CN202682467U - Conduit and introducing needle component - Google Patents
Conduit and introducing needle component Download PDFInfo
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- CN202682467U CN202682467U CN 201220075144 CN201220075144U CN202682467U CN 202682467 U CN202682467 U CN 202682467U CN 201220075144 CN201220075144 CN 201220075144 CN 201220075144 U CN201220075144 U CN 201220075144U CN 202682467 U CN202682467 U CN 202682467U
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Abstract
The utility model relates to a conduit and introducing needle component. The conduit and introducing needle component comprises a conduit base, a polyurethane extension tube connected to the conduit base, and a safety device arranged inside the conduit base, wherein the safety device comprises a spring clamp; the spring clamp is provided with at least one first clamping part, at least one second clamping part and a baffling plate; after an introducing needle is pulled out, the first clamping part is irreversibly engaged with a first clamped part on a needle hood; and before the baffling plate moves to a far end of the introducing needle, a limiting device prevents the far end of the introducing needle from moving out of the needle hood.
Description
Technical field
The application relates to a kind of conduit and introduces needle assembly.
Background technology
Catheter in blood vessel, particularly venous duct (IV conduit) are normally used for the infusion fluid to patient, such as common saline solution, various medicine and injection nutriment etc., perhaps are used for extracting blood in the patient body.The systemic vein conduit is usually shorter, and size is probably at two inches or shorter.The conduit of common type is to be enclosed within a systemic vein conduit of introducing on the pin.This systemic vein conduit that is enclosed within on the introducing pin is to be assemblied on the introducing pin with sharpened tip.Conduit and introducing pin are assembled into, and the needle point of introducing pin extends beyond the tip of conduit, and the inclined plane of introducing pin needle tip up.
Conduit and introduce needle assembly and pierced through patient's skin and enter into peripheral vessel with a shallow angle, described peripheral vessel does not directly link to each other with heart, but continuous with one of central vessel branch that directly links to each other with heart.In a kind of technology, introduce pin and conduit and penetrated in the blood vessel fully together therein.And in another technology, introduce pin and after the venipuncture of beginning, partly extracted out from conduit.Then, conduit is fully inserted in the blood vessel.
After conduit and introducing needle assembly were inserted in the blood vessel, important was to need to confirm whether this assembly be in correct location in blood vessel.Whether correctly in order to confirm described assembly location, the medical worker need to be confirmed whether at the introducing pin and be arranged in the back cavity of introducing the pin proximal end have backflow blood to exist.Usually this back cavity consists of the part of catheter block.As another scheme, introduce pin and can be provided with a groove or opening at its distal portions, like this, when conduit is made by transparent or semitransparent material, can in the annular space of introducing between pin and the conduit, observe blood backflow.In case correct location confirmed, the medical worker will be by pressing patient's skin downwards at the most advanced and sophisticated position of introducing pin and conduit tube component and blood vessel being exerted pressure.The pressure of finger passes through to introduce pin with the further blood flow of obturation.Also can realize by a batching pig obturation of blood flow.The medical worker extracts the introducing pin out and conduit is stayed the original place, then liquid transporting apparatus is connected to conduit such as the unfractionated heparin medicated cap or with skull.Extract out from conduit in case introduce pin, it will with " being infected with the needle point of blood ", must correctly be disposed.
In recent years, the patient of blood may be infected with to(for) the medical worker has had very large concern, has realized that " needle point of being infected with blood " must dispose immediately.This concern is increasing, because the fatal disease that can't treat at present occurred, such as, acquired immune deficiency syndrome (AIDS) (AIDS), these diseases may be delivered to the another one people from an infected person by the exchange of body fluid.Therefore, contact and to avoid with the body fluid of AIDSinfected patient.Such as described above, be used to a conduit is placed in the blood vessel of AIDSinfected patient if introduce pin, this introduces the medium that pin is exactly the transmission disease so.Need correct process " being infected with the needle point of blood " although the medical worker has known, unfortunately under some medical environment, such as in emergency circumstances or owing to not being careful or neglecting, still exist the situation that the introducing pin be infected with stabs the medical worker.
The problem that arrives in order to solve the unexpected thorn of above-mentioned quilt " needle point that blood is infected with " has been developed various introducing pin safety devices.
American documentation literature US6287278 discloses a kind of IV conduit tube component, and this IV conduit tube component is provided with an alligator clamp that is used for protecting user.Yet this IV conduit tube component is not provided with outer housing or surrounds the outer housing of described alligator clamp.Although described alligator clamp can prevent user and touch the needle point of introducing pin, it can not prevent that user from touching the remained blood that is positioned on the needle point, and is particularly, all the more so when introducing pin and be provided with some circumferential apertures such as the backflow groove.So the IV conduit tube component among the US6287278 still is unsafe for the user.
