Angle lock and endoscope

Abstract

The embodiment of the utility model provides an angle lock and an endoscope, and relates to the field of endoscopes. The angle lock comprises a rotating shaft, a shaft holding piece and a locking piece, wherein the rotating shaft is connected with an adjusting mechanism for adjusting the angle of an endoscope lens; the shaft sticking piece comprises an elastic part and a fixed part, the elastic part is connected to the fixed part, and the fixed part sleeves the rotating shaft; the locking piece is arranged on the rotating shaft in a sleeving mode and used for moving in the axial direction of the rotating shaft so as to abut against the elastic part, and the rotating shaft is locked after the elastic part deforms. The angle lock is simple in structure, convenient to operate, large in locking force and capable of reliably and stably fixing the endoscope lens. The embodiment of the utility model further provides the endoscope which comprises the angle lock.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of endoscopes, in particular to an angle lock and endoscope. BACKGROUND

[0002] There are many complex cavity structures in the living body, such as gastrointestinal tract, respiratory tract, urinary system, etc. These cavity structures often have multiple bends and branches. When a doctor performs an examination by operating an endoscope, the doctor needs to adjust the lens of the endoscope to a specific angle to observe the lesion site. When the lesion site is examined, the lens of the endoscope needs to be fixed so that the doctor can carefully observe the target area and avoid missing the details of the lesion due to accidental rotation of the endoscope.

[0003] The commonly used lens fixing device of the endoscope is an angle lock. The angle lock can ensure that the position of the surgical instrument in the field of view of the endoscope is relatively stable, which facilitates the doctor to accurately operate the surgical instrument and improves the success rate and safety of the surgery. However, the existing angle lock has a complex structure and small locking force, and the lens of the endoscope is not fixed stably. SUMMARY

[0004] The utility model provides a kind of angle lock and endoscope, structure is simple, locking force is big, the stability of lens fixed is higher.

[0005] Embodiments of the utility model can be implemented as follows:

[0006] An embodiment of the utility model provides an angle lock, which includes:

[0007] A rotating shaft is used to connect with an adjusting mechanism for adjusting the angle of the lens of the endoscope.

[0008] A shaft holding member includes an elastic portion and a fixed portion. The elastic portion is connected to the fixed portion, and the fixed portion is sleeved on the rotating shaft.

[0009] A locking member is sleeved on the rotating shaft. The locking member is used to move along the axial direction of the rotating shaft to abut against the elastic portion, so that the elastic portion is deformed to lock the rotating shaft.

[0010] Optionally, the elastic portion is provided with a tapered surface or an inclined surface. The locking member is provided with a tapered opening at one end close to the tapered surface or the inclined surface. The tapered opening is used to connect with the tapered surface or the inclined surface.

[0011] Optionally, the angle lock further includes a fixed disc. The fixed disc is connected with the locking member, and the locking member can move relative to the fixed disc.

[0012] Optionally, the fixed disc is provided with a through hole. An inner side wall of the through hole is provided with an internal thread.

[0013] The locking member is a locking nut, the locking nut is sleeved on the outer peripheral wall of the rotating shaft, the outer wall of the locking nut is provided with external threads, the external threads are matched with the internal threads, and the locking member is threadedly connected with the fixing disc.

[0014] Optionally, the through hole is a stepped hole, the stepped hole comprises a small hole and a large hole, the internal threads are arranged on the inner side wall of the small hole, and the fixing part of the shaft holding member is mounted on the large hole.

[0015] Optionally, the elastic part is an arc-shaped block and a plurality of arc-shaped blocks are arranged, the plurality of arc-shaped blocks are spaced from each other and arranged in a circumferential direction around the rotating shaft, one end of the arc-shaped block is a tapered surface, and the other end is connected with the fixing part.

[0016] Optionally, the rotating shaft is connected with a hub and a handle at two ends thereof, the hub is located at one end close to the shaft holding member, and a gap is arranged between the hub and the fixing disc, and the handle is located at the other end away from the shaft holding member.

[0017] Optionally, the locking member is provided with an anti-skid pattern.

[0018] Optionally, the rotating shaft is provided with a pin hole, the hub is provided with a connecting hole corresponding to the pin hole, and a bolt is inserted into the connecting hole and the pin hole.

