WO2017115867A1 - 投与装置の設計システム、投与システム、投与装置の設計方法、投与装置の設計プログラム、及び医療装置の設計システム - Google Patents
投与装置の設計システム、投与システム、投与装置の設計方法、投与装置の設計プログラム、及び医療装置の設計システム Download PDFInfo
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- WO2017115867A1 WO2017115867A1 PCT/JP2016/089188 JP2016089188W WO2017115867A1 WO 2017115867 A1 WO2017115867 A1 WO 2017115867A1 JP 2016089188 W JP2016089188 W JP 2016089188W WO 2017115867 A1 WO2017115867 A1 WO 2017115867A1
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- 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
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M5/2046—Media being expelled from injector by gas generation, e.g. explosive charge
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- 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
- A61M5/30—Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules
-
- 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
- A61M5/3129—Syringe barrels
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H20/00—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance
- G16H20/10—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance relating to drugs or medications, e.g. for ensuring correct administration to patients
- G16H20/17—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance relating to drugs or medications, e.g. for ensuring correct administration to patients delivered via infusion or injection
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H40/00—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices
- G16H40/60—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices
- G16H40/63—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for local operation
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- 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
- A61M5/3129—Syringe barrels
- A61M2005/3132—Syringe barrels having flow passages for injection agents at the distal end of the barrel to bypass a sealing stopper after its displacement to this end due to internal pressure increase
-
- 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
- A61M5/46—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 having means for controlling depth of insertion
Definitions
- the present invention relates to a system for calculating design specifications of an administration device that administers an administration target substance such as a drug solution to a target region using a high energy substance as a power source.
- a syringe can be exemplified as a device for administering a drug solution to a target region such as a living body, but in recent years, a needleless syringe without an injection needle has been developed from the viewpoint of ease of handling and hygiene.
- a drug solution pressurized by a driving source such as a compressed gas or a spring is ejected toward a target region, and the drug solution is administered into the target region using the kinetic energy of the drug solution.
- a driving source such as a compressed gas or a spring
- a needleless syringe does not have a mechanical configuration (for example, an injection needle) that directly contacts the inside of the target region, convenience for the user is high.
- a mechanical configuration for example, an injection needle
- Patent Document 1 discloses a technique in which a drug solution is sent to a desired depth of a skin structure of a living body by a needleless syringe. Specifically, with regard to pressurization for injection of an injection solution, in order to form a penetration path in the injection target region, after increasing the pressure to the first peak pressure, the pressure on the injection solution is increased to a standby pressure. First pressurization mode to lower and pressurize the injection solution at the standby pressure, increase the pressure to the injection solution to the second peak pressure, and perform the second addition to inject a predetermined injection amount Pressure control for performing the pressure mode is performed. By performing such pressurization control, the behavior of the injection solution in the target region is controlled.
- the technique disclosed in Patent Document 1 described above a suitable injection solution is injected by controlling the pressure applied to the injection solution by explosive combustion in two pressurization modes.
- the technique since the conditions regarding the amount of injection solution to be injected and the distribution and diffusion of the injection solution in the target region are not always constant, the technique alone cannot always deliver the injection solution to a desired site.
- the administration device includes not only a syringe including a needleless syringe but also various devices such as a catheter, and the form of administration of a substance to a target region differs depending on each device. Therefore, the technique disclosed in Patent Document 1 is not always suitably applicable to an administration device other than a needleless syringe.
- the present invention relates to a configuration of an administration device that includes energy information related to a high energy substance in an administration device that administers an administration target substance to a target region using a high energy substance as a driving source.
- An object of the present invention is to provide a technique for calculating design specification information to improve convenience of the administration device.
- the present invention is based on information related to a substance to be administered, information related to a target region, and information related to a distribution of a target substance to be administered assumed in the target region.
- a configuration for calculating design specification information related to the configuration of the administration device was adopted.
- the user can easily obtain the specifications of the high energy substance as the drive source used in the administration apparatus and the specifications regarding the configuration of the administration apparatus related to the administration of the administration target substance.
- the convenience is improved suitably.
- the present invention is a system for calculating a design specification of an administration device that administers an administration target substance to a target region using a high-energy substance as a power source, and the administration device for which the design specification is calculated
- a device specifying unit for specifying a target administration device a first acquisition unit for acquiring substance information related to a predetermined administration target substance to be administered in the target administration device, and a predetermined administration for the predetermined administration target substance
- a second acquisition unit that acquires region information related to the target region, and formation of the predetermined target region when the predetermined administration target substance is administered by the target administration device.
- a third acquisition unit that acquires distribution information related to the distribution state of the administration target substance, the substance information acquired by the first acquisition unit, and the region information acquired by the second acquisition unit And, related to the configuration of the target administration device, including energy information related to the high-energy substance used for administration of the predetermined administration target substance based on the distribution information acquired by the third acquisition unit And a calculation unit that calculates design specification information to be performed.
- the calculation unit calculates design specification information related to the configuration of the administration device necessary for administering the administration target substance to the target region using the high energy substance as a power source in the administration device.
- a high energy substance is a substance containing explosives and explosives.
- substance information, region information, and distribution information are used. These pieces of information are information related to a desired operation desired to be realized when the user drives the administration device using the high energy substance as a drive source. That is, the substance information is information related to a predetermined administration target substance that the user desires to administer, and for example, the dosage of the substance can be exemplified.
- the region information is information related to a target region to which the administration target substance is administered.
- the substance when the substance is administered to a living body, which organ of the living body is administered, examples include hardness (difficulty of administration target substance) and personal physical information (age, weight, race, etc.) of the living body when the target region is a living body.
- the design specification information includes at least energy information related to the high energy substance as the driving source, and further information related to the configuration of the administration device related to administration of the administration target substance, for example, the high energy substance in the administration device.
- Information on the structure and size of the combustion space (chamber), information on the structure and size of the structure (for example, piston) for transmitting the energy generated by the combustion of the high-energy substance to the administration target substance, administration Information regarding the structure and size of a structure (for example, a nozzle or the like) for administering the target substance to the target region may be included.
- examples of the high-energy substance include explosives containing zirconium and potassium perchlorate, explosives containing titanium hydride and potassium perchlorate, Gunpowder containing titanium and potassium perchlorate, powder containing aluminum and potassium perchlorate, powder containing aluminum and bismuth oxide, powder containing aluminum and molybdenum oxide, powder containing aluminum and copper oxide, powder containing aluminum and iron oxide It may be any one of the explosives or explosives composed of a plurality of combinations thereof.
- These high-energy substances are characterized by the fact that the combustion products are gaseous at high temperatures, but do not contain gaseous components at room temperature.
- Information on the type of high-energy substance that can be used in such an administration device, its loading amount, etc., that is, information on a high-energy substance for realizing a function as a power source in the administration device is the energy information and And included in the design specification information of the dosing device.
- the design specification information of the target administration device identified by the device identification unit that is, the administration device that the user desires to use is calculated based on the substance information, the region information, and the distribution information by the calculation unit.
- the user can easily construct and use the administration device according to a predetermined purpose.
- the administration device may use the high energy substance as a power source and the target substance as a target without using an introduction section for introducing the target substance into the target region. It may be a device for injecting the administration target substance into the target region by ejecting toward the region and penetrating the surface layer of the target region. In such an administration device, it is particularly difficult to administer the administration target substance into the target region as desired by the user.
- the administration device by calculating the design specification information, the administration device can be easily operated as desired, and the convenience for the user is greatly improved.
- the administration device design system described above may further include a target area sensor that detects a predetermined physical parameter related to the hardness of the surface layer of the predetermined target area.
- the acquisition unit may acquire the predetermined physical parameter detected by the target area sensor as at least part of the area information.
- a calculation map corresponding to each of a plurality of types of the administration devices, the substance information, the region information, the distribution information, and the distribution information in each of the administration devices You may further provide the map information holding
- the calculation unit calculates the design specification information based on a calculation map corresponding to the target administration device specified by the device specifying unit among the calculation maps held by the map information holding unit.
- the model information holding unit prepares a calculation map related to design specification information corresponding to each administration device, so that design specification information corresponding to each administration device can be appropriately calculated.
- an administration system including the administration device design system described above, wherein the administration device administers the administration target substance to the target region using the high energy substance as a power source without using an introduction unit, and
- the energy information included in the design specification information calculated by the calculation unit a preparation device that prepares a high-energy substance of a type and a loading amount corresponding to the target administration device, and an administration system including the administration system are also protected by the present invention. It belongs to the range.
- the energy information included in the design specification information calculated by the design system is used, and the type and loading suitable for the administration information corresponding to the administration device that administers the administration target substance without going through the introduction member. A quantity of high energy material will be prepared. As a result, the preparation of the administration device can be achieved very easily.
- the present invention can be understood from the aspect of a method for calculating the design specification of an administration device that administers an administration target substance to a target region using a high energy substance as a power source. That is, the present invention acquires a device specifying step for specifying the administration device for which the design specification is to be calculated as a target administration device, and material information related to a predetermined administration target substance administered in the target administration device.
- the region information acquired in the second acquisition step and the distribution information acquired in the third acquisition step Including energy information related to the high energy substance used in the given, including a calculation step of calculating a design specification information related to the configuration of the subject dispenser, a design method of administration device.
- the present invention can be grasped from the aspect of a program for causing a processing device to calculate the design specifications of an administration device that administers an administration target substance to a target region using a high energy substance as a power source. That is, the present invention relates to a device specifying step for specifying, as a target administration device, the administration device for which the design specifications are calculated, and a predetermined administration target substance administered in the target administration device.
- a calculation program for calculating design specification information related to the configuration of the target administration device including energy information related to the high-energy substance used for administration of the administration target substance, is there. It should be noted that the technical idea disclosed in relation to the administration system design system is applicable to the present invention as long as no technical flaw occurs.
- the present invention described above relates to a design system and the like of the administration device, but the category includes a system in which a more specific usage form of the administration device is considered.
- an education support system for educating the use of the administration device by the user at the site where the administration device is used can be exemplified. It is difficult for the user to properly use the administration device particularly in the initial stage of use. Therefore, it can be said that the usage form as the user's education support system is a form in which the technical idea of the present invention is significantly utilized.
- the devised invention is a system that calculates a design specification of a medical device that performs a predetermined medical operation on a target region using a high-energy substance as a power source, and is a target for calculating the design specification.
- a device specifying unit for specifying a medical device as a target medical device; a first acquisition unit for acquiring operation information related to the predetermined medical operation performed in the target medical device; and a predetermined for performing the predetermined medical operation
- a second acquisition unit that acquires area information related to the target area; and a change in the predetermined target area that is assumed in the predetermined target area when the predetermined medical operation is performed by the target medical device.
- a third acquisition unit that acquires related change information, the motion information acquired by the first acquisition unit, the region information acquired by the second acquisition unit, and the third acquisition unit.
- a calculation unit that calculates design specification information related to the configuration of the target medical device, including energy information related to the high-energy substance used in the predetermined medical operation based on the change information acquired And comprising.
