DE212024000093U1 - Flexible, visible ureteral tube with negative pressure aspiration - Google Patents

Abstract

A flexible, visible ureteral tube probe with negative pressure aspiration, comprising a tube holder (1), the tube holder (1) having a tube (7) on one side and a dilator tube (9) inserted inside, which extends through the tube (7) and ends outside the tube (7). At the end of the tube (7) there is a deformable tube (8), and the end of the dilator tube (9) that lies outside the tube (7) has a flexible region (10). The end of the dilator tube (9) that passes through the tube holder (1) is connected to a dilator holder (11).

Description

TECHNICAL FIELD

The present practical innovation concerns the medical device, namely a flexible, visible ureteral tube with negative pressure aspiration.

BACKGROUND OF THE INVENTION

Ureteroscopy has become an important tool for treating upper urinary tract stones. A ureteral access probe is typically used during ureteroscopy. The Chinese patent application contains CN208927370U A flexible, visible ureteral tube with negative pressure aspiration. This tube design consists of an outer tube and an inner tube inserted into it. The inner tube incorporates a central channel to accommodate the ureteroscope, and its tip is transparent to facilitate image acquisition.

The Chinese patent application CN215688239U shows a disposable ureteral tube with two variable diameters and two separate channels—a large and a small—along the axis. The external part of the tube features a vacuum tube for the large channel and a transparent measuring tube with a scale and pressure release for the small channel.

The main goals of these patents are to position the tube receptacle optimally and to remove fluid and stones from the kidney using vacuum. However, due to their lack of flexibility, these structures are poorly suited to traversing the tortuous areas of the urethra and ureter. Therefore, we propose a flexible, visible ureteral tube with negative pressure aspiration.

SUMMARY OF THE INVENTION

(I) Resolved technical problems

In view of the shortcomings of the existing technology, this practical innovation offers a flexible, visible ureteral tube with negative pressure aspiration. The active flexibility of the ureteroscope allows the surgeon to manipulate the ureteroscope handle to bend the combined ureteroscope and ureteral tube or the combined ureteroscope and dilator tube. This facilitates passage through the tortuous areas of the urethra and ureter and allows for visible tube insertion.

Previously, it was necessary to place a guidewire using a ureteroscope, which increased the operating time and resulted in additional costs for the patient. This innovation eliminates these steps.

(II) Technical solution

To achieve the above-mentioned objectives, the present practical innovation proposes the following technical solution: a flexible, visible ureteral tube with negative pressure aspiration, comprising a tube holder. A tube is attached to one side of the tube holder, and a dilator tube is inserted into the tube holder, passing through the tube and ending outside the tube. A deformable tube is located at the end of the tube, and the end of the dilator tube, which is outside the tube, has a flexible section. The end of the dilator tube that passes through the tube holder is connected to a dilator holder.

Preferably, the end of the dilator tube is conical and made of transparent material. The surface of the dilator tube is coated with a hydrophilic coating to facilitate imaging.

The flexible section may be a mesh-like or perforated tube made of medical-grade rubber or nylon.

The malleable tube can be made of medical rubber.

The hose holder can consist of a slanted tube one, a connecting tube, a slanted tube two and a handle.

Two end caps may be integrated at the end of the connecting tube, and the dilator holder may have a movable handle.

A removable perforated cap can be mounted at the end of the connecting tube.

The hose may consist of an outer tube and an inner tube, with the outer tube being filled with several metal threads and provided with a hydrophilic coating.

(III) Advantages

1. 1. Die biegsame, sichtbare Ureteral-Schlauchsonde mit negativer Druck-Aspiration ermöglicht es dem Chirurgen, die Kombination von Ureteroskop und Ureteral-Sonde oder die Kombination von Ureteroskop und Dilatatorrohr zu biegen. Dies erleichtert die Passage durch die kurvenreichen Bereiche der Harnröhre und des Ureters und ermöglicht die Sondeneinführung unter sichtbaren Bedingungen.
2. 2. Die direkte Sondeneinführung ohne vorherige Platzierung eines Leitdrahths mit einem Ureteroskop verringert die Operationszeit und die Kosten für den Patienten. Dies erhöht die Erfolgsrate der Sondeneinführung und die Sicherheit des Eingriffs.

Compared to existing technologies, this practical innovation offers the following advantages:

1. 1. The flexible, visible ureteral tube with negative pressure aspiration allows This allows the surgeon to bend the combined ureteroscope and ureteral probe or the combined ureteroscope and dilator tube. This facilitates passage through the tortuous areas of the urethra and ureter and allows for visible probe insertion.
2. 2. Direct tube insertion without prior guidewire placement using a ureteroscope reduces operating time and costs for the patient. This increases the success rate of tube insertion and the safety of the procedure.

FIGURE LIST

• 1 shows the front view scheme of the present practical innovation;
• 2 shows the cross-sectional diagram of the hose;
• 3 shows the diagram of the connecting tube;
• 4 shows the diagram of the dilator holder. In the figures:
  1. 1 - hose holder;
  2. 2 - crooked pipe one;
  3. 3 - connecting tube;
  4. 4 - end caps;
  5. 5 - crooked pipe two;
  6. 6 - handle;
  7. 7 - hose;
  8. 8 - deformable hose;
  9. 9 - dilator tube;
  10. 10 - flexible area;
  11. 11 - Dilator holder;
  12. 12 - outer tube;
  13. 13 - metal threads;
  14. 14 - inner tube.

DETAILED DESCRIPTION OF THE FIGURES

Below, in conjunction with the drawings of the present practical innovation, a clear and complete description of the technical solutions of the present practical innovation is provided. Obviously, the described embodiments are only some, but not all, of the present practical innovation. All other embodiments that can be obtained by a person skilled in the art without creative effort fall within the scope of the present practical innovation.