[0019] The embodiment of the utility model also provides an endoscope, which comprises the angle lock.

[0020] The embodiment of the utility model has the advantages of:

[0021] The angle lock comprises a rotating shaft, a shaft holding member and a locking member, the rotating shaft is connected with an adjusting mechanism for adjusting the angle of an endoscope lens, the shaft holding member comprises an elastic part and a fixing part, the elastic part is connected to the fixing part, and the fixing part is sleeved on the rotating shaft, the locking member is sleeved on the rotating shaft, the locking member is used for moving along the axial direction of the rotating shaft to abut against the elastic part, so that the elastic part is deformed to lock the rotating shaft, the angle lock has simple structure, convenient operation and large locking force, and can reliably and stably fix the endoscope lens.

[0022] The endoscope comprises the angle lock, and has all the functions of the angle lock. DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can be obtained without creative labor on the premise.

[0024] Figure 1 It is a first perspective view of the angle lock structure provided in the embodiment of the utility model;

[0025] Figure 2 Figure 2 is a second perspective view of the angle lock structure according to an embodiment of the present application;

[0026] Figure 3 Figure 3 is an axial sectional view of the angle lock according to an embodiment of the present application;

[0027] Figure 4 Figure 4 is a structural view of the rotating shaft according to an embodiment of the present application;

[0028] Figure 5 Figure 5 is a first perspective view of the hub structure according to an embodiment of the present application;

[0029] Figure 6 Figure 6 is a second perspective view of the hub structure according to an embodiment of the present application;

[0030] Figure 7 Figure 7 is a structural view of the fixed disc according to an embodiment of the present application;

[0031] Figure 8 Figure 8 is a structural view of the locking member according to an embodiment of the present application;

[0032] Figure 9 Figure 9 is an axial sectional view of the locking member according to an embodiment of the present application;

[0033] Figure 10 Figure 10 is a structural view of the shaft holding member according to an embodiment of the present application.

[0034] Figure 1 is a structural view of the angle lock according to an embodiment of the present application; Figure 2 is a second perspective view of the angle lock structure according to an embodiment of the present application; Figure 3 is an axial sectional view of the angle lock according to an embodiment of the present application; Figure 4 is a structural view of the rotating shaft according to an embodiment of the present application; Figure 5 is a first perspective view of the hub structure according to an embodiment of the present application; Figure 6 is a second perspective view of the hub structure according to an embodiment of the present application; Figure 7 is a structural view of the fixed disc according to an embodiment of the present application; Figure 8 is a structural view of the locking member according to an embodiment of the present application; Figure 9 is an axial sectional view of the locking member according to an embodiment of the present application; Figure 10 is a structural view of the shaft holding member according to an embodiment of the present application. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the application.

[0037] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0038] In the description of the application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the product of the application when it is usually placed, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the application.

[0039] In addition, if the terms "first", "second" and the like are used only to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] The terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitation, the element defined by the sentence "including a…" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0041] Unless otherwise specified and limited, the terms "provide", "connect" and the like should be broadly understood, for example, "connect" can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0042] It should be noted that the features in the embodiments of the application can be combined with each other without conflict.

[0043] As described in the background, doctors need to use angle locks when observing complex body cavity channels using endoscopes. For example, in a colonoscopy, the intestinal tract has multiple folds and bends. When a suspicious polyp is found, using an angle lock to fix the angle of the endoscope helps to more clearly view the shape, size, and other characteristics of the polyp. Or in some endoscopic surgeries, such as polyp resection under an endoscope, hemostasis, and other operations, a stable field of view is needed. For example, when performing a sinus surgery using an endoscope, a stable angle allows the doctor to accurately operate the instrument to remove diseased tissue while avoiding damage to the surrounding normal structures.

[0044] As can be seen, an endoscope lens with high stability not only helps endoscopic examination, but also affects the success rate of surgery. The inventors found that the existing angle lock has a complex structure and is difficult to operate. On the other hand, when locked, an axial pressure is usually applied to lock, resulting in small locking force and low reliability of fixing the endoscope lens, which can easily cause the lens to shake.