Disclose a kind of conduit among the american documentation literature US5215528 and introduced needle assembly, had a metal clip in this assembly, this metal clip prevents that user is introduced into pricking wound after conduit is inserted in the blood vessel and extracts the introducing pin out from conduit.As shown in the accompanying drawing of US5215528, conduit and introducing needle assembly have a plurality of arc convex 50 that stretch out from flange 48, and these arc convex limit and form a containing seat 53, keep catheter block 52 in this containing seat 53.One end of body 38 limits lobe 38a of formation and extends in the catheter block.The end of arc convex 50 comprises some lips that extend internally 54, and these lips are keeping the flange 56 of catheter block releasedly.Arc convex 50 and lip 54 be designed to joint flange 56 and so that with remove catheter block 52 from containing seat 53 and compare, user is easier of introducing the pin needle stand pin cover of backing off by means of protuberance 48b.Yet above-mentioned matching relationship is also unreliable, because it depends on manufacturing tolerance.Like this, the disengaging between catheter block and introducing pin pin cover is unpredictable, may just break away from before needle point is got up by safeguard protection.It is inappropriate that this unsettled behavior needs in the environment of accuracy and reliability at some.
US6749588 discloses a kind of conduit with the pin cover and has introduced needle assembly.Be provided with an alligator clamp in this pin cover.To introduce after pin extracts out, and will be held on the needle point of introducing pin with the pin cover of alligator clamp, thereby prevent that user from touching the bloodstain on the needle point.Yet, this pin cover can not prevent others' recycling after use, namely, and after introducing the pin extraction, can also be in the situation that do not damage the pin cover or alligator clamp takes out alligator clamp from the pin cover, then will introduce pin and reinsert and reach the purpose of reusing in the conduit.
The utility model content
One of purpose of the application provides a kind of conduit and introduces needle assembly, and it can prevent not only that user from inserting blood vessel and introducing pin at conduit and touch needle point after extracting conduit out but also can prevent that user from touching the residue on the needle point.
The another purpose of the application provides a kind of conduit and introducing needle assembly with safety device, it can prevent that pin cover, introducing pin or whole assembly from being re-used after extracting the introducing pin out, that is, user can not be pulled out alligator clamp pin after extracting out and resets and get back to original compact model being introduced pin.
The another purpose of the application provides a kind of conduit and introduces needle assembly, and the material of its extension does not contain ditridecyl phthalate (DEHP), thereby avoids oozing out in use DEHP.
The application's one side provides a kind of conduit and has introduced needle assembly, and it comprises:
Conduit tube component has: conduit has far-end and near-end; Catheter block, this catheter block is communicated with described catheter fluid, and this catheter block has near-end and far-end, and the far-end of catheter block links to each other with the near-end of conduit; And extension, be connected to the lateral port of catheter block, wherein, this lateral port is communicated with this catheter block fluid, and this extension is to make with polyurethane material;
Introduce needle assembly, have: introduce pin, have near-end, far-end and longitudinal axis; Introduce the pin needle stand, be fixed to the near-end of introducing pin, described introducing pin is contained in the conduit;
Safety device, comprise: the pin cover, this pin cover limits and forms longitudinally extending channels, and transversely be provided with opening in the longitudinally direction of this longitudinally extending channels, the diameter of longitudinally extending channels is a bit larger tham at least the diameter of introducing pin and can passes described longitudinally extending channels in order to introduce pin, described pin cover be formed with at least one first by Access Division and at least one second by the Access Division; Alligator clamp, be provided with at least one first Access Division, at least one the second Access Division and catch, described alligator clamp is installed in the pin cover by described opening, the second Access Division of alligator clamp is irreversibly meshed by the Access Division with second of pin cover, described alligator clamp be suitable for one introducing in substantially perpendicular to the plane of introducing the pin longitudinal axis pin before extracting out compact model and introduce pin opening between the pattern after extracting out and stretch; And stopping means, being used for after introducing the pin extraction, the far-end that pin is introduced in restriction shifts out outside the pin cover;
Wherein, before introducing the pin extraction, described alligator clamp is through the introducing pin that extends passage and is resisted against described compact model, and the second Access Division of alligator clamp is irreversibly meshed by the Access Division with second.And when extract out to introduce pin and introduce pin when moving through alligator clamp, alligator clamp is discharged by described introducing pin and flicks the described pattern of opening, after introducing the pin extraction, the first Access Division of alligator clamp irreversibly mesh the pin cover first by the Access Division, described catch move to the far-end the place ahead of introducing pin and the far-end that prevents from introducing pin to move to the pin cover to distal direction outside.The first Access Division and first is prevented that by the engagement between the Access Division alligator clamp from being recompressed after introducing the pin extraction, and the second Access Division and second by the engagement between the Access Division prevent alligator clamp introduce pin extract out before and be pulled out afterwards the pin cover, stopping means introduce pin extract out after the far-end of restriction introducing pin shift out outside the pin cover towards proximal direction.
