CN212383078U

CN212383078U - Blood pump of heart-lung machine with quick pump regulating device

Info

Publication number: CN212383078U
Application number: CN202020272744.XU
Authority: CN
Inventors: 段欣; 刘晋萍; 胡金晓; 刘宁; 张富强
Original assignee: Fuwai Hospital of CAMS and PUMC
Current assignee: Fuwai Hospital of CAMS and PUMC
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2021-01-22
Anticipated expiration: 2030-03-06

Abstract

The utility model relates to a heart-lung machine blood pump with quick pump regulating device, which comprises a pump body, pump body top is equipped with compresses tightly adjust knob, it is connected with the adjusting bolt who runs through and stretch out the pump body to compress tightly adjust knob bottom, adjusting bolt goes up the movable fit and is equipped with the adjusting nut board, adjusting nut board bottom both ends rigid coupling respectively has first slider, be equipped with the second slider that corresponds the contact with first slider on the pump body, be connected with the spring between two second sliders, the pump body both sides outside is equipped with the jam roller through the roller frame, worm wheel and worm are equipped with to the adjusting bolt lower extreme, characterized in that: and scale fixing frames are fixed on two sides of the pump body and the roller frame, an indicating arrow is arranged at one end of each scale fixing frame, and a scale and a pipe diameter mark which are used for marking the size of the pump pipe are arranged on the roller frame. The advantages are that: the tightness of the blood pump can be quickly and accurately adjusted, a large amount of extracorporeal circulation priming time is saved, the extracorporeal circulation time and blood dilution are favorably reduced, and blood consumption is saved; but also can reduce the workload of doctors and strive for time for the rescue of emergency patients.

Description

Blood pump of heart-lung machine with quick pump regulating device

Technical Field

The utility model belongs to the technical field of clinical medical instrument, especially, relate to a heart-lung machine blood pump with quick pump regulating device.

Background

During open-heart surgery extracorporeal circulation, different diameter tubing is usually selected depending on the patient's weight in order to save blood and reduce patient blood dilution. At present, a rolling pump is mostly adopted in an extracorporeal circulation machine, and the working principle is that a pump pipe is extruded in a pump groove so that blood is injected into a membrane oxygenator and finally injected into a patient. Different diameter pump lines need to produce suitable extrusion through manual adjust knob messenger gyro wheel and pump line in the pump groove, and suitable pump line elasticity can reduce the destruction to red blood cell, produces sufficient perfusion flow.

At present, the extracorporeal circulation pipeline system with the corresponding specification and model is selected according to the weight of a patient and the type of an operation before each operation, and the manual adjustment of a knob according to pump pipes with different diameters to achieve the proper extrusion degree is tedious and indispensable conventional work. Therefore, in the clinical work, the extracorporeal circulation priming time is greatly prolonged by repeatedly adjusting the tightness of the blood pump, particularly, the tightness of the blood pump is neglected to be adjusted due to the urgent time during the emergency extracorporeal circulation, and the blood is inevitably damaged and aggravated when the blood pump is excessively tight; if the blood pump is too loose, inaccurate perfusion flow can result. Therefore, the adjustment of the tightness of the blood pump is an important link influencing the quality and the safety of extracorporeal circulation of a patient.

Disclosure of Invention

The utility model provides a heart-lung machine blood pump with a rapid pump regulating device, which can rapidly and accurately regulate the tightness of the blood pump, save a large amount of extracorporeal circulation priming time, reduce the workload of doctors and strive for time for rescuing emergency patients.

The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be:

heart-lung machine blood pump with quick pump regulating device, which comprises a pump body, pump body top is equipped with compresses tightly adjust knob, it runs through and stretches out the adjusting bolt of the pump body to compress tightly adjust knob bottom and be connected with, adjusting bolt goes up the clearance fit and is equipped with the adjusting nut board, adjusting nut board bottom both ends difference rigid coupling has first slider, is equipped with the second slider that corresponds inclined plane sliding contact with first slider in addition on the pump body, be connected with the spring between two second sliders, the pump body both sides outside is equipped with the jam roller through the roller frame, worm wheel and worm, its characterized in that are equipped with to the adjusting bolt lower extreme: the pump is characterized in that scale fixing frames are fixed in the direction of the symmetrical blocking rollers on two sides of the pump body, an indicating arrow is arranged at one end of each scale fixing frame, and scales and pipe diameter marks for marking the size of the pump pipe are arranged on the roll frames on two sides of the pump body respectively.

