CN2083495U

CN2083495U - Liquid fetching needle device for medical infusion device

Info

Publication number: CN2083495U
Application number: CN 91202422
Authority: CN
Inventors: 王仲; 魏厚瑗
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-02-13
Filing date: 1991-02-13
Publication date: 1991-08-28

Abstract

The utility model relates to a liquid fetching needle device for a medical infusion device. The utility model comprises a casing, an air inlet needle, a liquid fetching needle, a one-way and float-typed valve and an air inlet valve; the casing is provided with a channel for infusion; the air inlet needle and the liquid fetching needle are installed atone end of the casing; the one-way and float-typed valve is installed on the casing and is communicated with the liquid fetching needle; the air inlet valve is installed on the casing and is communicated with the air inlet needle; The utility model can overcome the shortage that the air can go into the pipeline for infusion through the needle mouth; the utility model has the advantages of reasonable structure, simple manufacturing process, low production cost, simple use and convenience.

Description

Liquid fetching needle device for medical infusion device

This utility model relates to a kind of medical Transfusion device auxiliary, particularly a kind of needle assembly of getting liquid from infusion bottle.

The liquid pin of getting that domestic hospital uses now is a draw point that is connected with tube for transfusion, thrust with it and to get liquid in the serum cap, after medicinal liquid is totally lost, if untimely replacing infusion bottle, air might enter liquid-transport pipe-line from the pin mouth, and enter patient's blood vessel along pipeline and cause gas embolism, perhaps patients'blood enters the liquid-transport pipe-line after coagulation and causes the path blockade built.In addition, also another root air inlet needle to be thrust serum cap in use and just can carry out normal infusion work.These situations cause a lot of inconvenience to the medical worker.The above-mentioned liquid pin of getting is improved to a duroplasts pin that two independent through-hole are arranged abroad, it can thrust in the serum cap of mouth of infusion bottle simultaneously, a gas inlet hole, another hole fluid.But the problems referred to above that occur after medicinal liquid is totally lost still fail to solve, and, when being needled into bottle cap, this requires great effort very much.

The purpose of this utility model is to overcome shortcoming of the prior art, provides a kind of medical Transfusion device of air admission liquid-transport pipe-line that can prevent to get the liquid needle assembly.

The purpose of this utility model is achieved in that a kind of medical Transfusion device gets the liquid needle assembly, it comprises a housing that has infusion channel, be contained in air inlet needle of housing one end and one and get the liquid pin, be contained on the housing one with get unidirectional float-type valve and air intake valve that communicates with air inlet needle that the liquid pin communicates.

Medical Transfusion device of the present utility model is got the liquid needle assembly compared with prior art, has not only overcome air and might enter the shortcoming of liquid-transport pipe-line from the pin mouth, and had rational in infrastructurely, and technology is simple, low production cost and manipulate advantage simply and easily.

Describe most preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing:

Fig. 1 is the generalized section that this utility model medical Transfusion device is got an embodiment of liquid needle assembly.

Fig. 2 is the generalized section that this utility model medical Transfusion device is got another embodiment of liquid needle assembly.

Referring to Fig. 1, a kind of new medical transfusion device is got the liquid needle assembly and is comprised; Air inlet needle 1, get liquid pin 2, air inlet 3, filter air cushion 4, housing 5, cavity 15, float 6, valve seat 7, flexible pipe 8, corrugated tube 9, end socket 10, filter air cushion 11.Air inlet needle 1 and get liquid pin 2 and be sharp hard pin, its door is contained in an end of housing 5 abreast, and they face mutually very closely and all have sharp cutting edge, and are when thrusting the rubber lid of infusion bottle, more much easier than the external plastic spike with two through holes.The flexible pipe 12 that is connected on the other end on the housing 5 communicates with air inlet needle 1, and corrugated tube 9 joins with flexible pipe 12, opens end socket 10, and air enters in the infusion bottle through corrugated tube 9, flexible pipe 12, air inlet needle 1 by filter air cushion 11.Medicinal liquid in the infusion bottle (not shown) enters unidirectional float-type valve in the housing 5 along getting liquid pin 2, and valve 6 in the cavity 15 floats from valve seat 7, and the air on float 6 tops is discharged by filter air cushion 4 and air inlet 3, and medicinal liquid enters transfusion device by flexible pipe 8.The effect of corrugated tube 9 is the height that are used for adjusting filter air cushion 11, can not enter corrugated tubing 9 and only enter the check valve that is made of valve seat 7 and float 6 in the housing 5 along getting liquid pin 2 with the assurance medicinal liquid.After the medicinal liquid in the infusion bottle was totally lost, float 6 sank, and pasted tight with the valve seat 7 corresponding parts in the housing 5.Medicinal liquid is enclosed in the tube for transfusion and no longer descends, and air can not imported in the human vas, because the sealing process of medicinal liquid, blood can not enter in the tube for transfusion yet.

