supporting top plates are axially distributed in the film;
the interventional component further comprises a guide pipe and a driving shaft, wherein the driving shaft penetrates through the guide pipe, an impeller is fixedly installed on the driving shaft, and the impeller is positioned outside the guide pipe;
a near-end bearing chamber is fixedly arranged at one end of the guide pipe, the bracket is fixedly arranged on the near-end bearing chamber, a far-end bearing chamber is fixedly arranged at one end of the bracket, and the impeller is positioned in the bracket;
the support top plate is configured to deflect when the drive shaft moves relative to the catheter and to distract the membrane when the support top plate deflects toward the inner membrane wall.
Preferably: the stent deployment process can move the drive shaft relative to the catheter to deflect the support ceiling toward the inner covered wall.
Preferably: the motor body is fixedly arranged in the machine body and is connected with the coupler in power, a driving shaft is in running fit with the coupler in power connection, the driving shaft is located in the guide pipe, one end of the guide pipe, which is close to the impeller, is sealed with the driving shaft, and the driving shaft can slide relative to the guide pipe.
Preferably: the auxiliary mechanism further comprises a ball bearing, a moving ring and a through port, wherein the ball bearing is arranged in the guide pipe, the inner ring of the ball bearing is fixedly connected with the driving shaft, the moving ring is fixedly arranged on the outer ring of the ball bearing, and the moving ring is in sliding fit with the inner wall of the guide pipe;
the catheter is characterized in that a proximal bearing chamber is fixedly arranged at the distal end of the catheter, the bracket is fixedly arranged on the proximal bearing chamber, and a distal bearing chamber is fixedly arranged at the distal end of the bracket.
Preferably: the guide pipe is provided with a plurality of through holes, and the through holes are opposite to the movable ring;
the utility model discloses a catheter, including the pipe, the pipe is fixed on the pipe, the last normal running fit of pipe has a plurality of locating shafts, the locating shaft all is located by the opening, all be provided with the telescopic link on the locating shaft, the dead lever of telescopic link all with locating shaft fixed connection, the extension rod of telescopic link all runs through the opening, the extension rod of telescopic link all with remove ring normal running fit, all fixed mounting has the dead lever on the locating shaft, the dead lever all with the telescopic link is relative, the dead lever all with the telescopic link is followed location axisymmetric distribution, all fixed mounting has on the dead lever the roof is supported.
Preferably: the through holes are uniformly distributed in a round shape, and the positioning shafts are uniformly distributed in a round shape.
Preferably: the interventional assembly further comprises a coupler, a perfusate input and a retaining sleeve,
the device comprises a body, a perfusion fluid input end, a holding sleeve, a guide pipe, a perfusion fluid guide pipe and a perfusion fluid guide pipe.
Preferably: the auxiliary mechanism is further provided with a heat dissipation mechanism, the heat dissipation mechanism comprises a heat conduction ring, a separation plate, a fixing frame and a spring, the heat conduction ring is fixedly installed in the guide pipe, the separation plate is in sliding fit with the heat conduction ring, the separation plate penetrates through the heat conduction ring, the separation plate is opposite to the movable ring, the fixing frame is fixedly installed in the guide pipe, the fixing frame is opposite to the separation plate, the spring is arranged between the fixing frame and the separation plate, one end of the spring is connected with the fixing frame, and the other end of the spring is connected with the separation plate.
Preferably: the heat conducting ring is fixedly provided with a transmission pipe, the transmission pipe is communicated with the heat conducting ring, the transmission pipe extends to the inside of the machine body, the water box is fixedly arranged in the machine body, and the transmission pipe is communicated with the water box.
Preferably: the water box is characterized in that a pump is fixedly arranged in the machine body, the working end of the pump is positioned in the water box, a radiating fin is fixedly arranged in the machine body, a radiating pipe is fixedly arranged on the water box and communicated with the water box, and the radiating pipe is communicated with the radiating fin.
(III) beneficial effects
Compared with the prior art, the invention provides a catheter pump, which has the following beneficial effects:
1. in the catheter pump, the supporting top plate is arranged in the coating film, and the deflection driving of the supporting top plate is realized through the relative movement relation of the driving shaft and the catheter, so that the supporting top plate supports the wall surface of the coating film, and the coating film keeps a circular passage.
