CN209204063U - Combination cover for transfusion - Google Patents

Abstract

The application discloses a kind of combination cover for transfusion, comprising: outer cover has the upper accommodating chamber and lower accommodating chamber being connected, and the outer diameter of the upper accommodating chamber is less than the outer diameter of the lower accommodating chamber；The roof of the outer cover is equipped with needle transfixation hole；Outer cover is additionally provided with protective film；The protective film is covered on needle transfixation hole；Rubber plug is located in the upper accommodating chamber；The rubber plug is equipped with the puncture portion to align with needle transfixation hole；The bottom of the rubber plug is equipped with recessed portion；Snap ring is set in the outer cover；The snap ring is located at rubber plug described in the supported underneath of the rubber plug, and the snap ring has the protrusion matched with the recessed portion.On the one hand combination cover for transfusion provided herein reduces the size of rubber plug, reduce the production cost of rubber plug, expends raw material and reduces, economic and environment-friendly, is on the other hand capable of the sealed connection of effective guarantee outer cover and BFS bottles of heads, guarantees the leakproofness in infusion process.

Description

Combination cover for transfusion

Technical field

This application involves medical instruments field more particularly to a kind of combination cover for transfusion.

Background technique

In medical field, blow-fill-seal (referred to as blowing encapsulating, English writes a Chinese character in simplified form BFS) is a kind of advanced sterile processing Technology, in the technology, the molding of container filling, filling, sealing are completed in a set of continuous process, are grasped compared to conventional aseptic Make, it is a kind of advanced sterile filling technique that BFS technology, which has many advantages, such as clean, sterile, high degree of automation,.

It is defeated there is still a need for cooperating BFS combined cap to be just able to achieve its although the big infusion vessel of BFS preparation has realized sealing Liquid function.Traditional BFS draw-ring type combined cap has the draw-ring type plastic outer cover to match with BFS bottles of head diameters and is located at bottle Rubber sheet gasket between head and outer cover.

Due to blowing after encapsulating sealing there are cambered surface, therefore there are certain gap between rubber sheet gasket BFS and bottle head after welding, This will lead in infusion process after puncture outfit pierces through rubber sheet gasket and BFS bottles of heads, and medical fluid is between needle wall, rubber sheet gasket and outer cover The problem of gap leaks.

In addition, due to having spue line, thicker, the traditional BFS draw-ring type combined cap of molding spot size on BFS bottles of heads Do not have the function of direction selection, may cause rubber sheet gasket puncturing hole and be overlapped or close on spue line, it is tired that this will lead to puncture Difficult, puncture needle deformation punctures the problems such as exfoliation increase.

In addition, the easy opening structure of existing combined cap include there are easy dilapidated walls tear element, according to movement property, tear member Part, which is divided into, pulls fold-type and pull ring shape two types.Wherein, pulling fold-type and tearing element is mainly to pull folding handle, is pulled by external force It rolls over handle and the roof of outer cover is torn out by needle transfixation hole with leverage.And endless tear element is drawn mainly to pass through pulling pull ring, It covers outside and gradually tears out needle transfixation hole.But general medical plastic material all has certain toughness, it is simple to tearing The easy dilapidated walls of Katyuan part carry out thinning, although can have good lancinating, are easy to weaken the packaging intensity of product, make outer Boundary's stress is easy to concentrate on herein.Easily occur that accident is broken during transport, storage, sterilization of product etc. shows As causing connector to be polluted, making scrap of the product.

Utility model content

In view of the deficiencies in the prior art, the purpose of the application is to provide a kind of combination cover for transfusion, can at least solve One of problem above.

The technical solution of the application is as follows:

A kind of combination cover for transfusion, comprising:

Outer cover, has the upper accommodating chamber and lower accommodating chamber being connected, and the outer diameter of the upper accommodating chamber is less than the lower appearance Receive the outer diameter of chamber；The roof of the outer cover is equipped with needle transfixation hole；Outer cover is additionally provided with protective film；The protective film covering In on needle transfixation hole；

Rubber plug is located in the upper accommodating chamber；The rubber plug is equipped with the puncture portion to align with needle transfixation hole；Institute The bottom for stating rubber plug is equipped with recessed portion；

Snap ring is set in the outer cover；The rubber plug is located between the snap ring and shown roof, the snap ring With the protrusion matched with the recessed portion.

As a preferred embodiment, the protective film is plastic-aluminum alloy material.

As a preferred embodiment, setting on the roof, there are two needle transfixation holes；The rubber plug is equipped with two A puncture portion；Two puncture portions are arranged in a one-to-one correspondence with two needle transfixation holes；The protective film is welded in institute It states on roof.

