CN115429208A

CN115429208A - Hysteroscope

Info

Publication number: CN115429208A
Application number: CN202211365206.5A
Authority: CN
Inventors: 陆海同
Original assignee: Hangzhou Sikang New Medical Technology Co ltd
Current assignee: Hangzhou Sikang New Medical Technology Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2022-12-06

Abstract

Some embodiments of the present description provide a hysteroscope comprising: an insertion tube including a first passage and a second passage extending in an axial direction of the insertion tube; the liquid pump assembly is used for pumping the uterus swelling liquid through the first channel and the second channel; the liquid discharge pipe comprises a first liquid discharge pipe and a second liquid discharge pipe, the near end of the first channel is communicated with the first liquid discharge pipe, and the near end of the second channel is communicated with the second liquid discharge pipe; and the output control mechanism can control the first channel to be communicated with the liquid pump assembly or the first liquid discharge pipe and control the second channel to be communicated with the liquid pump assembly or the second liquid discharge pipe.

Description

Hysteroscope

Technical Field

The specification relates to the technical field of medical instruments, in particular to a hysteroscope.

Background

The hysteroscope is a new and minimally invasive gynecological diagnosis and treatment technology, is an endoscope for examining and treating the uterine cavity, and is characterized in that the distal end of the hysteroscope is extended into the uterine cavity of a patient, the inside of the uterine cavity is observed through a lens arranged at the distal end of the hysteroscope, and the observed part has an amplification effect, so that the hysteroscope becomes a preferred examination instrument for gynecological hemorrhagic diseases and intrauterine lesions intuitively and accurately. The hysteroscope can directly inspect the pathological changes in the uterine cavity of a patient and can quickly and accurately diagnose the diseases in the uterine cavity. A liquid channel for the flow of uterine cavity liquid is also arranged in the hysteroscope. However, because the size of current hysteroscope itself is less to inside needs to reserve the space that sets up the module of making a video recording, consequently liquid passage's size is comparatively narrow and small, and this speed that can lead to carrying uterus swelling liquid is low, influences medical personnel's operating efficiency.

Disclosure of Invention

Some embodiments of the present description provide a hysteroscope comprising: an insertion tube including a first channel and a second channel, the first channel and the second channel extending in an axial direction of the insertion tube; a liquid pumping assembly for pumping uterine distention liquid through the first and second channels; the liquid discharge pipe comprises a first liquid discharge pipe and a second liquid discharge pipe, the near end of the first channel is communicated with the first liquid discharge pipe, and the near end of the second channel is communicated with the second liquid discharge pipe; and the output control mechanism can control the first channel to be communicated with the liquid pump assembly or the first liquid discharge pipe and control the second channel to be communicated with the liquid pump assembly or the second liquid discharge pipe.

In some embodiments, the distal end of the first channel and the distal end of the second channel have openings disposed on a sidewall of the insertion tube.

In some embodiments, the output control mechanism comprises a first three-way valve and a second three-way valve; the first three-way valve is switched to communicate the first channel with the liquid pump assembly or the first liquid discharge pipe; and the second three-way valve is switched to communicate the second channel with the liquid pump assembly or the second liquid discharge pipe.

In some embodiments, the output control mechanism includes a first drive and a second drive, the first three-way valve includes a first reversing feature, and the second three-way valve includes a second reversing feature; the first driving piece is connected with the first reversing structure, and the second driving piece is connected with the second reversing structure; the hysteroscope further comprises a controller, and the controller is in communication connection with the first driving piece and the second driving piece.

In some embodiments, the hysteroscope further comprises a lens in communicative connection with the controller; the controller is configured to: determining a turbidity of the uterine distention fluid within a uterine cavity based on the image acquired by the lens; in response to the turbidity being greater than a turbidity threshold value, controlling the first reversing mechanism by the first drive member to communicate the first passage with the first drain pipe and controlling the second reversing mechanism by the second drive member to communicate the second passage with the liquid pump assembly, or controlling the second reversing mechanism by the second drive member to communicate the second passage with the second drain pipe and controlling the first reversing mechanism by the first drive member to communicate the first passage with the liquid pump assembly; or determining the turbidity of the uterine distention fluid in the uterine cavity based on the image acquired by the lens; responding to the turbidity being larger than a turbidity threshold value, respectively controlling the first reversing structure and the second reversing structure through the first driving piece and the second driving piece so that the first channel and the second channel are respectively communicated with the first liquid discharge pipe and the second liquid discharge pipe; the first reversing mechanism and the second reversing mechanism are respectively controlled by the first driving piece and the second driving piece so that the first channel and the second channel are respectively communicated with the liquid pump assembly.

In some embodiments, a pressure sensor is also included for detecting pressure within the uterine cavity and generating a pressure signal.

In some embodiments, the controller is configured to: judging whether the first channel and/or the second channel is blocked or not based on the pressure signal generated by the pressure sensor and the flow direction of the uterine distention liquid of the first channel and the second channel; in response to the first passage becoming blocked, controlling the first reversing structure by the first drive member to place the first passage in communication with the fluid pump assembly; and in response to the second passage being blocked, controlling the second reversing structure by the second driver to place the second passage in communication with the liquid pump assembly.

In some embodiments, the flow rate detector is further configured to detect a flow rate of the liquid in the first three-way valve and the second three-way valve.

In some embodiments, the insertion tube is linear, and an included angle of 10-30 degrees is formed between a main optical axis of the lens and a central axis of the insertion tube.

In some embodiments, the insertion tube includes a straight tube and an elbow tube, one end of the elbow tube is connected to the straight tube, the lens is disposed at the other end of the elbow tube, a main optical axis of the lens is parallel to a tangent line of the other end of the elbow tube, and an included angle of 10-30 degrees is formed between the main optical axis of the lens and a central axis of the straight tube.

Drawings

The present description will be further explained by way of exemplary embodiments, which will be described in detail by way of the accompanying drawings. These embodiments are not intended to be limiting, and in these embodiments like numerals are used to indicate like structures, wherein:

FIG. 1 is a schematic structural view of a hysteroscope according to some embodiments described herein;

FIG. 2 is a cross-sectional view of a hysteroscope shown in accordance with some embodiments of the present description;

FIG. 3 is a cross-sectional view of an insertion tube according to some embodiments of the present description;

FIG. 4 is a cross-sectional view of an insertion tube according to further embodiments of the present disclosure;

FIG. 5 is a cross-sectional view of an insertion tube according to further embodiments described herein;

FIG. 6 is a schematic structural view of an insertion tube according to some embodiments of the present description;

FIG. 7 is a schematic diagram of a first three-way valve according to some embodiments herein;

FIG. 8 is a cross-sectional view of a first three-way valve according to some embodiments herein;

figure 9 is a block diagram of a hysteroscope, according to some embodiments herein.

