JP4867775B2 - Syringe holder and syringe device - Google Patents

Description

  The present invention relates to a syringe holder in which a syringe body of a syringe (syringe) is inserted. The present invention also relates to a syringe device comprising a syringe and a syringe holder.

  The material of the syringe is determined according to the type of chemical solution to be used. Resin and glass are generally used as the material for the cylindrical syringe body filled with the chemical solution, but it is necessary to use glass depending on the type of the chemical solution to be used. In addition, in a prefilled syringe that has been frequently used in recent years and is pre-filled with a predetermined amount of a chemical solution, the syringe body is required to be made of glass in order to prevent the chemical solution from being altered during storage.

  In order to discharge the drug solution filled in the syringe from the nozzle at the tip, it is necessary to push the plunger into the syringe body. In this pushing operation, the index finger and the middle finger are put on the finger-hanging flange formed on the syringe body, and the rear end of the plunger is pushed with the thumb. Therefore, in order to perform this pushing operation stably, the finger-hanging flange needs to have a certain size or more.

  However, when glass is used as the material for the syringe body, if the finger-hanging flange is made large, the glass is brittle, so that the finger-hanging flange is broken and missing, and molding is difficult. Accordingly, it is difficult to provide a large finger-hanging flange on the glass syringe body, and as a result, the glass syringe body has a problem that the push-in operability of the plunger is poor.

  A proposal for solving this problem is described in Patent Document 1, which will be described with reference to FIG.

  The syringe 910 includes a cylindrical syringe main body 911, a gasket 912 slidably inserted into the syringe main body 911, and a plunger 913 whose tip is screwed to the gasket 912. A cap 914 is attached to the nozzle 911a at one end of the syringe main body 911, and a large diameter portion 911b having a relatively large outer diameter is formed on the outer peripheral surface of the other end of the syringe main body 911. The syringe 910 is a prefilled syringe in which a syringe body 911 is filled with a chemical solution in advance.

  The syringe body 911 of the syringe 910 is inserted into a cylindrical syringe holder 920 having substantially the same length as the syringe body 911. On the outer peripheral surface of the rear end of the syringe holder 920, a finger hooking flange 921 protruding outward is formed. A fixing member 925 is locked to the finger hooking flange 921, and the finger hooking flange 921 and the fixing member 925 sandwich the large diameter portion 911 b of the syringe main body 911 so that the length of the syringe main body 911 relative to the syringe holder 920 is increased. The relative movement of the direction is restricted. At the tip of the syringe holder 920, there is provided a fastening portion 922 having a spiral protrusion (female screw, not shown) formed on the inner peripheral surface.

  When using this syringe device, the cap 914 is removed, and a syringe needle (not shown) is attached to the nozzle 911a at the tip of the syringe body 911 instead. At this time, the spiral protrusion (male screw) formed on the outer periphery of the needle base of the injection needle is screwed with the spiral protrusion on the inner peripheral surface of the fastening portion 922 of the syringe holder 920 (in this way, using the screw). Then, connecting the injection needle or the like firmly to the nozzle 911a is referred to as “luer lock connection”). Thereafter, the index finger and the middle finger are put on the finger-hanging flange 921 formed on the syringe holder 920, and the rear end of the plunger 913 is pushed with the thumb, so that the medicine filled in the syringe main body 911 is injected into the injection needle attached to the nozzle 911a. It can be made to discharge from the tip.

  Since the syringe holder 920 is made of resin, a sufficiently large finger hook flange 921 can be formed. Therefore, the pushing operation of the plunger 913 can be performed stably.

In addition, since the needle base of the injection needle is screwed with the fastening portion 922 of the syringe holder 920, the injection needle can be connected to the nozzle even if high pressure is generated in the syringe main body 911 when discharging a highly viscous drug solution. It will not fall out of 911a.
Japanese Patent Laid-Open No. 10-155905

  When blood transfusion or infusion is performed on a patient, a co-infusion port is often provided in the main liquid supply path in order to co-inject the chemical liquid or the like into the main liquid supply path through which blood or chemical liquid flows. As this mixed injection port, there is known a needleless port that is provided with a rubber valve body in which a slit is formed and in which a nozzle of a syringe is directly inserted into the slit of the valve body (in this way, Connecting the nozzle and the port by inserting the nozzle of the syringe into the slit of the valve body is called “slip connection”).

