Ureteroscope with cold resection device

Abstract

The utility model provides a ureteroscope with a cold resection device, belongs to the technical field of ureters, and aims to solve the problem that in the prior art, a flexible ureteroscope generally only has an observation function and does not have a focus cutting function. Comprising an operation handle, a ureter, a pushing device and a traction device, the ureter is communicated with the operation handle, the ureter comprises a soft lens end located at the end of the ureter, a mounting groove is formed in the soft lens end, a sliding block is slidably embedded in the mounting groove, and a cold cutter is hinged to the end of the sliding block; the pushing device is arranged on the operating handle and used for pushing the sliding block to move in the mounting groove in the axial direction of the ureter; the traction device is arranged on the operation handle and used for driving the cold cutter to rotate. According to the utility model, after the ureter extends into a proper position, the pushing device and the pushing sliding block on the operating handle can be pushed forwards, so that the cold cutter extends out of the mounting groove; afterwards, the cold cutter is pulled through the traction device, the blade swings downwards for cutting, and cutting of the focus is completed.

Description

Technical Field

[0001] This utility model belongs to the field of ureteral technology, specifically relating to a ureteroscope with a cold ablation device. Background Technology

[0002] A flexible ureteroscope is a thin, long, and flexible endoscope that can generally pass through the natural cavities of the urethra, bladder, and fallopian tubes to facilitate observation of the kidneys and understand the condition of any lesions within them.

[0003] Compared to traditional thermal incision techniques, cold knife incision has the following advantages: 1. Compared to traditional open surgery, cold knife incision is performed through a smaller incision, reducing damage to surrounding tissues and postoperative pain, resulting in faster patient recovery; 2. Cold knife incision uses precise endoscopic instruments to accurately locate the stenosis, reducing damage to healthy ureteral tissue; 3. Because it does not use electrothermal energy, cold knife incision reduces the risk of thermal damage and bleeding during the procedure; 4. It is suitable for ureteral strictures caused by various reasons, including postoperative strictures, post-inflammatory strictures, or strictures caused by stones; 5. Cold knife incision can be combined with other treatment methods such as balloon dilation, laser therapy, or stent placement to improve the success rate of treatment; 6. According to relevant literature, the incidence of ureteral stricture after flexible endoscopic surgery is low, approximately 1.4%; 7. Due to its minimal trauma, patients can resume daily activities more quickly after surgery; it effectively relieves ureteral stricture, improves renal function, and enhances the patient's quality of life.

[0004] Currently, flexible ureteroscopes generally only have observation functions and do not have lesion cutting functions. Therefore, it is necessary to propose a ureteroscope with a cold ablation device so that the ureter can have both observation and lesion cutting functions. Utility Model Content

[0005] In view of this, the present invention provides a ureteroscope with a cold resection device to solve the problem that in the prior art, flexible ureteroscopes generally only have observation functions and do not have lesion cutting functions.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A ureteroscope with a cold ablation device includes:

[0008] operating handle;

[0009] The ureter is connected to an operating handle and includes a flexible lens end at its end. The flexible lens end is provided with a mounting groove, in which a slider is slidably embedded. A cold cutting blade is hinged to the end of the slider.

[0010] A pushing device, which is mounted on an operating handle, is used to push a slider to move along the axial direction of the ureter within the mounting groove;

[0011] A pulling device, which is mounted on the operating handle, is used to drive the cold cutting blade to rotate.

[0012] In this technical solution, it should be noted that the operating handle is a hollow tubular structure with an eyepiece. The ureter is used to insert into the patient's body, with a working length of 600mm-800mm and a diameter of 3.1mm-4.5mm. In this solution, after the ureter is inserted to the appropriate position, the pushing device on the operating handle can be used to push the slider forward, causing the cold cutting blade to extend out of the mounting groove. Then, the cold cutting blade is pulled by the traction device, causing the blade to cut downwards to complete the cutting of the lesion. This allows the flexible ureteroscope of this utility model to have both observation and lesion cutting functions.

[0013] Preferably, the pushing device includes an operation key and a slide groove on the operation handle. The slide groove is arranged along the axial direction of the operation handle. The operation key is slidably embedded in the slide groove. One end of the operation key is fixedly connected to a first guide wire. The end of the first guide wire away from the operation key passes through the side wall of the ureter and is connected to the slider.

