Novel water injection structure in disposable endoscope

Abstract

The invention relates to the technical field of medical instruments, in particular to a novel water injection structure in a disposable endoscope, which comprises an instrument channel arranged in an endoscope body, and a water diversion area is arranged at the output end of the instrument channel; wherein the area, connected with the top of the water diversion area, of the inner wall of the endoscope body sinks to form an inclined first water diversion guide area, and a first preset angle is formed between the first water diversion guide area and the central axis of the instrument channel; the lower end face of the water diversion area sinks to the lower end face of the endoscope body to form a hollow water expansion area; and a second water diversion guide area is formed in the connecting area of the endoscope body and the water expansion area. According to the novel water injection structure in the disposable endoscope, water flows shunted by the two shunting structures interact to form a vortex, so that stones can be smoothly brought out of the body after floating, a good stone removing effect is achieved, the stone residue condition is reduced, and the operation time is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a novel water injection structure in a disposable endoscope. Background Art

[0002] In the medical fields such as urology, endoscopic surgery has become a common diagnosis and treatment method. For example, in stone treatment surgeries such as percutaneous nephrolithotomy, an endoscope is needed to observe and assist in removing stones in the body. For the common disposable endoscopes on the market currently, the water injection method is mostly to directly inject water along the straight direction through the instrument channel from the front tip part. This conventional water injection method has certain limitations during the stone removal process. It is often difficult to effectively make the stones float, thereby affecting the stone removal efficiency and the overall surgical effect, resulting in problems such as possible extension of the surgical time and increased risk of stone residue, and cannot well meet the clinical demand for efficient stone removal. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies existing in the prior art, and provide a novel water injection structure in a disposable endoscope, including: An instrument channel provided inside the endoscope body, and a water distribution area is provided at the output end of the instrument channel; Wherein, the area where the inner wall of the endoscope body is connected to the top of the water distribution area sinks to form an inclined first water diversion guiding area, and the first water diversion guiding area forms a first preset angle with the central axis of the instrument channel; the lower end surface of the water distribution area sinks to the lower end surface of the endoscope body to form a hollowed-out water expansion area; the area where the endoscope body is connected to the water expansion area forms a second water diversion guiding area.

[0004] Further, the first preset angle formed by the first water diversion guiding area and the central axis of the instrument channel is 15° to 75°.

[0005] Further, the side of the first water diversion guiding area away from the output end is connected to the inner wall of the endoscope body by an arc surface transition.

[0006] Further, the inner wall of the endoscope body and the second water diversion guiding area are connected by an arc surface transition.

[0007] Further, the lowest point of the second water diversion guiding area is located at the lower end surface of the endoscope body, and the highest point of the second water diversion guiding area is located at the bottom of the first water diversion guiding area.

[0008] Further, the side of the first water diversion guiding area close to the output end is the lowest side of the inclined surface.

[0009] Furthermore, the first water diversion guiding area of the water injection structure exerts a first water diversion guiding effect on the water flow along the lower end surface of the first water diversion guiding area, and the second water diversion guiding area of the water injection structure exerts a second water diversion guiding effect on the water flow along the direction of the second water diversion guiding area towards the outer wall of the endoscope body. The first water diversion guiding and the second water diversion guiding cooperate with each other to form a vortex.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The novel water injection structure in a disposable endoscope of the present invention includes a water diversion structure in two major directions. The first water diversion guiding area inclined downward on the inner wall of the endoscope body exerts a water diversion effect on the water flow along the inclined lower end surface direction; the first water diversion guiding area with a cutting edge structure on the lower end surface of the endoscope body exerts another water diversion effect on the water flow scattered along the direction of the first water diversion guiding area towards the outer wall of the endoscope body. The water flows diverted by the two water diversion structures interact with each other to form a vortex, enabling the stones to float up and be smoothly taken out of the body, thereby achieving a good stone removal effect, reducing the situation of stone residue, and shortening the operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is a schematic diagram of a novel water injection structure in a disposable endoscope of the present invention; Figure 2 is a cross-sectional view of a novel water injection structure in a disposable endoscope of the present invention; Figure 3 is a schematic diagram of the function of a novel water injection structure in a disposable endoscope of the present invention.

[0012] REFERENCE SIGNS 1: Endoscope body; 11: Instrument channel; 12: Water diversion area; 121: First water diversion guiding area; 122: Second water diversion guiding area; 2: Water flow; 3: Stone; 4: Vortex. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described herein are only used to explain the present invention and are not used to limit the present invention.

[0014] In order to simplify the drawings, only the parts related to the present invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0015] First embodiment See also Figure 1-3 The technical solution of a novel water injection structure in a disposable endoscope provided in this embodiment includes the following: An instrument channel 11 is provided inside the endoscope body 1, and a water separation area 12 is provided at the output end of the instrument channel 11; Among them, the area where the inner wall of the endoscope body 1 and the top of the water-dividing area 12 are connected sinks to form an inclined first water-dividing guide area 121, and the first water-dividing guide area 121 forms a first preset angle with the central axis of the instrument channel 11; the lower end surface of the water-dividing area 12 sinks to the lower end surface of the endoscope body 1 to form a hollow water expansion area; the area where the endoscope body 1 and the water expansion area are connected forms a second water-dividing guide area 122.

