KR102638356B1 - Catheter apparatus capable of signal control according to the characteristics of drugs - Google Patents

Abstract

One embodiment of the present invention is a catheter device that is inserted into the human body and simultaneously performs pharmacological treatment and electrical treatment on the target area in the body. One side is inserted into the body, is made in the shape of a tube, and is directed to the target area in the body through the conduit. Catheters delivering conductive drugs; An electrical stimulation unit that applies an electrical signal to the drug in the duct so that electrical stimulation is applied to the target area of the body using the drug as a medium; It provides a catheter device capable of signal control according to the characteristics of the drug, including a measuring unit that measures the electrical characteristics of the drug and a control unit that adjusts the level of the electrical signal applied by the electrical stimulation unit based on the electrical properties.

Description

Catheter device capable of signal control according to the characteristics of the drug {CATHETER APPARATUS CAPABLE OF SIGNAL CONTROL ACCORDING TO THE CHARACTERISTICS OF DRUGS}

The present invention relates to a catheter device capable of controlling signals according to the characteristics of the drug. More specifically, the present invention relates to a catheter device capable of applying different electrical signals depending on the electrical properties of the drug when performing both drug treatment and electrical treatment simultaneously. It relates to a catheter device capable of signal control according to .

When there is back pain or lower extremity pain that does not respond to conservative treatment in cases of lumbar degenerative nerve stenosis, disc protrusion and herniation, and spondylolisthesis, adhesiolysis of the stenosis area using a navigation epidural catheter through the coccyx and anti-iflammatory agents, hyaluronidase, etc. Perform (epidural neuroplasty). Figure 1 shows an example in which a catheter (10) is inserted into the body along a guide wire (W) for epidural neuroplasty.

For causes and indications similar to the above, symptoms can be improved by placing a needle with an active tip about 1 cm long in the dorsal root ganglions and then performing radiofrequency ablation to form a nerve lesion at the lesion site.

These epidural neuroplasty and radiofrequency ablation can improve back pain and lower back pain caused by the above causes through different mechanisms.

Meanwhile, epidural neuroplasty using a navigation epidural catheter and radiofrequency ablation on the dorsal root ganglion cannot be performed simultaneously because the skin puncture site is different even though the indications and patient groups are almost the same, or even if both procedures are performed simultaneously, the coccyx and each other Because skin puncture of the dorsal root ganglion is required, it takes a long time and may cause discomfort to the patient.

Therefore, there is a need to develop a catheter device that can perform radiofrequency ablation while performing epidural neuroplasty.

Korean Patent Publication No. 10-2015-0018801 (published on February 24, 2015)

The technical problem to be achieved by the present invention is to provide a catheter device that can apply different electrical signals depending on the electrical characteristics of the drug when performing drug treatment and electrical treatment simultaneously.

The technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

In order to achieve the above technical problem, one embodiment of the present invention is a catheter device that is inserted into the human body and simultaneously performs pharmacological treatment and electrical treatment on the target area of the body. One side is inserted into the body and has the shape of a tube. A catheter that delivers a conductive drug to the target area in the body through a duct; An electrical stimulation unit that applies an electrical signal to the drug in the duct so that electrical stimulation is applied to the target area of the body using the drug as a medium; It provides a catheter device capable of signal control according to the characteristics of the drug, including a measuring unit that measures the electrical characteristics of the drug and a control unit that adjusts the level of the electrical signal applied by the electrical stimulation unit based on the electrical properties.

A conductive stimulation transmitting unit is provided on one side of the catheter inserted into the body, and the stimulation transmitting unit can receive the electrical signal transmitted through the drug and spread the electrical stimulation around the target area.

The electrical stimulation unit is connected to the stimulation transmitting unit through a conductor provided in the side wall of the catheter, and the electrical stimulation unit may apply the electrical signal to the stimulation transmitting unit.

It is detachably accommodated within the conduit of the catheter, and may further include a guide wire that is inserted into the body prior to the catheter and guides the direction of movement of the catheter to reach the target site.

It may further include a drug receiving portion that accommodates the drug and is connected to the other side of the catheter.

The drug receiving portion may be made of an insulating material.

The measuring unit may measure the electrical properties of the drug accommodated in the drug receiving unit.

