JP6253917B2 - Syringe - Google Patents

Description

  The present invention relates to a syringe in which a scale portion is provided on a syringe outer cylinder.

  Syringes are widely used for injection of chemicals into the body. Generally, a syringe includes a hollow syringe outer cylinder having a small-diameter distal end portion and a pusher that is provided with a gasket at the distal end and is slidably inserted into the syringe outer cylinder.

  The syringe is used in a wide variety of applications. For example, when a drug solution (medicine, nutrient, etc.) is to be delivered to a patient accurately and over a long period of time, the syringe is mounted and fixed on a syringe pump. The syringe pump can perform liquid feeding with high accuracy and automatically by extruding the placed and fixed syringe pusher while accurately controlling the speed with a slider.

  Generally, the syringe outer cylinder is provided with a scale portion indicating the amount of the chemical solution in the syringe outer cylinder (for example, see Patent Documents 1 and 2 below). In the case where the chemical solution is automatically administered using the syringe pump as described above, when the chemical solution is sucked from the chemical solution container, the suction amount is confirmed by looking at the scale portion. And in the state which attached the syringe to the syringe pump, an injection amount (dose) is confirmed by looking at a scale part.

JP 2008-272162 A Utility Model Registration No. 3126523

  By the way, the installation height and installation angle of the syringe pump are various, and the line-of-sight angle with respect to the syringe attached to the syringe pump also varies depending on the height and posture of the viewer. For this reason, the number (scale number) attached to the scale portion may not be visible or difficult to see depending on the installation height and installation angle of the syringe pump and the line-of-sight angle with respect to the syringe. Moreover, since the use of a syringe is various, it is desirable that a scale number can be easily visually recognized in various uses.

  The present invention has been made in consideration of such problems, and an object of the present invention is to provide a syringe capable of easily recognizing scale numbers in a wide variety of applications including administration of a chemical solution using a syringe pump. To do.

In order to achieve the above object, the present invention is a syringe provided with a scale portion on a syringe outer cylinder, and the scale portion is provided at different positions in the circumferential direction of the syringe outer cylinder in different directions. have a first scale number and the second scale numbers, the first scale number and the second scale numbers are all the feature numbers der Rukoto indicating the amount of liquid in the syringe outer tube To do.

  According to said structure, since a 1st scale number and a 2nd scale number are provided in a syringe outer cylinder in a different direction at a different position in the circumferential direction, the amount of liquid such as a drug solution in the syringe can be set in a wide angle range. It can be easily visually recognized. Therefore, for example, even when the installation height, the installation angle, and the line-of-sight angle of the syringe pump to which the syringe is attached are various, by easily visually recognizing at least one of the first scale number and the second scale number The amount of liquid can be easily confirmed.

  In the syringe, the first scale number may be provided vertically with respect to the syringe outer cylinder, and the second scale number may be provided laterally with respect to the syringe outer cylinder. According to this configuration, for example, when a chemical solution is sucked into the syringe, it is easy to confirm the suction amount into the syringe by looking at the first scale number in the vertical direction, and in the state where it is mounted on the syringe pump It is easy to confirm the injection amount (the amount of liquid delivered to the patient) by looking at the second scale number.

  In the above syringe, the first scale number is visible at least obliquely from above with the syringe mounted on the syringe pump, and the second scale number is mounted on the syringe pump. In such a state, it may be visible at least from the horizontal direction. According to this structure, the scale number provided in the syringe with which the syringe pump was mounted | worn can be visually recognized from both diagonally upward and a horizontal direction. Therefore, the amount of liquid in the syringe can be easily confirmed regardless of the installation height and angle of the syringe pump to which the syringe is attached and the line-of-sight angle with respect to the syringe.

  In the above syringe, a proximal end of the syringe outer cylinder is provided with a pair of finger hooks protruding outward in opposite radial directions with respect to the axis of the syringe outer cylinder, and passes through the axis of the syringe outer cylinder. In addition, when the axis in the direction perpendicular to the protruding direction axis of the pair of finger hanging portions is set as a reference position and the one side in the circumferential direction of the syringe outer cylinder is set as a positive angle, the angle ranges from 0 ° to + 90 °. A first scale number may be arranged, and the second scale number may be arranged in an angle range of 0 ° to −90 °. According to this configuration, the first scale number and the second scale number are arranged in the angle range, and the syringe is mounted on the syringe pump by arranging the first scale number and the second scale number. At least one of the numbers can be easily visually recognized.

