JP3120415B2 - Irrigation suction catheter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an irrigation and suction catheter for draining body fluids such as blood and exudate from a wound or the like and for cleaning the wound or the like in an operation such as thoracotomy or laparotomy.

[0002]

2. Description of the Related Art Conventionally, during surgery such as thoracotomy and laparotomy, bodily fluids such as blood and exudate flowing from a wound or the like are drained by suction using a cleaning catheter and a drainage catheter, respectively. The removal was performed by repeating the washing with the supply of the washing liquid, and the operation was complicated. Therefore, in order to avoid such complication, a device in which two catheters are incorporated in one device (Japanese Patent Application Laid-Open No. 57-1)
No. 77758, Japanese Patent Publication No. 4-9543, etc.) have been proposed. The device disclosed in Japanese Patent Application Laid-Open No. 57-177758 uses a surgical suction device in which a syringe barrel and a plunger of a syringe are improved.
In the apparatus disclosed in Japanese Patent No. 9543, a cleaning liquid supply pipe and a suction pipe are integrated so that a cleaning liquid supply operation and a suction operation can be alternately performed from one outlet pipe.

[0003]

However, a device incorporating such two catheters in a single device is:
In any case, since the cleaning liquid supply operation and the suction operation are performed alternately, there is a possibility that pus and harmful substances in the body generated from the wound during the cleaning liquid supply operation may diffuse and transfer to other places,
There was a danger that an unexpected situation would occur when the substance sucked at the tip of the suction tube closed the tube and switched to the suction operation, making it impossible to perform suction. The present invention has been made in view of the above circumstances, and while sucking bodily fluids such as blood and exudate from a wound or the like, supplying a washing liquid at any time to clean the wound, fluidizing the bodily fluid to facilitate the suction operation. It is an object of the present invention to provide an irrigation and suction catheter for making a catheter.

[0004]

According to the present invention, in order to solve the above-mentioned problems, an inner tube is inserted into an outer tube, and a liquid suction passage is formed between an inner wall of the outer tube and an outer wall of the inner tube. A catheter body, a first connection tube having a connection end to a suction device, a second connection tube having a connection end to a cleaning liquid supply device, and a liquid suction passage of the catheter body communicating with the first connection tube and an inner tube. A communication member communicating with the second connection tube outside the outer tube; and a fluid passage opening / closing device provided adjacent to the communication member, wherein the lumen of the second connection tube is opened / closed as needed by the fluid passage opening / closing device. A cleaning and suction catheter that allows a cleaning liquid to flow intermittently, and is connected to an outer tube at a distal end of the catheter main body to perform liquid suction. It adopts a structure in which a tip member having communicated the channel and is the channel connected to the inner tube and.

[0005]

According to the above construction, body fluid such as blood or exudate from the wound is sucked into the liquid suction passage from the distal end member by the suction force of the suction device, and passes through the first connection tube connected thereto. Is discharged. On the other hand, the cleaning liquid supplied from the cleaning liquid supply device passes through the second connection tube opened by pressing the push button as needed, and is poured out from the distal end member to around the wound through the inner tube connected thereto. It is.

[0006]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a cleaning suction catheter according to one embodiment of the present invention, FIG. 2 is a longitudinal sectional view of a distal end portion of the cleaning suction catheter shown in FIG. 1, and FIG. FIG. 4 is a front view, FIG. 4 is a longitudinal sectional view near the fluid passage opening / closing device of the irrigation suction catheter shown in FIG. 1, and FIG.
FIG. 4 is a diagram showing a state when a push button is pressed in FIG. As shown in FIGS. 1 to 3, the cleaning / suction catheter of the present invention comprises an outer tube 11 and an inner tube 12 inserted therein, and has a catheter body having a liquid suction passage 13 between the two tubes 11 and 12. 1, the first connection tube 2, the second connection tube 3, the liquid suction path 13 and the first
Connect the connection tube 2 and the inner tube
A communication member 4 for connecting the connection tube 3 and a fluid passage opening / closing device 5 for opening and closing the second connection tube 3 intermittently as needed.
The distal end member 6 having flow paths 61 and 62 is provided at the distal end of the catheter main body 1. The outer tube 11 and the inner tube 12 are connected to the flow paths 61 and 62 of the tip member 6, respectively, and the liquid suction path 1
The channel 3 communicates with the channel 61, and the inner tube 12 communicates with the channel 62.

