Summary of the invention
Based on this, it is necessary to provide that a kind of structure is simple, separation membrane infusion connector easy to operate.
A kind of separation membrane infusion connector, including the internal first connecting portion and second connecting portion for being equipped with liquid-transport pipe-line；It is describedThe one end fits nested encryptions of one end of first connecting portion and the second connecting portion, the other end of the first connecting portion are to useIn the external connection end connecting with external infusion connector, the other end of the second connecting portion is the indwelling for connecting with indwelling needle tubingNeedle connecting pin；The first diaphragm is equipped in the liquid-transport pipe-line of the first connecting portion, first membrane portions separate described firstThe liquid-transport pipe-line of interconnecting piece, the liquid-transport pipe-line of the second connecting portion is interior to be equipped with the second diaphragm, and second membrane portions separateThe liquid-transport pipe-line of the second connecting portion, when the first connecting portion is packed into the second connecting portion, first diaphragmComposition can be cooperated to completely enclose the diaphragm of the liquid-transport pipe-line with second diaphragm.
In one of the embodiments, the separation membrane infusion connector further include be set in the first connecting portion with it is describedThe sealing mantle that in second connecting portion and both ends are tightly connected with the first connecting portion and the second connecting portion respectively, it is describedSealing mantle the first connecting portion packed into the second connecting portion or cover from Shi Junneng encase the first connecting portion withThe part for the connection that cooperates of the second connecting portion.
The first connecting portion is threadedly coupled with the second connecting portion in one of the embodiments, when described firstWhen interconnecting piece and the second connecting portion screw thread screw, first diaphragm and second diaphragm can cooperate composition envelope completelyClose the diaphragm of the liquid-transport pipe-line.
The sealing mantle screws or unscrews Shi Junneng with the second connecting portion screw thread in the first connecting portion and encasesThe part for the connection that cooperates of the first connecting portion and the second connecting portion.
The first connecting portion has internal screw thread in one of the embodiments, and the second connecting portion has external screw thread,The first connecting portion is connect by its internal screw thread with the external screw thread matching thread of the second connecting portion.
The first connecting portion is equipped with the part of the internal screw thread close to the external connection end in one of the embodiments,End and it is described sealing mantle one end be tightly connected；The second connecting portion is equipped with the externally threaded part close to instituteThe other end of the end and the sealing mantle of stating remaining needle connecting pin is tightly connected.
The first connecting portion is equipped with the part of the internal screw thread close to the external connection end in one of the embodiments,End be equipped with first diaphragm；The second connecting portion is equipped with the externally threaded part and connects far from the remaining needleThe end at end is equipped with second diaphragm.
First diaphragm is complementary with the shape of second diaphragm in one of the embodiments, first diaphragmThe consistent shape of cross sectional shape constituted with the liquid-transport pipe-line can be cooperated with second diaphragm.
First diaphragm includes two symmetrically arranged 1/4 in the liquid-transport pipe-line in one of the embodiments,Circular diaphragm, second diaphragm also include two symmetrically arranged 1/4 circular diaphragms in the liquid-transport pipe-line.
Packed between the first connecting portion and the second connecting portion in one of the embodiments, or cover from strokeFor 5mm.
The remaining needle connecting pin of the second connecting portion has for connecting with indwelling needle tubing in one of the embodiments,Internal screw thread.
The first diaphragm is equipped in the first connecting portion of above-mentioned separation membrane infusion connector, second connecting portion is equipped with the second diaphragm,And when first connecting portion is packed into second connecting portion, the first diaphragm and the second diaphragm can cooperate composition to completely enclose the separationThe diaphragm of the liquid-transport pipe-line of film infusion connector, so that operator only needs routinely outer using extracting after washing pipe liquid at the end of infusionInfusion connector is connect, then packs into first connecting portion to second connecting portion, keeps the first diaphragm and the second membrane engagement completely enclosedLiquid-transport pipe-line, at this point, can automatically generate positive pressure in the separation membrane infusion connector, the source of positive pressure is first connecting portion to secondThe positive pressure that liquid generates is squeezed when interconnecting piece packs into, and need not reuse tube-sealing solution positive pressure tube sealing at this time and uses hemostatic clamp, so that it mayTo effectively eliminate the negative pressure generated when external infusion connector is extracted, and effective positive pressure is formed in liquid-transport pipe-line.The separation membraneInfusion connector structure is simple, easy to operate, and the generation of remaining needle plugging phenomenon can be effectively prevented.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawingGive presently preferred embodiments of the present invention.But the invention can be realized in many different forms, however it is not limited to this paper instituteThe embodiment of description.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more thoroughComprehensively.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another elementOr there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected toTo another element or it may be simultaneously present centering elements.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the inventionThe normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description toolThe purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more phasesAny and all combinations of the listed item of pass.
