CN211835633U

CN211835633U - Infusion apparatus for pump

Info

Publication number: CN211835633U
Application number: CN202020145828.7U
Authority: CN
Inventors: 陈小伟; 宋伟飞; 周勇
Original assignee: Jiangsu Kangjin Medical Instrument Co ltd
Current assignee: Jiangsu Kangjin Medical Instrument Co ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-11-03
Anticipated expiration: 2030-01-20

Abstract

The utility model discloses a pump infusion apparatus, which comprises a puncture outfit, a dropping funnel, a flow regulator, a three-way pipe and a liquid medicine filter which are connected in series in sequence through pipelines; a sealing joint is arranged at a medicine adding port of the three-way pipe; the tail end of the pipeline is also communicated with an exhaust protective cap, one end of the exhaust protective cap is connected with the pipeline, a sealing film is fixed at the other end of the exhaust protective cap, a through hole suitable for inserting the handle end of the transfusion needle is formed in the center of the exhaust protective cap, and when the handle end of the transfusion needle is inserted into the through hole, the sealing film can be pierced. The utility model is provided with the exhaust protective cap at the end of the pipeline of the infusion apparatus, the end part of the exhaust protective cap is sealed by the sealing film, and the liquid medicine can not flow out from the end of the pipeline in the exhaust process of the infusion apparatus due to the sealing of the sealing film, so that medical personnel can not observe the exhaust condition all the time; after the exhaust is finished, the infusion needle is inserted into the exhaust protective cap and the sealing membrane is punctured, so that the infusion needle is communicated with the pipeline, the waste of liquid medicine is effectively avoided, and the infusion needle can be always kept in a sterile state.

Description

Infusion apparatus for pump

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a transfusion system for pump.

Background

At present, most of clinical applications adopt the ordinary infusion apparatus in fig. 1 to be used with an infusion pump, and the ordinary infusion apparatus has the following risks: firstly, the toughness of the pipeline is poor, and after the pipeline is extruded and deformed to be recovered after being matched with an infusion pump for long-time infusion, the infusion precision is seriously influenced; secondly, the medicine adding port adopts the traditional acupuncture medicine adding, so that the risk of stabbing medical care personnel and causing infection exists in the medicine adding process; the terminal infusion needle department of pipeline does not seal, the infusion needle exposes in the air, can not keep aseptic state, and when the puncture ware exhausts to the pipeline in inserting the liquid medicine bottle, medical personnel need continuously observe whether exhaust is accomplished, if exhaust is incomplete, blood return phenomenon takes place when will causing the infusion, exhaust and accomplish the back and will have the liquid medicine from the infusion needle blowout, need be up the infusion needle this moment, avoid the liquid medicine blowout too much, nevertheless this all can't avoid can cause the waste of certain liquid medicine.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that after the exhaust of the infusion apparatus in the prior art is completed, the liquid medicine can be sprayed out from the infusion needle to cause the waste of the liquid medicine, the utility model provides an infusion apparatus for a pump solves the problems.

The utility model provides a technical scheme that its technical problem adopted is: a pump infusion apparatus comprises a puncture outfit, a dropping funnel, a flow regulator, a three-way pipe and a liquid medicine filter which are connected in series in sequence through a pipeline; a sealing joint is arranged at a medicine adding port of the three-way pipe; the tail end of the pipeline is further communicated with an exhaust protective cap, one end of the exhaust protective cap is connected with the pipeline, a sealing film is fixed at the other end of the exhaust protective cap, a through hole suitable for inserting of a handle end of a transfusion needle is formed in the center of the exhaust protective cap, and when the handle end of the transfusion needle is inserted into the through hole, the sealing film can be pierced.

Furthermore, be connected with the seal membrane the one end of exhaust helmet has to the sunken depressed groove of the other end of exhaust helmet, the internal diameter of depressed groove with the internal diameter of exhaust helmet equals, the seal membrane with the inner wall fixed connection of depressed groove.

