Endoscope

Abstract

The utility model discloses an endoscope. The endoscope comprises an endoscope body, an insertion part and a front end assembly, the front end assembly comprises a connecting piece, an angle adjusting structure and a rotary positioning structure, and the angle adjusting structure comprises a rotating piece rotationally connected with the connecting piece; the insertion part is connected to the front end of the angle adjusting structure; the rotating positioning structure is used for forming rotating resistance to the rotating piece; the rotating piece is provided with a first working position and a second working position, and when the rotating piece moves from the first working position to the second working position under the action of external force, the rotating piece rotates under the action of the rotating positioning structure. The driving force needed when the rotating piece is separated from the first working position is larger than the driving force needed when the rotating piece moves from the first working position to the second working position. Small-angle rotation detection of the insertion portion can be achieved, a doctor can obviously sense the position of the rotating piece through hand feeling during operation, repeated observation and correction through eyes are not needed, and operation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an endoscope. Background Art

[0002] The rotation of the insertion part of the current mainstream electronic endoscope is driven by the operation knob to drive the insertion part connecting shaft to rotate. In order to allow doctors to know the angle of the insertion part rotation from the neutral position at any time, a protrusion is generally set on the knob and the grip handle. When the two protrusions overlap, the insertion part rotates back to the neutral position.

[0003] In actual operation, doctors sometimes need to rotate the insertion part at a very small angle, and they will directly rotate the scope body to drive the insertion part to achieve this. At this time, if the resistance of the insertion part in the human body is large, the scope body will rotate, but the insertion part itself will not rotate. In addition, although it is possible to confirm whether the insertion part has returned to the neutral position by touching the raised position of the knob, this position is not significantly different from other positions, so doctors usually subconsciously use their eyes to confirm it; and because the resistance of the insertion part in the human body is inconsistent, excessive force will also rush through the neutral position, requiring repeated operations, which is not convenient for doctors to quickly confirm the neutral position, affecting the efficiency of detection and treatment. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is that in the setting method of the traditional endoscope, when the resistance in the human body is too large, the scope body will rotate but the insertion part will not rotate, making it impossible to achieve small-angle rotation, and making it impossible for the doctor to quickly confirm whether the insertion part is reset to the neutral position during operation, affecting the detection and treatment efficiency.

[0005] In order to solve the above technical problems, the utility model provides an endoscope, including an endoscope body and an insertion portion, and also includes: a front end component, the front end component includes:

[0006] A connecting piece, fixedly connected to the endoscope body;

[0007] An angle adjustment structure, comprising a rotating member rotatably connected to the connecting member;

[0008] The insertion part is connected to the front end of the angle adjustment structure, and the rotating member rotates under the action of an external force, driving the insertion part to rotate relative to the connecting member;

[0009] A rotation positioning structure, used to form a rotation resistance for the rotating member;

[0010] The rotating member rotates relative to the connecting member to have at least a first working position and a second working position, wherein when the rotating member is moved from the first working position toward the second working position by an external force, under the action of the rotation positioning structure, the driving force required for the rotating member to disengage from the first working position is greater than the driving force required for the rotating member to move from the first working position toward the second working position.

[0011] Optionally, the rotation positioning structure is arranged between surfaces of the rotating member and the connecting member that rotate relative to each other.

[0012] Optionally, the angle adjustment structure also includes a transmission member connected to the rotating member, the rotating member is arranged on the outside of the connecting member, the transmission member is arranged on the inside of the connecting member, the insertion portion is connected to the transmission member, the rotation of the rotating member drives the transmission member to rotate together, and the rotation positioning structure is arranged between the surfaces of the transmission member and the connecting member that rotate relative to each other.

[0013] Optionally, the angle adjustment structure also includes an inlay connected to the rotating member, and a transmission member connected to the inlay, the inlay is arranged on the inner side of the rotating member and located at the front end of the connecting member, the transmission member is connected to the inlay and located on the inner side of the connecting member, the rotation of the rotating member drives the inlay to rotate together, and the transmission member is driven to rotate under the action of the inlay, and the rotation positioning structure is arranged between the surfaces of the inlay and the connecting member that rotate relative to each other.

