Snake bone assembly, active bending section, insert and endoscope

Abstract

The present invention discloses a snake bone assembly component, an active bending section, an insertion part and an endoscope, and relates to the technical field of medical devices. The snake bone assembly component at least includes a first rivet and a second rivet, the first rivet is located at the proximal end of the active bending section, the first rivet is fixedly connected to one of the two adjacent snake bone nodes, and is rotatably connected to the other, the second rivet is located at the distal end of the active bending section, the second rivet is fixedly connected to one of the two adjacent snake bone nodes, and is rotatably connected to the other, the first rivet has a first area in contact with the snake bone node at one end of the first rivet rotatably connected to the snake bone node, the second rivet has a second area in contact with the snake bone node at one end of the second rivet rotatably connected to the snake bone node, and the first area is greater than the second area. The snake bone assembly component can enable the active bending section to bend first at the distal end and then at the proximal end, and when used by doctors during surgery, it can not only reduce the difficulty of operation, but also avoid tissue damage.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a snake bone assembly component, an active bending section, an insertion part and an endoscope. Background Art

[0002] An endoscope is a commonly used medical device that can directly enter the human body for examination and provide doctors with sufficient diagnostic information. An endoscope usually includes: an insertion portion for inserting into the human body, a handle for controlling the bending of the front end of the insertion portion, and a display device for displaying the internal environment of the human body's natural cavity.

[0003] The insertion part includes an active bending section and a passive bending section, and the active bending section is located at the distal end of the insertion part. In the related art, the active bending section can be bent by a lever or a knob on the control handle. A camera module is provided at the distal end of the active bending section. After the insertion part is inserted into the human body, the direction of the camera module can be adjusted by bending the active bending section, so that the camera module is aimed at the lesion site to provide diagnosis information for the doctor.

[0004] However, the inventors have discovered that when the active bending segment bends, its proximal end bends before the distal end. This bending method causes the distal end of the active bending segment to sweep a larger area during the bending process. When doctors use it during surgery, if they need to bend the active bending segment to the subrenal calyx end, the operation is difficult. Summary of the invention

[0005] The present invention discloses a snake bone assembly component, an active bending section, an insertion portion and an endoscope, so as to solve the technical problem in the related art that when the active bending section is bent, its distal end sweeps a large area, which makes it difficult for doctors to operate during surgery.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions:

[0007] A first aspect of the present invention provides a snake assembly component.

[0008] The snake bone assembly component of the present invention is applied to the active bending section of the endoscope, and the active bending section includes a plurality of snake bone nodes connected in sequence. The snake bone assembly component includes at least a first rivet and a second rivet, wherein the first rivet is located at the proximal end of the active bending section, the first rivet is fixedly connected to one of the two adjacent snake bone nodes and is rotatably connected to the other, the second rivet is located at the distal end of the active bending section, the second rivet is fixedly connected to one of the two adjacent snake bone nodes and is rotatably connected to the other, and the first rivet at one end of the first rivet rotatably connected to the snake bone node has a first area in contact with the snake bone node, and the second rivet at one end of the second rivet rotatably connected to the snake bone node has a second area in contact with the snake bone node, and the first area is larger than the second area.

[0009] According to an optional embodiment, there are multiple first rivets, and the multiple first rivets have the same first area; there are multiple second rivets, and the multiple second rivets have the same second area.

[0010] According to an optional embodiment, there are multiple first rivets, and the first areas of the multiple first rivets gradually decrease from the proximal end to the distal end; there are multiple second rivets, and the second areas of the multiple second rivets gradually decrease from the proximal end to the distal end.

[0011] According to an optional embodiment, one end of the first rivet fixedly connected to the serpentine joint has a third area in contact with the serpentine joint, and one end of the second rivet fixedly connected to the serpentine joint has a fourth area in contact with the serpentine joint, and the third area is smaller than the fourth area.

[0012] According to an optional embodiment, the proximal end of the snake bone joint has a first connecting piece, the distal end has a second connecting piece, and of the two adjacent snake bone joints at the first rivet, one of the first connecting piece and the second connecting piece is fixedly connected to the first rivet, and the other is rotatably connected to the first rivet; of the two adjacent snake bone joints at the second rivet, one of the first connecting piece and the second connecting piece is fixedly connected to the second rivet, and the other is rotatably connected to the second rivet.

[0013] According to an optional embodiment, one of the first connecting piece and the second connecting piece at the first rivet that is rotatably connected to the first rivet has a first deformation degree, and one of the first connecting piece and the second connecting piece at the second rivet that is rotatably connected to the second rivet has a second deformation degree, and the first deformation degree is greater than the second deformation degree.

