CN107837451A - A kind of double J pipe extractor - Google Patents

Abstract

The invention discloses a kind of double J pipe extractor, including conduit and seal wire is extracted, one end bending of conduit is set, and is extracted seal wire and is arranged in conduit, and the both ends of extended conduit, and it is closed ring seal wire to extract seal wire.A kind of double J pipe extractor provided by the invention stretches into urethra, under the guide of colorful Doppler ultrasound diagnostic apparatus using the structure that seal wire is extracted built in conduit by conduit, extract seal wire and extract double J pipe, substitute cystourethroscope and mondet forceps, more soft compared with hard mirror, volume is smaller, it is more comfortable, it and the mode extracted is low compared to the mode fault rate of gripping, can effectively shorten the time for taking double J pipe to expend, mitigate patient's pain, cost is reduced, it is convenient and swift.

Description

A double J tube extractor

technical field

The invention relates to the field of medical instruments, in particular to a double J tube extractor.

Background technique

Double J tube, also known as pigtail catheter, is suitable for upper urinary tract operations such as kidney stones, ureteral stones, hydronephrosis, kidney transplantation, benign tumors of the kidney and ureter, as well as lithotripsy, dilation of ureteral stricture, and replantation of the bladder and ureter During the treatment process such as surgery, it is implanted in the patient's body during the operation, and it is usually made of silicone rubber or polyurethane polymer material that cannot be degraded and absorbed in the human body.

Figure 1 is a schematic diagram of the structure of a common double J tube. During the operation, the elbows at both ends of the double J tube are placed in the renal pelvis and bladder of the human body, and the middle part is placed in the ureter connecting the renal pelvis and bladder to drain urine. , It plays an important role in preventing ureteral stricture and adhesion blockage. It is generally implanted in the human body and removed after 1 month.

At present, invasive operations are required to remove the double J tube. For example, the double J tube is taken out through the urethra using cystourethroscopy and foreign body forceps. After entering the urethra, the volume is large, and the operation is complicated. It is difficult to take out the double J tube with forceps. Some patients need to operate under anesthesia, which causes great pain to the patient, and even causes the patient's urethral tissue damage and infection. and edema.

Contents of the invention

The invention provides a double J tube extractor, which replaces the cystourethroscope and the forceps for removing foreign bodies, and can complete the double J tube extraction operation under the guidance of a color Doppler ultrasonic diagnostic instrument, solving the existing method of taking out the double J tube Due to the large number of instruments used and the complex operation, the removal process causes great pain to the patient, and even causes damage to the patient's urethral tissue, infection and edema.

A double J tube extractor provided by the present invention includes: a catheter and a guide wire, one end of the catheter is bent, and the guide wire is arranged in the catheter and can extend out of the catheter. At both ends, the set guide wire is a closed loop guide wire.

According to an embodiment of the present invention, a water injection port is opened on the side wall of the other end of the conduit, the water injection port extends to the outside of the conduit, and a rubber plug is provided at the water injection port.

According to an embodiment of the present invention, the end surface of the other end of the catheter is concaved into a concave surface, and the concave surface is provided with a through hole for the sleeve guide wire to protrude from, and the diameter of the through hole is the same as that of the sleeve guide wire. The wire diameter matches.

According to an embodiment of the present invention, the other end of the catheter is provided with a tapered soft hole plug, through which the guide wire is protruded, and the diameter of the soft hole plug is the same as that of the guide wire. diameter matches.

According to an embodiment of the present invention, the port at the curved end of the catheter is provided with at least two arc-shaped notches.

According to an embodiment of the present invention, marking lines for measuring the length and/or indicating the rotation angle of the catheter are provided on the outer wall along the length direction of the catheter.

According to an embodiment of the present invention, one end of the guide wire that is away from the curved portion of the catheter is connected with a ring for hooking.

According to an embodiment of the present invention, the catheter is bent at an angle of 25-35 degrees, and the length of the bent portion is 3-7 mm.

According to an embodiment of the present invention, the catheter is a silicone tube, and the guide wire is a hard guide wire.

The double J tube extractor provided by the present invention adopts the structure of taking the guide wire inside the catheter, extends into the urethra through the catheter, extends into the guide wire sleeve to take the double J tube, replaces the bladder urethroscope and foreign body removal forceps, and is relatively hard The scope is softer, smaller, and more comfortable. Compared with the clamping method, the error rate of the lapping method is lower, which can effectively shorten the time spent on taking out the double J tube, reduce the pain of the patient, and reduce the cost.

