Sheath replaceable electronic hysteroscope

Abstract

The application discloses a sheath replaceable electronic hysteroscope, which comprises a hysteroscope body, an inner sheath and an outer sheath. The hysteroscope body comprises a mirror tube and a mirror body. One end of the mirror tube is provided with a mirror surface, and an image module is arranged on the mirror surface. The other end of the mirror tube is connected with the mirror body. An instrument channel is arranged in the mirror body, and a communication cable is arranged on one side of the mirror body. The inner sheath comprises an inner sheath body and an inner sheath body. One end of the inner sheath body is connected with the inner sheath body, and the other end of the inner sheath body is provided with a first connecting mechanism for connecting with the end of the mirror body away from the mirror tube. The outer sheath comprises an outer sheath body and an outer sheath body. One end of the outer sheath body is connected with the outer sheath body, and the outer sheath body is provided with a communication outer sheath inner channel. The other end of the outer sheath body is provided with a second connecting mechanism for connecting with the end of the mirror body close to the mirror tube. The electronic hysteroscope can be assembled to meet different surgical requirements by replacing different inner sheaths and outer sheaths, and is suitable for a wide range of applications.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical equipment, in particular to a sheath replaceable electronic hysteroscope. BACKGROUND

[0002] Hysteroscopy is a relatively popular gynecological hysteroscopic minimally invasive endoscopic technology at present, and the specifications of the hysteroscope tube and the matched sheath are also relatively many. The thinnest diameter of the hysteroscope tube is 2mm, the thinnest diameter of the sheath is 2.8mm, the thickest diameter of the hysteroscope tube is 4mm, and the thickest diameter of the sheath is 7.9mm. Hysteroscopes can be divided into examination hysteroscopes and surgical hysteroscopes in terms of function. The examination hysteroscope is divided into a hysteroscope without an instrument channel and a hysteroscope with an instrument channel. Among them, the hysteroscope tube of the hysteroscope without an instrument channel is relatively thin, and the sheath is also relatively small. The hysteroscope tube of the surgical hysteroscope is relatively thick, and the sheath is also relatively thick. The existing hysteroscope is usually self-contained according to the purpose and the required sheath specification, and the sheaths of different hysteroscopes are not compatible with each other, so that the existing hysteroscope has a single purpose and a narrow application range. SUMMARY

[0003] The present application provides a sheath replaceable electronic hysteroscope to solve the technical problem that the existing hysteroscope has a single purpose and a narrow application range. An instrument channel is arranged in the mirror body of the hysteroscope body for the inner sheath to pass through, and an outer sheath inner channel is arranged in the outer sheath for the hysteroscope body to pass through, so that the inner sheath and the outer sheath can be replaced during the use of the electronic hysteroscope. Different inner sheaths and outer sheaths can be replaced to assemble an electronic hysteroscope that meets different surgical requirements, and the application range is wide.

[0004] In order to solve the above technical problem, the present application provides a sheath replaceable electronic hysteroscope, which comprises a hysteroscope body, an inner sheath and an outer sheath.

[0005] The hysteroscope body comprises a hysteroscope tube and a mirror body. One end of the hysteroscope tube is provided with a mirror surface, and an image module is arranged on the mirror surface. The other end of the hysteroscope tube is connected with the mirror body. An instrument channel is arranged in the mirror body, and a communication cable is arranged on one side of the mirror body.

[0006] The inner sheath comprises an inner sheath body and an inner sheath body. One end of the inner sheath body is connected with the inner sheath body, and the other end of the inner sheath body is provided with a first connecting mechanism. The first connecting mechanism is used for connecting the one end of the mirror body away from the hysteroscope tube when the inner sheath body passes through the instrument channel and the inner sheath body is arranged in the instrument channel.

[0007] The outer sheath tube comprises an outer sheath tube body and an outer sheath tube body; the outer sheath tube body is connected with one end of the outer sheath tube body, and a communication channel is arranged in the outer sheath tube body; the other end of the outer sheath tube body is provided with a second connecting mechanism; the second connecting mechanism is used for connecting the mirror body close to the one end of the mirror tube when the mirror tube is arranged in the outer sheath channel.

[0008] As a preferred solution, a pressure measuring channel is arranged in the mirror tube; a first channel port of the pressure measuring channel is located on the mirror surface, and a second channel port of the pressure measuring channel is located on one side of the mirror body; a pressure detection module is arranged on one side of the pressure measuring channel close to the second channel port.