As a preferred embodiment, the roof is equipped with space protrusion between two needle transfixation holes；Institute Protective film is stated mutually to weld with the space protrusion.

As a preferred embodiment, the roof is respectively equipped with along the two sides of the length direction of the space protrusion Weld blend stop；The protective film is located between two welding blend stops；The side of the protective film and the welding blend stop Mutually weld.

As a preferred embodiment, the roof is equipped with back to the surface of the rubber plug around needle transfixation hole The support protrusion for being used to support the protective film.

As a preferred embodiment, the support protrusion includes inner support protrusion and outer support protrusion；In two Support protrusion is located at the two sides of the space protrusion, and correspondingly surrounds two needle transfixation holes；It is described outer It is outer that support protrusion annular is centered around two inner support protrusions；It is outer that the welding blend stop is located at the outer support protrusion.

As a preferred embodiment, the protective film extends to form the portion of raising to the side wall of the outer cover.

As a preferred embodiment, the side wall of the outer cover includes upper ring-side wall and lower ring-side wall, the upper ring It is connected between side wall and the lower ring-side wall by connected unit, the roof of the outer cover and the upper ring-side wall form the upper appearance Receive chamber, the lower ring-side wall and the connected unit form the lower accommodating chamber.

As a preferred embodiment, the connected unit is equipped with the ribs for raising portion described in support.

As a preferred embodiment, the recessed portion is the ring groove that the rubber plug bottom is arranged in, it is described convex Portion is the ring convex rib being arranged on the snap ring out, and the ring convex rib is embedded in the ring groove.

As a preferred embodiment, the recessed portion is circumferentially spaced the rubber plug bottom to be arranged in Multiple grooves, the protrusion are the circumferentially spaced multiple convex blocks being arranged on the snap ring, and multiple convex blocks are embedding Enter in multiple grooves.

As a preferred embodiment, the inner ring side of the snap ring is connected with support rod, the support rod is connected to The bottom of the rubber plug.

As a preferred embodiment, the rubber plug is T-type structure.

As a preferred embodiment, the rubber plug has body part and is circumferentially arranged around the ontology Lap-joint flange；The puncture portion is arranged on the body；The lap-joint flange is located between the snap ring and the roof； The depressed area is in the lower surface of the lap-joint flange.

As a preferred embodiment, the inner wall of the outer cover is equipped with radially inwardly extending adapting table；Institute Snap ring is stated to be connected between the adapting table and the rubber plug.

As a preferred embodiment, the lower part of the outer cover is equipped with interconnecting piece, the interconnecting piece includes welding bench With the connector sleeve being set on the outside of the welding bench, welding groove is formed between the welding bench and the connector sleeve.

As a preferred embodiment, the connector sleeve have the first arcwall and the second arcwall, described first The height of arcwall is greater than the height of second arcwall.

As a preferred embodiment, the thickness of the protective film is in 0.2mm or less.

The utility model has the advantages that

Combination cover for transfusion in the embodiment of the present application, the upper accommodating chamber and lower accommodating chamber that outer cover has outer diameter different, By the way that rubber plug to be fixed in the lesser upper accommodating chamber of outer diameter, and BFS bottles of heads are placed in the biggish lower accommodating chamber of outer diameter, one Aspect reduces the size of rubber plug, reduces the production cost of rubber plug, expends raw material and reduces, economic and environment-friendly, on the other hand can The sealed connection of effective guarantee outer cover and BFS bottles of heads guarantees the leakproofness in infusion process.

Secondly, be covered on the needle transfixation hole covered outside by being equipped with protective film, it can be to glue by starting protective film Hand-manipulating of needle thorn is filled in, it is simple and convenient；Meanwhile being blocked the gap between protective film and roof using support protrusion, guarantee needle transfixation Hole is not contaminated.

In addition, can play fixed rubber plug by the buckle structure between the protrusion of snap ring and the recessed portion of rubber plug and match Close the effect of rubber plug sealing.

Further more, the rubber plug is equipped with multiple puncture portions, the dosing effect isolated with infusion is can be achieved in those puncture portions.

Finally, passing through the design of outer cover lower weld platform, outer cover and BFS bottles of head thermal welds are achieved the purpose that, have led to simultaneously The design for crossing the first arcwall and the second arcwall of connector sleeve has achieved the purpose that carry out option to outer cover, has prevented rubber plug Puncture portion is overlapped with the spue line of BFS bottles of heads.

Referring to following description and accompanying drawings, the particular implementation of the utility model is disclosed in detail, specifies practical Novel principle can be in a manner of adopted.It should be understood that the embodiments of the present invention in range not thus by Limitation.In the range of the spirit and terms of appended claims, the embodiments of the present invention includes many changes, modifications With it is equivalent.