A measuring electrode is provided at a position adjacent to the one end of the catheter, the measuring unit is connected to the measuring electrode through a conductor provided in the side wall of the catheter, and the measuring unit electrically detects the drug in contact with the measuring electrode. Characteristics can be measured.

It further includes a drug-sensing electrode provided at a position adjacent to the one end of the catheter, wherein the control unit is connected to the drug-sensing electrode, and when the drug is detected by the drug-sensing electrode, the electrical stimulation unit applies the electrical signal. You can control it.

It is provided at a position adjacent to the one end of the catheter and further includes an application electrode connected to the electrical stimulation unit, and the electrical stimulation unit can apply the electrical signal to the application electrode.

It may further include a drug sensing electrode provided at a position adjacent to the one end of the catheter, and the drug sensing electrode may be provided at a position farther from the one end of the catheter compared to the applying electrode.

According to an embodiment of the present invention, when a drug is injected into a target area of the body using a catheter, electrical stimulation is provided to the target area of the body using the drug as a medium, so that pharmacological treatment and electrical treatment of the target area of the body can be performed at once. It can be done during surgery.

That is, according to an embodiment of the present invention, radiofrequency ablation can be performed while performing epidural neuroplasty, thereby maximizing the treatment effect, reducing patient discomfort, and saving procedure time and medical costs.

Additionally, according to an embodiment of the present invention, the level of the electrical signal applied to the drug by the electrical stimulation unit is adjusted based on the electrical characteristics of the drug, so that the exact level of electrical stimulation required for treatment can be applied to the target area in the body.

In addition, according to an embodiment of the present invention, a measuring unit is provided to measure the electrical properties of the drug, and the electrical signal applied by the electrical stimulation unit is automatically adjusted based on the measured electrical properties, so that the exact level required for treatment is reached regardless of the type of drug. Electrical stimulation can be applied to target areas in the body.

In addition, according to an embodiment of the present invention, since a stimulation transmitting unit is provided at one end of the catheter inserted into the body, the electrical signal transmitted through the drug can be effectively transmitted to the target area in the body.

Additionally, according to an embodiment of the present invention, a measuring electrode is provided at one end of the catheter inserted into the body, so the electrical properties of the drug can be measured more accurately.

In addition, according to an embodiment of the present invention, an applying electrode connected to a stimulation transmitting unit is provided at one end of a catheter inserted into the body, so that an electrical signal transmitted through a drug can be transmitted to the target area in the body without loss.

In addition, according to an embodiment of the present invention, since a drug sensing electrode is provided at one end of the catheter inserted into the body, an electrical signal is applied only when the drug is administered without a separate control process, thereby increasing the power efficiency of the catheter device. there is.

Additionally, according to an embodiment of the present invention, the drug-sensing electrode may be provided at a position farther from one end of the catheter than the application electrode, so drug detection and application of an electrical signal can be performed sequentially without a separate control algorithm. .

The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

Figure 1 shows an example in which a catheter is inserted into the body along a guide wire for epidural neuroplasty.
Figure 2 is a diagram showing a catheter device according to an embodiment of the present invention.
Figure 3 is a diagram showing a catheter device according to another embodiment of the present invention.
Figure 4 is an enlarged view of one end of a catheter according to an embodiment of the present invention.
Figure 5 is a diagram showing a catheter device according to another embodiment of the present invention.
Figure 6 is a diagram showing a catheter device according to another embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the attached drawings. However, the present invention may be implemented in various different forms and, therefore, is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are given similar reference numerals throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, combined)" with another part, this means not only "directly connected" but also "indirectly connected" with another member in between. "Includes cases where it is. Additionally, when a part is said to “include” a certain component, this does not mean that other components are excluded, but that other components can be added, unless specifically stated to the contrary.

The terms used herein are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to indicate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

Figure 2 is a diagram showing a catheter 100 device according to an embodiment of the present invention.

As shown in FIG. 2, the catheter 100 device may include a catheter 100, a drug receiving unit 200, an electrical stimulation unit 300, a measuring unit 400, and a control unit 500.

The catheter 100 can deliver the drug (M) into the patient's body. As an example, the catheter 100 may be shaped like a tube.

Additionally, the catheter 100 may include a side wall 110, and a conduit P surrounded by the side wall 110 may be formed therein. As an example, the drug (M) may be delivered into the patient's body through the duct (P) inside the catheter (100).

