JP2012066006A - Solution applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solution applicator making it possible to further surely close a gap generated in an inserting part between an elongated inserting body and a living body tissue.SOLUTION: The solution applicator 10 has the solution storing part 22b filled with the solution L for covering the inserting part 20 to the living body tissue 18 of the inserting tube 16, the arm part 32 capable of surrounding a part of the outer peripheral surface of the inserting tube 16, and the nozzle 14 in which the discharging holes 36 for discharging the solution L filling the solution storing part 22b toward the outer peripheral surface of the inserting tube 16 are arranged in the arm part 32. Further, the solution applicator 10 has the holding mechanism 42 positioning and holding the inserting tube 16 at the predetermined position within the area surrounded by the arm part 32 and the holding mechanism 42 has balloons 40 capable of expanding and constricting from the inner surface 32a of the arm part 32.

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 includes an arm portion that can surround at least a part of an outer peripheral surface of a long insertion body to be inserted into a living tissue, and a predetermined region in a region surrounded by the arm portion. It is characterized by comprising a holding mechanism for positioning and holding at a position, and a discharge hole for discharging a liquid agent for covering the insertion portion of the insert into the living tissue toward the outer peripheral surface of the insert.

  According to such a configuration, by discharging the liquid agent from the discharge hole toward the outer peripheral surface of the insert body surrounded by the arm portion, the liquid agent is applied to the insertion portion and its periphery, and the gap generated in the insertion portion Can be reliably covered and closed. Furthermore, by providing a holding mechanism that positions and holds the insert in a predetermined position within the area surrounded by the arm portion, the liquid agent can be stably applied while the insert is positioned and held within the area surrounded by the arm portion. can do.

  A liquid storage part filled with the liquid agent; and a nozzle having the arm part, the holding mechanism, and the discharge hole, and capable of circulating the liquid agent from the liquid storage part in the discharge hole. It is good also as a structure which discharges the liquid agent with which it filled in the liquid part from the discharge hole of a nozzle.

  In this case, when the discharge hole is provided in the arm portion and the holding mechanism is provided at a position avoiding the discharge hole of the arm portion, the holding mechanism prevents the liquid agent from being discharged from the discharge hole. can do.

  The arm portion has a ring shape having an inner diameter larger than the outer diameter of the insert, and the holding mechanism has a centering mechanism for positioning and holding the insert at a substantially center of a region surrounded by the arm portion. The distance from each discharge hole provided on the inner surface of the arm portion to the outer peripheral surface of the insert can be made substantially uniform, and the liquid agent can be more uniformly applied to the insertion portion.

  The holding mechanism is provided on the inner surface of the arm part, and has a balloon that can be expanded and contracted by the pressure of the liquid agent supplied from the liquid storage part. The insert can be positioned and held in the region surrounded by the arm portion.

  It is preferable that a plurality of the balloons are provided on the inner surface of the arm portion, and the insertion body is sandwiched by the tips of the expanded balloons.

  The arm portion may have an opening through which an outer diameter of the insert can pass in a part of a direction surrounding the insert. If it does so, an insertion body can be easily arrange | positioned inside an arm part via this opening part.

  The holding mechanism has a film body stretched on a surface intersecting the axial direction of the insert on the inner surface of the arm portion, and the film body has a slit extending toward the opening, By pushing the insert into the inner part of the film body through the slit, the insert can be positioned and held in the region surrounded by the arm part.

  The slit is open on the opening side, closed on the opposite side to the opening side, and a hole wider than the slit is provided in the closed part, After passing through the slit from the opening, the insert can be stably held by the hole.

  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 toward the outer peripheral surface of the insert body surrounded by the arm portion, so that the insert portion and the periphery thereof are discharged. The liquid agent can be applied to reliably cover and close the gap generated in the insertion portion. Furthermore, by providing a holding mechanism that positions and holds the insert in a predetermined position within the area surrounded by the arm portion, the liquid agent can be stably applied while the insert is positioned and held within the area surrounded by the arm portion. can do.

