CN209951466U

CN209951466U - Vein forming blood vessel

Info

Publication number: CN209951466U
Application number: CN201920294913.7U
Authority: CN
Inventors: 金跃辉; 殷青; 周海燕
Original assignee: SHANGHAI QISITE MEDICAL TECHNOLOGY Co Ltd
Current assignee: Shanghai Chest Medical Technology Co ltd
Priority date: 2019-03-08
Filing date: 2019-03-08
Publication date: 2020-01-17
Anticipated expiration: 2029-03-08

Abstract

The utility model relates to a vein of making grain, it has the blood vessel body of dacron, and the continuous satin is equipped with the line on this dacron blood vessel body, and its characterized in that, the line interval on this dacron blood vessel body is crescent from both ends to the centre, and the external diameter of this dacron blood vessel body is 6 ~ 46mm, and the line interval of making of its line is 0.5mm ~ 2.5.5 mm, and the line height is 0.1mm ~ 1.5.5 mm the utility model discloses mainly solve current dacron artificial blood vessel after sewing up because the tension of suture department two ends and the inconsistent technical problem of tension in the middle of the artificial blood vessel still have the advantage that does benefit to the growth of blood vessel cell to more be favorable to the patient recovered.

Description

Vein forming blood vessel

Technical Field

The utility model relates to an artificial blood vessel used in medical treatment, in particular to a vein-making blood vessel.

Background

The medical field can treat most common diseases of human beings, and the application of the implantable medical material in surgical operation is very wide. Various implantable medical materials have already achieved better medical effects clinically, and can greatly relieve the pain of patients. The artificial blood vessel in the prior art is generally woven by a weaving method, the weave structure of the existing woven artificial blood vessel in China is mainly a plain weave with tightly arranged tube wall fibers, and the existing woven artificial blood vessel comprises a woven real silk artificial blood vessel/a woven terylene artificial blood vessel and an artificial blood vessel interwoven by real silk and terylene.

However, the permeability of the wall of the plain weave artificial blood vessel is extremely low due to the over-compact tissue, and the low permeability wall is favorable for avoiding the blood leakage of the wall during the operation, but is difficult to grow into the tissue and achieve perfect tissue healing, so that degeneration and foreign body rejection are easy to occur after transplantation, for example, wall calcification, tubular scar shrinkage and tubular cavity blockage can occur. The satin tissue artificial blood vessel has high permeability, is favorable for the tissue ingrowth after transplantation, and can form a neointima similar to the normal blood vessel intima on the inner surface of the vessel wall. However, if used in systemic heparinized extracorporeal circulation, it must be pre-coagulated before application. Thus, the operation process is complicated and inconvenient in the operation process of competing for minutes and seconds.

In view of the above, the applicant proposed a dacron artificial blood vessel in 2009 (grant No.: CN 201341972Y). It has a terylene blood vessel body; the pipe body is provided with grains continuously. The outer diameter of the pipe body is 6-46 mm. The distance d1 between adjacent ridges is 0.5-2 mm.

The manufacturing process comprises the steps of carrying out production pretreatment on the flat vascular polyester material; molding the flat vascular polyester material to form a tubular structure; satin-finished on the tubular structure.

The artificial blood vessel structure is beneficial to controlling the blood leakage of the vessel wall during operation, is beneficial to the tissue ingrowth and healing, and is also beneficial to the operation and suture. Because of the satin structure, the product has better tensile property.

However, the applicant finds that the problems exist in the practical use process of the dacron artificial blood vessel: although the straight tube blank with the lines is easier to shuttle and suture during surgical suture, the tension at the two ends of the suture is not consistent with the tension in the middle of the artificial blood vessel after the suture is sutured. The blood infiltration and flow rate may be not constant, and the growth rate of the superficial cells of the blood vessel is not synchronous.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vein-making blood vessel, mainly solve current dacron artificial blood vessel after sewing up because the inconsistent technical problem of tension of the tension of suture department two ends and the tension in the middle of the artificial blood vessel still has the advantage that does benefit to the growth of blood vessel inner cell to more be favorable to the patient to be recovered.

