CN219516702U

CN219516702U - Tectorial membrane support windowing puncture device used in thoracoabdominal aortic stent operation

Info

Publication number: CN219516702U
Application number: CN202222313800.1U
Authority: CN
Inventors: 赖永源; 魏惠琴; 黄群菊; 赵福龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2023-08-15
Anticipated expiration: 2032-08-31

Abstract

A covered stent fenestration puncture device for use in thoracoabdominal aortic stent surgery, comprising: a puncture needle, which adopts 935 super hard steel wire of COOK company, the tail end of which is grinded into sharp point; the soft catheter is a hollow hose, a first mark point is arranged at a position 7mm away from the front end, and a second mark point is arranged at a position 15mm away from the first mark point; two thin steel wires with the diameter of 0.08mm are arranged between the first marking point and the second marking point in the soft catheter; the front end of the soft catheter is conical; the tail end of the soft catheter is connected with a handheld plate; and the front end of the Y valve is in threaded connection with the hand-held plate of the flexible catheter. The puncture needle has good bending degree, and can be used for windowing and puncturing the covered stent reaching the thoracoabdominal aorta from the brachial artery of the branch vessel. Two thin steel wires are arranged between two marking points on the soft catheter to strengthen the hardness of the soft catheter, so that the flexibility of the puncture needle is avoided, and the safe and smooth completion of the windowing puncture action is ensured. Short operation time and high safety.

Description

Tectorial membrane support windowing puncture device used in thoracoabdominal aortic stent operation

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a tectorial membrane stent windowing puncture device used in a thoracoabdominal aortic stent operation.

Background

Vascular disease has become one of the main causes of life threatening for human beings, and it is generally difficult to cure the vascular disease by itself after the occurrence of the vascular disease, if the vascular disease is not properly and timely treated, the vascular disease will rupture and bleed and even die.

Aiming at aortic aneurysm, aortic dissection and other diseases in vascular diseases, the current surgical treatment methods mainly comprise two main types of open surgery and intracavity repair, wherein the intracavity repair is characterized in that a covered stent is implanted in an aorta through arterial puncture or small incision, a lesion cavity is isolated, and a blood flow channel is reconstructed in situ, compared with the open surgery, the intracavity repair does not need to open chest or abdomen, has small wound, has lower requirements on the corresponding physical condition of a patient and the like, and gradually becomes the first choice method for treating the aortic disease.

When aortic disease occurs at, involves, or is too close to the multi-branch vessel, most patients can only choose open surgery due to the lack of a suitable stent-graft for endoluminal repair.

Although a mode of adding a chimney bracket on the existing covered bracket is tried, the operation is difficult, and problems such as internal leakage, bracket collapse or bracket occlusion are easy to occur, so that the popularization is difficult.

At present, a method for penetrating the membrane stent through the carotid artery by using the biliary tract puncture needle is adopted, but the bending degree of the biliary tract puncture needle is insufficient, the operation speed is low, the ischemia time of the branch vessel after the branch vessel is isolated by the membrane stent is long, and the method is unsafe.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a windowing puncture device for a covered stent in a thoracic-abdominal aortic stent operation, so as to rapidly, safely and conveniently realize windowing puncture of the covered stent when aortic diseases occur at a multi-branch vessel.

The utility model is realized in the following way:

a covered stent fenestration puncture device for use in thoracoabdominal aortic stent surgery, comprising:

a puncture needle which adopts 935 super hard steel wire of COOK company, the diameter is 0.89mm, the length is 47-53cm, the tail end is grinded to sharp point;

the soft catheter is a hollow hose with the diameter of a tip of 1.65mm, the diameter of the tip of 0.92mm and the length of 29-33mm, a first mark point is arranged at a position 7mm away from the front end, and a second mark point is arranged at a position 15mm away from the first mark point; two thin steel wires with the diameter of 0.08mm are arranged between the first marking point and the second marking point in the soft catheter or between the first marking point and the tail end of the soft catheter; the front end of the soft catheter is conical; the tail end of the flexible catheter is connected with a handheld plate;

the front end of the Y valve is in threaded connection with the handheld plate of the soft catheter;

the puncture needle penetrates into the soft catheter through the Y valve.