It is a partially exploded perspective view of the liquid agent applicator according to the first embodiment of the present invention. 2A is a partial cross-sectional view in which the distal end side in a state where the balloon is deflated in the liquid agent applicator shown in FIG. 1 is enlarged, and FIG. 2B is a partial cross-sectional view in a state where the balloon is expanded from the state shown in FIG. 2A. It is. FIG. 3A 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. 3B is a plan view of the applicator shown in FIG. 3A. FIG. 3C is an explanatory view showing a state in which the liquid agent is applied from the state shown in FIG. 3A and the periphery of the insertion portion is covered with the liquid agent. 4A is a partially omitted plan view of a nozzle according to a modified example of the nozzle shown in FIG. 1, and FIG. 4B is a partially omitted plan view of the nozzle according to another modified example of the nozzle shown in FIG. FIG. 5A is a side cross-sectional view of a configuration example in which a lock mechanism is provided at a connection portion between a syringe and a nozzle, and FIG. 5B is a side cross-sectional view in which the lock mechanism shown in FIG. 5A is in a locked state. It is a partial exploded perspective view of the liquid agent applicator which concerns on the 2nd Embodiment of this invention. 7A is an enlarged partial cross-sectional view of the distal end side of the liquid medicine applicator shown in FIG. 6, and FIG. 7B is a partial cross-sectional view in a state where the insertion tube is positioned and held from the state shown in FIG. 7A. It is sectional explanatory drawing which follows the VIII-VIII line in FIG. 7A. It is a perspective view of the liquid agent applicator which concerns on the 3rd Embodiment of this invention. FIG. 10A is a plan view of a liquid agent applicator according to a fourth embodiment of the present invention, and FIG. 10B is a side view of the liquid agent applicator shown in FIG. 10A. FIG. 10 is a partially omitted plan view of a nozzle according to still another modified example of the nozzle shown in FIG. 1.

  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 medicine applicator 10 according to the first embodiment of the present invention. 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. 3A). That is, the applicator 10 is a medical instrument for applying the liquid L from the nozzle 14 at the tip 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 FIG. 1 is called the “base end (rear end)” side, and the right side (nozzle 14 side) is called the “front end” side.

  As shown in FIG. 1, the syringe 12 slides in a liquid-tight manner within the outer cylinder 22 and an outer cylinder (cylinder) 22 provided with an outflow port 22 a protruding in a tapered shape at the tip, and the liquid agent L is contained therein. A gasket 24 that defines the liquid storage portion 22b to be filled is provided at 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 a base end surface having an injection port 28 that is tapered to the outflow port 22a of the syringe 12, and the insertion tube 16 in plan view (see FIG. 2A) from the distal end of the base portion 30. An arm portion (ring portion) 32 formed in, for example, a C ring shape, a V shape, or a U shape (in this embodiment, a C ring shape is illustrated) And have.

  Further, when the nozzle 14 surrounds the insertion tube 16 in the region surrounded by the arm portion 32, the nozzle 14 positions and holds the insertion tube 16 at a predetermined position in the region surrounded by the arm portion 32 (this embodiment). In the embodiment, the holding mechanism 42 having four balloons 40 is provided. 1 and 2B show an expanded state of the balloon 40, and FIG. 2A shows a deflated (folded) state of the balloon 40.

  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. 2A). And FIG. 2B). Further, a plurality (seven in this embodiment) of discharge holes 36 branched from the nozzle flow path 34 are avoided on the inner surface (inner peripheral surface) 32a of the arm portion 32 formed in a substantially circular shape. An opening is formed at the position.

  As shown in FIGS. 2A and 2B, each of the discharge holes 36 in the nozzle 14 is formed in the discharge direction directed toward the center of the circle constituting the arm portion 32. Of course, the discharge direction and arrangement interval of the discharge holes 36 can be changed as appropriate.

  As shown in FIGS. 1 and 2A, the arm portion 32 is provided with an opening (notch portion, slit) 38 through which the outer diameter of the insertion tube 16 can pass on the distal end side in the axial direction of the base portion 30. . In the case of this embodiment, the opening part 38 is comprised by the inclined shape which a width | variety (distance between inner surfaces) expands toward a front-end | tip direction.

  The balloons 40 constituting the holding mechanism 42 are provided at substantially equal intervals on the inner surface 32a of the arm portion 32, and can be expanded (expanded) toward the center C of the region surrounded by the arm portion 32 in plan view. At the same time (see FIG. 2B), the entire balloon is in close contact with the inner surface 32a of the arm portion 32 and can be contracted (folded) to a state where it hardly protrudes from the inner surface 32a (see FIG. 2A). The balloon 40 is configured, for example, in a cylindrical shape having a hemispherical curved surface at the tip, a dome shape, or the like when expanded. As shown in FIG. 2B, at the time of expansion, the tips of the balloons 40 are gathered from the radial direction toward the center C of the region surrounded by the arm portion 32.