[0045] Based on the above problems, an angle lock and an endoscope are provided in an embodiment of the present application. The angle lock fixes the endoscope lens by applying a radial pressure, has a large locking force, is highly reliable, and does not cause the endoscope lens to shake. At the same time, the structure is simple, and the operation is simple when used. Next, it will be described in detail.

[0046] Please refer to Figures 1 to 3 and combine Figure 10 The angle lock includes a rotating shaft 1, a shaft holding piece 2, and a locking piece 3. The shaft holding piece 2 includes an elastic part 20 and a fixed part 21. The elastic part 20 is connected to the fixed part 21, and the fixed part 21 is sleeved on the rotating shaft 1. The locking piece 3 is sleeved on the rotating shaft 1 and can move along the axial direction of the rotating shaft 1 to abut against the elastic part 20, so that the elastic part 20 is deformed to lock the rotating shaft 1.

[0047] The rotating shaft 1 is directly or indirectly connected to an adjusting mechanism for adjusting the angle of the endoscope lens. When the rotating shaft 1 is locked, the adjusting mechanism connected to the rotating shaft 1 is also fixed, so that the endoscope lens is also fixed. For example, one end of the rotating shaft 1 is fixed with a hub 5, and the hub 5 is located near one end of the shaft holding piece 2. The hub 5 is connected to the adjusting mechanism for adjusting the angle of the endoscope lens. When the rotating shaft 1 is locked and cannot rotate, the hub 5 is also fixed, and the adjusting mechanism connected to the hub 5 is also fixed, so that the endoscope lens is also fixed. It is worth mentioning that the adjusting mechanism is a prior art, such as a curved snake bone. The specific structure of the adjusting mechanism will not be described here.

[0048] Further, the elastic part 20 is provided with a tapered surface 201 or an inclined surface, and the locking piece 3 is provided with a tapered opening 30 at one end close to the tapered surface 201 or the inclined surface of the elastic part 20, which is used to be connected with the tapered surface 201 or the inclined surface. When it is needed to lock the rotating shaft 1, the locking piece 3 is axially moved, so that the tapered opening 30 of the locking piece 3 is connected with the tapered surface 201 or the inclined surface of the elastic part 20. During the axial movement of the locking piece 3, the tapered opening 30 will press the tapered surface 201 or the inclined surface of the elastic part 20, and radial pressure is generated on the tapered surface 201 or the inclined surface, so that the elastic part 20 is bent, and the elastic part 20 is pressed on the rotating shaft 1, thereby locking the rotating shaft 1, so that the rotating shaft 1 cannot rotate. The radial locking force applied by the locking piece 3 is tightly pressed on the rotating shaft 1, and the radial locking force is larger than the axial locking force.

[0049] Reference Figures 4 to 6 The rotating shaft 1 is provided with a pin hole 10, which is arranged along the central axis of the rotating shaft 1 and penetrates the end surface of the rotating shaft 1 at one end. The hub 5 is provided with a connecting hole 50 corresponding to the pin hole 10. The hub 5 and the rotating shaft 1 are fixed in the axial direction by inserting a pin into the connecting hole 50 and the pin hole 10. Of course, the rotating shaft 1 and the hub 5 can also be fixed by other connection methods, such as screws, bolts, welding, etc.

[0050] The hub 5 and the rotating shaft 1 also need to be fixed in the radial direction. In the embodiment, the side surface of the hub 5 is provided with a square recess, and the end surface of the rotating shaft 1 is fixed with a protruding square block. The size of the square block and the rotation are matched with the square recess, and the square block is embedded in the square recess, thereby preventing the hub 5 from rotating relative to the rotating shaft 1. Of course, the square recess on the hub 5 can also be provided in other shapes, such as triangular, strip-shaped, hexagonal, etc. The hub 5 can also be fixed with the rotating shaft 1 by other components or structures to prevent the hub 5 from rotating relative to the rotating shaft 1, which affects the adjustment accuracy of the endoscope lens.

[0051] In the embodiment, the hub 5 is disc-shaped, and the rotating shaft 1 is a cylindrical rod. The direction of the radial pressure in the embodiment is perpendicular to the axial direction of the rotating shaft 1.

