Anti-slip integrated balloon dilatation instrument

Abstract

The utility model relates to an anti-slip integrated balloon dilatation instrument which comprises a catheter and a balloon fixedly arranged on the catheter, particularly, the balloon comprises a dilatation section and anti-slip sections arranged at the two ends of the dilatation section, and the anti-slip sections are arranged at the two ends of the dilatation section through additional balloon shoulder structures arranged at the two ends of the balloon. The balloon can be prevented from sliding and displacing with the mucous membrane on the inner wall of the esophagus in the dilation process, so that the dilation curative effect is improved, the operation failure risk is effectively reduced, and the physical output of an operator in the operation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of disposable medical instruments and medical equipment, in particular to an anti-slip integrated balloon dilation instrument. Background Art

[0002] Chemical burns of the esophagus and surgical scars can lead to benign esophageal stenosis. The main clinical manifestations are dysphagia, pain when swallowing, and weight loss. The main treatment methods in the existing technology include surgical treatment and balloon dilatation. Among them, the traditional surgical treatment method is very painful for patients, expensive, and has many postoperative complications; in contrast, balloon dilatation treatment is less painful for patients, has low costs, recovers quickly, and has fewer postoperative complications, which has significant advantages.

[0003] However, in the actual operation of balloon dilatation treatment, due to the smooth mucosal lining of the esophagus, existing balloon dilatation catheters often slide and shift when dilating esophageal stenosis, which directly affects the dilatation efficacy. The surgeon needs to pull the proximal end of the catheter as much as possible to reduce the sliding phenomenon, which greatly increases the surgeon's physical exertion and also increases the risk of surgical failure. Utility Model Content

[0004] In order to address the deficiencies of the prior art, the utility model proposes an anti-slip integrated balloon dilatation device. The additional shoulder structures at both ends of the balloon can prevent the balloon from sliding and displacing with the esophageal inner wall mucosa during the dilatation process, thereby improving the dilatation efficacy, effectively reducing the risk of surgical failure, and saving the operator's physical exertion during the operation.

[0005] In order to achieve the above objectives, the technical solutions adopted by the utility model include:

[0006] An anti-slip integrated balloon dilatation device, characterized in that it comprises a catheter and a balloon fixedly arranged on the catheter;

[0007] The catheter comprises a main cavity and a ventilation cavity which are separated from each other and do not communicate with each other, and the ventilation cavity is provided with at least one ventilation hole so that the ventilation cavity is connected with the inflation space inside the balloon;

[0008] The balloon is fixedly sheathed on the catheter to form an integrated inflation space inside the balloon, the balloon comprises an expansion section and anti-slip sections arranged at both ends of the expansion section, the anti-slip section is provided with a balloon shoulder structure, and the diameter of the balloon shoulder structure is greater than the diameter of the expansion section;

[0009] The balloon is connected to the ventilation cavity through the ventilation hole to perform an inflation operation to adjust the gas pressure in the inflation space to increase, and correspondingly performs a balloon expansion operation to an expansion treatment state; and the balloon is connected to the ventilation cavity through the ventilation hole to perform a deflation operation to adjust the gas pressure in the inflation space to decrease, and correspondingly performs a balloon contraction operation to a moving operation state.

[0010] Furthermore, the anti-slip section and the expansion section are connected via the bag shoulder structure.

[0011] Furthermore, in the moving operation state, the outer shape of the expansion section is a cylindrical shape with a constant diameter, and the diameter of the shoulder structure is 2 to 10 mm larger than the diameter of the expansion section.

[0012] Furthermore, in the expanded treatment state, the diameter of the capsule shoulder structure is at least larger than the diameter of the position where the expanded sections are connected.

[0013] Furthermore, the diameter of the outer shape of the anti-slip section decreases smoothly from the bag shoulder structure to the connection with the catheter, so that the outer shape of the anti-slip section is a bullet shape with a gradually decreasing diameter.

[0014] Furthermore, the ventilation cavity is provided with two ventilation holes, and the positions of the ventilation holes correspond to the anti-slip sections respectively.

[0015] Furthermore, it also includes a positioning mark, which is arranged on the expansion section.

[0016] The beneficial effects of the utility model are:

[0017] By using the anti-slip integrated balloon dilatation device described in the utility model, the shoulder structures additionally arranged at both ends of the balloon are made so that the raised shoulder structures at both ends after inflation have a certain height difference with the horizontal dilatation balloon, and the sliding and displaced esophageal stricture segment can be stuck by the raised shoulder structure, which can prevent the balloon from slipping out of the stricture segment and sliding and displacing with the inner wall mucosa of the esophagus during the dilatation process, thereby improving the dilatation efficacy, effectively reducing the risk of surgical failure, and saving the operator's physical exertion during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a preferred embodiment of the anti-slip integrated balloon dilation device of the utility model.