  The contraction and expansion of the balloon 40 can be controlled by a change in its internal pressure, and the liquid agent L is pumped from the expanded flow path 44 communicating with the nozzle flow path 34 to the inside from the contracted state (see FIG. 2A). This expands into a cylindrical shape (see FIG. 2B), and contracts again by releasing the pressure of the liquid L.

  Therefore, in the holding mechanism 42, as shown in FIG. 2A, in a state where the liquid L is not supplied from the syringe 12, each balloon 40 contracts and the insertion tube 16 can be easily moved into and out of the arm portion 32 through the opening 38. Can be passed through. On the other hand, as shown in FIG. 2B, the liquid agent L is supplied through the nozzle flow path 34 and the expansion flow path 44, so that each balloon 40 is expanded and disposed in the region surrounded by the arm portion 32. The outer peripheral surface of the insertion tube 16 can be pressed almost uniformly with the tip of each balloon 40, and the insertion tube 16 can be positioned and held at a position substantially coincident with the center C of the region surrounded by the arm portion 32.

  The material of the nozzle 14 configured in this way is not particularly limited. For example, the base portion 30 and the arm portion 32 are made of resins such as polypropylene, polyethylene, polyvinyl chloride, cyclic polyolefin, polystyrene, polycarbonate, acrylic resin, polyamide, and the like. Should be used. The balloon 40 is made of, for example, the same material as that used for a general balloon catheter, such as polyethylene, polyethylene elastomer, polyamide, polyamide elastomer, polyurethane, polyurethane elastomer, polyolefin, polyolefin elastomer, polyester, polyester elastomer, and the like. Preferably, it may be formed of polyamide, polyamide elastomer, polyester, or polyester elastomer. The outer cylinder 22 and the pusher 26 of the syringe 12 may be made of the same material as the base portion 30 and the like, and the gasket 24 may be made of styrene-butadiene rubber, butyl rubber, isoprene rubber, silicone rubber, polyester elastomer, or the like. Various elastomers may be used.

  Regarding the size of the nozzle 14, for example, the length from the base end of the base portion 30 to the tip of the arm portion 32 is about 10 mm to 50 mm, preferably about 20 mm to 30 mm. The inner diameter of the inner surface 32a of the arm part 32, that is, the outer diameter of the region surrounded by the arm part 32 is, for example, about 5 mm to 30 mm, preferably about 10 mm to 20 mm, although it depends on the outer diameter of the insertion tube 16. The width (interval) of the opening 38 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. The diameter of the balloon 40 is, for example, about 2 mm to 20 mm, preferably about 4 mm to 15 mm, and the length when expanded (the length in the inner diameter direction of the arm portion 32) is about 2 mm to 12 mm, preferably It is good that it is about 4 mm to 10 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. 3A to 3C. FIG. 3A 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. 3B is an application shown in FIG. 3A. 3C is a plan view of the tool 10, and FIG. 3C is an explanatory view showing a state where the liquid agent L is applied from the state shown in 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. 3A, the insertion tube 16 is interposed between the insertion tube 16 and the biological tissue 18 in the insertion portion 20. A gap G is formed along the outer peripheral surface. In FIGS. 3A to 3C, the gap G is slightly exaggerated for ease of understanding, but the actual gap G is narrower than that illustrated in FIGS. 3A to 3C. 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 outflow port 22a of the syringe 12 and opening the outflow port 22a, attaching the nozzle 14 and performing priming, as shown in FIGS. 2A and 3A, The insertion tube 16 is inserted into the arm portion 32 through the opening 38 and is arranged so as to surround the insertion tube 16 with the inner surface 32 a of the arm portion 32. That is, the insertion tube 16 is inserted inside the ring of the arm portion 32. At this time, as shown in FIG. 2A, in the holding mechanism 42, each balloon 40 is contracted in a state where the liquid L is not supplied from the syringe 12, so that the insertion tube 16 is surrounded by the arm portion 32. It can be easily placed inside.

