JP2010179029A - Protector for nasal cavity - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protector for a nasal cavity which copes with various outside diameters of medical instrument and an inside diameter of a naris, and removing only the protector while being inserted. <P>SOLUTION: The protector is inserted into a naris to be used when penetrating the linear or tubular medical instrument from the naris into a nasal cavity. The protector includes: a substantially tubular insert portion 6, the whole of which is formed of flexible material, and which is formed with a slit 5 formed from the base end to the front end in the extending direction and having a C-shaped cross-section; and a flange portion 7 formed at the base end of the insert portion 6 and having a larger outside diameter than the insert portion 6. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a nasal cavity protector for protecting a nasal cavity when a medical instrument such as an endoscope cable or a medical catheter is inserted from an outer nostril.

  In recent years, when examining the digestive organs with an endoscope, oral endoscopy in which a scope is inserted from the mouth causes the pharyngeal reflex to occur and cause nausea because the scope contacts the tongue base at the back of the throat. In many cases, transnasal endoscopy in which a scope is inserted from the outer nostril is often employed. In this transnasal endoscopy, since no pharyngeal reflex occurs and almost no nausea occurs, the burden on the patient is small and it is possible to talk with an operator such as a doctor during the examination.

  In addition, as other medical instruments that are inserted into the nasal cavity from the outer nostril and introduced into the digestive organ, medical catheters such as a nutritional catheter for feeding fluid nutrients to the digestive organ are generally used.

  When a linear or tubular medical device is inserted into the nasal cavity from the nostril as described above, the tip or middle part of the medical device is placed on the inner wall of the nasal cavity when the medical device is inserted into or removed from the nasal cavity. There was an inconvenience that the patient suffered from contact and rubbing.

  Therefore, conventionally, for example, Patent Document 1 is a protective device used when a medical device is introduced into the digestive organs nasally, and includes a tubular portion that is held in a state inserted into the outer nostril. Nasal protectors have been proposed. In this nasal cavity protector, the medical device is difficult to hit the peripheral edge of the outer nostril or the inner wall of the nasal cavity by introducing the medical device through the tubular portion into the digestive organ while the tubular portion is inserted into the outer nostril. It becomes possible to reduce damage.

JP 2008-178654 A (Claims, FIG. 1)

However, the following problems remain in the above-described conventional technology.
That is, in the conventional nasal cavity protector, since the inner diameter of the tubular portion is determined, it is necessary to prepare a plurality of kinds of protectors having different inner diameter sizes, and an endoscope scope (cable) inserted through the protector It was necessary to select and use one that matches the thickness of the catheter. Also, since the inner diameter of the outer nostril is not constant depending on the patient, it is necessary to prepare a plurality of types of protective equipment with different outer diameter sizes, and select and use one corresponding to the patient's outer nostril. There was a need. Therefore, it is necessary to prepare protective devices of many sizes in advance, and it is troublesome because it is necessary to select a size corresponding to the outer diameter of the medical device to be inserted and the inner diameter of the outer nostril for each inspection. was there.
Furthermore, insertion and extraction must be performed with the endoscope scope (cable) and catheter inserted through the tubular portion, and there is a disadvantage that it is not possible to detach only the protective equipment during insertion.

  The present invention has been made in view of the above-described problems, and provides a nasal cavity protector that can handle various outer diameters of medical devices and inner diameters of outer nostrils, and that can be attached and detached only during the insertion. The purpose is to provide.

  The present invention employs the following configuration in order to solve the above problems. That is, the nasal cavity protector of the present invention is a protector that is used by inserting a linear or tubular medical device into the nasal cavity when the medical instrument is inserted from the nasal cavity into the nasal cavity, and is formed entirely of a flexible material. A substantially tubular insertion portion having a C-shaped cross section formed in the extending direction from the proximal end to the distal end, and a larger outer diameter than the insertion portion formed at the proximal end of the insertion portion. And a flange portion.

