CN118648851B - Active bending section, insertion portion and endoscope - Google Patents
Active bending section, insertion portion and endoscope Download PDFInfo
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- CN118648851B CN118648851B CN202411131871.7A CN202411131871A CN118648851B CN 118648851 B CN118648851 B CN 118648851B CN 202411131871 A CN202411131871 A CN 202411131871A CN 118648851 B CN118648851 B CN 118648851B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
- A61B1/0055—Constructional details of insertion parts, e.g. vertebral elements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
- A61B1/0052—Constructional details of control elements, e.g. handles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
- A61B1/0057—Constructional details of force transmission elements, e.g. control wires
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
- A61B1/008—Articulations
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Abstract
The invention provides an active bending section, an inserting part and an endoscope, and relates to the technical field of endoscopes, wherein the active bending section comprises a snake bone body and a first bag body, and the snake bone body is provided with a plurality of snake bone joints which are mutually hinged; the invention has the advantages that compared with the prior art, the insertion part of the endoscope is convenient to control to enter the body cavity, and the bending operation of the snake bone body is not influenced after the expansion part of the first bag is shrunken, and the invention is convenient to control the softness degree of the active bending section and protect the snake bone body.
Description
Technical Field
The invention relates to the technical field of endoscopes, in particular to an active bending section, an insertion part and an endoscope.
Background
Endoscopes are often applied to aspects of examination, operation and the like of the digestive tract, the respiratory tract, the genitourinary system, different types of endoscopes are needed in different application scenes, such as gastroscopes and enteroscopes for the digestive tract system, bronchoscopes for the respiratory tract system, cystoscopes for the genitourinary system and the like.
Currently, the insertion portion of an endoscope is mainly divided into two types of hard and soft. The insertion part of the rigid endoscope is made of a rigid material, and the insertion is easy to operate, but the rigid insertion part is difficult to pass through a tortuous cavity due to the irregular shape of the abdominal wall of a patient during insertion, so that a doctor is inconvenient to operate, the adaptability is poor, in contrast, the flexible endoscope is wider in clinical application, because the flexible insertion part can adapt to the irregular shape of the tortuous cavity, and the insertion process of the insertion part of the flexible endoscope is poor in operability.
Disclosure of Invention
The application provides an active bending section, an insertion part and an endoscope, which aim to solve the problem of poor operability of the insertion process of the insertion part of a soft endoscope.
In a first aspect, the present application provides an active bending section, which adopts the following technical scheme:
an active bending section comprises a snake bone body, wherein the snake bone body is provided with a plurality of snake bone joints which are mutually hinged;
the first bag body is arranged on one side of the snake bone body in an extending mode along the axis direction of the snake bone body, and the first bag body is provided with an expansion part;
After the first bag body is configured to be filled with a fluid medium, the expansion part of the first bag body is positioned between two adjacent snake bone joints and expands to occupy the swing gap of the snake bone joints so as to limit the swing amplitude of the two adjacent snake bone joints swinging towards two sides.
Preferably, the first capsule body is arranged along the circumferential extension of the snake bone body;
and/or the first capsules are provided with a plurality of first capsules, and all the first capsules are uniformly distributed along the circumference of the snake bone body.
Preferably, the first bag body is laid on the inner side or the outer side peripheral wall of the snake bone body, and the expansion part comprises an extension section and an anchoring section;
When the first bag body is arranged on the outer side wall of the snake bone body, the expansion section expands to occupy the swing gap between two adjacent snake bone sections and is abutted against the end surfaces of the two adjacent snake bone sections, the anchoring section expands to be abutted against the inner side wall surfaces of the two adjacent snake bone sections, and meanwhile, the projection of the first bag body along the axial direction of the snake bone body is positioned on the outer side of the projection of the traction rope along the axial direction of the snake bone body;
when the first capsule is on the inner side wall of the snake bone body, the expansion section expands to occupy the swing gap between two adjacent snake bone sections and is abutted to the end faces of the two adjacent snake bone sections, the anchoring section expands to be abutted to the outer side wall faces of the two adjacent snake bone sections, and meanwhile, the projection of the first capsule along the axial direction of the snake bone body is located on the outer side of the projection of the traction rope along the axial direction of the snake bone body.
Preferably, the device further comprises a connecting pipe and a squeezing part, wherein the distal end of the connecting pipe is communicated with the first bag body, and the squeezing part is movably connected with the connecting pipe and can move between a first position and a second position relative to the axial direction of the connecting pipe;
in the case of the first position, the connecting pipe is in a conducting state;
Under the condition of the second position, the extrusion part extrudes the connecting pipe, the position of the connecting pipe extruded by the extrusion part is flattened, so that the connecting pipe is in a closing state, meanwhile, a closed space is formed between the first bag body and the connecting pipe, and the expansion part of the first bag body is in a full expansion state.
