The specific embodiment
With reference to accompanying drawing, particularly with reference to Fig. 1, this figure represents to be used for according to the present invention the whole vertical view of an embodiment of the apparatus of fit and remove locking device on the end of tube element.
It comprises container 1 and is used for container 1 is placed to the adapter 2 that is communicated with tube element 3 fluids.
Container 1 is provided with and covers 4, and the rotary actuator of handle 5 forms is installed on this lid 4.Lid also has two Reference numerals 6,7, and its function will become clearly later.Container 1 two pipelines 8,9 through existing on its perimeter wall and for example quantity are that other tube element (not shown) fluid of two is communicated with.
Adapter 2 comprises the sleeve 10 on the joint 11 that is assembled to container 1, and being illustrated in is among Fig. 3 to 7 of cross section of apparatus.Sleeve 10 (with respect to container 1) is a long way off sealed by wall 12, and this wall 12 is passed in the end 13 of visible tube element 3 in Fig. 3-7.Have whole handgrip 14 on the tube element 3, this handgrip 14 has proximal stop 15 (with respect to container 1), and this proximal stop 15 is around tube element 3.Helical spring 16 is installed between the proximal stop 15 of the distal end wall 12 of sleeve 10 and handgrip 14.
With reference to Fig. 2, Fig. 2 is the cardinal principle longitudinal cross-section by the plane A-A of the apparatus of Fig. 1, the inside of this expression container 1.Hollow container 1 has bottom 16 and perimeter wall 17 substantially, and this bottom 16 and perimeter wall 17 are delimited cylindrical interior chamber 18 with lid 4.Rotation platform 19 is installed in cylindrical chamber 18 inside, preferably near bottom 16.For easily manufactured, advantageously, container 1 is columniform, as rotation platform 19, but does not get rid of other shape, even for same internal chamber 18.
Platform 19 centrally has boss 20 below its base, this boss 20 is assemblied in the blind hole 21, and this blind hole 21 is formed in the bottom 16 of container accordingly.Platform 19 has unitary pin 22, and this unitary pin 22 is stretched out through the through hole 23 built in it from the lid 4 of container 1.Handle 5 is fixed on the pin 22, thereby by the artificial effect on handle, platform 19 can be with respect to the inner lateral surfaces rotation of container, and this inner lateral surfaces is by 24 indications.Because during manufacture assembly problem, be connected on the pin 22 that stretches out from lid by means of the handle 5 that is threaded of part, fixed with lock definitely then.Nature, local melting by pin 22 and handle 5 or bonding can provide fixed optional form, and condition is that the material that constitutes these parts is plastics as suggestion.
One end of handle 5 arrives point 25, and point 25 is used to indicate the position of the particular element of the position, particularly rigidity of rotation platform apparatus mounted thereto.
Also with reference to Fig. 3,4,5,6 and 7, the described element that rigidity is installed on the rotation platform 19 comprises: admit housing 26, it can admit and keep first locking device 27 extracted from the end 13 of tube element 3; With release housing 28, after first locking device 27 had been extracted, it can comprise and discharge second locking device 29 in the end 13 of tube element 3.Admit and discharge housing 26,28 to be radially positioned on the platform, and have the opening of the passage of the inner lateral surfaces 24 that is used for locking device turning containers 1.In the embodiment that describes, housing has longitudinal axis, this longitudinal axis also with exterior side surfaces quadratures by 40 indications.For the sake of clarity, locking device 27,29 is not cut open in the drawings.
Locking device 27,29 can be identical, and comprises tip 30 and the tail end 31 relative with the tip, and this tip 30 plans to be received in the end 13 of tube element 3.
Suitably the tip 30 of taper has the top formula shape of the end that is used for being inserted in the cylindrical tube linear element, although the drain cross section and other therefore most advanced and sophisticated shape.
First circumferential groove that is used for O shape circle 32 is provided at tip 30, to create fluid-tight in the joint of tube element 3.
