The purpose of the present invention is to provide a novel space debris removal system. The present invention is a space debris removal system comprising: a projectile and a space debris removal device that removes space debris by projecting a projectile. The space debris removal device comprises a projecting unit that projects the projectile. The projecting unit projects the projectile using the emission pressure created when a compressed gas is emitted.
The objective of the present invention is to provide a novel space debris removal system. This space debris removal system comprises a space debris removal device for removing space debris by projecting a projectile, and said projectile, wherein the space debris removal device includes a projecting unit for projecting the projectile, and the projecting unit projects the projectile by utilizing a magnetic field generated by passing an electric current through a coil.
αβγγ (M is an alkali metal atom or an alkaline earth metal atom, α is any integer of 1-4, β is any integer of 1-8, γ is any integer of 1-13, and α, β, and γ may each be the same or different) is stirred, and a hydrogen gas supply means that supplies hydrogen gas to the stirring tank.
C01B 6/21 - Preparation of borohydrides of alkali metals, alkaline earth metals, magnesium or berylliumAddition complexes thereof, e.g. LiBH4.2N2H4, NaB2H7
B01F 29/64 - Mixers with rotating receptacles rotating about a horizontal or inclined axis, e.g. drum mixers with stirring devices moving in relation to the receptacle, e.g. rotating
B01F 31/00 - Mixers with shaking, oscillating, or vibrating mechanisms
B01F 35/12 - Maintenance of mixers using mechanical means
An object of the present invention is to provide a capture device enabling capture of a target to be captured without direction contact with the target to be captured.
A capture device for capturing a target with a wire includes: a casing that holds a cartridge detachably; and a launch unit that launches a wire stored in the cartridge, the wire having an end portion provided with a weight and another end portion provided with a weight, in which the launch unit launches the wire with a magnetic field generated by a flow of current through a coil.
The present invention provides a simply constructed device for performing coping training when a cerebral aneurysm has ruptured during an operation. This coping training device 2 for intraoperative cerebral aneurysm rupture is provided with: a cerebral model 4 which includes at least a portion 12 of a frontal lobe and at least a portion 14 of a temporal lobe, a lateral sulcus 20 being formed between at least the portion 12 of the frontal lobe and at least the portion 14 of the temporal lobe; a cerebral dura mater model 6 which has an opening 24, the cerebral model 4 being housed therein through the opening 24, and the lateral sulcus 20 of the cerebral model 4 being exposed through the opening 24; a blood vessel model 8 with a cerebral aneurysm 28 which is disposed to be attachable to and detachable from the lateral sulcus 20; and a liquid supply means 10 for supplying liquid to the blood vessel model 8.
Provided is a device for carrying out training for endoscopic endonasal skull base surgery. A training device 2 for endoscopic endonasal skull base surgery is constituted of a human head model 4 and a liquid circulation means 6. The human head model 4 is provided with a front part 8 that includes a nose part 16 in which nostrils 16a are formed and a main part 40 that includes at least part of a nasal septum 44, at least part of a nasal cavity lateral wall 42, at least part of a sphenoidal sinus posterior wall 66, and at least part of an internal carotid artery 72. The liquid circulation means 6 is provided with: a retention tank 102 for retaining a nontransparent colored liquid; a supply flow path 104 disposed between the retention tank 102 and the at least part of an internal carotid artery 72; a return flow path 106 disposed between the at least part of an internal carotid artery 72 and the retention tank 102; and a circulating pump 108 for circulating the liquid in the retention tank 102 through the supply flow path 104, the at least part of an internal carotid artery 72, and the return flow path 106.
There are provided a surgical jig (24) which is directly used during surgery to make it possible to accurately recognize a position where a recess (44, 46) is to be formed in the surface of a surgical target bone (14) of a patient; and a verification jig (34) which is directly used during surgery to make it possible to precisely verify whether or not the recess (44, 46) formed in the surface of the surgical targeted bone (14) of the patient is of a required shape.
