Hysteroscopic endoscope and system

Abstract

The present invention discloses a hysteroscopic endoscope and system, which comprises a handle, an inner tube, an insertion portion, and a traction structure, wherein the insertion portion comprises a head and an insertion structure, wherein the insertion structure comprises a first bending section, a second bending section, and a rigid section which are sequentially connected along the length direction, wherein the first bending section can be bent, and the head is provided at one end of the first bending section, and the two ends of the second bending section are respectively connected to the other end of the first bending section and one end of the rigid section, and the other end of the rigid section is connected to the handle; the second bending section is used to bend naturally according to the shape of the internal cavity of the human body; the outer peripheral surfaces of the first bending section and the second bending section are covered with a heat shrinkable film layer to form a tough tube sleeve in the first bending section and the second bending section, and the head or the insertion structure is provided with a plurality of liquid outlet holes on the circumferential side wall close to the head, and the space between the inner tube and the insertion portion is formed as a liquid outlet channel.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a hysteroscopic endoscope and a system. Background Art

[0002] Endoscope is a commonly used medical device, widely used in disease examination and surgical treatment in related departments. Endoscopes currently on the market are divided into rigid endoscopes and flexible endoscopes according to whether their insertion sections are bendable; and they can be divided into optical endoscopes and electronic endoscopes according to the imaging principle.

[0003] Existing rigid endoscopes are generally optical endoscopes, which are too heavy. During surgery, women have a poor sense of rigid endoscopes. Forcibly correcting the shape of the cervical canal to reach the uterine cavity requires an additional sheath to achieve continuous perfusion, and the sheath will cause great pain to the patient during the insertion process.

[0004] However, the soft endoscope is unstable and easily twisted during the insertion into the human body, and the lever arm is too far to be easily controlled, which will extend the operation time accordingly. Summary of the invention

[0005] Therefore, the present invention aims to solve the technical problems in the prior art that the rigid endoscope body is too heavy and has a poor physical feel, the soft endoscope is not easy to twist when inserted into the human body, the lever arm is too far and inconvenient to control, and the operation time will be correspondingly prolonged.

[0006] In order to solve the above technical problems, the present invention provides a hysteroscopic endoscope, which comprises:

[0007] handle;

[0008] Inner tube;

[0009] An insertion portion, wherein the insertion portion is sleeved outside the inner tube, the insertion portion includes a head and an insertion structure, the insertion structure includes a first bending section, a second bending section, and a rigid section connected in sequence along the length direction, the first bending section can be bent, the length of the first bending section is D1, 0<D1≤40mm, one end of the first bending section is provided with the head, the two ends of the second bending section are respectively connected to the other end of the first bending section and one end of the rigid section, and the other end of the rigid section is connected to the handle; the second bending section is used to bend naturally according to the shape of the internal cavity of the human body, the length of the second bending section is D2, 100mm≤D1+D2≤140mm; the outer peripheral surfaces of the first bending section and the second bending section are covered with a heat shrinkable film layer to form a tough tube sleeve in the first bending section and the second bending section, the side wall of the head and / or the circumferential side wall of the insertion structure close to the head is provided with at least one liquid outlet, the space between the inner tube and the insertion portion is formed as a liquid outlet channel, and the at least one liquid outlet is connected to the liquid outlet channel;

[0010] A traction structure, drivingly connected to the first bending section, and used to drive the first bending section to bend;

[0011] Wherein, the first curved section has a first curved position and a straight position, one end of the traction structure is arranged on the head, and the other end is arranged on the handle, and the traction structure has a pulling state and a releasing state; when the traction structure is in the pulling state, the first curved section bends from the straight position to the first curved position, and when the traction structure is in the releasing state, the first curved section resets from the first curved position to the straight position.

[0012] Preferably, in the hysteroscope, the first curved section, the second curved section and the rigid section are formed by cutting a whole metal tube.

[0013] Preferably, in the hysteroscopic endoscope,

[0014] The liquid outlet is provided in the first curved section; and / or

[0015] The liquid outlet is provided at an overlapping area between the first curved section and the head.

[0016] Preferably, in the hysteroscopic endoscope, the insertion portion further comprises a connecting tube, and the connecting tube is connected to the insertion structure and the head respectively;

[0017] Wherein, the liquid outlet is provided on the connecting pipe; and / or

[0018] The liquid outlet is provided at the overlapping area of ​​the connecting pipe and the first curved section; and / or

[0019] The liquid outlet is opened at the overlapping area of ​​the connecting pipe and the head.

[0020] Preferably, in the hysteroscopic endoscope, a liquid inlet channel is formed inside the inner tube, the head is connected to the inner tube and covers the front end of the liquid inlet channel, the head is provided with a liquid inlet hole corresponding to the liquid inlet channel, and the liquid inlet channel is connected to the liquid inlet hole.

[0021] Preferably, in the hysteroscopic endoscope, a mounting hole communicating with the liquid outlet channel is provided on the head, an imaging device is embedded in the mounting hole, the imaging device is connected to a wire accommodated in the liquid outlet channel, the wire is a waterproof structure, and the wire extends along the liquid outlet channel to the rear end of the insertion part.

[0022] Preferably, in the hysteroscopic endoscope, the handle comprises:

[0023] A joint is arranged on the handle, and the inner tube is fixedly connected to the joint.

[0024] Preferably, the hysteroscopic endoscope includes:

[0025] A collecting device and a drainage tube are arranged in the handle, and the collecting device is communicated with the liquid outlet channel and the drainage tube respectively.

[0026] Preferably, in the hysteroscope, the length D1 of the first curved section satisfies: 20 mm ≤ D1 ≤ 30 mm.

[0027] Preferably, in the hysteroscope, the length of the rigid section is D3, 120 mm ≤ D3 ≤ 150 mm.

[0028] Preferably, in the hysteroscopic endoscope, the second curved section includes a second tube body, the second tube body is provided with a plurality of rotation groove groups, and the plurality of rotation groove groups are arranged axially in a spiral and at intervals, each rotation groove group includes a plurality of rotation grooves, and the plurality of rotation grooves are arranged circumferentially at intervals to form the plurality of flexible curved portions.

