DE202017101126U1 - urinary catheter - Google Patents

Abstract

A bladder catheter having a catheter tube (1) with a first connection (2) and at least one catheter eye (3) to be placed in the bladder (4), characterized in that a holding unit (10) and a reservoir container (10) are located in the bladder (4). 5), so that the holding unit (10) and the reservoir container (5) are the proximal end of the bladder catheter, that the reservoir container (5) via a first channel (6) with a second terminal (7) and the holding unit (10). connected via a second channel (11) with a third connection (12), that the catheter tube (1) on or in the reservoir container (5) or on or in the holding unit (10) ends, that the catheter eye (3) at height the holding unit (10) is located and that the first channel (6) via openings (9) of the channel wall with the urethra (8) is connected.

Description

The invention relates to a bladder catheter having a catheter tube with a first connection and at least one catheter eye to be placed in the bladder.

Bladder catheters are a common tool in medicine for draining urine from the bladder via the urethra (transurethral) or the abdominal wall. There is a distinction between disposable and permanent catheters. The latter are designed for prolonged retention in the urethra and / or urinary bladder and serve for the continuous or temporary discharge of urine from the bladder. Not only are catheters used in urinary tract and / or urinary bladder or prostate surgery, but they are often used postoperatively, when it is foreseeable that the patient will not be able to get up for some time or require accurate fluid balancing.

Permanent catheters are generally designed as two-way catheters, which means that the catheter tube, in addition to a channel for discharging the urine, has a second channel, via which a balloon located in the urinary bladder at the catheter end can be filled with liquid. The filled balloon serves to fix the catheter in the bladder. The liquid used for filling is primarily saline or glycerol or glycerol solution. Three-way catheters are also used, in which the catheter tube has a third channel with an outlet opening at the catheter end, through which, for example, a rinsing solution or a medicament can be introduced into the bladder. The rinse solution exits the bladder, such as urine, through an opening at the catheter end, also referred to as a catheter eye, through the main channel.

The publication DE 20 2012 006 814 U1 includes a bladder catheter having a tube, wherein the tube has an insertion section for insertion via a urethra into a bladder, and wherein the tube has a connection section for connecting connection elements and wherein through the insertion section fluid from the urethra at the connection section is drainable. A closable valve is arranged in the connection section in such a way that leakage of fluid from the connection section when the valve is closed can be prevented. Thus, when the valve is closed, a full urine bag can be exchanged without urine being able to escape from the connecting section of the bladder catheter.

Through the publication DE 20 2007 007 713 U1 a multi-way catheter is known, which differs from the known catheter in that the catheter body has at least one third channel for the application of at least one drug parallel to the catheter body with at least one outlet opening. Through this outlet opening can take place after insertion of the catheter into the bladder targeted application of drugs in the region of the urethra via the third channel of the catheter.

The publication DE 10 2005 013130 A1 discloses a catheter whose tube has a surface that at least partially has a suitable structure for receiving a lubricant structure or contour, so that the structure serves as a depot for a lubricant. This is intended to minimize injury to the mucous membranes when inserting the catheter.

A transurethral indwelling catheter for the treatment of bladder and / or prostate dysfunction is disclosed in the document DE 20 2011 104 675 U1 known. The indwelling catheter consists of a catheter tube, a bladder and a prostate balloon with corresponding inlets and outlets. In this case, the urine drainage opening is arranged above and anatomically conditioned the prostate balloon below the bladder balloon. The walls of bladder and prostate balloon are designed so that stored in the balloons, medications containing fluids can diffuse specifically into the bladder or prostate. When filled, the prostate balloon has a maximum outer diameter between 20 and 30 charr. on. The indwelling catheter should have a maximum retention time of 48h in the bladder. The disadvantage of this catheter is exclusively for use in men. In addition, it can be assumed that the disclosed balloon strength is much too low to hold the catheter in the bladder.

Catheters may experience complications when used. A known problem is the occurrence of a bacterial infection, which occurs preferentially in patients who need to wear a permanent catheter. If left in the body for more than 7 days, the risk of bacteriuria increases to 25% to 50%. In the process, bacteria rise through the urethra and into the bladder. This disease is detectable by the bacteria in the urine. Healthy urine is sterile.

