WO2015143058A1 - Syringe with optical system for monitoring the position of the plunger rod - Google Patents
Syringe with optical system for monitoring the position of the plunger rod Download PDFInfo
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- WO2015143058A1 WO2015143058A1 PCT/US2015/021294 US2015021294W WO2015143058A1 WO 2015143058 A1 WO2015143058 A1 WO 2015143058A1 US 2015021294 W US2015021294 W US 2015021294W WO 2015143058 A1 WO2015143058 A1 WO 2015143058A1
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- Prior art keywords
- light
- syringe
- housing
- sensor
- light sensor
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/31566—Means improving security or handling thereof
- A61M5/31568—Means keeping track of the total dose administered, e.g. since the cartridge was inserted
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/007—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests for contrast media
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/31566—Means improving security or handling thereof
- A61M5/31573—Accuracy improving means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3306—Optical measuring means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3379—Masses, volumes, levels of fluids in reservoirs, flow rates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3379—Masses, volumes, levels of fluids in reservoirs, flow rates
- A61M2205/3389—Continuous level detection
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
- A61M5/1684—Monitoring, detecting, signalling or eliminating infusion flow anomalies by detecting the amount of infusate remaining, e.g. signalling end of infusion
Definitions
- This disclosure pertains to devices and methods used to control, transform or otherwise modulate the delivery of a substance, such as radiopaque contrast, to a delivery site and/or devices and methods that may be used to measure or otherwise make quantitative assessments of a medium delivered to a delivery site. More specifically, it is the intention of the following devices and methods to modulate and/or assess the delivery of media to a vessel, vascular bed, organ, and/or other corporeal structures so as optimize the delivery of media to the intended site, while reducing inadvertent or excessive introduction of the media to other vessels, vascular beds, organs, and/or other structures, including systemic introduction.
- a substance such as radiopaque contrast
- medium media
- agent substance, material, medicament, and the like
- fluidal materials may include, at least in part, a substance used in the performance of a diagnostic, therapeutic or/and prophylactic medical procedure and such use is not intended to be limiting.
- the technology relates to an apparatus having: a syringe housing; a plunger slidably received within the syringe housing between a first position and a second position, the plunger having a substantially opaque portion and a substantially translucent portion; and a light sensor module disposed on the syringe housing, wherein the light sensor module has a light sensor housing and a first sensor element and a second sensor element, wherein the first sensor element and the second sensor element are disposed within the sensor housing, wherein positioning the plunger at the first position aligns the substantially translucent portion with the first sensor element and positioning the plunger at the second position aligns the substantially translucent portion with the second sensor element.
- the apparatus has a lead extending from the light sensor.
- the apparatus includes an interface for connecting the lead to a measuring device, and wherein the measuring device displays a total volume injected and emits a warning of a critical outcome.
- the light sensor housing is releasably fixed to the syringe housing.
- the apparatus includes means for releasably securing the light sensor housing to the syringe housing.
- the means includes at least one of a clamp, a clasp, a hook and loop fastener, and a magnet.
- the apparatus further includes a light emitter module disposed on the syringe housing, wherein the light emitter module has a light emitter housing and a first emitter element and a second emitter element, wherein the first emitter element and the second emitter element are disposed within the emitter housing.
- positioning the plunger at the first position aligns the substantially translucent portion with the first emitter element and positioning the plunger at the second position aligns the substantially translucent portion with the second emitter element.
- the first emitter element and the first sensor element are aligned.
- the sensor housing is disposed on the syringe housing about 180 degrees from the sensor housing.
- the technology relates to an apparatus having: a syringe housing; a plunger slidably received within the syringe housing; a light sensor module secured to the syringe housing; and a light emitter module secured to the syringe housing, wherein the plunger has a plurality of substantially translucent portions.
- the plurality of substantially translucent portions includes: a first portion having a first translucency; and a second portion having a second translucency less than the first translucency.
- the plurality of substantially translucent portions includes a gradation.
- the light sensor module incudes a plurality of light sensors and the light emitter module includes a plurality of light emitters.
- the light emitter module is disposed at a location about the syringe housing at least about 90 degrees from the light sensor module.
- the technology relates to a method of determining a condition of a syringe, the method including receiving a first signal from a first light sensor, wherein a position of the first light sensor on the syringe is known.
- the method includes determining a first position of a piston disposed within the syringe based at least in part on the received first signal.
