Ureteral stent external drainage device

Abstract

The utility model belongs to the technical field of drainage devices, and discloses a ureteral stent external drainage device which comprises a hard silicone tube arranged outside a patient body, part of the hard silicone tube is located in the patient body, and the liquid inlet end of the hard silicone tube is fixedly connected with a soft silicone tube. The liquid inlet end of the soft silicone tube extends to a pelvis ureter connecting part of a patient to the interior of the ureter along a preset puncture path, a channel for conveying liquid along the preset path is formed between the soft silicone tube and the hard silicone tube, and the diameter of the channel is not smaller than that of the puncture needle; the hard silicone tube is provided with a fixing piece used for fixing the hard silicone tube, the fixing piece is located outside a patient body, after the hard silicone tube and the soft silicone tube are placed in the pelvic ureter in the patient body in an operation, the wound of the connecting portion of the pelvic ureter matched in the operation is supported through the soft tube, and effusion is guided to be discharged through the soft silicone tube and side holes in the soft silicone tube. The device can be placed in the body of a patient for a long time, and the replacement frequency is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of drainage devices, and in particular relates to a ureteral stent external drainage device. Background Art

[0002] When hydronephrosis develops due to ureteropelvic junction (UPJ) stenosis, surgical treatment is required. During surgery, the UPJ is resected and sutured. After suturing, a stent is inserted to support the sutured junction, allowing conventional drainage of the newly formed UPJ. There are two main placement methods: internal drainage, in which a double-J stent is placed in the body. This stent serves as both an internal drainage and a ureteral stent, remaining in place for two to three months before removal via cystoscopic surgery. External drainage involves the placement of a ureteropelvic fistula, which is secured to the surface of the body and connected to a drainage bag. A silicone tube is then placed at one end of the ureteropelvic junction, acting as a ureteral stent. The other end is then percutaneously implanted and secured externally. Double-J stents are currently the most commonly used method of drainage in clinical practice because they do not affect activity and allow for rapid recovery.

[0003] However, during the actual operation, some children have problems with their own ureters. Not only is the ureteropelvic junction narrowed, but the middle and lower parts of the ureters may also be narrowed. Therefore, the double J tube cannot be placed. For cases where the double J tube cannot be placed, external drainage is often used in clinical work, that is, a ureteropelvic fistula tube is placed for fluid drainage, and the fistula tube is fixed to the body surface and connected to the drainage bag. One end of a silicone hose is placed at the ureteral junction to act as a ureteral stent, and the other end is implanted through the skin and fixed outside the body. However, this method requires the placement of two tubes on the body surface, and because the ureters of such patients are mostly long and narrow, the stent tube needs to be placed for two to three months. However, traditional external drainage stent tubes can generally only be retained for about ten days. They cannot be placed in the patient's body for a long time, nor can they be fixed on the body surface for a long time. They also have no drainage function, so the replacement frequency is high, which increases the patient's pain and financial burden. In addition, the traditional device is fixed by adhesive tape after being placed, but this method is not firm and there is a risk of tube detachment. It is also easy to pull the skin at the wound when removing it, further increasing the patient's pain. Utility Model Content

[0004] The purpose of the present utility model is to provide a ureteral stent external drainage device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a ureteral stent external drainage device, comprising a hard drainage part and a soft drainage part, the liquid inlet end of the hard drainage part is connected to the liquid outlet end of the soft drainage part, and the soft drainage part and the hard drainage part are inserted into the patient's body along a preset puncture path, the liquid inlet end of the soft drainage part extends to the inside of the patient's renal pelvis and ureter, and a channel for transporting liquid along the preset path is formed between the soft drainage part and the hard drainage part.

[0006] Preferably, the hard drainage part includes a hard silicone tube, the soft drainage part includes a soft silicone tube, and the infusion channel is formed between the hard silicone tube and the soft silicone tube.

[0007] Preferably, the hard silicone tube is provided with a fixing piece for fixing the hard silicone tube, and the fixing piece is outside the patient's body.

