Front end seat of endoscope and endoscope

Abstract

The present invention provides a front end seat of an endoscope and an endoscope, and relates to the technical field of medical devices. The front end seat includes a front end housing, which is provided with a camera module; a nozzle, which is provided in the front end housing and located on one side of the camera module; a fluid main path, which is provided in the front end housing and is used to provide a flushing liquid to the nozzle, and a jet flow channel connected to the fluid main path is provided in the nozzle, and the jet port of the jet flow channel is inclined toward the distal end face of the camera module, and the cross section of the jet flow channel gradually shrinks into a linear shape from the end close to the main flow path to the jet port end; the nozzle also has a V-shaped opening, and the V-shaped opening has an upper inclined wall surface and a lower inclined wall surface, and the jet port of the third jet section is located on the upper inclined wall surface, and the lower inclined wall surface and the jet port of the third jet section are staggered so that the flushing liquid sprayed from the jet port avoids the lower inclined wall surface and then sprays to the distal end face of the camera module. Compared with the prior art, the present invention has the advantage of improving the blurred imaging of the camera module.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a front end seat of an endoscope and an endoscope. Background Art

[0002] An endoscope is a commonly used medical device, which generally consists of a bendable part, a light source part, and a lens part. When used, the endoscope enters the patient's body through a natural orifice of the human body or an incision formed by surgery. After the endoscope is introduced into the organ to be inspected, the doctor can directly observe the lesions in the relevant parts.

[0003] The endoscope includes an operating handle and an insertion part. During surgery, the doctor inserts the insertion part into the human body through the human cavity. The insertion part is equipped with a camera module and an instrument tube. The camera module is electrically connected to the camera host. By controlling the operating handle, the active bending section at the front end of the insertion part can be pulled by a traction rope to achieve a bending action, thereby changing the direction of the front end of the insertion part, allowing the camera module to present the irradiated image on the camera host.

[0004] The inventors have found in many operations that after the insertion portion is inserted into a human body cavity, the image presented by the camera module on the camera host often appears blurred, thereby affecting the doctor's observation. Summary of the invention

[0005] In order to solve the problem of blurred imaging of the camera module, the present application provides a front end seat of an endoscope and an endoscope.

[0006] In the first aspect, the present application provides a front end seat of an endoscope, which is applied to the insertion part of the endoscope, including: a front end shell, the front end shell is provided with a camera module; a nozzle, which is arranged in the front end shell and is located on one side of the camera module; a fluid main path, which is arranged in the front end shell and is used to provide a flushing liquid to the nozzle, and the nozzle is provided with an injection flow channel connected to the fluid main path, wherein the injection flow channel has a first nozzle section, a second nozzle section and a third nozzle section connected in sequence, the proximal port of the first nozzle section is connected to the fluid main path, and the inner diameter of the first nozzle section gradually decreases from the side close to the fluid main path to the side close to the second nozzle section; from the proximal end to the distal end of the front end shell. , the extension path of the second spray section gradually changes from axial extension to radial extension; the distal end of the third spray section is a jet port, and the jet port of the third spray section faces the distal end surface of the camera module, and the third spray section is configured as follows: from the side close to the second spray section to the direction away from the side of the second spray section, the cross-sectional shape of the third spray section gradually changes from a circle to a flat long strip; the nozzle also has a V-shaped opening, and the V-shaped opening has an upper inclined wall surface and a lower inclined wall surface, the jet port of the third spray section is located on the upper inclined wall surface, and the lower inclined wall surface and the jet port of the third spray section are staggered, so that the flushing liquid sprayed from the jet port avoids the lower inclined wall surface and then is sprayed to the distal end surface of the camera module.

[0007] Preferably, the inclination angle of the third spray section close to the lower inclined wall surface is consistent with the inclination angle of the lower inclined wall surface.

[0008] Preferably, the entry height of the flushing liquid entering the third spray section from the second spray section is greater than the spraying height of the flushing liquid sprayed from the spray port of the third spray section.

[0009] Preferably, the front end shell is provided with a movable cavity, and the nozzle is movably arranged in the movable cavity.

[0010] Preferably, an elastic portion is provided between the nozzle and the movable cavity, and the elastic portion enables the nozzle to always remain in the movable cavity in a natural state; when there is flowing flushing liquid in the main fluid path, the nozzle moves out of the movable cavity under the action of the flushing liquid and sprays the flushing liquid to the distal surface of the camera module; when the flushing liquid in the main fluid path stops flowing, the nozzle is reset to the movable cavity under the action of the elastic portion.

[0011] Preferably, the front end shell is recessed at the distal end surface of the camera module to form a mounting groove, and a light-transmitting end cover is rotatably provided in the mounting groove.