Further, the soft catheter is made of polyimide or polycarbonate.

Further, the first and second marking points on the flexible catheter each comprise: an inner steel ring arranged on the inner wall of the soft catheter and an outer steel ring arranged on the outer wall of the soft catheter; the inner steel ring and the outer steel ring are concentric circles; and the thin steel wire is clamped between the inner steel ring and the outer steel ring.

Further, the inner steel ring and the outer steel ring are made of platinum iridium alloy.

Further, the steel wires are made of 304 stainless steel.

Further, the puncture needle length is 53cm, and the soft catheter length is 33cm.

Further, the puncture needle length is 47cm, and the soft catheter length is 29cm.

The utility model has the advantages that:

1. the puncture needle is manufactured by selecting the tail end of 935 super hard steel wire produced by COOK company and grinding the tail end into sharp point by adopting sand paper, has good bending degree, and can be used for windowing and puncturing the branch vessel brachial artery from the tectorial membrane stent reaching the thoracoabdominal aorta.

2. Two thin steel wires are arranged between two marking points on the soft catheter to strengthen the hardness of the soft catheter, so that the flexibility of the puncture needle is avoided, and the safe and smooth completion of the windowing puncture action is ensured.

3. Short operation time and high safety.

Drawings

The utility model will be further described with reference to the accompanying drawings, in conjunction with examples.

Fig. 1 is a schematic structural view of the present utility model.

FIG. 2 is a schematic view of the structure of the puncture needle according to the present utility model.

Fig. 3 is a schematic view of the structure of the flexible catheter of the present utility model.

Fig. 4 is an enlarged schematic view of the combination of the flexible conduit and the Y valve of the present utility model.

Fig. 5 is an enlarged schematic view of a portion of fig. 1 at a.

Fig. 6 is an enlarged partial schematic view at B in fig. 2.

Detailed Description

As shown in fig. 1 to 6, a stent graft fenestration puncture device for use in a thoracic and abdominal aortic stent operation, comprising:

a puncture needle 1, which is made of 935 super hard steel wire of COOK company, with diameter of 0.89mm (0.35 in) and length of 53cm, and whose tail end is sharpened;

a soft catheter 2 which is a hollow hose with the diameter of 1.65mm, the tip diameter of 0.92mm and the length of 33mm, a first mark point 21 is arranged at the position 7mm away from the front end, and a second mark point 22 is arranged at the position 15mm away from the first mark point; two thin wires 23 with the diameter of 0.08mm are arranged between the first mark point 21 and the second mark point 22 in the soft catheter (the lengths of the two thin wires 23 can also be from the first mark point 21 to the tail end of the soft catheter 2); the front end of the soft catheter 2 is conical; the tail end of the flexible catheter 2 is connected with a handheld plate 24; the first marking point 21 and the second marking point 22 on the flexible catheter 2 each comprise: an inner steel ring arranged on the inner wall of the soft catheter 2 and an outer steel ring arranged on the outer wall of the soft catheter 2; the inner steel ring and the outer steel ring are concentric circles; the thin steel wires 23 are clamped between the inner steel ring and the outer steel ring. The two thin steel wires 23 enhance the penetration force and the fracture resistance of the head end. The inner steel ring and the outer steel ring are made of platinum iridium alloy. The thin steel wire 23 is made of 304 stainless steel;

and the front end of the Y valve 3 is in threaded connection with the handheld plate 24 of the flexible catheter 2.