Preferably, the pressing portion is movable in an axial direction thereof with respect to the connection pipe to a third position between the first position and the second position;
In the case of the third position, the position of the extrusion part extruding the connecting pipe is flattened to enable the connecting pipe to be in a closed state, meanwhile, a closed space is formed between the first bag body and the connecting pipe, and the expansion part of the first bag body is in a second expansion state lower than the first expansion state;
When the extrusion part moves from the third position to the second position, the extrusion part can push and inject the fluid medium in the connecting pipe into the first bag body more so as to increase the expansion degree of the expansion part of the first bag body.
Preferably, a syringe is arranged at the other end of the connecting pipe, and the syringe is filled with a fluid medium;
And/or one side of the connecting pipe is communicated with a branch pipe, and the branch pipe is obliquely arranged towards the proximal end of the connecting pipe.
In a second aspect, the present application provides an insertion portion, which adopts the following technical scheme:
an insertion portion comprising a passive bending section, an active bending section as claimed in any one of the preceding claims, a distal end of the passive bending section being connected to a proximal end of the active bending section.
In a third aspect, the present application provides an insertion portion, which adopts the following technical scheme:
An insertion part comprises a passive bending section and an active bending section according to any one of the above schemes, wherein the distal end of the passive bending section is connected with the proximal end of the active bending section, the passive bending section is provided with a second bag body along the axial direction in a fitting way, and the connecting pipe is respectively communicated with the second bag body and the first bag body or is sequentially communicated with the connecting pipe, the second bag body and the first bag body.
Preferably, the second bladder body is at least partially spirally extended along the axial direction of the passive bending section.
In a fourth aspect, the present application provides an endoscope, which adopts the following technical scheme:
An endoscope comprising a handle and an insertion portion according to any of the preceding aspects, the proximal end of the passive bending section being connected to an operating handle.
The invention has the following advantages and beneficial effects:
According to the invention, the first bag body is arranged along the snake bone body in an extending way, when the insertion part of the endoscope needs to be inserted into the cavity to be inspected of the human abdomen and the insertion part needs to be conveniently inserted into the proper cavity position, the fluid medium is injected into the first bag body, so that the expansion part on the first bag body invades the swing gap between two adjacent snake bone sections, the swing amplitude between the snake bone sections is limited, the expansion part on the first bag body invades the swing gap between the two snake bone sections, the snake bone sections are not easy to bend, the purpose of adjusting the rigidity of the active bending section of the endoscope is achieved, and finally the operation of entering the body cavity is convenient. When the bending of the snake bone body needs to be controlled, so that the snake bone body is convenient to enter a human body cavity, only fluid medium in the first bag body needs to be extracted, or when the expansion part of the first bag body is extruded by adjacent snake bone joints, the fluid medium in the expansion part can be discharged to other areas outside the expansion part, and the snake bone joints can swing normally. Of course, the first bag body has deformation characteristics, so that the normal swing of the snake bone body is not influenced, and meanwhile, the function of controlling the softness of the active bending section and protecting the snake bone body is realized.
Drawings
In order to more clearly illustrate the embodiments of the invention 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 invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view showing the overall structure of an endoscope of the present invention.
Fig. 2 is a schematic view for showing the structure of the snake bone body, the first capsule and the second capsule according to the invention.
Fig. 3 is a schematic view intended to show the structure of the first capsule part of the present invention laid on the snake bone body.
Fig. 4 is a schematic view for showing a structure in which a snake bone body according to the invention is circumferentially extended and distributed by a plurality of first capsules.
Fig. 5 is a schematic view of the structure intended to show the first balloon, the expansion, the extension and the anchoring section of the present invention.
Fig. 6 is a schematic structural view intended to show that the first capsule of the present invention does not comprise an anchoring segment.
Fig. 7 is a schematic view for showing the structure of the pressing part, the connection pipe, and the branch pipe of the present invention.
Fig. 8 is an enlarged view of section a of fig. 7 intended to demonstrate the present invention.
Fig. 9 is a schematic view for showing the structure of the sliding groove and the pressing portion on the handle of the present invention.
Fig. 10 is an enlarged view of section B of fig. 9 intended to demonstrate the present invention.
Fig. 11 is a schematic structural view intended to show the spiral profile of the second bladder of the present invention.
Fig. 12 is a schematic view of a strip-like configuration intended to demonstrate the second bladder of the present invention.
Fig. 13 is a schematic view of a semi-circular configuration intended to demonstrate the second bladder of the present invention.
Fig. 14 is a schematic view for showing the normal bending of the snake bone body after the first balloon of the invention is deflated.