Reference numerals: a hysteroscope 100; an insertion tube 11; a first channel 111; a second channel 112; a straight pipe 113; an elbow 114; a first port 115; a second port 116; a first opening 117; a second opening 118; an instrument channel 1191; a lens channel 1192; an output control mechanism 12; a first three-way valve 121; a first commutation structure 1211; a first communication port 1212; a second communication port 1213; a third communication port 1214; a second three-way valve 122; a second commutation structure 1221; a third three-way valve 123; a first driving member 124; a second driver 125; a liquid pump assembly 13; a drain pipe 14; the first drain pipe 141; a second drain pipe 142; a lens 15; a flexible circuit board 16; a handle 17; a controller 18; a flow rate detector 19; a pressure sensor 20.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only examples or embodiments of the present description, and that for a person skilled in the art, without inventive effort, the present description can also be applied to other similar contexts on the basis of these drawings. Unless otherwise apparent from the context, or otherwise indicated, like reference numbers in the figures refer to the same structure or operation.

As used in this specification and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements. The term "based on" is "based, at least in part, on". The term "some embodiments" means "at least one embodiment"; the term "further embodiments" means "at least one further embodiment", the relevant definitions of the other terms being given in the following description.

Because the position of the product in this specification can be changed at will, the terms "upper", "lower", "left", "right", "front", "back", and the like in this specification only indicate relative positional relationships, and are not intended to limit absolute positional relationships. In addition, the "front end" and the "distal end" described in the present specification refer to the end distant from the operator, and the "rear end", "proximal end" and "distal end" refer to the end close to the operator.

The present specification provides a hysteroscope, the distal end of which can be inserted into the uterine cavity of a patient, and an operator can observe the inside of the uterine cavity through a lens arranged at the distal end of the hysteroscope. When the hysteroscope is used, uterine distention liquid is conveyed into the uterine cavity by the liquid channel for uterine distention operation so as to increase the volume of the uterine cavity and facilitate observation or operation. In some embodiments, the hysteroscope may include two fluid channels for delivering a fluid (e.g., a uterine distention fluid), and the operator may control the fluid channels to communicate with the fluid pump assembly via the output control mechanism of the hysteroscope to deliver the uterine fluid to the uterine cavity or to communicate with the drain to drain the uterine fluid from the patient. Under some conditions, the output control device of the hysteroscope is used for realizing the switching of the functions of the liquid channels, so that the transportation speed of the uterus swelling liquid can be increased, and the operation efficiency is improved.

In some embodiments, as shown in figures 1, 2, and 9, hysteroscope 100 may include an insertion tube 11, an output control mechanism 12, a fluid pump assembly 13, and a drain tube 14. The insertion tube 11 may include a first passage 111 and a second passage 112, and the first passage 111 and the second passage 112 may extend in an axial direction of the insertion tube 11. The insertion tube 11 may be used to extend into the uterine cavity of a patient. The liquid pump assembly 13 may be used to pump uterine distention liquid through the first and

second passages

111, 112 to the uterine cavity. Discharge line 14 may include a first discharge line 141 and a second discharge line 142, with the proximal end of first channel 111 communicating with first discharge line 141 and the proximal end of second channel 112 communicating with second discharge line 142. The uterine distention fluid in the uterine cavity of the patient can be discharged out of the patient through the first liquid discharge pipe 141 and/or the second liquid discharge pipe 142. The output control mechanism 12 can control the first passage 111 to communicate with the liquid pumping assembly 13 or the first drain pipe 141, and the second passage 112 to communicate with the liquid pumping assembly 13 or the second drain pipe 142. Accordingly, when the first passage 111 is in communication with the liquid pumping assembly 13, the liquid pumping assembly 13 can pump the uterine cavity with the uterine distention liquid through the first passage 111. When the second passage 112 is in communication with the liquid pumping assembly 13, the liquid pumping assembly 13 can pump the uterine cavity with uterine distention liquid through the first passage 111. When the first passage 111 is communicated with the first drainage tube 141, the uterine distention liquid in the uterine cavity can be discharged out of the patient through the first passage 111 via the first drainage tube 141 because the pressure in the uterine cavity is greater than the pressure outside the uterine cavity. Similarly, when the second channel 112 is in communication with the second drain 142, uterine cavity fluid may be drained from the patient through the second channel 112 via the second drain 142.

In some embodiments, as shown in connection with FIGS. 3-4, the distal end of the insertion tube 11 is provided with a lens 15. In some embodiments, the lens 15 may be a Complementary Metal Oxide Semiconductor (CMOS) lens 15. In some embodiments, as shown in conjunction with figures 3-5, the hysteroscope 100 may include a flexible circuit board (FPC) 16, the flexible circuit board 16 being flat, the flexible circuit board 16 may serve as a data line to communicatively couple the lens 15 to an image processor (not shown) located at the proximal end or outside of the insertion tube 11 for transmitting images captured by the lens 15 to the image processor. Because the flexible circuit board 16 is flat, a larger space can be left for the inside of the insertion tube 11 behind the lens 15, so that the insertion tube 11 can accommodate the first channel 111 and the second channel 112 with larger sizes, thereby improving the delivery efficiency of the uterus swelling liquid.

In some embodiments, as shown in fig. 3, the insertion tube 11 may be a straight tube 113, and an included angle α 1 of 0 to 30 degrees may be formed between a main optical axis (for example, a dashed line P in fig. 3) of the lens 15 and a central axis (for example, a dashed line Q in fig. 3) of the insertion tube 11. In some embodiments, the included angle α 1 may be in a range of 10 degrees to 30 degrees. In some embodiments, the included angle α 1 may be in the range of 15 to 25 degrees. In some embodiments, the included angle α 1 may be in a range of 15 degrees to 20 degrees. In some embodiments, the included angle α 1 may be 15 degrees. In some cases, the field of view (i.e. the field angle β) observed by the same lens 15 is fixed, and since the angle α 1 is formed between the main optical axis P of the lens 15 and the central axis Q of the insertion tube 11, when the insertion tube 11 rotates along the main optical axis P of the lens 15, the lens 15 can be used to photograph other areas, thereby increasing the field coverage of the lens 15. For example only, as shown in fig. 3, since the angle of view β of the lens 15 in fig. 3 is 120 degrees, the angle of view in the upper half (i.e., the angle between the upper edge of the angle of view β and the end surface of the distal end of the insertion tube 11) is 30 degrees, and the angle of view in the lower half (i.e., the angle between the lower edge of the angle of view β and the end surface of the distal end of the insertion tube 11) is 150 degrees, the area of 0 to 30 degrees in the upper half cannot be observed by the lens 15. When the insertion tube 11 rotates 180 degrees along the main optical axis P of the lens 15, the original 0-30 degree area enters the field of view of the lens 15, and thus can be captured by the lens 15.

In some embodiments, as shown in fig. 4-5, the insertion tube 11 may include a straight tube 113 and an elbow 114, wherein the proximal end of the elbow 114 is connected to the distal end of the straight tube 113, and the lens 15 is disposed at the distal end of the elbow 114. The central axis of the distal end of the bent tube 114 is parallel to the main optical axis P of the lens 15, and forms an included angle α 2 of 10-30 degrees with the central axis Q of the straight tube 113. In some embodiments, the included angle α 2 may be in the range of 15 degrees to 30 degrees. In some embodiments, the included angle α 2 may be in a range of 20 degrees to 30 degrees. In some embodiments, the included angle α 2 may be 26 degrees. Accordingly, when the insertion tube 11 rotates along the main optical axis P of the lens 15, the lens 15 can also capture other areas, and the coverage of the field of view of the lens 15 is increased.

