Endoscope suction valve and endoscope kit

Abstract

The utility model provides an endoscope suction valve and an endoscope suite, and relates to the technical field of medical instruments, the endoscope suction valve provided by the utility model comprises a key cap, a valve core, a guide piece and a valve seat, the valve seat is provided with a liquid inlet and a liquid outlet, and the guiding piece is installed on the valve seat. The key cap is connected to one end of the valve element, and the other end of the valve element penetrates through the guide piece and is movably inserted into the valve seat. In a closed state, the liquid inlet and the liquid outlet are separated by the valve core; and the liquid inlet and the liquid outlet are in fluid communication in the open state. The endoscope suction valve is easy to assemble and position, capable of limiting rotation of the valve element, ensuring alignment of channels and beneficial to stable flow control, the structure of the suction valve is more compact, the axial size is only about 21mm, and the endoscope suction valve is extremely beneficial to being installed at the narrow position of an endoscope.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially is involved in a kind of endoscope suction valve and endoscope suite. BACKGROUND

[0002] Endoscope enters human body inside through natural orifice of human body or small incision made by operation, can directly look and observe the change of relevant part. Suction valve is installed on endoscope, suction valve is used in cooperation with endoscope assembly, when the tissue fluid of patient pathological change position needs to be extracted through endoscope, tissue fluid is extracted by pressing suction valve, then detailed condition of patient is further obtained by testing and analyzing tissue fluid.

[0003] In prior art, suction valve usually includes inner valve body and outer valve body, air vent is formed in inner valve body and outer valve body, for interaction with air outside. In order to make suction valve and air outside exchange smoothly, air vent on inner valve body and air vent on outer valve body are required to be aligned, when inner valve body and outer valve body are separately arranged, air vent of inner valve body and air vent of outer valve body are prone to misalignment, and unsmooth condition occurs when extracting tissue fluid, and it is not easy to position, and overall size is relatively large, axial dimension of suction valve is about 45mm, difficult to install in narrow position of endoscope. SUMMARY

[0004] The utility model aims at providing a kind of endoscope suction valve and endoscope suite to alleviate the technical problem of suction valve difficult to assemble and position in prior art, and structural size is large.

[0005] In the first aspect, the utility model provides endoscope suction valve, including: button cap, valve core, guide piece and valve seat;

[0006] The valve seat has liquid inlet and liquid outlet, and the guide piece is installed in the valve seat.

[0007] The button cap is connected to one end of the valve core, and the other end of the valve core passes through the guide piece and is movably inserted into the valve seat.

[0008] In the closed state, the valve core separates the liquid inlet from the liquid outlet.

[0009] In the open state, the liquid inlet and the liquid outlet are in fluid communication.

[0010] In combination with the first aspect, the utility model provides the first possible implementation of the first aspect, wherein the valve seat has a first chamber, a second chamber, and a passage between the first chamber and the second chamber.

[0011] The liquid inlet is communicated with the first chamber, and the liquid outlet is communicated with the second chamber;

[0012] The valve core has a plug matched with the channel part;

[0013] In the open state, the plug is separated from the channel part, so that the first chamber and the second chamber are communicated through the channel part;

[0014] In the closed state, the plug blocks the channel part.

[0015] In combination with the first aspect, the utility model provides a second possible implementation of the first aspect, wherein the valve core has a cylindrical part connected with the plug, and the cylindrical part is provided with a radial slot;

[0016] In the open state, the cylindrical part passes through the channel part, and the first chamber and the second chamber are communicated through the slot.

[0017] In combination with the first possible implementation of the first aspect, the utility model provides a third possible implementation of the first aspect, wherein the endoscope suction valve further comprises a sealing piece, and the sealing piece is compressed between the guide piece and the valve seat;

[0018] The sealing piece is located between the first chamber and the second chamber, and the sealing piece is matched with the plug.

[0019] In combination with the third possible implementation of the first aspect, the utility model provides a fourth possible implementation of the first aspect, wherein the plug is located in the first chamber, and in the closed state, the plug is attached to and blocks the sealing piece.

[0020] In combination with the third possible implementation of the first aspect, the utility model provides a fifth possible implementation of the first aspect, wherein the valve core is provided with a circumferential limiting part, and the circumferential limiting part is axially slidably matched with the guide piece, so as to prevent the valve core from rotating relative to the guide piece.

[0021] In combination with the first aspect, the utility model provides a sixth possible implementation of the first aspect, wherein the key cap is connected with the valve seat, and the key cap has elasticity for driving the valve core to switch from the open state to the closed state.

[0022] In combination with the first aspect, the utility model provides a seventh possible implementation of the first aspect, wherein the openings of the liquid inlet and the liquid outlet are both at an angle with the axial direction of the valve core.

