KR20110001551U - Drainage catherter with extendable balloon - Google Patents

Abstract

The present invention relates to a drainage catheter, which is one of the medical surgical instruments.

Balloon expansion drainage catheter of the present invention, the main pipe portion and the main tube portion is formed of a long, thin, flexible synthetic resin tube having a pigtail shape section of the rounded pigtail shape and a plurality of drainage holes are formed at the tip A flexible synthetic resin tube is formed to surround the main pipe portion from the outside of the pigtail-shaped section of the outer portion as the end is joined and sealed to the outer surface of the main pipe portion and the pressurized fluid is filled or discharged in the inner space The expansion and contraction of the balloon tube portion used to expand the constriction in the bile duct and the front end portion is connected to the open rear end portion of the balloon tube portion to expand the constriction in the bile duct and wrap the main tube portion from the outside to the rear end of the main tube portion Flexible synthetic resin tube formed to Insertion tube comprises emitter supplied or to be integrated into the outer tube to the inner transporting the pressurized fluid discharged from the balloon tube; A rigid synthetic resin body coupled to the rear end of the insertion tube having a double tube structure, which is formed to be in internal communication with the main tube part, transfers the liquid to be discharged therein, and has a locking means on the outside and the outer tube part and the inside. A hub assembly configured to be in communication with and integrated into a second hub tube configured to transfer the pressurized fluid therein; And one end is fixed to the pigtail-shaped section of the main tube section, extends through the main tube section, is connected to the locking means, and the peak tail section is deformed into a pigtail shape as it is pulled by the locking means. Sesame as possible; It includes.

Therefore, the procedure for expanding the stenosis in the bile duct and the drainage of stagnant bile or concentrate in the bile duct, which is almost accompanied by stenosis, can be performed at the same time or selectively, thereby providing simplicity and convenience of the procedure. This can save you money and time.

Drainage, Catheter, Dray, Pigtail, Balloon

Description

Balloon expansion drainage catheter {DRAINAGE CATHERTER WITH EXTENDABLE BALLOON}

The present invention relates to a drainage catheter, which is one of the medical treatment instruments, and more particularly, a procedure for expanding a narrowing area in the bile duct and drainage of stagnant bile or concentrate in the bile duct generated almost with such stenosis. The present invention relates to a catheter for balloon expansion drainage that can be performed simultaneously or selectively at a time, thereby providing simplicity and simplicity of the procedure.

In general, the drainage catheter is used for medical procedures to alleviate symptoms by draining and removing liquids, such as a liquid, from the lesion site in the abdominal cavity of the human body in vitro, simply called drainade. It may also be called a pigtail tail conduit or the like.

These drainage catheter is mainly used for percutaneous Catherter Drainage (PCD), transdermal transdermal tobacco liquor, etc., mostly used to discharge stagnant bile or concentrate to the lesion site in the bile duct.

For reference, bile ducts are bile (digestive fluid) produced and excreted in the liver or bile, which is temporarily stored and concentrated in the gallbladder (ie, gallbladder) after being produced and secreted by the liver. The tube that is sent toward the whole, and consists of liver, gallbladder, and bile duct, also called bile duct, biliary duct, gallbladder.

Prior arts related to such drainage catheter include the "catheter assembly" of the Republic of Korea Utility Model Registration No. 20-0286108 and the "medical catheter" of the Republic of Korea Patent Registration No. 10-0813147, the representative drawings for each prior art Are shown in FIGS. 1 and 2 (ie, FIGS. 2A and 2B), respectively.

A conventional drainage catheter is a long, thin and flexible tube for insertion, which has a pigtail shape that is circularly curled and has a plurality of drainage holes perforated therein, and a rear end of the insertion tube. A hub body coupled and having a locking means, and one end fixed to a pigtail-shaped section of the insertion tube, extending through an inner hole of the insertion tube, and then being threaded to be coupled to the locking means of the hub body; do.

Then, the action is inserted into the bile duct in the human body in the state that the pigtail-shaped pigtail-shaped section is stretched to date, the pigtail-shaped section is positioned to match the lesion site in the bile duct, the operator is located on the hub body located outside By pulling the fine yarn by operating the locking means, the pigtail-shaped section becomes a pigtail shape so that it will never fall out from the lesion site, and a plurality of drainage holes will be concentrated on the lesion site to smoothly flow bile or concentrate. As it is maintained in the state, the bile or the concentrate of the lesion area is introduced through the drainage holes on the pigtail-shaped section, flows inside the insertion tube and the hub body, and then is discharged and removed outside the procedure. To freely change the shape of the pigtail shape section. The emitter out to remove.

