Insertion part rotating mechanism for endoscope and bronchial endoscope

Abstract

The utility model provides an insertion portion rotating mechanism for endoscope and bronchus endoscope, the insertion portion rotating mechanism for endoscope comprises a rotating ring, an insertion tube and a fixing ring, the rotating ring and the insertion tube are fixedly connected in the circumferential direction, at least part of the fixing ring is arranged between the inner circumferential wall of the rotating ring and the outer circumferential wall of the insertion tube, and the fixing ring is arranged on the outer circumferential wall of the insertion tube. A first guide part is arranged on the outer circumferential wall of the fixed ring, a second guide part is arranged on the inner circumferential wall of the rotating ring, the first guide part and the second guide part are matched with each other to guide the rotating ring to rotate in the circumferential direction relative to the fixed ring, and a plurality of clamping structures for positioning the rotating ring in the circumferential direction are further arranged between the fixed ring and the rotating ring. According to the insertion part rotating mechanism for the endoscope and the bronchus endoscope, the insertion part can be driven to rotate only by rotating the rotating ring, the insertion part can be stably kept at a preset rotating angle through the arrangement of the clamping structure, and the rotating angle of the insertion part can be adjusted more easily.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and more specifically, relates to an insertion portion rotation mechanism for an endoscope and a bronchial endoscope. Background Art

[0002] In the field of medical surgery, with the development of surgical techniques and models, there has been a gradual transition from traditional open surgery to minimally invasive surgery; among them, bronchoscopic examination / treatment surgery has also received more and more attention with the development of ventilator technology. Bronchoscopy has many advantages such as minimally invasive, rapid postoperative recovery, and short hospital stay. In minimally invasive surgery, endoscopic surgery including upper / lower ventilators and thoracoscopes has the advantages of less trauma and low risk, and has been increasingly used in clinical practice. For example, bronchial secretion aspiration and BAL (bronchial alveolar lavage), bronchoscopic needle aspiration biopsy, bronchial-lung biopsy, balloon dilatation and cryotherapy. The addition of the rotation function of the insertion part helps:

[0003] (1) The bronchoscopist does not need to adopt an unnatural or compressive posture when performing bronchoscopy, which helps the physician to easily select the bronchial branch. The bronchoscopist can return the operating part to a comfortable position while maintaining the insertion tube position.

[0004] (2) It enables the bronchoscope operator to achieve precise control over the insertion tube. The operator can change the direction of the insertion tube by operating the rotary control ring instead of the operating part of the bronchoscope.

[0005] (3) The bronchoscope tip can be easily adjusted by the bronchoscope physician, which helps in selecting the bronchus into which the endoscopic diagnostic and therapeutic accessories are inserted.

[0006] However, the current structure for realizing the rotation of the insertion portion is relatively complex and difficult to operate. Utility Model Content

[0007] The purpose of the embodiments of the utility model is to provide an insertion portion rotation mechanism for an endoscope and a bronchial endoscope, so as to solve the technical problems existing in the prior art that the insertion portion rotation structure is complicated and the rotation operation is not easy to perform.

[0008] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide an insertion part rotation mechanism for an endoscope, comprising a rotating ring, an insertion tube and a fixed ring, the rotating ring and the insertion tube are circumferentially fixedly connected, at least a part of the fixed ring is arranged between the inner circumferential wall of the rotating ring and the outer circumferential wall of the insertion tube, the outer circumferential wall of the fixed ring is provided with a first guide part, the inner circumferential wall of the rotating ring is provided with a second guide part, the first guide part and the second guide part cooperate with each other to guide the circumferential rotational movement of the rotating ring relative to the fixed ring, and a plurality of latching structures for circumferentially positioning the rotating ring are also arranged between the fixed ring and the rotating ring.

[0009] In the above scheme, the insertion part rotation mechanism for the endoscope includes a rotating ring, an insertion tube and a fixed ring, the fixed ring is arranged between the rotating ring and the insertion tube, the rotating ring and the insertion tube are fixedly connected, the rotating ring rotates through the guidance of the first guide part and the second guide part, the rotation of the rotating ring drives the insertion tube to rotate synchronously, and the rotation of the insertion tube is realized, and a clamping structure for circumferentially positioning the rotating ring is also arranged between the fixed ring and the rotating ring, so that the rotating ring can remain stable when it rotates to a predetermined position. The insertion part rotation mechanism for the endoscope provided by the utility model has a simple structure, and the insertion tube can be driven to rotate by only rotating the rotating ring, and the insertion tube can be stably maintained at a predetermined rotation angle by setting the clamping structure, and the rotation angle of the insertion tube is easier to adjust.