[0009] As a preferred solution, the hysteroscope body further comprises a water inlet valve; the bottom opening of the water inlet valve is in communication with the instrument channel.

[0010] As a preferred solution, an inner sheath inner channel is arranged in the inner sheath tube body;

[0011] An inner sheath perfusion opening is arranged on the inner sheath tube body; when the inner sheath tube body is arranged in the instrument channel and the inner sheath tube body is arranged in the instrument channel, the inner sheath perfusion opening is arranged below the bottom opening of the water inlet valve, so that the bottom opening of the water inlet valve is in communication with the inner sheath inner channel.

[0012] As a preferred solution, the outer sheath tube further comprises a reflux pipe; the reflux pipe is arranged on one side of the outer sheath tube body, and one side opening of the reflux pipe is in communication with the outer sheath inner channel;

[0013] A plurality of water return holes are arranged on one side of the outer sheath tube body away from the outer sheath tube body;

[0014] An indication scale is arranged on the outer wall of the outer sheath tube body.

[0015] As a preferred solution, the hysteroscope body further comprises a lens barrel; one end of the lens barrel is connected with the side wall of the mirror body, and the other end of the lens barrel is connected with the communication cable.

[0016] As a preferred solution, the lens barrel comprises a first lens barrel part and a second lens barrel part; one end of the first lens barrel part is arranged vertically on the side wall of the mirror body, the other end of the first lens barrel part is connected with one end of the second lens barrel part, and the other end of the second lens barrel part is connected with the communication cable; the included angle formed by the first lens barrel part and the second lens barrel part is a right angle.

[0017] As a preferred solution, a plurality of light source modules are further arranged on the mirror surface.

[0018] As a preferred solution, an adapter is further included;

[0019] The first connecting mechanism has an adapter connection part on the side away from the inner sheath body;

[0020] The adapter includes an adapter body, a third connecting mechanism, and a sealing cap;

[0021] The adapter body has a channel running through its opposite two sides. A sealing valve is built into one side of the adapter body, and one side of the adapter body is connected to the third connecting mechanism. The sealing cap is located on the other side of the adapter body. The third connecting mechanism is used to connect to the adapter connection part or the end of the lens body away from the lens tube.

[0022] As a preferred embodiment, the cross-sections of both the endoscope tube and the inner sheath are semi-circular, while the cross-section of the outer sheath is circular.

[0023] Compared with the prior art, the beneficial effect of the embodiments of the present invention is that the hysteroscope body has an instrument channel for the inner sheath to pass through, and the outer sheath has an inner channel for the hysteroscope body to pass through, so that the inner and outer sheaths can be replaced during the use of the electronic hysteroscope. In this way, by replacing different inner and outer sheaths, electronic hysteroscopes that meet different surgical needs can be assembled, and the scope of application is wide. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the electronic hysteroscope with replaceable sheath in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the hysteroscope body in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the inner sheath tube in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the outer sheath tube in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the adapter structure in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the end face of the electronic hysteroscope with a replaceable sheath in an embodiment of the present invention;

[0030] The components include: 1. Hysteroscope body; 101. Endoscope tube; 102. Endoscope body; 103. Mirror surface; 1031. Image module; 1032. First channel opening; 1033. Second channel opening; 1034. Light source module; 104. Communication cable; 105. Water inlet valve; 106. First endoscope tube section; 107. Second endoscope tube section; 2. Inner sheath; 201. Inner sheath tube body; 202. Inner sheath tube body; 203. First connecting mechanism; 204. Inner sheath irrigation opening; 205. Adapter connection part; 3. Outer sheath; 301. Outer sheath tube body; 302. Outer sheath tube body; 303. Second connecting mechanism; 304. Return pipe fitting; 305. Return water hole; 4. Adapter; 401. Adapter body; 402. Third connecting mechanism; 403. Sealing cap. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] See Figures 1 to 6 This invention provides an electronic hysteroscope with replaceable sheath, comprising a hysteroscope body 1, an inner sheath 2, and an outer sheath 3;

[0033] The hysteroscope body 1 includes a tube 101 and a body 102; one end of the tube 101 has a mirror surface 103, and an image module 1031 is provided on the mirror surface 103; the other end of the tube 101 is connected to the body 102; the body 102 has an instrument channel, and a communication cable 104 is provided on one side of the body 102.

