WO2014082413A1 - 一种囊式自动输液器 - Google Patents

一种囊式自动输液器 Download PDF

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Publication number
WO2014082413A1
WO2014082413A1 PCT/CN2013/074057 CN2013074057W WO2014082413A1 WO 2014082413 A1 WO2014082413 A1 WO 2014082413A1 CN 2013074057 W CN2013074057 W CN 2013074057W WO 2014082413 A1 WO2014082413 A1 WO 2014082413A1
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WO
WIPO (PCT)
Prior art keywords
capsule
cover
cavity
liquid
pump body
Prior art date
Application number
PCT/CN2013/074057
Other languages
English (en)
French (fr)
Inventor
张煜佳
Original Assignee
电白县康尔美生物科技有限公司
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
Application filed by 电白县康尔美生物科技有限公司 filed Critical 电白县康尔美生物科技有限公司
Publication of WO2014082413A1 publication Critical patent/WO2014082413A1/zh

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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
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • A61M5/148—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons flexible, e.g. independent bags
    • A61M5/152—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons flexible, e.g. independent bags pressurised by contraction of elastic reservoirs
    • 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
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • A61M5/148—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons flexible, e.g. independent bags

Definitions

  • the invention relates to the technical field of medical instruments, and in particular to a capsule automatic infusion set. Background technique
  • the infusion set is one of the commonly used medical supplies for intravenous injection in the medical field.
  • the infusion set is usually inserted into a medicine bag to deliver the drug solution in the medicine bag to the venous blood vessel.
  • the infusion set and the medicine bag can only be used once and cannot be reused, and the cost of one infusion is relatively high.
  • One of the objects of the present invention is to provide a capsule automatic infusion set that avoids the deficiencies in the prior art.
  • the capsule automatic infusion set is not only low in cost but also does not need to be hung in a high position like the prior art infusion set. In order to pass the gravity drip, it has the characteristics of being unconstrained by the use environment and convenient to use.
  • a capsule automatic infusion set provided with a liquid storage pump, a drip bucket, an upper catheter, a lower catheter, an adjusting device and a puncture needle;
  • the liquid storage pump is in communication with the drip chamber through an upper conduit, one end of the lower conduit is in communication with an output end of the drip bucket, the other end of the lower conduit is connected to the puncture needle, and the adjusting device is assembled in the chamber Illustrating the catheter and the adjusting device is disposed between the dripper and the puncture needle; the liquid storage pump is provided with a cavity, a power mechanism and a liquid storage mechanism;
  • the power mechanism is movably mounted inside the cavity, and the liquid storage mechanism is assembled to the capacity Cavity front end
  • the liquid storage mechanism is provided with a capsule cover, an elastic drug bag and an infusion end, the infusion end is disposed on an outer side of the capsule cover, and the elastic drug capsule is sealed and assembled on an inner wall surface of the capsule cover, and the capsule cover Forming a cavity for accommodating the medical solution with the elastic sachet, the cap is fixedly assembled in front of the cavity
  • the elastic sachet is provided with a capsule wall and a capsule cavity, the balloon wall being fixedly connected to the capsule cavity, the capsule wall being sealingly connected to the inner wall surface of the capsule cover.
  • the capsule wall and the capsule cavity are provided in an integrally formed structure.
  • the power mechanism is provided with a core rod, a rubber plug and a spring, the core rod is provided with a pull ring; the cavity is provided with a spring cover, and the spring cover is assembled at the end of the cavity;
  • the rubber plug is fixedly assembled to one end of the core rod, the pull ring is assembled to the other end of the core rod, the core rod is movably assembled to the cavity and the spring cover is passed through the
  • the spring sleeve is disposed on the core rod, and the spring is assembled between the rubber plug and the spring cover, and the rubber plug is in sealing and movable contact with the inner wall surface of the cavity.
  • the liquid storage pump is further provided with a pump body dosing end, a pump body dosing pipe, a pump body dosing joint and a pump body dosing liquid retaining clip, and the pump body dosing end is disposed on the cap cover, the pump One end of the body medicinal catheter is connected to the pumping end of the pump body, and the other end of the pumping medicated catheter is connected with the pump body medicinal joint, and the pump body medicated liquid retaining clip is assembled to the pump body
  • the drug conduit and the pump body dosing clip are disposed between the pump body dosing end and the pump body dosing joint.
  • the dripper is provided with a body, an input duct, an exhaust device and a drain device; the body is provided with an upper end cover fitted to the input end and a lower end cover fitted to the output end; the input duct, the exhaust device Both are assembled to the upper end cap;
  • the liquid discharging device is disposed inside the body and the liquid discharging device is fixedly assembled with the lower end cover;
  • the liquid discharging device is provided with an output pipe, the output pipe is provided with a liquid inlet hole, and the liquid inlet hole is disposed at an upper end portion of the output pipe.
  • the exhaust device is provided with an exhaust end and an exhaust pipe, the exhaust end is fixedly mounted to the upper end cover, the exhaust pipe is fixedly connected with the upper end cover, and the exhaust pipe and the exhaust pipe are The end is connected, the portion of the input conduit inserted into the upper end cover is a length H, and the length H is smaller than a distance D between the exhaust pipe and the upper end cover.
  • the body is provided with a convex portion, and the convex portion is thicker than the input end and the output end.
  • the liquid discharging device is further provided with a mounting seat, the output tube passes through the mounting seat and is fixedly connected with the mounting seat, and the mounting seat is fixedly assembled to the lower end cover;
  • the lower surface of the assembly seat is provided with a filter membrane, and the filter membrane is assembled between the assembly seat and the lower end cover, and the filter membrane has a pore diameter of not more than 5 ⁇ m.
  • the liquid inlet holes are provided as square holes, and the liquid inlet holes are provided with at least two, and the liquid inlet holes are evenly distributed at the upper end portion of the output pipe.
