JP2001000469A - Intubator ingredient for reconstruction of lacrimal passage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intubator ingredient that permits easy intubation into a lacrimal passage and stay stable there, which avoids possibility of laceration in the lacrimal point and lacrimal duct when left. SOLUTION: This ingredient comprises two end members (42A and 42B) and two connecting members connecting the two end members (42A and 42B). It has a cut for insertion of a specillum. The end members (42A and 42B) are formed with a pipe shaped material having blind ends. Both sides of the connecting members are more flexible than its middle part and the end members (42A and 42B), and have an outer diameter smaller than that of the end members (42A and 42B).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intubation device for lacrimal canal reconstruction.

[0002]

2. Description of the Related Art Intubation is an effective treatment for reconstructing the lacrimal tract. However, the conventional silicone tube indwelling method represented by the Crawford method has not been widely used in Japan as compared with the nunchaku type silicone tube. This is because the silicone tube placed in the lacrimal passage was not sufficiently stable.

[0003] Conventional silicone tubes are made of, for example, silicone rubber, but have insufficient flexibility.
Therefore, even if the central part is lifted with tweezers,
It did not break easily into the shape of a letter. This elasticity contributed to instability in the lacrimal passage.

In the Crawford method, the tip of the tube is tied in the nasal cavity, and a knot larger than the size of the opening at the lower end of the nasolacrimal duct is formed and left as it is.
However, it is difficult to confirm the size of the opening at the lower end of the nasolacrimal duct. Further, when the knot is smaller than the opening at the lower end of the nasolacrimal duct, there is also a problem that the knot moves upward and enters the lacrimal sac. Because of the very small diameter of the lacrimal canaliculus, it was very difficult to remove the knot once it had entered the lacrimal sac.

Therefore, the present inventor has proposed a tube having a total length of 80 to 130 mm and a thin and flexible 20 to 40 mm in the center as shown in FIG. This tube is thin and flexible at the center, and thick and hard on both sides. When the tube is supported at the center as shown in FIG. 2, the tube is easily bent into an inverted U-shape by gravity. Therefore, this tube is much more stable than the conventional silicone tube, and it is very rare that the tube comes out.

Further, since this tube has a blind end at both ends and has a cut for inserting the probe, it can be easily inserted into the lacrimal canal. Further, there is an advantage that removal can be easily performed.

The present inventors have applied this tube to more than 100 cases of lacrimal canal obstruction, but it has been confirmed that stability and escape from the lacrimal canal are rare.

[0008]

Generally, however, both ends of the tube are pulled toward the nasal cavity by the action of the lacrimal passage. For this reason, as shown in FIG. 3, the thin and flexible portion 40 at the center of the tube may cut into the punctum or lacrimal canaliculus, causing tear 19 in the punctum or lacrimal canaliculus.
Tearing tended to occur more easily as the tube center became thinner and harder. When the tension from both sides is large, the center of the tube becomes thinner and the tear 1
9 was likely to occur.

In view of the above-mentioned problems of the prior art, the present invention has good stability in the lacrimal canal, is easy to insert into the lacrimal canal, and may cause tears in the lacrimal punctum or lacrimal canaliculus after indwelling. It is an object of the present invention to provide an intubation device for lacrimal canal reconstruction without any intubation.

[0010]

A solution of the present invention is an intubation device for lacrimal canal reconstruction according to claims 1 to 25.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the intubation device for reconstructing lacrimal canal according to the present invention will be described below with reference to the drawings.

FIGS. 4, 5 and 6 show three embodiments of the intubation device for lacrimal canal reconstruction according to the present invention (hereinafter simply referred to as intubation device).
It is a perspective view which shows the external shape of.

In the three embodiments shown in FIGS. 4 to 6, the intubation device includes two end members 42 arranged on both sides and connecting members 40 and 24 connecting the two end members 42. The connecting member includes a central portion 24 and side portions 40 located on both sides of the central portion 24. The both side portions 40 are formed of a soft silicone rubber tube or rod. The central portion 24 of the connecting member is formed of a hard silicone rubber tube or rod.

In the examples shown in FIGS. 4 to 6, the end member 42 is also formed of a silicone rubber pipe material.

