JP2012245154A - Drug solution detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drug solution detector including a sensor holder to be attached to various types of drip chambers and reducing manufacturing costs.SOLUTION: The drug solution detector 1 includes a sensor holder 10 which is detachably attached to the drip chambers 110, and an alarm body 20. The sensor holder 10 comprises various types of adapters 30 which are adapted to various types of diameters and drip port heights of the drip chamber 110, and an adapter accommodation part 15 for accommodating the adapter 30. The adapter 30 corresponding to the type of the drip chamber 110 is attached to the adapter accommodation part 15, and the drip chamber 110 is fitted into the adapter 30. Thus, the sensor holder 10 is detachably attached.

Description

  The present invention relates to a chemical liquid detection device for detecting a chemical liquid falling in a drip tube communicating with a chemical liquid bottle via a tube.

  In general, when a drug solution is administered to a subject by infusion, the dosage rate and the timing of the completion of the dosage are important. For this reason, conventionally, a person in charge of medication has confirmed the medication speed and the timing of the completion of medication by visually observing the drug solution falling from the drip tube inserted between the drip bottle and the drip needle.

  However, due to the shortage of doctors and nurses, the duties of the person in charge of medicine are diverse and it is difficult to constantly monitor the infusion. Therefore, a chemical solution detection device that detects a chemical solution falling in the drip tube has been proposed (see, for example, Patent Document 1).

  In this chemical solution detection device, the drop of the chemical solution is detected by a sensor. The sensor is composed of a light emitting element and a light receiving element, and is built in a sensor holder attached to the drip tube. The sensor holder is provided with an insertion port, and the sensor holder is attached to the drip tube by inserting the drip tube into the insertion port.

  In a state where the sensor holder is attached to the drip tube, the light emitting element and the light receiving element face each other so as to sandwich the drop trajectory of the chemical solution. At the timing when the chemical liquid is present between the light emitting element and the light receiving element, the amount of light received by the light receiving element is smaller than the amount of light emitted from the light emitting element due to reflection on the surface of the chemical liquid and absorption in the chemical liquid. Therefore, by analyzing the intensity of the signal output from the light receiving element, it is possible to detect the presence or absence of the drop of the chemical solution.

  When the drop of the drug solution is detected, the lamp is turned on. When the drop of the drug solution cannot be detected for a predetermined time or longer, a buzzer sound is output to notify the medication person in charge of the medication speed or the medication end. be able to.

Registered Utility Model No. 3055280

  Here, various types of drip tubes currently exist. That is, the outer diameter of the infusion tube varies depending on the manufacturer that manufactures the infusion tube. In addition, since the drip tube for children is provided with a throttling tube for reducing the dripping amount of the drug solution, the drip port is located at a lower position than the drip tube for adults.

  For this reason, conventionally, a sensor holder has to be prepared for various infusion tubes. Specifically, various types of sensor holders having insertion ports adapted to various outer diameters of the infusion tube must be prepared. Furthermore, it is necessary to prepare a sensor holder in which the sensor is installed at a position lower than the tip of the diaphragm cylinder in correspondence with the drip cylinder for children.

  If you try to substitute another type of sensor holder, the outer diameter of the sensor holder insertion port and the drip tube will not match, and the drip tube will be crushed, and the desired dosing speed will not be achieved, or the sensor holder will keep the drip tube constant. This is because the sensor holder falls off from the drip tube and the drip tube positioning is not fixed, so that it is difficult to detect the chemical solution with high accuracy.

  However, if it is intended to prepare the sensor holder in accordance with various drip cylinders, it is necessary to prepare various molds for manufacturing the various sensor holders, a manufacturing line must be provided, and the manufacturing cost of the sensor holder is It will be significantly higher.

  The present invention has been proposed in order to solve the above-described problems, and an object of the present invention is to provide a chemical solution detection apparatus in which a sensor holder can be attached to various infusion tubes and manufacturing costs are reduced. .

