Endoscope rotation control mechanism and endoscope
By designing the endoscope rotation control mechanism, using a multi-layer socket structure and sealing design, the complex sealing problem of the endoscope insertion component is solved, and simple disassembly and efficient sealing is achieved, and the sealing effect of the rotating part is improved.
Patent Information
- Application Number
- CN202411292024.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2044-09-14
AI Technical Summary
The existing endoscopes have problems such as complex sealing structure and inconvenient disassembly and assembly operations in the active rotational part of the insertion component, especially in the silicone sleeve, which requires a good seal to prevent liquid leakage.
An endoscope rotation control mechanism is designed, through a multi-layer socket structure of an external operating member and an insertion member, and a socket method for pre-connecting the outside of the insertion member, the first socket and the rotating socket are connected to the outside of the insertion member. , simplifies the disassembly and assembly process, and improves the sealing effect through sealing rings, sealing grooves and raised structures.
It realizes simple disassembly and efficient sealing of the insertion parts, extends the liquid flow path and tortuousness, significantly improves the sealing effect of the rotating parts, and reduces the complexity in production and use.
Smart Images
Figure CN118787298B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of endoscopes, and in particular to an endoscope rotation control mechanism and an endoscope. Background Art
[0002] Existing endoscopes generally include an external operating part and an insertion part. Among them, the insertion part needs to have a certain rotation function in addition to the bending function. That is, the axis of the insertion part is used as the rotation axis, and it rotates at a certain angle relative to the external operating part to meet a wider range of observation and treatment.
[0003] In order to realize the rotation function, the existing endoscope is generally fixedly sleeved on the outside of the insertion part by a silicone sleeve, and the rotation of the insertion part is driven by the rotation of the silicone sleeve. However, this structure has certain disadvantages. For example, under the premise of satisfying the rotation function, the sleeve joint of the silicone sleeve and the insertion part needs to be well sealed. First, because the endoscope needs to be disinfected and sterilized, a good seal helps prevent liquid from entering the endoscope; second, because during the use of the endoscope, there may be surgical fluid inside the insertion part, and a good seal helps prevent the liquid inside the insertion part from leaking out from the silicone sleeve.
[0004] Therefore, the current endoscopes, especially at the silicone sleeve, that is, at the active rotating part of the insertion component, have the disadvantages of numerous sealing structure parts, complex assembly operation process, and time-consuming and labor-intensive mass production process. Summary of the invention
[0005] The main purpose of the present invention is to provide an endoscope rotation control mechanism and an endoscope, aiming to solve the problems of complex sealing structure and inconvenient assembly and disassembly operations at the active rotation part of the insertion component in the traditional technology.
[0006] To achieve the above-mentioned purpose, the present invention proposes an endoscope rotation control mechanism, comprising:
[0007] The external operating component comprises a main body and a first cylinder member protruding from the front end of the main body, the main body extends radially outward of the first cylinder member to form a first stop surface facing forward, the first cylinder member is integrally formed with at least a part of the shell plate of the main body, the first cylinder member is penetrated along the front-back direction with an insertion hole communicating with the inner cavity of the main body, and a part of the front end surface of the first cylinder member is protruding to form a stop rib;
[0008] The second cylinder member is provided with a connecting hole in the front-to-back direction, the second cylinder member comprises a first cylinder section and a second cylinder section connected in sequence from front to back, a side surface of the first cylinder section is partially convexly provided with a movable rib extending in the front-to-back direction, and the second cylinder section is plugged into the plug hole to drive the rear end surface of the movable rib to abut against the front end surface of the first cylinder member;
[0009] A third cylinder member is fixedly sleeved on the front section of the first cylinder section, and a second stop surface facing backward is formed on the radial outer side of the first cylinder section. The third cylinder member is provided with a mounting hole in the front-to-back direction. The third cylinder member is fixedly sleeved on the outer side of the insertion component through the mounting hole, and drives the rear section of the insertion component to extend into the inner cavity of the main body through the connecting hole; and,
[0010] A rotating cylinder, fixedly sleeved on the outer side of the second cylinder, and clamped and limited between the first stop surface and the second stop surface;
[0011] Wherein, driven by an external force, the rotating cylinder drives the second cylinder, the third cylinder and the inserting component to rotate relative to the first cylinder, so that the stop rib can be movably adjusted in the direction of approaching and moving away from the movable rib.
