WO2013140858A1 - 接続装置及び血液成分分離装置 - Google Patents
接続装置及び血液成分分離装置 Download PDFInfo
- Publication number
- WO2013140858A1 WO2013140858A1 PCT/JP2013/051861 JP2013051861W WO2013140858A1 WO 2013140858 A1 WO2013140858 A1 WO 2013140858A1 JP 2013051861 W JP2013051861 W JP 2013051861W WO 2013140858 A1 WO2013140858 A1 WO 2013140858A1
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- WIPO (PCT)
- Prior art keywords
- connection device
- syringe
- hollow needle
- engaging
- end side
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
- A61M5/31515—Connection of piston with piston rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3202—Devices for protection of the needle before use, e.g. caps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3275—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel being connected to the needle hub or syringe by radially deflectable members, e.g. longitudinal slats, cords or bands
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/02—Blood transfusion apparatus
- A61M1/029—Separating blood components present in distinct layers in a container, not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/326—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
- A61M2005/3267—Biased sleeves where the needle is uncovered by insertion of the needle into a patient's body
- A61M2005/3268—Biased sleeves where the needle is uncovered by insertion of the needle into a patient's body having cantilever elastically spreadable arms, e.g. to accumulate energy during needle uncovering movement for urging protection sleeve to return to needle covering position
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
Definitions
- the present invention relates to a connection device used in a blood component separation device for obtaining components such as platelet-rich plasma from blood by centrifugation, and a blood component separation device provided with this connection device.
- red blood cells, white blood cells, and platelets are separated and used for raw materials and treatment of blood products. It may be separated and used in the state of platelet rich plasma (PRP), which is a plasma rich in platelets.
- PRP platelet rich plasma
- Whole blood containing blood cell components contains about 95% red blood cells, 3% white blood cells, and about 1% platelets.
- platelet-rich plasma contains a high percentage of platelets.
- the ratio of platelets in platelet-rich plasma is not particularly defined. In general, considering that the proportion of plasma in whole blood is about 55%, the proportion of platelets contained in plasma from which blood cell components have been removed is considered to be about 2%. Platelet-rich plasma contains a proportion of platelets clearly higher than about 2%.
- growth factors such as PDGF, TGF- ⁇ , and ILGF are present in ⁇ granules of platelets. It is noted that these growth factors play an effective role in wound healing and tissue regeneration.
- platelet-rich plasma is expected to be used in regenerative medicine such as periodontal tissue regeneration (see Patent Document 1, Patent Document 2, and Non-Patent Document 1).
- Patent Document 3 discloses a syringe for obtaining platelet-rich plasma.
- This syringe has a syringe cylinder in which a blood collection needle and a cap are attached to and detached from a port, a gasket disposed in an internal space of the syringe cylinder, and a plunger that can be attached to and detached from the gasket.
- blood is first collected by attaching a blood collection needle to the syringe cylinder and attaching a plunger to the gasket. After blood collection, remove the blood collection needle and attach the cap. At this time, if necessary, the plunger is removed from the gasket. In this state, the syringe cylinder is attached to the centrifugal separator and weak centrifugation is performed. By weak centrifugation, whole blood is separated into a lower red blood cell fraction and an upper plasma containing white blood cells and platelets. Next, the plunger is attached to the gasket, the cap is removed, and the lower red blood cell fraction is discharged from the syringe cylinder. After that, the cap is attached.
- the plunger is removed from the gasket.
- the syringe cylinder is attached to the centrifuge and strong centrifugation is performed.
- strong centrifugation the plasma is separated into lower platelet-rich plasma and supernatant.
- the plunger is attached and the cap is removed, and the platelet-rich plasma is discharged from the syringe to obtain platelet-rich plasma.
- a hollow needle and a connecting device are attached to and detached from a syringe that sucks plasma and supernatant.
- the hollow needle passes through the gasket of the syringe to be aspirated and is brought into contact with plasma or supernatant.
- the connecting device moves by pushing the gasket of the syringe to be sucked.
- the user may accidentally pierce the finger or the like with the hollow needle. As a result, there is a problem that the user may be injured or there is a risk of infection from blood.
- the present invention has been made in view of the above-described problems, and an object of the present invention is to provide means for preventing a user from accidentally piercing a hollow needle in the use of a blood component separation device. It is in.
- the connecting device includes a cylindrical first member having a first internal space that extends in the longitudinal direction and opens to both ends, and a hub that can be connected to a syringe port is based on the first member.
- a hollow needle provided on the end side, extending from the hub to the first internal space of the first member toward the distal end side, and a second internal space extending in the longitudinal direction and opening to both end sides;
- a second member that is provided on a distal end side of the first member so that the second inner space is continuous with the first inner space, and is movable relative to the first member in the longitudinal direction. is doing.
- the second member is movable between a first position where the tip of the hollow needle is accommodated in the second internal space and a second position where the tip of the hollow needle is exposed from the second internal space.
- the first member is elastically biased toward the first position relative to the first member.
- the syringe that has been collected and filled with whole blood is separated into, for example, a blood cell component and plasma by centrifugation with the plunger removed.
- a hub of the connection device is attached to a syringe port for collecting plasma from the syringe.
- the connecting device since the second member is elastically biased toward the first position, when the connecting device is attached to the syringe, the distal end side of the hollow needle is accommodated in the second internal space of the second member. Yes.
- the connecting device attached to the syringe is inserted from the distal end side of the second member into the syringe that has been centrifuged.
- the second member comes into contact with the gasket in the syringe and is further pushed in, the second member moves from the first position to the second position against the biasing force.
- the tip of the hollow needle is exposed from the second internal space of the second member, and the hollow needle penetrates the gasket.
- the tip of the hollow needle that penetrates the gasket is in contact with the plasma in the syringe. Therefore, when the plunger is operated in the syringe to which the connecting device is attached, plasma is collected through the hollow needle. After the plasma is collected, the hollow needle is withdrawn from the gasket.
- the second member moves away from the gasket, the second member moves from the second position to the first position by the biasing force. Thereby, the front end side of the hollow needle is accommodated again in the second internal space of the second member.
- the first member may be provided with a lock mechanism for fixing the second member so as not to move from the first position.
- the second member is fixed to the first position by the lock mechanism.
- the outer wall on the distal end side of the first member is provided with a tapered inclined surface extending outward toward the proximal end side, and the longitudinal direction of the second member toward the inclined surface is provided.
- a protruding piece that is elastically deformable so as to expand outward by contacting the inclined surface with the tip side is provided, and by the restoring force of the elastically deformed protruding piece,
- the second member may be elastically biased toward the first position. Accordingly, the second member can be elastically biased toward the first position with a simple configuration.
- An engagement portion is provided on the distal end side of the inclined surface of the first member so that the distal end side of the protruding piece can be engaged, and when the protruding piece engages with the engaging portion,
- the second member may be fixed to the first position.
- a long hole extending in the longitudinal direction is provided in the outer wall on the distal end side of the first member, and the second member can be projected and retracted in the first internal space of the first member on the distal end side.
- an elastic piece extending from the base end side is extended to the outside of the first member through the elongated hole, elastically deformed and connected to the distal end side of the first member, The second member may be elastically urged toward the first position by the restoring force of the elastic piece elastically deformed. Accordingly, the second member can be elastically biased toward the first position with a simple configuration.
- An engaging portion capable of engaging with the elastic piece is provided in the elongated hole of the first member, and the second member is engaged by the elastic piece engaging with the engaging portion. It may be fixed at the first position. Thereby, the lock mechanism is realized with a simple configuration.
- the outer wall on the proximal end side of the second member is provided with a tapered inclined surface that extends outward toward the distal end side, and the first member has the longitudinal direction toward the inclined surface.
- a protruding piece that is elastically deformable so as to expand outward by contacting the inclined surface with the tip side is provided, and by the restoring force of the elastically deformed protruding piece,
- the second member may be elastically biased with respect to the first member. Accordingly, the second member can be elastically biased toward the first position with a simple configuration.
- An engagement recess is provided on the outer wall of the first member, and an engagement projection that can be engaged with the engagement recess, and the engagement projection on the second member.
- An urging portion that elastically urges to a side that does not engage with, a lock portion that fixes the engagement convex portion in a position to engage the engagement concave portion against the urging force of the urging portion, May be provided, and the second member may be fixed to the first position by engaging the engaging concave portion with the engaging convex portion.
- the second member is provided with a grip portion that supports the engagement convex portion so as to face the engagement concave portion, and a pair of the biasing portions are provided on both sides of the grip portion.
- a grip portion that supports the engagement convex portion so as to face the engagement concave portion
- a pair of the biasing portions are provided on both sides of the grip portion.
- the lock portion protrudes from the engagement convex portion toward the pair of biasing portions, and By engaging both of the pair of urging portions, the engaging convex portion is fixed at a position where it engages with the engaging concave portion.
- the second member is provided with a grip portion that supports the engagement convex portion so as to face the engagement concave portion, and the urging portion is provided on both sides of the grip portion.
- a pair is provided and elastically supports the grip part in one of the pair of urging parts, and the lock part is provided from the engagement convex part to the other of the pair of urging parts.
- the present invention includes a connection device, a first syringe cylinder into which the distal end side of the connection device is inserted, a first gasket that is reciprocated in the first syringe cylinder, and a plunger that is attached to and detached from the first gasket.
- the hollow needle exposed from the second internal space when the member is in the second position can also be regarded as a blood component separation device that can penetrate the first gasket.
