CN219021096U

CN219021096U - Snake bone, active bending section, insertion part and endoscope

Info

Publication number: CN219021096U
Application number: CN202222877211.6U
Authority: CN
Inventors: 戴永义
Original assignee: Hunan Vathin Medical Instrument Co Ltd
Current assignee: Hunan Vathin Medical Instrument Co Ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-05-16
Anticipated expiration: 2032-10-31

Abstract

The utility model relates to the technical field of endoscopes, in particular to a snake bone, an active bending section, an inserting part and an endoscope, wherein the snake bone is formed by spirally winding a strip, and comprises a plurality of first spiral units and second spiral units which are connected end to end and are arranged in a staggered manner, the diameters of the first spiral units and the second spiral units are the same, and the side wall of the first spiral unit is concavely formed into two first traction rope mounting grooves which are distributed at two ends in the radial direction of the first traction rope mounting grooves; the snake bone is the integrative structure that the strip spiral coiled and formed, can adopt coiling mode machine-shaping, has the characteristics of simple processing technology and low in production cost, is separated by the second spiral unit at two adjacent first haulage rope mounting grooves of snake bone axial direction, can reduce the setting number of first haulage rope mounting groove on the one hand, reduces the production degree of difficulty, also can reduce the wearing of haulage rope simultaneously and establish the degree of difficulty, and the first haulage rope mounting groove that the strip is sunken to form has good restraint effect to the haulage rope, makes the bending directivity of snake bone better.

Description

Snake bone, active bending section, insertion part and endoscope

Technical Field

The utility model relates to the technical field of endoscopes, in particular to a snake bone, an active bending section, an insertion part and an endoscope.

Background

The endoscope is a medical instrument which stretches the insertion part into the human body, and observes the internal tissues of the human body through the camera module at the distal end of the insertion part, so that doctors can be helped to judge the pathological change position and the tissue structure characteristics of the pathological change position in the patient.

In the related art, an endoscope comprises an operation handle and an insertion part, wherein a snake bone is arranged at the far end of the insertion part, a plurality of snake bone units are usually adopted for riveting the snake bone, or a complex hollow structure is formed by cutting an integrated tube, and the operation handle and the insertion part have the characteristics of complex processing technology, low production efficiency, high production cost and inconvenient connection of a traction rope, so that the manufacturing cost and the use cost of the endoscope are high.

Disclosure of Invention

In view of the above, it is desirable to provide a snake bone, an active bending section, an insertion section, and an endoscope.

In order to solve the problems, the utility model adopts the following technical scheme:

in a first aspect, an embodiment of the present application provides a snake bone, where the snake bone is formed by spirally winding a strip, and the snake bone includes a plurality of first spiral units and second spiral units that are connected end to end and are staggered, where diameters of the first spiral units and the second spiral units are the same; wherein:

the side wall of the first spiral unit is concaved inwards to form two first traction rope mounting grooves, and the two first traction rope mounting grooves are distributed at two ends of the radial direction of the first spiral unit.

In a second aspect, embodiments of the present application disclose an active bending section comprising an outer layer and the aforementioned snake bone, wherein the outer layer is wrapped on the outer side of the snake bone.

In a third aspect, embodiments of the present application disclose an insertion portion comprising an insertion tube and the aforementioned active bending section connected at the distal end of the insertion tube.

In a fourth aspect, embodiments of the present application disclose an endoscope comprising the aforementioned insertion portion.

The technical scheme adopted by the utility model can achieve the following beneficial effects:

the first snake bone is an integrated structure formed by spirally winding the strip, can be processed and formed in a winding mode, and has the characteristics of simple processing technology and low production cost compared with the traditional snake bone which is manufactured by adopting technologies such as cutting, welding, riveting and the like, and can obviously reduce the manufacturing cost and the use cost of the endoscope;

the second spiral units are separated by the second spiral units, and the first spiral units are concaved inwards to form first traction rope mounting grooves, so that compared with the arrangement mode that the first traction rope mounting grooves are formed in the first spiral units and the second spiral units, the shaping number of the first traction rope mounting grooves is reduced while the snake bones can be bent towards the preset direction, and the production efficiency of the snake bones is improved; in addition, when the traction ropes are installed, the first traction rope installation grooves which are arranged at intervals reduce the threading times of the traction ropes, and the threading difficulty of the traction ropes is reduced;

the first traction rope mounting groove and the second traction rope mounting groove formed by recessing the belt materials have proper widths in the axial direction of the snake bone, so that a good constraint effect is achieved on the traction rope, and the bending directivity of the snake bone is better; meanwhile, when the active bending section is formed by coating the outer layer on the outer side of the snake bone, the coating effect of the outer layer on the belt material is better, wrinkles are not easy to form when the active bending section is bent, and the consistency of the active bending section is better.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is one of the structural schematic diagrams of a snake bone according to the embodiments of the application;

FIG. 2 is a second schematic view of a snake bone according to the embodiment of the application;

FIG. 3 is a schematic view of a snake bone penetrating rope according to an embodiment of the application;

FIG. 4 is a schematic structural view of an active bending section according to an embodiment of the present application;

fig. 5 is an enlarged partial schematic view at a in fig. 4.

