CN208610945U - A kind of no pressure high-safety needle staying on vein - Google Patents

Abstract

The utility model provides a kind of no pressure high-safety needle staying on vein, including round pie needle stand mechanism and transfusion joint mechanism, application is bonded on round pie needle stand mechanism and the transfusion joint mechanism, round pie needle stand mechanism includes piercing assembly and indwelling needle assembly, safety device is equipped between the piercing assembly and the indwelling needle assembly, the transfusion joint mechanism includes connector and the pedestal that is installed under the connector, the upper end of the connector is provided with injection access aperture, round pie needle stand mechanism connects the transfusion joint mechanism by a long duct, current limliting folder is folded on the long duct.The utility model structure is simple, it can effectively bind on patient skin, has the advantages that no pressure pressure mark-proof, and it can terminate in venipuncture, while extracting piercing needle out, by piercing needle shielding in safety device, it can directly cooperate needleless injector, transfusion time is greatly reduced, while effectively reducing related blood stream infections.

Description

A kind of no pressure high-safety needle staying on vein

Technical field

The utility model relates to the field of medical instrument technology more particularly to a kind of no pressure high-safety needle staying on vein.

Background technique

The patient of infant, cancer and various skin problems, skin are very fragile for normal patient.It is quiet Vein piercing portions adjacent joints position, is influenced, hub portion is easy to appear by factors such as limb motion and external forces It is not fixed firmly phenomenon, patient activity, which is spent, can lead to greatly that needle stand pierces through blood vessel or needle stand falls off.Needle stand falls off in order to prevent, now It is often used medical adhesive tape to be fixed, tension is big, and patient will appear skin and itch and the problems such as skin damage, and using medical Adhesive tape is fixed on the skin by needle stand, there are problems that needle stand pressure patient skin, leads to the discomfort of patient.And often at one Place is injected intravenously, and blood vessel can be damaged, and finally stimulates vascular pain, flat, even blackening.Therefore, it is really necessary to set A kind of no pressure high-safety needle staying on vein is counted, the defect of the prior art is solved.

Utility model content

In order to solve the above-mentioned technical problem, the utility model provides a kind of no pressure high-safety needle staying on vein, Neng Gouyou Effect bonding has the advantages that no pressure pressure mark-proof, can directly cooperate needleless injector, be greatly reduced defeated on patient skin The liquid time, while effectively reducing related blood stream infections.

The utility model provides following technical scheme, a kind of no pressure high-safety needle staying on vein, including round pie needle stand machine It is bonded with application on structure and transfusion joint mechanism, round pie needle stand mechanism and the transfusion joint mechanism, it is described Round pie needle stand mechanism includes piercing assembly and indwelling needle assembly, before the piercing assembly includes needle tubing seat and is fixed on needle tubing seat Piercing needle on end, the indwelling needle assembly include catheter block and inlying catheter；The piercing assembly and the remaining needle group Safety device is equipped between part.

The transfusion joint mechanism includes connector and the pedestal that is installed under the connector, and the upper end of the connector is provided with Access aperture is injected, the connector is provided centrally with infusion tube, and the infusion tube is coated with rubber tube, the rubber tube portion It is placed in the injection access aperture, so that the infusion tube is isolated from the outside world；The core of the pedestal forms centre bore, One end of the infusion tube extends in the centre bore.

The side of the pedestal offers a connection through-hole, and the branch port of the catheter block passes through institute by a long duct The tail end that connection through-hole connects the infusion tube is stated, realizes the company of round pie needle stand mechanism and the transfusion joint mechanism It connects, current limliting folder is folded on the long duct.

Further, the safety device includes collet and elastic safety intermediate plate, is equipped in the collet and supplies the puncture The axial passage that syringe needle passes through, the elastic safety intermediate plate upper and lower ends are equipped with logical with the piercing needle clearance fit Hole, the elastic safety intermediate plate are arranged in the collet.

Preferably, the tube wall of the piercing needle is equipped with the casting lug thereon greater than through-hole, the casting lug thereon is apart from needle point Distance is less than the distance between the through-hole in the elastic safety intermediate plate upper and lower ends, and elastic safety intermediate plate upper end is described Piercing needle passes through flexible deformation under through-hole state thereon, exits elastic safety intermediate plate upper end in the piercing needle Under through-hole state, the axial passage is deviateed in flexible deformation effect lower through-hole in elastic safety intermediate plate upper end.

Preferably, being provided with external screw thread, fixture block or the card of connection needleless injector in the outer rim of the injection access aperture Slot.

