JP2018000560A - Applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an applicator capable of preventing mixing of two kinds of liquids after spraying, with a simple and compact structure.SOLUTION: An applicator 2 comprises: a first nozzle 23 provided on a tip of a first liquid supply pipe 21, and discharges a first liquid; a second nozzle 24 provided on a tip of a second liquid supply pipe 22, and discharges a second liquid; and a cylindrical nozzle head 20 for regulating positions of the first nozzle 23 and second nozzle 24, regulating injection ports of gas jetted from outer peripheries of the first nozzle 23 and the second nozzle 24, and containing gas channels 31, 32, for passing the compression gas. The first nozzle 23 and the second nozzle 24 are arranged so as to separate in a width direction orthogonal to an axial line L direction of the nozzle head 20. The first discharge port 23a and second discharge port 24a are exposed from a tip surface 26 crossing the axial line L of the nozzle head 20. The tip surface 26 has a protection wall part 40 which is positioned between the first discharge port 23a and second discharge port 24a, and protrudes from the tip surface 26 to the axial line L direction.SELECTED DRAWING: Figure 1

Description

  The present invention particularly relates to a two-component mixed applicator.

  Conventionally, a two-component mixing type applicator is known. For example, as described in Patent Document 1, an applicator used for a biological tissue adhesive composed of two solutions of fibrinogen and thrombin is known. In this applicator, a spray head and a tube are provided for each of the two liquids. The drug solution that has flowed through the tube is ejected from the ejection port at the tip, and is sheared and sprayed into particles. Fibrinogen and thrombin sprayed from the jet outlet contact for the first time in the process before being applied to the application surface, and solidify on the application surface.

  Moreover, as described in Patent Document 2, a bioadhesive sprayer that mixes two liquids is known. Two chemical liquid outlets and two air outlets are formed in the cylindrical spray portion of the sprayer. A chemical solution outlet is formed on the bottom surface formed in the axial direction of the spray portion, and an air outlet is formed on the back surface perpendicular to the bottom surface. A central partition plate is formed in the spray portion in the axial direction. The chemical solution outlets are respectively formed on both sides of the central partition plate. Moreover, said air blower outlet is each formed in the both sides of a center partition plate. The two types of chemical liquids ejected from the chemical liquid outlet are atomized and mixed by the air ejected from the air outlet and sprayed as a bioadhesive.

Japanese Patent Laid-Open No. 2003-235977 Japanese Patent No. 3060644

  In the applicator described in Patent Document 1, two spray heads are integrated. Therefore, the two jet nozzles at the tip are adjacent to each other. For example, in order to enable medical use, the distance between two nozzles (tubes) must be shortened in this way in order to allow the applicator to be inserted into the small hole. However, if the device is left for a while after the spraying is finished, the liquid agent leaks from the tip of the nozzle (tube), and the two liquids are mixed at the tip, and sticking may occur. If sticking occurs at the tip, the tip must be cleaned before the instrument can be used again. In the sprayer described in Patent Document 2, it is necessary to provide a bottom surface and a back surface in the spray portion, and to form a chemical solution outlet and an air outlet, respectively.

  An object of this invention is to provide the applicator which can prevent mixing of 2 liquids after spraying by simple and small structure.

  An applicator according to an aspect of the present invention is an applicator for atomizing and mixing a first liquid and a second liquid using a compressed gas, and a first liquid supply pipe to which the first liquid is supplied. A second liquid supply pipe to which the second liquid is supplied, a first nozzle that is provided at the tip of the first liquid supply pipe and discharges the first liquid from the first discharge port, and a tip of the second liquid supply pipe A second nozzle that discharges the second liquid from the second discharge port, and positions of the first nozzle and the second nozzle, and a gas injection port that is ejected from the outer periphery of the first nozzle and the second nozzle. And a cylindrical nozzle head that includes a gas flow path that is formed around the first nozzle and the second nozzle and that passes the compressed gas. The first nozzle and the second nozzle are in the axial direction of the nozzle head. And spaced apart in the width direction orthogonal to the first discharge port and the second discharge Is exposed from the tip surface intersecting the axis of the nozzle head, and the tip surface is provided with a shielding wall portion positioned between the first discharge port and the second discharge port and protruding in the axial direction from the tip surface. It has been.