  In the syringe, when the scale portion is viewed along an axis in a direction perpendicular to the projecting direction axis, the first scale number is visible, and the scale portion is configured along the projecting direction axis. The second scale number may be visible when viewing. According to this structure, when seeing the syringe with which the syringe pump was mounted | worn from diagonally upward, it is easy to visually recognize a 1st scale figure, and when seeing from a horizontal direction, it is easy to visually recognize a 2nd scale figure. Therefore, the amount of the chemical in the syringe can be easily confirmed by looking at at least one of the first scale number and the second scale number.

  Said syringe WHEREIN: The circumferential direction centerline of the said scale part may be shifted | deviated to the circumferential direction of the said syringe outer cylinder with respect to the said reference position. According to this configuration, it is possible to easily visually recognize at least one of the first scale number and the second scale number in both cases of viewing the syringe attached to the syringe pump from the horizontal direction and obliquely from above. can do.

  In the above syringe, a separation angle between the first scale number and the second scale number in the circumferential direction of the syringe outer cylinder may be 80 ° to 170 °. According to this configuration, it is possible to easily visually recognize either the first scale number or the second scale number in various applications, use conditions, and the like.

  According to the syringe of the present invention, the scale portion can be easily visually recognized in a wide variety of uses including administration of a chemical solution using a syringe pump.

It is a top view which shows the whole structure of the syringe which concerns on one Embodiment of this invention. It is the figure which expand | deployed on the plane the parallel part of the syringe outer cylinder in the syringe shown in FIG. 1, Comprising: It is a figure explaining the arrangement position of a 1st scale figure and a 2nd scale figure. It is the figure which looked at the syringe shown in FIG. 1 from the front end pipe part side, Comprising: It is a figure explaining the arrangement position of a 1st scale figure and a 2nd scale figure. It is a perspective view which shows the syringe shown in FIG. 1 and the syringe pump with which the said syringe is mounted | worn. It is a perspective view which shows the installation state of a syringe pump. It is a figure explaining the relationship between a syringe pump and a syringe, and a gaze angle. FIG. 7A is a diagram for explaining the appearance of the scale portion, FIG. 7B is a diagram for explaining another appearance of the scale portion, and FIG. 7C is a diagram for explaining another appearance of the scale portion. FIG. 7D is a diagram for explaining yet another way of viewing the scale portion.

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

  FIG. 1 is a plan view showing an overall configuration of a syringe 10 according to an embodiment of the present invention. The syringe 10 includes a syringe outer cylinder 12 that constitutes a main body portion, and a pusher 14 that is slidably inserted into the syringe outer cylinder 12.

  The syringe outer cylinder 12 includes a body part 16 having a lumen 15 (hollow part) extending in the axial direction, a distal end pipe part 18 projecting from the distal end part of the body part 16 in the distal direction, and a proximal end of the body part 16 And a flange portion 20 provided on the portion. The trunk | drum 16, the front-end | tip pipe part 18, and the flange part 20 are integrally formed.

  The body portion 16 includes a parallel portion 22 having a constant inner diameter and a tapered portion 24 whose diameter decreases from the distal end of the parallel portion 22 toward the distal end tube portion 18, and is formed in a hollow cylindrical shape as a whole. A proximal end opening 12 b communicating with the inner cavity 15 is provided at the proximal end of the body portion 16. On the outer peripheral surface of the body portion 16, a scale portion 26 indicating the amount of the chemical solution is provided.

  The distal end tube portion 18 forms a medicine discharge port 12a communicating with the inner cavity 15, and is configured as a luer connector. A lock portion 28 that protrudes in the axial direction from the distal end portion of the body portion 16 concentrically with the distal end tube portion 18 and has a female screw portion 27 formed on the inner peripheral surface is provided outside the distal end tube portion 18. One end of a tube 30 (see FIG. 4) can be connected to the distal end pipe portion 18. A non-illustrated indwelling needle or the like is connected to the other end of the tube 30 so that a drug solution can be injected into the patient.

