KR20170105361A - Introducer and vascular access method using thereof - Google Patents

Abstract

The present invention is intended to provide a method for stably approaching a target vessel using a guide duct of a micro-sheath structure.
In order to achieve the above object, the present invention provides a sheath portion having a tubular shape having an inner diameter of 0.016 to 0.020 inches and an outer diameter of 0.033 to 0.038 inches and serving as a guidewire function and a tool for injecting or extracting a liquid material into one end of the sheath portion in the longitudinal direction A guide conduit is disclosed that includes an adapter portion integrally formed therewith.

Description

[0001] INTRODUCER AND VASCULAR ACCESS METHOD USING THEREOF [0002]

The present invention relates to a medical guiding catheter and a method for accessing a blood vessel using the guiding catheter. More particularly, the present invention relates to a method for stably approaching a target vessel area using a guiding catheter having a micro-sheath structure.

The guide wire is collectively referred to as an angiographic catheter or sheath, as well as a medical instrument used to direct various instruments necessary for the procedure to a target vessel.

These guide wires are made of stainless steel, which is mainly made of corrosion resistant stainless steel, and super-elastic metal, which is excellent in stability, and coated with a resin such as polyvinyl chloride to improve durability.

Here, catheters and sheaths are thin, well-curved tube-shaped medical instruments that are inserted into the human body's steel, tubes and blood vessels to be used for various treatments necessary for diagnosis and treatment.

Among these, a catheter is a kind of catheter that is used to examine the lesion cell tissue in the body, to inject drugs into the body, to remove the liquid from the body cavity, or to expand the stenosed lumen. In addition, the sheath serves as a passageway for allowing various types of catheters to freely enter and exit through the guide wire, which is fixed to the blood vessel.

On the other hand, micro-sheath is a micro-sheath with small size of blood vessels, calcification or severe arteriosclerosis and disease, and it is difficult to insert and access the general catheter by using ultrasound or radiological contrast agent. Is a device that induces the general sheath to approach the intended vessel area step by step.

That is, in order to approach the micro-sheath to the blood vessel at the target site, the micro-guide wire is inserted into the blood vessel through the puncture needle, and when it is determined that the micro-guide wire has successfully entered, micro- Then, the micro-guide wire is taken out and a certain amount of blood is sucked through the micro-sheath to confirm that the target blood vessel is properly approached.

Next, the general guidewire is inserted through the micro-sheath, and the micro-sheath inserted into the blood vessel is taken out according to the guidance and guidance of the guidewire, and then the general sheath is inserted, .

However, this conventional method is complicated and troublesome because it repeats the process of inserting or removing the sheath and guide wire, and gives a great pain to the patient. If an untrained doctor performs the procedure, blood vessel damage or perforation may occur and an emergency There is also a problem.

KR1020140074230E (2014.06.17) KR1020130130912A (2013.12.03) KR101185944 B1 (September 19, 2012) KR100938353 B1 (2010.01.15) KR101062613 B1 (Aug. 30, 2011)

Accordingly, the present inventor has intensively focused on solving the limitations and problems of a conventional vascular access method using guidewire and sheath in consideration of the above-mentioned matters, so that the original function and role of guiding a sheath into a target vessel Of course, a new guiding conduit (hereinafter referred to as a " guiding conduit ") is used to avoid confusion and confusion with the terminology of existing micro-sheaths or general sheaths, As a result of which the inventors of the present invention have invented the present invention.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a guiding catheter that can perform a function and a role of sucking blood together with a function and a role for guiding a sheath to a target vessel, It provides a simple and easy approach.

Herein, the technical object and object to be solved by the present invention are not limited to the above-mentioned technical object and purpose, but another technical object and purpose not mentioned can be understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a method of manufacturing an electrochemical device including a tubular member having an inner diameter of 0.016 to 0.020 inches and an outer diameter of 0.033 to 0.038 inches, And an adapter part integrally formed to connect a sheath part serving as a role and a tool for injecting or extracting a liquid material into one end of the sheath in the longitudinal direction.

