JP2006150052A - Suction aid for catheter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction aid for a catheter, which cannot hurt mucous membrane or the like of an oral cavity, bronchi or the like to be excellent in safety and suctioning operation, can be easily attached to/detached from the catheter to be easy in changing and cleaning, and excellent in hygiene and maintenance, is hard to be detached from the catheter when applied, can be easily put in/out of the oral cavity or bronchi to be excellent in operation, and cannot reduce suction force of the catheter to be excellent in practical use and credibility. <P>SOLUTION: The suction aid is equipped with an attached part provided on an end part of a tubular part, which is detachably attached to a tip of the catheter, a suctioning part provided on the other end part of the tubular part, whose tip can be curved, and a channel part to pierce inside of the attached part, the tubular part, and the suctioning part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a suction assisting device for a catheter that is detachably attached to the distal end of a catheter for sucking and removing saliva and sputum in the oral cavity and bronchi.

In hospitals and the like, saliva and sputum are sucked and removed by applying a tube-shaped catheter to the patient's mouth during treatment. However, although the conventional catheter has a slightly rounded tip, it is actually a shape that is merely a cut of a tubular object. There was a problem of hurting and lacking safety. Moreover, since the mucous membrane etc. in the oral cavity are damaged, there has been a problem that the handling has to be done with care and it takes time to suck and lacks workability.
Further, as an improvement in the shape of the tip of the suction tube (Patent Document 1), “In a medical foreign matter suction tube, a trumpet tip made of an elastic material is attached to the tip of the suction tube, and in the vicinity of the continuous portion of the suction pump. An improved foreign matter suction tube characterized in that a lateral hole is provided is disclosed.
Japanese Utility Model Publication No. 60-55410

However, the above conventional techniques have the following problems.
(1) The improved foreign substance suction tube of Patent Document 1 has a trumpet tip made of an elastic material at the tip of the suction tube, but when inserted into the oral cavity, the corner of the outer periphery of the tip of the trumpet tip As a result, there is a risk that the mucous membrane or the like in the patient's oral cavity may be damaged, and the safety is not sufficiently improved.
(2) Since the tip is formed in a trumpet shape, the tip has a large diameter, and when it is put in and out of the oral cavity, it has a problem that it is easily caught in the lips and the oral cavity and lacks in usability.
(3) Since the tip is formed in a trumpet shape, there is a problem that the suction force is dispersed and the suction property is lacking.
(4) The conventional catheter or the improved foreign substance suction tube of (Patent Document 1) has a problem that the catheter is directly placed in the oral cavity, so that the catheter needs to be cleaned and lacks hygiene, and the cleaning work is complicated and lacks maintenance. Had.

  The present invention solves the above-described conventional problems, and there is no risk of damaging the mucous membrane of the oral cavity, bronchi and the like, and it is excellent in safety and suction workability, and can be easily attached to and detached from the catheter. Suction aids for catheters that are easy to use and maintain, are easy to put in and out of the oral cavity and bronchus, are easy to operate, and do not reduce the suction force of the catheter, and are highly practical and reliable. The purpose is to provide.

In order to solve the above-described problems, the catheter suction assisting tool of the present invention has the following configuration.
The suction assisting device for a catheter according to claim 1 of the present invention includes a mounting portion that is formed at an end portion of the tubular portion and is detachably attached to the distal end of the catheter, and a distal end having a curved surface at the other end portion of the tubular portion. The suction part formed in a shape, the mounting part, the tubular part, and a passage part that penetrates the inside of the suction part.
This configuration has the following effects.
(1) The end of the mounting part can be easily attached to and detached from the distal end of the catheter. Therefore, after the suction operation, the catheter suction assisting tool can be removed and replaced or cleaned, so that hygiene and maintenance are excellent.
(2) Since the tip of the suction part is formed into a curved surface, there are no corners that cause damage to the mucous membrane of the oral cavity or bronchi, etc. The mucous membrane etc. even if it is placed in the oral cavity or inserted into the bronchus Can be used safely without damaging the surface, and the suction workability can be improved.
(3) Saliva, sputum and the like sucked in communication with the catheter can be discharged from the catheter by having a passage portion that penetrates the mounting portion, the tubular portion, and the suction portion.

