CN212166259U - Blood transfusion speed adjusting device - Google Patents

Abstract

The utility model relates to a blood transfusion speed adjusting device, including main part, side cap, piston and gasbag, the side cap with the connection can be dismantled to the main part, the main part with be equipped with the pipeline hole with blood transfusion pipeline adaptation between the side cap, one side that the main part was equipped with the pipeline hole is equipped with the adjustment tank, the inflated biggest volume of gasbag is greater than the adjustment tank, the main part be equipped with the passageway of inflating of piston adaptation, the passageway of inflating is equipped with first non return mechanism, the passageway intercommunication of inflating the gasbag, the gasbag is equipped with second non return mechanism. The utility model provides a device which can adjust the blood transfusion speed and can not be automatically changed back and can not scrape the pipeline simultaneously after adjustment.

Description

Blood transfusion speed adjusting device

Technical Field

The utility model relates to a medical appliances technical field, specific theory relates to a blood transfusion speed adjusting device.

Background

The transfusion is a treatment method for infusing blood to a patient through veins, which is widely applied clinically, but when the transfusion is carried out, the phenomena of heavy heart load, bleeding tendency, citric acid poisoning, low blood calcium, high blood potassium, acid-base imbalance, hypothermia caused by cold storage blood and the like can occur if the speed is too high, although the speed regulator on a transfusion tube can regulate the transfusion speed when the transfusion is used, the speed regulator adopts a method that a roller crushes a pipeline on an inclined track to reduce the size of the channel so as to reduce the conveying speed, the pressure is applied to the roller when liquid in the pipeline flows, the roller is ejected, the speed automatically returns to the original state, so the surface of the roller is provided with a tooth surface to increase the friction force so as to keep the roller at the regulated position, but the increase of the friction force is only to reduce the ejection difficulty, the roller is still likely to be ejected, and is very inconvenient, and the acting force of the roller with the tooth surface is concentrated at the tip of, the concentrated stress may hang the pipeline to cause the liquid in the pipeline to flow out, which is very unsafe.

SUMMERY OF THE UTILITY MODEL

In conclusion, in order to overcome the defects of the prior art, the utility model provides a device which can adjust the blood transfusion speed, can not be automatically changed back after adjustment and can not scratch the pipeline.

In order to achieve the above purpose, the utility model provides a following technical scheme: a blood transfusion speed adjusting device is characterized in that: including main part, side cap, piston and gasbag, the side cap with the connection can be dismantled to the main part, the main part with be equipped with the pipeline hole with blood transfusion pipeline adaptation between the side cap, one side that the main part was equipped with the pipeline hole is equipped with the adjustment tank, the inflated biggest volume of gasbag is greater than the adjustment tank, the main part be equipped with the passageway of inflating of piston adaptation, the passageway of inflating is equipped with first non return mechanism, the passageway intercommunication of inflating the gasbag, the gasbag is equipped with second non return mechanism.

The arrangement is that the blood conveying pipeline is clamped between the main body and the side cover, blood flows into the blood conveying pipeline from the blood bag during blood transfusion, the piston is pressed down when the speed needs to be reduced, the piston slides along the inflating channel, the inflating channel is provided with the first non-return mechanism and is communicated with the air bag, so that air in the inflating channel can be squeezed into the air bag, the air bag is inflated and expanded, when the piston is pulled out, the air in the air bag cannot be sucked out due to the fact that the air bag is provided with the second non-return mechanism, the air is sucked from the outside through the first non-return mechanism, the maximum inflated volume of the air bag is larger than the adjusting groove, the air bag can be attached to the blood conveying pipeline during inflation, the air bag inflated and expanded by continuously pressing the piston can be squeezed towards the side which is the softest at the periphery, namely the direction of the blood conveying pipeline, the deformation of the blood conveying pipeline is generated by extrusion, the cross-sectional area of, the gas in the gasbag can not leak naturally, and the unable gasbag that makes in the blood transfusion way recovers the former state, and the speed can not become back automatically after the regulation, and the deformation of blood transfusion way relies on the atmospheric pressure in the gasbag of hugging closely the blood transfusion way, and the even atress of blood transfusion way can not be lacerated blood transfusion way, and is simple to use safe again.

Further, a pressurizing bag is included, and the pressurizing bag surrounds the blood bag.

