Patents by Inventor Taichiro Akiyama
Taichiro Akiyama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4413359Abstract: An impermeable laminated membrane, constructed by the superposition of a silicone rubber membrane on a fluoro-rubber membrane, is disclosed.This laminated membrane has an extremely low permeability so that its is effective for implantation into living organisms.Type: GrantFiled: February 26, 1982Date of Patent: November 8, 1983Assignee: Koken Co., Ltd.Inventors: Taichiro Akiyama, Fumio Wada
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Patent number: 4314380Abstract: Artificial bone is prepared from animal bone treated for removal of organics, burned, baked and immersed in atelocollagen solution.Type: GrantFiled: September 26, 1980Date of Patent: February 9, 1982Assignee: Koken Co., Ltd.Inventors: Teruo Miyata, Taichiro Akiyama, Masayasu Furuse
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Patent number: 4215689Abstract: Injecting apparatus comprises means to hold the apparatus against a living body, and a medical liquid in a reservoir of the apparatus is pumped by a pump means which is driven by movement of some portion of the living body, so as to be injected into the living body. The medical liquid may be injected little by little, in which case each cycle of the pump means is effected by a plurality of movements of the living body. The reservoir is made of resilient material, for example, silicone rubber. A modified reservoir comprises an inner bag and an outer bag, with an intermediate space therebetween, which may be filled with a physiological solution of sodium chloride.Type: GrantFiled: July 17, 1978Date of Patent: August 5, 1980Assignee: Koken Co., Ltd.Inventors: Taichiro Akiyama, Fumiyo Mutou
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Patent number: 4209919Abstract: A model of a living body includes a cranium as a main body; and organ components (tongue portion and ear portion) made of yieldable material, arranged on the main body, wherein an external force is applied to one of the organ components from the external of the main body to deform the organ component, and thereby the inside of the organ component can be observed from the external of the main body.Type: GrantFiled: July 17, 1978Date of Patent: July 1, 1980Assignee: Taichiro AkiyamaInventors: Ichiro Kirikae, Taichiro Akiyama
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Patent number: 4137906Abstract: A catheter apparatus with occlusion and flow diverting valve means for controlling the flow of fluid into a tube including a conduit to lead fluid into cylindrical tube, a bag-like member made of resilient material and arranged to close an opening of the top of the conduit, a valve means provided on the conduit and a connecting means to connect the bag-like member and the valve means. Settling this apparatus in the cylindrical tube, when fluid is forced to flow into the bag-like member through the conduit, the bag-like member expands, whereby the cylindrical tube is closed and the valve means is opened to flow fluid out of the conduit.Type: GrantFiled: May 5, 1977Date of Patent: February 6, 1979Assignee: Koken Co., Ltd.Inventors: Taichiro Akiyama, Haruomi Muto
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Patent number: 4133984Abstract: A plug-type hearing device comprising a sound-leading portion being inserted into the auditory miatus, a first envelope attached around the sound-leading portion, a second envelope being positioned at the outside of the auditory miatus and being communicated with the first envelope through a pipe, and a holding means for holding an expanded state of the first envelope when the volume of the latter is increased, wherein the volume of the second envelope is decreased to increase the volume of the first envelope by the pressure of a fluid contained inside, and the expanded first envelope is closely contacted with the wall surface of the auditory miatus.Type: GrantFiled: August 3, 1977Date of Patent: January 9, 1979Assignee: Koken Co., Ltd.Inventor: Taichiro Akiyama
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Patent number: 4102342Abstract: A fluid such as air is tightly enclosed in a chamber which serves to plug an organic passage such as a person's nasal cavity. The fluid is supplied into the chamber through a tube so as elastically to expand the chamber and thereafter is discharged through a valve device comprising an opening formed in the tube and a valve member which normally closes the opening but can be rolled up on itself so that the fluid in the chamber can flow out through the opening.Type: GrantFiled: December 20, 1976Date of Patent: July 25, 1978Assignee: Taichiro AkiyamaInventors: Taichiro Akiyama, Sajiro Ookubo, Setsuko Ueno