  According to this applicator, the first liquid is discharged from the first discharge port of the first nozzle provided at the tip of the first liquid supply pipe, and the second nozzle provided at the tip of the second liquid supply pipe. The second liquid is discharged from the second discharge port. The compressed gas is jetted from the nozzle head through the gas flow passage formed around the first nozzle and the second nozzle. At this time, the first liquid from the first discharge port and the second liquid from the second discharge port are atomized and mixed by the compressed gas, and spraying is performed. Even after the spraying is finished, the first liquid and the second liquid can be slightly discharged from the first discharge port and the second discharge port. Even if the first liquid and the second liquid adhere to the tip surface of the nozzle head, the shielding wall portion restricts the movement of one liquid toward the other liquid. Therefore, in this applicator, the two liquids can be prevented from being mixed after spraying by the shielding wall provided between the first discharge port and the second discharge port. The gas flow path is formed around the first nozzle and the second nozzle, and there is no need to separately form a bottom surface and a back surface on the tip surface as in the above-described Patent Document 2. That is, the tip surface may be one surface extending in substantially the same direction. Since it is only necessary to provide a shielding wall on the front end surface, the configuration is simple and small.

  In some embodiments, the shielding wall portion protrudes in the axial direction from both the first discharge port and the second discharge port, and the first liquid formed with each of the first discharge port and the second discharge port as a top portion and It is provided so as not to overlap in the atomization region of the second liquid. In this case, since the shielding wall part does not overlap in each atomization area | region, at the time of spraying, a shielding wall part does not prevent spraying.

  In some embodiments, the shielding wall portion extends to both ends in the height direction perpendicular to both the axial direction and the width direction on the distal end surface. In this case, since the shielding wall portion extends to both ends in the height direction of the tip surface, it is possible to reliably prevent the two liquids from being mixed after spraying.

  According to some aspects of the present invention, it is possible to prevent the two liquids from being mixed after spraying with a simple and small configuration.

It is a figure which shows the structural example of the apparatus with which the applicator which concerns on 1st Embodiment of this invention was applied. It is a perspective view which shows the applicator of FIG. 3A is a longitudinal sectional view of the applicator, and FIG. 3B is a sectional view cut in the width direction perpendicular to FIG. 3A. It is a perspective view which shows the nozzle head part of the applicator of FIG. 5A is a view of the nozzle head portion of FIG. 4 as viewed from the tip side, and FIG. 5B is a cross-sectional view taken along the line Vb-Vb of FIG. 6A is a plan view of the nozzle head portion of FIG. 4, and FIG. 6B is a side view of the nozzle head portion of FIG. It is sectional drawing which cut | disconnected the nozzle head part in the direction perpendicular | vertical to the central axis of the longitudinal direction of a nozzle. It is a perspective view which shows the nozzle head part of the applicator which concerns on 2nd Embodiment. 9A is a view of the nozzle head portion of FIG. 8 as viewed from the tip side, and FIG. 9B is a cross-sectional view taken along the line VIIIb-VIIIb of FIG. 9A. FIG. 10A is a diagram showing an application state with the applicator of FIG. 4, and FIG. 10B is a diagram showing an application state with the applicator of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant descriptions are omitted.

  With reference to FIG. 1 and FIG. 2, the applicator 1 which applied the applicator 2 and applicator 2 which concern on 1st Embodiment is demonstrated. As shown in FIG. 1, for example, the application device 1 is a device that is applied to thoracic surgery, and in this case, is for applying a bioadhesive to an affected area of a patient. The coating device 1 includes a coating device 2 as a biomedical adhesive coating device. The coating apparatus 1 includes a gas pipe 4 connected to the coating tool 2 and a compressed gas source 3 that supplies compressed gas to the coating tool 2 through the gas pipe 4. The gas pipe 4 is appropriately provided with a filter 6 and the like. The compressed gas source 3 may be anything as long as it can supply or generate compressed gas. The compressed gas is, for example, compressed air.

