A foreign body recovery device for the digestive system and a combined medical device system

Abstract

This invention relates to the field of medical technology, and in particular to a foreign body retrieval device for the digestive system and a combined medical device system. The foreign body retrieval device for the digestive system provided by this invention includes: a first outer tube and a second outer tube, the first outer tube being connected to the second outer tube for inserting a first medical device and a second medical device; the inner diameter of the end of the second outer tube closer to the first outer tube is smaller than the inner diameter of the end farther from the first outer tube, and the inner diameter of the first outer tube is the same as the inner diameter of the end of the second outer tube closer to the first outer tube. Foreign bodies can easily enter the second outer tube, and once inside, the tube can be pulled tighter, making it less likely to fall out and facilitating removal, thereby increasing the success rate of the surgery, reducing the surgery time and patient discomfort. The inner diameter of the first outer tube is the same as the inner diameter of the rear end of the second outer tube, allowing the outer diameter of the first outer tube to be smaller, reducing the feeling of a foreign body in the digestive system and facilitating entry and exit from the digestive system.

Description

Technical Field

[0001] This invention relates to the field of medical technology, and in particular to a foreign body recovery device for the digestive system and a combined medical device system. Background Technology

[0002] Swallowing foreign objects into the digestive system is a common emergency in internal medicine. If a foreign object enters the digestive system and is not removed in time, it may cause life-threatening situations. In addition, stent implantation is a common treatment for digestive system diseases, and there are also risks associated with stents being implanted in the digestive system for a long time without timely removal.

[0003] When faced with swallowed foreign objects of unknown geometric shape or implanted stents in the digestive system, the procedure usually involves using small forceps with the aid of an endoscope to grasp the object or stent before removing it through the upper digestive tract. However, when the object or stent is grasped and passed through the upper digestive tract, contact between the object or stent and the tract can cause scratches, perforation, or obstruction, resulting in secondary injury to the patient. Furthermore, this contact can also cause the object or stent to dislodge, thus prolonging the operation time and increasing the patient's suffering.

[0004] To address these issues, current techniques typically involve inserting a catheter over an endoscope and small forceps to clamp and remove foreign objects or stents, preventing contact between the foreign object or stent and the upper gastrointestinal tract, thus avoiding damage. However, in practice, the unpredictable geometry of foreign objects and the barbs on stents make it difficult for them to enter the catheter, sometimes even becoming stuck at the catheter's end. This makes removal difficult, prolonging the procedure and causing significant patient discomfort. Summary of the Invention

[0005] The purpose of this invention is to provide a foreign body recovery device and combined medical device system for the digestive system, so as to solve the technical problem that foreign bodies or stents are not easy to remove, thereby prolonging the operation time and causing great pain to the patient.

[0006] The present invention provides a foreign body recovery device for the digestive system, comprising: a first outer tube and a second outer tube, wherein the first outer tube and the second outer tube are connected for inserting a first medical device and a second medical device;

[0007] The inner diameter of the second outer tube at the end closest to the first outer tube is smaller than the inner diameter at the end furthest from the first outer tube, and the inner diameter of the first outer tube is the same as the inner diameter of the second outer tube at the end closest to the first outer tube.

[0008] As a further technical solution, the digestive system foreign body recovery device also includes a third outer sleeve, which is connected to the second outer sleeve;

[0009] The inner diameter of the third outer sleeve at the end closer to the second outer sleeve is smaller than the inner diameter of the other end farther from the second outer sleeve;

[0010] The third outer tube is elastic and has a lower hardness than the second outer tube, so that the end of the third outer tube away from the second outer tube can be folded and embedded inside the second outer tube.

[0011] As a further technical solution, an installation groove is provided on the outer wall of the second outer sleeve, and the installation groove is located at one end of the second outer sleeve near the third outer sleeve;

[0012] The third outer sleeve is interference-fitted with the mounting groove, and the outer wall of the third outer sleeve is flush with the outer wall of the second outer sleeve.

[0013] As a further technical solution, the inner diameter of the third outer tube gradually increases from the end closer to the second outer tube to the end farther away from the second outer tube.

[0014] As a further technical solution, the third outer sleeve is injection molded from a medical polymer material;

[0015] The medical polymer materials are silicone, TPU, PVC, fluorosilicone rubber, EPDM, EPR, EMA, EVA, TPV, SBC, and LDPE.

