CN205994847U - Ureter tube placing device under peritoneoscope - Google Patents

Abstract

The utility model discloses a laparoscopic ureter tube inserter, which is mainly composed of an outer sheath tube and a bendable inner tube at the head end. The length of the bendable inner tube; the end of the outer sheath tube is bent and opened, and the head end of the bendable inner tube is prefabricated to be bendable, and the bending direction of the two is the same; the end of the outer sheath tube and the proximal end of the bendable inner tube at the head end are connected The elastic handle is connected; the end of the bendable inner tube at the head end has a sealant cap. By adjusting the length of the flexible inner tube at the head end protruding from the outer sheath tube in the utility model, the bending angle of the flexible inner tube at the head end can be adjusted and changed accordingly according to needs, so that the double J tube to be inserted can follow the course of the ureter, which can effectively Avoid damage to the ureteral mucosa caused by the front end of the double J tube. Compared with the prior art, the utility model has the advantages of simple structure, low cost, safe, convenient and reliable use.

Description

Laparoscopic ureteral catheter inserter

technical field

The utility model belongs to a ureter tube inserter, in particular to a laparoscopic ureter tube inserter.

Background technique

At present, in the field of urology, when performing kidney, renal pelvis and ureter operations, it is generally necessary to place a ureteral stent (commonly known as double "J" tube or double pigtail tube) in the patient's ureter, and then wait about 1-2 months after the operation. The cyst was removed from the urethra. The ureteral stent can play the role of support and drainage, so as to ensure smooth drainage of urine, and reduce the incidence of urine extravasation, perirenal infection, urethral stricture and the like.

With the advancement of science and technology, the application of medical science and technology is changing with each passing day, and surgery is also developing in the direction of minimally invasive and non-invasive, making many traditional open operations replaced by laparoscopic surgery. Laparoscopic surgery has been widely used clinically as one of laparoscopic surgery. At present, most of the operations in urology can be completed under laparoscopy. However, placing a ureteral stent under laparoscopy is far less easy than placing a ureteral stent under open surgery. The operating space is narrow, and airtightness must be maintained during the operation to maintain the pneumoperitoneum pressure and ensure a clear view. Therefore, placing a ureteral stent under a laparoscope is a time-consuming and laborious task, which often makes the surgeon very distressed.

The conventional method of placing a ureteral stent under laparoscopy is: under the observation of a monitor, insert a double-J tube for placing the guide core stent into the surgical field through an operating channel (Trocar), and then extend it into the surgical field through another operating channel. Tissue forceps clamp the head of the double J tube through the ureteral incision and insert it into the ureter cavity until the head end of the double J tube reaches the bladder, then pull out the guide core bracket, and finally use the tissue forceps to adjust the proper position of the ureteral bracket left in the ureter . However, the above method of operation has the following problems:

1. When the double J tube enters the surgical field of view through the operating channel, the airtightness of the operating space is destroyed, resulting in air leakage, which makes the surgical field of view unclear and difficult to operate.

2. Due to the narrow operating space of laparoscopic surgery, the double J tube is relatively long, and when entering the surgical field of view through the operating channel, it is inconsistent with the direction of the ureter, especially the end of the head, which must be bent and changed by the tissue forceps before it can be placed. It is very difficult to operate into the lumen of the ureter, and often takes a long time, or even fails, which is time-consuming and laborious.

To sum up, the traditional method of ureteral stent placement is cumbersome, difficult and time-consuming, which has affected the further development of this type of surgery.

Utility model content

The technical problem to be solved by the utility model is to provide a laparoscopic ureteral tube inserter with simple structure, low cost and safe, convenient and reliable use. Using the utility model to perform surgery, the operation process can maintain the airtightness of the operation space , and can make the head end of the double J tube bend in line with the direction of the ureter, and is a ureteral catheter inserter for quick intubation.

In order to solve the above technical problems, the utility model adopts the following technical solutions;

The laparoscopic ureteral catheter inserter is mainly composed of an outer sheath tube and a flexible inner tube at the head end. The outer sheath tube is covered outside the flexible inner tube at the head end and the length of the outer sheath tube is shorter than the length of the flexible inner tube at the head end; The end of the outer sheath tube is bent and opened, and the head end of the bendable inner tube is prefabricated to be bendable, and the bending direction of the two is the same; the end of the outer sheath tube and the proximal end of the bendable inner tube at the head end are connected by a rebound handle; the head end can be There is a sealant cap at the end of the curved inner tube.