- the operation information, region information, and change information in the system for calculating the design specifications of the medical device correspond to the substance information, region information, and distribution information in the administration device design system described above. Therefore, according to the above disclosure, a person skilled in the art can naturally derive the medical device design system. Similarly, a medical device design method and a medical device design program can be derived by those skilled in the art according to the above disclosure.
- the design specification information related to the configuration of the administration apparatus including energy information related to the high energy substance, is calculated, and the convenience of the administration apparatus It is possible to improve the performance.
- FIG. 1 It is a figure which shows schematic structure of the design system of the administration apparatus based on this invention. It is a functional block diagram of the design system shown in FIG. It is a flowchart of the design specification information calculation process performed with the design system shown in FIG. It is a figure which shows the other aspect of the design system of an administration apparatus based on this invention.
- the administration device is a needleless administration device that injects an administration liquid into a target region by using combustion energy of a high-energy substance including explosives and explosives (hereinafter sometimes simply referred to as “explosive”). That is, the administration device is a device that administers the administration liquid to the target region without passing the device side and the target region through the introduction part which is a physical structure.
- the administration device 1 will be described.
- the administration device 1 is a device that administers the administration liquid to the target area as described below, and the administration operation of the administration liquid corresponds to the administration operation of the administration device. Therefore, the administration liquid corresponds to the administration target substance according to this embodiment.
- the structure of the following embodiment is an illustration and this embodiment is not limited to the structure of this embodiment.
- “distal side” and “proximal end side” are used as terms representing the relative positional relationship in the longitudinal direction of the administration device 1.
- the “distal side” represents a position near the distal end of the administration device 1, which will be described later, that is, a position near the injection port 31a, and the “proximal end” is the side opposite to the “distal side” in the longitudinal direction of the administration device 1.
- the direction, that is, the direction on the drive unit 7 side is shown.
- FIG. 1 is a diagram showing a schematic configuration of the administration device 1, and is also a cross-sectional view of the administration device 1 along its longitudinal direction.
- the administration device 1 includes a subassembly including a later-described syringe unit 3 and a plunger 4 (see FIG. 2A described later) 10A, an administration device body 6, a piston 5, and a drive unit 7.
- the device assembly 10 is integrally assembled with a three-dimensional body (see FIG. 2B described later) 10B.
- the administration liquid administered to the target region by the administration device 1 is formed by containing a predetermined substance that exhibits the efficacy and function expected in the target region in a liquid medium. Has been.
- the predetermined substance may be dissolved in the liquid as a medium, or may be simply mixed without being dissolved.
- Examples of the predetermined substance contained in the administration liquid include a biological substance that can be administered in a target region that is a living body and a substance that emits a desired physiological activity.
- Examples of the biological substance include DNA, RNA, nucleic acids, and antibodies.
- Examples of substances that exhibit physiological activity include low molecular weight drugs, inorganic substances such as metal particles for thermotherapy and radiotherapy, substances having various pharmacological / therapeutic effects including carriers that serve as carriers, etc. Is mentioned.
- the liquid that is a medium of the administration liquid may be any substance that is suitable for administering these predetermined substances into the target region, and may be aqueous or oily.
- the viscosity of the liquid as a medium is not particularly limited.
- the target region that is the subject of administration of the administration liquid is a region to which the predetermined substance is to be administered, such as a living cell or tissue (skin etc.), an organ organ (eyeball, heart, liver etc.), etc. It can be illustrated.
- the structure of the living body as the target region in a state of being separated from the living body.
- the administration of the predetermined substance to the target region (tissue or organ) ex-vivo and the administration of the predetermined substance to the target region (cultured cell or cultured tissue) in-vitro are also performed by the administration device according to this embodiment. Included in the category.
- the device assembly 10 is configured to be detachable from the housing 2.
- the filling chamber 32 (see FIG. 2A) formed between the syringe part 3 and the plunger 4 included in the device assembly 10 is filled with the dosing liquid, and the device assembly 10 ejects the dosing liquid. It is a unit that is exchanged every time.
- a battery 9 that supplies power to an igniter 71 included in the drive unit 7 of the device assembly 10 is included on the housing 2 side. The power supply from the battery 9 is performed by the user pressing the button 8 provided on the housing 2, so that the electrode on the housing 2 side and the electrode on the drive unit 7 side of the device assembly 10 are connected via wiring. Will be done between.
- the electrode on the housing 2 side and the electrode on the drive unit 7 side of the device assembly 10 are designed such that the shape and position of both electrodes are automatically contacted when the device assembly 10 is attached to the housing 2.
- the housing 2 is a unit that can be used repeatedly as long as the electric power that can be supplied to the drive unit 7 remains in the battery 9. In the housing 2, when the battery 9 has run out of power, only the battery 9 may be replaced and the housing 2 may continue to be used.
- the syringe part 3 has a nozzle part 31 including a filling chamber 32 which is a space capable of containing a liquid to be administered, and a plunger 4 is arranged so as to be slidable in the filling chamber 32 in the subassembly 10A. Is done.
- the body 30 of the syringe unit 3 may be made of, for example, known nylon 6-12, polyarylate, polybutylene terephthalate, polyphenylene sulfide, or liquid crystal polymer. These resins may contain a filler such as glass fiber or glass filler. In polybutylene terephthalate, 20 to 80% by mass of glass fiber, and in polyphenylene sulfide, 20 to 80% by mass of glass fiber, The liquid crystal polymer may contain 20 to 80% by mass of mineral.
- the plunger 4 is arranged so as to be slidable in the direction of the nozzle portion 31 (front end side direction), and between the plunger 4 and the body of the syringe portion 3.
- the formed space is a space in which the administration liquid 320 is enclosed.
- the plunger 4 slides in the filling chamber 32, the administration liquid 320 accommodated in the filling chamber 32 is pressed and ejected from the ejection port 31 a provided on the distal end side of the nozzle portion 31. become. Therefore, the plunger 4 is formed of a material that can smoothly slide in the filling chamber 32 and does not leak the administration liquid 320 from the plunger 4 side.
- the plunger 4 for example, butyl rubber or silicon rubber can be adopted. Furthermore, styrene elastomers, hydrogenated styrene elastomers, polyolefins such as polyethylene, polypropylene, polybutene, and ⁇ -olefin copolymers, oils such as para, process oil, and powders such as talc, cast, mica, etc. What mixed the inorganic substance is mention
- various rubber materials such as polyvinyl chloride elastomer, olefin elastomer, polyester elastomer, polyamide elastomer, polyurethane elastomer, natural rubber, isoprene rubber, chloroprene rubber, nitrile-butadiene rubber, styrene-butadiene rubber (especially added) Sulfurized ones) and mixtures thereof can be used as the material of the plunger 4.
- the surface of the plunger 4 and the surface of the filling chamber 32 of the syringe part 3 may be coated and surface-treated with various substances for the purpose of ensuring and adjusting the slidability between the plunger 4 and the syringe part 3.
- PTFE polytetrafluoroethylene
- silicon oil diamond-like carbon, nanodiamond, etc.
- the vibration element thereof may be controlled.
- the plunger 4 has a head portion 41 and a trunk portion 42, and the two are connected by a neck portion 43 having a diameter smaller than the diameter of the head portion 41 and the trunk portion 42. Can be.
- the reason why the diameter of the neck portion 43 is reduced in this way is to form an accommodation space for an O-ring that becomes a seal member.
- the contour on the tip side of the head 41 has a shape that substantially matches the contour of the inner wall surface of the nozzle portion 31. Thereby, the plunger 4 slides to the nozzle part 31 side when the administration liquid is ejected, and reaches the innermost wall position in the filling chamber 32 between the plunger 4 and the inner wall surface of the nozzle part 31.
- the gap formed in the container can be made as small as possible, and the administration liquid 320 can be prevented from remaining in the filling chamber 32 and being wasted.
- the shape of the plunger 4 is not limited to a specific shape as long as a desired effect is obtained in the administration device of the present embodiment.
- one or a plurality of protrusions can be provided in the body part 42 to adjust the contact area between the plunger 4 and the filling chamber 32 to adjust the slidability between the plunger 4 and the syringe part 3. The slidability can also be adjusted by changing the shape of this, and thereby the injection pressure transition and its vibration element described later may be controlled.
- the plunger 4 is provided with a rod portion 44 extending from the end surface on the base end side of the body portion 42 in the direction of the base end side.
- the rod portion 44 is sufficiently small in diameter as compared to the body portion 42, but has a diameter that allows the user to grip the rod portion 44 and move the inside of the filling chamber 32. Further, even when the plunger 4 is at the innermost position of the filling chamber 32 of the syringe part 3, the rod part 44 protrudes from the end face on the proximal end side of the syringe part 3 so that the user can grip the rod part 44. The length of the part 44 is determined.
- the inner diameter of the flow path provided in the nozzle part 31 on the syringe part 3 side is formed smaller than the inner diameter of the filling chamber 32.
- the shield part 31b may be shielded so that the injected liquid does not scatter around it. it can.
- the skin is recessed to some extent, so that the contact property between the injection port and the skin can be improved and scattering of the administration liquid can be suppressed. Therefore, as shown in FIG. 2A, the tip of the nozzle part 31 where the injection port 31a is located may protrude slightly from the end face of the shield part 31b in the injection direction of the administration liquid.
- a threaded portion 33 a for connecting the administration device main body 6 and the syringe unit 3 on the sub-assembly 10B side described later is formed on the neck 33 located on the proximal end side of the syringe unit 3.
- the diameter of the neck 33 is set smaller than the diameter of the body 30.
- the piston 5 is configured to slide in a through-hole 64 formed in the body 60 of the administration device body 6 by being pressurized by the combustion product generated by the igniter 71 of the drive unit 7. ing.
- the administration device body 6 is formed with a coupling recess 61 on the distal end side with respect to the through hole 64.
- the coupling recess 61 is a portion that couples with the neck portion 33 of the syringe portion 3, and a screw portion 62 a that engages with the screw portion 33 a provided on the neck portion 33 is formed on the side wall surface 62 of the coupling recess 61.
- the through hole 64 and the coupling recess 61 are connected by the communication part 63, and the diameter of the communication part 63 is set smaller than the diameter of the through hole 64.
- the administration device main body 6 is formed with a driving portion recess 65 on the proximal end side with respect to the through hole 64.
- the drive unit 7 is disposed in the drive unit recess 65.
- the piston 5 is made of metal and has a first body 51 and a second body 52.
- the piston 5 is disposed in the through hole 64 such that the first body 51 faces the coupling recess 61 and the second body 52 faces the drive part recess 65.
- the piston 5 slides in the through hole 64 while the first body 51 and the second body 52 are opposed to the inner wall surface of the through hole 64 of the administration device body 6.
- the first body portion 51 and the second body portion 52 are connected by a connecting portion that is thinner than the diameter of each body portion, and the space between both body portions formed as a result is a through hole 64.
- an O-ring or the like is disposed.
- the piston 5 may be made of resin, and in that case, a metal may be used in combination in a portion where heat resistance and pressure resistance are required.
