JP2012065982A - Liquid medicine applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid medicine applicator for more reliably closing a gap occurring in an insertion portion between a long insertion body and a living tissue.SOLUTION: The liquid medicine applicator 10 includes: a syringe 12 having a liquid storage portion 22b filled with liquid medicine L for covering an insertion portion 20 into a living tissue 18 of an insertion tube 16 of a catheter or the like; and a nozzle 14 connected to an outflow port 22a at the tip of the syringe 12. The nozzle 14 has an arm portion 32 for encircling at least a part of an outer peripheral surface of the insertion tube 16 and has, on the arm portion 32, a discharge hole 36 discharging the liquid medicine L filled in the liquid storage portion 22b, to the outer peripheral surface of the insertion tube 16. The arm portion 32 is provided with a lock structure 40 provided at an opening portion 38 for making the insertion tube 16 pass to the inward and outward of the arm portion 32 and blocking passage of the insertion tube 16 at the opening portion 38.

Description

  The present invention relates to a liquid agent applicator for applying a liquid agent that covers an insertion portion between a long inserted body such as a catheter and a living tissue.

  Long medical inserts, for example, various catheters such as vascular catheters, urinary catheters and epidural catheters, indwelling drains, peritoneal dialysis tubes, or insertion parts of Huber needles, or living bodies When an implantable medical device cable or a tracheostomy cannula or the like (hereinafter referred to as an insertion tube) is inserted and placed in the body, there is a gap in the insertion portion of the insertion tube into a living tissue (for example, the body surface). In this gap, bacteria (for example, bacteria resident in the skin) and dirt may invade, and infection or inflammation may occur.

  Therefore, in general, in order to prevent the above infections and inflammation, a treatment for covering the periphery of the insertion portion with a dressing agent, a treatment for applying a patch impregnated with an antibacterial agent around the insertion portion, and the like are performed. (For example, see Patent Documents 1 and 2).

JP-A-9-94299 Japanese Patent No. 3046623

  A certain effect can be obtained for the prevention of infectious diseases and inflammation by performing a treatment for attaching the dressing agent and patch to the insertion portion and the periphery thereof. However, since the method of applying such a dressing or patch is a treatment only covering the periphery of the insertion portion between the insertion tube and the living tissue from above, it is difficult to completely close the gap generated in the insertion portion.

  The present invention has been made in consideration of such a conventional problem, and is a liquid agent applicator that can more reliably close a gap generated in an insertion portion between a long insertion body and a living tissue. The purpose is to provide.

  The liquid agent applicator according to the present invention is provided on the arm portion that can surround at least a part of the outer peripheral surface of a long insertion body that is inserted into a biological tissue, and the biological tissue of the insertion body is connected to the biological tissue. A discharge hole for discharging the liquid agent for covering the insertion portion toward the outer peripheral surface of the insert, and an opening formed in the arm to allow the insert to pass inside and outside the arm And a lock structure that inhibits passage of the insert through the section.

  According to such a configuration, by discharging the liquid agent from the discharge hole provided in the arm portion toward the outer peripheral surface of the insert surrounded by the arm portion, the liquid agent is applied to the insertion portion and the periphery thereof, A gap generated in the insertion portion can be reliably covered and closed. Furthermore, by providing the arm portion with a lock structure that inhibits the passage of the insert through the opening, it is possible to reliably prevent the insert from being disposed in the opening surrounded by the arm, from the opening. The liquid agent can be applied more reliably and stably.

  The liquid storage unit filled with the liquid agent and the arm unit, the arm unit having a nozzle capable of circulating the liquid agent from the liquid storage unit, the liquid agent filled in the liquid storage unit It is good also as a structure discharged from the discharge hole of a nozzle.

  The lock structure has the opening having a width smaller than the outer diameter of the insert so that the insert disposed in the region surrounded by the arm can be prevented from coming off from the opening. Good.

  In this case, if the arm portion has flexibility capable of expanding and deforming the opening portion, the insertion body can easily pass through the opening portion to the inside and outside of the arm portion.

  A pair of end portions constituting the opening of the arm portion is provided with an engaging portion that connects both ends, and the engaging state of the engaging portion cannot be released in the radial direction of the arm portion. Even when the insert presses the inner surface of the arm portion, the engagement state of the engagement portion is not released, and one layer from the opening of the insert disposed in the region surrounded by the arm portion. Reliable stopper can be secured.

  If the arm portion has opposing portions that overlap and face each other in the vicinity of the pair of end portions of the arm portion that constitutes the opening portion, the opening portion is locked by the opposing portion. It is possible to prevent the insert disposed in the region to be removed.

  The lock structure may include the opening having a width equal to or larger than the outer diameter of the insert, and a flexible valve member provided in the opening. If it does so, it can aim at the removal from the opening part of the insertion body arrange | positioned in the area | region enclosed by the arm part by this valve member.

  The arm portion may have a pair of end portions constituting the opening portion arranged to face each other, and the lock structure may include a passage formed between the pair of end portions. Further, the arm portion has a facing portion that overlaps and faces each other in the vicinity of a pair of end portions constituting the opening, and the lock structure has a passage formed between the facing portions. Also good. Further, the lock structure may include a passage in which a pair of end portions constituting the opening of the arm portion intersect each other in a direction overlapping in a plan view with a space equal to or larger than the outer diameter of the insert. Good. Then, when the insert is passed through the passage, it is necessary to move the liquid applicator along the passage. Therefore, the insert from the opening of the insert disposed in the region surrounded by the arm portion is prevented. Is possible.

  In this case, the passage may be formed in a direction that intersects the inflow direction of the liquid agent from the liquid storage portion to the nozzle. Then, since the operation direction of the liquid applicator when passing the insert through the passage is complicated, it is possible to prevent the insert from being opened from the opening of the insert disposed in the area surrounded by the arm. It becomes.