The end portion 53 (about 1 to 2 mm) of the end member 42 is a blind end. In addition, a small cut 49 for inserting the probe is formed in the other end of the end member 42. The cut 49 is formed parallel to the axial direction. Insert the son from the slit 49 to the blind end,
The intubation device is placed in the lacrimal passage using the son.

In the three embodiments shown in FIGS. 4-6, the connecting members 40, 24 are 0.4-0.6 mm
It has a small diameter. Further, both side portions 40 of the connecting member are more flexible than the center portion 24 and the end member 42 of the connecting member.

In the embodiment shown in FIG. 4, the angle formed by the axis of the central portion 24 and the side portions 40 of the connecting member is 180 °.

As shown in the embodiment of FIG. 5, the angle r between the central portion 24 of the connecting member and the side portions 40 is 80 to 180 °.
It may be.

In the embodiment shown in FIG. 6, the angle r is set to 90 °.
Is hard and short, so it is difficult to bend, and the force applied to the punctum is reduced accordingly, so that the complication of tearing the punctum and lacrimal canaliculus shown in FIG. 3 is less likely to occur.

As the material of the intubation device, appropriate flexibility and strength are desired. In terms of strength, it is necessary to have a strength that can withstand the tensile force applied during the indwelling operation in the lacrimal canal, the tensile force acting after the indwelling operation, the tensile force at the time of removal, and the like. On the other hand, in terms of flexibility, it is necessary to be flexible enough to perform the placement operation smoothly and to obtain stability in the lacrimal passage after placement.

In addition to such conditions of tensile strength and flexibility, it is also important that they are harmless to the human body. From such a viewpoint, silicone rubber is suitable as a material suitable for the intubation device. As in an example described later, only the surface layer can be formed of silicone rubber. In general, silicone rubber tends to increase in strength such as tensile strength as hardness increases. The shorter and more rigid the silicone tube, the harder it bends.

The flexibility of the connecting member 50 and the end member 51 can be evaluated, for example, by the Shore hardness specified in JIS. Shore hardness is measured with a durometer (Durome)
ter), and the unit is Shore A (JIS)
It is. The higher the numerical value of the Shore hardness, the higher the hardness.

The hardness (flexibility) of the side portions 40, the center portion 24, and the end members 42 of the connecting member will be described.

The both sides 40 of the connecting member have a Shore hardness of 2
0 to 60 (Shore A (JIS)), preferably 30 to 50 (Shore A), most preferably 38 to
42 (shore A). On the other hand, the center part 24 and the end member 42 of the connecting member have a Shore hardness of 50.
~ 80 {short A (JIS)}, preferably 60-80 (short A), and most preferably 70-8.
It can be set to a range of 0 (store A).

Next, the length of the intubation device and each member will be described.

The total length of the intubation device is generally 50 to 130 m
m, preferably 90-125 mm, optimally 1
It can be set in the range of 05 to 115 mm. Connecting portion 40,
24 has a length of 15 to 30 mm, preferably 2 to 30 mm.
It can be set in the range of 0 to 30 mm, optimally 20 to 28 mm.

As shown in FIG. 10, both side portions 40 of the connecting portion are provided.
Is 7 to 13 mm in length, and the length of the central part 24 is 4 to 8 m
m.

FIG. 11 shows a typical example of this, and has a step g1 inside the end members 42A and 42B.

FIG. 12 also shows a typical example, but has a partition wall W1 inside the end members 42A and 42B. The length of the end member 42 is 10 to 60 mm, but can be preferably set to a range of 25 to 50 mm, and optimally to a range of 30 to 45 mm.

Next, the outer diameter, inner diameter, and thickness of each member will be described. The outer diameter, inner diameter, and wall thickness of both side portions 40 and the central portion 24 of the connection portion are 0.2 to 0.7 mm and 0 to 0.3 m, respectively.
m, 0.1 to 0.25 mm, preferably 0.3 to 0.6 mm, 0 to 0.25 mm, 0.1 to 0.
2mm, optimally 0.4-0.5mm, 0-0.2 respectively
mm, in the range of 0.15 to 0.18 mm. The outer diameter of the connecting portions 40 and 24 is 0.2 to 0.7 mm, but may be a rod without a lumen. An inner diameter of 0 mm means a rod. The reason why the central portion 24 of the connecting member is made harder than the both side portions 40 is that if the central portion 24 of the connecting member is softened, tears of the punctum or the canaliculus tend to occur.