[0014] Optionally, the rotational positioning structure includes a positioning elastic member provided on the angle adjustment structure, and a first positioning surface provided on the connecting member, wherein, when the rotating member is in the first working position, surface-to-surface contact is formed between the positioning elastic member and the first positioning surface, and after the rotating member is separated from the first working position, the positioning elastic member and the first positioning surface are separated from each other, and are in surface-line-surface contact with the connecting member.

[0015] Optionally, the shape of the first positioning surface matches the shape of the positioning elastic member.

[0016] Optionally, the rotational positioning structure includes a first abutment portion provided on the angle adjustment structure, and a first positioning surface and a second positioning surface provided on the connecting member, the first positioning surface and the second positioning surface are arranged along the circumference of the rotating member, and when the rotating member is in the first working position, the first abutment portion and the first positioning surface are in contact, wherein the friction coefficient of the first positioning surface is greater than the friction coefficient of the second positioning surface.

[0017] Optionally, the connecting member includes a connecting sleeve, the rotating member includes a rotating cylinder, one end of the rotating cylinder is rotatably sleeved on the outside of the connecting sleeve, and the rotation positioning structure is arranged between the outer circumference of the connecting sleeve and the inner circumference of the rotating cylinder.

[0018] Optionally, the rotation positioning structure includes:

[0019] A positioning elastic member, which is disposed on the inner wall of the rotating cylinder and has elastic deformation;

[0020] A first positioning surface is provided on the outer peripheral side of the connecting sleeve and is adapted to be arranged with the positioning elastic member;

[0021] When the rotating member is in the first working position, the positioning elastic member and the first positioning surface are arranged in a close contact to form surface-to-surface contact. When the rotating member is out of the first working position, the positioning elastic member and the outer peripheral side wall of the connecting sleeve are abutted to form line-to-surface contact.

[0022] Optionally, the positioning elastic member is configured as a spring sheet; and / or, a avoidance groove is provided on the inner side wall of the rotating cylinder, and the avoidance groove is configured corresponding to the positioning elastic member, so that the positioning elastic member can be elastically bent and deformed toward the direction of the avoidance groove under the abutting action of the connecting sleeve.

[0023] Optionally, the rotational positioning structure also includes an elastic buffer component, which is arranged in the avoidance groove. When the positioning elastic component is deformed, the elastic buffer component can be deformed under the abutment of the positioning elastic component. When the rotating component is in the first working position, the positioning elastic component can be restored under the action of the deformation recovery force of the elastic buffer component.

[0024] Optionally, the outer peripheral side of the connecting sleeve is partially recessed inward and is planar to form the first positioning surface; the shape of the positioning elastic member is adapted to the shape of the first positioning surface and is parallel to the direction of the tangent of the peripheral side wall of the connecting sleeve.

[0025] Optionally, the rotating member rotates relative to the connecting member to have a plurality of working positions, and a plurality of sets of the rotating positioning structures are provided, and the plurality of sets of the rotating positioning structures and the plurality of the working positions are arranged in a one-to-one correspondence.

[0026] The utility model also provides an endoscope, comprising the front end component mentioned above.

[0027] The technical solution provided by the utility model has the following advantages:

[0028] The front end component provided by the utility model includes a connecting piece, an angle adjustment structure, an insertion part and a rotation positioning structure, wherein the connecting piece is suitable for being connected and fixed with the endoscope body, the insertion part can be extended into the patient's body to obtain image information inside the patient's body, the angle adjustment structure connects the connecting piece and the insertion part, and the rotating piece is rotated by an external force, thereby driving the insertion part to rotate, thereby adjusting the angle of image acquisition; the position of the rotating piece can be monitored by the rotation positioning structure, specifically, under the action of the rotation positioning structure, the driving force received by the rotating piece when it leaves the first working position is greater than the driving force received by the rotating piece during the movement from the first working position toward the second working position. The first working position can be set to a detection angle that the doctor often needs to use during the operation, such as the neutral position of the endoscope. When the rotating member is subjected to an external force and has been rotated from other positions to the first working position and continues to be subjected to the same magnitude of the first force, since the driving force required for the rotating member to leave the first working position is greater, therefore, when the rotating member is subjected to the same magnitude of the first force, the rotating member cannot continue to rotate, thereby locking the rotating member at the first working position. When operating, the doctor can clearly feel that the rotating member is in the predetermined position by feel, without the need to repeatedly observe and correct with the eyes. Obviously, the operation is more convenient and the detection efficiency is higher. Moreover, since the rotation positioning structure can also provide a certain locking force on the rotating member, the rotating member will not easily leave the first working position, so that the insertion part is not easy to rotate easily. Therefore, even when the resistance in the human body is relatively large, when the mirror body rotates, the insertion part can also rotate together under the action of the rotation positioning structure, which is conducive to the detection of small rotation angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A schematic structural diagram of an embodiment of an endoscope provided by the utility model;

