WO2023138704A1 - Ensemble de perfusion automatique à arrêt de liquide et prévention du retour de sang - Google Patents

Ensemble de perfusion automatique à arrêt de liquide et prévention du retour de sang Download PDF

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Publication number
WO2023138704A1
WO2023138704A1 PCT/CN2023/081329 CN2023081329W WO2023138704A1 WO 2023138704 A1 WO2023138704 A1 WO 2023138704A1 CN 2023081329 W CN2023081329 W CN 2023081329W WO 2023138704 A1 WO2023138704 A1 WO 2023138704A1
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WO
WIPO (PCT)
Prior art keywords
liquid
cavity
infusion
pool
liquid seal
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Application number
PCT/CN2023/081329
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English (en)
Chinese (zh)
Inventor
吴水林
Original Assignee
上海协贮智能科技服务有限公司
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Publication of WO2023138704A1 publication Critical patent/WO2023138704A1/fr

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Classifications

    • 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/36—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests with means for eliminating or preventing injection or infusion of air into body

Definitions

  • the invention relates to the technical field of transfusion by effectively utilizing the principles of water seal and static pressure, in particular to an infusion set for automatically stopping liquid and preventing blood return.
  • Water seal that is, water seal, is generally used for sealing low-pressure gas. Specifically, it refers to a liquid column with a certain height in the device to prevent gas from entering the discharge pipe. It is usually realized by a water trap (as shown in Figure 1).
  • Intravenous infusion is the physical principle of using the height of the medicinal liquid (liquid) to form static pressure and atmospheric pressure, and inject the medicinal liquid into the human body.
  • the medicinal liquid in the infusion bottle is affected by the atmospheric pressure and gravity, so that the medicinal liquid flows into the infusion hose to form a water column.
  • the water column pressure atmospheric pressure + static pressure of the medicinal liquid
  • the medicinal liquid in the bottle can smoothly flow into the human vein.
  • the venous pressure is greater than the atmospheric pressure.
  • the infusion bottle should be hung about 50-60 cm above the puncture site to form a certain water column pressure, so that the water column pressure is greater than the venous pressure, so that the infused medicine can flow smoothly into the human vein.
  • the object of the present invention is to provide an infusion set for automatically stopping liquid and preventing blood return.
  • the present invention provides an infusion device for automatically stopping liquid and preventing blood return, which includes a liquid-sealed pool device, a bottle stopper piercer, a drip funnel, a screw connector, an intravenous infusion needle, a flow regulator, an infusion hose and a vent valve; the cork piercer, liquid-sealed pool device, drip funnel, screw connector, and intravenous infusion needle are sequentially communicated through the infusion hose; the infusion hose passes through the flow regulator, and the vent valve is connected to the cork piercer; , liquid seal tank cavity and output nozzle.
  • the liquid medicine in the infusion bottle enters the cavity of the liquid seal pool through the input nozzle of the liquid seal pool device, and the static pressure formed by the liquid medicine in the infusion bottle is stronger than the static pressure formed by the liquid medicine in the cavity of the liquid seal pool due to the existence of atmospheric pressure, the height of the infusion bottle, and the vent valve.
  • the medicinal liquid in the cavity of the liquid-sealed pool normally flows into the output nozzle of the liquid-sealed pool device and smoothly enters the drip funnel and the infusion hose.
  • the static pressure formed by the medicinal liquid in the infusion bottle is stronger than the venous pressure of the human body in the wall of the infusion hose.
  • the liquid medicine liquid can be automatically stored and the static pressure and sealing effect formed by the liquid medicine liquid in the liquid seal pool cavity can be effectively utilized, and the liquid medicine liquid automatically stored in the liquid seal pool cavity can be effectively used
  • the cavity of the liquid-sealed pool makes the static pressure formed by the medicinal liquid in the cavity of the liquid-sealed pool completely equal to the venous pressure of the human body in the wall of the infusion hose, which can prevent the air from entering the vein of the human body after the medicinal liquid in the infusion bottle is transfused.
  • the liquid seal pool device includes a liquid seal body, a liquid seal pool cavity, an input internal pipeline, and an output internal pipeline; the liquid seal pool cavity is disposed inside the liquid seal body, the input internal pipeline is connected to the input nozzle in the liquid seal pool cavity, and the output internal pipeline is connected to the output nozzle in the liquid seal pool cavity.
