CN209332894U

CN209332894U - Closed venous detaining needle

Info

Publication number: CN209332894U
Application number: CN201821960966.XU
Authority: CN
Inventors: 刘浩浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-27
Filing date: 2018-11-27
Publication date: 2019-09-03
Anticipated expiration: 2028-11-27

Abstract

The utility model provides a kind of closed venous detaining needle comprising: needle tubing, conduit, catheter block, silica gel plug, fixed pin, pushing block, needle stand, exhaust joint, extension tube, infusion connector.The closed venous indwelling needle construction of the utility model is simple, easy to operate, it can be achieved that singlehanded puncture.Meanwhile needle tubing blood back function is increased, fixing seat is increased on catheter block, can be effectively fixed.In addition, realizing automatic exhaust by external exhaust joint, operation being exhausted without connecting infusion apparatus, simplifies operating procedure.

Description

Closed venous detaining needle

Technical field

The utility model relates to a kind of remaining needles, more particularly to a kind of closed venous detaining needle.

Background technique

Disposable venous detaining needle product is used clinically for the acquisition of Peripheral vein infusion and blood sample, is used for It carries out short-term venipuncture indwelling and carries out liquid infusion use, because only having leading for high molecular material material therein after puncturing successfully Pipe indwelling human vein blood vessel, venous detaining needle due to have it is small to vascular stimulation, can more days of indwelling, reduce patient and puncture pain The features such as bitter, using simplicity, becomes one of current most widely used Centesis instrument.

But existing sealed venous detaining needle, when puncture left hand often hold help, the upper arm of fixed patient punctures Position, left hand need to unclamp fixed position after seeing blood back, and left hand send forward conduit, and the right hand is toward recession needle tubing, once it is solid to unclamp left hand When determining to send conduit before position, since blood vessel is no longer influenced by the fixed external force of left hand, blood vessel will often become bended, On direction, in angle, variation slightly can all occur, lead to puncture failure.

Meanwhile remaining needle indwelling it is fixed when, cannot effectively fix, cause point of puncture conduit mobile, be easy to fall off or Person causes phlebitis, and complication is more.In addition, existing closed remaining needle cannot observe needle tubing blood back, cannot have at the first time Effect determines whether needle tubing comes into blood vessel, is unfavorable for clinical manipulation.Existing open indwelling needle has the function of needle tubing blood back, But the risk for thering is blood to leak outside, nurse has the risk of infection correlation blood relationship infection, and clinical manipulation is cumbersome.

It before existing closed retained needle puncture, needs to connect infusion apparatus and operation is exhausted, operating process is cumbersome, increases Workload.Therefore, in view of the above-mentioned problems, it is necessary to propose further solution.

Utility model content

The purpose of this utility model is to provide a kind of closed venous detaining needle, with overcome it is existing in the prior art not Foot.

To realize above-mentioned purpose of utility model, the utility model provides a kind of closed venous detaining needle comprising: needle Pipe, conduit, catheter block, silica gel plug, fixed pin, pushing block, needle stand, exhaust joint, extension tube, infusion connector；

One end of the conduit is connected with described catheter block one end, one end of the fixed pin and the one of the silica gel plug End is assembled together, and the silica gel plug and fixed pin receiving are installed in the catheter block, and one end of the needle stand is set in institute The other end of catheter block to be stated, and can be separated with the catheter block, the pushing block is installed between the fixed pin and needle stand, The needle stand includes: the internal first inner chamber and second inner chamber for having and being isolated by an isolation part, and the pushing block is contained in described In first inner chamber, the needle tubing sequentially passes through the conduit, catheter block, silica gel plug, fixed pin, pushing block, isolation part and extends to In the second inner chamber, the needle stand is translucent material, and the needle tubing and isolation part are interference fitted, and the exhaust joint is installed on The other end of the needle stand, the infusion connector are connected by the extension tube with the catheter block.

One end of the improvement of closed venous detaining needle as the utility model, the conduit passes through a metal wedge and institute Catheter block one end is stated to be connected.

The improvement of closed venous detaining needle as the utility model has on the lateral wall at the fixed pin both ends convex Platform, the fixed pin are assembled together by the boss of one end with the silica gel plug, and the boss and the conduit of the other end are passed through Seat fastens.

The improvement of closed venous detaining needle as the utility model is also set up on the inner sidewall of the catheter block State the limiting stand terrace of silica gel plug.

The improvement of closed venous detaining needle as the utility model, the closed venous detaining needle further includes band logical For the elastic slice of the through-hole of needle tubing, the elastic slice is contained in the hole of the through-hole in the cavity inside the pushing block, and on the elastic slice Diameter is less than the diameter of the syringe tip clamp.

The improvement of closed venous detaining needle as the utility model, the elastic slice include main body and from the main body The elastic arm that both ends are extended, the elastic arm that both ends are extended is arranged in a crossed manner, and the end of an elastic arm is resisted against separately The bending part of one elastic arm.

The improvement of closed venous detaining needle as the utility model, the exhaust joint have ventilated membrane.

The improvement of closed venous detaining needle as the utility model is in the infusion connector is that threeway or two connect Head.