  • the capsule automatic infusion set of the present invention is provided with a liquid storage pump, a drip bucket, an upper duct, a lower duct, an adjusting device and a puncture needle; the liquid storage pump is connected to the dripper through an upper duct, and one end of the downcomer Connected to the output end of the drip chamber, the other end of the downcomer is connected to the puncture needle, the adjusting device is mounted on the downcomer and the adjusting device is disposed on the dripper and the puncture needle
  • the liquid storage pump is provided with a cavity, a power mechanism and a liquid storage mechanism; the power mechanism is movably mounted inside the cavity, and the liquid storage mechanism is assembled at a front end of the cavity; the liquid storage mechanism Providing a capsule cover, an elastic drug bag and an infusion end, the infusion end being disposed on an outer side of the capsule cover, the elastic drug capsule sealingly being assembled on an inner wall surface of the capsule cover, the capsule cover and the elastic medicine
  • a cavity for accommodating the medical solution is formed between the capsule
  • the capsule automatic infusion device uses the pulsating power mechanism to suck the liquid medicine from the infusion end into the cavity for storage, and the elastic drug bag will be opened and enter the cavity as the inhaled drug liquid increases; The power mechanism then pushes the elastic drug bag to squeeze the liquid from the infusion end.
  • the liquid injected by the capsule automatic infusion device is only stored in the liquid storage mechanism, and does not enter other parts, so the cavity and the power mechanism are not polluted during the infusion process, and different patients can also be heavy after the injection is completed. Reuse the cavity and the power mechanism. Since the liquid storage pump is under the action of the restoring force of the power mechanism after the liquid is pumped, the power mechanism will automatically push the elastic drug capsule so that the liquid therein is output through the infusion end.
  • the capsule automatic infusion device is used for infusion, and it is not required to be placed in a high position, and the horizontal and vertical placements can be effectively infused, and the utility model has the advantages of convenient use and wide application range.
  • the capsule automatic infusion set is not only low in cost, but also needs to be suspended by gravity as in the prior art infusion set, and has the characteristics of being unconstrained by the use environment and convenient to use.
  • FIG. 1 is a schematic view showing the structure of a capsule type automatic infusion set of the present invention.
  • FIG. 2 is a schematic view showing the structure of a liquid storage pump of the capsule automatic infusion set of the present invention.
  • Figure 3 is an exploded view of the liquid storage pump of the capsule automatic infusion set of the present invention.
  • FIG. 4 is a schematic cross-sectional structural view of a liquid storage pump of the capsule automatic infusion set of the present invention.
  • Fig. 5 is a schematic view showing the structure of a dripper of the capsule automatic infusion set of the present invention.
  • Figure 6 is an exploded view of the dropper of the capsule automatic infusion set of the present invention.
  • Figure 7 is a schematic cross-sectional view showing the dripper of the capsule automatic infusion set of the present invention.
  • the liquid storage pump 10 the cavity 1 100, the spring cover 1 1 10, the power mechanism 1200, the core rod 1210, the rubber plug 1220, the pull ring 1230, the buckle 1211, the fitting portion 1232, the spring 1240,
  • the convex portion 2130, the input conduit 2200, the exhaust pipe 2310, the exhaust end 2320, the output pipe 2410, the inlet hole 2420, the fitting seat 2430, the filter membrane 2440, the dripper dosing end 2500, and the portion where the input catheter is inserted into the upper end cap Is the length H, the distance D between the exhaust pipe and the upper end cover, the upper duct 30, the downcomer 40, the adjusting device 50, the puncture needle 60, Pump body dosing end 70, pump body dosing pipe 71, pump body dosing joint 72,
  • the capsule automatic infusion set retains a portion 600 after use.
  • a capsule type automatic infusion set as shown in Figs. 1 to 7, is provided with a reservoir pump 10, a drip chamber 20, an upper duct 30, a down tube 40, an adjusting device 50, and a puncture needle 60.
  • the liquid storage pump 10 communicates with the drip chamber 20 through the upper conduit 30.
  • the upper conduit 30 can also be provided with a conduit liquid retaining clip 80 for preventing backflow of the liquid in the bottom infusion set during liquid addition.
  • the lower end of the lower duct 40 is in communication with the output end of the drip chamber 20, the other end of the lower duct 40 is connected to the puncture needle 60, the adjusting device 50 is fitted to the lower duct 40, and the adjusting device 50 is disposed between the drip bucket 20 and the puncture needle 60.
  • the liquid storage pump as shown in Figs. 2 to 4, is provided with a cavity 1100, a power mechanism 1200, and a liquid storage mechanism 1300.
  • the power mechanism 1200 is assembled inside the cavity 1100, and the liquid storage mechanism 1300 is mounted on the front end of the cavity 1100.
  • the liquid storage mechanism 1300 is provided with a capsule cover 1310, an elastic drug bag 1320 and an infusion end 1330.
  • the infusion end 1330 is disposed on the outer side of the capsule cover 1310, and the elastic drug capsule 1320 is sealingly mounted on the inner wall surface of the capsule cover 1310.
  • the capsule cover 1310 and the elastic medicine A cavity for accommodating the drug solution is formed between the capsules 1320, and the capsule cover 1310 is fixedly assembled to the front end of the cavity 1100. Specifically, the front end of the cavity 1100 is threadedly coupled to the cap 1310. When liquid aspiration is performed, the liquid will pass through the infusion end 1330 into the cavity between the cap 1310 and the elastic bladder 1320.
  • the elastic sachet 1320 is provided with a capsule wall 1321 and a capsule chamber 1322.
  • the capsule wall 1321 is fixedly connected to the capsule chamber 1322, and the capsule wall 1321 is sealingly connected to the inner wall surface of the capsule cover 1310.
  • the wall 1321 is convenient
  • the inner wall surface of the capsule cover 1310 is sealingly coupled, and the balloon chamber 1322 facilitates formation of a cavity with the capsule cover 1310.
  • the capsule wall 1321 can be fixedly welded to the inner wall surface of the capsule cover 1310 by microwave welding, and the welding sealing effect is good, and the processing is convenient.