[0014] In this technical solution, it should be noted that the pushing device specifically includes an operation key and a slide. In addition, the guide wire is a medical device, which mainly plays a guiding and supporting role, similar to a wire. In this solution, when it is necessary to push the cold cutting blade out of the mounting groove, the operation key is slid down. The operation key drives the first guide wire to move. After the first guide wire moves, it pushes the slider and the cold cutting blade connected to it to move out of the mounting groove.

[0015] Preferably, magnets are provided at both ends of the slide, and iron blocks that magnetically cooperate with the two magnets are provided at both ends of the operation key.

[0016] In this technical solution, it should be noted that the magnets and magnetic blocks mainly serve to fix the operating key. When the ureteroscope is not in use, the cold cutting blade is located in the mounting groove, and the operating key is located at the top of the slide. The operating key is fixed by the iron block at its top and the magnet at the top of the slide. When the cold cutting blade needs to be operated, the cold cutting blade is located outside the mounting groove, and the operating key is located at the bottom of the slide. The operating key is fixed by the iron block at its bottom and the magnet at the bottom of the slide.

[0017] Preferably, the end of the operation key away from the bottom of the groove is provided with a plurality of anti-slip ridges, and the plurality of anti-slip ridges are spaced apart along the height direction of the operation key.

[0018] In this technical solution, it should be noted that the anti-slip ridges are set horizontally and can be made of rubber material. The anti-slip ridges are set to increase the friction between the operation keys and the operator's hand and prevent slippage.

[0019] Preferably, the traction device includes a second guide wire, one end of which is connected to the side wall of the cold cutter, and the other end passes through the side wall of the ureter and exits from the operating handle.

[0020] In this technical solution, it should be noted that the guide wire is a medical device that mainly serves as a guide and support, similar to a wire. When the lesion needs to be cut with a cold cutting blade, the cold cutting blade is first pushed out of the mounting groove. Then, the operation key is slid down, which moves the first guide wire. After the first guide wire moves, it pushes the slider and the cold cutting blade connected to it out of the mounting groove. Then, by pulling the pull ring, the guide wire can be retracted, thereby pulling the body of the cold cutting blade downward, causing the cold cutting blade to swing downward.

[0021] Preferably, the cold cutting blade is provided with a return spring connected to the slider.

[0022] In this technical solution, it should be noted that the reset spring is used to assist the cold cutting blade in resetting (not shown in the figure).

[0023] Preferably, the end of the second guide wire away from the cold cutting blade is provided with a pull ring.

[0024] In this technical solution, it should be noted that the pull ring facilitates the operator to pull the second guide wire.

[0025] Preferably, the side wall of the operating handle is provided with a hook that engages with the pull ring.

[0026] It should be noted that when the ureteroscope is not in use, the pull ring can be hung on the hook to facilitate the storage of the second guidewire.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0028] 1. In this utility model, after the ureter is inserted into the appropriate position, the pushing device on the operating handle can push the slider forward, so that the cold cutting blade extends out of the mounting groove; then, the cold cutting blade is pulled by the pulling device, so that the blade swings downward to cut the lesion, thus making the flexible ureteroscope of this utility model have both observation function and lesion cutting function.

[0029] 2. In this utility model, the magnets and magnetic blocks mainly serve to fix the operating key. When the ureteroscope is not in use, the cold cutting blade is located in the mounting groove, and the operating key is located at the top of the slide. The operating key is fixed by the iron block at its top and the magnet at the top of the slide. When the cold cutting blade needs to be operated, the cold cutting blade is located outside the mounting groove, and the operating key is located at the bottom of the slide. The operating key is fixed by the iron block at its bottom and the magnet at the bottom of the slide.

[0030] 3. In this utility model, when it is necessary to cut the lesion with a cold cutting blade, firstly, when the cold cutting blade is pushed out of the mounting groove, the operation key is slid down. The operation key drives the first guide wire to move. After the first guide wire moves, it pushes the slider and the cold cutting blade connected to it to move out of the mounting groove. Then, by pulling the pull ring, the guide wire can be retracted, thereby pulling the cold cutting blade body downward, so that the cold cutting blade can swing downward.