The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more It uses in a other embodiment, is combined with the feature in other embodiment, or the feature in substitution other embodiment.

It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when using herein, but simultaneously It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those skilled in the art, without any creative labor, It is also possible to obtain other drawings based on these drawings.

Fig. 1 is a kind of combination cover for transfusion structural schematic diagram provided in the embodiment of the present application；

Fig. 2 is that Fig. 1 removes protective film status diagram；

Fig. 3 is the top view of Fig. 2；

Fig. 4 is the diagrammatic cross-section of Fig. 1；

Fig. 5 is the outer cover cross-sectional view of Fig. 1；

Fig. 6 is the side view of Fig. 2；

Fig. 7 is another side view of Fig. 2；

Fig. 8 is the snap ring schematic diagram of Fig. 1；

Fig. 9 is the top view of Fig. 8；

Figure 10 is the A-A cross-sectional view of Fig. 9；

Figure 11 is the rubber plug schematic diagram of Fig. 4.

Specific embodiment

In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common It is practical new that this all should belong in technical staff's every other embodiment obtained without making creative work The range of type protection.

It should be noted that it can directly on the other element when element is referred to as " being set to " another element Or 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 to To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ", " right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein "and/or" packet Include any and all combinations of one or more related listed items.

As shown in Figure 1 to 11.A kind of combination cover for transfusion is provided in the utility model embodiment comprising outer cover 1, Rubber plug 3 and snap ring 4.Wherein: outer cover 1 has the upper accommodating chamber 16 and lower accommodating chamber 17 being connected.Outside the upper accommodating chamber 16 Diameter D1 is less than the outer diameter D 2 of the lower accommodating chamber 17.The roof 11 of the outer cover 1 is equipped with needle transfixation hole 112；The outer cover 11 On be additionally provided with protective film 2；The protective film 2 is covered on needle transfixation hole 112.Rubber plug 3 is located in the upper accommodating chamber 16, The bottom of the rubber plug 3 is equipped with recessed portion 34.Snap ring 4 is set in the outer cover 1, and the rubber plug 3 is located in the roof 11 Between the snap ring 4, the snap ring 4 has the protrusion 41 matched with the recessed portion 34.

Specifically, outer cover 1 is in substantially cylinder barrel shaped, with upper ring-side wall 12 and lower ring-side wall 13, ring-side wall 12 on this It is connected between lower ring-side wall 13 by connected unit 14.The roof 11 of outer cover 1 is connected with upper ring-side wall 12, roof 11 and upper ring Side wall 12 forms upper accommodating chamber 16.Lower ring-side wall 13 forms lower accommodating chamber 17 with connected unit 14.

As shown in figure 4, the inner wall of outer cover 1 is equipped with radially inwardly extending adapting table 18 to limit to snap ring 4.Tool Body, the inside of connected unit 14 is convexly equipped with adapting table 18.In the present embodiment, which can be projection in connected unit 14 The ring convex rib (annular table structure) of ring side, alternatively, in a further embodiment, which can be for along the circumference of connected unit 14 The projection of direction interval is not limited the structure of adapting table 18 herein in multiple convex blocks of 14 inner ring side of connected unit.Snap ring 4 is held Consecutive 18 support, is located between adapting table 18 and rubber plug 3.

Wherein, the roof 11 of outer cover 1, upper ring-side wall 12, connected unit 14 and lower ring-side wall 13 can be integrally formed.Accordingly , outer cover 1 is an integral molding structure.In the application embodiment, the outer diameter D 1 of upper accommodating chamber 16 (namely upper ring-side wall 12 Internal diameter) it is less than the outer diameter D 2 (namely internal diameter of lower ring-side wall 13) of lower accommodating chamber 17, the wall thickness of upper ring-side wall 12 can be with lower ring The wall thickness of side wall 13 is identical.When watching the outer cover 1 from outside, outer diameter of ring-side wall 12 is less than the outer diameter of lower ring-side wall 13 on this, Connected unit 14 is substantially connected between ring-side wall 12 and lower ring-side wall 13 in horizontal endless structure.

As shown in Figure 1.Protective film 2 is covered on the roof 11 of outer cover 1, substantially elongated shape.In the present embodiment, Protective film 2 can be by being welded to connect in 11 outer surface of roof of outer cover 1.Protective film 2 is started for convenience of user, protective film 2 have raise portion 21.So as to achieve the purpose that convenient for users to pulling.It raises portion 21 and outer cover 1 has no connection relationship.It protects The free end of cuticula 2 forms and raises portion 21, so that user can very easily start 21 bending of the portion of raising, then passes through The portion of raising 21 is pinched to start protective film 2, corresponding needle transfixation hole 112 is exposed.

