Mediastinal esophageal bed protector

Abstract

This utility model discloses a protective sleeve for the mediastinal esophagus bed, including a protective sleeve body, the protective sleeve body including a main tube membrane; the main tube membrane has a first opening and a second opening at both ends, and a lumen is formed inside connecting the first opening and the second opening, the lumen allowing the tubular stomach to pass through; a first flared mouth is formed at the first opening, the first flared mouth having a narrow end and a wide end, the narrow end of the first flared mouth facing the direction of the first opening; a second flared mouth is formed at the second opening, the second flared mouth having a narrow end and a wide end, the narrow end of the second flared mouth facing the direction of the second opening. This utility model can isolate the tubular stomach from the surrounding structures of the posterior mediastinum during the lifting of the tubular stomach, forming a channel that allows the tubular stomach to easily reach the neck, improving the smoothness of the tubular stomach lifting process.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, specifically to a protective sleeve for a mediastinal esophageal bed. Background Technology

[0002] Minimally Invasive Esophagectomy (MIE) is a surgical treatment for esophageal cancer performed through minimal incisions. It combines modern surgical and endoscopic techniques to achieve radical resection of the esophagus with minimal trauma, offering many advantages unmatched by traditional open surgery. Minimally invasive esophagectomy can involve intrathoracic or cervical anastomosis. For cervical anastomosis, the stomach is created into a tubular stomach approximately 3 cm wide using a cutting and suturing device, and then pulled up through the thoracic cavity or neck to the esophageal resection site to restore patency of the digestive tract. For cervical anastomosis, the tubular stomach is pulled up through the posterior mediastinum or behind the sternum to the neck; the posterior mediastinum route is more common. Most surgeons use double 7-silk sutures to connect the tubular stomach, pulling it up to the neck "blindly."

[0003] Because the space in the posterior mediastinal esophageal bed is small and there are many structures around it, the process of lifting the tubular stomach may be blocked by these structures. The process of lifting the tubular stomach may be stuck or not smooth, the upper part of the tubular stomach may be tense and the lower part near the pylorus may be relaxed, or even intrathoracic accessory damage may occur. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a mediastinal esophageal bed protective sleeve, which can isolate the tubular stomach and the surrounding structures of the posterior mediastinum during the process of lifting the tubular stomach, forming a channel that allows the tubular stomach to easily reach the neck, thereby improving the smoothness of the process of lifting the tubular stomach.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A protective sleeve for a mediastinal esophageal bed, characterized in that it includes a protective sleeve body, the protective sleeve body including a main tube membrane; the main tube membrane has a first opening and a second opening at both ends, and a lumen is formed inside that connects the first opening and the second opening, the lumen allowing a tubular stomach to pass through;

[0007] A first flared mouth is formed at the first opening, the first flared mouth having a narrow end and a wide end, the narrow end of the first flared mouth being positioned toward the first opening;

[0008] A second flared mouth is formed at the second opening. The second flared mouth has a narrow end and a wide end, with the narrow end of the second flared mouth facing the direction of the second opening.

[0009] In one optional embodiment, the protective sleeve body further includes a first thread and a second thread; the first thread is disposed at the wide end of the first flared opening, and the second thread is disposed at the wide end of the second flared opening.

[0010] In one optional embodiment, a first channel is formed on the wide end edge of the first flared opening, and a first perforation is provided on the first channel; the first thread is threaded through the first channel, and both ends of the first thread extend from the first perforation to the outside of the first channel.

[0011] In one optional embodiment, both the first and second threads are No. 10 threads.

[0012] In one optional embodiment, the main tube membrane is a tubular membrane with a length of 50cm and a diameter of 5cm, and the wide end diameters of the first and second flared openings are both 8cm.

[0013] In one alternative embodiment, the main pipe membrane is made of polyurethane or silicone material, and the surface of the main pipe membrane is coated with a biocompatible lubricant.

[0014] In one optional embodiment, a guide tube is further included, with a first end and a second end formed at both ends of the guide tube. The first end passes through the cavity, and the second end extends out of the cavity. A connecting portion is provided on the first end.

