KR101806829B1 - Catheter - Google Patents

Abstract

The present invention relates to a catheter improved in structure to be suitable for neuroplasty. A catheter according to the present invention comprises a guide wire formed to be elongated in one direction and made of a flexible material and inserted into a patient's body, a guide wire inserted into the guide wire, A driving wire to which one end of the driving wire is coupled to one end of the guide wire, a main body to which the other end of the guide wire is coupled, A distal end portion of which is slidably inserted into a guide wire and is inserted into the guide wire, and a distal end portion of the distal end portion is inserted into the guide wire, The molding oil being moved between the use positions exposed to the outside of the mold It also includes the nets.

Description

Catheter {Catheter}

The present invention relates to a catheter, and more particularly to a catheter suitable for neuroplasty such as a lumbar disc therapy.

A catheter is a tube that inserts a wide meaning into the body for treatment. Such a catheter may include a catheter such as an endoscope having a photographing means such as a camera for observing the inside of the catheter, a catheter having a drug supply tube for supplying the drug to the internal organs, A catheter for irradiating a laser to remove a tumor, and a rotatable catheter whose tip is bent for treatment of a waist disk.

In a technique related to such a catheter, a tube and a shaft (guide wire) for supplying a drug are rotated on the 4th and 5th pages of FIGS. 2A and 2B of "Steerable catheter" (US Patent No. 6,146,355, And a driving device for rotating the shaft by pulling the wire is disclosed.

In Fig. 1, the catheter of Patent Document 1 is shown. Such a technique can be realized by a physician who performs a procedure by cutting the tail bone side of a patient as shown in Fig. 1 and manipulating with a driving device through the shaft, inserts the shaft of the catheter 1 into the patient's spine, Or the distal end of the shaft (guide wire) is rotated to the left and right to apply a stimulus to the disk to perform treatment.

Korean Patent No. 10-1195997 discloses a catheter equipped with a camera.

Recently, a catheter is inserted into a vertebra and a nerve is formed (a part of a nerve tissue is scraped) (i.e., neuroplasty) is performed. However, a suitable catheter has not been developed yet, . Therefore, development of a catheter suitable for neuroplasty is required.

Patent Document 1: U.S. Patent No. 6,146,355 Patent Document 2: Korean Patent No. 10-1195997

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a catheter improved in structure to be suitable for neuroplasty.

A catheter according to the present invention includes a guide wire formed to be elongated in one direction and made of a flexible material and inserted into a body of a patient and a guide wire formed to be elongated in the longitudinal direction of the guide wire, A driving wire having one end connected to one end of the guide wire, a main body coupled to the other end of the guide wire, and a control unit installed in the main body, the other end of the driving wire being coupled, And a driving device for rotating one end of the guide wire by pulling or pulling the wire for pulling or pulling the wire, wherein the catheter is slidably inserted into the guide wire, And the distal end is inserted into the guide And a molding unit which is moved between use positions exposed to the outside of the wire.

According to the present invention, the forming unit includes a first moving wire that is formed long in one direction and is inserted into the guide wire so as to be slidable along the length direction of the guide wire, and a second moving wire that is elongated in one direction, And one end of the second moving wire is coupled to an end of the first moving wire and the other end of the second moving wire is coupled to an end of the second moving wire, And a molding wire which is moved between the unused positions.

According to the present invention, it is preferable that the guide wire is formed with a first insertion passage into which the first moving wire is inserted and a second insertion passage into which the second moving wire is inserted.

According to another aspect of the present invention, there is provided a molding unit comprising: a moving wire which is formed to be elongated in one direction and inserted into the guide wire so as to be slidable along a longitudinal direction of the guide wire; And a molding wire interlocked with the sliding of the moving wire to move between the unused position and the use position.

According to the present invention, it is preferable that the forming wire is folded when inserted into the guide wire, and has elasticity so that it can be unfolded when exposed to the outside of the guide wire.

Further, according to the present invention, in the guide wire, the end portion that contacts the forming wire when the forming wire is moved between the use position and the unused position is preferably made of a wear-resistant material.

According to the present invention, when the catheter is inserted into the body, when the nerve molding is not performed, the forming wire is positioned inside the catheter, and the forming wire is exposed to the outside of the catheter only when the neural forming is performed, To form a nerve tissue.

1 is a schematic view of a conventional catheter.
2 is a schematic perspective view of a catheter according to one embodiment of the present invention.
3 is a schematic cross-sectional view for explaining the principle of driving the guide wire.
4 is an enlarged perspective view of an end portion of a guide wire according to an embodiment of the present invention.
5 is a cross-sectional view illustrating a process of moving a molding unit in a catheter according to an embodiment of the present invention.
6 is a perspective view of the guide wire end portion when the molding unit is in the use position.
7 is a cross-sectional view illustrating a process of moving a molding unit in a catheter according to another embodiment of the present invention.

