Knob control type laparoscope aspirator

Abstract

The utility model discloses a knob control type laparoscope aspirator, relates to the technical field of laparoscope aspirators, and is mainly used for solving the problems that the existing laparoscope aspirator is easy to lose force and is inflexible to control when being operated by non-conventional hands. According to the main structure, a cylindrical installation cavity extending in the same direction with the three-way type control valve is formed in the three-way type control valve, a flow channel switching column capable of rotating in the axial direction is coaxially arranged in the installation cavity, and a water suction flow channel and a flushing flow channel which can rotate along with the flow channel switching column to be communicated are formed in the flow channel switching column; a control handle connected with the flow channel switching column is arranged outside the three-way control valve, and a movable clamping assembly for preventing the strip-shaped notch from swinging freely is arranged in the strip-shaped notch. The utility model provides the knob control type laparoscope aspirator, the control and the use of the laparoscope aspirator are more in line with human engineering, and the laparoscope aspirator does not need to continuously apply force, so that the laparoscope aspirator can be well used even if the laparoscope aspirator is not commonly used by hands.

Description

Technical Field

[0001] This utility model relates to the field of laparoscopic aspirator technology, and in particular to a knob-controlled laparoscopic aspirator. Background Technology

[0002] Laparoscopic aspirators, also known as laparoscopic irrigation and aspiration devices, are widely used in laparoscopic surgery. Their most basic functions are irrigation and aspiration. Laparoscopic aspirators can not only irrigate the surgical field but also aspirate blood and smoke, better maintaining a clean and clear surgical field, which is beneficial for precise and minimally invasive procedures during surgery. In addition, laparoscopic aspirators can also be used to expose the surgical field.

[0003] Currently, laparoscopic aspirators on the market are relatively simple – a common laparoscopic aspirator includes a suction and irrigation tube, a three-way control valve, a suction tube, and an irrigation tube. The three-way control valve has three ports that connect to the suction and irrigation tube, the suction tube, and the irrigation tube, respectively. During use, the operator pushes and pulls the valve control lever along the flow path with their thumb, pressing against the lever to control the flow path switching within the three-way control valve, thereby switching between suction and irrigation functions.

[0004] Because laparoscopic suction devices often require switching hands during use, users inevitably face situations where they need to control the valve lever with their non-dominant hand. However, due to the weakness and poor dexterity of the fingers in the non-dominant hand, the thumb of the non-dominant hand is prone to loss of strength and inflexible control when pushing and pulling the valve lever along the flow channel axis and pressing against it. Utility Model Content

[0005] The purpose of this invention is to provide a knob-controlled laparoscopic aspirator that is more ergonomic in its control and does not require continuous force, so that even non-dominant hands can use the laparoscopic aspirator effectively.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is: a knob-controlled laparoscopic aspirator, including a columnar three-way control valve, the two ends of the three-way control valve are respectively connected to a suction and irrigation tube and a suction tube, and the middle side wall of the three-way control valve is connected to the irrigation tube. The three-way control valve has a cylindrical mounting cavity extending in the same direction as it, and the inner walls at both ends of the mounting cavity are respectively provided with an inlet and outlet water channel communicating with the suction and irrigation tube and a suction water channel communicating with the suction tube. The middle inner side wall of the mounting cavity is also provided with a flushing water channel communicating with the irrigation tube.

[0007] The installation cavity is coaxially provided with a flow channel switching column that can rotate axially and whose outer wall is rotatably sealed with the inner wall of the installation cavity. The flow channel switching column is provided with a water suction channel that can connect the inlet and outlet water channel and the water suction channel as it rotates. The flow channel switching column is also provided with a flushing channel that can connect the inlet and outlet water channel and the flushing channel as it rotates.

[0008] The three-way control valve is provided with a control handle that penetrates the side wall of the three-way control valve and is connected to the flow channel switching column. The side wall of the three-way control valve is provided with a strip-shaped slot for the control handle to swing, and a movable clamp assembly is provided in the strip-shaped slot to prevent it from swinging freely.