[0034] The inner sheath tube 2 includes an inner sheath tube body 201 and an inner sheath tube 202; one end of the inner sheath tube body 201 is connected to one end of the inner sheath tube 202, and the other end of the inner sheath tube 202 is provided with a first connecting mechanism 203; the first connecting mechanism 203 is used to connect to the end of the endoscope 102 away from the endoscope tube 101 when the inner sheath tube body 201 passes through the instrument channel and the inner sheath tube 202 is located in the instrument channel.

[0035] The outer sheath tube 3 includes an outer sheath tube body 301 and an outer sheath tube body 302; the outer sheath tube body 301 is connected to one end of the outer sheath tube body 302, and an inner channel communicating with the outer sheath tube body 302 is provided inside the outer sheath tube body 301; the other end of the outer sheath tube body 302 is provided with a second connecting mechanism 303; the second connecting mechanism 303 is used to connect the end of the endpiece tube 102 near the endpiece tube 101 when the endpiece tube 101 is located in the inner channel of the outer sheath.

[0036] Specifically, in this embodiment, the image module 1031 provided on the mirror 103 enables the acquisition of uterine cavity images during the insertion of the endoscope by connecting the communication cable 104 provided on one side of the endoscope 102 to a control terminal with a display module. The endoscope 102 is provided with an instrument channel for the inner sheath 2 to pass through, facilitating the replacement of the inner sheath 2 according to surgical needs.

[0037] Furthermore, the inner sheath 2 includes an inner sheath body 201 and an inner sheath tube 202. In this embodiment, a first connecting mechanism 203 is provided at one end of the inner sheath tube 202. When the inner sheath body 201 passes through the instrument channel and the inner sheath tube 202 is located in the instrument channel, the first connecting mechanism 203 can lock with the end of the endoscope 102 away from the endoscope tube 101, thereby effectively preventing the inner sheath 2 from shifting during the operation.

[0038] Furthermore, the outer sheath 3 includes an outer sheath body 301 and an outer sheath tube 302. The outer sheath body 301 and the outer sheath tube 302 are connected by an inner channel for the hysteroscope body 1 to pass through, facilitating replacement of the outer sheath 3 according to surgical needs. In addition, this embodiment features a second connecting mechanism 303 at one end of the outer sheath tube 302. When the endoscope tube 101 is positioned within the inner channel, the second connecting mechanism 303 can lock onto the end of the endoscope body 102 closest to the endoscope tube 101, effectively preventing the outer sheath 3 from becoming detached during surgery.

[0039] As one optional embodiment, the outer diameter of the inner sheath tube 201 is 10-24 French, and the diameter of the outer sheath tube 301 is 12-26 French. French is a unit of measurement for tube size, and 1 French = 1 / 3 mm.

[0040] As a preferred embodiment, the endoscope tube 101 is provided with a pressure measurement channel; the first channel opening 1032 of the pressure measurement channel is located on the mirror surface 103, and the second channel opening 1033 of the pressure measurement channel is located on one side of the endoscope body 102; a pressure detection module is provided on the side of the pressure measurement channel near the second channel opening 1033.

[0041] In this embodiment, the endoscope tube 101 is provided with a pressure measurement channel. The pressure measurement channel has a first channel opening 1032 located on the mirror surface 103 and a second channel opening 1033 located on one side of the endoscope body 102. A pressure detection module, such as a pressure sensor, is provided on the side of the pressure measurement channel near the second channel opening 1033. For example, the pressure measurement channel can be connected to the pressure detection module through a flexible tube. During the operation, a pressure measurement medium, such as saline, is added to the pressure measurement channel, so that the pressure signal at the end of the endoscope tube 101 with the mirror surface 103 is transmitted to the pressure detection module through the pressure measurement medium, thereby obtaining the intrauterine pressure signal.

[0042] It is worth noting that when the hysteroscope body 1 is assembled with the inner sheath 2 and outer sheath 3, hysteroscopic diagnostic and therapeutic techniques can be performed during surgery using a fluid management system that precisely monitors the distension pressure of the uterine cavity irrigation fluid. Without the inner sheath 2 and outer sheath 3, the pressure measurement channel can be converted into an irrigation channel, utilizing only the thinner outer diameter hysteroscope body 1. This method is suitable for infertile patients, nulliparous women, postmenopausal patients with cervical atrophy or stenosis, and patients who cannot tolerate cervical dilation.

[0043] As a preferred embodiment, the hysteroscope body 1 further includes a water inlet valve 105; the bottom opening of the water inlet valve 105 is connected to the instrument channel.