- a pressing column portion 53 having a diameter smaller than that of the first body portion 51 and smaller than the diameter of the communication portion 63 of the administration device body 6 is provided on the end surface on the distal end side of the first body portion 51. It has been.
- the pressing column portion 53 is provided with an accommodation hole 54 that opens to the end surface on the distal end side thereof, whose diameter is equal to or larger than the diameter of the rod portion 44, and whose depth is deeper than the length of the rod portion 44. . Therefore, the pressing column 53 has its combustion energy transferred to the base end side end face of the body 42 of the plunger 4 when the piston 5 is pressurized by the combustion product of the igniter 71 via the end face on the front end side. Can be communicated to.
- the shape of the piston 5 is not limited to the shape shown in FIG. 2B.
- the drive unit 7 has a body 72 formed in a cylindrical shape, and includes an igniter 71 that is an electric igniter that burns an igniting agent to generate energy for injection.
- the driving energy is disposed in the driving unit recess 65 so that the combustion energy is transmitted to the second body 52 of the piston 5.
- the body 72 of the drive unit 7 may be a resin in which an injection molded resin is fixed to a metal collar. A known method can be used for the injection molding.
- the resin material of the body 72 of the drive unit 7 is formed of the same resin material as that of the body 30 of the syringe unit 3.
- the igniter used in the igniter 71 is a so-called high energy substance.
- the combustion energy of the said ignition powder turns into administration energy for the administration apparatus 1 which is an administration apparatus to administer an administration liquid to an object area
- the igniting agent is preferably an explosive containing zirconium and potassium perchlorate (ZPP), an explosive containing titanium hydride and potassium perchlorate (THPP), an explosive containing titanium and potassium perchlorate (TiPP).
- no gas generating agent is arranged as an additional explosive component, but an igniter is used in order to adjust the pressure transition applied to the administration liquid via the piston 5. It is also possible to arrange a gas generating agent or the like that burns with combustion products generated by the explosive combustion in 71 to generate gas.
- the location is, for example, a location that can be exposed to combustion products from the igniter 71, as shown by the dotted line in FIG. 2B.
- the gas generating agent disposed in the igniter 71 is a known technique as disclosed in International Publication No. 01-031282, Japanese Patent Application Laid-Open No. 2003-25950, and the like.
- the gas generating agent a single base smokeless gunpowder composed of 98% by mass of nitrocellulose, 0.8% by mass of diphenylamine and 1.2% by mass of potassium sulfate can be mentioned. It is also possible to use various gas generating agents that are used in gas generators for airbags and gas generators for seat belt pretensioners. It is possible to change the combustion completion time of the gas generating agent by adjusting the size, size and shape of the gas generating agent when disposed in the through hole 64, in particular, the surface shape. By adjusting the pressure transition applied to the administration liquid, the injection pressure can be set as a desired transition. In the present embodiment, a gas generating agent used as necessary is also included in the drive unit 7.
- the filling liquid 320 in the sub-assembly 10A is filled with the plunger 4 while immersing the injection port 31a in a container filled with the administration liquid while the plunger 4 is inserted to the innermost position. Is carried out by pulling back to the opening side of the filling chamber 32, that is, to the proximal end side of the syringe unit 3. At this time, the plunger 4 is pulled out until the end surface on the proximal end side of the body portion 42 of the plunger 4 slightly protrudes from the end surface on the proximal end side of the syringe portion 3.
- the piston 5 is inserted from the proximal end side of the administration device body 6 shown in FIG. 2B. At this time, the piston 5 is inserted into the through hole 64 so that the pressing column portion 53 faces the coupling recess 61 side.
- the end surface on the front end side of the piston 5, that is, the end surface on the front end side of the pressing column portion 53 in which the accommodation hole 54 opens, is in a state of protruding a predetermined amount from the bottom surface (surface orthogonal to the side wall surface 62) of the coupling recess 61.
- a known technique such as setting a positioning mark in the through hole 64 or using a positioning jig may be used as appropriate.
- the drive part 7 is attached to the recessed part 65 for drive parts.
- the fixing force in the through-hole 64 of the piston 5 is such that the piston 5 can slide in the through-hole 64 sufficiently smoothly depending on the pressure received from the combustion product by the igniter 71 of the drive unit 7, and
- the piston 5 is sufficiently resistant to the force that the piston 5 receives from the plunger 4 when the subassembly 10A is attached to the subassembly 10B, so that the position of the piston 5 does not fluctuate.
- the device assembly 10 is formed by attaching the sub-assembly 10A configured as described above to the sub-assembly 10B by screwing the screw portions 33a and 62a. At this time, as the coupling of the two proceeds, the rod portion 44 of the plunger 4 enters and is accommodated in the accommodation hole 54 provided in the pressing column portion 53 of the piston 5. The end surface on the distal end side of the pressing column portion 53 comes into contact with the end surface on the proximal end side of the body portion 42 of the plunger 4. Since the accommodation hole 54 is large enough to accommodate the rod portion 44, the inner wall surface behind the accommodation hole 54 (particularly, the bottom surface of the accommodation hole 54) is the rod portion in this contact state.
- the rod portion 44 is not in contact with the end portion on the base end side, and therefore the rod portion 44 does not receive a load from the piston 5 side.
- the piston 5 is fixed to the through-hole 64 with sufficient frictional force as described above, so that the plunger 4 is moved toward the injection port 31a by the pressing column 53.
- the plunger 4 is pushed in such a way that the plunger 4 is positioned in the syringe unit 3. A part of the administration liquid 320 corresponding to the pushing amount of the plunger 4 is discharged from the injection port 31a.
- the piston 5 is positioned at a predetermined position with respect to the administration device body 6, and the position of the plunger 4 in the filling chamber 32 of the syringe unit 3 is mechanically determined with reference to the piston 5. Will be finally decided. Since the final position of the plunger 4 is a position uniquely determined in the device assembly 10, the amount of the administration liquid 320 finally stored in the filling chamber 32 is set to a predetermined amount. It becomes possible.
- the device assembly 10 is attached to the housing 2, and the user presses the button 8 in a state where the injection port 31 a is in contact with the target region, whereby the administration liquid 320 is connected via the piston 5 and the plunger 4. Is pressurized, its injection is performed, and the dosing liquid 320 is dispensed into the target area.
- examples of the target region of the administration device 1 include a skin structure of a living body such as a human or a domestic animal.
- FIG. 3 schematically shows the anatomical structure of human skin.
- the human skin is composed of the epidermis, dermis, subcutaneous tissue / muscle tissue in layers from the skin surface side to the depth direction, and the epidermis can be distinguished into the stratum corneum, intradermal and layered.
- Each layer of the skin structure is different also in the main cells constituting the tissue and the characteristics of the tissue.
- the stratum corneum is mainly composed of keratinocytes and has a function as a barrier layer because it is located on the outermost surface side of the skin.
- the stratum corneum has a thickness of about 0.01 to 0.015 mm, and protects human surface by keratinocytes. For this reason, a relatively high strength is also required to physically shield the external environment and the human body to some extent.
- the skin is composed of dendritic cells (Langerhans cells) and pigment cells (melanocytes), and the epidermis is formed by the stratum corneum and the skin.
- the thickness of the epidermis is generally 0.1- It is about 2 mm.
- Dendritic cells in the skin are thought to be involved in antigen / antibody reactions. This is because the antigen-antibody reaction that activates the lymphocytes that recognize dendritic cells and play a role in foreign body attack is easily induced by taking up the antigen.
- pigment cells in the skin have a function of preventing the influence of ultraviolet rays irradiated from the external environment.
- blood vessels and capillaries on the skin are intricately spread in the dermis, and sweat glands for adjusting body temperature, hair roots of body hair (including hair) and sebaceous glands associated therewith also exist in the dermis. .
- the dermis is a layer that connects the human body (subcutaneous tissue / muscle tissue) and the epidermis and includes fibroblasts and collagen cells. Therefore, the state of the dermis is largely involved in the generation of wrinkles and hair loss due to so-called lack of collagen or elastin.
- the human skin structure is generally formed in a layered manner, and inherent anatomical functions are exhibited by the cells / tissues mainly contained in each layer. This means that, when medical treatment or the like is performed on the skin, it is desirable that the substance for treatment reaches the location (depth) of the skin structure according to the treatment purpose. . For example, since dendritic cells exist in the skin, a more effective antigen-antibody reaction can be expected by reaching the vaccine here. Furthermore, since pigment cells are present in the skin, it is required to administer a predetermined whitening substance into the skin even when a so-called whitening cosmetic treatment is performed.
- fibroblasts and collagen cells exist in the dermis, proteins, enzymes, vitamins, amino acids, minerals, sugars, nucleic acids, various growth factors (epithelial cells and fibroblasts) are used to remove skin wrinkles. ) Etc., an effective beauty treatment effect is expected.
- stem cell injection method in which dermal papilla cells, epidermal stem cells, etc. are self-cultured and autotransplanted into the scalp, and several growth factors and nutrients extracted from stem cells are placed near the dermis. It is said that injection is preferable.
- the predetermined substance to be administered according to the treatment purpose and the position (depth) in the skin structure to which it is desirably administered individually correspond to each other. It is not easy to deliver. Even if the predetermined substance can reach the intended arrival position, if the cells in the vicinity of the arrival position are destroyed by the administration liquid containing the predetermined substance, the desired effect of the predetermined substance is sufficiently obtained. You can't expect. Furthermore, if the administration liquid exerts some load on the tissue or cells through which the administration liquid has passed in the process up to the arrival position, and causes its destruction, it may cause internal bleeding, pain, etc. It is recognized by the user and gives discomfort.
- the administration liquid when there is no structure (introduction part) that guides the administration liquid to the inside of the target region from the device that administers the administration liquid to the target region, such as the administration device 1, the administration liquid is in the target region.
- a certain amount of energy is given to the administration liquid so as to be able to enter the inside (in the case of this embodiment, the energy is combustion energy by the igniter 71). Therefore, since the administration liquid is given a relatively high energy and is ejected toward the target area, it tends to exert unnecessary mechanical action on the target area components (for example, cells).
- the invasiveness is not necessarily low. In the prior art, the injection of the administration liquid in which the invasiveness to the target region is sufficiently considered is not performed as described above, and therefore, the efficacy and the like by the predetermined substance cannot be sufficiently extracted.
- the minimally invasiveness with respect to the target region for example, administering the administration liquid so as not to damage the functions of the organs and tissues of the living body at the time of administration, or suppressing the damage of the functions as much as possible.
- administering the administration liquid is defined as administering the administration liquid.
- the administration liquid is administered so as not to cause unnecessary cell death, or administration is performed while suppressing unnecessary cell death as much as possible.
- administering a liquid the pressure transition of the administration liquid ejected from the administration device 1 depends on the combustion energy generated in the drive unit 7 so as to be less invasive to the target region. A configuration for adjusting the pressurization of the administration liquid was adopted. Details will be described below.
- FIG. 4 shows the transition of the pressure of the administration liquid ejected from the ejection port 31a (hereinafter simply referred to as “injection pressure”) when the administration device 7 is driven by the administration device 1 to eject the administration liquid.