  In this nasal cavity protector, the entire tubular portion is formed of a flexible material, and a slit is formed in the extending direction from the proximal end to the distal end to have a C-shaped cross section, and the proximal end of the insertion portion And a flange portion having an outer diameter larger than that of the insertion portion. When a linear or tubular medical device is inserted through the insertion portion, the slit expands according to the outer diameter of the medical device. By changing the inner diameter of the insertion portion, it can be easily attached to medical instruments of various sizes. Further, since the slit is narrowed according to the inner diameter of the outer nostril to be inserted and the outer diameter of the insertion portion is changed, it is possible to deal with outer nostrils of various sizes. Furthermore, in addition to inserting the medical device from the proximal end of the insertion portion, it is possible to attach or remove the nasal cavity protector by fitting into the medical device through the slit, and it can be easily detached from the medical device even during insertion. it can.

The nasal cavity protector according to the present invention is characterized in that at least one of the slit side and the opposite side of the slit of the flange portion is cut out.
That is, in the nasal cavity protector, since at least one of the slit side of the flange portion and the opposite side of the slit is cut out, the notched portion of the flange portion is directed toward the upper lip side or the nasal head side when inserting the medical device. As a result, the flange portion can be fitted and a good wearing feeling can be obtained, and the rotation of the protective equipment can be suppressed and stable wearing can be achieved. Note that it is preferable that both the slit side and the opposite side of the slit of the flange portion are notched from the viewpoint of better mounting feeling and stable mounting.

Furthermore, the nasal cavity protector of the present invention is characterized in that the slit side of the flange portion is a V-shaped cutout portion that gradually expands outward in the radial direction.
That is, in the nasal cavity protector, the slit side of the flange portion is a V-shaped notch that gradually spreads outward in the radial direction, so that the V-shaped notch is placed on the upper lip side when a medical device is inserted. By directing, the flange portion can be further fitted and a good wearing feeling can be obtained, and the rotation of the protective device can be further suppressed to enable stable wearing.

The nasal cavity protector according to the present invention is characterized in that the proximal end side of the insertion portion is a proximal end tapered portion whose outer diameter is gradually increased toward the flange portion.
That is, in this nasal cavity protector, since the proximal end side of the insertion portion is a proximal end tapered portion whose outer diameter is gradually increased toward the flange portion, the proximal end tapered portion has various inner diameters and shapes. It fits into the outer nostril of the lip and becomes difficult to drop off, making it possible to mount stably.

Moreover, the nasal cavity protector of the present invention is characterized in that it is entirely formed of a silicone resin.
That is, since this nasal cavity protector is entirely made of silicone resin, it can be easily deformed by a soft and flexible material, and a good wearing feeling can be obtained.

The present invention has the following effects.
According to the nasal cavity protector of the present invention, a generally tubular insertion portion that is formed entirely of a flexible material and has a slit formed in the extending direction from the proximal end to the distal end to have a C-shaped cross section, and the insertion Since it is composed of a flange part formed at the base end of the part and having a larger outer diameter than the insertion part, it can accommodate the outer diameter of various medical instruments and the inner diameter of the outer nostril and protects even during insertion Only tools can be attached and detached. Therefore, if this nasal cavity protector is used, it is possible to suppress the patient's pain as much as possible, to perform transnasal endoscopy, or to supply nutrients to the digestive tract through the feeding catheter through the nasal cavity. In addition to being possible, handling by an operator who performs an inspection or the like becomes easy.

It is a perspective view which shows one Embodiment of the nasal cavity protector which concerns on this invention. In this embodiment, it is the top view and front view which show a nasal cavity protector. In this embodiment, it is explanatory drawing which shows the state which mounted | wore the nasal cavity protector. In this embodiment, it is explanatory drawing which shows the mounting state of the nasal cavity protector at the time of inserting and extracting a cable.

  Hereinafter, an embodiment of a nasal cavity protector according to the present invention will be described with reference to FIGS.

  As shown in FIGS. 1 to 3, the nasal cavity protector 1 according to the present embodiment is used by inserting a linear or tubular medical device 2 into the nasal cavity 3 when the medical instrument 2 is inserted from the nasal cavity 3 into the nasal cavity 4. A substantially tubular insertion portion 6 which is a protective device and is formed entirely of a flexible material and has a slit 5 formed in the extending direction from the proximal end to the distal end to have a C-shaped cross section, and the insertion portion 6 And a flange portion 7 that is formed at the base end and has an outer diameter larger than that of the insertion portion 6.