On the other hand, the outer diameter, the inner diameter, and the thickness of the end member 42 are
0.6-1.3 mm, 0.2-0.7 mm, 0.1 respectively
5 to 0.3 mm, preferably 0.7 to 1.
2mm, 0.3-0.6mm, 0.18-0.28m
m, optimally 0.9 to 1.1 mm and 0.35 to 0.1 mm, respectively.
55 mm, it can be set in the range of 0.2 to 0.25 mm.

As shown in FIGS. 7, 8, 11 to 13, those in which the end members are formed of tubes 42A and 42B having different outer diameters are also excellent. The outer diameter of the front portion 42A of the end member is 0.1 mm larger than the outer diameter of the rear portion 42B connected to it.
It is easy to insert because it is 1-0.3mm thin. The length of the front portion 42A of the end member is 7 to 20 mm, preferably 10 to 18 mm, and most preferably 10 to 15 mm. A smooth boundary portion 52 is formed between the front portion 42A and the rear portion 42B of the end member. The inside of the boundary 52 is shown in FIG.
And the partition wall W as shown in FIG.
1 makes it easier to push the end member into the lacrimal canal with the probe 61.

In the embodiment shown in FIG. 13, the connecting member has a vertical portion 22 disposed between the side portions 40 and the central portion 24. The length of the vertical portion 22 is suitably 1-2 mm,
The length of the central portion 24 is 4 to 6 mm, and the length of both side portions 40 is 7
１５15 mm is appropriate. Further, in the embodiment of FIG. 13, the partition members W1 are provided inside the end members 42A and 42B so that the end members can be easily pushed into the lacrimal canal by the probe.

In the embodiment shown in FIG. 14, the end member 45 is of a carrot type. FIG. 15 shows the size of the embodiment shown in FIG.
have.

In the embodiment of FIG. 16, the intubation device is
End members (42A, 42B) having a Shore hardness of 70 to 80 (Shore A) and connected thereto, a Shore hardness of 38 to 42 (Shore A), a length of 12 to 15 mm,
A connecting member (40) having an outer diameter of 0.3 to 0.5 mm and a shore hardness of 70 to 80 (sho) bonded to the other end of the connecting member.
re A) diameter 1.5 mm, thickness 0.1-0.2 mm
And a notch (49) for inserting the probe (61).

As shown in FIG. 17, the collar (23) may be fan-shaped.

As shown in FIGS. 18 and 19, as the end member, a carrot type (45) can be adopted in the embodiment shown in FIG. 16, or the end member (4) as shown in FIG.
2), the end members (42A, 42A) of the embodiment shown in FIG.
It can be adopted as an alternative to B).

The brim (23) has a Shore hardness of 70 to 80.
(Shore A) made of hard silicone rubber is desirable, and may be an elliptical shape having a short diameter of 1.5 mm and a long diameter of 2 mm or other shapes.

The effects of the present invention can be further increased by setting the hardness and the dimensional shape in the above-described ranges.

The manufacturing method of the embodiment shown in FIG. 4 will be described.

First, the side portions 40, the central portion 24, and the end members 42 of the connecting member having the dimensions and hardness described above are prepared. Then, one end of both sides 40 of the connecting member is connected to the end member 4.
Insert into the open end of No. 2 and adhere with silicone glue. It is desirable that the joining region between the both side portions 40 of the connecting member and the end member 42 be 2 mm or more, and a smooth boundary portion 51 be formed without forming a step. Further, both ends of the central portion 24 of the connecting member are bonded to the other ends of both sides of the connecting member with silicone glue.

Next, a cut of 1-2 mm is formed in the other end portion of the end member 42 along the longitudinal direction.

Further, a center mark 44 is provided at the center of the intubation instrument for convenient centering. Center mark 44
Thus, it can be confirmed whether the intubation device has been correctly inserted into the lacrimal canal. The indwelling may be performed so that the center mark 44 comes between the upper and lower punctum. Although not shown,
A mark is also provided at a portion 10 mm from the blind end 53. The mark is used as a guide when inserting the intubation device, and it is convenient to provide the mark in accordance with the length of the canaliculus, which is approximately 10 mm.

In the embodiment shown in FIG. 5, both side portions 40 of the connecting member are bonded to the center portion 24 of the connecting member so as to form an angle r of 80 ° to 180 °.

