Artificial heart pump thrombus warning device

Abstract

The present application belongs to the field of biomedical engineering, and particularly relates to a thrombus warning device for artificial heart pump. The present application can solve the problem that thrombus in the artificial heart pump is difficult to be monitored in real time and timely warning is caused to trigger thrombus complications. The device comprises an artificial heart pump, a magnet holder, a motor shaft, a current collector ring, a support, a motor, a control warning device, a stud, and a nut. The artificial heart pump is clamped with the support, the support is screwed with the motor, the motor shaft is clamped with the magnet holder, and the magnet holder is coupled with the impeller in the artificial heart pump through a magnet. The magnet holder has a groove and a magnetic bead, the surface of the groove and the magnetic bead is attached with a material capable of generating electricity by mutual friction, the inner ring of the current collector ring is connected with the groove, and the outer ring is connected with the control warning device. When the artificial heart pump generates thrombus, the magnetic bead rolls in the groove under the action of the magnetic field change, the material on the surface of the groove and the magnetic bead generates electricity by friction, a voltage signal is generated and transmitted to the control warning device through the current collector ring, and thus the thrombus state of the artificial heart pump can be monitored and timely warning is caused.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of biomedical engineering, in particular to a thrombus warning device for an artificial heart pump. BACKGROUND

[0002] Artificial heart can completely or partially replace the function of natural heart, help heart failure patients to achieve bridge to transplantation (BTT), bridge to recovery (BTR) or permanent replacement therapy (DT), and is a necessary life-sustaining means for heart failure patients who cannot perform natural heart transplantation surgery, and is used in the clinical treatment of heart failure disease. The China Cardiovascular Disease Report 2018 released in 2019 pointed out that there are 4.5 million heart failure patients in China, and the market demand for artificial heart is huge. However, the application of artificial materials leads to the generation of fatal thrombus in the artificial heart (especially long-term implantation), which easily causes thrombus complications such as myocardial infarction and cerebral infarction, and most likely leads to paralysis and even death of the patient. The thrombus formation state in the artificial heart has become an important detection index in clinical application.

[0003] At present, the thrombus detection research based on the principle of X-ray / optical / ultrasound has become a hot spot at home and abroad, however, the CT method based on X-ray has radiation damage and cannot be used continuously, and it is powerless for the thrombus inside the artificial heart with metal structure (titanium alloy, etc.); the optical OCT method cannot pass through the non-transparent shell / plating film and cannot effectively monitor the internal thrombus; the ultrasonic wave method has low resolution for red blood cells and fibrin and is easily disturbed by blood microbubbles; the conventional thrombus detection methods such as indirect troubleshooting through changes of artificial heart system flow / rotation speed / pressure / power parameters or surgical disassembly observation can only find late-stage, large-area / volume thrombus and cannot realize early-stage and whole-process dynamic monitoring and warning, which delays thrombolytic therapy. SUMMARY

[0004] The purpose of the present application is to provide a thrombus warning device for an artificial heart pump to solve the above-mentioned problems existing in the prior art. The present application provides a thrombus warning device for an artificial heart pump, which is harmless, accurate and can realize real-time dynamic monitoring of thrombus in an artificial heart pump.

[0005] The above-mentioned purpose of the present application is realized by the following technical scheme:

[0006] A thrombus warning device for an artificial heart pump, comprising an artificial heart pump, a magnet holder, a motor shaft, a current collector ring, a bracket, a motor, a control warning device, a stud and a nut, the artificial heart pump is clamped with the bracket, the bracket is screwed with the motor, the motor shaft is clamped with the magnet holder, and the magnet holder and the impeller in the artificial heart pump are provided with magnets that are inductively coupled.

[0007] Further, the magnet holder is provided with a groove, and a magnetic bead is arranged in the groove, and a material capable of generating electricity by mutual friction is attached to the surface of the groove and the magnetic bead.

[0008] Further, the current collector ring comprises an inner ring and an outer ring, the outer ring is mounted on the motor, the outer ring is connected with the control alarm through a connecting line, the inner ring is fixedly mounted with the motor shaft through screws, and the inner ring is connected with the surface of the groove through a connecting line.

[0009] Further, the control alarm has display, alarm and storage processing functions, and the pre-calibrated value of the relationship between the thrombus and the voltage signal is stored in the control alarm.

[0010] The artificial heart pump thrombus alarm device has the advantages that when thrombus is generated in the artificial heart, the magnetic bead moves in the groove under the action of the magnetic field change, and the material attached to the surface of the groove and the magnetic bead rubs to generate electricity and generates a voltage signal during the movement; the device adopts a current collector ring structure, comprises an inner ring and an outer ring, the inner ring is fixedly mounted with the motor shaft through screws and connected with the groove through a connecting line, and the outer ring is connected with the control alarm through a connecting line, so that the voltage signal is transmitted to the control alarm through the current collector ring, the dynamic change of the thrombus in the artificial heart can be monitored, and the timely alarm function is realized to remind the doctor to take thrombolytic measures in time, the accuracy is high, and the device can be widely applied to the health care field. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is an assembly drawing of the artificial heart pump thrombus alarm device;

[0012] Figure 2 is an exploded view of the artificial heart pump thrombus alarm device;

[0013] Figure 3 is a schematic view of the current collector ring structure;

[0014] Figure 4 is an axonometric view of the magnet holder;

[0015] Figure 5 is a top view of the magnet holder.

