Instrument channel structure of uterine cavity endoscope and uterine cavity endoscope

Abstract

The embodiment of the utility model discloses a uterine cavity endoscope instrument channel structure which comprises a water inlet base, a water return base, a water injection pipe and an instrument channel assembly, the water injection pipe is sleeved with a water return pipe, a water return gap is formed between the water return pipe and the water injection pipe, and the instrument channel assembly is connected with the water inlet end of the water injection pipe. A first channel is formed between the channel inlet and the channel outlet of the instrument channel assembly, and a second channel is formed between the water inlet end and the water outlet end of the water injection pipe, so that an instrument can enter the water injection pipe through the first channel and enter the uterine cavity internal environment through the second channel in the water injection pipe; therefore, water injection, water return and instrument operation are combined into the same structure, and compared with a traditional structure, the structure provided by the utility model is more compact, and the size can be compressed to be smaller.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to a hysteroscopic instrument channel structure and a hysteroscopic endoscope. Background Technology

[0002] Hysteroscopy, also known as endoscopy, is a new, minimally invasive gynecological diagnostic and treatment technique. It is a fiber optic endoscope used for examination and treatment within the uterine cavity. It includes a hysteroscope, an energy system, a light source system, an irrigation system, and an imaging system. It uses the anterior part of the endoscope to enter the uterine cavity, providing a magnified view of the observed area. Its direct and accurate approach has made it the preferred examination method for gynecological bleeding disorders and intrauterine lesions.

[0003] During hysteroscopy, the lens at the tip of the hysteroscope needs to be inserted into the patient's body to inject saline or medication into the uterine cavity. The lens assembly then captures images of the uterine cavity for the doctor to use. The doctor can then select appropriate instruments, such as biopsy forceps, based on the images. The hysteroscope is then used to access the uterine cavity for the procedure. During the procedure, blood and other fluids in the uterine cavity need to be drained.

[0004] However, due to the complex design of the various functional structures of traditional hysteroscopes, most hysteroscopes are large in size and not easy to operate, which causes greater discomfort to patients and also limits some of the doctor's operations. Utility Model Content

[0005] The purpose of this invention is to provide a hysteroscopic instrument channel structure and a hysteroscopic endoscope, aiming to solve the problems of complex structure and large size of existing hysteroscopic endoscopes.

[0006] To solve the above-mentioned technical problems, the purpose of this utility model is achieved through the following technical solution: providing a hysteroscopic instrument channel structure, comprising:

[0007] A water inlet base has a water inlet cavity, which is configured to communicate with a water inlet pipe;

[0008] A return water base is disposed on one side of the inlet water base, and the return water base has a return water cavity configured to communicate with the outlet water pipe;

[0009] The water inlet pipe has one end connected to the outlet end of the water inlet chamber of the water inlet base, and the other end passes through the water return chamber of the water return base and extends to the side of the water return base away from the water inlet base.

[0010] An instrument channel assembly is connected to the water inlet base and extends at least partially into the water inlet chamber. One end of the instrument channel assembly extending into the water inlet chamber has a channel outlet communicating with the water inlet end of the water injection pipe. The other end of the instrument channel assembly located outside the water inlet chamber has a channel inlet. A first channel for the instrument to pass through is formed between the channel inlet and the channel outlet. A second channel for the instrument to pass through is formed between the water inlet end and the water outlet end of the water injection pipe.

[0011] Furthermore, the instrument channel assembly includes:

[0012] A first insert is at least partially disposed in the mounting cavity of the housing, the first insert having an instrument inlet channel and a first through channel configured to connect the instrument inlet channel and the water injection pipe, the first through channel also being configured to connect the water injection assembly and the water injection pipe.

[0013] Furthermore, the first plug-in also includes a device guide portion communicating with one end of the first through-pipe channel away from the water injection pipe, the device guide portion being configured to guide the device and guide the device into the first through-pipe channel, and the device inlet channel being configured to be at least partially formed in the device guide portion.

[0014] Furthermore, the instrument channel assembly also includes:

[0015] A rotating component has one end connected to the end of the first insert away from the water injection pipe, and the other end at least partially extending to the outside of the housing. The rotating component has an instrument guide channel communicating with the instrument inlet channel. The rotating component is configured such that when the rotating component is driven to rotate, the first insert and the water injection pipe rotate synchronously with the rotating component.

[0016] Furthermore, 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 included angle to form a limiting range. The first plug is provided with at least one second limiting block. The at least one second limiting block is disposed 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 rotates, so as to limit the rotation angle of the first plug.

[0017] Furthermore, the first plug-in also includes a first one-way valve disposed in the instrument inlet channel, and the first one-way valve is configured to prevent fluid from flowing from the first through-tube channel to the instrument inlet channel when the instrument passes through the first one-way valve.

[0018] Furthermore, the first one-way valve is a first elastic body with a certain hardness. The first elastic body can abut against the connection between the instrument guide and the first through-tube channel. The end of the first elastic body facing the first through-tube channel is provided with a scratch that penetrates the first elastic body. The scratch can be elastically deformed to form a through hole and is configured to prevent fluid from flowing from the first through-tube channel to the instrument guide when the instrument passes through the through hole.

[0019] Furthermore, it also includes a second one-way valve, which is disposed in the instrument guide portion, and the first one-way valve is disposed between the first through-tube passage and the second one-way valve. The second one-way valve is configured to prevent fluid from flowing from the first one-way valve through the second one-way valve when the instrument passes through the second one-way valve.