[0016] As a further technical solution, the side wall of the first outer tube is provided with a through hole for inserting the third medical device.

[0017] As a further technical solution, the through hole is located at the end of the first outer sleeve away from the second outer sleeve.

[0018] As a further technical solution, the digestive system foreign body recovery device also includes a handle, which is connected to the first outer tube.

[0019] As a further technical solution, the handle includes a fourth outer tube and a finger ring, wherein the fourth outer tube is connected to the end of the first outer tube away from the second outer tube;

[0020] The ring is connected to the outer wall of the fourth outer sleeve.

[0021] As a further technical solution, the inner diameter of the second outer tube gradually increases from the end closer to the first outer tube to the end farther away from the first outer tube.

[0022] The present invention provides a combined medical device system, comprising a first medical device, a second medical device, and the aforementioned foreign body recovery device for the digestive system.

[0023] Compared with existing technologies, the technical advantages of the foreign matter recovery device for the digestive system provided by this invention are as follows:

[0024] The digestive system foreign body recovery device provided by the present invention includes: a first outer tube and a second outer tube, the first outer tube and the second outer tube being connected for inserting a first medical device and a second medical device; the inner diameter of the end of the second outer tube closer to the first outer tube is smaller than the inner diameter of the other end farther from the first outer tube, and the inner diameter of the first outer tube is the same as the inner diameter of the end of the second outer tube closer to the first outer tube.

[0025] After the first and second outer sheaths are inserted into the digestive system, with the second outer sheath at the front, the first and second medical instruments are inserted through the first and second outer sheaths, entering the digestive system to contact the foreign object. They then work together to clamp the foreign object into the second outer sheath, thus removing it and preventing further contact with the digestive system, avoiding damage. Because the second outer sheath has a larger inner diameter at the front and a smaller inner diameter at the rear, the foreign object can easily enter, and once inside, it can be pulled tighter, making it less likely to fall out and facilitating removal. This increases the success rate of the surgery, reduces surgical time, and minimizes patient discomfort. The inner diameter of the first and second outer sheaths is the same at the rear, allowing for a smaller outer diameter of the first outer sheath. During the procedure, this reduces the sensation of a foreign object in the digestive system and facilitates the entry and exit of the first and second outer sheaths.

[0026] The combined medical device system provided by the present invention includes a first medical device, a second medical device, and the aforementioned foreign body recovery device for the digestive system. Therefore, the technical advantages and effects achieved therein include those achieved by the aforementioned foreign body recovery device for the digestive system, which will not be elaborated here.

[0027] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the foreign body recovery device for the digestive system provided in this embodiment of the invention when the third outer sleeve is not installed;

[0030] Figure 2A schematic diagram of the structure of the foreign body recovery device for the digestive system provided in an embodiment of the present invention when the third outer sleeve is installed and deployed;

[0031] Figure 3 This is a schematic diagram of the structure of the foreign body recovery device for the digestive system provided in the embodiment of the present invention when the third outer sleeve is installed and folded inside the second outer sleeve.

[0032] Icons: 1-First outer tube; 2-Second outer tube; 3-Third outer tube; 4-Through hole; 5-Fourth outer tube; 6-Ring. Detailed Implementation

[0033] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, 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. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection 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 invention based on the specific circumstances.

[0036] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0037] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0038] The specific structure is as follows: Figures 1-3 As shown.

[0039] This embodiment provides a foreign body recovery device for the digestive system, including: a first outer tube 1 and a second outer tube 2, wherein the first outer tube 1 and the second outer tube 2 are connected for inserting a first medical device and a second medical device;

[0040] The inner diameter of the end of the second outer tube 2 closest to the first outer tube 1 is smaller than the inner diameter of the other end furthest from the first outer tube 1, and the inner diameter of the first outer tube 1 is the same as the inner diameter of the end of the second outer tube 2 closest to the first outer tube 1.

[0041] In this embodiment, the digestive system includes the esophagus, bile duct, pancreatic lumen, and duodenum, etc. That is, the digestive system foreign body recovery device is used to recover foreign bodies in the esophagus, bile duct, pancreatic lumen, and duodenum of the digestive system, as well as implanted stents and other instruments.

