CN217545810U - Blood pumping motor for cardiac operation - Google Patents

Abstract

The utility model relates to a medical motor technical field, in particular to cardiac surgery pump blood motor, motor body's rear end is connected with outer pipe, be provided with the inlet tube in the outer pipe, the inlet tube communicates inside motor body, the apopore has been seted up to motor body's the other end, the apopore communicates inside motor body, motor body soaks in heart blood, the impeller rotates and promotes blood and pumps, simultaneously through the inlet tube toward motor body inside let in normal saline, normal saline flows from the apopore through motor body is inside, form the positive pressure inside motor body. Compared with the prior art, the utility model discloses a heart operation pump blood motor continuously lets in the normal saline that is suitable for the human body through the inlet tube toward motor body is inside, and normal saline can make the motor cooling through motor body is inside, and normal saline flows from the apopore for at the inside positive pressure that forms of motor body, the palirrhea entering motor of blood when preventing the pump blood, can effectively avoid the motor card to die.

Description

Blood pumping motor for cardiac operation

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of medical motors, in particular to blood pumping motor for cardiac surgery.

[ background of the invention ]

The heart pump blood motor of prior art often can die the motor card because inside the blood reflux motor, can't last pump blood at supplementary heart pump blood in-process, causes the motor serious that generates heat, is unfavorable for very much that the patient rescues.

[ Utility model ] content

In order to overcome the above problems, the utility model provides a blood pumping motor for cardiac surgery, which can effectively solve the above problems.

The utility model provides a technical scheme who above-mentioned technical problem provided is: the blood pumping motor for the cardiac operation comprises a motor body and a protective cover, wherein one end of the motor body is connected with an impeller, the protective cover is arranged on the periphery of the impeller, and the protective cover is fixed with the motor body; the rear end of the motor body is connected with an outer guide pipe, a water inlet pipe is arranged in the outer guide pipe and is communicated with the inside of the motor body, a water outlet hole is formed in the other end of the motor body, and the water outlet hole is communicated with the inside of the motor body; the motor body is soaked in heart blood, the impeller rotates to push the blood to be pumped out, and meanwhile, the physiological saline is introduced into the motor body through the water inlet pipe, flows out of the water outlet hole through the inside of the motor body, and forms positive pressure inside the motor body.

Preferably, the motor body comprises a motor shell, the outer conduit is connected to one end of the motor shell, and the motor shell is made of medical titanium alloy materials.

Preferably, still be provided with the metallic channel in the outer pipe, the metallic channel keeps apart the setting with the inlet tube, sets up the motor drive line in the metallic channel, be provided with the stator in the motor casing, be provided with coil winding on the stator, the motor drive line is connected in coil winding, and the power supply of external power source is connected to the motor drive line.

Preferably, the motor driving wire comprises three conducting wires and a shielding net, and the conducting wires and the shielding net are externally wrapped by rubber.

Preferably, the one end of motor housing is connected with the water inlet front shroud, the inlet tube stretches into motor housing from the water inlet front shroud and communicates with motor housing, the water inlet front shroud is located outer pipe.

Preferably, a water inlet guide ring is arranged on the outer side of the water inlet front cover, a clamping groove is arranged on the outer side of the water inlet front cover, the wire guide groove is clamped in the clamping groove, and one end of the wire guide groove extends into the motor shell.

Preferably, the stator comprises a stator silicon steel sheet, the stator silicon steel sheet is cylindrical, a cylindrical groove is hollowed in the stator silicon steel sheet, a coil winding is arranged in the cylindrical groove, and the coil winding is connected with a motor driving wire.

Preferably, the coil winding inboard is provided with the rotor, the rotor adopts cylindric magnet steel to make, and the axle center of rotor is connected with the pivot, and the one end of pivot is stretched out and is connected in the impeller from the one end of motor housing.

Preferably, the one end of pivot is connected with preceding flange, the outside of preceding flange is connected with the apopore guard shield, the apopore sets up on the apopore guard shield, be provided with the water hole on the preceding flange, cross the water hole and align with the apopore, the one end of pivot is followed the water hole and is passed, stretches out in the apopore guard shield outside from the apopore.

Preferably, a liquid buffer groove is arranged between the water hole protective cover and the front flange and is positioned between the water passing hole and the water outlet hole.