One side of the catheter 100 may be inserted into the patient's body. Additionally, the catheter 100 may be made of a flexible material so that it can be bent to reach the treatment target area in the body.

Meanwhile, separate work may be performed to accurately insert the catheter 100 into the treatment target area.

As an example, a needle may be used for skin puncture. Then, the catheter 100 may be inserted into the punctured area of the skin. Additionally, a synthetic resin member may be used to secure the insertion path for the punctured area.

Additionally, a guide wire (not shown) may be provided. The guide wire may be detachably accommodated in the conduit (P) inside the catheter 100.

As an example, the guide wire may be inserted into the target area of the patient's body prior to insertion of the catheter 100. Then, the catheter 100 can be inserted along the guide wire to reach the target area in the patient's body. That is, the guide wire can guide the moving direction or moving path of the catheter 100.

The drug receiving portion 200 may be connected to the other side of the catheter 100 and may accommodate the drug (M). As an example, the drug receiving portion 200 may be connected to the other side of the catheter 100 with a filter (not shown) in between.

Additionally, the drug receiving unit 200 can inject the drug M contained therein into the catheter 100. As an example, the drug receiving unit 200 can inject the drug (M) into the catheter 100 based on the principle of a syringe. Such injection may be accomplished through known means.

Additionally, the drug receiving portion 200 may be made of an insulating material. This is to prevent the electrical signal from flowing outward through the drug receptor 200 when the electrical stimulation unit 300, which will be described later, applies an electrical signal to the drug (M).

Meanwhile, the electrical stimulation unit 300 may apply an electrical signal to the drug (M). As an example, the electrical signal may be an alternating current signal.

As an example, the electrical stimulation unit 300 may apply an electrical signal to the drug (M) contained in the drug receiving unit 200. At this time, the drug (M) may be a conductive drug (M). And, the applied electrical signal can be transmitted through the drug (M).

As an example, the drug (M) contained in the drug receiving portion 200 may be injected into the catheter 100 and reach one end of the catheter 100. At this time, the electrical signal applied to the drug (M) may reach the end of one side of the catheter (100) using the drug (M) as a medium.

At this time, since one end of the catheter 100 has reached the target area in the body, the electrical signal transmitted through the drug M can also be applied to the target area in the body. At this time, the patient's body (B) can serve as grounding. In other words, electrical stimulation due to electrical signals can be applied to target areas in the body.

According to this, electrical stimulation can be applied at the same time as the therapeutic drug (M) is injected into the target area of the body. In other words, epidural neuroplasty and radiofrequency ablation can be performed simultaneously.

Meanwhile, of course, the electrical stimulation unit 300 may apply an electrical signal to the drug (M) injected into the conduit (P) within the catheter (100).

And, the measuring unit 400 can measure the electrical characteristics of the drug (M). As an example, the measuring unit 400 may measure the electrical characteristics of the drug (M) contained in the drug receiving unit 200. As an example, the electrical characteristic may be impedance.

In addition, the control unit 500 may adjust the level of the electrical signal applied by the electrical stimulation unit 300 to the drug M based on the electrical characteristics of the drug M measured by the measuring unit 400.

As an example, when the impedance of the drug (M) is higher than the reference value, the control unit 500 may control the electrical stimulation unit 300 to apply an electrical signal of a higher voltage to the drug (M).

As another example, when the impedance of the drug (M) is lower than the reference value, the control unit 500 may control the electrical stimulation unit 300 to apply an electrical signal of a lower voltage to the drug (M).

Figure 3 is a diagram showing a catheter 100 device according to another embodiment of the present invention.

As shown in FIG. 3, the catheter device 100 may include a user interface 1000 and a memory 1100.

In the embodiment of FIG. 2, the control unit 500 acquires the electrical properties of the drug solution contained in the drug receiving unit 200 through the measurement unit 400, while in the embodiment of FIG. 3, the control unit 500 acquires the electrical properties of the drug solution. There is a difference in that it is obtained through the user interface 1000 and the memory 1100.

The user interface 1000 may receive identification information about the drug (M) from the user of the catheter device (100). To this end, the user interface 1000 may be provided with an input means such as a touch screen or button unit.

Additionally, the memory 1100 may store data on electrical characteristics and identification information of a plurality of drugs (M).

Additionally, the control unit 500 may load electrical characteristic data matching the identification information input by the user from the memory 1100. In addition, the control unit 500 may adjust the level of the electrical signal applied by the electrical stimulation unit 300 to the drug (M) based on the loaded electrical characteristic data.

