Remaining needle with combined connector

Abstract

The utility model belongs to the technical field of indwelling needles, and particularly relates to an indwelling needle with a combined joint, which comprises a catheter seat, a liquid inlet pipeline is arranged on the outer side of the catheter seat, a supporting pipe is arranged at one end of the liquid inlet pipeline far away from the catheter seat, the supporting pipe is hollow and is communicated with the inside of the liquid inlet pipeline, a connecting pipe is arranged on the outer side of the supporting pipe, and the connecting pipe is connected with the catheter seat. The connecting pipe is communicated with the interior of the supporting pipe, a plurality of elastic plates are arranged on the inner side of the connecting pipe, the elastic plates are obliquely arranged from the outer side of the connecting pipe to the center, and arc-shaped grooves are formed in the ends, away from the connecting pipe, of the elastic plates. And the stability of the infusion tube in the connecting tube is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of indwelling needle, specifically is a kind of indwelling needle with combination joint. BACKGROUND

[0002] Indwelling needle is also called intravenous indwelling needle or cannula needle, is an advanced infusion tool, and has wide application in medical field, mainly by soft catheter and stainless steel puncture guide needle core, it is often used for patient needing shorter time repeated infusion, reduces intravenous puncture times, and in order to guarantee the use effect of indwelling needle, usually add a combination joint at the end of indwelling needle.

[0003] Combination joint includes connecting port and dosing port, directly add medicine in infusion process by the dosing port set, need not interrupt infusion process, improve the flexibility of treatment, connect infusion tube through connecting port, so as to deliver medicine or liquid into patient's body, but the existing infusion tube is connected, mostly by extruding infusion tube, infusion tube is inserted into the inside of connecting port, and according to the elasticity of infusion tube, it is expanded in the inside of connecting port, so that the outside of infusion tube is attached to the inside of connecting port, the connecting mode is relatively convenient, but when patient moves, infusion tube will shake in the inside of connecting port, so as to cause infusion tube to fall off, reduce the stability when infusing. SUMMARY

[0004] The utility model aims at providing a kind of indwelling needle with combination joint, improve the stability of infusion tube in the inside of connecting pipe.

[0005] To achieve the above-mentioned purpose, the utility model employs the technical scheme that provides a kind of indwelling needle with combination joint, including catheter seat, the outside of catheter seat is equipped with liquid inlet pipeline, and the one end of liquid inlet pipeline away from catheter seat is equipped with support pipe, the support pipe is hollowly arranged, and the inside of support pipe is communicated with liquid inlet pipeline, the outside of support pipe is equipped with connecting pipe, the inside of connecting pipe is communicated with support pipe, the inside of connecting pipe is equipped with a plurality of elastic plates, and the elastic plate is inclinedly arranged from the outside of connecting pipe to center, the one end of elastic plate away from connecting pipe is equipped with arc slot.

[0006] Optionally, the one end of support pipe away from liquid inlet pipeline is equipped with dosing port, and dosing port is communicated with the inside of support pipe.

[0007] Optionally, the one end of support pipe away from liquid inlet pipeline is equipped with protective cover, and the inside of protective cover is tightly attached to the outside of support pipe.

[0008] Optionally, the one end of connecting pipe away from support pipe is equipped with sealing cover, the sealing cover is sleeved on the outside of connecting pipe, and the inside of sealing cover is screw-connected with the outside of connecting pipe.

[0009] Optionally, one end of the catheter seat is provided with a clamping groove, and the inner side of the clamping groove is connected with a retention needle.

[0010] Optionally, the outer side of the catheter seat is provided with a needle holding handle.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] When the infusion tube is connected, one end of the infusion tube is inserted into the inside of the connecting pipe, the plurality of elastic plates arranged on the inner side of the connecting pipe are extruded by the infusion tube, when the elastic plates are extruded, the elastic plates will bend to the inside of the connecting pipe, under the elastic action of the elastic plates themselves, certain extrusion force is applied to the infusion tube, thereby the stability of the infusion tube in the connecting pipe is improved, and when the infusion tube moves to the end of the elastic plate, the arc-shaped groove away from one end of the connecting pipe of the elastic plate will be attached to the outer side of the infusion tube, the contact area between the infusion tube and the arc-shaped groove is increased, and the friction force between the infusion tube and the arc-shaped groove is increased, thereby the stability of the infusion tube in the connecting pipe is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can be obtained according to these drawings without the creative labor.

[0014] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0015] Figure 2 It is a three-dimensional structure schematic view of the utility model;

[0016] Figure 3 It is a three-dimensional structure schematic view of the utility model;

[0017] Figure 4 It is a three-dimensional structure schematic view of the utility model;

[0018] In the drawing: 1, catheter seat; 2, liquid inlet pipe; 3, support pipe; 4, connecting pipe; 5, elastic plate; 6, arc-shaped groove; 7, dosing port; 8, protective cover; 9, sealing cover; 10, clamping groove; 11, retention needle; 12, needle holding handle. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0020] It should be noted that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element.