Locking device 27,29 preferably has cylinder 33 substantially, although it can have other shape.Second circumferential groove that is used for O shape circle 34 is provided at cylinder 33.And, still on the side surface of cylinder 33, periphery recess 35 being arranged, this periphery recess 35 preferably stops in the close undercutting 36 of tail end 31.The function of various piece will be become clearly by the remainder of describing.
With reference to Fig. 3, Fig. 3 is the cross section according to the embodiment of apparatus of the present invention, this expression platform 19 with Fig. 2 in apparatus in the corresponding position, position represented.
Thereby the configuration that discharges housing 28 is that its longitudinal axis parallels with the main shaft of handle 5, and is positioned on the quadrant of being represented by lid 4, in the position of reference mark 6.Admit the configuration of housing 26 to be, the main shaft of its longitudinal axis and handle 5 is perpendicular, and is positioned on the quadrant of being represented by lid 4, in the position of reference mark 7.
Should be appreciated that it is not binding that orthogonality described above is arranged, and the axis of two housings 26,28 can form the angle except that the right angle between them.Only importantly, anyone who sees container from the outside can both understand that one of locking device when or another housing 26,28 are coaxial with the end 13 of tube element 3 in such a way, thereby the tip 30 of locking device 27,29 is also coaxial with it.
Detailed inspection is admitted and is discharged housing 26,28, can see that they differ from one another, even both have and the corresponding shape of the shape of locking device.Admit housing 26 to have the preferably holding device of the form of circumference fin 37 in inside near its bottom, this circumference fin 37 is given prominence in admitting housing 26 and to its bottom angled.When locking device 27 is received in when admitting in the housing 26, as seeing later on, 37 plans of circumference fin are inserted in the periphery recess 35 of locking device 27 and with the latter's undercutting 36 and engage.
On the contrary, see to such an extent that more clearly discharge housing 28 and have the preferably stop device of the form of circumference fin 38 in inside at the cardinal principle middle position in Fig. 2, this circumference fin 38 is outstanding and to its opening side surface 24 of the cylindrical chamber 18 of container 1 (promptly to) inclination in discharging housing 28.When locking device 29 when the inside that discharges housing 28 discharges, as will see later on, circumference fin 38 plans to bend towards the inner surface of housing, and locking device 29 is come out, and prevents that it from reentering release housing 28.
In order can to come out, be included in inner locking device 29 from the flexible member admittance thrust between the bottom (not giving Reference numeral) of pre-aligned tail end 31 at locking device 29 and housing from discharging housing 28.Flexible member has been expressed as many flat springs 41, and this spring 41 also can easily be made with plastics.Flat spring 41 can make locking device 29 to joint 11 preset distance of advancing, and obviously this moment, locking device was adjacent with joint 11.
In the layout of Fig. 2, the release housing 28 of locking device 29 is positioned on the platform 19 adjacent with reference mark 6.Reason for this reason, the thrust that is applied by flat spring 41 can guide the tip 30 of locking device 29 to the inner lateral surfaces 24 against container 1.In order to prevent may reversing of tip 30, in order to make locking device 29 and joint 11 adjacent so that discharge on its end 13 during the rotatable platform at tube element 3, make the fixed upper and lower of bump pair of parallel, the front portion cam of the body 33 of locking device 29, this cam by 42 and 43 indications, has circular arc respectively.
The opening of circular arc stationary cam 42,43 adjacent joints 11 does not exist, thereby allows locking device to go out under the effect of flat spring 41.
As shown in Fig. 3 to 7, adapter 2 is a screw-type for the connection of container 1, has at the female thread on the sleeve 10 44 with at the corresponding external screw thread 45 on the outstanding joint 11 in the outside of the side outer surface 40 of container 1.
Obviously, also according to various uses, can expect other type of attachment for those skilled in the art according to apparatus of the present invention.
