Snake bone assembly and assembling method thereof

Abstract

The invention relates to a snake bone assembly and an assembling method thereof. The snake bone assembly comprises a snake bone cylinder and a plurality of steel wires. According to the snake bone assembly, due to the fact that the rib position grooves are all the through grooves, when the through grooves abut against the two sides in the axial direction of the snake bone cylinder, the bending angle of the position of the snake bone cylinder reaches the limit, and due to the fact that one end of the steel wire is connected with the insertion end of the snake bone cylinder and the other end of the steel wire extends out of the traction hole, abutting against the two sides of the through grooves is achieved from the insertion end to the operation end; therefore, when the traction steel wire is pulled each time, the snake-bone cylinder starts to bend from the insertion end and gradually expands to the operation end, orientation positioning of the insertion end of the snake-bone cylinder is more stable, the situation that the snake-bone cylinder starts to bend from the middle and the insertion end is still in a linear state is avoided, the bending stability of the snake-bone assembly is improved, and the service life of the snake-bone assembly is prolonged. Therefore, the stability of the system of the endoscope in the medical operation process such as an operation is improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a snake bone assembly and an assembly method thereof. Background Art

[0002] An endoscope generally includes a handle, an insertion tube, a snake and a tip. The handle is at the end of the insertion tube close to the operator, and the snake is at the end of the insertion tube away from the operator. The distal end of the snake is connected to the tip and other devices for observation and treatment operations.

[0003] In order to manipulate the endoscope inside the human body, the snake bone is generally controlled by pulling the traction wire through the operating handle to bend and change direction in different directions and limit its bending angle to adjust the direction of the insertion end of the snake bone.

[0004] When the existing plastic snake bone is bent, the bending deformation ribs have the same size, which results in an uncertain starting position of the snake bone under stress bending, thus making the orientation positioning stability and reliability of the snake bone insertion end poor. Summary of the invention

[0005] Based on this, it is necessary to provide a snake bone assembly and its assembly method to address the problem that when the existing plastic snake bone is bent, the bending deformation ribs have consistent sizes, resulting in an uncertain starting position of the snake bone under force bending, thereby making the orientation positioning stability and reliability of the snake bone insertion end poor.

[0006] A snake bone component, the snake bone component has an insertion end and an operation end, the snake bone component includes a snake bone tube and a plurality of steel wires,

[0007] The snake-bone tube has an operation hole extending along its axial direction, and a plurality of traction holes extending along its axial direction are formed on the side wall of the snake-bone tube; the snake-bone tube has a plurality of groups of rib position grooves arranged in sequence along its axial direction, and each group of rib position grooves includes two through grooves symmetrically arranged on both sides of a virtual plane passing through the axis of the snake-bone tube, and the two through grooves in each group of the rib position grooves are arranged at intervals;

[0008] A plurality of the steel wires are passed through the plurality of the traction holes in a one-to-one correspondence, one end of the steel wire is connected to the insertion end of the snake bone tube, and the other end extends out of the traction hole.

[0009] In one embodiment, along the axial direction of the snake tube away from the insertion end, the interval between the two through grooves between each group of the rib grooves gradually expands.

[0010] In one embodiment, the snake bone assembly further includes a plurality of limiting bosses, and the side wall of each through slot is provided with two limiting bosses, and the two limiting bosses in each through slot are arranged opposite to each other along the axial direction of the snake bone tube.

[0011] In one embodiment, along the radial direction of the serpentine tube, the limiting boss gradually shrinks in a direction away from the axis of the serpentine tube.

[0012] In one embodiment, the plurality of traction holes are evenly arranged around the circumference of the snake tube.

[0013] In one embodiment, a plurality of fixing holes are formed on the side wall of the insertion end of the snake-bone tube, and ends of the plurality of steel wires close to the operating end are passed through the plurality of fixing holes in a one-to-one correspondence.

[0014] In one embodiment, a plurality of fixing holes are formed on the side wall of the insertion end of the snake-bone tube, and a steel wire corresponds to two adjacent fixing holes and two adjacent traction holes, with both ends of the steel wire extending out of the opening of the traction hole close to the operating end.

