CN214712493U - Snake bone tube - Google Patents

Abstract

A snake bone pipe comprises a plurality of snake bone sections, wherein each snake bone section is provided with a main section body, and each main section body is provided with a concave part and a convex part deviating from the concave part. The snake bone sections are sequentially connected in series, and the adjacent snake bone sections are matched with each other through the insertion of the concave parts and the convex parts, so that when the two adjacent snake bone sections are relatively bent, the bending angle between the two adjacent snake bone sections is adjusted. The middle part of this depressed part is equipped with bellied T shape fixture block, and the middle part of bellying is equipped with the assembly opening, and the bellying of second snake condyle inserts with mobilizable mode in the depressed part that corresponds on the first snake condyle, when first snake condyle and second snake condyle buckle, this T shape fixture block can cooperate with the inner wall of the assembly opening both sides of bellying, makes the conduction of power between first snake condyle and the second snake condyle disperse more evenly, and first snake condyle and second snake condyle relative motion are more smooth and easy and stable.

Description

Snake bone tube

Technical Field

The application relates to a structure of a snake bone pipe.

Background

The flexible insertion part is a controllable bending and swinging part, the bending angle of the insertion part can be freely controlled by an operator, the main parts for realizing free swinging are a snake bone pipe and a control wire, and the snake bone is driven to swing by pulling the control wire.

The snake bone pipe is usually composed of a plurality of same unit sections, adjacent unit sections can be bent mutually, and the bending of the whole snake bone pipe in a certain direction can be realized by overlapping the bending effects of the unit sections so as to achieve the required purpose, such as accurate detection and observation of human body parts.

The prior snake bone tube structure has a plurality of defects, and needs further improvement.

Disclosure of Invention

The application provides a snake bone tube to show a new snake bone tube structure.

In view of the above, an embodiment of the present application provides a snake bone tube, which includes a first bending portion, wherein the first bending portion has a plurality of snake bone segments with cylindrical structures, the snake bone segments are connected in series, and two adjacent snake bone segments are connected in a bendable manner; the snake bone joint is provided with a main joint body, the main joint body is provided with a concave part and a convex part deviating from the concave part, the middle part of the concave part is provided with a convex T-shaped clamping block, the middle part of the convex part is provided with an assembling opening, the convex part of the upper snake bone joint in the two adjacent snake bone joints is movably inserted into the concave part of the lower snake bone joint, and the T-shaped clamping block is movably inserted into the assembling opening; when the two adjacent snake bone joints are bent relatively, the convex part of the upper snake bone joint and the concave part of the lower snake bone joint move relatively, and the T-shaped clamping block can move in the assembling port to adjust the bending angle between the two adjacent snake bone joints.

In one embodiment, the T-shaped fixture block has two first buckles arranged towards two sides, the opening end of the assembling port is provided with a second buckle opposite to the first buckle, and when the protruding portion moves outwards from the recessed portion, the first buckle can be buckled with the second buckle to prevent the protruding portion from falling off from the recessed portion.

In one embodiment, the main joint body has at least two sets of convex portions and concave portions, and the convex portions and the concave portions of the same set are distributed on the same side of the main joint body.

In one embodiment, when the snake bone segments are in a straight arrangement state, the concave parts and the convex parts of the same group are positioned on the same straight line on the same snake bone segment.

In one embodiment, the two sets of protrusions and recesses are distributed oppositely on both sides of the main joint body.

In one embodiment, a relative bending groove is reserved between two adjacent snake bone joints, the bending groove is arranged along the extension of the outer circumference direction of the main joint body, the protruding part of the upper snake bone joint and the recessed part of the lower snake bone joint penetrate through the bending groove and are inserted into the corresponding recessed parts, and when the two adjacent snake bone joints are bent relatively, the bending groove forms an avoiding space.

In one embodiment, the two ends of the bending groove have a corner in the shape of a circular arc.