The function of apparatus is as follows.
In the time must replacing locking device with the end 13 of tube element 3, apparatus of the present invention is provided with single locking device in inside, with 29 indications, this discharges housing 28 in the position by 6 indications of the reference mark on the lid 4 at container to this locking device in discharging housing 28.It is the sleeve 10 (Fig. 3) by backing out the adapter on joint 11 then, is applied on the tube element 3, and this tube element 3 is provided with its locking device 27 in its end 13.Act on the handgrip 14 by the effect that overcomes spring 16, advanced in joint 11 in the end 13 of tube element, locking device 27 is taken to the bottom (Fig. 4) of admitting housing 26 up to it.The part of the body 33 of locking device 27 thereby overcome and keep fin 37, this maintenance fin 37 to the inner elastomeric of housing give prominence to, and engage with undercutting 36, keep them.For all operations necessary, the handle 5 that turns clockwise admits housing 26 movable one-tenth to make the opening freedom of joint 11 less than 90 °.If housing 26 is the cylinders that all seal in all sides except that opening, then opening is also sealed by the sidewall 17 of container 1 now.
When new locking device must be applied on the end 13 of tube element 3, handle 5 turned clockwise, and overlapped with reference mark 7 up to its point 25.Thereby the release housing 28 of the locking device 29 on platform 19 takes to adjacent with the opening of joint 11.The locking device 29 that stops up by stationary cam 42,43 after Fig. 5 is illustrated in and advances by flat spring 41, no longer.Can see that in its process near the end 13 of tube element 3, body 33 is crossed stop fin 38, this stop fin 38 is the backstroke of resistance locking device 29 now.
As shown in Figure 6, on the loading handgrip 14 that acts on spring 16, the end 13 of tube element 3 is taken to nearer, up to its tip 30 around locking device 29.O-ring seals makes tube element 3 can keep engaging with locking device 29, thus the contrast of utilization and stop fin 38.At this moment, it is just enough that the user discharges the power that is applied on the handgrip 14, because spring 16 returns in the sleeve 10, and end 13 usefulness locking devices, 29 sealings.Remaining backs out adapter 2 from container 1 exactly, to finish the operation of replacing locking device 27 with new locking device 29.
Look forward to its use in the structure of adapter according to the preferred embodiment of apparatus of the present invention, this adapter is used for changing at the fluid of PDS (particularly in the CAPD system).In described embodiment, the end 13 of the tube element 3 of looking forward in general description of the present invention is the far-end of peritoneal catheter.In this case, wish to replace the locking device 27 of conduit 3 with new locking device 29, this locking device 27 is from former dialysis circulation and therefore possibility is contaminated, and this locking device 29 is included in the apparatus and plans in dialysis loop ends place closes ducts 3, thereby the assurance system is pollution-free.
Have multiple that undertaken easily by those skilled in the art, finish the method that is connected between joint 11 and adapter 2.May preferably use the connection of above-mentioned thread type 44-45.Under the situation when apparatus according to the present invention is used the adapter that acts on peritoneal dialysis, can use the adapter of those types that in medical instruments field, adopt usually, for example as described in above-mentioned prior art file.One of preferred connection type is the type that is called road strategic point lock.
For air-tightness and the particularly pollution-free characteristic of improving system, in apparatus according to the present invention, admitting housing is at the container in the face of opening wide on the side of perimeter wall, and perimeter wall is fluid-tight relatively.
Suitable is to provide sealing device at 30 places, tip of locking device 27,29, end 13 interactions of sealing device and tube element 3.Equally, those skilled in the art will expect also enclosing different suitable sealing devices with above-mentioned O shape with having no problem.
In a preferred embodiment of the invention, extend to its tail end 31 at the tip 30 of locking device 27,29, has the body of diameter greater than the diameter of tube element 3.