2. According to the catheter pump, the interventional component firstly stretches into the left ventricle from the artery, one half of the tectorial membrane is arranged in the artery in the left ventricle, the stent is arranged in the left ventricle, the blood outlet end is arranged in the artery, the starting device is started, the stent stretches from the contracted state, meanwhile, the stent drives the supporting top plate to deflect, the supporting top plate supports the wall surface of the tectorial membrane, so that the tectorial membrane is kept in a circular passage, deformation of the tectorial membrane is prevented, and the highest flow efficiency of blood entering from the stent and discharged from the blood outlet end through the tectorial membrane is ensured.
3. According to the catheter pump, when the support is driven by the driving shaft to open, the driving shaft drives the ball bearing to move, the ball bearing drives the moving ring to move, and the moving ring drives the telescopic rod to deflect in the through hole, so that the telescopic rod drives the positioning shaft to rotate, the positioning shaft drives the fixing rod to deflect, and the fixing rod drives the supporting top plate to deflect, so that the supporting top plate props against the wall surface of the tectorial membrane, the supporting top plate forms a fixed support, the inner channel of the tectorial membrane is ensured to be a circular channel all the time, the tectorial membrane is prevented from deforming due to the impact of blood, and the circulation efficiency of the blood is ensured to be always in the maximum state.
4. According to the conduit pump, when the heat conducting ring is not provided with a passage, the pump enables cooling water in the water box to circulate, and the cooling water can enter the radiating pipe so as to enter the radiating fin to generate circulation flow, so that the cooling water in the water box dissipates heat, and the cooling water can be ensured to be recycled.
Drawings
FIG. 1 is a schematic view showing the distribution of the internal structure of a coating film according to the present invention;
FIG. 2 is a schematic diagram of an interventional component of the present invention;
FIG. 3 is a schematic view showing the distribution of the internal structure of the catheter according to the present invention;
FIG. 4 is a schematic diagram showing the distribution of the auxiliary mechanism structure of the present invention;
FIG. 5 is a schematic view showing the distribution of structures at the moving ring according to the present invention;
FIG. 6 is a schematic diagram of a heat dissipation mechanism according to the present invention;
FIG. 7 is a schematic diagram showing the distribution of the internal structure of the machine body according to the present invention;
fig. 8 is a schematic diagram of the overall structure of the catheter pump of the present invention.
In the figure: 1. a body; 2. an interventional component; 21. a coupler; 22. a perfusate input; 23. a retaining sleeve; 24. a conduit; 25. a motor main body; 26. a drive shaft; 27. an impeller; 28. a proximal bearing chamber; 29. a bracket; 210. a distal bearing chamber; 211. a non-invasive support; 212. coating a film; 213. a blood outlet port; 3. an auxiliary mechanism; 31. a ball bearing; 32. a moving ring; 33. a through port; 34. positioning a shaft; 35. a telescopic rod; 36. a fixed rod; 37. a supporting top plate; 4. a heat dissipation mechanism; 41. a heat conducting ring; 42. a partition plate; 43. a fixing frame; 44. a spring; 45. a transmission tube; 46. a water box; 47. a pump machine; 48. a heat sink; 49. and a radiating pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only 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.
As described in the background art, the present application provides a catheter pump to solve the above technical problems.
In an exemplary embodiment of the present application, as shown in fig. 1-2, a catheter pump includes a body 1, an intervention component 2 disposed on the body 1, and an auxiliary mechanism 3 disposed on the intervention component 2, where the intervention component 2 includes a support 29 and a covering film 212, the upper part of the support 29 is at least partially covered with the covering film 212, a distal end of the covering film 212 is communicated with the support 29, and a blood outlet end 213 is opened on a proximal end of the covering film 212;
the auxiliary mechanism 3 comprises a supporting top plate 37, a plurality of supporting top plates 37 are arranged in the coating film 212, and the supporting top plates 37 are uniformly distributed in a circular shape;
the interventional component 2 further comprises a guide pipe 24 and a driving shaft 26, wherein the driving shaft 26 penetrates through the guide pipe 24, an impeller 27 is fixedly arranged on the driving shaft 26, and the impeller 27 is positioned outside the guide pipe 24;
a proximal bearing chamber 28 is fixedly arranged at one end of the catheter 24, a support 29 is fixedly arranged on the proximal bearing chamber 28, a distal bearing chamber 210 is fixedly arranged at one end of the support 29, and the impeller 27 is positioned in the support 29;
the support top plate 37 is configured such that the support top plate 37 deflects when the drive shaft 26 moves relative to the guide tube 24, and the support top plate 37 distracts the membrane 212 when the support top plate 37 deflects toward the inner wall of the membrane 212.