[0029] Preferably, in the hysteroscopic endoscope, the first curved section comprises a first tube body, the first tube body comprises a plurality of first curved structures spaced apart along the axial direction, each of the first curved structures comprises a plurality of movable components distributed circumferentially, the plurality of movable components are an even number and are symmetrically arranged; wherein,

[0030] Each of the active components comprises:

[0031] A first rotating structure, rotatably arranged;

[0032] A first displacement guide structure is arranged circumferentially spaced from the first rotating structure and can move axially within a first preset length;

[0033] A first avoidance structure is provided between the first rotating structure and the first displacement guiding structure, and is used to provide an avoidance space when the first displacement guiding structure moves along the axial direction; and

[0034] A second avoidance structure is provided between two adjacent movable components distributed along the circumference of the first tube body.

[0035] In order to achieve the above object, the present invention also provides a hysteroscopic system, which includes the above endoscope.

[0036] The technical solution provided by the present invention has the following advantages:

[0037] The present invention does not need to forcibly correct the physiological shape and position of the uterine cavity. The second curved section can not only help entry during the insertion process, but also adapt to the shape of the cervix after the insertion is completed; the overall heat shrinkable film can adjust the toughness to make it easier to insert; by directly forming a liquid outlet channel between the inner tube and the insertion part, it is avoided to add an additional pipeline between the inner tube and the insertion part to form the liquid outlet channel, so that when the outer diameter of the insertion part is constant, the unit liquid output of the liquid outlet channel is effectively increased, the ability of liquid circulation is improved, and the bending of the insertion part will not cause a decrease in the liquid output, thereby avoiding affecting the operation; since the internal space of the insertion part is effectively utilized to form the liquid outlet channel, compared with the existing structure with the same unit liquid output, the outer diameter of the insertion part in the present invention can be made smaller to improve adaptability. At the same time, under the premise of reducing the outer diameter of the insertion part, different thicknesses of heat shrinkable film layers can be selected to further adjust the insertion part Toughness; in addition, the liquid outlet holes are arranged on the peripheral side of the insertion structure, which effectively increases the area where the liquid outlet holes can be opened, so that the number of liquid outlet holes that can be opened becomes more, and the probability of all liquid outlet holes being blocked is reduced, while ensuring the unit liquid output of the liquid outlet channel, and the increase in the number of liquid outlet holes makes the liquid outlet holes smaller, thereby preventing debris tissue from entering the liquid outlet channel from the liquid outlet holes, ensuring smooth conduction of the liquid outlet channel; by setting the insertion structure into a three-section type, the first bending section can realize active bending under the traction of the traction structure, and can realize flexible rotation, and the second bending section can be adaptively bent according to the shape of the cervix, which can effectively adapt to the shape of different female cervixes and reduce the stimulation and pain of the patient's cervix. At the same time, the second bending section has a certain toughness to ensure the overall operability, and the third section is the hard part of the rear section, which can provide sufficient support for the insertion structure, shorten the force arm, and facilitate the insertion of the insertion structure;

[0038] Furthermore, the present invention adopts a three-section type, wherein the first bending section can be actively bent and is relatively flexible, the second bending section is passively bent, and can adapt to the shape of different female cervixes, reduce the stimulation to the cervix, and at the same time has toughness to ensure the operability of the endoscope, and the rigid section is the hard part of the rear section, which can provide sufficient support for the endoscope, shorten the lever arm, and facilitate the insertion of the endoscope, thus retaining the advantages of rigid endoscopes and soft endoscopes, and overcoming their respective defects;

[0039] Furthermore, in the endoscope provided by the present invention, the second bending section can be passively bent. When it is necessary to switch the field of view, the first bending section is bent, and the second bending section will adaptively follow the shape of the inner wall of the uterus and bend and adjust. In this way, it does not require forced correction like a hard endoscope to achieve observation of the internal situation of the uterus. When the uterus is anterior, posterior or other complex situations, the second bending section will bend following the shape of the inner wall of the uterus when encountering the bending point, and there will be no situation where the bending point is pressed and the force cannot be transmitted to the first bending section. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A three-dimensional schematic diagram of an embodiment of an endoscope provided by the present invention;

[0042] Figure 2 for Figure 1 A partial schematic diagram of the structure in the middle;

[0043] Figure 3 for Figure 2 A partial schematic diagram of the structure in the middle;

[0044] Figure 4 for Figure 2 A three-dimensional schematic diagram of an embodiment of the first curved section;

[0045] Figure 5 for Figure 4 Schematic diagram of the cutting of the first curved section;

[0046] Figure 6 for Figure 5 Schematic diagram of the structure of the middle part;

[0047] Figure 7 for Figure 2 A three-dimensional schematic diagram of an embodiment of the second curved section;

[0048] Figure 8 for Figure 7 Schematic diagram of the cutting of the second curved section;

[0049] Fig. 9 for Figure 1 A schematic diagram of the exploded structure of another part;

[0050] Fig.10 It is a schematic diagram of the operation of a hard endoscope in a normal uterus in the prior art;

[0051] Fig.11 It is a schematic diagram of the operation of a rigid endoscope in an anterior uterus in the prior art;

[0052] Fig.12 It is a schematic diagram of the operation of a flexible endoscope in an anterior uterus in the prior art;

[0053] Fig.13 It is a schematic diagram of the operation of the endoscope of the present invention in the anterior uterus.

[0054] Description of reference numerals:

[0055]

[0056]

[0057] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0058] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0059] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0060] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0061] In the prior art, a hard endoscope is used as an example. Fig.10 The hard endoscope 110' includes a head end 111' and a rigid end 112' connected to the head end 111'. The head end 111' is bendable, while the rigid end 112' is rigid, that is, it cannot be bent. In addition, the viewing angle of the hard endoscope 110' is small (usually about 90°). For a normal uterus, when it is necessary to observe a certain part of the uterus (such as the fallopian tube), the hard endoscope 110' needs to be strongly dilated (such as Fig.10 The female experience is poor; and usually the female uterus is anterior or posterior, please refer to Fig.10 , Fig.10 Shown is a schematic diagram of the operation of the hard endoscope 110' in an anterior uterus. In order to smoothly enter or observe the interior of the uterus, the hard endoscope 110' requires strong uterine dilation, which is more obvious for anterior or posterior uterus. Women are more painful during the operation and have a poor experience. In addition, strong correction can easily cause vagus nerve stress.

