Gas injection auxiliary assembly for endoscope

Abstract

A gas injection auxiliary assembly for an endoscope relates to the technical field of gas injection connectors and comprises a gas inlet cylinder part, a middle connecting part and a gas exhaust cylinder part, a gas inlet cavity is formed in the gas inlet cylinder part, a gas exhaust cavity is formed in the gas exhaust cylinder part, and a first gas flow channel and a second gas flow channel are formed in the middle connecting part. The air inlet cavity is communicated with the exhaust cavity through the first air flow channel and the second air flow channel, an air plug block is connected in the air inlet cavity in a sliding mode, and a hole plug body is installed at an air inlet hole in the bottom of the air inlet cavity in a sliding mode. After the gas supply device is shut down, part of collected gas is used for pressing in and discharging gas remaining in the gas inlet pipe of the endoscope, so that residual injected gas is effectively avoided, the phenomenon that the gas injection amount is too small when the endoscope is used is prevented, meanwhile, the injection speed of the last part of gas is increased, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas injection interfaces, in particular to a gas injection auxiliary component for an endoscope. Background Art

[0002] During endoscopic surgery, especially laparoscopic surgery, doctors usually inject carbon dioxide gas into the patient's abdominal cavity to create a working space, which can separate organs from surrounding tissues, thereby providing doctors with sufficient operating space and a clear field of vision to facilitate the operation of endoscopes and other instruments.

[0003] During gas injection, it is often necessary to pay attention to the amount and pressure of gas to avoid patient discomfort due to overinflation, such as abdominal distension, abdominal pain and even complications. Currently, during the gas injection process, after the gas delivery device delivers a certain amount of gas, some gas will remain in the air inlet tube of the endoscope. This part of gas is difficult to discharge, which can easily affect the surgical work. Utility Model Content

[0004] The purpose of the utility model is to provide a gas injection auxiliary component for an endoscope to solve the problems raised in the above-mentioned background technology.

[0005] The utility model solves the technical problem by adopting the following technical solutions:

[0006] An air injection auxiliary component for an endoscope comprises an air intake cylinder part, an intermediate connecting part and an exhaust cylinder part, the air intake cylinder part is provided with an air intake cavity, the exhaust cylinder part is provided with an exhaust cavity, the intermediate connecting part is provided with an air flow channel one and an air flow channel two, the air intake cavity and the exhaust cavity are interconnected through the air flow channel one and the air flow channel two, an air plug block is slidably connected in the air intake cavity, a return spring is connected between the upper end surface of the air plug block and the top wall of the air intake cavity, a hole plug body is slidably installed at the air intake hole at the bottom of the air intake cavity, a fixing plate is fixedly connected to the upper end surface of the hole plug body, a sealing plate is fixedly connected to the right end surface of the fixing plate, a sealing cavity is provided at the left opening of the air flow channel two, and the sealing plate is slidably installed in the sealing cavity.

[0007] Preferably, an inner concave cavity is provided at the bottom of the hole plug body, and support rods are fixedly connected at equal intervals along the outer circle of the inner concave cavity, a support ring is fixedly connected to the lower end of the support rod, and the support ring is slidably inserted into the air inlet hole at the bottom of the air inlet cavity.

[0008] Preferably, a concave cavity is provided at the bottom of the air inlet cavity at the position of the air inlet hole, and the hole plug body is embedded in the concave cavity.

[0009] Preferably, the bottom end surface of the gas plug block is arranged in a convex hemispherical shape.

[0010] Preferably, a positioning groove is provided on the upper cavity wall of the sealing cavity, and the top end of the sealing plate can be embedded in the positioning groove.

[0011] Preferably, the lower end surface of the air inlet cylinder is connected with a one-way air inlet, which is interconnected with the air inlet hole at the bottom of the air inlet cavity, and the upper end surface of the exhaust cylinder is connected with a one-way air outlet, which is interconnected with the exhaust cavity.