[0012] Preferably, the outer peripheral wall of the light-transmitting end cover is evenly distributed with a plurality of water wheel blades, an annular gap is formed between the outer peripheral wall of the light-transmitting end cover and the inner peripheral wall of the mounting groove, and the water wheel blades extend into the annular gap;

[0013] The main fluid path has a fluid branch path, a distal end of the fluid branch path is communicated with the annular gap, and an extension path of the distal end of the fluid branch path is tangent to the contour of the annular gap.

[0014] Preferably, the outer peripheral wall of the light-transmitting end cover is also provided with a limiting portion, the limiting portion is located on the side of the water wheel blade close to the distal end, and the inner side wall of the mounting groove is provided with an annular embedding groove for the limiting portion to be embedded; an outflow gap is provided between the limiting portion and the annular embedding groove, so that the flushing liquid entering the annular gap is discharged to the distal end of the front end shell through the outflow gap.

[0015] Preferably, the distal end surface of the light-transmitting end cap is configured as a refractive surface.

[0016] In a second aspect, the present application also provides an endoscope, characterized in that it comprises an operating handle, an insertion portion and a front end seat as described in the above scheme, wherein the operating handle is arranged on the proximal side of the insertion portion, and the front end seat is arranged on the distal side of the insertion portion.

[0017] The present invention has the following advantages and beneficial effects:

[0018] The nozzle is set on one side of the front shell, which significantly improves the spray efficiency of the flushing liquid. The design of the nozzle is combined with the configuration of the main fluid path, so that the flushing liquid can be directly supplied to the injection channel to form an efficient liquid flow channel. This design ensures that the flushing liquid can quickly and effectively reach the injection port, ensuring the timely cleaning of the distal end surface of the camera module. By optimizing the positioning of the nozzle, the nozzle can quickly remove body fluids and impurities that may be attached to the surface of the camera module without interfering with the imaging of the camera module;

[0019] Regarding the structure of the jet channel, the segmented design of the jet channel further enhances the jet effect of the flushing liquid. The design of the jet channel enables the flushing liquid to obtain a significant increase in flow rate during the flow process. The high-flow rate liquid can generate a stronger impact force during the flushing process, effectively removing pollutants on the far end surface of the camera module and ensuring clear imaging;

[0020] The synergy between the light-transmitting end cap and the flushing liquid significantly improves the image clarity. In the design, the flushing liquid is effectively sprayed onto the surface of the light-transmitting end cap through the nozzle to remove the dirt and body fluids attached to it, so that the light-transmitting end cap remains clean. This clean state ensures that the light is not disturbed when passing through the light-transmitting end cap, thereby reducing the possibility of blurred imaging. At the same time, the rotation design of the light-transmitting end cap allows it to be fully flushed at all positions, further improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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 these drawings without paying creative work.

[0022] Figure 1 is a schematic structural diagram of a front end housing of some embodiments of the present application;

[0023] Figure 2 A partial cross-sectional view of the front end housing of some embodiments of the present application Figure 1 ;

[0024] Figure 3 is a schematic diagram of the structure of the nozzle of some embodiments of the present application;

[0025] Figure 4 is a partial cross-sectional view of a nozzle of some embodiments of the present application;

[0026] Figure 5 is a schematic diagram of the outline of the injection flow channel of some embodiments of the present application;

[0027] Figure 6 A partial cross-sectional view of the front end housing of some embodiments of the present application Figure 2 ;

[0028] Figure 7 yes Figure 6 A magnified view of part A in FIG.

[0029] Figure 8 is a schematic diagram of the structure of a light-transmitting end cap of some embodiments of the present application;

[0030] Fig. 9 It is a schematic diagram of the structure of an endoscope in some embodiments of the present application.

[0031] The markings in the figure are:

[0032] 100, front end housing; 110, camera module; 120, movable cavity; 130, mounting groove; 131, annular gap; 132, annular embedding groove; 133, outflow gap; 200, nozzle; 210, injection channel; 211, first injection section; 212, second injection section; 213, third injection section; 2131, injection port; 220, V-shaped opening; 221, upper inclined wall; 222, lower inclined wall; 300, main fluid path; 310, branch fluid path; 400, elastic part; 500, light-transmitting end cover; 510, water wheel blade; 520, limit part; 600, operating handle; 700, insertion part. DETAILED DESCRIPTION

[0033] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0034] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0035] In the related art, an endoscope is an important medical device widely used in the medical field, mainly used for direct visual inspection of the patient's internal organs. It is usually composed of a bendable part, a light source part and a lens part. When in use, the endoscope can enter the body through the natural orifices of the human body or surgical incisions. During the operation, the doctor inserts the insertion part of the endoscope through the human body cavity, thereby guiding it to the organ to be inspected. Once the endoscope successfully enters, the doctor can directly observe the lesions of the relevant parts for diagnosis and treatment.