  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. 3A). The width (minimum width) of the opening 38 is preferably set to be slightly larger than the outer diameter of the target insertion tube 16, for example, about several percent to several tens of percent. The inner diameter of the inner surface 32a of 32 is 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. This is not the case when the opening 38 is made of an elastic member and can be expanded.

  Subsequently, by pushing the pusher 26 of the syringe 12, as shown in FIGS. 2B, 3 </ b> B, and 3 </ b> C, the liquid agent L is pumped into the respective balloons 40 from the expansion flow paths 44 and the respective balloons 40 are expanded. As a result, the outer peripheral surface of the insertion tube 16 is sandwiched between the tips of the balloons 40 and is positioned and held at a position substantially coincident with the center C of the area surrounded by the arm portion 32, and at the same time, the liquid L is applied to the nozzle 14. It discharges toward the insertion tube 16 at once from each discharge hole 36.

  Accordingly, the liquid agent L discharged from the discharge hole 36 descends along the outer peripheral surface of the insertion tube 16 and reaches the insertion portion 20, and the liquid agent L is appropriately applied to the insertion portion 20 and the periphery thereof, and the gap G is formed. It is surely 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, a discharge hole 36 for the liquid agent L is formed on the inner surface 32 a of the arm portion 32, and a holding mechanism 42 is further provided. Therefore, when applying the liquid agent L, the insertion tube 16 is positioned and held inside the arm portion 32 at a predetermined position (for example, a position corresponding to the center C of the region surrounded by the arm portion 32), and the liquid agent is discharged from the discharge hole 36. L can be reliably discharged to the outer peripheral surface of the insertion tube 16 at once, and high operability and reliable application are possible. That is, each discharge hole 36 is formed in the inner surface 32 a of the arm portion 32 and the balloon 40 constituting the holding mechanism 42 is provided, so that the insertion tube 16 is simply disposed inside (inside) the arm portion 32. When applying the liquid agent L, the insertion tube 16 is positioned and held securely, and the liquid agent L is stably and evenly applied to the outer peripheral surface of the insertion tube 16 in a state where it is prevented from coming off from the region surrounded by the arm portion 32. It can be discharged.

  In addition, the discharge hole of the liquid agent L is used instead of or in addition to the discharge hole 36 provided on the inner surface of the arm part 32, as illustrated by a two-dot chain line on one balloon 40 on the base part 30 side in FIG. 2B. The discharge hole 40a may be provided on the side surface (or the front end surface) of each balloon 40. Thus, by providing the discharge hole 40a in the balloon 40, the structure of the arm part 32 is simplified and manufacturing efficiency can be improved. However, in order to sufficiently expand the balloon 40 with the liquid L, it is preferable that the total cross-sectional area of all the discharge holes 40 a in one balloon 40 is smaller than the cross-sectional area of the expansion channel 44.

  Here, the holding mechanism 42 constitutes a centering mechanism capable of positioning and holding the insertion tube 16 at a position substantially coincident with the center C of the region surrounded by the arm portion 32 by each balloon 40. The distance from each discharge hole 36 provided in the inner surface 32a to the outer peripheral surface of the insertion tube 16 can be made substantially uniform. For this reason, the liquid L can be more uniformly applied to the insertion portion 20. Of course, the holding mechanism 42 may have a structure that does not constitute a centering mechanism, and the holding position of the insertion tube 16 may be appropriately set depending on the specification and application of the applicator 10.

  As a holding mechanism for positioning and holding the insertion tube 16, for example, a holding arm 43 shown by a two-dot chain line in FIG. 3A may be provided in addition to the holding mechanism 42 provided in the arm portion 32. The holding arm 43 is configured in, for example, a C shape, a U shape, a V shape, or the like so as to surround and hold the insertion tube 16 at the tip of a frame extending from the base portion 30, and the insertion tube 16. It has a ring-shaped holding portion 43a having a slightly larger inner diameter. By providing the holding arm 43, the holding mechanism 42 and the holding arm 43 can hold two locations in the axial direction of the insertion tube 16, and the insertion tube 16 can be positioned and held more stably. 3A, the holding portion 43a of the holding arm 43 may be provided at the lower portion instead of the upper portion of the arm portion 32. However, the liquid L from the discharge hole 36 travels along the outer peripheral surface of the insertion tube 16. Since it is applied to the insertion portion 20, it is preferably provided on the upper portion of the arm portion 32 as shown in FIG. 3A.