  The applicator 2 is, for example, a disposable (disposable) type device. As shown in FIG. 1 and FIG. 2, the applicator 2 includes a first syringe A1 filled with a main agent as a first liquid and a second syringe A2 filled with a curing agent as a second liquid. It is attached. More specifically, a cylindrical first syringe holding portion 11 and a second syringe holding portion 12 are provided at the rear end portion of the main body 10 of the applicator 2. The tip of the first syringe A1 is inserted and held in the first syringe holding part 11, and the tip of the second syringe A2 is inserted and held in the second syringe holding part 12. The first syringe A1 and the second syringe A2 are installed in parallel, for example. The magnitude | sizes of 1st syringe A1 and 2nd syringe A2 may be the same, and may differ.

  There are no particular limitations on the types and substance names of the main agent and curing agent. As an example, the main agent may be a fibrinogen-containing solution, and the curing agent may be a thrombin-containing solution. The main agent and the curing agent exhibit a function as an adhesive when mixed.

  Pistons and rods (pressers) are inserted into the first syringe A1 and the second syringe A2, respectively, and these can be operated by one operation unit 14. The operation unit 14 is shared by the first syringe A1 and the second syringe A2. When an operator (such as a doctor) presses and pushes the operation unit 14 in the axial direction, the main agent in the first syringe A1 and the curing agent in the second syringe A2 are simultaneously sent into the main body 10.

  The main body 10 of the applicator 2 is provided with a gas introduction part 16 in the vicinity of the distal ends of the first syringe holding part 11 and the second syringe holding part 12. A gas pipe 4 is connected to the gas introduction part 16. The main body 10 includes an elongated tubular portion 17 that is provided continuously with the gas introduction portion 16 and extends straight in the axial direction. The tubular portion 17 is a hollow tube having an outer diameter of about 5 mm and a length of about 30 cm, for example. The axes of the first syringe A1 and the second syringe A2 and the axis of the tubular portion 17 are parallel, for example. The internal space of the tubular portion 17 communicates with the internal space of the gas introduction portion 16. Thereby, the compressed gas supplied from the compressed gas source 3 passes through the tubular portion 17.

  On the other hand, as shown in FIGS. 3A and 3B, in the tubular portion 17, a first liquid supply pipe 21 connected to the first syringe holding portion 11 for circulating the main agent, A second liquid supply pipe 22 that is connected to the two-syringe holding unit 12 and distributes the curing agent is disposed. The first liquid supply pipe 21 is supplied with the main agent from the first syringe A1, and the second liquid supply pipe 22 is supplied with the curing agent from the second syringe A2. The flow path of the compressed gas described above is formed inside the tubular portion 17 and outside the first liquid supply pipe 21 and the second liquid supply pipe 22.

  The applicator 2 includes a first nozzle 23 provided at the tip of the first liquid supply pipe 21 and a second nozzle 24 provided at the tip of the second liquid supply pipe 22. The applicator 2 includes a nozzle head 20 provided at the tip of the tubular portion 17. The nozzle head 20 defines the positions of the first nozzle 23 and the second nozzle 24, and defines the gas injection ports ejected from the outer circumferences of the first nozzle 23 and the second nozzle 24. The nozzle head 20 is, for example, a tubular cap having a truncated cone shape. The nozzle head 20 may have a cylindrical shape. The first discharge port 23a formed at the tip of the first nozzle 23 and the second discharge port 24a formed at the tip of the second nozzle 24 are exposed from the tip surface 26 of the nozzle head 20 (see FIG. 4). . The first nozzle 23 discharges the main agent from the first discharge port 23a. The second nozzle 24 discharges the curing agent from the second discharge port 24a.

  As described above, the first liquid supply pipe 21 with the first nozzle 23 connected to the tip and the second nozzle 24 to the tip are connected to the inside of one tubular body composed of the tubular portion 17 and the nozzle head 20. Two tubular bodies each including the second liquid supply pipe 22 are accommodated. These two tubular bodies are arranged substantially in parallel, for example. A nozzle head 20 that is separate from the tubular portion 17 may be attached to the tip of the tubular portion 17, or the nozzle head 20 may be formed integrally with the tubular portion 17. A first nozzle 23 separate from the first liquid supply pipe 21 may be attached to the tip of the first liquid supply pipe 21, or the first nozzle 23 is formed integrally with the first liquid supply pipe 21. May be. A second nozzle 24 separate from the second liquid supply pipe 22 may be attached to the tip of the second liquid supply pipe 22, or the second nozzle 24 is formed integrally with the second liquid supply pipe 22. May be.

