CN219613806U - Tip cap and endoscope system - Google Patents
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- CN219613806U CN219613806U CN202320948350.5U CN202320948350U CN219613806U CN 219613806 U CN219613806 U CN 219613806U CN 202320948350 U CN202320948350 U CN 202320948350U CN 219613806 U CN219613806 U CN 219613806U
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- 239000000243 solution Substances 0.000 description 4
- 210000004400 mucous membrane Anatomy 0.000 description 3
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- 239000002390 adhesive tape Substances 0.000 description 2
- 210000003459 common hepatic duct Anatomy 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
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- 238000007459 endoscopic retrograde cholangiopancreatography Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 210000000232 gallbladder Anatomy 0.000 description 2
- 230000002496 gastric effect Effects 0.000 description 2
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- 210000002445 nipple Anatomy 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
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- 206010051341 Bile duct stenosis Diseases 0.000 description 1
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- 241000316887 Saissetia oleae Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
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- 210000003484 anatomy Anatomy 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000013 bile duct Anatomy 0.000 description 1
- 210000003445 biliary tract Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
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- 239000011248 coating agent Substances 0.000 description 1
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- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
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Landscapes
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Abstract
The utility model provides a front end cap and an endoscope system, and relates to the technical field of medical equipment, wherein the front end cap comprises a cap body with a hollow channel, the cap body comprises a connecting section and a working section, the connecting section is connected with the front end of an endoscope, and the working section is positioned in front of the front end of the endoscope; the cap body is provided with a visual mark. The visual mark is arranged on the front end cap, when the front end cap falls off from the front end of the endoscope and falls into the human body, the front end cap can be rapidly observed by the endoscope, so that the front end cap is taken out, the searching time is shortened, and the safety of an operation is improved.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to an end cap and an endoscope system.
Background
During endoscopy, due to the fact that mucous membrane tissues in front of the lens are shielded, and the lumen is bent, wrinkles and the like, the lens can be shielded, the visual field and the operation space of the endoscope are affected, and the movement, the examination and the operation of the endoscope are interfered. In addition, secretions and intraoperative blood can also obscure the view of the lens.
Therefore, in the prior art, a doctor installs a cylindrical transparent tip cap at the front end of the endoscope to open the tissue in front of the lens, providing the view and operation space of the endoscope.
However, when the endoscope moves, particularly in the process of retracting outwards, the front end cap has the risk of falling off from the front end of the endoscope, the front end cap is colorless and transparent, and is not easy to find when falling into a human body, so that potential safety hazards exist.
Disclosure of Invention
The utility model aims to provide a tip cap and an endoscope system, which are used for solving the technical problem that the tip cap is inconvenient to find after falling off from the tip of an endoscope in the existing endoscope system.
In a first aspect, the present utility model provides an end cap comprising: the cap body comprises a connecting section and a working section, wherein the connecting section is connected with the front end of the endoscope, and the working section is positioned in front of the front end of the endoscope;
the cap body is provided with a visual mark.
Further, the visual mark comprises at least one of a printed colored mark, a laser inscription, a frosted structure, or a relief structure.
Further, the visual mark is provided with an alignment line, and when the front end cap is inserted into the front end of the endoscope, the alignment line is used for prompting the front end of the endoscope to be inserted into the alignment line, and stopping continuous insertion, so that one side of the alignment line forms a connecting section, and the other side forms a working section.
Furthermore, the length L of the working section is within the range of 1 mm-10 mm.
Further, the maximum outer diameter OD of the cap body max The value range of (2) is less than or equal to OD max ≤6mm。
Further, the visual indicia includes at least two alignment lines spaced along the length of the end cap to form working segments of different lengths.
Further, the cap body is marked with a scale value corresponding to the alignment line, and the scale value is used for showing the length value of the working section when the front end of the endoscope is aligned with the alignment line.
Further, the visual mark comprises a first concave-convex structure arranged on the inner wall of the cap body, and when the cap body is sleeved outside the front end of the endoscope, the first concave-convex structure is used for being matched and fixed with a second concave-convex structure on the outer wall of the front end of the endoscope so as to prevent the front end cap from falling off from the front end of the endoscope; wherein, one of the first concave-convex structure and the second concave-convex structure is convex, and the other is concave.