[0031] 4. In this invention, when the ureteroscope is not in use, the pull ring can be hung on the hook for easy storage of the second guidewire. Attached Figure Description

[0032] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0033] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0034] Figure 2 This is a three-dimensional structural diagram of the operating handle and the flexible lens end of this utility model;

[0035] Figure 3 This is a partial three-dimensional structural diagram of the operating handle of this utility model;

[0036] Figure 4 This is a cross-sectional structural diagram of the soft lens end of this utility model;

[0037] Figure 5 for Figure 4 A schematic diagram of the structure after the intercooler cutting blade extends out of the mounting slot;

[0038] Among them: 1-operating handle, 2-ureter, 3-flexible lens end, 4-slide groove, 5-first guidewire, 6-operating key, 7-second guidewire, 8-pull ring, 9-hook, 10-magnet, 11-iron block, 12-mounting groove, 13-slider, 14-cold cutting blade, 15-anti-slip ridge. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0041] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0045] Example 1

[0046] like Figures 1-4 As shown, this utility model discloses a ureteroscope with a cold ablation device, comprising:

[0047] operating handle 1;

[0048] Ureteral 2, which is connected to operating handle 1, and includes a flexible lens end 3 at its end, the flexible lens end 3 is provided with a mounting groove 12, a slider 13 is slidably embedded in the mounting groove 12, and a cold cutting blade 14 is hinged to the end of the slider 13.

[0049] A pushing device is provided on the operating handle 1 to push the slider 13 to move along the axial direction of the ureter 2 in the mounting groove 12;

[0050] A pulling device is provided on the operating handle 1 to drive the cold cutting blade 14 to rotate.

[0051] It should be noted that the operating handle 1 is a hollow tubular structure with an eyepiece on it. The ureter 2 is used to insert into the patient's body, with a working length of 600mm-800mm and a diameter of 3.1mm-4.5mm. In this design, after the ureter 2 is inserted to the appropriate position, the pushing device on the operating handle 1 can push the slider 13 forward, causing the cold cutting blade 14 to extend out of the mounting groove 12. Then, the cold cutting blade 14 is pulled by the pulling device to make the blade cut downwards, thus completing the cutting of the lesion. This allows the flexible ureteroscope 2 of this invention to have both observation and lesion cutting functions.

[0052] Example 2

[0053] like Figure 2 , Figure 3 and Figure 4 As shown, this embodiment is largely the same as the above embodiment, except that the pushing device includes an operation key 6 and a slide groove 4 on the operation handle 1. The slide groove 4 is arranged along the axial direction of the operation handle 1. The operation key 6 is slidably embedded in the slide groove 4. One end of the operation key 6 is fixedly connected to a first guide wire 5. The end of the first guide wire 5 away from the operation key 6 passes through the side wall of the ureter 2 and is connected to the slider 13. It should be noted that the pushing device specifically includes an operation key 6 and a slide groove 4. In addition, the guide wire is a medical device, mainly playing a guiding and supporting role, similar to a wire. In this solution, when it is necessary to push the cold cutting blade 14 out of the mounting groove 12, the operation key 6 is slid down. The operation key 6 drives the first guide wire 5 to move. After the first guide wire 5 moves, it pushes the slider 13 and the cold cutting blade 14 connected to it to move out of the mounting groove 12.

[0054] like Figure 3 As shown, in this embodiment, magnets 10 are provided at both ends of the slide groove 4, and iron blocks 11 that magnetically cooperate with the two magnets 10 are provided at both ends of the operation key 6. It should be noted that the magnets 10 and the iron blocks mainly serve to fix the operation key 6. When the ureteroscope is not in use, the cold cutter 14 is located in the mounting groove 12, and the operation key 6 is located at the top of the slide groove 4. The operation key 6 is fixed by the iron blocks 11 at its top and the magnets 10 at the top of the slide groove 4. When the cold cutter 14 needs to be operated, the cold cutter 14 is located outside the mounting groove 12, and the operation key 6 is located at the bottom of the slide groove 4. The operation key 6 is fixed by the iron blocks 11 at its bottom and the magnets 10 at the bottom of the slide groove 4.

[0055] like Figure 3As shown, in this embodiment, the end of the operation key 6 away from the bottom of the groove 4 is provided with a plurality of anti-slip ridges 15, which are spaced apart along the height direction of the operation key 6. It should be noted that the anti-slip ridges 15 are arranged laterally and can be made of rubber material. The anti-slip ridges 15 are provided to increase the friction between the operation key 6 and the operator's hand and prevent slippage.

