Hysteroscope

Abstract

This invention discloses a hysteroscope, including a handheld part and an insertion part connected to the handheld part. The insertion part includes an insertion tube, which comprises an insertion tube body, a positioning plate, an elastic element, and a lens assembly disposed on the insertion tube body. An instrument channel extending along the axial direction of the insertion tube is formed inside the insertion tube. The instrument channel includes a first tube segment and a second tube segment that communicate with each other. The first tube segment is formed within the insertion tube body, and the second tube segment is formed jointly by the insertion tube body and the positioning plate. The lens assembly is at least partially located in the radial direction of the second tube segment. The proximal end of the positioning plate is rotatably connected to the insertion tube body, and the distal end of the positioning plate is connected to the insertion tube body via the elastic element. This invention is applicable to various types of surgical instruments, reduces surgical costs, simplifies the surgical procedure, and avoids the risk of secondary injury to the patient.

Description

Technical Field

[0001] This invention relates to the field of hysteroscopy, and particularly to a hysteroscope. Background Technology

[0002] Hysteroscopy is used for examination and treatment within the uterine cavity. During use, the hysteroscope's lens provides magnified observation of areas within the uterine cavity. Surgical instruments can be used to perform surgical procedures within the uterine cavity through the hysteroscope.

[0003] A hysteroscope includes an insertion section, which includes a cannula that extends into the uterine cavity. The cannula has an instrument channel through which surgical instruments pass to the uterine cavity for surgical procedures. Because a camera and light source are located at the distal end of the cannula, the radial space of the instrument channel at that distal end is narrowed. Therefore, to ensure successful extension of the surgical instruments from the distal end of the instrument channel, current techniques generally increase the outer diameter of the cannula to increase the radial space of the instrument channel at the distal end. However, increasing the outer diameter of the cannula increases patient discomfort. Furthermore, due to the wide variety of surgical instruments available, doctors need to select the appropriate instrument based on the cause of the lesion. If a smaller instrument is chosen, it is prone to movement in the larger radial space of the instrument channel, making it difficult to accurately locate the lesion. Therefore, to accommodate different types of surgical instruments, multiple cannulas with different inner diameters are used. Since some lesions require different types of surgical instruments, the hysteroscope must be changed to a cannula with the corresponding inner diameter, increasing surgical costs and complicating the surgical procedure. Moreover, this requires reinserting the cannula into the uterine cavity, posing a risk of secondary injury to the patient. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a hysteroscope that is compatible with various types of surgical instruments, reducing surgical costs, simplifying the surgical procedure, and avoiding the risk of secondary harm to patients.

[0005] This invention is achieved through the following technical solution:

[0006] A hysteroscope includes a handheld part and an insertion part connected to the handheld part. The insertion part includes an insertion tube, which includes an insertion tube body, a positioning plate, an elastic element, and a lens assembly disposed on the insertion tube body.

[0007] The insertion tube has an instrument channel extending along the axial direction of the insertion tube. The instrument channel includes a first tube segment and a second tube segment that are interconnected. The first tube segment is formed in the insertion tube body, and the second tube segment is formed by the insertion tube body and the positioning plate. The lens assembly is at least partially located in the radial direction of the second tube segment.

[0008] The proximal end of the positioning plate is rotatably connected to the cannula body, and the distal end of the positioning plate is connected to the cannula body through the elastic element.

[0009] The positioning plate has an open state and a closed state. When the surgical instrument moves from the first tube segment to the second tube segment, the positioning plate switches from the closed state to the open state under the pressure of the head of the surgical instrument to increase the radial cross-sectional area of ​​the second tube segment. When the head of the surgical instrument comes out of the second tube segment, the positioning plate switches from the open state to the closed state under the elastic force of the elastic element. At this time, the positioning plate abuts against the rod of the surgical instrument.

[0010] Furthermore, a fixing hole is formed on the cannula body, and a first rotating shaft is integrally formed at the proximal end of the positioning plate. The first rotating shaft is engaged with the fixing hole, and the positioning plate can rotate around the first rotating shaft.

[0011] Furthermore, the proximal end of the positioning plate is spaced apart from the cannula body.

[0012] Furthermore, the elastic element is semi-circular, and the middle section of the elastic element is wound around the insertion tube body, and both ends of the elastic element are fixedly connected to the far end of the positioning plate.

[0013] Furthermore, a groove is formed on the cannula body, and the middle section of the elastic member is at least partially located in the groove.

[0014] Furthermore, a pull rope is installed inside the wall of the cannula body. One end of the pull rope is fixedly connected to the proximal end of the positioning plate. When it is necessary to remove the surgical instrument, the operator can drive the positioning plate from the closed state to the open state by pulling the other end of the pull rope.

