Uterine cavity endoscope

Abstract

The utility model discloses a uterine cavity endoscope which comprises a shell, a water injection mechanism used for injecting liquid medicine and the like into a uterine cavity, a water return mechanism used for sucking liquid such as blood in the uterine cavity, an instrument channel assembly used for enabling an instrument to stretch into the uterine cavity and a front end lens assembly used for obtaining image information in the uterine cavity. A water return pipe is arranged on a water injection pipe in a sleeving mode, a water return gap is formed between the water return pipe and the water injection pipe, meanwhile, a front-end lens assembly is connected with at least one of the water return pipe and the water injection pipe and communicated with the water return gap, and liquid can be injected into a uterine cavity or discharged out of the uterine cavity through the front-end lens assembly. Besides, by arranging the instrument channel assembly, the instrument channel assembly and the water injection pipe are communicated to form an instrument channel, and an instrument can enter the uterine cavity through the water injection pipe, so that water injection, water return, camera shooting and instrument entering are integrated into one tubular structure, the structure is more compact, the size of the uterine cavity endoscope is effectively reduced, and discomfort of a patient is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, especially a kind of hysteroscope. BACKGROUND

[0002] Hysteroscope is also called hysteroscope, it is a new, minimally invasive gynecological diagnosis and treatment technology, it is a kind of fiber-optic endoscope for uterine cavity inspection and treatment, which includes hysteroscope, energy system, light source system, perfusion system and imaging system;It is that the front part of mirror body enters uterine cavity, has magnifying effect to the observed part, to become the preferred inspection method of gynecological hemorrhagic disease and intrauterine lesion with intuition and accuracy.

[0003] In the process of being suitable for hysteroscopy to check, the part with lens of hysteroscope front end needs to enter patient's body, physiological saline or auxiliary treatment liquid medicine is injected into uterine cavity environment, and the image information of uterine cavity environment is obtained through lens assembly to doctor, and doctor can also select appropriate instrument, such as biopsy forceps, to enter uterine cavity through hysteroscopy and operate, and blood water and other liquid in uterine cavity environment need to be discharged during operation process.

[0004] But due to the complex design of the functional structure of traditional hysteroscopy, most of the hysteroscopy is large in size, not easy to operate, which brings greater discomfort to patients and also limits the operation of doctors. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of hysteroscope, to solve at least one technical problem in the prior art.

[0006] To solve the above technical problems, the utility model aims at realizing by the following technical scheme: provide a kind of hysteroscope, comprising:

[0007] Shell, inside installation cavity is had;

[0008] Water injection mechanism, including water injection pipe and at least part is set in the installation cavity and is communicated with water injection pipe water injection assembly;

[0009] Water return mechanism, including water return pipe and at least part is set in the installation cavity and is communicated with water return pipe water return assembly, water return pipe is sleeved on water injection pipe and is provided with water return gap between water injection pipe outer wall and water return pipe inner wall, and the water return gap is configured as the passage for the liquid in uterine cavity to be discharged;

[0010] Instrument channel assembly is connected to the water injection assembly in the installation cavity of the shell, and the instrument channel assembly has instrument entry channel for instrument to enter, the instrument entry channel is communicated with the water injection pipe, forms the instrument channel for instrument to pass through;

[0011] a front lens assembly connected with a water inlet end of at least one of the water return pipe and the water injection pipe, the front lens assembly configured to allow liquid in the water injection pipe to pass through the front lens assembly into the uterine cavity and to allow liquid in the uterine cavity to pass through the front lens assembly into the water return gap.

[0012] Further, the front lens assembly comprises:

[0013] a front cover having a first cavity and a second cavity, the first cavity being in communication with the outside through an imaging hole, the second cavity being in communication with the outside through a first hole;

[0014] an optical imaging assembly disposed in the first cavity, the optical imaging assembly configured to image through the imaging hole;

[0015] a connecting pipe body having a first end opening and a second end opening different from the first end opening in direction, the connecting pipe body configured to connect the front cover and the water return pipe, the first end opening having a first center line, the second end opening having a second center line, the first center line being disposed offset from the second center line when viewed in an axial direction of the imaging hole.

[0016] Further, the connecting pipe body further comprises a connecting pipe partition plate extending from the first end opening to the second end opening to form a third passage and a fourth passage independent from each other, one end of the third passage configured to communicate with at least the second cavity, the other end of the third passage configured to communicate with the water return gap of the water return pipe, one end of the fourth passage configured to communicate with the environment in the uterine cavity, the other end of the fourth passage configured to communicate with the water injection pipe.

[0017] Further, the first cavity and the second cavity are both non-overlapping with the second passage when viewed in the axial direction of the imaging hole.

[0018] Further, the instrument passage assembly comprises:

[0019] a first insert disposed at least partially in the mounting cavity of the housing, the first insert having an instrument inlet passage and a first through-pipe passage configured to communicate the instrument inlet passage with the water injection pipe, the first through-pipe passage further configured to communicate the water injection assembly with the water injection pipe.

[0020] Further, the instrument passage assembly further comprises:

[0021] a rotating member, one end of which is connected to the first plug at a position away from the water injection pipe, and the other end of which extends at least partially outside the housing, the rotating member having a device guide channel which is in communication with the device inlet channel, the rotating member being configured to rotate synchronously with the first plug and the water injection pipe when the rotating member is driven to rotate.

[0022] Further, the first plug further comprises a first one-way valve, which is arranged in the device inlet channel, and the first one-way valve is configured to prevent fluid from flowing from the first through-pipe channel to the device inlet channel when a device passes through the first one-way valve.

[0023] Further, the housing is provided with at least two first limiting blocks on the inner wall of the mounting cavity, the at least two first limiting blocks are arranged at an angle and form a limiting interval, the first plug is provided with at least one second limiting block, the at least one second limiting block is arranged in the limiting interval, and the at least one second limiting block is configured to contact the at least two first limiting blocks when the rotating member rotates, so as to limit the rotation angle of the first plug.

[0024] Further, the water injection assembly comprises:

[0025] a water inlet base, which has a water inlet cavity inside, the water inlet cavity being configured to accommodate at least a portion of the first plug, the water inlet cavity having a first water inlet end;

[0026] a water inlet pipe, one end of which is connected to the first water inlet end of the water inlet base and is in communication with the water inlet cavity;

[0027] the portion of the first plug located in the water inlet cavity is provided with at least one water inlet communication hole, the water inlet communication hole being configured to communicate the first through-pipe channel with the water inlet cavity.