  According to the present invention, the liquid agent for covering the insertion portion of the insert body into the living tissue is discharged from the discharge hole provided in the arm portion toward the outer peripheral surface of the insert body surrounded by the arm portion, The liquid agent can be smoothly applied to the insertion portion of the insertion body into the living tissue and the periphery thereof, and the gap generated in the insertion portion can be reliably covered and closed. Moreover, by providing the arm portion with a lock structure that inhibits the passage of the insert through the opening, it is possible to reliably prevent the insert from being placed in the opening surrounded by the arm. Thus, the liquid agent can be applied more reliably and stably.

It is a partial exploded perspective view of the liquid medicine applicator concerning one embodiment of the present invention. It is the fragmentary sectional view which expanded the front end side of the liquid agent applicator shown in FIG. 3A is a partially omitted plan view in which the distal end side of the liquid agent applicator shown in FIG. 1 is enlarged, and FIG. 3B shows the operation of inserting the insertion tube into the arm portion of the nozzle in the liquid agent applicator shown in FIG. FIG. FIG. 10 is a partially omitted plan view showing another example of an operation of inserting the insertion tube into the arm portion of the nozzle in the liquid medicine applicator shown in FIG. 1. FIG. 5A is an explanatory view showing a state in which the liquid agent is applied to the insertion portion of the insertion tube into the living tissue with the applicator shown in FIG. 1, and FIG. 5B is a plan view of the applicator shown in FIG. 5A. FIG. 5C is an explanatory diagram illustrating a state in which the liquid agent is applied from the state illustrated in FIG. 5A and the periphery of the insertion portion is covered with the liquid agent. FIG. 6A is a side cross-sectional view of a configuration example in which a lock structure is provided at a connection portion between a syringe and a nozzle, and FIG. 6B is a side cross-sectional view in which the lock structure shown in FIG. 6A is in a locked state. FIG. 7A is a partially omitted plan view of the nozzle according to the first modification, and FIG. 7B is a partial view showing the operation of inserting the insertion tube into the region surrounded by the arm portion of the nozzle shown in FIG. 7A. FIG. It is a partially-omission top view of the nozzle which concerns on a 2nd modification. FIG. 9A is a partially omitted plan view of a nozzle according to a third modification, and FIG. 9B is a partial view showing an operation of inserting an insertion tube into a region surrounded by the arm portion of the nozzle shown in FIG. 9A. FIG. FIG. 10 is a partially omitted plan view of a nozzle according to a fourth modification. FIG. 11A is a partially omitted plan view of a nozzle according to a fifth modification, and FIG. 11B is a partial view showing an operation of inserting an insertion tube into a region surrounded by the arm portion of the nozzle shown in FIG. 11A. FIG. FIG. 12A is a partially omitted plan view of a nozzle according to a sixth modification, and FIG. 12B is a partial view showing an operation of inserting an insertion tube into a region surrounded by an arm portion of the nozzle shown in FIG. 12A. FIG. It is a partially omitted plan view of a nozzle according to a seventh modification. It is a partially omitted plan view of a nozzle according to an eighth modification. It is a partially omitted perspective view of a nozzle according to a ninth modification. 16A is a partially omitted plan view of the nozzle shown in FIG. 15, and FIG. 16B is a partially omitted front view of the nozzle shown in FIG. 16A. It is a perspective view of the liquid agent applicator which concerns on another structural example of the liquid agent applicator shown in FIG. 18A is a plan view of a liquid agent applicator according to still another configuration example of the liquid agent applicator shown in FIG. 1, and FIG. 18B is a side view of the liquid agent applicator shown in FIG. 18A.

  Hereinafter, preferred embodiments of the liquid applicator according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a partially exploded perspective view of a liquid agent applicator 10 according to an embodiment of the present invention, and FIG. 2 is an enlarged partial cross-sectional view of the distal end side of the liquid agent applicator 10 shown in FIG.

  A liquid agent applicator 10 according to the present embodiment (hereinafter also simply referred to as “applicator 10”) includes a syringe 12 filled with the liquid agent L and a nozzle 14 connected to the tip of the syringe 12. Is a device for applying (administering, discharging, and injecting) from a nozzle 14 to a target site. The liquid L is a drug or the like for covering the insertion portion 20 of the insertion tube 16 that is a long insertion body made of a catheter, drain, cable, or the like into the living tissue 18 (for example, the body surface) (FIG. 5A). That is, the applicator 10 is a medical instrument for applying the liquid L from the tip nozzle 14 to the insertion portion 20 and its periphery. The insertion portion 20 of the insertion tube 16 into the living tissue 18 may be other than the body surface, for example, inside the body.

  As the liquid L, for example, a liquid containing a sealant (sealing material, adhesive) containing cyanoacrylate or an antibacterial agent such as chlorhexidine and having sufficient viscosity may be used. The liquid is preferably hardened after ejection, and preferably has a suitable adhesiveness with living tissue. Specific examples of the material include a gel mainly composed of polyethylene glycol and a polysaccharide gel, and a method of curing by mixing two liquids may be used.

  In the following description, the left side (syringe 12 side) in FIGS. 1 and 2 is called the “base end (rear end)” side, and the right side (nozzle 14 side) is called the “front end” side.

  As shown in FIGS. 1 and 2, the syringe 12 is fluid-tightly slid within the outer cylinder 22 and an outer cylinder (cylinder) 22 provided with an outlet 22 a protruding in a tapered shape at the tip, A gasket 24 that defines a liquid storage portion 22b filled with the liquid L is attached to the tip, and includes a pusher (plunger rod) 26 that can move in the front-rear direction (axial direction).

  The nozzle 14 has a substantially cylindrical base portion 30 having an inlet 28 that is tapered to the outlet 22a of the syringe 12 at the base end surface, and the insertion tube 16 in plan view (see FIG. 2) from the distal end of the base portion 30. And an arm portion (ring portion) 32 formed in, for example, a C-ring shape, a V-shape, or a U-shape (FIG. 2 illustrates a C-ring configuration). Have. A nozzle channel 34 that extends from the injection port 28 and extends in the axial direction is formed inside the base portion 30, and the nozzle channel 34 also extends inside the arm portion 32 (FIG. 2). reference). Further, a plurality (9 in this embodiment) of discharge holes 36 branched from the nozzle flow path 34 are formed in the inner surface (inner peripheral surface) 32a of the arm portion 32 formed in a substantially circular shape. .

