CN203694357U

CN203694357U - Safe IV (intravenous) catheter

Info

Publication number: CN203694357U
Application number: CN201320679482.9U
Authority: CN
Inventors: K.韦尔
Original assignee: B Braun Melsungen AG
Current assignee: B Braun Melsungen AG
Priority date: 2013-03-15
Filing date: 2013-10-31
Publication date: 2014-07-09
Anticipated expiration: 2023-10-31
Also published as: CN104043186A; CN104043186B

Abstract

The utility model relates to a safe IV (intravenous) catheter. Catheter components comprise a catheter hub provided with a catheter conduit and a needle hub provided with a needle which penetrates through the catheter conduit in a bulged manner, wherein the catheter hub is provided with a valve or a diaphragm which is used for stopping or decelerating a fluid flow flowing into or flowing out of the catheter hub when the valve or the diaphragm is closed; the valve or the diaphragm is provided with an exposed near side wall, and by virtue of the near side wall, the valve can be wiped or cleaned by a preservative solution; and the valve is further provided with at least part of cavity used for accommodating a needle sheath, and the included needle sheath is used for preventing accidental stabbing of a needle point.

Description

Safety IV catheter

Technical field

Conduit tube component for venipuncture is discussed herein in general manner, and has been discussed more specifically to relate to and there is erasable device of blocking out blood flow, barrier film or valve and for covering the IV conduit tube component of needle tip protector of needle point.

Background technology

The insertion process of IV conduit (IVC) assembly comprises four basic steps: (1) health care worker together inserts pin and conduit patient's vein; (2) inserting after vein with needle point, with his or her finger, conduit is pushed to patient's vein by health care worker; (3) health care worker catches catheter hub end to exert pressure to stop blood flow to extract pin through conduit in patient's vein distally of conductive pipe by the hands of vacating with him or she simultaneously; And then (4) health care worker is bonded on patient skin by the conduit inserting now and the exposed ends of conduit (catheter hub) is connected to the source of the fluid that is injected into patient's vein with adhesive tape.

Problem is extract pin from patient's vein after, and health care worker must be placed on the needle point exposing near position and complete above-mentioned (3) and (4) desired task at once.The needle point exposing at this binding site causes the danger of accidental needle sticks, makes in the case health care worker be vulnerable to the infection of various dangerous blood-borne pathogens, comprises the AIDS and the hepatitis that cause due to accidental needle sticks.

Thereby stop exerting pressure and completing above-mentioned steps (4) with second hands to vein if insert the health care worker of IV conduit, produce another problem.This can increase patient and the risk infecting occur and cause health care worker to carry out more work to clean the blood flowing out from open catheter hub.

Other pin type makes health care worker face the risk that is subject to accidental needle sticks equally.For example, utilize the doctor that staight needle, Huber pin, aerofoil profile transfusion needle etc. are injected used pin can be placed on to dish above to processed by nurse subsequently.Used pin being placed on dish or work station until abandon in the time period of pin, used be directed near pin or around the personnel that work are potential sources of pathophoresis.Therefore, when extract pin from patient time, all pins should be covered, to guarantee that health care worker is safer.Ideally, the step of covering needle point should be passive, oneself's startup or be at least simple.In addition, should be reliable and robust for covering the device of pin.

IV conduit tube component is the known valve with the pipeline that is arranged in catheter hub also, in order to stop or the blood backflow that slows down after the vein that successfully punctures.But valve makes wiping or cleaning to valve become possibility hardly with respect to the position of catheter hub.In addition, the position of valve in catheter hub caused except having band and can the conduit of the valve of wiping, be difficult to comprise needle tip protector or needle shield.

Utility model content

Each side of the present disclosure comprises safety IV catheter (IVC), and this safety IV catheter comprises the catheter hub that is attached to duct conduits and the pin that is attached to pin hub.Described safety IV C also comprises the valve that is attached to catheter hub, and described valve comprises inner chamber, be exposed to the proximal end wall of catheter hub outside, be formed at the gap in the proximal end wall of valve.Pin extends through duct conduits, and needle tip protector comprises distal portions, comprises the proximal wall of opening and the low profile between distal portions and proximal wall, and pin is through the opening in proximal wall.Wherein the distal portions of needle tip protector is positioned at the intracavity of valve and proximal wall and is positioned at the outside of valve.

In safety IV C, low profile can selectively be positioned at gap place.

In safety IV C, needle tip protector selectively comprises roughly straight or two straight arms roughly intersected with each other during along side elevation, and wherein low profile is positioned on arm or is positioned at the position that two arms intersect.

In safety IV C, pin selectively comprises fold.

In safety IV C, the size of this fold (if comprising) is designed to be greater than the opening in proximal wall.

In safety IV C, valve extends at the nearside of catheter hub.

In safety IV C, valve extends at the nearside of catheter hub, and it is wider than catheter hub to have at least a portion.

This safety IV C also comprises erecting tools, and erecting tools is for installing the distal part of needle tip protector through gap.After the installation of needle tip protector, this instrument can be removed from assembly.

The each side of this utility model embodiment also comprises a kind of method for the manufacture of safety IV catheter.In one embodiment, the method comprises the step that forms catheter hub and catheter hub is attached to duct conduits.The method can also comprise the following steps: the needle tip protector with one or two arm is attached on pin and is partly attached into the valve that comprises inner chamber.The method can also comprise the following steps: valve/needle tip protector/pin unit is attached to catheter hub.In some instances, valve comprises the proximal end wall that is exposed to catheter hub and outside, gap.The method can also comprise the following steps: form pin hub and pin hub is attached to pin and makes pin extend through duct conduits.In some instances, needle tip protector there is distal portions, comprise the proximal wall of opening, low profile between distal portions and proximal wall.

Described method can also comprise the following steps: thus make low profile aim at the gap place that is placed in valve.

Described method can also comprise the following steps: before the distal part of needle tip protector is put into the inner chamber of valve, utilize and be included in pin around and the TO valve in needle tip protector hole around.

Described method can also comprise the following steps: before needle tip protector is placed in to the inner chamber of valve, the far-end of instrument is placed through gap.In some instances, instrument has the distally otch of the far-end for holding needle tip protector.In other example, instrument is to be made up of the part of two separation, thereby allows instrument to be inserted to the space that then valve makes these two parts expand or they are separated to be provided for inserting needle tip protector under collapsed mode at these two parts.