[0028] Further, the water return assembly comprises:

[0029] a water return base, which is arranged on one side of the water inlet base, the water return base having a water return cavity inside, the water return cavity having a second water inlet end and a second water outlet end, the second water inlet end being connected to the water return pipe;

[0030] a water outlet pipe, one end of which is connected to the second water outlet end of the water return base;

[0031] a water return plug, which is arranged at least partially in the water return cavity of the water return base, the water return plug having a second through-pipe channel configured to communicate the water return gap with the water return cavity, and the water injection pipe being configured to pass through the water return base via the second through-pipe channel.

[0032] This invention provides a hysteroscopy system. A return water tube is fitted over an injection water tube, forming a return water gap between them. A front-end lens assembly is connected to at least one of the return and injection water tubes and communicates with the return water gap, allowing liquid to be injected into or discharged from the uterine cavity through the front-end lens assembly. Furthermore, an instrument channel assembly is incorporated, sharing a common channel with the injection water tube to allow instruments to enter the uterine cavity via the injection water tube. This integrates water injection, return water, imaging, and instrument access into a single tubular structure, resulting in a more compact design, effectively reducing the size of the hysteroscopy and minimizing patient discomfort. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A schematic diagram of the overall structure of the hysteroscope provided in this embodiment of the utility model;

[0035] Figure 2 Provided for the embodiments of this utility model Figure 1 A schematic diagram of the cross-sectional structure;

[0036] Figure 3 A schematic diagram of the structure of the hysteroscope after removing the housing, provided in an embodiment of this utility model;

[0037] Figure 4 Provided for the embodiments of this utility model Figure 3 A schematic diagram of the cross-sectional structure;

[0038] Figure 5 Provided for the embodiments of this utility model Figure 4 A magnified structural diagram of part A in the middle;

[0039] Figure 6 Provided for the embodiments of this utility model Figure 4 A magnified structural diagram of part B in the middle section;

[0040] Figure 7 This is a schematic diagram of the front-end lens assembly structure provided in an embodiment of the present utility model;

[0041] Figure 8 A schematic diagram of the front-end lens assembly from another perspective provided in an embodiment of this utility model;

[0042] Figure 9 Provided for the embodiments of this utility model Figure 7 A schematic diagram of the cross-sectional structure;

[0043] Figure 10 The structure schematic diagram of the front end cover is provided for the embodiment of the utility model, and is observed along the imaging hole axis direction.

[0044] Figure 11 The explosion structure schematic diagram of the front end lens assembly is provided for the embodiment of the utility model.

[0045] Figure 12 The explosion structure schematic diagram of the lens mounting structure is provided for the embodiment of the utility model.

[0046] Figure 13 The explosion structure schematic diagram of the front end mounting structure is provided for the embodiment of the utility model.

[0047] The identification in the figure is explained:

[0048] The shell; 11, the mounting cavity; 12, the holding portion; 13, the water inlet control valve; 14, the water outlet control valve;

[0049] The water injection mechanism; 21, the water injection pipe; 22, the water injection assembly; 221, the water inlet base; 2211, the water inlet cavity; 2212, the first water inlet end; 2213, the first water outlet end; 222, the water inlet pipe;

[0050] The water return mechanism; 31, the water return pipe; 32, the water return assembly; 321, the water return base; 3211, the water return cavity; 3212, the second water inlet end; 3213, the second water outlet end; 322, the water return plug-in; 3221, the second pipe passage; 3222, the water return communication hole; 33, the water return gap; 34, the water outlet pipe;

[0051] The instrument channel assembly; 41, the first plug-in; 411, the instrument inlet channel; 412, the first pipe passage; 413, the instrument guide portion; 414, the first one-way valve; 415, the second one-way valve; 416, the water inlet communication hole; 42, the rotating piece; 421, the instrument guide channel; 43, the channel inlet; 44, the channel outlet;

[0052] The front end lens assembly; 51, the front end cover; 511, the first cavity; 5111, the imaging hole; 512, the second cavity; 5121, the first hole; 513, the end cover baffle; 52, the optical imaging assembly; 521, the lens body; 522, the light source; 53, the connecting pipe body; 531, the first end opening; 532, the second end opening; 533, the connecting pipe baffle; 534, the third channel; 535, the fourth channel; 54, the plug-in; 541, the first plug block; 5411, the first surface; 542, the second plug block; 5421, the second surface; 55, the convex portion; 56, the concave portion; 57, the pipe member; 58, the water passing gap. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application.

[0054] It should be understood that the terms "comprising" and "including" as used in the specification and the appended claims indicate the presence of the described features, integers, steps, operations, elements, and / or components but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0055] It should also be understood that the terms used in the present application specification are only for the purpose of describing particular embodiments and are not intended to limit the present application. As used in the present application specification and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0056] It should be further understood that the term "and / or" as used in the present application specification and the appended claims means one or more of the associated listed items as well as all possible combinations of the items.

[0057] Figure 1 And Figure 2 The present application is an embodiment of a hysteroscope, which has a gun-shaped overall shape and comprises a shell 1, a water injection mechanism 2, a water return mechanism 3, a device channel assembly 4, and a front end lens assembly 5.

[0058] The shell 1 has an installation cavity 11 inside, which is used to install the water injection mechanism 2, the water return mechanism 3, and the device channel assembly 4. Generally, the shell 1 is detachably connected by a clasp or a bolt, etc. connecting structure, to form the shell 1 with the installation cavity 11 inside. Of course, the shell 1 can also be composed of more than two components to form the above-mentioned structure with the installation cavity 11 inside, which is not specifically limited in the present application.

[0059] The water injection mechanism 2 and the water return mechanism 3 are at least partially arranged inside the installation cavity 11 of the shell 1, and they form a water path structure of the hysteroscope, which realizes the functions of injecting physiological saline, liquid medicine, etc. into the uterine cavity environment, and discharging blood water, physiological saline, liquid medicine, etc. outside the uterine cavity. The specific structures of the water injection mechanism 2 and the water return mechanism 3 will be described in detail below.

[0060] Referring toFigures 3 to 5 The water injection mechanism 2 comprises a water injection pipe 21 and a water injection assembly 22 which is arranged at least partially in the mounting cavity 11 and is in communication with the water injection pipe 21.

[0061] The water injection assembly 22 comprises a water inlet base 221 and a water inlet pipe 222, the water inlet base 221 has a water inlet cavity 2211 inside, the water inlet cavity 2211 has a first water inlet end 2212 which is connected to the water inlet pipe 222, and the water inlet pipe 222 extends to the outside of the shell 1 and is connected to a water source. Generally, the water source can be a water pump with pumping capacity, and the physiological saline, liquid medicine and the like are pumped into the water inlet cavity 2211 of the water inlet base 221 through the water inlet pipe 222 and the first water inlet end 2212 by the pumping of the water pump.

