Rotating assisted entry soft tube retention needle

Abstract

The utility model provides a kind of rotation type auxiliary soft tube indwelling needle, including indwelling soft tube component and puncture needle component, indwelling soft tube component includes front hose, transparent tee and rear hose, transparent tee front through orifice is connected with front hose, transparent tee rear through orifice is connected with rear hose, and elongated tube is connected in transparent tee side through orifice, isolation plug is provided in rear hose, puncture needle component includes steel needle base, inner core steel needle and needle handle, inner core steel needle and needle handle are fixedly connected on steel needle base, rear wall of rear hose is cut along front-rear direction and is provided with auxiliary needle-entering inclined plane, and auxiliary support inclined plane, which can be in contact with auxiliary needle-entering inclined plane, is additionally provided on the surface of steel needle base along the axial direction of inner core steel needle.The application is used, after seeing blood return when needle enters, only need to hold needle handle firmly and then rotate transparent tee, then push front hose forward, and finally withdraw inner core steel needle, so as to increase the success rate of puncture, reduce the pain and nursing workload of patients, and the operation is simple.

Description

Technical Field

[0001] This utility model relates to the field of medical supplies technology, specifically to a rotary auxiliary indwelling needle for inserting a flexible tube. Background Technology

[0002] In clinical practice, there are many patients who require frequent or long-term intravenous infusions. The use of indwelling needles can reduce the pain caused by repeated venous punctures for these patients, reduce damage to blood vessels, facilitate clinical medication and emergency medication for critically ill patients, improve the safety and convenience of intravenous therapy, and reduce the workload of nurses. Therefore, indwelling intravenous needles are widely used in clinical practice.

[0003] An indwelling intravenous catheter, also known as an intravenous cannula, consists primarily of a flexible catheter / cannula that can be left in a blood vessel and a stainless steel guide needle. During use, the guide needle and catheter are inserted together into the blood vessel. Once the catheter is fully inside the vessel, the guide needle is withdrawn, leaving only the flexible catheter in place for intravenous infusion.

[0004] The inventors of this application discovered in clinical nursing use that, with conventional indwelling needles, after blood return is observed after insertion, the indwelling needle needs to be pushed forward a bit more before the inner core needle is withdrawn and the tubing is pushed. However, in this procedure of "pushing the indwelling needle forward a bit after blood return is observed," there is a certain probability that the inner core needle of the indwelling needle will puncture a blood vessel, leading to insertion failure, increasing patient suffering, increasing nursing workload, and potentially causing nurse-patient conflicts. Utility Model Content

[0005] In response to the technical problem that when inserting a conventional indwelling needle, after "seeing blood return, the indwelling needle needs to be pushed forward a bit more," the inner steel needle of the indwelling needle may puncture a blood vessel, leading to insertion failure, increased patient suffering, and increased nursing workload, this utility model provides a rotary-assisted indwelling needle for inserting a flexible tube.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A rotary-type auxiliary indwelling catheter includes an indwelling catheter assembly and a puncture needle assembly. The indwelling catheter assembly includes a front catheter, a transparent three-way tube, and a rear catheter. The front port of the transparent three-way tube is connected to the front catheter, and the rear port of the transparent three-way tube is connected to the rear catheter. An extension tube is connected to the side port of the transparent three-way tube. An isolation plug is provided inside the rear catheter. The puncture needle assembly includes a steel needle base, an inner steel needle, and a needle holder. The inner steel needle and the needle holder are fixedly connected to the steel needle base. An auxiliary insertion bevel is cut on the rear side wall of the rear catheter along the front-back direction. An auxiliary support bevel is added to the surface of the steel needle base along the steel needle axis, which can contact and fit with the auxiliary insertion bevel.

[0008] Compared with the prior art, the rotary auxiliary indwelling needle provided by this utility model has an auxiliary needle insertion bevel cut along the front-to-back direction on the rear side wall of the rear tubing. An auxiliary support bevel is added along the needle axis on the surface of the needle base to correspond to and conform to the auxiliary needle insertion bevel. In use, the inner core needle is first exposed from the front end of the front tubing after penetrating the isolation plug for easy needle insertion. At this time, the auxiliary needle insertion bevel and the auxiliary support bevel are in contact. After needle insertion, blood return is observed, confirming that the inner core needle is inside the blood vessel. Then, the needle holder is secured to ensure the inner core... With the needle remaining in the blood vessel, rotate the transparent three-way stopcock around the inner core needle of the indwelling needle. This rotates the entire indwelling tubing assembly. Due to the height difference of the auxiliary support ramp, the entire indwelling tubing assembly automatically moves towards the needle tip while rotating. The front tubing within the assembly then enters the blood vessel along the inner core needle, completely enveloping the needle tip. Next, push the indwelling tubing assembly forward to allow the front tubing to smoothly enter the needle. Because only the front tubing (soft needle) enters the blood vessel, it will not puncture the blood vessel. Finally, simply withdraw the inner core needle. In summary, when using this indwelling needle, after observing blood return after insertion, there is no need to push the entire indwelling needle forward further. Simply stabilize the needle handle, rotate the transparent three-way stopcock, then push the front tubing of the indwelling tubing assembly forward, and finally withdraw the inner core needle. This increases the success rate of puncture, reduces patient pain and nursing workload, and is easy to operate.

[0009] Furthermore, the diameter of the front flexible tube gradually increases along the front-to-back direction.

[0010] Furthermore, the rear sidewall of the rear hose is provided with a thrust protrusion in the radial direction.

[0011] Furthermore, the surface of the needle holder is provided with several hand-held protrusions. Attached Figure Description

[0012] Figure 1 This is an exploded structural diagram of the rotary auxiliary indwelling needle for inserting the tubing provided by this utility model.

