WO2006026904A1 - A disposal safty infusion device - Google Patents

A disposal safty infusion device Download PDF

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Publication number
WO2006026904A1
WO2006026904A1 PCT/CN2005/000984 CN2005000984W WO2006026904A1 WO 2006026904 A1 WO2006026904 A1 WO 2006026904A1 CN 2005000984 W CN2005000984 W CN 2005000984W WO 2006026904 A1 WO2006026904 A1 WO 2006026904A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
floating body
infusion set
disposed
set according
Prior art date
Application number
PCT/CN2005/000984
Other languages
French (fr)
Chinese (zh)
Inventor
Jihan Cai
Original Assignee
Jihan Cai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN 200420082693 external-priority patent/CN2732263Y/en
Priority claimed from CN 200420082692 external-priority patent/CN2732258Y/en
Application filed by Jihan Cai filed Critical Jihan Cai
Priority to CNB2005800301949A priority Critical patent/CN100534543C/en
Publication of WO2006026904A1 publication Critical patent/WO2006026904A1/en

Links

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
    • A61M5/36—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
    • A61M5/40—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 using low-level float-valve to cut off media flow from reservoir
    • 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
    • A61M5/1411—Drip chambers
    • 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
    • A61M5/162—Needle sets, i.e. connections by puncture between reservoir and tube ; Connections between reservoir and tube
    • 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
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16886—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body for measuring fluid flow rate, i.e. flowmeters
    • A61M5/1689—Drip counters
    • 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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/28—Clamping means for squeezing flexible tubes, e.g. roller clamps
    • A61M39/286—Wedge clamps, e.g. roller clamps with inclined guides
    • A61M39/287—Wedge formed by a slot having varying width, e.g. slide clamps