[0036] The endoscope consists of two parts: an operating handle and an insertion part. During the operation, the doctor inserts the insertion part into the body through the human cavity with the help of the operating handle. The insertion part is equipped with a camera module and an instrument tube, and the camera module is electrically connected to the camera host. The doctor can control the operating handle and use the traction rope to pull the active bending section at the front end of the insertion part to achieve the bending of the insertion part and change the direction of its front end so that the camera module can effectively capture the irradiated image and transmit it to the camera host for display.

[0037] However, in many actual operations, the inventors noticed a significant problem, that is, when the insertion part is successfully inserted into the human body cavity, the image transmitted by the camera module to the camera host is often blurred. This phenomenon seriously affects the doctor's observation and judgment of the lesion during the operation, which may have a negative impact on the patient's treatment effect. The blurriness of the front end of the camera module is mainly due to the body fluids adhering to its surface during the operation. The presence of these body fluids makes it impossible for the camera module to clearly capture the image of the lesion, affecting the doctor's vision clarity and the accuracy of judgment. Therefore, although the endoscope has high flexibility and adaptability, the reduction in its image quality has become a major hidden danger in medical operations.

[0038] This technical problem not only frequently occurs during the use of endoscopes, but also has a direct negative impact on doctors' surgical efficiency and patients' treatment outcomes. Blurred images make it difficult for doctors to accurately determine the location of lesions during surgery, which may lead to misdiagnosis or missed diagnosis. In addition, when doctors perform complex surgeries, they often need to make quick decisions based on images. Unclear images undoubtedly increase the risk of surgery and may even prolong the operation time, affecting the patient's recovery.

[0039] In summary, the current technical challenges faced by endoscopes in practical applications are mainly concentrated on the problem of blurred images in the camera module. The emergence of this problem is not only due to the limitations of equipment design, but also closely related to the inevitable physiological factors during the operation. Therefore, it is urgent to improve the clarity of endoscopic images based on existing technologies, thereby enhancing the doctor's observation ability and surgical safety. This technological innovation can not only improve the performance of medical devices, but also play a vital role in the treatment of patients.

[0040] Based on this, the present application proposes a front end seat of an endoscope.

[0041] Please refer to Figure 1 to Figure 9 In some embodiments, the front end seat includes a front end shell 100, a nozzle 200 and a fluid main path 300. The front end shell 100 is provided with a camera module 110. Exemplarily, a mounting hole is provided on the front end shell 100, and the camera module 110 is embedded in the mounting hole. Furthermore, the camera module 110 is electrically connected to the camera host through a wire provided in the insertion portion 700, so that the image captured by the camera module 110 at the far end of the front end structure can be projected on the display screen of the camera host, so as to facilitate the doctor's observation of the diseased tissue in the human cavity.

[0042] At the same time, refer to Figure 2 , Figure 3The nozzle 200 is disposed in the front housing 100 and is located on one side of the camera module 110. The fluid main path 300 is disposed in the front housing 100 and is used to provide a flushing liquid to the nozzle 200. The nozzle 200 is provided with a jet flow channel 210 connected to the fluid main path 300. Figure 2 , Fig. 9 The main fluid path 300 extends to the handle through the insertion part 700, and extends to the outside of the handle through the instrument tube on the handle, so that the water supply mechanism is connected to the main fluid path 300, and the flushing liquid is pumped into the main fluid path 300 through the water supply mechanism, and finally sprayed out from the nozzle 200. Exemplarily, the main fluid path 300 is configured as a tube body, which can normally allow the flushing liquid to flow in the insertion part 700 to the front housing 100. Further, the flushing liquid can be configured as clean water, disinfectant water or other medical cleaning liquids.

[0043] Exemplary, combined Figure 3 to Figure 5 The jet flow channel 210 has a first spray section 211, a second spray section 212 and a third spray section 213 which are connected in sequence. The proximal end of the first spray section 211 is connected to the fluid main path 300. The inner diameter of the first spray section 211 gradually decreases from the side close to the fluid main path 300 to the side close to the second spray section 212. In this way, when the flushing liquid enters the first spray section 211 from the fluid main path 300, the flow rate of the flushing liquid will gradually shrink, thereby increasing the flow rate of the flushing liquid after passing through the first spray section 211, thereby increasing the impact force of the flushing liquid when it is sprayed from the nozzle 200, and improving the flushing effect of the body fluid on the surface of the camera module 110.

