CN113648514A - Novel intravascular turnable guide wire and use method thereof - Google Patents

Abstract

The invention relates to a novel intravascular turnable guide wire which comprises a working end and a control end, wherein the working end comprises a guide wire body and a traction wire, the rear end of the guide wire body is provided with a blind hole, the traction wire extends into the guide wire body from the rear end, the front end of the traction wire is connected with a bendable head part of the guide wire body, the bendable head part is a nickel-titanium tube, the control end comprises a first control handle and a second control handle, the second control handle is sleeved on the outer part of the traction wire, the traction wire can be driven by pulling the second control handle, the first control handle is arranged at the tail end of the guide wire body, and the direction of the bendable head part is controlled by rotating the first control handle. The novel guide wire capable of turning in the blood vessel can achieve the purpose of rapid and safe passing in the curved and circuitous coronary artery blood vessel by controlling the guide wire to bend the head of the guide wire, so that the step of plasticity of the guide wire before a medical operation is omitted, the difficulty in the early stage of the operation is greatly reduced, and the operation time is shortened.

Description

Novel intravascular turnable guide wire and use method thereof

Technical Field

The invention relates to a novel intravascular turnable guide wire and a use method thereof, belongs to the field of medical instruments, and provides a steerable guide wire.

Background

At present, coronary heart disease patients in China increase at a rate of 20% each year. Coronary heart disease is treated with Percutaneous Transluminal Coronary Angioplasty (PTCA). PTCA adopts percutaneous puncture method, and makes the balloon catheter pass through the artery and backward move into the coronary artery with pathological change, and makes the hydraulic balloon pressurize and dilate the stenotic coronary artery so as to enlarge the internal cavity of blood vessel, increase myocardial blood supply and relieve coronary ischemia to prevent myocardial infarction. With the maturity of the technology and the application of the coronary artery internal stent, the patient who can treat angina pectoris can greatly reduce the fatality rate of the patient who suffers from acute myocardial infarction by directly PTCA. And has become an important means for treating coronary heart disease.

In the PTCA treatment, the guide wire is one of indispensable consumables, but the circuitous bending of coronary vessels is more, so great difficulty is increased for the guide wire to pass, and doctors need to spend a great deal of time to pass the guide wire to reach the pathological change position, thereby increasing the operation time, increasing the pain of patients and the operation cost and simultaneously increasing the operation risk.

Disclosure of Invention

The invention aims to overcome the defects, provides a novel intravascular turning guide wire, can achieve the purpose of rapid and safe passing in a curved and circuitous coronary vessel by controlling the guide wire to bend the head of the guide wire, and saves the step of plasticity of the guide wire before a doctor performs an operation, thereby greatly reducing the difficulty in the early stage of the operation and shortening the operation time.

The purpose of the invention is realized as follows:

the utility model provides a novel wire can turn in blood vessel, it includes work end and control end, the work end includes seal wire body and traction wire, the blind hole is seted up to seal wire body rear end, and the traction wire stretches into from seal wire body rear end, and the front end of traction wire links to each other with the flexible head of seal wire body head, makes the flexible head carry out the bending through the traction wire, the flexible head is the nickel titanium pipe, the control end includes first brake valve lever and second brake valve lever, second brake valve lever cover can drive the traction wire through pulling second brake valve lever on the traction wire outside for the flexible head is crooked, first brake valve lever sets up in the end of seal wire body, controls the direction of flexible head through rotating first brake valve lever.

Preferably, the guide wire body has an outer diameter of 0.35mm and a length of 1800 mm.

Preferably, the nickel-titanium tube is formed by cutting a nickel-titanium capillary tube on a single side, and a tantalum plating layer is arranged on the surface of the nickel-titanium tube.

A use method of a novel intravascular turnable guide wire comprises the following steps: this seal wire is controlled to both hands, and wherein a hand holds first brake valve lever, and the second brake valve lever is held to the other hand, when the head of seal wire body advances to coronary artery blood vessel fork, slowly pulls the second brake valve lever backward and does not loosen, just can drive the traction wire and make the flexible head of seal wire crooked, and the bending angle can be adjusted through the dynamics of pulling the second brake valve lever, and the seal wire just can realize controlling the turn and get into blood vessel fork like this.

