Handle bending operation locking assembly

Abstract

The utility model provides a handle bending operation locking assembly for solving the problem of time -consuming and labor -intensive and low work efficiency when locking adjustable bending assembly and operation assembly in prior art, it includes: fixed shaft, bending part, tight part and locking part, the fixed shaft is installed in operation handle, the bending part rotatable sleeve is equipped on fixed shaft, and can along fixed shaft axial movement, the bending part is used for driving adjustable bending assembly produces bending deformation, the tight part is located on the bending part, the locking part is rotatively connected on fixed shaft, is used for driving the bending part axial movement away from fixed shaft, makes the tight part locking the bending part rotates. The component compact structure, simple operation, is convenient for improving work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to a handle bending operation locking component. Background Technology

[0002] Endoscopic submucosal dissection (ESD), a minimally invasive treatment technique, involves using specialized surgical instruments such as a high-frequency electrosurgical unit under endoscopic guidance to peel away the lesion layer by layer from the underlying normal submucosa, thereby achieving en bloc resection of the diseased tissue. With its significant advantages of minimal trauma, less bleeding, and rapid postoperative recovery, this technique has become the preferred treatment for early-stage gastrointestinal mucosal cancer and benign submucosal tumors. Surgical instruments play a crucial role in ESD procedures. Effective tissue traction not only clearly exposes the uncut area for precise electrosurgical operation but also significantly improves the safety, efficiency, and ease of operation of the procedure.

[0003] However, during use, in order to better control the adjustable bending component and accurately locate the lesion, or when it is necessary to temporarily fix the adjustable bending component and the operating component at a certain angle, medical staff often have to manually hold the adjustable bending component and the operating component to fix them, which is time-consuming and laborious for medical staff and reduces their work efficiency. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a handle bending operation locking component to solve the problems of time-consuming, labor-intensive, and inefficient locking of adjustable bending components and operating components in the prior art.

[0005] To achieve the above and other related objectives, this utility model provides a handle bending operation locking assembly, comprising: A fixed shaft is installed inside the operating handle; The bending adjustment part is rotatably sleeved on the fixed shaft and can move axially along the fixed shaft. The bending adjustment part is used to drive the adjustable bending assembly to produce bending deformation. A clamping part, which is located on the bending part; A locking part is rotatably connected to the fixed shaft to drive the bending part to move axially away from the fixed shaft, so that the abutment part locks the bending part from rotating.

[0006] Optionally, the locking part includes a rotating arm, and the operating handle has a locking groove, the rotating arm passing through the locking groove to the outside of the operating handle; A locking component is rotatably connected to the fixed shaft. By rotating the rotating arm, the locking component drives the bending part to move axially along the fixed shaft. The bending part is locked in place by the abutment.

[0007] Optionally, the locking element includes a locking block, the outer wall of the fixed shaft has an external thread, and the locking block has an internal thread that engages with the external thread.

[0008] Optionally, the height of the locking groove is greater than the thickness of the rotating arm.

[0009] Optionally, the abutting part includes a first elastic element, which is disposed in contact with the bending part, and the locking part drives the bending part to move axially away from the fixed axis, so that the first elastic element is compressed to lock the rotation of the bending part.

[0010] Optionally, the first elastic element includes a friction plate, a sealing ring, a wave washer, or a wave spring.

[0011] Optionally, the abutting part further includes a first abutting ring, which is disposed inside the operating handle and in contact with the first elastic element.

[0012] Optionally, the clamping part includes a plurality of indexing teeth, which are spaced apart on the bending part, and a tooth groove is formed between adjacent indexing teeth; The second abutment ring has one end fixedly connected to the operating handle, and the other end of the second abutment ring has a toothed structure that can be adapted to the toothed groove when locked. The second elastic element is used to reset the bending part toward one end of the fixed shaft.

[0013] Optionally, the second elastic element includes a helical spring.

[0014] Optionally, the bending section includes a rotating column, which has a through hole along its own central axis. The through hole is rotatably sleeved on the fixed shaft and can at least partially move along the axial direction of the fixed shaft. A rotating component is connected to an adjustable bending assembly at a distance via a bending power component, and the rotating component is coaxially and fixedly fitted with the rotating column.