The utility model discloses can also adopt following technical scheme:

preferably, both sides of one end of the scale fixing frame are provided with indicating arrows.

Preferably, the roller frame is provided with a scale and a pipe diameter mark corresponding to the indication arrow.

The utility model has the advantages and positive effects that: because the above technical scheme is adopted in the utility model, during the extracardiac direct-view operation extracorporeal circulation, when putting into the pump line and wear out around putting into the back from the pipeline embedded groove after pump groove a week through compressing tightly adjust knob, with the hand in the same direction as (anticlockwise) rotate compress tightly adjust knob after, be located planar scale and pipe diameter sign on the jam roller and will be together outside (in) and do translational motion, and scale mount and arrow point on locating the pump body are because the position is fixed, consequently when adjusting 1/2 pump line internal gap to the standard, will form fixed scale, the corresponding standard position of pipe diameter sign and arrow point, can confirm the size and the mark line of pump line this moment. Therefore, the tightness of the blood pump can be quickly and accurately adjusted, a large amount of extracorporeal circulation priming time is saved, the extracorporeal circulation time and blood dilution are favorably reduced, and blood consumption is saved; but also can reduce the workload of doctors and strive for time for the rescue of emergency patients.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a schematic view of the working state of the present invention.

In the figure: 1. a pump body; 2. pressing the adjusting knob; 3. adjusting the bolt; 4. a roller frame; 5. a pump clamp locking tab; 6. adjusting the nut plate; 7. a first slider; 8. a second slider; 9. a spring; 10. blocking the rollers; 11. a scale fixing frame; 12. an arrow is indicated; 13. a scale; 14. marking the pipe diameter; 15. compressing the adjusting screw; 16. a pump tube; 17. a pipeline embedded groove; 18. a pump tank; 19. a worm gear; 20. a worm.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to figures 1-3 of the drawings,

the heart-lung machine blood pump with the rapid pump regulating device comprises a pump body 1, a compression adjusting knob 2 is arranged at the top of the pump body, an adjusting bolt 3 which penetrates through and extends out of the pump body is connected to the bottom of the compression adjusting knob, and an adjusting nut plate 6 is movably matched with the adjusting bolt inside the pump body. The two ends of the bottom of the adjusting nut plate are fixedly connected with first sliding blocks 7 respectively, a second sliding block 8 which is in corresponding contact with the first sliding blocks is arranged on the pump body, the other end of the second sliding block is connected with a spring 9, the lower portion of the first sliding block 7 is provided with an inclined plane, and the contact position of the second sliding block 8 and the first sliding block is provided with an inclined plane matched with the inclined plane of the first sliding block. The outer parts of two sides of the pump body are provided with blocking rollers 10 through roller frames 4, and the lower end parts of the adjusting bolts extending out of the pump body are provided with worm wheels 19 and worms 20. A pump clamp locking piece 5 is further arranged on one side of the pump body, and a pipeline embedded groove 17 is formed in the bottom of the pump clamp locking piece. And the pump body part is provided with a compression adjusting screw 15 which is used for compressing the pump pipe and preventing the pump pipe from falling out of the pump groove 18. And scale fixing frames 11 are fixed on the two sides of the pump body and the roller frames 4 on the two sides of the pump body, one end of each scale fixing frame is provided with an indicating arrow 12, and the roller frames are provided with scales 13 and pipe diameter marks 14 for marking the size of the pump pipe.

Specifically, the two side edges of one end of the scale fixing frame are provided with indicating arrows 12.

Specifically, a scale 13 and a pipe diameter mark 14 corresponding to the indication arrow are arranged on the roller frame.

The utility model discloses a theory of operation does:

referring to fig. 4 of the drawings, a schematic diagram of a display device,

when the pump clamping locking piece 5 is opened, the 1/2 pump pipe 16 is placed in the pipe embedding groove 17, the pump clamping locking piece 5 is placed down, the pump pipe surrounds the pump groove 18 clockwise, penetrates out of the pipe embedding groove 17 at the other end after passing through the compression adjusting screw 15 for a circle, the pump pipe is compressed by rotating the compression adjusting knob 2 clockwise (anticlockwise) with hands, meanwhile, the scale 13 and the pipe diameter mark 14 which are positioned on the upper plane of the roller frame 4 move outwards in a translation mode, and the scale fixing frame 11 and the arrow 12 which are arranged on the pump body 1 are fixed in position, so that a displacement relation is formed. When the 1/2 pump tube internal clearance is adjusted to a standard, a fixed standard position corresponding to the scale, tube diameter indicator and arrow is formed, and the size and marking line of the 1/2 pump tube 16 can be determined.