In addition, the rear end of the hub body is used in combination with a drainage storage bag (or container) for storing the discharged liquid or a syringe for forcibly inhaling the liquid. A guide wire inserted into the insertion tube for insertion into the human body is inserted from the outside through the hub body.

As can be seen from the above prior arts with respect to such drainage catheter, improvements to the locking means have been mainly made, and there are almost no improvements to other parts.

In connection with the drainage catheter, it is very important to accurately position the pigtail shape section having a plurality of drainage holes at the lesion site in the human body. have.

On the other hand, the bile ducts in the human body are frequently blocked or blocked due to stricture or blockage of the bile flow is blocked and bile is not discharged toward the duodenum.

Therefore, when such biliary atresia or stenosis occurs, a balloon dilatation or stent insertion is performed to expand the bile duct of the constricted portion and communicate the internal passage.

Balloon dilation allows the stenosis to be enlarged by inserting the balloon into the stenosis and then swelling by inserting a pressurized fluid, such as air, from the outside into the inserted balloon to maintain the expansion for a certain period of time. It is a procedure that draws out the pressurized fluid in the balloon, shrinks the balloon, and takes it out.

In addition, the stent implantation is a cylindrical mesh structure having elastic force, and the stent is compressed by applying external force, and then inserted into a stricture region in the human body using a separate pusher, and then removed from the external force. While restoring to its original form, the stenosis is pushed outwards to expand and maintained for a period of time to allow the stenosis to expand smoothly, followed by removal out of the body.

However, in most cases, when stenosis or blockage occurs in the bile ducts, bile or concentrate is stagnated in the blocked up part. Therefore, the procedure is complicated and difficult because the dilatation and drainage are performed separately. There are a number of problems, such as causing excessive, inhibiting the safety of the procedure, causing the hassle to prepare a variety of surgical instruments.

The present invention is devised to solve the above problems, by expanding or narrowing the stenosis site can be performed all at once or selectively, balloon expansion drainage catheter that can provide the simplicity and simplicity of the procedure The purpose is to provide.

The above object and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention by those skilled in the art.

The balloon expansion drainage catheter of the present invention for achieving the above object is formed of a long, thin and flexible synthetic resin tube having a pigtail-shaped section in which the plurality of drainage holes are formed in a tip tail shape that is rolled in a circular shape at the tip end thereof. A flexible synthetic resin tube which is formed to surround the main tube portion with a diameter extended from the rear of the pigtail-shaped section portion of the main tube portion and the main tube portion of the main tube portion, the front end portion is sealed and sealed to the outer surface of the main tube portion and pressed into the inner space As the fluid is filled or discharged, it expands or contracts, and the front end portion is joined to the balloon tube portion used to expand the constriction in the bile duct and the open rear end portion of the balloon tube as the expansion is connected to the rear end portion of the main tube portion. Flexible formed to surround the main pipe part from the outside Insertion tube provided as a synthetic resin tube from the outside, or be integrally formed with the outer tube to the inner transporting the pressurized fluid discharged from the balloon tube; A rigid synthetic resin body coupled to the rear end of the insertion tube having a double tube structure, which is formed to be in internal communication with the main tube part, transfers the liquid to be discharged therein, and has a locking means on the outside and the outer tube part and the inside. A hub assembly configured to be in communication with and integrated into a second hub tube configured to transfer the pressurized fluid therein; And one end is fixed to the pigtail-shaped section of the main tube section, extends through the main tube section, is connected to the locking means, and the peak tail section is deformed into a pigtail shape as it is pulled by the locking means. Sesame as possible; It includes.

Preferably, the pressurized fluid may be a contrast agent capable of imaging.

Also preferably, the balloon pipe part may be formed of a plurality of small balloon pipe parts of a small size spaced apart from each other along the longitudinal direction and communicated with each other, and a second drainage hole may be formed on the main pipe part externally exposed between the small balloon pipe parts. Can be.

According to the present invention, it is possible to simultaneously or selectively perform drainage of stagnant bile or concentrate in the bile duct, which is almost accompanied by a stenosis in the bile duct and a stenosis in the bile duct, thereby providing simplicity and simplicity of the procedure. In addition, the effect of saving the required cost and time can be achieved.