[0015] As described above, the handle bending operation locking assembly of this utility model has at least the following beneficial effects: By integrating the bending section, the clamping section, and the locking section into the operating handle, the bending and locking functions are integrated, resulting in a compact structure, improved space utilization, and reduced manufacturing costs. Rotating the bending section, which rotates on a fixed axis, transmits this rotational motion to the adjustable bending assembly, causing it to bend. The clamping section's contact with the bending section does not affect its rotational adjustment, thus allowing for adjustment of the adjustable bending assembly's curvature. When locking the bending angle of the adjustable bending assembly, the locking section drives the bending section to move axially away from the fixed axis, causing the clamping section to lock the bending section's rotation. This restricts the bending section's rotation without external force, saving time and effort in locking the adjustable bending assembly to the current angle. The operation is convenient and improves efficiency. Furthermore, applying a greater force to the bending section than to the clamping section allows for fine-tuning of the bending section. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model; Figure 2 The diagram shown is a cross-sectional view of an embodiment of the present invention. Figure 3 Shown is a cross-sectional view of another embodiment of this utility model; Figure 4 This is shown as the present invention. Figure 3 Enlarged view of section A in the middle; Figure 5 The diagram shown is a three-dimensional structural schematic of the first handle body of this utility model. Figure 6 The diagram shown is a three-dimensional structural schematic of the second handle body of this utility model.

[0017] Component designation explanation Operating handle 1, inner cavity 11, first handle body 12, second handle body 13, snap-fit ​​structure 14, slot 141, buckle 142, locking groove 15, locking half groove 151, through hole 16; Fixed shaft 2; Adjusting part 3, rotating column 31, through hole 311, adjusting handle 312, rotating part 32, annular plate 321, fixing part 322, annular protrusion 323, first limiting part 324; The clamping part 4, the first elastic element 41, the first abutting ring 42, the indexing tooth 43, the second abutting ring 44, the toothed structure 441, and the second elastic element 45; Locking part 5, rotating arm 51, locking component 52, locking block 521. Detailed Implementation

[0018] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0019] Please see Figures 1 to 6 It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0020] In this utility model, "proximal end" and "distal end" refer to the relative distance between the medical device and the operator during use. The end closer to the operator is the proximal end, and the end farther away from the operator is the distal end.

[0021] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0022] In this embodiment, please refer to Figures 1 to 6 This utility model provides a handle bending operation locking component, comprising: A fixed shaft 2 is installed inside the operating handle 1; the fixed shaft 2 has a weight-reducing hole along its own axial direction, which can save materials and reduce weight.

[0023] The bending adjustment part 3 is rotatably sleeved on the fixed shaft 2 and can move axially along the fixed shaft 2. The bending adjustment part 3 is used to drive the adjustable bending assembly to produce bending deformation. The adjustable bending assembly can adopt an existing structure, which is not limited here.

[0024] A clamping part 4 is located on the bending part 3; a locking part 5 is rotatably connected to the fixed shaft 2 to drive the bending part 3 to move axially away from the fixed shaft 2, so that the clamping part 4 locks the bending part 3 to rotate.

[0025] By integrating the bending adjustment part 3, the clamping part 4, and the locking part 5 into the operating handle 1, the bending and locking functions are integrated, resulting in a compact structure, improved space utilization, and reduced manufacturing costs. By rotating the bending adjustment part 3, which rotates on the fixed shaft 2, the rotational motion is transmitted to the adjustable bending assembly, causing it to bend. The clamping part 4 contacts the bending adjustment part 3 without affecting its rotational adjustment, thus allowing for adjustment of the bending angle of the adjustable bending assembly. When it is necessary to lock the bending angle of the adjustable bending assembly, the locking part 5 drives the bending adjustment part 3 to move axially away from the fixed shaft 2, causing the clamping part 4 to lock the rotation of the bending adjustment part 3. This restricts the rotation of the bending adjustment part 3 without external force, thus locking the adjustable bending assembly at the current angle quickly and effortlessly, improving operational efficiency. Furthermore, by applying a greater force to the bending adjustment part 3 than to the clamping part 4, fine-tuning of the bending adjustment part 3 can also be achieved.

[0026] In this embodiment, please refer to Figure 1 , Figure 2 or Figure 4 The locking part 5 includes a rotating arm 51, and the operating handle 1 has a locking groove 15. The rotating arm 51 passes through the locking groove 15 to the outside of the operating handle 1. The locking member 52 is rotatably connected to the fixed shaft 2. By rotating the rotating arm 51, the locking member 52 drives the bending part 3 to move axially along the fixed shaft 2. The bending part 3 is locked to rotate by the abutment part 4.

