JP2011167341A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector having a structure capable of connecting a nozzle and a syringe hard and easy. <P>SOLUTION: A connector 10 includes an outer tube 20a mounted with a flow orifice 18a for flowing a liquid L1 through at the tip, a push rod 24a mounted with a gasket 22a capable of sliding in the outer tube 20a liquid-tightly at the tip, a syringe 14 capable of discharging the liquid L1 filled in the outer tube 20a from the flow orifice 18a, an end connection 62a capable of engaging with the flow orifice 18a of the syringe 14, and a nozzle 12 having a jet orifice 104 for emitting the liquid L1 flown from the end connection 62a outward. The syringe 14 and the nozzle 12 are connected to each other by engaging a hook member 34 mounted on the outer tube 20a to a claw member 36 mounted on the nozzle 12, furthermore, the flow path member 64 is slid in a housing 60 by pressure strength generated by engaging the flow orifice 18a to the end connection 62a in the case that the nozzle 12 is connected to the syringe 14. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a connector that enables a liquid filled in a syringe to be ejected from the nozzle by connecting the nozzle to the syringe.

  In a medical institution, for example, when administering an anti-adhesion material or a biological tissue adhesive to an affected part, the drug is diluted or dissolved with a liquid, and the drug solution is sucked and filled into the syringe, and then attached to the tip of the syringe. A nozzle is fitted and a chemical solution is ejected.

  In this way, in a connecting device that connects a nozzle and a syringe, for example, as disclosed in Patent Document 1, a spray-type device that injects a drug in a syringe from a nozzle tip with a gas, a circulation port and a nozzle base end of the syringe tip Are connected by taper fitting.

  However, when pushing the pusher of the syringe and injecting the chemical liquid from the nozzle, a considerable pressure may be generated in the internal flow path, especially when the viscosity of the chemical liquid is high, this pressure becomes even higher, There is a possibility that liquid leakage may occur from the fitting portion between the circulation port and the connection port.

JP 2009-207513 A

  In order to prevent liquid leakage at the fitting portion between the syringe and the nozzle as described above, for example, a fastening belt extending to the syringe side is provided on the nozzle, and after the syringe and the nozzle are taper fitted, the fastening belt A configuration in which the nozzle and the syringe are strongly connected by hooking the formed locking hole to the pin on the syringe side is conceivable. At this time, a ring-shaped elastic part is provided in the middle of the fastening belt, and the fitting state between the nozzle and the syringe can be more reliably maintained by the urging force of the elastic part.

  However, in the case of such a configuration using a fastening belt, after the fitting operation between the syringe and the nozzle, an operation for further fixing the fastening belt to the syringe side is required. Similarly, in the case of the configuration of Patent Document 1, a plurality of operations are necessary for the connection operation between the nozzle and the syringe, and in applications where a quicker procedure is required, the nozzle and the syringe are more firmly and A configuration that can be easily connected is desired.

  The present invention has been made in connection with such a conventional technique, and an object of the present invention is to provide a connector having a configuration capable of firmly and easily connecting a nozzle and a syringe.

  The connector according to the present invention includes an outer cylinder provided with a flow port through which liquid flows at a tip thereof, and a pusher provided with a gasket capable of sliding in a liquid-tight manner inside the outer cylinder at the tip. A syringe capable of discharging a liquid filled in a cylinder from the flow port; a connection port into which the flow port of the syringe can be fitted; and an injection port for injecting the liquid flowing from the connection port to the outside. And a nozzle that connects the nozzle to the syringe to set the liquid in a state in which the liquid can be ejected from the ejection port by advancing and retreating the pusher. And a liquid channel communicating with the connection port, an elastic member that abuts a stopper member provided in the housing, and a flow channel member movable in a connecting direction of the syringe and the nozzle, and the flow channel member Slide in the connection direction A housing that can be accommodated; and a nozzle shaft that communicates with the liquid flow path and that has the injection port provided at a tip thereof; and the syringe and the nozzle are provided on one of the outer cylinder and the housing. When the members are connected to each other by engaging a claw member provided on the other, and the nozzle is connected to the syringe, the flow channel member is fitted to the connection port. The elastic member slides in the housing due to the pressing force caused by being applied, and the elastic member is urged toward the syringe side in the housing by a repulsive force generated by contacting the stopper member. And

  According to such a configuration, the nozzle and the syringe can be easily and reliably connected by the hook member and the claw member. Further, the flow path member provided with the connection port into which the syringe flow port is fitted is slidable within the nozzle housing, and the flow path member is caused by the repulsive force generated by the elastic member coming into contact with the stopper member. Since it is biased toward the syringe inside the housing, the connection port of the nozzle and the flow port of the cylinder can be firmly fitted by the repulsive force, and the fitting is performed when the liquid is ejected from the ejection port. It is possible to prevent liquid leakage from the damaged part.

  The flow path member has a gas port facing a long hole formed in the housing, and a gas flow path for guiding gas flowing in from the gas port to the nozzle shaft. A nozzle liquid channel through which liquid from the channel circulates and a nozzle gas channel through which gas from the gas channel circulates, and the combined channel is connected to the injection port; It is possible to easily realize a configuration in which the liquid supplied from the syringe to the nozzle can be ejected while being atomized by the gas from the gas flow path.

  One of the flow port of the syringe and the connection port of the nozzle is a tapered convex portion, and the other is a tapered concave portion that can be fitted to the convex portion. The fitting operation can be performed more easily, and a strong fitting state in which liquid leakage is more reliably prevented can be obtained.