[0012] Optionally, the side surface of the movable rib is concavely provided with a buckle groove, the inner cylinder wall of the rotating cylinder is convexly provided with a clamping protrusion, and the clamping protrusion is buckled and connected with the buckle groove; and / or,
[0013] The outer surface of the rotating cylinder is provided with an anti-slip structure.
[0014] Optionally, the rear end surface of the second barrel section is provided with a plurality of grooves in sequence along the circumference of the connecting hole to separate the rear section of the second barrel section into a plurality of arms, and the outer peripheral side wall of each arm is convexly provided to form an elastic buckle, and when the second barrel section is inserted into the insertion hole, each elastic buckle extends backward from the insertion hole and is buckled and fixed on the rear end surface of the first barrel member.
[0015] Optionally, the third cylinder member and the second cylinder member are made of a hard material by integral molding.
[0016] Optionally, the third cylinder member and the second cylinder member are separately formed, and the third cylinder member is made of an elastic material, and the second cylinder member is made of a hard material.
[0017] Optionally, the second cylinder is made of a hard material, and the movable ribs extend forward to form extension ribs, and at least the front section of the extension ribs is convex and gradually decreases in height from the back to the front;
[0018] A slot is formed through the hole wall of the mounting hole toward the rear, the rear section of the third cylinder is sleeved on the front section of the first cylinder, and the slot is inserted and connected with the extension rib.
[0019] Optionally, at least two movable ribs are evenly spaced along the circumference of the second barrel section, and a stop rib is correspondingly provided between every two adjacent movable ribs.
[0020] Optionally, an extension length of the stop rib along the front-to-back direction is not greater than an extension length of the movable rib along the front-to-back direction.
[0021] Optionally, at the connection point between the two, the diameter of the insertion hole is not less than the outer diameter of the second barrel section;
[0022] The endoscope rotation control mechanism also includes a sealing ring, which is sleeved between the insertion hole and the second barrel section.
[0023] Optionally, the main body comprises a first shell plate and a second shell plate sequentially connected along the radial direction of the first cylinder, and the first shell plate and the second shell plate are detachably connected to jointly enclose and define an inner cavity;
[0024] The first shell plate and the first cylinder are integrally formed, and at the connection between the two, the outer peripheral side wall of the first cylinder and / or the first shell plate is provided with a sealing groove, and the second shell plate is correspondingly provided with a sealing protrusion, and the sealing protrusion is sealingly connected to the sealing groove.
[0025] In addition, to achieve the above-mentioned purpose, the present invention also provides an endoscope, including an insertion component and the endoscope rotation control mechanism as described above.
[0026] In the technical solution provided by the present invention, since the third cylinder member is pre-connected or fixedly sleeved on the outer side of the insertion member and the first cylinder section by an integral molding method, and the first cylinder member is pre-connected or fixed to the main body by an integral molding method, it is only necessary to sleeve the rotating cylinder member on the outer side of the second cylinder member and insert the second cylinder section into the insertion hole, so as to achieve the purpose of inserting the insertion member into the inner cavity of the main body, and the third cylinder member, the sleeve cylinder body, the first cylinder member and the rotating cylinder member can be installed in place at the same time, which has the characteristics of easy disassembly and assembly; and, since there are at least multiple layers of sleeve protection of the first cylinder body, the first cylinder member and the rotating cylinder member at the connection between the insertion member and the external operating member (that is, the active rotation part of the insertion member), it helps to greatly extend the flow path length and flow tortuosity of the liquid, thereby helping to significantly improve the sealing effect of this part. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0028] Figure 1 A three-dimensional schematic diagram of an embodiment of an endoscope rotation control mechanism provided by the present invention;
[0029] Figure 2 for Figure 1 Schematic diagram of the main structure of the endoscope rotation control mechanism;
[0030] Figure 3 for Figure 2 An enlarged schematic diagram of part of the structure at the external operating component;
[0031] Figure 4 for Figure 2 A three-dimensional schematic diagram of the second cylinder;
[0032] Figure 5 for Figure 2 A three-dimensional schematic diagram of the third cylinder;
[0033] Figure 6 for Figure 2 A three-dimensional schematic diagram of a rotating cylinder;
[0034] Figure 7 for Figure 2 A schematic diagram of the assembly of the third cylinder, the second cylinder and the first cylinder at a viewing angle;
[0035] Figure 8 for Figure 2 A schematic diagram of the assembly of the third cylinder, the second cylinder and the first cylinder from another viewing angle;
[0036] Fig. 9 for Figure 2 A three-dimensional schematic diagram of the second shell plate in another perspective.