Definitions

  • the invention relates to an infusion device for intravenous infusion to a clinical patient in the field of medical and health, and more particularly to a mechanical control flow which can automatically close an infusion line during intravenous infusion to prevent air from entering a patient.
  • a safe infusion set to achieve infusion safety.
  • the object of the present invention is to provide a mechanically controlled flow disposable safety infusion device which automatically closes the infusion line when the infusion bottle is switched and near the end of the infusion to prevent air from entering the patient to achieve infusion safety.
  • the present invention provides a mechanically controlled flow disposable safety infusion device, comprising a bottle needle, a drip bucket, a hose, a liquid medicine filter and an intravenous infusion needle arranged in sequence, wherein the hose is in the hose
  • the jacket is provided with a flow regulator for controlling the flow, wherein at least a safety mechanism is provided in the dripper and/or between the dripper and the hose, the safety mechanism is closed when the infusion bottle and/or the infusion is nearly finished Prevent air from entering the hose and into the patient.
  • the safety mechanism comprises a casing and a floating body located in the casing, and the floating body is raised and lowered as the chemical liquid in the casing increases or decreases.
  • the housing of the safety mechanism is integrally formed with the dropper or separately.
  • the housing includes at least one chemical liquid inlet portion and at least one chemical liquid outlet portion.
  • at least one limiting member is disposed in the housing to limit the lifting range of the floating body in the housing.
  • At least a sealing member is disposed between the medical liquid outlet portion in the casing and the floating body.
  • the floating body is embedded in the housing and is not rotatable relative to the housing.
  • At least one groove/bump is disposed in the housing, and at least one protrusion/groove corresponding to the groove/bump is disposed on the floating body, by means of the cooperation of the protrusion and the groove
  • the floating body can be embedded in the housing in a movable manner up and down.
  • the lower end of the floating body is provided with a sealing member, and the sealing member is a tapered soft cone.
  • the liquid medicine outlet portion of the casing is provided with a sealing member, and a through hole is arranged in the middle of the sealing member, and the floating body is placed above the sealing member.
  • the middle of the seal is thinner than the circumference.
  • the lower end of the housing is provided with a connecting member, and the connecting member has a through hole for circulating the chemical liquid, and the connecting member is protruded from the liquid medicine outlet portion of the housing.
  • the connecting member is integrally formed with the housing.
  • a sealing film is disposed under the floating body.
  • a concave portion is disposed between the floating body and the sealing film.
  • the sealing film and the concave portion are integrally formed to form a closet.
  • the distance between the limiting member and the sealing member is about 1.5 times or more of the height of the floating body
  • an alarm device is disposed outside the housing, the alarm device includes a photosensitive clip, and the photosensitive device A semi-circular symmetrical position of the clips respectively fixes a spotlight and a photosensitive tube, and the spotlight and the photosensitive tube are connected to an alarm box, the alarm box is powered on, and the call switch of the patient bed is turned on.
  • the safety infusion device further comprises a medicinal member which is arranged on the hose, and two sealing members having a through hole in the middle are arranged in parallel at the chemical liquid outlet portion of the casing, the floating body It is freely rotatable between the two seals.
  • an infusion catheter may be disposed between the bottle needle and the dripper.
  • the mechanical flow control one-time use safety infusion device of the present invention the floating body therein rises and falls with the increase and decrease of the liquid medicine in the housing, and when the liquid medicine is not dropped, the floating body will The liquid medicine outlet of the housing is closed to prevent air from entering the hose, thereby effectively ensuring the safety of the infusion. Therefore, the mechanical flow control single-use safety infusion device of the invention does not require the patient and the nursing staff to pay close attention to the end of the infusion.
  • the infusion set can automatically close the infusion line by means of the floating body in the safety mechanism to prevent air bubbles from entering. The patient's veins, while greatly reducing the stress of the medical staff.
  • Embodiment 1A is a schematic view showing the structure of Embodiment 1 of a mechanically controlled flow infusion safety inhaler according to the present invention
  • FIGS. 1B and 1C are schematic structural views showing other different floating bodies in Embodiment 1 of the mechanical flow control single-use safety infusion device of the present invention.
  • Figure ID is a schematic view showing the structure of Embodiment 2 of the mechanical flow control single-use safety infusion device of the present invention
  • FIG. 2A is a schematic view showing the structure of the casing and the dripper of the embodiment 3 of the mechanical flow control single-use safety infusion device of the present invention
  • 2B is a schematic structural view showing another form of the housing and the dripper of the embodiment 3 of the mechanical flow control single-use safety infusion device of the present invention
  • 2C is a schematic structural view showing the housing and the dripper of the embodiment 4 of the mechanical flow control single-use safety infusion device of the present invention
  • FIG. 3 is a schematic structural view showing another form of the housing and the drip chamber of the embodiment 4 of the mechanical flow control single-use safety infusion device of the present invention
  • FIG. 4 is a schematic structural view of Embodiment 5 of a mechanically controlled flow disposable safety infusion device according to the present invention
  • FIG. 5 is a schematic structural view of Embodiment 6 of a mechanically controlled flow disposable safety infusion device according to the present invention
  • Embodiment 6 is a schematic structural view showing still another form of Embodiment 6 of the mechanical flow control single-use safety infusion device of the present invention.
  • FIG. 8 is a schematic structural view showing still another form of Embodiment 6 of the mechanical flow control single-use safety infusion device of the present invention
  • 9 is a schematic cross-sectional view of a connector for a mechanically controlled flow disposable safety infusion set according to the present invention
  • FIG. 10 is a cross-sectional view showing a close-fitting member of a mechanically controlled flow disposable safety infusion device according to the present invention
  • FIG. 12 is a schematic cross-sectional view of a dripper for a mechanically controlled flow disposable safe infusion set according to the present invention
  • FIG. 13 is a mechanically controlled flow disposable safe infusion set according to the present invention
  • FIG. 14B are schematic cross-sectional views showing the housing of the mechanically controlled flow disposable safety infusion set of the present invention, showing the grooves provided therein, wherein FIG. 14B is a cross-sectional view taken along line AA of FIG. 14A.
  • 15A, 15B are schematic cross-sectional views showing the housing of the mechanically controlled flow disposable safety infusion device, showing another recess disposed therein, wherein FIG. 15B is a cross-sectional view taken along line AA of FIG. 15A;
  • Figure 15C is an enlarged view of a portion B in Figure 15A;
  • FIG. 16A and 16B are schematic cross-sectional views showing another housing of the mechanically controlled flow disposable safety infusion device, showing the projections disposed therein, wherein FIG. 16B is a cross-sectional view taken along line A-A of FIG. 16A;
  • FIGS. 18A and 18B are views of the present invention.
  • FIG. 19A and 19B are schematic views showing the structure of still another floating body of the mechanically controlled flow disposable safety infusion device, showing a groove provided on the outer side thereof, wherein FIG. 19B is a cross-sectional view taken along line A-A in FIG. 19A;
  • FIGS. 20A and 20B are schematic cross-sectional views showing still another floating body of the mechanically controlled flow disposable safety infusion device, showing a groove provided on the outer side thereof, wherein Fig. 20B is a cross-sectional view taken along line A-A in Fig. 20A;
  • Figure 21 is a schematic view showing the integral member, the drip bucket and the housing integrally formed by the present invention.
  • 22 is a schematic structural view of Embodiment 7 of a mechanically controlled flow disposable safety infusion set according to the present invention
  • 22A is a schematic structural diagram of an alarm device according to Embodiment 7 of the present invention
  • Figure 23 is a schematic view showing the structure of Embodiment 8 of the mechanical flow control single-use safety infusion set of the present invention.
  • Figure 24 is a schematic illustration of a further embodiment of a mechanically controlled flow disposable safety infusion set of the present invention. detailed description
  • the present invention relates to a mechanical flow control single-use safety infusion device, which comprises a bottle insertion needle 1, a drip bucket 2, a hose 3, a liquid medicine filter 4 and an intravenous infusion needle 5 which are arranged in sequence.
  • a flow regulator 6 for controlling the flow rate is placed in the jacket of the hose 3, wherein at least one safety mechanism 7 is provided in the drip chamber 2 and/or between the drip bucket 2 and the hose 3, in which the infusion bottle and/or the exchanger are exchanged.
  • the safety mechanism 7 prevents air from entering the hose 3 and into the patient.
  • the safety mechanism 7 includes a housing 71 and a floating body 72 in the housing 71, and the floating body 72 ascends and descends as the liquid medicine in the housing 71 increases or decreases.
  • the casing 71 and the drip bucket 2 are integrally formed, that is, the casing 71 of the safety mechanism is simultaneously the casing of the drip bucket 2.
  • the housing 71 includes at least one chemical liquid inlet portion 712 and at least one chemical liquid outlet portion 713.
  • the chemical liquid outlet portion 713 is provided with a sealing member 711.
  • the sealing member 711 is provided with a through hole 7111 therebetween.
  • the sealing member 711 wherein the middle of the sealing member 711 is thinner than the surrounding portion, which may be a smooth transition therebetween, or may be a step transition in the present embodiment, and has a plane in the middle, the sealing member is made of a soft and elastic material.
  • the shield should meet the hygiene requirements.
  • the diameter of the floating body 72 above the sealing member 711 should be smaller than the diameter of the housing 71 to ensure that the floating body 72 is freely rotatable within the housing, and the sealing member 711 can be fixed to the chemical discharge portion 713 by gluing or integral molding.
  • the mechanically controlled flow disposable safety infusion device of the present invention comprises a sealing member 711 and a floating body 72 directly disposed at the bottom of the housing 71 to form a liquid level controlled safety mechanism 7, and the safety mechanism controlled by the liquid level can effectively prevent At the end of the infusion or bottle infusion, air enters the patient to avoid danger.
  • the infusion bottle rubber stopper or the infusion bag causes the floating body 72 in the safety mechanism 7 to float in the housing 71.
  • the liquid medicine in the housing 71 enters the hose through the through hole 7111 of the sealing member 711 and enters the patient.
  • the floating body 72 decreases as the liquid medicine in the casing decreases.
  • the floating body 72 falls on the plane of the sealing member 711, and the gravity of the floating body and the negative pressure in the infusion tube are utilized.
  • the through hole of the seal 711 is closed to block the air in the dripper and cannot enter the hose 3, thereby ensuring the safety of the infusion.
  • the shape of the floating body is not limited to the circular shape shown in FIG. 1A, and may be other suitable shapes, such as shown in FIGS. 1B and 1C, as long as the floating body falls on the plane of the sealing member.
  • the through hole of the seal can be closed to ensure that air cannot enter the hose.
  • An infusion catheter 12 shown in Figure 24 can also be placed between the insertion needle and the dripper.
  • the mechanical flow control single-use safety infusion device of the invention can effectively realize the purpose of safe infusion, and can effectively prevent air bubbles from entering the patient when the patient and the nursing staff pay close attention to the end of the infusion.
  • the veins while greatly reducing the stress of the medical staff.
  • the structure of this embodiment is basically the same as that of the above embodiment, and the only difference is that the housing of the safety mechanism and the drip bucket in this embodiment are separated, and the structure is the same, and will not be described in detail.
  • the chemical liquid inlet portion 712 of the housing 71 of the safety mechanism can be used to seal the connection hose 8