[0020] Furthermore, the second one-way valve is a second elastic body with a certain hardness, and the end of the second elastic body facing the first one-way valve is provided with a small hole through which an instrument can pass.

[0021] Secondly, this application also provides a hysteroscope, including any of the hysteroscope instrument channel structures described above.

[0022] This utility model provides a hysteroscopic instrument channel structure. By connecting the instrument channel assembly and the water injection tube, and allowing the return water tube to be sleeved on the water injection tube, a return water gap is formed between the outer wall of the water injection tube and the inner wall of the return water tube. The instrument channel assembly is connected to the water inlet end of the water injection tube, and a first channel is formed between the channel inlet and the channel outlet of the instrument channel assembly. A second channel is formed between the water inlet end and the water outlet end of the water injection tube. This allows the instrument to enter the water injection tube through the first channel and enter the intrauterine environment through the second channel inside the water injection tube. Thus, water injection, water return, and instrument operation are combined into the same structure. Compared with the traditional structure, the structure provided by this application is more compact and can be compressed to a smaller size. Attached Figure Description

[0023] 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.

[0024] Figure 1 A schematic diagram of the overall structure of the hysteroscope provided in this embodiment of the utility model;

[0025] Figure 2 Provided for the embodiments of this utility model Figure 1 A schematic diagram of the cross-sectional structure;

[0026] Figure 3 A schematic diagram of the structure of the hysteroscope after removing the housing, provided in an embodiment of this utility model;

[0027] Figure 4 Provided for the embodiments of this utility model Figure 3 A schematic diagram of the cross-sectional structure;

[0028] Figure 5 Provided for the embodiments of this utility model Figure 4 A magnified structural diagram of part A in the middle;

[0029] Figure 6 Provided for the embodiments of this utility model Figure 4 A magnified structural diagram of part B in the middle section;

[0030] Figure 7 This is a schematic diagram of the front-end lens assembly structure provided in an embodiment of the present utility model;

[0031] Figure 8 A schematic diagram of the front-end lens assembly from another perspective provided in an embodiment of this utility model;

[0032] Figure 9 Provided for the embodiments of this utility model Figure 7 A schematic diagram of the cross-sectional structure;

[0033] Figure 10 A schematic diagram of the structure of the front cover as viewed along the axis of the imaging hole, provided for an embodiment of this utility model.

[0034] Figure 11 An exploded view of the front-end lens assembly provided in an embodiment of this utility model;

[0035] Figure 12 An exploded view of the lens mounting structure provided in this embodiment of the utility model;

[0036] Figure 13 An exploded view of the front-end mounting structure provided in an embodiment of this utility model.

[0037] Explanation of the markings in the image:

[0038] 11. Housing; 12. Mounting cavity; 13. Grip; 14. Inlet control valve; 15. Outlet control valve;

[0039] Water injection mechanism; 21. Water injection pipe; 22. Water injection assembly; 221. Water inlet base; 2211. Water inlet chamber; 2212. First water inlet end; 2213. First water outlet end; 222. Water inlet pipe;

[0040] Return water mechanism; 31. Return water pipe; 32. Return water assembly; 321. Return water base; 3211. Return water chamber; 3212. Second inlet end; 3213. Second outlet end; 322. Return water insert; 3221. Second pipe passage; 3222. Return water connecting hole; 33. Return water gap; 34. Outlet pipe;

[0041] Instrument channel assembly; 41. First insert; 411. Instrument inlet channel; 412. First through-pipe channel; 413. Instrument guide; 414. First check valve; 415. Second check valve; 416. Water inlet connection hole; 42. Rotating component; 421. Instrument guide channel; 43. Channel inlet; 44. Channel outlet;

[0042] Front-end lens assembly; 51, front-end cover; 511, first cavity; 5111, imaging hole; 512, second cavity; 5121, first hole; 513, end cover partition; 52, optical imaging assembly; 521, lens body; 522, light source; 53, connecting tube body; 531, first end opening; 532, second end opening; 533, connecting tube partition; 534, third channel; 535, fourth channel; 54, insert; 541, first insert block; 5411, first surface; 542, second insert block; 5421, second surface; 55, protrusion; 56, recess; 57, tube component; 58, water passage notch. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0044] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0045] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this 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.

[0046] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0047] Figure 1 and Figure 2 This invention relates to a hysteroscopy according to one embodiment of the present invention. Its overall shape is that of a gun, including a housing 1, a water injection mechanism 2, a water return mechanism 3, an instrument channel assembly 4, and a front lens assembly 5.

[0048] The housing 1 has an internal mounting cavity 11 for mounting the aforementioned water injection mechanism 2, water return mechanism 3, and instrument channel assembly 4. Typically, the housing 1 is formed by detachably connecting two half-shells via snap-fit ​​or bolt connections to create the internal mounting cavity 11. Of course, the housing 1 can also be composed of two or more components to form the aforementioned structure with the internal mounting cavity 11; this invention does not impose any specific limitations.

[0049] The water injection mechanism 2 and the water return mechanism 3 are at least partially located inside the installation cavity 11 of the housing 1. Together, they form the water channel structure of the hysteroscope, enabling the injection of saline, medication, and other liquids into the uterine cavity environment, as well as the discharge of blood, saline, medication, and other liquids from the uterine cavity. The specific structures of the water injection mechanism 2 and the water return mechanism 3 will be described in detail below.

