Hysteroscope

Abstract

The hysteroscope comprises a handheld part and an insertion part connected with the handheld part, the insertion part comprises an insertion tube, and the insertion tube comprises an insertion tube body, a positioning plate, an elastic piece and a lens assembly arranged on the insertion tube body; an instrument channel extending in the axial direction of the insertion tube is formed in the insertion tube, the instrument channel comprises a first tube section and a second tube section which are communicated with each other, the first tube section is formed in the insertion tube body, the second tube section is jointly formed by the insertion tube body and the positioning plate, and at least part of the lens assembly is located in the radial direction of the second tube section; the near end of the positioning plate is rotatably connected to the cannula body, and the far end of the positioning plate is connected with the cannula body through an elastic piece. The device can be suitable for various surgical instruments of different models, the surgical cost is reduced, the surgical process is simplified, and the risk of secondary injury to a patient is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of hysteroscopes, and in particular to a hysteroscope. Background Art

[0002] Hysteroscopy is used for examination and treatment of the uterine cavity. When in use, the lens of the hysteroscope can magnify and observe the parts in the uterine cavity. Surgical instruments can be used to perform surgical operations on the uterine cavity through the hysteroscope.

[0003] The hysteroscope includes an insertion part, and the insertion part includes a cannula extending into the uterine cavity, and the cannula has an instrument channel, and the surgical instrument passes through the instrument channel to enter the uterine cavity for surgical operation. Since the distal end of the cannula is provided with a camera and a light source, the radial space of the instrument channel at the distal end of the cannula is narrowed. Therefore, in order to successfully extend the surgical instrument from the distal end of the instrument channel, the prior art means generally increase the outer diameter of the cannula to increase the radial space of the instrument channel at the distal end of the cannula, but increasing the outer diameter of the cannula will increase the patient's pain on the one hand, and on the other hand, due to the large number of surgical instrument models, the doctor needs to select the appropriate surgical instrument according to the cause of the disease. If a smaller instrument is selected, the small-sized instrument is easy to shake in the instrument channel with a larger radial space, and the lesion position cannot be accurately located. Therefore, in order to adapt to different types of surgical instruments, a variety of cannula with different inner diameter channels will be made. Since some lesions require different types of surgical instruments, the hysteroscope has to replace the cannula with the corresponding inner diameter channel, which increases the cost of the operation, and the surgical procedure is cumbersome. Moreover, such an approach requires the cannula to be reinserted into the uterine cavity, which will cause the risk of secondary injury to the patient. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a hysteroscope that can be used with a variety of different types of surgical instruments, thereby reducing surgical costs, simplifying the surgical process, and avoiding the risk of secondary injury to the patient.

[0005] The present invention is achieved through the following technical solutions:

[0006] A hysteroscope comprises a handheld portion and an insertion portion connected to the handheld portion, wherein the insertion portion comprises an insertion tube, and the insertion tube comprises an insertion tube body, a positioning plate, an elastic member, and a lens assembly arranged on the insertion tube body;

[0007] An instrument channel extending in the axial direction of the insertion tube is formed inside the insertion tube, and 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, the second tube segment is formed by the insertion tube body and the positioning plate, and 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 member;

[0009] The positioning plate includes an open state and a closed state. When the surgical instrument runs from the first tube segment to the second tube segment, the positioning plate is switched from the closed state to the open state under the squeezing 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 is switched from the open state to the closed state under the elastic force of the elastic member, and 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 matched 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 member is semicircular in shape, and the middle section of the elastic member is wound around the cannula body, and both ends of the elastic member are fixedly connected to the distal 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 arranged inside the tube wall of the cannula body, one end of which is fixedly connected to the proximal end of the positioning plate. When the surgical instrument needs to be removed, the operator can drive the positioning plate to switch from a closed state to an open state by pulling the other end of the pull rope.

[0015] Furthermore, an operating handle is provided on the hand-held portion, the operating handle is rotatably provided on the hand-held portion, and the other end of the pull rope is fixedly connected to the operating handle.

[0016] Furthermore, a second rotating shaft matched with the hand-held part is formed on the operating handle, and the operating handle can rotate around the second rotating shaft.

[0017] Further, the cannula body includes a fixing portion, a bending portion and a mounting portion, the lens assembly is arranged in the mounting portion, and the bending portion is connected between the fixing portion and the mounting portion;

[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 to the radial outer side of the mounting portion, and the other end is fixedly connected to the turntable, and 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 inserting portion is arranged on a fixing seat, a truncated table is formed on the fixing seat, and the turntable is rotatably sleeved on the truncated table.