[0014] According to an optional embodiment, the thickness of the second connecting piece at the first rivet is smaller than the thickness of the second connecting piece at the second rivet; or the distance between the second connecting piece and the first connecting piece at the first rivet is larger than the distance between the second connecting piece and the first connecting piece at the second rivet; or the second connecting piece includes a sinking portion and a connecting portion, the connecting portion is inclined, the connecting portion is connected to the sinking portion and the snake bone body of the snake bone joint, and the length of the connecting portion at the first rivet is larger than the length of the connecting portion at the second rivet.

[0015] A second aspect of the present invention provides an active bending segment.

[0016] The active bending section of the present invention comprises a plurality of snake bone segments, and the head and tail of two adjacent snake bone segments are connected by the snake bone assembly component described in any one of the technical solutions of the present invention.

[0017] A third aspect of the present invention provides an insertion portion.

[0018] The insertion portion of the present invention comprises an active bending segment and a passive bending segment, wherein the active bending segment is the active bending segment described in any one of the technical solutions of the present invention, and the proximal end of the active bending segment is connected to the distal end of the passive bending segment.

[0019] A fourth aspect of the present invention provides an endoscope.

[0020] The endoscope of the present invention comprises an insertion portion and a handle, wherein the insertion portion is the insertion portion described in any one of the technical solutions of the present invention, and the proximal end of the insertion portion is connected to the handle.

[0021] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0022] The snake bone assembly component of the present invention can rotatably connect two adjacent snake bone joints through the first rivet and the second rivet, and the snake bone joint can rotate when the snake bone joint is subjected to force. Furthermore, the first rivet located at the proximal end of the active bending section is rotatably connected to the snake bone joint, and the first area of ​​contact between the first rivet and the snake bone joint is larger than the second area of ​​contact between the second rivet and the snake bone joint, so that when the active bending section is controlled to bend by the traction rope, the friction resistance generated between the second rivet and the snake bone joint is smaller than the friction resistance generated between the first rivet and the snake bone joint, and the force applied by the traction rope can easily overcome the friction resistance generated between the second rivet and the snake bone joint, so that the distal snake bone joint of the active bending section bends first; as the force applied by the traction rope increases, the friction resistance generated between the first rivet and the snake bone joint can be overcome, so that the proximal snake bone joint of the active bending section bends.

[0023] It can be seen that by utilizing the snake-bone assembly component of the present invention, the distal end of the active bending segment can be bent first and the proximal end can be bent later. This bending method is beneficial to reducing the area swept by the distal end during the bending process of the active bending segment. When used during surgery by doctors, the difficulty of operation can be reduced, thereby solving the technical problem in the related art that when the active bending segment is bent, the distal end sweeps a large area, causing difficulty in operation for doctors during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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.

[0025] Figure 1 is a schematic diagram of an endoscope according to an embodiment of the present application;

[0026] Figure 2 is a schematic diagram of an active bending section in an extended state according to an embodiment of the present application;

[0027] Figure 3 is a partial schematic diagram of the active bending section of an embodiment of the present application;

[0028] Figure 4 yes Figure 3 A magnified view of part A;

[0029] Figure 5 yes Figure 3 A magnified view of part B;

[0030] Figure 6 is a schematic diagram of an active bending section in a bending state according to an embodiment of the present application;

[0031] Figure 7 is a schematic diagram of a bending path when the active bending section of an embodiment of the present application is gradually bent;

[0032] Figure 8 It is a schematic diagram of the snake bone joint of the embodiment of the present application;

[0033] Fig. 9 is a schematic diagram of a first riveted component of an embodiment of the present application;

[0034] Fig.10 It is a schematic diagram of the second rivet member of the embodiment of the present application.

[0035] In the figure: 100, active bending section; 110, snake bone joint; 111, first connecting piece; 111a, first through hole; 112, second connecting piece; 112a, sinking part; 112b, connecting part; 112c, second through hole; 113, snake bone body; 120, first rivet; 121, first base; 122, first head end; 123, first connecting column; 123a, first groove; 130, second rivet; 131, second base; 132, second head end; 133, second connecting column; 133a, second groove; 200, passive bending section; 300, insertion part; 400, handle. DETAILED DESCRIPTION

[0036] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0037] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0038] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of each component relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0039] In the related art, the active bending section includes a plurality of snake bone sections, and a traction rope channel for the traction rope to pass through is provided on the wall surface of each snake bone section, and the traction rope channel is recessed toward the center of the active bending section, and the recessed area is used to install the traction rope. The traction rope passes through each snake bone section, and the distal end of the traction rope is fixed to the distal end of the active bending section; in addition, adjacent snake bone sections are connected by rivets, and when the active bending section is controlled to bend by the traction rope, the force applied needs to overcome the friction between the rivet and the snake bone section to make the active bending section bend.

