KR102018243B1 - Catheter pullback connection joint system - Google Patents

Abstract

The present invention relates to a catheter pullback connection joint system. The present invention provides a technology that simplifies the connection structure between the tether and the pullback, and eliminates the need for a separate cable for electrically connecting the pullback device and the catheter, thereby making the structure compact, making it possible to operate stably, making the manufacture easy and reducing the manufacturing cost.

Description

Catheter pullback connection joint system

The present invention relates to a catheter pullback connection joint system.

Medical imaging is needed in many medical fields to diagnose and treat lesions.

An intravascular ultrasound (IVUS) that diagnoses an image by using an ultrasound is a method of identifying a blood vessel state in a medical image. Intravascular ultrasound (IVUS) is used not only in the coronary arteries but also in peripheral blood vessels using catheters, especially when used in the heart, called coronary artery imaging. Such a medical image is useful for diagnosis and treatment because it can identify the state in the blood vessel.

Intravascular ultrasound uses ultrasound transducers in the blood vessels for imaging, so the diameter of the ultrasound transducers should be less than 1mm, and the frequency used to obtain high resolution images should be high frequency in the 20-100 MHz band. That is, the device should be able to transmit and receive ultrasonic waves of small size and high frequency.

Intravascular images can be viewed directly inside the vessel by placing a catheter directly into the vessel, allowing more accurate procedures as well as understanding the vessel. In particular, the catheter is inserted into the blood vessel and the target area is photographed to accurately diagnose internal conditions such as arteriosclerosis and calcification of the vessel wall.

Another technique is optical tomography (OCT), which is based on optical technology. Such a method requires one or more optical fibers to transmit an optical signal along an axis between the image diagnosis site and the image detector.

As another technique, photoacoustic tomography (PhotoAcoustic Tomography) technology is a technique for imaging a non-invasive biological tissue using a photoacoustic effect. Photoacoustic tomography imaging technology has the advantage of mixing optical image characteristics and ultrasonic image characteristics by measuring and converting electromagnetic waves into ultrasonic waves.

Such image diagnosis technology has been applied in many fields, such as in the digestive system, cardiovascular system such as coronary arteries, peripheral and neurovascular system, skin, eyes, genital system, breast tissue, liver tissue and the like. In particular, cardiovascular imaging using ultrasound or optical tomography imaging is used to determine the structure and composition of arterial plaques.

A catheter system equipped with a pullback device is used to diagnose the more precise and various lesions in the vascular series by combining the above imaging techniques. In such a catheter system, the catheter transmits and receives light and ultrasonic signals from the body, and the signal is output through the imaging device via a pullback device for transporting and rotating the catheter.

In general, unlike a catheter system that provides one image through an optical signal or an ultrasonic signal, such a catheter system requires the use of an optical fiber or an electric signal line between the catheter and the pullback device for complex optical and ultrasonic signal transmission. There is a difficulty in placing the accessory in a compact space between the catheter and the pullback device. Therefore, the optical fiber and the electric signal line is disposed in the tube along the length of the catheter, thereby increasing the size of the catheter structure to be inserted into the blood vessel. In addition, when the catheter is restricted to rotate and the catheter is forcibly rotated, the optical fiber and the electric signal line may be twisted or disconnected, causing a system failure or a medical accident due to a wrong signal transmission.

Therefore, there is a need to solve the above problem by simplifying the structure in connecting the catheter and the pullback device.

The present invention provides a technique that can simplify the connection structure of the catheter and pullback.

The catheter pullback connection joint system according to the present invention includes a tube provided with an electrical signal line and an optical signal line, the catheter outputs or receives an electrical signal and an optical signal for a sound wave signal; A connector coupled through the tube, the connector including a first conductive member to exchange electrical signals with respect to a sound wave signal, wherein the electrical signal line is electrically connected to the first conductive member; A pullback device through which the tube is coupled to guide rotation and movement of the catheter; And an adapter installed in the pullback device and provided with an accommodation portion for accommodating the connector, wherein the pullback device includes a rotation driving module, a linear driving module, and a control module. It is provided on at least one surface, the second conductive member is provided on at least one surface of the receiving portion, the rotary drive module includes a rotary part through which the tube is coupled and a motor for rotating the rotary part in the circumferential direction of the tube; The connector may be fitted into the receiving part to electrically connect the first conductive member and the second conductive member.