Incorporated by reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the separation membrane infusion connector 100 of an embodiment include first connecting portion 110,Second connecting portion 120 and sealing mantle 130.
The inside of first connecting portion 110 and second connecting portion 120 is equipped with liquid-transport pipe-line.One end of first connecting portion 110 withThe one end fits nested encryptions of second connecting portion 120.Specifically, in the present embodiment, which connect with secondIt is threadedly coupled between portion 120.Wherein, one end of first connecting portion 110 has internal screw thread, and one end of second connecting portion 120 hasExternal screw thread.First connecting portion 110 is connect by its internal screw thread with the external screw thread matching thread of second connecting portion 120.
It is understood that in other embodiments, be not limited to be threadedly coupled between first connecting portion 110 and second connecting portion 120,Can also be by the way of other nested encryptions, if first connecting portion 110 is set in second connecting portion 120, the first connectionPortion 110 is equipped with guide groove and limiting slot (duct wall of guide groove and limiting slot not through liquid-transport pipe-line) in the inner wall of liquid-transport pipe-line, leadsSlot along liquid-transport pipe-line axial direction be arranged, the both ends that limiting slot is located at guide groove be respectively formed limit and with guide groove vertical connection, secondInterconnecting piece 120 is equipped with the retention bead matched with the guide groove with limiting slot, passes through the retention bead and guide groove and limiting slotMatch realize first connecting portion 110 and second connecting portion 120 pack into that (i.e. first connecting portion 110 is with respect to second connecting portion 120It is close), cover from (i.e. first connecting portion 110 with respect to second connecting portion 120 separate) and/or clamping.
The other end of first connecting portion 110 is the external connection end for connecting with external infusion connector.The external connection end can beDesign of Screw Thread, such as external screw thread or internal screw thread, i.e. the internal screw thread spiral shell that passes through the external screw thread and external infusion connector of first connecting portion 110Line connection.As shown in Figure 5 and Figure 6, in another embodiment, which can be directly connected to calparine cap 211, with external needleThe connection of formula infusion connector.Separation membrane infusion connector 200 in Fig. 5 and example shown in fig. 6 includes first connecting portion 210, secondInterconnecting piece 220 and sealing mantle 230.
The other end of second connecting portion 120 is the remaining needle connecting pin for connecting with indwelling needle tubing.Remaining needle connectionHold the internal screw thread having for connecting with indwelling needle tubing.
The first diaphragm 112 is equipped in the liquid-transport pipe-line of first connecting portion 110.The connection of first diaphragm, 112 spaced-apart firstThe liquid-transport pipe-line in portion 110.The second diaphragm 122 is equipped in the liquid-transport pipe-line of second connecting portion 120.Second diaphragm, 122 spaced-apartThe liquid-transport pipe-line of second connecting portion 120.When first connecting portion 110 is packed into second connecting portion 120, the first diaphragm 112 andTwo diaphragms 122 can cooperate the diaphragm for constituting completely enclosed liquid-transport pipe-line.
Specifically, in the present embodiment, first connecting portion 110 sets internal thread part and sets in the end close to external connection endThere is the first diaphragm 112.Second connecting portion 120 be equipped with externally threaded part far from remaining needle connecting pin end be equipped with second everyFilm 122.When first connecting portion 110 and 120 screw thread of second connecting portion screw, the first diaphragm 112 can match with the second diaphragm 122Close the diaphragm for abutting and constituting completely enclosed liquid-transport pipe-line；When first connecting portion 110 and 120 screw thread of second connecting portion unscrew,First diaphragm 112 is separated with the second diaphragm 122 so that liquid-transport pipe-line is connected.
The first diaphragm 112 in the present embodiment is complementary with the shape of the second diaphragm 122.First diaphragm 112 and the second diaphragm122 can cooperate the consistent shape of the cross sectional shape of composition and liquid-transport pipe-line.As the first diaphragm 112 can include but is not limited toTwo symmetrically arranged 1/4 circular diaphragms in liquid-transport pipe-line, the second diaphragm 122 also can include but is not limited to two and be infusedSymmetrically arranged 1/4 circular diaphragm in pipeline.
It is understood that in other embodiments, the first diaphragm 112 be also not necessarily limited to the shape of the second diaphragm 122 it is complementary, firstAfter diaphragm 112 is abutted with the cooperation of the second diaphragm 122, the two can also overlap, also the same in this way to have seal isolation effectFruit.