The connection between the bracket 29 and the drive shaft 26 and the guide tube 24 is such that the opening of the bracket 29 moves the drive shaft 26 relative to the guide tube 24 to deflect the support top plate 37 toward the inner wall of the covering film 212.
When the membrane 212 is operated, the stent 29 is opened, blood enters the membrane 212 from the stent 29, and blood is discharged from the blood outlet end 213, and the stent 29 drives the supporting top plate 37 to deflect at the same time, so that the supporting top plate 37 supports the side wall of the membrane 212 after the stent 29 is completely opened.
When the invention is used:
the interventional component 2 is firstly extended into the left ventricle from the artery, half of the covering film 212 is in the artery in the left ventricle, the bracket 29 is in the left ventricle, the blood outlet end 213 is in the artery, the device is started, the bracket 29 is opened from a contracted state, meanwhile, the bracket 29 drives the supporting top plate 37 to deflect, the supporting top plate 37 supports the wall surface of the covering film 212, so that the covering film 212 keeps a circular passage, deformation of the covering film 212 is prevented, and the highest circulation efficiency of blood entering from the bracket 29 and discharged from the blood outlet end 213 through the covering film 212 is ensured.
Further, as shown in fig. 1-4, the interventional component 2 further includes a coupler 21, a perfusate input end 22, a retaining sleeve 23, and a conduit 24, wherein the coupler 21 is fixedly mounted on the machine body 1, the perfusate input end 22 is fixedly mounted on the coupler 21, the perfusate input end 22 is communicated with the interior of the coupler 21, the retaining sleeve 23 is fixedly mounted on the coupler 21, the conduit 24 is fixedly mounted on the retaining sleeve 23, the conduit 24 penetrates through the retaining sleeve 23, and the conduit 24 is communicated with the coupler 21.
Further, as shown in fig. 2-5, a motor main body 25 is fixedly installed in the machine body 1, the motor main body 25 is in power connection with the coupler 21, a driving shaft 26 is in running fit on the coupler 21, the driving shaft 26 is in power connection with the coupler 21, the driving shaft 26 is located in the guide pipe 24, the driving shaft 26 penetrates through the guide pipe 24, an impeller 27 is fixedly installed on the driving shaft 26, the impeller 27 is located outside the guide pipe 24, and a seal is formed between one end of the guide pipe 24, which is close to the impeller 27, and the driving shaft 26.
Further, as shown in fig. 2-5, a proximal bearing chamber 28 is fixedly mounted at one end of the catheter 24, a support 29 is fixedly mounted on the proximal bearing chamber 28, a distal bearing chamber 210 is fixedly mounted at one end of the support 29, the impeller 27 is positioned inside the support 29, and a non-invasive support 211 is fixedly mounted on the distal bearing chamber 210.
Wherein, the noninvasive support 211 and the catheter 24 are introduced into the left ventricle through the artery, the support 29 is located in the left ventricle, the blood outlet end 213 is located in the artery, the control manner of controlling the relative movement of the driving shaft 26 and the catheter 24 (which can be realized according to the technical means that can be thought of by those skilled in the art, and will not be described in detail herein, in the embodiments, the movement of the driving shaft 26 and the catheter 24 and the connected components will be referred to in the following description, and will be selected according to the requirements) is implemented, so that the driving shaft 26 drives the distal bearing chamber 210 to move, so that the distal bearing chamber 210 and the proximal bearing chamber 28 are close to each other, to open the support 29, then the motor main body 25 is started, the motor main body 25 drives the coupler 21, the coupler 21 drives the driving shaft 26 to rotate, and the driving shaft 26 drives the impeller 27 to rotate, so that the blood flows into the coating 212 from the support 29 through the rotation of the impeller 27, and finally flows out of the blood outlet end 213.
Further, as shown in fig. 4-6, the auxiliary mechanism 3 further includes a ball bearing 31, a moving ring 32, and a through hole 33, the ball bearing 31 is disposed in the conduit 24, the inner ring of the ball bearing 31 is fixedly connected with the driving shaft 26, the moving ring 32 is fixedly mounted on the outer ring of the ball bearing 31, the moving ring 32 is slidably matched with the inner wall of the conduit 24, the conduit 24 is provided with a plurality of through holes 33, the through holes 33 are uniformly distributed in a circular shape, and the through holes 33 are opposite to the moving ring 32.