[0013] Figure 2 This is a diagram showing the usage process of the rotary auxiliary indwelling needle for tubing provided by this utility model.

[0014] In the diagram, 1. Indwelling tubing assembly; 11. Front tubing; 12. Transparent tee tube; 13. Rear tubing; 131. Auxiliary needle insertion bevel; 14. Extension tube; 15. Isolation plug; 16. Pushing protrusion; 2. Puncture needle assembly; 21. Steel needle base; 211. Auxiliary support bevel; 22. Inner core steel needle; 23. Needle handle; 231. Handling protrusion. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0016] In the description of this utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Please refer to Figure 1 and Figure 2As shown, this utility model provides a rotary auxiliary indwelling needle with a flexible tube, including an indwelling tube assembly 1 and a puncture needle assembly 2. The indwelling tube assembly 1 includes a front tube 11, a transparent three-way tube 12, and a rear tube 13. The front port of the transparent three-way tube 12 is connected to the front tube 11, and the rear port of the transparent three-way tube 12 is connected to the rear tube 13. An extension tube 14 is connected to the side port of the transparent three-way tube 12. The extension tube 14 is used to facilitate the entry of infusion fluid after puncture. An isolation plug 15 is provided inside the rear tube 13. The puncture needle assembly 2 includes a steel needle base 21, an inner steel needle 22, and a needle holder 23. The inner steel needle 21 and the needle holder 23 are fixedly connected to the steel needle base 21. In particular, the rear side wall of the rear tube 13 is cut with an auxiliary needle insertion slope 131 in the front-back direction. The surface of the steel needle base 21 is provided with an auxiliary support slope 211 along the steel needle axis, which can correspondingly contact and fit with the auxiliary needle insertion slope 131.

[0019] Compared with the prior art, the rotary auxiliary indwelling needle provided by this utility model has an auxiliary needle insertion bevel cut along the front-to-back direction on the rear side wall of the rear tubing. An auxiliary support bevel is added along the needle axis on the surface of the needle base to correspond to and conform to the auxiliary needle insertion bevel. In use, the inner core needle is first exposed from the front end of the front tubing after penetrating the isolation plug for easy needle insertion. At this time, the auxiliary needle insertion bevel and the auxiliary support bevel are in contact. After needle insertion, blood return is observed, confirming that the inner core needle is inside the blood vessel. Then, the needle holder is secured to ensure the inner core... With the needle remaining in the blood vessel, rotate the transparent three-way stopcock around the inner core needle of the indwelling needle. This rotates the entire indwelling tubing assembly. Due to the height difference of the auxiliary support ramp, the entire indwelling tubing assembly automatically moves towards the needle tip while rotating. The front tubing within the assembly then enters the blood vessel along the inner core needle, completely enveloping the needle tip. Next, push the indwelling tubing assembly forward to allow the front tubing to smoothly enter the needle. Because only the front tubing (soft needle) enters the blood vessel, it will not puncture the blood vessel. Finally, simply withdraw the inner core needle. In summary, when using this indwelling needle, after observing blood return after insertion, there is no need to push the entire indwelling needle forward further. Simply stabilize the needle handle, rotate the transparent three-way stopcock, then push the front tubing of the indwelling tubing assembly forward, and finally withdraw the inner core needle. This increases the success rate of puncture, reduces patient pain and nursing workload, and is easy to operate.

[0020] For a specific embodiment, please refer to Figure 1 As shown, the diameter of the front flexible tube 11 gradually increases in the front-to-back direction, that is, the diameter of the front flexible tube 11 becomes smaller towards the needle tip, which makes it easier for the front flexible tube to enter the blood vessel.

[0021] For a specific embodiment, please refer to Figure 1As shown, the rear sidewall of the rear hose 13 is provided with a radial push protrusion 16, which can be used to push the front hose in the indwelling hose assembly forward with the help of the push protrusion 16, so that the front hose can be smoothly inserted into the needle with the help of the push protrusion 16, which is convenient and practical.

[0022] For a specific embodiment, please refer to Figure 1 As shown, the surface of the needle holder 23 is provided with a plurality of hand grip protrusions 231, thereby allowing the surface of the needle holder 23 to be stably gripped by the hand grip protrusions 231, thus better securing the needle holder 23.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A rotary assisted indwelling catheter, comprising an indwelling catheter assembly (1) and a puncture needle assembly (2), wherein the indwelling catheter assembly (1) comprises a front catheter (11), a transparent three-way tube (12), and a rear catheter (13), the front port of the transparent three-way tube (12) being connected to the front catheter (11), the rear port of the transparent three-way tube (12) being connected to the rear catheter (13), an extension tube (14) being connected to the side port of the transparent three-way tube (12), and an isolation plug (15) being provided inside the rear catheter (13); the puncture needle assembly (2) comprises a steel needle base (21), an inner steel needle (22), and a needle holder (23), wherein the inner steel needle (22) and the needle holder (23) are fixedly connected to the steel needle base (21), characterized in that, The rear sidewall of the rear hose (13) is cut with an auxiliary needle inlet slope (131) in the front-back direction, and the surface of the steel needle base (21) is provided with an auxiliary support slope (211) that can contact and fit with the auxiliary needle inlet slope (131) in the axial direction of the steel needle.

2. The rotary auxiliary indwelling needle for tubing as described in claim 1, characterized in that, The diameter of the front hose (11) gradually increases along the front-to-back direction.

3. The rotary auxiliary indwelling needle for tubing as described in claim 1, characterized in that, The rear sidewall of the rear hose (13) is provided with a thrust protrusion (16) in the radial direction.

4. The rotary auxiliary indwelling needle for tubing as described in claim 1, characterized in that, The surface of the needle holder (23) is provided with several hand-held protrusions (231).

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