By the arrangement, when the blood transfusion speed needs to be increased, the pressurizing bag can be inflated, and the inflating and expanding pressurizing bag can extrude the blood bag surrounded by the inflating and expanding pressurizing bag in the expanding process to extrude the blood in the blood bag.

Further, the inflating device further comprises a reversing head and an air guide tube, the air guide tube is communicated with the inflating channel and the pressurizing bag, the reversing head is connected to the bottom of the inflating channel in a rolling mode, the air bag and the air guide tube are located on the same horizontal plane with the inflating channel, an air outlet is formed in the position, located on the horizontal plane, of the reversing head, and the pressurizing bag is provided with a third non-return mechanism.

So set up, the overhead gas outlet of switching-over is towards the gasbag when needs slow down, the gasbag can be leading-in to the air of air when pressing the piston, the head can be turned to when needs accelerate, change the gas outlet to the air duct direction, because the air duct inflates passageway and pressurization bag with the linkage, so the air can be crowded into the pressurization bag, because the pressurization bag has third non return mechanism, so the air in the pressurization bag can not also be sucked out when pulling up the piston, a piston and the cooperation of inflating the passageway just can inflate gasbag and pressurization bag, need not to prepare inflating equipment again, and is very convenient.

Further, first non return mechanism is including separating net and check ball, the switching-over head be equipped with separate net complex open slot, the switching-over head be equipped with and be greater than the check groove of check ball, the check groove bottom is equipped with the diameter and is less than the non return hole of the diameter of check ball, the open slot arrives the distance of check groove bottom is greater than check ball diameter.

So set up, when pressing down the piston, the check ball receives the dual effort towards the non return hole that is brought by gravity and atmospheric pressure, and because the diameter of non return hole is less than the diameter of check ball, so the check ball can not be pushed out, but plug up the non return hole, the air can't flow out from the non return hole, when pulling up the piston, atmospheric pressure produces an ascending effort to the check ball, overcome gravity and push up the check ball, the check ball leaves the non return hole, is blockked before the separation net that inserts the check groove, the air can be followed the non return mouth and flowed to the passageway of inflating through the check groove flow direction, moreover, the steam generator is simple in structure.

Furthermore, a reversing block is arranged at the bottom of the reversing head.

So set up, can hold the switching-over piece with hand and make the switching-over head rotatory, simple structure, convenient to use.

Furthermore, the main part is provided with a limiting plate, the limiting plate is positioned at the bottom of the inflating channel, and the limiting plate and the reversing block are matched to enable the air outlet to be stopped at a position communicated with the air bag or the air guide tube.

So set up, when the first rotation of switching-over was aimed at gasbag or air duct to the gas outlet, the switching-over piece can just withstand the switching-over piece, makes the switching-over piece can't take the switching-over head to continue to rotate to the limiting plate can also block the direction of falling out of the switching-over head, makes it can not fall out and inflates the passageway, simple structure, and is more firm, convenient to use.

Further, the main part is equipped with the exhaust button, the gasbag with the main part be equipped with exhaust button clearance fit's gas vent, the exhaust button is equipped with sealed head, sealed head is greater than the gas vent.

So set up, atmospheric pressure in the gasbag can give the button effort of exhausting one outwards, make the button of exhausting remove outwards, because sealed head is greater than the gas vent, can stop at the gas vent when the button of exhausting removes, plug up the gas vent, it is too much to inflate in the gasbag, lead to blood transfusion pipeline cross-sectional area undersize, when the blood transfusion speed is too slow, can press the button of exhausting, the air in the gasbag will be followed and discharged partly in the gas vent, blood transfusion pipeline will rebound partly, resume a bit blood transfusion speed, moreover, the steam generator is simple in structure, high durability and convenient use.

Further, the exhaust button is provided with a first reset piece, and the first reset piece exerts acting force back to the main body on the exhaust button.

So set up, no matter how big of atmospheric pressure in the gasbag, exhaust button is located which position of main part, and the first piece that resets all can make sealed head hug closely the gas vent, when pressing the exhaust button pressure release, the pine hand will rebound immediately, changes the atmospheric pressure in the control gasbag, and blood transfusion speed is better controlled.

Further, the piston is provided with a second resetting piece, and the second resetting piece exerts acting force back to the main body on the piston.

So set up, only need press the piston when using the piston to inflate, later need not manual pull-up piston, the second resets and just can take the piston back to original position, and then can continue to press down the piston, simple structure, convenient to use.

Further, the second check mechanism and the third check mechanism are flexible plastic pipes.