  • the bladder wall 1321 can also be sealingly joined to the bladder cover 1310 in other manners, such as adhesive.
  • the elastic drug bag 1320 is sealedly connected with the cap 1310, after the drug solution enters the cavity through the infusion end 1330, the drug solution only contacts the elastic drug bag 1320 and the cap 1310 portion, and does not contact other components.
  • the liquid storage pump is further provided with a pump body dosing end 70, a pump body dosing pipe 71, a pump body dosing joint 72 and a pump body dosing liquid retaining clip 73, and the pump body dosing end 70 is disposed on the cap 1310, the pump body One end of the dosing catheter 71 is connected to the pumping end 70, the other end of the pumping dosing 71 is connected to the pumping dosing port 72, and the pumping dosing clip 73 is assembled to the pumping dosing 71 and the pump body
  • the dosing liquid retaining clip 73 is disposed between the pump body dosing end 70 and the 9 pump body dosing joint 72.
  • the dosing can be conveniently carried out and is convenient to use.
  • the power mechanism 1200 is provided with a core rod 1210, a rubber plug 1220 and a spring 1240, and the core rod 1210 is provided with a pull ring 1230.
  • the cavity 1100 is provided with a spring cover 1110, and the spring cover 1110 is fitted to the end of the cavity 1100.
  • the rubber plug 1220 is fixedly assembled to one end of the core rod 1210, the pull ring 1230 is assembled to the other end of the core rod 1210, the spring 1240 is sleeved on the core rod 1210, and the core rod 1210 is movably assembled to the cavity 1100 and passes through the spring cover 1110, the spring 1240 is disposed between the rubber plug 1220 and the spring cover 1110, and the rubber plug 1220 is in sealing contact with the inner wall surface of the cavity 1100.
  • the rubber plug 1220 is in sealing contact with the inner wall surface of the cavity 1100.
  • the spring 1240 When the core rod 1210 is pulled toward the end of the cavity 1100 through the pull ring 1230, the spring 1240 will be compressed, and the space between the rubber plug 1220 and the front end of the cavity 1100 is negative.
  • the chamber is compressed such that the liquid to be inhaled will pass through the infusion end 1330 into the cavity between the capsule 1310 and the elastic sachet 1320, and the elastic sachet 1320 and the liquid therein will also gradually enter the chamber 1100.
  • the spring 1240 When the injection is performed, the spring 1240 is under the action of the restoring force.
  • the pull ring 1230 is provided with a buckle 1231 and a mounting portion 1232.
  • the mounting portion 1232 is fixedly coupled to the buckle 1231, and the mounting portion 1232 is fixedly mounted at the end of the cavity 1100.
  • the mounting portion 1232 is threadedly coupled to the end of the cavity 1100. It should be noted that, in addition to the threaded connection between the mounting portion 1232 and the end of the cavity 1100, other connections may be made, such as a snap connection, an interference fit, and the like.
  • the liquid storage pump in the process of liquid inhalation and output, the liquid only contacts the cap 1310 and the elastic bag 1320, and is not in contact with other parts. Therefore, when the user uses it, in order to avoid infection, the used cap 1310 and the elastic sachet 1320 are discarded, and the chamber 1100 and the power mechanism 1200 can continue to be used.
  • the reserved portion 600 after use is as shown in FIG.
  • a new liquid storage pump can be constructed again to continue use. Therefore, the liquid storage pump can realize the reuse of some components, and the utility model has low use cost and is more environmentally friendly.
  • the liquid storage pump 10 constitutes the power mechanism 1200 by using the spring 1240 or the like
  • the restoring force of the spring 1240 automatically pushes the liquid medicine into the drip bucket for injection, so the capsule automatic infusion device can be flat. Injection can be performed by placing, slanting or hanging. It is not necessary to set a high position in the prior art infusion to hang the medicine bag at a high position for injection.
  • the liquid storage pump has the characteristics of low use cost and convenient use.
  • the dripper 20 as shown in Figs. 5 to 7, is provided with a body 2100, an input duct 2200, an exhausting device, a dripper dosing end 2500, and a draining device.
  • the body 2100 is provided with a convex portion 2130 which is thicker than the input end and the output end.
  • the structure of the convex portion 2130 is set such that the storage capacity of the drip bucket is large.
  • the input end is thin, the drop velocity of the input conduit 2200 is easily observed at the input end.
  • the output is small, and when the liquid is delivered to a certain amount, the medical staff can easily see the delivery of the liquid.
  • the structure of the convex portion 2130 is set. During the infusion process, the drip bucket can normally transport the liquid no matter how it is placed, and the use is convenient and flexible.
  • the body 2100 is provided with an upper end cap 21 10 fitted to the input end and a lower end cap 2120 fitted to the output end.
  • the input conduit 2200, the venting device, and the dripper dosing end 2500 are all mounted to the upper end cap 21 10 .
  • the input conduit 2200 is used for conveying the liquid delivered by the pump body 10 through the upper conduit 30 to the drip bucket 20, and the exhaust device is used for discharging the gas in the drip bucket 20 at any time during the infusion process, and the dripper dosing end 2500 can be quickly added. medicine. It should be noted that the dropper dosing end 2500 may not be provided according to actual conditions.
  • the exhaust device is provided with an exhaust end 2320 and an exhaust pipe 2310, the exhaust end 2320 is fixedly mounted on the upper end cover 21 10, and the exhaust pipe 2310 is fixedly connected with the upper end cover 21 10, and the exhaust pipe 2310 and the exhaust end 2320 connected.
  • the portion of the input conduit 2200 inserted into the upper end cap 21 10 is the length H, and the length H is smaller than the distance D between the exhaust pipe 2310 and the upper end cap 21 10 .
  • the liquid in the external pouch is connected to the input catheter 2200, and the input catheter 2200 is dropped into the drip chamber.
  • the medical staff observes the drip rate of the liquid through the input catheter 2200.