As a result, the function and role of the suction tube for aspirating the blood can be performed concurrently with the functional role of the guidewire guiding the general sheath or the like to the target blood vessel.

Further, in a preferred embodiment of the present invention, the coating layer is formed by coating the inner peripheral edge and the outer peripheral edge of the sheath portion with a hydrophilic material, so that blood or body fluid containing the fat component can smoothly flow through the hollow of the sheath portion, When the catheter or the general sheath is inserted into the blood vessel, the lubrication can be imparted to induce and guide it more smoothly.

The microconduit wire is inserted into the blood vessel through the puncture needle, and the microconduit wire is inserted into the blood vessel along the microconduit wire. Then, the microconduit wire is inserted into the blood vessel, Removing the adapter from the guide conduit, and inserting the common sheath into the blood vessel along the remaining sheath portion; withdrawing the adapter from the guiding conduit by connecting a tool for injecting or extracting liquid material into the adapter of the guiding conduit, The present invention provides a blood vessel access method using a guide conduit.

This minimizes the process of inserting or withdrawing alternately the micro-sheath, guidewire, and common sheath, as well as simplifying and easy access to blood vessels that can not be accessed accurately by ultrasound or fluoroscopic guidance. , And medical accidents such as vascular damage and perforation can be greatly reduced.

An embodiment of the present invention having the means and structure for achieving the object and solution of the technical object as described above has a function and a role of stably inducing the common sheath and the like to the target blood vessel region, And thus the process of inserting or removing the sheath and the guide wire alternately can be minimized.

Therefore, blood vessels that can not be accessed accurately by ultrasound or fluoroscopic contrast can be easily and easily accessed. This makes it possible to perform the procedure more efficiently and easily, alleviates the suffering of the patient, Can greatly reduce medical accidents.

Here, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view showing an exaggerated guide conduit according to an embodiment of the present invention.
2 is a longitudinal sectional view showing an exaggerated guide conduit according to an embodiment of the present invention.
3 is an enlarged cross-sectional view exaggerating a guide conduit according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described more specifically with reference to the accompanying drawings.

Prior to this, the following terms are defined in consideration of the functions of the present invention, and they are to be construed to mean concepts that are consistent with the technical idea of the present invention and interpretations that are commonly or commonly understood in the technical field of the present invention.

In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention.

Hereinafter, the attached drawings are exaggerated or simplified in order to facilitate understanding and clarification of the structure and operation of the technology, and it is to be understood that each component does not exactly coincide with the actual size.

In addition, when a part includes an element, it does not exclude other elements unless specifically stated otherwise, but may include other elements.

1 to 3, the guiding conduit 10 according to the embodiment of the present invention comprises a sheath 11 and an adapter 13.

The sheath portion 11 is formed in a tubular shape having a long length and a small diameter so as to serve also as a function and role of a guide wire and a suction tube.

That is, the sheath portion 11 may have a tube shape with an inner diameter of 0.016 to 0.020 inch and an outer diameter of 0.033 to 0.038 inch.

Here, the inner diameter of the sheath portion 11 is preferably 0.018 inches, the outer diameter thereof is preferably 0.035 inches, and it is preferable that the sheath portion 11 is made of a transparent material so that the shape of the aspirate can be easily observed.

The sheath portion 11 can be formed of a conventional medical material having flexibility and sufficient flexibility such as PVC, PP, PE, EVA, polyurethane, PEEK, EFEP fluorine resin and nylon 12 or PEBA-type TPE , But is not limited thereto.

A coating layer 12 coated with a hydrophilic material is formed on the inner periphery and the outer periphery of the sheath portion 11, respectively.

That is, the coating layer 12 induces blood or body fluids containing the fat component to smoothly flow through the hollow of the sheath portion 11, and lubricating when a general sheath or catheter is inserted into the blood vessel, Guidance and guidance.

Particularly, it is preferable to form a coating layer 12 covering hydrophilic (or water-soluble) macromolecular material exhibiting lubricity with a general sheath, a catheter, etc. on the surface of the sheath portion 11 which is in contact with a general sheath, catheter,

As a result, when the surface of the sheath portion 11 is brought into contact with blood or physiological saline or the like, the coefficient of friction is reduced and lubricity is imparted and the slidability is further improved. As a result, indentability, harvestability, Lt; / RTI >

Here, examples of the hydrophilic polymer material include natural or synthetic high molecular materials or derivatives thereof.