Wherein, protective film 2 extends to form to the side wall of outer cover 1 and described raises portion 21.For further convenient for users to general The portion of raising 21 is operated, the portion of raising 21 is started from outer cover 1.It is equipped with ribs 116 in the connected unit 14, is lifted with support Open portion 21.Specifically, the ribs 116 of two plates are respectively equipped in the two sides of outer tube, the parallel setting of ribs 116, and It is perpendicular with horizontal plane.

As shown in Fig. 2, Fig. 3, Fig. 7.Portion 21 of raising positioned at 2 both ends of protective film rides over ribs 116 by bending deformation On.The upper surface of ribs 116 can match with 21 shape of the portion of raising.Wherein, ribs 116 can prolong from upper ring-side wall 12 The upper end of lower ring-side wall 13 is extended to, whole (major part) is located in connected unit 14, its height when ribs 116 extend from top to bottom (vertical direction with connected unit 14) gradually decreases.There is the plane of connection 116 lower end of ribs in the upper end of lower ring-side wall 13 Portion.The generally inclined face structure of the planar portions,

As shown in Figure 1.Protective film 2 has the main part covered on needle transfixation hole 112, raises portion 21 for two and distinguishes position In the two sides of the main part.The width (along the length of space protrusion length direction) for raising portion 21 is less than main part.Phase It answers, width reduces to form the portion of raising 21 when protective film 2 extends to side wall.Preferably, protective film 2 is structure as a whole.

For fixed protective film 2, which is fixedly welded on the roof 11 of outer cover 1.Wherein, for preferably anti- Corrosive effect avoids getting rusty, and protective film 2 is the metal material comprising aluminium element.Wherein, protective film 2 can be plastic-aluminum alloy, It can be aluminum.For with good easily openable and ductility, protective film 2 is plastic-aluminum alloy material.It meanwhile being side Just user raises protective film 2, and the thickness of protective film 2 is less than 11 thickness of roof of outer cover 1.Preferably, protective film 2 Thickness is in 0.2mm or less.

Further, the roof 11 of outer cover 1 is equipped with needle transfixation hole 112, and protective film 2 is covered on needle transfixation hole 112, avoids Needle transfixation hole 112 is exposed, and then the magazines such as dust is avoided to enter inside outer cover 1.Needle transfixation hole 112 is round hole.Needle transfixation hole 112 can be set multiple, so that user be facilitated separately to carry out dosing and the operation of loading, avoid generating pollution.

In embodiment as shown in Figure 1 to 11, set on roof 11 there are two needle transfixation hole 112a, 112b, and in roof It is symmetrical arranged on 11.Correspondingly, setting on rubber plug 3, there are two puncture portions 31.Two puncture portions 31 and two needle transfixation hole 112a, 112b or more is aligned one by one.It is directly that puncture portion 31 is exposed using needle transfixation hole 112 by raising protective film 2, convenient for users to Carry out needle thorn.Specifically, user is started by that will raise portion 21, then pinches the portion of raising 21 and drive protective film 2 (main part) It is pulled to the other end, to drive protective film 2 to raise, to complete the unlatching of outer cover 1.

In the present embodiment, being set on outer cover 1 in symmetrical structure of protective film 2.The roof 11 is in two needles Space protrusion 113 is equipped between transfixation hole 112a, 112b.The protective film 2 is welded with 113 phase of space protrusion.It is spaced convex It is perpendicular with the length direction of protective film 2 to play 113.Space protrusion 113 protrudes from the upper surface of roof 11.Correspondingly, protective film 2 It is symmetrical about space protrusion 113.Two needle transfixation holes 112a, 112b are located at the two sides of space protrusion 113, and about Every raised 113 symmetrical settings.

In the present embodiment, protective film 2 is welded with 113 phase of space protrusion, and cut-off rule 22 is formed on protective film 2.Make User stops lifting using when raising portion 21 and starting protective film 2 from side, starting to the cut-off rule 22 (space protrusion 113) It rises, thus a needle transfixation hole 112a is exposed, carry out corresponding loading or feeding operations.It is needing to another needle transfixation hole When 112b is operated, then it will be started positioned at the protective film 2 of 22 other side of cut-off rule by the portion of raising 21.To ensure that two The independence of needle transfixation hole 112a, 112b also ensure another needle transfixation hole after to one of needle transfixation hole 112a operation 112b is in by 2 guard mode of protective film, avoids the formation of pollution.

Combination cover for transfusion provided by the present embodiment can fix protective film 2 by the space protrusion 113 and will Two needle transfixation holes 112a, 112b, which are separated by, to be left, and independent open is facilitated to use.The roof 11 is along the space protrusion 113 The two sides of length direction are respectively equipped with welding blend stop 111.The protective film 2 is located in two described welding blend stop 111a, 111b Between.Specifically, two welding blend stop 111a, 111b are located at the two sides of 2 main part of protective film.The side of the protective film 2 It is welded with welding blend stop 111a, 111b phase on side.