Be appreciated that the application's above-mentioned advantage and other advantage by reference accompanying drawing reading description hereinafter, shown in the accompanying drawing is the application's preferred embodiment.
Description of drawings
The preferred implementation of showing with reference to the accompanying drawings hereinafter is described the application.
Fig. 1 has showed the whole product with the conduit of the application's safety device and introducing needle assembly.
Fig. 2 has showed conduit shown in Figure 1 and has introduced the exploded view of needle assembly.
Fig. 3 has showed the enlarged drawing of the alligator clamp among the application the first embodiment.
Fig. 4 has showed the conduit of the first embodiment and the partial view of introducing needle assembly, has wherein showed the state before alligator clamp triggers, and at this state, alligator clamp is folded in its compact model and is introduced into pin and remains on this compact model.
Fig. 5 has showed the conduit of the first embodiment and the another one partial view of introducing needle assembly, and it has showed that also alligator clamp triggers state before.
Fig. 6 is a perspective view, and it has showed the position of the first Access Division before alligator clamp triggers of the alligator clamp that is arranged in the pin cover.
Fig. 7 has showed the another one view of safety device before alligator clamp triggers among the first embodiment.
Fig. 8 has showed the conduit of the first embodiment and has introduced the partial view of needle assembly state after alligator clamp triggers.
Fig. 9 has showed the conduit of the first embodiment and has introduced the another one view of needle assembly state after alligator clamp triggers.
Figure 10 has showed the conduit of the first embodiment and has introduced the another one view of needle assembly state after alligator clamp triggers.
Figure 11 is a perspective view, has showed the position of the first Access Division after alligator clamp triggers of the alligator clamp in the pin cover.
Figure 12 is profile, and it has showed that the needle point of introducing pin after alligator clamp triggers is with respect to the position relationship of the washer of alligator clamp.
The displaying of Figure 13 packing ring block and introduce the motion of pin on direction backward.
The view shows of Figure 14 the second Access Division of alligator clamp and be positioned at the pin cover second engaged and prevent from re-using by the Access Division.
Figure 15 is an exploded view, and it has showed the second embodiment of the safety device that comprises the V-arrangement alligator clamp.
Figure 16 has showed the V-arrangement alligator clamp among the second embodiment.
Figure 17 has showed the state of safety device after alligator clamp triggers among the second embodiment.
Figure 18 has showed the packing ring that uses in a second embodiment.
Figure 19 has showed the 3rd embodiment of safety device, wherein serves as stopping means with tether.
The specific embodiment
In this article, term " near-end " and " far-end " are to describe the position that is positioned on conduit and the introducing needle assembly 10 for introducing pin needle stand 34.Term " direction forward " refers to towards the direction of introducing the pin needle point, and " direction backward " refers to towards the direction away from needle point.
In this application, in different embodiment, adopt identical label to identify identical position or parts.In addition, although the application can be implemented by the embodiment of various ways, only be the application's preferred implementation what shown in the accompanying drawing and hereinafter describe in detail, the application's protection domain is limited to the appended claims.
The first embodiment of the application has been shown in Fig. 1-14.
As illustrated in fig. 1 and 2, with the conduit of the safety device of the application's the first embodiment with introduce needle assembly on the whole by label 10 signs.It comprises conduit tube component 20, introduces needle assembly 30 and safety device.
Introduce needle assembly 30 and comprise introducing pin 31, this introducing pin 31 has the sharp distal needle point 32 that is formed by the inclined-plane and the near-end that links to each other with introducing pin needle stand 34.Near sharp distal needle point 32, introduce the position 33 that pin 31 comprises a sudden change, for example in the present embodiment, the position 33 of this sudden change can be the mutable site that a diameter increases.Introducing pin 31 is preferably made by rustless steel.Alternatively, backflow groove 35 can be arranged on to introduce on the pin 31 and introduce the blood backflow in the annular space between pin 31 outer surfaces and conduit 21 inner chambers in order to observe.In another alternative, the groove 35 that also can not reflux, but the backflow chamber of an integral body can be set in introducing pin needle stand 34.Introducing pin needle stand 34 is preferably made by the material identical with catheter block 24.Preferably, can extend one at introducing pin needle stand 34 and grip sheet 36 for gripping.When fitting together, conduit 21 is enclosed within to be introduced outside the pin 31.