[0044] At the same time, from the proximal end to the distal end of the front end shell 100, the extension path of the second spray segment 212 gradually changes from axial extension to radial extension. Exemplarily, the second spray segment 212 is an equal-diameter tube body and the second spray segment 212 turns smoothly, so that the flushing liquid can maintain a low energy loss when moving in the second spray segment 212, so that the flow rate of the flushing liquid when passing through the second spray segment 212 can be maintained to a certain extent. Furthermore, the distal end of the third spray segment 213 is a jet port 2131, and the jet port 2131 of the third spray segment 213 faces the distal end surface of the camera module 110. The third spray segment 213 is configured such that, from the side close to the second spray segment 212 to the direction away from the side of the second spray segment 212, the cross-sectional shape of the third spray segment 213 gradually changes from a circle to a flat strip. In this way, the flushing liquid can further compress the passing volume of the flushing liquid during its movement in the third spray section 213, and the flushing liquid can adaptively increase its flow rate when the passing volume is compressed, so that the flushing liquid finally has a greater impact force when it is ejected from the injection port 2131 of the third spray section 213, thereby further improving the flushing effect on the camera module 110.

[0045] Exemplarily, the nozzle 200 also has a V-shaped opening 220, which has an upper inclined wall 221 and a lower inclined wall 222. The injection port 2131 of the third injection section 213 is located on the upper inclined wall 221, and the lower inclined wall 222 and the injection port 2131 of the third injection section 213 are staggered so that the flushing liquid sprayed from the injection port 2131 avoids the lower inclined wall 222 and is sprayed to the distal end surface of the camera module 110.

[0046] On this basis, the nozzle 200 is arranged on one side of the front end housing 100, which significantly improves the injection efficiency of the flushing liquid. The design of the nozzle 200 is combined with the configuration of the fluid main path 300, so that the flushing liquid can be directly supplied to the injection channel 210 to form an efficient liquid flow channel. This design ensures that the flushing liquid can quickly and effectively reach the injection port 2131, ensuring the timely cleaning of the distal end surface of the camera module 110. By optimizing the positioning of the nozzle 200, the nozzle 200 can quickly remove body fluids and impurities that may be attached to the surface of the camera module 110 without interfering with the imaging of the camera module 110.

[0047] Regarding the structure of the jet channel 210, the segmented design of the jet channel 210 further enhances the jetting effect of the flushing liquid. The gradually reduced inner diameter design of the first spray section 211 enables the flushing liquid to obtain a significant flow rate increase during the flow process. The high-flow rate liquid can generate a stronger impact force during the flushing process, effectively remove pollutants on the far end surface of the camera module 110, and ensure clear imaging.

[0048] The structure of the second spray section 212 changes from axial to radial extension, so that the sprayed fluid can cover the distal end surface of the camera module 110 from the nozzle 200 at a wider angle. This design can ensure that the sprayed flushing liquid acts on the surface to be cleaned with a larger area, effectively preventing the generation of a cleaning blind area. In addition, this structure can also improve the dispersion of the sprayed fluid, so that the liquid can be distributed in a more uniform manner when contacting the surface, thereby enhancing the cleaning effect.

[0049] The injection port 2131 of the third injection section 213 faces the distal end of the camera module 110. Combined with the change in the shape of the injection port 2131, from a round shape to a flat strip, the coverage efficiency of the injection liquid is further improved. The optimized design of the injection port 2131 enables the injected liquid to form a wider injection surface, thereby improving the cleaning ability of the flushing liquid on the camera module 110. This innovation ensures that the cleaning of the camera module 110 can remain efficient even in a more complex surgical environment, thereby ensuring the stability of the image quality.

[0050] The V-shaped opening 220 of the nozzle 200 plays an important role in the overall structure. The upper inclined wall 221 and the lower inclined wall 222 ensure that the flushing liquid sprayed from the injection port 2131 can effectively avoid the lower inclined wall 222 when flushing the distal end of the camera module 110, thereby ensuring that the liquid directly hits the surface to be cleaned. This design not only improves the flushing effect, but also reduces the possible backflow of the liquid during the spraying process, ensuring that the liquid can directly act on the cleaning needs of the camera module 110.

[0051] In summary, by finely designing the various components of the front seat, an efficient flushing system is formed at the front seat of the endoscope. The stability of the front housing 100, the efficient spraying of the nozzle 200, the optimized design of the jet channel 210, and the ingenious configuration of the V-shaped opening 220 enable the endoscope to effectively clean the distal surface of the camera module 110 during surgery, significantly improving the imaging quality. This series of technical effects provides a more reliable guarantee for the clinical application of endoscopes.