[0010] Optionally, the first guide portion includes an elastic member and a ball, both ends of the elastic member are respectively connected to the fixed ring and the ball, and the second guide portion includes a guide ring groove arranged on the inner circumferential wall of the rotating ring, and the ball can slide along the guide ring groove.

[0011] In the above scheme, by setting the first guide part as an elastic member and a ball and setting the second guide part as a guide ring groove, the ball can always abut against the inside of the guide ring groove under the action of the elastic member, thereby making the rotational guide connection between the rotating ring and the fixed ring more stable and the guide structure relatively simple.

[0012] Optionally, the locking structure includes a locking groove provided on the inner circumferential wall of the rotating ring for the ball to be locked in, and the depth of the locking groove is greater than the depth of the guide ring groove.

[0013] In the above scheme, the positioning groove is provided so that the ball can be engaged in the positioning groove, thereby achieving relative fixation of the rotating ring and the fixed ring, thereby enabling the insertion tube to work in a stable state.

[0014] Optionally, a mounting column is protruded on the outer peripheral wall of the fixing ring, and a receiving cavity is provided inside the mounting column, and the elastic member is arranged in the receiving cavity.

[0015] In the above scheme, the installation of the elastic member is facilitated by the provision of the installation column and the accommodating cavity thereof, and the elastic member is positioned to prevent the elastic member from collapsing and deforming.

[0016] Optionally, the inner wall protrusion of the rotating ring is provided with an angle limiting protrusion for resisting the ball.

[0017] In the above solution, the angle limiting protrusion is provided to limit the rotation angle of the rotating ring and prevent the rotating ring from rotating excessively.

[0018] Optionally, one end of the fixed ring is radially protruding outward to be provided with an angle indicator, the surface of the angle indicator has a first angle identification portion, and the surface of the rotating ring has a second angle identification portion that cooperates with the first angle identification portion to obtain a rotation angle.

[0019] In the above scheme, by providing the first angle identification portion and the second angle identification portion, the operator can quickly determine whether the angle adjustment of the rotating ring is in place, thereby preventing misjudgment of the angle adjustment.

[0020] Optionally, a fixing collar is further provided between the insertion tube and the rotating ring, and the insertion tube, the fixing collar and the rotating ring are circumferentially fixedly connected.

[0021] In the above scheme, by setting the fixing ring, the insertion tube and the rotating ring are circumferentially fixedly connected, which can make the connection between the two more stable and the assembly easier.

[0022] Optionally, the fixing collar and the insertion tube are fixedly connected by means of screws and / or glue.

[0023] In the above solution, the fixed connection between the fixing ring and the insertion tube is achieved by means of screws and / or glue.

[0024] Optionally, one of the outer circumferential wall of the fixed collar and the inner circumferential wall of the rotating ring is provided with a connecting key extending in the axial direction, and the other is provided with two stop keys extending in the axial direction and arranged at intervals, and the connecting key is inserted between the two stop keys.

[0025] In the above scheme, the fixed collar and the rotating ring can be circumferentially fixed by the cooperation of the connecting key and the stop key, and during assembly, it is only necessary to axially insert the rotating ring into the outer peripheral wall of the fixed collar, which is very convenient to install.

[0026] The utility model also provides a bronchial endoscope, comprising an operating part, an insertion part and the above-mentioned insertion part rotation mechanism for the endoscope, wherein the operating part, the insertion part rotation mechanism for the endoscope and the insertion part are connected in sequence.

[0027] In the above solution, the operating part is fixedly connected to the fixing ring, and the insertion tube is fixedly connected to the insertion part. When the rotating ring rotates, the insertion part can be driven to rotate, thereby changing the direction of the distal end of the insertion part. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A three-dimensional structural diagram of an insertion portion rotation mechanism for an endoscope provided in an embodiment of the utility model;

[0030] Figure 2 A cross-sectional view of an insertion portion rotation mechanism for an endoscope provided in an embodiment of the utility model Figure 1 ;

[0031] Figure 3 A cross-sectional view of an insertion portion rotation mechanism for an endoscope provided in an embodiment of the utility model Figure 2 ;

[0032] Figure 4 A three-dimensional structural diagram of a fixing ring and a first guide portion provided in an embodiment of the utility model;

[0033] Figure 5 for Figure 4 Side view of the middle structure;

[0034] Figure 6 A three-dimensional structural diagram of a rotating ring provided in an embodiment of the utility model;

[0035] Figure 7 A three-dimensional structural diagram of a fixing collar provided in an embodiment of the utility model;

[0036] Figure 8 A three-dimensional structural diagram of a bronchial endoscope provided in an embodiment of the utility model.

