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91 results about "Anal sphincter" patented technology

Method and apparatus for locating and tracking persons

The invention relates to a method and apparatus for locating and tracking persons by use of an implantable device. The described invention is an implant able device composed of biocompatible materials in all areas where contact with organic tissue occurs. The gross anatomic siting of the device includes any limb, the torso, including back and perineum, the neck, and the head. The surgical anatomic siting of the device includes: (1) Supramuscular: for example, deep to the epidermis, dermis, and subcutaneous fat, on or attached to muscle and / or muscle fascia. Such a location is currently used for implantation of commercially available buried intravenous access ports, which are positioned on, and attached to, the pectoralis major muscle fascia; (2) Intramuscular: for example, within or between the muscles of a limb; (3) Submuscular: for example, deep to a large muscle. Such a location is currently used for implantation of commercially available artificial urethral and anal sphincter reservoirs, which are positioned deep to the rectus abdominus muscles, within the pre-peritoneal Space of Retzius; (4) Intraluminal: for example, within the lumen of an organ which has a naturally occurring orifice. Such a location is currently used for implantation of commercially available ingested video endoscopy capsule devices, i.e. gastrointestinal tract lumen, and intrauterine contraceptive devices, i.e. uterus lumen; and (5) Intracavitary: for example, intrathoracic or intraperitoneal. Such an intraperitoneal location is currently used for implantation of commercially available intraperitoneal dialysis catheters.
Owner:PERSEPHONE

Electromagnetic-controlled artificial anal sphincter apparatus based on rectum sensing function

The invention relates to an electromagnetic-controlled artificial anal sphincter apparatus based on a rectum sensing function. The electromagnetic-controlled artificial anal sphincter apparatus comprises a hinge-shaped mechanism which is composed of a first pressing plate and a second pressing plate, a DC (Direct Current) pushing-pulling electromagnet, an arc closing mechanism, a small-size sliding block and two pressure sensors; at a left side, the first pressing plate and the second pressing plate are hinged through a hinge to form a transmission pair; the electromagnet is fixed on the second pressing plate; a pushing rod in the electromagnet penetrates through a small hole of the second pressing plate and is connected with the first pressing plate through the sliding block; the arc closing mechanism is fixed at tail ends of the two pressing plates; meanwhile, two flexible baffle plates are fixed at a left side and a right side of the arc closing mechanism. The electromagnetic-controlled artificial anal sphincter apparatus is arranged in the body of a patient, and a function as an anal sphincter can be played; the pressure sensor is used for sensing pressure in rectum and analyzing amount of human excrement, and then judging whether the electromagnet is electrified or not, so that opening or closing of an artificial anal sphincter can be directly controlled. The apparatus has the advantages of simple design, convenience in manufacturing and simpleness in operation.
Owner:SHANGHAI UNIV

In-situ implanted bionic anal sphincter system based on defecation intention function reconstruction

ActiveCN112169171AActivate neural pathwaysActivates the bowel reflex neural pathwayElectrotherapyLigamentsPelvic nerveArtificial anus
Disclosed is an in-situ implantation bionic anal sphincter system based on defecation intention function reconstruction. The in-situ implantation bionic anal sphincter system comprises an artificial anal sphincter module, a sensing detection and conversion module, a pelvic nerve stimulation module, an in-vitro control module and an in-vitro energy supply module, wherein the artificial anal sphincter module transmits a pressure signal acquired in vivo to the sensing detection and conversion module to generate an electrical stimulation intensity signal and generates a stimulation electrical signal with corresponding intensity through the pelvic nerve stimulation module to stimulate pelvic nerves; the in-vitro energy supply module is connected with the artificial anal sphincter module and supplies energy to the artificial anal sphincter module; and the in-vitro control module is connected with the artificial anal sphincter module so that a wearer can control defecation by himself/herself.The system has a man-machine interface and a control function, the amount of excrement in rectum or anal canal is detected through the sensing detection and conversion module, and an electric signalwith corresponding intensity is constructed based on detection information to stimulate pelvic nerves so as to activate the whole defecation reflex nerve pathway of the wearer, so that defecation intention perception function reconstruction is truly formed.
Owner:SHANGHAI JIAO TONG UNIV

Mechanical artificial anal sphincter device capable of achieving constant-force clamping

The invention relates to a mechanical artificial anal sphincter device capable of realizing constant-force clamping, which comprises an upper fixed top plate, a lower fixed bottom plate, a pair of transmission guide rods, a clamping mechanism, a constant-force mechanism and a transmission mechanism, a pair of transmission guide rods is vertically arranged between the upper fixing top plate and the lower fixing bottom plate at intervals, the clamping mechanism comprises an upper gripper and a lower gripper which are arranged up and down respectively, a channel which is used for containing intestinal canals and is adjustable in size is formed between the upper gripper and the lower gripper, and the constant force mechanism comprises an upper push plate, a lower push plate and paired shape memory alloy plates. The upper push plate and the lower push plate are movably arranged on the transmission guide rod up and down in the length direction of the transmission guide rod, the upper gripper is fixed to the bottom of the lower push plate, and the transmission mechanism is in transmission connection with the upper push plate. Compared with the prior art, constant-force clamping of the intestinal canal tissue by the clamping mechanism is achieved, and the problem of avascular necrosis of the intestinal canal tissue caused by mechanical mismatching of sphincter and the intestinal canal tissue is solved.
Owner:UNIV OF SHANGHAI FOR SCI & TECH

Three-ring bionic artificial anal sphincter protective sleeve for preventing tissues from proliferating inwards

The invention relates to a three-ring bionic artificial anal sphincter protective sleeve for preventing tissues from proliferating inwards. The three-ring bionic artificial anal sphincter protective sleeve comprises an outer shell matched with a three-ring bionic artificial anus, two silica gel films and an elastic rope, wherein one sides of the two silica gel films are connected through the elastic rope, and the other sides of the two silica gel films are respectively attached to the inner sides of an upper ring and a lower ring of the three-ring bionic artificial anus through pressing sheets. The three-ring bionic anal sphincter protective sleeve is simple in overall structure, small in size, light in weight and good in sealing performance, the contact surface between an external intestinal tract and the inner part of the three-ring bionic anal sphincter prosthesis can be effectively reduced, and the problems that external tissue is proliferated and wrapped inwards, and intestinal obstruction is caused when the intestinal tract falls into the prosthesis through two ends of a port are solved; and a relatively independent closed space is formed in the prosthesis, the phenomenon that a middle ring swing arm cannot reach a specified clamping position due to tissue proliferation and intestinal obstruction is relieved, and the service life of the prosthesis is prolonged.
Owner:SHANGHAI JIAO TONG UNIV
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