Described method can also comprise the step with the proximal end wall of antiseptic solution wiping valve.In some instances, wiping motion is the single smooth motion on the recent side outer surface of valve, the outer surface of valve be expose and do not covered by catheter hub.

Wherein, needle tip protector can comprise two arms intersected with each other to described method, and wherein, low profile is positioned at two positions that arm is intersected with each other.

Described method can also comprise the following steps: promote the distal portions of needle tip protector through the hole of instrument.In some instances, instrument comprises the otch that is positioned at far-end, and this otch is for allowing needle tip protector to pass the far-end of instrument.

In described method, pin hub can comprise Rule cone joint.

Described method can also comprise the step of removing pin from catheter hub.

Another aspect of the present disclosure is a kind of method for the manufacture of safety IV catheter.In an example, the method comprises the following steps: form catheter hub and this catheter hub is attached to duct conduits.The method can also comprise the following steps: the needle tip protector with one or two arm on pin is partly attached in the valve that comprises inner chamber, then valve/needle tip protector/pin unit is attached to catheter hub.In some instances, valve comprises inner chamber, proximal end wall, gap at proximal end wall place.The method can also comprise the following steps: form pin hub and this pin hub be attached to pin and instrument is placed in to pin top and passes at least in part the gap on valve, described instrument comprises hollow inside.The method can also comprise the following steps: insert pin through catheter hub; By making needle tip protector slide through at least in part the hollow interior of instrument, needle tip protector is placed at least in part to the interior intracavity of valve.Then, by making instrument do lateral movement through the groove on instrument from pin, and removal tool.

In described method, valve can comprise proximal wall, and wherein the proximal wall of valve is positioned at the outside of catheter hub.

In described method, needle tip protector can comprise distal portions, comprise the proximal wall of opening and the low profile between distal portions and proximal wall.

In described method, instrument can comprise the longitudinal slot with the size that is greater than pin diameter.

Another feature of the present disclosure is a kind of safety IV catheter, and it comprises:

Be attached to the catheter hub of duct conduits;

Be attached to the valve of described catheter hub, described valve comprises inner chamber, is positioned at proximal end wall and the gap of the near-end of described catheter hub;

Be attached to the pin hub of pin, and described pin extends through described duct conduits;

Needle tip protector, described needle tip protector comprises the proximal wall of distal portions, the second size and the central part of the 3rd size between described distal portions and described proximal wall of first size, described proximal wall comprises the opening with opening size, described first size be greater than described second and described the 3rd size and described the 3rd size be less than described first and described the second size; And

Wherein, the distal portions of described needle tip protector is positioned at the intracavity of described valve and described proximal wall and is positioned at the outside of described valve.

Another feature of the present disclosure is a kind of safety IV catheter, and this conduit comprises the pin hub that is attached to the catheter hub of duct conduits and comprises the pin with a pin diameter that extends through duct conduits.This safety IV C can also comprise the valve that is attached to catheter hub, and described valve comprises inner chamber, is positioned at proximal end wall and the gap of the near-end of catheter hub.In needle tip protector, possesses valve.Needle tip protector comprises the proximal wall of distal portions, the second size and the central part of the 3rd size between distal portions and proximal wall of first size, and proximal wall comprises the opening with opening size, and the 3rd size is less than pin diameter; And wherein the distal portions of needle tip protector is positioned at the intracavity of valve, proximal wall is positioned at the outside of valve.

One roughly as shown in drawings and safety IV catheter as described in description.

Accompanying drawing explanation

With reference to description, claim and accompanying drawing, will understand better these and other feature and advantage of this utility model device, system and method, wherein:

Fig. 1 is according to the schematic sectional side view of the conduit tube component with valve of disclosure each side.

Fig. 2 is the section end view of the conduit tube component of Fig. 1 of 2-2 intercepting along the line.

Fig. 3 A is according to the isometric view of the valve of disclosure each side or barrier film.

Fig. 3 B is the valve of Fig. 3 a or the end-view of barrier film with alternative gap.

Fig. 3 C is the valve of Fig. 3 a or the front view of barrier film, there is shown the front gap that is formed at expansion section, distally.

Fig. 4 is in the schematic sectional side view of carrying out the conduit tube component of the Fig. 1 in the assembling stage with erecting tools.

Fig. 5 is according to the side elevation view of the erecting tools of disclosure each side.

Fig. 5 A is the view of the half of the needle tip protector erecting tools of Fig. 5 of 5A-5A intercepting along the line.

Fig. 5 B is the front view of the needle tip protector erecting tools of Fig. 5 of 5B-5B intercepting along the line.

Fig. 5 C is according to the side elevation view of the disclosure alternative erecting tools on the other hand.

Fig. 5 D is the top view of the erecting tools of Fig. 5 C of 5D-5D intercepting along the line.

Fig. 6 is according to the side elevation view of the pin erecting tools of disclosure each side.

Fig. 7 is the front view of the pin erecting tools of Fig. 6.

Fig. 8 is the schematic sectional side view that is applicable to the conduit tube component of Fig. 1 of positive type utensil.

Fig. 9 is the schematic sectional side view with the alternative conduit tube component of valve and alternative needle tip protector.

Figure 10 is according to the schematic sectional side view of another conduit tube component with valve substituting of disclosure each side.

Figure 11 is the isometric view of the needle tip protector shown in the conduit tube component of Fig. 1 and Fig. 4.

Figure 12 is the isometric view of the needle tip protector shown in the conduit tube component of Fig. 9.

Figure 13 be can be used for described conduit tube component herein, according to the isometric view of the alternative needle tip protector of disclosure each side.

The specific embodiment

Below the detailed description of statement and be intended that by reference to the accompanying drawings the intravenous conduit of safety IV C(of the each side to this utility model device, system and method) the description of preferred embodiment, and be not intended to represent to form and to apply this utility model device, system and method only have a form.This description has illustrated in conjunction with the embodiment illustrating the feature and the step that form and apply the embodiment of this utility model device, system and method.It should be understood, however, that can realize also intention by different embodiment is included in the identical or equivalent function and structure in disclosure spirit and scope.As other parts are pointed herein, identical Reference numeral is intended that and represents same or analogous element or feature.

