CN201033192Y - Needle for remaining in vein having positive pressure joint - Google Patents

Abstract

The utility model discloses a vein remaining needle with a positive pressure joint, which comprises a canal; front end of the canal is communicated with the remaining needle and rear end of the canal is communicated with a connecting piece; the connecting piece is connected fixedly with the positive pressure joint. The utility model, during pulling out the infusion set or the injector, is able to push forward the liquid medicine, thus preventing the blood flow backward from causing thrombus.

Description

The venous detaining needle of band positive pressure connector

Technical field

This utility model relates to a kind of venous detaining needle with positive pressure connector.

Background technology

Venous detaining needle is as the regeneration product of scalp draw point, be widely used in clinical, its advantage more and more by the nursing staff cognition.

The advantage of venous detaining needle has: (1) venous indwelling needle cannula is made by advanced person's biomaterial Vialon, and sleeve pipe softness, toughness be big, be difficult for the injured blood vessel wall and cause and exosmose that its leakage rate is below 13.8%.(2) venous indwelling is stabbed for a short time at blood vessel, protects blood vessel effectively, and tube drawing reduces the destruction to blood vessel after of short duration reparation is promptly reusable.(3) venous detaining needle has reduced the patient's blood vessel puncture time, has alleviated patient's misery, has alleviated nurse's workload.(4) trocar retention time in blood vessel is longer, can accomplish venous transfusion at any time for patients such as operation, neonate, critical, rescues, guarantees treatment.(5) economical price of the trocar equates both economical practicality substantially with common scalp draw point transfusion consumptive material.

Present remaining needle comprises remaining needle head part, conduit and has the connector of one or more passages.One end of conduit is connected with the remaining needle head part, and the other end of conduit is communicated with connector, and the port of connector generally is equipped with calparine cap and seals.

But such remaining needle needs repeated multiple times washing pipe, tube sealing, has not only increased nursing work load, has also increased phlebitic incidence rate simultaneously.And in practical operation, no matter be transfusion device or syringe, when remaining needle withdraws from, the capital produces negative pressure and blood back, and forms thrombosis, prevent the generation of blood back, just must be when the withdraw of the needle while moving back feed liquor, require the nurse to have relatively abundanter behaviour's experience, otherwise, be difficult to obtain satisfied effect.

Summary of the invention

This utility model purpose is: a kind of venous detaining needle with positive pressure connector is provided, this remaining needle has reduced repeated multiple times tube sealing, washing pipe program, alleviated nursing work load, improve work efficiency, also reduced phlebitic incidence rate simultaneously, in addition, when transfusion device or syringe are extracted, can be pushed forward into medicinal liquid, avoid blood to reflux and formed thrombosis, reduce the plugging rate.

The technical solution of the utility model is: a kind of venous detaining needle with positive pressure connector, comprise conduit, and the front end of conduit is communicated with the remaining needle head part, and the rear end of conduit is communicated with connector, is fixedly connected with positive pressure connector on the described connector.

The further technical scheme of this utility model is: a kind of venous detaining needle with positive pressure connector, comprise conduit, and the front end of conduit is communicated with the remaining needle head part, and the rear end of conduit is communicated with connector, is fixedly connected with positive pressure connector on the described connector;

Described positive pressure connector comprises fitting sleeve, the endoporus rear end of fitting sleeve is provided with step, the fitting sleeve inner diameter of the diameter of the fitting sleeve inwall before the step after greater than step, be provided with the resilient sleeve that is mated in the fitting sleeve, the resilient sleeve that is positioned at behind the step is inserted with sealed core, the rear end outer wall of resilient sleeve and the endoporus rear end of fitting sleeve closely cooperate, the front end of fitting sleeve is fixed with baffle, and the front end face of resilient sleeve and the rear end face of baffle are connected and fixed, and forms inner chamber, baffle is provided with passage, passage is communicated with inner chamber, is axially arranged with drainage trough on the inwall of fitting sleeve, and drainage trough forms back cavity outside baffle, baffle is provided with the pod apertures that is communicated with back cavity, pod apertures is communicated with connector, and the rear end face of resilient sleeve is provided with the drain sheet, and the drain sheet is provided with splitter box, during job state, splitter box and drainage trough conducting.