[0037] Among them, the reference numerals in the figure are:

[0038] 10-fixing ring; 11-mounting column; 110-accommodating chamber; 12-first guide part; 121-elastic member; 122-ball; 13-angle indicating part; 131-first angle identification part; 20-rotating ring; 21-guide ring groove; 22-retaining ring part; 23-angle limiting protrusion; 24-second angle identification part; 25-stop key; 26-locking groove; 30-insertion tube; 40-fixing ring; 41-first connecting hole; 42-connecting key; 50-operating part; 60-insertion part. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0041] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the 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.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] In the field of medical surgery, with the development of surgical techniques and models, there has been a gradual transition from traditional open surgery to minimally invasive surgery. Among them, bronchoscopic examination / treatment surgery has also received more and more attention with the development of respiratory endoscopic technology. Bronchoscopy has many advantages such as minimally invasive, fast postoperative recovery, and short hospital stay. In minimally invasive surgery, endoscopic surgery including upper / lower respiratory endoscopes and thoracoscopy has the advantages of less trauma and low risk, and has been increasingly used in clinical practice. For example, bronchial secretion aspiration and BAL (bronchial alveolar lavage), bronchoscopic needle aspiration biopsy, transbronchial-lung biopsy, balloon dilatation and cryotherapy. The insertion part of the endoscope is inserted into the lesion. Therefore, the addition of the rotation function of the insertion part has the following advantages: (1) The bronchoscopist does not need to adopt an unnatural or compressive posture when performing bronchoscopic examination, which helps the doctor to easily select the bronchial branch. The bronchoscopist can return the operating part to a comfortable position while maintaining the position of the insertion tube. (2) It enables the bronchoscopist to achieve precise control of the insertion tube. The operator can change the direction of the insertion tube by operating the rotary control ring instead of the operating part of the bronchoscope. (3) The bronchoscopist can easily adjust the position of the tip of the bronchoscope, which helps to select the bronchus into which the endoscopic diagnostic and therapeutic accessories are inserted.

[0044] However, the current structure for realizing the rotation of the insertion portion is relatively complex and difficult to operate.

[0045] In order to alleviate the above technical problems, the utility model proposes a new insertion part rotation mechanism for endoscope and bronchial endoscope, the insertion part rotation mechanism for endoscope includes a rotating ring 20, an insertion tube 30 and a fixed ring 10, the rotating ring 20 and the fixed ring 10 are fixed to each other, and the insertion tube 30 is driven to rotate by the rotation of the rotating ring 20 relative to the fixed ring 10, a guide structure is provided between the rotating ring 20 and the fixed ring 10 to guide the rotation of the rotating ring 20, and a clamping structure is provided to circumferentially position the rotating ring 20, so that the rotating ring 20 can drive the insertion tube 30 to rotate to a predetermined angle. The structure of the insertion part rotation mechanism for endoscope is relatively simple, and the adjustment operation of the insertion tube 30 is also relatively simple, which is convenient for the operation of the surgeon.

[0046] The insertion portion rotation mechanism for an endoscope provided in an embodiment of the utility model is now described.

[0047] Please also read Figures 1 to 3 The insertion portion rotation mechanism for an endoscope includes a rotating ring 20 , an insertion tube 30 , and a fixing ring 10 .

[0048] When the insertion portion rotation mechanism for the endoscope is working, the fixed ring 10 remains stationary, the rotating ring 20 rotates relative to the fixed ring 10, and the rotating ring 20 rotates synchronously with the insertion tube 30 to realize the rotation control of the insertion tube 30. For the convenience of description, the direction of the rotation axis of the rotating ring 20 is referred to as the axial direction, the circumferential direction of the rotating ring 20 is referred to as the circumferential direction, and the radial direction of the rotating ring 20 is referred to as the radial direction.

[0049] The rotating ring 20 and the insertion tube 30 are circumferentially fixedly connected, so that the rotation of the rotating ring 20 drives the rotation of the insertion tube 30. At least part of the fixed ring 10 is arranged between the inner peripheral wall of the rotating ring 20 and the outer peripheral wall of the insertion tube 30, that is, in the radial direction, the rotating ring 20, at least part of the fixed ring 10, and the insertion tube 30 are arranged from the outside to the inside in sequence, and at least part of the outer peripheral wall of the rotating ring 20 is exposed, which is convenient for the surgical staff to directly contact the rotating ring 20 and rotate the rotating ring 20. The insertion tube 30 is arranged inside the rotating ring 20 and the fixed ring 10, and the direction of the insertion tube 30 can be controlled.