  Here, the tubular portion and the mounting portion are made of a synthetic resin such as polypropylene, polyethylene, soft rubber, EPDM, polyurethane, nylon, acrylic resin, or a metal having corrosion resistance such as titanium, aluminum alloy, stainless steel, or the like. Those are preferably used. Synthetic resin products are excellent in processability, low cost, and corrosion resistance, are excellent in cleaning properties and boiling resistance, and are excellent in reliability because they are less likely to damage the catheter when attached to the catheter. A metal product is excellent in durability, and a titanium product is particularly preferable because it is lightweight and excellent in biocompatibility. In addition, since there is a certain amount of stiffness, it is excellent in operability when inserted into the bronchus.

  When the tubular portion is mounted by inserting the mounting portion into the through hole of the catheter, the outer diameter of at least the catheter side end of the mounting portion is preferably the same as or slightly larger than the through hole of the catheter. . Since the catheter is made of a stretchable material such as vinyl chloride resin or rubber, the diameter of the catheter's through-hole is increased to match the outer diameter of the attachment part, and the attachment part can be inserted and attached. Is preferable because it is less reliable because the mounting portion is not likely to come off the through hole. In addition, the catheter may be inserted and inserted into a passage portion formed in the mounting portion. In this case, the diameter of at least the end on the catheter side of the passage is preferably the same as or slightly smaller than the outer diameter of the catheter. Thereby, the catheter can be inserted into the passage portion and mounted, and after the mounting, there is little risk of detachment, which is excellent in reliability and preferable.

The total length of the catheter suction assisting tool is preferably formed such that the end of the catheter does not enter the oral cavity when the end of the attachment is attached to the catheter. Thereby, since it can prevent that patient's saliva, wrinkles, etc. adhere to the surface of a catheter, by washing | cleaning and using repeatedly the catheter suction assistance tool, or making the catheter suction assistance tool disposable, It excels in hygiene and maintainability and is practical because it does not require cumbersome catheter cleaning. In addition, since the suction operation can be performed by grasping the tubular portion or the mounting portion, the operability and the suction workability are excellent as compared with the case of performing the suction operation by grasping the easily deformable catheter. The catheter can be reliably prevented from coming off and has excellent reliability.
In particular, when the overall length of the catheter suction assisting tool is 20 cm to 30 cm, the suction portion can be inserted into the bronchus to perform the suction operation. As the total length of the suction aid for catheter becomes shorter than 20 cm, the catheter enters the oral cavity, and it becomes difficult to grasp the tubular part and the attachment part and to penetrate the suction part into the bronchus. Tends to decrease, and as it becomes longer than 30 cm, it tends to be difficult to handle.

  For the suction part, the same material as that of the tubular part and the attachment part is preferably used for the same reason, and there is little risk of damaging the mucous membrane or the like during suction in the oral cavity or bronchus, which is excellent in safety. In particular, safety can be improved by using an elastic material such as silicon rubber. Further, the tubular portion, the mounting portion, and the suction portion may be formed integrally or separately, and when formed integrally, it is excellent in productivity and preferable. When formed separately, for example, it is possible to replace only the suction part with a different size in accordance with the patient's physique and application, which is preferable in terms of practicality.

  A passage having a diameter approximately equal to the inner diameter of the catheter is preferably used. By using the same diameter, there is no fear that the suction force is reduced, and the reliability is excellent. When the catheter is inserted and attached to the passage portion formed in the attachment portion, it is preferable to form a step in a portion where the catheter is inserted in accordance with the outer shape of the catheter. Thereby, the diameter of the passage portion can be formed with the same diameter as the diameter of the through hole of the catheter, and the suction force is not lowered, and it is excellent in reliability and preferable. In addition, when the diameter of at least the end portion on the suction portion side of the passage portion is increased from the mounting portion side toward the suction portion side, the range in which suction can be performed is widened, which is preferable in terms of practicality. In addition, when the tip of the passage part on the suction part side is formed in a curved shape, it is excellent in safety without damaging the mucous membrane such as the oral cavity and bronchus, and can smoothly suck saliva and sputum along the curved surface. This is preferable.