[0015] In one embodiment, the outer wall of the snake-bone tube has a plurality of glue injection grooves, the glue injection grooves are connected to two adjacent fixing holes, the steel wire portion is located in the glue injection grooves, and the glue injection grooves are used for injecting glue to fix the steel wire.

[0016] In one embodiment, a side wall of the glue injection groove is provided with a plurality of tooth grooves along a direction away from the steel wire.

[0017] The present application also provides a method for assembling a snake bone component, which is used to assemble the snake bone component. The method for assembling the snake bone component comprises the following steps:

[0018] Aligning the plurality of steel wires with the plurality of traction holes one by one and passing the steel wires through the traction holes;

[0019] Connecting the end of the steel wire close to the insertion end to the side wall of the snake-bone tube;

[0020] The end of the steel wire facing away from the insertion end is extended out of the traction hole.

[0021] The snake-bone assembly is assembled by the above-mentioned assembling method of the snake-bone assembly. The snake-bone tube is provided with a plurality of groups of rib position grooves arranged in sequence along its axial direction. Each group of rib position grooves includes two through grooves symmetrically arranged along the axial direction of the snake-bone tube. The two through grooves in each group of rib position grooves are arranged at intervals, so the snake-bone tube can be bent toward the opening direction of the through groove. At the same time, since one end of the steel wire is connected to the insertion end of the snake-bone tube and the other end extends out of the traction hole, the operator can pull the traction steel wire at the operating end so that the insertion end of the snake-bone tube bends in the direction of the pulled steel wire. Moreover, since the rib position grooves are all through grooves, when the through grooves are arranged on both sides of the axial direction of the snake-bone tube, When abutting, the bending angle of the snake bone tube at this point reaches the limit, and because one end of the steel wire is connected to the insertion end of the snake bone tube, and the other end extends out of the traction hole, the abutment of the two sides of the through groove is realized from the insertion end to the operating end. Therefore, each time the traction steel wire is pulled, the snake bone tube starts to bend from the insertion end and gradually expands to the operating end, thereby making the orientation and positioning of the insertion end of the snake bone tube more stable, and the situation where the snake bone tube starts to bend from the middle and the insertion end is still in a straight state will not occur, thereby improving the bending stability of the snake bone component, and then improving the stability of the endoscope system during medical operations such as surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG. 1 is a schematic structural diagram of a snake bone assembly according to an embodiment.

[0023] FIG. 2 is an enlarged view of point A in FIG. 1 .

[0024] FIG. 3 is a schematic structural diagram of the snake bone assembly in FIG. 1 from another perspective.

[0025] FIG. 4 is an enlarged view of point B in FIG. 3 .

[0026] FIG. 5 is a cross-sectional view of FIG. 3 .

[0027] FIG. 6 is an enlarged view of point C in FIG. 5 .

[0028] FIG. 7 is an enlarged view of point D in FIG. 5 .

[0029] Description of Figure Numbers:

[0030] 100-Snake bone component;

[0031] 110- snake bone tube; 111- operation hole; 112- traction hole; 113- tendon position groove; 114- through groove;

[0032] 120-Steel wire;

[0033] 130-limiting boss;

[0034] 140-fixing hole;

[0035] 150-glue injection groove; 151-tooth groove;

[0036] 210 - insertion end; 211 - operation end. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0039] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0043] Referring to FIG. 1 and FIG. 3 , FIG. 1 and FIG. 3 show schematic structural diagrams of a snake bone assembly 100 from two perspectives in an embodiment of the present application. The snake bone assembly 100 provided in an embodiment of the present application includes: a snake bone tube 110 and a plurality of steel wires 120 .

