Needle cylinder capable of generating constant negative pressure

Abstract

The utility model belongs to the field of negative pressure needle cylinders, particularly relates to a needle cylinder capable of generating constant negative pressure, and provides the following scheme aiming at the problems that an existing needle cylinder is inconvenient to operate and easy to loosen in the negative pressure liposuction process, the negative pressure state is unstable, and the operation safety and accuracy are reduced: the needle cylinder comprises a cylinder body, a piston is arranged in the cylinder body in a sliding and sealing manner, a pintle is fixedly arranged at one end of the piston, a plurality of limiting holes which are uniformly distributed are formed in the two sides of the pintle, and scales are arranged outside the cylinder body; the limiting assembly is arranged on the barrel and used for limiting the positions of the pintle and the piston on the pintle. Through the arrangement of the limiting assembly and the limiting hole, accurate control and rapid locking of the pintle position in the negative pressure liposuction process are achieved, stability and durability of the negative pressure state are guaranteed, operation is simplified, and safety and accuracy of an operation are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to negative pressure needle cylinder technical field especially relates to a needle cylinder that can produce constant negative pressure. BACKGROUND

[0002] Negative pressure needle cylinder, as a kind of tool widely used in medical treatment, beauty and experiment etc. Field, its main purpose is to form negative pressure environment in needle cylinder to realize its specific function tool, its working principle is based on the negative pressure principle in physics, that is, when the gas in needle cylinder is extracted or compressed, its internal pressure will be lower than external atmospheric pressure, thereby forming negative pressure.

[0003] At present, the existing negative pressure needle cylinder needs to be manually held to fix position after adjusting negative pressure by pulling needle plug with hand, which leads to the operation inconvenience and easy loosening in the process of negative pressure liposuction, causes the instability of negative pressure state, reduces the safety and accuracy of operation. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the operation inconvenience and easy loosening in the process of negative pressure liposuction in prior art, causes the instability of negative pressure state, reduces the safety and accuracy of operation, and provides a needle cylinder that can produce constant negative pressure.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A needle cylinder that can produce constant negative pressure, comprising:

[0007] The cylinder body is internally slidably sealed with a piston, and the piston has a needle plug fixed at one end, and a plurality of limiting holes are evenly arranged on both sides of the needle plug.

[0008] The limiting assembly is arranged on the cylinder body and is used to limit the position of the needle plug and the piston thereon.

[0009] In one possible design, the limiting assembly includes two connecting seats fixed on both sides of the opening of the cylinder body, two movable racks are rotatably arranged outside the two connecting seats, a plurality of pin columns are fixed at the bottom of both sides of the two movable racks and close to the needle plug, the pin columns are matched with the limiting holes and can be disengaged from the limiting holes, a tension spring is fixed inside each of the two movable racks, the other end of the tension spring is fixedly connected with one side of the cylinder body, and a stop column is fixed inside each of the two movable racks.

[0010] In one possible design, the side away from each other of the two movable racks is fixedly provided with an anti-skid pad.

[0011] In one possible design, one side of the cylinder body is fixedly provided with a threaded connection port facilitating the connection of a drainage tube.

[0012] In a possible design, the outer part of the barrel is provided with a scale.

[0013] In a possible design, the opening of the barrel is fixedly provided with a boosting handle on both sides, and one side of the needle plug is fixedly provided with a pressing handle.

[0014] In this application, when starting to use, first, the drainage tube is firmly connected to the needle barrel through the threaded connection port on one side of the barrel, so as to transmit negative pressure and drain liquid in subsequent operations, then ensure that the two movable racks in the limiting assembly are in the initial insertion state with the limiting holes on both sides of the needle plug through the pin column, and the tension spring is in the initial state, providing a reset force for the subsequent movable rack;