The surgical jig (24) has an inner surface (26) matching the surface shape of the surgical target bone (14) of the patient, and a penetrating opening (30, 32) formed in correspondence with a site where the recess (44, 46) is to be formed. The verification jig (34) has a protrusion (40, 42) protruding from an inner surface (36) thereof in correspondence with the recess (44, 46) to be formed.
A61F 11/00 - Methods or devices for treatment of the ears or hearing sense Non-electric hearing aidsMethods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing senseProtective devices for the ears, carried on the body or in the hand
G05B 15/02 - Systems controlled by a computer electric
A61B 34/10 - Computer-aided planning, simulation or modelling of surgical operations
A61B 17/00 - Surgical instruments, devices or methods
9.
Bone fixing screw template and method for producing same
A bone fixing screw template is a combination of: a template body (A) integrally constituted by a fitting section (1), which has an inner surface joining and fitting face-to-face to a three-dimensional-shaped surface of a bone region, and a cylindrical spacer tube guide cylinder (2) protruding while being pointed in a direction coaxial with the direction of insertion of the fitting section and a medical screw; and a cylindrical spacer tube (B) sliding in contact with the inner wall of the cylindrical spacer tube guide cylinder (2), the inner diameter of the cylindrical spacer tube (B) being formed to allow a drill to be slidable in the cylindrical spacer tube (B). By using the template, surgery requiring proficiency in fixing the bone region by tightening medical screws can be performed reliably and easily.
Provided is a surgical instrument (24) which is directly used during surgery and makes it possible to accurately verify the locations in which recesses (44, 46) are to be formed in the surface of a bone (14) of a patient on which surgery is to be performed. Further provided is a verification instrument (34) which is also directly used during surgery and makes it possible to precisely verify whether the recesses (44, 46) formed in the surface of the bone (14) of the patient on which surgery is to be performed are the necessary shape or not. The surgical instrument (24) has an inner surface (26) which matches the surface shape of the bone (14) of the patient on which surgery is to be performed, and has through-openings (30, 32) formed so as to correspond to the locations in which the recesses (44, 46) are to be formed. The verification instrument (34) has projections (40, 42) which project from an inner surface (36) and correspond to the recesses (44, 46) to be formed.
Provided are a cranial deformation correction helmet (2), whereby it is possible for a shell (4) to be of sufficiently light weight while retaining necessary rigidity and hardness, and a method whereby it is possible to create the cranial deformation correction helmet (2) with sufficient speed and low cost. A non-cellular composite resin shell (4) is molded by selective laser sintering, and a cellular composite resin liner (6) is thereafter disposed upon the inner face of the shell (4). The relative density of the shell (4) is 90-98%.
This bone-affixing screw template is a combination of: a template main body (A) integrally configured from a fitting section (1), which has an inner surface that joins/fits to the 3D shaped surface of a bone, and a protruding-cylindrical spacer tube guide cylinder (2), which is faced in a coaxial direction with the direction of insertion of medical screws and the fitting section; and a cylindrical spacer tube (B) that slides contacting the inside of the cylindrical spacer tube guide cylinder (2). The inner diameter of the cylindrical spacer tube (B) is formed to an inner diameter such that the sliding of a drill is possible. By means of using the template, surgery requiring proficiency in affixing bone by means of fastening medical screws can be performed reliably and easily.
This method for manufacturing a registration template involves: manufacturing a registration template having three or more registration points having a surface that precisely bonds to the surface of a bone at a site subject to surgery from three-dimensional surface data that precisely bonds to the surface of the bone of a patient at the site subject to surgery, on the basis of three-dimensional surface data created from tomography information regarding the bone of the patient at the site subject to surgery; and using the registration template for medical navigation system surgery, which is characterized in that a pedestal (4) for attaching an optical tracking ball (7) used for 3D position detection for a medical navigation system is disposed at the center of the registration points. Using a template having curved surfaces that precisely and firmly adhere in a three-dimensional manner to the surface of a patient's bone enables high-precision registration, reduces the pre-operative efforts of an operator in an operating room, and reduces surgery time.
