Blockage detection device for endoscope working channel

Abstract

The utility model discloses a device for checking the obstruction of an endoscope working channel, comprising a traction member and a detection member, wherein the traction member is arranged in an elongated shape and has a first end for passing through the working channel and a second end arranged opposite to the first end, the detection member is arranged at the second end and is used for passing through the working channel under the traction of the traction member, the detection member has a radial dimension larger than the traction member, the radial periphery of the detection member is in sliding contact with the inner wall of the working channel, when there are tiny foreign objects or protrusions inside the working channel, the detection member will be stuck in the working channel, thereby being able to detect the obstruction condition of the working channel of the endoscope and more accurately detect tiny defects in the working channel.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a blockage inspection device for an endoscope working channel. Background Art

[0002] The insertion portion of the endoscope usually includes a working channel, which is usually used to transport fluids or instruments. After the endoscope is assembled, the working channel needs to be checked to confirm whether the interior is unobstructed.

[0003] The existing detection method usually uses a medical guide wire to pass through the working channel. If it can pass smoothly, it means that the working channel is unobstructed. Otherwise, there is an abnormality in the working channel and it needs to be reworked or scrapped. However, the above method cannot detect tiny foreign matter or tiny defects on the inner wall of the working channel, and the detection accuracy is insufficient. Utility Model Content

[0004] The utility model aims to provide a blockage inspection device for an endoscope working channel, which can detect minute defects in the endoscope working channel and improve the detection accuracy.

[0005] In order to solve the above technical problems, the utility model provides a device for checking the obstruction of an endoscope working channel, comprising:

[0006] An obstruction inspection device for an endoscope working channel, characterized by comprising:

[0007] a traction member, the traction member is elongated and has a first end and a second end that are oppositely arranged in the length direction, wherein the first end is used to pass through the working channel; and

[0008] A detection member is arranged at the second end, and is used to pass through the working channel under the traction of the traction member. The radial size of the detection member is larger than that of the traction member, and the radial outer periphery of the detection member is used to slide in contact with the inner wall of the working channel.

[0009] Optionally, the designed inner diameter of the working channel is R1, the actual inner diameter is R2, the design tolerance is D, and the maximum outer diameter R of the detection element is greater than or equal to R1-D and less than or equal to R2.

[0010] Optionally, the end surface of the first end of the traction member is connected to the outer peripheral surface of the traction member through an arc chamfer; and / or,

[0011] The end surface of the traction member at the first end is arranged to be an outwardly convex curved surface.

[0012] Optionally, the detection member is spherical.

[0013] Optionally, the detection member is a plug gauge, and the axial direction of the detection member extends along the length direction of the traction member.

[0014] Optionally, the traction member is made of shape memory alloy or stainless steel; and / or,

[0015] The material of the detection element is shape memory alloy or stainless steel.

[0016] Optionally, a connecting section is provided between the traction member and the detection member, the outer diameter of the connecting section is gradually increased in a direction from the traction member to the detection member, and the outer peripheral surface of the connecting section is provided in a concave curved surface.

[0017] Optionally, the traction member and the detection member are integrally formed; or,

[0018] The traction member and the detection member are welded into one body.

[0019] Optionally, the detection member is detachably connected to the traction member.

[0020] Optionally, the detection member is axially penetrated with a through hole, the traction member passes through the through hole, and is clamped at an outer end side of the through hole away from the first end through a clamping portion arranged at the second end of the traction member.

[0021] The technical solution provided by the utility model has the following advantages:

[0022] The utility model provides a blockage inspection device for an endoscope working channel, comprising a traction member and a detection member, wherein the traction member is elongated and has a first end for passing through the working channel and a second end arranged opposite to the first end, the detection member is arranged at the second end and is used to pass through the working channel under the traction of the traction member, the detection member is larger in radial direction than the traction member, the outer periphery of the detection member in radial direction is in sliding contact with the inner wall of the working channel, when there are tiny foreign objects or protrusions inside the working channel, the detection member will be stuck in the working channel, thereby being able to detect the blockage condition of the working channel of the endoscope and more accurately detect tiny defects in the working channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1A schematic diagram of the three-dimensional structure of a first embodiment of a blockage inspection device for an endoscope working channel provided by the utility model;

[0025] Figure 2 for Figure 1 A front view of the middle blockage inspection device;

[0026] Figure 3 A schematic diagram of the three-dimensional structure of a second embodiment of a blockage inspection device for an endoscope working channel provided by the utility model;

[0027] Figure 4 for Figure 3 A front view of the middle blockage inspection device;

[0028] Figure 5 A front view of a third embodiment of a blockage inspection device for an endoscope working channel provided by the utility model;

[0029] Figure 6 for Figure 5 Cross-sectional view of the blockage detection device.