  In order to achieve the above object, a chemical liquid detection apparatus according to the present invention is a chemical liquid detection apparatus that detects a chemical liquid falling in a drip tube that communicates with a chemical liquid bottle via a tube, and a light-emitting element that sandwiches the drop trajectory of the chemical liquid And a sensor holder that includes a sensor having a light receiving element and is detachably attached to the drip tube, and a notification unit that notifies the detection result of the chemical solution based on a signal output from the sensor, The holder further includes various adapters adapted to various diameters of the infusion tube and the height of the dropping port, and housing means for housing the adapter, and the adapter corresponding to the type of the infusion tube is in the housing means. It is mounted | worn and it attaches so that attachment or detachment is possible by the said infusion tube being engage | inserted by the said adapter.

  The adapter has a plate shape, penetrates through the plate surface, and is formed by cutting the plate surface from the fitting hole to the outer edge with a fitting hole slightly smaller than the diameter of the corresponding drip tube. And a pair of bendable clamps that extend from the both sides of the drip tube that extends so as to sandwich the fitting hole along the fitting hole until reaching the disconnection portion. A sum of the gap between the side wall of the housing means and the clamping part and the diameter of the fitting hole is the same as the diameter of the corresponding drip tube, and the clamping part is The diameter of the fitting hole when bent until it comes into contact with the side wall of the accommodating means may be the same as the diameter of the corresponding drip tube.

  The adapter may further include a notch portion that is provided on the inner peripheral surface of the fitting hole and facilitates the expansion of the clamping portion.

  The clamping part has a curved surface at an outer edge, the side wall of the accommodating means has a curved surface at a portion facing the curved surface of the clamping part, and the curvature of the curved surface of the clamping part is determined by the accommodating means. The length of the gap may be set according to the curvature of the curved surface of the clamping portion.

  The drip tube may have a flange at an upper end, and the adapter may further include a seating surface of the flange dug into the periphery of the fitting hole.

  The drip tube includes a flange provided at an upper end, and a throttle tube that adjusts a dosing rate for a child provided therein, and the adapter is formed at a peripheral edge of the fitting hole. It is also possible to further include a standing wall that is the same as or slightly higher than the length of the flange and is in contact with the flange.

  The adapter has a semi-cylindrical shape, and an inner diameter is slightly narrower than a diameter of the corresponding infusion tube, and when the corresponding infusion tube is inserted, a tube wall is expanded so as to sandwich the infusion tube. Also good.

  According to the present invention, it is not necessary to prepare a sensor holder in accordance with various infusion tubes, and the manufacturing cost of the chemical liquid detection device can be reduced.

It is a schematic diagram which shows schematic structure of the chemical | medical solution detection apparatus which concerns on this embodiment. It is a figure which shows the detailed structure of the sensor holder with which a chemical | medical solution detection apparatus is provided. It is a figure which shows an example of an adapter. It is a figure which shows the function of the clamping part which an adapter has. It is a figure which shows the adapter corresponding to the drip tube for children. It is sectional drawing which shows the attachment aspect to the sensor holder of the adapter corresponding to the drip tube for children. It is a perspective view which shows the other example of an adapter. It is sectional drawing which shows the attachment aspect to the sensor holder of the adapter which concerns on another example.

  Hereinafter, an embodiment of a chemical solution detection device according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic diagram showing a schematic configuration of a chemical liquid detection apparatus according to the present embodiment. The chemical liquid detection device 1 includes a sensor holder 10 that incorporates a sensor 11 that detects a chemical liquid 120, and an alarm body 20 that notifies a detection result. The sensor holder 10 and the alarm body 20 are connected by a cable. An output signal of the sensor 11 is input to the alarm main body 20 via a cable, and electric power is supplied from a power source included in the alarm main body 20 to the sensor 11 in the sensor holder 10 via the cable. The notification content by the alarm main body 20 is during or after the medication of the drug solution 120. The medicinal solution 120 is a liquid having a medicinal effect, and examples thereof include an anesthetic and an instillation.

  The chemical liquid 120 is accommodated in the chemical liquid bottle 100 and flows into the infusion tube 110 from the chemical liquid bottle 100 through the tube. In the drip tube 110, the chemical solution 120 falls from a dripping port 140 that is electrically connected to the tube, and is temporarily stored in the lower portion. The sensor holder 10 is detachably attached to the drip tube 110.

