Disposable sensitive blood return hose vein needle

Abstract

The invention relates to a disposable sensitive blood return hose vein needle which comprises a hose vein needle body and a sensitive blood return device, and the hose vein needle body is composed of a vein needle body, a transfusion tee joint, a needle seat, a hose and a liquid penetrating hole. According to the technical scheme, when infusion treatment is carried out on a patient, the metal vein needle for puncturing can be pulled out, the front portion of the hose is reserved in the vein of the patient, the rear portion of the hose is reserved on the arm of the patient, and therefore the situation that the metal vein needle is reserved in the vein of the patient, and the needle point of the vein needle is prone to hurting the blood vessel can be greatly reduced; meanwhile, the flexible pipe intravenous needle can be effectively matched with a sensitive blood return device, blood return information brought by the sensitive blood return device can be clearly and conveniently seen through the liquid penetrating hole in the intravenous needle, and the judgment rate that the flexible pipe intravenous needle correctly penetrates into the blood vessel of the patient is effectively increased.

Description

Technical Field

[0001] This invention relates to an intravenous needle, and more particularly to a disposable, sensitive blood return tubular intravenous needle. Background Technology

[0002] In current intravenous infusion therapy, metal venous needles are inserted into the veins for treatment. However, during treatment, especially in children or unconscious elderly people, the needle tip may scratch the veins if the arm moves erratically.

[0003] Furthermore, during multiple intravenous infusion treatments, disposable intravenous needles are used to minimize the number of punctures. The metal intravenous needle is left in the patient's vein, and the interval between each infusion is relatively long. The metal intravenous needle remains in the blood for a long time, which can cause blood clots to form. When the infusion is repeated, the blood clots detach with the medication, and the detached blood clots can form thrombi in the patient's blood vessels, endangering human health.

[0004] In existing technologies, the observation puncture site for indwelling needles is located slightly below the needle tip, with a small observation opening. After the indwelling needle tubing is wrapped around the puncture needle, it becomes even more difficult to observe and judge the accuracy of the puncture location during the puncture. This can lead to user misjudgment and forced punctures, which in turn greatly reduces the success rate of punctures on the first attempt and causes more unnecessary pain to patients. Summary of the Invention

[0005] In view of this, the main objective of this invention is to provide a disposable, sensitive blood return tubular intravenous needle. This technical solution allows the metal intravenous needle used for puncture to be withdrawn, leaving the front of the tubular tube in the patient's vein for a relatively long period. It also prevents accidents caused by children moving their arms or elderly people losing consciousness, which could lead to injury to the patient's vein. Furthermore, in conjunction with a sensitive blood return device, it improves the operator's ability to observe blood return, thereby effectively increasing the accuracy of judging whether the tubular intravenous needle has correctly entered the patient's vein. The infection-proof sheath prevents the needle tip from injuring or infecting the operator and the person handling the needle when it is withdrawn.

[0006] To achieve the above object, the technical solution of the present invention is implemented as follows: A disposable sensitive blood-returning flexible tube venous needle, comprising a flexible tube venous needle and a sensitive blood-returner. The sensitive blood-returner is connected to the flexible tube venous needle through an infusion flexible tube. The flexible tube venous needle is composed of a venous needle, an infusion three-way, a needle seat, a flexible tube, and a liquid-permeating hole. The infusion three-way is in an inverted "卜" shape. The needle seat is arranged at the upper end of the vertical direction of the infusion three-way. The upper end of the venous needle is fixed on the needle seat, and the lower end of the venous needle extends vertically downward to the outside of the lower end of the infusion three-way. The flexible tube is wrapped around the lower part of the venous needle, and the upper end of the flexible tube is hermetically fixed at the lower end of the vertical direction of the infusion three-way. The bypass port of the infusion three-way is connected to the infusion flexible tube. The liquid-permeating hole is arranged on the side wall of the venous needle corresponding to the bypass port of the infusion three-way.

[0007] As a further technical solution, in the flexible tube venous needle, there is also a silicone soft plug, which is arranged inside the middle of the vertical direction of the infusion three-way and is located above the bypass port of the infusion three-way.

[0008] As a further technical solution, the lower end of the flexible tube in the flexible tube venous needle is provided with a guide slope.