The catheter pullback connection joint system according to the present invention may be characterized in that the first conductive member is plated on the connector outer surface, and the second conductive member is plated on the inner surface of the receiving portion.

According to the present invention has the following effects.

The electrical connection between the pullback device and the catheter eliminates the need for a separate cable, making the structure compact and reliable, facilitating manufacturing and reducing manufacturing costs.

1 is an exploded view of a catheter pullback connection joint system according to the present invention.
Figure 2 is a schematic diagram showing the connection of each configuration of the catheter pullback connection joint system according to the present invention.

Preferred embodiments of the present invention will be described in more detail, but the already well-known technical parts will be omitted or compressed for brevity of description.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

The catheter pullback connection joint system according to the present invention includes a catheter 100, a connector 200 and an adapter 300.

The catheter 100 includes a tube 120 provided with an electrical signal line 121 and outputs or receives an electrical signal for a sound wave signal. The catheter 100 may include a body insertion means and an image scanning means, but the catheter 100 of the catheter pullback connection joint system according to an embodiment of the present invention will be described with reference to the image scanning means.

Catheter 100 may include a head (not shown) and a tube 120. In addition, the tube 120 may be provided in the form of a cable extending from the head to the other end and including an optical signal line (not shown) and an electrical signal line 121.

The tube 120 of the catheter 100 may be provided with at least one tube hole 122 outside the distal end. The electrical signal line 121 is pulled out through the tube hole 122 and separated into two parts, and then electrically connected to the first conductive member 210 of the connector 200. Through this, the connector 200 and the catheter 100 are electrically connected.

In this case, light and sound wave signals in the blood vessel may be output or received through the head. Here, the light transmitting unit and the sound wave transmitting unit may be located inside the head.

The sound wave transmission unit may be connected to one end of the electric signal line 121 adjacent to one end of the head (not shown) to perform mutual conversion of the electric signal and the sound wave signal, and may output or receive the sound wave signal in the blood vessel.

In this case, the sound wave transmitting unit may be provided as an ultrasonic transducer in which a variable signal conversion is performed using the piezoelectric effect.

The connector 200 includes a first conductive member 210 and a connector housing 220. The connector 200 is penetrated and coupled by the tube 120, and includes a first conductive member 210 so as to exchange electrical signals for sound wave signals, and the electrical signal lines are electrically connected to the first conductive member 210. Is connected. The connector 200 is accommodated in the connector housing 220, and the connector housing 220 is provided to be coupled to fit snugly with the accommodating part 310 of the adapter 300 to be described later. In addition, the connector housing 220 protects the connector 200 and is provided so that the first conductive member 210 is exposed to the outside so as not to disturb the electrical connection with the adapter 300.

That is, the connector 200 structurally and electrically connects the catheter 100 and the adapter 300.

The pullback device may be coupled to the tube 120 to guide the rotation and movement of the catheter 100 and provide a connection terminal connected to the electrical signal line 121 in the tube 120.

The pullback device includes a rotary drive module, a linear drive module, and a control module.

Here, the rotation drive module is configured to include a first motor and the rotating unit.

In this case, the first motor is rotated for the rotation drive, the tube 120 including the optical signal line and the electrical signal line 121 is coupled through, and can rotate in the circumferential direction of the tube 120 by the operation of the first motor. have.

Adapter 300 is installed in the pullback device is provided with a receiving portion 310 for receiving the connector. The adapter 300 provides the power supplied from the pullback device to the catheter 100, or provides an electrical signal received from the catheter 100 to the pullback device. Structurally, the catheter 100 and the connector 200 serve to couple the pullback device.

