Gas injection valve and puncture device using the same

Abstract

The present invention discloses an air injection valve and a puncture device using the same, comprising: a valve body, a valve core assembly arranged in the valve body, and a valve cover suitable for connecting to the valve body, the valve body having a hollow accommodating cavity, and the valve body being provided with an air inlet suitable for inflating the accommodating cavity, an exhaust port suitable for discharging the gas in the accommodating cavity, and an air outlet connected to the accommodating cavity and used for connecting the puncture device; the valve core assembly comprising a first sealing member suitable for blocking the exhaust port, a second sealing member suitable for blocking the air inlet, and an elastic member arranged between the first sealing member and the second sealing member; the valve cover is sealed and matched with the valve body, and the valve cover has a hollow through hole connected to the air inlet. The present invention can improve the convenience and safety of the operation of the air injection valve during the use of the puncture device.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an air injection valve and a puncture device using the same. Background Art

[0002] During minimally invasive surgery, it is generally necessary to establish multiple surgical channels on the human body, and this is when a trocar is needed. Generally, one of the trocars needs to be connected to an insufflator to inflate the human body and provide a surgical field of view, while the remaining trocars do not need to be connected to an insufflator and are only used to pass surgical instruments. The trocars all have an injection valve for connecting to an insufflator. The switch of the injection valve must be closed before use. During use, the trocar connected to the insufflator must turn on the switch of the injection valve, and the trocar not connected to the insufflator must keep the injection valve closed. During the above operation, the switch state of the injection valve needs to be switched. Overall, the use process is too complicated, and mistakes are prone to occur during clinical use, resulting in interruptions to the operation. Summary of the invention

[0003] The first object of the present invention is to provide an air injection valve to solve the technical problem of improving the convenience and safety of using the air injection valve.

[0004] The second object of the present invention is to provide a trocar to solve the technical problem of improving the convenience and safety of using an insufflation valve.

[0005] The gas injection valve of the present invention is realized as follows:

[0006] An air injection valve, applicable to a trocar, comprising:

[0007] A valve body, wherein the valve body has a hollow accommodating cavity, and the valve body is provided with an air inlet suitable for inflating the accommodating cavity, an exhaust port suitable for exhausting the gas in the accommodating cavity, and an air outlet communicating with the accommodating cavity and used for connecting a trocar;

[0008] A valve core assembly, the valve core assembly comprising a first sealing member suitable for sealing the exhaust port, a second sealing member suitable for sealing the intake port, and an elastic member disposed between the first sealing member and the second sealing member;

[0009] A valve cover is sealed and matched with the valve body, and the valve cover has a hollow through hole connected to the air inlet.

[0010] In a preferred embodiment of the present invention, the gas injection valve further comprises an adapter adapted to be connected with the valve cover;

[0011] The adapter comprises a columnar connecting portion for mating with the valve cover, and a pushing portion penetrating the columnar connecting portion and adapted to be inserted into the through hole to push against the second sealing member and then compress the elastic member;

[0012] A hollow gas passage suitable for air intake runs through the pushing portion.

[0013] In a preferred embodiment of the present invention, the adapter further comprises an air inlet pipe connected to the columnar connecting portion and adapted to communicate with the gas passage;

[0014] The air inlet pipe is a straight pipe structure or a curved pipe structure.

[0015] In a preferred embodiment of the present invention, a retaining groove of an annular structure is provided on the outer side wall of the valve cover; and

[0016] The inner side wall of the columnar connecting portion is provided with an annular protrusion which is adapted to be engaged with the clamping groove.

[0017] In a preferred embodiment of the present invention, a first sealing ring is embedded in the axial matching position between the columnar connecting portion and the valve cover.

[0018] In a preferred embodiment of the present invention, the second sealing member comprises a second base body suitable for sealing the air inlet, and a second columnar protrusion integrally connected to a side end of the second base body away from the pushing portion;

[0019] The pushing portion is suitable for abutting against the second base; and

[0020] The second columnar protrusion is suitable for being embedded in the elastic member.