[0031] Figure 2 for Figure 1 A schematic structural diagram of the front end assembly of the endoscope;

[0032] Figure 3 for Figure 2 A schematic diagram of an exploded structure of a front end assembly of the endoscope;

[0033] Figure 4 for Figure 2 A schematic cross-sectional structure diagram of a front end assembly of the endoscope;

[0034] Figure 5 for Figure 2 Another cross-sectional structural schematic diagram of the front end component of the endoscope.

[0035] Description of reference numerals:

[0036] 1000-endoscope; 100-front end assembly; 1-connecting piece; 11-connecting sleeve; 2-angle adjustment structure; 21-rotating piece; 211-rotating cylinder; 212-avoidance groove; 22-transmission piece; 23-insert; 3-insertion part; 4-rotational positioning structure; 41-positioning elastic piece; 411-spring; 42-first positioning surface; 200-endoscope body; 201-outer shell. DETAILED DESCRIPTION

[0037] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0039] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0040] The utility model provides an endoscope 1000, such as Figure 1 As shown in the figure, the endoscope 1000 includes an endoscope body 200, an insertion part 3, and a front end component connecting the endoscope body 200 and the insertion part 3. When in use, the endoscope 1000 can be inserted into the patient's body through the insertion part 3 to obtain image information of the affected part or treat the affected part, and under the action of the front end component 100, the insertion part 3 can be driven to rotate relative to the endoscope body 200, so as to adjust the image acquisition direction or the treatment direction, making detection and treatment more convenient.

[0041] Specifically, see Figures 1 to 3 The front end assembly 100 includes a connecting member 1, an angle adjustment structure 2, and a rotation positioning structure 4, wherein the connecting member 1 is fixedly connected to the endoscope body 200; the angle adjustment structure 2 includes a rotating member 21 rotatably connected to the connecting member 1; the insertion portion 3 is connected to the front end of the angle adjustment structure 2, and the rotating member 21 rotates under the action of an external force, driving the insertion portion 3 to rotate relative to the connecting member 1; the rotation positioning structure 4 is located between the angle adjustment structure 2 and the connecting member 1; the rotating member 21 rotates relative to the connecting member 1 to have at least a first working position and a second working position, wherein, when the rotating member 21 moves from the first working position toward the second working position under the action of an external force, under the action of the rotation positioning structure 4, the driving force required for the rotating member 21 to leave the first working position is greater than the driving force required for the rotating member 21 to move from the first working position toward the second working position.

[0042] In this embodiment, the connecting member 1 is suitable for being connected and fixed with the endoscope body 200, the insertion part 3 can be extended into the patient's body to obtain the image information in the patient's body, the angle adjustment structure 2 connects the connecting member 1 and the insertion part 3, the rotating member 21 can be rotated manually or driven to rotate by a driving mechanism, preferably, the rotating member 21 is rotated manually, the structure is simpler, and it is easier for medical staff to operate. Specifically, the rotating member 21 is rotated by external force, thereby driving the insertion part 3 to rotate, so as to adjust the angle of image acquisition at the front end of the insertion part 3 or the angle of instrument treatment. And further, the position of the rotating member 21 can be monitored by the rotation positioning structure 4, specifically, under the action of the rotation positioning structure 4, the driving force (i.e., the rotation force of the medical staff) received by the rotating member 21 when it leaves the first working position is greater than the driving force received by the rotating member 21 during the movement from the first working position to the second working position. Among them, the first working position can be set to the detection angle that the doctor often needs to use during the operation, such as the neutral position of the endoscope 1000, and the second working position represents the remaining rotation angle positions, such as a position offset by 30°, 45° or 60° from the neutral position. When the rotating member 21 is rotated from other positions to the first working position by external force and is continuously subjected to the first force of the same magnitude, since the driving force required for the rotating member 21 to leave the first working position is greater, when the rotating member 21 is continuously subjected to the first force of the same magnitude, the rotating member 21 cannot continue to rotate, thereby locking the rotating member 21 at the first working position. When operating, the doctor can clearly feel that the rotating member 21 is in the predetermined first working position by hand without the need for repeated observation and correction by eyes, which is obviously more convenient to operate and has higher detection efficiency. Moreover, since the rotation positioning structure 4 can also provide a certain locking force on the rotating member 21, the rotating member 21 will not easily leave the first working position, thereby making it difficult for the insertion part 3 to rotate easily. Therefore, even when the resistance in the human body is relatively large, when the endoscope body 200 rotates, the insertion part 3 can also rotate together under the action of the rotation positioning structure 4, thereby facilitating the detection of small rotation angles.