The accommodating part 310 may include a second conductive member 311, and the connector housing 210 in which the connector 200 is accommodated may be fitted into the accommodating part 310 to be connected to the first conductive member 210 and the second conductive member. It is characterized in that the member 311 is electrically connected.

That is, the sound wave signal received by the sound wave transmission unit of the catheter 100 is converted into an electrical signal and transmitted along the electric signal line, and as the electrical signal line is electrically contacted with the first conductive member 210 of the connector 200, the connector An electrical signal is transmitted to 200. In addition, according to the electrical connection between the first conductive member 210 and the second conductive member 311 of the connector 200, the electrical signal may be connected to the adapter 300 and finally transferred to the pullback device and the image output device. . It is apparent that the above-described steps may be reversed so that an electrical signal may be transmitted to a pullback device and an image device (not shown).

The above-described electrical signal transfer process may be performed by the catheter pullback connection joint system according to the present invention.

In the catheter pullback connection joint system according to the present invention, the first conductive member 210 and the second conductive member 311 may be provided in various ways. For example, a thin conductive coating may be provided on the connector 200 and the adapter 300, respectively, and may be provided in the form of a thin conductive metal plate. In addition, the first conductive member 210 may be plated on the outer surface of the connector 200, and the second conductive member 311 may be plated on the inner surface of the receiving portion 310. This eliminates the need for a separate cable and wires necessary for electrically connecting the connector 200 and the adapter 300, thereby ensuring sufficient space within a narrow structure, thereby making the manufacturing process easier.

However, each type of the conductive member may be freely selectable while the connector 200 and the adapter 300 can be electrically connected while the connector 200 and the adapter 300 can be electrically connected in a narrow structure connecting the catheter 200 and the pullback device. Do.

In general, each component of the catheter 100, the connector 200, the adapter 300, etc. are standardized, so it may not be easy to change the shape of each component. Therefore, when each component is densely structured compared to a general catheter system such as a catheter system in which a fusion image is acquired through ultrasonic and optical signals, it is necessary to present a compact structure that minimizes the structure for structural coupling and electrical contact. There was.

According to the catheter pullback connection joint system according to the present invention, it is possible to provide a sufficient space secured in the portion connecting the pullback device and the catheter 100, it is possible to present a more compact structure, and also to operate the system stably It is possible to manufacture and the manufacturing cost is reduced because the manufacturing becomes easy.

While the above has been shown and described with respect to preferred embodiments and applications of the present invention, the present invention is not limited to the specific embodiments and applications described above, the invention without departing from the gist of the invention claimed in the claims Modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention, and the scope of the present invention will be described below. It should be understood that the scope and equivalents thereof.

100: catheter
120: tube
121: electric signal line
122: tube hole
200: connector
210: first conductive member
220: connector housing
300: adapter
310: accommodation space
311: second conductive member

Claims (2)

A catheter including a tube provided with an electrical signal line and an optical signal line, and outputting or receiving an electrical signal and an optical signal for a sound wave signal;
A connector coupled through the tube, the connector including a first conductive member to exchange electrical signals with respect to a sound wave signal, wherein the electrical signal line is electrically connected to the first conductive member;
A pullback device through which the tube is coupled to guide rotation and movement of the catheter; And
And an adapter installed in the pullback device and having an accommodation portion for accommodating the connector.
The pullback device,
A rotary drive module, a linear drive module, and a control module,
The first conductive member is provided on at least one surface of the connector,
The second conductive member is provided on at least one surface of the receiving portion,
The rotary drive module includes a rotary unit through which the tube is coupled through and a motor for rotating the rotary unit in the circumferential direction of the tube,
The connector is fitted to the receiving portion, characterized in that the first conductive member and the second conductive member is electrically connected.
Catheter pullback connection joint system.
The method of claim 1,
The first conductive member is
Plated on the outer surface of the connector,
The second conductive member is
It is characterized in that the plated on the inner surface of the receiving portion
Catheter pullback connection joint system.

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