Artificial Anal Sphincter

Artificial Anal Sphincter
To evaluate the outcome of artificial anal sphincter implantation for severe fecal incontinence in 37 consecutive patients operated on in a single institution from 1993 through 2001. Implantation of an artificial anal sphincter is proposed in severe ...
Oct 22, 2025
Definition Artificial sphincter insertion surgery is the implantation of an artificial valve in the genitourinary tract or in the anal canal to restore continence and psychological well being to individuals with urinary or anal sphincter insufficiency that leads to severe urinary or fecal incontinence.
Anal encirclement effectively supplements the anal sphincter, narrowing the anal canal and its barrier function to stool, without altering voluntary control. Since complications are common, and can be serious (fecal impaction, infection, erosion of encirclement through anal canal), modern surgeons prefer to perform colostomy.
Jan 6, 2026
The artificial anal sphincter is designed to imitate the function of normal human intestinal muscles and help patients achieve free bowel control. At present, the artificial anal sphincter has common complications such as infections and mechanical failures.
About artificial anal sphincter implantation Faecal incontinence is the medical term for what happens when a person passes faeces (stools) without the normal amount of control. It can happen as a result of problems with the anal sphincter, which is the ring of muscle that keeps the anus closed. Such problems may be due to sphincter damage, spinal injury or other neurological disorders.
The THD SphinKeeper ® sterile prostheses are inserted between the internal and external anal sphincter by means of the specific Delivery System. Delivery System and Dispenser, in combination with the EAUS Module for verifying the correct positioning of the prosthesis, allows for performing the surgical procedure THD Sphinkeeper ® without the ...
Effectiveness of Anal Sphincter Replacement The anal sphincter replacement procedure has been proven effective in restoring bowel control in many cases of severe fecal incontinence. Studies show that a significant majority of patients experience improved quality of life and reduction of incontinence symptoms after the procedure.
Dec 2, 2024
There also are many treatments options, from behavioral modification to sphincteroplasty to artificial anal sphincter and colostomy. In a society with an aging population, fecal incontinence is an ever-increasing problem and will continue to grow.DiscussionTreatment plans need to be individually tailored for each patient.
Conclusions The soft anal band of AMI (AAS), a new artificial anal sphincter, improves severe anal incontinence, but it must be regarded as a last treatment option to avoid a stoma. Keywords: Fecal incontinence, Prosthetic sphincter, Treatment option Background In adult females, the most frequent cause of fecal incontinence is obstetric trauma [1].
The key issue for the safety and effectiveness of implantable devices is the biomechanical compatibility of implantable devices was proposed. Based on the superelasticity of shape memory alloy, this article proposes a new type of constant force artificial sphincter device, which provides a new direc …
Bitar says that the sphincter he has made wouldn't replace the outer anal sphincter - the one healthy people control voluntarily - but the inner one, which operates involuntarily.
To evaluate the long-term results of implantation of an artificial anal sphincter (AAS) for severe anal incontinence. Implantation of an AAS is one of the options for treatment of anal incontinence when standard operations have failed.
A high morbidity rate occurs with implantation of the artificial anal sphincter, with infection and/or erosion being the most common. Where implantation is successful, patients can expect varying degrees of continence to liquid and flatus.
Sphincteroplasty (SP) is the operation most frequently performed in patients suffering from moderate-to-severe anal incontinence (AI) who do not respond to conservative treatment. Other costly surgeries, such as artificial bowel sphincter (ABS) and electro-stimulated graciloplasty, have been more or less abandoned due to their high morbidity rate.
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Dec 2, 2024
Fecal incontinence is an unresolved problem, which has a serious effect on patients, both physically and psychologically. For patients with severe symptoms, treatment with an artificial anal sphincter could be a potential option to restore ...
Artificial anal sphincter implantation improved the external anal sphincter muscle tension; there was a positive correlation between its increase and the clinical outcome.
An artificial anal sphincter placed into the intersphincteric space is a safe and effective procedure to treat fecal incontinence, even if its mechanism of action has not been fully elucidated.
Evidence-based recommendations on artificial anal sphincter implantation. This involves placing a circular cuff under the skin around the anus. This guidance represents the view of NICE, arrived at after careful consideration of the evidence available. When exercising their judgement, healthcare ...
