Device for draining urinary bladder

FIELD: medical engineering.

SUBSTANCE: device has catheter having the first end open and additional tubes. The catheter lumen is 2.0-5.0 mm and wall thickness is 1.0-2.5 mm as large. The catheter has cup seal mounted on lateral surface near the first open end, the second rounded dead end and lateral openings for attaching additional tubes near the second dead end. The additional tubes are manufactured as additional ureteral drains. Lumen space near the first end and lumen space near the lateral openings located aside of the middle portion of catheter are manufactured to receive adapters for connecting a system for collecting urine. Middle portion of the catheter is curved as spiral coil having external diameter not more than 7 times as large as external catheter diameter. It is strengthened with thread brought through catheter lumen, the thread having ends taken out through catheter wall under the cup seal. Lateral draining openings equal or unequal to each other in size equally or unequally spaced on the internal coil side.

EFFECT: improved device interaction with surrounding tissues.

3 cl, 2 dwg

 

The invention relates to medical equipment used for drainage or injection of liquids in the process of surgery and can be used in particular in urology.

A device for drainage of the bladder through the anterior abdominal wall, consisting of a catheter with a dull rounded edge, the end of which has a bend, a locking thread (Stamey percutaneous loop suprapubic catheter: T.A.Stamey: "Percutaneous suprapabic continuous-flow transurethal prostatectomy". Monographs in Urology, 8, №1 (1987)).

The disadvantages of the known devices are: the need for installation into the bladder of the second drainage through the urethra (the formation of Tintoretto or interoretation), inability atraumatic to hold the urethra ureter drains, the impossibility of continuous active aspiration of the contents of the bladder.

Closer to the present invention should be considered as a device for drainage of the bladder containing the catheter with the first open end and additional tubes (see the description of the invention to the author's certificate of the USSR No. 1311720, 23.05.1987).

The device described as. the USSR №1311720 allows for effective drainage of the contents of the bladder, but provides no reduction in the morbidity of this operation.

The problem solved by the present invention, is that the CSOs device for drainage of the bladder, which could increase the efficiency of drainage, to ensure reliability, and to ensure atraumatic passage through the urethra accessory ureter drains.

The technical result of the invention is manifested in improved the unit's interaction with the surrounding tissues.

The essence of the invention is expressed by the set of essential features, in which the device for drainage of the bladder containing the catheter with the first open end and additional tubes, unlike the nearest analogue of the catheter has a lumen of 2.0-5.0 mm, a wall thickness of 1.0-2.5 mm, sealing cuff installed on the side surface of the first open end, a second hollow end rounded and placed at the second blind end side holes for mounting additional tubes, made in the form of auxiliary ureter drains, while the section of the lumen at the first end section of the lumen of the side port located at the side of the middle part of the catheter is performed under the adapter for connecting the system for urine collection, the middle part of the catheter is curved in the form of a helical coil with an outside diameter not exceeding seven outer diameters of the catheter, and sealed threaded through the lumen of the catheter thread with all derived through the wall of the catheter under hermeti yuushuu cuff, and on the inner surface of a coil made of matching or non-matching between the size of the side drainage holes in equal or unequal distance from each other.

Given a set of essential features sufficient to achieve the technical result of the invention in all cases to which the requested amount of legal protection.

In some cases, of its execution or use of the device for draining the bladder may include a catheter with markers for monitoring the depth of its introduction and additional side drainage holes on the outer surface of the coil, and additional lateral drain holes can be made of matching or non-matching between a size and located at equal or unequal distance from each other.

The causal link listed signs with the technical result of the invention is that the presence of an additional unit of tubes, made in the form of auxiliary ureteric drainage, improves the efficiency of drainage and to take into account the specific operation using the device with the appropriate equipment. Execution of the catheter with side holes for mounting additional the additional tubes, placed at the second blind end rounded, provides atraumatic these tubes through the urethra. Under adapter for connecting a system for urine collection section of the lumen of the catheter at the first open end and a section of the lumen of the catheter side holes located from the middle part of the catheter, allows connection of the device with the specified system, and the arrangement of the second section from the middle part of the catheter allows atraumatic to hold the device through the lumen of a hollow organ (with subsequent clipping of the second blind end with rounding and side holes for mounting additional handsets).

Bend the middle part of the catheter, having a lumen of 2.0-5.0 mm and a wall thickness of 1.0 to 2.5 mm, in the form of a helical coil with an outside diameter not exceeding seven outer diameters of the catheter allows for drainage throughout the volume of the bladder, but not to put pressure on its walls (examples of the invention with bringing relevant data, see below). Spiral coil when the unit eliminates the offset of the catheter through the urethra, and the fastening thread (which can easily be cut), derived through the wall of the catheter under the sealing cuff, allows atraumatic to retrieve the device, strife is in the catheter. Sealing cuff eliminates the expiration of content along withdrawn through the wall of the catheter ends. Running on an internal surface of revolution coincident or not coincident with each other on the lateral dimensions of the drainage holes located at equal or unequal distance from each other, allows you to select the catheter, the most suitable for conducted interference.

Improved the unit's interaction with tissues contributes to the execution of the catheter with markers for monitoring the depth of its introduction. The effectiveness of drainage can increase additional drainage holes on the outer surface of the coil, which can also be made of matching or mismatched in size between a and located at equal or unequal distance from each other.

