KR101731187B1 - Ultrasonic identifiable catheter - Google Patents

Ultrasonic identifiable catheter Download PDF

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Publication number
KR101731187B1
KR101731187B1 KR1020150160777A KR20150160777A KR101731187B1 KR 101731187 B1 KR101731187 B1 KR 101731187B1 KR 1020150160777 A KR1020150160777 A KR 1020150160777A KR 20150160777 A KR20150160777 A KR 20150160777A KR 101731187 B1 KR101731187 B1 KR 101731187B1
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KR
South Korea
Prior art keywords
catheter
tube
identifier
pattern
acoustic resistance
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KR1020150160777A
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Korean (ko)
Inventor
양승윤
신명준
정영수
Original Assignee
부산대학교 산학협력단
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Priority to KR1020150160777A priority Critical patent/KR101731187B1/en
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Publication of KR101731187B1 publication Critical patent/KR101731187B1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0043—Catheters; Hollow probes characterised by structural features

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

A catheter capable of ultrasonic identification is disclosed. The catheter includes a catheter tube; And an identifier having an acoustic resistance higher than the acoustic resistance of the material of the catheter tube. With such a catheter, the in-body insertion position of the catheter can be identified by the ultrasound imaging means by an identifier having an acoustic resistance higher than the acoustic resistance of the material of the catheter tube.

Description

[0001] ULTRASONIC IDENTIFIABLE CATHETER [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a catheter, and more particularly, to a catheter capable of identifying an ultrasonic catheter inserted into a human body as an ultrasonic wave.

Catheter is a thin tube made by extrusion molding using medical materials and is used for various functions in medical field. A catheter is a medical device that inserts into a human body when handling a bottle or performing surgery. It can be applied in various fields such as cardiovascular, urology, gastrointestinal, neurovascular, ophthalmology depending on the material and method of making. The catheter can be inserted into the body's rivers, tubes and blood vessels. It is used when administering drainage, liquids, gases, or by using surgical instruments. In addition, various types of catheters are used depending on the type of catheter. The process of insertion of the catheter is called catheterization. The catheter can be adjusted to a certain degree of hardness, depending on the intended use. In most cases, a thin and flexible tube is used. A catheter that remains in the body, whether transient or permanent, is called an indwelling catheter. A permanently inserted catheter is called a perm cat.

Since the position of the catheter is very important, its position must be checked after catheter insertion. Currently, x-rays are used to confirm the position of the catheter, but it takes a long time to confirm the catheter. If the catheter is misaligned, it is troublesome to perform the catheter again .

To solve this problem, a variety of medical devices have been developed to identify the catheter tip. However, since these medical devices are expensive, they are difficult to use in many hospitals.

It is an object of the present invention to provide a catheter configured to overcome the limitations of the prior art and to identify a tip position of a catheter using ultrasound devices in use in many hospitals.

The present invention relates to a catheter tube; And an identifier having an acoustic resistance higher than the acoustic resistance of the material of the catheter tube. Wherein the identifier may be located in either the catheter tube, the tube outer surface, or the tube inner surface.

Acoustic impedance refers to the ratio between the velocity of the medium and the sound pressure. Ultrasonography apparatus transmits the pulse wave into the human body in a tissue having a difference in acoustic resistance, amplifies and converts the reflected signal by a computer Image.

In the present invention, the catheter includes an identifier having an acoustic resistance higher than the acoustic resistance of the material of the catheter tube, so that the insertion position of the catheter in the body can be identified by the ultrasound imaging means.

In particular, the identification of the catheter tip is important, and this identifier of the present invention is characterized by being located at the catheter tip.

The difference in acoustic resistance value between the catheter tube and the identification material is that when the catheter inserted into the body is imaged by an ultrasound imaging device outside the body, the identification material is visualized from the catheter material or body material It is a difference in degree of discrimination.

In particular, the identifier of the present invention forms a pattern, and the formed pattern is characterized by a pattern in which the shape or number of the pattern is incrementally or visually changed according to the direction of the catheter tube. Incremental means increasing pattern, and diminishing means decreasing pattern.

The pattern forms at least two groups of patterns consisting of points or lines, and the number of patterns in the group of patterns can be increased or decreased along the direction of the catheter tube.