  • the length H of the input conduit 2200 inserted into the upper end cap 21 10 is smaller than the distance D between the exhaust pipe 2310 and the upper end cap 21 10, so that the gas in the drip bucket will not be lower than the end of the exhaust pipe 2310, in the drip bucket
  • the liquid level is also not higher than the end of the exhaust pipe 2310. In this way, the drip rate at the end of the input conduit 2200 can be effectively observed.
  • the draining device is disposed inside the body 2100 and the draining device is fixedly assembled with the lower end cap 2120.
  • the liquid discharge device is provided with an output pipe 2410, the output pipe 2410 is provided with a liquid inlet hole 2420, and the liquid inlet hole 2420 is provided at an upper end portion of the output pipe 2410.
  • the inlet hole 2420 is set as a square hole.
  • the inlet holes 2420 are set to three, and the inlet holes 2420 are evenly distributed at the upper end of the outlet tube 2410.
  • the inlet holes 2420 are usually set to two or more, such as five or seven. It can also be provided as a liquid inlet hole 2420 as needed.
  • the draining device is further provided with a mounting seat 2430.
  • the output tube 2410 passes through the mounting seat 2430 and is fixedly coupled to the mounting seat 2430.
  • the mounting seat 2430 is fixedly mounted to the lower end cap 2120.
  • a filter membrane 2440 is disposed on the lower surface of the mount 2430, and the filter membrane 2440 is fitted between the mount 2430 and the lower end cap 2120.
  • the filter membrane 2440 has a pore diameter of not more than 5 ⁇ m, and can accurately filter particles of 5 ⁇ m or more, and has a good filtering effect, and can effectively prevent particle contamination.
  • the liquid in the body 2100 enters the output tube 2410 through the inlet hole 2420, is filtered by the output tube 2410 through the filter membrane 2440, and is discharged from the lower end cap 2120. Since the drain passage has only the inlet port 2420 and the outlet tube 2410, the liquid can only be discharged through this passage.
  • the air will not enter the downcomer, which can prevent the gas from being discharged through the output tube 2410, ensuring that the gas enters the venous blood vessel during the infusion process, thereby ensuring the safety of the infusion and avoiding Blood return occurs.
  • the working principle of the capsule automatic infusion device is as follows: Before infusion, the liquid is pumped through the liquid storage pump 10, specifically: pulling the core rod liquid into the liquid storage mechanism, the spring is in a compressed state; then the upper catheter Connected to the infusion end 1330 of the liquid storage mechanism; at this time, the core rod is released, the spring is gradually reset by the restoring force, and the spring 1240 will push the rubber stopper 1220 toward the front end of the cavity 1 100, so that the liquid storage mechanism 1300 is pressed.
  • the liquid will be output into the dripper 20 through the infusion end 1330, and the liquid in the dripper 20 enters the output tube through the inlet hole, and is delivered from the lower catheter to the injection needle for injection.
  • the capsule automatic infusion device adopts a liquid storage pump 10 composed of a spring or the like.
  • the liquid storage pump does not contact the liquid medicine except for the capsule cover and the elastic drug bag portion, so that new components can be assembled. reuse. That is, after the infusion is completed, a new cap, elastic sachet, and new dripper, upper catheter, lower catheter, and injection needle can be assembled to form a new infusion set for infusion. Therefore, the invention can realize the repeated use of some components, and the utility model has the advantages of low cost and environmental protection.
  • the capsule automatic infusion device the power for infusion is from the restoring force of the spring, so there is no need to set a high hanging position as in the prior art to effectively infuse, whether it is flat, vertical or oblique. Effective infusion, more convenient to use.
  • the capsule automatic infusion device does not need to be like in the prior art
  • the infusion set needs to be hung in the high position to drip by gravity, and has the characteristics of being unconstrained by the use environment and convenient to use.
  • the capsule automatic infusion set is equipped with a dripper with an exhaust device. During the infusion process, the gas in the drip chamber can be discharged through the exhaust device in real time, preventing the gas from entering the infusion catheter and causing blood return.
  • the invention has the characteristics of simple structure, low cost and convenient use.
  • a capsule type automatic infusion set has the same structure as that of Embodiment 1, except that the capsule wall 1321 and the capsule chamber 1322 are integrally formed, and have the advantages of convenient processing, low cost, and good sealing effect.