Further, the upper end wall thickness and central stitched open of the rubber tube, the lower edge of the rubber tube are thickened in ring Shape cuff, the rubber tube and the infusion tube are fitted close.

Preferably, the inner wall of the rubber tube is provided with four paws elastic piece, the rubber tube and the four paws elastic piece Rabbet in the annular groove of the infusion tube outer rim one end.

Further, the current limliting folder includes symmetrically arranged convex platform and lower convex platform, is additionally provided with phase on the current limliting folder The fixture block and card slot mutually cooperated.

Preferably, the side of the application offers sector notch.

The utility model has the following beneficial effects: being bonded on round pie needle stand mechanism and the transfusion joint mechanism There is application, can effectively bind on patient skin, and round pie needle stand mechanism does not press to patient skin, does not also make At impression, the comfort level of infusion process is further improved；Directly by round pie needle stand mechanism and the transfusion connector Mechanism is connected, and is not necessarily to secondary puncture, for patients such as old age, the children to work poor, promotes patient satisfaction, it is positive to increase treatment Property；The transfusion joint mechanism can directly cooperate needleless injector, transfusion time be greatly reduced, while effectively reducing phase Closing property bloodstream infection；It is provided with the safety device in round pie needle stand mechanism, to prevent the artificial conclusion of the business of needlestick injuries Fork infection reduces medical staff's needle and stabs probability, plays the role of safeguard protection and very easy to use.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of no pressure high-safety needle staying on vein described in the utility model；

Fig. 2 is the structural schematic diagram of transfusion joint mechanism described in the utility model；

Fig. 3 is that round pie needle stand described in the utility model mechanism uses preceding schematic diagram of internal structure；

Fig. 4 is that round pie needle stand described in the utility model mechanism uses rear schematic diagram of internal structure；

Fig. 5 is the utility model attached drawing 4B partial enlarged view；

Fig. 6 is the structural schematic diagram of current limliting described in the utility model folder.

Description of symbols:

Round pie needle stand mechanism 10, piercing assembly 11, needle tubing seat 111, piercing needle 112, casting lug thereon 113, remaining needle group Part 12, catheter block 121, inlying catheter 122, branch port 123, safety device 13, collet 131, elastic safety intermediate plate 132.

Transfusion joint mechanism 20, connector 21 inject access aperture 211, infusion tube 212, rubber tube 213, four paws elastic piece 214, annular groove 215, pedestal 22, centre bore 221, connection through-hole 222.

Application 30, sector notch 301, long duct 31, current limliting folder 32, convex platform 321, lower convex platform 322, fixture block 323, card slot 324。

Specific embodiment

In order to make the purpose of utility model of the utility model, technical solution and technical effect are more clearly understood, tie below Specific embodiment is closed to be described further the utility model.It should be understood that specific embodiment described herein, be only used for It explains the utility model, is not used to limit the utility model.

Referring to Fig.1, a kind of no pressure high-safety needle staying on vein, including round pie needle stand mechanism 10 and transfusion joint mechanism 20, application 30, the round pie needle stand are bonded in round pie needle stand mechanism 10 and the transfusion joint mechanism 20 Mechanism 10 includes piercing assembly 11 and indwelling needle assembly 12, and the piercing assembly 11 includes needle tubing seat 111 and is fixed on needle tubing seat Piercing needle 112 on 111 front ends, the indwelling needle assembly 12 include catheter block 121 and inlying catheter 122；The puncture group Safety device 13 is equipped between part 11 and the indwelling needle assembly 12.The needle stand mechanism 10 is designed to round pie structure, not right Patient skin pressure, does not also cause impression, further improves the comfort level of infusion process；The catheter block 121 and institute simultaneously Stating inlying catheter 122 is plastic type material, can carry out radian adjusting according to skin.

Referring to Fig. 2, the transfusion joint mechanism 20 includes connector 21 and the pedestal 22 being installed under the connector 21, described The upper end of connector 21 is provided with injection access aperture 211, and the connector 21 is provided centrally with infusion tube 212, the infusion tube 212 It is coated with rubber tube 213,213 part of rubber tube is placed in 211 in the injection access aperture, thus by the infusion tube 212 are isolated from the outside world；The core of the pedestal 22 forms centre bore 221, and one end of the infusion tube 212 extends in described In heart hole 221.

Referring to Fig.1, the side of the pedestal 22 offers a connection through-hole 222, the branch port of the catheter block 121 123 pass through the tail end that the connection through-hole 222 connects the infusion tube 212 by a long duct 31, realize the round pie needle The connection of seat mechanism 10 and the transfusion joint mechanism 20 is folded with current limliting folder 32 on the long duct 31.It is understood that Be the long duct 31 medical fluid is in limited open position in it in the case where the current limliting presss from both sides 32 clamping states, make in long duct 31 Medical fluid can slowly circulate, and the long duct 31 is made in positive pressure open position, to effectively prevent the formation of thrombus always, thus Reduce the risk for causing malpractice.