[0008] Preferably, a length mark is provided on the surface of the soft silicone tube.

[0009] Preferably, the fixing member includes two side plates and two adhesive portions, the two side plates are symmetrically fixedly connected to the two sides of the hard silicone tube, and the two side plates are symmetrically fixedly connected to the opposite sides of each other with two connecting belts, and one side of each of the two connecting belts is convex to form a plurality of oblique teeth;

[0010] The bonding part is provided with a slot for the connecting belt to be inserted into, and the inner wall of the slot is fixedly connected with a limiting tooth matching the slot.

[0011] Preferably, the adhesive portion comprises a fixing belt, one side of the fixing belt is symmetrically fixedly connected to two connecting frames, the other side is bonded with an adhesive layer, the side of the adhesive layer away from the fixing belt is bonded with a release film, and the slot is opened on the connecting frame.

[0012] Preferably, the free end of the connecting belt protrudes outward to form a conical head.

[0013] Preferably, a connecting piece is provided at one end of the hard silicone tube away from the soft silicone tube, and the connecting piece includes a first connecting part and a second connecting part that are detachably connected. The first connecting part is fixedly connected to the hard silicone tube, and the second connecting part is provided with a connecting elbow for connecting a drainage bag on the side away from the first connecting part.

[0014] Preferably, the first connecting portion includes a first connecting head, and the second connecting portion includes a second connecting head, wherein the second connecting head is recessed toward one side of the first connecting head to form a connecting groove, and two clamping plates are symmetrically fixedly connected to the inner wall of the connecting groove;

[0015] Two card slots matching the card plate are symmetrically formed on one side of the first connector facing the connecting slot.

[0016] Preferably, a sealing ring is provided on the circumference of the first connector.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) The present invention provides a hard silicone tube and a soft silicone tube. After the hard silicone tube and the soft silicone tube are inserted into the renal pelvis and ureter of the patient during surgery, the soft silicone tube and the side holes thereon are used to guide the drainage of the internal fluid of the renal pelvis and ureter. The soft silicone tube supports the wound at the ureteral connection site of the surgical anastomosis, so that the device can be placed in the patient's body for a relatively long time, playing the dual role of ureteral stent and renal pelvis drainage. The hard tube is firmly fixed to the body surface and has a long retention time, so the replacement frequency is low, which reduces the patient's pain and improves the patient's treatment experience.

[0019] (2) When the soft silicone tube and the hard silicone tube are placed in the patient's body, the present invention is bonded to the patient's body surface through the adhesive layer, and the connecting belt is pulled through the slot on the connecting frame. The limiting teeth inside the slot engage with the oblique teeth on the connecting belt, thereby fixing the hard silicone tube. After the device is placed, it does not need to be fixed as a whole by adhesive tape, avoiding the medical staff from pulling the skin at the wound when removing it, further reducing the patient's pain.

[0020] (3) The utility model can record the scale value of the skin outlet after surgery according to the length mark set on the surface of the soft silicone tube, and monitor the change of the value in real time. If the value of the skin outlet changes a lot, it means that the tube is out of place or the front drainage end is out of place, which is convenient for timely treatment; while reducing the difficulty of postoperative care, it makes postoperative care clearer and more concrete.

[0021] (4) The adhesive layer used in the present invention is bonded to the patient's body surface, and the connecting belt is pulled through the slot on the connecting frame and fixed. This fixing method is more suitable for young patients. Since young patients have less skin contact surface, a few obese patients have only a small fixation area, and children are prone to movement, the fixing method of the present invention is more flexible than the traditional adhesive plaster fixing method. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is one of the three-dimensional diagrams of the present utility model;

[0023] Figure 2 This is the second stereogram of the utility model;

[0024] Figure 3 This is the third stereogram of the present utility model;

[0025] Figure 4 This is the fourth stereogram of the present utility model;

[0026] Figure 5 This is a three-dimensional diagram of the connecting belt of the utility model;