[0062] For example, please refer to Fig.12The soft mirror 120' is flexible and bendable as a whole, but the soft mirror 120' usually needs to be designed to be longer, which is easy to cause the anterior uterus or the posterior uterus to bend at the uterine cavity. Fig.12 The diagram shows the operation of the soft mirror 120' in the anterior uterus. The soft mirror 120' is at the bending point A, where the force is concentrated. The soft mirror 120' will be pressed against A, and the tail end 121' of the soft mirror 120' is bent, and the force cannot be applied to the head of the soft mirror 120'.

[0063] This embodiment provides a hysteroscopic endoscope, wherein the hysteroscopic endoscope can be but is not limited to a hysteroscope. The implementation details of the hysteroscope of this embodiment are described below. The following content is only provided for the convenience of understanding and is not necessary for the implementation of this solution.

[0064] The present invention provides a hysteroscopic endoscope, please refer to Figures 1 to 4 The hysteroscopic endoscope 100 includes a handle 1, an inner tube 6, an insertion portion, and a traction structure 4. The insertion portion is sleeved outside the inner tube 6. The insertion portion includes a head 2 and an insertion structure 3. The insertion structure 3 includes a first bending section 31, a second bending section 32, and a rigid section 33 connected in sequence along the length direction. The first bending section 31 can be bent, and one end of the first bending section 31 is provided with the head 2. The two ends of the second bending section 32 are respectively connected to the other end of the first bending section 31 and one end of the rigid section 33. The other end of the rigid section 33 is connected to the handle 1. The second bending section 32 is used to bend naturally according to the shape of the internal cavity of the human body.

[0065] The outer circumference of the first curved section 31 and the second curved section 32 is covered with a heat shrink film layer. The heat shrink film layer can be used to coat the first curved section 31 and the second curved section 32 in sections, or the first curved section 31 and the second curved section 32 can be coated as a whole to form a tough tube sleeve in the first curved section 31 and the second curved section 32. The insertion part can also be coated as a whole, that is, the first curved section 31, the second curved section 32, and the rigid section 33 are covered with a heat shrink film layer as a whole. The material of the heat shrink film layer can be PEBAX and / or PET, and the thickness of the heat shrink film layer after heating and shrinking can be 0.1 (including 0.1) to 0.25 mm (including 0.25). The head 2 is provided with a liquid inlet 25 and an instrument channel. The head 2 and / or the insertion structure 3 are provided with at least one liquid outlet 21 near the circumferential side wall of the head 2. The space between the inner tube 6 and the insertion part is formed as a liquid outlet channel 24, and at least one liquid outlet 21 is connected to the liquid outlet channel 24. In one embodiment, the insertion portion further includes a connecting tube 34, which is connected to the insertion structure 3 and the head 2 respectively; wherein the liquid outlet 21 is provided on the connecting tube 34; and / or the liquid outlet 21 is provided at the overlapping area of ​​the connecting tube 34 and the first curved section 31 (see Figure 3 ); and / or the liquid outlet 21 is provided at the overlapping area of ​​the connecting tube 34 and the head 2 (not shown in the figure). In another embodiment not shown in the figure, the liquid outlet 21 is provided on the first curved section 31; and / or at the overlapping area of ​​the first curved section 31 and the head 2.

[0066] The traction structure 4 is drivingly connected to the first bending section 31, and is used to drive the first bending section 31 to bend. In this way, the first bending section 31 bends after the doctor pulls, and can be observed in multiple directions. The second bending section 32 can be adaptively bent according to the external shape (such as the cervix), and the rigid section 33 has a certain length to increase the lever arm and reduce the insertion force.

[0067] See also Fig.13 , the specific operations are as follows:

[0068] S1. The first curved section 31 enters the cervix and uterine cavity under the traction force of the operating traction structure 4 and the push of the rigid section 33.

[0069] S2. Subsequently, the second curved section 32 begins to enter the cervix from the cervical opening. The second curved section 32 can passively bend and naturally bend along the shape of the human body's internal cavity to adapt to the shape of the cervix, forming a curved shape, that is, it has a certain curvature and specifically bends adaptively along the shape of the cervix. Part of the curved section abuts against the side wall of the cervix to form a force fulcrum.

[0070] S3. When the second curved segment 32 is pushed into the uterine cavity by the rigid segment 33, the second curved segment 32 above the force fulcrum gradually enters the uterine cavity, and the second curved segment 32 below the force fulcrum (including the one located in the vagina) gradually enters the cervix and adapts to the shape of the cervix to form a new arc. The new arc abuts against the side wall of the cervix, and the abutment position is still located at the original force fulcrum. Therefore, during the entire pushing process, the position of the force fulcrum remains basically unchanged, and the power arm formed between the rigid segment 33 and the force fulcrum gradually decreases, so the pushing force (power) will become larger and larger. The force fulcrum remains unchanged to ensure the uniform change of the pushing force, and the operator can accurately control and change the pushing force. If the force fulcrum is always changing, the operator cannot accurately control the force of the pushing bend, causing discomfort or tissue damage to the patient;

[0071] S4: After the pushing is completed, the vast majority of the second curved section 32 is located in the cervix, and is adaptively bent according to the cervical shape of different patients to form different shapes, so that no discomfort is caused to women;

[0072] S5: The lower end of the second curved section 32 extends out of the cervical os and is located in the vagina to prevent the junction of the second curved section 32 and the rigid section 33 from causing damage to the cervical os due to discontinuity; similarly, the upper end of the second curved section 32 is located in the uterine cavity to prevent damage to the muscles at the other end of the cervix.