- the connecting device when the connecting device is inserted into the syringe and is not in contact with the gasket, the hollow needle is accommodated in the second member, so that the user touches or punctures the hollow needle by mistake. It is prevented.
- FIG. 1 is a perspective view of a blood component separation device 10.
- FIG. 2 is an exploded perspective view of the syringe 11.
- FIG. 3 is a longitudinal sectional view of the syringe 11 with the cap 16 attached.
- FIG. 4 is an exploded perspective view of the connection device 14.
- FIG. 5 is a longitudinal sectional view of the connection device 14.
- FIG. 6 is an exploded cross-sectional view of the connection device 14.
- FIG. 7 is an explanatory diagram for explaining the operation of the connection device 14.
- FIG. 8 is an explanatory diagram for explaining the operation of the connection device 14 when inserted into the syringe barrel 20.
- FIG. 9 is an explanatory diagram for explaining a procedure for using the blood component separation device 10.
- FIG. 10 is an exploded perspective view of the connection device 24 of the first modification.
- FIG. 11 is an exploded cross-sectional view of the connection device 24 of the first modification.
- FIG. 12 is a longitudinal sectional view of the connection device 24 of the first modification.
- FIG. 13 is an explanatory diagram for explaining the operation of the connection device 24 of the first modification.
- FIG. 14 is an explanatory diagram for explaining the operation of the connection device 24 of Modification 1 when inserted into the syringe barrel 20.
- FIG. 15 is an exploded perspective view of the connection device 34 according to the second modification.
- FIG. 16 is a longitudinal sectional view of the connection device 34 according to the second modification.
- FIG. 17 is an exploded cross-sectional view of the connection device 34 of the second modification.
- FIG. 15 is an exploded perspective view of the connection device 34 according to the second modification.
- FIG. 16 is a longitudinal sectional view of the connection device 34 according to the second modification.
- FIG. 17 is an exploded cross-sectional
- FIG. 18 is an explanatory diagram for explaining the operation of the connection device 34 according to the second modification.
- FIG. 19 is an explanatory diagram for explaining the operation of the lock mechanism 120 of the second modification.
- FIG. 20 is an explanatory diagram for explaining the operation when the first member 90 of Modification 2 is fixed to the second member 110.
- FIG. 21 is an explanatory diagram illustrating a procedure for using the connection device 34 according to the second modification.
- FIG. 22 is an exploded perspective view of the connection device 34A of the third modification.
- FIG. 23 is an explanatory diagram for explaining the operation of the connection device 34A of the third modification.
- FIG. 24 is an explanatory diagram for explaining the operation of the lock mechanism 130 of the third modification.
- FIG. 25 is an explanatory diagram illustrating an operation when the first member 90 of Modification 3 is fixed to the second member 110A.
- the blood component separation device 10 includes syringes 11, 12, and 13 and two connection devices 14.
- the syringe 11 is used for blood collection.
- the syringe 11 is used for weak centrifugation of blood (whole blood) obtained by blood collection.
- the syringe 12 and the one connection device 14 are used for suction of the centrifugal separation section 55 (FIG. 9B) separated by weak centrifugation.
- the syringe 12 is used for strong centrifugation of the suctioned centrifugal separation section 55.
- the syringe 13 and the other connection device 14 are used for suction of the supernatant 57 (FIG. 9D) separated by strong centrifugation.
- the syringes 11 and 12 correspond to the first syringe.
- the syringes 12 and 13 correspond to a second syringe. Since the syringes 11, 12, and 13 have the same configuration, the syringe 11 will be described below.
- the syringe 11 includes a syringe cylinder 20, a blood collection needle 15, a cap 16, a gasket 35, and a plunger 25.
- the syringe cylinder 20 has a cylindrical shape. One end of the syringe cylinder 20 in the longitudinal direction 105 (the direction along the central axis) is reduced in diameter to form a port 21 to which the blood collection needle 15 and the cap 16 are attached and detached. As shown in FIG. 3, the other end of the syringe cylinder 20 is opened without being reduced in diameter. A gasket 35 is inserted from the opening 22 of the syringe cylinder 20.
- the gasket 35 has a cylindrical portion 36 on the opening 22 side and a conical portion 37 on the port 21 side.
- the cylindrical portion 36 has a cylindrical shape having an outer diameter that is substantially the same as the inner diameter of the syringe cylinder 20 and is in close contact with the inner peripheral surface of the syringe cylinder 20 over the entire circumference.
- the gasket 35 seals the inner space of the syringe barrel 20 in a liquid-tight manner.
- the conical portion 37 is formed in a conical shape in accordance with the shape of the bottom surface 23 so that the conical portion 37 can be in close contact with the bottom surface 23 of the syringe cylinder 20.
- the conical portion 37 is in close contact with the bottom surface 23 of the syringe barrel 20 when the gasket 35 is pushed into the syringe barrel 20. Thereby, the mixing of air into the collected blood or the aspirated centrifugal separation section 55 and the supernatant 57 (FIG. 9) is suppressed.
- the gasket 35 has a screw hole 38 into which the screw portion 26 of the plunger 25 is screwed.
- the plunger 25 is a rod-like member, and has a screw portion 26 screwed into the screw hole 38 of the gasket 35 at one end portion in the axial direction.
- the plunger 25 is inserted into the syringe barrel 20 from the screw portion 26 side and attached to the gasket 35.
- the plunger 25 is attached to the syringes 11, 12, and 13 during blood collection and when the centrifugal separation section 55 and the supernatant 57 (FIG. 9) are sucked, and is removed from the syringes 11 and 12 during the centrifugal separation.
- the user operates the plunger 25 to reciprocate the gasket 35 along the longitudinal direction 105.
- the cap 16 has a large diameter portion 30, a small diameter portion 31 disposed inside the large diameter portion 30, and a plug portion 32 disposed inside the small diameter portion 31. ing.
- the inner peripheral surface of the small diameter portion 31 is in close contact with the outer peripheral surface of the port 21 over the entire periphery.
- the plug portion 32 enters the internal space of the port 21 and closes the internal space.
- the cap 16 is attached to the syringe cylinder 20 at the time of centrifugation.
- the material of the syringe cylinder 20, the gasket 35, the plunger 25, and the cap 16 may be glass or resin material.
- the syringe cylinder 20 and the plunger 25 are molded products of polypropylene
- the cap 16 is a molded product of polypropylene or elastomer
- a gasket is an elastomer molded product.
- connection device 14 As shown in FIG. 9, the connection device 14 is attached to the syringes 12 and 13 and used when the centrifugal separation section 55 and the supernatant 57 are aspirated. As shown in FIG. 4, the connection device 14 includes a first member 40, a second member 60, a hollow needle 17, and a hub 42 (FIG. 5).
- the first member 40 is a member that holds the hub 42 and the hollow needle 17.
- the second member 60 is a member that covers the tip 18 of the hollow needle 17.
- the first member 40 is a resin molded product such as polypropylene having a cylindrical base portion 41, a reinforcing rib 44, a first rod 45, a second rod 46, and a support portion 48.
- the direction parallel to the central axis of the base 41 is the axial direction 100
- one direction of the axial direction 100 is the first direction 101
- the other direction is the second direction 102
- the circumferential direction of the base 41 is the circumferential direction. This is described as 103.
- the axial direction 100 corresponds to the long direction.
- the second member 60 is shown in the direction opposite to the attachment direction to the first member 40 in the axial direction 100 so that the configuration of the second member 60 is clearly shown.
- the hub 42 is disposed in the internal space (corresponding to the first internal space) on the second direction 102 side of the base 41.
- the hub 42 is a member into which the port 21 (FIG. 2) of the syringe cylinder 20 is press-fitted into the internal space.
- the connecting device 14 is attached to and detached from the syringes 12 and 13 at the hub 42.
- the end of the base 41 on the first direction 101 side has a smaller diameter than the other parts, and a small-diameter portion 43 is configured. As shown in FIG. 7, the small diameter portion 43 advances and retreats into the internal space of the cylindrical portion 61 of the second member 60 in the relative movement of the first member 40 and the second member 60 in the axial direction 100, The second member 60 is guided in the axial direction 100.
- the first rod 45 has a disk shape and protrudes outward from the outer peripheral surface of the end portion of the base portion 41 on the second direction 102 side.
- the user places a finger on the first rod 45, presses the port 21 (FIG. 2) of the syringe barrel 20 into the hub 42 (FIG. 5), and attaches the connecting device 14 to the syringe barrel 20.
- the second rod 46 has a disk shape and projects outward from the outer peripheral surface of the base 41.
- the second flange 46 is provided on the second direction 102 side of the small diameter portion 43.
- the diameter D1 of the second rod 46 shown in FIG. 6 is slightly smaller than the inner diameter D2 (FIG. 3) of the syringe cylinder 20.
- the second rod 46 guides the connecting device 14 in the longitudinal direction 105 of the syringe barrel 20 when the connecting device 14 is inserted into the syringe barrel 20.
- the second rod 46 is provided with four insertion holes 47 into which the elastic part 63 of the second member 60 is inserted.
- the four insertion holes 47 are equally arranged with an interval of 90 degrees in the circumferential direction 103.
- abut the periphery of the 2nd member 60 in the circumferential direction 103 is made
- the reinforcing rib 44 protrudes outward from the outer peripheral surface of the base 41 and extends along the axial direction 100.
- Four reinforcing ribs 44 are provided on the base 41.
- the four reinforcing ribs 44 are arranged at intervals of 90 degrees in the circumferential direction 103.
