CN115154890B - Percutaneous ventricular assist system - Google Patents
Percutaneous ventricular assist system Download PDFInfo
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- CN115154890B CN115154890B CN202210783040.2A CN202210783040A CN115154890B CN 115154890 B CN115154890 B CN 115154890B CN 202210783040 A CN202210783040 A CN 202210783040A CN 115154890 B CN115154890 B CN 115154890B
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- 230000002861 ventricular Effects 0.000 title claims abstract description 24
- 238000001727 in vivo Methods 0.000 claims abstract description 24
- 239000012530 fluid Substances 0.000 claims description 20
- 239000013307 optical fiber Substances 0.000 claims description 20
- 238000011010 flushing procedure Methods 0.000 claims description 19
- 238000004804 winding Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 230000005693 optoelectronics Effects 0.000 claims description 2
- 238000000338 in vitro Methods 0.000 abstract description 6
- 238000002560 therapeutic procedure Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000000835 fiber Substances 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000017531 blood circulation Effects 0.000 description 3
- 206010019280 Heart failures Diseases 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 206010007625 cardiogenic shock Diseases 0.000 description 2
- 238000013130 cardiovascular surgery Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002618 extracorporeal membrane oxygenation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
-
- 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
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
- A61M60/237—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly axial components, e.g. axial flow 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
- A61M60/50—Details relating to control
- A61M60/508—Electronic control means, e.g. for feedback regulation
-
- 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
- A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Biomedical Technology (AREA)
- Anesthesiology (AREA)
- Mechanical Engineering (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)
Abstract
The present invention provides a percutaneous ventricular assist system comprising: the control host is connected with a conduit axial flow pump with a built-in driver or a conduit axial flow pump with an external driver; the control host automatically identifies the model of the connected conduit axial flow pump, and when the conduit axial flow pump with the built-in driver is identified, the control host automatically switches to an in-vivo driving mode; when the catheter axial flow pump with the external driver is identified, the control host automatically switches to an in-vitro driving mode. The control computer can be compatible with the catheter axial flow pump arranged in the driver and the catheter axial flow pump arranged outside the driver, and the same control computer can be used for respectively driving the two types of catheter axial flow pumps to meet the requirements of patients with different indications, so that the equipment purchasing and maintenance cost is saved, the economic burden of the patients is reduced, and the popularization of medical instruments and therapies of the type is facilitated.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a percutaneous ventricular assist system.
Background
The percutaneous ventricular assist device is widely applied to the application fields of perioperative protection of high-risk cardiovascular surgery, first aid of cardiogenic shock, acute decompensation heart failure treatment and the like at present, and has the advantages of permanent implantation, simplicity and rapidness for a patient, small trauma of the patient and the like.
More sophisticated percutaneous ventricular assist devices, mainly including IABP, impella, tandemHeart, centriMag and ECMO, have a very high market share of the catheter-based axial flow pump. For such ducted axial flow pump products, there are generally two technical solutions: 1) The driver is built in: the driver is implanted into the body to directly drive the impeller; 2) The driver is arranged externally, and the rotation power is transmitted to the impeller in the body through the flexible transmission shaft. The built-in scheme of the driver has the advantages of being reliable in long-term operation, capable of accurately detecting the operation state and the like, but high-cost components such as the driver, a sensor adhered to a pump shell and the like are disposable consumable materials, and the use cost of the system is high; the external scheme of the driver has the advantages that the driver, the sensor and the like can be repeatedly used, the use cost is low, the economic burden of a patient is small, but the mechanical reliability of the flexible transmission shaft is low, so that the technical scheme is difficult to stably operate for a long time. Therefore, in the two schemes, the scheme with the built-in driver is more suitable for the first aid of cardiogenic shock, and the scheme with the built-out driver is more suitable for the treatment fields of short-time support, such as perioperative protection of high-risk cardiovascular surgery, first aid decompensation heart failure treatment and the like, and more sensitive cost.
Generally, in both the above two solutions, an external control host is required for controlling the operation of the motor and detecting the operation state of the motor. However, such a control host is expensive, and in the prior art, one external control host cannot be applied to both the internal driver scheme and the external driver scheme. For the internal scheme of the driver, a control host matched with the internal scheme of the driver is needed to be purchased, and for the external scheme of the driver, a control host matched with the external scheme of the driver is needed to be purchased. Repeated purchase control of the main machine increases equipment purchase and maintenance costs, is unfavorable for therapy popularization, and increases economic burden of patients.