Please note The flexible, visible ureteral tube with negative pressure aspiration comprises a tube holder (1) with a tube (7) attached to the side. A dilator tube (9) is inserted inside the tube holder, passing through the tube (7) and ending outside the tube (7). At the end of the tube (7) there is a deformable tube (8), and the end of the dilator tube (9) that lies outside the tube (7) has a flexible section (10). The end of the dilator tube (9) that passes through the tube holder (1) is connected to a dilator holder (11).

The end of the dilator tube (9) is conical and made of transparent material. The transparent tip allows the ureteroscope to capture the image in front of it.

The flexible portion (10) may be a mesh-like or perforated tube made of medical rubber or nylon.

The malleable tube (8) can be made of medical-grade rubber and is flexible. Both the malleable tube (8) and the flexible section (10) can be used to achieve overall flexibility through the active flexibility of the ureteroscope.

The hose holder (1) consists of a slanted tube (2), a connecting tube (3), a slanted tube (5), and a handle (6). Slanted tube (2) and slanted tube (5) are attached to both sides of the connecting tube (3) and connected to the hose (7). Handles (6) are mounted on both sides of the connecting tube (3).

Two end caps (4) are integrated at the end of the connecting tube (3), and the dilator holder (11) has a movable handle.

The hose (7) consists of an outer tube (12) and an inner tube (14), the outer tube (12) being filled with several metal threads (13) and provided with a hydrophilic coating.

A removable perforated cap can be mounted at the end of the connecting tube (3) to reduce the distance between the ureteral probe and the ureteroscope during negative pressure aspiration and to increase the pressure of the negative pressure aspiration. The dilator holder (11) has a movable handle with which the combination of dilator tube and ureteroscope can be moved before and after the insertion. can be moved back to adjust the length of the dilator tube in the body and to increase the bending range of the ureteroscope and dilator tube combination.

• Das Dilatatorrohr (9) wird in den Schlauchhalter (1) eingeführt, durch den Schlauch (7) geschoben und zur vollständigen Ureteral-Sonde zusammengebaut. Anschließend wird das Ureteroskop in das Dilatatorrohr (9) eingeführt, um eine Kombination aus Ureteroskop und Ureteral-Sonde oder Ureteroskop und Dilatatorrohr zu bilden.

Insertion procedure of the flexible, visible ureteral tube with negative pressure aspiration:

• The dilator tube (9) is inserted into the tube holder (1), pushed through the tube (7), and assembled to form the complete ureteral probe. The ureteroscope is then inserted into the dilator tube (9) to form a combined ureteroscope and ureteral probe or ureteroscope and dilator tube.

Using the ureteroscope's imaging system, the combination is inserted into the body under direct visual guidance, pushed through the urethra into the bladder, the ureteral orifice is located, and pushed further into the ureter until the combination reaches the renal pelvis region.

After reaching the renal pelvis region, the tube (7) is left in place while the dilator tube (9) and ureteroscope are removed. Outside the body, the dilator tube (9) is separated from the ureteroscope.

The ureteroscope is then inserted into the tube (7) and the next surgical step is performed on the kidney area.

If negative pressure aspiration is required during the procedure, the inclined tubes one (2) and two (5) of the tube holder (1) can be connected to a negative pressure aspirator to remove fluid and stones.

Although the embodiments of the present practical innovation have been illustrated and described, one skilled in the art will understand that these examples may be variously altered, modified, substituted, and varied without departing from the spirit and principles of the present practical innovation. The scope of the present practical innovation is determined by the appended claims and their equivalents.

QUOTES CONTAINED IN THE DESCRIPTION

This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This 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

• CN 208927370U [0002]
• CN 215688239U [0003]

Claims (8)

A flexible, visible ureteral tube probe with negative pressure aspiration, comprising a tube holder (1), the tube holder (1) having a tube (7) on one side and a dilator tube (9) inserted inside, which extends through the tube (7) and ends outside the tube (7). At the end of the tube (7) there is a deformable tube (8), and the end of the dilator tube (9) that lies outside the tube (7) has a flexible region (10). The end of the dilator tube (9) that passes through the tube holder (1) is connected to a dilator holder (11). The flexible, visible ureteral tube with negative pressure aspiration according to Claim 1 , wherein the end of the dilator tube (9) is conical and made of transparent material. The surface of the dilator tube (9) is provided with a hydrophilic coating. The flexible, visible ureteral tube with negative pressure aspiration according to Claim 1 , wherein the flexible region (10) is a grid-like or perforated hose. The flexible, visible ureteral tube with negative pressure aspiration according to Claim 1 , wherein the deformable hose (8) is a deformable rubber hose whose surface is provided with a hydrophilic coating. The flexible, visible ureteral tube with negative pressure aspiration according to Claim 1 , wherein the hose holder (1) consists of a slanted tube (1) (2), a connecting tube (3), a slanted tube (2) (5), and a handle (6). The connecting tube (3) is attached on both sides to slanted tube (1) (2) and slanted tube (2) (5) and is connected to the hose (7). Handles (6) are attached to both sides of the connecting tube (3). The flexible, visible ureteral tube with negative pressure aspiration according to Claim 5 , wherein the connecting tube (3) has two end caps (4) at the end and the dilator holder (11) has a movable handle. The flexible, visible ureteral tube with negative pressure aspiration according to Claim 5 , wherein the connecting tube (3) has a removable perforated cap at the end. The flexible, visible ureteral tube with negative pressure aspiration according to Claim 1 , wherein the hose (7) consists of an outer tube (12) and an inner tube (14), the outer tube (12) being located outside the inner tube (14). A plurality of metal threads (13) are inserted inside the outer tube (12), and the outer tube (12) is provided with a hydrophilic coating.

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