CN223504626U - A positive pressure intravenous indwelling needle - Google Patents

Abstract

This utility model discloses a positive pressure intravenous indwelling needle, including a puncture needle, a drainage tube, and a three-way connector. The puncture needle is connected to the three-way connector via the drainage tube. A sterile protective film is attached to the puncture needle and the drainage tube. The three-way connector is equipped with two sets of restraint-type fixation components, which are respectively installed at the upper and lower ends of the three-way connector. Each restraint-type fixation component includes a first sleeve, a winding rod, a restraint strap, a second sleeve, and an adhesive winding rod. The first sleeve is fixed to one side of the three-way connector and has an outlet at its lower end. The winding rod is rotatably installed inside the first sleeve. The restraint strap is wrapped around the winding rod, with its end extending from the outlet and connecting to the adhesive winding rod. The adhesive winding rod is rotatably installed inside the second sleeve. The restraint-type fixation components designed in this utility model can quickly and efficiently fix the three-way connector of the intravenous indwelling needle, improving the stability of the intravenous indwelling needle during use.

Description

Positive pressure type venous indwelling needle

Technical Field

The utility model relates to the technical field of venous indwelling needles, in particular to a positive pressure type venous indwelling needle.

Background

A positive pressure type venous indwelling needle, which is a medical device for insertion into a patient's blood vessel for infusion, blood collection or administration, is generally composed of an elongated plastic tube and a sharp needle, is designed so that a medical person can conveniently access a vein when the patient needs to infuse for a long period of time or repeatedly collect blood, the indwelling needle is usually inserted into a vein of a patient, and the medicament or liquid is conveyed into the blood circulation system of the patient through a pipeline, so that the instrument is widely applied in medical practice, is particularly important for patients needing long-term transfusion or frequent blood sampling, and reduces the pain of the patients to a great extent.

However, the existing positive pressure type venous indwelling needle has the following problems that after the venous indwelling needle is in puncture installation, medical staff can usually fix the indwelling needle by using an indwelling needle fixing sterile protective film, and a three-way connector at the tail of the indwelling needle is difficult to fix due to the fact that the volume is relatively large and the sterile protective film is adopted, so that the three-way connector is fixed and bound by using an adhesive tape, in the practical process, a patient collides with the three-way connector or sweat is immersed in the three-way connector when moving, the adhesive tape on the three-way connector is easy to fall off, the fixing effect of the whole venous indwelling needle is affected, and frequent replacement operation is required. For this purpose, a corresponding technical solution is required to be designed to solve the existing technical problems.

Disclosure of utility model

The utility model aims to provide a positive pressure type venous indwelling needle, which solves the technical problems that when the venous indwelling needle is in puncture installation, medical staff usually uses an indwelling needle to fix an indwelling needle by using a sterile protection film, and a three-way connector at the tail of the indwelling needle is difficult to fix by adopting the sterile protection film due to relatively large volume, so that the three-way connector is fixed and bound by adopting an adhesive tape, but in the practical process, a patient collides with the three-way connector or is immersed by sweat during the action, the adhesive tape on the three-way connector is easy to fall off, the fixing effect of the whole venous indwelling needle is affected, and frequent replacement operation is required.

The positive pressure type venous indwelling needle comprises a puncture needle head, a liquid guide tube and a three-way joint, wherein the puncture needle head is connected with the three-way joint through the liquid guide tube, sterile protection films are attached to the puncture needle head and the liquid guide tube, two groups of binding type fixing components are arranged on the three-way joint respectively, the binding type fixing components comprise a sleeve I, a winding rod, a binding belt, a sleeve II and an adhesive winding rod, the sleeve I is fixed on one side of the three-way joint, an outlet is formed in the lower end of the sleeve I, the winding rod is rotatably arranged in the sleeve I, the binding belt is wound on the winding rod, the end of the binding belt is led out of the outlet and is connected with the adhesive winding rod, the adhesive winding rod is rotatably arranged in the sleeve II, the sleeve II is fixed on the other side of the three-way joint, a guide inlet is formed in the lower side of the sleeve II, the adhesive winding rod is of a three-section structure and is respectively provided with a floating pad, a rotating rod and a locking head, the floating pad is rotatably arranged on the upper inner wall of the sleeve II, and the two ends of the floating pad are respectively connected with the floating pad and the locking head are respectively.

