Double-layer sleeve endoscope flushing sheath capable of independently flushing water

Abstract

The utility model discloses a double-layer sleeve endoscope flushing sheath capable of independently flushing water, which is characterized in that a flushing water pipe consists of a first sleeve and a second sleeve, an insertion part of an endoscope is arranged in the second sleeve in a penetrating manner, and a flushing water channel is formed between the inner wall of the first sleeve and the outer wall of the second sleeve, so that flushing water can flow out through the flushing water channel; meanwhile, one end of the flushing water channel forms an open end, and the other end of the flushing water channel forms a closed end, so that flushing water cannot flow into the connecting base to pollute the operation environment; furthermore, one end of the suction water pipe is arranged on the flushing water pipe, and the other end of the suction water pipe is connected with the negative suction pipeline, so that negative pressure gas can enter the suction water pipe from the negative suction pipeline to suck away flushing water flowing out of the flushing water pipe and liquid in the visual field at the front end of the endoscope, and therefore, it is ensured that an existing endoscope flushing and suction assembly is compact in structure; on the premise that the endoscope can be used in a narrow space, water flushing and water suction can be carried out synchronously and independently, and operation convenience and functionality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, in particular to the field of endoscope technology. BACKGROUND

[0002] In the process of diagnosis and treatment, water flow is usually injected to remove bloodstains or mucus in the field of view, and the liquid and secretion in the field of view are sucked away to provide a clear field of view for the doctor. In order to achieve this purpose, the endoscope is usually equipped with a water flushing and suction function.

[0003] A cavity mirror flushing and suction assembly is disclosed in Chinese Patent No. CN221690864U, which comprises a connecting base, a sleeve, and a flushing and suction pipe assembly. The sleeve is arranged on the connecting base, and the flushing and suction pipe assembly is arranged on the sleeve. A placement cavity is formed in the connecting base, which can accommodate the front end base of the cavity mirror and make the insertion part of the front end of the cavity mirror pass through the sleeve. A clamping groove is formed in the side wall of the placement cavity, which matches the optical fiber interface on the front end of the cavity mirror and can clamp and position the optical fiber interface on the front end of the cavity mirror when the front end base of the cavity mirror is inserted into the placement cavity. This scheme realizes a set of external cavity mirror flushing and suction assembly that can adapt to different specifications of cavity mirrors through the cooperation of the optical fiber interface on the cavity mirror, effectively reduces the use cost, and improves the practicality.

[0004] However, the cavity mirror flushing assembly provided by the above-mentioned scheme completes the water flushing and suction functions through the flushing and suction pipe. In the specific application process, a three-way valve is needed to connect the flushing and suction pipe to switch the water flushing and suction modes, which is complicated to operate. In some surgeries, water flushing and suction need to be performed simultaneously, but the existing flushing and suction assembly cannot meet the requirement of simultaneous and independent water flushing and suction.

[0005] Therefore, how to enable the endoscope to realize simultaneous water flushing and suction and improve the operation convenience and functionality of the endoscope has become a problem to be solved in the field. UTILITY MODEL CONTENTS

[0006] In view of the defects of the prior art, the purpose of the utility model is to provide a double-layer sleeve endoscope water flushing sheath that can realize independent flushing and suction of water.

[0007] In order to achieve the above-mentioned purpose, the double-layer sleeve endoscope water flushing sheath provided by the utility model comprises a connecting base, a flushing water pipe and a suction water pipe arranged in the connecting base, the connecting base is connected and matched with the endoscope, and the insertion part of the front end of the endoscope passes through the flushing water pipe,

[0008] The flush water pipe comprises a first sleeve and a second sleeve, the second sleeve is arranged in the first sleeve, the insertion part is arranged in the second sleeve, the first sleeve is connected to the water inlet pipe, and a gap is formed between the inner wall of the first sleeve and the outer wall of the second sleeve to form a flush water channel, one end of the flush water channel extends out of the connecting base to form an open end, and the other end is arranged in the connecting base to form a closed end.