  The hook member is provided with a concave portion, and the claw member is provided with a convex portion engageable with the concave portion, and the hook member can swing in a direction in which the concave portion engages with the convex portion. A main body portion that is pivotally supported, an elastic body that urges the main body portion in a direction in which the concave portion engages with the convex portion, and a tip that is opposed to the claw member, and is able to get over the convex portion. You may have a taper surface. Thereby, since the taper surface gets over the convex part only by moving the hook member in the direction of the claw member, the concave part and the convex part can be easily engaged.

  The syringe includes a first syringe and a second syringe in which the outer cylinders are connected in parallel and base ends of the pushers are integrally connected, and the flow path member is the first syringe. And it can also be set as the structure which has a pair of connection port corresponding to each distribution port of a said 2nd syringe, and a pair of liquid flow path connected to each connection port. Then, for example, a structure in which two different kinds of liquids are mixed and ejected can be easily realized.

  In this case, a pair of the elastic members may be provided corresponding to the connection ports. Thereby, sliding of a flow-path member becomes still smoother and the fitting state with each connection port and each distribution port can be maintained still more firmly.

  According to the present invention, by connecting a nozzle to a syringe, in a connector that sets the liquid in the syringe in a state in which the liquid in the syringe can be ejected from the nozzle ejection port by advancing and retreating the pusher, the nozzle and the syringe are hook members and claw members. Can be connected easily and securely. Further, the flow path member provided with the connection port into which the syringe flow port is fitted is slidable within the nozzle housing, and the flow path member is caused by the repulsive force generated by the elastic member coming into contact with the stopper member. Since it is biased to the syringe side in the housing, the connection port of the nozzle and the circulation port of the syringe can be firmly fitted by the repulsive force, and the fitting is performed when the liquid is ejected from the ejection port. It is possible to prevent liquid leakage from the damaged part.

It is a perspective view which shows the whole structure of the connection tool which concerns on one Embodiment of this invention. It is a partial exploded perspective view of the connection tool shown in FIG. It is side surface sectional drawing to which the principal part in the state which connected the nozzle and the syringe was expanded. 4A is a partial cross-sectional plan view in a state where the nozzle and the syringe are not connected, and FIG. 4B is a partial cross-sectional plan view in a state where the nozzle and the syringe are connected from the state shown in FIG. 4A. It is the plane sectional view which expanded the tip side of a nozzle shaft in the state where liquid and gas are circulating.

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

  FIG. 1 is a perspective view showing an overall configuration of a connector 10 according to an embodiment of the present invention. FIG. 2 is a partially exploded perspective view of the connection tool 10 shown in FIG. 1, and shows the nozzle 12 constituting the connection tool 10 in an exploded state.

  The connector 10 according to this embodiment includes a syringe 14 in which a first syringe 14a and a second syringe 14b are arranged in parallel and integrally connected to each distal end of the syringe 14 so that the syringe 14 is connected to the inside of the syringe 14. It is a spray type device (applicator) provided with a nozzle 12 that ejects a filled liquid onto an application target. For example, in the case of laparoscopic surgery, the connector 10 has two types of liquid compositions supplied from a syringe 14 by inserting a long and thin nozzle shaft 16 extending in the distal direction of the nozzle 12 into the abdominal cavity. This liquid is used as a medical instrument that mixes the liquid in the nozzle 12 and applies a chemical solution, which is the mixture, to an organ, abdominal wall, or the like.

  In the following description, the width direction in FIG. 1 is called the X direction, the height direction is called the Y direction, and the extending direction of the nozzle shaft 16 is called the Z direction (axial direction). Further, the front (injection direction) of the nozzle shaft 16 is referred to as the Z1 direction or the front end, the rear (the syringe 14 side) of the nozzle shaft 16 is referred to as the Z2 direction or the base end (rear end), and the connector 10 is viewed from the front end side. The right side is called the X1 direction, the left side is called the X2 direction, the upper side is called the Y1 direction, and the lower side is called the Y2 direction. Note that these directions are for convenience of explanation, and it is needless to say that the connector 10 can be used in any direction (for example, upside down).

  As shown in FIG.1 and FIG.2, the syringe 14 is equipped with the 1st syringe 14a and the 2nd syringe 14b corresponding to two types of liquids which are mixed and injected by the nozzle 12, and liquid L1 is supplied to the 1st syringe 14a. The second syringe 14b is filled and filled with the liquid L2. In the case of the present embodiment, the first syringe 14a and the second syringe 14b have substantially the same configuration except that their outer diameters and excluded volumes are different. The second syringe 14b will be described with the reference numeral (number) of the corresponding component of the first syringe 14a appended with “b”, and detailed description thereof will be omitted. Of course, you may comprise the 1st syringe 14a and the 2nd syringe 14b with the same diameter.

  The first syringe 14a includes an outer cylinder (cylinder) 20a having a reduced-diameter distribution port (discharge port) 18a provided at the tip, a gasket 22a that can be slid liquid-tightly in the outer cylinder 20a, and a gasket 22a. And a pusher (plunger rod) 24a that moves in the axial direction (Z direction) of 20a. The circulation port 18a is an opening for allowing the liquid to flow inside and outside the outer cylinder 20a, and is a tapered tapered protrusion protruding from the front end surface of the outer cylinder 20a.