Marked in the figure as:
1. snake bone body, 11, snake bone node;
2. 21, an expansion part, 211, an extension section, 222, an anchoring section;
3. A swing gap;
4. 40 parts of handles, 401 parts of sliding grooves, 401 parts of limiting grooves, 41 parts of passive bending sections, 411 parts of bending pipes, 42 parts of active bending sections, 43 parts of lens holders, 44 parts of traction ropes;
5. The connecting pipe, the branch pipe, the tee joint, the 511 and the plug;
6. extrusion part 61, first position 62, second position 63, third position 64, extrusion roller 641, convex strip 642, rotating shaft;
7. A syringe;
8. And a second bladder.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention 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 elements 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 are not limited to the number of objects, such as 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.
It should be noted that, the endoscope in the embodiment of the present application may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a enteroscope, an otoscope, a nasal scope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc., and the embodiment of the present application does not specifically limit the type of the endoscope.
The fluid medium injected by the injector can be water, oil (such as hydraulic oil), cooling liquid, air, nitrogen, helium and the like.
First, the problem of poor operability of the insertion procedure of the insertion section of the flexible endoscope is solved.
In this regard, the embodiment of the present application provides an active bending section, and referring to fig. 1-14, the active bending section 42 is mainly made of a snake bone body 1 and a skin wrapping outside the snake bone body 1, and the snake bone body 1 includes a plurality of snake bone segments 11 connected in series and hinged to each other.
The first bag body 2 extends along the axial direction of the snake bone body 1 at one side of the snake bone body 1, and the first bag body 2 is positioned between the skin and the snake bone body 1. It should be understood that the first capsule 2 may be located at one side of the snake bone body 1 in the axial direction, specifically, the first capsule 2 may extend from the side of the lens seat 43 or from the side of the passive bending section 41, and in this state, the first capsule 2 is mounted on the snake bone body 1 in a partially wrapped and extended manner, and in the case of inflation of the fluid medium filled in the first capsule 2, the first capsule 2 may play a role in hardening a portion of the snake bone body 1, so that the snake bone body 1 is not easily bent, and the snake bone body 1 is conveniently introduced into the body cavity.
When the medical staff pulls the traction rope 44 to adjust the bending state of the snake bone body 1, the part of the snake bone body 1 which is not covered by the first bag body 2 can be bent normally, and the snake bone body 1 can be guided into according to the actual body cavity scene, so that the snake bone body 1 can be more easily led into the body cavity, and the adaptability of the snake bone body 1 is improved.
It should be noted that when the first bladder 2 is extended from one side of the passive bending section 41 to be mounted on a portion of the snake bone body 1, after the fluid medium is filled into the first bladder 2, the portion of the rear end of the snake bone body 1 wrapped by the first bladder 2 becomes hard, and the snake bone segments 11 at the front end of the snake bone body 1 can still rotate to bend, so that the bending radius of the snake bone body 1 is reduced, and the snake bone body 1 is conveniently introduced into the body cavity.
Of course, in the preferred embodiment, the first bag body 2 needs to be fully extended and installed on all the snake bone bodies 1, so that the bending rigidity of the whole snake bone body 1 can be controlled, and the whole snake bone body 1 is not easy to bend, so that the snake bone body 1 can be conveniently led into the body cavity.
As for the material for manufacturing the first bladder 2, nylon (Nylon) material, polyester fiber (Polyester) or the like is generally used, and since Nylon has high strength and abrasion resistance, and Polyester fiber has heat resistance and tear resistance, the applicability of the first bladder 2 can be improved.
Of course, the first capsule 2 may be in direct contact with the snake bone body 1 or indirect contact, specifically, in the case of direct contact, the side wall of the first capsule 2 may be in direct contact with the side wall of the snake bone body 1, while in the case of indirect contact, in actual installation, a deformation material layer, such as a plastic film, may be disposed between the first capsule 2 and the snake bone body 1, the first capsule is filled with a fluid medium, and when the expansion portion 21 of the first capsule 2 expands and deforms, the deformation material layer deforms along with the expansion portion 21, and then abuts against the gap between two adjacent snake bone segments 11.
As an alternative embodiment, the deformable material layer may be directly located on the outer wall of the snake bone segments 11, in which case the material of the outer wall of the snake bone segments 11 is not necessarily a deformable material, and other cushion layers may be selected, and after the first bladder 2 is filled with the fluid medium, the expansion portion 21 of the first bladder 2 is expanded and deformed to directly abut against the gap between two adjacent snake bone segments 11.