- the four reinforcing ribs 44 are shifted by 45 degrees with respect to the insertion hole 47 in the circumferential direction 103 so as not to interfere with the elastic portion 63 inserted into the insertion hole 47.
- connection device 14 can be inserted into the syringe cylinder 20.
- the support portion 48 is provided on the second direction 102 side of the second rod 46.
- the support part 48 elastically deforms the elastic part 63 of the second member 60 in the relative movement of the first member 40 and the second member 60 in the axial direction 100.
- the support portion 48 has four inclined surfaces 49 having a tapered shape that expands outward toward the second direction 102.
- the inclined surface 49 is provided at a position between the two reinforcing ribs 44 in the circumferential direction 103.
- FIGS. 7A and 7B the claw 65 of the elastic portion 63 slides on the inclined surface 49, and the protruding piece 64 of the elastic portion 63 is elastically deformed.
- the abutment rib 50 protrudes outward in the radial direction of the base 41 from the end of the inclined surface 49 on the first direction 101 side.
- the contact rib 50 is provided over the entire circumference of the base 41 in the circumferential direction 103 (FIG. 4).
- the abutment rib 50 abuts on the claw 65 of the elastic portion 63 slid on the inclined surface 49 and stops the movement of the second member 60.
- a recess 51 that is recessed from the outer peripheral surface of the base 41 is provided on the first direction 101 side of the contact rib 50.
- the recessed part 51 is provided over the perimeter of the base 41 in the circumferential direction 103 (FIG. 4).
- FIGS. 7A and 7C when the second member 60 is pulled in the first direction 101 by the user, the claw 65 of the elastic portion 63 gets over the contact rib 50 and enters the recess 51. Fit.
- the second member 60 is fixed to the first member 40 by fitting the claw 65 into the recess 51.
- the second member 60 is fixed when a series of operations for obtaining the PRP (FIG. 9) is completed and the connecting device 14 is discarded.
- the concave portion 51 corresponds to an engaging portion and a lock mechanism.
- the surface of the contact rib 50 on the second direction 102 side is curved so that the claw 65 can get over the contact rib 50.
- the claw 65 may be provided with a curved surface.
- the first direction 101 side of the protruding tip of the contact rib 50 is an edge so that the claw 65 does not come off from the recess 51.
- the hollow needle 17 As shown in FIG. 5, the hollow needle 17 is disposed at a position overlapping the central axis of the base 41.
- the hollow needle 17 is connected to the hub 42 at the proximal end.
- the tip 18 of the hollow needle 17 protrudes from the small diameter portion 43 in the first direction 101.
- the protruding amount L3 (FIG. 7B) of the hollow needle 17 from the small diameter portion 43 is slightly larger than the thickness T (FIG. 3) of the gasket 35. Therefore, as shown in FIG. 8C, the hollow needle 17 can penetrate the gasket 35.
- the second member 60 includes a cylindrical portion 61, a flange 62, and four elastic portions 63.
- the second member 60 is a resin molded product molded from polypropylene or the like. Therefore, the elastic part 63 can be elastically deformed.
- the second member 60 is attached to the first member 40 by inserting the elastic portion 63 into the insertion hole 47 from the first direction 101 side. Due to the contact between the elastic part 63 and the wall surface of the insertion hole 47 in the circumferential direction 103, the second member 60 is prevented from rotating in the circumferential direction 103.
- the inner diameter D ⁇ b> 3 of the cylindrical portion 61 is slightly larger than the outer diameter D ⁇ b> 4 of the small diameter portion 43.
- the small diameter part 43 advances and retreats in the cylindrical part 61.
- the second member 60 is guided in the axial direction 100.
- the second member 60 is reciprocated relative to the first member 40 between the first position shown in FIG. 7A and the second position shown in FIG. 7B.
- the internal space of the cylindrical portion 61 corresponds to the second internal space.
- the outer diameter D5 of the cylindrical portion 61 is smaller than the diameter D6 (FIG. 3) of the screw hole 38 of the gasket 35.
- the cylindrical portion 61 enters the screw hole 38 of the gasket 35.
- the length L ⁇ b> 2 of the cylindrical portion 61 in the axial direction 100 is longer than the protrusion amount L ⁇ b> 3 (FIG. 7B) of the tip 18 of the hollow needle 17, and the small diameter portion 43 in the axial direction 100. It is almost the same as the length L1.
- the cylindrical portion 61 accommodates the tip 18 of the hollow needle 17 at the first position shown in FIG. 7A, and covers the small diameter portion 43 at the second position shown in FIG. 18 is exposed.
- the length L2 is substantially the same as the depth D7 (FIG. 3) of the screw hole 38 of the gasket 35. Therefore, as shown in FIG. 8A, when the cylindrical portion 61 comes into contact with the bottom surface of the screw hole 38, the flange 62 and the gasket 35 come into contact.
- the flange 62 has a disk shape, and protrudes from the end on the second direction 102 side of the outer peripheral surface of the cylindrical portion 61 toward the radially outer side of the cylindrical portion 61. As shown in FIG. 7B, the flange 62 comes into contact with the second flange 46 of the first member 40 when the second member 60 reaches the second position. As a result, the movement of the second member 60 beyond the second position is stopped.
- the elastic portion 63 has four projecting pieces 64 projecting from the flange 62 and a claw 65 provided at the projecting tip of each projecting piece 64.
- the projecting pieces 64 are arranged with an interval of 90 degrees in the circumferential direction 103.
- the protruding piece 64 is inserted into the insertion hole 47 of the second flange 46 of the first member 40.
- the claw 65 protrudes from the protruding tip portion of the protruding piece 64 toward the inclined surface 49 of the support portion 48, and is in contact with the inclined surface 49 at the first position.
- the second member 60 is moved from the first position shown in FIG. 7 (A) to the second position shown in FIG. 7 (B)
- the claw 65 slides on the inclined surface 49, and the projecting piece 64 moves. Elastically deformed.
- the elastically deformed protrusion 64 elastically biases the cylindrical portion 61 in the first direction 101 with respect to the first member 40.
- connection apparatus 14 With reference to FIG.7 and FIG.8, operation
- movement of the connection apparatus 14 when the connection apparatus 14 is attached to the syringe 12 and inserted in the syringe cylinder 20 of the syringe 11 is demonstrated.
- connection device 14 is attached to the syringe cylinder of the syringe 12 at the hub 42.
- the connection apparatus 14 may be attached to the syringes 12 and 13 beforehand at the time of manufacture.
- the distal end 18 of the hollow needle 17 is covered with the second member 60 before the connection device 14 is inserted into the syringe cylinder 20 of the first syringe 11.
- connection device 14 is inserted into the syringe barrel 20 of the syringe 11 from the second member 60 side by the user. Then, the cylindrical portion 61 enters the screw hole 38 of the gasket 35 of the syringe 11 and comes into contact with the bottom surface of the screw hole 38.
- the connecting device 14 is further pushed into the syringe cylinder 20
- the second member 60 is pushed by the gasket 35 and is moved relative to the first member 40 in the second direction 102.
- the tip 18 of the hollow needle 17 gradually comes out of the second member 60 and pierces the bottom surface of the screw hole 38.
- the second member 60 When the connection device 14 is pulled out from the syringe cylinder 20 of the syringe 11 by the user, the second member 60 is moved relative to the first member 40 in the first direction 101 by the elastic force of the protruding piece 64. , And returned to the first position shown in FIG. When the second member 60 is returned to the first position, the claw 65 of the elastic portion 63 comes into contact with the contact rib 50 of the first member 40 and the movement of the second member 60 is stopped. By returning the second member 60 to the first position, the tip 18 of the hollow needle 17 is accommodated in the cylindrical portion 61 of the second member 60.
- the second member 60 in the first position shown in FIG. 7A is pulled in the first direction 101 with respect to the first member 40 by the user.
- the user places a finger on the heel 62 and pulls the second member 60 in the first direction 101 with respect to the first member 40.
- the protruding piece 64 is elastically bent, and the claw 65 of the elastic portion 63 gets over the contact rib 50 of the first member 40.
- the claw 65 that has overcome the contact rib 50 is fitted into the recess 51 by the elastic force of the bent projecting piece 64.
- the second member 60 is fixed to the first member 40 in a state in which the tip 18 of the hollow needle 17 is accommodated. In this state, the connection device 14 is discarded.
- the operation of the blood component separation device 10 will be described with reference to FIGS. 2 and 9.
- the blood collection needle 15 (FIG. 2) is attached to the syringe cylinder 20 of the syringe 11, and the plunger 25 (FIG. 2) is attached to the gasket 35 to collect blood.
- the blood in the syringe cylinder 20 is whole blood, and includes red blood cells, white blood cells, platelets, plasma, and the like.
- the plunger 25 is removed from the gasket 35 of the syringe 11, and the syringe cylinder 20 of the syringe 11 is attached to the centrifuge (FIG. 9A).
- a weak centrifuge is performed by a centrifuge.
- the weak centrifugation is commonly used in blood centrifugation, and is generally defined as “centrifugation that separates whole blood into red blood cells and others (white blood cells, platelets, plasma)” (see Non-Patent Document 1).
- the centrifugation in the range where the centrifugation condition is about 500 to 2500 rpm is the weak centrifugation.
- the reason for the weak centrifugation is to suppress the concentration of platelets in the vicinity of the boundary between the separated centrifugal separation section 55 and the centrifugal separation section 56 and to increase the concentration of platelets in the obtained PRP.
