Inflation valve and puncture outfit

Abstract

The utility model discloses an inflation valve and a puncture outfit, and relates to the technical field of medical instruments, the inflation valve is used for the puncture outfit, the inflation valve comprises a valve seat provided with a hollow valve cavity, and the valve seat is further provided with an air inlet, an air outlet and a mounting port which are communicated with the valve cavity; the movable part is movably arranged in the valve cavity, the movable part is provided with a sealing part and a through-flow part communicated with the air outlet, the movable part is further provided with a closing position and an opening position, in the closing position, the sealing part is right opposite to the air inlet to block the air inlet, and in the opening position, the through-flow part is right opposite to the air inlet; the elastic piece is arranged in the valve cavity and abuts against the side, away from the pressing piece, of the movable piece so that the movable piece can have the tendency to be close to the pressing piece. The pressing piece penetrates through the mounting opening in a sliding manner; and the pressing piece drives the movable piece to circularly move between the closing position and the opening position through the transmission structure. According to the technical scheme, opening and closing of the inflation valve are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an inflation valve and a puncture device. Background Technology

[0002] In existing technologies, disposable laparoscopic trocars are widely used in minimally invasive surgeries to establish access to the patient's abdominal cavity and inject gas into the cavity via an inflation seat to create a working space. Currently, commercially available disposable laparoscopic trocars are typically equipped with a rotary inflation valve. This design requires the operator to use one hand to stabilize the catheter while the other hand rotates the valve to control the gas flow. This method not only increases the complexity of the surgical procedure but may also affect surgical efficiency and operator convenience. Utility Model Content

[0003] The main purpose of this invention is to provide an inflation valve and a puncture device, which aims to facilitate the inflation operation of existing puncture devices.

[0004] To achieve the above objectives, this utility model proposes an inflation valve for a puncture device, comprising:

[0005] The valve seat has a hollow valve cavity, and the valve seat is also provided with an air inlet, an air outlet and an installation port that communicate with the valve cavity;

[0006] A movable component is movably disposed within the valve cavity. The movable component has a sealing part and a flow passage part communicating with the air outlet. The movable component also has a closed position and an open position. In the closed position, the sealing part faces the air inlet to block the air inlet. In the open position, the flow passage part faces the air inlet.

[0007] An elastic element is disposed within the valve cavity and presses against the side of the movable element away from the pressing element, so that the movable element tends to move closer to the pressing element;

[0008] The pressing component is slidably inserted into the mounting port;

[0009] The transmission structure allows the pressing member to drive the movable member to cyclically move between a closed position and an open position.

[0010] In one embodiment, the movable member slides along its own axial direction and rotates about its own axis, and the transmission structure includes:

[0011] A first ratchet and a guide groove are provided in the valve cavity, and the first ratchet and the guide groove are alternately arranged around the periphery of the mounting port;

[0012] A second ratchet is provided at one end of the pressing member that extends into the valve cavity, and multiple second ratchet teeth are arranged along the circumference of the pressing member; and

[0013] A third ratchet is provided at the end of the movable member facing the pressing member, and multiple third ratchets are provided along the circumference of the movable member.

[0014] In one embodiment, the outer peripheral wall of the movable member is provided with a sealing element that mates with the valve cavity, wherein the sealing element is provided at opposite ends of the sealing portion along the sliding direction and at opposite ends of the flow passage portion along the sliding direction.

[0015] In one embodiment, the flow passage includes:

[0016] The clearance groove is recessed in the outer peripheral wall of the movable part and extends circumferentially.

[0017] A flow passage is provided at the bottom of the clearance groove, and one end extends to the side of the movable part facing the air outlet.

[0018] In one embodiment, the inner wall of the valve cavity is recessed with a guide groove, the guide groove extends axially along the mounting port, and the outer wall of the pressing member is provided with a guide block, the guide block being slidably embedded in the guide groove.

[0019] In one embodiment, a plurality of guide blocks are provided, and the plurality of guide blocks are spaced apart circumferentially along the pressing member, and each guide block is slidably connected to a guide groove.

[0020] In one embodiment, the movable member is provided with a limiting groove with an opening on the side facing the air outlet, and a first limiting part extending axially is provided at the bottom of the limiting groove. The elastic member is configured as a helical spring, and one end of the helical spring extends into the limiting groove and is sleeved on the outside of the first limiting part.

[0021] In one embodiment, the flow passage extends radially along the movable member and communicates with the limiting groove.