[0050] The outer peripheral wall of the fixed ring 10 is provided with a first guide portion 12, and the inner peripheral wall of the rotating ring 20 is provided with a second guide portion. The first guide portion 12 and the second guide portion cooperate with each other to guide the circumferential rotation of the rotating ring 20 relative to the fixed ring 10. When the rotating ring 20 is rotated, the first guide portion 12 and the second guide portion always cooperate with each other, so that the rotating ring 20 rotates relative to the fixed ring 10 in the circumferential direction, and the stability of the movement of the rotating ring 20 and the insertion tube 30 is maintained. At the same time, a plurality of clamping structures for circumferentially positioning the rotating ring 20 are also provided between the fixed ring 10 and the rotating ring 20. The insertion tube 30 needs to be in a stable state when working, that is, after the rotating ring 20 drives the insertion tube 30 to rotate and adjust the angle of the insertion tube 30, the insertion tube 30 needs to be kept in a relatively fixed state with the fixed ring 10. The setting of the clamping structure can keep the rotating ring 20 and the fixed ring 10 in a relatively fixed state. Specifically, after the rotating ring 20 rotates to a predetermined angle, the locking structure is locked into the inner circumferential wall of the rotating ring 20, so that the rotating ring 20 and the fixed ring 10 remain relatively fixed without external force, and the rotating ring 20 can rotate relative to the fixed ring 10 only under the action of torque. There are multiple locking structures, so that the rotating ring 20 and the insertion tube 30 can have multiple predetermined angles.

[0051] When the rotation angle of the insertion tube 30 needs to be adjusted, the rotating ring 20 is rotated. Under the action of the first guide portion 12 and the second guide portion, the rotating ring 20 rotates stably in the circumferential direction. When rotating to a predetermined angle, the locking structure keeps the rotating ring 20 and the fixed ring 10 relatively fixed. When adjusting the angle next time, force is applied again to rotate the rotating ring 20.

[0052] The insertion portion rotation mechanism for the endoscope in the above embodiment includes a rotating ring 20, an insertion tube 30 and a fixed ring 10, wherein the fixed ring 10 is arranged between the rotating ring 20 and the insertion tube 30, the rotating ring 20 and the insertion tube 30 are fixedly connected, the rotating ring 20 performs a rotational motion through the guidance of the first guide portion 12 and the second guide portion, and the rotation of the rotating ring 20 drives the insertion tube 30 to rotate synchronously, thereby realizing the rotation of the insertion tube 30, and a clamping structure for circumferentially positioning the rotating ring 20 is also arranged between the fixed ring 10 and the rotating ring 20, so that the rotating ring 20 can remain stable when it rotates to a predetermined position. The insertion portion rotation mechanism for the endoscope provided by the utility model has a simple structure, and the insertion tube 30 can be driven to rotate by only rotating the rotating ring 20, and the insertion tube 30 can be stably maintained at a predetermined rotation angle through the setting of the clamping structure, and the rotation angle of the insertion tube 30 is more easily adjusted.

[0053] In some embodiments of the present invention, please refer to Figure 2 , Figure 4 and Figure 5 The first guide part 12 includes an elastic member 121 and a ball 122. The two ends of the elastic member 121 are connected to the fixed ring 10 and the ball 122 respectively. The second guide part includes a guide ring groove 21 arranged on the inner circumferential wall of the rotating ring 20, and the ball 122 can slide in the guide ring groove 21. Among them, one end of the elastic member 121 is connected to the fixed ring 10, which can be understood as one end of the elastic member 121 and the fixed ring 10 abut or are fixedly connected, and the other end of the elastic member 121 is connected to the ball 122, which can be understood as the other end of the elastic member 121 and the ball 122 abut or are fixedly connected. The elastic member 121 and the ball 122 are both arranged on the outer wall of the fixed ring 10. The guide ring groove 21 is annular and is arranged on the inner circumferential wall of the rotating ring 20. At least part of the ball 122 is located in the guide ring groove 21, and under the abutment of the elastic member 121, the ball 122 is in close contact with the guide ring groove 21. When the rotating ring 20 rotates relative to the fixed ring 10 , the guide ring groove 21 rotates. It can be understood that the balls 122 and the guide ring groove 21 move relative to each other, so that the rotating ring 20 can stably rotate relative to the fixed ring 10 under the guidance of the balls 122 and the guide ring groove 21 .

[0054] By setting the first guide part 12 as an elastic member 121 and a ball 122, and setting the second guide part as a guide ring groove 21, the ball 122 can always abut against the inside of the guide ring groove 21 under the action of the elastic member 121, thereby making the rotational guide connection between the rotating ring 20 and the fixed ring 10 more stable and the guide structure relatively simple.

[0055] In some embodiments, the elastic member 121 is a spring, such as a cylindrical spring, a butterfly spring, etc.

