Balloon device

Abstract

The utility model relates to the technical field of medical balloons, in particular to a balloon device which comprises a catheter seat, a flexible catheter, a fixing ring and a balloon. One end of the flexible catheter is communicated with the catheter seat, the other end of the flexible catheter is fixedly connected with the fixing ring, the balloon is arranged on the side, away from the flexible catheter, of the fixing ring, and the flexible catheter is communicated with the balloon through a through hole in the fixing ring. Part of the balloon is attached to the circumferential contour of the fixing ring to form a connecting part, the balloon is fixedly connected with the fixing ring through the connecting part, and the balloon forms an expanding structure extending in the axial direction of the fixing ring after being expanded. In order to solve the technical problem that an existing ESD operation has defects, according to the balloon device, a catheter base is communicated with an external gas-liquid source, gas or liquid can be injected into a balloon through the catheter base so that the balloon can be filled, the filled balloon can eject pathological upper-layer mucous membrane tissue open, the lower layer of the mucous membrane can be exposed, and therefore the balloon device can be used for protecting the upper layer of the mucous membrane. Therefore, a doctor can conveniently perform stripping.

Description

Technical Field

[0001] This utility model relates to the field of medical balloon technology, specifically to a balloon device. Background Technology

[0002] Endoscopic submucosal dissection (ESD) is a widely used endoscopic gastrointestinal mucosal resection technique, primarily suitable for the resection of larger (diameter exceeding 2 cm) early-stage neoplastic lesions. Compared to other mucosal resection techniques, ESD has a higher rate of complete lesion resection, mainly due to its high controllability in both vertical and horizontal resection margins. During the procedure, the upper mucosal tissue may rest on the electrosurgical unit or the tip of the endoscope due to gravity, obstructing the view of the lesion and hindering the surgeon's observation of the target tissue.

[0003] In existing technologies, two common solutions are used to address the problem of visual field obstruction. Solution 1: Using two titanium clips and a self-made elastic band to retract the mucosal tissue above the lesion. The procedure involves first placing the elastic band over the clamping arm of one titanium clip, then clamping the mucosal tissue above the lesion. Next, the other titanium clip is inserted into the patient's body, passing through the elastic band and clamping in the area opposite the lesion, thus retracting the mucosal tissue above the lesion. Solution 2: Using titanium clips and a traction suture to retract the mucosal tissue above the lesion. The procedure involves first clamping a titanium clip with a connecting suture (usually dental floss) onto the mucosal tissue above the lesion. Then, a sufficiently long connecting suture is led out of the mouth for assisted traction by a nurse or assistant.

[0004] However, existing technologies have some practical problems. For Option 1: First, this procedure requires multiple insertions of the titanium clip through the endoscopic biopsy channel, which is time-consuming. Second, the second titanium clip is difficult to insert through the elastic band, easily leading to repeated insertions, increasing the surgical time and the risk of intraoperative bleeding. For Option 2: This procedure also requires insertion of the titanium clip through the endoscopic biopsy channel, which is time-consuming. Furthermore, it requires an additional assistant to help the surgeon with traction, and problems can easily occur during this process, potentially causing patient injury. Therefore, existing technologies need further improvement in terms of surgical efficiency and risk reduction. Utility Model Content

[0005] To address the technical problems of existing ESD procedures, this invention provides a balloon device in which a catheter seat is connected to an external gas or liquid source. Gas or liquid can be injected into the balloon through the catheter seat to inflate the balloon. The inflated balloon can push open the upper layer of mucosal tissue of the lesion, exposing the submucosa, thus facilitating the physician to perform dissection.

[0006] The technical solution provided by this utility model is as follows: a balloon device, including a catheter seat, a flexible catheter, a fixing ring, and a balloon. One end of the flexible catheter is connected to the catheter seat, and the other end of the flexible catheter is fixedly connected to the fixing ring. The balloon is disposed on the side of the fixing ring opposite to the flexible catheter, and the flexible catheter and the balloon are connected through a through hole on the fixing ring. A portion of the balloon conforms to the circumferential contour of the fixing ring to form a connecting part. The balloon is fixedly connected to the fixing ring through the connecting part. After inflation, the balloon forms an expanding structure extending axially along the fixing ring.

[0007] Optionally, the fixing ring is provided with a first opening, the size of which is smaller than the diameter of the fixing ring.

[0008] Optionally, the projection of the connecting portion toward the fixing ring side is in the shape of a fan ring, and the projection of the fan ring includes a second opening, the size of which is larger than the size of the first opening.

[0009] Optionally, the balloon includes a covering membrane and connecting ribs, the covering membrane being fixedly connected to the connecting ribs.

[0010] Optionally, the connecting ribs are straight, extending from the side closer to the fixing ring to the side farther from the fixing ring, and a plurality of straight connecting ribs are arranged in a circumferential array along the fixing ring.