  As described above, in the applicator 10, for example, the liquid L having a sufficient viscosity is applied, so that the liquid L discharged from the syringe 12 has a predetermined high pressure that can sufficiently expand the balloon 40 ( (Hydraulic pressure). For this reason, in the holding mechanism 42, the insertion tube 16 is arranged in the region surrounded by the arm portion 32 without requiring a special operation for the user of the applicator 10 to expand the balloon 40. By simply pushing the pusher 26, the balloon 40 is reliably expanded by the liquid pressure of the liquid L supplied from the syringe 12, and the insertion tube 16 can be positioned and held automatically.

  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.

  As shown in FIG. 2A, the nozzle 14 has an opening 38 for inserting the insertion tube 16 into a region surrounded by the arm portion 32, and this opening 38 is formed in the distal direction of the applicator 10; That is, an opening is formed on the axis. Thereby, when setting the applicator 10 to the insertion tube 16, the user can easily pass the insertion tube 16 through the opening 38 while holding the syringe 12 portion with one hand. Sex 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. Accordingly, the insertion tube 16 can be more easily inserted from the opening 38 into the region surrounded by the arm portion 32, and the opening of the insertion tube 16 once disposed inside the arm portion 32. A function of preventing the slippage from 38 can be provided.

  Although the four balloons 40 constituting the holding mechanism 42 are exemplified in the above description, for example, as shown in FIG. 4A, the three balloons 40 are arranged on the inner surface 32a of the arm portion 32 substantially evenly. You may comprise as the nozzle 14a provided with the mechanism 42a. In short, as long as the balloon 40 can position and hold the insertion tube 16 arranged inside the arm portion 32 at a predetermined position, for example, as shown in FIG. Alternatively, the nozzle 14b may include a holding mechanism 42b provided with a support base 46 having a curved receiving surface 46a for receiving the back surface of the insertion tube 16. The receiving surface 46a may be made of an elastic material similar to that of the balloon 40, for example.

  As in the nozzles 14, 14a, and 14b shown in FIGS. 2B, 4A, and 4B, at least one of the balloons 40 is disposed at a position that closes the opening 38 to some extent when it is expanded. If so, it is possible to prevent the insertion tube 16 from coming out of the arm portion 32 more reliably. That is, in the nozzles 14, 14 a, and 14 b, the balloon 40 is provided on both sides of the opening 38, so that when the insertion tube 16 is disposed inside the arm 32, the balloon 40 contracts and the opening 38 When the insertion tube 16 is positioned and held inside the arm portion 32, the balloon 40 is expanded and the arm portion 32 side of the opening portion 38 is partially blocked by the balloon 40. The tube 16 is prevented from coming off.

  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. 5A and 5B in addition to the normal taper fitting structure (luer taper fitting structure) shown in FIG. A luer lock structure is also effective.

  As shown in FIGS. 5A and 5B, the luer lock 21 includes a female screw 27 formed on the inner peripheral surface of a cylindrical portion 25 arranged with a gap 23 on the outer peripheral side of the outlet 22 a 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.

  FIG. 6 is a perspective view of a liquid medicine applicator 50 according to the second embodiment of the present invention. In the liquid agent applicator 50 according to the second embodiment, elements having the same or similar functions and effects as those of the liquid agent applicator 10 according to the first embodiment are denoted by the same reference numerals and are described in detail. The same shall apply hereinafter.

  In the applicator 50 according to the second embodiment, a holding mechanism 52 is used instead of the holding mechanism 42 of the first embodiment in order to position and hold the insertion tube 16 within the region surrounded by the arm portion 32. It has the nozzle 15 provided with.

  As shown in FIGS. 6 and 7A, the holding mechanism 52 includes a thin film body (sheet) 54 that is stretched along the inner surface 32a so as to cover the inner surface 32a of the arm portion 32 and elastically deformable. The film body 54 extends from the center of the bottom of the recess 56 toward the center C of the region surrounded by the arm portion 32, and the recess 56 formed along the inclined surface of the opening 38 in a plan view shown in FIG. 7A. The slit 58 and the back of the slit 58 communicate with each other and have a holding hole (hole) 60 formed so as to surround the center C.

