Endoscope insertion part rotating mechanism

Abstract

The utility model discloses an endoscope insertion part rotating mechanism which is installed on a handle shell and comprises a threaded sleeve, a locking nut, a rotating sleeve, an insertion pipe and a knob, one end of the threaded sleeve is connected with the handle shell, the other end of the threaded sleeve protrudes out of the connecting end of the handle shell in the axial direction of the handle shell, and the other end of the threaded sleeve is provided with external threads; the locking nut is in threaded connection with the other end of the threaded sleeve, and the end face of the locking nut abuts against the end face of the connecting end. The rotating sleeve is rotatably connected in the threaded sleeve, the rotating sleeve and the threaded sleeve are coaxially arranged, and the rotating sleeve can rotate; the insertion pipe is inserted into the rotating sleeve, the insertion pipe and the rotating sleeve are coaxially arranged, and the insertion pipe is fixed in the rotating sleeve; the knob sleeves the peripheral wall of the rotating sleeve, is connected with the rotating sleeve through a connecting piece, and is used for driving the rotating sleeve to rotate.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopes, in particular to a rotating mechanism of an endoscope insertion part. Background Art

[0002] The insertion part of the endoscope is connected to the handle of the endoscope, and the insertion part generally needs to be rotated left and right to change the viewing angle of the camera.

[0003] The previous insertion portion rotation mechanism is relatively complex, and the prior art with reference to publication number CN116898382A is inconvenient during assembly and is not conducive to product production. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an endoscope insertion part rotation mechanism, which can simplify the rotation mechanism of the insertion part and facilitate the assembly and production of the endoscope.

[0005] According to the first aspect of the utility model, an endoscope insertion part rotation mechanism is installed on the handle shell, including: a threaded sleeve, one end of which is connected to the handle shell, the other end of the threaded sleeve protrudes out of the connecting end of the handle shell along the axial direction of the handle shell, and the other end of the threaded sleeve is provided with an external thread; a locking nut, threadedly connected to the other end of the threaded sleeve, and the end face of the locking nut abuts against the end face of the connecting end; a rotating sleeve, rotatably connected to the threaded sleeve, the rotating sleeve is coaxially arranged with the threaded sleeve, and the rotating sleeve can rotate on its own; an insertion tube, inserted into the rotating sleeve, the insertion tube is coaxially arranged with the rotating sleeve, and the insertion tube is fixed in the rotating sleeve; a knob, sleeved on the outer peripheral wall of the rotating sleeve, the knob is connected to the rotating sleeve through a connecting piece, and the knob is used to drive the rotating sleeve to rotate.

[0006] According to an embodiment of the utility model, an endoscope insertion part rotation mechanism has at least the following beneficial effects: the threaded sleeve is inserted from the upper end of the handle shell and gradually clamped in the inner cavity structure of the handle shell that narrows from top to bottom, and the other end of the threaded sleeve is provided with an external thread and protrudes out of the lower end of the handle shell. Under the threaded tightening action of the locking nut, the threaded sleeve is locked on the handle shell. Before installing the threaded sleeve, the rotating sleeve is installed in the threaded sleeve. During installation, the rotating sleeve and the threaded sleeve are directly installed as a whole in the handle shell and then fixed with the locking nut. Then the knob and the insertion tube are installed. The structure is simple, the assembly is convenient, the assembly efficiency is improved, and it is beneficial to production.

[0007] According to some embodiments of the utility model, the outer circumferential wall of the threaded sleeve is provided with a first installation groove, a first sealing ring is sleeved in the first installation groove, the outer ring wall of the first sealing ring abuts against the inner circumferential wall of the connecting end, and the first sealing ring can not only ensure the sealing of the inner cavity of the handle housing, but also fasten the rotating sleeve and the threaded sleeve as a whole.

[0008] According to some embodiments of the utility model, a second installation groove is provided on the outer circumferential wall of the rotating sleeve, a second sealing ring is sleeved in the second installation groove, the outer ring wall of the second sealing ring abuts against the inner circumferential wall of the threaded sleeve, and the second sealing ring is provided to seal the gap between the rotating sleeve and the threaded sleeve.

[0009] According to some embodiments of the utility model, a snap ring is further included, and an annular groove is provided at one end of the rotating sleeve close to the handle housing, the snap ring is clamped in the annular groove, and the lower end face of the snap ring abuts against the end face of the threaded sleeve. The rotating sleeve can rotate relative to the snap ring, and the snap ring is provided to facilitate the installation of the rotating sleeve and to limit the rotating sleeve in the axial direction to prevent the rotating sleeve from moving in the axial direction.