[0027] Figure 6 A three-dimensional diagram of the fixing belt of the present invention;

[0028] Figure 7 It is a front view of the utility model;

[0029] Figure 8 This is a schematic diagram of the present invention when in use;

[0030] Figure 9 This is one of the exploded views of the connector of the utility model;

[0031] Figure 10 This is the second exploded view of the connector of the utility model;

[0032] Figure 11 A schematic diagram used in this utility model;

[0033] In the figure: 1. Connecting elbow; 2. First connecting head; 3. Second connecting head; 4. Hard silicone tube; 5. Soft silicone tube; 6. Side panel; 7. Connecting belt; 8. Bevel teeth; 9. Fixing belt; 10. Adhesive layer; 11. Release film; 12. Connecting frame; 13. Slot; 14. Limiting teeth; 15. Conical head; 16. Card slot; 17. Connecting groove; 18. Card plate; 19. Sealing ring. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See also Figures 1-11 As shown, the utility model provides the following technical solutions:

[0036] A ureteral stent external drainage device includes a hard drainage part and a soft drainage part. The liquid inlet end of the hard drainage part is connected to the liquid outlet end of the soft drainage part, and the soft drainage part and the hard drainage part are punctured into the patient's body along a preset puncture path. The liquid inlet end of the soft drainage part extends to the inside of the patient's renal pelvis and ureter, and a channel for transporting liquid along the preset path is formed between the soft drainage part and the hard drainage part.

[0037] Through the above technical solution, this device is commonly used in ureteropelvic junction obstruction surgery (open or laparoscopic surgery). After resection of the stricture, the posterior wall of the renal pelvis and ureter are anastomosed. If it is difficult to insert a double-J tube during surgery, considering the distal ureteral stenosis, the flexible tube portion of the device is inserted into the ureter in an antegrade manner, passed through the renal pelvis and out of the body, and the rigid tube portion is fixed to the body surface and connected to a drainage bag. The anterior wall of the renal pelvis and ureter is then anastomosed to complete the surgery.

[0038] In addition, in the present invention, regarding the above-mentioned hard drainage part, such as Figure 1-Figure 7 As shown, the hard drainage part includes a hard silicone tube 4, the soft drainage part includes a soft silicone tube 5, and the infusion channel is formed between the hard silicone tube 4 and the soft silicone tube 5.

[0039] In this embodiment, after medical personnel insert the device into a patient, part of the rigid silicone tube 4 is located within the patient's body, while the soft silicone tube 5 is completely located within the patient's body. The fluid-inlet end of the soft silicone tube 5 is located within the renal pelvis and ureter. The soft silicone tube 5 supports the surgically anastomosed ureteropelvic junction, acting as a ureteral stent. Fluid accumulated in the ureter and renal pelvis is guided through the soft silicone tube 5 and its side holes, transporting the accumulated fluid into the rigid silicone tube 4. The accumulated fluid is then discharged through the rigid silicone tube 4 into a drainage bag, thereby completing the guidance of the accumulated fluid.

[0040] Moreover, in the present invention, after the hard silicone tube 4 and the soft silicone tube 5 are inserted, in order to facilitate the fixation of the hard silicone tube 4, a fixing piece for fixing itself is provided on the hard silicone tube 4, and the fixing piece is outside the patient's body. By pulling the fixing piece, the hard silicone tube 4 is fixed by the fixing piece, thereby fixing the position of the soft silicone tube 5 to prevent the hard silicone tube 4 from loosening.

[0041] When the soft silicone tube 5 is inserted, in order to make it easier to know the insertion depth of the soft silicone tube 5, a length mark 20 is set on the surface of the soft silicone tube 5. After the device completes the puncture and is fixed, the length mark 20 set on the surface of the soft silicone tube 5 is used to record the scale value of the skin outlet after the operation, and monitor the change of the value in real time. If the skin outlet value changes a lot, it means that the tube is out of place or the front drainage end is out of place, which is convenient for timely disposal.