[0023] In combination with the first aspect, the utility model provides the eighth possible implementation of first aspect has provided, wherein the axial size of endoscope suction valve is less than 30mm.

[0024] Secondly, the utility model provides an endoscope kit equipped with the endoscope suction valve of the first aspect.

[0025] The utility model discloses the following beneficial effects: adopt the valve seat to have the liquid inlet and the liquid outlet, the guide piece is installed in the valve seat, the button cap is connected in one end of the valve core, the other end of the valve core passes through the guide piece and is movably inserted in the valve seat, the valve core separates the liquid inlet and the liquid outlet in the closed state, and the liquid inlet and the liquid outlet are in fluid communication in the open state, not only easy to assemble and position, and the suction valve structure is more compact, and it is extremely beneficial to install in the narrow position of endoscope.

[0026] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the related art, the following will briefly introduce the drawings needed to be used in the specific embodiment or related art description, obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0028] Figure 1 The utility model provides the endoscope suction valve's explosion map for the embodiment of the utility model;

[0029] Figure 2 The utility model provides the endoscope suction valve's section view for the embodiment of the utility model.

[0030] Icon: 100-button cap;200-valve core;201-plug;202-cylinder part;203-groove;204-circumferential limiting portion;300-guide piece;400-valve seat;401-liquid inlet;402-liquid outlet;403-first chamber;404-second chamber;500-sealing element. DETAILED DESCRIPTION

[0031] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creating creative labor belong to the protection scope of the utility model.

[0032] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, construct and operate in a particular orientation, therefore, it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. The physical quantity in the formula, such as no separate marking, should be understood as the basic quantity of the international system of units, or the derived quantity derived from the basic quantity by multiplication, division, differentiation or integration and other mathematical operations.

[0033] In the description of the utility model, it needs to explain, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0034] As shown in Figure 1 And Figure 2 The utility model embodiment provides an endoscope suction valve, which comprises: a key cap 100, a valve core 200, a guide piece 300 and a valve seat 400;The valve seat 400 has a liquid inlet 401 and a liquid outlet 402, and the guide piece 300 is installed on the valve seat 400;The key cap 100 is connected to one end of the valve core 200, and the other end of the valve core 200 passes through the guide piece 300 and is movably inserted into the valve seat 400;In the closed state, the valve core 200 separates the liquid inlet 401 from the liquid outlet 402;In the open state, the liquid inlet 401 and the liquid outlet 402 are in fluid communication.

[0035] The endoscope suction valve can be configured as a normally closed state, and the valve core 200 can be driven by pressing the key cap 100, so that the liquid inlet 401 and the liquid outlet 402 are in fluid communication. The endoscope suction valve structure recorded in the embodiment is more compact, which is beneficial to installation in the position with small size of endoscope.

[0036] In the embodiment of the utility model, the valve seat 400 has a first chamber 403, a second chamber 404, and a passage part between the first chamber 403 and the second chamber 404; the liquid inlet 401 communicates with the first chamber 403, and the liquid outlet 402 communicates with the second chamber 404; the valve core 200 has a plug 201 matched with the passage part; in the open state, the plug 201 is separated from the passage part, so that the first chamber 403 and the second chamber 404 communicate through the passage part; in the closed state, the plug 201 blocks the passage part.

[0037] In the optional embodiment, the passage part can be configured as an inner convex ring arranged on the valve seat 400, the inner convex ring is reduced in diameter and can be blocked by the plug 201; in the open state, the plug 201 is separated from the inner convex ring, so that the first chamber 403 and the second chamber 404 communicate.

[0038] In the embodiment, the endoscope suction valve further comprises a sealing member 500, which is pressed between the guide member 300 and the valve seat 400; the sealing member 500 is located between the first chamber 403 and the second chamber 404, and the sealing member 500 is matched with the plug 201. In the closed state, the plug 201 is attached to the sealing member 500, so that the first chamber 403 and the second chamber 404 are separated; in the open state, the plug 201 is separated from the sealing member 500, and at this time, the first chamber 403 and the second chamber 404 are in fluid communication.

[0039] As shown in Figure 1 , the valve core 200 has a cylindrical part 202 connected with the plug 201, and the cylindrical part 202 is provided with a radial slot 203; in the open state, the cylindrical part 202 passes through the passage part, and the first chamber 403 and the second chamber 404 communicate through the slot 203, which fully utilizes the structural space and expands the fluid passage size.

[0040] As shown in Figure 1 and Figure 2 , the plug 201 is located in the first chamber 403, and in the closed state, the plug 201 is attached to and blocks the sealing member 500.