[0050] See Figures 3 to 5 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.

[0051] The water injection assembly 22 includes a water inlet base 221 and a water inlet pipe 222. The water inlet base 221 has a water inlet cavity 2211 inside, and the water inlet cavity 2211 has a first water inlet end 2212, which is connected to the water inlet pipe 222. The water inlet pipe 222 extends to the outside of the housing 1 and connects to a water source. Typically, the water source can be a water pump with pumping capability. Through the pumping of the water pump, liquids such as saline solution and medication are pumped into the water inlet cavity 2211 of the water inlet base 221 via the water inlet pipe 222 and the first water inlet end 2212.

[0052] Typically, the housing 1 is gun-shaped to provide a grip 12 for medical personnel to hold. In order to rationally arrange the various mechanisms of the hysteroscopy, the inlet tube 222 is preferably arranged in the grip 12. Therefore, the inlet tube 222 is preferably a flexible tube to adapt to the shape and structure of the grip 12 and rationally arrange the direction of the inlet tube 222.

[0053] One end of the flexible tube is sealed to the first water inlet 2212, and the other end of the flexible tube passes through the housing 1 and extends outside the housing 1 to connect with the water source. Typically, in practical applications of hysteroscopy, a water inlet control valve 13 needs to be installed between the water inlet tube 222 and the water source to control the flow rate in the water inlet tube 222 or to shut it off. In this embodiment, the lower end of the gripping portion 12 of the housing 1 is provided with a water passage opening, through which the water inlet tube 222 or the water inlet control valve 13 can pass. To fix the water inlet control valve 13, in this 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 housing 1. The portion of the water inlet control valve 13 entering the mounting cavity 11 of the housing 1 is connected to the water inlet tube 222. The control switch of the water inlet control valve 13 is located outside the housing 1. When it is necessary to adjust the flow rate of the water inlet tube 222 or shut it off, medical personnel can manually control the control switch of the water inlet control valve 13 to achieve the above effects.

[0054] In this embodiment, the water inlet base 221 has an overall tubular structure and is detachably installed on the inner wall of the housing 1 by a number of screws. Specifically, a number of internally threaded support columns are provided on the inner wall of the housing 1, and the water inlet base 221 is detachably fixed to the aforementioned support columns by screws.

[0055] Specifically, in this embodiment, the water inlet base 221 has an opening at one end and a first water outlet 2213 at the other end. The opening end can be connected to the instrument channel assembly 4, and when the instrument channel assembly 4 is connected to the opening, the instrument channel assembly 4 is sealed to the opening, thereby forming a water inlet cavity 2211 inside the water inlet base 221 that can contain liquid. The water injection pipe 21 is connected to the first water outlet 2213 of the water inlet cavity 2211 of the water inlet base 221, and the water injection pipe 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 pipe 21.

[0056] More specifically, the water inlet base 221 also includes a water inlet insert disposed in the water inlet cavity 2211 of the water inlet base 221. The water inlet insert has a first pipe passage 412 and at least one water inlet connecting hole 416. The at least one water inlet connecting hole 416 is configured to connect the water inlet cavity 2211 and the first pipe passage 412. One end of the water injection pipe 21 is connected to the first pipe passage 412.

[0057] The water inlet insert is inserted into the water inlet cavity 2211 through the opening of the water inlet base 221, and the water inlet insert is sealed to the opening.

[0058] The first through-pipe channel 412 is formed in the portion of the water inlet insert located in the water inlet cavity 2211. At least one water inlet connecting hole 416 is disposed on the wall of the first through-pipe channel 412, thereby connecting the water inlet cavity 2211 and the first through-pipe channel 412. In this embodiment, two water inlet connecting holes 416 are provided and are symmetrically disposed on the wall of the first through-pipe channel 412.

[0059] The water injection pipe 21 is connected to the first through-pipe channel 412 of the water inlet plug so that the water injection pipe 21 is connected to the water inlet cavity 2211. That is, in this embodiment, the end of the first through-pipe channel 412 connected to the water injection pipe 21 forms the first water outlet 2213 of the water inlet cavity 2211.

[0060] Please see Figures 3 to 6 The water return mechanism 3 includes a water return pipe 31 and a water return assembly 32, which is at least partially disposed in the mounting cavity 11 and connected to the water return pipe 31.

[0061] The water return assembly 32 includes a water return base 321, an outlet pipe 34, and a water return insert 322. The water return base 321 is disposed on one side of the inlet base 221, and the interior of the water return base 321 has a water return cavity 3211, which has a second inlet end 3212 and a second outlet end 3213. The second inlet end 3212 is connected to the water return pipe 31, and the second outlet end 3213 is connected to the outlet pipe 34.

[0062] The outlet pipe 34 extends to the outside of the housing 1 and connects to the pumping mechanism. Typically, the pumping mechanism can be a water pump with pumping capability. Through the pumping of the water pump, a certain suction force is generated to pump out the blood, saline, medicine and other liquids in the uterine cavity through the return pipe 31, the second inlet end 3212, the return chamber 3211 and the second outlet end 3213.