The medical instrument 2 is, for example, a transnasal endoscope cable or a medical catheter that is inserted into the digestive organ or the like from the nostril 3 through the nasal cavity 4.
The flange portion 7 has a notch on the slit 5 side and the opposite side of the slit 5, and the slit 5 side of the flange portion 7 is a V-shaped notch portion 7a that gradually spreads outward in the radial direction. In addition, the opposite side of the V-shaped cutout portion 7a of the flange portion 7 is a flat cutout portion 7b cut out perpendicular to the radial direction.

The V-shaped cutout portion 7 a extends outward in the radial direction at an angle of 120 ° from the central axis of the insertion portion 6.
A guide taper portion 7d whose opening diameter gradually increases toward the base end surface is formed in the insertion port 7c provided at the base end of the insertion portion 6 and in the center of the flange portion 7.
The nasal cavity protector 1 is entirely formed of a rubber-like silicone resin (silicone rubber) and has a hardness of about 15 to 20 °. In addition, as materials other than silicone rubber, it is preferable to employ soft materials suitable for medical use such as natural rubber.

The insertion portion 6 is a proximal-side tapered portion 6a whose proximal end is gradually increased in outer diameter toward the flange portion 7. Further, the distal end portion of the insertion portion 6 is formed with a tapered end portion taper portion 6b that is gradually tapered toward the distal end.
The maximum outer diameter of the flange portion 7 is, for example, 25 mm and the thickness is 5 mm. The length of the insertion portion 6 is, for example, 45 mm to 60 mm, the inner diameter is φ8 mm, and the outer diameter is φ10 mm.

  Next, a method for mounting the nasal cavity protector 1 when the medical instrument 2 such as a nasal endoscope cable or the like is inserted into the outer nostril 3 using the nasal cavity protector 1 will be described with reference to FIG.

  First, the nasal cavity protector 1 is inserted into the outer nostril 3 from the tip until the flange portion 7 comes into contact with the peripheral edge of the outer nostril 3. At this time, as shown in FIG. 4A, the slit 5 and the V-shaped notch 7a are directed toward the upper lip 9 (opposite the nose tip 8) and the flat notch 7b is directed to the nose tip 8 side. Turn to. In addition, you may rotate the nasal cavity protector 1 after insertion, and may set the direction of the slit 5 and the V-shaped notch part 7a. Even in this case, since the whole is made of a soft silicone resin, it flexes flexibly and rotates and deforms along the shapes of the outer nostril 3 and the nasal cavity 4.

  With the nasal cavity protector 1 inserted in this manner, the medical instrument 2 is inserted from the insertion port 7c of the flange portion 7 and is inserted through the insertion portion 6 from the nasal cavity 4 to the digestive organ. At this time, since the guide taper portion 7d is formed in the insertion port 7c, the distal end of the medical instrument 2 can be smoothly inserted. In addition, when inserting the medical instrument 2, the tip or middle part of the medical instrument 2 has conventionally been easy to come into contact with the inner wall of the nasal cavity 4. There is no pain to the patient. In particular, the tip or middle part of the medical device 2 is conventionally pushed when inserted and easily abuts or rubs against the middle turbinate side. In this embodiment, the slit 5 of the insertion portion 6 is placed on the lower turbinate side. By directing the portion without the slit 5 toward the middle turbinate side of the nasal cavity 4, this portion can be reliably protected.

  In addition, when the medical instrument 2 is directly inserted into the outer nostril 3 without performing the nasal cavity protector 1 and an inspection or the like is performed, the medical instrument 2 is inserted when the medical instrument 2 is inserted or when the patient complains of pain during the insertion. In this state, the nasal cavity protector 1 can be retrofitted by fitting the medical device 2 through the slit 5. That is, it is not necessary to remove the medical device 2 once and then reinsert it into the outer nostril 3 after wearing the protective device.