  As shown in FIG. 2, all the discharge holes 36 in the nozzle 14 are formed in the discharge direction directed to the center of the circle constituting the arm portion 32, and are provided at equal intervals along the circumferential direction of the arm portion 32. However, it is needless to say that the discharge direction and the arrangement interval of the discharge holes 36 can be appropriately changed.

  As shown in FIGS. 1 and 2, the arm portion 32 has an opening (notch portion) for passing the insertion tube 16 to the inside and the outside of the arm portion 32 on the distal end side in the axial direction of the base portion 30. A slit) 38 is provided. The opening 38 has an inclined shape whose width (distance between the inner surfaces) increases toward the distal direction.

  As shown in FIG. 3A, the width W of the opening 38 (at least the minimum width W of the openings 38) is set smaller than the outer diameter D of the insertion tube 16 to be applied (W <D ), The insertion tube 16 cannot be inserted into the arm portion 32 through the opening 38 as it is.

  Therefore, in the nozzle 14, the entire arm portion 32 or a portion near the opening 38 is formed of a flexible material. Examples of the flexible material include various elastomers such as styrene-butadiene rubber, butyl rubber, isoprene rubber, silicone rubber, and polyester.

  Therefore, as shown in FIG. 3B, when the opening 38 is pressed against the insertion tube 16, the opening 38 is expanded and deformed, and the insertion tube 16 passes through the opening 38 and is surrounded by the arm portion 32. (See FIG. 2). Further, when the insertion tube 16 is inserted into a region surrounded by the arm portion 32, the opening portion 38 immediately returns to the original width W. Therefore, the opening portion 38 is not expanded unless the arm portion 32 is expanded again. The opening 38 defined by the relationship of W <D constitutes a lock structure 40 that inhibits insertion / removal of the insertion tube 16 through the opening 38. Yes.

  In this case, the width W of the opening 38 may be set to zero, that is, the opening 38 may be completely closed. However, when the opening 38 is configured to be completely closed, the opening 38 If a slight gap is provided in the outer peripheral portion of the portion 38, the outer peripheral surface of the insertion tube 16 can be easily pushed through the gap, and the arm portion 32 can be easily expanded.

  Even when the arm portion 32 is formed of a material having no flexibility or a material having flexibility but relatively high hardness, the insertion tube 16 is formed of a flexible material having flexibility. In such a case, as shown in FIG. 4, the insertion tube 16 can be passed through the opening 38 while being slightly deformed. That is, in the lock structure 40, the arm portion 32 does not necessarily have flexibility, and it is sufficient that at least one of the arm portion 32 or the insertion tube 16 has flexibility.

  The material of the nozzle 14 is not particularly limited. For example, a resin such as polypropylene, polyethylene, polyvinyl chloride, cyclic polyolefin, polystyrene, polycarbonate, acrylic resin, polyamide, or the like may be used. The outer cylinder 22 and the pusher 26 of the syringe 12 may be used. The same applies to. In addition, about the arm part 32 which comprises the lock structure 40 among the nozzles 14, it is desirable to form with a flexible material as mentioned above. For the gasket 24, various elastomers such as styrene-butadiene rubber, butyl rubber, isoprene rubber, silicone rubber, and polyester elastomer may be used.

  The nozzle 14 has, for example, a length from the base end of the base portion 30 to the tip of the arm portion 32 of about 10 mm to 50 mm, preferably about 20 mm to 30 mm, and the inner diameter of the inner surface 32a of the arm portion 32, that is, The outer diameter of the region surrounded by the arm portion 32 depends on the outer diameter of the insertion tube 16, but is, for example, about 5 mm to 30 mm, preferably about 10 mm to 20 mm. The width (interval) of the opening 38 is The diameter is about 3 mm to 30 mm, preferably about 3 mm to 20 mm, and the discharge hole 36 has a diameter of about 0.5 mm to 3 mm, preferably about 1 mm to 2 mm. Of course, each of these dimensions and materials can be set optimally as appropriate depending on the application and specifications of the applicator 10, the type of the liquid L, and the like.

  Next, an example of a liquid agent application method using the applicator 10 configured as described above will be described with reference to FIGS. 5A to 5C. FIG. 5A is an explanatory view showing a state in which the liquid L is applied to the insertion portion 20 of the insertion tube 16 into the living tissue 18 by the applicator 10 shown in FIG. 1, and FIG. 5B is an application shown in FIG. 5A. FIG. 5C is an explanatory view showing a state in which the liquid L is applied from the state shown in FIG. 5A and the periphery of the insertion portion 20 is covered with the liquid L. FIG.

  As the insertion tube 16 which is a long insertion body, for example, various catheters such as blood vessel catheters, urinary catheters and epidural catheters, indwelling drains, peritoneal dialysis tubes, or insertion parts of Huber needles Or, a cable of an implantable medical device, an incision cannula, or the like can be given. In a state where such an insertion tube 16 is inserted into the biological tissue 18 (for example, the body surface), as shown in FIG. 5A, the insertion tube 16 is interposed between the insertion tube 16 and the biological tissue 18 in the insertion unit 20. A gap G is formed along the outer peripheral surface. 5A to 5C, the gap G is slightly exaggerated for easy understanding, but the actual gap G is narrower than that illustrated in FIGS. 5A to 5C. It is a minute interval.

  In this way, the gap G generated in the insertion portion 20 may be invaded by bacteria and dirt that are permanently present on the surface of the living tissue 18 (skin surface, etc.). In order to prevent infection and inflammation, It is preferable to block the gap G more reliably. However, since the conventional dressing described above has a configuration in which a film is only attached to the periphery of the insertion portion, it is difficult to completely close the gap G generated in the insertion portion. In addition, wrinkles or the like may occur in the attached film, and in this case, bacteria may move through the gaps (spaces) generated by the wrinkles and the like, and may enter the gap G.

  Therefore, in the present embodiment, the liquid gap L contains a sealant containing cyanoacrylate or an antibacterial agent such as chlorhexidine in order to reliably close the gap G and prevent the occurrence of the gap due to wrinkles or the like. In addition, a liquid agent having a sufficient viscosity is used, and a solution L alone or a mixture thereof is preliminarily filled in the liquid storage part 22b of the syringe 12, or is filled immediately before the procedure. deep.

