Occluder for flexible ureteroscope

Abstract

Provided is an occluder for a flexible ureteroscope, which relates to the technical field of medical devices. The occluder comprises a guide wire (1), a catheter, and a water delivery tube (4). The catheter is sleeved on the guide wire (1), and the catheter comprises a sleeving segment and an expansion segment. The sleeving segment comprises a guiding segment (21) and a connecting segment (22). The expansion segment is located between the guiding segment (21) and the connecting segment (22), and the expansion segment is an expansion water balloon (2). The water delivery tube (4) is configured to deliver a liquid medium, and one end of the water delivery tube is sleeved on and connected to an outer side of the connecting segment (22), such that the connecting segment (22) is located between the guide wire (1) and the water delivery tube (4). The liquid medium enters or flows out of the expansion water balloon (2) through a gap between the water delivery tube (4) and the connecting segment (22), causing the expansion water balloon (2) to expand or contract. The occluder allows the diameter of the guide wire (1) to be set thinner, such that the overall tube diameter of the occluder can be smaller, enabling the occluder for the flexible ureteroscope to be applicable in flexible ureteroscopy procedures.

Description

A plugger for ureter soft mirror TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field more specifically, relate to a kind of plugger for ureter soft mirror. BACKGROUND

[0002] Ureteral calculus, kidney calculus is the most common, the most numerous disease of urology. Now the routine processing calculus surgical method is usually ureteroscope, ureter soft mirror and percutaneous nephrolithotomy.

[0003] In calculus surgery, the most common application is ureter soft mirror surgery for treating kidney calculus. In soft mirror surgery, it needs to be placed through soft mirror sheath, and then ureter soft mirror operation is carried out in the sheath. However, soft mirror sheath has limitations, and calculus can only be crushed, but cannot be discharged.

[0004] Another way uses pipeline plugger, and pipeline plugger is a safe and effective tool for treating ureteral calculus, which can significantly reduce calculus drift during ureteroscopy, improve calculus clearance rate, shorten operation time, and drag calculus fragments out of ureteral cavity to reduce postoperative calculus pain, with good clinical application value. At home and abroad, currently commonly used is mechanical plugger, which is placed in ureter and placed on the upper end of stone, and controlled by external switch, so that the plugger is opened to block the calculus. However, the existing plugger is commonly used for ureteroscopy, and the pipeline diameter of the existing plugger is larger, so it is not easy to put into operation when used for ureter soft mirror.

[0005] UTILITY MODEL CONTENTS

[0006] The utility model provides a kind of plugger for ureter soft mirror, which can further reduce the pipeline diameter of the plugger, so that the plugger can be used for ureter soft mirror.

[0007] To achieve the above purpose, the technical scheme provided by the utility model is as follows:

[0008] A plugger for ureter soft mirror, comprising:

[0009] A guide wire;

[0010] A catheter is sleeved on the guide wire, and the catheter comprises a sleeving section and an expansion section; the sleeving section comprises a guide section and a connecting section, and the expansion section is located between the guide section and the connecting section; the expansion section is an expansion water bag;

[0011] A water pipe for conveying liquid medium is sleeved with a connecting section outside 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 water pipe and the connecting section gap to expand or shrink the expansion water bag.

[0012] Further, the expansion water bag, the guide section and the connecting section are integrally formed to form the catheter.

[0013] Further, the expansion water bag is coated with a hydrophilic coating outside.

[0014] Further, one end of the water pipe is sealingly connected with the connecting section through an adapter.

[0015] Further, one end of the water pipe extends to abut against the expansion water bag.

[0016] Further, the other end of the water pipe is connected with a water feeder.

[0017] Further, the guide section is sealingly connected with the guide wire.

[0018] Further, the water pipe is provided with a scale.

[0019] Compared with the prior art, the technical scheme has the following beneficial effects: in the scheme, the liquid medium enters or flows out of the expansion water bag through the water pipe and the connecting section gap to expand or shrink the expansion water bag, so that the diameter of the guide wire can be set thinner, thereby making the overall pipe diameter of the occluder smaller, and enabling the occluder used by the ureteral soft mirror to be used for ureteral soft mirror surgery. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is a structural schematic view of an occluder used by a ureteral soft mirror;

[0021] Fig. 2 is an enlarged view of A in Fig. 1;

[0022] Fig. 3 is a structural schematic view of an occluder provided with a scale on a water pipe.

[0023] Label explanation: 1, guide wire; 2, expansion water bag; 21, guide section; 22, connecting section; 3, adapter; 4, water pipe; 5, water feeder; 6, scale. DETAILED DESCRIPTION

[0024] In order to further understand the content of the present application, the present application will be described in detail in conjunction with the drawings and examples.

[0025] The structure, proportion, size and the like shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not have technical substantive significance, and any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and the like cited in the specification are only for the convenience of clear description, and are not used to limit the implementable range, and the change or adjustment of the relative relationship is also considered as the implementable scope of the utility model without substantially changing the technical content.

[0026] In addition, in addition to being used to represent the orientation or positional relationship, the above-mentioned terms can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances.

[0027] As shown in FIG. 1, the present embodiment provides a plugger for ureter flexible mirror, which comprises a guide wire 1, a catheter and a water delivery tube 4.

[0028] The catheter is sleeved on the guide wire 1, and the catheter comprises a sleeving section and an expansion section; the sleeving section comprises a guide section 21 and a connecting section 22, and 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 delivery tube 4 is used to deliver liquid medium, and preferably, the liquid medium is normal saline. One end of the water delivery tube 4 is sleeved and connected outside the connecting section 22, so that the connecting section 22 is located between the guide wire 1 and the water delivery tube 4, and after the connecting section 22 is arranged between the guide wire 1 and the water delivery tube 4, a gap is formed at the connecting section 22, which can be understood as that the guide wire 1 and the water delivery tube 4 are not sealed and connected through the connecting section 22 of the catheter. The liquid medium enters the expansion water bag 2 through the water delivery tube 4 and the gap of 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 delivery tube 4 to shrink the expansion water bag 2.