[0063] Typically, the housing 1 is gun-shaped to provide a grip 12 for medical personnel to hold. In order to rationally arrange the various mechanisms of the hysteroscopy, the water outlet tube 34 is preferably arranged in the grip 12. Therefore, the water outlet tube 34 is preferably a flexible tube to adapt to the shape and structure of the grip 12 and rationally arrange the direction of the inlet and outlet tubes 34.

[0064] One end of the flexible tube is sealed to the second water outlet 3213, and the other end of the flexible tube passes through the housing 1 and extends outside the housing 1 to connect with the pumping mechanism. Typically, in practical applications of hysteroscopy, a water outlet control valve 14 needs to be installed between the water outlet pipe 34 and the pumping mechanism to control the flow rate in the water outlet pipe 34 or to shut it off. In this embodiment, the lower end of the gripping part 12 of the housing 1 is provided with a water passage opening, through which the water outlet pipe 34 or the water outlet control valve 14 can pass. To fix the water outlet control valve 14, in this 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 housing 1. The portion of the water outlet control valve 14 entering the mounting cavity 11 of the housing 1 is connected to the water outlet pipe 34. The control switch of the water outlet control valve 14 is located outside the housing 1. When it is necessary to adjust the flow rate of the water outlet pipe 34 or shut it off, medical personnel can manually control the control switch of the water outlet control valve 14 to achieve the above effects.

[0065] In this embodiment, since both the inlet pipe 222 and the outlet pipe 34 are located at the lower end of the gripping part 12 of the housing 1, in order to facilitate processing and ensure a certain structural strength, the inlet pipe 222 and the outlet pipe 34 share the same water passage opening. The inlet control valve 13 and the outlet control valve 14 are installed on the same valve base. In this way, the inlet control valve 13 and the outlet control valve 14 can be installed at the water passage opening of the housing 1 with only one installation operation.

[0066] Please continue reading. Figure 2 and Figure 3 In this embodiment, the return water base 321 has an overall tubular structure and is detachably installed on the inner wall of the housing 1 by a number of screws. Specifically, the inner wall of the housing 1 is provided with a number of internally threaded supports, and the return water base 321 is detachably fixed to the aforementioned supports by screws. In this embodiment, the return water base 321 has the same structure as the inlet water base 221, the difference being the different structural dimensions in some positions. This design reduces the difficulty of design and development and also plays a certain role in preventing mistakes during the production and assembly process.

[0067] Specifically, in this embodiment, the return water base 321 has an opening at one end and a second water outlet 3213 at the other end. The opening end can be connected to the return water insert 322, and when the return water insert 322 is connected to the opening, the return water insert 322 and the opening are sealed together, forming a return water cavity 3211 inside the return water base 321 that can contain liquid. The return water pipe 31 is connected to the second water outlet 3213 of the return water cavity 3211 of the return water base 321, and the return water pipe 31 can extend away from the return water base 321, so that the liquid in the intrauterine environment can flow back to the return water cavity 3211 of the return water base 321 through the return water pipe 31.

[0068] In this embodiment, the return water plug 322 is at least partially disposed in the return water cavity 3211 of the return water base 321. The return water plug 322 has a second pipe passage 3221. The water injection pipe 21 is constructed to pass through the return water base 321 via the second pipe passage 3221, and the connection between the water injection pipe 21 and the second pipe passage 3221 is sealed to ensure the sealing of the connection between the second pipe passage 3221 and the water injection pipe 21, that is, to ensure the sealing of the return water cavity 3211.

[0069] Meanwhile, the return water plug 322 is provided with at least one return water connecting hole 3222, which is configured to connect the return water cavity 3211 and the second through-pipe channel 3221. One end of the return water pipe 31 is connected to the second through-pipe channel 3221 of the return water plug 322. In this embodiment, the end of the second through-pipe channel 3221 connected to the return water pipe 31 forms the aforementioned second water inlet end 3212.

[0070] For details, please refer to Figures 2-6 After the water injection pipe 21 passes through the second through-pipe channel 3221, it enters the return water pipe 31. That is, the return water pipe 31 is sleeved on the water injection pipe 21, and a return water gap 33 is provided between the outer wall of the water injection pipe 21 and the inner wall of the return water pipe 31. The second through-pipe channel 3221 is configured to connect the return water gap 33 and the return water cavity 3211, so that the liquid in the uterine cavity environment can flow back to the second through-pipe channel 3221 through the return water gap 33, and can enter the return water cavity 3211 through the return water connection.

[0071] In this embodiment, the water injection pipe 21 passes through the second through-pipe channel 3221, and a return water gap 33 is also provided between the water injection pipe 21 and the wall of the second through-pipe channel 3221. The return water connecting hole 3222 is provided on the wall of the second through-pipe channel 3221, and in this embodiment, two return water connecting holes 3222 are symmetrically arranged.

[0072] The water injection pipe 21 and the water return pipe 31 extend together in a direction away from the water inlet base 221. When water is injected, liquid is sprayed out from the water injection pipe 21, and when water is returned, liquid enters from the water return gap 33 of the water return pipe 31. In this embodiment, both the water injection pipe 21 and the water return pipe 31 are rigid pipes.

[0073] Please see Figure 2 , Figure 4 and Figure 5 The hysteroscope is also equipped with an instrument channel assembly 4, which 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.

