91 results about "Anal sphincter" patented technology

The present invention comprises a plurality of injectable hollow particulate fillers suspended in a biocompatible fluid carrier to significantly improve the clumping resistance and injectability of the composition. The hollow particulate fillers have a lower effective density and are able to suspend in the carrier without precipitation. The loss of skin volume as a result of aging, diseases, weight loss, and injury can lead to uneven skin surface (e.g. wrinkle, etc.). The uneven skin can be repaired by injecting appropriate amount of hollow fillers underneath the skin. Some cases of urinary incontinence occur when the resistance to urine flow has decreased excessively. Continence is restored by injecting the present invention to the urethra tissue to increase resistance to urine outflow. Similarly, the present invention allows for the control of gastric fluid reflux by submucosal injections of the fillers to the esophageal-gastric and gastric-pyloric junction. For patients with vesicoureteral reflux, it can be treated by injection of the present invention into patients' ureteral tissue. This invention can also be used to repair defective or inadequately functioning muscles of the anal sphincter by administering an effective amount of injectable hollow fillers into the defect or anal sinuses.

Methods and apparatus for monitoring core temperature of a patient receiving intraperitoneal hypothermia or hyperthermia are provided which may include any number of features. One feature is placing a monitoring device having a sensor into a non-intraperitoneal cavity of a patient. The non-intraperitoneal cavity can be a urethra, a rectum, an anal sphincter, a stomach, an esophagus, the peripheral vasculature, or a vagina, for example. Another feature is sensing core temperature of the patient with the sensor.

The present disclosure involves a method of measuring a physiological feedback from a patient in response to electrical stimulation. A stimulation parameter of a sacral nerve stimulation therapy is ramped up. The sacral nerve stimulation therapy includes electrical pulses generated by a pulse generator based on programming instructions received from an electronic programmer. The electrical pulses are delivered to a patient via a stimulation lead that is implanted in the patient. Via an anal electrode device that is at least partially inserted inside an anal canal of the patient, a compound motor action potential (CMAP) is measured from an anal sphincter of the patient while the stimulation parameter of the sacral nerve stimulation therapy is being ramped up. A stimulation threshold is determined based on the measured CMAP.

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.

The invention consists in a couple of magnets in form of small plaques of variable dimensions and magnetic force, covered by a bio-compatible material, that are positioned by means of a special endoluminal delivery device or by means of a surgical intervention, close to the sphincters that are to be reinforced, with the opposite polarities face to face, so that, attracting to each other, they close the visceral lumen, preventing the reflux or the incontinence.This method may be applied to the lower esophageal sphincter in order to prevent gastroesophageal reflux, to the anal sphincter to prevent fecal incontinence, and to the urethral sphincter to prevent urinary incontinence.

The present invention comprises a plurality of injectable hollow particulate fillers suspended in a biocompatible fluid carrier to significantly improve the clumping resistance and injectability of the composition. The hollow particulate fillers have a lower effective density and are able to suspend in the carrier without precipitation. The loss of skin volume as a result of aging, diseases, weight loss, and injury can lead to uneven skin surface (e.g. wrinkle, etc.). The uneven skin can be repaired by injecting appropriate amount of hollow fillers underneath the skin. Some cases of urinary incontinence occur when the resistance to urine flow has decreased excessively. Continence is restored by injecting the present invention to the urethra tissue to increase resistance to urine outflow. Similarly, the present invention allows for the control of gastric fluid reflux by submucosal injections of the fillers to the esophageal-gastric and gastric-pyloric junction. For patients with vesicoureteral reflux, it can be treated by injection of the present invention into patients' ureteral tissue. This invention can also be used to repair defective or inadequately functioning muscles of the anal sphincter by administering an effective amount of injectable hollow fillers into the defect or anal sinuses.

The present invention provides a device that protects the tissue in the posterior part of the introitus vaginae, i.e. the commissura posterior. The origin of perineal tear starts here when the segment is stretched to double or triple its length during delivery of the head. Tears can be more extensive into the perineal body, continue into the anal sphincter and in worse cases even through the whole perineum into the anal canal. In use the device may protect against perineal tears of the posterior vaginal wall into the mucosa, perineal skin, muscles, even more profound down to the anal sphincter muscle and into the rectum and the rectal mucosa.

