CN108553070B

CN108553070B - Controllable bent pipe structure

Info

Publication number: CN108553070B
Application number: CN201810476558.5A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-05-17
Filing date: 2018-05-17
Publication date: 2020-09-18
Anticipated expiration: 2038-05-17
Also published as: CN108553070A; WO2019218947A1

Abstract

The application discloses controllable crooked tubular construction set up connection structure, interval on the pipe wall of two at least directions of the circumference of controllable crooked pipe connection structure set up crooked structure on the pipe wall, connection structure includes along axial staggered arrangement's fluting, adjacent arbitrary two share one side between the fluting the pipe wall, crooked structure is equipped with the crack of arranging along the axial at least, the crack is followed the circumference of pipe wall extends, the fluting with the crack one-to-one is linked together. Any two circumferentially adjacent axial slots of the connecting structure share one side pipe wall, so that the controllable bent pipes are integrally connected without the risk of local falling; meanwhile, the axial grooves are communicated with the cracks forming the bending structure in a one-to-one correspondence mode, the bending degree of the pipe body can be controlled by controlling the displacement degree, and great convenience is provided for operation.

Description

Controllable bent pipe structure

Technical Field

The application relates to the field of medical equipment, in particular to a controllable bending pipe structure.

Background

An endoscope applicable to industrial use and medical use is provided with an insertion portion to be inserted into a living body or a tube. Generally, in an endoscope having a flexible insertion portion, a controllable bending portion is provided on a distal end side of the insertion portion. The bending portion can perform a bending operation in accordance with an operation of an operation device provided in the operation portion. Therefore, in the endoscope having the bending portion, the direction of the observation portion provided at the distal end portion can be directed in a desired direction by the operation device.

In the invention patent document CN201580047959.3, an endoscope apparatus is provided that has a bending tube with enhanced resistance to external forces, including pulling, bending, and twisting, applied to a plurality of bending pieces formed to be connected by laser drawing. In order to achieve the above object, a bending tube according to an embodiment of the present invention includes: a 1 st bending piece for constituting a bendable bending pipe; a 2 nd flexure block for rotation relative to the 1 st flexure block; a link portion formed at the 1 st bending piece and having a rotation shaft for rotating the 2 nd bending piece; an engaging portion formed on the 2 nd bending piece, having a sliding surface that is substantially parallel to the rotation axis and slides relative to the link portion, the engaging portion being rotatably engaged with the link portion; and a receiving portion formed in the vicinity of the link portion in the 1 st bending piece, the receiving portion having a vertical surface that is formed in a direction substantially perpendicular to the rotation axis, the vertical surface being capable of abutting against the engaging portion when the engaging portion engaged with the link portion rotates.

However, in the bending tube structure provided in the above document, the connection structure of each bending block or tube segment constituting the bending tube is a notch and a protrusion which are mutually clamped, the opening direction of the notch is consistent with the axial direction of the bending tube, and the protrusion is clamped into the notch along the axial direction of the bending tube to connect each bending block or tube segment in series.

Disclosure of Invention

The application discloses controllable crooked tubular construction set up connection structure, interval on the pipe wall of two at least directions of the circumference of controllable crooked pipe connection structure set up crooked structure on the pipe wall, connection structure includes along axial staggered arrangement's fluting, adjacent arbitrary two share one side between the fluting the pipe wall, crooked structure is equipped with the crack of arranging along the axial at least, the crack is followed the circumference of pipe wall extends, the fluting with the crack one-to-one is linked together.

In a possible implementation manner, the directions of any two adjacent slotted joints and corresponding gaps are different.

In a possible implementation manner, the connection structure including slots staggered in the axial direction specifically includes: the connecting structure comprises 2N slots which are staggered along the axial direction, wherein the 2N slots comprise N slot pairs, and each slot pair comprises a first slot and a second slot.

In one possible implementation, the first slot and the second slot are centrosymmetric; or the first open slot and the second open slot are both in a hook shape, and the first open slot and the second open slot are arranged in an eight-diagram shape.

In one possible implementation, the N slots are arranged at equal intervals.

In a possible implementation manner, one or more openings are arranged on the pipe wall between any two adjacent cracks, and the openings extend along the circumferential direction of the pipe wall.

In a possible implementation, the shape of the opening is strip-like or oval.

In a possible implementation manner, the bending device further comprises a control device for controlling the controllable bending tube to bend, and the control device comprises one or more traction wires.