Preferably, the concave groove is a flat circular groove, so that the end part of the exhaust protective cap is of a two-layer ladder structure.

Preferably, the sealing film is heat-welded to an inner wall of the recess groove.

Preferably, the sealing membrane is a PTFE membrane.

Furthermore, the pipeline is made of high-elastic PVC materials.

Further, the sealing joint is a luer joint connected with a dosing port of the three-way pipe.

Furthermore, a plurality of cutting surfaces arranged along the circumferential direction are arranged on the outer side of the circumference of the exhaust protective cap, and each cutting surface extends from one end of the exhaust protective cap to the other end of the exhaust protective cap.

Furthermore, the tail end of the pipeline is provided with an infusion needle seat, the end part of the exhaust protective cap connected with the pipeline is provided with a boss which extends outwards along the radial direction from the outer side wall of the exhaust protective cap, and the boss is fixedly attached to the end face of the infusion needle seat.

The utility model has the advantages that:

(1) the utility model is provided with the exhaust protective cap at the end of the pipeline of the infusion apparatus, the end part of the exhaust protective cap is sealed by the sealing film before the infusion apparatus is used and in the exhaust process, the liquid medicine can flow in the pipeline by itself, and the liquid medicine can not flow out from the end of the pipeline due to the plugging of the sealing film, so that the medical staff does not need to observe the exhaust condition all the time; after the exhaust is finished, the infusion needle is inserted into the exhaust protective cap and the sealing membrane is punctured, so that the infusion needle is communicated with the pipeline, the waste of liquid medicine is effectively avoided, and the infusion needle can be always kept in a sterile state.

(2) The utility model discloses in the pipeline adopts high-elastic PVC material to make, can tolerate the long-term extrusion of transfer pump and still keep good resilience, guarantees that the change of the speed of whole infusion in-process is invariable within 3%, guarantees the accuracy of clinical dosing.

(3) The utility model discloses in add the medicine mouth and adopt the design of needleless connector, add the medicine mouth and connect one and luer connects, and the conical head through the syringe with luer articulate adds the medicine, thoroughly avoid clinical medical personnel to be stinging and the risk that takes place to infect by the needle point with the medicine in-process.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic diagram of a prior art pump infusion set;

fig. 2 is a schematic structural view of an embodiment of the infusion apparatus for a pump according to the present invention;

fig. 3 is a schematic view of the shape and end face connection relationship of the luer connector of the present invention;

FIG. 4 is a schematic structural view of the exhaust hood of the present invention;

fig. 5 is an enlarged view at a in fig. 4.

In the figure, 1, a puncture outfit, 101, a puncture needle head, 102, a puncture handle, 2, a dropping funnel, 201, a small dropper, 3, a flow regulator, 301, a regulator frame, 302, a regulating roller, 4, a three-way pipe, 5, a liquid medicine filter, 6, a sealing joint, 7, an exhaust protective cap, 701, a through hole, 702, a concave groove, 703, a cutting surface, 704, a boss, 8, a sealing membrane, 9, an infusion needle, 901, a handle end, 10, a medicine adding port, 11, an infusion needle seat, 12, a pipeline, 13, a pipe clamp, 14 and a luer joint are included.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Embodiment 1, as shown in fig. 2 to 5, a pump infusion set comprises a puncture outfit 1, a dropping funnel 2, a flow regulator 3, a three-way pipe 4 and a liquid medicine filter 5 which are connected in series in sequence through a pipeline 12; a sealing joint 6 is arranged at a medicine adding port 10 of the three-way pipe 4; the tail end of the pipeline 12 is also communicated with an exhaust protective cap 7, one end of the exhaust protective cap 7 is connected with the pipeline 12, a sealing membrane 8 is fixed at the other end of the exhaust protective cap 7, a through hole 701 suitable for inserting the handle end 901 of the transfusion needle 9 is formed in the center of the exhaust protective cap 7, and when the handle end 901 of the transfusion needle 9 is inserted into the through hole 701, the sealing membrane 8 can be pierced. The structure of the pump infusion apparatus after the infusion needle 9 is inserted into the exhaust protective cap 7 is not shown in the attached drawing, and compared with the prior art, the structure of the pump infusion apparatus after the infusion needle 9 is inserted into the exhaust protective cap 7 is only provided with a small section of exhaust protective cap 7 between the infusion needle seat 11 and the infusion needle 9.