Compared with the prior art, the utility model discloses a cardiac operation pump blood motor during operation, the motor body soaks in heart blood, the impeller rotates and promotes blood to pump out, simultaneously constantly let in the normal saline that is suitable for the human body through the inlet tube to the motor body inside, normal saline can make the motor cool down through the motor body inside, normal saline flows out from the apopore, make and form the normal pressure in the motor body inside, blood refluence gets into the motor when preventing the pump blood, can effectively avoid the motor card to die, do benefit to the motor and steadily continue to pump blood, can effectively ensure the treatment to patient; the wire groove is isolated from the water inlet pipe, so that the short circuit of the motor drive wire can be prevented.

[ description of the drawings ]

FIG. 1 is an overall structure diagram of the blood pumping motor for cardiac operation of the present invention;

FIG. 2 is a first perspective view of the motor body of the blood pumping motor for cardiac surgery of the present invention;

FIG. 3 is a second perspective view of the motor body of the blood pumping motor for cardiac operation of the present invention;

FIG. 4 is a bottom view of the motor body of the blood pumping motor for cardiac operation of the present invention;

FIG. 5 is a first perspective view of the internal structure of the motor body of the blood pumping motor for cardiac operation of the present invention;

FIG. 6 is a second perspective view of the internal structure of the motor body of the blood pumping motor for cardiac operation of the present invention;

FIG. 7 is a third perspective view of the internal structure of the motor body of the blood pumping motor for cardiac operation of the present invention;

FIG. 8 is a fourth perspective view of the internal structure of the motor body of the blood pumping motor for cardiac operation of the present invention;

fig. 9 is a fifth perspective view of the internal structure of the motor body of the blood pumping motor for cardiac operation of the present invention;

FIG. 10 is a cross-sectional view showing the connection between the water outlet hole shield and the front flange of the blood pumping motor for cardiac surgery of the present invention;

FIG. 11 is a perspective view of the impeller of the blood pumping motor for cardiac surgery of the present invention;

FIG. 12 is a front view of the impeller of the blood-pumping motor for cardiac operation of the present invention;

fig. 13 is a top view of the impeller of the blood-pumping motor for cardiac operation of the present invention.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It should be noted that all directional indications (such as up, down, left, right, front, and back … …) in the embodiments of the present invention are limited to relative positions on a given view, not absolute positions.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

Referring to fig. 1 to 13, the blood pumping motor for cardiac operation of the present invention is used for critical patients who cannot pace the heart normally, and is installed at the blood pumping port of the cardiovascular system in the heart to replace the blood pumping of the heart in a short time, so as to be used for emergency treatment in a short time. The utility model discloses a heart operation pump blood motor, including motor body 100 and protection casing 200, motor body 100's one end is connected with impeller 300, protection casing 200 sets up in impeller 300 periphery, and protection casing 200 is fixed with motor body 100 for scratch heart when preventing that impeller 300 from rotating.

The rear end of motor body 100 is connected with outer pipe 20, be provided with inlet tube 30 in the outer pipe 20, inlet tube 30 communicates inside motor body 100, apopore 400 has been seted up to the other end of motor body 100, apopore 400 communicates inside motor body 100. The during operation, motor body 100 soaks in heart blood, and impeller 300 rotates and promotes blood and pumps, constantly lets in the normal saline that is suitable for the human body toward motor body 100 inside through inlet tube 30 simultaneously, and normal saline can make the motor cooling through motor body 100 is inside, and normal saline flows from apopore 400, makes at the inside normal pressure that forms of motor body 100, the palirrhea entering motor of blood when preventing the pump blood, can effectively avoid the motor card to die, do benefit to the motor and steadily continue to carry out the pump blood, can effectively ensure the treatment to patient.

The motor body 100 includes a motor housing 11, and the outer guide duct 20 is connected to one end of the motor housing 11. The motor shell 11 is made of medical titanium alloy materials and has human body compatibility. Still be provided with metallic channel 31 in outer pipe 20, metallic channel 31 keeps apart the setting with inlet tube 30, sets up the motor drive line in the metallic channel 31, be provided with the stator in the motor casing 11, be provided with coil winding 50 on the stator, the motor drive line is connected in coil winding 50, and the power supply of external power source is connected to the motor drive line. The wire groove 31 is isolated from the water inlet pipe 30, and can prevent the motor driving wire from short-circuiting. The motor driving wire comprises three conducting wires and a shielding net, and the conducting wires and the shielding net are wrapped by rubber, so that the motor driving wire has good corrosion resistance. The connection between the motor driving wire and the coil winding 50 is provided with an insulating pad to prevent short circuit due to water. Since the coil winding 50 needs to be contacted with physiological saline, a special anti-corrosion and waterproof treatment process is required to achieve the anti-corrosion and waterproof effects.