The communication member 4 communicates the liquid suction passage 13 of the catheter body 1 with the first connection tube 2 and communicates the inner tube 12 with the second connection tube 3 outside the outer tube 11. A first communication passage 41 that communicates the passage 13 with the first connection tube 2, and a second communication passage 42 that communicates the inner tube 12 with the second connection tube 3
have. A first communication path 41 and a second communication path 42 are opened concentrically on the connection end side with the catheter body 1 and connected to the outer tube 11 and the inner tube 12, respectively. Is connected to the first connection tube 2, and the other end of the second communication passage 42 is connected to the first connection tube 2.
It protrudes out of the tube wall constituting the communication passage 41 and is connected to the second connection tube 3.

The catheter body 1 includes an outer tube 11 and an inner tube 1 inserted into a lumen of the outer tube 11.
2 and the outer diameter of the inner tube 12 is
The diameter of these outer tubes 11
Between the inner wall of the inner tube and the outer wall of the inner tube 12
3 are formed. The distal end member 6 attached to the distal end of the catheter main body 1 prevents the inner tube 12 from oscillating when the cleaning liquid is supplied. As shown in FIG. 2 and FIG. Road 61
And a flow path 62 communicating with the inner tube 12. The tip is usually, but not limited to, formed in a hemispherical shape so as not to damage tissue. The channels 61 and 62 are independent and are usually formed concentrically.
The communication between the liquid suction path 13 and the flow path 61 is achieved by connecting the outer tube 11 to the flow path 61, and the communication between the inner tube 12 and the flow path 62 is performed by connecting the inner tube 12 to the flow path 62. Achieved. In order to enhance the cleaning effect, the flow channel 62 may be opened at a more distal end side than the flow channel 61, so that a part of the cleaning liquid is not sucked from the flow channel 61 before cleaning the wound.

The first connection tube 2 has a connection end 21 to a suction device (not shown), and is connected to the outer tube 11 via the communication member 4. Therefore, the first
When the connection end 21 of the connection tube 2 is connected to the suction device and driven, the body fluid is sucked into the flow path 61 of the distal end member 6 by the suction force, passes through the liquid suction path 13 and passes through the first communication path 41 and the second communication path. It is discharged outside through one connection tube 2.

On the other hand, the second connection tube 3 has a connection end 31 to a cleaning liquid supply device (not shown), and is connected to the inner tube 12 via the communication member 4.
A fluid passage opening / closing device 5 is attached to the inner tube 12 adjacent to the communication member 4, whereby the lumen of the inner tube 12 can be opened and closed intermittently as needed. Therefore, when the fluid passage opening / closing device 5 is opened, and the connection end 31 of the second connection tube 3 is connected to the cleaning liquid supply device and is driven, the cleaning liquid passes through the second connection tube 3 and the second connection of the communication member 4. It is sent to the passage 42 and is poured into the wound through the inner tube 12 and the flow path 62 of the tip member 6.

The fluid passage opening / closing device 5 is for opening and closing the lumen of the inner tube 12 as needed to allow the washing liquid to flow intermittently. As shown in FIGS. 4 and 5, a cylindrical body 51 and a frame 52 are provided. It comprises a push button 53 and a spring 54. The tubular body 51 surrounds and accommodates the first connection tube 2 in a direction perpendicular to the longitudinal direction, and the frame body 52 surrounds the first connection tube 2 and the second connection tube 3 in a direction perpendicular to the longitudinal direction. Extend slidably through the wall of the tubular body 51. A push button 53 is fixed to an end of the frame 52 on the first connection tube 2 side, and a spring 54 is provided between the push button 53 and the tubular body 51. In such a configuration, the push button 53 is pushed up in the direction of the arrow A by the elastic urging force of the spring 54, so that the frame 5 fixed to the push button 53
2 also moves in the direction of arrow A and presses the second connection tube 3 against the tubular body 51 to close it closed. Such a closed state of the second connection tube 3 is released by pressing the push button 53. That is, when the push button 53 is pressed, the spring 54 contracts and the frame 52 moves in the direction of arrow B.
The second connection tube 3 is separated from the tubular body 51, and the closed state of the second connection tube 3 by the frame 52 is released.

