CN117017371A - Instrument tube, insertion part and endoscope - Google Patents
Instrument tube, insertion part and endoscope Download PDFInfo
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- CN117017371A CN117017371A CN202311018642.XA CN202311018642A CN117017371A CN 117017371 A CN117017371 A CN 117017371A CN 202311018642 A CN202311018642 A CN 202311018642A CN 117017371 A CN117017371 A CN 117017371A
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- 238000003780 insertion Methods 0.000 title claims abstract description 29
- 230000037431 insertion Effects 0.000 title claims abstract description 29
- 238000005452 bending Methods 0.000 claims abstract description 87
- 238000001574 biopsy Methods 0.000 claims abstract description 50
- 210000000988 bone and bone Anatomy 0.000 claims description 29
- 241000270295 Serpentes Species 0.000 claims description 28
- 210000001519 tissue Anatomy 0.000 claims description 24
- 230000007704 transition Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 206010011409 Cross infection Diseases 0.000 description 2
- 206010029803 Nosocomial infection Diseases 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000036285 pathological change Effects 0.000 description 2
- 231100000915 pathological change Toxicity 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/04—Endoscopic instruments
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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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
-
- 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
-
- 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
- A61B1/012—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 characterised by internal passages or accessories therefor
- A61B1/018—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 characterised by internal passages or accessories therefor for receiving instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/06—Biopsy forceps, e.g. with cup-shaped jaws
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Molecular Biology (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- Pathology (AREA)
- Public Health (AREA)
- Radiology & Medical Imaging (AREA)
- Physics & Mathematics (AREA)
- Biophysics (AREA)
- Optics & Photonics (AREA)
- Biodiversity & Conservation Biology (AREA)
- Endoscopes (AREA)
Abstract
The application relates to the technical field of endoscopes, in particular to an instrument tube, an insertion part and an endoscope, wherein the instrument tube is provided with an instrument channel which is penetrated along the axial direction of the instrument tube, the instrument tube at least comprises a first tube section and a second tube section, the first tube section is positioned at the far end of the second tube section, the first tube section can be bent along with the bending of an active bending section of the endoscope, the caliber of the second tube section is larger than that of the first tube section, the second tube section is positioned at the proximal end part of the active bending section of the endoscope, or the second tube section is positioned between the active bending section and a passive bending section of the endoscope, or the second tube section is positioned at the far end part of the passive bending section, the second tube section can accommodate the forceps head of a biopsy forceps in an open state, and a circulation gap for the circulation of tissues in a human body is arranged between the forceps head of the biopsy forceps in the open state and the inner wall of the second tube section; in the scheme, the second pipe sections distributed at the proximal end of the active bending section can provide a certain movable space for the forceps head of the biopsy forceps, so that the convenience of operation of the biopsy forceps is improved.
Description
Technical Field
The application relates to the technical field of endoscopes, in particular to an instrument tube, an insertion part and an endoscope.
Background
The endoscope is a commonly used medical instrument and comprises an operating handle and an inserting part, wherein the inserting part can enter a human body through a human body cavity or an operation incision, an active bending section at the far end of the inserting part can be driven to carry out posture adjustment by stirring a stirring rod on the operating handle, a camera shooting module at the far end of the inserting part can observe internal tissues of the human body, and a doctor is helped to judge pathological change positions and tissue structural characteristics of pathological change positions in the human body.
In the related art, an instrument tube is usually disposed in the insertion portion, and the instrument tube has an instrument channel for placing a treatment instrument, for example, the treatment instrument may be a biopsy forceps, and a forceps head of the biopsy forceps may be opened or clamped, so as to grasp and sample tissue inside a human body, however, for the tissue grasped by the forceps head, the forceps head can only be pulled away to collect and retain the sample, and there is a problem of inconvenient operation.
Disclosure of Invention
The embodiment of the application discloses an instrument tube, an insertion part and an endoscope, which are used for solving the technical problem that biopsy forceps in the related art are inconvenient to sample.