  In the two-component mixing type applicator 1 and applicator 2, the tubular portion 17 is inserted into the patient's body through a small hole in a tubular member called a trocar. First, the compressed gas is supplied from the compressed gas source 3 to the nozzle head 20, and the operation unit 14 is operated in a state where the compressed gas is ejected from the outer periphery of the first nozzle 23 and the second nozzle 24. The coating material is discharged from 24 respectively. The main agent supplied to the first liquid supply pipe 21 and the first nozzle 23 is discharged from the first discharge port 23 a and supplied to the second liquid supply pipe 22 and the second nozzle 24 according to the operation of the operation unit 14. The curing agent is discharged from the second discharge port 24a. At this time, the compressed gas that has passed through the first flow path 31 and the second flow path 32 (see FIG. 5B) in the nozzle head 20 is injected from the front end surface 26, and the main agent, the curing agent, and the compressed gas collide. By doing so, a shear force acts on the main agent and the curing agent, and the main agent and the curing agent are atomized. When the application is finished, the operation of the operation unit 14 is stopped, and after the discharge of the coating agent is finished, the supply of the compressed gas from the compressed gas source 3 to the nozzle head 20 is stopped.

  Spraying is performed as described above. In the applicator 2, the bioadhesive obtained by mixing the two liquids can be uniformly and widely applied while spraying the two liquids in the form of a mist and mixing them reliably. In addition, the supply ratio of the main agent and the curing agent is, for example, 1: 1 (equal amount).

  After the spraying is performed, the supply and injection of the compressed gas are stopped, and the supply and discharge of the main agent and the curing agent are stopped. In particular, the applicator 2 of the present embodiment has a structure that prevents the main agent and the curing agent from being mixed at the distal end surface 26 after spraying.

  Hereinafter, the nozzle head 20 and the nozzle structure will be described with reference to FIGS. As shown in FIG. 5B, the first nozzle 23 and the second nozzle 24 are arranged along the axis L of the nozzle head 20. The first nozzle axis B1 of the first nozzle 23 and the second nozzle axis B2 of the second nozzle 24 are parallel to the axis L. The first nozzle 23 and the second nozzle 24 are separated in the width direction orthogonal to the axis L. The width direction is a direction in which the first nozzle 23 and the second nozzle 24 which are a plurality of nozzles are arranged.

  The nozzle head 20 includes, for example, a frustoconical peripheral wall portion 25 and a front end surface 26 formed on the front end side of the peripheral wall portion 25. A first through hole 27 and a second through hole 28 extending along the axis L direction are formed in the nozzle head 20. The first through hole 27 and the second through hole 28 extend in parallel, and each penetrate the nozzle head 20 in the axis L direction. The first through hole 27 and the second through hole 28 are separated in the width direction. A central wall 29 exists between the first through hole 27 and the second through hole 28.

  The first nozzle 23 is disposed in the first through hole 27. The second nozzle 24 is disposed in the second through hole 28. As shown in FIG. 7, the first nozzle 23 and the second nozzle 24 are, for example, a plurality of circumferential projections by a plurality of support protrusions 36 provided on the inner wall surfaces of the first through hole 27 and the second through hole 28. The place is supported. For example, as shown in FIG. 7, three support protrusions 36 arranged at equal intervals in the circumferential direction are provided on the inner wall surface of the first through hole 27. The front end of the support protrusion 36 (the front end in the radial direction) is in contact with the outer peripheral surface of the first nozzle 23. The three support protrusions 36 have the same shape and size, and the first nozzle 23 is installed coaxially with respect to the first through hole 27. If each shape and size is changed, it can be intentionally installed at a position deviated from the same axis. The second nozzle 24 is similarly installed with respect to the second through hole 28. With this structure, the first nozzle 23 and the second nozzle 24 are positioned and held inside the first through hole 27 and the second through hole 28.

