Uterine cavity endoscope

Abstract

The utility model relates to the field of medical instruments, in particular to a uterine cavity endoscope which comprises an insertion mechanism, a handle shell and a driving mechanism, the insertion mechanism comprises a lens assembly and an intubation tube assembly, the lens assembly is installed at one end of the intubation tube assembly, and the end, away from the lens assembly, of the intubation tube assembly is inserted into the handle shell. The intubation tube assembly comprises an inner tube and an outer tube slidably arranged on the inner tube in a sleeving mode, a gap is formed between the inner tube and the outer tube, the gap between the inner tube and the outer tube forms a first liquid inlet channel, the hollow interior of the inner tube forms a second liquid inlet channel during uterus distention, and the hollow interior of the inner tube forms a liquid drainage channel and an instrument channel during liquid drainage; and the driving mechanism is used for driving the outer pipe to slide back and forth on the inner pipe so as to realize communication and blocking between the first liquid inlet channel and the second liquid inlet channel. The utility model solves the problems that the uterus distension speed is slow when the liquid enters the uterus and the liquid drainage pipeline is easy to interfere with other pipelines when the liquid drainage pipeline is used for draining the liquid in the conventional uterine cavity endoscope.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an intrauterine endoscope. Background Art

[0002] The intrauterine endoscope is one of the commonly used instruments for current intrauterine examination and treatment. Usually, the lens is inserted into the uterine cavity through an intubation tube to magnify and display the part to be observed, perform observation and sampling of diseased tissues, and achieve accurate detection, diagnosis and surgical treatment.

[0003] The existing intrauterine endoscope usually includes a liquid channel, and the uterine cavity is inflated by injecting inflation liquid into the uterine cavity through the liquid channel, so as to clearly observe the situation inside the uterine cavity. However, the existing intrauterine endoscope often simply combines the liquid inlet channel, the liquid discharge channel and the optical channel, resulting in unreasonable utilization of the internal space of the intrauterine endoscope and making the spatial volume of the intrauterine endoscope relatively large. The gap between the inner tube and the outer tube is used as the liquid inlet channel, and the inflation speed is slow when inflating the uterine cavity, which prolongs the operation time to a certain extent. Some hysteroscopes discharge the liquid by inserting a drainage tube. For example, the Chinese utility model patent with the patent number CN202121476565.9, "An Intrauterine Endoscope and an Endoscopic Treatment System", realizes the discharge of the liquid in the uterine cavity by inserting an overflow tube into the instrument channel. However, this drainage method not only makes the spatial volume of the intrauterine endoscope relatively large, but also makes the operation of the intrauterine endoscope inconvenient, resulting in reduced drainage efficiency. Moreover, when the inserted overflow tube is operated, it is easy to contact or collide with the pipelines corresponding to other channels, resulting in the displacement of the positions of other pipelines and reducing the corresponding functional effects. Summary of the Utility Model

[0004] In view of this, the purpose of the present utility model is to provide an intrauterine endoscope to at least solve the problems that the inflation speed is slow when inflating the uterine cavity with liquid and the drainage pipeline is easy to interfere with other pipelines in the existing intrauterine endoscope.

[0005] The present utility model solves the above technical problems through the following technical means:

[0006] The intrauterine endoscope of the present utility model includes an insertion mechanism, a handle housing and a driving mechanism. The insertion mechanism includes a lens assembly and an intubation tube assembly. The lens assembly is installed at one end of the intubation tube assembly. The end of the intubation tube assembly away from the lens assembly is inserted into the handle housing. The intubation tube assembly includes an inner tube and an outer tube slidably sleeved on the inner tube. There is a gap between the inner tube and the outer tube, and the gap between the inner tube and the outer tube constitutes a first liquid inlet channel. When inflating the uterine cavity, the hollow interior of the inner tube constitutes a second liquid inlet channel. When discharging the liquid, the hollow interior of the inner tube constitutes a drainage channel and an instrument channel;

[0007] The driving mechanism is used to drive the outer tube to slide back and forth on the inner tube to realize the connection and blockage between the first liquid inlet channel and the second liquid inlet channel.