In the figure:

100-snake bones, 110-first spiral units, 111-first traction rope mounting grooves, 112-second traction rope mounting grooves and 120-second spiral units; 200-an outer layer; 300-hauling rope.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the utility model, the 'near end' and the 'far end' are far and near positions of the structure relative to human body operation under the use environment, so that the description of the position relationship among the components is convenient, and meanwhile, the understanding is convenient; the "proximal" and "distal" are relative positional relationships, not absolute.

The snake bone, the active bending section, the insertion section and the endoscope provided in the embodiments of the present application will be described in detail below with reference to fig. 1 to 5 by way of specific embodiments and application scenarios thereof.

Referring to fig. 1 to 5, the embodiment of the present application provides a snake bone 100, wherein the snake bone 100 is formed by spirally winding a strip material, and the width direction of the strip material is the axial direction of the snake bone 100, that is, in a non-closed spiral tube structure formed by winding the strip material, one side surface of the strip material forms an inner wall of the spiral tube structure, and the other side surface of the strip material forms an outer wall of the spiral tube structure.

In this embodiment of the present application, the snake bone 100 includes a plurality of first spiral units 110 and second spiral units 120 that end to end and crisscross set up, and the diameter of first spiral units 110 is the same with the diameter of second spiral units 120, and wherein, the lateral wall indent of first spiral units 110 forms two first haulage rope mounting groove 111, and two first haulage rope mounting groove 111 distribute at the both ends of first spiral units 110 radial direction, after two first haulage rope mounting groove 111 set up haulage rope 300, can realize the bending of snake bone 100 in two directions.

It should be noted that, in the embodiment of the present application, the sidewall of the second spiral unit 120 does not form any concave structure, and when the traction rope 300 is threaded into the first traction rope installation groove 111, the traction rope 300 is exposed relative to the first spiral unit 110 and hidden relative to the second spiral unit 120, and the first spiral unit 110 and the second spiral unit together play a constraint role on the traction rope 300.

In the prior art, the snake bone is usually formed by riveting or welding a plurality of snake bone units, or is formed by cutting and hollowing out a pipe, so that the manufacturing of the snake bone has the characteristics of complex process, low production efficiency and high production cost, and the manufacturing cost and the use cost of the endoscope are both relatively high.

Meanwhile, in each snake bone unit of the snake bone, corresponding traction rope 300 mounting holes are formed, so that on one hand, the processing difficulty of the snake bone unit is increased, and on the other hand, when the traction rope 300 is mounted, the traction rope 300 needs to sequentially penetrate through each traction rope 300 mounting hole, and meanwhile, the connection difficulty of the traction rope 300 is also increased.

In the technical scheme of this application embodiment, the snake bone is the integrative structure that the strip spiral coiled and forms, when production, only need adopt the coiling mode machine-shaping that is similar to the spring, the punching press forms after the coiling shaping first haulage rope mounting groove 111 can, manufacturing process is simple, can show the manufacturing cost who reduces the snake bone, and then reduces the manufacturing cost and the use cost of endoscope.

In addition, based on the interval action of the second spiral unit 120 on the first traction rope mounting grooves 111 distributed along the axial direction of the snake bone 100, the number of the first traction rope mounting grooves 111 can be reduced, the processing steps can be simplified, the threading times of the traction rope 300 can be reduced, the threading difficulty of the traction rope 300 is reduced, and the assembly efficiency of the endoscope is improved.

Because snake bone 100 is the spiral structure that the strip was wound to form, compare with the spiral structure that the wire winding formed, when cladding skin 200 formed initiative bending section, skin 200 was superior to the wire obviously to the cladding effect of strip, is difficult for forming the fold when initiative bending section takes place to bend for initiative bending section also can have better bore uniformity when bending, is difficult for taking place to warp and subside.

In order to improve flexibility of bending the snake bone, in a further technical solution, the side wall of the first spiral unit 110 is concavely formed into two second traction rope mounting grooves 112, the two second traction rope mounting grooves 112 are distributed at two ends of the radial direction of the first spiral unit 110, and the distribution direction of the two second traction rope mounting grooves 112 is perpendicular to the distribution direction of the two first traction rope mounting grooves 111. With this design, after the two second traction rope mounting grooves 112 are provided with the traction ropes 300, bending of the snake bone 100 in four directions can be achieved.

In an alternative embodiment, in the axial direction of the snake bone 100, the width of the first traction rope mounting groove 111 and the width of the second traction rope mounting groove 112 are both the same as the width of the first screw unit 110, that is, the width of the first traction rope mounting groove 111 and the width of the second traction rope mounting groove 112 are equal to the strip width a; with the arrangement, when the first traction rope mounting groove 111 and/or the second traction rope mounting groove 112 are formed, only one stamping is needed at the corresponding position, and compared with a processing mode that the strip material is locally recessed in the axial direction of the snake bone 100 and a notch is needed to be formed in advance, the production process is simplified, and the production cost is reduced.