[0037] Description of Figure Numbers:
[0038] 100 insertion component; 200 external operating component; 210 main body; 211 first stop surface; 212 first shell plate; 212a sealing groove; 213 second shell plate; 213a sealing protrusion; 220 first cylinder member; 221 insertion hole; 222 stop rib; 300 second cylinder member; 301 connecting hole; 310 first cylinder section; 311 movable rib; 311a buckle groove; 311b extension rib; 320 second cylinder section; 321 slot; 322 support arm; 323 elastic buckle; 400 third cylinder member; 410 second stop surface; 420 mounting hole; 430 slot; 500 rotating cylinder member; 510 buckle convex; 520 anti-slip structure; 610 sealing ring.
[0039] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0041] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0043] See also Figures 1 to 9The present invention provides an endoscope rotation control mechanism and an endoscope used therein. The endoscope further includes an insertion component 100; the endoscope rotation control mechanism mainly includes an external operating component 200, a second cylinder 300, a third cylinder 400 and a rotating cylinder 500. Among them, the insertion component 100 is arranged to extend in the front-to-back direction; the external operating component 200 includes a main body 210 and a first cylinder member 220 protruding from the front end of the main body 210, the main body 210 extends radially outward from the first cylinder member 220 to form a first stop surface 211 facing forward, the first cylinder member 220 is integrally formed with at least a partial shell plate of the main body 210, the first cylinder member 220 is penetrated with a plug hole 221 connecting to the inner cavity of the main body 210 in the front-to-back direction, and the front end surface of the first cylinder member 220 is partially protruded to form a stop rib 222; the second cylinder member 300 is penetrated with a connecting hole 301 in the front-to-back direction, the second cylinder member 300 includes a first cylinder section 310 and a second cylinder section 320 connected in sequence from front to back, and the side surface of the first cylinder section 310 is partially protruded to form a stop rib 222 along the front-to-back direction. The movable rib 311 extends backward, and the second barrel section 320 is inserted into the insertion hole 221 to drive the rear end surface of the movable rib 311 to abut against the front end surface of the first barrel member 220; the third barrel member 400 is fixedly sleeved on the front section of the first barrel section 310, and a second stop surface 410 facing backward is formed on the radial outer side of the first barrel section 310. The third barrel member 400 is penetrated by a mounting hole 420 in the front-to-back direction. The third barrel member 400 is fixedly sleeved on the outer side of the insertion member 100 through the mounting hole 420, and drives the rear section of the insertion member 100 to extend into the inner cavity of the main body 210 through the connecting hole 301; the rotating barrel member 500 is fixedly sleeved on the outer side of the second barrel member 300, and is clamped and limited between the first stop surface 211 and the second stop surface 410;
[0044] Driven by external force, the rotating cylinder 500 drives the second cylinder 300 , the third cylinder 400 and the inserting member 100 to rotate relative to the first cylinder 220 , so that the stop rib 222 can be movably adjusted in the direction of approaching and moving away from the movable rib 311 .