[0062] Generally, the shell 1 is in the shape of a gun to provide a holding portion 12 which can be held by medical personnel. In order to reasonably arrange the various mechanisms of the hysteroscope, the water inlet pipe 222 is preferably arranged in the holding portion 12, and therefore the water inlet pipe 222 is preferably a flexible pipe to adapt to the shape and structure of the holding portion 12 and reasonably arrange the running direction of the water inlet pipe 222.

[0063] One end of the flexible pipe is sealingly connected to the first water inlet end 2212, and the other end of the flexible pipe passes through the shell 1 and extends to the outside of the shell 1 to be connected to the water source. Generally, when the hysteroscope is actually applied, a water inlet control valve 13 needs to be arranged between the water inlet pipe 222 and the water source to control the flow of the water inlet pipe 222 or to close the water inlet pipe 222. In the embodiment, a water passage opening is arranged at the lower end of the holding portion 12 of the shell 1, through which the water inlet pipe 222 or the water inlet control valve 13 passes. In order to fix the water inlet control valve 13, in the embodiment, the water inlet control valve 13 is configured to pass through the water passage opening and partially enter the mounting cavity 11 of the shell 1, the part of the water inlet control valve 13 which enters the mounting cavity 11 of the shell 1 is connected to the water inlet pipe 222, and the control switch of the water inlet control valve 13 is arranged outside the shell 1. When it is necessary to adjust the flow of the water inlet pipe 222 or to close the water inlet pipe 222, the medical personnel can manually control the control switch of the water inlet control valve 13 to achieve the above effects.

[0064] In the embodiment, the water inlet base 221 is in the shape of a pipe as a whole and is detachably mounted on the inner wall of the shell 1 by screws. Specifically, a plurality of threaded supports are arranged on the inner wall of the shell 1, and the water inlet base 221 is detachably fixed on the plurality of supports by screws.

[0065] Specifically, in the present embodiment, the water inlet base 221 is open at one end and has a first water outlet end 2213 at the other end. The open end is connectable to the instrument channel assembly 4, and when the instrument channel assembly 4 is connected to the open end, the instrument channel assembly 4 is sealingly connected to the open end, so that a water inlet cavity 2211 capable of containing liquid is formed inside the water inlet base 221. The water injection tube 21 is connected to the first water outlet end 2213 of the water inlet cavity 2211 of the water inlet base 221, and the water injection tube 21 can extend away from the water inlet base 221, so that the liquid contained in the water inlet cavity 2211 can be injected into the uterine cavity environment through the water injection tube 21.

[0066] More specifically, the water inlet base 221 further comprises a water inlet insert disposed in the water inlet cavity 2211 of the water inlet base 221, the water inlet insert having a first tube passage 412 and at least one water inlet communication hole 416, the at least one water inlet communication hole 416 being configured to communicate the water inlet cavity 2211 and the first tube passage 412, and one end of the water injection tube 21 being connected to the first tube passage 412.

[0067] The water inlet insert is inserted into the water inlet cavity 2211 from the opening of the water inlet base 221, and the water inlet insert is sealingly connected to the opening.

[0068] The first tube passage 412 is formed in the portion of the water inlet insert located in the water inlet cavity 2211, and the at least one water inlet communication hole 416 is disposed on the wall of the first tube passage 412 and is configured to communicate the water inlet cavity 2211 and the first tube passage 412. In the present embodiment, the water inlet communication hole 416 is provided with two symmetrically disposed water inlet communication holes 416 on the wall of the first tube passage 412.

[0069] The water injection tube 21 is connected to the first tube passage 412 of the water inlet insert to communicate the water injection tube 21 and the water inlet cavity 2211, i.e., in the present embodiment, the end of the first tube passage 412 connected to the water injection tube 21 forms the first water outlet end 2213 of the water inlet cavity 2211.

[0070] Please refer to Figures 3 to 6 , the water return mechanism 3 comprises a water return pipe 31 and a water return assembly 32 at least partially disposed in the mounting cavity 11 and in communication with the water return pipe 31.

[0071] The water return assembly 32 comprises a water return base 321, a water outlet pipe 34 and a water return insert 322. The water return base 321 is disposed on one side of the water inlet base 221, and the interior of the water return base 321 has a water return cavity 3211, the water return cavity 3211 having a second water inlet end 3212 and a second water outlet end 3213. The second water inlet end 3212 is connected to the water return pipe 31, and the second water outlet end 3213 is connected to the water outlet pipe 34.

[0072] The water outlet pipe 34 extends to the outside of the shell 1 and is connected with the water pumping mechanism. Generally, the water pumping mechanism can be a water pump with pumping capacity. Through the pumping of the water pump, a certain suction force is generated to pump out the liquid such as blood, physiological saline and medicine in the uterine cavity through the water return pipe 31, the second water inlet end 3212, the water return cavity 3211 and the second water outlet end 3213.

[0073] Generally, the shell 1 is in the shape of a gun to provide a holding part 12 for medical personnel to hold. In order to reasonably arrange the mechanisms of the hysteroscope, the water outlet pipe 34 is preferably arranged in the holding part 12, and therefore, the water outlet pipe 34 preferably adopts a flexible pipe to adapt to the shape structure of the holding part 12 and reasonably arrange the running direction of the water inlet and outlet pipes 34.

[0074] One end of the flexible pipe is sealingly connected with the second water outlet end 3213, and the other end of the flexible pipe extends through the shell 1 and is connected with the water pumping mechanism outside the shell 1. Generally, in the actual application of the hysteroscope, a water outlet control valve 14 needs to be arranged between the water outlet pipe 34 and the water pumping mechanism to control the flow rate of the water outlet pipe 34 or to close the water outlet pipe 34. In the embodiment, the lower end of the holding part 12 of the shell 1 is provided with a water passage opening through which the water outlet pipe 34 or the water outlet control valve 14 can pass. In order to fix the water outlet control valve 14, in the embodiment, the water outlet control valve 14 is configured to pass through the water passage opening and partially enter the mounting cavity 11 of the shell 1, the part of the water outlet control valve 14 entering the mounting cavity 11 of the shell 1 is connected with the water outlet pipe 34, and the control switch of the water outlet control valve 14 is arranged outside the shell 1. When it is necessary to adjust the flow rate of the water outlet pipe 34 or to close the water outlet pipe 34, the medical personnel can manually control the control switch of the water outlet control valve 14 to achieve the above effects.