  A thin plate ellipse-shaped flange 26 is formed on the outer periphery of the base end edge of the outer cylinder 20a so as to put an index finger, a middle finger or the like when the operator operates the pusher 24a, and the flange 26 is connected to the second syringe 14b. Is formed integrally with the outer periphery of the base end edge of the outer cylinder 20b. A guide member 28 that guides the forward and backward movement of the pushers 24a and 24b is fitted into the proximal end side opening of each of the outer cylinders 20a and 20b. You may provide the scale (not shown) which shows a liquid quantity in the outer peripheral surface of the outer cylinder 20a (20b).

  The material of the outer cylinder 20a (20b) is not particularly limited. For example, polyvinyl chloride, polyethylene, polypropylene, cyclic polyolefin, polystyrene, poly- (4-methylpentene-1), polycarbonate, acrylic resin, acrylonitrile-butadiene -Resins such as styrene copolymer, polyester such as polyethylene terephthalate, polyethylene naphthalate, butadiene-styrene copolymer, polyamide (for example, nylon 6, nylon 6,6, nylon 6,10, nylon 12) may be used. However, considering ease of molding and low water vapor permeability, polypropylene, cyclic polyolefin, polyester, and the like are preferable. In addition, it is preferable that the outer cylinder 20a is transparent or semi-transparent in order to ensure internal visibility.

  The pusher 24a is a long rod whose cross section orthogonal to the axial direction (Z direction) is formed in a cross shape, and the cross shaped guide hole 28a that penetrates the first syringe 14a side of the guide member 28 in the axial direction. Is inserted. Similarly, the pusher 24b is inserted into a cross-shaped guide hole 28b that penetrates the second syringe 14b side of the guide member 28 in the axial direction.

  The bases of the pushers 24a and 24b are integrally connected by a bridge 24c, and are configured in a substantially U shape as a whole. That is, the advance / retreat operation of the pushers 24a and 24b is integrated by a common operation portion (operation disk) 24d provided in the bridge 24c (see FIG. 2). The material of the pusher 24a (24b) may be the same as that of the outer cylinder 20a described above. However, in order to improve the visibility in the transparent outer cylinder 20a, it is preferable that the material is non-transparent.

  The gasket 22a is formed of, for example, an elastic material, and is a piston that is slidable in a liquid-tight manner in close contact with the inner peripheral surface of the outer cylinder 20a by being connected to the tip of the pusher 24a. The gasket 22a can suck and fill the liquid L1 into the chamber formed on the tip side (Z1 side) from the circulation port 18a, and can push out the filled liquid L1 from the circulation port 18a.

  The material of the gasket 22a (22b) is not particularly limited. For example, various rubber materials such as natural rubber, butyl rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, silicone rubber, polyurethane, polyester, and polyamide are used. It is preferable to use elastic materials such as various thermoplastic elastomers such as olefins and styrenes, or mixtures thereof.

  The 2nd syringe 14b is the structure substantially the same as the above-mentioned 1st syringe 14a, is equipped with the distribution port 18b, the outer cylinder 20b, the gasket 22b, and the pusher 24b, and the flange 26 and the guide member 28 are made into 1st. It is shared with the syringe 14a.

  The first syringe 14 a and the second syringe 14 b are connected at the base end side by a flange 26, and a portion from the center to the tip end is connected by a flat connecting portion 30. The connecting portion 30 is provided with a hook member 34 constituting an engagement mechanism (lock mechanism) 32 that locks and unlocks the nozzle 12 when the nozzle 12 is attached to and detached from the syringe 14 (see FIG. 3). The engagement mechanism 32 includes a hook member 34 and a claw member 36 on the nozzle 12 side with which the hook member 34 is engaged. As shown in FIG. 3, a guide claw 37 that guides the engaging operation of the hook member 34 and the claw member 36 in the Z direction is provided on the surface (Y2 direction surface) opposite to the hook member 34 in the connecting portion 30. It has been.

  The hook member 34 includes a substantially T-shaped main body 38 in a side view shown in FIG. 3 and a thin plate-like elastic piece (elastic body) extending obliquely downward (Z2 direction and Y2 direction) from the base end of the main body 38. 40).

  The main body 38 is a thin plate in which pins 42, 42 protruding from both sides in the width direction (X direction) protrude upward (Y1 direction) from both sides in the X direction of the connecting portion 30. It is pivotally supported with respect to the mounting holes 46 and 46, and can swing in the directions of arrows θ1 and θ2 (see the two-dot chain line in FIG. 3). A taper surface 48 for the hook member 34 to ride over the claw member 36 on the nozzle 12 side in the Z direction is provided at the tip of the main body portion 38, and a convex portion 50 of the claw member 36 is provided behind the taper surface 48. And a recess 52 that can be engaged with each other. The elastic piece 40 is a leaf spring-like member that is curved toward the inner surface side (Z1 direction and Y2 direction), has an end landed on the connecting portion 30, and can slide on the connecting portion 30. The main body 38 that swings around the pin 42 as a rotation axis is urged in the direction of the arrow θ1.

  The main body portion 38 is further provided with a flat plate-like regulating member 54 that protrudes downward from the pin 42 on the distal end side (Z1 side). In the state where the hook member 34 is not engaged with the claw member 36, the regulating member 54 has the Z2 side surface abutting against the Z1 side surface of the support member 44. The position of the tapered surface 48 at the tip is prevented from being lowered too much in the Y2 direction.