[0040] However, the inventors found that when the active bending section is controlled to bend by a traction rope, the force applied by the traction rope causes the proximal end of the active bending section to bend first and the distal end to bend later. This bending method results in a larger area swept by the distal end of the active bending section during the bending process. When the doctor uses it during surgery, if it is necessary to bend the active bending section to the subrenal calyx end, the operation is difficult.

[0041] To this end, the present application provides a serpentine assembly component, in which two adjacent serpentine joints at the proximal end of the active bending section are connected by a first rivet, and two adjacent serpentine joints at the distal end are connected by a second rivet, and a first area in contact between the first rivet and the serpentine joint at one end of the first rivet that is rotatably connected to the serpentine joint is larger than a second area in contact between the second rivet and the serpentine joint at one end of the second rivet that is rotatably connected to the serpentine joint. Therefore, when the active bending section is controlled to bend by a traction rope, the distal end of the active bending section can bend first and the proximal end can bend later, which is beneficial to reducing the area swept by the distal end during the bending process of the active bending section and reducing the difficulty of operation.

[0042] The following is combined with Figures 1 to 10 , the snake bone assembly component, active bending section, insertion part and endoscope provided by the present application are described in detail through specific embodiments and their application scenarios.

[0043] The first aspect of this embodiment provides a detailed description of the snake bone assembly component.

[0044] The snake bone assembly component of this embodiment is applied to the active bending section 100 of the endoscope. The active bending section 100 includes a plurality of snake bone segments 110, which are arranged end to end, and two adjacent snake bone segments 110 are connected end to end. Figure 2 The endoscope includes an insertion portion 300 and a handle 400. The insertion portion 300 is used to be inserted into a cavity. The handle 400 is provided with an operating member for the convenience of the doctor to operate. Figure 1 The inserting portion 300 has an active bending section 100 and a passive bending section 200, wherein the active bending section 100 is located at the distal end and the passive bending section 200 is located at the proximal end. Figure 1As shown. The insertion part 300 is also provided with an instrument tube for inserting instruments. The distal end surface of the active bending section 100 is provided with a camera module and other structures. The active bending section 100 can be in a straight state or a bent state under the action of the traction rope, such as Figure 2 or Figure 6 shown.

[0045] The snake bone assembly component of this embodiment includes a first rivet 120, such as Figure 2 or Figure 3 The first rivet 120 is located at the proximal end of the active bending section 100 and is used to connect two adjacent snake bone nodes 110 at the proximal end of the active bending section 100. Figure 2 or Figure 3 As shown. Exemplarily, the first rivet 120 is fixedly connected to one of the two adjacent serpentine joints 110 and is rotatably connected to the other one. Through the action of the first rivet 120, the two adjacent serpentine joints 110 at the proximal end of the active bending section 100 can be rotatably connected.

[0046] The snake bone assembly component of this embodiment includes a second rivet 130, such as Figure 2 or Figure 3 The second rivet 130 is located at the distal end of the active bending section 100 and is used to connect two adjacent snake bone nodes 110 at the distal end of the active bending section 100. Figure 2 or Figure 3 As shown. Exemplarily, the second rivet 130 is fixedly connected to one of the two adjacent serpentine joints 110 and is rotatably connected to the other one. Through the action of the second rivet 130, the two adjacent serpentine joints 110 at the distal end of the active bending section 100 can be rotatably connected.

[0047] Exemplarily, the distal end of the active bending segment 100 and the proximal end of the active bending segment 100 are divided by the middle of the active bending segment 100, and the distal end of the dividing line is the distal end of the active bending segment 100, and the proximal end of the dividing line is the proximal end of the active bending segment 100. Not limited to this, the distal end of the active bending segment 100 and the proximal end of the active bending segment 100 can also be divided in other ways.

[0048] Exemplarily, two adjacent snake bone joints 110 are connected by at least two first rivets 120 or at least two second rivets 130, and the at least two first rivets 120 or at least two second rivets 130 are evenly distributed along the circumferential direction of the snake bone joint 110, such as Figure 3 shown.

[0049] Figure 3 and Figure 4The schematic diagram shows the first rivet 120, which is fixedly connected to the distal snake bone joint 110 and rotatably connected to the proximal snake bone joint 110. Exemplarily, the first rivet 120 is a rivet. Fig. 9 FIG. 1 shows a schematic diagram of the structure of the first rivet 120. Fig. 9 As shown, the first rivet 120 includes a first base 121, a first head end 122, and a first connecting column 123 located between the first base 121 and the first head end 122. Exemplarily, the first rivet 120 may be a split structure, and after two adjacent snake bone joints 110 are assembled on the first connecting column 123, the first head end 122 is fixed on the first connecting column 123.

