CN202605411U - Medical needle-free positive pressure joint - Google Patents
Medical needle-free positive pressure joint Download PDFInfo
- Publication number
- CN202605411U CN202605411U CN 201220151991 CN201220151991U CN202605411U CN 202605411 U CN202605411 U CN 202605411U CN 201220151991 CN201220151991 CN 201220151991 CN 201220151991 U CN201220151991 U CN 201220151991U CN 202605411 U CN202605411 U CN 202605411U
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- China
- Prior art keywords
- valve seat
- spool
- ring seal
- joint
- positive pressure
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 238000001802 infusion Methods 0.000 claims abstract description 18
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 27
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 4
- 238000001746 injection moulding Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
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- 239000008280 blood Substances 0.000 description 5
- 210000004369 blood Anatomy 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000003146 anticoagulant agent Substances 0.000 description 3
- 229940127219 anticoagulant drug Drugs 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 208000007536 Thrombosis Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 206010011409 Cross infection Diseases 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- 206010038743 Restlessness Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 208000003443 Unconsciousness Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000004531 microgranule Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- 238000009827 uniform distribution Methods 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a device that leads a medium in a body, in particular to a medical needle-free positive pressure joint suitable for an extracorporeal indwelling catheter. The medical needle-free positive pressure joint is structurally characterized in that the medical needle-free positive pressure joint comprises a joint base and a positive pressure non-return valve; a first connector is arranged at the lower part of the joint base; a flow guide channel is arranged at the middle part of an inner chamber of the connector; a tubular casing is arranged at the upper part of the joint base, and the inner part of the joint base is a column-shaped cavity; the cavity is communicated with the flow guide channel; and the positive pressure non-return valve comprises a valve seat, a valve core, a first ring-shaped seal ring, a second ring-shaped seal ring, an offset spring, a third ring-shaped seal ring and a support bottom cover. The medical needle-free positive pressure joint has the advantages as follows: three ring-shaped seal rings are arranged on an infusion passage, the leak tightness of the whole infusion process is ensured, liquid leakage can be avoided, the sealing effect can also be achieved at the same time during the needle withdrawing process, positive pressure generation can be ensured, and the using effect of the needle-free positive pressure joint can be exerted fully; in addition, the integral structure is simple, the medical needle-free positive pressure joint is convenient to operate, components are easy to install and perform injection molding, and the cost is low.
Description
Technical field
This utility model relates to a kind ofly introduces intravital device with medium, particularly a kind of medical Needleless barotropic joint that is applicable to external inlying catheter.
Background technology
In clinical treatment, when needs of patients is repeatedly infused, can use external inlying catheter usually, the mode of connecing of refuting that human body is kept somewhere apparatus and transfusion device outward is divided into and has pin and needleless to refute to connect.There is pin to refute the for example traditional calparine cap of the mode of connecing in infusion process, particularly mostly is unconsciousness, restless, uncooperative, transfusion device very easily occurs and keep somewhere the apparatus disengaging, causing transfusion to leak the neurosurgery patient; Also have the infant patient because painful uneasy agitation and the limb activity amplitude is big causes transfusion device to come off more easily, thus the influence transfusion; Invisiblely like this medical personnel's workload and psychological burden have been increased.
Needle adapter is arranged when transfusion, the transfusion device needle tubing need pass no needle adapter top cement plug, might the colloid microgranule brought into transfusion system and hurt patient; Greatest problem is to have the needle adapter transfusion to finish to extract the transfusion device needle tubing; In inlying catheter, can not produce malleation; Only can form negative pressure; Blood will blow back into and keep somewhere in the apparatus conduit like this, might solidify to form thrombosis and cause the injury to patient, thereby must in time carry out the operation of washing pipe tube sealing with tube-sealing solution.And tube sealing operation is to use the band syringe to pass the calparine cap plug to inject tube-sealing solution; Tube sealing finishes to extract needle tubing, can in inlying catheter, produce negative pressure equally, and blood solidifies the formation thrombosis in inlying catheter in order to prevent to flow backwards; Even cause plugging; Can't infuse once more and reduce and keep somewhere the apparatus number of times of infusing once more, adopt usually and toward inlying catheter in, inject the anticoagulant tube sealing, and to there being anticoagulant allergy patient to damage; Thereby to there being the irritated patient of anticoagulant to use the normal saline tube sealing instead; So just shorten the tube-sealing solution tube sealing time limit greatly, inlying catheter medical personnel during keeping somewhere need repeatedly carry out the operation of washing pipe tube sealing, have increased medical personnel's workload greatly; Having pin connected mode medical personnel and patient that needle tubing also can take place sometimes stabs accident and causes cross infection.