Oct 30, 2024
Implantation of an artificial anal sphincter is used to treat severe faecal incontinence. In this procedure, a fluid-filled cuff is implanted around the anal canal. Tubing from the cuff is channelled under the skin of the perineum and connected to a control pump placed subcutaneously in the scrotum or labia.
Now, nerve stimulation is the most common. Artificial anal sphincter involves implanting an artificial device (prosthesis) around your anus. It mimics the action of a normal anal muscle. Sacral nerve stimulation implants a small device (a neurotransmitter) under your skin in the area of your upper butt.
Nov 28, 2024
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The most commonly used procedures are transposition of the gracilis muscle, implantation of a silicone or magnetic artificial anal sphincter, antegrade colonic enemas, and creation of a colostomy.
The present review is based on intensive literature searches performed for scientific purposes in 2009 and 2012. In October 2014, the database PubMed was specifically screened using the keywords artificial anal sphincter and artificial bowel sphincter. From 455 hits, the 312 English abstracts of publications in English and German were considered.
The artificial anal sphincter restores continence to solid stool in almost all severely incontinent patients, two-thirds of whom achieve practically normal continence. Quality of life improves significantly. Infection and skin erosion are the cause of the majority of explants. No predictable factors …
The artificial bowel sphincter is an effective treatment for FI in patients with a large anal sphincter defect. Infectious complications are the largest threat necessitating explantation of the device.
The complication rate is low, and short-term functional improvement can be achieved even in severe forms of FI. Migration of implants commonly occurs. Keywords: faecal incontinence, Sphinkeeper, sphincter lesion, artificial anal sphincter, endoanal ultrasound
Early experience with an artificial anal sphincter has demonstrated that continence can be restored with acceptable morbidity in patients with severe fecal incontinence.
Sep 14, 2024
Aim A new artificial anal sphincter placed into the intersphincteric space, SphinKeeper™, has recently been proposed to improve outcomes in the treatment of faecal incontinence (FI). We report our p...
An artificial anal sphincter is a device to help patients with fecal incontinence rebuild the ability to control the excrement through the anus. In this paper, an artificial anal sphincter based on a novel clamping mechanism (AASNCM) is proposed to improve the safety and reliability.
The artificial anal sphincter as treatment for end stage anal incontinence was first described in 1987. Published series concern a total of 42 patients, with a success rate of approximately 80%.
An artificial anal sphincter (AAS) is an implantable device that treats FI by replacing a diseased or damaged anal sphincter, thus allowing the patient's continence to be maintained. Here, we report a novel implantable puborectalis-like artificial anal sphincter (PAAS) that replicates rectal perception and has a low risk of ischemia necrosis.
Current evidence on the safety and efficacy of artificial anal sphincter implantation does not appear adequate for this procedure to be used without special arrangements for consent and for audit or research. Clinicians wishing to undertake artificial anal sphincter implantation should take the ...
PURPOSE: This study was undertaken to evaluate the use of a fully implanted artificial anal sphincter for management of severe fecal incontinence. METHODS: An artificial anal sphincter was implanted in 12 patients who failed conventional management for severe fecal incontinence. Careful patient follow-up was recorded during a mean 58-month follow-up. Patients underwent preoperative and ...
A new artificial anal sphincter, SphinKeeper TM, was devised with the aim to surround the anal canal with specifically designed self-expandable prostheses placed into the intersphincteric space. Here we report the safety data and the short term ultrasound assessment after implantation of this device in patients with FI.
The artificial bowel sphincter is an effective treatment for FI in patients with a large anal sphincter defect. Infectious complications are the largest threat necessitating explantation of the device.
Restoration of continence through restoration of the normal anal sphincter mechanism is a challenge for all colorectal surgeons. The negative quality-of-life impact of fecal incontinence has been a motivation for the development of newer innovative procedures and...
INTRODUCTION: Artificial anal sphincter has been proposed in severe anal incontinence when local treatment is unsuitable or has failed. The outcome after implantation of this newly developed device has not yet been determined. METHODS: Twenty-four consecutive patients (7 men; median age, 44; standard deviation, 18; range, 14-80 years) implanted since May 1996 for a minimum of six months at ...
Abstract. Artificial anal sphincter has gradually become an emerging means of treating anal incontinence. However, most of the systems cannot be implanted in the human body for a long time due to insufficient reliability. Therefore, this paper has designed and improved a novel bionic artificial anal sphincter (BAAS). In order to make it work reliably for a long time, we first optimized and ...