The more detailed technical scheme of this utility model is: a kind of venous detaining needle with positive pressure connector, comprise conduit, and the front end of conduit is communicated with the remaining needle head part, and the rear end of conduit is communicated with connector, is fixedly connected with positive pressure connector on the described connector;

Described positive pressure connector comprises fitting sleeve, the endoporus rear end of fitting sleeve is provided with step, the fitting sleeve inner diameter of the diameter of the fitting sleeve inwall before the step after greater than step, be provided with the resilient sleeve that is mated in the fitting sleeve, the resilient sleeve that is positioned at behind the step is inserted with sealed core, the rear end outer wall of resilient sleeve and the endoporus rear end of fitting sleeve closely cooperate, the front end of fitting sleeve is fixed with baffle, and the front end face of resilient sleeve and the rear end face of baffle are connected and fixed, and forms inner chamber, baffle is provided with passage, passage is communicated with inner chamber, is axially arranged with drainage trough on the inwall of fitting sleeve, and drainage trough forms back cavity outside baffle, baffle is provided with the pod apertures that is communicated with back cavity, pod apertures is communicated with connector, and the rear end face of resilient sleeve is provided with the drain sheet, and the drain sheet is provided with splitter box, during job state, splitter box and drainage trough conducting; The endoporus front end of described fitting sleeve is provided with step, the fitting sleeve inner diameter of the diameter of the fitting sleeve inwall before the step after greater than step, baffle is arranged at the place ahead of step, the front end of baffle is provided with a circle flange, the rear end face of flange is fixedlyed connected with the front end face of fitting sleeve, and back cavity is set in place outside the circumference of the baffle at flange rear;

Intracavity is provided with stage clip in described, and the front end of stage clip is connected with the rear end face of baffle, and the rear end of stage clip is fixed on the front end of sealed core; Described splitter box is a cross recess; The outer wall of described fitting sleeve rear end is provided with external screw thread.

This utility model advantage is:

1. this utility model has reduced repeated multiple times tube sealing, washing pipe program, has alleviated nursing work load, has improved work efficiency, has also reduced phlebitic incidence rate simultaneously.

2. this utility model does not only have blood reflux to flow in the remaining needle when transfusion device or syringe are extracted, and can be pushed forward into medicinal liquid on the contrary, has avoided blood to reflux and has formed thrombosis, has reduced the plugging rate, does not need the reuse anticoagulant, has widened the scope of application of remaining needle.

3. this utility model is provided with passage on flow deflector, and when resilient sleeve moved forward or retreats, inner chamber can pass through passage aerofluxus or air inlet, thereby the air pressure of intracavity is identical with atmospheric pressure in guaranteeing.

4. this utility model adopts the needleless interconnection system to connect, and has avoided because of the carry disease germs generation of the phenomenon that causes patient infection's disease of entry needle.

5. this utility model adopts the mode that is spirally connected to be connected with syringe, transfusion device, makes connection more reliable, has prevented the rotation between dispensing end and the fitting sleeve, has guaranteed the injection effect.

Description of drawings

Below in conjunction with drawings and Examples this utility model is further described:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the connection diagram of the transfusion end of this utility model positive pressure connector and syringe, transfusion device;

Fig. 3 is the sketch map of this utility model baffle;

Fig. 4 is the vertical view of Fig. 3;

Fig. 5 is the sketch map of this utility model drain sheet.

Wherein: 1 conduit; 2 remaining needle head part; 3 connectors; 4 positive pressure connectors; 5 fitting sleeves; 6 steps; 7 resilient sleeve; 8 sealed cores; 9 baffles; 10 inner chambers; 11 passages; 12 drainage troughs; 13 back cavities; 14 pod apertures; 15 drain sheets; 16 splitter boxs; 17 steps; 18 flanges; 19 stage clips; 20 dispensing ends; 21 clamping rings; 22 liquid storage cylinders.