- the centrifuge is general, detailed description is abbreviate
- the syringe cylinder 20 is disposed with the central axis line along the radial direction of rotation and the opening 22 side as the central side of rotation. Thereby, the blood (whole blood) in the syringe cylinder 20 is separated into the lower centrifugal section 56 containing red blood cells and the upper centrifugal section 55 containing white blood cells, platelets and plasma.
- connection device 14 attached to the syringe 12 is inserted into the syringe cylinder 20 of the syringe 11 (FIG. 9B).
- the centrifugal separation section 55 is sucked into the syringe 12 through the hollow needle 17 of the connection device 14.
- red blood cells are obtained in the syringe 11
- white blood cells, platelets and plasma are obtained in the syringe 12. Red blood cells are discarded or used for other purposes.
- the connection device 14 is removed from the syringe 12 and the cap 16 is attached to the syringe cylinder 20. Further, the plunger 25 is removed from the syringe 12 (FIG. 9C).
- the syringe cylinder 20 of the syringe 12 is attached to the centrifuge. Strong centrifugation is performed by the centrifugal separator. Strong centrifugation is commonly used in blood centrifugation, and is generally defined as “centrifugation that separates platelets, white blood cells and residual red blood cells from plasma” (see Non-Patent Document 1). In the present invention, centrifugation for concentrating platelets at the bottom of the syringe cylinder 20 is called strong centrifugation. Specifically, strong centrifugation is performed when the centrifugation conditions are in the range of about 3000 to 4000 rpm.
- the syringe cylinder 20 is disposed with the central axis line along the radial direction of rotation and the opening 22 side as the central side of rotation. Thereby, the centrifugal separation section 55 is separated into the lower PRP containing a large amount of platelets and the supernatant 57.
- connection device 14 attached to the syringe 13 is inserted into the syringe cylinder 20 of the syringe 12 (FIG. 9D).
- the supernatant 57 is sucked into the syringe 13 through the hollow needle 17 of the connection device 14. Thereby, PRP is obtained in the syringe 12.
- the concentration of platelets in PRP is not always clearly defined. For example, when the platelet count in 1 mL is the platelet concentration, the platelet concentration is 3 to 7 times the platelet concentration in the collected whole blood. Is PRP.
- the centrifugal separation is performed twice, that is, the weak centrifugation and the strong centrifugation is described, but the PRP can be obtained only by one centrifugation.
- strong centrifugation is performed in the syringe cylinder 20 of the syringe 11, and the whole blood is separated into a lower centrifugal separation section containing red blood cells, PRP, and supernatant. The supernatant is aspirated by the syringe 12.
- the plunger 25 is attached to the syringe cylinder 20 of the syringe 11, and the lower centrifugal separation section containing red blood cells is discharged from the syringe cylinder 20. Thereby, PRP is obtained in the syringe 11.
- the hollow needle 17 is provided in the connection device 14, it is not necessary to pass the hollow needle 17 through the connection device 14. Further, the distal end 18 of the hollow needle 17 is in the second member 60 until the connecting device 14 is inserted into the internal space of the syringe cylinder 20 and abuts on the gasket 35. After being pushed into the inner space, the syringe cylinder 20 is present. Therefore, it is possible to prevent the user from accidentally piercing the hollow needle 17 in a series of operations for obtaining the PRP.
- the movement of the second member 60 beyond the first position can be stopped by providing the contact rib 50.
- the second member 60 can be fixed to the first member 40 when the connecting device is discarded, and the possibility that the tip 18 of the hollow needle 17 is accidentally exposed in the discarded connecting device 14 is reduced. it can.
- connection device 24 includes a first member 70, a second member 80, a hollow needle 17, and a hub 42.
- the first member 70 is a member that holds the hollow needle 17 and is attached to and detached from the syringes 12 and 13.
- the second member 80 is a member that covers the tip 18 of the hollow needle 17.
- the first member 70 is a resin molded product such as polypropylene having a base 71, a reinforcing rib 44, a first collar 45, and a third collar 72.
- the base 71 has a cylindrical shape.
- the direction parallel to the central axis of the base 71 is the axial direction 100
- one direction of the axial direction 100 is the first direction 101
- the other is the second direction 102
- the circumferential direction of the base 71 is the circumferential direction. This is described as 103.
- the axial direction 100 corresponds to the long direction.
- the second member 80 is shown by rotating the mounting direction of the second member 80 with respect to the first member 70 by 90 degrees in the circumferential direction 103 so that the configuration of the second member 80 is clearly shown. Yes.
- a hub 42 is disposed in the internal space on the second direction 102 side of the base 71.
- the connecting device 24 is attached to and detached from the syringe 12 and the syringe 13 at the hub 42.
- a small diameter portion 43 is provided at the end of the base portion 71 on the first direction 101 side.
- the cylindrical portion 81 of the second member 80 is disposed in the internal space of the base 71 (corresponding to the first internal space).
- the first member 70 supports the second member 80 so as to be movable in the axial direction 100.
- the base 71 has two long holes 73 extending from the center of the base 71 in the axial direction 100 toward the first direction 101.
- the two long holes 73 are provided through the base 71 in the radial direction at positions facing each other in the radial direction.
- the elastic piece 82 of the second member 80 protrudes from the inner space of the base 71 toward the outside of the base 71 through the long hole 73.
- a pair of protrusions 75 and a pair of convex portions 76 protrude from a pair of wall surfaces 74 facing in the circumferential direction 103 (FIG. 10) among the wall surfaces of the long hole 73.
- the pair of protrusions 75 are provided at the end of the wall surface 74 on the first direction 101 side, and face each other in the circumferential direction 103.
- the protrusion 75 is provided on the second direction 102 side of the third rod 72 described later and spaced from the third rod 72.
- a claw 83 provided at the tip of the elastic piece 82 of the second member 80 is press-fitted between the third rod 72 and the protrusion 75. The claw 83 is hooked on the protrusion 75 and locked to the protrusion 75.
- the pair of convex portions 76 are provided at the substantially central portion of the wall surface 74 in the axial direction 100 and face each other in the circumferential direction 103.
- the distance L4 between the protruding tips of the pair of convex portions 76 is slightly shorter than the width W1 of the elastic piece 82. Specifically, the distance L4 is made shorter than the width W1 so that the elastic piece 82 can pass between the pair of convex portions 76 by the elastic deformation of the elastic piece 82 and the elastic deformation of the convex portion 76.
- the convex portion 76 contacts the elastic piece 82 and fixes the second member 80 when the connecting device 24 is discarded.
- the surfaces on the second direction 102 side of the pair of convex portions 76 are curved so that the elastic piece 82 can pass through.
- the first direction 101 side of the protruding tips of the pair of convex portions 76 is an edge so that the second member 80 does not return to the first position.
- a pair of convex part 76 is corresponded to an engaging part and a locking mechanism.
- the third rod 72 has the same configuration as the second rod 46 except that the insertion hole 47 is not provided.
- the two reinforcing ribs 44 extend in the axial direction 100 from the first rod 45 to the third rod 72.
- the reinforcing ribs 44 are arranged so as to be shifted by 90 degrees with respect to the long holes 73 in the circumferential direction 103 so as not to overlap with the long holes 73 of the base 71.
- the second member 80 includes a cylindrical portion 81 and a pair of elastic pieces 82 extending from the cylindrical portion 81.
- the second member 80 is a resin molded product molded from polypropylene or the like. Therefore, the elastic piece 82 of the second member 80 can be elastically deformed.
- the cylindrical portion 81 has a cylindrical shape whose outer diameter D11 is smaller than the inner diameter D8 of the base portion 71.
- the cylindrical portion 81 is inserted into the base portion 71 from the opening on the first direction 101 side of the base portion 71.
- the second member 80 is guided in the axial direction 100 in the cylindrical portion 81.
- the second member 80 reciprocates relative to the first member 70 in the axial direction 100 between the first position shown in FIG. 13A and the second position shown in FIG. Moved.
- the internal space of the cylindrical portion 81 corresponds to the second internal space.
- the elastic piece 82 extends from the end of the cylindrical portion 81 on the second direction 102 side.
- the elastic piece 82 is curved in a mountain shape, and protrudes from the internal space of the base 71 to the outside of the base 71 through the long hole 73.
- the tip of the elastic piece 82 is inserted between the third rod 72 and the protrusion 75.
- the elastic piece 82 has a claw 83 hooked on the protrusion 75 at its tip. The tip of the elastic piece 82 is locked to the first member 70 by the claw 83.
- the distance L5 between the apexes 84 of the pair of angled elastic pieces 82 in the radial direction of the base 71 is longer than the inner diameter D2 (FIG. 3) of the syringe barrel 20.
- the elastic piece 82 contacts the edge of the opening 22 of the syringe barrel 20.
- the outer diameter D ⁇ b> 9 of the hollow needle 17 is smaller than the inner diameter D ⁇ b> 10 of the cylindrical portion 81.
- the hollow needle 17 is disposed in the cylindrical portion 81 and the base portion 71, and is connected to the hub 42 (FIG. 11) at the proximal end.
- the tip of the hollow needle 17 protrudes from the small diameter portion 43 of the first member 70 in the first direction 101 by a protrusion amount L3 (FIG. 7). Thereby, the hollow needle 17 can penetrate the gasket 35 (FIG. 14B).
- the tip 18 of the hollow needle 17 is accommodated in the second member 80 when the second member 80 is in the first position shown in FIG. 13 (A), and the second member 80 is shown in FIG. 13 (B). Exposed when in 2 position.