[0050] Exemplarily, the proximal end of the snake bone segment 110 is provided with a first through hole 111a, and the distal end is provided with a second through hole 112c. Figure 8 The first through hole 111a and the second through hole 112c are installed at the first connecting column 123, so that the two adjacent snake bone nodes 110 are connected by the first rivet 120, as shown in FIG. Figure 4 As shown. Exemplarily, the first connecting column 123 is provided with a first groove 123a, and the first groove 123a is used to install the proximal end of the snake bone segment 110, and the first through hole 111a and the first connecting column 123 are interference-fitted, and / or the first groove 123a and the proximal end of the snake bone segment 110 are interference-fitted, so that the first rivet 120 can be fixedly connected to the distal snake bone segment 110, as shown. Figure 4 and Fig. 9 As shown. Exemplarily, after the second through hole 112c is installed on the first connecting column 123, the second through hole 112c and the first connecting column 123 are clearance-matched, and there is also a clearance between the proximal end of the distal serpentine segment 110 and the distal end of the proximal serpentine segment 110, so that the first rivet 120 can be rotatably connected with the proximal serpentine segment 110, as shown in FIG. Figure 4 shown.

[0051] Without limitation thereto, the first rivet 120 may also be rotatably connected to the distal serpentine joint 110 and fixedly connected to the proximal serpentine joint 110 .

[0052] Figure 3 and Figure 5 The second rivet 130 is shown in a schematic diagram, where the second rivet 130 is fixedly connected to the distal serpentine joint 110 and is rotatably connected to the proximal serpentine joint 110. Exemplarily, the second rivet 130 is a rivet. Fig.10 FIG. 1 shows a schematic diagram of the structure of the second rivet 130. Fig.10As shown, the second rivet 130 includes a second base 131, a second head end 132, and a second connecting column 133 located between the second base 131 and the second head end 132. Exemplarily, the second rivet 130 can be a split structure, after two adjacent snake bone joints 110 are assembled on the second connecting column 133, the second head end 132 is fixed on the second connecting column 133.

[0053] Exemplarily, the proximal end of the snake bone segment 110 is provided with a first through hole 111a, and the distal end is provided with a second through hole 112c. Figure 8 The first through hole 111a and the second through hole 112c are installed at the second connecting column 133, so that the two adjacent snake bone joints 110 are connected by the second rivet 130, as shown in FIG. Figure 5 As shown. Exemplarily, the second connecting column 133 is provided with a second groove 133a, and the second groove 133a is used to install the proximal end of the snake bone segment 110, and the first through hole 111a and the second connecting column 133 are interference-fitted, and / or the second groove 133a and the proximal end of the snake bone segment 110 are interference-fitted, so that the second rivet 130 can be fixedly connected to the distal snake bone segment 110, as shown. Figure 5 and Fig.10 As shown. Exemplarily, after the second through hole 112c is installed on the second connecting column 133, the second through hole 112c and the second connecting column 133 are clearance-matched, and there is also a clearance between the proximal end of the distal serpentine segment 110 and the distal end of the proximal serpentine segment 110, so that the second rivet 130 can be rotatably connected to the proximal serpentine segment 110, as shown in FIG. Figure 5 shown.

[0054] Without limitation thereto, the second rivet 130 may also be rotatably connected to the distal serpentine joint 110 and fixedly connected to the proximal serpentine joint 110 .

[0055] In the snake bone assembly component of this embodiment, the first rivet 120 is rotatably connected to the snake bone joint 110 at one end, and the first rivet 120 has a first area in contact with the snake bone joint 110. The second rivet 130 is rotatably connected to the snake bone joint 110 at one end, and the second rivet 130 has a second area in contact with the snake bone joint 110.

[0056] by Figure 4For example, when the first rivet 120 is fixedly connected to the distal serpentine joint 110 and is rotatably connected to the proximal serpentine joint 110, the first rivet 120 mentioned in this embodiment has a first area in contact with the serpentine joint 110. The first area may refer to the contact area between the first base 121 and the proximal serpentine joint 110; the first area may also refer to the area where the first base 121 can contact the proximal serpentine joint 110 after the proximal serpentine joint 110 is deformed. The contact here may refer to macroscopic contact or microscopic contact. Accordingly, the first area of ​​the first rivet 120 here may refer to the macroscopic contact area between the first base 121 and the serpentine joint 110 or the microscopic contact area between the first base 121 and the serpentine joint 110.