- the method further includes emitting a light signal from a light emitter disposed on the syringe.
- the method further includes receiving a second signal from a second light sensor, wherein a position of the second light sensor on the syringe is known.
- the method further includes determining a second position of the piston based at least in part on the received second signal.
- FIG. 1A depicts an exemplary synchronized agent delivery with indirect modulation, adjacent a distal portion of a treatment system therefor.
- FIG. IB depicts a top view of an exemplary synchronized agent delivery with indirect modulation, adjacent a proximal portion of such a treatment system.
- FIG. 1 C depicts a side view of an exemplary synchronized agent delivery with indirect modulation, adjacent a proximal portion of such a treatment system.
- FIG. ID depicts a side sectional view of the brake mechanism of the exemplary synchronized agent delivery arrangement of FIG. 1C.
- FIG. 2 depicts a perspective view of an embodiment of a monitoring syringe.
- FIG. 3 depicts a partially exploded perspective view of the monitoring syringe of FIG. 2.
- FIGS. 4A-4C depict partial enlarged perspective views of other embodiments of monitoring syringes.
- FIGS. 5A-5C depict embodiments of a monitoring syringe.
- FIG. 6 depicts a partially exploded perspective view of another embodiment of a monitoring syringe.
- FIG. 7 depicts a method of using a monitoring device.
- FIG. 8 depicts one example of a suitable operating environment in which one or more of the present examples may be implemented.
- an agent, medicant, or medium is preferably delivered to a specific site within the body, as opposed to a more general, systemic introduction.
- One such exemplary occasion is the delivery of contrast media to coronary vasculature in the diagnosis (i.e., angiography) and treatment (i.e., balloon angioplasty and stenting) of coronary vascular disease.
- the description, as well as the devices and methods described herein, may be used in modulating and/or monitoring medium delivery to the coronary vasculature in prevention of toxic systemic effects of such an agent.
- Exemplary other uses may include the delivery, injection, modulation, or measurement of: cancer treatment agent to a tumor, thrombolytic to an occluded artery, occluding or sclerosing agent to a vascular malformation or diseased tissue; genetic agent to a muscular bed, neural cavity or organ, emulsion to the eye, bulking agent to musculature and/or sphincter, imaging agent to the lymphatic system, antibiotics to an infected tissue, supplements in the dialysis of the kidney, to name but a few.
- Contrast Induced Nephropathy is a form of kidney damage caused by the toxic effects of dyes (radiopaque contrast media) used, for example, by cardiologists to image the heart and its blood vessels during commonly performed heart procedures, such as angiography, angioplasty, and stenting.
- dyes radiopaque contrast media
- the dye is toxic and is known to damage kidneys.
- most healthy patients tolerate some amount of the "toxicity” patients with poorly or non-functioning kidneys may suffer from rapidly declining health, poor quality of life, and significantly shortened life expectancy.
- Potential consequences of CIN include: irreversible damage to the kidneys, longer hospital stays, increased risk of heart disease, increased risk of long-term dialysis, and ultimately, a higher mortality risk.
- CIN has a significant economic burden on the healthcare system and currently there is no treatment available to reverse damage to the kidneys or improper kidney performance, once a patient develops CIN.
- the ability to "collect” contrast agent laden blood "downstream" from the visualization site may ensure visualization, but requires the complexity of placement and operation of a collection system.
- FIGS. 1A-1 D depict embodiments where a modulator is constructed so as to measure the amount of an agent delivered from the system.
- FIG. 2 for example, describes the use of a modulator
- the measurement system for the quantitative assessment of the volume of medium delivered and the inherent analysis of the total volume delivered versus some predetermined critical amount, such as the Gurm ratio, whether or not it is used with a modulator.
- measurements may be performed prior to a medium being modulated, simultaneously with modulation, or after the modulation process, if desired. Further, it is also contemplated that the measurement devices and methods may be used with any of the modulation systems, such as described in U.S. Patent Application Ser. No. 13/839,771. Moreover, the embodiments described herein are exemplary in nature and should not be construed as limiting the various combinations possible.
- control and modulation devices disclosed herein may send and/or receive a sensor signal so as to coordinate a valving, controlling, or otherwise modulating function on an injection agent before the agent enters an intended target injection site.
- Modulation may include, for example, valving (or otherwise modulating) an injection dispensed from an injection device.