In particular, according to the present invention, since the balloon portion is inflated and closely adhered to the inner wall of the bile duct, the bile secreted from the corresponding inner wall portion of the bile duct can be smoothly discharged and removed, thereby reducing the side effects of the expansion procedure. Can also be achieved.

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

3 is a cross-sectional view showing a balloon expansion drainage catheter according to a first embodiment of the present invention, Figure 4 is a perspective view thereof.

The balloon expansion drainage catheter 100 according to the present invention has a long tail having a pigtail shape section portion 112a in which a plurality of drainage holes 112a-1 are formed while being in the shape of a pigtail that is rolled in a circular shape. It is a flexible synthetic resin body formed to surround the main tube part 112 with the diameter extended from the rear of the main pipe part 112 and the pigtail-shaped section 112a of the main pipe part 112 formed of a thin flexible plastic pipe body. A balloon tube 114 which is used to expand and contract as the tip portion is sealed to the outer surface of the main tube portion 112 and the pressurized fluid is filled or discharged into the inner space, and used to expand the constriction in the bile duct upon expansion The front end is joined to be connected to the rear end of the balloon tube part 114 to be opened, the flexible part is formed to surround the main tube part 112 from the outside to the rear end of the main tube part 112. Insertion tube 110 which is integrated into the outer tube portion 116 for internally conveying the pressurized fluid supplied from the outside or discharged from the balloon tube portion 114 as a synthetic resin tube, and the rear end portion of the insertion tube 110 of the double tube structure It is a rigid synthetic resin that is coupled to the main body 112 is formed in internal communication with the main tube portion 112 to transfer the liquid discharged to the inside and the internal communication with the first hub tube portion 142 and the outer tube portion 116 having a locking means (142a) on the outside One end is fixed to the hub assembly 140 and the pigtail-shaped section 112a of the main pipe part 112 formed to be integrated with the second hub pipe part 144 that transfers the pressurized fluid therein, and thus the main pipe part 112 is fixed. The thread 120 which extends through the inside and is connected to the locking means 142a and is pulled by the locking means 142a so that the pigtail shape section 112a is deformed into a pigtail shape. It includes.

In addition, it may further include a connection tube 130 formed of a flexible synthetic resin tube to seal the outer end portion of the insertion tube 110 and the front end portion of the hub assembly 140 to be tightly sealed.

Insertion tube 110 is composed of the main tube portion 112 and the balloon tube portion 114 and the outer tube portion 116 to be integrated, the balloon tube 114 front side is formed of a single tube structure of the main tube portion 112, the balloon The tube side 114 is formed in a double tube structure in which the outer tube portion 116 surrounds the main tube portion 112 from the outside.

The outer tube portion 116 is slightly smaller in diameter than the main tube portion 112 and has substantially the same diameter as the main tube portion 112, while the balloon tube portion 114 is sufficiently large as the pressurized fluid is filled therein. It has a diameter large enough to expand outward and expand the constriction in the bile duct.

The balloon tube 114 is formed such that its diameter is gradually reduced so that its front end can be joined to the outer surface of the main tube 112, and its rear end can also be joined with the relatively smaller outer tube 116 side. It can be formed so that the diameter gradually decreases.

The main tube part 112, the balloon tube part 114, and the outer tube part 116 constituting the insertion tube 110 are all flexible and are formed to minimize safety when inserted into the human body.

Here, the main tube portion 112 and the outer tube portion 116 is formed of the same material configuration, the balloon tube portion 114 is formed of a material configuration that can be more flexible and easily expanded or compressed deformation.

The balloon tube 114 may be formed of a transparent material so that the inside of the balloon tube 114 may be identified from the outside to provide convenience of use thereof.

The hub assembly 140 is formed of a rigid synthetic resin bonded to the rear end of the insertion tube 110 having a double tube structure. The hub assembly 140 is formed to be in internal communication with the main pipe part 112 to transfer and discharge the liquid to be discharged. It is formed to be in internal communication with the first hub tube portion 142 having the locking means (142a) and the outer tube portion 116 is made to be integrated into the second hub tube portion 144 for conveying the pressurized fluid inside.