[0075] In the embodiment, since the water inlet pipe 222 and the water outlet pipe 34 are both arranged at the lower end of the holding part 12 of the shell 1, in order to facilitate processing and ensure a certain structural strength, the water inlet pipe 222 and the water outlet pipe 34 share the same water passage opening, and the water inlet control valve 13 and the water outlet control valve 14 are installed on the same valve base. In this way, the water inlet control valve 13 and the water outlet control valve 14 can be installed at the water passage opening of the shell 1 only once.

[0076] Please continue to refer to Figure 2 and Figure 3 In the embodiment, the water return base 321 is in the shape of a pipe as a whole and is detachably mounted on the inner wall of the shell 1 by screws. Specifically, the inner wall of the shell 1 is provided with a plurality of supports with internal threads, and the water return base 321 is detachably fixed on the supports by screws. In the embodiment, the water return base 321 is identical in structure to the water inlet base 221, except that the structural dimensions of some positions are different. This design can not only reduce the difficulty of design and development, but also play a certain foolproof role in the production and assembly process.

[0077] Specifically, in the present embodiment, the water return base 321 is open at one end and has a second water outlet end 3213 at the other end. The open end is connectable with the water return plug 322, and when the water return plug 322 is connected to the open end, the water return plug 322 is sealingly connected to the open end, so that a water return cavity 3211 capable of containing liquid is formed inside the water return base 321. The water return pipe 31 is connected to the second water outlet end 3213 of the water return cavity 3211 of the water return base 321, and the water return pipe 31 can extend away from the water return base 321, so that the liquid in the uterine cavity environment can flow back to the water return cavity 3211 of the water return base 321 through the water return pipe 31.

[0078] In the present embodiment, the water return plug 322 is at least partially disposed in the water return cavity 3211 of the water return base 321, and the water return plug 322 has a second pipe passage 3221, the water injection pipe 21 is configured to pass through the water return base 321 via the second pipe passage 3221, and the water injection pipe 21 is sealingly connected at the connection where it penetrates into the second pipe passage 3221, to ensure the sealing of the connection between the second pipe passage 3221 and the water injection pipe 21, i.e. to ensure the sealing of the water return cavity 3211.

[0079] Meanwhile, the water return plug 322 is provided with at least one water return communication hole 3222, which is configured to communicate the water return cavity 3211 with the second pipe passage 3221, and one end of the water return pipe 31 is connected to the second pipe passage 3221 of the water return plug 322. In the present embodiment, the end of the second pipe passage 3221 connected to the water return pipe 31 forms the above-mentioned second water inlet end 3212.

[0080] Specifically, referring to Figures 2 to 6 , after the water injection pipe 21 passes through the above-mentioned second pipe passage 3221, it penetrates into the water return pipe 31, i.e. the water return pipe 31 is sleeved on the water injection pipe 21 and a water return gap 33 is provided between the outer wall of the water injection pipe 21 and the inner wall of the water return pipe 31, and the second pipe passage 3221 is configured to communicate the water return gap 33 with the water return cavity 3211, so that the liquid in the uterine cavity environment can flow back to the second pipe passage 3221 through the above-mentioned water return gap 33, and enter the water return cavity 3211 through the water return communication.

[0081] In the present embodiment, the water injection pipe 21 is disposed in the second pipe passage 3221, and a water return gap 33 is also provided between the water injection pipe 21 and the wall of the second pipe passage 3221. The water return communication hole 3222 is provided on the wall of the second pipe passage 3221, and in the present embodiment, the water return communication hole 3222 is symmetrically provided with two.

[0082] The water injection pipe 21 and the water return pipe 31 extend away from the water inlet base 221. When water injection is performed, liquid is injected from the water injection pipe 21. When water return is performed, liquid enters the water return gap 33 of the water return pipe 31. In this embodiment, the water injection pipe 21 and the water return pipe 31 are both rigid pipes.

[0083] Referring to Figure 2 , Figure 4 and Figure 5 , the hysteroscope is also provided with an instrument channel assembly 4, which is connected to the water injection assembly 22 in the mounting cavity 11 of the shell 1. The instrument channel assembly 4 has an instrument inlet channel 411 for the instrument to enter, and the instrument inlet channel 411 is in communication with the water injection pipe 21, forming an instrument channel for the instrument to pass through.

[0084] Specifically, the instrument channel assembly 4 is connected to the water inlet base 221 and extends at least partially into the water inlet cavity 2211. The end of the instrument channel assembly 4 that extends into the water inlet cavity 2211 has a channel outlet 44 that is in communication with the water inlet end of the water injection pipe 21. The other end of the instrument channel assembly 4 that is outside the water inlet cavity 2211 has a channel inlet 43. The channel inlet 43 and the channel outlet 44 form a first channel for the instrument to pass through. The water inlet end and the water outlet end of the water injection pipe 21 form a second channel for the instrument to pass through.

[0085] The first channel and the second channel together form an instrument channel for the instrument to pass from outside the shell 1 into the hysteroscope and then pass through the interior of the shell 1 to enter the hysteroscope environment.

[0086] In this embodiment, the instrument channel assembly 4 includes a first plug-in component 41, which is at least partially disposed in the mounting cavity 11 of the shell 1. The first plug-in component 41 has the instrument inlet channel 411 and a first pipe passage 412 that is configured to be in communication with the instrument inlet channel 411 and the water injection pipe 21. The first pipe passage 412 is also configured to be in communication with the water injection assembly 22 and the water injection pipe 21.

[0087] Specifically, the first plug-in component 41 is inserted into the water inlet cavity 2211 from the opening of the water inlet base 221, and the first plug-in component 41 is sealingly connected to the opening. The portion of the first plug-in component 41 that is inserted into the water inlet cavity 2211 forms the first pipe passage 412. The outlet of the first pipe passage 412 is the channel outlet 44, and the channel outlet 44 is connected to the water injection pipe 21. That is, the portion of the first plug-in component 41 that is located in the water inlet cavity 2211 corresponds to the aforementioned water inlet plug-in component.

[0088] The first insert 41 is formed with an instrument inlet passage 411 at a portion of the first insert 41 located outside the water inlet cavity 2211, and an inlet of the instrument inlet passage 411 is the above-mentioned passage inlet 43. The diameter of the passage inlet 43 is greater than the diameter of the passage outlet 44, and the instrument inlet passage 411 is generally in the shape of a trumpet mouth, which guides the instrument and leads the instrument to be inserted into an instrument guiding portion 413 in the first tube passage 412, so as to facilitate the insertion of the instrument. In other words, the first insert 41 further comprises the instrument guiding portion 413 in communication with an end of the first tube passage 412 away from the water injection tube 21, and the instrument guiding portion 413 is configured to guide the instrument and lead the instrument to be inserted into the first tube passage 412, that is, the instrument inlet passage 411 is formed in the instrument guiding portion 413, and the instrument guiding portion 413 is a part of the first insert 41.