This incremental or pointed pattern allows for easy identification of the position of the catheter in the body of the catheter. Ultrasonic imaging devices are difficult to identify the position of a catheter that can be bent and inserted as a device for imaging a two-dimensional vertical cross-section. However, the incremental or point marker pattern proposed in the present invention can help to distinguish the middle and the end of the catheter in the ultrasound device, and to ascertain how much the length remains until the catheter tip. It is also possible to judge whether or not the object is bent.

The identifier pattern of the present invention can be formed by inserting a transparent wire having an opaque portion that is opaque and altered into the catheter tube, or by locating it on the tube surface or the tube surface. The transparent wire has a group of patterns formed by points, and the number of points of the pattern group may increase or decrease according to the direction of the transparent wire. The transparent wire may be glass fiber or optical fiber, and the opaque portion may be formed by heat treatment with a laser.

Alternatively, a transparent sheet with an opaque modified opaque portion may be applied to the catheter tube and inserted into the catheter tube, or placed on the tube surface or in the tube surface. Wherein the transparent sheet has a group of patterns formed of parallel lines and is inserted into the tube through the catheter tube or placed on an outer surface of the tube or an inner surface of the tube to form an annular pattern, Increase or decrease. The transparent sheet is made of glass, and the opaque portion can be formed by heat treatment with a laser.

The catheter of the present invention allows identification of the insertion position of the catheter by the ultrasound imaging means by an identifier having an acoustic resistance higher than the acoustic resistance of the material of the catheter tube.

1 is a view showing a state in which a catheter bent in one direction is ultrasonically photographed.
2 is a conceptual diagram illustrating a catheter capable of identifying an ultrasonic according to the present invention.
FIG. 3 shows an embodiment of an identifier of a catheter capable of identifying an ultrasonic wave according to the present invention.
4A and 4B show another embodiment of an identifier of a catheter capable of ultrasound discrimination according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the term "comprises" or "having ", etc. is intended to specify that there is a feature, step, operation, element, part or combination thereof described in the specification, , &Quot; an ", " an ", " an "

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

The catheter according to the present invention is inserted into a human body when the catheter is handled or operated, and when the catheter is inserted into the human body, the end of the catheter must be inserted to a desired position in the human body. Such a catheter is configured to have a different acoustic resistance value from the tissue in the human body, so that the catheter can be visually identified from the tissue in the human body through the image taken through the ultrasound imaging apparatus.

The ultrasound imaging apparatus transmits an ultrasound signal through the ultrasound probe 10 which oscillates an ultrasound signal. The ultrasound signal transmitted into the human body is reflected at a discontinuous boundary of the tissue in the human body. The reflected ultrasound signal is amplified by a computer , And displays an image. The image may be formed as a 2D or 3D image, but in the case of a 3D image, a 2D image is formed based on a plurality of 2D images, so that a 2D image is a basis for final image acquisition. The 2D image shows the cross-sectional image of the object to be imaged in real time.

When the catheter inserted into the human body is bent in one direction as shown in FIG. 1, the ultrasonic signal oscillation region of the ultrasonic probe 10 is inserted into the catheter If the angled portion is photographed, a cross-sectional image of the angled portion can be obtained, whereby there is a problem that the bent portion of the catheter can be recognized as the end of the catheter.

Accordingly, the present invention provides a catheter capable of identifying the location of the end of the catheter.

2 is a conceptual diagram illustrating a catheter capable of identifying an ultrasonic according to the present invention.

Referring to FIG. 2, the catheter capable of identifying the ultrasonic waves according to the present invention includes a catheter tube 100 and an identifier 200.

The catheter tube 100 is a thin tube made of a medical material by extrusion molding. The catheter tube 100 may be made of materials such as natural polymers, synthetic polymers, metals, ceramics, and composites. As an example, the catheter tube 100 may be a natural latex. The inlet of the catheter tube 100 is connected to a medical instrument or a medical instrument, and the end of the catheter tube 100 is inserted into the human body. The end of the catheter tube 100 inserted into the human body is inserted into a desired site within the human body for dealing with a bottle or for operation.