  Next, after removing the cap 39 (see FIG. 1) of the outlet 22a of the syringe 12 and opening the outlet 22a, the nozzle 14 is attached (see FIG. 2), and after priming, FIG. 5A and FIG. 5B, the insertion tube 16 is inserted into the arm portion 32 through the opening 38, and the insertion tube 16 is disposed so as to surround the inner surface 32a of the arm portion 32. That is, the insertion tube 16 is inserted inside the ring of the arm portion 32.

  In this case, since the nozzle 14 includes the lock structure 40 in which the width W of the opening 38 is set smaller than the outer diameter D of the insertion tube 16, when the insertion tube 16 is disposed inside the arm portion 32, By pressing the insertion tube 16 against the opening 38, the opening 38 of the arm portion 32 having flexibility is pushed and expanded, and the insertion tube 16 passes through the opening 38 and is surrounded by the arm portion 32. Can be arranged.

  Instead of the cap 39, for example, a resin film (not shown) is provided at the outlet of the outlet 22a, and the film is opened with a puncture needle (not shown) at the start of use, or the nozzle 14 You may comprise so that it may open by the puncture needle in which the flow path provided in the path | route 34 was formed.

  The installation position of the nozzle 14 on the insertion tube 16 depends on the type and size of the insertion tube 16 and the applicator 10, the size of the gap G in the insertion portion 20, and the like. The height position may be set to 20 mm, preferably about 10 mm (h = 10 mm in FIG. 5A). In this case, the inner diameter of the inner surface 32a of the arm portion 32 is preferably slightly larger than the outer diameter of the target insertion tube 16, and is preferably set to about 1.3 to 2 times, for example.

  Subsequently, by pushing the pusher 26 of the syringe 12, as shown in FIG. 5B and FIG. 5C, the liquid agent L is discharged from the discharge holes 36 of the nozzle 14 toward the insertion tube 16 all at once. The liquid agent L descends along the outer peripheral surface of the insertion tube 16 and reaches the insertion portion 20. Thereby, the liquid L is appropriately applied to the insertion portion 20 and the periphery thereof, and the gap G is reliably covered and closed. In addition, the liquid L of the applicator 10 can be used in combination with, for example, the above-mentioned dressing, so that even if wrinkles are generated in the dressing, it is reliably prevented that bacteria enter the body from the gap G. The

  For example, when a sealant containing cyanoacrylate is used as the liquid agent L, the sealant is solidified at the insertion portion 20 and its peripheral portion, so that the gap G can be reliably closed, and the insertion tube 16 is inserted into the insertion portion 20. It can also be fixed. On the other hand, for example, when a liquid agent containing an antibacterial agent such as chlorhexidine and having a sufficient viscosity is used as the liquid agent L, the liquid agent L is held at the insertion portion 20 and its peripheral portion, and the gap G is reliably blocked. be able to. When the liquid agent is used, it does not solidify around the insertion portion 20 unlike the sealant described above, but in general, the width of the gap G generated between the insertion tube 16 and the living tissue 18 is extremely narrow. Therefore, if the liquid agent L has a predetermined viscosity, the gap G can be reliably closed by the surface tension without solidifying.

  As described above, in the applicator 10 according to the present embodiment, the liquid L filled in the liquid storage part 22b of the syringe 12 is discharged from the discharge hole 36 opened in the inner surface 32a of the arm part 32 to the outer peripheral surface of the insertion tube 16. The gap G can be reliably covered and closed by discharging the liquid and applying the liquid L to the insertion portion 20 and its periphery. Accordingly, it is possible to reliably prevent bacteria and dirt from entering the gap G formed in the insertion portion 20 between the insertion tube 16 such as a catheter and the living tissue 18, and infectious diseases in the insertion portion 20 Inflammation can be prevented.

  The nozzle 14 has an arm portion 32 that can surround the insertion tube 16, and a discharge hole 36 for the liquid agent L is formed in the inner surface 32 a of the arm portion 32. Therefore, at the time of application of the liquid L, the liquid L can be reliably discharged from the discharge hole 36 to the outer peripheral surface of the insertion pipe 16 at a stroke while holding the insertion pipe 16 inside the arm portion 32, and high operability. Reliable application is possible. That is, since each discharge hole 36 is formed in the inner surface 32a of the arm portion 32, the liquid agent L can be inserted into the insertion tube simply by holding (arranging) the insertion tube 16 inside (inside) the arm portion 32. 16 can be reliably and substantially discharged onto the outer peripheral surface. A plurality of discharge holes 36 are not provided as described above, and may be, for example, only one discharge hole 36 having a certain size. However, the liquid agent L is more evenly distributed with respect to the outer peripheral surface of the insertion tube 16. In order to apply, it is preferable to provide three or more discharge holes 36 that are evenly arranged at substantially equal intervals in the circumferential direction of the arm portion 32.

  At this time, in the nozzle 14, the width W of the opening 38 that allows the insertion tube 16 to pass inside and outside the arm portion 32 is configured to be smaller than the outer diameter D of the insertion tube 16, so that the insertion tube at the opening 38 is formed. The lock structure 40 which blocks passage of 16 is constructed. Thereby, when inserting the insertion tube 16 into the inside of the arm portion 32, it is necessary to push the arm portion 32 wide, but after the insertion tube 16 is arranged in the region surrounded by the arm portion 32, The opening 38 immediately returns to the original width W, and the opening 38 is locked. Therefore, when applying the liquid agent L, it is possible to reliably prevent the insertion tube 16 installed inside the arm portion 32 from being accidentally pulled out from the opening 38, and more reliably and stably applying the liquid agent L. It can be carried out.

  As shown in FIGS. 2, 3A, and 3B, the opening 38 opens in the distal direction of the applicator 10, that is, on the axis. For this reason, when the user sets the applicator 10 to the insertion tube 16, for example, the user can easily pass the insertion tube 16 through the opening 38 while holding the syringe 12 portion with one hand. Operability can be obtained.