So just there has been present malleation not have needle adapter, locking medicated cap is refuted and screwed on to the needleless overlapping joint of transfusion device in case insert no needle adapter, transfusion device in infusion process, can not occur and keep somewhere apparatus breaking away from, and reliable the completion infused.Along with the needleless transfusion device is used more and more general; No needle adapter of a great variety has also just appearred; They are made up of the Flexible Reset assembly of band internal screw thread 6% Rule male contact, band external screw teeth joint pedestal and a plurality of silica gel or metal or plastic material basically, like the disclosed Needleless seal transfusion joint of Chinese patent CN1899633.The fine various drawbacks of needle adapter that solved of this no needle adapter, but these joint seals are poor, occur the phenomenon of leakage often, and also price is too high, but is kind of a burden to sufferer.
The utility model content
The purpose of this utility model is to overcome the weak point of prior art and a kind of good airproof performance is provided, and is simple in structure, easy to operate, the medical Needleless barotropic joint that cost is low.
The purpose of this utility model realizes through following approach:
Medical Needleless barotropic joint, its structural feature are, include joint pedestal and malleation check valve; Joint pedestal below has first interface, has a flow-guiding channel in the middle of the interface inner chamber, and the top of joint pedestal is a tubular shell; Interior is cylindrical cavity, and this cavity is communicated with flow-guiding channel;
The malleation check valve includes valve seat, spool, first O-ring seal, second O-ring seal, back-moving spring, the 3rd O-ring seal and supports bottom; Valve seat is a kind of jatharapanvartanasana housing of hollow cavity; Housing is placed the annular shoulder that has perpendicular to surface of shell outward; Opened plurality of through holes on the valve seat sidewall of annular shoulder below; Spool is installed on the top position of valve base cavity, and spool is passed through first O-ring seal and second O-ring seal respectively and realized airtight with valve base cavity by its upper end and bottom; Opened a hole slot on the spool lower surface; One end of back-moving spring is installed in this hole slot; The other end is supported on support base and covers; Support bottom and be installed on the valve base cavity bottom, be based on and be nested with the 3rd O-ring seal on the circumferential annular groove that supports bottom and realize supporting bottom and cooperate with the airtight of valve seat;
The annular shoulder of valve seat is installed in the tubular shell inner chamber of joint pedestal with the lower part; Annular shoulder has sealed the opening of tubular shell; Be fixedly connected with the opening upper edge of tubular shell; Form the gap cavity between the jatharapanvartanasana housing of valve seat and support bottom and this tubular shell inner chamber, valve base cavity is communicated with this gap cavity through the through hole of annular shoulder below.
During use, first interface of joint pedestal connects inlying catheter, and flow-guiding channel is communicated with this inlying catheter.The needleless overlapping joint of transfusion device heads on spool and pushes downwards; Back-moving spring is compressed; Be communicated with valve base cavity up to this needleless overlapping joint; Transfusion this moment can get into inlying catheter via the infusion channel that the gap cavity between the through hole on the valve seat, valve seat and the joint pedestal, flow-guiding channel are formed, and realizes the needleless transfusion.When withdrawing transfusion device, transfusion device needleless overlapping joint is withdrawn moment, owing to go back full of liquid on the infusion channel; So extraneous can produce malleation to the liquid in the positive pressure connector, promote liquid automatically and get into inlying catheter, prevent that blood from getting back in the inlying catheter; Simultaneously, back-moving spring has promoted the spool homing, under the effect of first O-ring seal, second O-ring seal and the 3rd O-ring seal; Thoroughly sealed infusion channel, avoided the blood backflow, solidified and stop up conduit.