[0057] by Figure 5 For example, when the second rivet 130 is fixedly connected to the distal serpentine joint 110 and is rotatably connected to the proximal serpentine joint 110, the second rivet 130 mentioned in this embodiment has a second area in contact with the serpentine joint 110, and the second area may refer to the contact area between the second base 131 and the proximal serpentine joint 110; the second area may also refer to the area where the second base 131 can contact with the proximal serpentine joint 110 after the proximal serpentine joint 110 is deformed. The contact here may refer to macroscopic contact or microscopic contact. Accordingly, the second area of ​​the second rivet 130 here may refer to the macroscopic area where the second base 131 contacts with the serpentine joint 110 or the microscopic area where the second base 131 contacts with the serpentine joint 110.

[0058] In the snake bone assembly of this embodiment, the first area is larger than the second area. Figure 4 and Figure 5 As shown. The first area is larger than the second area, so that when the active bending section 100 is controlled to bend by the traction rope, the friction resistance generated between the second rivet 130 and the serpentine joint 110 (for example, the friction resistance generated between the first base 121 and the proximal serpentine joint 110) is smaller than the friction resistance generated between the first rivet 120 and the serpentine joint 110 (for example, the friction resistance generated between the first base 121 and the proximal serpentine joint 110), and the force applied by the traction rope can easily overcome the friction resistance generated between the second rivet 130 and the serpentine joint 110, so that the distal serpentine joint 110 of the active bending section 100 is bent first; as the force applied by the traction rope increases, the friction resistance generated between the first rivet 120 and the serpentine joint 110 can be overcome, so that the proximal serpentine joint 110 of the active bending section 100 is bent.

[0059] By utilizing the snake bone assembly component of the present embodiment, the distal end of the active bending section 100 can be bent first and the proximal end can be bent later. This bending method is beneficial to reducing the area swept by the distal end during the bending process of the active bending section 100. When used during surgery by a doctor, for example, when the doctor needs to bend the active bending section 100 from the upper renal calyx to the lower renal calyx, it can not only reduce the difficulty of operation, but also avoid the problem of kidney damage caused by sweeping too large an area during the bending process of the active bending section 100.

[0060] The first area is larger than the second area, so that the friction resistance generated between the first rivet 120 and the snake joint 110 is larger than the friction resistance generated between the second rivet 130 and the snake joint 110. The specific analysis is as follows:

[0061] by Figure 4 and Figure 5 For example, at the first rivet 120, of the two adjacent serpentine joints 110, the distal serpentine joint 110 is fixedly connected to the first rivet 120, and the proximal serpentine joint 110 is rotatably connected to the first rivet 120. The rigidity of the fixed connection between the distal serpentine joint 110 and the first rivet 120 is relatively large, and the serpentine joint 110 is difficult to deform, while the rigidity of the rotatably connected connection between the proximal serpentine joint 110 and the first rivet 120 is relatively small, and the proximal serpentine joint 110 has a certain deformation space; similarly, at the second rivet 130, the distal serpentine joint 110 fixedly connected to the second rivet 130 is difficult to deform, while the proximal serpentine joint 110 rotatably connected to the second rivet 130 has a certain deformation space.

[0062] During the bending process of the active bending section 100 in the cavity, the serpentine joint 110 rotatably connected to the first rivet 120 and the second rivet 130 may be deformed. In addition, the first rivet 120 and the second rivet 130 limit the radial direction of the serpentine joint 110, forcing the proximal serpentine joint 110 to contact the first base 121 and the second base 131 after deformation. The first area is greater than the second area, so that the contact area between the first rivet 120 and the serpentine joint 110 is larger. From a microscopic analysis, the contact area between the first rivet 120 and the serpentine joint 110 is larger, the more microscopic particles on the contact surface contact, the more collisions, and the greater the friction; the contact area between the second rivet 130 and the serpentine joint 110 is smaller, the microscopic particles on the contact surface contact less, the fewer collisions, and the smaller the friction.

[0063] In some embodiments, the number of the first rivet members 120 is multiple, such as Figure 2 As shown. The first areas of the plurality of first rivets 120 are all equal. The number of the second rivets 130 is plural, such as Figure 2As shown. The second areas of the plurality of second rivets 130 are all equal. In the above scheme, the friction resistance generated between each first rivet 120 and the snake bone joint 110 can be equal, and the friction resistance generated between each second rivet 130 and the snake bone joint 110 can be equal, so that the active bending section 100 is a segmented bending mode in which the distal end is prior to the proximal end.