In one embodiment, the two adjacent snake bone segments are two independent components respectively and are arranged coaxially, a rotating connection structure is arranged between the two adjacent snake bone segments, so that the two adjacent snake bone segments can rotate relatively, and the rotating center line of the two adjacent snake bone segments is perpendicular to the central axis of the snake bone segments.

In one embodiment, the adjacent snake bone segments and the snake bone segments are of an integrally formed structure, and the adjacent two snake bone segments are connected through the elastic arms.

In one embodiment, the bending device further comprises a second bending part connected with the first bending part, the second bending part is provided with a cylindrical main body, the outer peripheral surface of the cylindrical main body is provided with a plurality of stages of first bending grooves and second bending grooves which are alternately arranged along the axial direction of the cylindrical main body, the first bending grooves and the second bending grooves extend along the outer peripheral direction of the cylindrical main body and are staggered with each other by a set angle, and the first bending grooves and the second bending grooves are used for forming an avoiding space for the cylindrical main body so that the cylindrical main body can be bent.

In one embodiment, two first bending grooves are formed in the same stage and are oppositely distributed on the cylindrical body.

In one embodiment, two second bending grooves located at the same stage are oppositely distributed on the cylindrical body, wherein one second bending groove is located below the middle area of two first bending grooves of the previous stage.

In one embodiment, adjacent first curved grooves and second curved grooves are offset by 90 ° in the outer circumferential direction of the cylindrical body.

In one embodiment, both ends of the first bending groove and the second bending groove have arc-shaped corners.

The snake bone pipe according to the embodiment comprises a plurality of snake bone sections, wherein each snake bone section is provided with a main section body, and each main section body is provided with a concave part and a convex part which is deviated from the concave part. The snake bone sections are sequentially connected in series, and the adjacent snake bone sections are matched with each other through the insertion of the concave parts and the convex parts, so that when the two adjacent snake bone sections are relatively bent, the bending angle between the two adjacent snake bone sections is adjusted. The middle part of this depressed part is equipped with bellied T shape fixture block, and the middle part of bellying is equipped with the assembly opening, and the bellying of second snake condyle inserts with mobilizable mode in the depressed part that corresponds on the first snake condyle, when first snake condyle and second snake condyle buckle, this T shape fixture block can cooperate with the inner wall of the assembly opening both sides of bellying, makes the conduction of power between first snake condyle and the second snake condyle disperse more evenly, and first snake condyle and second snake condyle relative motion are more smooth and easy and stable.

Drawings

FIG. 1 is a perspective view of a snake bone tube structure according to an embodiment of the present application;

FIG. 2 is a perspective view of a portion of a snake condyle mating structure according to one embodiment of the present application;

FIG. 3 is a front view of a portion of a snake condyle mating structure according to one embodiment of the present application;

FIG. 4 is a rear view of a portion of a snake condyle mating structure according to one embodiment of the present application;

FIG. 5 is an expanded view of the structure shown in FIGS. 2-4;

FIG. 6 is an enlarged, fragmentary view of a second bend in an embodiment of the present application;

fig. 7 is a partially enlarged view of the structure of fig. 6 in an expanded state.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

The snake bone pipe can realize bending in certain directions, and can be applied to medical instruments and industrial equipment, such as medical endoscopes, industrial scopes or other industries needing the medical endoscopes and the industrial scopes.

The main improvement of the snake bone pipe in the embodiment lies in the change of the snake bone bending structure, and other structures of the snake bone pipe can refer to other existing snake bone pipe structures. For example, in some embodiments, the snake bone tube may further include a connection end for interfacing with the control handle, a distal-most head end, and a linear body (such as a steel cable) for driving the snake bone tube to bend, in addition to the snake bone segment, and even in some embodiments, the head end of the snake bone tube may be provided with a second bending portion (the snake bone segment assembly may be regarded as a first bending portion), so as to further increase the bending deformation effect of the snake bone tube. In addition, structures for installing the linear bodies can be arranged on the snake bone joints, and the structures can refer to the structures of the existing snake bone pipes.