Further, along the length direction of the front end cap, the number of the first concave-convex structures is at least two and is arranged at intervals to form working sections with different lengths.
Further, a round angle or a chamfer is formed between the rear end face of the connecting section and the circumferential outer wall.
Further, the outer diameter of the working section is constant or gradually decreases along the direction from the rear end to the front end of the front end cap.
Further, the visual mark is positioned on the inner wall or the outer wall of the cap body.
In a second aspect, the present utility model provides an endoscope system comprising the tip cap described above.
The utility model has at least the following advantages or beneficial effects:
the front end cap provided by the utility model comprises a cap body with a hollow channel, wherein the cap body comprises a connecting section and a working section, the connecting section is connected with the front end of an endoscope, and the working section is positioned in front of the front end of the endoscope; the cap body is provided with a visual mark.
The visual mark is arranged on the front end cap, when the front end cap falls off from the front end of the endoscope and falls into the human body, the front end cap can be rapidly observed by the endoscope, so that the front end cap is taken out, the searching time is shortened, and the safety of an operation is improved.
The endoscope system provided by the utility model comprises the front end cap. Because the endoscope system provided by the utility model refers to the end cap, the endoscope system also has the advantage of the end cap.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an end cap according to embodiment 1 of the present utility model;
FIG. 2 is a front view of the front end cap of FIG. 1;
FIG. 3 is a cross-sectional view of the end cap of FIG. 1;
FIG. 4 is a schematic view of the end cap of FIG. 1 after attachment to an endoscope;
FIG. 5 is a schematic view of another end cap according to embodiment 1 of the present utility model;
FIG. 6 is a front view of the front end cap of FIG. 5;
FIG. 7 is a cross-sectional view of the end cap of FIG. 5;
FIG. 8 is a schematic view of the end cap of FIG. 5 after attachment to an endoscope;
FIG. 9 is a schematic view of a further end cap according to embodiment 1 of the present utility model;
FIG. 10 is a cross-sectional view of the end cap provided in example 2 of the present utility model;
FIG. 11 is a schematic view of the connection of the tip cap to the endoscope according to embodiment 2 of the present utility model.
Icon: 1-a connecting section; 2-working section; 3-the front end of the endoscope; 31-bulge; 4-visualizing the mark; 41-alignment lines; 5-chamfering; 6-recessing.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in fig. 1-8, the front end cap provided by the utility model comprises a cap body, wherein the cap body is of a circumferential structure, and a hollow channel penetrating through the cap body is arranged inside the cap body. The endoscope has a certain range of visual field blind areas due to the angle of the lens. The instrument extends from the endoscope forceps channel and is positioned in a visual field blind area before entering the endoscope visual field. At this time, the instrument is constrained by the inner wall in the hollow channel, and the instrument cannot contact mucous membrane tissues and cannot damage mucous membranes in the effective working length of the front end cap.
The cap body includes linkage segment 1 and working segment 2, linkage segment 1 and scope front end 3 can adopt interference fit to be connected, increase joint strength, reduce the risk of droing.
The maximum outer diameter OD of the cap body max The value range of (2) is less than or equal to OD max Less than or equal to 6mm, the design basis is as follows:
(1) according to human anatomy, the biliary and pancreatic system of a normal human body is the thickest biliary duct (6-9 mm), the thinnest pancreatic duct (2-3 mm), and other ducts are the biliary duct (2-4 mm), the hepatic duct (4-6 mm) and the like.
(2) In biliary surgery or ERCP surgery, endoscopes need to move smoothly in the biliary-pancreatic system, and probe and operate on bile ducts/hepatic ducts/pancreatic ducts or the gall bladder according to different conditions. Therefore, the maximum outer diameter should also meet the minimum value of the diameter of each tube after the endoscope is mounted with the end cap. Therefore, the maximum outer diameter of the front end cap is less than or equal to 6mm (namely the minimum diameter of the common bile duct), and a plurality of smaller diameter specifications are designed according to different operation requirements.