[0008] In some embodiments, the driving mechanism includes a tube seat slidably installed in the handle housing. The tube seat is connected with a liquid inlet connecting pipe. The inner tube passes through the tube seat, and a sealing sleeve is installed between the inner tube and the tube seat. The sealing sleeve is slidably sleeved on the inner tube. One end of the sealing sleeve is fixedly connected with the tube seat, and the gap between the other end of the sealing sleeve and the tube seat forms a water injection cavity. The water injection cavity is communicated with the liquid inlet connecting pipe. The sealing sleeve has a radial water passing hole. The inner tube is provided with a water inlet hole in the sealing sleeve. The water injection cavity is communicated with the water passing hole and the first liquid inlet channel. The tube seat slides to drive the sealing sleeve to slide on the inner tube to realize the alignment and misalignment between the water inlet hole and the water passing hole.

[0009] In some embodiments, the tube seat is connected with a knob. The knob is slidably installed outside the handle housing. The knob slides outside the handle housing to drive the tube seat to slide in the handle housing.

[0010] In some embodiments, the driving mechanism for driving the outer tube to slide back and forth on the inner tube can also realize the exposure and hiding of the lens assembly.

[0011] In some embodiments, one end of the outer tube far from the lens assembly is fixed in the tube seat. One end of the inner tube close to the lens assembly has an elastic piece. One end of the elastic piece is integrally formed with the inner tube, and the other end of the elastic piece is connected to the lens assembly. One end of the lens assembly facing the intubation assembly has an inclined surface. When the tube seat slides towards the lens assembly to drive the outer tube to slide, the lens assembly can be hidden. When the tube seat slides away from the lens assembly to drive the outer tube to slide, the lens assembly can be exposed.

[0012] In some embodiments, one end of the inner tube close to the lens assembly has a first notch, and the elastic piece is connected at the position of the first notch; one end of the inner tube far from the handle housing has a support sleeve, and the support sleeve is located in the outer tube and sleeved on the elastic piece.

[0013] In some embodiments, a three-way pipe sleeve is installed at one end of the handle housing far from the lens assembly. One end of the three-way pipe sleeve is inserted into the handle housing and communicated with the inner tube. The three-way pipe sleeve has a liquid discharge connecting pipe, and a guide sleeve and a sealing ring are installed in the three-way pipe sleeve.

[0014] In some embodiments, a support pipe is sleeved on one end of the inner tube far from the lens assembly. The support pipe is inserted into the three-way pipe sleeve, and a liner is installed in the support pipe. One end of the liner is communicated with the inner tube, and the other end is communicated with the three-way pipe sleeve.

[0015] In some embodiments, a control board is further installed inside the handle housing. A Hall switch is installed on the control board, and a magnet is installed on the driving mechanism at a position corresponding to the Hall switch. An indicator light is also installed on the handle housing. The Hall switch can sense the magnet to determine the position of the tube socket and control the light color of the indicator light.

[0016] In some embodiments, a pressure sensor is further installed on the control board, and the pressure sensor is used to detect the pressure of the liquid inlet channel.

[0017] For the uterine cavity endoscope of the present invention, when inflating the uterine cavity, the first liquid inlet channel and the second liquid inlet channel simultaneously feed liquid. On the one hand, the inflation speed can be accelerated to inflate the uterine cavity as soon as possible. On the other hand, the hollow interior of the inner tube and the gap between the inner tube and the outer tube are used as the liquid inlet channels, making full use of the internal space and avoiding the increase in the radial dimension of the insertion mechanism caused by adding too many external structures. When performing instrument operations, the hollow interior of the inner tube serves as both the instrument channel and the drainage channel, avoiding the increase in the radial dimension of the insertion mechanism caused by using an overflow tube. At this time, the liquid inlet channel and the drainage channel are separated from each other without interference.