Two welding blend stop 111a, 111b have facing welding side, the upper surface of the vertical roof 11 in welding side. Protective film 2 is mutually welded along the side of the two sides of 113 length direction of space protrusion with the welding side.Welding blend stop 111a, The one end (namely upper end) of 111b far from 11 upper surface of roof is higher than the upper surface of the protective film 2.Weld blend stop 111a, 111b It is extended in the same direction with the side of the protective film 2, to adapt to the side of protective film 2.

Protective film 2 can be fixed on by combination cover for transfusion provided by the present embodiment using welding blend stop 111a, 111b On the roof 11 of outer cover 1, and 2 basic configuration of protective film is maintained, keeps blocking the covering of needle transfixation hole 112, protective film 2 is avoided to exist Deformation occurs in transport, storage.When user's utilization raises portion 21 and starts protective film 2, will be protected during starting The welding of cuticula 2 and welding blend stop 111 destroys, and raises until portion 21 will be raised to segmentation line position.

As shown in Figures 2 to 5.It is polluted in needle transfixation hole 112 to avoid the gap between protective film 2 and roof 11 Portion, the roof 11 are equipped with back to the surface of the rubber plug 3 and are used to support the protective film 2 around needle transfixation hole 112 Support protrusion.Support protrusion is in contact with the surface of the protective film 2, by the circumferential seal in needle transfixation hole 112.By being equipped with Needle transfixation hole 112 is circumferentially spaced with outside by the support protrusion, to form confined space, has prevented the possibility of pollution.

Specifically, the support protrusion includes inner support protrusion 115 and outer support protrusion 114.Two inner support protrusions 115 The two sides of the space protrusion 113 are located at, and correspondingly surround two needle transfixation holes 112.The outer branch Raised 114 annulars are supportted to be centered around outside two inner support protrusions 115；The welding blend stop 111 is located at the outer support protrusion Outside 114.

In the present embodiment, support protrusion can be structure as a whole with the roof 11 of outer cover 1.Inner support protrusion 115 is whole For circular ring structure, or as shown in Fig. 2, the barbed portion of circular ring structure inner support protrusion 115 is blocked by space protrusion 113, from And with space protrusion 113 by needle transfixation hole 112 entirely around.

As shown in Figure 2 and Figure 3.Outer support protrusion 114 includes two semi-circular segments, is had between two semi-circular segments parallel Two parallel-segments, two parallel-segments are located at the both ends of space protrusion 113, also, space protrusion 113 is mutually hung down with parallel-segment Directly.Two welding blend stops 111 are located at outer support protrusion 114 along the both sides external of 113 length direction of space protrusion, it is whole with Outer support protrusion 114 is parallel.

As shown in Fig. 4 and Figure 11, rubber plug 3 is T-type structure.Specifically, rubber plug 3 is in substantially oblate dish structure, section is T-shape.The rubber plug 3 is mounted in the upper accommodating chamber 16 of outer cover 1, and rubber plug 3 and upper ring-side wall 12 are interference fitted, ring-side wall on this 12 have smooth inner wall.In the present embodiment, it is set as shown in figure 5, being formed with interval on the internal ring wall of the upper ring-side wall 12 of outer cover 1 The multiple annular grooves 161 set, those annular grooves 161 can solve gas discharge of the rubber plug 3 in an assembling process between rubber plug 3 and outer cover 1 and ask Topic.

Specifically, the lap-joint flange 33 that the rubber plug 3 has body part 32 and is circumferentially arranged around the ontology.Institute Puncture portion 31 is stated to be arranged on the body.The lap-joint flange 33 is located between the snap ring 4 and the roof 11.It is described Recessed portion 34 is located at the lower surface of the lap-joint flange 33.The lower section that snap ring 4 is located at lap-joint flange 33 is accepted by lap-joint flange 33. The thickness of body part 32 is greater than the thickness of lap-joint flange 33.

Further, in the application embodiment, rubber plug 3 has at least one puncture portion 31.At least one puncture portion 31 are located at the body part 32 of rubber plug 3.In the present embodiment, which is two, and the line in two puncture portions 31 passes through glue The center of plug 3, one of puncture portion 31 is for puncturing dosing, another puncture portion 31 is for puncturing infusion, those puncture portions 31 can be formed by the way that groove is arranged at the top of rubber plug 3 and/or bottom, and the thickness in the puncture portion 31 is less than the thickness of rubber plug 3, with Syringe needle is facilitated to pierce through.