  The flange portion 20 has a pair of finger hook portions 20a and 20a that protrude in the radially outward directions opposite to each other with the axis a0 of the syringe outer cylinder 12 as a reference. The flange portion 20 in the illustrated example has a substantially elliptical shape (see FIGS. 3 and 4). The width in the minor axis direction of the flange portion 20 is slightly wider than the outer diameter of the syringe outer cylinder 12. The width in the major axis direction of the flange portion 20 is larger than the width in the minor axis direction, and is set to a width that allows a person to hang a finger.

  The constituent material of the syringe outer cylinder 12 is not particularly limited. For example, polyolefin such as polypropylene, polyurethane, polyethylene, cyclic polyolefin, polymethylpentene 1, polyester, nylon, polycarbonate, polymethyl methacrylate (PMMA), polyetherimide ( PEI), polyethersulfone, polyetheretherketone (PEEK), fluororesin, polyphenylene sulfide (PPS), polyacetal resin (POM) and other resinous materials, stainless steel and other metallic materials, glass, etc. Good.

  Moreover, it is preferable that the constituent material of the syringe outer cylinder 12 is substantially transparent in order to ensure internal visibility. Moreover, it is preferable that it has strength, elasticity and chemical resistance that can withstand high pressure.

  In FIG. 1, the pusher 14 has a gasket 32 that can slide in a liquid-tight manner in the syringe outer cylinder 12 in the axial direction and feeds a chemical solution, and a pusher body 34 whose tip is connected to the gasket 32.

  The gasket 32 has a circular cross section and is made of an elastic material. The gasket 32 has a tapered tip end surface 33 having substantially the same inclination as the inclination of the tapered portion 24 of the syringe outer cylinder 12. The outer peripheral surface of the gasket 32 is in liquid-tight contact with the inner peripheral surface of the syringe outer cylinder 12 over the entire periphery. A liquid chamber is formed inside the syringe outer cylinder 12 by a space surrounded by the syringe outer cylinder 12 and the distal end surface of the gasket 32.

  The constituent material of the gasket 32 is not particularly limited, but, for example, olefin elastomer, styrene elastomer, polyester elastomer, polyurethane elastomer, vulcanized rubber such as silicone rubber, butyl rubber, fluororubber, etc., and those coated with fluororesin Or the like.

  The pusher main body 34 includes a shaft portion 36 having a distal end connected to the gasket 32 and extending a predetermined length, and a pusher flange 38 provided at the proximal end of the shaft portion 36. In the illustrated example, the shaft portion 36 has a cross-shaped cross section, and has a sufficient rigidity and a light weight. The pusher flange 38 has an area that can be pushed by a thumb with a thumb and is formed to be reasonably thin. The shaft portion 36 and the pusher flange 38 are integrally formed.

  The constituent material of the presser body 34 can be selected from those exemplified as the constituent material of the syringe outer cylinder 12 described above.

  The capacity | capacitance of the syringe 10 comprised as mentioned above is not limited to a specific capacity | capacitance, For example, it can set in the range of 5-100 mL. In this case, for example, the capacity of the syringe 10 can be set to 5 mL, 10 mL, 20 mL, 30 mL, 50 mL, and 100 mL.

  Next, the configuration of the scale part 26 will be specifically described. As shown in FIG. 1, the scale unit 26 includes a plurality of scale lines 40, and first scale numbers 42 and second scale numbers 44 attached to the scale lines 40. The plurality of scale lines 40 extend in the circumferential direction on the outer peripheral surface of the syringe outer cylinder 12, and are provided at intervals from each other in the axial direction of the syringe outer cylinder 12.

  The plurality of graduation lines 40 include a plurality of thick lines 40a provided at predetermined intervals in the axial direction of the syringe outer cylinder 12, and a plurality of thin lines 40b provided at equal intervals between the respective thick lines 40a. In the example of illustration, the thick line 40a has a long thing and a short thing, a long thing is provided at 10 mL space | interval, and a short thing is provided at 5 mL space | interval.