The catheter suction assisting tool according to claim 2 of the present invention is the catheter suction assisting tool according to claim 1, wherein the suction part is any one of a substantially hemispherical shape, a substantially spherical shape, and a substantially elliptical spherical shape. It has the structure formed in this shape.
With this configuration, in addition to the operation of the first aspect, the following operation is provided.
(1) Since the suction part is formed in any one of a substantially hemispherical shape, a substantially spherical shape, and a substantially elliptical spherical shape, it is easy to get caught in the teeth, the oral cavity, the bronchus, etc. Can be put in and out.
Here, when the outer diameter of the suction part is formed to 3 mm to 6 mm, it can be used for children or inserted into the bronchus, and is excellent in versatility. As the outer diameter of the suction part becomes smaller than 3 mm, it becomes difficult to form a passage part, and the amount of suction tends to decrease, and as it becomes larger than 6 mm, it tends to become difficult to penetrate into the bronchus. However, neither is preferable.

When the mounting portion is configured to include a guide portion formed with a reduced diameter toward the end on the catheter side, the mounting portion can be easily inserted into the catheter and mounted using the guide portion as a guide. it can.
In addition, when it is configured to have a ridge or uneven portion formed on the outer peripheral surface of the mounting portion, the ridge formed on the outer peripheral surface of the mounting portion when the mounting portion is inserted into the catheter and mounted. The attachment portion can be firmly attached by the portion or the uneven portion so that the attachment portion is not easily detached from the catheter.
As the ridge or concavo-convex portion, a continuous ridge, a discontinuous convex portion formed at random, a spiral groove, or the like is preferably used.

A suction assisting device for a catheter according to claim 3 of the present invention is the suction assisting device for catheter according to claim 1 or 2, comprising a protrusion formed on an outer surface of a rear portion of the mounting portion. It has a configuration.
With this configuration, in addition to the operation of the first or second aspect, the following operation is provided.
(1) Since the protrusion formed on the outer surface of the rear portion of the mounting portion is provided, the catheter suction assisting tool can be easily removed without slipping by grasping the protrusion.
(2) When inserting the attachment part into the catheter, the protruding part serves as a stopper to prevent the attachment part from being inserted deeper than necessary, and it can be easily detached and hygienic without the catheter entering the oral cavity. Excellent.
Here, the protruding portion can be formed on a part or the entire circumference of the outer surface of the rear portion of the mounting portion. When the protrusion is formed in an annular shape around the entire outer surface of the mounting portion, it is preferable that the portion to be grasped need not be taken care of and can be quickly grasped.

A catheter suction assisting tool according to a fourth aspect of the present invention is the catheter suction assisting tool according to any one of the first to third aspects, wherein the tubular portion communicates with the passage portion. And a suction adjustment hole opened on the surface of the tubular portion.
With this configuration, in addition to the operation of any one of claims 1 to 3, the following operation is provided.
(1) Since the suction adjustment hole is provided, the suction force can be adjusted. When saliva or sputum is not sucked, air is sucked by opening the suction adjustment hole and the suction force is reduced. In the case of sucking saliva, sputum or the like, the suction force can be increased and the suction can be accurately performed by closing the suction adjustment hole.
Here, the suction adjustment hole may be closed by directly pressing a finger or the like by an operator, or a sliding or rotating lid is provided and operated to open and close the suction adjustment hole. You may make it perform.