  That is, the film body 54 is provided on a surface that intersects (in the present embodiment, orthogonal) with the axial direction of the insertion tube 16 on the inner surface 32a of the arm portion 32, and the slit 58 opens on the opening 38 side. The opposite side to the portion 38 is a dead end blocked by the holding hole 60. Therefore, in the holding mechanism 52, when the insertion tube 16 is disposed inside the arm portion 32 from the state shown in FIG. 7A, the insertion tube 16 is passed from the opening 38 to the recess 56, and the slit 58 is further formed. By allowing the insertion tube 16 to pass while being spread on the outer peripheral surface, the insertion tube 16 can be positioned and held in the holding hole 60 as shown in FIG. 7B.

  As the material of the film body 54, for example, various elastomers such as styrene-butadiene rubber, butyl rubber, isoprene rubber, silicone rubber, and polyester elastomer may be used. Further, the thickness of the film body 54 is preferably about 0.1 mm to 5 mm, for example, and the width of the slit 58 may be any width as long as it is substantially 0 (zero) to smaller than the outer diameter of the insertion tube 16. The diameter of the hole 60 is preferably equal to or smaller than the width of the slit 58 and equal to or smaller than the outer diameter of the insertion tube 16. However, the diameter of the holding hole 60 may be greater than or equal to the outer diameter of the insertion tube 16.

  As shown in FIG. 8, the film body 54 is located on the inner surface 32 a of the arm portion 32 with respect to the living tissue 18 in a state where the insertion tube 16 is disposed above the discharge hole 36, that is, inside the arm portion 32. Thus, the position is set to be farther from the discharge hole 36. Thereby, since the liquid agent L is discharged from the discharge hole 36 to the lower surface side of the film body 54, the film body 54 does not get in the way and the liquid agent L can be reliably applied to the insertion portion 20.

  Therefore, in order to prevent the upper and lower sides of the nozzle 15 from being inverted upside down and prevent the membrane body 54 from being disposed on the living tissue 18 side from the discharge hole 36, a predetermined mark 62 (FIGS. 6 to 7B) is formed on the upper surface of the arm portion 32. It is also effective to notify the user of the correct installation direction of the nozzle 15 by the mark 62. The mark 62 may be formed by printing or engraving, for example.

  FIG. 9 is a perspective view of a liquid medicine applicator 70 according to the third embodiment of the present invention.

  In the applicator 10 (50) according to the first (second) embodiment, the nozzle 14 (15) is configured to be attachable to and detachable from the syringe 12, but the applicator 70 is shown in FIG. As described above, the nozzle 14 (14a, 14b, 15) and the nozzle 74 having the substantially structure are integrally provided at the tip of the syringe 72 having the substantially same structure as the syringe 12.

  Therefore, in the applicator 70, the process of attaching the nozzle 74 to the syringe 72 is unnecessary, and handling becomes easier. Furthermore, since the nozzle 74 is integrated with the syringe 72, the manufacturing cost of the applicator 70 can be reduced.

  FIG. 10A is a plan view of a liquid agent applicator 80 according to the fourth embodiment of the present invention, and FIG. 10B is a side view of the liquid agent applicator 80 shown in FIG. 10A.

  The applicator 80 has a small flat main body 82 having a liquid storage part 82a instead of the syringe 72 of the applicator 70 shown in FIG. 9, and communicates from the liquid storage part 82a to the tip of the main body part 82. A nozzle 84 provided with a nozzle channel 34 is integrally provided. A bulging portion 82b bulged and formed in a flat hemispherical shape is provided on the upper and lower surfaces of the main body portion 82, and the inside of the bulging portion 82b serves as a liquid storage portion 82a. The main body 82 is formed of a resin material or the like in which at least the bulging portion 82b constituting the liquid storage portion 82a is flexible.

  Therefore, in the applicator 80, with the user holding the main body 82 with one hand, the bulging portion 82b (liquid storage portion 82a) is formed with the thumb and index finger, for example, as indicated by the arrow P in FIG. 10B. By pressing in the crushing direction, the liquid L can be discharged from the discharge hole 36 of the nozzle 84. Since the applicator 80 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, in each of the above embodiments, as the holding mechanisms 42 and 52, the configuration in which the insertion tube 16 can be positioned and fixed and held in the region surrounded by the arm portion 32 is exemplified. Even if the insertion tube 16 cannot be fixed inside the portion 32, any structure may be used as long as the user can stably position and hold the liquid L.

