Small-metering negative pressure assist device

Abstract

The utility model belongs to the field of medical assistors, and particularly relates to a small-metering negative pressure assistor. The supporting part is movably connected with a syringe needle cylinder in a clamped mode, the lifting part is connected with the supporting part in a sliding mode, the locking device is arranged on the supporting part, the locking device is used for locking and fixing the supporting part and the lifting part, and the lifting part is movably connected with a syringe piston handle in a clamped mode. When negative pressure drainage is carried out, an injector is clamped into the supporting part in the device, a piston handle is clamped into the lifting part and then connected with a drainage tube, a piston of the injector is driven by the lifting part to form certain negative pressure, and finally the locking device is locked. The operation is simple and convenient, and can be completed by one person independently. And the needle cylinder handle and the piston handle are clamped with the device before negative pressure is extracted, so that a nurse does not need to contact the piston part of the injector, and the risk that the nurse is injured by clamping is avoided. And the device is not in direct contact with pollutants, so that the device can be repeatedly used, and the cost is saved to a great extent.

Description

Technical Field

[0001] The utility model belongs to the field of medical aids, and particularly relates to a small-dose negative pressure assistor. Background Art

[0002] As a widely used technology for treating wound surfaces, vacuum sealing drainage (VSD) plays an unprecedented role in repairing skin and soft tissue defects (especially infected wounds on limbs). In 1993, German doctor Fleischmann first discovered this treatment method. In 1994, Professor Qiu Huade introduced it into China for the first time as a new method for wound treatment. VSD can keep the wound in a negative pressure state and a series of related mechanisms to achieve the purpose of wound healing. In recent years, many doctors have applied it clinically to treat chronic non-healing wounds and achieved satisfactory curative effects. There are many existing drainage devices with larger capacities on the market, while there are few drainage devices with smaller capacities and the price of disposable ones is not cheap.

[0003] Clinically, for the convenience of saving costs, disposable syringes are often used to connect the drainage tube for drainage. When using a disposable syringe for drainage, the syringe barrel needs to be kept in a negative pressure state, and it is necessary to fix between the syringe barrel handle and the piston handle. Clinically, in order to maintain the negative pressure state in the syringe barrel, after the syringe piston is withdrawn, a small syringe barrel is often used to be clamped between the original syringe barrel handle and the piston handle for fixation. However, since this operation requires at least two nursing staff to operate and is very easy to pinch hands, it affects the work efficiency of nursing staff and there is a risk of injury. Summary of the Utility Model

[0004] The utility model discloses a small-dose negative pressure assistor, mainly solving the problem that when there are few existing small-dose drainage devices on the market and the price is not low, disposable syringes are often used to connect the drainage tube for drainage, and there is a lack of a fixing device after the disposable syringe piston is withdrawn.

[0005] To achieve the above object, the utility model provides a small-dose negative pressure assistor, including a support part that is movably clamped with the syringe barrel, a lifting part that is slidably connected with the support part, and a locking device arranged on the support part. The locking device is used for locking and fixing between the support part and the lifting part, and the lifting part is movably clamped with the syringe piston handle.

[0006] Preferably, the lifting part includes a pull rod that is slidably connected with the support part and a clamping groove located at the end of the pull rod. The clamping groove is movably clamped with the syringe piston handle.

[0007] Preferably, the lifting part further includes a handle arranged on the clamping groove.

[0008] Preferably, the locking device includes a paddle rotatably arranged on the support part, and a protrusion arranged on the side of the paddle close to the support part. An opening through which the protrusion can pass is arranged at a position corresponding to the protrusion on the support part. The rotation of the paddle drives the protrusion to abut against or separate from the pull rod.

[0009] Preferably, two fixing platforms are arranged at intervals on the support part, and the paddle is rotatably connected to the fixing platforms through a rotating shaft.

[0010] Preferably, a groove adapted to the protrusion is arranged on the side of the pull rod close to the locking device.

[0011] Preferably, a sliding groove for the pull rod to slide is arranged on the support part.

[0012] Preferably, a clamping groove is arranged at the upper end of the support part, and the clamping groove is movably clamped with the syringe barrel handle.

[0013] Preferably, scale lines are arranged on the pull rod.

[0014] The technical solution provided by the present utility model at least has the following technical effects:

[0015] The present utility model discloses a small-dose negative pressure assistor. When performing negative pressure drainage, first, the syringe is clamped into the support part in the device, the piston handle is clamped into the lifting part, after loosening the locking device, the drainage tube is connected, the syringe piston is driven by the lifting part to form a certain negative pressure, and finally the locking device is locked. The operation is simple and convenient, and can be completed independently by one person. And because the syringe barrel handle and the piston handle are clamped with the device before extracting the negative pressure, only need to pull the lifting part and then lock it, so the risk of being pinched by the nursing staff is avoided. Moreover, since the device does not directly contact pollutants, it can be reused multiple times, which also greatly saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic diagram of the overall structure of the small-dose negative pressure assistor in the embodiment of the present utility model;

[0018] Figure 2 It is a schematic diagram of the use state structure of the small-dose negative pressure assistor in the embodiment of the present utility model;

[0019] Figure 3 It is a schematic diagram of the back structure of the small-dose negative pressure assistor in the embodiment of the present utility model;

[0020] Figure 4 This is a schematic structural diagram of the locking device in the embodiment of the present utility model.

[0021] Main reference numerals: 1, supporting part; 2, lifting part; 3, locking device; 11, clamping groove; 12, sliding groove; 21, pull rod; 22, handle; 23, clamping groove; 31, dial; 32, protrusion. Specific embodiments

[0022] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the embodiments of the present utility model, and should not be construed as a limitation of the present utility model.