- indirect valving or otherwise controlling mechanisms
- FIGS. 1 A- I D An example of an indirect modulation control system 10 is depicted in FIGS. 1 A- I D.
- a sensor 12 is deployed distally on a delivery catheter 14 (as seen in FIG.
- FIG. 1 A illustrates the positioning of the sensor 12 upon the distal tip of the delivery catheter 14 within the aorta 16 to the left coronary artery 18, off the aortic root 20.
- a distal pressure sensor in exemplary FIG. 1 A could take many forms, such as: a pressure wire alongside the catheter, a lumen within the catheter body for pressure measurement, a pressure sensor deployed within the distal tip of the catheter, and a pressure sensor deployed distally of the distal tip of the catheter and into the target vessel, to name but a few.
- modulating device 30 may include an inlet port 32 (from the injection device) and an outlet port 34 (to the delivery catheter 14).
- the flow of injection fluid may pass through the injection port 32 and into a fluid chamber 36 within a body or housing 38 of the modulator 30.
- the modulator 30 may have a plurality of vane/plates 40 attached to a cylindrical hub 42 disposed within the fluid chamber 36.
- the vanes 40 and hub 42 may be formed to define a "pinwheel" structure of vane-hub that is capable of rotating freely (relative to fluid chamber 36 and body 38 of modulator 30) upon the injection of medium into the fluid chamber 36 through the injection port 32.
- the hub 42 may be designed to preferentially rotate in one direction.
- FIG. I B illustrates the preferential flow of fluid and rotation of the vane-hub, in a clockwise direction, via flow arrows 44. From the fluid chamber 36, injection fluid may flow out of the modulator 30 via the outlet port 34.
- vane-hub modulator 30 depicted in FIG. I B it may be easy to measure, or otherwise identify, the total volume of injection fluid delivered through the modulating device 30 (over time) since the volume of fluid passing through the device 30 during one rotation of the vane 40 or hub 42 may be easily determined, and the number of rotations simply counted by a counting mechanism. Alternatively, each "cell" of fluid between adjacent vanes 40 may be readily counted by a counting mechanism.
- the counting mechanism may include a magnetic, mechanical, ultrasonic, infrared or similar measurement device capable of identifying the number of times a vane 40 and/or some other element of the device 30 has passed within its field of measurement, or by determining the number of times the axis of the hub 42 has rotated.
- the output of such a counting mechanism may be utilized to determine and display (in real time) the total volume of medium used during a procedure.
- an operator or physician may readily see the amount of medium used (as determined by the counting mechanism and presented by a suitable display or indicative output).
- the determination of the volume (via calculations or conversions based on, for example, counted rotations) may be performed as part of the counting device, or may be performed by a display device.
- a display device In addition to providing volume
- the counting mechanism, signal, or display may incorporate various algorithms to alert the operator before or when maximum volume of agent has been administered (based upon an operator-determined value, Maximum Acceptable Contrast Dose, Gurm ratio, etc.).
- Maximum Acceptable Contrast Dose index as described by Cigarroa, et al. (June 1989) "Dosing of Contrast Material to Prevent Nephropathy in Patients with Renal Disease” Am Jour of Med. 649-652, suggests that a maximum amount of contrast injected (in mL) be equal to 5ml x body weight ( g)/Baseline Serum Creatinine level (in mg/dL).
- the maximum amount of contrast injected (in mL) as described in Gurm, et al. "Renal Function-Based Dosing to Define Safe Limits of Radiographic Contrast Media in Patients Undergoing Percutaneous Coronary
- the system may include a display that not only provides total volume used, but also warns the operator of use as compared to one or more indicators of a maximum administration.
- the vane-hub modulator 30 may include two components.
- the body 38 (described above) may be situated adjacent a controller/actuator 46 and may include the input port 32, the output port 34 and the fluid chamber 36 with rotating vane 40 and hub 42.
- the body 38 may come into contact with bodily fluids and, accordingly, may be disposable.
- the controller/actuator 46 may also include a brake mechanism 48, sensor signal, receiver 50, and the like may be used to clutch, brake, or otherwise inhibit the rotation of the hub 42 so as to provide resistance to rotation.
- the resistance induced to the rotation may be coordinated with a signal from sensor 12 of FIG. 1 A, so as to modulate an injection from an injector to improve an agent fluid flow.