In a possible implementation manner, the control device further includes one or more fixing portions disposed on the tube wall and used for fixing the traction wire, and the fixing portions are uniformly distributed in the circumferential direction of the tube wall.

According to the controllable bent pipe structure, any two circumferentially adjacent axial grooves of the connecting structure share one side pipe wall, so that the controllable bent pipe is integrally connected without the risk of local falling; meanwhile, the pipe wall on the other side of the axial slotting is provided with a cutting seam, and the cutting seam is communicated with a crack forming a bending structure, so that a bending space required for bending the pipe body is provided, the bending degree of the pipe body is controlled by controlling the displacement degree, great convenience is provided for operation, and high practical value is achieved.

In order to make the aforementioned and other objects of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

The present application will now be described with reference to the accompanying drawings.

FIG. 1 is a schematic view showing an example of the overall structure of a bending controllable pipe according to an embodiment of the present application;

FIG. 2 is an enlarged, partial schematic view of a controllable bend tube in one direction according to an embodiment of the present application;

FIG. 3 is a general schematic view of the bending state of a controllably bendable tube in an embodiment of the present application;

FIG. 4 is a partially enlarged view illustrating a bending state of a controllably bendable tube in an embodiment of the present application;

FIG. 5 is an enlarged, partial schematic view of another aspect of a controllably bendable tube according to an embodiment of the present application;

FIG. 6 is a schematic enlarged view of a portion of another direction of a controllably bendable tube according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein.

It should be noted that, in the present application, the upper, lower, left and right in the drawings are regarded as the controllable bending pipe and the upper, lower, left and right thereof described in the present specification.

It should also be noted that in the present application, and/or at least three relationships are indicated. For example, a and/or B may represent a alone, B alone, or a and B.

Example embodiments of the present application will now be described with reference to the accompanying drawings, however, the present application may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present application and to fully convey the scope of the present application to those skilled in the art. No limitations are intended to the details of construction or design herein shown, other than as described in the claims below. In the drawings, the same units/elements are denoted by the same reference numerals.

Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.

FIG. 1 is a schematic diagram of an example of a controllably curved tube in accordance with an embodiment of the present application. The controllably bent tube structure is adapted for use with the insertion portion.

As shown in fig. 1, a connection structure is disposed on a pipe wall of at least two directions in a circumferential direction of the controllably bent pipe 100, and a bent structure is disposed on the pipe wall spaced from the connection structure.

The connecting structure comprises slots 110 which are staggered in the axial direction, and any two adjacent slots 110 share one side of the pipe wall 101. The bending structure is at least provided with axially arranged slits 120, and the slits 120 extend along the circumferential direction of the pipe wall. The slots 110 and the slits 120 are in one-to-one correspondence.

Specifically, any two adjacent slots 110 share a side wall 101, i.e., the tube 1011 connects the controlled bending tube 100 axially without a break, thereby making the controlled bending tube 100 a whole. The bending structures of the controllably bendable tube 100 are spaced apart from the connecting structures and include at least a slit 120, the slit 120 providing bending space for the controllably bendable tube 100.

In this embodiment, the connection structures are disposed in at least two circumferential directions of the controllable bending pipe 100, the connection structures are used to connect the controllable bending pipe 100 as a whole, so as to prevent the controllable bending pipe 100 from locally falling off, and the interval connection structures are used to set the bending structures, so as to provide bending space for the controllable bending pipe to bend in a desired direction under the condition that the connection of the parts of the controllable bending pipe 100 as a whole is ensured. The slots 110 and the slits 120 cooperate to satisfy the deformation space required by the bending of the pipe body, thereby increasing the flexibility and smoothness of the bending deformation of the controllable bending pipe 100. The slots 110 are in one-to-one correspondence with the slits 120, and this structure can further provide a deformation space for bending the pipe body.

Further, the structure of the controllably bent tube 100 in the present embodiment is simple. For example, the laser cutting or other processes can be used for machining and forming, the machining cost is low, and the yield is high. The material of the tube wall is preferably a metal material, such as sus304 and sus316, or a nickel titanium alloy. Or non-metallic materials such as nylon, Polyurethane (PU), thermoplastic polyurethane elastomer rubber (TPU), polyvinyl chloride (PVC), thermoplastic elastomer (TPE), etc

Optionally, the direction of connecting the corresponding slits 120 by any two adjacent slots 110 is different.