Figure 4 is an enlarged view of one end of the catheter 100 according to an embodiment of the present invention.

As shown in FIG. 4, the catheter 100 may be provided with a stimulation transmitting unit 150 at one end.

The stimulus transmitting unit 150 may be made of a conductive material. Additionally, the stimulation transmitting unit 150 may receive an electrical signal transmitted through the chemical solution. Additionally, the stimulation transmitting unit 150 can transmit the received electrical signal to an adjacent body part.

As an example, one end of the catheter 100 can reach the target area in the patient's body according to the method described in FIG. 2. At this time, the stimulus diffusion unit may be in contact with the target area in the body and its surrounding area.

As an example, the drug M may be in contact with the stimulus transmitting unit 150 in the process of being discharged through the opening at one end of the catheter 100. Since the contact between the drug M and the stimulation delivery unit 150 is essential, electrical stimulation can be applied more effectively to the target area in the body.

Additionally, the stimulation transmitting unit 150 can expand the area where electrical stimulation is applied to the target area in the body and its surroundings. In other words, as the area to which electrical stimulation is applied expands, surgery can become easier.

Additionally, the stimulus transmitting unit 150 may be made of a magnetic material. According to this, there is an advantage that remote navigation (Ex. Remote Magnetic Navigation) of one end of the catheter 100 equipped with the stimulation transmitting unit 150 can be performed.

Meanwhile, the stimulation transmitting unit 150 may be directly connected to the electrical stimulation unit 300 through a conductor provided in the side wall 110 of the catheter 100. In this case, the electrical signal applied by the electrical stimulation unit 300 may be applied to the stimulation transmitting unit 150 through a conductor.

Figure 5 is a diagram showing a catheter 100 device according to another embodiment of the present invention.

As shown in FIG. 5, the measurement electrode 120 may be provided at a location adjacent to one end of the catheter 100. The measuring electrode 120 may be provided inside the catheter 100 so as to be in contact with the drug (M) moving through the conduit (P).

Additionally, the measuring electrode may be connected to the measuring unit 400 through a conductor provided inside the side wall 110 of the catheter 100. The conductor 121 provided inside the side wall 110 of the catheter 100 may extend along the side wall 110 of the catheter 100 to a position adjacent to the other side of the catheter 100.

And the measuring unit 400 can measure the difference between the electrical characteristics of the drug (M) located within the drug receiving unit 200 and the electrical properties of the drug (M) located adjacent to the measuring electrode 120. At this time, the drug M may be injected to a position adjacent to the measurement electrode 120 within the catheter 100. And, the electrical stimulation unit 300 may be in a state in which an electrical signal is applied to the drug (M).

Additionally, the control unit 500 may adjust the level of the electrical signal applied by the electrical stimulation unit 300 to the drug (M) based on the difference in measured electrical characteristics.

This is because the electrical signal applied to the target area in the body may be attenuated due to the impedance of the drug (M) or the length of the catheter (100).

That is, as the measuring electrode 120 is provided at one end of the catheter 100, electrical stimulation at the exact level required for treatment can be applied to the target area.

Figure 6 is a diagram showing a catheter 100 device according to another embodiment of the present invention.

As shown in FIG. 6, the applying electrode 130 and the drug sensing electrode 140 may be provided at a location adjacent to one end of the catheter 100.

The applied electrode 130 may be connected to the electrical stimulation unit 300 through a conductor provided inside the side wall 110 of the catheter 100. The conductor 131 provided inside the side wall 110 of the catheter 100 may extend along the side wall 110 of the catheter 100 to a position adjacent to the other side of the catheter 100.

And, the electrical stimulation unit 300 may apply an electrical signal to the applying electrode 130.

According to this, the electrical signal is applied to a location closer to the target area in the body compared to the case where the electrical signal is applied to the drug receptor 200. In other words, electrical stimulation at the exact level required for treatment can be applied to the target area.

Additionally, the drug sensing electrode 140 may be connected to the electrical stimulation unit 300 through a conductor provided inside the side wall 110 of the catheter 100. The conductor 141 provided inside the side wall 110 of the catheter 100 may extend along the side wall 110 of the catheter 100 to a position adjacent to the other side of the catheter 100.