[0089] In the present embodiment, the instrument guiding portion 413 (i.e., the instrument inlet passage 411) is integrally connected with a portion of the first insert 41 located in the water inlet cavity 2211 to form the first insert 41.

[0090] Therefore, the instrument inlet passage 411 (i.e., the passage inlet 43) and the first tube passage 412 (i.e., the passage outlet 44) form a first passage for the instrument to pass through, and the water inlet end and the water outlet end of the water injection tube 21 form a second passage for the instrument to pass through. The instrument enters the uterine cavity environment from the first passage and the second passage.

[0091] Please continue to refer to Figure 5 In order to prevent the liquid in the water inlet cavity 2211 from flowing back to the instrument inlet passage 411 of the instrument guiding portion 413 and causing leakage, the instrument guiding portion 413 is provided with a first one-way valve 414, which is configured to prevent fluid from flowing from the first tube passage 412 to the instrument guiding portion 413 when the instrument passes through the first one-way valve 414.

[0092] The first one-way valve 414 is a first elastic body with a certain hardness, which can abut against a connection between the instrument guiding portion 413 and the first tube passage 412. The first elastic body is provided with a scratch penetrating the first elastic body towards an end of the first tube passage 412, and the scratch is elastically deformable to form a through hole, and is configured to prevent fluid from flowing from the first tube passage 412 to the instrument guiding portion 413 when the instrument passes through the through hole.

[0093] In the embodiment, the first elastic body is silica gel or rubber with certain hardness, i.e., the first one-way valve 414 is made of silica gel or rubber with certain hardness and elastic deformation capability, and a cross-shaped scratch is provided on the end of the first elastic body facing the first through-pipe passage 412, the cross-shaped scratch penetrating the first elastic body, so that when the instrument passes through the cross-shaped scratch of the first elastic body, the cross-shaped scratch can be elastically deformed and form a through hole. Since the first elastic body has sufficient elasticity at the cross-shaped scratch, the through hole formed by the first elastic body can form sufficient sealing with the instrument, thereby preventing fluid from flowing from the first through-pipe passage 412 to the instrument guide part 413, thereby realizing the effect of one-way conduction.

[0094] Specifically, the instrument guide part 413 is provided with a first step part, the shape of the first step part is matched with the shape of the first one-way valve 414, and when the first elastic body is installed in the first step part, the first elastic body can abut against the inner wall of the instrument guide part 413 located outside the first step part under the action of its own elasticity.

[0095] Please continue to refer to Figure 5 In order to further improve the sealing effect, the instrument guide part 413 is further provided with a second one-way valve 415, the first one-way valve 414 is arranged between the first through-pipe passage 412 and the second one-way valve 415, and the second one-way valve 415 is configured to prevent fluid from flowing from the first one-way valve 414 through the second one-way valve 415 when the instrument passes through the second one-way valve 415.

[0096] Specifically, the second one-way valve 415 is arranged in the first step part and is arranged in close contact with the first one-way valve 414. The second one-way valve 415 is a second elastic body with certain hardness, and one end of the second elastic body facing the first one-way valve 414 is provided with a small hole through which the instrument can pass.

[0097] In the embodiment, the diameter of the small hole is 1 mm, and of course in other embodiments, the diameter of the small hole can also be other sizes, such as 1.5 mm, 2 mm, etc. When the instrument passes through the small hole, the inner wall of the small hole can be extruded, so that the small hole is elastically deformed, and sufficient sealing can be formed between the inner wall of the small hole and the instrument, thereby realizing good one-way conduction effect.

[0098] Please continue to refer to Figure 5, the instrument channel assembly 4 further comprises a rotating member 42, one end of the rotating member 42 is connected to the first plug-in member 41 away from the water injection pipe 21, and the other end at least partially extends to the outside of the shell 1, the rotating member 42 has an instrument guide channel 421 which communicates with the instrument inlet channel 411, and the rotating member 42 is configured to rotate the first plug-in member 41 and the water injection pipe 21 synchronously with the rotating member 42 when the rotating member 42 is driven to rotate.

[0099] In the embodiment, the rotating member 42 has a generally trumpet shape, one end of which is connected to the instrument guide part 413 in the mounting cavity 11 of the shell 1, and the other end extends to the outside of the shell 1, and the part of the rotating member 42 extending to the outside of the shell 1 has a trumpet, which forms the above-mentioned instrument guide channel 421.

[0100] Further, in the embodiment, the end of the rotating member 42 outside the shell 1 is bent outward along the radial direction of the trumpet to form a knob part which can be manually operated by the user, and the knob part is provided with corresponding anti-slip patterns to facilitate user operation. The user can drive the first plug-in member 41 to rotate by rotating the knob part, and drive the water injection pipe 21 and the water return pipe 31 to rotate synchronously, and then drive the front lens assembly 5 at the end of the water return pipe 31 to rotate, which is beneficial for the user to find the appropriate shooting angle or find the appropriate instrument operation angle.

[0101] Specifically, the instrument guide part 413 is provided with a second step part adjacent to the first step part and disposed on the side of the first step part away from the first pipe passage 412, and the diameter of the second step part is greater than that of the first step part. The end of the rotating member 42 connected to the instrument guide part 413 is disposed in the second step part, and the rotating member 42 can be connected and fixed with the inner wall of the instrument guide part 413 by a buckle structure or threads or bolts, etc.

[0102] Please refer to Figures 2 to 4 , the shell 1 is provided with at least two first limiting blocks on the inner wall in the mounting cavity 11, the at least two first limiting blocks are arranged at an angle and form a limiting interval, the first plug-in member 41 is provided with at least one second limiting block, the at least one second limiting block is arranged in the limiting interval, and the at least one second limiting block is configured to contact the at least two first limiting blocks when the rotating member 42 rotates, so as to limit the rotation angle of the first plug-in member 41.

[0103] In this embodiment, two first limiting blocks are provided, and the two first limiting blocks are set on the inner wall of the mounting cavity 11 at an included angle of 180° apart. One second limiting block is provided, and the second limiting block is set on the outer wall of the instrument guide 413 of the first insert 41. When the user rotates the rotating component 42, the second limiting block can move within the limiting range formed between the two first limiting blocks, and can contact one of the two first limiting blocks when the rotating component 42 rotates to a certain angle, thereby limiting the rotation angle of the rotating component 42 to prevent excessive rotation of the water injection pipe 21, return pipe 31, and front lens assembly 5, which could break internal wires or cause the flexible tube to detach due to excessive rotation and leak water.