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

FIG. 2 is a schematic perspective view of a catheter according to an embodiment of the present invention, FIG. 3 is a schematic cross-sectional view illustrating a principle of driving a guide wire, FIG. 4 is a cross- FIG. 5 is a cross-sectional view illustrating a process of moving a molding unit in a catheter according to an embodiment of the present invention, FIG. 6 is a perspective view of a guide wire end portion when the molding unit is in the use position, to be.

First, as mentioned in the Background Art, the catheter is inserted into the human body to photograph the inside of the human body, supply medicines to the human body, remove the tumor by irradiating the human body with a rare gas, or treat the back disk And is widely used for forming (scraping) a part of the nerve.

2 to 6, the catheter 100 according to the present embodiment includes a guide wire 10, a catheter 100 according to the present invention, A driving wire 20, a main body 30, a driving device 40, and a molding unit 50. [

The guide wire 10 is inserted into a human body and is formed into a wire shape elongated in one direction and inserted into the body. At this time, since the guide wire is inserted into the body, it is made of a material harmless to the human body and is made of a flexible material so that it can be bent in the body. A plurality of insertion passages are formed through the guide wire 10 along the longitudinal direction thereof. This insertion path can be utilized as a path through which a drug is injected depending on the purpose of the catheter, and a path through which an optical cable or the like is moved during imaging can also be utilized.

A plurality of insertion passages are also formed in the guide wire 10 according to the present embodiment. First, in this embodiment, as shown in FIG. 2, a pair of driving wire insertion passages 12 into which the driving wire 20 is inserted is formed in the guide wire 10. The driving wire 20 is inserted into the driving wire insertion passage 12 as described later. 4 and 5, the first insertion passage 13 and the second insertion passage 14 are formed through the guide wire 10 in the longitudinal direction of the guide wire 10, The first moving wire 51 and the second moving wire 52 are inserted into the first insertion passage 13 and the second insertion passage 14. Although not shown in the drawings according to the present embodiment, a passage or the like for drug injection may be additionally formed.

On the other hand, in the case of this embodiment, as described later, the forming unit 50 is moved between the use position and the unused position, and accordingly, the friction between the forming unit and the guide wire upon movement of the forming unit 50 causes the guide wire to be worn . Therefore, it is preferable that the end portion of the guide wire, which is in contact with the forming unit, that is, one end portion 11 of the guide wire as shown in Fig. 5, is made of a material having wear resistance.

The driving wire 20 is for moving (rotating) the guide wire. In this embodiment, two driving wires 20 are provided as shown in FIG. 3, Are inserted into the pair of driving wire insertion passages 12 one by one. At this time, the end portions (21) of the driving wires are fixedly coupled to the guide wire (10). A hollow space is formed in the main body 30 and the other end of the guide wire 10 is coupled to the main body 30. Although not shown in the present embodiment, a drug supply pipe for supplying a drug with a guide wire, a connection line connected to the camera, and the like are disposed inside the main body 30.

The driving device 40 is for driving (rotating) the guide wire 10 by pulling or pulling the driving wire 20. In the present embodiment, the driving device 40 is rotatably coupled to the rotary shaft 31 provided in the main body. The other end of the driving wire 20 is coupled to both ends of the driving device 40. 3, when the driving device 40 is rotated in one direction (arrow a), any one of the two driving wires 20 is pulled, Is rotated in the direction of arrow A. When the driving device 40 is rotated in the other direction (arrow b), the guide wire 10 is rotated in the direction of arrow B. Then, when the driving device is put in a state in which the driving device 40 is rotated in any direction, the driving device is returned (that is, pulled out) to its original position, and accordingly, the guide wire 10 returns to its original state. At this time, a torsion spring (not shown) may be installed on the driving device so that the driving device can be returned to the home position.

The forming unit 50 is for removing (scraping) a part of the body tissue such as the nerve for neural molding. The forming unit 50 according to the present embodiment includes a first moving wire 51, a second moving wire 52, and a forming wire 53. The first moving wire 51 is elongated in one direction and is slidably inserted into the first insertion passage 13 along the guide wire. The second moving wire 52 is elongated in one direction and is slidably inserted into the second insertion passage 14. The first moving wire 51 and the second moving wire 52 pass through the inside of the body and the lower ends of the first moving wire 51 and the second moving wire 52 And is exposed to the outside of the main body 30. A stopper member 60 is coupled to the lower ends of the first moving wire and the second moving wire. 5, one end of the forming wire 53 is connected to the upper end of the first moving wire 51, and the forming wire 53 is connected to the upper end of the first moving wire 51, 53 are coupled to the upper end of the second moving wire 52. [ The forming wire 53 is preferably made of a material having elasticity so that it can be bent (folded) when an external force is applied and can be unfolded again when an external force is removed. In particular, in this embodiment, as shown in Fig. 6, the forming wire 53 has a plurality of fine wires formed in a twisted shape, and thus has elasticity.