In some embodiments, the arc length of the curved tube 114 may be adjusted so that the hysteroscope 100 can be adapted for use in different application scenarios. Figures 4 and 5 show a hysteroscope 100 having two arc length bends 114, respectively, wherein the bend 114 in figure 4 has an arc length of 6mm and the bend 114 in figure 5 has an arc length of 25mm. In some embodiments, the elbow 114 and the straight tube 113 may be detachably connected to facilitate the operator to replace elbows 114 of different lengths according to different usage environments. Exemplary detachable connections may include snap connections, magnetic connections, threaded connections, and the like. In some embodiments, the curved tube 114 and the straight tube 113 may be a fixed connection. Exemplary means of fixed attachment may include welding, screwing, bonding, integral molding, and the like.

In some embodiments, there is a requirement for the outer diameter of the insertion tube 11 itself, as the hysteroscope 100 needs to be deep into the uterine cavity. The outer diameter of the insertion tube 11 in the present specification may refer to the maximum distance from the outer edge of the insertion tube 11 to the central axis of the insertion tube 11. For example, when the insertion tube 11 is a cylindrical structure, the outer diameter of the insertion tube 11 is the diameter of the outer profile of the insertion tube 11. For another example, when the insertion tube 11 has a regular quadrangular prism shape, the outer diameter of the insertion tube 11 is the diagonal length of the insertion tube 11. In some embodiments, as shown in FIG. 3, the insert tube 11 is a straight tube 113, and thus the outer diameter of the straight tube 113 is the outer diameter of the insert tube 11. In some embodiments, as shown in fig. 4 and 5, the insert tube 11 includes a straight tube 113 and an elbow tube 114, and the outer diameter of the elbow tube 114 is substantially the same as the outer diameter of the straight tube, so that the outer diameter of the elbow tube 114 and the outer diameter of the straight tube 113 may both represent the outer diameter of the insert tube 11. In some embodiments, the outer diameter of the insertion tube 11 may be in the range of 3.5mm to 7 mm. In some embodiments, the outer diameter of the insertion tube 11 may be in the range of 3.5mm to 6mm. In some embodiments, the outer diameter of the insertion tube 11 may be in the range of 3.5mm to 5mm. By way of example only, in the embodiment shown in fig. 3, the hysteroscope 100 is a straight tube 113, the straight tube 113 having an outer diameter of about 4mm. In another example, as shown in conjunction with figures 4 and 5, hysteroscope 100 includes a straight tube 113 and an elbow 114, where the outer diameter of the straight tube 113 and elbow 114 in figure 4 is about 3.6mm and the outer diameter of the straight tube 113 and elbow 114 in figure 5 is about 4mm.

In some embodiments, as shown in fig. 6, the distal end of the first channel 111 and the distal end of the second channel 112 have a first port 115 and a second port 116 disposed on the distal end surface of the insertion tube 11, the uterine distention liquid in the uterine cavity can flow into the corresponding channels through the first port 115 and the second port 116 and then be discharged outside the patient, and the uterine distention liquid in the first channel 111 and the second channel 112 can be delivered into the uterine cavity through the first port 115 and the second port 116.

In some embodiments, since the distal end of the insertion tube 11 is provided with the lens 15, the lens 15 occupies most of the space of the distal end of the insertion tube 11 when it is large in size, which may cause a limitation in the size of the first port 115 and the second port 116. In some embodiments, the first port 115 and the second port 116 are less than 1mm in diameter. In some embodiments, the first port 115 and the second port 116 are less than 0.95mm in diameter. In some embodiments, the first port 115 and the second port 116 are less than 0.6mm in diameter. When the diameters of the first port 115 and the second port 116 are too small, the first port 115 and the second port 116 are more easily blocked by impurities such as tissue mucosa in the uterine cavity, and further the uterine distention liquid in the uterine cavity cannot be normally discharged through the first channel 111 and the second channel 112.

In some embodiments, the distal end of the first channel 111 and the distal end of the second channel 112 have openings disposed on the sidewall of the insertion tube 11. For example only, as shown in fig. 6, the openings may include a first opening 117 and a second opening 118, the first opening 117 corresponding to the first passage 111 for communicating the first passage 111 with the outside of the insertion tube 11, and the second opening 118 corresponding to the second passage 112 for communicating the second passage 112 with the outside of the insertion tube 11. In some cases, since the opening is provided in the side of the insertion tube 11 instead of the distal end surface of the insertion tube 11, the lens 15 is avoided, and the restriction on the size of the first port 115 and the second port 116 due to the oversize of the lens 15 is avoided, reducing the possibility that the first port 115 and the second port 116 are clogged and do not work properly. In some embodiments, as shown in fig. 6, the number of first openings 117 and second openings 118 may each be one. In some embodiments, the number of the first opening 117 and the second opening 118 may be multiple, so as to avoid that the uterine cavity fluid cannot be discharged to the outside of the patient due to the blockage of the first opening 117 and the second opening 118. Taking the first openings 117 as an example, when one of the first openings 117 is blocked, the first passage 111 and the outside of the insertion tube 11 can be communicated through the other first opening 117.

In some embodiments, the first port 115, the second port 116, and the first opening 117, the second opening 118 may be present simultaneously. By way of example only, as shown in FIG. 6, the distal ends of the first and

second channels

111, 112 have first and

second openings

117, 118 disposed in the sides of the insertion tube 11, and the distal ends of the first and

second channels

111, 112 have first and

second ports

115, 116 disposed in the distal end face of the insertion tube 11, further reducing the likelihood that the first and

second channels

111, 112 will become blocked from proper operation.

In some embodiments, as shown in fig. 6, the distal end surface of the insertion tube 11 is further provided with an instrument channel 1191 and a lens channel 1192, the instrument channel 1191 may be used for accommodating a surgical instrument (not shown in the figures), and the lens channel 1192 may be used for accommodating the lens 15.

In some embodiments, as shown in connection with FIGS. 1-2, 7-8, the output control mechanism 12 may include a three-way valve that switches the first passage 111 to communicate with the fluid pumping assembly 13 or the first drain 141 and switches the second passage 112 to communicate with the fluid pumping assembly 13 or the second drain 142. The switching communication in this specification may mean that the three-way valve may communicate the first passage 111 with the liquid pump assembly 13 or communicate the first passage 111 with the first drain pipe 141. Similarly, a three-way valve may communicate the second passage 112 with the fluid pumping assembly 13 or the second passage 112 with a second drain conduit 142.