[0030] Description of reference numerals:

[0031] 100 - blocking inspection device; 10 - traction member; 11 - second end; 12 - clamping portion; 20 - detection member; 21 - through hole; 30 - connecting section. DETAILED DESCRIPTION

[0032] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0034] See also Figures 1 to 6 The utility model discloses a blockage inspection device 100 for an endoscope working channel. The blockage inspection device 100 is used to detect the accuracy of the inner diameter of the endoscope working channel and the smoothness and integrity of the inner wall of the working channel. The working channel of an endoscope is generally arranged at the rear of its head end, and is used to transport liquids such as tissue fluid, cooling liquid, flushing liquid, etc. Some working channels can also be used to transport instruments.

[0035] Specifically, the obstruction inspection device 100 includes a traction member 10 and a detection member 20, wherein the traction member 10 is arranged in an elongated shape to have a first end and a second end 11 arranged opposite to each other in the length direction, wherein the first end is used to pass through the working channel. Specifically, it can be a traction rope or traction wire with a slender shape. The traction member 10 should have a certain toughness and good durability, and its material is preferably a metal with a certain hardness, so that the user can operate to pass the traction member 10 through the working channel. In an optional embodiment, the material of the obstruction inspection device 100 can be a shape memory alloy, such as a copper-aluminum-zinc alloy, a nickel-titanium alloy or an iron-titanium alloy. In this way, for a working channel with some bends or bends in shape, the traction member 10 can also pass through smoothly, and even if the traction member 10 hits the inner wall of the working channel and bends, it is easy to restore the shape and is not easy to damage the inner wall of the working channel. The material of the obstruction inspection device 100 can also be stainless steel, so that it has good durability, is easy to weld and process, and has a lower production cost.

[0036] The detection member 20 is arranged at the second end 11 of the traction member 10. The detection member 20 is used to pass through the working channel under the traction of the traction member 10. The detection member 20 is larger in radial direction than the traction member 10. The outer periphery of the detection member 20 in radial direction is used to slide in contact with the inner wall of the working channel. In this way, when there are tiny foreign objects or protrusions inside the working channel, or the inner diameter of the working channel is too small, the detection member 20 will be stuck in the working channel, so that the obstruction of the working channel of the endoscope can be detected, and the tiny defects in the working channel can be checked more accurately.

[0037] On the basis of the previous embodiment, the designed inner diameter of the working channel is R1, the actual inner diameter is R2, and the design tolerance is D. At this time, the maximum outer diameter R of the detection member 20 should satisfy: greater than or equal to R1-D, and less than or equal to R2. Such a size setting ensures that the detection member 20 can effectively contact the inner wall of the working channel, and can reliably detect whether the working channel is blocked or the dimensional accuracy is insufficient, and there are minor defects on the inner wall even in the case of design tolerance.

[0038] It is understood that before the detection begins, the first end of the traction member 10 needs to be operated to pass through the working channel. In order to avoid the end of the traction member 10 from scratching or bumping the inner wall of the working channel, it is preferred that the end face of the first end of the traction member 10 is connected to the outer peripheral surface of the traction member 10 through an arc chamfer; and / or the end face of the first end of the traction member 10 is set as a convex curved surface. This structure helps to reduce the friction when the traction member 10 passes through the working channel, helps the first end to pass through the working channel smoothly, and avoids the sharp structure from scratching the inner wall of the working channel, causing the inner wall to be accidentally damaged.

[0039] See also Figures 1 to 4The traction member 10 and the detection member 20 are preferably integrated, so that the structural strength of the entire inspection device ensures its stability and reliability during the inspection process. Optionally, the material of the detection member 20 is consistent with that of the traction member 10. Specifically, the traction member 10 and the detection member 20 can be integrally formed or welded together. It can be understood that the production process can be selected according to the specific material. For example, when the traction member 10 and the detection member 20 are made of shape memory alloy, the traction member 10 and the detection member 20 are preferably integrally formed, and when the traction member 10 and the detection member 20 are made of stainless steel, the two can be welded together.

[0040] It can be understood that the outer diameter of the detection member 20 is larger than that of the traction member 10. In order to achieve a smooth transition connection between the two, in a preferred embodiment, refer to Figures 1 to 4 A connecting section 30 is provided between the traction member 10 and the detection member 20. The outer diameter of the connecting section 30 is gradually increased in the direction from the traction member 10 to the detection member 20, and the outer peripheral surface of the connecting section 30 is provided in a concave curved surface. In this way, the size between the traction member 10 and the detection member 20 will not suddenly change, resulting in a sharp surface. The two are transitioned by a smooth curved surface, which avoids scratches and accidental damage to the inner wall of the working channel when the traction member 10 pulls the detection member 20 through the working channel, so that the detection member 20 can smoothly pass through the working channel under a smaller traction force.

