A soft and hard integrated combination mirror

Abstract

This invention provides a rigid-flexible endoscope, comprising a rigid sheath and an electronic flexible endoscope. The electronic flexible endoscope includes an insertion portion. The rigid sheath includes a locking device and a rigid sheath tube. The locking device is located at the tail end of the rigid sheath tube. The head end of the insertion portion is inserted into the rigid sheath tube from the tail end and extends out from the head end of the rigid sheath tube. The rigid sheath tube locks the insertion portion in place by the locking device. This invention combines a rigid sheath and an electronic flexible endoscope to form a rigid-flexible endoscope. This integrated rigid-flexible endoscope reduces the use of endoscopes and thus the use of endoscopic systems, thereby reducing the complexity and cost of surgical procedures. It is convenient, safe, and quick to use.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a flexible and rigid integrated lens. Background Technology

[0002] Endoscopes have evolved from the initial optical and electronic endoscopes to the safer and more convenient disposable electronic endoscopes of today. The highest replacement rate for reusable endoscopes is in the urology field with disposable ureteroscopes, primarily used for ureteroscopic lithotripsy. Ureteroscopic lithotripsy can be performed through the body's natural passageways without puncture, offering advantages such as minimal trauma, good stone fragmentation, and high stone removal efficiency. Therefore, it is increasingly favored in clinical practice.

[0003] Rigid ureteroscopes are easy to operate, but their inflexible tip prevents them from reaching the renal pelvis through the ureter. Flexible ureteroscopes, while flexible at the tip, cannot be pushed directly from the ureter to the renal pelvis. To allow the flexible ureteroscope to reach the renal pelvis, the procedure involves first inserting a rigid ureteroscope through the ureter, then inserting a guidewire along the working channel of the rigid ureteroscope, followed by inserting a flexible ureteroscope sheath along the guidewire, and finally inserting a disposable flexible ureteroscope through the lumen of the sheath. The disposable flexible ureteroscope can reach as far as the renal pelvis.

[0004] Because rigid and flexible ureteroscopes often do not share an image processor, multiple endoscopic systems need to be used simultaneously, making the procedure more complex and costly. Even if rigid and flexible ureteroscopes could share an image processor, switching between endoscopes still requires convenience.

[0005] Therefore, how to develop a rigid-flexible ureteroscope that combines rigid and flexible ureteroscopes into one unit has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides a rigid-flexible endoscope, comprising a rigid sheath and an electronic flexible endoscope. The electronic flexible endoscope includes an insertion portion. The rigid sheath includes a locking device and a rigid sheath tube. The locking device is disposed at the tail end of the rigid sheath tube. The head end of the insertion portion is inserted into the rigid sheath tube from the tail end and extends out from the head end of the rigid sheath tube. The rigid sheath tube locks the insertion portion by the locking device.

[0007] Optionally, the head end of the rigid sheath is provided with a constriction for tight engagement with the insertion portion.

[0008] Optionally, the outer diameter of the rigid sheath is less than 9.5Fr, and the inner diameter is greater than 8Fr.

[0009] Optionally, the insertion part includes a flexible tube with a rigid head that facilitates insertion into the human body.

[0010] Optionally, the rigid head is obliquely round or bullet-shaped.

[0011] Optionally, the outer diameter of the hose is less than 8 Fr, and the diameter of the working channel of the hose is greater than 3.6 Fr.

[0012] Optionally, the locking device includes a fixed part and a movable part. The fixed part is fixed to the tail of the rigid sheath, and the movable part is connected to the fixed part to lock the insertion part.

[0013] Optionally, the fixing part is a hollow sleeve structure, the head of the fixing part is fixedly sleeved on the tail of the rigid sheath, and the outer side of the tail of the fixing part is provided with external threads; the movable part is a threaded sleeve, the inner side of the threaded sleeve is provided with internal threads adapted to the external threads, the insertion part passes through the threaded sleeve and the fixing part in sequence, and is tightened on the fixing part by the threaded sleeve to clamp the insertion part.