In some cases, it is more convenient for an operator to adjust the communication relationship between the first passage 111 and the second passage 112 and the liquid pump assembly 13 and the liquid discharge pipe 14 as required after the three-way valve is arranged, so as to realize the switching between the liquid feeding and the liquid discharging. For example, when it is necessary to inject womb swelling liquid into the womb cavity, the operator may operate the three-way valve to communicate one of the first channel 111 or the second channel 112 with the liquid pump assembly 13, and pump the womb swelling liquid into the womb cavity through the liquid pump assembly 13. For another example, when it is necessary to discharge the uterine cavity distending liquid, the operator may operate the three-way valve to communicate the first channel 111 with the first liquid discharge pipe 141, or communicate the second channel 112 with the second liquid discharge pipe 142, and discharge the uterine cavity distending liquid through the first liquid discharge pipe 141 or the second liquid discharge pipe 142. In other cases, the operator can pump the uterine distention liquid or discharge the uterine distention liquid through the first channel 111 and the second channel 112 simultaneously, thereby further improving the uterine distention liquid delivery efficiency. In addition, the three-way valve has a simple structure and low cost, so that the hysteroscope 100 is more suitable for use in outpatients.

In some embodiments, as shown in fig. 1 and 2, the three-way valve may include a first three-way valve 121 and a second three-way valve 122, the first three-way valve 121 may switch to communicate the first passage 111 with the liquid pumping assembly 13 or the first drain 141, and the second three-way valve may switch to communicate the second passage 112 with the liquid pumping assembly 13 or the second drain 142. Because the first passage 111 and the second passage 112 are respectively communicated with the liquid pump assembly 13 through two independent three-way valves, an operator can control one three-way valve independently, and the operation efficiency is improved.

In some embodiments, as shown in fig. 1-2 and 7-8, the first three-way valve 121 can include a first reversing structure 1211, and the second three-way valve 122 can include a second reversing structure 1221, wherein the first passage 111 can be switched to communicate with the liquid pump assembly 13 or the first drain pipe 141 by controlling the first reversing structure 1211, and correspondingly, the second passage 112 can be switched to communicate with the liquid pump assembly 13 or the second drain pipe 142 by controlling the second reversing structure 1221. In some embodiments, the first and second reversing

structures

1211, 1221 are each movable between a first position and a second position, and the first and second three-

way valves

121, 122 are in different communication relationships when the first and second reversing

structures

1211, 1221 are in different positions. By way of example only, and with reference to fig. 1-2 and 7, taking the first three-way valve 121 as an example, the first three-way valve 121 may include a first communication port 1212, a second communication port 1213, and a third communication port 1214, the first communication port 1212 may be in communication with the first passage 111, the second communication port 1213 may be in communication (e.g., via a conduit) with the liquid pump assembly 13, and the third communication port 1214 may be in communication with the first drain 141. When the first reversing structure 1211 is in the first position, the first communication port 1212 is in communication with the second communication port 1213, and therefore the first three-way valve 121 can communicate the first passage 111 with the liquid pump assembly 13. When the first reversing structure 1211 is in the second position, the first communication port 1212 is in communication with the third communication port 1214, so that the first three-way valve 121 can communicate the first channel 111 with the first drain pipe 141. In some application scenarios, when the uterine cavity is supplied with the uterine distention liquid, the first reversing structure 1211 of the first three-way valve 121 may be controlled to move to the first position, the first channel 111 and the liquid pump assembly 13 are communicated through the first three-way valve 121, and the uterine distention liquid is injected into the first channel 111 through the liquid pump assembly 13. When the womb swelling liquid in the womb cavity needs to be discharged, the first reversing structure 1211 of the first three-way valve 121 can be controlled to move to the second position, the first channel 111 and the first liquid discharging pipe 141 are communicated through the first three-way valve 121, and the womb swelling liquid in the womb cavity is discharged out of the patient body through the first channel 111. Similarly, the second three-way valve 122 may include a fourth communication port that may be in communication with the second passage 112, a fifth communication port that may be in communication with the liquid pump assembly 13, and a sixth communication port that may be in communication with the second liquid discharge pipe 142. The working principle of the second three-way valve 122 can be the same as or similar to that of the first three-way valve 121, and will not be described herein.

In some embodiments, the first three-way valve 121 and the second three-way valve 122 can be in communication with the same liquid pump assembly 13. In some embodiments, as shown in fig. 1, the three-way valve may further include a third three-way valve 123, and the third three-way valve 123 may be switched to communicate the liquid pump assembly 13 with the first three-way valve 121 or the second three-way valve 122. For example only, the third three-way valve 123 may include a seventh communication port, an eighth communication port, and a ninth communication port, the seventh communication port and the eighth communication port may be in communication with the second communication port 1213 of the first three-way valve 121 and the fifth communication port of the second three-way valve 122, respectively, and the ninth communication port may be in communication with the liquid pump assembly 13. The working principle of the third three-way valve 123 may be the same as or similar to that of the first three-way valve 121, and is not described herein again. In some cases, after the third three-way valve 123 is provided, an operator can control the first channel 111 and the second channel 112 to simultaneously deliver the womb expansion liquid to the uterine cavity through the third three-way valve 123, or deliver the womb expansion liquid through one of the channels, so that the operation is more convenient. In some embodiments, the first three-way valve 121 and the second three-way valve 122 can communicate with different liquid pump assemblies 13, respectively. For example, the liquid pump assembly 13 can include a first liquid pump assembly (not shown) that can be in communication with the first three-way valve 121 and a second liquid pump assembly (not shown) that can be in communication with the second three-way valve 122.

In some embodiments, the first channel 111 and the second channel 112 can be switched to input/output liquid through the same three-way valve. For example only, the output control mechanism 12 may include an inlet manifold (not shown) and two inlet manifolds (not shown). One end of the liquid inlet main pipe is communicated with one communicating port of the three-way valve, the other end of the liquid inlet main pipe is respectively communicated with the first channel 111 and the second channel 112 through two liquid inlet branch pipes, and the other two communicating ports of the three-way valve are respectively communicated with the liquid discharge pipe 14 and the liquid pump assembly 13. When the reversing structure of the three-way valve is located at the first position, the liquid pump assembly 13 is simultaneously communicated with the first channel 111 and the second channel 112, and the liquid pump assembly 13 can simultaneously pump the uterus expanding liquid to the uterine cavity through the first channel 111 and the second channel 112, so that the conveying efficiency of the uterus expanding liquid is improved. When the reversing structure of the three-way valve is located at the second position, the first passage 111 and the second passage 112 are simultaneously disconnected from the liquid pump assembly 13 and communicated with the liquid discharge pipe 14, and meanwhile, the uterus swelling liquid is discharged out of the uterine cavity through the first passage 111 and the second passage 112. In some embodiments, a one-way valve (not shown) is disposed on each of the two inlet branch pipes, and when the first channel 111 and the second channel 112 are simultaneously communicated with the liquid pump assembly 13, an operator can control the opening and closing of the one-way valve to enable one of the first channel 111 and the second channel 112 to deliver the uterine cavity with uterine distention liquid.

In some embodiments, the operator can manually control the reversing structure of the first three-way valve 121 and/or the second three-way valve 122 to switch the liquid inlet/outlet. In some embodiments, the switching of the liquid inlet/outlet can be achieved by automatically controlling the reversing structure of the first three-way valve 121 and/or the second three-way valve 122 by a control component (e.g., the controller 18 in fig. 9), and further description can be found in fig. 9 and its embodiments.