Referring to fig. 1-5, the present embodiment mainly shows the serpentine bone bending structure in the serpentine bone tube. The snake bone pipe 1 comprises a first bending part 100, and the first bending part 100 comprises a plurality of snake bone joints 110 with cylindrical structures. The sheepbone segment 110 has at least one lumen running through it in its axial direction. After all of the sheepskin segments 110 are assembled, the channels can be connected, with the cooperation of external hoses and the like, to form the desired channels, such as cable channels (for routing cables to provide electrical support or to form light conducting channels (e.g., optical fibers)) or other functional channels.

The snake bone joints 110 in the snake bone tube 1 are arranged in series, and two adjacent snake bone joints 110 are connected in a bendable manner, namely, the two adjacent snake bone joints 110 can be changed in a double-folding manner at the connection position. The bending is typically controlled by pulling on the wire (e.g., steel cord). The angle of bending is limited by the structural design of the two adjacent sheepskin bone segments 110. The bending function of the snake bone tube 1 is formed by overlapping the bending matching structures between all the adjacent snake bone joints 110, so that the bending matching structure between two snake bone joints 110 directly influences the bending effect of the whole snake bone tube 1.

Referring to fig. 1-5, the sheepskin node 110 has a main node body 111, the main node body 111 having a recessed portion 112 and a raised portion 113 opposite the recessed portion 112. Of the two adjacent snake bone segments 110, the convex part 113 of the upper snake bone segment 110 is inserted into the concave part 112 of the lower snake bone segment 110. When the two adjacent snake bone segments 110 are bent relatively, the convex part 113 of the upper snake bone segment 110 and the concave part 112 of the lower snake bone segment 110 move relatively to adjust the bending angle between the two adjacent snake bone segments 110.

The effect of buckling between two adjacent snake condyle 110 can be realized through both rotation connections, also can realize through the elastic material deformation between the two, can also realize through other modes, as long as can guarantee that both can buckle to setting for the direction as required.

The bending direction of the adjacent snake bone segments 110 is the side of the convex part 113, so when two adjacent snake bone segments 110 are bent relatively, the convex part 113 of the upper snake bone segment 110 will move towards the corresponding concave part 112, thereby the adjacent snake bone segments 110 are close to each other.

Further, referring to fig. 1-5, a raised T-shaped latch 114 is disposed in the middle of the recessed portion 112. The middle of the protrusion 113 is provided with a fitting hole 115, and the T-shaped latch 114 is movably inserted into the fitting hole 115. When the first and second serpentine segments 110 and 110 are bent, the protrusion 113 can move in the recess 112 and the T-shaped latch 114 can move in the fitting opening 115 to adjust the bending angle between the first and second serpentine segments 110 and 110.

The two sides of the T-shaped fixture block 114 are respectively matched with the inner wall of the assembling opening 115 of the convex part 113, when the first snake bone joint 110 and the second snake bone joint 110 are bent, the force transmission between the first snake bone joint 110 and the second snake bone joint 110 is more uniformly dispersed, and the relative motion of the first snake bone joint 110 and the second snake bone joint 110 is smoother and more stable.

Further, the T-shaped latch 114 has two first latches 116 disposed towards two sides, and the opening end of the assembling opening 115 is disposed with a second latch 117 opposite to the first latch 116, so that when the protruding portion 113 moves outwards from the recessed portion 112, the first latch 116 can be latched with the second latch 117 to prevent the protruding portion 113 from falling off from the recessed portion 112.

The matching structure of the first buckle 116 and the second buckle 117 can limit the bending angle between the first snake bone joint 110 and the second snake bone joint 110, and avoid the first snake bone joint 110 and the second snake bone joint 110 from being separated from each other due to the fact that the first snake bone joint 110 and the second snake bone joint 110 are bent too much. And too big angle of buckling also can make the radial outside protruding degree of snake bone pipe 1 higher, and then increases the frictional force between snake bone pipe 1 and the hose of cover establishing in snake bone pipe 1 outside, also leads to snake bone pipe 1 to be changeed the rupture easily, consequently leads to snake bone pipe 1 and hose life-span to reduce. The present embodiment can avoid the above problem by the matching structure of the first catch 116 and the second catch 117.