  • the chemical liquid outlet portion 713 can be used to seal the connection hose 3, that is, at the upper end through the hose 8 and The dripper 2 is in communication and the lower end is in communication with the hose 3. Therefore, the infusion set of the present embodiment can also achieve the purpose of safe infusion.
  • the liquid chemical inlet portion 712 of the above casing 71 can also be directly sealed with the drip bucket 2, as shown in Fig. 3, without the need of the hose 8, thereby reducing the cost and also achieving the purpose of safe infusion.
  • a sealing film 721 is disposed under the floating body 72.
  • the diaphragm is made of latex or a soft and elastic material, and the thinner the better, and the material should meet the hygienic requirements.
  • the sealing membrane 721 can be fixed to the floating body 72 by means of an embedded manner; the outer diameter of the floating body 72 should be smaller than the housing 71 The inner diameter of 005 000984 allows it to rotate freely within the housing.
  • a connecting member 714 is disposed at the lower end of the housing 71.
  • the connecting member 714 has a through hole for the flow of the liquid.
  • the connecting member 714 protrudes from the liquid discharging portion 713 of the housing 71.
  • the connector 714 is fixed to the bottom of the housing 71 by gluing or integral molding.
  • the mechanically controlled flow disposable safety infusion device of the present invention comprises a raised connecting member 714 directly disposed at the bottom of the housing 71, a floating body 72 and an elastic sealing diaphragm 721 embedded in the floating body to constitute a liquid level control safety mechanism. 7.
  • the safety mechanism controlled by this liquid level can effectively prevent air from entering the patient at the end of infusion or bottle infusion, thus avoiding danger.
  • the needle bottle 1 In use, first insert the needle bottle 1 into the infusion bottle or the infusion bag. After the air in the case is squeezed out, when the liquid in the infusion bottle drops, the specific gravity of the liquid in the dripper, the floating body 72 and The sealing membrane 721 will automatically float upward to make the liquid medicine flow downward, and when the liquid medicine is not dripped, the floating body 72 and the diaphragm 721 will decrease as the liquid level of the chemical liquid drops, until the floating body 72 is embedded.
  • the diaphragm 721 falls on the protruding connecting member 714, and the through hole of the protruding connecting member is closed by the gravity of the floating body 72 and the negative pressure in the duct and the diaphragm 721 embedded in the floating body, blocking the air in the shell. In the body, it is impossible to enter the hose 3, thus ensuring the safety of the infusion.
  • housing 71 of the safety mechanism and the drip bucket 2 in this embodiment may be integrally formed, as shown in Fig. 2A, or may be separately arranged, as shown in Fig. 2B and Fig. 3.
  • the structure of the embodiment is basically the same as that of the above embodiment, and the difference is only that the sealing mechanism of the safety mechanism in the embodiment is different from the floating body, and the structural similarities are not described in detail.
  • a sealing member is embedded in the lower end of the floating body 72, for example, a tapered soft cone head 722 made of latex or elastic soft material, and the material should be hygienic. Claim.
  • the outer diameter of the floating body 72 should be smaller than the inner diameter of the housing 71 and can be freely rotated within the cavity of the housing 71.
  • the soft cone The head 722 can be directly inserted into the chemical discharge portion 713 of the housing 71, thereby preventing air from entering the hose 3.
  • the bottom portion of the housing 71 may be chamfered at the contact portion M with the taper head 722; and in order to insert the cone head 722 more tightly into the housing
  • the chemical liquid outlet portion 713 can improve the smoothness of the contact between the bottom portion of the casing 71 and the taper head, thereby ensuring that air does not enter the hose 3.
  • the housing 71 of the safety mechanism in FIG. 2C and the drip bucket 2 are integrally formed; and the housing 71 and the drip bucket 2 may also be provided separately, as shown in FIGS. 3 and 12 and 13.
  • the safety mechanism further includes a connecting member 714'.
  • One end of the connecting member 714' is sealingly connected to the liquid medicine outlet portion 713 of the housing 71, and protrudes from the liquid medicine outlet.
  • the other end of the connecting member 714 is radially formed with a stopper 7141, and the two ends of the connecting member 714 are connected to the connecting member 714.
  • the taper is gradually smaller in diameter to facilitate connection of the housing 71 and the hose 3, and the connecting member 714 has a through hole for supplying the chemical liquid from the housing 71 to the hose 3 in the axial direction.
  • a concave portion 725 is formed between the floating body 72 and the sealing film 721.
  • the concave portion 725 and the sealing film 721 are integrally formed to form a sealing member 10, the sealing film 721 and the connecting member. 714, relative.
  • the floating body 72 will fall as the liquid level of the chemical liquid drops until its sealing film 721 falls on the connecting member 714, and the sealing film piece 721 is thin and elastic, and has a concave shape above the sealing film 721.
  • the shape portion 725 provides a deformation space of the sealing film 721, so that when the sealing film 721 falls on the connecting member 714, the elastic sealing film 721 can be slightly deformed according to the connecting member 714, thereby making the floating body 72
  • the combination with the connector 714 is tighter to better ensure that air does not enter the hose 3.
  • the shape of the floating body is not limited to that shown in FIG. 4, and may be other suitable shapes, for example, as shown in FIG. 8, as long as the floating body is closed on the connecting member, the liquid medicine outlet portion can be closed. , to ensure that the air can not enter the hose.
  • the structure of the embodiment is basically the same as that of the above embodiment, and the difference is only that the floating body of the safety mechanism in the embodiment is embedded in the housing and cannot be rotated relative to the housing, and the structure is the same and will not be described in detail.
  • FIG. 5-6, FIG. 14A-15B and FIG. 17A-18B at least two grooves 715 are disposed on the inner side of the housing 71 in the axial direction, and the outer side of the floating body 72 is disposed corresponding to the groove 715.
  • the bump 723 is inserted into the housing 71 by the cooperation of the protrusion 723 and the groove 715, so that the floating body 72 can close the housing 71 more accurately and instantly. Liquid medicine Oral, further improve the safety of infusion.
  • two grooves 715 are symmetrically disposed inside the casing 71, as shown in FIGS. 14A-14B, but are not limited thereto, and may be symmetrically disposed three, four or more.
  • the groove ; of course, the number of the protrusions 723 on the outer side of the floating body 72 is the same as that of the groove 715, and the positions correspond to each other, as shown in Figs. 17A-17B.
  • the recess 715 may be embedded in the housing 71 as shown in FIG. 14B, or may protrude from the housing 71 as shown in FIG. 15B, but is not limited thereto, as long as the bump 723 of the floating body is embedded. After the recess 715 of the housing, the floating body can be easily and smoothly displaced up and down in the housing and can not be rotated relative to the housing.
  • the drip chamber 2 and the housing 71 are separately disposed, that is, the drip chamber 2 - end seal is embedded in the chemical liquid inlet portion 712 of the housing 71, and the inner diameter d of the lower end of the drip chamber 2 can be made smaller than the floating body 72.
  • the outer diameter D ensures that the floating body 72 only stays within the housing 71 and does not enter the dripper 2, thereby ensuring that the floating body 72 is displaced along the recess 715 in the housing.
  • the above-mentioned housing 71 and the floating body 72 are circumferentially restricted by the cooperation of the groove 715 and the protrusion 723, but it is not limited thereto, and other suitable manners may be adopted between the housing and the floating body.
  • the circumferential limit is performed.
  • the protrusion 716 is axially disposed inside the housing 71
  • the groove 724 is correspondingly disposed outside the floating body 72, that is, Between the housing 71 and the floating body 72, the circumferential limit is achieved by the cooperation of the protrusion 716 and the groove 724.
  • two protrusions are symmetrically arranged inside the housing 71, but it is not limited.
  • a limiting member 9 capable of passing the liquid medicine can be embedded in the upper end of the housing 71, as shown in FIG. 5-8 and FIG.
  • the lifting body 72 has a lifting range within the housing 71.
  • the dripper, the limiting member and the housing can be integrally formed, as shown in FIG. 21, when the drip bucket is injection molded, the intermediate protruding portion constitutes the limiting member 9', and the floating body is received in the limiting member 9, The following cavity.
  • the floating body can be slightly larger than the protruding portion of the drip bucket. Because the drip bucket is elastic, it can be easily loaded by external force during assembly. When used, the limiting member 9 can catch the floating body so that it does not float up to the drop. The liquid level on the top of the bucket.
  • an alarm device may be disposed outside the housing 71.
  • a photosensitive clip 717 is sandwiched between the housing 71 and the middle portion of the floating body corresponding to the floating state. 717 can be set for a semi-circular split, the semi-circular symmetrical position of each fixed a spotlight 7171 and a photosensitive tube 7172, the spotlight 7171 and the photosensitive tube 7172 are connected to the alarm box 7173, the alarm box can be connected to the power supply, and the patient is connected
  • the call switch of the bed head at this time, the distance between the limiting member 9 and the sealing member 711 is about 1.5 times or more of the height of the floating body, and preferably 1.5 - 2 times, when the floating body 72 is in a floating state,
  • the floating body 72 can block the light of the spotlight 7171 so that the alarm box 7173 does not work, and when the liquid drop in the casing is completed and the floating body just falls on the sealing member, the light of the spotlight just passes through the
  • the photosensitive clip 717 clamps the lower end of the housing 71 to turn on the power.
  • the floating body floats, the floating body 72 blocks the light of the spotlight 7171, and the alarm box 7173 does not work;
  • the floating body 72 is lowered, a negative pressure is generated due to the self-weight of the liquid medicine in the hose, so that the floating body 72 is tightly pressed against the sealing member 711 of the liquid medicine outlet portion 713 of the casing, so that air does not enter the hose 3, and the medicine is retained in the hose 3.
  • the liquid that is, the pressure on the venous tube is retained, and the blood of the venous tube does not flow backward.
  • the medicine droplets in the housing are immediately alarmed, and the liquid in the hose below the housing retains the liquid medicine, and the patient does not circulate blood for a long time, which can reduce the care of the caregiver.
  • the structure of the embodiment is basically the same as that of the above embodiment, and the structure is the same, and the difference is only that, as shown in FIG. 23, the embodiment further includes a medicated component that can be disposed on the hose. 11 , and the liquid medicine outlet portion 713 of the casing 71 of the safety mechanism is disposed in parallel with two sealing members 71 ⁇ and 711 which are provided with a through hole 7111 in the middle, wherein the middle of the sealing members 711, 711 is thinner than the surrounding portion. It can be a smooth transition, or a step transition in this embodiment, with a flat surface in the middle.
  • the seal is made of a soft and elastic material, and the material should meet the hygienic requirements.
  • the floating body 72 is located between the two seals 711', 711 and is automatically rotatable within the housing 71.
  • the floating body is preferably symmetrically disposed above and below.
  • the bottle insertion needle 1 is first inserted into the infusion bottle rubber stopper or the infusion bag, so that the floating body 72 in the safety mechanism 7 is in a floating state between the upper and lower sealing members 711, 711 in the housing 71, and is closed. 84.
  • Sealing member 711 when the liquid medicine in the infusion bottle drops, the floating body 72 is flushed by the pressure of the lower dropping liquid to lower the liquid medicine, and the floating body 72 decreases as the liquid medicine in the housing decreases.
  • the floating body 72 falls on the plane of the lower seal 711, and the through hole of the lower seal 711 is closed by the gravity of the floating body and the negative pressure in the infusion tube, and the air is blocked in the drip bucket. Inside, it is impossible to enter the hose 3, thus ensuring the safety of the infusion.
  • the drug solution is added from the medicated member 11, and when the amount added is greater than the normal infusion amount, the pressure of the drug solution in the drip chamber is lower than the pressure in the cavity below the movable floating body 72.
  • the patient needs to close the infusion device urgently during the infusion process
  • the invention needs to close the infusion device during the infusion process, and the medical staff can directly inject, thereby greatly injecting Reduced the strained work of medical staff.