As an alternative embodiment, the first bag body 2 may be in a hollow cylindrical shape or a plurality of strip shapes, when the shape of the first bag body 2 is a hollow cylindrical shape, the snake bone body 1 is located in the hollow cylindrical shape of the first bag body 2, the first bag body 2 is wrapped on the snake bone body 1, the outer wall of the snake bone body 1 is contacted with the inner wall of the first bag body 2, the first bag body 2 is wrapped and installed along the circumferential extension of the snake bone body 1, after the first bag body 2 is installed on the snake bone body 1 in an extending manner, at this time, the first bag body 2 and the snake bone body 1 have higher fitting degree and do not occupy too much space of the active bending section 42, and the first bag body 2 can be installed on the snake bone body 1 more conveniently under the shape.
When the shape of the first bag body 2 is a long strip shape, the number of the first bag bodies 2 is at least two, in the figure, the situation that the number of the first bag bodies 2 is two and four is specifically illustrated, under the situation, the first bag bodies 2 are uniformly distributed along the circumferential direction of the snake bone body 1, and the optimal positions of the first bag bodies 2 are symmetrically arranged on two sides of a plane where the hinge shafts of the snake bone sections 11 are located, so that the normal swing between the snake bone sections 11 can not be influenced by the first bag bodies 2, and meanwhile, the balance of the force applied by the first bag bodies 2 can be ensured, so that swing between the snake bone sections 11 due to unbalanced stress can be avoided.
Referring to fig. 3 and 5, the expansion portion 21 is located at the swing gap 3 between the adjacent snake bone segments 11, and of course, the number of expansion portions 21 at the swing gap 3 between each adjacent snake bone segment 11 may be one or more, and is not particularly limited herein.
It should be emphasized that the expansion portion 21 is a part of the first bladder 2 and expands along with the first bladder 2, and because there is a supporting force between the first bladder 2 and the outer wall of the snake bone joint 11, when the first bladder 2 is injected with fluid medium, the first bladder 2 at the outer wall of the snake bone joint 11 will not expand and deform towards the center of the snake bone joint 11, and the expansion portion 21 between adjacent snake bone joints 11 will expand and deform to occupy the swing gap 3, so as to achieve the purpose of limiting the swing amplitude of the adjacent two snake bone joints 11 swinging towards two sides.
However, in other preferred embodiments, the expansion portion 21 may be an expansion protrusion formed separately with the first bladder 2, and in the initial state, the expansion protrusion is located at the swinging gap 3 between the adjacent snake bone segments 11, and after the fluid medium is filled into the first bladder 2, the expansion protrusion expands accordingly, so that the expansion efficiency is higher and the reaction time is faster. The expansion portion 21 has the two solutions described above in which the initial state is at the rocking gap 3 between the adjacent snake segments 11 and in which the initial state is not at the rocking gap 3 between the adjacent snake segments 11.
When the insertion part of the endoscope needs to be inserted into a cavity to be inspected in the abdomen of a human body and the insertion part needs to be conveniently inserted into a proper cavity position, the expansion part 21 on the first bag body 2 is made to invade the swinging gap 3 between the two sections of snake bone segments 11 by injecting a fluid medium into the first bag body 2, so that the snake bone segments 11 are limited to swing, the degree of softness of the snake bone segments of the endoscope, namely the free bending segments, is controlled, and finally the operation of entering the body cavity is facilitated.
Referring to fig. 5 and 6, for the purpose of the expansion portion 21 further restricting the adjacent two snake bone segments 11 from swinging toward both sides, the expansion portion 21 is composed of an extension portion 211 and an anchoring portion 222, and of course, the first balloon 2 may be extended in the axial direction thereof on the outside or inside of the snake bone body 1.
As an alternative embodiment, when the first bladder 2 is on the outer side wall of the snake bone body 1, the extension section 211 expands to occupy the swing gap 3 between the two adjacent snake bone sections 11 and abuts against the end surfaces of the two adjacent snake bone sections 11, the extension section 211 can play a role in restricting the swing between the two snake bone sections 11 at one stage, the anchoring section 222 expands to abut against the inner side wall surfaces of the two adjacent snake bone sections 11, and the anchoring section 222 can further play a role in restricting the swing between the two snake bone sections 11 at the second stage.
Meanwhile, the projection of the first bag body 2 along the axial direction of the snake bone body 1 is located at the outer side of the projection of the traction rope 44 along the axial direction of the snake bone body 1, so that the first bag body 2 can not be abutted against the traction rope 44 after being expanded, normal traction of the traction rope 44 is affected, and of course, in other implementations, the first bag body 2 can be abutted against the traction rope 44 after being expanded, and displacement of the traction rope 44 is limited by utilizing friction force between the first bag body 2 and the traction rope 44, so that the hardening effect of the snake bone body 1 is further improved.
