Flow adjusting structure of carbon dioxide supply device for endoscope

Abstract

A flow adjusting structure of a carbon dioxide supply device for an endoscope relates to the technical field of endoscope air supply and comprises a pagoda head, the upper end of the pagoda head is connected with a sealing rod, the sealing rod is connected with a locking connector in a sleeved mode, the upper end of the locking connector is detachably provided with a flow limiting connector, and the flow limiting connector is connected with the sealing rod in a sleeved mode. An air outlet in the upper end of the sealing rod penetrates through the upper end of the locking connector and is communicated with the flow limiting connector, the sealing rod comprises a first threaded end and a straight rod part, a step opening is formed in the connecting position of the straight rod part and the first threaded end, an inner ring limiting part is arranged at the position, at a bottom hole, in an inner cavity of the locking connector, and a sealing ring is arranged in the inner cavity of the locking connector. The flow regulation function of the endoscopic carbon dioxide gas supply device is realized at low cost, the flow regulation is realized by the flow limiting joint instead of gas supply pipes with different flow limiting models in the original scheme, the material of the flow limiting joint is greatly reduced compared with that of the gas supply pipe, and the labor cost for producing the gas supply pipe is also saved.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopic gas supply, in particular to a flow rate regulating structure of a carbon dioxide gas supply device for an endoscope. Background Art

[0002] During endoscopic surgery, by injecting carbon dioxide gas into the patient's body, a certain inflation environment can be formed in the surgical area, helping doctors observe the diseased tissues more clearly and complete the surgical operation. The carbon dioxide gas supply device for an endoscope has become one of the essential devices in endoscopic surgery;

[0003] The carbon dioxide gas supply device for an endoscope needs to have a stable gas flow rate to meet different surgical requirements. In general endoscopic surgeries, the gas flow rate requirement is relatively small, but in surgeries that require large-scale inflation (such as large-scale polypectomy), the gas flow rate requirement will increase accordingly. The gas supply device needs to have a certain flow rate regulating function, which can provide a stable gas flow rate in different surgical environments to ensure the smooth progress of the surgery;

[0004] Most of the existing carbon dioxide gas supply devices for endoscopes on the market achieve this flow rate regulating function by replacing the gas supply tubes with different flow-limiting diameters. For example, Olympus's UCR carbon dioxide gas supply device for endoscopes has three gas supply tubes with different flow rates: a gas supply tube, a low-flow gas supply tube, and an ultra-low-flow gas supply tube. Among them, the gas supply tube is a standard accessory, and other types of gas supply tubes are optional accessories. Hospitals need to purchase the optional gas supply tubes additionally to achieve the flow rate regulating function.

[0005] When using the gas supply device, if the gas flow rate requirement of the surgery changes, the installed gas supply tube needs to be removed, and then other types of gas supply tubes need to be installed to complete the flow rate regulation.

[0006] Defects of the prior art: Manufacturers of carbon dioxide gas supply devices for endoscopes need to prepare various specifications of materials to produce different types of gas supply tubes, resulting in relatively high material costs. For hospitals, to use the flow rate regulating function of the gas supply device, they need to spend more on purchasing other types of gas supply tubes and increase the corresponding maintenance consumption. The operation method of replacing and installing different types of gas supply tubes to achieve the flow rate regulating function is also relatively inconvenient. Summary of the Utility Model

[0007] The purpose of the utility model is to provide a flow rate regulating structure of a carbon dioxide gas supply device for an endoscope, which reduces the production and maintenance costs of the components required for the flow rate regulating function of the carbon dioxide gas supply device for an endoscope, simplifies the regulating method of the flow rate regulating function, improves the operation convenience, and solves the problems raised in the above background art.

[0008] The utility model solves its technical problems by adopting the following technical solutions:

[0009] A flow regulation structure of a carbon dioxide gas supply device for an endoscope, comprising a tapered head, a sealing rod is connected to the upper end of the tapered head, a locking connector is sleeved and connected to the sealing rod, a flow limiting connector is detachably installed at the upper end of the locking connector, and the upper end air outlet of the sealing rod passes through the upper end of the locking connector and is communicated with the flow limiting connector.

[0010] Preferably, the sealing rod includes a first threaded end and a straight rod portion, and a stepped opening is formed at the connection between the straight rod portion and the first threaded end.

[0011] Preferably, an inner ring limiting portion is provided at the position of the bottom hole in the inner cavity of the locking connector, and the aperture of the inner ring limiting portion is smaller than that of the straight rod portion.

[0012] Preferably, the first threaded end is threadedly connected to the tapered head, and the stepped opening abuts against the inner ring limiting portion.

[0013] Preferably, the inner diameter of the through hole of the flow limiting connector is smaller than the inner diameter of the through hole of the sealing rod.

[0014] Preferably, a second threaded end is provided at the upper end of the locking connector, and the second threaded end is threadedly connected to the flow limiting connector.

