For the three-dimensional cut-out tap of enteral tube feed applicationBackground technology
The present invention relates to a kind of tap for enteral tube feed (tap is also cock) or cock (cock).
US6536742 discloses the embodiment of the three-way cock of the medical treatment device for being equipped with infusion solution.Cock has the shell of band pipeline accessories and is rotatably arranged in the stopper of shell.Two pipeline accessories in pipeline accessories are furnished with Rule cone joint to be attached pipeline.
In the past, once mistake was occurred to the patient accepting enteral tube feed.The pipe used is connected with three-way cock to carry out the administration of second liquid enteral product or the administration of enteral medicine to patient.But when existing pipe of raising for intestinal, medicine administration by three-dimensional cut-out tap that can be used by vein mistakenly, described three-dimensional cut-out tap is connected to carries out to patient the pipeline that intestinal raises.
In addition, the pipeline with three-way cock is also used to possible errors carry out vein supply to patient.For preventing these malpractice, a kind of novel system is needed to apply for enteral tube feed.
Summary of the invention
The present invention is intended to the safety improving these type cocks, especially avoids the mistake in of these cocks.
According to a first aspect of the invention, achieve a kind of cock, its stopper that there is shell and can rotate in shell, described shell and stopper are made of plastics, this cock comprises hands handle, described handle is non-rotatably connected to stopper to be used for rotating this stopper, and described shell comprises at least two pipeline accessories, it is characterized in that, at least one in described pipeline accessories has Luer-style concave end (Luer-likefemaleend), to couple with Luer-style male end (Luer-likemaleend), described concave end has the accessories apparatus extended from described concave end radial direction, and the external diameter of described concave end is 8.2-9.3mm so that evagination adnexa end that is that receive nipple or bayonet coupling.Adopt this diameter as a result, the conventional luer lock joint for intravenous applications cannot be connected to according to cock of the present invention, thus prevent ingredient administration device and misapply in intravenously administrable.
At least one pipeline accessories described is restricted to has Luer-style end.In the present invention, this means that this end is formed such end, the parts usually with luer lock evagination link attach to this end, but this end is of different sizes, and just do not match with it to make common luer lock part.This link of the present invention can be used to such as liquid enteral nutritional composition or component are supplied in stream.So just no longer may be supplied in specific stream by the composition of type of error, reason is that a link does not match with common luer lock.Therefore, this cock such as can be used as the multidirectional cock in tube feed device.So, can add in extra composition to such as tube feed.The part for infusing with conventional luer lock can not being attached, maybe the part being used for tube feed with Luer-style locking can not being attached to infusion set.Thus can mistake be avoided.On the other hand, other process and union piece are by with usually used identical, and this is particularly important for the situation of acting hurriedly in a messy situation in medical.
In one embodiment, its object is exactly connection of the present invention be used for tube feed device and contact esophagus and specifically directly enter in the similar application of stomach.Various part should not couple with the part of such as vein purposes mutually.
The most of known cock of type of the present invention has pipeline accessories, and described pipeline accessories comprises the end for attachment end cap, syringe, other pipes and other devices, accessory and device.These parts are widely known by the people in this area, are not described further herein.
In one embodiment, the external diameter that at least one pipeline accessories with Luer-style concave end has is approximately 7.3-8.2mm, is approximately 7.4+/-0.05mm in one embodiment.
In one embodiment, the external diameter that described accessories apparatus has is approximately 8.5mm, usual +/-0.1mm.
In one embodiment, accessories apparatus comprises the end flange of basic circumference.
In one embodiment, accessories apparatus comprises one group of substantially relative end notches, and the width that described recess has in one embodiment is approximately 2.9-3.3mm.The thickness that described recess has in one embodiment is approximately 1.2 – 1.4mm, is specifically about 1.3mm.
In one embodiment, shell and pipeline accessories injection mo(u)lding are integrated part.
In one embodiment, handle and stopper form as one part, and preferably injection mo(u)lding is integrated part.
In one embodiment, described shell comprises at least three pipeline accessories, thus limits multidirectional cock.
The invention still further relates to a kind of assembly, comprise at least one according to cock of the present invention and the part that matches with the described pipeline accessories of described cock, the female thread that described part has and the described pipeline accessories of the described Luer-style male end of band matches.
The invention still further relates to a kind of transfusion bag/medical treatment device with liquid, it comprise the pipe that adapts to described transfusion bag/medical treatment device and be attached to described pipe at least one according to cock of the present invention.
The invention still further relates to a kind of unit or assembly, comprise describe in description and/or the one or more features shown in accompanying drawing.The invention still further relates to a kind of method, comprise describe in description and/or the one or more features shown in accompanying drawing.
The various aspects illustrated in this patent are combinable provides other advantages.In addition, some features can be used as the basis of one or more divisional application.
Accompanying drawing explanation
Make for illustrating the present invention further with reference to the embodiment of cock and this cock shown in the drawings, in the accompanying drawings:
Fig. 1 shows the top view of three-way cock;
Fig. 2 shows the side view of Fig. 1;
Fig. 3 shows the bottom view of Fig. 1;
Fig. 4 shows the cross section of Fig. 1;
Fig. 5 shows the cross section of Fig. 1 stopper;
Fig. 6 shows the front view of the pipeline accessories end of band Luer-style male end;
Fig. 7 shows the top view of the three-way cock of the band end cap shown in Fig. 1, has tapped Luer-style indent part;
Fig. 8 shows the detail view of end cap shown in Fig. 7; And
Fig. 9 shows the cross-sectional view of end cap shown in Fig. 8 to show its female thread.