The specific embodiment

Embodiment: as Fig. 1, Fig. 2 and shown in Figure 3, a kind of venous detaining needle with positive pressure connector, comprise conduit 1, the front end of conduit 1 is communicated with remaining needle head part 2, the rear end of conduit 1 is communicated with theconnector 3 with one or more passages, andconnector 3 is fixedly connected withpositive pressure connector 4 at least on a port.

Positive pressure connector 4 comprisesfitting sleeve 5, the endoporus rear end offitting sleeve 5 is provided withstep 6,fitting sleeve 5 inner diameters of the diameter offitting sleeve 5 inwalls before thestep 6 after greater thanstep 6, be provided with theresilient sleeve 7 that is mated in thefitting sleeve 5, theresilient sleeve 7 that is positioned at behind thestep 6 is inserted with sealedcore 8, the rear end outer wall ofresilient sleeve 7 and the endoporus rear end offitting sleeve 5 closely cooperate, the endoporus front end offitting sleeve 5 is provided withstep 17, fittingsleeve 5 inner diameters of the diameter offitting sleeve 5 inwalls before thestep 17 after greater thanstep 17, the place ahead ofstep 17 is provided withbaffle 9, the front end ofbaffle 9 is provided with acircle flange 18, and the rear end face offlange 18 is fixedlyed connected with the front end face offitting sleeve 5.

Be axially arranged withdrainage trough 12 on the inwall offitting sleeve 5,drainage trough 12 formsback cavity 13 outsidebaffle 9,back cavity 13 is positioned at outside the circumference ofbaffle 9 atflange 18 rears, the rear end face of the front end face ofresilient sleeve 7 andbaffle 9 is connected and fixed, forminner chamber 10, be provided withstage clip 19 in theinner chamber 10, the front end ofstage clip 19 is connected with the rear end face ofbaffle 9, and the rear end ofstage clip 19 is fixed on the front end of sealedcore 8; Baffle 9 is provided withpassage 11,passage 11 is communicated withinner chamber 10,baffle 9 is provided with the pod apertures 14 that is communicated withback cavity 13, pod apertures 14 is communicated withconnector 3, the rear end face ofresilient sleeve 7 is provided withdrain sheet 15,drain sheet 15 is provided with cross recess, during job state, and cross recess anddrainage trough 12 conductings; The outer wall offitting sleeve 5 rear ends is provided with external screw thread.

Syringe that is connected with above-mentioned remaining needle or transfusion device are provided with aclamping ring 21 in the periphery of dispensingend 20, the inwall ofclamping ring 21 is provided with the female thread that matches with the external screw thread offitting sleeve 5 rear ends.

During use, only need directly fittingsleeve 5 is slightly inserted in the termination of the dispensingend 20 of syringe or transfusion device, make thatresilient sleeve 7 is little forward moves, rotary injection device or transfusion device again, make the female thread ofclamping ring 21 and the external thread bolt connection offitting sleeve 7, the dispensingend 20 progressiveresilient sleeve 7 that promote are moved forward, inject then; During injection, medicinal liquid in syringe or the transfusion device flows out from dispensingend 20, in cross recess flows todrainage trough 12 and liquid storage cylinder 22 (liquid storage cylinder 22 refers to becauseresilient sleeve 22 bending parts thatresilient sleeve 7 reaches form and the gap betweenstep 6 front end faces), flow in theback cavity 13 throughdrainage trough 12 again, medicinal liquid in theback cavity 13 flows intoconnector 3, conduit 1, remaining needle head part 2 successively through pod apertures 14 again, injects human body at last; Injected when extracting, the dispensingend 20 of syringe or transfusion device retreats, andresilient sleeve 7 also retreats thereupon, because the outer wall and thefitting sleeve 5 rear end inwalls ofresilient sleeve 7 closely cooperate once more at this moment, the medicinal liquid ofliquid storage cylinder 22 is squeezed and can only flows intoback cavity 13 forward, thereby continues to inject human body.Therefore, this utility model does not only have blood reflux to flow in the remaining needle when transfusion device or syringe are extracted, can be pushed forward into medicinal liquid on the contrary, avoid blood to reflux and formed thrombosis, reduce the plugging rate, do not need the reuse anticoagulant, widened the scope of application of remaining needle.