In order to solve the above problems, the embodiment of the application adopts the following technical scheme:
in a first aspect, embodiments of the present application provide an instrument tube having an instrument channel extending axially therethrough, the instrument tube comprising at least a first tube segment and a second tube segment, the first tube segment being positioned distally of the second tube segment, the first tube segment being bendable with bending of an active bending segment of an endoscope, the second tube segment having a caliber greater than that of the first tube segment, the second tube segment being positioned proximally of the active bending segment of the endoscope, or the second tube segment being positioned between the active bending segment and a passive bending segment of the endoscope, or the second tube segment being positioned distally of the passive bending segment.
The second tube section can accommodate the forceps head of the biopsy forceps in an open state, and a circulation gap for circulation of tissues in the human body is arranged between the forceps head of the biopsy forceps in the open state and the inner wall of the second tube section.
Further, a smooth transition is provided between the inner wall of the first tube section and the inner wall of the second tube section.
Further, the instrument tube further comprises a third tube segment connected to the proximal end of the second tube segment, the third tube segment having a caliber not smaller than the caliber of the first tube segment.
Further, the caliber of the third pipe section is the same as that of the first pipe section, or the caliber of the third pipe section is the same as that of the second pipe section.
Further, the length of the second tube section is greater than the length of the binding clip of the biopsy forceps.
In a second aspect, an embodiment of the present application provides an insertion portion, where the insertion portion includes an active bending section, a passive bending section, and the foregoing instrument tube, the first tube section is disposed in the active bending section, and the second tube section is disposed at a proximal end of the active bending section, or the second tube section is disposed between the active bending section and the passive bending section.
Further, the active bending section comprises a plurality of snake bone units connected end to end, the second pipe section is arranged in the nearest snake bone unit, and in the extending direction of the active bending section, the length of the nearest snake bone unit is larger than that of any snake bone unit distributed at the far end of the active bending section.
Further, the insertion portion further includes an intermediate adapter, the intermediate adapter is a hard tubular structure with two ends penetrating, the proximal end portion of the active bending section is sleeved in the intermediate adapter, the distal end portion of the passive bending section is sleeved in the intermediate adapter, a gap is formed between the proximal end portion of the active bending section and the distal end portion of the passive bending section, and the second pipe section is located in the intermediate adapter.
Further, the passive bending section comprises a spiral supporting tube, the supporting tube is provided with a plurality of spiral units connected end to end and tube sections distributed at the distal ends of the spiral units, and the length of the tube sections is larger than that of the second tube section.
In a third aspect, embodiments of the present application also provide an endoscope including the foregoing insertion portion.
The technical scheme adopted by the embodiment of the application can achieve the following beneficial effects:
the instrument tube, the insertion part and the endoscope disclosed by the embodiment of the application have the advantages that after the forceps head of the biopsy forceps is used for grabbing internal tissues of a human body, the forceps head of the biopsy forceps can be retracted into the second tube section of the instrument tube without completely drawing the forceps head of the biopsy forceps away from the instrument channel, a certain movable space is provided for the forceps head of the biopsy forceps because the caliber of the second tube section is larger than that of the first tube section, and the forceps head in an open state can be accommodated in the second tube section, so that an operator can operate the biopsy forceps head to switch the forceps head from the clamping state to the open state, at the moment, the internal tissues of the human body grabbed by the forceps head can be released, and the released internal tissues of the human body can be drawn away by negative pressure to realize sample collection because a circulation gap for circulating the internal tissues of the human body is arranged between the forceps head and the inner wall of the second tube section;
secondly, the instrument tube, the insertion part and the endoscope disclosed by the embodiment of the application have the advantages that as the forceps head of the biopsy forceps can be movably opened in the second tube section to release internal tissues of a human body, the biopsy forceps do not need to be repeatedly placed in or pulled out of the instrument tube, the operation complexity of repeatedly inserting and pulling out the biopsy forceps is avoided, and the operation convenience is good; at the same time, this approach also avoids cross-infection that may occur during sampling when the biopsy forceps are exposed to the outside environment.