The puncture outfit 1, the dropping funnel 2, the flow regulator 3, the three-way pipe 4 and the liquid medicine filter 5 are all in the prior art, as shown in fig. 2, a pipe clamp 13 can be arranged on a pipeline 12 to fix the pipeline 12 conveniently, and in the embodiment, the pipe clamps 13 are respectively arranged on the pipeline 12 close to the puncture outfit 1 and the infusion needle 9. The puncture outfit 1 comprises a puncture needle head 101 and a puncture handle 102, the drip chamber 2 adopts a Murphy dropper, one end of the inner part of the drip chamber 2 close to the puncture outfit 1 is provided with a small dropper 201, the liquid medicine enters the drip chamber 2 from the small dropper 201, when the liquid medicine splashes in the drip chamber 2 in the dropping process or in the moment of dropping the liquid medicine, the liquid medicine contacts with the gas in the drip chamber 2, the gas-liquid mixing phenomenon occurs, the liquid medicine mixed with the gas is input into the human body and can influence the human body, therefore, the end of the small dropper 201 is preferably bent to be contacted with the side wall of the drip chamber 2, the liquid medicine flows down along the side wall of the drip chamber 2 after entering from the small dropper 201, the splashing of the liquid medicine is avoided, and the gas-liquid mixing phenomenon.

The flow regulator 3 comprises a regulator frame 301 and a regulating roller 302, the regulator frame 301 is sleeved on the pipeline 12, the flow on the pipeline 12 inside the flow regulator 3 is changed by regulating the regulating roller 302, and the regulating roller 302 can be but not limited to a cam structure.

Two straight ends of the three-way pipe 4 are respectively communicated with the puncture outfit 1 and the transfusion needle 9, the lateral extension end of the three-way pipe 4 is a medicine adding opening 10, the sealing joint 6 can be covered on the medicine adding opening 10, when medicine needs to be added, the sealing joint 6 is taken down, and medicine is directly added through acupuncture.

The utility model discloses a concrete implementation way does: before infusion, the exhaust protective cap 7 at the end of the pipeline 12 (i.e. the end of the pipeline 12 connected with the infusion needle 9) is in a sealed state, after the puncture outfit 1 is inserted into a liquid medicine bottle, the liquid medicine enters the end flowing to the pipeline 12 along the pipeline 12, gas in the pipeline 12 is gradually exhausted, the liquid medicine cannot flow out from the pipeline 12 under the shielding effect of the sealing membrane 8, therefore, in the exhaust process, medical personnel do not need to observe exhaust situation all the time, when the pipeline 12 is full of the liquid medicine, namely after the exhaust is finished, the flow regulator 3 is closed, the pressure in the pipeline 12 is kept fixed, the infusion needle 9 is inserted into the exhaust protective cap 7 under the condition that the end opening of the pipeline 12 is upward, the handle end 901 of the infusion needle 9 punctures the sealing membrane 8, the pipeline 12 is communicated with the outside, the liquid medicine cannot be sprayed out of the infusion needle 9 at the moment, waste of the liquid medicine is effectively avoided, and, the transfusion needle 9 can be kept in a sterile state all the time without being exposed in the air, thereby avoiding the occurrence of infection. The sealing film 8 is preferably a PTFE film, which is a microporous film produced by using polytetrafluoroethylene dispersion resin through special processes such as premixing, extrusion, calendering, biaxial stretching and the like, and has preferably excellent waterproof and moisture-permeable functions.