In addition, the control unit 500 may detect that the drug M has been injected to a location adjacent to one end of the catheter 100 through the drug sensing electrode 140.

And, the control unit 500 may control the electrical stimulation unit 300 to apply an electrical signal to the applying electrode 130.

According to this, the electrical stimulation unit 300 can apply an electrical signal when the drug (M) is injected to a position adjacent to one end of the catheter 100, so the power efficiency of the catheter 100 device can be increased.

Additionally, the drug sensing electrode 140 may be provided at a position farther from one end of the catheter 100 than the applying electrode 130.

According to this, detection of the drug (M) and application of an electrical signal can be performed sequentially without a separate control algorithm.

Meanwhile, when the drug (M) is detected by the drug sensing electrode 140, the electrical stimulation unit 300 may, of course, apply an electrical signal to the drug (M) in the drug receiving unit 200.

The description of the present invention described above is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical idea or essential features of the present invention. will be. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. For example, each component described as single may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the patent claims described below, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention.

100: Catheter 200: Drug receiving portion
110: side wall 120: measuring electrode
130: applying electrode 140: drug sensing electrode
150: stimulation transmitting unit 300: electrical stimulation unit
400: measurement unit 500: control unit
1000: User Interface 1100: Memory

Claims (11)

It is a catheter device that is inserted into the human body and simultaneously performs pharmacological and electrical treatment on target areas in the body.
A catheter that is inserted into the body on one side and is shaped like a tube to deliver a conductive drug to a target area in the body through the tube;
An electrical stimulation unit that applies an electrical signal to the drug in the duct so that electrical stimulation is applied to the target area of the body using the drug as a medium;
A measuring unit that measures the electrical properties of the drug and
A catheter device capable of signal control according to the characteristics of the drug, including a control unit that adjusts the level of the electrical signal applied by the electrical stimulation unit based on the electrical characteristics.
According to paragraph 1,
A conductive stimulus transmitting unit is provided on one side of the catheter inserted into the body,
A catheter device capable of signal control according to the characteristics of the drug, wherein the stimulation transmitting unit receives the electrical signal transmitted through the drug and spreads the electrical stimulation around the target area.
According to paragraph 2,
The electrical stimulation unit is connected to the stimulation transmission unit through a conductor provided in the side wall of the catheter,
A catheter device capable of signal control according to the characteristics of the drug, wherein the electrical stimulation unit applies the electrical signal to the stimulation delivery unit.
According to paragraph 1,
Signal control according to the characteristics of the drug, which is detachably received within the conduit of the catheter and further includes a guide wire that is inserted into the body prior to the catheter and guides the direction of movement of the catheter to reach the target site. Catheter device available.
According to paragraph 1,
A catheter device capable of signal control according to the characteristics of the drug, further comprising a drug receiving portion that accommodates the drug and is connected to the other side of the catheter.
According to clause 5,
A catheter device capable of controlling signals according to the characteristics of the drug, wherein the drug receiving portion is made of an insulating material.
According to clause 5,
The measuring unit is a catheter device capable of controlling signals according to the characteristics of the drug, wherein the measuring unit measures the electrical properties of the drug accommodated in the drug receiving portion.
According to clause 5,
A measuring electrode is provided at a position adjacent to the one end of the catheter,
The measuring unit is connected to the measuring electrode through a conductor provided in the side wall of the catheter,
The measuring unit is a catheter device capable of controlling signals according to the characteristics of the drug, wherein the measuring unit measures the electrical properties of the drug in contact with the measuring electrode.
According to paragraph 1,
Further comprising a drug sensing electrode provided at a position adjacent to the one end of the catheter,
The control unit is connected to the drug sensing electrode, and controls the electrical stimulation unit to apply the electrical signal when the drug is detected by the drug sensing electrode. A catheter device capable of signal control according to the characteristics of the drug.
According to paragraph 1,
It is provided at a position adjacent to the one end of the catheter and further includes an applied electrode connected to the electrical stimulation unit,
A catheter device capable of signal control according to the characteristics of the drug, wherein the electrical stimulation unit applies the electrical signal to the application electrode.
According to clause 10,
Further comprising a drug sensing electrode provided at a position adjacent to the one end of the catheter,
The drug sensing electrode is a catheter device capable of signal control according to the characteristics of the drug, wherein the drug sensing electrode is provided at a position farther from the one end of the catheter compared to the applying electrode.

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