Here, the first hub tube 142 is formed horizontally to form the same axis as the main tube 112, so that the guide core can be smoothly inserted into the main tube 112 through the inside of the initial procedure, the second hub tube portion 144 may be formed to be inclined laterally and branched as shown so as not to cause an operator's interference during the procedure with the first hub tube 142 side.

With respect to the opening rear end of the first hub tube 142 of the hub assembly 140, a drainage storage bag (or container) for storing the discharged liquid or a syringe for forcibly sucking the liquid or for preventing the liquid. An adapter for connecting to the blocking body or other external device is used in combination, and when the insertion tube 110 is inserted into the human body, an induction iron core is inserted into the main pipe part 112 to impart firmness through the inside thereof. do.

In addition, an opening mechanism for injecting a pressurized fluid may be coupled to the rear end of the second hub tube 144 of the hub assembly 140.

The fine thread 120 is fixed to the pigtail-shaped section 112a of the main pipe part 112, extends through the inside of the main pipe part 112, and then is connected to the locking means 142a. 142a) is pulled to one side and pulled tightly so that the pigtail shape section 112a forms a pigtail shape, while the user operates the locking means 142a to the other side to release the pull to release the pigtail shape section. Allow 112a to be freely changed in shape.

Specifically, the front end side and the rear end side of the pigtail-shaped section (112a) is formed with a through hole (112a-2), respectively, so that the fine thread 120 is connected to them, by pulling the fine thread 120 passes through the front end side The ball 112a-2 is close to the through hole 112a-2 of the rear end side, and the pigtail shape section 112a may form a pigtail shape.

In addition, the top end of the pigtail-shaped section 112a of the main pipe portion 112 is formed in a conical shape gradually decreasing in diameter so that it can be inserted into the human body smoothly.

In addition, the main tube 112 may not necessarily need to be provided at the center of the balloon tube 114, and the balloon tube 114 may not need to be formed to surround the entire 360 ° portion of the main tube 112. In addition, the outer tube portion 116 may likewise not need to be formed to surround the entire 360 ° portion of the main tube portion 112.

In addition, as the pressurized fluid used for filling the balloon tube 114, air, water, or the like may be used depending on circumstances, but most preferably, a contrast agent capable of photographing with an imaging device such as DSA may be used.

That is, during the procedure, it is important to precisely position the pigtail-shaped section 112a and the balloon tube 114 to the corresponding lesion site and to adjust the precise alignment position to be maintained. ) Can be used to confirm the location by taking a contrast medium with the imaging equipment can provide convenience.

With the configuration as described above, when explaining the operation, the balloon expansion drainage catheter 100 according to the present invention at the same time to drain the bile stagnant in the upper part of the stenosis with the expansion to expand the stricture in the bile ducts Can be performed.

That is, the pigtail-shaped section 112a is opened and the balloon tube 114 is inserted into the bile duct in the human body in a contracted state, thereby placing the balloon tube 114 in accordance with the constriction site, and then placing the second hub tube 144. Injecting a pressurized fluid from the outside through the balloon tube 114 is expanded, and by operating the locking means 142a on the first hub tube 142 to pull the fine thread 120, the pigtail shape section 112a is When maintaining for a certain period of time to form a complete pigtail shape, the bulging portion in the bile duct is expanded by the expanded balloon tube portion 114, and the plurality of drainage holes on the pigtail-shaped section portion 112a that has formed a pigtail shape. Stagnant bile is introduced through 112a-1 and discharged to the outside.

After the procedure is completed, the pressurized fluid in the balloon tube 114 is removed, and the locking means 142a is released to allow the pigtail shape section 112a to be freely changed in shape and then to be taken out and removed.

Of course, the balloon expansion drain catheter 100 according to the present invention may be selectively used for dilation or drainage.

5 is a cross-sectional view showing a balloon expansion drainage catheter according to a second embodiment of the present invention, Figure 6 is a perspective view thereof.

In the description of the second embodiment, the same configuration as in the above-described first embodiment will be omitted, and only the differentiating configuration will be described.

According to the second embodiment, the balloon tube part 114 described above is formed of a plurality of small balloon tube parts 114-1 ′ of a small size which are spaced apart from each other and communicate with each other along the longitudinal direction, and the corresponding small balloon pipe parts 114 are provided. '1' is connected in internal communication with each other via a small diameter connecting tube portion 114-2 'having the same diameter as the outer tube portion 116.

