Endoscope

Abstract

The utility model provides endoscope, the working cavity in endoscope head end structure has first opening, and the opening end surface of first opening is the inclined surface truncation in front end surface and head end structure side surface. This inclined design makes first opening present oblique distribution, specifically, the oblique strip opening, and is not the traditional perpendicular front end surface plane opening. Through this kind of oblique arrangement, can optimize the internal space of head end structure under the premise of keeping the outer diameter of head end structure unchanged, makes instrument outlet longitudinal extension, to provide more generous operating space for surgical instrument, realize the maximization of cavity space layout. Secondly, the smooth instrument export path is formed to the inclined instrument outlet, and the instrument can extend along the outlet inclined direction, reduces the insertion resistance, improves the operation flexibility of narrow channel in miniaturization endoscope. This embodiment can give consideration to endoscope head end structure miniaturization and high definition imaging demand.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an endoscope. Background Technology

[0002] As an important medical device, the endoscope is widely used in the examination of human cavities and minimally invasive surgery. The design of its tip structure directly affects the instrument's passability, imaging quality and manufacturing cost.

[0003] Most existing endoscopes use a cylindrical packaging design, such as ureteroscopes, to accommodate the imaging components and working channel. However, the existing design has the following problems: the cylindrical packaging has low space utilization, making it difficult to simultaneously accommodate large imaging components and a large working channel, resulting in an excessively large outer diameter of the tip, increasing patient discomfort, or sacrificing image quality due to space constraints.

[0004] Therefore, the relevant technologies struggle to achieve both instrument miniaturization and high-definition imaging requirements.

[0005] To address the aforementioned issues, there is an urgent need for an endoscope lens end structure that balances miniaturization with high-definition imaging requirements.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this utility model, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] In view of the problems in the prior art, the purpose of this utility model is to provide an endoscope that overcomes the difficulties of the prior art and can solve the technical problem that the existing endoscopes are unable to meet the requirements of high-definition imaging while achieving instrument miniaturization.

[0008] This disclosure provides an endoscope including: a head end structure having a radially spaced working cavity and a mounting cavity, the mounting cavity being used to mount an imaging component;

[0009] The working cavity has a first opening, and the mounting cavity has a second opening located on the front end face of the head end structure. The opening end face of the first opening is an inclined surface that is cut off from the front end face and the side face of the head end structure.

[0010] Optionally, the head end structure is provided with a partition structure located between the working chamber and the mounting chamber. The partition structure extends backward from the front end and is divided into a first section and a second section. The first section faces the first opening radially, and the second section forms the working chamber.

[0011] Optionally, an arc-shaped chamfer is formed between the front end face and the opening end face of the first opening.

[0012] Optionally, the opening end face of the first opening is an outward-facing shape.

[0013] Optionally, the open end face has an arc-shaped bottom surface located at the end of the first opening away from the front end face.

[0014] Optionally, the projection of the head end structure along the axial direction is a circular outline, and the projections of the front end face and the open end face along the axial direction are both located within the circular outline.

[0015] Optionally, the working cavity is divided into a first channel and a second channel along the axial direction. The first channel is closer to the front end face than the second channel, and the first opening is formed in the first channel. The inner diameter of the first channel is smaller than the inner diameter of the second channel.

[0016] The endoscope proposed in this disclosure has the following advantages:

[0017] The first opening of the working cavity has an inclined end face that is truncated from the front end face and the side of the head structure. This inclined design makes the first opening obliquely distributed, specifically an oblique strip-shaped opening, rather than a traditional planar opening perpendicular to the front end face. The inclined design causes the longitudinal profile of the first opening, which serves as the instrument outlet, to gradually extend from the upper edge to the lower edge of the front end face, forming a narrow and elongated structure. Through this inclined arrangement, firstly, the internal space of the head structure can be optimized while keeping the outer diameter of the head structure unchanged, allowing the instrument outlet to extend longitudinally, thereby providing more operating space for surgical instruments, while avoiding interference with the imaging components in the mounting cavity, maximizing the cavity space layout. Secondly, the inclined instrument outlet forms a smooth instrument exit path, allowing the instrument to extend along the inclined direction of the outlet, reducing insertion resistance and improving the operational flexibility of the narrow channels in the miniaturized endoscope.

[0018] Building upon this, the slight slope of the inclined outlet facilitates the smooth drainage of irrigation fluid or body fluids, reducing fluid retention or blockage, thereby ensuring unobstructed access to the device and improving clinical operational efficiency. Simultaneously, this inclined design optimizes the relative layout of the working chamber and the mounting chamber, achieving a compact and miniaturized tip structure, balancing ease of device operation with overall structural safety.

[0019] Therefore, through the above design, this embodiment can simultaneously solve the problems of low space utilization, limited instrument operation, and excessive outer diameter of existing cylindrical head end structures, while taking into account the miniaturization of the end-eye lens structure and the requirements for high-definition imaging.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0022] Figure 1 A perspective view of an endoscope provided by an embodiment of this disclosure is shown;

[0023] Figure 2 exhibit Figure 1 A three-dimensional view of the endoscope lens structure shown.