Referring to Fig. 3 or Fig. 4, the safety device 13 includes collet 131 and elastic safety intermediate plate 132, in the collet 131 Equipped with the axial passage passed through for the piercing needle 112,132 upper and lower ends of elastic safety intermediate plate be equipped with it is described The through-hole of 112 clearance fit of piercing needle, the elastic safety intermediate plate 132 are arranged in the collet 131.

Referring to Fig. 5, the tube wall of the piercing needle 112 is equipped with the casting lug thereon 113 greater than through-hole, the casting lug thereon 113 Distance apart from needle point is less than the distance between the through-hole in 132 upper and lower ends of elastic safety intermediate plate, the elastic safety 132 upper end of intermediate plate flexible deformation under the through-hole state that the piercing needle 112 passes through thereon, is moved back in the piercing needle 112 Out under the through-hole state of 132 upper end of elastic safety intermediate plate, 132 upper end of elastic safety intermediate plate is made in the flexible deformation Deviate the axial passage with lower through-hole.

It can be understood that 132 upper end of elastic safety intermediate plate passes through through hole shape thereon in the piercing needle 112 Flexible deformation under state, under the through-hole state that the piercing needle 112 exits 132 upper end of elastic safety intermediate plate, the bullet Property 132 upper end of safety clip in flexible deformation effect lower through-hole deviate the axial passage, the protrusion on the piercing needle 112 Block 113 is stuck on the through-hole of 132 lower end of elastic safety intermediate plate and is limited, to prevent 112 scathing of piercing needle It causes cross-infection, reduces medical staff's needle and stab probability, play the role of safeguard protection and very easy to use.

Preferably, be provided in the outer rim of the injection access aperture 211 the connection external screw thread of needleless injector, fixture block or Card slot.It can be understood that the injection access aperture 211 can directly cooperate needleless injector, strong applicability.

Further, the lower edge of the upper end wall thickness and central stitched open of the rubber tube 213, the rubber tube 213 increases Thick cuff in a ring, the rubber tube 213 are fitted close with the infusion tube 212.It can be understood that effectively meeting infusion Needs in the process can generate moment positive pressure, prevent venous return from entering solidification in the infusion tube 212, keep described defeated It is unobstructed to infuse pipe 212.In 211 in the liquid outlet connector end of the needleless injector insertion injection access aperture, the rubber is squeezed Pipe 213 makes the inner cavity of connector 21 described in its compression and back, enables the liquid outlet connector end of needleless injector and the infusion Pipe 212 docks.After the liquid outlet connector end of needleless injector is extracted, the rubber tube 213 resets, and by the infusion tube 212 are isolated from the outside world, and realize sterility protection.

Preferably, the inner wall of the rubber tube 213 is provided with four paws elastic piece 214, the rubber tube 213 and the four paws Rabbet in the annular groove 215 of 212 outer rim of infusion tube one end of elastic piece 214.It can be understood that the four paws elasticity Piece 214 can bend and extend out under the action of by external force, and the 213 middle part thin-walled of rubber tube passively extends spherical in shape Empty pocket；After external force disappearance, the resilient pressure effect of the spherical shape empty pocket makes the four paws elastic piece 214 and the rubber tube 213 reset, so that effectively preventing injection leakage returns the generation for staying problem with blood.

Referring to Fig. 6, the current limliting folder 32 includes symmetrically arranged convex platform 321 and lower convex platform 322, and the current limliting is pressed from both sides on 32 It is additionally provided with mutually matched fixture block 323 and card slot 324.It can be understood that the utility model preferably use the convex platform 321, 32 clamping of current limliting folder of the current limliting folder 32 of the lower convex platform 322, double polarizing keys is relatively stable, and Current limited Control is also stable.

Preferably, the side of the application 30 offers sector notch 301.It can be understood that in the piercing assembly 11 Be inserted in patient skin be intended to the place of injection it is subcutaneous after, the application 30 is fitted on patient skin convenient for medical staff.