[0022] This utility model also proposes a puncture device, comprising:

[0023] The catheter has an inlet on one side;

[0024] The inflation valve is the inflation valve described above, wherein the valve seat is provided at the inlet.

[0025] In one embodiment, the inlet is coaxially arranged with the movable member, and a second limiting portion is provided around the periphery of the inlet on the guide tube, and the elastic member is limited and engaged with the second limiting portion.

[0026] In this utility model, the valve seat is provided with a valve cavity and an air inlet, an air outlet, and a mounting port communicating with the valve cavity. Additionally, a movable component is movably arranged within the valve seat, which can move between a closed position and an open position. In the closed position, the sealing part of the movable component faces the air inlet to block it. In the open position, the flow passage part faces the air inlet to connect the air outlet and the air inlet. Furthermore, a pressing component is provided at the mounting port, and an elastic component is provided so that the movable component tends to approach the pressing component. The pressing component drives the movable component to circulate between the closed and open positions through a transmission structure, thereby enabling or disabling airflow. Thus, the inflation valve can be opened and closed by pressing the pressing component, which can be operated with one hand, facilitating the inflation of the trocar and improving surgical efficiency. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the structure of the inflation valve and the conduit provided by this utility model;

[0029] Figure 2 A cross-sectional schematic diagram of the air valve and conduit provided by this utility model;

[0030] Figure 3 Another structural schematic diagram of the inflation valve provided by this utility model;

[0031] Figure 4 A schematic diagram of the pressing component in the inflation valve provided by this utility model;

[0032] Figure 5 A schematic diagram of the valve seat in the inflation valve provided by this utility model;

[0033] Figure 6 A schematic diagram of the moving part in the inflation valve provided by this utility model.

[0034] Explanation of icon numbers:

[0035] 10. Inflation valve; 100. Valve seat; 110. Valve cavity; 120. Air inlet; 130. Air outlet; 140. Mounting port; 200. Moving part; 210. Sealing part; 220. Flow passage part; 221. Clearance groove; 222. Flow passage hole; 230. Limiting groove; 240. Limiting part; 300. Elastic part; 400. Pressing part; 410. Guide block; 500. Transmission structure; 510. First ratchet; 520. Guide groove; 530. Second ratchet; 540. Third ratchet; 600. Sealing part; 20. Conduit.

[0036] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0038] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0039] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0040] To facilitate inflation during puncture, this technical solution proposes an inflation valve 10 for the puncture instrument. The inflation valve 10 includes:

[0041] The valve seat 100 has a hollow valve cavity 110, and the valve seat 100 is also provided with an air inlet 120, an air outlet 130 and a mounting port 140 communicating with the valve cavity 110.

[0042] The movable part 200 is movably disposed in the valve cavity 110. The movable part 200 has a sealing part 210 and a flow passage part 220 communicating with the air outlet 130. The movable part 200 also has a closed position and an open position. In the closed position, the sealing part 210 is directly opposite to the air inlet 120 to block the air inlet 120. In the open position, the flow passage part 220 is directly opposite to the air inlet 120.

[0043] The elastic element 300 is disposed in the valve cavity 110 and presses against the side of the movable element 200 away from the pressing element 400, so that the movable element 200 tends to move closer to the pressing element 400.

[0044] The pressing component 400 is slidably inserted into the mounting port 140;

[0045] The transmission structure 500 drives the movable part 200 to cyclically move between the closed position and the open position via the pressing part 400.

[0046] In this utility model's technical solution, the valve seat 100 is provided with a valve cavity 110 and an air inlet 120, an air outlet 130, and a mounting port 140 communicating with the valve cavity 110. Additionally, a movable member 200 is movably disposed within the valve seat. The movable member 200 can move between a closed position and an open position. In the closed position, the sealing portion 210 of the movable member 200 faces the air inlet 120 to block the air inlet 120. In the open position, the flow passage portion 220 faces the air inlet 120 to allow the air outlet 130 to... The air inlet 120 is connected; in addition, a pressing element 400 is provided at the mounting port 140, and an elastic element 300 is provided so that the movable element 200 tends to move closer to the pressing element 400. The pressing element 400 drives the movable element 200 to circulate between the closed position and the open position through the transmission structure 500, thereby enabling or cutting off the air supply. In this way, the inflation valve 10 can be opened and closed by pressing the pressing element 400. It can be operated with one hand, which facilitates the inflation of the trocar and helps to improve surgical efficiency.