Detailed description of the invention
Fig. 1 shows the top view of the three-way cock 1 according to the embodiment of the present invention.The design of three-way cock 1 is as follows.This three-way cock has the cylinder blanket 2 of basic hollow core.Shell in the present embodiment comprises three pipeline accessories 4,5,6.Under normal circumstances, shell 2 injection mo(u)lding comprising pipeline accessories 4,5,6 is a single-piece.Fig. 4 shows this point.Pipeline accessories 4,5,6 has interior bore which 7,8,9 respectively, and in each, bore which is connected to the interior cylindrical bore which 10 of the cylindrical member 3 of shell 2 by the respective openings 22,21,23 in the circumferential wall of its cylindrical member 3.
Stopper 12 is rotatably assembled to the cylindrical member 3 of shell 2 about axis 13.In the present embodiment, stopper 12 is simply snap-fitted in the cylindrical member 3 of shell 2 by circumferential bead or ridge 17 and corresponding circumferential recess 26.This cooperation is widely known by the people, and also can use the similar cooperation of other types.Be equipped with one or more groove such as can to stopper 12, be equipped with one or more corresponding bead or ridge to shell.Therefore can provide liquid-tight sealing, stopper 12 can be rotated about axis 13 in shell 2.The cylindrical member 11 of stopper 12 has hollow core 18, thus provides circumferential wall to cylindrical member 11.
Stopper is furnished with one or more passage, so that according to the position of rotation of stopper, and optionally connecting line adnexa or block one or more pipeline accessories.In this three-dimensional embodiment, the cylindrical member 11 of stopper 12 has opening or passage 19,24 and 25.In FIG, pipeline accessories 4 is in during fluid is connected with 5 by the opening 24 and 25 of the cylindrical member 11 of stopper 12.Fig. 4 shows the cross section shown in Fig. 1.It is how to form integral piece that this cross section clearly illustrates the stopper 12 comprising handle 14,15 and 16.The cylindrical member 3 of shell 2 has circumferential recess 26.
Pipeline accessories 6 in embodiment illustrated in fig. 1 is furnished with Luer-style concave end (femaleend) or link.As mentioned above, Luer-style refers to and is technically similar to standard luer fittings (also referred to as luer lock), but as detailed below, but its size is different.In the present embodiment, pipeline accessories 6 is substantially cylindrical and has the usual outer diameter D 3 of 7.4mm.Pipeline accessories in the present embodiment is furnished with two relative end notches 20, to allow female thread and fastener to be installed in pipeline accessories.In the present embodiment, the outer diameter D of these recesses in the present embodiment is 8.5mm.Recess in the present embodiment is the end notches being positioned at pipeline accessories 6 end, and the length direction along pipeline accessories 6 extends about 1.3mm.From circumferential sense, these two recesses all extend the length D5 of about 2.9-3.3mm.Fig. 6 shows the part in these sizes with the projection pattern of pipeline accessories 6 end.In the present embodiment, the raceway groove 9 of pipeline accessories 6 is fine taper, and its diameter increases towards its attachment end.In this end, diameter D2 is approximately 5mm.Near the cylindrical member 3 of shell 2, its diameter is decreased to about 4.45mm.This taper extends about 9mm.
Fig. 5 shows the cross section with the stopper 12 of cross-section normal shown in Fig. 4.
In the figure 7, pipeline accessories 6 is attached with part.In this figure, end cap 30 is assemblied in pipeline accessories 6.End cap 30 is furnished with end band (endstrap) 31, and it allows end cap 30 to be attached to other elements again for loss.Such as before other parts such as element or similar pipe of attachment, the container of such as fluid pouch and so on, pipe can be connected to or even utilize its end eye (endeye) to be connected to pipeline accessories 4 or 5.Fig. 8 and 9 shows in detail end cap 30.End cap 30 has female thread 33.The size of this screw thread can be installed into the end of pipeline accessories 6.Close more reliably for providing, end cap 30 is furnished with extension 32, extends in the raceway groove 9 of pipeline accessories 6, and in fact, it (is specially in liquid-tight manner) hermetically and matches with raceway groove 9.
Can clearly find out from Fig. 7-9, in order to match with female thread, accessories apparatus (being herein recess 20) also can be formed as the external screw thread on pipeline accessories 6 outer surface.But the size mentioned in the early time still remains unchanged.
In operation, cock can be used in the pipe of drawing from tube feed container (such as comprising the sack of tube feed).Therefore, pipe leads to cock 1 from sack, and is connected in pipeline accessories 4 or 5.Another pipe is drawn from cock 1, guides patient into from relative pipeline accessories 5 or 4.After removing end cap 30, another pipe of syringe or delivering medicament such as can be attached to pipeline accessories 6.When clockwise (relative to Fig. 1) rotary plug 12 until handle piece 16 align with pipeline accessories 4 and handle piece 14 aligns with pipeline accessories 6 time, pipeline accessories 6 is just fluidly connected with pipeline accessories 4.If the pipe of such as patient's stomach is guided in pipeline accessories 4 carrying into, the composition of such as medicament and so on just can be supplied to patient.Upon administration, handle is utilized just stopper can be set to the state shown in Fig. 1.Then just removable syringe or other pipes, then cover end cap 30.
It is clear that comprise above-mentioned explanation and accompanying drawing just in order to some embodiments of the present invention are described, do not limit the scope of the invention.Based on the disclosure, those skilled in the art can understand other embodiments many, and described embodiment all drops in protection scope of the present invention and spirit, and they are apparent combinations of prior art and the application's disclosure.