[0073] In addition, the shape of the liquid outlet hole 21 can be circular, elliptical, or prismatic, and no specific restrictions are made here. In addition, the size and number of the liquid outlet hole 21 can be adjusted as needed to prevent solid objects from entering the interior of the hysteroscopic endoscope 100 while ensuring that the liquid enters. In this embodiment, when the liquid outlet hole 21 is circular, the size of the liquid outlet hole 21 is ≥1mm. When the liquid in the uterine cavity needs to be sucked out, the liquid enters from the liquid outlet hole 21 and enters the internal channel and then is discharged. Specifically, it can flow from the internal channel to the rear end of the hysteroscopic endoscope 100, and then be collected and discharged by the collection device 16 in the handle 1. In this way, by using the internal channel to discharge water, the water output is greatly increased, and the ability of liquid circulation is improved. When the hysteroscopic endoscope 100 is bent, the water output is not affected or the impact is very small or even negligible. In addition, it is saved to specially set up a water outlet pipe, and the space inside the hysteroscopic endoscope 100 except for the components such as wires is used as the water outlet channel, which reduces the outer diameter of the entire mirror body of the hysteroscopic endoscope 100, and the hysteroscopic endoscope 100 can be made thinner. Further, the liquid outlet hole 21 can be made smaller (the number of liquid outlet holes 21 can be increased to ensure the water flow rate), which can prevent debris from entering the pipeline and causing blockage; or after smaller debris enters the interior of the hysteroscopic endoscope 100, it will not cause blockage due to the large internal space; further, the liquid outlet hole 21 is set on the side, and the number of liquid outlet holes 21 is not limited; the liquid outlet hole 21 is set on the side, which can reduce the diameter of the hysteroscopic endoscope 100, and then, there are more choices for the thickness of the heat shrink film, that is, different thicknesses of heat shrink films can be selected to adjust the performance of the three-stage hysteroscopic endoscope 100. Further, the hysteroscopic endoscope 100 also includes a water inlet pipe; the water inlet pipe is accommodated in the internal channel and extends from the head 2 to the rigid section 33, and the liquid enters and is discharged into the uterine cavity from the water inlet pipe. Further, the head 2 and the first curved section 31 have an overlapping area, and the liquid outlet hole 21 is arranged in the overlapping area. When the liquid outlet hole 21 is opened at the overlapped area, one hole may be opened in the head 2, and one hole may be opened at the corresponding position of the first curved section 31, and the two holes at least partially overlap to form the liquid outlet hole 21. The number of the liquid outlet holes 21 is inversely proportional to the size of the liquid outlet holes 21, so as to prevent solid matter from entering the internal channel from the liquid outlet hole 21 while ensuring the liquid flow rate.

[0074] Furthermore, the insertion structure 3 is cut by bending a stainless steel tube, and the relationship between the bendability and toughness of the entire section can be adjusted by heat shrinking the outer surface of the first curved section 31 and the second curved section 32 as a whole. The three-section hysteroscope curved section requires a very large bending angle and passive bending performance (because the shape of the vagina, cervix, and uterine cavity is a large curve), and at the same time needs to have a strong toughness and force conductivity (it needs to be able to be inserted into the uterine cavity under the premise of a large curve). After the stainless steel curved section is cut, there is a gap between each curved section (the first curved section 31 and the second curved section 32) and it is easy to deform under force, thereby affecting the conductivity and bendability of force. The above problem can be effectively solved by heat shrinking the outer surface of the first curved section 31 and the second curved section 32 as a whole. By tightly wrapping the first bending section 31 and the second bending section 32 with the overall heat shrinkable film, the toughness of the heat shrinkable film itself can be enhanced to the whole, so that it has both large-angle bending performance and very strong toughness and force conductivity. In addition, the heat shrinkable film tightly wraps the first bending section 31 and the second bending section 32 to form a whole. When force is applied to them, displacement between the bending sections is avoided, thereby greatly reducing the loss of force. Secondly, the overall heat shrinkable film solution is simple to operate, low cost and high production efficiency.

[0075] Further, since the conventional length of the uterus is 70 mm and the width is 40 mm, the bending radius of the first curved section 31 is preferably less than 20 mm, and the first curved section 31 can be actively bent at 130° to avoid damaging the uterine cavity and facilitate observation of the entire uterine cavity. The length of the first curved section 31 is D1, the length of the second curved section 32 is D2, and the length of the rigid section 33 is D3. 0<D1≤40mm, preferably, D1 is 20mm-30mm, so that the length of the first curved section 31 can be relatively small, meeting the bending angle and strength requirements. Since the length of the cervical canal is about 30-35mm, the total length from the cervical ostium to the bottom of the uterine cavity is about 100mm, although the internal tissue of the cervical ostium is strong, the surface tissue is relatively soft, and the connection between the second curved section 32 and the rigid section 33 will cause damage to the cervical ostium during operation. To avoid damage, in this embodiment, 100mm≤D1+D2≤140mm, D1+D2 is 110mm, 120mm, or 130mm. When the insertion structure 3 is inserted into place, the rigid section 33 is located in the human vagina, which is relatively straight and spacious. Therefore, there is no need to consider the flexibility of the rigid section 33. The length of the vagina is generally about 100 mm, and the handle 1 and the vaginal opening need a certain distance so that they cannot be completely attached. Therefore, 120 mm ≤ D3 ≤ 150 mm. Preferably, D3 is 120 mm, 130 mm, or 140 mm.

[0076] The second bending section 32 includes a second tube body, and the second tube body is provided with a plurality of rotating groove groups, and the plurality of rotating groove groups are arranged in an axial spiral and at intervals, so that universal bending can be achieved. Specifically, each rotating groove group may include a plurality of rotating grooves 321 arranged circumferentially and at intervals, and the number of rotating grooves 321 included in each rotating groove group is specifically determined according to the diameter of the second tube body. In this embodiment, each rotating groove group includes two rotating grooves 321 arranged circumferentially. The circumferential spacing of the rotating grooves 321 of two adjacent rotating groove groups along the axial direction is L6. More specifically, each rotating groove 321 has a first end 3211 and a second end 3212 along the circumferential direction, and the rotating groove 321 extends from the first end 3211 to the second end 3212. The circumferential spacing of the rotating grooves 321 of two adjacent rotating groove groups along the axial direction is the spacing between the first end 3211 or the second end 3212 of the rotating grooves 321 of two adjacent rotating groove groups along the axial direction along the circumferential direction of the second tube body. In this embodiment, L6 is 0.6 mm.