- connection Device 24 With reference to FIG. 13 and FIG. 14, the operation when the connecting device 24 is attached to the syringe 12 and inserted into the syringe cylinder 20 of the syringe 11 will be described.
- the connecting device 24 is attached to the syringe cylinder 20 of the syringe 12 at the hub 42.
- the user holds the first member 90 and attaches the connecting device 34 to the syringe 12.
- the connection apparatus 24 may be attached to the syringe 12 at the time of manufacture.
- the second member 80 When the connecting device 24 is not inserted into the syringe cylinder 20 of the syringe 11, the second member 80 is in the first position shown in FIG. The second member 80 in the first position accommodates the tip 18 of the hollow needle 17.
- the elastic piece 82 is elastically deformed with the tip engaged with the first member 70 as a base point, and gradually changes from the mountain shape shown in FIG. 14 (A) to the linear shape shown in FIG. 14 (B). Elastically deformed into a chevron shape.
- the elastic piece 82 elastically deformed elastically urges the cylindrical portion 81 in the first direction 101 with respect to the first member 70.
- the cylindrical portion 81 is moved from the first position to the second position by being pushed in the second direction 102 by the gasket 35 and by elastic deformation of the elastic piece 82. Thereby, the tip 18 of the hollow needle 17 is exposed. As shown in FIG. 14B, the exposed tip 18 of the hollow needle 17 pierces the bottom surface of the screw hole 38 of the gasket 35 and penetrates the gasket 35.
- the elastic piece 82 in the second position where the hollow needle 17 penetrates the gasket 35, the elastic piece 82 is inside the inner peripheral surface of the syringe cylinder 20, and is not elastically deformed any further.
- the cylinder 81 In the second position, the cylinder 81 is inside the small diameter portion 43 and is not pushed by the gasket 35 any more. Therefore, the second member 80 is not moved beyond the second position.
- the second member 80 When the connecting device 24 is pulled out from the syringe cylinder 20, the second member 80 is moved from the second position shown in FIG. 13B to the first position shown in FIG. 13A by the elastic force of the elastic piece 82. The tip 18 of the hollow needle 17 is covered. When the second member 80 is moved to the first position, the elastic piece 82 contacts the pair of convex portions 76. Thereby, the movement of the second member 80 beyond the first position is stopped.
- connection device 24 When a series of operations for obtaining the PRP (FIG. 9) is completed, the second member 80 at the first position shown in FIG. 13 (A) is moved in the first direction 101 with respect to the first member 70 by the user. Is done. The user moves the second member 80 relative to the first member 70 by, for example, picking the cylindrical portion 81 and pulling it in the first direction 101 or pushing the elastic piece 82 in the first direction 101. When the second member 80 is moved, the elastic piece 82 passes between the pair of convex portions 76 due to elastic deformation of the elastic piece 82 and elastic deformation of the convex portion 76. When the elastic piece 82 passes between the pair of convex portions 76, the second member 80 is fixed to the first member 70 (FIG. 13C). In this state, the connection device 24 is discarded.
- the hollow needle 17 is provided in the connecting device 24, so there is no need to pass the hollow needle 17 through the connecting device 24. Further, the tip 18 of the hollow needle 17 is in the second member 80 when the connecting device 24 is not inserted into the internal space of the syringe cylinder 20, and when inserted into the syringe cylinder 20, the syringe cylinder 20. Therefore, it is possible to prevent the user from accidentally piercing the hollow needle 17 in a series of operations for obtaining the PRP.
- the elastic piece 82 is provided so as to contact the edge of the opening 22 of the syringe cylinder 20 when the tip of the cylindrical portion 81 contacts the bottom surface of the screw hole 38 of the gasket 35. It was done.
- the elastic piece 82 may be provided so that the elastic piece 82 contacts the edge of the opening 22 of the syringe cylinder 20 before the cylindrical portion 81 contacts the bottom surface of the screw hole 38.
- connection device 34 shown in FIG. 15 will be described.
- the same components as those of the connection device 14 and the connection device 24 are denoted by the same reference numerals.
- the connecting device 34 includes a first member 90, a second member 110, a hollow needle 17, and a hub 42.
- the first member 90 is a member that holds the hollow needle 17 and the hub 42.
- the second member 110 is a member that covers the tip 18 of the hollow needle 17.
- the first member 90 is a resin molded product such as polypropylene having a cylindrical part 92 having a cylindrical shape and an elastic part 93 extending from the cylindrical part 92. Therefore, the elastic part 93 can be elastically deformed.
- the direction parallel to the central axis of the cylindrical portion 92 is defined as the axial direction 100
- one direction of the axial direction 100 is defined as the first direction 101
- the other direction is defined as the second direction 102
- the circumferential direction of the cylindrical portion 92 is defined as the circumferential direction.
- the circumferential direction 103 will be described.
- the axial direction 100 corresponds to the long direction.
- the hub 42 is inserted into the internal space (corresponding to the first internal space) of the cylindrical portion 92 from the opening on the second direction 102 side of the cylindrical portion 92 and attached to the first member 90.
- the first member 90 is moved relative to the second member 110 in the axial direction 100 in the internal space (corresponding to the second internal space) of the base 111 of the second member 110, as will be described later.
- the cylindrical portion 92 has a pair of through holes 94.
- the pair of through holes 94 penetrates the cylindrical portion 92 at positions facing each other in the radial direction of the cylindrical portion 92.
- the through hole 94 is provided in the approximate center of the cylindrical portion 92 in the axial direction 100.
- the elastic part 93 includes a flange 95, a projecting piece 96, and a pair of bosses 97.
- the flange 95 protrudes in the radial direction from the end on the second direction 102 side of the outer peripheral surface of the cylindrical portion 92.
- the flange 95 abuts on the base 111 of the second member 110, and restrains the relative movement of the first member 90 and the second member 110 in the axial direction 100.
- the projecting piece 96 projects from the flange 95 in the first direction 101.
- the protruding piece 96 slides on the inclined surface 113 of the second member 110 and is elastically bent in the relative movement between the first member 90 and the second member 110.
- the bent projecting piece 96 elastically biases the second member 110 in the first direction 101 with respect to the first member 90.
- the pair of bosses 97 project in the circumferential direction 103 from both side surfaces in the circumferential direction 103 at the tip of the projecting piece 96. As shown in FIG. 18A, the boss 97 abuts against the elastic piece 121 of the second member 110, and restrains the relative movement of the first member 90 and the second member 110 in the axial direction 100. .
- the first member 90 is restrained from moving relative to the second member 110 by the contact between the boss 97 and the elastic piece 121 and the contact between the flange 95 and the base 111. Therefore, the movement range of the first member 90 with respect to the second member 110 in the axial direction 100 is within the range of the length L8 (FIG. 15) of the protruding piece 96 in the axial direction 100.
- the total length L8 of the projecting piece 96 is made longer than the thickness T (FIG. 3) of the gasket 35 so that the tip 18 of the hollow needle 17 can penetrate the gasket 35 (FIG. 3).
- the hollow needle 17 is connected to the hub 42 at the proximal end and protrudes from the first member 90 in the first direction 101.
- the second member 110 is a resin molded product such as polypropylene having a base 111, four reinforcing ribs 112, a third flange 72, and a lock mechanism 120.
- the base 111 has a cylindrical shape extending in the axial direction 100. As shown in FIG. 17, the inner diameter D ⁇ b> 12 of the base 111 is slightly larger than the outer diameter D ⁇ b> 13 of the cylindrical portion 92 of the first member 90. The cylindrical portion 92 is inserted into the base 111 from the opening on the second direction 102 side of the base 111. The base 111 is guided in the axial direction 100 by the cylindrical portion 92. The second member 110 reciprocates relative to the first member 90 in the axial direction 100 between the first position shown in FIG. 18A and the second position shown in FIG. Moved.
- a small diameter portion 43 is provided at an end portion of the base portion 111 on the first direction 101 side.
- the base 111 has a length matching the length of the hollow needle 17 in the axial direction 100 so that the small diameter portion 43 covers the tip 18 of the hollow needle 17 in the first position. .
- the reinforcing rib 112 protrudes in the radial direction from the outer peripheral surface of the base 111 and extends in the axial direction 100.
- the four reinforcing ribs 112 are arranged with an interval of 90 degrees in the circumferential direction 103.
- the protruding tip surface of the reinforcing rib 112 on the second direction 102 side constitutes an inclined surface 113 that approaches the outer peripheral surface of the base 111 as it goes in the second direction 102. As shown in FIG. 18, when the first member 90 and the second member 110 are relatively moved in the axial direction 100, the projecting piece 96 of the first member 90 slides on the inclined surface 113.
- the pair of lock mechanisms 120 are provided at the ends of the base 111 in the second direction 102 so as to face the radial direction of the base 111.
- the lock mechanism 120 includes an elastic piece 121, a grip portion 122 provided on the elastic piece 121, and an engagement convex portion 123 protruding from the grip portion 122.
- the elastic piece 121 has a substantially U shape that is elastically deformed, and has one end coupled to the base 111 and the other end coupled to the grip portion 122. Thereby, the elastic piece 121 elastically urges the grip portion 122 outward in the engaging direction of the base portion 111.
- the elastic piece 121 corresponds to the urging portion. More specifically, a pair of elastic pieces 121 are provided on both sides of the grip portion 122 in the circumferential direction of the second member 110. Further, the grip portion 122 is elastically supported by both of the pair of elastic pieces 121.