Drawings
In order to more clearly illustrate the embodiments of the application 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 application, 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 schematic structural views of an instrument tube according to an embodiment of the present application;
FIG. 2 is a schematic view of an instrument channel of an instrument tube according to an embodiment of the application;
FIG. 3 is a schematic view of the structure of an insert part according to an embodiment of the present application;
FIG. 4 is an enlarged partial schematic view at A in FIG. 3;
FIG. 5 is a schematic view of the structure of an insertion section placement biopsy forceps according to an embodiment of the application;
FIG. 6 is an enlarged partial schematic view at B in FIG. 5;
FIG. 7 is a schematic view of a passive bending section according to an embodiment of the present application;
FIG. 8 is a second schematic view of the structure of an instrument tube according to an embodiment of the present application;
FIG. 9 is a second schematic view of an instrument channel of an instrument tube according to an embodiment of the application.
In the figure:
100-instrument tube, 110-first tube segment, 120-second tube segment, 130-third tube segment, 140-instrument channel, 141-first lumen, 142-second lumen, 143-third lumen; 200-active bending section, 210-snake bone unit; 300-passive bending section, 310-supporting tube, 311-spiral unit and 312-pipe section; 400-intermediate adapter, 410-gap; 500-biopsy forceps and 510-forceps head.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, based on the examples herein, which are within the scope of the application as defined by the claims, will be within the scope of the application 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.
In various embodiments of the present application, "proximal" and "distal" refer to the proximal and distal positions of an endoscope and its accessories relative to a user in the environment of use. Wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".
In the related art, an endoscope includes an insertion portion in which an instrument tube having an instrument channel for inserting a treatment instrument, such as a biopsy forceps, whose forceps head is opened or clamped, is generally provided, and an operation handle connected to a proximal end of the insertion portion, thereby performing grasping and sampling of tissue inside a human body. However, the inventor found in the research process that, in order to guarantee the smoothness of the insertion portion being placed in the human body cavity, reduce the uncomfortable sense of patient, the radial dimension of the distal end of the insertion portion is usually less, is limited by the radial dimension of the distal end of the insertion portion, the forceps head of the biopsy forceps can be actively opened or clamped only after the forceps head stretches out of the instrument tube, so as to grasp and sample the internal tissues of the human body, and when collecting and reserving the sample, the forceps head in the clamped state needs to be completely withdrawn and then can be normally carried out, on one hand, the conditions of inconvenient operation exist in repeated withdrawal and placement of the biopsy forceps, and on the other hand, under the condition that the forceps head of the biopsy forceps is exposed to the external environment, bacteria in air are easy to be contaminated, and cross infection is easy to be caused when the forceps head of the biopsy forceps enters the human body again.
In this regard, some embodiments of the present application provide an instrument tube for use with an endoscope. The instrument tube, the insertion portion and the endoscope according to the embodiment of the present application will be described below with reference to fig. 1 to 9 by way of specific examples and application scenarios thereof.
Referring to fig. 1-2 and fig. 5-6, an embodiment of the present application discloses an instrument tube 100, wherein the disclosed instrument tube 100 has an instrument channel 140 penetrating through the instrument tube in an axial direction, the instrument tube 100 at least comprises a first tube segment 110 and a second tube segment 120, the first tube segment 110 is distributed at a distal end of the second tube segment 120, the instrument channel 140 has a first lumen 141 distributed at the first tube segment 110 and a second lumen 142 distributed at the second tube segment 120, and a caliber of the second tube segment 120 is larger than a caliber of the first tube segment 110, i.e. a cross-sectional area of the first lumen 141 is smaller than a cross-sectional area of the second lumen 142.
When the instrument tube 100 of the present application is applied to an endoscope, the first tube segment 110 may be disposed within the active bending section 200 of the endoscope, the first tube segment 110 may be bent along with the bending of the active bending section 200, the second tube segment 120 may be disposed at a proximal end portion of the active bending section 200, or the second tube segment 120 may be disposed between the active bending section 200 and the passive bending section 300, the second tube segment 120 may not be bent along with the bending of the active bending section 200, or the second tube segment 120 may be disposed at a distal end portion of the passive bending section 300.
The second tube segment 120 can accommodate the jaw 510 of the biopsy forceps 500 in the open state, and a communication gap for communicating tissue inside the human body is provided between the jaw 510 of the biopsy forceps 500 in the open state and the inner wall of the second tube segment 120.