  However, since the fixing portion 922 of the syringe holder 920 shown in FIG. 6 surrounds the periphery of the nozzle 911a of the syringe 910, the nozzle 911a of the syringe 910 is inserted into the slit of the needleless port with the syringe holder 920 mounted. Cannot be plugged into. That is, the syringe holder 920 of FIG. 6 is designed on the assumption that a luer lock connection is made, and cannot perform a slip connection.

  If the syringe 910 is removed from the syringe holder 920, it is possible to insert the nozzle 911a of the syringe 910 into the needleless port, but the large diameter portion 911b of the syringe 910 is too small as a finger-hanging flange. Sex is extremely bad.

  It is an object of the present invention to provide a syringe holder and a syringe device that can perform both luer lock connection and slip connection while ensuring a good pushing operability of the plunger by providing a sufficiently large finger-hanging flange. Objective.

  The syringe holder of the present invention is a syringe holder having a nozzle for discharging a chemical solution at one end and a syringe main body having a large diameter portion at the other end, which is connected to the nozzle on the inner peripheral surface of one end. At least a cylindrical holder body formed with a finger hook flange projecting outwardly on the outer peripheral surface at the other end or in the vicinity thereof. A notch that allows the holder body to be divided in the longitudinal direction is formed in a region between the spiral protrusion and the finger-hanging flange.

  The syringe device of the present invention comprises the above-described syringe holder and syringe of the present invention.

  According to the present invention, a luer lock connection is possible by using a spiral protrusion formed on the inner peripheral surface of one end of the syringe holder. Further, if the syringe holder is divided and the spiral protrusion side portion is removed, the nozzle of the syringe is exposed, so that slip connection is possible. Furthermore, even when either the luer lock connection or the slip connection is performed, the portion of the syringe holder that includes the finger hooking flange is mounted on the syringe main body, so that a good pushing operability of the plunger is ensured.

  In the syringe holder according to the present invention, a large inner diameter portion having an inner diameter larger than an outer diameter of the large diameter portion of the syringe main body is formed on an inner peripheral surface of the other end of the holder main body. It is preferable that a small inner diameter portion having an inner diameter smaller than the outer diameter of the large diameter portion of the syringe main body is formed on the spiral protrusion side. By providing the large inner diameter portion at the other end of the holder main body, the large diameter portion of the syringe main body can be accommodated in the holder main body. Further, since the holder main body includes the small inner diameter portion on the spiral protrusion side of the large inner diameter portion, it is possible to restrict the syringe body from moving toward the spiral protrusion side with respect to the syringe holder during the pushing operation of the plunger. .

  It is preferable that the syringe holder of the present invention further includes a retaining plate in which a through hole having a smaller diameter than the large diameter portion of the syringe body is formed at the other end of the holder body. Thereby, the syringe main body inserted in the syringe holder can be prevented from falling off from the end opposite to the spiral protrusion.

  Preferably, the syringe holder of the present invention further includes a retaining plate at the other end of the holder body, and the large-diameter portion of the syringe body is sandwiched between the holder body and the retaining plate. Thereby, the syringe main body inserted in the syringe holder is held without moving in the longitudinal direction with respect to the syringe holder.

  In this case, it is preferable that an engagement structure that engages with each other is provided on the holder body and the retaining plate. Thereby, since the retaining plate can be easily fixed to the holder body, the assembly of the syringe holder is facilitated.

  In the syringe holder of the present invention described above, it is preferable that the holder body and the retaining plate are integrally formed via a hinge. Thereby, since a syringe holder can be comprised by one component, management and assembly of components become easy and production cost can be reduced.

  Hereinafter, the present invention will be described in detail with reference to specific embodiments.

  FIG. 1 is a bottom view showing a schematic configuration of a syringe apparatus according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the syringe apparatus taken along line II-II in FIG. The syringe device according to this embodiment includes a syringe 10 and a syringe holder 100.

  The syringe 10 includes a cylindrical syringe body 11, a gasket 12 disposed in the syringe body 11, and a plunger 13 inserted into the syringe body 11.

