CN212490138U

CN212490138U - Ureteral catheter capable of guiding laser fiber to bend

Info

Publication number: CN212490138U
Application number: CN202021995107.1U
Authority: CN
Inventors: 李攀
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-02-09
Anticipated expiration: 2030-09-14

Abstract

The utility model relates to a flexible ureteral catheter device of laser optic fibre that can guide that laser rubble was used under scope. Comprises a ureteral catheter, a steel wire (2), a first sleeve, a second sleeve, a screw nail (8) and an adhesive tape (1). And the second sleeve is moved backwards, so that the tip of the ureteral catheter is pulled to be bent, and the aim of guiding the direction change of the laser optical fiber in the ureteral catheter is fulfilled.

Description

Ureteral catheter capable of guiding laser fiber to bend

Technical Field

The utility model relates to a medical appliance, in particular to a lithotriptor for percutaneous nephroscope, large through scope and ureteroscope. The laser fiber laser is suitable for clinicians to change the direction of the laser fiber, improve the calculus removal rate, and reduce bleeding and damage caused by the swing of the endoscope body, even the loss of a channel.

Background

At present, the minimally invasive lithotripsy mainly comprises percutaneous nephroscope, ureteroscope, Shuotong scope, ureteroscope and other endoscopic lithotripsy techniques in clinic. For example, when percutaneous nephroscope and ureteroscope are used for laser lithotripsy, even when lithotripsy is performed under a soft lens, because the optical fiber is fixed at one position, sometimes a lithotripsy blind area still exists, the body position needs to be changed, the direction of an endoscope body needs to be changed by a large angle, the endoscope body is easily damaged, and side damage to the kidney and the ureter, such as large bleeding caused by blood vessel damage, is easily caused. Meanwhile, after the direction of the lens body is changed, sometimes the calculus can be seen because the position of the calculus is deviated, but the calculus cannot be hit because the optical fiber cannot flexibly rotate, so that residual calculus is generated. The ureteroscope, nephroscope, Shuotong scope, etc. that we used clinically can all put into 3F, 4F, 5F ureter pipe, wherein we have laser fiber such as 500um, 365um, 275u, 200u all can pass through. Therefore, the aim of bending the laser optical fiber can be achieved by changing the direction of the ureteral catheter. Therefore, the method is urgently to be innovated on the basis of the existing materials.

Disclosure of Invention

The utility model aims at providing a lithotripsy is with guiding crooked ureteral catheter of laser optic fibre. The direction of the catheter can be flexibly changed under the direct vision field of a ureteroscope or a nephroscope according to any angle of clinical needs, and the direction of the laser optical fiber arranged in the catheter is changed, so that the optical fiber can easily reach the calculus and break the calculus. The calculus facing to the periphery of the visual field in the operation process does not need to swing the lens body too much. Avoid the damage that the mirror body too much swings and bring, reduce the incomplete stone rate. Meanwhile, the optical fiber can be applied to the existing laser optical fiber, nephroscope and ureteroscope without additionally configuring equipment.

The utility model discloses the component is as follows: the ureteral catheter comprises a steel wire, a first sleeve, a second sleeve, a threaded nail and an adhesive tape.

The ureteral catheter is made of conventional material polyvinyl chloride, both the start end and the stop end of the ureteral catheter are hollow, and laser fibers can pass through the ureteral catheter. A small hole is arranged in the first sleeve for the steel wire 2 to pass through. The first sleeve and the second sleeve are provided with sleeve holes for the catheter of the ureter to pass through. Wherein the sleeve is fixed with the ureteral catheter by fixing glue. The second sleeve and the ureteral catheter are in an active state, and are convenient to pull. The tip of the ureteral catheter is fixed with the tip of the steel wire 2, and the adhesive tape 1 is fixed with the ureteral catheter at a position about 1cm away from the tip of the ureteral catheter. The adhesive tape 1 and the catheter are provided with a small hole gap for the steel wire 2 to pass through. A screw 8 is arranged in the sleeve II and used for fixing the other end of the steel wire.

The utility model discloses a theory of operation is:

when carrying out holmium laser lithotripsy under endoscopes such as ureteroscope, major open mirror, percutaneous nephroscope. The ureteroscope, the large diameter endoscope and the nephroscope can pass through a 5F or 4F ureteral catheter, and the catheter can be provided with a laser fiber. Sometimes, the position of the calculus is deviated, but the current laser fiber can not change the direction, and sometimes, the position of the tip of the fiber cannot be adjusted to the surface of the calculus to enable the calculus to go upwards through swinging the lens body. At the moment, the laser optical fiber is arranged in the ureteral catheter, and the direction of the laser optical fiber is changed by changing the direction of the tip of the ureteral catheter. Wherein the tip of the ureteral catheter is fixed by a steel wire 2, and then an adhesive tape 1 is fixed at a position 1-2cm away from the tip of the ureteral catheter, which is a force application point. By pulling the steel wire backwards, the tip of the ureteral catheter is bent under the support of the force application point adhesive tape due to the shortening of the steel wire, so that the purpose of changing the direction of the ureteral catheter and the laser optical fiber in the ureteral catheter is achieved. When the ureteral catheter and the laser fiber are required to be withdrawn, the steel wire is fed forwards, and the ureteral catheter is restored to be in a straight state and can be withdrawn.