  Therefore, when the nozzle 12 is attached to the syringe 14, that is, when the hook member 34 and the claw member 36 are brought close to each other in the Z direction and engaged with each other, the tapered surface 48 is formed on the claw member 36 under the action of the regulating member 54. The corners of the protrusions 50 can be reliably brought into contact with each other. Thereby, in the engagement mechanism 32, the hook member 34 resists the urging force of the elastic piece 40 while the taper surface 48 slides on the convex portion 50 only by moving the hook member 34 and the claw member 36 in the proximity direction. Therefore, since the taper surface 48 reliably gets over the convex portion 50, the convex portion 50 and the concave portion 52 can be easily engaged with each other (see FIG. 3).

  Note that reference numeral 56 in FIG. 3 indicates that the operator moves the main body 38 in the direction of the arrow θ2 against the urging force of the elastic piece 40 when the engagement state between the hook member 34 and the claw member 36 is released. This is a lateral groove for displaying a part to be operated (pressed) for swinging and preventing slipping of an operator's fingertip or the like in the operation.

  The material of the hook member 34 may be the same as that of the outer cylinder 20a described above. The elastic piece 40 may be formed integrally with the main body portion 38 or may be formed separately, but can generate a desired elastic force by appropriately setting its curved shape, plate thickness, and the like. Of course, instead of the elastic piece 40, a coil spring or a torsion spring may be used.

  In such a syringe 14, the liquid L <b> 1 filled in the first syringe 14 a and the liquid L <b> 2 filled in the second syringe 14 b may be appropriately selected according to the use or purpose of use of the connector 10. For example, when used for administration of a biological tissue adhesive, one of the liquid L1 and liquid L2 is a liquid containing thrombin (solution or the like), and the other is a liquid containing fibrinogen (solution or the like). Can do. Further, for example, when the connector 10 is used for administration of an adhesion preventing material, one of the liquid L1 and the liquid L2 is a liquid (solution or the like) containing carboxymethyldextrin modified with a succinimidyl group, and the other is a phosphorous. The liquid (solution etc.) containing disodium oxyhydrogen can be mentioned.

  The liquid L1 and the liquid L2 in such a combination are altered, that is, gelled (solidified) when they are mixed. By gelling, for example, a liquid medicine (mixture, liquid mixture) in which the liquid L1 and the liquid L2 are mixed can be reliably retained on the applied biological tissue (target site), and the biological tissue adheres to the target site. The function as a material and an adhesion prevention material can be surely exhibited. Of course, the types and combinations of the liquid L1 and the liquid L2 are not limited to those exemplified above.

  On the other hand, as shown in FIGS. 1 and 2, the nozzle 12 is housed in a housing 60 having a pair of upper housing 60a and lower housing 60b that are divided into two vertically and in a state that can move forward and backward in the Z direction. And a flow path member (moving member) 64 provided on the base end surface with connection ports 62a and 62b into which the respective flow ports 18a and 18b of the syringe 14 are fitted, and projecting from the flow path member 64 to the outside of the housing 60 to the distal direction. And a nozzle shaft 16 extending in the direction. The housing 60 may be an integral structure instead of a divided structure.

  The housing 60 has a substantially triangular shape that is tapered in plan view (see also FIG. 4A). A circular opening 66 through which the nozzle shaft 16 passes and slides is formed at the distal end, and a flow path member 64 is formed at the proximal end. It is a box-shaped member in which a rectangular opening 68 is formed so as to be able to appear and disappear.

  On the inner wall surface of the upper housing 60a, a pair of concave pins 70, 70 projecting toward the lower housing 60b and a pair of concave pins 72, 72 are provided. Similarly, a pair of convex pins 74 and 74 and a pair of convex pins 76 and 76 projecting toward the upper housing 60a are provided on the inner wall surface of the lower housing 60b. Further, an upper protruding piece 36a protruding in the Z2 direction and bent in the Y direction is provided at the base end of the upper housing 60a, and a lower protruding piece 36b protruding in the Z2 direction is provided at the base end of the lower housing 60b. It is done. Accordingly, the convex pins 74 and 76 engage with the concave pins 70 and 72, respectively, and the convex portion 78 on the base end surface of the lower protruding piece 36b engages with the concave portion 80 inside the convex portion 50 of the upper protruding piece 36a. Thus, the claw member 36 is formed at the same time as the housing 60 is formed.

  As shown in FIG. 4A, in the case of this embodiment, the diameters of the first syringe 14a and the second syringe 14b are different, and the position of the hook member 34 in the X direction is slightly on the X2 side in the width direction of the syringe 14, The position of the claw member 36 with which the hook member 34 engages is also provided on the X2 side slightly from the center in the X direction.

  As shown in FIGS. 2, 3 and 4A, the flow path member 64 is formed with a substantially rectangular through hole 82 passing through the center in the Y direction, and a relief recess 83 avoiding the claw member 36 is formed at the base end. The flat rectangular block is formed with a pair of connection ports 62a and 62b on the base end face. An outlet port 84 into which the nozzle shaft 16 is inserted / connected is protruded in the Z1 direction at the distal end surface of the flow path member 64, and a tube 86a from the gas supply source 86 is inserted / connected at the lower surface. An inlet port (gas port) 88 is projected in the Y2 direction. The inlet port 88 is inserted through a hole (long hole) 89 formed in the lower housing 60b.

  As can be understood from FIGS. 4A and 4B, the flow path member 64 is accommodated in the housing 60 and can advance and retreat in the Z direction along the inner wall surface of the housing 60.