  The syringe body 11 includes a nozzle 11a from which a chemical solution is discharged at one end (hereinafter referred to as “front end”) and a large-diameter portion 11b at the other end (hereinafter referred to as “rear end”). The portion of the syringe main body 11 excluding the nozzle 11a and the large diameter portion 11b has a cylindrical shape with a constant outer diameter, and this portion is referred to as a cylindrical portion 11c. Compared to the outer diameter of the cylindrical portion 11c, the outer diameter of the nozzle 11a is small, and the outer diameter of the large-diameter portion 11b is large.

The plunger 13 includes a male screw 13a at one end thereof, a plate-like pressing plate 13b at the other end, and a shaft portion 13c that connects these. The outer diameter of the portion 13c ₁ adjacent to the male screw 13a of the shaft portion 13c is slightly larger than the outer diameter of the other portion 13c ₂ .

  A female screw is formed on the end face of the gasket 12 on the plunger 13a side. The gasket 12 and the plunger 13 are coupled by screwing the female screw and a male screw 13 a formed at the tip of the plunger 13. When the plunger 13 is inserted into and removed from the syringe main body 11, the gasket 12 slides in the syringe main body 11 in the longitudinal direction while its outer peripheral surface is in close contact with the cylindrical inner peripheral surface of the syringe main body 11.

  The syringe 10 shown in FIGS. 1 and 2 is a prefilled syringe in which a drug solution is filled in a space formed by the gasket 12 and the syringe body 11 on the nozzle 11a side. A cap 14 is attached to the nozzle 11a in order to prevent the filled chemical liquid from leaking out.

  The material of the syringe body 11 is not particularly limited, but for example, a resin or glass having high transparency and high chemical resistance is preferable. As the resin, for example, cyclic polyolefin, polycarbonate, polyethylene terephthalate, polypropylene, polyethylene naphthalate and the like are preferable. The nozzle 11a preferably has a 6/100 taper surface defined by ISO594-1.

  The material of the gasket 12 is not particularly limited, but for example, butyl rubber, styrene thermoplastic elastomer, and the like are preferable.

  The material of the plunger 13 is not particularly limited, but for example, a resin such as polypropylene or polyethylene is preferable.

  The material of the cap 14 is not particularly limited, but is preferably an elastic material, for example, butyl rubber, styrene thermoplastic elastomer, or the like.

  The syringe body 11 of the syringe 10 is inserted into the syringe holder 100.

  FIG. 3 is a bottom view of the syringe holder 100 before the syringe body 11 is inserted. 4A is a cross-sectional view of the syringe holder 100 taken along the line IVA-IVA in FIG. 3, and FIG. 4B is a rear view of the syringe holder 100 according to the embodiment of the present invention.

  The syringe holder 100 includes a holder main body 110 and a retaining plate 130, which are integrally formed via a hinge 119. An alternate long and short dash line 110 a indicates the central axis of the holder body 110.

  The holder body 110 is generally cylindrical. A spiral protrusion (internal thread) 112 is formed on the inner peripheral surface of one end (hereinafter referred to as “front end”) of the holder body 110 in the direction of the central axis 110a, and the inner periphery of the other end (hereinafter referred to as “rear end”). A large inner diameter portion 113 having an enlarged inner diameter is formed on the surface. A portion of the holder body 100 where the spiral protrusion 112 is formed is referred to as a fastening portion 111. A portion of the holder body 110 between the fastening portion 111 and the large inner diameter portion 113 has a cylindrical inner peripheral surface having a constant inner diameter, and this portion is referred to as a small inner diameter portion 114. The inner diameter of the small inner diameter portion 114 is smaller than the inner diameter of the large inner diameter portion 113 adjacent to the rear end side, and the inner diameter of the spiral protrusion 112 of the fastening portion 111 adjacent to the inner end portion is adjacent to the front end side (that is, of the female screw). Larger than the diameter). The central axes of the spiral protrusion 112, the small inner diameter portion 114, and the large inner diameter portion 113 coincide with the central axis 110a.