  Specifically, the sensor holder 10 is provided with an insertion port 13 into which the drip tube 110 is inserted. The insertion port 13 is provided through the sensor holder 10 from the upper surface to the lower surface of the sensor holder 10. The drip tube 110 is inserted into the insertion port 13. The sensor 11 includes a light emitting element 11a and a light receiving element 11b. The light emitting element 11a and the light receiving element 11b are arranged to face each other with the insertion port 13 interposed therebetween, and the drop locus of the chemical solution 120 is sandwiched when the infusion tube 110 is inserted.

  In addition, the adapter 30 for holding the drip tube 110 is detachably attached to the sensor holder 10. The adapter 30 is a plate-like member that holds the drip tube 110 from the periphery with a constant pressure. The adapter 30 is provided with a fitting hole 31 at a position corresponding to the insertion port 13. The fitting hole 31 press-fits the drip tube 110.

  The alarm main body 20 notifies the end of medication or the completion of medication according to the output signal of the sensor 11. Here, when the chemical | medical solution 120 is an anesthetic, the fall aspect in the drip pipe | tube 110 of an anesthetic is the flow under which a liquid column is formed. When the medicinal solution 120 is a drip medicine, the dropping mode of the drip medicine in the drip tube 110 is a drip drip.

  Therefore, when the anesthetic is dispensed, the alarm main body 20 reports whether the anesthetic is being dispensed or has been dispensed depending on whether the output signal of the sensor 11 indicates a flow-down. During the flow of the anesthetic, the amount of light received by the light receiving element 11b becomes smaller than the amount of light emitted from the light emitting element 11a due to reflection on the surface of the liquid column and absorption within the liquid column. The alarm main body 20 distinguishes between medication completion and medication completion according to the intensity of the signal output from the sensor 11.

  When the instillation is dispensed, the alarm main body 20 notifies the end of the infusion or the end of the administration depending on whether or not the output signal of the sensor 11 indicates dripping. While the instillation is dropping, the signal output from the sensor 11 becomes a pulse wave because the emitted light is inhibited and becomes small at the timing when the instillation is dropped. The alarm body 20 discriminates between medication and end of medication depending on whether or not the signal output from the sensor 11 is a pulse wave.

  Note that the alarm main body 20 is provided with a manual switch for switching whether the drug solution 120 is an anesthetic or an infusion.

  The alarm body 20 includes a medication in progress lamp 21, a medication end lamp 22, a speaker 23, and a volume knob 24. The alarm body 20 blinks the medication lamp 21 when detecting the drop of the drug solution 120. On the other hand, if the alarm main body 20 does not detect the drop of the drug solution 120, the alarm main body 20 turns on the medication end lamp 22 and outputs a buzzer sound from the speaker 23. The volume of the buzzer sound can be adjusted by the volume knob 24.

  The alarm body 20 includes a string member 25 whose both ends are fixed to the upper end surface of the alarm body 20. When the chemical liquid detection device 1 is used, the alarm main body 20 is suspended together with the chemical liquid bottle 100 by hooking the string member 25 on the chemical liquid bottle stand. Thereby, the load of the alarm main body 20 is not applied to the sensor holder 10, and the possibility that the sensor holder 10 is detached from the drip tube 110 is reduced.

  2A and 2B are diagrams showing a detailed configuration of the sensor holder 10 provided in the chemical liquid detection device 1, wherein FIG. 2A is a perspective view of the sensor holder 10 with the adapter 30 attached as viewed from the front side, and FIG. 10 is a top view of the sensor holder 10 to which the sensor holder 10 is attached, FIG. 10C is a perspective view of the upper housing of the sensor holder 10 as viewed from the back side, and FIG. 9D is a rear view of the sensor holder 10 to which the adapter 30 is attached. .

  As shown in FIG. 2, the sensor holder 10 has a chamfered rectangular parallelepiped shape. In addition to the insertion port 13, the sensor holder 10 is provided with an exposure window 14 through which the inserted drip tube 110 can be seen.

  The exposure window 14 is formed by digging one side surface of the sensor holder 10 with a constant width from the upper end to the lower end, and the depth of the digging reaches the insertion port 13. The exposure window 14 communicates the inside of the insertion port 13 and the outside of the sensor holder 10 from the side.

  An adapter accommodating portion 15 is formed on the upper part of the sensor holder 10, and the adapter 30 is detachably inserted into the adapter accommodating portion 15. The adapter accommodating portion 15 extends from the back surface side of the sensor holder 10 to the entire opening of the insertion port 13, and the range is dug from the top surface, and has approximately the same shape and approximately the same size as the adapter 30.