Disclosure of Invention
The invention aims to provide a percutaneous ventricular assist system which is compatible with a catheter axial flow pump with a built-in driver and a catheter axial flow pump with an external driver, meets the requirements of patients with different indications, saves the equipment purchasing and maintaining cost, is beneficial to the popularization of therapy and reduces the economic burden of the patients.
To solve the above technical problems, the present invention provides a percutaneous ventricular assist system, including: the control host is connected with a conduit axial flow pump with a built-in driver or a conduit axial flow pump with an external driver;
the control host automatically identifies the model of the connected conduit axial flow pump, and when the conduit axial flow pump with the built-in driver is identified, the control host automatically switches to an in-vivo driving mode; when the catheter axial flow pump with the external driver is identified, the control host automatically switches to an in-vitro driving mode.
Optionally, the internal conduit axial flow pump of the driver and the external conduit axial flow pump of the driver are respectively provided with a memory chip, and the memory chips are used for storing specification models and/or operation parameters of the conduit axial flow pump;
and the control host judges the model of the conduit axial flow pump connected with the control host by identifying the resistance or inductance characteristics of a driver in the conduit axial flow pump or reading information in a storage chip.
Optionally, the control host selects a corresponding control algorithm, control parameters and a host operation interface according to the model of the connected conduit axial flow pump so as to drive and control the conduit axial flow pump.
Optionally, the type of the built-in conduit axial flow pump of the driver is consistent with the type of the driver in the built-out conduit axial flow pump of the driver, and the performance parameter ranges are overlapped, so that the driver is driven and controlled by using a uniform driving plate in the control host.
Optionally, the catheter axial flow pump with built-in driver comprises: the device comprises an in-vivo driver and an axial flow pump which are positioned in a body, an electromechanical joint which is positioned outside the body and connected with the in-vivo driver, and an extension lead which is connected with the electromechanical joint and the control host.
Optionally, the electromechanical joint includes the shell, is located extension wire link and the pipe link at shell both ends, and is located the storage chip and the electrical transfer board in the shell, extension wire link with between storage chip and the electrical transfer board, the pipe link with all be connected with pressure sensor optic fibre and internal driver wire between storage chip and the electrical transfer board, just the pipe link still is provided with the flushing fluid pipeline, the flushing fluid pipeline is connected to the flushing fluid link through flushing fluid filter, flushing fluid accumulator.
Optionally, the catheter axial flow pump with the external driver comprises: the device comprises an axial flow pump positioned in a body, an external driving handle positioned outside the body, a catheter pump connector, a flexible transmission shaft connected with the axial flow pump and the catheter pump connector, and an extension wire connected with the external driving handle and the control host.
Optionally, the extracorporeal drive handle comprises: the device comprises a driving handle shell, an external driver, a memory chip, a Hall sensor, a temperature sensor and a coupler, wherein the external driver, the memory chip, the Hall sensor and the temperature sensor are arranged in the driving handle shell, and the coupler is arranged at one end of the driving handle and connected with the external driver.
Optionally, the catheter pump connector comprises: the flexible shaft and the rigid rotating shaft are mutually connected, and sealing rings and front and rear bearings are arranged around the flexible shaft and the rigid rotating shaft; the connection between the external driving handle and the catheter pump joint is realized through the mechanical connection between the coupler and the rigid rotating shaft.
Optionally, the joints of the control host and the extension wires are photoelectric joints or multicore electric joints.
Optionally, the optical-electrical connector comprises a plurality of electrical ferrules and at least one optical fiber ferrule; when the conduit axial flow pump arranged in the driver is connected, the electric insert core comprises a motor winding wire and a storage chip wire, and the optical fiber insert core comprises a pressure sensor optical fiber insert core; when the external conduit axial flow pump of the driver is connected, the electric insert core comprises a motor winding wire, a Hall sensor wire, a temperature sensor wire and a memory chip wire.