  As described above, the first discharge port 23 a of the first nozzle 23 and the second discharge port 24 a of the second nozzle 24 are respectively exposed from the tip surface 26 of the nozzle head 20. As shown in FIG. 4 and FIG. 5B, the first discharge port 23 a may protrude forward from the tip surface 26. The second discharge port 24 a may protrude forward from the tip surface 26. The first discharge port 23a is formed as an opening orthogonal to the first nozzle axis B1, and the second discharge port 24a is formed as an opening orthogonal to the second nozzle axis B2. The tip surface 26 is substantially parallel to the first discharge port 23a and the second discharge port 24a. Note that both or one of the first discharge port 23a and the second discharge port 24a may be in the same position as the front end surface 26 in the axis L direction, or may be in a position slightly retracted from the front end surface 26. Good. In any case, the first discharge port 23a and the second discharge port 24a are exposed from the tip surface 26 and face the outside (front). “Front” is based on the discharge direction.

  As shown in FIG. 5A and FIG. 5B, a cylindrical first portion is provided between the first nozzle 23 and the nozzle head 20, that is, between the first nozzle 23 and the first through hole 27. One flow path (gas flow path) 31 is formed. A cylindrical second flow path (gas flow path) 32 is formed between the second nozzle 24 and the nozzle head 20, that is, between the second nozzle 24 and the second through hole 28. The first flow path 31 and the second flow path 32 are continuous with the flow path formed between the tubular portion 17 and the first liquid supply pipe 21 and the second liquid supply pipe 22. The compressed gas that has passed through the tubular portion 17 branches in the middle and passes through these two first flow paths 31 and second flow paths 32. At the tips of the first flow path 31 and the second flow path 32, annular injection ports are respectively formed.

  The arrangement / structure of the first nozzle 23 with respect to the first flow path 31 and the arrangement / structure of the second nozzle 24 with respect to the second flow path 32 are symmetric with respect to an imaginary plane that passes through the axis L and is perpendicular to the width direction. The arrangement / structure of the first nozzle 23 relative to the first flow path 31 and the arrangement / structure of the second nozzle 24 relative to the second flow path 32 may not be symmetrical with respect to the virtual plane. These may be asymmetric depending on the mode of atomization and mixing of the two liquids.

  As shown in FIG. 4, in the applicator device 2 of the present embodiment, the distal end surface 26 is provided with a shielding wall portion 40 that protrudes from the distal end surface 26 in the axis L direction. The shielding wall 40 is located between the first discharge port 23a and the second discharge port 24a. The shielding wall portion 40 has a plate shape and extends in the height direction (vertical direction in FIG. 6B) perpendicular to both the axis L direction and the width direction. The tip surface 26 of the nozzle head 20 is a circular flat surface and extends in a direction perpendicular to the axis L. As shown in FIG. 6A, the shielding wall portion 40 protrudes in the direction of the axis L (forward) from the entire surface of the distal end surface 26. The shielding wall 40 protrudes (forward) in the direction of the axis L from the first discharge port 23a and the second discharge port 24a.

  As shown in FIGS. 4, 5 (a), and 6 (b), the shielding wall 40 crosses the center of the distal end surface 26 up and down. That is, the shielding wall portion 40 extends to both ends in the height direction on the distal end surface 26. The length in which the tip 40a of the shielding wall 40 protrudes from the tip surface 26 is constant in the height direction. The width (thickness) of the shielding wall portion 40 is constant in the height direction and the axis L direction. The upper end 40 b and the lower end 40 c of the shielding wall portion 40 are continuous with the outer peripheral surface of the peripheral wall portion 25. There is no step between the upper end 40 b and the lower end 40 c of the shielding wall 40 and the outer peripheral surface of the peripheral wall 25.

  As shown in FIG. 4 and FIG. 5A, the tip surface 26 is divided into two parts by the shielding wall 40. The front end surface 26 includes a first portion 26a on the first nozzle 23 side and a second portion 26b on the second nozzle 24 side. As described above, since the shielding wall portion 40 extends to both ends in the height direction on the front end face 26, the first portion 26a and the second portion 26b are completely separated. The shielding wall 40 is a partition wall provided between the first discharge port 23a and the second discharge port 24a.