Description of drawings

Fig. 1 is the structural representation of double J tube;

Fig. 2 is a schematic structural view of a double J tube extractor provided by an embodiment of the present invention;

3 is a schematic structural view of a port at the bent end of a double J tube extractor provided by an embodiment of the present invention;

Fig. 4 is a schematic structural diagram of a catheter and a marking line provided by an embodiment of the present invention.

In Figure 1-4, the numbers indicate:

1-Double J tube, 2-Catheter, 3-Take guide wire, 4-Water injection port, 5-Rubber plug, 6-Soft hole plug, 7-Arc notch, 8-Marking line, 9-Ring.

Detailed ways

The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 2, it is a schematic structural diagram of a double J tube extractor provided by the embodiment of the present invention, including a catheter 2 and a guide wire 3, the guide wire 3 is set in the catheter 2, and the guide wire is drawn 3 can be extended from both ends of the catheter 2, and the guide wire 3 is a closed circular guide wire, which is used to draw the double J tube 1, and the catheter 2 plays a supporting role, and is used to assist the guide wire 3 to extend into the bladder through the urethra middle.

In addition, since the double J tube 1 is located on the side of the bladder after implantation, it is not directly aligned with the urethral opening, and the commonly used foreign body removal forceps are straight in shape, and the double J tube needs to be rotated in the bladder to grasp the double J tube, but This operation causes pain to the patient. Therefore, one end of the catheter 2 is bent to facilitate the use of the catheter 2 to guide the guide wire 3 to take the double J tube. The angle of the bend is usually 25-35 degrees according to the actual situation, preferably 30 degrees, and the length of the bend can be set to 3-7 mm, preferably 5 mm.

The catheter 2 can be made of silica gel, which is soft and not easy to damage the urethra. Its length and diameter can be selected from 6Fr, 8Fr, 10Fr, 12Fr, 14Fr, 16Fr and 18Fr. The guidewire 3 can be selected from a polymer material that is hard, has a certain toughness, and has strong chemical stability, and can be cut with a sharp instrument, so that the size of the closed ring extending out from one end of the catheter 2 can be adjusted conveniently when the guide wire is drawn.

When pulling out the double J tube, if there is no urine stored in the bladder, the bladder will shrink and the space in the bladder will become smaller, which is not conducive to the pulling operation. Therefore, a certain amount of liquid can be filled into the bladder to make the bladder filling. Therefore, a water injection port 4 is provided on the side wall of the other end of the conduit 2 , and the water injection port 4 extends to the outside of the conduit 2 , and the water injection port 4 is provided with a rubber plug 5 . When it is necessary to fill the bladder with liquid (such as physiological saline), open the rubber stopper 5, connect the water injection port 4 with a water injector or other water injection device, fill the bladder with water through the catheter 2, and make the bladder full, which is convenient for taking out the double J Tube and observation under color Doppler ultrasound.

In order to ensure that the urine in the bladder or the above-mentioned liquid filled in the bladder will not flow out with the other end of the catheter 2, and at the same time enable the sleeve guide wire 3 to freely enter and exit the two ends of the catheter 2, the structure of the other end of the catheter 2 is optimized .

The end surface of the other end of the catheter 2 is concaved into a concave surface, and the concave surface is provided with a through hole for the sleeve to take the guide wire 3, and the diameter of the through hole matches the diameter of the sleeve to take the guide wire, and the concave shape can be conical, funnel Shape or other shapes are not limited here.

In addition, a soft hole plug 6 can also be set at the other end of the catheter 2, the soft hole plug 6 is set to a conical shape, and the guide wire 3 is stretched out through the hole at the center of the soft hole plug 6. The aperture of the soft hole plug 6 is the same as that of the sleeve. Match the diameter of the guide wire 3. After taking out the guide wire 3 and taking out the double J tube 1, continue to pull the guide wire 3 so that the double J tube 1 enters the catheter 2. At this time, if you need to take out the double J tube 1 through the catheter 2, you can remove the soft hole Plug 6, and then take out the double J tube 1.

After the guide wire 3 is sleeved, the double J tube 1 is drawn into the catheter 2. Since the end of the double J tube 1 is coiled, if the curled part of the double J tube 1 is If the size is too large, even if the catheter 2 is made of soft material, the double J tube 1 cannot be pulled into the catheter 2 because the curled part of the double J tube 1 is too large. Therefore, as shown in Figure 3, for this The embodiment of the invention provides a schematic diagram of the structure of the port at the curved end of a double J tube extractor. The port at the curved end of the catheter 2 is provided with at least two arc-shaped notches 7, which facilitates further expansion of the port of the catheter 2 and facilitates the use of a guide wire 3 Pull the double J tube in.