  A finger hooking flange 117 is formed on the outer peripheral surface of the rear end of the holder body 110 so as to protrude outward (in a direction perpendicular to the central axis 110a). In the direction of the central axis 110a, the large inner diameter portion 113 and the finger hooking flange 117 are formed at substantially the same position. Thereby, it is prevented that the thin part with a low intensity | strength is formed in the holder main body 110. FIG.

  The inner diameter of the spiral protrusion 112 of the fixing part 111 is larger than the outer diameter of the nozzle 11 a of the syringe body 11 and smaller than the outer diameter of the cylindrical part 11 c of the syringe body 11. Further, the inner diameter of the small inner diameter portion 114 is larger than the outer diameter of the cylindrical portion 11 c of the syringe main body 11 and smaller than the outer diameter of the large diameter portion 11 b of the syringe main body 11. This prevents the syringe body 11 inserted in the holder body 110 from moving relative to the holder body 110 toward the fastening portion 111.

  Further, the inner diameter of the large inner diameter portion 113 is larger than the outer diameter of the large diameter section 11 b of the syringe body 11. Thereby, the large diameter portion 11 b of the syringe main body 11 can be accommodated in the large inner diameter portion 113.

  A notch 115 that allows the holder main body 110 to be divided in the direction of the central axis 110a is formed in a region between the fastening portion 111 and the large inner diameter portion 113 of the holder main body 110.

  A plurality of hook-shaped protrusions 116 parallel to the central axis 110 a are formed on the outer peripheral surface of the fastening portion 111. The hook-shaped projection 116 functions as a slip stopper when the holder main body 110 is sandwiched between fingers to make a luer lock connection. However, a shape having an anti-slip function other than the plurality of hook-shaped protrusions 116 may be formed on the outer peripheral surface of the fastening portion 111, or a smooth cylindrical surface may be used.

  The retaining plate 130 is connected to a hinge 119 provided on the finger hanging flange 117. The retaining plate 130 can be pivoted about the hinge 119 and overlapped with the finger hooking flange 117 (see FIGS. 1 and 2).

  The finger hooking flange 117 and the retaining plate 130 are provided with an engaging structure that engages with each other. This engagement structure includes a pair of locking claws 118 projecting from the rear end surface of the finger hooking flange 117 and a pair of locking holes 131 formed in the retaining plate 130. When the retaining plate 130 is overlaid on the finger hanging flange 117, the pair of locking claws 118 are fitted into the pair of locking holes 131, and the hook shape of the pair of locking claws 118 is a pair of locking holes. Engages with the edge of the hole 131. Thus, the engagement structure including the pair of locking claws 118 and the pair of locking holes 131 maintains the tightly fixed state between the finger hooking flange 117 and the retaining plate 130.

  A through hole 133 is formed in the retaining plate 130. When the retaining plate 130 is overlaid on the finger hooking flange 117 and the pair of locking claws 118 and the end edges of the pair of locking holes 131 are engaged, the center of the through hole 133 is the center of the holder body 110. It coincides with the axis 110a.

  The inner diameter of the through hole 133 is smaller than the outer diameter of the large diameter portion 11 b of the syringe body 11. As a result, the syringe body 11 can be prevented from falling off the syringe holder 100 through the through hole 133 of the retaining plate 130.

Further, the inner diameter of the through-hole 133 is slightly smaller than the outer diameter of the portion 13c ₁ adjacent to the male screw 13a of the plunger 13 and larger than the outer diameter of the other portion 13c ₂ . This prevents the plunger 13 from falling off the retaining plate 130 after the plunger 13 is inserted into the through hole 133 of the retaining plate 130.

  The length of the holder body 110 in the longitudinal direction is substantially the same as that of the syringe body 11. As shown in FIG. 2, in the state where the syringe main body 11 is inserted into the holder main body 110, the nozzle 11a, the cylindrical portion 11c, and the large diameter portion 11b of the syringe main body 11 are the fixing portion 111 and the small inner diameter portion of the holder main body 110. 114 and the large inner diameter portion 113 are set to have the longitudinal dimensions of the fastening portion 111, the small inner diameter portion 114, and the large inner diameter portion 113 so that the positions in the direction of the central axis 110a substantially coincide with each other.

