A detection device for the placement position of the ends of a double-J stent used in urological surgery

Abstract

The present invention is a detection device for the placement position of the end of a double-J tube used in urological surgery. It includes a forceps rod, forceps handles, a connecting rod, a dial, a first magnetic sheet, a second magnetic sheet, and a sliding rod. One end of the double-J tube is provided with a second magnetic sheet. A sliding rod is slidably connected inside the forceps rod. The forceps rod is symmetrically provided with forceps handles at one end. A connecting rod is hinged between the forceps handles and the sliding rod. A dial and a connecting piece are provided at the end of the forceps rod away from the forceps handles. The dials are symmetrically arranged. The dials are connected to the sliding rod through a rack and pinion mechanism. A fixing platform is provided at the end of the connecting piece away from the forceps handles. A first through hole and a second through hole are cooperatively opened on the dial and the fixing platform. A dial rod is slidably connected in the first through hole and the second through hole. First magnetic sheets are provided at the inner ends of the two dial rods facing each other. The first magnetic sheets are placed in the grooves of the fixing frame. The present invention detects and judges the insertion position of the double-J tube through the adsorption action of the first magnetic sheet and the second magnetic sheet, avoiding the injection of methylene blue solution into the bladder. The detection process is simpler and the patient is more likely to accept it.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to a detecting device for the placement position of the end of a double-J tube for urological surgery. Background Art

[0002] Double-J tubes are widely used in urological surgeries and are applicable to upper urinary tract surgeries such as kidney stones, ureteral stones, hydronephrosis, kidney transplantation, and benign tumors of the kidney and ureter, as well as in the treatment processes such as lithotripsy by a lithotripter and dilation of ureteral strictures. After it is implanted into the ureter, it can play an important role in draining urine, preventing ureteral stricture, and adhesion blockage. Currently, when inserting a double-J tube, to ensure that the catheter reaches the position, before placing the double-J tube, methylene blue solution is injected into the bladder, the double-J catheter is coated with paraffin oil, and according to the curvature of the catheter, one end is inserted into the bladder according to the estimated length. After the guide wire is removed, if methylene blue solution overflows, it is confirmed that it has entered the bladder, or by squeezing the lower abdomen, if methylene blue solution flows out from the side holes, it is confirmed that it has entered the bladder, and then the other end is inserted into the renal pelvis. Because methylene blue solution needs to be injected into the bladder, the detection process is relatively cumbersome, and the patient has to bear a certain amount of physiological and psychological pressure. Therefore, it is necessary to design a detecting device for the placement position of the end of a double-J tube for urological surgery. Summary of the Invention

[0003] The technical problem to be solved by the present invention is, aiming at the above-mentioned disadvantages of the prior art, to propose a detecting device for the placement position of the end of a double-J tube for urological surgery, including a forceps rod, a forceps handle, a connecting rod, a dial, a first magnetic sheet, and a sliding rod. The forceps rod is cylindrical, a square chute is opened along the axial direction of the forceps rod, a sliding rod is slidably connected in the chute, forceps handles are symmetrically arranged on both sides of one end of the forceps rod, the forceps handles are hinged to the forceps rod, connecting rods are symmetrically arranged on both sides of the end of the sliding rod close to the forceps handle, one end of the connecting rod is hinged to the sliding rod, and the other end of the connecting rod is hinged to the forceps handle; racks are symmetrically arranged on both sides of the end of the sliding rod far from the forceps handle;

[0004] A connecting piece is welded to the end of the forceps rod far from the forceps handle. The connecting piece includes a first plate and a second plate. The first plate is welded to the forceps rod. A second plate is provided at the end of the first plate far from the forceps rod. The included angle between the first plate and the second plate is between 130° and 150°. An arc-shaped opening is provided at the end of the second plate far from the first plate. Arc-shaped fixing frames are symmetrically arranged at both ends of the second plate where the opening is provided, and the openings of the two fixing frames face each other. The ureter passes through the middle of the two fixing frames;