(3) The smaller the diameter of the tip cap, the thinner the wall thickness. If the diameter becomes smaller, the opening effect of the working section 2 on the endoscope front cavity is poor, the wall thickness becomes thinner, the radial supporting force of the working section 2 becomes poor, and the working section is flattened, bent, twisted and other anomalies occur to influence the operation of the endoscope. Therefore, on the premise of meeting the smoothness of the movement of the biliary pancreatic duct, the maximum outer diameter should have the minimum parameter value, namely more than or equal to 2mm (namely the minimum diameter of the pancreatic duct).
To sum up, OD is less than or equal to 2mm max ≤6mm。
The working section 2 is positioned in front of the endoscope front end 3, the length of the working section 2 increases the front end length of an endoscope system, the position of the endoscope is stabilized, lens displacement or visual field loss is prevented, and particularly difficult parts such as the nipple pot abdomen and the like are probed in ERCP operation.
The length L of the working section 2 is within the range of 1 mm-10 mm. The design basis is as follows:
(1) if L is less than 1mm, the distance that the working section 2 extends out of the endoscope front end 3 is too short, the cap body is not in the field of view of the lens, and the end cap is seen under the endoscope, so that the follow-up operation is influenced. Meanwhile, the working section 2 is too short, has poor effect on tissue distraction, loses the functions of improving the visual field and operating work, and also loses the functions of fixing stones and safely crushing stones.
(2) If L is more than 10mm, the working section 2 extends out of the front end 3 of the endoscope for too long, so that the rigid structure of the endoscope is too long, and the over-bending performance of the endoscope in the biliary pancreatic duct is affected. Meanwhile, when the instrument is used for operation, the instrument needs to extend out of the endoscopic forceps channel for a longer length, and the longer the extending length is, the worse the instrument operability is, and the higher the operation difficulty is.
In conclusion, L is more than or equal to 1mm and less than or equal to 10mm.
The inner diameter of the connecting section 1 is preferably smaller than the outer diameter of the front end of the matched endoscope, so that the front end cap is in interference fit with the endoscope, friction resistance is increased, connecting force between the front end cap and the endoscope is increased, and the risk of falling off from the endoscope in operation is reduced. The gastrointestinal endoscope operation can use the medical adhesive tape to fix the end cap and the endoscope, but no literature and research prove that the medical adhesive tape can be used in the gall bladder pancreatic duct, so that the connection effect is enhanced through interference fit, and the gastrointestinal endoscope operation is a safe and effective mode.
The endoscope front end 3 is provided with a front end cap to provide and maintain the endoscope visual field and improve the probing visual field and the operation space.
The visual mark 4 is arranged on the front end cap, when the front end cap falls off from the front end 3 of the endoscope and falls into the human body, the front end cap can be rapidly observed by the endoscope, so that the front end cap is taken out, the searching time is shortened, and the safety of the operation is improved.
Further, the visual mark 4 includes at least one of a printed colored mark, a laser inscription, a frosted structure, or a concave-convex structure.
The visual mark 4 may be, but is not limited to, a mark that is printed with a color that is convenient to implement and relatively easy to observe, such as a portion of the cap being printed black or green, etc.
The laser inscription can form gray and black scales or marks and the like on the surface of the cap body, and is convenient and visual to observe.
The frosted structure or the concave-convex structure is transparent in color, but the overall structure is not uniform because of structural change, and when the illumination mechanism on the endoscope strikes light on the frosted structure or the concave-convex structure, reflection and/or refraction phenomena can occur, so that the aim of easy observation can be realized.
In this embodiment, the visual mark 4 has an alignment line 41, and when the tip cap is plugged into the endoscope tip 3, the alignment line 41 is used to prompt the endoscope tip 3 to plug into the alignment line 41, so that one side of the alignment line 41 forms the connection section 1 and the other side forms the working section 2.
The visual mark 4 can be only one line with color, the line forms an alignment line 41, and the arrangement of the alignment line 41 can provide a prompt for the installation of the tip cap, so that a user can conveniently combine the endoscope tip 3 with the tip cap. The visual mark 4 may also be a surface with a certain length in the length direction of the cap body, wherein the edge of the surface near the front end of the cap body is located between the front end and the rear end of the cap body to form the alignment line 41, and the cap body can be more easily observed by adopting a scheme of printing a surface with color, wherein the length of the surface with color can be valued in a range of 0.1mm-6mm.