  The material of the holder main body 110 and the retaining plate 130 is not particularly limited. For example, a resin having high transparency, good moldability, and light weight is preferable. Since the holder main body 110 has high transparency, it is possible to see through the medicinal solution in the inserted syringe main body 11 and the label attached to the outer peripheral surface thereof. Further, by using a material with good moldability, it is possible to easily form a sufficiently large finger-hanging flange 117 or an engagement structure between the finger-hanging flange 117 having a complicated shape and the retaining plate 130. it can. As the resin, for example, polycarbonate, polypropylene, polyethylene naphthalate, polyethylene terephthalate and the like are preferable. The spiral protrusion 112 is preferably a spiral protrusion defined in ISO594-2.

  Next, an example of a method for assembling the syringe device (see FIGS. 1 and 2) of the present invention using a prefilled syringe will be described.

  First, the syringe body 11, the gasket 12, and the cap 14 constituting the syringe 10 are each cleaned and sterilized.

  Next, the cap 14 is attached to the nozzle 11 a of the syringe body 11. Then, a predetermined amount of chemical solution is filled into the syringe body 11 from the opening on the large diameter portion 11b side, and then the gasket 12 is inserted. Thus, the drug solution is held in the sealed space in the syringe body 11. These processes are performed in an atmosphere in which hygienic conditions are strictly controlled. When the drug solution has heat resistance, the syringe body 11 filled and held with the drug solution may be sterilized with high-temperature steam.

  Next, the syringe body 11 filled with the drug solution from the large inner diameter portion 113 side of the holder body 110 of the syringe holder 100 shown in FIGS. 4 (A) and 4 (B) is placed with the nozzle 11a facing forward. insert. Then, the retaining plate 130 is rotated around the hinge 119 so as to be superimposed on the finger hooking flange 117, and the pair of locking claws 118 and the end edges of the pair of locking holes 131 are engaged. Then, the plunger 13 is inserted into the through hole 133 of the retaining plate 130, the male screw 13 a at the tip thereof is screwed into the female screw of the gasket 12, and the plunger 13 and the gasket 12 are coupled. Thus, the syringe device shown in FIGS. 1 and 2 is obtained. The syringe apparatus is shipped after being provided with a predetermined packaging. After this, since the syringe main body 11 is handled in the state inserted in the syringe holder 100, even if the syringe main body 11 is made of glass, the breakage can be prevented.

  Next, an example of a method of using the syringe device of the invention using a prefilled syringe will be described.

  First, a description will be given of a case where a female luer constituting a part of an injection needle, a three-way cock, or the like is connected to the nozzle 11a of the syringe 10 by luer lock connection. First, in the state of FIG.1 and FIG.2, the cap 14 attached to the nozzle 11a is removed. Next, the nozzle 11a is inserted into the lumen of the needle base of the injection needle or the lumen of the tip of the female luer, and formed on the outer periphery of the spiral protrusion or the female luer tip formed on the outer periphery of the needle base of the injection needle. The formed spiral protrusion and the spiral protrusion 112 formed on the inner peripheral surface of the fastening portion 111 of the holder main body 110 are screwed together. Then, the index finger and the middle finger are put on the finger hook flange 117 formed on the holder main body 110, the push plate 13b of the plunger 13 is pushed with the thumb, and the liquid medicine filled in the syringe main body 11 is injected into the injection needle attached to the nozzle 11a. Or it is made to discharge through a female lure.

  The finger-hanging flange 117 formed on the syringe holder 100 is large enough to perform the pushing operation of the plunger 13. Therefore, the pushing operation can be performed stably. Further, since the luer lock connection can be performed using the spiral protrusion 112 of the holder main body 110, since the drug solution filled in the syringe main body 11 has a high viscosity, a high pressure is generated in the syringe main body 11 during discharge. Even if it occurs, the needle and female luer will not fall out.

