CN201564952U - Novel infusion needle - Google Patents

The utility model relates to a novel infusion needle, which comprises a puncture needle component and an outer sleeve component, wherein the puncture needle component consists of a steel needle, a needle seat, a needle stopper and a locating ring; and the outer sleeve component comprises a fixed petal of a needle sleeve, a main conduit, a T joint and a soft conduit, wherein the fixed petal of the needle sleeve is sleeved at the outer part of the steel needle, and one end of the main conduit is connected with the fixed petal of the needle sleeve. The novel infusion needle is characterized in that the main conduit is externally provided with an operation wire-fixing ring, the outer end of the infusion needle body is connected with the T joint, and the steel needle is provided with a side hole for observing the condition of blood flow near to an inserting end. The novel infusion needle does not influence the operation visual field, is convenient for doctors to operate, can be convenient for observing the condition of blood flow, is convenient for the doctors to judge whether the puncture is successful, ensures the sharp of the steel needle to be exactly positioned to be good for the puncture due to the longing ring which is positioned at the outer part of the steel needle, is convenient in use, is safe and reliable, and can meet the various requirements of the heart operation.

Technical field

This utility model belongs to technical field of medical instruments, particularly relates to a kind of novel catheter needle.

Background technology

In the cardiac operation under direct vision that present known extracorporeal circulation is implemented down, be the method that extensively adopts both at home and abroad in the cold cardioplegic solution of aortic root puncture perfusion.The catheter needle three way cock of Ying Yonging connects fixedly petal of needle cannula clinically, owing near the catheter needle insertion end, promptly near patient, can influence doctor's surgical field of view when operation.Traditional catheter needle draw point does not have STH, can't observe the blood flow artificial situation during operation, causes medical personnel can only judge by rule of thumb whether puncture is successful.In addition, on the existing draw point locating ring is not set,, stretcher strain takes place easily under external force, cause the draw point needle point to expose length and change, influence puncture procedure because conduit is softer.

Summary of the invention

This utility model provides a kind of simple in structure and be convenient to the novel catheter needle of medical personnel's operation for solving the technical problem that exists in the known technology.

The technical scheme that this utility model is taked for the technical problem that exists in the solution known technology is: novel catheter needle, comprise puncture needle assembly and trocar sheath assembly, the puncture needle assembly is by draw point, needle stand, pin plug and locating ring constitute, the trocar sheath assembly comprises the fixing petal of needle cannula that is sleeved on the draw point outside, one end and needle cannula be the main pipe that is connected of petal fixedly, the three way cock, surgical thread retainer ring and flexible catheter, it is characterized in that: described draw point outside is provided with locating ring, be positioned at the external end of catheter needle and be connected with the three way cock, draw point has the side opening that is used to observe blood circumstance near insertion end.

Advantage and the good effect that the utlity model has are: because this utility model adopts technique scheme, promptly the three way cock is connected in external end, does not influence surgical field of view, is convenient to doctor's operation technique; Be shaped on STH at draw point near the insertion end position, can conveniently observe blood circumstance, provide convenience for the doctor judges the puncture success or not.This catheter needle is provided with locating ring in the draw point outside, guarantees that the draw point needle point accurately locatees, and is beneficial to puncture.This catheter needle is esy to use, safe and reliable, can satisfy the multiple needs of operation on heart.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is this utility model draw point structural representation;

Fig. 3 is main pipe and three way cock's structural representation.

Among the figure: 1, draw point; 1-1, STH; 2, the fixing petal of needle cannula; 3, surgical thread retainer ring; 4, three way cock; 5, needle stand; 6, pin plug; 7, platoon leader's Y joint; 8, pipe clamp; 9, main pipe; 10, flexible catheter; 11, needle shield pipe; 12, locating ring.

The specific embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

1. novel catheter needle, comprise puncture needle assembly and trocar sheath assembly, the puncture needle assembly is to be made of draw point, needle stand, pin plug and locating ring, the trocar sheath assembly comprises the fixing fixedly main pipe that is connected of petal, three way cock, surgical thread retainer ring, and the flexible catheter of petal, an end and needle cannula of needle cannula that is sleeved on the draw point outside, it is characterized in that: described draw point outside is provided with locating ring, be positioned at the external end of catheter needle and be connected with the three way cock, have the side opening that is used to observe blood circumstance near insertion end at draw point.