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

Abstract

A disposable salty infusion device includes a needle inserted into the bottle, a Morfei's tube, a fluid hose, a fluid filter, and an infusion needle arranged in sequence. A flow adjuster is mounted on the hose to control the flow. A security mechanism is installed in the Morfei's tube, or between the Morfei's tube and the hose. When no fluid drops into the Morfei's tube, the security mechanism prevents air from entering the body of the patient. Hence, the infusion device could automatically seal the fluid hose by a float in the security mechanism to prevent air bubbles from entering the vein of the patient.

Description

—次性安全输液器 力学控流一次性使用安全输液器  -Secondary safety infusion set Mechanical control flow disposable safety infusion set
技术领域 Technical field
本发明涉及一种医疗卫生领域中给临床患者进行静脉输液时用的输液装 置， 更具体地说， 涉及一种在静脉输液时能自动封闭输液管路， 防止空气进 入患者体内的力学控流一次性使用安全输液器， 以达到输液的安全。 背景技术  The invention relates to an infusion device for intravenous infusion to a clinical patient in the field of medical and health, and more particularly to a mechanical control flow which can automatically close an infusion line during intravenous infusion to prevent air from entering a patient. Use a safe infusion set to achieve infusion safety. Background technique
目前对患者进行静脉输液时， 广泛使用一次性使用输液器， 这样防止病 人之间的交叉感染起到了积极的作用。 但是， 使用一次性使用输液器也存在 有不足之处， 即， 目前一次性使用输液器在调换输液瓶和药液注完时没有自 动封闭作用， 若护理人员在此时稍不注意， 就会使空气进入患者的静脉内， 而这些空气进入静脉后会给患者带来极不安全的因素， 同时也给本来就具有 较大工作量的护理人员带来更紧张的工作。 发明内容  At present, when a patient is intravenously infused, a single-use infusion set is widely used, which plays a positive role in preventing cross-infection between patients. However, the use of disposable infusion sets also has its shortcomings, that is, the current one-time use of the infusion set does not have an automatic sealing effect when the infusion bottle and the drug solution are filled. If the caregiver is not paying attention at this time, Air is allowed to enter the patient's veins, and this air can cause extremely unsafe factors to the patient, as well as bring more stressful work to caregivers who already have a large workload. Summary of the invention
本发明的目的是提供一种力学控流一次性使用安全输液器 , 其在调换输 液瓶时和输液将近结束时能自动封闭输液管路， 防止空气进入患者体内， 以 达到输液的安全。  SUMMARY OF THE INVENTION The object of the present invention is to provide a mechanically controlled flow disposable safety infusion device which automatically closes the infusion line when the infusion bottle is switched and near the end of the infusion to prevent air from entering the patient to achieve infusion safety.
为了实现上述目的，本发明提出了一种力学控流一次性使用安全输液器， 包括依序贯通设置的插瓶针、 滴斗、 软管、 药液过滤器及静脉输液针， 其中 在软管外套置有用于控制流量的流量调节器， 其中， 在所述滴斗内和 /或滴斗 与软管之间至少设置一安全机构， 在调换输液瓶和 /或输液将近结束时， 该安 全机构阻止空气进入软管而进入患者体内。  In order to achieve the above object, the present invention provides a mechanically controlled flow disposable safety infusion device, comprising a bottle needle, a drip bucket, a hose, a liquid medicine filter and an intravenous infusion needle arranged in sequence, wherein the hose is in the hose The jacket is provided with a flow regulator for controlling the flow, wherein at least a safety mechanism is provided in the dripper and/or between the dripper and the hose, the safety mechanism is closed when the infusion bottle and/or the infusion is nearly finished Prevent air from entering the hose and into the patient.
较佳地， 所述安全机构包括有一壳体和位于该壳体中的一个浮体， 所述 浮体随着所述壳体内药液的增减而升降。  Preferably, the safety mechanism comprises a casing and a floating body located in the casing, and the floating body is raised and lowered as the chemical liquid in the casing increases or decreases.
较佳地， 所述安全机构的壳体与所述滴斗一体成型或分体设置。  Preferably, the housing of the safety mechanism is integrally formed with the dropper or separately.
较佳地， 所述壳体包括至少一个药液入口部和至少一个药液出口部。 较佳地， 所述壳体内至少设置有一限位件, 以限制该浮体在该壳体内的 升降范围。 Preferably, the housing includes at least one chemical liquid inlet portion and at least one chemical liquid outlet portion. Preferably, at least one limiting member is disposed in the housing to limit the lifting range of the floating body in the housing.
较佳地， 所述壳体内的药液出口部和所述浮体之间至少设置一密封件。 较佳地， 所述浮体嵌置于所述壳体内不可相对壳体转动。  Preferably, at least a sealing member is disposed between the medical liquid outlet portion in the casing and the floating body. Preferably, the floating body is embedded in the housing and is not rotatable relative to the housing.
较佳地， 所述壳体内至少设置一凹槽 /凸块， 所述浮体上至少设置一与所 述凹槽 /凸块对应的凸块 /凹槽， 借助所述凸块和凹槽的配合， 所述浮体可上 下移动地嵌置于所述壳体内。  Preferably, at least one groove/bump is disposed in the housing, and at least one protrusion/groove corresponding to the groove/bump is disposed on the floating body, by means of the cooperation of the protrusion and the groove The floating body can be embedded in the housing in a movable manner up and down.
较佳地， 所述浮体下端设置一密封件， 该密封件为一带锥度的软锥头。 较佳地，所述壳体的药液出口部设置一密封件，该密封件中间设一通孔， 所述浮体置于该密封件上方。  Preferably, the lower end of the floating body is provided with a sealing member, and the sealing member is a tapered soft cone. Preferably, the liquid medicine outlet portion of the casing is provided with a sealing member, and a through hole is arranged in the middle of the sealing member, and the floating body is placed above the sealing member.
较佳地， 所述密封件的中间比四周薄。  Preferably, the middle of the seal is thinner than the circumference.
较佳地， 所述壳体内下端设有一连接件， 该连接件具有一供药液流通的 通孔, 该连接件凸起于所述壳体的药液出口部。  Preferably, the lower end of the housing is provided with a connecting member, and the connecting member has a through hole for circulating the chemical liquid, and the connecting member is protruded from the liquid medicine outlet portion of the housing.
较佳地， 所述连接件与所述壳体一体成型。  Preferably, the connecting member is integrally formed with the housing.
较佳地， 所述浮体下方设有一密封膜片。  Preferably, a sealing film is disposed under the floating body.
较佳地， 所述浮体和所述密封膜片之间设有一凹形部。  Preferably, a concave portion is disposed between the floating body and the sealing film.
较佳地， 所述密封膜片与所述凹形部一体成型构成一密合件。  Preferably, the sealing film and the concave portion are integrally formed to form a closet.
较佳地，所述限位件与所述密封件间的距离约为浮体高度的 1.5倍以上， 在所述壳体外侧设置一报警装置， 所述报警装置包括一只光敏夹， 所述光敏 夹的半圆对称位置各固定一只聚光灯和一只光敏管， 所述聚光灯和光敏管连 接一报警盒， 所述报警盒接通电源， 并接通病人床头的呼叫开关。  Preferably, the distance between the limiting member and the sealing member is about 1.5 times or more of the height of the floating body, and an alarm device is disposed outside the housing, the alarm device includes a photosensitive clip, and the photosensitive device A semi-circular symmetrical position of the clips respectively fixes a spotlight and a photosensitive tube, and the spotlight and the photosensitive tube are connected to an alarm box, the alarm box is powered on, and the call switch of the patient bed is turned on.
较佳地， 所述安全输液器还包括一可设置于软管上的加药件， 在所述壳 体的药液出口部上下平行设置有两片中间具有通孔的密封件， 所述浮体可自 由转动地位于所述两片密封件之间。  Preferably, the safety infusion device further comprises a medicinating member which is arranged on the hose, and two sealing members having a through hole in the middle are arranged in parallel at the chemical liquid outlet portion of the casing, the floating body It is freely rotatable between the two seals.
较佳地， 在所述插瓶针和所述滴斗之间还可设置有输液导管。  Preferably, an infusion catheter may be disposed between the bottle needle and the dripper.
综上所述， 本发明的力学控流一次性使用安全输液器， 其内的浮体随着 所述壳体内药液的增减而升降， 当药液输完不再下滴时， 浮体会将壳体的药 液出口部封闭， 阻止空气进入软管， 从而有效地确保输液的安全性。 因此， 本发明的力学控流一次性使用安全输液器无须病人和护理人员密 切关注输液的结束， 待输液结束时， 输液器可借助于安全机构中的浮体自动 封闭输液管路， 防止空气气泡进入患者的静脉， 同时较大地减轻了医务人员 的紧张工作。 附图说明 In summary, the mechanical flow control one-time use safety infusion device of the present invention, the floating body therein rises and falls with the increase and decrease of the liquid medicine in the housing, and when the liquid medicine is not dropped, the floating body will The liquid medicine outlet of the housing is closed to prevent air from entering the hose, thereby effectively ensuring the safety of the infusion. Therefore, the mechanical flow control single-use safety infusion device of the invention does not require the patient and the nursing staff to pay close attention to the end of the infusion. When the infusion is finished, the infusion set can automatically close the infusion line by means of the floating body in the safety mechanism to prevent air bubbles from entering. The patient's veins, while greatly reducing the stress of the medical staff. DRAWINGS
图 1A为本发明力学控流一^性使用安全输液器的实施例 1的结构示意 图；  1A is a schematic view showing the structure of Embodiment 1 of a mechanically controlled flow infusion safety inhaler according to the present invention;
图 1B、 1C为本发明力学控流一次性使用安全输液器的实施例 1中显示 其它不同浮体的结构示意图；  1B and 1C are schematic structural views showing other different floating bodies in Embodiment 1 of the mechanical flow control single-use safety infusion device of the present invention;
图 ID为本发明力学控流一次性使用安全输液器的实施例 2的结构示意 图；  Figure ID is a schematic view showing the structure of Embodiment 2 of the mechanical flow control single-use safety infusion device of the present invention;
图 2A为本发明力学控流一次性使用安全输液器的实施例 3的壳体与滴 斗一体成型的结构示意图；  2A is a schematic view showing the structure of the casing and the dripper of the embodiment 3 of the mechanical flow control single-use safety infusion device of the present invention;
图 2B为本发明力学控流一次性使用安全输液器的实施例 3的壳体与滴 斗一体成型的另一种形式的结构示意图；  2B is a schematic structural view showing another form of the housing and the dripper of the embodiment 3 of the mechanical flow control single-use safety infusion device of the present invention;
图 2C为本发明力学控流一次性使用安全输液器的实施例 4的壳体与滴 斗分体设置的结构示意图；  2C is a schematic structural view showing the housing and the dripper of the embodiment 4 of the mechanical flow control single-use safety infusion device of the present invention;
图 3为本发明力学控流一次性使用安全输液器的实施例 4的壳体与滴斗 分体设置另一种形式的结构示意图；  3 is a schematic structural view showing another form of the housing and the drip chamber of the embodiment 4 of the mechanical flow control single-use safety infusion device of the present invention;
图 4为本发明力学控流一次性使用安全输液器的实施例 5的结构示意图； 图 5为本发明力学控流一次性使用安全输液器的实施例 6的结构示意图； 图 6为本发明力学控流一次性使用安全输液器的实施例 6的另一种形式 的结构示意图；  4 is a schematic structural view of Embodiment 5 of a mechanically controlled flow disposable safety infusion device according to the present invention; FIG. 5 is a schematic structural view of Embodiment 6 of a mechanically controlled flow disposable safety infusion device according to the present invention; A schematic structural view of another form of Embodiment 6 in which a flow control single-use safety infusion device is used;
图 7为本发明力学控流一次性使用安全输液器的实施例 6的又一种形式 的结构示意图；  7 is a schematic structural view showing still another form of Embodiment 6 of the mechanical flow control single-use safety infusion device of the present invention;