- FIG. The horizontal axis in FIG. 4 represents elapsed time in milliseconds, and the vertical axis represents injection pressure in MPa.
- the injection pressure can be measured using conventional techniques. For example, in the measurement of the radiation output, as in the measurement method described in Japanese Patent Application Laid-Open No. 2005-21640, the injection force is distributed and applied to the diaphragm of the load cell arranged downstream of the nozzle.
- the output may be measured by a method in which the output is collected by a data acquisition device via a detection amplifier and stored as a time-dependent emission power (N).
- the injection pressure is calculated by dividing the measured radiation output by the area of the injection port 31a of the administration device 1.
- ZPP including zirconium and potassium perchlorate
- a gas generating agent is disposed in the through hole 64. It is a transition of the obtained injection pressure.
- the upper part (a) of FIG. 4 shows the transition of the injection pressure in the period from the start of combustion to about 40 milliseconds from the time when the button 8 is pressed by the drive unit 7 as the origin.
- (B) is an enlarged display of the injection pressure transition in the initial period (a period until about 10 milliseconds have elapsed from the origin) in the pressure transition shown in the upper stage (a). Note that the rise of the injection pressure is not at the origin but in the vicinity of 5 milliseconds.
- the ignition liquid burns and the piston 5 is driven by the combustion energy to pressurize the administration liquid and inject from the injection port 31a. This is because it takes a certain amount of time to complete.
- a plurality of pressure vibration elements S1 to S4 exist during a predetermined period ⁇ t until about 2 milliseconds elapse from the rising timing T0. After the elapse of the predetermined period ⁇ t, the pressure vibration is almost converged.
- pressure vibration one cycle in which the injection pressure rises and falls is handled as one pressure vibration element.
- a pressure vibration element S1 (hereinafter referred to as “first vibration element S1”) is first generated.
- the first vibration element S1 is a change in injection pressure during a period from when the peak value Px1 (about 45 MPa) is reached once to the next minimum value after the injection pressure (about 0 Pa) at the rising timing T0.
- the fluctuation range (peak to peak) of the injection pressure during the period is defined as the total amplitude of the first vibration element S1, and specifically, the total amplitude of the first vibration element S1 is about 45 MPa.
- the second vibration element S2, the third vibration element S3, and the fourth vibration element S4 follow the first vibration element S1.
- the second vibration element S2 is a change in injection pressure during a period from when the peak value Px2 (about 37 MPa) is reached to the next minimum value from the end timing of the first vibration element S1.
- the fluctuation range (peak to peak) of the injection pressure during the period is defined as the total amplitude of the second vibration element S2, and specifically, the total amplitude of the second vibration element S2 is about 10 MPa.
- the third vibration element S3 and the fourth vibration element S4 the period for defining each vibration element and the total amplitude of each vibration element are the same as those of the second vibration element S2, and the detailed description thereof is omitted.
- the total amplitude of the third vibration element S3 and the total amplitude of the fourth vibration element S4 decrease with time. That is, in the predetermined period ⁇ t, the pressure transition is a damped vibration with the passage of time, and the vibration is almost converged after the predetermined period ⁇ t has elapsed.
- the period of pressure oscillation in the predetermined period ⁇ t is about 0.5 milliseconds, and from the peak value of the second vibration element S2 and the peak value of the third vibration element S3.
- the calculated period is about 0.5 milliseconds.
- the pressure fluctuation in the predetermined period ⁇ t is mainly caused by the combustion of the igniter in the igniter 71.
- combustion of the gas generating agent in the through hole 64 is started by the combustion product of the igniting agent, and the combustion energy further starts to act on the administration liquid.
- the injection pressure increases again after the elapse of the predetermined period ⁇ t, and reaches the peak value Py at a timing of approximately 18 milliseconds. After that, the injection pressure gradually decreases with time. Since the burning rate of the gas generating agent is lower than the burning rate of the igniting agent, the rate of increase of the injection pressure accompanying the burning of the gas generating agent is also relatively low.
- the administration to the epidermis of the skin structure shown in FIG. 3 shows how the administration liquid acts on the composition in the target region and exhibits minimal invasiveness by the injection pressure showing such transition characteristics. Will be described as an example.
- the epidermis and the dermis are closely joined by the epidermis basement membrane structure, and the part in contact with both is the epidermis basement membrane.
- a transparent zone is formed between the cell membrane of the basal cell and the basement plate, and the hemidesmosome is greatly involved in the junction between the basal cell and the basement membrane.
- desmosomes and gap junctions are involved in the junction between adjacent basal cells.
- the desmosome has a structure called an adhesion plate inside the cell membrane and a structure that penetrates the cell membrane and takes charge of adhesion between cells.
- the gap junction is formed by connexin, and thereby has a structure in which adjacent cells are joined with a gap of 2 to 3 nm. These joining means prevent dissociation between the epidermis and the dermis and retain moisture in the skin structure.
- the cells themselves are surrounded by the cell membrane, and there are various types of joining means between the cells. Therefore, in order to show minimally invasiveness to cells when the skin structure is a target area for administration of administration liquid, unnecessary mechanics to the cell membrane while suitably resisting the bonding force between cells by the bonding means It is considered important to control the injection pressure so as to avoid the negative effect. And it is thought that the technical idea regarding such injection pressure can be similarly applied to a target region in a living body other than the skin structure.
- the first vibration element S1 having the highest peak pressure is first generated within the predetermined period ⁇ t, and then the second, third, and fourth vibration elements S2 to S4. Will arrive sequentially.
- the total amplitude of each vibration element decreases in order, and the pressure vibration attenuates.
- the administration liquid to which relatively high energy is applied in order to penetrate the surface layer of the target region at the initial stage of administration disperses the mechanical action on the cell membrane. Therefore, it is considered that destruction to the cell membrane can be avoided.
- the transition of the injection pressure during the predetermined period ⁇ t is a pressure vibration at a frequency of about 2000 Hz, and this frequency is relatively close to the natural frequency of a living cell. Therefore, when the administration liquid having the injection pressure transition shown in FIG. 4 (b) enters the target region, the cells are easily vibrated greatly, and as a result, without exerting unnecessary mechanical action on the cell membrane, It is thought that diffusion of the administration liquid between cells is promoted. From this, it is preferable that the vibration frequency of the injection pressure in the predetermined period ⁇ t is a frequency belonging to a predetermined frequency range associated with the natural frequency of the constituent (cell or the like) in the target region.
- the total amplitude of each of the other vibration elements S2 to S4 excluding the first vibration element S1 is smaller than the reference total amplitude value.
- the inventor of the present application shows that the peak value of the first vibration element S1 is relatively higher than the second, third, and fourth vibration elements S2 to S4 in the pressure transition showing the damped vibration within the predetermined period ⁇ t. Pay attention.
- an instantaneous pressure vibration element such as the first vibration element S1
- minute distortion occurs between the cell membranes, and the joining force by the joining means described above can be effectively canceled.
- the force that acts directly on the cell membrane itself can be suppressed. That is, according to the instantaneous fluctuation of the injection pressure due to the first vibration element S1, the administration liquid easily flows along the interface between the cells and exerts a mechanical action on the target region so as to shift the cells from each other.
- the peak value Px1 of the first vibration element S1 becomes excessively large, it is considered that the mechanical action on the cell membrane itself cannot be ignored. Therefore, the peak value Px1 has other vibrations in consideration of low invasiveness. It is preferable to set a predetermined upper limit ratio based on the peak value (for example, the peak value Px2 of the second vibration element S2 having the next highest peak value). Therefore, in the present embodiment, the ratio of the peak value Px1 to the peak value Px2 is greater than 1 and lower than the predetermined upper limit ratio.
- the injection pressure oscillates and the peak value of the first first vibration element S1 in the oscillation of the injection pressure is By increasing the ratio within a range of a ratio larger than 1 and smaller than a predetermined upper limit ratio with respect to the other vibration elements (S2 to S4), it is possible to show minimally invasiveness during administration of the administration liquid.
- the inventor of the present application does not consider that both requirements are necessary in the transition of the injection pressure in order to realize minimally invasive administration. By adopting either one of the requirements, it is possible to realize minimally invasive administration. However, more favorable minimally invasive administration can be realized by adopting both requirements in the transition of the injection pressure.
- the combustion of the gas generating agent is started by the combustion product of the igniting agent.
- the injection pressure of the administration liquid in which the pressure oscillation has almost converged rises again and reaches the peak value Py.
- the purpose of administration by the administration device 1 is to introduce a predetermined substance into the cell
- the administration liquid enters the target region, the cell membrane is pressurized over a wide area by the administration liquid faster than the strain propagates to the cells in the region, and a void is temporarily generated in the cell membrane. As a result, it is considered that introduction of substances into cells is promoted in a minimally invasive manner.
- the peak value of the first vibration element that is the first vibration element in the pressure vibration within the predetermined period ⁇ t is based on the peak value of the other vibration element (for example, the second vibration element) as described above.
- the peak value of the first vibration element and the flow rate corresponding to the peak value are set to be higher than the reference injection pressure and the reference flow rate set independently of the parameters of the pressure vibration in the predetermined period ⁇ t. You may make it high.
- the reference injection pressure and the reference flow rate may be changed as appropriate according to the target area to be administered.
- the tissue that does not constitute the blood vessel in the organ while suppressing the influence on the blood vessel in the organ as much as possible due to its low invasiveness. It becomes possible to administer a predetermined substance. Particularly in organs containing many blood vessels such as the liver, administration with minimal invasiveness is extremely useful. Therefore, the reference injection pressure and the reference flow velocity described above are set so that minimally invasiveness to the blood vessels in the organ can be realized.
- the horizontal axis of FIG. 5 represents elapsed time in milliseconds, and the vertical axis represents pressure in MPa.
- the line L1 in the figure represents the change in pressure in the through-hole 64 in the administration device 1
- the line L2 represents the change in pressure of the administration liquid 320 enclosed in the filling chamber 32.
- L3 is the injection pressure of the administration liquid 320.
- the pressure value is displayed with the value of 50% of the original value overlapped with the other pressure transitions (lines L1, L2).
- the pressure in the through hole 64 is measured by installing a pressure sensor in a pressure measurement port provided so as to be connected to the through hole 64, and the administration liquid pressure in the filling chamber 32 is connected to the filling chamber 32. It is measured by installing a pressure sensor in the pressure measurement port provided in the.
- the igniter in the igniter 71 burns, so that the pressure in the through hole 64 rises sharply.
- the piston 5 pushes the plunger 4 so that the administration liquid is pressurized through the plunger 4.
- the pressure of the administration liquid in the filling chamber 32 due to the pressurization rises at a time slightly earlier than the rise time of the injection pressure, as shown by the line L2, but is approximately equal to or higher than the rise of the injection pressure.
- the subsequent pressure vibrations are damped vibrations with substantially the same period and substantially constant frequency as the injection pressure transitions. That is, in the example shown in FIG. 5, the injection pressure transition has converged in a predetermined period ⁇ t of about 1.5 milliseconds.