In the embodiment shown in FIGS. 6 to 12, the bonding is performed such that the angle r between the central portion 24 of the connecting member and both side portions 40 of the connecting member is 90 °.

In the embodiment shown in FIG. 6, the inside of the end member 42 is not shown, but as shown in FIGS.
It is better to add 1 or arrange the partition wall W1 as shown in FIG.

In the embodiments shown in FIGS. 6, 9 and 10, the outer diameter of the end member 42 is the same at the front part and the rear part, but as shown in FIGS. May be made 0.1 to 0.3 mm thinner than the rear part 42B.

In the embodiment shown in FIG.
And the vertical portion 22 and the central portion 24 may be made as one body. The partition W1 inside the end member 42 is
2 can be formed by making an incision in the axial direction, inserting a blunt injection needle from there, and injecting silicone glue. The thickness of the partition wall W1 is 1 to 2 mm. The height of the step g1 is about 1 mm.

The shape of the blind end 53 of the end member 42 is preferably concave toward the center. If it is convex, the tip of the probe 61 inserted into the end member 42 may break through the wall of the end member 42 that is in contact with the blind end 53.

FIG. 20 shows a conventional lacrimal canal reconstruction device (Monon
oKa). This conventional example is made of silicone rubber, and has a collar 23, a shaft 93 connected to the collar 23, and a distal end portion 9.
1 and a tube 92 connected to the distal end portion 91. The tube 92 is bonded to a conventional punctal plug. Therefore, similarly to the conventional punctal plug, the protruding portion 95 of the distal end portion 91 stimulates the cavity wall of the lacrimal canaliculus, causing the occurrence of granuloma. (For example, Fayet B et al .: “Bicanalicu
lar versus monocanalicular silicone intubation for
nasolacrimal duct impatency in children "Orbit Vo
FIG. 21 shows an embodiment of the present invention in which the tube 92 of the conventional lacrimal canal reconstruction device shown in FIG. 20 is improved. When the end member 42 and the tube 92 are used as shown in FIG. 21, the stability in the lacrimal passage is improved.

Further, the protruding portion 95 of the distal end portion shown in FIG. 21 is removed and rounded as shown in FIG. 22, and the shaft 93 and the distal end portion 91 in FIG. It is possible to place the tubule in the lacrimal passage for a long time without stimulating the cavity wall.

It is also excellent that the end member 42 shown in FIG. 21 is replaced with a front portion 42A and a rear portion 42B of the end member as shown in FIG.

The connecting member 40, that is, the thin tube or rod 40 becomes thinner and softer as the material becomes softer, so that the collar 23 does not bend and is correctly positioned at the punctum portion. When a hard material is used for the thin tube or the rod 40, a soft material is used at least about 5 mm from the collar 23 in order to prevent the collar 23 from caulking, or as shown in FIG. At least about 5mm from the collar 23
As shown in FIG. 25, it is made thinner toward the collar 23.

As shown in FIG. 26, the end members 42A, 42
B, that is, the thinner tube or rod 40 may gradually become thinner as it approaches the collar 23 from the thicker tube. The maximum diameter of the thinner tube is 0.5
0.7 mm and the minimum diameter is 0.3 to 0.4 mm.

As shown in FIG. 27, when the vertical portion 22 is connected to the horizontal portion 40 of a thin tube or rod made of a hard material, the vertical portion is connected to the horizontal portion 40 of a thin tube or rod made of a soft material. Even when the portions 22 are connected, it is preferable that the portion 47 in contact with the collar 23 gradually becomes thinner toward the collar 23.

As shown in FIG. 28, a portion 47 which comes into contact with a curved brim from a thinner tube or rod 40,
It may be made thinner as it approaches the collar.

FIG. 29 shows an example of a match stick-shaped silicone tube used for an intractable disease of lacrimal canaliculus obstruction.
In this example, there is an enlarged portion 26 at one end like a match stick (for example, see Katsuaki Kurihashi: Dakoriology, Medical Aoi Shuppan, Tokyo, 1998). Since such a tube has poor stability, it may be better to fix the enormous portion 26 at the inner corner of the eye with nylon or the like.