One end of the motor shell 11 is connected with a water inlet front cover 12, the water inlet pipe 30 extends into the motor shell 11 from the water inlet front cover 12 and is communicated with the motor shell 11, and the water inlet front cover 12 is positioned in the outer guide pipe 20. The water inlet front cover 12 outside is provided with water inlet guide ring 13, does benefit to leading inlet tube 30 just, avoids crooked leading to supplying water unsmooth in the junction. The outside of water inlet front shroud 12 is provided with joint groove 14, metallic channel 31 joint is in joint groove 14, and the one end of metallic channel 31 stretches into inside motor casing 11.

The stator comprises a stator silicon steel sheet 40, the stator silicon steel sheet 40 is cylindrical, a cylindrical groove is hollowed in the stator silicon steel sheet 40, a coil winding 50 is arranged in the cylindrical groove, and the coil winding 50 is connected with a motor driving wire and generates a magnetic field after being electrified. The rotor 60 is arranged on the inner side of the coil winding 50, the rotor 60 is made of cylindrical magnetic steel, the axis of the rotor 60 is connected with a rotating shaft 61, and one end of the rotating shaft 61 extends out of one end of the motor shell 11 and is connected to the impeller 300. In operation, the rotor 60 rotates to drive the rotating shaft 61 to rotate, and the rotating shaft 61 drives the impeller 300 to rotate. Precision bearings 70 are provided at both ends of the rotation shaft 61 to ensure smooth rotation. The one end of pivot 61 is connected with preceding flange 80, the outside of preceding flange 80 is connected with apopore guard shield 90, apopore 400 sets up on apopore guard shield 90, be provided with water hole 81 on the preceding flange 80, cross water hole 81 and apopore 400 and align, the one end of pivot 61 is followed water hole 81 and is passed, stretches out in apopore guard shield 90 outside from apopore 400. The diameter of the rotating shaft 61 is smaller than the diameters of the water passing hole 81 and the water outlet hole 400, so that the physiological saline introduced from the water inlet pipe 30 into the motor can flow out from the water passing hole 81 and the water outlet hole 400. Still be provided with liquid dashpot 410 between water hole guard 90 and the preceding flange 80, liquid dashpot 410 is located between water hole 81 and the apopore 400, and the normal saline through liquid dashpot 410 can obtain the buffering effect of certain degree, can not follow apopore 400 blowout immediately, but is spring form after the buffering and gushes out, and irritability is little, does benefit to and alleviates the stimulation to patient.

The impeller 300 includes a conical main body 310, a connection hole 320 is formed at the bottom of the conical main body 310, and one end of the rotating shaft 61 is connected to the connection hole 320. The lateral part of the conical main body 310 is provided with two blades 330, the blades 330 are arranged in a curved surface manner, and the two blades 330 are arranged in a centrosymmetric manner by taking the axis of the conical main body 310 as the center, so that stable blood pumping is facilitated. The top of the blade 330 is provided with a straight edge 331, and the side of the blade 330 is provided with an arc edge 332, so that the damage to blood is reduced as much as possible in the blood pumping process, and the internal components of the blood are kept stable.

The pivot 61 adopts the titanium alloy to make, rotor 60's cylindric magnet steel adopts samarium cobalt magnet to make, and the demagnetization when samarium cobalt magnet has effectively avoided the transmission takes place. The precision bearing 70 is a ceramic bearing, and the wear resistance is improved. The coil winding 50 is wound by a high-conduction enameled wire in a winding mode of a rhombic hollow cup, so that the motor efficiency is improved, the output torque is more stable, the transmission efficiency is higher, and the transmission noise is lower. The impeller 300 is made of light plastic material, so that blood pumping is ensured under the condition of light motor load. The manufacturing material adopted by the heart operation blood pumping motor of the utility model is required to have human body compatibility. The utility model discloses a heart operation pump blood motor packs into the heart after, realizes through external control that pump blood, pump blood pressure, flow, speed all can pass through external controller control in the heart, for the heart function is weaker, and the patient of heart rate pump blood volume not enough provides pump blood power. The utility model discloses a cardiac surgery pump blood motor is applied to medical field, supplies heart medical instrument company, and preparation heart driving system company uses, is that a section improves speed, high power, high efficiency, water-cooling brushless motor.