The advantage of this utility model is; On infusion channel, externally be provided with three road O-ring seals; Guarantee the sealing of whole infusion process, avoided leakage, also realized the sealing effectiveness in removing the pin process simultaneously; Guarantee the generation of malleation, given full play to the result of use of Needleless barotropic joint.Overall structure is simple, and is easy to operate, and parts are easy to injection moulding, installation, and cost is low.
This utility model can further be specially:
The upper end of spool outer peripheral face and bottom have cannelure respectively, and first O-ring seal is inlaid in the cannelure of spool upper end for the circle sealing ring, and second O-ring seal is a rectangular seal, is inlaid in the cannelure of spool bottom.
Above-mentioned spool is that a kind of hard material is processed, and can also be:
Spool is that a kind of soft elastic material is processed, and first O-ring seal and second O-ring seal are respectively the annular lip that this spool is positioned at upper end and bottom.
Like this, through two sealing rings respectively with the press fit of valve base cavity, guaranteed sealing, first O-ring seal is airtight valve seat access road, second O-ring seal is airtight its downward passage.
The jatharapanvartanasana housing of valve seat is divided into top tube chamber and bottom tube chamber; The top lumen diameter has the taper seat transition less than the bottom lumen diameter between the tube chamber of upper and lower part, annular shoulder is positioned at the lower end of top tube chamber; Spool is divided into upper end and bottom; The upper end is arranged in the top tube chamber of valve seat, and lower end part is in the tube chamber of the bottom of valve seat, and the diameter of upper end and bottom cooperates with corresponding valve seat lumen diameter respectively.
Like this, spool just is limited to be positioned in the valve base cavity by the interaction of this taper seat and back-moving spring, because its upper end and bottom have first O-ring seal and second O-ring seal respectively, therefore also guarantees the sealing effectiveness that it is realized in valve seat.In addition after spool is urged into, the periphery of its upper end also can and valve seat between form closed cavity, the outflow of being convenient to infuse.
The top tube chamber of valve seat has external screw thread as second interface on it, can be connected with infusion connector.
Like this can the fixed positive pressure joint with the transfusion interface between being connected.
The top of spool is provided with four runner mouths, forms cross slope shape slit aperture by four elastic tongue pieces.
Such purpose is when promoting spool downwards, makes the liquid outlet (through hole) on transfusion device joint and runner mouth and the valve seat form a fluid passage, supplies transfusion to get into.
Support base covers has cylindric blind hole; The other end of back-moving spring is installed in this blind hole, and the periphery that supports bottom is step-like, has annular groove on the periphery of topping bar; The valve seat of correspondence position is inboard along having annular protrusion, and this annular protrusion is nested in the annular groove that supports the bottom periphery; The 3rd O-ring seal is being got out of a predicament or an embarrassing situation between upper edge and the valve seat.
Like this, support bottom and just can be fixedly mounted on the valve seat bottom, the 3rd O-ring seal receives the end face extruding of supporting between bottom and the valve seat; Thereby assurance sealing; Prevent that joint pedestal inner chamber liquid from infiltrating valve base cavity, cause seal failure, can't produce malleation.
First interface on the joint pedestal is a kind of female thread structure, and the tubular shell periphery of joint pedestal is evenly distributed with concave arc rib in the complex root.
Female thread structure is convenient to the joint pedestal and is connected with inlying catheter, and the rib of tubular shell peripheral distribution is convenient to medical personnel and is affectedly bashful operation.
In sum, this utility model provides a kind of medical Needleless barotropic joint, is provided with joint pedestal and malleation check valve; On infusion channel, externally be provided with three road O-ring seals; Guarantee the sealing of whole infusion process, avoided leakage, also realized the sealing effectiveness in removing the pin process simultaneously; Guarantee the generation of malleation, given full play to the result of use of Needleless barotropic joint.Overall structure is simple, and is easy to operate, and parts are easy to injection moulding, installation, and cost is low.
Description of drawings
Shown in Figure 1 is the structural representation of the said medical Needleless barotropic joint of this utility model.