[0056] In some embodiments, the ball 122 is spherical, and when the ball 122 and the guide ring groove 21 move relative to each other in the circumferential direction, the ball 122 can rotate on its own, thereby making the rotation of the rotating ring 20 smoother.

[0057] In some embodiments of the present invention, please refer to Figure 2 and Figure 6 The locking structure includes a locking groove 26 provided on the inner circumferential wall of the rotating ring 20 for the ball 122 to be locked in, and the depth of the locking groove 26 is greater than the depth of the guide ring groove 21. The locking groove 26 is for the ball 122 to be locked in. When the rotating ring 20 rotates relative to the fixed ring 10 until the ball 122 approaches the locking groove 26, under the action of the elastic member 121, the ball 122 moves in a direction away from the fixed ring 10, so that the ball 122 is embedded in the locking groove 26. In this way, under the restriction of the ball 122 and the locking groove 26, the rotating ring 20 and the fixed ring 10 are mutually locked and fixed without external force. Among them, the number of the locking structures is multiple, and the number of the locking grooves 26 is also multiple accordingly. The multiple locking grooves 26 are circumferentially spaced on the inner circumferential wall of the rotating ring 20, so that the rotating ring 20 has multiple "locking positions", that is, it can maintain a relatively fixed position with the fixed ring 10. That is to say, during the process of the rotating ring 20 rotating one circle relative to the fixed ring 10 , the ball 122 can be engaged with any of the locking grooves 26 , so that the rotating ring 20 is located at different angular positions.

[0058] By setting the locking groove 26, the ball 122 can be locked in the locking groove 26, so that the rotating ring 20 and the fixed ring 10 are relatively fixed, and then the insertion tube 30 can work in a stable state.

[0059] In some embodiments, the locking groove 26 is arranged on the guide ring groove 21. It can be understood that the locking groove 26 is a groove formed by further recessing the guide ring groove 21 toward the inner wall of the rotating ring 20. Therefore, during the continuous rotation of the rotating ring 20, the ball 122 can directly enter the locking groove 26, which is more convenient for adjusting the angle of the rotating ring 20.

[0060] In some embodiments, the number of the locking grooves 26 is three, four, five, etc., and the locking grooves 26 are evenly spaced in the circumferential direction of the rotating ring 20, so that the rotating ring 20 has multiple "locking positions".

[0061] In some embodiments of the present invention, please refer to Figure 2 and Figure 4The outer peripheral wall of the fixing ring 10 is provided with a mounting column 11 protrudingly, and the interior of the mounting column 11 has a receiving cavity 110, and the elastic member 121 is arranged in the receiving cavity 110. The mounting column 11 is provided by the outer peripheral wall of the fixing ring 10 protruding radially outward, and the elastic member 121 is arranged in the receiving cavity 110 inside the mounting column 11. The cross section of the mounting column 11 can be circular, square, etc., and its specific shape is not limited here. When the elastic member 121 is located in the receiving cavity 110, part of the ball 122 can also be located in the receiving cavity 110, so that the ball 122 is more stable.

[0062] By providing the mounting post 11 and the accommodating cavity 110 , the elastic member 121 can be easily installed and positioned to prevent the elastic member 121 from collapsing and deforming.

[0063] In some embodiments, a sealing technology is used to package the ball 122 and the spring together at the mounting post 11 to prevent the ball 122 and the elastic member 121 from falling off.

[0064] In some embodiments, the connection between the fixing ring 10 and the mounting column 11 is a smooth connection, so that there are fewer stress concentration points at the connection between the fixing ring 10 and the mounting column 11, and the service life of the fixing ring 10 and the mounting column 11 is longer.

[0065] In some embodiments, the accommodating cavity 110 is a cylindrical accommodating cavity, and the elastic member 121 is a cylindrical spring, so that the shapes of the accommodating cavity 110 and the elastic member 121 are adapted to each other, and the elastic member 121 is more stable when compressed.

[0066] In some embodiments of the present invention, please refer to Figure 6 The inner wall protrusion of the rotating ring 20 is provided with an angle limiting protrusion 23 for resisting the ball 122. The angle limiting protrusion 23 is located at the inner wall of the rotating ring 20, and can be specifically arranged at the guide ring groove 21. When the rotating ring 20 rotates to abut against the angle limiting protrusion 23, the rotating ring 20 reaches the limit position.

[0067] By providing the angle limiting protrusion 23 , the rotation angle of the rotating ring 20 can be limited to prevent the rotating ring 20 from excessively rotating.