As shown in fig. 9, further, the visual marker 4 may include at least two alignment lines 41 spaced along the length of the end cap to form working segments 2 of different lengths.
The visual mark 4 may be in the form of a plurality of scale marks, each scale mark forms an alignment line 41, when the front end cap is abutted to the endoscope, the endoscope front end 3 is inserted from the rear end of the front end cap and gradually inserted into the front end face of the front end cap to be aligned with one alignment line 41, so as to assist the user in knowing the length of the working section 2, and when facing different working scenes, the user can also adjust the alignment of the endoscope front end 3 with the other alignment line 41, so as to obtain the working section 2 with different lengths. The working section 2 has different extending lengths and is suitable for different operations.
Typical working sections 2 may have a desired length in the range of 1-10mm; the spacing between adjacent alignment lines 41 on the cap may be 1mm or 2mm.
Preferably, the length of the working section 2 may range from 2 to 8mm. For example, on the cap, three alignment lines 41 may be provided, representing working segments 2 of 3mm,4mm and 6mm length, respectively, the three alignment lines 41 being spaced 1mm and 2mm apart, respectively.
A scale may be marked above the alignment line 41, and the user may more easily grasp the length of the working section 2 at this time when the endoscope tip 3 is aligned with the alignment line 41. The scale values may be marked above each alignment line 41, or some alignment lines 41, for example, the length of the working section 2 is an integer value, may be marked above the alignment lines, so that the scale values are prevented from being crowded, and the observation is inconvenient.
A round angle or a chamfer angle 5 can be formed between the rear end face of the connecting section 1 and the circumferential outer wall, so that steps between the connecting section and an endoscope are reduced, and biliary tract operation is taken as an example, when the endoscope is retracted, interference of a front end cap and a bile duct stenosis or calculus is reduced, interference of the front end cap and an endoscope forceps channel or a forceps lifter is reduced, and the front end cap is prevented from falling off.
In one embodiment, the outer diameter of the working section 2 is constant in the direction of the rear end of the end cap toward the front end. The cylindrical working section 2 is mainly used for expanding the cavity, improving the visual field and the operation space, and assisting the operation of lithotripsy, stone extraction, polyp extraction and the like.
In one embodiment, the outer diameter of the working section 2 gradually decreases and tapers in the direction of the rear end of the tip cap toward the front end. The conical working section 2 is mainly used for visual intubation of the nipple, and stabilizes an endoscope (ampulla exploration), passes through difficult positions such as stenosis or cholecyst canal and the like. The inner diameter of the inner hole at the distal end of the conical working section 2 is matched with the forceps channel size of the endoscope, and the endoscope can pass through the instrument without influencing the liquid injection and suction functions of the endoscope.
The visual mark 4 can be arranged on the inner wall of the cap body or the outer wall.
The material of the front end cap can be TPU or silica gel, has proper hardness, is not too soft, has supporting force, is not easy to deform, and maintains the operation vision and space; the material has high viscosity, high elasticity and high coating pressure, and can be matched with an endoscope to increase static friction force, increase connection strength and reduce falling risk.
Example 2
As shown in fig. 10 and 11, the visual marker 4 may include a recess 6 provided on the inner wall of the cap body in this embodiment, unlike embodiment 1. The recess 6 achieves the object of facilitating observation by reflection and/or refraction of light. Correspondingly, a bulge 31 may be provided on the outer wall of the endoscope, wherein the recess 6 and the bulge 31 may each be annular. In other embodiments, the protrusions 31 may be provided on the inner wall of the cap and the recesses 6 may be provided on the outer wall of the endoscope.
When the front end cap is abutted with the endoscope, the front end of the endoscope is inserted from the rear end of the front end cap and gradually inserted into the bulge 31 to enter the concave 6, and the concave 6 is clamped with the bulge 31 of the endoscope so as to prevent the front end cap from falling off from the front end 3 of the endoscope, and the connection firmness of the front end cap and the endoscope is improved.