Specifically, the different directions of any two adjacent slots 110 connecting the corresponding slits 120 can be understood as follows: any two adjacent slots 110 are respectively connected with different ends of the corresponding crack 120.

For example, assuming that slot #1 and slot #2 are two adjacent slots, slot #1 is connected to the gap # a, and slot #2 is connected to the gap # b, where slot #1 connects the left end of the gap # a and slot #2 connects the right end of the gap # b.

The directions of any two adjacent slots connected with the corresponding crack are different, so that the bending structure has better stability on the premise of being capable of being flexibly bent.

Optionally, the connection structure including the slots 110 staggered in the axial direction may specifically include: as shown in fig. 2, the connecting structure includes 2N slots 110 staggered in the axial direction, wherein the 2N slots include N slot pairs, and each slot pair includes a first slot 111 and a second slot 112.

Specifically, the slot 110 includes a first slot 111 and a second slot 112, and it can be considered that two sets of connecting structures are oppositely arranged in the circumferential direction of the controlled bending pipe. Meanwhile, two groups of bending structures can be oppositely arranged at intervals, and fig. 2 is a partially enlarged schematic view of one direction of the controllable bending pipe according to the embodiment of the application. As shown in fig. 2, when the controlled bending pipe 100 is bent, the slit 120 of one bending structure is large and drives the slots 110 on both sides of the slit 120 to provide the tensile deformation space required for bending the pipe body, and correspondingly, the slit 120 of the other bending structure opposite to the bent structure is small to provide the compressive deformation space required for bending the pipe body, and all the above changes are generated in opposite directions when the controlled bending pipe is bent to the other side, so that the controlled bending pipe 100 in this embodiment can be bent in two directions. Fig. 3 and 4 are schematic views of the bending state of the controllably bendable tube in the embodiments of the present application, in whole and in part. As shown in fig. 3 and 4, the slots 110 in the two sets of connection structures are bent and deformed, the axes of the slots are changed into arcs, and the wall of one side shared by any two slots connects the whole controllable bending pipe 100 into a whole, so as to prevent a local pipe body from falling off when the controllable bending pipe 100 is bent, and provide stability for pipe body connection.

Further, the structure of the first and second slots may include one of a variety of configurations.

Alternatively, the first slot 111 and the second slot 112 are symmetrical with respect to the center.

As another alternative example, the first slot 111 and the second slot 112 are both in a "hook" shape, and the first slot 111 and the second slot 112 are arranged in an "eight diagrams" shape. The shape design is attractive in appearance, the connection stability can be guaranteed, meanwhile, the bending control of the controllable bending pipe can be flexibly carried out, and the operation is simple, convenient and fast.

Optionally, the N slots are arranged at equal intervals.

Specifically, the N slots are arranged at equal intervals, which is beneficial to the controllable bending pipe 100 to perform equal-force deformation in each direction, and is beneficial to the operation of an operator.

Optionally, one or more openings 130 are provided on the pipe wall between any two adjacent slits 120, and the openings 130 extend along the circumferential direction of the pipe wall.

As shown in fig. 5, two elongated openings 130 are disposed between any two adjacent slits 120, and the two elongated openings 130 are parallel to each other, so that the openings 130 can further provide a space for bending the pipe body, increase an angle range of controllable bending of the pipe body, enhance flexibility of the pipe body, and reduce weight and manufacturing cost of the pipe body.

FIG. 5 is an enlarged partial view of another direction of a controllably bendable tube according to an embodiment of the present application. As shown in fig. 5, the opening 130 may have various shapes such as a stripe shape or an oval shape.

As can be seen from the above, the connection structure is provided on the pipe wall in at least two directions of the circumferential direction of the controlled bending pipe 100. Further alternatively, provided that the connection structures are provided on the tube wall in both directions of the circumference of the controllably bent tube 100, the two connection structures may be symmetrical structures. FIG. 6 is an enlarged partial schematic view of another direction of a controllably bendable tube according to an embodiment of the present application. As shown in fig. 6, the second slot 112 and the second slot 112' are symmetrical.

In the above, a controllably bent tube structure according to an embodiment of the present application is described. Further optionally, in order to enable a user to better control the controllable bending device, in the following, a control device according to an embodiment of the application is described.