The end of the outer sheath is bent at 90 degrees to open.

The outer sheath tube is a cylindrical hard hollow catheter, the bendable inner tube at the head end is a semi-rigid cylindrical hollow catheter, and the rebound handle is made of U-shaped elastic material.

Aiming at the problems existing in placing ureteral stents under laparoscopy, the inventor designed and manufactured a laparoscopic ureteral catheter inserter, which is mainly composed of an outer sheath and a bendable inner tube at the head end. The outer sheath tube is bent outside and the length of the outer sheath tube is less than the length of the bendable inner tube at the head end; the end of the outer sheath tube is bent and opened, and the head end of the bendable inner tube is prefabricated to be bendable, and the bending direction of the two is the same; the outer sheath tube The end of the tube is connected with the proximal end of the bendable inner tube at the head end by a rebound handle; the end of the bendable inner tube at the head end is provided with a sealant cap. By adjusting the length of the flexible inner tube at the head end protruding from the outer sheath tube in the utility model, the bending angle of the flexible inner tube at the head end can be adjusted and changed accordingly according to needs, so that the double J tube to be inserted can follow the course of the ureter, which can effectively Avoid damage to the ureteral mucosa caused by the front end of the double J tube. Compared with the prior art, the utility model has simple structure and low cost; through simple parallel movement and telescopic action of the inner and outer tubes, double J tubes with different angles can be obtained to adapt to different running ureters; and the double J tubes can be pushed evenly Operated outside the body, it is convenient and reliable to use, making it safe and easy to place a ureteral stent under laparoscopy.

Description of drawings

Fig. 1 is the structure diagram of the utility model laparoscopic ureter tube inserter.

Fig. 2 is a schematic structural view of the outer sheath in the laparoscopic ureteral catheter inserter in Fig. 1 .

Fig. 3 is a schematic structural view of the bendable inner tube at the head end of the laparoscopic ureteral catheter inserter in Fig. 1 .

In the figure: 1. outer sheath tube, 2. flexible inner tube at head end, 3. rebound handle, 4. sealing rubber cap.

detailed description

As shown in Figures 1 to 3, the utility model laparoscopic ureter catheter inserter mainly consists of an outer sheath tube 1 (cylindrical hard hollow catheter) and a flexible inner tube 2 (semi-rigid cylindrical hollow catheter) at the head end. ), the outer sheath tube is set outside the bendable inner tube at the head end and the length of the outer sheath tube is less than the length of the bendable inner tube at the head end; It is prefabricated to be bendable (changes to a curved shape when stretched out of the outer sheath, and straightens when retracted into the outer sheath), and the bending direction of the two is the same; the end of the outer sheath and the proximal end of the bendable inner tube are controlled by a rebound handle 3 Connected, the rebound handle is made of U-shaped elastic material, which can drive the flexible inner tube at the head end to move back and forth in the outer sheath; the flexible inner tube at the head end has a sealing rubber cap 4 to keep the flexible inner tube at the head end sealed.

When in use, the head end can be bent and the head end of the inner tube can be retracted into the outer sheath to straighten, so that it is convenient to enter the abdominal cavity through the operation channel. After finding the ureter under the laparoscopic field of view, press the rebound handle so that the head of the flexible inner tube protrudes out of the outer sheath, and the head of the ureteral catheter inserter bends so that the double J tube to be placed can follow the course of the ureter. Conveniently and quickly push one end of the double J tube to the bladder to complete the tube placement, and effectively avoid damage to the ureteral mucosa caused by the front end of the double J tube.

Claims (3)

1. under a kind of peritoneoscope ureter tube placing device it is characterised in that being mainly made up of outer sheath and the flexible inner tube of head end, outward Sheath is enclosed within that the flexible inner tube of head end is outer and length of outer sheath is less than the length of the flexible inner tube of head end；Outer sheath end bend Opening, the head end of the flexible inner tube of head end is prefabricated into flexible, and both bending directions are consistent；Epitheca pipe end is flexible with head end Inner tube near-end is connected by resilience handle；The flexible interior pipe end of head end has sealed gum cap.

2. under peritoneoscope according to claim 1 ureter tube placing device it is characterised in that：Described outer sheath end bend is in 90 degree of openings.

3. under peritoneoscope according to claim 1 ureter tube placing device it is characterised in that：Described outer sheath is cylindrical hard Matter hollow tubing conductor, the flexible inner tube of head end is semi-rigid cylindrical empty cardiac catheter, and resilience handle is made up of U-shaped elastomeric material.