[0029] Regarding the guide section 21 and the connecting section 22, the guide section 21 is located at the left end of the guide wire 1, and during the operation process, this end is the front end of the guide wire 1; the connecting section 22 is located at the right end of the guide wire 1, and during the operation process, this end is the tail end of the guide wire 1.

[0030] The length of the guide wire 1 is 50 cm, and the diameter of the guide wire 1 is less than 3 mm. The expanded water bag 2 is oval after expansion, the length of the expanded water bag 2 is 30-40 mm, and the maximum diameter of the expanded water bag 2 is 5-6 mm after expansion. Preferably, the diameter of the guide wire 1 is set to 3 mm, the length of the expanded water bag 2 is set to 35 mm, and the maximum diameter of the expanded water bag 2 is 5 mm after expansion.

[0031] As a preferred embodiment, the expanded water bag 2, the guide section 21 and the connecting section 22 are integrally formed to form a catheter. The catheter can be made of elastic materials such as silicone, and the wall thickness at the expanded water bag 2 is set to be thinner, so that the expanded water bag 2 can be expanded, and the outer side of the expanded water bag 2 is coated with a hydrophilic coating.

[0032] In combination with Fig. 2, one end of the water delivery tube 4 is sleeved and connected to the outside of the connecting section 22. In one embodiment, one end of the water delivery tube 4 is connected to the connecting section 22 through the adapter 3, and after the water delivery tube 4 is sleeved outside the connecting section 22, the adapter 3 can be formed between the water delivery tube 4 and the connecting section 22 by hot melting, so that the water delivery tube 4 and the connecting section 22 are sealed and connected. In other embodiments, the water delivery tube 4 and the connecting section 22 can also be connected by other means. The connecting section 22 is part of the catheter, and the connecting section 22 is located between the water delivery tube 4 and the guide wire 1. The connecting section 22 is only sleeved outside the guide wire 1, and the two are not sealed and connected, so that the connecting section 22 has a gap to allow liquid to pass through.

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

[0034] When delivering liquid medium, the other end of the water delivery tube 4 is connected with the water delivery device 5. As a preferred embodiment, the water delivery device 5 can be selected as a syringe. When delivering water, liquid is injected through the syringe, and the liquid enters the expanded water bag 2 through the water delivery tube 4 and the gap at the connecting section 22, so that the expanded water bag 2 is expanded. The liquid in the expanded water bag 2 can also be extracted through the syringe, so that the liquid flows out through the gap at the connecting section 22 and the water delivery tube 4, so that the expanded water bag 2 is contracted.

[0035] In order to avoid the liquid in the expanded water bag 2 flowing out when the expanded water bag 2 is expanded, the guide section 21 is sealed and connected with the guide wire 1.

[0036] In another embodiment, as shown in Fig. 3, the water delivery tube 4 is provided with a scale 6. The scale 6 is provided to display the amount of liquid, which is very intuitive to visually display the delivery amount of liquid.

[0037] The occluder used by the ureter flexible mirror in the scheme can be used for ureteroscopy and flexible mirror surgery. When performing ureteroscopy, the dilatation water bag 2 can play a supporting and dilating role after entering the ureter. After the dilatation water bag 2 is dilated and rests on the front of the ureteroscope, the ureter is dilated, which is safer than the hard ureteroscope. When performing flexible mirror surgery, the dilatation water bag 2 is dilated by water to play a stone occlusion role.

[0038] In the scheme, the dilatation water bag 2 is guided by the guide wire 1, and the liquid in the dilatation water bag 2 enters through the gap at the connecting section 22, which can make the diameter of the guide wire 1 thinner, less than 3 mm, so that the overall pipeline diameter of the occluder is smaller, and the occluder used by the ureter flexible mirror can be used for ureter flexible mirror surgery.

[0039] Some terms "mounting", "setting", "provided with", "connection" in the application should be understood broadly. For example, it can be fixed connection, detachable connection, or integral structure; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication between two devices, elements or components. For ordinary skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0040] The above describes the utility model and its embodiments in a schematic way, which is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the utility model, and the actual structure is not limited thereto. Therefore, if the ordinary skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structure and embodiments can be designed without creativity, which should belong to the protection scope of the utility model.

Claims

1. An occluder for use with a flexible ureteroscope, characterized in that, The utility model relates to a kind of medical devices, including: A guide wire (1); A catheter is sleeved on the guide wire (1), and the catheter includes a sleeving section and a dilating section;The sleeving section includes a guide section (21) and a connecting section (22), and the dilating section is located between the guide section (21) and the connecting section (22), and the dilating section is a dilating water bag (2); A water delivery tube (4) for delivering liquid medium, one end of which is 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 tube (4);The liquid medium enters or flows out of the dilating water bag (2) through the gap between the water delivery tube (4) and the connecting section (22), so that the dilating water bag (2) expands or shrinks.

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

3. The occluder for use with a flexible ureteroscope according to claim 1, characterized in that: The outside of the dilating water bag (2) is coated with a hydrophilic coating.

4. The occluder for use with a flexible ureteroscope according to any one of claims 1-3, characterized in that: One end of the water delivery tube (4) is sealingly connected to the connecting section (22) through an adapter (3).

5. The occluder for use with a flexible ureteroscope according to claim 4, characterized in that: One end of the water delivery tube (4) extends to abut against the dilating 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 tube (4) is connected to a water delivery device (5).

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

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

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