As an alternative embodiment, when the first capsule 2 is on the inner side wall of the snake bone body 1, the extension section 211 expands to occupy the swing gap 3 between the adjacent two snake bone segments 11 and abuts against the end faces of the adjacent two snake bone segments 11, the anchoring section 222 expands to abut against the outer side wall faces of the adjacent two snake bone segments 11, and simultaneously the projection of the first capsule 2 along the axial direction of the snake bone body 1 is located outside the projection of the hauling rope 44 along the axial direction of the snake bone body 1. Indeed, the first balloon 2 will not abut against the traction rope 44 after being inflated, which affects the normal traction of the traction rope 44, and the anchoring section 222 may further serve as a limit between adjacent snake bone segments 11.
In practical manufacturing, the thickness of the anchoring section 222 is smaller than that of the first bladder body 2 and the extension section 211, and when the first bladder body 2, the extension section 211 and the anchoring section 222 are filled with fluid medium, the anchoring section 222 expands more along with the expansion of the first bladder body 2, the extension section 211 and the anchoring section 222, and expands along the connection between the extension section 211 and the anchoring section 222, and the anchoring section 222 is attached to the side wall of the two adjacent snake bone segments 11, so as to achieve the purpose of limiting the swing of the two adjacent snake bone segments 11.
Through setting up expansion portion 21 into expansion section 211 and anchor section 222, after its expansion section 211 follows the expansion of first bag body 2, can butt in the terminal surface of adjacent two snake condyle 11, expansion section 211 just has the spacing effect of one-level this moment, and anchor section 222 follows after the expansion of first bag body 2, can butt in the inside wall surface of adjacent two snake condyle 11, anchor section 222 just has the effect of fastening adjacent two snake condyle 11 this moment to have the spacing effect of second grade, through double spacing to adjacent two snake condyle 11, alright realize closely prescribing a limit to the swing of adjacent two snake condyle 11.
Referring to fig. 7 and 8, in order to facilitate control of inflation or deflation of the first balloon 2, the distal end of the connection tube 5 is in communication with the first balloon 2, and the pressing portion 6 is movably connected to the connection tube 5 and is movable between a first position 61 and a second position 62 with respect to the axial direction of the connection tube 5.
Specifically, the pressing portion 6 is formed by a pressing roller 64, and in other embodiments, the pressing roller 64 may be formed by a pressing block, the outer wall of the pressing roller 64 is integrally formed with a plurality of protruding strips 641 along the circumferential direction, and the pressing roller 64 is coaxially integrally formed with a rotating shaft 642.
The handle 4 is provided with a sliding groove 40 along the length direction of the handle 4, the sliding groove 40 is in a strip shape and is in an opening shape, the side wall of the width direction of the sliding groove 40 is provided with a limiting groove 401 along the length direction, the limiting groove 401 is provided with an inclined section and a straight section, the inclined section is communicated with the straight section, an included angle between the inclined section and the straight section is an obtuse angle and is inclined downwards towards the bottom wall direction of the limiting groove 401, the straight section of the limiting groove 401 is parallel to the bottom wall of the sliding groove 40, and a rotating shaft 642 of the extruding roller 64 is slidably connected in the limiting groove 401.
When the rotating shaft 642 of the squeeze roll 64 is located at the distal end of the inclined section of the limit groove 401, the squeeze portion 6, i.e. the squeeze roll 64, is located at the first position 61, when the rotating shaft 642 of the squeeze roll 64 is located at the distal end of the horizontal section of the limit groove 401, the squeeze portion 6, i.e. the squeeze roll 64, is located at the second position 62, and when the rotating shaft 642 of the squeeze roll 64 is located at the other positions of the inclined section and the flat section of the limit groove 401, the squeeze portion 6, i.e. the squeeze roll 64, is located at the third position 63, and under the limit condition of the limit groove 401, the squeeze and push of the connecting pipe 5 can be conveniently realized due to the existence of the inclined section and the flat section of the limit groove 401, thereby controlling the expansion of the expansion portion 21 of the first bag body 2.
Of course, when the pressing portion 6, that is, the pressing roller 64 is at the first position 61, the connection pipe 5 is in the on state, and when the connection pipe 5 is in contact with or not in contact with the pressing portion 6, that is, when the pressing roller 64 is at the second position 62, the pressing portion 6 presses the connection pipe 5 to collapse the position of the connection pipe 5, thereby bringing the connection pipe 5 into the off state, a closed space is formed between the first bladder 2 and the connection pipe 5, the expansion portion 21 of the first bladder 2 is in the first expanded state, and when the first expanded state is in the completely expanded state, the expansion portion 21 of the first bladder 2 is in the completely expanded state.