[0074] Specifically, the instrument channel assembly 4 is connected to the water inlet base 221 and extends at least partially into the water inlet chamber 2211. One end of the instrument channel assembly 4 extending into the water inlet chamber 2211 has a channel outlet 44 that connects to the water inlet end of the water injection pipe 21. The other end of the instrument channel assembly 4 located outside the water inlet chamber 2211 has a channel inlet 43. A first channel for the instrument to pass through is formed between the channel inlet 43 and the channel outlet 44. A second channel for the instrument to pass through is formed between the water inlet end and the water outlet end of the water injection pipe 21.

[0075] The first and second channels together form an instrument channel for instruments to pass through the outside of the housing 1 and through the inside of the housing 1 to enter the intrauterine environment.

[0076] In this embodiment, the instrument channel assembly 4 includes a first plug-in 41, which is at least partially disposed in the mounting cavity 11 of the housing 1. The first plug-in 41 has an instrument inlet channel 411 and a first through-pipe channel 412 configured to connect the instrument inlet channel 411 and the water injection pipe 21. The first through-pipe channel 412 is also configured to connect the water injection assembly 22 and the water injection pipe 21.

[0077] Specifically, the first insert 41 is inserted into the water inlet cavity 2211 through the opening of the aforementioned water inlet base 221, and the first insert 41 is sealed to the opening. The portion of the first insert 41 inserted into the water inlet cavity 2211 forms a first pipe passage 412, the outlet of which is the aforementioned channel outlet 44, and the channel outlet 44 is connected to the water injection pipe 21. That is, the portion of the first insert 41 located in the water inlet cavity 2211 is equivalent to the aforementioned water inlet insert.

[0078] The first insert 41, located outside the water inlet chamber 2211, forms an instrument inlet channel 411, the entrance of which is the aforementioned channel inlet 43. The diameter of this channel inlet 43 is larger than the diameter of the channel outlet 44, and the instrument inlet channel 411 is generally funnel-shaped. This funnel shape guides the instrument and guides it into the instrument guide portion 413 in the first through-pipe channel 412, facilitating instrument insertion. In other words, the first insert 41 also includes an instrument guide portion 413 connected to the end of the first through-pipe channel 412 away from the water inlet pipe 21. The instrument guide portion 413 is configured as a guide and guides the instrument into the first through-pipe channel 412; that is, the instrument inlet channel 411 is formed within the instrument guide portion 413, which is part of the first insert 41.

[0079] In this embodiment, the instrument guide 413 (i.e., the instrument inlet channel 411) and the portion of the first plug-in 41 located in the water inlet cavity 2211 are integrally connected to form the first plug-in 41.

[0080] Therefore, a first channel for instruments to pass through is formed between the instrument inlet channel 411 (i.e., channel inlet 43) and the first tube passage 412 (i.e., channel outlet 44), while a second channel for instruments to pass through is formed between the inlet and outlet ends of the water inlet tube 21. The instruments enter the intrauterine environment through the first channel and the second channel.

[0081] Please continue reading. Figure 5 To prevent the liquid in the inlet chamber 2211 from flowing back into the instrument inlet channel 411 of the instrument guide 413 and causing leakage, a first one-way valve 414 is provided in the instrument guide 413. The first one-way valve 414 is configured to prevent fluid from flowing from the first through-pipe channel 412 to the instrument guide 413 when the instrument passes through the first one-way valve 414.

[0082] The first one-way valve 414 is a first elastic body with a certain hardness. The first elastic body can abut against the connection between the instrument guide 413 and the first through-tube channel 412. The end of the first elastic body facing the first through-tube channel 412 is provided with a scratch that penetrates the first elastic body. The scratch can be elastically deformed to form a through hole and is configured to prevent fluid from flowing from the first through-tube channel 412 to the instrument guide 413 when the instrument passes through the through hole.

[0083] In this embodiment, the first elastomer is silicone or rubber with a certain hardness. That is, the first one-way valve 414 is made of silicone or rubber with a certain hardness and elastic deformation capability. A cross-shaped scratch is provided on the end of the first elastomer facing the first through-tube channel 412. The cross-shaped scratch penetrates the first elastomer, so that when the instrument passes through the cross-shaped scratch of the first elastomer, the cross-shaped scratch can elastically deform and form a through hole. Since the first elastomer has sufficient elasticity at the cross-shaped scratch, the through hole formed by the first elastomer can form a sufficient seal with the instrument, thereby preventing the fluid from flowing from the first through-tube channel 412 to the instrument guide part 413, thus achieving the effect of one-way conduction.

[0084] Specifically, the instrument guide 413 is provided with a first step portion. The shape of the first step portion is adapted to the shape of the first one-way valve 414, and when the first elastic body is installed in the first step portion, the first elastic body can press against the inner wall of the instrument guide 413 located at the first step portion under its own elasticity.

[0085] Please continue reading. Figure 5To further improve the sealing effect, a second one-way valve 415 is also provided in the instrument guide 413. The first one-way valve 414 is disposed between the first through-pipe channel 412 and the second one-way valve 415. 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.

[0086] Specifically, the second one-way valve 415 is disposed in the first step portion and is fitted to the first one-way valve 414. The second one-way valve 415 is a second elastic body with a certain degree of hardness, and the end of the second elastic body facing the first one-way valve 414 is provided with a small hole for instruments to pass through.

[0087] In this embodiment, the diameter of the orifice is 1 mm. Of course, in other embodiments, the diameter of the orifice can also be other sizes, such as 1.5 mm, 2 mm, etc. When the instrument passes through the orifice, it can compress the inner wall of the orifice, causing the orifice to undergo elastic deformation, thereby forming a sufficient seal between the inner wall of the orifice and the instrument, thus achieving a good unidirectional conduction effect.