[0027] When locked, rotating the arm 51 outside the operating handle 1 causes the locking member 52 to rotate on the fixed shaft 2. The outer contour of the rotating locking member 52 pushes the adjusting part 3, causing it to move axially along the fixed shaft 2. The adjusting part 3 drives the abutment part 4, pressing the adjusting part 3 tightly against the inner end face of the operating handle 1. By rotating the arm 51, the user can control the clamping force, thus achieving locking and making the locking force precisely adjustable. When unlocking, rotating the arm 51 in the opposite direction causes the locking member 52 to rotate back, eliminating its thrust on the adjusting part 3. The abutment part 4 pushes the adjusting part 3 in the opposite direction, bringing the abutment part 4 to its initial state. At this time, the adjusting part 3 can rotate freely, allowing for adjustment of the curvature of the adjustable bending component.

[0028] In this embodiment, please refer to Figure 2 or Figure 4The locking element 52 includes a locking block 521. The outer wall of the fixed shaft 2 has an external thread, and the locking block 521 has an internal thread that engages with the external thread. The locking block 521 and the bending part 3 can be rotatably connected or abutted. The threaded engagement between the locking block 521 and the fixed shaft 2 can stably maintain the axial position. When the locking block 521 is rotated by the rotating arm 51, the axial movement distance of the locking block 521 can be precisely controlled by controlling the rotation amplitude of the rotating arm 51, thereby precisely adjusting the displacement of the bending part 3.

[0029] In this embodiment, please refer to Figure 1 The height of the locking groove 15 is greater than the thickness of the rotating arm 51. When the locking block 521 drives the bending part 3 to move axially through the threaded transmission, the rotating arm 51 and the locking block 521 are linked. The gap reserved in the height of the locking groove 15 allows the rotating arm 51 to move freely in the axial direction without causing motion interference due to the height restriction of the locking groove 15.

[0030] In this embodiment, please refer to Figure 2 or Figure 5 The clamping part 4 includes a first elastic element 41, which is in contact with the bending part 3. The locking part 5 drives the bending part 3 to move axially away from the fixed axis 2, so that the first elastic element 41 is compressed to lock the rotation of the bending part 3. The first elastic element 41 is initially in a state of free extension or slight compression, which does not affect the rotation adjustment of the bending part 3.

[0031] In this embodiment, please refer to Figure 2 or Figure 5 The first elastic element 41 includes a friction plate, a sealing ring, a wave washer, or a wave spring. By selecting different first elastic elements 41, different locking strengths, space constraints, and functional requirements can be matched.

[0032] In this embodiment, please refer to Figure 2 or Figure 5 The clamping part 4 further includes a first abutting ring 42, which is disposed inside the operating handle 1 and contacts the first elastic member 41, thereby providing a uniform contact force. The first abutting ring 42 is always lightly pressed against the bending part 3, eliminating axial gaps and ensuring no shaking. During the locking process, rotating the locking part 5 pushes the bending part 3 to move, causing the first elastic member 41 to be further compressed. The increased force generated is evenly transmitted to the bending part 3 through the first abutting ring 42, ultimately pressing it against the operating handle 1 to achieve locking. During the releasing process, reversing the locking part 5 reduces the pressure on the first elastic member 41, causing the first elastic member 41 to spring back and reset the bending part 3 towards the fixed shaft 2.

[0033] In this embodiment, please refer to Figure 3 andFigure 4 The clamping part 4 includes a plurality of indexing teeth 43, which are spaced apart on the bending part 3, and a tooth groove is formed between adjacent indexing teeth 43. The second abutment ring 44 has one end fixedly connected to the operating handle 1, and the other end of the second abutment ring 44 is provided with a toothed structure 441 that can be adapted to the tooth groove when locked. The second elastic element 45 is used to reset the bending part 3 toward one end of the fixed shaft 2.

[0034] During the locking process, rotating the locking part 5 pushes the bending part 3 to move, causing the second elastic element 45 to be further compressed, so that the tooth groove and the toothed structure 441 are matched to achieve locking. During the releasing process, reversing the locking part 5 reduces the pressure on the second elastic element 45, and the second elastic element 45 rebounds, resetting the bending part 3 to one end of the fixed shaft 2. At this time, the tooth groove and the toothed structure 441 are disconnected.

[0035] In this embodiment, please refer to Figure 4 The second elastic element 45 includes a helical spring.

