JP2601738Y2 - Double lumen tube for endoscope - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tube for applying a biological tissue adhesive containing animal protein as a main component to humans or animals. More specifically, for an endoscope used to insert into a luminal tissue of a human or animal using an endoscope and apply a multi-component type biological tissue adhesive to the wound of the tissue to seal the wound For double lumen tubes.

[0002]

2. Description of the Related Art A biological tissue adhesive containing an animal protein as a main component is formed by mixing a solution of a protein with a solution of a coagulation factor which promotes the formation of a clot of the protein. As this kind of living tissue adhesive, for example, a two-component solution containing a solution containing factor XIII and fibrinogen and a thrombin-containing solution is known. Means for applying the living tissue adhesive to living tissue is known. Has already been proposed (JP-A-64-2584).
No. 3, Japanese Unexamined Patent Publication No. Sho 62-40040,
No. 48198). The invention of Japanese Patent Application Laid-Open No. 64-25843 is suitable for application to a complicated internal tissue such as the inside, and the invention of Japanese Patent Application Laid-Open No. 62-40040 is suitable for a tissue surface of a large area such as a skin surface. The invention of Japanese Utility Model Publication No. 4-48198 is suitable for application to deep luminal tissues such as stomach, intestine, and bronchi.

The invention of Japanese Utility Model Publication No. 4-48198 relates to a tube for applying a living tissue adhesive, which is suitable for application to deep luminal tissues such as the stomach, intestines, and bronchi. Greatly affected by the viscosity difference of
In some cases, imbalance occurred in the amount of the drug solution discharged from the two lumens, and the preparation of the biological tissue adhesive was not successful. Then, when the size of the two lumens was changed to eliminate the effect of the difference in viscosity of the drug solution, the connection end of the syringe filled with the drug solution could be erroneously connected because the size of the connection end with the syringe was the same. Was.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and there is no imbalance in the discharge amount of the two components of the biological tissue adhesive, and there is a possibility that the connection of the syringe may be mistaken. It is an object of the present invention to provide a double-lumen tube for a living tissue adhesive without any.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a main body tube having two lumens of different sizes, and two introduction tubes respectively connected to the lumens of the main body tube. Wherein each of the introduction tubes has a lumen substantially equal to the lumen to be connected and has a connection end with the syringe, and a color of the connection end of the two introduction tubes. It uses a double lumen tube for endoscopes that is different.
The color of the connection end is preferably matched to the color of the container that stores the drug solution to be filled in the syringe connected to the connection end.

[0007]

According to the above construction, the size of the two liquid passages is different so that the discharge amount of the chemical liquid is equalized in accordance with the viscosity of the flowing chemical liquid, so that the discharge amount of the chemical liquid discharged from the two lumens No imbalance occurs. Also,
Since the color of the connection end portion with the syringe is the same as the color of the medical solution container filled in the syringe connected to the syringe, the connection of the syringe (that is, the introduction of the medical solution) is not mistaken.

[0008]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a double lumen tube according to an embodiment of the present invention, and FIGS. 2 and 3 are enlarged longitudinal sectional views showing examples of connection between a main body tube and an introduction tube in the double lumen tube of the present invention. . Also,
FIG. 4 is a diagram for explaining how to use the double lumen tube of FIG. As shown in FIGS. 1 and 2, the double lumen tube of the present invention includes a main body tube 1 having two lumens 11 and 12 having different sizes,
And two introduction tubes 21 and 22 connected to the two lumens 11 and 12, respectively.
The colors of the connection ends 23 and 24 of the first and second syringes 31 and 32 (see FIG. 4) are different.

The main body tube 1 is a tube having two different size liquid medicine flow channels formed in parallel in the longitudinal direction, a lumen 11 and a lumen 12, and an introduction tube 2.
The diameter of the connection end 13 with the first and the second 22 is increased if necessary. And the introduction tubes 21 of the lumens 11 and 12,
22 are connected to the introduction tubes 21 and 22 respectively.
May be expanded in a tapered shape or a stepped shape so that the introduction tubes 21 and 2 can be connected thereto.
2 are inserted and connected in a liquid-tight manner (see FIGS. 2 and 3). The size of the lumens 11 and 12, that is, the cross-sectional area of the chemical solution, is determined so that the discharge amount of the chemical solution becomes equal in accordance with the viscosity of the flowing chemical solution. That is, lumen 1
Assuming that the cross-sectional areas 1 and 12 are S ₁ and S ₂ , respectively, the viscosity of the chemical is μ ₁ and μ ₂ , and the density of the chemical is ρ ₁ and ρ ₂ , respectively.
Kinematic viscosity = because it is Viscosimetry] / [density] = [area] / [time], when the discharge amount is equal to S ₁ / S ₂ = [μ
_{Since 1} / ρ ₁ ] / [μ ₂ / ρ ₂ ] holds, the ratio of the sizes of the lumens 11 and 12 is determined so as to be proportional to the viscosity of the liquid medicine and inversely proportional to the density.