Based on the above technical solution, after grabbing the tissue inside the human body, the forceps head 510 of the biopsy forceps 500 may be retracted into the second tube section 120 of the instrument tube 100, without completely withdrawing the forceps head 510 of the biopsy forceps 500 from the instrument channel 140, because the caliber of the second tube section 120 is larger than that of the first tube section 110, the second tube section 120 can provide a certain movable space for the forceps head 510 of the biopsy forceps 500, while in the embodiment of the application, the second tube section 120 can accommodate the forceps head 510 in the open state, so that when the forceps head 510 moves into the second tube section 120, the operator can operate the biopsy forceps 500 to switch the forceps head from the clamped state to the open state, and at this time, the tissue inside the human body grabbed by the forceps head 510 can be released, and the released tissue inside the human body can be withdrawn by negative pressure to realize collection and sample retention due to the circulation gap between the forceps head 510 and the inner wall of the second tube section 120.
In addition, because the forceps head 510 of the biopsy forceps 500 can be movably opened in the second tube section 120 to release the internal tissue of the human body, the released internal tissue of the human body can be drawn in under the suction effect of the negative pressure, so that the internal tissue of the human body is not required to be repeatedly put into or drawn out of the biopsy forceps 500 in the instrument tube 100, the complexity of repeatedly inserting and extracting the biopsy forceps 500 is avoided, and the operation convenience is good; at the same time, this approach also avoids cross-contamination of bioptome 500 during sampling when exposed to the outside environment.
In a further technical solution, please continue to refer to fig. 2, the inner wall of the first tube section 110 and the inner wall of the second tube section 120 are in smooth transition, that is, even if the caliber of the first tube section 110 is smaller than that of the second tube section 120, a first step surface facing the proximal end of the instrument tube 100 is not formed therebetween, so that the blocking effect on the placement of the treatment instrument is avoided, and the smoothness of the placement of the treatment instrument is ensured.
The inventor found in the research process that the distal end of the insertion portion needs to be provided with a functional module such as an illumination module and a camera module, under the condition that the caliber of the distal end of the insertion portion is limited, the space occupation of the distal end portion of the instrument tube 100 is further compressed, the rest portion of the insertion portion only accommodates the instrument tube 100 and the wire harness connected with the functional module, and the space occupation of the wire harness is very small, so that the size of the cavity channel of the non-distal end portion of the instrument tube 100 can be made larger, and the smoothness of placing the treatment instrument and the suction flow rate can be improved.
Thus, in some embodiments of the present application, referring to fig. 1-2 or fig. 8-9, the instrument tube 100 further includes a third tube segment 130, the third tube segment 130 is connected to the proximal end of the second tube segment 120, the instrument channel 140 has a third lumen 143 distributed in the third tube segment 130, and the aperture of the third tube segment 130 is not smaller than that of the first tube segment 110, so that the flow cross-sectional area of the instrument channel 140 of the whole instrument tube 100 is not reduced by the third tube segment 130 during the placement of the treatment instrument, so that the placement of the treatment instrument is facilitated, and blockage is less likely to occur when the tissue in the human body flows through the third tube segment 130.
In an alternative embodiment, referring to fig. 1-2 and fig. 5-6, the diameter of the third tube segment 130 is the same as that of the first tube segment 110, and is smaller than that of the second tube segment 120, and the smooth transition between the third tube segment 130 and the second tube segment 120 avoids forming a second step surface between the second tube segment 120 and the third tube segment 130 toward the distal end of the instrument tube 100, thereby avoiding blockage of the body tissue released by the forceps head 510 of the biopsy forceps 500 at the second step surface in the second lumen 142, and ensuring smoothness of the suction of the body tissue.
In another alternative embodiment, referring to fig. 8 to 9, the caliber of the third tube section 130 may be greater than that of the first tube section 110, and fig. 9 illustrates that the caliber of the third tube section 130 is the same as that of the second tube section 120, so that on one hand, smoothness of placement of the treatment instrument is increased, and on the other hand, a larger flow channel can still be formed between the biopsy forceps 500 and the inner wall of the instrument tube 100 in the case that the forceps head 510 of the biopsy forceps 500 is positioned on the tube section 120, so that the internal tissue of the human body grasped by the biopsy forceps 500 can still be smoothly pulled out of the instrument tube 100; meanwhile, the third pipe section 130 and the second pipe section 120 have the same caliber, and can be formed in one step during processing, and the method has the characteristic of convenient processing and forming.
