CN215458512U

CN215458512U - A capture ware for intervention of percutaneous blood vessel intracavity treatment

Info

Publication number: CN215458512U
Application number: CN202121830391.1U
Authority: CN
Inventors: 姚雪; 张希全
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2022-01-11
Anticipated expiration: 2031-08-06

Abstract

The utility model relates to the technical field of intravascular interventional medical devices, in particular to a catcher for percutaneous intravascular interventional treatment, which comprises: the outer wall of the head end of the catheter is provided with a plurality of suckers; the first guide wire is sleeved in the catheter and is bent at the head end of the catheter to form a snare for grabbing foreign matters; the second guide wire is sleeved in the catheter, and the head end of the second guide wire is provided with a three-claw hook for assisting in grabbing foreign matters; one end of the handle is detachably connected with the tail end of the catheter, the tail end of the second guide wire penetrates through the other end of the handle and extends out of the handle, and a negative pressure suction device is arranged in the handle. The utility model has the advantages that the whole catcher improves the accuracy and stability of catching the foreign matters, the foreign matters are not easy to separate from the sleeve in the catching process, the situation of repeatedly catching the foreign matters is avoided, and the treatment efficiency is improved. The utility model has simple structure, high practicability and convenient popularization and use.

Description

A capture ware for intervention of percutaneous blood vessel intracavity treatment

Technical Field

The utility model relates to the technical field of intravascular interventional medical devices, in particular to a catcher for percutaneous intravascular interventional therapy.

Background

The interventional therapy is a minimally invasive treatment method for treating a local focus of a patient under the guidance of an imaging device by making a micro channel with a diameter of several millimeters on a blood vessel and a skin or through an original pipeline of a human body without operating to expose the focus. With the continuous popularization and promotion of cardiovascular intervention diagnosis and treatment technologies and the wide application of intravascular implant technologies such as central venous catheters, venous transfusion ports and PICCs, foreign matters are generated in blood vessels after trauma of patients or other articles when interventional instruments are broken and catheters fall off, and then the foreign matters need to be taken out.

At present, the conventional gooseneck catcher and the three-ring-shaped foreign body snare utilize a snare device to grasp the head end of a foreign body and take the foreign body out, but the catching capacity of the catcher is limited, sometimes the situation that the foreign body is separated from the snare when the foreign body is grasped and taken out is easy to occur, at the moment, medical personnel need to grasp the foreign body again, the situation that the foreign body is repeatedly caught for many times can occur in the taking-out process, great difficulty is caused to the taking-out process of the foreign body, and the treatment efficiency is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the problems in the prior art, provides a catcher for percutaneous endovascular intervention treatment, and can solve the problems that in the prior art, foreign bodies are easy to separate from a snare when being taken out after being caught, repeated catching may occur in the taking-out process, and the treatment efficiency is reduced.

The technical scheme of the utility model is as follows:

a capture device for percutaneous endovascular intervention, comprising:

the outer wall of the head end of the conduit is provided with a plurality of suckers;

the first guide wire is sleeved in the catheter and is bent at the head end of the catheter to form a snare for grabbing foreign matters;

the second guide wire is sleeved in the catheter, and the head end of the second guide wire is provided with a three-claw hook for assisting in grabbing foreign matters;

one end of the handle is detachably connected with the tail end of the catheter, the tail end of the second guide wire penetrates through the other end of the handle and extends out of the handle, and a negative pressure suction device is arranged in the handle.

Preferably, the first guide wire and the second guide wire are memory alloy wires.

Preferably, the outer wall of the snare and the three-jaw hook is wrapped with a fluorescent coating which can be seen under the radiation.

Preferably, the method further comprises the following steps:

and the conveying mechanism is arranged at one end of the handle, which is far away from the catheter, and is used for conveying the second guide wire.

Preferably, the conveying mechanism includes:

one end of the extension rod is connected with the tail end of the second guide wire;

and one end of the limiting block is connected to the other end of the extension rod and used for limiting the extension rod.

Preferably, a hard tube at one end is arranged at the joint of the catheter and the handle.

Preferably, the detachable connection structure of the handle and the hard tube is in threaded connection.

Preferably, the outer walls of the first guide wire and the second guide wire are wrapped with a hydrophilic coating for reducing surface friction.