5 (a), when the first moving wire 51 and the second moving wire 52 are pulled downward, the molding wire 53 (that is, the molding unit 53) The forming wire 53 is inserted into the inside of the guide wire 10 while the other end of the forming wire 53 is folded in half. In this case, although the central portion of the forming wire is shown as being in contact with the end face of the guide wire and not inserted into the guide wire in Fig. 5 (a), the length of contact with the end face of the guide wire is very small Therefore, it can be said that the forming wire is inserted into the guide wire. The position at which the forming wire 53 is inserted into the guide wire, that is, the position shown in Fig. 5 (a), is the unused position.

5 (b), when the first moving wire and the second moving wire are pushed upward to hold the stopper member, the first moving wire and the second moving wire are slid up, 53 are exposed to the outside of the guide wire 10 (that is, moved to the use position). When the forming wire 53 is exposed to the use position as described above, the forming wire 53 is formed into an annular shape by the elastic force of the forming wire 53 as shown in FIG. 5 (b) And both ends of the forming wire are engaged with the first moving wire and the second moving wire, so that they are annularly expanded).

In the present embodiment, the first moving wire 51, the second moving wire 52 and the forming wire 53 have been described as separate structures. However, the first moving wire 51, the second moving wire 52, May be integrally formed (that is, one wire may be used by folding in half). In the present embodiment, the first insertion passage and the second insertion passage are formed, and the first moving wire and the second moving wire are inserted into separate insertion passages. However, You can also insert wires together.

7 is a cross-sectional view illustrating a process of moving a molding unit in a catheter according to another embodiment of the present invention.

Referring to Fig. 7, according to the present embodiment, the molding unit 70 includes a moving wire 71 and a forming wire 72. Fig. The moving wire 71 is elongated in one direction and is slidably inserted into the insertion path formed in the guide wire. The forming wire 72 is formed in an annular shape, and one end of the forming wire 72 is coupled to the upper end of the moving wire 71.

In the thus configured forming unit, when the moving wire 71 is pulled downward, the forming wire 72 is folded in half and moved to the unused position (i.e., inside the guide wire) as shown in Fig. 7A. When the moving wire 71 is pushed up, the forming wire 72 is moved to the use position (that is, exposed outside the guide wire) .

As described above, according to the present embodiment, when the nerve molding is performed, the molding wire may be moved to the use position and the nerve molding may be performed with a ring-shaped molding wire. When the nerve molding is not performed, the molding wire may be moved to the unused position. That is, according to the present embodiment, when the nerve molding is not performed, the forming wire is disposed inside the guide wire, so that it is not disturbed by the forming wire when performing other operations (for example, The molded wire will protrude outward to cover the view of the camera). In addition, when the nerve molding is performed, the molding wire can be moved to the use position and the nerve molding can be performed with the annular forming wire.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation in the embodiment in which said invention is directed. It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

100 ... catheter 10 ... guide wire
20 ... drive wire 30 ... body
40 ... drive device 50 ... forming unit
51 ... first moving wire 52 ... second moving wire
53 ... forming wire 60 ... stopper member

Claims (6)

A guide wire which is formed in a long direction in one direction and is made of a flexible material and inserted into a patient's body,
A driving wire inserted into the guide wire and elongated in the longitudinal direction of the guide wire, one end of which is coupled to one end of the guide wire,
A body to which the other end of the guide wire is coupled,
And a driving device installed in the main body and coupled to the other end of the driving wire to rotate one end of the guide wire by pulling or pulling the driving wire,
A molding unit which is formed to be long in one direction and slidably inserted into the guide wire and which is moved between an unused position where one end portion is inserted into the guide wire and a use position where the distal portion is exposed to the outside of the guide wire; Including,
The molding unit includes:
A first moving wire which is formed long in one direction and is inserted into the guide wire so as to be slidable along the longitudinal direction of the guide wire,
A second moving wire which is elongated in one direction and inserted into the guide wire so as to be slidable along the longitudinal direction of the guide wire,
Wherein one end portion is coupled to an end portion of the first moving wire and the other end portion is coupled to an end portion of the second moving wire and includes a forming wire moved between the use position and the unused position,
Wherein the forming wire has a shape in which a plurality of fine wires are twisted and folded when inserted into the guide wire and has elasticity so as to be unfolded when exposed to the outside of the guide wire. delete The method according to claim 1,
Wherein the guide wire is formed with a first insertion passage into which the first moving wire is inserted and a second insertion passage through which the second moving wire is inserted. delete delete The method according to claim 1,
Wherein in the guide wire, the end that contacts the forming wire when the forming wire is moved between the use position and the unused position is made of a wear resistant material.

Images