[0088] Please continue reading. Figure 5 The instrument channel assembly 4 also includes a rotating member 42, one end of which is 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 member 42 has an instrument guide channel 421 communicating with the instrument inlet channel 411. The rotating member 42 is configured such that when the rotating member 42 is driven to rotate, the first insert 41 and the water injection pipe 21 rotate synchronously with the rotating member 42.

[0089] In this embodiment, the rotating member 42 is generally shaped like a trumpet, with one end connected to the instrument guide 413 located in the mounting cavity 11 of the housing 1, and the other end extending to the outside of the housing 1. The part of the rotating member 42 extending to the outside of the housing 1 has a trumpet shape, which forms the instrument guide channel 421.

[0090] Furthermore, in this embodiment, one end of the rotating member 42 located outside the housing 1 is bent outward along the radial direction of the flared opening to form a knob that can be manually operated by the user. The knob is provided with corresponding anti-slip texture to facilitate user operation. By turning the knob, the user can drive the first plug-in 41 to rotate, thereby driving the water inlet pipe 21 and the return pipe 31 to rotate synchronously, and in turn driving the front end lens assembly 5 at the end of the return pipe 31 to rotate, which helps the user find a suitable shooting angle or a suitable instrument operation angle.

[0091] Specifically, the instrument guide 413 is provided with a second stepped portion, which is adjacent to the first stepped portion and located on the side of the first stepped portion away from the first through-tube channel 412, and the diameter of the second stepped portion is larger than the diameter of the first stepped portion. One end of the rotating member 42 that connects to the instrument guide 413 is located in the aforementioned second stepped portion, and the rotating member 42 can be connected and fixed to the inner wall of the instrument guide 413 via a snap-fit ​​structure, threads, or bolts.

[0092] Please see Figures 2 to 4 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-in 41 is provided with at least one second limiting block. The at least one second limiting block is disposed 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-in 41.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] In this embodiment, by setting the first center line of the first end opening 531 to deviate from the second center line of the second end opening 532, the overall shape of the connecting tube 53 is curved or streamlined, so that the imaging hole 5111 is not on the same straight line as the water inlet end of the return water pipe 31 and the water outlet end of the injection water pipe 21. This design ensures that the front lens assembly 5 does not obstruct the operation of the instrument.

[0098] Furthermore, 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 an independent third channel 534 and a fourth channel 535. 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 inlet water pipe 21. With this design, liquid in the intrauterine environment can flow back to the return gap 33 through the third channel 534, and then be discharged through the return gap 33, the return water cavity 3211, and the outlet water pipe 34. Physiological saline, medication, etc., can enter the intrauterine environment through the inlet water pipe 222, the inlet water cavity 2211, the inlet water pipe 21, and the fourth channel 535.

[0099] Furthermore, the front cover 51 also includes an end cover partition 513, which is configured to separate the first cavity 511 and the second cavity 512. When viewed along the axial direction of the imaging hole 5111, the first cavity 511 and the second cavity 512 do not overlap. In this embodiment, although the end cover partition 513 separates the first cavity 511 and the second cavity 512, the first cavity 511 and the second cavity 512 are simultaneously connected to the third channel 534, that is, the first cavity 511 and the second cavity 512 are not completely independent of each other.

[0100] In this embodiment, when viewed along the axial direction of the imaging hole 5111, the first cavity 511 and the second cavity 512 do not overlap. With this design, when the optical imaging component 52 is installed in the first cavity 511, the optical imaging component 52 will not obstruct the return flow of liquid in the first hole 5121 and the second cavity 512, and will not affect the water return effect.

[0101] Furthermore, when viewed along the axial direction of the imaging aperture 5111, neither the first cavity 511 nor the second cavity 512 overlaps with the fourth channel 535. This design ensures that the fourth channel 535, i.e., the outlet end of the water injection tube 21, is located entirely on one side of the first cavity 511 and the second cavity 512, thus not interfering with the operation of the instrument or the injection of fluids such as saline. It also allows for the compression of the front-end lens assembly 5 without affecting the instrument or the water injection effect, minimizing the volume of the front-end lens assembly 5 and reducing patient discomfort during use.

[0102] Furthermore, when viewed along the axial direction of the imaging aperture 5111, the first aperture 5121 is at least partially configured to be further away from the fourth channel 535 than the imaging aperture 5111. This design allows the imaging aperture 5111 to be closer to the center of the front cover 51, rather than closer to the edge of the front cover 51. This allows the imaging aperture 5111 to be machined into a larger diameter circular hole, and the optical imaging assembly 52 can be positioned closer to the center of the front cover 51 to obtain more light, thereby meeting the imaging requirements of the optical imaging assembly 52.

[0103] Furthermore, when viewed along the axial direction of the imaging aperture 5111, the first aperture 5121 has a first width along a first direction and a second width along a second direction, wherein the first width is greater than the second width and the first width is greater than the diameter of the imaging aperture 5111. This design allows the first aperture 5121 to form a flat aperture structure with a wide diameter at one end and a narrow diameter at the other, thereby enabling the formation of a first aperture 5121 with the largest possible cross-sectional area on the front end cover 51, which has a limited total area, thus achieving the best possible backflow effect on the volume-constrained front end cover 51.