The exhaust cap 7 and the sealing film 8 can be fixed by, but not limited to, the following means: as shown in fig. 4 and 5, one end of the exhaust cap 7 to which the sealing film 8 is connected has a concave groove 702 that is concave toward the other end of the exhaust cap 7, the inner diameter of the concave groove 702 is equal to the inner diameter of the exhaust cap 7, and the sealing film 8 is fixedly connected to the inner wall of the concave groove 702. The contact area that can increase seal membrane 8 and exhaust helmet 7 of setting up of sunken groove 702 improves connection strength, sets up sunken groove 702 back simultaneously, and the outer terminal surface of seal membrane 8 can be parallel with the outer terminal surface of exhaust helmet 7, hides in the outer terminal surface of exhaust helmet 7 even, and after seal membrane 8 was punctured, exhaust helmet 7 reached outer terminal surface structure and is not influenced, guarantees exhaust helmet 7 and transfusion needle 9 complex compact. The sealing membrane 8 and the inner wall of the concave groove 702 are preferably fixed by hot welding, the welding spot is small, and the sealing membrane can be hidden in the exhaust protective cap 7 without influencing the assembly of the exhaust protective cap 7 and the infusion needle 9.

The concave groove 702 is preferably a flat circular groove, that is, the distance from any point on the outer end surface of the concave groove 702 to the axial end of the exhaust cap 7 is equal, so that the end of the exhaust cap 7 has a two-layer stepped structure, in which the sealing film 8 is a flat sheet-like film, and the inner end surface edge and the circumferential outer side of the sealing film 8 are in contact with the inner wall of the concave groove 702. The inner end surface is an end surface facing the through hole 701 in the exhaust cap 7, and the inner wall is a wall surface facing the inside of the concave groove 702.

The exhaust protective cap 7 can be sleeved on the pipeline 12 or connected with the end face of the pipeline 12, preferably, the exhaust protective cap 7 is fixed by using a structure of an infusion needle holder 11 on the existing pipeline 12, the infusion needle holder 11 has a radially protruding surface, a boss 704 extending radially and outwardly from the outer side wall of the exhaust protective cap 7 is arranged at the end of the exhaust protective cap 7 connected with the pipeline 12, the boss 704 is attached and fixed to the end face of the infusion needle holder 11, the fixing mode can be welding, gluing or hot pressing, the end face attaching structure of the boss 704 and the infusion needle holder 11 is not shown in the drawing, the relative fixation of the two parts through end face connection (similar to flange connection) is a common connection structure in the field, and the scheme can be implemented by a person skilled in the art according to the description of the specification.

Example 2, in example 1, the tube 12 may be made of a common medical plastic material, but the common medical plastic material has a relatively high hardness, and the tube 12 cannot recover after being extruded and deformed, which seriously affects the infusion precision, and therefore, in this example, the tube 12 is made of a high-elasticity PVC material instead. The high-elastic PVC pipeline 12 can endure the long-term extrusion of the infusion pump and keep good resilience, the speed in the whole infusion process is guaranteed to be constant within +/-3%, and the accuracy of clinical administration is guaranteed.

Example 3, in example 1 or example 2, as shown in fig. 2 and fig. 3, the dosing port 10 is a conventional needle-prick dosing, and there is a risk of pricking medical staff and causing infection during dosing, for this reason, in this example, the sealing joint 6 is changed to a luer 14 connected to the dosing port 10 of the three-way tube 4, the luer 14 can switch 4 infusion bags without inserting or pulling the infusion needle 9 of a patient, the dosing port 10 is designed to be a threaded port (not shown in the drawings) in threaded connection with the luer 14, since the tube diameter of the tube 12 is small and the caliber of the luer 14 is large, the laterally extending section in the three-way tube 4 needs to be designed to be a funnel-shaped structure with a gradually increasing inner diameter from the straight section to the dosing port 10, and the inner diameter is increased in a gradual change manner, so as to avoid sudden change of the flow rate of the liquid medicine, thereby avoiding the occurrence of turbulence when the newly added liquid medicine is mixed with the liquid medicine in the tube 12, discomfort is brought to a patient, the other end of the luer connector 14 can be connected with a conical head of the injector, a needle head does not need to be arranged on the injector, the medicine is added through a needleless connector, and the risk that clinical medical care personnel are stabbed by the needle point and infected in the medicine adding process is thoroughly avoided. In fig. 3, the left end of the luer 14 is connected with the conical head of the injector, the right end is connected with the dosing port 10 on the three-way pipe 4, and since the luer 14 is the prior art, the utility model discloses does not improve its structure and function, so no longer describe its internal structure any more, only show the appearance of the luer 14 in fig. 3, luer 14 specifically adopts 6:100 luer.