[0052] In some embodiments, in combination Figure 2 to Figure 4 , the inclination angle of the third spray section 213 close to the lower inclined wall surface 222 is consistent with the inclination angle of the lower inclined wall surface 222. In this way, the inclination angle of the third spray section 213 is kept consistent with the lower inclined wall surface 222, so that the fluid flow path of the nozzle 200 and the injection channel 210 can be efficiently configured in the same space. This design reduces space waste and optimizes the internal structure layout, so that the entire front end seat is more compact in design, that is, after the length of the third spray section 213 is arranged obliquely / biasedly in the nozzle 200, the axial length of the nozzle 200 can be effectively shortened, so that the nozzle 200 can further reduce the design size and is more suitable for the front end insertion part of the endoscope. Especially in medical devices such as endoscopes, the control of the equipment volume is crucial. This design allows the equipment to achieve the cleaning function without increasing too much volume, making medical operations more flexible.

[0053] Furthermore, by tilting the third spray section 213 near the lower inclined wall 222, a larger space can be reserved near the V-shaped opening 220 of the nozzle 200, so that the V-shaped opening 220 can be normally opened on the side wall of the nozzle 200, greatly improving the space utilization of the nozzle 200.

[0054] In addition, this design also facilitates the layout of pipelines in complex spaces. By combining the third spray section 213 with the lower inclined wall 222, the designer can more flexibly adjust the relative position of the nozzle 200 and the main fluid path 300, reducing the requirements for the external space of the equipment. This compact design is particularly important in environments with limited space such as operating rooms. It can effectively reduce the size of the equipment while improving the convenience of operation. Finally, the design with consistent inclination angles enhances the overall aesthetics, making the front end structure of the endoscope more visually coordinated. This structural beauty not only meets the design requirements of medical devices.

[0055] In some embodiments, in combination Figure 3~Figure 5 , the entry height of the flushing liquid entering the third spray section 213 from the second spray section 212 is greater than the ejection height of the flushing liquid ejected from the ejection port 2131 of the third spray section 213. Exemplarily, the "height" here refers to the straight-line distance from the camera module 110 in the axial direction of the front end housing 100. Such a configuration ensures that the flushing liquid has a higher initial position when entering the third spray section 213, thereby increasing the potential energy of the liquid. After entering the third spray section 213, the flushing liquid can be ejected to the distal surface of the camera module 110 at a higher speed through the action of gravity, thereby enhancing the impact force of the liquid on dirt and body fluids. This design effectively avoids the loss of flow rate caused by gravity and friction during the liquid spraying process, thereby improving the effectiveness of cleaning.

[0056] Secondly, since the height of the injection port 2131 is lower than the entry height of the flushing liquid, the flushing liquid can form a certain concentrated flow after entering the third injection section 213. This concentrated flow allows the injected flushing liquid to be more accurately sprayed onto the surface of the camera module 110, ensuring the uniformity and effectiveness of the flushing coverage. This design improves the flushing effect, making it easier to remove attached dirt and body fluids from the surface of the camera module 110, thereby ensuring image clarity and imaging quality.

[0057] In addition, the higher height of the flushing liquid also reduces the probability of bubble formation near the injection port 2131. When the flushing liquid is injected into the camera module 110 at a higher speed, it can effectively disperse potential bubbles, which to some extent prevents the bubbles from affecting the imaging quality. This is crucial for the performance of medical equipment in actual operation, because the presence of bubbles may cause image distortion or blur.

[0058] In some embodiments, reference Figure 6 , Figure 7, the front end housing 100 is provided with a movable cavity 120, and the nozzle 200 is movably arranged in the movable cavity 120. Exemplarily, an elastic part 400 is provided between the nozzle 200 and the movable cavity 120, and the elastic part 400 keeps the nozzle 200 in the movable cavity 120 in a natural state. In the case where there is a flowing flushing liquid in the main fluid path 300, the nozzle 200 moves out of the movable cavity 120 under the action of the flushing liquid, and sprays the flushing liquid to the distal end surface of the camera module 110; in the case where the flushing liquid in the main fluid path 300 stops flowing, the nozzle 200 is reset to the movable cavity 120 under the action of the elastic part 400. Further, the length direction of the movable cavity 120 is parallel to the radial direction of the front end housing 100, and one end opening of the movable cavity 120 penetrates to the distal end of the front end housing 100.

[0059] The movable cavity 120 can realize the hidden design of the nozzle 200, so as to effectively prevent external contamination. During the use of the endoscope, the nozzle 200 may come into contact with body fluids and other biological materials. If the nozzle 200 is exposed to the outside, it is easy to cause contamination. This design reduces its contact with the external environment by storing the nozzle 200 in the movable cavity 120 when not in use, thereby reducing the risk of cross infection and improving the safety and reliability of the medical device. Secondly, the setting of the elastic part 400 enables the nozzle 200 to automatically move out and spray the flushing liquid when the flushing liquid flows, and automatically reset when the flushing liquid stops flowing. This design realizes the intelligent management of the nozzle 200 and improves the automation level of the equipment. In actual application, when flushing is required, the flow of the flushing liquid can immediately drive the nozzle 200 to move outward, and the flushing operation is completed quickly and effectively without the need for additional manual operation. This not only improves the doctor's work efficiency, but also reduces the errors that may be caused by manual operation.