[0015] The advantages and positive effects of the present utility model are:

[0016] 1. The flow regulation function of the carbon dioxide gas supply device for endoscopy is realized at low cost. In this patent, the function of the flow limiting connector replaces the air supply pipes of different flow limiting models in the original scheme to realize flow regulation. The material of this flow limiting connector is much lower than that of the air supply pipe, and the labor cost of producing the air supply pipe is also saved;

[0017] 2. The installation is more convenient. Compared with the operation of removing the air supply pipe and installing a new model air supply pipe in the original scheme, the adapter described in this patent only needs to be installed on the metal component joint of the original air supply pipe to realize flow regulation;

[0018] 3. The maintenance is more convenient. The flow limiting connector described in this patent can be installed on the metal joint of the air supply pipe and cleaned and disinfected together with the air supply pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0020] Figure 1 is an overall structural schematic diagram of a flow regulation structure of a carbon dioxide gas supply device for an endoscope of the present utility model;

[0021] Figure 2Schematic diagram of the removal of the flow-limiting joint structure of the flow regulation structure of a carbon dioxide gas supply device for an endoscope according to the present utility model;

[0022] Figure 3 Schematic diagram of the component locking connector 3 in the flow regulation structure of a carbon dioxide gas supply device for an endoscope according to the present utility model;

[0023] Figure 4 Schematic diagram of the component sealing rod 2 in the flow regulation structure of a carbon dioxide gas supply device for an endoscope according to the present utility model;

[0024] Figure 5 Schematic diagram of the component tower head 1 in the flow regulation structure of a carbon dioxide gas supply device for an endoscope according to the present utility model;

[0025] Figure 6 Schematic diagram of the flow-limiting joint structure of a carbon dioxide gas supply device for an endoscope according to the present utility model;

[0026] Figure 7 Schematic diagram of the outlet joint structure in an embodiment of a carbon dioxide gas supply device for an endoscope according to the present utility model;

[0027] Figure 8 Schematic diagram of the assembly direction of the sealing rod and the locking connector in a carbon dioxide gas supply device for an endoscope according to the present utility model;

[0028] Figure 9 Schematic diagram of the front view sectional structure of a carbon dioxide gas supply device for an endoscope according to the present utility model.

[0029] The reference signs in the drawings are described separately as follows: tower head 1; sealing rod 2; locking connector 3; flow-limiting joint 5; first threaded end 201; straight rod portion 202; stepped opening 203; second threaded end 301; inner ring limiting portion 302. Detailed description of the specific implementation

[0030] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0031] The following is combined with Figures 1-9 to describe the present utility model in detail. Among them, for the convenience of narration, the orientation described below is stipulated as follows: the up-down, left-right, front-back directions described below are consistent with the front-back, left-right, up-down directions of the Figure 1 viewing direction, Figure 1 and the direction shown is consistent with the up-down, left-right, front-back directions of the front view direction of the device of the present utility model.

[0032] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. It may be the communication inside at least two components or the interaction relationship between at least two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The following further details the embodiments of the present utility model with reference to the accompanying drawings:

[0034] Please refer to Figures 1-9 , an embodiment provided by the present utility model: a flow rate adjustment structure of a carbon dioxide gas supply device for an endoscope, including a tower head 1, a sealing rod 2, a locking connector 3 and a flow limiting connector 5. The sealing rod 2 is composed of a first threaded end 201 and a straight rod portion 202. Since the diameter of the first threaded end 201 is smaller than that of the straight rod portion 202, a stepped opening 203 is formed at the connection between the straight rod portion 202 and the first threaded end 201. Thus, during assembly, first insert the first threaded end 201 of the sealing rod 2 into the second threaded end 301 on the locking connector 3, so that the first threaded end 201 passes through the bottom hole in the locking connector 3. At this time, since an inner ring limiting portion 302 is provided at the bottom hole position in the inner cavity of the locking connector 3, and the inner diameter of the inner ring limiting portion 302 is smaller than that of the straight rod portion 202, the stepped opening 203 abuts against the inner ring limiting portion 302, thereby forming a limit. The first threaded end 201 is directly locked and fixed to the tower head 1 by threads. At this time, the upper air outlet of the sealing rod 2 passes through the upper end of the locking connector 3, and the flow limiting connector 5 can be threadedly connected to the locking connector 3 through the second threaded end 301 according to requirements. When a large flow rate of carbon dioxide is needed for gas supply, the flow limiting connector 5 does not need to be installed, and the second threaded end 301 on the locking connector 3 can be directly tightened on the air outlet connector of the carbon dioxide gas supply device. When a small flow rate of carbon dioxide is needed for gas supply, the flow limiting connector 5 can be connected to the second threaded end 301, and then the flow limiting connector 5 is tightened and connected to the air outlet connector of the carbon dioxide gas supply device. The tower end of the tower head 1 is connected to the air outlet pipe. Since the inner diameter of the through hole of the flow limiting connector 5 is smaller than the inner diameter of the through hole of the sealing rod 2, the flow limiting connector 5 can play a role in limiting the flow rate to reduce the gas supply volume of carbon dioxide per minute;