[0005] On both sides of one end of the first plate away from the second plate, there are symmetrically arranged paddles. The paddle includes a circular ring, a straight piece, and an arc piece. On both sides of one end of the first plate away from the second plate, there are symmetrically arranged circular rings. The circular rings are connected to the first plate through pin shafts, enabling the paddle to be rotatably connected to the first plate. On the opposite surfaces of the two circular rings, there are external teeth that cooperate with the rack. At one end of the circular ring away from the pliers rod, there is a straight piece. On the surface of the straight piece away from the circular ring, there is an arc piece that is consistent with the radian of the fixed frame. The arc piece rotates through the cooperation of the rack and the external teeth and is limited by the fixed frame;

[0006] In the middle position of the back surface of the arc piece, there is a cylindrical boss. Along the axis direction of the boss, there is a square first through hole. On the side of the fixed frame close to the ureter, there is an arc-shaped groove. At the bottom of the groove, there is a second through hole that cooperates with the first through hole. In the groove, there is a first magnetic attraction piece. At one end of the first magnetic attraction piece away from the ureter, there is a square shifting rod, and the shifting rod is slidably connected to the first through hole and the second through hole. At one end of the shifting rod away from the ureter, there is a retaining piece threadedly connected;

[0007] At one end of the pliers rod away from the ureter, there is a cylindrical detection handle;

[0008] At one end in the length direction of the double-J tube, there is a second magnetic attraction piece that cooperates with the first magnetic attraction piece.

[0009] In this technical solution, when the double-J tube is placed in the ureter but it is not certain whether it has entered the bladder, the position of the double-J tube can be detected through the cooperation of the first magnetic attraction piece and the second magnetic attraction piece on the double-J tube. When the device detects on the ureter, if the first magnetic attraction piece moves due to being adsorbed, it indicates that the double-J tube has not been placed in the bladder, and vice versa. The first magnetic attraction piece is placed in the groove of the fixed frame. When adsorbed, it will leave the groove, facilitating the judgment of whether the first magnetic attraction piece is attracted. The fixed frame is used to limit the rotation stroke of the paddle to prevent the paddle from contacting the ureter and damaging the ureter. When the first magnetic attraction piece is attracted and leaves the groove, the square shifting rod ensures that the first magnetic attraction piece will not rotate, ensuring that the first magnetic attraction piece can still enter the groove when being pushed back by the paddle. The retaining piece is used to limit the stroke of the first magnetic attraction piece and ensure that the paddle pushes the first magnetic attraction piece back into the groove. The rotation of the paddle adopts a gear-rack structure, which is small in size and convenient to operate. During detection, hold the detection handle for inspection to avoid the natural shaking of the medical staff's hand causing the movement of the pliers handle, thereby driving the sliding rod, paddle, and first magnetic attraction piece to move and causing misjudgment. When the detection is completed and the device is reset, only need to operate the pliers rod to push the first magnetic attraction piece back into the groove. There is an included angle of 130° - 150° between the first plate and the second plate, reducing the space occupied by the device during use and making it more convenient to observe while operating.

[0010] The further limited technical solution of the present invention is:

[0011] The aforesaid detection handle is provided with an anti-slip platform for anti-slip, which increases the friction between the hand and the detection handle during the detection process, avoiding accidents caused by the device slipping off.

[0012] One end of the aforesaid forceps handle far from the forceps rod is provided with finger holes for facilitating the opening and closing of the forceps handle, which is convenient for medical staff to tightly hold the forceps handle with their fingers and makes the operation more convenient.

[0013] On the side of the aforesaid first magnetic sheet close to the ureter, a medical sponge cushion layer for protecting the ureter is attached, avoiding damage to the ureter caused by the mistakes of medical staff or the direct contact between the first magnetic sheet and the ureter during the detection process.

