Plugging device for flexible ureteroscope

Abstract

The utility model discloses a plugging device for a flexible ureteroscope, and belongs to the technical field of medical equipment. Comprising a guide wire, a catheter and a water conveying pipe, the guide wire is sleeved with the catheter, and the catheter comprises a sleeving section and an expansion section; the sleeving section comprises a guiding section and a connecting section, the expansion section is located between the guiding section and the connecting section, and the expansion section is an expansion water bag; the water conveying pipe is used for conveying liquid media, one end of the water conveying pipe is connected to the outer side of the connecting section in a sleeving mode, and the connecting section is located between the guide wire and the water conveying pipe. And the liquid medium enters or flows out of the expansion water bag through the water conveying pipe and the gap of the connecting section, so that the expansion water bag is expanded or shrunk. According to the scheme, the diameter of the guide wire can be set to be thinner, so that the diameter of the whole pipeline of the plugging device is smaller, and the plugging device used by the flexible ureteroscope can be used for flexible ureteroscope operations.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, and more specifically to an occluder used for a ureteroscope. Background Art

[0002] Ureteral and kidney stones are the most common and numerous diseases in urology. Conventional surgical procedures for treating stones currently include ureteroscopy, flexible ureteroscopy, and percutaneous nephrolithotomy.

[0003] Flexible ureteroscopy is the most commonly used procedure for treating kidney stones. During flexible ureteroscopy, a flexible sheath is inserted, and the ureteroscope is then manipulated within the sheath. However, the sheath has limitations, and the stones can only be crushed, not expelled.

[0004] Another method is to use a pipeline occluder, which is a safe and effective tool for treating ureteral stones. It can significantly reduce the drift of stones during ureteroscopic lithotripsy, improve the stone clearance rate, shorten the operation time, and drag the stone fragments out of the ureteral cavity to reduce the pain caused by postoperative stone removal. It has good clinical application value. At home and abroad, mechanical occluders are currently commonly used. They are inserted through the ureter and placed on the upper end of the stone. They are controlled by an external switch. When opened, the occluder will open, thereby blocking the stone. However, existing occluders are often used in ureteroscopic surgery. When used with a flexible ureteroscope, the diameter of the pipeline of the existing occluder is large, making it difficult to insert during surgery. Utility Model Content

[0005] The utility model provides an occluder used for a flexible ureteroscope, which can further reduce the pipe diameter of the occluder, so that the occluder can be used for the flexible ureteroscope.

[0006] In order to achieve the above-mentioned purpose, the technical solution provided by the present utility model is:

[0007] An occluder for a flexible ureteroscope, comprising:

[0008] Guidewire;

[0009] A catheter is sleeved on the guide wire, the catheter comprising a sleeve section and an expansion section; the sleeve section comprises a guide section and a connecting section, the expansion section is located between the guide section and the connecting section, and the expansion section is an expansion water balloon;

[0010] A water pipe is used to transport liquid medium, one end of which is sleeved and connected to the outside of the connecting section, so that the connecting section is located between the guide wire and the water pipe; the liquid medium enters or flows out of the expansion water bag through the gap between the water pipe and the connecting section, causing the expansion water bag to expand or contract.

[0011] Furthermore, the expansion water bag, the guide section and the connecting section are integrally formed to form the catheter.

[0012] Furthermore, the outer side of the expansion water balloon is coated with a hydrophilic coating.

[0013] Furthermore, one end of the water pipe is sealedly connected to the connecting section via a transition portion.

[0014] Furthermore, one end of the water delivery tube extends to abut against the expansion water bag.

[0015] Furthermore, the other end of the water pipe is connected to the water delivery device.

[0016] Furthermore, the guiding section and the guide wire are sealedly connected.

[0017] Furthermore, the water pipe is provided with a scale.