[0018] For the uterine cavity endoscope of the present invention, the radial dimension of the insertion mechanism can be flexibly adjusted. And only by moving the tube socket to drive the outer tube to slide can the radial dimension of the plug part of the insertion mechanism be adjusted, which is convenient and flexible to use. Specifically, when the tube socket slides towards the direction close to the lens assembly to drive the outer tube to slide until the outer tube sleeves on the lens assembly, that is, the lens assembly is hidden inside the outer tube, so as to reduce the radial dimension of the plug end of the insertion mechanism, which is suitable for the insertion mechanism to be inserted into the uterine cavity or taken out from the uterine cavity to avoid secondary injury. When the tube socket slides away from the lens assembly to drive the outer tube to slide until the lens assembly is exposed, at this time, a working instrument can be inserted along the inner tube, and the working instrument extends out of the outer tube and lifts the lens assembly. The uterine cavity endoscope of the present invention solves the problems existing in the existing hysteroscope that the plug part with a relatively large outer diameter may scratch the cervical orifice to cause secondary injury, and reducing the radial dimension of the insertion tube will inevitably narrow the insertion channel of the working instrument, and the narrow insertion channel of the working instrument will increase the operation difficulty and reduce the surgical efficiency. Description of the Drawings

[0019] Figure 1 is a cross-sectional view of the uterine cavity endoscope of the present invention;

[0020] Figure 2 is Figure 1 an enlarged structural schematic diagram of part A in

[0021] Figure 3 is a structural schematic diagram of the uterine cavity endoscope of the present invention;

[0022] Figure 4 is a structural schematic diagram of the tube socket;

[0023] Figure 5 is a schematic structural diagram of the inner tube;

[0024] Figure 6 is a schematic structural diagram of the sealing sleeve;

[0025] Among them, the insertion mechanism 100, the lens assembly 110, the inclined surface 111, the cannula assembly 120, the inner tube 121, the water inlet hole 1211, the elastic piece 1212, the first notch 1213, the outer tube 122, the water outlet hole 1221, the support sleeve 123, the driving mechanism 200, the tube seat 210, the knob 211, the liquid inlet connecting pipe 212, the groove 213, the magnet 220, the handle housing 300, the sealing sleeve 400, the water passing hole 410, the control board 500, the tee pipe sleeve 600, the liquid discharge connecting pipe 610, the guide sleeve 620, the sealing ring 630, the support pipe 710, the liner tube 720, the first Luer connector 810, the second Luer connector 820, the indicator light 900, the water injection cavity 0. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] For those conditions not specified in the following embodiments, they are carried out according to conventional conditions or conditions recommended by the manufacturer. For raw materials, equipment or instruments not specified for the manufacturer, they are all conventional products that can be obtained through the market.

[0028] Regarding the terms "comprising", "including", "having", "containing", etc. used herein, they are all open-ended terms, that is, they are intended to include but not limited to.

[0029] Please refer to Figures 1-6 :

[0030] An embodiment of the present utility model provides a uterine cavity endoscope, which includes an insertion mechanism 100, a handle housing 300, and a driving mechanism 200. The insertion mechanism 100 includes a lens assembly 110 and an intubation assembly 120. The lens assembly 110 is installed at one end of the intubation assembly 120. The end of the intubation assembly 120 away from the lens assembly 110 is inserted into the handle housing 300. The intubation assembly 120 includes an inner tube 121 and an outer tube 122 slidably sleeved on the inner tube 121. There is a gap between the inner tube 121 and the outer tube 122, and the gap between the inner tube 121 and the outer tube 122 forms a first liquid inlet channel. When the uterine cavity is inflated, the hollow interior of the inner tube 121 forms a second liquid inlet channel. When draining liquid, the hollow interior of the inner tube 121 forms a drainage channel and an instrument channel. The driving mechanism 200 is used to drive the outer tube 122 to slide back and forth on the inner tube 121 to realize the connection and blockage between the first liquid inlet channel and the second liquid inlet channel.