Particularly, it is preferable to use a cellulose-based polymer material (hydroxypropylcellulose), a polyethylene oxide-based polymer material (polyethylene glycol), a maleic anhydride-based polymer material (maleic anhydride copolymer such as methylvinylether maleic anhydride copolymer) The material (polyacrylamide), water-soluble nylon and the like are preferable because a low coefficient of friction can be stably obtained.

The adapter portion 13 is integrally formed to connect a tool for injecting or extracting liquid material into one end portion of the sheath portion 11 in the longitudinal direction.

That is, the adapter unit 13 is formed so as to be able to easily connect and detach the syringe or the suction device for sucking blood.

The sheath portion 11 is formed by a method such as extrusion using an extruder and the adapter portion 13 is formed in a shape having an inner diameter and an outer diameter larger than inner and outer diameters of the sheath portion 11, Or may be formed integrally with each other by a method such as double extrusion molding or the like.

The adapter unit 13 may be formed of ordinary medical plastics based on PVC, PP, PE, or EVA, but is not limited thereto.

With the guide conduit 10 according to the embodiment of the present invention configured as described above, a desired blood vessel site can be easily and easily accessed.

Specifically, a puncture needle is inserted into a blood vessel, a micro guide wire is inserted into a blood vessel, and the guide conduit 10 of the present invention is inserted into a blood vessel according to the guidance and guidance of the micro guide wire, The wire is taken out of the blood vessel, and a syringe or a suction device, which is a tool for injecting or extracting a liquid substance, is connected to the adapter portion 13 of the guide conduit, and then the blood is sucked using the syringe or the suction device.

Thereafter, the syringe or the suction device is separated from the guide conduit 10, and the adapter portion 13 is separated or cut off. In this case, according to the guidance and guidance of the remaining sheath portion 11, a separate ordinary sheath or catheter serving as a passageway function for moving the instruments for operation can be naturally inserted into the blood vessel.

Since the guide conduit 10 according to the embodiment of the present invention also serves as a function and role of the guide wire and the suction tube, it is possible to minimize the troublesome process of alternately inserting or removing the ordinary sheath, the catheter, There is an advantage and a special advantage that can be easily accessed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments or constructions. Various changes and substitutions may be made without departing from the spirit and scope of the invention. It will be obvious to those skilled in the art that the present invention can be widely applied to other embodiments.

Therefore, it is to be understood that modifications and variations of the features of the present invention are intended to be included within the spirit and scope of the present invention.

10: guide wire 11: sheath portion
12: coating layer 13: adapter part

Claims (6)

A sheath portion formed in a tubular shape and serving also as a function and role of a guide wire and a suction pipe; And
An adapter unit for connecting a tool for injecting or extracting a liquid material into one end of the sheath in the longitudinal direction;
. ≪ / RTI >
The method according to claim 1,
And a coating layer of a hydrophilic material is formed on the inner periphery of the sheath portion.
The method according to claim 1,
And a coating layer of a hydrophilic material is formed on the outer periphery of the sheath portion.
The method according to claim 1,
Wherein the sheath has an inner diameter of 0.016 to 0.020 inch and an outer diameter of 0.033 to 0.038 inch. Placing a micro-guide wire through a puncture needle inserted into a blood vessel into a blood vessel;
Inserting the guiding conduit according to any one of claims 1 to 4 into the blood vessel along the micro-guide wire, and then extracting the micro-guide wire from the blood vessel;
Connecting a tool for injecting or extracting liquid material into the adapter portion of the guide conduit to suck blood; And
Removing a tool and an adapter for injecting or extracting the liquid material from the guide conduit, and inserting a common sheath into the blood vessel along the remaining sheath;
The method comprising the steps of:
6. The method of claim 5,
Wherein the sheath portion serves as a passageway function for accessing and manipulating the instruments for the procedure.

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