  Next, a case where the nozzle 11a of the syringe 10 is slip-connected by being inserted into a slit provided in a rubber valve body of a needleless port will be described. First, in the state of FIG. 1 and FIG. 2, the notch 115 is formed by gripping the front end side portion and the rear end side portion with respect to the notch 115 of the holder body 110 and applying a twisting force to the holder body 110. The holder main body 110 is threaded at the spot, and is divided into a front end portion and a rear end portion. Then, the front end side portion of the holder body 110 is removed. Thus, as shown in FIG. 5, the front end portion of the syringe body 11 is exposed. In FIG. 5, reference numeral 110 ′ denotes a rear end side portion of the holder main body 110 (hereinafter referred to as “holder main body rear end side piece”). Next, the cap 14 attached to the nozzle 11a is removed, and the nozzle 11a is inserted into a slit provided in the rubber valve body of the needleless port. Then, the index finger and the middle finger are put on the finger-hanging flange 117, and the push plate 13b of the plunger 13 is pushed with the thumb to discharge the liquid medicine filled in the syringe body 11 from the nozzle 11a.

  As described above, the fastening portion 922 of the conventional syringe holder 920 shown in FIG. 6 is obstructive when the slip connection is performed. On the other hand, in this embodiment, the holder main body 110 is divided into two in the longitudinal direction, and the front end side portion of the holder main body 110 including the fastening portion 111 surrounding the periphery of the nozzle 11a is removed. Accordingly, the nozzle 11a can be inserted into the slit of the valve body of the needleless port to perform the slip connection.

  Moreover, the holder main body retracting side piece 110 ′ including the finger hanging flange 117 is attached to the syringe main body 11, and the large diameter portion 11 b of the syringe main body 11 is sandwiched between the holder main body retracting side piece 110 ′ and the retaining plate 130. ing. Therefore, the pushing operation of the plunger 13 can be stably performed using the finger hooking flange 117 of the holder main body retreating side piece 110 ′, and the pushing operability is not different from that in the case of the luer lock connection.

  As described above, according to the present invention, since the spiral protrusion 112 is formed at the tip of the holder main body 110, the nozzle 11a of the syringe 10 can be luer-lock connected. Moreover, if the holder main body 110 is divided into two at the notch 115 portion of the holder main body 110 and the front end side portion is removed, the nozzle 11a of the syringe 10 can be slip-connected. The holder main body 110 includes a finger-engaging flange 117 that is sufficiently larger on the rear end side than the notch 115, so that the operability of pushing the plunger 13 can be improved regardless of whether the luer lock connection or the slip connection is performed. It is good.

  The above-described embodiment is an example, and the present invention is not limited to this.

  For example, the shape of the notch 115 formed in the holder main body 110 to divide the holder main body 110 may be any shape such as a circle, an ellipse, a triangle, various polygons in addition to the rectangle shown in FIGS. It may be a shape. Further, the number of notches can be set as appropriate in consideration of the force required to divide the holder body 110. Further, the longitudinal direction of the notch does not need to coincide with the circumferential direction of the holder body 110 as shown in FIGS. 3 and 4, and may be parallel to the central axis 110a or spirally. You may extend a notch. Moreover, the thickness of the portion of the holder body 110 where the notch 115 is formed may be reduced to improve the division of the holder body 110.

  Further, notches 115 may be formed at a plurality of different positions in the direction of the central axis 110a so that the user can appropriately select the division position of the holder main body 110.

  The shape, size, and the like of the finger hook flange 117 are not limited to the above embodiment, and can be changed as appropriate in consideration of the push-in operability of the plunger 13.

  In the above embodiment, the finger hooking flange 117 is provided at the rear end of the holder main body 110. However, the position of the finger hooking flange 117 in the direction of the central axis 110a does not need to be the rear end of the holder main body 110. Any of the rear end sides of the notches 115 may be used. In this case, the engagement structure for locking the retaining plate 130 to the rear end of the holder main body 110 may be provided at a location other than the finger hooking flange 117 of the holder main body 110. The holder main body 110 may be connected to a portion other than the finger hooking flange 117 via a hinge 119.

  In the above embodiment, the retaining plate 130 is integrated with the holder main body 110 via the hinge 119, but the retaining plate 130 and the holder main body 110 may be separate.

  In the above embodiment, the large inner diameter portion 113 is formed on the inner peripheral surface of the rear end of the holder main body 110, but the large inner diameter portion 113 may not be formed. In the present invention, it is only necessary that the large diameter portion 11b of the syringe main body 11 can be sandwiched between the holder main body 110 and the retaining plate 130 in the direction of the central axis 110a. For example, without forming the large inner diameter portion 113 at the rear end of the holder main body 110, a recess for accommodating the large diameter portion 11b of the syringe main body 11 can be formed on the surface of the retaining plate 130 on the holder main body 110 side.