So set up, gravity and atmospheric pressure can make the plastic tubing hang down when not aerifing, hug closely gasbag and pressurization bag, and the unable inside outflow of following of air, the one end that the plastic tubing can be followed to the air during aerifing blows in, props up the plastic tubing, injects the air gasbag and pressurization bag, simple structure into.

Drawings

Fig. 1 is a schematic structural view of the blood bag according to the embodiment of the present invention.

Fig. 2 is an exploded view of the blood bag according to the embodiment of the present invention.

Fig. 3 is an enlarged view of a portion a of fig. 2.

Fig. 4 is a schematic structural diagram of an embodiment of the present invention.

Fig. 5 is a front cross-sectional view of the blood bag according to the embodiment of the present invention.

Fig. 6 is an enlarged view of a portion B of fig. 5.

Fig. 7 is an exploded view of the structure of the reversing head according to the embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a main body according to an embodiment of the present invention.

The reference numbers in the figures mean: 1. the air pump comprises a main body, 101, an adjusting groove, 102, an inflating channel, 1021, a first check mechanism, 10211, a separation net, 10212, a check ball, 103, a limiting plate, 104, an exhaust button, 1041, a sealing head, 1042, a first resetting piece, 105, an exhaust port, 2, a side cover, 201, a pipeline hole, 3, a piston, 301, a second resetting piece, 4, an air bag, 401, a second check mechanism, 5, a pressurizing bag, 501, a third check mechanism, 6, a reversing head, 601, an air outlet, 602, an open groove, 603, a check groove, 6031, a check hole, 604, a reversing block and 7 an air guide pipe.

Detailed Description

The present embodiment is only an explanation of the present embodiment, and it is not a limitation of the present embodiment, and a person skilled in the art can make modifications without inventive contribution to the present embodiment as needed after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present embodiment.

Referring to the attached drawings, the utility model provides the following technical scheme: a blood transfusion speed adjusting device is characterized in that: including main part 1, side cap 2, piston 3 and gasbag 4, side cap 2 with main part 1 can be dismantled and be connected, main part 1 with be equipped with the pipeline hole 201 with defeated blood vessel way adaptation between the side cap 2, one side that main part 1 was equipped with pipeline hole 201 is equipped with adjustment tank 101, the inflated maximum volume of gasbag 4 is greater than adjustment tank 101, main part 1 be equipped with the passageway 102 of inflating of piston 3 adaptation, the passageway 102 of inflating is equipped with first non return mechanism 1021, the passageway 102 intercommunication of inflating the gasbag 4, gasbag 4 is equipped with second non return mechanism 401.

With the arrangement, the main body 1 and the side cover 2 clamp the blood conveying pipeline in the middle, blood flows into the blood conveying pipeline from a blood bag during blood transfusion, the piston 3 is pressed down when the speed needs to be reduced, the piston 3 slides along the inflating channel 102, the inflating channel 102 is provided with the first non-return mechanism 1021, the inflating channel 102 is communicated with the air bag 4, so that air in the inflating channel 102 can be extruded into the air bag 4, the air bag 4 is inflated and expanded, when the piston 3 is pulled out, the air in the air bag 4 can not be sucked out due to the fact that the air bag 4 is provided with the second non-return mechanism 401, but is sucked from the outside through the first non-return mechanism 1021, the air bag 4 is inflated to be attached to the blood conveying pipeline during the inflating process because the maximum volume of the air bag 4 is larger than the adjusting groove 101, the air bag 4 continuously pressing the piston 3 to be inflated and expanded can be extruded towards the softest surface at the periphery, namely the direction of, the cross-sectional area of the blood conveying pipeline is small, the flow speed is slowed down, due to the existence of the second non-return mechanism 401, gas in the air bag 4 cannot leak naturally, the pressure in the blood conveying pipeline cannot enable the air bag 4 to recover the original shape, the speed cannot automatically change back after adjustment, deformation of the blood conveying pipeline depends on air pressure in the air bag 4 tightly attached to the blood conveying pipeline, the blood conveying pipeline is evenly stressed, the blood conveying pipeline cannot be scratched, and the use is simple and safe.

This embodiment preferably further comprises a pressurizing bag 5, said pressurizing bag 5 surrounding the blood bag.