[0068] In some embodiments, there is one angle limiting protrusion 23, and both sides of the angle limiting protrusion 23 can resist the ball 122. The shape of the angle limiting protrusion 23 can be arc-shaped, and its corresponding central angle is A. Accordingly, the rotation angle of the rotating ring 20 is (360-A) degrees.

[0069] In some embodiments, the number of the angle limiting protrusions 23 is multiple, such as two or three, and the multiple angle limiting protrusions 23 form a limiting assembly, and the two opposite sides of the limiting assembly in the circumferential direction can resist the ball 122. The central angle corresponding to the limiting assembly is A, and accordingly, the rotation angle of the rotating ring 20 is (360-A) degrees.

[0070] In other embodiments of the present invention, the second guide portion includes an elastic member 121 and a ball 122, the two ends of the elastic member 121 are respectively connected to the rotating ring 20 and the ball 122, the first guide portion 12 includes a guide ring groove 21 provided on the inner peripheral wall of the rotating ring 20, and the ball 122 can slide in the guide ring groove 21. Correspondingly, the locking structure is provided on the outer peripheral wall of the fixed ring 10, and the locking structure includes a locking groove 26, and its specific structure can refer to the above embodiment, which will not be repeated here.

[0071] In some embodiments of the present invention, please refer to Figures 1 to 6 , one end of the fixed ring 10 is radially protruding outward and is provided with an angle indicator 13, the surface of the angle indicator 13 has a first angle identification portion 131, and the surface of the rotating ring 20 has a second angle identification portion 24 that cooperates with the first angle identification portion 131 to obtain the rotation angle. The angle indicator 13 is formed by one end of the fixed ring 10 protruding radially outward, wherein the one end of the fixed ring 10 can be the end position of the fixed ring 10, or a position close to its end. Since the angle indicator 13 is provided with the first angle identification portion 131 on its surface, it has at least an exposed setting of the first angle identification portion 131, which is convenient for the operator to observe whether the angle adjustment of the rotating ring 20 is in place. The surface of the rotating ring 20 is provided with a second angle identification portion 24, and at least the part where the second angle identification portion 24 is located is exposed, which is convenient for the operator to observe.

[0072] By providing the first angle identification portion 131 and the second angle identification portion 24 , the operator can quickly determine whether the angle adjustment of the rotating ring 20 is in place, thereby preventing misjudgment of the angle adjustment.

[0073] In some embodiments, there are multiple second angle identification parts 24, and the number of the second angle identification parts 24 can be the same as the number of the locking structures. The multiple second angle identification parts 24 are circumferentially spaced and arranged on the outer circumference of the rotating ring 20. When the rotating ring 20 rotates, each second angle identification part 24 is opposite to the first angle identification part 131 in sequence. When the second angle identification part 24 is opposite to the first angle identification part 131, it means that the rotating ring 20 and the fixed ring 10 are locked in place (the angle is adjusted to the right position).

[0074] Optionally, each second angle identification portion 24 is marked with an angle, so that an operator can easily determine the current angle position of the insertion tube 30 .

[0075] Optionally, both the first angle identification portion 131 and the second angle identification portion 24 have alignment lines, and when the two alignment lines are directly opposite to each other, it represents that the rotating ring 20 and the fixed ring 10 are snapped into place.

[0076] In some embodiments of the present invention, the angle indicator 13, the fixing ring 10 and the mounting post 11 are integrally formed and can be processed by injection molding, so that there is no need to install the three, the structure is simpler, and the assembly process of the insertion part rotation mechanism of the endoscope is also simpler. The angle indicator 13, the fixing ring 10 and the mounting post 11 can be made of materials such as PPSU.

[0077] In some embodiments of the present invention, please refer to Figure 2 , Figure 3 and Figure 7 A fixing collar 40 is also provided between the insertion tube 30 and the rotating ring 20, and the insertion tube 30, the fixing collar 40 and the rotating ring 20 are circumferentially fixedly connected. The fixing collar 40 is provided between the outer circumferential wall of the insertion tube 30 and the inner circumferential wall of the rotating ring 20, and is used to fix the insertion tube 30 and the rotating ring 20 so that the two can move synchronously. The circumferentially fixed connection of the insertion tube 30, the fixing collar 40 and the rotating ring 20 means that the three will not have relative positions in the circumferential direction and can rotate synchronously.

[0078] By providing the fixing collar 40 , the insertion tube 30 and the rotating ring 20 are circumferentially fixedly connected, so that the connection between the two can be more stable and the assembly can be simpler.

[0079] When installing the insertion portion rotation mechanism for an endoscope, firstly, the fixing ring 10 and the fixing collar 40 are sleeved on the outer circumference of the insertion tube 30, and then the rotating ring 20 is sleeved on the outer circumference of the fixing ring 10 and the fixing collar 40, and the rotating ring 20 and the fixing collar 40 form a circumferential fixed connection structure.