[0036] In this embodiment, please refer to Figures 1 to 6 The bending adjustment part 3 includes a rotating column 31, which has a through hole 311 along its own central axis. The through hole 311 is rotatably sleeved on the fixed shaft 2 and can at least partially move along the axial direction of the fixed shaft 2. The through hole 311 can be convex. The other end of the rotating column 31 is provided with a bending adjustment handle 312. At this time, the outer side wall of the other end of the rotating column 31 has multiple protruding teeth in the circumferential direction. The inner surface of the shaft hole of the bending handwheel has a keyway that matches the multiple protruding teeth, so that the bending handwheel rotates and drives the rotating column 31 to rotate. Other structures can be used for the connection, which are not limited here.

[0037] Rotating component 32 is connected to the adjustable bending assembly at the far end via a bending power component, and the rotating component 32 is coaxially fixedly engaged with the rotating column 31.

[0038] The rotating component 32 includes an annular plate 321 integrally formed on the outside of the rotating column 31, and at least one fixing component 322 fixed to the side of the annular plate 321. The fixing component 322 is used to connect to the proximal end of the bending power component. The number of fixing components 322 is equal to the number of bending power components. In this case, the proximal end of the bending power component is connected to the fixing component 322, and the distal end is connected to the adjustable bending assembly. The bending power component can be a wire structure made of metal, such as steel wire or tungsten wire, or it can be a traction cable made of polymer material.

[0039] The rotating member 32 also includes an annular protrusion 323, which has a gap with the rotating column 31 to accommodate the pressing part 4. At this time, the first elastic member 41 is disposed in the gap between the annular protrusion 323 and the rotating column 31, or multiple indexing teeth 43 are spaced along the circumferential sidewall of the annular plate 321 to form an annular structure, and the second elastic member 45 is located in the gap between the annular protrusion 323 and the rotating column 31.

[0040] The rotating component 32 also includes a first limiting component 324, which is disposed on the side wall of the annular protrusion 323 and has a gap with the annular plate 321 to accommodate the bending power component, prevent the bending power component from moving axially, and realize the limiting function.

[0041] The operating handle 1 includes a first handle body 12 and a second handle body 13. The first handle body 12 and the second handle body 13 are connected by a snap-fit ​​structure 14. The operating handle 1 has an inner cavity 11. The fixed shaft 2 is installed in the inner cavity 11 and is integrally formed with the first handle body 12 by injection molding, which improves positioning accuracy, strengthens structural stability, simplifies the assembly process, and adapts to the high requirements of medical scenarios, thereby reducing processing steps and lowering mass production costs.

[0042] The first abutment ring 42 or the second abutment ring 44 is integrally formed with the second handle body 13, which improves positioning accuracy and strengthens structural stability. At the same time, it simplifies the assembly process and adapts to the high requirements of medical scenarios, thereby reducing processing steps and lowering mass production costs. The locking groove 15 can be set on one of the connection points of the first handle body 12 and the second handle body 13, or a locking half groove 151 can be set at the connection point of the first handle body 12 and the second handle body 13. After the first handle body 12 and the second handle body 13 are connected by the snap-fit ​​structure 14, a locking groove 15 is formed for the rotary arm 51 to pass through. The opening of the locking groove 15 faces the rear end of the operating handle 1, which facilitates human-machine interaction.

[0043] The operating handle 1 may also be provided with a through hole 16 for the rotating column 31 to pass through, and the through hole 16 is connected to the inner cavity 11 of the operating handle 1. The through hole 16 is provided on the second handle body 13, and the through hole 16 is collinear with the central axis of the rotating column 31.

[0044] The snap-fit ​​structure 14 includes a slot 141 and a buckle 142. The slot 141 and the buckle 142 are respectively disposed on the first handle body 12 and the second handle body 13, which makes the assembly efficient, fast and convenient for non-destructive disassembly and maintenance.