[0044] The above-mentioned snake bone assembly 100 has an insertion end 210 and an operation end 211, and the snake bone tube 110 has an operation hole 111 extending along its axial direction, wherein the insertion end 210 is connected to an illumination device and an imaging device, thereby forming an endoscope system, and the cables of the illumination, imaging and other devices pass through the operation hole 111 to the operation end 211, and are connected to power supply, analysis and other equipment. The side wall of the snake bone tube 110 is provided with a plurality of traction holes 112 extending along its axial direction; the snake bone tube 110 is provided with a plurality of groups of rib position grooves 113 arranged in sequence along its axial direction, each group of rib position grooves 113 includes two through grooves 114 symmetrically arranged on both sides of a virtual plane passing through the axis of the snake bone tube 110, and the two through grooves 114 in each group of rib position grooves 113 are arranged at intervals; a plurality of steel wires 120 are passed through the plurality of traction holes 112 in a one-to-one correspondence, one end of the steel wire 120 is connected to the insertion end 210 of the snake bone tube 110, and the other end extends out of the traction hole 112.

[0045] 2 and 4 , during the actual assembly and use of the above-mentioned snake bone assembly 100, firstly, the multiple steel wires 120 are matched one by one with the multiple traction holes 112, and passed through the traction holes 112; the end of the steel wire 120 close to the insertion end 210 is connected to the side wall of the snake bone tube 110; the end of the steel wire 120 away from the insertion end 210 is extended out of the traction hole 112 for the operator to pull and pull. Since the serpentine tube 110 is provided with a plurality of groups of rib grooves 113 arranged in sequence along its axial direction, each group of rib grooves 113 includes two through grooves 114 symmetrically arranged along the axial direction of the serpentine tube 110, and the two through grooves 114 in each group of rib grooves 113 are arranged at intervals, the serpentine tube 110 can bend toward the opening direction of the through grooves 114. At the same time, since one end of the steel wire 120 is connected to the insertion end 210 of the serpentine tube 110 and the other end extends out of the traction hole 112, the operator can pull the traction steel wire 120 at the operating end 211 so that the insertion end 210 of the serpentine tube 110 bends in the direction of the pulled steel wire 120. Moreover, since the rib grooves 113 are all through grooves 114, when the through grooves 114 abut against both sides of the axial direction of the serpentine tube 110, When the traction wire 120 is pulled, the serpentine tube 110 bends from the insertion end 210 and gradually extends to the operating end 211, thereby making the orientation and positioning of the insertion end 210 of the serpentine tube 110 more stable, and the serpentine tube 110 will not bend from the middle while the insertion end 210 is still in a straight line. This improves the bending stability of the serpentine assembly 100, thereby improving the stability of the endoscope system during medical operations such as surgery.

[0046] Referring to Figures 5 to 7, in one embodiment, along the axial direction of the snake bone tube 110 away from the insertion end 210, the interval between the two through grooves 114 between each group of rib grooves 113 gradually expands, such as the interval between the two through grooves 114 at the insertion end in Figure 6 and the interval between the two through grooves 114 at the operating end in Figure 7, so that the interval between the through grooves 114 at the insertion end 210 of the snake bone tube 110 is smaller, and the interval between the through grooves 114 at the operating end 211 of the snake bone tube 110 is larger, the bending angle of the insertion end 210 of the snake bone tube 110 is larger, and along the axial direction of the snake bone tube 110 away from the insertion end 210, the limit of the bending angle of the snake bone tube 110 gradually decreases, so that the entire bending process is bent in sequence from the insertion end 210 to the operating end 211, and finally the operating end 211 is the final bending origin, thereby ensuring the stability of the entire bending process.

[0047] Referring to Figures 2 and 4, in one embodiment, the serpentine assembly 100 also includes a plurality of limiting bosses 130, and each side wall of the through groove 114 is provided with two limiting bosses 130. The two limiting bosses 130 in each through groove 114 are arranged relatively along the axial direction of the serpentine tube 110, so that when the two limiting bosses 130 abut, the serpentine tube 110 reaches the bending limit at this point, so that the abutment of the side wall of the through groove 114 is replaced by the abutment of the limiting boss 130, thereby protecting the structure of the entire serpentine tube 110 and avoiding the damage of the serpentine tube 110 caused by excessive bending angle of the insertion end 210.