This is favored by the type and / or shape of the catheters. The arrangement of the catheter eyes at the end of the catheter above the balloon, which ensures the tightness of the catheter in the bladder, there is never a complete emptying of the bladder. There always remains a residual level of urine in which salts such as calcium salts and urea concentrate. After a few days, a variety of compounds crystallize. These crystals cause on the one hand Pain from the mechanical friction on the inner wall of the urethra and the bladder, on the other hand, they can leave the catheter past the bladder and migrate into the urethra.

Through the catheter, the normally moist urethra wall can dry out or dry out. A non-optimal humidified urethra can cause painful irritation due to mechanical friction between the catheter wall and the urethral wall. Furthermore, a breeding ground for germs and bacteria can form, so that inflammatory foci can form between the catheter wall and the urethral wall. Such infections can cause scarring of the urethra and urethral strictures, which are permanently difficult to cure.

The specified in the protection claim 1 invention is based on the object, in particular to provide a bladder catheter as stimulus and pain relief indwelling catheter.

This object is achieved with the features listed in the protection claim 1. The bladder catheter with a catheter tube having a first connection and at least one catheter eye to be placed in the bladder are characterized in particular by the fact that they can be used without problem as permanent catheters.

For this purpose, a holding unit and a reservoir container are located in the urinary bladder so that the holding unit and the reservoir container are the proximal end of the bladder catheter. Furthermore, the reservoir container via a first channel to a second terminal and the holding unit via a second channel to a third terminal. The catheter tube terminates at or in the reservoir container or at or in the holding unit. The catheter eye is located at the height of the holding unit. In addition, first channel is connected via openings of the canal wall with the urethra.

The bladder catheter according to the invention can be introduced via the urethra into the urinary bladder (transurethral) or as suprapubic bladder catheter via the abdomen into the bladder.

The catheter tube is a hollow and flexible conduit through which, for example, a liquid can be transported. This hollow conduit is also known as lumen. The catheter tube is limited by an outer wall, which can be designed differently strong.

The first connection at the distal end is a connection which is located at the end of the catheter facing away from the body, that is to say at the end which is not in the body after insertion of the catheter. The port can be any known port. For example, the port can be used to connect various bags for collecting urine.

As a channel, a further flexible and hollow conduit is referred to, through which a liquid can be transported. Preferably, the channel, also referred to as lumen, runs parallel on or in the catheter tube.

The channel has openings that connect the interior of the canal and the urethra. Advantageously, these openings are as outlet openings after the introduction of the catheter into the bladder below the sphincter of the urinary bladder in the region of the urethra.

The channel can be arranged on or in the catheter tube. The channel is in the catheter tube, the openings are the channel wall and the catheter tube wall through-cutting openings. At least the areas of the walls around the openings are interconnected so that liquid from the reservoir container can only enter the urethra and not the catheter tube.

After the reservoir container has been filled with the liquid, the second port is closed so that the liquid remains in the reservoir tank. Through the openings located at the channel liquid can pass from the reservoir tank via the channel to the openings. From these, this flows into the interior space between the urethra and either catheter tube or catheter tube with channel. Thus, it is advantageous for liquid to pass continuously from the openings, as a result of which the area between the catheter and the urethra is permanently moistened. Crystals that may be produced by concentrated or concentrating urine, and / or bacteria that can settle at these nutrient sites between the catheter and the urethral wall can thus be prevented from growing, continuously moistened and / or washed away and discharged from the body. Furthermore, infections can be reduced or avoided.

Advantageously, transurethral catheter according to the invention, intended for use in men, have these openings. Due to the significantly longer urethra in men compared to women, a continuous moistening and / or rinsing is particularly important here.

The liquid for the reservoir container may be at least one drug and / or a cell-individual diet causing Be substance containing solution. Preferably, this has at least one substance selected from water, glycerol and a bacteriostatic and / or bactericidal substance. In a particular embodiment, the liquid contains at least one substance which counteracts crystal formation, for example of urea crystals. In addition, this may advantageously be an anti-inflammatory.

The openings may be holes that pass through the material of the channel. Preferably, the hole has a diameter of 0.1 mm to 5 mm, in particular from 0.5 mm to 1 mm. Preferably, there are several holes next to and / or one below the other.