[0104] As described above, this embodiment involves fitting the return water pipe 31 onto the injection water pipe 21, forming a return water gap 33 between them. Simultaneously, the front-end lens assembly 5 is connected to at least one of the return water pipe 31 and the injection water pipe 21, and communicates with the return water gap 33, allowing liquid to be injected into or discharged from the uterine cavity through the front-end lens assembly 5. Furthermore, an instrument channel assembly 4 is provided, forming an instrument channel with the injection water pipe 21, allowing instruments to enter the uterine cavity via the injection water pipe 21. This integrates water injection, return water, imaging, and instrument entry into a single tubular structure, resulting in a more compact structure, effectively reducing the volume of the hysteroscope and minimizing patient discomfort.

[0105] Please refer to the following: Figure 2 , Figures 7 to 13 The front-end lens assembly 5 includes a front-end cover 51, an optical imaging assembly 52, and a connecting tube 53.

[0106] The front cover 51 has a first cavity 511 and a second cavity 512. The first cavity 511 communicates with the outside through an imaging hole 5111, and the second cavity 512 communicates with the outside through a first hole 5121. An optical imaging component 52 is disposed in the first cavity 511 and is configured to image through the imaging hole 5111. The connecting tube 53 has a first end opening 531 and a second end opening 532 facing a different direction from the first end opening 531. The connecting tube 53 is configured to connect the front cover 51 and the return water pipe 31. The first end opening 531 has a first center line, and the second end opening 532 has a second center line. The first end opening 531 is connected to the front cover 51. When viewed along the axial direction of the imaging hole 5111, the first center line is offset from the second center line.

[0107] In the embodiment, the first center line of the first end opening 531 is offset from the second center line of the second end opening 532, so that the overall shape of the connecting pipe body 53 is curved or streamlined, i.e., the imaging hole 5111 is offset from the water inlet end of the water return pipe 31 and the water outlet end of the water injection pipe 21, and they are not on the same straight line. In this way, the front lens assembly 5 does not hinder the operation of the instrument.

[0108] Further, the connecting pipe body 53 further comprises a connecting pipe partition plate 533 extending from the first end opening 531 to the second end opening 532 to form a third passage 534 and a fourth passage 535 independent of each other, one end of the third passage 534 is configured to communicate with at least the second cavity 512, the other end of the third passage 534 is configured to communicate with the water return gap 33 of the water return pipe 31, one end of the fourth passage 535 is configured to communicate with the intrauterine environment, and the other end of the fourth passage 535 is configured to communicate with the water injection pipe 21. In this way, the liquid in the intrauterine environment can flow back to the water return gap 33 through the third passage 534, and then be discharged through the water return gap 33, the water return cavity 3211, and the water outlet pipe 34. The physiological saline, the drug solution, etc. can be introduced into the intrauterine environment through the water inlet pipe 222, the water inlet cavity 2211, the water injection pipe 21, and the fourth passage 535.

[0109] Further, the front end cover 51 further comprises an end cover partition plate 513 configured to separate the first cavity 511 from the second cavity 512, and the first cavity 511 and the second cavity 512 do not overlap when viewed in the axial direction of the imaging hole 5111. In the embodiment, the end cover partition plate 513 separates the first cavity 511 and the second cavity 512, but the first cavity 511 and the second cavity 512 are in communication with the third passage 534 at the same time, i.e., the first cavity 511 and the second cavity 512 are not completely independent of each other.

[0110] In the embodiment, the first cavity 511 and the second cavity 512 do not overlap when viewed in the axial direction of the imaging hole 5111, so that when the optical imaging assembly 52 is installed in the first cavity 511, the optical imaging assembly 52 does not hinder the backflow of the liquid in the first cavity 512 and the second cavity 512, and does not affect the water return effect.

[0111] Further, when viewed along the axial direction of the imaging hole 5111, the first cavity 511 and the second cavity 512 are both non-overlapping with the fourth channel 535. With this design, the fourth channel 535, i.e., the water outlet end of the water injection pipe 21, is completely located on one side of the first cavity 511 and the second cavity 512, which does not interfere with the operation of the instrument and the injection of physiological saline and other liquids, and can compress the volume of the front lens assembly 5 while ensuring that the instrument and the water injection effect are not affected, thereby reducing the volume of the front lens assembly 5 as much as possible to reduce the discomfort of the patient during use.

[0112] Further, when viewed along the axial direction of the imaging hole 5111, the first hole 5121 is at least partially disposed farther from the fourth channel 535 than the imaging hole 5111. With this design, the imaging hole 5111 can be closer to the middle of the front cover 51 without being closer to the edge of the front cover 51, which allows the imaging hole 5111 to be processed into a larger diameter circular hole, and the optical imaging assembly 52 can be disposed closer to the middle of the front cover 51 to obtain more light to meet the imaging requirements of the optical imaging assembly 52.

[0113] Further, when viewed along the axial direction of the imaging hole 5111, the first hole 5121 has a first width along a first direction and a second width along a second direction, the first width is greater than the second width, and the first width is greater than the diameter of the imaging hole 5111. With this design, the first hole 5121 forms a flat hole structure with a wide end and a narrow end, thereby forming a first hole 5121 with the largest possible cross-sectional area on the front cover 51 with limited total area, thereby obtaining the best backflow effect on the front cover 51 with limited volume.

[0114] Further, the connecting pipe body 53 has an inclination angle, which is defined as the included angle between the line connecting the first virtual intersection point of the first end opening 531 and the first center line and the second virtual intersection point of the second end opening 532 and the second center line and the first center line or the second center line, the inclination angle is greater than or equal to 10° and less than or equal to 24°. In this embodiment, the inclination angle is 18°, of course, in other embodiments, the inclination angle can also be 12°, 14°, 16°, 20°, 22° or other angles, again without listing one by one. With this design, the optical imaging assembly 52 can obtain a larger imaging viewing angle.

[0115] In further embodiments, the optical imaging assembly 52 includes a lens body 521 and at least one light source 522, the at least one light source 522 is connected to the outer surface of the lens body 521, and when viewed along the axial direction of the imaging hole 5111, the lens body 521 is at least partially exposed to the imaging hole 5111.

[0116] The front end cover 51 has a front end inner surface and at least one circumferential inner surface other than the front end inner surface, and at least one of the light sources 522 is arranged at a distance from at least one of the front end inner surface and the at least one circumferential inner surface. The arrangement of the light source 522 at a distance from at least one of the front end inner surface and the at least one axial inner surface of the front end cover 51 can provide a certain heat dissipation space and more effectively reduce the heating condition of the light source 522 during long-time work.

