摘要:
The invention is directed to a catheter-like system which dwells temporarily or even continuously in the body of a patient and which serves for the closed delivery and/or discharge of odour-intensive substances, wherein the release of foul-smelling substances is reduced to the greatest possible extent by the system wall having a multi-layer structure that incorporates a proportion of barrier materials, and an odour-neutral decompression of gaseous fractions arising in the body and discharged into the system is ensured. The system comprises in particular a structure like a tubular film, by which an internal space to be reached in the body is connected to a container, arranged outside the body, for receiving the respective substances that are to be delivered and/or discharged. At the end positioned inside the body, the tube structure is provided with a retaining and/or sealing balloon element, which secures the system in the body. All of the film-based constituent parts of the system that are arranged outside the body, including the film-like delivering and/or discharging tube structure and the container preferably configured in the form of a bag, incorporate at least one barrier-producing layer of ethylene vinyl alcohol copolymer (EVOH), polyvinylidene chloride (PVDC) and/or polyamide (PA), which is combined with at least one carrier layer made of a robust, mechanically loadable, preferably elastic material, for example polyurethane (PUR). The system moreover ensures a continuous decompression of gaseous constituents from the internal space of the system, by a degassing device which is arranged in a particular manner relative to the delivering and/or discharging lumen and by which the adsorbing or filtering, degassing unit is protected against direct exposure to the substances that are to be delivered and/or discharged.
摘要:
The invention relates to a device for supplying and/or draining substances in a minimally irritating, tissue-compatible manner that is preferably adapted to the movements of the body and its organs, the device comprising a balloon, which can be placed in an interior space of the body and filled from outside the body, which balloon (optionally together with a supplying and/or draining tube or shaft segment that carries the balloon) surrounds a fillable compartment, to which a tube or shaft-like segment is attached which connects the interior space to the body surface; wherein the balloon is produced by blow moulding from a tube blank made of a multilayer film-like material; wherein the tube blank is extruded in multiple layers: wherein, in addition to at least one elastically deformable layer of polyurethane (PUR), at least one non-elastically deformable, odour- and/or media-tight barrier layer of ethylene vinyl alcohol copolymer (EVOH) or of polyvinylidene chloride (PVCD) or of polyamide (PA) or of a thermoplastic polyamide elastomer (TPE-A) is provided in the multi-layer material: and wherein the tube blank that has undergone blow moulding has been extruded in a previous separate method step, such that a ratio, required for the blow moulding process, of crystalline to amorphous material proportions is established in the layer of polyurethane. The invention also relates to a method for producing such a device.
摘要:
A device for carrying out a lavage-like, repetitive supply and draining of a flushing, cleaning or other therapeutically active substance in the context of a return-flow enema, the device comprising: a catheter unit (SK) for receiving and draining feces, which can be permanently placed atraumatically and anorectally; a flushing and collecting bag unit (5, SB) with a combined flushing and collecting function; and a hose unit (4) connecting the catheter unit (SK) to the flushing and collecting bag unit (5, SB), comprising a single-lumen or multi-lumen, film-like, flatly collapsible, hose, and enabling a bidirectional flow communication between the catheter unit (SK) and the flushing and collecting bag unit (5; SB); characterized by at least one throughflow element with a flow-direction-dependent throttle function, providing a large lumen for draining of the patient's intestinal contents into the flushing and collecting bag unit (5; SB), so that shaped stool fractions can be drained, and which facilitates a supply of liquid from the flushing and collecting bag unit (5; SB) towards the patient, but wherein the supply of liquid towards the patient is throttled, so as to be reduced in flow amount or flow speed in relation to the draining of the patient's intestinal contents and thereby reduces the supply of liquid to the patient to a non-irritating amount that is compatible with the patient avoiding painful sensations and/or vegetative responses by an immediate dilation of the patient's colon and/or a triggering of a premature or only partially coordinated defecation reflex.
摘要:
A device for intermittently triggering a coordinated defecation reflex in the rectum or colon of a patient, said device comprising a catheter with an inflexible catheter shaft and a preformed inflatable balloon, the inflatable balloon comprising at least an intrarectal balloon segment having, in an inflated, but unpressurized state of the balloon, a generally spherical or discoid shape and a maximal first radius, and being adapted to be placed intrarectally; wherein the inflatable balloon is fixed onto the catheter shaft only at fixation points located at the ends of the inflatable balloon, wherein both ends of the inflatable balloon taper to a shaft dimension of the catheter shaft supporting the inflatable balloon, with the distal end of the balloon having a tapered second radius; wherein, in an inflated, but unpressurized state of the balloon, the difference between the first radius of the intrarectal balloon segment and the second radius of the distal tapered balloon end is equal to a first difference, and further wherein the first difference is greater than a distance between a distal front side of the catheter and a distal fixation point, where the tapered distal end of the balloon is in contact with the catheter shaft and is fixed thereto; wherein the distal front side of the catheter is at a distalmost extension of the catheter shaft or of a distal tip piece of the catheter shaft; and wherein the inflatable balloon is configured such that when the inflatable balloon is in a pressurized state exceeding 30 mbar, at least a portion of the distal intrarectal balloon segment engages and expands a side wall of the rectum or colon of the patient, whereby to trigger a coordinated defecation reflex in the rectum or colon of the patient.