Described safety device comprises pin cover 40, and this pin cover 40 preferably is made of plastics.Safety device also comprises the alligator clamp 50 that is installed in the pin cover 40, such as Fig. 2, and 4, and shown in 5.As shown in Fig. 8-10, in case conduit 21 is inserted in the blood vessel and introduces pin 31 and extract out from conduit, pin cover 40 and alligator clamp 50 will be held on the needle point of introducing pin, thereby prevent that user from being stabbed by needle point.Pin cover 40 limits to be formed with and extends longitudinally passage 42.Extend longitudinally passage 42 and can allow that introducing pin 31 vertically passes pin cover 40.The diameter that extends passage 42 will be a bit larger tham the diameter of introducing pin 31 bar sections at least.Extension passage 42 easily passes in the bar section that can allow like this introducing pin 31.Extend passage 42 and comprise distal portions 44 and proximal part 45, distal portions 44 is being extracted the near-end that surrounds catheter block 20 before introducing pin 31 out, and proximal part 45 seals in it extracting the distal portions that will introduce pin 31 after introducing pin 31 out.Safety device also comprises stopping means 80, and this stopping means will move to outside the pin cover 40 by the needle point of restriction introducing pin after introducing pin 31 extractions.
As shown in Figures 4 and 5, the direction along its longitudinal axis is provided with opening 60 on pin cover 40.This opening 60 communicates with extension passage 42.Alligator clamp 50 is installed in the pin cover 40 by opening 60.Before the extraction of introducing pin 31, alligator clamp 50 will be folded into its compact model and be introduced into pin 31 and be resisted against its compact model, and in this case, alligator clamp 50 will be positioned at a side (referring to Fig. 4,5 and 7) of the axis of introducing pin 31.After extracting introducing pin 31 out, introduce pin 31 retracting springs folder 50, thereby returning to it from its compact model, alligator clamp 50 opens pattern (referring to Fig. 8-10).When the needle point of introducing pin 31 moves through alligator clamp 50 during the extraction of introducing pin 31, it will trigger alligator clamp 50 (will be called " triggering of alligator clamp ") hereinafter from compact model to the motion of opening pattern.
The application's alligator clamp 50 is formed with at least one first Access Division 52 thereon, at least one second Access Division 55, at least one the 3rd Access Division 51 and catch 53.The first Access Division 52 and the second Access Division 55 be suitable for locking be arranged on first on the pin cover 40 by Access Division 47 and second by the Access Division (not shown), thereby prevent re-using after alligator clamp triggers.When alligator clamp 50 was in compact model before triggering, the 3rd Access Division 51 was suitable for and is formed on being meshed by Access Division 25 on the catheter block 24.Catch 53 settings are used for blocking the introducing pin and move towards distal direction after alligator clamp triggers.These can describe in further detail hereinafter.
Figure 3 illustrates the alligator clamp 50 among the application the first embodiment, although this alligator clamp 50 can be other shape, it preferably can be the V-arrangement alligator clamp among this first embodiment.Alligator clamp 50 is installed in the pin cover 40 by opening 60, and the direction opposite with opening 60 pointed on the summit of V-arrangement, and when alligator clamp 50 was in it and opens pattern, the two legs that forms V-arrangement will straddle on introducing pin 31 longitudinal axis.With this locate mode, when alligator clamp triggered, alligator clamp 50 was suitable for transverse to the longitudinal line of movement of introducing pin 31.The route that this motion can a ramp surface on the pin cover 40 limits carries out.Certainly, alligator clamp 50 summit that can be arranged to its V-arrangement in pin cover 40 is positioned at other position with the circle of introducing pin 31 longitudinal axis coaxial lines.Necessary is that alligator clamp 50 is suitable for transverse to the longitudinal line of movement of introducing pin 31.The summit of V-arrangement is convenient to it and is opened towards compact model compression or from compact model.In addition, the summit of V-arrangement also can be the form of loose-joint butt.
In the first embodiment, alligator clamp 50 limits one of two legs of formation V-arrangement and is provided with the clamping limb 54 that is in substantially parallel relationship to the extension of introducing pin 31 longitudinal axis directions.Be formed with two protruding fingers at vertical two ends of this clamping limb 54.Preferably, two protruding fingers, extend perpendicular to the longitudinal axis of introducing pin 31 substantially.The first Access Division 52 is formed on one of described protruding finger, and the 3rd Access Division 51 is formed on the protruding finger of another one.On this first embodiment, the first Access Division 52 can be at least one non-return latch or agnail from giving prominence to towards pin cover 40 on the described protruding finger.Can be non-return latch or recess and be formed at first on the pin cover 40 by Access Division 47, this illustrates in Figure 14 better.Form the free end of the other one leg of V-arrangement in the restriction of alligator clamp 50, form protruding finger 56 by this free end of folded towards V-arrangement.The second Access Division 55 is formed on this protruding finger 56.As shown in Figure 3, the second Access Division 55 can be at least one non-return latch or agnail.When alligator clamp 50 is installed in the pin cover 40, protruding finger 56 will be inserted in the groove 49 (referring to Fig. 7) that is formed on the pin cover 40, as the non-return latch of the second Access Division 55 or agnail will with the inwall that is formed on this groove 49 on second by for example non-return latch or the engagement of recess (not shown) of Access Division, like this, in case the protruding finger 56 of alligator clamp 50 is inserted in the groove 49 just can not be pulled out.As another scheme, the second Access Division 55 also can be other structure, such as the flange that forms by the free end that bends protruding finger 56.Necessary is that the second Access Division 55 and second should be prevented that alligator clamp 50 from being extracted by the Access Division (not shown) after their engagements from pin cover 40.