  As shown in FIG. 1, the first scale number 42 and the second scale number 44 are provided at different positions in the circumferential direction of the syringe outer cylinder 12 in different directions. Specifically, the first scale number 42 is provided on one side in the circumferential direction of the scale line 40, and the second scale number 44 is provided on the other side in the circumferential direction of the scale line 40. In other words, the scale line 40 is arranged between the first scale number 42 and the second scale number 44.

  In the present embodiment, a plurality of first scale numbers 42 are provided at intervals in the axial direction of the syringe outer cylinder 12. The first scale numbers 42 are provided vertically with respect to the syringe outer cylinder 12 (the direction in which the vertical direction of each number of the first scale numerals 42 is the axial direction of the syringe outer cylinder 12).

  In the present embodiment, a plurality of second scale numbers 44 are provided at intervals in the axial direction of the syringe outer cylinder 12. Further, the second scale number 44 is provided laterally with respect to the syringe outer cylinder 12 (the direction in which the vertical direction of each number of the second scale numeral 44 is the circumferential direction of the syringe outer cylinder 12).

  Here, for example, as shown in FIG. 2 and FIG. 3, it passes through the axis a <b> 0 of the syringe outer cylinder 12 and is perpendicular to the projection direction axis of the pair of finger hooks 20 a, 20 a (the major axis direction a <b> 1 of the flange portion 20). A positive angle on one side in the circumferential direction of the syringe outer cylinder 12 (upward in FIG. 2 and counterclockwise in FIG. 3), with the axis in the right direction (the minor axis direction axis a2 of the flange portion 20) as the reference position (0 °). And At this time, the first scale number 42 is provided in the angle range (A1) of 0 ° to + 90 °, and the second scale number 44 is provided in the angle range (A2) of 0 ° to −90 °.

  In addition, regarding the position (angle) of the first scale numeral 42 and the second scale numeral 44, the center position in the circumferential direction (arrow A direction) of the first scale numeral 42 is set to the position of the first scale numeral 42, respectively. It is regarded as a position, and the center position in the circumferential direction (arrow A direction) of the second scale numeral 44 is regarded as the position of the second scale numeral 44.

  As shown in FIG. 2, the circumferential center line L <b> 1 of the scale portion 26 (the whole scale portion 26 including the first scale number 42, the scale line 40, and the second scale number 44) is the minor axis direction of the flange portion 20. It is shifted by δ in the circumferential direction of the syringe outer cylinder 12 (minus direction in FIG. 2) with respect to the axis a2 (reference position). In this case, preferably, the first scale numeral 42 is provided in an angle range of + 30 ° to + 60 °, and the second scale numeral 44 is provided in an angle range of −40 ° to −90.

  The separation angle between the first scale number 42 and the second scale number 44 in the circumferential direction of the syringe outer cylinder 12 is set to, for example, about 80 ° to 170 °, and preferably about 80 ° to 120 °. Is set.

  For example, the syringe 10 can be attached to a syringe pump 50 illustrated in FIG. 4 to perform infusion for a patient. The syringe pump 50 is configured to have a slightly long overall shape in one direction (X direction in FIG. 4). The syringe pump 50 includes an operation unit 51 that performs an input operation by a user and outputs (displays) predetermined information, a syringe mounting unit 52 on which the syringe 10 is mounted and fixed, and a syringe outer cylinder 12. The clamp 54 for fixing and the drive part 56 for driving the pusher 14 of the syringe 10 mounted in the syringe mounting part 52 are provided.

  One end of an AC cable 57 is connected to the syringe pump 50. Power from an external power source (AC 100 V, AC 200 V, etc.) is supplied to the syringe pump 50 via the AC cable 57.

  The operation unit 51 includes a power switch 55 for turning on / off the power of the syringe pump 50, a setting dial 58 for setting a liquid feeding amount (see also FIG. 5), and a liquid feeding amount for displaying the set liquid feeding amount. A display unit 60, a liquid crystal monitor 62 for displaying various information related to operations, and the like are provided.