  Therefore, for example, as shown in FIG. 11, instead of the nozzles 14 (14a, 14b, 15, 74, 84), a plurality of small-diameter threads 90 are crossed between the opposing surfaces of the inner surface 32a of the arm portion 32. It is also possible to configure as a nozzle 94 provided with a holding mechanism 92 provided with a book (two in FIG. 11) and provided with a mark 91 at the intersection of each yarn 90. As the thread 90, for example, a wire such as a synthetic fiber made of a resin similar to the nozzle 14 may be used. As the mark 91, a part of the thread 90 colored or a member having a slightly larger diameter than the thread 90 may be used. It should be fixed. The thread 90 may be installed so that the mark 91 is arranged at substantially the center of the inner circle of the arm portion 32. For example, the position where the mark 91 is slightly offset from the center C of the inner circle of the arm portion 32. It is good to install so that it becomes. As a result, a concave portion (valley) directed to the opening 38 side with a predetermined angle is formed inside the arm portion 32 of the nozzle 94 by the crossing of the two yarns 90. The insertion tube 16 can be positioned and held more stably at the portion.

  Moreover, the arm part 32 should just be a shape which can surround at least one part of the insertion tube 16, and other than said ring shape (C ring shape), for example, U shape, V shape, a rhombus shape, etc. The point is that the insertion tube 16 is properly positioned and the liquid L can be appropriately applied to the insertion portion 20. In other words, the arm portion 32 may have any configuration that can surround at least a part of the insertion tube 16 and can smoothly discharge the liquid agent L to the insertion tube 16.

  Of course, the liquid agent L to be discharged / applied by the liquid agent applicator 10 may be other than a liquid agent containing a sealant containing cyanoacrylate and an antibacterial agent such as chlorhexidine and having sufficient viscosity. Any material can be used as long as it is 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 may be used. . 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, 50, 70, 80 ... Liquid agent applicator 12, 72 ... Syringe 14, 14a, 14b, 15, 74, 84, 94 ... Nozzle 16 ... Insertion tube 18 ... Biological tissue 20 ... Insertion part 32 ... Arm part 36 ... Discharge Hole 38 ... Opening 40 ... Balloon 42, 42a, 42b, 52, 92 ... Holding mechanism 54 ... Membrane 58 ... Slit

Claims (9)

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 holding mechanism for positioning and holding the insert at a predetermined position within a region surrounded by the arm portion;
A discharge hole for discharging a liquid agent for covering the insertion portion of the insert to the living tissue toward the outer peripheral surface of the insert;
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, the holding mechanism, and the discharge hole, and capable of flowing the liquid agent from the liquid storage part into the discharge hole;
A liquid applicator characterized by comprising: In the liquid applicator according to claim 2,
The discharge hole is provided in the arm portion,
The liquid agent applicator, wherein the holding mechanism is provided at a position avoiding the discharge hole of the arm portion. In the liquid agent applicator according to any one of claims 1 to 3,
The arm portion has a ring shape having an inner diameter larger than the outer diameter of the insert,
The liquid application tool, wherein the holding mechanism has a centering mechanism for positioning and holding the insert at a substantially center of a region surrounded by the arm portion. In the liquid agent applicator according to any one of claims 2 to 4,
The liquid application device, wherein the holding mechanism includes a balloon that is provided on an inner surface of the arm part and that can be expanded and contracted by the pressure of the liquid supplied from the liquid storage part. The liquid medicine applicator according to claim 5,
A plurality of the balloons are provided on the inner surface of the arm portion, and the insert is sandwiched between the expanded tips of the balloons. In the liquid agent applicator according to any one of claims 1 to 4,
The liquid agent applicator, wherein the arm portion has an opening through which an outer diameter of the insert can pass in a part of a direction surrounding the insert. The liquid medicine applicator according to claim 7,
The holding mechanism has a film body stretched on a surface intersecting the axial direction of the insert on the inner surface of the arm portion,
The liquid agent applicator, wherein the film body has a slit extending toward the opening. The liquid medicine applicator according to claim 8,
The slit is open on the opening side, closed on the opposite side to the opening side, and a hole that is wider than the slit is provided in the closed portion. Liquid applicator.

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