[0009] As a further technical solution, in the flexible tube venous needle, there is also a supporter, and one end of the supporter is fixed on the needle seat located at the upper end of the vertical direction of the infusion three-way.

[0010] As a further technical solution, the flexible tube venous needle also includes an anti-infection sheath, a connecting line, and a notch. The anti-infection sheath is arranged inside the vertical direction of the infusion three-way below the needle seat. One end of the connecting line is fixed on the supporter connected to the needle seat as a whole, and the other end of the connecting line is fixed on the anti-infection sheath. The notch is arranged on the upper side wall of the vertical direction of the infusion three-way.

[0011] As a further technical solution, there is also an exhaust elimination plug, which is arranged at the intersection of the three-way connection of the infusion three-way. The upper part of the exhaust elimination plug is connected to the silicone soft plug as a whole. The lower part of the exhaust elimination plug forms an inclined section along the upper edge of the bypass of the infusion three-way to expose the liquid-permeating hole.

[0012] As a further technical solution, in the flexible tube venous needle, there is also a needle head protection cover, which is buckled on the outside of the flexible tube, and the upper end of the needle head protection cover is sleeved on the lower end of the vertical direction of the infusion three-way.

[0013] The beneficial effects of adopting the above technical solution are as follows: A disposable, sensitive blood return tubular intravenous needle allows patients to remove the metal intravenous needle during intravenous infusion, leaving the front of the tubing in the patient's vein and the rear in the patient's arm. This significantly reduces the risk of the metal needle remaining in the vein, which can easily damage blood vessels. It also greatly reduces patient discomfort and prevents accidents caused by children or unconscious elderly individuals moving their arms, thus avoiding injury to the patient's veins. Furthermore, it effectively works in conjunction with a sensitive blood return device; the blood return information from the device can be clearly and easily observed through the perforation hole on the metal needle, effectively improving the sensitivity of the tubing. The accuracy of correctly inserting the intravenous needle into the patient's blood vessel is improved. The air venting plug fills most of the cavity in the lower part of the silicone soft stopper, allowing the medication to quickly enter the intravenous needle through the perforation hole along the inclined cut surface of the air venting plug. This greatly reduces residual air bubbles generated when the medication fills the right-angle cavity, reducing medication residue in the infusion stopcock. When the intravenous needle is continuously withdrawn, the needle tip remains in the anti-infection sheath. When the connecting line is tightened, the connecting line pulls the anti-infection sheath away from the infusion stopcock. After the anti-infection sheath is removed, because the connecting line is designed on one side, the anti-infection sheath tilts to one side. After tilting, the needle tip will stick to the inner wall of the anti-infection sheath, preventing the needle tip from scratching and infecting the operator and the person handling the needle when withdrawing it. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 This is a cross-sectional view of the flexible intravenous needle in this invention.

[0016] Figure 3 This is a cross-sectional view of the taut connecting line of the flexible intravenous needle in this invention.

[0017] Figure 4 This is a cross-sectional view of the intravenous catheter in this invention, showing the process of removing the anti-infection sheath and disconnecting it from the infusion tee.

[0018] In the diagram, 1 is a flexible intravenous needle, 2 is a sensitive blood return device, 3 is an infusion tubing, 4 is an intravenous needle, 5 is an infusion three-way stopcock, 6 is a needle hub, 7 is a tubing, 8 is a perforation port, 9 is a silicone soft plug, 10 is a guide slope, 11 is a support device, 12 is an anti-infection sheath, 13 is a connecting wire, 14 is a venting plug, 15 is an inclined section, 16 is a needle protector, and 17 is a notch. Detailed Implementation

[0019] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings.