  A protrusion 15 a is provided on the bottom surface of the adapter housing portion 15. On the other hand, a recess (not shown) is provided on the bottom surface of the adapter 30, that is, the surface in contact with the bottom surface of the adapter housing portion 15. When the adapter 30 is accommodated in the adapter accommodating portion 15, the recess is caught in the protrusion 15 a, and the adapter 30 is locked in the adapter accommodating portion 15.

  Further, an engagement rod 16 is formed at the upper end of the wall that defines the adapter accommodating portion 15. The engagement rod 16 protrudes in parallel with the bottom surface of the adapter housing portion 15 so as to cover the peripheral portion of the adapter housing portion 15. When the adapter 30 is accommodated in the adapter accommodating portion 15, the upper surface of the adapter 30 comes into contact with the engagement rod 16. As a result, the adapter 30 is prevented from coming out above the sensor holder 10.

  Various adapters 30 are prepared according to the diameter of the drip tube 110. 3A and 3B are diagrams illustrating an example of the adapter 30, where FIG. 3A is a perspective view and FIG. 3B is a top view. The adapter 30 shown in FIG. 3 is used when the sensor holder 10 is attached to an infusion tube 110 having a diameter Lc.

  First, the peripheral edge of the fitting hole 31 of the adapter 30 is dug from the upper surface to form a flange seat surface 32. The flange seat surface 32 is fitted with the flange 130 of the drip tube 110 during use.

  Further, the adapter 30 is provided such that a pair of holding portions 34, 34 extending along the circumferential direction of the fitting hole 31 sandwich the fitting hole 31. Both ends of the holding portions 34 and 34 are separated. In other words, the adapter 30 has a disconnecting portion 33 that allows the fitting hole 31 to communicate with the outside of the adapter 30.

  A curved surface 35 that is curved toward the inner side of the adapter 30 is formed on the outer edge of the holding portion 34. The region sandwiched between the curved surfaces 35 includes the center C of the fitting hole 31. In other words, the curved surface 35 starts from the back side of the chord part of the semicircular region on the side of the disconnection portion 33 in the fitting hole 31.

  The adapter 30 is provided with a notch 36 on the inner peripheral wall of the fitting hole 31. The notch 36 is formed near the starting point of the curved surface 35. As will be described later, the holding portions 34 and 34 can be bent in directions away from each other. The notch 36 facilitates the bending of the clamping part 34 and sets a base point for the bending.

  FIG. 4 is a diagram illustrating the function of the clamping unit 34, and shows a cross-sectional view in a state where the adapter 30 is accommodated in the sensor holder 10. 4A is an overall view, and FIG. 4B is an enlarged view of the vicinity of the clamping portion 34.

  As shown in FIG. 4, the side wall 17 defining the adapter housing portion 15 has substantially the same shape as the outer shape of the adapter 30, but the curvature of the curved surface 18 formed at the portion facing the sandwiching portion 34 is the sandwiching portion. 34 is smaller than the curvature of the curved surface 35. Therefore, when the adapter 30 is inserted into the adapter accommodating portion 15, the gap portion 19 appears between the holding portion 34 and the side wall 17.

  Here, the fitting hole 31 has a diameter La shorter than the diameter Lc of the corresponding drip tube 110. This diameter La is set as the following equation.

Diameter La = (Diameter Lc of corresponding infusion tube 110) −2 × (width L1 of gap 19)
The width L <b> 1 of the gap 19 is a width on a line obtained by extending the diameter line CL of the fitting hole 31 that passes through the root of the sandwiching portion 34.

  Since the fitting hole 31 is set as described above and the gap portion 19 is generated, when the corresponding drip tube 110 is inserted into the fitting hole 31, the holding portions 34 and 34 bend the notch portion 36. As a base point, it bends away from each other, and the diameter of the fitting hole 31 is expanded. The clamping part 34 is bent until it comes into contact with the curved surface 18 of the side wall 17, and the diameter La of the fitting hole 31 is enlarged by 2 × (width L 1 of the gap part 19), and is the same as the diameter Lc of the corresponding infusion tube 110. Become long.