  In the through hole 82 of the flow path member 64, a support plate 90 extending in the width direction (X direction) center in the Z direction is provided, and a pair of elastic members 92a and 92b are arranged in both sides (X Protruding in the direction). The elastic members 92a and 92b are cantilever beams inclined from the X direction to the Z1 direction in a plan view shown in FIG. 4A, and are plate spring-like members protruding from the support plate 90. The elastic members 92a and 92b are disposed in the through hole 82 in a state where one surface (side surface Z1) thereof can contact the concave pin 70 and the convex pin 74 inserted in the through hole 82 in the Y direction (see FIG. 4A). As the elastic members 92a and 92b, a coil spring or the like may be used in addition to the plate spring-like member.

  Therefore, as shown in FIG. 4A, the flow path member 64 has the concave pin 70 and the convex pin 74 inserted through the through hole 82 in a state where the nozzle 12 and the syringe 14 are separated without being connected. Therefore, rattling and displacement of the flow path member 64 are minimized by the concave pin 70 and the convex pin 74 between the Z1 side surface of the elastic members 92a and 92b and the Z2 side surface of the through hole 82. Further, the concave pin 70, the convex pin 74 and the claw member 36 prevent the flow path member 64 from coming off from the opening 68.

  On the other hand, as shown in FIG. 4B, when the nozzle 12 and the syringe 14 are connected, the flow path member 64 is used when the flow ports 18a and 18b of the syringe 14 are fitted to the connection ports 62a and 62b. Due to the pushing force in the Z1 direction, it moves relative to the housing 60 toward the Z1 side. At the same time, the elastic members 92a and 92b come into contact with the concave pins 70 and the convex pins 74 that function as stopper members for the flow path member 64, and the repulsive force (biasing force) generated when the elastic members 92a and 92b are elastically deformed. The fitting strength between 18b and each of the connection ports 62a and 62b is increased, and an appropriate wearing feeling (load) is given to the operator.

  Further, after the connection is completed, the flow path member 64 is connected to the hook member 34, the claw member 36, and the like by the repulsive force due to the elastic members 92 a and 92 b abutting against the concave pins 70 and 74 and elastically deforming. Are held in a state of receiving a biasing force in the Z2 direction from the housing 60 whose position in the Z direction is fixed under the engaging action. For this reason, the firm fitting state between each flow port 18a, 18b of the syringe 14 and each connection port 62a, 62b of the flow path member 64 is maintained.

  In such a flow path member 64, a first liquid flow path 94a penetrating in the Z1 direction from the connection port 62a, a second liquid flow path 94b penetrating in the Z1 direction from the connection port 62b, an inlet port 88, and A bent gas flow path 96 communicating between the outlet ports 84 is formed (see FIGS. 3 and 4A). Therefore, the connection ports 62a and 62b, which are openings for flowing the liquids L1 and L2 from the syringe 14 side to the respective liquid flow paths 94a and 94b, are flow ports 18a and 18b formed as tapered convex portions. It is formed as a narrow tapered recess capable of taper fitting.

  The nozzle shaft 16 is a thin and long tube. A nozzle head 97 having an enlarged diameter is provided at the distal end, and a proximal end is connected to the outlet port 84 of the flow path member 64 in the housing 60. In the nozzle shaft 16, as shown in FIGS. 2, 4A and 5, a first nozzle liquid flow path 98a through which the liquid L1 supplied from the first syringe 14a and passed through the first liquid flow path 94a circulates; The second nozzle liquid channel 98b through which the liquid L2 supplied from the second syringe 14b and passed through the second liquid channel 94b flows, and the gas G supplied from the gas supply source 86 and passed through the gas channel 96 are supplied. A nozzle gas flow path 100 that circulates is provided.

  The first and second nozzle liquid flow paths 98a and 98b through which the liquids L1 and L2 circulate are connected to the first and second liquid flow paths 94a and 94b formed in the flow path member 64, respectively. Then, the nozzle shaft 16 is drawn into the nozzle shaft 16 from the middle (see FIGS. 2 and 4A). Further, the first and second nozzle liquid channels 98 a and 98 b extend in the tip direction in the nozzle shaft 16, and then merge with each other in a merge channel 102 disposed in the vicinity of the nozzle head 97. Each nozzle liquid channel 98a, 98b is integrally joined at the base end of the combined channel 102 at the tip of each nozzle, thereby allowing the liquid L1 and the liquid L2 to be mixed uniformly and reliably. The front end of the combined flow path 102 is connected to the ejection port 104 opened at the front end of the nozzle head 97.

  The nozzle gas flow path 100 through which the gas G flows is constituted by a lumen of the nozzle shaft 16 which is an outer tube connected to the outlet port 84 of the flow path member 64, and includes first and second nozzle liquid flow paths 98a, The portion where 98b and the combined flow path 102 are arranged as an inner tube is formed by a gap formed around these.