  Moreover, in the nozzle 14, the opening 38 is formed as an inclined surface whose width increases from the inner surface 32 a side of the arm portion 32 toward the outer surface side. For this reason, the insertion tube 16 can be more easily inserted into the region surrounded by the arm portion 32 from the opening 38, and the effect is more remarkable in the nozzle 14 having the lock structure 40 described above. It becomes. Further, by forming the opening 38 with the inclined surface, the function of preventing the insertion tube 16 from coming off from the opening 38 disposed in the region surrounded by the arm 32, that is, the locking performance by the lock structure 40 is improved. Can be made.

  By the way, in the said applicator 10, since the liquid agent L with sufficient viscosity is apply | coated, for example, the liquid agent L discharged from the syringe 12 generate | occur | produces predetermined high pressure (resistance). Therefore, the connection portion between the nozzle 14 and the syringe 12 includes, for example, a luer lock 21 shown in FIGS. 6A and 6B other than the normal taper fitting structure (luer taper fitting structure) shown in FIG. A luer lock structure is also effective.

  As shown in FIGS. 6A and 6B, the luer lock 21 includes a female screw 27 formed on the inner peripheral surface of a cylindrical portion 25 disposed with a gap 23 on the outer peripheral side of the outlet 22a of the syringe 12, and a base. It is comprised from the external thread 29 formed in the base end side outer peripheral surface of the part 30. FIG. The male screw 29 on the nozzle 14 side is screwed onto the female screw 27 on the syringe 12 side, whereby the syringe 12 and the nozzle 14 can be more reliably fitted and fastened.

  Next, modified examples of the nozzle 14 in the applicator 10 configured as described above will be described in order.

  FIG. 7A is a plan view of a nozzle 14a according to a first modification of the nozzle 14, and FIG. 7B is an operation of inserting the insertion tube 16 into a region surrounded by the arm portion 42a of the nozzle 14a shown in FIG. 7A. FIG. 7A and 7B, for ease of understanding, the cross section hatching of the insertion tube 16 shown in a cross section orthogonal to the axial direction is omitted, and the same applies to the following drawings.

  As shown in FIGS. 7A and 7B, the nozzle 14a has an arm portion 42a having a lock structure 40a that obstructs passage of the insertion tube 16 through the opening 38 instead of the arm portion 32 of the nozzle 14 shown in FIG. Prepare. The lock structure 40a is basically the same except that it has a pair of guide portions 44, 44 extending from the pair of end portions of the arm portion 42a constituting the opening portion 38 while being bent in the outer peripheral direction of the arm portion 42a. The lock structure 40 is substantially the same as the above. As can be understood from FIG. 7A, the distance between the leading ends of the guide portions 44 is set to be larger than the width of the opening portion 38, and the interval at which the insertion tube 16 can be smoothly guided to the opening portion 38. Is set to

  Therefore, in the nozzle 14a, when the insertion tube 16 is inserted and arranged in the region surrounded by the arm portion 42a while the opening 38 is expanded (or the insertion tube 16 is contracted), the insertion tube 16 is placed in each region. While being in sliding contact with the inner surface of the guide portion 44, the guide portion 44 can be easily guided to the opening portion 38, and the insertion operation into the region surrounded by the arm portion 42a of the insertion tube 16 is further facilitated.

  FIG. 8 is a plan view of a nozzle 14 b according to a second modification of the nozzle 14.

  As shown in FIG. 8, the nozzle 14 b includes an arm portion 42 b having a lock structure 40 b that inhibits the passage of the insertion tube 16 through the opening 38 a instead of the arm portion 32 of the nozzle 14 shown in FIG. 2. The lock structure 40b has a pair of thin plate tongue-shaped valve members 46 and 46 extending in opposite directions at a pair of opposed end portions (end surfaces) of the arm portion 42b constituting the opening 38a. Each valve member 46 is a member that closes the opening 38a that is set to have a width W1 that is equal to or larger than the outer diameter D of the insertion tube 16 as compared with the above-described opening 38, and the interval between the valve members 46 is mutually different. Although close enough to contact or substantially contact, it is sufficient that the interval is set to be smaller than at least the outer diameter D of the insertion tube 16. The arm portion 42b is formed of a material in which at least the valve member 46 has flexibility (elasticity).

  Therefore, in the nozzle 14b, when the insertion tube 16 is inserted / placed into the region surrounded by the arm portion 42b from the opening 38a, the valve member 46 is pushed by the insertion tube 16 so that the valve member 46 is inserted. The insertion tube 16 can be passed while being tilted inward (see a two-dot chain line in FIG. 8). Further, after the insertion tube 16 is disposed in the region surrounded by the arm portion 42b, the valve member 46 is immediately returned to the original position, and the opening 38a is locked by the valve member 46. The pipe 16 can be surely prevented from coming off from the opening 38a.

  9A is a plan view of a nozzle 14c according to a third modification of the nozzle 14, and FIG. 9B is an operation of inserting the insertion tube 16 into a region surrounded by the arm portion 42c of the nozzle 14c shown in FIG. 9A. FIG.

  As shown in FIGS. 9A and 9B, the nozzle 14c has an arm portion 42c having a lock structure 40c that obstructs the passage of the insertion tube 16 through the opening 38 instead of the arm portion 32 of the nozzle 14 shown in FIG. Prepare. The lock structure 40c includes a pin (convex portion) 48 that protrudes from one end surface of a pair of opposed end portions (end surfaces) of the arm portion 42c constituting the opening 38, and a hole ( (Concave portion) 50. The pins 48 and the holes 50 are formed along the substantially circumferential direction of the arm portion 42c, thereby functioning as engaging portions that can be engaged with each other. Then, as shown in FIG. 9A, the opening 38 is normally set to a narrow gap where the opposite end faces of the arm portion 42c are in contact with or close to each other, and the pin 48 is inserted into the hole 50 and locked. It is in a state.