  • the input inner pipeline and the output inner pipeline are symmetrically arranged around the cavity of the liquid seal pool.
  • the cavity of the liquid-sealed pool is circular; the output nozzle is a convex nozzle.
  • the cavity of the liquid-sealed pool includes a first cavity, a second cavity, a cavity partition and a through pipe in the cavity; the first cavity and the second cavity are separated by the cavity partition, and the cavity internal through pipe is fixed on the cavity partition for communicating the first cavity and the second cavity.
  • the part of the through-tube in the cavity located in the first cavity is the first through-tube
  • the part of the through-tube in the cavity located in the second cavity is the second through-tube
  • the height of the input internal pipeline is 60%-90% of the height of the first cavity
  • the height of the output internal pipeline is 80%-90% of the height of the second cavity
  • the height of the first internal passage is 80%-90% of the height of the first cavity
  • the height of the second internal passage is 60%-90% of the height of the second cavity.
  • the cavity of the liquid-sealed pool is cylindrical.
  • the liquid-sealed body is a liquid-sealed body of transparent soft material.
  • the transparent soft material is made of TPE, or the transparent soft material is medical grade PVC, MT or MD containing plasticizer DEHP.
  • the infusion set for automatic liquid stop and blood return prevention of the present invention can automatically store liquid medicine in the liquid seal pool cavity of the liquid seal pool device without manual interference, and effectively utilize the static pressure and sealing effect formed by the liquid medicine liquid in the liquid seal pool cavity (20), thereby preventing air from entering the human vein after the liquid medicine liquid is transfused, greatly reducing nursing work and reducing doctor-patient disputes;
  • the personnel can directly replace the next infusion bottle to continue the normal infusion, without the need for the nursing staff to manually discharge the excess air remaining in the infusion hose again and repeatedly confirm that there is no air in the infusion hose; after the liquid is automatically stopped, by gently squeezing the liquid seal tank device, the remaining liquid medicine in the cavity of the liquid seal pool can be completely infused, which avoids the waste of medicine liquid, effectively guarantees the treatment effect, greatly improves the quality of care, enhances the patient's trust in the nurses, and effectively promotes the harmonious development of the nurse-patient
  • Fig. 1 is the structural representation of prior art trap
  • Fig. 2 is the first schematic diagram of the embodiment of the infusion set for automatically stopping liquid and preventing blood return of the present invention
  • Fig. 3 is the second schematic diagram of the embodiment of the infusion set for automatically stopping liquid and preventing blood return of the present invention
  • Fig. 4 is the third schematic diagram of the embodiment of the infusion set for automatically stopping liquid and preventing blood return of the present invention
  • Fig. 5 is a side view of the first structure of the liquid-sealed pool device of the embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention
  • Fig. 6 is the sectional view of A-A direction in Fig. 5;
  • Fig. 7 is a perspective view of the first structure of the liquid-sealed pool device of the embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention
  • Fig. 8 is an internal schematic diagram of the first structure of the liquid-sealed pool device of the embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention
  • Fig. 9 is an internal schematic diagram of the second structure of the liquid-sealed pool device of the embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention.
  • Fig. 10 is a front view of the second structure of the liquid-sealed pool device embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention
  • Fig. 11 is a sectional view of A-A direction in Fig. 10;
  • Fig. 12 is the second structure of the liquid-sealed pool device of the embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention stereogram.
  • connection and “connected” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a communication connection, a direct connection, an indirect connection through an intermediary, or an internal connection between two elements or an interaction relationship between two elements.
  • the present invention provides an embodiment of an infusion set that automatically stops liquid and prevents blood return, including a liquid-sealed pool device 1, a bottle stopper puncturer, a drip funnel 3, a screw connector 4, an intravenous infusion needle 5, a flow regulator 6, an infusion hose 7, and a vent valve 8; Regulate the dripping speed of the medicinal solution in the infusion hose 7.
  • the ventilation valve 8 is connected with the cork piercer, and then the air enters the infusion bottle 9 after being filtered by the ventilation valve 8; More specifically, the dropping funnel 3 includes a dosing tee 31 .