- the substance introduction efficiency into the target region can be increased using the change reaction.
- Japanese Patent Application Laid-Open No. 2003-261777 discloses a technique in which a fine hydrogel is formed when a water-soluble natural product capable of hydrogen bonding with polyvinyl alcohol is placed under high pressure. Under high pressure, the hydroxyl group, amino group, and carboxylic acid group of natural products are bonded to form a micro hydrogen bond aggregate, which may change the three-dimensional structure of the molecule and make it easier to permeate the membrane. .
- the substance after reaction can be introduce
- the design system 200 is a system for calculating design specification information related to the administration device 1 necessary for the administration purpose of the administration device 1 described above. And the information regarding the required administration purpose is input into the design system 200 by the user (for example, medical worker) of the administration apparatus 1, for example. Moreover, another person (for example, person who designs an administration apparatus) may input the said information reflecting the information from the user of the administration apparatus 1.
- FIG. Therefore, the design system 200 can also be said to be a system in which request information related to the user's administration purpose is input information, and design specification information on the administration device 1 side necessary for realizing the request is output information.
- the design system 200 includes three types of administration devices 1a to 1c (in the following, when it is not necessary to individually refer to the administration devices, the regions to be administered with the administration liquid are different.
- the design specification information corresponding to each of the administration devices 1 is simply calculated. Three types of administration devices are illustrated as described above.
- regions to be administered are different, such as the liver, heart, skin, etc.
- user requirements purposes for administration
- This specified administration device corresponds to the target administration device according to the present embodiment.
- the design system 200 includes a processing device 200a and a calculation map storage unit 200b.
- the processing device 200a is a device that receives the request information and calculates and outputs the design specification information based on the information.
- the processing content will be described later with reference to FIG.
- the calculated map storage unit 200b is a so-called memory, corresponds to the map information holding unit of the present embodiment, and is electrically connected so that the processing device 200a can be accessed when calculating the design specification information. .
- the input information is request information related to the administration purpose on the user side, and is classified into three types in the present embodiment: substance information, region information, and distribution information. These pieces of information are information set from the aspect of how to effectively exhibit the efficacy or the like of the predetermined substance contained in the administration liquid in the administration target area when the user uses the administration device 1. is there.
- substance information is information related to a predetermined substance having a characteristic that exhibits the efficacy required by the user.
- the substance information includes information on the drug contained in the administration liquid, the concentration, viscosity and density of the drug in the administration liquid, the specific heat of the administration liquid, the administration amount (administration liquid amount), the temperature, the bulk modulus, etc. It can be illustrated.
- the predetermined substance is not limited to a drug, but may be other liquid or solid substances that can be exemplified by physiologically active substances for regenerative medicine.
- the substance information includes not only information related to a predetermined substance such as a drug but also information related to a mixture (administration liquid or the like) formed by mixing the predetermined substance with a solvent.
- the substance information does not necessarily have to include these pieces of information, but may include some of these pieces of information, or other information related to the predetermined substance. May be included.
- the substance information is information having a correlation with the behavior of the predetermined substance in the target region after administration, and is also information necessary for realizing the efficacy requested by the user. In order to realize this, it is considered necessary to adjust the above-described injection pressure transition, which is the administration capability on the administration device 1 side. Therefore, the substance information is set as one piece of input information.
- the bulk modulus which is one of the substance information
- the volume modulus (K) can be roughly calculated according to the following equation from the sound velocity (c) corresponding to the temperature of the administration liquid at the time of administration of the administration liquid and the density ( ⁇ ) of the administration liquid.
- K c 2 ⁇ ⁇
- an apparatus capable of measuring both parameters simultaneously such as a density / sound velocity densitometer DSA 5000 M manufactured by Anton Paar Japan.
- P the pressure related to the administration liquid
- ⁇ the volume strain of the administration liquid at that time.
- the area information is information related to a target area to which an administration liquid containing a predetermined substance having characteristics that exhibit the efficacy and the like required by the user is administered.
- region information information on a living organ organ (eyeball, heart, liver, etc.), bones, teeth, etc., which is an administration target region, hardness of the surface layer of the administration target region, and diffusion of administration liquid in the inside Physical parameters related to the degree can be exemplified.
- the area information related to the area may have so-called individual differences, and the administration is performed with sufficient consideration of the individual differences depending on the user's request. There is a need.
- the region information includes, for example, the age, sex, race, weight, etc. of the living body to be administered.
- the region information is information related to the administration target region in which expression of the efficacy or the like of the predetermined substance is required, and is information related to the region where the injected administration liquid should enter and diffuse.
- the area information is set as one piece of input information.
- the area information can be measured using an existing measurement technique.
- the Young's modulus of the target area which is one of the area information
- the Young's modulus is calculated by sucking the target area from the opening at the tip of the measurement probe for a certain period of time and then measuring the displacement of the target area in the open state. Suction method that pushes the target area at a constant speed and measures the reaction force at that time, and the air jet method (Ryo Makio, Atsuko Oguri, Ryu Kuwamizu, Kukizo Miyamoto, Development of a method for measuring the skin Young's modulus of human skin, the Japan Society of Mechanical Engineers paper).
- an imaging apparatus using ultrasonic waves can be used.
- the elongation at break, elastic modulus, and yield strength can be measured by a tensile test or the like defined in JIS standards for materials close to the physical properties of the administration target region (for example, the administration target region is a skin structure).
- the administration target region is a skin structure.
- JIS standard K7312 regarding the thermosetting polyurethane elastomer molding.
- the Poisson's ratio can be calculated from the measurement results of shear stress relaxation and compression stress relaxation.
- each physical property such as Young's modulus of a model imitating the administration target region (for example, a model formed of a synthetic polymer such as a gel) is used.
- the distribution information is information related to the state of the distribution of how the administration liquid should be distributed in the target region in the target region to which the predetermined substance is administered.
- the distribution information includes the administration depth of the administration liquid in the administration target region (degree of arrival of the administration liquid in a direction substantially perpendicular to the surface layer of the administration region), and the spread of the administration liquid in the administration target region (of the administration region).
- the prescribed substance be introduced directly into the cell (in the membrane or nucleus) or should the prescribed substance be diffused between the cells)
- the distribution information does not necessarily include the information.
- the distribution information may include a part of the information, or is related to the distribution in the administration target region. Other information may be included.
- the distribution information is information relating to the distribution of the administration liquid in the administration target region, which is necessary for efficiently expressing the efficacy required by the user, and greatly affects the administration effect of the administration device 1. Therefore, it is considered necessary to adjust the above-described injection pressure transition, which is the administration capability on the administration device 1 side. Therefore, the distribution information is set as one piece of input information.
- the above-described three pieces of information are employed as input information.
- a part of the three pieces of information may be used as input information.
- other information may be adopted as input information. What is important in the present embodiment is that the use of useful information for improving the administration effect of the administration device 1 as input information is not hindered.
- the output information is information related to the design specifications on the side of the administration device 1 necessary for realizing the user's request.
- the output information of the administration device 1 that adjusts the above-described injection pressure transition.
- Information related to the design specifications of the component is information related to the igniter contained in the igniter 71 (corresponding to energy information according to the present embodiment, hereinafter referred to as “explosive information”). Therefore, in this embodiment, the design specification information includes at least explosive information, and other dimensions (syringe unit 3, plunger 4, piston 5, administration device body 6), etc., constituting the administration device 1 other than that. And information on the shape may be included.
- the type, loading amount, shape, presence / absence of a gas generating agent, etc. can be exemplified.
- a gas generating agent When a gas generating agent is used, its type, loading amount, shape, and the like may be further included.
- design specification information relevant to the syringe part 3 the material of the body 30 of the syringe part 3, the shape of the nozzle part 31, the diameter of the injection port 31a, the number of the injection ports 31a, etc. can be illustrated.
- the design specification information related to the plunger 4 includes the material of the plunger 4 and parameters relating to the contact (friction) between the barrel 42 of the plunger 4 and the inner wall surface of the filling chamber 32 (surface shape of the barrel 42, etc.).
- the piston diameter that is, the area of the second body 52 that receives the energy due to combustion of the igniting agent
- the first body 51, the second body 52, and the through hole 64 The parameter regarding the contact (friction) with an inner wall surface can be illustrated.
- the design specification information related to the administration device main body 6 include the space volume in the through-hole 64 in which the combustion product of the igniting agent is released and the gas generating agent is arranged in some cases, the diameter of the through-hole 64, and the like. .
- the specific information is merely an example, and the design specification information does not necessarily have to include these pieces of information, and may include a part of the information, or the design specifications of the parts of the administration device 1. It may include other information related to.
- Calculation maps m1 to m3 for calculating respective design specification information of the administration devices 1a to 1c are stored in the calculation map storage unit 200b constituting the design system 200, respectively.
- the calculation map m1 will be described as an example.
- the calculation map m1 is a map for calculating design specification information for administration to the organ A (for example, liver).
- the organ A for example, liver
- the reference injection pressure transition p1 of the administration liquid that can realize minimally invasiveness is set in the set standard organ A by a prior experiment or simulation.
- the injection pressure transition p1 is set using the arrival time and so on as parameters. Then, by correlating the design specification information for the administration device 1a capable of realizing the reference injection pressure transition p1 with the reference input information of the substance information, the region information, and the distribution information corresponding to the reference injection pressure transition p1.
- a calculation map m1 is formed. That is, the calculation map m1 includes design specification information of the administration device 1a that allows the administration device 1a to realize the reference injection pressure transition when the reference input information in the administration device 1a is set. Preferably, the calculation map m1 includes design specification information corresponding to a plurality of reference input information.
- the calculation map m2 for the administration device 1b and the calculation map m3 for the administration device 1c are the same as the calculation map m1.
- the sensor 300 is connected to the processing device 200a.
- the sensor 300 is a sensor that can detect the Young's modulus related to the hardness of the surface layer of the administration target region included in the region information among the input information. For example, as described above, the Young's modulus is automatically detected using a suction method or a pushing method.
- the surface hardness information relating to the Young's modulus of the administration target area detected in this way is passed to the processing device 200a, and used for calculation processing of design specification information described later as area information.
- Other input information may be input by the user using an input device (such as a keyboard or a mouse) provided in the processing device 200a, and automatically or semi-automatically by a detection device different from the sensor 300. Alternatively, the corresponding information may be detected and passed to the processing device 200a.
- a preparation device 400 is electrically connected to the processing device 200a.
- the preparation device 400 is a device that prepares explosives to be loaded in any of the corresponding administration devices 1a to 1c based on explosive information included in design specification information output by the processing device 200a.
- the preparation device 400 stores a plurality of igniters for each administration device, takes out the igniter loaded with the most appropriate igniter according to the explosive information from the processing device 200a, and provides it to the user. Configured as follows. At this time, the color of the body of the igniter may be separately applied for each administration device so that the igniter provided by the user is appropriately attached to the corresponding administration device.
- the user can adjust suitably based on the design specification information output from the processing apparatus 200a.