In some application scenes, impurities such as mucosa tissues in the uterine cavity of a patient can be mixed into the uterine expansion liquid, so that the uterine expansion liquid is turbid, the cleanliness of the uterine expansion liquid in the uterine cavity of the patient cannot be ensured, clear images cannot be acquired through the lens 15, and great inconvenience is brought to operation of operators. For the reasons, when the hysteroscope 100 is used, the turbidity of the uterus swelling liquid needs to be determined in time, so that the uterus swelling liquid which does not meet the use requirements can be replaced in time.

In some embodiments, the operator may capture images of the uterine cavity through a lens 15 disposed at the distal end of the insertion tube 11, and determine the turbidity of the uterine distention fluid in the uterine cavity based on the images. When the turbidity of the uterus swelling liquid is larger than the turbidity threshold value, an operator can replace the uterus swelling liquid. The turbidity can be the degree of blocking light from impurities such as mucosa tissue in uterine cavity expanding liquid. The higher the turbidity of the uterus expanding liquid is, the more impurities such as mucosa tissues in the uterus expanding liquid are, and the more difficult the lens 15 is to acquire clear images. On the contrary, the lower the turbidity of the uterus dilating liquid is, the less the impurities such as mucosa tissues in the uterus dilating liquid are, and the clear image can be more easily obtained by the lens 15. For example only, when the turbidity of the uterine distention fluid is greater than the turbidity threshold, the operator may control the first reversing structure 1211 to communicate the first channel 111 with the first liquid discharge tube 141 to discharge the uterine distention fluid, and control the second reversing structure 1221 to communicate the second channel 112 with the liquid pump assembly 13 to pump the uterine distention fluid into the uterine cavity, thereby achieving the renewal of the uterine distention fluid. Accordingly, the operator may also control the second reversing structure 1221 to communicate the second passage 112 with the second drain 142 to drain the uterine cavity fluid, and control the first reversing structure 1211 to communicate the first passage 111 with the fluid pump assembly 13 to pump the uterine cavity fluid. In another example, the operator can control the first and second reversing

structures

1211 and 1221 to communicate the first and

second passages

111 and 112 with the first and second

liquid discharge tubes

141 and 142, respectively, to discharge the uterine cavity, and then control the first and second reversing

structures

1211 and 1221 to communicate the first and

second passages

111 and 112 with the liquid pump assembly 13, respectively, to pump the uterine cavity with the uterine cavity.

In some embodiments, the operator may compare the image of uterine distention fluid with the reference image, and when the degree of matching between the image of uterine distention fluid and the reference image is greater than the threshold value, may determine that the turbidity of uterine distention fluid is greater than the threshold value. The reference image may be an image captured when the turbidity of the uterine distention fluid is greater than a threshold value. In some embodiments, the turbidity threshold may be greater than 80%. In some embodiments, the turbidity threshold may be greater than 85%. In some embodiments, the turbidity threshold may be greater than 90%. In some embodiments, a controller (e.g., the controller 18 in fig. 9) may automatically determine the turbidity of the uterine cavity fluid according to the image captured by the lens, and control the reversing structure of the first three-way valve 121 and/or the second three-way valve 122 to switch the fluid inlet/outlet based on the turbidity. In this regard, more description may be found in FIG. 9 and its embodiments.

In some application scenarios, impurities such as mucosal tissue in the uterine cavity may block the ports (e.g., the first port 115 and the second port 116 in fig. 6) and/or the outlets (e.g., the first outlet and the second outlet in fig. 6) of the first channel 111 and/or the second channel 112, so that the uterine distention liquid in the uterine cavity cannot be timely discharged out of the patient body through the first channel 111 and/or the second channel 112, which may not only affect the replacement of the uterine distention liquid and reduce the operation efficiency, but also cause the pressure in the uterine cavity to be too high, and damage the uterine cavity. For the above reasons, when using the hysteroscope 100, an operator needs to determine whether the first channel 111 and/or the second channel 112 is blocked, so as to dredge the first channel 111 and/or the second channel 112 in time, thereby improving the efficiency and safety of the operation.

In some embodiments, since the first and

second passages

111 and 112 are in communication with the first and second three-

way valves

121 and 122, respectively, it may be determined whether the first and/or

second passages

111 and 112 are blocked based on the liquid flow state within the first and second three-

way valves

121 and 122. For example only, when the first channel 111 and/or the second channel 112 is blocked, the liquid in the uterine cavity cannot be discharged through the first channel 111 and/or the second channel 112, and thus the liquid in the corresponding three-way valve cannot flow or the flow speed is slow, so that an operator can determine whether the first channel 111 and/or the second channel 112 is blocked by observing the liquid flow condition in the three-way valve. In order to allow the operator to observe the liquid flowing in the three-way valve more clearly, in some embodiments, the first three-way valve 121 and the second three-way valve 122 may be made of a material having a certain light transmittance, and exemplary materials may include Polycarbonate (PC), polystyrene (PS), cyclic Olefin Copolymer (COC), acrylonitrile Butadiene Styrene (ABS), organic glass, polypropylene (PP), and the like. In some embodiments, the light transmittance of the first three-way valve 121 and the second three-way valve 122 may be in a range of 80% to 100%. In some embodiments, the light transmittance of the first three-way valve 121 and the second three-way valve 122 can be in a range of 85% to 100%. In some embodiments, the light transmittance of the first three-way valve 121 and the second three-way valve 122 may be in a range of 90% to 100%.

In some embodiments, as shown in fig. 9, the hysteroscope 100 may include a flow rate detector 19, and an operator may detect the flow rate of the liquid in the first channel 111 and/or the second channel 112 through the flow rate detector 19 to help the operator more accurately determine whether the first channel 111 and/or the second channel 112 is blocked. For example only, when the liquid flow rate in the first channel 111 and/or the second channel 112 is less than the flow rate threshold, it may be determined that the first channel 111 and/or the second channel 112 is blocked. In some embodiments, the flow rate detector 19 may be disposed on the three-way valve (e.g., the first three-way valve 121 and the second three-way valve 122) because the flow rate of the liquid in the first channel 111 and/or the second channel 112 is nearly equal to the flow rate of the liquid at the corresponding three-way valve. In some embodiments, the flow rate threshold may be in a range of 130ml/min to 500 ml/min. In some embodiments, the flow rate threshold may be in a range of 150ml/min to 400 ml/min. In some embodiments, the flow rate threshold may be in a range of 200ml/min to 300 ml/min.