Further, in the present embodiment, first connecting portion 110 and second connecting portion 120 routinely may be used in the state of normalTo there is but be not limited to the combination of 5mm, to ensure the cylindrical appearance of the separation membrane infusion connector 100.When need conventional tube sealing orWhen infusion, packed between first connecting portion 110 and second connecting portion 120 or cover from stroke can be but be not limited to 5mm, that is, existAfter infusion, first connecting portion 110 can be packed into 5mm to second connecting portion 120, at this point, the first diaphragm 112 and secondDiaphragm 122 abuts against and the fully mated diaphragm for constituting closing liquid-transport pipe-line, when being infused, first can be connectedSocket part 110 to 120 sets of second connecting portion from 5mm the first diaphragm 112 and the second diaphragm 122 to be separated, liquid-transport pipe-line conducting,Infusion can be normally carried out.
Sealing mantle 130 is set in first connecting portion 110 and second connecting portion 120.Seal the both ends point of mantle 130It is not tightly connected with first connecting portion 110 and second connecting portion 120.Mantle 130 is sealed to connect in first connecting portion 110 to secondPortion 120 packs into or covers the portion for the connection that cooperates that first connecting portion 110 and second connecting portion 120 are encased from Shi JunnengPoint.
Specifically, in the present embodiment, first connecting portion 110 set internal thread part close to external connection end end withThe one end for sealing mantle 130 is tightly connected, and second connecting portion 120 is equipped with externally threaded part at the end close to remaining needle connecting pinThe other end of portion and sealing mantle 130 is tightly connected, and i.e. sealing mantle 130 is in first connecting portion 110 and second connecting portion in this way120 screw threads screw or unscrew Shi Junneng and encase first connecting portion 110 with second connecting portion 120 for the connection that cooperatesPart.
Mantle 130 is sealed preferably using the soft set of PVC with a thickness of 0.2mm.The loose package first of mantle 130 is sealed to connectPortion 110 and second connecting portion 120, it is ensured that the part for the connection that cooperates of first connecting portion 110 and second connecting portion 120Always it in closed sterilized space, prevents from polluting.Sealing mantle 130 is preferably able to surround maximum gauge 15mm, lengthSpend the cylindrical structure of 18mm, the maximum outside diameter 9.2mm of the separation membrane infusion connector 100 of opposite the present embodiment, internal diameter 8.4mm withAnd the maximum spacing 15mm of first connecting portion 110 and 120 internal and external threads of second connecting portion, it is ensured that sealing mantle 130 is alwaysEncase the part interconnected of first connecting portion 110 Yu second connecting portion 120.
It is understood that in other embodiments, which can also not contain the sealing mantle 130, phaseThe separation membrane infusion connector 100 answered can be applied in sterile, ultra-clean medical environment.
The first diaphragm 112 is equipped in the first connecting portion 110 of above-mentioned separation membrane infusion connector 100, second connecting portion 120 is setThere is the second diaphragm 122, and when first connecting portion 110 is packed into second connecting portion 120, the first diaphragm 112 and the second diaphragm 122Composition can be cooperated to completely enclose the diaphragm of the liquid-transport pipe-line of the separation membrane infusion connector 100, thus at the end of infusion, operationPerson only needs routinely using external infusion connector is extracted after the washing pipes liquid such as physiological saline or heparin, then by first connecting portion 110 toSecond connecting portion 120 packs into, and such as packs into 5mm, and the first diaphragm 112 and the second diaphragm 122 is made to cooperate completely enclosed liquid-transport pipe-line, thisWhen, positive pressure can be automatically generated in the separation membrane infusion connector 100, the source of positive pressure is that first connecting portion 110 is connected to secondWhen portion 120 packs into squeeze liquid generate positive pressure (size of pressure be long 5mm, diameter 8.4mm cylindrical body volume justPressure), tube-sealing solution positive pressure tube sealing need not be reused at this time and uses hemostatic clamp, so that it may when effectively eliminating the extraction of external infusion connectorThe negative pressure of generation, and effective positive pressure is formed in liquid-transport pipe-line.When needing to be infused, as long as operator is by first connecting portion110 to 120 sets of second connecting portion from such as covering from 5mm, separate the first diaphragm 112 with the second diaphragm 122, liquid-transport pipe-line is ledLogical, at this point, will form the negative pressure of equivalent in liquid-transport pipe-line, (size of pressure is the body of the cylindrical body of long 5mm, diameter 8.4mmLong-pending negative pressure), negative pressure can automatically cause endovascular blood backflow (i.e. clinically " blood back ") after generating.The generation of " blood back "The operator indwelling needle tubing can be explicitly indicated still in the blood vessels, thus operator do not need again it is raw by pumpback blood or preliminary fillingThe methods of salt water is managed whether in the blood vessels to judge the indwelling needle tubing, the cumbersome monitoring of operator can be effectively reduced, effectively mentionedHigh working efficiency reduces the waste of consumptive material.
100 structure of separation membrane infusion connector is simple, easy to operate, and the hair of remaining needle plugging phenomenon can be effectively preventedIt is raw.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned realityIt applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not depositedIn contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneouslyIt cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the artIt says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the inventionRange.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.