[0042] The first medical device can be an endoscope. The second medical device, depending on the shape and size of the foreign body or stent, can be a foreign body forceps, snare, or basket, etc. Both the first outer sheath 1 and the second outer sheath 2 are made of medical-grade flexible materials. The first outer sheath 1 and the second outer sheath 2 can be connected as two independent components, which can be separated when not in use and reconnected when needed, so that the first outer sheath 1 and the second outer sheath 2 do not occupy too much space when stored, making them convenient to store. The first outer sheath 1 and the second outer sheath 2 are precision integrally molded by injection molding or extrusion, which makes it easy to control their shape and size, and provides good integrity and high structural strength. They can also be integrally molded using laser seamless welding, which provides even higher precision. Alternatively, they can be connected using UV-cured adhesive, which is convenient and stable. Or, the front outer wall of the first outer sheath 1 and the rear inner wall of the second outer sheath 2 can be provided with matching snap-fit ​​structures, so that the first outer sheath 1 and the second outer sheath 2 can be snapped together, and the inner and outer walls of the first outer sheath 1 and the second outer sheath 2 are flush.

[0043] In this embodiment, the first outer tube 1 and the second outer tube 2 are preferably integrally formed, with an inner diameter of 13mm-19mm and an outer diameter of 14mm-20mm. This does not affect the insertion of the first medical device and the second medical device into the first outer tube 1 and the second outer tube 2, while facilitating entry into the digestive system and minimizing the foreign body sensation and pain for the patient.

[0044] After the first outer cannula 1 and the second outer cannula 2 are inserted into the digestive system, with the second outer cannula 2 at the front, the first and second medical instruments are inserted through the first outer cannula 1 and pass through the second outer cannula 2, thus entering the digestive system to contact the foreign object. They work together to clamp the foreign object into the second outer cannula 2, thereby removing the foreign object and preventing contact with the digestive system, thus avoiding damage. Because the inner diameter of the front end of the second outer cannula 2 is larger than that of the rear end, the foreign object can easily enter the second outer cannula 2, and once inside, it can be pulled tighter, making it less likely to fall out, facilitating removal and increasing the success rate of the surgery. This reduces surgical time and patient discomfort, and also avoids complications such as obstruction, digestive system mucosal damage, bleeding, and perforation caused by the foreign object. The inner diameter of the first outer cannula 1 is the same as the rear inner diameter of the second outer cannula 2, allowing for a smaller outer diameter of the first outer cannula 1. During the surgery, this reduces the feeling of a foreign object in the digestive system and facilitates the entry and exit of the first and second outer cannsulas 1 and 2 into and out of the digestive system.

[0045] In the optional technical solution of this embodiment, the digestive system foreign body recovery device further includes a third outer sleeve 3, which is connected to the second outer sleeve 2;

[0046] The inner diameter of the end of the third outer sleeve 3 closest to the second outer sleeve 2 is smaller than the inner diameter of the other end furthest from the second outer sleeve 2;

[0047] The third outer sleeve 3 is elastic and has a lower hardness than the second outer sleeve 2, so that the end of the third outer sleeve 3 away from the second outer sleeve 2 can be folded and embedded inside the second outer sleeve 2.

[0048] In this embodiment, the third outer sheath 3 includes a first port and a second port. The third outer sheath 3 is injection molded from a medical polymer material, such as silicone, TPU, PVC, fluorosilicone rubber, EPDM, EPR, EMA, EVA, TPV, SBC, and LDPE. This gives the third outer sheath 3 super elasticity, and the first port can tightly fit onto the end of the second sheath furthest from the first sheath, making installation convenient, quick, and preventing slippage. Its flexibility allows it to adapt to the bending of the endoscope during use, and it can be folded and embedded in the second outer sheath without being punctured by foreign objects or stents, thus possessing a certain degree of reliability.

[0049] In this embodiment, the hardness of the third outer sleeve 3 is less than that of the first outer sleeve 1 and the second outer sleeve 2. When using the third outer sleeve 3, the first port of the third outer sleeve 3 is fitted onto the second sleeve, and the second port is folded inward and embedded inside the second sleeve, so that the third outer sleeve 3 is folded inside the second outer sleeve 2. At this time, the first outer sleeve 1 and the second outer sleeve 2 are inserted into the digestive system. After insertion, the endoscope is inserted into the first outer sleeve 1 and the second outer sleeve 2, and the second port of the third outer sleeve 3 is pushed out of the second outer sleeve 2 and unfolded through the endoscope for the retrieval of foreign objects. When retrieving foreign objects through the second port of the third outer sleeve 3, because the inner diameter of the second port of the third outer sleeve 3 is larger than the inner diameter of the first port, and the first port is fitted onto the second outer sleeve 2, that is, the inner diameter of the second port is larger, the retrieval of foreign objects is more convenient and faster. Moreover, after the foreign object enters the second port, it can be pulled tighter and tighter, making it less likely to fall off, increasing the success rate of the operation and reducing the operation time.