  Therefore, as shown in FIG. 5, the wall surface of the combined flow path 102 is formed of a gas permeable membrane through which the gas G can pass and liquid cannot pass, so that the gas G flowing through the nozzle gas flow path 100 is Flows into the inside of the tube wall. Thereby, the liquid mixture of the liquids L1 and L2 flowing through the combined flow path 102 is atomized by being injected from the injection port 104 together with the gas G flowing in from the surroundings, and is uniformly applied to the target site (affected part). The

  As understood from FIGS. 4A and 4B, the nozzle shaft 16 including the first and second nozzle liquid flow paths 98a and 98b is arranged in the Z direction of the flow path member 64 when the nozzle 12 and the syringe 14 are attached and detached. Along with the advancing / retreating operation, the advancing / retreating in the Z direction can be performed in the opening 66 at the front end of the housing 60. The inlet port 88 protruding from the flow path member 64 is substantially the same and can move in the hole 89 in the Z direction. Therefore, the shape of the hole 89 is an elongated hole having an inner diameter through which the inlet port 88 or the tube 86a can be inserted and extending so that the length in the Z direction corresponds to the amount of movement of the flow path member 64. Good. The long hole includes, for example, an ellipse, a large-diameter circle in consideration of the amount of movement of the flow path member 64, and the like other than the one having only a long length in the Z direction.

  The material of the first and second nozzle liquid flow paths 98a, 98b and the nozzle shaft 16 is not particularly limited. For example, polyvinyl chloride, polyethylene, polypropylene, cyclic polyolefin, polystyrene, poly- (4-methylpentene-1) , Polycarbonate, acrylic resin, acrylonitrile-butadiene-styrene copolymer, polyester such as polyethylene terephthalate, polyethylene naphthalate, butadiene-styrene copolymer, polyamide (for example, nylon 6, nylon 6,6, nylon 6,10, Various soft or hard resins such as nylon 12), natural rubber, butyl rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, various rubber materials such as silicone rubber, polyurethane, polyester, polyamide Olefin, various thermoplastic elastomers of styrene such as, stainless steel, aluminum, various metal materials such as copper or copper-based alloy, various kinds of glass, alumina, various ceramics such as silica and the like.

  In addition, a large number of pores (not shown) penetrating the inside and outside of the tube wall are formed in the joint channel 102 to form the gas permeable membrane. The average pore diameter of these pores is not particularly limited, but is preferably 2 μm or less, for example. Thus, the combined flow path 102 that functions as a gas permeable membrane is impermeable (water repellency) to the liquids L1 and L2, that is, has hydrophobicity.

  Therefore, it is preferable to use a hydrophobic material or a material whose surface has been subjected to a hydrophobic treatment for the combined channel 102. Examples of the hydrophobic material include polytetrafluoroethylene (PTFE), tetra Copolymer of fluoroethylene and hexafluoropropylene (FEP), copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether (PFA), polychlorotrifluoroethylene (PCTFE), polyvinylidene fluoride (PVDF), ethylene and tetrafluoro Examples include ethylene copolymer (ETFE), ethylene and chlorotrifluoroethylene copolymer (ECTFE), polypropylene (PP), and the like. These materials can be drawn, microphase separation, electron beam etching, Porous materials such as sintering and argon plasma particles Ones are preferably used. Moreover, it does not specifically limit as a method of hydrophobic treatment, For example, the method of coating the material which has the said hydrophobicity on the surface of the combined flow path 102, etc. are mentioned.

  As the gas supply source 86 (see FIG. 1), for example, a gas cylinder in which the internal space is filled with a high-pressure gas G may be used, and a gas to the inlet port 88 is provided in the middle of the gas supply source 86 or the tube 86a. An on-off valve or the like for turning on / off the supply of G may be provided. For example, carbon dioxide may be used as the gas G.

  Next, the connection operation and effect | action of the nozzle 12 and the syringe 14 in the connection tool 10 comprised as mentioned above are demonstrated.

  First, predetermined liquids L1 and L2 are filled in the outer cylinders 20a and 20b of the first and second syringes 14a and 14b, respectively. These liquids L1 and L2 may be appropriately selected according to the use of the connector 10, the application target, and the like, such as a combination of the liquid containing thrombin and the liquid containing fibrinogen exemplified above.

  The filling method of the liquids L1 and L2 into the outer cylinders 20a and 20b is not particularly limited. For example, the circulation ports 18a and 18b of the syringes 14a and 14b are used as two vials containing the liquids L1 and L2, respectively. Each of the pushers 24a and 24b is retracted in the outer cylinders 20a and 20b by pulling the operation portion 24d, and the liquids L1 and L2 in the liquid container are retreated. , 18b and the like. In addition, as the liquid container, for example, as disclosed in Japanese Patent Application Laid-Open No. 2009-153720, a container containing powder and a container containing liquid are communicated by a double-ended needle, and the powder is dissolved in the liquid. It is also possible to apply a method of attaching the syringe 14 to the liquid container containing the dissolved solution via a predetermined mounting member and sucking the dissolved solution.

  Next, the nozzle 12 is connected to the tip of the syringe 14 in which the liquids L1 and L2 are filled in the syringes 14a and 14b, respectively. That is, as shown in FIG. 4A, the nozzle 12 and the syringe 14 are aligned so that the connection ports 62a and 62b and the flow ports 18a and 18b face each other, and as shown in FIG. And the syringe 14 are pushed in the proximity direction, and the circulation ports 18a and 18b are fitted into the connection ports 62a and 62b.

  In the connection operation between the nozzle 12 and the syringe 14, first, each flow port that is a tapered convex portion of the syringe 14 with respect to each connection port 62 a and 62 b that is a tapered concave portion of the flow path member 64. 18a and 18b are inserted, the taper surfaces of each other are brought into contact with each other, and the pushing operation of the syringe 14 and the nozzle 12 is continued even after the contact.