The use principle and process of the utility model no pressure high-safety needle staying on vein: round pie needle stand mechanism 10 makes With preceding, the collet 131 is connect with the catheter block 121 and the needle tubing seat 111 respectively by front end boss and rear end inner hole Integrally, the piercing needle 112 passes through 132 upper end of elastic safety intermediate plate, the through-hole on lower end and axial passage and is placed in In the inlying catheter 122.After 10 use of round pie needle stand mechanism, the inlying catheter 122 is retained in patient's skin In skin, by the piercing needle 112 toward post-tensioning, until since the casting lug thereon 113 on the piercing needle 112 is stuck in the elasticity It is limited on the through-hole of 132 lower end of safety clip, the piercing needle 112 will be limited in the collet 131, pass through institute It states application 30 effectively to bind round pie needle stand mechanism 10 and the transfusion joint mechanism 20 on patient skin, by institute It states current limliting folder 32 and is placed in opening state, cooperate needleless injector to be infused by the injection access aperture 211.

The utility model no pressure high-safety needle staying on vein structure is simple, can effectively bind on patient skin, have The advantages of no pressure pressure mark-proof, further improves the comfort level of infusion process；Needleless injector, applicability can directly be cooperated By force；It prevents injection leakage and blood to return simultaneously stay the generation of problem, prevent piercing needle scathing from causing cross-infection, drop Low medical staff's needle stabs probability, plays the role of safeguard protection and very easy to use.

It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field For personnel, without departing from the concept of the premise utility, architectural form cans be flexible and changeable, and can be produced with subseries Product.Several simple deduction or replace are only made, it is true by the claims submitted all to shall be regarded as belonging to the utility model Fixed scope of patent protection.

Claims (8)

1. a kind of no pressure high-safety needle staying on vein, including round pie needle stand mechanism and transfusion joint mechanism, it is characterised in that: Application is bonded on round pie needle stand mechanism and the transfusion joint mechanism；

Round pie needle stand mechanism includes piercing assembly and indwelling needle assembly, and the piercing assembly includes needle tubing seat and is fixed on Piercing needle on needle tubing seat front end, the indwelling needle assembly include catheter block and inlying catheter；The piercing assembly and described Safety device is equipped between indwelling needle assembly；

The transfusion joint mechanism includes connector and the pedestal that is installed under the connector, and the upper end of the connector is provided with injection Access aperture, the connector are provided centrally with infusion tube, and the infusion tube is coated with rubber tube, the rubber tube portion accommodating In in the injection access aperture, so that the infusion tube is isolated from the outside world；The core of the pedestal forms centre bore, described One end of infusion tube extends in the centre bore；

The side of the pedestal offers a connection through-hole, and the branch port of the catheter block passes through the company by a long duct The tail end that hole connects the infusion tube is connected, realizes the connection of round pie needle stand mechanism and the transfusion joint mechanism, Current limliting folder is folded on the long duct.

2. no pressure high-safety needle staying on vein as described in claim 1, it is characterised in that: the safety device include collet and Elastic safety intermediate plate, is equipped with the axial passage passed through for the piercing needle in the collet, above and below the elastic safety intermediate plate Both ends are equipped with the through-hole with the piercing needle clearance fit, and the elastic safety intermediate plate is arranged in the collet.

3. no pressure high-safety needle staying on vein as claimed in claim 2, it is characterised in that: set on the tube wall of the piercing needle There is the casting lug thereon greater than through-hole, distance of the casting lug thereon apart from needle point is less than logical in the elastic safety intermediate plate upper and lower ends The distance between hole, elastic safety intermediate plate upper end flexible deformation under the through-hole state that the piercing needle passes through thereon, Under the through-hole state that the piercing needle exits elastic safety intermediate plate upper end, elastic safety intermediate plate upper end is described Flexible deformation acts on lower through-hole and deviates the axial passage.

4. no pressure high-safety needle staying on vein as described in claim 1, it is characterised in that: the upper end wall thickness of the rubber tube and Central stitched open, the lower edge of the rubber tube thicken cuff in a ring, and the rubber tube and the infusion tube are fitted close.

5. no pressure high-safety needle staying on vein as claimed in claim 4, it is characterised in that: the inner wall of the rubber tube is provided with Rabbet in the annular groove of the infusion tube outer rim one end of four paws elastic piece, the rubber tube and the four paws elastic piece.

6. no pressure high-safety needle staying on vein as described in claim 1, it is characterised in that: in the outer rim of the injection access aperture It is provided with external screw thread, fixture block or the card slot of connection needleless injector.

7. no pressure high-safety needle staying on vein as claimed in any one of claims 1 to 6, it is characterised in that: the current limliting clip pack Symmetrically arranged convex platform and lower convex platform are included, is additionally provided with mutually matched fixture block and card slot on the current limliting folder.

8. no pressure high-safety needle staying on vein as claimed in any one of claims 1 to 6, it is characterised in that: the one of the application Side offers sector notch.