[0014] The beneficial effects of the present invention are as follows: When detecting the position of the double-J stent, the position of the double-J stent is detected through the cooperation of the first magnetic sheet and the second magnetic sheet. It is not necessary to inject methylene blue solution into the bladder, and the patient is more likely to accept it. Whether the first magnetic sheet is attracted by the second magnetic sheet and leaves the groove is used to judge the position of the double-J stent, which is simple and fast. Compared with pressing the patient's abdomen or pulling out the guide wire to observe the methylene blue solution, it is more acceptable to the patient. The fixing frame limits the rotation stroke of the dial, avoiding the dial contacting the ureter and damaging the ureter. The square dial rod ensures that the first magnetic sheet will not rotate after leaving the groove, ensuring that the first magnetic sheet can still enter the groove when it is pushed back by the dial. The stop piece is used to limit the stroke of the first magnetic sheet and ensure that the dial pushes the first magnetic sheet back into the groove. The rotation of the dial adopts a gear-rack structure, which is small in size and convenient in operation. During the detection, hold the detection handle for inspection, avoiding the natural shaking of the medical staff's hand causing the movement of the forceps handle, thereby driving the slide rod, the dial and the first magnetic sheet to move and causing misjudgment. When the detection is completed and the device is reset, only by operating the forceps rod, the first magnetic sheet can be pushed back into the groove. An included angle of 130° - 150° is provided between the first plate and the second plate, reducing the space occupied by the device during use and making it more convenient to observe during operation. The detection handle is provided with an anti-slip platform, which increases the friction between the hand and the detection handle during the detection process, avoiding accidents caused by the device slipping off. Finger holes are opened on the forceps rod, which is convenient for medical staff to tightly hold the forceps handle with their fingers and makes the operation more convenient. On the side of the first magnetic sheet close to the ureter, a medical sponge cushion layer for protecting the ureter is attached, avoiding damage to the ureter caused by the mistakes of medical staff or the direct contact between the first magnetic sheet and the ureter during the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an axonometric view of the present invention;

[0016] Figure 2 is Figure 1 a partial enlarged view of A in

[0017] Figure 3 is a right view of the present invention;

[0018] Figure 4 for Figure 3 Sectional view at the middle BB;

[0019] Figure 5 It is a partial enlarged view of the C in the present invention;

[0020] Figure 6 It is a front view of the double J tube in the present invention;

[0021] Figure 7 It is a schematic diagram of the use of the present invention;

[0022] Among them: 1-clamp rod, 1-1-slide groove, 1-2-fixed frame, 1-3-groove, 1-4-second through hole, 1-5-detection handle, 1-6-anti-slip platform, 2-clamp handle, 2-1-finger hole, 3-connecting rod, 4-pick, 4-1-circular ring, 4-2-boss, 4-3-first through hole, 4-4-straight piece, 4-5-arc piece, 4-6-external teeth, 5-first magnetic piece, 5-1-pick rod, 5-2-sponge cushion, 6-slide rod, 6-1-rack, 7-second magnetic piece, 8-connecting piece, 8-1-first plate, 8-2-second plate, 8-3-opening, 9-blocking piece, 10-ureter. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance;

[0025] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1

[0026] A detection device for detecting the placement position of the end of a double-J tube used in urological surgery, comprising a detection device body, characterized in that: the detection device body includes a forceps rod 1, a forceps handle 2, a connecting rod 3, a dial 4, a first magnetic sheet 5 and a sliding rod 6. The forceps rod 1 is cylindrical, and a square chute 1-1 is provided along the axial direction of the forceps rod 1. A sliding rod 6 is slidably connected in the chute 1-1. On both sides of one end of the forceps rod 1, forceps handles 2 are symmetrically provided. The forceps handles 2 are hinged to the forceps rod 1. On both sides of one end of the sliding rod 6 close to the forceps handle 2, connecting rods 3 are symmetrically provided. One end of the connecting rod 3 is hinged to the sliding rod 6, and the other end of the connecting rod 3 is hinged to the forceps handle 2; on both sides of the end of the sliding rod 6 away from the forceps handle 2, racks 6-1 are symmetrically provided.

[0027] A connecting piece 8 is welded to the end of the forceps rod 1 away from the forceps handle 2. The connecting piece 8 includes a first plate 8-1 and a second plate 8-2. The first plate 8-1 is welded to the forceps rod 1. A second plate 8-2 is provided at the end of the first plate 8-1 away from the forceps rod 1. The included angle between the first plate 8-1 and the second plate 8-2 is between 130° and 150°. An arc-shaped opening 8-3 is provided at the end of the second plate 8-2 away from the first plate 8-1. Arc-shaped fixing frames 1-2 are symmetrically provided at both ends of the second plate 8-2 where the opening 8-3 is provided, and the openings of the two fixing frames 1-2 face each other. The ureter 10 passes through the middle of the two fixing frames 1-2.