[0010] According to some embodiments of the utility model, the retaining ring is configured to be C-shaped, and a guide surface is provided at the opening of the retaining ring. The C-shaped retaining ring is easy to install and can be directly inserted into the axial gap between the threaded sleeve and the rotating sleeve through the C-shaped opening. The guide surface makes the retaining ring easier to insert and install.

[0011] According to some embodiments of the present invention, the connecting member includes a pin, a pin column or a screw.

[0012] According to some embodiments of the utility model, the threaded sleeve is provided with a limit block along the axial direction, the rotating sleeve is provided with a limit groove along the circumferential direction, the limit block is accommodated in the limit groove, the end wall of the limit groove is used to block the limit block, the limit block is also provided with a threaded structure, and its threaded structure is continuous with the external thread on the threaded sleeve, which not only facilitates the screwing of the locking nut, but also can cooperate with the limit groove to achieve the limiting effect.

[0013] According to some embodiments of the present invention, the limiting groove is arranged in an arc shape in the circumference of the rotating sleeve, and the angle of the arc is between 0-240°.

[0014] According to some embodiments of the present invention, an anti-slip structure is provided on the knob.

[0015] According to some embodiments of the utility model, a sheath is further included, one end of which is connected to the free end of the rotating sleeve, a slot is provided on the outer peripheral wall of one end of the sheath, the knob is provided with a snap structure, the snap structure is snapped into the slot, and the other end of the sheath is narrowed and covers the insertion tube.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a schematic structural diagram of a quarter cross-section of the endoscope insertion portion rotation mechanism of an embodiment of the utility model;

[0019] Figure 2 for Figure 1 An exploded view showing a quarter section of the endoscope insertion portion rotation mechanism;

[0020] Figure 3 for Figure 1 A schematic structural diagram of the endoscope insertion portion rotation mechanism is shown;

[0021] Figure 4 for Figure 3 An exploded view of the endoscope insertion portion rotation mechanism is shown;

[0022] Figure 5 for Figure 1 A schematic structural diagram of a rotating sleeve of a quarter-section view of a rotating mechanism of an endoscope insertion portion is shown;

[0023] Figure 6 for Figure 3 A schematic structural diagram of a threaded sleeve of a rotation mechanism of an endoscope insertion portion is shown.

[0024] Threaded sleeve 100, first mounting groove 110, first sealing ring 111, and limiting block 120;

[0025] Locking nut 200;

[0026] Rotating sleeve 300, second mounting groove 310, second sealing ring 311, annular clamping groove 320;

[0027] Snap ring 330, guide surface 331, limiting groove 340;

[0028] Insertion tube 400;

[0029] Knob 500, connector 510, anti-slip structure 520, buckle structure 530;

[0030] Handle housing 600 , sheath 700 , and slot 710 . DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "more" is two or more, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] Reference Figures 1 to 6, an endoscope insertion portion rotation mechanism, installed on a handle housing 600, includes a threaded sleeve 100, a locking nut 200, a rotating sleeve 300, an insertion tube 400 and a knob 500: one end of the threaded sleeve 100 is connected to the handle housing 600, the other end of the threaded sleeve 100 protrudes out of the connecting end of the handle housing 600 along the axial direction of the handle housing 600, and the other end of the threaded sleeve 100 is provided with an external thread; the locking nut 200 is threadedly connected to the other end of the threaded sleeve 100, and the end face of the locking nut 200 abuts against On the end surface of the connecting end; the rotating sleeve 300 is rotatably connected to the threaded sleeve 100, the rotating sleeve 300 is coaxially arranged with the threaded sleeve 100, and the rotating sleeve 300 can rotate; the insertion tube 400 is inserted into the rotating sleeve 300, the insertion tube 400 is coaxially arranged with the rotating sleeve 300, and the insertion tube 400 is fixed in the rotating sleeve 300; the knob 500 is sleeved on the outer peripheral wall of the rotating sleeve 300, the knob 500 is connected to the rotating sleeve 300 through the connecting piece 510, and the knob 500 is used to drive the rotating sleeve 300 to rotate. The threaded sleeve 100 is inserted from the upper end of the handle housing 600 and is gradually clamped in the inner cavity structure of the handle housing 600 which narrows from top to bottom. The other end of the threaded sleeve 100 is provided with an external thread and protrudes out of the lower end of the handle housing 600. Under the threaded tightening action of the locking nut 200, the threaded sleeve 100 is locked on the handle housing 600. Before installing the threaded sleeve 100, the rotating sleeve 300 is installed in the threaded sleeve 100. During installation, the rotating sleeve 300 and the threaded sleeve 100 are directly installed as a whole in the handle housing 600 and then fixed with the locking nut 200, and then the knob 500 and the insertion tube 400 are installed. The structure is simple, the assembly is convenient, the assembly efficiency is improved, and it is beneficial to production. It can be understood that after the rotating sleeve 300 and the threaded sleeve 100 are installed as a whole, the protruding part of the threaded sleeve 100 is similar to a bolt, and the locking nut 200 is screwed on the bolt and abuts against the lower end surface of the handle housing 600, so that the rotating sleeve 300 and the threaded sleeve 100 are locked on the handle housing 600 as a whole. The subsequent installation only needs to put the knob 500 and the sleeve 700 on the installation end of the rotating sleeve 300, which is convenient and quick to install.