[0009] One end of the suction water pipe extends out of the connecting base and is arranged on the flush water pipe, and the other end is connected to the negative suction pipe.

[0010] Further, the connecting base is provided with a coupling part that can move axially along the connecting base, the flush water pipe and the suction water pipe are arranged in the coupling part, and the water inlet pipe and the negative suction pipe that extend out of the connecting base are formed in the coupling part, respectively.

[0011] Further, the end region of the coupling part matched with the flush water pipe is formed with an expanding pipe opening with gradually increasing caliber.

[0012] Further, the first sleeve is configured as a straight pipe with equal outer diameter, and the inner diameter of the first end region is larger than the pipe diameter of the second sleeve, and the inner diameter of the second end region is matched with the pipe diameter of the second sleeve.

[0013] Further, the first sleeve is configured as a tapered pipe with gradually decreasing inner diameter from the first end to the second end, and the inner diameter of the first end is larger than the pipe diameter of the second sleeve, and the inner diameter of the second end is matched with the pipe diameter of the second sleeve.

[0014] Further, the first sleeve and the second sleeve are configured as pipes with the same cross section.

[0015] Further, the first sleeve and the second sleeve are configured as pipes with different cross sections.

[0016] Further, the first sleeve and the second sleeve are configured as coaxial distribution.

[0017] Further, the first sleeve and the second sleeve are configured as eccentric distribution.

[0018] The double-layer sleeve endoscope water flushing sheath provided by the utility model independently flushes water, the flushing water pipe is composed of the second sleeve penetrating in the first sleeve, the insertion part of the endoscope penetrates in the second sleeve, the first sleeve is connected with the water inlet pipeline, and the gap between the inner wall of the first sleeve and the outer wall of the second sleeve forms the flushing water channel, so that the flushing water can enter the flushing water pipe through the water inlet pipeline and flow out through the flushing water channel, the flushing water channel is extended out of the connecting base to form the open end at one end and is built in the connecting base to form the closed end at the other end, the water flow direction can be ensured, the flushing water cannot flow into the connecting base from the connecting gap between the first sleeve and the second sleeve, the surgical environment is prevented from being polluted, and the endoscope and the connected equipment are prevented from being damaged.

[0019] Further, one end of the suction water pipe is extended out of the connecting base and placed on the flushing water pipe, and the other end is connected with the negative suction pipeline, so that the negative pressure gas can enter the suction water pipe from the negative suction pipeline, and the flushing water flowing out of the flushing water pipe and the liquid in the front end field of view of the endoscope are sucked away, thereby, under the premise that the existing endoscope flushing and suction assembly structure is compact and the endoscope can be used in narrow space, the flushing water and the suction water are respectively synchronized and independently performed through the flushing water pipe and the suction water pipe, and the operation convenience and functionality are improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be further explained in combination with the drawings and specific embodiments.

[0021] Figure 1 The structure schematic view of the double-layer sleeve endoscope water flushing sheath provided by the utility model is shown in the figure.

[0022] Figure 2 The structure schematic view of the endoscope in the utility model is shown in the figure.

[0023] Reference signs:

[0024] 1. Connecting base; 11. Moving groove;

[0025] 2. Flushing water pipe; 21. First sleeve; 211. First end; 212. Second end; 22. Second sleeve;

[0026] 3. Suction water pipe;

[0027] 4. Endoscope; 41. Insertion part;

[0028] 5. Flushing water channel; 51. Open end; 52. Closed end;

[0029] 6. Connecting piece; 61. Water inlet pipeline; 611. Straight channel; 612. Buffer channel; 62. Negative suction pipeline; 63. Expansion pipe opening. PREFERRED EMBODIMENT

[0030] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific drawings.

[0031] Referring to Figure 1 , which shows an example of the double-layer sleeve endoscope water-jet sheath provided by the utility model.