To achieve the above object, the present invention is implemented as follows:

a kind of pattern-making blood vessel, it has tubular body of blood vessel of dacron, there are lines on the tubular body of blood vessel of dacron continuously satinly; the utility model is characterized in that the space between the lines on the terylene blood vessel tube body is gradually increased from the two ends to the middle.

The textured blood vessel is characterized in that the outer diameter of the terylene blood vessel body is 6 ~ 46mm, the textured space of the texture is 0.5mm ~ 2.5.5 mm, and the textured height is 0.1mm ~ 1.5 mm.

The textured blood vessel is characterized in that micropores are distributed on the terylene blood vessel tube body, and the pore diameter of each micropore is 20um ~ 500 um.

The technical effects of the utility model are that:

1. the utility model discloses it is the straight type blood vessel that possesses the line to make the line blood vessel, changes in the suture and shuttles back and forth and sews up when the operation is sewed up.

2. The utility model discloses the line interval of making the vein changes into progressive interval, and two end intervals are comparatively inseparable promptly, then gradually the interval is relaxed toward the intermediate position, when implanting the back, two ends are owing to sew up when tension is tensile, can make the interval tend one extremely, solve the synchronous length of cell and go into.

3. The utility model can be adjusted properly in operation, and the seam can not be closed.

4. Use the utility model discloses the line-making blood vessel, at the postoperative, when the blood flow was out of date, the doctor hoped can the cell grow into fast, and micropore on the blood vessel does benefit to the cell growth in the blood vessel to more be favorable to the patient to be recovered.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic structural view of the raw material (i.e., tubular pipe blank) for processing of the present invention.

Detailed Description

As shown in figure 1, the utility model discloses a textured blood vessel, which is provided with a terylene blood vessel tube body 1, wherein lines 2 are continuously arranged on the terylene blood vessel tube body 1, the distance between the lines 2 on the terylene blood vessel tube body 1 is gradually increased from two ends to the middle, the outer diameter of the terylene blood vessel tube body 1 (namely the maximum diameter of the tube body after texturing) is 6 ~ 46mm, the texturing distance of the lines 2 (namely the distance between adjacent lines) is 0.5mm ~ 2.5.5 mm, and the texturing height (namely the vertical height from the top to the bottom of the lines) is 0.1mm ~ 1.5 mm.

For example, the distance between the lines 2 at the two ends of the terylene blood vessel tube body 1 is 0.5mm, then the distance is gradually increased by adding 0.2mm to the middle until the distance between the lines 2 in the middle reaches 2.5mm, and at the moment, the line forming height can be a fixed value of 0.1mm ~ 1.5.5 mm.

In addition, lay the micropore on dacron blood vessel body 1, the aperture of this micropore is 20um ~ 500um, and it does benefit to the growth of intravascular cell to more be favorable to the patient to be recovered.

The manufacturing method of the utility model is as follows:

by heat setting, a straight cylindrical pipe blank (length L1 as shown in fig. 2) is set to the shape with the pattern forming space and height as shown in fig. 1, the length of the pipe blank is compressed from L1 to L3 and the pipe blank is set, and simultaneously the space after pattern forming is ensured to be gradually increased from two ends to the middle, and the pattern forming height is kept.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. All equivalent changes and modifications made according to the content of the claims of the present invention shall fall within the technical scope of the present invention.

Claims

1. A vein-making vessel comprises a terylene vessel body (1), wherein veins (2) are continuously satinized on the terylene vessel body (1); the dacron blood vessel tube is characterized in that the space between lines (2) on the dacron blood vessel tube body (1) is gradually increased from two ends to the middle.

2. The textured blood vessel of claim 1, wherein the outer diameter of the dacron blood vessel tube body (1) is 6 ~ 46mm, the texturing pitch of the texturing (2) is 0.5mm ~ 2.5.5 mm, and the texturing height is 0.1mm ~ 1.5.5 mm.

3. The textured blood vessel according to claim 1 or 2, wherein micropores are distributed on the terylene blood vessel tube body (1), and the pore diameter of the micropores is 20um ~ 500 um.