In another embodiment, the hole may be coated with a nano mesh. As nano-net here is called an inorganic, two-dimensional, nanostructured material.

A catheter eye is an opening in the wall of the catheter tube through which urine is transported from the urinary bladder via the lumen of the catheter tube via the first distal connection after insertion of the catheter into the urinary bladder. The first distal connection preferably has a bag for collecting the urine. It is advantageously ensured by the low position of the catheter eye that the bladder can be completely emptied through the catheter. No urine swamp remains, in which salts such as calcium salts or urea can concentrate and crystallize out. This prevents crystals from migrating between the catheter tube and the urethra, where it can be used for painful friction and / or as a breeding ground for bacteria.

The catheter eye can in principle be designed in any shape and size. Preferably, the catheter eye is round to oval and without sharp edges. The oval catheter eye preferably has a maximum diameter, measured over the widest point of the catheter eye, of 1 mm to 10 mm, in particular 1 mm to 5 mm.

The reservoir container should always be emptied before removal from the body, which is possible at any time via the second connection.

Advantageous embodiments of the invention are specified in the protection claims 2 to 12.

The reservoir container may be located after the development of the protection claim 2 above the holding unit on the catheter tube. In addition, in a further embodiment, the reservoir container, the holding unit surrounded at least partially. In particular, the holding unit may also be a balloon-shaped holding unit.

The reservoir container and the holding unit are according to the embodiment of the protection claim 3 balloon-shaped hollow body, which are themselves at the same time a holding unit or located above the proximal holding unit on the catheter tube. In a preferred embodiment, the reservoir container is arranged above the holding unit.

Between the openings as first openings is located according to the embodiment of the protection claim 4, a at least the catheter tube partially surrounding and connected by second openings with the first channel and a flexible wall exhibiting reservoir.

The flexible wall of the reservoir is according to the embodiment of the protection claim 5 at least partially a selectively permeable membrane or a semi-permeable membrane or has holes. The membrane may for example consist of silicone, latex, polyurethane, polyamide, an elastomer, a polyamide, polyvinyl chloride or a thermoplastic material.

In the reservoir is located after the development of the protection claim 6, an open-pore flexible body. This can be for example a sponge as a memory.

According to the embodiment of claim 7, the reservoir reservoir has at least one outlet to the urinary bladder formed as a hole, or at least one region of the wall of the reservoir reservoir is a selectively permeable membrane or a semipermeable membrane. This liquid can pass from the reservoir container into the bladder.

The proximal holding unit is formed balloon-shaped according to the embodiment of the protection claim 8, wherein the balloon has at least one cutout to the catheter tube, so that the cross section of the balloon is an interrupted ring. Furthermore, the catheter tube has the catheter eye in the cutout. Thus, the bladder is completely emptied.

Conveniently, the catheter tube according to the embodiment of the protection claim 9 consists of a metal or a polymer. This can be stainless steel, silicone, latex, polyvinyl chloride, polyethylene and polyurethane.

Advantageously, any common biocompatible material can be used so that there are no unwanted reactions when using the catheter in the body. In addition, the Catheter tube other materials or be coated with other materials, for example, to give it hydrophilic properties for better lubricity and / or radiopaque properties.

The length of the catheter tube of the bladder catheter can be selected individually. If the catheter is intended for use in a man, then the catheter tube is made longer than in a catheter according to the invention for a woman. It is known that the male urethra is about 20 cm to 25 cm longer than the urethra of the female is about 3 cm to 4 cm.

The length of the catheter tube is for a man preferably 20 cm to 50 cm, in particular 30 cm to 45 cm.

The length of the catheter tube is for a woman preferably 5 cm to 20 cm, especially 7 cm to 11 cm.

According to the embodiment of the protection claim 10, at least one pressure sensor and / or one temperature sensor and / or one liquid level sensor are located in the reservoir container and / or in the catheter tube. This or these is or are connected to a microcontroller of a transponder with a transmitter / receiver and an electromagnetic wave antenna.

In the first channel is after the development of the protection claim 11, at least one moisture sensor, which is connected to a microcontroller of a transponder with a transmitter / receiver and an antenna for electromagnetic waves.