[0015] Furthermore, the handheld part is provided with an operating handle, which is rotatably mounted on the handheld part, and the other end of the pull rope is fixedly connected to the operating handle.

[0016] Furthermore, a second pivot is formed on the operating handle to engage with the handheld part, and the operating handle can rotate around the second pivot.

[0017] Furthermore, the cannula body includes a fixing part, a bending part, and a mounting part, the lens assembly is disposed in the mounting part, and the bending part is connected between the fixing part and the mounting part;

[0018] The hysteroscope also includes an angle adjustment mechanism, which includes a turntable, a first wire, and a second wire. One end of the first wire is fixedly connected to the radial outer side of the lens assembly or the radial outer side of the mounting part, and the other end is fixedly connected to the turntable. One end of the second wire is fixedly connected to the radial inner side of the lens assembly, and the other end is fixedly connected to the turntable.

[0019] Furthermore, the insertion part is provided on a fixed base, and a frustum is formed on the fixed base, and the turntable is rotatably fitted on the frustum.

[0020] Compared with the prior art, the advantages of this invention are:

[0021] 1. By incorporating a positioning plate that opens and closes, the surgical instrument can move from the first to the second tube segment. This increases the diameter of the instrument channel, accommodating various types of surgical instruments. Once the instrument head exits the second tube segment, the positioning plate, under the elastic force of a spring element, switches from the open to the closed state. At this point, the positioning plate pre-tightens the surgical instrument, preventing it from wobbling within the instrument channel and ensuring precise positioning of the lesion, thus guaranteeing surgical safety. The entire procedure eliminates the need to change the hysteroscopy insertion cannula, reducing surgical costs, simplifying the procedure, and mitigating the risk of secondary injury to the patient.

[0022] 2. By setting the cannula body as a fixed part, a bending part and an installation part connected in sequence, the lens assembly is set in the installation part; by setting a turntable, a first pull wire and a second pull wire, the doctor can rotate the turntable. When the turntable rotates, it generates different pulling forces on the first pull wire and the second pull wire, realizing the up and down bending of the bending part, thereby enabling the lens assembly located in the installation part to take pictures upward or downward. The setting of the angle adjustment mechanism can realize multi-angle observation of the uterine cavity. Attached Figure Description

[0023] Figure 1 A schematic diagram of the insertion tube with the positioning plate in the open state;

[0024] Figure 2 This is a schematic diagram of the insertion tube with the positioning plate closed.

[0025] Figure 3 This is a partial structural diagram of the cannula body;

[0026] Figure 4 This is a partial structural cross-sectional view of the insertion tube;

[0027] Figure 5 for Figure 4 Enlarged view of section A in the middle;

[0028] Figure 6 for Figure 4 Enlarged view of section B;

[0029] Figure 7 for Figure 4 Enlarged view of section C;

[0030] Figure 8 This is a partial structural cross-sectional view of the handheld part;

[0031] Figure 9 This is a partial structural cross-sectional view of the insertion section.

[0032] 100. Handheld part; 110. Operating handle; 111. Second rotating shaft; 200. Insertion part; 210. Fixing base; 300. Insertion tube; 310. Insertion tube body; 311. Fixing hole; 312. Groove; 313. Fixing part; 314. Bending part; 315. Mounting part; 320. Positioning plate; 321. Proximal end; 322. Distal end; 323. First rotating shaft; 330. Elastic element; 340. Lens assembly; 350. Instrument channel; 351. First tube segment; 352. Second tube segment; 360. Pull cord; 400. Angle adjustment mechanism; 410. Turntable; 420. First pull wire; 430. Second pull wire. Detailed Implementation