A catheter suction assisting tool according to a fifth aspect of the present invention is the catheter suction assisting tool according to any one of the first to fourth aspects, wherein the suction portion communicates with the passage portion. And having at least one suction auxiliary hole opened on the surface of the suction part.
With this configuration, in addition to the operation of any one of claims 1 to 4, the following operation is provided.
(1) Since the suction part includes at least one or more suction auxiliary holes, the range in which suction can be performed is widened, and the suction efficiency can be improved.
(2) When a plurality of suction auxiliary holes are formed, even if some of the suction auxiliary holes are clogged with saliva, sputum or the like, it can be sucked with other suction auxiliary holes, and workability can be improved.
Here, the number of suction auxiliary holes is preferably 1 to 8. As the number of auxiliary suction holes is more than eight, the structure of the suction part becomes complicated and the productivity tends to be low, and the strength tends to be insufficient. In addition, when a suction assist hole is formed in the tip half on the suction side of the suction part, the suction assist hole reaches a deep part in the oral cavity or bronchus, and is easy to apply to saliva, sputum, etc. Excellent and preferred.

As described above, according to the catheter suction aid of the present invention, the following advantageous effects can be obtained.
According to invention of Claim 1, it has the following effects.
(1) The mounting portion can be easily attached to and detached from the distal end of the catheter, and is excellent in usability. Therefore, after the suction operation, the catheter suction assisting tool can be removed and replaced or cleaned, so that the catheter suction assisting tool excellent in hygiene and maintenance can be provided.
(2) Since the tip of the suction part is formed in a curved surface, there is no corner that causes damage to the mucous membrane of the oral cavity and bronchi, etc. Even if it is applied to the oral cavity or inserted into the bronchus, the mucous membrane etc. It is possible to provide a suction assisting device for a catheter that is excellent in safety and suction workability without being damaged.
(3) A suction assist for a catheter with excellent reliability that can discharge saliva, sputum and the like sucked in communication with the catheter by having a passage portion that penetrates the inside of the mounting portion, the tubular portion, and the suction portion. Tools can be provided.

According to invention of Claim 2, in addition to the effect of Claim 1, it has the following effects.
(1) Since the suction part is formed in any one of a substantially hemispherical shape, a substantially spherical shape, and a substantially elliptical spherical shape, it is easy to get caught in the teeth, the oral cavity, the bronchus, etc. It is possible to provide a suction assisting device for a catheter excellent in usability that can be taken in and out.

According to invention of Claim 3, in addition to the effect of Claim 1 or 2, it has the following effects.
(1) Since it has a protrusion formed on the outer side surface of the rear part of the mounting part, it can be easily removed without grasping the protrusion by grasping the protrusion, so that the catheter suction can be easily removed. Auxiliary tools can be provided.
(2) When inserting the attachment part into the catheter, the protruding part serves as a stopper to prevent the attachment part from being inserted deeper than necessary, and it can be easily detached and hygienic without the catheter entering the oral cavity. It is possible to provide a catheter suction assisting tool excellent in the above.

According to invention of Claim 4, in addition to the effect of any one of Claims 1 thru | or 3, it has the following effects.
(1) Since the suction adjustment hole is provided, the suction force can be adjusted. When saliva or sputum is not sucked, air is sucked by opening the suction adjustment hole and the suction force is reduced. There is no risk of damaging the body, and when suctioning saliva or sputum, the suction adjustment tool for catheters with excellent practicality can be provided by increasing the suction force by closing the suction adjustment hole with a finger etc. can do.