[0014] Optionally, the locking device further includes an elastic locking member, which is sleeved on the insertion part and connected to the fixed part through the movable part to compress the elastic locking member, thereby clamping the insertion part.

[0015] Optionally, the fixing part is a locking valve body structure, the locking valve body structure is a sleeve structure, the inner side of the tail of the sleeve structure is provided with a receiving groove, the inner diameter of the receiving groove is larger than the inner diameter of the head of the sleeve structure, and the elastic locking member is located in the receiving groove; the head of the sleeve structure is fixedly sleeved on the tail of the rigid sheath, the outer side of the tail of the sleeve structure is provided with an external thread, and the outer side of the tail of the sleeve structure is also provided with an annular protrusion, the annular protrusion being located at the head end of the external thread;

[0016] The movable part is a locking valve cap structure, which has a through hole for the insertion part to be inserted; the head of the locking valve cap structure includes an outer wall and an inner wall, the inner wall forming the through hole; the outer wall is spaced out on the outside of the inner wall, the inner side of the outer wall is provided with an internal thread adapted to the external thread, and the inner side of the outer wall is also provided with an annular groove adapted to the annular protrusion, the annular groove being located at the head end of the internal thread;

[0017] During assembly, the tail of the sleeve structure extends between the outer wall and the inner wall of the locking valve cap structure, the annular protrusion is engaged in the annular groove, the inner wall extends into the receiving groove, and the annular protrusion moves axially within the annular groove by tightening the internal thread and the external thread, and the head end of the inner wall compresses the elastic locking member.

[0018] Compared with the prior art, the technical solution of this utility model embodiment has the following beneficial effects:

[0019] This invention combines a rigid sheath and an electronic flexible endoscope to form an integrated rigid-flexible endoscope. This integrated rigid-flexible endoscope reduces the use of endoscopes and, consequently, the use of endoscope systems, thereby reducing the complexity and cost of surgical procedures. It is convenient, safe, and quick to use. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a rigid-soft integrated combined mirror provided in one embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of an electronic flexible endoscope provided in one embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a hard sheath provided in one embodiment of the present invention;

[0024] Figure 4 This is an exploded view of a hard sheath provided in an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the locking device without locking the insertion part according to an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the locking insertion part of the locking device provided in an embodiment of the present invention. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. 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 processes, methods, products, or apparatus. The terms "above" and "over," and any variations thereof, are intended to describe positional relationships and do not imply direct contact between the described objects.

[0029] Please refer to Figures 1 to 6 One embodiment of this utility model provides a rigid-flexible endoscope, including a rigid sheath 2 and an electronic flexible endoscope 1.

[0030] To ensure safety and hygiene and avoid cross-infection, this embodiment preferably uses both the rigid sheath 2 and the electronic flexible endoscope 1 as disposable items.

[0031] The flexible electronic endoscope 1 is a mature technology in this field, therefore, this utility model will not describe it in detail. The flexible electronic endoscope 1 includes an operating part 12 and an insertion part 11 for insertion into the human body, with the operating part 12 located at the tail of the insertion part 11.

[0032] The rigid sheath 2 includes a locking device 22 and a rigid sheath tube 21. The rigid sheath tube 21 is a hollow tubular structure. To ensure its rigidity, the rigid sheath tube 21 is made of a rigid material, such as metal. The locking device 22 is located at the tail of the rigid sheath tube 21.

[0033] In this embodiment, the insertion portion 11 of the flexible electronic endoscope 1 is detachably fixed to the rigid sheath 21 by means of the locking device 22. Specifically, the tip of the insertion portion 11 is inserted into the rigid sheath 21 from the tail end and extends out from the tip of the rigid sheath 21. The rigid sheath 21 locks the insertion portion 11 by means of the locking device 22, forming a flexible-rigid integrated endoscope.