As shown in FIG. 30, the tube portion 42 of the match-shaped silicone tube is replaced with the thicker tube 42.
By making the tube or rod 40 thinner, the stability in the lacrimal passage is improved, and it is not necessary to fix the enormous portion 26 at the inner eye corner with a nylon or the like.

FIG. 31 shows a representative example of FIG.

FIG. 32 shows an example similar to the example of FIG. The two portions 42A and 42B of the end member 42 are separate members having different hardnesses and are integrated by an adhesive. For example, if the front portion 42A of the end member is made of a softer material than 42B, it becomes easier to pass through a raised portion or a curved portion in the lacrimal canal. The dimensions shown in FIG. 32 are preferred examples.

[0061]

According to the intubation device for reconstructing lacrimal canal of the present invention, when the outer diameter of the connecting members 40 and 24 is smaller than the outer diameter of the end member 42, the both side portions 40 of the connecting member become softer and the central portion of the connecting member. Since 24 is relatively hard, the risk of tearing of the punctum or lacrimal canaliculus after placement is very small.

Further, when the both side portions 40 of the connecting member are more flexible than the central portion 24 and the end member 42 of the connecting member, the stability in the lacrimal canal is high, and trouble after placement is very small. If the connecting member is thin, it does not touch the cornea.

Further, when the front portion 42A of the end member is made thinner than the rear portion 42B, it becomes easier to insert the end member into the lacrimal canal.

Further, the partition wall W1 and the step g
When 1 is arranged, the end member 42 can be accurately pushed into the lacrimal passage by the probe 61.

The present invention is not limited to the above embodiment. For example, a bump or other convex or concave shape may be provided inside the end member instead of the partition wall W1 or the step g1.

[Brief description of the drawings]

FIG. 1 is a diagram showing a conventional technique.

FIG. 2 is a diagram showing a conventional technique.

FIG. 3 is a diagram showing a conventional technique.

FIG. 4 is a perspective view showing one embodiment of the present invention.

FIG. 5 is a perspective view showing another embodiment of the present invention.

FIG. 6 is an explanatory view showing still another embodiment of the present invention.

FIG. 7 is an explanatory view showing still another embodiment of the present invention.

FIG. 8 is an explanatory view showing still another embodiment of the present invention.

FIG. 9 is an explanatory view showing still another embodiment of the present invention.

FIG. 10 is a sectional view showing the size of the embodiment shown in FIG. 9;

FIG. 11 is a sectional view of a representative example of the embodiment shown in FIG. 7;

FIG. 12 is a sectional view of a representative example of the embodiment shown in FIG. 8;

FIG. 13 is an explanatory view showing still another embodiment of the present invention.

FIG. 14 is a sectional view showing still another embodiment of the present invention.

FIG. 15A is a sectional view showing the size of the embodiment shown in FIG. 14; (B) is an end view showing one end of (A).

FIG. 16 (A) is a perspective view showing still another embodiment of the present invention. (B) is sectional drawing which shows another Example of this invention. (C) is an end view showing one end of (B).

FIG. 17A is a cross-sectional view showing still another embodiment of the present invention. (B) is an end view showing one end of (A).

FIG. 18 is a perspective view showing still another embodiment of the present invention.

FIG. 19 is a sectional view showing still another embodiment of the present invention.

FIG. 20A is a side view showing a conventional technique. (B)
1 is an end view showing one end of FIG. (C)
FIG. 5A is an end view showing the other end of FIG.

FIG. 21 (A) is a perspective view showing still another embodiment of the present invention. (B) is an end view showing one end of (A).

FIG. 22 (A) is a perspective view showing still another embodiment of the present invention. (B) is an end view showing one end of (A).

FIG. 23 is a perspective view showing still another embodiment of the present invention.

FIG. 24 is a perspective view showing still another embodiment of the present invention.

FIG. 25 is a perspective view showing still another embodiment of the present invention.

FIG. 26A is a perspective view showing still another embodiment of the present invention. (B) is sectional drawing which shows another Example of this invention. (C) is an end view showing the other end of (B).

FIG. 27 is a perspective view showing still another embodiment of the present invention.

FIG. 28 is a perspective view showing still another embodiment of the present invention.

FIG. 29 is a perspective view showing a conventional technique.

FIG. 30 is a perspective view showing still another embodiment of the present invention.

