CN2453905Y - Aorta catheter - Google Patents

Abstract

The utility model relates to an inserting pipe for an aorta. A body part of the utility model is a combined reducer pipe which is formed by one-step extrusion molding; the end having a smaller diameter on the body part is an inserting end; the body part is provided with a color mark line which is formed by combination in the axial direction on the pipe wall, and the width of the color mark line can be regulated; a position near the inserting end on the body part is provided with a positioning ring; the inserting end can form a bending nozzle shape. The utility model has the advantages of simple structure, safety, integral forming without seam, soft pipe body, smooth transition, small blood flow resistance, good transparency and convenient observation, and the national blank of the product in an extracorporeal circulation operation is filled.

Description

Aortic cannulation

This utility model relates to the aortic cannulation that carries out cardiac operation under a kind of extracorporeal circulation.

In cardiac operation, finish metabolism by the effect of heart-lung machine and oxygenation chamber, the fresh blood that contains oxygen is got back to human body through aortic cannulation again.At present the aortic cannulation that uses clinically has a kind of PVC of being dip forming such as Fig. 3, and this product inner wall smooth, wall thickness is even, tapering transition good, and just poor transparency influence people's observation to bubble when aerofluxus, and does not have to bend and chew shape.Second kind is that main part is straight Tong shape such as Fig. 4, and front end is that insertion portion is a stainless steel tube, and the centre connects with moulding.Because bore changes suddenly, be unfavorable for the smooth flow of blood.Another is that main part and insertion portion adopt injection mo(u)lding respectively, middle by the moulding connection, lapping defect appears in this structure easily in the junction, blood cell is caused damage, to produce simultaneously multiple different specification according to demand, need to drop into very big die cost.

The purpose of this utility model is to provide a kind of simple in structure, reliable for overcoming above-mentioned deficiency, and one-body molded gapless, resistance of blood flow are little, smooth transition, the aortic cannulation that transparency is good, easy to use.

This utility model is realized by following measure:

A kind of aortic cannulation, main part is the compound reducer pipe of disposable extrusion molding, the less end of main part diameter is an insertion end, and main part has in the color-coded lines of described tube wall along the compound width-adjustable joint of axis direction, and main part is provided with a locating ring near insertion end.The insertion end of main part can be the curved shape of chewing.Locating ring and main part insertion end apart from scalable.

Description of drawings:

Fig. 1 is the structural representation of this utility model embodiment;

Fig. 2 is embodiment 2 structural representations;

Fig. 3, Fig. 4, Fig. 5 are the prior art structural representation;

Among the figure: (1) main part (2) insertion end (3) locating ring (4) mark line

The utility model is described in further detail below in conjunction with accompanying drawing:

Embodiment 1 main part of aortic cannulation (1) as shown in Figure 1 is the compound reducer pipe of the disposable extrusion molding of employing plastic material, body weight difference according to the patient, random variation conduit diameter thickness, wall thickness size, tapering change on demand, produce the product of multiple different size.The less end of main part diameter is insertion end (2), and its top is the angular cut shape, and gradient is 55 degree, smooth no corner angle.Main part has at the blue markings line (4) of described tube wall along the compound width-adjustable joint of axis direction, as the sign of insertion end bending direction.15 millimeters are provided with a locating ring (3) apart from the insertion end top, in use set insertion depth and regulate and have a positioning action.

Embodiment 2 as shown in Figure 3, the insertion end of main part can be the curved shape of chewing.Curved top of chewing also is the angular cut shape, and apart from establishing a locating ring (3) in 11 millimeters at insertion end top, main part compound blue mark line (4) can be debated by color-coded lines after conduit enters human body in the use and Wan do not chewed shape insertion end opening direction.

The utility model has the advantage of: gapless simple in structure, safe and reliable, one-body molded, the body softness is moderate, Insert easily, smooth transition, resistance of blood flow are little, and transparency is convenient to observe well blood circumstance, reaches instructions for use, fills out Mend the domestic blank of this product in the cardiopulmonary bypass surgery, had significant economic benefit and social benefit.

Claims (3)

1. aortic cannulation, it is characterized in that main part (1) is the compound reducer pipe of disposable extrusion molding, the less end of main part diameter is insertion end (2), main part has in the color-coded lines (4) of described tube wall along the compound width-adjustable joint of axis direction, and main part is provided with a locating ring (3) near insertion end.

2. aortic cannulation according to claim 1 is characterized in that the insertion end of main part can be the curved shape of chewing.

3. aortic cannulation according to claim 1, it is characterized in that locating ring (3) and main part insertion end apart from scalable.

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