The introduction tubes 21 and 22 are tubes having one lumen having substantially the same size as the lumens 11 and 12 to be connected to each other, and one end thereof is connected to the lumens 11 and 12 of the main tube 1 respectively. While being connected, the other ends are formed at connection ends 23 and 24 for connecting syringes, respectively. At the connection ends 23, 24 there are generally tubular connectors tapered slightly towards the open ends so that the narrowed ends or tips 33, 34 of the syringes 31, 32 can be connected. Has been adopted,
A plurality of components of the biological tissue adhesive are connected to the connection end 2 using syringes 31 and 32 filled with these components, respectively.
From 3 and 24, it is poured into the affected part via a double lumen tube. Note that lumens of substantially the same size include those having a ratio of the cross-sectional area of the lumen equal to the ratio of the cross-sectional area of the lumens 11 and 12.

The syringes 31, 3 of the introduction tubes 21, 22
The connection end portions 23 and 24 with the connection member 2 are provided with different parts so that there is no mistake in introducing the components of the biological tissue adhesive, that is, there is no mistake in connection with the syringe filled with each component of the biological tissue adhesive. It is colored. Connection ends 23, 24
Is preferably matched to the color of the container that contains the components of the living tissue adhesive to be introduced into each. Further, the colors of the syringes 31 and 32 filled with the respective components of the living tissue adhesive are also matched with the colors of the containers accommodating the components of the living tissue adhesive to be filled therein, and the connection ends 23 and 24 and the syringes 31 and 32 are formed. If the color matches the color of the chemical solution container, it is possible to reliably prevent a wrong connection of the chemical solution.

The main body tube 1 and the introduction tube 21,
22 is generally formed of the same material in consideration of adhesiveness, but the main body tube 1 is preferably formed as a relatively hard tube because it is inserted into the luminal tissue using an endoscope. As a material for forming the tubes 1, 21, 22, a transparent or translucent synthetic resin that is resistant to bending, such as polyethylene, polypropylene, polycarbonate, or somewhat soft polyvinyl chloride, is suitably used. Also,
As a material for forming the connection end portions 23 and 24 of the introduction tubes 21 and 22, in addition to the above-described material for forming the tube,
Transparent or translucent synthetic resins such as polystyrene, polyamide, rigid polyvinyl chloride, polymethyl methacrylate, styrene acrylonitrile copolymer, and acrylonitrile butadiene styrene copolymer can also be employed.

Next, how to use the double lumen tube of the present invention will be described. First, the body tube 1 of the double lumen tube is inserted into, for example, a stomach (not shown) using an endoscope (not shown). Next, as shown in FIG. 4, the syringe 3 in which the connection ends 23 and 24 of the introduction tubes 21 and 22 are filled with the respective components of the living tissue adhesive, respectively.
Attach 1, 32. Then, while looking at the endoscope, the site to which the living tissue adhesive is applied, that is, the affected part is searched, and the tip of the main body tube 1 is brought close to the affected part. The components of the living tissue adhesive filled in the shampoo are simultaneously poured out in equal amounts, mixed on the surface of the affected part to be adjusted into the living tissue adhesive, and accurately cover the affected part surface.

[0014]

As is apparent from the above description, by employing the double lumen tube of the present invention, there is no imbalance in the discharge amount of the two components of the biological tissue adhesive, and the connection of the syringe is prevented. Therefore, there is no possibility of making a mistake, so that the living tissue adhesive can be reliably and safely applied to the affected part.

[Brief description of the drawings]

FIG. 1 is a plan view of a double lumen tube according to an embodiment of the present invention.

FIG. 2 is an enlarged longitudinal sectional view showing an example of connection between a main body tube and an introduction tube in the double lumen tube of the present invention.

FIG. 3 is an enlarged longitudinal sectional view showing another connection example of the main tube and the introduction tube in the double lumen tube of the present invention.

FIG. 4 is a view for explaining how to use the double lumen tube of FIG. 1;

[Explanation of symbols]

 Reference Signs List 1 main body tube 11 lumen 12 lumen 21 introduction tube 22 introduction tube 23 connection end 24 connection end 31 syringe 32 syringe

──────────────────────────────────────────────────続 き Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) A61M 25/00 A61B 17/11 A61B 1/00 A61M 37/00

Claims (2)

(57) [Scope of request for utility model registration] 1. A tube for inserting a bicomponent adhesive into a wound of a human or animal through an endoscope and applying a multi-component type biological tissue adhesive to a wound of the tissue.
A body tube having two lumens, and two introduction tubes respectively connected to the lumen of the body tube, each of the introduction tubes having a lumen substantially equal to the lumen to be connected; A double lumen tube for an endoscope having a connection end portion with a syringe, wherein connection colors of two introduction tubes are different in color. 2. The double lumen tube according to claim 1, wherein the color of the connection end of the introduction tube with the syringe is matched with the color of the container of the drug solution introduced into the introduction tube.