  • the cork piercer, dropping funnel 3, screw connector 4, intravenous infusion needle 5, flow regulator 6, infusion hose 7 and ventilation valve 8 can be existing or specially designed according to the patent of the present invention, and no specific limitation is made here.
  • the automatic hemostasis function of the infusion set for automatic hemostasis and blood return prevention of the present invention is realized by the static pressure formed by the atmospheric pressure and the height difference of the liquid seal pool device and the sealing principle of the medicinal liquid in the cavity of the liquid seal pool.
  • the atmospheric pressure, the static pressure generated by the medicinal liquid in the infusion bottle, and the static pressure formed by the medicinal liquid in the liquid seal pool device 1 are greater than the venous pressure of the human body in the wall of the infusion hose 7, and the infusion device that automatically stops liquid and prevents blood return starts to automatically infuse; more specifically, when there is medicinal liquid in the infusion bottle 9 and the medicine in the infusion bottle 9
  • the static pressure formed by the liquid liquid is greater than zero
  • the liquid medicine in the infusion bottle 9 enters the cavity 20 of the liquid seal pool through the input nozzle 201 of the liquid seal pool device 1, and the liquid medicine in the infusion bottle 9 will The static pressure formed by the liquid is stronger than the static pressure formed by the medicinal liquid in the cavity 20 of the liquid-sealed pool, and its pressure makes the medicinal liquid in the cavity 20 of the liquid-sealed pool normally flow into the
  • the static pressure formed by the medicinal liquid in the infusion bottle 9 is stronger than the venous pressure of the human body in the wall of the infusion hose 7.
  • the blood infusion set starts to infuse automatically. That is, the atmospheric pressure, the static pressure generated by the medicinal liquid in the infusion bottle, and the static pressure generated by the medicinal liquid in the cavity 20 of the liquid seal pool are greater than the venous pressure of the human body in the wall of the infusion hose 7; wherein, the pressure refers to the sum of the atmospheric pressure and the static pressure formed by the medicinal liquid in the infusion bottle 9.
  • the atmospheric pressure and the static pressure generated by the medicinal liquid in the cavity 20 of the liquid seal pool 20 are equal to the venous pressure of the human body in the wall of the infusion hose 7, that is, the medicinal liquid is kept in a constant pressure state in the cavity of the liquid seal pool of the liquid seal pool device 1 to prevent air from entering the human vein after the liquid medicinal liquid in the infusion bottle 9 is transfused.
  • anti-bleeding infusion set realizes automatic liquid stop and anti-bleeding. This function is not affected by the composition and purity of the liquid medicine, and can ensure the effect of automatic liquid stop.
  • the atmospheric pressure and the medicinal liquid in the cavity 20 of the liquid seal pool will no longer enter the output nozzle 202 of the liquid seal pool device 1, because the height of the liquid seal pool device 1 and the liquid seal pool cavity 20 of the liquid seal pool device 1 can automatically store the medicinal liquid and effectively utilize the liquid formed in the liquid seal pool cavity 20 Static pressure and sealing function, the liquid medicine liquid automatically stored in the liquid seal pool cavity 20 effectively utilizes the liquid seal pool cavity 20, so that the static pressure formed by the liquid medicine liquid in the liquid seal pool cavity 20 is completely equal to the venous pressure of the human body in the wall of the infusion hose 7, which can prevent air from entering the human vein after the medicine liquid in the infusion bottle is transfused.
  • the medicinal liquid retained in the liquid seal pool device 1 is the liquid seal principle (that is, the water seal principle), that is, it can prevent air from entering the human vein through the liquid seal pool device 1, and can also prevent the blood of the human vein from flowing back to the infusion tube, ensuring the personal safety of the patient.
  • the liquid seal principle that is, the water seal principle
  • the infusion device for automatic liquid stop and blood return prevention of the present invention effectively utilizes the height of the liquid seal pool device to form the liquid medicine liquid in the cavity of the liquid seal pool to form static pressure or buoyancy to create a constant pressure sealing state.
  • the medicine liquid also called medicine liquid
  • the atmospheric pressure and the liquid level depth in the liquid seal pool cavity reach a pressure balance through a certain liquid level depth to form the static pressure of the liquid in the liquid seal pool cavity; the liquid seal pool cavity of the liquid seal pool device can automatically store the liquid medicine liquid.
  • the height of the liquid seal pool device effectively utilizes the static pressure and sealing effect of the liquid medicine liquid in the liquid seal pool cavity to prevent air from entering the human vein after the medicine liquid in the infusion bottle is infused, that is, the liquid static pressure in the infusion bottle is zero.
