CN205007003U - Outer needle tubing of puncture drainage needle tubing - Google Patents

Abstract

The utility model discloses an outer needle tubing of puncture drainage needle tubing, the length of outer needle tubing is 67 -245mm, set up an inlet on the pipe wall of outer needle tubing, the inlet is rectangle, the width of inlet is 8.5mm, and length is 1.2mm, the inlet is located the intersection of needle tubing tip interface, washing liquid interface and drawing liquid interface, and this inlet with washing liquid interface intercommunication, the groove of compressing tightly has on the pipe wall of outer needle tubing, compress tightly the groove with the distance of the lower terminal surface of outer needle tubing is 10 -15mm. The utility model discloses an outer needle tubing of puncture drainage needle tubing, with inner syringe and three way connection post assembling, inside body fluid need can not be followed inner syringe through the suction and flowed collection cell or tissue that can be more abundant.

Description

A kind of outer needle tube of puncture drainage needle tube

technical field

The utility model belongs to the field of medical instruments and relates to an outer needle tube for a puncture and drainage needle tube.

Background technique

Existing puncture needles usually only include puncture function, and the needle tube liner adopts a solid needle tube liner core. There is only one single-lumen channel in the entire needle tube, and the required cells or tissues can only be removed from the patient's body by suction during the drainage process. Extract it.

Utility model content

The purpose of this utility model is to overcome the defects of the prior art and provide an outer needle tube for puncture and drainage needle tube. After being assembled with the inner needle tube and the three-way joint, the internal body fluid can flow out from the inner needle tube without suction, which can be more fully collection of cells or tissues.

The technical solution to achieve the above object is: an outer needle tube of a puncture and drainage needle tube, the puncture and drainage needle tube includes a needle tube body and a three-way joint, the needle tube body includes an outer needle tube and an inner needle tube, and the three-way joint is an inverted Y Type structure, the three-way joint includes a needle tube end interface at the upper end and a cleaning liquid interface and a suction interface at the lower end; the needle tube body is vertically arranged, and the lower end of the needle tube body is inserted into the needle tube end interface;

The length of the outer needle tube is 67-245mm, and a liquid inlet is opened on the wall of the outer needle tube, the liquid inlet is rectangular, the width of the liquid inlet is 8.5mm, and the length is 1.2mm;

The liquid inlet is located at the intersection of the needle tube end interface, the cleaning liquid interface and the liquid suction interface, and the liquid inlet is connected to the cleaning liquid interface;

There is a compression groove on the tube wall of the outer needle tube, and the distance between the compression groove and the lower end surface of the outer needle tube is 10-15 mm.

The above-mentioned outer needle tube of a puncture and drainage needle tube, wherein, the distance between the upper end surface of the outer needle tube and the upper end surface of the three-way joint is 63.5mm-203.2mm.

After the outer needle tube of the puncture drainage needle tube of the utility model is assembled with the inner needle tube and the three-way joint, compared with the prior art, it has the following advantages:

(1) Fluids such as normal saline can be injected, so that the internal body fluid can flow out from the inner needle tube without suction;

(2) Increased flushing process, no need for suction treatment, less damage to patients;

(3) Cells or tissues can be collected more fully during the process of collecting cells or tissues.

Description of drawings

Fig. 1 is the structural representation of the puncture drainage needle tube of the present utility model;

Fig. 2 is a side view of the puncture and drainage needle tube of the present utility model;

Fig. 3 is the A-A direction sectional view of Fig. 2;

Fig. 4 is the enlarged schematic diagram of part B in Fig. 3;

Fig. 5 is a schematic structural view of the inner needle tube.

detailed description

In order to enable those skilled in the art to better understand the technical solution of the present utility model, its specific implementation will be described in detail below in conjunction with the accompanying drawings:

Please refer to FIG. 1 to FIG. 5 , the preferred embodiment of the present utility model, the puncture and drainage needle tube includes a needle tube body 10 and a three-way joint 3 , and the needle tube body 10 includes an outer needle tube 1 and an inner needle tube 2 .