Shown in Figure 2 is the contour structures sketch map of said medical Needleless barotropic joint.
Shown in Figure 3 is the vertical view of Fig. 1.
Shown in Figure 4 is medical Needleless barotropic joint work structure of process sketch map when inserting the transfusion device overlapping joint;
The structural representation of the Needleless barotropic joint when being soft materials shown in Figure 5 for the malleation check valve.
Below in conjunction with embodiment this utility model is done and to be further described
The specific embodiment
Most preferred embodiment
With reference to accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3, be used for the positive pressure connector of needleless transfusion in the present embodiment, both states after the infusion connector of connection being arranged and being connected infusion connector, the state of the spool 1.2 when not connecting infusion connector is called original position.Shown in accompanying drawing 1, medical Needleless barotropic joint comprises the joint pedestal 2 of inner hollow, with its in the upper end the affixed malleation check valve 1 of end face.
Shown in accompanying drawing 1: malleation check valve 1 is by valve seat 1.1, spool 1.2, first O-ring seal 1.3, second O-ring seal 1.4, back-moving spring 1.5, the 3rd O-ring seal 1.6 and support bottom 1.7 and form.
Valve seat 1.1 is a kind of jatharapanvartanasana housing of hollow cavity; Be divided into top tube chamber 1.1.1 and bottom tube chamber 1.1.2, upper tube intracavity diameter has the taper seat transition less than lower tube intracavity diameter between the two; Has annular shoulder 1.1.3 on the upper end edge periphery of top tube chamber lower end edge, bottom tube chamber perpendicular to surface of shell; Top tube chamber 1.1.1 has external screw thread, so that spin with the transfusion device joint, annular shoulder 1.1.3 is used for and tubular shell 2.1 upper end edges of joint pedestal 2 affixed (the employing heat seal is affixed); Annular shoulder 1.1.3 below be provided with two axis normal in the through hole of valve seat axis as liquid outlet 1.1.4, communicate with joint pedestal 2 tube chambers.
Spool 1.2 can adopt medical hard material, also can adopt the medical flexible material.
When adopting hard material, as shown in Figure 1, spool 1.2 is divided into upper end 1.2.1 and bottom 1.2.2; Upper end 1.2.1 is arranged in the top tube chamber of valve seat 1.1; Bottom 1.2.2 is arranged in the bottom tube chamber of valve seat 1.1, and the diameter of upper end and bottom cooperates with corresponding valve seat lumen diameter respectively, seamlessly transits by taper seat between the two; So that spool 1.2 in position the time and valve seat 1.1 internal conical surfaces under action of reset spring, closely cooperate, also play certain sealing function.Spool upper and lower end portion is provided with the O-ring seal mounting groove respectively, and first O-ring seal 1.3 is inlaid in the cannelure of spool 1.2 upper ends for the circle sealing ring, and second O-ring seal 1.4 is a rectangular seal, is inlaid in the cannelure of spool 1.2 bottoms.Have cylindric hole slot 1.2.3 on the lower surface of spool 1.2, an end of back-moving spring 1.5 is installed in this hole slot; Spool 1.2 upper surfaces are provided with four runner mouth 1.2.4, and are as shown in Figure 3, and purpose is to guarantee to promote spool 1.2 downwards, make the liquid outlet of transfusion device joint and runner mouth and valve seat 1.1 form a fluid passage, get into for liquid; The spool 1.2 that is embedded with sealing ring can slide in the tube chamber of valve seat 1.1; Sealing ring 1.3,1.4 respectively with the press fit of tube chamber up and down of valve seat 1.1, guaranteed sealing, closed cavity 1.1.5 the sliding up and down that constitutes by sealing ring 1.3,1.4 and valve base inner wall through spool; But cavity volume size variation; Closed cavity communicates with joint pedestal inner chamber through the valve seat upper liquid outlet, first O-ring seal 1.3 is airtight access road, and second O-ring seal 1.4 is airtight to lower channel.