[0031] With the above technical solution, when the uterine cavity is inflated, the first liquid inlet channel and the second liquid inlet channel are filled with liquid simultaneously. On the one hand, it can accelerate the inflation speed of the uterine cavity and inflate the uterine cavity as soon as possible. On the other hand, the hollow interior of the inner tube 121 and the gap between the inner tube 121 and the outer tube 122 are used as liquid inlet channels, making full use of the internal space and avoiding the increase of the radial dimension of the insertion mechanism 100 due to adding too many external structures. When performing instrument operations, the hollow interior of the inner tube 121 serves as both an instrument channel and a drainage channel, avoiding the increase of the radial dimension of the insertion mechanism 100 caused by using an overflow tube. At this time, the liquid inlet channel and the drainage channel are separated from each other and do not interfere with each other.

[0032] Please refer to Figure 4 and Figure 5 , in this embodiment, the driving mechanism 200 includes a tube seat 210 slidably installed in the handle housing 300. The tube seat 210 is connected with a liquid inlet connecting pipe 212. The inner tube 121 passes through the tube seat 210, and a sealing sleeve 400 is installed between the inner tube 121 and the tube seat 210. The sealing sleeve 400 is slidably sleeved on the inner tube 121. One end of the sealing sleeve 400 is fixedly connected with the tube seat 210, and the gap between the other end of the sealing sleeve 400 and the tube seat 210 forms a water injection cavity 0. The water injection cavity 0 is communicated with the liquid inlet connecting pipe 212. The sealing sleeve 400 has a radial water passing hole 410. The inner tube 121 is provided with a water inlet hole 1211 inside the sealing sleeve 400. The water injection cavity 0 is communicated with the water passing hole 410 and the first liquid inlet channel. The tube seat 210 slides to drive the sealing sleeve 400 to slide on the inner tube 121 to realize the alignment and misalignment between the water inlet hole 1211 and the water passing hole 410.

[0033] In this embodiment, the tube seat 210 is connected with a knob 211. The knob 211 is slidably installed outside the handle housing 300. The knob 211 slides outside the handle housing 300 to drive the tube seat 210 to slide inside the handle housing 300.

[0034] By toggling the knob 211, the knob 211 drives the socket 210 to slide within the handle housing 300. During uterine dilation, the socket 210 slides to align the water passage hole 410 on the sealing sleeve 400 with the water inlet hole 1211 on the inner tube 121. The water injected from the liquid inlet connecting pipe 212 enters the water injection cavity 0. A part of the water directly enters through the first liquid inlet channel, and another part passes through the water passage hole 410 and the water inlet hole 1211 to enter the second liquid inlet channel inside the inner tube 121. At this time, the first liquid inlet channel and the second liquid inlet channel simultaneously inject liquid for uterine dilation to achieve the purpose of rapid uterine dilation. When the pressure in the uterine cavity is sufficient, toggling the knob 211 drives the socket 210 to slide so that the water passage hole 410 on the sealing sleeve 400 is misaligned with the water inlet hole 1211. At this time, only the first liquid inlet channel injects liquid to maintain the pressure in the uterus.

[0035] In this embodiment, in order to enable the socket 210 to slide more stably within the handle housing 300, the outer wall of the socket 210 has a groove 213, and at the position corresponding to the groove 213 within the handle housing 300, there is a protrusion that is embedded within the groove 213.

[0036] In this embodiment, the driving mechanism 200 is used to drive the outer tube 122 to slide back and forth on the inner tube 121 and can also expose and hide the lens assembly 110.