图 8为本发明力学控流一次性使用安全输液器的实施例 6的再一种形式 的结构示意图； 图 9为本发明力学控流一次性使用安全输液器的连接件的剖面示意图； 图 10为本发明力学控流一次性使用安全输液器的密合件的剖面示意图； 图 11为本发明力学控流一次性使用安全输液器的限位件的剖面示意图； 图 12为本发明力学控流一次性使用安全输液器的滴斗的剖面示意图； 图 13为本发明力学控流一次性使用安全输液器的壳体的剖面示意图； 图 14A、 14B为本发明力学控流一次性使用安全输液器的壳体的剖面示 意图， 显示其内设置的凹槽， 其中图 14B为图 14A中沿 A-A线的剖视图； 图 15A、 15B为本发明力学控流一次性使用安全输液器的壳体的剖面示 意图， 显示其内设置的另一种凹槽， 其中图 15B为图 15A中沿 A-A线的剖 视图； 8 is a schematic structural view showing still another form of Embodiment 6 of the mechanical flow control single-use safety infusion device of the present invention; 9 is a schematic cross-sectional view of a connector for a mechanically controlled flow disposable safety infusion set according to the present invention; FIG. 10 is a cross-sectional view showing a close-fitting member of a mechanically controlled flow disposable safety infusion device according to the present invention; FIG. 12 is a schematic cross-sectional view of a dripper for a mechanically controlled flow disposable safe infusion set according to the present invention; FIG. 13 is a mechanically controlled flow disposable safe infusion set according to the present invention; FIG. 14A and FIG. 14B are schematic cross-sectional views showing the housing of the mechanically controlled flow disposable safety infusion set of the present invention, showing the grooves provided therein, wherein FIG. 14B is a cross-sectional view taken along line AA of FIG. 14A. 15A, 15B are schematic cross-sectional views showing the housing of the mechanically controlled flow disposable safety infusion device, showing another recess disposed therein, wherein FIG. 15B is a cross-sectional view taken along line AA of FIG. 15A;
图 15C为图 15A中的 B部放大图；  Figure 15C is an enlarged view of a portion B in Figure 15A;
图 16A、 16B为本发明力学控流一次性使用安全输液器的另一种壳体的 剖面示意图， 显示其内设置的凸块， 其中图 16B为图 16A中沿 A-A线的剖 视图；  16A and 16B are schematic cross-sectional views showing another housing of the mechanically controlled flow disposable safety infusion device, showing the projections disposed therein, wherein FIG. 16B is a cross-sectional view taken along line A-A of FIG. 16A;
图 17A、 17B为本发明力学控流一次性使用安全输液器的浮体的结构示 意图， 显示其外侧设置的凸块， 其中图 17B为图 17A中沿 A-A线的剖视图； 图 18A、 18B为本发明力学控流一次性使用安全输液器的另一种浮体的 部分剖面示意图， 显示其外侧设置的凸块， 其中图 18B为图 18A中沿 A-A 线的剖视图；  17A and 17B are structural diagrams of a floating body of a mechanically controlled flow disposable safety infusion device, showing a bump disposed on the outer side thereof, wherein FIG. 17B is a cross-sectional view taken along line AA of FIG. 17A; FIGS. 18A and 18B are views of the present invention; A partial cross-sectional view of another floating body of a mechanically controlled flow disposable safety infusion set, showing a convex portion disposed on the outer side thereof, wherein FIG. 18B is a cross-sectional view taken along line AA of FIG. 18A;
图 19A、 19B为本发明力学控流一次性使用安全输液器的又一种浮体的 结构示意图， 显示其外侧设置的凹槽， 其中图 19B为图 19A中沿 A-A线的 剖视图；  19A and 19B are schematic views showing the structure of still another floating body of the mechanically controlled flow disposable safety infusion device, showing a groove provided on the outer side thereof, wherein FIG. 19B is a cross-sectional view taken along line A-A in FIG. 19A;
图 20A、 20B为本发明力学控流一次性使用安全输液器的再一种浮体的 剖面示意图， 显示其外侧设置的凹槽， 其中图 20B为图 20A中沿 A-A线的 剖视图；  20A and 20B are schematic cross-sectional views showing still another floating body of the mechanically controlled flow disposable safety infusion device, showing a groove provided on the outer side thereof, wherein Fig. 20B is a cross-sectional view taken along line A-A in Fig. 20A;
图 21是本发明限位件、 滴斗与壳体一体成型的示意图;  Figure 21 is a schematic view showing the integral member, the drip bucket and the housing integrally formed by the present invention;
图 22为本发明力学控流一次性使用安全输液器的实施例 7的结构示意 图； 图 22A为本发明实施例 7中的报警装置的结构示意图； 22 is a schematic structural view of Embodiment 7 of a mechanically controlled flow disposable safety infusion set according to the present invention; 22A is a schematic structural diagram of an alarm device according to Embodiment 7 of the present invention;
图 23为本发明力学控流一次性使用安全输液器的实施例 8的结构示意 图；  Figure 23 is a schematic view showing the structure of Embodiment 8 of the mechanical flow control single-use safety infusion set of the present invention;
图 24 为本发明力学控流一次性使用安全输液器的又一实施例的结构示 意图。 具体实施方式  Figure 24 is a schematic illustration of a further embodiment of a mechanically controlled flow disposable safety infusion set of the present invention. detailed description
以下配合附图对本发明的技术方案进行详细说明。  The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.
实施例 1  Example 1
如图 1A所示， 本发明涉及的力学控流一次性使用安全输液器， 包括依 序贯通设置的插瓶针 1、 滴斗 2、 软管 3、 药液过滤器 4及静脉输液针 5 , 在 软管 3外套置有用于控制流量的流量调节器 6， 其中， 在所述滴斗 2内和 /或 滴斗 2与软管 3之间至少设置有一安全机构 7， 在调换输液瓶和 /或输液将近 结束时， 该安全机构 7阻止空气进入软管 3而进入患者体内。  As shown in FIG. 1A, the present invention relates to a mechanical flow control single-use safety infusion device, which comprises a bottle insertion needle 1, a drip bucket 2, a hose 3, a liquid medicine filter 4 and an intravenous infusion needle 5 which are arranged in sequence. A flow regulator 6 for controlling the flow rate is placed in the jacket of the hose 3, wherein at least one safety mechanism 7 is provided in the drip chamber 2 and/or between the drip bucket 2 and the hose 3, in which the infusion bottle and/or the exchanger are exchanged. At the end of the infusion, the safety mechanism 7 prevents air from entering the hose 3 and into the patient.
所述安全机构 7包括有一壳体 71和位于该壳体 71中的一个浮体 72,所 述浮体 72随着所述壳体 71内的药液的增减而升降。 在本实施例中， 所述壳 体 71与滴斗 2为一体成型 ,即安全机构的壳体 71同时为所述滴斗 2的壳体。 所述壳体 71包括至少一个药液入口部 712和至少一个药液出口部 713 ,所述 药液出口部 713设置一密封件 711 , 该密封件 711中间设一通孔 7111 , 上述 浮体 72置于该密封件 711上方，其中密封件 711的中间比四周薄，其间可为 光滑过渡， 亦可如本实施中为阶梯过渡， 中间具有一平面， 该密封件由软质 且具弹性的材质制成， 同时该材盾应符合卫生要求。 密封件 711上方的浮体 72直径应小于壳体 71内的直径， 确保浮体 72在壳体内可自由转动， 且该密 封件 711可通过胶粘或一体成型的方式固定在药液出口部 713。 本发明中的 力学控流一次性使用安全输液器由直接设在壳体 71内底部的密封件 711、浮 体 72构成一液位控制的安全机构 7,利用该液位控制的安全机构可有效防止 在输液换瓶或输液结束时， 空气进入患者体内， 从而避免危险。  The safety mechanism 7 includes a housing 71 and a floating body 72 in the housing 71, and the floating body 72 ascends and descends as the liquid medicine in the housing 71 increases or decreases. In the present embodiment, the casing 71 and the drip bucket 2 are integrally formed, that is, the casing 71 of the safety mechanism is simultaneously the casing of the drip bucket 2. The housing 71 includes at least one chemical liquid inlet portion 712 and at least one chemical liquid outlet portion 713. The chemical liquid outlet portion 713 is provided with a sealing member 711. The sealing member 711 is provided with a through hole 7111 therebetween. Above the sealing member 711, wherein the middle of the sealing member 711 is thinner than the surrounding portion, which may be a smooth transition therebetween, or may be a step transition in the present embodiment, and has a plane in the middle, the sealing member is made of a soft and elastic material. At the same time, the shield should meet the hygiene requirements. The diameter of the floating body 72 above the sealing member 711 should be smaller than the diameter of the housing 71 to ensure that the floating body 72 is freely rotatable within the housing, and the sealing member 711 can be fixed to the chemical discharge portion 713 by gluing or integral molding. The mechanically controlled flow disposable safety infusion device of the present invention comprises a sealing member 711 and a floating body 72 directly disposed at the bottom of the housing 71 to form a liquid level controlled safety mechanism 7, and the safety mechanism controlled by the liquid level can effectively prevent At the end of the infusion or bottle infusion, air enters the patient to avoid danger.
在使用本发明的力学控流一次性使用安全输液器时， 首先将插瓶针 1插 入输液瓶胶塞或输液袋,使安全机构 7中的浮体 72在壳体 71内呈上浮状态， 此时壳体 71内的药液由密封件 711的通孔 7111进入软管进而进入患者体内， 所述浮体 72 随着壳体内药液的减少而下降， 当药液输完不再下滴时， 浮体 72落在密封件 711的平面上， 并借助于浮体的重力和输液管内的负压将密封 件 711的通孔封闭， 将空气阻挡在滴斗内， 而无法进入到软管 3内， 从而确 保输液的安全。 When using the mechanically controlled flow disposable safety infusion set of the present invention, first insert the insertion pin 1 The infusion bottle rubber stopper or the infusion bag causes the floating body 72 in the safety mechanism 7 to float in the housing 71. At this time, the liquid medicine in the housing 71 enters the hose through the through hole 7111 of the sealing member 711 and enters the patient. The floating body 72 decreases as the liquid medicine in the casing decreases. When the liquid medicine is not dropped, the floating body 72 falls on the plane of the sealing member 711, and the gravity of the floating body and the negative pressure in the infusion tube are utilized. The through hole of the seal 711 is closed to block the air in the dripper and cannot enter the hose 3, thereby ensuring the safety of the infusion.
其中， 所述浮体的形状并不局限于图 1A所示的圆形， 其亦可为其它合 适的形状， 例如图 1B、 1C中所示， 只要是当浮体落在密封件的平面上时， 能够将密封件的通孔封闭， 保证空气无法进入软管内即可。 另外还可在插瓶 针与滴斗之间设置一输液导管 12 (如图 24所示）。  The shape of the floating body is not limited to the circular shape shown in FIG. 1A, and may be other suitable shapes, such as shown in FIGS. 1B and 1C, as long as the floating body falls on the plane of the sealing member. The through hole of the seal can be closed to ensure that air cannot enter the hose. An infusion catheter 12 (shown in Figure 24) can also be placed between the insertion needle and the dripper.
综上所述， 本发明的力学控流一次性使用安全输液器能够有效地实现安 全输液的目的， 并在使用时无须病人和护理人员密切关注输液的结束， 就可 有效防止空气气泡进入患者的静脉，同时较大地减轻了医务人员的紧张工作。  In summary, the mechanical flow control single-use safety infusion device of the invention can effectively realize the purpose of safe infusion, and can effectively prevent air bubbles from entering the patient when the patient and the nursing staff pay close attention to the end of the infusion. The veins, while greatly reducing the stress of the medical staff.
实施例 2  Example 2
本实施例的结构与上述实施例基本相同， 其区别仅在于本实施例中的安 全机构的壳体与滴斗是分体设置， 其结构相同之处不再详细描述。 如图 1D 所示， 所述安全机构的壳体 71的药液入口部 712可用来密封连接软管 8, 其 药液出口部 713可用来密封连接软管 3， 即在上端通过软管 8与滴斗 2连通， 而下端与软管 3连通。 因此， 利用本实施例的输液器同样能够实现安全输液 的目的。 当然， 上述壳体 71的药液入口部 712也可直接与滴斗 2密封连接， 如图 3所示， 而不需借助软管 8, 从而降低成本， 且同样可达到安全输液的 目的。  The structure of this embodiment is basically the same as that of the above embodiment, and the only difference is that the housing of the safety mechanism and the drip bucket in this embodiment are separated, and the structure is the same, and will not be described in detail. As shown in FIG. 1D, the chemical liquid inlet portion 712 of the housing 71 of the safety mechanism can be used to seal the connection hose 8, and the chemical liquid outlet portion 713 can be used to seal the connection hose 3, that is, at the upper end through the hose 8 and The dripper 2 is in communication and the lower end is in communication with the hose 3. Therefore, the infusion set of the present embodiment can also achieve the purpose of safe infusion. Of course, the liquid chemical inlet portion 712 of the above casing 71 can also be directly sealed with the drip bucket 2, as shown in Fig. 3, without the need of the hose 8, thereby reducing the cost and also achieving the purpose of safe infusion.