Optionally, the multi-core electrical connector comprises a plurality of electrical ferrules; when the conduit axial flow pump arranged in the driver is connected, the electric insert core comprises a motor winding wire, a pressure sensor wire and a storage chip wire; when the external conduit axial flow pump of the driver is connected, the electric insert core comprises a motor winding wire, a Hall sensor wire, a temperature sensor wire and a memory chip wire.
The percutaneous ventricular assist system provided by the invention comprises a control host and a catheter axial flow pump with an internal driver or an external driver, wherein the catheter axial flow pump is connected with the control host; the control host automatically identifies the model of the connected conduit axial flow pump, and when the conduit axial flow pump with the built-in driver is identified, the control host automatically switches to an in-vivo driving mode; when the catheter axial flow pump with the external driver is identified, the control host automatically switches to an in-vitro driving mode. The control computer can be compatible with the catheter axial flow pump arranged in the driver and the catheter axial flow pump arranged outside the driver, and the same control computer can be used for respectively driving the two catheter axial flow pumps to meet the requirements of patients with different indications, so that the equipment purchasing and maintenance cost is saved, the economic burden of the patients is reduced, and the popularization of medical instruments and therapies of the type is facilitated.
Drawings
It will be appreciated by those skilled in the art that the drawings are provided for a better understanding of the invention and do not constitute any limitation on the scope of the invention.
Fig. 1 is a block diagram of a percutaneous ventricular assist system according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of an electromechanical joint according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of an extracorporeal drive handle according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a catheter pump connector according to an embodiment of the present invention.
Fig. 5 is a schematic view of an embodiment of the present invention after an extracorporeal drive handle is assembled with a catheter pump connector.
Fig. 6 is a cross-sectional view of an optical electrical connector provided in an embodiment of the present invention.
Fig. 7 is a cross-sectional view of a multi-core electrical connector provided in accordance with an embodiment of the present invention.
Reference numerals: 1-a control host; 10-a catheter axial flow pump with a built-in driver; 11-an in vivo driver; 12-an axial flow pump; 13-an electromechanical joint; 130-a housing; 131-extending the wire connection end; 132-a catheter connection end; 133-a memory chip and an electrical interposer; 134-pressure sensor fiber; 135-in-vivo driver lead; 136-flushing fluid line; 137-flushing fluid filter; 138-flushing fluid accumulator; 139-a rinse connection; 14-extending the wire; 20-a catheter axial flow pump with an external driver; 21-an axial flow pump; 22-conduit pump connection; 220-a joint housing; 221-a flexible shaft; 222-a rigid shaft; 223-sealing ring; 224-front and rear bearings; 23-an in vitro driving handle; 230-a drive handle housing; 231-an extracorporeal drive; 232-a memory chip; 233-hall sensor and temperature sensor; 234-coupling; 24-extending the wire; 25-flexible drive shaft.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific embodiments thereof in order to make the objects, advantages and features of the invention more apparent. It should be noted that the drawings are in a very simplified form and are not drawn to scale, merely for convenience and clarity in aiding in the description of embodiments of the invention. Furthermore, the structures shown in the drawings are often part of actual structures. In particular, the drawings are shown with different emphasis instead being placed upon illustrating the various embodiments.
As used in this disclosure, the singular forms "a," "an," and "the" include plural referents, the term "or" are generally used in the sense of comprising "and/or" and the term "several" are generally used in the sense of comprising "at least one," the term "at least two" are generally used in the sense of comprising "two or more," and the term "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance or number of features indicated. Thus, a feature defining "a first", "a second", and "a third" may include one or at least two of the feature, either explicitly or implicitly, unless the context clearly dictates otherwise.
Fig. 1 is a block diagram of a percutaneous ventricular assist system according to an embodiment of the present invention. As shown in fig. 1, the percutaneous ventricular assist system provided by the present invention includes: a control host 1, a conduit axial flow pump 10 with an internal driver or a conduit axial flow pump 20 with an external driver connected with the control host 1; the control host 1 automatically identifies the type of the connected conduit axial flow pump, and when the conduit axial flow pump 10 with the built-in driver is identified, the control host 1 automatically switches to an in-vivo driving mode; when the catheter axial flow pump 20 with the external driver is identified, the control host 1 automatically switches to the external driving mode.
