CN209966673U

CN209966673U - Support for treating iliac vein stenosis

Info

Publication number: CN209966673U
Application number: CN201920379139.XU
Authority: CN
Inventors: 陈宁恒; 郭学利; 张闯; 张秀丽; 王保恒
Original assignee: First Affiliated Hospital of Zhengzhou University
Current assignee: First Affiliated Hospital of Zhengzhou University
Priority date: 2019-03-25
Filing date: 2019-03-25
Publication date: 2020-01-21
Anticipated expiration: 2029-03-25

Abstract

The utility model discloses a bracket for treating iliac vein stenosis, which comprises a main body bracket, a left branch bracket and a right branch bracket which are communicated with each other at the bottom of the main body bracket, wherein the included angle between the left branch bracket and the main bracket is 140 degrees, and the included angle between the right branch bracket and the main bracket is 160 degrees; the outer pipe opening of the main support is provided with a first platinum mark point, the outer pipe opening of the left branch support is provided with a second platinum mark point, and the outer pipe opening of the right branch support is provided with a third platinum mark point. The utility model has the advantages that the bracket body is made into an inverted Y-shaped structure according to the anatomical characteristics, which not only can completely cover the lesion part of the iliac vein, but also can ensure the smooth backflow of blood in the inferior vena cava and the contralateral iliac vein and reduce the probability of thrombosis; simultaneously, the support body with the inverted Y-shaped structure is arranged in the inferior vena cava, the left iliac vein and the right iliac vein, the stability of the support body can be ensured, the support body is completely prevented from sliding in the veins, and the fixing effect is good.

Description

Support for treating iliac vein stenosis

Technical Field

The utility model relates to a medical instrument, in particular to a bracket for treating iliac vein stenosis.

Background

Both the iliac vein compression syndrome (Cockett syndrome) and the post-iliac vein thrombosis syndrome are characterized by iliac vein occlusion or stenosis, which can cause venous reflux disorder and venous hypertension, and can cause serious consequences such as lower limb venous valve insufficiency, varicose veins, lower limb edema, pigmentation, chronic ulcer of lower limbs, and the like, and meanwhile, iliac-femoral vein thrombosis can be secondarily formed, so that the recovery of the patency of iliac veins is the key of clinical treatment.

The traditional open operation has large wound and poor curative effect, and venous thrombosis is easy to occur after the operation. Therefore, at present, the iliac vein is restored by adopting the intracavity interventional therapy with simple operation and small wound clinically, namely, the metal stent is implanted after the iliac vein stenosis is subjected to balloon dilatation by an interventional means. At present, straight-tube metal mesh stents are mostly adopted for iliac vein stents clinically, on one hand, the number of straight-tube stents entering inferior vena cava is too large, the lower edge of the head end of the stent easily shields the contralateral iliac vein, so that blood circulation of the contralateral iliac vein is influenced, and even contralateral deep vein thrombosis is formed in severe cases; on the other hand, the head end of the stent enters the inferior vena cava too little, the lesion of the iliac vein can not be completely relieved by the stent, and the stent is easy to shift towards the far end of the iliac vein, thereby causing treatment failure.

Therefore, CN202875545U discloses a special stent for treating common iliac vein stenosis, which effectively solves the technical problem that the lower edge of the top end of the stent tube orifice protrudes from the left iliac vein to block the opposite iliac vein by making the tube orifice of the top end of the stent into an inclined plane structure. However, the bracket is easy to slide along the iliac vein after being extruded, the fixing effect is poor, and potential safety hazards exist. In order to solve the technical problem, CN203089465U discloses a prestressed stent for treating iliac vein stenosis, wherein an alloy frame with a brim is arranged on an inclined tube opening of the stent, the alloy frame and the inclined tube opening are in the same horizontal plane, and the stent is fixed by the alloy frame. Although the technical problem that the bracket slides towards the far end is solved, the alloy frame and the inclined plane pipe orifice are arranged in the same plane, so that the alloy frame is easy to extrude the iliac vein port, the comfort level is poor, and potential safety hazards exist; meanwhile, the stent is easy to slide towards the proximal end to block the contralateral iliac vein after being pressed, so that thrombus is formed in the contralateral iliac vein. Therefore, how to design a special iliac vein stent which has a good fixing effect and ensures the blood backflow of the contralateral vein is a key problem for the research of technicians in the field.

Disclosure of Invention

The utility model aims to provide a support for treating iliac vein stenosis, specially adapted treats II type left iliac vein compression syndrome.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model discloses a support for treating iliac vein stenosis, include the support body of making by the metal mesh, the support body is the structure of falling Y, and the support body includes that the length is 2.5 ~ 3.5cm, the pipe diameter is 22 ~ 32 mm's main support the main support bottom intercommunication is provided with left branch frame and right branch frame that the pipe diameter is 12 ~ 16mm, the contained angle between left branch frame and the main support is 140, the contained angle between right branch frame and the main support is 160; first platinum mark points are arranged at intervals at the outer pipe opening of the main support, second platinum mark points with the length of 2mm are arranged at intervals at the outer pipe opening of the left sub-support, third platinum mark points in an 8 shape are arranged at the pipe opening of the right sub-support attached to the right side of the right iliac vein, and the third platinum mark points are 4mm in length.

