CN212699928U - Flat pressure joint vein indwelling needle - Google Patents

Abstract

The utility model discloses a venous indwelling needle with a flat pressing joint, which comprises a needle tube sheath, a catheter component, a needle tube component, a flat pressing joint component and the like; the flat pressing joint component comprises a connector, a guide ring is arranged in one end of the connector, the guide ring is sleeved on one end of a silica gel spring, a joint is inserted in the silica gel spring and is connected with the inside of the other end of the connector, and a luer joint at the other end of the joint is connected with a long catheter connecting seat. The infusion joint interface adopts a needleless design; the infusion joint is of a balanced pressure structure, so that the constant pressure effect when the joint is disconnected after infusion is finished is realized, and the risk of catheter blockage caused by blood backflow is reduced; the infusion joint internally comprises an independent and vertical liquid passage which is not contacted with the inner wall of the shell during infusion, so that the tube washing is more thorough; the dead space volume is extremely small, and the liquid retention is reduced; the internal catheter of the connector is sealed by the silica gel spring after disconnection, so that bacteria can be effectively isolated and infection can be prevented, the connector is sealed in a disconnection state, and microorganisms cannot enter the cavity.

Description

Flat pressure joint vein indwelling needle

Technical Field

The utility model relates to a medical instrument used for vein treatment, in particular to a flat pressure joint vein indwelling needle.

Background

At present, a heparin cap indwelling needle is generally used in the market, during indwelling, the heparin cap needs to be punctured every time of transfusion, and rubber is easy to fall off due to repeated puncturing for many times, so that foreign matters block the tube; the scalp needle of the transfusion device is required to be connected in the transfusion process, so that the occupational exposure opportunities of nursing staff stabbed by the needle point and the like are increased. Meanwhile, the heparin cap belongs to a negative pressure connector, and liquid and blood can flow back into the remaining needle at the moment of disconnection of the needle tip of the infusion apparatus and the heparin cap, so that a specific tube sealing method is required to prevent backflow, and the operation is complex.

The other type of the positive pressure joint indwelling needle used in the market is a positive pressure joint indwelling needle, the joint part is an opaque structure, the internal condition of the joint cannot be observed, whether liquid medicine and bloodstain are washed clean or not can not be directly confirmed in the process of flushing the tube, and infection is easy to occur; the inner part adopts a spring mechanical structure, so that faults are easy to occur, and the retention time is short; moreover, the interior contains metal, which can interfere with X-ray examination.

Disclosure of Invention

A brief summary of the present invention is provided below in order to provide a basic understanding of some aspects of the present invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.

The utility model aims at providing a flat pressing joint vein indwelling needle which has simple structure, convenient use, safety and reliability.

The purpose of the utility model is realized through the following technical scheme: a flat pressure joint venous indwelling needle comprises a needle tube sheath, a needle tube component, a long needle tube component, a flat pressure joint component, a sliding clamping plate and an end cap;

the catheter component comprises a catheter, wherein one end of the catheter is provided with a metal wedge, the catheter penetrates into the three-way catheter seat, the metal wedge is plugged into a cavity at one end of the three-way catheter seat, and the other end of the three-way catheter seat is provided with an isolation plug;

the needle tube component comprises a notch needle tube, the notch needle tube penetrates into the catheter, one end of the notch needle tube is connected with a notch needle base, and the notch needle base is connected with the other end of the three-way catheter base;

the long catheter component consists of a long catheter and a long catheter connecting seat;

the third end of a three-way catheter seat in the catheter assembly is connected with the flat compression joint assembly through a long catheter and a long catheter connecting seat end cap, and a sliding clamping plate is arranged on the long catheter;

the flat pressing joint component comprises a connector, a guide ring is arranged in one end of the connector, the guide ring is sleeved on one end of a silica gel spring, a joint is inserted in the silica gel spring and is connected with the inside of the other end of the connector, and a luer joint at the other end of the joint is connected with a long catheter connecting seat.

The utility model discloses a further improvement lies in: the long catheter connecting seat is of a basic type or a three-fork type.

The utility model discloses a further improvement lies in: the joint material is transparent grease-resistant PC, the silica gel spring material is transparent organic silicon, the guide ring material is colored POM plastic, and the interface material is transparent PC.

