Ureteral stent tube with angle-adjustable head end

Abstract

The utility model provides a ureteral stent tube with an angle-adjustable head end. The ureteral stent tube comprises a first bent tube and a second bent tube which are respectively arranged at two ends of a connecting tube, the first bent pipe and the second bent pipe are both elastic annular pipes; the outer wall of the first bent pipe and / or the second bent pipe is provided with a wire groove structure allowing the supporting metal wire to be contained, and the trend of the wire groove structure is the same as the trend of the first bent pipe and / or the second bent pipe where the wire groove structure is located. The supporting metal wire is contained through the wire groove structure, when the double-J tube is placed, the head end of the first bent tube or the second bent tube is straightened by means of the hardness of the supporting metal wire so that the double-J tube can be placed in the ureter incision conveniently, and after the head end of the double-J tube is placed at the proper position of the pelvis, the supporting metal wire is taken out from the ureter incision under the cooperation of the separating forceps. The first bent tube or the second bent tube can be re-curled into an O shape in the pelvis, so that the purposes of fixation and displacement prevention are achieved, and the convenience of placement operation of the double-J tube is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a ureteral stent tube with an adjustable tip angle. Background Technology

[0002] Double-J stents are widely used in urology. Placing a double-J stent in the ureter effectively provides support, drainage, and relief of obstruction. There are two methods for placing a double-J stent: one involves first placing a guidewire in the ureter and then pushing the double-J stent in along the guidewire. In this method, the guidewire passing through the double-J stent transforms it into a straight line, facilitating insertion.

[0003] In open or laparoscopic surgeries such as ureterolithotomy, ureteroplasty, or ureteroscopic anastomosis, it is impossible to pre-place the guidewire entirely within the ureter, thus hindering the insertion of the double-J stent along the guidewire. The current clinical method involves inserting the guidewire from the ureteral incision towards the bladder end, and then inserting the tail end of the double-J stent into the bladder along the guidewire. After removing the guidewire, the tip of the double-J stent is repeatedly adjusted and straightened using dissecting forceps to place it into the renal pelvis through the ureteral incision.

[0004] During this process, due to the lack of guidewire support, the tip of the double-J catheter will naturally curl into an "O" shape, which greatly complicates the placement process. Especially in laparoscopic surgery, in addition to prolonging the operation time and consuming the doctor's energy and physical strength, the inability to guarantee the placement effect of the double-J catheter tip increases the risk of surgical complications. Utility Model Content

[0005] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a ureteral stent tube with an adjustable tip angle.

[0006] According to the present invention, a ureteral stent tube with an adjustable tip angle is provided, comprising a connecting tube, a first curved tube, and a second curved tube, wherein the first curved tube and the second curved tube are respectively disposed at both ends of the connecting tube.

[0007] Both the first and second bent tubes are elastic annular tubes;

[0008] The outer wall of the first and / or second curved tube is provided with a groove structure that allows for the accommodation of supporting metal wires, and the orientation of the groove structure is the same as that of the first and / or second curved tube.

[0009] Preferably, the trough structure includes at least two opposing anchor points, each of which is provided with a receiving groove that allows the end of the supporting metal wire to be inserted.

[0010] Furthermore, when both ends of the supporting metal wire are inserted into two opposite anchor points, the supporting metal wire can remain taut.

[0011] Preferably, each of the anchor points protrudes from the outer wall of the first curved pipe and / or the second curved pipe in which it is located.

[0012] Preferably, a guide point is also provided between the two opposite anchor points, and multiple guide points are provided at intervals along the direction of the first curved pipe and / or the second curved pipe where the two opposite anchor points are located.

[0013] Furthermore, each of the aforementioned guide points includes a semi-open through groove, and the semi-open through groove of each of the aforementioned guide points allows the supporting metal wire to be inserted from the outside to the inside or removed from the inside to the outside.

[0014] Preferably, each of the guide points protrudes from the outer surface of the first curved tube and / or the second curved tube where the two opposing anchor points are located.

[0015] Preferably, a guide groove is provided between the two opposing anchor points, extending along the direction of the first curved tube and / or the second curved tube where the two opposing anchor points are located, and the opening of the guide groove allows the support wire to be inserted or removed.