[0056] Example 3

[0057] like Figure 2 and Figure 4 and Figure 5 As shown, this embodiment is largely the same as the above embodiment, except that the traction device includes a second guide wire 7. One end of the second guide wire 7 is connected to the side wall of the cold cutting blade 14, and the other end passes through the side wall of the ureter 2 and exits from the operating handle 1. It should be noted that the guide wire is a medical device, mainly serving a guiding and supporting function, similar to a wire. When it is necessary to cut the lesion with the cold cutting blade 14, the cold cutting blade 14 is first pushed out of the mounting groove 12, and then the operating key 6 is slid down. The operating key 6 drives the first guide wire 5 to move. After the first guide wire 5 moves, it pushes the slider 13 connected to it and the cold cutting blade 14 to move out of the mounting groove 12. Then, by pulling the pull ring 8, the second guide wire 7 can be retracted, thereby pulling the body of the cold cutting blade 14 downward, causing the cold cutting blade 14 to swing downward.

[0058] In this embodiment, the cold cutting blade 14 is provided with a return spring connected to the slider 13. It should be noted that the return spring is provided to assist the cold cutting blade 14 in resetting (not shown in the figure).

[0059] like Figure 3 As shown, in this embodiment, a pull ring 8 is provided at the end of the second guide wire 7 away from the cold cutting blade 14. It should be noted that the pull ring 8 facilitates the operator to pull the second guide wire 7.

[0060] like Figure 3 As shown, in this embodiment, the side wall of the operating handle 1 is provided with a hook 9 that cooperates with the pull ring 8. It should be noted that when this ureteroscope 2 is not in use, the pull ring 8 can be hung on the hook 9 for easy storage of the second guidewire 7.

[0061] The working principle of this utility model is as follows:

[0062] When it is necessary to cut the lesion with the cold cutting blade 14, first push the cold cutting blade 14 out of the mounting groove 12, slide the operation key 6 downward, the operation key 6 drives the first guide wire 5 to move, after the first guide wire 5 moves, push the slider 13 connected to it and the cold cutting blade 14 to move out of the mounting groove 12, and then by pulling the pull ring 8, the second guide wire 7 can be retracted, thereby pulling the body of the cold cutting blade 14 downward, so that the cold cutting blade 14 can cut the lesion downward.

[0063] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0064] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0065] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ureteroscope with a cold ablation device, characterized in that, include: Operating handle (1); Ureteral (2), the ureter (2) is connected to the operating handle (1), and the ureter (2) includes a flexible lens end (3) located at its end, the flexible lens end (3) is provided with a mounting groove (12), a slider (13) is slidably embedded in the mounting groove (12), and a cold cutting blade (14) is hinged to the end of the slider (13). A pushing device is provided on the operating handle (1) for pushing the slider (13) to move along the axial direction of the ureter (2) in the mounting groove (12); A pulling device is provided on the operating handle (1) to drive the cold cutting blade (14) to rotate.

2. A ureteroscope with a cold ablation device according to claim 1, characterized in that, The pushing device includes an operation key (6) and a slide groove (4) on the operation handle (1). The slide groove (4) is arranged along the axial direction of the operation handle (1). The operation key (6) is slidably embedded in the slide groove (4). One end of the operation key (6) is fixedly connected to a first guide wire (5). The end of the first guide wire (5) away from the operation key (6) passes through the side wall of the ureter (2) and is connected to the slider (13).

3. A ureteroscope with a cold ablation device according to claim 2, characterized in that, The two ends of the slide (4) are respectively provided with magnets (10), and the two ends of the operation key (6) are respectively provided with iron blocks (11) that magnetically cooperate with the two magnets (10).

4. A ureteroscope with a cold ablation device according to claim 2, characterized in that, The operation key (6) is provided with a number of anti-slip ridges (15) at one end away from the bottom of the groove (4), and the number of anti-slip ridges (15) are spaced apart along the height direction of the operation key (6).

5. A ureteroscope with a cold ablation device according to claim 1, characterized in that, The traction device includes a second guide wire (7), one end of which is connected to the side wall of the cold cutter (14), and the other end passes through the side wall of the ureter (2) and exits from the operating handle (1).

6. A ureteroscope with a cold ablation device according to claim 5, characterized in that, The cold cutting blade (14) is provided with a return spring connected to the slider (13).

7. A ureteroscope with a cold ablation device according to claim 5, characterized in that, The second guide wire (7) has a pull ring (8) at the end away from the cold cutting blade (14).

8. A ureteroscope with a cold ablation device according to claim 6, characterized in that, The side wall of the operating handle (1) is provided with a hook (9) that cooperates with the pull ring (8).

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