FIG. 31 is a sectional view of a representative example of the embodiment shown in FIG. 30;

FIG. 32A is a cross-sectional view showing an example of the dimensions of still another embodiment of the present invention. (B) is an end view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper punctum 2 Lower punctum 7 Upper lacrimal canaliculus 11 Lacrimal sac 12 Lacrimal duct 19 Injury 22 Thin tube-shaped or rod-shaped vertical part 23 Collar 24 Central part 26 Enlarged part 40 Side part 40 Connecting member 42 End Member 42A Front part of end member 42B Rear part of end member 44 Center mark 45 Carrot-shaped end member 47 Part in contact with brim 49 Cut 51, 52 Smooth border 53 Blind end 61 Probe 91 Front end 92 Reconstruction of lacrimal passage Instrument tube 93 Shaft 95 Protruding part of tip W1 Partition wall g1 Step r Angle

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] July 13, 1999 (1999.7.1)
3)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction contents]

In addition to such conditions of tensile strength and flexibility, it is also important that they are harmless to the human body. From such a viewpoint, silicone rubber is suitable as a material suitable for the intubation device. It is also possible to form only the surface layer with silicone rubber. In general, silicone rubber tends to increase in strength such as tensile strength as hardness increases.
The shorter and more rigid the silicone tube, the harder it bends.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0022

[Correction method] Change

[Correction contents]

The flexibility of the connecting members 40 and 24 and the end member 42 can be evaluated, for example, based on the Shore hardness specified by JIS. Shore hardness is measured with a durometer (Durom)
eter) and the unit is Shore A (JI
S). The higher the numerical value of the Shore hardness, the higher the hardness.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0054

[Correction method] Change

[Correction contents]

As shown in FIG. 26, the end members 42A, 42
B, that is, the thinner tube or rod 40 may gradually become thinner as it approaches the collar 23 from the thicker tube. The maximum diameter of the thinner tube or rod is 0.5-0.7mm and the minimum diameter is 0.3-0.4m
m.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0057

[Correction method] Change

[Correction contents]

FIG. 29 shows an example of a match stick-shaped silicone tube used for an intractable disease of lacrimal canaliculus obstruction.
In this example, there is an enlarged portion 26 at one end like a match stick (for example, see Katsuaki Kurihashi: Dakoriology, Medical Aoi Shuppan, Tokyo, 1998). Since such a tube has poor stability, it may be better to fix the enormous portion 26 at the inner corner of the eye with a nylon thread or the like.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0058

[Correction method] Change

[Correction contents]

As shown in FIG. 30, the tube portion 42 of the match-shaped silicone tube is replaced with the thicker tube 42.
By using the thinner tube or rod 40, the stability in the lacrimal passage is improved, and it is not necessary to fix the enormous portion 26 at the inner eye corner with a nylon thread or the like.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0060

[Correction method] Change

[Correction contents]

FIG. 32 shows an example similar to the example of FIG. The two portions 42A and 42B of the end member 42 are separate members having different hardnesses and are integrated by an adhesive. For example, if the front portion 42A of the end member is made of a softer material than the rear portion 42B, it becomes easier to pass through a raised portion or a curved portion in the lacrimal canal. The dimensions shown in FIG. 32 are preferred examples.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0061

[Correction method] Change

[Correction contents]

[0061]

According to the intubation device for reconstructing lacrimal canal of the present invention, when the outer diameter of the connecting members 40, 24 is smaller than the outer diameter of the end member 42, both side portions 40 of the connecting member are soft, and Is relatively hard, so that the risk of tearing of the punctum or lacrimal canaliculus after placement is very small.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is a diagram showing a conventional technique.

FIG. 2 is a diagram showing a conventional technique.

FIG. 3 is a diagram showing a conventional technique.

FIG. 4 is a perspective view showing one embodiment of the present invention.

FIG. 5 is a perspective view showing another embodiment of the present invention.

FIG. 6 is an explanatory view showing still another embodiment of the present invention.

FIG. 7 is an explanatory view showing still another embodiment of the present invention.

FIG. 8 is an explanatory view showing still another embodiment of the present invention.

FIG. 9 is an explanatory view showing still another embodiment of the present invention.