- FIG. 7 is a diagram illustrating an image of functional units formed in the design system 200 regarding the calculation process.
- FIG. 8 is a flowchart of the calculation process.
- a predetermined calculation program is executed using an arithmetic unit, a memory, and the like in the processing device 200a, so that the functional unit illustrated in FIG. 7 is formed, and the calculation process illustrated in FIG. Realized.
- the design system 200 includes a control unit 200c and an input / output unit 210 as functional units, and further includes the calculation map storage unit 200b.
- the input / output unit 210 is a functional unit that receives a request from the user regarding the efficacy expected by administration by the administration device 1 and outputs the design specification information calculated by the processing device 200a to convey to the user. is there.
- the input request information is each of the above-described substance information, region information, and distribution information. As described above, the request information is input by an input device (such as a keyboard or a mouse) included in the processing device 200a, or what is the processing device 200a? A user request is input from a different device via a predetermined interface.
- Information regarding the hardness of the surface layer of the target area detected by the sensor 300 is also input to the input / output unit 210.
- the output of the design specification information when the calculation result is displayed on the display device (display) of the processing device 200a, or when the design specification information is used by another processing device outside the system, it is sent to the other processing device. It includes a form that is transmitted as electronic information.
- the control unit 200c includes a device specifying unit 201, a first acquisition unit 202, a second acquisition unit 203, a third acquisition unit 204, and a calculation unit 205.
- the device specifying unit 201 is a type of administration device (a device corresponding to the target administration device according to the present embodiment) that is a target of calculation of design specification information based on information input to the input / output unit 210.
- the first acquisition unit 202, the second acquisition unit 203, and the third acquisition unit 204 are functional units that acquire substance information, region information, and distribution information, respectively, based on information input to the input / output unit 210. .
- the calculation unit 205 realizes a user request based on each information acquired by the first acquisition unit 202, the second acquisition unit 203, and the third acquisition unit 204 in the administration device specified by the device specification unit 201. Therefore, it is a functional unit that calculates design specification information related to the specific administration device.
- S101 based on the information input to the input / output unit 210, it is determined whether or not the user has specified an administration device for which design specification information is to be calculated. This determination is executed by the device specifying unit 201. If an affirmative determination is made in S101, the process proceeds to S102, and if a negative determination is made, the process of S101 is repeated again.
- substance information is acquired by the first acquisition unit 202, region information is acquired by the second acquisition unit 203, and distribution information is acquired by the third acquisition unit 204.
- acquisition is performed in the order of substance information, region information, and distribution information.
- Information corresponding to each functional unit may be appropriately acquired in accordance with the input order of the user information.
- the design specification information is calculated by the calculation unit 205 in S105.
- the first acquisition unit 202 calculates the calculation map corresponding to the administration device specified by the device specification unit 201 among the calculation maps held by the calculation map storage unit 200b.
- Corresponding design specification information is extracted using the acquired substance information, the region information acquired by the second acquisition unit 203, and the distribution information acquired by the third acquisition unit 204 as arguments.
- the calculation unit 205 extracts design specification information corresponding to the reference input information.
- the calculation unit 205 identifies the reference input information close to the input information as the argument, and the reference input An output is obtained by interpolating design specification information corresponding to the information.
- Example 1 As a 1st Example, calculation of the design specification information of the administration apparatus 1 which administers influenza vaccine to a person is illustrated.
- the type of administration device to be used is determined according to the dose of the vaccine. Specifically, as shown in Table 1 below, the dose of the vaccine is selected from three types of 10 ⁇ L, 100 ⁇ L, and 1000 ⁇ L, and the administration devices 1a to 1c are used according to each dose. . For example, when an input with a dose of 100 ⁇ L is received by the input / output unit 210, the administration device 1b is selected as the use administration device. In addition, this use administration apparatus determination process is performed by the apparatus specifying unit 201.
- the substance information acquired by the first acquisition unit 202 in the present embodiment is information regarding the administration liquid containing the influenza vaccine, as shown in Table 2 below.
- region information acquired by the 2nd acquisition part 203 in a present Example is information regarding the skin structure of the person who is the administration object of influenza vaccine as shown in the following Table 3.
- the distribution information acquired by the third acquisition unit 204 in the present embodiment is information regarding the movement of the administration liquid in the human skin structure as shown in Table 4 below.
- the calculation unit 205 calculates design specification information based on the acquired substance information, region information, and distribution information. As described above, the calculation unit 205 uses the calculation map of the calculation map storage unit 200b to design the design specification. Calculate information. Therefore, generation of the calculation map will be described.
- a simulator was constructed to generate the calculation map. This simulator burns gunpowder in an igniter used in the administration device 1, generates pressure, drives the piston and plunger by the pressure, pressurizes the administration liquid by the plunger, and administers by the pressurization.
- this simulator when taking a mathematical view of this simulator, it includes design specification information as an argument, further driving the components of the administration device such as a piston, and the administration depth and spread of the injected administration liquid to the target region. It can be regarded as a multivariate function that determines the administration depth D and spread W as the distribution information, including the substance information and the region information that influence each other as arguments. Therefore, the processing by the simulator is expressed as a mathematical expression as follows.
- Dosing depth D D ((m Z , V in , m pl , d out ), ( ⁇ m , ⁇ , K), (t s , ⁇ s , E s , ⁇ s , ⁇ s ))
- Spread W W ((m Z , V in , m pl , d out ), ( ⁇ m , ⁇ , K), (t s , ⁇ s , E s , ⁇ s , ⁇ s ))
- m Z is the loading amount of the explosive which is a high energy substance
- the information regarding the explosive amount corresponds to the explosive information of the present embodiment.
- V in is the volume of the through-hole 64 is a combustion chamber, a design specification information for the administration device body 6.
- M pl is the mass of the plunger 4 and the piston 5, which is design specification information regarding the plunger 4 and the piston 5.
- d out is the diameter of the injection port 31a, which is design specification information regarding the syringe unit 3.
- the administration depth D and the spread W which are distribution information by the simulator, are calculated at the sampling points shown in Table 5 below.
- Table 5 the number of samplings for each parameter is written. According to this sampling number, the number of simulation results for all parameters is approximately 224 million points.
- the administration depth D and the spread W correspond to distribution information. Therefore, the calculated distribution information is combined with the substance information ( ⁇ m , ⁇ , K) and region information (t s , ⁇ s , E s , ⁇ s , ⁇ s ) shown in Table 5, and Table 5
- a calculation map can be generated by linking the design support information (m Z , V in , m pl , d out ) shown in FIG. The generated calculation map is stored in the calculation map storage unit 200b. This calculation map is generated for each of the administration devices 1a to 1c.
- the design support information corresponding to the selected administration device is obtained by accessing the calculated map generated in this way using the substance information, the region information, and the distribution information acquired from each acquisition unit as arguments. Will be calculated. That is, the calculation unit 205 applies a sorting algorithm using the substance information, region information, and distribution information acquired from each acquisition unit as arguments from the calculation map corresponding to the administration device determined from the input dose. To select sampling points suitable for each piece of information. Then, design specification information corresponding to the sampling point is derived.
- Example 2 In the first embodiment, the calculation method of the design specification information using the calculation map is shown. However, in the second embodiment, the administration depth D and the spread W, which are distribution information, are calculated instead. An example in which the function of the simulator is directly used for calculation of design specification information will be shown. As described above, the administration depth D and the spread W can be expressed as a multivariable function using the design specification information as an argument and the substance information and region information as parameters as follows.
- Dosing depth D D ((m Z , V in , m pl , d out ), ( ⁇ m , ⁇ , K), (t s , ⁇ s , E s , ⁇ s , ⁇ s ))
- Spread W W ((m Z , V in , m pl , d out ), ( ⁇ m , ⁇ , K), (t s , ⁇ s , E s , ⁇ s , ⁇ s ))
- the administration depth and spread values which are distribution information acquired by the third acquisition unit 204, are Dobj and Wobj, respectively.
- m Z , V which is the design specification information using the least square method so that the administration depth D and the spread W obtained by the multivariable function approach these Dobj and Wobj. in , m pl , and d out may be optimized.
- the calculation unit 205 calculates the design specification information using the simulator function as described above, the calculation is generally calculated as compared with the case where the design specification information is calculated using the calculation map shown in the first embodiment. Accuracy can be improved.
- explosive is explosive information among the design specification information calculated by the above-described first and second embodiments.
- the peak value of the first vibration element S1 in the above-described injection pressure transition increases as the requested administration depth D increases.
- the loading amount mZ is increased.
- the distribution information does not include the degree of invasiveness allowed in the administration target region as a parameter, but the invasiveness is included in the distribution information in the same manner as the administration depth and spread.
- design specification information capable of realizing the degree of invasiveness requested by the user can be calculated.
- the required level of minimally invasive is high (for example, when diffusion of a less invasive administration liquid is required)
- the peak value of the first vibration element S1 in the transition of the injection pressure described above is used.
- the diameter dout such loadings igniter m Z or injection port 31a is calculated.
- related design specification information may be calculated so that the predetermined period ⁇ t is shorter.
- the design system 200 of the present embodiment it is possible to more easily and suitably realize the administration effect by the administration device 1 requested by the user. Moreover, as shown in FIG. 6, the user can easily obtain a suitable igniter corresponding to the request by connecting the processing device 200a of the design system 200 and the preparation device 400.
- FIG. 9 shows a modification of the design system 200.
- the function of the control unit 200c and the function of the calculation map storage unit 200b illustrated in FIG. Then, the functions of the input / output unit 210 shown in FIG. 7 remain in each of the processing devices 200a, 600, and 700.
- a request from the user is input to each of the processing devices 200 a, 600, and 700 and transmitted to the processing server 500.
- the processing server 500 calculates design specification information corresponding to the specified administration device based on the transmitted device identification information and input information, and transmits it to the corresponding processing device again.
- the processing apparatus to which the design specification information has been transmitted outputs the result to the user through a display or the like.
- the design system 200 related to an administration device using a gunpowder as a power source is disclosed.
- the present invention is applied to other administration devices using a gunpowder as a power source, and a design system for the design system 200 is provided. It is possible to build.
- Such an administration apparatus is an apparatus that introduces a biological substance into cells using explosives as a power source, and it is also possible to administer the substance using the above-described injection pressure transition. Therefore, the present invention can be applied to the construction of a system for calculating such design specification information of the administration device.
- Examples of such administration devices include devices for seeding cultured cells, stem cells, and the like on cells or scaffold tissues / scaffolds to be administered for regenerative medicine for humans.
- cells that can be appropriately determined by those skilled in the art depending on the site to be transplanted and the purpose of recellularization such as endothelial cells, endothelial precursor cells, bone marrow cells, prebones Blast cells, chondrocytes, fibroblasts, skin cells, muscle cells, liver cells, kidney cells, intestinal cells, stem cells, and any other cells considered in the field of regenerative medicine are administered.
- the present invention is also applied to the calculation of design specification information of an administration device for delivery of DNA or the like to cells, scaffold tissues, or scaffolds as described in JP-T-2007-525192. Is possible.