As a preferable mode of the utility model, a socket is arranged at one end of the second sleeve, a plurality of groups of limit notches are formed in the inner wall of the socket in a machining mode, and the plurality of groups of limit notches are distributed annularly and uniformly.

In a preferred embodiment of the present utility model, the floating pad is made of a rubber material and is formed into a laminated structure by surface processing.

As a preferred mode of the present utility model, the rotating rod comprises a rod body and a transparent colloid arranged on the surface of the rod body, and the diameter of the rotating rod is smaller than that of the floating pad.

As a preferable mode of the utility model, the locking head comprises a disc body, limiting convex blocks and a screwing head, wherein the disc body is fixed at the upper end of the rod body, the limiting convex blocks are respectively provided with a plurality of groups and uniformly distributed on the periphery of the disc body, the limiting convex blocks are matched with limiting notch for use, and the screwing head is fixed on the disc body.

Compared with the prior art, the utility model has the following beneficial effects:

1. This scheme has improved the fixed mode of current malleation formula vein keep somewhere the needle, has designed the fixed subassembly of constraint to the tee bend joint department of vein keep somewhere the needle, and this fixed subassembly of constraint simple structure need not to use the sticky tape to fix, can carry out winding formula constraint processing according to the size in tee bend joint place to can adjust the elasticity as required, improve the fixed effect of tee bend joint of vein keep somewhere the needle greatly, reduce because tee bend joint collides or sweat soaks the sticky tape and leads to the possibility that vein keep somewhere the needle stability decline.

2. The constraint type fixing component designed by the scheme can be used for carrying out rapid and efficient fixing treatment on the three-way joint of the venous indwelling needle, so that the stability of the venous indwelling needle in the using process is improved.

Drawings

FIG. 1 is an overall block diagram of the present utility model;

FIG. 2 is a block diagram of a tethered fastening assembly of the present utility model;

fig. 3 is a view of a sleeve two-split state structure according to the present utility model.

In the figure, 1, a puncture needle head, 2, a catheter, 3, a three-way joint, 4, an attached sterile protective film, 5, a sleeve I, 6, a winding rod, 7, a binding belt, 8, a sleeve II, 9, an adhesive winding rod, 10, an outgoing port, 11, an incoming port, 12, a floating pad, 13, a rotating rod, 14, a locking head, 15, a socket, 16, a limiting notch, 17, a rod body, 18, a transparent colloid, 19, a disc body, 20, a limiting lug, 21 and a screwing head.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the utility model provides a positive pressure type venous indwelling needle, which comprises a puncture needle head 1, a liquid guide tube 2 and a three-way joint 3, wherein the puncture needle head 1 is connected with the three-way joint 3 through the liquid guide tube 2, a sterile protection film 4 is attached to the puncture needle head 1 and the liquid guide tube 2, two groups of binding fixing components are respectively arranged at the upper end and the lower end of the three-way joint 3, each binding fixing component comprises a sleeve I5, a winding rod 6, a binding belt 7, a sleeve II 8 and an adhesive winding rod 9, the sleeve I5 is fixed on one side of the three-way joint 3, the lower end of the sleeve I is provided with an outlet 10, the winding rod 6 is rotatably arranged in the sleeve I5, the binding belt 7 is wound on the winding rod 6, the end of the binding belt is led out of the outlet 10 and is connected with the adhesive winding rod 9, the adhesive winding rod 9 is rotatably arranged in the sleeve II 8, the sleeve II 8 is fixed on the other side of the three-way joint 3, the lower side of the three-way joint 3 is provided with an inlet 11, the adhesive winding rod 9 is respectively provided with a three-section structure, the floating pad 12, the rotating rod 13 and the floating pad 12 are respectively arranged at the two ends of the floating pad 12 and the floating pad 12 are respectively connected with the two ends of the floating pad 12 and the floating pad 12 are respectively arranged at the two ends of the rotating head 13.

Further, as shown in fig. 3, a socket 15 is formed at one end of the second sleeve 8, a plurality of groups of limiting notches 16 are formed in the inner wall of the socket 15, the plurality of groups of limiting notches 16 are annularly and uniformly distributed, and the locking head 14 and the rotating rod 13 can be locked by matching with the limiting protruding blocks 20.

Further, as shown in fig. 3, the floating pad 12 is made of rubber material and is formed into a laminated structure by surface processing, so that floating adjustment of the rotating rod 13 is facilitated.