[0021] In a preferred embodiment of the present invention, the first sealing member comprises a first base body suitable for sealing the exhaust port, a protrusion connected to the first base body and suitable for penetrating the rear portion of the exhaust port and extending outside the valve body, and a first columnar protrusion integrally connected to a side end of the first base body away from the protrusion;

[0022] The first columnar protrusion is suitable for being embedded in the elastic member.

[0023] In a preferred embodiment of the present invention, a second sealing ring is embedded in the axial matching position between the side end surface of the first base body facing away from the first columnar protrusion and the valve body.

[0024] In a preferred embodiment of the present invention, a plurality of ventilation grooves are recessedly provided on an outer side wall of the valve body surrounding the exhaust port along the circumference of the exhaust port.

[0025] The puncture device of the present invention is achieved in this way:

[0026] A puncture instrument comprises: the above-mentioned air injection valve.

[0027] By adopting the above technical scheme, the present invention has the following beneficial effects: the air injection valve of the present invention and the puncture device using the same, the valve core assembly of the air injection valve includes a first seal suitable for sealing the exhaust port, a second seal suitable for sealing the air inlet, and an elastic member arranged between the first seal and the second seal. Under this structure, the air injection valve remains in a normally closed state under the premise of no external force, so there is no need to consider the problem of switching between opening and closing during use, which improves the convenience of use, avoids the surgical risks caused by mistakes in the switching process, and thus improves the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural schematic diagram of the trocar of the present invention when the gas injection valve is not connected to the adapter;

[0029] Figure 2 This is a schematic structural diagram of the gas injection valve of the trocar of the present invention from a first perspective;

[0030] Figure 3 It is a schematic cross-sectional structural diagram of the gas injection valve of the trocar of the present invention;

[0031] Figure 4 It is a schematic diagram of the explosion structure of the gas injection valve of the trocar of the present invention;

[0032] Figure 5 This is a structural schematic diagram of the trocar of the present invention when the gas injection valve is connected to a conversion joint;

[0033] Figure 6 It is a schematic cross-sectional view of the gas injection valve of the present invention after being connected with an adapter;

[0034] Figure 7 It is a schematic diagram of the adapter of the trocar of the present invention from a first viewing angle;

[0035] Figure 8 A schematic diagram of the gas injection valve of the trocar of the present invention from a second viewing angle;

[0036] Fig. 9 A schematic diagram of the adapter of the trocar of the present invention from a second viewing angle;

[0037] Fig.10 It is a schematic structural diagram of an adapter in another optional embodiment of the trocar of the present invention.

[0038] In the figure: valve body 100, accommodating cavity 101, air inlet 102, air outlet 103, air outlet 105, ventilation groove 107, elastic member 200, columnar connecting part 301, pushing part 302, gas channel 303, air inlet pipe 305, annular protrusion 306, valve cover 400, slot 401, second base 501, second columnar protrusion 503, first base 601, protrusion 602, first columnar protrusion 603, second sealing ring 700, first sealing ring 800, puncture sleeve 900. DETAILED DESCRIPTION

[0039] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0040] Embodiment 1:

[0041] See also Figures 1 to 10 As shown, this embodiment provides an insufflation valve suitable for a puncture device, comprising: a valve body 100 , a valve core assembly disposed in the valve body 100 , and a valve cover 400 suitable for connecting to the valve body 100 .

[0042] Specifically, first, the valve body 100 has a hollow accommodating cavity 101, and the valve body 100 is provided with an air inlet 102 suitable for inflating the accommodating cavity 101, an exhaust port 103 suitable for discharging the gas in the accommodating cavity 101, and an air outlet 105 connected to the accommodating cavity 101 and used to connect the puncture device; that is to say, the air inlet 102, the air outlet 105 and the exhaust port 103 here are all connected to the accommodating cavity 101, and the accommodating cavity 101 forms a channel for gas circulation.