[0043] It should be noted that when the front-end assembly 100 is working normally, the end close to the patient is defined as the front end, and the end facing away from the patient is defined as the rear end. The insertion portion 3 of the front-end assembly 100 is located at the front end to be inserted into the patient's body, and the connecting member 1 is located at the rear end to be suitable for connecting with the endoscope body 200. The description of the orientation in the present utility model shall be referred to as such unless otherwise specified.

[0044] The shape of the connecting member 1 is not specifically limited. Figure 3As shown in the figure, the connecting member 1 includes a connecting sleeve 11, which is generally cylindrical so as to be more compatible with the endoscope body 200 and make the structure more compact. One end of the connecting sleeve 11 along its axial direction is suitable for being connected and fixed with the endoscope body 200, and the other end of the connecting sleeve 11 can extend from the endoscope body 200 to be connected with the angle adjustment structure 2.

[0045] Moreover, in one embodiment, the angle adjustment structure 2 also includes a transmission member 22, the rotating member 21 includes a rotating cylinder 211, the transmission member 22 and the rotating cylinder 211 are both roughly cylindrical, and the connecting sleeve 11, the rotating cylinder 211 and the transmission member 22 are all coaxially arranged, so that the structure of the entire front end assembly 100 is more compact and the volume of the entire front end assembly 100 is smaller. The rotating cylinder 211 is sleeved on the outer peripheral side of the connecting sleeve 11 and is not in direct contact with the connecting sleeve 11. The transmission member 22 is sleeved on the inner peripheral side of the connecting sleeve 11 and can rotate relative to the connecting sleeve 11. The rotating cylinder 211 and the transmission member 22 are connected. The rotation of the rotating cylinder 211 drives the transmission member 22 to rotate, so as to drive the insertion part 3 connected to the transmission member 22 to rotate. It should be noted that the insertion part 3 includes a tubular structure and an image acquisition device arranged at the front end of the tubular structure. A plurality of delivery channels can be arranged on the tubular structure. The image acquisition device can acquire image information in the patient's body. The plurality of delivery channels can be used for the insertion of treatment instruments and the delivery of treatment fluids (such as saline) respectively, so as to detect and treat the affected part. The image acquisition angle of the image acquisition device or the instrument treatment angle can be adjusted by the rotation of the insertion part 3.

[0046] Further, in one embodiment, the rotating cylinder 211 and the transmission member 22 may not be in direct contact. Specifically, the angle adjustment structure 2 further includes an insert 23, which is roughly annular, wherein the insert 23 is fixedly sleeved on the inner circumference of the rotating cylinder 211, and the insert 23, the rotating cylinder 211, the transmission member 22 and the connecting sleeve 11 are all axially arranged, so that the centering is better after the rotating cylinder 211 rotates and is not easily offset. One end of the transmission member 22 is rotatably sleeved on the inner side of the connecting member 1, and the other end of the transmission member 22 is sleeved on the inner side of the insert 23, and at least part of the insert 23 is stopped along the circumference of the rotating member 21. The rotation of the rotating cylinder 211 drives the insert 23 to rotate, and the transmission member 22 is driven to rotate under the action of the stop of the insert 23 and the transmission member 22, so as to drive the insertion part 3 to rotate.