  • the liquid-sealed pool device of the infusion device for automatically stopping liquid and preventing blood return of the present invention effectively utilizes the effect of the liquid-sealed principle (that is, the water-sealed principle).
  • the liquid-sealed principle that is, the water-sealed principle.
  • the liquid completely flows into the liquid seal pool device and passes through a certain liquid level depth, so that the atmospheric pressure and the liquid level depth in the liquid seal pool device reach a pressure balance and form the static pressure of the liquid seal liquid liquid; at the same time, the height of the liquid seal pool device and the static pressure of the liquid medicine liquid in the cavity of the liquid seal pool (the seal of the liquid medicine liquid formed by gravity pressure) and the venous pressure of the human body in the tube wall of the infusion tube reach a balance state, so the infusion set naturally achieves the function of automatically stopping liquid and preventing blood return.
  • the present invention utilizes a positive liquid seal (also known as a positive liquid seal tank), which is such a device or container, the inside of the container
  • a positive liquid seal also known as a positive liquid seal tank
  • the liquid inlet nozzle extends into the bottom of the liquid storage, and the output nozzle is reserved above the liquid level.
  • the air enters the liquid inlet pipe and uses the pressure difference to press into the liquid storage of the liquid seal pool device, and at the same time enters the output nozzle to discharge.
  • the static pressure of the liquid in the infusion bottle is zero, the inlet pressure is equal to or slightly lower than the outlet pressure, and the depth of the hydrostatic seal inside the positive liquid seal remains unchanged, so as to realize the balance of the inlet and outlet pressures.
  • the liquid seal cell device 1 includes a liquid seal body 10, a liquid seal cell cavity 20, an input inner pipeline 30, and an output inner pipeline 40;
  • the input inner pipeline 30 and the output inner pipeline 40 are symmetrically arranged around the cavity 20 of the liquid seal pool; preferably, the cavity 20 of the liquid seal pool is circular, and the output nozzle 202 is a convex nozzle, which facilitates the medicinal liquid to enter the output inner pipeline 40 through the output nozzle 202 .
  • the cavity 20 of the liquid-sealed pool includes a first cavity 21 , a second cavity 22 , a cavity partition 23 and a through-pipe 24 in the cavity; wherein, the first cavity 21 and the second cavity 22 are separated by the cavity partition 23 , and the through-pipe 24 in the cavity is fixed on the cavity partition 23 for communicating the first cavity 21 and the second cavity 22 .
  • the part of the inner tube 24 located in the first cavity 21 is the first inner tube 241
  • the part of the cavity inner tube 24 located in the second cavity 22 is the second inner tube 242 .
  • the cavity 20 of the liquid-sealed pool is cylindrical, and of course, it may also be in other shapes, which are not specifically limited here.
  • the height of the input internal pipeline 30 is 60%-90% of the height of the first cavity 21
  • the height of the output internal pipeline 40 is 80%-90% of the height of the second cavity 22
  • the height of the first internal communication pipe 241 is the height of the first cavity 21.
  • the height of the second inner tube 242 is 60%-90% of the height of the second cavity 22.
  • the liquid-sealed body 10 is a liquid-sealed body of a transparent soft material, specifically, the transparent soft material is made of TPE, or the transparent soft material is medical-grade PVC, MT or MD containing plasticizer DEHP. Since the liquid seal body 10 is a liquid seal body made of a transparent soft material, after the liquid is automatically stopped, by gently squeezing the liquid seal pool device, the remaining medicinal liquid in the cavity of the liquid sealed pool can be completely infused, which avoids the waste of medicinal liquid, effectively guarantees the therapeutic effect, greatly improves the quality of care, enhances the patient's trust in the nursing staff, and effectively promotes the harmonious development of the nurse-patient relationship.
  • the infusion device for automatic liquid stop and anti-blood return of the present invention can still retain part of the liquid in the liquid-sealed cavity without manual interference, thereby preventing air from entering the human vein after the liquid is infused, greatly reducing nursing work and reducing disputes between doctors and patients; at the end of each infusion, the nurse can directly replace the next infusion bottle to continue the normal infusion, and there is no need for the nurse to manually discharge the excess air in the infusion hose for a second time and repeatedly confirm that there is no air in the infusion hose; , the remaining medicinal liquid in the liquid-sealed cavity can be completely infused, avoiding the waste of medicinal liquid, effectively ensuring the therapeutic effect, greatly improving the quality of care, enhancing the trust of patients in nursing staff, and effectively promoting the harmonious development of nurse-patient relationship.