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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)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)

Abstract

一种囊式自动输液器，设置有储液泵（10）、滴斗（20）、上导管（30）、下导管（40）、调节装置（50）和穿刺针头（60）；储液泵（10）设置有容腔（1100）、动力机构（1200）和储液机构（1300）；动力机构（1200）活动装配于容腔（1100）内部，储液机构（1300）装配于容腔（1100）前端；储液机构（1300）设置有囊盖（1310）、弹性药囊（1320）及输液端（1330），输液端（1330）设置于囊盖（1310）外侧面，弹性药囊（1320）密封装配于囊盖（1310）的内壁面，囊盖（1310）与弹性药囊（1320）之间构成容置药液的空腔，囊盖（1310）固定装配于容腔（1100）前端。弹性药囊（1320）设置有囊壁（1321）和囊腔（1322）。动力机构（1200）设置有芯杆（1210）、胶塞（1220）、拉环（1230）和弹簧（1240）。滴斗（20）设置有本体（2100）、输入导管（2200）、排气装置和排液装置；排液装置设置有输出管（2410），输出管（2410）设置有进液孔（2420）。排液装置还设置有装配座（2430）和过滤膜片（2440）。该囊式自动输液器具有使用成本低、使用方便、适用范围宽广的特点。

Description

一种囊式自动输液器
技术领域
本发明涉及医疗器械技术领域， 特别是涉及一种囊式自动输液器。 背景技术
输液器是医疗领域静脉注射常用的医疗用品之一。 现有技术中， 输液 器通常与一药袋插接， 将药袋中的药液输送至静脉血管。
现有技术中的这种输液方式， 输液器及药袋只能一次性使用， 不能够 重复使用， 一次输液的成本比较高。
另外，现有技术中的输液方式，为了确保药液顺利滴入滴斗进行注射， 必须将药袋悬挂于高处利用重力作用进行滴液， 导致输液条件存在一定限 制。 因此， 针对现有技术不足， 提供一种成本低、 使用方便的囊式自动输 液器以克服现有技术不足甚为必要。
发明内容
本发明的目的之一在于避免现有技术中的不足之处而提供一种囊式自 动输液器， 该囊式自动输液器不仅成本低而且不需像现有技术中的输液器 需要挂于高位才能通过重力滴液，具有不受使用环境限制、 使用方便的特 点。
本发明的上述目的通过以下技术措施实现。
一种囊式自动输液器， 设置有储液泵、 滴斗、 上导管、 下导管、 调节 装置和穿刺针头；
所述储液泵通过上导管与所述滴斗连通， 所述下导管一端与所述滴斗 的输出端连通， 所述下导管另一端与所述穿刺针头连接， 所述调节装置装 配于所述下导管且所述调节装置设置于所述滴斗与所述穿刺针头之间； 所述储液泵设置有容腔、 动力机构和储液机构；
所述动力机构活动装配于所述容腔内部， 所述储液机构装配于所述容 腔前端；
所述储液机构设置有囊盖、 弹性药囊及输液端， 所述输液端设置于所 述囊盖外侧面， 所述弹性药囊密封装配于所述囊盖的内壁面， 所述囊盖与 所述弹性药囊之间构成容置药液的空腔， 所述囊盖固定装配于所述容腔前
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¾。
上述弹性药囊设置有囊壁和囊腔， 所述囊壁与所述囊腔固定连接， 所 述囊壁与所述囊盖的内壁面密封连接。
上述囊壁和所述囊腔设置为一体成型结构。
上述动力机构设置有芯杆、 胶塞和弹簧， 所述芯杆设置有拉环； 所述容腔设置有弹簧盖， 所述弹簧盖装配于所述容腔末端；
所述胶塞固定装配于所述芯杆的一端， 所述拉环装配于所述芯杆的另 一端， 所述芯杆活动装配于所述容腔且所述穿过所述弹簧盖， 所述弹簧套 设于所述芯杆， 所述弹簧装配于所述胶塞与所述弹簧盖之间， 所述胶塞与 所述容腔的内壁面密封活动接触。
上述储液泵还设置有泵体加药端、 泵体加药导管、 泵体加药接头及泵 体加药止液夹， 所述泵体加药端设置于所述囊盖， 所述泵体加药导管一端 与所述泵体加药端连接， 所述泵体加药导管另一端与所述泵体加药接头连 接， 所述泵体加药止液夹装配于所述泵体加药导管且所述泵体加药止液夹 设置于所述泵体加药端与所述泵体加药接头之间。
优选的， 上述滴斗设置有本体、 输入导管、 排气装置和排液装置； 所述本体设置有装配于输入端的上端盖和装配于输出端的下端盖； 所述输入导管、 所述排气装置均装配于所述上端盖；
所述排液装置设置于所述本体内部且所述排液装置与所述下端盖固 定装配；
所述排液装置设置有输出管， 所述输出管设置有进液孔， 所述进液孔 设置于所述输出管的上端部。 上述排气装置设置有排气端和排气管， 所述排气端固定装配于所述上 端盖，所述排气管与所述上端盖固定连接，所述排气管与所述排气端连通， 所述输入导管插入所述上端盖的部分为长度 H，所述长度 H小于所述排 气管距离所述上端盖之间的距离 D。
上述本体设置有凸部， 所述凸部粗于所述输入端和所述输出端。
上述排液装置还设置有装配座， 所述输出管穿过所述装配座并与所述 装配座固定连接， 所述装配座固定装配于所述下端盖；
所述装配座下表面设置有过滤膜片， 所述过滤膜片装配于所述装配座 与所述下端盖之间， 所述过滤膜片的孔径不大于 5微米。
上述进液孔设置为方孔， 所述进液孔设置有至少两个， 所述进液孔均 匀分布于所述输出管上端部。
本发明的有益效果：