  The engagement structure provided in the holder main body 110 and the retaining plate 130 is not limited to the above embodiment as long as the retaining plate 130 can be fixed to the holder main body 110. For example, the retaining plate 130 may be provided with a locking claw, and the finger hooking flange 117 may be provided with a locking hole into which the locking claw is fitted. In this case, the locking claw that protrudes from the surface of the finger hooking flange 117 that contacts the finger can function as a slip stopper. Further, the holder main body 110 and the retaining plate 130 may be separated from each other, and the engagement structure between them may be a screwed structure.

  In the above embodiment, the syringe holder 100 includes the holder main body 110 and the retaining plate 130, but the retaining plate 130 can be omitted. Even if the retaining plate 130 is omitted, both the luer lock connection and the slip connection are possible, and in any case, the good pushing operability of the plunger 13 can be obtained.

  In the above embodiment, the case where the syringe 10 is a prefilled syringe has been described as an example. However, the present invention can also be applied to a syringe that is not prefilled with a chemical solution.

  Although the field of use of the present invention is not particularly limited, it is preferable to use the present invention for a syringe provided with a glass syringe body that cannot form a large finger-hanging flange because the effects of the present invention are remarkably exhibited.

FIG. 1 is a bottom view showing a schematic configuration of a syringe device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the syringe device taken along the line II-II in FIG. FIG. 3 is a bottom view of the syringe holder according to the embodiment of the present invention before the syringe body is inserted. 4A is a cross-sectional view of the syringe holder taken along line IVA-IVA in FIG. 3, and FIG. 4B is a rear view of the syringe holder according to the embodiment of the present invention. FIG. 5 is a bottom view showing a schematic configuration of a syringe device according to an embodiment of the present invention in which the front end side portion of the holder body is removed. FIG. 6 is a cross-sectional view of a syringe device in which a conventional syringe holder is mounted on a syringe.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Syringe 11 Syringe main body 11a Nozzle 11b Large diameter part 11c Cylindrical part 12 Gasket 13 Plunger 13a Male screw 13b Push plate 13c Shaft part 14 Cap 100 Syringe holder 110 Holder main body 110a Center axis 111 of a holder main body 111 Fixing part 112 Spiral protrusion 113 Large inner diameter portion 114 Small inner diameter portion 115 Notch 116 Hook-shaped projection 117 Finger hook flange 118 Locking claw 119 Hinge 130 Retaining plate 131 Locking hole 133 Through hole

Claims (7)

A syringe holder having a nozzle for discharging a chemical solution at one end and a syringe body having a large diameter portion at the other end,
A cylindrical ridge formed on the inner peripheral surface of one end is formed with a spiral ridge to be screwed with the injection needle connected to the nozzle, and is formed with an outwardly protruding finger hooking flange on the outer peripheral surface of the other end or the vicinity thereof. At least a holder body,
A syringe holder characterized in that a notch that allows the holder body to be divided in the longitudinal direction is formed in a region of the holder body between the spiral protrusion and the finger-hanging flange. .   On the inner peripheral surface of the other end of the holder main body, a large inner diameter portion is formed whose inner diameter is larger than the outer diameter of the large diameter portion of the syringe main body. The syringe holder according to claim 1, wherein a small inner diameter portion is formed that is smaller than an outer diameter of the large diameter portion of the syringe main body.   The syringe holder according to claim 1, further comprising a retaining plate in which a through-hole having a diameter smaller than that of the large-diameter portion of the syringe body is formed at the other end of the holder body.   The syringe holder according to claim 1, further comprising a retaining plate at the other end of the holder body, wherein the large-diameter portion of the syringe body is sandwiched between the holder body and the retaining plate.   The syringe holder according to claim 3 or 4, wherein the holder main body and the retaining plate are provided with engagement structures that engage with each other.   The syringe holder according to any one of claims 3 to 5, wherein the holder main body and the retaining plate are integrally formed via a hinge.   The syringe apparatus which consists of the syringe holder and syringe in any one of Claims 1-6.

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