The utility model has the advantages that: the utility model replaces the balance pressure separation membrane transfusion joint of a heparin cap. The infusion connector interface adopts a needleless design, and the infusion connector interface is used without connecting a scalp needle and only by connecting the female end of the connector with the male end of the luer connector of the infusion apparatus. The infusion connector is of a balanced pressure structure, a catheter and a silica gel spring inside the connector form a diaphragm structure, the constant pressure effect when the connector is disconnected after infusion is completed is achieved, and the risk of catheter blockage caused by blood backflow is reduced. The infusion connector internally comprises an independent and vertical liquid passage, when in infusion, the connector is activated, liquid medicine directly flows into the liquid passage through the luer connector, the process is not contacted with the inner wall of the shell, and the tube washing is more thorough; extremely small dead space volume (0.05 ml) to reduce liquid retention; after disconnection, the catheter in the connector is sealed by the silica gel spring, the residual amount of liquid in the catheter is small, double sealing is formed between the catheter and the silica gel spring, bacteria are effectively isolated and infection is prevented, the connector is sealed in a disconnection state, and microorganisms cannot enter the cavity. The transfusion connector body is a transparent shell, so that the transfusion and pipe flushing conditions are easy to observe; the metal is not contained, and the X-ray inspection is not influenced; the surface of the negative end of the joint is smooth, and the disinfection is convenient.

Description of the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a catheter assembly;

FIG. 3 is a schematic view of a needle cannula assembly;

FIG. 4 is a schematic structural view of a flat compression joint assembly;

FIG. 5 is a schematic view of a flat compression fitting assembly connecting a basic elongated conduit coupling base;

reference numbers in the figures: the device comprises a needle tube sheath 1, a catheter component I, a needle tube component II, a flat pressing joint component III, a catheter 2, a metal wedge 3, a three-way catheter seat 4, an isolating plug 5, a notch needle tube 6, a notch needle seat 7, a sliding clamping plate 8, a long catheter 9, a basic long catheter connecting seat 10, a joint 11, a silica gel spring 12, a guide ring 13, a connector 14, an end cap 15 and a trident long catheter connecting seat 16.

The specific implementation mode is as follows:

in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Elements and features described in one embodiment of the invention may be combined with elements and features shown in one or more other embodiments. It should be noted that the illustration omits illustration and description of components and processes known to those of ordinary skill in the art that are not pertinent to the present invention for the sake of clarity. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In order to make the technical advantages of the embodiments more apparent, the following detailed description of the present invention is provided with reference to the accompanying drawings.

In the description of the present invention, it is to be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "transmitting" are to be construed broadly, e.g., as meaning either a fixed connection, a releasable connection, or an integral connection; the two components can be connected mechanically or electrically, directly or through an intermediate medium, or the two components can be communicated with each other. The transmission may be of gas pressure or of electrical data information. The specific meaning of the above terms in the present invention can be understood in terms of specific situations by those of ordinary skill in the art.

In the following detailed description of the embodiments, features of the embodiments may be combined with each other.

As shown in fig. 1 to 5, the implementation scheme provided by the present embodiment is a flat compression joint venous indwelling needle, which comprises a needle tube sheath 1, a catheter component i, a needle tube component ii, a long catheter component, a sliding clamping plate, an end cap and a flat compression joint component iii; the catheter component I comprises a catheter 2, one end of the catheter 2 is provided with a metal wedge 3, the catheter 2 penetrates into a three-way catheter seat 4, the metal wedge 3 is plugged into a cavity at one end in the three-way catheter seat 4, and the other end of the three-way catheter seat 4 is provided with an isolating plug 5; the needle tube component II comprises a notch needle tube 6, the notch needle tube 6 penetrates into the catheter 2, one end of the notch needle tube 6 is connected with a notch needle base 7, and the notch needle base 7 is connected with the other end of the three-way catheter base 4; the third end of a three-way conduit seat 4 in the conduit assembly I is connected with the flat pressing joint assembly through a long conduit 9 and a long conduit connecting seat, and the long conduit 9 is provided with a sliding clamping plate 8; the long catheter connecting seat is a basic long catheter connecting seat 10 or a three-fork long catheter connecting seat 16, and the third end of the three-fork long catheter connecting seat 16 is provided with an end cap 15.

The flat pressing joint component III comprises a joint 14, a guide ring 13 is arranged in one end of the joint 14, the guide ring 13 is sleeved on one end of a silica gel spring 12, a joint 11 is inserted in the silica gel spring 12, the joint 11 is connected with the inner part of the other end of the joint 14, and a luer joint at the other end of the joint 11 is connected with a long catheter connecting seat.

The material of the joint 11 is transparent grease-resistant PC, the material of the silica gel spring 12 is transparent organic silicon, the material of the guide ring 13 is colored POM plastic, and the material of the interface 14 is transparent PC.