[0045] In the technical solution provided by the present invention, since the third cylinder member 400 is pre-connected or fixedly sleeved on the outer side of the insertion member 100 and the first cylinder section 310 by an integral molding method, and the first cylinder member 220 is pre-connected or fixedly sleeved on the main body 210 by an integral molding method, it is only necessary to sleeve the rotating cylinder member 500 on the outer side of the second cylinder member 300 and insert the second cylinder section 320 into the insertion hole 221, so as to achieve the purpose of inserting the insertion member 100 into the inner cavity of the main body 210, and the third cylinder member 400, the sleeve cylinder body, the first cylinder member 220 and the rotating cylinder member 500 can be installed in place at the same time, which has the characteristics of easy disassembly and assembly; and, since at least there are multiple layers of sleeve protection of the first cylinder body, the first cylinder member 220 and the rotating cylinder member 500 at the connection point between the insertion member 100 and the external operating member 200 (that is, the active rotation part of the insertion member 100), it helps to greatly extend the flow path length and flow tortuosity of the liquid, thereby helping to significantly improve the sealing effect of this part.
[0046] In the present design, the insertion component 100 is arranged to extend approximately in the front-to-back direction, and includes an insertion tube and a head end structure fixed to the front end of the insertion tube. The head end structure may be provided with, for example, an imaging device for capturing image information, an illumination device for providing illumination to the imaging device, etc., according to actual needs. The insertion tube may be provided to be at least partially bendable according to actual needs, so that the orientation of the imaging surface of the imaging device in the head end structure may be driven and flexibly adjusted.
[0047] The insertion component 100 and the external operating component 200 are mechanically connected through the second cylinder 300, the third cylinder 400 and the rotating cylinder 500. It can be understood that under the connection of the second cylinder 300, the third cylinder 400 and the rotating cylinder 500, the insertion component 100 can at least rotate around its own axis relative to the external operating component 200. According to actual needs, the insertion component 100 can also be configured to be able to perform a certain degree of forward and backward telescopic movement relative to the external operating component 200.
[0048] The external operating component 200 includes a main body 210 and a first cylinder 220. The main body 210 can be configured in any suitable shape according to actual needs, such as a pistol shape, a handle shape, a straight rod shape, a disc shape, etc. The main body 210 can be directly formed into an integral structure through a process such as injection molding, or can be obtained by detachably or non-detachably connecting at least two shell plates after separate molding.
[0049] Specifically, please combine Figure 2 , Figure 3 and Fig. 9In one embodiment, the main body 210 includes a first shell plate 212 and a second shell plate 213 which are sequentially connected along the radial direction of the first cylinder 220. The first shell plate 212 and the second shell plate 213 are detachably connected to jointly enclose and define an inner cavity when connected. Based on this, the first cylinder 220 can be set as a structure independent of the first shell plate 212 and the second shell plate 213, and can be detachably connected to the first shell plate 212 and the second shell plate 213 respectively. Alternatively, the first shell plate 212 is integrally formed with the first cylinder 220, and then detachably connected to the second shell plate 213.
[0050] The first shell plate 212 can be directly integrally formed with a part of the outer peripheral side wall of the first cylinder member 220, so that when connected with the second shell plate 213, the front section of the first cylinder member 220 extends forward outside the inner cavity of the main body 210, and the rear section of the first cylinder member 220 extends into the inner cavity of the main body 210. In this way, the area of the formed part between the first shell plate 212 and the first cylinder member 220 can be made larger, and the connection area of the first shell plate 212, the second shell plate 213 and the first cylinder member 220 can be made larger, which is more conducive to the stability of the connection.
[0051] Further, a sealing groove 212a may be provided at the connection between the first shell plate 212, the first cylinder member 220 and the second shell plate 213, for example, on the outer peripheral side wall of the first cylinder member 220 and / or the first shell plate 212, and a sealing protrusion 213a may be provided correspondingly on the second shell plate 213, and the sealing protrusion 213a and the sealing groove 212a are sealed and connected. The size, structure, etc. of the sealing groove 212a and the sealing protrusion 213a are designed to be adapted. Specifically, when the first shell plate 212 and the outer peripheral side wall of the first cylinder member 220 are partially integrally formed as described above, the sealing groove 212a may be extended along the circumference of the first cylinder member 220 to be opened at the remaining outer peripheral side wall, and may also be extended to be opened at all the remaining connection surfaces of the first shell plate 212 and the second shell plate 213, so as to ensure that the sealing effect of the connection between the first shell plate 212, the second shell plate 213 and the first cylinder member 220 is enhanced.