[0064] In some embodiments, there are multiple first rivets 120, and the first areas of the multiple first rivets 120 gradually decrease from the proximal end to the distal end. There are multiple second rivets 130, and the second areas of the multiple second rivets 130 gradually decrease from the proximal end to the distal end. It can be seen that the first area of ​​the first rivet 120 located at the farthest end is the smallest, and the second area of ​​the second rivet 130 located at the closest end is the largest, and the minimum value of the first area is greater than the maximum value of the second area. In the above scheme, the friction resistance generated between each first rivet 120 and the serpentine joint 110 can be gradually reduced from the proximal end to the distal end, and the friction resistance generated between each second rivet 130 and the serpentine joint 110 can also be gradually reduced, so that the active bending section 100 is gradually bent from the distal end to the proximal end. Figure 7 A schematic diagram of the bending path of the active bending section 100 when it gradually bends from the distal end to the proximal end is shown.

[0065] In some embodiments, one end of the first rivet 120 is fixedly connected to the serpentine joint 110 , and the first rivet 120 has a third area in contact with the serpentine joint 110 . Figure 4 The schematic diagram of the first rivet 120 being fixedly connected to the distal serpentine joint 110 is shown, and the third area here refers to the area where the first head end 122 contacts the distal serpentine joint 110. The second rivet 130 is fixedly connected to one end of the serpentine joint 110, and the second rivet 130 has a fourth area in contact with the serpentine joint 110. Figure 5 A schematic diagram showing the fixed connection between the second rivet 130 and the distal serpentine joint 110 is shown, where the fourth area refers to the contact area between the second head end 132 and the distal serpentine joint 110 .

[0066] Similar to the first area and the second area mentioned above, the third area and the fourth area here may refer to the macroscopic contact area or the microscopic contact area.

[0067] In some embodiments, the third area is smaller than the fourth area, such as Figure 4 and Figure 5 As shown. Figure 4 and Figure 5As shown, the first head end 122 is fixedly connected to the distal serpentine joint 110, and the second head end 132 is fixedly connected to the distal serpentine joint 110. Since the first head end 122 and the second head end 132 are fixedly connected to the serpentine joint 110, the third area is smaller than the fourth area, and friction resistance will not be generated here. On the other hand, the third area is smaller than the fourth area, which can make the stiffness of the fixed connection between the first head end 122 and the serpentine joint 110 smaller than the stiffness of the fixed connection between the second head end 132 and the serpentine joint 110. When When the proximal serpentine joint 110 is deformed, the rigidity at the first head end 122 is smaller, which is more conducive to releasing the deformation pressure of the proximal serpentine joint 110. It can not only avoid the problem of breakage of the proximal serpentine joint 110, but also make the deformation degree of the proximal serpentine joint 110 rotatably connected to the first rivet 120 greater, thereby further increasing the contact area between the first base 121 and the proximal serpentine joint 110, so as to further increase the friction resistance generated between the first base 121 and the proximal serpentine joint 110.

[0068] In some embodiments, the proximal end of the snake bone segment 110 has a first connecting piece 111, and the distal end has a second connecting piece 112, such as Figure 8 At the two adjacent snake bone nodes 110 of the first rivet 120, one of the first connecting piece 111 and the second connecting piece 112 is fixedly connected to the first rivet 120, and the other is rotatably connected to the first rivet 120, as shown. Figure 4 At the two adjacent snake bone joints 110 of the second rivet 130, one of the first connecting piece 111 and the second connecting piece 112 is fixedly connected to the second rivet 130, and the other is rotatably connected to the second rivet 130, as shown. Figure 5 As shown. Figure 8 As shown, the first connecting piece 111 is provided with a first through hole 111a, and the second connecting piece 112 is provided with a second through hole 112c. Passing the first connecting column 123 or the second connecting column 133 through the first through hole 111a and the second through hole 112c can realize the connection between two adjacent snake bone nodes 110.

[0069] In some embodiments, one of the first connecting piece 111 and the second connecting piece 112 at the first rivet 120 rotatably connected to the first rivet 120 has a first degree of deformation. Figure 4 The schematic diagram of the first rivet 120 and the proximal serpentine joint 110 being rotatably connected is shown, and the first degree of deformation here refers to the degree of deformation of the second connecting piece 112 at the first rivet 120. The first connecting piece 111 and the second connecting piece 112 at the second rivet 130, one of which is rotatably connected to the second rivet 130, has a second degree of deformation. Figure 5A schematic diagram showing the rotational connection between the second rivet 130 and the proximal serpentine joint 110 is shown. The second deformation degree here refers to the deformation degree of the second connecting piece 112 at the second rivet 130 .

[0070] In some embodiments, the first deformation degree is greater than the second deformation degree. That is, the second connecting piece 112 at the first rivet 120 is easy to deform, and the second connecting piece 112 at the second rivet 130 is not easy to deform. When the active bending section 100 is bent, since the second connecting piece 112 at the first rivet 120 is easy to deform, the contact area between the first base 121 and the proximal serpentine joint 110 can be further increased, so as to further increase the friction resistance generated between the first base 121 and the proximal serpentine joint 110.