Because the effect of the first Access Division 52 and the second Access Division 55, after alligator clamp triggers, user is in the situation that destroy alligator clamp or the state of pin cover before alligator clamp being got back to trigger, thereby prevented alligator clamp or introduced pin or whole conduit and introduce reusing of needle assembly.
As mentioned above, in the first embodiment, the 3rd Access Division 51 is for being formed at the protruding finger on the clamping limb 54 that is in substantially parallel relationship to the longitudinal axis extension of introducing pin 31.The 3rd can be formed in flange on the catheter block 24, screw thread, groove, non-return latch etc. by Access Division 25.Although the 3rd Access Division 51 and the 3rd is preferred by the use of Access Division 25, because mechanical connection initiatively can be provided between pin cover 40 and catheter block 24 like this, yet the 3rd Access Division 51 and the 3rd is not necessary by Access Division 25.If without them, can utilize frictional force between pin cover 40 and the catheter block 24 as engaging force, such frictional force more easily overcomes than above-mentioned active mechanical engaging force.Yet in some cases, such frictional force is enough.
The setting of catch 53 is to prevent from introducing pin to move in direction forward after alligator clamp triggers.This will be described in more detail below.Although on this catch 53, preferably do not have the hole, as another alternative, also can be provided with the hole on the catch 53, but the internal diameter in this hole should be larger than the bar section diameter of introducing pin 31, but less than the augmenting portion 33 of introducing pin 31.Like this, after alligator clamp triggered, the needle point of introducing pin can be inserted in this hole, but the augmenting portion of introducing pin 31 is but blocked by this hole.
Fig. 4 shows conduit and introduces the state of needle assembly before the triggering of alligator clamp 50.In this state, alligator clamp 50 is folded in its compact model and is installed in by opening 60 in the extension passage 42 of pin cover 40.Alligator clamp 50 be introduced into pin 31 against and remain on this compact model.The end of catheter block 24 by the end portion 44 of the extension passage 42 of pin cover 40 around encirclement.
Fig. 5 shows the another one view of state before the spring of alligator clamp 50 triggers.This alligator clamp 50 is introduced into pin 31 and remains on compact model.The 3rd Access Division 51 and the 3rd is meshed by Access Division 25, and the described the 3rd for example can be the flange that is positioned on the catheter block 24 by Access Division 25.Fig. 6 is clearly shown that residing position before alligator clamp triggers, the 3rd Access Division 51 more.In this state, the 3rd Access Division 51 extend in the distal portions 44 that extends passage 42 and with being positioned at the 3rd on catheter block 24 close ends and is meshed by Access Division 25, has so just prevented that on one's own initiative pin cover 40 from removing from catheter block 24.
Fig. 7 shows the another one view that alligator clamp triggers front state.Alligator clamp 50 is introduced into pin 31 and remains on compact model.The 3rd Access Division 51 extend into around in the distal portions 44 that surrounds in the catheter block 24.
Fig. 8,9, and 10 states that show after alligator clamp 50 triggers.In case conduit 21 is inserted in the blood vessel, the medical worker will extract out from conduit 21 and introduce pin 31.Withdraw from motion along with introducing pin 31 from conduit 21, the alligator clamp 50 that is in compact model will be introduced into pin 31 and discharge after the needle point of introducing pin 31 move through alligator clamp 50, thereby alligator clamp 50 flicks it from its compact model and opens pattern.When alligator clamp 50 opens, the 3rd Access Division 51 will no longer extend in the end portion 44 of extending passage 42, thus be positioned at the 3rd on the catheter block 24 and broken away from engagement by Access Division 25.In this case, pin cover 40 can move freely in backward direction along the axis of introducing pin 31.The action of opening owing to alligator clamp 50, the catch 53 of alligator clamp 50 will never seal the position that the position movement that is positioned at the hole 46 on the proximal part that extends passage 42 arrives this hole 46 of sealing, introducing pin 31 will be retracted in this proximal part that extends passage (referring to Fig. 8,10 and 12).Like this, catch 53 will prevent from introducing pin 31 and moves forward and reenter in the conduit 21.Simultaneously, stopping means 80 will limit and introduce pin 31 and be moved out to outside the pin cover 40 after alligator clamp triggers.In this embodiment, stopping means 80 can be a packing ring, and a hole is arranged on this packing ring, and the size in this hole should be slightly larger and less than introducing the sudden change part 33 that diameter increases on the pin 31 than the diameter of introducing pin 31 shanks part.This packing ring can be installed in the cavity in pin cover 40 proximal parts, introduces pin 31 and passes from the hole of packing ring.Packing ring 80 will block the diameter of introducing pin 31 and increase position 33.Like this, the distal portions of introducing pin 31 will be closed in the proximal part 45 that extends passage 42 and cannot see.Thereby the residual bloodstain on the needle point will be enclosed in the proximal part 45 that extends passage 42.