[0043] Secondly, the valve core assembly includes a first seal member suitable for blocking the exhaust port 103, a second seal member suitable for blocking the air inlet 102, and an elastic member 200 disposed between the first seal member and the second seal member; in conjunction with the drawings of this embodiment, the elastic member 200 of this embodiment is taken as an example of a spring. In the natural elastic state of the spring, that is, under the premise of not being acted upon by external force, the spring will generate a thrust force on the first seal member and the second seal member, so that the first seal member can block the exhaust port 103, and the second seal member can block the air inlet 102. When a force is applied to the first seal member to compress the spring, the blocking effect of the first seal member on the exhaust port 103 is eliminated at this time, and the gas in the accommodating cavity 101 can be discharged through the exhaust port 103. Similarly, when a force is applied to the second seal member to compress the spring, the blocking effect of the second seal member on the air inlet 102 is eliminated at this time, and the gas can be introduced into the accommodating cavity 101 through the air inlet 102.

[0044] Furthermore, the valve cover 400 is sealed with the valve body 100, and the valve cover 400 has a hollow through hole 403 connected to the air inlet 102. The sealed connection between the valve cover 400 and the valve body 100 makes it possible to pass gas into the accommodating cavity 101 of the valve body 100 only through the through hole 403.

[0045] Considering the convenience and efficiency of the air intake operation of the valve body 100, the present embodiment adopts the following structure:

[0046] The gas injection valve also includes an adapter suitable for being connected to the valve cover 400 . The adapter is used to connect to the pneumoperitoneum machine, that is, the pneumoperitoneum machine can inflate the valve body 100 through the adapter.

[0047] In conjunction with the drawings of this embodiment, in detail, the adapter includes a columnar connecting portion 301 for matching with the valve cover 400, and a pushing portion 302 that passes through the columnar connecting portion 301 and is suitable for being inserted into the through hole to press against the second sealing member and then compressing the elastic member 200; wherein the pushing portion 302 has a hollow gas passage 303 that is suitable for air intake.

[0048] It should be noted that after the adapter and the valve cover 400 are matched, the push portion 302 at this time just pushes against the second seal, and the second seal at this time presses the elastic member 200 under the pushing action of the push portion 302, so that the elastic member 200 is compressed and deformed. In this process, the blocking effect of the second seal on the air inlet 102 is eliminated simultaneously, so that the gas in the gas channel 303 passing through the push portion 302 can smoothly enter the accommodating cavity 101 of the valve body 100 through the air inlet 102. After the adapter and the valve cover 400 are detached, the pushing force of the push portion 302 on the second seal is eliminated simultaneously, and the second seal will naturally restore the blocking effect on the air inlet 102 under the elastic restoring force of the elastic member 200.

[0049] In addition, the adapter also includes an air inlet pipe 305 connected to the columnar connecting portion 301 and adapted to communicate with the gas passage 303; the air inlet pipe 305 is a straight pipe structure or a curved pipe structure. The air inlet pipe 305 here is used to connect to the insufflator, and the gas in the insufflator passes through the air inlet pipe 305 and then enters the gas passage 303 of the push portion 302, and then enters the accommodating cavity 101 of the valve body 100.

[0050] The matching between the valve cover 400 and the adapter is specifically achieved in the following manner: a clamping groove 401 of an annular structure is provided on the outer side wall of the valve cover 400; and an annular protrusion 306 suitable for clamping and matching with the clamping groove 401 is provided on the inner side wall of the columnar connecting part 301. In other words, the sealing matching between the valve cover 400 and the adapter is achieved by the matching of the clamping groove 401 and the annular protrusion 306. Of course, the valve cover 400 and the adapter here can also be achieved by a threaded matching structure, which is not absolutely limited in this embodiment.

[0051] In order to further improve the sealing effect when the valve cover 400 and the adapter are in a mating state, a first sealing ring 800 is embedded in the axial mating position between the columnar connecting portion 301 and the valve cover 400 of this embodiment.