The control master 1 can only operate in one mode at a time. By switching the control modes, the same control host 1 can be used to drive and control the catheter axial flow pump 10 with the built-in driver and the catheter axial flow pump 20 with the built-out driver respectively. The requirements of patients with different indications are met, so that the equipment purchasing and maintaining cost is saved, the economic burden of the patients is reduced, and the popularization of medical instruments and therapies of the type is facilitated.
The inside of the conduit axial flow pump 10 with the built-in driver and the outside of the driver are both provided with memory chips which are used for storing the specification model and/or the operation parameters of the conduit axial flow pump. The control host 1 determines the type of the catheter axial flow pump connected with the control host 1 by identifying the resistance or inductance characteristics of the driver in the catheter axial flow pump or reading the information in the memory chip, that is, the internal catheter axial flow pump 10 of the driver and the external catheter axial flow pump 20 of the driver are respectively provided with characteristic signals which can be identified by the control host 1, such as electrical signal characteristics such as resistance or inductance characteristics, chip memory information, etc., so that the control host 1 can identify the specification and the type of the catheter axial flow pump connected with the control host. In an embodiment, the memory chip of the catheter axial flow pump 10 with built-in driver stores the blood flow pressure at the blood outflow window, while the memory chip of the catheter axial flow pump 20 with built-out driver does not detect the blood flow pressure, so when the control host reads the blood flow pressure data, the model of the catheter axial flow pump with built-in driver can be quickly identified. In another embodiment, under the two conditions of internal driver and external driver, the resistance or inductance characteristics of the drivers are greatly different, and the control host machine rapidly identifies the type of the axial flow pump according to the characteristics of the electric signals. After being connected with the catheter axial flow pump, the control host 1 selects a corresponding control algorithm, control parameters and a host operation interface according to the connected model of the catheter axial flow pump so as to adapt to the corresponding model of the catheter axial flow pump and drive and control the catheter axial flow pump.
Preferably, the internal-driver catheter axial flow pump 10 and the external-driver catheter axial flow pump 20 need to ensure that the types of the two drivers are consistent and the performance parameter ranges overlap when designing or selecting, for example, the rated voltage, rated current, end resistance and inductance of the drivers are consistent or relatively close, so that the drivers are driven and controlled by using a unified driving board in the control host 1. The driver refers to a motor or a motor-like rotary power device.
With continued reference to fig. 1, the catheter axial pump 10 with built-in driver includes: an in-vivo driver 11 and an axial flow pump 12 located in the body, an electromechanical joint 13 located outside the body and connected with the in-vivo driver 11, and an extension wire 14 connecting the electromechanical joint 13 and the control host 1. Since the in-vivo driver 11 is directly connected to the axial flow pump 12 and is implanted together in the body through a catheter, it is not distinguished in fig. 1.
The axial flow pump 12 may be provided with a pressure sensor for sensing the pressure, for detecting the working conditions of the axial flow pump 12 and the natural heart. The in-vivo driver 11 is connected with the control host 1 through the electromechanical joint 13 and the extension lead 14, and the electromechanical joint 13 is located outside the body and used for connecting the in-vivo driver lead and the pressure sensor lead. Preferably, a memory chip is arranged on the electromechanical connector 13 or the extension wire 14 for storing the specification model and/or the operating parameters of the axial flow pump 11. The electromechanical coupling 13 is quickly detachable, and the electromechanical coupling 13 can be disconnected when the control master 1 needs to end the control of the in-vivo driver 11.
Fig. 2 is a schematic structural view of an electromechanical joint according to an embodiment of the present invention. Referring to fig. 2, the electromechanical joint 13 includes a housing 130, an extension wire connecting end 131 and a conduit connecting end 132 at two ends of the housing 130, and a storage chip and an electrical adapter plate 133 in the housing 130, wherein the extension wire connecting end 131 is connected between the storage chip and the electrical adapter plate 133, a pressure sensor optical fiber 134 and an in-vivo driver wire 135 are connected between the conduit connecting end 132 and the storage chip and the electrical adapter plate 133, and the conduit connecting end 132 is further provided with a flushing fluid pipeline 136, and the flushing fluid pipeline 136 is connected to a flushing fluid connecting end 139 through a flushing fluid filter 137 and a flushing fluid accumulator 138.
