Spherical stent for high posterior mediastinal neurogenic tumor resection

Abstract

The spherical stent comprises a navigation frame, a stent body and a water injection body, the stent body is arranged in the navigation frame, the water injection body is arranged in the stent body, and the water injection body reaches the front inner side of a tumor through the navigation frame and the stent body. The water injection body expands by adding water to the front inner side of the tumor so that the tumor naturally expands. According to the method, the risk of nerve injury is reduced, and for high-position posterior mediastinal neurogenic tumor resection, a traditional operation method has the probability of damaging sympathetic chains or miscarriage, laryngeal recurrence and other nerves of 90% or above, and serious affected side Horner syndromes are caused. According to the spherical stent, a gap is separated from the front inner side of a tumor, a water bag is placed in the gap, water is flushed to expand, so that the tumor naturally expands, energy equipment such as an electrotome, an ultrasonic knife and a bipolar device is not used in the whole process, the risk of injury to peripheral nerves is greatly reduced, the occurrence rate of the postoperative Horner syndrome is reduced to about 15% from 75%-90% in the prior art, and the occurrence rate of the postoperative Horner syndrome is greatly reduced. And better postoperative life quality is brought to patients.

Description

Technical Field

[0001] The invention belongs to the field of medical devices, and in particular relates to a spherical stent used for resection of high-position posterior mediastinal neurogenic tumors. Background Art

[0002] With the continuous development of medical technology, thoracoscopic surgery has been more and more widely used in the treatment of various chest diseases. However, thoracoscopic surgery for high-positioned posterior mediastinal tumors has always been a difficult point in clinical treatment.

[0003] High-positioned posterior mediastinal tumors are located near the apex of the pleura, where important structures such as the vagus nerve, recurrent laryngeal nerve, sympathetic chain nerves, brachial plexus, subclavian artery, and subclavian vein exist. In traditional thoracoscopic surgery, due to the limited surgical field of view, small operating space, and limitations of surgical instruments, even if the tumor is completely removed, there is a more than 90% probability of damaging the sympathetic chain or vagus, recurrent laryngeal nerves, and other nerves. This can cause patients to develop severe Horner syndrome on the affected side in order to remove a benign tumor, which has a great impact on the patient's postoperative life, work, and family, especially for young patients, where this impact is more significant.

[0004] In addition, the nerve fibers of the communicating branches around the sympathetic chain ganglia are extremely thin and almost invisible to the naked eye, and the nerve fibers are very susceptible to electrical or thermal damage. In previous surgical resections, it was difficult to avoid damage to these nerves, mainly because traditional surgeries often use energy devices such as electric knives, ultrasonic knives, and bipolar knives, which are prone to generate heat or current during operation, thereby damaging the surrounding nerve tissue. Summary of the invention

[0005] The purpose of the present invention is to provide a spherical stent for high-position posterior mediastinal neurogenic tumor resection, aiming to solve the problems existing in the background technology. To achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A spherical stent for high-position posterior mediastinal neurogenic tumor resection comprises a navigation frame, a stent body and a water injection body. The navigation frame is provided with the stent body inside, and the stent body is provided with the water injection body inside. The water injection body reaches the anterior medial side of the tumor through the navigation frame and the stent body. The water injection body expands when water is added to the anterior medial side of the tumor to cause the tumor to bulge naturally.

[0007] Preferably, a gap is left between the navigation frame and the bracket body, and the gap enables the bracket body to slide in the navigation frame.

[0008] Preferably, a metal wire is further provided inside the water injection body, and the metal wire is used for positioning and supporting.

[0009] Preferably, the navigation frame comprises a navigation frame body, and a limiter is arranged on the top of the navigation frame body, and the limiter is used to limit the sliding of the bracket body in the navigation frame.

[0010] Preferably, the navigation frame is a square structure.

[0011] Preferably, the water injection body includes a water injection body body, and a metal wire is arranged inside the water injection body. The metal wire expands the water injection body (the area expanded by the metal wire is a fixed value, which is adjusted according to actual application). After the water injection body body is filled with water, the metal wire will not increase with the increase of the water injection body.

[0012] Preferably, the navigation frame, the support body and the water injection body are non-rigid structures.

[0013] Beneficial effects of the present invention:

[0014] Reduce the risk of nerve damage. For high-position posterior mediastinal neurogenic tumor resection, traditional surgical methods have a probability of more than 90% to damage the sympathetic chain or vagus, recurrent laryngeal nerves, etc., leading to severe Horner syndrome on the affected side. The spherical stent of the present invention separates a gap in the anterior and medial side of the tumor, inserts a water bag and expands it with water to make the tumor bulge naturally. The whole process avoids the use of energy devices such as electric knives, ultrasonic knives, and bipolar, greatly reducing the risk of peripheral nerve damage, and reducing the incidence of postoperative Horner syndrome from the traditional 75%-90% to about 15%, bringing patients a better quality of life after surgery;

[0015] The gap design between the navigation frame and the stent body allows the stent body to slide in the navigation frame, making it easier to adjust its position and accurately reach the anterior and medial side of the tumor, further reducing interference with surrounding nerve tissue.