[0036] In some embodiments, a first mounting groove 110 is provided on the outer peripheral wall of the threaded sleeve 100, and a first sealing ring 111 is sleeved in the first mounting groove 110. The outer ring wall of the first sealing ring 111 abuts against the inner peripheral wall of the connecting end. The first sealing ring 111 can not only ensure the sealing of the inner cavity of the handle housing 600, but also fasten the rotating sleeve 300 and the threaded sleeve 100 as a whole.

[0037] In some embodiments, a second installation groove 310 is provided on the outer circumferential wall of the rotating sleeve 300, and a second sealing ring 311 is sleeved in the second installation groove 310. The outer ring wall of the second sealing ring 311 abuts against the inner circumferential wall of the threaded sleeve 100. The second sealing ring 311 is provided to seal the gap between the rotating sleeve 300 and the threaded sleeve 100.

[0038] In some embodiments, a snap ring 330 is further included. An annular groove 320 is provided at one end of the rotating sleeve 300 close to the handle housing 600. The snap ring 330 is clamped in the annular groove 320. The lower end surface of the snap ring 330 abuts against the end surface of the threaded sleeve 100. The rotating sleeve 300 can rotate relative to the snap ring 330. The snap ring 330 is provided to facilitate the installation of the rotating sleeve 300 and to limit the rotating sleeve 300 in the axial direction to prevent the rotating sleeve 300 from moving in the axial direction. It can be understood that the annular groove 320 is provided on the outer peripheral wall of the rotating sleeve 300.

[0039] In some embodiments, the retaining ring 330 is configured to be C-shaped, and a guide surface 331 is provided at the opening of the retaining ring 330. The C-shaped retaining ring 330 is easy to install and can be directly inserted into the axial gap between the threaded sleeve 100 and the rotating sleeve 300 through the C-shaped opening. The guide surface 331 makes it easier to insert and install the retaining ring 330.

[0040] In some embodiments, the connector 510 includes a pin, a stud, or a screw.

[0041] In some embodiments, a limit block 120 is protruded along the axial direction of the threaded sleeve 100, and a limit groove 340 is provided along the circumferential direction of the rotating sleeve 300. The limit block 120 is accommodated in the limit groove 340, and the end wall of the limit groove 340 is used to block the limit block 120. The limit block 120 also has a threaded structure, and its thread structure is continuous with the external thread on the threaded sleeve 100, which is not only convenient for screwing the locking nut 200, but also can cooperate with the limit groove 340 to achieve the limiting function. The so-called continuity means that the thread structure on the limit block 120 is the same thread structure as the thread structure on the threaded sleeve 100, but the part of the limit block 120 protrudes out of the threaded sleeve 100 along the axial direction of the threaded sleeve 100.

[0042] Reference Figure 2 and Figure 4 The limiting groove 340 is arranged in an arc shape on the circumference of the rotating sleeve 300, and the angle of the arc is between 0-240°. Of course, the angle of the arc can also be set to be greater than 240°, provided that it does not affect the rotation limit of the inner tube in the insertion tube. The inner tube is a pipe arranged in the insertion tube, which extends to the upper part of the handle shell 600.

[0043] In some embodiments, an anti-slip structure 520 is provided on the knob 500. The so-called anti-slip structure is a concave-convex structure on the knob 500, which is convenient for pinching.