[0034] When the rigid-flex eyepiece is inserted into the human body, in order to prevent the rigid sheath 21 from scratching the human body due to the gap between the tip of the rigid sheath 21 and the insertion part 11, the tip of the rigid sheath 21 is provided with a constriction for tight fit with the insertion part 11. That is, the tip of the rigid sheath 21 is tightly attached to the insertion part 11 through the constriction, so that there is no gap between the tip of the rigid sheath 21 and the insertion part 11.

[0035] This invention does not limit the formation of the opening; it can be bullet-shaped or obliquely cut circular, etc.

[0036] The smaller the outer diameter of the rigid sheath 21, the easier it is to insert into the human body passage. Therefore, it is preferable that the outer diameter of the rigid sheath 21 is less than 9.5 Fr. Similarly, the outer diameter of the insertion portion 11 of the flexible endoscope 1 is less than 8 Fr. In order for the insertion portion 11 of the flexible endoscope 1 to be inserted into the rigid sheath 21, the inner diameter of the insertion portion 11 of the flexible endoscope 1 is greater than 8 Fr.

[0037] The insertion part 11 of the electronic flexible endoscope 1 is also provided with a working channel with a diameter greater than 3.6 Fr, which is intended to facilitate surgical operation.

[0038] In this embodiment, the insertion part 11 of the flexible electronic endoscope 1 includes a flexible tube. Since the flexible tube is not easily inserted into the human body passage, the head of the flexible tube is designed as a rigid head 111 for easy insertion into the human body. The rigid head 111 is made of a hard material, such as metal. When the flexible electronic endoscope 1 is assembled with the rigid sheath 2, the rigid head 111 of the flexible tube extends from the tip of the rigid sheath 21 to a certain length. The length extending from the tip of the rigid sheath 21 is less than the length of the rigid head 111, the purpose being to prevent the flexible tube from extending from the tip of the rigid sheath 21. This embodiment does not specifically limit the length of the rigid head 111; generally, the length of the rigid head 111 extending from the tip of the rigid sheath 21 is required to be 3-6 mm.

[0039] This invention does not limit the shape of the rigid head 111, as long as it is rounded and easy to insert into the human body, such as the rigid head 111 being a beveled circle, bullet shape, or cylindrical shape.

[0040] This invention does not limit the specific structure of the locking device 22, as long as it can lock the electronic flexible endoscope 1 onto the rigid sheath 2 and unlock the electronic flexible endoscope 1 from the rigid sheath 2.

[0041] In one embodiment, the locking device 22 includes a fixed part 221 and a movable part 224. The fixed part 221 is fixed to the tail of the rigid sheath 21, and the movable part 224 is engaged with the fixed part 221 to lock the insertion part 11. The engagement between the movable part 224 and the fixed part 221 can be a threaded fastening connection or / and a snap-fit ​​connection, etc., a detachable connection method.

[0042] In one specific embodiment, the fixing part 221 is a hollow sleeve structure, the head of the fixing part 221 is fixedly sleeved on the tail of the rigid sheath 21, and the outer side of the tail of the fixing part is provided with external threads; the movable part 224 is a threaded sleeve, the inner side of the threaded sleeve is provided with internal threads adapted to the external threads, the insertion part 11 passes through the threaded sleeve and the fixing part 221 in sequence, and is tightened on the fixing part 221 by the threaded sleeve to clamp the insertion part 11.

[0043] In this embodiment, the tail of the fixing part can be an elastic body, or it can have several axially arranged notches on its outer periphery. The purpose is that when the threaded sleeve is tightened on the fixing part 221, the threaded sleeve squeezes the tail of the fixing part 221, making its diameter smaller, thereby clamping the insertion part 11 and locking the insertion part 11.

[0044] In another specific embodiment, the locking device 22 further includes an elastic locking member 222, which is sleeved on the insertion part 11. The movable part 224 is connected to the fixed part 221 to compress the elastic locking member 222, so that the elastic locking member 222 clamps the insertion part 11.

[0045] In this invention, the elastic locking member 222 only needs to be able to deform by compression through the movable part 224 and the fixed part 221 to clamp the insertion part 11.