  Next, when the medical device 2 is extracted through the nasal cavity 4 and the outer nostril 3 after the inspection or the like, as shown in FIG. 4B, the inserted nasal cavity protector 1 is rotated to form a slit 5 and a V-shape. On the contrary, the cutout portion 7a is directed toward the nose tip 8, and the flat cutout portion 7b is directed toward the upper lip 9 side. In this state, the medical instrument 2 is extracted. At this time, the middle part of the medical instrument 2 is pulled and easily rubbed to the lower turbinate side, but the slit 5 of the insertion portion 6 faces the middle turbinate side. This part can be reliably protected by directing the part without the head toward the lower turbinate side. Thus, the turbinate stimulation at the time of taking out the medical instrument 2 can be relieved.

  As described above, in the nasal cavity protector 1 according to the present embodiment, the substantially tubular insertion portion 6 that is formed entirely of a flexible material, has a slit 5 formed from the proximal end to the distal end, and has a C-shaped cross section, Since the flange portion 7 is formed at the proximal end of the insertion portion 6 and has an outer diameter larger than that of the insertion portion 6, when inserting the linear or tubular medical instrument 2 into the insertion portion 6, medical treatment is performed. The slit 5 expands according to the outer diameter of the instrument 2 and the inner diameter of the insertion portion 6 changes, so that the instrument 2 can be easily attached to the medical instrument 2 of various sizes.

  Moreover, since the slit 5 narrows and the outer diameter of the insertion part 6 changes according to the inner diameter of the outer nostril 3 to be inserted, the outer nostrils 3 of various sizes can be handled. Furthermore, in addition to inserting the medical device 2 from the proximal end of the insertion portion 6, the medical device 2 can be fitted into or removed from the slit 5 and the nasal cavity protector 1 can be attached or removed. 2 can be attached and detached.

Furthermore, since the slit 5 side of the flange portion 7 and the opposite side of the slit 5 are notched, by directing the notched portion of the flange portion 7 toward the upper lip 9 side or the nose tip 8 side when the medical device 2 is inserted, The flange portion 7 can be fitted to obtain a good wearing feeling, and the wearing of the protective device can be suppressed and stable wearing can be achieved.
In particular, since the slit 5 side of the flange portion 7 is a V-shaped cutout portion 7a that gradually spreads outward in the radial direction, the V-shaped cutout portion 7a is placed on the upper lip 9 side when the medical instrument 2 is inserted. The flange portion 7 can be further fitted to obtain a good wearing feeling, and the wearing of the protector can be further suppressed and stable wearing can be achieved.

Further, since the proximal end side of the insertion portion 6 is a proximal end side tapered portion 6a whose outer diameter is gradually increased toward the flange portion 7, the proximal end side tapered portion 6a has various inner diameters and shapes. It fits in the nostril 3 and does not easily fall off, and can be mounted stably. In addition, since the tapered front end side taper portion 6b is formed at the distal end portion of the insertion portion 6, the distal end can be inserted smoothly.
Further, since the whole is formed of a silicone resin, it can be easily deformed by a soft and flexible material, and a good wearing feeling can be obtained.

  In addition, this invention is not limited to the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.

  DESCRIPTION OF SYMBOLS 1 ... Nasal cavity protector, 2 ... Medical instrument, 3 ... Outer nostril, 4 ... Nasal cavity, 5 ... Slit, 6 ... Insertion part, 6a ... Base end side taper part, 7 ... Flange part, 7a ... V-shaped notch part

Claims (5)

A protective device that is used by inserting a linear or tubular medical device into the nasal passage when the medical device is inserted from the nasal passage into the nasal cavity,
Formed entirely of flexible material,
A substantially tubular insertion portion in which a slit is formed in the extending direction from the proximal end to the distal end and has a C-shaped cross section;
A nasal cavity protector comprising a flange portion formed at a proximal end of the insertion portion and having an outer diameter larger than that of the insertion portion. The nasal cavity protector according to claim 1,
At least one of the slit side and the opposite side of the slit of the flange portion is cut out. The nasal cavity protector according to claim 2,
The nasal cavity protector according to claim 1, wherein the slit side of the flange portion is a V-shaped cutout portion gradually expanding outward in the radial direction. The nasal cavity protector according to any one of claims 1 to 3,
A nasal cavity protector characterized in that a proximal end side of the insertion portion is a proximal end tapered portion whose outer diameter is gradually increased toward the flange portion. The nasal cavity protector according to any one of claims 1 to 4,
A nasal cavity protector characterized by being entirely made of silicone resin.

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