[0047] like Figures 1 to 6In one embodiment of this utility model, the inflation valve 10 includes a valve seat 100, which is a component with a hollow interior, forming a valve cavity 110 at its center. The valve seat 100 has three openings: an air inlet 120, an air outlet 130, and a mounting port 140. These openings are all connected to the valve cavity 110. The air inlet 120 is used to connect to an external air supply source, the air outlet 130 is connected to the air inlet end on the puncture device, and the mounting port 140 is a channel for assembling the pressing component 400. The mounting port 140 and the air outlet 130 are coaxially arranged, and the air inlet 120 is located on the side of the valve seat 100. A movable component 200 is movably arranged in the valve cavity 110. The movable component 200 can slide and cooperate with the valve cavity 110 and can move axially within the valve cavity 110. It comprises two parts: a sealing part 210 and a flow passage 220. The flow passage 220 has a channel that communicates with the area of ​​the valve chamber 110 corresponding to the air outlet 130. The sealing part 210 and the flow passage 220 are arranged side by side along the axial direction of the movable member 200. When the movable member 200 is in the closed position, its sealing part 210 covers the air inlet 120, preventing gas from flowing in. When in the open position, the flow passage 220 is aligned with the air inlet 120, allowing gas to flow from the air inlet 120 to the air outlet 130. An elastic element 300 is also provided inside the valve chamber 110. The elastic element 300 is located on the side of the movable member 200 facing the air outlet 130. One end of the elastic element 300 abuts against the periphery of the air outlet 130, and the other end abuts against the movable element 200. The function of the elastic element 300 is to provide pressure to the movable element 200 in the direction of the pressing element 400. The pressing element 400 is slidably inserted into the mounting port 140 and can slide along the sliding direction of the movable element 200. In addition, the pressing element 400 pushes the movable element 200 to reciprocate between the closed and open positions through the transmission structure 500. The transmission structure 500 can be composed of a series of mechanical components, which convert the action of the pressing element 400 into linear movement of the movable element 200 along the valve cavity 110, thereby realizing the opening and closing of the valve. When it is necessary to start inflating the abdominal cavity, the doctor only needs to press the pressing element 400. This action is transmitted to the movable element 200 through the transmission structure 500, overcoming the resistance provided by the elastic element 300, and moving the movable element 200 from the closed position to the open position. At this time, the flow passage 220 of the movable part 200 is aligned with the air inlet 120, allowing gas to pass through. Once the pressure is released, due to the action of the elastic element 300, the movable part 200 automatically returns to the initial closed state, re-sealing the air inlet 120 and stopping the gas flow. This facilitates the operation of the inflation valve 10 and helps improve surgical efficiency.

[0048] like Figures 3 to 6 In one embodiment of this utility model, the movable member 200 slides along its own axial direction and rotates about its own axis, and the transmission structure 500 includes:

[0049] The first ratchet 510 and the guide groove 520 are provided in the valve cavity 110, and the first ratchet 510 and the guide groove 520 are alternately arranged around the periphery of the mounting port 140.

[0050] The second ratchet 530 is located at one end of the pressing member 400 that extends into the valve cavity 110, and multiple second ratchet 530s are arranged along the circumference of the pressing member 400; and

[0051] The third ratchet 540 is located at one end of the movable member 200 facing the pressing member 400, and multiple third ratchet 540s are arranged along the circumference of the movable member 200.