Meanwhile, the catheter tube 100 has a predetermined acoustical resistance value, and the acoustic resistance value of the catheter tube 100 is different from the tissue in the human body. Thus, the ultrasound probe 10 of the ultrasound imaging apparatus transmits ultrasound signals The ultrasound signal is reflected by the acoustic resistance value of the catheter tube 100 and the cross-sectional image of the catheter tube is displayed in real time through the 2D image of the ultrasound imaging apparatus. That is, the catheter tube 100 inserted into the human body is distinguished from the tissue in the human body and displayed on the image acquired by the ultrasound imaging apparatus.

The identifier 200 allows the location of the end of the catheter tube 100 inserted into the body through the ultrasound imaging device to be identified. The identifier 200 must be identifiable from the catheter tube 100 for which the identifier has an acoustical resistance value that is different from the acoustical resistance value of the catheter tube 100 and the acoustic resistance value of the identifier 200 is inserted into the body The identifier 200 may have a value that can identify the identifier 200 from the catheter material or body material in the captured image when the catheter tube 100 is taken by the ultrasound imaging device outside the body. This identifier 200 may be located either inside the catheter tube 100, outside the tube, or inside the tube.

The identifier 200 is located at the end of the catheter tube 100 to identify the position of the end of the catheter tube 100 and forms a predetermined pattern, Or a pattern that changes pointwise. That is, the pattern has a pattern in which the shape or number of the catheter tube 100 is gradually or gradually changed from one point of the catheter tube 100 toward the end of the catheter tube 100. For example, the pattern may form two or more pattern groups of points, lines or faces, in which case the number of patterns in the pattern group may increase or decrease with the direction of the catheter tube 100.

FIG. 3 shows an embodiment of an identifier of a catheter capable of identifying an ultrasonic according to the present invention.

Referring to FIG. 3, the identifier 200 may comprise a transparent wire 210 having an opaque modified opaque portion inserted into the catheter tube 100. In this case, the transparent wire 210 may have a pattern group 220 consisting of points, and the number of points of each pattern group 220 may be a form that increases or decreases according to the direction of the transparent wire 210 For example, a pattern group 220 with an increased number of points may be located at the end of the catheter tube 100. For example, the transparent wire 210 may be a glass fiber or an optical fiber, and the opaque portion may be formed by heat treatment with a laser and may be formed as a dot to form each pattern group 220.

4A and 4B show another embodiment of an identifier of a catheter capable of ultrasound discrimination according to the present invention.

Referring to FIG. 4A, the identifier 200 may comprise a transparent sheet 230 having an opaque modified opaque portion inserted into the catheter tube 100. In this case, the transparent sheet 230 may have a group of patterns 240 of parallel lines, and may be cylindrically-shaped as shown in FIG. 4B and inserted into the interior of the catheter tube 100 so that each line forms an annular pattern And the number of lines of each pattern group 240 may be increased or decreased along the longitudinal direction of the transparent sheet 230. For example, ). ≪ / RTI > For example, the transparent sheet 230 may be formed of a glass material, the opaque portions may be formed by heat treatment with a laser, and may be formed of lines to form respective pattern groups 240.

The shape of the identifier 200 shown in FIG. 3, FIG. 4A and FIG. 4B is illustrative and not limited thereto, and may be a pattern of various shapes in addition to the dot and line pattern.

When the catheter capable of identifying the ultrasonic waves according to the present invention is inserted into the human body, the position of the end of the catheter tube 100 can easily be confirmed by using the ultrasonic imaging apparatus.

That is, the catheter tube 100 inserted into the human body includes the identifier 200, and a point, a line or a surface pattern forming the pattern group 210, 240 of the identifier 200 is formed in the catheter tube 100, The position of the end of the catheter tube 100 can be confirmed by checking the number of patterns displayed on the image taken through the ultrasound imaging apparatus.

By confirming the number of patterns in this process, it is possible to confirm how much length is remaining to the end of the catheter tube 100, and even if the catheter tube 100 is bent, the position of each pattern group It is possible to confirm the bent state of the catheter tube 100 and confirm the position of the end of the bent catheter tube 100. [

Therefore, by using the catheter capable of identifying the ultrasonic waves according to the present invention, it is possible to easily and accurately check the position of the end of the catheter inserted into the human body. Accordingly, the process of inserting the catheter to the desired position in the body for the operation using the catheter It can be done accurately and quickly without errors.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims. It can be understood that it is possible.