As shown in figure 11, it is respectively equipped with the groove structure to align in the upper and lower surfaces of rubber plug 3, upper and lower two recessed Puncture portion 31 is formed between slot structure.The body part 32 of rubber plug 3 is equipped with two pair of a groove structure, forms two puncture portions accordingly 31.Two puncture portions 31 align with needle transfixation hole 112 setting along the vertical direction.

As shown in Figure 4, Figure 5, the lower part of the combination cover for transfusion is equipped with interconnecting piece 15, which is formed in outer cover 1 Lower ring-side wall 13 lower part.The interconnecting piece can have holding tank 153 (namely following welding grooves 153), to connect with bottle head. In one embodiment, interconnecting piece 15 may include weld part, be welded by weld part and bottle head.

Specifically, the interconnecting piece 15 includes welding bench 154 and the connector sleeve 155 for being set in 154 outside of welding bench, the welding Platform 154 is formed in the lower end of lower ring-side wall 13, which is shaped in the lower end outside of lower ring-side wall 13, thus Welding groove 153 is formed between connector sleeve 155 and welding bench 154.Welding bench 154 can be than connector sleeve 155, can also be than connection Cover it is 155 short, or both equal length, the application and with no restriction.

After outer cover 1 is set on BFS bottles of head (not shown), BFS bottles of heads are located exactly at lower ring-side wall 13 and connected unit In the 14 lower accommodating chambers 17 formed, the lucky contact of upper arcuate structure of BFS bottles of heads is on connected unit 14, snap ring 4, BFS bottles of heads The welding ring of lower part is abutted with the lower end of welding bench 154 just, and the outer diameter of welding ring is slightly larger than the outer diameter of welding bench 154, and small In the internal diameter of connector sleeve 155, it can be achieved that the purpose that welding ring and welding bench 154 are weldingly connected, is somebody's turn to do by way of thermal weld Welding groove 153 provides enough hot melt spaces for thermal weld, which can wrap welding bench 154 and BFS bottles of heads, tool There is beautiful, generous effect.

As shown in Fig. 2, Fig. 6, the connector sleeve 155 has the first arcwall 151 and the second arcwall 152, the first arc The height of wall 151 is greater than the height of the second arcwall 152, and the first arcwall 151 and the second arcwall 152 can help user The direction of fixed outer cover 1 when assembling outer cover 1 with BFS bottles of heads, selects 1 direction of outer cover on demand.

Specifically, the connector sleeve 155 in the present embodiment has two the second arcwalls 152 diametrically, and two second First arcwall 151 is connected separately between arcwall 152.Since BFS bottles of heads have spue line, to avoid infusion group Two puncture portions 31 of the rubber plug 3 of closing lid are overlapped with spue line, can be judged by the first arcwall 151 and the second arcwall 152 The position in two puncture portions 31 of rubber plug 3, for example, by the first arcwall 151 and/or the second arcwall 152 setting with rubber plug 3 Two puncture portions 31 the opposite position of line at, by the way that the first arcwall 151 and/or the setting of the second arcwall 152 are existed The two sides of the spue line of BFS bottles of heads, that is, the two puncture portions 31 that can avoid rubber plug 3 are overlapped with spue line.

In the present embodiment, the bottom of rubber plug 3 is equipped with recessed portion 34, and the recessed portion 34 is for the protrusion 41 with snap ring 4 It is engaged by clamping.Please refer to shown in Fig. 8, snap ring 4 is substantially in oblate annular, be folded in outer cover 1 adapting table and rubber plug 3 it Between.Protrusion 41 is equipped on the surface opposite with rubber plug 3 of snap ring 4, which matches with the recessed portion 34 of rubber plug 3.

In a feasible embodiment, which is the ring groove that 3 bottom of rubber plug is arranged in, which is to set The ring convex rib in 4 upper surface of snap ring is set, which is embedded in ring groove.It further, can be at the bottom of the ring groove of rubber plug 3 Wall is further provided with spaced multiple grooves, is further provided with spaced multiple convex blocks in the upper surface of ring convex rib, After in ring convex rib insertion ring groove, those convex blocks are embedded in those grooves.

In another feasible embodiment, which is arranged in the multiple of 3 bottom of rubber plug to be circumferentially spaced Groove (such as multiple grooves are directly set in the bottom of rubber plug 3).The protrusion 41 is circumferentially spaced is arranged in snap ring 4 Multiple convex blocks (such as multiple convex blocks are directly arranged in the upper surface of snap ring 4) of upper surface, those convex blocks are embedded in those grooves. As shown in figure 8, multiple convex blocks are uniformly arranged, formation one is annular, has interval gap 42 between two neighboring convex block, two neighboring 42 circumferential lengths of interval gap between convex block are equal.