[0046] In this embodiment, the elastic locking member 222 is a soft rubber ring. In its uncompressed state, there is a gap between the elastic locking member 222 and the insertion part 11, so the insertion part 11 can move axially relative to the rigid sheath 2. When it is pressed by the movable part 224 and the fixed part 221, the elastic locking member 222 deforms to clamp the insertion part 11, so that the insertion part 11 cannot move axially relative to the rigid sheath 2.

[0047] The mating connection between the movable part 224 and the fixed part 221 can be a threaded connection or / and a snap-fit ​​connection, etc.

[0048] Specifically, the fixing part 221 is a locking valve body structure, the locking valve body structure is a sleeve structure, the inner side of the tail 2212 of the sleeve structure is provided with a receiving groove, the inner diameter of the receiving groove is larger than the inner diameter of the head 2211 of the sleeve structure, and the elastic locking member 222 is located in the receiving groove; the head 2211 of the sleeve structure is fixedly sleeved on the tail of the rigid sheath 21, the outer side of the tail 2212 of the sleeve structure is provided with an external thread 22122, and the outer side of the tail 2212 of the sleeve structure is also provided with an annular protrusion 22121, the annular protrusion 22121 is located at the head end of the external thread 22122.

[0049] The movable part 224 is a locking valve cap structure, which has a through hole for the insertion part 11 to be inserted into. The head of the locking valve cap structure includes an outer wall 2241 and an inner wall 2242, with the inner wall 2242 forming the through hole. The outer wall 2241 is spaced out on the outside of the inner wall 2242. The inner side of the outer wall 2241 has an internal thread 22412 that matches the external thread 22122. Furthermore, the inner side of the outer wall 2241 also has an annular groove 22411 that matches the annular protrusion 22121. The annular groove 22411 is located at the head end of the internal thread 22412. The axial length of the annular groove 22411 is greater than the axial length of the annular protrusion 22121, so that when the elastic locking member 222 does not lock the insertion part 11, the annular protrusion 22121 can move axially within the annular groove 22411.

[0050] During assembly, firstly, the tail portion 2212 of the sleeve structure extends between the outer wall 2241 and the inner wall 2242 of the locking valve cap structure. The annular protrusion 22121 engages with the annular groove 22411, and the inner wall 2242 extends into the receiving groove. At this time, the elastic locking member 222 has not yet locked the insertion portion 11, and there is still a gap 22123 between the insertion portion 11 and the inner wall 2242. The insertion portion 11 can also move axially relative to the rigid sheath 2. Then, by tightening the internal thread 22412 and the external thread 22122, the annular protrusion 22121 moves axially within the annular groove 22411, and the head end of the inner wall 2242 compresses the elastic locking member 222, causing the elastic locking member 222 to clamp the insertion portion 11, and the insertion portion 11 can no longer move axially relative to the rigid sheath 2.

[0051] To facilitate the compression of the elastic locking member 222, a spacer 223 is provided between the head end of the inner wall 2242 and the elastic locking member 222. The head end of the inner wall 2242 compresses the elastic locking member 222 through the spacer 223, so that the elastic locking member 222 clamps the insertion part 11.

[0052] In one embodiment of the present invention, the side of the fixing part 221 of the sleeve structure is further provided with a side channel 2213.

[0053] Another embodiment of this utility model provides a method for using a rigid-soft integrated lens, including the following steps:

[0054] S1. Insert the insertion part 11 of the flexible endoscope 1 into the rigid sheath 2, so that the tip of the insertion part 11 extends a certain length from the tip of the rigid sheath 2, and lock the insertion part 11 onto the rigid sheath 2 by the locking device 22 to form the flexible-rigid integrated endoscope.

[0055] S2. Insert the flexible and rigid integrated endoscope into the human body through the ureter;

[0056] S3. Insert a guidewire along the working channel of the electronic flexible endoscope 1;

[0057] S4. Remove the integrated hard and soft mirror;

[0058] S5. Remove the rigid sheath 2 from the integrated rigid-flex endoscope using the locking device 22, and insert the flexible electronic endoscope 1 along the guidewire into the renal pelvis.