According to invention of Claim 5, in addition to the effect of any one of Claims 1 thru | or 4, it has the following effects.
(1) Since the suction part is provided with at least one or more suction assist holes, a suction range is widened, the suction efficiency is improved, and a catheter suction assisting tool excellent in workability can be provided.
(2) When a plurality of suction auxiliary holes are formed, even if some of the suction auxiliary holes are clogged with saliva or sputum, etc. A suction aid can be provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
FIG. 1 (a) is an overall perspective view showing a catheter suction assisting tool in Embodiment 1 of the present invention, and FIG. 1 (b) is a diagram illustrating the catheter suction assisting tool in Embodiment 1 of the present invention. It is a cross-sectional front view which shows a mounting state.
In FIG. 1, reference numeral 1 denotes a catheter suction assisting device according to the first embodiment of the present invention, 1 ′ is a tubular portion, 2 is formed at the end of the tubular portion 1 ′, and is inserted into a through hole 6 of the catheter 5 to be attached and detached. A mounting portion of the catheter suction assisting tool 1 that is freely mounted, 3 is a suction portion of the catheter suction assisting tool 1 formed in a substantially spherical shape at the other end of the tubular portion 1 ′, and 4 is a mounting portion 2 and a tubular portion. 1 ′ is a passage portion of the catheter suction assisting tool 1 that penetrates the inside of the suction portion 3 and communicates with the through hole 6 of the catheter 5.

The catheter suction assisting tool 1 was integrally formed of a synthetic resin such as polypropylene, polyethylene, soft rubber, EPDM, polyurethane, nylon, or acrylic resin. Thereby, it is excellent in terms of workability, low cost, and corrosion resistance, is excellent in cleanability and boiling resistance, and there is a possibility that the catheter 5 may be damaged when the attachment portion 2 is attached to the through hole 6 of the catheter 5. Since there are few, it is excellent in reliability. Moreover, since there is little possibility of damaging a mucous membrane etc. when inserting and sucking the suction part 3 in an intraoral cavity or a bronchus, it is excellent in safety.
The catheter suction assisting tool 1 or the tubular portion 1 ′ and the suction portion 3 may be made of metal such as titanium, aluminum alloy, stainless steel, etc., which are excellent in corrosion resistance and durability. In particular, those made of titanium are preferred because they are lightweight and have excellent biocompatibility. In addition, since there is a certain amount of stiffness, it is excellent in operability when inserted into the bronchus.

In the first embodiment, since the mounting portion 2, the tubular portion 1 ′, and the suction portion 3 are formed integrally, the productivity is excellent, but they may be formed separately. When formed separately, for example, the size of the suction part can be changed in accordance with the patient's physique and application, which is preferable in terms of practicality. When the outer diameter of the suction part 3 is formed to 3 mm to 6 mm, it can be used for children or inserted into the bronchus for excellent versatility. As the outer diameter of the suction part 3 becomes smaller than 3 mm, the formation of the passage part 4 becomes difficult and the amount of suction tends to decrease, and as it becomes larger than 6 mm, it becomes difficult to penetrate into the bronchus. It turns out that there is a tendency to become.
In the first embodiment, the mounting portion 2 is inserted into the through hole 6 and mounted, but the catheter 5 may be inserted into the passage portion 4 formed in the mounting portion 2 and mounted. In this case, the catheter 5 can be inserted into the passage portion 4 and attached by forming the inner diameter of at least the end of the passage portion 4 on the side of the catheter 5 to be approximately equal to or slightly smaller than the outer diameter of the catheter 5. There is little risk of detachment and excellent reliability. Further, when the diameter of at least the end of the passage portion 4 on the suction portion 3 side is increased from the mounting portion 2 side toward the suction portion 3 side, the range in which suction can be performed is widened, which is preferable in terms of practicality.

  In the first embodiment, the length of the tubular portion 1 ′ is formed such that the end of the catheter 5 does not enter the oral cavity when the catheter 5 is attached to the catheter 5, but the present invention is not limited to this. Even if it enters the oral cavity, the suction operation can be performed safely. When the length of the tubular portion 1 ′ is 20 cm to 30 cm, the suction portion 3 can be inserted into the bronchus to perform a suction operation. As the length of the tubular portion 1 ′ becomes shorter than 20 cm, it enters the oral cavity up to the end of the catheter 5, and it is difficult to grasp the tubular portion 1 ′ and the mounting portion 2 and to penetrate the suction portion 3 into the bronchus. Therefore, it was found that hygiene and operability tend to be lowered, and that the handling tends to become difficult as the length becomes longer than 30 cm.