  The syringe mounting portion 52 of the illustrated example is provided with a curved portion 64 having a concave arcuate surface. The syringe outer cylinder 12 is placed and supported on the bending portion 64 in a direction in which the distal end tube portion 18 is directed to the left side (X1 direction). A set groove 66 (see FIG. 5) for holding and positioning the flange portion 20 of the syringe outer cylinder 12 is provided at the end of the bending portion 64 in the X2 direction. In a state where the flange portion 20 is held in the set groove 66, the protruding direction of the pair of finger hook portions 20 a and 20 a is parallel to the front-rear direction (Y direction) of the syringe pump 50.

  In FIG. 4, the clamp 54 includes an elevating rod 68 that protrudes from the upper surface of the operation unit 51 and can be raised and lowered in the Z direction, and a rotating lever 70 provided at the upper end of the elevating rod 68. The rotating lever 70 is always elastically biased downward by the elastic body. In order to fix the syringe 10 to the syringe mounting part 52, first, after placing the syringe outer cylinder 12 on the syringe mounting part 52, the clamp 54 is pulled up from the state of FIG. The rotation lever 70 is disposed above the syringe outer cylinder 12. Next, the rotating lever 70 is lowered by the elastic force of the elastic body, and the lower surface of the rotating lever 70 is brought into contact with the upper surface of the syringe outer cylinder 12. As a result, the syringe outer cylinder 12 is fixed to the syringe placement unit 52.

  The drive unit 56 is provided on the X2 direction side of the syringe mounting unit 52 and includes a slider 72 that moves in the X direction. The slider 72 has a function of holding the pusher flange 38 in the syringe 10 placed on the syringe placement part 52 with a pair of levers 74 and pushing out the pusher 14.

  In the syringe pump 50 configured as described above, the moving speed in the X1 direction, that is, the slider, based on the liquid feeding amount set by the setting dial 58 and the type (capacity) of the syringe 10 detected by the clamp 54. 72 determines the speed at which the pusher 14 is pushed. Then, the liquid is fed by pushing out the pusher 14 toward the syringe outer cylinder 12 while accurately controlling the speed.

  The syringe 10 according to the present embodiment is basically configured as described above, and the operation and effect of the syringe 10 will be described below in relation to the usage method of the syringe 10.

  For example, when performing infusion to the patient P using the syringe pump 50 and the syringe 10 described above, first, the syringe 10 is filled with a chemical solution before the syringe 10 is attached to the syringe pump 50. At this time, the person (operator) who fills the chemical liquid pulls the pusher 14 while holding the syringe 10 vertically with respect to the operator himself / herself in order to suck the chemical liquid from the chemical liquid container (chemical liquid bag or the like). It is normal to do. At this time, the operator sees the syringe 10 as shown in FIG. Since the first scale number 42 is vertically oriented, it is easy for the operator to read the first scale number 42 and the amount of the chemical liquid sucked can be easily grasped.

  Next, the syringe 10 filled with the chemical solution is attached to the syringe pump 50. For example, as shown in FIG. 5, the syringe pump 50 is used in a state where the syringe pump 50 is fixed to the mounting tool 82 of the infusion stand 80 and set obliquely. The mounting tool 82 can arbitrarily adjust the inclination angle and height while holding the syringe pump 50 stably. When the syringe 10 is attached to the syringe pump 50 as shown in FIG. 5, a necessary input operation (such as setting of the liquid feeding amount) is performed on the operation unit 51 to start liquid feeding.

  FIG. 6 is a schematic view showing a state in which an infusion stand 80 is placed beside the bed 78 where the patient P is sleeping, and a plurality of (three in the vertical direction in this example) syringe pumps 50 are installed on the infusion stand 80. FIG. Each syringe pump 50 is equipped with a syringe 10. In the example of FIG. 6, the syringe pump 50 is installed at each of a high position, a low position, and a position between them (intermediate height) in a state inclined with respect to the horizontal. In the following description related to FIG. 6, when distinguishing between the syringe pump 50 and the syringe 10 having different installation heights, the suffixes a to c are used for description.

  In the example of FIG. 6, the syringe pump 50b installed at the intermediate height has a larger inclination angle with respect to the horizontal than the other syringe pumps 50a and 50c.

  A medical worker (doctor, nurse, etc.) looks at the syringe 10 attached to the syringe pump 50 during liquid feeding, and appropriately confirms the injection amount (liquid feeding amount to the patient P) at that time. Specifically, the injection amount is confirmed by looking at the scale portion 26 provided in the syringe outer cylinder 12.