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

[0021] 1. By setting the positioning plate in an open and closed position, when the surgical instrument runs from the first pipe section to the second pipe section, the positioning plate can be opened to increase the diameter of the instrument channel, and it can be applicable to a variety of different types of surgical instruments. When the head of the surgical instrument comes out of the second pipe section, the positioning plate switches from an open state to a closed state under the elastic force of the elastic member. At this time, the positioning plate pre-tightens the surgical instrument to prevent the surgical instrument from shaking in the instrument channel, ensuring that the surgical instrument accurately locates the lesion and ensures the safety of the operation. The entire surgical process does not require the replacement of the insertion tube of the hysteroscope, which reduces the cost of surgery, simplifies the surgical process, and avoids the risk of secondary injury to the patient.

[0022] 2. By configuring the cannula body to include a fixed portion, a bending portion and an installation portion which are connected in sequence, wherein the lens assembly is arranged in the installation portion; by configuring a turntable, a first drawing wire and a second drawing wire, the doctor can rotate the turntable at the same time. When the turntable rotates, different pulling forces are generated on the first drawing wire and the second drawing wire, thereby realizing the up and down bending of the bending portion, and then realizing that the lens assembly located in the installation portion can shoot upward or downward, and the setting of the angle adjustment mechanism can realize multi-angle observation of the uterine cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the insertion tube when the positioning plate is opened;

[0024] Figure 2 It is a schematic diagram of the structure of the insertion tube when the positioning plate is in a closed state;

[0025] Figure 3 It is a schematic diagram of the local structure of the cannula body;

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

[0027] Figure 5 for Figure 4 Enlarged view of part A;

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

[0029] Figure 7 for Figure 4 Enlarged view of part C in the middle;

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

[0031] Fig. 9 It is a partial structural cross-sectional view of the insertion part.

[0032] 100, hand-held part; 110, operating handle; 111, second rotating shaft; 200, insertion part; 210, fixing seat; 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 member; 340, lens assembly; 350, instrument channel; 351, first pipe section; 352, second pipe section; 360, pull rope; 400, angle adjustment mechanism; 410, turntable; 420, first drawing wire; 430, second drawing wire. DETAILED DESCRIPTION

[0033] The following is a further non-restrictive detailed description of the technical solution of the invention in conjunction with the preferred embodiments and the accompanying drawings. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings. In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and cannot be understood as limitations on the present invention.

[0034] like Figure 1-Figure 9As shown, a hysteroscope according to an embodiment of the present invention comprises a handheld portion 100 and an insertion portion 200 connected to the handheld portion 100, characterized in that the insertion portion 200 comprises an insertion tube 300, the insertion tube 300 comprises an insertion tube body 310, a positioning plate 320, an elastic member 330 and a lens assembly 340 arranged 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 comprises a first tube segment 351 and a second tube segment 352 which 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, and 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 member 330; the positioning plate 320 includes an open state and a closed state. When the surgical instrument runs from the first tube segment 351 to the second tube segment 352, the positioning plate 320 is switched from the closed state to the open state under the squeezing 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 is switched from the open state to the closed state under the elastic force of the elastic member 330, and at this time, the positioning plate 320 abuts against the rod of the surgical instrument. The present invention is provided with an opening and closing positioning plate 320. When the surgical instrument runs from the first tube section 351 to the second tube section 352, the positioning plate 320 can be opened to increase the diameter of the instrument channel 350. There is no need to increase the outer diameter of the insertion tube 300 or prepare insertion tubes 300 of various diameters. The insertion tube 300 can be applicable to various different types of surgical instruments. When the head of the surgical instrument comes out of the second tube section 352, the positioning plate 320 switches from an open state to a closed state under the elastic force of the elastic member 330. At this time, the positioning plate 320 pre-tightens the surgical instrument to prevent the surgical instrument from shaking in the instrument channel 350, ensuring that the surgical instrument accurately locates the lesion position and ensuring the safety of the operation. The entire surgical process does not require the replacement of the insertion tube 300 of the hysteroscope, which reduces the cost of the operation, simplifies the surgical process, and avoids 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 matched with the fixing hole 311 , and the positioning plate 320 can rotate around the first rotating shaft 323 .

[0036] The cross section of the positioning plate 320 is in an arc shape. When the positioning plate 320 is in a closed state, the positioning plate 320 and the cannula 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 prevent the cannula body 310 from interfering with the rotation of the positioning plate 320 .