[0044] In some embodiments, a sheath 700 is further included, one end of which is connected to the free end of the rotating sleeve 300, a slot 710 is provided on the outer peripheral wall of one end of the sheath 700, and the knob 500 is provided with a snap structure 530, which is snapped into the slot 710. The other end of the sheath 700 is narrowed and covers the insertion tube 400. It can be understood that the sheath 700, the insertion tube 400 and the knob 500 rotate synchronously, and the sheath 700 is bonded to the free end of the rotating sleeve 300 by adhesive. The so-called free end of the rotating sleeve 300 is the lower end of the rotating sleeve 300.

[0045] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An endoscope insertion portion rotation mechanism, characterized in that: Installed on the handle housing (600), comprising: A threaded sleeve (100), one end of which is connected to the handle housing (600), the other end of which protrudes out of the connection end of the handle housing (600) along the axial direction of the handle housing (600), and the other end of which is provided with an external thread; A locking nut (200) is threadedly connected to the other end of the threaded sleeve (100), and the end surface of the locking nut (200) abuts against the end surface of the connecting end; A rotating sleeve (300) is rotatably connected to the threaded sleeve (100), the rotating sleeve (300) is coaxially arranged with the threaded sleeve (100), and the rotating sleeve (300) can rotate on its own; An insertion tube (400) is inserted into the rotating sleeve (300), the insertion tube (400) and the rotating sleeve (300) are coaxially arranged, and the insertion tube (400) is fixed in the rotating sleeve (300); The knob (500) is sleeved on the outer peripheral wall of the rotating sleeve (300); the knob (500) is connected to the rotating sleeve (300) via a connecting piece (510); and the knob (500) is used to drive the rotating sleeve (300) to rotate.

2. The endoscope insertion portion rotation mechanism according to claim 1, characterized in that: The outer peripheral wall of the threaded sleeve (100) is provided with a first installation groove (110), a first sealing ring (111) is sleeved in the first installation groove (110), and the outer ring wall of the first sealing ring (111) abuts against the inner peripheral wall of the connecting end.

3. The endoscope insertion portion rotation mechanism according to claim 2, characterized in that: A second installation groove (310) is provided on the outer peripheral wall of the rotating sleeve (300), a second sealing ring (311) is sleeved in the second installation groove (310), and the outer ring wall of the second sealing ring (311) abuts against the inner peripheral wall of the threaded sleeve (100).

4. The endoscope insertion portion rotation mechanism according to claim 1, characterized in that: The rotating sleeve (300) further comprises a snap ring (330), an annular snap groove (320) being arranged at one end of the rotating sleeve (300) close to the handle housing (600), the snap ring (330) being snapped into the annular snap groove (320), the lower end face of the snap ring (330) being abutted against the end face of the threaded sleeve (100), and the rotating sleeve (300) being rotatable relative to the snap ring (330).

5. The endoscope insertion portion rotation mechanism according to claim 4, characterized in that: The clamping ring (330) is configured to be C-shaped, and a guide surface (331) is provided at the opening of the clamping ring (330).

6. The endoscope insertion portion rotation mechanism according to claim 1, characterized in that: The connecting member (510) comprises a pin, a pin column or a screw.

7. The endoscope insertion portion rotation mechanism according to any one of claims 1 to 6, characterized in that: The threaded sleeve (100) is provided with a limit block (120) protruding along the axial direction, and the rotating sleeve (300) is provided with a limit groove (340) along the circumferential direction. The limit block (120) is accommodated in the limit groove (340), and the end wall of the limit groove (340) is used to block the limit block (120).

8. The endoscope insertion portion rotation mechanism according to claim 7, characterized in that: The limiting groove (340) is arranged in an arc shape in the circumference of the rotating sleeve (300), and the angle of the arc is between 0-240°.

9. The endoscope insertion portion rotation mechanism according to claim 1, characterized in that: The knob (500) is provided with an anti-slip structure (520).

10. The endoscope insertion portion rotation mechanism according to claim 8 or 9, characterized in that: It also includes a sheath (700), one end of which is connected to the free end of the rotating sleeve (300), a slot (710) is provided on the outer peripheral wall of one end of the sheath (700), the knob (500) is provided with a snap-fit ​​structure (530), the snap-fit ​​structure (530) is snap-fitted into the slot (710), and the other end of the sheath (700) is narrowed and covers the insertion tube (400).

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