  4A and 4B, the flow path member 64 receives the pushing force in the Z1 direction from the syringe 14 and slides in the Z1 direction relative to the housing 60, thereby elastic member. 92a and 92b abut against the stopper members (concave pin 70 and convex pin 74) and start elastic deformation. Therefore, although the flow path member 64 receives a repulsive force in the Z2 direction from the housing 60 due to the elastic deformation of the elastic members 92a and 92b, when the syringe 14 is further pushed in the Z1 direction with respect to the nozzle 12, the connection port 62a, 62b and the circulation ports 18a and 18b are firmly and surely taper-fitted with an appropriate wearing feeling (resistance feeling) due to the repulsive force.

  At the same time, as can be understood from FIGS. 3, 4A and 4B, the hook member 34 has a tapered surface 48 at the tip abutting against the convex portion 50 of the claw member 36 and resisting the biasing force of the elastic piece 40. Thus, the taper surface 48 gets over the convex portion 50 while being swung in the direction of the arrow θ2, and the concave portion 52 and the convex portion 50 are engaged with each other. Also at this time, since the tapered surface 48 of the hook member 34 overcomes the urging force of the elastic piece 40 and overcomes the convex portion 50, and the convex portion 50 and the concave portion 52 engage with each other, an appropriate wearing feeling (resistance feeling) The hook member 34 and the claw member 36 can be firmly and securely engaged with each other.

  As described above, in the connection tool 10 according to the present embodiment, the nozzle 12 and the syringe 14 are simply operated by simply positioning the connection ports 62a and 62b and the flow ports 18a and 18b and pushing them in the proximity direction. The fitting operation of the connection ports 62a and 62b and the flow ports 18a and 18b and the engaging operation of the hook member 34 and the claw member 36 are performed simultaneously. That is, in the connection tool 10, the nozzle 12 and the syringe 14 can be easily and reliably connected by substantially only one operation (one action) of pushing the nozzle 12 and the syringe 14. At this time, since the connection ports 62a and 62b and the flow ports 18a and 18b are connected by taper fitting, positioning at the time of connection and mutual fitting operation can be performed more easily, and liquid leakage It is possible to obtain a strong fitting state that more reliably prevents the above.

  4B, the flow path member 64 is attached to the housing 60 (and the syringe 14 engaged with the housing 60 by the hook member 34) in the Z2 direction by the elastic members 92a and 92b. Continue to receive power. For this reason, since the circulation ports 18a and 18b and the connection ports 62a and 62b continue to receive a biasing force in the direction in which the fitting state is maintained (direction in which they are close to each other in the Z direction), the fitting state is further strengthened. Can be maintained. At this time, since the pressing force in the Z1 direction by the elastic members 92a and 92b is applied to the concave pin 70 and the convex pin 74 which are stopper members, the concave portion 52 of the hook member 34 and the claw member 36 The protrusions 50 are firmly pulled from each other because the forces in the direction away from each other are maintained in the Z direction, and the hook member 34 is further moved in the direction of the arrow θ1 in FIG. Therefore, the engaged state is more firmly maintained.

  Therefore, according to the connector 10, after the nozzle 12 is connected to the syringe 14, the operation portion 24d is pushed in the Z1 direction, and the liquids L1 and L2 filled in the syringes 14a and 14b are supplied to the circulation ports 18a and 18b. The taper fits even when the pressure in each flow path rises considerably when it is circulated through the connection ports 62a and 62b to the respective liquid flow paths 94a and 94b and further to the ejection port 104. The occurrence of liquid leakage from the portion is effectively prevented, and the liquid mixture of the liquids L1 and L2 and the gas G can be smoothly ejected from the ejection port 104.

  Thereafter, when the connection state of the nozzle 12 and the syringe 14 is released and separated from each other, the lateral groove 56 at the proximal end of the hook member 34 is pushed downward with, for example, a thumb, and the hook member 34 is attached to the elastic piece 40. It is swung in the direction of the arrow θ2 in FIG. 3 against the force. At substantially the same time, while maintaining the pushing state of the hook member 34 with the thumb, the nozzle 12 and the syringe 14 are pulled apart, for example, in a direction away from each other with the right hand and the left hand, so By pulling out, the nozzle 12 and the syringe 14 can be easily separated.

  Further, in the connector 10, a through hole 82 that penetrates the flow path member 64 in the Y direction is provided, and a stopper member (concave pin 70 and convex pin 74) is inserted into the through hole 82 (FIG. 4A and FIG. 4). (See FIG. 4B). That is, since the concave pin 70 and the convex pin 74 are between the inner wall surface of the through hole 82 and the side surfaces of the elastic members 92a and 92b, the flow path member is in a state where the nozzle 12 and the syringe 14 are not connected. 64 is suppressed, and the channel member 64 is reliably prevented from coming off from the housing 60 (see FIG. 4A). On the other hand, in a state where the nozzle 12 and the syringe 14 are connected, the elastic members 92 a and 92 b abut on the concave pin 70 and the convex pin 74, so that the flow path member 64 appropriately receives the repulsive force from the housing 60. (See FIG. 4B).

  In other words, the passage member 64 is provided with the through hole 82 in which the stopper member is inserted and the elastic members 92a and 92b are arranged, thereby preventing the passage member 64 from coming off from the housing 60 and preventing rattling. The elastic sliding of the member 64 and the regulation of the sliding range are realized with a simple and compact structure. In particular, with respect to the flow path member 64 in which the liquid flow paths 94a and 94b and the gas flow path 96 are formed, the elastic members 92a and 92b, the concave pins 70, and the convex pins 74 are provided in the through holes 82, The dimension of the flow path member 64 in the Z direction can be further reduced, and the size of the housing 60 can be minimized. Of course, the through-hole 82 is not provided, and for example, the elastic members 92a and 92b may be provided on the Z1 side surface of the flow path member 64.