  Thus, the fitting hole 31 expands to the diameter Lc of the corresponding drip tube 110 due to the bending of the clamping portion 34. Therefore, it can be inserted into the sensor holder 10 while feeling a certain pressure only in the corresponding drip tube 110. Further, when the drip tube 110 is held at a predetermined pressure, the sensor holder 10 is prevented from falling off the drip tube 110. When the adapter 30 that does not match the type of the infusion tube 110 is attached to the sensor holder 10, the infusion tube 110 cannot enter the fitting hole 31, or the infusion tube 110 cannot be clamped by the clamping part 34, and the fitting hole It is in a state of being loosened within 31.

  The curved surface 35 is provided to form the gap portion 19. Therefore, the outer edge of the clamping part 34 does not need to be limited to a curved surface, and the width of the clamping part 34 may be adjusted so that the width L1 of the gap part 19 appears. For example, the clamping part 34 may have a rectangular shape with the outer edge cut one step. However, in the case of a rectangular shape, the tip of the sandwiching portion 34 comes into contact with the side wall 17 first. Therefore, adjustment is necessary so that the diameter of the fitting hole 31 matches the diameter of the drip tube 110 when the tip of the clamping portion 34 abuts against the side wall 17.

  Next, FIG. 5 is a figure which shows the adapter 30 corresponding to the drip tube 110 for children, (a) is a perspective view, (b) is a top view. FIG. 6 is a cross-sectional view showing a state in which the adapter 30 is attached to the sensor holder 10 and a corresponding drip tube 110 is fitted.

  The adapter 30 shown in FIG. 5 is used when the sensor holder 10 is attached to a drip tube 110 for children. The configuration of the holding portion 34, the configuration of the notch portion 36, the setting of the diameter of the fitting hole 31, and the setting of the curvature of the curved surface 35 of the holding portion 34 are the same as those of the adapter 30 in FIG.

  The adapter 30 adjusts the height of the dropping port 140. That is, the adapter 30 is provided with a standing wall 37 having a certain height along the periphery of the fitting hole 31 on the upper surface side. The flange 130 of the drip tube 110 abuts against the standing wall 37 during use.

  As shown in FIG. 6, the drip tube 110 for children is provided with a throttle tube 141 communicating with the inside of the tube. The dripping port 140 is provided at the tip of the throttle cylinder 141. The throttle tube 141 adjusts the amount of the drug solution 120 dropped once for children.

  The standing wall 37 is equal to or higher than the height of the throttle tube 141, and when the flange 130 of the drip tube 110 contacts the standing wall 37, the dripping port 140 provided at the tip of the throttle tube 141 is The position is higher than the sensor 11. Therefore, even if the sensor 11 is attached to the drip tube 110 for children, the sensor 11 can detect the chemical liquid 120 falling from the dropping port 140.

  Furthermore, another type of adapter 30 is shown in FIGS. FIG. 7 is a perspective view showing another example of the adapter 30. FIG. 8 is a cross-sectional view of the adapter 30 attached to the sensor holder 10 and the drip tube 110 inserted.

  As shown in FIG. 7, the adapter 30 is formed by integrally molding a semi-cylinder 38 and an insertion plate 39. The insertion plate 39 extends in the direction perpendicular to the axis of the semi-cylinder 38 from the upper end edge of the semi-cylinder 38 to the outer peripheral side of the cylinder. The insertion plate 39 is a member that is inserted into the adapter accommodating portion 15, has a recess on the bottom surface, and engages with the engagement rod 16 and the protrusion 15 a.

  The semi-cylinder 38 is a flexible member that supports the drip tube 110. The semi-cylinder 38 is supported so as to wrap around the semicircular region of the infusion tube 110. The semi-cylinder 38 is provided with an opening through which the light emitting element 11a and the light receiving element 11b are exposed so that the sensor 11 faces the locus of dropping of the chemical solution 120.

  The inner diameter of the half cylinder 38 is slightly smaller than the outer diameter of the drip tube 110. However, as shown in FIG. 8, the drip tube 110 can be inserted by bending the semi-cylinder 38 and increasing its diameter. In such an adapter 30, the semi-cylinder 38 is supported so as to cover the semi-cylindrical region of the infusion tube 110, so that the stability of the infusion tube 110 in the insertion port 13 is increased.