From the above, after the double J tube 1 is implanted in the bladder, it is located on one side of the bladder and is not directly aligned with the urethral opening. Therefore, when the double J tube extractor provided by the embodiment of the present invention is used to extract the double J tube 1, it can be Under the guidance of the color Doppler ultrasonic diagnostic instrument, by rotating the catheter 2 and adjusting the protruding length of the catheter 2 to determine the best position to take the double J tube 1, in order to facilitate the measurement of the rotation angle and the protruding length, as As shown in Figure 4, it is a schematic structural view of the catheter and the marking line provided by the embodiment of the present invention, the outer wall along the length direction of the catheter 2 is provided with a marking line 8 for measuring the length and/or indicating the rotation angle of the catheter 2, and the marking line 8 can be set On the side of the outer wall of the catheter 2 facing away from the curved part, it can also be arranged on the side of the outer wall of the catheter 2 facing the curved part. In particular, marking lines 8 are provided on both sides of the outer wall of the catheter 2 facing away from and facing the curved part. Line 8 is scaled in black and white, and a mark of another color is set every 5 cm, so as to further determine the length of catheter 2 protruding.

When using the guide wire 3 to cover the double J tube 1, it is necessary to adjust the strength of pulling the double J tube 1 according to the actual feeling of the patient. The taken ring 9 is used to connect a spring scale or other devices for measuring the tension, and monitor the strength of pulling the double J tube 1 in real time.

During actual operation, the curved end of the double-J tube extractor provided by the embodiment of the present invention is inserted into the urethra of the patient, and under the guidance of the color Doppler ultrasonic diagnostic instrument, the position of the port of the curved end and the double-J tube is adjusted, and then through the catheter 2. Extend the port of the bent end and take the guide wire 3. Take the double J tube and pull the double J tube into the catheter 2. If the space in the bladder is small and it is not conducive to the sleeve, open the water injection port 4 on the catheter 2 and fill it After filling the bladder with normal saline, the double J tube is pulled out, and finally the catheter 2 is withdrawn to complete the operation of taking out the double J tube.

To sum up, the double J tube extractor provided by the present invention adopts the structure of a guide wire built into the catheter, which is inserted into the urethra through the catheter, and the guide wire is sleeved to take out the double J tube, replacing the bladder urethroscope and foreign body removal forceps , to reduce the volume of the instrument, and the error rate of the sleeve extraction method is lower than that of the clamping method, which can effectively shorten the time spent on obtaining the double J tube, reduce the pain of the patient, and reduce the cost.

Claims (9)

1. A double J tube extractor is characterized in that it comprises: a catheter (2) and a set guide wire (3), one end of the catheter (2) is bent and set, and the guide wire (3) is set It is inside the catheter (2) and can protrude from both ends of the catheter (2), and the guide wire (3) is a closed loop guide wire. 2. The double J-tube extractor according to claim 1, characterized in that, the side wall at the other end of the conduit (2) is provided with a water injection port (4), and the water injection port (4) extends to the conduit In addition to (2), the water injection port (4) is provided with a rubber plug (5). 3. The double J-tube extractor according to claim 1, characterized in that, the end surface of the other end of the catheter (2) is concaved into a concave surface, and the concave surface is provided with a guide wire (3) for extending the sleeve. The diameter of the through hole matches the diameter of the set guide wire (3). 4. The double J-tube extractor according to claim 1, characterized in that, the other end of the catheter (2) is provided with a tapered soft hole plug (6), and the set guide wire (3) passes through the The soft hole plug (6) protrudes, and the aperture of the soft hole plug (6) matches the diameter of the guide wire (3). 5. The double J-tube extractor according to claim 1, characterized in that at least two arc-shaped notches (7) are provided at the port at the bent end of the catheter (2). 6. The double J tube extractor according to claim 1, characterized in that, the outer wall along the length direction of the catheter (2) is provided with marking lines for measuring the length and/or indicating the rotation angle of the catheter (2) (8). 7. The double J-tube extractor according to claim 1, characterized in that, one end of the guide wire (3) far away from the curved portion of the catheter (2) is connected with a ring for hooking ( 9). 8. The double J-tube extractor according to claim 1, characterized in that, the bend angle of the conduit (2) is 25-35 degrees, and the length of the bend is 3-7 mm. 9. The double J tube extractor according to claim 1, characterized in that, the catheter (2) is a silicone tube, and the guide wire (3) is a hard guide wire that can be cut off with a sharp instrument.