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Emergency Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

L'invention concerne un ensemble de perfusion automatique à arrêt de liquide et prévention du retour de sang, comprenant un dispositif de cellule d'arrêt de liquide (1), une pointe de bouchon de bouteille, une soupape d'évacuation (8), une chambre compte-gouttes (3), un connecteur à vis (4), une aiguille de perfusion intraveineuse (5), un régulateur de débit (6) et un tube de perfusion flexible (7). Une cavité de cellule d'étanchéité liquide (20) du dispositif de cellule d'étanchéité liquide (1) peut automatiquement stocker un liquide médicinal, former efficacement une pression statique et obtenir un effet d'étanchéité au moyen du liquide médicinal dans la cavité de cellule d'étanchéité liquide pour empêcher l'air de pénétrer dans une veine humaine après la fin de la perfusion du liquide médicinal dans le flacon de perfusion (9), c'est-à-dire que la pression statique du liquide dans le flacon de perfusion (9) est nulle, et la pression atmosphérique, la pression statique du liquide dans la cavité de la cellule d'étanchéité (20) et la pression veineuse humaine dans la paroi du tube flexible de perfusion (7) sont maintenues à une pression constante, de sorte que l'ensemble de perfusion remplit les fonctions d'arrêt automatique du liquide et de prévention du retour du sang. À la fin de chaque perfusion, il n'est pas nécessaire qu'une infirmière confirme à plusieurs reprises et retire manuellement l'excès d'air restant dans le tube flexible de perfusion (7), ce qui réduit considérablement la charge de travail de l'infirmière. Après l'arrêt automatique du liquide, le dispositif de cellule d'étanchéité (1) est doucement pressé à l'emplacement de la cavité, de sorte que le liquide médicinal restant dans la cavité de la cellule d'étanchéité (20) peut être complètement infusé, améliorant ainsi la qualité des soins infirmiers.
PCT/CN2023/081329 2022-01-20 2023-03-14 Ensemble de perfusion automatique à arrêt de liquide et prévention du retour de sang WO2023138704A1 (fr)

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CN202210068650.4 2022-01-20
CN202210068650.4A CN114247006B (zh) 2022-01-20 2022-01-20 一种自动止液及防回血的输液器

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Cited By (2)

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CN114247006A (zh) * 2022-01-20 2022-03-29 上海协贮智能科技服务有限公司 一种自动止液及防回血的输液器
CN117159840A (zh) * 2023-11-03 2023-12-05 吉林大学 基于自动泄压进行气泡滤除的精密输液器

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CN101057982A (zh) * 2007-05-30 2007-10-24 张幼禽 自封闭安全输液器
CN201085818Y (zh) * 2007-10-11 2008-07-16 苏鹏 设有防回血液封筒的一次性输液器
CN101985054A (zh) * 2010-12-15 2011-03-16 广东康尔美医疗器械有限公司 一种防回血精密过滤输液器
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114247006A (zh) * 2022-01-20 2022-03-29 上海协贮智能科技服务有限公司 一种自动止液及防回血的输液器
CN114247006B (zh) * 2022-01-20 2024-02-20 上海协贮智能科技服务有限公司 一种自动止液及防回血的输液器
CN117159840A (zh) * 2023-11-03 2023-12-05 吉林大学 基于自动泄压进行气泡滤除的精密输液器
CN117159840B (zh) * 2023-11-03 2024-01-05 吉林大学 基于自动泄压进行气泡滤除的精密输液器

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