[0016] The stopper on the top of the navigation frame can limit the sliding range of the stent body in the navigation frame, ensuring that the stent functions in the correct position and improving the accuracy of the surgery;

[0017] The metal wire inside the injection body is used for positioning and support, which helps to more accurately place the injection body to the anterior and medial side of the tumor. It also stabilizes the stent structure during surgery and improves the accuracy of surgical operations.

[0018] The navigation frame, stent body and water injection body are non-rigid structures, which can better adapt to the complex anatomical structure of the surgical site, reduce mechanical damage to surrounding tissues, and improve the safety of surgery;

[0019] The spherical stent of the present invention is suitable for the resection of various high-position posterior mediastinal neurogenic tumors, and is particularly important for young patients and other groups who have high requirements for postoperative quality of life. Its unique design can achieve complete resection of the tumor while protecting the nerves, providing patients with a safer and more effective surgical treatment option. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 An overall schematic diagram provided for an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the overall front structure provided by an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the navigation frame structure provided by an embodiment of the present invention;

[0023] Figure 4 It is a schematic diagram of the overall cross-sectional structure of an embodiment of the present invention;

[0024] Figure 5 It is a schematic diagram of a top view cross-sectional structure of a water injection body according to an embodiment of the present invention;

[0025] Among them, the reference numerals in the figure are:

[0026] 1. Navigation frame; 11. Navigation frame body; 12. Limiter; 2. Bracket body; 3. Water injection body; 31. Water injection body body; 4. Metal wire. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centered element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method. The terms "upper end", "lower end", "left side", "right side", "front end", "rear end" and similar expressions used herein are positional relationships with reference to the accompanying drawings.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0031] like Figures 1 to 5 As shown, an embodiment of the present invention provides a spherical stent for high-position posterior mediastinal neurogenic tumor resection, comprising a navigation frame 1, a stent body 2 and a water injection body 3. The navigation frame 1 is provided with the stent body 2 inside, and the stent body 2 is provided with the water injection body 3 inside. The water injection body 3 reaches the anterior medial side of the tumor through the navigation frame 1 and the stent body 2. The water injection body 3 is expanded by adding water on the anterior medial side of the tumor to cause the tumor to bulge naturally.

[0032] In the embodiment, a gap is left between the navigation frame 1 and the bracket body 2 , and the gap enables the bracket body 2 to slide in the navigation frame 1 .

[0033] In the embodiment, a metal wire 4 is further provided inside the water injection body 3, and the metal wire 4 is used for positioning and supporting.

[0034] In the embodiment, the navigation frame 1 includes a navigation frame body 11 , and a limiter 12 is disposed on the top of the navigation frame body 11 . The limiter 12 is used to limit the sliding of the bracket body 2 in the navigation frame 1 .

[0035] In the embodiment, the navigation frame 1 is a square structure.

[0036] In the embodiment, the water injection body 3 includes a water injection body main body 31, and a metal wire 4 is arranged inside the water injection body main body 31. The metal wire 4 expands the water injection body (the area expanded by the metal wire is a fixed value, which is adjusted according to the actual application). After the water injection body main body 31 is injected with water, the metal wire 4 will not increase as the water injection body increases.

[0037] In the embodiment, the navigation frame 1, the support body 2 and the water injection body 3 are non-rigid structures.

[0038] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention should be defined by the claims.

Claims

1. A spherical stent for high posterior mediastinal neurogenic tumor resection, characterized in that: It includes a navigation frame, a support body and a water injection body. The support body is arranged inside the navigation frame, and the water injection body is arranged inside the support body. The water injection body reaches the front inner side of the tumor through the navigation frame and the support body. The water injection body expands when water is added to the front inner side of the tumor to make the tumor bulge naturally.

2. A spherical stent for high posterior mediastinal neurogenic tumor resection according to claim 1, characterized in that: A gap is left between the navigation frame and the bracket body, and the gap enables the bracket body to slide in the navigation frame.

3. A spherical stent for high posterior mediastinal neurogenic tumor resection according to claim 1, characterized in that: A metal wire is also arranged inside the water injection body, and the metal wire is used for positioning and supporting.

4. A spherical stent for high posterior mediastinal neurogenic tumor resection according to claim 1, characterized in that: The navigation frame comprises a navigation frame body. A limiter is arranged on the top of the navigation frame body. The limiter is used to limit the sliding of the bracket body in the navigation frame.

5. A spherical stent for high posterior mediastinal neurogenic tumor resection according to claim 4, characterized in that: The navigation frame is a square structure.

6. A spherical stent for high posterior mediastinal neurogenic tumor resection according to claim 1, characterized in that: The water injection body comprises a water injection body body, and a metal wire is arranged inside the water injection body body. The metal wire expands the water injection body, and the metal wire will not increase with the increase of the water injection body body after the water injection body body is filled with water.

7. A spherical stent for high posterior mediastinal neurogenic tumor resection according to claim 1, characterized in that: The navigation frame, the support body and the water injection body are non-rigid structures.

Images