[0016] In the specific implementation, as shown in the attached Figure 1 , Attachment Figure 2 As shown, the hollow channel running through the interior of the endoscope body 1 from left to right is the instrument channel 11, and the rightmost area of ​​the instrument channel 11 is the water diversion area 12. An inclined slope is provided on the top of the water diversion area 12, and the slope is the first water diversion guide area 121. The side of the first water diversion guide area 121 close to the output end is the lowest side of the slope; the first preset angle formed by the first water diversion guide area 121 and the central axis of the instrument channel 11 is 15° to 75°, and the side of the first water diversion guide area 121 away from the output end is connected to the inner wall of the endoscope body 1 by a circular arc surface transition. The slope can be processed into a bevel by mold forming or subsequent processing technology, such as CNC milling, to ensure that the angle between the bevel and the central axis of the instrument channel 11 is accurate.

[0017] In this structure, the water output from the instrument channel 11 will flow along the lower end surface of the first water diversion guide area 121 at an angle of 15° to 75°. Figure 2 Lower right side scour.

[0018] In the specific implementation, as shown in the attached Figure 1 , Attachment Figure 2 As shown, the bottom of the water-dividing area 12 has a cutting edge that is lower on the left and higher on the right, which can be made by a precise cutting process, such as laser cutting, etc. The cutting edge is the second water-dividing guide area 122, and the inner wall of the endoscope body 1 and the second water-dividing guide area 122 are connected by an arc transition. The lowest point of the second water-dividing guide area 122 is located at the lower end surface of the endoscope body 1, and the highest point of the second water-dividing guide area 122 is located at the bottom of the first water-dividing guide area 121.

[0019] In this structure, water output from the instrument channel 11 will be flushed out along the cut edge of the second water diversion guide area 122 toward the outer wall of the endoscope body 1 .

[0020] In summary, the first water diversion guide area 121 of the water injection structure produces a first water diversion guiding effect on the water flow 2 along the lower end surface of the first water diversion guide area 121, and the second water diversion guide area 122 of the water injection structure produces a second water diversion guiding effect on the water flow 2 along the second water diversion guide area 122 toward the outer wall of the endoscope body 1, and the first water diversion guide cooperates with the second water diversion guide to form a vortex 4.

[0021] The working principle or working process of the novel water injection structure in a disposable endoscope provided by the present invention is as follows: Water injection preparation: Connect the water injection device to the inlet of the instrument channel 11 of the disposable endoscope, and ensure that the connection is tight and the water injection system can normally and stably provide water flow with appropriate pressure and flow rate 2.

[0022] Forming vortex 4: After the water injection device is started, the water flow 2 flows along the instrument channel 11 to the front end of the endoscope body 1 (attached Figure 1 or attached Figure 2 When the water flows out of the second water diversion guide area 122 at the front end, it further disperses in the direction guided by the second water diversion guide area 122, and finally forms a preset vortex 4 around the front end, so that the water flow 2 environment around the stone 3 changes, and an upward force is generated to cause the stone 3 to float.

[0023] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new water injection structure in a disposable endoscope, characterized in that: include: An instrument channel is provided inside the endoscope body, and a water separation area is provided at the output end of the instrument channel; Among them, the area where the inner wall of the endoscope body and the top of the water-dividing area are connected sinks to form an inclined first water-dividing guide area, and the first water-dividing guide area forms a first preset angle with the central axis of the instrument channel; the lower end surface of the water-dividing area sinks to the lower end surface of the endoscope body to form a hollow water expansion area; the area where the endoscope body and the water expansion area are connected forms a second water-dividing guide area.

2. The novel water injection structure in the disposable endoscope according to claim 1 is characterized in that: The first water diversion guide area and the central axis of the instrument channel form a first preset angle of 15° to 75°.

3. The novel water injection structure in the disposable endoscope according to claim 1 is characterized in that: The side of the first water diversion guide area away from the output end is connected to the inner wall of the endoscope body by an arc surface transition.

4. The novel water injection structure in the disposable endoscope according to claim 1 is characterized in that: The inner wall of the endoscope body and the second water-dividing guide area are connected by a cambered transition.

5. The novel water injection structure in the disposable endoscope according to claim 1 is characterized in that: The lowest point of the second water diversion guide area is located at the lower end surface of the endoscope body, and the highest point of the second water diversion guide area is located at the bottom of the first water diversion guide area.

6. The novel water injection structure in the disposable endoscope according to claim 1 is characterized in that: The side of the first water diversion guide area close to the output end is the lowest side of the slope.

7. The novel water injection structure in the disposable endoscope according to claim 1 is characterized in that: The first water diversion guide area of ​​the water injection structure produces a first water diversion guide effect on the water flow along the lower end surface of the first water diversion guide area, and the second water diversion guide area of ​​the water injection structure produces a second water diversion guide effect on the water flow along the second water diversion guide area toward the outer wall of the endoscope body, and the first water diversion guide cooperates with the second water diversion guide to form a vortex.

Images