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Patent number: 4078305Abstract: A cutting apparatus for a surgical thread which comprises a thread-like body and a plurality of projections formed at regular intervals in the thread-like body. The cutting apparatus includes a holder for the surgical thread through which the surgical thread is inserted, a cutting member arranged adjacent to the holder, an actuating rod for actuating the cutting member, and a trigger for driving the actuating rod. Even when the blood vessel is ligated with the surgical thread in the interior of the human body, the surgical thread can be easily cut by the cutting apparatus in the interior of the human body.Type: GrantFiled: December 17, 1976Date of Patent: March 14, 1978Inventor: Taichiro Akiyama
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Patent number: 4069825Abstract: A surgical thread includes a thread-like body and a plurality of projections formed at regular intervals in the thread-like body. A blood vessel can be simply and surely ligated with the surgical thread. A cutting apparatus for the surgical thread includes a holder for a surgical thread through which the surgical thread is inserted, a cutting member arranged adjacent to the holder, an actuating rod for actuating the cutting member, and a trigger for driving the actuating rod. Even when the blood vessel is ligated with the surgical thread in the interior of the human body, the surgical thread can be easily cut by the cutting apparatus in the interior of the human body.Type: GrantFiled: January 28, 1976Date of Patent: January 24, 1978Inventor: Taichiro Akiyama
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Patent number: 4060080Abstract: A plug for a living body includes a first chamber, a second chamber communicating with the first chamber, a holding means for holding the condition that the volume of the first chamber is reduced and a fluid put into the first and second chambers. The fluid is pressed into the second chamber when the volume of the first chamber is reduced so that the volume of the second chamber is increased. The external auditory miatus can be surely plugged with the plug.Type: GrantFiled: March 15, 1976Date of Patent: November 29, 1977Inventor: Taichiro Akiyama
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Patent number: 3960786Abstract: Granular porous silicone rubbers suitable to form articles to be embedded in human bodies or to be used to make up lost portions thereof are prepared by forming a composition containing a siloxnediole composition expressed by a formula ##EQU1## where R respectively represents a methyl radical, a phenyl radical or a vinyl radical and n is an integer of from 500 to 5,000, at least 0.5 % by weight based on the weight of the compound of formula (1) of a siloxanediol hydride compound expressed by a formula ##EQU2## where R' respectively represents a hydrogen radical or a methyl radical but at least one of R' radicals is a hydrogen radical, and n is an integer of from 2 to 1,000, a vulcanization catalyst and an emulsifying agent. The composition is then dispersed in water and the resulting emulsion is vulcanized while it is stirred thereby forming the granules of porous silicones.Type: GrantFiled: May 30, 1974Date of Patent: June 1, 1976Inventor: Taichiro Akiyama
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Patent number: 3948271Abstract: A drain for the eardrum is formed of a high polymer with the properties of absorbency and swelling. An apparatus for inserting the drain for the eardrum includes a needle with a sharp tip, a tube sheathing the needle and a trigger to project the sharp end of the needle from the end of the tube. When the trigger is drawn, the sharp tip of the needle is extended from the end of the tube and is then inserted into the drain, and used to bore a hole through the eardrum and to insert the drain into the hole.Type: GrantFiled: January 27, 1975Date of Patent: April 6, 1976Inventor: Taichiro Akiyama
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Patent number: 3943091Abstract: In a two part type composition for preparing room temperature vulcanizing type silicone, one part or a main agent comprises a putty like mixture of a siloxanediol expressed by a general formula ##EQU1## WHEREIN R respectively represents a methyl radical, a phenyl radical or a vinyl radical, and n is an intger of from 500 to 50,000 or ##EQU2## WHEREIN R' respectively represents a hydrogen radical or a methyl radical and n is an integer of from 2 to 1,000, and a fine powder of a filler, and the other part or an assistant agent comprises a putty like mixture of a polyol, Ca (OH).sub.2 and a fine powder of a filler. The main and assistant agents are combined in intimate contact with each other in the form of a cencentric assembly or a laminated assembly. Any suitable quantity of the assembly is severed and kneaded by hands to form a silicone rubber.Type: GrantFiled: February 4, 1974Date of Patent: March 9, 1976Inventor: Taichiro Akiyama