[0052] In the embodiment, the other end of the rotating shaft 1 away from the hub 5 is also connected with a handle 6. The handle 6 is located at the end away from the holding shaft piece 2. By rotating the handle 6, the rotating shaft 1 can be rotated, and then the hub 5 is rotated, the hub 5 rotates to drive the adjusting mechanism to rotate, and the adjusting mechanism rotates to adjust the endoscope lens to different angles, so that the doctor can use it flexibly when observing. The handle 6 and the rotating shaft 1 can be fixedly connected by welding, or can be connected by screws or bolts.

[0053] Further, the handle 6 is provided with anti-slip lines; or the handle 6 is provided in a hook shape to avoid sliding when holding.

[0054] Reference Figures 7 to 9 and in combination Figure 3 The angle lock further comprises a fixing disc 4, the fixing disc 4 is connected with the locking member 3, and the locking member 3 can move relative to the fixing disc 4. One of the functions of the fixing disc 4 is to limit the movement range of the locking member 3, and the other function is to provide a force point for the locking member 3 to move and press the shaft holding member 2.

[0055] As an example, the fixing disc 4 has a structure similar to that of a flange disc, and the fixing disc 4 can be fixed on the endoscope shell or be a part of the endoscope shell. The fixing disc 4 is provided with a through hole 40, the through hole 40 is a stepped hole, the stepped hole comprises a small hole 401 and a large hole 402, the small hole 401 is close to the middle side of the rotating shaft 1, and the large hole 402 is close to the end of the rotating shaft 1. The inner side wall of the small hole 401 is provided with an internal thread 41, the inner side wall of the large hole 402 can be a smooth surface, and the fixing part 21 of the shaft holding member 2 is installed in the large hole 402.

[0056] At this time, the locking member 3 is a locking nut, the locking nut is sleeved on the outer peripheral wall of the rotating shaft 1 and gap-fitted with the rotating shaft 1, the end of the locking nut close to the fixing disc 4 is provided with an external thread 31, the external thread 31 is matched with the internal thread 41, the locking member 3 is threadedly connected with the fixing disc 4, the end of the locking nut away from the fixing disc 4 is located outside the through hole 40, and the end of the locking nut is provided with an anti-skid pattern. The end of the locking nut inserted into the end of the through hole 40 is further provided with a tapered opening 30, the tapered opening 30 is a conical flared opening. When the end of the locking nut with the anti-skid pattern is held and the locking nut is driven to threadedly rotate with the fixing disc 4, the locking nut moves axially on the rotating shaft 1, the tapered opening 30 of the locking nut is in contact with the tapered surface 201 of the elastic part 20, and the tapered opening 30 slides along the tapered surface 201 in the moving process, so that the elastic part 20 is pressed radially towards the rotating shaft 1, the elastic part 20 is pressed tightly on the rotating shaft 1, and the rotating shaft 1 is locked and fixed.

[0057] It is worth mentioning that the hub 5 is arranged outside the disc surface of the fixing disc 4, and a gap is left between the hub 5 and the fixing disc 4, so that the fixing disc 4 does not affect the rotation of the hub 5 when the hub 5 needs to be rotated.

[0058] Reference Figure 10 and in combination Figure 3 The shaft holding member 2 comprises an elastic part 20 and a fixing part 21, the elastic part 20 is connected to the fixing part 21, and the elastic part 20 is provided with a tapered surface 201.

[0059] Specifically, the fixing part 21 is matched with the size and shape of the large hole 402 of the fixing disc 4, and the fixing part 21 can be fixedly connected with the hole wall of the large hole 402 by means of bonding; or the fixing part 21 is provided with a convex rib, and the hole wall of the large hole 402 is provided with a prismatic groove matched with the convex rib, so that the fixing part 21 is fixed in the large hole 402.

[0060] The elastic part 20 is an arc-shaped block 202 and is in plurality, the plurality of arc-shaped blocks 202 are spaced from each other and arranged in a circle around the rotating shaft 1, and one end of each arc-shaped block 202 close to the locking nut is processed into a conical surface 201, the conical surface 201 surrounds one circle of the rotating shaft 1 in the circumferential direction, and the other end of the arc-shaped block 202 is connected to one side of the fixing part 21. When the locking nut extrudes the arc-shaped block 202 through the conical surface 201, each arc-shaped block 202 is bent, and the one end with the conical surface 201 is pressed against the outer wall of the rotating shaft 1, so as to lock the rotating shaft 1.