[0024] Figure 3 exhibit Figure 2 A tiling diagram of the endoscope lens structure shown;

[0025] Figure 4 exhibit Figure 2 The front view of the endoscope lens structure shown.

[0026] Label Explanation:

[0027] 100, Insertion component; 10, Insertion tube; 1, Head end structure; 1a, Working chamber; 1b, Mounting chamber; 2a, First opening; 11, Front end face; 12, Opening end face; 13, Side face; 14, Partition structure; 141, First section; 142, Second section; s1, Curved chamfer; 121, Curved bottom surface; 1a1, First section channel; 1a2, Second section channel; 2b, Second opening. Detailed Implementation

[0028] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0029] Furthermore, the accompanying drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0030] This disclosure provides an endoscope designed to address the problems of low space utilization in the end-cap structure of existing endoscopes and difficulty in simultaneously accommodating large-sized imaging components and working channels, thereby achieving instrument miniaturization while meeting the requirements of high-definition imaging.

[0031] Figure 1 A perspective view of the endoscope provided in the embodiments of this disclosure is shown, such as... Figure 1 As shown, the endoscope includes an insertion assembly 100, which includes an insertion tube 10 and a tip structure 1. The tip structure 1 is mounted to the insertion tube 10 and serves as the front end of the insertion assembly 100. The insertion assembly 100 is used for insertion into a human body cavity.

[0032] For example, Figure 1 The endoscope shown is a hysteroscope. Other types of endoscopes include ureteroscopes.

[0033] Figure 2 A perspective view of the endoscope lens end structure 1 provided in this embodiment is shown, such as... Figure 2 As shown, the head end structure 1 has a working cavity 1a and a mounting cavity 1b that are radially separated. The mounting cavity 1b is used to mount imaging components, such as optical imaging elements like CMOS image sensors and lens assemblies, to realize the imaging function of the endoscope. The working cavity 1a serves as a working channel, such as a channel for passing instruments, aspirating liquids, or injecting gases, thereby supporting minimally invasive surgery or examination procedures.

[0034] Specifically, the working cavity 1a has a first opening 2a, and the mounting cavity 1b has a second opening 2b located on the front end face 11 of the head-end structure 1. This second opening 2b allows the lens of the imaging assembly to be exposed towards the front end face 11, enabling imaging of the forward field of view. The opening end face 12 of the first opening 2a is an inclined surface that is truncated between the front end face 11 and the side face 13 of the head-end structure 1. This inclined design makes the first opening 2a of the working cavity 1a obliquely distributed, specifically an oblique strip-shaped opening, rather than a traditional planar opening perpendicular to the front end face 11, thereby optimizing the internal space layout of the head-end structure 1.

[0035] In this embodiment, the first opening 2a formed on the front end face 11 of the head end structure 1a in the working cavity 1a is designed with an inclination, that is, the opening end face 12 forms a certain angle with the front end face 11, so that the longitudinal contour of the first opening 2a, which serves as the instrument outlet, gradually extends from the upper edge to the lower edge of the front end face 11 to form a narrow and elongated structure. Through this inclination arrangement, firstly, the internal space of the head end structure 1 can be optimized while keeping the outer diameter of the head end structure 1 unchanged, so that the working cavity outlet (first opening 2a) is extended longitudinally, thereby providing more operating space for surgical instruments, while avoiding interference with the imaging components in the mounting cavity 1b, and maximizing the cavity space layout. Secondly, the inclination outlet (first opening 2a) forms a smooth instrument exit path, and the instrument can extend along the inclination direction of the outlet, reducing insertion resistance and improving the operational flexibility of the narrow channel in the miniaturized endoscope.

[0036] Building upon this, the slight slope of the inclined outlet facilitates the smooth drainage of irrigation fluid or body fluids, reducing fluid retention or blockage, thereby ensuring unobstructed access to the device and improving clinical operational efficiency. Simultaneously, this inclined design optimizes the relative layout of the working chamber and the mounting chamber, achieving a compact and miniaturized tip structure, balancing ease of device operation with overall structural safety.

[0037] Therefore, through the above design, this embodiment can simultaneously solve the problems of low space utilization, limited instrument operation, and excessive outer diameter of existing cylindrical head end structures, while taking into account the miniaturization of the end-eye lens structure and the requirements for high-definition imaging.

[0038] In the corresponding implementation, by adjusting the tilt angle and aspect ratio of the first opening 2a, it can adapt to different sizes of instruments and operational needs, enhance the flexibility and adaptability of the cavity design, and thus take into account the operating space, smooth channel and compact tip under limited outer diameter, providing efficient and reliable operating conditions for clinical minimally invasive surgery.

[0039] In one implementation, such as Figure 3 As shown, the head end structure 1 is provided with a partition structure 14, which is located between the working cavity 1a and the mounting cavity 1b. This partition structure 14 is used to spatially isolate the imaging component area from the working channel area, thereby preventing the optical component from being interfered with by surgical instruments or liquids.