In the snake bone tube 1, all of the snake bone tubes 1 are connected coaxially. For convenience of description, referring to fig. 1-4, the present embodiment is described by taking a state in which all the snake bone tubes 1 are arranged along a straight line (i.e. the snake bone segments 110 of the snake bone tubes 1 are in a straight line shape) as an example, but obviously, the snake bone tubes 1 can also be bent to form a curved state. In the linear arrangement state, the convex portion 113 and the concave portion 112 are arranged substantially on the same straight line, and the straight line corresponds to the bending direction of the snake bone tube 1, that is, the snake bone tube 1 can be bent toward the side where the convex portion 113 and the concave portion 112 are located.

Wherein the snake 1 can be bent in one or more directions, for example more often in two opposite directions, or four-sided. Referring to fig. 1-5, taking the serpentine tube 1 as an example of bending in two opposite directions, therefore, on the same serpentine segment 110, the main segment 111 has at least two sets of convex portions 113 and concave portions 112, i.e., the convex portions 113 and concave portions 112 at the opposite positions are a set. The two sets of convex portions 113 and concave portions 112 are oppositely distributed on both sides of the main joint body 111. On the same snake bone segment 110, the protrusions 113 and the recesses 112 of the same set are distributed on the same side of the main segment body 111. When the snake bone segments 110 are in the straight arrangement, the concave portions 112 and the convex portions 113 of the same set are located on the same straight line on the same snake bone segment 110. The adjacent segments 110 can be bent toward the side of the protrusion 113, so that the entire snake bone tube 1 can be bent toward the side of the protrusion 113.

Referring to fig. 1-5, in an embodiment, when the snake bone tube 1 is bent in one direction, two adjacent snake bone segments 110 are bent in the direction, and the protrusions 113 of the two adjacent snake bone segments 110 on the same side of the bending direction move into the corresponding recesses 112, so that the two adjacent snake bone segments 110 are close to each other on the same side to meet the bending requirement. The convex part 113 of the two adjacent serpentine segments 110, which is located at the side away from the bending direction, moves outward of the corresponding concave part 112, so that the two adjacent serpentine segments 110 are away from each other at the side away from the bending direction, thereby completing the bending requirement.

Further, both of the two adjacent serpentine segments 110 can be used to provide structure for the threading of the filament, and referring to fig. 1, in one embodiment, the main segment 111 is cut with an internal recess 118. The two inner recesses 118 may be disposed oppositely, and both the two inner recesses 118 are recessed along the radial direction of the main segment 111. The concave portion 118 is located between the convex portion 113 and the concave portion 112, and the concave portion 118 has a structure for the linear body to pass through. The structure may be a string hole or other structure.

Furthermore, a bending groove 119 is formed between two adjacent snake bone segments 110, and the bending groove 119 extends along the peripheral direction of the snake bone segments 110. The protrusions 113 pass through the bent grooves 119 and are inserted into the corresponding recesses 112. When two adjacent snake bone segments 110 are bent relatively, the bending groove 119 forms an avoiding space. For example, when two adjacent serpentine segments 110 are bent toward the bending groove 119, the bending groove 119 is formed to allow a space for the two adjacent serpentine segments 110 to be bent and to approach each other. Similarly, when two adjacent sheepskin bone sections 110 are bent to the other side, the space left by the bending groove 119 on the other side allows the two adjacent sheepskin bone sections 110 to be bent and close to each other.

Further, referring to fig. 1-5, in one embodiment, the protrusions 113 and the recesses 112 of different sets are disposed in a staggered manner in the axial direction of the main joint 111. The bending grooves 119 on the same main joint body 111 are also arranged in a staggered manner.

The bending groove 119 may have various shapes, and referring to fig. 1-5, in one embodiment, the two ends of the bending groove 119 have rounded corners 1191. The arc corners 1191 can disperse stress generated by bending to the arc corners 1191 when two adjacent snake bone segments 110 are bent, so as to prevent the bending groove 119 from being broken to a certain extent.