- design specification information for devices that deliver various genes, tumor suppressor cells, lipid envelopes, etc. directly to the target tissue or administer antigen genes to enhance immunity against pathogens It is possible to apply this invention to.
- it is used in the field of various disease treatments (fields described in JP2008-508881, JP2010-503616, etc.), immunomedicine (fields described in JP2005-523679, etc.), etc.
- the present invention can also be applied to possible administration devices for calculating the design specification information.
- An example of an administration device that utilizes the above-described injection pressure transition is a catheter device.
- a catheter device has a catheter part that can enter a living body, and is a device that administers a desired medicinal solution or the like to the living body from its distal end.
- the present invention can be applied to the configuration of drug solution administration from the distal end portion of the catheter portion. That is, when the medical solution is administered from the distal end portion in a state where the catheter portion enters the inside of the living body, the injection pressure of the chemical solution is controlled so as to be the characteristic injection pressure transition of the present invention described above.
- minimally invasive drug solution administration can be realized for a predetermined region of a target region (for example, an internal organ such as the heart or liver) to which the drug solution is administered.
- a target region for example, an internal organ such as the heart or liver
- the design specification information of such a catheter device it is possible to apply the technical idea disclosed for the design system of the present invention.
- the technical idea disclosed regarding the design system of the present invention is also applicable to an administration device that uses other than the combustion energy of a high-energy substance. That is, using the technical idea of the present invention, based on substance information related to the administration liquid (administration target substance), area information related to the target area, and distribution information related to the distribution state, the energy of the spring, compressed gas, etc. It is also possible to calculate the design specification information of the administration device using.
- the design specification information in this case includes information such as a spring and compressed gas that are driving sources used for administration of the administration liquid (for example, the amount of compression of the spring and the accumulated pressure value of the compressed gas).
Abstract
Description
ここで、図1は、投与装置1の概略構成を示す図であり、投与装置1のその長手方向に沿った断面図でもある。投与装置1は、後述するシリンジ部3とプランジャ4とで構成されるサブ組立体(後述の図2Aを参照)10Aと、投与装置本体6とピストン5と駆動部7とで構成されるサブ組立体(後述の図2Bを参照)10Bとが一体に組み立てられた装置組立体10が、ハウジング2に取り付けられることで構成される。なお、本願の以降の記載においては、投与装置1により対象領域に投与される投与液体は、当該対象領域で期待される効能や機能を発揮する所定物質が液体の媒体に含有されることで形成されている。その投与液体において、所定物質は媒体である液体に溶解した状態となっていてもよく、また、溶解されずに単に混合された状態となっていてもよい。
ここで、投与装置1の対象領域の例として、ヒトや家畜等の生体の皮膚構造体が挙げられる。図3にはヒトの皮膚の解剖学的な構造を概略的に示す。ヒトの皮膚は、皮膚表面側から深さ方向に向かって、表皮、真皮、皮下組織・筋肉組織と層状に構成され、更に表皮は角層、皮内と層状に区別することができる。皮膚構造体の各層は、その組織を構成する主な細胞等や組織の特徴も異なる。
本実施形態に係る投与装置1のための設計システム200及び投与システムの概略構成について、図6に基づいて説明する。設計システム200は、上述までの投与装置1の投与目的のために必要な、投与装置1に関する設計仕様情報を算出するためのシステムである。そして、その要求される投与目的に関する情報は、例えば、投与装置1のユーザ(例えば、医療従事者)によって設計システム200に入力されることになる。また、投与装置1のユーザからの情報を反映して、別の者(例えば、投与装置を設計する者)が当該情報を入力する場合もある。したがって、設計システム200は、ユーザの投与目的に関連する要求情報を入力情報とし、その要求を実現するために必要な投与装置1側の設計仕様情報を出力情報とするシステムとも言える。
(1)物質情報
物質情報は、ユーザが求める効能等を発揮する特性を有する所定物質に関連する情報である。例えば、物質情報としては、投与液体に含まれる薬剤に関する情報、その投与液体における薬剤の濃度、粘度、密度や、その投与液体の比熱、投与量(投与液体量)、温度、体積弾性率等が例示できる。また、当該所定物質は薬剤だけではなく、再生医療用の生理活性物質等が例示できるその他の液体、固体の物質であってもよい。当該物質情報は、薬剤等の所定物質に関する情報だけではなく、所定物質が溶媒と混ざることで形成される混合物(投与液体等)に関する情報も含む。これらの具体的な情報はあくまでも例示であり、物質情報は必ずしもこれらの情報を含まなければならないわけではなく、これらの一部の情報を含んでもよく、又は、所定物質に関連する別の情報を含んでもよい。このように物質情報は、投与後の対象領域における所定物質の挙動に相関を有する情報であり、且つユーザが要求する効能等を実現するために必要な情報でもある。そして、その実現のために、投与装置1側の投与能力である上述の射出圧推移を調整する必要があると考えられる。そこで、物質情報は、入力情報の一つとして設定される。
K = c2×ρ
なお、投与液体の密度と音速の測定には、株式会社アントンパール・ジャパン製の密度・音速式濃度計DSA 5000 M等のように、両パラメータを同時に測定できる装置を利用するのが好ましい。
また、体積弾性率(K)を算出する別法として、Pを投与液体に係る圧力、εをそのときの投与液体の体積ひずみとすると、以下の式に従って算出することもできる。
K = P/ε
領域情報は、ユーザが求める効能等を発揮する特性を有する所定物質を含む投与液体が投与される対象領域に関連する情報である。例えば、領域情報としては、投与対象領域である生体の臓器器官(眼球、心臓、肝臓等)や骨、歯等に関する情報や、その投与対象領域の表層の硬さやその内部での投与液体の拡散程度に関連する物理パラメータ等が例示できる。より具体的には、投与液体が投与される対象領域のヤング率、ポアソン比、柔らかさに関する物理量、破断点伸度、弾性率、降伏点強度、応力緩和(せん断応力緩和、圧縮応力緩和)、密度、投与方向に沿った当該対象領域の厚さ、当該対象領域の層構造に関する情報、当該対象領域に含まれる細胞種等が例示できる。これらの具体的な情報はあくまでも例示であり、領域情報は必ずしもこれらの情報を含まなければならないわけではなく、これらの一部の情報を含んでもよく、又は、投与対象領域に関連する別の情報を含んでもよい。また、投与対象領域が生体に関連する場合、当該領域に関連する領域情報は、いわゆる個体差を有する場合もあり、ユーザの要求次第では、その個体差も十分に考慮した上で投与が行われる必要がある。そこで、個体差に関連する情報も領域情報に含めるようにしてもよい。個体差情報としては、例えば、投与対象となる生体の年齢、性別、人種、体重等が挙げられる。このように領域情報は、所定物質の効能等の発現等が求められる投与対象領域に関連する情報であり、射出された投与液体が進入拡散すべき領域に関連する情報である。その投与液体の挙動をより確実なものとするためには、投与装置1側の投与能力である、上述の射出圧推移を調整する必要があると考えられる。そこで、領域情報は、入力情報の一つとして設定される。
また、対象領域が生体である場合の領域情報のサンプルについては、下記の文献に開示の情報も有用である。
参考文献1:Agache PG, Monneur C, Leveque JL, De Rigal J, Mechanical properties and Young's modulus of human skin in vivo., Arch Dermatol Res 269(3), 1980, 221-232
参考文献2:Yamada H., Evans F. G., (Ed.), Strength of Biological Materials (Book), The Williams & Wilkins Company, 1970
分布情報は、所定物質が投与される対象領域において、投与液体がどのような挙動をもって対象領域内に分布した方がよいか、その分布の状態に関連する情報である。例えば、分布情報としては、投与対象領域における投与液体の投与深さ(対象領域の表層に対して概ね垂直の方向における投与液体の到達度合)や、投与対象領域における投与液体の広がり(対象領域の表層に対して概ね平行な方向における投与液体の拡散度合)に関連する情報や、投与対象領域において許容される侵襲性の程度、投与対象領域における所定物質が到達する位置(すなわち、生体に対して投与を行う場合に細胞内(膜内又は核内)に直接所定物質を導入すべきか、細胞間に所定物質を拡散すべきか)、表層から投与対象領域に進入してから到達位置に到達するまでに要する時間等の情報が例示できる。これらの具体的な情報はあくまでも例示であり、分布情報は必ずしもこれらの情報を含まなければならないわけではなく、これらの一部の情報を含んでもよく、又は、投与対象領域での分布に関連する別の情報を含んでもよい。このように分布情報は、ユーザによって求められている効能等を効率的に発現させるために必要な、投与対象領域での投与液体の分布に関する情報であり、投与装置1による投与効果を大きく左右するものであるから、投与装置1側の投与能力である、上述の射出圧推移を調整する必要があると考えられる。そこで、分布情報は、入力情報の一つとして設定される。
(実施例1)