A wireless in-vivo charging system based on percutaneous energy transmission and applied to a artificial anal sphincter prosthesis comprises a wireless energy transmitting terminal and a wireless energy receiving terminal, wherein the wireless energy transmitting terminal consists of an inverter circuit and a transmitting coil, and the wireless energy receiving terminal consists of an LC resonance circuit, a rectification filter circuit and a load circuit. The wireless in-vivo charging system is easy to miniaturize, light in mass and convenient to implant and enable a whole artificial anal sphincter system to be humanized.

The invention discloses an artificial anus and a sphincteric device thereof. The artificial anus and the sphincteric device thereof are characterized in that novel intelligent materials are adopted for simulating functional performance of the human body muscle structure, the structural design enables the artificial anus to be similar to a human body anal sphincter from the perspective of bionics, and biological compatible materials such as polydimethylsiloxane (PDMS) and medical silicon rubber are adopted as structure bodies. The artificial anus and the sphincteric device thereof are simple in structure, convenient to manufacture, and capable of achieving the function of the human body anal sphincter through simulation. Moreover, if the artificial anus and the sphincteric device thereof can be popularized, burdens of families and pain of patients can be reduced greatly, and actual application value is high.

The invention provides a corrugated pipe injection type miniature pump for artificial anal sphincter in the technical field of medical instrument. The pump comprises a conduit, a corrugated pipe component, a miniature motor and a telescopic mechanism, wherein two ends of the conduit are connected with a forceps clip capsular bag and the corrugated component respectively; the corrugated pipe component and the telescopic mechanism are movably connected, and the insides of the corrugated pipe component and the telescopic mechanism are communicated; and the miniature motor is connected with the corrugated pipe component and the telescopic mechanism respectively. By being connected with the forceps clip capsular bag, the pump realizes liquid storage and bidirectional fluid discharge between the pump and the forceps clip capsular bag, and can realize pressure maintaining function at any position, so that the functions and the performance of an artificial anal sphincter control system can be improved.

In general, the invention is directed to treatment of fecal incontinence by the implantation of one or more bulking prostheses proximate to an anal sphincter. These bulking prostheses, which may include biocompatible hydrogel, are inserted into the tissue near the anus through a small opening in the mucosa. When inserted, the bulking prostheses are in a miniature state. Upon introduction into the body, the devices enter an enlarged state. In their enlarged state, the bulking prostheses supply extra bulk to the tissues proximate to the anal sphincters. With the extra bulk, the patient can exercise voluntary control over the external sphincter to close the anus and maintain fecal continence.

The invention relates to a micro-peristaltic pump for an artificial anal sphincter system in the technical filed of medical appliances, which comprises a first container, a connecting pipe, a rotating shaft, a motor, a speed reducer, rollers, a second container and a sleeve, wherein the first container is connected with the connecting pipe, and the connecting pipe is connected with the second container by penetrating through the sleeve; the two rollers are symmetrically arranged at the two sides of the motor, and divide the connecting pipe into two parts which are not communicated with each other, and the rollers are connected with the rotating shaft; and the rotating shaft is connected with the motor in a meshed way. The invention realizes the two-way drainage between a clamp sac and a liquid storage sac, and can realize the pressure holding function in any position.

The invention discloses an anus pre-dilator for pre-expanding the anus and an anal canal. The anus pre-dilator comprises a stent, a musculus expanding sheet, a push rod and a connecting rod mechanism, wherein the push rod penetrates the stent and can axially move along the stent; the musculus expanding sheet is connected with the stent through the connecting rod mechanism and can radially move at a far end of the stent; and the connecting rod mechanism makes the axial movement of the push rod along the stent form the radial movement of the musculus expanding sheet at the far end of the stent. The invention has the main advantages that: the anus and the anal canal of a patient can be gradually and controllably expanded, the anal sphincter can adapt to an amplitude capable of being expanded by an anus dilator holder before the anus dilator holder is inserted; therefore, the phenomenon of anal fissure can be avoided, and the pain of the patient is relieved.

The invention discloses an anus expanding device used for expanding the anus and the anal tube. The anus expanding device brings convenience to a doctor for examination or operation and comprises a chassis, a guide rail disc, an expanding rod and a connecting ring. The guide rail disc rotates on the chassis. One end of the expanding rod slides in a guide rail groove. The guide rail groove is designed in an eccentric mode or involute mode, and the other end of the expanding rod is driven to move. The connecting ring is a fixed compression part which can prevent the guide rail disc and the expanding rod from being disengaged. The anus expanding device has the advantages that the anus and the anal tube can be gradually and controllably enlarged in parallel, the anal sphincter can gradually adapt to the enlarging range of the anus expanding device, the anal fissure phenomenon can be avoided, and pains of patients are relieved.

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.