CN85202808U - Injector for intravenous drips - Google Patents

Abstract

The utility model provides an injector for intravenous drips for medical use, which uses flowing liquid as dynamic force. The utility model is mainly used for solving the problems of complicated operation, probably generated contamination for catheters, complication of artificial pneumothorax and air embolism, placement of silicone tubes, etc. of the existing various intravenous drip intubations, and can raise the blood vessel paracentesis success ratio and the intubation success ratio. The utility model is characterized in that a common paracentesis needle controlled by a special three-direction three-way valve makes the blood backing and tube injection respectively performed. When a silicone tube needs to be inserted in the utility model, the silicone tube freely stretches and is closed in a lead-in sleeve tube, and the length of the silicone tube can be freely chosen. The utility model can be used for shallow and deep vein paracentesis intubation or relative therapy on the intubation of right hearts and the pulmonary artery on clinic.

Description

Injector for intravenous drips

This utility model is a kind of improved medical vein puncture sputtering tube device, is applicable to capable superficial vein of hospital clinical or dark venous cannulation.

Still in traditional venipuncture intubation of using, be successfully to retreat down syringe to vascular puncture at present, in pin, insert silica gel tube rapidly with common single chamber puncture needle; This method might be polluted silica gel tube or serious And such as artificial pneumothorax, air embolism takes place and send out disease because of belonging to open-sky technique, and very soft because of silica gel tube, the power that is hampered slightly promptly can't be inserted, and causes this method successful intubation lower.Present " hydraulic giant " and the plastics products of using " formula of surging venipuncture needle ", both all require the silica gel tube head end to place in the puncture needle in advance, in case withdrawing from i.e. inconvenience uses, and silica gel body afterbody is all tortuous in syringe or plastic blister, the obstruction blood back makes and judges whether to penetrate blood vessel generation difficulty sometimes when not only puncturing, and tortuous silica gel tube takes place often tangle mutually and can't inject blood vessel, and therefore the length of silica gel tube also be restricted.Simultaneously, " hydraulic giant " genealogy of law semi open model still has the silica gel tube pollution takes place, the possibility of pneumothorax, air embolism, and the system of moulding " venipuncture needle surges " is disposable commodity in use, costs an arm and a leg, extensive use is restricted.

The purpose of this utility model provide a kind of formula of surging, totally-enclosed, can use repeatedly, venipuncture intubation instrument that can the conversion pipe path in the use.

This utility model is such realization: ordinary syringe connects one of a special three-dimensional three-way valve door, valve face down bonding and connects a common puncture needle body, and the importing of the interior dress of a random length silica gel tube is telescopic joint between two paths that liquid penetrates.As shown: when reversing handle (5) during, the needle body (1) in level position backward, blood back hole (10), and syringe (8), needle stand (7) is communicated with, and this moment is puncture vessel according to a conventional method.After seeing blood back, reversing handle (5) is put upwards vertical position, this moment syringe (8), needle stand (7), liquid shoot hole (6), needle stand (3) imports sleeve pipe (14), needle stand (13), penetrate pore (11), the needle body (1) is linked to be path, and former blood back path cuts off.The liquid pressurized penetrates forward in the pushing syringe stamen (9), syringe (8), and flowing liquid is brought silica gel tube (15) into blood vessel and advanced with blood is floating forward, and silica gel tube tail end holdout device (2) is hindered incarceration in needle stand (13).Stir handle more backward, then in valve piston and valve seat adverse movement, the sharp-edged of penetrating pore (11) cuts off the silica gel tube afterbody, and sputtering tube device can be withdrawed from, and silica gel tube is then stayed in the blood vessel, and silica gel tube can carry out action required after by the tack pin.

When needing to change syringe or liquid in the puncture blood back process, handle is placed vertical position, below, all pipelines all do not communicate in the valve at this moment, and keep its sealing.

In the time of must liquid make-up in penetrating the pipe process, can the lateral outer liquid filling hole of needle stand (3) (4) is relative with the interior liquid filling hole (16) of sleeve pipe (14) tail end, insertion tack pin liquid make-up.After liquid feeding finishes with sleeve pipe tail end half-twist, even this path blockade.