[0077] The first curved section 31 has a first curved position and a straight position, one end of the traction structure 4 is provided at the head 2, and the other end is provided at the handle 1, and the traction structure 4 has a pulling state and a loosening state; wherein, when the traction structure 4 is in the pulling state, the first curved section 31 is bent from the straight position to the first curved position, and when the traction structure 4 is in the loosening state, the first curved section 31 is reset from the first curved position to the straight position, and the second curved section 32 is used to bend following the shape of the inner wall of the uterus.

[0078] During operation, the insertion structure 3 is inserted into the female's uterus. Due to the limited space in the uterus, the first curved section 31 can be flexibly rotated under the traction of the traction structure 4. During hysteroscopy, the second curved section 32 is located at the cervix. The second curved section 32 can be adaptively bent according to the shape of the cervix. Through passive bending, it can adapt to the shape of the cervix of different women, reduce stimulation to the cervix, and reduce the pain of the patient without the problems of hard or soft mirrors in the prior art. At the same time, the second curved section 32 also has toughness to ensure overall operability. The rigid section 33 is in the hard part of the rear section of the insertion structure 3, which provides sufficient support for the insertion structure 3 and shortens the lever arm, making it easier to insert the insertion structure 3.

[0079] The second curved section 32 of the hysteroscope 100 provided by the present invention can be passively bent. When it is necessary to switch the field of view, the first curved section 31 is bent, and the second curved section 32 will bend and adjust adaptively to follow the shape of the inner wall of the uterus. In this way, it does not require forced correction like the hard scope 110' to achieve observation of the internal situation of the uterus; when the uterus is anterior, posterior or other complex situations, the second curved section 32 will bend following the shape of the inner wall of the uterus when encountering the bending point, and there will be no situation where the bending point is pressed and the force cannot be transmitted to the first curved section 31.

[0080] The present invention arranges the insertion structure 3 into three sections. The first bending section 31 can be actively bent under the traction of the traction structure 4 and can be flexibly rotated. The second bending section 32 passively bends following the shape of the inner wall of the cervix after entering the cervix. This can effectively adapt to the different shapes of female cervixes and reduce the stimulation and pain of the patient's cervix. At the same time, the second bending section 32 has a certain toughness to ensure the overall operability. The third section is the hard part of the rear section, which can provide sufficient support for the insertion structure 3, shorten the lever arm, and facilitate the insertion of the insertion structure 3.

[0081] Specifically, see Figures 4 to 6 The first bending section 31 includes a first tube body, the first bending section 31 includes a first tube body, the first tube body includes a plurality of first bending structures distributed along the axial direction, each of the first bending structures includes a plurality of movable components 31a distributed circumferentially, the plurality of movable components 31a are an even number and are symmetrically arranged, each movable component 31a includes a first rotating structure 311, a first displacement guiding structure 312, and a first avoidance structure 313, the first rotating structure 311 is rotatably arranged, the first displacement guiding structure 312 and the first rotating structure 311 are circumferentially spaced and can be moved axially within a first preset length, the first avoidance structure 313 is arranged between the first rotating structure 311 and the first displacement guiding structure, and is used to provide an avoidance space when the first displacement guiding structure 312 moves axially; a second avoidance structure 314 is provided between two adjacent movable components 31a distributed along the circumference of the first tube body.

[0082] Furthermore, in this embodiment, the first rotating structure 311 includes a rotating groove 3111 and a rotating portion 3112 . The rotating groove 3111 is opened in the first tube body. The rotating groove 3111 is arranged in an arc shape. The rotating portion 3112 is accommodated in the rotating groove 3111 and can be rotatably arranged relative to the rotating groove 3111 .

[0083] Furthermore, in this embodiment, the first displacement guide structure 312 includes a slide groove 3121 and a sliding portion 3122. The slide groove 3121 is opened in the first tube body and extends along the axial direction. The sliding portion 3122 is accommodated in the slide groove 3121 and can move along the axial direction.

[0084] Specifically, the following is a detailed description taking an example where each of the first bending structures includes two movable components 31 a.

[0085] More specifically, the rotating groove 3111 is a circular arc groove, and the rotating part 3112 is a circular arc convex part provided on the first tube body, wherein the circular arc groove and the circular arc convex part are both cut and formed on the first tube body, and the circular arc groove and the circular arc convex part are distributed along the axial direction during cutting, and the circular arc convex part is placed in the circular arc groove after cutting so as to be rotatable. The circular arc groove includes a first circular arc groove 3111a and a second circular arc groove 3111b, and the circular arc convex part includes a first circular arc convex part 3112a and a second circular arc convex part 3112b. During installation, the first circular arc convex part 3112a is placed in the first circular arc groove 3111a to form a first rotating body, and the second circular arc convex part 3112b is placed in the second circular arc groove 3111b to form a second rotating body. The first curved section 31 includes a first rotating body, a first avoidance structure 313, a first displacement guide structure 312, a second avoidance structure 314, a second rotating body, a first avoidance structure 313, a first displacement guide structure 312, and a second avoidance structure 314 which are sequentially connected along the circumferential direction.

[0086] The slide groove 3121 is an elongated slide groove, which extends in the axial direction, and the sliding part 3122 is an elongated protruding part, wherein the elongated slide groove and the elongated protruding part are cut and formed on the first tube body, and the elongated slide groove and the elongated protruding part are arranged in the axial direction. After cutting and forming, the elongated protruding part is accommodated in the elongated slide groove so that the elongated protruding part can slide in the length direction of the elongated slide groove. The elongated slide groove includes a first elongated slide groove 3121a and a second elongated slide groove 3121b, and the elongated protruding part includes a first elongated protruding part 3122a and a second elongated protruding part 3122b. During installation, the first elongated protrusion 3122a is accommodated in the first elongated slide groove 3121a to form a first sliding body, and the second elongated protrusion 3122b is accommodated in the second elongated slide groove 3121b to form a second sliding body. In this way, the first curved section 31 includes a first rotating body, a first avoidance structure 313, a first sliding body, a second avoidance structure 314, a second rotating body, a first avoidance structure 313, a second sliding body, and a second avoidance structure 314 connected in sequence along the circumferential direction.