[0042] Specifically, in one embodiment, regarding the above-mentioned fixing member, as Figure 1-Figure 7 、 Figure 11 As shown, the fixing member includes two side plates 6 and two adhesive parts. The two side plates 6 are symmetrically fixedly connected to the two sides of the hard silicone tube 4, and two connecting belts 7 are symmetrically fixedly connected to the opposite sides of the two side plates 6. One side of the two connecting belts 7 is convex to form a plurality of oblique teeth 8.

[0043] A slot 13 for inserting the connecting belt 7 is provided on the bonding portion, and a limiting tooth 14 matching the slot 13 is fixedly connected to the inner wall of the slot 13 .

[0044] In this embodiment, when the soft silicone tube 5 and the hard silicone tube 4 are retained in the patient's body, the two adhesive portions are bonded to the desired locations by the medical staff. After the adhesive portions are secured, the connecting straps 7 are pulled separately, allowing the free ends of the connecting straps 7 to pass through the slots 13 on the adhesive portions. The limiting teeth 14 engage with the beveled teeth 8, thereby securing the connecting straps 7. The connecting straps 7 secure the hard silicone tube 4, thereby securing the device to the patient's body. When the medical staff needs to remove the device, they simply cut the connecting straps 7 to remove the device, avoiding tearing the skin near the patient's wound.

[0045] In addition, in the present invention, how to use the bonding part, such as Figures 1-4 and Figure 6 As shown, the bonding part includes a fixing belt 9, one side of the fixing belt 9 is symmetrically fixedly connected to two connecting frames 12, the other side is bonded with an adhesive layer 10, the side of the adhesive layer 10 away from the fixing belt 9 is bonded with a release film 11, and a slot 13 is opened on the connecting frame 12.

[0046] In this embodiment, when the fixing belt 9 needs to be fixed, the release film 11 is torn off to expose the adhesive layer 10, and the two fixing belts 9 are placed at the positions required by the medical staff respectively. The fixing belts 9 are bonded to the patient's skin through the adhesive layer 10 to fix the fixing belts 9. After the fixing belts 9 are fixed, the connecting belts 7 are pulled respectively so that the free ends of the connecting belts 7 pass through the slots 13 on the connecting frame 12, and the limiting teeth 14 cooperate with the bevel teeth 8 to fix the connecting belt 7.

[0047] When the connecting belt 7 needs to be inserted into the slot 13, in order to facilitate the insertion of the connecting belt 7, as shown in FIG. Figure 1-Figure 5 As shown, the free end of the connecting strip 7 is convex to form a conical head 15 .

[0048] In order to make the device easy to connect with drainage bags and negative pressure equipment, such as Figures 1-4 and Figure 7 As shown, a connector is provided at one end of the hard silicone tube 4 away from the soft silicone tube 5, and the connector includes a first connecting part and a second connecting part that are detachably connected. The first connecting part is fixedly connected to the hard silicone tube 4, and a connecting bend 1 for connecting a drainage bag is provided on the side of the second connecting part away from the first connecting part.

[0049] In this embodiment, after the hard silicone tube 4 and the soft silicone tube 5 are fixed on the patient's body, the first connecting part and the second connecting part are connected, so that the hard silicone tube 4 is connected to the connecting elbow 1, and then the connecting elbow 1 is connected to the drainage bag. When the accumulated fluid is guided to flow through the hard silicone tube 4 and the soft silicone tube 5, and the accumulated fluid is guided to flow into the drainage bag through the connecting elbow 1.

[0050] Specifically, in one embodiment, regarding the first connecting portion and the second connecting portion, as Figures 1-4 、 Figure 9-10 As shown, the first connecting part includes a first connecting head 2, and the second connecting part includes a second connecting head 3. The second connecting head 3 is recessed toward one side of the first connecting head 2 to form a connecting groove 17. The inner wall of the connecting groove 17 is symmetrically fixedly connected with two clamping plates 18.