[0048] Referring to Figures 2 and 4, in one embodiment, along the radial direction of the serpentine tube 110, the limiting boss 130 gradually shrinks in the direction away from the axis of the serpentine tube 110. When the serpentine tube 110 bends, the axial side of the limiting boss 130 close to the serpentine tube 110 is thicker and therefore contacts first. As the serpentine tube 110 continues to bend, the axial thinner side of the limiting boss 130 away from the serpentine tube 110 gradually abuts, so that the limiting boss 130 adapts to the bending process of the serpentine tube 110.

[0049] In one embodiment, a plurality of traction holes 112 are evenly arranged around the circumference of the serpentine tube 110, so that the steel wires 120 extending along the serpentine tube 110 can be evenly arranged around the circumference of the serpentine tube 110, and further, when each steel wire 120 is pulled, the bending direction of the serpentine tube 110 is determined, thereby ensuring the bending stability of the serpentine tube 110.

[0050] In one embodiment, a plurality of fixing holes 140 are provided on the side wall of the insertion end 210 of the snake-bone tube 110, and one end of a plurality of steel wires 120 close to the operating end 211 is correspondingly passed through the plurality of fixing holes 140, so that one end of the steel wire 120 is connected to the insertion end 210 of the snake-bone tube 110 through the fixing hole 140, and the bending of the snake-bone tube 110 is achieved by pulling the traction steel wire 120.

[0051] Referring to Figures 2 and 4, in another embodiment, a plurality of fixing holes 140 are provided on the side wall of the insertion end 210 of the snake bone tube 110, and one steel wire 120 corresponds to two adjacent fixing holes 140 and two adjacent traction holes 112, and both ends of the steel wire 120 extend out of the opening of the traction hole 112 close to the operating end 211. Specifically, the steel wire 120 is inserted from one of the traction holes 112 of the operating end 211 and passes through the corresponding fixing hole 140, thereby passing out of the snake bone tube 110, and then passes through the adjacent fixing hole 140 and then enters the snake bone tube 110 and then passes through the corresponding traction hole 112, and finally passes out of the snake bone tube 110 from the operating end 211, thereby achieving one steel wire 120 passing through each adjacent traction hole 112 in the coming year, and both ends of the steel wire 120 extend out of the traction hole 112 located at the opening of the operating end 211 for the operator to pull and pull.

[0052] Referring to Figures 2 and 4, in one embodiment, the outer wall of the snake bone tube 110 has a plurality of glue injection grooves 150, which are connected to two adjacent fixing holes 140. The steel wire 120 is partially located in the glue injection grooves 150. The glue injection grooves 150 are used to inject glue to fix the steel wire 120, thereby preventing the other end of the steel wire 120 from being pulled into the traction hole 112 when one end of the steel wire 120 is pulled, causing the steel wire 120 to be dislocated.

[0053] 2 and 4 , in one embodiment, a plurality of tooth grooves 151 are provided on the side wall of the glue injection groove 150 in a direction away from the steel wire 120 , thereby increasing the contact area between the glue and the glue injection groove 150 and increasing the resistance between the glue and the glue injection groove 150 , so that the steel wire 120 is fixed more stably.

[0054] The present application also provides an assembly method of a snake bone component 100, which is used to assemble the snake bone component 100. The assembly method of the snake bone component 100 includes the following steps:

[0055] The plurality of steel wires 120 are matched one by one with the plurality of traction holes 112 and passed through the traction holes 112;

[0056] Connect one end of the steel wire 120 close to the insertion end 210 to the side wall of the snake tube 110;

[0057] The end of the steel wire 120 facing away from the insertion end 210 extends out of the pulling hole 112 .