[0061] The elastic part 20 in the embodiment is made of metal with certain resilience and hardness, such as copper, stainless steel or other required alloy. Of course, in other embodiments, it can also be made of required high polymer material.

[0062] The angle lock in the embodiment of the utility model converts the movement of the thread of the locking part 3 to the rotating shaft 1 into the radial pressure applied to the elastic part 20 of the shaft holding part 2, so as to lock the rotating shaft 1, which not only has large locking force, but also has less component quantity, simple structure, high reliability and low manufacturing cost. In addition, the doctor can operate simply when using, which meets the requirements of convenience, single-handed operation, small occupied space and the like in the application of the endoscope.

[0063] The embodiment of the utility model further provides an endoscope, which comprises the above-mentioned angle lock, the angle lock replaces the existing angle lock and cooperates with the endoscope, and the specific connection mode is that the hub 5 is connected with the adjusting mechanism of the angle of the endoscope, which will not be described here.

[0064] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. An angle lock characterized in that, The angle lock comprises: a rotating shaft (1) connected with an adjusting mechanism for adjusting the angle of an endoscope lens; a shaft holding member (2) comprising an elastic part (20) and a fixed part (21), the elastic part (20) being connected with the fixed part (21), and the fixed part (21) being sleeved on the rotating shaft (1); a locking member (3) sleeved on the rotating shaft (1), the locking member (3) being used to move along the axial direction of the rotating shaft (1) to abut against the elastic part (20) so as to lock the rotating shaft (1) after the elastic part (20) is deformed.

2. The angle lock of claim 1, wherein The elastic part (20) is provided with a tapered surface (201) or an inclined surface, and the locking member (3) is provided with a tapered opening (30) at one end close to the tapered surface (201) or the inclined surface, the tapered opening (30) being used to connect with the tapered surface (201) or the inclined surface.

3. The angle lock of claim 1, wherein The angle lock further comprises a fixed disc (4) connected with the locking member (3), and the locking member (3) can move relative to the fixed disc (4).

4. The angle lock of claim 3, wherein The fixed disc (4) is provided with a through hole (40), and an inner side wall of the through hole (40) is provided with an internal thread (41). The locking member (3) is a locking nut, the locking nut is sleeved on an outer peripheral wall of the rotating shaft (1), an outer wall of the locking nut is provided with an external thread (31), the external thread (31) is matched with the internal thread (41), and the locking member (3) is threadedly connected with the fixed disc (4).

5. The angle lock of claim 4, wherein, The through hole (40) is a stepped hole, the stepped hole comprises a small hole (401) and a large hole (402), the internal thread (41) is arranged on an inner side wall of the small hole (401), and the fixed part (21) of the shaft holding member (2) is arranged in the large hole (402).

6. The angle lock of claim 2, wherein The elastic part (20) is an arc-shaped block (202) and a plurality of the arc-shaped blocks (202) are arranged in a circumferential direction around the rotating shaft (1), one end of the arc-shaped block (202) is the tapered surface (201), and the other end is connected with the fixed part (21).

7. The angle lock according to any one of claims 3 to 5, characterized in that Two ends of the rotating shaft (1) are respectively connected with a hub (5) and a handle (6), the hub (5) is arranged at one end close to the shaft holding member (2), a gap is arranged between the hub (5) and the fixed disc (4), and the handle (6) is arranged at the other end away from the shaft holding member (2).

8. The angle lock of claim 7, wherein, The locking member (3) is provided with an anti-skid pattern.

9. The angle lock of claim 7, wherein, The rotating shaft (1) is provided with a pin hole (10), the hub (5) is provided with a connecting hole (50) corresponding to the pin hole (10), and a pin is inserted into the connecting hole (50) and the pin hole (10).

10. An endoscope characterized by comprising: The angle lock comprises the angle lock according to any one of claims 1 to 9. The angle lock comprises the angle lock according to any one of claims 1 to 9.

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