During infusion, the luer connector is screwed into the flat pressing connector interface 14, the guide ring 13 moves backwards, the silica gel spring 12 is compressed and contracted, the end face moves backwards, the catheter at the front end of the connector 11 pierces the end face of the silica gel spring 12 through a preformed hole in the end face of the silica gel spring 12 and is connected with the luer connector, a liquid inlet hole in the side face of the catheter at the front end of the connector 11 enters the interior of a luer connector pipeline, the luer connector, the catheter at the front end of the connector 11 and the end face of the silica gel spring 12 form a liquid inlet passage, and liquid flows into the long catheter connecting seat through the liquid. When the connector is disconnected, the luer connector is screwed off from the connector 14, the guide ring 13 and the silica gel spring 12 are rebounded by the elasticity of the silica gel spring 12, the guide pipe at the front end of the connector 11 exits from the luer connector and the end face preformed hole of the silica gel spring 12 and completely enters the silica gel spring 12, the liquid inlet hole in the side face of the guide pipe at the front end of the connector 11 is sealed by the silica gel spring 12, and the end face preformed hole of the silica gel spring 12 is closed.

The use method of the venous indwelling needle with the flat pressing joint comprises the following steps: 1. exhausting the infusion apparatus; 2. opening the package of the venous indwelling needle of the flat pressing joint; 3. taking down the scalp needle of the vented infusion apparatus, jacking the scalp needle into the interface end of the flat pressing joint by using the nipple of the infusion apparatus, screwing the scalp needle clockwise, and slightly pulling the scalp needle backwards to ensure that the scalp needle and the nipple are tightly connected; 4. opening the infusion apparatus clamp, and exhausting the remaining needle of the flat pressing joint; 5. the air is ensured to be discharged, and the remaining needle puncture can be carried out; 6. after infusion is finished, the venous indwelling needle of the flat pressure connector needs to be separated from the infusion apparatus, when the venous indwelling needle is separated from the infusion apparatus, the flow speed of liquid is adjusted to be maximum, the nipple of the infusion apparatus is pulled out after being rotated anticlockwise, and then tube sealing operation is carried out; 7. in the next day of transfusion, the mouth-piece is sterilized by iodine or alcohol, and then the nipple of the transfusion device is connected with the flat-pressing connector to perform transfusion (the same method as the third method).

Finally, it should be noted that: although the present invention and its advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims. Moreover, the scope of the present invention is not intended to be limited to the particular embodiments of the process, machine, means, methods and steps described in the specification. As one of ordinary skill in the art will readily appreciate from the disclosure of the present invention, processes, machines, means, methods, or steps, presently existing or later to be developed that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present invention. Accordingly, the appended claims are intended to include within their scope such processes, devices, means, methods, or steps.

Claims (3)

1. The utility model provides a flat pressure connects vein and keeps somewhere needle which characterized in that: comprises a needle tube sheath (1), a catheter component (I), a needle tube component (II), a long catheter component, a flat pressing joint component (III), a sliding clamping plate and an end cap;

the catheter component (I) comprises a catheter (2), one end of the catheter (2) is provided with a metal wedge (3), the catheter (2) penetrates into a three-way catheter seat (4), the metal wedge (3) is plugged into a cavity at one end of the three-way catheter seat (4), and the other end of the three-way catheter seat (4) is provided with an isolation plug (5);

the needle tube component (II) comprises a notch needle tube (6), the notch needle tube (6) penetrates into the catheter (2), one end of the notch needle tube (6) is connected with a notch needle seat (7), and the notch needle seat (7) is connected with the other end of the three-way catheter seat (4);

the long catheter component consists of a long catheter and a long catheter connecting seat;

the third end of a three-way conduit seat (4) in the conduit assembly (I) is connected with the flat pressing joint assembly through a long conduit (9) and an end cap of the long conduit connecting seat, and a sliding clamping plate (8) is arranged on the long conduit (9);

concora crush connects subassembly (III) including interface (14), be equipped with guide ring (13) in the one end of interface (14), guide ring (13) cover is served at one of silica gel spring (12), silica gel spring (12) interpolation has joint (11), connect (11) with the other end inside of interface (14) is connected, the other end of connecting (11) luer articulate long pipe connecting seat.

2. The applanation hub venous indwelling needle of claim 1, wherein: the long conduit connecting seat is a basic long conduit connecting seat (10) or a three-fork long conduit connecting seat (16).

3. The applanation hub venous indwelling needle of claim 1, wherein: the connector (11) is made of transparent grease-resistant PC (polycarbonate), the silica gel spring (12) is made of transparent organic silicon, the guide ring (13) is made of colored POM (polyoxymethylene) plastic, and the connector (14) is made of transparent PC.

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