[0044] In this embodiment, the hysteroscope body 1 also includes a water inlet valve 105, and the bottom opening of the water inlet valve 105 is connected to the instrument channel, so that the instrument channel can also serve as the main irrigation channel. Specifically, when the endoscope tube 101 of the hysteroscope body 1 is located in the inner channel of the outer sheath, the space between the endoscope tube 101 of the hysteroscope body 1 and the inner wall of the outer sheath tube 301, combined with the instrument channel of the hysteroscope body 1, constitutes the irrigation channel.

[0045] As a preferred embodiment, the inner sheath tube body 201 is provided with an inner sheath channel;

[0046] The inner sheath tube 202 is provided with an inner sheath irrigation opening 204; the inner sheath irrigation opening 204 is located below the bottom opening of the water inlet valve 105 when the inner sheath tube 201 passes through the instrument channel and the inner sheath tube 202 is located in the instrument channel, so that the bottom opening of the water inlet valve 105 is connected to the inner channel of the inner sheath.

[0047] In this embodiment, the inner sheath tube body 201 is provided with an inner sheath channel, and the inner sheath tube body 202 is provided with an inner sheath irrigation opening 204. When the inner sheath tube body 201 passes through the instrument channel and the inner sheath tube body 202 is located in the instrument channel, the inner sheath irrigation opening 204 is located below the bottom opening of the water inlet valve 105 and is connected to the bottom opening of the water inlet valve 105, so that the inner sheath channel can be used as an irrigation channel. The specifications of the inner sheath channel are different depending on the outer diameter of the inner sheath tube body 201, and consequently, the specifications of the irrigation channel when used as an irrigation channel are also different.

[0048] As a preferred embodiment, the outer sheath tube 3 further includes a return pipe fitting 304; the return pipe fitting 304 is disposed on one side of the outer sheath tube body 302, and the opening on one side of the return pipe fitting 304 communicates with the inner channel of the outer sheath.

[0049] The outer sheath tube body 301 is provided with a plurality of water return holes 305 on the side away from the outer sheath tube body 302;

[0050] The outer wall of the outer sheath tube 301 is provided with an indicator scale.

[0051] It is worth noting that in this embodiment, the outer sheath tube 3 also includes a reflux tube 304 disposed on one side of the outer sheath tube body 302. One side opening of the reflux tube 304 is connected to the inner channel of the outer sheath. After the outer sheath tube 3 is assembled with the hysteroscope body 1 equipped with the inner sheath tube 2, the gap between the inner sheath tube body 201 and the outer sheath tube body 301 is the reflux channel, and one end opening of the reflux channel is the opening of the reflux tube 304.

[0052] As a preferred embodiment, the hysteroscope body 1 further includes a tube; one end of the tube is connected to the side wall of the hysteroscope body 102, and the other end of the tube is connected to the communication cable 104.

[0053] As a preferred embodiment, the lens barrel includes a first lens barrel portion 106 and a second lens barrel portion 107; one end of the first lens barrel portion 106 is perpendicularly disposed on the side wall of the lens body 102, the other end of the first lens barrel portion 106 is connected to one end of the second lens barrel portion 107, and the other end of the second lens barrel portion 107 is connected to the communication cable 104; the angle formed by the first lens barrel portion 106 and the second lens barrel portion 107 is a right angle.

[0054] It is worth noting that the endoscope tube in this embodiment includes a first endoscope tube portion 106 and a second endoscope tube portion 107. The angle formed by the first endoscope tube portion 106 and the second endoscope tube portion 107 is a right angle, so that the second endoscope tube is parallel to and in the same direction as the endoscope body 102 of the hysteroscope body 1.

[0055] As a preferred embodiment, the mirror 103 is further provided with a plurality of light source modules 1034.

[0056] It is worth noting that in this embodiment, a number of light source modules 1034 are provided on the mirror 103, which can provide light during the mirror insertion process, so that the image module 1031 on the mirror 103 can acquire the uterine cavity image more clearly.

[0057] Preferably, in this embodiment, the mirror 103 is provided with two light source modules 1034, and the two light source modules 1034 are respectively located on both sides of the image module 1031.