[0028] Dials 4 are symmetrically provided on both sides of the end of the first plate 8-1 away from the second plate 8-2. The dial 4 includes a circular ring 4-1, a straight piece 4-4 and an arc piece 4-5. Circular rings 4-1 are symmetrically provided on both sides of the end of the first plate 8-1 away from the second plate 8-2. The circular rings 4-1 are connected to the first plate by pins, so that the dial 4 is rotatably connected to the first plate 8-1. External teeth 4-6 matching with the rack 6-1 are provided on the opposite surfaces of the two circular rings 4-1. A straight piece 4-4 is provided at the end of the circular ring 4-1 away from the forceps rod 1. An arc piece 4-5 having the same radian as the fixing frame 1-2 is provided on the surface of the straight piece 4-4 away from the circular ring 4-1. The arc piece 4-5 rotates through the cooperation of the rack 6-1 and the external teeth 4-6 and is limited by the fixing frame 1-2.

[0029] On the middle position of the back side of the arc piece 4-5, there is a cylindrical boss 4-2. A square first through hole 4-3 is opened along the axial direction of the boss 4-2. On the side of the fixing frame 1-2 close to the ureter 10, an arc-shaped groove 1-3 is opened. At the bottom of the groove 1-3, a second through hole 1-4 matching the first through hole 4-3 is opened. A first magnetic attraction piece 5 is arranged in the groove 1-3. At one end of the first magnetic attraction piece 5 far from the ureter 10, there is a square dial rod 5-1. And the dial rod 5-1 is slidably connected with the first through hole 4-3 and the second through hole 1-4. A retaining piece 9 is threadedly connected to the end of the dial rod 5-1 far from the ureter 10.

[0030] At the end of the forceps rod 1 far from the ureter 10, there is a cylindrical detection handle 1-5. At one end in the length direction of the double-J tube, there is a second magnetic attraction piece 7 matching the first magnetic attraction piece 5. On the detection handle 1-5, there is an anti-slip platform 1-6 for anti-slip, which increases the friction between the hand and the detection handle during the detection process, avoiding accidental occurrence caused by the device slipping off. At the end of the forceps handle 2 far from the forceps rod 1, there is a finger hole 2-1 for facilitating the opening and closing of the forceps handle 2, which is convenient for medical staff's fingers to tightly hold the forceps handle and makes the operation more convenient. On the side of the first magnetic attraction piece 5 close to the ureter 10, there is a medical sponge cushion layer 5-2 for protecting the ureter 10, avoiding damage to the ureter 10 caused by medical staff's mistakes or the direct contact between the first magnetic attraction piece and the ureter 10 during the detection process.

[0031] The working process of this embodiment is as follows: When the double-J tube is inserted into the patient's ureter and it is necessary to determine whether the double-J tube is inserted into the bladder, the medical staff puts their fingers into the finger holes, operates the opening and closing of the forceps handle, makes the dial piece dial the first magnetic attraction piece into the groove, then the fingers leave the finger holes, holds the detection handle with the hand, places the ureter between the two fixing parts, and moves along the length direction of the ureter towards the bladder to detect whether the second magnetic attraction piece on the double-J tube enters the bladder. If the first magnetic attraction piece moves due to the adsorption of the second magnetic attraction piece and approaches the ureter, it means that the double-J tube is not placed in the bladder. On the contrary, if the device is moved to the bladder and the first magnetic attraction piece does not move, it means that the second magnetic attraction piece on the double-J tube enters the bladder, that is, the double-J tube is placed in the bladder. At this time, hold the finger holes with the fingers, operate the opening and closing of the forceps handle, make the dial piece dial the first magnetic attraction piece back into the groove, and finally remove the device from the ureter and place it in a designated container for the next use.