[0009] As a further improvement of this utility model, the strip-shaped slot extends circumferentially along the flow channel switching column and is disposed on the side wall of the three-way control valve, and the strip-shaped slot is provided with a handle neck at both ends connected to the flow channel switching column and the control handle respectively.

[0010] As a further improvement of this utility model, the movable locking assembly includes a plurality of locking teeth arranged sequentially on one side of the inner wall along the extension direction of the strip groove, and a ball bolt is installed on the handle neck, and the ball end of the ball bolt is movably engaged with the locking teeth.

[0011] As a further improvement of this utility model, the three-way control valve is provided with a suction flushing pipe connector and a suction pipe connector at both ends, and a flushing pipe connector is provided on the outer wall of the middle part of the three-way control valve.

[0012] As a further improvement of this utility model, the suction flushing pipe connector is connected to the suction flushing pipe by an internal thread provided on its inner wall.

[0013] As a further improvement of this utility model, the suction tube connector is connected to the suction tube threadedly by an external thread provided on its outer wall.

[0014] As a further improvement of this utility model, the suction tube is fixedly fitted with an anti-slip outer sleeve. Beneficial effects

[0015] Compared with the prior art, the advantages of the knob-controlled laparoscopic suction device of this utility model are as follows:

[0016] This laparoscopic aspirator uses a control handle to drive the flow channel switching column, thereby switching between the inlet / outlet water channel and the suction or flushing channel. Unlike existing valve control rods that push or pull along the flow channel axis, the control handle on this laparoscopic aspirator moves circumferentially along the flow channel switching column. This circumferential pushing and pulling of the control handle makes the thumb's force application and control more ergonomic, avoiding inflexible control issues. Furthermore, the presence of a movable locking assembly allows the operator to switch between the outlet / suction / flushing channels without needing to hold the control handle in place, preventing loss of force. Therefore, even non-dominant hands can effectively use this laparoscopic aspirator.

[0017] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. Attached Figure Description

[0018] 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 these drawings without creative effort.

[0019] Figure 1 This is an exploded view of the present invention;

[0020] Figure 2 This is an exploded view of the three-way control valve of this utility model.

[0021] Figure 3 This is a perspective view of the flow channel switching column of this utility model;

[0022] Figure 4 This is a cross-sectional view of the present invention in the absorption state;

[0023] Figure 5 This is a cross-sectional view of the present invention in the rinsing state.

[0024] Wherein: 1-Three-way control valve; 11-Suction flushing pipe connector; 12-Suction pipe connector; 13-Flushing pipe connector; 14-Installation cavity; 15-Strip opening; 151-Clamping tooth; 2-Flow channel switching column; 21-Water suction channel; 22-Water flushing channel; 23-Control handle; 24-Handle neck; 25-Ball bolt; 3-Suction flushing pipe; 4-Suction pipe; 41-Anti-slip outer sleeve. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; of course, they can also refer to a mechanical connection or an electrical connection; furthermore, they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Embodiments of the present invention will now be described with reference to the accompanying drawings. Example

[0028] The specific embodiments of this utility model are as follows: Figure 1-5 As shown, a knob-controlled laparoscopic aspirator includes a cylindrical three-way control valve 1. Both ends of the three-way control valve 1 are connected to one end of a suction-irrigation tube 3 and one end of a suction tube 4, respectively, and the middle sidewall of the three-way control valve 1 is connected to one end of the irrigation tube. The three-way control valve 1 has a cylindrical mounting cavity 14 extending in the same direction as the cavity. It should be noted that while the three-way control valve 1 and the mounting cavity 14 extend in the same direction, they are not coaxial. Simultaneously, the inner walls at both ends of the mounting cavity 14 are respectively provided with inlet / outlet water channels communicating with the suction-irrigation tube 3 and a suction channel communicating with the suction tube 4. Furthermore, the middle inner sidewall of the mounting cavity 14 also has a flushing channel communicating with the irrigation tube. By controlling the connection between the inlet / outlet water channels and the suction channel through the three-way control valve 1, the aspirator can perform its suction function; by controlling the connection between the inlet / outlet water channels and the flushing channel through the three-way control valve 1, the aspirator can perform its irrigation function.