[0052] In this embodiment, the transmission structure 500 adopts a ratchet mechanism design similar to that of an automatic ballpoint pen. The first ratchet 510 and guide groove 520 are located inside the valve cavity 110 and are alternately arranged around the periphery of the mounting port 140. The design of the first ratchet 510 and guide groove 520 provides a mating surface for the second ratchet 530 to achieve stable transmission action. The second ratchet 530 is located on the outer surface of the end of the pressing member 400 that extends into the valve cavity 110, and multiple ratchet teeth are evenly distributed along the circumference of the pressing member 400. The third ratchet 540 is located at the end of the movable member 200 facing the pressing member 400, and multiple ratchet teeth are also arranged along the circumference of the movable member 200. The operation process of the transmission structure 500 will be described below: Under the action of no external force, The movable part 200 is held in the closed position by the elastic element 300. At this time, the sealing part 210 blocks the air inlet 120 to prevent gas from flowing in. When the pressing part 400 is pressed, the second ratchet 530 on the pressing part 400 begins to contact the third ratchet 540 on the movable part 200 and generates relative movement. As the pressing part 400 continues to move downward, the second ratchet 530 and the third ratchet 540 engage, forcing the movable part 200 to move axially while rotating around the axis. This combined motion of rotation and translation causes... When the movable part 200 moves from the closed position to the open position, the flow passage 220 aligns with the air inlet 120, allowing gas to enter the air inlet of the puncture device through the air outlet 130. At this time, the third ratchet 540 on the movable part 200 rotates to a position directly opposite the first ratchet 510. After releasing the pressing part 400, the third ratchet 540 engages with the first ratchet 510, locking the movable part 200 in the open position to ensure continuous gas flow. When it is necessary to close the inflation valve 10, the pressing part 400 is pressed again. The second ratchet 530 of the 400 pushes the third ratchet 540 on the movable member 200 to continue rotating until the third ratchet 540 is aligned with the guide groove 520. Once the third ratchet 540 is aligned with the guide groove 520, the pressing force is released, and the movable member 200 will move towards the guide groove 520 under the drive of the elastic member 300. The third ratchet 540 slides into the guide groove 520, and the movable member 200 quickly returns to the closed position under the action of the elastic member 300. The sealing part 210 re-seals the air inlet 120, stopping the gas flow. By adopting such a ratchet transmission structure 500, the inflation valve 10 of this utility model can be operated with one hand, which not only simplifies the inflation steps in laparoscopic surgery and improves surgical efficiency and safety, but also ensures the stability of the valve in the open and closed states and avoids accidental gas leakage.

[0053] like Figure 6In one embodiment of this utility model, the outer peripheral wall of the movable member 200 is provided with a sealing member 600 that mates with the valve cavity 110. The sealing part 210 and the flow passage part 220 are respectively provided with sealing members 600 at opposite ends along the sliding direction. The sealing member 600 can be a sealing ring, which mates with the inner wall of the valve cavity 110. The design of these sealing members 600 ensures that gas will not leak out from the gap between the movable member 200 and the valve cavity 110, regardless of whether the position is closed or open, thus guaranteeing the reliability of the seal.

[0054] like Figure 2 and Figure 6 In one embodiment of this utility model, the flow passage 220 includes: a relief groove 221, recessed in the outer peripheral wall of the movable member 200 and extending circumferentially; and a flow passage 222, disposed at the bottom of the relief groove 221, with one end extending to the side of the movable member 200 facing the air outlet 130. The relief groove 221 is an annular groove recessed in the outer peripheral wall of the movable member 200, extending circumferentially. The flow passage 222 is disposed at the bottom of the relief groove 221, with one end extending to the side of the movable member 200 facing the air outlet 130. When in the open position, gas can enter the relief groove 221 and flow through the flow passage 222 to the air outlet 130. The specific size and shape of the flow passage 222 can be designed according to actual needs to ensure sufficient gas flow and minimal pressure loss.

[0055] like Figure 4 In one embodiment of this utility model, a guide groove is recessed in the inner wall of the valve cavity 110, extending axially along the mounting opening 140. A guide block 410 protrudes from the outer wall of the pressing member 400, and the guide block 410 is slidably embedded in the guide groove. The guide groove is an elongated groove recessed in the inner wall of the valve cavity 110, extending axially along the mounting opening 140. The guide block 410 is a protrusion on the outer wall of the pressing member 400, typically elongated or in another shape suitable for embedding in the guide groove. The guide block 410 is embedded and slides along the guide groove, thereby maintaining the linear movement trajectory of the pressing member 400 and ensuring the smooth opening and closing of the inflation valve 10. Furthermore, multiple guide blocks 410 can be spaced apart along the axial direction of the pressing member 400, each guide block 410 slidably connected to a guide groove. This further limits the sliding trajectory of the pressing member 400, further ensuring the smoothness of pressing when the pressing member 400 is pressed.

[0056] like Figure 2 and Figure 6In one embodiment of this utility model, the movable member 200 is provided with a limiting groove 230 with an opening on the side facing the air outlet 130. The bottom of the limiting groove 230 is provided with a first limiting part 240 extending axially. The elastic member 300 is configured as a helical spring. One end of the helical spring extends into the limiting groove 230 and is sleeved on the outside of the first limiting part 240. The limiting groove 230 and the first limiting part 240 cooperate to limit the helical spring, which can effectively control the movement trajectory of the spring and ensure that it always applies elastic force in the expected direction, thereby improving the stability and reliability of operation.