[0052] Next, the second sealing member and the first sealing member of this embodiment are described. The second sealing member comprises a second base 501 suitable for blocking the air inlet 102, and a second columnar protrusion 503 integrally connected to a side end of the second base 501 away from the push portion 302; the push portion 302 is suitable for abutting against the second base 501; and the second columnar protrusion 503 is suitable for being embedded in the elastic member 200. The first sealing member comprises a first base 601 suitable for blocking the exhaust port 103, a protrusion 602 connected to the first base 601 and extending out of the valve body 100 after passing through the exhaust port 103, and a first columnar protrusion 603 integrally connected to a side end of the first base 601 away from the protrusion 602; the first columnar protrusion 603 is suitable for being embedded in the elastic member 200.

[0053] It should be noted that, since the first sealing member of this embodiment includes a portion of the protruding column 602 extending outside the valve body 100, it is only necessary to push the end of the protruding column 602 extending outside the valve body 100 by hand to achieve the pushing effect of the first sealing member moving toward the elastic member 200. That is to say, when it is necessary to discharge the gas in the accommodating cavity 101 of the valve body 100, it is only necessary to apply a certain pushing force to the end of the protruding column 602 extending outside the valve body 100 by fingers, so that the first sealing member can compress the elastic member 200, and the blocking and sealing effect of the second sealing member on the exhaust port 103 disappears, so that the gas in the valve body 100 can be discharged through the exhaust port 103.

[0054] On the basis of the above structure, in order to further improve the smoothness during exhaust, the present embodiment further provides a plurality of ventilation grooves 107 on the outer wall of the valve body 100 surrounding the exhaust port 103 along the circumference of the exhaust port 103 .

[0055] In an optional implementation manner, in order to further improve the sealing effect between the first seal and the exhaust port 103 in the natural elastic state of the elastic member 200, a second sealing ring 700 is embedded in the axial matching position between the side end surface of the first base 601 of this embodiment that is away from the first columnar protrusion 603 and the valve body 100.

[0056] The specific implementation principle of the gas injection valve in this embodiment is as follows:

[0057] When the valve cover 400 of the gas injection valve is not connected to the adapter, the valve cover 400 is sealed and connected to the valve body 100, and the gas outlet 105 of the valve body 100 is sealed and connected to the puncture sleeve 900 of the puncture device. At this time, the elastic member 200 is in a natural elastic state, the first seal blocks the exhaust port 103, and the second seal blocks the air inlet 102, so that a sealed cavity is formed inside the entire valve body 100. The gas injection valve in this state is in a sealed state. If a push is applied to the end of the protruding column 602 of the first seal extending outside the valve body 100 by hand at this time, the first seal overcomes the action of the elastic member 200 under the action of the hand and moves toward the direction of the second seal. At this time, the sealing effect between the first seal and the exhaust port 103 disappears, so that the gas in the valve body 100 can freely enter and exit from the exhaust port 103 of the valve body 100.

[0058] When the valve cover 400 of the gas injection valve is connected to the adapter (the adapter has been connected to the pneumoperitoneum machine), the adapter is snap-connected with the valve cover 400, and at the same time, the push portion 302 of the adapter pushes the second seal toward the first seal, so that the blocking and sealing effect of the second seal on the gas inlet 102 disappears. At this time, the gas can enter the gas channel 303 of the push portion 302 from the gas inlet pipe 305 of the adapter, and finally enter the accommodating cavity 101 of the valve body 100 through the gas inlet 102 of the valve body 100. The gas injection valve in this state is inflated. If the end of the protrusion 602 of the first seal extending outside the valve body 100 is pushed by hand at this time, the first seal overcomes the action of the elastic member 200 under the action of the hand and moves toward the second seal. At this time, the sealing and blocking effect between the first seal and the exhaust port 103 disappears, so that the gas in the valve body 100 can freely enter and exit from the exhaust port 103 of the valve body 100. Under the premise that the valve body 100 does not need to be inflated, it is only necessary to detach the adapter from the valve cover 400 .