When adopting flexible material; Spool 1.2 need not to be provided with in addition sealing ring; First O-ring seal and second O-ring seal are respectively the annular lip that this spool is positioned at upper end and bottom; Itself just has sealing function, and is consistent, as shown in Figure 5 with valve seat formation closed cavity function and above-mentioned hard spool.
Support and have cylindric blind hole on the bottom 1.7 so that back-moving spring 1.5 is installed; The periphery that supports bottom 1.7 is step-like; Has annular groove on the periphery of topping bar; The valve seat 1.1 of correspondence position is inboard along having annular protrusion 1.1.6, and this annular protrusion 1.1.6 is nested in the annular groove that supports bottom 1.7 peripheries, so that the firm snapping of the two.The 3rd O-ring seal 1.7 is flat-shaped sealing ring, and it is being got out of a predicament or an embarrassing situation between upper edge and the valve seat, receives the end face extruding of valve seat bottom and valve seat, thereby guarantees sealing, prevents that joint pedestal inner chamber liquid from infiltrating valve base cavity.
Back-moving spring 1.5 is cylindric compression spring; The employing medical stainless steel is processed, and is arranged in valve seat 1.1 inner chambers, is the pretension state; One end is installed among the cylindric hole slot 1.2.3 of spool 1.2; One end is installed in the annular groove of support bottom 1.7 of valve seat 1.1 bottoms, to guarantee the 3rd O-ring seal 1.6 and the tight pressing of valve seat 1.1 tube chamber taper seats, keeps seal.
Needleless barotropic joint such as Fig. 1 in the present embodiment because positive pressure connector has certain internal cavity, need before using with being connected on the inlying catheter behind the air in the normal saline discharge positive pressure connector.
As shown in Figure 3; When transfusion device joint 3 inserts in the valve seat 1.1 from the positive pressure connector upper end; Prop up spool 1.2 upper surfaces, promote spool and be moved down into shown position, back-moving spring 1.5 receives the spool compressing and compresses; The complete closed cavity 1.1.7 that constitutes by sealing ring 1.4,1.7, spool and a valve seat lower end tube chamber ancient piece of jade, round, flat and with a hole in its centre simultaneously, air also is compressed in it; Because first O-ring seal 1.3 of spool top slips into valve seat 1.1 lower end tube chambers; Tube chamber on the seal valve seat 1.2 no longer; Spool upper surface four runner mouths and valve seat upper liquid outlet form a fluid passage; Form a cavity of receiving fluids between the inwall of the outer wall of valve seat 1.1 and joint pedestal; This moment, the infusion channel of forming via the gap cavity 1.1.7 between the through hole 1.1.4 on the valve seat, valve seat and the joint pedestal, flow-guiding channel 2.4 that flows of liquid got into inlying catheter; Be that liquid passes through infusion channel and gets into medical apparatus and instruments such as inlying catheter, the cavity that is made up of spool 1.2, second O-ring seal 1.4 and valve seat 1.1 internal chamber walls simultaneously is full of liquid also, and flow direction is seen among the figure shown in the arrow.
When pulling down the transfusion device joint; Spool 1.2 moves up rapidly under back-moving spring 1.5 and compressed-air actuated promotion and resets; Get back to position as shown in Figure 1, in this process, the cavity that is made up of spool 1.2, first and second O-ring seals 1.3,1.4 and valve base cavity wall reduces gradually; Until original position; Because the existence of sealing ring 1.3,1.4,1.6 makes that all sealings between valve seat and the spool 1.2 are so the liquid that valve base cavity held can only be through the inner chamber outflow entering inlying catheter of liquid outlet and joint pedestal between the inner chamber and valve seat 1 of joint pedestal; Promptly reached the purpose that produces malleation, avoided extracting the transfusion device joint blood is refluxed and the problem of obstruction conduit.
It is identical with prior art that the present invention does not state part.