[0015] In one optional embodiment, the connecting portion is a connecting through hole.

[0016] In one optional embodiment, a balloon is provided at the first end of the guide tube, and a inflation / contraction control device is connected to the second end of the guide tube. The inflation / contraction control device is connected to the balloon, and a medium is injected into or extracted from the balloon through the inflation / contraction control device to inflate or contract the balloon.

[0017] In one optional embodiment, the guide tube is 70 cm in length.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. The mediastinal esophageal bed protective sleeve of this utility model isolates the tubular stomach from the surrounding structures of the posterior mediastinum during the lifting of the tubular stomach by setting a main tube membrane, forming a channel that allows the tubular stomach to easily reach the neck. This reduces resistance during lifting of the tubular stomach and minimizes traction damage. Sufficient neck length is also provided for easy operation, effectively preventing tension in the upper part of the tubular stomach and relaxation near the pylorus in the lower part, thus improving the smoothness of the lifting process. The main tube membrane is designed as a funnel shape with a narrower middle section and widened openings at both ends, providing better adaptability. The narrower middle section reduces the volume occupied within the posterior mediastinal esophageal bed, while the funnel-shaped openings help accommodate different tubular stomach structures, avoiding problems caused by openings that are too tight or too loose. It also provides greater convenience for surgeons during operation; for example, when adjusting the position of the tubular stomach, the wider opening allows for easier manipulation and adjustment without causing excessive pressure, reducing unnecessary tension or excessive compression.

[0020] 2. The mediastinal esophageal bed protective sleeve of this utility model is provided with a guide tube. The balloon is filled with a medium through the expansion and contraction control device connected to the end of the guide tube, so that the balloon expands. When the balloon catheter guides the tubular stomach into the neck, it will expand the esophageal bed channel in advance, reducing the possibility of jamming during the lifting of the tubular stomach. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the mediastinal esophageal bed protective sleeve in Example 1;

[0022] Figure 2 This is a schematic diagram of the main body of the protective sleeve for the mediastinal esophageal bed protective sleeve in Example 1;

[0023] Figure 3 This is a schematic diagram of the guide tube structure of the mediastinal esophageal bed protective sleeve in Example 1;

[0024] Figure 4 This is a partial enlarged view of the guide tube A portion of the mediastinal esophageal bed protective sleeve in Example 1.

[0025] In the figure: 10, protective sleeve body; 11, main tube membrane; 111, first flared opening; 112, second flared opening; 12, first thread; 13, second thread; 20, guide tube; 21, connecting through hole; 22, balloon; 23, expansion and contraction control device. Detailed Implementation

[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0027] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "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 this application 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 application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0030] Example 1:

[0031] Please refer to Figure 1-4 This embodiment provides a protective sleeve for a mediastinal esophageal bed, including a protective sleeve body 10. The protective sleeve body 10 is a cylindrical thin film structure with an overall length of 50cm and a diameter of 5cm. The main tube membrane 11 has a first opening and a second opening at both ends, and a lumen is formed inside that connects the first opening and the second opening. The lumen can allow a tubular stomach to pass through.

[0032] In this embodiment, a first flared mouth 111 is formed at the first opening. The first flared mouth 111 has a narrow end and a wide end. The size of the narrow end of the first flared mouth 111 is the same as the size of the first opening, both being 5cm, so that the narrow end of the first flared mouth 111 is connected to the first opening. The diameter of the wide end of the first flared mouth 111 is 8cm. The transition between the narrow end and the wide end is gentle, similar to a conical transition surface.

[0033] In this embodiment, a second flared mouth 112 is formed at the second opening. The second flared mouth 112 has a narrow end and a wide end. The narrow end of the second flared mouth 112 is arranged in the direction of the second opening. The structure and size of the second flared mouth 112 are the same as those of the first flared mouth 111. The two are symmetrically arranged at opposite ends of the main tube membrane 11.