[0040] The partition structure 14 extends rearward from the front end face 11 into a first segment 141 and a second segment 142. The first segment 141 extends radially toward the first opening 2a and defines the opening boundary of the working cavity 1a. The second segment 142 forms the main body of the working cavity 1a, thereby achieving a compact arrangement of the imaging component mounting channel and the working channel within a limited space, further improving the space utilization and assembly stability of the head end structure 1.

[0041] In this disclosure, such as Figure 3 As shown, an arc-shaped chamfer s1 is formed between the front end face 11 and the opening end face 12 of the first opening 2a.

[0042] The curved chamfer s1 is used to smoothly transition the junction between the front end face 11 and the inclined opening end face 12. On the one hand, it reduces the frictional resistance when the head end structure 1 is inserted into the human body cavity. On the other hand, it forms a smooth connection between the imaging field of view (second opening 2b) and the instrument inlet / outlet (first opening 2a), which helps to improve the stability of operation and reduce the risk of injury.

[0043] In this disclosure, such as Figure 2 and Figure 4 As shown, the opening end face 12 of the first opening 2a is designed to be everted. The everted opening structure can form an outwardly expanding transition area at the first opening 2a, making the movement of instruments smoother when entering and exiting the working chamber 1a and reducing friction with the chamber wall. At the same time, this structure makes the liquid or gas outflow path smoother, which helps to improve the fluid discharge efficiency during surgical operations.

[0044] Optionally, the opening end face 12 has an arc-shaped bottom surface 121 located at the end of the first opening 2a away from the front end face 11. The arc-shaped bottom surface 121 makes the first opening 2a have a curved transition structure in the depth direction, which can provide a soft contact characteristic during the insertion or withdrawal of the endoscope and prevent scratching of the inner wall of the cavity. At the same time, the reflective properties of the arc-shaped bottom surface 121 help to avoid stray light in the imaging area and improve image contrast.

[0045] In an optional embodiment, the projection of the head end structure 1 along the axial direction is a circular outline, and the projections of the front end face 11 and the opening end face 12 along the axial direction are both located within this circular outline. This circular outline design ensures that the head end maintains a smooth and continuous geometric shape, achieving good external symmetry while realizing the internal multi-cavity arrangement, which helps the endoscope's passability and directional stability in narrow cavities.

[0046] In this disclosure, such as Figure 3 As shown, the working chamber 1a is divided axially into a first channel 1a1 and a second channel 1a2. The first channel 1a1 is located near the front end face 11 and forms the instrument inlet / outlet; the second channel 1a2 extends rearward to the insertion tube 10 (e.g., ...). Figure 1 (As shown) is used to connect with subsequent transport paths.

[0047] The width of the first channel 1a1 is smaller than the width of the second channel 1a2, thus forming a convergent structure at the junction of the channels, making the area of ​​the first opening 2a more compact, which is conducive to achieving the misalignment of the instrument entrance / exit and the imaging optical axis within a limited outer diameter.

[0048] Meanwhile, the convergent structure can create a fluid guiding effect, improve suction and flushing efficiency, prevent fluid from forming turbulence at the front end, and improve field of view clarity.

[0049] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. An endoscope, characterized in that, include: The head end structure (1) has a working cavity (1a) and a mounting cavity (1b) spaced apart radially, the mounting cavity (1b) being used to mount the imaging assembly; The working cavity (1a) has a first opening (2a), and the mounting cavity (1b) has a second opening (2b) located on the front end face (11) of the head end structure (1). The opening end face (12) of the first opening (2a) is an inclined surface that is cut off from the front end face (11) and the side face (13) of the head end structure (1).

2. The endoscope according to claim 1, characterized in that, The head end structure (1) is provided with a partition structure (14) located between the working cavity (1a) and the mounting cavity (1b). The partition structure (14) extends rearward from the front end face (11) and is divided into a first segment (141) and a second segment (142). The first segment (141) faces the first opening (2a) along the radial direction, and the second segment (142) forms the working cavity (1a).

3. The endoscope according to claim 1, characterized in that, An arc-shaped chamfer (s1) is formed between the front end face (11) and the opening end face (12) of the first opening (2a).

4. The endoscope according to claim 1, characterized in that, The opening end face (12) of the first opening (2a) is outwardly flared.

5. The endoscope according to claim 4, characterized in that, The opening end face (12) has an arc-shaped bottom face (121), which is located at the end of the first opening (2a) away from the front end face (11).

6. The endoscope according to claim 1, characterized in that, The projection of the head end structure (1) along the axial direction is a circular outline, and the projections of the front end face (11) and the opening end face (12) along the axial direction are both located within the circular outline.

7. The endoscope according to claim 1, characterized in that, The working cavity (1a) is divided into a first channel (1a1) and a second channel (1a2) along the axial direction. The first channel (1a1) is closer to the front end face (11) than the second channel (1a2). A first opening (2a) is formed in the first channel (1a1). The inner diameter of the first channel (1a1) is smaller than the inner diameter of the second channel (1a2).

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