[0032] The above embodiments are only used to illustrate the technical idea of the present invention and cannot limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A detecting device for detecting the placement position of the end of a double-J tube for urological surgery, comprising a main body of the detecting device. It is characterized in that: The main body of the detecting device includes a forceps rod (1), a forceps handle (2), a connecting rod (3), a dial (4), a first magnetic sheet (5) and a sliding rod (6). The forceps rod (1) is cylindrical. A square sliding groove (1-1) is formed in the forceps rod (1) along its axial direction. A sliding rod (6) is slidably connected in the sliding groove (1-1). Forceps handles (2) are symmetrically arranged on both sides of one end of the forceps rod (1). The forceps handle (2) is hinged to the forceps rod (1). Connecting rods (3) are symmetrically arranged on both sides of one end of the sliding rod (6) close to the forceps handle (2). One end of the connecting rod (3) is hinged to the sliding rod (6), and the other end of the connecting rod (3) is hinged to the forceps handle (2). Rack teeth (6-1) are symmetrically arranged on both sides of the end of the sliding rod (6) away from the forceps handle (2). A connecting piece (8) is welded to the end of the forceps rod (1) away from the forceps handle (2). The connecting piece (8) includes a first plate (8-1) and a second plate (8-2). The first plate (8-1) is welded to the forceps rod (1). A second plate (8-2) is arranged at the end of the first plate (8-1) away from the forceps rod (1). The included angle between the first plate (8-1) and the second plate (8-2) is between 130° and 150°. An arc-shaped opening (8-3) is arranged at the end of the second plate (8-2) away from the first plate (8-1). Arc-shaped fixing frames (1-2) are symmetrically arranged at both ends of the second plate (8-2) where the opening (8-3) is formed, and the openings of the two fixing frames (1-2) face each other. The ureter (10) passes through the middle of the two fixing frames (1-2). Dials (4) are symmetrically arranged on both sides of the end of the first plate (8-1) away from the second plate (8-2). The dial (4) includes a ring (4-1), a straight piece (4-4) and an arc piece (4-5). Rings (4-1) are symmetrically arranged on both sides of the end of the first plate (8-1) away from the second plate (8-2). The ring (4-1) is connected to the first plate through a pin shaft, so that the dial (4) is rotatably connected to the first plate (8-1). External teeth (4-6) matching with the rack teeth (6-1) are arranged on the opposite surfaces of the two rings (4-1). A straight piece (4-4) is arranged at the end of the ring (4-1) away from the forceps rod (1). An arc piece (4-5) having the same radian as the fixing frame (1-2) is arranged on the surface of the straight piece (4-4) away from the ring (4-1). The arc piece (4-5) rotates through the cooperation of the rack teeth (6-1) and the external teeth (4-6) and is limited by the fixing frame (1-2). A cylindrical boss (4-2) is provided at the middle position on the opposite side of the arc-shaped piece (4-5). A square first through hole (4-3) is opened along the axial direction of the boss (4-2). An arc-shaped groove (1-3) is opened on the side of the fixing bracket (1-2) close to the ureter (10). A second through hole (1-4) matching the first through hole (4-3) is opened at the bottom of the groove (1-3). A first magnetic sheet (5) is arranged in the groove (1-3). A square dial rod (5-1) is arranged at one end of the first magnetic sheet (5) far from the ureter (10). The dial rod (5-1) is slidably connected to the first through hole (4-3) and the second through hole (1-4). A retaining piece (9) is threadedly connected to the end of the dial rod (5-1) far from the ureter (10). A cylindrical detection handle (1-5) is provided at the end of the forceps rod (1) far from the ureter (10). A second magnetic sheet (7) matching the first magnetic sheet (5) is provided at one end of the double-J tube in the length direction.

2. A device for detecting the placement position of the end of a double-J tube for urological surgery according to claim 1, characterized in that: An anti-slip platform (1-6) for anti-slip is provided on the detection handle (1-5).

3. A device for detecting the placement position of the end of a double-J tube for urological surgery according to claim 1, characterized in that: Finger holes (2-1) for facilitating the opening and closing of the forceps handle (2) are provided at the end of the forceps handle (2) far from the forceps rod (1).

4. A device for detecting the placement position of the end of a double-J tube for urological surgery according to claim 1, characterized in that: A medical sponge cushion layer (5-2) for protecting the ureter (10) is attached to the side of the first magnetic sheet (5) close to the ureter (10).

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