[0015] When performing negative pressure liposuction, first, according to the actual needs, press the non-slip pads on the two movable racks to make the movable racks rotate on the connecting seat to the side away from each other, when the movable racks rotate to the side away from each other, the pin column on the movable racks will be separated from the limiting hole, then hold the pressing handle with one hand and press the boosting handle with the other fingers to pull it outward, so as to drive the needle plug and the piston to slide in the barrel, thereby extracting the air in the barrel, so that the drainage tube forms a negative pressure, during the extraction process, the degree of negative pressure generation can be observed by observing the scale on the outside of the barrel, when the required negative pressure value is reached, the pressed movable rack is released, due to the reset force formed by the elasticity of the tension spring, the pin column on the movable rack will automatically insert into the corresponding limiting hole on the needle plug, when the pin column 9 is inserted into the limiting hole 3, the abutting column 12 abuts against the boosting handle 4, locking the position of the needle plug and keeping the negative pressure state constant.

[0016] At this time, the needle barrel is in a constant negative pressure state, and medical operations such as suction and drainage can be started, during the use process, the drainage situation can be observed through the drainage tube, and the position of the needle plug can be adjusted to fine-tune the negative pressure value as needed, when the fat in the barrel reaches a certain amount, first, the drainage tube or the liposuction needle is removed, then the movable rack is pressed to separate the pin column from the limiting hole, then the fat in the barrel is pushed out by pressing the pressing handle, and then the barrel and all its parts are thoroughly cleaned and disinfected for next use.

[0017] The utility model has the following beneficial effects:

[0018] In the utility model, through the setting of the limiting assembly and the limiting hole, the pin column is released by pressing the movable rack, the needle plug is easily pulled to generate negative pressure, and the scale is observed to ensure the required negative pressure value, then the movable rack is released, the tension spring automatically resets to insert the pin column into the limiting hole to lock the position of the needle plug, thereby stably keeping the negative pressure state, improving the accuracy and safety of the operation, simplifying the operation process, and improving the medical work efficiency;

[0019] The utility model discloses through the setting of limiting assembly and limiting hole, realized the accurate control and quick locking of needle bolt position in the process of negative pressure liposuction, ensure the stability and durability of negative pressure state, simplified the operation and promoted the security and accuracy of operation. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The utility model discloses a whole main view structure schematic diagram of needle cylinder that can produce constant negative pressure is provided;

[0021] Figure 2 The utility model discloses a whole side view structure schematic diagram of needle cylinder that can produce constant negative pressure is provided;

[0022] Figure 3 The utility model discloses a needle bolt pullout structure schematic diagram of needle cylinder that can produce constant negative pressure is provided;

[0023] Figure 4 The utility model discloses a A part amplification structure schematic diagram of needle cylinder that can produce constant negative pressure is provided.

[0024] In the drawing: 1, cylinder body;2, needle bolt;201, press handle;3, limiting hole;4, boost handle;5, scale;6, screw connection mouth;7, connecting seat;8, movable frame;9, pin column;10, tension spring;11, antiskid pad;12, abutment column. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0026] Embodiment one

[0027] Reference Figures 1-4 A needle cylinder comprising:

[0028] Cylinder body 1, piston, needle bolt 2, limiting assembly and other auxiliary components, the cylinder body 1 is cylindrical structure, adopts transparent or translucent material to make, to facilitate observing internal liquid change and negative pressure generation situation, the inside sliding seal of cylinder body 1 is provided with a piston, the piston is closely matched with the inner wall of cylinder body 1, ensures not to leak gas in the moving process, and the one end of piston is fixedly provided with needle bolt 2, and needle bolt 2 is convenient for subsequent movement of piston.

[0029] Multiple limiting holes 3 are uniformly distributed on both sides of needle bolt 2 along its axial direction, and the size and position of limiting hole 3 are designed to be matched with pin column 9 in limiting assembly described later, to realize accurate positioning and locking.