Further, as shown in fig. 3, the rotating rod 13 includes a rod body 17 and a transparent colloid 18 disposed on the surface of the rod body 17, the diameter of the rotating rod 13 is smaller than that of the floating pad 12, and the rotating rod 13 binds and winds the binding band 7 in the winding process.

Specifically, the locking head 14 comprises a disc 19, a limiting lug 20 and a screwing head 21, the disc 19 is fixed at the upper end of the rod body 17, the limiting lug 20 is divided into a plurality of groups and evenly distributed on the periphery of the disc 19, the limiting lug 20 is matched with the limiting notch 16 for use, the screwing head 21 is fixed on the disc 19, and medical staff can lock and unlock the rotating rod 13 through the locking head 14.

When the venous indwelling needle is used, after the venous indwelling needle is required to be fixed after being punctured, medical staff can attach the sterile protective film 4 to the puncture needle head 1 and the catheter 2 to fix, then pull the end part of the binding belt 7, extend out of the sleeve I5 and wind the end part of the binding belt 7 on a puncture part, such as an arm, a leg or a head, and adhere the end part of the binding belt 7 to the transparent colloid 18, at the moment, the medical staff pulls the locking head 14 outwards to enable the limiting lug 20 to be separated from the limiting notch 16 and rotate the locking head 14, wind and tighten the binding belt 7 by utilizing the rotating rod 13, and after the fixing is finished, the locking head 14 is reset and the limiting lug 20 is inserted into the corresponding limiting notch 16, so that the purpose of efficiently fixing the three-way connector 3 is achieved.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," "fourth" may explicitly or implicitly include at least one such feature.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, or indirectly connected through an intermediate medium, and may be a communication between two elements or an interaction relationship between two elements, unless explicitly specified otherwise, and it will be understood by those of ordinary skill in the art that the above terms are in specific terms of the present utility model as appropriate.

It should be noted that the above-mentioned embodiments are merely preferred embodiments of the present utility model, and the present utility model is not limited thereto, but may be modified or substituted for some of the technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (5)

1. The utility model provides a positive pressure formula vein keep somewhere needle, includes puncture syringe needle (1), catheter (2) and tee bend joint (3), puncture syringe needle (1) is connected with tee bend joint (3) through catheter (2), it is with aseptic protection film (4) to paste on puncture syringe needle (1), catheter (2), tee bend joint (3) are installed two sets of constraint fixed subassembly, two sets of constraint fixed subassembly install respectively in tee bend joint (3) upper and lower extreme, constraint fixed subassembly includes sleeve one (5), rolling pole (6), constraint area (7), sleeve two (8) and adhesion pole (9), sleeve one (5) are fixed in one side and the lower extreme of tee bend joint (3) have been seted up and have been led out mouth (10), rolling pole (6) rotate and install in sleeve one (5), constraint area (7) twine on rolling pole (6) and the tip is led out and be connected with adhesion pole (9) from leading out mouth (10), adhesion pole (9) rotate and set up in sleeve two (8) and adhesion pole (9) are provided with one side and are three wherein, sleeve one side (8) are fixed in three side (8) and are connected with one another side (12) and are provided with three-way joint (3) and are provided with one piece of structures respectively The floating gasket (12) is rotatably arranged on the inner wall of the sleeve II (8), and the upper end and the lower end of the rotating rod (13) are respectively connected with the floating gasket (12) and the locking head (14).

2. The positive pressure type venous indwelling needle according to claim 1, wherein a socket (15) is formed at one end of the second sleeve (8), a plurality of groups of limiting notches (16) are formed in the inner wall of the socket (15), and the limiting notches (16) are uniformly distributed in a ring shape.

3. The positive pressure type venous indwelling needle according to claim 1, in which said floating pad (12) is made of rubber material and is formed by surface processing into a laminated structure.

4. A positive pressure type venous indwelling needle according to claim 3, in which the rotating rod (13) comprises a rod body (17) and a transparent colloid (18) arranged on the surface of the rod body (17), and the diameter of the rotating rod (13) is smaller than that of the floating pad (12).

5. The positive pressure type venous indwelling needle according to claim 2, wherein the locking head (14) comprises a disc body (19), limiting lugs (20) and a screwing head (21), the disc body (19) is fixed at the upper end of the rod body (17), the limiting lugs (20) are distributed on the periphery of the disc body (19) in a plurality of groups, the limiting lugs (20) are matched with limiting notches (16) to be used, and the screwing head (21) is fixed on the disc body (19).