While in the case where the pressing portion 6, i.e., the pressing roller 64, is in the third position 63, the position where the pressing portion 6 presses the connection pipe 5 is flattened to bring the connection pipe 5 into the off state, while a closed space is formed between the first balloon 2 and the connection pipe 5, wherein when the pressing portion 6 moves from the third position 63 to the second position 62, the pressing portion 6 can push the fluid medium at the distal end of the connection pipe 5 into the first balloon 2 to increase the expansion degree of the expansion portion 21 of the first balloon 2, and the expansion portion 21 of the first balloon 2 is in the second expanded state lower than the first expanded state. Therefore, the expansion or the deflation of the first bag body 2 is controlled through the extrusion part 6, the whole operation is convenient, and the third position 63 plays a role in conveniently controlling the expansion degree of the expansion part 21 of the first bag body 2 by medical staff.
By installing the pressing part 6, the purpose of pushing the fluid medium in the connecting pipe 5 can be achieved by using the first position 61, the second position 62 and the third position 63 where the pressing part 6 is located, so that the first bladder 2 and the expansion degree of the expansion part 21 on the first bladder 2 can be controlled slowly and conveniently.
Referring to fig. 9 and 10, as an alternative embodiment, the other end of the connecting tube 5 is mounted outside the housing of the handle 4 through the passive bending section 41, and the syringe 7 is mounted on the housing of the handle 4, and the syringe 7 is detachably mounted on the housing of the handle 4 and connected with one end of the connecting tube 5, so that the syringe 7 can be conveniently replaced to adapt to different requirements, and meanwhile, after the syringe 7 is removed, the volume of the handle 4 can be reduced, so that a medical staff can conveniently store and place the syringe 7, and fluid media are filled in the syringe 7.
As an alternative embodiment, the injector 7 may be replaced by an automatic injector 7 and a syringe pump, and since the automatic injector 7 has a function of precisely controlling the metering of the fluid to be delivered, the syringe pump can omit a manual operation manner, thereby realizing automation, and the convenience of use can be improved in all the above manners.
The injector 7 can rapidly control the expansion degree of the first bag body 2 and the expansion part 21 on the first bag body 2, and can supplement fluid medium into the first bag body 2 and the connecting pipe 5 through the injector 7, so that the function of weakening and controlling the expansion degree of the first bag body 2 and the expansion part 21 on the first bag body 2 due to leakage of the fluid medium is avoided, and in addition, the phenomenon that one of the extrusion part 6 and the injector 7 is damaged and cannot be used is avoided;
A branch pipe 51 is installed on one side of the connecting pipe 5 through a three-way joint 52, the three-way joint 52 connects the connecting pipe 5 with the branch pipe 51 and forms a Y-shaped pipeline structure, the branch pipe 51 extends out of the handle 4 shell, the branch pipe 51 is obliquely arranged towards the near end of the connecting pipe 5, specifically, an included angle between the branch pipe 51 and a section of pipe body of the connecting pipe 5, which is close to one side of the injector 7, is an acute angle, and when the injector 7 injects fluid medium into the connecting pipe 5, the branch pipe 51 forms a Y-shaped with the connecting pipe 5, so that the fluid medium can be prevented from flowing out of a port of the branch pipe 51.
As an alternative embodiment, the end portion of the branch pipe 51 may be provided with a blocking head 511, and the blocking or opening of the branch pipe 51 may be simply implemented by using the blocking head 511, which may be adaptively selected according to practical situations.
As an alternative embodiment, the passive bending section 41 is fitted with the second bladder 8 along the axial direction, the second bladder 8 is wrapped around the outer wall of the bending tube 411 that is installed on the passive bending section 41, the bending tube 411 is the prior art of the passive bending section 41 of the endoscope, the bending tube 411 is not described in detail, and the bending stiffness of the active bending section 42 can be controlled after the second bladder 8 is filled with the flowing medium. Of course, since the second bladder 8 has a certain deformability, the bending properties of the active bending section 42 will not be fully affected even though the active bending section 42 will be hardened to a certain extent after the second bladder 8 is filled with a flowing medium, so that the rigid active bending section 42 and the passive bending section 41 are inserted into the body cavity.
In the specific connection of the connection pipe 5, the connection pipe 5 is respectively communicated with the second bag body 8 and the first bag body 2 or the connection pipe 5, the second bag body 8 and the first bag body 2 are sequentially communicated. In this embodiment, since the first bag body 2 is uniformly distributed and installed along the circumferential direction of the snake bone body 1, after the connection pipe 5 is controlled by the extrusion portion 6, the connection pipe can be furcated and sequentially communicated with the second bag body 8 and the first bag body 2, so as to simultaneously control the second bag body 8 and the first bag body 2 to expand simultaneously, and the connection mode is simple and convenient to install.