Further, as shown in fig. 4-6, a plurality of positioning shafts 34 are rotatably matched on the catheter 24, the positioning shafts 34 are all located beside the through holes 33, the positioning shafts 34 are uniformly distributed in a round shape, telescopic rods 35 are all arranged on the positioning shafts 34, the fixed rods of the telescopic rods 35 are fixedly connected with the positioning shafts 34, the extending rods of the telescopic rods 35 penetrate through the through holes 33, the extending rods of the telescopic rods 35 are rotatably matched with the movable ring 32, fixing rods 36 are fixedly arranged on the positioning shafts 34, the fixing rods 36 are opposite to the telescopic rods 35, the fixing rods 36 are symmetrically distributed along the positioning shafts 34 with the telescopic rods 35, and supporting top plates 37 are fixedly arranged on the fixing rods 36.
When the driving shaft 26 drives the bracket 29 to open, the driving shaft 26 drives the ball bearing 31 to move, the ball bearing 31 drives the moving ring 32 to move, the moving ring 32 drives the telescopic rod 35 to deflect in the through hole 33, the telescopic rod 35 drives the positioning shaft 34 to rotate, the positioning shaft 34 drives the fixing rod 36 to deflect, the fixing rod 36 drives the supporting top plate 37 to deflect, and the supporting top plate 37 is propped against the wall surface of the covering film 212, so that the supporting top plate 37 forms a fixed support, the internal channel of the covering film 212 is always a circular channel, deformation of the covering film 212 caused by impact of blood is avoided, and the circulation efficiency of blood is always ensured to be in a maximum state.
Further, as shown in fig. 5-7, the auxiliary mechanism 3 is further provided with a heat dissipation mechanism 4, the heat dissipation mechanism 4 includes a heat conducting ring 41, a partition plate 42, a fixing frame 43 and a spring 44, the heat conducting ring 41 is fixedly installed in the conduit 24, the partition plate 42 is slidably matched with the heat conducting ring 41, the partition plate 42 penetrates through the heat conducting ring 41, the partition plate 42 is opposite to the movable ring 32, the fixing frame 43 is fixedly installed in the conduit 24, the fixing frame 43 is opposite to the partition plate 42, the spring 44 is arranged between the fixing frame 43 and the partition plate 42, one end of the spring 44 is connected with the fixing frame 43, and the other end of the spring 44 is connected with the partition plate 42.
Further, a through hole is formed in one end of the partition plate 42 near the movable ring 32, and the through hole is moved into the heat conduction ring 41 when the partition plate 42 is moved, so that a passage is formed in the heat conduction ring 41.
Further, as shown in fig. 5-7, a transmission pipe 45 is fixedly installed on the heat conducting ring 41, the transmission pipe 45 is communicated with the heat conducting ring 41, the transmission pipe 45 extends into the machine body 1, a water box 46 is fixedly installed in the machine body 1, the transmission pipe 45 is communicated with the water box 46, a pump 47 is fixedly installed in the machine body 1, the working end of the pump 47 is located in the water box 46, a radiating fin 48 is fixedly installed in the machine body 1, a radiating pipe 49 is fixedly installed on the water box 46, the radiating pipe 49 is communicated with the water box 46, and the radiating pipe 49 is communicated with the radiating fin 48.
Wherein, along with the movement of the movable ring 32, the movable ring 32 butts against the partition plate 42 to move the partition plate 42, the movement of the partition plate 42 causes the internal passage of the heat conducting ring 41, and when the internal passage of the heat conducting ring 41 is performed, the heat conducting ring 41 is abutted against the movable ring 32, meanwhile, the pump 47 is started, the pump 47 is operated to generate circulation flow of cooling water in the water box 46, and when the passage of the heat conducting ring 41 is performed, the cooling water enters the heat conducting ring 41 through the transmission pipe 45 to circulate, so that the heat conducting ring 41 cools the movable ring 32, the heat generated by the ball bearing 31 is prevented from affecting blood, and when the passage of the heat conducting ring 41 is not performed, the pump 47 causes the cooling water in the water box 46 to circulate, the cooling water enters the heat radiating pipe 49, and thus the circulation flow is generated in the heat radiating fin 48, so that the cooling water in the water box 46 radiates heat, and the cooling water can be ensured to be circulated for use.