[0029] In this laparoscopic suction device, in order to achieve the switching between the inlet / outlet water channel and the suction or flushing water channel, such as... Figure 2-5As shown, a flow channel switching column 2 is coaxially arranged within the mounting cavity 14, capable of axial rotation and having its outer wall in a rotatable sealing fit with the inner wall of the mounting cavity 14. Furthermore, the flow channel switching column 2 is provided with a suction flow channel 21 that connects the inlet / outlet water cavity and the suction cavity as it rotates; the flow channel switching column 2 is also provided with a flushing flow channel 22 that connects the inlet / outlet water cavity and the flushing cavity as it rotates. In this embodiment, the suction flow channel 21 is a straight, linear flow channel eccentrically positioned relative to the axis of the flow channel switching column 2, and the flushing flow channel 22 is an L-shaped flow channel eccentrically positioned relative to the axis of the flow channel switching column 2. This complements the inlet / outlet water cavity and the suction cavity, which are also eccentrically positioned on the inner walls at both ends of the mounting cavity 14, and the flushing cavity, which is positioned on the inner side wall of the middle portion of the mounting cavity 14. Under the premise of the same eccentricity, the staff can connect the inlet and outlet water channels with the suction or flushing channels by rotating the flow channel switching column 2, thereby realizing the switching between the suction mode and flushing mode of the laparoscopic aspirator.

[0030] To achieve rotational control of the flow channel switching column 2, the laparoscopic suction device has a control handle 23 that penetrates the side wall of the three-way control valve 1 and connects to the flow channel switching column 2. Correspondingly, the side wall of the three-way control valve 1 has a strip-shaped slot 15 for the control handle 23 to swing, and a locking assembly is provided within the slot 15 to prevent free swinging. In use, the operator can use their thumb to rotate the control handle 23 circumferentially along the flow channel switching column 2, thereby driving the flow channel switching column 2 to rotate and thus switching the connection between the inlet / outlet water channel and the suction or flushing channel.

[0031] Therefore, compared to existing laparoscopic aspirators that push and pull the valve control lever along the axial direction of the flow channel, the control handle 23 on this laparoscopic aspirator is circumferentially aligned with the flow channel switching column 2, meaning the control handle 23 is pushed and pulled circumferentially along the flow channel. Consequently, the thumb's force application and control are more ergonomic when using this laparoscopic aspirator, avoiding the problem of inflexible control. Simultaneously, due to the presence of the movable locking assembly, the operator does not need to hold the control handle 23 against it or maintain continuous force after switching between the outlet and suction or flushing channels via the control handle 23, thus avoiding the problem of loss of force. Therefore, even with a non-dominant hand, the operator can use this laparoscopic aspirator effectively.

[0032] In this laparoscopic suction device, such as Figure 2As shown, the strip-shaped slot 15 extends circumferentially along the flow channel switching column 2 and is disposed on the side wall of the three-way control valve 1. The strip-shaped slot 15 contains a neck 24, with its two ends connected to the flow channel switching column 2 and the control handle 23, respectively. Regarding the specific structure of the latch assembly: the latch assembly includes multiple locking teeth 16 sequentially disposed on one side of its inner wall along the extension direction of the strip-shaped slot 15. Correspondingly, a ball bolt 25 is installed on the neck 24, and the ball end of the ball bolt 25 is movably engaged with the locking teeth 16. The ball bolt 25 is an existing product, and its working principle is well known to those skilled in the art, therefore it will not be described in detail here. In this embodiment, to facilitate the operator in distinguishing the specific state of the three-way control valve 1, an indicator mark is also provided on the outer wall of the three-way control valve 1 on one side of the strip-shaped slot 15.

[0033] Meanwhile, to accommodate the suction flushing pipes 3 and 4, as well as the flushing pipe, the three-way control valve 1 is equipped with suction flushing pipe connectors 11 and 12 at both ends, and a flushing pipe connector 13 is located on the outer wall of the middle section of the three-way control valve 1. Specifically: the suction flushing pipe connector 11 is threadedly connected to the suction flushing pipe 3 via an internal thread on its inner wall. The suction pipe connector 12 is threadedly connected to the suction pipe 4 via an external thread on its outer wall. The flushing pipe connector 13 is interference-fitted with the inner wall of the flushing pipe via multiple trapezoidal annular surfaces on its outer wall.