The whole operation process is as follows:

step one: placing the covered stent into main blood vessels of thoracic and abdominal aorta, wherein the position of the covered stent is just the bifurcation of the main blood vessels and branch blood vessels (carotid artery, brachial artery or femoral artery, etc.), at the moment, the adventitia of the covered stent blocks the branch blood vessels, so that the branch blood vessels are ischemic;

step two: a branch vessel implantation sheath (length 13cm, diameter 1.67 mm) is punctured from a neck subcutaneous carotid artery (or brachial artery, femoral artery, etc.), at the moment, a soft catheter 2 with a puncture needle 1 (at the moment, the needle of the puncture needle 1 does not puncture the head end of the soft catheter 2) enters the branch vessel through the sheath, reaches the outer edge of a tectorial membrane bracket, a knob at the tail end of a Y valve 3 is rotated, the needle of the puncture needle 1 penetrates out of the soft catheter 2, the puncture needle 1 and the soft catheter 2 are fixed by the Y valve 3, and the puncture needle 1 drives the soft catheter 2 to puncture the stent membrane together; two marking points 21, 22 are positioned on the inner side and the outer side of the stent membrane;

step three: the puncture needle 1 is withdrawn through the Y valve 3, and the soft catheter 2 is still left in the branch vessel;

step four: feeding the guide wire into the flexible catheter 2 through the Y valve 3;

step five: withdrawing the soft catheter 2, and only leaving the guide wire in the branch vessel;

step six: the saccule is sent into the inside and outside of the stent membrane through the guide wire, and the saccule is expanded to ensure that the needle punched Kong Cheng on the original membrane is large, so that blood can flow into the branch vessel;

step seven: the saccule and the guide wire are drawn out of the body together, and the operation is completed.

In the whole operation process, the utility model is specially used for the windowing puncture step, the puncture needle 1 of the utility model is manufactured by selecting the tail end of 935 super-hard steel wire produced by COOK company and grinding the tail end into a sharp point by adopting sand paper, and the bending degree is good. Two thin steel wires 23 are arranged between two marking points 21 and 22 on the soft catheter 2 to strengthen the hardness of the soft catheter, so that the flexibility of the puncture needle 1 is avoided, and the safe and smooth completion of the windowing puncture action is ensured. Short operation time and high safety.

The parameters of the components used in the operation in this embodiment are as follows:

name of the name	Length of	Diameter of
			Sheath tube	13cm	1.67mm(5F)
Puncture needle (935 super hard steel wire)	53cm	0.89mm
			Soft catheter	33cm	1.65mm
Thin steel wire (platinum/iridium alloy)	15mm or 30mm	0.08mm

In this example, the puncture needle 1 was 53cm and the flexible catheter 2 was 33cm. In specific practice, it is also possible to provide a configuration in which the length of the puncture needle is 47cm and the length of the flexible catheter is 29cm.

The windowing puncture device for the covered stent has short operation time and high safety.

The above examples and drawings are not intended to limit the form or form of the present utility model, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present utility model.

Claims

1. A tectorial membrane support piercing depth that windows for in thoracoabdominal aortic stent operation, its characterized in that: comprising the following steps:

the puncture needle penetrates into the soft catheter through the Y valve.

2. A stent graft fenestration device for use in thoracoabdominal aortic stent surgery as in claim 1, wherein: the soft catheter is made of polyimide or polycarbonate.

3. A stent graft fenestration device for use in thoracoabdominal aortic stent surgery as in claim 1, wherein: the first mark point and the second mark point on the soft catheter comprise: an inner steel ring arranged on the inner wall of the soft catheter and an outer steel ring arranged on the outer wall of the soft catheter; the inner steel ring and the outer steel ring are concentric circles; and the thin steel wire is clamped between the inner steel ring and the outer steel ring.

4. A stent graft fenestration device for use in thoracoabdominal aortic stent surgery as in claim 3, wherein: the inner steel ring and the outer steel ring are made of platinum iridium alloy.

5. A stent graft fenestration device for use in thoracoabdominal aortic stent surgery as in claim 3, wherein: the fine steel wire is made of 304 stainless steel.

6. A stent graft fenestration device for use in thoracoabdominal aortic stent surgery as in claim 1, wherein: the length of the puncture needle is 53cm, and the length of the soft catheter is 33cm.

7. A stent graft fenestration device for use in thoracoabdominal aortic stent surgery as in claim 1, wherein: the length of the puncture needle is 47cm, and the length of the soft catheter is 29cm.