With reference to Fig. 1, there is shown the cross sectional side view of safety IV C 100, this safety IV C 100 comprises catheter hub 102 and pin hub 106, and catheter hub 102 comprises duct conduits 104, and pin hub 106 comprises pin 108, and pin 108 is outstanding through duct conduits in preparation use location.Duct conduits 104 is kept member 110 and remains in catheter hub 102, and retaining member 110 is squeezed in the near-end of pipeline on the inner surface of nose 112 of catheter hub and is well-known in the art.In figure, show, catheter hub 102 also has the main body 114 that comprises outer surface 116, outer surface 116 have optional clamping protuberance (not shown) for make a finger or several fingers can be during use or after venipuncture successfully, extract pin hub during promote this protuberance to obtain leverage.The size of safety IV C 100 can be designed to have pin and the duct conduits of different size, for example No. 14 (gauge), No. 16, No. 18 etc., and there is the different length that is suitable for central vein purposes, arteriovenous purposes or vein purposes.In an example, catheter hub 102 is formed by distally hub section 96 and nearside hub section 98, distally hub section 96 utilizes two or more pleurapophysis sheets or wall portion (not shown) to connect together with nearside hub section 98, for example, by the pleurapophysis sheet of a hub section is welded or be glued onto another hub section.In an example, pleurapophysis sheet is positioned on the hub section of distally.In another example, pleurapophysis sheet is positioned on nearside hub section.By utilizing the attached distally of pleurapophysis sheet hub section 96 and nearside hub section 98, and make the state of hub 102 in exposing along 80He Xia patent part, upper patent part 82,80He Xia patent part, upper patent part 82 can be called as respectively the first and second hub body openings.For example, in the time that positive type utensil (IV line) is inserted wherein, the first and second hub body openings 80,82 allow valve during use to expand in these openings.In some instances, hub only has an opening, i.e. opening 80 or 82.In other example, thereby the size and dimension of hub is designed to guarantee in the situation that not comprising any hub body opening that enough gaps allow valve to expand.Selectively, trocar sheath (not shown) can be positioned on catheter hub 102 to cover two hub body openings 80,82.For example, thus can be that the spring-backed quill of elastomeric material or silicone material can slide and covers two hub body openings on the outer surface of catheter hub.

In inside, catheter hub 102 comprises the inner surface 120 that limits inner chamber 122, and feather valve 124 is arranged in inner chamber 122.Valve 124 also can be called as sealing member, barrier film or blood block device, and its function is after successful venipuncture, to stop or limit blood is back in inner chamber 122 and from the near-end 126 of catheter hub and flows out.Due to feather valve 124, secondary backflow blood can easily flow to inner chamber 122 through the gap between duct conduits 104 and pin 108 outer surfaces.In addition,, when remove pin 108 and pin hub 106 from catheter hub after successful venipuncture time, in the time that feather valve 124 cuts out automatically, the backflow of blood will stop.

As shown in the figure, feather valve 124 is positioned at the near-end 128 of catheter hub 102, and nearside valve surface 130 flushes, caves in (as shown in fig. 1), protrudes or be exposed at the near-end 128 of catheter hub the near-end 128 of catheter hub with the near-end 128 of catheter hub, for example, so that wiping and/or cleaning, use antiseptic solution clean surface.Valve surface 130 exposes, and is similar to desktop, be convenient to wiping and cleaning and needn't use special swab or instrument to arrive the gap that is difficult to contact.In an example, feather valve 124 comprises having significant nearside valve surface 130 so that the proximal flange of wiping 132 and outer annular groove 134.The size and dimension of groove 134 be designed to catheter hub body on annular protuberance 136 match, to both are secured together.In another example, feather valve or sealing member 124 comprise annular protuberance 138, and this protuberance 138 is for engaging to both are secured together with the cannelure 140 on catheter hub.In another example, feather valve comprises the cannelure and the annular protuberance that engage with the individual features on catheter hub.In addition or alternately, expansion section, distally 142(is set can be distally head or the ring protuberance of the expansion of extending from valve body 146 outward radials) to catheter hub is bonded on to the far-end of feather valve.If comprised, this provides another abutment between feather valve and catheter hub.Alternatively, it can be the single abutment between feather valve and catheter hub that this distally engages, and catheter hub engages without the near-end at valve also.Alternately, the distally on valve body 146 engages depression or the groove that can be embodied as for receiving the corresponding protuberance that is formed at catheter hub inner chamber.

For the ease of feather valve 124 is inserted in the inner chamber 122 of catheter hub 102, the middle part 144 that has comprised depression is to provide the gap of inserting during feather valve 124.The section size at the middle part 144 of depression is less than the section size of the protuberance 138 on feather valve.In another example, if comprised, the section size at the middle part 144 of depression is less than the section size of the groove 134 on feather valve.In another example, if comprised, the section size at the middle part 144 of depression is less than the protuberance on feather valve or expands the section size of distal part 142.Once be mounted, the middle part 144 of depression does not contact the inner surface of catheter hub.As further discussed below, the size and dimension at the middle part 144 of depression is designed to provide space or gap, for example, while positive type utensil (drip tube, positive type female Luer or syringe top) being inserted to feather valve with enforcement medical procedure with box lunch valve body 146 can be expanded.

In order to be further convenient to that feather valve 124 is inserted in the inner chamber 122 of catheter hub 102, can be in elastic valve body 146 or on distally central concave portion 14 is set, to allow far-end compression during inserting or between installation period.This allows the far-end of feather valve to be expressed in the inner chamber of catheter hub, thereby expansion section, distally 142 is engaged with the annular distally depressed part 150 of catheter hub, if comprise the second joint.In another example, omit distally central concave portion 148 and only formed a gap at the far-end of valve, as further discussed below.If be omitted, the size and dimension suitably catheter hub of design can be provided for the space that valve is expanded in catheter hub.In an example, catheter hub can be made up of multiple boss assemblies, for example two or more boss assemblies, thus be convenient to feather valve to be installed to hub, as further discussed below.