[0011] Optionally, the connecting ribs are arc-shaped, and a plurality of arc-shaped connecting ribs are continuously arranged from the side closer to the fixing ring to the side farther away from the fixing ring.

[0012] Optionally, the diameter of the arc-shaped connecting rib remains constant or gradually increases from the side closer to the fixing ring to the side farther from the fixing ring.

[0013] Optionally, some of the connecting ribs are arc-shaped, and some of the connecting ribs are straight, with the straight connecting ribs intersecting each other, or the arc-shaped connecting ribs intersecting with the straight connecting ribs.

[0014] Optionally, both the fixing ring and the balloon are made of polymer materials.

[0015] Beneficial effects

[0016] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0017] 1) Improved Surgical Efficiency: The balloon device provided by this invention allows for control of balloon inflation by adjusting the amount of gas or liquid injected into the balloon. The expanded structure formed by the inflated balloon, extending axially along the fixing ring, can open the upper layer of mucosal tissue of the lesion, exposing the submucosa and facilitating dissection by the physician. Compared to existing techniques that use titanium clips and elastic bands to retract the upper layer of mucosal tissue, or titanium clips and traction wires to retract the upper layer of mucosal tissue, this method reduces the number of steps and improves surgical efficiency.

[0018] 2) Reduced surgical risks: Because the balloon device of this invention allows for submucosal dissection under conditions of clear vision and ample space, it reduces surgical time and operational difficulty, thereby lowering the incidence of intraoperative adverse events. Compared with existing technologies, this invention has significant advantages in reducing surgical risks.

[0019] 3) Reduced surgical difficulty: The balloon device of this invention is installed at the end of the endoscope via a fixing ring, which does not affect the operation of the electrocautery knife, making it easier for the surgeon to perform the operation.

[0020] 4) Wide range of applications: The balloon device of this utility model is suitable for various situations in endoscopic submucosal dissection (ESD). Whether the dissection area is small or large, it can be adapted by adjusting the inflation degree of the balloon, and has a wide range of applications. Attached Figure Description

[0021] Figure 1 This is one of the structural schematic diagrams of the balloon device proposed in the embodiment of this utility model.

[0022] Figure 2 This is the second schematic diagram of the balloon device proposed in the embodiment of this utility model.

[0023] Figure 3 This is the third schematic diagram of the balloon device proposed in the embodiment of this utility model.

[0024] Figure 4 This is a schematic diagram of the assembly of the fixing ring and the balloon according to an embodiment of the present invention.

[0025] Figure 5 This is one of the structural schematic diagrams of the balloon proposed in the embodiment of this utility model.

[0026] Figure 6 This is the second schematic diagram of the structure of the balloon proposed in this embodiment of the utility model.

[0027] Figure 7 The third schematic diagram of the structure of the balloon proposed in this embodiment of the utility model. Detailed Implementation

[0028] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0029] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the utility model. Furthermore, it should be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. The terms "first," "second," etc., used in this utility model are provided for the convenience of describing the technical solution of this utility model and have no specific limiting effect; they are all general terms and do not constitute a limitation on the technical solution of this utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model 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, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not contradict or conflict, all of which are within the scope of protection claimed by this utility model.

[0030] Combined with appendix Figure 1 To be continued Figure 7 This embodiment proposes a balloon device, including a catheter seat 1, a flexible catheter 2, a fixing ring 3, and a balloon 4. One end of the flexible catheter 2 is connected to the catheter seat 1, and the other end of the flexible catheter 2 is fixedly connected to the fixing ring 3. The balloon 4 is disposed on the side of the fixing ring 3 away from the flexible catheter 2, and the flexible catheter 2 and the balloon 4 are connected through a through hole on the fixing ring 3. A portion of the balloon 4 conforms to the circumferential contour of the fixing ring 3 to form a connecting part 41. The balloon 4 is fixedly connected to the fixing ring 3 through the connecting part 41. After the balloon 4 is inflated, it forms an expansion structure extending axially along the fixing ring 3.

[0031] To address the technical problems of existing ESD procedures, this embodiment proposes a balloon device in which the catheter seat 1 is connected to an external gas or liquid source. Gas or liquid can be injected into the balloon 4 through the catheter seat 1 to inflate the balloon 4. The inflated balloon 4 can push open the upper layer of mucosal tissue of the lesion, exposing the submucosa, thereby facilitating the physician to perform dissection.

[0032] The balloon device of this embodiment is generally used in conjunction with an endoscope. The fixing ring 3 can be a rigid structure made of polymer materials such as PC or ABS, and its shape can be ring-shaped or ring-shaped with an opening. The fixing ring 3 can be fitted onto the tube at the tip of the endoscope, and the balloon 4 is installed at the tip of the endoscope through the fixing ring 3. The catheter seat 1 in the balloon device is used to communicate with an external gas or liquid source. The balloon 4, the through hole on the fixing ring 3, the flexible catheter 2, and the catheter seat 1 constitute a flow path communicating with the external gas or liquid source. By controlling the flow of gas or liquid to the balloon 4, the balloon 4 can be inflated, thereby expanding the mucosal tissue.