[0071] In some embodiments, the thickness of the second connecting piece 112 at the first rivet 120 is less than the thickness of the second connecting piece 112 at the second rivet 130. Figure 4 and Figure 5 As shown, that is, L 11 <L 12 Since the thickness of the second connecting piece 112 at the first rivet 120 is relatively small, the deformation degree of the second connecting piece 112 at the first rivet 120 is relatively large, and the second connecting piece 112 is easy to deform; on the other hand, the thickness of the second connecting piece 112 at the first rivet 120 is relatively small, and when the second connecting piece 112 is deformed, the stress can be effectively released to prevent the second connecting piece 112 or the first rivet 120 from being broken.

[0072] In some embodiments, the distance between the second connecting piece 112 and the first connecting piece 111 at the first rivet 120 is greater than the distance between the second connecting piece 112 and the first connecting piece 111 at the second rivet 130. Figure 4 and Figure 5 As shown, that is, L 21 >L 22 Due to the distance between the second connecting piece 112 and the first connecting piece 111 at the first rivet 120, the deformation probability and deformation degree of the second connecting piece 112 at the first rivet 120 can be increased, so that the second connecting piece 112 at the first rivet 120 is easy to deform.

[0073] In some embodiments, the second connecting piece 112 includes a sinking portion 112a and a connecting portion 112b. Figure 8 The connecting portion 112b is tilted and connected to the sinking portion 112a and the snake bone body 113 of the snake bone joint 110. Figure 8As shown. Exemplarily, the second connecting piece 112 and the snake bone body 113 are an integral structure, and the first connecting piece 111 and the snake bone body 113 are also an integral structure. The length of the connecting portion 112b at the first rivet 120 is greater than the length of the connecting portion 112b at the second rivet 130. Figure 4 and Figure 5 As shown, that is, L 31 >L 32 Since the length of the connecting portion 112b at the first rivet 120 is longer, the distance between the sinking portion 112a and the serpentine body 113 is longer, and the rigidity of the connection between the second connecting piece 112 and the serpentine body 113 is smaller, so that the deformation degree of the second connecting piece 112 at the first rivet 120 is larger, and the second connecting piece 112 is easy to deform.

[0074] Not limited to this, other methods may also be used to achieve that the first deformation degree is greater than the second deformation degree.

[0075] The second aspect of this embodiment provides a detailed description of the active bending section.

[0076] The active bending section of this embodiment includes a plurality of snake bone nodes 110, such as Figure 2 The head and tail of two adjacent snake bone segments 110 are connected by a snake bone assembly component of any technical solution in this embodiment, such as Figure 2 As shown, under the pulling force of the traction rope, the snake bone segment 110 can rotate, and the active bending section can switch between the bending state and the straight state.

[0077] The active bending segment of this embodiment connects two adjacent snake bone nodes 110 through the snake bone assembly component of any one of the technical solutions in this embodiment, so that when the active bending segment 100 of this embodiment is bent, a bending mode in which the distal end of the active bending segment 100 bends first and the proximal end bends later can be formed, which is beneficial to reducing the area swept by the distal end during the bending process of the active bending segment 100, and can reduce the difficulty of operation when used by doctors during surgery.

[0078] The third aspect of this embodiment describes the insertion portion in detail.

[0079] The insertion portion of this embodiment includes an active bending section 100, such as Figure 1 The active bending section 100 is the active bending section of any technical solution in this embodiment. The insertion portion of this embodiment also includes a passive bending section 200, the distal end of the passive bending section 200 is connected to the proximal end of the active bending section 100, as shown in FIG. Figure 1 The structure of the passive bending section 200 may be the same as that in the prior art, and will not be described in detail herein.

[0080] The insertion portion of this embodiment has an active bending segment of any one of the technical solutions in this embodiment. When the active bending segment 100 is bent by controlling the traction rope, the distal end of the active bending segment 100 can be bent first and the proximal end can be bent later. This bending method is beneficial to reducing the area swept by the distal end during the bending process of the active bending segment 100. When used during surgery by doctors, it can reduce the difficulty of operation and the probability of tissue damage.

[0081] The fourth aspect of this embodiment provides a detailed description of the endoscope.

[0082] The endoscope of this embodiment includes an insertion portion 300, such as Figure 1 The insertion part 300 is the insertion part of any technical solution in this embodiment. The endoscope of this embodiment also includes a handle 400, which is connected to the proximal end of the insertion part 300. Figure 1 The handle 400 may be a structure of the prior art, which will not be described in detail herein.