[0047] It is understandable that in order to make the feel of the rotating member 21 in the first working position obviously different from that in other positions, it is sufficient to make the contact feel of the rotating member 21 in the first working position different from that in other working positions during rotation.

[0048] Specifically, in one embodiment, the rotation positioning structure 4 can be disposed between the surfaces of the transmission member 22 and the connecting member 1 that rotate relatively. The rotation positioning structure 4 makes it easier for the rotating member 21 to return to the first working position, but not easy to be separated from the first working position, so that medical staff can clearly sense the position of the rotating member 21 when operating the rotating member 21.

[0049] In another embodiment, the rotation positioning structure 4 can be arranged between the insert 23 and the connecting member 1, and the insert 23 is located at the front end of the connecting member 1. By arranging the rotation positioning structure 4 on two surfaces of the insert 23 and the connecting member 1 that are axially opposite to each other, during the rotation process, the rotation positioning structure 4 is used to make it difficult for the rotating member 21 to rotate out of the first working position after it rotates to the first working position, and a greater force needs to be applied, so that medical staff can clearly sense the position of the rotating member 21 when operating the rotating member 21.

[0050] Preferably, the rotation positioning structure 4 is arranged between the surfaces of the rotating member 21 and the connecting member 1 that rotate relatively, so that the rotation positioning structure 4 is closer to the rotating member 21, and the medical staff is also closer to the rotation positioning structure 4 when rotating the rotating member 21, so that the perception is stronger and the feel is better.

[0051] Specifically, the rotation positioning structure 4 is arranged between the outer circumference of the connecting sleeve 11 and the inner circumference of the rotating cylinder 211. When the medical staff is operating, they apply a rotational force to the outer side of the rotating member 21, thereby driving the rotating member 21 to rotate. The resistance applied by the rotation positioning structure 4 can be directly transmitted to the rotating member 21, so that the formed resistance is more obvious, so that the operator can perceive the position more accurately.

[0052] Preferably, combined Figure 4 and Figure 5As shown, the rotation positioning structure 4 includes a positioning elastic member 41 and a first positioning surface 42, wherein the positioning elastic member 41 is arranged on the inner side wall of the rotating cylinder 211 and has elastic deformation; the first positioning surface 42 is arranged on the outer peripheral side of the connecting sleeve 11 and is adapted to the positioning elastic member 41; when the rotating member 21 is in the first working position, the positioning elastic member 41 and the first positioning surface 42 are arranged in a close relationship to form a surface-to-surface contact, and when the rotating member 21 is out of the first working position, the positioning elastic member 41 and the outer peripheral side wall of the connecting sleeve 11 are abutted to form a line-to-surface contact. Thus, the friction force is increased by the surface-to-surface contact between the positioning elastic member 41 and the first positioning surface 42, so that the force when rotating the rotating member 21 out of the first working position is greater than the force required for the rotating member 21 to rotate in other working positions. On the one hand, medical staff can clearly feel that the rotating member 21 is in the first working position. On the other hand, when the resistance in the patient's body is large, the endoscope body 200 is rotated so that the insertion part 3 can better rotate together with the endoscope body 200.

[0053] It is understandable that the positioning elastic member 41 and the rotating member 21 can be integrally arranged or detachably arranged. Preferably, the positioning elastic member 41 is arranged as a spring sheet 411, and the spring sheet 411 is made of metal and is arranged in a flat sheet shape. The spring sheet 411 is roughly in the shape of a long strip, and a slot is arranged on the inner side wall of the rotating cylinder 211. The two ends of the spring sheet 411 are inserted into the slot, so that the middle part of the spring sheet 411 can be elastically bent and deformed, and when in the first working position, the middle part of the spring sheet 411 is just in contact with the first positioning surface 42.

[0054] Moreover, if Figure 4 As shown in the figure, a avoidance groove 212 is also provided on the inner wall of the rotating cylinder 211, and the avoidance groove 212 is arranged corresponding to the positioning elastic member 41, so that the positioning elastic member 41 can be elastically bent and deformed toward the avoidance groove 212 under the impact of the connecting sleeve 11, so as to have enough deformation space.