[0041] In the closed state, the liquid pressure at the liquid inlet 401 is greater than that at the liquid outlet 402, and then the liquid pressure in the first chamber 403 is greater than that in the second chamber 404, and the pressure difference can further drive the plug 201 to block the sealing member 500.

[0042] As shown in Figure 1 , the valve core 200 is provided with a circumferential limiting part 204, which is slidably fitted in the guide member 300 in the axial direction, so as to prevent the valve core 200 from rotating relative to the guide member 300.

[0043] The circumferential limiting part 204 can be configured to be adapted to the protrusion or sliding groove of the guide 300, and the protrusion or sliding groove extends axially along the valve core 200, which can ensure smooth axial sliding of the valve core 200, and can avoid circumferential rotation of the valve core 200, thereby ensuring stable orientation of the notch 203 and alignment of the passage, which is beneficial to stable flow control.

[0044] As shown in Figure 1 and Figure 2 The key cap 100 is connected to the valve seat 400, and the key cap 100 has elasticity to drive the valve core 200 to switch from the open state to the closed state. The key cap 100 can be configured of elastic materials such as rubber or silicone. Pressing the key cap 100 can tend to switch the valve core 200 to the open state, and releasing the key cap 100 under the action of the elastic force can drive the valve core 200 to reset.

[0045] In an optional embodiment, the openings of the liquid inlet 401 and the liquid outlet 402 are both oriented at an angle to the axial direction of the valve core 200, so as to avoid excessive increase in the axial size of the suction valve as a whole due to the liquid inlet 401 and the liquid outlet 402.

[0046] In an optional embodiment, the axial size of the endoscope suction valve is less than 30 mm. Compared with a 45 mm suction valve composed of an inner valve body and an outer valve body, the axial size of the endoscope suction valve of the present embodiment is only about 21 mm under the same channel size standard, which is extremely beneficial to installation of the endoscope in a small size position.

[0047] The endoscope kit provided by the embodiment of the present application is equipped with the endoscope suction valve as described in the above embodiments.

[0048] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An endoscope suction valve, characterized by, The endoscope suction valve comprises: a key cap (100), a valve core (200), a guide (300) and a valve seat (400); the valve seat (400) has a liquid inlet (401) and a liquid outlet (402), and the guide (300) is installed on the valve seat (400); the key cap (100) is connected to one end of the valve core (200), and the other end of the valve core (200) passes through the guide (300) and is movably inserted into the valve seat (400); in the closed state, the valve core (200) separates the liquid inlet (401) from the liquid outlet (402); in the open state, the liquid inlet (401) and the liquid outlet (402) are in fluid communication.

2. The endoscope suction valve of claim 1, wherein, the valve seat (400) has a first chamber (403), a second chamber (404), and a passage part between the first chamber (403) and the second chamber (404); the liquid inlet (401) communicates with the first chamber (403), and the liquid outlet (402) communicates with the second chamber (404); the valve core (200) has a plug (201) adapted to the passage part; in the open state, the plug (201) is separated from the passage part, so that the first chamber (403) and the second chamber (404) are communicated through the passage part; in the closed state, the plug (201) blocks the passage part.

3. The endoscope suction valve of claim 2, wherein, the valve core (200) has a column part (202) connected to the plug (201), and the column part (202) is provided with a radial slot (203); in the open state, the column part (202) passes through the passage part, and the first chamber (403) and the second chamber (404) are communicated through the slot (203).

4. The endoscope suction valve of claim 2 or 3, wherein, The endoscope suction valve further comprises a sealing member (500) compressed between the guide (300) and the valve seat (400); the sealing member (500) is located between the first chamber (403) and the second chamber (404), and the sealing member (500) is adapted to the plug (201).

5. The endoscope suction valve of claim 4, wherein, the plug (201) is located in the first chamber (403), and in the closed state, the plug (201) fits and blocks the sealing member (500).

6. The endoscope suction valve of claim 4, wherein, the valve core (200) is provided with a circumferential limiting part (204) which is axially slidably fitted in the guide (300) to prevent the valve core (200) from rotating relative to the guide (300).

7. The endoscope suction valve of claim 1, wherein, the key cap (100) is connected to the valve seat (400), and the key cap (100) has elasticity to drive the valve core (200) to switch from the open state to the closed state.

8. The endoscope suction valve of claim 1, wherein, the openings of the liquid inlet (401) and the liquid outlet (402) are both at an angle with the axial direction of the valve core (200).

9. The endoscope suction valve of claim 1, wherein, The axial dimension of the endoscope suction valve is less than 30 mm.

10. An endoscope kit characterized by comprising: The endoscope kit is equipped with the endoscope suction valve according to any one of claims 1-9.

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