With the arrangement, when the blood transfusion speed needs to be increased, the pressurizing bag 5 can be inflated, and the inflating and expanding pressurizing bag 5 can press the blood bag surrounded by the inflating and expanding pressurizing bag in the expanding process to extrude the blood in the blood bag.

Preferably, the inflatable air bag further comprises a reversing head 6 and an air duct 7, the air duct 7 is communicated with the inflating channel 102 and the pressurizing bag 5, the reversing head 6 is connected to the bottom of the inflating channel 102 in a rolling manner, the communicating positions of the air bag 4 and the air duct 7 with the inflating channel 102 are located on the same horizontal plane, an air outlet 601 is arranged at the position, located on the horizontal plane, of the reversing head 6, and the pressurizing bag 5 is provided with a third non-return mechanism 501.

According to the arrangement, the air outlet 601 on the reversing head 6 faces the air bag 4 when the speed needs to be reduced, air can be led into the air bag 4 when the piston 3 is pressed, the reversing head 6 can be rotated when the speed needs to be increased, the air outlet 601 is rotated to the direction of the air guide pipe 7, the air guide pipe 7 is connected with the inflating channel 102 and the pressurizing bag 5 in a linkage mode, so that the air can be squeezed into the pressurizing bag 5, the third non-return mechanism 501 exists in the pressurizing bag 5, the air in the pressurizing bag 5 cannot be sucked out when the piston 3 is pulled up, the air can be inflated for the air bag 4 and the pressurizing bag 5 through the cooperation of the piston 3 and the inflating channel 102, inflating equipment does not need to be prepared, and the.

Preferably, in this embodiment, the first check mechanism 1021 includes a net 10211 and a check ball 10212, the direction changing head 6 is provided with an open slot 602 matched with the net 10211, the direction changing head 6 is provided with a check slot 603 larger than the check ball 10212, a check hole 6031 with a diameter smaller than that of the check ball 10212 is provided at the bottom of the check slot 603, and a distance from the open slot 602 to the bottom of the check slot 603 is larger than that of the check ball 10212.

With such an arrangement, when the piston 3 is pressed down, the check ball 10212 is subjected to double acting force towards the check hole 6031 caused by gravity and air pressure, and because the diameter of the check hole 6031 is smaller than that of the check ball 10212, the check ball 10212 is not pushed out, but the check hole 6031 is blocked, air cannot flow out from the check hole 6031, when the piston 3 is pulled up, the air pressure generates an upward acting force on the check ball 10212 to push up the check ball 10212 against gravity, the check ball 10212 leaves the check hole 6031, and is blocked before the partition net 10211 inserted into the check groove 603, and the air flows from the check port to the inflating passage 102 through the check groove 603, so that the structure is simple.

In this embodiment, preferably, the bottom of the reversing head 6 is provided with a reversing block 604.

So set up, can make switching-over head 6 rotatory by holding switching-over piece 604 with hand, simple structure, convenient to use.

Preferably, in this embodiment, the main body 1 is provided with a limiting plate 103, the limiting plate 103 is located at the bottom of the inflation channel 102, and the limiting plate 103 and the reversing block 604 cooperate to stop the air outlet 601 at a position communicated with the air bag 4 or communicated with the air duct 7.

So set up, when the switching-over head 6 rotated to gas outlet 601 and aimed at gasbag 4 or air duct 7, switching-over piece 604 can just withstand switching-over piece 604, makes switching-over piece 604 unable take switching-over head 6 to continue to rotate to limiting plate 103 can also block the direction that falls out of switching-over head 6, makes it can not fall out and inflates passageway 102, simple structure, and is more firm, convenient to use.

Preferably, in this embodiment, the main body 1 is provided with an exhaust button 104, the airbag 4 and the main body 1 are provided with an exhaust port 105 in clearance fit with the exhaust button 104, the exhaust button 104 is provided with a sealing head 1041, and the sealing head 1041 is larger than the exhaust port 105.

So set up, an effort outwards will be given to exhaust button 104 to atmospheric pressure in the gasbag 4, make exhaust button 104 remove outwards, because sealed head 1041 is greater than gas vent 105, can stop at gas vent 105 when exhaust button 104 removes, block up gas vent 105, it is too much to inflate in the gasbag 4, lead to blood transfusion pipeline cross-sectional area undersize, when the blood transfusion speed is too slow, can press exhaust button 104, the air in the gasbag 4 will be followed and partly discharged in gas vent 105, the blood transfusion pipeline will be rebounded partly, resume a bit blood transfusion speed, moreover, the steam generator is simple in structure, high durability and convenient use.