Pass through the fit structure of the protrusion 41 on the recessed portion 34 and snap ring 4 of 3 bottom of rubber plug, energy in the embodiment of the present application Enough achieve the purpose that for rubber plug 3 to be fixed in the upper accommodating chamber 16 that upper ring-side wall 12 is formed with roof 11, multiple convex blocks and multiple The fit structure of groove can effectively increase resistance between snap ring 4 and rubber plug 3, prevent rubber plug 3 mobile or slip.

In the embodiment of the present application, it is also connected with support rod in the inner ring side of snap ring 4, which is connected to rubber plug 3 Bottom, the support rod can play the purpose for further consolidating rubber plug 3, and rubber plug 3 in puncture process is effectively prevent to deviate from.In addition, logical It crosses and the line in two puncture portions 31 of the vertical rubber plug 3 of support rod is arranged, be overlapped support rod with the spue line on BFS bottles of heads, Puncture portion 31 is avoided to be overlapped with the spue line on BFS bottles of heads.

Combination cover for transfusion in the embodiment of the present application, the upper accommodating chamber 16 and lower receiving that outer cover 1 has outer diameter different BFS bottles of heads by the way that rubber plug 3 to be fixed in the lesser upper accommodating chamber 16 of outer diameter, and are placed on the biggish lower appearance of outer diameter by chamber 17 It receives in chamber 17, on the one hand reduces the size of rubber plug 3, reduce the production cost of rubber plug 3, expend raw material and reduce, it is economic and environment-friendly.

On the other hand it is capable of the sealed connection of effective guarantee outer cover 1 and BFS bottles of heads, guarantees the leakproofness in infusion process.

Secondly, being covered on the needle transfixation hole 112 on outer cover 1 by being equipped with protective film 2, by starting i.e. protective film 2 Needle thorn can be carried out to rubber plug 3, it is simple and convenient；Meanwhile it will be between protective film 2 and roof 11 using support protrusion (114,115) Gap blocks, and guarantees that needle transfixation hole 112 is not contaminated.

In addition, fixed glue can be played by the buckle structure between the protrusion 41 of snap ring 4 and the recessed portion 34 of rubber plug 3 Plug 3 and the effect for cooperating rubber plug 3 to seal.

Further more, the rubber plug 3 is equipped with multiple puncture portions 31, those puncture portions 31 can realize the dosing effect isolated with infusion Fruit.

Finally, passing through the design of 1 lower weld platform 154 of outer cover, outer cover 1 and BFS bottles of head thermal welds are achieved the purpose that, together When by the design of the first arcwall 151 and the second arcwall 152 of connector sleeve 155, reached the mesh that option is carried out to outer cover 1 , prevent the puncture portion 31 of rubber plug 3 to be overlapped with the spue line of BFS bottles of heads.

Herein cited any digital value all include between lower limit value to upper limit value with the lower value of an incremented and The all values of upper value, there are the intervals of at least two units between any lower value and any much higher value.For example, such as Fruit elaborates that the quantity an of component or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20 To 80, more preferably from 30 to 70, then purpose is arrived in order to illustrate also clearly listing such as 15 to 85,22 in the specification 68,43 to 51,30 to 32 is equivalent.For the value less than 1, suitably think that a unit is 0.0001,0.001,0.01,0.1. These are only intended to the example clearly expressed, it is believed that all possibility for the numerical value enumerated between minimum and peak Combination is all expressly set forth in the specification in a similar manner.

Unless otherwise indicated, all ranges all include all numbers between endpoint and endpoint.It is used together with range " about " or " approximation " be suitable for two endpoints of the range.Thus, " about 20 to 30 " are intended to cover that " about 20 to about 30 ", including at least the endpoint indicated.

All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot Together in this.Describing combined term " substantially by ... constitute " should include identified element, ingredient, component or step and reality Other elements, ingredient, component or the step of the basic novel feature of the combination are not influenced in matter.Using term "comprising" or " comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, component Or the embodiment that step is constituted.Here by using term " can with ", it is intended to illustrate that " can with " includes described any Attribute is all optional.

Multiple element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Optionally Ground, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation.It is used to The open "a" or "an" for describing element, ingredient, component or step is not said to exclude other elements, ingredient, component Or step.

It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch It states, many embodiments and many applications except provided example all will be aobvious and easy for a person skilled in the art See.Therefore, the range of this introduction should not be determined referring to foregoing description, but should referring to appended claims and this The full scope of the equivalent that a little claims are possessed determines.For comprehensive purpose, all articles and with reference to including special The disclosure of benefit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims Any aspect is not intended to abandon the body matter, also should not be considered as inventor the theme is not thought of as it is disclosed A part of utility model theme.