[0038] In this embodiment, the elastic member 330 is semicircular, and the middle section of the elastic member 330 is wound around the cannula body 310 , and both ends of the elastic member 330 are fixedly connected to the distal end 322 of the positioning plate 320 .

[0039] like Figure 7 As shown, 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 , so as to avoid the elastic member 330 from slipping and 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 set inside the tube wall of the cannula body 310, and one end of the pull rope 360 ​​is fixedly connected to the proximal end 321 of the positioning plate 320. When the surgical instrument needs to be removed, the operator can drive the positioning plate 320 to switch from a closed state to an open state by pulling the other end of the pull rope 360. This is simple and convenient, and it is easy for doctors to replace multiple other different types of surgical instruments in one operation.

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

[0042] In this embodiment, a second rotation axis 111 matched with the hand-held portion 100 is formed on the operating handle 110 , and the operating handle 110 can rotate around the second rotation axis 111 .

[0043] like Figure 2-Figure 4 As shown, the cannula body 310 includes a fixing portion 313, a bending portion 314 and a mounting portion 315, the lens assembly 340 is disposed in the mounting portion 315, and the bending portion 314 is connected between the fixing portion 313 and the mounting portion 315; Fig. 9The hysteroscope further 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 portion 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. The doctor can rotate the turntable 410, and when the turntable 410 rotates, different pulling forces are generated on the first wire 420 and the second wire 430. When the pulling force of the turntable 410 on the first wire 420 is greater than the pulling force on the second wire 430, the bending portion 314 bends upward, and vice versa, the bending portion 314 bends downward, so that the bending portion 314 can be bent up and down, thereby realizing that the lens assembly 340 located in the mounting portion 315 can shoot upward or downward. The setting of the angle adjustment mechanism 400 can realize multi-angle observation of the uterine cavity.

[0044] In this embodiment, the curved portion 314 adopts a hose structure.

[0045] The inserting portion 200 is disposed on a fixing seat 210 , a truncated table (not shown) is formed on the fixing seat 210 , and the rotating disk 410 is rotatably sleeved on the truncated table.

[0046] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A hysteroscope, comprising a handheld portion (100) and an insertion portion (200) connected to the handheld portion (100), characterized in that: The insertion portion (200) comprises an insertion tube (300), and the insertion tube (300) comprises an insertion tube body (310), a positioning plate (320), an elastic member (330), and a lens assembly (340) arranged on the insertion tube body (310); An instrument channel (350) extending in the axial direction of the insertion tube (300) is formed inside the insertion tube (300), and the instrument channel (350) includes a first tube section (351) and a second tube section (352) which are connected to each other, the first tube section (351) is formed inside the insertion tube body (310), the second tube section (352) is formed by the insertion tube body (310) and the positioning plate (320), and the lens assembly (340) is at least partially located in the radial direction of the second tube section (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) via the elastic member (330); The positioning plate (320) includes an open state and a closed state. When the surgical instrument runs from the first tube segment (351) to the second tube segment (352), the positioning plate (320) is switched from the closed state to the open state under the squeezing 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) is switched from the open state to the closed state under the elastic force of the elastic member (330). At this time, the positioning plate (320) is in contact with 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 matched 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 member (330) is semicircular in shape, and the middle section of the elastic member (330) is wound around the cannula body (310), and both ends of the elastic member (330) are fixedly connected to the distal 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 a 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 arranged inside the tube wall of the cannula body (310), and one end of the pull rope (360) is fixedly connected to the proximal end (321) of the positioning plate (320). When the surgical instrument needs to be removed, the operator can drive the positioning plate (320) to switch from a closed state to an 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 handheld portion (100), the operating handle (110) is rotatably provided on the handheld portion (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) is formed with a second rotating shaft (111) matched with the hand-held 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) comprises a fixing portion (313), a bending portion (314) and a mounting portion (315); the lens assembly (340) is arranged in the mounting portion (315); and the bending portion (314) is connected between the fixing portion (313) and the mounting portion (315); The hysteroscope also includes an angle adjustment mechanism (400), which includes a turntable (410), a first wire (420) and a second wire (430), wherein one end of the first wire (420) is fixedly connected to the radial outer side of the lens assembly (340) or to the radial outer side of the mounting portion (315), and the other end is fixedly connected to the turntable (410), and 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 portion (200) is arranged on a fixing seat (210), a truncated table is formed on the fixing seat (210), and the rotating disk (410) is rotatably sleeved on the truncated table.

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