[0087] In this embodiment, both the first avoidance structure 313 and the second avoidance structure 314 are avoidance grooves, that is, the first curved section 31 includes a first rotating body, a first avoidance groove 3131, a first sliding body, a second avoidance groove 3141, a second rotating body, a third avoidance groove 3132, a second sliding body, and a fourth avoidance groove 3142 connected in sequence along the circumferential direction. The first rotating body and the second rotating body are symmetrically arranged on both sides of the first tube body, so that the tube body can be bent in the first direction and in the direction opposite to the first direction.

[0088] In this embodiment, the avoidance groove has a first connection section 3151 connected to the first sliding body / second sliding body and a second connection section 3152 connected to the first rotating body / second rotating body along the circumference of the first tube body, wherein the first connection section 3151 and the second connection section 3152 are arranged to be gradually reduced, and the avoidance groove can be a triangle, a trapezoid or other shapes without specific limitation. The following is specifically described by taking the first sliding body as an example. Please refer to Figure 5 and Figure 6The first elongated slide groove 3121a has a first top 3121a1 and a first bottom 3121a2 respectively located at both ends along the axial direction, the first elongated protrusion 3122a has a second top 3122a1 and a second bottom 3122a2 respectively located at both ends along the axial direction, and the first avoidance groove 3131 and the second avoidance groove 3141 both include a first edge 3161 connected to the first elongated slide groove 3121a, and a second edge 3162 connected to the first elongated protrusion 3122a. When the first curved section 31 is in a straight position, the axial interval between the first top 3121a1 and the second top 3122a1 is L1, the axial interval between the first bottom 3121a2 and the second bottom 3122a2 is L2, and the axial interval between the second top 3122a1 and the first bottom 3121a2 is L3; when the first curved section 31 is in a curved position, due to different curved directions, there may be two situations: (1) the second top 3122a1 moves L1 and fits with the first top 3121a1 (i.e., the first elongated protrusion 3121a2 moves L1 and fits with the first top 3121a1). 3122a moves forward, at which time the second side 3162 moves toward the direction close to the first side 3161), (2) the second top 3122a1 moves L4 in the direction away from the first top 3121a1, at which time the second top 3122a1 cannot exceed the setting of the first bottom 3121a2 (i.e. the first elongated protrusion 3122a moves backward, at which time the second side 3162 moves toward the direction away from the first side 3161), so as to avoid the first elongated protrusion 3122a from falling off from the first elongated slide groove 3121a and being unable to return to its original position. More specifically, when the first curved section 31 bends from the straight position to the curved position, the first elongated protrusion 3122a moves forward or backward, assuming that the forward position is L1, in order to avoid the second side 3162 and the first side 3161 from colliding when moving forward, L2>L1. When the first elongated protrusion 3122a moves backward, the displacement L4≤L3, so that the second top 3122a1 can be prevented from falling out of the first elongated chute 3121a (i.e., moving beyond the first bottom 3121a2) when the first elongated protrusion 3122a moves backward, resulting in the inability to return to its original position. In this embodiment, L2 is 0.5mm, L1 is 0.42mm, and L3 is 0.6mm. The settings of L1, L2, and L3 are also determined according to the diameter of the first tube body, so no specific restrictions are made here. Further, the length of the first curved section 31 is 40mm. Since the uterus is conventionally 70mm long and 40mm wide, the bending radius of the first curved section 31 is less than 20mm, and the first curved section 31 can be actively bent up / down 130° to achieve full uterine cavity observation.

[0089] The structure of the second sliding body is similar to that of the first sliding body, and can refer to the above-mentioned settings and will not be described in detail here. However, it should be noted that when the first bending section 31 bends toward the first direction, assuming that the first elongated protrusion 3122a in the first sliding body moves forward and the second elongated protrusion 3122b in the second sliding body moves backward, then when the first bending section 31 bends in a direction opposite to the first direction, the first elongated protrusion 3122a in the first sliding body moves backward and the second elongated protrusion 3122b in the second sliding body moves forward.

[0090] When the traction structure 4 is used for traction, the first sliding body is pulled to slide forward and the second sliding body is pulled to slide backward to drive the first rotating body and the second rotating body to rotate to achieve bending in the first direction, or the second sliding body is pulled to slide forward and the first sliding body is pulled backward to drive the first rotating body and the second rotating body to rotate to achieve bending in the direction opposite to the first direction. Specifically, the multiple first bending structures include multiple moving groups, each moving group includes multiple first displacement guide structures 312 arranged along the axial direction, the traction structure 4 includes multiple traction wire groups, the multiple traction wire groups match the multiple moving groups, one traction group extends along the extension direction of one of the moving groups, and a fixed structure is provided between two axially adjacent first displacement guide structures 312 in the moving group, one end of the traction group is fixed to the head 2, the other end of the traction group is provided on the handle 1, and the middle part of the traction group is provided on the fixed structure and can move in the fixed structure. In this embodiment, a plurality of first sliding bodies or second sliding bodies arranged along the axial direction of the first tube body form the moving group. A fixed structure is provided between two adjacent first sliding bodies along the axial direction. A fixed structure may be provided between every two adjacent sliding parts 3122, or a fixed structure may be provided between two partially adjacent sliding parts 3122. There are multiple fixed structures, and the multiple fixed structures are evenly spaced along the axial direction of the first tube body. The fixed structure may be, but is not limited to, a buckle structure. Specifically, the buckle structure includes a slot 317 provided in the first tube body, and a buckle installed on the slot 317. The traction wire group passes through the buckles of the multiple fixed structures in sequence and is connected to the handle 1. Each traction wire group may include one or more traction wires. Please refer to Fig. 9When each of the first bending structures includes two movable components 31a, there are two traction wire groups, including a first traction wire group 41 and a second traction wire group 42 respectively. The two first traction wire groups 41 and the second traction wire group 42 are respectively used to pull the first sliding body and the second sliding body. For example, when the first bending section 31 bends in a first direction, the first traction wire group 41 pulls the first sliding body to slide forward, and the second traction wire group 42 pulls the second sliding body to slide backward, and drives the first rotating body and the second rotating body to rotate to achieve bending in the first direction; when the first bending section 31 bends in a direction opposite to the first direction, the first traction wire group 41 pulls the first sliding body to slide backward, and the second traction wire group 42 pulls the second sliding body to slide forward, and drives the first rotating body and the second rotating body to rotate to achieve bending in the second direction.