  As shown in FIG. 10 (a), the shielding wall 40 is provided so as not to hinder spraying during spraying. That is, the shielding wall portion 40 protrudes in the direction of the axis L from both the first discharge port 23a and the second discharge port 24a, but the first atomization region R1 of the main agent and the second atomization region R2 of the curing agent. Are provided so as not to overlap. In other words, the shielding wall part 40 is formed in the height (projection length) which does not produce the rebound of compressed gas and the atomized coating material.

  The first atomization region R1 is formed along the first nozzle axis B1 with the first discharge port 23a as the top. The second atomization region R2 is formed along the second nozzle axis B2 with the second discharge port 24a as the top. 1st atomization area | region R1 and 2nd atomization area | region R2 are substantially cone shape, for example. The shapes and sizes of the first atomization region R1 and the second atomization region R2 are appropriately adjusted depending on the structure of the first nozzle 23 and the first flow path 31, and the second nozzle 24 and the second flow path 32. obtain. In addition, the distance from the front end surface 26 to the living body X is, for example, about 3 to 5 cm.

  On the other hand, after spraying, the shielding wall 40 divides the tip surface 26 into a region on the first discharge port 23a side and a region on the second discharge port 24a side, so that the main agent and the curing agent are mixed on the tip surface 26. It is prevented from being done.

  In the applicator 2 of the present embodiment, the main agent discharged from the first discharge port 23a and the curing agent discharged from the second discharge port 24a are atomized by the compressed gas and then mixed to be applied. Is done. When the application is finished, the supply of compressed gas is stopped. On the other hand, even after the spraying is completed, the main agent and the curing agent can be slightly discharged from the first discharge port 23a and the second discharge port 24a. Since the shearing force cannot be obtained due to the stop of the compressed gas, the main agent and the curing agent can adhere to the tip surface 26 as droplets. However, even if the main agent and the curing agent adhere to the tip surface 26 of the nozzle head 20, the shielding wall 40 restricts movement of one liquid to the other liquid side. That is, the shielding wall 40 restricts the main agent or the curing agent from moving between the first portion 26 a and the second portion 26 b beyond the shielding wall portion 40 on the distal end surface 26. Therefore, the applicator 2 includes the first discharge port 23a and the second discharge port 24a on the distal end surface 26 after spraying by the shielding wall portion 40 provided between the first discharge port 23a and the second discharge port 24a. In the vicinity thereof, mixing of the two liquids is prevented. The first flow path 31 and the second flow path 32 are formed around the first nozzle 23 and the second nozzle 24, and it is necessary to separately form the bottom surface and the back surface on the tip surface as in the above-mentioned Patent Document 2. Absent. That is, the front end surface 26 may be one surface extending in substantially the same direction. Since the shielding wall part 40 should just be provided in such a front end surface 26, a structure is simple and it is small.

  In a conventional applicator that does not have a shielding wall, if the device is left for a while after spraying, the liquid leaks from the tip of the nozzle (tube), and the two liquids that have become droplets are mixed at the tip. , Sticking occurred. Once sticking occurred at the tip, the tip had to be cleaned in order to use the instrument again. In the applicator device 2 of the present embodiment, the first discharge port 23a and the second discharge port 24a are close to each other to achieve miniaturization. However, since the shielding wall portion 40 is provided between them, the first discharge port 23a and the second discharge port 24a are fixed. Can be prevented. Therefore, even when spraying and stopping are repeated, no sticking occurs between them, and cleaning or the like is unnecessary. The operator can repeat spraying and stopping without worrying about changes in the spray state due to sticking.

  And since the shielding wall part 40 does not overlap with 1st atomization area | region R1 and 2nd atomization area | region R2, the shielding wall part 40 does not become a hindrance at the time of spraying.

  Moreover, since the shielding wall part 40 is extended to the both ends of the height direction of the front end surface 26, it is prevented reliably that two liquids are mixed after spraying.