100: catheter tube 200: identifier

Claims (12)

Catheter tube; And an identifier having an acoustic resistance higher than the acoustic resistance of the material of the catheter tube,
Characterized in that the identifier forms a pattern and the formed pattern has a pattern in which the shape or number of the formed pattern changes incrementally or tangentially according to the direction of the catheter tube,
Wherein the pattern forms a pattern group consisting of one or more points, lines or faces, the catheter includes at least two pattern groups, and the number of patterns in the pattern group gradually increases or decreases along the direction of the catheter tube Features,
Ultrasonic identification catheter. The method according to claim 1,
Characterized in that the identifier is located in the catheter tube, the tube outer surface, and the tube inner surface.
Ultrasonic identification catheter. The method according to claim 1,
Characterized in that the identifier is located in a catheter tip.
Ultrasonic identification catheter. The method according to claim 1 or 3,
The difference in acoustic resistance value between the catheter tube and the identifier is that when the catheter inserted into the body is imaged by an ultrasound imaging device outside the body, the identifier is visually identified from the catheter substance or body material in the captured image And the difference between the first and second states is < RTI ID = 0.0 >
Ultrasonic identification catheter. delete delete Catheter tube; And an identifier having an acoustic resistance higher than the acoustic resistance of the material of the catheter tube,
Characterized in that a transparent wire with an opaque modified opaque portion is inserted into the catheter tube or located on the tube surface or in the tube surface.
Ultrasonic identification catheter. 8. The method of claim 7,
Wherein the transparent wire has a group of patterns made up of points and the number of points in the group of patterns is increased or decreased along the direction of the transparent wires.
Ultrasonic identification catheter. 8. The method of claim 7,
Wherein the transparent wire is a glass fiber or an optical fiber, and the opaque portion is formed by heat treatment with a laser.
Ultrasonic identification catheter. Catheter tube; And an identifier having an acoustic resistance higher than the acoustic resistance of the material of the catheter tube,
Characterized in that a transparent sheet with an opaque modified opaque portion is placed in the tube insert, or on the tube surface or in the tube surface,
Ultrasonic identification catheter. 11. The method of claim 10,
Wherein the transparent sheet has a group of patterns formed of parallel lines and is inserted into the tube through the catheter tube or placed on an outer surface of the tube or an inner surface of the tube to form an annular pattern, Lt; RTI ID = 0.0 > and / or < / RTI &
Ultrasonic identification catheter. The method according to claim 10 or 11,
Wherein the transparent sheet is formed of a glass material, and the opaque portion is formed by heat treatment with a laser.
Ultrasonic identification catheter.
KR1020150160777A 2015-11-17 2015-11-17 Ultrasonic identifiable catheter KR101731187B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210110076A (en) * 2020-02-28 2021-09-07 중앙대학교 산학협력단 Catheter with ultrasonics wave projection plane and system for ultrasonics wave inspector including the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004283289A (en) 2003-03-20 2004-10-14 Kawasumi Lab Inc Balloon catheter with ultrasonic marker, and chemical injection/blood vessel insertion catheter
JP2008513125A (en) * 2004-09-17 2008-05-01 アクラレント インコーポレイテッド Devices and methods for dilating and modifying sinuses and other intranasal or paranasal cavities
JP2015008745A (en) * 2013-06-26 2015-01-19 国立大学法人東京農工大学 Insertion body system and insertion body

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004283289A (en) 2003-03-20 2004-10-14 Kawasumi Lab Inc Balloon catheter with ultrasonic marker, and chemical injection/blood vessel insertion catheter
JP2008513125A (en) * 2004-09-17 2008-05-01 アクラレント インコーポレイテッド Devices and methods for dilating and modifying sinuses and other intranasal or paranasal cavities
JP2015008745A (en) * 2013-06-26 2015-01-19 国立大学法人東京農工大学 Insertion body system and insertion body

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210110076A (en) * 2020-02-28 2021-09-07 중앙대학교 산학협력단 Catheter with ultrasonics wave projection plane and system for ultrasonics wave inspector including the same
KR102403040B1 (en) 2020-02-28 2022-05-27 중앙대학교 산학협력단 Catheter with ultrasonics wave projection plane and system for ultrasonics wave inspector including the same

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