[0058] The snake bone component 100 is assembled by the above-mentioned assembly method of the snake bone component 100. The snake bone tube 110 is provided with a plurality of groups of rib position grooves 113 arranged in sequence along its axial direction. Each group of rib position grooves 113 includes two through grooves 114 symmetrically arranged along the axial direction of the snake bone tube 110. The two through grooves 114 in each group of rib position grooves 113 are arranged at intervals, so that the snake bone tube 110 can bend toward the opening direction of the through grooves 114. At the same time, since one end of the steel wire 120 is connected to the insertion end 210 of the snake bone tube 110 and the other end extends out of the traction hole 112, the operator can pull the traction steel wire 120 at the operating end 211 so that the insertion end 210 of the snake bone tube 110 bends in the direction of the pulled steel wire 120. Moreover, since the rib position grooves 113 are all through grooves 114, when the through grooves 114 are arranged along the snake bone tube 110, When the two axial sides of the bone tube 110 abut against each other, the bending angle of the serpentine bone tube 110 at this point reaches a limit, and because one end of the steel wire 120 is connected to the insertion end 210 of the serpentine bone tube 110, and the other end extends out of the traction hole 112, the abutment of the two sides of the through groove 114 is realized from the insertion end 210 to the operating end 211. Therefore, each time the traction steel wire 120 is pulled, the serpentine bone tube 110 starts to bend from the insertion end 210 and gradually expands to the operating end 211, so that the orientation positioning of the insertion end 210 of the serpentine bone tube 110 is more stable, and the serpentine bone tube 110 will not bend from the middle while the insertion end 210 is still in a straight line, thereby improving the bending stability of the serpentine bone assembly 100, and further improving the stability of the endoscope system during medical operations such as surgery.

[0059] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A snake bone component, the snake bone component having an insertion end and an operating end, It is characterized in that The snake bone assembly includes a snake bone tube and a plurality of steel wires. The snake-bone tube has an operation hole extending along its axial direction, and a plurality of traction holes extending along its axial direction are formed on the side wall of the snake-bone tube; the snake-bone tube has a plurality of groups of rib position grooves arranged in sequence along its axial direction, and each group of rib position grooves includes two through grooves symmetrically arranged on both sides of a virtual plane passing through the axis of the snake-bone tube, and the two through grooves in each group of the rib position grooves are arranged at intervals; A plurality of the steel wires are passed through the plurality of the traction holes in a one-to-one correspondence, one end of the steel wire is connected to the insertion end of the snake bone tube, and the other end extends out of the traction hole.

2. The snake bone assembly according to claim 1, It is characterized in that Along the axial direction of the snake-bone tube away from the insertion end, the interval between the two through grooves between each group of the rib grooves gradually expands.

3. The snake bone assembly according to claim 1, It is characterized in that The snake bone component also includes a plurality of limiting bosses, and the side wall of each through slot is provided with two limiting bosses, and the two limiting bosses in each through slot are arranged opposite to each other along the axial direction of the snake bone tube.

4. The snake bone assembly according to claim 3, It is characterized in that Along the radial direction of the snake-bone tube, the limiting boss gradually shrinks in a direction away from the axis of the snake-bone tube.

5. The snake bone assembly according to claim 1, It is characterized in that The plurality of traction holes are evenly arranged around the circumference of the snake-bone tube.

6. The snake bone assembly according to claim 1, It is characterized in that The side wall of the insertion end of the snake-bone tube is provided with a plurality of fixing holes, and ends of the plurality of steel wires close to the operating end are passed through the plurality of fixing holes in a one-to-one correspondence.

7. The snake bone assembly according to claim 1, It is characterized in that The side wall of the insertion end of the snake-bone tube is provided with a plurality of fixing holes, one steel wire corresponds to two adjacent fixing holes and two adjacent traction holes, and both ends of the steel wire extend out of the opening of the traction hole close to the operating end.

8. The snake bone assembly according to claim 7, It is characterized in that The outer wall of the snake-bone tube has a plurality of glue injection grooves, which are connected to two adjacent fixing holes. The steel wire portion is located in the glue injection grooves, and the glue injection grooves are used for injecting glue to fix the steel wire.

9. The snake bone assembly according to claim 8, It is characterized in that The side wall of the glue injection groove is provided with a plurality of tooth grooves along a direction away from the steel wire.

10. A method for assembling a snake bone component, used for assembling the snake bone component according to any one of claims 1 to 9, It is characterized in that The assembling method of the snake bone assembly comprises the following steps: Aligning the plurality of steel wires with the plurality of traction holes one by one and passing the steel wires through the traction holes; Connecting the end of the steel wire close to the insertion end to the side wall of the snake-bone tube; The end of the steel wire facing away from the insertion end is extended out of the traction hole.

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