[0033] As can be imagined, the inflation degree of balloon 4 can be controlled by adjusting the injection volume of gas or liquid. When the dissection area is small, less mucosal tissue needs to be opened, so it can be inflated only slightly; when the dissection area is large, more mucosal tissue needs to be opened, so balloon 4 can be fully inflated.

[0034] Combined with appendix Figure 4 In one specific embodiment, the fixing ring 3 is provided with a first opening 31, the size of which is smaller than the diameter of the fixing ring 3. As described above, the balloon 4 is installed at the tip of the endoscope via the fixing ring 3. In this embodiment, the first opening 31 makes the structure of the fixing ring 3 resemble a C-shape, allowing it to be snapped into the working channel of the endoscope, thus installing the fixing ring 3 at the endoscope tip. This method is simple and quick, and does not interfere with electrocautery or other surgical procedures.

[0035] In this embodiment, the portion of the balloon 4 that adheres to the fixing ring 3 is the connecting part 41. Furthermore, the projection of the connecting part 41 onto one side of the fixing ring 3 is fan-shaped, and the projection of the fan-shaped ring includes a second opening 42, the size of which is larger than the size of the first opening 31. This embodiment further constrains the structure of the balloon 4, preventing the balloon 4 from covering the endoscope tube too much after inflation, thus avoiding the balloon 4 itself becoming an obstruction affecting the field of vision. Additionally, this design leaves a blank area on the fixing ring 3, allowing for a clamping part during assembly, and also making it more convenient to assemble the balloon 4 and the fixing ring 3 using methods such as bonding or welding.

[0036] In this embodiment, the balloon 4 is composed of a covering membrane 43 and connecting ribs 44, which are fixedly connected. The combination of the covering membrane 43 and the connecting ribs 44 not only satisfies the requirement for the balloon 4 to expand after inflation but also constrains its shape after inflation, ensuring that it achieves the expected shape and effect after inflation. It is understood that the connecting ribs 44 can be used in various combinations; that is, the connecting ribs 44 can be of any shape and arranged in any manner, and different shapes of connecting ribs 44 can be combined in various ways according to actual needs. In short, by rationally configuring the direction, shape, and number of connecting ribs 44, the expansion method and shape of the balloon 4 can be precisely controlled.

[0037] Both the covering membrane 43 and the connecting rib 44 are made of polymer materials, preferably Pebax or PA. Based on the above material selection, in a further embodiment, the covering membrane 43 and the connecting rib 44 can be integrally formed, wherein the connecting rib 44 is composed of a relatively thicker part of the material to improve local strength and constrain the shape of the balloon 4, while the covering membrane 43 is composed of a relatively thinner part of the material to ensure the expansion effect.

[0038] Combined with appendix Figure 5 In a preferred embodiment, the connecting ribs 44 are straight, extending from the side near the fixation ring 3 to the side away from the fixation ring 3, and several straight connecting ribs 44 are arranged in a circumferential array along the fixation ring 3. In this embodiment, when the balloon 4 is not inflated, the end of the balloon 4 away from the fixation ring 3 can be tapered into a cone shape, making it easier to follow the endoscope tip into the cut submucosal layer. When the balloon 4 is inflated, it can form a "brim"-like opening structure to push open the upper mucosal tissue of the lesion, avoiding obstruction of the field of vision during the removal of the lesion tissue and preventing the surgeon from observing the target tissue.

[0039] Combined with appendix Figure 6 In another preferred embodiment, the connecting ribs 44 are arc-shaped, and several arc-shaped connecting ribs 44 are continuously arranged from the side closer to the fixing ring 3 to the side farther away from the fixing ring 3. In this embodiment, when the balloon 4 is not inflated, it can be fully folded, and the outline of the folded balloon 4 is similar to the outline of the fixing ring 3. At this time, the folded balloon 4 can fully fit on the fixing ring 3, thus making it easier to follow the endoscope tip into the cut submucosal layer.

[0040] Combined with appendix Figure 7In a further improved embodiment, for these continuously arranged arc-shaped connecting ribs 44, the diameter of these connecting ribs 44 remains constant or gradually increases from the side closer to the fixing ring 3 to the side farther away from the fixing ring 3. As can be seen from the foregoing description, the connecting ribs 44 constrain the shape of the balloon 4, while the shape of the balloon 4 must adapt to the requirements. Therefore, when the diameters of these arc-shaped connecting ribs 44 are equal, when the balloon 4 inflates, its axial dimensions are basically uniform, which can meet the usage requirements. However, when the diameters of these arc-shaped connecting ribs 44 gradually increase from the side closer to the fixing ring 3 to the side farther away from the fixing ring 3, since the covering membrane 43 near the larger diameter connecting rib 44 requires a larger amount of gas to expand, the degree of expansion is also greater, thus achieving a better expansion effect, thereby fully opening the upper mucosal tissue of the lesion and better avoiding obstruction of the field of vision when removing the lesion tissue.