  Therefore, in the nozzle 14c, when the insertion tube 16 is inserted and arranged from the opening 38 into the area surrounded by the arm 42c, the arm 42c in the vicinity of the opening 38 is expanded and deformed so that the pin 48 is inserted into the hole. By removing from 50, the insertion tube 16 can be passed through the opening 38 (see FIG. 9B). On the other hand, after the insertion tube 16 is arranged inside the arm portion 42c, the arm portion 42c returns to its original position, and the pin 48 is engaged with the hole 50, so that the opening 38 of the insertion tube 16 is reached. It is possible to reliably prevent from coming off (see FIG. 9A).

  At this time, the insertion direction of the pin 48 into the hole 50 intersects (substantially orthogonal) with respect to the axial direction of the applicator 10, that is, the pushing direction of the pusher 26 of the syringe 12. For this reason, at the time of application | coating of the liquid agent L which has arrange | positioned the insertion pipe | tube 16 in the area | region enclosed by the arm part 42c, the applicator 10 is moved back and forth by the pushing operation of the pusher 26 etc., and the insertion pipe | tube 16 is an opening part. Even if it is pressed against the pin 38, the pressing direction and the insertion direction of the pin 48 and the hole 50 intersect each other, so that the pin 48 functions like a hook and the opening 38 is locked. Can be maintained. In other words, the engaging portion constituted by the pin 48 and the hole 50 cannot be released in the radial direction of the arm portion 42c, and the circumferential direction of the arm portion 42c or a direction substantially coincident with the circumferential direction (direction intersecting the radial direction). Can be canceled.

  In the opening 38, the pins 48 and the holes 50 that engage with each other may be formed in other shapes. For example, as shown in FIG. 10, the nozzle 14 provided with the lock structure 40 c has a thin plate-like convex portion 52 instead of the pin 48 and the hole 50, and a groove-like concave portion to which the convex portion 52 can be engaged. The nozzle 14d may be provided with a lock structure 40d composed of 54, and in this case as well, substantially the same operational effects as those of the lock structure 40c can be obtained.

  FIG. 11A is a plan view of a nozzle 14e according to a fifth modification of the nozzle 14, and FIG. 11B is an operation of inserting the insertion tube 16 into a region surrounded by the arm portion 42e of the nozzle 14e shown in FIG. 11A. FIG.

  As shown in FIGS. 11A and 11B, the nozzle 14e has an arm portion 42e having a lock structure 40e that obstructs the passage of the insertion tube 16 through the opening 38 instead of the arm portion 32 of the nozzle 14 shown in FIG. Prepare. The arm portion 42e has opposed portions 57a and 57b that are overlapping and opposed to each other in the vicinity of the pair of end portions 55a and 55b of the arm portion 42e constituting the opening portion 38, and between the opposed portions 57a and 57b. Is an opening 38. In other words, in the arm portion 32e, a pair of end portions 55a and 55b (both opposing portions 57a and 57b) are overlapped in the radial direction of the arm portion 32e, that is, one end portion 55a is included in the other end portion 55b. An opening 38 is set between the two positions.

  The lock structure 40e is provided on the outer surface of the facing portion 57a in the vicinity of the end portion 55a disposed on the inner side of both end portions 55a and 55b (both facing portions 57a and 57b) of the arm portion 42e that defines the opening 38. And a recess 58 provided on the inner surface of the facing portion 57b in the vicinity of the end portion 55b disposed on the outside. The protrusion 56 and the recess 58 function as an engaging portion that can be engaged with each other. As a result, as shown in FIG. 11A, normally, the opening 38 is locked in a state where the opposing portions 57a and 57b of the arm portion 42e overlap each other in contact with or close to each other and the projection 56 is engaged with the recess 58. ing. The protrusion 56 has a substantially right triangle shape having a vertical side in the opening direction of the end portion 55a, that is, in the circumferential direction of the end portion 55a, in the direction from the distal end side to the proximal end side.

  Therefore, in the nozzle 14e, when the insertion tube 16 is inserted / placed into the region surrounded by the arm portion 42e from the opening 38, as shown in FIG. 11B, the opposing portions 57a of the arm portions 42e that overlap each other are provided. , 57b, and the insertion tube 16 is pushed in and the opening 38 is expanded, so that the projection 56 can be removed from the recess 58 and the insertion tube 16 can be passed through the opening 38. On the other hand, after the insertion tube 16 is arranged inside the arm portion 42e, the arm portion 42e returns to its original position, and the projection 56 is engaged with the recess 58, so that the opening 38 of the insertion tube 16 is reached. It is possible to reliably prevent from coming off (see FIG. 11A).

  At this time, in the lock structure 40e, the opposing portions 57a and 57b of the arm portion 42e constituting the opening portion 38 are stacked and the engagement direction of the protrusion 56 with the recess 58 is substantially coincident with the stacking direction. Yes. For this reason, when applying the liquid L in which the insertion tube 16 is disposed in the region surrounded by the arm portion 42e, the applicator 10 is moved back and forth in the axial direction by the pushing operation of the pusher 26 and the insertion tube 16 is opened. 38, the pressing force in the direction of the arrow A causes the inner end 55a of the arm portion 42e to be moved from the inner side to the outer side. It acts in the opening direction to spread. Then, the protrusion 56 presses the recess 58 by the opening direction in which the end portion 55a opens while turning, that is, the pressing force in the arrow B direction in FIG. 11, and as a result, the protrusion 56 and the recess 58 are more Since the engagement is firmly, the locked state of the opening 38 can be reliably maintained. In this way, the engaging portion constituted by the protrusion 56 and the recess 58 can be released in the circumferential direction of the arm portion 42e or in a direction substantially coincident with the circumferential direction (direction intersecting the radial direction), and the arm portion 42e It can be released in the radial direction.

  12A is a plan view of a nozzle 14f according to a sixth modification of the nozzle 14, and FIG. 12B is an operation of inserting the insertion tube 16 into a region surrounded by the arm portion 42f of the nozzle 14f shown in FIG. 12A. FIG.

  As shown in FIGS. 12A and 12B, the nozzle 14f has an arm portion 42f having a lock structure 40f that blocks passage of the insertion tube 16 through the opening 38 instead of the arm portion 32 of the nozzle 14 shown in FIG. Prepare. In the lock structure 40f, one end of a pair of opposed ends of the arm portion 42f constituting the opening 38 is formed as a curved tongue-shaped valve member 60. Normally, the valve member 60 The opening 38 is set in a locked state by curling the tip of the ring and contacting or approaching the other end surface. The arm part 42f is formed of a material in which at least the valve member 60 has flexibility (elasticity).