  The second embodiment will be described with reference to FIGS. 8, 9A, 9B, and 10B. The applicator device 2 of the second embodiment has a first nozzle 23A and a second nozzle 24A that are angled rather than parallel. As shown in FIG. 9B, the first nozzle axis B1 passing through the center of the first nozzle 23A and the second nozzle axis B2 passing through the center of the second nozzle 24A are both at an angle with respect to the axis L. (Inclined). The first nozzle 23A and the second nozzle 24A are spaced apart from each other in the width direction, but the first nozzle axis B1 and the second nozzle axis B2 are not parallel, but at the tip side, that is, the first discharge port 23a and the second discharge port. As they go to 24a, they approach each other. The first nozzle axis B1 and the second nozzle axis B2 are located on the same plane extending in the axis L direction and the width direction. An angle θ1 formed by the first nozzle axis B1 with respect to the axis L is an acute angle. An angle θ2 formed by the second nozzle axis B2 with respect to the axis L is an acute angle.

  The first nozzle axis B1 and the second nozzle axis B2 intersect in front of the nozzle head 20. The angle formed by the first nozzle axis B1 and the second nozzle axis B2 is the sum of the angle θ1 and the angle θ2. In other words, the angle formed by the first nozzle axis B1 and the second nozzle axis B2 is twice the angle θ1 (angle θ2) when they are equal, which is also an acute angle.

  Thus, the first nozzle 23A and the second nozzle 24A are arranged non-parallel and have a V shape when viewed from the direction perpendicular to both the axis L direction and the width direction. The first flow path 31 and the first nozzle 23A, and the second flow path 32 and the second nozzle 24A are symmetric with respect to a virtual plane that passes through the axis L and is perpendicular to the width direction.

  The tip surface 26A has a concave shape. The tip surface 26A may have the same shape as a part of the cylindrical surface, or may have the same shape as a part of the spherical surface or the conical surface. The first discharge port 23a is formed as an opening orthogonal to the first nozzle axis B1, and the second discharge port 24a is formed as an opening orthogonal to the second nozzle axis B2. The tip surface 26A is substantially parallel to the first discharge port 23a and the second discharge port 24a.

  A shielding wall portion 40A that protrudes in the direction of the axis L and crosses up and down is provided at the center of the tip surface 26A. The width (thickness) of the shielding wall 40A is constant in the height direction, but decreases in the direction of the axis L in the direction of the tip 40a. In other words, the first side surface 40d on the first discharge port 23a side and the second side surface 40e on the second discharge port 24a side are non-parallel and approach each other toward the tip 40a. The shielding wall portion 40A has a tapered shape corresponding to the angled first nozzle 23A and second nozzle 24A. The shield wall 40A has the same configuration as the shield wall 40 in other respects.

  As shown in FIG. 10B, the shielding wall 40A is provided so as not to hinder spraying during spraying. That is, the shielding wall 40A protrudes in the direction of the axis L from both the first discharge port 23a and the second discharge port 24a, but the first atomization region R1 of the main agent and the second atomization region R2 of the curing agent. Are provided so as not to overlap. In other words, the shielding wall 40A is formed at a height (protrusion length) that does not cause the compressed gas and the atomized coating material to rebound.

  Also according to the second embodiment, the same operations and effects as the first embodiment are achieved. That is, the two liquids are prevented from being mixed after spraying by the shielding wall portion 40A provided between the first discharge port 23a and the second discharge port 24a. Further, the tip surface 26A may be one surface extending in substantially the same direction. Since it is only necessary to provide the shielding wall portion 40A on such a tip surface 26A, the configuration is simple.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. For example, in the second embodiment, the angle θ1 and the angle θ2 that are inclined with respect to the axis L may be different. The first nozzle axis B1 and the second nozzle axis B2 do not necessarily intersect. That is, the first nozzle axis B1 and the second nozzle axis B2 may not be located on the same plane. The first flow path 31 and the first nozzle 23 and the second flow path 32 and the second nozzle 24 may be asymmetric with respect to a virtual plane that passes through the axis L and is perpendicular to the width direction.