[0117] Specifically, the lens body 521 can adopt an OV9734 module, and the light source 522 can adopt an LED light source 522 and has two. The two LED light sources 522 are symmetrically arranged on both sides of the lens body 521. At the same time, in order to facilitate the lighting of the LED light source 522, the front end cover 51 in the embodiment is made of a translucent or transparent material, and the front end surface of the front end cover 51 is polished. The connecting pipe body 53 is also made of a translucent or transparent material, such as PC2858 medical polymer material. Of course, in other embodiments, the connecting pipe body 53 can also be made of an opaque material, such as medical stainless steel.

[0118] In the embodiment, since the lens body 521 is arranged in the first cavity 511, and the inside of the connecting pipe body 53 is separated by the connecting pipe partition 533 to form the third passage 534 and the fourth passage 535, and the third passage 534 and the backwater gap 33 of the backwater pipe 31 are communicated. In this way, the wire of the lens body 521 is arranged along the route of the first cavity 511, the third passage 534, the backwater gap 33, the backwater base 321, the spacing between the backwater base 321 and the water inlet base 221, and the wire of the lens body 521 is designed by the backwater mechanism 3, so that the structure of the uterine cavity endoscope is more compact.

[0119] Please refer to FIG. 12 and Figure 13 In the embodiment, the front end lens assembly 5 is connected with the backwater pipe 31 and the water injection pipe 21 through a lens mounting structure, and the specific structure of the lens mounting structure will be described in detail below.

[0120] The lens mounting structure includes an insert 54 and a pipe member 57. The insert 54 is arranged at the second end opening 532 of the front end lens assembly 5, and the insert 54 forms a clamping space. When the front end lens assembly 5 is connected with at least one of the backwater pipe 31 and the water injection pipe 21, the insert 54 is inserted into the backwater gap 33 and is configured not to block the backwater gap 33, and at this time the water injection pipe 21 is at least partially located in the clamping space.

[0121] In this way, when the front lens assembly 5 is connected and fixed with the water injection pipe 21 and the water return pipe 31, the water injection pipe 21 is clamped in the clamping space of the insert 54, and the insert 54 is located in the water return gap 33 without blocking the water return gap 33, which is simple in structure and reliable and stable.

[0122] Further, please refer to Figure 1 , one end of the water injection pipe 21 connected with the insert 54 is provided with a protrusion 55, and the front lens assembly 5 has a recess 56 provided at one end of the insert 54, when the insert 54 is inserted into the water return gap 33, the protrusion 55 on the water injection pipe 21 is inserted into the recess 56 of the front lens assembly 5 to form a connecting fit, and the connecting fit is configured to limit the rotation of the front lens assembly 5 relative to the water injection pipe 21 when the front lens assembly 5 is connected with the water injection pipe 21.

[0123] In this embodiment, the protrusion 55 is configured as an arc-shaped curved surface extending from one end of the water injection pipe 21 towards the insert 54, and the recess 56 is configured as a recessed area provided on the inner side surface of the front lens assembly 5 in the radial direction and matched with the shape of the protrusion 55, and when the insert 54 is inserted into the water return gap 33, the protrusion 55 can be inserted into the recess 56 and form a connecting fit with the recess 56, thereby limiting the relative rotation between the front lens assembly 5 and the water injection pipe 21, i.e. making the front lens assembly 5 rotate with the water injection pipe 21, so that when the user rotates the rotating member 42, the front lens assembly 5 can be stably driven to rotate synchronously with the rotating member 42.

[0124] In particular, in this embodiment, the recess 56 is provided on the inner circumferential surface of the connecting pipe body 53, and the recess 56 is provided such that a fitting step is formed at the connection between the insert 54 and the connecting pipe body 53, and the fitting step is configured to abut against the pipe wall of the water injection pipe 21 when the front lens assembly 5 is connected with the water injection pipe 21.

[0125] In this way, the water injection pipe 21 is in communication with the fourth channel 535, and the water injection pipe 21 is not in communication with the third channel 534, and the water return gap 33 is only in communication with the third channel 534, thereby isolating the water return gap 33 and the water injection pipe 21, so that the water injection and water return do not interfere with each other.

[0126] Please continue to refer to Figure 12 and Figure 13The lens mounting structure further comprises a pipe member 57 sleeved on the outer wall of the insert 54, which is located in the backwater gap 33 when the insert 54 is inserted into the backwater gap 33. The pipe member 57 can further improve the sealing between the front lens assembly 5 and the water injection pipe 21 and the backwater pipe 31.

[0127] Specifically, the insert 54 comprises a first insert block 541 and a second insert block 542. The first insert block 541 is connected to one end of the front lens assembly 5, and the second insert block 542 is connected to one end of the front lens assembly 5. The first insert block 541 is opposite to the second insert block 542 and is spaced apart from the second insert block 542. The clamping space is formed between the first insert block 541 and the second insert block 542.

[0128] The first face 5411 of the first insert block 541 facing the second insert block 542 and the second face 5421 of the second insert block 542 facing the first insert block 541 are both curved surfaces. When the insert 54 is inserted into the backwater gap 33, the first face 5411 and the second face 5421 are both fitted with the outer wall of the water injection pipe 21. The clamping space is formed between the first face 5411 and the second face 5421 to clamp and fix the water injection pipe 21 between the first face 5411 and the second face 5421.

[0129] The inner surface of the pipe member 57 is glued to the outer surface of the first insert block 541, the inner surface of the pipe member 57 is glued to the outer surface of the second insert block 542, and the outer surface of the pipe member 57 is glued to the inner surface of the backwater pipe 31. That is, the inner surface of the pipe member 57 is glued to the first insert block 541 and the second insert block 542, and the outer surface of the pipe member 57 is glued to the inner surface of the backwater pipe 31. This can further ensure the stability of the connection between the front lens assembly 5 and the water injection pipe 21 and the backwater pipe 31, and further enhance the sealing between the backwater gap 33 and the front lens assembly 5.

[0130] The first insert block 541 and the second insert block 542 are both connected to the second end opening 532 of the connecting pipe body 53, and a water passing gap 58 is formed between the first insert block 541 and the second insert block 542. The water passing gap 58 is located on one side of the clamping space, and the water passing gap 58 is configured to allow liquid to flow from the third channel 534 to the backwater gap 33 through the water passing gap 58. The water passing gap 58 can minimize the flow resistance of the first insert block 541 and the second insert block 542 to the backwater gap 33.

[0131] In addition, the hysteroscope further comprises a control mechanism, the control mechanism comprising a camera control switch, a light source 522 control switch and a control circuit board.