The utility model discloses simple to use, convenient operation, the adjustment direction is convenient. Meanwhile, the optical fiber can be used under the existing laser optical fiber, nephroscope, ureteroscope and even ureteroscope soft lens. Through changing the optical fiber direction, the flexibility of the stone breaking is improved, the residual stone rate is reduced, and the stone breaking time is shortened.

Drawings

FIG. 1 is a perspective view of the present invention

Figure 2 is a perspective view of the ureteral catheter, the adhesive tape 1 and the steel wire 2 of the utility model

FIG. 3 is a perspective view of the first sleeve, the inner sleeve 3, the first horizontal groove 4 and the semi-circular handle 5 of the present invention

FIG. 4 is a perspective view of the second sleeve, the second inner sleeve 6, the second horizontal groove 7, the screw 8 and the semi-circular handle 9 of the present invention

Fig. 5 is a perspective view of the screw 8 of the present invention

Detailed Description

Referring to fig. 1 and 2, the catheter tube is made of conventional polyethylene material, and has a length of 50-55cm and diameters of 3F, 4F and 5F. The ureteral catheter is hollow. The laser fiber is convenient to put in. Wherein an adhesive tape 1 is arranged at a position about 1-2cm away from the tip of the ureter, and a steel wire 2 can pass through the adhesive tape. Wherein the tip of the steel wire 2 is fixed with the catheter by adhesive. Then the surface is attached to the ureteral catheter, passes through the gap between the adhesive tape 1 and the ureteral catheter, and then passes through the horizontal grooves of the first sleeve and the second sleeve in sequence to be fixed in the screw nail 8.

Referring to fig. 1 and 3, a sleeve, generally made of a conventional plastic material, having a length of about 3cm., has a cannula 3 therein to facilitate insertion of the ureteral catheter. The first sleeve is fixed on the ureter catheter in the position 40-45cm away from the ureter tip by using fixing adhesive. The surface of the steel wire is covered with a horizontal groove I4, and a gap is arranged in the horizontal groove I to facilitate the steel wire 2 to pass through. And a semi-circular handle 5 is adhered to the surface of the handle through fixing glue. The finger is put into when convenient operation.

Referring to fig. 1 and 4, the second sleeve is also made of conventional plastic. About 5cm., in which a cannula 6 is placed, facilitating the insertion of the ureteral catheter. The cannula 6 is not fixed to the ureteral catheter. The surface of the steel wire is also covered with a horizontal groove II 7, the gap in the horizontal groove II 7 is convenient for the steel wire 2 to pass through, and the surface of the steel wire is stuck with a semicircular handle 9 which is convenient for fingers to put in during operation. The steel wire 2 passes through the second horizontal groove 7 and then is fixed with the screw 8.

As shown in fig. 1 and 5, the screw 8 is made of stainless steel material, has a length of 6mm and a diameter of 2mm, and belongs to the two parts of the sleeve. The screw 8 is fixed with the sleeve 6 and the horizontal groove 7 in a rotating way. And the steel wire 2 passing through the second horizontal groove 7 is pressed and fixed by rotating the screw.

Claims

1. A steerable laser fiber bend ureteral catheter, comprising: ureteral catheter, steel wire (2), sleeve one, sleeve two, screw nail (8), paste area (1) and constitute, its characterized in that ureteral catheter both ends are hollow, make things convenient for laser fiber to pass through, and wherein steel wire (2) are fixed with ureteral catheter tip, loop through and paste area (1), crouch groove one (4), crouch groove two (7), finally its end is fixed in sleeve two through screw nail (8).

2. The steerable laser fiber curved ureteral catheter of claim 1, wherein: a horizontal groove is formed in each of the first sleeve and the second sleeve, the steel wire (2) can conveniently pass through the horizontal groove, an adhesive tape (1) is arranged at a position which is about 1-2cm away from the tip of the ureteral catheter, and the steel wire (2) can be conveniently placed into the horizontal groove to form a force application fulcrum.

3. The steerable laser fiber curved ureteral catheter of claim 1, wherein: the first sleeve is fixed with the ureteral catheter at a position which is about 40-45cm away from the tip of the ureteral catheter, the second sleeve is not fixed with the ureteral catheter, and the purpose of drawing the steel wire (2) is achieved by moving the second sleeve backwards.