On the other hand, two adjacent snake bone segments 110 in the snake bone tube 1 may be in a split structure or an integrally formed structure. Wherein, can be one or more snake bone pipe 1 for an integral molding structure, also can whole snake bone pipe 1 be integral molding structure.

Specifically, referring to fig. 5, in one embodiment, part or all of the two consecutive segments 110 of the snake bone tube 1 are formed as an integral structure, and the two consecutive segments 110 are connected by the elastic arm 120. The resilient arms 120 are capable of providing resilient deformation when two adjacent snake bone segments 110 are bent to accommodate the bending requirements of the snake bone tube 1.

In another embodiment, the two adjacent sheepskin segments 110 are two separate pieces, which are coaxially disposed. A rotary connecting structure is arranged between two adjacent snake bone segments 110, so that the two adjacent snake bone segments 110 can rotate relatively, and the rotary central line of the rotary connecting structure is perpendicular to the central axis of the two adjacent snake bone segments 110.

The rotary connection structure is realized by arc-shaped bulges and arc-shaped grooves which can be respectively arranged on two adjacent snake bone joints 110, so that the two adjacent snake bone joints can rotate relatively.

In the manufacturing process, the pipe can be cut and formed on a pipe in a laser cutting mode no matter in a split structure or an integral structure. Of course, the manner of making two adjacent snake bone segments 110 is not limited to laser cutting.

On the other hand, referring to fig. 1-7, an embodiment further provides a snake bone pipe 1 including a second bending portion 200. The second bent portion 200 is connected to the first bent portion 100. The second bending part 200 has a cylindrical body 210, and the outer circumferential surface of the cylindrical body 210 is provided with a plurality of stages of first bending grooves 211 and second bending grooves 212 alternately arranged in the axial direction thereof. As shown in fig. 6 or 7, the present embodiment distinguishes the first curved groove 211 and the second curved groove 212 at different heights in the axial direction in stages, and the first curved groove 211 or the second curved groove 212 at the same height (of course, the same height allows a reasonable range of variation) is one stage for the following description.

The first bending groove 211 and the second bending groove 212 are disposed such that the second bending part 200 can be bent and swung to a side where the bending grooves are located. The opening of the bending groove (including the first bending groove 211 and the second bending groove 212) has a size in the axial direction, which can be used to limit the bending angle of the second bending part 200, i.e., the larger the axial opening, the larger the bending angle. Meanwhile, the bending groove is separately arranged on the cylindrical main body 210, and the whole cylindrical main body 210 maintains a cylindrical structure, so that the axial dimension is more stable than that of a spiral structure, and the cylindrical main body cannot be easily stretched in the axial direction.

Further, in the first bending groove 211 or the second bending groove 212 of the same stage, the number of the first bending groove 211 or the second bending groove 212 may be determined as needed, and the number may affect the bending direction of the second bending part 200.

Referring to fig. 6 or 7, in one embodiment, two first bending grooves 211 are disposed at the same stage and are oppositely distributed on the cylindrical body 210. Likewise, in one embodiment, two second bending grooves 212 are disposed at the same stage and are oppositely distributed on the cylindrical body 210, wherein one second bending groove 212 is disposed below the middle region of two first bending grooves 211 at the previous stage. This structure enables the second bending portion 200 to be bent and swung in four directions.

Further, the adjacent first curved groove 211 and second curved groove 212 are shifted by 90 ° in the outer circumferential direction of the cylindrical body 210.

Further, referring to fig. 6 or 7, in an embodiment, the first bending groove 211 and the second bending groove 212 are extended along the outer circumferential direction of the cylindrical main body 210 and are offset from each other by a set angle, and the first bending groove 211 and the second bending groove 212 are used for forming an escape space for the cylindrical main body 210, so that the cylindrical main body 210 can be bent.