Specifically, the control device is preferably one or more traction wires, and is used for controlling the controllable bending tube 100 to bend towards one or more directions, when an external force is applied to the traction wires, that is, the traction wires are pulled, the tube wall fixedly connected with the traction wires can be driven to move, at this time, the axis of the slot 110 of the tube wall is gradually bent into an arc line, and after the axis of the slot 110 of the tube wall is bent to a maximum position, the traction wires are continuously pulled, and the adjacent tube wall can be continuously driven to continuously rotate, so that the whole bending device is bent; after the bending device is bent to the desired angle by the user, the external force applied to the bending device is removed and the pull wire is fixed, so that the bending device is kept in the bending position.

Alternatively, the pulling portion is preferably a steel wire, but is not limited thereto, and the pulling portion may have any filament-like structure, and any metal or nonmetal material may be used for the filament-like structure.

In order to better fit the pull wire to the bending device and prevent the pull wire from moving inside the controlled bending tube 100, which would affect the bending effect, in one embodiment of the invention, one or more fixing portions for fixing the pull wire may be further provided on the tube wall. In one embodiment of the present invention, it may be preferable to provide one or two pull wires as the control device 200 inside the steerable bending tube 100 to allow the steerable bending device to bend in one or two directions. Further, in this embodiment, when the plurality of fixing portions are disposed on the tube wall, the plurality of fixing portions are uniformly distributed on the circumference of the tube wall, so as to ensure that the bending device can be bent in all directions.

Further, the fixing portion may be a circular tube fixedly connected to the inner wall of the controlled bending tube 100, or a wire groove formed on the inner wall of the controlled bending tube 100. The traction wire is fixed through the fixing part, so that the failure of the controllable bending device caused by the slippage of the traction wire can be prevented. The controllable bending device can bend the pipe section group by using the control part according to the requirements of users, can bend towards any direction required by the users, and is flexible and convenient. While the above provides a preferred means of controlling the controllably bendable tube, it will be appreciated by those skilled in the art that a variety of means or devices for controlling the bending of the controllably bendable tube in a desired direction may be practiced, and are not limited to the means provided in the preferred embodiment.

In summary, in the controllable bending pipe structure according to the invention, any two circumferentially adjacent axial through holes of the connection structure share a pipe wall on one side, so that the controllable bending pipe is integrally connected without risk of local falling; meanwhile, the pipe wall on the other side of the axial through hole is provided with a cutting seam, and the cutting seam is communicated with a crack forming a bending structure, so that a bending space required for bending the pipe body is provided, the bending degree of the pipe body is controlled by controlling the displacement degree, great convenience is provided for operation, and high practical value is achieved.

Furthermore, the above-described embodiments of the present invention are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes be made by those skilled in the art without departing from the spirit and technical spirit of the present invention, and be covered by the claims of the present invention.

Claims

1. A structure of a controllable bending pipe is characterized in that connecting structures are arranged on pipe walls in at least two directions of the circumferential direction of the controllable bending pipe (100), bending structures are arranged on the pipe walls which are spaced from the connecting structures,

the connecting structure comprises slots (110) which are staggered along the axial direction, any two adjacent slots (110) share one side of the pipe wall (101),

the bending structure is at least provided with crack (120) arranged along the axial direction, the crack (120) extends along the circumferential direction of the pipe wall,

the slots (110) are communicated with the gaps (120) in a one-to-one correspondence manner;

the connecting structure comprises slots (110) which are staggered along the axial direction, and specifically comprises the following components: the connecting structure comprises 2N slots (110) which are staggered along the axial direction, wherein the 2N slots comprise N slot pairs, and each slot pair comprises a first slot (111) and a second slot (112);

the first open slot (111) and the second open slot (112) are centrosymmetric, the first open slot (111) and the second open slot (112) are both C-shaped, and the first open slot (111) and the second open slot (112) are buckled in a staggered manner.

2. A controllably bent tube structure according to claim 1, characterized in that any two adjacent slots (110) connect to corresponding slits (120) in different directions.

3. A controuably curved tubular structure according to claim 1, wherein said N slots are equally spaced.

4. A structure according to any of the claims 1, wherein one or more openings (130) are provided in the pipe wall between any two adjacent slits (120), said openings (130) extending in the circumferential direction of the pipe wall.

5. A controllably bent tube structure according to claim 4, characterized in that the shape of the opening (130) is strip-like or oval.

6. A controuably curved tube structure according to claim 1, further comprising a control device for controlling the bending of the controuably curved tube, said control device comprising one or more pull wires.

7. The structure of claim 6, wherein the control device further comprises one or more fixing portions disposed on the tube wall for fixing the traction wires, and the fixing portions are uniformly distributed along the circumference of the tube wall.