Fig. 2 has provided another embodiment of the present utility model.It and the former's difference is the air intake valve part, and referring to Fig. 2, flexible pipe 12 communicates with air inlet needle 1, is with 13 of a clamp plate type switch on flexible pipe 12, and it has the crack of a key hole shape, in order to the break-make of control flexible pipe.Induction part comprises air inlet valve body 17, nonreturn valve core 18, inlet valve seat 19, filter air cushion 14 and filter bed lid 16.Described nonreturn valve core 18 can be a sphere as shown in the figure, also truncated cone shape, and its valve seat 19 also will be done corresponding variation.When the needs air inlet, open clamp plate type switch 13, air is pushed nonreturn valve core 18 from the air inlet of filter bed lid 16 open by filter air cushion 14 and is entered the infusion bottle (not shown) along flexible pipe 12.

The end socket 10 in this utility model and the use of clamp plate type switch 13 are for convenience of the medical worker one to be stamped as the liquid in the bottle of Jiao Gai to seal in another infusion bottle that seals.In this process, earlier two this delivery outlets of getting the liquid needle assembly are connected, thrust the serum cap of two bottles then respectively, the root tool need can closing control air inlet needle 1 end socket 10 or clamp switch 13.

Float 6 of the present utility model can be done globulate, truncated cone shape or other suitable shape.Its valve seat 7 also will be done corresponding variation.

Air intake valve part of the present utility model can also be made multiple version, but does not exceed this utility model essence.

Whole parts in the medical Transfusion device assembly of the present utility model all adopt the manufacturing of medical high polymer polymeric material, air inlet needle and get the liquid pin and also can adopt the metal manufacturing.

Claims

1, a kind of medical Transfusion device is got the liquid needle assembly, it comprises a housing that has infusion channel, get the liquid pin for one, an air inlet needle is characterized in that: it also comprise one with get unidirectional float-type valve and air intake valve that communicates with air inlet needle that the liquid pin communicates.

2, the described medical Transfusion device of root tool claim 1 is got the liquid needle assembly, it is characterized in that: described float-type valve is made up of the intravital cavity of shell, float and valve seat.

3, the described medical Transfusion device of root tool claim 2 is got the liquid needle assembly, it is characterized in that: described float can be spherical, also can be truncated cone shape, and its valve seat is corresponding shape.

4, the described medical Transfusion device of root tool claim 1 is got the liquid needle assembly, it is characterized in that: described air intake valve is made of flexible pipe, corrugated tube, filter air cushion and end socket.

5, the described medical Transfusion device of root tool claim 1 is got the liquid needle assembly, it is characterized in that: described air intake valve is made of flexible pipe, clamp plate type switch, valve body, nonreturn valve core, inlet valve seat, filter air cushion and filter bed lid.

6, the described medical Transfusion device of root tool claim 5 is got the liquid needle assembly, it is characterized in that: described nonreturn valve core can be spherical, also can be taper, and its inlet valve seat is a respective shapes.

7, the described medical Transfusion device of root tool claim 1 is got the liquid needle assembly, it is characterized in that: described housing, unidirectional float-controlled valve, get liquid pin, air inlet needle, air intake valve etc. all parts make by the medical high polymer polymeric material.

8, the described medical Transfusion device of root tool claim 1 is got the liquid needle assembly, it is characterized in that: describedly get the liquid pin and air inlet needle can be made with metal material.