Along the length direction of the end cap, the number of the concave parts 6 is at least two and arranged at intervals, and a user can selectively clamp the convex parts 31 and one concave part 6 correspondingly so as to form working sections 2 with different lengths. The working section 2 has different extending lengths and is suitable for different operations.
The endoscope system provided by the utility model comprises the front end cap. Because the endoscope system provided by the utility model refers to the end cap, the endoscope system also has the advantage of the end cap.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (13)
1. An end cap, comprising: the cap body with the hollow channel comprises a connecting section (1) and a working section (2), wherein the connecting section (1) is connected with the endoscope front end (3), and the working section (2) is positioned in front of the endoscope front end (3);
the cap body is provided with a visual mark (4).
2. The tip cap according to claim 1, wherein the visual indicia (4) comprises at least one of printed colored indicia, laser inscription, frosted structure, or relief structure.
3. The tip cap according to claim 1, characterized in that the visual marker (4) has an alignment line (41), the alignment line (41) being used to prompt the continued plugging of the endoscope tip (3) to the alignment line (41) when the tip cap is plugged into the endoscope tip (3), so that the alignment line (41) forms a connecting section (1) on one side and a working section (2) on one side.
4. The tip cap according to claim 1, characterized in that the length L of the working section (2) has a value ranging from 1mm to 10mm.
5. The tip cap of claim 1, wherein said cap body has a maximum outer diameter OD max The value range of (2) is less than or equal to OD max ≤6mm。
6. A cap according to claim 3, wherein the visual marking (4) comprises at least two alignment lines (41) spaced apart along the length of the cap to form working segments (2) of different lengths.
7. The tip cap according to claim 6, characterized in that said cap body is marked with a scale value corresponding to said alignment line (41), said scale value being used to show the length value of said working section (2) when said endoscope tip (3) is aligned with said alignment line (41).
8. The tip cap according to claim 1, wherein the visual marker (4) comprises a first concave-convex structure arranged on an inner wall of the cap body, and when the cap body is sleeved outside the endoscope tip (3), the first concave-convex structure is used for being matched and fixed with a second concave-convex structure on an outer wall of the endoscope tip (3) so as to prevent the tip cap from falling off from the endoscope tip (3); wherein one of the first concave-convex structure and the second concave-convex structure is a protrusion (31), and the other is a depression (6).
9. The tip cap according to claim 8, wherein the number of first relief structures is at least two and spaced apart along the length of the tip cap to form working segments (2) of different lengths.
10. A tip cap according to any of claims 1-9, characterized in that a fillet or chamfer (5) is formed between the rear end face of the connecting section (1) and the circumferential outer wall.
11. A tip cap according to any of claims 1-9, characterized in that the outer diameter of the working section (2) is constant or gradually decreasing in the direction of the tip cap's rear end towards the front end.
12. A cap according to any one of claims 1 to 9, wherein the visual marker (4) is located on the inner or outer wall of the cap body.
13. An endoscope system comprising the tip cap of any of claims 1-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320948350.5U CN219613806U (en) | 2023-04-24 | 2023-04-24 | Tip cap and endoscope system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320948350.5U CN219613806U (en) | 2023-04-24 | 2023-04-24 | Tip cap and endoscope system |
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| Publication Number | Publication Date |
|---|---|
| CN219613806U true CN219613806U (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320948350.5U Active CN219613806U (en) | 2023-04-24 | 2023-04-24 | Tip cap and endoscope system |
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| CN (1) | CN219613806U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117442239A (en) * | 2023-12-22 | 2024-01-26 | 四川省医学科学院·四川省人民医院 | Liquid sac and endoscope tip cap and endoscope using same |
-
2023
- 2023-04-24 CN CN202320948350.5U patent/CN219613806U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117442239A (en) * | 2023-12-22 | 2024-01-26 | 四川省医学科学院·四川省人民医院 | Liquid sac and endoscope tip cap and endoscope using same |
| CN117442239B (en) * | 2023-12-22 | 2024-02-27 | 四川省医学科学院·四川省人民医院 | Liquid sac and endoscope tip cap and endoscope using same |
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