[0045] Working principle: When using the bending adjustment mechanism, the bending handwheel rotates, causing the rotating column 31 to rotate, which in turn drives the rotating component 32 to rotate. The rotating component 32, through the bending power component, causes the adjustable bending assembly to bend. When it is necessary to lock the bending angle of the adjustable bending assembly, the rotating arm 51 outside the operating handle 1 is rotated. The rotating arm 51 drives the locking component 52 to rotate on the fixed shaft 2. The outer contour of the rotating locking component 52 pushes the rotating component 32 and the rotating column 31, causing them to move axially along the fixed shaft 2. The rotating component 32 and the rotating column 31 drive the pressing part 4, pressing the adjusting part 3 tightly against the inner end face of the operating handle 1. When unlocking, the rotating arm 51 is rotated in the opposite direction, the locking component 52 rotates back, and its thrust on the rotating component 32 and the rotating column 31 disappears. The pressing part 4 pushes the adjusting part 3 to move in the opposite direction, so that the pressing part 4 is in its initial state. At this time, the rotating component 32 and the rotating column 31 can rotate freely to adjust the bending degree of the adjustable bending assembly.

[0046] In summary, this utility model integrates the bending adjustment part 3, the clamping part 4, and the locking part 5 into the operating handle 1, thereby achieving integrated bending and locking functions, a compact structure, improved space utilization, and reduced manufacturing costs. By rotating the bending adjustment part 3, it can rotate on the fixed shaft 2, simultaneously transmitting the rotational motion to the adjustable bending assembly, causing it to bend. The clamping part 4 contacts the bending adjustment part 3 without affecting its rotational adjustment, thus allowing for adjustment of the bending angle of the adjustable bending assembly. When it is necessary to lock the bending angle of the adjustable bending assembly, the locking part 5 drives the bending adjustment part 3 to move axially away from the fixed shaft 2, causing the clamping part 4 to lock the rotation of the bending adjustment part 3. This allows for limiting the rotation of the bending adjustment part 3 without external force, thus saving time and effort in locking the adjustable bending assembly at the current angle, making operation convenient and improving efficiency. Furthermore, by applying a greater force to the bending adjustment part 3 than to the clamping part 4, fine-tuning of the bending adjustment part 3 can also be achieved. Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0047] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A handle bending operation locking assembly, characterized in that, include: A fixed shaft is installed inside the operating handle; The bending adjustment part is rotatably sleeved on the fixed shaft and can move axially along the fixed shaft. The bending adjustment part is used to drive the adjustable bending assembly to produce bending deformation. A clamping part, which is located on the bending part; A locking part is rotatably connected to the fixed shaft to drive the bending part to move axially away from the fixed shaft, so that the abutment part locks the bending part from rotating.

2. The handle bending operation locking assembly according to claim 1, characterized in that: The locking part includes a rotating arm, and the operating handle has a locking groove, through which the rotating arm extends to the outside of the operating handle; A locking component is rotatably connected to the fixed shaft. By rotating the rotating arm, the locking component drives the bending part to move axially along the fixed shaft. The bending part is locked in place by the abutment.

3. The handle bending operation locking assembly according to claim 2, characterized in that: The locking component includes a locking block, the outer wall of the fixed shaft has an external thread, and the locking block has an internal thread that engages with the external thread.

4. The handle bending operation locking assembly according to claim 2 or 3, characterized in that: The height of the locking groove is greater than the thickness of the rotating arm.

5. The handle bending operation locking assembly according to claim 1, characterized in that: The clamping part includes a first elastic element, which is disposed in contact with the bending part. The locking part drives the bending part to move axially away from the fixed axis, so that the first elastic element is compressed to lock the bending part from rotating.

6. The handle bending operation locking assembly according to claim 5, characterized in that: The first elastic element includes a friction plate, a sealing ring, a wave washer, or a wave spring.

7. The handle bending operation locking assembly according to claim 5 or 6, characterized in that: The clamping part further includes a first abutting ring, which is disposed inside the operating handle and in contact with the first elastic element.

8. The handle bending operation locking assembly according to claim 1, characterized in that: The clamping part includes multiple indexing teeth, which are spaced apart on the bending part, and grooves are formed between adjacent indexing teeth. The second abutment ring has one end fixedly connected to the operating handle, and the other end of the second abutment ring has a toothed structure that can be adapted to the toothed groove when locked. The second elastic element is used to reset the bending part toward one end of the fixed shaft.

9. The handle bending operation locking assembly according to claim 8, characterized in that: The second elastic element includes a helical spring.

10. The handle bending operation locking assembly according to claim 1, characterized in that: The bending section includes a rotating column, which has a through hole along its own central axis. The through hole is rotatably sleeved on the fixed shaft and can at least partially move along the axial direction of the fixed shaft. A rotating component is connected to an adjustable bending assembly at a distance via a bending power component, and the rotating component is coaxially and fixedly fitted with the rotating column.

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