Embodiment 4, on the basis of the above embodiments, the plurality of cutting surfaces 703 arranged along the circumferential direction are provided on the outer side of the circumference of the exhaust cap 7, each cutting surface 703 extends from one end of the exhaust cap 7 to the other end of the exhaust cap 7, the cutting surfaces 703 are provided to form an edge on the outer side wall of the circumference of the exhaust cap 7, the smooth characteristic of the circumference of the exhaust cap 7 is changed, when the infusion needle 9 is inserted into the exhaust cap 7, the exhaust cap 7 needs to be held by one hand, and the handle end 901 of the infusion needle 9 needs to be held by the other hand, and the embodiment can increase the friction force on the outer side of the circumference of the exhaust cap 7.

In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A pump-used infusion apparatus is characterized in that: comprises a puncture outfit (1), a dropping funnel (2), a flow regulator (3), a three-way pipe (4) and a liquid medicine filter (5) which are connected in series in sequence through a pipeline (12); a sealing joint (6) is arranged at a medicine adding port (10) of the three-way pipe (4);

the tail end of the pipeline (12) is also communicated with an exhaust protective cap (7), one end of the exhaust protective cap (7) is connected with the pipeline (12), a sealing film (8) is fixed at the other end of the exhaust protective cap (7), a through hole (701) suitable for inserting a handle end (901) of an infusion needle (9) is formed in the center of the exhaust protective cap (7), and when the handle end (901) of the infusion needle (9) is inserted into the through hole (701), the sealing film (8) can be punctured.

2. The infusion set for a pump according to claim 1, wherein: be connected with seal membrane (8) the one end of exhaust helmet (7) have to the sunken depressed groove (702) of the other end of exhaust helmet (7), the internal diameter of depressed groove (702) with the internal diameter of exhaust helmet (7) equals, seal membrane (8) with the inner wall fixed connection of depressed groove (702).

3. The infusion set for a pump according to claim 2, wherein: the concave groove (702) is a flat circular groove, so that the end part of the exhaust protective cap (7) is of a two-layer ladder structure.

4. The infusion set for a pump according to claim 2, wherein: the sealing film (8) is fixed to the inner wall of the concave groove (702) by heat welding.

5. The infusion set for a pump according to claim 1, wherein: the sealing membrane (8) is a PTFE membrane.

6. The infusion set for a pump according to claim 1, wherein: the pipeline (12) is made of high-elastic PVC materials.

7. The infusion set for a pump according to claim 1, wherein: the sealing joint (6) is a luer joint (14) connected with the dosing port (10) of the three-way pipe (4).

8. The infusion set for a pump according to claim 1, wherein: the circumference outer side of the exhaust protective cap (7) is provided with a plurality of cutting surfaces (703) which are arranged along the circumferential direction, and each cutting surface (703) extends from one end of the exhaust protective cap (7) to the other end of the exhaust protective cap (7).

9. The infusion set for a pump according to any one of claims 1 to 8, wherein: the end of pipeline (12) is equipped with infusion needle file (11), with pipeline (12) are connected the tip of exhaust helmet (7) be equipped with by the boss (704) of radial outside extension of the lateral wall of exhaust helmet (7), boss (704) with the terminal surface laminating of infusion needle file (11) is fixed.