Apparatus according to the present invention is suitable for artificial use, and perhaps it can be included in the automatic switchover system.Under the situation about in the end mentioning, the executor will be different with handle 5, and will be connected on the automatic system.
In order to make its easier use, and make wrong probability minimum, particularly under the patient's who stands peritoneal dialysis situation, lid 4 externally has the reference mark 6,7 that is used for handle, is used for position fixing handle and discharges housing.
In a preferred embodiment of the invention, container 1 also comprises pipeline 7,8, as with the two lines of external communications.Expediently, two to be communicated with route be connector for the end of the tube element different with tube element 3.
In addition preferred embodiment in, according to apparatus of the present invention, particularly as the adapter that is used for peritoneal dialysis, be provided with valving, this valving is used for optionally being engraved in the joint 11 that is used to be connected on the tube element 3 and is communicated with described two between one of them of route and sets up fluid passage when certain.Such device is known in this field, and for example describes in patent cited above.For example, in the Fresenius apparatus employed camming hereto purpose may be suitable.
In the purposes that needs do not have to pollute, such as medical treatment and health purpose, perhaps need not have any operation of external contamination, admit housing 26 (discharging housing 28 if necessary in addition) to comprise decontaminating apparatus, for example polyvidone gel (povidone gel).
In order to guarantee to meet good sanitary legislation, joint 11 seals in a suitable manner, for example with the barrier film that breaks.
Advantageously, tube element 3 has the device on the joint 11 that is used to be connected to apparatus at its far-end.
In special preferred embodiment of the present invention, tube element 3 described above is formed for the part of the conduit of peritoneal dialysis.
For the visible indication of peritoneal dialysis loop number, can be on conduit generator.
Another object of the present invention is a kind of equipment that is used for peritoneal dialysis, and this equipment comprises apparatus described herein and conduit.
The present invention also comprises a kind of method that is used for removing and assembling for the end 13 of tube element 3 locking device 27,29, and the method comprising the steps of:
A) end 13 that is provided with first locking device 27 is connected on the joint 11 according to apparatus of the present invention;
B) make end 13 pass described joint 11, engage with admitting housing 26 up to first locking device 27, described locking device 27 can be admitted and keep to this admittance housing 26;
C) return described end 13, discharge described locking device 27;
D) act on the executor, discharge housing 28 thereby make rotation platform 19 rotations and motion leave described admittance housing 26 and take to, this release housing 28 can comprise and discharge second locking device 29;
E) make end 13 pass joint 11, engage with described second locking device 29 in being included in described release housing 28 up to it;
F) return the described end 13 that is provided with described locking device 29.
Other purpose of the present invention is a kind of the method for apparatus described herein with the adapter that acts on peritoneal dialysis, and particularly in standing the object of peritoneal dialysis, described method comprises:
A) peritoneal catheter 3 that is provided with first locking device 27 at its far-end is connected on the joint 11 of described apparatus;
B) second pipeline 8 is connected on the peritoneal dialysis solution source;
C) the 3rd pipeline 9 is connected on the exhaust system;
D) make described far-end 13 pass described joint 11, engage with admitting housing 26 up to described first locking device 27, described locking device 27 can be admitted and keep to this admittance housing 26;
E) return described far-end 13, discharge described locking device 27;
F) act on the executor 5, thereby described admittance housing 27 is left in rotation rotation platform 19 and motion and allow peritoneal dialysis solution to pass described first pipeline 8 to conduit 3, thereby carry out dialysis treatment;
G) act on the executor 5, thereby rotate rotation platform 19 and allow peritoneal dialysis solution to pass described the 3rd pipeline 9 to exhaust system;
H) act on the executor 5, discharge housing 28 thereby rotate rotation platform 19 and take to, this release housing 28 can comprise and discharge second locking device 29 that is used for described far-end 13;
I) make described far-end 13 pass described joint 11, engage with described second locking device 29 in being included in described release housing 28 up to it;
J) return the described far-end 13 that is provided with described locking device 29.