[0060] In addition, the elastic reset design of the nozzle 200 makes the device highly adaptable and reliable. Under different operating conditions, the nozzle 200 can automatically adjust its position according to the flow of the flushing liquid. This adaptive ability enables the device to operate stably in a complex medical environment, ensuring that the flushing liquid is always sprayed onto the distal surface of the camera module 110 at an appropriate angle and force, thereby improving the cleaning effect and imaging quality.

[0061] Exemplarily, the elastic part is a spring, and a step surface is provided near the spring in the movable channel 120, the spring is sleeved on the fluid main path 300 near the nozzle 200, and one end of the spring is connected to the nozzle 200, and the other end is connected to the step surface of the movable channel 120, so that the spring can apply elastic thrust or tension to the nozzle 200 in the radial direction of the movable channel 120. Of course, in the present application, when the spring is in a natural state, the spring does not apply thrust to the nozzle 200, and the nozzle 200 is stored in the movable channel 120 under the tension of the spring.

[0062] In some embodiments, Figure 1 , Figure 2 As shown, the front end housing 100 is concave at the distal end surface of the camera module 110 to form a mounting groove 130, and a light-transmitting end cap 500 is rotatably arranged in the mounting groove 130. Exemplarily, the injection port 2131 of the third injection section 213 is inclined toward the distal end surface of the light-transmitting end cap 500. Further, in combination with Figure 6 , Figure 7 and Figure 8 The outer peripheral wall of the light-transmitting end cover 500 is evenly distributed with a plurality of water wheel blades 510, and an annular gap 131 is formed between the outer peripheral wall of the light-transmitting end cover 500 and the inner peripheral wall of the mounting groove 130, and the water wheel blades 510 extend into the annular gap 131. At the same time, the fluid main path 300 has a fluid branch path 310, and the distal end of the fluid branch path 310 is connected to the annular gap 131, and the extension path of the distal end of the fluid branch path 310 is tangent to the contour of the annular gap 131.

[0063] Exemplarily, in order to increase the stability of the light-transmitting end cap 500 in the mounting groove 130, the outer shape of the light-transmitting end cap 500 is set to be stepped. Similarly, the mounting groove 130 is also a stepped groove adapted to the shape of the light-transmitting end cap 500. Therefore, the corresponding annular gap 131 is also a stepped groove.

[0064] On this basis, the design of the light-transmitting end cap 500 effectively prevents body fluids from directly adhering to the front end surface of the camera module 110. Since the endoscope often comes into contact with biological materials such as body fluids and blood during medical operations, the residues of these materials may seriously affect the imaging quality of the camera module 110. By installing the light-transmitting end cap 500 at the front end of the camera module 110, the direct contact between body fluids and the camera module 110 can be isolated to a certain extent, thereby reducing the frequency and complexity of cleaning. This design improves the maintenance convenience of the endoscope and extends the service life of the camera module 110. Secondly, the outer peripheral wall of the light-transmitting end cap 500 is evenly distributed with a plurality of water wheel blades 510. When the flushing liquid enters the annular gap 131 through the main fluid path 300, the kinetic energy of the fluid drives the water wheel blades 510 to rotate. A major advantage of this design is that through the rotation of the water wheel blades 510, the light-transmitting end cap 500 can produce continuous movement under the action of the flushing liquid. This movement allows the flushing liquid to not only be concentrated at a certain fixed position for cleaning, but also to cover various areas of the light-transmitting end cover 500, ensuring that each position can be fully flushed.

[0065] Specifically, when the flushing liquid enters the main fluid path 300 of the front seat, the power generated by the flow of the liquid directly acts on the water wheel blade 510, causing it to rotate. The rotation of the water wheel blade 510 drives the rotation of the transparent end cover 500, so that the flushing liquid can be evenly distributed in different parts of the transparent end cover 500, thereby improving the overall cleaning efficiency. This design can effectively avoid cleaning dead corners caused by the stationary flushing liquid, ensuring that the camera module 110 always maintains a clear imaging effect.

[0066] In some embodiments, Figure 6 , Figure 7 As shown, the outer peripheral wall of the light-transmitting end cover 500 is further provided with a limiting portion 520, which is located on the side of the water wheel blade 510 close to the distal end, and the inner side wall of the mounting groove 130 is provided with an annular embedding groove 132 for the limiting portion 520 to be embedded. Exemplarily, the limiting portion 520 is in the shape of an annular shape, and the inner diameter of the inner circle formed by the limiting portion 520 is smaller than the outer diameter of the light-transmitting end cover 500, so that the light-transmitting end cover 500 can be effectively blocked. Furthermore, the position of the limiting portion 520 is closer to the distal opening of the mounting groove 130 than the water wheel blade 510, so that the flushing liquid can first contact with the flushing liquid and then flow out from the annular embedding groove 132.