Compared with the prior art, the utility model discloses a cardiac operation pump blood motor during operation, motor body 100 soaks in heart blood, impeller 300 rotates and promotes blood and pumps out, simultaneously through inlet tube 30 constantly let in the normal saline that is suitable for the human body to motor body 100 inside, normal saline can make the motor cool down through motor body 100 inside, normal saline flows out from apopore 400, make to form positive pressure in motor body 100 inside, blood refluences and gets into the motor during the prevention pump blood, can effectively avoid motor card to die, do benefit to the motor and steadily continue to pump blood, can effectively ensure the treatment to patient; the wire groove 31 is isolated from the water inlet pipe 30, and can prevent the motor drive wire from short circuit.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and any modifications, equivalent replacements, and improvements made within the spirit of the present invention should be included in the scope of the present invention.

Claims (10)

1. The blood pumping motor for the cardiac operation is characterized by comprising a motor body and a protective cover, wherein one end of the motor body is connected with an impeller, the protective cover is arranged on the periphery of the impeller, and the protective cover is fixed with the motor body;

the rear end of the motor body is connected with an outer guide pipe, a water inlet pipe is arranged in the outer guide pipe and is communicated with the inside of the motor body, a water outlet hole is formed in the other end of the motor body, and the water outlet hole is communicated with the inside of the motor body;

the motor body is soaked in heart blood, the impeller rotates to push the blood to be pumped out, and meanwhile, the physiological saline is introduced into the motor body through the water inlet pipe, flows out of the water outlet hole through the inside of the motor body, and forms positive pressure inside the motor body.

2. The heart surgery blood pumping motor of claim 1, wherein the motor body comprises a motor casing, the outer conduit is connected to one end of the motor casing, and the motor casing is made of medical titanium alloy material.

3. The heart surgery blood pumping motor of claim 2, wherein the outer conduit is further provided with a wire groove, the wire groove is isolated from the water inlet pipe, a motor driving wire is arranged in the wire groove, the motor housing is internally provided with a stator, the stator is provided with a coil winding, the motor driving wire is connected with the coil winding, and the motor driving wire is connected with an external power supply for supplying power.

4. The heart surgery blood-pumping motor of claim 3, wherein the motor driving wire comprises three wires and a shielding net, and the wires and the shielding net are externally wrapped by rubber.

5. The blood-pumping motor for cardiac operation as claimed in claim 3, wherein a water inlet front cover is connected to one end of the motor housing, the water inlet pipe extends into the motor housing from the water inlet front cover and is communicated with the motor housing, and the water inlet front cover is positioned in the outer conduit.

6. The blood-pumping motor for cardiac operation as claimed in claim 5, wherein a water inlet guide ring is disposed outside the water inlet front cover, a clamping groove is disposed outside the water inlet front cover, the wire guide groove is clamped in the clamping groove, and one end of the wire guide groove extends into the motor casing.

7. The blood-pumping motor of claim 3, wherein the stator comprises a stator silicon steel sheet, the stator silicon steel sheet is cylindrical, a cylindrical slot is hollowed in the stator silicon steel sheet, and a coil winding is arranged in the cylindrical slot and connected with a motor driving wire.

8. The heart surgery blood pumping motor of claim 7, wherein a rotor is arranged inside the coil winding, the rotor is made of cylindrical magnetic steel, the axis of the rotor is connected with a rotating shaft, and one end of the rotating shaft extends out of one end of the motor shell and is connected with the impeller.

9. The heart surgery blood pumping motor of claim 8, wherein one end of the rotating shaft is connected with a front flange, the outer side of the front flange is connected with a water outlet hole shield, the water outlet hole is arranged on the water outlet hole shield, the front flange is provided with a water through hole, the water through hole is aligned with the water outlet hole, and one end of the rotating shaft penetrates through the water through hole and extends out of the water outlet hole to the outer side of the water outlet hole shield.

10. The blood-pumping motor for cardiac operation as claimed in claim 9, wherein a liquid buffer groove is provided between the water hole shield and the front flange, and the liquid buffer groove is located between the water through hole and the water outlet hole.

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