  The shielding wall part 40 is not restricted to the case where it extends to both ends of the front end surface in the height direction, but may extend to any one end in the height direction. That is, the first portion 26a and the second portion 26b may be connected at either one of the upper and lower ends. For example, if the shielding wall portion 40 extends to the lower end of the front end surface, it is considered that liquid dripping is likely to occur on the lower end side, which is particularly effective for preventing sticking. The shielding wall part 40 may be provided only in a part in the height direction between the first discharge port 23a and the second discharge port 24a without extending to both ends of the front end surface in the height direction. That is, the first portion 26a and the second portion 26b may be connected at the upper and lower ends. Even in that case, mixing and fixing of the two liquids can be prevented by the shielding wall 40.

  The shielding wall 40 is located at the same position in the axis L as the first discharge port 23a and the second discharge port 24a, or a position retracted in the direction of the axis L from the first discharge port 23a and the second discharge port 24a (front side). ). The shielding wall part 40 protrudes in the direction of the axis L from the first discharge port 23a and the second discharge port 24a, and when the highest priority is to prevent sticking, the shielding wall 40 overlaps the atomization regions of the first liquid and the second liquid. It may be protruding. Even in this case, the first liquid can hit the first surface of the shielding wall 40 and the second liquid can hit the second surface of the shielding wall 40, but mixing and adhering of the two liquids can be prevented.

  The flow path of the compressed gas is not limited to the case where the first nozzle 23 and the second nozzle 24 are provided separately, and a single (common) flow path may be provided. In that case, the shielding wall part 40 may be provided between the 1st discharge port 23a and the 2nd discharge port 24a so that the injection port of the single flow path formed in the front end surface may be crossed.

  The front end face 26 is not limited to being orthogonal to the axis L as in the first embodiment. The tip surface 26 may be inclined with respect to the axis L. The shape of the front end surface 26 is not limited to a flat surface, and irregularities and steps may be provided as appropriate.

  The gas used for the compressed gas is not limited to air, and may be, for example, nitrogen gas or carbon dioxide gas. The present invention can be applied not only to chest cavity surgery but also to other locations and other types of surgery, such as laparotomy.

  DESCRIPTION OF SYMBOLS 1 ... Coating device, 2 ... Coating tool, 20 ... Nozzle head, 21 ... 1st liquid supply pipe, 22 ... 2nd liquid supply pipe, 23, 23A ... 1st nozzle, 23a ... 1st discharge port, 24, 24A ... 2nd nozzle, 24a ... 2nd discharge port, 26, 26A ... tip surface, 31 ... 1st flow path (gas flow path), 32 ... 2nd flow path (gas flow path), 40, 40A ... shielding wall part, L ... axis, R1 ... first atomization region, R2 ... second atomization region, X ... living body.

Claims (3)

An applicator for atomizing and mixing the first liquid and the second liquid using compressed gas,
A first liquid supply pipe to which the first liquid is supplied;
A second liquid supply pipe to which the second liquid is supplied;
A first nozzle that is provided at a tip of the first liquid supply pipe and discharges the first liquid from a first discharge port;
A second nozzle that is provided at a tip of the second liquid supply pipe and discharges the second liquid from a second discharge port;
The positions of the first nozzle and the second nozzle are defined, the gas injection ports ejected from the outer circumferences of the first nozzle and the second nozzle are defined, and formed around the first nozzle and the second nozzle. A cylindrical nozzle head including a gas flow path through which the compressed gas passes,
The first nozzle and the second nozzle are spaced apart from each other in the width direction perpendicular to the axial direction of the nozzle head, and the first discharge port and the second discharge port are connected to the axis of the nozzle head. It is exposed from the tip surface that intersects
The applicator, wherein the front end surface is provided with a shielding wall portion that is located between the first discharge port and the second discharge port and protrudes from the front end surface in the axial direction.   The said shielding wall part protrudes in the said axial direction rather than any of the said 1st discharge port and the said 2nd discharge port, The said 1st liquid formed using each of the said 1st discharge port and the said 2nd discharge port as a top part And the applicator of Claim 1 provided so that it may not overlap in the atomization area | region of the said 2nd liquid. The applicator according to claim 1 or 2, wherein the shielding wall portion extends to both ends in a height direction perpendicular to both the axial direction and the width direction on the distal end surface.

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