CN1119548A

CN1119548A - Aspiratory catheter

Info

Publication number: CN1119548A
Application number: CN95117223A
Authority: CN
Inventors: 田熊规方
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-10-05
Filing date: 1995-10-04
Publication date: 1996-04-03
Also published as: SE9503441D0; JP2742765B2; SE9503441L; JPH08103492A; DE19536118A1

Abstract

The invention relates to an improved pumping device canal used for pumping goo such as phlegm from bronchia of a live body. The pumping device canal has a multi-tube structure (1), which comprises a pumping tube (2) and a siphon (3). The pumping tube (2) and a bypass tube (3) are branched at a base (7), and each of which is provided with an independent tail and the two tubes are further integrated into a whole through a middle-clapboard (4). The pumping tube (2) and the bypass tube (3) are opened at a front tip of the canal to form a short path (5) connecting the pumping tube (2) and the bypass tube (3) by part penetrating front tip (9) of the middle-clapboard (4) of the pumping tube (2) and the bypass tube (3).

Description

Aspiratory catheter

The present invention relates to be applied to the conduit of a kind of tubulose surgical instruments of Clinical Surgery, a kind of specifically Aspiratory catheter that can on purpose aspirate certain material.Its model of action is to use suction pump, and by flushing, in sucking-off air, water or medicinal liquid, the stickum that sucking-off need be removed from the respiratory apparatus of body such as bronchus is as expectorant, hematoma or suppuration thing etc.

Up to now, the Aspiratory catheter that is used for the routine of respiratory apparatus in Clinical Surgery is formed by the single tube structure that comprises a body or by the multiple tubular construction that comprises the multitube body.Using the single hose suction pipe, is the inside of suction tube under reduced pressure, and stickum is shifted out from the conduit front portion.The conduit of multiple tubular construction then is as suction catheter with arbitrary body wherein, aspirate from this pipe with pressure reducing mode, and remaining body is managed as the side, in order to feed medicinal liquid, air or to insert medical apparatus and instruments, thereby in the sucking-off predetermined substance, remove this material from the front portion of suction catheter.

In addition, according to No. 84307/1993 record of the open communique of Japan Patent, under normal pressure, near the coupling with it suction catheter of drawing stickum of the syringe of liquid medicine injection.Owing to carry out injecting liquid drug from syringe, rely on souring, thick substances can be removed from the front end of suction catheter.

But, for aforesaid conventional Aspiratory catheter, no matter attract operation by the apparatus of single tube or multiple tubular construction, all abnormal situation might appear in human body, and this is because the catheter proximal end structure of suction catheter (51) is identical.That is to say, when stickum (B ') as expectorant, when under swabbing action, shifting out pulmonary branches trachea (A '), this material (B ') is in the outwards mobile process of an end of a certain conduit of suction catheter, catheter interior is in a kind of state (Fig. 7 (a)-(c)) of decompression, things turn out contrary to one's wishes sometimes in the front portion of conduit ground inhaled at a certain bronchus (A ') intracavity.Because the anterior identical structure of suction catheter, its conduit (51) front end is difficult for breaking away from bronchial lumen.Therefore, the bronchus front portion that suction has Aspiratory catheter produces strong physiological negative pressure under the suction function that is directly attracted.Can produce the influence be difficult to expect to human body like this, as dyspnea or cause pneumonia.

On the other hand, for a kind of conventional Aspiratory catheter in back, it is provided with a syringe to the sucking-off position liquid medicine injection of the base portion of pipe or air etc. under pressure, so that under the swabbing action that is produced by injection stickum is being shifted out.As seen conduit of the present invention and aforesaid conventional conduit shift out technical obviously different.Its difference is that the technology that shifts out substantially of conventional conduit just is moved out of goo such as expectorant by a suction catheter under sucking action.Even under the normal function state, aspirate stickum, and aforesaid first kind of conventional conduit still may cause unfavorable condition in body, this is because the structure of its conduit forward tip is identical.

