Needle cylinder type negative pressure suction device convenient to lock
By designing a movable clamping part and an elastic part, combined with a snap-fit structure, the problems of complex operation and poor adaptability of locking mechanisms in traditional negative pressure suction devices are solved, thus achieving a stable and efficient negative pressure suction function.
Patent Information
- Application Number
- CN202520264475.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Traditional negative pressure aspiration devices require doctors to exert continuous force during the aspiration process, increasing the operational burden, and the locking mechanism has poor adaptability, making it difficult to meet diverse needs.
The first and second clamping parts are movably connected, combined with an elastic part and a snap-fit design, to achieve flexible clamping and stable fixation of the piston, adapting to pistons of different sizes, and providing uniform pressure through a silicone layer, reducing the complexity of manual operation.
It improves suction efficiency, reduces operational complexity, enhances clamping stability and adaptability, and ensures the safety of the device during use.
Smart Images
Figure CN223682845U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical equipment technical field, concretely relates to a needle cylinder formula negative pressure suction device convenient to lock. BACKGROUND
[0002] The needle cylinder formula negative pressure suction device is a kind of medical equipment, utilizes negative pressure principle to extract liquid or gas.In use, medical staff will insert the needle head of needle cylinder into the part needing suction, then generates negative pressure by suction mechanism, to target substance is inhaled into needle cylinder.This kind of device is widely used in the medical field in the extraction of patient's body fluid sample, pus discharge, drainage etc.
[0003] Traditional negative pressure suction device needs doctor to continuously pull push rod to keep certain negative pressure in the suction process, not only increase the operation burden of doctor, also possibly influence suction efficiency.Different application scenarios need different specifications of needle cylinder and pull rod, but locking mechanism in prior art often lacks enough adaptability, it is difficult to meet the diversified needs. UTILITY MODEL CONTENTS
[0004] In view of the above insufficient of prior art, the utility model provides a needle cylinder formula negative pressure suction device convenient to lock to solve the problem of insufficient negative pressure maintaining capacity of prior art negative pressure suction device and poor adaptability of locking mechanism.
[0005] In order to achieve the above utility model purposes, the utility model adopts the technical scheme that a needle cylinder formula negative pressure suction device convenient to lock, including negative pressure suction cylinder and the clamping portion being arranged on negative pressure suction cylinder;Clamping portion includes the first clamping portion and the second clamping portion of swing connection;
[0006] The first clamping portion includes first arc-shaped plate, and one end of first arc-shaped plate is provided with swing shaft, and the end of first arc-shaped plate away from swing shaft is provided with first connecting arm;Second clamping portion includes second arc-shaped plate, and one end of second arc-shaped plate is provided with swing shaft swing connection, and the end of second arc-shaped plate away from second swing shaft is provided with the second connecting arm that is engaged with first connecting arm;The inner side of first clamping portion and second clamping portion is provided with elastic part.
[0007] The utility model discloses the beneficial effect is: first clamping part and second clamping part pass through the mode of swing joint, make the clamping action more flexible. First arc plate and second arc plate cooperate with each other, form an effective clamping mechanism, can not only adapt to the piston of different size, can also keep stability in the clamping process. Elastic part can provide even pressure when clamping object, avoid the damage caused by local pressure too big. Meanwhile, the existence of elastic part makes clamping part can be automatically reset when releasing object, reduces the complexity of manual operation, improves the convenience of use. When first clamping part and second clamping part are clamped, the occlusion of second connecting arm and first connecting arm ensures the stability of clamping state.
[0008] Further, the above-mentioned needle cylinder type negative pressure suction device convenient to lock, the negative pressure suction cylinder includes an empty cylinder and a piston arranged in the empty cylinder, a taper head is arranged at the bottom of the empty cylinder, and a curled edge is arranged at one end of the empty cylinder away from the taper head. The clamping part is arranged above the curled edge.
[0009] The beneficial effect of the above-mentioned further scheme is that the design of the empty cylinder enables the internal space to effectively accommodate the liquid or gas to be extracted, and the presence of the piston generates negative pressure through mechanical movement, thereby realizing the suction function. The shape of the taper head helps to guide the liquid or gas to flow into the empty cylinder, reducing the resistance of the fluid during the entry process. The presence of the curled edge enables the clamping part to be better fixed on the empty cylinder, avoiding sliding or falling during use.
[0010] Further, the above-mentioned needle cylinder type negative pressure suction device convenient to lock, the elastic part is specifically a silica gel layer.
[0011] The beneficial effect of the above-mentioned further scheme is that the elastic properties of the silica gel layer enable it to well adapt to contact surfaces of different shapes.
[0012] Further, the above-mentioned needle cylinder type negative pressure suction device convenient to lock, the edges of the first arc plate and the second arc plate are provided with buckles for fixing with the curled edge.
[0013] The beneficial effect of the above-mentioned further scheme is that the design of the buckle enables the two arc plates to be tightly combined, avoiding loosening or displacement due to changes in negative pressure or external forces during use.