[0067] At the same time, an outflow gap 133 is defined between the limiting portion 520 and the annular embedding groove 132 , so that the flushing liquid entering the annular gap 131 is discharged to the distal end of the front end housing 100 through the outflow gap 133 .

[0068] On this basis, the setting of the limiter 520 can effectively prevent the light-transmitting end cap 500 from being displaced or falling off due to the impact force of the liquid during the flushing process. The limiter 520 is embedded in the annular groove 132, so that the light-transmitting end cap 500 forms a stable connection with the front housing 100 when in use. This connection not only ensures the fixed position of the light-transmitting end cap 500, but also avoids any unnecessary displacement caused by the interference of the water flow during the flushing process, thereby ensuring that the camera module 110 is always in an ideal observation position.

[0069] Secondly, the design of the outflow gap 133 provides a good channel for the flow of the flushing liquid. While the flushing liquid enters the proximal side of the light-transmitting end cover 500 through the annular gap 131 and contacts the water wheel blades 510, it can be quickly discharged to the distal end of the front end housing 100 through the outflow gap 133. The beneficial effect of this design is that it can effectively control the distribution and flow of the flushing liquid on the light-transmitting end cover 500, and avoid the situation where the flushing liquid cannot be discharged in the annular embedded groove 132 due to liquid accumulation. If the flushing liquid accumulates in the annular embedded groove 132 and cannot be discharged, it is very likely that the flushing liquid will be full in the annular embedded groove 132, which will not only prevent the light-transmitting end cover 500 from rotating, but also may form a large impact force. What's more, when the flushing liquid that cannot be discharged is stored to the point where it cannot be discharged, it will force the light-transmitting end cover 500 out of the limiting portion 520, causing the light-transmitting end cover 500 to have a large impact force in the human body cavity, thereby causing damage to the inner wall of the human body cavity. Therefore, the provision of the annular groove 132 can effectively avoid the above situation and improve the safety of the endoscope when in use.

[0070] In some embodiments, the distal surface of the light-transmitting end cap 500 is configured as a refractive surface (not shown in the figure). Exemplarily, the distal surface of the light-transmitting end cap 500 is configured to protrude outward. In this way, the light-transmitting end cap 500 can effectively improve the imaging clarity and brightness of the camera module 110. The shape of the refractive surface enables the light to be better focused, thereby reducing the scattering and distortion of the light during the imaging process. When the light passes through the light-transmitting end cap 500 and enters the camera module 110, the refractive surface can effectively focus the incident light onto the photosensitive element of the camera module 110, ensuring a clearer image output. This feature is particularly suitable for medical applications that require high-precision imaging, such as endoscopic examinations and real-time monitoring during surgery.

[0071] Secondly, the outwardly protruding design helps to increase the contact area of ​​the light-transmitting end cap 500, thereby improving the flow effect of the flushing liquid. During the flushing process, the flushing liquid can more comprehensively cover the surface of the light-transmitting end cap 500, ensuring that each position is evenly contacted with the flushing liquid, thereby improving the flushing effect. By effectively removing pollutants and body fluids attached to the surface of the light-transmitting end cap 500, the design of the refractive surface can help maintain a clear field of view and reduce the problem of blurred imaging caused by contamination.

[0072] In addition, the refractive surface of the light-transmitting end cap 500 can also enhance the depth and three-dimensional sense of the image to a certain extent. Since the refractive surface can improve the focusing effect of light, the patient's tissue structure appears clearer and more layered in the image, thereby helping doctors to more accurately judge the condition of the lesion or choose the best surgical plan. This is of great significance to the accuracy and safety of endoscopic operation.

[0073] Finally, the refractive surface design may also improve the wear resistance and pollution resistance of the transparent end cap 500. Compared with the flat design, the refractive surface can reduce the adhesion of external substances to the surface to a certain extent, thereby reducing the cleaning frequency and maintenance costs. This feature has a positive effect on improving the durability and reliability of medical devices.

[0074] See also Figure 1 to Figure 9 The present application also provides an endoscope, including an operating handle 600, an insertion portion 700 and a front end seat of the above-mentioned scheme, wherein the operating handle 600 is arranged on the proximal side of the insertion portion 700, and the front end seat is arranged on the distal side of the insertion portion 700.

[0075] The endoscope has the same or corresponding technical features as the aforementioned insertion part, and can achieve the same or corresponding technical effects. At the same time, the endoscope of the embodiment of the present application can be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiment of the present application does not specifically limit the type of the endoscope.