In some embodiments, whether the first channel 111 and/or the second channel 112 is blocked may be determined by the flow rate detector 19 detecting the rate of uterine distention fluid pumped by the fluid pump assembly 13. For example only, the first passage 111 may be in communication with the liquid pump assembly 13, the second passage 112 may be in communication with the second liquid drain 142, and the liquid pump assembly 13 pumps the uterine cavity fluid at a constant pressure. If the second channel 112 is blocked, as the uterine distention liquid in the uterine cavity increases, the pressure in the uterine cavity increases, and further the resistance to the uterine distention liquid pumped by the liquid pump assembly 13 increases, the speed of pumping the uterine distention liquid decreases, and when the speed of pumping the uterine distention liquid is lower than the threshold value of the pumping speed, the second channel 112 can be represented to be blocked. Similarly, the second passage 112 may be communicated with the liquid pump assembly 13, and the first passage 111 may be communicated with the first drain pipe 141 to determine whether the first passage 111 is clogged. In some embodiments, the pumping rate threshold may be in a range of 30mL/min to 150 mL/min. In some embodiments, the pumping rate threshold may be in a range of 135mL/min to 150 mL/min. In some embodiments, the pumping rate threshold may be in a range of 140mL/min to 150 mL/min.

In some embodiments, as shown in fig. 9, hysteroscope 100 may also include a pressure sensor 20, and pressure sensor 20 may be used to detect the pressure within the uterine cavity. The operator can obtain the pressure change in the uterine cavity through the pressure sensor 20, and determine whether the first channel 111 and/or the second channel 112 is blocked by combining the liquid flowing directions of the first channel 111 and the second channel 112. The process of determining whether the first passage 111 and/or the second passage 112 is clogged will be described below.

In some embodiments, when one of the first channel 111 or the second channel 112 is delivering distending fluid to the uterine cavity and the other is draining distending fluid, if the pressure in the uterine cavity exceeds a pressure threshold, the channel for delivering distending fluid is indicated as being blocked. For example, when the first passage 111 is delivering uterine distention fluid to the uterine cavity and the second passage 112 is draining uterine distention fluid, if the pressure in the uterine cavity gradually increases and exceeds a pressure threshold, an occlusion of the second passage 112 is indicated. Similarly, when second passage 112 is delivering uterine distention fluid to the uterine cavity and first passage 111 is draining uterine distention fluid, if the pressure in the uterine cavity gradually increases and exceeds a pressure threshold, an occlusion of first passage 111 is indicated. In some embodiments, the pressure threshold may be in the range of 80mmHg to 120mmHg. In some embodiments, the pressure threshold may be in the range of 90mmhg to 110mmhg. In some embodiments, the pressure threshold may be in the range of 90mmHg to 100mmHg.

In some embodiments, when only the first channel 111 and/or the second channel 112 is discharging uterine turgor fluid, if the pressure change in the uterine cavity is less than the change threshold, it is indicative that the channel for discharging uterine turgor fluid is in a blocked state. In some embodiments, the variation threshold may be in the range of 80mmHg to 120mmHg. In some embodiments, the variation threshold may be in the range of 90mmHg to 110mmHg. In some embodiments, the variation threshold may be in the range of 90mmhg to 100mmhg.

In some embodiments, the operator may determine the direction of the liquid flow in the first channel 111 and the second channel 112 by observation. In some embodiments, an operator may determine the direction of liquid flow in the first channel 111 and the second channel 112 in conjunction with the flow rate detector 19. For example, when the first passage 111 is in communication with the liquid pump assembly 13 and the flow rate detector 19 detects that the flow rate of liquid in the first passage 111 reaches an initial flow rate threshold, it can indicate that the liquid pump assembly 13 is pumping uterine distention liquid through the first passage 111 to the uterine cavity.

In some embodiments, if the first and

second channels

111 and 112 are not currently used to deliver and discharge the distending liquid, the operator can adjust the first reversing mechanism 1211 of the first three-way valve 121 to the second position to connect the first channel 111 with the first liquid discharge pipe 141, adjust the second reversing mechanism 1221 to the first position to connect the second channel 112 with the liquid pump assembly 13, and turn off the liquid pump assembly 13, i.e., discharge the distending liquid in the uterine cavity only through the first channel 111, and the second channel 112 pumps neither liquid nor liquid. In this embodiment, if the pressure in the uterine cavity remains the same or the pressure change is less than the change threshold, it indicates that the first passage 111 is in the blocked state, and thus, the preset condition may include that the pressure in the uterine cavity remains the same or the pressure change is less than the change threshold. Similarly, the second passage 112 may be connected to the second drain line 142, the first passage 111 may be connected to the liquid pumping assembly 13, and the liquid pumping assembly 13 may be turned off to detect whether the second passage 112 is clogged. In some embodiments, the first and second reversing

structures

1211 and 1221 can each be adjusted to a second position such that the first and

second passages

111 and 112 are in communication with the first and

second drain pipes

141 and 142, respectively. If the pressure in the uterine cavity remains the same or the pressure change is less than the change threshold, it indicates that both the first passage 111 and the second passage 112 are in a blocked state.

In some embodiments, the operator can adjust the first direction-changing structure 1211 of the first three-way valve 121 to the second position, such that the first channel 111 is communicated with the first liquid discharging pipe 141, adjust the second direction-changing structure 1221 to the first position, such that the second channel 112 is communicated with the liquid pump assembly 13, and turn on the liquid pump assembly 13, i.e., the womb swelling liquid in the womb cavity is discharged through the first channel 111, and the womb swelling liquid is pumped through the second channel 112. In this embodiment, if the first passage 111 is working properly, the liquid pumped by the second passage 112 will be drained from the first passage 111, and thus the pressure in the uterine cavity will remain unchanged. Accordingly, if the pressure in the uterine cavity gradually increases and exceeds the pressure threshold, it is indicative that uterine distention fluid cannot be discharged from the first passage 111, indicating that the first passage 111 is in a blocked state, and therefore, in this embodiment, the preset condition may include the pressure in the uterine cavity being greater than the pressure threshold. Similarly, the first passage 111 may be in communication with the fluid pumping assembly 13 and the second passage 112 may be in communication with the second drain line 142 to determine whether the second passage 112 is blocked.

In some embodiments, when the first channel 111 and/or the second channel 112 are in the blocked state, the operator may open the blockage by pumping the uterine distention liquid into the channel and using the impact force of the uterine distention liquid. For example, when the first channel 111 is blocked, uterine distention fluid may be pumped to the first channel 111.

In some embodiments, the uterine cavity expanding fluid may be delivered by other means than the fluid pump assembly 13. For example only, a container (e.g., a saline bag) containing a distending fluid may be suspended at a height that creates a height differential between the saline bag and the uterine cavity of the patient, thereby allowing the distending fluid to be delivered into the uterine cavity by gravity through the first channel 111 and/or the second channel 112.

In some embodiments, the uterus dilating liquid can be discharged out of the body through the liquid pump assembly 13, so that the transportation efficiency of the uterus dilating liquid is improved. For example only, the liquid pump assembly 13 may further include a suction pump (not shown), and the distal end of the first liquid discharge tube 141 may be in communication with the first passage 111, and the proximal end of the first liquid discharge tube 141 may be in communication with the suction pump. The distal end of the second drain conduit 142 may be in communication with the second channel 112, and the proximal end of the second drain conduit 142 is in communication with the suction pump. The suction pump may create a negative pressure at the proximal end of first drain tube 141 and the proximal end of second drain tube 142, thereby drawing the uterine cavity's fluid out of the patient via first passageway 111-first drain tube 141 and/or out of the patient via second passageway 112-second drain tube 142. In some embodiments, the suction pump may be disposed within a waste collection container (not shown) that may be used to collect uterine distention fluid drained from the uterine cavity for treatment of the drained uterine distention fluid.