- FIG. 1 C illustrates one such mechanism 48 for braking a shaft 52 of the hub 42, using electromagnetic force.
- the exemplary braking structure 48 is further detailed in FIG. I D, wherein the longitudinal shaft 52 of the hub 42 is coupled to a hysteresis plate or disc 54 positioned within a magnetic coil 56. When electricity is applied to the magnetic coil 56, a magnetic flux is transferred to the hysteresis disc 54 (as it passes through the field) causing a magnetic "drag" on the disc 54.
- the drag, or braking, applied to the hysteresis disc 54 may be increased or decreased with increasing or decreasing voltage applied to the magnetic field to modulate the flow of medium as intended.
- the connected disc 54 may rotate freely about an axis of shaft 52.
- braking mechanism 48 of FIG. I D may increase the drag (reduce the flow rate) of the agent as needed to improve the flow profile of the agent or fluid.
- FIGS. 1 A-AD describe one system to regulate the flow profile and determine the volume of injection agent through a modulator, and as such, are intended to illustrate the modulation monitoring, control, and measurement concepts disclosed herein without limitation. Therefore, this embodiment is but one example how one might use a modulator device and a measurement device to control the delivery of an agent, as well as measure the amount of agent delivered.
- FIGS. 2 and 3 depict a perspective view and a perspective exploded view, respectively, of a monitoring syringe 100.
- the monitoring syringe 100 includes a syringe housing 102 (or chamber) defining an inner bore 104.
- a plunger 106 including a shaft 108 and a piston 1 10 is slidably received in the bore 104. More specifically, the piston 1 10 is slidably engaged with an interior surface of the bore 104 and linear movement M of the shaft 108 within the bore 104 moves the piston 1 10. Movement M is along the syringe axis As.
- the plunger 106 is moved back and forth within the bore 104 by the movement of a thumb pad, such as a thumb-ring 1 12, as described in more detail below.
- the plunger 106 As the plunger 106 is moved M in a direction towards the discharge end 1 14 of the syringe housing 102, the fluid contained therein is discharged into a tube or needle (not shown) and delivered to a patient.
- a cylindrical-type chamber 102 and inner bore 104 are described; however, it is contemplated that there may be a variety of constructions of a housing/bore 102/104 and plunger 106 that provide the function as anticipated herein and the shape (including rectangular, ovular, triangular cross-section, etc.), in and of itself, should not be limiting.
- a light sensor module 1 18 is secured to an exterior surface of the syringe housing 102.
- the light sensor module 1 18 includes a light sensor housing 1 19 that encloses a light sensor 120.
- the light sensor 120 may be a linear array comprising a plurality of pixels, such as model no. TSL1406R manufactured by AMS-TAOS USA, Inc., of Piano, Texas.
- the light sensor 120 may be one or more discrete light sensors, such as photoresistors. In general, a greater number of discrete light sensor elements (pixels, photoresistors, or otherwise), may improve accuracy.
- One or more leads or wires 124 extend from an end of the light sensor module 1 18, as required or desired for a particular application.
- wires 124 need not be utilized with different sensor configurations.
- a cable 126 connects at an end 128 to an interface unit that analyzes the output of the light sensor module 1 18 and provides this information to a user of the monitoring syringe 100, typically on a display.
- communication may be via a radio, Bluetooth, of other wireless connection.
- the displayed information may include volume of the chamber, volume remaining, volume dispensed, fluid type, flow rate, fluid pressure or temperature and/or other information, as required or desired for a particular application.
- the shaft 108 of the plunger 106 is substantially translucent, meaning light may generally pass through the shaft 108.
- a discrete portion or band 130 may be disposed on or formed with the shaft 108.
- the band 130 in this case, is a portion of the shaft 108 having a translucency less than the translucency of the remainder of shaft 108, or an opacity greater than the opacity of the remainder of the shaft.
- the band 130 of lesser transparency passes in front of the light sensor 120 of the light sensor element 1 18. Light passes through the plunger portion having higher translucency and is received by the light sensor module 1 18.
- the light sensor module 1 18 sends a signal to the interface unit that determines the position of the plunger 106 within the syringe housing 102, based on the opacity of band 130 along the light sensor 120. Thus, the position of the plunger 106 can be determined.
- the interface may also determine the various types of information listed above, based on a known diameter and length of the bore 104 of the syringe housing 102. Two finger rings or tabs 132 receive the fingers of a user during use. A stop 134 prevents the plunger 106 from being pulled out of the syringe housing 102.