The method for using the catheter suction assisting tool according to the first embodiment configured as described above will be described below with reference to the drawings.
First, the attachment part 2 of the catheter suction assisting tool 1 is inserted into the through-hole 6 from the other end of the catheter 5 connected at one end to a removal device (suction method using a vacuum pump or the like) such as a fist not shown. To do. Next, the suction part 3 of the catheter suction assisting tool 1 is placed in the patient's oral cavity or inserted into the bronchus, but the suction part 3 is formed in a substantially spherical shape so Suction work can be performed safely without being damaged.
At this time, since the length of the tubular portion 1 ′ is formed such that the end of the catheter 5 does not enter the oral cavity, it is possible to prevent the patient's saliva, wrinkles, etc. from adhering to the surface of the catheter 5. It is possible to clean only the catheter suction assisting tool 1 and repeatedly use it, or to make the catheter suction assisting tool 1 disposable, so that it is excellent in hygiene and maintainability, and the troublesome cleaning of the catheter 5 is unnecessary. Excellent practicality. Further, since the suction operation can be performed by grasping the tubular portion 1 ′ and the mounting portion 2, the catheter suction assisting tool 1 can be prevented from being detached from the catheter 5, compared with the case where the suction operation is performed by grasping the easily deformable catheter 5. The operability is excellent, and the tip of the suction part 3 can be reliably applied to saliva, wrinkles, etc. in the oral cavity. Thereafter, by driving a removal device such as a sputum, saliva, wrinkles and the like in the oral cavity and bronchus are sucked up to the catheter 5 through the passage portion 4 of the catheter suction assisting tool 1.

As described above, since the catheter suction assisting tool in the first embodiment is configured, it has the following effects.
(1) The end portion of the mounting portion 2 can be easily attached to and detached from the through hole 6 of the catheter 5. Therefore, after the suction operation, the catheter suction assisting tool 1 can be removed and replaced or cleaned, so that hygiene and maintenance are excellent.
(2) Since the suction part 3 is formed in a substantially spherical shape, there is no corner that causes damage to the mucous membrane of the oral cavity and bronchi, etc. The mucous membrane etc. even if it is applied to the oral cavity or inserted into the bronchus Can be used safely and can improve suction workability.
(3) Since the suction part 3 is formed in a substantially spherical shape, it can be easily taken in and out without being caught in the teeth, the oral cavity, the bronchus, etc.
(4) Saliva, sputum and the like sucked in communication with the through hole 6 of the catheter 5 can be discharged from the catheter 5 by the passage portion 4 penetrating the inside of the tubular portion 1 ′.
(5) Since the outer diameter of the mounting portion 2 is formed with a slightly larger diameter than the through-hole 6, the through-hole 6 of the catheter 5 formed of a stretchable material such as vinyl chloride resin or rubber is formed in the mounting portion 2. The diameter is increased in accordance with the outer diameter, and the mounting portion 2 can be inserted and mounted.
(6) Since the length of the tubular portion 1 ′ is formed such that the end of the catheter 5 does not enter the oral cavity when attached to the catheter 5, the saliva, wrinkles, etc. of the patient on the surface of the catheter 5 Can be prevented, and only the catheter suction assisting tool 1 can be washed and used repeatedly, or the catheter suction assisting tool 1 can be made disposable, thereby providing excellent hygiene and maintainability and a troublesome catheter. No need for cleaning 5 and is highly practical.
(7) Because the suction operation can be performed by grasping the tubular portion 1 ′ or the mounting portion 2 of the catheter suction assisting tool 1, the operability and the suction workability are improved as compared with the case where the suction operation is performed by grasping the easily deformable catheter 5. In addition to being excellent, it is possible to prevent the catheter suction assisting tool 1 from being detached from the catheter 5, and it is excellent in reliability.
(8) Since the tip of the passage portion 4 on the suction portion 3 side is formed in a curved shape, it is excellent in safety without damaging the oral cavity or the mucous membrane of the bronchus, and smoothly sucks saliva and sputum along the curved surface. can do.