The improvement of closed venous detaining needle as the utility model is additionally provided with tongs in the extension tube.

The improvement of closed venous detaining needle as the utility model is also connected on the lateral wall of the catheter block solid Reservation.

Compared with prior art, the utility model has the beneficial effects that the closed venous detaining needle knot of the utility model Structure is simple, easy to operate, it can be achieved that singlehanded puncture.Meanwhile needle tubing blood back function is increased, fixation is increased on catheter block Seat, can effectively be fixed.In addition, realizing automatic exhaust by external exhaust joint, being exhausted without connecting infusion apparatus Operation, simplifies operating procedure.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments recorded in the utility model, for those of ordinary skill in the art, is not making the creative labor Under the premise of, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the floor map of the closed venous detaining needle of the utility model；

Fig. 2 is the plane decomposition schematic diagram of the closed venous detaining needle of the utility model；

Fig. 3 is the closed venous detaining needle using process diagram of the utility model；

Fig. 4 is the closed venous detaining needle using process diagram of the utility model.

Specific embodiment

The utility model is described in detail in each embodiment shown in reference to the accompanying drawing, but it should be stated that, These embodiments are not limitation of the utility model, those of ordinary skill in the art according to these embodiments made by function Energy, method or equivalent transformation or substitution in structure, belong within the protection scope of the utility model.

As shown in Figure 1, 2, the closed venous detaining needle of the utility model includes: needle tubing 1, conduit 2, catheter block 3, silica gel Fill in 4, fixed pin 5, pushing block 6, needle stand 7, exhaust joint 8, extension tube 9, infusion connector 10.

One end of the conduit 2 is connected with described 3 one end of catheter block.Preferably, one end of the conduit 2 passes through a gold medal Belong to wedge 11 to be connected with described 3 one end of catheter block.Fixing seat 12 is also connected on the lateral wall of the catheter block 3.In this way, passing through Fixing seat 12 is increased on catheter block 3, can be effectively fixed.

One end of the fixed pin 5 and one end of the silica gel plug 4 are assembled together, and the silica gel plug 4 and fixed pin 5 are received Appearance is installed in the catheter block 3.In order to meet the needs of assembly, there is boss on the lateral wall at 5 both ends of fixed pin.This When, the fixed pin 5 is assembled together by the boss of one end with the silica gel plug 4, is led by the boss of the other end with described Tube socket 3 fastens.In addition, being additionally provided with the limiting stand terrace of the silica gel plug 4 on the inner sidewall of the catheter block 3.

One end of the needle stand 7 is set in the other end of the catheter block 3, and can be separated with the catheter block 3, institute Pushing block 6 is stated to be installed between the fixed pin 5 and needle stand 7.Specifically, the needle stand 7 includes: internal with by an isolation part 71 The first inner chamber 72 and second inner chamber 73 being isolated.The pushing block 6 is contained in the first inner chamber 72.Meanwhile the needle tubing 1 It sequentially passes through the conduit 2, catheter block 3, silica gel plug 4, fixed pin 5, pushing block 6, isolation part 71 and extends to the second inner chamber In 73, and the needle tubing 1 and isolation part 71 are interference fitted.The needle stand 7 is translucent material, is so seen back in second inner chamber 73 It is intravascular to can be determined that needle tubing 1 enters after blood.

In addition, the exhaust joint 8 is installed on the other end of the needle stand 7, the exhaust joint 8 has ventilated membrane 81, The ventilated membrane 81 can be vented, but blood can be prevented to pass through.In this way, realizing automatic exhaust by external exhaust joint 8, can sentencing Determine needle tubing to enter in vein blood vessel.

The infusion connector 10 is connected by the extension tube 9 with the catheter block 3.Wherein, the infusion connector 10 For threeway or two-way joint.When the infusion connector 10 is threeway, no-needle transfusion is connected separately on the infusion connector 10 Connector 10 and another exhaust joint 8.When the infusion head is two logical, another exhaust joint 8 is connected on the infusion connector 10.Such as This realizes air in automatic-discharging extension tube 9, operation is exhausted without connecting infusion apparatus by external exhaust joint 8, letter Operating procedure is changed.In addition, being additionally provided with tongs 13 in the extension tube 9.

The closed venous detaining needle further includes elastic slice 14 of the band logical for the through-hole of needle tubing 1, which is used in needle It is that the syringe needle of needle tubing 1 stays in elastic slice when pipe 1 is extracted, to play the role of anti-needle thorn.

Specifically, the elastic slice 14 is contained in the cavity inside the pushing block 6, and the hole of the through-hole on the elastic slice 14 Diameter is less than the diameter of the 1 end clamp of needle tubing.The elastic slice 14 includes main body and extends from the main body both ends Elastic arm, the elastic arm that both ends are extended is arranged in a crossed manner, and the end of an elastic arm is resisted against the folding of another elastic arm Crook.