- FIGS. 4A-4C depict various alternative configurations of plungers that may be utilized with various monitoring syringes herein.
- FIG. 4A depicts a partial enlarged perspective view of another embodiment of a monitoring syringe 200.
- a plunger 206 includes a shaft 208.
- the depicted embodiment includes a gradation 230 of varying
- the gradation 230 is darker (i.e., less translucent or more opaque) proximate the piston 210. Proximate the stop 234, the translucency of the gradation 230 is higher (and conversely, the opacity lower).
- the transition of the gradation may be smooth or in discrete bands. In certain embodiments such as the one depicted in FIG. 4A, no shading may be present proximate the stop 234 and the translucency of that portion may be the same as that of the shaft 208, generally.
- FIG. 4B depicts a partial enlarged perspective view of another embodiment of a monitoring syringe 300.
- a plunger 306 includes a shaft 308.
- the depicted embodiment utilizes a shaft 308 having a discrete band 330 of higher translucency. That is, the portion of the shaft 330 disposed between the piston 310 and stop 334 is substantially opaque, while the band 330 is substantially translucent.
- FIG. 4C depicts a partial enlarged perspective view of another embodiment of a monitoring syringe 400.
- a plunger 406 includes a shaft 408.
- the gradation 430 is disposed opposite the gradation of the embodiment of FIG. 4A.
- the gradation 430 is darker (i.e., less translucent or more opaque) proximate the stop 434.
- Proximate the piston 410 the translucency of the gradation 430 is higher.
- the transition of the gradation 430 may be smooth or in discrete bands. In certain embodiments, no shading may be present proximate the piston 410 and the translucency of that portion may be the same as that of the shaft 408, generally.
- any of the configurations of the plungers depicted in FIGS. 2, 3, or 4A-4C may be utilized with the monitoring syringes depicted herein. That is, plungers having discrete bands of opacity or translucency, or plungers having increasing or decreasing gradations (measured from the piston to the stop) may be utilized with syringes utilizing light sensor modules. Regardless of plunger opacity/translucency configuration, the light sensor modules detect changes of light being received as the monitoring syringe is used. Depending on the location of one or more light sensors within the light sensor module, the changes enable an interface device to determine the position of the plunger and, accordingly, the volume and other characteristics or conditions of the device.
- the various embodiments of measuring syringes of FIGS. 2- 4C describe devices that generally include a light sensor module and/or light sensor positioned on, in, or proximate the device housing or bore.
- the portion of the device including the variation of translucency is principally positioned on, in, or proximate the device plunger.
- the configuration of the components can be reversed if desired, such that the housing/bore includes variations in translucency, while the plunger includes a light sensor or light sensor module.
- FIGS. 5A-5C depict various embodiments of monitoring syringes.
- FIG. 5A depicts a monitoring syringe 600 utilizing a sensor module 618.
- the sensor module 618 includes a sensor housing 619 and a linear array 620.
- the linear array 620 includes a plurality of pixels 620a.
- the monitoring syringe 600 includes a plunger 606 having a shaft 608 including a translucent band 630.
- the band 630 need not be completely translucent, but merely sufficiently translucent such that the pixels 620a within the light array 620 may detect a change in light received.
- the received light is ambient light 640 that may be present in a room such as a surgical suite.
- light source 640 may be from a source other than ambient light, such as an infrared or ultraviolet light generator, for example.
- the light sensor module 618 may be configured with filters to receive light of only a predetermined wavelength (e.g., infrared, ultraviolet, etc.).
- the plunger 606 or shaft 608 may be configured with a filter to filter the received light to the desired wavelength.
- FIG. 5B depicts a monitoring syringe 700 utilizing a sensor module 718.
- the sensor module includes a sensor housing 719 and a light sensor 720 that includes discrete light sensor elements 720a, such as for example, photoresistors.
- the monitoring syringe 700 includes a plunger 706 having a shaft 708 including a gradation 730, wherein the gradation 730 is less translucent proximate the piston 710 and more translucent proximate the stop 734.
- the monitoring syringe of FIG. 5B utilizes a light emitter module 750, such as, for example, light emitting diodes (LEDs).
- LEDs light emitting diodes
- the light emitter module 750 is secured to the syringe housing 702 in a manner similar to the light sensor module 718.