After alligator clamp triggers, be positioned at the first Access Division 52 (user will be cannot see) engagement on the alligator clamp 50 be positioned at first on the pin cover 40 by Access Division 47 preventing that alligator clamp 50 from being compressed again, thereby prevented from re-using.By means of first by the engagement of Access Division 47 and the first Access Division 52, will prevent that alligator clamp 50 is reset and gets back to the state before triggering, thereby prevent from re-using.
Such as Figure 10, shown in 12 and 13, the packing ring 80 that serves as in the present embodiment stopping means is arranged in the extension passage 42 of pin cover 40.The size in the hole of this packing ring 80 will allow that the even shank of introducing pin 31 partly passes the sudden change part 33 that still will block the diameter increase of introducing pin 31.Like this, the hole of packing ring 80 will be blocked the diameter-increasing portion 33 of introducing pin 31 and stop the further extraction of introducing pin 31.
The sudden change part 33 that diameter increases can for example be a projection, and its position should make blood backflow groove 35 (if there is) of introducing on the pin 31 and the needle point of introducing pin be closed in the proximal part 45 that extends passage 42 when it is blocked by packing ring 80.In addition, described projection is positioned at the place ahead of groove 35, and like this when blood backflow occurs, this projection 33 can not have backflow and reduces effect.This projection can be an independent iron hoop, it is installed in introduces on the pin 31, yet this projection preferably forms by opposite 2 of respective regions that pin 31 is introduced in extruding, and the zone that is squeezed will become flat and form significantly projection in the direction vertical with extruding.Such projection can be called as " expression lobes ".
As shown in Figure 8, along with the further extraction action of introducing pin 31, introducing needle assembly 30 and pin cover 40 will break away from catheter block 24 because this moment alligator clamp 50 the 3rd Access Division 51 and conduit 24 the 3rd broken away from engagement by Access Division 25, and the projection of introducing pin 31 is blocked by packing ring 80.
Certainly, the first Access Division 52 can be different from for other structure of the first embodiment, and for example, Figure 15-18 shows the second embodiment of the application's safety device, wherein, the non-return latch of the first Access Division 52 of alligator clamp 50 for forming by the edge that folds protruding finger.Therefore, necessaryly be that the first Access Division 52 and the first engagement that should be formed them by Access Division 47 will prevent that alligator clamp 50 from being recompressed again by user after triggering.The first Access Division 52 also can be the flange by the edge formation of one of folding protruding finger.In addition, packing ring 80 also might not be circular, and it also can be other shape (referring to Figure 18), the sudden change part 33 that the diameter in the desired just hole of packing ring 80 should still increase less than the diameter of introducing pin 31 greater than the bar section diameter of introducing pin 31.
The 3rd embodiment of the application's safety device has been shown among Figure 19.In this embodiment, stopping means 80 is not packing ring but chain rope, and this chain rope can be made of plastics.Before introducing pin 31 extractions, chain rope 80 is folded in to be introduced between pin needle stand 34 and the pin cover 40, and the one end is connecting introducing pin needle stand 34, and an other end is connecting pin cover 40.After introducing pin 31 extractions, the length of chain rope 80 will limit the needle point of introducing pin 31 and shift out pin cover 40.The pin 31 extractions state afterwards of introducing has been shown among Figure 19.In the 3rd embodiment, owing to having adopted chain rope 80, the sudden change part 33 of introducing on the pin 31 no longer needs.
It is worth mentioning that, the sudden change part 33 of in the first and second embodiment, having used packing ring 80 and having increased, but also can adopt other structure.Such as, stopping means can be an independent spring leaf, and sudden change part 33 is not an augmenting portion but is positioned at the groove of introducing on the pin 31.When the groove of introducing pin 31 moves through described independent spring leaf when extracting introducing pin 31 out, this spring leaf will be stuck in the described groove.In addition, stopping means 80 also may simply be pin cover 40 and extends a hole on the passages 42, the internal diameter in this hole less than the increase sudden change part 33 of introducing pin 31 greater than the bar section diameter of introducing pin.
After introducing pin 31 extractions, pin cover 40 will be held on the distal portions of introducing pin 31, because stopping means 80 such as, packing ring, the chain rope, or independent spring leaf will prevent reliably that the distal portions of introducing pin 31 from shifting out outside the pin cover 40, rotates also with respect to the pin cover or can prevent reliably even introduce pin 31.
As shown in Figure 5, catheter block 24 is provided with a lateral port 26, and 27 of extensions are connected to this lateral port 26, so that liquid (such as medicinal liquid or nutritional solution) is delivered to catheter block 24, or from catheter block 24 output liquids (such as blood).Wherein, extension 27 is to make with polyurethane (Polyurethane) material.In some embodiments, extension 27 is to make with the thermoplastic polyurethane material.In some embodiments, extension 27 is to make with Estane 58277 materials that Lubrizol company produces.