[0041] Furthermore, in other embodiments, some connecting ribs 44 are arc-shaped, and some are straight. The straight connecting ribs 44 intersect each other, or the arc-shaped connecting ribs 44 intersect with the straight connecting ribs 44. Obviously, the arc-shaped connecting ribs 44 and the straight connecting ribs 44 can be combined to form more structural forms. Designers can design and precisely control the expansion mode and shape of the balloon 4 by reasonably configuring the direction and number of straight or arc-shaped connecting ribs 44.

[0042] In summary, the balloon device proposed in this embodiment has the following beneficial effects:

[0043] 1) Improved Surgical Efficiency: The balloon device provided by this invention allows for control of the balloon 4's inflation level by adjusting the amount of gas or liquid injected. The expanded structure formed by the balloon 4, extending axially along the fixing ring 3, can open the upper layer of mucosal tissue of the lesion, exposing the submucosa and facilitating dissection by the physician. Compared to existing techniques that use titanium clips and elastic bands to retract the upper layer of mucosal tissue, or titanium clips and traction wires to retract the upper layer of mucosal tissue, this method reduces the number of steps and improves surgical efficiency.

[0044] 2) Reduced surgical risks: Because the balloon device of this invention allows for submucosal dissection under conditions of clear vision and ample space, it reduces surgical time and operational difficulty, thereby lowering the incidence of intraoperative adverse events. Compared with existing technologies, this invention has significant advantages in reducing surgical risks.

[0045] 3) Reduced surgical difficulty: The balloon device of this utility model, with the balloon 4 installed at the end of the endoscope via the fixing ring 3, will not affect the operation of the electrocautery knife, making it easier for the surgeon to perform the operation.

[0046] 4) Wide range of applications: The balloon device of this utility model is suitable for various situations in endoscopic submucosal dissection (ESD). Whether the dissection area is small or large, it can be adapted by adjusting the inflation degree of the balloon 4, and has a wide range of applications.

[0047] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A balloon device, characterized in that, It includes a catheter hub (1), a flexible catheter (2), a fixation ring (3), and a balloon (4); One end of the flexible catheter (2) is connected to the catheter seat (1), and the other end of the flexible catheter (2) is fixedly connected to the fixing ring (3). The balloon (4) is disposed on the side of the fixing ring (3) away from the flexible catheter (2). The flexible catheter (2) and the balloon (4) are connected through the through hole on the fixing ring (3). Part of the balloon (4) fits into the circumferential contour of the fixing ring (3) to form a connecting part (41). The balloon (4) is fixedly connected to the fixing ring (3) through the connecting part (41). After the balloon (4) is inflated, it forms an expansion structure that extends axially along the fixing ring (3).

2. The balloon device according to claim 1, characterized in that, The fixing ring (3) is provided with a first opening (31), the size of which is smaller than the diameter of the fixing ring (3).

3. The balloon device according to claim 2, characterized in that, The projection of the connecting part (41) toward the fixing ring (3) is in the shape of a fan ring. The projection of the fan ring includes a second opening (42), the size of which is larger than the size of the first opening (31).

4. The balloon device according to claim 1, characterized in that, The balloon (4) includes a covering membrane (43) and a connecting rib (44), wherein the covering membrane (43) and the connecting rib (44) are fixedly connected.

5. A balloon device according to claim 4, characterized in that, The connecting rib (44) is straight and extends from the side close to the fixing ring (3) to the side away from the fixing ring (3). Several straight connecting ribs (44) are arranged in a circumferential array along the fixing ring (3).

6. A balloon device according to claim 4, characterized in that, The connecting ribs (44) are arc-shaped, and several arc-shaped connecting ribs (44) are continuously arranged from the side closer to the fixing ring (3) to the side farther away from the fixing ring (3).

7. A balloon device according to claim 6, characterized in that, The diameter of the arc-shaped connecting rib (44) remains constant or gradually increases from the side closer to the fixing ring (3) to the side farther away from the fixing ring (3).

8. A balloon device according to claim 4, characterized in that, Some of the connecting ribs (44) are arc-shaped, and some of the connecting ribs (44) are straight. The straight connecting ribs (44) intersect each other, or the arc-shaped connecting ribs (44) intersect with the straight connecting ribs (44).

9. A balloon device according to claim 1, characterized in that, Both the fixing ring (3) and the balloon (4) are made of polymer materials.

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