The electromechanical connector 13 comprises three connection ends, the extension wire connection end 131 is used for being connected with the extension wire 14, the catheter connection end 132 is used for being connected to a catheter which is implantable in the body and is connected with the body driver 11 and the axial pump 12, and the flushing fluid connection end 139 is used for being connected with flushing fluid. The extension wire connection end 131 contains a pressure sensor fiber 134 and an in-vivo driver wire 135, and the catheter connection end 132 contains a pressure sensor fiber 134, an in-vivo driver wire 135, and an irrigation fluid line 136.
With continued reference to fig. 1, the catheter axial pump 20 with the external driver includes: an axial flow pump 21 located in the body, an external driving handle 23 located outside the body and a catheter pump connector 22, a flexible transmission shaft 25 connecting the axial flow pump 21 and the catheter pump connector 22, and an extension wire 24 connecting the external driving handle 23 and the control host 1. The control host 1 transmits electric power to an external driver in the external driving handle 23 through the extension wire 24, and the external driver transmits high-speed rotation power to an impeller of the axial flow pump 21 implanted in the body through the flexible transmission shaft 25, so as to realize a blood pump function. Wherein the catheter pump connector 22 is quickly detachable, and the catheter pump connector 22 can be disconnected when the control host 1 needs to end the control of the external driver.
Fig. 3 is a schematic structural view of an extracorporeal drive handle according to an embodiment of the present invention. Referring to fig. 3, the extracorporeal drive handle 23 includes a drive handle housing 230, an extracorporeal drive 231, a memory chip 232, a hall sensor and a temperature sensor 233, and a coupling 234, which is disposed in the drive handle housing 230 and is connected to the extracorporeal drive 231, at one end of the drive handle 23.
The hall sensor is used for detecting the rotation speed of the coupler 234, and the memory chip 232 is used for storing the specification model and/or the operation parameters of the axial flow pump 21.
Fig. 4 is a schematic structural view of a catheter pump connector according to an embodiment of the present invention. Referring to fig. 4, the catheter pump connector 22 includes: the connector housing 220, a flexible shaft 221 and a rigid rotating shaft 222 which penetrate through the connector housing 220 and are connected with each other, and a sealing ring 223 and a front bearing 224 and a rear bearing 224 are arranged around the flexible shaft 221 and the rigid rotating shaft 222.
Fig. 5 is a schematic view of an embodiment of the present invention after an extracorporeal drive handle is assembled with a catheter pump connector. Referring to fig. 5, the coupling of the extracorporeal drive handle 23 to the catheter pump connector 22 is accomplished by a mechanical connection of the coupler 234 to the rigid shaft 222. Since the catheter pump connector 22 is integrally designed with the axial flow pump 21 located in the body, the catheter pump connector 22 is disposable only.
In order to realize that one control host 1 is simultaneously applicable to the conduit axial flow pump 10 with built-in driver and the conduit axial flow pump 20 with built-out driver, when designing the joint between the control host 1 and the extension line 14 or the extension line 24, two cases of built-in driver and built-out driver need to be considered. When the driver is built in, the sensors for detecting the working states of the axial flow pump and the heart can be optical fiber sensors or electric sensors. And when the driver is external, no optical fiber sensor is needed whether in vivo or in vitro. Therefore, in order to be compatible with the two cases of the internal driver and the external driver, the connector between the control host 1 and the extension line is an optoelectronic connector or a multi-core electrical connector. Whether an opto-electrical connector or a multi-core electrical connector is used depends on whether the internal pressure sensor in the catheter axial flow pump 10 built in the driver is an optical fiber sensor or an electrical sensor, if an optical fiber pressure sensor is used, an opto-electrical connector is used, and if a voltage sensor is used, a multi-core electrical connector is used.
The optical-electrical connector comprises a plurality of electrical ferrules and at least one optical fiber ferrule; when the conduit axial flow pump arranged in the driver is connected, the electric insert core comprises a motor winding wire and a storage chip wire, and the optical fiber insert core comprises a pressure sensor optical fiber insert core; when the external conduit axial flow pump of the driver is connected, the electric insert core comprises a motor winding wire, a Hall sensor wire, a temperature sensor wire and a memory chip wire. It should be noted that, the plurality of electrical ferrules and the at least one optical fiber ferrule may be integrally designed in one joint structure or may be separately designed in a plurality of joint structures.