According to the embodiment of the protection claim 12, there is or are at least one flow rate sensor in the catheter tube and / or in the first channel, which is or are connected to a microcontroller of a transponder with a transmitter / receiver and an electromagnetic wave antenna.

The measured values of the respective sensor (s) of the developments of the protection claims 10 to 12 can be transmitted wirelessly via the transmitter / receiver and the antenna to a receiver for storage and / or processing. In addition, data can also be transmitted wirelessly from an external transmitter via the antenna and the receiver to the microcontroller. The transmission takes place by means of the electromagnetic waves.

An embodiment of the invention is illustrated in principle in the drawings and will be described in more detail below.

Show it:

1 a bladder catheter with a holding unit and a reservoir container and

2 a bladder catheter with a holding unit, a reservoir container and a reservoir.

A bladder catheter essentially consists of a catheter tube 1 a channel 6 as a first channel 6 with a reservoir tank 5 and a second channel 11 with a holding unit 10 ,

The 1 shows a bladder catheter with a holding unit 10 and a reservoir tank 5 in a schematic representation.

The bladder catheter is located with its proximal end in the bladder 4 , The reservoir tank 5 is filled with a liquid. The holding unit 10 lies deep in the bubble triangle above the bladder floor and the prostate or sphincter of the urinary bladder 4 , A catheter eye 3 lies as close as possible above the bladder, leaving the urinary bladder 4 completely emptied of urine. The catheter tube 1 has at least one outlet opening as the first connection 2 on, which is located at the distal end of the bladder catheter. Furthermore, the catheter tube ends 1 in the reservoir tank 5 , The holding unit 10 is balloon-shaped, the interior of which via the second channel 11 in a third connection 12 at the distal end opens. The reservoir tank 5 is over the first channel 6 with a second connection 7 connected at the distal end. This first channel 6 has openings 9 which are designed as holes. These openings 9 connect it to the reservoir tank 5 connected first channel 6 with the inner wall of the urethra 8th , This liquid enters the reservoir tank 5 to the inner wall of the urethra 8th , This is the second port 7 locked. The urethra is thus advantageous 8th constantly flushed with liquid, whereby the accumulation of bacteria and associated inflammation is avoidable. The first channel 6 and the second channel 11 are directly on the catheter tube 1 arranged and thus run parallel to this.

The 2 shows a bladder catheter with a holding unit 10 , a reservoir tank 5 and a storage container 13 in a schematic representation.

In a first embodiment, the bladder catheter further has a flexible one Wall having reservoir 13 on, extending between catheter tube 1 with the first channel 6 and the second channel 11 and the urethra 8th located. The openings 9 here are first openings 9 , where the reservoir 13 between two first openings 9 located. The first channel 6 has second openings 14 in the area of the storage container 13 , This arrives when filling the reservoir tank 5 at the same time liquid in the reservoir 13 , During humidification of the urethra 8th the reservoir tank deflates 5 first. Only then emptied, if the reservoir tank 5 is not refilled in the meantime, the reservoir 13 , Advantageously, the flexible wall of the reservoir 13 be at least partially formed as a selectively permeable membrane or a semi-permeable membrane. This allows the urethra through this membrane 8th be moistened.

The reservoir tank 5 may in a further embodiment at least one outlet formed as a hole 15 to the urinary bladder 4 exhibit. But it can also at least a portion of the wall of the reservoir tank 5 a selectively permeable membrane or a semipermeable membrane.

• – sich im Reservoirbehälter 5 jeweils wenigstens ein Drucksensor und/oder ein Temperatursensor und/oder ein Flüssigkeitsstandsensor,
• – sich im ersten Kanal 6 wenigstens ein Feuchtigkeitssensor und/oder
• – sich im Katheterschlauch 1 und/oder im ersten Kanal 6 wenigstens ein Durchflussmengensensor befinden. Diese können einzeln oder in ihrer Mehrzahl mit einem Mikrocontroller eines Transponders mit einem Sender/Empfänger und einer Antenne für elektromagnetische Wellen verbunden sein.