本发明的囊式自动输液器， 设置有储液泵、 滴斗、 上导管、 下导管、 调节装置和穿刺针头； 所述储液泵通过上导管与所述滴斗连通， 所述下导 管一端与所述滴斗的输出端连通， 所述下导管另一端与所述穿刺针头连 接， 所述调节装置装配于所述下导管且所述调节装置设置于所述滴斗与所 述穿刺针头之间； 所述储液泵设置有容腔、 动力机构和储液机构； 所述动 力机构活动装配于所述容腔内部， 所述储液机构装配于所述容腔前端； 所 述储液机构设置有囊盖、 弹性药囊及输液端， 所述输液端设置于所述囊盖 外侧面， 所述弹性药囊密封装配于所述囊盖的内壁面， 所述囊盖与所述弹 性药囊之间构成容置药液的空腔， 所述囊盖固定装配于所述容腔前端。
该囊式自动输液器， 使用时通过通过抽动动力机构将药液从输液端抽 吸入空腔存储， 随着吸入药液的增多， 弹性药囊将被撑开并进入容腔； 而 在注射时动力机构再推动弹性药囊将药液从输液端挤压出去。 该囊式自动 输液器所注射的液体仅存储于储液机构， 不会进入其他部分， 故在输液过 程中不会造成容腔、 动力机构的污染， 注射完毕后， 不同的患者也可以重 复使用容腔、 动力机构部分。 由于储液泵在抽吸液体后， 其动力机构的回 复力作用下， 动力机构将自动推动弹性药囊使得其中的液体通过输液端输 出。 由于在任何状态下动力机构的作用力都存在， 故采用该囊式自动输液 器进行输液， 不需要挂置于高位， 横放、 纵放均可有效输液， 使用方便， 适用范围宽广。
该囊式自动输液器不仅成本低而且不需像现有技术中的输液器需要挂 于高位才能通过重力滴液，具有不受使用环境限制、 使用方便的特点。 附图说明
利用附图对本发明作进一步说明， 但附图中的内容不构成对本发明的 任何限制。
图 1是本发明一种囊式自动输液器的结构示意图。
图 2是本发明囊式自动输液器的储液泵的结构示意图。
图 3是本发明囊式自动输液器的储液泵的爆炸图。
图 4是本发明囊式自动输液器的储液泵的剖面结构示意图。
图 5是本发明囊式自动输液器的滴斗的结构示意图。
图 6是本发明囊式自动输液器的滴斗的爆炸图。
图 7是本发明囊式自动输液器的滴斗的剖面结构示意图。
在图 1至图 7中， 包括有：
储液泵 10、 容腔 1 100、 弹簧盖 1 1 10、 动力机构 1200、 芯杆 1210、 胶塞 1220、 拉环 1230、 扣手 1231、 装配部 1232、 弹簧 1240、
储液机构 1300、 囊盖 1310、 弹性药囊 1320、 囊壁 1321、 囊腔 1322、 输液端 1330、 滴斗 20、 本体 2100、 上端盖 21 10、 下端盖 2120、
凸部 2130、 输入导管 2200、 排气管 2310、 排气端 2320、 输出管 2410、 进液孔 2420、 装配座 2430、 过滤膜片 2440、 滴斗加药端 2500、 输入导管插入上端盖的部分为长度 H、 排气管距离上端盖之间的距离 D、 上导管 30、 下导管 40、 调节装置 50、 穿刺针头 60、 泵体加药端 70、 泵体加药导管 71、 泵体加药接头 72、
泵体加药止液夹 73、 导管止液夹 80、
该囊式自动输液器使用后的保留部分 600。
具体实施方式
结合以下实施例对本发明作进一步描述。
实施例 1。
一种囊式自动输液器， 如图 1至图 7所示， 设置有储液泵 10、 滴斗 20、 上导管 30、 下导管 40、 调节装置 50和穿刺针头 60。
储液泵 10通过上导管 30与滴斗 20连通， 为了便于控制， 上导管 30 还可以设置一导管止液夹 80用以进行加液时防止底部输液器的药液回流。
下导管 40—端与滴斗 20的输出端连通， 下导管 40另一端与穿刺针 头 60连接， 调节装置 50装配于下导管 40且调节装置 50设置于滴斗 20 与穿刺针头 60之间。
储液泵， 如图 2至图 4所示， 设置有容腔 1100、 动力机构 1200和储 液机构 1300。 动力机构 1200活动装配于容腔 1100内部， 储液机构 1300 装配于容腔 1100前端。
储液机构 1300设置有囊盖 1310、 弹性药囊 1320及输液端 1330， 输 液端 1330设置于囊盖 1310外侧面， 弹性药囊 1320密封装配于囊盖 1310 的内壁面，囊盖 1310与弹性药囊 1320之间构成容置药液的空腔，囊盖 1310 固定装配于容腔 1100前端。 具体的， 容腔 1100前端与囊盖 1310螺纹连 接。 当进行液体抽吸时， 液体将通过输液端 1330进入囊盖 1310与弹性药 囊 1320之间的空腔内。
需要说明的是， 容腔 1100前端与囊盖 1310之间除了螺纹连接， 还可 以以其他方式连接， 如卡扣连接等， 具体连接方式可以灵活选择。
弹性药囊 1320设置有囊壁 1321和囊腔 1322， 囊壁 1321与囊腔 1322 固定连接， 囊壁 1321与囊盖 1310的内壁面密封连接。 囊壁 1321方便与 囊盖 1310内壁面密封连接， 囊腔 1322便于与囊盖 1310形成空腔。 囊壁 1321可以以微波焊接方式固定焊接于囊盖 1310的内壁面， 焊接密封效果 好， 而且加工方便。 当然， 囊壁 1321也可以以其他方式于囊盖 1310密封 连接， 如胶粘等。
由于弹性药囊 1320与囊盖 1310之间密封连接，药液通过输液端 1330 进入空腔内后， 药液只与弹性药囊 1320和囊盖 1310部分接触， 不会接触 其他部件。
储液泵还设置有泵体加药端 70、 泵体加药导管 71、 泵体加药接头 72 及泵体加药止液夹 73， 泵体加药端 70设置于囊盖 1310， 泵体加药导管 71 一端与泵体加药端 70连接， 泵体加药导管 71 另一端与泵体加药接头 72 连接， 泵体加药止液夹 73装配于泵体加药导管 71 且泵体加药止液夹 73 设置于泵体加药端 70与 9泵体加药接头 72之间。
通过泵体加药接头 72、 泵体加药导管 71和泵体加药端 70， 可以方便 进行加药， 使用方便。
动力机构 1200设置有芯杆 1210、 胶塞 1220和弹簧 1240， 芯杆 1210 设置有拉环 1230。 容腔 1100设置有弹簧盖 1110， 弹簧盖 1110装配于容 腔 1100末端。