  Therefore, in the nozzle 14f, when the insertion tube 16 is inserted / placed from the opening 38 into the region surrounded by the arm portion 42f, the valve member 60 is pushed by the insertion tube 16 and tilted to the inside. 38 can pass the insertion tube 16 (see FIG. 12B). Further, after the insertion tube 16 is disposed in the region surrounded by the arm portion 42f, the valve member 60 is immediately returned to the original position, and the opening 38 is locked by the valve member 60. The pipe 16 can be reliably prevented from coming off from the opening 38.

  FIG. 13 is a plan view of a nozzle 14 g according to a seventh modification of the nozzle 14.

  As illustrated in FIG. 13, the nozzle 14 g includes an arm portion 42 g having a lock structure 40 g that prevents passage of the insertion tube 16 through the opening 38 a instead of the arm portion 32 of the nozzle 14 illustrated in FIG. 2. In the arm portion 42g, a pair of end portions of the arm portion 42g constituting the opening 38a are arranged to face each other with a gap G1 interposed therebetween. This interval G1 functions as the opening 38a by being set to an interval equal to or larger than the outer diameter D of the insertion tube 16. That is, in the lock structure 40g, the both ends of the arm part 42g are offset and arranged opposite to each other by a gap G1, so that the width is set to be equal to or larger than the outer diameter D of the insertion tube 16, and the passage (displacement passage) of the insertion tube 16 An opening 38a is provided.

  Therefore, in the nozzle 14g, when the insertion tube 16 is inserted and arranged from the opening 38a into the region surrounded by the arm 42g, the nozzle 14g is inserted into the opening 38a only by slightly swinging in the horizontal direction. A tube 16 can be passed through. On the other hand, in the state where the insertion tube 16 is disposed inside the arm portion 42g, the opening direction of the opening 38a intersects the axial direction of the applicator 10, that is, the pushing direction of the pusher 26 of the syringe 12 (FIG. 13). Therefore, even when the applicator 10 is moved back and forth in the axial direction by a pushing operation of the pusher 26 or the like, the insertion tube 16 does not easily come out of the opening 38a, and the opening 38a. Can be securely locked.

  In order to further improve the function of preventing the insertion tube 16 from coming off the opening 38a in the lock structure 40g constituting the nozzle 14g, for example, as shown in FIG. 14, an arm portion constituting the opening 38a is provided. You may comprise as the nozzle 14h which has the lock structure 40h which wound and arrange | positioned a pair of end part of 42h in substantially spiral shape.

  As shown in FIG. 14, this lock structure 40h has opposed portions 59a and 59b that are overlapping and opposed to each other in the vicinity of a pair of ends constituting the arm portion 42h, and between the opposed portions 59a and 59b. Is an opening 38a. Therefore, in the lock structure 40h, the passage (spiral passage) by the opening 38a is more complicated and longer than the above-described lock structure 40g. For this reason, the passage from the opening 38a of the insertion tube 16 is further increased. Reliable stopper can be secured.

  Thus, in the lock structures 40g and 40h, the opening 38a serving as the passage of the insertion tube 16 is in the pushing direction of the pusher 26, in other words, in the inflow direction of the liquid L from the liquid storage portion 22b to the nozzles 14g and 14h. Thus, when the insertion tube 16 is passed through the opening 38a, it is necessary to move the applicator 10 along the opening 38a. It can be stopped.

  FIG. 15 is a perspective view of a nozzle 14 i according to a ninth modification of the nozzle 14. 16A is a plan view of the nozzle 14i shown in FIG. 15, and FIG. 16B is a front view of the nozzle 14i shown in FIG. 16A.

  As shown in FIGS. 15, 16A, and 16B, the nozzle 14i has an arm having a lock structure 40i that blocks the passage of the insertion tube 16 through the opening 38a instead of the arm portion 32 of the nozzle 14 shown in FIG. The unit 42i is provided. In this arm portion 42i, a pair of end portions 61a and 61b of the arm portion 42i constituting the opening 38a intersect each other while being twisted in the vertical direction (the direction along the center line of the circle of the arm portion 42i). That is, one end portion 61a and the other end portion 61b constituting the arm portion 42i intersect with each other in the overlapping direction in a plan view shown in FIG. 16A. In the lock structure 40i, the both end portions 61a and 61b of the arm portion 42i are twisted while being offset by a gap G1, and the width of the insertion tube 16 is set to be equal to or larger than the outer diameter D. An opening 38a serving as a (step difference passage) is provided. That is, in this lock structure 40 i, the opening direction of the opening 38 a is inclined in a direction orthogonal to the axial direction of the applicator 10.

  Therefore, in the nozzle 14i, when the insertion tube 16 is inserted and arranged from the opening 38a into the region surrounded by the arm portion 42i, the applicator 10 (nozzle 14i) is within the region surrounded by the arm portion 42i. From the posture at the time of application in which the insertion tube 16 is inserted (basic posture; see FIG. 5A), the posture (passing) about 90 ° roll rotation (see arrow θ in FIGS. 15 and 16B) around the axial direction. Posture). Then, after passing the insertion tube 16 through the opening 38a in this passing posture, the applicator 10 (nozzle 14i) is rotated by approximately 90 ° in the reverse direction and returned to the basic posture, thereby being surrounded by the arm portion 42i. The insertion tube 16 can be disposed within the region (see FIG. 16A). On the other hand, at the time of application of the liquid L in which the insertion tube 16 is disposed inside the arm portion 42i, the nozzle 14i is set to the basic posture, so that the applicator 10 is moved in the axial direction by the pushing operation of the pusher 26 of the syringe 12 or the like. Even when the applicator is moved back and forth, as long as the applicator 10 is not set to the passing posture, the insertion tube 16 does not pass through the opening 38a, and the opening 38a can be reliably locked.