In an example, feather valve 124 for example, is made up of elastomer (elastomeric material or silicone).The elasticity of valve is intrinsic in selected materials, and can pass through manufacturing process (for example, by adjusting hardness or flintiness) and adjusted or change.Alternately, can utilize thermoplastic elastomer (TPE) (TPE) to form feather valve.Exemplary thermoplastic elastomer (TPE) comprises the thermoplastic elastomer (TPE) that is selected from block copolymer group, the Dyflex of the Engage of the Arnitel of for example DSM N. V., the Solprene of Dynasol company, Dow Chemical company, the Hytrel of Du Pont company, ELASTO company and the Kraton of Mediprene and Shell Chemical company.In some instances, to feather valve, antimicrobial compositions is set, for controlling or resist the germ contamination of valve inside, for example, reduces biofilm formation amount.Of the present disclosure one concrete aspect, silver phosphate zirconium is formulated to the moulding material for moulding elastomeric valve 124, add in TPE, silicone or elastomeric material.The content of silver compound can change between the percentage by weight of elastomer or TPE about 1% to about 10, and preferable range can be between about 6% and about 8%.Alternately or in addition, antimicrobial compositions is mixed into the material for molded catheter hub.Other antimicrobial that can be used for the parts of disclosure system, apparatus and method comprises: silver, gold, platinum, copper and zinc.Antimicrobial metal compound used herein preferably includes silver and golden oxide and salt, for example: silver acetate, silver benzoate, Disilver carbonate, Itrol., silver chloride, silver iodide, silver nitrate, silver oxide, silver sulfadiazine, silver sulfate, auric chloride and gold oxide.Also can use platinum compounds, for example chloroplatinic acid or its salt (for example, platinic sodium chloride and chloroplatinic acid calcium).In addition, can use the compound of copper and zinc, for example: the oxide of copper and zinc and salt, for example, above for described those of silver.Can use the combination of single physiology's antimicrobial metal compound or physiology's antimicrobial metal compound.Alternately, can on the wall surface of parts of vessels, deposit the antimicrobial of skim.Other antimicrobial that is applicable to feather valve comprises: chlorhexidine gluconate, hibitane diacetate, parachlorometaxylenol, povidone iodine, triclosan, benzethonium chloride, benzalkonium chloride, the Buddhist nun of replacing difficult to understand determine and antibiotic.

Referring again to the feather valve 124 of Fig. 1, through hole 152 is arranged between the two ends of feather valve, between far-end and near-end.Through hole 152 provide in the time that pin hub 106 is assembled in catheter hub 102 for the path of pin 108 and in the time connecting through valve with positive type female Luer, pin or positive type utensil for the mobile path of fluid, as further discussed below.In addition, the endoporus portion 154 of expansion is formed at the inside of feather valve 124, and is connected with through hole 152.In illustrated example, the shape of the endoporus portion 154 of expansion is designed to tear-drop shape, wherein special-shaped cavity be positioned at the near-end of valve and farther and larger end and be positioned at the distally of valve compared with small end.The size and dimension of the endoporus portion 154 expanding is designed to hold at least part of needle tip protector or needle shield 156, and needle tip protector or needle shield 156 parts are positioned at feather valve 124 inside and are partly positioned at the outside of feather valve.Therefore, feather valve 124 comprises having the elastic body or the TPE body that are formed at the through hole between far-end and near-end, and has the first section size.In the endoporus portion of the expansion that there is inner surface and be connected with through hole, also possesses valve; the endoporus portion of described expansion has section size, for example the second section size, this second section size be the first section size at least twice (; 2 ×), to hold at least a portion of needle tip protector.In other example, in the time opening the first section with positive type utensil, the second section size is at least twice of the first section size.

In some instances, the expansion section of tear-drop shape cavity is enough large, to hold needle shield in the situation that of contact pin sheath not.But, imagine needle shield and expanded the contacting to a certain degree between the inner chamber of endoporus portion 154.In an example, the inner hole part of expansion is between near-end and far-end.In some instances, the endoporus portion of expansion is positioned at the nearside of through hole through distally valve portion.In an example, the endoporus portion of expansion has tear-drop shape, and being positioned at than the near-end of the more close feather valve of far-end of feather valve 124 compared with small end 158 of tear-drop shape.Can be limited by proximal flange 132 at least in part compared with small end 158, proximal flange 132 has opening (for example gap), and this opening has the periphery contacting with pin 108 and/or needle tip protector 156, as further discussed below.Thereby the size and dimension of the larger end of tear-drop shape is designed to hold needle tip protector in the situation that not contacting needle tip protector and does not hinder needle tip protector motion, as further discussed below.In some instances, needle shield contacts with the endoporus portion 154 of expansion.

In an example, feather valve 124 is formed by single core pin, and this core pin has expansion section, and expansion section has the tear-drop shape that is used to form expansion endoporus portion 154.Can be by proximal flange 132 is expanded, and remove this core pin through the little gap in flange 132.Afterwards, in the time that feather valve 124 is press fit in catheter hub, gap-closing is become to gap.Opposite end can be cut with blade.Alternately, the endoporus portion 154 of expansion can form by meeting at maximum point interior diameter place and reserving closely spaced two core pins at two ends, thereby then the endoporus portion 154 of expansion is press fit in catheter hub gap-closing is become to gap.Alternately, two halfbodies that feather valve 124 can be separated by the maximum inner diameter along endoporus portion 154 form.Alternately, can there is the overlapping of these two elasticity halfbodies.After these two halfbodies being shaped and solidifying, they all can be cut with blade.Be used to form that to expand another alternative forming technique of endoporus portion 154 be blow molding, at one end or the other end reserve little gap, this little gap is closed into gap.Opposite end can be cut with blade.

In figure, show, pin hub 106 comprises flashback chamber (flash chamber) 160 and external screw thread 161, and this chamber can be designed to cloudy type female Luer.Ventilative discharge stopple can be positioned at the end opening of the flashback chamber of pin hub, for example, with convenient conduit tube component (after successful venipuncture) prevention blood flow in use.In addition, at the far-end of pin hub, distally guard shield 162 is set, for receiving or hold the nearly side clamping of needle tip protector.Guard shield 162 has diapire 164; diapire 164 has the degree of depth, the size of this degree of depth be designed to hold needle tip protector 156 and not needle tip protector distad advance too far make when when assembling diapire do not make the narrowest point of needle tip protector 156, dwindle a little or cross point 166 is subjected to displacement from the end opening of feather valve.In certain embodiments, sheath can be positioned to away from its narrowest point at gap place.

