JP3031221B2 - Spray head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a nozzle for spraying a biological tissue adhesive. More specifically, the present invention relates to a nozzle for applying an adhesive for bonding living tissue containing animal protein as a main component to humans or animals. INDUSTRIAL APPLICABILITY The nozzle of the present invention is suitably used particularly for treatment of skin tears and burns, hemostasis or skin transplantation.

[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 biological tissue adhesive, for example, a two-component solution containing a solution containing factor XIII and fibrinogen and a thrombin-containing solution is known, and is widely used as a biological tissue adhesive. .
As a method of applying the two components of these adhesives, two different components are stored in advance in two separate syringe bodies, and the two solutions stored in these syringe bodies are simultaneously poured out. A method of applying a mixture while mixing two solutions has been proposed (Japanese Patent Laid-Open No. 64-25843).
JP, JP-A-64-40040, JP-A-5-5-5
No. 7009, Japanese Utility Model Publication No. 3-47609, Japanese Utility Model Application Publication No. 4-48198, Japanese Utility Model Publication No. 6-52839, etc.).

[0003] For example, in the invention of Japanese Utility Model Publication No. 3-47609, the conical portions of two syringes are connected by a collecting head including a conveyor flow path for each component of the living tissue adhesive, and the plungers are integrally operated. By causing the two syringes to simultaneously inject the solution to the collecting head, the aseptic gas was supplied from the aseptic gas supply channel provided in the collecting head, and the solution was injected into the collecting head.
The liquid can be sprayed in the form of a mist, and the center line of the outlet of the aseptic gas supply channel is arranged so as to intersect at a predetermined position in front, so that the adhesive can be applied over a wide range. It is characterized by. In addition, 6-52839
The idea of the publication is that two syringes fitted with a spray head provided with a sterile gas supply channel, a small high-pressure cylinder and a pressure regulator are integrated, and the spray head and the regulator are connected by a tube. ,
It features improved operability. In addition, Japanese Patent Application Laid-Open
The invention of Japanese Patent No. 57009 discloses a liquid tube attached to a flexible tube in order to apply to an operation using an endoscope in the abdominal cavity or the like.

[0004]

However, except for the invention disclosed in Japanese Utility Model Laid-Open No. 6-52839, these conventional spray heads cause solidification of the adhesive when the injection operation of the adhesive is interrupted. May need to be replaced, and must be introduced using a long tube from a facility unit or a long tube from a large high-pressure cylinder to ensure sterile gas. For this reason, there is a problem that a long tube or a large cylinder may hinder the operation, prolong the operation time or sometimes affect the operation result. On the other hand, the device disclosed in Japanese Utility Model Laid-Open No. 6-52839 has good workability and does not cause solidification of the adhesive due to interruption of the injection operation. However, the tip of the adhesive injection nozzle is located outside the air nozzle. Since it is exposed, it has a drawback that the adhesive is hard to atomize and difficult to spray uniformly. The present invention has been made in view of such circumstances, and it is possible to spray the adhesive uniformly, and it is difficult for the adhesive to solidify. For example, the adhesive is hardened at the tip of the adhesive injection nozzle. It is an object of the present invention to provide a spray head that can easily remove the solidified adhesive even if it occurs.

[0005]

In order to solve the above-mentioned problems, the present invention employs a structure in which a chemical solution nozzle is retracted into an air nozzle when used and protrudes from the air nozzle when not used. That is, the present invention provides a sprayer main body having a first chemical liquid passage, a second chemical liquid passage, and an air passage, and a first chemical liquid passage connected to the first chemical liquid passage and the second chemical liquid passage at a distal end of the sprayer base. An air nozzle having a nozzle, a second nozzle, and a bore having an inner diameter larger than the outer diameter of the first and second nozzles, and the first and second nozzles being respectively concentrically inserted into the bore. Wherein the air nozzle is slidable from a position adjacent to the sprayer base tip to a separation position , and the first and second nozzles are housed in the air nozzle at a separation position from the sprayer base tip of the air nozzle. The spray head is configured to protrude from the air nozzle at a position adjacent to the tip of the sprayer base. Here, the distal end structure of the sprayer base may be configured such that a cylindrical air nozzle mounting portion prepared separately is attached to the distal end, and the air nozzle is slidably inserted into the air nozzle mounting portion. .