实施例 3  Example 3
本实施例的结构与上述实施例基本相同， 其区别仅在于本实施例中的安 全机构的壳体与浮体的密封方式不同， 其结构相同之处不再详细描述。 如图 2A和 2B所示， 所述浮体 72下方设有一密封膜片 721， 该膜片为乳胶或软且 具有弹性的材质制成， 且越薄越好， 同时该材质应符合卫生要求， 所述密封 膜片 721可通过嵌入的方式固定在浮体 72上；浮体 72的外径应小于壳体 71 005 000984 的内径， 使之可在壳体内自由转动。 所述壳体 71内下端设有一连接件 714， 该连接件 714具有一供药液流通的通孔， 该连接件 714凸起于所述壳体 71 的药液出口部 713 , 本实施例中的连接件 714是通过胶粘或一体成型的方式 固定在壳体 71内的底部。本发明中的力学控流一次性使用安全输液器由直接 设在壳体 71 内底部的凸起的连接件 714、 浮体 72及嵌入浮体的弹性的密封 膜片 721构成一液位控制的安全机构 7， 利用该液位控制的安全机构可有效 防止在输液换瓶或输液结束时， 空气进入患者体内， 从而避免危险。 The structure of the embodiment is basically the same as that of the above embodiment, and the difference is only that the sealing mechanism of the safety mechanism in the embodiment is different from the floating body, and the structural similarities are not described in detail. As shown in FIG. 2A and FIG. 2B, a sealing film 721 is disposed under the floating body 72. The diaphragm is made of latex or a soft and elastic material, and the thinner the better, and the material should meet the hygienic requirements. The sealing membrane 721 can be fixed to the floating body 72 by means of an embedded manner; the outer diameter of the floating body 72 should be smaller than the housing 71 The inner diameter of 005 000984 allows it to rotate freely within the housing. A connecting member 714 is disposed at the lower end of the housing 71. The connecting member 714 has a through hole for the flow of the liquid. The connecting member 714 protrudes from the liquid discharging portion 713 of the housing 71. In this embodiment, The connector 714 is fixed to the bottom of the housing 71 by gluing or integral molding. The mechanically controlled flow disposable safety infusion device of the present invention comprises a raised connecting member 714 directly disposed at the bottom of the housing 71, a floating body 72 and an elastic sealing diaphragm 721 embedded in the floating body to constitute a liquid level control safety mechanism. 7. The safety mechanism controlled by this liquid level can effectively prevent air from entering the patient at the end of infusion or bottle infusion, thus avoiding danger.
在使用时， 首先将插针瓶 1***输液瓶或输液袋， 在挤掉壳体内的空气 后， 当输液瓶内的药液下滴时，借助于滴斗内的药液比重， 浮体 72和密封膜 片 721 会自动上浮， 使药液下流， 而当药液输完不再下滴时， 所述浮体 72 和膜片 721会随着药液的液面下降而下降， 直至浮体 72 内嵌入的膜片 721 落在凸起的连接件 714上,借助于浮体 72的重力和导管内的负压及嵌入浮体 的膜片 721 , 将凸起的连接件的通孔封闭， 将空气阻挡在壳体内， 而无法进 入到软管 3内， 从而确保输液的安全。  In use, first insert the needle bottle 1 into the infusion bottle or the infusion bag. After the air in the case is squeezed out, when the liquid in the infusion bottle drops, the specific gravity of the liquid in the dripper, the floating body 72 and The sealing membrane 721 will automatically float upward to make the liquid medicine flow downward, and when the liquid medicine is not dripped, the floating body 72 and the diaphragm 721 will decrease as the liquid level of the chemical liquid drops, until the floating body 72 is embedded. The diaphragm 721 falls on the protruding connecting member 714, and the through hole of the protruding connecting member is closed by the gravity of the floating body 72 and the negative pressure in the duct and the diaphragm 721 embedded in the floating body, blocking the air in the shell. In the body, it is impossible to enter the hose 3, thus ensuring the safety of the infusion.
其中， 本实施例中安全机构的壳体 71 与滴斗 2可以是一体成型， 如图 2A所示， 也可以是分体设置， 如图 2B和图 3所示。  Wherein, the housing 71 of the safety mechanism and the drip bucket 2 in this embodiment may be integrally formed, as shown in Fig. 2A, or may be separately arranged, as shown in Fig. 2B and Fig. 3.
实施例 4  Example 4
本实施例的结构与上述实施例基本相同， 其区别仅在于本实施例中的安 全机构的壳体与浮体的密封方式不同， 其结构相同之处不再详细描述。 如图 2C和图 3所示， 所述浮体 72下端嵌入一密封件， 例如是一带锥度的软锥头 722,该锥头 722为乳胶或具弹性的软材料制成，同时该材质应符合卫生要求。 浮体 72的外径应小于壳体 71的内径,并可在壳体 71的腔体内自由转动， 当 所述浮体 722随着所述壳体 71内药液的减少而下降时，所述软锥头 722可直 接***所述壳体 71的药液出口部 713， 从而防止空气进入软管 3。 当然， 为 了使锥头 722更容易***壳体的药液出口部 713 , 可以在壳体 71内底部与锥 头 722接触处 M进行倒角处理；而为了使锥头 722更紧密地***壳体的药液 出口部 713 , 可以提高壳体 71内底部与锥头接触处的光洁度， 从而确保空气 不会进入软管 3。 其中图 2C中安全机构的壳体 71与滴斗 2是一体成型； 而壳体 71与滴 斗 2也可是分体设置， 如图 3和图 12、 13所示。 The structure of the embodiment is basically the same as that of the above embodiment, and the difference is only that the sealing mechanism of the safety mechanism in the embodiment is different from the floating body, and the structural similarities are not described in detail. As shown in FIG. 2C and FIG. 3, a sealing member is embedded in the lower end of the floating body 72, for example, a tapered soft cone head 722 made of latex or elastic soft material, and the material should be hygienic. Claim. The outer diameter of the floating body 72 should be smaller than the inner diameter of the housing 71 and can be freely rotated within the cavity of the housing 71. When the floating body 722 is lowered as the liquid medicine in the housing 71 decreases, the soft cone The head 722 can be directly inserted into the chemical discharge portion 713 of the housing 71, thereby preventing air from entering the hose 3. Of course, in order to make the cone head 722 easier to insert into the liquid medicine outlet portion 713 of the housing, the bottom portion of the housing 71 may be chamfered at the contact portion M with the taper head 722; and in order to insert the cone head 722 more tightly into the housing The chemical liquid outlet portion 713 can improve the smoothness of the contact between the bottom portion of the casing 71 and the taper head, thereby ensuring that air does not enter the hose 3. The housing 71 of the safety mechanism in FIG. 2C and the drip bucket 2 are integrally formed; and the housing 71 and the drip bucket 2 may also be provided separately, as shown in FIGS. 3 and 12 and 13.
实施例 5  Example 5
本实施例的结构与上述实施例基本相同， 其区别仅在于本实施例中的安 全机构的壳体与浮体的密封方式不同， 其结构相同之处不再详细描述。 如图 4和图 9、 10所示， 所述安全机构还包括一连接件 714' , 该连接件 714' 的 一端密封连接于壳体 71的药液出口部 713 , 且凸起于药液出口部 713， 另一 端可密封连接软管 3 , 在本实施例中， 该连接件 714， 的外侧中间部分径向形 成有一挡块 7141，， 从挡块 7141， 到连接件 714， 的两端呈直径渐小的锥度， 以方便连接壳体 71和软管 3 , 该连接件 714， 轴向具有一供药液从壳体 71 流向软管 3的通孔。 所述浮体 72和密封膜片 721之间具有一凹形部 725 , 在 本实施例中， 该凹形部 725与密封膜片 721一体成型构成一密合件 10， 密封 膜片 721与连接件 714， 相对。 所述浮体 72会随着药液液面的下降而下降， 直至其密封膜片 721落在连接件 714， 上， 而由于密封膜片 721薄并具有弹 性， 且在密封膜片 721上方具有凹形部 725, 提供了密封膜片 721的变形空 间， 因此当密封膜片 721 落在连接件 714， 上时， 具有弹性的密封膜片 721 可根据连接件 714， 可稍微变形， 从而使浮体 72与连接件 714， 的结合更为 紧密， 更好地保证空气不会进入软管 3内。  The structure of this embodiment is basically the same as that of the above embodiment, and the only difference is that the sealing mechanism of the housing of the safety mechanism in this embodiment is different from that of the floating body, and the structural similarities are not described in detail. As shown in FIG. 4 and FIG. 9 and FIG. 10, the safety mechanism further includes a connecting member 714'. One end of the connecting member 714' is sealingly connected to the liquid medicine outlet portion 713 of the housing 71, and protrudes from the liquid medicine outlet. The other end of the connecting member 714 is radially formed with a stopper 7141, and the two ends of the connecting member 714 are connected to the connecting member 714. The taper is gradually smaller in diameter to facilitate connection of the housing 71 and the hose 3, and the connecting member 714 has a through hole for supplying the chemical liquid from the housing 71 to the hose 3 in the axial direction. A concave portion 725 is formed between the floating body 72 and the sealing film 721. In the embodiment, the concave portion 725 and the sealing film 721 are integrally formed to form a sealing member 10, the sealing film 721 and the connecting member. 714, relative. The floating body 72 will fall as the liquid level of the chemical liquid drops until its sealing film 721 falls on the connecting member 714, and the sealing film piece 721 is thin and elastic, and has a concave shape above the sealing film 721. The shape portion 725 provides a deformation space of the sealing film 721, so that when the sealing film 721 falls on the connecting member 714, the elastic sealing film 721 can be slightly deformed according to the connecting member 714, thereby making the floating body 72 The combination with the connector 714 is tighter to better ensure that air does not enter the hose 3.
其中，所述浮体的形状并不局限于图 4所示，其亦可为其它合适的形状， 例如图 8中所示， 只要是当浮体落在连接件上时， 能够将药液出口部封闭， 保证空气无法进入软管内即可。  The shape of the floating body is not limited to that shown in FIG. 4, and may be other suitable shapes, for example, as shown in FIG. 8, as long as the floating body is closed on the connecting member, the liquid medicine outlet portion can be closed. , to ensure that the air can not enter the hose.
实施例 6  Example 6
本实施例的结构与上述实施例基本相同， 其区别仅在于本实施例中的安 全机构的浮体嵌置于所述壳体内不可相对壳体转动， 其结构相同之处不再详 细描述。 如图 5-6、 图 14A-15B及图 17A-18B所示， 所述壳体 71 内侧沿轴 向设置有至少两道凹槽 715 ,所述浮体 72外侧设置有与所述凹槽 715对应的 凸块 723 , 借助所述凸块 723和凹槽 715的配合， 所述浮体 72可上下移动地 嵌置于所述壳体 71内，从而使浮体 72能更准确即时地封闭壳体 71的药液出 口部， 进一步提高输液的安全性。在本实施例中， 壳体 71内侧是对称地设置 有两道凹槽 715 , 如图 14A-14B所示， 但并不局限于此， 其亦可对称地设置 三道、 四道或更多的凹槽； 当然， 浮体 72外侧的凸块 723的数量与凹槽 715 相同，且位置相互对应，如图 17A-17B所示。其中，所述凹槽 715可如图 14B 所示的嵌入于壳体 71， 亦可如图 15B所示的伸出于壳体 71 , 但并不局限于 此， 只要保证浮体的凸块 723嵌入壳体的凹槽 715后， 浮体在壳体内能方便 顺畅地上下位移且相对壳体不可转动即可。 The structure of the embodiment is basically the same as that of the above embodiment, and the difference is only that the floating body of the safety mechanism in the embodiment is embedded in the housing and cannot be rotated relative to the housing, and the structure is the same and will not be described in detail. As shown in FIG. 5-6, FIG. 14A-15B and FIG. 17A-18B, at least two grooves 715 are disposed on the inner side of the housing 71 in the axial direction, and the outer side of the floating body 72 is disposed corresponding to the groove 715. The bump 723 is inserted into the housing 71 by the cooperation of the protrusion 723 and the groove 715, so that the floating body 72 can close the housing 71 more accurately and instantly. Liquid medicine Oral, further improve the safety of infusion. In this embodiment, two grooves 715 are symmetrically disposed inside the casing 71, as shown in FIGS. 14A-14B, but are not limited thereto, and may be symmetrically disposed three, four or more. The groove; of course, the number of the protrusions 723 on the outer side of the floating body 72 is the same as that of the groove 715, and the positions correspond to each other, as shown in Figs. 17A-17B. The recess 715 may be embedded in the housing 71 as shown in FIG. 14B, or may protrude from the housing 71 as shown in FIG. 15B, but is not limited thereto, as long as the bump 723 of the floating body is embedded. After the recess 715 of the housing, the floating body can be easily and smoothly displaced up and down in the housing and can not be rotated relative to the housing.