[0021] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0022] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0023] Referring to Figures 1-4The utility model provides a kind of indwelling needle with combined joint, and the utility model discloses a kind of indwelling needle with combined joint, including catheter seat 1, the outside of catheter seat 1 is equipped with liquid inlet pipeline 2, and the end of liquid inlet pipeline 2 away from catheter seat 1 is equipped with support pipe 3, support pipe 3 is hollowly arranged, and support pipe 3 is communicated with the inside of liquid inlet pipeline 2, the outside of support pipe 3 is equipped with connecting pipe 4, connecting pipe 4 is communicated with the inside of support pipe 3, the inside of connecting pipe 4 is equipped with multiple elastic plates 5, and elastic plate 5 is obliquely arranged from the outside of connecting pipe 4 to center, the end of elastic plate 5 away from connecting pipe 4 is equipped with arc slot 6, the end of support pipe 3 away from liquid inlet pipeline 2 is equipped with dosing port 7, and dosing port 7 is communicated with the inside of support pipe 3, the end of support pipe 3 away from liquid inlet pipeline 2 is equipped with protective cover 8, and the inside of protective cover 8 is closely combined with the outside of support pipe 3, the end of connecting pipe 4 away from support pipe 3 is equipped with sealing cover 9, sealing cover 9 is sleeved on the outside of connecting pipe 4, and the inside of sealing cover 9 is screw-connected with the outside of connecting pipe 4, one end of catheter seat 1 is equipped with clamping groove 10, and the inside of clamping groove 10 is connected with indwelling needle head 11, the outside of catheter seat 1 is equipped with needle handle 12, when needing to use dosing port 7, protective cover 8 is pulled, and protective cover 8 is removed from the end of support pipe 3, so that dosing port 7 is exposed, so that the medicine is conveniently added to the inside of liquid inlet pipeline 2, and because protective cover 8 is connected with support pipe 3 by friction force, it can be quickly removed and dosed, and it is convenient to use.

[0024] Working principle:

[0025] When connecting infusion tube, sealing cover 9 is removed from the end of connecting pipe 4, while one end of infusion tube is inserted into the inside of connecting pipe 4, multiple elastic plates 5 arranged on the inside of connecting pipe 4 are extruded by infusion tube, when elastic plate 5 is extruded, it will bend to the inside of connecting pipe 4, when infusion tube moves to the end of elastic plate 5, arc slot 6 arranged on the end of elastic plate 5 away from connecting pipe 4 will be combined with the outside of infusion tube, increase the contact area between infusion tube, improve the friction between infusion tube, and under the elastic force of elastic plate 5 itself, a certain extrusion force is also applied to infusion tube, so that the stability of infusion tube in connecting pipe 4 is improved;

[0026] When needing to use dosing port 7, protective cover 8 is pulled, and protective cover 8 is removed from the end of support pipe 3, so that dosing port 7 is exposed, so that the medicine is conveniently added to the inside of liquid inlet pipeline 2, and because protective cover 8 is connected with support pipe 3 by friction force, it can be quickly removed and dosed, and it is convenient to use;

[0027] Through the outside of catheter seat 1, needle handle 12 is conveniently held catheter seat 1, while catheter seat 1 and indwelling needle head 11 are conveniently pushed and moved.

[0028] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An indwelling needle with a combination joint, characterized by: The utility model provides a catheter seat (1), the outer side of catheter seat (1) is equipped with liquid inlet pipe (2), and the one end of liquid inlet pipe (2) is equipped with support pipe (3) away from catheter seat (1), support pipe (3) is hollowly arranged, and the inside of liquid inlet pipe (2) is communicated with support pipe (3), the outer side of support pipe (3) is equipped with connecting pipe (4), and the inside of connecting pipe (4) is communicated with support pipe (3), the inner side of connecting pipe (4) is equipped with a plurality of elastic plate (5), and the elastic plate (5) is inclinedly arranged from the outer side of connecting pipe (4) to the center, and the one end of elastic plate (5) is equipped with arc slot (6) away from connecting pipe (4).

2. The catheter assembly of claim 1 wherein: The one end of support pipe (3) away from liquid inlet pipe (2) is equipped with dosing port (7), and dosing port (7) is communicated with the inside of support pipe (3).

3. The catheter assembly of claim 2 wherein: The one end of support pipe (3) away from liquid inlet pipe (2) is equipped with protective cover (8), and the inner side of protective cover (8) is closely combined with the outer side of support pipe (3).

4. The catheter assembly of claim 1 wherein: The one end of connecting pipe (4) away from support pipe (3) is equipped with sealing cover (9), sealing cover (9) is sleeved on the outer side of connecting pipe (4), and the inner side of sealing cover (9) is screw-connected with the outer side of connecting pipe (4).

5. The catheter assembly of claim 1 wherein: The one end of catheter seat (1) is equipped with clamping groove (10), and the inner side of clamping groove (10) is connected with indwelling needle (11).

6. The catheter assembly of claim 5 wherein: the needle is a safety needle having a needle guard. The outer side of catheter seat (1) is equipped with needle holding handle (12).

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