CN210301905U

CN210301905U - Anti-reflux remaining needle

Info

Publication number: CN210301905U
Application number: CN201822196027.9U
Authority: CN
Inventors: 邢洪洗; 肖卫涛
Original assignee: BEIJING FERT TECHNOLOGY CO LTD
Current assignee: BEIJING FERT TECHNOLOGY CO LTD
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2020-04-14
Anticipated expiration: 2028-12-26

Abstract

The utility model provides a prevent keeping somewhere needle against current, including heparin cap (1) and needle tubing (2) through extension pipe (4) connection, pipe (3), extension pipe (4), keep apart stopper (5) and single guide liquid membrane (6), inside pipe (3) is arranged in to needle tubing (2) part, one end stretches out the pipe (3) outside, pipe (3) inside has the cavity, keep apart stopper (5) and set up in the cavity, the one end fixed connection of pipe (3) is to pipe seat (7), the one end fixed connection of needle tubing (2) is to needle file (8), the downside of heparin cap (1) and the upper portion side-mounting tee bend (9) of extension pipe (4), tee bend (9) grafting or threaded connection heparin cap (1), extension pipe (4) middle part is fixed to be set up and ends flow clamp (10), prevent keeping somewhere the fixed iron core in the needle outside against current, and cladding sheath, one-way guide liquid membrane (6) sets up in the one end and pipe seat (7) of extension pipe (4), is welded with the conduit seat (7).

Description

Anti-reflux remaining needle

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an anti-reflux indwelling needle.

Background

The venous indwelling needle is also called as a static trocar and comprises a stainless steel needle core, a soft outer sleeve and a plastic needle seat, wherein the outer sleeve and the needle core are simultaneously punctured into a blood vessel during puncture, and after the sleeve is sent into the blood vessel, the needle core is drawn out, and only the soft outer sleeve is left in the blood vessel for transfusion or other operations. The indwelling needle is simple to operate, relieves the pain of a patient caused by repeated puncture, protects blood vessels, reduces liquid extravasation, ensures reasonable medication time, provides convenience for blood transfusion and fluid infusion, reserves an open venous channel, is convenient for rescue work, reduces the workload of nursing staff to a great extent, and is suitable for patients who are transfused for a long time, old patients and patients without independent consciousness, especially critical patients.

The common indwelling needle on the market is a medical apparatus which is very commonly used in medical treatment such as transfusion, blood transfusion and the like, the anti-reflux indwelling needle is a novel product of the indwelling needle, and due to the special design of the anti-reflux valve, the anti-reflux indwelling needle has the advantages of preventing blood from flowing back and avoiding blocking the indwelling needle, but the existing anti-reflux indwelling needle has some inconveniences and potential safety hazards in the using process, for example, when the indwelling needle is used in a general hospital at present, a venous needle is threaded on a heparin cap for transfusion, when the needle is pulled out, the indwelling needle is washed by heparin, and when the needle is withdrawn, the needle is withdrawn while liquid is pushed, so that the blood is prevented from flowing back to the indwelling needle to block a hose; still other indwelling needles are connected to the infusion set by a connector during use, but there is an accidental disconnection of the connector which can be life-threatening to the patient.

Through the understanding and analysis of the existing products, most of the remaining needles in the market have the following disadvantages: the operation process of the nurse is complicated, and the hose is easy to block during blood returning. Therefore, a new anti-reflux indwelling needle needs to be designed to solve the above problems and improve the practicability of the product performance test. Safety protection is added, operation steps are simplified, and cost is saved.

Disclosure of Invention

In order to overcome the problems in the prior art, the utility model provides a keep somewhere needle against current.

An object of the utility model is to provide a needle is kept somewhere to anti-reflux, include: heparin cap (1), needle tubing (2), pipe (3), extension pipe (4), isolation stopper (5) and one-way liquid guide membrane (6), heparin cap (1) with needle tubing (2) pass through extension pipe (4) are connected, needle tubing (2) part is arranged in inside pipe (3), and one end stretches out pipe (3) outside, pipe (3) inside has the cavity, isolation stopper (5) set up in the cavity, one-way liquid guide membrane (6) set up the one end of extension pipe (4), and the shutoff the one end of extension pipe (4).

Preferably, the needle cannula is divided into an inner needle cannula and an outer needle cannula.

Preferably, one end of the catheter (3) is fixedly connected to the catheter hub (7).

Preferably, one end of the needle tube is fixedly connected to the needle seat (8).

Preferably, a tee joint (9) is installed on the lower side of the heparin cap (1) and the upper side of the extension tube (4), and the tee joint (9) is connected with the heparin cap (1) in an inserting or threaded mode.

Preferably, the middle part of the extension pipe (4) is fixedly provided with a flow stopping clamp (10).

Preferably, the iron core is fixed outside the anti-reflux indwelling needle and covers the sheath.

Preferably, the single-direction liquid guide film (6) is arranged in an inner hole of the catheter seat (7), and the single-direction liquid guide film (6) and the catheter seat (7) are connected together through welding.

The beneficial effects of the utility model reside in that: one-way drain membrane structure of ingenious utilization, fully guarantee that the liquid medicine instills the passageway and can not appear blocking phenomenon in the infusion process, guarantee the instillation speed and the smoothness nature of liquid medicine, and can accomplish at every turn the infusion and press from both sides tightly the miniature space that forms at extension outside of tubes wall and each partition inner wall handing-over position at multichannel extension pipe after suspending through the liquid stopping clamp, form micropore passageway between extension pipe and keep somewhere needle file cavity bottom, and produce the malleation cavity at extension pipe upper portion and middle part through the one-way liquid guide membrane, utilize the liquid medicine of wherein storage to prevent blood backward flow effectively and reliably through the slow infiltration of micropore passageway, thereby reach the purpose of preventing the thrombus, it is more convenient to operate.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Brief description of the drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. The objects and features of the present invention will become more apparent in view of the following description taken in conjunction with the accompanying drawings, in which:

fig. 1 is a general structural view of an anti-reflux indwelling needle according to an embodiment of the present invention.