[0020] like Figures 1-4 As shown in the figure, the disposable sensitive blood-returning hose venous needle of the present invention includes a hose venous needle 1 and a sensitive blood-return device 2. The sensitive blood-return device 2 is connected to the hose venous needle 1 through an infusion hose 3. The hose venous needle 1 is composed of a venous needle 4, an infusion three-way valve 5, a needle seat 6, a hose 7, and a liquid-permeating hole 8. The infusion three-way valve 5 is in an inverted "卜" shape. The needle seat 6 is arranged at the upper end in the vertical direction of the infusion three-way valve 5. The upper end of the venous needle 4 is fixed on the needle seat 6, and the lower end of the venous needle 4 extends vertically downward to the outside of the lower end of the infusion three-way valve 5. The hose 7 is wrapped around the lower part of the venous needle 4, and the upper end of the hose 7 is hermetically fixed at the lower end in the vertical direction of the infusion three-way valve 5. The bypass port of the infusion three-way valve 5 is connected to the infusion hose 3. The liquid-permeating hole 8 is arranged on the side wall of the venous needle 4 corresponding to the bypass port of the infusion three-way valve 5.

[0021] As a further embodiment, in the hose venous needle 1, a silica gel soft plug 9 is further included. The silica gel soft plug 9 is arranged inside the middle part in the vertical direction of the infusion three-way valve 5 and is located above the bypass port of the infusion three-way valve 5.

[0022] As a further embodiment, a guide slope 10 is arranged at the lower end of the hose 7 in the hose venous needle 1.

[0023] As a further embodiment, in the hose venous needle 1, a supporter 11 is further included. One end of the supporter 11 is fixed on the needle seat 6 located at the upper end in the vertical direction of the infusion three-way valve 5.

[0024] As a further embodiment, an anti-infection sheath 12, a connecting wire 13, and a notch 17 are further included in the hose venous needle 1. The anti-infection sheath 12 is arranged inside the vertical direction of the infusion three-way valve 5 below the needle seat 6. One end of the connecting wire 13 is fixed on the supporter 11 connected to the needle seat 6 as a whole, and the other end of the connecting wire 13 is fixed on the anti-infection sheath 12. The notch 17 is arranged on the upper side wall in the vertical direction of the infusion three-way valve 5.

[0025] As a further embodiment, an exhaust elimination plug 14 is further included. The exhaust elimination plug 14 is arranged at the three-way connection intersection of the infusion three-way valve 5. The upper part of the exhaust elimination plug 14 is connected to the silica gel soft plug 9 as a whole. The lower part of the exhaust elimination plug 14 forms an inclined section 15 downward along the upper edge of the bypass of the infusion three-way valve 5 to expose the liquid-permeating hole 8.

[0026] As a further embodiment, in the hose venous needle 1, a needle head protection cover 16 is further included. The needle head protection cover 16 is buckled on the outside of the hose 7, and the upper end of the needle head protection cover 16 is sleeved on the lower end in the vertical direction of the infusion three-way valve 5.

[0027] In the embodiment of the present invention, in the connection between the bypass port of the infusion three-way valve 5 and the infusion hose 3, physical welding is adopted, so as to ensure that the product has no chemical adhesive.

[0028] In application, medical personnel use the support device 11 to perform puncture on the patient. The intravenous needle 4, along with the tubing 7, is inserted into the patient's vein through the guide slope 10 at the front end of the tubing 7. Blood returns rapidly through the perforation hole 8 on the intravenous needle 4 due to pressure changes in the sensitive blood return device 2, indicating accurate puncture. At this time, the medication in the infusion tubing 3 enters the patient's vein through the bypass port of the infusion tee 5 and the perforation hole 8 on the intravenous needle 4. During assembly, the anti-infection sheath 12 better assists in guiding and positioning the intravenous needle 4 through the silicone soft stopper 9, preventing the perforation hole 8 on the intravenous needle 4 from scratching the silicone soft stopper 9, and simultaneously helps the intravenous needle 4 accurately penetrate the tubing 7; outwards... Pull out the support 11 and needle hub 6. The intravenous needle 4 is pulled out from the tubing 7 and silicone plug 9. The needle tip of the intravenous needle 4 remains in the anti-infection sheath 12. When the connecting line 13 is pulled out through the notch 17 and tightened, when the connecting line 13 is pulled out further, the connecting line 13 will cause the intravenous needle 4 and the anti-infection sheath 12 to detach from the infusion tee 5. After the anti-infection sheath 12 is detached, because the connecting line 13 is set on the support 11 on the outside, the connecting line 13 will pull the anti-infection sheath 12 to tilt to one side. After tilting, the needle tip of the intravenous needle 4 will stick into the inner wall of the anti-infection sheath 12, thereby avoiding the needle tip of the intravenous needle 4 from scratching the operator and the recovery personnel when the intravenous needle 4 is pulled out.