- the light emitter module 750 includes an emitter housing 752 and a light emitter 740 including a plurality of light emitter elements 740a.
- the discrete light emitter elements 740a may be disposed opposite and aligned with the discrete light sensor elements 720a, but this is not required.
- the light emitter elements 740a may be configured to only emit light having a particular wavelength, or the light may be filtered so as to restrict the light that is emitted and/or sensed.
- the light sensor module 718 sends signals to an interface, which processes the signals to determine the position of piston 710.
- the light sensor module 718 and light emitter module 750 are disposed approximately 180 degrees from each other about the circumference of the syringe housing 702. In other embodiments, the modules 718, 750 may be disposed less than about 180 degrees from each other. In certain embodiments,
- the modules 718, 750 may be disposed about 90 degrees from each other. If desired, the modules 718, 750 may be contained in a common housing.
- FIG. 5C depicts a monitoring sensor 800 utilizing a sensor module 818.
- the sensor module includes a sensor housing 819 and a light sensor 820 that includes discrete light sensor elements 820a, such as photoresistors.
- the monitoring syringe 800 includes a plunger 806 having a shaft 808 including a gradation 830, wherein the gradation 830 is less translucent proximate the piston 810 and more translucent proximate the stop 834.
- the monitoring syringe 800 utilizes a light emitter module 850.
- the light emitter module 850 is secured to the syringe housing 802 in a manner similar to the light sensor module 818.
- the light emitter module 850 includes an emitter housing 852 and a light emitter 840 including a plurality of light emitter elements 840a.
- the emitter housing 852 and sensor housing 819 may include a structural element (e.g., tape or adhesive) to facilitate fixation of emitters/sensors to the chamber, or may include emitters/sensors being disposed within the chamber wall.
- the discrete light emitters 840a are disposed opposite and aligned with the discrete light sensor elements 820a, but this is not required.
- the light emitter elements 840a may be configured to only emit light having a particular wavelength (for example, near infrared light generator), or may be filtered.
- the gradation 830 passes between the light emitter module 818 and the light sensor module 850, light signals are received by the discrete light sensor elements 820a.
- the light sensor module 818 sends signals to an interface, which processes the signals to determine the position of piston 810.
- the light sensor module 818 and light emitter module 850 are disposed approximately 180 degrees from each other about the circumference of the syringe housing 802. In other embodiments, the modules 818, 850 may be disposed as described above with regard to FIG. 5B.
- the monitoring syringe 800 of FIG. 5C utilizes a light sensor module 818 and light emitter module 850 having higher sensor and emitter densities than those of FIGS. 5A and 5B. As described above, this may result in greater positional accuracy.
- FIG. 6 depicts another embodiment of a monitoring syringe 900.
- the light sensor housing 919 containing the light sensor 920 and wires 924, is detachably secured to the syringe housing 902.
- the light sensor housing 919 may be secured with clips, C-clamps, resilient catches, or other elements 960 that allow the light sensor housing 919 to be removed from the syringe housing 902.
- Such a configuration may be desirable so the light sensor housing 919 and related components may be reused on a different syringe, typically after a medical procedure.
- the light sensor housing 919 may be removed from a first syringe housing 902 and reattached to a second syringe housing at a later time.
- a calibration program may be executed so as to calibrate the light sensor module 918 for the new syringe.
- the embodiments described herein may include various elements or components to measure and/or detect a displacement of a plunger within a chamber, such as a syringe. And, with the detection of a positional relationship of a plunger within a chamber, a user may explicitly or implicitly determine a volume of media that may have been ejected from ⁇ chamber. Some of the embodiments described may include various sources in the generation of light, as well as components to detect or sense the light, depending on the positional relationship of the plunger/piston and the chamber. Other alternative embodiments capable of identifying positional relationships of a plunger and chamber (and changes thereof) may include, without limitation, the following technologies.
- a hall sensor (coiled wire along syringe axis) may be placed on, or in proximity to, the chamber with a magnet attached to the plunger (so as to act as a variable proximity sensor). Multiple low sensitivity hall sensors may be disposed along the chamber of the syringe with a magnet attached to the plunger. Laser light may be emitted and detected to determine a positional relationship of the plunger along the chamber axis. An absolute encoder may be used to "read" the direct displacement of the plunger.