The equipment that is used for peritoneal dialysis comprises the part that belongs to peritoneal catheter and belongs to solution bag and the part of discharging bag.
Then describe special preferred embodiment of the present invention now, look forward to apparatus described herein in its use as the purposes of the conduit of adapter on being connected to described adapter that is used for peritoneal dialysis.
The part that belongs to peritoneal catheter is according to particular sequence configuration (according to the material that uses in the mill, continuing six months or longer), at the loading handgrip 14 (axle) of the promising forming finger of its far-end; Have at place, the end of axle to connect the system that is used to lock onto on the changing device more by means of road strategic point (luer) lock, this road strategic point lock connects with finishing that " card is taken " confirmed to tighten.
Apparatus according to the present invention by means of special connector be connected to be used for peritoneal dialysis source of solvent for example the bag, and be connected to tapping equipment for example suitable the bag on.
Axle is connected to and changes on the apparatus then, and this axle is around the peritoneal catheter by its locking device sealing, and this replacings apparatus is the single use portion of apparatus, and is made of solution and discharging bag and flow distributor or valve gear.
By means of executor 5, admit housing 26 to be positioned to and to be used to be connected the internal chamber 18 of apparatus adjacent with the joint 11 between the peritoneal catheter 3.
Change on the apparatus in case be connected to, the end 13 that makes conduit 3 by the axle 14 of the patient's who is connecting finger push is to front slide, thereby makes it pass jointing 11.
This motion is positioned at the locking device 27 of the conduit 3 of peritoneal dialysis loop ends place insertion in admitting housing 26, this admits housing 26 to keep it by means of holding device 37, and this holding device 37 engages with the appropriate section of the undercutting 36 that exists in the locking device of admitting 27.Advantageously, locking device 27 comprises sealing member, and for example O shape circle 34, and the sealing part provides the sealed engagement with housing.This sealing also is sealed in any pollutant in the housing 26.
In fact, the stroke of the end of the conduit 3 that reaches by means of finger pressure finishes, and exhausted locking device 27 is connected on the respective housings 26, and seals it clearly.
Stroke can be by experiencing that engaging of locking device 27 and holding device 37 realized and manually determining, perhaps be resisted against axle (it can be plastics or metal, spiral or unconventional) on flexible member 16 can be designed to, guarantee the suitable stroke of axle, keep by its housing 26 up to locking device 27.Advantageously, when finger push is being pasted the stopping of power of conduit 3 of apparatus constraint by axle, the end of springs return conduit 3.
Prevent that fully conduit from polluting.Be used to admit and keep the housing 26 of exhausted locking device 27 can be filled with disinfectant, for example have the sponge of polyvidone gel.The outside of the moistening conduit of this gel, this conduit in being inserted into apparatus the time still by exhausted locking device sealing, thereby the antibacterial that reduces the conduit outside loads, as a kind of system of further interpolation safety.
At this moment, rotation platform 19 can rotate by means of the executor is feasible, and the movable admittance housing 26 that leaves, and reaches and carries out dialysis treatment, and this executor is controlled from the outside of container 1 by handle 5 under manually-operated situation.In dialysis loop ends place, the effect on the executor is rotated rotation platform 19 and is carried and discharges housing 28, and this release housing 28 comprises second locking device 29, this second locking device 29 after joint 11 is connected on the conduit with closes ducts 3.
By means of the axle repetitive operation, at this moment far-end passes joint 11, engages the new locking device 29 that is included in its housing 28 up to it; Return closes ducts.
As a kind of further useful feature of conduit-device system, conduit has visible signal, the correct number of the circulation (dialysis circulation) of extracting with the indication locking device, and the needs of therefore indicating the replacing system.For example, might provide the co-axial drum of mobile axis with conduit in axle, this drum rotates around its axis by the driving of conduit projection, and system slows down by means of pinion, and activates visible signal.