This utility model has following advantage: 1. totally enclosed type operation is difficult for silica gel tube taking place to pollute and causing artificial pneumothorax, air embolism etc. Send out disease.2. the blood back path with penetrate the pipe path and separate, be convenient to judge whether to penetrate blood vessel and help raising and pierce success rate.Be easy to be transformed into after puncturing successfully and penetrate the pipe path, do not need multioperation to deviate from the blood vessel chance to reduce puncture needle, and silica gel tube is not tortuous, intravasation helps improving successful intubation easily.3. be the closed conduit of pressure source with the syringe, pressure can be controlled arbitrarily, and it is quick and labour-saving to penetrate pipe, and may command is penetrated pipe speed.But 4. one man operation, disconnected automatically pipe and do not need to be equipped with in addition sterile scissors, easy to use.But 5. routine disinfection uses repeatedly, only consumes small amount of liquid and requisite silica gel tube at every turn, and is very economical, and handling safety simply is easy to grasp, thus make venous cannulation this comparatively complicated technology become simple.6. make simply, be convenient to produce by batch.

This utility model can be done dark intravenous hyperalimentation therapy or measurement of central venous pressure for the capable deep vein puncture intubate of hospital clinical; Still available this utility model is inserted than Great Wall Software's conduit to the right heart or pulmonary artery and is carried out relevant operation of diagnosis and treatment; In venesection, run into silica gel tube and can not insert at need, use this utility model will make intubate very easy; Infuse for the need long period, or a large amount of transfusions, or the patient of blood transfusion, need guarantee the reliable person of venous patient path for major operation, use the capable superficial vein of this utility model to pierce intubate and can reduce puncture time, allow the transfusion limb activity and to reduce patient painful and make venous channel reliable.

Accompanying drawing is a venipuncture sputtering tube device perspective view, comprising: the needle body (1), holdout device (2) needle stand (3), outer liquid filling hole (4), reversing handle (5), liquid shoot hole (6), needle stand (7), syringe (8), syringe stamen (9), pore (11) is penetrated in blood back hole (10), valve seat (12), needle stand (13), import sleeve pipe (14), silica gel tube (15), interior liquid filling hole (16).

Be that embodiment illustrates it to adopt No. 18 puncture needles to penetrate 1.3 * 0.9mm silica gel tube below: the 10ml syringe, No. 18 the common venipuncture needle body is welded in valve one side, and the valve overall dimensions is 0.9 * 0.9 * 0.9cm.Handle hole (10) when making progress vertical position is the straight hole that runs through valve piston, and is parallel with handle, diameter 1mm, hole (11) is diameter 16 mm straight holes, diagonal runs through piston, and is vertical with hole (10), with the extended line angle of cut of needle stand (7) less than 30 °, the two ends and the needle body (1), needle stand (13) is level and smooth to be communicated with, and hole (6) are the hole, right angle, diameter 12mm, its two arm can be partial to handle side, but two ends communicate with needle stand (3) (7).Distance between the collar extension in above-mentioned three holes should be greater than 1.2mm, and needle stand (13) internal diameter is identical with hole (11) internal diameter.Import sleeve pipe and select for use quality hard slightly, flexible and difficult folding plastics tubing, external diameter is equivalent to the needle stand internal diameter, and internal diameter is greater than the external diameter of holdout device (2), and two ends connect metal joint, and the joint inner chamber enters the mouth over against needle stand (13).Liquid filling hole is at joint and needle stand (3) when combining closely within on the end connector, just external liquid filling hole (4), and diameter is equivalent to the puncture needle external diameter No. 9.

Claims (7)

1, pipe unit is penetrated in venipuncture, comprises puncture needle, silica gel tube, syringe.Feature of the present utility model is the three-dimensional three-way valve door of control puncture needle and the importing sleeve pipe of interior dress silica gel tube.

2, by the described device of claim 1, it is characterized in that duct (6), (10), (11) of not intercommunication at an angle to each other in the three-dimensional three-way valve door, turning handle (5) can make different pipelines be communicated with respectively.

3, by claim 1,2 described devices, it is characterized in that the blood back path of needle stand (7), (13) representative and penetrating the angle of managing between the path is 10 °～30 °.

4,, it is characterized in that penetrating the sharp-edged that cuts off silica gel tube between pore (11) and valve seat (12) automatically by claim 1,2 described devices.

5,, it is characterized in that to make the silica gel tube of random length can be free, stretch and place and needn't crumpled importing sleeve pipe by the described device of claim 1.

6,, it is characterized in that forming the interior liquid filling hole (16) of importing sleeve pipe afterbody and needle stand (3) outside outer liquid filling hole (4) of liquid feeding path by claim 1,5 described devices.

7, by claim 1,5 described devices, it is characterized in that the silica gel tube tail end makes with the cover connection, diameter holdout device (2) greater than needle stand (13) internal diameter, inaccessible silica gel tube chamber closely and is not oppressed in this device splicing.

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