- FIG. 7 depicts a method 1000 of using a monitoring syringe utilizing light signals.
- a signal is received from a light sensor, the position of which on a monitoring syringe is known. Other characteristics of the light sensor, such as receptive wavelength, may be known.
- a position of a piston is then determined in operation 1004.
- a light signal is emitted from the first emitter in operation 1006.
- a light signal may be received at a second light sensor having known characteristics (e.g., position) in operation 1008.
- An updated position may then be determined based on the characteristic of the second light sensor and the signal in operation 1010.
- a condition of the syringe (such as those described herein) may be determined, as in operation 1012.
- FIG. 8 illustrates one example of a suitable operating environment 1 100 in which one or more of the present embodiments may be implemented.
- This is only one example of a suitable operating environment and is not intended to suggest any limitation as to the scope of use or functionality.
- Other well-known computing systems, environments, and/or configurations that may be suitable for use include, but are not limited to, personal computers, server computers, hand-held or laptop devices, multiprocessor systems, microprocessor-based systems, programmable consumer electronics such as smart phones, network PCs, minicomputers, mainframe computers, smartphones, tablets, distributed computing environments that include any of the above systems or devices, and the like.
- operating environment 1 100 typically includes at least one processing unit 1 102 and memory 1 104.
- memory 1 104 may be volatile (such as RAM), nonvolatile (such as ROM, flash memory, etc.), or some combination of the two. This most basic configuration is illustrated in FIG. 8 by dashed line 1 106. Further, environment 1 100 may also include storage devices
- environment 1 100 may also have input device(s) 1 1 14 such as touch screens, keyboard, mouse, pen, voice input, etc. and/or output device(s) 1 1 16 such as a display, speakers, printer, etc.
- input device(s) 1 1 14 such as touch screens, keyboard, mouse, pen, voice input, etc.
- output device(s) 1 1 16 such as a display, speakers, printer, etc.
- Operating environment 1 100 typically includes at least some form of computer readable media.
- Computer readable media can be any available media that can be accessed by processing unit 1 102 or other devices comprising the operating environment.
- Computer readable media may comprise computer storage media and communication media.
- Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data.
- Computer storage media includes, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, solid state storage, or any other tangible medium which can be used to store the desired information.
- Communication media embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.
- modulated data signal means a signal that has one or more of its characteristics set or changed in such a manner as to encode information in the signal.
- communication media includes wired media such as a wired network or direct-wired connection, and wireless media such as acoustic, RF, infrared and other wireless media. Combinations of the any of the above should also be included within the scope of computer readable media.
- the operating environment 1 100 may be a single computer operating in a networked environment using logical connections to one or more remote computers.
- the remote computer may be a personal computer, a server, a router, a network PC, a peer device or other common network node, and typically includes many or all of the elements described above as well as others not so mentioned.
- the logical connections may include any method supported by available communications media.
- Such networking environments are commonplace in offices, enterprise-wide computer networks, intranets and the Internet.
- the components described herein comprise such modules or instructions executable by computer system 1 100 that may be stored on computer storage medium and other tangible mediums and transmitted in communication media.
- Computer storage media includes volatile and non-volatile, removable and nonremovable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules, or other data. Combinations of any of the above should also be included within the scope of readable media.
- computer system 1 100 is part of a network that stores data in remote storage media for use by the computer system 1 100.
- the monitoring systems described herein may be utilized to deliver any types of fluids to a patient during a medical procedure.
- fluids may include medium (media), agents, substances, materials, medicaments, and the like.
- medium media
- agents substances, materials, medicaments, and the like.
- these terms are used generically herein to describe a variety of fluidal materials that may include, at least in part, a substance used in the performance of a diagnostic, therapeutic or/and prophylactic medical procedure and such use is not intended to be limiting.
- the medium delivery modulation and/or measurement devices and methods described herein are not limited to the particular, representative embodiments as described, since variations may be made to these embodiments without departing from the scope and spirit of the disclosure.
- the materials utilized in the manufacture of the monitoring syringe may be those typical in medical applications. Plastics such as polycarbonate may be utilized for the syringe housing and plunger.
- the band or gradation may be printed directly on the plunger shaft, or may be printed on a discrete plastic sheet or sheath that may then be affixed to the plunger shaft.
- Various types of printing may be utilized to change the translucency or opacity of the band or gradation.