[0018] The technical solution provided by the present invention has the following beneficial effects compared with the existing technology: in this solution, the liquid medium enters or flows out of the expansion water bag through the gap between the water pipe and the connecting section to expand or contract the expansion water bag, which can make the diameter of the guide wire thinner, thereby making the overall pipeline diameter of the occluder smaller, so that the occluder used by the ureteroscope can be used for ureteroscope surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the structure of the occluder used for flexible ureteroscope;

[0020] Figure 2 for Figure 1 A magnified view of point A;

[0021] Figure 3 Schematic diagram of the plug structure with a scale set on the water pipe.

[0022] Description of labels:

[0023] 1. Guide wire; 2. Dilatation water bag; 21. Guide section; 22. Connecting section; 3. Adapter; 4. Water pipe; 5. Water delivery device; 6. Scale. DETAILED DESCRIPTION

[0024] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments.

[0025] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in this specification for understanding and reading by those familiar with this technology. They are not used to limit the conditions for implementation of the utility model and therefore have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in this utility model without affecting the efficacy and purpose of the utility model. At the same time, terms such as "upper", "lower", "left", "right", and "middle" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the utility model without substantially changing the technical content.

[0026] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0027] like Figure 1 As shown, this embodiment provides an occluder for use with a flexible ureteroscope, comprising a guide wire 1, a catheter, and a water tube 4.

[0028] The catheter is sleeved on the guide wire 1, and the catheter includes a sleeve section and an expansion section; the sleeve section includes a guide section 21 and a connecting section 22, the expansion section is located between the guide section 21 and the connecting section 22, and the expansion section is an expansion water bag 2. The water pipe 4 is used to transport a liquid medium, preferably, the liquid medium is physiological saline. One end of the water pipe 4 is sleeved and connected to the outside of the connecting section 22, so that the connecting section 22 is located between the guide wire 1 and the water pipe 4, and after the connecting section 22 is set between the guide wire 1 and the water pipe 4, there is a gap at the connecting section 22, which can be understood as the connection between the guide wire 1 and the water pipe 4 is not sealed through the connecting section 22 of the catheter. The liquid medium enters the expansion water bag 2 through the gap between the water pipe 4 and the connecting section 22 to expand the expansion water bag 2, and can also flow out through the gap of the connecting section 22 and the water pipe 4 to shrink the expansion water bag 2.

[0029] Regarding the guide section 21 and the connecting section 22, Figure 1 The middle view is illustrated in that the guide section 21 is located at the left end of the guide wire 1, which is the front end of the guide wire 1 during surgery; the connecting section 22 is located at the right end of the guide wire 1, which is the tail end of the guide wire 1 during surgery.

[0030] The guidewire 1 is 50 cm long and has a diameter of less than 3 mm. The expansion balloon 2, after expansion, is elliptical in shape, 30-40 mm long, and has a maximum diameter of 5-6 mm. Preferably, the guidewire 1 has a diameter of 3 mm, the expansion balloon 2 has a length of 35 mm, and has a maximum diameter of 5 mm.

[0031] As a preferred embodiment, the expansion bladder 2, the guide section 21, and the connecting section 22 are integrally formed to form a catheter. The catheter can be made of an elastic material such as silicone, with a thinner wall thickness at the expansion bladder 2 to allow the expansion of the expansion bladder 2. The expansion bladder 2 is also coated with a hydrophilic coating.

[0032] Combine Figure 2 As shown, one end of the water pipe 4 is sleeved and connected to the outside of the connecting section 22. In one embodiment, one end of the water pipe 4 is connected to the connecting section 22 via a transition portion 3. After the water pipe 4 is sleeved on the outside of the connecting section 22, the transition portion 3 can be formed between the water pipe 4 and the connecting section 22 by hot melting, so that the water pipe 4 and the connecting section 22 are sealed. In other embodiments, the water pipe 4 and the connecting section 22 can also be connected by other methods. The connecting section 22 is a part of the catheter. The connecting section 22 is located between the water pipe 4 and the guide wire 1. The connecting section 22 is only sleeved on the outside of the guide wire 1, and there is no sealed connection between the two, so that the connecting section 22 has a gap to allow liquid to pass through.