FIG. 10 is a sectional view showing the size of the embodiment shown in FIG. 9;

FIG. 11 is a sectional view of a representative example of the embodiment shown in FIG. 7;

FIG. 12 is a sectional view of a representative example of the embodiment shown in FIG. 8;

FIG. 13 is an explanatory view showing still another embodiment of the present invention.

FIG. 14 is a sectional view showing still another embodiment of the present invention.

FIG. 15A is a sectional view showing the size of the embodiment shown in FIG. 14; (B) is an end view showing one end of (A).

FIG. 16 (A) is a perspective view showing still another embodiment of the present invention. (B) is sectional drawing which shows another Example of this invention. (C) is an end view showing one end of (B).

FIG. 17A is a cross-sectional view showing still another embodiment of the present invention. (B) is an end view showing one end of (A).

FIG. 18 is a perspective view showing still another embodiment of the present invention.

FIG. 19 is a sectional view showing still another embodiment of the present invention.

FIG. 20A is a side view showing a conventional technique. (B)
1 is an end view showing one end of FIG. (C)
FIG. 5A is an end view showing the other end of FIG.

FIG. 21 (A) is a perspective view showing still another embodiment of the present invention. (B) is an end view showing one end of (A).

FIG. 22 (A) is a perspective view showing still another embodiment of the present invention. (B) is an end view showing one end of (A).

FIG. 23 is a perspective view showing still another embodiment of the present invention.

FIG. 24 is a perspective view showing still another embodiment of the present invention.

FIG. 25 is a perspective view showing still another embodiment of the present invention.

FIG. 26A is a perspective view showing still another embodiment of the present invention. (B) is sectional drawing which shows another Example of this invention. (C) is an end view showing one end of (B).

FIG. 27 is a perspective view showing still another embodiment of the present invention.

FIG. 28 is a perspective view showing still another embodiment of the present invention.

FIG. 29 is a perspective view showing a conventional technique.

FIG. 30 is a perspective view showing still another embodiment of the present invention.

FIG. 31 is a sectional view of a representative example of the embodiment shown in FIG. 30;

FIG. 32A is a cross-sectional view showing an example of the dimensions of still another embodiment of the present invention. (B) is an end view thereof.

[Description of Signs] 1 Upper punctum 2 Lower punctum 7 Upper lacrimal canaliculus 11 Lacrimal sac 12 Nasal lacrimal duct 19 Injured 22 Thin vertical tube-shaped or rod-shaped part 23 Collar 24 Central part 26 Enlarged part 40 Side part Reference Signs List 40 connection member 42 end member, tube 42A front portion of end member 42B rear portion of end member 44 center mark 45 carrot-shaped end member 47 portion in contact with brim 49 cut 51, 52 smooth boundary portion 53 blind end 61 sonson 91 Tip part 92 Tube of instrument for lacrimal canal reconstruction 93 Shaft 95 Protruding part of tip part W1 Partition wall g1 Step r Angle

Claims (25)