- the type of printing may be based on the type of light to be received by the sensors. For example, carbon-based printing may be utilized for sensors that detect infrared light.
- the band or gradation may be utilized as the filter described above.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2017501097A JP7040937B2 (en) | 2014-03-21 | 2015-03-18 | Injection device with optical system for monitoring the position of the piston rod |
EP15714346.2A EP3119465A1 (en) | 2014-03-21 | 2015-03-18 | Syringe with optical system for monitoring the position of the plunger rod |
AU2015231365A AU2015231365B2 (en) | 2014-03-21 | 2015-03-18 | Syringe with optical system for monitoring the position of the plunger rod |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US14/222,331 US9999718B2 (en) | 2012-08-28 | 2014-03-21 | Volume monitoring device utilizing light-based systems |
US14/222,331 | 2014-03-21 |
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WO2015143058A1 true WO2015143058A1 (en) | 2015-09-24 |
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PCT/US2015/021294 WO2015143058A1 (en) | 2014-03-21 | 2015-03-18 | Syringe with optical system for monitoring the position of the plunger rod |
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EP (1) | EP3119465A1 (en) |
JP (1) | JP7040937B2 (en) |
AU (1) | AU2015231365B2 (en) |
WO (1) | WO2015143058A1 (en) |
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WO2019076757A1 (en) * | 2017-10-18 | 2019-04-25 | Robert Bosch Gmbh | Adhesive label for a container |
WO2019077098A1 (en) * | 2017-10-19 | 2019-04-25 | Sanofi | A medicament delivery device |
CN109843360A (en) * | 2016-08-17 | 2019-06-04 | 尼莎·沙惠尼 | Inject monitoring device and system |
CN110035785A (en) * | 2016-12-15 | 2019-07-19 | 伊莱利利公司 | Drug delivery device with sensing system |
US20210089838A1 (en) * | 2016-06-03 | 2021-03-25 | Becton Dickinson Rowa Germany Gmbh | Method for providing a singling device of a storage and dispensing container |
US20220008658A1 (en) * | 2016-07-15 | 2022-01-13 | Bigfoot Biomedical, Inc. | Dose measurement systems and methods |
CN115813767A (en) * | 2023-02-04 | 2023-03-21 | 潍坊医学院附属医院 | Supplementary medicine feeding device |
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JP7418333B2 (en) * | 2017-12-28 | 2024-01-19 | サノフイ | Dose measurement system |
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- 2015-03-18 AU AU2015231365A patent/AU2015231365B2/en not_active Ceased
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US11903906B2 (en) * | 2016-06-03 | 2024-02-20 | Becton Dickinson Rowa Germany Gmbh | Method for providing a singling device of a storage and dispensing container |
US20210089838A1 (en) * | 2016-06-03 | 2021-03-25 | Becton Dickinson Rowa Germany Gmbh | Method for providing a singling device of a storage and dispensing container |
US20220008658A1 (en) * | 2016-07-15 | 2022-01-13 | Bigfoot Biomedical, Inc. | Dose measurement systems and methods |
US11690959B2 (en) * | 2016-07-15 | 2023-07-04 | Bigfoot Biomedical, Inc. | Dose measurement systems and methods |
CN109843360A (en) * | 2016-08-17 | 2019-06-04 | 尼莎·沙惠尼 | Inject monitoring device and system |
US11752274B2 (en) | 2016-08-17 | 2023-09-12 | Sawhney Nisha | Injection monitoring device and system |
CN110035785B (en) * | 2016-12-15 | 2021-12-24 | 伊莱利利公司 | Drug delivery device with sensing system |
CN110035785A (en) * | 2016-12-15 | 2019-07-19 | 伊莱利利公司 | Drug delivery device with sensing system |
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US11524121B2 (en) | 2017-10-19 | 2022-12-13 | Sanofi | Medicament delivery device |
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WO2019077098A1 (en) * | 2017-10-19 | 2019-04-25 | Sanofi | A medicament delivery device |
CN115813767A (en) * | 2023-02-04 | 2023-03-21 | 潍坊医学院附属医院 | Supplementary medicine feeding device |
Also Published As
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JP7040937B2 (en) | 2022-03-23 |
AU2015231365A1 (en) | 2016-10-06 |
EP3119465A1 (en) | 2017-01-25 |
JP2017508596A (en) | 2017-03-30 |
AU2015231365B2 (en) | 2019-12-05 |
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