[0033] In addition, when the water pipe 4 is sleeved on the outside of the connecting section 22 , this end of the water pipe 4 extends to abut against the expansion water bag 2 , so that the liquid medium in the water pipe 4 can be input into the expansion water bag 2 as quickly as possible.

[0034] When delivering liquid media, the other end of the water delivery tube 4 is connected to a water delivery device 5. In a preferred embodiment, the water delivery device 5 can be a syringe. During water delivery, liquid is injected through the syringe, which then enters the expansion bladder 2 through the water delivery tube 4 and the gap at the connecting section 22, causing the expansion bladder 2 to expand. Liquid can also be withdrawn through the syringe, causing the liquid in the expansion bladder 2 to flow out through the gap at the connecting section 22 and the water delivery tube 4, causing the expansion bladder 2 to contract.

[0035] In order to prevent the liquid in the expansion balloon 2 from flowing out when the expansion balloon 2 expands, the guide section 21 is sealed to the guide wire 1 .

[0036] In another embodiment, Figure 3 As shown, the water delivery pipe 4 is provided with a scale 6. The scale 6 is provided to display the amount of liquid, and the delivery amount of the liquid can be visually observed very intuitively.

[0037] The occluder used in the flexible ureteroscope in this solution can be used for both ureteroscopic and flexible ureteroscopic procedures. During ureteroscopic surgery, the dilation balloon 2 enters the ureter and provides support and expansion. After expansion, the dilation balloon 2 is placed in front of the ureteroscope to dilate the ureter, making it safer than a rigid ureteroscope. During flexible ureteroscopic surgery, when not filled with water, the occluder is passed through the flexible sheath into the renal pelvis. Filling with water expands the dilation balloon 2, which acts as a stone blocker.

[0038] In this solution, the expansion balloon 2 is guided by the guide wire 1, and the liquid in the expansion balloon 2 enters through the gap at the connecting section 22, which can make the diameter of the guide wire 1 thinner, reaching less than 3 mm, thereby making the overall pipeline diameter of the occluder smaller, so that the occluder used in the ureteroscope can be used for ureteroscope surgery.

[0039] The terms "installed," "disposed," "equipped with," and "connected" as used herein should be interpreted broadly. For example, they may refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0040] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the inventive purpose of the present invention, designs a structure and embodiment similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. An occluder for a flexible ureteroscope, characterized in that: include: Guidewire (1); A catheter is sleeved on the guide wire (1), the catheter comprising a sleeve section and an expansion section; the sleeve section comprises a guide section (21) and a connecting section (22), the expansion section is located between the guide section (21) and the connecting section (22), and the expansion section is an expansion water bag (2); A water delivery pipe (4) is used to deliver a liquid medium, one end of which is sleeved and connected to the outside of the connecting section (22), so that the connecting section (22) is located between the guide wire (1) and the water delivery pipe (4); the liquid medium enters or flows out of the expansion water bag (2) through the gap between the water delivery pipe (4) and the connecting section (22), causing the expansion water bag (2) to expand or contract.

2. The occluder for flexible ureteroscope according to claim 1, characterized in that: The expansion water bag (2), the guide section (21) and the connecting section (22) are integrally formed to form the catheter.

3. The occluder for flexible ureteroscope according to claim 1, characterized in that: The outer side of the expansion water balloon (2) is coated with a hydrophilic coating.

4. The occluder for use with a flexible ureteroscope according to any one of claims 1 to 3, characterized in that: One end of the water delivery pipe (4) is sealedly connected to the connecting section (22) via a transition portion (3).

5. The occluder for flexible ureteroscope according to claim 4, characterized in that: One end of the water delivery pipe (4) extends to abut against the expansion water bag (2).

6. The occluder for use with a flexible ureteroscope according to claim 5, characterized in that: The other end of the water delivery pipe (4) is connected to the water delivery device (5).

7. The occluder for use with a flexible ureteroscope according to claim 4, characterized in that: The guiding section (21) is sealedly connected to the guide wire (1).

8. The occluder for flexible ureteroscope according to claim 1, characterized in that: The water delivery pipe (4) is provided with a scale (6).

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