[0033] The following detailed, non-limiting description of the invention's technical solutions, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0034] like Figures 1-9As shown, a hysteroscope according to an embodiment of the present invention includes a handheld part 100 and an insertion part 200 connected to the handheld part 100. The insertion part 200 includes an insertion tube 300, which includes an insertion tube body 310, a positioning plate 320, an elastic member 330, and a lens assembly 340 disposed on the insertion tube body 310. An instrument channel 350 extending along the axial direction of the insertion tube 300 is formed inside the insertion tube 300. The instrument channel 350 includes a first tube segment 351 and a second tube segment 352 that communicate with each other. The first tube segment 351 is formed inside the insertion tube body 310, and the second tube segment 352 is formed jointly by the insertion tube body 310 and the positioning plate 320. The lens assembly 340 is at least partially... The positioning plate 320 is located in the radial direction of the second tube segment 352; the proximal end 321 of the positioning plate 320 is rotatably connected to the cannula body 310, and the distal end 322 of the positioning plate 320 is connected to the cannula body 310 through the elastic element 330; the positioning plate 320 includes an open state and a closed state. When the surgical instrument moves from the first tube segment 351 to the second tube segment 352, the positioning plate 320 switches from the closed state to the open state under the pressure of the head of the surgical instrument to increase the radial cross-sectional area of ​​the second tube segment 352; when the head of the surgical instrument comes out of the second tube segment 352, the positioning plate 320 switches from the open state to the closed state under the elastic force of the elastic element 330. At this time, the positioning plate 320 abuts against the rod of the surgical instrument. This invention utilizes a positioning plate 320 that allows the surgical instrument to open as it moves from the first tube segment 351 to the second tube segment 352, increasing the diameter of the instrument channel 350. This eliminates the need to increase the outer diameter of the insertion tube 300 or prepare multiple diameter insertion tubes 300. The insertion tube 300 can accommodate various types of surgical instruments. Once the head of the surgical instrument exits the second tube segment 352, the positioning plate 320 switches from an open to a closed state under the elastic force of the elastic element 330. At this point, the positioning plate 320 pre-tightens the surgical instrument, preventing it from wobbling within the instrument channel 350 and ensuring precise positioning of the lesion, thus guaranteeing surgical safety. The entire surgical procedure eliminates the need to change the hysteroscope insertion tube 300, reducing surgical costs, simplifying the procedure, and avoiding the risk of secondary injury to the patient.

[0035] like Figure 3 and Figure 5 As shown, a fixing hole 311 is formed on the cannula body 310, and a first rotating shaft 323 is integrally formed at the proximal end 321 of the positioning plate 320. The first rotating shaft 323 is engaged with the fixing hole 311, and the positioning plate 320 can rotate around the first rotating shaft 323.

[0036] The positioning plate 320 has an arc-shaped cross-section. When the positioning plate 320 is in the closed state, the positioning plate 320 and the insertion tube body 310 form a cylindrical shape.

[0037] like Figure 5 As shown, the proximal end 321 of the positioning plate 320 is spaced apart from the cannula body 310 to avoid interference from the rotation of the positioning plate 320 by the cannula body 310.

[0038] In this embodiment, the elastic element 330 is semi-circular, and the middle section of the elastic element 330 is wrapped around the insertion tube body 310. Both ends of the elastic element 330 are fixedly connected to the far end 322 of the positioning plate 320.

[0039] like Figure 7 As shown, a groove 312 is formed on the cannula body 310, and at least part of the middle section of the elastic member 330 is located in the groove 312 to prevent the elastic member 330 from slipping and to ensure that the elastic tension generated by the elastic member 330 on the positioning plate 320 is consistent.

[0040] like Figure 5 As shown, a pull rope 360 ​​is installed inside the wall of the cannula body 310. One end of the pull rope 360 ​​is fixedly connected to the proximal end 321 of the positioning plate 320. When it is necessary to remove the surgical instrument, the operator can drive the positioning plate 320 from the closed state to the open state by pulling the other end of the pull rope 360. This is simple and convenient, and makes it easy for doctors to change multiple other surgical instruments of different models in one operation.

[0041] like Figure 8 As shown, an operating handle 110 is provided on the handheld part 100. The operating handle 110 is rotatably mounted on the handheld part 100, and the other end of the pull rope 360 ​​is fixedly connected to the operating handle 100. The doctor can turn the operating handle 110, which rotates the operating handle 110 and pulls the pull rope 360, thereby driving the positioning plate 320 to switch from a closed state to an open state.

[0042] In this embodiment, a second rotating shaft 111 is formed on the operating handle 110 to engage with the handheld part 100, and the operating handle 110 can rotate around the second rotating shaft 111.

[0043] like Figures 2-4 As shown, the cannula body 310 includes a fixing part 313, a bending part 314, and a mounting part 315. The lens assembly 340 is disposed within the mounting part 315, and the bending part 314 connects the fixing part 313 and the mounting part 315. (Reference) Figure 9The hysteroscope also includes an angle adjustment mechanism 400, which includes a turntable 410, a first pull wire 420, and a second pull wire 430. One end of the first pull wire 420 is fixedly connected to the radially outer side of the lens assembly 340 or the radially outer side of the mounting part 315, and the other end is fixedly connected to the turntable 410. One end of the second pull wire 430 is fixedly connected to the radially inner side of the lens assembly 340, and the other end is fixedly connected to the turntable 410. The doctor can rotate the turntable 410. When the turntable 410 rotates, it generates different pulling forces on the first pull wire 420 and the second pull wire 430. When the pulling force of the turntable 410 on the first pull wire 420 is greater than the pulling force on the second pull wire 430, the bending part 314 bends upward, and vice versa. This allows the lens assembly 340 located in the mounting part 315 to take pictures upward or downward. The angle adjustment mechanism 400 can be set to enable multi-angle observation of the uterine cavity.