  As described above, the chemical liquid detection device 1 includes the sensor holder 10 and the alarm main body 20. The sensor holder 10 incorporates a sensor 11 having a light emitting element 11a and a light receiving element 11b that sandwich a drop locus of the chemical solution 120, and is detachably attached to the drip tube 110. The alarm body 20 notifies the detection result of the chemical 120 based on the signal output from the sensor 11. The sensor holder 10 further includes various adapters 30 adapted to various diameters and dropping port heights of the drip tube 110, and an adapter accommodating portion 15 that accommodates the adapter 30.

  And the sensor holder 10 is attached so that attachment or detachment is possible because the adapter 30 according to the kind of drip tube 110 is attached to the adapter accommodating part 15, and the drip tube 110 is fitted in the adapter 30. FIG.

  Thereby, it is not necessary to prepare the sensor holder 10 according to various infusion tubes 110, and the manufacturing cost of the sensor holder 10 can be reduced.

  The adapter 30 may have a plate shape and include a fitting hole 31, a disconnecting portion 33, and a sandwiching portion 34. The fitting hole 31 penetrates the plate surface and is slightly smaller than the diameter of the corresponding drip tube. The disconnection part 33 is formed by cutting out the plate surface from the fitting hole 31 to the outer edge. The holding part 34 extends from the both sides to the disconnection part 33 along the fitting hole 31, is formed of a deflectable member, and holds the drip tube 110 inserted into the fitting hole 31 from both sides.

  Then, the total value of the gap portion 19 between the side wall 17 of the adapter accommodating portion 15 and the sandwiching portion 34 and the diameter of the fitting hole 31 is adjusted to be the same as the diameter of the corresponding drip tube 110 and sandwiched. The diameter of the fitting hole 31 when the portion 34 is bent until it abuts against the side wall 17 of the adapter accommodating portion 15 is the same as the diameter of the corresponding infusion tube 110.

  As a result, if the user selects the correct adapter 30, the user can insert it while feeling a constant pressure only in the corresponding drip tube 110. Therefore, the selection of the adapter 30 is not made erroneously, and the sensor adapter 10 can be prevented from dropping from the infusion tube 110 during the medication.

  Further, the adapter 30 can further include a notch portion 36 that is provided on the inner peripheral surface of the fitting hole 31 and facilitates the expansion of the clamping portion 34. Thereby, since the deflection | deviation base point of the clamping part 34 is set, the fitting hole 31 can be expanded easily with circular shape.

  In addition, the drip tube 110 has a flange 130 provided at the upper end and a throttle tube that adjusts the dosage rate for children provided inside. On the other hand, the adapter 30 corresponding to the drip tube 110 is provided with a standing wall 37 on the periphery of the fitting hole 31 with which the flange 130 abuts. The standing wall 37 is the same as or slightly higher than the length of the aperture cylinder 141. Thereby, even if the drip tube 110 for children is attached to the sensor holder 10, the light emitting element 11 a and the light receiving element 11 b of the sensor 11 can pinch the drop trajectory of the drug solution 120.

  Further, the adapter 30 has a semi-cylindrical shape, and its inner diameter is slightly narrower than the diameter of the corresponding infusion tube 110. When the corresponding infusion tube 110 is inserted, the tube wall expands so as to sandwich the infusion tube 110. You may comprise. Thereby, since the semi-cylinder 38 is supported so as to cover the semi-cylindrical region of the drip tube 110, the stability of the drip tube 110 in the insertion port 13 is increased.

DESCRIPTION OF SYMBOLS 1 Chemical solution detection apparatus 10 Sensor holder 11 Sensor 11a Light emitting element 11b Light receiving element 13 Insertion port 14 Exposure window 15 Adapter accommodating part 15a Protrusion 16 Engagement wall 17 Side wall 18 Curved surface 19 Clearance 20 Alarm body 21 Dosing lamp 22 Dosing end lamp 23 Speaker 24 Volume knob 25 String member 30 Adapter 31 Fitting hole 32 Flange seat surface 33 Breaking portion 34 Holding portion 35 Curved surface 36 Notch portion 37 Standing wall 38 Semi-cylinder 39 Insertion plate 100 Chemical solution bottle 110 Drip tube 120 Chemical solution 130 Flange 140 Drip port 141 Aperture tube