[0037] In this embodiment, one end of the outer tube 122 away from the lens assembly 110 is fixed within the socket 210. One end of the inner tube 121 close to the lens assembly 110 has an elastic piece 1212. One end of the elastic piece 1212 is integrally formed with the inner tube 121, and the other end of the elastic piece 1212 is connected to the lens assembly 110. One end of the lens assembly 110 facing the intubation assembly 120 has an inclined surface 111. When the socket 210 slides towards the lens assembly 110, driving the outer tube 122 to slide can hide the lens assembly 110. When the socket 210 slides away from the lens assembly 110, driving the outer tube 122 to slide can expose the lens assembly 110.

[0038] In this embodiment, the lens assembly 110 is used to acquire images of the uterine interior. The lens assembly 110 has a camera lens, an LED lamp, and an FPC cable. The camera lens is used to capture images of the uterine interior. The LED lamp is used to illuminate the uterine interior to obtain clearer images of the uterine cavity interior. The FPC cable is connected to both the camera lens and the LED lamp. The FPC cable enters the gap between the inner tube 121 and the outer tube 122 from the upper side of the elastic piece 1212 and is electrically connected to the control board 500 within the handle housing 300 through the outside of the sealing sleeve 400.

[0039] When the pipeline slides away from the lens assembly 110, it can drive the outer tube 122 to slide and expose the lens assembly 110. At this time, the elastic sheet 1212 has two possible states. One is that the elastic sheet 1212 itself has a large elastic force. After the lens assembly 110 extends out of the outer tube 122, the elastic sheet 1212 returns to a flat state and lifts the lens assembly 110. The other is that the elastic sheet 1212 itself has a small elastic force. After the lens assembly 110 extends out of the outer tube 122, the elastic sheet 1212 still remains in a deformed and lying-down state. At this time, the lens assembly 110 can be lifted by a working instrument inserted from the inner tube 121.

[0040] During the process of the insertion mechanism 100 inserting into the uterine cavity, since the cervix is relatively narrow, at this time, an insertion mechanism 100 with a relatively small radial dimension is required. Therefore, during the process of the insertion mechanism 100 inserting into the uterine cavity, the lens assembly 110 is hidden inside the outer tube 122. When it is necessary to obtain images inside the uterine cavity and perform instrument operations, at this time, the lens assembly 110 needs to be exposed outside the outer tube 122. Just toggle the button 211 to drive the tube seat 210 to slide in a direction away from the lens assembly 110. The sliding of the tube seat 210 drives the outer tube 122 to slide in a direction away from the lens assembly 110, thereby exposing the lens assembly 110. The lens assembly 110 can be lifted under the restoring force of the elastic sheet 1212, or the lens assembly 110 can also be pushed up by an instrument passing through the inner tube 121.

[0041] Please refer to Figure 5 , in this embodiment, in order to enable the elastic sheet 1212 to deform and move better, one end of the inner tube 121 close to the lens assembly 110 has a first notch 1213, and the elastic sheet 1212 is connected at the position of the first notch 1213. In order to prevent the part of the outer tube 122 close to the lens assembly 110 from deforming, a support sleeve 123 is provided at one end of the inner tube 121 away from the handle housing 300. The support sleeve 123 is located inside the outer tube 122 and sleeved on the elastic sheet 1212, and the support sleeve 123 is used to support the outer tube 122.

[0042] In this embodiment, in order to enable the injected water to smoothly enter the uterine cavity for uterine cavity dilation during uterine cavity dilation, the end of the outer tube 122 close to the lens assembly 110 has a water outlet hole 1221.

[0043] In this embodiment, a three-way pipe sleeve 600 is installed at one end of the handle housing 300 away from the lens assembly 110. One end of the three-way pipe sleeve 600 is inserted into the handle housing 300 and communicated with the inner tube 121. The three-way pipe sleeve 600 has a liquid discharge connecting pipe 610, and a guide sleeve 620 and a sealing ring 630 are installed inside the three-way pipe sleeve 600.

[0044] In this embodiment, a support tube 710 is sleeved on one end of the inner tube 121 away from the lens assembly 110. The support tube 710 is inserted into the tee tube sleeve 600. A liner tube 720 is installed inside the support tube 710. One end of the liner tube 720 is communicated with the inner tube 121, and the other end is communicated with the tee tube sleeve 600.