Hereinbefore, as an example the application is described with specific embodiment, but not should be understood to be restriction to the application to these specific embodiments, should be understood that those skilled in the art can change on the basis of specific embodiment.The application's protection domain is limited by the accompanying claims.
Claims (15)
1. a conduit and introduce needle assembly (10) is characterized in that, it comprises:
Conduit tube component (20) has: conduit (21) has far-end and near-end; Catheter block (24) is communicated with described conduit (21) fluid, and this catheter block has near-end and far-end, and the far-end of this catheter block links to each other with the near-end of conduit (21); And extension (27), this extension (27) is connected with the lateral port (26) of described catheter block (24), and wherein, this lateral port is communicated with described catheter block fluid, and this extension is to make with polyurethane material;
Introduce needle assembly (30), have: introduce pin (31), have near-end, far-end and longitudinal axis; Introduce pin needle stand (34), be fixed to the near-end of introducing pin (31), described introducing pin (31) is contained in the conduit (21);
Safety device, comprise: pin cover (40), this pin cover (40) limits and forms longitudinally extending channels (42), and transversely be provided with opening (60) in the longitudinally direction of this longitudinally extending channels (42), the diameter of longitudinally extending channels (42) is a bit larger tham at least the diameter of introducing pin (31) and can passes described longitudinally extending channels (42) in order to introduce pin (31), described pin cover (40) be formed with at least one first by Access Division (47) and at least one second by the Access Division; Alligator clamp (50), be provided with at least one first Access Division (52), at least one second Access Division (55) and catch (53), described alligator clamp (50) is installed in the pin cover (40) by described opening (60), second Access Division (55) of alligator clamp (50) is irreversibly meshed by the Access Division with second of pin cover (40), described alligator clamp (50) be suitable for one introducing in substantially perpendicular to the plane of introducing the pin longitudinal axis pin (31) before extracting out compact model and introduce pin (31) opening between the pattern after extracting out and stretch; And stopping means (80), being used for after introducing pin (31) extraction, the far-end that pin (31) is introduced in restriction shifts out outside the pin cover (40),
Wherein, before introducing pin (31) extraction, described alligator clamp (50) is through the introducing pin (31) that extends passage (42) and is resisted against described compact model, and when extracting the introducing pin out, when introducing pin (31) moves through alligator clamp (50), alligator clamp is discharged by described introducing pin and flicks the described pattern of opening, after introducing the pin extraction, first Access Division (52) of alligator clamp irreversibly mesh pin cover (40) first by Access Division (47), described catch (53) moves to the far-end the place ahead of introducing pin and to prevent from introducing pin back mobile, the first Access Division (52) and first is prevented that by the engagement between Access Division (47) alligator clamp (50) from being recompressed after introducing pin (31) extraction, and the second Access Division (55) and second are prevented that by the engagement between the Access Division alligator clamp (50) is pulled out pin cover (40), and the far-end that pin (31) is introduced in stopping means (80) restriction after introducing pin (31) extraction shifts out outside the pin cover (40).
2. conduit as claimed in claim 1 and introduce needle assembly (10), wherein, described alligator clamp (50) also is provided with at least one the 3rd Access Division (51), when alligator clamp (50) is in when introducing the compact model of pin (31) before extracting out, described the 3rd Access Division (51) on one's own initiative engaging is formed in the 3rd on the catheter block (24) by Access Division (25), and when alligator clamp (50) be in introduce pin after extracting out open pattern the time, described the 3rd Access Division (51) is broken away from engagement with the 3rd by Access Division (25).
3. conduit as claimed in claim 1 or 2 and introduce needle assembly (10), wherein, described alligator clamp (50) is the V-arrangement alligator clamp, the summit of V-arrangement is towards opposite with opening (60), when alligator clamp (50) is in when opening pattern, the two legs that limits V-arrangement straddles on the longitudinal axis of introducing pin (31).
4. conduit as claimed in claim 3 and introduce needle assembly (10), wherein, described alligator clamp (50) limits one of two legs of V-arrangement and is provided with the clamping limb (54) that is parallel to substantially introducing pin (31) longitudinal axis, respectively be formed with a protruding finger at the two ends of this clamping limb (54), described the first Access Division (52) is for being formed at non-return latch on one of described protruding finger, described first by Access Division (47) for being formed at non-return latch or the recess on the pin cover (40).
5. conduit as claimed in claim 4 and introduce needle assembly (10), wherein, described the first Access Division (52) is for being formed at the agnail on one of described protruding finger.
6. conduit as claimed in claim 4 and introduce needle assembly (10), wherein, the flange that described the first Access Division (52) forms for the edge by one of folding described protruding finger.