[0014] The beneficial effect of the utility model is that the device realizes the clamping and fixing functions of the piston through the flexible clamping part, improves the stability and universality of clamping through the setting of the elastic part, and ensures the safety and stability of the device through the buckle design. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a structural schematic view of the negative pressure suction device.
[0016] Figure 2 Structure diagram of the clamping part;
[0017] Wherein: 1, negative pressure suction cylinder; 2, first arc plate; 3, movable shaft; 4, first connecting arm; 5, second arc plate; 6, second connecting arm; 7, elastic part; 8, empty cylinder; 9, piston; 10, cone head; 11, edge curl; 12, buckle. DETAILED DESCRIPTION
[0018] The specific embodiments of the utility model are described below, so that the person skilled in the art can understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific embodiments, for the person skilled in the ordinary skill in the art, as long as various changes are within the spirit and scope of the utility model defined and determined by the appended claims, these changes are obvious, all the utility model creations using the utility model concept are within the scope of protection.
[0019] As Figure 1 The embodiment provides a needle cylinder type negative pressure suction device convenient to lock, which comprises a negative pressure suction cylinder 1 and a clamping part arranged on the negative pressure suction cylinder 1, the negative pressure suction cylinder 1 is responsible for generating negative pressure, and realizes the suction function; the clamping part is used for fixing and locking the negative pressure suction cylinder 1, and ensures that displacement or loosening does not occur in the use process.
[0020] The clamping part comprises a first clamping part and a second clamping part in movable connection; the first clamping part comprises a first arc plate 2, one end of the first arc plate 2 is provided with a movable shaft 3, and the end, away from the movable shaft 3, of the first arc plate 2 is provided with a first connecting arm 4; the second clamping part comprises a second arc plate 5, one end of the second arc plate 5 is provided with a movable shaft 3 in movable connection, and the design of the movable shaft 3 enables the first clamping part to rotate at a certain angle relative to the second clamping part. The inner sides of the first clamping part and the second clamping part are provided with elastic parts 7, and in the embodiment, the elastic parts 7 specifically adopt a silica gel layer. The end, away from the second movable shaft 3, of the second arc plate 5 is provided with a second connecting arm 6 engaged with the first connecting arm 4, when the first clamping part and the second clamping part are closed, the first connecting arm 4 and the second connecting arm 6 are engaged with each other, and a stable locking state is formed. Meanwhile, the silica gel layer is closely attached to the outer wall of the negative pressure suction cylinder 1, and stable clamping force is provided. When it is needed to release the fixing, the first clamping part and the second clamping part only need to be pulled away from each other, so that the first clamping part and the second clamping part are separated.
[0021] The negative pressure suction cylinder 1 comprises an empty cylinder 8 and a piston 9, the piston 9 is arranged in the empty cylinder 8, tightly matches with the inner wall of the empty cylinder 8, and can slide back and forth in the empty cylinder 8. By pushing the piston 9, the volume in the empty cylinder 8 can be changed, so that the function of negative pressure suction is realized. The bottom of the empty cylinder 8 is provided with a cone head 10, the end of the empty cylinder 8 away from the cone head 10 is provided with a curled edge 11, a clamping part is arranged above the curled edge 11, the edges of the first arc-shaped plate 2 and the second arc-shaped plate 5 are provided with buckles 12 for fixing the curled edge 11, and the buckles 12 can be fixedly connected with the curled edge 11.
Claims
1. A needle and syringe negative pressure suction device that facilitates locking, comprising: The utility model relates to a negative pressure suction cylinder (1) and the clamping part of setting on negative pressure suction cylinder (1), the clamping part includes the first clamping part and the second clamping part of swing connection, The first clamping part includes first arc plate (2), one end of first arc plate (2) sets up swing axle (3), and the first arc plate (2) is away from the one end of swing axle (3) and is provided with first connecting arm (4), the second clamping part includes second arc plate (5), one end of second arc plate (5) sets up swing axle (3) swing connection, and the second arc plate (5) is away from the one end of second swing axle (3) and is provided with the second connecting arm (6) of the occlusion of first connecting arm (4), and the inner side of first clamping part and second clamping part is provided with elastic part (7).
2. The needleless hydraulic pressure vacuum pumping device of claim 1, wherein, The negative pressure suction cylinder (1) includes empty cylinder (8) and the piston (9) of setting in empty cylinder (8), the bottom of empty cylinder (8) is provided with taper head (10), and the one end of empty cylinder (8) is away from taper head (10) and is provided with curling edge (11), and the clamping part is set above curling edge (11).
3. The needleless hydraulic pressure vacuum pumping device of claim 1, wherein, The elastic part (7) is specifically silica gel layer.
4. The needleless hydraulic pressure vacuum pumping device of claim 2, wherein, The edge of first arc plate (2) and second arc plate (5) is provided with buckle (12) for fixing with curling edge (11).