[0032] As shown in the drawings, the double-layer sleeve endoscope water-jet sheath of the present example mainly comprises a connecting base 1, a water-jet pipe 2 and a suction pipe 3.

[0033] In combination with Figure 2 , the water-jet pipe 2 and the suction pipe 3 are arranged in the connecting base 1, and the connecting base 1 is connected and matched with the endoscope 4, so that the insertion part 41 at the front end of the endoscope 4 is arranged in the water-jet pipe 2. The water-jet pipe 2 comprises a first sleeve 21 and a second sleeve 22, the second sleeve 22 is arranged in the first sleeve 21, and the insertion part 41 is arranged in the second sleeve 22. The first sleeve 21 is connected with the water inlet pipe 61, and a gap is arranged between the inner wall of the first sleeve 21 and the outer wall of the second sleeve 22 to form a water-jet channel 5. One end of the water-jet channel 5 extends out of the connecting base 1 to form an open end 51, and the other end is arranged in the connecting base 1 to form a closed end 52, so that the water-jet pipe 2 can be filled with water from the water inlet pipe 61, and the water can flow out of the open end 51 through the water-jet channel 51 to flush the field of view at the front end of the endoscope 4, and will not flow back into the connecting base 1, ensuring the sealing of the water-jet channel 51, preventing pollution of the operating environment, and damage to the endoscope 4 and the connected equipment endoscope 4.

[0034] Further, one end of the suction pipe 3 extends out of the connecting base 1 and is arranged on the water-jet pipe 2, and the other end is connected with the negative suction pipe 62, so that the negative pressure gas can enter the suction pipe 3 from the negative suction pipe 62, and the water flowing out of the water-jet pipe 2 and the liquid in the field of view at the front end of the endoscope 4 can be sucked away under the action of negative pressure, ensuring the clarity of the field of view at the front end of the endoscope 4. Thus, under the premise of ensuring the compact structure of the existing endoscope water-jet and suction assembly, the present endoscope water-jet sheath realizes the synchronous and independent flushing and suction of water through the water-jet pipe 2 and the suction pipe 3 respectively, improving the operation convenience and functionality.

[0035] Among them, the connecting base 1 is provided with a coupling piece 6 which can move axially along the connecting base 1, and the water-jet pipe 2 and the suction pipe 3 are arranged in the coupling piece 6, and the coupling piece 6 cooperates with the coupling piece 6 to form a moving assembly, so that the water-jet pipe 2 and the suction pipe 3 can move axially in the connecting base 1 synchronously, realizing the expansion and contraction of the water-jet pipe 2 and the suction pipe 3.

[0036] Specifically, the water inlet pipe 61 and the negative suction pipe 62 are formed in the coupling member 6 respectively, so that the flushing water pipe 2 and the suction water pipe 3 are arranged in the coupling member 6 and connected with the water inlet pipe 61 and the negative suction pipe 62 respectively.

[0037] Further, the water inlet pipe 61 is arranged on one side of the coupling member 6 and configured as a smooth pipe to reduce the hydraulic loss of the flushing water in the water inlet pipe 61, so as to reduce the pressure loss of the flushing water.

[0038] In some embodiments, the water inlet pipe 61 is further formed with a straight flow channel 611 and a buffer flow channel 612, the straight flow channel 611 is connected with the flushing water pipe 2 through the buffer flow channel 612, and the diameter of the buffer flow channel 612 is greater than that of the straight flow channel 611. After the flushing water enters the straight flow channel 611, it enters the buffer flow channel 612 with a larger diameter, which increases the flow area and diffuses and buffers in the buffer flow channel 612, reduces the friction resistance of the flushing water, and reduces the energy loss. Then the flushing water enters the flushing water pipe 2, so that the flushing water can maintain water pressure to flow out of the flushing water pipe 2, thereby effectively flushing the field of view at the front end of the endoscope 4.