胶塞 1220固定装配于芯杆 1210的一端， 拉环 1230装配于芯杆 1210 的另一端， 弹簧 1240套设于芯杆 1210， 芯杆 1210活动装配于容腔 1100 且穿过弹簧盖 1110， 弹簧 1240设置于胶塞 1220与弹簧盖 1110之间， 胶 塞 1220与容腔 1100的内壁面密封活动接触。
胶塞 1220与容腔 1100 内壁面密封活动接触， 当通过拉环 1230将芯 杆 1210朝容腔 1100末端拉动时， 弹簧 1240将受到压縮， 同时胶塞 1220 与容腔 1100前端的空间形成负压腔，这样待吸入的液体将通过输液端 1330 进入囊盖 1310与弹性药囊 1320之间的空腔， 弹性药囊 1320及其中的液 体也逐渐进入容腔 1100中。当进行注射时，弹簧 1240在回复力的作用下， 将逐渐复位， 在弹簧 1240复位过程中， 由于弹簧 1240另一端卡于弹簧盖 1110， 故弹簧 1240将推动胶塞 1220朝着容腔 1100前端移动， 这样储液 机构 1300受压， 其中的液体将通过输液端 1330输出， 与此同时弹性药囊 1320及其在的液体也逐渐离开容腔 1100。
为了方便操作， 拉环 1230设置有扣手 1231和装配部 1232， 装配部 1232与扣手 1231固定连接， 装配部 1232固定装配于容腔 1100末端。 装 配部 1232与容腔 1100末端螺纹连接。 需要说明的是， 装配部 1232与容 腔 1100 末端之间除了螺纹方式连接， 还可以以其他方式连接， 如卡扣连 接、 过盈装配等。
该储液泵， 在进行液体吸入与输出过程中， 液体只接触囊盖 1310及 弹性药囊 1320 部分， 不与其他部分接触。 故当使用者使用后， 为了避免 感染， 将使用过的囊盖 1310及弹性药囊 1320丢弃， 而容腔 1100和动力 机构 1200还可以继续使用。 使用后的保留部分 600如图 3所示。 将原来 的保留部分 600装配新的储液机构 1300即可再次构成新的储液泵继续使 用。 故该储液泵可以实现部分构件的重复利用， 使用成本低， 更加环保。
该储液泵 10由于采用弹簧 1240等构成动力机构 1200，故与滴斗等装 配注射的时候， 弹簧 1240 的回复力将自动推动药液进入滴斗进行注射， 故该囊式自动输液器可以平放、 斜放或者挂着都可以进行注射， 不需要现 有技术中输液必须设置一高位的架子将药袋挂于高位才能进行注射。
综上所述， 该储液泵具有使用成本低、 使用方便的特点。
滴斗 20， 如图 5至图 7所示， 设置有本体 2100、 输入导管 2200、 排 气装置、 滴斗加药端 2500和排液装置。
本体 2100设置有凸部 2130， 该凸部 2130粗于输入端和输出端。凸部 2130的结构设置， 使得该滴斗的存储容量大。 此外， 由于输入端较细， 在 输入端容易观察输入导管 2200 的滴速。 输出端较小， 当液体输送到一定 量后， 医护人员可以方便看到液体的输送状况。 凸部 2130 的结构设置， 在输液过程中， 滴斗无论怎么放置都可以正 常输送液体， 使用方便灵活。
本体 2100设置有装配于输入端的上端盖 21 10和装配于输出端的下端 盖 2120。
输入导管 2200、 排气装置及滴斗加药端 2500均装配于上端盖 21 10。 输入导管 2200用于将泵体 10通过上导管 30输送的液体输送至滴斗 20， 排气装置用于在输液过程中将滴斗 20内的气体随时排出，滴斗加药端 2500 可以快速加药。 需要说明的是， 也可以根据实际情况不设置滴斗加药端 2500。
具体的， 排气装置设置有排气端 2320和排气管 2310， 排气端 2320固 定装配于上端盖 21 10，排气管 2310与上端盖 21 10固定连接，排气管 2310 与排气端 2320连通。
输入导管 2200插入上端盖 21 10的部分为长度 H，长度 H小于排气管 2310距离上端盖 21 10之间的距离 D。 在进行输液时， 外部药袋的液体与 输入导管 2200连接， 输入导管 2200滴入滴斗内， 通常医护人员通过输入 导管 2200来观测液体的滴速。 输入导管 2200插入上端盖 21 10的长度 H 小于排气管 2310距离上端盖 21 10之间的距离 D, 这样在滴斗内的气体将 不会低于排气管 2310端部， 滴斗内的液面也不会高于排气管 2310端部。 这样， 就可以有效观测输入导管 2200端的滴速。
排液装置设置于本体 2100内部且排液装置与下端盖 2120固定装配。 排液装置设置有输出管 2410， 输出管 2410设置有进液孔 2420， 进液 孔 2420设置于输出管 2410的上端部。
进液孔 2420设置为方孔。 进液孔 2420设置为三个， 进液孔 2420均 匀分布于输出管 2410上端部。
通常， 进液孔 2420 通常设置为两个以上， 如五个、 七个。 也可以根 据需要设置为一个进液孔 2420。 排液装置还设置有装配座 2430，输出管 2410穿过装配座 2430并与装 配座 2430固定连接， 装配座 2430固定装配于下端盖 2120。
装配座 2430下表面设置有过滤膜片 2440，过滤膜片 2440装配于装配 座 2430与下端盖 2120之间。 过滤膜片 2440的孔径不大于 5微米，能够精 确过滤 5微米以上的颗粒，过滤效果好，能够有效防止微粒污染。
在输液过程中，本体 2100内的液体通过进液孔 2420进入输出管 2410， 由输出管 2410经过滤膜片 2440过滤后由下端盖 2120排出。 由于排液通 道只有进液孔 2420、 输出管 2410， 故液体只能通过此通道排出。
排气装置、 排液装置的设置， 无论滴斗处于何种状态， 空气均不会进 入下导管， 能够防止气体通过输出管 2410排出， 确保输液过程中气体进 入静脉血管， 能够确保输液安全， 避免回血现象发生。