- the elastic piece 121 of one lock mechanism 120 and the elastic piece 121 of the other lock mechanism 120 are separated by a distance L6 (FIG. 19A) in the radial direction of the base 111.
- the distance L6 is longer than the width W2 (FIG. 15) of the projecting piece 96 of the first member 90.
- the projecting piece 96 extends to the inclined surface 113 through the pair of elastic pieces 121, and is in contact with the inclined surface 113 at the tip.
- the distance L6 is shorter than the distance L7 (FIG. 15) between the protruding tips of the pair of bosses 97 of the first member 90.
- FIG. 18A when the first member 90 and the second member 110 are relatively moved in the axial direction 100, the boss 97 contacts the elastic piece 121, and the first member 90 and the first member 90 The relative movement with the two members 110 is restrained.
- the grip portion 122 is provided between the pair of elastic pieces 121.
- the grip portion 122 has a plate shape along the outer peripheral surface of the base 111.
- the grip portion 122 supports the engaging convex portion 123 so as to face the through hole 94 of the first member 90.
- the pair of grip portions 122 of the pair of lock mechanisms 120 face each other in the radial direction of the base 111.
- the engaging convex part 123 protrudes from the holding part 122 toward the central part of the base 111.
- the base 111 is provided with a pair of notches 114 that are notched from the end surface on the second direction 102 side, and the front ends of the engaging projections 123 are located in the notches 114.
- the notch 114 is located between the ends of the pair of elastic pieces 121 constituting the lock mechanism 120 on the side coupled to the base 111. That is, the edge of the notch 114 indicates an end portion on the side coupled to the base 111 of the elastic piece 121.
- a pair of protrusions 124 having a triangular shape in plan view project from the both side surfaces of the engaging convex portion 123 in the circumferential direction 103 in the circumferential direction 103. More specifically, the protrusion 124 protrudes from the engagement convex portion 123 toward each of the pair of elastic pieces 121.
- the gripping part 122 is picked by the user and the gripping part 122 abuts on the outer peripheral surface of the base part 111 (FIG. 19B)
- the pair of protrusions 124 are hooked on the edges of the notches 114 of the base part 111 (that is, a pair of pairs). Are engaged with the respective elastic pieces 121) and locked to the base 111.
- the first member 90 is fixed to the second member 110.
- the protrusion 124 corresponds to the lock portion.
- connection apparatus 34 With reference to FIG.18 and FIG.21, operation
- connection apparatus 34 may be attached to the syringe 12 at the time of manufacture.
- the distal end 18 of the hollow needle 17 is covered with the second member 110 before the connection device 34 is inserted into the syringe barrel 20 of the syringe 11.
- the connecting device 34 attached to the syringe 12 is inserted into the syringe cylinder 20 of the syringe 11 from the small diameter portion 43 side. Then, the small diameter portion 43 comes into contact with the bottom surface of the screw hole 38 of the gasket 35 of the syringe 11.
- the second member 110 is relative to the first member 90 in the axial direction 100 as shown in FIG. Moved. Then, the tip 18 of the hollow needle 17 protrudes from the small diameter portion 43 and pierces the gasket 35.
- the second member 110 is in the second position and the hollow needle 17 penetrates the gasket 35 as shown in FIG.
- the projecting piece 96 slides on the inclined surface 113 and is elastically bent.
- the bent projecting piece 96 elastically biases the second member 110 in the second direction 102 with respect to the first member 90.
- the connecting device 34 When the connecting device 34 is pulled out from the syringe cylinder 20 of the syringe 11, the second member 110 is moved in the second direction 102 with respect to the first member 90 by the elastic force of the bent projecting piece 96, and is moved to the first position. Returned to Thereby, the tip 18 of the hollow needle 17 is covered with the small diameter portion 43.
- the pair of protrusions 124 and the ends of the pair of elastic pieces 121 coupled to the base 111 are engaged with each other.
- the first member 90 is fixed to the second member 110 in a state where the second member 110 accommodates the tip 18 of the hollow needle 17. In this state, the connection device 34 is discarded.
- connection device 34A shown in FIG. 22 will be described.
- the same components as those of the connection devices 14, 24, 34 are denoted by the same reference numerals.
- the connection device 34A according to Modification 3 is different from the connection device 34 according to Modification 2 in the configuration of the lock mechanism 130 described later, and other configurations are the same as those of the connection device 34 according to Modification 2. Therefore, the following description will be made with reference to a part of the drawings of the second modification.
- the connection device 34A includes a first member 90, a second member 110A, a hollow needle 17, and a hub 42.
- the first member 90 is a member that holds the hollow needle 17 and the hub 42.
- the second member 110 ⁇ / b> A is a member that covers the tip 18 of the hollow needle 17.
- a first member 90 shown in FIG. 22 includes a cylindrical portion 92 and an elastic portion 93 as in the second modification, and a hub 42 is attached to an opening on the second direction 102 side of the cylindrical portion 92.
- the first member 90 is moved relative to the second member 110A in the axial direction 100 in the internal space (corresponding to the second internal space) of the base 111 of the second member 110A.
- the engagement protrusion 133 of the second member 110A is inserted into the through hole 94 provided in the substantially center of the cylindrical portion 92 in the axial direction 100 when the connecting device 34A is discarded. Is inserted.
- the through hole 94 corresponds to the engaging recess.
- the 22 has a flange 95, a protruding piece 96, and a pair of bosses 97, as in the second modification. As shown in FIG. 23B, the flange 95 abuts on the base 111 of the second member 110A and restrains the relative movement in the axial direction 100 between the first member 90 and the second member 110A.
- the protrusion 96 slides on the inclined surface 113 of the second member 110A in the relative movement between the first member 90 and the second member 110A. It moves and is elastically bent.
- the bent projecting piece 96 elastically biases the second member 110 ⁇ / b> A in the first direction 101 with respect to the first member 90.
- the boss 97 abuts against the elastic piece 131 of the second member 110A, and restrains the relative movement in the axial direction 100 between the first member 90 and the second member 110A. .
- the first member 90 is restrained from moving relative to the second member 110A by the contact between the boss 97 and the elastic piece 131 and the contact between the flange 95 and the base 111. Therefore, the movement range of the first member 90 with respect to the second member 110 ⁇ / b> A in the axial direction 100 is within the range of the length L ⁇ b> 8 (FIG. 22) of the protrusion 96 in the axial direction 100.
- the total length L8 of the projecting piece 96 is made longer than the thickness T (FIG. 3) of the gasket 35 so that the tip 18 of the hollow needle 17 can penetrate the gasket 35 (FIG. 3).
- the second member 110 ⁇ / b> A is a resin molded product such as polypropylene having a base 111, four reinforcing ribs 112, a third flange 72, and a lock mechanism 130.
- the configurations of the base 111, the four reinforcing ribs 112, and the third rod 72 are the same as in the second modification.
- the pair of lock mechanisms 130 is provided at the end of the base 111 in the second direction 102 so as to face the radial direction of the base 111.
- the lock mechanism 130 includes an elastic piece 131, a grip part 132 provided on the elastic piece 131, and an engagement convex part 133 protruding from the grip part 132.
- a pair of elastic pieces 131 are provided on both sides of the grip portion 132 in the circumferential direction 103 of the second member 110A.
- One of the pair of elastic pieces 131 has a substantially U shape that is elastically deformed, and one end thereof is coupled to the base 111 and the other end is coupled to the grip portion 132. That is, the elastic piece 131 elastically urges the grip portion 132 outward in the engaging direction of the base portion 111.
- the elastic piece 131 corresponds to the urging portion.
- the other of the pair of elastic pieces 131 is coupled only to the base portion 111 and is separated from the grip portion 132. That is, the grip portion 132 is elastically supported by only one of the pair of elastic pieces 131.
- the elastic piece 131 of one lock mechanism 130 and the elastic piece 131 of the other lock mechanism 130 are separated by a distance L6 (FIG. 24A) in the radial direction of the base 111.
- the distance L6 is longer than the width W2 (FIG. 15) of the projecting piece 96 of the first member 90.
- the projecting piece 96 extends to the inclined surface 113 through a pair of elastic pieces 131, and abuts the inclined surface 113 at the tip.
- the distance L6 is shorter than the distance L7 (FIG. 15) between the protruding tips of the pair of bosses 97 of the first member 90.
- FIG. 23A when the first member 90 and the second member 110A are relatively moved in the axial direction 100, the boss 97 abuts against the elastic piece 131, and the first member 90 and the first member 90A The relative movement with the two members 110A is restrained.
- the grip portion 132 is provided between the pair of elastic pieces 131.
- the gripping part 132 has a plate shape along the outer peripheral surface of the base part 111.
- the grip portion 132 supports the engagement convex portion 133 so as to face the through hole 94 of the first member 90 in a state where the second member 110 ⁇ / b> A is attached to the first member 90.
- the pair of grip portions 132 of the pair of lock mechanisms 130 are opposed to each other in the radial direction of the base 111.
- the engaging convex portion 133 protrudes from the grip portion 132 toward the center portion of the base portion 111.
- the base 111 is provided with a pair of notches 114 that are notched from the end surface on the second direction 102 side, and the tips of the engaging projections 133 are located in the notches 114.
- the edge of the notch 114 in Modification 3 refers to the end of the other of the pair of elastic pieces 131 (that is, the elastic piece 131 on the side that does not support the grip portion 132).