[0012] The advantages and positive effects of the utility model are:

[0013] The utility model collects part of the gas through the air intake chamber, and after the final total amount of gas is output and the air supply device is shut down, the collected part of the gas is used to press and discharge the gas remaining in the endoscope air intake pipe, thereby effectively avoiding the residual gas injection and preventing the occurrence of insufficient gas injection when the endoscope is used, and also speeding up the injection speed of the last part of the gas, greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the overall structure of a gas injection auxiliary component for an endoscope according to the utility model;

[0016] Figure 2 This is a schematic diagram of the main cross-sectional structure of a gas injection auxiliary component for an endoscope of the utility model;

[0017] Figure 3 For this utility model Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0018] The markings in the accompanying drawings are described as follows: air inlet cylinder 10; middle connecting part 11; exhaust cylinder 12; one-way air inlet 13; one-way air outlet 14; air inlet cavity 15; air flow channel 1 16; air plug block 17; exhaust cavity 18; air flow channel 2 19; sealing cavity 20; sealing plate 21; fixing plate 22; concave cavity 23; hole plug body 24; bracket rod 25; bracket ring 26. DETAILED DESCRIPTION

[0019] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0020] Combine the following Figure 1-3 The utility model is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are the same as Figure 1 The view direction is consistent in front, back, left, right, up and down. Figure 1 The direction shown is consistent with the front, back, left, right, up and down directions of the device of the utility model when viewed from the front.

[0021] In the present invention, unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of at least two elements or the interaction relationship between at least two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0023] See also Figure 1-3 The utility model provides an embodiment: an air injection auxiliary component for an endoscope, comprising an air intake cylinder portion 10, an intermediate connecting portion 11 and an exhaust cylinder portion 12, wherein an air flow channel 16 and an air flow channel 2 19 arranged in the intermediate connecting portion 11 connect the air intake cavity 15 in the air intake cylinder portion 10 with the exhaust cavity 18 in the exhaust cylinder portion 12, wherein the air flow channel 2 19 is located at the bottom of the air intake hole near the bottom of the air intake cavity 15, and the air flow channel 1 16 is located on the upper side, and an air plug block 17 is slidably installed in the air intake cavity 15, and the air plug block 17 is tightly fitted with the side wall of the air intake cavity 15 to form a certain seal, and in the air plug block 17 A return spring is connected between the upper end surface and the top wall of the air inlet chamber 15, a hole plug body 24 is slidably installed at the air inlet hole at the bottom of the air inlet chamber 15, and an inner concave cavity is provided at the bottom of the hole plug body 24, and support rods 25 are fixedly connected along the outer circle of the inner concave cavity at equal intervals, and a support ring 26 is fixedly connected to the lower end of the support rod 25, and the support ring 26 is slidably inserted into the air inlet hole at the bottom of the air inlet chamber 15, a fixing plate 22 is fixedly connected to the upper end surface of the hole plug body 24, and a sealing plate 21 is fixedly connected to the right end surface of the fixing plate 22, and a sealing cavity 20 is provided at the left opening of the air flow channel 19, and the sealing plate 21 is slidably installed in the sealing cavity 20;

[0024] Thereby, the gas input pipe is connected to the one-way air inlet 13 at the bottom of the air inlet cylinder 10, and the air inlet pipe of the endoscope is connected to the one-way air outlet 14 at the upper end of the exhaust cylinder 12, so that when the gas is injected, the air supply device discharges a certain amount of gas. First, the gas enters the one-way air inlet 13 into the air inlet hole at the bottom of the air inlet cavity 15, thereby pushing the hole plug body 24 upward, and then the fixing plate 22 slides upward, thereby driving the sealing plate 21 to move upward to close the air flow channel 19, and then the gas enters the inner cavity of the air inlet cavity 15, forcing the air plug block 17 to slide upward, thereby causing the reset spring to contract. When the air plug block 17 moves to the upper side of the air flow channel 16, the gas enters the exhaust cavity 18 from the air flow channel 16. The gas in the one-way air outlet 14 is input into the endoscope air inlet pipe. After the air supply device has output a certain amount of gas, there is no airflow at the bottom of the hole plug body 24. The air plug block 17 immediately moves downward under the force of the return spring, thereby blocking the air flow channel 16 and pressing the hole plug body 24 downward to open the sealing plate 21. Then the gas in the air plug block 17 and the bottom of the air inlet chamber 15 is continuously pressed into the exhaust chamber 18 under the action of the spring force, thereby continuing to push the exhaust chamber 18 and the residual gas in the endoscope air inlet pipe to be discharged, thereby effectively avoiding the residual gas injection and preventing the occurrence of insufficient gas injection when the endoscope is in use. At the same time, it also accelerates the injection speed of the last part of the gas, greatly improving the work efficiency.