(Embodiment 2)
FIG. 2A is an overall perspective view showing the catheter suction assisting tool in the second embodiment, and FIG. 2B shows a mounting state of the catheter suction assisting tool in the second embodiment on the catheter. It is a cross-sectional front view.
In FIG. 2, the catheter suction assisting tool 1a according to the second embodiment is different from the catheter suction assisting tool 1 according to the first embodiment in that the mounting portion 2a is reduced in diameter toward the end on the catheter 5 side. A point having a guide portion 7 formed, a point having a ridge portion 8 formed in an annular shape on the outer peripheral surface of the mounting portion 2a, a point having a projection portion 9 formed in an annular shape on the outer periphery, and a tubular shape The portion 1 ′ has a suction adjustment hole 10 communicating with the passage portion 4 and opened on the surface of the tubular portion 1 ′, and the suction portion 3a is formed in a substantially oval shape.

In the second embodiment, the protrusions 8 are formed in an annular shape, but other continuous protrusions, randomly formed discontinuous protrusions, or spiral grooves may be used.
In the second embodiment, the protruding portion 9 is formed in an annular shape around the entire outer surface of the mounting portion 2a, but may be formed on a part of the outer surface.

As described above, since the catheter suction assisting tool in the second embodiment is configured, in addition to the functions of the first embodiment, the following actions are provided.
(1) Since the mounting portion 2a includes a guide portion 7 formed with a reduced diameter toward the end on the catheter 5 side, the mounting portion 2a can be easily inserted into the catheter 5 using the guide portion 7 as a guide. Can be installed.
(2) The mounting portion 2a can be firmly mounted so as not to be detached from the catheter 5 by the protrusions 8 formed on the outer peripheral surface of the mounting portion 2a.
(3) Since the protruding portion 9 formed on the outer side surface of the rear portion of the mounting portion 2a is provided, the catheter suction assisting tool 1a can be easily detached without slipping by grasping the protruding portion 9.
(4) When the mounting portion 2a is inserted into the catheter 5, the protruding portion 9 serves as a stopper to prevent the mounting portion from being inserted deeper than necessary and can be easily detached, and the catheter 5 enters the oral cavity. No hygienic properties.
(5) Since the suction adjustment hole 10 is provided, the suction adjustment hole 10 can be closed with a finger to adjust the suction force, and when saliva or sputum is not sucked, the suction adjustment hole 10 is opened to allow air to flow. The suction force is reduced and there is no risk of damaging the mucous membrane or the like by the suction force. When sucking saliva, sputum or the like, the suction adjustment hole 10 is closed with a finger or the like so that the suction force increases and the suction can be performed accurately. it can.

(Embodiment 3)
FIG. 3 is an overall perspective view showing the catheter suction assisting device in the third embodiment.
In FIG. 3, the catheter suction assisting tool 1b in the third embodiment is different from the catheter suction assisting tool 1a in the second embodiment in that the suction part 3b is formed in a rod shape and the tip is formed in a substantially hemispherical curved surface. It is a point.
In this embodiment, since the suction part 3b is formed in a rod shape, the tip of the suction part 3b can be easily inserted into the bronchus. At this time, since the tubular portion 1 ′ and the mounting portion 2a can be grasped to perform a suction operation, the end portion of the catheter 5 can be prevented from entering the oral cavity as in the first and second embodiments, and the operability, Excellent suction workability.

As described above, since the catheter suction assisting tool according to the third embodiment is configured, in addition to the actions of the first or second embodiment, the following actions are provided.
(1) Since the suction part 3b is formed in a rod shape, the processing is easy and the productivity is excellent.
(2) The patient can easily hold the suction part 3b, is less likely to hit the teeth, is excellent in safety, can be easily moved in the oral cavity or bronchi, and can improve the suction workability.