[0104] Furthermore, the connecting tube 53 has an inclination angle, defined as the 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, which will not be listed again. This design allows the optical imaging component 52 to obtain a wider imaging angle.

[0105] In a further embodiment, the optical imaging assembly 52 includes a lens body 521 and at least one light source 522, wherein at least one of the light sources 522 is connected to the outer surface of the lens body 521, and when viewed along the axial direction of the imaging aperture 5111, the lens body 521 is at least partially exposed to the imaging aperture 5111.

[0106] The front cover 51 has a front inner surface and at least one circumferential inner surface other than the front inner surface. At least one of the light sources 522 is spaced apart from at least one of the front inner surface and at least one of the circumferential inner surfaces. The spaced distance between the light source 522 and at least one of the front inner surface and at least one axial inner surface of the front cover 51 can provide a certain amount of heat dissipation space and more effectively reduce the heat generated by the light source 522 during long-term operation.

[0107] Specifically, the lens body 521 can use an OV9734 module, and the light source 522 can be an LED light source 522, with two of them. The two LED light sources 522 are symmetrically arranged on both sides of the lens body 521. To facilitate the illumination of the LED light sources 522, the front end cover 51 in this embodiment is made of a semi-transparent or transparent material, and the front end surface of the front end cover 51 is polished. The connecting tube 53 is also made of a semi-transparent or transparent material, such as PC2858 medical polymer material. Of course, in other embodiments, the connecting tube 53 can also be made of an opaque material, such as medical stainless steel.

[0108] In this embodiment, the lens body 521 is disposed in the first cavity 511, and the connecting tube 53 is separated by a connecting tube partition 533 to form a third channel 534 and a fourth channel 535, thereby connecting the third channel 534 with the return water gap 33 of the return water pipe 31. Thus, the wiring of the lens body 521 is arranged along the route of the first cavity 511, the third channel 534, the return water gap 33, the return water base 321, and the distance between the return water base 321 and the inlet water base 221. Through the above-mentioned design of the lens body 521 utilizing the return water mechanism 3 for wiring, the structure of the hysteroscope is made more compact.

[0109] Please refer to Figure 12 and Figure 13 In this embodiment, the front-end lens assembly 5 is connected to the return water pipe 31 and the water injection pipe 21 through a lens mounting structure. The specific structure of the lens mounting structure will be described in detail below.

[0110] The lens mounting structure includes an insert 54 and a tube member 57. The insert 54 is disposed at the second end opening 532 of the front lens assembly 5, and the insert 54 forms a clamping space. When the front lens assembly 5 is connected to at least one of the return water pipe 31 and the injection water pipe 21, the insert 54 is inserted into the return water gap 33 and is configured not to block the return water gap 33, while the injection water pipe 21 is at least partially located in the clamping space.

[0111] With this design, when the front end lens assembly 5 is connected and fixed to 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. The structure is simple, reliable and stable.

[0112] For further details, please refer to Figure 1 The water injection pipe 21 has a protrusion 55 at one end connected to the insert 54, and the front lens assembly 5 has a recess 56 at one end of the insert 54. When the insert 54 is inserted into the return water 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 connection. The connection is configured to restrict the rotation of the front lens assembly 5 relative to the water injection pipe 21 when the front lens assembly 5 is connected to the water injection pipe 21.

[0113] In this embodiment, the protrusion 55 is constructed as an arc-shaped curved surface extending from one end of the water inlet pipe 21 toward the insert 54 toward the insert 54. The recess 56 is constructed as a recessed area on the inner side of the front lens assembly 5 in the radial direction that matches the shape of the protrusion 55. When the insert 54 is inserted into the return water gap 33, the protrusion 55 can be inserted into the recess 56 and form a connection with the recess 56, thereby restricting the relative rotation between the front lens assembly 5 and the water inlet pipe 21. This ensures that the front lens assembly 5 rotates with the water inlet pipe 21, so that when the user twists the rotating part 42, the front lens assembly 5 can be stably driven to rotate synchronously with the rotating part 42.

[0114] Specifically, in this embodiment, the recess 56 is provided on the inner circumferential surface of the connecting tube 53, and the recess 56 is provided such that a mating step is formed at the connection between the insert 54 and the connecting tube 53. The mating step is configured to abut against the wall of the water injection pipe 21 when the front lens assembly 5 is connected to the water injection pipe 21.

[0115] This design connects the water injection pipe 21 to the fourth channel 535, but not to the third channel 534. The return water gap 33 is only connected to the third channel 534, thus isolating the return water gap 33 from the water injection pipe 21 and preventing water injection and return from interfering with each other.

[0116] Please continue reading. Figure 12 and Figure 13 The lens mounting structure also includes a tube component 57, which is sleeved on the outer wall of the insert 54. When the insert 54 is inserted into the return water gap 33, the tube component 57 is located in the return water gap 33. The tube component 57 further improves the sealing between the front lens assembly 5 and the water injection pipe 21 and the return water pipe 31.

[0117] Specifically, the insert 54 includes a first insert block 541 and a second insert block 542. The first insert block 541 is connected to one end of the front-end lens assembly 5, and the second insert block 542 is connected to one end of the front-end lens assembly 5. The first insert block 541 and the second insert block 542 are opposite to each other and spaced apart. The clamping space is formed between the first insert block 541 and the second insert block 542.