The three-way joint 3 has an inverted Y-shaped structure, and the three-way joint 3 includes a needle tube end interface 31 at the upper end, a cleaning liquid interface 32 and a liquid suction interface 33 at the lower end. The cleaning liquid interface 32 and the liquid suction interface 33 respectively adopt luer cones.

The needle tube body 10 is arranged vertically, and the lower end of the needle tube body 10 is inserted into the needle tube end interface 31 .

An outer needle tube 1 for puncture and drainage needle tube, the length of the outer needle tube 1 is 67-245 mm, a liquid inlet 11 is opened on the tube wall of the outer needle tube 1, the liquid inlet 11 is rectangular, and the width of the liquid inlet 11 is 8.5 mm , the length is 1.2mm; the liquid inlet 11 is located at the junction of the needle tube end interface 31, the cleaning liquid interface 32 and the suction interface 33, and the liquid inlet 11 is connected with the cleaning liquid interface 31; the upper end surface of the outer needle tube 1 is connected to the The distance between the upper end faces of the three-way joint 3 is 63.5mm-203.2mm.

See also Fig. 5, offer crescent-shaped groove 21 on the tube wall of inner needle tube 2, the chord length of crescent-shaped groove 21 is 1/3rd of the diameter of inner needle tube 2, the lower end surface of crescent-shaped groove 21 and The distance between the lower end surface of the inner needle tube 2 is 15-20mm.

The inner needle tube 2 is fastened in the outer needle tube, and after the inner needle tube 2 squeezes the tube wall of the outer needle tube 1, a compression groove is formed on the tube wall of the outer needle tube 1, and the distance between the compression groove and the lower end surface of the outer needle tube 1 is 10-15mm .

When the outer needle tube of the puncture drainage needle tube of the utility model is in use, flushing liquid such as physiological saline is injected into the space between the outer needle tube 1 and the inner needle tube 2 through the cleaning liquid interface 32 and the liquid inlet 11 after being assembled with the inner needle tube and the tee joint. The compression groove formed on the tube wall of the outer needle tube 1 after the inner needle tube 2 squeezes the tube wall of the outer needle tube 1 can prevent the flushing liquid from leaking, so that the flushing liquid only flows to the needle tip, and the cells or tissues to be collected are collected through the inner needle tube without The need for suction is less damaging to the patient.

In summary, after the outer needle tube of the puncture and drainage needle tube of the present invention is assembled with the inner needle tube and the three-way joint, the internal body fluid can flow out from the inner needle tube without suction, and cells or tissues can be collected more fully.

Those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the utility model, rather than as a limitation to the utility model, as long as within the spirit of the utility model, the above-mentioned The changes and modifications of the embodiments will all fall within the scope of the claims of the present utility model.

Claims (2)

1. the outer needle tubing of a puncture drainage needle tubing, described puncture drainage needle tubing comprises needle tubing body and three way cock, described needle tubing body comprises outer needle tubing and inner needle tube, described three way cock is inverted y-type structure, and this three way cock comprises the syringe tip interface being positioned at upper end and the cleanout fluid interface being positioned at lower end and drawing liquid interface; Described needle tubing body is vertically arranged, in syringe tip interface described in the lower end grafting of described needle tubing body; It is characterized in that,

The length of described outer needle tubing is 67-245mm, and the tube wall of described outer needle tubing is offered an inlet, described inlet is rectangle, and the width of described inlet is 8.5mm, and length is 1.2mm;

Described inlet is positioned at the intersection of described syringe tip interface, cleanout fluid interface and drawing liquid interface, and this inlet and described cleanout fluid orifice;

The tube wall of described outer needle tubing has pressing groove, and the distance of the lower surface of described pressing groove and described outer needle tubing is 10-15mm.

2. the outer needle tubing of a kind of puncture drainage needle tubing according to claim 1, is characterized in that, the distance between the upper surface of described outer needle tubing and the upper surface of described three way cock is 63.5mm-203.2mm.