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.

There is disclosed a method for treating anal incontinence in women. The method comprises accessing the rectum or colon or anus though an incision in the vagina and implanting a powered restriction device on the rectum, colon or anal sphincter. There are also disclosed methods for energizing and controlling the restriction device.

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.

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 present invention relates to a seating apparatus for the diagnosis and treatment, and more particularly, to a seating apparatus for diagnosis and treatment of diagnosing and curing urinary incontinence, erectile dysfunction and defecation disorders which enables to diagnose symptoms of urinary incontinence, erectile dysfunction and defecation disorders by measuring contraction pressure and contraction duration of pelvic floor muscles, muscles of perineum and anal sphincters of a user, who puts on cloth while seated, simultaneously with curing symptoms of urinary incontinence, erectile dysfunction and defecation disorders throughout biofeedback exercise and training.

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 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.

A uniformly-transmitting pressure sensor used for an artificial anal sphincter system and in the technical field of medical instruments comprises a closed cavity formed by a hemispheric wrapping layer and a fixing plate, a sensor bare chip arranged inside the closed cavity, and a liquid or gaseous medium used for uniformly transmitting pressure. The sensor bare chip is fixedly arranged on the inner side of the fixing plate, a signal leading-out welding pad is arranged on the outer side of the fixing plate correspondingly, and a micro circuit board is arranged on the fixing plate and comprises a bridge-type compensation circuit which is connected with the sensor bare chip. The uniformly-transmitting pressure sensor is mainly applied to elastic scaling-type artificial anal sphincter prostheses, finger-lock-type artificial anal sphincter prostheses and the like and is suitable for implanted systems which need to contact with intestinal walls to collect pressure, uniform transmitting of pressure value is realized, measuring effect of the pressure sensor is improved, and effective measuring of biotic pressure signals in-vivo intestinal tracts in complex intestinal tract environment is realized.

The transvaginal tactile probe is configured to obtain a high resolution mapping of pressures and strains within the vagina of a pregnant woman prior to birth. The device provides real-time data visualization, analysis tools and information. This data may be used to assist with clinical decisions regarding selecting a preferred method of prevention of severe childbirth injury or altering delivery management, e.g. early induction at term, elective caesarean section in patients with a history of obstetric anal sphincter injury, water-birth, warm compresses to the perineum. The device is intended for use by medically trained personnel who counsels patients regarding risk of severe trauma at childbirth (such as urogynecologists and obstetricians) and regarding the effect of perineal massage and childbirth training device (such as physical therapists).

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.

The invention discloses an anus stretching device base. The anus stretching device base comprises a hollow body and an externally stretched wide edge, wherein the wide edge is connected with the near end of the body. The anus stretching device base is characterized in that: a first opening which can be opened or closed selectively penetrates the body; a second opening which also can be opened or closed selectively penetrates the wide edge; and the first opening is communicated with the second opening. The anus stretching device base can gradually and controllably stretch the anus and the anal tube of a patient and can adapt the anal sphincter to the amplitude stretched by the anus stretching device base before the anus stretching device base is inserted so as to prevent anal fissure and relieve the pain of the patient. At the same time, in the anus stretching device base, pre-anus stretching and anus stretching are integrally designed, so that the product is more easy and convenient to use. The anus stretching device base can be widely applied to surgical operations.

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.

A nozzle assembly for enema kit includes an extension tube curved in a predetermined manner, and a plug body connected at a proximal end to a first end of the extension tube. The plug body has a distal end formed into a nozzle, which has a predetermined short length and is provided at a front end with a plurality of nozzle apertures, and includes a rearward flared cup portion. When a user uses the enema kit to do colonic hydrotherapy with the nozzle introduced through the user's anal sphincter, water is supplied to the nozzle assembly and jetted into the user's anus. A rearward flared cup portion is formed behind the nozzle to press against the user's butt, preventing the nozzle from moving too deep into the user's anus, making the enema kit comfortable and safe for use by a non professional person.

Disclosed is a wireless energy transmission device for an artificial anal sphincter. The wireless energy transmission device is characterized by comprising a wireless energy emission module located in vitro and a sphincter execution module located in vivo and provided with a wireless energy receiving module, wherein the wireless energy emission module comprises an inverter circuit and an energy emission coil, and the wireless energy receiving module comprises an energy receiving coil, a compensation capacitor and a rectification and filter circuit. Magnetic resistance between coils is lowered to some extent, and energy transmission efficiency is improved.

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 provides a multifunctional breathable pipe which is convenient for exhausting gas inside the anus of a patient after anorectal surgery and for hemostasis by pressure. The breathable pipe comprises a breathable pipe body, the front end of which is provided with a mushroom-shaped head which is provided with a plurality of breathable holes; the rear end of the breathable pipe body is provided with a horn-shaped tail; the external side of the breathable pipe body is also sleeved with a water-absorbing sleeve; the breathable pipe has the advantages that the multifunctional breathable pipe is convenient for use, is not easy to be blocked, is convenient for exhausting the gas inside the anus of the patient, has simple operation and good pressure fixing effect, is not easy to fall off, is easy to be taken out, lightens the local foreign matter feeling caused by the contraction of anal sphincter after anesthetic period passes, and lightens the pain of the patient; simultaneously, the multifunctional breathable pipe reduces the use of analgesic agent, prevents the complications such as dropsy, bleeding, expansion and the like, and improves the sleeping quality of the patient.

The invention relates to a biofeedback therapy method, and relates to the field of intelligent medical treatment. The problem that patients are not motivated in the actual training process, so that the actual treatment effect is general due to the fact that a conventional biofeedback therapy method is boring is solved. The biofeedback therapy method includes the following steps that S100, pressureinformation of the anal sphincter and rectal smooth muscle of a patient is obtained; and S200, the collected pressure information of the anal sphincter and the rectal smooth muscle of the patient iscompared with the anal sphincter pressure information and the rectal smooth muscle pressure information in the preset health range separately, and if the pressure information of the anal sphincter andthe rectal smooth muscle of the patient is out of the preset health pressure information range, a smooth muscle game training mechanism is established to train the anal sphincter and the rectal smooth muscle of the patient in a simulating mode. According to the biofeedback therapy method, a game mechanism and the biological feedback therapeutic method are effectively combined to greatly improve the efficiency of treatment of functional abnormal defecation of the patient.

The invention relates to equipment for treating laxation of the constrictor by utilizing micro radio-frequency electrode. The equipment comprises a radio-frequency magnetic wave generating and control device (10) and a flexible duct (20) connected with the radio-frequency magnetic wave generating and control device; and the end part of the flexible duct (20) is provided with a radio-frequency electrode (26) of which the diameter is 0.3 mm. With the assistance of an endoscope, the equipment directly acts on the constrictor of a patient through oral cavity, esophagus or urethra. Accurately temperature-controlled radio frequency generates heat energy to cause the destruction and regeneration of the diseased tissue, and induce the contraction and the reconstruction of collagenous tissue; therefore, the constrictor tissue recovers the elasticity. The equipment has the advantages of short consuming time and less pain in therapeutic process, and remarkably treatment effect.

Disclosed are an image processing method and a device of a anal sphincter and an ultrasonic device. The image processing method of the anal sphincter comprises obtaining 3D volume data of an inspector when in an anal contraction state, obtaining a multi-frame section plane image by a multi-plane imaging of the 3D volume data, and identifying the region of the internal anal sphincter and the region of the external anal sphincter in each frame according to a sonographic feature of the anal sphincter. The image processing method and a device of the anal sphincter and an ultrasonic device can recognize the form of the internal and external anal sphincter quickly and accurately.

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.

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.

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.

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.