In other embodiments

• - in the reservoir tank 5 in each case at least one pressure sensor and / or a temperature sensor and / or a liquid level sensor,
• - in the first channel 6 at least one humidity sensor and / or
• - in the catheter tube 1 and / or in the first channel 6 at least one flow rate sensor are located. These may be connected individually or in their majority to a microcontroller of a transponder with a transmitter / receiver and an electromagnetic wave antenna.

LIST OF REFERENCE NUMBERS

1

catheter tube

2

first connection

3

catheter eye

4

bladder

5

reservoir tank

6

first channel

7

second connection

8th

urethra

9

Opening, first opening

10

holding unit

11

second channel

12

third connection

13

reservoir

14

second opening

15

exit

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202012006814 U1 [0004]
• DE 202007007713 U1 [0005]
• DE 102005013130 A1 [0006]
• DE 202011104675 U1 [0007]

Claims (12)

Bladder catheter with a catheter tube ( 1 ) with a first connection ( 2 ) and at least one in the urinary bladder ( 4 ) to be placed catheter eye ( 3 ), characterized in that in the bladder ( 4 ) a holding unit ( 10 ) and a reservoir tank ( 5 ), so that the holding unit ( 10 ) and the reservoir tank ( 5 ) are the proximal end of the bladder catheter, that the reservoir container ( 5 ) via a first channel ( 6 ) with a second connection ( 7 ) and the holding unit ( 10 ) via a second channel ( 11 ) with a third connection ( 12 ), that the catheter tube ( 1 ) on or in the reservoir tank ( 5 ) or on or in the holding unit ( 10 ) ends, that the catheter eye ( 3 ) at the height of the holding unit ( 10 ) and that the first channel ( 6 ) via openings ( 9 ) of the canal wall with the urethra ( 8th ) connected is. Bladder catheter for protection claim 1, characterized in that the reservoir container ( 5 ) above the holding unit ( 10 ) on the catheter tube ( 1 ) or that the reservoir tank ( 5 ) the holding unit ( 10 ) at least partially surrounds. Bladder catheter according to protection claim 1, characterized in that the reservoir container ( 5 ) and the holding unit ( 10 ) are balloon-shaped hollow body. Bladder catheter according to protection claim 1, characterized in that between the openings ( 9 ) as first openings ( 9 ) at least the catheter tube ( 1 ) partially surrounding and through second openings ( 14 ) with the first channel ( 6 ) connected and a flexible wall having reservoir ( 13 ) is located. Bladder catheter for protection claim 1, characterized in that the flexible wall of the reservoir ( 13 ) is at least partially a selectively permeable membrane or a semi-permeable membrane or has holes. Bladder catheter for protection claim 4, characterized in that in the reservoir ( 13 ) is an open-pore flexible body. Bladder catheter according to protection claim 1, characterized in that the reservoir container ( 5 ) at least one outlet formed as a hole 15 to the urinary bladder ( 4 ) or that at least a portion of the wall of the reservoir tank ( 5 ) is a selectively permeable membrane or a semipermeable membrane. Bladder catheter according to protection claim 1, characterized in that the proximal holding unit ( 10 ) is balloon-shaped, wherein the balloon at least a cutout to the catheter tube ( 1 ), so that the cross section of the balloon is an interrupted ring, and that the catheter tube ( 1 ) in the cutout the catheter eye ( 3 ) owns. Bladder catheter according to protection claim 1, characterized in that the catheter tube ( 1 ) consists of a metal or a polymer. Bladder catheter for protection claim 1, characterized in that in the reservoir container ( 5 ) and / or in the catheter tube ( 1 ) is at least one pressure sensor and / or a temperature sensor and / or a liquid level sensor and that the pressure sensor and / or the temperature sensor and / or the liquid level sensor is connected to a microcontroller of a transponder with a transmitter / receiver and an antenna for electromagnetic waves. Bladder catheter according to protection claim 1, characterized in that in the first channel ( 6 ) is at least one humidity sensor and that the humidity sensor is connected to a microcontroller of a transponder with a transmitter / receiver and an antenna for electromagnetic waves. Bladder catheter according to protection claim 1, characterized in that in the catheter tube ( 1 ) and / or in the first channel ( 6 ) at least one flow rate sensor is located and that the flow rate sensor is connected to a microcontroller of a transponder with a transmitter / receiver and an antenna for electromagnetic waves.

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