[0039] In order to ensure the structural compactness of the existing endoscope flushing and suction assembly, not to increase the structure of the flushing and suction assembly, and to ensure that the endoscope 4 can effectively work in a narrow environment, after the endoscope 4 is connected with the connecting base 1, the insertion part 41 at the front end of the endoscope 4 can be arranged in the flushing water pipe 2 to flush the field of view at the front end of the endoscope.

[0040] Further, the end portion region of the coupling member 6 matched with the flushing water pipe 2 is formed with an expanding pipe mouth 63 with gradually increasing caliber, so that the insertion part 41 can enter the flushing water pipe 2 along the inner wall of the expanding pipe mouth 63 to realize blind insertion of the insertion part 41 and facilitate assembly of the insertion part 41.

[0041] Further, the flushing water pipe 2 is composed of a first sleeve 21 and a second sleeve 22, and the first sleeve 21 and the second sleeve 22 are matched to form a flushing water channel 5, so that the flushing water flows in the flushing water channel 5 after entering the flushing water pipe 2 from the water inlet pipe 61.

[0042] Specifically, the second sleeve 22 is arranged in the first sleeve 21, and the flushing water channel 5 is formed by the gap between the inner wall of the first sleeve 21 and the outer wall of the second sleeve 22, so that the flushing water pipe 2 forms a double-layer sleeve, the insertion part 41 is arranged in the second sleeve 22, so that the second sleeve 22 forms a protection mechanism for the insertion part 41, and the first sleeve 21 is connected with the water inlet pipe 61, so that the flushing water can enter the flushing water channel 5 from the water inlet pipe 61 without affecting the normal work of the insertion part 41.

[0043] Further, one end of the irrigation water channel 5 extends out of the connection base 1 to form an open end 51, so that the irrigation water can flow out of the open end 51 to flush the field of view of the front end of the endoscope, and the other end of the irrigation water channel 5 is built into the connection base 1 to form a closed end 52 to seal the irrigation water channel 5, so as to ensure the flow direction of the irrigation water and prevent the irrigation water from flowing back into the connection base 1, thereby polluting the surgical environment and damaging the endoscope 4 and the equipment connected thereto.

[0044] The specific structure of the irrigation water channel 5 is illustrated below.

[0045] In this example, the first sleeve 21 is configured as a straight pipe with the same outer diameter, the first end 211 is open, and the inner diameter of the first end 211 is larger than the pipe diameter of the second sleeve 22, so that a gap is formed between the inner wall of the first sleeve 21 and the outer wall of the second sleeve 22, thereby forming the irrigation water channel 5 and forming the open end 51 of the irrigation water channel 5 at the first end 211 of the first sleeve 21, so that the irrigation water flows out of the open end 51.

[0046] Further, the inner diameter of the second end 212 region of the first sleeve 21 is adapted to the pipe diameter of the second sleeve 23, so that the second end 212 region of the first sleeve 21 is tightly abutted with the second sleeve 23 without a gap, thereby forming the closed end 52 of the irrigation water channel 5, so that the irrigation water cannot flow out of the closed end 52.

[0047] In some embodiments, the first sleeve 21 can also be configured as a tapered pipe with the inner diameter gradually decreasing from the first end 211 to the second end 212, and the inner diameter of the first end 211 is larger than the pipe diameter of the second sleeve 22, and the inner diameter of the second end 212 is adapted to the pipe diameter of the second sleeve 22, so that a tapered irrigation water channel 5 with gradually decreasing diameter is formed between the first sleeve 21 and the second sleeve 22, and the second sleeve 22 is connected at the second end 212 of the first sleeve 21 to form the closed end 52 of the irrigation water channel 5.

[0048] Further, the tapered irrigation water channel 5 can accelerate the flow of irrigation water during the flow process to increase the flow rate and flow volume, thereby improving the delivery efficiency of the irrigation water and the flushing effect on the field of view of the front end of the endoscope 4.