In a further technical solution, referring to fig. 4 and 5, the width a of the strip is greater than the spiral distance b of the snake bone 100, so that the coating effect of the outer layer 200 on the snake bone 100 can be further improved when the active bending section of the endoscope is formed, and bending wrinkles generated in the active bending section can be further avoided.

In this embodiment, the spiral angle of the first spiral unit 110 may be the same as or different from the spiral angle of the second spiral unit 120, and in general, in order to achieve bidirectional bending or four-way bending of the snake bone 100, the first spiral angle of the first spiral unit 110 is 360 °; and the second spiral angle of the second spiral unit 120 is N times of the first spiral angle, N is a positive integer greater than or equal to 1, so as to ensure the consistency of the circumferential distribution of the first traction rope installation grooves 111 and/or the second traction rope installation grooves 112 on two adjacent first spiral units 110 in the snake bone 100, thereby realizing bending along the preset direction and avoiding twisting of the spiral structure.

In an alternative embodiment, referring to FIG. 1, the second helix angle is twice the first helix angle; it should be noted that, in the embodiment of the present application, the second spiral angle may be adaptively designed to adjust the interval between two axially adjacent first traction rope mounting grooves 111, so that the snake bone 100 is ensured to have relatively excellent bending performance, and convenience in assembling the traction rope 300 can be improved.

Referring to fig. 2 and 3, the first traction rope installation groove 111 and the second traction rope installation groove 112 are arc grooves recessed inward, and the maximum width of the arc grooves is the same as the diameter of the traction rope 300; on the one hand, the arc-shaped groove is convenient for stamping forming, on the other hand, after the first traction rope installation groove 111 and the second traction rope installation groove 112 are used for installing the traction rope 300, the groove wall of the arc-shaped groove and the inner wall of the second spiral unit 120 jointly play a constraint role on the traction rope 300, so that the radial movable space of the traction rope 300 is limited, and the bending directivity of snake bones is better.

The embodiment of the application also discloses an active bending section, which comprises an outer layer 200 and the snake bone 100, wherein the outer layer 200 is coated on the outer side of the snake bone 100. Based on the coating effect of the outer layer 200 on the snake bone 100, the snake bone 100 is difficult to be compressed and deformed in the axial direction and is easy to be bent and deformed in the direction when the traction rope 300 is pulled.

In this embodiment, the outer layer 200 may be a heat-shrinkable tube, and the outer layer 200 may cover the snake bone 100 in a thermoplastic manner and form a closed channel on the periphery, and functional components of the endoscope, such as an instrument tube, a cable connecting the camera module and the illumination module, may be disposed through the closed channel. It should be noted that the outer layer 200 may be at least one of PE, TPU, PU, PTFE, PEBAX, LDPE, HDPE, PE, EVA, PVC, PET materials, which is not limited herein.

The embodiment of the application also discloses an insertion part which comprises an insertion tube and the active bending section, wherein the active bending section is connected to the distal end of the insertion tube.

The embodiment of the application also discloses an endoscope, which comprises the insertion part.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model.

Claims

1. The snake bone (100) is formed by spirally winding a strip, the snake bone (100) comprises a plurality of first spiral units (110) and second spiral units (120) which are connected end to end and are arranged in a staggered mode, and the diameters of the first spiral units (110) and the second spiral units (120) are the same; wherein:

the side wall of the first spiral unit (110) is concaved inwards to form two first traction rope mounting grooves (111), and the two first traction rope mounting grooves (111) are distributed at two ends of the first spiral unit (110) in the radial direction.

2. The snake bone according to claim 1, wherein the side wall of the first screw unit (110) is concavely formed with two second traction rope mounting grooves (112), the two second traction rope mounting grooves (112) are distributed at two ends of the radial direction of the first screw unit (110), and the distribution direction of the two second traction rope mounting grooves (112) is perpendicular to the distribution direction of the two first traction rope mounting grooves (111).

3. The snake bone according to claim 2, characterized in that in the axial direction of the snake bone (100), the width of the first traction rope mounting groove (111) and the width of the second traction rope mounting groove (112) are both the same as the width of the first screw unit (110).

4. A snake bone according to claim 3, characterised in that the width of the strip is greater than the helical pitch of the snake bone (100).

5. The snake bone according to any of claims 1-4, wherein the second helix angle of the second helix unit (120) is N times the first helix angle of the first helix unit (110), N being a positive integer greater than or equal to 1.

6. The snake bone according to any of claims 2-4, wherein the first traction rope mounting groove (111) and the second traction rope mounting groove (112) are each inwardly recessed arcuate grooves.

7. Snake bone according to claim 6, characterised in that the maximum width of the arc-shaped groove is the same as the diameter of the endoscope pull cord in the radial direction of the first screw unit (110).

8. An active bending section, characterized by comprising an outer layer (200) and a snake bone (100) according to any of claims 1-7, said outer layer (200) being wrapped around the outside of said snake bone (100).

9. An insertion portion comprising an insertion tube and the active bending section of claim 8 attached to a distal end of the insertion tube.

10. An endoscope comprising the insertion portion according to claim 9.