[0045] One end of the tee tube sleeve 600 connected to the liner tube 720 serves as the first channel, one end connected to the liquid drainage connection tube 610 serves as the second channel, and one end for inserting the instrument serves as the third channel, thus forming a tee. The working instrument for minimally invasive surgery passes through the guide sleeve 620, passes through the sealing ring 630, enters the liner tube 720 and the inner tube 121 in sequence, and passes out of the inner tube 121 to perform surgical treatment on the relevant part. The sealing ring 630 plays a sealing role in the internal cavity of the tee tube sleeve 600 to prevent the liquid in the internal cavity of the tee tube sleeve 600 from flowing out of the guide sleeve 620.

[0046] In this embodiment, a first Luer connector 810 and a second Luer connector 820 are further fixed on the handle housing 300. One end of the first Luer connector 810 is connected to an external suction pipe, and the other end is connected to the liquid drainage connection tube 610 on the tee tube sleeve 600 for sucking and discharging the liquid in the uterine cavity. One end of the second Luer connector 820 is communicated with an external water injection pipe, and the other end is respectively connected to the liquid inlet connection tube 212 on the tube base 210 and the connector of the pressure sensor through a tee joint for injecting water into the uterine cavity to expand the uterus and detecting the uterine expansion pressure through the pressure sensor.

[0047] In this embodiment, a control board 500 is further installed inside the handle housing 300. A Hall switch is installed on the control board 500, and a magnet 220 is installed at a position corresponding to the Hall switch on the driving mechanism 200. An indicator light 900 is further installed on the handle housing 300. The Hall switch can sense the magnet 220 to determine the position of the tube base 210 and control the light color of the indicator light 900.

[0048] In this embodiment, the cable connecting the control board 500 passes out of the handle housing 300 and is connected to an external uterine expansion host.

[0049] Slide the tube base 210 in the direction close to the lens assembly 110. At the same time, the magnet moves away from the Hall switch, and the lens assembly 110 is gradually hidden into the outer tube 122. At this time, the indicator light turns yellow; slide the tube base 210 in the direction away from the lens assembly 110. At the same time, the magnet approaches the Hall switch, and the lens assembly 110 is gradually exposed out of the outer tube 122. At this time, the indicator light turns green, and the instrument channel is opened, facilitating the entry of the instrument into the uterine cavity to perform relevant surgeries. Through the light color of the indicator light, the position of the tube base 210 can be clearly known, so as to clearly know the current working state of the uterine cavity endoscope, which is convenient for the doctor to perform relevant operations.

[0050] In this embodiment, a pressure sensor is also installed on the control board 500. The pressure sensor is used to detect the pressure in the liquid inlet channel so as to clearly know the pressure inside the uterine cavity. When the pressure is too high, it can be adjusted in time to avoid excessive uterine cavity dilation.

[0051] In this embodiment, in order to minimize the radial dimension of the intubation assembly 120 as much as possible, and also for the smooth passage of the FPC cable and the smooth flow of the injected water, the inner tube 121 and the outer tube 122 are eccentrically arranged. The side with a larger gap between the eccentrically arranged inner tube 121 and outer tube 122 serves as the main channel of the first liquid inlet channel, which is used for the FPC cable to pass through the channel and the main flow channel for water injection and liquid inlet.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention. The technologies, shapes, and structures not detailedly described in the present invention are all well-known technologies.