The length of the left branch frame is 4-8 cm, and the length of the right branch frame is 2-8 cm.

The first platinum mark point and the second platinum mark point are both of an elliptical structure.

The utility model has the advantages that the bracket body is made into an inverted Y-shaped structure according to the anatomical characteristics, which not only can completely cover the lesion part of the iliac vein, but also can ensure the smooth backflow of blood in the inferior vena cava and the contralateral iliac vein and reduce the probability of thrombosis; simultaneously, the support body with the inverted Y-shaped structure is arranged in the inferior vena cava, the left iliac vein and the right iliac vein, the stability of the support body can be ensured, the support body is completely prevented from sliding in the veins, and the fixing effect is good.

Drawings

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

Fig. 2 is another schematic structural diagram of the present invention.

Fig. 3 is a third middle structure diagram of the present invention.

Detailed Description

As shown in fig. 1, the stent for treating iliac vein stenosis according to the present invention comprises a stent body made of a metal (nickel-titanium alloy) mesh, wherein the stent body is of an inverted Y-shaped structure, the stent body comprises a main stent 1 (the main stent 1 is placed in a inferior vena cava 7) with a length of 3cm and a diameter of 26mm, a left branch stent 2 (the left branch stent 2 is placed in a left iliac vein 8) and a right branch stent 3 (the right branch stent 3 is placed in a right iliac vein 9) with a diameter of 12mm are communicated with the bottom of the main stent 1, an included angle between the left branch stent 2 and the main stent 1 is 140 °, an included angle between the right branch stent 3 and the main stent 1 is 160 °, four elliptical first platinum mark points 4 are provided at intervals at an outer tube opening of the main stent 1, four elliptical second platinum mark points 5 with a length of 2mm are provided at intervals at an outer tube opening of the left branch stent 2, an 8-shaped third platinum mark point 6 is arranged at the pipe orifice of the right branch frame 3, the length of the third platinum mark point 6 is 4mm, when the third platinum mark point is seen to be in an 8-shaped structure in development, the right branch frame is not in place, and when the third platinum mark point is a straight line, the right branch frame is accurately in place; the third platinum mark point 6 and the second platinum mark point 5 are different in length and shape, and the specific positions of the left branch frame and the right branch frame can be accurately distinguished and marked in the interventional operation.

During actual manufacturing, the stent body can be manufactured into various specifications according to the condition of a patient, and the specifications are as follows: when the left iliac vein is compressed, the length of the left branch frame is 6-8 cm, and the length of the right branch frame is 2cm, specifically shown in fig. 1; when the root of the inferior vena cava is pressed, the lengths of the left branch frame and the right branch frame are both 2-4 cm, and the lengths of the left branch frame and the right branch frame are consistent, specifically shown in fig. 2; when the left iliac vein and the right iliac vein are both pressed, the lengths of the left branch frame and the right branch frame are both 6-8 cm, and the left iliac vein and the right iliac vein are particularly shown in fig. 3.

During operation, according to the clinical intracavity interventional therapy operation specification, the stent body is sent into the inferior vena cava 7 of a patient by using a guide wire and an X-ray developing technology, and the positions of the main stent 1, the left stent 2 and the right stent 3 are tracked by X-rays, so that the left stent 2 is aligned to the left iliac vein 8, and the right stent 3 is aligned to the right iliac vein 9; and then releasing the stent body to ensure that the main stent 1 of the stent body is positioned in the inferior vena cava 7, the left branch stent 2 is positioned in the left iliac vein 8, and the right branch stent 3 is positioned in the right iliac vein 9. Because the bracket body is of an inverted Y-shaped structure, the sliding phenomenon of the bracket body can be completely avoided after the bracket body is implanted into a patient, and the fixing effect is good; meanwhile, the main bracket 1 is arranged in the inferior vena cava, and the right branch bracket 3 is arranged in the right iliac vein 9, so that the blood backflow of the inferior vena cava and the right iliac vein can be ensured, and the formation of thrombus is avoided.

Claims

1. A support for treating iliac vein stenosis, includes the support body of being made by the metal mesh, its characterized in that: the support body is of an inverted Y-shaped structure and comprises a main support (1) with the length of 2.5-3.5 cm and the pipe diameter of 22-32 mm, a left support (2) and a right support (3) with the pipe diameters of 12-16 mm are communicated with the bottom of the main support (1), the included angle between the left support (2) and the main support (1) is 140 degrees, and the included angle between the right support (3) and the main support (1) is 160 degrees; the device is characterized in that first platinum mark points (4) are arranged at intervals at the outer pipe opening of the main support (1), second platinum mark points (5) with the length of 2mm are arranged at intervals at the outer pipe opening of the left branch support (2), third platinum mark points (6) in an 8 shape are arranged at the pipe opening of the right branch support (3), and the length of the third platinum mark points (6) is 4 mm.

2. The stent for treating iliac vein stenosis of claim 1, wherein: the length of the left branch frame (2) is 4-8 cm, and the length of the right branch frame (3) is 2-8 cm.

3. The stent for treating iliac vein stenosis of claim 1, wherein: the first platinum mark point (4) and the second platinum mark point (5) are both of an elliptical structure.