[0091] In this embodiment, the interval between the fixed structure and the adjacent first sliding body / second sliding body in the axial direction is L5, and the fixed structure is arranged in the middle between two axially adjacent first sliding bodies / second sliding bodies, so that a smaller bending radius can be formed and the root strength of the first sliding body / second sliding body can be higher. In this embodiment, L5≥0.5mm.

[0092] See also Fig. 9 The handle 1 includes a handle shell 11 and a traction wire fixing structure. The handle shell 11 is fixedly arranged with the rigid section 33. The traction wire fixing structure is rotatably arranged on the handle shell 11. The other end of the traction group is arranged on the traction wire fixing structure. The traction wire fixing structure has a pulling position and a releasing position in the rotation direction; wherein, when the traction wire fixing structure rotates from the releasing position to the pulling position, the traction group drives the first bending section 31 to bend from the straight position to the first bending position; when the traction wire fixing structure rotates from the pulling position to the releasing position, the traction group is released and the first bending section 31 is reset from the first bending position to the straight position.

[0093] Specifically, the case where each of the first bending structures includes two movable components 31a is used as an example for explanation. The first bending section 31 includes a first rotating body, a first avoidance groove 3131, a first sliding body, a second avoidance groove 3141, a second rotating body, a third avoidance groove 3132, a second sliding body, and a fourth avoidance groove 3142 connected in sequence along the circumferential direction. The first bending section 31 can be bent in a first direction and in a direction opposite to the first direction. There are two traction wire groups, including a first traction wire group 41 and a second traction wire group 42, respectively. The traction wire fixing structure includes a turntable 12 rotatably arranged on the handle shell 11, and a handle 13 rotatably fixed to the turntable 12. The first traction wire group 41 is wound on the turntable 12 in the second direction, and the second traction wire group 42 is wound on the turntable 12 in the opposite direction to the winding direction of the first traction wire group 41. The turntable 12 can rotate forward in the second direction or reverse in the direction opposite to the second direction. The handle shell 11 includes an upper handle shell 111 and a lower handle shell 112 which are spliced ​​together. The upper handle shell 111 and the lower handle shell 112 are spliced ​​together to form an installation cavity 113, and the installation cavity 113 contains a turntable 12 and the like. A yield structure 14 is also provided at the connection between the upper handle shell 111 and the lower handle shell 112. The yield structure 14 is provided with a yield hole 141, and the yield hole 141 is used for the traction wire group to pass through. Preferably, a capillary is provided on the traction wire group, and the capillary is installed in the yield hole 141, so that a certain support force can be provided to the traction wire group. One end of the handle 13 is fixed to the turntable 12, and the other end extends out of the installation cavity 113, which can be convenient for the operator to hold and operate.

[0094] See also Figure 6 and Figure 7 The rigid section 33 is a third tube body, and the material of the third tube body is stainless steel. The rigid section 33 provides sufficient support for the insertion structure 3, shortens the lever arm, and facilitates the insertion of the insertion structure 3. In this embodiment, the length of the rigid section 33 is between 120-150 mm. When fully inserted, the rigid section 33 is in the human vagina. The vagina is relatively straight and spacious, so there is no need to consider the flexibility of the rigid section 33. The length of the vagina is generally about 100 mm. The handle 1 and the vaginal opening need a certain distance and cannot be completely attached, so the length of the rigid section 33 is set between 120-150 mm.

[0095] In this embodiment, the first tube body, the second tube body, and the third tube body are three sections on the same tube body, rather than three separate tube bodies. That is, cutting is performed on a tube body (laser integral cutting in this embodiment) to form the first curved section 31, the second curved section 32, and the rigid section 33. The tube body can be a metal tube, and the metal tube can be a medical material, preferably a medical nickel-titanium alloy. The first tube body, the second tube body, and the third tube body are formed by cutting a single tube body, which has a simple process, low cost, and high assembly efficiency, and avoids the traditional soft hysteroscopic endoscope 100, which connects different functional sections by laser welding or glue. Compared with the traditional soft hysteroscopic endoscope 100, the present invention has a simple process, low cost, and high assembly efficiency.

[0096] See also Figure 3 and Fig. 9 , a joint 15 is provided on the handle 1, and one end of the inner tube 6 is fixedly connected to the joint 15. A liquid inlet channel 23 is formed inside the inner tube 6, and the head 2 is fixedly connected to the other end of the inner tube 6 and covers the front end of the liquid inlet channel 23. A liquid inlet hole 25 is provided on the head 2, and the liquid inlet hole 25 corresponds to the liquid inlet channel 23, and the liquid inlet channel 23 is connected to the liquid inlet hole 25. The material of the inner tube 6 can be a flexible material, and can also be a combination of a flexible material and a rigid material. For example, the inner tube 6 at the head 2, the connecting tube 34, the first curved section 31 and the second curved section 32 is a flexible material, and the rigid section 33 and the inner tube 6 at the handle 1 are a rigid material. The flexible material and the rigid material can be fixed by sleeve connection, gluing, heat shrink tubing, etc. In addition to transporting liquid, the liquid inlet channel 23 of the inner tube 6 can also be inserted into other surgical instruments through the joint 15 from the liquid inlet channel 23 of the inner tube 6 for diagnosis and treatment of diseases.