[0132] Specifically, the camera control switch can be configured to control the lens body 521 to perform a photographing function when single-clicked or short-pressed for less than a first preset time. The camera control switch is further configured to control the lens body 521 to perform a video recording function when long-pressed for greater than or equal to the first preset time. The light source 522 control switch is configured to adjust the brightness of the light source 522, which can specifically adopt a gear to adjust the brightness of the light source 522. The method of adjusting the brightness of the light source 522 by gear is a prior art, and will not be described in detail in the present application.

[0133] The circuit board, the lens body 521 and the light source 522 can be electrically connected by FPC flexible flat cable, which has good waterproof effect.

[0134] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A hysteroscopy, characterized in that, include: The housing (1) has an internal mounting cavity (11); The water injection mechanism (2) includes a water injection pipe (21) and a water injection assembly (22) that is at least partially disposed in the mounting cavity (11) and communicates with the water injection pipe (21); The water return mechanism (3) includes a water return pipe (31) and a water return assembly (32) that is at least partially disposed in the installation cavity (11) and communicates with the water return pipe (31). The water return pipe (31) is sleeved on the water injection pipe (21) and a water return gap (33) is provided between the outer wall of the water injection pipe (21) and the inner wall of the water return pipe (31). The water return gap (33) is configured as a channel for the discharge of liquid from the uterine cavity. The instrument channel assembly (4) is connected to the water injection assembly (22) in the mounting cavity (11) of the housing (1). The instrument channel assembly (4) has an instrument inlet channel (411) for instruments to enter. The instrument inlet channel (411) is connected to the water injection pipe (21) to form an instrument channel for instruments to pass through. The front-end lens assembly (5) is connected to the inlet end of at least one of the return water pipe (31) and the injection water pipe (21), and the front-end lens assembly (5) is configured to allow liquid in the injection water pipe (21) to enter the uterine cavity through the front-end lens assembly (5) and to allow liquid in the uterine cavity to enter the return water gap (33) through the front-end lens assembly (5).

2. The hysteroscope according to claim 1, characterized in that, The front-end lens assembly (5) includes: The front cover (51) has a first cavity (511) and a second cavity (512). The first cavity (511) is connected to the outside through an imaging hole (5111), and the second cavity (512) is connected to the outside through a first hole (5121). An optical imaging component (52) is disposed in the first cavity (511), and the optical imaging component (52) is configured to image through the imaging aperture (5111). The connecting tube (53) has a first end opening (531) and a second end opening (532) facing a different direction from the first end opening (531). The connecting tube (53) is configured to connect the front end cap (51) and the return water pipe (31). The first end opening (531) has a first center line, and the second end opening (532) has a second center line. The first end opening (531) is connected to the front end cap (51). When viewed along the axial direction of the imaging hole (5111), the first center line is offset from the second center line.

3. The hysteroscopic endoscope lens assembly (5) according to claim 2, characterized in that: The connecting tube body (53) also includes a connecting tube partition (533), which extends from the first end opening (531) to the second end opening (532) to form a third channel (534) and a fourth channel (535) that are independent of each other. One end of the third channel (534) is configured to communicate with at least the second cavity (512), and the other end of the third channel (534) is configured to communicate with the return gap (33) of the return water pipe (31). One end of the fourth channel (535) is configured to communicate with the intrauterine environment, and the other end of the fourth channel (535) is configured to communicate with the water injection pipe (21).

4. The hysteroscope according to claim 3, characterized in that: When viewed along the axial direction of the imaging aperture (5111), neither the first cavity (511) nor the second cavity (512) overlaps with the second channel.

5. The hysteroscope according to claim 1, characterized in that, The instrument channel assembly (4) includes: A first insert (41) is at least partially disposed in the mounting cavity (11) of the housing (1). The first insert (41) has an instrument inlet channel (411) and a first through channel (412) configured to connect the instrument inlet channel (411) with the water injection pipe (21). The first through channel (412) is also configured to connect the water injection assembly (22) with the water injection pipe (21).

6. The hysteroscope according to claim 5, characterized in that, The instrument channel assembly (4) also includes: A rotating component (42) has one end connected to the end of the first insert (41) away from the water injection pipe (21), and the other end extends at least partially to the outside of the housing (1). The rotating component (42) has an instrument guide channel (421) communicating with the instrument inlet channel (411). The rotating component (42) is configured such that when the rotating component (42) is driven to rotate, the first insert (41) and the water injection pipe (21) rotate synchronously with the rotating component (42).

7. The hysteroscope according to claim 5, characterized in that: The first plug-in (41) further includes a first one-way valve (414) disposed in the instrument inlet channel (411), and the first one-way valve (414) is configured to prevent fluid from flowing from the first through-pipe channel (412) to the instrument inlet channel (411) when the instrument passes through the first one-way valve (414).

8. The hysteroscope according to claim 6, characterized in that: The housing (1) is provided with at least two first limiting blocks on the inner wall of the mounting cavity (11). The at least two first limiting blocks are arranged at an included angle to form a limiting range. The first plug (41) is provided with at least one second limiting block. The at least one second limiting block is arranged within the limiting range. The at least one second limiting block is configured to contact the at least two first limiting blocks when the rotating member (42) rotates, so as to limit the rotation angle of the first plug (41).

9. The hysteroscopic endoscope lens assembly (5) according to claim 5, characterized in that: The water injection assembly (22) includes: The water inlet base (221) has a water inlet cavity (2211) inside, the water inlet cavity (2211) is configured to accommodate at least a portion of the first plug-in (41), and the water inlet cavity (2211) has a first water inlet end (2212); The water inlet pipe (222) is connected at one end to the first water inlet end (2212) of the water inlet base (221) and communicates with the water inlet cavity (2211); The portion of the first plug (41) located in the water inlet cavity (2211) is provided with at least one water inlet communication hole (416), which is configured to connect the first through pipe channel (412) with the water inlet cavity (2211).

10. The hysteroscope according to claim 1, characterized in that, The water return assembly (32) includes: A return water base (321) is disposed on one side of the inlet water base (221). The return water base (321) has a return water cavity (3211) inside. The return water cavity (3211) has a second inlet end (3212) and a second outlet end (3213). The second inlet end (3212) is connected to the return water pipe (31). The water outlet pipe (34) is connected at one end to the second water outlet end (3213) of the return water base (321); A return water insert (322) is at least partially disposed in the return water cavity (3211) of the return water base (321). The return water insert (322) has a second pipe passage (3221) configured to connect the return water gap (33) and the return water cavity (3211). The water injection pipe (21) is configured to pass through the return water base (321) via the second pipe passage (3221).

Images