As shown in the figure, a part for needle tip protector 156 extends and is arranged in the distally guard shield 162 of pin hub at the outside of valve and nearside.In an example, this part of extending in outside comprises proximal wall, and proximal wall comprises opening, and pin passes from this opening.In other example, the part that extends to valve outside of needle tip protector can adopt difformity, for example, have and comprise two or more walls, comprise erose wall or comprise the portions of proximal of multiple different material.Pin 108 distad guard shield 162 distal extension and end in needle point 92, this needle point 92 has sharp-pointed cutting tip and pin profile variations 94, profile variations 94 can be fold, swell, be attached to the sleeve pipe of pin or the material gathering.Profile variations 94 be configured to coordinate with needle shield 156 (for example by with needle tip protector proximal wall on the periphery of opening) to prevent that sheath from dropping out from the distally of pin.In other embodiments, profile variations can be omitted.And sheath forms and is clasped to prevent that sheath from dropping out from the distally of pin around shank.For example, sheath can have opening, and this opening comprises in the time not being activated from wherein outstanding pin, thereby and wherein needle shield interlock or pivotable are clamped pin.As shown in the figure, needle tip protector 156 has two arm 90a, 90b of intersection, and these two arms are similar to United States Patent (USP) the 6th; in 616, No. 630 in disclosed needle shield or needle tip protector one, United States Patent (USP) 6; 616,630 content is incorporated herein by reference clearly.Although sheath 156 is illustrated as global facility, sheath 156 can be made up of multiple parts, by these assembling parts together and cooperatively interact to cover or protect needle point 92 to make it that careless acupuncture not occur.In the time observing in cross sectional side view, the point intersecting at two arm 90a, 90b, needle tip protector limits minimized profile.This minimized profile also can be called as the narrowest point, dwindle point or cross point 166.As shown in the figure, dwindle a little 166 168 places, gap that are positioned at feather valve 124, feather valve 124 can have the some amalgamations gap that forms feather valve gap, as further discussed below with reference to Fig. 2.

By the minimized profile of needle tip protector being positioned to 168 places, gap, valve 124 is can be in gap almost entirely closed, even at the ready position of Fig. 1.Therefore, an advantage with variation profile needle tip shield 156 is to allow the minimum portion 166 that changes profile to be positioned at 168 places, gap, thereby at ready position, the physically opening in gap is minimized.Minimum portion 166 on needle shield 156 also represents self-centering point, because these two arms collect at narrow point, this allows unclamp, untie or lay on the tabs (flap) at gap place is collecting the tapered direction of portion.

Therefore, the conduit tube component providing is herein understood to include the pin hub that has the catheter hub of duct conduits and have pin, and feather valve is positioned at catheter hub and in pin hub distally or overlapping with the far-end of pin hub, and spicula goes out through valve and duct conduits.Valve has the endoporus portion of through hole and expansion, and this endoporus portion has inner surface and is connected with through hole.In an example, the inside of expansion has tear-drop shape.In another example, this is shaped as flat tear-drop shape.In another example, this is shaped as substantially elliptical, has optional tip or narrow point or the end at the longer size place that is positioned at elliptical shape.The endoporus portion expanding has the section size of at least a portion for holding needle tip protector.In some instances, the expansion section of tear-drop shape cavity is even as big as holding needle shield the contact pin sheath not in the situation that.In some instances, the shape of tear-drop shape cavity is designed to closely mate the shape of needle shield, the least part of this needle shield be positioned at tear-drop shape cavity smallest point place or near.But, imagine the contacting to a certain degree between the inner chamber of endoporus portion 154 of needle shield and expansion.In an example, needle shield is partly projected into the valve of the endoporus portion 154 that is arranged in expansion, and it is positioned at valve.As described in other parts herein, the endoporus portion of expansion is through distally valve portion and between the nearside of through hole and near-end and far-end at feather valve.Needle shield also has the portions of proximal outstanding from valve proximad.In illustrated example, be projected into the needle tip protector of valve outside or the portions of proximal of sheath and be arranged in the guard shield of the far-end of pin hub.

Referring now to Fig. 2, show the end-view of the conduit tube component 100 intercepting along the line 2-2 of Fig. 1.As shown in the figure, the otch 170 by formation level to be to form upper and lower tabs 172, thereby forms the gap 168 on nearside valve surface 130.In an example, except horizontal cut 170, also comprise other otch.In other example, make two or more than three otch, in order to form gap 168.These otch can the central point on nearside valve surface 130 around interval equally.Can see at gap place two arm 90a, 90b of pin 108 and needle shield 156.

In Fig. 2, also show outstanding two of distally guard shield 162 from pin hub 106 and extend axially tab 174.Extending axially tab 174 aims at and is projected in the corresponding breach 176 in the proximal flange 132 that is formed at feather valve 124.This layout allows pin hub and catheter hub to aim at and limit relatively rotating between the two.Axially extended tab 174 also set up catheter hub for example, for example, compared with the definite physical location between hard portion (end surfaces of catheter hub body) and pin hub (tab 174 extending).By thering are two relatively hard or more rigid Surface Contacts as for axially aligned reference point, and contribute to needle point to be arranged on the position near duct conduits top or duct conduits end as far as possible.Therefore, the position of the proximal end face of feather valve 124 can change in the case of not affecting keeping flat distance (lie distance) between pin inclined-plane and duct conduits top, and this keeps flat distance should remain on minimum.In an alternative embodiment, only provide alignment function with single axially extended tab 174 and single breach 176.In an alternative embodiment, desirable defect elimination mouth 176 and corresponding tab 174, and can by the flange 132 on valve around or above extension is set aligning (axially with angle) is provided, thereby provide around flange or above aligning.

Fig. 3 A is according to the isometric view of the schematic feather valve 124 of disclosure each side.In an example, 142 places, expansion section, distally of feather valve or on form the multiple microchannels, projection or the projection 178 that limit emission path.Emission path provides discharge, so that secondary blood backflow, as previously mentioned.In another example, on expansion section 142, form helical form or spiral path, so that helical form or spiral emission path to be provided.In an alternative embodiment, valve body 146 does not have the middle part 144 of depression separately, and the middle part 14 of this depression is to provide the gap in catheter hub inside for expanding.On the contrary, thus valve body 146 normally constant and space that catheter hub is provided with depression expansion space is provided.Alternately, be not formed at the tap in elastic valve body outside, but have tap in the inner side of catheter hub, herein tap and feather valve pairing.Tap between feather valve outside and catheter hub is optional, and can omit these taps in the time tap being set between pin and feather valve.In other words, tap can be formed on the either side of pin, in this side, because existence and the pin of pin cause gap not exclusively closed with the relative geometry in gap.

In an example, valve 124 for example, is made up of two independent valve portions (84a of distally valve portion and the nearside valve 84b of portion), and these two valve portions have radially cut-off rule 86.Two 84a of valve portion, 84b can be overlapping to form sealing at middle part.Two-piece type feather valve is easily formed the hole portion expanding and is easily removed core pin by core pin allowing.In the time that valve 124 is made up of two halfbodies, can carry out mold pressing post processing to the gap on arbitrary end, for example, by using blade cuts.