[0055] Furthermore, the rotation positioning structure 4 further includes an elastic buffer (not shown in the drawings), which is disposed in the avoidance groove 212. When the positioning elastic member 41 is deformed, the elastic buffer may be deformed under the abutment of the positioning elastic member 41, and when the rotating member 21 is restored to the first working position, the positioning elastic member 41 may be restored under the deformation recovery force of the elastic buffer, and at the same time, the elastic buffer may improve the durability of the spring 411, and avoid the spring 411 from being deformed for too long and unable to be reset. The elastic buffer may be configured as elastic foam, sponge, etc.

[0056] Further, the first positioning surface 42 may be integrally provided with the connecting sleeve 11, or the first positioning surface 42 is formed on a component connected to the connecting sleeve 11. Preferably, the first positioning surface 42 is a part of the outer peripheral side wall of the connecting sleeve 11. Specifically, the outer peripheral side of the connecting sleeve 11 is partially recessed inward and is planar to form the first positioning surface 42; the shape of the positioning elastic member 41 is adapted to the shape of the first positioning surface 42, and is parallel to the direction of the tangent of the peripheral side wall of the connecting sleeve 11. When the rotating member 21 is in the first working position, the first positioning surface 42 of the connecting sleeve 11 is in contact with the spring 411. When the medical staff needs to rotate the rotating member 21 to any other angle, a relatively large force can be applied to rotate the spring 411 to separate from the first positioning surface 42, and the spring 411 is in contact with the arc outer peripheral side wall of the connecting sleeve 11. Compared with the friction force of the surface contact between the spring 411 and the first positioning surface 42, it is obvious that the friction force between the spring 411 and the arc outer peripheral side wall of the connecting sleeve 11 is smaller, so that the rotation force applied to the rotating cylinder 211 can be smaller. Moreover, when the rotating member 21 returns to the first working position again, a larger force needs to be applied to move the rotating member 21 out of the first working position. When the medical staff is operating, they can clearly feel the difference between the first working position and other positions without repeated observation and confirmation, which can improve the detection efficiency.

[0057] It can be understood that the implementation of the rotation positioning structure 4 is not limited to the above one. In another embodiment, the rotation positioning structure 4 may include a first abutment portion provided on the angle adjustment structure 2, and a first positioning surface 42 and a second positioning surface provided on the connecting member 1, wherein the first positioning surface 42 and the second positioning surface are arranged along the circumference of the rotating member 21, and when the rotating member 21 is in the first working position, the first abutment portion and the first positioning surface 42 are in contact, wherein the friction coefficient of the first positioning surface 42 is greater than the friction coefficient of the second positioning surface. When the rotating member 21 rotates relative to the connecting member 1, the first abutment portion can be in frictional contact with the first positioning surface 42 and the second positioning surface respectively. Since the friction coefficient of the first positioning surface 42 is greater, the friction resistance formed when the first abutment portion contacts the first positioning surface 42 is greater. Therefore, when the rotating member 21 rotates to the first working position, a greater force needs to be applied to make the rotating member 21 rotate out of the first working position, thereby prompting the operator of the position of the rotating member 21.

[0058] The first abutting portion includes a convex bump protruding from the inner side of the rotating member 21 . The convex bump can be integrally provided with the rotating member 21 or can be detachably provided on the rotating member 21 .

[0059] Specifically, when the first positioning surface 42 and the second positioning surface are formed on the peripheral side surface of the connecting member 1, stickers of different materials can be attached to the peripheral side surface of the connecting member 1 to respectively form the first positioning surface 42 and the second positioning surface, or concave-convex structures with different degrees of roughness can be set on the peripheral side surface of the connecting member 1 to form the first positioning surface 42 and the second positioning surface.

[0060] The implementation of the front end assembly 100 includes but is not limited to the above. In other embodiments, the specific implementation of the above-mentioned rotation positioning structure 4 and the setting position of the rotation positioning structure 4 can be implemented in combination with each other. For example, when the rotation positioning structure 4 is arranged between the transmission member 22 and the connecting member 1, the rotation positioning structure 4 may include a first abutment portion arranged on the outer peripheral side of the transmission member 22, and a first positioning surface 42 and a second positioning surface arranged on the inner side of the connecting member 1, and the transmission member 22 is driven to rotate by the rotating member 21, so that the first abutment portion can be in frictional contact with the first positioning surface 42 and the second positioning surface respectively.