Fig. 6 is a cross-sectional view of an optical electrical connector provided in an embodiment of the present invention. Specifically, referring to fig. 6, the optical connector includes 13 ferrules, wherein 1-12 are electrical ferrules, and 13 are optical fiber ferrules. For a catheter axial flow pump with built-in driver, the definition of each ferrule is: the electrical lock pin 1-4 is a motor winding wire, compared with the external conduit axial flow pump 20 of the driver, the internal conduit axial flow pump 10 of the driver has 1 grounding wire, so that four wires are arranged, and the grounding wire further ensures the safety of patients when the driver is internally arranged; the electrical inserting cores 9-12 are wires of the memory chip, and 4 pins are arranged around the memory chip, so that four wires are arranged; the fiber ferrule 13 is an in-vivo pressure sensor fiber ferrule, while the remaining ferrules 5-8 have no signal.
For a catheter axial flow pump with an external driver, the definition of each ferrule is: the electric core insert 1-3 is a motor winding wire, and the motor is provided with a three-phase winding, so that the motor is provided with three wires; the electrical ferrule 4-8 is a Hall sensor and a temperature sensor wire; the electrical core 9-12 is a memory chip wire; the fiber stub 13 is signal free.
The photoelectric connector realizes the compatibility of the conduit axial flow pump 10 with the built-in driver and the conduit axial flow pump 20 with the built-out driver through 12 electric ferrules and 1 optical fiber ferrule. In fig. 6, the optical connector is circular, the optical fiber ferrule 13 is located in the middle, and 1-12 electrical ferrules are located around the optical fiber ferrule 13 to form a circle, but the present invention is not limited thereto, and the layout of the ferrule positions does not affect the performance thereof.
The multi-core electrical connector comprises a plurality of electrical ferrules; when the conduit axial flow pump arranged in the driver is connected, the electric insert core comprises a motor winding wire, a pressure sensor wire and a storage chip wire; when the external conduit axial flow pump of the driver is connected, the electric insert core comprises a motor winding wire, a Hall sensor wire, a temperature sensor wire and a memory chip wire. Preferably, the multi-core electrical connector further comprises at least one spare ferrule.
Fig. 7 is a cross-sectional view of a multi-core electrical connector provided in accordance with an embodiment of the present invention. Specifically, referring to fig. 7, the multi-core electrical connector includes 14 ferrules, wherein 1-13 are electrical ferrules and 14 are spare ferrules. For a catheter axial flow pump with built-in driver, the definition of each ferrule is: the electric core inserts 1-4 are motor winding wires; the electrical ferrule 5-9 is a pressure sensor wire; the electrical ferrules 10-13 are memory chip wires.
For a catheter axial flow pump with an external driver, the definition of each ferrule is: the electrical ferrule 1-3 is a motor winding wire; the electrical ferrule 4-8 is a Hall sensor and a temperature sensor wire; the electrical core 9-12 is a memory chip wire; the electrical ferrule 13 is signal free.
The multicore electrical connector realizes the compatibility of the conduit axial flow pump 10 with the built-in driver and the conduit axial flow pump 20 with the built-out driver through 13 electrical ferrules and 1 standby ferrule. In fig. 7, the multi-core electrical connector is circular, the ferrules 1-10 are located at the periphery and the ferrules 11-14 are located at the inner periphery, but the present invention is not limited thereto, and the layout of the ferrule positions does not affect the performance thereof.
In summary, the percutaneous ventricular assist system provided by the invention includes a control host and a catheter axial pump with an internal driver or an external driver connected with the control host; the control host automatically identifies the model of the connected conduit axial flow pump, and when the conduit axial flow pump with the built-in driver is identified, the control host automatically switches to an in-vivo driving mode; when the catheter axial flow pump with the external driver is identified, the control host automatically switches to an in-vitro driving mode. The control computer can be compatible with the catheter axial flow pump arranged in the driver and the catheter axial flow pump arranged outside the driver, and the same control computer can be used for respectively driving the two catheter axial flow pumps to meet the requirements of patients with different indications, so that the equipment purchasing and maintenance cost is saved, the economic burden of the patients is reduced, and the popularization of medical instruments and therapies of the type is facilitated.
The above description is only illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.