[0059] Embodiment 2:

[0060] Based on the gas injection valve of Example 1, the puncture device of this embodiment includes the gas injection valve of Example 1.

[0061] During the specific use of the puncture device of this embodiment, the puncture needle is inserted into the puncture sleeve 900, and after penetrating the skin to establish a channel, the puncture needle is pulled out. At this time, the gas injection valve of the puncture device is closed, and other surgical instruments can enter the body through the puncture sleeve 900 to perform surgical operations. If deflation is required, the end of the protrusion 602 of the first sealing member extending outside the valve body 100 can be manually pressed to deflate. If the puncture device needs to be connected to the pneumoperitoneum machine, the air inlet pipe 305 of the adapter is first connected to the trachea of ​​the pneumoperitoneum machine, and then the adapter is connected to the valve cover 400. After the connection, the valve body 100 is opened, that is, once the adapter is connected to the valve cover 400, the valve body 100 of the gas injection valve will be directly connected without manual opening. At this time, the pneumoperitoneum machine can inflate the body. If deflation is required, the end of the protrusion 602 of the first sealing member extending outside the valve body 100 can be manually pressed to deflate.

[0062] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0063] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0064] In the present invention, unless otherwise clearly specified and limited, 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0066] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0067] In the present invention, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. An insufflation valve, suitable for a trocar, characterized in that: include: A valve body, wherein the valve body has a hollow accommodating cavity, and the valve body is provided with an air inlet suitable for inflating the accommodating cavity, an exhaust port suitable for exhausting the gas in the accommodating cavity, and an air outlet communicating with the accommodating cavity and used for connecting a trocar; A valve core assembly, the valve core assembly comprising a first sealing member suitable for sealing the exhaust port, a second sealing member suitable for sealing the intake port, and an elastic member disposed between the first sealing member and the second sealing member; A valve cover, the valve cover is sealed and matched with the valve body, and the valve cover has a hollow through hole connected to the air inlet; The gas injection valve also includes an adapter suitable for being connected to the valve cover; The adapter comprises a columnar connecting portion for mating with the valve cover, and a pushing portion penetrating the columnar connecting portion and adapted to be inserted into the through hole to push against the second sealing member and then compress the elastic member; The pushing portion is provided with a hollow gas passage suitable for air intake; The second sealing member comprises a second base body adapted to seal the air inlet, and a second columnar protrusion integrally connected to a side end of the second base body away from the pushing portion; The pushing portion is adapted to abut against the second base; and the second columnar protrusion is adapted to be embedded in the elastic member; The first sealing member includes a first base body suitable for sealing the exhaust port, a protrusion connected to the first base body and suitable for penetrating the rear part of the exhaust port and extending outside the valve body, and a first columnar protrusion integrally connected to a side end of the first base body away from the protrusion; the first columnar protrusion is suitable for being embedded in the elastic member.

2. The gas injection valve according to claim 1, characterized in that: The adapter also includes an air inlet pipe connected to the columnar connecting portion and adapted to communicate with the gas channel; The air inlet pipe is a straight pipe structure or a curved pipe structure.

3. The gas injection valve according to claim 1, characterized in that: A retaining groove of an annular structure is provided on the outer side wall of the valve cover; and The inner side wall of the columnar connecting portion is provided with an annular protrusion which is adapted to be engaged with the clamping groove.

4. The gas injection valve according to any one of claims 1 to 3, characterized in that: A first sealing ring is also embedded in the axial matching position between the columnar connecting portion and the valve cover.

5. The gas injection valve according to claim 1, characterized in that: A second sealing ring is also embedded in the axial matching position between the side end surface of the first base body facing away from the first columnar protrusion and the valve body.

6. The gas injection valve according to claim 1, characterized in that: A plurality of ventilation grooves are concavely arranged on the outer side wall of the valve body surrounding the exhaust port along the circumference of the exhaust port.

7. A trocar, characterized in that: include: A gas injection valve as claimed in any one of claims 1 to 6.

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