In some embodiments, as shown in fig. 1 and 2, the hysteroscope 100 may further include a handle 17, and the insertion tube 11, the first three-way valve 121, and the second three-way valve 122 may be disposed on the handle 17.

In some embodiments, one or more components of the hysteroscope 100 may perform the respective functions by way of manual manipulation. For example, the operator can manually operate the first reversing structure 1211 of the first three-way valve 121 to communicate the first passage 111 with the liquid pumping assembly 13 or the first drain 141, or operate the second reversing structure 1221 of the second three-way valve 122 to communicate the second passage 112 with the liquid pumping assembly 13 or the second drain 142. In another example, the operator may control the liquid pump assembly 13 to pump the uterine distention liquid.

In some embodiments, one or more components of the hysteroscope 100 may be controlled by other components to perform corresponding functions. In some embodiments, as shown in fig. 9, the hysteroscope 100 may further include a controller 18, and the controller 18 may be used to drive the output control mechanism 12 to control the first channel 111 to communicate with the fluid pumping assembly 13 or the first drain 141, and to drive the output control mechanism 12 to control the second channel 112 to communicate with the fluid pumping assembly 13 or the second drain 142. For example only, the output control mechanism 12 may include a first driver 124 and a second driver 125. The first driving member 124 is coupled to the first reversing structure 1211, the second driving member 125 is coupled to the second reversing structure 1221, the first driving member 124 is coupled to the controller 18, the controller 18 is communicatively coupled to the first driving member 124 and the second driving member 125, and the controller 18 is configured to control the first reversing structure 1211 to move between the first position and the second position via the first driving member 124 and to control the second reversing structure 1221 to move between the first position and the second position via the second driving member 125.

In some embodiments, the controller 18 may be communicatively coupled to the lens 15, and the controller 18 may be configured to determine a turbidity of the uterine fluid within the uterine cavity based on the image of the uterine cavity acquired by the lens 15. In response to the turbidity being greater than the turbidity threshold, the controller 18 can control the first and/or second reversing

structures

1211, 1221 via the first and/or second drive members 124, 125 to effect replacement of the uterine distention fluid. For example only, the controller 18 can control the first reversing structure 1211 through the first driving member 124 to communicate the first channel 111 with the first liquid discharging tube 141 to discharge the distended liquid, control the second reversing mechanism 1221 through the second driving member 125 to communicate the second channel 112 with the liquid pumping assembly 13 to deliver the distended liquid to the uterine cavity, or control the second reversing structure 1221 through the second driving member 125 to communicate the second channel 112 with the second liquid discharging tube 142 to discharge the distended liquid, and control the first reversing structure 1211 through the first driving member 124 to communicate the first channel 111 with the liquid pumping assembly 13 to deliver the distended liquid to the uterine cavity. In another example, the controller 18 may control the first and second reversing

structures

1211 and 1221 via the first and second driving members 124 and 125, respectively, such that the first and

second channels

111 and 112 communicate with the first and

second drain tubes

141 and 142, respectively, to drain the uterine cavity fluid. The first and second reversing

structures

1211 and 1221 are then controlled by the first and second driving members 124 and 125, respectively, such that the first and

second passages

111 and 112, respectively, communicate with the liquid pump assembly 13 to pump the uterine distention liquid.

In some embodiments, controller 18 may determine whether the uterine distention fluid contains impurities and the turbidity of the uterine distention fluid based on image recognition techniques. For example, the controller 18 may compare the acquired image with the characteristics of the impurities such as mucosal tissue in the database, determine that an object in a certain region in the acquired image is an impurity if the degree of matching between the characteristics of the object and the characteristics of the impurities such as mucosal tissue reaches a set matching threshold, and indicate that the turbidity of the uterine cavity fluid exceeds the turbidity threshold if the region occupied by the impurities exceeds the threshold. The degree of matching as used herein may be the degree of coincidence between the characteristics of the object and the characteristics of impurities such as mucosal tissues.

In some embodiments, controller 18 may determine the turbidity of the uterine fluid based on a turbidity determination model. The controller 18 may input the image acquired by the lens 15 into the turbidity determination model. The output of the turbidity determination model may include the turbidity of the uterine distention fluid. In some embodiments, the turbidity determination model may be a machine learning model. The turbidity determination model can be a trained machine learning model. The machine learning model includes various models and structures, such as a deep neural network model, a recurrent neural network model, a custom model structure, and the like. In some embodiments, when training the opacity determination model, a plurality of labeled (or called labeled) images can be used as training data, and the parameters of the model can be learned by performing training in a common manner, such as gradient descent or the like.

In some embodiments, the controller 18 can be communicatively coupled to the flow rate detector 19, the controller 18 can be configured to determine whether the flow rate of the liquid in the first three-way valve 121 and the second three-way valve 122 reaches a flow rate threshold based on a detection signal of the flow rate detector 19, and the controller 18 can control the first reversing structure 1211 and/or the second reversing structure 1221 to effect the replacement of the uterine turgescence liquid via the first driving member 124 and/or the second driving member 125 in response to the flow rate of the liquid in the first three-way valve 121 and the second three-way valve 122 reaching the flow rate threshold.

In some embodiments, the controller 18 may be communicatively coupled to the pressure sensor 20, and the controller 18 may be configured to determine whether the first channel 111 and/or the second channel 112 is blocked based on the pressure signal generated by the pressure sensor 21 and the flow direction of the uterine distention fluid in the first channel 111 and the second channel 112. In response to the first passage 111 becoming blocked, the first reversing structure 1211 is controlled by the first drive member 124 such that the first passage 111 communicates with the fluid pump assembly 13 to unblock the first passage 111. In response to the second passage 112 becoming blocked, the second reversing structure 1221 is controlled by the second drive member 125 to place the second passage 112 in communication with the fluid pump assembly 13 to unblock the second passage 112. For more details here, reference may be made to the description of other embodiments of the present description.

The present specification also provides a safety control method based on the hysteroscope 100 described in one or more of the foregoing embodiments, which is used to improve the safety of the patient undergoing the hysteroscope 100 for the uterine cavity examination. In some embodiments, the method of safety control of the hysteroscope 100 may include the steps of: acquiring an image in a uterine cavity by using the lens 15; determining the turbidity of the uterine distention fluid in the uterine cavity based on the image collected by the lens 15; in response to the turbidity being greater than the turbidity threshold, controlling the first reversing structure 1211 via the first driving member 124 to communicate the first passage 111 with the first drain 141 and controlling the second reversing structure 1221 via the second driving member 125 to communicate the second passage 112 with the liquid pump assembly 13, or controlling the second reversing structure 1221 via the second driving member 125 to communicate the second passage 112 with the second drain 142 and controlling the first reversing structure 1211 via the first driving member 124 to communicate the first passage 111 with the liquid pump assembly 13; or in response to the turbidity being greater than the turbidity threshold, controlling the first and second reversing structures 1211 and 1221, respectively, by the first and second driving members 124 and 125 such that the first and second passages 111 and 112 are in communication with the first and second drain pipes 141 and 142, respectively; the first and second reversing structures 1211 and 1221 are controlled by the first and second drives 124 and 125, respectively, such that the first and second passages 111 and 112, respectively, communicate with the liquid pump assembly 13.