Claims (7)
1. medical Needleless barotropic joint is characterized in that, includes joint pedestal and malleation check valve; Joint pedestal below has first interface, has a flow-guiding channel in the middle of the interface inner chamber, and the top of joint pedestal is a tubular shell; Interior is cylindrical cavity, and this cavity is communicated with flow-guiding channel; The malleation check valve includes valve seat, spool, first O-ring seal, second O-ring seal, back-moving spring, the 3rd O-ring seal and supports bottom; Valve seat is a kind of jatharapanvartanasana housing of hollow cavity; Housing is placed the annular shoulder that has perpendicular to surface of shell outward; Opened plurality of through holes on the valve seat sidewall of annular shoulder below; Spool is installed on the top position of valve base cavity, and spool is passed through first O-ring seal and second O-ring seal respectively and realized airtight with valve base cavity by its upper end and bottom; Opened a hole slot on the spool lower surface; One end of back-moving spring is installed in this hole slot; The other end is supported on support base and covers; Support bottom and be installed on the valve base cavity bottom, be based on and be nested with the 3rd O-ring seal on the circumferential annular groove that supports bottom and realize supporting bottom and cooperate with the airtight of valve seat; The annular shoulder of valve seat is installed in the tubular shell inner chamber of joint pedestal with the lower part; Annular shoulder has sealed the opening of tubular shell; Be fixedly connected with the opening upper edge of tubular shell; Form the gap cavity between the jatharapanvartanasana housing of valve seat and support bottom and this tubular shell inner chamber, valve base cavity is communicated with this gap cavity through the through hole of annular shoulder below.
2. medical Needleless barotropic joint according to claim 1; It is characterized in that; The upper end of spool outer peripheral face and bottom have cannelure respectively, and first O-ring seal is inlaid in the cannelure of spool upper end for the circle sealing ring; Second O-ring seal is a rectangular seal, is inlaid in the cannelure of spool bottom.
3. medical Needleless barotropic joint according to claim 1 is characterized in that, spool is that a kind of soft elastic material is processed, and first O-ring seal and second O-ring seal are respectively the annular lip that this spool is positioned at upper end and bottom.
4. medical Needleless barotropic joint according to claim 1; It is characterized in that the jatharapanvartanasana housing of valve seat is divided into top tube chamber and bottom tube chamber, the top lumen diameter is less than the bottom lumen diameter; Has the taper seat transition between the tube chamber of upper and lower part; Annular shoulder is positioned at the lower end of top tube chamber, and spool is divided into upper end and bottom, and the upper end is arranged in the top tube chamber of valve seat; Lower end part is in the tube chamber of the bottom of valve seat, and the diameter of upper end and bottom cooperates with corresponding valve seat lumen diameter respectively.
5. medical Needleless barotropic joint according to claim 1 is characterized in that the top tube chamber of valve seat has external screw thread as second interface on it, can be connected with infusion connector.
6. medical Needleless barotropic joint according to claim 1 is characterized in that the top of spool is provided with four runner mouths, forms cross slope shape slit aperture by four elastic tongue pieces.
7. medical Needleless barotropic joint according to claim 1; It is characterized in that support base covers has cylindric blind hole, the other end of back-moving spring is installed in this blind hole; The periphery that supports bottom is step-like; Have annular groove on the periphery of topping bar, the valve seat of correspondence position is inboard along having annular protrusion, and this annular protrusion is nested in the annular groove that supports the bottom periphery; The 3rd O-ring seal is being got out of a predicament or an embarrassing situation between upper edge and the valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220151991 CN202605411U (en) | 2012-04-12 | 2012-04-12 | Medical needle-free positive pressure joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220151991 CN202605411U (en) | 2012-04-12 | 2012-04-12 | Medical needle-free positive pressure joint |