- a projection 134 having a triangular shape in plan view protrudes from the side surface on one side of the engaging convex portion 133 in the circumferential direction 103 in the circumferential direction 103. More specifically, the protrusion 134 protrudes from the engaging convex portion 133 toward the other of the pair of elastic pieces 131 (that is, the elastic piece 131 on the side that does not support the grip portion 132).
- the gripping part 132 is picked by the user and the gripping part 132 comes into contact with the outer peripheral surface of the base part 111 (FIG. 24B)
- the protrusion 134 is hooked on the edge of the notch 114 of the base part 111 (that is, on the other side). Engaging with the elastic piece 131) and locked to the base 111.
- the first member 90 is fixed to the second member 110A.
- the protrusion 134 corresponds to the lock portion.
- the operation when the connecting device 34A is discarded will be described.
- the pair of grip portions 132 are picked by the user.
- the lock mechanism 130 is moved from the position shown in FIGS. 25A and 25C to the position shown in FIGS. 25B and 25D by the elastic deformation of the elastic piece 131.
- the engaging projection 133 of the lock mechanism 130 is fitted into the through hole 94 of the first member 90, and the protrusion 134 is hooked on the edge of the notch 114 (FIG. 24B). More specifically, the protrusion 134 and the elastic piece 131 on the other side are engaged.
- the first member 90 is fixed to the second member 110A in a state where the second member 110A accommodates the tip 18 of the hollow needle 17. In this state, the connection device 34A is discarded.
- the first member 90 can be fixed to the second member 110A by the lock mechanism 130 when the connecting device 34A is discarded. Therefore, in the discarded connecting device 34A, the tip 18 of the hollow needle 17 is erroneously inserted. The risk of exposure is reduced.
- the example in which the hub 42 is attached to the first members 40, 70, 90 has been described.
- a connection part that is attached to and detached from the port 21 of the syringe cylinder 20 may be directly formed on the first members 40, 70, and 90 by molding.
- a hub having a screw hole into which the port 21 is screwed may be used instead of the hub 42 into which the port 21 is press-fitted.
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Abstract
Description
図1に示されるように、血液成分分離装置10は、シリンジ11、12、13と、2個の接続装置14と、を備えている。シリンジ11は、採血に用いられる。また、シリンジ11は、採血により得られた血液(全血)の弱遠心に用いられる。シリンジ12及び一方の接続装置14は、弱遠心により分離された遠心分離区分55(図9(B))の吸引に用いられる。また、シリンジ12は、吸引した遠心分離区分55の強遠心に用いられる。シリンジ13及び他方の接続装置14は、強遠心により分離された上澄み57(図9(D))の吸引に用いられる。シリンジ11、12が第1シリンジに相当する。シリンジ12、13が第2シリンジに相当する。シリンジ11、12、13は同じ構成であるので、以下では、シリンジ11について説明がされる。
図9に示されるように、接続装置14は、遠心分離区分55及び上澄み57を吸引する際に、シリンジ12、13に取り付けられて使用される。図4に示されるように、接続装置14は、第1部材40と、第2部材60と、中空針17と、ハブ42(図5)と、を備えている。第1部材40は、ハブ42及び中空針17を保持する部材である。第2部材60は、中空針17の先端18を覆う部材である。
第1部材40は、円筒形状の基部41と、補強リブ44と、第1鍔45と、第2鍔46と、支持部48と、を有するポリプロピレンなどの樹脂成型品である。以下では、基部41の中心軸線に平行な方向を軸方向100とし、軸方向100の一方の向きを第1向き101とし、他方の向きを第2向き102とし、基部41の周方向を周方向103として説明がされる。軸方向100が長尺方向に相当する。なお、図4では、第2部材60の構成が明瞭に示されるように、第2部材60は、第1部材40への取り付け向きとは軸方向100において反対向きにされて示されている。
図5に示されるように、中空針17は、基部41の中心軸線に重なる位置に配置されている。中空針17は、基端においてハブ42と連結されている。
図4に示されるように、第2部材60は、円筒部61と、鍔62と、4つの弾性部63と、を備えている。第2部材60は、ポリプロピレンなどにより成型された樹脂成型品である。よって、弾性部63は弾性変形可能である。第2部材60は、第1向き101側から弾性部63を差込孔47に差し込むことにより、第1部材40に取り付けられている。周方向103における弾性部63と差込孔47の壁面との当接により、第2部材60の周方向103への周り止めがされている。
図7及び図8を参照して、接続装置14がシリンジ12に取り付けられてシリンジ11のシリンジ筒20内に挿入されるときの接続装置14の動作について説明がされる。
図2、及び図9を参照して、血液成分分離装置10の動作について説明がされる。まず、シリンジ11のシリンジ筒20に採血針15(図2)が取り付けられ、ガスケット35にプランジャ25(図2)が取り付けられ、採血が行われる。シリンジ筒20内の血液は、全血であり、赤血球、白血球、血小板、血漿などを含む。
本実施形態では、接続装置14に中空針17が設けられているので、接続装置14に中空針17を通す必要がない。また、中空針17の先端18は、接続装置14がシリンジ筒20の内部空間に挿入され、ガスケット35と当接するまでは、第2部材60内にあり、ガスケット35と当接し、更にシリンジ筒20の内部空間に押しこまれた後は、シリンジ筒20内にある。よって、PRPを得るための一連の作業において、使用者が中空針17を誤って刺すことを防止できる。
本変形例では、接続装置24が説明される。以下の説明において、接続装置14と同構成のものには、同一の符号が付されている。図10に示されるように、接続装置24は、第1部材70と、第2部材80と、中空針17と、ハブ42と、を備えている。第1部材70は、中空針17を保持し、かつシリンジ12、13に着脱される部材である。第2部材80は、中空針17の先端18を覆う部材である。
第1部材70は、基部71と、補強リブ44と、第1鍔45と、第3鍔72と、を有するポリプロピレンなどの樹脂成型品である。
第2部材80は、円筒部81と、円筒部81から延びる一対の弾性片82と、を備えている。第2部材80は、ポリプロピレンなどにより成型された樹脂成型品である。よって、第2部材80の弾性片82は弾性変形可能である。
図11に示されるように、中空針17の外径D9は、円筒部81の内径D10より小さくされている。図12に示されるように、中空針17は、円筒部81内及び基部71内に配置され、基端においてハブ42(図11)と連結されている。中空針17の先端は、第1部材70の小径部43から第1向き101へ、突出量L3(図7)だけ突出されている。これにより、中空針17は、ガスケット35を穿通可能である(図14(B))。中空針17の先端18は、第2部材80が図13(A)に示される第1位置にあるとき、第2部材80に収容され、第2部材80が図13(B)に示される第2位置にあるとき、露出される。
図13、及び図14を参照して、接続装置24がシリンジ12に取り付けられてシリンジ11のシリンジ筒20内に挿入されるときの動作について説明がされる。
本変形例では、接続装置24に中空針17が設けられているので、接続装置24に中空針17を通す必要がない。また、中空針17の先端18は、接続装置24がシリンジ筒20の内部空間に挿入されていないときは、第2部材80内にあり、シリンジ筒20内に挿入されているときは、シリンジ筒20内にある。よって、PRPを得るための一連の作業において、使用者が中空針17を誤って刺すことを防止できる。
本変形例では、図15に示される接続装置34が説明される。以下の説明において、接続装置14や接続装置24と同構成のものには、同一の符号が付されている。
第1部材90は、円筒形状の円筒部92と、円筒部92から延出された弾性部93と、を有するポリプロピレンなどの樹脂成型品である。よって、弾性部93は弾性変形可能である。以下では、円筒部92の中心軸線に平行な方向を軸方向100とし、軸方向100の一方の向きを第1向き101とし、他方の向きを第2向き102とし、円筒部92の周方向を周方向103として説明がされる。軸方向100が長尺方向に相当する。
図16に示されるように、中空針17は、基端においてハブ42と連結されており、第1部材90から第1向き101へ突出されている。
図15に示されるように、第2部材110は、基部111と、4つの補強リブ112と、第3鍔72と、ロック機構120と、を有するポリプロピレンなどの樹脂成型品である。
図18及び図21を参照して、接続装置34がシリンジ12に取り付けられてシリンジ11のシリンジ筒20内に挿入されるときの動作について説明がされる。
本変形例では、接続装置34に中空針17が設けられているので、中空針17を接続装置34に通す必要がない。また、中空針17の先端18は、接続装置34がシリンジ筒20の内部空間に挿入され、ガスケット35と当接するまでは、第2部材60内にあり、ガスケット35と当接し、更にシリンジ筒20の内部空間に押しこまれた後は、シリンジ筒20内にある。よって、PRPを得るための一連の作業において、使用者が中空針17を誤って刺すことを防止できる。