在本实施例中， 滴斗 2与壳体 71是分体设置， 即滴斗 2—端密封嵌入壳 体 71的药液入口部 712内， 且可使滴斗 2下端的内径 d小于浮体 72的外径 D, 从而保证浮体 72仅仅停留在壳体 71内， 而不会进入滴斗 2, 进而保证浮 体 72是沿着壳体内的凹槽 715位移。  In the present embodiment, the drip chamber 2 and the housing 71 are separately disposed, that is, the drip chamber 2 - end seal is embedded in the chemical liquid inlet portion 712 of the housing 71, and the inner diameter d of the lower end of the drip chamber 2 can be made smaller than the floating body 72. The outer diameter D ensures that the floating body 72 only stays within the housing 71 and does not enter the dripper 2, thereby ensuring that the floating body 72 is displaced along the recess 715 in the housing.
当然， 上述壳体 71与浮体 72之间是通过凹槽 715与凸块 723的配合来 进行周向限位， 但并不局限于此， 壳体与浮体之间还可采用其它合适的方式 来进行周向限位， 例如， 如图 7-8、 图 16A-16B及图 19A-20B所示， 在壳体 71内侧轴向设置凸块 716, 而在浮体 72外侧对应设置凹槽 724， 即， 壳体 71 与浮体 72之间是通过凸块 716与凹槽 724的配合来进行周向限位，在图中所 示是在壳体 71内侧对称设置二道凸块，但其也不局限于此，其亦可对称地设 置三道、 四道或更多道的凸块。  Of course, the above-mentioned housing 71 and the floating body 72 are circumferentially restricted by the cooperation of the groove 715 and the protrusion 723, but it is not limited thereto, and other suitable manners may be adopted between the housing and the floating body. The circumferential limit is performed. For example, as shown in FIG. 7-8, FIG. 16A-16B, and FIGS. 19A-20B, the protrusion 716 is axially disposed inside the housing 71, and the groove 724 is correspondingly disposed outside the floating body 72, that is, Between the housing 71 and the floating body 72, the circumferential limit is achieved by the cooperation of the protrusion 716 and the groove 724. In the figure, two protrusions are symmetrically arranged inside the housing 71, but it is not limited. Here, it is also possible to symmetrically set three, four or more bumps.
实施例 Ί  Example Ί
在上述实施例的基础上，还可在所述壳体 71上端嵌置有一能通过药液的 限位件 9, 如图 5-8和图 11所示， 通过该限位件 9可限制该浮体 72在壳体 71内的升降范围。 其中， 该滴斗、 限位件与壳体可一体成型， 如图 21所示， 在滴斗注塑成型时， 中间凸出部位构成了限位件 9' , 浮体容置于限位件 9， 以下的腔内。 浮体可比滴斗的凸出部位稍大一点， 因滴斗是有弹性的， 在装 配时可借助外力而方便地装入， 使用时限位件 9， 能卡住浮体， 使其不会上 浮到滴斗上部的药液平面。  On the basis of the above embodiment, a limiting member 9 capable of passing the liquid medicine can be embedded in the upper end of the housing 71, as shown in FIG. 5-8 and FIG. The lifting body 72 has a lifting range within the housing 71. Wherein, the dripper, the limiting member and the housing can be integrally formed, as shown in FIG. 21, when the drip bucket is injection molded, the intermediate protruding portion constitutes the limiting member 9', and the floating body is received in the limiting member 9, The following cavity. The floating body can be slightly larger than the protruding portion of the drip bucket. Because the drip bucket is elastic, it can be easily loaded by external force during assembly. When used, the limiting member 9 can catch the floating body so that it does not float up to the drop. The liquid level on the top of the bucket.
另外， 还可于壳体 71外侧设置一报警装置， 如图 22和 22A所示， 在壳 体 71外并大约对应呈上浮状态的浮体中部位置夹设一只光敏夹 717,光敏夹 717可为^个半圆分体设置，其半圆的对称位置各固定一只聚光灯 7171和一 只光敏管 7172,聚光灯 7171和光敏管 7172连接报警盒 7173 ,报警盒可接通 电源， 并接通病人床头的呼叫开关； 此时， 需使限位件 9与密封件 711间的 距离大约为浮体高度的 1.5倍以上， 并以 1.5 - 2倍为佳， 目的是当浮体 72 呈上浮状态时， 浮体 72能挡住聚光灯 7171光线从而使报警盒 7173不工作， 而当壳体内药液滴完， 浮体恰好落在密封件上时， 聚光灯的光线刚好穿过壳 体照到光敏管上， 从而使报警盒工作。 In addition, an alarm device may be disposed outside the housing 71. As shown in FIGS. 22 and 22A, a photosensitive clip 717 is sandwiched between the housing 71 and the middle portion of the floating body corresponding to the floating state. 717 can be set for a semi-circular split, the semi-circular symmetrical position of each fixed a spotlight 7171 and a photosensitive tube 7172, the spotlight 7171 and the photosensitive tube 7172 are connected to the alarm box 7173, the alarm box can be connected to the power supply, and the patient is connected The call switch of the bed head; at this time, the distance between the limiting member 9 and the sealing member 711 is about 1.5 times or more of the height of the floating body, and preferably 1.5 - 2 times, when the floating body 72 is in a floating state, The floating body 72 can block the light of the spotlight 7171 so that the alarm box 7173 does not work, and when the liquid drop in the casing is completed and the floating body just falls on the sealing member, the light of the spotlight just passes through the casing and shines on the photosensitive tube, thereby making an alarm. Box work.
其使用时，上述光敏夹 717夹住壳体 71下端，接通电源，当浮体上浮时， 浮体 72挡住聚光灯 7171光线， 报警盒 7173不工作； 当输液瓶壳体 71内药 液滴完， 浮体 72下降， 由于软管内药液的自重产生负压， 使浮体 72紧紧压 住壳体的药液出口部 713的密封件 711 ,使空气不会进入软管 3，软管 3内保 留药液，即保留对静脉管的压力，静脉管血液就不会倒流，由于浮体 72下降， 聚光灯的光线穿过壳体 71照到光敏管上， 由于光敏作用， 报警盒开始工作， 发出报警信号， 报警盒内的继电器吸盒导通病人床头的呼叫开关， 护理室即 能收到几号病房的信号。 因此， 本实施中的安全输液器, 在壳体内药液滴完 立即报警， 且在壳体以下的软管保留药液， 病人长时间静脉血不倒流， 可减 去护理员对此的监护。  When it is used, the photosensitive clip 717 clamps the lower end of the housing 71 to turn on the power. When the floating body floats, the floating body 72 blocks the light of the spotlight 7171, and the alarm box 7173 does not work; when the infusion bottle housing 71 is filled with the medicine, the floating body 72 is lowered, a negative pressure is generated due to the self-weight of the liquid medicine in the hose, so that the floating body 72 is tightly pressed against the sealing member 711 of the liquid medicine outlet portion 713 of the casing, so that air does not enter the hose 3, and the medicine is retained in the hose 3. The liquid, that is, the pressure on the venous tube is retained, and the blood of the venous tube does not flow backward. Since the floating body 72 is lowered, the light of the spotlight passes through the housing 71 and shines on the photosensitive tube. Due to the photosensitivity, the alarm box starts to work and an alarm signal is issued. The relay suction box in the alarm box turns on the call switch of the patient's bedside, and the nursing room can receive the signal of the number one ward. Therefore, in the safety infusion device of the present embodiment, the medicine droplets in the housing are immediately alarmed, and the liquid in the hose below the housing retains the liquid medicine, and the patient does not circulate blood for a long time, which can reduce the care of the caregiver.
实施例 8  Example 8
本实施例的结构与上述实施例基本相同，其结构相同之处不再详细描述， 其区别仅在于：如图 23所示，本实施例中还包括一可设置于软管上的加药件 11 ,而在安全机构的壳体 71的药液出口部 713上下平行设置有两片中间设有 通孔 7111的密封件 71 Γ、 711 , 其中密封件 711，、 711的中间比四周薄, 其 间可为光滑过渡， 亦可如本实施中为阶梯过渡， 中间具有一平面， 该密封件 由软质且具弹性的材质制成， 同时该材质应符合卫生要求。所述浮体 72位于 该两片密封件 711'、 711之间, 并可在壳体 71内自动转动， 所述浮体以上下 对称设置为佳。  The structure of the embodiment is basically the same as that of the above embodiment, and the structure is the same, and the difference is only that, as shown in FIG. 23, the embodiment further includes a medicated component that can be disposed on the hose. 11 , and the liquid medicine outlet portion 713 of the casing 71 of the safety mechanism is disposed in parallel with two sealing members 71 Γ and 711 which are provided with a through hole 7111 in the middle, wherein the middle of the sealing members 711, 711 is thinner than the surrounding portion. It can be a smooth transition, or a step transition in this embodiment, with a flat surface in the middle. The seal is made of a soft and elastic material, and the material should meet the hygienic requirements. The floating body 72 is located between the two seals 711', 711 and is automatically rotatable within the housing 71. The floating body is preferably symmetrically disposed above and below.
在使用时， 首先将插瓶针 1***输液瓶胶塞或输液袋， 使安全机构 7中 的浮体 72在壳体 71内的上、 下密封件 711，、 711间呈上浮状态， 封闭上密 84 封件 711，， 当输液瓶内的药液下滴时， 借助于下滴药液的压力冲开浮体 72， 使药液下流，所述浮体 72随着壳体内药液的减少而下降， 当药液输完不再下 滴时，浮体 72落在下密封件 711的平面上，并借助于浮体的重力和输液管内 的负压将下密封件 711的通孔封闭， 将空气阻挡在滴斗内， 而无法进入到软 管 3内， 从而确保输液的安全。 In use, the bottle insertion needle 1 is first inserted into the infusion bottle rubber stopper or the infusion bag, so that the floating body 72 in the safety mechanism 7 is in a floating state between the upper and lower sealing members 711, 711 in the housing 71, and is closed. 84. Sealing member 711, when the liquid medicine in the infusion bottle drops, the floating body 72 is flushed by the pressure of the lower dropping liquid to lower the liquid medicine, and the floating body 72 decreases as the liquid medicine in the housing decreases. When the liquid medicine is not dripped, the floating body 72 falls on the plane of the lower seal 711, and the through hole of the lower seal 711 is closed by the gravity of the floating body and the negative pressure in the infusion tube, and the air is blocked in the drip bucket. Inside, it is impossible to enter the hose 3, thus ensuring the safety of the infusion.
当在输液过程需要紧急加药时， 如图 22所示， 药液从加药件 11加入, 当加入量大于正常输液量时，滴斗内的药液在活动浮体 72以下部位腔内的压 强升高， 当压强大于滴斗内活动浮体 72以上的液体压强时，活动浮体由于上 推力的作用， 即与上密封件 71 Γ 密合， 从而保证了滴斗活动浮体 72以上液 面的稳定， 当滴斗活动浮体 72以下腔内的压强随着药液进入人体而减小， 当 减小到与滴斗内的压强达到平衡时， 活动浮体因失去推力而与上密封件 71 Γ 自动分离， 仍旧恢复到正常的输液状态。  When emergency dosing is required during the infusion process, as shown in Fig. 22, the drug solution is added from the medicated member 11, and when the amount added is greater than the normal infusion amount, the pressure of the drug solution in the drip chamber is lower than the pressure in the cavity below the movable floating body 72. When the pressure is stronger than the liquid pressure above the movable floating body 72 in the dripper, the movable floating body is closely adhered to the upper sealing member 71 作用 due to the action of the upper thrust, thereby ensuring the stability of the liquid level above the drip bucket movable floating body 72, When the pressure in the cavity below the drip-operating floating body 72 decreases as the liquid enters the human body, when the pressure is reduced to be balanced with the pressure in the dripper, the movable floating body is automatically separated from the upper sealing member 71 by the loss of the thrust. Still returning to normal infusion status.
因此， 针对公知技术中病人在输液过程中需紧急加药而必须先关闭输液 器的缺点， 本发明在输液过程中需紧急加药时， 无需关闭输液器， 医务人员 可直接注入， 从而较大地减轻了医务人员的紧张工作。  Therefore, in the prior art, in the prior art, the patient needs to close the infusion device urgently during the infusion process, and the invention needs to close the infusion device during the infusion process, and the medical staff can directly inject, thereby greatly injecting Reduced the strained work of medical staff.
以上所述仅为本发明的具体实施例而已， 不能以此限定本发明实施的范 围； 即大凡依本发明权利要求书所作的任何变化与修改 , 皆属本发明专利保 护的范围。  The above description is only the specific embodiment of the present invention, and the scope of the present invention is not limited thereto; that is, any changes and modifications made by the claims of the present invention are within the scope of the protection of the present invention.