[0052] Please combine Figures 2 to 3 , Figures 7 and 8 The first cylinder 220 is provided with an insertion hole 221 in the front-to-back direction, and the insertion hole 221 is connected to the inner cavity of the main body 210. The second cylinder section 320 of the second cylinder 300 is at least partially inserted into the insertion hole 221:
[0053] In order to make the rotation between the second barrel section 320 of the second barrel member 300 and the socket 221 smoother, at least part of the connection between the two, the aperture of the socket 221 is not less than the outer diameter of the second barrel section 320, that is, a certain gap is reserved between the second barrel section 320 and the socket 221 to avoid direct surface contact between the two and increase friction damping during rotation.
[0054] Next, the endoscope rotation control mechanism further includes a sealing ring 610, which is sleeved between the jack 221 and the second barrel section 320. The sealing ring 610 is specifically made of an elastic material, and the shape of its transverse cross section can be, for example, circular or quasi-circular, so that it can ensure the sealing connection between the jack 221 and the second barrel section 320, so that the inner cavity of the external operating component 200 is isolated from the external environment of the endoscope, thereby forming a sealed environment for the inner cavity of the external operating component 200; and it can also minimize the contact area with the hole wall of the jack 221 and / or the outer peripheral side surface of the second barrel section 320, reduce the damping force when the second barrel section 320 and the first barrel member 220 rotate relative to each other, thereby making it more labor-saving to control the rotation of the rotating barrel member 500.
[0055] In one embodiment, the rear end surface of the second barrel section 320 is provided with a plurality of slots 321 in sequence forward along the circumference of the connecting hole 301, so as to separate the rear section of the second barrel section 320 into a plurality of arms 322, and the outer peripheral side wall of each arm 322 is provided with an elastic buckle 323. When the second barrel section 320 is plugged into the insertion hole 221, each elastic buckle 323 extends backward from the insertion hole 221 and is buckled and fixed at the rear end surface of the first barrel member 220. In this way, a claw structure can be formed at the rear section of the second barrel section 320, which does not hinder the smooth plugging of the second barrel section 320 in the insertion hole 221, and the rearward fastening force for the entire second barrel member 300 can be achieved through the mutual buckling between the elastic buckle 323 and the rear end surface of the first barrel member 220.
[0056] When the claw structure is formed at the rear section of the second barrel section 320 as described above, the structure of the socket 221 plugged therein can be further optimized. Specifically, for example, in the direction from front to back, the socket 221 is set to be a tapered hole with a gradually decreasing aperture. In this way, the front section of the socket 221 has a larger aperture, which makes it easier for the claw structure to be inserted. And during the plug-in process, the claw structure gradually shrinks and deforms under the action of the gradually increasing squeezing force caused by the gradually decreasing aperture. Finally, when plugged into the larger aperture of the rear section of the socket 221, the claw structure quickly deforms and resets, and the elastic buckle 323 is buckled on the rear end surface of the first barrel member 220, which is more helpful to improve the connection strength between the second barrel section 320 and the first barrel member 220.
[0057] Furthermore, the outer diameter of the second barrel section 320 at least adjacent to the barrel section of the claw structure may be gradually reduced in the direction from front to back, forming a conical surface adapted to the shape of the insertion hole 221, which is more conducive to the smooth insertion of the claw structure.
[0058] Then in one embodiment, since the outer peripheral side surface of the first barrel section 310 is partially convexly provided with a movable rib 311, when the second barrel section 320 is inserted and connected in the insertion hole 221, the rear end surface of the movable rib 311 abuts against the front end surface of the first barrel member 220, which can effectively limit the continued insertion of the second barrel section 320, and the movable rib 311 can realize the forward stop of the first barrel member 220. Combined with the structural design of the above-mentioned support arm 322 and elastic buckle 323, the second barrel member 300 can be firmly fixed on the first barrel member 220. On the other hand, when the rear end surface of the movable rib 311 abuts against the front end surface of the first barrel member 220, a relatively closed arc-shaped activity space can be formed between the movable rib 311, the front end surface of the first barrel member 220, the second stop surface 410 and the rotating barrel member 500. The activity space allows the stop rib 222 to move more stably therein.