[0058] As a preferred option, adapter 4 is also included;

[0059] The first connecting mechanism 203 has an adapter connection part 205 on the side away from the inner sheath body 201;

[0060] The adapter 4 includes an adapter body 401, a third connecting mechanism 402, and a sealing cap 403;

[0061] The adapter body 401 has a channel running through its opposite sides. A sealing valve is built into one side of the adapter body 401, and one side of the adapter body 401 is connected to the third connecting mechanism 402. The sealing cap 403 is placed on the other side of the adapter body 401. The third connecting mechanism 402 is used to connect to the adapter connecting part 205 or the end of the lens body 102 away from the lens tube 101.

[0062] Specifically, the adapter 4 in this embodiment includes an adapter body 401, a third connecting mechanism 402, and a sealing cap 403. The adapter body 401 has a channel passing through its opposite sides, and one side of the adapter body 401 is connected to the third connecting mechanism 402. The third connecting mechanism 402 can lock the adapter connection part 205 of the inner sheath 2 or the end of the endpiece 102 of the hysteroscope body 1 away from the endpiece tube 101, thereby realizing the quick assembly of the adapter 4 to the inner sheath 2 or the hysteroscope body 1. When the adapter 4 is connected to the inner sheath 2 or the hysteroscope body 1, the channel in the adapter body 401 is the extension of the inner sheath channel or the instrument channel.

[0063] As a preferred embodiment, the cross-sections of the endoscope tube 101 and the inner sheath tube 201 are both semi-circular, while the cross-section of the outer sheath tube 301 is circular.

[0064] This invention provides an electronic hysteroscope with replaceable sheaths. The hysteroscope body has an instrument channel for the inner sheath to pass through, and the outer sheath has an inner channel for the hysteroscope body to pass through. This allows for the replacement of the inner and outer sheaths during the use of the electronic hysteroscope. By replacing different inner and outer sheaths, different electronic hysteroscopes can be assembled to meet different surgical needs, thus having a wide range of applications.

[0065] To enable those skilled in the art to better understand the beneficial effects of the electronic hysteroscope with replaceable sheath provided in the embodiments of the present invention, the following description uses a specific application example of outpatient hysteroscopic endometrial polyp removal surgery. The surgical procedure is as follows:

[0066] (1) The patient is placed in the lithotomy position, disinfected, draped, and anesthesia is administered.

[0067] (2) Select the appropriate outer and inner sheaths according to the surgical requirements. Insert the inner sheath into the instrument channel of the hysteroscope body and lock it. Connect the adapter to the adapter connection of the inner sheath. Insert the combination of the hysteroscope body tube and the inner sheath into the inner channel of the outer sheath and lock it, forming a continuously convection electronic hysteroscope. Connect the communication cable of the hysteroscope body to the display system and turn it on.

[0068] (3) The patient end of the irrigation catheter is connected to the inlet valve of the hysteroscope body, and the device end is connected to the pump tube of the distending pump; the patient end of the pressure measuring catheter is connected to the second channel port of the pressure measuring channel of the endoscope tube, and the device end is connected to the port of the pressure measuring unit of the distending pump. Set the pressure and flow parameters when the distending pump is turned on, start the irrigation to purge the gas from the pipeline, and prepare for irrigation and pressure measurement.

[0069] (4) Under the guidance of the display system, carefully insert the endoscope along the cervical canal. After the uterus is filled, perform a retrograde examination of the uterine cavity to find the polyp site. Remove the polyp tissue using cold knife forceps or a rotary cutting system.

[0070] (5) During the procedure, the pressure inside the uterine cavity is monitored in real time by the uterine distension pump pressure measurement unit. If the pressure is higher than the set pressure parameter, the uterine distension pump stops perfusion. When the pressure returns to within the set pressure parameter, the uterine distension pump resumes perfusion.

[0071] (6) If it is necessary to use a thicker cold knife instrument (such as a φ4mm instrument) or a thicker rotary cutting tool (such as a φ4mm tool) during the operation, remove the electronic hysteroscope, replace the inner sheath with a 22French or larger outer diameter, or the outer sheath with a 24French or larger outer diameter, reconnect the adapter, start the distending pump, evacuate the gas from the tubing, and carefully insert the endoscope into the uterine cavity to carry out the relevant surgery.

[0072] (7) After the procedure, remove the scope, turn off the distending pump and other equipment, and send the excised tissue for pathological examination.

[0073] Therefore, it can be seen that by simply replacing different inner and outer sheaths during the operation to assemble electronic hysteroscopes with different sheath specifications, the needs of different stages of the operation can be met. It has a wide range of applications and does not require the use of multiple hysteroscopes with different sheath specifications, thus avoiding the complicated and time-consuming process of changing instruments during the operation, which affects the efficiency of the operation.