[0080] In some embodiments of the utility model, the fixing collar 40 and the insertion tube 30 are fixedly connected by screws and / or glue. The embodiment includes the following three situations: the fixing collar 40 and the insertion tube 30 are fixedly connected by screws; or, the fixing collar 40 and the insertion tube 30 are fixedly connected by glue; or, the fixing collar 40 and the insertion tube 30 are fixedly connected by both screws and glue.

[0081] See also Figure 7 The fixing collar 40 and the insertion tube 30 are fixedly connected by screws. The fixing collar 40 is provided with a first connection hole 41, and the insertion tube 30 is provided with a second connection hole. The screws are arranged through the first connection hole 41 and the second connection hole, so that the fixing collar 40 is fixed to the outer periphery of the insertion tube 30.

[0082] Optionally, there are multiple first connection holes 41 and second connection holes, so that the connection between the fixing ring 40 and the insertion tube 30 is more stable.

[0083] When the fixing collar 40 and the insertion tube 30 are fixedly connected by glue, the inner peripheral wall of the fixing collar 40 and the outer peripheral wall of the insertion tube 30 are adhered and fixed by glue.

[0084] When the fixing collar 40 and the insertion tube 30 are fixedly connected by means of screws and glue at the same time, the fixing collar 40 and the insertion tube 30 have a double guarantee for their fixed connection, and the fixing collar 40 is less likely to move relative to the insertion tube 30 .

[0085] In some embodiments of the present invention, please refer to Figure 6 and Figure 7 One of the outer circumferential wall of the fixed collar 40 and the inner circumferential wall of the rotating ring 20 is provided with a connecting key 42 extending in the axial direction, and the other is provided with two stop keys 25 extending in the axial direction and arranged at intervals, and the connecting key 42 is inserted between the two stop keys 25. Both the connecting key 42 and the stop key 25 are arranged to extend in the axial direction. When the fixed collar 40 and the rotating ring 20 are assembled, the rotating ring 20 is also assembled on the fixed collar 40 in the axial direction, so that the connecting key 42 can be inserted between the two stop keys 25, and the circumferential rotational movement of the fixed collar 40 and the rotating ring 20 is stopped.

[0086] In some embodiments, the connection key 42 is disposed on the outer circumferential wall of the fixed collar 40, and the stop key 25 is disposed on the inner circumferential wall of the rotating ring 20. In some embodiments, the connection key 42 is disposed on the inner circumferential wall of the rotating ring 20, and the stop key 25 is disposed on the outer circumferential wall of the fixed collar 40.

[0087] By the cooperation between the connecting key 42 and the stop key 25, the fixed collar 40 and the rotating ring 20 can be fixed circumferentially. During assembly, it is only necessary to axially insert the rotating ring 20 into the outer peripheral wall of the fixed collar 40, which is very convenient to install.

[0088] In some embodiments, the connecting key 42 and the two stop keys 25 can be defined as a circumferential positioning component, and a plurality of circumferential positioning components can be arranged between the outer circumferential wall of the fixed ring 40 and the inner circumferential wall of the rotating ring 20, and the plurality of circumferential positioning components are arranged circumferentially, and the stop key 25 can be shared between two adjacent circumferential positioning components.

[0089] In some embodiments, see Figure 2, the axial fixing structure of the fixed collar 40, the end of the rotating ring 20 away from the angle indicating portion 13 has a retaining ring portion 22, the retaining ring portion 22 is formed by the end of the rotating ring 20 away from the angle indicating portion 13 extending radially inward, and the insertion tube 30 is arranged through the center of the retaining ring portion 22. One axial end of the fixed collar 40 abuts against the fixed ring 10, and the other axial end abuts against the retaining ring portion 22, so that the fixed collar 40 can be axially fixed.

[0090] See also Figure 8 The utility model also provides a bronchial endoscope, which includes the insertion portion rotation mechanism for endoscope in any of the above embodiments and further includes an operating portion 50 and an insertion portion 60. The operating portion 50, the insertion portion rotation mechanism for endoscope and the insertion portion 60 are connected in sequence, that is, the operating portion 50 and the insertion portion 60 are connected through the insertion portion rotation mechanism. Specifically, the operating portion 50 is fixedly connected to the fixing ring 10, and the insertion tube 30 is fixedly connected to the insertion portion 60. When the rotating ring 20 rotates, the insertion portion 60 can be driven to rotate, and the direction of the end of the insertion portion 60 can be changed.