摘要:
The present invention relates to an apparatus for removing, in a manner that is as odor-free as possible, intestinal gas or other malodorous gases as part of a system for the closed, preferably continuous, removal and/or collection of stools or other strongly odor-forming excretions or secretions from the human or animal body, wherein the stool or the removed excretions or secretions are guided outside the body through a hose-like or tube-like structure which, in addition to an inflow port and an outflow port and a passage region that connects said ports and is intended for the passage of stool or other excretions or secretions, has a branch where intestinal gas or other malodorous gases are separated from the stool or the other excretions or secretions and are conducted through an adsorption and/or filter device to an outlet, wherein at least some regions of the adsorption and/or filter device are spaced apart from the passage region in order to prevent, as far as possible, close contact with the stool or other excretions or secretions flowing through the passage region.
摘要:
A device and a method for a lavage-type introduction of a stool transplant or of another, local or topically effective substance through the anus into the colon of a patient, wherein the substance to be introduced is flushed also into the upper parts of the colon of the patient in a torrent-like manner through correspondingly large-lumen catheters; said device comprises an ano-rectal placed head part remaining inside the patient from the beginning until the end of the application and a system of exchangeable bags, which are connectable to the head part, whereby two different types of bags can be applied, one of which is designed for the cleaning lavage, while the another is designed for the introduction of a substance or a transplant.
摘要:
The invention describes a specific, multilayer tubular film for the manufacture of catheter devices that are usable in the most odor-neutral manner possible. The passage of substances through the film wall may be reduced or avoided by incorporating suitable barrier layers. The delivery of strong-smelling active substances and also the discharge of intensely odorous excretions or secretions may be optimized in a problem-solving manner by proportional layers of EVOH- or PVDC-based materials, for example, in the multilayer film structure. The invention combines these barrier layers with mechanically loadable carrier layers made of polyurethane (PUR), PVC, or also polyamide (PA) or PA-related material layers, for example. The invention describes, among other things, embodiments of catheters having retaining balloon components that are equipped with odor-inhibiting layer portions over the entire intracorporeal and extracorporeal surface of the catheter and that thus provide maximum protection against release of odors. The invention further describes embodiments that are manufacturable in a particularly advantageous manner, with several of the components that make up the catheter being manufactured by simultaneous forming from a single film tube blank.
摘要:
The invention relates to a device for sealing and draining an intestinal outlet, the device comprising an inflatable balloon of a generally toroidal structure, whose two ends extend one inside the other, creating a sealed-off volume inside the balloon, whereby the filling of the volume can be adjusted from outside and a draining lumen radially inside the inner layer of the balloon, the outer layer of the tube comprising a radially expanded intra-rectal device which is placed inside the rectum or the intestine of a patient during use, and comprising a trans-anal device which extends through the anus of the patient or his abdominal wall, and a stiffening sleeve element positioned inside the draining lumen of the device, keeping the lumen open and facilitating the uptake and passage of feces through the intra-rectal segment of the draining lumen.
摘要:
A device for sealing a colon, and for removing stool therefrom by irrigation, comprising an expandable intrarectal balloon segment formed from an everted tube with two ends, for insertion into the rectum to anchor the device, and a tapered transanal segment adapted to remain at least partially outside the rectum during use, wherein the balloon segment and the transanal segment have no common compartment, wherein both segments comprise drainage parts with a drainage lumen for irrigation of stool from the patient, wherein one of the two ends of the everted tube is passed through the lumen of the intrarectal balloon segment as an inner layer, the inner layer being in contact with a funnel element, and wherein the transanal segment is adapted to collapse upon resting of the sphincter, and comprises part of the intrarectal balloon segment, or a different balloon element.
摘要:
The invention relates to a method for leak-minimized emptying of stool from the rectum of a patient and/or for providing leak-minimized access to the rectum for the infusion of liquid substances, by means of a shaft body, which is introduced into the bowel via the anus and is able to elastically fold or invaginate and elastically erect, and whereby the shaft is provided with a dumbbell- or mushroom-shaped balloon body, which is reaching form the rectal portion of the balloon into or through the anal canal. The invention is characterized by a special design and a special choice of materials for the shaft body and the balloon envelope, allowing for a continuous, dynamic trans-anal seal, which is communicating and synchronized with the motility of the anal sphincter and is spontaneously adapting to body movements of the patient, and which is in particular allowing for mobilization of patients from a supine to a sitting or standing patient position or to allow patients for walking, while stool is in a flowable, liquid state or while an infusion of liquid to the rectum is performed.