[0016] Preferably, the guide groove has a protruding or recessed structure on the first and / or second curved tubes where the two opposite anchor points are located.

[0017] Preferably, any of the anchor points is located within the wall of the first bend and / or the second bend.

[0018] Preferably, the supporting metal wire includes steel wire, copper wire, or silver wire.

[0019] Preferably, the connecting tube is provided with at least two guide wire holes.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. This utility model uses a grooved structure to accommodate the supporting metal wire. When placing a double-J tube, the supporting metal wire can be placed in the grooved structure of the tube wall. With the help of the rigidity of the supporting metal wire, the tip of the first or second curved tube is straightened. The double-J tube with the straightened tip can be easily inserted through the ureteral incision. After the tip of the double-J tube is placed in the appropriate position in the renal pelvis, the supporting metal wire is removed from the ureteral incision with the help of the dissecting forceps. The first or second curved tube will then be re-curled into an "O" shape in the renal pelvis to achieve the purpose of fixation and preventing displacement, which helps to improve the convenience of double-J tube placement. Attached Figure Description

[0022] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0023] Figure 1 This utility model mainly illustrates the conventional state of the ureteral stent tube;

[0024] Figure 2 This utility model mainly embodies a wire groove structure.

[0025] Figure 3 This is a schematic diagram illustrating another type of wire groove structure.

[0026] Figure label:

[0027] Connecting pipe 1 Anchor positioning point 41

[0028] First curved tube 2, guide point 42

[0029] Second curved tube 3 guide groove 43

[0030] 4. Cable trough structure; 5. Supporting metal wire. Detailed Implementation

[0031] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0032] like Figure 1 , Figure 2 as well as Figure 3 As shown, a ureteral stent tube with an adjustable tip angle according to this utility model includes a connecting tube 1, a first curved tube 2, and a second curved tube 3, with the first curved tube 2 and the second curved tube 3 respectively disposed at both ends of the connecting tube 1. Both the first curved tube 2 and the second curved tube 3 are elastic annular tubes. The outer wall of the first curved tube 2 and / or the second curved tube 3 is provided with a groove structure 4 that allows for the accommodation of a supporting metal wire 5, and the orientation of the groove structure 4 is the same as that of the first curved tube 2 and / or the second curved tube 3.

[0033] It should be noted that, in use, this application utilizes the groove structure 4 to accommodate the supporting metal wire 5. When placing the double-J tube, the supporting metal wire 5 can be placed in the groove structure 4 of the tube wall. The supporting metal wire 5 includes one of various rigid materials such as steel wire, copper wire, and silver wire, possessing a certain degree of rigidity, which can straighten the tip of the first curved tube 2 or the second curved tube 3. The double-J tube with its straightened tip can be easily inserted through the ureteral incision. After placing the tip of the double-J tube in the appropriate position in the renal pelvis, the supporting metal wire 5 is removed from the ureteral incision with the assistance of dissecting forceps. The first curved tube 2 and / or the second curved tube 3 will then re-curl into an "O" shape within the renal pelvis to achieve fixation and prevent displacement.

[0034] Specifically, the cable trough structure 4 includes at least two opposing anchor points 41, each anchor point 41 having a receiving groove that allows the end of the support wire 5 to be inserted. When both ends of the support wire 5 are inserted into the two opposing anchor points, the support wire 5 remains taut. The two opposing anchor points 41 enable the support wire 5 to be detachably installed onto the first curved tube 2 or the second curved tube 3, thereby straightening the end of the first curved tube 2 or the second curved tube 3.

[0035] In one feasible implementation: each anchor point 41 protrudes from the outer wall of the first curved tube 2 and / or the second curved tube 3 where it is located. This facilitates operation by the doctor using dissecting forceps. Furthermore, guide points 42 are provided between the two opposing anchor points 41, with multiple guide points 42 spaced apart along the direction of the first curved tube 2 and / or the second curved tube 3 where the two opposing anchor points 41 are located. Each guide point 42 includes a semi-open through groove, and the semi-open through groove of each guide point 42 allows the supporting wire 5 to be inserted from the outside to the inside or removed from the inside to the outside. Each guide point 42 protrudes from the outer surface of the first curved tube 2 and / or the second curved tube 3 where the two opposing anchor points 41 are located.

