# US 2013/0158427 A1 · Catheter set comprising guide wire

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- Number: US 2013/0158427 A1
- Document ID: US20130158427A1
- Status: Published application
- Kind: A1
- Application number: 13/817,902
- Filed: 2010-09-10
- Published: 2013-06-20
- Earliest claimed: 2010-09-10
- Assignees: Sewoon Medical Co., Ltd.; Sang-sik CHOI
- Inventors: Sang-sik Choi
- Web page: https://patentgrep.com/patent/US20130158427A1

## CPC

- A61M 25/0043: {characterised by structural features}
- A61B 5/05: Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves (measuring movement of the entire body or parts thereof A61B5/11; detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof A61B5/24)
- A61B 5/4893: {Nerves}
- A61B 5/6852: {Catheters}
- A61B 17/3401: {Puncturing needles for the peridural or subarachnoid space or the plexus, e.g. for anaesthesia}
- A61B 17/3415: {for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters (A61B17/3417 takes precedence; body piercing catheter guide needles A61M25/06)}
- A61M 25/09: Guide wires
- A61N 1/0551: {Spinal or peripheral nerve electrodes}
- A61M 2025/0007: {Epidural catheters}
- A61M 2025/0008: {having visible markings on its surface, i.e. visible to the naked eye, for any purpose, e.g. insertion depth markers, rotational markers or identification of type}
- A61M 2025/09166: {having radio-opaque features}
- A61M 2205/0233: Conductive materials, e.g. antistatic coatings for spark prevention
- A61M 2205/0238: the material being a coating or protective layer
- A61N 1/36017: {with leads or electrodes penetrating the skin}
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B)

## Abstract

The present invention relates to a catheter set for nerve treatment used for delivering a stimulus or a drug to nerves in the human body. According to the present invention, the catheter set for nerve treatment includes: a catheter capable of delivering a drug to a target nerve through a tube line, having a tube shape; a cylindrical cannula for supporting the catheter when inserted into the body tissue while slidably accommodating the catheter inside; a conductive guide wire to be accommodated inside the catheter, having one exposed end; and a conductive first stimulator connector for delivering an electric stimulus to the one exposed end of the guide wire, electrically connected to the other end of the guide wire. Therefore, it is possible to accurately place the end of the catheter at the location of the target nerve, to prevent the end of the catheter from deviating from the target nerve during an operation, and to finely adjust the location of the catheter even after removing the cannula.

## Claims

### Claim 1

A catheter set for nerve treatment, which is used to deliver a stimulus or a drug to a nerve of the human body, comprising:
a catheter capable of delivering a drug to a target nerve through a tube line, having a tube shape;
a cylindrical cannula for supporting the catheter when inserted into the body tissue while slidably accommodating the catheter inside;
a conductive guide wire to be accommodated inside the catheter, having one exposed end; and
a conductive first stimulator connector for delivering an electric stimulus to the one exposed end of the guide wire, electrically connected to the other end of the guide wire.

### Claim 2 (depends on 1)

The catheter set of claim 1, wherein, on the guide wire, a standard graduation corresponding to a length obtained by adding a length of an exposed end of the guide wire to the whole length of the catheter is marked.

### Claim 3 (depends on 2)

The catheter set of claim 2, wherein reference graduations are marked around the standard graduation on the guide wire to identify a sliding distance of the guide wire inside the catheter.

### Claim 4 (depends on 1)

The catheter set of claim 1, wherein the one end of the guide wire is formed to be bent in one direction so that a location of one end of the catheter is adjusted when the catheter is inserted inside the body tissue.

### Claim 5 (depends on 1)

The catheter set of claim 1, wherein the guide wire is made of a metallic material to identify a figure of the guide wire inserted inside the body tissue through radiation irradiation.

### Claim 6 (depends on 1)

The catheter set of claim 1, wherein one end of the cannula has conductivity,
an outer circumference of the cannula except for the one end is coated with an electrical insulation material, and
the catheter set further comprises a conductive second stimulator connector for delivering an electric stimulus to the one end of the cannula, electrically connected to the other end of the cannula.