该囊式自动输液器工作原理是： 进行输液前， 先通过储液泵 10 抽吸 液体， 具体是： 拉动芯杆液体被抽入储液机构， 此时弹簧处于压縮状态； 然后将上导管与储液机构的输液端 1330 连接； 此时， 松开芯杆， 弹簧在 回复力作用下逐渐复位， 弹簧 1240将推动胶塞 1220朝着容腔 1 100前端 移动， 这样储液机构 1300受压， 其中的液体将通过输液端 1330输出进入 滴斗 20， 滴斗 20内的液体通过进液孔进入输出管输出， 由下导管输送至 注射针头注射。
该囊式自动输液器，采用弹簧等构成的储液泵 10，在进行输液过程中， 储液泵的除去囊盖和弹性药囊部分外， 均不接触药液， 故可以装配新的部 件进行重复使用。 即输液完毕后， 装配新的囊盖、 弹性药囊及新的滴斗、 上导管、 下导管、 注射针头即可组成新的输液器进行输液。 故本发明可以 实现部分部件的重复使用， 使用成本低廉， 更加环保。
此外， 该囊式自动输液器， 进行输液的动力来自弹簧的回复力， 故不 需像现有技术中需要设置一高处挂位才能有效输液，无论平置、还是竖放、 斜放均可有效输液， 使用更加方便。 该囊式自动输液器不需像现有技术中 的输液器需要挂于高位通过重力才能滴液，具有不受使用环境的限制、 使 用方便的特点。
该囊式自动输液器， 配置具有排气装置的滴斗， 在输液过程中滴斗内 的气体可以实时通过排气装置排出， 避免气体进入输液导管而造成回血现 象发生。
此外， 本发明还具有结构简单、 成本低、 使用方便的特点。
实施例 2。
一种囊式自动输液器， 其它结构与实施例 1相同， 不同之处在于： 囊 壁 1321和囊腔 1322设置为一体成型结构， 具有加工方便、 成本低廉， 密 封效果好的特定。
最后应当说明的是， 以上实施例仅用于说明本发明的技术方案而非对 本发明保护范围的限制， 尽管参照较佳实施例对本发明作了详细说明， 本 领域的普通技术人员应当理解， 可以对本发明的技术方案进行修改或者等 同替换， 而不脱离本发明技术方案的实质和范围。

Claims

权 利 要 求 书
1 . 一种囊式自动输液器， 其特征在于： 设置有储液泵、 滴斗、 上导 管、 下导管、 调节装置和穿刺针头；
所述储液泵通过上导管与所述滴斗连通， 所述下导管一端与所述滴斗 的输出端连通， 所述下导管另一端与所述穿刺针头连接， 所述调节装置装 配于所述下导管且所述调节装置设置于所述滴斗与所述穿刺针头之间； 所述储液泵设置有容腔、 动力机构和储液机构；
所述动力机构活动装配于所述容腔内部， 所述储液机构装配于所述容 腔前端；
所述储液机构设置有囊盖、 弹性药囊及输液端， 所述输液端设置于所 述囊盖外侧面， 所述弹性药囊密封装配于所述囊盖的内壁面， 所述囊盖与 所述弹性药囊之间构成容置药液的空腔， 所述囊盖固定装配于所述容腔前
^山
¾。
2. 根据权利要求 1 所述的囊式自动输液器， 其特征在于： 所述弹性 药囊设置有囊壁和囊腔， 所述囊壁与所述囊腔固定连接， 所述囊壁与所述 囊盖的内壁面密封连接。
3. 根据权利要求 2 所述的囊式自动输液器， 其特征在于： 所述囊壁 和所述囊腔设置为一体成型结构。
4. 根据权利要求 3 所述的囊式自动输液器， 其特征在于： 所述动力 机构设置有芯杆、 胶塞和弹簧， 所述芯杆设置有拉环；
所述容腔设置有弹簧盖， 所述弹簧盖装配于所述容腔末端； 所述胶塞固定装配于所述芯杆的一端， 所述拉环装配于所述芯杆的另 一端， 所述芯杆活动装配于所述容腔且所述穿过所述弹簧盖， 所述弹簧套 设于所述芯杆， 所述弹簧装配于所述胶塞与所述弹簧盖之间， 所述胶塞与 所述容腔的内壁面密封活动接触。
5. 根据权利要求 4 所述的囊式自动输液器， 其特征在于： 所述储液 泵还设置有泵体加药端、泵体加药导管、泵体加药接头及泵体加药止液夹， 所述泵体加药端设置于所述囊盖， 所述泵体加药导管一端与所述泵体加药 端连接， 所述泵体加药导管另一端与所述泵体加药接头连接， 所述泵体加 药止液夹装配于所述泵体加药导管且所述泵体加药止液夹设置于所述泵 体加药端与所述泵体加药接头之间。
6. 根据权利要求 5所述的囊式自动输液器， 其特征在于： 所述滴斗 设置有本体、 输入导管、 排气装置和排液装置；
所述本体设置有装配于输入端的上端盖和装配于输出端的下端盖； 所述输入导管、 所述排气装置均装配于所述上端盖；
所述排液装置设置于所述本体内部且所述排液装置与所述下端盖固 定装配；
所述排液装置设置有输出管， 所述输出管设置有进液孔， 所述进液孔 设置于所述输出管的上端部。
7. 根据权利要求 6 所述的囊式自动输液器， 其特征在于： 所述排气 装置设置有排气端和排气管， 所述排气端固定装配于所述上端盖， 所述排 气管与所述上端盖固定连接， 所述排气管与所述排气端连通；
所述输入导管插入所述上端盖的部分为长度 H，所述长度 H小于所述排 气管距离所述上端盖之间的距离 D。
8. 根据权利要求 7 所述的囊式自动输液器， 其特征在于： 所述本体 设置有凸部， 所述凸部粗于所述输入端和所述输出端。
9. 根据权利要求 8所述的囊式自动输液器， 其特征在于： 所述排液 装置还设置有装配座， 所述输出管穿过所述装配座并与所述装配座固定连 接， 所述装配座固定装配于所述下端盖；
所述装配座下表面设置有过滤膜片， 所述过滤膜片装配于所述装配座 与所述下端盖之间， 所述过滤膜片的孔径不大于 5微米。
10. 根据权利要求 9 所述的囊式自动输液器， 其特征在于： 所述进 液孔设置为方孔， 所述进液孔设置有至少两个， 所述进液孔均匀分布于所 述输出管上端部。
PCT/CN2013/074057 2012-11-30 2013-04-11 一种囊式自动输液器 WO2014082413A1 (zh)

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