Compared with the prior art, the catcher for percutaneous endovascular intervention treatment has the beneficial effects that:

the whole catcher improves the accuracy and stability of catching foreign matters, the first guide wire and the second guide wire for assisting catching are arranged, the foreign matters are sleeved with the snare on the first guide wire firstly during catching, the second guide wire is moved to enable the three-jaw hook to hook the foreign matters, so that the foreign matters are not prone to being separated from the snare during catching, the situation that the foreign matters are caught repeatedly is avoided, the treatment efficiency is improved, the sucking disc is further arranged on the outer wall of the catheter, the inner wall of a blood vessel can be adsorbed during catching, and the catheter is stabilized and cannot move. In addition, the outer walls of the first guide wire and the second guide wire are wrapped with a hydrophilic coating for reducing the surface friction. The first guide wire and the second guide wire can catch foreign matters in blood vessels conveniently, and the guiding capability of the guide wire is improved. The utility model has simple structure, high practicability and convenient popularization and use.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the conveying mechanism of the present invention.

Detailed Description

The utility model provides a catcher for percutaneous endovascular intervention, which is described below with reference to the schematic construction diagrams of fig. 1 to 2, but it should be understood that the scope of protection of the utility model is not limited by the specific embodiment.

Examples

As shown in fig. 1, the utility model provides a catcher for percutaneous endovascular intervention, comprising: catheter 1, first guide wire 2, second guide wire 3, handle 4. The outer wall of the head end of the catheter 1 is provided with a plurality of suckers 11, and the suckers 11 have the function of adsorbing the inner wall of the blood vessel to stabilize the catheter 1 when catching foreign matters; the first guide wire 2 is sleeved in the catheter 1, the first guide wire 2 is bent at the head end of the catheter 1 to form a snare 21 for grabbing foreign matters, and the snare 21 is used for sleeving the foreign matters during grabbing; the second guide wire 3 is sleeved in the catheter 1, the head end of the second guide wire 3 is provided with three-claw hooks 31 for assisting in grabbing foreign matters, and when the snare 21 cannot be used for sleeving the foreign matters or the foreign matters need to be stabilized when being taken out, the foreign matters can be hooked by the three-claw hooks 31; the tail end of connection at pipe 1 can be dismantled to the one end of handle 4, the other end that the tail end of second seal wire 3 passed handle 4 stretches out outside handle 4, be equipped with negative pressure suction device in the handle 4, negative pressure suction device's effect is the sucking disc 11 of being convenient for and is firmly the blood vessel inner wall. A through hole is arranged in the middle of the handle 4 in a penetrating manner, so that the tail end of the second guide wire 3 can conveniently penetrate through the handle 4, and the second guide wire 3 can move in the handle 4. When catching the foreign body, the foreign body is firstly sleeved by the snare 21, and then the second guide wire 3 is moved to enable the three-claw hook 31 to hook the foreign body, so that the stability of catching the foreign body is improved, and the foreign body is not easy to separate from the guide wire in the taking-out process. The pressure is very small when the sucking disc 11 adsorbs, can not cause the injury to the blood vessel inner wall. The catheter 1 is fed into the blood vessel through a catheter sheath.

Further, the first guide wire 2 and the second guide wire 3 are memory alloy wires. At room temperature, the memory alloy wire is straightened into a straight line shape and then sent into a focus, and the memory alloy wire can be in an original shape in the focus and is convenient to send into a vascular cavity. The memory alloy wire has good bending performance, so that the release and the recovery of the catcher are not influenced.

Further, the outer walls of the snare 21 and the three-jaw hook 31 are wrapped with a fluorescent coating which can be seen under radiation. The purpose is to facilitate the radiography in the operation, and the positioning is convenient, and the condition of catching is convenient to observe when the foreign body is caught.

Further, the method also comprises the following steps: a delivery mechanism is arranged at the end of the handle 4 facing away from the catheter 1 for delivering the second guide wire 3. It can play a role of pushing and pulling the second guide wire 3.

Further, as shown in fig. 2, the conveying mechanism includes: an extension rod 5 and a limiting block 6. One end of the extension rod 5 is connected with the tail end of the second guide wire 3; one end of the limiting block 6 is connected to the other end of the extension rod 5 and used for limiting the extension rod 5. Wherein, the diameter of extension rod 5 is the same with the diameter of second seal wire 3, can pass the through-hole of handle 4, plays the effect of extension second seal wire 3, and stopper 6 is loudspeaker form, and the diameter is greater than the effect that the through-hole can play and block.