[0097] The head 2 is also provided with a mounting hole 22 which is in communication with the liquid outlet channel 24. An imaging device (not shown in the figure) is embedded in the mounting hole 22. The imaging device is connected to a wire (not shown in the figure) accommodated in the liquid outlet channel 24. The wire is a waterproof structure and extends along the liquid outlet channel 24 to the rear end of the insertion portion.

[0098] refer to Fig. 9 A collecting device 16 and a drainage tube 5 are also provided in the handle 1. The collecting device 16 can be a cavity structure that can buffer liquid. The collecting device 16 is communicated with the liquid outlet channel 24 and the drainage tube 5 respectively, so as to collect the liquid discharged from the liquid outlet channel 24 and discharge it to other devices outside the hysteroscopic endoscope 100 through the drainage tube 5. Preferably, a drainage joint 15 (not shown in the figure) can be provided in the handle 1, and the drainage joint 15 is fixedly connected to the drainage tube 5, so that the liquid discharged from the hysteroscopic endoscope 100 can be drained and / or collected after being fixedly connected to the hysteroscopic endoscope 100 through other equipment.

[0099] In order to achieve the above object, the present invention further provides a hysteroscopic endoscope 100 system, which includes the above hysteroscopic endoscope 100. An embodiment of the hysteroscopic system includes an embodiment of the above hysteroscopic endoscope 100.

[0100] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, ordinary technicians in this field can make other different forms of changes or modifications without creative work, which should fall within the scope of protection of the present invention.

Claims

1. A hysteroscopic endoscope, characterized in that: include: handle; Inner tube; The insertion part is sleeved outside the inner tube, the insertion part includes a head and an insertion structure, the insertion structure includes a first curved section, a second curved section, and a rigid section connected in sequence along the length direction, the first curved section can be bent, the length of the first curved section is D1, 0<D1≤40mm, one end of the first curved section is provided with the head, the two ends of the second curved section are respectively connected to the other end of the first curved section and one end of the rigid section, and the other end of the rigid section is connected to the handle; the second curved section is used to bend naturally according to the shape of the internal cavity of the human body, and the length of the second curved section is D2, 100mm≤D1+D2 ≤140mm; the outer circumferential surfaces of the first curved section and the second curved section are covered with a heat shrinkable film layer to form a tough tube sleeve in the first curved section and the second curved section, the side wall of the head and / or the insertion structure is provided with at least one liquid outlet near the circumferential side wall of the head, the space between the inner tube and the insertion portion is formed as a liquid outlet channel, and the at least one liquid outlet is connected to the liquid outlet channel; the second curved section includes a second tube body, the second tube body is provided with a plurality of rotating groove groups, and the plurality of rotating groove groups are arranged in an axial spiral and at intervals, each rotating groove group includes a plurality of rotating grooves, and the plurality of rotating grooves are arranged at intervals along the circumferential direction to form a plurality of flexible curved portions; A traction structure, drivingly connected to the first bending section, and used to drive the first bending section to bend; Wherein, the first curved section has a first curved position and a straight position, one end of the traction structure is arranged on the head, and the other end is arranged on the handle, and the traction structure has a pulling state and a releasing state; when the traction structure is in the pulling state, the first curved section bends from the straight position to the first curved position, and when the traction structure is in the releasing state, the first curved section resets from the first curved position to the straight position.

2. The hysteroendoscope according to claim 1, characterized in that: The first curved section, the second curved section and the rigid section are formed by cutting a whole metal pipe.

3. The hysteroendoscope according to claim 1, characterized in that: The liquid outlet is provided in the first curved section; and / or The liquid outlet is provided at an overlapping area between the first curved section and the head.

4. The hysteroendoscope according to claim 1, characterized in that: The insertion part further includes a connecting tube, and the connecting tube is connected to the insertion structure and the head part respectively; Wherein, the liquid outlet is provided on the connecting pipe; and / or The liquid outlet is provided at the overlapping area of ​​the connecting pipe and the first curved section; and / or The liquid outlet is opened at the overlapping area of ​​the connecting pipe and the head.

5. The hysteroendoscope according to claim 3 or 4, characterized in that: A liquid inlet channel is formed inside the inner tube, the head is connected to the inner tube and covers the front end of the liquid inlet channel, a liquid inlet hole is opened in the head corresponding to the liquid inlet channel, and the liquid inlet channel is connected to the liquid inlet hole.

6. The hysteroendoscope according to claim 1, characterized in that: The head is provided with a mounting hole communicating with the liquid outlet channel, an imaging device is embedded in the mounting hole, the imaging device is connected to a wire accommodated in the liquid outlet channel, the wire is a waterproof structure, and the wire extends along the liquid outlet channel to the rear end of the insertion part.

7. The hysteroendoscope according to claim 1, characterized in that: The handle comprises: A joint is arranged on the handle, and the inner tube is fixedly connected to the joint.

8. The hysteroendoscope according to claim 1, characterized in that: include: A collecting device and a drainage tube are arranged in the handle, and the collecting device is communicated with the liquid outlet channel and the drainage tube respectively.

9. The hysteroendoscope according to claim 1, characterized in that: The length D1 of the first curved section satisfies: 20 mm ≤ D1 ≤ 30 mm.

10. The hysteroendoscope according to claim 1, characterized in that: The length of the rigid section is D3, 120 mm ≤ D3 ≤ 150 mm.

11. The hysteroendoscope according to claim 1, characterized in that: The first curved section includes a first tube body, the first tube body includes a plurality of first curved structures spaced apart along the axial direction, each of the first curved structures includes a plurality of movable components distributed circumferentially, the plurality of movable components are an even number and are symmetrically arranged; wherein, Each of the active components comprises: A first rotating structure, rotatably arranged; A first displacement guide structure is arranged circumferentially spaced from the first rotating structure and can move axially within a first preset length; A first avoidance structure is provided between the first rotating structure and the first displacement guiding structure, and is used to provide an avoidance space when the first displacement guiding structure moves along the axial direction; and A second avoidance structure is provided between two adjacent movable components distributed along the circumference of the first tube body.

12. A hysteroscopic system, characterized in that: Comprising a hysteroscopic endoscope as described in any one of claims 1 to 11.

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