第1の実施例としては、人へのインフルエンザワクチンの投与を行う投与装置1の設計仕様情報の算出について例示する。実施例では、ワクチンの投与量に応じて使用される投与装置の種類が決定される。具体的には、以下の表1に示すように、ワクチンの投与量が10μL、100μL、1000μLの3種類から選択され、各投与量に応じて投与装置1a~1cがそれぞれ使用されることになる。例えば、入出力部210によって投与量が100μLとの入力を受け付けた場合には、投与装置1bが使用投与装置として選択されることになる。なお、この使用投与装置の決定処理は、装置特定部201によって行われる。
投与深さD=D((mZ, Vin, mpl, dout), (ρm,μ, K), (ts, ρs, Es, σs, τs))
広がりW=W((mZ, Vin, mpl, dout), (ρm,μ, K), (ts, ρs, Es, σs, τs))
ここで、mZは高エネルギー物質である火薬の装填量であり、当該火薬量に関する情報は、本実施形態の火薬情報に相当する。また、Vinは燃焼室である貫通孔64の体積であり、投与装置本体6に関する設計仕様情報である。また、mplはプランジャ4及びピストン5の質量であり、これはプランジャ4及びピストン5に関する設計仕様情報である。また、doutは射出口31aの直径であり、これはシリンジ部3に関する設計仕様情報である。
上記第1の実施例では、算出マップを用いた設計仕様情報の算出手法を示したが、第2の実施例では、それに代えて分布情報である投与深さDと広がりWを算出するための上記シミュレータの機能を、設計仕様情報の算出に直接使用する例を示す。上記の通り、投与深さDと広がりWは、以下のように設計仕様情報を引数として、物質情報、領域情報をパラメータとする多変数関数として表すことができる。
投与深さD=D((mZ, Vin, mpl, dout), (ρm,μ, K), (ts, ρs, Es, σs, τs))
広がりW=W((mZ, Vin, mpl, dout), (ρm,μ, K), (ts, ρs, Es, σs, τs))
F= w1(D-Dobj)2+ w2(W-Wobj)2
なお、w1及びw2は、評価関数Fにおける重みであり、適宜設定すればよい。そして、この評価関数Fの値が最小となるように、例えば、最急降下法や共役勾配法を用いて評価関数Fの極値を与える、設計仕様情報に関する点の組mZ, Vin, mpl, doutを決定する。このようにシミュレータの機能を用いて設計仕様情報の算出が上記算出部205によって行われると、実施例1で示した算出マップを用いて設計仕様情報を算出する場合と比べて、一般にはその算出精度を向上させることができる。
図9に、設計システム200の変形例を示す。本変形例では、図7に示した制御部200cの機能及び算出マップ記憶部200bの機能を、処理サーバ500に集約させている。そして、各処理装置200a、600、700には、図7に示した入出力部210の機能が残されている。ユーザからの要求は各処理装置200a、600、700に入力され、処理サーバ500に送信される。そして、処理サーバ500は、送信されてきた装置の特定情報及び入力情報に基づいて、その特定された投与装置に対応する設計仕様情報を算出し、それを再び対応する処理装置へ送信する。設計仕様情報が送信されてきた処理装置では、その結果をディスプレイ等を通してユーザに出力する。このように処理サーバで一括して設計仕様情報の算出を行うことで、病院などの大規模な医療現場での投与装置の設計仕様情報の算出が容易となり、ユーザの利便性が向上するものと考えられる。なお、各処理装置200a、600、700と、処理サーバ500との情報伝送は、無線でもよく有線でもよい。
上述の実施の形態には、火薬を動力源とした投与装置に関する設計システム200が開示されているが、火薬を動力源としたその他の投与装置に関しても本発明を適用し、そのための設計システムを構築することが可能である。そのような投与装置としては、火薬を動力源として細胞に生体由来物質を導入する装置であり、そこでも上述の射出圧推移を利用した物質投与を行うことが可能である。そこで、このような投与装置の設計仕様情報を算出するためのシステム構築に、本発明を適用することも可能である。なお、このような投与装置としては、例えば、ヒトに対する再生医療のために、投与対象となる細胞や足場組織・スキャフォールドに培養細胞、幹細胞等を播種するため装置が例示できる。例えば、特開2008-206477号公報に示すように、移植される部位及び再細胞化の目的に応じて当業者が適宜決定し得る細胞、例えば、内皮細胞、内皮前駆細胞、骨髄細胞、前骨芽細胞、軟骨細胞、繊維芽細胞、皮膚細胞、筋肉細胞、肝臓細胞、腎臓細胞、腸管細胞、幹細胞、その他再生医療の分野で考慮されるあらゆる細胞を投与する。
上述の射出圧推移を利用した投与装置として、カテーテル装置が挙げられる。カテーテル装置は、生体内に進入可能なカテーテル部を有しており、その先端部から所望の薬液等を生体に対して投与する装置である。そのカテーテル部の先端部からの薬液投与の構成に関し、本願発明を適用できる。すなわち、カテーテル部が生体の内部に進入している状態において、その先端部から薬液を投与する際に、その薬液の射出圧を上述の本発明の特徴的な射出圧推移となるように制御することで、薬液が投与される対象領域(例えば、心臓や肝臓等の内臓器官)の所定の部位に対して低侵襲の薬液投与が実現できる。このようなカテーテル装置の設計仕様情報を算出するために、本発明の設計システムについて開示された技術思想を適用することが可能である。
本発明の設計システムに関して開示された技術思想は、高エネルギー物質の燃焼エネルギー以外を利用する投与装置に関しても適用可能である。すなわち、本発明の技術思想を利用し、投与液体(投与目的物質)に関連する物質情報、対象領域に関連する領域情報、分布状態に関連する分布情報に基づいて、バネや圧縮ガス等のエネルギーを利用した投与装置の設計仕様情報を算出することも可能である。なお、この場合の設計仕様情報には、投与液体の投与に使用される駆動源であるバネや圧縮ガス等の情報(例えば、バネの圧縮量や圧縮ガスの蓄圧値等)が含まれる。
2・・・・ハウジング
3・・・・シリンジ部
4・・・・プランジャ
5・・・・ピストン
6・・・・投与装置本体
7・・・・駆動部
8・・・・ボタン
9・・・・バッテリ
10・・・・装置組立体
10A、10B・・・・サブ組立体
31・・・・ノズル部
32・・・・充填室
44・・・・ロッド部
53・・・・押圧柱部
54・・・・収容孔
64・・・・貫通孔
71・・・・点火器
200・・・・設計システム
200a、600、700・・・・処理装置
300・・・・センサ
400・・・・準備装置
500・・・・処理サーバ
Claims (9)
- 高エネルギー物質を動力源として投与目的物質を対象領域に投与する投与装置の設計仕様を算出するシステムであって、
前記設計仕様の算出の対象となる前記投与装置を対象投与装置として特定する装置特定部と、
前記対象投与装置において投与される所定の投与目的物質に関連する物質情報を取得する第1取得部と、
前記所定の投与目的物質が投与される所定の対象領域に関連する領域情報を取得する第2取得部と、
前記対象投与装置によって前記所定の投与目的物質が投与された際に前記所定の対象領域での形成が想定される、該所定の投与目的物質の分布状態に関連する分布情報を取得する第3取得部と、
前記第1取得部によって取得された前記物質情報と、前記第2取得部によって取得された前記領域情報と、前記第3取得部によって取得された前記分布情報とに基づいて、前記所定の投与目的物質の投与に使用される前記高エネルギー物質に関連するエネルギー情報を含む、前記対象投与装置の構成に関連する設計仕様情報を算出する算出部と、
を備える、投与装置の設計システム。 - 前記投与装置は、前記投与目的物質を前記対象領域内に導入する導入部を介することなく、該高エネルギー物質を動力源として該投与目的物質を該対象領域に向かって射出し、該対象領域の表層を貫通させることで該対象領域内に該投与目的物質を投与する装置である、
請求項1に記載の投与装置の設計システム。 - 前記所定の対象領域の表層の硬さに関連する所定の物理パラメータを検出する対象領域センサを、更に備え、
前記第2取得部は、前記対象領域センサによって検出された前記所定の物理パラメータを、前記領域情報の少なくとも一部として取得する、
請求項1又は請求項2に記載の投与装置の設計システム。 - 複数種類の前記投与装置のそれぞれに対応した算出マップであって、それぞれの該投与装置における、前記物質情報と前記領域情報と前記分布情報と、前記設計仕様情報との相関を定める算出マップを保持するマップ情報保持部を、更に備え、
前記算出部は、前記マップ情報保持部が保持する算出マップのうち、前記装置特定部によって特定された前記対象投与装置に対応する算出マップに基づいて、前記設計仕様情報を算出する、
請求項1から請求項3の何れか1項に記載の投与装置の設計システム。 - 前記分布情報は、前記対象領域における前記投与目的物質の投与深さに関連する情報と該投与目的物質の広がりに関連する情報の少なくとも一方を含む、
請求項1から請求項4の何れか1項に記載の投与装置の設計システム。 - 請求項1から請求項5の何れか1項に記載の投与装置の設計システムと、
導入部を介することなく、前記高エネルギー物質を動力源として前記投与目的物質を前記対象領域に投与する前記投与装置と、
前記算出部によって算出された前記設計仕様情報に含まれる前記エネルギー情報に従い、前記対象投与装置に対応する、種類及び装填量の高エネルギー物質を準備する準備装置と、
を備える投与システム。 - 高エネルギー物質を動力源として投与目的物質を対象領域に投与する投与装置の設計仕様を算出する方法であって、
前記設計仕様の算出の対象となる前記投与装置を対象投与装置として特定する装置特定ステップと、
前記対象投与装置において投与される所定の投与目的物質に関連する物質情報を取得する第1取得ステップと、
前記所定の投与目的物質が投与される所定の対象領域に関連する領域情報を取得する第2取得ステップと、
前記対象投与装置によって前記所定の投与目的物質が投与された際に前記所定の対象領域での形成が想定される、該所定の投与目的物質の分布状態に関連する分布情報を取得する第3取得ステップと、
前記第1取得ステップで取得された前記物質情報と、前記第2取得ステップで取得された前記領域情報と、前記第3取得ステップで取得された前記分布情報とに基づいて、前記所定の投与目的物質の投与に使用される前記高エネルギー物質に関連するエネルギー情報を含む、前記対象投与装置の構成に関連する設計仕様情報を算出する算出ステップと、
を含む、投与装置の設計方法。 - 高エネルギー物質を動力源として投与目的物質を対象領域に投与する投与装置の設計仕様を、処理装置に算出させるプログラムであって、
前記処理装置に、
前記設計仕様の算出の対象となる前記投与装置を対象投与装置として特定する装置特定ステップと、
前記対象投与装置において投与される所定の投与目的物質に関連する物質情報を取得する第1取得ステップと、
前記所定の投与目的物質が投与される所定の対象領域に関連する領域情報を取得する第2取得ステップと、
前記対象投与装置によって前記所定の投与目的物質が投与された際に前記所定の対象領域での形成が想定される、該所定の投与目的物質の分布状態に関連する分布情報を取得する第3取得ステップと、
前記第1取得ステップで取得された前記物質情報と、前記第2取得ステップで取得された前記領域情報と、前記第3取得ステップで取得された前記分布情報とに基づいて、前記所定の投与目的物質の投与に使用される前記高エネルギー物質に関連するエネルギー情報を含む、前記対象投与装置の構成に関連する設計仕様情報を算出する算出ステップと、
を実行させる、投与装置の設計プログラム。 - 高エネルギー物質を動力源として対象領域に対して所定の医療動作を行う医療装置の設計仕様を算出するシステムであって、
前記設計仕様の算出の対象となる前記医療装置を対象医療装置として特定する装置特定部と、
前記対象医療装置において行われる前記所定の医療動作に関連する動作情報を取得する第1取得部と、
前記所定の医療動作が行われる所定の対象領域に関連する領域情報を取得する第2取得部と、
前記対象医療装置によって前記所定の医療動作が行われた際に前記所定の対象領域で想定される、該所定の対象領域の変化に関連する変化情報を取得する第3取得部と、
前記第1取得部によって取得された前記動作情報と、前記第2取得部によって取得された前記領域情報と、前記第3取得部によって取得された前記変化情報とに基づいて、前記所定の医療動作に使用される前記高エネルギー物質に関連するエネルギー情報を含む、前記対象医療装置の構成に関連する設計仕様情報を算出する算出部と、
を備える、医療装置の設計システム。
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WO2022102244A1 (ja) * | 2020-11-11 | 2022-05-19 | 株式会社ダイセル | 無針注射器用装置組立体 |
Also Published As
Publication number | Publication date |
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US20180369484A1 (en) | 2018-12-27 |
US10905828B2 (en) | 2021-02-02 |
JP6791484B2 (ja) | 2020-11-25 |
IL260339A (en) | 2019-01-31 |
EP3398633A1 (en) | 2018-11-07 |
CN108472451A (zh) | 2018-08-31 |
CN108472451B (zh) | 2021-11-26 |
EP3398633A4 (en) | 2019-08-28 |
JPWO2017115867A1 (ja) | 2018-11-01 |
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