[0059] This invention combines a rigid sheath 2 and an electronic flexible endoscope 1 to form a rigid-flexible integrated endoscope. This integrated endoscope reduces the use of endoscopes and thus the use of the endoscope system, thereby reducing the complexity and cost of the procedure and making it convenient, safe, and quick to use.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model 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 therein. Such 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 this utility model.

Claims

1. A rigid-soft integrated lens, characterized in that, The device includes a rigid sheath and an electronic flexible endoscope. The electronic flexible endoscope includes an insertion part. The rigid sheath includes a locking device and a rigid sheath tube. The locking device is disposed at the tail end of the rigid sheath tube. The head end of the insertion part is inserted into the rigid sheath tube from the tail end and extends out from the head end of the rigid sheath tube. The rigid sheath tube locks the insertion part by means of the locking device.

2. The integrated rigid-soft lens according to claim 1, characterized in that, The rigid sheath has a constricted end for tight fitting with the insertion part.

3. The integrated rigid-soft lens according to claim 1, characterized in that, The outer diameter of the rigid sheath is less than 9.5Fr, and the inner diameter is greater than 8Fr.

4. The integrated rigid-soft lens according to claim 1, characterized in that, The insertion part includes a flexible tube, the head of which is a rigid head for easy insertion into the human body.

5. The integrated rigid-soft lens according to claim 4, characterized in that, The rigid head is obliquely cut circular or bullet-shaped.

6. The integrated rigid-soft lens according to claim 4, characterized in that, The outer diameter of the hose is less than 8 Fr, and the diameter of the working channel of the hose is greater than 3.6 Fr.

7. The integrated rigid-soft lens according to claim 1, characterized in that, The locking device includes a fixed part and a movable part. The fixed part is fixed to the tail of the rigid sheath, and the movable part is connected to the fixed part to lock the insertion part.

8. The integrated rigid-soft lens according to claim 7, characterized in that, The fixing part is a hollow sleeve structure. The head of the fixing part is fixedly sleeved on the tail of the rigid sheath. The tail of the fixing part is provided with external threads. The movable part is a threaded sleeve. The inner side of the threaded sleeve is provided with internal threads that are adapted to the external threads. The insertion part passes through the threaded sleeve and the fixing part in sequence. The insertion part is clamped by tightening the threaded sleeve onto the fixing part.

9. The integrated rigid-soft lens according to claim 7, characterized in that, The locking device further includes an elastic locking member, which is sleeved on the insertion part and is connected to the fixed part through the movable part to compress the elastic locking member, so that the elastic locking member clamps the insertion part.

10. The integrated rigid-soft lens according to claim 9, characterized in that, The fixing part is a locking valve body structure, which is a sleeve structure. The inner side of the tail of the sleeve structure is provided with a receiving groove, the inner diameter of which is larger than the inner diameter of the head of the sleeve structure. The elastic locking member is located in the receiving groove. The head of the sleeve structure is fixedly sleeved on the tail of the rigid sheath. The outer side of the tail of the sleeve structure is provided with an external thread, and the outer side of the tail of the sleeve structure is also provided with an annular protrusion, which is located at the head end of the external thread. The movable part is a locking valve cap structure, which has a through hole for the insertion part to be inserted; the head of the locking valve cap structure includes an outer wall and an inner wall, the inner wall forming the through hole; the outer wall is spaced out on the outside of the inner wall, the inner side of the outer wall is provided with an internal thread adapted to the external thread, and the inner side of the outer wall is also provided with an annular groove adapted to the annular protrusion, the annular groove being located at the head end of the internal thread; During assembly, the tail of the sleeve structure extends between the outer wall and the inner wall of the locking valve cap structure, the annular protrusion is engaged in the annular groove, the inner wall extends into the receiving groove, and the annular protrusion moves axially within the annular groove by tightening the internal thread and the external thread, and the head end of the inner wall compresses the elastic locking member.

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