In this embodiment, preferably, the exhaust button 104 is provided with a first reset member 1042, and the first reset member 1042 applies a force to the exhaust button 104 to act on the main body 1.

So set up, no matter how big the atmospheric pressure in the gasbag 4, exhaust button 104 is located which position of main part 1, and first piece 1042 that resets all can make sealed head 1041 hug closely gas vent 105, when pressing exhaust button 104 pressure release, the loose hand will rebound immediately, the atmospheric pressure in the control gasbag 4 of changing, the blood transfusion speed is better controlled.

In this embodiment, the piston 3 is preferably provided with a second restoring member 301, and the second restoring member 301 applies a force to the piston 3, which is away from the main body 1.

So set up, only need press piston 3 when using piston 3 to inflate, later need not manual pull-up piston 3, the second resets 301 and just can take piston 3 back to original position, can continue to press piston 3 next, simple structure, convenient to use.

In this embodiment, preferably, the second check mechanism 401 and the third check mechanism 501 are made of flexible plastic tubes, and the setting is not limited thereto, and the second check mechanism 401 and the third check mechanism 501 may also be made of rubber or other easily deformable materials.

So set up, gravity and atmospheric pressure can make the flexible plastic tubing hang down when not aerifing, hug closely gasbag 4 and pressurization bag 5, and the unable inside outflow of following of air, the one end that the air can follow the flexible plastic tubing during inflation is blown in, props up the flexible plastic tubing, injects the air gasbag 4 and pressurization bag 5, simple structure.

Claims (10)

1. A blood transfusion speed adjusting device is characterized in that: including main part, side cap, piston and gasbag, the side cap with the connection can be dismantled to the main part, the main part with be equipped with the pipeline hole with blood transfusion pipeline adaptation between the side cap, one side that the main part was equipped with the pipeline hole is equipped with the adjustment tank, the inflated biggest volume of gasbag is greater than the adjustment tank, the main part be equipped with the passageway of inflating of piston adaptation, the passageway of inflating is equipped with first non return mechanism, the passageway intercommunication of inflating the gasbag, the gasbag is equipped with second non return mechanism.

2. A blood transfusion speed adjusting apparatus according to claim 1, wherein: also included is a pressurizing bag that surrounds the blood bag.

3. A blood transfusion speed adjusting apparatus according to claim 2, wherein: the inflation bag is characterized by further comprising a reversing head and an air guide tube, the air guide tube is communicated with the inflation channel and the pressurization bag, the reversing head is connected to the bottom of the inflation channel in a rolling mode, the air bag and the air guide tube are located on the same horizontal plane with the inflation channel, the reversing head is located on the horizontal plane and provided with an air outlet, and the pressurization bag is provided with a third non-return mechanism.

4. A blood transfusion speed adjusting apparatus according to claim 3, wherein: first non return mechanism is including separating net and check ball, the switching-over head be equipped with separate net complex open slot, the switching-over head is equipped with and is greater than the check groove of check ball, the check groove bottom is equipped with the diameter and is less than the non return hole of the diameter of check ball, the open slot arrives the distance of check groove bottom is greater than the check ball diameter.

5. A blood transfusion speed adjusting apparatus according to claim 3, wherein: and a reversing block is arranged at the bottom of the reversing head.

6. A blood transfusion speed adjusting apparatus according to claim 5, wherein: the main body is provided with a limiting plate which is positioned at the bottom of the inflating channel, and the limiting plate is matched with the reversing block to enable the air outlet to stop at a position communicated with the air bag or the air guide tube.

7. A blood transfusion speed adjusting apparatus according to claim 1, wherein: the main part is equipped with the exhaust button, the gasbag with the main part be equipped with exhaust button clearance fit's gas vent, the exhaust button is equipped with sealed head, sealed head is greater than the gas vent.

8. A blood transfusion speed adjusting apparatus according to claim 7, wherein: the exhaust button is provided with a first reset piece, and the first reset piece exerts an acting force which is back to the main body on the exhaust button.

9. A blood transfusion speed adjusting apparatus according to claim 1, wherein: the piston is provided with a second resetting piece, and the second resetting piece exerts acting force back to the main body on the piston.

10. A blood transfusion speed adjusting apparatus according to claim 3, wherein: the second check mechanism and the third check mechanism are flexible plastic pipes.

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