An example implementation of the invention is a device for drainage of the urinary bladder (figure 1, 2)containing the catheter with the largest transverse dimensions, i.e., with a clearance of 5 mm and a wall thickness of 2.5 mm In this case, the outer diameter of the catheter is 5.5 mm, and the maximum outer diameter of the spiral curls of 38.5 mm In the research it was found that with the increase of the outer diameter of the catheter, for example, 1 mm, and accordingly the diameter of the spiral coil 2 mm is the contact leg is RA and the bladder wall (9 cases out of 10). Since the size of the bladder during the operation is changed to the lower side, above the highest values included in the formula of the numeric range for the device is the maximum allowed.

The minimum size of the catheter is caused mainly by the technology of its production and material. An example implementation of the device with the smallest transverse dimensions of the catheter can serve as a device with a catheter made of polypropylene with a clearance of 2.0 mm and a wall thickness of 1 mm decrease in the wall thickness of such a catheter within a process tolerance leads to the loss of strength, and the narrowing affects the drainage or even makes impossible drainage in the presence of, for example, blood clots.

The invention is illustrated in the drawing, in which figure 1 shows a General view of the device for bladder drainage and figure 2 shows the form As specified in figure 1.

Device for draining the bladder contains the catheter 1 with the first open end 2 and additional tubes. The catheter 1 has a clearance of 2.0-5.0 mm, a wall thickness of 1.0-2.5 mm, sealing cuff 3, installed on the side surface of the first open end 2, a second hollow end 4 with rounding and placed at the second blind end face 4 side holes 5 and 6 for mounting additional tubes, the imp is United in supporting ureter drains, when this area of the lumen at the first open end 2 and the area of the lumen of the lateral holes 5 and 6, located at the side of the middle part of the catheter 1, performed under the adapter for connecting the system for urine collection, the middle part of the catheter 1 is bent in the form of a spiral coil 7 with an external diameter not exceeding seven outer diameters of the catheter 1, and bonded threaded through the lumen of the catheter 1 thread 8 with the ends derived through its wall at the sealing cuff 3 and the inner surface of a coil made of matching or non-matching between the size of the lateral drain holes 9 located on equal or unequal distance from each other.

In some cases, of its execution or use of the device for draining the bladder can hold the catheter 1, which are the labels 10 to control the depth of its introduction and additional lateral drain holes 11 on the outer surface of the coil, and additional lateral drain holes 11 are made of matching or non-matching between them in size and are located at equal or unequal distance from each other.

The operation of the device is as follows: during open surgery in the cavity of the bladder (or other abdominal education) ustanavli who have the catheter 1. Spiral coil 7 of the catheter 1 is fixed with a thread 8, which is placed in the lumen. The end of the catheter 1 with a blind end 4, with rounding, carried out through the urethra to the outside. If necessary, take out and an additional tube, made in the form of auxiliary ureter drains. For this additional tube is inserted into the side holes 5 and 6, which are specially designed for attaching them, and spend the urethra with a catheter 1. After withdrawal of the catheter 1 to the outside end cut off at holes 5 and 6 are side helical coil 7. For greater strength the end of the catheter 1 at the first open end 2 is fixed to the skin of the anterior abdominal wall. If the catheter 1 is installed into the bladder during endoscopic manipulation, for it using Windows Explorer. Explorer installed on the urethra, through the bladder and suprapubic rocheposay fistula. The catheter 1 is conducted through the conductor to a depth, as measured by label 10, or under x-ray control. After installation of the catheter 1 tighten the thread 8 for fixing the spiral coil 7 and cut off her ends, derived through the wall of the catheter 1. Next, the ends of the thread 8 tied in a knot and close the sealing cuff 3.

For active aspiration of the contents of one of the sections of the lumen of the catheter 1, for example, plot, located at the side CTE is sty 5 and 6 from its middle part, connect with adapter to connect your system for urine collection. As the catheter 1 has a clearance of 2.0-5.0 mm, a wall thickness of 1.0 to 2.5 mm and the outer diameter of the spiral coil 7 with an external diameter not exceeding seven of its external diameter, the catheter 1 is placed around the bladder volume, but does not exert pressure on its walls. Aspiration of urine freely through the lateral drain holes 9, which are located on the inner surface of the coil 7 and, therefore, can not be closed in case of accidental contact of the catheter 1 with the walls of the bladder. Additional lateral drain holes 11 on the outer surface of the coil 7 can also be used if there is a need for more intensive aspiration of the contents and the location of the catheter 1 can carry out such an aspiration.

Removal of the catheter 1 is enough to cross thread 8 spiral curls 7 and stretch the ends of the catheter 1 in different directions. This spiral coil 7, which when draining the contents eliminates the offset of the catheter 1, is deflected and the catheter 1 can be removed in one direction or another, or replace it with another.

1. A device for drainage of the bladder containing the catheter with the first open end and more tubes, wherein the catheter has a lumen of 2.0-5.0 mm, the thickness of stink is 1.0 to 2.5 mm, sealing cuff installed on the side surface of the first open end, a second hollow end rounded and placed at the second blind end side holes for mounting additional tubes, made in the form of auxiliary ureter drains, while the section of the lumen at the first end section of the lumen of the side port located at the side of the middle part of the catheter is performed under the adapter for connecting the system for urine collection, the middle part of the catheter is curved in the form of a helical coil with an outside diameter not exceeding seven outer diameters of the catheter, and sealed threaded through the lumen of the catheter thread with all derived through the wall catheter under the sealing cuff and the inner surface of a coil made of matching or non-matching between the size of the side drainage holes in equal or unequal distance from each other.

2. The device according to claim 1, characterized in that the catheter are tags to control the depth of its introduction.

3. The device according to claim 1 or 2, characterized in that it contains additional lateral drain holes on the outer surface of the coil, and additional lateral drainage holes are made of matching or non-matching between a dimensions are in equal or unequal distance from each other.



 

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