A61B 19/00 - Instruments, implements or accessories for surgery or diagnosis not covered by any of the groups A61B 1/00-A61B 18/00, e.g. for stereotaxis, sterile operation, luxation treatment, wound edge protectors(protective face masks A41D 13/11; surgeons' or patients' gowns or dresses A41D 13/12; devices for carrying-off, for treatment of, or for carrying-over, body liquids A61M 1/00)
A61B 17/56 - Surgical instruments or methods for treatment of bones or jointsDevices specially adapted therefor
[Problem] Conventional vertical shaft windmills struggled to obtain good rotation starting properties, because drag operated more strongly than lift force in low wind regions. The purpose of the present invention is to provide a vertical shaft windmill capable of efficient rotation even in low wind regions. [Solution] In order to solve said issue, the present invention provides a vertical shaft windmill comprising a cylindrical rotating shaft and a plurality of blades supported by the cylindrical rotating shaft via a blade supporting arm. The interval between the blades and the cylindrical rotating shaft is at or below the length of the blades in the vertical direction.
[Problem] Conventional vertical shaft windmills had the issue of blade rotation speed becoming too fast in high wind speed areas, causing malfunctions and damage to blades, the shaft, and generators, etc. The purpose of the present invention is to provide a vertical shaft windmill capable of suppressing blade rotation speed such that the blade rotation speed does not become too high in high wind speed areas. [Solution] In order to solve said issue, the present invention provides a vertical shaft windmill comprising a cylindrical rotating shaft and a plurality of blades supported by the cylindrical rotating shaft via a blade supporting arm. The sum of the lengths of the plurality of blades in the rotating direction is 20%-40% of the length of the circumference trajectory of the blades.
Disclosed is an instrument for treating a patient with semicircular canal injury, which is an instrument in the form of an exact enlarged model of human three semicircular canals having a structure wherein a liquid and a plurality of otolithic models, having a specific gravity larger than the specific gravity of said liquid, are enclosed within a hollow annular member made of a transparent resin and equipped with a screen at the position corresponding to the cupula in each of the three semicircular canals. Therein, said screen has such a mesh size as allowing the passage of said liquid but not allowing the passage of the otolithic models. Thus, an instrument for treating a patient with semicircular canal injury, whereby physical and mental pains can be alleviated in treating a patient with semicircular canal injury such as benign paroxysmal positional vertigo, is provided.
A61M 21/00 - Other devices or methods to cause a change in the state of consciousnessDevices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
G01C 9/18 - Measuring inclination, e.g. by clinometers, by levels by using liquids
A61B 5/11 - Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
40 - Treatment of materials; recycling, air and water treatment,
Goods & Services
Laboratory apparatus for scientific research; laboratory apparatus [other than for medical use]; laboratory articles [other than for medical use]; laboratory instruments [other than for medical use]; teaching apparatus and instruments; laboratory apparatus and instruments for medical training. Artificial bones; medical apparatus and instruments; artificial bone materials; artificial tympanic membranes; Implant materials [prosthesis] for use in surgery; implants consisting of artificial materials; bone implants composed of artificial materials. Treatment of materials, in particular processing of artificial bones and processing of medical materials; custom manufacture, in particular of medical apparatus and instruments; assembling of materials (custom) for others.
Provided are: a screw guide template (20) and a screw guide template system which enable a hole to be drilled at an accurate position and in an accurate direction in a member (30) to be drilled; a drilling method which enables a hole to be drilled at an accurate position and in an accurate direction in a member to be drilled; and a spinal fusion method which can insert a spinal fixation screw in an accurate position and in an accurate direction. The screw guide template (20) is provided with: a close contact surface (21) which is brought into close contact with the member to be drilled; and a through-hole (22) having one opening (23a) in the close contact surface. The close contact surface has a shape having a male-female relationship with the shape (31) of the surface including a portion (32) of the member to be drilled, the portion (32) being that in which drilling is to be performed. When the close contact surface is brought into close contact with the portion (32) of the member to be drilled in which drilling is to be performed, the opening and the portion (32) of the member to be drilled are superposed on each other to cause the through-hole to be coaxial with a hole to be drilled by the drilling means.