Claims (11)
1. A percutaneous ventricular assist system, comprising: the control host is connected with a conduit axial flow pump with a built-in driver or a conduit axial flow pump with an external driver;
the control host automatically identifies the model of the connected conduit axial flow pump, and when the conduit axial flow pump with the built-in driver is identified, the control host automatically switches to an in-vivo driving mode; when the external catheter axial flow pump of the driver is identified, the control host automatically switches to an external driving mode;
the internal conduit axial flow pump of the driver and the external conduit axial flow pump of the driver are respectively internally provided with a memory chip, and the memory chips are used for storing the model and/or the operation parameters of the conduit axial flow pump;
the control host reads information in the storage chip, or judges the model of the conduit axial flow pump connected with the control host by identifying the resistance or inductance characteristics of a driver in the conduit axial flow pump, the type of the sensor or the layout position of the sensor.
2. The percutaneous ventricular assist system of claim 1, wherein the control host selects a corresponding control algorithm, control parameters, and host operating interface to drive and control the catheter axial pump according to a model of the connected catheter axial pump.
3. The percutaneous ventricular assist system of claim 1, wherein the intra-driver catheter axial pump is of a type consistent with the driver in the extra-driver catheter axial pump and has an overlapping range of performance parameters to enable the driver to be driven and controlled using a unified drive plate in the control host.
4. The percutaneous ventricular assist system of claim 1, wherein the driver-built-in catheter axial pump comprises: the device comprises an in-vivo driver and an axial flow pump which are positioned in a body, an electromechanical joint which is positioned outside the body and connected with the in-vivo driver, and an extension lead which is connected with the electromechanical joint and the control host.
5. The percutaneous ventricular assist system of claim 4, wherein the electromechanical connector comprises a housing, an extension wire connection end and a catheter connection end at both ends of the housing, and a memory chip and an electrical adapter plate within the housing, pressure sensor optical fibers and in-vivo driver wires are connected between the extension wire connection end and the memory chip and the electrical adapter plate, between the catheter connection end and the memory chip and the electrical adapter plate, and the catheter connection end is further provided with a flushing fluid line connected to the flushing fluid connection end through a flushing fluid filter, a flushing fluid accumulator.
6. The percutaneous ventricular assist system of claim 5, wherein the driver-external catheter axial pump comprises: the device comprises an axial flow pump positioned in a body, an external driving handle positioned outside the body, a catheter pump connector, a flexible transmission shaft connected with the axial flow pump and the catheter pump connector, and an extension wire connected with the external driving handle and the control host.
7. The percutaneous ventricular assist system of claim 6, wherein the extracorporeal drive handle comprises: the device comprises a driving handle shell, an external driver, a memory chip, a Hall sensor, a temperature sensor and a coupler, wherein the external driver, the memory chip, the Hall sensor and the temperature sensor are arranged in the driving handle shell, and the coupler is arranged at one end of the driving handle and connected with the external driver.
8. The percutaneous ventricular assist system of claim 7, wherein the catheter pump connector comprises: the flexible shaft and the rigid rotating shaft are mutually connected, and sealing rings and front and rear bearings are arranged around the flexible shaft and the rigid rotating shaft; the connection between the external driving handle and the catheter pump joint is realized through the mechanical connection between the coupler and the rigid rotating shaft.
9. The percutaneous ventricular assist system of claim 8, wherein the connection of the control host to the extension lead is an optoelectronic connection or a multi-core electrical connection.
10. The percutaneous ventricular assist system of claim 9, wherein the optical-electrical connector comprises a plurality of electrical ferrules and at least one optical fiber ferrule; when the conduit axial flow pump arranged in the driver is connected, the electric insert core comprises a motor winding wire and a storage chip wire, and the optical fiber insert core comprises a pressure sensor optical fiber insert core; when the external conduit axial flow pump of the driver is connected, the electric insert core comprises a motor winding wire, a Hall sensor wire, a temperature sensor wire and a memory chip wire.
11. The percutaneous ventricular assist system of claim 9, wherein the multi-core electrical connector comprises a plurality of electrical ferrules; when the conduit axial flow pump arranged in the driver is connected, the electric insert core comprises a motor winding wire, a pressure sensor wire and a storage chip wire; when the external conduit axial flow pump of the driver is connected, the electric insert core comprises a motor winding wire, a Hall sensor wire, a temperature sensor wire and a memory chip wire.
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