Firstly, a barrel of water is prepared, one end of a pump pipe 16 with the length of about 3m and the inner diameter of 1/2 (phi 12) is placed into the water barrel, the other end of the pump pipe passes through a pipeline embedded groove 17 and is placed under a compression adjusting screw 15, the pump pipe penetrates out of the pipeline embedded groove at the lower part after surrounding a pump groove 18 for a circle, and the end of the pump pipe is hung on a hanging rod of a heart-lung machine with the height of not less than 800mm (three marks are made at the position of 700/725/750mm of the hanging rod). The adjusting knob 2 is rotated clockwise by hand and is rotated to drive the adjusting bolt 3 to rotate, so that the adjusting nut 6 and the first sliding block 7 connected with the adjusting nut synchronously move downwards. At this time, the inclined surface of the first slide block and the inclined surface of the second slide block 8 form relative movement, so that the first slide block and the second slide block move outwards to form extrusion of the blocking roller 10 on the pump pipe, namely, the gap in the pump pipe is reduced, and the purpose of reducing the flow rate is achieved. Then the power supply of the heart-lung machine is switched on, the lower pump speed is selected to rotate slowly, the pump is stopped after the tube is filled with water, the pump head is manually rotated until the water column is completely and accurately positioned at the highest mark, namely is 750mm higher than the pump head, and whether the water column in the one-minute tube descends at the speed of about 2.5cm or not is detected. If the rate is higher than the speed, the actions are repeated until the speed is reached. Otherwise, adjusting according to the following steps: the adjusting knob 2 is rotated counterclockwise and pressed in a rotating manner by hand, the adjusting bolt rotates, the adjusting nut 6 and the first sliding block 7 connected with the adjusting nut are enabled to move upwards synchronously, the inclined plane of the first sliding block and the inclined plane of the second sliding block 8 form relative movement, and the first sliding block and the second sliding block are enabled to move inwards under the action of the pulling force of the spring, so that the extrusion force of the blocking roller to the pump pipe is reduced, namely, the gap in the pump pipe is increased, and the purpose of increasing the flow is achieved. When the regulating button 2 is rotated repeatedly to regulate the flow rate in the pipe to a point that the water column in a minute pipe is reduced at a rate of about 2.5cm, the size of the pump pipe gap and the marking line of 1/2 can be determined.

The steps of 3/8 and 1/4 pump tube adjustment in the present invention are the same as above.

The embodiments described in the drawings are exemplary only and should not be construed as limiting the invention.

Claims

1. The utility model provides a heart-lung machine blood pump with quick pump regulating device, includes the pump body, pump body top is equipped with compresses tightly adjust knob, it runs through and stretches out the adjusting bolt of the pump body to compress tightly adjust knob bottom and be connected with, adjusting bolt goes up the clearance fit and is equipped with the adjusting nut board, adjusting nut board bottom both ends difference rigid coupling has first slider, is equipped with the second slider that corresponds inclined plane sliding contact with first slider in addition on the pump body, be connected with the spring between two second sliders, the pump body both sides outside is equipped with the jam roller through the roller frame, worm wheel and worm, its characterized in that are equipped with to the adjusting bolt lower extreme: the pump is characterized in that scale fixing frames are fixed in the direction of the symmetrical blocking rollers on two sides of the pump body, an indicating arrow is arranged at one end of each scale fixing frame, and scales and pipe diameter marks for marking the size of the pump pipe are arranged on the roll frames on two sides of the pump body respectively.

2. The heart-lung machine blood pump with a rapid pump adjustment device of claim 1, wherein: and indicating arrows are arranged on two side edges of one end of the scale fixing frame.

3. The heart-lung machine blood pump with a rapid pump adjustment device of claim 1, wherein: and a scale and a pipe diameter mark corresponding to the indication arrow are arranged on the roller frame.