Fig. 3 B is the end-view in alternative gap 168.As shown in the figure, the otch 170 and the cornerwise angle that are provided with level cut 171, to hold pin and to hold the part that extends through gap 168 of arm.

Fig. 3 C is the front end view of feather valve 124.As shown in the figure, gap 170 before the far-end of feather valve 124 arranges.This allows in the preparation use location of Fig. 1, valve is arranged on to pin top or spicula goes out through valve.Similarly, gap 172 also can have cornerwise angle and cuts 171.

Fig. 4 is the schematic sectional side view of the conduit tube component 100 of Fig. 1 under part assembled state.As shown in the figure, regain pin hub 106 from the near-end of catheter hub, to be provided for the gap of erecting tools 182.Utilize instrument 182 to open feather valve 124, thereby partly locate needle tip protector 156 by flange 132.In an example, thus erecting tools 182 is pushed to the endoporus portion 154 that opens the expansion of feather valve through the gap 168 of feather valve 124.Then, needle shield 156 distad slips into the inner space 184 of erecting tools along shank 108.Can by hold the proximal wall 186(needle shield of needle shield have towards the wall surface of nearside, towards the wall surface in distally and be formed at opening wherein) and/or make instrument 182 proximal motion (for example, by catching flange 240 the instrument proximad of making on instrument to move) remove instrument 182 by holding arm 90a, 90b simultaneously.After instrument 182 and sheaths separate, instrument 182 can lateral sliding away from pin 108.If erecting tools 182 is two-piece tool, these two can separate and mobile and away from pin so.If this instrument is single-piece, on this instrument, axial clearance is set so, for via this gap, instrument is separated with pin, as further discussed below.In another embodiment (not shown in Fig. 4), before feather valve is inserted to catheter hub, pin and needle tip protector are inserted to feather valve.This will expand feather valve by permission instrument, is even more prone to than first valve being assembled into catheter hub in advance before the hole portion needle tip protector being put into expansion.

Fig. 5 is the side elevation view of the instrument 182 of Fig. 4.As shown in the figure, instrument 182 comprises two independent tool component 182a, 182b.Each tool component has nose 190, flange 240 and the longitudinal edge 242 of elongated main body 188, taper.When the longitudinal edge 242 of two tool component 182a, 182b cooperatively interact, contact or near time, their form low profile (low profile) thus permission instrument easily through the gap 168 in valve to open through hole to needle shield is installed.After inserting through gap, can two tool component 182a, 182b be assigned to manual mode, thereby the requisite space that needle shield is installed is provided.Alternately; these two parts 182a, 182b can be fixed to a part for a device (for example automated machine equipment) or this device, thereby this device is for making them separate the endoporus portion 154 that is formed for the gap of needle tip protector or needle shield and needle shield is pushed to expansion.

Fig. 5 A is the side view of a tool part 182 of Fig. 5 of 5A-5A intercepting along the line.This there is shown along the axial groove of the whole length continuity of this instrument.

Fig. 5 B is the front end view of the assembling tool 182 of Fig. 5 of 5B-5B intercepting along the line.As shown in the figure, each instrument has and is conventionally partly oval or avette main part 188.In another example, this main part is part circular conventionally.Assembling tool 182 can be made up of duroplasts or non-oxidizable metal material.

Fig. 5 C is the side view of the alternate sets holding tool 242 that provides according to some aspects of the disclosure.This alternative instrument comprises tool body 244, and tool body 244 comprises the shape of substantial cylindrical, has along gap or the passage 246 of the length continuity of tool body.In other example, this tool body has different shapes, for example oval.Assembling tool 242 also comprises the nose 248 of taper.Cylindrical tool body limits inner space or cavity, and the size and dimension of this inner space or cavity is designed to hold needle tip protector or needle shield and can suitably compresses or push sheath.In another example, sheath can pass the inner space of instrument in the situation that not contacting instrument.

Fig. 5 D is the top view of the instrument 242 of Fig. 5 C of 5D-5D intercepting along the line.As shown in the figure, the nose 248 of taper has two otch 250, each otch in each side of the passage 246 of Fig. 5 D.The size and dimension of these two otch 250 is designed to allow or permits needle shield pass therethrough.For example, the size of otch 250 is designed to allow the proximal wall of distal wall 196a, 196b and needle shield to pass therethrough.

In use, first via passage or gap 246, this alternative instrument 242 is placed on pin 108.Then instrument 242 is pushed ahead and make the nose 248 of taper open the gap on valve, then in the time that tool body 244 enters the inner chamber of gap and expansion, this gap little by little expands.Sheath has been arranged on pin and and has inserted pin through valve, and then sheath slides past the opening of instrument 242 and partly slips into feather valve.Then by means of otch 250 in proximal wall proximad retrieving tool to cross sheath, then do lateral movement through gap 246 and away from pin, then pin with pin hub distad advances until the extension tab 174 on pin hub is placed in the proximal end face of the otch 176 of valve and the huttriall of touching catheter hub.At this point, needle point will extend from hollow conduit.The instrument 242 of Fig. 5 C and Fig. 5 D is installed to needle shield in valve, before being also used in valve being inserted to catheter hub as previously mentioned.

Fig. 6 shows according to the side view of the pin instrument 252 of some aspects of the disclosure.In an example, pin instrument 252 comprises the main body 254 with conical nose 256 and flange 258.Can be through valve and through duct conduits and pin is installed thereby the size and dimension of pin instrument 252 is designed to open the through hole of feather valve.First pin instrument 252 installs pin for process feather valve before being configured in needle shield being fixed with sheath erecting tools 182 or 242 or being installed to feather valve.In an example, pin instrument 252 is selected as having enough length, to open feather valve and the removing path through the gap, distally of through hole and feather valve is provided, to pin is installed.Pin instrument 252 can be made up of duroplasts or metal material.

Fig. 7 is the front end view of the pin instrument 252 of Fig. 6 of 7-7 intercepting along the line.This instrument has groove, passage or the gap 260 of longitudinal extension through a part for main body 254 process conical nose 256.The size and dimension in gap 260 is designed to instrument 252 to be arranged on pin and fully greatly to allow near the profile variations 94 needle point to pass from gap 260.This size configurations in this gap allows profile variations during installation allow laterally to remove pin instrument and make it away from pin to its distally slip and axial clearance 260.This instrument can be for inserting pin through feather valve before or after feather valve is assembled into catheter hub.