[0118] The first surface 5411 of the first insert 541 facing the second insert 542 and the second surface 5421 of the second insert 542 facing the first insert 541 are both curved surfaces. When the insert 54 is inserted into the return water gap 33, the first surface 5411 and the second surface 5421 are both in contact with the outer wall of the water injection pipe 21, and a clamping space is formed between the first surface 5411 and the second surface 5421 to clamp and fix the water injection pipe 21 between the first surface 5411 and the second surface 5421.

[0119] The inner surface of the pipe component 57 is glued to the outer surface of the first insert 541, the inner surface of the pipe component 57 is glued to the outer surface of the second insert 542, and the outer surface of the pipe component 57 is glued to the inner surface of the return water pipe 31. That is, the inner surface of the pipe component 57 is glued to the first insert 541 and the second insert 542, and the outer surface is glued to the inner surface of the return water pipe 31. While further ensuring the stability of the direct connection between the front-end lens assembly 5 and the water injection pipe 21 and the return water pipe 31, it can further enhance the sealing performance between the return water gap 33 and the front-end lens assembly 5.

[0120] Both the first insert 541 and the second insert 542 are connected to the second end opening 532 of the connecting pipe body 53, and a water passage notch 58 is formed between the first insert 541 and the second insert 542. The water passage notch 58 is located on one side of the clamping space and is configured to allow liquid to flow from the third channel 534 through the water passage notch 58 to the return water gap 33. The water passage notch 58 can minimize the obstruction of the return water gap 33 by the first insert 541 and the second insert 542.

[0121] In addition, the hysteroscope also includes a control mechanism, which includes a camera control switch, a light source 522 control switch, and a control circuit board. The control circuit board, camera control switch, and light source 522 control switch are all located on the grip portion 12 of the housing 1. The camera control switch and the light source 522 control switch are electrically connected to the control circuit board via cables. The control circuit board is electrically connected to the lens body 521 and the light source 522 via cables.

[0122] Specifically, the camera control switch can be configured to control the lens body 521 to perform the photo-taking function when clicked or pressed briefly for a time less than a first preset time. The camera control switch can also be configured to control the lens body 521 to perform the video-taking function when pressed and held for a time 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. Specifically, it can adopt a level-adjustment method for the brightness of the light source 522. This level-adjustment method is existing technology and will not be described in detail in this utility model.

[0123] The circuit board, lens body 521, and light source 522 can be electrically connected using an FPC flexible flat cable, which has good waterproof performance.

[0124] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A hysteroscopic instrument channel structure, characterized in that, include: The water inlet base (221) has a water inlet cavity (2211) configured to communicate with the water inlet pipe (222); 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), which is configured to communicate with the outlet water pipe (34). The water inlet pipe (21) is connected at one end to the outlet end of the water inlet chamber (2211) of the water inlet base (221), and at the other end passes through the water return chamber (3211) of the water return base (321) and extends to the side of the water return base (321) away from the water inlet base (221). The instrument channel assembly (4) is connected to the water inlet base (221) and extends at least partially into the water inlet cavity (2211). One end of the instrument channel assembly (4) extending into the water inlet cavity (2211) has a channel outlet (44) communicating with the water inlet end of the water injection pipe (21). The other end of the instrument channel assembly (4) located outside the water inlet cavity (2211) has a channel inlet (43). A first channel for the instrument to pass through is formed between the channel inlet (43) and the channel outlet (44). A second channel for the instrument to pass through is formed between the water inlet end and the water outlet end of the water injection pipe (21).

2. The hysteroscopic instrument channel structure 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).

3. The hysteroscopic instrument channel structure according to claim 2, characterized in that, The first plug-in (41) further includes a device guide (413) communicating with one end of the first through-pipe channel (412) away from the water injection pipe (21), the device guide (413) being configured to guide the device and guide the device into the first through-pipe channel (412), and the device inlet channel (411) being configured to be at least partially formed in the device guide (413).

4. The hysteroscopic instrument channel structure according to claim 2, 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).

5. The hysteroscopic instrument channel structure according to claim 4, 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).

6. The hysteroscopic instrument channel structure according to claim 3, 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).

7. The hysteroscopic instrument channel structure according to claim 6, characterized in that: The first one-way valve (414) is a first elastic body with a certain hardness. The first elastic body can abut against the connection between the instrument guide (413) and the first through-tube channel (412). The end of the first elastic body facing the first through-tube channel (412) is provided with a scratch that penetrates the first elastic body. The scratch can be elastically deformed to form a through hole and is configured to prevent fluid from flowing from the first through-tube channel (412) to the instrument guide (413) when the instrument passes through the through hole.

8. The hysteroscopic instrument channel structure according to claim 6, characterized in that, It also includes a second check valve (415) disposed in the instrument guide (413), and a first check valve (414) disposed between the first through-tube passage (412) and the second check valve (415). The second check valve (415) is configured to prevent fluid from flowing from the first check valve (414) through the second check valve (415) when the instrument passes through the second check valve (415).

9. The hysteroscopic instrument channel structure according to claim 8, characterized in that: The second one-way valve (415) is a second elastic body with a certain hardness. The end of the second elastic body facing the first one-way valve (414) is provided with a small hole through which instruments can pass.

10. A hysteroscopy, characterized in that: Includes the hysteroscopic instrument channel structure as described in any one of claims 1-9.

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