[0091] The bronchial endoscope provided by the utility model adopts the above-mentioned insertion part rotation mechanism for endoscope, and the insertion part rotation mechanism for endoscope includes a rotating ring 20, an insertion tube 30 and a fixed ring 10, the fixed ring 10 is arranged between the rotating ring 20 and the insertion tube 30, the rotating ring 20 and the insertion tube 30 are fixedly connected, the rotating ring 20 rotates through the guidance of the first guide part 12 and the second guide part, and the rotation of the rotating ring 20 drives the insertion tube 30 to rotate synchronously to realize the rotation of the insertion tube 30, and a clamping structure for circumferentially positioning the rotating ring 20 is also arranged between the fixed ring 10 and the rotating ring 20, so that the rotating ring 20 can remain stable when it rotates to a predetermined position. The insertion part rotation mechanism for endoscope provided by the utility model has a simple structure, and the insertion tube 30 can be driven to rotate by rotating only the rotating ring 20, and the insertion tube 30 can be stably maintained at a predetermined rotation angle by setting the clamping structure, and the rotation angle of the insertion tube 30 is easier to adjust.

[0092] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An insertion portion rotation mechanism for an endoscope, characterized in that: The invention comprises a rotating ring (20), an insertion tube (30) and a fixed ring (10); the rotating ring (20) and the insertion tube (30) are circumferentially fixedly connected; at least a portion of the fixed ring (10) is arranged between the inner circumferential wall of the rotating ring (20) and the outer circumferential wall of the insertion tube (30); the outer circumferential wall of the fixed ring (10) is provided with a first guide portion (12); the inner circumferential wall of the rotating ring (20) is provided with a second guide portion; the first guide portion (12) and the second guide portion cooperate with each other to guide the circumferential rotational movement of the rotating ring (20) relative to the fixed ring (10); and a plurality of positioning structures for circumferentially positioning the rotating ring (20) are also arranged between the fixed ring (10) and the rotating ring (20).

2. The insertion portion rotation mechanism for an endoscope according to claim 1, characterized in that: The first guide portion (12) comprises an elastic member (121) and a ball (122), the two ends of the elastic member (121) being respectively connected to the fixed ring (10) and the ball (122), and the second guide portion comprises a guide ring groove (21) arranged on the inner peripheral wall of the rotating ring (20), and the ball (122) can slide along the guide ring groove (21).

3. The insertion portion rotation mechanism for an endoscope according to claim 2, characterized in that: The locking structure comprises a locking groove (26) arranged on the inner peripheral wall of the rotating ring (20) for the ball (122) to be locked in, and the depth of the locking groove (26) is greater than the depth of the guide ring groove (21).

4. The insertion portion rotation mechanism for an endoscope according to claim 2, characterized in that: The outer peripheral wall of the fixing ring (10) is protruded with a mounting column (11), the interior of the mounting column (11) has a receiving cavity (110), and the elastic member (121) is arranged in the receiving cavity (110).

5. The insertion portion rotation mechanism for an endoscope according to claim 2, characterized in that: The inner wall protrusion of the rotating ring (20) is provided with an angle limiting protrusion (23) for resisting the ball (122).

6. The insertion portion rotation mechanism for an endoscope according to any one of claims 1 to 5, characterized in that: One end of the fixed ring (10) is radially protruding outward and is provided with an angle indicating portion (13), the surface of the angle indicating portion (13) has a first angle identification portion (131), and the surface of the rotating ring (20) has a second angle identification portion (24) that cooperates with the first angle identification portion (131) to obtain a rotation angle.

7. The insertion portion rotation mechanism for an endoscope according to any one of claims 1 to 5, characterized in that: A fixing collar (40) is also provided between the insertion tube (30) and the rotating ring (20), and the insertion tube (30), the fixing collar (40) and the rotating ring (20) are fixedly connected in the circumferential direction.

8. The insertion portion rotation mechanism for an endoscope according to claim 7, characterized in that: The fixing collar (40) and the insertion tube (30) are fixedly connected by means of screws and / or glue.

9. The insertion portion rotation mechanism for an endoscope according to claim 8, characterized in that: One of the outer peripheral wall of the fixed collar (40) and the inner peripheral wall of the rotating ring (20) is provided with a connecting key (42) extending in the axial direction, and the other is provided with two stop keys (25) extending in the axial direction and arranged at intervals, and the connecting key (42) is inserted between the two stop keys (25).

10. A bronchial endoscope, characterized in that: It comprises an operating part (50), an insertion part (60) and an insertion part rotation mechanism for an endoscope according to any one of claims 1 to 9, wherein the operating part (50), the insertion part rotation mechanism for an endoscope and the insertion part (60) are connected in sequence.

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