[Claims] 1. Two thick tubular end members (42) arranged on both sides and two end members (4).
Each of the end members (42) is composed of a thin tube-shaped or rod-shaped connection member (40, 24) for connecting 2).
Has a notch (49) for inserting the probe, the end of the end member (42) is a blind end (53), and the connecting members (40, 24) are in the central portion (24) and both sides thereof. (40), and both sides (40) of the connecting member.
Are more flexible than the central part (24) and the end member (42) of the connecting member, and the outer diameter of the connecting member (40, 24) is smaller than the outer diameter of the end member (42). Intubation device for reconstructing lacrimal tract. 2. The shore hardness of both sides (40) of the connecting member is 38 to 42 (shore A), and the shore hardness of the center portion (24) and the end member (42) of the connecting member is 70 to 8 (short A).
0 (short A).
The intubation device for reconstructing lacrimal canal according to 1. 3. A central part (24) and both side parts (4) of the connecting member.
The intubation device for reconstructing lacrimal canal according to claim 1 or 2, wherein a vertical portion (22) is arranged between 0). 4. An end member comprising a front portion (42A) and a rear portion (42B), wherein the outer diameter of the front portion (42A) is smaller by 0.1 to 0.3 mm than the outer diameter of the rear portion (42B). 4. The method according to claim 1, wherein
Item 4. The intubation device for reconstructing lacrimal canal according to Item 4. 5. The intubation device for reconstructing a lacrimal canal according to claim 1, wherein the end member is of a carrot type (45). 6. A partition wall (W) inside the end members (42, 45).
The intubation device for lacrimal canal reconstruction according to any one of claims 1 to 5, wherein 1) is included. 7. A step (g) inside the end members (42, 45).
The intubation device for lacrimal canal reconstruction according to any one of claims 1 to 5, wherein the device has (1). 8. One thick tubular end member (4).
2) and one collar (23) are connected by a thinner tube-shaped or rod-shaped connecting member (40), and the end member (42) is pipe-shaped and has a blind end (53); The outer diameter of (40) is smaller than the outer diameter of the end member,
The end member comprises a front part (42A) and a rear part (42B), and the outer diameter of the front part (42A) is the rear part (42B).
An intubation device for lacrimal canal reconstruction characterized in that the outer diameter of the intubation is smaller by 0.1 to 0.3 mm. 9. The end member has a Shore hardness of 70 to 80 (sh).
ore A), and the shore hardness of the connecting member is 38-4.
2 (shore A), length 12-15 mm, outer diameter 0.3-0.5 mm, shore hardness of collar (23) 70-80 (shore A), diameter 1.5 mm
The intubation device for lacrimal canal reconstruction according to claim 8, wherein the thickness is 0.1 to 0.2 mm. 10. The intubation device for lacrimal canal reconstruction according to claim 8, wherein the end member is of a carrot type (45). 11. A partition (W1) is formed inside an end member (42, 45).
11. The intubation device for lacrimal canal reconstruction according to any one of 10. 12. The intubation device for reconstructing a lacrimal canal according to claim 8, wherein the collar (23) is fan-shaped. 13. A step (g) inside the end members (42, 45).
13. The method according to claim 8, wherein 1) is formed.
The intubation device for lacrimal canal reconstruction according to any one of the above. 14. The lacrimal passage according to claim 1, wherein the connecting members (40, 22, 24) and the end members (42, 45) are formed of silicone rubber. Intubation device for reconstruction. 15. A collar (2) made of silicone rubber.
3) and a shaft (93) connected to the collar (23).
And a tip (91) connected to the shaft (93).
And a tube (9) having one end connected to its tip (91).
2) and an end member (42) connected to the other end of the tube (92), and a shaft (93) and a tip (91).
An intubation device for lacrimal canal reconstruction characterized by integrating the above. 16. The intubation device for reconstructing a lacrimal canal according to claim 15, wherein the shaft (93) and the tip (91) are perpendicular to each other. 17. A front portion (42A) of an end member (42).
The intubation device for reconstructing lacrimal canal according to claim 15 or 16, characterized in that the diameter of the incision is made smaller by 0.1 to 0.3 mm than the rear part (42B). 18. The connecting member according to claim 8, wherein when the connecting member is made of a hard material, the connecting member is made of a soft material at least about 5 mm from the collar.
8. The intubation device for reconstructing lacrimal canal according to any one of items 7 to 7. 19. The intubation device for reconstructing a lacrimal canal according to claim 8, wherein one end of the connecting member (40, 24) is further thinned at least about 5 mm from the collar. 20. An intubation device for reconstructing a lacrimal canal according to claim 8, wherein one end of the connecting member (40, 24) is made thinner toward the collar (23). 21. The connecting member according to claim 8, wherein the connecting member is gradually thinned from the end member to the collar. Intubation device for reconstruction of the lacrimal canal. 22. When the vertical portion (22) is connected to the horizontal portion of the connecting member (40, 24) made of a hard material, the collar (2) is used.
22. The part (47) contacting with (3) gradually narrows as it approaches the collar (23).
The intubation device for lacrimal canal reconstruction according to any one of the above. 23. The intubation device for reconstructing a lacrimal canal according to claim 8, wherein the connecting member has a portion contacting the curved brim. 24. The method according to claim 8, wherein a portion in contact with the curved brim becomes thinner as approaching the brim.
4. The intubation device for lacrimal canal reconstruction according to any one of 3. 25. An enlarged portion (2) at one end of the end member (42).
6), the end member (42) is formed of a match rod-shaped silicone tube having a blind end (53) at the other end of the end member (42), and the thick tube-shaped end member (42) is made thinner. An intubation device for lacrimal canal reconstruction, which is connected to a tube-like or rod-like connection member (40, 24).