As an alternative embodiment, the connecting pipe 5 is respectively communicated with the second bag body 8 and the first bag body 2, and the response speed of the expansion deformation of the first bag body 2 can be faster and more convenient to control because the port of the connecting pipe 5 is closer to the first bag body 2.
Referring to fig. 11-14, as an alternative embodiment, the second bladder 8 is disposed at least partially in a spiral extending along the axial direction of the passive bending section 41, where "at least partially" includes that the entire passive bending section 41 is disposed in a spiral wrapped configuration by the second bladder 8, and that a portion of the passive bending section 41 is disposed in a spiral wrapped configuration by the second bladder 8.
The spiral shape of the second bladder 8 after filling with the fluid medium not only has a certain stiffening property of the second bladder 8, but also the passive bending section 41 maintains a certain bending property due to the certain connecting gap between the spiral shapes of the second bladder 8.
As an alternative embodiment, the second bladder 8 may be formed by two semicircular second bladders 8, and only the two halves of the second bladder 8 need to be wrapped around the outer wall of the bending tube 411 during the installation of the second bladder 8, so that the installation time is saved, and the two halves of the second bladder 8 also have the capability of hardening the passive bending section 41 after being filled with the fluid medium.
As an alternative embodiment, the second bladder 8 may also be formed by combining a plurality of strip-shaped bladders, where the two ends of the plurality of strip-shaped bladders are connected together, so that after the fluid medium is filled into the bladder, the stiffening characteristic of the second bladder 8 can be achieved, and the second bladder 8 adopts such a shape, so that the occupation of the space of the passive bending section 41 can be reduced, the diameter of the active bending section 42 is prevented from being too large, the passive bending section 41 is difficult to be inserted into a cavity to be inspected of a body, and the cost is reduced.
The proximal end of the active bending section 42 is used for mounting the distal end of the passive bending section 41, the distal end of the active bending section 42 is used for being connected with the lens holder 43, and the proximal end of the passive bending section 41 is used for being mounted on the handle 4 of the endoscope, thereby forming the main whole of the insertion portion of the endoscope.
The foregoing is merely illustrative of the present invention, and the present invention 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 invention.
Claims (9)
1. An active bending section for use with an endoscope, comprising:
the snake bone comprises a snake bone body (1), wherein the snake bone body (1) is provided with a plurality of snake bone joints (11) which are mutually hinged;
the snake bone comprises a snake bone body (1) and a first bag body (2), wherein the first bag body (2) is arranged on one side of the snake bone body (1) in an extending mode along the axis direction of the snake bone body, and an expansion part (21) is arranged on the first bag body (2);
The first bag body (2) is configured to be filled with fluid medium, and the expansion part (21) of the first bag body (2) is positioned between two adjacent snake bone segments (11) and expands to occupy the swing gap (3) so as to limit the swing amplitude of the two adjacent snake bone segments (11) swinging towards two sides;
the first bag body (2) is laid on the inner side or the outer side peripheral wall of the snake bone body (1), and the expansion part (21) comprises an extension section (211) and an anchoring section (222);
When the first bag body (2) is arranged on the outer side peripheral wall of the snake bone body (1), the extension section (211) expands to occupy the swing gap (3) between two adjacent snake bone joints (11) and is abutted against the end faces of the two adjacent snake bone joints (11), the anchoring section (222) expands to be abutted against the inner side wall faces of the two adjacent snake bone joints (11), and meanwhile, the projection of the first bag body (2) along the axial direction of the snake bone body (1) is positioned on the outer side of the projection of the traction rope (44) along the axial direction of the snake bone body (1);
When the first capsule body (2) is on the inner side peripheral wall of the snake bone body (1), the expansion section (211) expands to occupy the swinging gap (3) between two adjacent snake bone sections (11) and is abutted to the end faces of the two adjacent snake bone sections (11), the anchoring section (222) expands to be abutted to the outer side wall face of the two adjacent snake bone sections (11), and meanwhile, the projection of the first capsule body (2) along the axial direction of the snake bone body (1) is located on the outer side of the projection of the traction rope (44) along the axial direction of the snake bone body (1).
2. Active bending section according to claim 1, characterized in that the first balloon (2) is arranged extending in the circumferential direction of the snake bone body (1);
And/or, the first capsules (2) are provided with a plurality of capsules, and all the first capsules (2) are uniformly distributed along the circumference of the snake bone body (1).