Therefore, the conduit tube component providing herein comprises the catheter hub of carrying pipe pipeline and the pin hub with pin, and has the distally that is positioned at the feather valve of catheter hub inside and the pin hub of the outstanding pin through valve and duct conduits of band.Valve comprises the expansion endoporus portion with inner surface, and is connected with the through hole being formed in valve, for example, pass through the distally valve portion of feather valve.The endoporus portion expanding has the section size for holding at least a portion needle tip protector.As shown in the figure, erecting tools comprises axial clearance, thereby the installation path that is formed for the far-end of sheath to insert valve inside can be inserted through the gap on valve in this axial clearance.Subsequently, erecting tools can be on pin proximal motion, then laterally make instrument separate with pin via axial clearance.In some instances, erecting tools is to be made up of the parts of two separation, and insert in the general gap through feather valve that first these two separating components linked together.Once insert, make this two independent isolation of components, to be provided for installing the path of needle shield.

Another aspect of the present disclosure comprises for the pin erecting tools of pin being installed through feather valve and jacket portions being arranged on to the sheath erecting tools of feather valve.Preferably, first utilize pin instrument that pin is installed, then utilize sheath erecting tools that needle shield is installed.Therefore, comprise the following steps according to the method for disclosure each side: the expansion endoporus portion of through the inner chamber of valve and duct conduits, pin being installed with pin instrument and utilizing sheath erecting tools that needle shield part is arranged on to feather valve makes needle shield part be positioned at the inside of valve and part to be positioned at the outside of valve.The method can also comprise the following steps: needle shield is arranged on to the portion that dwindles that valve inside makes sheath and is positioned at the gap place on valve.The method can also comprise: valve is arranged on to the proximal wall surface (this wall surface has the endoporus portion with the expansion being connected compared with small section size through hole) that catheter hub inside makes valve and is positioned at the outside of catheter hub, thereby be convenient to clean proximal wall surface with antiseptic.Catheter hub can comprise one or more side openings, for hold this valve when for example, make valve expansion with positive type utensil (IV top, top, Rule or syringe top).

Fig. 8 is the cross sectional side view of the conduit of Fig. 1 after the vein that successfully punctures and after regaining pin, needle shield protection needle point and pin hub, as United States Patent (USP) the 6th, described in 616,630.At this point, the gap 168 on feather valve 124 is in the opening closure at 130 places, proximal wall surface, thereby stops or limit any blood or liquid goes out through slot leakage.Catheter hub 102 prepares to receive medicinal liquid, intravenous fluid or transfusion now.Alternately, can then vacuum tube be advanced on this adapter by syringe or the blood collecting adapter on the positive type female Luer of attached band top, and extract blood sample out through catheter hub.In addition or before taking any described step, valve 124 provides the proximal wall surface 130 of exposure, and this surface can be by for example, carrying out wiping with the exposed surface of clean thing (prewet swab, cotton balls, medical alcohol sheet, wipe pad etc.) wiping proximal wall and antiseptic is cleaned simply.Wall surface 130 is expedite, therefore with at the valve of the proximal end of catheter hub 102 be not for example, while exposing (being recessed in catheter hub inside) completely compared with, can clean in the case of cleaning the angle of feather valve or gap.

As shown in the figure, by positive type utensil 200(for example positive type female Luer, syringe top, sharp shaped material or other medical connector) promote the gap at 130 places, proximal wall surface of the proximal flange 132 that is passed in valve.Sun type utensil 200 is understood to be connected to fluid source, pipe fitting or both.The size of sun type utensil forces through hole 152 outwards to expand and makes a part for valve body 146 expand and fill the inner chamber of catheter hub and expand into outside hub opening 80,82.Between the outer surface of positive type utensil 200 and through hole, form sealing, the elasticity of the valve material of sealing by pushing positive type utensil outer surface forms.In another embodiment, feather valve 124 expands but is not limited in valve body or the interior intracavity of catheter hub, and the inner chamber of catheter hub has been designed to exceed stock size to hold the valve of expansion without any hub opening in the situation that.Alternately, can provide trocar sheath to cover opening 80,82, make in the time that valve expands, any part of valve does not expose.Sleeve pipe can also hold any secondary backflow towards catheter hub inside.

Valve 124 can be reused.For example, after use, can remove positive type utensil 200, for example, when being drained with box lunch and replacing with new fluid source or change fluid source when utilize the attached blood-taking device of standard male type Rule cone joint, thereby and feather valve 124 will automatically close that its gap 168 at near-end stops or the leakage of valve at nearside passed through in restriction.In some instances, in the time removing positive type utensil, valve body 146 resiliences closed through hole 152.In other example, can utilize syringe through pipe guide and injectable drug, or from pipe guide, extract fluid out.In the time removing syringe, through hole 152 is closed automatically.

Referring now to Fig. 9, there is shown alternative safety IV C 210, except needle shield 212, all the other are similar to the safety IV C 100 of Fig. 1 to this safety IV C 210.In the present embodiment, needle shield has single protection arm, and this protection arm intersects with needle axis in the position in gap 168.Therefore,, as the sheath 156 of Fig. 1, needle shield 212 has the part that is positioned at valve inside and the part that is positioned at valve outside.Needle shield also comprises proximal wall 214, and proximal wall 214 has the opening 216 that is positioned at pin around or is positioned at pin top.Proximal wall 214 and opening 216 can be configured to engage with the profile variations on pin, distad advance and leave pin to stop needle shield, and proximal wall can be from its illustrated more vertical position run-off the straight, so that opening 216 is clamped pin and is distad advanced to stop, or it has opening arm 218(, so that pin passes therethrough) thus can further tilt to clamp pin in the situation that there is no profile variations.Or these two openings are common to be coordinated so that pin tilts and clamps pin.In other example, needle shield 212 is remained to pin hub 106 by available tether (not shown).In an example, needle shield 212 is United States Patent (USP)s the 6th, one of sheath described in 616, No. 630.