[0030] The limiting assembly includes two connecting seats 7, two movable racks 8, pin columns 9 and tension springs 10. The connecting seats 7 are fixedly arranged at both sides of the opening of the barrel 1 and used for supporting and fixing the movable racks 8. The movable racks 8 are rotatably installed on the connecting seats 7 through a rotating shaft or other means, so that they can rotate around an axis. The bottom of each movable rack 8 is fixedly provided with at least three pin columns 9 near the needle bolt 2. The diameters of the three pin columns 9 are matched with the limiting holes 3 on the needle bolt 2, so that the pin columns 9 can be inserted into and locked with the needle bolt 2. The inner side of each movable rack 8 is fixedly provided with a tension spring 10. The other end of the tension spring 10 is fixedly connected with one side of the barrel 1. The tension spring 10 is in a stretched state and provides a restoring force to the movable rack 8, so that the pin column 9 can be automatically inserted into the limiting hole 3 after being released. The inner side of each movable rack 8 is fixedly provided with a resisting column 12 (as shown in FIG. 8) beside the tension spring 10. When the pin column 9 is inserted into the limiting hole 3, the resisting column 12 abuts against the boost handle 4, so that the negative pressure in the barrel 1 cannot pull the needle bolt 2 to move continuously after the pin column 9 is inserted into the limiting hole 3, thereby limiting the position of the needle bolt 2 and increasing the accurate control of the position of the needle bolt 2. Figure 4

[0031] The application can be applied to the technical field of the needle barrel capable of generating constant negative pressure and other fields applicable to the application.

[0032] Embodiment Two

[0033] On the basis of Embodiment One, Embodiment Two further includes that the needle barrel capable of generating constant negative pressure is applied to the technical field of the needle barrel capable of generating constant negative pressure. In order to facilitate operation and prevent hand slipping, the far side of each movable rack 8 is fixedly provided with an anti-skid pad 11. The anti-skid pad 11 can be made of rubber or other materials with good anti-skid performance.

[0034] One side of the barrel 1 is fixedly provided with a threaded connecting port 6. The connecting port is used for connecting a drainage tube, so that liquid can be smoothly guided out after the negative pressure is generated.

[0035] The outer side of the barrel 1 is provided with a scale 5. The scale 5 is distributed along the axial direction of the barrel 1 and used for observing the degree of negative pressure generation when the needle bolt 2 is pulled, so as to ensure that the required negative pressure value is reached.

[0036] In order to facilitate operation, the opening of the barrel 1 is fixedly provided with a boost handle 4 on both sides. The boost handle 4 can be used for assisting in stabilizing the barrel 1 or as a hand support point. Meanwhile, one side of the needle bolt 2 is fixedly provided with a pressing handle 201. The design of the pressing handle 201 enables the user to hold and operate the needle bolt 2 more easily.

[0037] ​The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A syringe capable of generating constant negative pressure, characterized in that, Include: The inside of the barrel (1) is slidingly sealed with a piston, and one end of the piston is fixedly provided with a needle plug (2), and a plurality of limiting holes (3) are uniformly distributed on both sides of the needle plug (2); The limiting assembly is arranged on the barrel (1) and is used to limit the position of the needle plug (2) and the piston thereon.

2. The constant negative pressure generating syringe according to claim 1, wherein The limiting assembly includes two connecting seats (7) fixedly arranged on both sides of the opening of the barrel (1), the outer sides of the two connecting seats (7) are rotatably provided with movable racks (8), the bottom sides of the two movable racks (8) are fixedly provided with a plurality of pin columns (9) near the needle plug (2), the pin columns (9) are matched with the limiting holes (3) and can be disengaged from the pin columns (9), the inner sides of the two movable racks (8) are fixedly provided with tension springs (10), the other ends of the tension springs (10) are fixedly connected with one side of the barrel (1), and the inner sides of the two movable racks (8) are fixedly provided with abutting columns (12).

3. A constant negative pressure generating syringe according to claim 2, wherein The sides away from each other of the two movable racks (8) are fixedly provided with anti-skid pads (11).

4. The constant negative pressure generating syringe of claim 1, wherein, One side of the barrel (1) is fixedly provided with a threaded connecting port (6) for facilitating the connection of a drainage tube.

5. The constant negative pressure generating syringe of claim 1, wherein, The outside of the barrel (1) is provided with a scale (5).

6. The constant negative pressure generating syringe of claim 1, wherein, Both sides of the opening of the barrel (1) are fixedly provided with push handles (4), and one side of the needle plug (2) is fixedly provided with a pressing handle (201).

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