Furthermore, a hard tube 12 is arranged at the joint of the catheter 1 and the handle 4. The catheter 1 can be better connected to the handle 4.

Further, the detachable connection structure of the handle 4 and the hard tube 12 is a threaded connection. Wherein, the outer wall of the hard tube 12 is provided with external threads, and the inner wall of the joint of the handle 4 is provided with internal threads which are in threaded connection with the inner wall in a matching way.

Furthermore, the outer walls of the first guide wire 2 and the second guide wire 3 are wrapped with a hydrophilic coating for reducing the surface friction. The first guide wire 2 and the second guide wire 3 are convenient to catch foreign matters in blood vessels, the guiding capacity of the guide wire is improved, and the hydrophilic coating can be made of polyurethane urea, polyacrylic acid, polyacrylamide, polyvinyl alcohol, polyacrylic acid-acrylamide and other high polymer or monomer materials.

When the catheter is used, the catheter 1 is conveyed to a position in a blood vessel cavity where foreign matters need to be caught, the negative pressure suction device in the handle is adjusted, the sucker 11 on the catheter 1 adsorbs the inner wall of the blood vessel, the catheter 1 is stabilized and cannot move, the foreign matters are sleeved by the snare on the first guide wire, and then the second guide wire is moved, so that the three-jaw hook hooks the foreign matters to be taken out. The utility model has the advantages that the accuracy and stability of catching foreign matters are improved by the whole catcher, the first guide wire and the second guide wire for assisting catching are arranged, the foreign matters are firstly sleeved by the snare on the first guide wire during catching, and then the second guide wire is moved to enable the three-jaw hook to hook the foreign matters, so that the foreign matters are not easy to be separated from the snare during catching, the situation of repeatedly catching the foreign matters is avoided, the treatment efficiency is improved, the sucking disc is arranged on the outer wall of the catheter, the inner wall of a blood vessel can be adsorbed during catching, and the catheter is stabilized against moving. In addition, the outer walls of the first guide wire and the second guide wire are wrapped with a hydrophilic coating for reducing the surface friction. The first guide wire and the second guide wire can catch foreign matters in blood vessels conveniently, and the guiding capability of the guide wire is improved. The utility model has simple structure, high practicability and convenient popularization and use.

The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. A capture device for percutaneous endovascular intervention treatment, comprising:

the outer wall of the head end of the catheter (1) is provided with a plurality of suckers (11);

the first guide wire (2) is sleeved in the catheter (1), and the first guide wire (2) is bent at the head end of the catheter (1) to form a snare (21) for grabbing foreign matters;

the second guide wire (3) is sleeved in the catheter (1), and the head end of the second guide wire (3) is provided with a three-claw hook (31) for assisting in grabbing foreign matters;

the catheter is characterized in that one end of the handle (4) is detachably connected to the tail end of the catheter (1), the tail end of the second guide wire (3) penetrates through the other end of the handle (4) and extends out of the handle (4), and a negative pressure suction device is arranged in the handle (4).

2. The catcher for percutaneous transluminal intervention according to claim 1, wherein the first guide wire (2) and the second guide wire (3) are memory alloy wires.

3. A trap for percutaneous transluminal intervention according to claim 1, wherein the outer wall of the snare (21), the three-jaw hook (31), is coated with a fluorescent coating that is visible under radiation.

4. The catcher for percutaneous transluminal interventional procedure according to claim 1, further comprising:

and the conveying mechanism is arranged at one end of the handle (4) departing from the catheter (1) and is used for conveying the second guide wire (3).

5. The trap for percutaneous transluminal interventional treatment of claim 4, wherein the delivery mechanism comprises:

one end of the extension rod (5) is connected with the tail end of the second guide wire (3);

and one end of the limiting block (6) is connected to the other end of the extension rod (5) and used for limiting the extension rod (5).

6. A trap for percutaneous transluminal vascular access according to claim 1, characterized in that the connection of the catheter (1) to the handle (4) is provided with an end-piece (12).

7. A trap for percutaneous transluminal intervention according to claim 6, wherein the detachable connection of the handle (4) to the rigid tube (12) is a threaded connection.

8. The catcher for percutaneous transluminal vascular access according to claim 1, wherein the outer walls of the first guide wire (2) and the second guide wire (3) are coated with a hydrophilic coating for reducing surface friction.