Figure 10 is according to the cross sectional side view of the alternative safety IV C 220 of some aspects of the disclosure.Safety IV C comprises the catheter hub 222 with duct conduits 104 and feather valve 226, is similar to the safety IV C of Fig. 1 and Fig. 9.In the present embodiment, catheter hub 222 is to be made up of multiple parts.Particularly, catheter hub 222 comprises distally hub section 228a and nearside hub section 228b, and gap or passage 230 are formed between them for the distal lip 232 on elasticity of compression valve 226, and this is different from the distal part 142 of the included expansion of the valve of Fig. 3.Feather valve 226 also comprises distally depression 148, through hole 152 and for receiving the endoporus portion 154 of expansion of a part of needle shield (not shown), needle shield has the part of the endoporus portion 154 that is positioned at expansion and the part that proximad extends and extend feather valve.Between feather valve 226 and catheter hub 222, be provided with gap 234, thereby space is provided, while expansion by positive type utensil (example is positive type utensil as shown in Figure 8) with convenient valve body, valve body expands.

Figure 11 is the needle shield of Fig. 1 or the perspective view of needle tip protector 156.As shown in the figure, this needle shield comprises proximal wall 186, and this proximal wall 186 comprises the periphery 270 that limits opening 272.Proximal wall 186 is positioned at the near-end 274 of sheath, when be in prepare use position time this sheath nearside 274 be expose or in the outside of feather valve, as shown in fig. 1.Shown in figure, sheath 156 also has the portion of dwindling 166 and has the distal part 276 of two distal wall 196a, 196b.In use, two distal wall are positioned at the inside of valve, in the inner space expanding.

Between proximal wall 186 and arm 90a and 90b, there is respectively bending or bending section 187a and 187b.Similarly, between arm 90a and 90b and distal wall 196a and 196b, there is respectively bending or bending section 197a and 197b.In the time that pin is between distal wall 196a and 196b, the distance between bending or bending section 187a and 187b should be equal to or less than the distance between bending or bending section 197a and 197b.This is convenient to assembling and allows to remove simply the assembling tool shown in Fig. 5,5A, 5B, 5C and 5D.

Lip or hook 198a and 198b lay respectively at distal wall 196a and 196b with bending or the bending section 197a end relative with 197b.In an example, the distance between inside edge and arm 90a and the 90b of lip or hook 198a and 198b should be about respectively the half of pin diameter, so that stop needle point distad outstanding from needle tip protector.In other example, this size is slightly larger than the half of pin diameter or is slightly less than the half of pin diameter.

Figure 12 is the perspective view of the needle shield 212 of Fig. 9.As shown in the figure, sheath has arm 218 and distal wall 292, and arm 218 comprises the opening 290 of elongation, and in one embodiment, this opening 290 is the elongated gaps with round nose 300a, 300b, and distal wall 292 has the bending lip in distally or hook 294.Arm also has the oblique portion 296 along proximal direction.At the near-end of needle shield 212, in proximal wall 214, be provided with the bending lip of opening 216 and nearside or foot 298.At ready position, spicula goes out through the opening 290 of proximal open 216 and elongation and in the over top of distally bending lip 294 to pass.At active position, proximad is regained pin, until needle point moves to the nearside of the bending lip 294 in distally.At this point, the arm 218 of no longer being setovered by pin radially swings, and makes two rounded ends 300a, 300a elongating opening 216 can clamp pin with restriction or constraint needle shield distal motion and leave needle point.Thereby the distance between the arm 218 of the inward flange of lip or hook 294 and needle shield 212 should be about a pin diameter is convenient to stop needle point to leave needle tip protector in distally.

Figure 13 is according to the perspective view of another alternative needle shield device 213 of disclosure each side.Alternative needle shield 213 has about 180 degree of rotation compared with sheath in Figure 12 and distal wall 292 down.Therefore, this sheath comprises distal wall and the proximal wall of all pointing to equidirectional.In this alternative needle shield, the opening 290 of elongation is optional and can omits.Compared with the arm of Figure 12, arm 218a can be narrow many or even radially bend, to mate more closely the shape of pin, and therefore the material in the outstanding nearside gap through feather valve 126 is reduced to minimum.In an example, the width of arm 218a is approximately the arm thickness that the diameter of pin adds twice.In other example, this width can be greater or lesser.The height of the bending section of arm can be approximately the half of pin diameter or less.If the height of arm 218a is less than the half of pin diameter, width can be less than pin diameter so.Make arm 218a bend and can increase its elastic strength in the section perpendicular to pin.Bending must be more severe, arm is just harder.

Although specifically described in the text and illustrated the limited embodiment of safety IV C and parts thereof, those skilled in the art will dream up many modifications and variant.For example, various needle shields disclosed herein can comprise further feature, for example, cover other protection coating of the periphery of needle point etc.In addition, should understand and expectedly, if function is compatible mutually, the concrete discussion feature of a safety IV C embodiment can be included in another safety IV C embodiment.For example, although not shown needle shield in Figure 10, any needle shield that other parts are discussed herein can be used for the catheter hub of the Figure 10 that uses one of erecting tools disclosed herein.Another example comprises and adopts other safeguard structure, for example, for holding the 3rd hub of a part of the sheath that extends to feather valve outside.Therefore, it should be understood that according to the safety IV C of the principle manufacturing of device disclosed herein, system and method and parts thereof and can adopt specifically described mode in addition herein to implement.The disclosure is also limited in claims.

Claims

1. a safety IV catheter, is characterized in that comprising:

Be attached to the catheter hub of duct conduits,

Be attached to the valve of described catheter hub, described valve comprises inner chamber, is exposed to proximal end wall and the gap of described catheter hub outside;

Be attached to the pin hub of pin, and described pin extends past described duct conduits;

Needle tip protector, described needle tip protector comprises distal portions, comprises the proximal wall of opening and the low profile between described distal portions and described proximal wall; And

Wherein, the distal portions of described needle tip protector is arranged in the inner chamber of described valve and described proximal wall and is positioned at the outside of described valve.

2. safety IV catheter as claimed in claim 1, is characterized in that, described low profile is positioned at described gap place.

3. safety IV catheter as claimed in claim 1, is characterized in that, described needle tip protector comprises two arms intersected with each other, and wherein, described low profile is positioned at the position that described two arms intersect.

4. safety IV catheter as claimed in claim 1, is characterized in that, described pin comprises fold.

5. safety IV catheter as claimed in claim 4, is characterized in that, the size of described fold is designed to be greater than the opening in described proximal wall.

6. safety IV catheter as claimed in claim 1, is characterized in that, described valve extends at the nearside of described catheter hub, and it is wider than described catheter hub to have at least a portion.

7. safety IV catheter as claimed in claim 1, characterized by further comprising erecting tools, the distal part of described erecting tools for described needle tip protector being installed through described gap.

8. a safety IV catheter, is characterized in that comprising:

Be attached to the catheter hub of duct conduits;