[0057] like Figure 2 and Figure 6 In one embodiment of this utility model, the flow passage 222 extends radially along the movable member 200 and communicates with the limiting groove 230; thus, the limiting groove 230 can not only be used as a limiting structure for the elastic member 300, but also as a channel between the flow passage 222 and the air inlet 120 in the open position, which helps to simplify the structure of the movable member 200 and reduce the difficulty of design and manufacturing.

[0058] This utility model also proposes a puncture device, which includes a catheter 20 with an inlet. An inflation valve 10 is provided at the inlet. The specific structure of the inflation valve 10 is as described in the above embodiments. Since this puncture device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0059] In another embodiment of this utility model, the inlet and the movable part 200 are coaxially arranged. A second limiting part 240 is provided around the periphery of the inlet on the guide tube 20. The elastic part 300 is limited and engaged with the second limiting part 240. The second limiting part 240 has a ring structure. The elastic part 300 is sleeved on the second limiting part 240. The second limiting part 240 can limit the radial sway of the elastic part 300, ensuring that the elastic part 300 can stably apply an axial force to the movable part 200 when the movable part 200 is moving, thereby improving the opening and closing stability of the inflation valve 10.

[0060] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An inflation valve for a puncture instrument, characterized in that, include: The valve seat has a hollow valve cavity, and the valve seat is also provided with an air inlet, an air outlet and an installation port that communicate with the valve cavity; A movable component is movably disposed within the valve cavity. The movable component has a sealing part and a flow passage part communicating with the air outlet. The movable component also has a closed position and an open position. In the closed position, the sealing part faces the air inlet to block the air inlet. In the open position, the flow passage part faces the air inlet. The pressing component is slidably inserted into the mounting port; An elastic element is disposed within the valve cavity and presses against the side of the movable element away from the pressing element, so that the movable element tends to move closer to the pressing element; The transmission structure allows the pressing member to drive the movable member to cyclically move between a closed position and an open position.

2. The inflation valve as described in claim 1, characterized in that, The movable component slides along its own axial direction and rotates about its own axis. The transmission structure includes: A first ratchet and a guide groove are provided in the valve cavity, and the first ratchet and the guide groove are alternately arranged around the periphery of the mounting port; A second ratchet is provided at one end of the pressing member that extends into the valve cavity, and multiple second ratchet teeth are arranged along the circumference of the pressing member; and A third ratchet is provided at the end of the movable member facing the pressing member, and multiple third ratchets are provided along the circumference of the movable member.

3. The inflation valve as described in claim 2, characterized in that, The outer peripheral wall of the movable part is provided with a sealing element that mates with the valve cavity, wherein the sealing element is provided at opposite ends of the sealing part along the sliding direction and at opposite ends of the flow passage part along the sliding direction.

4. The inflation valve as described in claim 3, characterized in that, The flow passage includes: The clearance groove is recessed in the outer peripheral wall of the movable part and extends circumferentially. A flow passage is provided at the bottom of the clearance groove, and one end extends to the side of the movable part facing the air outlet.

5. The inflation valve as described in claim 1, characterized in that, The inner wall of the valve cavity is recessed with a guide groove, which extends axially along the mounting port. The outer wall of the pressing member is provided with a guide block, which is slidably embedded in the guide groove.

6. The inflation valve as described in claim 5, characterized in that, Multiple guide blocks are provided, and the multiple guide blocks are spaced apart along the circumference of the pressing member. Each guide block is slidably connected to a guide groove.

7. The inflation valve as described in claim 4, characterized in that, The movable component is provided with a limiting groove with an opening on the side facing the air outlet. The bottom of the limiting groove is provided with a first limiting part extending axially. The elastic component is configured as a helical spring, with one end of the helical spring extending into the limiting groove and sleeved on the outside of the first limiting part.

8. The inflation valve as described in claim 7, characterized in that, The flow hole extends radially along the movable part and communicates with the limiting groove.

9. A puncture device, characterized in that, include: The catheter has an inlet on one side; An inflation valve is an inflation valve as described in any one of claims 1 to 8, wherein the valve seat is disposed at the inlet.

10. The puncture device as described in claim 9, characterized in that, The inlet is coaxially arranged with the movable part, and a second limiting part is provided around the periphery of the inlet on the guide tube, and the elastic member is limited and engaged with the second limiting part.

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