Similar to the bending groove 119, referring to fig. 6 or 7, in one embodiment, the first bending groove 211 and the second bending groove 212 have rounded corners 201 at both ends. The arc corner 201 can disperse stress generated by bending to the arc corner 201 when the second bending portion 200 is bent, and can prevent the breakage of the bending groove to some extent.

The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.

Claims (14)

1. The snake bone pipe is characterized by comprising a first bending part, wherein the first bending part is provided with a plurality of snake bone sections with cylindrical structures, the snake bone sections are arranged in series, and two adjacent snake bone sections are connected in a bendable manner; the snake bone joint is provided with a main joint body, the main joint body is provided with a concave part and a convex part deviating from the concave part, the middle part of the concave part is provided with a convex T-shaped clamping block, the middle part of the convex part is provided with an assembling opening, the convex part of the upper snake bone joint in the two adjacent snake bone joints is movably inserted into the concave part of the lower snake bone joint, and the T-shaped clamping block is movably inserted into the assembling opening; when the two adjacent snake bone joints are bent relatively, the convex part of the upper snake bone joint and the concave part of the lower snake bone joint move relatively, and the T-shaped clamping block can move in the assembling port to adjust the bending angle between the two adjacent snake bone joints.

2. A snake bone pipe as claimed in claim 1, wherein said T-shaped clip has two first catches disposed at both sides thereof, and a second catch disposed at an opening end of said fitting opening opposite to said first catch, said first catch being engageable with said second catch when said protrusion is moved outwardly from said recess to prevent said protrusion from falling out of said recess.

3. A snake bone tube as claimed in claim 1, wherein said main segment body has at least two sets of protrusions and depressions, said protrusions and depressions of the same set being distributed on the same side of said main segment body.

4. A snake bone tube according to claim 3 wherein, when said snake bone segments are in alignment, the recesses and protrusions of the same set are in alignment on the same said snake bone segment.

5. A snake bone tube according to claim 3, wherein the two sets of protrusions and recesses are oppositely disposed on either side of the main joint body.

6. A snake bone tube according to claim 1, wherein opposite bending grooves are left between two adjacent snake bone segments, the bending grooves extend along the outer circumference of the main segment body, the convex part of the upper snake bone segment and the concave part of the lower snake bone segment both penetrate through the bending grooves and are inserted into the corresponding concave parts, and when the two adjacent snake bone segments are bent relatively, the bending grooves form an avoiding space.

7. A snake bone tube according to claim 6, wherein both ends of said bending groove have rounded corners.

8. A snake bone pipe according to claim 1, wherein said two adjacent snake bone segments are two separate parts, which are coaxially arranged, and a rotational connection structure is provided between said two adjacent snake bone segments to enable said two adjacent snake bones to rotate relatively, and the rotational center line of said two adjacent snake bone segments is perpendicular to the central axis of said snake bone segments.

9. A snake bone tube according to claim 1, wherein adjacent snake bone segments and snake bone segments are of an integrally formed structure, and adjacent two snake bone segments are connected by a resilient arm.

10. A snake bone tube according to any of claims 1-9, further comprising a second bending part connected to the first bending part, wherein the second bending part has a cylindrical body having a plurality of stages of first and second bending grooves alternately arranged along an axial direction thereof on an outer circumferential surface thereof, the first and second bending grooves are extended along an outer circumferential direction of the cylindrical body and are offset from each other by a predetermined angle, and the first and second bending grooves are used for forming an escape space for the cylindrical body so that the cylindrical body can be bent.

11. A snake bone pipe according to claim 10, wherein there are two first bending grooves located at the same stage, which are oppositely distributed on said cylindrical body.

12. A snake bone pipe according to claim 11, wherein there are two second bending grooves located at the same stage and oppositely distributed on said cylindrical body, wherein one of said second bending grooves is located below the middle region of two first bending grooves at the previous stage.

13. A snake bone tube according to claim 10, wherein adjacent first and second curved grooves are offset by 90 ° in the peripheral direction of said cylindrical body.

14. A snake bone tube according to claim 10, wherein both ends of said first and second curved grooves have rounded corners.

Images