[0049] The first sleeve 21 and the second sleeve 22 thus configured can cooperate to form the irrigation water channel 5, and one end of the irrigation water channel 5 extending out of the connection base 1, i.e. the first end 211 of the first sleeve 21, forms the open end 51, and the other end of the irrigation water channel 5 built into the connection base 1, i.e. the second end 212 of the first sleeve 21, forms the closed end 52, so that the irrigation water enters the irrigation water pipe 2, flows along the irrigation water channel 5, and flows out of the open end 51, while not flowing back out of the closed end 52, thereby ensuring the sealing of the irrigation water channel 5 and the working stability of the endoscope 4.

[0050] Further, in the present example, the first sleeve 21 and the second sleeve 22 are configured as coaxially distributed circular cross-section pipes to reduce the difficulty of assembly, while making the flushing water passage 5 form a circular cross-section to reduce the flow resistance of the flushing water and improve the flow uniformity.

[0051] In some embodiments, the first sleeve 21 and the second sleeve 22 can also be configured as eccentrically distributed special-shaped cross-section pipes, as long as a gap is provided between the first sleeve 21 and the second sleeve 22 to form the flushing water passage 5, so that the first sleeve 21 and the second sleeve 22 can be adaptively adjusted according to the working space of the endoscope 4, ensuring the structural compactness of the endoscope flushing assembly, so that the endoscope 4 can effectively work in a narrow environment.

[0052] Here, the lengths of the first sleeve 21 and the second sleeve 22 are not limited, and the first sleeve 21 and the second sleeve 22 can be adaptively adjusted according to specific applications and configured to have the same or different lengths.

[0053] The flushing water pipe 2 and the coupling 6 thus formed cooperate to realize the flushing function of the present endoscope flushing sheath, while ensuring the water flow pressure and preventing the flushing water from flowing back to pollute the surgical environment and damage the endoscope and the connected equipment.

[0054] In order to enable the present endoscope flushing sheath to independently and synchronously perform flushing and suction, the suction pipe 3 is arranged in the coupling 6, one end of which extends out of the connecting base 1 and is placed on the flushing water pipe 2 (the first sleeve 21), and the other end is connected to the negative suction pipe 62 formed on the other side of the coupling 6, so that the negative pressure gas enters the suction pipe 3 from the negative suction pipe 62, and the liquid in the field of view at the front end of the endoscope 4 is sucked away under the action of negative pressure.

[0055] Further, the length of the suction pipe 3 extending out of the connecting base 1 is preferably greater than the length of the flushing water pipe 2 extending out of the connecting base 1, so that the suction pipe 3 can extend to the position where suction is needed to suck out the cut-off tissue or the ground bone powder after flushing.

[0056] Thus, the flushing water pipe 2 and the suction pipe 3 cooperate to be respectively used for flushing and suction, and can realize the independent working and synchronous working of the flushing and suction functions of the present endoscope flushing sheath without increasing the structure of the endoscope flushing assembly, and ensuring that the endoscope can be used in a narrow space.

[0057] In order to ensure that the water inlet pipe 61 and the negative suction pipe 62 on the connecting piece 6 are stably connected with the flushing water pipe 2 and the suction water pipe 3 respectively when the connecting piece 6 moves axially inside the connecting base 1, a moving groove 11 corresponding to the water inlet pipe 61 and the negative suction pipe 62 is formed on each side of the connecting base 1, and the water inlet pipe 61 and the negative suction pipe 62 extend out of the connecting base 1 and are arranged in the moving groove 11, so that the water inlet pipe 61 and the negative suction pipe 62 move axially along the moving groove 11 synchronously when the connecting piece 6 moves axially inside the connecting base 1, and the water inlet pipe 61 and the negative suction pipe 62 are stably connected with the flushing water pipe 2 and the suction water pipe 3, thereby ensuring the reliability of the endoscope flushing sheath.

[0058] The working process of the endoscope flushing sheath in the specific application of the utility model is illustrated below, and it should be noted that the content described herein is only a specific application example of the utility model and does not limit the utility model.

[0059] The flushing water and the suction water are taken as examples.