Since the outer tube 11 and the first connection tube 2 are required to have rigidity so as not to be collapsed by the negative pressure caused by the suction of the suction device, they are formed of a harder material than the inner tube 12 and the second connection tube 3. Good to do. As the forming material of the outer tube 11 and the first connecting tube 2, a soft synthetic resin such as polyethylene, polypropylene, polyester, or soft polyvinyl chloride is preferably used, and the forming material of the inner tube 12 and the second connecting tube 3 is preferably used. The same material as that of the outer tube 11 is used, but a softer synthetic resin such as urethane rubber or silicone rubber is used to enhance the opening / closing effect of the inner tube 12 by the fluid passage opening / closing device 5. Is also good. Further, as the forming material of the communication member 4 and the tip member 6,
Relatively hard synthetic resins such as polypropylene, polyester, hard polyvinyl chloride, polystyrene, and ABS resin are used.

[0013]

As is clear from the above description, by using the cleaning and aspiration catheter of the present invention, the cleaning liquid is supplied as needed while aspirating body fluid such as blood and exudate from a wound or the like. Since the suction operation can be performed by washing the wound and fluidizing the body fluid, the time required for the suction operation can be reduced. In addition, as in the case where the cleaning liquid supply operation and the suction operation are performed alternately, pus and harmful substances in the body that are generated from the wound during the cleaning liquid supply operation are diffused and transferred to other parts, and the tip of the suction tube is It is possible to avoid such a situation that when the sucked substance closes the pipe and the operation is switched to the suction operation, the suction becomes impossible.

[Brief description of the drawings]

FIG. 1 is a side view of a cleaning suction catheter according to one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a distal end portion of the irrigation suction catheter shown in FIG.

FIG. 3 is a front view of the tip member shown in FIG. 2;

FIG. 4 is a longitudinal sectional view of the vicinity of a fluid passage opening / closing device of the irrigation suction catheter shown in FIG. 1;

FIG. 5 is a diagram showing a state when a push button is pressed in FIG. 4;

[Description of Signs] 1 Catheter main body 11 Outer tube 12 Inner tube 13 Liquid suction path 2 First connection tube 3 Second connection tube 4 Communication member 5 Fluid passage opening / closing device 51 Cylindrical body 52 Frame 53 Push button 54 Spring 6 Tip Element

Claims (4)

(57) [Claims] 1. A first connection tube having a catheter body in which an inner tube is inserted through an outer tube, a liquid suction passage formed between an inner wall of the outer tube and an outer wall of the inner tube, and a connection end to a suction device. A second connection tube having a connection end to the cleaning liquid supply device, a communication member that communicates the liquid suction passage of the catheter body with the first connection tube, and that communicates the inner tube with the second connection tube outside the outer tube; A cleaning and suction catheter comprising a fluid passage opening and closing device provided adjacent to the communication member, wherein the lumen of the second connection tube is opened and closed as needed by the fluid passage opening and closing device so that the washing liquid can intermittently flow. And a flow path connected to the outer tube and connected to the liquid suction path and a flow path connected to the inner tube at the distal end of the catheter body. A cleaning suction catheter characterized in that a tip member is provided. 2. The irrigation and suction catheter according to claim 1, wherein the flow path communicating with the inner tube of the distal end member is open on the distal end side with respect to the flow path communicating with the liquid suction path. 3. A tubular body, wherein the fluid passage opening / closing device surrounds and accommodates the first connection tube in a direction perpendicular to the longitudinal direction.
A frame extending slidably through the wall of the tubular body and surrounding the first connection tube and the second connection tube in a direction perpendicular to the longitudinal direction; and an end of the frame on the first connection tube side , And a spring provided between the push button and the tubular body, and the second connection tube is closed by the frame moved in the push button direction by the elastic biasing force of the spring. 3. The structure according to claim 1, wherein the spring is contracted by pressing the push button, the frame body moves toward the second connection tube, and the closed state of the second connection tube is released. Washing suction catheter. 4. The irrigating suction catheter according to claim 1, wherein the communication member is formed integrally with the fluid passage opening / closing device.