Artificial sphincters (ASs) are used to replace the function of the biological sphincters in case of severe urinary and fecal incontinence (UI and FI), and gastroesophageal reflux disease (GERD).
The implantation of an artificial anal sphincter in a man with severe anal incontinence and myasthenia gravis is described. The prosthesis used, an 'A…
Design of an artificial anal sphincter based on biomechanical compatibility for the treatment of patients with fecal incontinence. An ex vivo experimental system was constructed to verify the effecti...
The idea of using magnets to control the esophago-gastro-intestinal flow of contents dates back almost 20 years, from the first bench experiment in 2003, published in 2006, while the first clinical application at the anal level to prevent fecal incontinence took place in 2010 by means of a device called FENIX magnetic anal sphincter augmentation (MAS). The clinical experiences with MAS ranged ...
In order to improve the reliability and safety of current artificial anal sphincter systems, a novel structure artificial anal sphincter system with rectal perception function, based on pressure sensor module, is proposed in this article.
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Artificial anal sphincter is an innovative method that may treat fecal incontinence, and now has been clinically applied. Areas covered This article will review recent developments in mechanisms and clinical applications of artificial anal sphincter.
Conclusions The soft anal band of AMI (AAS), a new artificial anal sphincter, improves severe anal incontinence, but it must be regarded as a last treatment option to avoid a stoma.
The present review is based on intensive literature searches performed for scientific purposes in 2009 and 2012. In October 2014, the database PubMed was specifically screened using the keywords artificial anal sphincter and artificial bowel sphincter. From 455 hits, the 312 English abstracts of publications in English and German were considered.
Abstract. Anal incontinence, also known as fecal incontinence, refers to the loss of the body's ability to accumulate and control the liquid, solid, and gas contents in the rectum, increasing the frequency of bowel movements. It is a symptom of defecation disorders. The artificial anal sphincter provides a new solution for clinical treatment. In this paper, in order to solve the problem of ...
Thus, both rectal stasis and anal sphincter deficiency can be simultaneously responsible for AI. This paper will deal with the management of AI due to anal sphincter incompetence. Whatever the situation, the possibility of neoplastic disease must be eliminated before considering embarking on interventions for AI.
Over the years, multiple surgical therapies have been suggested and tried including injection of biomaterials into the anal canal, radiofrequency treatment of the anal canal, repair of anal muscle injuries, sacral nerve stimulation, artificial bowel sphincter, muscle transposition to reinforce the anal sphincter, and creation of a stoma.
Artificial anal sphincter provided prolonged and reasonably good functional results in severe incontinence, reproducing an efficient sphincteric mechanism and allowing satisfactory anal occlusion and rectal emptying in approximately 75 percent of cases in this study. The definitive explantation rate …
These procedures aim to inject bio-compatible material (perianal injectable bulking agents, also termed sphincter bulking agents[1] or biomaterial injectables) [2] into the walls of the anal canal, in order to bulk out these tissues.
Artificial urinary sphincter (AUS) surgery has been the gold standard treatment for severe urinary incontinence in men since the 1970s.
Mayo Clinic's minimal-touch protocol for artificial urinary sphincter placement minimizes perineal and abdominal skin exposure to decrease the rate of device infection.
An artificial anal sphincter is a device to help patients with fecal incontinence rebuild the ability to control the excrement through the anus. In this paper, an artificial anal sphincter based on a...
PURPOSE: This study was undertaken to evaluate the technique of artificial sphincter for fecal incontinence, with its complications and risk factors, the functional results, and which variables derived from demographic data, preoperative studies, device characteristics, technical details, perioperative findings, and complications could influence the outcome. METHODS: The Acticon Neosphincter ...
If conservative treatments have been unsuccessful, surgery, such as sphincter repair, may be recommended in patients with severe faecal incontinence. In patients for whom local surgery fails or is inappropriate, other surgical options include sacral nerve stimulation, stimulated graciloplasty (creation of a new sphincter from other suitable muscles) or implantation of an artificial anal ...
Postoperative adjustment of the artificial anal sphincter is easy to accomplish. Patients are able to activate the Soft Anal Band system independently without assistance by another person.
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