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of a spray head of the present invention, FIG. 2 is a view showing a state in which an air nozzle is moved to a position adjacent to a tip end of a sprayer base in FIG.
1 is a side view of FIG. 1, and FIG. 4 is a plan view of FIG. As shown in FIGS. 1 to 4, the spray head according to the present invention includes a sprayer base 1 having two chemical liquid passages (a first chemical liquid passage 11, a second chemical liquid passage 12) and an air passage 13; 2 connected to the chemical solution passages 11 and 12 at the tip of
One nozzle (first nozzle 2, second nozzle 3) and an air nozzle 4 concentrically extrapolated to these nozzles 2, 3. The air nozzle 4 is slidable from a position adjacent to the tip of the sprayer base 1 to a position apart therefrom. The nozzles 2 and 3 are spaced apart from the tip of the sprayer base 1 of the air nozzle 4.
At the position, it is housed in the air nozzle 4, and protrudes from the air nozzle 4 at a position adjacent to the tip of the sprayer base 1.

[0007] The sprayer base 1 has a first chemical liquid passage 11 and a second chemical liquid passage 11.
At the base end thereof, a first chemical solution passage 11, a second chemical solution passage 12, and a first and a second syringe (not shown), respectively. The connection ends 13 and 14 are connected at their ends to the connection ends 17 and 1 respectively connecting the first nozzle 2 and the second nozzle 3.
A connection end 15 and a room 16 for connecting the air passage 13 and an air supply source (not shown) are provided in the middle portion of the air nozzle 8 and the air nozzle mounting portion 5. The air nozzle 4 has nozzle portions 41 and 42 for accommodating the first and second nozzles 2 and 3, respectively.
The first and second nozzles 2, which are respectively inserted into the two lumens,
3 is formed larger than the outer diameter. It is preferable that the air nozzle mounting portion 5 is formed separately from the sprayer base 1, and the air nozzle 4 is inserted into the air nozzle mounting portion 5 and then attached to the tip of the sprayer base 1.

[0008] A connection end 1 from an air supply source such as a gas cylinder.
The air supplied to the room 16 through the air passage 5 is compressed and injected through the air passage 13 into the space 6 formed by the tip of the sprayer base 1, the air nozzle mounting portion 5 and the air nozzle 4, It is injected to the outside through the space between the lumens of the nozzle portions 41 and 42 of the nozzle 4 and the first and second nozzles 2 and 3. At this time, the air injected from the air nozzle 4 converts the first and second chemical solutions (eg, fibrinogen solution and thrombin solution) respectively injected through the first and second nozzles 2 and 3 into mist. I do. In addition, the present invention
Needless to say, the use is not limited to the adhesive, but can be adopted for other uses.

[0009]

As is apparent from the above description, by employing the spray head of the present invention, finer spraying can be performed at the time of spraying, and clogging of the air nozzle due to solidification of the adhesive when not in use. Can be prevented. Even if the adhesive solidifies, the solidified material can be easily removed.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a spray head according to the present invention.

FIG. 2 is a view showing a state in which an air nozzle is moved to a position adjacent to a tip end of a sprayer base in FIG.

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a plan view of FIG. 1;

[Explanation of symbols]

 Reference Signs List 1 sprayer base 11 first chemical liquid passage 12 second chemical liquid passage 13 air passage 2 first nozzle 3 second nozzle 4 air nozzle 5 air nozzle attachment

Continuation of front page (58) Fields investigated (Int. Cl. ⁷ , DB name) A61B 17/11 A61M 3/00 A61M 35/00 A61L 25/00

Claims (2)

(57) [Claims] 1. A sprayer body having a first chemical liquid passage, a second chemical liquid passage, and an air passage, and a first chemical liquid passage connected to the first chemical liquid passage and the second chemical liquid passage at a distal end of the sprayer base. An air nozzle having a nozzle, a second nozzle, and a bore having an inner diameter larger than the outer diameter of the first and second nozzles, and the first and second nozzles being concentrically inserted into the bores, respectively; Wherein the air nozzle is slidable from a position adjacent to the sprayer base tip to a separation position , and the first and second nozzles are housed in the air nozzle at a separation position from the sprayer base tip of the air nozzle. A spray head configured to protrude from an air nozzle at a position adjacent to a tip end of the sprayer base. 2. The spray head according to claim 1, wherein a cylindrical air nozzle mounting portion is attached to a tip of the sprayer base, and an air nozzle is slidably inserted into the air nozzle mounting portion.