[0059] It can be understood that after the assembly between the first cylinder 220 and the second cylinder 300 is completed, the elastic buckle 323 abuts against the rear end surface of the first cylinder 220; the rear end surface of the movable rib 311 of the first cylinder section 310 abuts against the front end surface of the first cylinder 220, so that the first cylinder 220 and the second cylinder 300 are mutually limited. Therefore, if the length distance between the rear end surface of the movable rib 311 in the second cylinder 300 and the buckling surface of the elastic buckle 323 is defined as H1, and the length distance between the front end surface of the first cylinder 220 and its rear end surface is H2, by adjusting the size relationship between H1 and H2, the size adjustment of the plug-in fastening force between the first cylinder 220 and the second cylinder 300 can be achieved, thereby achieving the best rotation performance and sealing performance. Specifically, when H1 is equal to H2, or even H1 is slightly smaller than H2, the fastening force is relatively increased, so that the sealing performance is enhanced, but the rotation between the first cylinder 220 and the second cylinder 300 is relatively laborious; on the contrary, when H1 is slightly larger than H2, the rotation between the first cylinder 220 and the second cylinder 300 is relatively labor-saving, but the fastening force may be relatively reduced, so that the sealing performance is weakened. In practical applications, the size relationship between H1 and H2 can be reasonably designed according to actual needs.
[0060] Furthermore, at least two movable ribs 311 are evenly spaced along the circumference of the second barrel section 320, and a stop rib 222 is correspondingly provided between every two adjacent movable ribs 311. It can be understood that the more movable ribs 311 are provided on the second barrel section 320, that is, the smaller the curvature of the arc-shaped movable space enclosed between every two adjacent movable ribs 311, the smaller the movable stroke of the stop rib 222 in the arc-shaped movable space, and the smaller the rotation angle range of the insertion component 100 relative to the external operating component 200. Conversely, the fewer movable ribs 311 are provided on the second barrel section 320, that is, the larger the curvature of the arc-shaped movable space enclosed between every two adjacent movable ribs 311, the larger the movable stroke of the stop rib 222 in the arc-shaped movable space, and the larger the rotation angle range of the insertion component 100 relative to the external operating component 200. Figures 1 to 9 In the structure shown, two movable ribs 311 are provided, and the two movable ribs 311 are symmetrical about the center of the second barrel section 320. The arc of the arc-shaped movable space enclosed by the two movable ribs 311 is approximately π, allowing the insertion component 100 to rotate 0° to 180° relative to the external operating component 200.
[0061] In view of the above, further, the extension length of the stop rib 222 in the front-to-back direction is not greater than the extension length of the movable rib 311 in the front-to-back direction. In this way, the stop rib 222 can be stopped laterally by two adjacent movable ribs 311 in the circumferential direction, but will not form a movable contact with the second stop surface 410, thereby avoiding friction damping and structural loss caused by friction with the second stop surface 410.
[0062] The second cylinder 300 is provided with a connection hole 301 in the front-to-back direction, and the third cylinder 400 is provided with a mounting hole 420 in the front-to-back direction. The mounting hole 420 is fixedly sleeved on the outside of the insertion component 100, so the diameter of the mounting hole 420 can be set equal to or slightly smaller than the outer diameter of the insertion component 100 at the corresponding position, so as to help form interference between the mounting hole 420 and the insertion component 100, and effectively prevent the insertion component 100 from rotating circumferentially relative to the mounting hole 420, that is, relative to the third cylinder 400. The diameter of the connection hole 301 can be set equal to or slightly larger than the outer diameter of the insertion component 100 at the corresponding position.
[0063] In addition, the third cylinder member 400 is fixedly sleeved on the outer side of at least the front section of the first cylinder section 310. Specifically, the third cylinder member 400 may be recessed at its rear end to form a countersink, and the countersink is fixedly sleeved on the front end of the first cylinder section 310. The aperture of the countersink may be set to be equal to or slightly smaller than the outer diameter of the first cylinder section 310 at the corresponding position, so as to facilitate interference between the countersink and the first cylinder section 310, and effectively prevent the second cylinder member 300 from rotating circumferentially relative to the third cylinder member 400. In this way, the insertion member 100, the third cylinder member 400 and the second cylinder member 300 can be relatively fixed at least in the rotation direction, and relative rotation between the insertion member 100, the third cylinder member 400 and the second cylinder member 300 can be avoided.