[0060] The flushing water enters the water inlet pipe 61 of the connecting piece 6, enters the flushing water pipe 2 through the water inlet pipe 61, flows along the flushing water channel 5 formed between the first sleeve 21 and the second sleeve 22, and finally flows out of the open end 51 of the flushing water channel 5 to flush the field of view at the front end of the endoscope 4.

[0061] During the flow of the flushing water, the closed end 52 of the flushing water channel 5 seals the flushing water, so that the flushing water can only flow out of the open end 51 and cannot flow back into the connecting base 1, thereby ensuring the sealing property of the flushing water and preventing the pollution of the surgical environment and the damage of the endoscope 4 and the connected equipment.

[0062] At the same time, the negative pressure gas enters the suction water pipe 3 from the negative suction pipe 62 of the connecting piece 6, and the flushing water flowing out of the flushing water pipe 2 and the liquid in the field of view at the front end of the endoscope 4 are sucked away under the action of the negative pressure, thereby ensuring the clarity of the field of view at the front end of the endoscope 4.

[0063] The double-layer sleeve endoscope flushing sheath provided by the utility model realizes the independent work and the synchronous work of the flushing water and the suction water without increasing the structure of the endoscope flushing and suction assembly, ensures that the endoscope can be used in a narrow space, and ensures the sealing property of the flushing water.

[0064] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A double-layered cannula irrigation endoscope irrigation sheath for independent irrigation and suction, comprising a connecting base, an irrigation water pipe and a suction water pipe arranged in the connecting base, the connecting base being connected with an endoscope and allowing an insertion part of a front end of the endoscope to pass through the irrigation water pipe, characterized in that the irrigation water pipe comprises a first cannula and a second cannula, the second cannula passes through the first cannula, the insertion part passes through the second cannula, the first cannula is connected with a water inlet pipe, and a gap between an inner wall of the first cannula and an outer wall of the second cannula forms an irrigation water passage, one end of the irrigation water passage extends out of the connecting base to form an open end, and the other end is arranged in the connecting base to form a closed end, one end of the suction water pipe extends out of the connecting base and is arranged on the irrigation water pipe, and the other end is connected with a negative suction pipe. The connecting base is provided with a coupling part capable of moving axially along the connecting base, and the irrigation water pipe and the suction water pipe pass through the coupling part and form the water inlet pipe and the negative suction pipe extending out of the connecting base in the coupling part.

2. The double layered cannula irrigation endoscope irrigation sheath of claim 1, wherein, An end part region of the coupling part matched with the irrigation water pipe is formed with an expanding pipe opening with gradually increasing caliber.

3. The double layered cannula irrigation endoscope irrigation sheath of claim 2, wherein, The first cannula is configured as a straight pipe with equal outer diameters, and an inner diameter of a first end region is larger than a pipe diameter of the second cannula, and an inner diameter of a second end region is matched with the pipe diameter of the second cannula.

4. The double layered cannula irrigation endoscope irrigation sheath of claim 1, wherein, The first cannula is configured as a tapered pipe with gradually decreasing inner diameters from the first end to the second end, and an inner diameter of the first end is larger than the pipe diameter of the second cannula, and an inner diameter of the second end is matched with the pipe diameter of the second cannula.

5. The double layered cannula irrigation endoscope irrigation sheath of claim 1, wherein, The first cannula and the second cannula are configured as pipes with same cross sections.

6. The double layered cannula irrigation endoscope irrigation sheath of claim 1, wherein, The first cannula and the second cannula are configured as pipes with different cross sections.

7. The double layered cannula irrigation endoscope irrigation sheath of claim 1, wherein, The first cannula and the second cannula are configured as coaxial distribution.

8. The double-layered cannula irrigation endoscope irrigation sheath for independent irrigation and water feeding according to claim 6 or 7, characterized in that, The first cannula and the second cannula are configured as eccentric distribution.

9. The double-layered cannula irrigation endoscope irrigation sheath for independent irrigation and water feeding according to claim 6 or 7, characterized in that, ​

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