Working principle:
extending the interventional assembly 2 from the artery into the left ventricle with half of the membrane 212 in the left ventricle and half in the artery with the stent 29 in the left ventricle and the blood outlet port 213 in the artery, actuating the device, the stent 29 expanding from the contracted state while the stent 29 drives the support roof 37 to deflect, causing the support roof 37 to support the wall of the membrane 212 to maintain the membrane 212 in a circular path;
wherein, firstly, the noninvasive support 211 and the catheter 24 are guided into the left ventricle through the artery, the bracket 29 is positioned in the left ventricle, the blood outlet end 213 is positioned in the artery, then the motor main body 25 is started, the driving shaft 26 is pulled, the driving shaft 26 drives the distal end bearing chamber 210 to move, so that the distal end bearing chamber 210 and the proximal end bearing chamber 28 are mutually close to each other to open the bracket 29, then the motor main body 25 drives the coupler 21, the coupler 21 drives the driving shaft 26 to rotate, the driving shaft 26 drives the impeller 27 to rotate, so that blood flows into the covering film 212 from the bracket 29 through the rotation of the impeller 27, and finally flows out from the blood outlet end 213;
meanwhile, when the driving shaft 26 drives the bracket 29 to open, the driving shaft 26 drives the ball bearing 31 to move, the ball bearing 31 drives the moving ring 32 to move, the moving ring 32 drives the telescopic rod 35 to deflect in the through hole 33, the telescopic rod 35 drives the positioning shaft 34 to rotate, the positioning shaft 34 drives the fixing rod 36 to deflect, the fixing rod 36 drives the supporting top plate 37 to deflect, and the supporting top plate 37 is propped against the wall surface of the coating film 212, so that the supporting top plate 37 forms a fixed support, and the internal channel of the coating film 212 is always a circular channel;
meanwhile, as the movable ring 32 moves, the movable ring 32 abuts against the partition plate 42 to move the partition plate 42, the partition plate 42 moves to enable the heat conducting ring 41 to pass through the internal passage, and when the heat conducting ring 41 passes through the internal passage, the heat conducting ring 41 is abutted against the movable ring 32, meanwhile, the pump 47 is started, the pump 47 is operated to enable cooling water in the water box 46 to generate circulating flow, when the heat conducting ring 41 passes through the passage, the cooling water enters the heat conducting ring 41 through the transmission pipe 45 to circulate, the heat conducting ring 41 cools the movable ring 32, heat generated by the ball bearings 31 is prevented from affecting blood, when the heat conducting ring 41 does not pass through the passage, the pump 47 enables the cooling water in the water box 46 to circulate, the cooling water enters the cooling pipe 49, and accordingly circulating flow is generated in the cooling fin 48, so that the cooling water in the water box 46 dissipates heat, and the cooling water can be ensured to be circulated.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A catheter pump, characterized by: comprises a machine body (1), an intervention component (2) arranged on the machine body (1) and an auxiliary mechanism (3) arranged on the intervention component (2);
the interventional component (2) comprises a bracket (29) and a tectorial membrane (212), wherein the tectorial membrane (212) is at least partially coated on the bracket (29), the distal end of the tectorial membrane (212) is communicated with the bracket (29), and the proximal end of the tectorial membrane (212) is provided with a blood outlet end (213);
the auxiliary mechanism (3) comprises a supporting top plate (37), and a plurality of supporting top plates (37) are axially distributed inside the coating film (212);
the interventional component (2) further comprises a guide pipe (24) and a driving shaft (26), wherein the driving shaft (26) penetrates through the guide pipe (24), an impeller (27) is fixedly installed on the driving shaft (26), and the impeller (27) is located outside the guide pipe (24);
a proximal bearing chamber (28) is fixedly arranged at one end of the guide pipe (24), the bracket (29) is fixedly arranged on the proximal bearing chamber (28), a distal bearing chamber (210) is fixedly arranged at one end of the bracket (29), and the impeller (27) is positioned in the bracket (29);
the support top plate (37) is arranged such that when the drive shaft (26) moves relative to the guide tube (24), the support top plate (37) deflects, and when the support top plate (37) deflects towards the inner wall of the coating (212), the support top plate (37) expands the coating (212);
-a process of opening the stent (29) capable of moving the drive shaft (26) relative to the catheter (24) to deflect the support roof (37) towards the inner wall of the covering membrane (212);