Fig. 2 is a view of a one-way liquid guide membrane and catheter hub welded structure according to an embodiment of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings, but the present invention is not limited thereto.

Referring to fig. 1, the anti-reflux indwelling needle comprises a heparin cap 1, a needle tube 2, a catheter 3, an extension tube 4, an isolation plug 5 and a single-direction liquid guide membrane 6, wherein the heparin cap 1 is connected with the needle tube 2 through the extension tube 4, the needle tube 2 is partially arranged in the catheter 3, one end of the needle tube extends out of the catheter 3, a cavity is formed in the catheter 3, the isolation plug 5 is arranged in the cavity, and the single-direction liquid guide membrane 6 is arranged at one end of the extension tube 4 and blocks one end of the extension tube 4. The needle tube is divided into an inner needle tube and an outer needle tube, and one end of the catheter 3 is fixedly connected to the catheter holder 7. One end of the barrel is fixedly connected to a needle hub 8. The lateral surfaces of the lower side of the heparin cap 1 and the upper part of the extension tube 4 are provided with a tee 9, and the tee 9 is spliced or in threaded connection with the heparin cap 1, so that the administration in the surgical anesthesia or transfusion process is facilitated. The middle part of the extension tube 4 is fixedly provided with a flow stopping clamp 10. The iron core is fixed on the outer side of the anti-reflux indwelling needle and is coated with the sheath, so that the service life of the whole indwelling needle is prolonged.

Referring to fig. 2, the one-way liquid guide film 6 is arranged in the inner hole of the catheter holder 7, and the one-way liquid guide film 6 and the catheter holder 7 are welded together through welding. The liquid can pass through the one-way liquid guide film depending on the liquid gravity during transfusion, when the transfusion is finished, the blood in the blood vessel of the human body has the tendency of blood return under pressure, and the one-way liquid guide film is unidirectional, so that the blood return is inhibited to a certain extent.

The working principle of the anti-reflux remaining needle is as follows:

in clinical application, the indwelling needle is connected with an infusion pipeline, so that liquid medicine enters an inner cavity of the indwelling needle, gas is exhausted, the indwelling needle protective cap is rotated and taken down, the indwelling needle catheter is punctured percutaneously and is sent into a venous blood vessel under the guiding action of the puncture needle, and an infusion channel is established. After the transfusion is finished, only 5ml of physiological saline needs to be used for sealing the tube once, the simple tube sealing operation ensures the night sleeping quality of the patient, improves the satisfaction degree of the patient, and reduces the workload for the nursing worker.

This embodiment utilizes one-way drain membrane structure, the phenomenon of blocking can not appear in the liquid medicine instillation passageway in the fully assurance infusion process, guarantee the instillation speed and the smoothness nature of liquid medicine, and can accomplish at every turn the infusion and press from both sides tightly the miniature space that forms at extension outside of tubes wall and each partition inner wall handing-over position in the multichannel extension tube is tight through the liquid stopping clamp, form micropore passageway between extension tube and lieing in needle file cavity bottom, and produce the malleation cavity at extension tube upper portion and middle part through the one-way liquid guide membrane, utilize the liquid medicine of wherein storage to prevent blood backward flow effectively and reliably through the slow infiltration of micropore passageway, thereby reach the mesh of preventing the thrombus, it is more convenient to operate.

The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by applying specific examples, and the descriptions of the above embodiments are only applicable to help understanding the principles of the embodiments of the present invention; meanwhile, the detailed description and the application scope of the embodiments of the present invention can be changed by those skilled in the art, and in summary, the content of the present description should not be construed as limiting the present invention.

Claims

1. An anti-reflux remaining needle is characterized in that: including heparin cap (1), needle tubing (2), pipe (3), extension pipe (4), isolation stopper (5) and one-way liquid guide membrane (6), heparin cap (1) with needle tubing (2) pass through extension pipe (4) are connected, needle tubing (2) part is arranged in inside pipe (3), one end stretches out pipe (3) outside, pipe (3) inside has the cavity, isolation stopper (5) set up in the cavity, one-way liquid guide membrane (6) set up the one end of extension pipe (4), and the shutoff the one end of extension pipe (4).

2. The anti-reflux indwelling needle according to claim 1, wherein: the needle tube is divided into an inner needle tube and an outer needle tube.

3. The anti-reflux indwelling needle according to claim 1, wherein: one end of the conduit (3) is fixedly connected to the conduit seat (7).

4. The anti-reflux indwelling needle according to claim 1, wherein: one end of the needle tube (2) is fixedly connected to the needle seat (8).

5. The anti-reflux indwelling needle according to claim 1, wherein: the lower side of the heparin cap (1) and the upper side face of the extension tube (4) are provided with a tee joint (9), and the tee joint (9) is spliced or in threaded connection with the heparin cap (1).

6. The anti-reflux indwelling needle according to claim 1, wherein: the middle part of the extension pipe (4) is fixedly provided with a flow stopping clamp (10).

7. The anti-reflux indwelling needle according to claim 1, wherein: and an iron core is fixed on the outer side of the anti-reflux remaining needle and is coated with a sheath.

8. The anti-reflux indwelling needle according to claim 1, wherein: the single-direction liquid guide film (6) is arranged in an inner hole of the catheter seat (7), and the single-direction liquid guide film (6) and the catheter seat (7) are connected together through welding.