That is, both ends of the small diameter connecting tube portion 114-2 ′ are formed to be connected to the corresponding ends of the small balloon tube portion 114-1 ′, respectively, or integrated into one from the beginning.

In addition, the small diameter connecting pipe portion 114-2 ′ is not formed to surround the outside of the main pipe portion 112 along the 360 ° front direction, and is formed only for a partial angle range, and thus, a part of the outer side surface of the main pipe portion 112. Is externally exposed as it is, and one or more second drain holes 112b are formed in the exposed portion.

Of course, the end portion of the small balloon tube 114-1 ′ that is not connected to the small balloon tube 114-1 ′ is joined and sealed to the outer surface of the main tube portion 112.

As a result, a second drainage hole 112b is formed between the small balloon tubes 114-1 ', and the pressurized fluid is filled into the second drain hole 112b in the small balloon tubes 114-1'. As they expand, the bile secreted from the corresponding wall portion of the bile duct is introduced and discharged to the outside in a state in which the inner wall of the bile duct is in close contact with each other.

Thus, the bile secreted from the bile duct inner wall portion of the adhered portion can be prevented from stagnating in the state where the balloon tube portion 114 is inflated and pressed against the inner wall of the bile duct in accordance with the first embodiment.

As described above, the above description merely illustrates a preferred embodiment of the present invention, and those skilled in the art should recognize that modifications and changes can be made to the present invention without changing the subject matter of the present invention.

1 is a view showing a "catheter assembly" of the Republic of Korea Utility Model Registration No. 20-0286108

2a and 2b is a view showing a "medical catheter" of the Republic of Korea Patent No. 10-0813147 of the prior art,

3 is a cross-sectional view showing a balloon expansion drainage catheter according to a first embodiment of the present invention,

4 is a perspective view showing a balloon expansion drainage catheter according to a first embodiment of the present invention,

5 is a cross-sectional view showing a balloon expansion drain catheter according to a second embodiment of the present invention,

6 is a perspective view showing a balloon expansion drainage catheter according to a second embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100: balloon expansion drainage catheter 110: insertion tube

112: main pipe portion 112a: pigtail shape section portion

112a-1: drainage hole 112a-2: through hole

112b: second drain hole 114: balloon tube

116: outer tube portion 120: fine yarn

130: connection tube 140: hub assembly

142: first hub tube portion 142a: locking means

144: second hub tube 114-1 ': small balloon tube

114-2 ': small diameter connecting pipe

Claims (3)

It extends from the rear of the pigtail-shaped section of the main tube and the main tube formed of a long, thin and flexible synthetic resin tube having a pigtail-shaped section having a rounded pigtail shape and having a plurality of drainage holes formed at the distal end thereof. Flexible synthetic resin tube is formed to surround the main tube portion in the outer diameter, the end portion is bonded and sealed to the outer surface of the main tube portion and expands or contracts as the pressurized fluid is filled or discharged into the inner space, and the stenosis in the bile duct as the expansion It is a flexible synthetic resin body which is formed so as to surround the main pipe part from the outside to the rear end of the main pipe part is connected to the balloon pipe part used to expand the site and the rear end opening of the balloon pipe part is connected to the outside supply from the outside. Or from the balloon tube It is formed integrally with the outer tube to the inner transfer a pressurized fluid output that is inserted the tube; A rigid synthetic resin body coupled to the rear end of the insertion tube having a double tube structure, which is formed to be in internal communication with the main tube part, transfers the liquid to be discharged therein, and has a locking means on the outside and the outer tube part and the inside. A hub assembly configured to be in communication with and integrated into a second hub tube configured to transfer the pressurized fluid therein; And One end is fixed to the pigtail-shaped section of the main tube section, extends through the inside of the main tube section, and then is connected to the locking means so that the peaktail section is deformed into a pigtail shape as it is pulled by the locking means. Cesarean; Balloon expansion drainage catheter comprising a. The method of claim 1, The pressurized fluid, Balloon expansion drainage catheter, characterized in that the imaging agent capable of imaging. The method according to claim 1 or 2, The balloon tube portion is formed of a plurality of small balloon tube portion of a small size spaced apart from each other along the longitudinal direction and in internal communication, A balloon expansion drainage catheter, characterized in that a second drainage hole is formed on the main pipe portion that is externally exposed between the small balloon pipe portion.

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