As shown in Figure 3,4, when the closed venous detaining needle of the utility model carries out vascular puncture, needle tubing enters blood vessel, Blood flows into the second inner chamber of needle stand by needle tubing inner hole, blood will not under the blocking of ventilated membrane in the case where vein pressure must be acted on Leakage can be determined that needle tubing enters intravascular after second inner chamber sees blood back, increase compared to traditional closed remaining needle Needle tubing blood back can effectively determine that needle tubing enters blood vessel, relatively more intuitive, determine without nurse.

Then puncture angle is reduced, thumb pushes pushing block, and catheter block is pushed to advance, and enters to catheter tip disengaging needle tubing quiet After arteries and veins, in the case where vein pressure must act on, blood enters catheter block along conduit cavity, is flowed into extension tube, it is seen that the blood back of extension tube Afterwards, it is possible to determine that conduit enters blood vessel, and singlehanded puncture may be implemented and send pipe.Compared with traditional remaining needle, does not have to unclamp and fix The left hand of skin fixes catheter block, and then the right hand simplifies the step of pipe is sent in puncture toward recession needle tubing.Simultaneously as not having to The left hand opened into fixed point of puncture is unclamped, blood vessel will not slide offset, can effectively improve puncture success rate.

After hose fully enters blood vessel, fixed catheter seat continues to withdraw from needle tubing, and the clamp of needle tubing backs to elastic slice Hole, since the internal diameter in hole is small and clamp, needle tubing is stuck, and the needle point of needle tubing is locked in the interior intracavitary of elastic slice and pushing block, rises It is completely disengaged to the effect of dual anti-needle thorn, it loses in medical sharp device collection box.

In addition, being connected to exhaust joint behind threeway infusion connector or two logical infusion connectors, blood backflow arrives ventilated membrane Place, blood are blocked, and outside the air permeable ventilated membrane drain in pipe, are then shut off tongs, remove exhaust joint, connection Infusion connector or calparine cap can carry out infusion treatment.Compared with traditional remaining needle due to rear end connection be exhaust joint, Physiological saline or transfusion liquid can be passed through without being attached infusion apparatus to remaining needle in advance as blood back is outside air discharge duct Operation is exhausted in body, can effectively reduce the waste of medical fluid, can also reduce the operating procedure of nurse, reduces the work of nurse Amount improves nursing level.

In conclusion the closed venous indwelling needle construction of the utility model is simple, it is easy to operate, it can be achieved that singlehanded wear Thorn.Meanwhile needle tubing blood back function is increased, fixing seat is increased on catheter block, can be effectively fixed.In addition, passing through External exhaust joint realizes automatic exhaust, operation is exhausted without connecting infusion apparatus, simplifies operating procedure.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims

1. a kind of closed venous detaining needle, which is characterized in that the closed venous detaining needle includes: needle tubing, conduit, conduit Seat, silica gel plug, fixed pin, pushing block, needle stand, exhaust joint, extension tube, infusion connector；

One end of the conduit is connected with described catheter block one end, and one end of one end of the fixed pin and the silica gel plug fills With together, the silica gel plug and fixed pin receiving are installed in the catheter block, and one end of the needle stand is set in described lead The other end of tube socket, and can be separated with the catheter block, the pushing block is installed between the fixed pin and needle stand, described Needle stand includes: the internal first inner chamber and second inner chamber for having and being isolated by an isolation part, and the pushing block is contained in described first In inner cavity, the needle tubing sequentially passes through the conduit, catheter block, silica gel plug, fixed pin, pushing block, isolation part and extends to described In second inner chamber, the needle stand is translucent material, and the needle tubing and isolation part are interference fitted, and the exhaust joint is installed on described The other end of needle stand, the infusion connector are connected by the extension tube with the catheter block.

2. closed venous detaining needle according to claim 1, which is characterized in that one end of the conduit passes through a metal Wedge is connected with described catheter block one end.

3. closed venous detaining needle according to claim 1, which is characterized in that on the lateral wall at the fixed pin both ends With boss, the fixed pin is assembled together by the boss of one end with the silica gel plug, boss and institute by the other end Catheter block is stated to fasten.

4. closed venous detaining needle according to claim 3, which is characterized in that also set on the inner sidewall of the catheter block It is equipped with the limiting stand terrace of the silica gel plug.

5. closed venous detaining needle according to claim 1, which is characterized in that the closed venous detaining needle also wraps Band logical is included for the elastic slice of the through-hole of needle tubing, the elastic slice is contained in the cavity inside the pushing block, and logical on the elastic slice The aperture in hole is less than the diameter of the syringe tip clamp.

6. closed venous detaining needle according to claim 5, which is characterized in that the elastic slice includes main body and from institute The elastic arm that main body both ends are extended is stated, the elastic arm that both ends are extended is arranged in a crossed manner, and the end of an elastic arm is supported It is against the bending part of another elastic arm.

7. closed venous detaining needle according to claim 1, which is characterized in that the exhaust joint has ventilated membrane.

8. closed venous detaining needle according to claim 1, which is characterized in that the infusion connector is threeway or two Pass joint.

9. closed venous detaining needle according to claim 1, which is characterized in that be additionally provided with sealing in the extension tube Folder.

10. closed venous detaining needle according to claim 1, which is characterized in that on the lateral wall of the catheter block also It is connected with fixing seat.