[0041] The specific shape and size of the detection member 20 can be selected as needed. In the first embodiment provided by the present utility model, please refer to Figure 1 and Figure 2 , the detection member 20 is set in a spherical shape. Specifically, it can be a true sphere or an ellipsoid. It should be noted that the detection member 20 is set in a spherical shape, and its shape can be a complete sphere or a partial sphere, and its outer surface should be a smooth curved surface. In this way, when the detection member 20 passes through the working channel, its outer surface is in line contact with the inner wall of the working channel, and the friction force is small, so that it can easily pass through the working channel even if a small traction force is provided. In addition, the outer surface of the detection member 20 is smooth and round, and it is not easy to damage the working channel.

[0042] In the second embodiment provided by the present utility model, please refer to Figure 3 and Figure 4 The detection member 20 is a columnar plug gauge, and the axial direction of the detection member 20 extends along the length direction of the traction member 10. In this way, a plug gauge of a suitable size can be selected for processing according to the detection requirements to manufacture the inspection device. The detection member 20 has higher dimensional accuracy and is easy to manufacture. The detection member 20 is not easy to shake when sliding in the working channel, and the detection accuracy is higher.

[0043] In the third embodiment provided by the present utility model, please refer to Figure 5 and Figure 6 , the detection member 20 is detachably connected to the traction member 10. It can be understood that different endoscopes have different lengths and inner diameters of working channels. Through the structure in which the traction member 10 and the detection member 20 are detachably connected, traction members 10 of different lengths can be selected according to different working channels to be connected to the detection member 20 of appropriate size, thereby improving the versatility and flexibility of the inspection device.

[0044] Furthermore, the detection member 20 is provided with a through hole 21 in the axial direction, and the traction member 10 passes through the through hole 21 and is clamped at the outer end side of the through hole 21 away from the first end through a clamping portion 12 provided at the second end 11 of the traction member 10. The specific structure of the clamping portion 12 can be various, for example, it can be a clamping block detachably clamped at the second end 11 of the traction member 10, or it can be a knot structure formed by bending and winding the traction member 10. This structure is simple in design and low in manufacturing cost, and can also provide a stable clamping effect to ensure safety during the detection process.

[0045] Obviously, the above described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, ordinary technicians in this field can make other different forms of changes or modifications without creative work, which should fall within the scope of protection of the utility model.

Claims

1. A device for checking the obstruction of an endoscope working channel, characterized in that: include: A traction member, the traction member is arranged in an elongated shape and has a first end and a second end arranged opposite to each other in the length direction, wherein the first end is used to pass through the working channel; as well as, A detection member is arranged at the second end, and is used to pass through the working channel under the traction of the traction member. The radial size of the detection member is larger than that of the traction member, and the radial outer periphery of the detection member is used to slide in contact with the inner wall of the working channel.

2. The obstruction inspection device for an endoscope working channel according to claim 1, characterized in that: The designed inner diameter of the working channel is R1, the actual inner diameter is R2, the design tolerance is D, and the maximum outer diameter R of the detection element is greater than or equal to R1-D and less than or equal to R2.

3. The obstruction inspection device for an endoscope working channel according to claim 1, characterized in that: The end surface of the traction member at the first end is connected to the outer peripheral surface of the traction member through an arc chamfer; and / or, The end surface of the traction member at the first end is arranged to be an outwardly convex curved surface.

4. The obstruction inspection device for an endoscope working channel according to claim 1, characterized in that: The detection member is arranged in a spherical shape.

5. The obstruction inspection device for an endoscope working channel according to claim 1, characterized in that: The detection member is a plug gauge, and the axial direction of the detection member extends along the length direction of the traction member.

6. The obstruction inspection device for an endoscope working channel according to claim 1, characterized in that: The traction member is made of shape memory alloy or stainless steel; and / or, The material of the detection element is shape memory alloy or stainless steel.

7. The obstruction inspection device for an endoscope working channel according to claim 1, characterized in that: A connecting section is provided between the traction member and the detection member. The outer diameter of the connecting section is gradually increased in a direction from the traction member to the detection member, and the outer peripheral surface of the connecting section is provided in a concave curved surface.

8. The obstruction inspection device for an endoscope working channel according to any one of claims 1 to 7, characterized in that: The traction member and the detection member are integrally formed; or, The traction member and the detection member are welded into one body.

9. The obstruction inspection device for an endoscope working channel according to any one of claims 1 to 7, characterized in that: The detection member is detachably connected to the traction member.

10. The obstruction inspection device for an endoscope working channel according to claim 9, characterized in that: The detection member is axially penetrated with a through hole, the traction member passes through the through hole, and is clamped at the outer end side of the through hole away from the first end through a clamping portion arranged at the second end of the traction member.

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