[0050] It should be noted that the third outer sleeve 3 can be used to determine whether to use it based on the size and shape of the foreign object, which improves the overall flexibility and makes it more widely applicable.

[0051] In the optional technical solution of this embodiment, an installation groove is provided on the outer wall of the second outer sleeve 2, and the installation groove is located at one end of the second outer sleeve 2 near the third outer sleeve 3;

[0052] The third outer sleeve 3 is interference-fitted with the mounting groove, and the outer wall of the third outer sleeve 3 is flush with the outer wall of the second outer sleeve 2.

[0053] In this embodiment, the front end of the second outer sleeve 2 has an installation groove on its outer wall. The installation groove is annular, and the first end of the second outer sleeve 2 is fitted onto the installation groove. Due to the superelasticity of the second outer sleeve 2, the first end and the installation groove are interference-fitted to achieve fixation. Thus, installation and disassembly are convenient, and the fixation is stable and not easy to fall off. At the same time, the outer walls of the first outer sleeve 1, the second outer sleeve 2, and the third outer sleeve 3 are flush, and the inner walls are also flush, resulting in good overall integrity. This facilitates the entry and exit of the first outer sleeve 1, the second outer sleeve 2, and the third outer sleeve 3 into and out of the digestive system, avoiding damage to the digestive system. In addition, the insertion of the first and second medical devices is smooth, avoiding jamming, improving the efficiency of the operation during surgery, and reducing the operation time.

[0054] In the optional technical solution of this embodiment, the inner diameter of the third outer tube 3 gradually increases from the end closer to the second outer tube 2 to the end farther away from the second outer tube 2.

[0055] In this embodiment, the third outer sleeve 3 is funnel-shaped, and the funnel opening is the second port. This shape makes it easy for foreign objects to be stored in the second port, avoiding scratching the cavities of the digestive system.

[0056] In the optional technical solution of this embodiment, the side wall of the first outer sleeve 1 is provided with a through hole 4 for inserting a third medical device. The through hole 4 allows the endoscope to enter the third device during operation to assist in the surgery quickly and smoothly, jointly completing the retrieval of foreign objects or stents, improving efficiency, reducing operation time, and expanding the scope of application.

[0057] In this embodiment, the through hole 4 is circular with a diameter of 13mm-19mm, which can not only meet the insertion of the third medical device, but also prevent contaminants from entering the through hole 4.

[0058] Specifically, the through hole 4 is located at the end of the first outer tube 1 away from the second outer tube 2. That is, the through hole 4 is close to the rear end of the first outer tube 1, which facilitates the insertion of the third medical device, and at the same time facilitates the operation of the first and second medical devices inserted into the rear end port of the first outer tube 1.

[0059] The shape of the through hole 4 is not limited to a circle, nor is it limited to the above-mentioned size. It can be adjusted according to the shape of the third medical device.

[0060] In this embodiment, the addition of a third medical device can make the digestive system foreign body recovery device a new medical device, enabling more clinical applications. This medical device can be a passive device or an active device.

[0061] In the optional technical solution of this embodiment, the digestive system foreign body recovery device further includes a handle, which is connected to the first outer sleeve 1. During use, the handle is grasped by hand to prevent slippage and facilitate surgical procedures.

[0062] Specifically, the handle includes a fourth outer tube 5 and a ring 6. The fourth outer tube 5 is connected to the end of the first outer tube 1 away from the second outer tube 2, and the ring 6 is connected to the outer wall of the fourth outer tube 5. The inner wall of the fourth outer tube 5 is flush with the inner wall of the first outer tube 1. The ring 6 is located on the outer wall of the fourth outer tube 5 and is aligned with the first outer tube 1. During surgical procedures, the thumb and forefinger can insert into the ring 6 and pinch it, allowing for smooth forward and backward movement of the entire device. The structure is simple, maintains good overall stability during surgical procedures, improves the success rate of surgery, and reduces surgical time.