[0025] It should be noted that, in order to ensure the stability of the hole plug body 24 , in this embodiment, a concave cavity 23 is provided at the bottom of the air inlet cavity 15 at the position of the air inlet hole, and the hole plug body 24 is embedded in the concave cavity 23 .

[0026] It is worth mentioning that in order to improve the subsequent downward pressure exhaust of the air plug block 17, in this embodiment, the bottom end surface of the air plug block 17 is set to be an inwardly concave semicircular shape or an outwardly convex hemispherical shape.

[0027] In addition, in one embodiment, a positioning groove is provided on the upper cavity wall of the sealing cavity 20, and when the sealing plate 21 slides upward, the top end of the sealing plate 21 is just embedded in the positioning groove.

[0028] To summarize, firstly, part of the gas is collected through the air inlet cavity. After the final total amount of gas is output, the air supply device is shut down, and then the collected part of the gas is used to pressurize and discharge the gas remaining in the endoscope air inlet pipe, thereby effectively avoiding residual gas injection and preventing the occurrence of insufficient gas injection when the endoscope is used. At the same time, it also accelerates the injection speed of the last part of the gas, greatly improving work efficiency.

[0029] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. An air injection auxiliary assembly for an endoscope, comprising an air inlet cylinder (10), an intermediate connecting portion (11) and an air exhaust cylinder (12), characterized in that: The air intake cylinder (10) is provided with an air intake chamber (15), the air exhaust cylinder (12) is provided with an air exhaust chamber (18), the intermediate connecting portion (11) is provided with an air flow channel 1 (16) and an air flow channel 2 (19), the air intake chamber (15) and the air exhaust chamber (18) are connected to each other through the air flow channel 1 (16) and the air flow channel 2 (19), the air intake chamber (15) is slidably connected with an air plug block (17), and the air plug block (17) is provided with an air flow channel 1 (16) and an air flow channel 2 (19). 7) A return spring is connected between the upper end surface and the top wall of the air inlet chamber (15); a hole plug body (24) is slidably installed at the air inlet hole at the bottom of the air inlet chamber (15); a fixing plate (22) is fixedly connected to the upper end surface of the hole plug body (24); a sealing plate (21) is fixedly connected to the right end surface of the fixing plate (22); a sealing chamber (20) is provided at the left opening of the air flow channel 2 (19); and the sealing plate (21) is slidably installed in the sealing chamber (20).

2. The gas injection auxiliary component for endoscope according to claim 1, characterized in that: The bottom of the hole plug body (24) is provided with an inner concave cavity, and support rods (25) are fixedly connected at equal intervals along the outer circle of the inner concave cavity, and the lower end of the support rod (25) is fixedly connected with a support ring (26), and the support ring (26) is slidably inserted into the air inlet hole at the bottom of the air inlet cavity (15).

3. The gas injection auxiliary component for endoscope according to claim 2, characterized in that: The bottom of the air inlet cavity (15) is provided with a concave cavity (23) at the position of the air inlet hole, and the hole plug body (24) is embedded in the concave cavity (23).

4. The gas injection auxiliary component for endoscope according to claim 1, characterized in that: The bottom end surface of the air plug block (17) is arranged in an outwardly convex hemispherical shape.

5. The gas injection auxiliary component for endoscope according to claim 1, characterized in that: A positioning groove is provided on the upper cavity wall of the sealing cavity (20), and the top end of the sealing plate (21) can be embedded in the positioning groove.

6. The gas injection auxiliary component for endoscope according to claim 1, characterized in that: The lower end surface of the air inlet cylinder (10) is connected to a one-way air inlet (13), and the one-way air inlet (13) is interconnected with the air inlet hole at the bottom of the air inlet cavity (15); the upper end surface of the exhaust cylinder (12) is connected to a one-way air outlet (14), and the one-way air outlet (14) is interconnected with the exhaust cavity (18).

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