3. Active bending section according to any one of claims 1-2, further comprising a connecting tube (5) and a squeezing portion (6), the distal end of the connecting tube (5) being in communication with the first balloon (2), the squeezing portion (6) being movably connected to the connecting tube (5) and being movable relative to the connecting tube (5) in its axial direction between a first position (61) and a second position (62);
in the case of the first position (61), the connecting tube (5) is in an on state;
Under the condition of the second position (62), the extrusion part (6) extrudes the connecting pipe (5), the position of the connecting pipe (5) extruded by the extrusion part (6) is flattened, so that the connecting pipe (5) is in a closed state, meanwhile, a closed space is formed between the first bag body (2) and the connecting pipe (5), and the expansion part (21) of the first bag body (2) is in a first expansion state so as to occupy the swinging gap (3).
4. An active bending section according to claim 3, characterized in that the press part (6) is movable in its axial direction relative to the connecting tube (5) to a third position (63) between the first position (61) and the second position (62);
In a third position (63), the position of the pressing part (6) pressing the connecting pipe (5) is flattened to enable the connecting pipe (5) to be in a closed state, a closed space is formed between the first bag body (2) and the connecting pipe (5), and the expansion part (21) of the first bag body (2) is in a second expansion state with lower expansion degree compared with the first expansion state;
when the pressing part (6) moves from the third position (63) to the second position (62), the pressing part (6) can push and inject the fluid medium in the connecting pipe (5) into the first bag body (2) more so as to enlarge the expansion degree of the expansion part (21) of the first bag body (2).
5. Active bending section according to claim 4, characterized in that the other end of the connecting tube (5) is provided with a syringe (7), the syringe (7) being filled with a fluid medium;
and/or one side of the connecting pipe (5) is communicated with a branch pipe (51), and the branch pipe (51) is obliquely arranged towards the proximal end of the connecting pipe (5).
6. An insertion portion for an endoscope, comprising a passive bending section (41), an active bending section (42) according to any one of claims 1-5, the distal end of the passive bending section (41) being connected to the proximal end of the active bending section (42).
7. An insertion part applied to an endoscope, comprising a passive bending section (41) and an active bending section (42) according to any one of claims 4-5, wherein the distal end of the passive bending section (41) is connected to the proximal end of the active bending section (42), the passive bending section (41) is provided with a second bag body (8) in an attached manner along the axial direction, and the connecting pipe (5) is respectively communicated with the second bag body (8) and the first bag body (2) or the connecting pipe (5), the second bag body (8) and the first bag body (2) are sequentially communicated.
8. An insert according to claim 7, wherein the second balloon (8) is arranged to extend helically at least partly in the axial direction of the passive bending section (41).
9. An endoscope, characterized by comprising a handle (4) and an insertion portion according to any of claims 7-8, the proximal end of the passive bending section (41) being connected to the operating handle (4).
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| CN119606284A (en) * | 2024-12-25 | 2025-03-14 | 飞依诺科技股份有限公司 | Endoscope and hydraulically driven snake for endoscope |
| CN119867621B (en) * | 2025-01-21 | 2025-08-01 | 徐州史克斯光电科技有限公司 | Control part and endoscope thereof |
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| CN1662349A (en) * | 2002-06-24 | 2005-08-31 | 松下电器产业株式会社 | Multi-joint drive mechanism, manufacturing method thereof, handle and robot using same |
| CN113940729A (en) * | 2021-12-21 | 2022-01-18 | 极限人工智能有限公司 | Universal snake bone assembly, endoscope instrument forceps and split type operation device |
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| JP3333211B2 (en) * | 1994-01-26 | 2002-10-15 | レイリー，マーク・エイ | Improved expandable device for use in a surgical method for bone treatment |
| CN107835704B (en) * | 2015-03-27 | 2020-12-15 | 项目莫里股份有限公司 | Fluid drive system for catheter articulation and other uses |
| CN110192901A (en) * | 2018-02-27 | 2019-09-03 | 上海科赐医疗技术有限公司 | Sacculus pulling device and its manufacturing method |
| DE102018133368A1 (en) * | 2018-12-21 | 2020-06-25 | Konstantin Bob | Endoscope with an expandable working channel |
| US10821002B1 (en) * | 2019-12-10 | 2020-11-03 | Spica Medical Technologies, Llc | Inflatable spinal implants and related systems and methods |
| CN214818577U (en) * | 2020-12-24 | 2021-11-23 | 浙江工业大学 | A joint pneumatic locking variable stiffness soft arm skeleton structure |
| CN221242821U (en) * | 2024-01-23 | 2024-07-02 | 杭州海康慧影科技有限公司 | Endoscope snake bone and endoscope |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1662349A (en) * | 2002-06-24 | 2005-08-31 | 松下电器产业株式会社 | Multi-joint drive mechanism, manufacturing method thereof, handle and robot using same |
| CN113940729A (en) * | 2021-12-21 | 2022-01-18 | 极限人工智能有限公司 | Universal snake bone assembly, endoscope instrument forceps and split type operation device |
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