[0034] In this embodiment, in order to ensure the sealing between the suction flushing tube connector 11 and the suction flushing tube 3, and between the suction tube connector 12 and the suction tube 4, sealing gaskets are provided between the suction flushing tube connector 11 and the suction flushing tube 3, and between the suction tube connector 12 and the suction tube 4.

[0035] In addition, to prevent slippage during use of the laparoscopic aspirator, an anti-slip sleeve 41 is fixedly fitted onto the outside of the aspiration tube 4. In this embodiment, the aspiration irrigation tube 3 has multiple small holes arranged around its axis on the side wall of the end away from the three-way control valve 1. Furthermore, the shape of the end away from the three-way control valve 1 can be set to be straight or curved as needed.

[0036] The present invention has been described above in conjunction with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations made in accordance with the essence of the present invention.

Claims

1. A knob-controlled laparoscopic aspirator, comprising a columnar three-way control valve (1), wherein both ends of the three-way control valve (1) are connected to a suction and irrigation tube (3) and a suction tube (4) respectively, and the middle sidewall of the three-way control valve (1) is connected to the irrigation tube, characterized in that, The three-way control valve (1) has a cylindrical mounting cavity (14) extending in the same direction as it. The inner walls at both ends of the mounting cavity (14) are respectively provided with an inlet / outlet water channel communicating with the suction flushing pipe (3) and a suction water channel communicating with the suction pipe (4). The inner wall of the middle part of the mounting cavity (14) is also provided with a flushing water channel communicating with the flushing pipe. The installation cavity (14) is coaxially provided with a flow channel switching column (2) that can rotate axially and whose outer wall is rotatably sealed with the inner wall of the installation cavity (14). The flow channel switching column (2) is provided with a water suction channel (21) that can connect the water inlet and outlet channel and the water suction channel as it rotates. The flow channel switching column (2) is also provided with a flushing channel (22) that can connect the water inlet and outlet channel and the flushing channel as it rotates. The three-way control valve (1) is provided with a control handle (23) that penetrates the side wall of the three-way control valve (1) and is connected to the flow channel switching column (2). The side wall of the three-way control valve (1) is provided with a strip-shaped slot (15) for the control handle (23) to swing, and a live card assembly is provided in the strip-shaped slot (15) to prevent it from swinging freely.

2. The knob-controlled laparoscopic aspirator according to claim 1, characterized in that, The strip groove (15) extends circumferentially along the flow channel switching column (2) and is disposed on the side wall of the three-way control valve (1). The strip groove (15) is provided with a handle neck (24) with both ends connected to the flow channel switching column (2) and the control handle (23) respectively.

3. The knob-controlled laparoscopic aspirator according to claim 2, characterized in that, The live-lock assembly includes multiple locking teeth (16) arranged sequentially on one side of the inner wall of the strip groove (15) along its extension direction. A ball bolt (25) is installed on the shank (24), and the ball end of the ball bolt (25) is engaged with the locking teeth (16).

4. The knob-controlled laparoscopic aspirator according to claim 1, characterized in that, The three-way control valve (1) is provided with a suction flushing pipe connector (11) and a suction pipe connector (12) at both ends, and a flushing pipe connector (13) is provided on the outer wall of the middle part of the three-way control valve (1).

5. The knob-controlled laparoscopic aspirator according to claim 4, characterized in that, The suction flushing tube connector (11) is threadedly connected to the suction flushing tube (3) by an internal thread provided on its inner wall.

6. The knob-controlled laparoscopic aspirator according to claim 4 or 5, characterized in that, The suction tube connector (12) is threadedly connected to the suction tube (4) by an external thread provided on its outer wall.

7. The knob-controlled laparoscopic aspirator according to claim 1, characterized in that, The suction tube (4) is fixedly fitted with an anti-slip outer sleeve (41).

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