[0063] In the optional technical solution of this embodiment, the inner diameter of the second outer sleeve 2 gradually increases from the end closer to the first outer sleeve 1 to the end farther away from the first outer sleeve 1. The second outer sleeve 2 is trumpet-shaped, which facilitates the containment of foreign objects inside the second outer sleeve 2 and avoids scratching the cavities of the digestive system.

[0064] After the third outer sleeve 3 is installed, the inner and outer walls of the first port of the third outer sleeve 3 are flush with the inner and outer walls of the front end of the second outer sleeve 2, and the diameter of the flared mouth of the third outer sleeve 3 is larger than the diameter of the flared mouth of the second outer sleeve 2.

[0065] This embodiment provides a combined medical device system, including a first medical device, a second medical device, and the aforementioned foreign body recovery device for the digestive system. Therefore, the technical advantages and effects achieved by this combined medical device system include the technical advantages and effects achieved by the aforementioned foreign body recovery device for the digestive system, which will not be elaborated here.

[0066] In this embodiment, the side wall of the first outer sleeve 1 has a through hole 4. The combined medical device system also includes a third medical device, which may include a grasping forceps, biopsy forceps, foreign body forceps, hemostatic forceps, or an electrosurgical unit. Different types of third medical devices can be used to perform different operations during surgery, thereby improving the success rate of the surgery and reducing the operation time.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A foreign matter recovery device for the digestive system, characterized in that, include: A first outer tube (1) and a second outer tube (2), wherein the first outer tube (1) and the second outer tube (2) are connected for inserting a first medical device and a second medical device; The inner diameter of the end of the second outer tube (2) closer to the first outer tube (1) is smaller than the inner diameter of the other end farther from the first outer tube (1), and the inner diameter of the first outer tube (1) is the same as the inner diameter of the end of the second outer tube (2) closer to the first outer tube (1); The digestive system foreign body recovery device also includes a third outer tube (3), which is connected to the second outer tube (2); The inner diameter of the end of the third outer tube (3) closer to the second outer tube (2) is smaller than the inner diameter of the other end farther from the second outer tube (2); The third outer tube (3) is detachably connected to the second outer tube (2). The third outer tube (3) is elastic and has a hardness less than that of the second outer tube (2), so that the end of the third outer tube (3) away from the second outer tube (2) can be folded and embedded in the second outer tube (2). The inner diameter of the third outer tube (3) gradually increases from the end closer to the second outer tube (2) to the end farther away from the second outer tube (2).

2. The foreign matter recovery device for the digestive system according to claim 1, characterized in that, An installation groove is provided on the outer wall of the second outer tube (2), and the installation groove is located at one end of the second outer tube (2) near the third outer tube (3); The third outer sleeve (3) is interference-fitted with the mounting groove, and the outer wall of the third outer sleeve (3) is flush with the outer wall of the second outer sleeve (2).

3. The foreign matter recovery device for the digestive system according to claim 1, characterized in that, The third outer sleeve (3) is injection molded from medical polymer material; The medical polymer material is silicone, TPU, PVC, fluorosilicone rubber, EPDM, EPR, EMA, EVA, TPV, SBC, or LDPE.

4. The foreign matter recovery device for the digestive system according to claim 1, characterized in that, The side wall of the first outer tube (1) is provided with a through hole (4) for inserting a third medical device.

5. The foreign body recovery device for the digestive system according to claim 4, characterized in that, The through hole (4) is located at the end of the first outer tube (1) away from the second outer tube (2).

6. The digestive system foreign body recovery device according to any one of claims 1-5, characterized in that, The digestive system foreign body recovery device also includes a handle, which is connected to the first outer tube (1).

7. The foreign matter recovery device for the digestive system according to claim 6, characterized in that, The handle includes a fourth outer tube (5) and a finger ring (6), wherein the fourth outer tube (5) is connected to the end of the first outer tube (1) away from the second outer tube (2); The ring (6) is connected to the outer wall of the fourth outer sleeve (5).

8. The digestive system foreign body recovery device according to any one of claims 1-5, characterized in that, The inner diameter of the second outer tube (2) gradually increases from the end closer to the first outer tube (1) to the end farther away from the first outer tube (1).

9. A combined medical device system, characterized in that, It includes a first medical device, a second medical device, a third medical device, and a foreign body recovery device for the digestive system as described in claim 4 or 5.

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