[0064] There are various structural solutions of the third cylinder member 400 and the second cylinder member 300 to achieve the above-mentioned purpose:
[0065] In one embodiment, the third cylinder member 400 and the second cylinder member 300 are integrally formed of a hard material. In this way, the third cylinder member 400 and the second cylinder member 300 are specifically manifested as a whole cylinder structure, and the relative fixation of the two can be achieved without the need for fixed sleeve operations, and the sealing performance of the two is also better when the two are integrally formed. In addition, the hard material helps to ensure the structural strength required by the third cylinder member 400 and the second cylinder member 300.
[0066] Alternatively, in one embodiment, the third cylinder member 400 and the second cylinder member 300 are separately formed and arranged, and the third cylinder member 400 is made of an elastic material, and the second cylinder member 300 is made of a hard material. The elastic material is specifically, for example, a rubber material, a silicone material, etc. It can realize the fixed sleeve connection between the third cylinder member 400 and the insertion member 100, and between the third cylinder member 400 and the second cylinder member 300 through its own elastic deformation.
[0067] In view of this embodiment, further, the movable rib 311 extends forward to form an extension rib 311b, and at least the front section of the extension rib 311b is set to be gradually reduced in height from the back to the front; the hole wall of the mounting hole 420 is penetrated with a slot 430 toward the back, the rear section of the third cylinder 400 is sleeved on the front section of the first cylinder section 310, and the slot 430 is inserted and connected with the extension rib 311b. In this way, the gradually reduced setting can form an inclined guide surface, which is conducive to the smooth sleeve connection between the third cylinder 400 made of elastic material and the second cylinder 300 made of hard material. The insertion connection of the slot 430 and the extension rib 311b can realize the circumferential stop of the third cylinder 400 and the second cylinder 300.
[0068] In addition, when the rotating cylinder 500 is sleeved on the outer side of the second cylinder 300, it can be further extended to be sleeved on the outer side of the first cylinder 220 at the same time, so that when the second cylinder 300 is inserted into position relative to the first cylinder 220 (that is, the elastic buckle 323 buckles and fixes the rear end surface of the first cylinder 220), the rotating cylinder 500 can be clamped and limited by the first stop surface 211 and the second stop surface 410 in the front and rear. Then in one embodiment, the side surface of the movable rib 311 is concavely formed to form a buckle groove 311a, and the inner cylinder wall of the rotating cylinder 500 is convexly provided with a clamping protrusion 510, which is buckled and connected with the buckle groove 311a. In this way, the rotating cylinder 500, the insertion component 100, the third cylinder 400 and the second cylinder 300 can be relatively fixed at least in the rotation direction, avoiding relative rotation between the rotating cylinder 500, the insertion component 100, the third cylinder 400 and the second cylinder 300. When the user applies external force in the rotation direction to the rotating cylinder 500 manually or by an electronically controlled device, the rotating cylinder 500, the inserting component 100, the third cylinder 400 and the second cylinder 300 synchronously rotate relative to the first cylinder 220 to achieve the purpose of rotation.
[0069] And / or in one embodiment, the outer surface of the rotating cylinder 500 is provided with an anti-skid structure 520. The specific form of the anti-skid structure 520 is not limited, and can be but not limited to various forms of concave-convex structures, sleeve anti-skid sleeves, etc., which helps to increase the connection strength between the hand and the rotating cylinder 500 when the user manually rotates the rotating cylinder 500, avoids slipping, etc., and helps to ensure smooth and safe surgical operations.