  As understood from FIGS. 4A and 4B, the connector 10 is provided with a support plate 90 extending substantially in the Z direction in the width direction of the through-hole 82, and the first and second syringes 14 a are provided from the support plate 90. , 14b, elastic members 92a, 92b are extended in the respective axial directions. Accordingly, the pushing force in the Z1 direction from the syringe 14 to the flow path member 64 and the repulsive force in the Z2 direction by the elastic members 92a and 92b are appropriately balanced in the width direction (X direction) of the flow path member 64. Therefore, the sliding of the flow path member 64 in the Z direction can be made smoother.

  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, although the hook member 34 is provided on the syringe 14 side and the claw member 36 is provided on the nozzle 12 side in the above embodiment, the hook member 34 is provided on the nozzle 12 side, and the claw member 36 is provided on the syringe 14 side. It is good also as a structure provided in.

  Of course, the syringe 14 may have a configuration other than the two configuration using the first syringe 14a and the second syringe 14b as described above, and may be one or three or more. Of course, when the number of syringes 14 is changed, the number of connection ports of the flow path member 64 and the number of liquid flow paths may be appropriately changed.

  As the stopper member for restricting the operation of the flow path member 64, the configuration using the concave pin 70 and the convex pin 74 for engaging the upper housing 60a and the lower housing 60b is illustrated above, but only the stopper member is illustrated. Needless to say, pins and the like used in the above may be separately provided on the inner surface of the housing 60.

DESCRIPTION OF SYMBOLS 10 ... Connector 12 ... Nozzle 14 ... Syringe 14a ... 1st syringe 14b ... 2nd syringe 16 ... Nozzle shaft 18a, 18b ... Distribution port 20a, 20b ... Outer cylinder 22a, 22b ... Gasket 24a, 24b ... Pusher 34 ... Hook Member 36 ... Claw member 60 ... Housing 62a, 62b ... Connection port 64 ... Flow path member 70, 72 ... Concave pin 74, 76 ... Convex pin 82 ... Through hole 89 ... Hole 90 ... Support plate 92a, 92b ... Elastic member 94a ... 1st liquid flow path 94b ... 2nd liquid flow path 96 ... Gas flow path 98a ... 1st nozzle liquid flow path 98b ... 2nd nozzle liquid flow path 100 ... Nozzle gas flow path 102 ... Combined flow path 104 ... Injection port

Claims (6)

An outer cylinder having a flow port through which liquid flows is provided at the tip, and a pusher provided with a gasket capable of sliding in a liquid-tight manner inside the outer cylinder, and the liquid filled in the outer cylinder is A syringe capable of being discharged from the circulation port;
A nozzle having a connection port into which the flow port of the syringe can be fitted, and an injection port for injecting the liquid flowing in from the connection port to the outside;
And connecting the nozzle to the syringe to set the liquid in a state in which the liquid can be ejected from the ejection port by advancing and retreating the pusher,
The nozzle is provided with a liquid channel that communicates with the connection port and the connection port, and an elastic member that abuts against a stopper member provided in a housing, and is a channel that is movable in the connection direction of the syringe and the nozzle. Members,
The housing for slidably storing the flow path member in the connection direction;
A nozzle shaft in communication with the liquid flow path and provided with the injection port at the tip;
With
The syringe and the nozzle are connected to each other by a hook member provided on one of the outer cylinder and the housing engaging a claw member provided on the other,
Further, when the nozzle is connected to the syringe, the flow path member slides within the housing by a pressing force generated when the flow port is fitted to the connection port, and the elastic member is The connector according to claim 1, wherein the connector is biased toward the syringe in the housing by a repulsive force generated by abutting against the stopper member. The connector according to claim 1, wherein
The flow path member has a gas port facing a long hole formed in the housing, and a gas flow path for guiding the gas flowing in from the gas port to the nozzle shaft,
The nozzle shaft has a joint channel that joins a nozzle liquid channel through which liquid from the liquid channel circulates and a nozzle gas channel through which gas from the gas channel circulates. A connector characterized by being connected to a mouth. The connection tool according to claim 1 or 2,
One of the flow port of the syringe and the connection port of the nozzle is a tapered convex portion, and the other is a tapered concave portion that can be fitted to the convex portion. The connection tool according to any one of claims 1 to 3,
The hook member is provided with a concave portion, and the claw member is provided with a convex portion engageable with the concave portion,
The hook member includes a main body that is pivotally supported in a direction in which the concave portion engages with the convex portion, and an elastic body that urges the main body portion in a direction in which the concave portion engages with the convex portion. And a tapered surface provided at a tip facing the claw member and capable of getting over the convex portion. In the connecting tool according to any one of claims 1 to 4,
The syringe has a first syringe and a second syringe in which the outer cylinders are connected in parallel and the proximal ends of the pushers are integrally connected,
The said flow path member has a pair of connection port corresponding to each distribution port of a said 1st syringe and a said 2nd syringe, and a pair of liquid flow path connected to each connection port, The connection tool characterized by the above-mentioned. The connector according to claim 5, wherein
A pair of the elastic members are provided corresponding to the connection ports, respectively.

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