Claims

权 利 要 求 书 Claim
1、 一种力学控流一次性使用安全输液器， 包括依序贯通设置的插瓶针、 滴斗、 软管、 药液过滤器及静脉输液针， 其中在软管外套置有用于控制流量 的流量调节器， 其特征是， 在所述滴斗内和 /或滴斗与软管之间至少设置一安 全机构， 在调换输液瓶和 /或输液将近结束时， 该安全机构阻止空气进入软管 而进入患者体内。 1. A mechanical infusion disposable safety infusion device, comprising a bottle needle, a drip bucket, a hose, a liquid medicine filter and an intravenous infusion needle arranged in sequence, wherein the hose jacket is provided with a flow for controlling flow. a flow regulator, characterized in that at least a safety mechanism is provided in the dripper and/or between the dripper and the hose, the safety mechanism prevents air from entering the hose when the infusion bottle and/or the infusion is nearly finished And enter the patient.
2、如权利要求 1所述的力学控流一次性使用安全输液器， 其特征是， 所 述安全机构包括有一壳体和位于该壳体中的一个浮体， 所述浮体随着所述壳 体内药液的增减而升降。  2. The mechanical flow control single-use safety infusion set according to claim 1, wherein said safety mechanism comprises a housing and a floating body located in said housing, said floating body following said housing The liquid medicine rises and falls and rises and falls.
3、如权利要求 2所述的力学控流一次性使用安全输液器， 其特征是， 所 述安全机构的壳体与所述滴斗一体成型或分体设置。  3. The mechanical flow control disposable safety infusion set of claim 2, wherein the housing of the safety mechanism is integrally or separately disposed with the drip bucket.
4、如权利要求 2或 3所述的力学控流一次性使用安全输液器，其特征是， 所述壳体包括至少一个药液入口部和至少一个药液出口部。  4. A mechanically controlled flow disposable safety infusion set according to claim 2 or 3, wherein said housing comprises at least one medical fluid inlet portion and at least one medical fluid outlet portion.
5、如权利要求 2-4任一项所述的力学控流一次性使用安全输液器， 其特 征是， 所述壳体内至少设置有一限位件 , 以限制该浮体在该壳体内的升降范 围。  The mechanical flow control single-use safety infusion set according to any one of claims 2 to 4, wherein at least one limiting member is disposed in the housing to limit the lifting range of the floating body in the housing. .
6、如权利要求 4或 5所述的力学控流一次性使用安全输液器，其特征是， 所述壳体内的药液出口部和所述浮体之间至少设置一密封件。  The mechanical flow control single-use safety infusion set according to claim 4 or 5, wherein at least a sealing member is disposed between the chemical liquid outlet portion and the floating body in the casing.
7、如权利要求 2-6任一项所述的力学控流一次性使用安全输液器， 其特 征是， 所述浮体嵌置于所述壳体内不可相对壳体转动。  7. A mechanically controlled flow disposable safety infusion set according to any of claims 2-6, wherein said floating body is embedded within said housing and is non-rotatable relative to the housing.
8、如权利要求 7所述的力学控流一次性使用安全输液器， 其特征是， 所 述壳体内至少设置一凹槽 /凸块， 所述浮体上至少设置一与所述凹槽 /凸块对 应的凸块 /凹槽， 借助所述凸块和凹槽的配合， 所述浮体可上下移动地嵌置于 所述壳体内。  8. The mechanical flow control single-use safety infusion set according to claim 7, wherein at least one groove/bump is disposed in the housing, and at least one groove/convex is disposed on the floating body. The corresponding bump/groove of the block, by means of the cooperation of the bump and the groove, the floating body can be embedded in the housing in a vertically movable manner.
9、如权利要求 2-8任一项所述的力学控流一次性使用安全输液器， 其特 征是， 所述浮体下端设置一密封件， 该密封件为一带锥度的软锥头。  9. The mechanically controlled flow disposable safety infusion set of any of claims 2-8, wherein the lower end of the floating body is provided with a sealing member, the sealing member being a tapered soft cone.
10、 如权利要求 2-9任一项所述的力学控流一次性使用安全输液器， 其 特征是， 所述壳体的药液出口部设置一密封件， 该密封件中间设一通孔， 所 述浮体置于该密封件上方。 10. A mechanically controlled flow disposable safety infusion set according to any of claims 2-9, The utility model is characterized in that a liquid sealing portion of the casing is provided with a sealing member, a through hole is arranged in the middle of the sealing member, and the floating body is placed above the sealing member.
11、 如权利要求 10所述的力学控流一次性使用安全输液器， 其特征是， 所述密封件的中间比四周薄。  11. The mechanical flow control disposable safety infusion set of claim 10, wherein the middle of the seal is thinner than the circumference.
12、 如权利要求 2-8任一项所述的力学控流一次性使用安全输液器， 其 特征是，所述壳体内下端设有一连接件,该连接件具有一供药液流通的通孔， 该连接件凸起于所述壳体的药液出口部。  The mechanical flow control single-use safety infusion device according to any one of claims 2-8, wherein a lower end of the housing is provided with a connecting member, and the connecting member has a through hole for circulating the medicine liquid. The connecting member protrudes from the chemical liquid outlet portion of the housing.
13、 如权利要求 12所述的力学控流一次性使用安全输液器， 其特征是， 所述连接件与所述壳体一体成型。  13. The mechanical flow control single-use safety infusion set according to claim 12, wherein the connecting member is integrally formed with the housing.
14、 如权利要求 12或 13所述的力学控流一次性使用安全输液器， 其特 征是, 所述浮体下方设有一密封膜片。  14. A mechanically controlled flow disposable safety infusion set according to claim 12 or claim 13 wherein a sealing membrane is disposed beneath the floating body.
15、 如权利要求 14所述的力学控流一次性使用安全输液器， 其特征是， 所述浮体和所述密封膜片之间设有一凹形部。  15. The mechanical flow control single-use safety infusion set according to claim 14, wherein a concave portion is disposed between the floating body and the sealing membrane.
16、 如权利要求 15所述的力学控流一次性使用安全输液器， 其特征是， 所述密封膜片与所述凹形部一体成型构成一密合件。  16. The mechanical flow control single-use safety infusion set according to claim 15, wherein the sealing film and the concave portion are integrally formed to form a closet.
17、 如权利要求 5所述的力学控流一次性使用安全输液器， 其特征是， 所述限位件与所述密封件间的距离约为浮体高度的 1.5倍以上， 在所述壳体 外侧设置一报警装置， 所述^ ^艮警装置包括一只光敏夹， 所述光敏夹的半圆对 称位置各固定一只聚光灯和一只光敏管，所述聚光灯和光敏管连接一报警盒， 所述报警盒接通电源， 并接通病人床头的呼叫开关。  The mechanical flow control single-use safety infusion set according to claim 5, wherein the distance between the limiting member and the sealing member is about 1.5 times or more of the height of the floating body, in the housing An alarm device is disposed on the outer side, and the alarm device comprises a photosensitive clip, wherein the photosensitive clip has a semi-circular symmetrical position for fixing a spotlight and a photosensitive tube, and the spotlight and the photosensitive tube are connected to an alarm box. The alarm box is powered on and the call switch of the patient's bed is turned on.
18、 如权利要求 7或 8所述的力学控流一次性使用安全输液器， 其特征 是， 所述安全输液器还包括一可设置于软管上的加药件， 在所述壳体的药液 出口部上下平行设置有两片中间具有通孔的密封件， 所述浮体可自由转动地 位于所述两片密封件之间。  18. The mechanical flow control single-use safety infusion set according to claim 7 or 8, wherein the safety infusion device further comprises a medicating member disposed on the hose, in the housing The liquid medicine outlet portion is disposed in parallel with two upper and lower sealing members having a through hole therebetween, and the floating body is rotatably disposed between the two sealing members.
19、 如权利要求 1所述的力学控流一次性使用安全输液器， 其特征是， 在所述插瓶针和所述滴斗之间还可设置有输液导管。  19. The mechanically controlled flow disposable safety infusion set of claim 1, wherein an infusion catheter is further disposed between the insertion needle and the dripper.
PCT/CN2005/000984 2004-09-09 2005-07-05 A disposal safty infusion device WO2006026904A1 (en)

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CN 200420082693 CN2732263Y (en) 2004-09-09 2004-09-09 Disposable vacuum current-stopping transfusion device
CN200420082692.0 2004-09-09
CN 200420082692 CN2732258Y (en) 2004-09-09 2004-09-09 Disposable infusion device utilized mechanics principle to control infusion course

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CN102935257A (en) * 2012-11-30 2013-02-20 南京金同润医疗科技有限公司 Safety component for automatic protection in intravenous infusion
CN113368337A (en) * 2021-07-14 2021-09-10 中国人民解放军总医院海南医院 Device for delivering chemotherapeutic drugs
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WO2021214609A1 (en) * 2020-04-22 2021-10-28 Kci Licensing, Inc. Bridge dressing for irrigation of multiple tissue sites
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