[0019] Figure 2 This is a schematic diagram of the mobile operation state of the preferred embodiment of the utility model.

[0020] Figure 3 This is a schematic diagram of the expansion treatment state of the preferred embodiment of the utility model.

[0021] Explanation of the accompanying figures: 1-catheter, 11-main cavity, 12-ventilation cavity, 13-vent, 2-balloon, 21-inflated space, 22-expansion section, 23-anti-slip section, 24-shoulder structure, 3-esophagus, 31-stricture section. DETAILED DESCRIPTION

[0022] In order to more clearly understand the content of the utility model, it will be described in detail with reference to the drawings and embodiments.

[0023] like Figure 1 The figure shows a schematic diagram of a preferred embodiment of the anti-slip integrated balloon dilatation device of the utility model, the main structure of which includes a catheter 1 and a balloon 2 fixedly sleeved on the catheter 1. The catheter 1 includes a main lumen 11 and a ventilation lumen 12 which are separated from each other and do not communicate with each other. The main lumen 11 is used to accommodate the guide wire and liquids such as contrast agents required for intraoperative operation; the ventilation lumen 12 is used for gas conduction, and is only used to provide the necessary gas flow channel for the air pressure change required for inflation and deflation of the balloon 2. The material selected is capable of withstanding appropriate air pressure changes without deformation.

[0024] The balloon 2 is fixedly mounted on the catheter 1, and an air-filled space 21 is formed inside that is closed relative to the outside. The air-filled space 21 is an integrated through-type, and the total length of the balloon 2 with an integrated structure can be preferably about 80 mm. In particular, the balloon 2 can be clearly divided into an expansion section 22 and an anti-slip section 23 arranged at both ends of the expansion section 22 in terms of external structure, wherein the anti-slip section 23 has a shoulder structure 24 with a significantly larger diameter than the expansion section 22, so that a certain height difference is formed between it and the expansion section 22, so that the expansion section 22 partially forms a relative groove-like state, and at the same time, the internal space (air-filled space 21) of the balloon 2 corresponding to the expansion section 22 and the anti-slip section 23 is still essentially integrated, that is, in actual use, the expansion section 22 and the anti-slip section 23 still synchronously perform the inflation and deflation operations of the corresponding balloon 2. In terms of functional realization, the expansion section 22 corresponds to the support and expansion component of the esophageal stenosis section realized by the traditional expansion device. Ideally, the additional anti-slip section 23 does not directly correspond to the operating position of the esophageal stricture segment during use to achieve clear therapeutic effects such as support and expansion. When the expansion segment 22 can accurately achieve the required support and expansion at the preset position, the anti-slip section 23 may not provide any specific function (for example, not actually contacting the esophagus), or it may only provide a certain support effect (for example, contacting the esophagus). However, when the expansion segment 22 cannot accurately achieve the required support and expansion at the preset position, for example, the expansion segment 22 slides after contacting the esophageal stricture segment, resulting in position deviation, the shoulder structure 24 of the anti-slip section 23 can achieve the limiting function of the overall balloon 2 relative to the esophagus by abutting against the raised part of the stricture segment, thereby ensuring that the expansion segment 22 can effectively act on the esophageal stricture segment. Obviously, the anti-slip sections 23 respectively arranged at the two ends of the expansion section 22 can provide the limiting function in both directions of entering and exiting the esophagus. In certain specific application cases, the balloon 2 may realize the limiting fixation of the entire balloon 2 relative to the esophagus by having the anti-slip sections 23 at both ends simultaneously abut against the raised parts of the narrow section, so that the expansion section 22 can accurately act on the narrow section of the esophagus.

[0025] In a preferred embodiment, the external shape of the expansion section 22 in the mobile operation state when the balloon 2 is not inflated and the expansion operation is performed is a cylindrical shape with a constant diameter, for example, preferably a cylindrical shape with a diameter of 8 to 18 mm. The bag shoulder structure 24 is preferably a connection structure between the seat anti-slip section 23 and the expansion section 22, and forms a relatively vertical obvious height difference protrusion relative to the expansion section 22. For example, the diameter of the bag shoulder structure 24 is selected to be 2 to 10 mm larger than the diameter of the expansion section 22. When the balloon 2 is inflated to perform the balloon 2 expansion operation to the expansion treatment state, the expansion section 22 and the anti-slip section 23 will expand due to the increase in air pressure in the inflation space 21. At the same time, the bag shoulder structure 24 can still at least ensure that it is at least larger than the diameter of the connection position of the expansion section 22, so that in the expansion treatment state, the anti-slip section 23 (bag shoulder structure 24) can still achieve the limiting function in the esophagus direction.