Referring to fig. 3 to 4, the embodiment of the present application further discloses an insertion portion, which includes an active bending section 200, a passive bending section 300 and the aforementioned apparatus tube 100, wherein the first tube section 110 of the apparatus tube 100 is disposed in the active bending section 200, so that the first tube section 110 can bend along with the bending of the active bending section 200, and the second tube section 120 of the apparatus tube 100 is disposed at the proximal end of the active bending section 200, or the second tube section 120 is disposed between the active bending section 200 and the passive bending section 300, or the second tube section 120 is disposed at the distal end of the passive bending section 300.
In an embodiment of the present application, the active bending section 200 includes a plurality of snake bone units connected end to end, and two adjacent snake bone units can rotate relatively, so that the whole active bending section 200 is bent.
The inventors have discovered during the course of research that, when active bending section 200 is bent, the proximal snake bone element is deflected relative to the distal snake bone element in two adjacent snake bone elements, so that the proximal snake bone element is not deflected for the entire active bending section 200, and therefore, the proximal-most snake bone unit can be used as a receiving space for the second tube segment 120 and the jaw 510 of the biopsy forceps 500, that is, the jaw 510 of the biopsy forceps 500 can be received in the proximal-most snake bone unit, so that the jaw 510 of the biopsy forceps 500 cannot follow the bending even if the active bending segment 200 is bent, thereby ensuring normal use of the biopsy forceps 500.
However, the inventor has also found that the length of the jaw 510 of the biopsy forceps 500 is generally greater than the length of the snake bone unit, and even if the jaw 510 is disposed in the most proximal snake bone unit, a portion of the jaw 510 may extend into the snake bone unit adjacent to the most proximal snake bone unit, and when the active bending section 200 is bent, the adjacent snake bone unit may force the jaw 510 to deform, thereby damaging the jaw 510 and affecting the normal use of the jaw 510.
Based on the above findings, in some embodiments of the present application, the second tube segment 120 may be provided at the proximal end of the active bending section 200, that is, the second tube segment 120 may be provided at the proximal-most snake bone unit of the active bending section 200. Specifically, in the extending direction of the active bending section 200, the length of the nearest snake bone unit is greater than that of any snake bone unit distributed at the distal end thereof, and the length of the nearest snake bone unit is greater than that of the forceps head 510, in which case the forceps head 510 of the biopsy forceps 500 can be accommodated in the nearest snake bone unit without being squeezed by the nearest snake bone unit and its adjacent snake bone unit to be bent.
Of course, in other embodiments of the application, the second tube segment 120 may also be disposed between the active bending segment 200 and the passive bending segment 300. Specifically, referring to fig. 3 to 6, the insertion portion may further include a middle adaptor 400, where the middle adaptor 400 is a hard tubular structure with two ends penetrating, the proximal end of the active bending section 200 is sleeved in the middle adaptor 400, the distal end of the passive bending section 300 is sleeved in the middle adaptor 400, a gap 410 is formed between the proximal end of the active bending section 200 and the distal end of the passive bending section 300, the length of the gap 410 is greater than that of the forceps head 510, and the forceps head 510 of the biopsy forceps 500 can be accommodated in the gap 410, so that the tubular middle adaptor 400 can provide an accommodating space for the forceps head 510 of the biopsy forceps, and can play a certain role in protecting the forceps head 510.
In some embodiments of the application, the second tube segment 120 may also be provided at the distal end of the passive bend segment 300. Specifically, referring to fig. 7, the passive bending section 300 may include a helical support tube 310, the support tube 310 having a plurality of helical cells 311 and tube segments 312 disposed at distal ends of the plurality of helical cells 311, the tube segments 312 being connected to the distal-most helical cells 311, and the second tube segment 120 may be disposed within the distal-most tube segment 312 of the support tube 310, it being understood that the length of the tube segments 312 is greater than the length of the second tube segment 120 and the length of the clip 510, thereby avoiding the clip 510 being forced to bend when disposed within the tube segments 312 at exposed portions.
The embodiment of the application also provides an endoscope, which comprises an endoscope handle and the insertion part, wherein the proximal end of the insertion part is connected with the endoscope handle, and the active bending section at the distal end of the insertion part can be controlled to bend by operating the endoscope handle.