[0023] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model 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 should not be construed as a limitation of the present utility model.

[0024] Refer to Figure 1The present embodiment discloses a small-metering negative pressure assistant, comprising a support portion 1 movably engaged with a syringe barrel, a lifting portion 2 slidably connected with the support portion 1, and a locking device 3 arranged on the support portion 1, wherein the locking device 3 is used for locking and fixing between the support portion 1 and the lifting portion 2, and the lifting portion 2 is movably engaged with the syringe piston handle. The inner side of the support portion 1 is provided with a groove adapted to the size of the syringe barrel, and anti-slip silicone pads are arranged on both sides of the groove. A slot 11 for engaging the syringe handle is arranged near the lifting portion 2 of the support portion 1, and a silicone pad can also be arranged in the slot 11. A slide groove 12 is arranged at the top of the support portion 1, and the slide groove 12 can be used for the lifting portion 2 to slide, so as to realize the piston pumping at different heights. The slide groove 12 can also pass through the support portion 1, so that the length of the lifting portion 2 is not limited by the length of the support portion 1. The lifting part 2 is divided into a pull rod 21 and a clamping groove 23. The pull rod 21 is slidably connected to the support part 1 through the slide groove 12 of the support part 1. The clamping groove 23 is used to clamp the piston handle. A thin silicone pad can also be arranged in the clamping groove 23. A locking device 3 and an opening for the device to pass through are rotatably arranged on the outer side of the support part 1. The locking device 3 is divided into a paddle 31 and a protrusion 32 near the end of the pull rod 21. The paddle 31 is pushed to make the protrusion 32 clamp with the pull rod 21, and the locking can be achieved; the paddle 31 is pushed up to separate the protrusion 32 from the pull rod 21, and the locking can be released.

[0025] like Figure 2 , Figure 3 As shown, when using the device for negative pressure drainage, first, the syringe needs to be clamped into the support part 1, and the syringe handle needs to be clamped with the clamping groove 11 of the support part 1, and the piston handle needs to be clamped with the clamping groove 23. The operating nursing staff can flip the device so that the syringe faces the palm of the hand, and hold the support part 1 and the syringe tightly with one hand. After the syringe needle is connected to the drainage tube, the nursing staff can use the other hand to pull the pull rod 21 of the lifting part 2 to drive the piston to move to form a suitable negative pressure chamber. Then, it is only necessary to pull the paddle 31 to drive the protrusion 32 to rotate in the direction of the pull rod 21. The protrusion 32 passes through the opening on the support part 1 and abuts against the pull rod 21 to fix the length of the pull rod 21. Considering the problem that the outer side of the lifting part 2 is flat and difficult to pull, two handles 22 are also provided on both sides of the clamping groove 23, so that the nursing staff can operate more conveniently and quickly. And in order to make the length of the piston drawn out more intuitively observed, a distance scale is provided on the pull rod 21 of the lifting part 2. The device is simple to operate, convenient and quick, and can greatly reduce the workload of nursing staff when using disposable syringes for negative pressure drainage.

[0026] In order to make the lifting part 2 and the supporting part 1 more firmly connected, refer to Figure 4, on the basis of the original locking device 3, some improvements have been made. First, fixing platforms are arranged at intervals on the support portion 1, and the dial 31 is rotatably connected to the fixing platform through a rotating shaft, which makes the connection between the dial 31 and the support portion 1 more firm and not easily damaged during use, and the overall device is more durable. Secondly, a groove adapted to the protrusion 32 is provided on one side of the pull rod 21 close to the locking device 3. When the device is in the locked state, the protrusion 32 will be driven to be stuck in the groove, and the protrusion 32 can make the locking device 3 more stable under the limitation of the groove.

[0027] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A small-metered negative pressure assist device, characterized in that: The invention comprises a support part (1) movably engaged with a syringe barrel, a lifting part (2) slidably connected with the support part (1), and a locking device (3) arranged on the support part (1), wherein the locking device (3) is used for locking and fixing the support part (1) and the lifting part (2), and the lifting part (2) is movably engaged with a syringe piston handle.

2. A small-metered negative pressure assist device according to claim 1, characterized in that: The lifting portion (2) comprises a pull rod (21) slidably connected to the support portion (1), and a clamping groove (23) located at the end of the pull rod (21), wherein the clamping groove (23) is movably clamped to the syringe piston handle.

3. A small-metered negative pressure assist device according to claim 2, characterized in that: The lifting portion (2) also includes a handle (22) arranged on the clamping groove (23).

4. A small-metered negative pressure assist device according to claim 1, characterized in that: The locking device (3) comprises a paddle (31) rotatably arranged on the support portion (1), and a protrusion (32) arranged on the side of the paddle (31) close to the support portion (1); an opening for the protrusion (32) to pass through is arranged at a position corresponding to the support portion (1); the paddle (31) rotates to drive the protrusion (32) to abut against or separate from the pull rod (21).

5. A small-metered negative pressure assisting device according to claim 4, characterized in that: Two fixed platforms are arranged at intervals on the support portion (1), and the paddle (31) is rotatably connected to the fixed platforms via a rotating shaft.

6. A small-metered negative pressure assisting device according to claim 4, characterized in that: A groove matching the protrusion (32) is provided on one side of the pull rod (21) close to the locking device (3).

7. A small-metered negative pressure assisting device according to claim 1, characterized in that: The support portion (1) is provided with a sliding groove (12) for the pull rod (21) to slide.

8. A small-metered negative pressure assisting device according to claim 1, characterized in that: The upper end of the support portion (1) is provided with a clamping groove (11), and the clamping groove (11) is movably clamped with the syringe handle.

9. A small-metered negative pressure assist device according to claim 2, characterized in that: The pull rod (21) is provided with scale lines.

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