Claims (19)

1. a kind of combination cover for transfusion characterized by comprising

Outer cover, has the upper accommodating chamber and lower accommodating chamber being connected, and the outer diameter of the upper accommodating chamber is less than the lower accommodating chamber Outer diameter；The roof of the outer cover is equipped with needle transfixation hole；Outer cover is additionally provided with protective film；The protective film is covered in institute It states on needle transfixation hole；

Rubber plug is located in the upper accommodating chamber；The rubber plug is equipped with the puncture portion to align with needle transfixation hole；The glue The bottom of plug is equipped with recessed portion；

Snap ring is set in the outer cover；The rubber plug is located between the snap ring and shown roof, and the snap ring has The protrusion matched with the recessed portion.

2. combination cover for transfusion as described in claim 1, it is characterised in that: the protective film is plastic-aluminum alloy material.

3. combination cover for transfusion as described in claim 1, it is characterised in that: the needle transfixation there are two being set on the roof Hole；The rubber plug is set there are two the puncture portion；Two puncture portions are arranged in a one-to-one correspondence with two needle transfixation holes；Institute Protective film is stated to be welded on the roof.

4. combination cover for transfusion as claimed in claim 3, it is characterised in that: the roof is between two needle transfixation holes Equipped with space protrusion；The protective film is mutually welded with the space protrusion.

5. combination cover for transfusion as claimed in claim 4, it is characterised in that: the roof is along the length side of the space protrusion To two sides be respectively equipped with welding blend stop；The protective film is located between two welding blend stops；The side of the protective film It is mutually welded with the welding blend stop on side.

6. combination cover for transfusion as claimed in claim 5, it is characterised in that: the surface of the roof back to the rubber plug is equipped with The support protrusion for being used to support the protective film around needle transfixation hole.

7. combination cover for transfusion as claimed in claim 6, it is characterised in that: the support protrusion includes inner support protrusion and outer Support protrusion；Two inner support protrusions are located at the two sides of the space protrusion, and correspondingly pierce two needles Through-hole surrounds；It is outer that the outer support raised annular is centered around two inner support protrusions；The welding blend stop is located at described outer Outside support protrusion.

8. combination cover for transfusion as claimed in claim 1, it is characterised in that: the protective film is to the side of the outer cover Wall extends to form the portion of raising.

9. combination cover for transfusion as claimed in claim 8, it is characterised in that: the side wall of the outer cover includes upper ring-side wall under Ring-side wall is connected between the upper ring-side wall and the lower ring-side wall by connected unit, the roof of the outer cover and the upper ring Side wall forms the upper accommodating chamber, and the lower ring-side wall and the connected unit form the lower accommodating chamber.

10. combination cover for transfusion as claimed in claim 9, it is characterised in that: the connected unit is equipped with described in support and raises The ribs in portion.

11. combination cover for transfusion as described in claim 1, it is characterised in that: the recessed portion is to be arranged at the rubber plug bottom The ring groove in portion, the protrusion are the ring convex rib being arranged on the snap ring, and the ring convex rib is embedded in the ring groove.

12. combination cover for transfusion as described in claim 1, it is characterised in that: the recessed portion is circumferentially spaced sets Set multiple grooves in the rubber plug bottom, the protrusion be it is circumferentially spaced be arranged in it is multiple convex on the snap ring Block, multiple convex blocks are embedded in multiple grooves.

13. combination cover for transfusion as described in claim 1, it is characterised in that: the inner ring side of the snap ring is connected with support rod, The support rod is connected to the bottom of the rubber plug.

14. combination cover for transfusion as described in claim 1, it is characterised in that: the rubber plug is T-type structure.

15. combination cover for transfusion as described in claim 1, it is characterised in that: the rubber plug has body part and surrounds institute State the lap-joint flange that ontology is circumferentially arranged；The puncture portion is arranged on the body；The lap-joint flange is located in the card Between ring and the roof；The depressed area is in the lower surface of the lap-joint flange.

16. combination cover for transfusion as described in claim 1, it is characterised in that: the inner wall of the outer cover be equipped with radially to The adapting table of interior extension；The snap ring is connected between the adapting table and the rubber plug.

17. combination cover for transfusion as described in claim 1, it is characterised in that: the lower part of the outer cover is equipped with interconnecting piece, described Interconnecting piece includes welding bench and the connector sleeve that is set on the outside of the welding bench, is formed between the welding bench and the connector sleeve There is welding groove.

18. combination cover for transfusion as claimed in claim 17, it is characterised in that: the connector sleeve has the first arcwall and the Two arcwalls, the height of first arcwall are greater than the height of second arcwall.

19. combination cover for transfusion as described in claim 1, it is characterised in that: the thickness of the protective film is in 0.2mm or less.