CN2236854Y

CN2236854Y - Closed infusion medicine adding device

Info

Publication number: CN2236854Y
Application number: CN 95232678
Authority: CN
Inventors: 赵艳杰; 赵艳霞; 张丽
Original assignee: 赵艳杰
Priority date: 1995-11-09
Filing date: 1995-11-09
Publication date: 1996-10-09
Anticipated expiration: 2005-11-09

Abstract

The utility model relates to a closed infusion medicine adding device, belonging to a medical device, and is mainly composed of a T-shaped needle body, a negative-pressure air bag, and a normally closed switch on the air extraction tube of the air bag. The top of the negative-pressure air bag is communicated with the air extraction tube. The air extraction tube is connected with one arm of the needle body. The normally closed switch which is composed of a switch body, a plunger piston, a press cap, and a spring is arranged between the air extraction tube and the needle body. The other arm of the needle body is a medicine sucking mouth and a closed cover is sleeve on the outer part of the needle body. A spring clamp is arranged on the middle part of the vertical arm of the needle body. Two passages which are a medicine adding passage and an exhaust passage are arranged in the needle body. The end of the vertical arm is a medicine pouring mouth. The upper part of the vertical arm is provided with an air sucking mouth. The utility model can add required medicine at any time at the course of drop with the advantage of convenient operation.

Description

A kind of closed transfusion drug feeding device

This utility model relates to the drug feeding device of a kind of medical apparatus and instruments-transfusion usefulness.

Present medical clinical in, the closed transfusion dosing, to make up a prescription mostly be to extract medicinal liquid with syringe out from the peace bottle of opening earlier, injects in the infusion bottle again.When the big or used drug variety of the amount of making up a prescription more for a long time, often can not be once to good, join again after must discharging a part of medicinal liquid, repeatedly aspirate, inject, workload is big, and is loaded down with trivial details and the delay time at stop is long, also easily causes liquid medicine contamination.

The purpose of this utility model provides a kind of closed transfusion drug feeding device that can inject medicinal liquid in the drop process at any time.

This utility model mainly is made of the normally closed switch 3 on T shape needle body 4, negative pressure gasbag 1 and the air bag exhaust tube 2, and negative pressure gasbag 1 top communicates with exhaust tube 2, and exhaust tube 2 connects an arm of T shape needle body 4, and normally closed switch 3 is set between the two; Another arm end of T shape needle body 4 is for inhaling medicine mouth 5, end overcoat closing cap 6; An alligator clamp 7 is installed at the vertical arm middle part of T shape needle body 4; In the needle body 4 two passes is arranged, one is dosing passage 8, is communicated with suction medicine mouth 5, and another is exhaust passage 9, communicates with exhaust tube 2; The end of needle body 4 vertical arms has the medicine-pouring port 10 that communicates with dosing passage 8, and its top opposite side has the air entry 11 that communicates with exhaust passage 9.

Normally closed switch 3 in this utility model is made up of a switch body 12, spring 13, plunger 14, pressure cap 15 etc., and switch body 12 centers are cylindrical cavity, and the bottom is spring 13 and limited block, and both sides respectively have a connection to communicate with cylindrical cavity; Plunger 14 becomes state movingly with the cavity inner wall of switch body 12, and the middle part is a cross through hole, and the top offside respectively has a longitudinal groove; Pressure cap 15 suits or be screwed suitable for reading in switch body 12, there are two corresponding projections of the flute with plunger 14 its inboard.

This utility model is simple in structure, and is easy to operate, if required medicine can not be once to intact, need not discharge a part of medicinal liquid and cause waste, can in the drop process, add; In the process of rescue patient, can add at any time in addition, to guarantee that rescue in time if be badly in need of medication.

Describe in detail below in conjunction with accompanying drawing:

Fig. 1 is a profile sketch map of the present utility model

Fig. 2 is a partial sectional view of the present utility model

Fig. 3 is the elevation cross-sectional view of normally closed switch in this utility model

Fig. 4 is the vertical view of normally closed switch in this utility model

Among the figure, 1 negative pressure gasbag, 2 exhaust tubes, 3 normally closed switch, 4T type needle body, 5 inhale medicine mouth, 6 closing caps, 7 alligator clamps, 8 dosing passages, 9 exhaust passages, 10 medicine-pouring ports, 11 air entries, 12 switch body, 13 springs, 14 plungers, 15 pressure caps.

During use, in the syringe needle insertion infusion bottle with T shape needle body, the air inlet pipe of infusion bottle is clamped on the alligator clamp, outside air enters in the infusion bottle by air inlet pipe when preventing to make up a prescription.Squeeze and hold negative pressure gasbag, gas in the capsule of draining; Pull up the closing cap that utilizes medical non-toxic plastic to make,, insert in the peace bottle of opening by last aseptic syringe needle, push normally closed switch again, gas is drawn into air bag from suction hole through the exhaust passage in the infusion bottle, forms negative pressure, and the medicinal liquid in the peace bottle just is drawn in the infusion bottle through dosing passage and dosing mouth like this.Heaved or the negative pressure deficiency as negative pressure gasbag, and made up a prescription when not finishing as yet, can squeeze once more and hold air bag, finished until making up a prescription.

Claims

1. closed transfusion drug feeding device, mainly by T shape needle body (4), normally closed switch (3) on negative pressure gasbag (1) and the air bag exhaust tube (2) constitutes, it is characterized in that: negative pressure gasbag (1) top communicates with exhaust tube (2), exhaust tube (2) connects an arm of T shape needle body (4), normally closed switch (3) is set between the two, this switch is by a switch body (12), spring (13), plunger (14), pressure cap compositions such as (15), switch body (12) center is a cylindrical cavity, the bottom is spring (13) and limited block, both sides respectively have a connection to communicate with cylindrical cavity, plunger (14) becomes state movingly with the cavity inner wall of switch body (12), the middle part is a cross through hole, the top offside respectively has a longitudinal groove, pressure cap (15) suit or be screwed suitable for reading in switch body (12), its inboard have two corresponding projections of flute with plunger (14); Another arm end of T shape needle body (4) is for inhaling medicine mouth (5), overcoat closing cap (6); An alligator clamp (7) is installed at the vertical arm middle part of T shape needle body (4); Needle body has two passes in (4), and one is and inhales the dosing passage (8) that medicine mouth (5) is communicated with, and another is the exhaust passage (9) that communicates with exhaust tube (2); Needle body (4) the vertically end of arm has the medicine-pouring port (10) that is communicated with dosing passage (8), and its top opposite side has the air entry (11) that communicates with the exhaust passage.