[0034] Based on the above structure, during use, the main tube membrane 11 is inserted into the esophageal bed in the posterior mediastinum through a surgical guidance system. A traction suture for lifting the tubular stomach is passed through the lumen of the main tube membrane 11 and connected to the suture at the end of the tubular stomach. The traction suture provides power, allowing the end of the tubular stomach to enter through the first funnel 111, pass through the lumen of the main tube membrane 11, and exit through the second funnel 112. Guided by the lumen of the main tube membrane 11, the tubular stomach is easily lifted through the esophageal bed to the neck. The traction suture is then interrupted, the main tube membrane 11 is removed, and finally, the neck anastomosis of the tubular stomach is completed. In this embodiment, the main tube membrane 11 isolates the tubular stomach from the surrounding structures of the posterior mediastinum during the lifting of the tubular stomach, forming a channel that allows the tubular stomach to easily reach the neck. This reduces resistance during lifting and minimizes traction damage to the tubular stomach, while providing sufficient neck length for operation. It effectively avoids tension in the upper part of the tubular stomach and relaxation near the pylorus in the lower part, improving the smoothness of the lifting process. The main tube membrane 11 is designed as a funnel shape with a narrower middle section and wide openings at both ends, providing better adaptability. The narrower middle section reduces the space occupied by the posterior mediastinal esophageal bed, while the funnel-shaped openings help adapt to different tubular stomach structures, avoiding problems caused by openings that are too tight or too loose. It also provides more convenience for doctors during surgery. For example, when adjusting the position of the tubular stomach, the wider openings allow doctors to operate and adjust more easily without causing excessive pressure, reducing unnecessary tension or excessive compression.

[0035] In this embodiment, the protective sleeve body 10 also includes a first thread 12 and a second thread 13; the first thread 12 is disposed at the wide end of the first flared opening 111, and the second thread 13 is disposed at the wide end of the second flared opening 112. By connecting the first thread 12 and the second thread 13 at both ends of the main tube membrane 11, it is convenient to connect the main tube membrane 11 to the surgical guidance system and send it into the posterior mediastinal esophageal bed.

[0036] Furthermore, a first channel is formed on the wide end edge of the first funnel-shaped opening 111, and a first perforation is provided on the first channel; the first thread 12 is threaded through the first channel, and both ends of the first thread 12 extend from the first perforation to the outside of the first channel, with each end of the first thread 12 having a length of approximately 10 cm reserved outside the first channel. By threading the first thread 12 through the edge of the wide end of the first funnel-shaped opening 111, pulling the first thread 12 can cause the first funnel-shaped opening 111 to close, and correspondingly, releasing the first thread 12 can cause the wide end of the first funnel-shaped opening 111 to open, thus facilitating the complete and smooth passage of the first funnel-shaped opening 111 through the posterior mediastinal esophageal bed.

[0037] The connection method between the second wire 13 and the wide end of the second flared mouth 112 is the same as that of the first wire 12, and will not be described again here, as those skilled in the art will understand.

[0038] In this embodiment, both the first thread 12 and the second thread 13 are No. 10 threads, which can provide sufficient connection strength while further reducing the volume of the connection and avoiding jamming caused by the connection structure being too large.

[0039] Preferably, the main tube membrane 11 is made of polyurethane or silicone. Polyurethane is a soft and tough material commonly used in medical devices, with good elasticity and durability, which can help the main tube membrane 11 form a smooth protective barrier around the tubular stomach. Silicone has high biocompatibility, is generally non-irritating to the human body, and can provide a certain degree of softness and comfort.

[0040] The main tube membrane 11 is coated with a biocompatible lubricant on both its surface and interior. The lubricant primarily reduces friction between the main tube membrane 11 and the surrounding tissues of the posterior mediastinum during insertion, lowering the risk of tissue damage, and simultaneously allows the tubular stomach to pass smoothly through the lumen of the main tube membrane 11 and be fixed in the predetermined position. Water-soluble lubricants, medical silicone oil, and glycerin-based lubricants are common and suitable lubricants for this type of surgery.