In order to achieve the above object, a chemical liquid detection apparatus according to the present invention is a chemical liquid detection apparatus that detects a chemical liquid falling in a drip tube that communicates with a chemical liquid bottle via a tube, and a light-emitting element that sandwiches the drop trajectory of the chemical liquid And a sensor holder that includes a sensor having a light receiving element and is detachably attached to the drip tube, and a notification unit that notifies the detection result of the chemical solution based on a signal output from the sensor, The holder further includes various adapters adapted to various diameters and dropping port heights of the infusion tube, and accommodating means for accommodating the adapter, and the adapter has a plate shape and penetrates the plate surface. A fitting hole slightly smaller than the diameter of the corresponding drip tube, a break portion formed by cutting out the plate surface from the fit hole to the outer edge, and the break portion along the fit hole. Until the above fit A pair of bendable sandwiching portions that extend from both sides to sandwich the drip tube inserted and fitted into the fitting hole, and an inner peripheral surface of the fitting hole. A notch portion that facilitates expansion, and the total value of the gap between the side wall of the housing means and the clamping portion and the diameter of the fitting hole is the same as the diameter of the corresponding drip tube The diameter of the fitting hole when the clamping portion is bent until it comes into contact with the side wall of the housing means is the same as the diameter of the corresponding drip tube .

Claims (7)

A chemical solution detection device for detecting a chemical solution falling in a drip tube communicating with a chemical solution bottle via a tube,
A sensor holder that includes a light-emitting element and a light-receiving element that sandwich the drop trajectory of the chemical solution, and is detachably attached to the infusion tube;
Informing means for informing the detection result of the chemical solution based on a signal output from the sensor;
With
The sensor holder is
Various adapters adapted to various diameters and dropping port heights of the drip tube,
Storage means for storing the adapter;
Further comprising
The adapter according to the type of the drip tube is attached to the housing means, and the drip tube is fitted into the adapter so that it can be attached and detached.
The chemical | medical solution detection apparatus characterized by this. The adapter is
Has a plate shape,
A fitting hole that penetrates the plate surface and is slightly smaller than the diameter of the corresponding drip tube,
A cut-off portion formed by cutting out the plate surface from the fitting hole to the outer edge;
A pair of bending parts that extend along the fitting hole so as to sandwich the fitting hole until reaching the disconnection part and sandwich the drip tube inserted into the fitting hole from both sides, and
Have
The total value of the gap between the side wall of the housing means and the clamping part and the diameter of the fitting hole is the same as the diameter of the corresponding drip tube,
The diameter of the fitting hole when the clamping portion is bent until it comes into contact with the side wall of the housing means is the same as the diameter of the corresponding infusion tube;
The chemical | medical solution detection apparatus of Claim 1 characterized by these. The adapter is
Further provided with a notch provided on the inner peripheral surface of the fitting hole to facilitate the expansion of the clamping part;
The chemical | medical solution detection apparatus of Claim 2 characterized by these. The clamping portion has a curved surface at the outer edge,
The side wall of the housing means has a curved surface at a portion facing the curved surface of the clamping part,
The curvature of the curved surface of the clamping part is larger than the curved surface of the side wall of the housing means, and the length of the gap is set by the curvature of the curved surface of the clamping part;
The chemical | medical solution detection apparatus of Claim 2 or 3 characterized by these. The drip tube has a flange at the upper end;
The adapter further includes a seating surface of the flange dug from the upper surface in the periphery of the fitting hole,
The chemical | medical solution detection apparatus in any one of Claims 2 thru | or 4 characterized by these. The infusion tube is
A flange provided at the upper end;
A squeeze cylinder that adjusts the dosing speed for children inside,
With
The adapter is
Further comprising a standing wall that is formed at the periphery of the fitting hole and is the same as or slightly higher than the length of the throttle tube, with which the flange abuts;
The chemical | medical solution detection apparatus in any one of Claims 2 thru | or 4 characterized by these. The adapter is
Having a semi-cylindrical shape, the inner diameter is slightly narrower than the diameter of the corresponding infusion tube, and when the corresponding infusion tube is inserted, the tube wall expands to hold the infusion tube,
The chemical | medical solution detection apparatus of Claim 1 characterized by these.

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