Disclosed is an instrument for treating a patient with semicircular canal injury, which is an exact enlargement of human three semicircular canals having a structure wherein a liquid and a plurality of otolithic models, having a specific gravity larger than the specific gravity of said liquid, are enclosed within a hollow annular member that comprises a transparent resin and is equipped with a screen at the position corresponding to the cupula in each of the three semicircular canals. Therein, said screen has such a mesh size as allowing the passage of said liquid but not allowing the passage of the otolithic models. Thus, an instrument for treating a patient with semicircular canal injury, whereby physical and mental pains can be alleviated in treating a patient with semicircular canal injury such as benign paroxysmal positional vertigo, is provided.
A61F 11/00 - Methods or devices for treatment of the ears or hearing sense Non-electric hearing aidsMethods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing senseProtective devices for the ears, carried on the body or in the hand
20.
METHOD OF PRODUCING FLEXIBLE VESSEL MODEL FOR SIMULATING SURGICAL OPERATION
A method of producing a flexible vessel model for simulating a surgical operation, which is a three-dimensional model being capable of reproducing an aneurysm or narrowing occurring in the artery or vein based on CT/MRI image data of a patient obtained in practice and thus allowing vascular therapy trainings and preoperative simulations, with the use of a precise lamination modeling machine, wherein a vascular model having an affected part is fabricated by using a lamination technique together with a supporting member for sustaining the shape of the three-dimensional model during the fabrication in the precise lamination modeling machine and, after the completion of the fabrication by the lamination technique, the supporting member is removed. Thus, it is possible to provide a three-dimensional vascular model whereby the shape of an aneurysm or narrowing occurring in the artery or vein, which is to be used in preoperative simulation of vascular therapy for the artery or vein, can be reproduced with the use of a flexible polymer model and thus vascular therapy trainings and preoperative simulations can be carried out by using the same.
G09B 23/28 - Models for scientific, medical, or mathematical purposes, e.g. full-sized device for demonstration purposes for medicine
A61B 19/00 - Instruments, implements or accessories for surgery or diagnosis not covered by any of the groups A61B 1/00-A61B 18/00, e.g. for stereotaxis, sterile operation, luxation treatment, wound edge protectors(protective face masks A41D 13/11; surgeons' or patients' gowns or dresses A41D 13/12; devices for carrying-off, for treatment of, or for carrying-over, body liquids A61M 1/00)
21.
METHOD OF ASBESTOS DEGRADATION AND ASBESTOS DEGRADATION APPARATUS
NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY (Japan)
Inventor
Kakegawa, Hisao
Suenaga, Yoshihiro
Tanaka, Yasuhiro
Kakinuma, Shuzo
Takanashi, Hitoshi
Abstract
Untreated asbestos substance and water are placed in reaction vessel (2). Subsequently, hydrofluoric acid is injected, and agitated while pulverizing the asbestos substance to thereby attain degradation of the asbestos by hydrofluoric acid. After the execution of degradation processing, the resultant reaction mixture is loaded with a fluoride ion adsorbent and a metal ion adsorbent. Thereafter, a neutralizing agent is added, and under agitation, neutralization is effected. Further, a coagulant is added, thereby obtaining aggregates. As the asbestos is converted by hydrogen fluoride into hexafluorosilicic acid (salt) and magnesium fluoride, the asbestos is completely eliminated and becomes nonasbestos inorganic substances, thereby attaining detoxification to human health. As the ion adsorption, neutralization and coagulation steps of the reaction mixture resulting from the chemical degradation of asbestos can be performed in hermetically sealed reaction vessel (2), safety can be ensured. As batch operation can be made by the use of the reaction vessel (2), large-volume processing can be realized.