Claims

1. A hysteroscopic endoscope, characterized in that: The device comprises an insertion mechanism, a handle shell and a driving mechanism, wherein the insertion mechanism comprises a lens assembly and an insertion tube assembly, wherein the lens assembly is mounted at one end of the insertion tube assembly, and the end of the insertion tube assembly away from the lens assembly is plugged into the handle shell, wherein the insertion tube assembly comprises an inner tube and an outer tube slidably sleeved on the inner tube, wherein a gap is provided between the inner tube and the outer tube, and the gap between the inner tube and the outer tube constitutes a first liquid inlet channel, wherein the hollow interior of the inner tube constitutes a second liquid inlet channel during uterine distension, and wherein the hollow interior of the inner tube constitutes a liquid discharge channel and an instrument channel during liquid discharge; The driving mechanism is used to drive the outer tube to slide back and forth on the inner tube to achieve communication and blocking between the first liquid inlet channel and the second liquid inlet channel.

2. The hysteroendoscope according to claim 1, characterized in that: The driving mechanism includes a tube seat slidably installed in the handle housing, the tube seat is connected to a liquid inlet pipe, the inner tube passes through the tube seat, and a sealing sleeve is installed between the inner tube and the tube seat, the sealing sleeve is slidably sleeved on the inner tube, one end of the sealing sleeve is fixedly connected to the tube seat, and the gap between the other end of the sealing sleeve and the tube seat constitutes a water injection chamber, the water injection chamber is connected to the liquid inlet pipe, the sealing sleeve has a radial water through hole, the inner tube is provided with a water inlet hole in the sealing sleeve, the water injection chamber is connected to the water through hole and the first liquid inlet channel, the tube seat slides to drive the sealing sleeve to slide on the inner tube to achieve alignment and misalignment between the water inlet hole and the water through hole.

3. The hysteroendoscope according to claim 2, characterized in that: The tube seat is connected with a dial button, and the dial button is slidably mounted on the outside of the handle shell. The sliding of the dial button outside the handle shell drives the tube seat to slide inside the handle shell.

4. The hysteroendoscope according to claim 1, 2 or 3, characterized in that: The driving mechanism is used to drive the outer tube to slide back and forth on the inner tube and can also realize the exposure and hiding of the lens assembly.

5. The hysteroendoscope according to claim 4, characterized in that: One end of the outer tube away from the lens assembly is fixed in the tube seat, and one end of the inner tube close to the lens assembly has an elastic sheet, one end of the elastic sheet is integrally formed with the inner tube, and the other end of the elastic sheet is connected to the lens assembly. The end of the lens assembly facing the insertion tube assembly has an inclined surface, and when the tube seat slides toward the lens assembly, it drives the outer tube to slide to hide the lens assembly, and when the tube seat slides away from the lens assembly, it drives the outer tube to slide to expose the lens assembly.

6. The hysteroendoscope according to claim 5, characterized in that: The inner tube has a first notch at one end close to the lens assembly, and the elastic sheet is connected to the first notch; One end of the inner tube away from the handle shell is provided with a support sleeve, and the support sleeve is located inside the outer tube and sleeved on the elastic sheet.

7. The hysteroendoscope according to claim 1, characterized in that: A three-way pipe sleeve is installed at one end of the handle shell away from the lens assembly, one end of the three-way pipe sleeve is inserted into the handle shell and communicated with the inner tube, the three-way pipe sleeve has a drainage pipe, and a guide sleeve and a sealing ring are installed in the three-way pipe sleeve.

8. The hysteroendoscope according to claim 7, characterized in that: A support tube is sleeved on one end of the inner tube away from the lens assembly. The support tube is inserted into a three-way pipe sleeve. A liner tube is installed in the support tube. One end of the liner tube is connected to the inner tube, and the other end is connected to the three-way pipe sleeve.

9. The hysteroendoscope according to claim 2, characterized in that: A control panel is also installed in the handle housing, a Hall switch is installed on the control panel, a magnet is installed at the position corresponding to the Hall switch on the drive mechanism, an indicator light is also installed on the handle housing, and the Hall switch can sense the magnet to determine the position of the tube socket and control the light color of the indicator light.

10. The hysteroendoscope according to claim 9, characterized in that: A pressure sensor is also installed on the control board, and the pressure sensor is used to detect the pressure of the liquid inlet channel.

Images