  In this case, as shown in FIG. 6, when looking at the syringes 10a to 10c attached to the syringe pumps 50a to 50c of various installation heights and angles, the height of the eyes varies depending on the height and posture of the viewer. The line-of-sight angles for 10a to 10c are also different. For example, in FIG. 6, the viewing angle (A) when the syringe 10a mounted on the syringe pump 50a at a high position is viewed from the same height is the horizontal direction (or a direction close to the horizontal). The line-of-sight angle (B) when viewing the syringe 10b attached to the intermediate height syringe pump 50b from a position higher than that is obliquely downward. The line-of-sight angle (C) when viewing the syringe 10b mounted on the intermediate-height syringe pump 50b from the same height is the horizontal direction (or a direction close to the horizontal). The line-of-sight angle (D) when the syringe 10c mounted on the syringe pump 50c having a low height is viewed from a position higher than that is obliquely downward.

  In the case of a line-of-sight angle (A) when the syringe 10a attached to the syringe pump 50a is viewed from the horizontal direction (or a direction close to the horizontal), the scale portion 26 looks as shown in FIG. 7A, for example. In the case of FIG. 7A, the first scale numeral 42 is difficult to see, but the second scale numeral 44 can be easily visually recognized. In this case, the second scale numeral 44 is easy to read because it is lateral to the syringe outer cylinder 12.

  In the case of a line-of-sight angle (B) when the syringe 10b attached to the syringe pump 50b is viewed obliquely from above, the scale portion 26 looks as shown in FIG. 7B, for example. In the case of FIG. 7B, the second scale numeral 44 is difficult to visually recognize, but the first scale numeral 42 can be easily visually recognized.

  In the case of a line-of-sight angle (C) when the syringe 10b mounted on the syringe pump 50b is viewed from the horizontal direction (or a direction close to the horizontal), the scale portion 26 looks as shown in FIG. 7C, for example. In the case of FIG. 7C, both the first scale numeral 42 and the second scale numeral 44 can be easily visually recognized. In this case, the second scale numeral 44 is easy to read because it is lateral to the syringe outer cylinder 12.

  In the case of a line-of-sight angle (D) when the syringe 10c attached to the syringe pump 50c is viewed obliquely from above, the scale portion 26 looks as shown in FIG. 7D, for example. In the case of FIG. 7D, the first scale numeral 42 cannot be visually recognized, but the second scale numeral 44 can be easily visually recognized.

  As described above, according to the syringe 10 according to the present embodiment, the syringe outer cylinder 12 is provided with the first scale numbers 42 and the second scale numbers 44 in different directions at different positions in the circumferential direction. The amount of liquid such as a chemical solution in the syringe 10 can be easily visually recognized in a wide angle range. Therefore, for example, even when the installation height, installation angle, and line-of-sight angle of the syringe pump 50 to which the syringe 10 is attached vary, at least one of the first scale numeral 42 and the second scale numeral 44 can be easily set. By visually recognizing, the amount of liquid in the syringe 10 can be easily confirmed.

  In particular, in the case of this embodiment, the first scale numeral 42 is provided vertically with respect to the syringe outer cylinder 12, and the second scale numeral 44 is provided laterally with respect to the syringe outer cylinder 12. With this configuration, for example, when the chemical solution is sucked into the syringe 10, it is easy to confirm the suction amount into the syringe 10 by looking at the first vertical scale numbers 42, and the syringe 10 is attached to the syringe pump 50. Thus, it is easy to confirm the injection amount (the amount of liquid delivered to the patient P) by looking at the second scale number 44 in the horizontal direction.

  In the case of the present embodiment, the first scale number 42 is visible from at least obliquely in the state where the syringe 10 is attached to the syringe pump 50, and the second scale number 44 is that the syringe 10 is a syringe. In a state where it is mounted on the pump 50, it is visible from at least the horizontal direction. According to this configuration, the scale numbers provided on the syringe 10 attached to the syringe pump 50 can be visually recognized from both the diagonally upper side and the horizontal direction. Therefore, the amount of liquid in the syringe 10 can be easily confirmed regardless of the installation height and angle of the syringe pump 50 to which the syringe 10 is attached and the line-of-sight angle with respect to the syringe 10.