[0041] Furthermore, it also includes a guide tube 20, the overall length of which in this embodiment is approximately 70cm; the guide tube 20 has a first end and a second end at its two ends, the first end passing through the lumen and the second end extending out of the lumen; a connecting portion is provided on the first end. The connecting portion can be a groove or a connecting through hole 21, facilitating connection with the suture of the tubular gastric stump;

[0042] The first end of the guide tube 20 is provided with a balloon 22, which has an inflated and a contracted state. When inflated, it is spindle-shaped, and when contracted, it adheres to the surface of the guide tube 20. The second end of the guide tube 20 is connected to an expansion and contraction control device 23, which can be implemented using a syringe. The expansion and contraction control device 23 is connected to the balloon 22, and a medium is injected or withdrawn into the balloon 22 through the expansion and contraction control device 23 to inflate or contract the balloon 22. The medium can be a gaseous medium or a liquid medium; in this embodiment, a liquid medium is used. Injecting liquid through the syringe causes the balloon 22 to expand. The expanded balloon catheter will pre-dilate the esophageal bed passage when guiding the tubular stomach into the neck, reducing the possibility of obstruction during the upward movement of the tubular stomach.

[0043] Although certain components and embodiments of this application have been illustrated and described, many modifications and alterations (e.g., variations in the size, dimensions, structure, shape and proportion of the various elements, installation arrangement, material use, color, orientation, etc.) will be conceived by those skilled in the art without actually departing from the scope and spirit of the claims.

[0044] Finally, it should be noted that the above embodiments are only preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A protective sleeve for a mediastinal esophageal bed, characterized in that, The device includes a protective sleeve body, which includes a main tube membrane. The main tube membrane has a first opening and a second opening at both ends, and a lumen is formed inside that connects the first opening and the second opening. The lumen allows a tubular stomach to pass through. A first flared mouth is formed at the first opening, the first flared mouth having a narrow end and a wide end, the narrow end of the first flared mouth being positioned toward the first opening; A second flared mouth is formed at the second opening. The second flared mouth has a narrow end and a wide end, with the narrow end of the second flared mouth facing the direction of the second opening.

2. The mediastinal esophageal bed protective sleeve according to claim 1, characterized in that, The protective sleeve body also includes a first thread and a second thread; the first thread is disposed at the wide end of the first flared opening, and the second thread is disposed at the wide end of the second flared opening.

3. A protective sleeve for a mediastinal esophageal bed according to claim 2, characterized in that, The wide end edge of the first flared mouth forms a first channel, and the first channel has a first perforation; the first thread passes through the first channel, and both ends of the first thread extend from the first perforation to the outside of the first channel.

4. A protective sleeve for a mediastinal esophageal bed according to claim 2, characterized in that, Both the first and second threads are No. 10 threads.

5. A protective sleeve for a mediastinal esophageal bed according to claim 1, characterized in that, The main membrane is a tubular membrane with a length of 50cm and a diameter of 5cm, and the wide end diameters of the first and second flared openings are both 8cm.

6. A protective sleeve for a mediastinal esophageal bed according to claim 1, characterized in that, The main tube membrane is made of polyurethane or silicone material, and the surface of the main tube membrane is coated with a biocompatible lubricant.

7. A protective sleeve for a mediastinal esophageal bed according to claim 1, characterized in that, It also includes a guide tube, with a first end and a second end formed at both ends. The first end passes through the cavity, and the second end extends out of the cavity. A connecting part is provided on the first end.

8. A protective sleeve for a mediastinal esophageal bed according to claim 7, characterized in that, The connecting part is a connecting through hole.

9. A protective sleeve for a mediastinal esophageal bed according to claim 7, characterized in that, The first end of the guide tube is provided with a balloon, and the second end of the guide tube is connected to an expansion and contraction control device. The expansion and contraction control device is connected to the balloon, and the balloon is inflated or deflated by injecting or deleting a medium through the expansion and contraction control device.

10. A protective sleeve for a mediastinal esophageal bed according to claim 7, characterized in that, The guide tube is 70cm long.

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