[0051] Two clamping grooves 16 matching with the clamping plate 18 are symmetrically formed on one side of the first connector 2 facing the connecting groove 17 .

[0052] In this embodiment, when it is necessary to connect the first connecting part and the second connecting part, the first connecting head 2 is inserted into the connecting groove 17 inside the second connecting head 3, and the first connecting head 2 is rotated so that the card slot 16 and the card plate 18 are engaged, thereby connecting the first connecting part and the second connecting part, and then connecting the connecting elbow 1 to the hard silicone tube 4.

[0053] When the first connector 2 and the second connector 3 are connected, in order to increase the airtightness of the connection, as shown in FIG. Figure 9-10 As shown, a sealing ring 19 is provided on the circumference of the first connecting head 2 .

[0054] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ureteral stent external drainage device, characterized by: It includes a hard drainage part and a soft drainage part. The liquid inlet end of the hard drainage part is connected to the liquid outlet end of the soft drainage part, and the soft drainage part and the hard drainage part are punctured into the patient's body along a preset puncture path. The liquid inlet end of the soft drainage part extends to the patient's renal pelvis ureter connection to the inside of the ureter, and a channel for transporting liquid along the preset path is formed between the soft drainage part and the hard drainage part, and both are provided with drainage holes.

2. The ureteral stent external drainage device according to claim 1, characterized in that: The hard drainage part includes a hard silicone tube (4), the soft drainage part includes a soft silicone tube (5), and the infusion channel is formed between the inside of the hard silicone tube (4) and the soft silicone tube (5).

3. The ureteral stent external drainage device according to claim 2, characterized in that: The hard silicone tube (4) is provided with a fixing piece for fixing the hard silicone tube (4), and the fixing piece is located outside the patient's body.

4. The ureteral stent external drainage device according to claim 2, characterized in that: The surface of the soft silicone tube (5) is provided with a length mark (20).

5. The ureteral stent external drainage device according to claim 3, characterized in that: The fixing member comprises two side plates (6) and two bonding parts, the two side plates (6) are symmetrically fixedly connected to the two sides of the hard silicone tube (4), and the two side plates (6) are symmetrically fixedly connected to the opposite sides of the two connecting belts (7), and one side of the two connecting belts (7) is convex to form a plurality of oblique teeth (8); The bonding portion is provided with a slot (13) for inserting the connecting belt (7), and the inner wall of the slot (13) is fixedly connected with a limiting tooth (14) matching the slot (13).

6. The ureteral stent external drainage device according to claim 5, characterized in that: The bonding part comprises a fixing belt (9), one side of the fixing belt (9) is symmetrically fixedly connected to two connecting frames (12), the other side is bonded with an adhesive layer (10), the side of the adhesive layer (10) away from the fixing belt (9) is bonded with a release film (11), and the slot (13) is opened on the connecting frame (12).

7. The ureteral stent external drainage device according to claim 5, characterized in that: The free end of the connecting belt (7) is convex to form a conical head (15).

8. The ureteral stent external drainage device according to claim 2, characterized in that: The hard silicone tube (4) is provided with a connector at one end away from the soft silicone tube (5), and the connector includes a first connecting part and a second connecting part that are detachably connected. The first connecting part is fixedly connected to the hard silicone tube (4), and the second connecting part is provided with a connecting elbow (1) for connecting to a drainage bag on a side away from the first connecting part.

9. The ureteral stent external drainage device according to claim 8, characterized in that: The first connecting part comprises a first connecting head (2), the second connecting part comprises a second connecting head (3), the second connecting head (3) is recessed on one side toward the first connecting head (2) to form a connecting groove (17), and two clamping plates (18) are symmetrically fixedly connected to the inner wall of the connecting groove (17); Two card slots (16) matching the card plate (18) are symmetrically formed on one side of the first connector (2) facing the connection slot (17).

10. The ureteral stent external drainage device according to claim 9, characterized in that: A sealing ring (19) is sleeved on the circumference of the first connector (2).

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