[0070] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. An endoscope rotation control mechanism, characterized in that: include: The external operating component comprises a main body and a first cylinder member protruding from the front end of the main body, the main body extends radially outward of the first cylinder member to form a first stop surface facing forward, the first cylinder member is integrally formed with at least a part of the shell plate of the main body, the first cylinder member is penetrated along the front-back direction with an insertion hole communicating with the inner cavity of the main body, and a part of the front end surface of the first cylinder member is protruding to form a stop rib; The second cylinder member is provided with a connecting hole in the front-to-back direction, the second cylinder member comprises a first cylinder section and a second cylinder section connected in sequence from front to back, a side surface of the first cylinder section is partially convexly provided with a movable rib extending in the front-to-back direction, and the second cylinder section is plugged into the plug hole to drive the rear end surface of the movable rib to abut against the front end surface of the first cylinder member; A third cylinder member is fixedly sleeved on the front section of the first cylinder section, and a second stop surface facing backward is formed on the radial outer side of the first cylinder section. The third cylinder member is provided with a mounting hole in the front-to-back direction. The third cylinder member is fixedly sleeved on the outer side of the insertion component through the mounting hole, and drives the rear section of the insertion component to extend into the inner cavity of the main body through the connecting hole. a rotating cylinder, fixedly sleeved on the outer side of the second cylinder, and clamped and limited between the first stop surface and the second stop surface; and, A sealing ring, the sealing ring is sleeved between the insertion hole and the second barrel section; Wherein, driven by an external force, the rotating cylinder drives the second cylinder, the third cylinder and the inserting component to rotate relative to the first cylinder, so that the stop rib can be movably adjusted in the direction of approaching and moving away from the movable rib.
2. The endoscope rotation control mechanism according to claim 1, characterized in that: The side surface of the movable rib is concavely provided with a buckle groove, the inner cylinder wall of the rotating cylinder is convexly provided with a clamping protrusion, and the clamping protrusion is buckled and connected with the buckle groove; and / or, The outer surface of the rotating cylinder is provided with an anti-slip structure.
3. The endoscope rotation control mechanism according to claim 1, characterized in that: The rear end surface of the second barrel section is provided with a plurality of grooves in sequence along the circumference of the connecting hole to separate the rear section of the second barrel section into a plurality of arms. The outer peripheral side wall of each arm is convexly provided to form an elastic buckle. When the second barrel section is plugged into the insertion hole, each elastic buckle extends backward from the insertion hole and is buckled and fixed on the rear end surface of the first barrel member.
4. The endoscope rotation control mechanism according to claim 1, characterized in that: The third cylinder member and the second cylinder member are made of a hard material in one piece.
5. The endoscope rotation control mechanism according to claim 1, characterized in that: The third cylinder member and the second cylinder member are separately formed and arranged, and the third cylinder member is made of elastic material, and the second cylinder member is made of hard material.
6. The endoscope rotation control mechanism according to claim 5, characterized in that: The second cylinder is made of a hard material, and the movable ribs extend forward to form extension ribs, and at least the front section of the extension ribs is convex and gradually decreases in height from the back to the front; A slot is formed through the hole wall of the mounting hole toward the rear, the rear section of the third cylinder is sleeved on the front section of the first cylinder, and the slot is inserted and connected with the extension rib.
7. The endoscope rotation control mechanism according to claim 1, characterized in that: At least two movable ribs are evenly spaced along the circumference of the second barrel section, and a stop rib is correspondingly arranged between every two adjacent movable ribs.
8. The endoscope rotation control mechanism according to claim 1, characterized in that: The extension length of the stop rib along the front-rear direction is not greater than the extension length of the movable rib along the front-rear direction.
9. The endoscope rotation control mechanism according to claim 1, characterized in that: At the joint between the two, the diameter of the insertion hole is not less than the outer diameter of the second barrel section.
10. The endoscope rotation control mechanism according to claim 1, characterized in that: The main body comprises a first shell plate and a second shell plate connected in sequence along the radial direction of the first cylinder, and the first shell plate and the second shell plate are detachably connected to jointly enclose and define an inner cavity; The first shell plate and the first cylinder are integrally formed, and at the connection between the two, the outer peripheral side wall of the first cylinder and / or the first shell plate is provided with a sealing groove, and the second shell plate is correspondingly provided with a sealing protrusion, and the sealing protrusion is sealingly connected to the sealing groove.
11. An endoscope, characterized in that: The invention comprises an insertion component and an endoscope rotation control mechanism as claimed in any one of claims 1 to 10.