(Embodiment 4)
FIG. 4A is an overall perspective view showing the catheter suction assisting tool in the fourth embodiment, and FIG. 4B is a cross-sectional front view showing a mounting state of the catheter suction assisting tool in the fourth embodiment on the catheter. FIG. 4 and FIG. 4C are right side views of the catheter suction assistance tool in the fourth embodiment.
In FIG. 4, the catheter suction assisting tool 1c according to the fourth embodiment is different from the catheter suction assisting tool 1 according to the first embodiment in that the suction part 3c communicates with the passage part 4 on the surface of the suction part 3c. The suction assisting hole 11 is opened.
The number of the auxiliary suction holes 10 is preferably 1 to 8, and in the fourth embodiment, eight auxiliary suction holes 10 are formed. This is because as the number of the auxiliary suction holes 10 exceeds 8, the structure of the suction part 3c becomes complicated, the productivity is lacking, and the strength tends to be insufficient. Further, since the suction auxiliary hole 11 is formed in the tip half of the suction side of the suction part 3c, the suction auxiliary hole 11 reaches a deep part in the oral cavity or bronchus, and is easy to apply to sputum or saliva. Excellent in properties.
As described above, since the catheter suction assisting tool in the fourth embodiment is configured, in addition to the action described in any one of the first to third embodiments, the following action is provided.
(1) Since the suction part 3c includes the suction auxiliary hole 11, the range in which suction can be performed is widened, and the suction efficiency can be improved.
(2) Since eight suction auxiliary holes 11 are formed, even if some of the suction auxiliary holes 11 are clogged with saliva, sputum or the like, they can be sucked with other suction auxiliary holes 11 to improve workability. Can do.

  The present invention relates to a suction assisting device for a catheter that is detachably attached to the distal end of a catheter, has no risk of damaging the mucous membrane of the oral cavity and bronchi, etc. Detachable, easy to replace and clean, excellent hygiene and maintenance, easy to remove when worn, easy to put in and out of the oral cavity and bronchi, easy to operate, practical use without reducing catheter suction Therefore, it is possible to provide a catheter suction assisting device having excellent reliability, and it can be suitably used for treatment in dentistry or internal medicine.

(A) Whole perspective view showing catheter suction assisting tool in Embodiment 1 (b) Cross-sectional front view showing a mounting state of the catheter suction assisting tool in Embodiment 1 on the catheter (A) Whole perspective view showing catheter suction assisting tool in Embodiment 2 (b) Cross-sectional front view showing a mounting state of the catheter suction assisting tool in Embodiment 2 on the catheter Whole perspective view which shows the suction assistance tool for catheters in Embodiment 3 (A) Whole perspective view showing the catheter suction assisting tool in the fourth embodiment (b) Cross-sectional front view showing the attachment state of the catheter suction assisting tool in the fourth embodiment to the catheter (c) In the fourth embodiment Right side view showing the catheter suction aid

Explanation of symbols

1, 1a, 1b, 1c Aspiration aid for catheter 1 'Tubular part 2, 2a Attachment part 3, 3a, 3b, 3c Suction part 4 Passage part 5 Catheter 6 Through hole 7 Guide part 8 Projection part 9 Projection part 10 Suction Adjustment hole 11 Suction auxiliary hole

Claims (5)

  A mounting portion that is formed at the end of the tubular portion and is detachably attached to the distal end of the catheter; a suction portion having a curved tip at the other end of the tubular portion; and the mounting portion and the tubular portion And a passage portion penetrating the inside of the suction portion.   The catheter suction assisting device according to claim 1, wherein the suction part is formed in any one of a substantially hemispherical shape, a substantially spherical shape, and a substantially elliptical spherical shape.   The catheter suction assisting device according to claim 1, further comprising a protrusion formed on an outer side surface of a rear portion of the mounting portion.   The suction assisting device for a catheter according to any one of claims 1 to 3, wherein the tubular portion includes a suction adjusting hole that communicates with the passage portion and opens on a surface of the tubular portion. . The catheter according to any one of claims 1 to 4, wherein the suction part includes at least one suction auxiliary hole that communicates with the passage part and opens on a surface of the suction part. Suction aid.

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