[0076] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A front end seat of an endoscope, applied to the insertion portion of an endoscope, characterized in that: include: A front end housing (100), wherein the front end housing (100) is provided with a camera module (110); A nozzle (200) is provided on the front end housing (100) and is located on one side of the camera module (110); A fluid main path (300) is provided in the front end housing (100) and is used to provide flushing liquid to the nozzle (200); the nozzle (200) is provided with a jet flow channel (210) connected to the fluid main path (300), wherein: The injection flow channel (210) comprises a first spray section (211), a second spray section (212) and a third spray section (213) which are connected in sequence, a proximal end of the first spray section (211) is connected to the fluid main path (300), and the inner diameter of the first spray section (211) gradually decreases from a side close to the fluid main path (300) to a side close to the second spray section (212); In a direction from the proximal end to the distal end of the front end housing (100), the extension path of the second spray section (212) gradually changes from axial extension to radial extension; The distal end of the third spray segment (213) is a spray port (2131), and the spray port (2131) of the third spray segment (213) faces the distal end surface of the camera module (110), and the third spray segment (213) is configured such that, from the side close to the second spray segment (212) to the side away from the second spray segment (212), the cross-sectional shape of the third spray segment (213) gradually changes from a circle to a flat strip; The nozzle (200) further comprises a V-shaped opening (220), wherein the V-shaped opening (220) comprises an upper inclined wall surface (221) and a lower inclined wall surface (222), wherein the injection port (2131) of the third injection section (213) is located on the upper inclined wall surface (221), and the lower inclined wall surface (222) and the injection port (2131) of the third injection section (213) are staggered, so that the flushing liquid ejected from the injection port (2131) avoids the lower inclined wall surface (222) and is then ejected onto the distal end surface of the camera module (110); The inclination angle of the third spray section (213) close to the lower inclined wall surface (222) is consistent with the inclination angle of the lower inclined wall surface (222).

2. The front end seat of an endoscope according to claim 1, characterized in that: The entry height of the flushing liquid entering the third spray section (213) from the second spray section (212) is greater than the spraying height of the flushing liquid sprayed from the spray port (2131) of the third spray section (213).

3. The front end seat of an endoscope according to claim 1, characterized in that: The front end housing (100) is provided with a movable cavity (120), and the nozzle (200) is movably arranged in the movable cavity (120).

4. The front end seat of an endoscope according to claim 3, characterized in that: An elastic part (400) is provided between the nozzle (200) and the movable cavity (120), and the elastic part (400) enables the nozzle (200) to always remain in the movable cavity (120) in a natural state; When there is flowing flushing liquid in the main fluid path (300), the nozzle (200) moves out of the movable cavity (120) under the action of the flushing liquid and sprays the flushing liquid toward the distal end surface of the camera module (110); when the flushing liquid in the main fluid path (300) stops flowing, the nozzle (200) is reset to the movable cavity (120) under the action of the elastic part (400).

5. A front end seat of an endoscope according to any one of claims 1 to 4, characterized in that: The front end housing (100) is concave at the distal end surface of the camera module (110) to form a mounting groove (130), and a light-transmitting end cover (500) is rotatably arranged in the mounting groove (130).

6. The front end seat of an endoscope according to claim 5, characterized in that: A plurality of water wheel blades (510) are evenly distributed on the outer peripheral wall of the light-transmitting end cover (500), an annular gap (131) is formed between the outer peripheral wall of the light-transmitting end cover (500) and the inner peripheral wall of the mounting groove (130), and the water wheel blades (510) extend into the annular gap (131); The main fluid path (300) has a fluid branch path (310), a distal end of the fluid branch path (310) is connected to the annular gap (131), and an extension path of the distal end of the fluid branch path (310) is tangent to the contour of the annular gap (131).

7. The front end seat of an endoscope according to claim 6, characterized in that: The outer peripheral wall of the light-transmitting end cover (500) is further provided with a limiting portion (520), the limiting portion (520) being located on a side of the water wheel blade (510) close to the distal end, and the inner side wall of the mounting groove (130) is provided with an annular embedding groove (132) for embedding the limiting portion (520); An outflow gap (133) is provided between the limiting portion (520) and the annular embedding groove (132), so that the flushing liquid entering the annular gap (131) is discharged to the far end of the front end housing (100) via the outflow gap (133).

8. The front end seat of an endoscope according to claim 5, characterized in that: The distal end surface of the light-transmitting end cap (500) is configured as a refractive surface.

9. An endoscope, characterized in that: It comprises an operating handle (600), an insertion portion (700) and a front end seat according to any one of claims 1 to 8, wherein: The operating handle (600) is arranged on the proximal side of the insertion portion (700), and the front end seat is arranged on the distal side of the insertion portion (700).

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