When this remaining needle moved forward or retreats in resilient sleeve, inner chamber can pass through passage aerofluxus or air inlet, thereby the air pressure of intracavity is identical with atmospheric pressure in guaranteeing.

This utility model has reduced repeated multiple times tube sealing, washing pipe program, has alleviated nursing work load, has improved work efficiency, has also reduced phlebitic incidence rate simultaneously.And this utility model adopts the needleless bolt connection type to connect, and has avoided also making connection more reliable simultaneously because of the carry disease germs generation of the phenomenon that causes patient infection's disease of entry needle, has prevented the rotation between dispensing end and the fitting sleeve, has guaranteed the injection effect.

Claims (6)

1. venous detaining needle with positive pressure connector, comprise conduit (1), the front end of conduit (1) is communicated with remaining needle head part (2), and the rear end of conduit (1) is communicated with connector (3), it is characterized in that: be fixedly connected with positive pressure connector (4) on the described connector (3).

2. according to the venous detaining needle of the described band positive pressure connector of claim 1, it is characterized in that: described positive pressure connector (4) comprises fitting sleeve (5), the endoporus rear end of fitting sleeve (5) is provided with step (6), fitting sleeve (5) inner diameter of the diameter of fitting sleeve (5) inwall that step (6) is preceding after greater than step (6), be provided with the resilient sleeve (7) that is mated in the fitting sleeve (5), the resilient sleeve (7) that is positioned at behind the step (6) is inserted with sealed core (8), the endoporus rear end of the rear end outer wall of resilient sleeve (7) and fitting sleeve (5) closely cooperates, the front end of fitting sleeve (5) is fixed with baffle (9), the rear end face of the front end face of resilient sleeve (7) and baffle (9) is connected and fixed, form inner chamber (10), baffle (9) is provided with passage (11), passage (11) is communicated with inner chamber (10), be axially arranged with drainage trough (12) on the inwall of fitting sleeve (5), drainage trough (12) forms back cavity (13) outside baffle (9), baffle (9) is provided with the pod apertures (14) that is communicated with back cavity (13), pod apertures (14) is communicated with connector (3), the rear end face of resilient sleeve (7) is provided with drain sheet (15), drain sheet (15) is provided with splitter box (16), during job state, splitter box (16) and drainage trough (12) conducting.

3. according to the venous detaining needle of the described band positive pressure connector of claim 2, it is characterized in that: the endoporus front end of described fitting sleeve (5) is provided with step (17), fitting sleeve (5) inner diameter of the diameter of fitting sleeve (5) inwall that step (17) is preceding after greater than step, baffle (9) is arranged at the place ahead of step (17), the front end of baffle (9) is provided with a circle flange (18), the rear end face of flange (18) is fixedlyed connected with the front end face of fitting sleeve (5), and back cavity (13) is set in place outside the circumference of the baffle (9) at flange (18) rear.

4. according to the venous detaining needle of the described band positive pressure connector of claim 2, it is characterized in that: be provided with stage clip (19) in the described inner chamber (10), the front end of stage clip (19) is connected with the rear end face of baffle (9), and the rear end of stage clip (19) is fixed on the front end of sealed core (8).

5. according to the venous detaining needle of the described band positive pressure connector of claim 2, it is characterized in that: described splitter box (16) is a cross recess.

6. according to claim 2 or 3 described needleless interconnection system remaining needles, it is characterized in that: the outer wall of described fitting sleeve (5) rear end is provided with external screw thread.

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