[0061] Moreover, according to the operation requirements, the rotating member 21 may also be provided with a plurality of working positions, each of which is a position frequently used by the doctor, so that the accurate operating angle can be quickly found. Specifically, when the rotating member 21 rotates relative to the connecting member 1 to have a plurality of working positions, the rotating positioning structure 4 is provided with a plurality of sets, and the plurality of sets of the rotating positioning structures 4 and the plurality of the working positions are arranged one-to-one. Each working position can be set by the plurality of sets of the rotating positioning structures 4, which is more convenient for the operator to perform blind operation without repeated correction. Of course, the plurality of rotating positioning structures 4 may also be arranged differently, so that different working positions can be better distinguished. For example, when the rotating member 21 has a first working position, a second working position, and a third working position, the friction coefficient of the surface of the connecting member 1 corresponding to each working position may be arranged differently, so that when entering each working position, different forces are required to operate the rotating member 21 to distinguish each working position.

[0062] Alternatively, the first working position is set as a neutral position, and the second working position can be entered after rotating clockwise for a certain angle, and the third working position can be entered after rotating counterclockwise for a certain angle. Moreover, each working position can also be locked and restricted by the rotation positioning structure 4, so that the operation feel is better.

[0063] In addition, the front end assembly 100 further includes a sealing member, which is sleeved on the outer peripheral side of the transmission member 22 and abuts against the connecting member 1. The sealing member forms a seal between the connecting sleeve 11 and the transmission member 22 to prevent foreign matter from entering the inner side of the transmission member 22 and entering the delivery channel of the insertion portion 3. Preferably, a plurality of sealing members may be provided, and the plurality of sealing members may be arranged at intervals along the axial direction of the transmission member 22 to ensure a better sealing effect. Preferably, the sealing member may be provided as an O-ring.

[0064] For the endoscope body 200, Figure 1 As shown in the figure, the endoscope body 200 includes an operating part and an outer shell 201 connected to the operating part. The endoscope body 200 is connected and fixed to the connecting member 1 of the front end assembly 100. The connecting member 1 is fixed to the front end of the outer shell 201 and at least partially extends from the outer shell 201. The rotating member 21 is connected to the outer shell 201.

[0065] Moreover, a reference portion is provided on the endoscope body 200, and a comparison portion is provided on the front end assembly 100. By comparing the reference portion with the comparison portion, the position of the rotating member 21 can be assisted in determining. Specifically, a comparison protrusion is provided on the outer circumference of the outer shell 201, and the comparison protrusion is located at the front end of the outer shell 201. A reference protrusion is provided on the outer circumference of the rotating cylinder 211. When the reference protrusion rotates to be opposite to the comparison protrusion, it can also indicate that the rotating member 21 is in the first working position, such as the neutral position. The reference protrusion and the comparison protrusion can further assist in positioning with the naked eye.

[0066] In the utility model, the front end component 100 makes it easier to adjust the detection angle or treatment angle of the endoscope 1000 when detecting or treating an affected area, and the angular position of the insertion portion 3 can be quickly determined, making detection or treatment more convenient and faster.

[0067] Obviously, the above described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, ordinary technicians in this field can make other different forms of changes or modifications without creative work, which should fall within the scope of protection of the utility model.

Claims

1. An endoscope, comprising an endoscope body and an insertion portion, characterized in that: Also includes: A front-end component, the front-end component comprising: A connecting piece, fixedly connected to the endoscope body; An angle adjustment structure, comprising a rotating member rotatably connected to the connecting member; The insertion part is connected to the front end of the angle adjustment structure, and the rotating member rotates under the action of an external force, driving the insertion part to rotate relative to the connecting member; A rotation positioning structure, used to form a rotation resistance for the rotating member; The rotating member rotates relative to the connecting member to have at least a first working position and a second working position, wherein when the rotating member is moved from the first working position toward the second working position by an external force, under the action of the rotation positioning structure, the driving force required for the rotating member to disengage from the first working position is greater than the driving force required for the rotating member to move from the first working position toward the second working position.

2. The endoscope according to claim 1, wherein: The rotation positioning structure is arranged between the surfaces of the rotating member and the connecting member that rotate relatively.