The hysteroscope 100 of some embodiments of the present description is used as follows: firstly, the insertion tube 11 of the hysteroscope 100 is inserted into the uterine cavity of a patient; after the distal end of the insertion tube 11 extends into the uterine cavity, the first channel 111 and/or the second channel 112 is communicated with the liquid pump assembly 13 through the output control mechanism 12, uterine swelling liquid is conveyed to the uterine cavity through the liquid pump assembly 13, uterine swelling operation is performed, during the process, the turbidity of the uterine swelling liquid can be detected, when the turbidity exceeds a turbidity threshold value, the first channel 111 and/or the second channel 112 is communicated with the liquid discharge tube 14 through the output control mechanism 12, the uterine swelling liquid in the uterine cavity is discharged through the liquid discharge tube 14, the first channel 111 and/or the second channel 112 is communicated with the liquid pump assembly 13 through the output control mechanism 12, the uterine swelling liquid is conveyed to the uterine cavity through the liquid pump assembly 13, and the uterine swelling liquid is replaced; after the operation is completed, first channel 111 and/or second channel 112 are communicated with drainage tube 14 through output control mechanism 12, uterus expanding liquid in the uterine cavity is discharged through drainage tube 14, and insertion tube 11 is taken out.

The hysteroscope in the embodiment of the present specification may bring beneficial effects including but not limited to: (1) The output control device of the hysteroscope is used for realizing the switching of the functions of the liquid channels, so that the transportation speed of the uterus swelling liquid can be increased, and the operation efficiency is improved; (2) By arranging the three-way valve, an operator can conveniently adjust the communication relationship between the first channel and the second channel and the liquid pump assembly and the liquid discharge pipe as required, so that the switching between liquid inlet and liquid discharge is realized, and in addition, the three-way valve has a simple structure and lower cost, so that the hysteroscope can be more suitable for being used in outpatient service; (3) The opening is arranged on the side surface of the insertion tube instead of the distal end surface of the insertion tube, so that the opening avoids the lens, the limitation of the oversize of the lens on the sizes of the first port and the second port is avoided, and the possibility that the first port and the second port are blocked and cannot work normally is reduced; (4) By arranging the main optical axis P of the lens to have an angle with the central axis Q of the insertion tube, the lens can shoot other areas when the insertion tube rotates along the main optical axis P of the lens, thereby increasing the field coverage of the lens. It is to be noted that different embodiments may produce different advantages, and in different embodiments, any one or combination of the above advantages may be produced, or any other advantages may be obtained.

Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing detailed disclosure is to be considered as illustrative only and not limiting, of the present invention. Various modifications, improvements and adaptations to the present description may occur to those skilled in the art, although not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present specification and thus fall within the spirit and scope of the exemplary embodiments of the present specification.

Claims

1. A hysteroscope, comprising:

an insertion tube including a first channel and a second channel extending in an axial direction of the insertion tube;

a liquid pumping assembly for pumping uterine distention liquid through the first and second channels;

the liquid discharge pipe comprises a first liquid discharge pipe and a second liquid discharge pipe, the near end of the first channel is communicated with the first liquid discharge pipe, and the near end of the second channel is communicated with the second liquid discharge pipe;

and the output control mechanism can control the first channel to be communicated with the liquid pump assembly or the first liquid discharge pipe and control the second channel to be communicated with the liquid pump assembly or the second liquid discharge pipe.

2. The hysteroscope of claim 1, wherein the distal end of the first channel and the distal end of the second channel have openings disposed on the sidewall of the insertion tube.

3. A hysteroscope according to claim 1, wherein the output control mechanism comprises a first three-way valve and a second three-way valve; the first three-way valve is switched to communicate the first channel with the liquid pump assembly or the first liquid discharge pipe; and the second three-way valve is switched to communicate the second channel with the liquid pump assembly or the second liquid discharge pipe.

4. The hysteroscope of claim 3, wherein the output control mechanism comprises a first drive member and a second drive member, the first three-way valve comprises a first reversing structure, and the second three-way valve comprises a second reversing structure; the first driving piece is connected with the first reversing structure, and the second driving piece is connected with the second reversing structure;

the hysteroscope further comprises a controller, and the controller is in communication connection with the first driving part and the second driving part.

5. The hysteroscope of claim 4, further comprising a lens in communicative connection with the controller; the controller is configured to:

determining a turbidity of the uterine distention fluid within a uterine cavity based on the image acquired by the lens;

in response to the turbidity being greater than a turbidity threshold value, controlling the first reversing mechanism by the first driving member to communicate the first passage with the first drain pipe and controlling the second reversing mechanism by the second driving member to communicate the second passage with the liquid pump assembly, or controlling the second reversing mechanism by the second driving member to communicate the second passage with the second drain pipe and controlling the first reversing mechanism by the first driving member to communicate the first passage with the liquid pump assembly; or alternatively

responding to the fact that the turbidity degree is larger than a turbidity degree threshold value, controlling the first reversing structure and the second reversing structure through the first driving piece and the second driving piece respectively, and enabling the first channel and the second channel to be communicated with the first liquid discharge pipe and the second liquid discharge pipe respectively;

the first reversing mechanism and the second reversing mechanism are respectively controlled by the first driving piece and the second driving piece so that the first channel and the second channel are respectively communicated with the liquid pump assembly.

6. A hysteroscope according to claim 4, further comprising a pressure sensor for detecting pressure within the uterine cavity and generating a pressure signal.

7. The hysteroscope of claim 6, wherein the controller is configured to:

judging whether the first channel and/or the second channel is blocked or not based on the pressure signal generated by the pressure sensor and the flow directions of the uterine distention liquid of the first channel and the second channel;

in response to the first passage becoming blocked, controlling the first reversing structure via the first drive member to place the first passage in communication with the liquid pump assembly;

and in response to the second passage being blocked, controlling the second reversing structure by the second driver to place the second passage in communication with the liquid pump assembly.

8. The hysteroscope of claim 3, further comprising a flow rate detector for detecting the flow rate of liquid in the first and second three-way valves.

9. The hysteroscope according to claim 5, wherein the insertion tube is linear, and the main optical axis of the lens forms an included angle of 10-30 degrees with the central axis of the insertion tube.

10. The hysteroscope according to claim 9, wherein the insertion tube comprises a straight tube and an elbow tube, one end of the elbow tube is connected with the straight tube, the lens is arranged at the other end of the elbow tube, a main optical axis of the lens is parallel to a tangent line of the other end of the elbow tube, and an included angle of 10-30 degrees is formed between the main optical axis of the lens and a central axis of the straight tube.