a motor main body (25) is fixedly arranged in the machine body (1), the motor main body (25) is in power connection with a coupler (21), a driving shaft (26) is in running fit on the coupler (21), the driving shaft (26) is in power connection with the coupler (21), the driving shaft (26) is positioned in the guide pipe (24), one end of the guide pipe (24) which is close to the impeller (27) is sealed with the driving shaft (26), and the driving shaft (26) can slide relative to the guide pipe (24);
the auxiliary mechanism (3) further comprises a ball bearing (31), a moving ring (32) and a through hole (33), the ball bearing (31) is arranged in the guide pipe (24), the inner ring of the ball bearing (31) is fixedly connected with the driving shaft (26), the moving ring (32) is fixedly arranged on the outer ring of the ball bearing (31), and the moving ring (32) is in sliding fit with the inner wall of the guide pipe (24);
the far end of the catheter (24) is fixedly provided with a near-end bearing chamber (28), the near-end bearing chamber (28) is fixedly provided with a bracket (29), and the far end of the bracket (29) is fixedly provided with a far-end bearing chamber (210);
the guide pipe (24) is provided with a plurality of through openings (33), and the through openings (33) are opposite to the movable ring (32);
the utility model discloses a catheter, including pipe (24) and fixed mounting, including pipe (24) and movable ring (32), fixed mounting is connected with fixed mounting, movable ring (32) are connected with fixed mounting, fixed mounting is connected with movable ring (32) and fixed mounting is connected with movable ring (33), fixed mounting is connected with movable ring (36), fixed mounting is connected with movable ring (36) is connected with movable ring (32), fixed mounting is connected with movable ring (35), fixed mounting is connected with movable ring (36) is connected with movable ring (33), fixed mounting is connected with movable ring (36) in a fixed mounting, fixed mounting is connected with movable ring (36) is connected with movable ring (37) in a fixed mounting is connected with movable ring (35) in a fixed mounting is connected with movable ring (34) in a fixed mounting is connected with movable ring (35).
2. A catheter pump as claimed in claim 1, wherein: the through holes (33) are uniformly distributed in a round shape, and the positioning shafts (34) are uniformly distributed in a round shape.
3. A catheter pump as claimed in claim 1, wherein:
the intervention assembly further comprises a coupler (21), a perfusate input end (22) and a retaining sleeve (23),
the perfusion device is characterized in that the coupler (21) is fixedly arranged on the machine body (1), the perfusion liquid input end (22) is fixedly arranged on the coupler (21), the perfusion liquid input end (22) is communicated with the inside of the coupler (21), the retaining sleeve (23) is fixedly arranged on the coupler (21), the guide pipe (24) is fixedly arranged on the retaining sleeve (23), the guide pipe (24) penetrates through the retaining sleeve (23), and the guide pipe (24) is communicated with the coupler (21).
4. A catheter pump according to claim 3, wherein:
the utility model discloses a heat dissipation mechanism, including heat conduction ring (41), division board (42), mount (43), spring (44), fixed mounting has in pipe (24) heat conduction ring (41), sliding fit has on heat conduction ring (41) division board (42), division board (42) run through heat conduction ring (41), division board (42) with remove ring (32) relatively, fixed mounting has in pipe (24) mount (43), mount (43) with division board (42) are relative, mount (43) with be provided with between division board (42) spring (44), the one end of spring (44) with mount (43) link to each other, the other end of spring (44) with division board (42) link to each other.
5. A catheter pump as claimed in claim 4, wherein:
the heat conducting ring (41) is fixedly provided with a transmission pipe (45), the transmission pipe (45) is communicated with the heat conducting ring (41), the transmission pipe (45) extends to the inside of the machine body (1), the machine body (1) is internally fixedly provided with a water box (46), and the transmission pipe (45) is communicated with the water box (46).
6. A catheter pump as claimed in claim 5, wherein:
the novel water tank is characterized in that a pump (47) is fixedly installed in the machine body (1), the working end of the pump (47) is located inside the water tank (46), a radiating fin (48) is fixedly installed in the machine body (1), a radiating pipe (49) is fixedly installed on the water tank (46), the radiating pipe (49) is communicated with the water tank (46), and the radiating pipe (49) is communicated with the radiating fin (48).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211696529.2A CN115920228B (en) | 2022-12-28 | 2022-12-28 | Catheter pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211696529.2A CN115920228B (en) | 2022-12-28 | 2022-12-28 | Catheter pump |
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| CN115920228A CN115920228A (en) | 2023-04-07 |
| CN115920228B true CN115920228B (en) | 2024-03-08 |
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| CN202211696529.2A Active CN115920228B (en) | 2022-12-28 | 2022-12-28 | Catheter pump |
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| CN115920228A (en) | 2023-04-07 |
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