  As described above, in the lock structure 40i, the opening 38a serving as the passage of the insertion tube 16 intersects the pushing direction of the pusher 26, in other words, the inflow direction of the liquid L from the liquid storage portion 22b to the nozzle 14i. The insertion tube 16 is prevented from coming off.

  Next, another configuration example of the applicator 10 configured as described above will be described.

  FIG. 17 is a perspective view of a liquid agent applicator 10a according to another configuration example of the liquid agent applicator 10 shown in FIG.

  In the liquid agent applicator 10 including the nozzles 14 (14a to 14i), the nozzle 14 and the like are configured to be detachable from the syringe 12, but as illustrated in FIG. 14 can be configured as a liquid applicator 10a integrally provided with a nozzle 14j having a substantially structured structure. Thereby, in the applicator 10a, the process of mounting the nozzle 14j on the syringe 12a is unnecessary, and the handling becomes easier. Furthermore, the manufacturing cost of the applicator 10a can be reduced by integrating the nozzle 14j into the syringe 12a. In addition, in FIG. 17, although the structure substantially the same as the nozzle 14 is illustrated as the nozzle 14j, of course, you may use what consists of a structure substantially the same as the other nozzles 14a-14i for the said applicator 10a. The same applies to the next applicator 10b.

  18A is a plan view of a liquid agent applicator 10b according to still another configuration example of the liquid agent applicator 10 shown in FIG. 1, and FIG. 18B is a side view of the liquid agent applicator 10b shown in FIG. 18A.

  As shown in FIGS. 18A and 18B, the liquid agent applicator 10b has a small flat main body 62 having a liquid storage portion 62a instead of the syringe 12a of the applicator 10a shown in FIG. Is integrally provided with a nozzle 14k provided with a nozzle flow path 34 communicating with the liquid storage section 62a. A bulging portion 62b bulging in a flat hemispherical shape is provided on the upper and lower surfaces of the substantially central portion of the main body 62, and the inside of the bulging portion 62b is a liquid storage portion 62a. In the main body 62, at least the bulging portion 62b constituting the liquid storage portion 62a is formed of a flexible resin material or the like.

  Therefore, in the applicator 10b, with the user holding the main body 62 with one hand, the bulging portion 62b (liquid storage portion 62a) is formed with the thumb and index finger, for example, as indicated by the arrow P in FIG. 18B. By pressing in the crushing direction, the liquid L can be discharged from the discharge hole 36 of the nozzle 14k. Thus, since the applicator 10b does not require a syringe, the overall structure can be made more compact and low-cost, and the handleability can be further improved.

  The present invention is not limited to the above-described embodiment, and it is needless to say that various configurations or processes can be adopted without departing from the gist of the present invention.

  For example, the liquid agent L to be discharged / applied by the liquid agent applicator 10 may of course be other than a liquid agent containing a sealant containing cyanoacrylate and an antibacterial agent such as chlorhexidine and having sufficient viscosity, The point is that it can be solidified by being applied to the periphery of the insertion portion 20 or can cover and close the gap G with an appropriate viscosity. For example, a gel or polysaccharide gel mainly composed of polyethylene glycol is used. Also good. In addition, the liquid agent applied with the said applicator means a liquid thing in the apply | coated state, and naturally also includes what solidifies like a sealant after apply | coating.

DESCRIPTION OF SYMBOLS 10, 10a, 10b ... Liquid agent applicator 12, 12a ... Syringe 14, 14a-14k ... Nozzle 16 ... Insertion tube 18 ... Biological tissue 20 ... Insertion part 32, 42, 42a-42i ... Arm part 36 ... Discharge hole 38, 38a ... Opening 40, 40a-40i ... Lock structure

Claims (11)

An arm portion capable of surrounding at least a part of the outer peripheral surface of the elongated insert to be inserted into the living tissue;
A discharge hole that is provided in the arm portion and discharges a liquid agent for covering the insertion portion of the insert into the living tissue toward the outer peripheral surface of the insert;
A locking structure that inhibits passage of the insert through an opening formed in the arm to pass the insert to the inside and outside of the arm; and
A liquid applicator characterized by comprising: The liquid medicine applicator according to claim 1,
A liquid storage part filled with the liquid agent;
A nozzle having the arm part, and capable of circulating the liquid agent from the liquid storage part to the arm part;
A liquid applicator characterized by comprising: The liquid medicine applicator according to claim 1 or 2,
The liquid application tool, wherein the lock structure includes the opening having a width smaller than the outer diameter of the insert. In the liquid medicine applicator according to claim 3,
The said arm part has the flexibility which can carry out the widening deformation of the said opening part, The liquid agent applicator characterized by the above-mentioned. The liquid medicine applicator according to claim 4,
A pair of end portions constituting the opening of the arm portion is provided with an engaging portion that connects both ends, and the engaging state of the engaging portion cannot be released in the radial direction of the arm portion. A liquid applicator characterized by that. The liquid medicine applicator according to claim 4,
The liquid agent applicator, wherein the arm portion has opposing portions that overlap and face each other in the vicinity of a pair of end portions of the arm portion constituting the opening. The liquid medicine applicator according to claim 1 or 2,
The liquid application device, wherein the lock structure includes the opening having a width equal to or larger than the outer diameter of the insert, and a flexible valve member provided in the opening. The liquid medicine applicator according to claim 1 or 2,
The arm portion is configured such that a pair of end portions constituting the opening portion are opposed to each other,
The liquid application tool, wherein the lock structure has a passage formed between the pair of end portions. The liquid medicine applicator according to claim 1 or 2,
The arm portion has opposing portions that overlap and face each other in the vicinity of a pair of end portions constituting the opening,
The liquid application tool, wherein the lock structure has a passage formed between the facing portions. The liquid medicine applicator according to claim 1 or 2,
The lock structure includes a passage in which a pair of end portions constituting the opening portion of the arm portion intersect each other in a direction overlapping in a plan view with a space equal to or larger than the outer diameter of the insert. Liquid applicator. The liquid agent applicator according to any one of claims 8 to 10,
The liquid agent applicator, wherein the passage is formed in a direction intersecting with the inflow direction of the liquid agent from the liquid storage part to the nozzle.

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