7. conduit as claimed in claim 3 and introduce needle assembly (10), wherein, described the second Access Division (55) is for being formed at the non-return latch that limits on the other one leg that forms V-arrangement.
8. conduit as claimed in claim 7 and introduce needle assembly (10), wherein, described the second Access Division (55) is for being formed at the non-return latch on the protruding finger (56) that limits on the other one leg free end that forms V-arrangement.
9. conduit as claimed in claim 1 and introduce needle assembly (10), wherein, described stopping means (80) is for being installed in the packing ring on the pin cover (40), this packing ring has a hole, the diameter in this hole greater than the diameter of the bar section that introduces pin (31) less than a diameter-increasing portion (33) of introducing on the pin (31), when introducing the pin extraction, this packing ring will block described diameter-increasing portion (33).
10. as claimed in claim 9 for conduit with introduce needle assembly (10), wherein, described catch (53) comprises a hole, the diameter in this hole greater than the bar section that introduces pin (31) less than the diameter-increasing portion (33) of introducing pin.
11. conduit as claimed in claim 1 and introducing needle assembly (10), wherein, described stopping means (80) can be a hole on the extension passage that is positioned at pin cover (40), the diameter in this hole greater than the bar section that introduces pin less than the diameter-increasing portion of introducing pin.
12. conduit as claimed in claim 1 and introducing needle assembly (10), wherein, described stopping means (80) is a chain rope, and an end of this chain rope connects described needle stand (34), and an other end is connecting described pin cover (40).
13. conduit as claimed in claim 1 and introducing needle assembly (10), wherein, described stopping means (80) is an independent spring leaf, and this independent spring leaf will partly mesh with the annular groove that is positioned on the introducing pin (31) after introducing pin (31) extraction.
14. conduit as claimed in claim 1 and introducing needle assembly, wherein, described polyurethane material is the thermoplastic polyurethane material.
15. conduit as claimed in claim 14 and introducing needle assembly, wherein, described polyurethane material is Estane 58277 materials that Lubrizol company produces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220075144 CN202682467U (en) | 2012-03-02 | 2012-03-02 | Conduit and introducing needle component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220075144 CN202682467U (en) | 2012-03-02 | 2012-03-02 | Conduit and introducing needle component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202682467U true CN202682467U (en) | 2013-01-23 |
Family
ID=47538151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220075144 Expired - Lifetime CN202682467U (en) | 2012-03-02 | 2012-03-02 | Conduit and introducing needle component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202682467U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10500376B2 (en) | 2013-06-07 | 2019-12-10 | Becton, Dickinson And Company | IV catheter having external needle shield and internal blood control septum |
| US10625054B2 (en) | 2014-04-18 | 2020-04-21 | Becton, Dickinson And Company | Needle capture safety interlock for catheter |
| US11511052B2 (en) | 2014-11-10 | 2022-11-29 | Becton, Dickinson And Company | Safety IV catheter with V-clip interlock and needle tip capture |
-
2012
- 2012-03-02 CN CN 201220075144 patent/CN202682467U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10500376B2 (en) | 2013-06-07 | 2019-12-10 | Becton, Dickinson And Company | IV catheter having external needle shield and internal blood control septum |
| US11534581B2 (en) | 2013-06-07 | 2022-12-27 | Becton, Dickinson And Company | Ported IV catheter having external needle shield and internal blood control septum |
| US10625054B2 (en) | 2014-04-18 | 2020-04-21 | Becton, Dickinson And Company | Needle capture safety interlock for catheter |
| US10729890B2 (en) | 2014-04-18 | 2020-08-04 | Becton, Dickinson And Company | Multi-use blood control safety catheter assembly |
| US10780249B2 (en) | 2014-04-18 | 2020-09-22 | Becton, Dickinson And Company | Needle capture safety interlock for catheter |
| US10799682B2 (en) | 2014-04-18 | 2020-10-13 | Becton, Dickinson And Company | Needle capture safety interlock for catheter |
| US10960186B2 (en) | 2014-04-18 | 2021-03-30 | Becton, Dickinson And Company | Multi-use blood control safety catheter assembly |
| US11504505B2 (en) | 2014-04-18 | 2022-11-22 | Becton, Dickinson And Company | Needle capture safety interlock for catheter |
| US11565088B2 (en) | 2014-04-18 | 2023-01-31 | Becton, Dickinson And Company | Multi-use blood control safety catheter assembly |
| US11607530B2 (en) | 2014-04-18 | 2023-03-21 | Becton, Dickinson And Company | Needle capture safety interlock for catheter |
| US11931532B2 (en) | 2014-04-18 | 2024-03-19 | Becton, Dickinson And Company | Multi-use blood control safety catheter assembly |
| US11511052B2 (en) | 2014-11-10 | 2022-11-29 | Becton, Dickinson And Company | Safety IV catheter with V-clip interlock and needle tip capture |
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