[0016] In the drawings:

[0017] 1. Artificial heart pump; 2. Magnet holder; 3. Current collector ring; 4. Nut; 5. Bracket; 6. Stud; 7. Motor shaft; 8. Motor; 9. Control alarm; 2-1. Groove; 2-2. Aluminum foil; 2-3. Magnetic bead; 3-1. Inner ring; 3-2. Outer ring; 3-3. Connecting line I; 3-4. Connecting line II. DETAILED DESCRIPTION

[0018] The detailed content of the present application and its specific implementation are further illustrated below in combination with the drawings.

[0019] Referring to Figures 1 to 5 A kind of artificial heart pump thrombus warning device, including artificial heart pump (1), magnet fixer (2), motor shaft (7), current collector ring (3), support (5), motor (8), control alarm (9), stud (6), nut (4), the artificial heart pump (1) is clamped with support (5), the support (5) is screwed with motor (8), the motor shaft (7) is clamped with magnet fixer (2), the magnet fixer (2) is clamped with artificial heart pump (1) in impeller built-in mutually inductive magnet.

[0020] Further, a recess (2-1) is arranged in the magnet fixer (2), the recess (2-1) is placed with magnetic beads (2-3), the recess (2-1) and the surface of the magnetic beads (2-3) are pasted with materials that can generate electricity by mutual friction, the surface of the recess (2-1) can be optionally pasted with aluminum foil (2-2), and the surface of the magnetic beads (2-3) can be optionally pasted with PTFE material or capton material.

[0021] Further, the current collector ring (3) includes an inner ring (3-1) and an outer ring (3-2), the outer ring (3-2) is installed on the motor (8), the outer ring (3-2) is connected to the control alarm (9) through a connecting wire (3-4), the inner ring (3-1) is fixedly installed on the motor shaft (7) through a screw, and the inner ring (3-1) is connected to the surface of the recess (2-1) through a connecting wire (3-3).

[0022] Further, the control alarm (9) has display, warning and storage processing functions, and the pre-calibrated values of the relationship between thrombus and voltage signal are stored in the control alarm (9).

[0023] Referring to Figure 1 As shown in FIG. 3, the specific working process of the present application is as follows:

[0024] When the artificial heart pump (1) works normally and there is no thrombus, the motor (8) drives the magnet fixer (2) to rotate through the motor shaft (7), the magnet fixer (2) drives the impeller in the artificial heart pump (1) to rotate through the magnetic field effect, that is, the impeller works to pump blood, at this time, the magnetic beads (2-3) installed in the recess (2-1) remain stationary due to the balance of the magnetic field effect, and no voltage signal is generated.

[0025] When a thrombus appears in the artificial heart pump (1), the thrombus generates resistance to the rotation of the impeller, the impeller movement slows down or stops, at this time, the "lost rotation" phenomenon appears, that is, the magnet in the impeller of the artificial heart pump (1) is misaligned with the corresponding magnet in the magnet holder (2), the magnetic field action loses balance, at this time, the magnetic beads (2-3) in the groove (2-1) are subjected to the magnetic field force, the magnetic beads (2-3) roll in the groove (2-1), so that the magnetic beads (2-3) and the friction electrification material pasted on the surface of the groove (2-1) are electrified by mutual friction, a voltage signal is generated, which is transmitted to the control alarm (9) through the current collector ring (3), the control alarm (9) receives the voltage signal and compares it with the calibration value of the relationship between the thrombus and the voltage signal stored in advance, the thrombus state level value can be obtained and displayed, if the thrombus state level value exceeds the preset value, the control alarm (9) alarms.

[0026] The application relates to a thrombus alarm device for an artificial heart pump, wherein a groove structure is arranged in a magnet holder, a magnetic bead is arranged in the groove, and materials capable of generating electricity by mutual friction are pasted on the inner surface of the groove and the outer surface of the magnetic bead; when a thrombus appears in the artificial heart, the magnetic bead moves in the groove under the action of magnetic field change, the materials pasted on the inner surface of the groove and the outer surface of the magnetic bead generate electricity by mutual friction during the movement, a voltage signal is generated and transmitted to a control alarm, thereby the dynamic change of the thrombus in the artificial heart can be displayed and monitored, and the control alarm can alarm when the thrombus state level value exceeds a preset value, reminding doctors to take thrombolytic measures in time, the accuracy is high, and the device can be widely applied in the field of health care.

Claims

1. A thrombus warning device for an artificial heart pump, characterized in that... The device includes an artificial heart pump, a magnetic retainer, a motor shaft, a slip ring, a bracket, a motor, a control alarm, studs, and nuts. The artificial heart pump is snapped into the bracket, the bracket is screwed into the motor, and the motor shaft is snapped into the magnetic retainer. The magnetic retainer and the impeller of the artificial heart pump contain mutually inductive magnets. The magnetic retainer has a groove containing a magnetic bead, and the surfaces of the groove and the magnetic bead are covered with a material that generates electricity through friction. The slip ring includes an inner ring and an outer ring. The outer ring is mounted on the motor and connected to the control alarm via a connecting wire. The inner ring is fixed to the motor shaft with screws and connected to the surface of the groove via a connecting wire. The control alarm has display, alarm, and storage functions; a pre-calibrated value showing the relationship between thrombus and voltage signal is stored in the control alarm.

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