3. The endoscope according to claim 1, wherein: The angle adjustment structure also includes a transmission member connected to the rotating member, the rotating member is arranged on the outside of the connecting member, the transmission member is arranged on the inside of the connecting member, the insertion portion is connected to the transmission member, the rotation of the rotating member drives the transmission member to rotate together, and the rotation positioning structure is arranged between the surfaces of the transmission member and the connecting member that rotate relative to each other.

4. The endoscope according to claim 1, wherein: The angle adjustment structure also includes an inlay connected to the rotating member, and a transmission member connected to the inlay, the inlay is arranged on the inner side of the rotating member and is located at the front end of the connecting member, the transmission member is connected to the inlay and is located on the inner side of the connecting member, the rotation of the rotating member drives the inlay to rotate together, and the inlay drives the transmission member to rotate, and the rotation positioning structure is arranged between the surfaces of the inlay and the connecting member that rotate relative to each other.

5. The endoscope according to claim 1, wherein: The rotational positioning structure includes a positioning elastic member arranged on the angle adjustment structure, and a first positioning surface arranged on the connecting member, wherein, when the rotating member is in the first working position, a surface-to-surface contact is formed between the positioning elastic member and the first positioning surface, and after the rotating member is separated from the first working position, the positioning elastic member and the first positioning surface are separated from each other, and are in surface-line-surface contact with the connecting member.

6. The endoscope according to claim 5, characterized in that The shape of the first positioning surface is matched with the shape of the positioning elastic member.

7. The endoscope according to claim 1, wherein: The rotational positioning structure includes a first abutment portion provided on the angle adjustment structure, and a first positioning surface and a second positioning surface provided on the connecting member, wherein the first positioning surface and the second positioning surface are arranged along the circumference of the rotating member, and when the rotating member is in the first working position, the first abutment portion and the first positioning surface are in contact with each other, wherein the friction coefficient of the first positioning surface is greater than the friction coefficient of the second positioning surface.

8. The endoscope according to claim 1, wherein: The connecting member includes a connecting sleeve, the rotating member includes a rotating cylinder, one end of the rotating cylinder is rotatably sleeved on the outside of the connecting sleeve, and the rotating positioning structure is arranged between the outer peripheral side of the connecting sleeve and the inner peripheral side of the rotating cylinder.

9. The endoscope according to claim 8, characterized in that The rotation positioning structure comprises: A positioning elastic member, which is disposed on the inner wall of the rotating cylinder and has elastic deformation; A first positioning surface is provided on the outer peripheral side of the connecting sleeve and is adapted to be arranged with the positioning elastic member; When the rotating member is in the first working position, the positioning elastic member and the first positioning surface are arranged in a close contact to form surface-to-surface contact. When the rotating member is out of the first working position, the positioning elastic member and the outer peripheral side wall of the connecting sleeve are abutted to form line-to-surface contact.

10. The endoscope according to claim 9, characterized in that The positioning elastic member is configured as a spring sheet; and / or, an avoidance groove is provided on the inner side wall of the rotating cylinder, and the avoidance groove is configured corresponding to the positioning elastic member, so that the positioning elastic member can be elastically bent and deformed toward the avoidance groove under the abutting action of the connecting sleeve.

11. The endoscope according to claim 10, characterized in that The rotational positioning structure also includes an elastic buffer component, which is arranged in the avoidance groove. When the positioning elastic component is deformed, the elastic buffer component can be deformed under the abutment of the positioning elastic component. When the rotating component is in the first working position, the positioning elastic component can be restored under the action of the deformation recovery force of the elastic buffer component.

12. The endoscope according to claim 9, characterized in that The outer peripheral side of the connecting sleeve is partially recessed inward and is planar to form the first positioning surface; the shape of the positioning elastic member is adapted to the shape of the first positioning surface and is parallel to the direction of the tangent of the peripheral side wall of the connecting sleeve.

13. The endoscope according to claim 1, wherein: The rotating member rotates relative to the connecting member to have a plurality of working positions. The rotating positioning structure is provided with a plurality of sets, and the plurality of sets of the rotating positioning structure and the plurality of the working positions are arranged in a one-to-one correspondence.

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