[0036] The protruding guide point 42 provides support and restraint to the middle of the support wire 5, preventing the support wire 5 from accidentally coming out of the groove structure 4, and helps to improve the stability of the connection between the support wire 5 and the first curved tube 2 or the second curved tube 3.

[0037] In a modified embodiment, the multiple guide points 42 are replaced with guide grooves 43, which serve the same purpose of preventing the support wire 5 from accidentally detaching from the groove structure 4. Specifically, a guide groove 43 is also provided between two opposing anchor points 41, extending along the direction of the first curved tube 2 and / or the second curved tube 3 where the two opposing anchor points 41 are located, and the opening of the guide groove 43 allows the support wire 5 to enter. The guide groove 43 has a protruding or recessed structure on the first curved tube 2 and / or the second curved tube 3 where the two opposing anchor points 41 are located.

[0038] In another feasible embodiment, each anchor point 41 is located within the wall of the first bend 2 and / or the second bend 3. Positioning the anchor point 41 within the wall of the first bend 2 and / or the second bend 3 helps improve the stability of the connection between the support wire 5 and the first bend 2 and / or the second bend 3. Furthermore, the built-in structure does not increase the overall size of the ureteral stent tube.

[0039] More specifically, the connecting tube 1 is provided with at least two guidewire holes, which are for facilitating the insertion of the guidewire into the ureteral stent tube. In one feasible embodiment, the ureteral stent tube is a soft tube.

[0040] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0041] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A head angle-adjustable ureteral stent, characterized by, The connecting pipe (1), the first curved pipe (2) and the second curved pipe (3), the first curved pipe (2) and the second curved pipe (3) are arranged at two ends of the connecting pipe (1) respectively; The first curved pipe (2) and the second curved pipe (3) are both elastic circular pipes; The outer wall of the first curved pipe (2) and / or the second curved pipe (3) is provided with a wire slot structure (4) allowing the support wire (5) to be accommodated, and the wire slot structure (4) has the same direction as the first curved pipe (2) and / or the second curved pipe (3).

2. The head angle adjustable ureteral stent according to claim 1, wherein, The wire slot structure (4) includes at least two opposite anchor points (41), and any anchor point (41) is provided with an accommodation slot allowing the end of the support wire (5) to be inserted. When the two ends of the support wire (5) are inserted into the two opposite anchor points respectively, the support wire (5) can be kept in a straight state.

3. The head angle adjustable ureteral stent according to claim 2, wherein, Any anchor point (41) protrudes from the outer wall of the first curved pipe (2) and / or the second curved pipe (3).

4. The head angle adjustable ureteral stent according to claim 3, wherein, The guide points (42) are also arranged between the two opposite anchor points (41), and the guide points (42) are spaced apart along the direction of the first curved pipe (2) and / or the second curved pipe (3) where the two opposite anchor points (41) are located. Any guide point (42) includes a semi-open through slot, and the semi-open through slot of any guide point (42) allows the support wire (5) to be inserted from outside to inside or taken out from inside to outside.

5. The head angle adjustable ureteral stent according to claim 4, wherein, Any guide point (42) protrudes from the outer surface of the first curved pipe (2) and / or the second curved pipe (3) where the two opposite anchor points (41) are located.

6. The head angle adjustable ureteral stent according to claim 3, wherein, The guide groove (43) is also arranged between the two opposite anchor points (41), extends along the direction of the first curved pipe (2) and / or the second curved pipe (3) where the two opposite anchor points (41) are located, and the opening of the guide groove (43) allows the support wire (5) to be inserted or taken out.

7. The head angle adjustable ureteral stent according to claim 6, wherein, The guide groove (43) is a protruding structure or a recessed structure on the first curved pipe (2) and / or the second curved pipe (3) where the two opposite anchor points (41) are located.

8. The head angle adjustable ureteral stent according to claim 2, wherein, Any anchor point (41) is located in the pipe wall of the first curved pipe (2) and / or the second curved pipe (3).

9. The head angle adjustable ureteral stent according to claim 1, wherein, The support wire (5) includes a steel wire, a copper wire or a silver wire.

10. The head angle adjustable ureteral stent according to claim 1, wherein, The connecting pipe (1) is provided with at least two wire guide holes.

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