The endoscope of the embodiment of the application can be a bronchoscope, a nephroscope, an esophagoscope, a gastroscope, a enteroscope, an otoscope, a nasoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope and the like, and the embodiment of the application does not limit the type of the endoscope.
The foregoing embodiments of the present application mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in view of brevity of line text, no further description is provided herein.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (10)
1. An instrument tube for an endoscope, wherein the instrument tube (100) has an instrument channel (140) extending axially therethrough, the instrument tube (100) comprising at least a first tube section (110) and a second tube section (120), the first tube section (110) being located at a distal end of the second tube section (120), the first tube section (110) being bendable with bending of an active bending section (200) of the endoscope, the second tube section (120) having a larger caliber than the first tube section (110), the second tube section (120) being located at a proximal end of the active bending section (200) of the endoscope, or the second tube section (120) being located between the active bending section (200) and a passive bending section (300) of the endoscope, or the second tube section (120) being located at a distal end of the passive bending section (300);
the second tube section (120) can accommodate the forceps head (510) of the biopsy forceps (500) in an open state, and a circulation gap for circulation of human internal tissues is arranged between the forceps head (510) of the biopsy forceps (500) in the open state and the inner wall of the second tube section (120).
2. The instrument tube according to claim 1, wherein a smooth transition is provided between the inner wall of the first tube section (110) and the inner wall of the second tube section (120).
3. The instrument tube according to claim 2, wherein the instrument tube (100) further comprises a third tube segment (130), the third tube segment (130) being connected to the proximal end of the second tube segment (120), the third tube segment (130) having a caliber that is not smaller than the caliber of the first tube segment (110).
4. An instrument tube according to claim 3, characterized in that the caliber of the third tube section (130) is the same as the caliber of the first tube section (110) or the caliber of the third tube section (130) is the same as the caliber of the second tube section (120).
5. The instrument tube according to any one of claims 1 to 4, wherein the length of the second tube section (120) is greater than the length of the forceps head (510) of the biopsy forceps (500).
6. An insertion section, characterized by comprising an active bending section (200), a passive bending section (300) and the instrument tube (100) according to any one of claims 1 to 5, the first tube section (110) being arranged in the active bending section (200), the second tube section (120) being arranged at a proximal end of the active bending section (200);
alternatively, the second tube section (120) is disposed between the active bending section (200) and the passive bending section (300);
alternatively, the second tube section (120) is provided at a distal end portion of the passive bending section (300).
7. The insert according to claim 6, wherein the active bending section (200) comprises a plurality of snake bone units connected end to end, the second tube section (120) being arranged within the most proximal snake bone unit, and wherein in the extension direction of the active bending section (200), the most proximal snake bone unit has a length that is greater than the length of any of the snake bone units distributed at its distal end.
8. The insert of claim 6, further comprising an intermediate adapter (400), the intermediate adapter (400) being a rigid tubular structure with two ends passing through, a proximal end of the active bending section (200) telescoping within the intermediate adapter (400), a distal end of the passive bending section (300) telescoping within the intermediate adapter (400), and a gap (410) between the proximal end of the active bending section (200) and the distal end of the passive bending section (300), the second tube section (120) being located within the intermediate adapter (400).
9. The insert of claim 6, wherein the passive bending section (300) comprises a helical support tube (310), the support tube (310) having a plurality of end-to-end helical cells (311) and tube segments (312) distributed distally of the plurality of helical cells (311), the tube segments (312) having a length greater than a length of the second tube segment (120).
10. An endoscope comprising the insertion portion according to any one of claims 6 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311018642.XA CN117017371A (en) | 2023-08-14 | 2023-08-14 | Instrument tube, insertion part and endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311018642.XA CN117017371A (en) | 2023-08-14 | 2023-08-14 | Instrument tube, insertion part and endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117017371A true CN117017371A (en) | 2023-11-10 |
Family
ID=88642662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311018642.XA Pending CN117017371A (en) | 2023-08-14 | 2023-08-14 | Instrument tube, insertion part and endoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117017371A (en) |
-
2023
- 2023-08-14 CN CN202311018642.XA patent/CN117017371A/en active Pending
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