[0074] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An electronic hysteroscope with replaceable sheath, characterized in that, Includes the hysteroscope body, inner sheath, and outer sheath; The hysteroscope body includes a tube and a body; one end of the tube has a mirror surface, and an image module is provided on the mirror surface; the other end of the tube is connected to the body; the body has an instrument channel, and a communication cable is provided on one side of the body; The inner sheath tube includes an inner sheath tube body and an inner sheath tube body; one end of the inner sheath tube body is connected to the inner sheath tube body, and the other end of the inner sheath tube body is provided with a first connecting mechanism; the first connecting mechanism is used to connect with the end of the endoscope body away from the endoscope tube when the inner sheath tube body is disposed in the instrument channel and the inner sheath tube body is disposed in the instrument channel. The outer sheath tube includes an outer sheath tube body and an outer sheath tube body; one end of the outer sheath tube body is connected to one end of the outer sheath tube body, and an inner outer sheath channel communicating with the inner outer sheath tube body is provided inside the outer sheath tube body; the other end of the outer sheath tube body is provided with a second connecting mechanism; the second connecting mechanism is used to connect with the end of the scope body near the outer sheath tube when the scope tube is located in the inner outer sheath channel. The hysteroscope body also includes a water inlet valve, and the bottom opening of the water inlet valve is connected to the instrument channel; when the endoscope tube is located in the inner channel of the outer sheath, the space between the endoscope tube and the inner wall of the outer sheath tube body, together with the instrument channel, forms an irrigation channel.

2. The electronic hysteroscope with replaceable sheath as described in claim 1, characterized in that, The endoscope tube is provided with a pressure measurement channel; the first channel opening of the pressure measurement channel is located on the mirror surface, and the second channel opening of the pressure measurement channel is located on one side of the endoscope body; a pressure detection module is provided on the side of the pressure measurement channel near the second channel opening.

3. The electronic hysteroscope with replaceable sheath as described in claim 1, characterized in that, The inner sheath tube body is provided with an inner sheath channel; The inner sheath tube body is provided with an inner sheath irrigation opening; the inner sheath irrigation opening is located below the bottom opening of the water inlet valve when the inner sheath tube body is installed in the instrument channel and the inner sheath tube body is installed in the instrument channel, so that the bottom opening of the water inlet valve is connected to the inner channel of the inner sheath.

4. The electronic hysteroscope with replaceable sheath as described in claim 1, characterized in that, The outer sheath also includes a return pipe fitting; the return pipe fitting is located on one side of the outer sheath body, and the opening on one side of the return pipe fitting communicates with the inner channel of the outer sheath. The outer sheath tube body is provided with several water return holes on the side away from the outer sheath tube body; The outer wall of the outer sheath is provided with an indicator scale.

5. The electronic hysteroscope with replaceable sheath as described in claim 1, characterized in that, The hysteroscope body also includes a tube; one end of the tube is connected to the side wall of the hysteroscope body, and the other end of the tube is connected to the communication cable.

6. The electronic hysteroscope with replaceable sheath as described in claim 5, characterized in that, The lens barrel includes a first lens barrel section and a second lens barrel section; one end of the first lens barrel section is perpendicularly disposed on the side wall of the lens body, the other end of the first lens barrel section is connected to one end of the second lens barrel section, and the other end of the second lens barrel section is connected to the communication cable; the angle formed by the first lens barrel section and the second lens barrel section is a right angle.

7. The electronic hysteroscope with replaceable sheath as described in claim 1, characterized in that, The mirror surface is also equipped with several light source modules.

8. The electronic hysteroscope with a replaceable sheath as described in any one of claims 1 to 7, characterized in that, It also includes adapters; The first connecting mechanism has an adapter connection part on the side away from the inner sheath body; The adapter includes an adapter body, a third connecting mechanism, and a sealing cap; The adapter body has a channel running through its opposite two sides. A sealing valve is built into one side of the adapter body, and one side of the adapter body is connected to the third connecting mechanism. The sealing cap is located on the other side of the adapter body. The third connecting mechanism is used to connect to the adapter connection part or the end of the lens body away from the lens tube.

9. The electronic hysteroscope with replaceable sheath as described in claim 8, characterized in that, The cross-sections of the endoscope tube and the inner sheath are both semi-circular, while the cross-section of the outer sheath is circular.

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