In addition, make conduit inhale Aspiratory catheter as this preventing owing to being inhaled into intracavity in this organ-tissue, also selling on the market and a kind ofly produced by Terumo limited company, is the gastric canal of " SAFEED " (registering No. 1280771) at the Japan registration trade mark.The composition mode of this conduit is: the catheter proximal end tip is the twin-tube structure, and promptly an other Guan Yuyi suction catheter is arranged side by side.When catheter proximal end is closed, between suction pipe and other pipe, form short circuit, and then form a series of holes in the side of suction catheter.Certainly, use this conduit can prevent from conduit is inserted in the histoorgan of body.But because attraction of this suction pump and eliminating predetermined substance are the sides by conduit, it is difficult finishing this attraction operation in this elongated organ of bronchus.Therefore this conduit is only applicable to pipette material to a certain extent from bigger organ of relative volume such as stomach.Should point out that the forward tip structure that is used for the conduit of respiratory apparatus and the aforesaid conduit that only is used for digestive system among the present invention is different on essence and function.

Based on above-mentioned idea, the object of the present invention is to provide a kind of improved, Aspiratory catheter safely and effectively.

This purpose can realize by the Aspiratory catheter with a fixed structure: suction catheter and other vessel branches sample are arranged and are separate at the conduit base portion, by a median septum conduit are linked to be an integral body in the conduit forward tip.Be characterized in suction catheter and other tube opening when its forward tip, between two pipes, form short circuit by penetrating the median septum of separating two pipes.The conduit that perhaps has a multitube structure by a suction catheter and more than two other pipe form.Suction catheter and other vessel branches are arranged and are separate at the conduit base portion, by a median septum conduit is linked to be an integral body in the conduit forward tip, be characterized in that suction catheter and other pipe are opened on its forward tip respectively, form short circuit by the forward tip that penetrates median septum between pipe.

A forward tip that is characterised in that by the partial penetration median septum of conduit of the present invention is provided with one or more tiny groove in the median septum forward tip.

The suction catheter and the other pipe that are opened on the conduit forward tip are respectively separated by median septum, and the forward tip of median septum is formed short circuit by partial penetration.When suction catheter is in negative pressure state, other pipe also is in negative pressure state by short circuit.So when side pipe base portion placed air, air can be inhaled into other pipe, and was same, base portion to be managed on the side place normal saline or flushing medicinal liquid, this normal saline or flushing can be inhaled into other pipe with medicinal liquid.Therefore needn't worry that the conduit forward tip inhales in a certain bronchial lumen.Can particularly under having normal saline or wash away with the situation of medicinal liquid, suction can finish easily and effectively by the moistening goo for the extraction of stickum such as expectorant, suppuration thing or hematoma etc. in addition.

In addition, the median septum forward tip is formed one or more tiny spill short circuit holes by partial penetration.When air or medicinal liquid by the time, median septum can vibrate.And when suction catheter is in negative pressure state with sucking-off goo such as expectorant, because the vibration of median septum can prevent that the goo of being drawn from blocking in the part.Therefore can pass through the tip of suction tube reposefully with the goo sucking-off.

In addition, short circuit is to be formed by the front end tip that penetrates median septum basically, because the short circuit hole shape is different, goos such as expectorant can not hinder in the part, and can shift out effectively reposefully.

Brief Description Of Drawings

Fig. 1 is an Aspiratory catheter perspective view of the present invention.

Fig. 2 (a) is the front view of this conduit forward tip of expression.

Fig. 2 (b) is the profile of this conduit forward tip of expression along Fig. 2 (a) cathetus I-I.

Fig. 2 (c) is the profile of this conduit forward tip of expression along Fig. 2 (a) cathetus I '-I '.

Fig. 3 is the part sectioned view of expression Aspiratory catheter embodiment of the present invention.

Fig. 4 (a) is the front view of Aspiratory catheter forward tip in expression another embodiment of the present invention.

Fig. 4 (b) is the profile of this conduit forward tip of expression along Fig. 4 (a) cathetus II-II.

Fig. 4 (c) is the profile of this conduit forward tip of expression along Fig. 4 (a) cathetus II '-II '.

Fig. 5 (a) draws the front view of Aspiratory catheter forward tip in expression another embodiment of the present invention.

Fig. 5 (b) is the profile of this conduit forward tip of expression along Fig. 5 (a) cathetus III-III.

Fig. 5 (c) is the profile of this conduit forward tip of expression along Fig. 5 (a) cathetus III '-III '.

Fig. 6 (a) is the front view of expression another embodiment of the present invention Aspiratory catheter forward tip.

Fig. 6 (b) is the profile of this conduit forward tip of expression along Fig. 6 (a) cathetus IV-IV.

Fig. 6 (c) is the profile of this conduit forward tip of expression along Fig. 6 (a) cathetus IV '-IV '.