[0044] In this embodiment, the bend 314 adopts a flexible hose structure.

[0045] The insertion part 200 is provided on the fixed base 210, and a frustum (not shown in the figure) is formed on the fixed base 210. The turntable 410 is rotatably fitted on the frustum.

[0046] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A hysteroscope, comprising a handle (100) and an insertion part (200) connected to said handle (100), characterized in that, The insertion part (200) includes an insertion tube (300), which includes an insertion tube body (310), a positioning plate (320), an elastic element (330), and a lens assembly (340) disposed on the insertion tube body (310). The insertion tube (300) has an instrument channel (350) extending along the axial direction of the insertion tube (300). The instrument channel (350) includes a first tube segment (351) and a second tube segment (352) that are interconnected. The first tube segment (351) is formed inside the insertion tube body (310). The second tube segment (352) is formed by the insertion tube body (310) and the positioning plate (320). The lens assembly (340) is at least partially located in the radial direction of the second tube segment (352). The proximal end (321) of the positioning plate (320) is rotatably connected to the cannula body (310), and the distal end (322) of the positioning plate (320) is connected to the cannula body (310) through the elastic member (330). The positioning plate (320) includes an open state and a closed state. When the surgical instrument moves from the first tube segment (351) to the second tube segment (352), the positioning plate (320) switches from the closed state to the open state under the pressure of the head of the surgical instrument to increase the radial cross-sectional area of ​​the second tube segment (352). When the head of the surgical instrument comes out of the second tube segment (352), the positioning plate (320) switches from the open state to the closed state under the elastic force of the elastic member (330). At this time, the positioning plate (320) abuts against the rod of the surgical instrument.

2. The hysteroscope according to claim 1, characterized in that, A fixing hole (311) is formed on the cannula body (310), and a first rotating shaft (323) is integrally formed at the proximal end (321) of the positioning plate (320). The first rotating shaft (323) is engaged with the fixing hole (311), and the positioning plate (320) can rotate around the first rotating shaft (323).

3. The hysteroscope according to claim 1, characterized in that, The proximal end (321) of the positioning plate (320) is spaced apart from the cannula body (310).

4. The hysteroscope according to claim 1, characterized in that, The elastic element (330) is semi-circular, and the middle section of the elastic element (330) is wrapped around the cannula body (310). Both ends of the elastic element (330) are fixedly connected to the far end (322) of the positioning plate (320).

5. The hysteroscope according to claim 4, characterized in that, A groove (312) is formed on the cannula body (310), and the middle section of the elastic member (330) is at least partially located in the groove (312).

6. The hysteroscope according to claim 1, characterized in that, A pull rope (360) is installed inside the wall of the cannula body (310). One end of the pull rope (360) is fixedly connected to the proximal end (321) of the positioning plate (320). When it is necessary to remove the surgical instrument, the operator can drive the positioning plate (320) from the closed state to the open state by pulling the other end of the pull rope (360).

7. The hysteroscope according to claim 6, characterized in that, An operating handle (110) is provided on the hand-held part (100). The operating handle (110) is rotatably mounted on the hand-held part (100), and the other end of the pull rope (360) is fixedly connected to the operating handle (100).

8. The hysteroscope according to claim 7, characterized in that, The operating handle (110) has a second rotating shaft (111) that mates with the handheld part (100), and the operating handle (110) can rotate around the second rotating shaft (111).

9. The hysteroscope according to claim 1, characterized in that, The cannula body (310) includes a fixing part (313), a bending part (314) and a mounting part (315). The lens assembly (340) is disposed in the mounting part (315), and the bending part (314) is connected between the fixing part (313) and the mounting part (315). The hysteroscope also includes an angle adjustment mechanism (400), which includes a turntable (410), a first wire (420), and a second wire (430). One end of the first wire (420) is fixedly connected to the radial outer side of the lens assembly (340) or the radial outer side of the mounting part (315), and the other end is fixedly connected to the turntable (410). One end of the second wire (430) is fixedly connected to the radial inner side of the lens assembly (340), and the other end is fixedly connected to the turntable (410).

10. The hysteroscope according to claim 9, characterized in that, The insertion part (200) is provided on the fixed base (210), and a frustum is formed on the fixed base (210). The turntable (410) is rotatably sleeved on the frustum.

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