  Furthermore, in the case of the present embodiment, the first scale numeral 42 is arranged in an angle range of 0 ° to + 90 ° with reference to the minor axis direction axis a2 of the flange portion 20, and the angle range of 0 ° to −90 °. The second scale numeral 44 is arranged, and the circumferential center line L1 of the scale portion 26 is shifted in the circumferential direction of the syringe outer cylinder 12 with respect to the position (reference position) of the minor axis direction axis a2. By arranging the first scale number 42 and the second scale number 44 in such an angle range, the first scale number 42 and the second scale are in a state where the syringe 10 is mounted on the syringe pump 50. At least one of the numbers 44 can be easily visually recognized.

  In the case of the present embodiment, when the scale portion 26 is viewed along the axis (short axis direction axis a2) perpendicular to the protruding direction axis (long axis direction axis a1) of the flange portion 20, the first scale number 42 is visible, and when the scale portion 26 is viewed along the projecting direction axis (long axis direction axis a1) of the flange portion 20, the second scale number 44 is visible. According to this configuration, when the syringe 10 attached to the syringe pump 50 is viewed obliquely from above, the first scale number 42 is easily visible, and when viewed from the horizontal direction, the second scale number 44 is easily visible. Therefore, the liquid amount (injection amount) in the syringe 10 can be easily confirmed by looking at at least one of the first scale number 42 and the second scale number 44.

  For example, when the separation angle between the first scale numeral 42 and the second scale numeral 44 in the circumferential direction of the syringe outer cylinder 12 is 80 ° to 170 °, Either the first scale number 42 or the second scale number 44 can be easily visually recognized.

  In the above description, the present invention has been described with reference to preferred embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. Yes.

DESCRIPTION OF SYMBOLS 10, 10a-10c ... Syringe 12 ... Syringe outer cylinder 14 ... Pusher 20 ... Flange part 26 ... Scale part 40 ... Scale line 42 ... 1st scale number 44 ... 2nd scale number 50, 50a-50c ... Syringe pump

Claims (7)

A syringe provided with a scale on the syringe outer cylinder,
The graduation is circumferentially different positions of the syringe barrel, have a first scale number and a second scale number provided in different orientations,
The first scale number and the second scale number are both numbers indicating the amount of liquid in the syringe outer cylinder.
A syringe characterized by that. The syringe according to claim 1,
The first scale number is provided vertically with respect to the syringe outer cylinder,
The second scale number is provided sideways with respect to the syringe outer cylinder.
A syringe characterized by that. The syringe according to claim 1 or 2,
The first scale number is visible at least obliquely from above with the syringe mounted on a syringe pump,
The second scale number is visible at least from the horizontal direction in a state where the syringe is mounted on the syringe pump.
A syringe characterized by that. The syringe according to any one of claims 1 to 3,
A proximal end of the syringe outer cylinder is provided with a pair of finger hooks protruding in the opposite radial outward directions with respect to the axis of the syringe outer cylinder,
When the axis in the direction passing through the axis of the syringe outer cylinder and perpendicular to the projection direction axis of the pair of finger hooks is a reference position, one side in the circumferential direction of the syringe outer cylinder is set as a positive angle. The first scale numbers are arranged in an angle range of ° to + 90 °, and the second scale numbers are arranged in an angle range of 0 ° to -90 °.
A syringe characterized by that. The syringe according to claim 4,
When the scale portion is viewed along an axis in a direction perpendicular to the protruding direction axis, the first scale number is visible.
When the scale part is viewed along the projecting direction axis, the second scale number is visible.
A syringe characterized by that. The syringe according to claim 4,
The center line in the circumferential direction of the scale portion is displaced in the circumferential direction of the syringe outer cylinder with respect to the reference position,
A syringe characterized by that. The syringe according to any one of claims 1 to 6,
The spacing angle in the circumferential direction of the syringe outer cylinder between the first scale numeral and the second scale numeral is 80 ° to 170 °.
A syringe characterized by that.

Images