Fig. 7 (a), (b), (c) to be the part sectioned view of the conventional Aspiratory catheter embodiment of expression.

Fig. 8 is the perspective view of multitube structure Aspiratory catheter among expression the present invention.

Describe embodiments of the invention with reference to the accompanying drawings in detail.

Shown in Fig. 1-2, double pipe structure Aspiratory catheter of the present invention (1) is that suction catheter (2) and other pipe (3) form independently terminal mutually in the arrangement of base portion branch sample, and in its forward tip, suction catheter (2) and other pipe (3) are enjoyed common part by median septum (4).Suction catheter (2) and other pipe (3) are opened on forward tip (9) respectively, and median septum (4) partial penetration of separating suction catheter (2) and other pipe (3) forms the U-shaped short circuit (5) that is connected suction catheter (2) and other pipe (3).

Press the conduit (1) that said structure constitutes, in pipe (2), impose negative pressure when be connected in suction catheter (2) with a suction pump (not shown), as shown in Figure 3, the inside of suction catheter (2) will be in negative pressure state, accordingly, the stickum (B) of obstruction bronchus (A) is inhaled into the forward tip (9) of the suction catheter (2) of conduit (1) as expectorant.Simultaneously, go up the short circuit (5) that forms by median septum (4), under the suction function, air and medicinal liquid are inhaled into suction catheter (2) in suction catheter (2).Like this, the forward tip (9) of suction catheter (2) can be by total blockage.

In addition, air that is inhaled into or medicinal liquid utilize flushing action to be easy to attract goo, are inhaled forward tip (9) in conduit (1) as expectorant.

And the short circuit hole that connects suction catheter and other pipe can be different shape, and its big I makes it often keep unimpeded, as long as goos such as expectorant can block the short circuit hole during near the Aspiratory catheter forward tip necessarily.

As shown in Figure 4, a short circuit (15) can be formed by the forward tip that penetrates median septum (14) (19 ').Among Fig. 6, tiny short circuit hole (25) can be positioned at the forward tip (29 ') of median septum (24) or the forward tip (39 ') that two tiny short circuit holes are positioned at median septum (34).

And for example shown in Figure 8, when having a plurality of other pipes (43a), (43b), then air and a series of medicinal liquid can be sucked respectively so that these medicinal liquids tip mixes forwardly adapts to needs widely like this.Among Fig. 8,42 is suction catheters, the 46th, and the top of described other pipe.45 are short circuit hole, the 44th, median septum, the 49th, conduit forward tip.

As mentioned above, compare, use the Aspiratory catheter of the present invention can be with stickum such as expectorant sucking-off easily under the souring of air or medicinal liquid with conventional single hose Aspiratory catheter.Can avoid simultaneously because when inhaling expectorant in the lung because the atelectatic state that bronchial fragility causes.

In addition, when the opening of top end (6) was managed on the sealing side, Aspiratory catheter of the present invention can use as the single hose Aspiratory catheter.

Claims

1. Aspiratory catheter, it consists of that suction catheter and other vessel branches sample are arranged and is separate at the conduit base portion, by a median septum conduit is linked to be an integral body in the conduit forward tip.It is characterized in that suction catheter and other tube opening when its forward tip, between two pipes, form short circuit by penetrating the median septum of separating two pipes.

2. the Aspiratory catheter that has the multitube structure, by a suction catheter and more than two other pipe form.Suction catheter and other vessel branches sample are arranged and are separate at the conduit base portion, by a median septum conduit is linked to be an integral body in the conduit forward tip, it is characterized in that suction catheter and other tube opening when its forward tip, form short circuit by the median septum that penetrates separating tube between pipe.

3. the Aspiratory catheter of each record in the claim 1 or 2, its short circuit is to be formed by its median septum forward tip of partial penetration.

4. the Aspiratory catheter of each record in the claim 1 or 2, its short circuit is by partial penetration median septum forward tip, forms one or more grooves and produces.

5. the Aspiratory catheter of each record in the claim 1 or 2, its short circuit is to form by penetrating its forward tip on the whole.

6. the Aspiratory catheter of each record in the claim 1 or 2 when the other pipe of sealing base portion opening, can be used as the single hose Aspiratory catheter and uses.

7. the Aspiratory catheter of record in the claim 2 can suck air or a series of medicinal liquid respectively, and it is mixed in the conduit forward tip.