[0029] The silicone soft stopper 9 automatically seals the vertical middle inner cavity of the infusion three-way valve 5. The medication in the infusion tubing 3 flows into the patient's vein through the bypass port of the infusion three-way valve 5 and the tubing 7 at the lower vertical end of the infusion three-way valve 5. At the same time, the front part of the tubing 7 remains in the patient's vein, and the rear part of the tubing 7 remains on the patient's arm. This not only greatly reduces the risk of blood clots forming and causing blockage of the metal intravenous needle 4 in the patient's vein, but also allows the tubing 7 to remain in the patient's vein for a relatively long time, reducing patient pain. It also prevents accidents caused by children or unconscious elderly people moving their arms and scratching the patient's vein. At the same time, it can effectively cooperate with the sensitive blood return device 2. The blood return information brought by the sensitive blood return device 2 can be clearly and conveniently seen through the fluid permeation hole 8 on the intravenous needle 4, which effectively improves the judgment rate of the correct insertion of the tubing intravenous needle 1 into the patient's vein.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A disposable sensitive blood return tubing intravenous needle, comprising a tubing intravenous needle and a sensitive blood return device, wherein the sensitive blood return device is connected to the tubing intravenous needle via an infusion tubing, characterized in that, The soft-tube venous needle consists of a venous needle, an infusion three-way connector, a needle holder, a soft tube, and a liquid-permeating hole. The infusion three-way connector is in an inverted "卜" shape. The needle holder is arranged at the upper end in the vertical direction of the infusion three-way connector. The upper end of the venous needle is fixed on the needle holder, and the lower end of the venous needle extends vertically downward to the outside of the lower end of the infusion three-way connector. The soft tube is wrapped around the lower part of the venous needle, and the upper end of the soft tube is hermetically fixed at the lower end in the vertical direction of the infusion three-way connector. The bypass port of the infusion three-way connector is connected to an infusion soft tube. The liquid-permeating hole is arranged on the side wall of the venous needle corresponding to the bypass port of the infusion three-way connector.

2. The disposable sensitive blood return tubular intravenous needle according to claim 1, characterized in that, In the soft-tube venous needle, a silica gel soft plug is further included. The silica gel soft plug is arranged inside the middle part in the vertical direction of the infusion three-way connector and is located above the bypass port of the infusion three-way connector.

3. The disposable sensitive blood return tubular intravenous needle according to claim 1, characterized in that, A guide slope is arranged at the lower end of the soft tube in the soft-tube venous needle.

4. The disposable sensitive blood return tubular intravenous needle according to claim 1, characterized in that, A support device is further included in the soft-tube venous needle. One end of the support device is fixed on the needle holder located at the upper end in the vertical direction of the infusion three-way connector.

5. The disposable sensitive blood return tubular intravenous needle according to claim 1 or 4, characterized in that, An anti-infection sheath, a connecting line, and a notch are further included in the soft-tube venous needle. The anti-infection sheath is arranged inside the vertical direction of the infusion three-way connector below the needle holder. One end of the connecting line is fixed on the support device connected to the needle holder as a whole, and the other end of the connecting line is fixed on the anti-infection sheath. The notch is arranged on the upper side wall in the vertical direction of the infusion three-way connector.

6. The disposable sensitive blood return tubular intravenous needle according to claim 1 or 2, characterized in that, An exhaust elimination plug is further included. The exhaust elimination plug is arranged at the three-way connection intersection of the infusion three-way connector. The upper part of the exhaust elimination plug is connected to the silica gel soft plug as a whole. The lower part of the exhaust elimination plug forms an inclined section downward along the upper edge of the bypass of the infusion three-way connector to expose the liquid-permeating hole.

7. The disposable sensitive blood return tubular intravenous needle according to claim 1, characterized in that, A needle head protection cover is further included in the soft-tube venous needle. The needle head protection cover is buckled on the outside of the soft tube, and the upper end of the needle head protection cover is sleeved on the lower end in the vertical direction of the infusion three-way connector.

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