[0035] During specific implementation, the tapered end of the tapered head 1 is connected to the gas outlet pipe, and the flow-limiting joint 5 is installed as required. When the carbon dioxide gas supply device needs to output a large carbon dioxide flow rate, the flow-limiting joint 5 is not installed, and the locking connector 3 is directly connected to the gas outlet connector of the carbon dioxide gas supply device. The sealing rod 2 functions as a flow limiter with a flow-limiting aperture of 1.2 mm, and the gas supply volume of the gas supply device is approximately 8.5 L / min. In the medium flow rate output gear, the flow-limiting joint 5 with a through-hole inner diameter of 0.8 mm is connected to the locking connector 3 and then connected to the gas outlet connector of the carbon dioxide gas supply device. The through-hole inner diameter is smaller than that of the sealing rod 2, and the flow-limiting joint 5 (0.8 mm) functions as a flow limiter. At this time, the gas supply volume of the gas supply device is approximately 5 L / min. In the low flow rate output gear, the flow-limiting joint 5 with a through-hole inner diameter of 0.4 mm is connected to the locking connector 3 and then connected to the gas outlet connector of the carbon dioxide gas supply device. The through-hole inner diameter is smaller than that of the sealing rod 2, and the flow-limiting joint 5 (0.4 mm) functions as a flow limiter. At this time, the gas supply volume of the gas supply device is approximately 2 L / min. Therefore, there is no need to use gas supply pipes of different models, which is very convenient to use as a whole, reduces the production and maintenance costs of the components required for the flow rate adjustment function of the endoscopic carbon dioxide gas supply device, simplifies the adjustment method of the flow rate adjustment function, and improves the operation convenience.

[0036] For the present utility model, 1. The flow rate adjustment function of the endoscopic carbon dioxide gas supply device is realized at low cost. In this patent, the function of the flow-limiting joint replaces the gas supply pipes of different flow-limiting models in the original scheme to realize flow rate adjustment. The material of the flow-limiting joint is greatly reduced compared with the gas supply pipe, and the labor cost of producing the gas supply pipe is also saved.

[0037] 2. The installation is more convenient. Compared with the operation of removing the gas supply pipe and installing a new model gas supply pipe in the original scheme, the adapter described in this patent only needs to be installed on the metal component connector of the original gas supply pipe to realize flow rate adjustment.

[0038] 3. The maintenance is more convenient. The flow-limiting joint described in this patent can be installed on the metal connector of the gas supply pipe and cleaned and disinfected together with the gas supply pipe.

[0039] It should be emphasized that the embodiments described in the present utility model are illustrative rather than restrictive. Therefore, the present utility model is not limited to the embodiments described in the specific implementation manners. Any other implementation manners obtained by those skilled in the art based on the technical solutions of the present utility model also belong to the protection scope of the present utility model.

Claims

1. A flow regulating structure of a carbon dioxide gas supply device for an endoscope, comprising a pagoda head (1), characterized in that: The upper end of the pagoda head (1) is connected to a sealing rod (2), a locking connector (3) is sleeved on the sealing rod (2), a flow limiting joint (5) is detachably mounted on the upper end of the locking connector (3), and an upper air outlet of the sealing rod (2) passes through the upper end of the locking connector (3) and is in communication with the flow limiting joint (5).

2. The flow regulating structure of the carbon dioxide gas supply device for endoscope according to claim 1, characterized in that: The sealing rod (2) comprises a threaded end (201) and a straight rod portion (202), and a stepped opening (203) is formed at the connection between the straight rod portion (202) and the threaded end (201).

3. The flow rate regulating structure of the carbon dioxide gas supply device for endoscope according to claim 2, characterized in that: An inner ring limiting portion (302) is provided in the inner cavity of the locking connector (3) at the bottom hole position, and the hole diameter of the inner ring limiting portion (302) is smaller than that of the straight rod portion (202).

4. The flow rate regulating structure of the carbon dioxide gas supply device for endoscope according to claim 3, characterized in that: The threaded end 1 (201) is threadedly connected to the pagoda head (1), and the stepped opening (203) abuts against the inner ring limiting portion (302).

5. The flow rate regulating structure of the carbon dioxide gas supply device for endoscope according to claim 4, characterized in that: The inner diameter of the through hole of the current limiting joint (5) is smaller than the inner diameter of the through hole of the sealing rod (2).

6. The flow rate regulating structure of the carbon dioxide gas supply device for endoscope according to claim 5, characterized in that: The upper end of the locking connector (3) is provided with a second threaded end (301), and the second threaded end (301) is threadedly connected to the current limiting connector (5).

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