The novel intravascular turnable guide wire has the following advantages:

this novel endovascular guide wire that can turn has abandoned fixed seal wire structure, has adopted the overall structure's that NITI pipe and traction wire are connected design, such structure is simpler to still remain the compliance and the rigidity of current seal wire on the basis of having reduced the complicated technology of original seal wire, the development also has abandoned the design of original noble metal spring, adopt the technology of plating tantalum on NITI tubular product, like this when reduce cost, also greatly reduced the risk that seal wire and spring drop. The steerable guide wire head is formed by cutting a NITI capillary single side, so that a doctor can bend the head of the steerable guide wire to achieve the purpose of fast and safely passing in a curved and circuitous coronary vessel, and the step of plasticity of the guide wire before the doctor performs an operation is omitted, so that the difficulty in the early stage of the operation is greatly reduced, and the operation time is shortened.

Drawings

Fig. 1 is a schematic structural diagram of a novel intravascular turnable guide wire according to the present invention.

Fig. 2 is a schematic view of the bending of the bendable head at the front end of the guidewire body in fig. 1.

In the figure: the guide wire comprises a guide wire body 1, atraction wire 2, afirst control handle 3, a second control handle 4 and abendable head 5.

Detailed Description

Referring to fig. 1 and 2, the present invention relates to a novel intravascular steerable guidewire comprising a working end and a control end.

The working end comprises a guide wire body 1 and atraction wire 2, a blind hole is formed in the rear end of the guide wire body 1, thetraction wire 2 extends into the guide wire body from the rear end of the guide wire body 1, the front end of thetraction wire 2 is connected with abendable head 5 at the head of the guide wire body 1, thebendable head 5 is bent through thetraction wire 2, the guide wire body 1 can be controlled, the outer diameter of the guide wire body 1 is 0.35mm, the length of the guide wire body is 1800mm, thebendable head 5 is a nickel-titanium tube and is formed by cutting a single side of a nickel-titanium capillary tube, and a tantalum plating layer is arranged on the surface of the nickel-titanium tube.

The control end includes firstbrake valve lever 3 and second brake valve lever 4, second brake valve lever 4 cover is on 2 outsides of traction wire, can drivetraction wire 2 through pulling second brake valve lever 4 forflexible head 5 is crooked, and the bending angle can be adjusted through the dynamics of pulling second brake valve lever 4, firstbrake valve lever 3 sets up in the end of seal wire body 1, controls the direction of seal wire head through rotating firstbrake valve lever 3, realizes turning to of seal wire, just so can easily through the tortuous coronary artery of bending.

The use method of the novel intravascular turnable guide wire comprises the following steps:

this seal wire is controlled to both hands, and wherein a hand holds first control handle, and the second control handle is held to the other hand, when the head of seal wire body advances to the coronary artery bifurcation mouth, slowly pull the second control handle backward and do not need to loosen, just can drive the traction wire and make the flexible head of seal wire crooked, and the bending form is shown in fig. 2, and the bending angle can be adjusted through the dynamics of pulling the second control handle, and the seal wire just can realize controlling the turn and get into the blood vessel fork like this. Because the guide wire bending head is single-sided cutting, the bending direction is only one, so the turning direction can be adjusted by rotating the control handle.

Claims (4)

1. The utility model provides a novel endovascular turn seal wire which characterized in that: it includes work end and control end, the work end includes seal wire body and traction wire, the blind hole is seted up to seal wire body rear end, and the traction wire stretches into from seal wire body rear end, and the front end of traction wire links to each other with the flexible head of seal wire body head, makes the flexible head crooked through the traction wire, the flexible head is the nickel titanium pipe, the control end includes first brake valve lever and second brake valve lever, second brake valve lever cover can drive the traction wire through pulling second brake valve lever on the traction wire outside for the flexible head is crooked, first brake valve lever sets up in the end of seal wire body, controls the direction of flexible head through rotating first brake valve lever.

2. The novel endovascular curvable guidewire as defined in claim 1, wherein: the external diameter of wire body is 0.35mm, and length is 1800 mm.

3. The novel endovascular curvable guidewire as defined in claim 1, wherein: the nickel-titanium tube is formed by cutting a single side of a nickel-titanium capillary tube, and a tantalum plating layer is arranged on the surface of the nickel-titanium tube.

4. A novel intravascular turnable guide wire using method is characterized in that: the using method comprises the following steps: this seal wire is controlled to both hands, and wherein a hand holds first brake valve lever, and the second brake valve lever is held to the other hand, when the head of seal wire body advances to coronary artery blood vessel fork, slowly pulls the second brake valve lever backward and does not loosen, just can drive the traction wire and make the flexible head of seal wire crooked, and the bending angle can be adjusted through the dynamics of pulling the second brake valve lever, and the seal wire just can realize controlling the turn and get into blood vessel fork like this.

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