本変形例では、図22に示される接続装置34Aが説明される。以下の説明において、接続装置14、24、34と同構成のものには、同一の符号が付されている。より詳細には、変形例3に係る接続装置34Aは、後述するロック機構130の構成が変形例2に係る接続装置34と異なり、それ以外の構成は変形例2に係る接続装置34と共通するので、以下、変形例2の図面の一部を参照して説明される。
図22に示される第1部材90は、変形例2と同様に、円筒部92と弾性部93とで構成され、円筒部92の第2向き102側の開口にハブ42が取り付けられている。この第1部材90は、後述されるように、第2部材110Aの基部111の内部空間(第2内部空間に相当する)を軸方向100へ第2部材110Aに対して相対的に移動される。また、変形例2と同様に、軸方向100における円筒部92のほぼ中央に設けられている貫通孔94には、接続装置34Aが破棄される際に、第2部材110Aの係合凸部133が嵌め込まれる。これにより、第1部材90は、第2部材110Aに固定される。貫通孔94が、係合凹部に相当する。
図22に示されるように、第2部材110Aは、基部111と、4つの補強リブ112と、第3鍔72と、ロック機構130と、を有するポリプロピレンなどの樹脂成型品である。なお、基部111、4つの補強リブ112、及び第3鍔72の構成は変形例2と共通する。
本変形例では、接続装置34Aに中空針17が設けられているので、中空針17を接続装置34Aに通す必要がない。また、中空針17の先端18は、接続装置34Aがシリンジ筒20の内部空間に挿入され、ガスケット35と当接するまでは、第2部材60内にあり、ガスケット35と当接し、更にシリンジ筒20の内部空間に押しこまれた後は、シリンジ筒20内にある。よって、PRPを得るための一連の作業において、使用者が中空針17を誤って刺すことを防止できる。
上述の実施形態及び変形例では、円筒部61と弾性部63、円筒部81と弾性片82、及び円筒部92と弾性部93とが樹脂材料により一体に成型された例が説明された。しかしながら、弾性部63や弾性片82や弾性部93の代わりに、板バネが設けられてもよい。この板バネは、弾性部63や弾性片82や弾性部93と同様の形状にされ、円筒部61や円筒部81や円筒部92に固着される。
11、12、13・・・シリンジ
14、24、34、34A・・・接続装置
16・・・キャップ
17・・・中空針
20・・・シリンジ筒
21・・・ポート
25・・・プランジャ
35・・・ガスケット
40、70、90・・・第1部材
42・・・ハブ
49、113・・・傾斜面
51・・・凹部(係合部)
60、80、110、110A・・・第2部材
64、96・・・突片
73・・・長孔
76・・・凸部(係合部)
82・・・弾性片
94・・・貫通孔(係合凹部)
120、130・・・ロック機構
121、131・・・弾性片(付勢部)
122、132・・・把持部
123、133・・・係合突部
124、134・・・突起(ロック部)
PRP・・・多血小板血漿
Claims (11)
- 長尺方向へ延びて両端側へ開口する第1内部空間を有する筒形状の第1部材と、
シリンジのポートに接続可能なハブが上記第1部材の基端側に設けられており、当該ハブから上記第1部材の第1内部空間を先端側へ延びる中空針と、
長尺方向へ延びて両端側へ開口する第2内部空間を有しており、当該第2内部空間を上記第1内部空間と連続させて上記第1部材の先端側に設けられており、上記第1部材に対して長尺方向へ相対移動可能な第2部材と、を具備しており、
上記第2部材は、上記第2内部空間内に上記中空針の先端を収容する第1位置と、上記第2内部空間から上記中空針の先端を露出する第2位置とに移動可能であって、上記第1部材に対して相対的に第1位置側へ弾性的に付勢されたものである接続装置。 - 上記第1部材に、上記第2部材を上記第1位置から移動しないように固定するロック機構が設けられたものである請求項1に記載の接続装置。
- 上記第1部材の先端側の外壁に、基端側へ向かって外側へ拡がるテーパ形状の傾斜面が設けられており、
上記第2部材に、上記傾斜面へ向かって上記長尺方向へ延出されており、先端側が上記傾斜面と当接することによって、外側へ拡がるように弾性的に変形可能な突片が設けられており、
弾性的に変形した上記突片の復元力により、上記第2部材が上記第1位置側へ弾性的に付勢されている請求項1に記載の接続装置。 - 上記第1部材の上記傾斜面の先端側に、上記突片の先端側が係合可能な係合部が設けられており、上記突片が上記係合部と係合することにより、上記第2部材が上記第1位置に固定される請求項3に記載の接続装置。
- 上記第1部材の先端側の外壁に、上記長尺方向へ延びる長孔が設けられており、
上記第2部材は、先端側が上記第1部材の上記第1内部空間に出没可能に設けられており、基端側から延出された弾性片が上記長孔を通じて上記第1部材の外側へ延出され、弾性的に変形されて上記第1部材の先端側に接続されており、
弾性的に変形した上記弾性片の復元力により、上記第2部材が上記第1位置側へ弾性的に付勢されている請求項1に記載の接続装置。 - 上記第1部材の上記長孔に、上記弾性片が係合可能な係合部が設けられており、上記弾性片が上記係合部と係合することにより、上記第2部材が上記第1位置に固定される請求項5に記載の接続装置。
- 上記第2部材の基端側の外壁に、先端側へ向かって外側へ拡がるテーパ形状の傾斜面が設けられており、
上記第1部材に、上記傾斜面へ向かって上記長尺方向へ延出されており、先端側が上記傾斜面と当接することによって、外側へ拡がるように弾性的に変形可能な突片が設けられており、
弾性的に変形した上記突片の復元力により、上記第2部材が上記第1部材に対して弾性的に付勢されている請求項1に記載の接続装置。 - 上記第1部材の外壁に係合凹部が設けられており、
上記第2部材に、上記係合凹部と係合可能な係合凸部と、当該係合凸部を上記係合凹部と係合しない側へ弾性的に付勢する付勢部と、当該付勢部による付勢力に抗して上記係合凸部を上記係合凹部と係合する位置に固定するロック部と、が設けられており、
上記係合凹部が上記係合凸部と係合することにより、上記第2部材が上記第1位置に固定される請求項7に記載の接続装置。 - 上記第2部材に、上記係合凹部に対向させて上記係合凸部を支持する把持部が設けられており、
上記付勢部は、上記把持部の両側に一対が設けられて、当該一対の付勢部の両方で上記把持部を弾性的に支持するものであり、
上記ロック部は、上記係合凸部から上記一対の付勢部それぞれに向けて突出し、当該一対の付勢部の両方に係合することにより、上記係合凸部を上記係合凹部と係合する位置に固定する請求項8に記載の接続装置。 - 上記第2部材に、上記係合凹部に対向させて上記係合凸部を支持する把持部が設けられており、
上記付勢部は、上記把持部の両側に一対が設けられて、当該一対の付勢部のうちの一方で上記把持部を弾性的に支持するものであり、
上記ロック部は、上記係合凸部から上記一対の付勢部の他方に向けて突出し、当該他方の付勢部に係合することにより、上記係合凸部を上記係合凹部と係合する位置に固定する請求項8に記載の接続装置。 - 請求項1から10のいずれかに記載の接続装置と、
上記接続装置の先端側が挿入される第1シリンジ筒、当該第1シリンジ筒内を往復動される第1ガスケット、当該第1ガスケットに着脱されるプランジャを有する第1シリンジと、
上記第1シリンジ筒の第1ポートを封止するキャップと、
上記接続装置が装着される第2ポートを有する第2シリンジと、を備えており、
上記接続装置の第2部材が第2位置となることにより上記第2内部空間から露出される上記中空針が、上記第1ガスケットを貫通可能である血液成分分離装置。
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Cited By (3)
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EP2898909A1 (en) * | 2014-01-27 | 2015-07-29 | Arthrex, Inc. | Triple syringe and methods of making platelet-enriched plasma and use thereof |
US11904144B2 (en) | 2019-10-04 | 2024-02-20 | Arthrex, Inc. | Devices and methods for making therapeutic fluids |
WO2024043028A1 (ja) * | 2022-08-25 | 2024-02-29 | 京セラ株式会社 | シリンジシステム及びシリンジシステムの使用方法 |
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WO2017011641A1 (en) | 2015-07-14 | 2017-01-19 | Neomed, Inc. | Dosing control coupling for enteral fluid transfer |
US10682287B2 (en) | 2015-07-14 | 2020-06-16 | Neomed, Inc. | Dosing control coupling for enteral fluid transfer and enteral couplings and syringes |
JP1594716S (ja) * | 2017-03-07 | 2018-01-15 | ||
USD937421S1 (en) * | 2020-04-02 | 2021-11-30 | Wise S.R.L. | Foldable medical electrode |
TWI780828B (zh) * | 2020-07-23 | 2022-10-11 | 仁寶電腦工業股份有限公司 | 穿刺裝置及採血裝置 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2898909A1 (en) * | 2014-01-27 | 2015-07-29 | Arthrex, Inc. | Triple syringe and methods of making platelet-enriched plasma and use thereof |
EP3175874A1 (en) * | 2014-01-27 | 2017-06-07 | Arthrex, Inc | Triple syringe and methods of making platelet-enriched plasma and use thereof |
US11806462B2 (en) | 2014-01-27 | 2023-11-07 | Arthrex, Inc. | Triple syringe and methods of making platelet-enriched plasma and use thereof |
US11904144B2 (en) | 2019-10-04 | 2024-02-20 | Arthrex, Inc. | Devices and methods for making therapeutic fluids |
WO2024043028A1 (ja) * | 2022-08-25 | 2024-02-29 | 京セラ株式会社 | シリンジシステム及びシリンジシステムの使用方法 |
Also Published As
Publication number | Publication date |
---|---|
EP2829288B1 (en) | 2018-08-15 |
US20150073356A1 (en) | 2015-03-12 |
JPWO2013140858A1 (ja) | 2015-08-03 |
US9968769B2 (en) | 2018-05-15 |
EP2829288A1 (en) | 2015-01-28 |
JP6123792B2 (ja) | 2017-05-10 |
SG11201405981UA (en) | 2014-10-30 |
EP2829288A4 (en) | 2015-12-09 |
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