[0026] In order to enable the ventilation channel 12 to inflate and deflate the balloon 2, the ventilation channel 12 is connected to the inflation space 21 of the balloon 2 through the ventilation hole 13. In the preferred embodiment, the ventilation channel 12 is provided with two ventilation holes 13 at positions corresponding to the positions close to the anti-slip section 23. In actual use, the ventilation holes 13 close to the two ends of the balloon 2 (the anti-slip section 23) can make the inflation space 21 achieve more uniform pressure changes, and avoid the local pressure changes in the expansion section 22 affecting the use effect of the device.

[0027] Preferably, the diameter of the outer shape of the anti-slip section 23 decreases smoothly from the shoulder structure 24 to the connection with the catheter 1, that is, the outer shape of the anti-slip section 23 is a bullet shape with a gradually decreasing diameter, which can reduce the volume of the material at both ends of the balloon 2 and facilitate the uninflated balloon 2 to pass through the narrow section of the esophagus.

[0028] Preferably, a positioning mark may also be provided in the balloon 2, such as an X-ray-developable linear positioning mark provided in the wall of the expansion segment 22 of the balloon 2, so as to facilitate the operator to accurately locate the esophageal stricture segment and the horizontal expansion balloon 2 during the operation and monitor the relative position between the two at any time, thereby helping the operator to fully control the intraoperative situation.

[0029] like Figure 2 The figure shows the relationship between the preferred embodiment of the utility model and the esophagus 3 and the narrow section 31 in the moving operation state. The bullet-shaped anti-slip section 23 with a smaller end diameter can make the balloon 2 pass through the narrow section 31 more smoothly, so that the expansion section 22 can effectively match the corresponding narrow section 31. Figure 3 The preferred embodiment of the utility model is shown in the expansion treatment state. The expansion operation of the balloon 2 is performed by inflation so that the expansion section 22 supports and expands the narrow section 31. At the same time, the anti-slip section 23 (the shoulder structure 24) can provide a limit relative to the esophagus 3 by abutting against the raised part of the narrow section 31 to prevent the expansion section 22 from sliding. In actual use, the specific operation method of the preferred embodiment is similar to that of the existing conventional balloon 2 expansion device. Under the guidance of the guide wire, the catheter 1 and the balloon 2 are inserted into the narrow section 31 of the esophagus 3, the linear mark is aligned with the position of the narrow section 31, the guide wire is withdrawn, and air is injected into the balloon 2 through the ventilation cavity 12. The air rushes out from the ventilation hole 13 into the inflation space 21 of the balloon 2, and the balloon 2 begins to expand. The shoulder structures 24 at both ends and the expansion section 22 are gradually unfolded. The shoulder structures 24 at both ends can prevent the balloon 2 and the narrow section 31 of the esophagus 3 from sliding relative to each other. The expansion section 22 expands the narrow section 31 of the esophagus 3, and finally achieves the purpose of accurately expanding and treating the narrow section 31 of the esophagus 3.

[0030] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An anti-slip integrated balloon dilatation device, characterized in that: It comprises a catheter and a balloon fixedly arranged on the catheter; The catheter comprises a main cavity and a ventilation cavity which are separated from each other and do not communicate with each other, and the ventilation cavity is provided with at least one ventilation hole so that the ventilation cavity is connected with the inflation space inside the balloon; The balloon is fixedly sheathed on the catheter to form an integrated inflation space inside the balloon, the balloon comprises an expansion section and anti-slip sections arranged at both ends of the expansion section, the anti-slip section is provided with a balloon shoulder structure, and the diameter of the balloon shoulder structure is greater than the diameter of the expansion section; The balloon is connected to the ventilation cavity through the ventilation hole to perform an inflation operation to adjust the gas pressure in the inflation space to increase, and correspondingly performs a balloon expansion operation to an expansion treatment state; and the balloon is connected to the ventilation cavity through the ventilation hole to perform a deflation operation to adjust the gas pressure in the inflation space to decrease, and correspondingly performs a balloon contraction operation to a moving operation state.

2. The balloon dilatation device according to claim 1, characterized in that: The anti-slip section is connected to the expansion section through the bag shoulder structure.

3. The balloon dilatation device according to claim 2, characterized in that: In the moving operation state, the external shape of the expansion section is a cylindrical shape with a constant diameter, and the diameter of the shoulder structure is 2 to 10 mm larger than the diameter of the expansion section.

4. The balloon dilatation device according to claim 2, characterized in that: In the expanded treatment state, the diameter of the shoulder structure is at least larger than the diameter of the position where the expanded sections are connected.

5. The balloon dilatation device according to claim 2, characterized in that: The diameter of the outer shape of the anti-slip section decreases smoothly from the bag shoulder structure to the connection with the catheter, so that the outer shape of the anti-slip section is a bullet shape with a gradually decreasing diameter.

6. The balloon dilatation device according to claim 1, characterized in that: The ventilation cavity is provided with two ventilation holes, and the positions of the ventilation holes correspond to the anti-slip sections respectively.

7. The balloon dilatation device according to claim 1, characterized in that: It also includes a positioning mark, which is arranged on the expansion section.

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