[0083] The endoscope system of this embodiment may be a digestive endoscope, a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. This embodiment does not specifically limit the type of the endoscope system.

[0084] The endoscope of this embodiment has an insertion portion according to any one of the technical solutions of this embodiment, which can reduce the difficulty of operation when used by doctors during surgery and can also reduce the probability of tissue damage.

[0085] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0086] In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0087] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A snake bone assembly component, applied to an active bending section (100) of an endoscope, the active bending section (100) comprising a plurality of snake bone sections (110) connected in sequence, characterized in that: The snake bone assembly component comprises at least a first rivet (120) and a second rivet (130), wherein: The first rivet (120) is located at the proximal end of the active bending section (100), the first rivet (120) is fixedly connected to one of the two adjacent snake bone nodes (110) and is rotatably connected to the other; the second rivet (130) is located at the distal end of the active bending section (100), the second rivet (130) is fixedly connected to one of the two adjacent snake bone nodes (110) and is rotatably connected to the other; and One end of the first rivet (120) is rotatably connected to the snake bone joint (110), the first rivet (120) having a first area in contact with the snake bone joint (110), and one end of the second rivet (130) is rotatably connected to the snake bone joint (110), the second rivet (130) having a second area in contact with the snake bone joint (110), the first area being larger than the second area; One end of the first rivet (120) is fixedly connected to the snake bone joint (110), and the first rivet (120) has a third area in contact with the snake bone joint (110); one end of the second rivet (130) is fixedly connected to the snake bone joint (110), and the second rivet (130) has a fourth area in contact with the snake bone joint (110), and the third area is smaller than the fourth area.

2. The snake bone assembly component according to claim 1, characterized in that: There are a plurality of first rivet members (120), and the first areas of the plurality of first rivet members (120) are all equal; There are a plurality of second rivet members (130), and the second areas of the plurality of second rivet members (130) are all equal.

3. The snake bone assembly component according to claim 1, characterized in that: The number of the first rivet members (120) is plural, and the first areas of the plural first rivet members (120) gradually decrease from the proximal end to the distal end; There are a plurality of second rivets (130), and the second areas of the plurality of second rivets (130) gradually decrease from the proximal end to the distal end.

4. The snake bone assembly component according to claim 1, characterized in that: The snake bone segment (110) has a first connecting piece (111) at its proximal end and a second connecting piece (112) at its distal end, and At two adjacent snake bone nodes (110) at the first rivet (120), one of the first connecting piece (111) and the second connecting piece (112) is fixedly connected to the first rivet (120), and the other is rotatably connected to the first rivet (120); At two adjacent snake bone nodes (110) at the second rivet (130), one of the first connecting piece (111) and the second connecting piece (112) is fixedly connected to the second rivet (130), and the other is rotatably connected to the second rivet (130).

5. The snake bone assembly assembly according to claim 4, characterized in that: One of the first connecting piece (111) and the second connecting piece (112) at the first rivet (120), which is rotatably connected to the first rivet (120), has a first degree of deformation, One of the first connecting piece (111) and the second connecting piece (112) at the second rivet (130) that is rotatably connected to the second rivet (130) has a second degree of deformation, The first deformation degree is greater than the second deformation degree.

6. The snake bone assembly component according to claim 5, characterized in that: The thickness of the second connecting piece (112) at the first rivet (120) is smaller than the thickness of the second connecting piece (112) at the second rivet (130); or The distance between the second connecting piece (112) and the first connecting piece (111) at the first rivet (120) is greater than the distance between the second connecting piece (112) and the first connecting piece (111) at the second rivet (130); or The second connecting piece (112) comprises a sinking portion (112a) and a connecting portion (112b); the connecting portion (112b) is arranged at an angle; the connecting portion (112b) is connected to the sinking portion (112a) and the snake bone body (113) of the snake bone joint (110); and the length of the connecting portion (112b) at the first rivet (120) is greater than the length of the connecting portion (112b) at the second rivet (130).

7. An active bending section, characterized in that: It comprises a plurality of snake bone segments (110), wherein the head and tail of two adjacent snake bone segments (110) are connected via a snake bone assembly component according to any one of claims 1 to 6.

8. An insertion portion, characterized in that: It comprises an active bending segment (100) and a passive bending segment (200), wherein the active bending segment (100) is the active bending segment according to claim 7, and the proximal end of the active bending segment (100) is connected to the distal end of the passive bending segment (200).

9. An endoscope, characterized in that: It comprises an insertion part (300) and a handle (400), wherein the insertion part (300) is the insertion part according to claim 8, and the proximal end of the insertion part (300) is connected to the handle (400).

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