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| Publication Number | Publication Date |
|---|---|
| CN202605411U true CN202605411U (en) | 2012-12-19 |
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|---|---|---|---|
| CN 201220151991 Expired - Lifetime CN202605411U (en) | 2012-04-12 | 2012-04-12 | Medical needle-free positive pressure joint |
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| WO2014161410A1 (en) * | 2013-04-01 | 2014-10-09 | 江苏磐宇科技有限公司 | Needleless positive pressure connector |
| CN104107500A (en) * | 2014-07-29 | 2014-10-22 | 江苏康诺医疗器械有限公司 | Sterile super-lubricity antiseep safety catheter structure |
| WO2014183272A1 (en) * | 2013-05-15 | 2014-11-20 | 福建省百仕韦医用高分子股份有限公司 | Medical infusion connector connected to extracorporal indwelling catheter and having stop valve |
| CN104307055A (en) * | 2014-10-11 | 2015-01-28 | 江苏康诺医疗器械有限公司 | Medical drainage device matched with portable urinary catheterization bag |
| WO2015017961A1 (en) * | 2013-08-03 | 2015-02-12 | Zhang Jianming | Medical infusion joint having cut-off valve |
| CN105407942A (en) * | 2013-08-03 | 2016-03-16 | 张建铭 | Annular groove-positioned in vitro infusion catheter stagnation switch |
| CN105641804A (en) * | 2016-04-08 | 2016-06-08 | 黄敬远 | Medical one-way valve |
| CN107469191A (en) * | 2017-09-26 | 2017-12-15 | 湖北楚天药业有限责任公司 | A kind of anti-venous indwelling needle |
| CN108619591A (en) * | 2018-05-31 | 2018-10-09 | 郑州迪奥医学技术有限公司 | Zero-pressure connector |
| CN108815627A (en) * | 2018-08-10 | 2018-11-16 | 杭州光启医疗科技发展有限公司 | The infusion apparatus of anti-return blood |
| CN110384858A (en) * | 2018-04-18 | 2019-10-29 | 蔡溪进 | The infusion closing type joint for preventing medical fluid or body fluid from leaking outside |
| CN112245706A (en) * | 2020-11-05 | 2021-01-22 | 陕西智宇寰宸医疗器械有限公司 | Infusion joint |
| CN113041147A (en) * | 2021-02-05 | 2021-06-29 | 安徽宏宇五洲医疗器械股份有限公司 | Push type needleless medicine adding device |
| CN113134310A (en) * | 2021-05-21 | 2021-07-20 | 长沙矿山研究院有限责任公司 | Static mixer suitable for flowing water slip casting |
| US11235135B2 (en) | 2018-03-19 | 2022-02-01 | Hsi-Chin Tsai | Body-fluid-and-medication leak-proof and closed medical connector |
| CN114699599A (en) * | 2014-12-01 | 2022-07-05 | 河南曙光健士实业发展有限公司 | Remaining needle with slow-release positive pressure device |
| KR20220170680A (en) * | 2021-06-23 | 2022-12-30 | 박선경 | Check valve for needleless injector |
-
2012
- 2012-04-12 CN CN 201220151991 patent/CN202605411U/en not_active Expired - Lifetime
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| CN114699599A (en) * | 2014-12-01 | 2022-07-05 | 河南曙光健士实业发展有限公司 | Remaining needle with slow-release positive pressure device |
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| US11865293B2 (en) | 2018-03-19 | 2024-01-09 | Hsi-Chin Tsai | Body-fluid-and-medication leak-proof and closed medical connector |
| US11235135B2 (en) | 2018-03-19 | 2022-02-01 | Hsi-Chin Tsai | Body-fluid-and-medication leak-proof and closed medical connector |
| CN110384858A (en) * | 2018-04-18 | 2019-10-29 | 蔡溪进 | The infusion closing type joint for preventing medical fluid or body fluid from leaking outside |
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| CN108619591A (en) * | 2018-05-31 | 2018-10-09 | 郑州迪奥医学技术有限公司 | Zero-pressure connector |
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| CN112245706B (en) * | 2020-11-05 | 2021-06-25 | 陕西智宇寰宸医疗器械有限公司 | Infusion joint |
| CN113041147A (en) * | 2021-02-05 | 2021-06-29 | 安徽宏宇五洲医疗器械股份有限公司 | Push type needleless medicine adding device |
| CN113134310A (en) * | 2021-05-21 | 2021-07-20 | 长沙矿山研究院有限责任公司 | Static mixer suitable for flowing water slip casting |
| KR102599493B1 (en) | 2021-06-23 | 2023-11-06 | 박선경 | Check valve for needleless injector |
| KR20220170680A (en) * | 2021-06-23 | 2022-12-30 | 박선경 | Check valve for needleless injector |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
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Granted publication date: 20121219 |